/* roulang page: index */
:root {
  --primary: #1A5C8C;
  --primary-deep: #103A57;
  --primary-rgb: 26, 92, 140;
  --soft: #F3F7FB;
  --accent: #EF7522;
  --text-main: #1F3346;
  --text-sub: #5B6E7C;
  --border: #DCE7EF;
  --white: #FFFFFF;
  --off-white: #F7FAFC;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 10px 30px rgba(16, 58, 87, 0.10);
  --shadow-deep: 0 18px 42px rgba(16, 58, 87, 0.16);
  --shadow-focus: 0 0 0 4px rgba(26, 92, 140, 0.14);
  --space: 92px;
  --space-mobile: 52px;
  --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
}
*, *::before, *::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-main);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
  border: 0;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color .2s, background .2s, box-shadow .2s, border-color .2s, opacity .2s, transform .2s;
}
a:hover, a:focus {
  outline: none;
}
button, input {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}
input {
  outline: none;
}
h1, h2, h3, h4, h5, p, ul, ol, figure {
  margin: 0;
  padding: 0;
}
ul, ol {
  list-style: none;
}
.container {
  max-width: 1216px;
  margin: 0 auto;
  padding: 0 24px;
}
.grid-container {
  max-width: 1216px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  line-height: 1.4;
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .22s ease;
  text-align: center;
}
.btn:focus-visible {
  box-shadow: var(--shadow-focus);
}
.btn-accent {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 8px 20px rgba(239, 117, 34, 0.24);
}
.btn-accent:hover {
  background: #E06012;
  border-color: #E06012;
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(239, 117, 34, 0.3);
}
.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-deep);
  border-color: var(--primary-deep);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(16, 58, 87, 0.20);
}
.btn-outline {
  background: #fff;
  border-color: #C8D8E5;
  color: var(--primary-deep);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--soft);
}
.btn-light {
  background: #fff;
  color: var(--primary-deep);
  border-color: #fff;
}
.btn-light:hover {
  background: var(--soft);
  border-color: var(--soft);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(0,0,0,.12);
}
.btn-sm {
  min-height: 38px;
  padding: 6px 18px;
  font-size: 14px;
}

/* ===== Tags / Badges ===== */
.tag {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 3px 11px;
  border-radius: 30px;
  background: rgba(26, 92, 140, 0.08);
  border: 1px solid rgba(26, 92, 140, 0.12);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.3;
}
.tag-orange {
  background: rgba(239, 117, 34, 0.1);
  border-color: rgba(239, 117, 34, 0.18);
  color: #D75D0C;
}

/* ===== Header ===== */
.site-header {
  background: var(--white);
  position: relative;
  z-index: 120;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 rgba(16,58,87,.02), 0 8px 24px rgba(16,58,87,.03);
}
.header-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 0;
}
.brand-block {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.brand-logo {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: .2px;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.brand-name {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary-deep);
  white-space: nowrap;
  letter-spacing: .3px;
}
.brand-sub {
  font-size: 11px;
  color: var(--text-sub);
  letter-spacing: 1px;
  white-space: nowrap;
  font-weight: 500;
}
.header-search-col {
  flex: 1;
  max-width: 660px;
  margin-left: auto;
  margin-right: auto;
}
.search-form {
  display: flex;
  align-items: center;
  background: var(--white);
  border: 1px solid #C8D8E5;
  border-radius: 46px;
  height: 46px;
  padding: 0 6px 0 0;
  transition: border-color .22s, box-shadow .22s;
}
.search-form:focus-within {
  border-color: var(--primary);
  box-shadow: var(--shadow-focus);
}
.search-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--text-sub);
  flex: 0 0 auto;
}
.search-input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
  height: 100%;
  padding: 0 10px 0 0;
  font-size: 15px;
  color: var(--text-main);
}
.search-input::placeholder {
  color: #90A0AC;
}
.search-submit {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-width: 86px;
  height: 38px;
  border: 0;
  background: var(--soft);
  color: var(--primary);
  border-radius: 30px;
  padding: 0 18px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: background .2s, color .2s;
}
.search-submit:hover {
  background: rgba(26, 92, 140, 0.14);
  color: var(--primary-deep);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.header-live {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  background: rgba(239, 117, 34, .08);
  border: 1px solid rgba(239, 117, 34, .18);
  color: #D75D0C;
  border-radius: 30px;
  padding: 6px 18px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  transition: all .2s;
}
.header-live:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.nav-holder {
  background: var(--white);
  border-top: 1px solid #EEF3F7;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
}
.nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex-wrap: wrap;
  padding: 6px 0;
}
.nav-list > li > a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 4px 20px;
  border-radius: 30px;
  color: var(--text-sub);
  font-size: 15px;
  font-weight: 500;
  transition: all .2s;
}
.nav-list > li > a:hover {
  color: var(--primary);
  background: rgba(26,92,140,.07);
}
.nav-list > li.active > a {
  color: var(--primary);
  background: rgba(26,92,140,.1);
  font-weight: 600;
}
.nav-toggle {
  display: none;
  border: 0;
  background: var(--soft);
  color: var(--primary-deep);
  width: 40px;
  height: 40px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 20px;
}

/* ===== Hero ===== */
.hero {
  background: #EAEFF5 url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(243,247,251,.98) 4%, rgba(243,247,251,.94) 42%, rgba(240,245,249,.78) 100%);
  z-index: 1;
}
.hero-inner {
  position: relative;
  z-index: 2;
  padding-top: 72px;
  padding-bottom: 96px;
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  gap: 54px;
  align-items: center;
}
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 1.6px;
  text-transform: uppercase;
}
.hero-kicker::before {
  content: '';
  width: 28px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.hero h1 {
  margin-top: 20px;
  font-size: clamp(36px, 5.1vw, 58px);
  color: var(--primary-deep);
  line-height: 1.18;
  font-weight: 800;
  letter-spacing: -.6px;
}
.hero-title-word {
  color: var(--primary);
  display: inline-block;
}
.hero-lead {
  margin-top: 22px;
  font-size: 17px;
  line-height: 1.85;
  color: #3D5366;
  max-width: 620px;
}
.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}
.hero-stats {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  background: rgba(255,255,255,.7);
  border: 1px solid rgba(220,231,239,.8);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
  max-width: 600px;
}
.hero-stat-item {
  padding: 16px 16px 14px;
  border-left: 1px solid #E1EBF2;
  background: rgba(255,255,255,.5);
}
.hero-stat-item:first-child {
  border-left: 0;
}
.hero-stat-item strong {
  display: block;
  color: var(--primary-deep);
  font-size: 18px;
  font-weight: 800;
  line-height: 1.3;
}
.hero-stat-item span {
  font-size: 12px;
  color: var(--text-sub);
  line-height: 1.4;
}
.hero-visual {
  position: relative;
}
.hero-visual img {
  width: 100%;
  border-radius: 22px;
  box-shadow: 0 28px 70px rgba(16,58,87,.2);
  object-fit: cover;
}
.hero-float-card {
  position: absolute;
  left: 18px;
  bottom: 20px;
  background: rgba(255,255,255,.94);
  border: 1px solid #E4EDF5;
  border-radius: 14px;
  box-shadow: var(--shadow-deep);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 260px;
}
.hero-float-dot {
  display: inline-flex;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(26,92,140,.09);
  color: var(--primary);
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex: 0 0 auto;
}
.hero-float-card strong {
  display: block;
  color: var(--primary-deep);
  font-size: 13px;
  line-height: 1.4;
}
.hero-float-card span {
  color: var(--text-sub);
  font-size: 12px;
  line-height: 1.4;
}

/* ===== Section Base ===== */
.section {
  padding: var(--space) 0;
}
.section-soft {
  background: var(--soft);
}
.section-white {
  background: var(--white);
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 42px;
}
.section-head-centered {
  display: block;
  text-align: center;
  margin-bottom: 42px;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  background: rgba(26,92,140,.08);
  border: 1px solid rgba(26,92,140,.1);
  color: var(--primary);
  border-radius: 30px;
  padding: 3px 16px;
  font-size: 13px;
  font-weight: 600;
}
.section-head h2,
.section-head-centered h2 {
  font-size: clamp(28px, 3.5vw, 36px);
  line-height: 1.3;
  font-weight: 800;
  color: var(--primary-deep);
  margin-top: 12px;
  letter-spacing: -.4px;
}
.section-desc {
  max-width: 560px;
  color: var(--text-sub);
  line-height: 1.8;
}
.section-head-centered .section-desc {
  max-width: 720px;
  margin: 14px auto 0;
}

/* ===== News / CMS section ===== */
.news-section {
  background: var(--white);
}
.news-head-side {
  max-width: 360px;
  text-align: left;
}
.news-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: 24px;
  align-items: stretch;
}
.news-layout.has-side {
  display: grid;
}
.feature-post {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform .3s, box-shadow .3s;
  display: flex;
  flex-direction: column;
  min-height: 100%;
}
.feature-post:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-deep);
}
.feature-cover {
  overflow: hidden;
  background: var(--soft);
}
.feature-cover img {
  width: 100%;
  aspect-ratio: 16 / 8.6;
  object-fit: cover;
}
.feature-body {
  padding: 26px 26px 28px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.feat-topline, .normal-topline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-sub);
}
.post-date {
  color: var(--text-sub);
  font-size: 13px;
}
.feature-title {
  font-size: 24px;
  line-height: 1.45;
  color: var(--primary-deep);
  margin-top: 12px;
}
.feature-title a {
  background-image: linear-gradient(to right, var(--primary), var(--primary));
  background-repeat: no-repeat;
  background-size: 0 2px;
  background-position: left bottom;
  transition: background-size .3s;
}
.feature-title a:hover {
  background-size: 100% 2px;
  color: var(--primary);
}
.feature-excerpt {
  margin-top: 14px;
  color: #42586A;
  line-height: 1.85;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}
.read-more {
  margin-top: auto;
  padding-top: 22px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--primary);
  font-size: 15px;
  font-weight: 600;
}
.read-more span {
  transition: transform .2s;
}
.read-more:hover {
  color: var(--accent);
}
.read-more:hover span {
  transform: translateX(5px);
}
.side-posts {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 14px;
}
.side-post {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  box-shadow: 0 5px 16px rgba(16,58,87,.04);
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.side-post:hover {
  transform: translateY(-3px);
  border-color: #C3D7E7;
  box-shadow: var(--shadow);
}
.side-post-thumb {
  display: block;
  width: 110px;
  min-width: 110px;
  height: 76px;
  border-radius: 10px;
  overflow: hidden;
  background: var(--soft);
}
.side-post-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.side-post-content {
  min-width: 0;
  flex: 1;
}
.side-topline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.side-post-title {
  margin-top: 8px;
  font-size: 16px;
  line-height: 1.55;
  font-weight: 700;
  color: var(--primary-deep);
}
.side-post-title a:hover {
  color: var(--primary);
}
.side-post-excerpt {
  margin-top: 6px;
  color: var(--text-sub);
  font-size: 13px;
  line-height: 1.7;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
}
.side-post-more {
  display: inline-block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--primary);
}
.empty-state {
  background: var(--soft);
  border: 1px dashed #C9D9E6;
  border-radius: var(--radius);
  padding: 70px 24px;
  text-align: center;
  color: var(--text-sub);
}
.empty-state-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 18px;
  background: rgba(26,92,140,.06);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #90A8B8;
}
.empty-state strong {
  display: block;
  font-size: 18px;
  color: #4A6274;
  margin-bottom: 6px;
}
.empty-state p {
  font-size: 15px;
}

/* ===== Feature Cards ===== */
.features-section {
  background: var(--soft);
}
.feature-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  align-items: stretch;
}
.feature-card {
  border-radius: var(--radius);
  padding: 30px 28px 32px;
  background: var(--white);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: transform .3s, box-shadow .3s;
  display: flex;
  flex-direction: column;
  min-height: 100%;
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 22px 46px rgba(16,58,87,.15);
}
.feature-card.is-blue {
  background: #EAF2F9;
  border-color: transparent;
  transform: translateY(10px);
}
.feature-card.is-blue:hover {
  transform: translateY(5px);
}
.feature-card.is-white {
  box-shadow: 0 14px 34px rgba(16,58,87,.11);
}
.feature-card.is-marked {
  position: relative;
  background: #fff;
  border-top: 3px solid var(--accent);
  transform: translateY(-10px);
}
.feature-card.is-marked:hover {
  transform: translateY(-16px);
}
.feature-card-index {
  font-size: 15px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 2px;
}
.feature-card-icon {
  margin-top: 18px;
  width: 42px;
  height: 42px;
  background: rgba(26,92,140,.08);
  color: var(--primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.feature-card h3 {
  font-size: 20px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--primary-deep);
  margin-top: 18px;
}
.feature-card p {
  margin-top: 12px;
  color: #42586A;
  line-height: 1.8;
}

/* ===== How-to / Demo ===== */
.howto-section {
  background: var(--white);
  padding-top: 80px;
  padding-bottom: 110px;
}
.demo-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 58px;
  align-items: center;
  margin-bottom: 74px;
}
.demo-item:last-child {
  margin-bottom: 0;
}
.demo-visual {
  position: relative;
}
.demo-frame {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: 0 20px 52px rgba(16,58,87,.14);
  overflow: hidden;
}
.demo-frame-head {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 16px;
  background: #F6F9FC;
  border-bottom: 1px solid #E7EEF4;
}
.demo-frame-head i {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #D8E2EB;
}
.demo-frame-head i:first-child { background: #F3A97A; }
.demo-frame-head i:nth-child(2) { background: #F6CE8B; }
.demo-frame-body {
  padding: 18px;
}
.demo-search-row {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 42px;
  background: var(--soft);
  border-radius: 30px;
  padding: 0 14px;
  color: #607B8F;
  font-size: 13px;
}
.demo-search-row svg {
  color: #9AADBB;
}
.demo-search-row b {
  padding: 2px 12px;
  background: #fff;
  border-radius: 30px;
  font-weight: 600;
  color: var(--primary);
  font-size: 12px;
  margin-left: auto;
}
.demo-lines {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.demo-line {
  height: 9px;
  border-radius: 20px;
  background: #EDF3F8;
}
.demo-line.short { width: 62%; }
.demo-line.mid { width: 84%; background: #E2ECF3; }
.demo-suggests {
  margin-top: 14px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.demo-suggest {
  font-size: 12px;
  padding: 3px 12px;
  background: rgba(26,92,140,.06);
  color: var(--primary);
  border-radius: 20px;
}
.demo-copy h3 {
  font-size: 26px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--primary-deep);
}
.demo-copy p {
  margin-top: 14px;
  color: #42586A;
  line-height: 1.9;
}
.check-list {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: #42586A;
  line-height: 1.7;
}
.check-list li::before {
  content: '';
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 3px;
  border-radius: 50%;
  background: rgba(26,92,140,.08);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 16 16' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M4 8.5L6.5 11L12 5' stroke='%231A5C8C' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-size: 12px;
  background-position: center;
  background-repeat: no-repeat;
}
.chart-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 22px;
}
.chart-card-title {
  font-size: 14px;
  color: var(--text-sub);
}
.step-visual {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 18px;
}
.step-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 10px;
  border-radius: 11px;
  background: #F8FBFD;
}
.step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
}
.step-line {
  height: 7px;
  border-radius: 20px;
  background: #E2EDF4;
  flex: 1;
  margin-top: 10px;
}

/* ===== Channel Cards ===== */
.channels-section {
  background: var(--soft);
}
.channel-card {
  display: block;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(16,58,87,.05);
  transition: transform .3s, box-shadow .3s;
  height: 100%;
}
.channel-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-deep);
}
.channel-card-cover {
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--soft);
}
.channel-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s;
}
.channel-card:hover .channel-card-cover img {
  transform: scale(1.05);
}
.channel-card-body {
  padding: 26px;
}
.channel-card-body h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary-deep);
  margin-top: 14px;
}
.channel-card-body p {
  margin-top: 10px;
  color: var(--text-sub);
  font-size: 15px;
  line-height: 1.8;
}
.channel-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  font-weight: 600;
  font-size: 15px;
  color: var(--primary);
}
.channel-link span {
  transition: transform .2s;
}
.channel-card:hover .channel-link {
  color: var(--accent);
}
.channel-card:hover .channel-link span {
  transform: translateX(5px);
}

/* ===== Data band ===== */
.data-band {
  background: var(--primary-deep);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.data-band::after {
  content: '';
  position: absolute;
  width: 420px;
  height: 420px;
  right: -120px;
  bottom: -200px;
  border-radius: 50%;
  background: rgba(255,255,255,.04);
}
.data-band .container {
  position: relative;
  z-index: 2;
}
.band-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 64px;
  align-items: center;
}
.data-band h2 {
  color: #fff;
  font-size: clamp(27px, 3vw, 36px);
  font-weight: 800;
  line-height: 1.35;
}
.data-band h2 em {
  font-style: normal;
  color: #F7C7A6;
}
.data-band-lead {
  margin-top: 18px;
  color: #C4D6E4;
  line-height: 1.9;
}
.band-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}
.band-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  background: rgba(255,255,255,.07);
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.08);
  font-size: 14px;
  font-weight: 600;
  color: #E1EDF5;
}
.band-icon {
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: rgba(255,255,255,.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #7DB2D2;
}
.band-grand-number {
  display: flex;
  flex-direction: column;
}
.band-grand-number strong {
  font-size: 40px;
  font-weight: 800;
  color: #fff;
  line-height: 1.1;
}
.band-grand-number span {
  color: #91B2C6;
  font-size: 14px;
  margin-top: 8px;
}
.band-metrics {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.metric-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 16px;
  padding: 22px 24px;
  backdrop-filter: none;
}
.metric-card strong {
  display: block;
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  line-height: 1.4;
}
.metric-card span {
  color: #B9CFDD;
  font-size: 14px;
  line-height: 1.75;
  display: block;
  margin-top: 6px;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--white);
}
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  background: #FBFDFE;
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: box-shadow .25s;
}
.faq-item[open] {
  box-shadow: var(--shadow);
  background: #fff;
}
.faq-item summary {
  display: flex;
  align-items: center;
  gap: 14px;
  list-style: none;
  padding: 20px 24px;
  cursor: pointer;
  user-select: none;
  color: var(--primary-deep);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary:hover {
  background: var(--soft);
}
.faq-index {
  width: 28px;
  height: 28px;
  flex: 0 0 auto;
  background: rgba(26,92,140,.08);
  color: var(--primary);
  border-radius: 8px;
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.faq-icon {
  margin-left: auto;
  width: 24px;
  height: 24px;
  flex: 0 0 auto;
  color: var(--primary);
  font-size: 20px;
  line-height: 1;
  text-align: center;
  transition: transform .25s;
}
.faq-item[open] .faq-icon {
  transform: rotate(45deg);
}
.faq-body {
  padding: 0 24px 24px 66px;
  color: #42586A;
  line-height: 1.9;
}

/* ===== CTA ===== */
.cta-section {
  background: var(--soft);
}
.cta-panel {
  background: var(--white);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: 24px;
  padding: 52px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-panel h2 {
  font-size: clamp(24px, 2.8vw, 32px);
  line-height: 1.4;
  font-weight: 800;
  color: var(--primary-deep);
}
.cta-panel p {
  margin-top: 14px;
  color: var(--text-sub);
  line-height: 1.8;
}
.cta-panel-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  flex-shrink: 0;
}

/* ===== Fixed CTA ===== */
.fix-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 90;
  background: rgba(16,58,87,.95);
  color: #fff;
  border-top: 1px solid rgba(255,255,255,.12);
  box-shadow: 0 -8px 30px rgba(16,58,87,.22);
  transform: translateY(0);
  transition: transform .35s ease, opacity .35s ease;
  opacity: 1;
}
.fix-cta.is-hidden {
  transform: translateY(110%);
  opacity: 0;
  pointer-events: none;
}
.fix-cta-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  min-height: 58px;
  padding: 7px 20px;
  flex-wrap: wrap;
}
.fix-cta p {
  font-size: 14px;
  color: #E1EDF5;
  display: flex;
  align-items: center;
  gap: 9px;
}
.fix-cta p strong {
  color: #fff;
  font-weight: 700;
}
.fix-cta .btn {
  min-height: 34px;
  padding: 5px 16px;
  font-size: 13px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-deep);
  color: #C8D8E4;
  padding: 74px 0 0;
}
.site-footer a {
  color: #C8D8E4;
}
.site-footer a:hover {
  color: #fff;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.footer-logo {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: rgba(255,255,255,.12);
  color: #fff;
  font-size: 15px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}
.footer-brand-name {
  font-size: 19px;
  font-weight: 800;
  color: #fff;
}
.footer-brand-sub {
  font-size: 12px;
  color: #89AEC4;
}
.footer-about-text {
  margin-top: 18px;
  line-height: 1.9;
  color: #A8C2D2;
  font-size: 14px;
  max-width: 330px;
}
.footer-heading {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .5px;
  margin-bottom: 20px;
}
.footer-links li {
  margin-bottom: 11px;
}
.footer-links a {
  font-size: 14px;
  color: #A8C2D2;
  transition: color .2s, padding-left .2s;
}
.footer-links a:hover {
  color: #fff;
  padding-left: 3px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  margin-top: 60px;
  padding: 24px 0;
  font-size: 13px;
  color: #88A6BA;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-bottom span + span::before {
  content: '·';
  margin-right: 10px;
  color: #5D829A;
}

/* ===== Responsive ===== */
@media screen and (max-width: 1024px) {
  .header-main {
    flex-wrap: wrap;
  }
  .header-search-col {
    order: 3;
    max-width: 100%;
    flex: 0 0 100%;
  }
  .hero-grid {
    gap: 34px;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-stat-item:nth-child(2) {
    border-left: 0;
  }
  .hero-stat-item:nth-child(3) {
    border-left: 1px solid #E1EBF2;
  }
  .hero-stat-item:nth-child(4) {
    border-left: 0;
  }
  .feature-card-grid {
    grid-template-columns: repeat(2, minmax(0,1fr));
  }
  .feature-card.is-marked {
    transform: none;
  }
  .feature-card.is-marked:hover {
    transform: translateY(-5px);
  }
  .feature-card.is-blue {
    transform: none;
  }
  .demo-item {
    gap: 36px;
  }
  .band-grid {
    grid-template-columns: 1fr;
    gap: 38px;
  }
  .cta-panel {
    padding: 38px 30px;
  }
}
@media screen and (max-width: 768px) {
  :root {
    --space: 58px;
  }
  .header-main {
    gap: 12px;
  }
  .header-actions .header-live {
    display: none;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .nav-inner {
    justify-content: flex-start;
    position: relative;
  }
  .nav-list {
    display: none;
    width: 100%;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 0 0 16px 16px;
    box-shadow: var(--shadow);
    padding: 14px;
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 120;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }
  .nav-list.is-open {
    display: flex;
  }
  .nav-list > li > a {
    display: flex;
    width: 100%;
    min-height: 42px;
  }
  .hero-inner {
    padding-top: 44px;
    padding-bottom: 60px;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero h1 {
    font-size: 33px;
  }
  .hero-visual {
    order: -1;
  }
  .section-head {
    display: block;
  }
  .section-head .section-desc {
    margin-top: 12px;
  }
  .news-layout,
  .news-layout.has-side {
    grid-template-columns: 1fr;
  }
  .side-post-thumb {
    width: 92px;
    min-width: 92px;
    height: 74px;
  }
  .feature-card-grid {
    grid-template-columns: 1fr;
  }
  .demo-item {
    grid-template-columns: 1fr;
    gap: 34px;
    margin-bottom: 50px;
  }
  .demo-item.reverse .demo-visual {
    order: 1;
  }
  .band-list {
    grid-template-columns: 1fr;
  }
  .faq-body {
    padding-left: 24px;
  }
  .fix-cta p span {
    display: none;
  }
  .fix-cta p {
    font-size: 13px;
  }
  .fix-cta-inner {
    gap: 12px;
    min-height: 50px;
  }
}
@media screen and (max-width: 560px) {
  .container {
    padding: 0 16px;
  }
  .brand-name {
    font-size: 18px;
  }
  .brand-logo {
    width: 38px;
    height: 38px;
  }
  .brand-sub {
    font-size: 10px;
  }
  .hero h1 {
    font-size: 30px;
  }
  .hero-actions .btn {
    width: calc(50% - 7px);
    max-width: 100%;
  }
  .hero-actions .btn-text {
    width: calc(50% - 7px);
  }
  .hero-stats {
    grid-template-columns: 1fr 1fr;
  }
  .hero-stat-item {
    padding: 12px;
  }
  .hero-stat-item strong {
    font-size: 16px;
  }
  .side-post {
    flex-direction: column;
  }
  .side-post-thumb {
    width: 100%;
    height: 100px;
  }
  .cta-panel {
    padding: 30px 20px;
  }
  .cta-panel-actions .btn {
    width: calc(50% - 6px);
  }
  .cta-panel-actions {
    width: 100%;
  }
  .fix-cta p {
    font-size: 12px;
  }
  .feature-card {
    padding: 24px 20px;
  }
}

/* roulang page: category1 */
:root {
            --primary: #1A5C8C;
            --primary-deep: #103A57;
            --primary-light: #F3F7FB;
            --accent: #EF7522;
            --text-main: #1F3346;
            --text-secondary: #5B6E7C;
            --border-color: #DCE7EF;
            --bg-light: #F7FAFD;
            --card-border: #E5EEF6;
            --shadow-card: 0 10px 30px rgba(16, 58, 87, 0.10);
            --shadow-hover: 0 18px 40px rgba(16, 58, 87, 0.16);
            --radius: 14px;
            --radius-btn: 8px;
            --transition: all 0.25s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-main);
            background: var(--primary-light);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            display: inline-block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--primary);
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        .grid-x {
            margin-left: 0;
            margin-right: 0;
        }

        /* ========== Typography ========== */
        .section-heading {
            font-size: 31px;
            font-weight: 700;
            line-height: 1.4;
            letter-spacing: 0.5px;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .section-subheading {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 760px;
        }
        .h2-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.45;
            color: var(--text-main);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }
        .h3-title {
            font-size: 19px;
            font-weight: 600;
            line-height: 1.55;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        /* ========== Buttons ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            line-height: 1.4;
            border: 2px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #ffffff;
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: #0f4e78;
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26, 92, 140, 0.30);
        }
        .btn-accent {
            background: var(--accent);
            color: #ffffff;
        }
        .btn-accent:hover,
        .btn-accent:focus {
            background: #dd6413;
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(239, 117, 34, 0.35);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover,
        .btn-outline:focus {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 18px rgba(26, 92, 140, 0.20);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
            border-radius: 6px;
        }
        .btn-block {
            display: flex;
            width: 100%;
        }

        /* ========== Header ========== */
        .site-header {
            background: #ffffff;
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 4px 20px rgba(16, 58, 87, 0.04);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0;
            gap: 32px;
            flex-wrap: wrap;
        }
        .brand-block {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .brand-logo,
        .footer-logo {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 20px;
            letter-spacing: 0.5px;
            line-height: 1;
            flex-shrink: 0;
        }
        .brand-text {
            display: flex;
            flex-direction: column;
        }
        .brand-name {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.3px;
            color: var(--text-main);
            line-height: 1.3;
        }
        .brand-sub {
            font-size: 13px;
            color: var(--text-secondary);
            letter-spacing: 0.5px;
            line-height: 1.4;
            margin-top: 2px;
        }
        .header-search-col {
            flex: 1;
            max-width: 720px;
            min-width: 280px;
        }
        .search-form {
            display: flex;
            align-items: center;
            background: var(--primary-light);
            border: 2px solid var(--border-color);
            border-radius: 999px;
            padding: 4px 4px 4px 22px;
            height: 50px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        .search-form:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(26, 92, 140, 0.12);
            background: #fff;
        }
        .search-icon {
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            margin-right: 8px;
        }
        .search-input {
            flex: 1;
            border: none;
            background: transparent;
            font-size: 16px;
            outline: none;
            min-width: 0;
            color: var(--text-main);
            height: 38px;
            line-height: 38px;
        }
        .search-input::placeholder {
            color: #8DA2B0;
        }
        .search-submit {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            border: none;
            border-radius: 999px;
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            padding: 9px 24px;
            cursor: pointer;
            transition: var(--transition);
            height: 40px;
            flex-shrink: 0;
        }
        .search-submit:hover {
            background: #0f4e78;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .header-live {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            background: #FFF4EA;
            color: var(--accent);
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
        }
        .header-live span {
            font-size: 10px;
        }

        /* Nav Bar */
        .nav-holder {
            background: white;
            border-top: 1px solid var(--border-color);
        }
        .nav-inner {
            display: flex;
            align-items: center;
        }
        .nav-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--text-main);
            cursor: pointer;
            padding: 10px 4px;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 8px;
            flex: 1;
            flex-wrap: wrap;
            margin-bottom: 0;
        }
        .nav-list li {
            margin-bottom: 0;
        }
        .nav-list li a {
            display: inline-block;
            padding: 14px 20px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-main);
            border-bottom: 3px solid transparent;
            transition: var(--transition);
            text-decoration: none;
            margin-bottom: -1px;
            line-height: 1.4;
        }
        .nav-list li a:hover {
            color: var(--primary);
            background: rgba(26, 92, 140, 0.04);
        }
        .nav-list li.active a {
            color: var(--primary);
            font-weight: 600;
            border-bottom-color: var(--primary);
        }

        /* ========== Category Hero (small) ========== */
        .cat-hero {
            background: var(--primary-light);
            padding: 58px 0 50px;
            border-bottom: 1px solid var(--border-color);
        }
        .cat-hero .container {
            display: block;
            max-width: 1100px;
        }
        .cat-hero .cat-hero-inner {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
        }
        .cat-hero h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--primary-deep);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }
        .cat-hero .hero-desc {
            font-size: 18px;
            color: var(--text-secondary);
            line-height: 1.85;
            max-width: 650px;
        }
        .cat-hero-side {
            min-width: 280px;
            flex-shrink: 0;
            background: #ffffff;
            border-radius: var(--radius);
            border: 1px solid var(--card-border);
            box-shadow: var(--shadow-card);
            padding: 22px 26px;
        }
        .cat-hero-side .side-label {
            font-size: 13px;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--text-secondary);
            font-weight: 600;
            margin-bottom: 10px;
        }
        .cat-hero-side .side-big-num {
            font-size: 34px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }
        .cat-hero-side .side-note {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 6px;
            line-height: 1.5;
        }

        /* ========== Section spacing ========== */
        .section-pad {
            padding: 76px 0;
        }
        .section-pad-sm {
            padding: 52px 0;
        }
        .section-alt {
            background: #ffffff;
        }

        /* ========== Shortcut index block ========== */
        .shortcut-wrap {
            max-width: 1100px;
            margin: 0 auto;
        }
        .idx-grid-head {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }
        .idx-labels {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 14px;
        }
        .idx-labels span {
            font-size: 13px;
            background: #fff;
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            border-radius: 999px;
            padding: 5px 14px;
            line-height: 1.5;
        }
        .content-split {
            display: grid;
            grid-template-columns: 300px 1fr;
            gap: 44px;
            align-items: start;
        }
        .index-panel {
            background: #ffffff;
            border-radius: var(--radius);
            border: 1px solid var(--card-border);
            box-shadow: 0 6px 18px rgba(16, 58, 87, 0.05);
            padding: 30px 26px;
            position: sticky;
            top: 150px;
        }
        .index-panel-title {
            font-size: 17px;
            font-weight: 700;
            padding-bottom: 14px;
            margin-bottom: 16px;
            border-bottom: 1px solid var(--border-color);
            color: var(--primary-deep);
        }
        .index-list {
            display: block;
        }
        .index-list li {
            margin-bottom: 2px;
        }
        .index-list a {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            padding: 10px 12px;
            border-radius: 8px;
            font-size: 15px;
            color: var(--text-main);
            transition: var(--transition);
        }
        .index-list a:hover {
            background: var(--primary-light);
            color: var(--primary);
            padding-left: 16px;
        }
        .index-list a .idx-num {
            flex-shrink: 0;
            color: var(--accent);
            font-size: 13px;
            font-weight: 700;
            width: 20px;
            margin-top: 2px;
        }
        .results-panel .result-item {
            margin-bottom: 30px;
            background: #ffffff;
            border-radius: var(--radius);
            border: 1px solid var(--card-border);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            display: flex;
            transition: var(--transition);
        }
        .results-panel .result-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .result-thumb {
            flex: 0 0 280px;
            overflow: hidden;
            position: relative;
            background: var(--primary-light);
        }
        .result-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
            display: block;
        }
        .result-item:hover .result-thumb img {
            transform: scale(1.04);
        }
        .result-body {
            padding: 28px 30px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .result-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px 14px;
            margin-bottom: 10px;
        }
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary);
        }
        .badge-orange {
            background: #FFF1E6;
            color: var(--accent);
        }
        .badge-green {
            background: #E9F5EE;
            color: #2C7B4A;
        }
        .result-date {
            font-size: 14px;
            color: var(--text-secondary);
        }
        .result-title {
            font-size: 21px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.5;
            margin-bottom: 8px;
        }
        .result-title a {
            color: inherit;
        }
        .result-title a:hover {
            color: var(--primary);
        }
        .result-excerpt {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
            flex: 1;
        }
        .result-link {
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-self: flex-start;
            align-items: center;
            gap: 6px;
        }
        .result-link i {
            transition: transform 0.2s ease;
            font-size: 12px;
        }
        .result-link:hover {
            color: var(--accent);
        }
        .result-link:hover i {
            transform: translateX(4px);
        }

        /* ========== data band ========== */
        .data-band {
            background: var(--primary-deep);
            color: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            padding: 0;
            margin-top: 30px;
            position: relative;
        }
        .data-band .grid-x {
            align-items: stretch;
        }
        .data-band .data-cell {
            padding: 40px 36px;
            border-right: 1px solid rgba(255, 255, 255, 0.12);
            text-align: center;
            transition: background 0.3s ease;
        }
        .data-band .data-cell:last-child {
            border-right: none;
        }
        .data-band .data-cell:hover {
            background: rgba(255, 255, 255, 0.03);
        }
        .data-cell .data-value {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.2;
            color: #ffffff;
            margin-bottom: 8px;
            font-variant-numeric: tabular-nums;
        }
        .data-cell .data-label {
            font-size: 15px;
            color: #B9CCD9;
            line-height: 1.5;
            max-width: 180px;
            margin: 0 auto;
        }
        .data-highlight .data-value {
            color: #FFBE8A;
        }

        /* ========== Cover topic ========== */
        .topic-band {
            max-width: 1100px;
            margin: 0 auto;
        }
        .topic-band .grid-x {
            align-items: stretch;
        }
        .topic-card-main {
            background: #ffffff;
            border-radius: var(--radius);
            border: 1px solid var(--card-border);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            height: calc(100% - 20px);
            margin-bottom: 20px;
            transition: var(--transition);
        }
        .topic-card-main:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .topic-card-cover {
            height: 220px;
            background-size: cover;
            background-position: center;
        }
        .topic-body {
            padding: 28px;
        }
        .topic-more-card {
            background: var(--primary-light);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            padding: 30px 26px;
            height: calc(100% - 20px);
            margin-bottom: 20px;
            transition: var(--transition);
        }
        .topic-more-card:hover {
            box-shadow: var(--shadow-card);
        }
        .topic-mini-list-item {
            padding: 12px 14px;
            background: #fff;
            border-radius: 10px;
            border: 1px solid var(--card-border);
            margin-bottom: 10px;
            display: flex;
            gap: 14px;
            align-items: center;
            transition: var(--transition);
        }
        .topic-mini-list-item:hover {
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(26, 92, 140, 0.08);
        }
        .topic-mini-list-item .icon-box {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 19px;
        }
        .topic-mini-list-item h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 2px;
            line-height: 1.4;
        }
        .topic-mini-list-item p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.5;
            margin-bottom: 0;
        }

        /* ========== Search band full ========== */
        .search-tip-section {
            background: #ffffff;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            padding: 64px 0;
        }
        .search-tip-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
            max-width: 1100px;
            margin: 0 auto;
        }
        .search-guide-copy .search-keywords {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }
        .search-guide-copy .search-keywords span {
            background: var(--primary-light);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 10px 16px;
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 500;
        }
        .search-guide-copy .search-keywords span i {
            color: var(--accent);
        }
        .search-mock {
            background: var(--primary-deep);
            border-radius: var(--radius);
            padding: 32px 30px;
            box-shadow: var(--shadow-card);
        }
        .mock-bar {
            background: rgba(255, 255, 255, 0.1);
            border-radius: 12px;
            padding: 10px 16px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: #99AFC0;
            font-size: 15px;
            margin-bottom: 20px;
        }
        .mock-bar i {
            color: #FFBE8A;
        }
        .mock-line {
            height: 12px;
            border-radius: 6px;
            background: rgba(255, 255, 255, 0.15);
            margin-bottom: 12px;
        }
        .mock-line.short {
            width: 60%;
        }
        .mock-line.mid {
            width: 80%;
        }
        .mock-tags {
            display: flex;
            gap: 8px;
        }
        .mock-tags i {
            font-style: normal;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 13px;
            color: #E0EAF2;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--primary-light);
        }
        .faq-header {
            max-width: 800px;
            margin: 0 auto 50px;
            text-align: center;
        }
        .faq-wrap {
            max-width: 900px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--card-border);
            border-radius: 14px;
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow 0.2s ease;
        }
        .faq-item.open {
            box-shadow: var(--shadow-card);
        }
        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            padding: 20px 28px;
            cursor: pointer;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            background: transparent;
            width: 100%;
            text-align: left;
            border: none;
            transition: var(--transition);
        }
        .faq-q:hover {
            color: var(--primary);
        }
        .faq-icon {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
            background: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            transition: transform 0.3s ease, background 0.3s ease;
        }
        .faq-item.open .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-a {
            padding: 0 28px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            font-size: 15.5px;
            color: var(--text-secondary);
            line-height: 1.85;
            border-top: 0px solid var(--border-color);
        }
        .faq-item.open .faq-a {
            max-height: 400px;
            padding: 0 28px 22px;
            border-top-width: 1px;
            padding-top: 16px;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: #ffffff;
        }
        .cta-wrap {
            max-width: 960px;
            margin: 0 auto;
            text-align: center;
            background: var(--primary-light);
            border-radius: 20px;
            padding: 60px 50px;
            border: 1px solid var(--border-color);
        }
        .cta-wrap h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary-deep);
            margin-bottom: 14px;
        }
        .cta-wrap p {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 620px;
            margin: 0 auto 26px;
        }
        .cta-btns {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 14px;
        }

        /* ========== Sticky bottom bar ========== */
        .fixed-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(2px);
            box-shadow: 0 -4px 18px rgba(16, 58, 87, 0.12);
            z-index: 90;
            padding: 12px 0;
            border-top: 1px solid var(--border-color);
            transform: translateY(100%);
            transition: transform 0.3s ease;
        }
        .fixed-cta.show {
            transform: translateY(0);
        }
        .fixed-cta .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            flex-wrap: wrap;
        }
        .fixed-cta-text {
            font-size: 15.5px;
            font-weight: 600;
            color: var(--text-main);
        }
        .fixed-cta-text i {
            color: var(--accent);
            margin-right: 6px;
        }

        /* ========== Site Footer ========== */
        .site-footer {
            background: var(--primary-deep);
            color: #DDE7EE;
            padding: 68px 0 0;
            margin-top: 0;
        }
        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
            font-size: 18px;
        }
        .site-footer .footer-brand-name {
            font-weight: 600;
            font-size: 19px;
            color: #fff;
        }
        .site-footer .footer-abouts {
            line-height: 1.8;
            color: #B9CCD9;
            font-size: 15px;
            margin-bottom: 0;
            margin-top: 10px;
        }
        .footer-heading {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: #B9CCD9;
            font-size: 15px;
            padding: 4px 0;
            display: inline-block;
        }
        .footer-links a:hover {
            color: #fff;
            text-decoration: none;
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            margin-top: 48px;
            padding: 24px 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            color: #8DA9BB;
            font-size: 14px;
        }
        .footer-bottom a {
            color: #B9CCD9;
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        body {
            padding-bottom: 68px;
        }
        .site-footer {
            margin-bottom: 0;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1200px) {
            .content-split {
                grid-template-columns: 260px 1fr;
                gap: 30px;
            }
            .result-thumb {
                flex-basis: 240px;
            }
        }
        @media (max-width: 1023px) {
            .header-main {
                gap: 12px;
            }
            .header-search-col {
                order: 3;
                flex-basis: 100%;
                max-width: 100%;
            }
            .header-actions {
                margin-left: auto;
            }
            .content-split {
                grid-template-columns: 1fr;
            }
            .index-panel {
                position: static;
                margin-bottom: 20px;
            }
            .index-panel ul {
                display: flex;
                flex-wrap: wrap;
                gap: 6px;
            }
            .index-panel ul li a {
                padding: 8px 14px;
                border-radius: 999px;
                background: var(--primary-light);
                font-size: 14px;
            }
            .index-panel ul li a .idx-num {
                margin-right: 4px;
            }
            .archive-pre-list {
                grid-template-columns: 1fr 1fr;
            }
            .cat-hero h1 {
                font-size: 34px;
            }
            .section-heading {
                font-size: 27px;
            }
            .search-tip-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .result-thumb {
                flex-basis: 220px;
            }
        }
        @media (max-width: 767px) {
            .nav-toggle {
                display: inline-flex;
            }
            .nav-inner {
                flex-wrap: wrap;
            }
            .nav-list {
                display: none;
                flex-basis: 100%;
                flex-direction: column;
                padding: 10px 0 6px;
            }
            .nav-list.show {
                display: flex;
            }
            .nav-list li a {
                display: block;
                padding: 12px 8px;
                border-bottom: none;
                border-left: 3px solid transparent;
            }
            .nav-list li.active a {
                border-left-color: var(--accent);
                border-bottom: none;
                background: rgba(26, 92, 140, 0.04);
            }
            .section-pad {
                padding: 50px 0;
            }
            .section-pad-sm {
                padding: 38px 0;
            }
            .cat-hero h1 {
                font-size: 30px;
            }
            .result-item {
                flex-direction: column;
            }
            .result-thumb {
                flex-basis: auto;
                width: 100%;
                height: 190px;
            }
            .result-body {
                padding: 24px 20px;
            }
            .result-title {
                font-size: 19px;
            }
            .data-band .data-cell {
                border-right: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            }
            .data-band .data-cell:last-child {
                border-bottom: none;
            }
            .data-cell .data-value {
                font-size: 32px;
            }
            .topic-card-main,
            .topic-more-card {
                margin-bottom: 20px;
            }
            .search-guide-copy h2 {
                font-size: 26px;
            }
            .faq-q {
                font-size: 16px;
                padding: 16px 20px;
            }
            .faq-a {
                font-size: 15px;
            }
            .cta-wrap {
                padding: 40px 24px;
            }
            .cta-wrap h2 {
                font-size: 26px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-heading {
                font-size: 24px;
            }
            .cat-hero .cat-hero-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .cat-hero-side {
                width: 100%;
                min-width: 0;
            }
            .search-form {
                height: 48px;
            }
            .search-submit span {
                display: none;
            }
            .fixed-cta .btn {
                padding: 10px 18px;
                font-size: 14px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .brand-name {
                font-size: 18px;
            }
            .brand-logo {
                width: 38px;
                height: 38px;
                font-size: 17px;
            }
            .search-submit {
                padding: 8px 12px;
            }
            .nav-list li a {
                font-size: 15px;
            }
            .cat-hero h1 {
                font-size: 26px;
            }
            .cat-hero .hero-desc {
                font-size: 16px;
            }
            .index-panel-title {
                font-size: 16px;
            }
            .result-body {
                padding: 20px 16px;
            }
            .result-title {
                font-size: 18px;
            }
            .badge {
                font-size: 12px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 15px;
            }
            .fixed-cta-text {
                font-size: 13.5px;
            }
            .fixed-cta .btn {
                padding: 8px 16px;
                font-size: 13.5px;
            }
            .faq-q {
                font-size: 15px;
            }
            .h2-title {
                font-size: 22px;
            }
        }

/* roulang page: article */
:root {
  --brand-blue: #1A5C8C;
  --brand-blue-deep: #103A57;
  --brand-orange: #EF7522;
  --body-bg: #F3F7FB;
  --card-bg: #FFFFFF;
  --text-main: #1F3346;
  --text-sub: #5B6E7C;
  --border-light: #DCE7EF;
  --card-border: #E5EEF6;
  --radius-xl: 18px;
  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-btn: 8px;
  --shadow-card: 0 10px 30px rgba(16, 58, 87, 0.08);
  --shadow-hover: 0 18px 42px rgba(16, 58, 87, 0.14);
  --header-height: 132px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--body-bg);
  color: var(--text-main);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

ul,
ol {
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

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

button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

:focus-visible {
  outline: 3px solid rgba(26, 92, 140, 0.35);
  outline-offset: 2px;
  border-radius: 4px;
}

.container {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

@media screen and (max-width: 639px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
}

/* ===== Header ===== */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: 60;
  box-shadow: 0 1px 12px rgba(16, 58, 87, 0.04);
}

.header-main {
  display: flex;
  align-items: center;
  gap: 30px;
  padding: 14px 0 10px;
}

.brand-block {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  gap: 12px;
}

.brand-logo {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  background: var(--brand-blue);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.02em;
  box-shadow: 0 10px 20px rgba(26, 92, 140, 0.2);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}

.brand-name {
  color: var(--text-main);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.brand-sub {
  color: var(--text-sub);
  font-size: 13px;
  margin-top: 3px;
}

.header-search-col {
  flex: 1;
  max-width: 640px;
  margin-left: auto;
}

.search-form {
  position: relative;
  display: flex;
  align-items: center;
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: 999px;
  height: 48px;
  transition: border 0.25s ease, box-shadow 0.25s ease;
}

.search-form:focus-within {
  border-color: rgba(26, 92, 140, 0.6);
  box-shadow: 0 0 0 5px rgba(26, 92, 140, 0.12);
}

.search-icon {
  position: absolute;
  left: 19px;
  top: 50%;
  margin-top: -8.5px;
  width: 17px;
  height: 17px;
  color: var(--text-sub);
  pointer-events: none;
}

.search-input {
  width: 100%;
  height: 100%;
  border: 0;
  background: transparent;
  padding: 0 118px 0 48px;
  color: var(--text-main);
  border-radius: 999px;
}

.search-input::placeholder {
  color: #96A8B4;
  font-size: 14px;
  letter-spacing: 0.02em;
}

.search-input:focus {
  outline: none;
}

.search-submit {
  position: absolute;
  right: 6px;
  top: 5px;
  display: flex;
  align-items: center;
  gap: 7px;
  height: 36px;
  padding: 0 16px;
  border-radius: 999px;
  background: var(--brand-blue);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  transition: background 0.2s ease, transform 0.2s ease;
}

.search-submit:hover {
  background: #144f78;
}

.header-actions {
  flex-shrink: 0;
}

.header-live {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid #F6D3BF;
  border-radius: 999px;
  background: #FFF9F5;
  color: #E66300;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.header-live span {
  font-size: 12px;
  color: #F0812F;
}

.header-live:hover {
  background: #FFF1E7;
}

.nav-holder {
  background: #fff;
  border-top: 1px solid #F0F5F9;
}

.nav-inner {
  display: flex;
  align-items: center;
  min-height: 52px;
}

.nav-toggle {
  display: none;
}

.nav-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
  gap: 6px;
}

.nav-list li a {
  display: block;
  padding: 9px 20px;
  border-radius: 999px;
  color: var(--text-main);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.4;
  transition: all 0.2s ease;
}

.nav-list li a:hover {
  background: var(--body-bg);
  color: var(--brand-blue);
}

.nav-list li.active a {
  color: var(--brand-orange);
  background: rgba(239, 117, 34, 0.1);
  font-weight: 700;
}

@media screen and (max-width: 1023px) {
  .header-main {
    flex-wrap: wrap;
    gap: 16px;
  }

  .header-search-col {
    order: 3;
    flex: 0 0 100%;
    max-width: 100%;
  }

  .header-actions {
    margin-left: auto;
  }

  .nav-list li a {
    padding: 9px 14px;
    font-size: 14px;
  }
}

@media screen and (max-width: 767px) {
  .site-header {
    position: relative;
  }

  .header-main {
    padding-top: 12px;
  }

  .brand-logo {
    width: 44px;
    height: 44px;
    font-size: 18px;
    border-radius: 12px;
  }

  .brand-name {
    font-size: 17px;
  }

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

  .header-search-col {
    margin-top: 2px;
  }

  .header-live {
    display: none;
  }

  .nav-inner {
    min-height: 48px;
    justify-content: flex-end;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: 1px solid var(--border-light);
    border-radius: 8px;
    color: var(--brand-blue);
    background: #fff;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    padding: 8px 0 12px;
    border-top: 1px solid #EFF4F8;
    gap: 4px;
  }

  .nav-list.open {
    display: flex;
  }

  .nav-list li a {
    border-radius: 10px;
    padding: 12px 16px;
    font-size: 15px;
  }
}

/* ===== Article page ===== */
.article-page-main {
  overflow: hidden;
}

.article-detail {
  padding: 38px 0 54px;
}

.article-inner-wrap {
  max-width: 860px;
  margin: 0 auto;
}

.article-breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--text-sub);
  margin-bottom: 22px;
}

.article-breadcrumb a {
  color: var(--brand-blue);
}

.article-breadcrumb a:hover {
  color: var(--brand-orange);
}

.article-breadcrumb span.sep {
  color: #B7C6D2;
}

.article-header-content {
  padding: 22px 0 12px;
}

.article-cat-tag {
  display: inline-block;
  background: #E8F1F7;
  border-radius: 999px;
  color: var(--brand-blue);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 5px 14px;
  margin-bottom: 16px;
}

.article-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.28;
  color: var(--text-main);
  letter-spacing: -0.01em;
  margin-bottom: 17px;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 14px;
  color: var(--text-sub);
  font-size: 14px;
}

.article-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-meta .meta-item svg {
  color: #8FA6B5;
}

.meta-divider {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: #C9D6E0;
}

.article-cover {
  margin-top: 26px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: #E8F0F6;
  box-shadow: var(--shadow-card);
}

.article-cover img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.article-richtext {
  margin-top: 36px;
  font-size: 17px;
  color: var(--text-main);
}

.article-richtext p {
  margin: 0 0 22px;
  letter-spacing: 0.01em;
}

.article-richtext a {
  color: var(--brand-blue);
  border-bottom: 1px solid rgba(26, 92, 140, 0.3);
  padding-bottom: 1px;
}

.article-richtext a:hover {
  color: var(--brand-orange);
  border-color: rgba(239, 117, 34, 0.3);
}

.article-richtext h2 {
  font-size: 27px;
  font-weight: 800;
  margin: 42px 0 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-light);
  letter-spacing: -0.01em;
}

.article-richtext h3 {
  font-size: 22px;
  font-weight: 700;
  margin: 34px 0 14px;
  color: var(--brand-blue-deep);
}

.article-richtext h4 {
  font-size: 18px;
  font-weight: 700;
  margin: 24px 0 10px;
}

.article-richtext ul,
.article-richtext ol {
  margin: 0 0 24px;
  padding-left: 24px;
  line-height: 1.9;
}

.article-richtext ul {
  list-style: disc;
}

.article-richtext ol {
  list-style: decimal;
}

.article-richtext blockquote {
  margin: 30px 0;
  padding: 20px 24px;
  border-left: 4px solid var(--brand-blue);
  background: #F0F6FB;
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  color: var(--text-main);
  font-size: 16px;
}

.article-richtext blockquote p:last-child {
  margin-bottom: 0;
}

.article-richtext img {
  border-radius: 16px;
  margin: 28px 0;
  box-shadow: var(--shadow-card);
}

.article-richtext table {
  width: 100%;
  margin: 24px 0;
  border-collapse: collapse;
  background: #fff;
}

.article-richtext th,
.article-richtext td {
  padding: 12px 14px;
  border: 1px solid var(--border-light);
  text-align: left;
}

.article-richtext th {
  background: #F0F6FB;
  font-weight: 700;
  color: var(--brand-blue-deep);
}

.article-bottom-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 50px;
  padding-top: 26px;
  border-top: 1px solid var(--border-light);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 11px 24px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease, border 0.2s ease;
}

.btn svg {
  width: 16px;
  height: 16px;
}

.btn-blue {
  background: var(--brand-blue);
  color: #fff;
  box-shadow: 0 10px 22px rgba(26, 92, 140, 0.18);
}

.btn-blue:hover {
  background: #144f78;
  color: #fff;
  box-shadow: 0 14px 28px rgba(26, 92, 140, 0.24);
}

.btn-outline {
  background: #fff;
  border: 1px solid var(--border-light);
  color: var(--brand-blue);
}

.btn-outline:hover {
  border-color: var(--brand-blue);
  background: rgba(26, 92, 140, 0.04);
}

.article-help-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-sub);
  font-size: 14px;
}

.article-help-link:hover {
  color: var(--brand-orange);
}

/* ===== NotFound ===== */
.notfound-panel {
  max-width: 720px;
  margin: 30px auto;
  background: #fff;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  padding: 72px 32px;
  text-align: center;
}

.notfound-icon {
  width: 78px;
  height: 78px;
  margin: 0 auto 22px;
  background: #F0F6FB;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-blue);
}

.notfound-panel h1 {
  font-size: 30px;
  font-weight: 800;
  margin-bottom: 12px;
}

.notfound-panel p {
  color: var(--text-sub);
  max-width: 460px;
  margin: 0 auto 26px;
}

/* ===== Related / guide ===== */
.section-guide {
  background: #fff;
  border-top: 1px solid #EBF1F6;
  padding: 68px 0;
}

.section-head {
  max-width: 720px;
  margin-bottom: 38px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--brand-orange);
  background: #FFF4EC;
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 13px;
}

.section-head h2 {
  font-size: clamp(24px, 3vw, 33px);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 12px;
  color: var(--text-main);
}

.section-head .section-desc {
  color: var(--text-sub);
  font-size: 16px;
  margin: 0;
}

.guide-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: #fff;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(16, 58, 87, 0.05);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.guide-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: #C9DDEC;
}

.guide-card-thumb {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #EAF1F7;
}

.guide-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.guide-card:hover .guide-card-thumb img {
  transform: scale(1.04);
}

.guide-card-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 24px 24px 22px;
}

.guide-card-tag {
  display: inline-flex;
  align-self: flex-start;
  font-size: 12px;
  font-weight: 600;
  color: var(--brand-blue);
  background: #EBF3F9;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.guide-card h3 {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 12px;
}

.guide-card-body p {
  font-size: 14px;
  color: var(--text-sub);
  margin: 0 0 18px;
  flex: 1;
  line-height: 1.8;
}

.guide-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand-blue);
  font-size: 14px;
  font-weight: 600;
}

.guide-more:hover {
  color: var(--brand-orange);
}

/* ===== Dark CTA ===== */
.cta-section {
  padding: 68px 0 18px;
}

.dark-cta-wrap {
  background: var(--brand-blue-deep);
  border-radius: 24px;
  padding: 44px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
  flex-wrap: wrap;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.dark-cta-wrap::before {
  content: "";
  position: absolute;
  width: 320px;
  height: 320px;
  right: -80px;
  top: -120px;
  border-radius: 50%;
  background: rgba(234, 122, 32, 0.2);
}

.dark-cta-copy {
  position: relative;
  z-index: 2;
  flex: 1;
  min-width: 300px;
}

.dark-cta-copy .tiny-label {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: #FFC6A1;
  font-weight: 700;
  margin-bottom: 10px;
}

.dark-cta-copy h2 {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 12px;
}

.dark-cta-copy p {
  color: #C4D8E5;
  font-size: 16px;
  margin: 0;
}

.dark-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  position: relative;
  z-index: 2;
}

.btn-cta-light {
  background: #fff;
  color: var(--brand-blue);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.btn-cta-light:hover {
  background: #F4F9FD;
  color: var(--brand-blue);
}

.btn-cta-orange {
  background: var(--brand-orange);
  color: #fff;
  box-shadow: 0 10px 30px rgba(239, 117, 34, 0.25);
}

.btn-cta-orange:hover {
  background: #de6417;
  color: #fff;
  transform: translateY(-1px);
}

/* ===== FAQ ===== */
.faq-section {
  padding: 52px 0 80px;
}

.faq-card-panel {
  background: #fff;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 12px 26px 6px;
  box-shadow: var(--shadow-card);
  max-width: 920px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid #E8EEF4;
  padding: 18px 0;
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  cursor: pointer;
  list-style: none;
  color: var(--text-main);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
}

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

.faq-question:hover {
  color: var(--brand-blue);
}

.faq-question .faq-q-icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  color: var(--brand-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #E0E9F0;
  border-radius: 50%;
}

.faq-question .faq-q-icon svg {
  width: 12px;
  height: 12px;
}

.faq-item[open] .faq-q-icon {
  transform: rotate(45deg);
  background: #F0F6FB;
}

.faq-answer {
  color: var(--text-sub);
  font-size: 15px;
  padding: 14px 0 6px;
  max-width: 760px;
}

.faq-answer p {
  margin: 0 0 10px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--brand-blue-deep);
  color: #E8F1F7;
  padding: 66px 0 0;
  margin-top: 76px;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  margin-bottom: 22px;
}

.footer-logo {
  width: 48px;
  height: 48px;
  background: var(--brand-blue);
  color: #fff;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  font-weight: 800;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.16);
}

.footer-brand-name {
  font-size: 19px;
  font-weight: 800;
  color: #fff;
}

.footer-brand-sub {
  color: #A6C0CF;
  font-size: 13px;
  margin-top: 4px;
}

.footer-about-text {
  color: #B7CAD6;
  font-size: 14px;
  max-width: 340px;
  line-height: 1.9;
  margin-bottom: 28px;
}

.footer-heading {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 15px;
  letter-spacing: 0.02em;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer-links li a {
  color: #B7CAD6;
  font-size: 14px;
}

.footer-links li a:hover {
  color: #fff;
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  margin-top: 50px;
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 22px;
  color: #8FADBE;
  font-size: 13px;
}

@media screen and (max-width: 767px) {
  .footer-bottom {
    justify-content: center;
    text-align: center;
  }
}

/* ===== Mobile refinement ===== */
@media screen and (max-width: 767px) {
  .article-detail {
    padding: 20px 0 36px;
  }

  .article-title {
    font-size: 27px;
  }

  .article-richtext {
    font-size: 16px;
  }

  .article-richtext h2 {
    font-size: 23px;
    margin: 34px 0 14px;
  }

  .dark-cta-wrap {
    padding: 34px 24px;
  }

  .section-guide {
    padding: 48px 0;
  }

  .guide-card-body {
    padding: 20px;
  }

  .faq-card-panel {
    padding: 6px 18px 2px;
  }

  .site-footer {
    margin-top: 40px;
    padding-top: 44px;
  }
}

@media screen and (max-width: 520px) {
  .search-input {
    padding-right: 96px;
  }

  .search-submit {
    width: 36px;
    padding: 0;
    justify-content: center;
    font-size: 0;
    gap: 0;
  }

  .dark-cta-actions {
    width: 100%;
    flex-direction: column;
  }

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

  .article-bottom-nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .notfound-panel {
    padding: 48px 22px;
  }
}

/* roulang page: category2 */
:root {
  --primary: #1A5C8C;
  --primary-dark: #103A57;
  --primary-light: #e2edf6;
  --accent: #EF7522;
  --bg: #F3F7FB;
  --white: #FFFFFF;
  --text-1: #1F3346;
  --text-2: #5B6E7C;
  --border: #DCE7EF;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 4px 14px rgba(16,58,87,.06);
  --shadow-md: 0 10px 30px rgba(16,58,87,.10);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  background: var(--bg);
  color: var(--text-1);
  margin: 0;
  line-height: 1.75;
  font-size: 16px;
}
img { max-width: 100%; height: auto; display: inline-block; }
a { color: inherit; text-decoration: none; transition: color .2s ease; }
ul, ol, p, figure { margin: 0; padding: 0; }
button { cursor: pointer; font: inherit; background: none; border: 0; }
.container { max-width: 1240px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: relative;
  z-index: 60;
  box-shadow: 0 2px 12px rgba(16,58,87,.03);
}
.header-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  padding: 16px 0 10px;
  gap: 16px;
}
.brand-block {
  display: flex;
  align-items: center;
  gap: 11px;
}
.brand-logo {
  width: 44px;
  height: 44px;
  background: var(--primary);
  border-radius: 11px;
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  letter-spacing: -.5px;
  box-shadow: 0 6px 16px rgba(26,92,140,.22);
}
.brand-name {
  font-size: 19px;
  font-weight: 800;
  color: var(--primary-dark);
  letter-spacing: .2px;
  display: block;
  line-height: 1.2;
}
.brand-sub {
  font-size: 12px;
  color: var(--text-2);
  display: block;
  margin-top: 3px;
  letter-spacing: .15em;
}
.header-search-col { flex: 1 1 480px; max-width: 680px; min-width: 300px; }
.search-form {
  display: flex;
  align-items: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 46px;
  padding-left: 16px;
  padding-right: 6px;
  min-height: 44px;
  transition: box-shadow .2s ease, border-color .2s ease, background .2s;
}
.search-form:focus-within {
  background: #fff;
  border-color: #8fb8d6;
  box-shadow: 0 0 0 4px rgba(26,92,140,.1);
}
.search-icon { color: #7b90a1; display: inline-flex; margin-right: 8px; }
.search-input {
  border: 0;
  outline: 0;
  background: transparent;
  flex: 1;
  font-size: 15px;
  min-width: 80px;
  color: var(--text-1);
}
.search-input::placeholder { color: #92a3af; }
.search-submit {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary);
  border-radius: 40px;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 8px 17px;
  transition: background .22s, transform .16s;
  flex-shrink: 0;
}
.search-submit:hover { background: var(--primary-dark); }
.header-actions { display: flex; align-items: center; gap: 9px; }
.header-live {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
  background: #fff5ec;
  border: 1px solid #f8d5ba;
  border-radius: 30px;
  padding: 8px 15px;
  transition: all .2s ease;
}
.header-live:hover { background: #ffe9d8; }
.header-live span { font-size: 12px; }
.nav-holder { border-top: 1px solid #ecf2f7; background: #fff; }
.nav-inner {
  display: flex;
  align-items: center;
  min-height: 52px;
}
.nav-list {
  display: flex;
  list-style: none;
  gap: 4px;
  align-items: center;
  flex-wrap: wrap;
}
.nav-list > li {}
.nav-list > li > a {
  display: block;
  padding: 8px 18px;
  border-radius: 30px;
  color: var(--text-2);
  font-size: 15px;
  font-weight: 500;
  transition: all .2s ease;
}
.nav-list > li > a:hover { color: var(--primary); background: var(--primary-light); }
.nav-list > li.active > a {
  color: #fff;
  background: var(--primary);
  font-weight: 600;
  box-shadow: 0 6px 14px rgba(26,92,140,.2);
}
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  color: var(--primary);
}
.nav-toggle svg { width: 21px; height: 21px; }

main { overflow: hidden; }
.section { padding: 68px 0; }
.section-tight { padding: 48px 0; }
.section-muted { background: #fff; }

.eyebrow {
  display: inline-block;
  color: var(--primary);
  font-size: 14px;
  letter-spacing: .1em;
  font-weight: 700;
  text-transform: uppercase;
}
.section-title {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary-dark);
  margin: 14px 0 10px;
  letter-spacing: .4px;
  line-height: 1.4;
}
.section-sub { color: var(--text-2); max-width: 720px; }
.title-row { margin-bottom: 28px; }

/* hero */
.page-hero {
  background: #edf5fb;
  border-bottom: 1px solid #dfeaf3;
  position: relative;
}
.page-hero .hero-head {
  padding: 58px 0 64px;
  max-width: 900px;
}
.hero-crumb {
  display: flex;
  gap: 9px;
  align-items: center;
  color: var(--text-2);
  font-size: 14px;
  margin-bottom: 17px;
  flex-wrap: wrap;
}
.hero-crumb a:hover { color: var(--primary); text-decoration: underline; }
.hero-crumb .current { color: var(--primary); font-weight: 600; }
.page-hero h1 {
  font-size: 36px;
  line-height: 1.3;
  color: var(--primary-dark);
  margin: 6px 0 12px;
  font-weight: 800;
  letter-spacing: .4px;
}
.hero-lead {
  font-size: 18px;
  color: var(--text-2);
  max-width: 760px;
  line-height: 1.8;
}

/* flow section */
.flow-section { background: var(--bg); }
.flow-wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 10px;
  position: relative;
}
.flow-step {
  background: #fff;
  border-radius: var(--radius);
  padding: 26px 24px 20px;
  border: 1px solid #e5edf3;
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: transform .25s ease, box-shadow .2s;
}
.flow-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.flow-number {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 13px;
}
.flow-step:nth-child(2) .flow-number { background: var(--primary-dark); }
.flow-step:nth-child(3) .flow-number { background: var(--accent); }
.flow-step:nth-child(4) .flow-number { background: #4d86a8; }
.flow-step h3 {
  font-size: 18px;
  color: var(--primary-dark);
  margin-bottom: 11px;
  line-height: 1.5;
}
.flow-step p { font-size: 15px; color: var(--text-2); }
.flow-tag {
  display: inline-block;
  margin-top: 13px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  padding: 4px 11px;
  border-radius: 20px;
}
.flow-tag.orange { background: #fff0df; color: #c96414; }

/* asymmetric section */
.asym-section { background: #fff; }
.asym-grid {
  display: flex;
  gap: 24px;
  align-items: stretch;
  flex-wrap: wrap;
}
.asym-wide {
  flex: 1 1 calc(66.6% - 24px);
  background: var(--bg);
  border-radius: 18px;
  padding: 34px 36px;
  border: 1px solid var(--border);
}
.asym-narrow {
  flex: 1 1 320px;
  background: var(--primary-dark);
  border-radius: 18px;
  padding: 34px 32px;
  color: #fff;
  box-shadow: var(--shadow-md);
}
.asym-narrow h3,
.asym-wide h2 { margin-top: 0; color: var(--primary-dark); }
.asym-wide h2 { font-size: 22px; margin-bottom: 14px; }
.asym-narrow h3 { color: #fff; font-size: 20px; margin-bottom: 14px; }
.asym-wide hr.soft-hr { border: 0; border-top: 1px solid var(--border); margin: 18px 0; }
.channel-compact { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.channel-item { background: #fff; border-radius: 12px; padding: 19px 20px; border: 1px solid #e6edf4; box-shadow: 0 2px 8px rgba(16,58,87,.04); }
.channel-item h4 { margin: 0 0 8px; font-size: 17px; color: var(--primary); display: flex; align-items: center; gap: 9px; }
.channel-item p { font-size: 15px; color: var(--text-2); line-height: 1.75; }
.channel-item .mini-link { color: var(--primary); font-size: 14px; font-weight: 700; margin-top: 11px; display: inline-block; }
.channel-item .mini-link:hover { text-decoration: underline; }
.asym-narrow ul { list-style: none; display: grid; gap: 16px; margin: 10px 0 0; }
.asym-narrow li { padding-left: 0; color: #d7e6f0; position: relative; padding-top: 2px; font-size: 15px; line-height: 1.8; }
.asym-narrow li::before {
  content: "";
  width: 9px;
  height: 9px;
  display: inline-block;
  border-radius: 50%;
  background: var(--accent);
  margin-right: 10px;
  flex: 0 0 9px;
  transform: translateY(-1px);
}

/* walkthrough / usage paths */
.walk-section { background: var(--bg); }
.walk-path {
  background: #fff;
  border-radius: 16px;
  padding: 22px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  border: 1px solid #e2ebf1;
  box-shadow: var(--shadow-sm);
  margin-bottom: 10px;
}
.walk-path:last-of-type { margin-bottom: 0; }
.walk-label { font-weight: 800; color: var(--primary-dark); display: inline-flex; align-items: center; gap: 8px; font-size: 16px; }
.walk-label span { color: var(--accent); }
.walk-desc { color: var(--text-2); flex: 1 1 auto; min-width: 230px; font-size: 15px; max-width: 640px; }
.walk-link { flex: 0 0 auto; }
.btn-outline {
  border: 1.5px solid var(--primary);
  color: var(--primary);
  border-radius: 30px;
  padding: 7px 20px;
  font-size: 14px;
  font-weight: 700;
  display: inline-block;
  transition: all .2s ease;
}
.btn-outline:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* highlight or cta */
.highlight-dark {
  background: linear-gradient(93deg, #103A57, #123f60);
  color: #fff;
  padding: 50px 0;
}
.highlight-dark .grid-x { align-items: center; }
.highlight-dark h2 { color: #fff; font-size: 26px; font-weight: 800; }
.highlight-dark .em-text { color: var(--accent); }
.highlight-dark p.lead-stat-text { color: #d2e1ed; font-size: 16px; }
.metric-row { display: flex; gap: 20px; margin-top: 20px; flex-wrap: wrap; }
.metric-block { background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.13); padding: 15px 24px; border-radius: 14px; }
.metric-num { font-size: 30px; font-weight: 800; color: #fff; line-height: 1; }
.metric-num small { font-size: 15px; color: var(--accent); font-weight: 800; }
.metric-label { color: #b4cbd8; font-size: 14px; margin-top: 7px; }

.btn-primary {
  display: inline-block;
  background: var(--primary);
  border-radius: 30px;
  color: #fff;
  font-weight: 700;
  font-size: 16px;
  padding: 12px 30px;
  box-shadow: 0 8px 20px rgba(26,92,140,.3);
  transition: all .22s ease;
}
.btn-primary:hover { background: var(--primary-dark); box-shadow: 0 10px 22px rgba(16,58,87,.34); transform: translateY(-1px); }
.btn-accent {
  display: inline-block;
  background: var(--accent);
  border-radius: 30px;
  color: #fff;
  font-weight: 800;
  font-size: 16px;
  padding: 12px 34px;
  box-shadow: 0 8px 22px rgba(239,117,34,.3);
  transition: all .22s ease;
}
.btn-accent:hover { background: #d85f14; color:#fff; transform: translateY(-1px); }
.btn-ghost {
  border-radius: 30px;
  border: 1px solid #fff;
  color: #fff;
  font-weight: 600;
  padding: 11px 20px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.btn-ghost:hover { background: rgba(255,255,255,.12); }

/* FAQ */
.faq-section { background: #fff; }
.faq-wrap { max-width: 1000px; }
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-bottom: 13px;
  overflow: hidden;
  transition: box-shadow .2s;
}
.faq-item:hover { box-shadow: var(--shadow-sm); }
.faq-q {
  width: 100%;
  padding: 18px 48px 18px 22px;
  text-align: left;
  font-size: 17px;
  font-weight: 700;
  color: var(--primary-dark);
  position: relative;
  transition: background .2s;
  line-height: 1.6;
}
.faq-item.active .faq-q { color: var(--primary); }
.faq-q:after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-weight: 700;
  font-size: 18px;
  transition: transform .25s ease;
}
.faq-item.active .faq-q:after { transform: translateY(-50%) rotate(45deg); }
.faq-a {
  display: none;
  padding: 4px 26px 22px;
  color: var(--text-2);
  font-size: 16px;
  max-width: 860px;
  line-height: 1.9;
}
.faq-item.active .faq-a { display: block; }

/* CTA */
.bottom-section { background: var(--bg); }
.bottom-cta {
  background: linear-gradient(97deg, #103a57, #1a5c8c);
  border-radius: 20px;
  padding: 46px 46px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: #fff;
  box-shadow: var(--shadow-md);
  flex-wrap: wrap;
}
.bottom-cta h2 { color: #fff; margin: 0 0 8px; font-size: 25px; font-weight: 800; }
.bottom-cta p { color: #cfdceb; font-size: 16px; margin: 0; max-width: 600px; }
.bottom-cta .btn-accent { flex-shrink: 0; }

/* fixed bottom strip */
.fixbar {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 100;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(8px);
  border-top: 1px solid #dcdfe8;
  box-shadow: 0 -6px 22px rgba(16,58,87,.07);
  transition: transform .3s ease;
}
.fixbar .fixbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 10px 0; flex-wrap: wrap; }
.fixbar-text { font-size: 15px; font-weight: 600; color: var(--text-1); }
.fixbar-text span { color: var(--accent); }
.fixbar .btn-fix {
  padding: 8px 20px;
  background: var(--accent);
  border-radius: 25px;
  color:#fff;
  font-weight:700;
  font-size:14px;
  transition: background .2s;
}
.fixbar .btn-fix:hover { background:#d85f14; }
body.has-fixbar { padding-bottom: 70px; }

/* site footer */
.site-footer {
  background: var(--primary-dark);
  color: #bcd0dd;
  padding: 50px 0 0;
  position: relative;
  z-index: 5;
}
.footer-brand { display: flex; align-items: center; gap: 10px; color:#fff; font-weight:700; font-size:17px; }
.footer-logo {
  width: 38px; height: 38px;
  background: #fff;
  color: var(--primary);
  border-radius: 10px;
  font-size: 17px;
  font-weight: 900;
  display:inline-flex; align-items:center; justify-content:center;
}
.footer-brand-name { display:block; font-weight:800; color:#fff; line-height:1.25; }
.footer-brand-sub { color:#9db9ca; font-size:12px; color:#b8cad7; }
.footer-about-text { margin-top: 18px; font-size: 15px; line-height:1.8; }
.footer-heading {
  color:#fff;
  font-weight:700;
  font-size:16px;
  margin: 4px 0 16px;
}
.footer-links { list-style:none; display:grid; gap:10px; }
.footer-links a { color:#bcd0dd; font-size:15px; }
.footer-links a:hover { color:#fff; text-decoration: underline; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.13);
  margin-top: 38px;
  padding: 18px 0;
  display:flex;
  justify-content:space-between;
  flex-wrap: wrap;
  gap:8px;
  color:#8faab9;
  font-size:14px;
}

/* responsive */
@media (max-width: 900px) {
  .header-col { flex-direction: column; }
  .flow-wrap { grid-template-columns: repeat(2, 1fr); }
  .page-hero h1 { font-size: 30px; }
}
@media (max-width: 640px) {
  .container { padding-left: 18px; padding-right: 18px; }
  .header-search-col { order: 3; flex: 1 1 100%; max-width: none; min-width:0; }
  .header-actions { margin-left: auto; }
  .nav-toggle { display: inline-flex; }
  .nav-list {
    display: none;
    width:100%;
    padding-top: 8px;
    flex-direction: column;
    align-items: stretch;
    padding-bottom: 13px;
    gap: 1px;
  }
  .nav-list.open { display: flex; }
  .nav-list > li > a { padding-left: 13px; }
  .flow-wrap { grid-template-columns: 1fr; }
  .channel-compact { grid-template-columns: 1fr; }
  .asym-wide { padding: 24px 20px; }
  .asym-narrow { padding: 26px 20px; }
  .section { padding: 40px 0; }
  .page-hero .hero-head { padding: 38px 0 42px; }
  .section-title { font-size: 23px; }
  .page-hero h1 { font-size: 27px; }
  .bottom-cta { padding: 26px 20px; }
  .highlight-dark .map-text-block { padding-right: 13px; }
  .fixbar-text { font-size: 13px; }
  .fixbar-text span { display: none; }
  .metric-block { flex:1; padding:12px 14px; }
  .metric-num{ font-size:24px; }
}

/* narrow card mixin */
.list-check-inline { display: flex; flex-direction: column; gap: 12px; margin-top:20px; }
.list-check-row { display: flex; gap: 12px; align-items: flex-start; }
.list-check-row .check-icon { color: #e6f0f6; background: rgba(255,255,255,.11); border-radius: 50%; width: 23px; height: 23px; flex:0 0 23px; display:inline-flex; align-items:center; justify-content:center; font-size:13px; }

/* roulang page: category3 */
:root {
  --primary: #1A5C8C;
  --primary-dark: #103A57;
  --primary-soft: #F3F7FB;
  --accent: #EF7522;
  --text: #1F3346;
  --muted: #5B6E7C;
  --border: #DCE7EF;
  --card-border: #E5EEF6;
  --white: #FFFFFF;
  --off-white: #F7FAFD;
  --light-deep: #E8F1F7;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow-card: 0 10px 30px rgba(16, 58, 87, 0.10);
  --shadow-hover: 0 18px 40px rgba(16, 58, 87, 0.16);
  --max-w: 1280px;
  --space: 96px;
}
*, *::before, *::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, sans-serif;
  background: var(--off-white);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
}
ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}
button, input, select, textarea {
  font-family: inherit;
}
button {
  border: 0;
  cursor: pointer;
  background: none;
}
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.section-block {
  padding: 72px 0;
}
.section-head {
  margin-bottom: 42px;
  max-width: 780px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.eyebrow::before {
  content: "";
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.section-head h2 {
  font-size: 32px;
  line-height: 1.35;
  color: var(--text);
  margin: 0 0 16px;
}
.section-head p {
  color: var(--muted);
  font-size: 17px;
  margin: 0;
}

.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: relative;
  z-index: 40;
}
.header-main {
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 16px 0 14px;
  flex-wrap: wrap;
}
.brand-block {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.brand-logo {
  width: 50px;
  height: 50px;
  background: var(--primary);
  color: var(--white);
  border-radius: 14px;
  font-weight: 800;
  font-size: 22px;
  letter-spacing: .02em;
  display: grid;
  place-items: center;
  box-shadow: 0 8px 18px rgba(26, 92, 140, 0.24);
}
.brand-name {
  display: block;
  font-size: 21px;
  font-weight: 800;
  color: var(--text);
  line-height: 1.2;
  letter-spacing: .01em;
}
.brand-sub {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
}
.header-search-col {
  flex: 1;
  min-width: 260px;
}
.search-form {
  display: flex;
  align-items: center;
  max-width: 640px;
  background: var(--primary-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 6px 5px 18px;
  transition: border .25s, box-shadow .25s, background .25s;
}
.search-form:focus-within {
  background: var(--white);
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(26, 92, 140, 0.10);
}
.search-icon {
  color: var(--muted);
  display: inline-flex;
  margin-right: 8px;
}
.search-input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  outline: none;
  font-size: 15px;
  color: var(--text);
  padding: 8px 0;
}
.search-submit {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary);
  color: var(--white);
  font-size: 14px;
  font-weight: 700;
  padding: 9px 22px;
  border-radius: 999px;
  transition: background .2s, transform .2s;
  white-space: nowrap;
}
.search-submit:hover {
  background: #0F4C77;
}
.search-submit:active {
  transform: scale(.97);
}
.header-actions {
  flex-shrink: 0;
}
.header-live {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #FFF3EA;
  color: #C95B10;
  font-size: 14px;
  font-weight: 700;
  padding: 10px 18px;
  border-radius: 999px;
  transition: background .2s, color .2s;
  white-space: nowrap;
}
.header-live span {
  font-size: 12px;
  color: var(--accent);
  animation: live-pulse 1.8s infinite;
}
@keyframes live-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .35; }
}
.header-live:hover {
  background: var(--accent);
  color: var(--white);
}
.header-live:hover span {
  color: var(--white);
}
.nav-holder {
  border-top: 1px solid #ECF2F7;
  background: var(--white);
}
.nav-inner {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 54px;
}
.nav-toggle {
  display: none;
  color: var(--text);
  padding: 10px;
  border-radius: 8px;
}
.nav-list {
  display: flex;
  align-items: center;
  gap: 34px;
}
.nav-list a {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  padding: 16px 2px 14px;
  position: relative;
  transition: color .2s;
}
.nav-list a:hover {
  color: var(--primary);
}
.nav-list li.active a {
  color: var(--primary);
}
.nav-list li.active a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  border-radius: 3px 3px 0 0;
  background: var(--accent);
}

.category-banner {
  background:
    linear-gradient(90deg, rgba(243, 247, 251, .96) 20%, rgba(243, 247, 251, .86)),
    url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  border-bottom: 1px solid var(--border);
  padding: 52px 0 56px;
}
.breadcrumb-area {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 24px;
}
.breadcrumb-area a {
  color: var(--muted);
  transition: color .2s;
}
.breadcrumb-area a:hover {
  color: var(--primary);
}
.breadcrumb-area .sep {
  color: #B6C9D6;
}
.banner-inner {
  display: flex;
  align-items: center;
  gap: 50px;
}
.banner-content {
  flex: 1.35;
}
.banner-prefix {
  display: inline-block;
  background: rgba(26, 92, 140, 0.08);
  border: 1px solid rgba(26, 92, 140, 0.14);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}
.category-banner h1 {
  font-size: 46px;
  line-height: 1.2;
  margin: 0 0 20px;
  color: var(--text);
  font-weight: 800;
  letter-spacing: .02em;
}
.banner-text {
  font-size: 17px;
  color: var(--muted);
  max-width: 680px;
  margin: 0 0 30px;
  line-height: 1.85;
}
.banner-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  padding: 15px 28px;
  transition: background .2s, box-shadow .2s, transform .2s, color .2s, border-color .2s;
}
.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 10px 22px rgba(26, 92, 140, 0.22);
}
.btn-primary:hover {
  background: #0F4C77;
  box-shadow: 0 14px 26px rgba(26, 92, 140, 0.28);
  transform: translateY(-2px);
}
.btn-outline {
  border: 1px solid #B9CFDE;
  background: rgba(255,255,255,.55);
  color: var(--primary);
}
.btn-outline:hover {
  border-color: var(--primary);
  background: var(--primary);
  color: var(--white);
}
.btn-orange {
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 10px 22px rgba(239, 117, 34, 0.24);
}
.btn-orange:hover {
  background: #DF6711;
  transform: translateY(-2px);
  box-shadow: 0 14px 26px rgba(239, 117, 34, 0.30);
}
.btn-light {
  background: var(--white);
  color: var(--primary-dark);
}
.btn-light:hover {
  background: #F2F7FB;
  transform: translateY(-2px);
}
.btn-outline-light {
  border: 1px solid rgba(255,255,255,.5);
  color: var(--white);
}
.btn-outline-light:hover {
  background: rgba(255,255,255,.14);
  border-color: rgba(255,255,255,.8);
}
.banner-panel {
  flex: .75;
  background: var(--primary-dark);
  border-radius: 22px;
  padding: 28px;
  color: var(--white);
  box-shadow: 0 24px 50px rgba(16, 58, 87, .22);
  position: relative;
  overflow: hidden;
}
.banner-panel::after {
  content: "";
  position: absolute;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
  top: -70px;
  right: -50px;
}
.panel-title {
  display: block;
  font-size: 13px;
  letter-spacing: .1em;
  color: #A9C6DA;
  margin-bottom: 16px;
}
.panel-list {
  display: grid;
  gap: 12px;
}
.panel-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 600;
}
.panel-item i {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 12px rgba(239,117,34,.8);
}
.panel-item small {
  display: block;
  font-size: 12px;
  font-weight: 400;
  color: #AFC8DA;
  margin-top: 2px;
}

.card-panel {
  background: var(--white);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}
.card-hover {
  transition: transform .3s, box-shadow .3s;
}
.card-hover:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.info-index-section {
  padding: 90px 0 40px;
  background: var(--white);
  border-bottom: 1px solid #E9F0F6;
}
.index-grid-inner {
  display: flex;
  gap: 44px;
  align-items: stretch;
}
.index-tree {
  flex: 0 0 420px;
  padding: 30px;
  border-radius: 20px;
  background: var(--primary-soft);
  border: 1px solid #E2ECF4;
  align-self: start;
}
.index-tree-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 15px;
  font-weight: 800;
  color: var(--primary-dark);
}
.index-tree-heading span {
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
}
.index-item {
  display: flex;
  gap: 16px;
  padding: 17px 4px;
  border-bottom: 1px solid rgba(220, 231, 239, .85);
  transition: padding .2s;
}
.index-item:last-child {
  border-bottom: 0;
}
.index-item:hover {
  padding-left: 12px;
}
.index-no {
  font-size: 13px;
  font-weight: 800;
  color: var(--primary);
  opacity: .65;
  line-height: 1;
}
.index-item h3 {
  margin: 0 0 4px;
  font-size: 17px;
  color: var(--text);
}
.index-item p {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
}

.preview-area {
  flex: 1;
  min-width: 0;
}
.preview-note {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #FFF8F2;
  border: 1px solid #FBE3D2;
  color: #A5531C;
  border-radius: 12px;
  font-size: 14px;
  padding: 12px 16px;
  margin-bottom: 18px;
}
.preview-note::before {
  content: "i";
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  display: inline-grid;
  place-items: center;
  flex-shrink: 0;
}
.preview-list {
  display: grid;
  gap: 22px;
}
.preview-card {
  display: flex;
  overflow: hidden;
  min-height: 190px;
}
.preview-thumb {
  width: 34%;
  flex-shrink: 0;
  min-height: 100%;
  overflow: hidden;
  background: var(--primary-soft);
}
.preview-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.preview-card:hover .preview-thumb img {
  transform: scale(1.05);
}
.preview-body {
  flex: 1;
  padding: 28px 30px;
}
.meta-lines {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 13px;
  color: var(--muted);
}
.article-tag {
  background: var(--light-deep);
  color: var(--primary);
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
}
.preview-body h3 {
  font-size: 22px;
  margin: 0 0 12px;
  line-height: 1.45;
  color: var(--text);
  font-weight: 800;
}
.preview-body p {
  color: var(--muted);
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.8;
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 700;
  font-size: 14px;
  transition: gap .2s;
}
.text-link:hover {
  gap: 11px;
  color: #0F4C77;
}

.visual-feature {
  padding: 90px 0 80px;
  background: var(--primary-soft);
  border-bottom: 1px solid #E1EBF3;
}
.feature-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.feature-unit {
  background: rgba(255,255,255,.86);
  border-radius: 18px;
  padding: 26px 24px;
  border: 1px solid rgba(26,92,140,.08);
  box-shadow: 0 6px 18px rgba(16,58,87,.05);
  transition: transform .3s, box-shadow .3s;
  position: relative;
}
.feature-unit:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card);
  background: var(--white);
}
.feature-no {
  font-size: 14px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: .02em;
  margin-bottom: 10px;
}
.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--primary);
  color: var(--white);
  display: grid;
  place-items: center;
  margin-bottom: 16px;
}
.feature-unit h3 {
  margin: 0 0 8px;
  font-size: 18px;
  color: var(--text);
  font-weight: 800;
}
.feature-unit p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.process-band {
  background: var(--primary-dark);
  color: var(--white);
  padding: 86px 0 88px;
}
.process-band .section-head h2 {
  color: var(--white);
}
.process-band .section-head p {
  color: #B4C9D9;
}
.process-band .eyebrow {
  color: #FFB37D;
}
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 10px;
}
.process-step {
  border-left: 1px solid rgba(255,255,255,.18);
  padding: 10px 0 10px 24px;
  position: relative;
}
.process-step::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 24px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(239,117,34,.22);
}
.step-no {
  display: block;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .08em;
  color: #7FAAC5;
  margin-bottom: 14px;
}
.process-step h3 {
  font-size: 18px;
  margin: 0 0 8px;
}
.process-step p {
  font-size: 14px;
  line-height: 1.7;
  color: #B4C9D9;
  margin: 0;
}

.scenario-section {
  padding: 96px 0;
  background: var(--white);
}
.scenario-list {
  display: grid;
  gap: 40px;
}
.scenario-card {
  display: flex;
  background: var(--primary-soft);
  border: 1px solid #E3EDF5;
  border-radius: 24px;
  overflow: hidden;
}
.scenario-card.reverse .scenario-media {
  order: 2;
}
.scenario-text {
  flex: 1;
  padding: 56px 56px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.scenario-label {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .06em;
  color: var(--accent);
  margin-bottom: 12px;
}
.scenario-text h3 {
  font-size: 26px;
  color: var(--text);
  margin: 0 0 16px;
  line-height: 1.4;
  font-weight: 800;
}
.scenario-text p {
  font-size: 16px;
  color: var(--muted);
  margin: 0 0 20px;
  line-height: 1.85;
}
.scenario-points {
  display: grid;
  gap: 10px;
}
.scenario-points li {
  position: relative;
  padding-left: 24px;
  color: var(--text);
  font-size: 15px;
}
.scenario-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
}
.scenario-media {
  width: 42%;
  position: relative;
  overflow: hidden;
  min-height: 360px;
}
.scenario-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
  transition: transform .55s ease;
}
.scenario-card:hover .scenario-media img {
  transform: scale(1.04);
}

.faq-section {
  padding: 96px 0 80px;
  background: var(--primary-soft);
  border-top: 1px solid #E1EBF3;
  border-bottom: 1px solid #E1EBF3;
}
.faq-layout {
  display: grid;
  grid-template-columns: .85fr 1.4fr;
  gap: 56px;
  align-items: start;
}
.faq-intro {
  background: var(--primary-dark);
  border-radius: 20px;
  color: var(--white);
  padding: 34px;
  position: sticky;
  top: 24px;
}
.faq-intro .eyebrow {
  color: #FFB37D;
}
.faq-intro h2 {
  color: var(--white);
  font-size: 28px;
  margin: 0 0 14px;
}
.faq-intro p {
  font-size: 15px;
  color: #B4C9D9;
  margin: 0 0 22px;
}
.faq-intro a {
  color: var(--white);
  text-decoration: underline;
  text-underline-offset: 4px;
  font-weight: 700;
}
.faq-list {
  display: grid;
  gap: 14px;
}
.faq-item {
  background: var(--white);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  box-shadow: 0 4px 16px rgba(16,58,87,.05);
  overflow: hidden;
}
.faq-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 24px;
  text-align: left;
}
.faq-q {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.5;
}
.faq-icon {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  display: grid;
  place-items: center;
  font-size: 20px;
  transition: transform .3s, background .3s, color .3s;
}
.faq-item.is-open .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-answer-inner {
  padding: 0 24px 22px;
  border-top: 1px dashed #E5EEF6;
  padding-top: 18px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}
.faq-item.is-open .faq-answer {
  max-height: 340px;
}

.cta-section {
  padding: 96px 0 80px;
  background: var(--white);
}
.cta-box {
  background: linear-gradient(120deg, var(--primary-dark), #174C77);
  border-radius: 26px;
  color: var(--white);
  padding: 62px 64px;
  display: flex;
  gap: 40px;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 28px 60px rgba(16,58,87,.24);
  overflow: hidden;
  position: relative;
}
.cta-box::after {
  content: "";
  position: absolute;
  right: -120px;
  top: -130px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255,255,255,.05);
}
.cta-copy {
  position: relative;
  z-index: 2;
}
.cta-copy .eyebrow {
  color: #FFB37D;
}
.cta-copy h2 {
  font-size: 32px;
  margin: 0 0 14px;
  line-height: 1.35;
}
.cta-copy p {
  margin: 0;
  color: #BFD3E2;
  font-size: 16px;
  max-width: 620px;
}
.cta-buttons {
  display: flex;
  gap: 14px;
  flex-shrink: 0;
  position: relative;
  z-index: 2;
}

.site-footer {
  background: var(--primary-dark);
  color: #D5E2EB;
  padding-top: 68px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--white);
  font-weight: 800;
  font-size: 20px;
  margin-bottom: 18px;
}
.footer-logo {
  width: 46px;
  height: 46px;
  background: var(--primary);
  color: #fff;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-size: 20px;
}
.footer-brand-name {
  font-size: 19px;
}
.footer-brand-sub {
  font-size: 12px;
  color: #9DB9CB;
  font-weight: 400;
}
.footer-about-text {
  color: #A7C2D4;
  font-size: 14px;
  line-height: 1.85;
  margin-bottom: 18px;
  max-width: 360px;
}
.footer-heading {
  color: var(--white);
  font-size: 15px;
  font-weight: 800;
  margin-bottom: 18px;
  letter-spacing: .04em;
}
.footer-links {
  display: grid;
  gap: 12px;
}
.footer-links a {
  color: #A7C2D4;
  font-size: 14px;
  transition: color .2s, padding .2s;
}
.footer-links a:hover {
  color: var(--white);
  padding-left: 4px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.14);
  margin-top: 48px;
  padding: 22px 0 30px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  color: #8FAFC3;
  font-size: 13px;
}
.footer-bottom span {
  display: inline-flex;
  align-items: center;
}

.fixed-cta-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  background: rgba(16,58,87,.96);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-top: 1px solid rgba(255,255,255,.2);
  box-shadow: 0 -8px 30px rgba(16,58,87,.2);
}
.fixed-cta-bar .fcta-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 11px 0;
}
.fcta-text {
  color: #F2F7FB;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}
.fcta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: var(--white);
  font-size: 14px;
  font-weight: 800;
  border-radius: 999px;
  padding: 10px 24px;
  white-space: nowrap;
  transition: background .2s, transform .2s;
}
.fcta-btn:hover {
  background: #E9650E;
  transform: translateY(-2px);
}
.fcta-b-spacer {
  height: 1px;
}

@media (max-width: 1024px) {
  .header-search-col {
    min-width: 220px;
  }
  .header-main {
    gap: 18px;
  }
  .brand-name {
    font-size: 18px;
  }
  .banner-inner {
    gap: 30px;
  }
  .category-banner h1 {
    font-size: 38px;
  }
  .banner-panel {
    padding: 24px;
  }
  .feature-row {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
    row-gap: 36px;
  }
  .faq-layout {
    grid-template-columns: 1fr;
  }
  .faq-intro {
    position: static;
  }
  .scenario-text {
    padding: 42px;
  }
  .cta-box {
    padding: 48px 42px;
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 800px) {
  body {
    font-size: 15px;
  }
  .container {
    padding-left: 18px;
    padding-right: 18px;
  }
  .section-block {
    padding: 56px 0;
  }
  .section-head h2 {
    font-size: 26px;
  }
  .header-main {
    display: grid;
    grid-template-columns: 1fr auto;
  }
  .header-search-col {
    grid-column: 1 / -1;
    order: 3;
    margin-top: 4px;
  }
  .header-actions {
    display: none;
  }
  .nav-toggle {
    display: block;
  }
  .nav-inner {
    justify-content: flex-end;
    min-height: 48px;
  }
  .nav-list {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 80;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 20px 40px rgba(16,58,87,.14);
    padding: 8px 20px 16px;
    gap: 0;
    flex-direction: column;
    align-items: stretch;
  }
  .nav-list.is-open {
    display: flex;
  }
  .nav-list a {
    border-bottom: 1px solid #EFF4F8;
    padding: 14px 0;
    font-size: 16px;
  }
  .nav-list li.active a::after {
    bottom: auto;
    top: 0;
    left: 0;
    height: auto;
    width: 3px;
    border-radius: 0 3px 3px 0;
  }
  .category-banner {
    padding: 40px 0 44px;
  }
  .category-banner h1 {
    font-size: 34px;
  }
  .banner-inner {
    flex-direction: column;
  }
  .banner-panel {
    width: 100%;
  }
  .index-grid-inner {
    flex-direction: column;
  }
  .index-tree {
    flex: 1;
  }
  .preview-card {
    flex-direction: column;
  }
  .preview-thumb {
    width: 100%;
    height: 200px;
  }
  .preview-body {
    padding: 24px 24px 26px;
  }
  .scenario-card {
    flex-direction: column;
  }
  .scenario-card.reverse .scenario-media {
    order: 1;
  }
  .scenario-media {
    width: 100%;
    min-height: 240px;
    position: relative;
  }
  .scenario-text {
    padding: 36px 28px;
  }
  .scenario-text h3 {
    font-size: 23px;
  }
  .cta-box {
    padding: 40px 28px;
  }
  .cta-buttons {
    flex-wrap: wrap;
  }
  .footer-bottom {
    flex-direction: column;
  }
  .search-submit {
    padding: 10px 18px;
  }
}

@media (max-width: 520px) {
  .header-main {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
  }
  .brand-block {
    width: auto;
  }
  .brand-logo {
    width: 44px;
    height: 44px;
    font-size: 18px;
    border-radius: 12px;
  }
  .brand-name {
    font-size: 17px;
  }
  .search-form {
    border-radius: 14px;
    padding: 6px 6px 6px 14px;
  }
  .search-submit {
    border-radius: 10px;
    padding: 10px 14px;
    font-size: 13px;
  }
  .category-banner h1 {
    font-size: 29px;
  }
  .banner-text {
    font-size: 15px;
  }
  .feature-row {
    grid-template-columns: 1fr;
  }
  .process-grid {
    grid-template-columns: 1fr;
  }
  .index-tree {
    padding: 20px;
  }
  .index-item h3 {
    font-size: 16px;
  }
  .preview-body h3 {
    font-size: 19px;
  }
  .faq-q {
    font-size: 15px;
  }
  .fcta-text {
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .fcta-btn {
    padding: 10px 18px;
    font-size: 13px;
  }
  .footer-bottom {
    padding-bottom: 90px;
  }
}