/* roulang page: index */
:root {
            --primary: #2E7E8C;
            --primary-dark: #256774;
            --primary-light: #E3F0F2;
            --accent: #D9A441;
            --accent-dark: #C08D2F;
            --bg: #F7F9FA;
            --surface: #FFFFFF;
            --text-main: #1C2B33;
            --text-secondary: #5C6B73;
            --border: #E7EBEF;
            --shadow-sm: 0 2px 12px rgba(46, 126, 140, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 24px rgba(46, 126, 140, 0.10), 0 2px 6px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 12px 32px rgba(46, 126, 140, 0.12), 0 4px 12px rgba(0, 0, 0, 0.06);
            --radius: 16px;
            --radius-lg: 20px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg);
            color: var(--text-main);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            min-height: 100vh;
        }

        h1, h2, h3, h4, h5, h6, p, ul, ol, figure, blockquote {
            margin: 0;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }

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

        .container-xl {
            width: min(1240px, 100% - 48px);
            margin-inline: auto;
        }

        .section-space {
            padding: 88px 0;
        }

        @media (max-width: 767px) {
            .section-space {
                padding: 64px 0;
            }
            .container-xl {
                width: calc(100% - 40px);
            }
        }

        .card-hover {
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
        }

        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(46, 126, 140, 0.18);
        }

        .nav-link {
            position: relative;
            padding: 10px 4px 6px;
            font-size: 15px;
            font-weight: 500;
            color: #42525B;
            transition: color .2s ease;
        }

        .nav-link:hover {
            color: var(--primary);
        }

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

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 10px 20px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 15px;
            border: 1px solid transparent;
            cursor: pointer;
            transition: background .2s ease, box-shadow .2s ease, transform .2s ease;
            box-shadow: 0 4px 12px rgba(46, 126, 140, .14);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 8px 20px rgba(46, 126, 140, .2);
            transform: translateY(-1px);
        }

        .btn-primary:focus-visible,
        .btn-sand:focus-visible,
        .btn-outline:focus-visible,
        .btn-white:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(46, 126, 140, .18);
        }

        .btn-sand {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--accent);
            color: #1C2B33;
            padding: 10px 20px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 15px;
            border: 1px solid transparent;
            cursor: pointer;
            transition: background .2s ease, box-shadow .2s ease, transform .2s ease;
        }

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

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--primary);
            color: var(--primary);
            border-radius: 12px;
            padding: 10px 20px;
            font-weight: 600;
            font-size: 15px;
            background: transparent;
            cursor: pointer;
            transition: background .2s ease, border-color .2s ease, color .2s ease;
        }

        .btn-outline:hover {
            background: var(--primary-light);
        }

        .btn-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #fff;
            color: var(--primary);
            border-radius: 12px;
            padding: 10px 22px;
            font-weight: 600;
            font-size: 15px;
            border: 1px solid rgba(255, 255, 255, .9);
            cursor: pointer;
            transition: transform .2s ease, box-shadow .2s ease;
        }

        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, .12);
        }

        .btn-outline-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(255, 255, 255, .8);
            color: #fff;
            border-radius: 12px;
            padding: 10px 22px;
            font-weight: 600;
            font-size: 15px;
            background: rgba(255, 255, 255, .05);
            cursor: pointer;
            transition: background .2s ease, transform .2s ease;
        }

        .btn-outline-white:hover {
            background: rgba(255, 255, 255, .16);
            transform: translateY(-1px);
        }

        .tag {
            display: inline-flex;
            align-items: center;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 999px;
        }

        .card {
            background: #fff;
            border: 1px solid #EDF1F4;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
        }

        .field {
            width: 100%;
            padding: 11px 14px;
            background: var(--bg);
            border: 1px solid #E1E7EB;
            border-radius: 12px;
            font-size: 14px;
            color: var(--text-main);
            transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
        }

        .field:focus {
            outline: none;
            background: #fff;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(46, 126, 140, .12);
        }

        .field::placeholder {
            color: #9AA7AD;
        }

        .faq-card details {
            border-bottom: 1px solid var(--border);
        }

        .faq-card details[open] summary {
            color: var(--primary);
        }

        .faq-card summary {
            cursor: pointer;
            list-style: none;
            font-size: 16px;
            font-weight: 600;
            padding: 18px 34px 18px 4px;
            position: relative;
            color: var(--text-main);
            transition: color .2s ease;
        }

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

        .faq-card summary::after {
            content: '';
            position: absolute;
            right: 4px;
            top: 50%;
            width: 9px;
            height: 9px;
            border-right: 2px solid #9AA7AD;
            border-bottom: 2px solid #9AA7AD;
            transform: translateY(-70%) rotate(45deg);
            transition: transform .25s ease, border-color .25s ease;
        }

        .faq-card details[open] summary::after {
            transform: translateY(-30%) rotate(-135deg);
            border-color: var(--primary);
        }

        .faq-card .faq-body {
            padding: 0 32px 20px 4px;
            color: var(--text-secondary);
            font-size: 15px;
        }

        .wave-line {
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            width: 100%;
            opacity: .85;
            pointer-events: none;
        }

        .hero-dot {
            background-image: radial-gradient(rgba(46, 126, 140, .12) 1.4px, transparent 1.4px);
            background-size: 20px 20px;
        }

        .photo-card {
            box-shadow: 0 20px 50px rgba(46, 126, 140, .18);
        }

        .value-block + .value-block {
            border-top: 1px solid rgba(255, 255, 255, .12);
        }

        .check-list li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 10px;
        }

        .check-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 7px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--primary-light);
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%232E7E8C' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3.5 8.5l3 3 6-7'/%3E%3C/svg%3E");
            background-size: 10px;
            background-position: center;
            background-repeat: no-repeat;
        }

        .news-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-clamp-3 {
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .nav-header {
            backdrop-filter: blur(14px);
            background: rgba(255, 255, 255, .88);
            transition: box-shadow .3s ease;
        }

        .nav-header.scrolled {
            box-shadow: 0 8px 24px rgba(28, 43, 51, .05);
        }

        .mobile-menu {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease;
        }

        .mobile-menu.open {
            max-height: 520px;
        }

/* roulang page: category1 */
:root {
  --primary: #2E7E8C;
  --primary-dark: #256774;
  --primary-deep: #1F4C5C;
  --accent: #D9A441;
  --accent-dark: #C08D2F;
  --bg: #F7F9FA;
  --surface: #FFFFFF;
  --text-main: #1C2B33;
  --text-secondary: #5C6B73;
  --border: #E7EBEF;
  --shadow-sm: 0 2px 12px rgba(46,126,140,.06), 0 1px 3px rgba(0,0,0,.04);
  --shadow-lg: 0 12px 32px rgba(46,126,140,.12), 0 4px 12px rgba(0,0,0,.08);
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text-main);
  line-height: 1.75;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
*,
*::before,
*::after {
  box-sizing: border-box;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  display: block;
}
button,
input {
  font: inherit;
}
.container-xl {
  max-width: 1280px;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}
section[id] {
  scroll-margin-top: 110px;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  width: 100%;
  background: rgba(255, 255, 255, .9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .25s ease;
}
.site-header.is-scrolled {
  box-shadow: 0 8px 28px rgba(46, 126, 140, .08);
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 8px 2px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color .15s ease;
}
.nav-link:hover {
  color: var(--primary-dark);
}
.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  border-radius: 999px;
  background: var(--primary);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  border: 1px solid transparent;
  transition: all .2s ease;
  cursor: pointer;
}
.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px rgba(46, 126, 140, .16);
}
.btn-sm {
  padding: 7px 14px;
  font-size: 14px;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(46, 126, 140, .2);
}
.btn-accent {
  background: var(--accent);
  color: #1C2B33;
}
.btn-accent:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 22px rgba(217, 164, 65, .25);
}
.btn-outline {
  border-color: var(--primary);
  color: var(--primary);
  background: transparent;
}
.btn-outline:hover {
  background: var(--mist);
  transform: translateY(-2px);
}
.btn-outline-light {
  border-color: rgba(255, 255, 255, .8);
  color: #fff;
  background: transparent;
}
.btn-outline-light:hover {
  background: rgba(255, 255, 255, .12);
  border-color: #fff;
}
.btn-ghost {
  color: var(--text-secondary);
  background: transparent;
}
.btn-ghost:hover {
  color: var(--primary-dark);
  background: rgba(46, 126, 140, .08);
}
.page-hero {
  position: relative;
  overflow: hidden;
  padding: 64px 0 56px;
  background:
    radial-gradient(circle at 14% 18%, rgba(46, 126, 140, .1), transparent 22%),
    radial-gradient(circle at 88% 8%, rgba(217, 164, 65, .14), transparent 24%),
    linear-gradient(180deg, #E9F3F5 0%, #F7F9FA 100%);
  border-bottom: 1px solid rgba(46, 126, 140, .1);
}
.page-hero .wave-divider {
  position: absolute;
  right: -60px;
  bottom: -28px;
  color: rgba(46, 126, 140, .08);
  pointer-events: none;
}
.hero-h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
  font-weight: 700;
  color: var(--text-main);
  margin: 12px 0 18px;
}
.hero-sub {
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 0 24px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}
.hero-meta li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, .8);
  border: 1px solid rgba(46, 126, 140, .14);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  color: var(--primary-dark);
  font-weight: 500;
}
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-size: 13px;
  color: var(--text-secondary);
}
.breadcrumbs a {
  color: var(--text-secondary);
  transition: color .15s;
}
.breadcrumbs a:hover {
  color: var(--primary);
}
.breadcrumbs span[aria-current="page"] {
  color: var(--primary-dark);
  font-weight: 600;
}
.content-card {
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(231, 235, 239, .8);
  border-radius: 20px;
  padding: 28px;
}
.channel-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 22px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .25s ease, transform .25s ease;
}
.channel-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.channel-card .icon-block {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: var(--mist);
  color: var(--primary);
}
.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: #FFF3E0;
  color: #B1852F;
  border-radius: 8px;
  padding: 3px 8px;
  font-size: 12px;
  font-weight: 600;
}
.scene-card {
  background: #fff;
  border-radius: 16px;
  padding: 24px;
  border-left: 4px solid var(--accent);
  box-shadow: var(--shadow-sm);
}
.step-timeline {
  position: relative;
  padding-left: 44px;
}
.step-timeline::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 20px;
  bottom: 20px;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary), rgba(46, 126, 140, .14));
}
.step-timeline-item {
  position: relative;
  margin-bottom: 28px;
}
.step-timeline-item:last-child {
  margin-bottom: 0;
}
.step-timeline-item .step-num {
  position: absolute;
  left: -44px;
  top: 2px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  box-shadow: 0 0 0 5px rgba(46, 126, 140, .14);
}
.note-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.note-list li {
  position: relative;
  padding: 12px 0 12px 28px;
  color: var(--text-main);
  border-bottom: 1px dashed var(--border);
}
.note-list li:last-child {
  border-bottom: 0;
}
.note-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: rgba(217, 164, 65, .25);
  border: 2px solid var(--accent);
}
.toc-card {
  position: sticky;
  top: 120px;
  border-radius: 16px;
  padding: 20px;
  background: rgba(255, 255, 255, .92);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  font-size: 14px;
}
.toc-title {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--text-secondary);
  margin: 0 0 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.toc-link {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 8px;
  color: var(--text-secondary);
  margin-bottom: 2px;
  transition: all .15s;
}
.toc-link:hover {
  color: var(--primary);
  background: var(--mist);
}
.toc-link::before {
  content: "·";
  color: var(--primary);
  font-weight: 700;
}
.faq-list {
  margin-top: 8px;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color .18s ease, box-shadow .18s;
}
.faq-item[open] {
  border-color: rgba(46, 126, 140, .3);
  box-shadow: var(--shadow-sm);
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 18px;
  color: var(--text-main);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  list-style: none;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary:focus-visible {
  outline: none;
  background: rgba(46, 126, 140, .06);
}
.faq-item .faq-arrow {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--mist);
  color: var(--primary);
  transition: transform .2s ease;
}
.faq-item[open] .faq-arrow {
  transform: rotate(45deg);
}
.faq-item .faq-copy {
  padding: 0 18px 14px;
}
.faq-item .faq-copy p {
  margin: 0 0 10px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.9;
}
.cta-band {
  position: relative;
  overflow: hidden;
  background: var(--primary-deep);
  color: #fff;
}
.cta-band::after {
  content: "";
  position: absolute;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: rgba(217, 164, 65, .1);
  right: 80px;
  bottom: -150px;
  pointer-events: none;
}
#mobileMenu {
  display: none;
}
#mobileMenu.open {
  display: block;
  position: absolute;
  inset: 100% 0 auto 0;
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 20px 40px rgba(23, 52, 61, .1);
  padding: 18px 24px 22px;
}
.mobile-nav-link {
  display: block;
  padding: 12px 4px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-main);
  border-bottom: 1px solid #EEF2F4;
}
.mobile-nav-link:hover {
  color: var(--primary);
}
.mobile-nav-link.active {
  color: var(--primary);
  font-weight: 700;
}
.footer-link:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}
@media (max-width: 640px) {
  .container-xl {
    padding-left: 18px;
    padding-right: 18px;
  }
  .page-hero {
    padding: 44px 0 40px;
  }
  .content-card {
    padding: 20px;
  }
  .hero-meta li {
    font-size: 12px;
  }
}

/* roulang page: article */
:root {
            --primary: #2E7E8C;
            --primary-dark: #256774;
            --primary-light: #E3F0F2;
            --accent: #D9A441;
            --accent-dark: #C08D2F;
            --bg: #F7F9FA;
            --surface: #FFFFFF;
            --text-main: #1C2B33;
            --text-secondary: #5C6B73;
            --border: #E7EBEF;
            --dark-teal: #163B46;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            min-height: 100vh;
            background-color: var(--bg);
            color: var(--text-main);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(46, 126, 140, 0.25);
            outline-offset: 2px;
        }

        .container-xl {
            width: 100%;
            max-width: 1280px;
            margin-inline: auto;
        }

        .nav-link {
            position: relative;
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            letter-spacing: 0.01em;
            padding: 0.25rem 0.125rem;
            transition: color 150ms ease;
        }

        .nav-link:hover {
            color: var(--primary);
        }

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

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -8px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 0.65rem;
            background: var(--primary);
            color: #fff;
            font-size: 14.5px;
            font-weight: 600;
            letter-spacing: 0.015em;
            padding: 0.6rem 1.1rem;
            transition: background 150ms ease, box-shadow 150ms ease, transform 150ms ease;
            box-shadow: 0 8px 20px rgba(46, 126, 140, 0.15);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 12px 26px rgba(46, 126, 140, 0.2);
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1.5px solid rgba(255, 255, 255, 0.75);
            color: #fff;
            border-radius: 0.65rem;
            font-size: 14.5px;
            font-weight: 600;
            padding: 0.55rem 1.1rem;
            transition: all 150ms ease;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1.5px solid var(--primary);
            color: var(--primary);
            background: #fff;
            border-radius: 0.65rem;
            font-size: 14.5px;
            font-weight: 600;
            padding: 0.55rem 1.1rem;
            transition: all 150ms ease;
        }

        .btn-outline:hover {
            background: var(--primary-light);
            border-color: var(--primary-dark);
            color: var(--primary-dark);
        }

        .site-header {
            background: rgba(255, 255, 255, 0.92);
            border-bottom: 1px solid var(--border);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: box-shadow 180ms ease;
        }

        .site-header.header-scrolled {
            box-shadow: 0 8px 24px rgba(18, 44, 54, 0.06);
        }

        .info-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 1rem;
            transition: transform 180ms ease, box-shadow 180ms ease;
        }

        .info-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 14px 34px rgba(46, 126, 140, 0.12);
        }

        .form-search {
            background: #F7F9FA;
            border: 1px solid var(--border);
            border-radius: 0.6rem;
            transition: border-color 150ms ease, box-shadow 150ms ease, background 150ms ease;
        }

        .form-search:focus-within {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(46, 126, 140, 0.08);
        }

        .article-body {
            font-size: 16px;
            line-height: 1.95;
            color: #2c3e49;
        }

        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.5;
            margin: 1.7em 0 0.65em;
            padding-bottom: 0.4em;
            border-bottom: 1px solid var(--border);
            color: var(--dark-teal);
            scroll-margin-top: 6rem;
        }

        .article-body h3 {
            font-size: 19px;
            font-weight: 600;
            margin: 1.4em 0 0.55em;
            color: #21414d;
            line-height: 1.6;
            scroll-margin-top: 6rem;
        }

        .article-body p {
            margin: 0 0 1.1em;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 1.25em;
            padding-left: 1.4rem;
        }

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

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

        .article-body li {
            margin-bottom: 0.45em;
        }

        .article-body a {
            color: var(--primary-dark);
            text-decoration-color: rgba(46, 126, 140, 0.4);
            text-decoration-line: underline;
            text-underline-offset: 3px;
            transition: text-decoration-color 150ms ease, color 150ms ease;
        }

        .article-body a:hover {
            color: var(--primary);
            text-decoration-color: var(--primary);
        }

        .article-body blockquote {
            margin: 1.4em 0;
            padding: 0.9rem 1.2rem;
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            border-radius: 0.5rem 1rem 1rem 0.5rem;
            color: #29424f;
        }

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

        .article-body img {
            border-radius: 1rem;
            margin: 1.4rem 0;
        }

        .article-body pre {
            background: #12262e;
            color: #e6edf0;
            border-radius: 0.75rem;
            overflow-x: auto;
            padding: 1rem 1.25rem;
            font-size: 14px;
            line-height: 1.7;
            margin: 1.25em 0;
        }

        .article-body code {
            background: #eef3f4;
            padding: 0.15rem 0.4rem;
            border-radius: 0.35rem;
            font-size: 0.9em;
        }

        .article-body pre code {
            background: transparent;
            padding: 0;
            color: inherit;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.25em 0;
            font-size: 15px;
        }

        .article-body th,
        .article-body td {
            border: 1px solid var(--border);
            padding: 0.6rem 0.8rem;
            text-align: left;
        }

        .article-body th {
            background: #f4f8f9;
            font-weight: 600;
        }

        .tag-chip {
            display: inline-flex;
            align-items: center;
            border-radius: 999px;
            background: #EDF4F5;
            color: #3b6a74;
            font-size: 13px;
            padding: 0.25rem 0.75rem;
            line-height: 1.5;
            transition: background 150ms ease, color 150ms ease;
        }

        .tag-chip:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }

        .footer-column h3 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            letter-spacing: 0.03em;
        }

        .footer-column ul a {
            color: rgba(255, 255, 255, 0.6);
            transition: color 150ms ease;
        }

        .footer-column ul a:hover {
            color: #F1C870;
        }

        @media (max-width: 767px) {
            .article-body h2 {
                font-size: 20px;
            }
            .article-body h3 {
                font-size: 17px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2E7E8C;
            --primary-dark: #256774;
            --primary-light: #E3F0F2;
            --accent: #D9A441;
            --accent-dark: #C08D2F;
            --bg: #F7F9FA;
            --surface: #FFFFFF;
            --text-main: #1C2B33;
            --text-secondary: #5C6B73;
            --border: #E7EBEF;
            --shadow-sm: 0 2px 12px rgba(46, 126, 140, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 24px rgba(46, 126, 140, 0.1), 0 2px 6px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 12px 32px rgba(46, 126, 140, 0.14), 0 4px 10px rgba(0, 0, 0, 0.06);
            --radius: 16px;
            --radius-lg: 24px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
            background: var(--bg);
            color: var(--text-main);
            line-height: 1.75;
            min-height: 100vh;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        h1,
        h2,
        h3,
        h4 {
            margin: 0;
            font-weight: 600;
            line-height: 1.3;
            letter-spacing: -0.02em;
        }
        p {
            margin: 0;
        }
        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        textarea {
            font: inherit;
            color: inherit;
        }
        .container-xl {
            max-width: 1180px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section-space {
            padding: 72px 0;
        }
        .section-title {
            font-size: clamp(1.5rem, 2.6vw, 2.1rem);
            color: var(--text-main);
            font-weight: 700;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--text-secondary);
            margin-top: 8px;
            max-width: 560px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            line-height: 1.6;
        }
        .card-hover {
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        }
        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(46, 126, 140, 0.15);
        }
        .nav-link {
            font-size: 15px;
            color: #33424b;
            font-weight: 500;
            padding: 6px 2px 8px;
            position: relative;
            transition: color 0.2s ease;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link.active {
            color: var(--primary);
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 11px 22px;
            border-radius: 12px;
            transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
            cursor: pointer;
            border: none;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(46, 126, 140, 0.22);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            font-weight: 600;
            font-size: 15px;
            padding: 10px 22px;
            border-radius: 12px;
            transition: background 0.2s ease, color 0.2s ease;
            cursor: pointer;
        }
        .btn-outline:hover {
            background: var(--primary-light);
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
            font-weight: 600;
            padding: 11px 22px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: background 0.2s ease, transform 0.2s ease;
            border: none;
            cursor: pointer;
        }
        .btn-white:hover {
            background: #f1f7f8;
            transform: translateY(-1px);
        }
        .btn-outline-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.7);
            font-weight: 600;
            font-size: 15px;
            padding: 10px 22px;
            border-radius: 12px;
            transition: background 0.2s ease, border-color 0.2s ease;
            cursor: pointer;
        }
        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
        }
        .input-base {
            width: 100%;
            border: 1px solid #dce3e7;
            border-radius: 12px;
            padding: 10px 14px;
            font-size: 15px;
            background: #fff;
            color: var(--text-main);
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            outline: none;
        }
        .input-base:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(46, 126, 140, 0.12);
        }
        details.faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 0;
            overflow: hidden;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        details.faq-item:hover {
            border-color: rgba(46, 126, 140, 0.2);
        }
        details.faq-item summary {
            cursor: pointer;
            padding: 18px 20px;
            font-weight: 600;
            font-size: 15px;
            color: var(--text-main);
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            outline: none;
            transition: color 0.2s ease;
        }
        details.faq-item summary::-webkit-details-marker {
            display: none;
        }
        details.faq-item summary .chevron {
            color: var(--text-secondary);
            transition: transform 0.3s ease, color 0.2s ease;
            flex-shrink: 0;
        }
        details.faq-item[open] summary .chevron {
            transform: rotate(180deg);
            color: var(--primary);
        }
        details.faq-item[open] summary {
            color: var(--primary);
            border-bottom: 1px solid var(--border);
        }
        details.faq-item .faq-body {
            padding: 4px 20px 18px;
            color: var(--text-secondary);
            font-size: 14.5px;
            line-height: 1.8;
        }
        .help-tag {
            display: inline-block;
            background: rgba(217, 164, 65, 0.14);
            color: #a67516;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 999px;
            letter-spacing: 0.03em;
        }
        .mobile-menu-panel {
            display: none;
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 14px 20px 20px;
        }
        .mobile-menu-panel.open {
            display: block;
        }
        .hero-heading {
            font-size: clamp(2rem, 4.2vw, 3rem);
        }
        .eyebrow-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(46, 126, 140, 0.1);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 999px;
        }
        @media (max-width: 1023px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-toggle {
                display: inline-flex !important;
            }
            .section-space {
                padding: 56px 0;
            }
        }
        @media (max-width: 639px) {
            .container-xl {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section-space {
                padding: 48px 0;
            }
            .hero-heading {
                font-size: 2rem;
            }
        }
        :focus-visible {
            outline: 4px solid rgba(46, 126, 140, 0.18);
            outline-offset: 2px;
        }
        .faq-wrap {
            background: var(--bg);
        }
        .bg-hero-pattern {
            background-image: linear-gradient(135deg, rgba(227, 240, 242, 0.98) 0%, rgba(247, 249, 250, 0.85) 50%, rgba(217, 164, 65, 0.08) 100%), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
        }

/* roulang page: category3 */
:root {
            --primary: #2E7E8C;
            --primary-dark: #256774;
            --primary-light: #E3F0F2;
            --accent: #D9A441;
            --accent-dark: #C08D2F;
            --bg: #F7F9FA;
            --surface: #FFFFFF;
            --text-main: #1C2B33;
            --text-secondary: #5C6B73;
            --border: #E7EBEF;
            --radius: 16px;
            --shadow-sm: 0 2px 12px rgba(46, 126, 140, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 12px 32px rgba(46, 126, 140, 0.12), 0 4px 12px rgba(0, 0, 0, 0.06);
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            min-height: 100vh;
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Arial", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            background: var(--bg);
            color: var(--text-main);
            -webkit-font-smoothing: antialiased;
        }

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

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

        a {
            color: inherit;
            text-decoration: none;
        }

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

        button {
            cursor: pointer;
            background: none;
            border: 0;
            padding: 0;
        }

        h1,
        h2,
        h3,
        p,
        ul,
        ol {
            margin: 0;
            padding: 0;
        }

        ul,
        ol {
            list-style: none;
        }

        .container-xl {
            width: 100%;
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow 0.2s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 10px 26px rgba(31, 76, 92, 0.08);
        }

        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            height: 40px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: color 0.15s ease;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 3px;
            height: 2px;
            border-radius: 99px;
            background: transparent;
            transform: scaleX(0.6);
            opacity: 0;
            transition: all 0.18s ease;
        }

        .nav-link:hover {
            color: var(--primary);
        }

        .nav-link:hover::after {
            opacity: 0.6;
            transform: scaleX(0.8);
            background: var(--primary);
        }

        .nav-link.active {
            color: var(--primary);
        }

        .nav-link.active::after {
            transform: scaleX(1);
            opacity: 1;
            background: var(--primary);
        }

        .header-search {
            position: relative;
            display: flex;
            align-items: center;
        }

        .header-search svg {
            position: absolute;
            left: 12px;
            width: 17px;
            height: 17px;
            color: #9AA7AD;
            pointer-events: none;
        }

        .header-search input {
            width: 190px;
            height: 40px;
            padding: 0 14px 0 38px;
            border-radius: 12px;
            border: 1px solid var(--border);
            background: var(--bg);
            font-size: 14px;
            transition: border 0.18s ease, box-shadow 0.18s ease;
            outline: none;
        }

        .header-search input::placeholder {
            color: #9AA7AD;
        }

        .header-search input:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(46, 126, 140, 0.12);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            padding: 12px 22px;
            border: 1px solid transparent;
            transition: all 0.16s ease;
            white-space: nowrap;
        }

        .btn:focus-visible,
        .header-search input:focus-visible,
        .faq-item summary:focus-visible {
            outline: 0;
            box-shadow: 0 0 0 4px rgba(46, 126, 140, 0.2);
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary-light);
        }

        .btn-white {
            background: #fff;
            color: var(--text-main);
            border-color: #fff;
        }

        .btn-white:hover {
            background: #f2f6f7;
        }

        .btn-outline-white {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.8);
        }

        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
        }

        .mobile-menu {
            display: none;
            background: #fff;
            border-top: 1px solid var(--border);
            box-shadow: 0 14px 24px rgba(0, 0, 0, 0.06);
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu .nav-link {
            display: block;
            height: auto;
            padding: 12px 14px;
            border-radius: 12px;
        }

        .mobile-menu .nav-link::after {
            display: none;
        }

        .page-hero {
            position: relative;
            overflow: hidden;
            padding: 72px 0 64px;
            background:
                linear-gradient(135deg, rgba(227, 240, 242, 0.96) 0%, rgba(247, 249, 250, 0.94) 52%, rgba(217, 164, 65, 0.16) 100%),
                url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
        }

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

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color 0.15s ease;
        }

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

        .breadcrumb li {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb li + li::before {
            content: "/";
            color: #B1BCC2;
            font-size: 13px;
        }

        .page-hero h1 {
            margin-top: 18px;
            font-size: clamp(2rem, 4vw, 3rem);
            line-height: 1.2;
            letter-spacing: -0.025em;
            font-weight: 700;
            color: var(--text-main);
        }

        .page-hero p {
            margin-top: 14px;
            max-width: 680px;
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 28px;
        }

        .section-pad {
            padding: 76px 0;
        }

        .section-pad-sm {
            padding: 52px 0;
        }

        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.04em;
            padding: 7px 14px;
            border-radius: 999px;
        }

        .section-title {
            margin-top: 14px;
            font-size: clamp(1.5rem, 2.6vw, 2.1rem);
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.35;
            letter-spacing: -0.02em;
        }

        .section-desc {
            margin-top: 12px;
            max-width: 620px;
            color: var(--text-secondary);
            font-size: 15px;
        }

        .card {
            background: var(--surface);
            border: 1px solid #F0F3F5;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .info-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 46px;
            height: 46px;
            flex: 0 0 46px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
        }

        .stat-band {
            background: var(--primary);
            color: #fff;
            border-radius: 20px;
            position: relative;
            overflow: hidden;
        }

        .stat-band::after {
            content: "";
            position: absolute;
            right: -60px;
            bottom: -80px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
        }

        .channel-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 36px;
        }

        .channel-card {
            padding: 30px 26px 28px;
        }

        .channel-card h3 {
            margin-top: 18px;
            font-size: 19px;
            font-weight: 700;
            line-height: 1.4;
        }

        .channel-card p {
            margin-top: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        .scene-item {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            margin-bottom: 28px;
        }

        .scene-item:last-child {
            margin-bottom: 0;
        }

        .step-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 34px;
        }

        .step-card {
            position: relative;
            border-radius: 18px;
            background: #fff;
            padding: 26px 22px 24px;
            border: 1px solid #F0F3F5;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 32px;
            height: 32px;
            padding: 0 8px;
            background: var(--primary-light);
            border-radius: 12px;
            font-weight: 700;
            font-size: 14px;
            color: var(--primary);
        }

        .step-card h3 {
            margin-top: 14px;
            font-size: 17px;
            font-weight: 600;
            line-height: 1.4;
        }

        .step-card p {
            margin-top: 6px;
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        .update-wrap {
            background: #fff;
            border: 1px solid #F0F3F5;
            border-radius: 20px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .update-list-item {
            display: flex;
            flex-direction: column;
            gap: 8px;
            padding: 26px 30px;
            border-bottom: 1px solid #EDF1F3;
        }

        .update-list-item:last-child {
            border-bottom: 0;
        }

        .update-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 12px;
            border-radius: 99px;
            font-size: 12.5px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
        }

        .update-tag.sand {
            color: var(--accent-dark);
            background: #F9EED9;
        }

        .update-list-item h3 {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.5;
        }

        .update-list-item p {
            color: var(--text-secondary);
            font-size: 14px;
            max-width: 980px;
            line-height: 1.8;
        }

        .update-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: #83929A;
        }

        .update-meta a {
            color: var(--primary);
            font-weight: 600;
        }

        .update-meta a:hover {
            color: var(--primary-dark);
        }

        .faq-two-col {
            display: grid;
            grid-template-columns: 0.85fr 1.15fr;
            gap: 52px;
            align-items: start;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 18px;
            box-shadow: var(--shadow-sm);
            margin-bottom: 14px;
            overflow: hidden;
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            list-style: none;
            padding: 20px 24px;
            font-weight: 600;
            color: var(--text-main);
            font-size: 15.5px;
            position: relative;
            transition: color 0.16s ease;
        }

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

        .faq-item summary:hover,
        .faq-item[open] summary {
            color: var(--primary);
        }

        .faq-arrow {
            flex: 0 0 22px;
            width: 22px;
            height: 22px;
            color: var(--text-secondary);
            transition: transform 0.2s ease, color 0.16s ease;
        }

        .faq-item[open] .faq-arrow {
            transform: rotate(90deg);
            color: var(--primary);
        }

        .faq-answer {
            padding: 0 24px 22px;
            color: var(--text-secondary);
            font-size: 14.5px;
            line-height: 1.9;
            border-top: 1px solid #F0F2F4;
            padding-top: 16px;
            margin-top: 2px;
        }

        .contact-section {
            background:
                linear-gradient(90deg, rgba(31, 76, 92, 0.97), rgba(46, 126, 140, 0.9)),
                url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
        }

        .contact-form {
            background: #fff;
            border-radius: 22px;
            padding: 30px;
            box-shadow: 0 22px 46px rgba(0, 0, 0, 0.14);
        }

        .field-label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-main);
        }

        .form-control {
            width: 100%;
            background: var(--bg);
            border: 1px solid #E2E7EA;
            border-radius: 12px;
            padding: 11px 14px;
            font-size: 14.5px;
            outline: none;
            color: var(--text-main);
            transition: border 0.16s ease, box-shadow 0.16s ease;
        }

        .form-control::placeholder {
            color: #9DAAB0;
        }

        .form-control:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(46, 126, 140, 0.12);
        }

        .lite-footer {
            background: #163B46;
        }

        .form-success {
            display: none;
            margin-top: 14px;
            padding: 12px 16px;
            border-radius: 12px;
            background: #EBF6F2;
            border: 1px solid #CBE6DE;
            color: #1F7A5C;
            font-size: 14px;
        }

        .form-success.show {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        @media (max-width: 1023px) {
            .channel-grid,
            .step-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .faq-two-col {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .page-hero {
                padding: 56px 0 48px;
            }
        }

        @media (max-width: 767px) {
            .container-xl {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section-pad {
                padding: 52px 0;
            }
            .page-hero {
                padding: 44px 0 38px;
            }
            .page-hero h1 {
                letter-spacing: -0.02em;
            }
            .page-hero p {
                font-size: 15px;
            }
            .hero-actions .btn {
                flex: 1;
            }
            .channel-grid,
            .step-list {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .contact-form {
                padding: 22px 18px;
            }
            .update-list-item {
                padding: 20px 18px;
            }
            .faq-item summary {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 14px 18px 18px;
            }
        }