/* roulang page: index */
:root {
  --c-primary: #1F6E8C;
  --c-primary-600: #17596F;
  --c-primary-700: #10465A;
  --c-primary-100: #DBEEF4;
  --c-accent: #E8853B;
  --c-accent-600: #D16E2A;
  --c-accent-100: #FCE8D9;
  --c-bg: #F7FAFA;
  --c-bg-deep: #EAF2F3;
  --c-surface: #FFFFFF;
  --c-card: #FFFFFF;
  --c-text-900: #122B33;
  --c-text-700: #334E58;
  --c-text-500: #607984;
  --c-text-300: #92A6AE;
  --c-border: #DCE7EA;
  --c-border-light: #EAF1F3;
  --shadow-sm: 0 2px 12px rgba(18, 43, 51, .06);
  --shadow-md: 0 8px 28px rgba(18, 43, 51, .09);
  --shadow-lg: 0 20px 48px rgba(17, 50, 60, .13);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --container: 1280px;
  --fs-hero: clamp(32px, 5vw, 52px);
  --fs-h1: clamp(28px, 4vw, 40px);
  --fs-h2: clamp(24px, 3vw, 32px);
  --fs-h3: 20px;
  --fs-h4: 17px;
  --fs-body: 16px;
  --fs-secondary: 14px;
  --fs-caption: 12px;
  --space-section: clamp(60px, 7vw, 88px);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  background: var(--c-bg);
  color: var(--c-text-900);
  font-size: var(--fs-body);
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--c-primary-600);
  text-decoration: none;
  transition: color .2s ease;
}

a:hover {
  color: var(--c-primary-700);
}

ul,
ol {
  list-style: none;
}

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}

.container {
  width: min(var(--container), 100% - clamp(40px, 8vw, 80px));
  margin-inline: auto;
}

section {
  scroll-margin-top: 90px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  line-height: 1.4;
  font-size: 15px;
  cursor: pointer;
  transition: background-color .22s ease, border-color .22s ease, color .22s ease, box-shadow .22s ease, transform .12s ease;
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px dashed var(--c-accent);
  outline-offset: 4px;
}

.btn-accent {
  background: linear-gradient(175deg, var(--c-accent), var(--c-accent-600));
  color: #fff;
  box-shadow: 0 8px 22px rgba(232, 133, 59, .24);
}

.btn-accent:hover {
  background: var(--c-accent-600);
  color: #fff;
  box-shadow: 0 12px 28px rgba(209, 110, 42, .28);
  transform: translateY(-2px);
}

.btn-accent:active {
  transform: translateY(0);
  box-shadow: 0 6px 14px rgba(232, 133, 59, .22);
}

.btn-primary {
  background: linear-gradient(170deg, var(--c-primary), var(--c-primary-700));
  color: #fff;
}

.btn-primary:hover {
  background: var(--c-primary-700);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  background: transparent;
  border-color: var(--c-border);
  color: var(--c-text-700);
}

.btn-ghost:hover {
  border-color: var(--c-primary);
  color: var(--c-primary-700);
  background: rgba(31, 110, 140, .04);
  transform: translateY(-2px);
}

.badge,
.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.6;
  white-space: nowrap;
}

.badge {
  background: var(--c-primary-100);
  color: var(--c-primary-700);
}

.chip-accent {
  background: var(--c-accent-100);
  color: var(--c-accent-600);
}

/* ---------- topbar ---------- */
.topbar {
  background: var(--c-text-900);
  color: rgba(255, 255, 255, .72);
  font-size: 12.5px;
  line-height: 1;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 38px;
  gap: 16px;
}

.topbar-secure {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: rgba(255, 255, 255, .65);
  letter-spacing: .03em;
}

.topbar-secure strong {
  color: #fff;
  font-weight: 600;
}

.topbar-links {
  display: inline-flex;
  align-items: center;
  gap: 16px;
}

.topbar-links span {
  color: rgba(255, 255, 255, .52);
}

.topbar-links a {
  color: rgba(255, 255, 255, .82);
  text-decoration: none;
  transition: color .2s ease;
}

.topbar-links a:hover {
  color: #fff;
}

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 99;
  background: rgba(255, 255, 255, .98);
  border-bottom: 1px solid var(--c-border-light);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  min-height: 74px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(150deg, var(--c-primary-100), #fff);
  display: grid;
  place-items: center;
  color: var(--c-primary);
  box-shadow: inset 0 0 0 1px rgba(31, 110, 140, .14);
}

.brand-text {
  display: flex;
  align-items: baseline;
  gap: 5px;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: .02em;
  color: var(--c-text-900);
  white-space: nowrap;
}

.brand-text .brand-sub {
  font-weight: 600;
  font-size: 14px;
  color: var(--c-accent-600);
  background: var(--c-accent-100);
  padding: 2px 8px;
  border-radius: 6px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav ul a {
  display: block;
  padding: 8px 15px;
  font-size: 15px;
  color: var(--c-text-700);
  font-weight: 500;
  border-radius: 999px;
  transition: background .2s ease, color .2s ease;
}

.site-nav ul a:hover {
  color: var(--c-primary-700);
  background: var(--c-bg);
}

.site-nav ul a.active {
  color: var(--c-primary-700);
  background: var(--c-primary-100);
  font-weight: 600;
  position: relative;
}

.site-nav ul a.active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 3px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--c-accent);
  transform: translateX(-50%);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--c-border);
  border-radius: 12px;
  background: #fff;
  cursor: pointer;
  position: relative;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 4px;
  background: var(--c-text-900);
  position: absolute;
  left: 50%;
  margin-left: -9px;
  transition: transform .25s ease;
}

.nav-toggle span {
  top: 50%;
  margin-top: -1px;
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
}

.nav-toggle span::before {
  top: -6px;
}

.nav-toggle span::after {
  top: 6px;
}

.header-open .nav-toggle span {
  background: transparent;
}

.header-open .nav-toggle span::before {
  transform: translateY(6px) rotate(45deg);
}

.header-open .nav-toggle span::after {
  transform: translateY(-6px) rotate(-45deg);
}

/* ---------- hero ---------- */
.hero {
  background: linear-gradient(100deg, rgba(255, 255, 255, .96) 0%, rgba(219, 238, 244, .92) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  border-bottom: 1px solid var(--c-border-light);
}

.hero-grid {
  min-height: clamp(480px, 68vh, 660px);
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  align-items: center;
  gap: clamp(36px, 6vw, 80px);
  padding-block: clamp(48px, 6vw, 84px);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .78);
  border: 1px solid rgba(31, 110, 140, .16);
  color: var(--c-primary-700);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 22px;
  box-shadow: var(--shadow-sm);
}

.hero h1 {
  font-size: var(--fs-hero);
  line-height: 1.22;
  letter-spacing: .02em;
  color: var(--c-text-900);
  font-weight: 800;
  margin-bottom: 20px;
}

.hero-desc {
  font-size: 17px;
  line-height: 1.9;
  color: var(--c-text-500);
  max-width: 560px;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  padding-top: 16px;
  border-top: 1px solid rgba(31, 110, 140, .1);
  color: var(--c-text-500);
  font-size: 14px;
}

.hero-trust li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-trust li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #2A9D71;
}

.hero-visual {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  background: rgba(255, 255, 255, .55);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, .7);
  aspect-ratio: 4/3;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(18, 43, 51, .22));
}

.hero-float {
  position: absolute;
  left: 16px;
  bottom: 16px;
  z-index: 2;
  background: rgba(255, 255, 255, .94);
  border-radius: 14px;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(8px);
  padding: 10px 14px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.hero-float strong {
  display: block;
  color: var(--c-text-900);
  font-size: 13px;
  line-height: 1.3;
}

.hero-float span {
  display: block;
  font-size: 11px;
  color: var(--c-text-300);
  line-height: 1.3;
}

.float-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #2A9D71;
  box-shadow: 0 0 0 5px rgba(42, 157, 113, .13);
}

/* ---------- trust strip ---------- */
.trust-strip {
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border-light);
}

.trust-strip .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding-top: 26px;
  padding-bottom: 26px;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 4px;
  color: var(--c-text-700);
}

.trust-icon {
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  border-radius: 13px;
  background: var(--c-primary-100);
  display: grid;
  place-items: center;
  color: var(--c-primary);
  font-weight: 800;
  font-size: 18px;
}

.trust-item strong {
  display: block;
  font-size: 15px;
  color: var(--c-text-900);
  line-height: 1.4;
  font-weight: 600;
}

.trust-item span {
  font-size: 12.5px;
  color: var(--c-text-300);
  line-height: 1.4;
}

/* ---------- section shared ---------- */
.section-pad {
  padding-block: var(--space-section);
}

.section-bg {
  background: var(--c-surface);
}

.section-bg-alt {
  background: var(--c-bg-deep);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 40px;
}

.sec-tag {
  color: var(--c-accent-600);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: .04em;
  display: block;
  margin-bottom: 8px;
}

.section-head h2 {
  font-size: var(--fs-h2);
  letter-spacing: .02em;
  line-height: 1.25;
  max-width: 700px;
}

.section-head p {
  color: var(--c-text-500);
  max-width: 620px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--c-primary-600);
  font-weight: 500;
  flex-shrink: 0;
}

.text-link:hover {
  text-decoration: underline;
}

/* left accent vertical line for module title */
.title-accent {
  display: flex;
  align-items: center;
  gap: 12px;
}

.title-accent::before {
  content: "";
  display: block;
  width: 4px;
  height: 24px;
  border-radius: 4px;
  background: linear-gradient(to bottom, var(--c-primary), var(--c-accent));
}

/* ---------- split feature ---------- */
.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 88px);
  align-items: center;
}

.split-media {
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  aspect-ratio: 4/3;
}

.split-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.split-copy h2 {
  font-size: var(--fs-h2);
  letter-spacing: .02em;
  margin: 12px 0 18px;
}

.split-copy .lead {
  color: var(--c-text-500);
  font-size: 16px;
  line-height: 1.95;
  margin-bottom: 22px;
}

.check-list {
  display: grid;
  gap: 13px;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--c-text-700);
  font-size: 15px;
  line-height: 1.6;
}

.check-list li .check-ic {
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--c-primary-100);
  color: var(--c-primary-700);
  font-size: 12px;
  display: grid;
  place-items: center;
  margin-top: 3px;
}

/* ---------- data metrics ---------- */
.metrics-block {
  background: var(--c-text-900);
  border-radius: 24px;
  padding: clamp(30px, 5vw, 56px) clamp(20px, 4vw, 64px);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.metrics-block::after {
  content: "";
  position: absolute;
  right: -110px;
  top: -110px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(31, 110, 140, .35);
  filter: blur(10px);
}

.metric {
  position: relative;
  z-index: 2;
  text-align: center;
}

.metric-num {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 800;
  line-height: 1.2;
  color: #fff;
  letter-spacing: .02em;
}

.metric-num small {
  font-size: .62em;
  font-weight: 600;
  color: var(--c-primary-100);
  margin-left: 3px;
}

.metric-label {
  color: rgba(255, 255, 255, .62);
  font-size: 14px;
  margin-top: 8px;
}

/* ---------- news / cms ---------- */
.news-section {
  background: var(--c-bg);
}

.news-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 24px;
  align-items: stretch;
}

.news-feature {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 360px;
  background: var(--c-primary-700);
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease;
}

.news-feature:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.news-feature-media {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform .4s ease;
}

.news-feature:hover .news-feature-media {
  transform: scale(1.04);
}

.news-feature-content {
  position: relative;
  z-index: 2;
  padding: 28px;
  background: linear-gradient(180deg, transparent, rgba(18, 43, 51, .93) 70%);
  color: #fff;
}

.news-feature-content .badge {
  margin-bottom: 10px;
}

.news-feature-content h3 {
  font-size: 21px;
  line-height: 1.5;
  margin-bottom: 8px;
  color: #fff;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-feature-content p {
  color: rgba(255, 255, 255, .78);
  font-size: 14px;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-feature-meta {
  display: inline-flex;
  gap: 8px;
  color: rgba(255, 255, 255, .62);
  font-size: 12px;
  margin-top: 8px;
}

.news-side {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.news-row {
  display: block;
  background: var(--c-surface);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid transparent;
  transition: background .22s ease, transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}

.news-row:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--c-primary-100);
}

.news-row-top {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--c-text-300);
  font-size: 12px;
  margin-bottom: 6px;
}

.news-row h3 {
  font-size: 16px;
  line-height: 1.55;
  color: var(--c-text-900);
  font-weight: 500;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color .2s ease;
}

.news-row:hover h3 {
  color: var(--c-primary-700);
}

.news-empty {
  grid-column: 1 / -1;
  border: 1px dashed var(--c-border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, .6);
  min-height: 160px;
  display: grid;
  place-items: center;
  color: var(--c-text-300);
  font-size: 15px;
}

/* ---------- scenario ---------- */
.scenario {
  background: var(--c-bg-deep);
}

.scenario-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.scenario-card {
  background: var(--c-surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--c-border-light);
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease;
}

.scenario-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.scenario-media {
  overflow: hidden;
  aspect-ratio: 5/3;
}

.scenario-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}

.scenario-card:hover .scenario-media img {
  transform: scale(1.05);
}

.scenario-content {
  padding: 22px 24px 26px;
}

.scenario-content .chip {
  margin-bottom: 10px;
}

.scenario-content h3 {
  font-size: 19px;
  margin-bottom: 8px;
  color: var(--c-text-900);
}

.scenario-content p {
  color: var(--c-text-500);
  font-size: 14px;
  line-height: 1.8;
}

/* ---------- feature matrix ---------- */
.features-panel {
  background: var(--c-surface);
}

.feature-tiles {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.tile {
  background: var(--c-bg);
  border-radius: var(--radius-md);
  padding: 28px 22px;
  border: 1px solid transparent;
  transition: transform .22s ease, box-shadow .22s ease, background .22s ease;
}

.tile:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  background: #fff;
  border-color: var(--c-border);
}

.tile-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: var(--c-primary-100);
  color: var(--c-primary);
  font-size: 20px;
  margin-bottom: 16px;
  font-weight: 700;
}

.tile h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.tile p {
  color: var(--c-text-500);
  font-size: 13px;
  line-height: 1.75;
}

/* ---------- faq ---------- */
.faq-section {
  background: var(--c-bg);
}

.faq-layout {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 48px;
  align-items: start;
}

.faq-left {
  position: sticky;
  top: 110px;
}

.faq-left h2 {
  font-size: var(--fs-h2);
  margin-bottom: 16px;
}

.faq-left p {
  color: var(--c-text-500);
  line-height: 1.9;
}

.faq-list details {
  background: var(--c-surface);
  border: 1px solid var(--c-border-light);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  margin-bottom: 12px;
  transition: background .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.faq-list details[open] {
  background: var(--c-surface);
  border-color: var(--c-primary);
  box-shadow: var(--shadow-sm);
}

.faq-list summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  font-weight: 600;
  color: var(--c-text-900);
  line-height: 1.6;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary h3 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
}

.faq-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--c-primary-100);
  position: relative;
  flex: 0 0 auto;
  transition: transform .25s ease, background .25s ease;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  background: var(--c-primary-700);
  border-radius: 3px;
  transition: background .25s ease;
}

.faq-icon::before {
  width: 10px;
  height: 2px;
  left: 6px;
  top: 10px;
}

.faq-icon::after {
  width: 2px;
  height: 10px;
  left: 10px;
  top: 6px;
}

details[open] .faq-icon {
  transform: rotate(45deg);
  background: var(--c-accent-100);
}

details[open] .faq-icon::before,
details[open] .faq-icon::after {
  background: var(--c-accent-600);
}

.faq-list details p {
  color: var(--c-text-700);
  line-height: 1.85;
  font-size: 14px;
  margin-top: 12px;
}

/* ---------- cta band ---------- */
.cta-band {
  background: var(--c-text-900);
  border-radius: 24px;
  padding: clamp(32px, 5vw, 56px) clamp(24px, 5vw, 64px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  overflow: hidden;
  position: relative;
}

.cta-band::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 40px solid rgba(255, 255, 255, .02);
  border-top-color: rgba(232, 133, 59, .2);
  transform: rotate(25deg);
}

.cta-copy {
  position: relative;
  z-index: 2;
  color: #fff;
}

.cta-copy h2 {
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.35;
  margin-bottom: 10px;
}

.cta-copy p {
  color: rgba(255, 255, 255, .72);
  font-size: 15px;
  max-width: 620px;
}

.cta-actions {
  position: relative;
  z-index: 2;
  flex-shrink: 0;
}

.cta-actions .btn-accent {
  box-shadow: 0 10px 30px rgba(232, 133, 59, .32);
}

/* ---------- footer ---------- */
.site-footer {
  background: var(--c-text-900);
  color: rgba(255, 255, 255, .7);
  margin-top: clamp(32px, 5vw, 60px);
}

.footer-main {
  display: grid;
  grid-template-columns: 1.5fr .9fr .9fr 1fr;
  gap: 44px;
  padding-block: 54px 40px;
}

.footer-brand .brand {
  margin-bottom: 12px;
}

.footer-brand .brand-text {
  color: #fff;
}

.footer-brand-desc {
  font-size: 13px;
  line-height: 1.85;
  color: rgba(255, 255, 255, .58);
  max-width: 300px;
}

.footer-title {
  font-size: 15px;
  color: #fff;
  font-weight: 600;
  margin-bottom: 18px;
}

.footer-links li + li {
  margin-top: 8px;
}

.footer-links a {
  font-size: 13px;
  color: rgba(255, 255, 255, .64);
  transition: color .2s ease, padding-left .2s ease;
}

.footer-links a:hover {
  color: #fff;
  padding-left: 5px;
}

.footer-contact p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .64);
  display: flex;
  align-items: flex-start;
  gap: 6px;
  margin-bottom: 6px;
}

.footer-service-time {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, .1);
  color: rgba(255, 255, 255, .42);
  font-size: 12px;
}

.footer-qr {
  width: 84px;
  height: 84px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: #fff;
  color: var(--c-primary);
  font-weight: 700;
  margin-top: 12px;
  font-size: 12px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .09);
  padding-block: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 12px;
  color: rgba(255, 255, 255, .4);
  flex-wrap: wrap;
}

.footer-bottom a {
  color: rgba(255, 255, 255, .52);
}

.footer-bottom a:hover {
  color: #fff;
}

/* ---------- responsive ---------- */
@media (max-width: 1120px) {
  .site-nav ul a {
    padding: 8px 10px;
    font-size: 14px;
  }

  .site-nav .btn {
    padding: 10px 18px;
    font-size: 14px;
  }

  .trust-strip .container {
    grid-template-columns: repeat(2, 1fr);
    row-gap: 4px;
  }
}

@media (max-width: 992px) {
  .header-inner {
    flex-wrap: wrap;
    min-height: auto;
    padding-block: 10px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
    align-items: stretch;
    background: #fff;
    padding-top: 8px;
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease, padding .3s ease;
  }

  .header-open .site-nav {
    max-height: 520px;
    padding-top: 16px;
  }

  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    width: 100%;
    max-height: 400px;
    overflow: auto;
  }

  .site-nav ul a {
    font-size: 15px;
    padding: 11px 14px;
  }

  .site-nav .btn {
    width: 100%;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .hero-visual {
    max-height: 340px;
    aspect-ratio: 16/11;
    width: 100%;
  }

  .split-grid {
    grid-template-columns: 1fr;
  }

  .split-row-2 .split-media {
    order: -1;
  }

  .feature-tiles {
    grid-template-columns: repeat(2, 1fr);
  }

  .news-grid {
    grid-template-columns: 1fr;
  }

  .news-feature {
    min-height: 300px;
  }

  .scenario-cards {
    grid-template-columns: 1fr;
    max-width: 600px;
  }

  .faq-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .faq-left {
    position: static;
  }

  .cta-band {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-main {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .topbar-links span {
    display: none;
  }

  .metrics-block {
    grid-template-columns: repeat(2, 1fr);
    gap: 22px 14px;
  }

  .feature-tiles {
    grid-template-columns: 1fr;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .hero-actions .btn {
    width: 100%;
  }
}

@media (max-width: 520px) {
  .container {
    width: calc(100% - 32px);
  }

  .topbar-inner {
    flex-direction: column;
    justify-content: center;
    padding-block: 8px;
    gap: 6px;
    text-align: center;
  }

  .brand-text {
    font-size: 18px;
  }

  .trust-strip .container {
    grid-template-columns: 1fr;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero h1 {
    font-size: 30px;
  }

  .hero-desc {
    font-size: 15px;
  }

  .hero-float {
    display: none;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    line-height: 1.6;
  }
}

/* roulang page: category1 */
:root {
            --c-primary: #1F6E8C;
            --c-primary-600: #17596F;
            --c-primary-700: #10465A;
            --c-primary-100: #DBEEF4;
            --c-accent: #E8853B;
            --c-accent-600: #D16E2A;
            --c-accent-100: #FCE8D9;
            --c-bg: #F7FAFA;
            --c-bg-deep: #EAF2F3;
            --c-surface: #FFFFFF;
            --c-card: #FFFFFF;
            --c-text-900: #122B33;
            --c-text-700: #334E58;
            --c-text-500: #607984;
            --c-text-300: #92A6AE;
            --c-border: #DCE7EA;
            --c-border-light: #EAF1F3;
            --shadow-sm: 0 2px 12px rgba(18, 43, 51, .06);
            --shadow-md: 0 8px 28px rgba(18, 43, 51, .09);
            --shadow-lg: 0 20px 48px rgba(17, 50, 60, .13);
            --radius-lg: 18px;
            --radius-md: 14px;
            --radius-sm: 9px;
            --fs-hero: clamp(34px, 5.2vw, 52px);
            --fs-h1: clamp(28px, 4vw, 40px);
            --fs-h2: clamp(24px, 3vw, 32px);
            --fs-h3: 20px;
            --fs-body: 16px;
            --container: 1280px;
            --header-h: 64px;
            --topbar-h: 36px;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            background: var(--c-bg);
            color: var(--c-text-900);
            font-size: var(--fs-body);
            line-height: 1.85;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--c-primary-600);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover {
            color: var(--c-primary-700);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding-inline: clamp(20px, 4vw, 40px);
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--c-surface);
            box-shadow: var(--shadow-sm);
        }
        .topbar {
            background: var(--c-text-900);
            color: rgba(255, 255, 255, .82);
            font-size: 12.5px;
            line-height: 36px;
            height: 36px;
        }
        .topbar-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .topbar .domain-text {
            letter-spacing: .05em;
            color: rgba(255, 255, 255, .7);
        }
        .topbar-right {
            display: flex;
            gap: 20px;
            align-items: center;
        }
        .topbar-right span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--c-text-900);
            font-size: 19px;
            font-weight: 700;
            letter-spacing: .02em;
            white-space: nowrap;
        }
        .brand:hover {
            color: var(--c-primary);
            text-decoration: none;
        }
        .brand-mark {
            display: flex;
            width: 34px;
            height: 34px;
            background: linear-gradient(170deg, var(--c-primary), var(--c-primary-700));
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            color: #fff;
            flex-shrink: 0;
        }
        .brand-text {
            display: flex;
            align-items: baseline;
            gap: 4px;
        }
        .brand-sub {
            font-size: 13px;
            font-weight: 500;
            color: var(--c-primary);
            background: var(--c-primary-100);
            padding: 2px 8px;
            border-radius: 200px;
            letter-spacing: .08em;
        }
        .site-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .site-nav ul {
            display: flex;
            gap: 26px;
            list-style: none;
        }
        .site-nav ul a {
            display: inline-block;
            font-size: 15px;
            font-weight: 500;
            color: var(--c-text-700);
            padding: 6px 2px;
            border-bottom: 2px solid transparent;
            line-height: 1.4;
            transition: color .2s, border-color .2s;
        }
        .site-nav ul a:hover {
            color: var(--c-primary);
            text-decoration: none;
            border-bottom-color: var(--c-primary-100);
        }
        .site-nav ul a.active {
            color: var(--c-primary-700);
            font-weight: 700;
            border-bottom-color: var(--c-primary);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 10px 24px;
            border-radius: 40px;
            font-size: 15px;
            font-weight: 600;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all .22s ease;
            line-height: 1.5;
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(170deg, var(--c-primary), var(--c-primary-700));
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--c-primary-700);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
            text-decoration: none;
        }
        .btn-accent {
            background: linear-gradient(170deg, var(--c-accent), var(--c-accent-600));
            color: #fff;
            box-shadow: 0 8px 20px rgba(232, 133, 59, .25);
        }
        .btn-accent:hover {
            background: var(--c-accent-600);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 12px 24px rgba(232, 133, 59, .32);
            text-decoration: none;
        }
        .btn-outline {
            border-color: var(--c-border);
            color: var(--c-text-700);
            background: #fff;
        }
        .btn-outline:hover {
            border-color: var(--c-primary);
            color: var(--c-primary);
            background: var(--c-primary-100);
            text-decoration: none;
        }
        .btn:active {}
        .btn:active,
        .btn-accent:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible {
            outline: 3px dashed rgba(31, 110, 140, .45);
            outline-offset: 4px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            position: relative;
            cursor: pointer;
            z-index: 1002;
            background: var(--c-bg-deep);
        }
        .nav-toggle span,
        .nav-toggle span::before,
        .nav-toggle span::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 2px;
            background: var(--c-text-900);
            border-radius: 2px;
            left: 10px;
            transition: all .25s ease;
        }
        .nav-toggle span {
            top: 19px;
        }
        .nav-toggle span::before {
            top: -7px;
        }
        .nav-toggle span::after {
            top: 7px;
        }
        .nav-toggle[aria-expanded="true"] span {
            background: transparent;
        }
        .nav-toggle[aria-expanded="true"] span::before {
            top: 0;
            transform: rotate(45deg);
        }
        .nav-toggle[aria-expanded="true"] span::after {
            top: 0;
            transform: rotate(-45deg);
        }
        .nav-overlay {
            display: none;
        }
        @media (max-width: 1080px) {
            :root {
                --header-h: 58px;
            }
            .site-nav {
                position: fixed;
                top: 0;
                right: 0;
                width: min(78vw, 340px);
                height: 100vh;
                background: var(--c-surface);
                box-shadow: var(--shadow-lg);
                flex-direction: column;
                align-items: stretch;
                justify-content: flex-start;
                padding: 90px 28px 36px;
                gap: 8px;
                overflow-y: auto;
                transform: translateX(100%);
                transition: transform .3s ease;
                z-index: 1001;
            }
            .site-nav.is-open {
                transform: translateX(0);
            }
            .site-nav ul {
                flex-direction: column;
                gap: 2px;
                width: 100%;
            }
            .site-nav ul a {
                display: block;
                padding: 12px 6px;
                border-bottom: 1px solid var(--c-border-light);
                font-size: 16px;
                border-radius: 8px;
            }
            .site-nav ul a.active {
                background: var(--c-primary-100);
                color: var(--c-primary-700);
                border-bottom-color: transparent;
                padding-left: 12px;
            }
            .site-nav .btn {
                margin-top: 18px;
                justify-content: center;
            }
            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .nav-overlay.is-visible {
                display: block;
                position: fixed;
                inset: 0;
                background: rgba(18, 43, 51, .45);
                z-index: 1000;
            }
            .header-inner {
                gap: 12px;
            }
        }
        .page-hero {
            position: relative;
            background: linear-gradient(135deg, #F0F8FA 0%, #ffffff 62%, #F4F1EC 100%);
            border-bottom: 1px solid var(--c-border-light);
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            width: 480px;
            height: 480px;
            right: -120px;
            top: -140px;
            background: radial-gradient(circle, rgba(31, 110, 140, .12) 0%, transparent 66%);
            pointer-events: none;
        }
        .page-hero .container {
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: 40px;
            align-items: center;
            min-height: clamp(300px, 40vh, 430px);
            padding-block: clamp(32px, 5vw, 64px);
            position: relative;
        }
        .hero-crumb {
            font-size: 13px;
            color: var(--c-text-500);
            margin-bottom: 16px;
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .hero-crumb span {
            color: var(--c-text-300);
        }
        .hero-crumb a {
            color: var(--c-text-500);
        }
        .hero-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .72);
            border: 1px solid var(--c-border);
            padding: 5px 14px;
            border-radius: 200px;
            font-size: 13px;
            font-weight: 600;
            color: var(--c-primary);
            letter-spacing: .03em;
            margin-bottom: 18px;
            box-shadow: var(--shadow-sm);
        }
        .page-hero h1 {
            font-size: var(--fs-h1);
            line-height: 1.25;
            margin-bottom: 14px;
            color: var(--c-text-900);
            font-weight: 800;
            letter-spacing: .01em;
        }
        .page-hero h1 em {
            font-style: normal;
            color: var(--c-primary);
        }
        .page-hero .lead {
            color: var(--c-text-700);
            font-size: 16px;
            line-height: 1.9;
            margin-bottom: 22px;
            max-width: 540px;
        }
        .hero-img-wrap {
            position: relative;
            aspect-ratio: 800 / 600;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 4px solid #fff;
            background: #fff;
        }
        .hero-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hero-badges {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 14px;
            align-items: center;
        }
        .trust-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13.5px;
            color: var(--c-text-700);
            background: rgba(255, 255, 255, .8);
            border: 1px solid var(--c-border);
            padding: 6px 12px;
            border-radius: 40px;
            font-weight: 500;
        }
        .trust-chip i {
            color: var(--c-primary);
            font-style: normal;
            background: var(--c-primary-100);
            width: 20px;
            height: 20px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            line-height: 1;
        }
        section {
            scroll-margin-top: 90px;
        }
        .section-hero {
            padding: clamp(10px, 3vw, 30px) 0;
        }
        .section-pad {
            padding: clamp(64px, 7vw, 100px) 0;
        }
        .section-deep {
            background: var(--c-bg-deep);
            padding: clamp(64px, 7vw, 88px) 0;
        }
        .section-white {
            background: #fff;
            padding: clamp(64px, 7vw, 88px) 0;
        }
        .section-title-wrap {
            max-width: 720px;
            margin-bottom: clamp(28px, 4vw, 48px);
        }
        .kicker-chip {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            color: var(--c-primary);
            letter-spacing: .1em;
            margin-bottom: 12px;
            text-transform: uppercase;
        }
        .kicker-chip::before {
            content: '';
            width: 6px;
            height: 6px;
            background: var(--c-primary);
            border-radius: 50%;
            display: inline-block;
        }
        .section-title-wrap h2 {
            font-size: var(--fs-h2);
            color: var(--c-text-900);
            line-height: 1.35;
            font-weight: 800;
        }
        .section-title-wrap .subtext {
            color: var(--c-text-700);
            font-size: 16px;
            margin-top: 14px;
            line-height: 1.9;
        }
        .platform-store {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .store-card {
            background: var(--c-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--c-border-light);
            box-shadow: var(--shadow-sm);
            padding: clamp(24px, 3vw, 38px);
            transition: transform .25s ease, box-shadow .25s ease;
            display: flex;
            gap: 22px;
            align-items: flex-start;
        }
        .store-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .store-icon {
            width: 50px;
            height: 50px;
            border-radius: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 24px;
        }
        .icon-android {
            background: #E8F2EC;
            color: #2E9A66;
        }
        .icon-apple {
            background: #EDF0F4;
            color: #444B57;
        }
        .icon-web {
            background: var(--c-primary-100);
            color: var(--c-primary);
        }
        .store-body h3 {
            font-size: var(--fs-h3);
            margin-bottom: 6px;
            color: var(--c-text-900);
            line-height: 1.4;
        }
        .store-body p {
            color: var(--c-text-700);
            font-size: 15px;
            margin-bottom: 14px;
            line-height: 1.8;
        }
        .store-tag {
            display: inline-flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 8px;
        }
        .store-tag span {
            background: var(--c-bg-deep);
            border: 1px solid transparent;
            color: var(--c-text-700);
            padding: 3px 10px;
            border-radius: 200px;
            font-size: 12px;
            font-weight: 500;
        }
        .store-tag span.main-tag {
            background: var(--c-primary-100);
            color: var(--c-primary-700);
            border-color: rgba(31, 110, 140, .16);
        }
        .digi-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .digi-item {
            background: var(--c-surface);
            border: 1px solid var(--c-border-light);
            border-radius: var(--radius-md);
            padding: 24px 22px;
            display: flex;
            gap: 14px;
            transition: all .25s ease;
        }
        .digi-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(31, 110, 140, .3);
        }
        .digi-item .num {
            color: var(--c-primary);
            font-size: 26px;
            font-weight: 800;
            line-height: 1.2;
            min-width: 66px;
        }
        .digi-item p {
            color: var(--c-text-700);
            font-size: 14.5px;
            margin-bottom: 4px;
            line-height: 1.6;
        }
        .digi-item small {
            color: var(--c-text-300);
            font-size: 13px;
            line-height: 1.6;
        }
        .official-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: grid;
            gap: 14px;
        }
        .official-list li {
            display: flex;
            gap: 12px;
            padding: 16px 14px;
            background: var(--c-surface);
            border: 1px solid var(--c-border-light);
            border-radius: var(--radius-md);
            align-items: flex-start;
            transition: all .2s ease;
        }
        .official-list li:hover {
            background: #fff;
            box-shadow: var(--shadow-sm);
            border-color: var(--c-border);
        }
        .official-list .list-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--c-primary);
            margin-top: 9px;
            flex-shrink: 0;
        }
        .official-list strong {
            color: var(--c-text-900);
            font-weight: 700;
            display: block;
            margin-bottom: 2px;
        }
        .official-list span {
            color: var(--c-text-700);
            font-size: 14px;
            line-height: 1.7;
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
            counter-reset: step-counter;
        }
        .step-card {
            background: var(--c-card);
            border: 1px solid var(--c-border-light);
            border-radius: var(--radius-lg);
            padding: 30px 22px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all .25s ease;
            position: relative;
            overflow: hidden;
        }
        .step-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }
        .step-card::before {
            content: counter(step-counter);
            counter-increment: step-counter;
            display: flex;
            margin: 0 auto 16px;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: var(--c-primary-100);
            color: var(--c-primary);
            font-weight: 800;
            font-size: 20px;
            align-items: center;
            justify-content: center;
        }
        .step-card h3 {
            font-size: 16px;
            margin-bottom: 8px;
            font-weight: 700;
        }
        .step-card p {
            color: var(--c-text-500);
            font-size: 14px;
            line-height: 1.75;
            margin: 0;
        }
        .veri-panel {
            background: linear-gradient(170deg, #FCFDFD, #F2F7F8);
            border-radius: var(--radius-lg);
            border: 1px solid var(--c-border-light);
            padding: clamp(26px, 4vw, 48px);
        }
        .veri-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }
        .veri-cell {
            background: var(--c-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--c-border-light);
            padding: 22px 20px;
            transition: box-shadow .2s;
        }
        .veri-cell:hover {
            box-shadow: var(--shadow-md);
        }
        .veri-cell .v-icon {
            background: var(--c-primary-100);
            width: 42px;
            height: 42px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 14px;
            color: var(--c-primary);
        }
        .veri-cell h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .veri-cell p {
            font-size: 14px;
            color: var(--c-text-700);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .veri-cell .meta-link {
            font-size: 13px;
            font-weight: 600;
        }
        .feature-split {
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: clamp(32px, 5vw, 70px);
            align-items: center;
        }
        .feature-split .img-frame {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            aspect-ratio: 8/7;
            box-shadow: var(--shadow-md);
        }
        .feature-split .img-frame img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .feature-list {
            list-style: none;
            display: grid;
            gap: 18px;
        }
        .feature-list li {
            position: relative;
            padding-left: 24px;
        }
        .feature-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 11px;
            width: 8px;
            height: 8px;
            background: var(--c-accent);
            border-radius: 2px;
            transform: rotate(45deg);
        }
        .feature-list h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--c-text-900);
            margin-bottom: 4px;
        }
        .feature-list p {
            font-size: 14.5px;
            color: var(--c-text-700);
            line-height: 1.75;
            margin: 0;
        }
        .data-band {
            background: var(--c-text-900);
            border-radius: var(--radius-lg);
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 34px;
            padding: clamp(32px, 5vw, 64px) clamp(28px, 5vw, 64px);
            margin-top: -40px;
            position: relative;
            z-index: 2;
            box-shadow: var(--shadow-lg);
        }
        .data-cell {
            color: #fff;
        }
        .data-cell .digital {
            font-size: clamp(28px, 4vw, 42px);
            font-weight: 800;
            line-height: 1.2;
            display: block;
            letter-spacing: .02em;
        }
        .data-cell .digital em {
            font-style: normal;
            color: var(--c-accent);
            font-size: .65em;
            vertical-align: 8px;
            margin-left: 2px;
            font-weight: 700;
        }
        .data-cell .label-txt {
            font-size: 14px;
            color: rgba(255, 255, 255, .78);
            margin-top: 6px;
            display: block;
            letter-spacing: .04em;
        }
        .faq-wrap {
            display: grid;
            grid-template-columns: .85fr 1.4fr;
            gap: clamp(32px, 5vw, 60px);
            align-items: flex-start;
        }
        .faq-title-col {
            position: sticky;
            top: 130px;
        }
        .faq-list {
            display: grid;
            gap: 16px;
            list-style: none;
        }
        .faq-item {
            background: var(--c-surface);
            border: 1px solid var(--c-border-light);
            border-radius: var(--radius-md);
            padding: 0;
            overflow: hidden;
            transition: border .2s;
        }
        .faq-item:hover {
            border-color: var(--c-bg-deep);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 20px;
            font-size: 15.5px;
            font-weight: 600;
            color: var(--c-text-900);
            cursor: pointer;
            gap: 12px;
            transition: background .2s;
            user-select: none;
            width: 100%;
            text-align: left;
            background: #fff;
            border: none;
        }
        .faq-question:hover {
            background: var(--c-bg);
        }
        .faq-question .chev-icon {
            font-style: normal;
            color: var(--c-primary);
            transition: transform .3s ease;
            font-size: 19px;
            line-height: 1;
        }
        .faq-item[open] {
            border-color: rgba(31, 110, 140, .35);
        }
        .faq-item[open] .faq-question {
            background: var(--c-primary-100);
        }
        .faq-item[open] .faq-question .chev-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 4px 20px 18px;
            color: var(--c-text-700);
            font-size: 14.5px;
            line-height: 1.8;
        }
        .cta-banner {
            background: linear-gradient(120deg, #10465A 0%, #17596F 60%, #1F6E8C 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            width: 420px;
            height: 420px;
            top: -230px;
            right: -100px;
            border-radius: 50%;
            background: rgba(232, 133, 59, .25);
            filter: blur(4px);
        }
        .cta-banner .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-block: clamp(46px, 6vw, 76px);
            gap: 30px;
            flex-wrap: wrap;
        }
        .cta-banner h2 {
            color: #fff;
            font-size: clamp(24px, 3vw, 34px);
            line-height: 1.35;
            margin-bottom: 12px;
            font-weight: 800;
        }
        .cta-banner p {
            color: rgba(255, 255, 255, .86);
            font-size: 16px;
            line-height: 1.8;
            font-weight: 400;
            max-width: 680px;
        }
        .cta-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .cta-banner .btn-accent {
            padding: 13px 32px;
        }
        .cta-banner .btn-light-outline {
            background: rgba(255, 255, 255, .14);
            border-color: rgba(255, 255, 255, .4);
            color: #fff;
        }
        .cta-banner .btn-light-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, .24);
            color: #fff;
            text-decoration: none;
        }
        .event-note {
            background: var(--c-accent-100);
            border-left: 4px solid var(--c-accent);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            padding: 18px 24px;
            margin-top: 32px;
            display: flex;
            gap: 12px;
            align-items: flex-start;
        }
        .event-note .notic-icon {
            font-size: 22px;
            line-height: 1.6;
        }
        .event-note .txt strong {
            color: var(--c-text-900);
            font-weight: 700;
        }
        .event-note .txt p {
            color: var(--c-text-700);
            font-size: 14.5px;
            margin-top: 4px;
            line-height: 1.8;
        }
        .site-footer {
            background: var(--c-text-900);
            color: rgba(255, 255, 255, .75);
        }
        .footer-main {
            display: grid;
            grid-template-columns: 1.25fr .8fr .8fr 1fr;
            gap: clamp(32px, 4vw, 60px);
            padding-top: clamp(48px, 6vw, 72px);
            padding-bottom: 34px;
        }
        .footer-brand .brand {
            color: #fff;
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 14px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .footer-brand .brand-mark {
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .18);
        }
        .footer-brand-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, .62);
            line-height: 1.9;
            max-width: 320px;
        }
        .footer-title {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(255, 255, 255, .1);
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li a {
            color: rgba(255, 255, 255, .65);
            font-size: 14px;
            padding: 4px 0;
            display: inline-block;
            line-height: 1.6;
        }
        .footer-links li a:hover {
            color: #fff;
            text-decoration: none;
        }
        .footer-contact p {
            font-size: 14px;
            margin-bottom: 10px;
            color: rgba(255, 255, 255, .72);
            line-height: 1.7;
        }
        .footer-service-time {
            background: rgba(255, 255, 255, .08);
            border-radius: 10px;
            padding: 10px 12px;
            font-size: 12.5px;
            color: rgba(255, 255, 255, .55);
            margin-top: 14px;
            line-height: 1.6;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding-block: 20px;
            display: flex;
            justify-content: space-between;
            gap: 10px;
            color: rgba(255, 255, 255, .4);
            font-size: 13px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, .55);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        .button-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 18px;
        }
        .section-quote {
            background: var(--c-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--c-border-light);
            padding: 28px 32px;
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }
        .section-quote::before {
            content: '“';
            position: absolute;
            top: -18px;
            left: 18px;
            font-size: 84px;
            color: var(--c-primary-100);
            line-height: 1;
            font-weight: 800;
        }
        .section-quote p {
            color: var(--c-text-700);
            font-size: 16.5px;
            margin: 0;
            position: relative;
            z-index: 1;
        }
        .quote-author {
            margin-top: 12px;
            text-align: right;
            font-size: 13.5px;
            color: var(--c-text-300);
        }
        @media (max-width: 1080px) {
            .topbar {
                font-size: 12px;
            }
            .topbar-right span:last-child {
                display: none;
            }
            .platform-store {
                grid-template-columns: 1fr;
            }
            .digi-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .veri-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-split {
                grid-template-columns: 1fr;
            }
            .data-band {
                grid-template-columns: repeat(2, 1fr);
                row-gap: 28px;
            }
            .faq-wrap {
                grid-template-columns: 1fr;
            }
            .faq-title-col {
                position: static;
            }
            .page-hero .container {
                grid-template-columns: 1fr;
            }
            .hero-visual {
                max-width: 560px;
            }
            .footer-main {
                grid-template-columns: 1fr 1fr;
            }
            .footer-brand {
                grid-column: span 2;
            }
        }
        @media (max-width: 640px) {
            .topbar .domain-text {
                max-width: 190px;
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
            }
            .digi-grid,
            .steps-grid,
            .veri-grid,
            .data-band {
                grid-template-columns: 1fr;
            }
            .button-group .btn {
                width: 100%;
            }
            .hero-badges {
                gap: 10px;
            }
            .trust-chip {
                padding: 4px 10px;
                font-size: 12.5px;
            }
            .store-card {
                flex-direction: column;
            }
            .section-quote {
                padding: 22px;
            }
            .footer-main {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: span 1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .container {
                padding-inline: 18px;
            }
            .cta-banner .container {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        .ico-svg {
            width: 17px;
            height: 17px;
            display: inline-block;
            vertical-align: -3px;
            margin-right: 4px;
        }

/* roulang page: article */
:root{
  --c-primary:#1F6E8C;
  --c-primary-600:#17596F;
  --c-primary-700:#10465A;
  --c-primary-100:#DBEEF4;
  --c-accent:#E8853B;
  --c-accent-600:#D16E2A;
  --c-accent-100:#FCE8D9;
  --c-bg:#F7FAFA;
  --c-bg-deep:#EAF2F3;
  --c-surface:#FFFFFF;
  --c-card:#FFFFFF;
  --c-text-900:#122B33;
  --c-text-700:#334E58;
  --c-text-500:#607984;
  --c-text-300:#92A6AE;
  --c-border:#DCE7EA;
  --c-border-light:#EAF1F3;
  --shadow-sm:0 2px 12px rgba(18,43,51,.06);
  --shadow-md:0 8px 28px rgba(18,43,51,.09);
  --shadow-lg:0 20px 48px rgba(17,50,60,.13);
  --radius-lg:22px;
  --radius-md:16px;
  --radius-sm:11px;
}
*, *::before, *::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  background:var(--c-bg);
  color:var(--c-text-900);
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
ul,ol{list-style:none;margin:0;padding:0;}
a{color:var(--c-primary-600);text-decoration:none;transition:color .25s ease;}
a:hover{color:var(--c-primary-700);}
img{max-width:100%;display:block;height:auto;}
button{font:inherit;border:0;background:none;cursor:pointer;color:inherit;}
h1,h2,h3,h4,p{margin:0;font-weight:inherit;}
:focus-visible{outline:2px dashed var(--c-primary);outline-offset:3px;border-radius:4px;}
.container{max-width:1280px;margin-inline:auto;padding-inline:clamp(20px,4vw,40px);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:650;line-height:1.2;text-align:center;
  transition:background .25s ease,box-shadow .25s ease,transform .25s ease,color .25s ease;
}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn:active{transform:translateY(0);box-shadow:none;}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-600);color:#fff;}
.btn-accent{background:var(--c-accent);color:#fff;}
.btn-accent:hover{background:var(--c-accent-600);color:#fff;}
.btn-ghost{background:transparent;border-color:#C3D5DB;color:var(--c-text-700);}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary);background:rgba(31,110,140,.06);}
.kicker{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:700;letter-spacing:.12em;
  color:var(--c-primary);background:var(--c-primary-100);
  border-radius:999px;padding:5px 14px;
}
.section-title{
  font-size:clamp(26px,3vw,34px);line-height:1.4;font-weight:800;
  letter-spacing:.02em;position:relative;padding-left:18px;
}
.section-title::before{
  content:"";position:absolute;left:0;top:.24em;width:4px;height:.64em;border-radius:4px;
  background:linear-gradient(180deg,var(--c-primary),var(--c-accent));
}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:34px;}

/* Header */
.site-header{
  position:sticky;top:0;z-index:60;width:100%;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--c-border-light);
  box-shadow:0 2px 16px rgba(18,43,51,.04);
}
.header-inner{
  display:flex;min-height:76px;align-items:center;
  justify-content:space-between;gap:24px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-text-900);flex-shrink:0;}
.brand:hover{color:var(--c-text-900);}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  background:linear-gradient(170deg,var(--c-primary),var(--c-primary-600));
  color:#fff;display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 8px 18px rgba(31,110,140,.25);
}
.brand-mark svg{width:21px;height:21px;}
.brand-text{
  font-size:23px;font-weight:800;line-height:1.1;
  letter-spacing:.02em;display:flex;align-items:center;gap:2px;
}
.brand-sub{
  font-size:11px;font-weight:700;line-height:1;color:#fff;
  background:var(--c-accent);border-radius:7px;
  padding:5px 7px;margin-left:5px;letter-spacing:.08em;
}
.site-nav{display:flex;align-items:center;gap:14px;}
.site-nav ul{display:flex;align-items:center;gap:2px;}
.site-nav ul a{
  display:inline-flex;align-items:center;padding:9px 14px;
  border-radius:999px;font-size:15px;font-weight:500;
  color:var(--c-text-700);line-height:1.2;transition:all .22s ease;
}
.site-nav ul a:hover{color:var(--c-primary-700);background:var(--c-primary-100);}
.site-nav ul a.active{color:var(--c-primary-700);background:var(--c-primary-100);font-weight:650;}
.site-nav .btn{padding:10px 22px;font-size:15px;}
.nav-toggle{display:none;}

/* Article page */
.article-page{
  position:relative;padding:clamp(34px,5vw,62px) 0 clamp(50px,6vw,84px);
  background:
    radial-gradient(circle at 10% 12%,rgba(31,110,140,.05),transparent 30%),
    radial-gradient(circle at 92% 40%,rgba(232,133,59,.05),transparent 26%),
    var(--c-bg);
}
.breadcrumb-bar{padding:18px 0 4px;}
.breadcrumb-line{font-size:14px;color:var(--c-text-300);}
.breadcrumb-line a{color:var(--c-text-500);}
.breadcrumb-line a:hover{color:var(--c-primary-600);}
.breadcrumb-line .crumb-divider{margin:0 7px;color:#BED0D5;font-style:normal;}
.article-paper{
  max-width:880px;margin:0 auto;background:var(--c-surface);
  border:1px solid var(--c-border-light);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-md);padding:clamp(28px,4.6vw,60px);
}
.article-head{max-width:720px;margin:0 auto 36px;}
.article-chip{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;
  font-weight:700;letter-spacing:.04em;color:var(--c-primary-700);
  background:var(--c-primary-100);border:1px solid #C6E2EA;
  border-radius:999px;padding:5px 14px;
}
.article-head h1{
  margin:18px 0 16px;font-size:clamp(29px,4vw,38px);
  font-weight:800;line-height:1.36;letter-spacing:.015em;color:var(--c-text-900);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;
  gap:8px 18px;color:var(--c-text-300);font-size:14px;
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:5px;}
.article-meta .meta-dot{width:3px;height:3px;border-radius:50%;background:#B9CBD0;display:inline-block;}
.article-divider{border:0;height:1px;background:linear-gradient(90deg,transparent,var(--c-border) 8%,var(--c-border) 92%,transparent);margin:30px auto;max-width:740px;}
.article-body{max-width:720px;margin:0 auto;color:var(--c-text-700);}
.article-body p{font-size:16px;line-height:1.95;margin-bottom:1.55em;}
.article-body p:last-child{margin-bottom:0;}
.article-body h2{
  font-size:clamp(22px,2.6vw,27px);font-weight:750;line-height:1.48;
  color:var(--c-text-900);margin:2em 0 .75em;
}
.article-body h3{
  font-size:clamp(19px,2.2vw,22px);font-weight:700;line-height:1.5;
  color:var(--c-text-900);margin:1.8em 0 .7em;
}
.article-body ul,.article-body ol{margin:0 0 1.6em;padding-left:1.4em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:.55em;font-size:16px;line-height:1.85;}
.article-body blockquote{
  margin:1.8em 0;padding:18px 22px;border-left:4px solid var(--c-primary);
  background:var(--c-primary-100);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--c-text-700);font-size:16px;
}
.article-body blockquote p{margin-bottom:0;}
.article-body img{border-radius:var(--radius-md);box-shadow:var(--shadow-sm);width:auto;}
.article-body img + em{display:block;text-align:center;font-size:14px;color:var(--c-text-300);margin-top:10px;}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.8em 0;border-radius:var(--radius-sm);
  overflow:hidden;font-size:15px;
  display:block;overflow-x:auto;
}
.article-body th,.article-body td{border:1px solid var(--c-border-light);padding:12px 14px;text-align:left;}
.article-body th{background:var(--c-bg-deep);color:var(--c-text-900);font-weight:700;}
.article-body pre{
  background:#102A33;color:#DAF0F4;padding:20px;border-radius:var(--radius-md);
  overflow:auto;font-size:14px;line-height:1.7;margin:1.8em 0;
}
.article-body code{
  font-family:SFMono-Regular,Consolas,Menlo,monospace;font-size:.92em;
  background:var(--c-bg-deep);color:var(--c-primary-700);padding:2px 7px;border-radius:6px;
}
.article-body pre code{background:transparent;color:inherit;padding:0;}
.article-foot{
  max-width:720px;margin:44px auto 0;padding-top:28px;
  border-top:1px solid var(--c-border-light);
  display:flex;align-items:center;flex-wrap:wrap;gap:14px;
  justify-content:space-between;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.tag-chip{
  display:inline-flex;padding:6px 14px;border-radius:999px;
  font-size:13px;font-weight:600;color:var(--c-text-500);
  border:1px solid var(--c-border);background:var(--c-surface);
}
.back-home{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14px;font-weight:600;color:var(--c-primary-600);
  padding:8px 4px;
}
.back-home:hover{color:var(--c-primary-700);text-decoration:underline;text-underline-offset:4px;}

/* Empty state */
.empty-card{
  max-width:640px;margin:30px auto 0;background:var(--c-surface);
  border:1px dashed var(--c-border);border-radius:var(--radius-lg);
  padding:clamp(36px,5vw,60px);text-align:center;
  box-shadow:var(--shadow-sm);
}
.empty-card .empty-mark{
  width:58px;height:58px;margin:0 auto 22px;
  border-radius:18px;background:var(--c-bg-deep);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
}
.empty-card .empty-mark svg{width:28px;height:28px;}
.empty-card h1{font-size:clamp(26px,3vw,34px);color:var(--c-text-900);font-weight:800;}
.empty-card p{margin:14px 0 26px;color:var(--c-text-500);font-size:15px;}

/* Explore */
.continue-section{padding:clamp(58px,7vw,88px) 0;background:var(--c-bg-deep);}
.continue-card{
  display:block;height:100%;background:var(--c-card);
  border-radius:18px;overflow:hidden;
  box-shadow:var(--shadow-sm);border:1px solid var(--c-border-light);
  transition:transform .28s ease,box-shadow .28s ease;
}
.continue-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);color:var(--c-text-900);}
.continue-card .card-media{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(150deg,#DBEEF4,#F7FAFA);}
.continue-card .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
.continue-card:hover .card-media img{transform:scale(1.05);}
.continue-card .card-body{padding:22px 24px 24px;}
.continue-card .card-chip{
  display:inline-block;font-size:12px;font-weight:700;color:var(--c-accent-600);
  background:var(--c-accent-100);border-radius:999px;padding:4px 11px;margin-bottom:12px;
}
.continue-card h3{font-size:20px;font-weight:760;line-height:1.45;margin-bottom:9px;color:var(--c-text-900);}
.continue-card p{font-size:14px;line-height:1.8;color:var(--c-text-500);margin:0;}
.explore-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;
  color:var(--c-primary-600);font-weight:600;white-space:nowrap;
}
.link-more:hover{color:var(--c-primary-700);text-decoration:underline;text-underline-offset:5px;}

/* CTA */
.cta-section{
  position:relative;overflow:hidden;background:var(--c-text-900);
  padding:clamp(58px,6vw,84px) 0;
}
.cta-section::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.18;filter:saturate(.7);
}
.cta-section .container{position:relative;z-index:1;}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:28px;flex-wrap:wrap;
}
.cta-content{flex:1 1 480px;max-width:760px;}
.cta-content .kicker{background:rgba(255,255,255,.14);color:#fff;}
.cta-content h2{
  color:#fff;font-size:clamp(25px,3vw,33px);line-height:1.45;
  font-weight:800;margin:17px 0 10px;letter-spacing:.02em;
}
.cta-content p{color:#B9CAD0;font-size:16px;line-height:1.85;margin:0;}
.cta-inner .btn-accent{padding:16px 34px;font-size:16px;}

/* Footer */
.site-footer{background:#0D1E25;color:#C0D1D6;padding-top:62px;}
.site-footer .brand{color:#fff;}
.site-footer .brand-text{font-size:21px;}
.site-footer .brand-sub{background:var(--c-primary);color:#fff;}
.footer-main{
  display:grid;grid-template-columns:2.2fr 1fr 1fr 1.3fr;
  gap:40px;padding-bottom:48px;
}
.footer-brand-desc{font-size:14px;line-height:1.85;color:#91AEB7;max-width:330px;margin-top:16px;}
.footer-title{font-size:16px;color:#fff;font-weight:650;margin-bottom:18px;}
.footer-links li{margin-bottom:9px;}
.footer-links a{color:#A7C1C8;font-size:14px;transition:color .2s ease,padding-left .2s ease;}
.footer-links a:hover{color:#fff;padding-left:3px;}
.footer-contact p{font-size:14px;line-height:1.9;color:#B7CBD0;}
.footer-service-time{font-size:13px;color:#77969F;border-left:3px solid var(--c-primary);padding-left:12px;margin-top:14px;line-height:1.7;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;flex-wrap:wrap;padding:22px 0 26px;
  color:#82A0A9;font-size:13px;
}
.footer-bottom a{color:#A7C1C8;}
.footer-bottom a:hover{color:#fff;}

/* Responsive */
@media (max-width:1080px){
  .nav-toggle{
    display:inline-flex;width:42px;height:42px;border-radius:12px;
    border:1px solid var(--c-border);background:var(--c-surface);
    align-items:center;justify-content:center;flex-direction:column;gap:5px;
    transition:box-shadow .2s ease;margin-left:auto;
  }
  .nav-toggle:hover{box-shadow:var(--shadow-sm);}
  .nav-toggle span{width:18px;height:2px;background:var(--c-text-900);border-radius:2px;transition:transform .25s ease,opacity .2s ease;}
  .nav-toggle.active span:nth-child(1){transform:translateY(3.5px) rotate(45deg);}
  .nav-toggle.active span:nth-child(2){opacity:0;}
  .nav-toggle.active span:nth-child(3){transform:translateY(-3.5px) rotate(-45deg);}
  .site-nav{
    position:fixed;top:68px;left:0;right:0;background:var(--c-surface);
    border-bottom:1px solid var(--c-border-light);box-shadow:var(--shadow-lg);
    padding:20px clamp(20px,4vw,40px) 26px;
    opacity:0;pointer-events:none;transform:translateY(-12px);
    transition:opacity .26s ease,transform .26s ease;
    flex-direction:column;align-items:stretch;
    z-index:59;overflow:auto;max-height:calc(100vh - 72px);
  }
  .site-nav.open{opacity:1;pointer-events:auto;transform:translateY(0);}
  .site-nav ul{flex-direction:column;align-items:stretch;margin-bottom:12px;}
  .site-nav ul a{justify-content:center;font-size:16px;padding:13px 16px;}
  .site-nav .btn{margin-top:12px;width:100%;}
  .header-inner{min-height:68px;}
}
@media (max-width:900px){
  .article-paper{padding:30px 28px;}
  .footer-main{grid-template-columns:1fr 1fr;gap:34px;}
  .continue-section .section-head{flex-direction:column;align-items:flex-start;}
  .explore-grid{grid-template-columns:1fr 1fr;}
  .explore-grid .continue-card:last-child{grid-column:1/-1;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:620px){
  .article-paper{border-radius:18px;padding:24px 18px;}
  .article-head h1{font-size:27px;line-height:1.4;}
  .article-body p{font-size:15px;line-height:1.9;}
  .explore-grid{grid-template-columns:1fr;}
  .explore-grid .continue-card:last-child{grid-column:auto;}
  .section-head{flex-direction:column;align-items:flex-start;}
  .footer-main{grid-template-columns:1fr;}
  .cta-inner{flex-direction:column;}
  .cta-inner .btn{padding:14px 30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .breadcrumb-line{font-size:13px;}
}

/* roulang page: category2 */
/* ========== CSS Variable System ========== */
:root{
  --c-primary: #1F6E8C;
  --c-primary-600: #17596F;
  --c-primary-700: #10465A;
  --c-primary-100: #DBEEF4;
  --c-accent: #E8853B;
  --c-accent-600: #D16E2A;
  --c-accent-100: #FCE8D9;
  --c-bg: #F7FAFA;
  --c-bg-deep: #EAF2F3;
  --c-surface: #FFFFFF;
  --c-card: #FFFFFF;
  --c-text-900: #122B33;
  --c-text-700: #334E58;
  --c-text-500: #607984;
  --c-text-300: #92A6AE;
  --c-border: #DCE7EA;
  --c-border-light: #EAF1F3;
  --shadow-sm: 0 2px 12px rgba(18,43,51,.06);
  --shadow-md: 0 8px 28px rgba(18,43,51,.09);
  --shadow-lg: 0 20px 48px rgba(17,50,60,.13);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 16px;
  --fs-hero: clamp(32px, 4vw, 44px);
  --fs-h1: clamp(28px, 3vw, 36px);
  --fs-h2: clamp(26px, 2.4vw, 32px);
  --fs-h3: clamp(18px, 1.6vw, 22px);
  --fs-h4: clamp(16px, 1.2vw, 18px);
  --fs-body: 16px;
  --fs-secondary: 15px;
  --fs-caption: 13px;
  --container: 1280px;
  --space-section: clamp(60px, 7vw, 88px);
}
*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;background:var(--c-bg);color:var(--c-text-900);line-height:1.8;-webkit-font-smoothing:antialiased}
body.nav-open{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .25s}
a:hover{color:var(--c-primary-600)}
button{font-family:inherit;cursor:pointer;border:none;background:none}
ul{list-style:none}
::selection{background:var(--c-primary-100)}
.container{max-width:var(--container);margin-inline:auto;padding-inline:clamp(16px,4vw,40px)}
section{scroll-margin-top:110px}
.section{padding-block:var(--space-section)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--c-primary);background:var(--c-primary-100);padding:6px 14px 7px 16px;border-radius:99px;margin-bottom:18px;line-height:1.4}
.section-head{width:100%;display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:clamp(28px,4vw,48px);flex-wrap:wrap}
.section-head h2{font-size:var(--fs-h2);line-height:1.3;font-weight:800;letter-spacing:.02em;color:var(--c-text-900);position:relative;padding-left:18px}
.section-head h2:before{content:"";position:absolute;left:0;top:0;height:100%;width:4px;border-radius:4px;background:var(--c-primary)}
/**
 * shared-button / badge / tag base
 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;line-height:1.2;padding:13px 28px;border-radius:3px;background:var(--c-surface);color:var(--c-text-900);border:1.5px solid var(--c-border);transition:all .25s ease;cursor:pointer;text-align:center}
.btn-primary{background:linear-gradient(165deg,var(--c-primary),var(--c-primary-600));color:#fff;border-color:transparent;box-shadow:0 8px 20px rgba(31,110,140,.18)}
.btn-primary:hover{background:var(--c-primary-700);color:#fff;transform:translateY(-2px);box-shadow:0 12px 30px rgba(17,65,86,.24)}
.btn-accent{background:linear-gradient(165deg,var(--c-accent),var(--c-accent-600));color:#fff;border-color:transparent;box-shadow:0 8px 20px rgba(232,133,59,.22)}
.btn-accent:hover{background:var(--c-accent-600);color:#fff;transform:translateY(-2px);box-shadow:0 12px 30px rgba(209,110,42,.28)}
.btn-line{background:transparent;color:var(--c-primary-600);border:1.5px solid var(--c-primary);font-weight:500}
.btn-line:hover{background:var(--c-primary-100);border-color:var(--c-primary);color:var(--c-primary-700);transform:translateY(-2px)}
.btn:active{transform:translateY(0) scale(.98);box-shadow:none}
button:focus-visible,a:focus-visible,.accordion-trigger:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px dashed var(--c-primary);outline-offset:4px}
.badge{display:inline-block;background:var(--c-primary-100);color:var(--c-primary-700);font-size:12px;line-height:1;padding:5px 12px;border-radius:99px;font-weight:600;letter-spacing:.03em;white-space:nowrap}
.badge-orange{background:var(--c-accent-100);color:var(--c-accent-600)}
/* ======== button-end ======== */

/* ========== Top Bar ========== */
.topbar{background:var(--c-text-900);color:#B7CBD1;height:40px;font-size:13px;letter-spacing:.02em}
.topbar .container{display:flex;align-items:center;justify-content:space-between;height:100%}
.topbar-domain{display:flex;align-items:center;gap:8px}
.topbar-domain i{color:var(--c-accent);font-style:normal}
.topbar-links{display:flex;align-items:center;gap:20px}
.topbar-links a{color:#B7CBD1;opacity:.9;transition:opacity .2s;position:relative}
.topbar-links a:after{content:"";position:absolute;bottom:-2px;left:0;width:0;height:1px;background:var(--c-primary-100);transition:width .3s}
.topbar-links a:hover{color:#fff;opacity:1}
.topbar-links a:hover:after{width:100%}
/* ========== Header Main Nav ========== */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.94);backdrop-filter:blur(6px);border-bottom:1px solid var(--c-border-light);box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:82px;gap:28px}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-text-900)}
.brand-mark{width:38px;height:38px;border-radius:10px;background:linear-gradient(170deg,var(--c-primary),var(--c-primary-700));display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 4px 14px rgba(31,110,140,.18)}
.brand-mark svg{display:block}
.brand-text{font-size:22px;font-weight:800;letter-spacing:.02em;line-height:1;white-space:nowrap;display:flex;align-items:center}
.brand-sub{display:inline-block;background:var(--c-primary-100);color:var(--c-primary-600);font-size:12px;font-weight:700;padding:3px 8px;border-radius:5px;margin-left:7px;letter-spacing:.06em}
.site-nav{display:flex;align-items:center;gap:8px;margin-left:auto}
.site-nav ul{display:flex;align-items:center;gap:4px}
.site-nav ul a{display:block;padding:10px 12px;font-size:15px;font-weight:500;color:var(--c-text-700);border-radius:8px;line-height:1.4;position:relative}
.site-nav ul a:hover{color:var(--c-primary);background:var(--c-primary-100)}
.site-nav ul a.active{color:var(--c-primary-700);font-weight:700}
.site-nav ul a.active:before{content:"";position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:6px;height:6px;border-radius:50%;background:var(--c-accent)}
.site-nav .btn-accent{margin-left:14px;padding:11px 22px}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;justify-content:center;align-items:center;background:var(--c-surface);border:1px solid var(--c-border);position:relative;z-index:20}
.nav-toggle span,.nav-toggle span:before,.nav-toggle span:after{content:"";position:absolute;width:20px;height:2px;background:var(--c-text-900);border-radius:2px;transition:all .3s ease}
.nav-toggle span{position:relative;margin:0 auto}
.nav-toggle span:before{top:-6px}
.nav-toggle span:after{top:6px}
.nav-toggle.open span{background:transparent}
.nav-toggle.open span:before{top:0;transform:rotate(45deg)}
.nav-toggle.open span:after{top:0;transform:rotate(-45deg)}
/* ========== Breadcrumb ========== */
.breadcrumb-shell{background:var(--c-bg);padding:24px 0 0;border-bottom:1px dashed var(--c-border-light)}
.breadcrumb{font-size:13px;color:var(--c-text-300);display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb a{color:var(--c-text-500)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .crumb-sep{opacity:.65;font-size:12px}
.breadcrumb .cur{color:var(--c-primary);font-weight:600}
/* ========== Hero ========== */
.help-hero{position:relative;padding:clamp(44px,6vw,80px) 0 30px;overflow:hidden}
.help-hero:before{content:"";position:absolute;inset:0;background:
    radial-gradient(circle at 92% 22%, rgba(31,110,140,.10) 0%, rgba(31,110,140,0) 38%),
    radial-gradient(circle at 25% 95%, rgba(232,133,59,.08) 0%, rgba(232,133,59,0) 42%);
    pointer-events:none}
.help-hero__inner{position:relative;max-width:980px;margin-inline:auto;text-align:center}
.help-hero h1{font-size:var(--fs-h1);letter-spacing:.02em;line-height:1.36;font-weight:800;color:var(--c-text-900);margin-bottom:14px}
.help-hero h1 strong{color:var(--c-primary);font-weight:800}
.help-hero__lead{font-size:var(--fs-body);line-height:1.9;color:var(--c-text-700);max-width:720px;margin:0 auto 22px}
.hero-badges{display:flex;justify-content:center;align-items:center;gap:12px;flex-wrap:wrap;margin-top:18px}
.hero-badges .b-line{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--c-text-500);border:1px solid var(--c-border);background:rgba(255,255,255,.8);backdrop-filter:blur(4px);border-radius:99px;padding:6px 16px;font-weight:400}
.hero-badges .b-line i{color:var(--c-primary);font-style:normal}
/* decorative wave */
.help-deco{position:absolute;bottom:-40px;left:0;width:100%;height:106px;pointer-events:none;opacity:.4;z-index:-1}
/* ====== mini scene nav ====== */
.quick-help{background:#fff;border-radius:var(--radius-lg);border:1px solid var(--c-border-light);box-shadow:var(--shadow-sm);padding:14px 20px;max-width:940px;margin:-22px auto 0;position:relative;z-index:3;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.quick-help__label{font-size:14px;font-weight:700;color:var(--c-text-900);display:inline-flex;align-items:center;gap:8px}
.quick-help__label span{color:var(--c-accent);font-weight:800}
.quick-help group{display:flex;gap:10px;flex-wrap:wrap;flex:1}
.quick-help a{flex:0 0 auto;font-size:14px;padding:7px 16px;border-radius:99px;background:var(--c-bg);border:1px solid var(--c-border);color:var(--c-text-700);transition:.25s}
.quick-help a:hover{background:var(--c-primary-100);border-color:var(--c-primary);color:var(--c-primary-700)}
/* ========== Hub ========== */
.hub-layout{display:grid;grid-template-columns:.82fr 1.06fr;gap:clamp(24px,3vw,50px);align-items:start}
.hub-intro .badge{margin-bottom:16px}
.hub-intro h2{font-size:clamp(24px,2vw,30px);line-height:1.4;margin-bottom:18px;color:var(--c-text-900)}
.hub-feature{margin:24px 0 18px;width:100%}
.hub-feature li{display:flex;gap:14px;padding:15px 0;border-bottom:1px dashed var(--c-border-light)}
.hub-feature li:last-child{border-bottom:none}
.hub-feature li i{flex:0 0 20px;height:20px;margin-top:6px;border-radius:50%;background:var(--c-primary-100);color:var(--c-primary-600);font-style:normal;font-size:12px;display:flex;align-items:center;justify-content:center}
.hub-note{background:var(--c-bg-deep);border-radius:var(--radius-md);padding:18px 20px;font-size:15px;color:var(--c-text-700);position:relative}
.hub-note span{display:block;font-weight:700;color:var(--c-text-900);margin-bottom:4px;font-size:15px}
/* right quick cards */
.hub-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.hub-card{background:var(--c-card);border:1px solid var(--c-border-light);border-radius:var(--radius-md);padding:24px 22px;box-shadow:var(--shadow-sm);transition:.3s;position:relative;overflow:hidden}
.hub-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-5px);border-color:transparent}
.hub-card .card-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.hub-card .icon-wrap{width:42px;height:42px;border-radius:12px;background:linear-gradient(165deg,var(--c-primary),var(--c-primary-600));color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px;font-style:normal;font-weight:300;box-shadow:0 6px 12px rgba(31,110,140,.14)}
.hub-card:hover .icon-wrap{transform:rotate(6deg) scale(1.05);transition:.35s}
.hub-card h3{font-size:var(--fs-h4);color:var(--c-text-900);margin-bottom:8px;font-weight:700}
.hub-card p{font-size:14px;color:var(--c-text-500);line-height:1.8}
.hub-card .go-link{margin-top:14px;display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--c-primary-600);font-weight:600}
.hub-card .go-link:after{content:"→";transition:transform .25s}
.hub-card:hover .go-link:after{transform:translateX(4px)}
/* ========== content entry block ========== */
.panel-sticky-side{display:grid;grid-template-columns:300px 1fr;gap:clamp(28px,4vw,60px)}
#id 目录侧卡
.content-side-list{position:sticky;top:110px;border:1px solid var(--c-border);box-shadow:var(--shadow-sm);border-radius:var(--radius-md);background:#fff;padding:20px;max-height:calc(100vh - 150px);overflow:auto}
.menu-title{font-size:14px;font-weight:700;color:var(--c-text-900);padding-bottom:15px;margin-bottom:8px;border-bottom:1px solid var(--c-border-light);display:flex;align-items:center;gap:8px}
.side-index-list li a{display:block;padding:10px 12px;border-radius:10px;color:var(--c-text-700);font-size:15px;border-left:3px solid transparent;margin-bottom:3px;line-height:1.5}
.side-index-list li a:hover{background:var(--c-bg);color:var(--c-primary);border-left-color:var(--c-primary)}
.side-index-list li.active a{background:var(--c-bg);color:var(--c-primary);border-left-color:var(--c-accent);font-weight:600}
/* guide blocks */
.help-main{display:grid;gap:36px}
.guide-block{background:#fff;border:1px solid var(--c-border-light);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm)}
.guide-block__head{display:flex;justify-content:space-between;gap:16px;padding:22px 28px;border-bottom:1px dashed var(--c-border);align-items:center}
.guide-block__head h2{font-size:20px;font-weight:800;letter-spacing:.02em}
.guide-block__head h2 .step-num{margin-right:8px;color:var(--c-primary)}
.guide-block .more-list a{font-size:14px;color:var(--c-text-500)}
.guide-block .more-list a:hover{color:var(--c-primary)}
.guide-block__body{padding:26px 28px 20px}
/* time-line / data list */
.guide-steps{display:flex;flex-direction:column;gap:22px}
.guide-step{display:flex;gap:18px}
.guide-step .step-dot{flex:none;width:30px;height:30px;border-radius:10px;background:var(--c-primary-100);color:var(--c-primary-600);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800}
.guide-step .step-dot.hot{background:var(--c-accent-100);color:var(--c-accent-600)}
.guide-step .step-content{flex:1}
.guide-step h4{font-size:16px;color:var(--c-text-900);font-weight:700;line-height:1.5;margin-bottom:6px}
.guide-step p{font-size:15px;color:var(--c-text-500);line-height:1.85}
/* ========== module scene grid ===== */
.module-connect{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.module-cards{background:#fff;border:1px solid var(--c-border);border-radius:12px;padding:22px;transition:.28s;position:relative}
.module-cards:hover{box-shadow:var(--shadow-lg);transform:translateY(-5px)}
.module-cards i.card-mini-icon{width:38px;height:38px;background:var(--c-primary-100);display:flex;align-items:center;justify-content:center;border-radius:10px;font-weight:700;color:var(--c-primary-700);margin-bottom:14px;font-style:normal;font-size:18px}
.module-cards h4{color:var(--c-text-900);font-size:17px;line-height:1.5;margin-bottom:6px;font-weight:700}
.module-cards p{color:var(--c-text-500);font-size:14px}
.module-cards a{position:absolute;inset:0;z-index:1;border-radius:12px}
/* ========== trust panel ========== */
.trust-panel{background:var(--c-text-900);border-radius:var(--radius-lg);padding:clamp(28px,4vw,44px);position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:24px;color:rgba(255,255,255,.9);overflow:hidden}
.trust-panel:after{content:"";position:absolute;right:-40px;top:-40px;width:260px;height:260px;border-radius:50%;background:radial-gradient(closest-side,rgba(219,238,244,.14),transparent 75%);pointer-events:none}
.trust-info h2{font-size:24px;margin-bottom:10px;color:#fff;letter-spacing:.01em;padding:0;background:none}
.trust-info p{font-size:15px;opacity:.86;line-height:1.9}
.trust-info .btn{margin-top:20px}
.trust-strip{display:flex;flex-direction:column;justify-content:center;gap:14px}
.trust-item{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px dashed rgba(255,255,255,.15);font-size:14px}
.trust-item:last-child{border-bottom:none}
.trust-item i{font-style:normal;font-weight:800;color:var(--c-accent);background:rgba(232,133,59,.16);padding:4px 10px;border-radius:6px;letter-spacing:.02em}
/* ========== Cta band ========== */
.cta-band{background:linear-gradient(110deg,#fff 26%,var(--c-primary-100));border:1px solid var(--c-border-light);box-shadow:none;padding:36px;text-align:left}
.cta-band h2::before{display:none}
.cta-band h2{font-size:24px;letter-spacing:.02em;color:var(--c-primary-600);margin-bottom:12px;padding-left:0}
.cta-form-grid{display:grid;grid-template-columns:1.2fr .7fr;gap:30px;align-items:center}
.form-fields{display:flex;flex-wrap:wrap;gap:14px}
.form-field{width:calc(50% - 7px)}
.form-field.full{width:100%}
.form-fields input,.form-fields select,.form-fields textarea{width:100%;border:1.5px solid var(--c-border);background:#fff;border-radius:10px;padding:12px 16px;font-size:15px;color:var(--c-text-900);transition:all .25s;line-height:1.4}
.form-fields textarea{height:94px;resize:vertical}
.form-fields input:focus,.form-fields select:focus,.form-fields textarea:focus{border-color:var(--c-primary);outline:none;box-shadow:0 0 0 4px rgba(31,110,140,.08)}
.form-cta-btn .btn{width:100%;justify-content:center;padding:14px 28px}
.cta-perks{display:flex;flex-direction:column;gap:16px}
.cta-perk{display:flex;align-items:center;gap:12px;font-size:15px;color:var(--c-text-700)}
.cta-perk i{width:30px;height:30px;background:var(--c-accent-100);border-radius:50%;color:var(--c-accent-600);display:flex;align-items:center;justify-content:center;font-style:normal;font-weight:800}
.btn-success-hint{display:none;background:linear-gradient(120deg,#dbebe3,#e9f7f1,#def2e9);color:#2A9D71;font-size:15px;font-weight:600;width:100%;justify-content:center;margin-top:12px;padding:11px;border-radius:10px}
/* ========== footer ========== */
.site-footer{background:var(--c-text-900);color:#A6BAC1;padding:70px 0 30px;margin-top:80px;border-top:6px solid var(--c-primary)}
.footer-main{display:grid;grid-template-columns:1.5fr 1fr .9fr 1.3fr;gap:44px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand{max-width:360px}
.footer-brand .brand{color:#fff;margin-bottom:14px}
.footer-brand .brand-text{font-size:20px}
.footer-brand-desc{font-size:14px;color:#A6BAC1;line-height:1.9}
.footer-title{color:#fff;font-size:15px;font-weight:700;margin-bottom:14px;padding-bottom:9px;border-bottom:1px solid rgba(255,255,255,.1);letter-spacing:.02em}
.footer-links li{margin-bottom:8px}
.footer-links a{color:#A6BAC1;font-size:14.5px;transition:.25s}
.footer-links a:hover{color:#fff;padding-left:5px}
.footer-links a::before{content:"› ";opacity:.5;margin-right:5px;font-weight:light}
.footer-contact p{font-size:14px;line-height:1.9;margin-bottom:5px}
.footer-service-time{font-size:13px;opacity:.8;background:rgba(255,255,255,.06);border-radius:10px;padding:12px 12px;line-height:1.7;margin-top:15px}
.footer-bottom{display:flex;justify-content:space-between;gap:18px;margin-top:20px;padding-top:4px;font-size:13px;color:rgba(255,255,255,.55);flex-wrap:wrap}
.footer-bottom a{color:#A6BAC1}
.footer-bottom a:hover{color:#fff}
/* ========== faq ========== */
.faq-layout{display:grid;grid-template-columns:.64fr 1.36fr;gap:clamp(20px,4vw,48px);align-items:start}
.faq-side .side-label{color:var(--c-primary);font-size:14px;margin-bottom:10px;font-weight:600}
.faq-side h2{font-size:28px;color:var(--c-text-900);margin-bottom:14px;line-height:1.4
.faq-contact-line{display:inline-flex;gap:12px;margin-top:22px;flex-wrap:wrap}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{border-radius:var(--radius-md);border:1px solid var(--c-border);background:#fff;overflow:hidden;transition:border-color .25s,box-shadow .25s}
.faq-item:hover{border-color:#AECEDB;box-shadow:var(--shadow-sm)}
.faq-item.open{border-color:var(--c-primary);box-shadow:var(--shadow-sm)}
.faq-item .faq-q{display:flex;align-items:center;gap:12px;width:100%;padding:18px 20px;font-size:15px;font-weight:600;color:var(--c-text-900);text-align:left;line-height:1.5}
.faq-item .faq-q i{color:var(--c-primary);font-style:normal;font-weight:700}
.faq-item .faq-q .faq-chevron{margin-left:auto;font-style:normal;font-size:18px;color:var(--c-text-300);transition:transform .3s;font-weight:300}
.faq-item.open .faq-q{background:var(--c-primary-100);color:var(--c-primary-700)}
.faq-item.open .faq-q i{color:var(--c-primary)}
.faq-item.open .faq-chevron{transform:rotate(180deg);color:var(--c-primary)}
.faq-a{display:none;padding:14px 20px 18px;font-size:14.5px;line-height:1.9;background:#fff}
.faq-item.open .faq-a{display:block}
/* ========== CTA section ========== */
.cta-section{padding-top:10px}
/* ===== responsive ===== */
@media screen and (max-width: 1199px){
  .hub-layout{grid-template-columns:1fr}
  .module-connect{grid-template-columns:repeat(2,1fr)}
  .footer-main{grid-template-columns:1.2fr 1fr .8fr}
}
@media screen and (max-width: 1023px){
  .topbar .container{justify-content:center}
  .topbar-links{display:none}
  .site-nav{position:fixed;top:0;right:-340px;width:min(340px,88vw);height:100vh;background:#fff;z-index:15;flex-direction:column;align-items:flex-start;gap:10px;padding:100px 34px 30px;box-shadow:-12px 0 40px rgba(18,43,51,.1);transition:right .4s ease}
  .site-nav.open{right:0}
  .site-nav ul{flex-direction:column;align-items:flex-start;gap:4px;width:100%;margin-bottom:20px}
  .site-nav ul a{width:100%;padding:13px 12px;font-size:16px}
  .site-nav ul a.active:before{left:8px;top:50%;transform:translateY(-50%)}
  .site-nav .btn{width:100%;justify-content:center;padding:14px}
  .nav-toggle{display:inline-flex}
  .panel-sticky-side{grid-template-columns:1fr;gap:24px}
  .content-side-list{position:static;max-height:auto}
  .faq-layout{grid-template-columns:1fr}
  .cta-form-grid{grid-template-columns:1fr}
  .form-field{width:100%}
  .trust-panel{grid-template-columns:1fr}
  }
@media(max-width:767px){
  .module-connect{grid-template-columns:1fr}
  .footer-main{grid-template-columns:1fr 1fr}
  .hub-cards{grid-template-columns:1fr 1fr}
  .footer-bottom{flex-direction:column}
  .cta-band{padding:30px 22px}
  .guide-block__head,.guide-block__body{padding:20px}
}
@media(max-width:560px){
  .topbar-domain span{display:none}
  .brand-text{font-size:20px}
  .header-inner{height:72px;gap:12px}
  .hero-badges{flex-direction:column;}
  .hero-badges .b-line{width:100%;justify-content:flex-start}
  .quick-help{flex-direction:column;align-items:flex-start;padding:16px}
  .quick-help a{width:100%}
  .hub-cards{grid-template-columns:1fr}
  .footer-main{grid-template-columns:1fr 1fr;gap:30px}
  .form-fields{flex-direction:column}
  .form-field{width:100%}
  .trust-panel{padding:24px 18px}
  .guide-step{flex-wrap:wrap;gap:12px}
  .guide-step .step-dot{width:28px;height:28px}
  .section-head h2{font-size:22px}
  }

/* roulang page: category3 */
:root {
  --c-primary: #1F6E8C;
  --c-primary-600: #17596F;
  --c-primary-700: #10465A;
  --c-primary-100: #DBEEF4;
  --c-accent: #E8853B;
  --c-accent-600: #D16E2A;
  --c-accent-100: #FCE8D9;
  --c-bg: #F7FAFA;
  --c-bg-deep: #EAF2F3;
  --c-surface: #FFFFFF;
  --c-card: #FFFFFF;
  --c-text-900: #122B33;
  --c-text-700: #334E58;
  --c-text-500: #607984;
  --c-text-300: #92A6AE;
  --c-border: #DCE7EA;
  --c-border-light: #EAF1F3;
  --shadow-sm: 0 2px 12px rgba(18,43,51,.06);
  --shadow-md: 0 8px 28px rgba(18,43,51,.09);
  --shadow-lg: 0 20px 48px rgba(17,50,60,.13);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --container: 1280px;
  --section-pad: clamp(64px, 7vw, 88px);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  background: var(--c-bg);
  color: var(--c-text-900);
  font-size: 16px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--c-primary-600);
  text-decoration: none;
  transition: color .25s ease;
}

a:hover {
  color: var(--c-primary-700);
  text-decoration: underline;
}

button,
input,
textarea {
  font: inherit;
  color: inherit;
}

ul,
ol {
  list-style: none;
}

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 40px);
}

.section {
  padding: var(--section-pad) 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .25s ease, border-color .25s ease, box-shadow .25s ease, transform .22s ease;
  text-align: center;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn:focus-visible,
.nav-toggle:focus-visible,
.accordion-btn:focus-visible,
.security-card[tabindex]:focus-visible {
  outline: 2px dashed var(--c-primary);
  outline-offset: 4px;
}

.btn:active {
  transform: translateY(1px);
  box-shadow: none;
}

.btn-primary {
  background: var(--c-primary-600);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--c-primary-700);
  color: #fff;
  box-shadow: var(--shadow-md);
}

.btn-accent {
  background: var(--c-accent);
  color: #fff;
  box-shadow: 0 6px 18px rgba(232, 133, 59, .2);
}

.btn-accent:hover {
  background: var(--c-accent-600);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  border-color: var(--c-border);
  color: var(--c-text-700);
}

.btn-ghost:hover {
  background: rgba(255,255,255,.6);
  border-color: var(--c-primary);
  color: var(--c-primary-700);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--c-border-light);
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex-shrink: 0;
  color: var(--c-text-900);
  border-radius: 10px;
}

.brand:hover {
  text-decoration: none;
  color: var(--c-text-900);
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: var(--c-primary-100);
  color: var(--c-primary);
}

.brand-text {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .02em;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  white-space: nowrap;
}

.brand-sub {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--c-accent-100);
  color: var(--c-accent-600);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-left: auto;
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 26px;
}

.site-nav a {
  color: var(--c-text-700);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.4;
  border-radius: 6px;
  padding: 4px 0;
  position: relative;
}

.site-nav a:hover {
  color: var(--c-primary-700);
  text-decoration: none;
}

.site-nav .active {
  color: var(--c-primary);
  font-weight: 600;
}

.site-nav .active::after {
  content: "";
  position: absolute;
  left: 4px;
  right: 4px;
  bottom: -2px;
  height: 2px;
  border-radius: 2px;
  background: var(--c-primary);
}

.site-nav .btn {
  margin-left: 8px;
  padding: 9px 18px;
  font-size: 15px;
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  margin-left: auto;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 0;
  border-radius: 10px;
  cursor: pointer;
  position: relative;
  z-index: 120;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  display: block;
  width: 22px;
  height: 2px;
  border-radius: 4px;
  background: var(--c-text-900);
  transition: transform .25s ease, opacity .25s ease;
}

.nav-toggle span {
  position: relative;
}

.nav-toggle span::before {
  position: absolute;
  top: -7px;
  left: 0;
}

.nav-toggle span::after {
  position: absolute;
  top: 7px;
  left: 0;
}

.nav-toggle.open span {
  background: transparent;
}

.nav-toggle.open span::before {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span::after {
  transform: translateY(-7px) rotate(-45deg);
}

.main {
  overflow: hidden;
}

.page-hero {
  padding-top: clamp(48px, 5vw, 72px);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--c-text-500);
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--c-text-500);
}

.breadcrumb a:hover {
  color: var(--c-primary);
}

.breadcrumb .current {
  color: var(--c-text-700);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(350px, .98fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}

.hero-content {
  padding-bottom: 10px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--c-primary-100);
  color: var(--c-primary-700);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .02em;
  margin-bottom: 20px;
}

.page-hero h1 {
  font-size: clamp(36px, 4.4vw, 54px);
  line-height: 1.2;
  letter-spacing: .02em;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--c-text-900);
}

.hero-desc {
  max-width: 620px;
  color: var(--c-text-500);
  font-size: 17px;
  line-height: 1.95;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 32px;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  color: var(--c-text-500);
  font-size: 14px;
}

.hero-trust span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.hero-trust svg {
  color: var(--c-primary);
  flex-shrink: 0;
}

.trust-panel {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 24px;
  box-shadow: var(--shadow-lg);
  padding: 28px 26px;
  transition: box-shadow .3s ease;
}

.trust-panel-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--c-border-light);
  font-weight: 700;
  font-size: 17px;
  color: var(--c-text-900);
}

.pulse-dot {
  position: relative;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #2A9D71;
  display: block;
  flex-shrink: 0;
}

.pulse-dot::after {
  content: "";
  position: absolute;
  inset: -5px;
  border-radius: 50%;
  background: rgba(42,157,113,.3);
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0% { transform: scale(.55); opacity: 1; }
  70% { transform: scale(1.2); opacity: .1; }
  100% { transform: scale(.95); opacity: 0; }
}

.trust-panel ul {
  margin-top: 12px;
}

.trust-panel li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--c-border-light);
}

.trust-panel li:last-child {
  border-bottom: 0;
  padding-bottom: 2px;
}

.trust-panel li span {
  color: var(--c-text-500);
  font-size: 15px;
  flex-shrink: 0;
}

.trust-panel li strong {
  color: var(--c-text-900);
  font-size: 15px;
  font-weight: 600;
  text-align: right;
}

.trust-panel-note {
  margin-top: 10px;
  background: var(--c-bg);
  border-radius: 14px;
  padding: 14px 16px;
  font-size: 14px;
  color: var(--c-text-700);
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--c-primary-600);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.section-head {
  margin-bottom: clamp(32px, 4vw, 52px);
}

.section-head h2,
.page-title {
  font-size: clamp(30px, 3.6vw, 44px);
  line-height: 1.4;
  letter-spacing: .01em;
  font-weight: 700;
  color: var(--c-text-900);
  margin-bottom: 14px;
}

.section-head p {
  max-width: 780px;
  color: var(--c-text-500);
  font-size: 16px;
  line-height: 1.9;
}

.service-band {
  background: linear-gradient(180deg, rgba(219,238,244,.28), rgba(247,250,250,.2));
  border-top: 1px solid var(--c-border-light);
  border-bottom: 1px solid var(--c-border-light);
}

.security-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(18px, 2.6vw, 28px);
}

.security-card {
  display: flex;
  gap: 18px;
  background: var(--c-surface);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--c-border);
  border-radius: 20px;
  padding: 28px 26px;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}

.security-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--c-primary-100);
}

.security-icon {
  width: 50px;
  height: 50px;
  border-radius: 15px;
  background: var(--c-primary-100);
  color: var(--c-primary-600);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.security-card:nth-child(even) .security-icon {
  background: var(--c-accent-100);
  color: var(--c-accent-600);
}

.security-card h3 {
  font-size: 20px;
  line-height: 1.5;
  font-weight: 600;
  color: var(--c-text-900);
  margin-bottom: 8px;
}

.security-card p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--c-text-500);
  margin: 0;
}

.flow-section {
  background: var(--c-bg-deep);
  border-top: 1px solid var(--c-border-light);
  border-bottom: 1px solid var(--c-border-light);
}

.flow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.flow-item {
  position: relative;
  background: var(--c-surface);
  padding: 26px 22px 22px;
  border-radius: 20px;
  border: 1px solid var(--c-border-light);
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease;
}

.flow-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.flow-num {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--c-text-900);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 18px;
}

.flow-item:nth-child(2) .flow-num {
  background: var(--c-primary);
}

.flow-item:nth-child(3) .flow-num {
  background: var(--c-primary-600);
}

.flow-item:nth-child(4) .flow-num {
  background: var(--c-accent);
}

.flow-item h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--c-text-900);
  line-height: 1.6;
}

.flow-item p {
  font-size: 15px;
  color: var(--c-text-500);
  line-height: 1.85;
  margin: 0;
}

.audit-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(32px, 5vw, 72px);
}

.audit-media {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 5 / 4;
}

.audit-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s ease;
}

.audit-media:hover img {
  transform: scale(1.02);
}

.media-caption {
  position: absolute;
  left: 16px;
  bottom: 16px;
  background: rgba(255,255,255,.92);
  border-radius: 14px;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--c-text-700);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(8px);
}

.audit-text h2 {
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.4;
  color: var(--c-text-900);
  margin-bottom: 14px;
  font-weight: 700;
}

.audit-text > p {
  color: var(--c-text-500);
  margin-bottom: 20px;
  max-width: 560px;
}

.check-list {
  display: grid;
  gap: 14px;
  padding: 0;
}

.check-list li {
  background: var(--c-surface);
  border: 1px solid var(--c-border-light);
  border-left: 4px solid var(--c-primary);
  padding: 14px 16px 14px 18px;
  border-radius: 12px;
  color: var(--c-text-700);
  font-size: 15px;
  line-height: 1.8;
  transition: border-color .25s ease, background .25s ease, transform .2s ease;
}

.check-list li:hover {
  border-left-color: var(--c-accent);
  background: #fff;
  transform: translateX(3px);
}

.check-list strong {
  color: var(--c-text-900);
  font-weight: 600;
}

.faq-section {
  background: var(--c-bg);
}

.faq-layout {
  display: grid;
  grid-template-columns: minmax(270px, .5fr) minmax(0, 1fr);
  gap: clamp(30px, 5vw, 80px);
  align-items: start;
}

.faq-layout .section-head {
  position: sticky;
  top: 110px;
  margin-bottom: 0;
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-item {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 16px;
  overflow: hidden;
  transition: border-color .25s ease, box-shadow .25s ease;
}

.faq-item.active {
  border-color: var(--c-primary);
  box-shadow: var(--shadow-sm);
}

.accordion-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 22px;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  color: var(--c-text-900);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.6;
}

.chevron {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--c-text-300);
  transition: transform .35s ease, color .25s ease;
}

.faq-item.active .chevron {
  transform: rotate(180deg);
  color: var(--c-primary);
}

.accordion-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
}

.accordion-answer-inner {
  padding: 0 22px 20px;
  font-size: 15px;
  color: var(--c-text-500);
  line-height: 1.9;
  border-top: 0 solid var(--c-border-light);
}

.faq-item.active .accordion-answer-inner {
  border-top: 1px dashed var(--c-border-light);
  padding-top: 14px;
}

.cta-area {
  padding-bottom: var(--section-pad);
}

.cta-banner {
  background: var(--c-text-900);
  border-radius: 28px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(24px, 4vw, 56px);
  padding: clamp(34px, 5vw, 60px);
  color: #fff;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.cta-banner::after {
  content: "";
  position: absolute;
  right: -90px;
  bottom: -160px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  border: 30px solid rgba(255,255,255,.05);
}

.cta-copy {
  position: relative;
  z-index: 2;
}

.cta-copy h2 {
  font-size: clamp(26px, 3vw, 36px);
  line-height: 1.5;
  font-weight: 700;
  margin-bottom: 10px;
  color: #fff;
}

.cta-copy p {
  color: rgba(255,255,255,.78);
  font-size: 16px;
  max-width: 640px;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  flex-shrink: 0;
  position: relative;
  z-index: 2;
}

.site-footer {
  background: #10252C;
  color: rgba(255,255,255,.8);
  padding: 64px 0 0;
  border-top: 4px solid var(--c-primary-100);
}

.site-footer .brand {
  color: #fff;
}

.site-footer .brand .brand-mark {
  background: rgba(255,255,255,.12);
  color: #fff;
}

.site-footer .brand-text {
  color: #fff;
}

.site-footer .brand-sub {
  color: var(--c-accent-100);
  background: rgba(255,255,255,.12);
}

.footer-main {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 44px;
}

.footer-brand-desc {
  color: rgba(255,255,255,.68);
  font-size: 15px;
  line-height: 1.9;
  margin: 18px 0 0;
  max-width: 360px;
}

.footer-title {
  color: #fff;
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-links {
  display: grid;
  gap: 10px;
}

.footer-links a,
.footer-contact a {
  color: rgba(255,255,255,.68);
  font-size: 15px;
  transition: color .25s ease, padding-left .25s ease;
}

.footer-links a:hover,
.footer-contact a:hover {
  color: #fff;
  text-decoration: none;
  padding-left: 4px;
}

.footer-contact p {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255,255,255,.68);
  margin-bottom: 6px;
}

.footer-service-time {
  background: rgba(255,255,255,.06);
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 13px;
  color: rgba(255,255,255,.58);
  margin-top: 14px;
}

.footer-bottom {
  padding: 20px 0;
  border-top: 1px solid rgba(255,255,255,.1);
  font-size: 14px;
  color: rgba(255,255,255,.6);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 24px;
}

.footer-bottom a {
  color: rgba(255,255,255,.72);
}

.footer-bottom a:hover {
  color: #fff;
}

@media (max-width: 1100px) {
  .security-grid {
    grid-template-columns: 1fr;
  }

  .flow-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
}

@media (max-width: 1024px) {
  .header-inner {
    min-height: 68px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: fixed;
    top: 68px;
    right: 12px;
    width: min(78vw, 360px);
    max-height: calc(100vh - 88px);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: 18px;
    box-shadow: var(--shadow-lg);
    padding: 16px 18px;
    transform: translateX(110%);
    opacity: 0;
    visibility: hidden;
    transition: transform .35s ease, opacity .3s ease, visibility .3s ease;
    overflow-y: auto;
  }

  .site-nav.open {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
  }

  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    width: 100%;
  }

  .site-nav a,
  .site-nav .btn {
    display: block;
    padding: 12px 14px;
    margin: 0;
    font-size: 16px;
    border-radius: 10px;
  }

  .site-nav .active {
    background: var(--c-primary-100);
    color: var(--c-primary-700);
  }

  .site-nav .active::after {
    display: none;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .trust-panel {
    max-width: 650px;
  }

  .audit-grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    gap: 32px;
  }

  .faq-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .faq-layout .section-head {
    position: static;
  }
}

@media (max-width: 760px) {
  .section {
    --section-pad: 54px;
  }

  .page-hero {
    padding-top: 38px;
  }

  .hero-desc {
    font-size: 16px;
  }

  .audit-grid,
  .security-grid {
    grid-template-columns: 1fr;
  }

  .audit-media {
    aspect-ratio: 4 / 3;
    width: 100%;
  }

  .flow-grid {
    grid-template-columns: 1fr;
  }

  .cta-banner {
    flex-direction: column;
    align-items: flex-start;
  }

  .cta-actions {
    width: 100%;
  }

  .cta-actions .btn {
    flex: 1;
    min-width: 160px;
  }

  .footer-main {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    justify-content: center;
  }
}

@media (max-width: 520px) {
  .brand-mark {
    width: 34px;
    height: 34px;
  }

  .brand-text {
    font-size: 18px;
  }

  .brand-sub {
    font-size: 12px;
    padding: 1px 7px;
  }

  .site-header .header-inner {
    gap: 10px;
  }

  .page-hero h1 {
    font-size: clamp(31px, 8vw, 42px);
  }

  .trust-panel {
    padding: 22px 18px;
  }

  .trust-panel li {
    align-items: flex-start;
    flex-direction: column;
    gap: 2px;
  }

  .trust-panel li strong {
    text-align: left;
  }

  .hero-actions .btn {
    flex: 1;
    min-width: 140px;
  }

  .security-card,
  .flow-item {
    padding: 20px;
  }

  .accordion-btn {
    font-size: 16px;
    padding: 16px 18px;
  }

  .accordion-answer-inner {
    padding: 0 18px 18px;
  }

  .check-list li {
    font-size: 14px;
  }

  .cta-actions .btn {
    min-width: 100%;
  }
}

/* roulang page: category4 */
:root {
  --c-primary: #1F6E8C;
  --c-primary-600: #17596F;
  --c-primary-700: #10465A;
  --c-primary-100: #DBEEF4;
  --c-accent: #E8853B;
  --c-accent-600: #D16E2A;
  --c-accent-100: #FCE8D9;
  --c-bg: #F7FAFA;
  --c-bg-deep: #EAF2F3;
  --c-surface: #fff;
  --c-card: #fff;
  --c-text-900: #122B33;
  --c-text-700: #334E58;
  --c-text-500: #607984;
  --c-text-300: #92A6AE;
  --c-border: #DCE7EA;
  --c-border-light: #EAF1F3;
  --c-success: #2A9D71;
  --shadow-sm: 0 2px 12px rgba(18,43,51,.06);
  --shadow-md: 0 8px 28px rgba(18,43,51,.09);
  --shadow-lg: 0 20px 48px rgba(17,50,60,.13);
  --radius-sm: 9px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --radius-pill: 999px;
  --container: 1280px;
  --space-section: clamp(64px, 7vw, 88px);
  --transition: .25s ease;
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  background: var(--c-bg);
  color: var(--c-text-700);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
body.no-scroll {
  overflow: hidden;
}
body.nav-open::after {
  content: "";
  position: fixed;
  inset: 0;
  background: rgba(18, 43, 51, .42);
  z-index: 90;
  backdrop-filter: blur(2px);
}
img {
  display: block;
  max-width: 100%;
}
a {
  color: var(--c-primary-600);
  text-decoration: none;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}
a:hover {
  color: var(--c-primary-700);
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 2px dashed var(--c-primary-700);
  outline-offset: 4px;
  border-radius: 4px;
}
button {
  font: inherit;
  background: none;
  border: none;
  cursor: pointer;
  color: inherit;
}
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-inline: clamp(20px, 4vw, 40px);
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--c-border-light);
  transition: box-shadow var(--transition);
}
.site-header.scrolled {
  box-shadow: var(--shadow-sm);
}
.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--c-text-900);
  flex-shrink: 0;
}
.brand-mark {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: linear-gradient(170deg, var(--c-primary), var(--c-primary-700));
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.brand-text {
  font-size: 21px;
  font-weight: 800;
  letter-spacing: .02em;
  color: var(--c-text-900);
}
.brand-sub {
  font-size: 14px;
  font-weight: 600;
  margin-left: 5px;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: var(--c-primary-100);
  color: var(--c-primary-700);
  vertical-align: 3px;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}
.site-nav ul {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 6px;
}
.site-nav ul a {
  display: inline-block;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 500;
  color: var(--c-text-700);
  border: 1px solid transparent;
}
.site-nav ul a:hover {
  color: var(--c-primary-700);
  background: var(--c-primary-100);
}
.site-nav ul a.active {
  color: var(--c-primary-700);
  background: var(--c-primary-100);
  font-weight: 600;
  border-color: rgba(31, 110, 140, .16);
}
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--c-border);
  position: relative;
  background: #fff;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 12px;
  width: 18px;
  height: 2px;
  background: var(--c-text-900);
  border-radius: 4px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle span {
  top: 20px;
}
.nav-toggle span::before {
  top: -6px;
}
.nav-toggle span::after {
  top: 6px;
}
.nav-toggle.open span {
  background: transparent;
}
.nav-toggle.open span::before {
  top: 0;
  transform: rotate(45deg);
}
.nav-toggle.open span::after {
  top: 0;
  transform: rotate(-45deg);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: background var(--transition), box-shadow var(--transition), transform .15s ease, color var(--transition);
  cursor: pointer;
}
.btn:active {
  transform: translateY(1px);
}
.btn-accent {
  background: var(--c-accent);
  color: #fff;
  box-shadow: 0 8px 22px rgba(232, 133, 59, .28);
}
.btn-accent:hover {
  background: var(--c-accent-600);
  color: #fff;
  box-shadow: 0 12px 28px rgba(232, 133, 59, .32);
}
.btn-primary {
  background: linear-gradient(170deg, var(--c-primary), var(--c-primary-600));
  color: #fff;
  box-shadow: 0 8px 22px rgba(31, 110, 140, .24);
}
.btn-primary:hover {
  background: linear-gradient(170deg, var(--c-primary-600), var(--c-primary-700));
  color: #fff;
  box-shadow: 0 12px 28px rgba(31, 110, 140, .3);
}
.btn-ghost {
  background: #fff;
  color: var(--c-primary-700);
  border-color: var(--c-border);
}
.btn-ghost:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
  background: #fff;
}
/* Hero */
.help-hero {
  position: relative;
  background:
    radial-gradient(circle at 78% 20%, rgba(31, 110, 140, .08), transparent 34%),
    linear-gradient(135deg, var(--c-primary-100) 0%, var(--c-bg) 100%);
  padding: clamp(54px, 7vw, 92px) 0;
  overflow: hidden;
}
.help-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("/assets/images/backpic/back-1.webp");
  background-size: cover;
  background-position: center;
  opacity: .05;
  pointer-events: none;
}
.help-hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr .9fr;
  align-items: center;
  gap: clamp(40px, 6vw, 90px);
}
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, .8);
  border: 1px solid rgba(31, 110, 140, .15);
  color: var(--c-primary-700);
  font-size: 14px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 24px;
}
.help-hero h1 {
  font-size: clamp(30px, 4.6vw, 48px);
  line-height: 1.25;
  letter-spacing: .01em;
  color: var(--c-text-900);
  font-weight: 800;
}
.help-hero h1 .text-primary {
  color: var(--c-primary);
}
.help-hero .hero-desc {
  margin-top: 18px;
  font-size: 16px;
  line-height: 1.95;
  color: var(--c-text-500);
  max-width: 600px;
}
.hero-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}
.hero-points {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  margin-top: 34px;
  padding-top: 26px;
  border-top: 1px solid rgba(18, 43, 51, .08);
}
.hero-points li {
  color: var(--c-text-700);
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.hero-points li::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-accent);
}
.hero-media {
  position: relative;
}
.hero-media-card {
  border-radius: 24px;
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, .7);
  aspect-ratio: 4 / 3;
  position: relative;
}
.hero-media-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-media-float {
  position: absolute;
  left: -28px;
  bottom: 22px;
  background: #fff;
  border-radius: 16px;
  padding: 14px 18px;
  box-shadow: var(--shadow-md);
  display: inline-flex;
  gap: 12px;
  align-items: center;
  border: 1px solid var(--c-border-light);
}
.hero-media-float strong {
  display: block;
  color: var(--c-text-900);
  font-size: 15px;
  line-height: 1.4;
}
.hero-media-float span {
  color: var(--c-text-300);
  font-size: 13px;
}
/* Sections */
.section {
  padding: var(--space-section) 0;
}
.section-alt {
  background: var(--c-bg-deep);
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 44px;
}
.section-head h2,
.intro-title {
  font-size: clamp(27px, 3.4vw, 35px);
  line-height: 1.4;
  letter-spacing: .02em;
  color: var(--c-text-900);
  font-weight: 800;
  position: relative;
  padding-left: 18px;
}
.section-head h2::before,
.intro-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: .3em;
  width: 5px;
  height: 1.1em;
  border-radius: 4px;
  background: var(--c-primary);
}
.section-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-primary-700);
  letter-spacing: .08em;
  background: var(--c-primary-100);
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}
.section-head-desc {
  max-width: 520px;
  color: var(--c-text-500);
  line-height: 1.9;
  font-size: 15px;
}
/* Service module */
.module-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}
.help-module {
  background: var(--c-card);
  border: 1px solid var(--c-border-light);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 3vw, 34px);
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  position: relative;
  overflow: hidden;
}
.help-module::after {
  content: "";
  position: absolute;
  right: -40px;
  top: -40px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: var(--c-primary-100);
  opacity: .45;
  pointer-events: none;
}
.help-module:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(31, 110, 140, .18);
}
.module-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(170deg, var(--c-primary), var(--c-primary-600));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  margin-bottom: 22px;
}
.module-icon.orange {
  background: linear-gradient(170deg, var(--c-accent), var(--c-accent-600));
}
.help-module h3 {
  font-size: 21px;
  font-weight: 700;
  color: var(--c-text-900);
  margin-bottom: 10px;
}
.help-module > p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-text-500);
  margin-bottom: 14px;
}
.help-module ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.help-module ul li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: var(--c-bg);
  border-radius: var(--radius-pill);
  font-size: 13px;
  color: var(--c-text-700);
}
.help-module ul li::before {
  content: "";
  width: 5px;
  height: 5px;
  background: var(--c-primary);
  border-radius: 2px;
}
/* split rows */
.split-section {
  padding: var(--space-section) 0;
  overflow: hidden;
}
.split-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 6vw, 80px);
  align-items: center;
}
.split-row + .split-row {
  margin-top: 72px;
}
.split-row.reverse .split-media {
  order: 2;
}
.split-row.reverse .split-body {
  order: 1;
}
.split-media {
  border-radius: 22px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--c-border-light);
  aspect-ratio: 4 / 3;
  background: var(--c-bg-deep);
}
.split-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.split-body h2 {
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1.55;
  color: var(--c-text-900);
  font-weight: 800;
  margin-bottom: 18px;
}
.split-body .lead {
  color: var(--c-text-500);
  line-height: 1.95;
  margin-bottom: 22px;
}
.split-list {
  list-style: none;
}
.split-list li {
  position: relative;
  padding-left: 32px;
  margin-bottom: 14px;
  font-size: 16px;
  color: var(--c-text-700);
  line-height: 1.75;
}
.split-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 18px;
  height: 7px;
  border-left: 4px solid var(--c-accent);
  border-bottom: 4px solid var(--c-accent);
  opacity: .8;
}
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}
.tag {
  display: inline-block;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  background: #fff;
  border: 1px solid var(--c-border);
  font-size: 13px;
  color: var(--c-text-500);
}
/* trust strip */
.trust-band {
  background: var(--c-bg-deep);
  border-top: 1px solid var(--c-border-light);
  border-bottom: 1px solid var(--c-border-light);
}
.trust-band-inner {
  display: flex;
  align-items: center;
  gap: 18px 40px;
  flex-wrap: wrap;
  justify-content: center;
  padding: 22px 0;
  color: var(--c-text-500);
  font-size: 14px;
}
.trust-band-inner strong {
  color: var(--c-primary-700);
  font-weight: 600;
}
.trust-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-accent);
  display: inline-block;
  margin-right: 8px;
}
/* FAQ */
.faq-layout {
  display: grid;
  grid-template-columns: .8fr 1.25fr;
  gap: clamp(32px, 6vw, 76px);
  align-items: start;
}
.faq-intro p {
  color: var(--c-text-500);
  line-height: 1.9;
  font-size: 15px;
  margin: 20px 0 28px;
}
.faq-list {
  display: grid;
  gap: 12px;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--c-border-light);
  border-radius: 16px;
  overflow: hidden;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.faq-item[open] {
  border-color: rgba(31, 110, 140, .3);
  box-shadow: var(--shadow-sm);
}
.faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--c-text-900);
  line-height: 1.6;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-icon {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--c-border);
  color: var(--c-primary);
  transition: transform .25s ease, background .25s ease, color .25s ease;
}
.faq-item[open] .faq-icon {
  transform: rotate(180deg);
  background: var(--c-primary);
  color: #fff;
}
.faq-answer {
  padding: 0 24px 22px;
  color: var(--c-text-500);
  font-size: 15px;
  line-height: 1.8;
}
.faq-answer::before {
  content: "";
  display: block;
  width: 100%;
  height: 1px;
  background: var(--c-border-light);
  margin-bottom: 16px;
}
/* Contact / CTA */
.contact-section {
  padding: var(--space-section) 0;
  background:
    linear-gradient(180deg, rgba(31, 110, 140, .04), rgba(31, 110, 140, .02)),
    var(--c-bg);
}
.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: clamp(32px, 6vw, 70px);
  align-items: start;
}
.contact-card {
  background: #fff;
  border-radius: 22px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--c-border-light);
  padding: clamp(24px, 4vw, 42px);
}
.contact-card h2,
.contact-side h2 {
  font-size: clamp(24px, 3vw, 32px);
  color: var(--c-text-900);
  font-weight: 800;
  line-height: 1.45;
  margin-bottom: 12px;
}
.contact-card > p,
.contact-side > p {
  color: var(--c-text-500);
  margin-bottom: 24px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group {
  margin-bottom: 16px;
}
.form-group.full {
  grid-column: 1 / -1;
}
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-text-700);
  margin-bottom: 7px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  font: inherit;
  color: var(--c-text-900);
  transition: border-color .2s ease, background .2s ease, box-shadow .2s ease;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  background: #fff;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 4px rgba(31, 110, 140, .08);
}
.form-group textarea {
  min-height: 132px;
  resize: vertical;
}
.form-success {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  padding: 12px 16px;
  background: rgba(42, 157, 113, .09);
  border: 1px solid rgba(42, 157, 113, .3);
  color: #227a5a;
  border-radius: var(--radius-sm);
  font-size: 14px;
}
.form-error {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  padding: 12px 16px;
  background: rgba(214, 69, 69, .08);
  border: 1px solid rgba(214, 69, 69, .28);
  color: #a53d3d;
  border-radius: var(--radius-sm);
  font-size: 14px;
}
.contact-side .support-list {
  list-style: none;
  margin-top: 28px;
}
.contact-side .support-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--c-border);
}
.contact-side .support-list li:last-child {
  border-bottom: none;
}
.support-icon {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--c-primary-100);
  color: var(--c-primary);
}
.support-item strong {
  display: block;
  color: var(--c-text-900);
  font-size: 15px;
  line-height: 1.5;
}
.support-item span {
  font-size: 14px;
  color: var(--c-text-500);
}
.contact-cta {
  margin-top: 26px;
  padding: 18px 22px;
  border-radius: 16px;
  background: var(--c-primary-100);
}
.contact-cta p {
  font-size: 13px;
  color: var(--c-text-700);
  margin-bottom: 12px;
}
/* Bottom CTA */
.bottom-cta {
  background: var(--c-text-900);
  border-radius: 24px;
  padding: clamp(34px, 5vw, 52px);
  margin: var(--space-section) 0;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  position: relative;
  overflow: hidden;
}
.bottom-cta::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -80px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 44px solid rgba(255, 255, 255, .05);
}
.bottom-cta h2 {
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1.5;
  margin-bottom: 8px;
}
.bottom-cta p {
  color: rgba(255, 255, 255, .68);
  max-width: 560px;
  font-size: 15px;
}
.bottom-cta .btn {
  position: relative;
  z-index: 2;
  flex-shrink: 0;
}
/* Footer */
.site-footer {
  background: var(--c-text-900);
  color: rgba(255, 255, 255, .78);
  padding-top: 60px;
}
.site-footer .brand {
  color: #fff;
}
.footer-main {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.1fr 1.2fr;
  gap: 40px;
  padding-bottom: 42px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.footer-brand .brand-mark {
  background: rgba(255, 255, 255, .12);
  color: #fff;
}
.footer-brand-desc {
  margin-top: 18px;
  font-size: 14px;
  line-height: 1.9;
  color: rgba(255, 255, 255, .66);
  max-width: 380px;
}
.footer-title {
  color: #fff;
  font-weight: 600;
  font-size: 16px;
  margin-bottom: 18px;
}
.footer-links {
  list-style: none;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  color: rgba(255, 255, 255, .72);
  font-size: 14px;
}
.footer-links a:hover {
  color: #fff;
}
.footer-contact p {
  margin-bottom: 6px;
  font-size: 14px;
}
.footer-service-time {
  margin-top: 16px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, .05);
  border-radius: 10px;
  color: rgba(255, 255, 255, .56);
  font-size: 13px;
  line-height: 1.7;
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 22px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, .5);
}
.footer-bottom a {
  color: rgba(255, 255, 255, .7);
}
.footer-bottom a:hover {
  color: #fff;
}
/* Responsive */
@media (max-width: 1080px) {
  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }
  .split-row {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .split-row.reverse .split-media {
    order: 0;
  }
  .split-row.reverse .split-body {
    order: 1;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .faq-layout {
    grid-template-columns: 1fr;
  }
  .footer-main {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 1023px) {
  .nav-toggle {
    display: block;
    z-index: 110;
  }
  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    width: min(80%, 340px);
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 28px;
    padding: 100px 28px 40px;
    transform: translateX(103%);
    transition: transform .32s ease;
    box-shadow: -12px 0 38px rgba(18, 43, 51, .1);
    overflow-y: auto;
    z-index: 105;
  }
  .site-nav.open {
    transform: translateX(0);
  }
  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 8px;
  }
  .site-nav ul a {
    display: block;
    font-size: 17px;
  }
  .site-nav .btn {
    width: 100%;
  }
}
@media (max-width: 768px) {
  .header-inner {
    min-height: 68px;
  }
  .brand-mark {
    width: 36px;
    height: 36px;
  }
  .brand-text {
    font-size: 19px;
  }
  .brand-sub {
    font-size: 12px;
  }
  .help-hero-inner {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .hero-media-float {
    left: 12px;
    bottom: 12px;
  }
  .help-hero h1 {
    font-size: 30px;
  }
  .section-head h2,
  .intro-title {
    font-size: 26px;
  }
  .module-grid {
    grid-template-columns: 1fr;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .bottom-cta {
    flex-direction: column;
    text-align: center;
  }
  .bottom-cta .btn {
    width: 100%;
  }
  .footer-main {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}
@media (max-width: 480px) {
  .hero-btns {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-btns .btn {
    width: 100%;
  }
  .brand-sub {
    display: none;
  }
  .btn {
    padding: 11px 20px;
  }
  .contact-card {
    padding: 22px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}