/* roulang page: index */
:root {
  --primary: #1F6E6B;
  --primary-deep: #134D4A;
  --primary-light: #E3F2F0;
  --accent: #EF7A5A;
  --bg: #F7F6F2;
  --surface: #FFFFFF;
  --text: #17333A;
  --text-sub: #5D7377;
  --border: #E4E9E7;
  --radius-sm: 4px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(23, 51, 58, 0.06);
  --shadow-hover: 0 10px 28px rgba(23, 51, 58, 0.14);
  --spacing-section: 96px;
  --container-w: 1280px;
  --font-family: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  padding-bottom: calc(56px + env(safe-area-inset-bottom));
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

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

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

.text-center {
  text-align: center;
}

.viss-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font-family);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.25s ease;
  text-decoration: none;
  line-height: 1;
}

.btn:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

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

.btn-primary:hover {
  background: #f5866a;
  color: #fff;
  box-shadow: 0 6px 18px rgba(239, 122, 90, 0.35);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: 0 2px 8px rgba(239, 122, 90, 0.25);
}

.btn-secondary {
  background: transparent;
  color: var(--primary-deep);
  border-color: var(--primary-deep);
}

.btn-secondary:hover {
  background: rgba(31, 110, 107, 0.08);
  color: var(--primary-deep);
}

.btn-lg {
  height: 48px;
  padding: 0 32px;
  border-radius: 24px;
  font-size: 16px;
  font-weight: 700;
}

.btn-sm {
  height: 36px;
  padding: 0 18px;
  border-radius: 6px;
  font-size: 14px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  position: relative;
  padding-bottom: 4px;
}

.brand::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.brand:hover::after {
  transform: scaleX(1);
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: var(--primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  flex-shrink: 0;
}

.brand-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: 0.01em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.main-nav > a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  padding: 8px 4px;
  position: relative;
  transition: color 0.2s;
}

.main-nav > a:hover {
  color: var(--primary);
}

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

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

.dropdown-wrap {
  position: relative;
}

.dropdown-toggle {
  background: none;
  border: none;
  font-family: var(--font-family);
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  padding: 8px 4px;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: color 0.2s;
}

.dropdown-toggle:hover {
  color: var(--primary);
}

.dropdown-toggle.active {
  color: var(--primary);
  font-weight: 600;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 140px;
  background: var(--surface);
  border-radius: 8px;
  box-shadow: var(--shadow-hover);
  border: 1px solid var(--border);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.2s ease;
  z-index: 110;
}

.dropdown-wrap:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu a {
  display: block;
  padding: 10px 16px;
  font-size: 14px;
  color: var(--text);
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}

.dropdown-menu a:hover {
  background: var(--primary-light);
  color: var(--primary-deep);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-toggle-mobile {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  color: var(--text);
  cursor: pointer;
  padding: 8px;
}

/* ===== Mobile Tab Bar ===== */
.tabbar-mobile {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: calc(56px + env(safe-area-inset-bottom));
  background: var(--surface);
  border-top: 1px solid var(--border);
  z-index: 200;
  padding-bottom: env(safe-area-inset-bottom);
  box-shadow: 0 -4px 20px rgba(23, 51, 58, 0.06);
}

.tabbar-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  height: 56px;
}

.tabbar-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  text-decoration: none;
  color: var(--text-sub);
  font-size: 11px;
  transition: color 0.2s;
}

.tabbar-item i {
  font-size: 18px;
  line-height: 1;
}

.tabbar-item.active {
  color: var(--primary);
}

.tabbar-item.active .tabbar-icon-wrap {
  background: var(--primary-light);
}

.tabbar-icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 28px;
  border-radius: 14px;
  transition: background 0.2s;
}

@media (max-width: 1023px) {
  .main-nav {
    display: none;
  }

  .nav-toggle-mobile {
    display: block;
  }

  .header-cta .btn {
    display: none;
  }

  .tabbar-mobile {
    display: block;
  }
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 80px 0;
  background: var(--bg);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(31, 110, 107, 0.08) 0%, transparent 70%);
  z-index: 0;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}

.hero-content {
  flex: 1;
}

.hero-title {
  font-size: 40px;
  font-weight: 900;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.hero-subtitle {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-sub);
  margin-bottom: 32px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}

.hero-media {
  flex: 1;
  max-width: 480px;
  position: relative;
}

.hero-media img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-hover);
  transform: rotate(1deg);
  transition: transform 0.3s ease;
}

.hero-media:hover img {
  transform: rotate(0deg) scale(1.01);
}

.hero-badge {
  position: absolute;
  right: 16px;
  bottom: 16px;
  width: 72px;
  height: 72px;
  background: var(--surface);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-hover);
  gap: 2px;
}

.hero-badge i {
  color: var(--primary);
  font-size: 20px;
}

.hero-badge span {
  font-size: 11px;
  font-weight: 600;
  color: var(--primary-deep);
}

/* ===== Trust Strip ===== */
.trust-strip {
  background: var(--surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding: 32px 24px;
  margin: -48px 0 0;
  position: relative;
  z-index: 5;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 8px 16px;
  border-radius: 12px;
  transition: all 0.3s ease;
}

.trust-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.trust-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 20px;
  flex-shrink: 0;
}

.trust-text {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
}

.trust-text small {
  display: block;
  font-size: 12px;
  font-weight: 400;
  color: var(--text-sub);
  margin-top: 2px;
}

/* ===== Compare Table ===== */
.compare-table-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

.compare-table th,
.compare-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.compare-table thead th {
  font-size: 15px;
  font-weight: 700;
  background: #F9F9F7;
  color: var(--text);
  line-height: 48px;
  padding-top: 0;
  padding-bottom: 0;
}

.compare-table thead th.member-col {
  background: var(--primary-light);
  position: relative;
}

.compare-table thead th.member-col::after {
  content: "推荐";
  position: absolute;
  top: -1px;
  right: 12px;
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 0 0 8px 8px;
}

.compare-table tbody tr:last-child td {
  border-bottom: none;
}

.compare-table tbody tr:hover td {
  background: rgba(31, 110, 107, 0.02);
}

.compare-table .member-col {
  background: var(--primary-light);
  border-left: 3px solid var(--primary);
}

.compare-table .free-col {
  background: #FBFBFA;
}

.table-icon-ok {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  font-size: 11px;
  flex-shrink: 0;
}

.table-icon-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  background: #E0E0E0;
  color: #9E9E9E;
  border-radius: 50%;
  font-size: 11px;
  flex-shrink: 0;
}

.table-cta-row td {
  padding: 20px;
  text-align: center;
}

@media (max-width: 767px) {
  .compare-table-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .compare-table {
    min-width: 600px;
  }

  .compare-table th,
  .compare-table td {
    padding: 12px 14px;
  }

  .member-col {
    position: sticky;
    right: 0;
    background: var(--surface);
    box-shadow: -4px 0 12px rgba(23, 51, 58, 0.06);
  }
}

/* ===== Tier Cards ===== */
.tier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: center;
}

.tier-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 36px 28px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  position: relative;
  text-align: center;
}

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

.tier-card--featured {
  transform: scale(1.06);
  border-top: 4px solid var(--primary);
  box-shadow: 0 12px 36px rgba(23, 51, 58, 0.14);
  z-index: 2;
}

.tier-card--featured:hover {
  transform: scale(1.06) translateY(-4px);
}

.tier-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
}

.tier-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}

.tier-number {
  font-size: 56px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  margin-bottom: 20px;
}

.tier-number span {
  font-size: 18px;
  font-weight: 500;
  color: var(--text-sub);
  margin-left: 4px;
}

.tier-features {
  list-style: none;
  padding: 0;
  margin-bottom: 24px;
  text-align: center;
}

.tier-features li {
  font-size: 14px;
  color: var(--text-sub);
  padding: 6px 0;
}

/* ===== Preview Cards ===== */
.preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.preview-card {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: all 0.3s ease;
}

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

.preview-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.preview-card:hover img {
  transform: scale(1.02);
}

.preview-lock-overlay {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.preview-card:hover .preview-lock-overlay {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(0);
}

.preview-lock-icon {
  width: 56px;
  height: 56px;
  background: var(--surface);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-hover);
  color: var(--primary);
  font-size: 20px;
}

.preview-card--locked:hover .preview-lock-icon {
  transform: scale(0.95);
}

.preview-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 16px;
  z-index: 3;
}

.preview-tooltip {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: var(--surface);
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 8px;
  box-shadow: var(--shadow-hover);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  white-space: nowrap;
  z-index: 5;
}

.preview-card--locked:hover .preview-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* ===== FAQ Accordion ===== */
.faq-accordion {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 16px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item.active {
  border-left: 3px solid var(--primary);
  background: linear-gradient(135deg, var(--surface) 0%, var(--primary-light) 100%);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 18px 20px;
  font-family: var(--font-family);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: color 0.2s;
}

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

.faq-question i {
  font-size: 16px;
  color: var(--primary);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-question i {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 20px 16px;
}

.faq-answer p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-sub);
}

.faq-contact {
  text-align: center;
  margin-top: 24px;
  font-size: 14px;
  color: var(--text-sub);
}

.faq-contact a {
  font-weight: 600;
}

/* ===== Subscribe ===== */
.subscribe-strip {
  background: var(--surface);
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
  padding: 28px 32px;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.subscribe-strip-label {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
}

.subscribe-form {
  display: flex;
  gap: 12px;
  flex: 1;
  min-width: 280px;
}

.subscribe-form input[type="email"] {
  flex: 1;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0 16px;
  font-family: var(--font-family);
  font-size: 14px;
  color: var(--text);
  background: var(--surface);
  transition: all 0.25s ease;
  min-width: 0;
}

.subscribe-form input[type="email"]::placeholder {
  color: var(--text-sub);
}

.subscribe-form input[type="email"]:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(31, 110, 107, 0.2);
}

/* ===== CTA Banner ===== */
.cta-banner {
  background: var(--primary-deep);
  border-radius: 20px;
  padding: 56px 64px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-banner::before {
  content: "";
  position: absolute;
  bottom: -40%;
  right: -5%;
  width: 400px;
  height: 400px;
  border: 2px solid rgba(255, 255, 255, 0.08);
  border-radius: 50%;
}

.cta-banner::after {
  content: "";
  position: absolute;
  bottom: -20%;
  right: 5%;
  width: 280px;
  height: 280px;
  border: 2px solid rgba(255, 255, 255, 0.05);
  border-radius: 50%;
}

.cta-banner-content {
  position: relative;
  z-index: 1;
}

.cta-banner-title {
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  line-height: 1.4;
  margin-bottom: 8px;
}

.cta-banner-subtitle {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
}

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

/* ===== News Grid ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

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

.news-card-cover {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: #E8EDEC;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 32px;
}

.news-card-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.news-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.news-card-cat {
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 2px 10px;
  border-radius: 12px;
}

.news-card-date {
  font-size: 12px;
  color: var(--text-sub);
  font-variant-numeric: tabular-nums;
}

.news-card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 48px;
}

.news-card-summary {
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
  flex: 1;
}

.news-card-link {
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s ease;
}

.news-card-link:hover {
  gap: 8px;
}

.news-empty {
  grid-column: 1 / -1;
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 48px 24px;
  text-align: center;
  color: var(--text-sub);
  background: var(--surface);
}

.news-empty i {
  font-size: 32px;
  color: var(--border);
  margin-bottom: 12px;
}

.news-empty p {
  font-size: 14px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-deep);
  color: #A8C3C0;
  padding-top: 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand-name {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 8px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: #A8C3C0;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #A8C3C0;
  font-size: 14px;
  transition: all 0.3s ease;
}

.footer-social a:hover {
  background: var(--primary-light);
  color: var(--primary-deep);
  border-color: var(--primary-light);
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul a {
  color: #A8C3C0;
  font-size: 14px;
  text-decoration: none;
  transition: color 0.2s;
}

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

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 14px;
  color: #A8C3C0;
}

.footer-contact-item i {
  margin-top: 4px;
  color: #7FB5B0;
  font-size: 13px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copy {
  font-size: 13px;
  color: #7FB5B0;
}

/* ===== Section Header ===== */
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 40px;
  gap: 24px;
  flex-wrap: wrap;
}

.section-header h2 {
  font-size: 28px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--text);
  margin: 0;
}

.section-header .section-desc {
  font-size: 14px;
  color: var(--text-sub);
  margin-top: 8px;
}

.filter-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-links a {
  font-size: 14px;
  color: var(--text-sub);
  padding: 6px 16px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--surface);
  transition: all 0.2s ease;
  text-decoration: none;
}

.filter-links a:hover,
.filter-links a.active {
  color: var(--primary);
  border-color: var(--primary);
  background: var(--primary-light);
  font-weight: 600;
}

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  :root {
    --spacing-section: 64px;
  }

  .hero-inner {
    flex-direction: column;
    gap: 32px;
  }

  .hero-content {
    text-align: center;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-media {
    max-width: 100%;
  }

  .tier-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .tier-card {
    padding: 24px 16px;
  }

  .tier-card--featured {
    transform: scale(1.03);
  }

  .tier-card--featured:hover {
    transform: scale(1.03) translateY(-4px);
  }

  .tier-number {
    font-size: 40px;
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .cta-banner {
    padding: 40px 32px;
  }
}

@media (max-width: 767px) {
  .container {
    padding: 0 16px;
  }

  .hero {
    padding: 48px 0;
  }

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

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

  .hero-actions .btn {
    width: calc(50% - 8px);
  }

  .trust-strip {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 24px 16px;
  }

  .trust-item {
    justify-content: flex-start;
  }

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

  .tier-card--featured {
    transform: scale(1);
    order: -1;
  }

  .tier-card--featured:hover {
    transform: scale(1) translateY(-4px);
  }

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

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

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

  .subscribe-strip {
    padding: 20px 16px;
  }

  .subscribe-form {
    flex-direction: column;
    width: 100%;
  }

  .subscribe-form input[type="email"] {
    width: 100%;
    flex: none;
  }

  .subscribe-form .btn {
    width: 100%;
  }

  .cta-banner {
    flex-direction: column;
    text-align: center;
    padding: 32px 24px;
  }

  .cta-banner-title {
    font-size: 22px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .section {
    padding: 48px 0;
  }
}

@media (max-width: 520px) {
  .hero-actions {
    flex-direction: column;
  }

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

  .header-inner {
    height: 60px;
  }

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

/* roulang page: article */
:root {
  --primary: #1F6E6B;
  --primary-deep: #134D4A;
  --primary-light: #E3F2F0;
  --accent: #EF7A5A;
  --bg: #F7F6F2;
  --surface: #FFFFFF;
  --text: #17333A;
  --text-sub: #5D7377;
  --border: #E4E9E7;
  --radius-sm: 4px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(23,51,58,0.06);
  --shadow-hover: 0 10px 28px rgba(23,51,58,0.14);
  --font-sans: "Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-serif: "Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --header-h: 72px;
  --tabbar-h: 56px;
  --gap: 24px;
  --section-gap: 96px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  padding-bottom: calc(var(--tabbar-h) + env(safe-area-inset-bottom));
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--accent); }
button { font-family: inherit; border: none; cursor: pointer; }
input, textarea { font-family: inherit; }
ul, ol { list-style-position: inside; }
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.section { padding: var(--section-gap) 0; }
.section-title {
  font-size: 28px;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 32px;
  color: var(--text);
  letter-spacing: -0.01em;
}
.text-sub { color: var(--text-sub); }
.tabular-nums { font-variant-numeric: tabular-nums; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  transition: all .2s ease;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(31,110,107,.2);
}
.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-accent:hover {
  background: #f4866a;
  color: #fff;
  box-shadow: var(--shadow-hover);
  transform: translateY(-1px);
}
.btn-accent:active { transform: translateY(0); }
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: #185c59;
  color: #fff;
  box-shadow: var(--shadow-hover);
}
.btn-outline {
  background: transparent;
  border-color: var(--primary);
  color: var(--primary);
}
.btn-outline:hover {
  background: rgba(31,110,107,.08);
  color: var(--primary);
}
.btn-lg {
  height: 48px;
  padding: 0 32px;
  border-radius: 24px;
  font-size: 16px;
  font-weight: 700;
}
.btn-sm { height: 36px; padding: 0 16px; border-radius: 6px; font-size: 14px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  position: relative;
  padding-bottom: 4px;
}
.brand i {
  color: var(--primary);
  font-size: 24px;
}
.brand::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  width: 0;
  background: var(--primary);
  transition: width .2s ease;
}
.brand:hover::after { width: 100%; }
.brand:hover { color: var(--text); }
.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.main-nav > a,
.dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 42px;
  padding: 0 14px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  background: transparent;
  transition: all .2s ease;
}
.main-nav > a:hover,
.dropdown-toggle:hover {
  background: var(--primary-light);
  color: var(--primary);
}
.main-nav > a.active,
.dropdown-toggle.active {
  color: var(--primary);
  font-weight: 600;
}
.dropdown-wrap { position: relative; }
.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 160px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow-hover);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: all .2s ease;
  z-index: 50;
}
.dropdown-wrap:hover .dropdown-menu,
.dropdown-wrap:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown-menu a {
  display: block;
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 14px;
  color: var(--text);
}
.dropdown-menu a:hover {
  background: var(--primary-light);
  color: var(--primary);
}
.header-cta { flex-shrink: 0; }
.hamburger {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: transparent;
  color: var(--text);
  font-size: 20px;
  align-items: center;
  justify-content: center;
}
.hamburger:hover { background: var(--primary-light); color: var(--primary); }
.mobile-panel {
  display: none;
  position: absolute;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
  flex-direction: column;
  gap: 12px;
  box-shadow: var(--shadow-hover);
}
.mobile-panel.open { display: flex; }
.mobile-panel a {
  padding: 10px 0;
  font-size: 15px;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}
.mobile-panel a:last-of-type { border-bottom: none; }

/* Breadcrumb */
.crumb {
  padding: 24px 0 16px;
  font-size: 13px;
  color: var(--text-sub);
}
.crumb a { color: var(--text-sub); }
.crumb a:hover { color: var(--primary); }
.crumb .sep { margin: 0 8px; color: var(--border); font-weight: 700; }
.crumb .current { color: var(--text); font-weight: 500; }

/* Article header */
.article-wrap {
  max-width: 860px;
  margin: 0 auto;
  padding: 16px 0 48px;
}
.article-header {
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
}
.article-header h1 {
  font-size: 38px;
  font-weight: 900;
  line-height: 1.3;
  color: var(--text);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.article-summary {
  font-size: 16px;
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  font-size: 13px;
  color: var(--text-sub);
  font-variant-numeric: tabular-nums;
}
.article-meta i {
  margin-right: 6px;
  color: var(--primary);
}

/* Article body */
.article-body {
  max-width: 760px;
  margin: 0 auto;
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.9;
  color: var(--text);
}
.article-body h2 {
  font-family: var(--font-sans);
  font-size: 24px;
  font-weight: 800;
  line-height: 1.4;
  margin: 48px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
}
.article-body h3 {
  font-family: var(--font-sans);
  font-size: 20px;
  font-weight: 700;
  margin: 32px 0 12px;
}
.article-body p {
  margin-bottom: 20px;
}
.article-body ul,
.article-body ol {
  margin: 16px 0 24px;
  padding-left: 24px;
}
.article-body li {
  margin-bottom: 8px;
}
.article-body ul li::marker {
  color: var(--primary);
}
.article-body blockquote {
  margin: 24px 0;
  padding: 16px 20px;
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  border-radius: 0 8px 8px 0;
  color: var(--text);
}
.article-body blockquote p { margin: 0; }
.article-body img {
  border-radius: var(--radius-md);
  margin: 24px 0;
  box-shadow: var(--shadow-sm);
}
.article-body table {
  width: 100%;
  margin: 24px 0;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  font-family: var(--font-sans);
  font-size: 14px;
}
.article-body th {
  background: var(--primary-light);
  color: var(--primary-deep);
  font-weight: 600;
  text-align: left;
  padding: 12px 16px;
}
.article-body td {
  padding: 10px 16px;
  border-top: 1px solid var(--border);
}
.article-body a {
  color: var(--primary);
  border-bottom: 1px solid rgba(31,110,107,.3);
}
.article-body a:hover {
  border-bottom-color: var(--accent);
  color: var(--accent);
}
.article-body code {
  background: var(--primary-light);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 15px;
  font-family: "SFMono-Regular",Consolas,"Liberation Mono",monospace;
}

/* Not found */
.not-found-box {
  text-align: center;
  padding: 48px 24px;
  background: #fff;
  border: 1px dashed var(--border);
  border-radius: var(--radius-md);
}
.not-found-box p {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 24px;
  color: var(--text-sub);
}

/* Tags & share */
.article-tags {
  max-width: 760px;
  margin: 40px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 13px;
  color: var(--text-sub);
  transition: all .2s ease;
}
.tag:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}
.share-box {
  max-width: 760px;
  margin: 28px auto 0;
  display: flex;
  justify-content: center;
  gap: 16px;
}
.share-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text-sub);
  font-size: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all .2s ease;
}
.share-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
  transform: translateY(-2px);
}

/* Prev / Next */
.article-pn {
  max-width: 760px;
  margin: 48px auto 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.pn-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all .2s ease;
}
.pn-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.pn-card .pn-label {
  font-size: 13px;
  color: var(--text-sub);
}
.pn-card .pn-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-top: 4px;
}
.pn-card i {
  color: var(--primary);
  font-size: 18px;
}
.pn-card.next { justify-content: flex-end; text-align: right; }

/* Related */
.related-section {
  max-width: 1280px;
  margin: 64px auto 0;
  padding-top: 48px;
  border-top: 1px solid var(--border);
}
.related-section .section-title {
  font-size: 22px;
  margin-bottom: 24px;
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all .25s ease;
}
.news-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: var(--primary);
}
.news-card .cover {
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--primary-light);
}
.news-card .cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s ease;
}
.news-card:hover .cover img { transform: scale(1.03); }
.news-card .info {
  padding: 16px;
}
.news-card .meta-line {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-sub);
  margin-bottom: 10px;
  letter-spacing: .02em;
}
.news-card .cat {
  color: var(--primary);
  font-weight: 600;
}
.news-card h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card p {
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.read-more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
}
.read-more i { transition: transform .2s ease; }
.read-more:hover i { transform: translateX(4px); }

/* CTA strip */
.cta-strip {
  max-width: 1280px;
  margin: 64px auto 0;
  background: var(--primary-deep);
  border-radius: var(--radius-lg);
  padding: 28px 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  position: relative;
  overflow: hidden;
}
.cta-strip::before {
  content: "";
  position: absolute;
  right: -40px;
  top: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
}
.cta-strip::after {
  content: "";
  position: absolute;
  right: 60px;
  bottom: -90px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(255,255,255,.04);
}
.cta-strip .cta-text {
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  text-shadow: 0 2px 8px rgba(0,0,0,.15);
  position: relative;
  z-index: 1;
}
.cta-strip .cta-sub {
  color: rgba(255,255,255,.7);
  font-size: 14px;
  margin-top: 4px;
  position: relative;
  z-index: 1;
}
.cta-strip .btn {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}

/* Footer */
.site-footer {
  background: var(--primary-deep);
  color: #c7d5d3;
  margin-top: 96px;
  padding-top: 56px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand-name {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}
.footer-desc {
  font-size: 14px;
  line-height: 2;
  color: #a7bdba;
  margin-bottom: 20px;
}
.footer-social {
  display: flex;
  gap: 12px;
}
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #c7d5d3;
  font-size: 14px;
  transition: all .2s ease;
}
.footer-social a:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary-light);
}
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  margin-bottom: 16px;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  color: #a7bdba;
  font-size: 14px;
}
.footer-col ul a:hover {
  color: #fff;
}
.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 14px;
  color: #a7bdba;
}
.footer-contact-item i {
  color: var(--accent);
  width: 16px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: #8fa6a3;
}

/* Mobile TabBar */
.tabbar-mobile {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: calc(var(--tabbar-h) + env(safe-area-inset-bottom));
  padding-bottom: env(safe-area-inset-bottom);
  background: rgba(255,255,255,.98);
  border-top: 1px solid var(--border);
  z-index: 200;
  align-items: center;
  justify-content: space-around;
  box-shadow: 0 -4px 18px rgba(23,51,58,.06);
}
.tab-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  width: 70px;
  height: 100%;
  color: var(--text-sub);
  font-size: 11px;
  transition: color .2s ease;
}
.tab-item i {
  font-size: 19px;
  margin-bottom: 2px;
}
.tab-item:hover {
  color: var(--primary);
}
.tab-item.active {
  color: var(--primary);
  font-weight: 600;
}
.tab-item.active i {
  background: var(--primary-light);
  width: 40px;
  height: 28px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Foundation overrides */
.button {
  font-family: var(--font-sans);
  border-radius: 8px;
  font-weight: 600;
}
table { background: #fff; }
h1,h2,h3,h4,h5,h6 { font-family: var(--font-sans); }

/* Responsive */
@media (max-width: 1023px) {
  .main-nav, .header-cta { display: none; }
  .hamburger { display: inline-flex; }
  .site-header { position: sticky; }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  :root { --section-gap: 64px; }
}
@media (max-width: 767px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .article-header h1 { font-size: 30px; }
  .article-body { font-size: 16px; }
  .article-body h2 { font-size: 21px; }
  .article-body h3 { font-size: 18px; }
  .cta-strip { flex-direction: column; text-align: center; padding: 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .footer-brand-name { font-size: 20px; }
  .article-pn { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .tabbar-mobile { display: flex; }
  .section { padding: 48px 0; }
  .section-title { font-size: 22px; margin-bottom: 24px; }
  .crumb { padding-top: 16px; }
  .mobile-panel { top: var(--header-h); }
}
@media (max-width: 520px) {
  .brand {
    font-size: 18px;
  }
  .brand i { font-size: 20px; }
  .article-header h1 { font-size: 26px; }
  .article-summary { font-size: 14px; }
  .article-meta { gap: 12px; font-size: 12px; }
  .footer-grid { grid-template-columns: 1fr; }
}

/* roulang page: category1 */
:root {
  --primary: #1F6E6B;
  --primary-deep: #134D4A;
  --primary-light: #E3F2F0;
  --accent: #EF7A5A;
  --accent-hover: #F08566;
  --bg: #F7F6F2;
  --surface: #FFFFFF;
  --text: #17333A;
  --text-sub: #5D7377;
  --border: #E4E9E7;
  --radius: 8px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --shadow: 0 2px 8px rgba(23,51,58,0.06);
  --shadow-lg: 0 10px 28px rgba(23,51,58,0.14);
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.25s ease;
}

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

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

button {
  font-family: inherit;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 96px 0;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  position: relative;
}

.brand-logo::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.brand-logo:hover::after {
  transform: scaleX(1);
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 20px;
  font-weight: 900;
  color: var(--primary-deep);
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.brand-name span {
  color: var(--accent);
  font-weight: 700;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.main-nav > a,
.dropdown-toggle {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  background: none;
  border: 0;
  cursor: pointer;
  padding: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  position: relative;
  line-height: 1.2;
}

.main-nav > a:hover,
.main-nav > a.active,
.dropdown-toggle:hover,
.dropdown-toggle.active {
  color: var(--primary);
}

.dropdown-wrap {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 0;
  min-width: 140px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  z-index: 120;
}

.dropdown-wrap:hover .dropdown-menu,
.dropdown-wrap:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu a {
  display: block;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--text);
  border-radius: 6px;
  white-space: nowrap;
}

.dropdown-menu a:hover,
.dropdown-menu a.active {
  background: var(--primary-light);
  color: var(--primary);
}

.header-cta {
  height: 40px;
  padding: 0 20px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 700;
  background: var(--accent);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  box-shadow: none;
  transition: all 0.25s ease;
}

.header-cta:hover {
  background: var(--accent-hover);
  color: #fff;
  box-shadow: var(--shadow-lg);
  transform: translateY(-1px);
}

.menu-toggle {
  display: none;
  background: none;
  border: 0;
  font-size: 22px;
  color: var(--primary-deep);
  cursor: pointer;
  padding: 8px;
}

/* Mobile drawer */
.mobile-drawer {
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: var(--surface);
  box-shadow: var(--shadow-lg);
  padding: 16px 24px 24px;
  border-bottom: 1px solid var(--border);
  display: none;
  z-index: 190;
}

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

.mobile-drawer .drawer-title {
  font-weight: 700;
  font-size: 15px;
  color: var(--primary-deep);
  margin-bottom: 10px;
}

.mobile-drawer a {
  display: block;
  padding: 10px 0;
  font-size: 15px;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}

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

.mobile-drawer .drawer-contact {
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 0;
  color: var(--text-sub);
  font-size: 14px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 24px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 15px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.25s ease;
  line-height: 1;
  box-shadow: none;
}

.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(31, 110, 107, 0.2);
}

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

.btn-primary:hover {
  background: #2a7e79;
  color: #fff;
  box-shadow: var(--shadow-lg);
  transform: translateY(-1px);
}

.btn-primary:active,
.btn-accent:active,
.btn-outline:active,
.btn-light:active {
  transform: translateY(1px);
}

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

.btn-accent:hover {
  background: var(--accent-hover);
  color: #fff;
  box-shadow: var(--shadow-lg);
  transform: translateY(-1px);
}

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

.btn-outline:hover {
  background: rgba(31, 110, 107, 0.08);
  color: var(--primary);
}

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

.btn-light:hover {
  background: var(--primary-light);
  color: var(--primary-deep);
  box-shadow: var(--shadow);
}

.btn-lg {
  height: 48px;
  padding: 0 32px;
  border-radius: 24px;
  font-weight: 700;
}

/* Category Hero */
.category-hero {
  background: linear-gradient(135deg, rgba(31, 110, 107, 0.08) 0%, rgba(247, 246, 242, 0) 50%), var(--bg);
  padding: 96px 0 80px;
}

.category-hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 14px;
  border-radius: 20px;
  margin-bottom: 20px;
  letter-spacing: 0.04em;
}

.category-hero h1 {
  margin: 0 0 20px;
  font-size: 40px;
  line-height: 1.3;
  font-weight: 900;
  color: var(--text);
}

.category-hero .lead {
  font-size: 16px;
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 24px;
  max-width: 480px;
}

.category-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 32px;
}

.category-tags span {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-sub);
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 20px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.category-hero-media {
  position: relative;
}

.category-hero-media img {
  width: 100%;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  transform: rotate(1deg);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.category-hero-media img:hover {
  transform: rotate(0deg) scale(1.02);
  box-shadow: 0 16px 40px rgba(23, 51, 58, 0.18);
}

.hero-badge {
  position: absolute;
  right: 16px;
  bottom: 16px;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  text-align: center;
  line-height: 1.3;
}

/* Quick Stats */
.quick-stats {
  padding: 32px 0 96px;
}

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

.stat-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.stat-item:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.stat-item strong {
  display: block;
  font-size: 40px;
  line-height: 1.2;
  font-weight: 900;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.stat-item span {
  display: block;
  color: var(--text-sub);
  font-size: 14px;
  margin-top: 8px;
}

/* Section Head */
.section-head {
  margin-bottom: 48px;
  text-align: center;
}

.section-head h2 {
  font-size: 28px;
  font-weight: 800;
  margin: 0 0 10px;
  color: var(--text);
}

.section-head p {
  color: var(--text-sub);
  font-size: 15px;
  margin: 0;
}

/* Steps */
.steps-section {
  padding: 0 0 96px;
}

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

.step-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

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

.step-num {
  font-size: 34px;
  line-height: 1;
  font-weight: 900;
  color: rgba(31, 110, 107, 0.2);
  font-variant-numeric: tabular-nums;
  margin-bottom: 18px;
  display: block;
}

.step-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 10px;
  color: var(--text);
}

.step-card p {
  font-size: 14px;
  color: var(--text-sub);
  margin: 0;
  line-height: 1.7;
}

/* Media Rows */
.media-rows {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.media-row {
  display: flex;
  gap: 48px;
  align-items: center;
  margin-bottom: 48px;
}

.media-row:last-child {
  margin-bottom: 0;
}

.media-row:nth-child(even) {
  flex-direction: row-reverse;
}

.media-figure {
  flex: 1;
}

.media-figure img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.media-figure img:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

.media-body {
  flex: 1;
}

.media-body h3 {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 16px;
  color: var(--text);
}

.media-body p {
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.8;
  margin: 0;
}

/* Guide Cards */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.guide-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

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

.guide-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin: 0 auto 18px;
}

.guide-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 10px;
  color: var(--text);
}

.guide-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  margin: 0;
}

/* News Snippet */
.news-snippet {
  padding: 0 0 96px;
}

.notice-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.notice-card {
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.6;
}

.notice-card i {
  color: var(--primary);
  font-size: 20px;
  flex-shrink: 0;
}

/* FAQ */
.faq-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.faq-accordion {
  max-width: 840px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.faq-item.open {
  border-left: 3px solid var(--primary);
  background: linear-gradient(90deg, rgba(227, 242, 240, 0.7), #fff);
  box-shadow: var(--shadow);
}

.faq-toggle {
  width: 100%;
  background: transparent;
  border: 0;
  padding: 18px 16px;
  font-weight: 600;
  font-size: 15px;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  color: var(--text);
}

.faq-toggle:hover {
  color: var(--primary);
}

.faq-icon {
  color: var(--primary);
  font-size: 16px;
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-panel {
  max-height: 0;
  padding: 0 16px;
  overflow: hidden;
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.8;
  transition: max-height 0.25s ease, padding 0.25s ease;
}

.faq-item.open .faq-panel {
  max-height: 400px;
  padding: 0 16px 16px;
}

/* CTA */
.cta-banner {
  background: var(--primary-deep);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: "";
  position: absolute;
  right: -120px;
  top: -120px;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.12) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-banner::after {
  content: "";
  position: absolute;
  left: 30%;
  bottom: -180px;
  width: 320px;
  height: 320px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 50%;
}

.cta-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
  position: relative;
  z-index: 1;
}

.cta-text h2 {
  color: #fff;
  font-size: 28px;
  font-weight: 800;
  margin: 0 0 10px;
}

.cta-text p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 15px;
  margin: 0;
}

.cta-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Footer */
.site-footer {
  background: var(--primary-deep);
  color: #A6C1C8;
  padding: 64px 0 0;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand-name {
  font-size: 22px;
  font-weight: 900;
  color: #fff;
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 20px;
  max-width: 280px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.75);
  font-size: 14px;
  transition: all 0.25s ease;
}

.footer-social a:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary-light);
}

.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul a {
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
}

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

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
  word-break: break-all;
}

.footer-contact-item i {
  color: var(--accent);
  width: 16px;
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-copy {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

/* Mobile Tabbar */
.tabbar-mobile {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: #fff;
  border-top: 1px solid var(--border);
  z-index: 300;
  align-items: center;
  justify-content: space-around;
  padding-bottom: env(safe-area-inset-bottom);
}

.tab-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  color: var(--text-sub);
  font-size: 12px;
  line-height: 1.2;
  min-width: 72px;
  padding: 6px 8px;
}

.tab-icon {
  font-size: 18px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease;
}

.tab-item.active {
  color: var(--primary);
}

.tab-item.active .tab-icon {
  background: var(--primary-light);
}

/* Responsive */
@media (max-width: 1023.98px) {
  .main-nav,
  .header-cta {
    display: none;
  }

  .menu-toggle,
  .tabbar-mobile {
    display: flex;
  }

  .tabbar-mobile {
    display: flex;
  }

  body {
    padding-bottom: calc(56px + env(safe-area-inset-bottom));
  }

  .category-hero {
    padding: 64px 0 48px;
  }

  .category-hero-inner,
  .media-row,
  .media-row:nth-child(even) {
    grid-template-columns: 1fr;
    flex-direction: column;
    gap: 24px;
  }

  .category-hero h1 {
    font-size: 32px;
  }

  .section-head h2 {
    font-size: 24px;
  }

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

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

@media (max-width: 767.98px) {
  section {
    padding: 64px 0;
  }

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

  .category-hero .lead {
    font-size: 15px;
  }

  .hero-badge {
    width: 64px;
    height: 64px;
    font-size: 12px;
  }

  .stat-row {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .stat-item strong {
    font-size: 32px;
  }

  .step-grid,
  .guide-grid {
    grid-template-columns: 1fr;
  }

  .notice-row {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .cta-text h2 {
    font-size: 22px;
  }

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

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

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

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