/* roulang page: index */
:root {
  --primary: #00a651;
  --primary-dark: #008c45;
  --primary-light: #e6f7ef;
  --accent: #0ea5e9;
  --accent-light: #e0f2fe;
  --dark: #0b1220;
  --dark-soft: #111c2e;
  --bg: #f5f8fb;
  --card: #ffffff;
  --text: #1e293b;
  --muted: #64748b;
  --border: #e2e8f0;
  --radius: 20px;
  --radius-sm: 12px;
  --shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
  --shadow-sm: 0 6px 20px rgba(15, 23, 42, 0.06);
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

ul,
ol {
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

img {
  max-width: 100%;
  display: block;
  border: 0;
}

button,
input,
summary {
  font-family: inherit;
}

.container {
  width: min(1200px, 100% - 48px);
  margin-inline: auto;
}

section {
  padding: 96px 0;
}

.section-head {
  margin-bottom: 48px;
}

.section-head.centered {
  text-align: center;
  max-width: 720px;
  margin-inline: auto;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 0.05em;
  font-size: 14px;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.section-kicker::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.section-head.centered .section-kicker::after {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.section-head h2 {
  font-size: clamp(30px, 4vw, 42px);
  line-height: 1.25;
  color: var(--dark);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.section-head p {
  color: var(--muted);
  font-size: 16px;
  margin-top: 14px;
  max-width: 640px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  border: 0;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 10px 30px rgba(0, 166, 81, 0.25);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 36px rgba(0, 166, 81, 0.35);
}

.btn-accent {
  background: linear-gradient(135deg, var(--accent), #0369a1);
  color: #fff;
  box-shadow: 0 10px 30px rgba(14, 165, 233, 0.25);
}

.btn-accent:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 36px rgba(14, 165, 233, 0.35);
}

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

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-3px);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: 0 8px 30px rgba(15, 23, 42, 0.04);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 74px;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 23px;
  font-weight: 900;
  color: var(--dark);
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.brand span {
  color: var(--primary);
  font-weight: 800;
}

.brand::before {
  content: "";
  width: 10px;
  height: 34px;
  border-radius: 8px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  box-shadow: 0 6px 16px rgba(0, 166, 81, 0.3);
}

.nav-toggle {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  overflow: hidden;
}

.nav-toggle-label {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--primary-light);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.nav-toggle-label span {
  width: 18px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links li a {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
}

.nav-links li a:hover {
  background: var(--primary-light);
  color: var(--primary);
}

.nav-links li.active a {
  background: var(--primary-light);
  color: var(--primary);
}

.nav-cta {
  padding: 11px 22px;
  font-size: 14px;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 140px 0 80px;
  background:
    linear-gradient(135deg, rgba(5, 18, 35, 0.18), rgba(15, 23, 42, 0.55)),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top right, rgba(14, 165, 233, 0.22), transparent 50%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 56px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: #fff;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  backdrop-filter: blur(10px);
  margin-bottom: 24px;
}

.hero-badge .pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.6);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  70% {
    box-shadow: 0 0 0 12px rgba(52, 211, 153, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(52, 211, 153, 0);
  }
}

.hero h1 {
  color: #fff;
  font-size: clamp(36px, 5vw, 58px);
  line-height: 1.15;
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero h1 .gradient-text {
  background: linear-gradient(120deg, #6ee7b7, #38bdf8, #a7f3d0);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-desc {
  color: rgba(255, 255, 255, 0.82);
  font-size: 17px;
  max-width: 540px;
  margin-bottom: 32px;
}

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

.hero-tags span {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  backdrop-filter: blur(8px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

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

.hero-stat-card {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(14px);
  border-radius: var(--radius);
  padding: 24px 20px;
  color: #fff;
}

.hero-stat-card strong {
  font-size: 32px;
  font-weight: 900;
  display: block;
  line-height: 1.2;
}

.hero-stat-card span {
  font-size: 14px;
  opacity: 0.75;
}

.quick-entry {
  padding: 72px 0;
  margin-top: -40px;
  position: relative;
  z-index: 3;
}

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

.quick-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(255, 255, 255, 0.8);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.quick-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.quick-card .quick-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.quick-card h3 {
  font-size: 17px;
  color: var(--dark);
  font-weight: 800;
}

.quick-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
}

.features {
  background: var(--card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

.feature-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
}

.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 24px;
}

.feature-card h3 {
  font-size: 20px;
  color: var(--dark);
  font-weight: 800;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
}

.category-index {
  background:
    linear-gradient(rgba(11, 18, 32, 0.8), rgba(11, 18, 32, 0.85)),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
}

.category-index .section-head .section-kicker,
.category-index .section-head h2,
.category-index .section-head p {
  color: #fff;
}

.category-index .section-kicker::before {
  background: #6ee7b7;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.category-card {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  min-height: 420px;
  display: flex;
  align-items: flex-end;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.category-card:hover {
  transform: translateY(-8px) scale(1.01);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.45);
}

.category-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.category-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 20%, rgba(0, 0, 0, 0.88) 100%);
}

.category-card-body {
  position: relative;
  z-index: 2;
  padding: 32px;
  width: 100%;
  color: #fff;
}

.category-card-body h3 {
  font-size: 26px;
  font-weight: 900;
  margin-bottom: 10px;
}

.category-card-body p {
  color: rgba(255, 255, 255, 0.78);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 20px;
}

.category-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.26);
  backdrop-filter: blur(8px);
  color: #fff;
  padding: 10px 20px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 14px;
  transition: background 0.25s ease, transform 0.25s ease;
}

.category-link:hover {
  background: var(--primary);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.latest-news {
  background: var(--bg);
}

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

.post-card {
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.post-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
}

.post-thumb {
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--dark-soft);
}

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

.post-card:hover .post-thumb img {
  transform: scale(1.06);
}

.post-body {
  padding: 22px;
}

.post-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 12px;
  font-weight: 800;
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.post-body h3 {
  font-size: 17px;
  line-height: 1.5;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 10px;
}

.post-body h3 a:hover {
  color: var(--primary);
}

.post-body p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}

.post-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
  padding-top: 16px;
  font-size: 13px;
  color: var(--muted);
}

.post-meta a {
  color: var(--primary);
  font-weight: 700;
}

.empty-state {
  background: var(--card);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  text-align: center;
  padding: 56px 24px;
  color: var(--muted);
  font-size: 16px;
}

.process {
  background: var(--card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

.process-step {
  position: relative;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.process-step:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.step-num {
  display: inline-flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-weight: 900;
  font-size: 16px;
  margin-bottom: 20px;
}

.process-step h3 {
  font-size: 18px;
  color: var(--dark);
  font-weight: 800;
  margin-bottom: 10px;
}

.process-step p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

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

.faq-wrap {
  max-width: 860px;
  margin-inline: auto;
  display: grid;
  gap: 14px;
}

.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px 24px;
  transition: box-shadow 0.25s ease, border-color 0.25s ease;
}

.faq-item:hover {
  border-color: rgba(0, 166, 81, 0.4);
  box-shadow: var(--shadow-sm);
}

.faq-item summary {
  cursor: pointer;
  padding: 18px 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--dark);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

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

.faq-item summary::after {
  content: "+";
  font-size: 24px;
  font-weight: 400;
  color: var(--primary);
  transition: transform 0.25s ease;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  color: var(--muted);
  padding-bottom: 22px;
  line-height: 1.8;
  font-size: 15px;
}

.cta-banner {
  position: relative;
  padding: 100px 0;
  background:
    linear-gradient(135deg, rgba(0, 166, 81, 0.88), rgba(14, 165, 233, 0.78)),
    url("/assets/images/backpic/back-3.png") center/cover no-repeat;
}

.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 720px;
  margin-inline: auto;
  color: #fff;
}

.cta-inner h2 {
  font-size: clamp(30px, 4.5vw, 46px);
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
}

.cta-inner p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 17px;
  margin-bottom: 34px;
}

.cta-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

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

.btn-white:hover {
  background: var(--primary-light);
  color: var(--primary);
  transform: translateY(-3px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.18);
}

.site-footer {
  background: var(--dark);
  color: #94a3b8;
  padding-top: 72px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 24px;
  font-weight: 900;
  color: #fff;
}

.footer-logo span {
  color: #6ee7b7;
}

.footer-logo::before {
  content: "";
  width: 10px;
  height: 34px;
  border-radius: 8px;
  background: linear-gradient(180deg, #00a651, #38bdf8);
}

.footer-brand p {
  margin-top: 18px;
  line-height: 1.8;
  max-width: 360px;
}

.footer-links h4,
.footer-contact h4 {
  color: #fff;
  font-size: 17px;
  font-weight: 800;
  margin-bottom: 18px;
}

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

.footer-links a:hover {
  color: #6ee7b7;
}

.footer-contact p {
  line-height: 1.8;
  margin-bottom: 12px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 26px 0;
  text-align: center;
  font-size: 14px;
}

.footer-bottom p {
  margin: 0;
}

@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-stats {
    max-width: 520px;
  }

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

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

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

@media (max-width: 860px) {
  .nav-wrap {
    flex-wrap: wrap;
    min-height: 70px;
  }

  .nav-toggle-label {
    display: inline-flex;
    order: 3;
  }

  .nav-cta {
    order: 2;
    margin-left: auto;
    margin-right: 8px;
  }

  .site-nav {
    display: none;
    width: 100%;
    order: 4;
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 16px;
  }

  .nav-toggle:checked ~ .site-nav {
    display: block;
  }

  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }

  .nav-links li a {
    display: block;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
  }
}

@media (max-width: 768px) {
  section {
    padding: 72px 0;
  }

  .hero {
    padding: 100px 0 56px;
  }

  .feature-grid,
  .quick-grid,
  .post-grid,
  .process-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

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

  .category-card {
    min-height: 360px;
  }
}

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

  .nav-wrap {
    gap: 12px;
  }

  .brand {
    font-size: 19px;
  }

  .nav-cta {
    display: none;
  }

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

  .hero-stat-card strong {
    font-size: 26px;
  }

  .hero-stat-card {
    padding: 18px;
  }

  .section-head h2 {
    font-size: 28px;
  }

  .cta-banner {
    padding: 72px 0;
  }

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

/* roulang page: category1 */
:root {
  --primary: #4f6df5;
  --primary-dark: #3a52d6;
  --primary-light: #eef1fe;
  --accent: #7b5cff;
  --accent-light: #f0edfe;
  --secondary: #f5a623;
  --secondary-light: #fff7e6;
  --bg: #f8f9fe;
  --bg-white: #ffffff;
  --bg-deep: #1a1f3d;
  --text: #2a2f45;
  --text-weak: #6b7280;
  --border: #e5e7f0;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow: 0 10px 40px rgba(79, 109, 245, 0.12);
  --shadow-sm: 0 4px 16px rgba(79, 109, 245, 0.08);
  --shadow-lg: 0 20px 60px rgba(79, 109, 245, 0.18);
  --space: 24px;
  --space-lg: 56px;
  --space-xl: 88px;
  --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; transition: color 0.3s; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
ul, ol { list-style: none; }
h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; color: var(--text); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 var(--space); }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.3s ease;
  background: transparent;
  text-align: center;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  box-shadow: 0 6px 24px rgba(79, 109, 245, 0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(79, 109, 245, 0.45);
  color: #fff;
}
.btn-outline {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(79, 109, 245, 0.06);
}
.btn-outline:hover {
  background: rgba(79, 109, 245, 0.12);
  transform: translateY(-2px);
  color: var(--primary-dark);
}
.btn-light {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}
.btn-light:hover { transform: translateY(-2px); color: var(--primary-dark); }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(229, 231, 240, 0.6);
  box-shadow: 0 2px 12px rgba(26, 31, 61, 0.04);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px var(--space);
  min-height: 72px;
}
.brand {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--text);
  white-space: nowrap;
  display: flex;
  align-items: baseline;
}
.brand span {
  color: var(--primary);
  font-weight: 600;
  font-size: 20px;
  margin-left: 2px;
}
.brand:hover { color: var(--text); }
.nav-toggle { display: none; }
.nav-toggle-label {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle-label span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.site-nav { display: flex; align-items: center; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-weak);
  padding: 6px 2px;
  position: relative;
  white-space: nowrap;
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
  transition: width 0.3s ease;
}
.nav-links a:hover { color: var(--primary); }
.nav-links a:hover::after { width: 100%; }
.nav-links li.active a { color: var(--primary); font-weight: 600; }
.nav-links li.active a::after { width: 100%; }
.nav-cta { padding: 10px 24px; font-size: 14px; }

/* Hero */
.category-hero {
  position: relative;
  padding: 80px 0 90px;
  background: linear-gradient(135deg, #eef1fe 0%, #f5f0ff 60%, #fff7e6 100%);
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.category-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.22;
  z-index: 0;
}
.category-hero::after {
  content: '';
  position: absolute;
  bottom: -60px;
  right: -40px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(123, 92, 255, 0.1), transparent 70%);
  z-index: 0;
}
.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(123, 92, 255, 0.2);
  padding: 8px 20px;
  border-radius: 999px;
  font-size: 14px;
  color: var(--primary);
  font-weight: 600;
  backdrop-filter: blur(6px);
  box-shadow: 0 4px 12px rgba(79, 109, 245, 0.08);
  margin-bottom: 24px;
}
.hero-badge i { font-style: normal; }
.hero-badge::before {
  content: '●';
  color: var(--accent);
  font-size: 8px;
}
.category-hero h1 {
  font-size: 46px;
  font-weight: 800;
  letter-spacing: 2px;
  margin-bottom: 20px;
  background: linear-gradient(120deg, #1a1f3d 20%, var(--primary) 55%, var(--accent) 90%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.category-hero p {
  font-size: 18px;
  color: var(--text-weak);
  max-width: 720px;
  margin: 0 auto 36px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-meta {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-top: 48px;
  flex-wrap: wrap;
}
.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-weak);
  background: rgba(255, 255, 255, 0.7);
  padding: 10px 20px;
  border-radius: 999px;
  box-shadow: 0 2px 8px rgba(79, 109, 245, 0.06);
}
.hero-meta-item strong {
  color: var(--primary);
  font-size: 18px;
}

/* Section base */
.section { padding: var(--space-xl) 0; }
.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}
.section-head h2 {
  font-size: 34px;
  font-weight: 800;
  margin-bottom: 14px;
  letter-spacing: 1px;
}
.section-head p {
  color: var(--text-weak);
  font-size: 16px;
  line-height: 1.7;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Login Methods */
.methods-section {
  background: var(--bg-white);
}
.methods-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.method-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: all 0.35s ease;
  position: relative;
  overflow: hidden;
}
.method-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity 0.3s;
}
.method-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-6px);
  background: #fff;
}
.method-card:hover::before { opacity: 1; }
.method-icon {
  width: 64px;
  height: 64px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 26px;
  color: var(--primary);
  font-weight: 700;
  box-shadow: 0 6px 16px rgba(79, 109, 245, 0.1);
}
.method-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
}
.method-card p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.6;
  margin-bottom: 16px;
}
.method-tag {
  display: inline-block;
  font-size: 12px;
  padding: 4px 14px;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}
.method-tag.hot {
  background: var(--secondary-light);
  color: #d48806;
}

/* Steps */
.steps-section {
  background: var(--bg-deep);
  position: relative;
  overflow: hidden;
}
.steps-section::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79, 109, 245, 0.2), transparent 70%);
}
.steps-section::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -80px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(123, 92, 255, 0.2), transparent 70%);
}
.steps-section .section-head h2 { color: #fff; }
.steps-section .section-head p { color: rgba(255, 255, 255, 0.7); }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  position: relative;
  z-index: 1;
}
.step-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 32px 24px;
  position: relative;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}
.step-card:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-4px);
}
.step-num {
  font-size: 42px;
  font-weight: 800;
  background: linear-gradient(135deg, #8fa3ff, #c4b5ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
  line-height: 1;
}
.step-card h3 {
  color: #fff;
  font-size: 18px;
  margin-bottom: 10px;
}
.step-card p {
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
  line-height: 1.6;
}

/* Feat cards */
.feat-section { background: var(--bg); }
.feat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feat-card {
  display: flex;
  gap: 20px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all 0.3s ease;
}
.feat-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
  border-color: transparent;
}
.feat-icon {
  flex: 0 0 48px;
  width: 48px;
  height: 48px;
  background: var(--primary-light);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--primary);
}
.feat-text h3 {
  font-size: 17px;
  margin-bottom: 8px;
}
.feat-text p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.65;
}

/* Notice / tips */
.notice-section {
  background: var(--bg-white);
}
.notice-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: start;
}
.notice-image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 380px;
}
.notice-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.notice-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px 22px;
  transition: all 0.3s ease;
}
.notice-item:hover {
  background: #fff;
  box-shadow: var(--shadow-sm);
  transform: translateX(6px);
}
.notice-icon {
  flex: 0 0 36px;
  width: 36px;
  height: 36px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--primary);
  font-weight: 700;
}
.notice-item h4 {
  font-size: 15px;
  margin-bottom: 4px;
}
.notice-item p {
  font-size: 13px;
  color: var(--text-weak);
  line-height: 1.6;
}

/* FAQ */
.faq-section { background: var(--bg); }
.faq-wrap {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  overflow: hidden;
  transition: box-shadow 0.3s ease;
}
.faq-item:hover { box-shadow: var(--shadow-sm); }
.faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 600;
  font-size: 16px;
  list-style: none;
  background: #fff;
  transition: background 0.3s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 22px;
  color: var(--primary);
  font-weight: 500;
  transition: transform 0.3s;
  flex-shrink: 0;
}
.faq-item[open] summary { background: var(--primary-light); }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .faq-body {
  padding: 0 24px 22px;
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
  background: var(--primary-light);
}

/* CTA */
.cta-section {
  padding: 80px 0;
  position: relative;
  background: linear-gradient(135deg, #1a1f3d 0%, #2b2f55 60%, var(--primary-dark) 100%);
  overflow: hidden;
}
.cta-section::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
}
.cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}
.cta-inner h2 {
  color: #fff;
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 14px;
  letter-spacing: 1px;
}
.cta-inner p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 16px;
  margin-bottom: 30px;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.cta-note {
  margin-top: 18px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
}

/* Footer */
.site-footer {
  background: var(--bg-deep);
  color: rgba(255, 255, 255, 0.7);
  padding-top: 64px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-logo {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  display: flex;
  align-items: baseline;
  margin-bottom: 14px;
}
.footer-logo span { color: var(--primary); font-weight: 600; font-size: 18px; }
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  max-width: 360px;
  color: rgba(255, 255, 255, 0.6);
}
.footer-links h4,
.footer-contact h4 {
  color: #fff;
  font-size: 16px;
  margin-bottom: 16px;
  font-weight: 600;
}
.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  transition: color 0.3s;
  position: relative;
  padding-left: 12px;
}
.footer-links a::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}
.footer-links a:hover { color: #fff; }
.footer-contact p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 8px;
  line-height: 1.7;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 22px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

/* Responsive */
@media (max-width: 1024px) {
  .methods-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .notice-layout { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
  .category-hero h1 { font-size: 38px; }
}
@media (max-width: 768px) {
  .nav-wrap { flex-wrap: wrap; padding: 12px 20px; }
  .nav-toggle-label { display: flex; }
  .site-nav {
    display: none;
    width: 100%;
    order: 3;
    padding: 16px 0 8px;
    border-top: 1px solid var(--border);
    margin-top: 8px;
  }
  .nav-toggle:checked ~ .site-nav { display: block; }
  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(2) { opacity: 0; }
  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .nav-links { flex-direction: column; align-items: center; gap: 20px; padding: 8px 0; }
  .nav-links a { font-size: 16px; }
  .nav-cta { display: none; }
  .category-hero { padding: 60px 0 70px; }
  .category-hero h1 { font-size: 30px; }
  .category-hero p { font-size: 16px; }
  .hero-meta { gap: 12px; }
  .hero-meta-item { font-size: 13px; padding: 8px 16px; }
  .section-head h2 { font-size: 28px; }
  .methods-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; gap: 18px; }
  .feat-grid { grid-template-columns: 1fr; gap: 18px; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .cta-inner h2 { font-size: 26px; }
  .notice-image img { min-height: 240px; }
}
@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .brand { font-size: 20px; }
  .brand span { font-size: 17px; }
  .category-hero h1 { font-size: 26px; }
  .section { padding: 48px 0; }
  .section-head h2 { font-size: 24px; }
  .hero-actions .btn { width: 100%; margin-bottom: 8px; }
  .cta-actions .btn { width: 100%; }
  .step-card { padding: 24px 20px; }
  .feat-card { flex-direction: column; }
}

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
  --primary: #153e8a;
  --primary-dark: #0f2d6b;
  --primary-light: #2a5fc1;
  --primary-soft: #eaf0fb;
  --accent: #f59e0b;
  --accent-dark: #d97706;
  --accent-light: #fbbf24;
  --accent-soft: #fef3dc;
  --bg: #f4f6fb;
  --surface: #ffffff;
  --text: #12203a;
  --text-body: #36415a;
  --text-weak: #7b8499;
  --border: #e3e8f2;
  --border-light: #eef1f8;
  --radius: 18px;
  --radius-sm: 12px;
  --radius-xs: 8px;
  --shadow: 0 6px 24px rgba(21, 62, 138, 0.08);
  --shadow-lg: 0 16px 48px rgba(21, 62, 138, 0.14);
  --shadow-accent: 0 8px 28px rgba(245, 158, 11, 0.28);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}

/* ===== Reset / Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text-body);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-light); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input { font-family: inherit; }

/* ===== 容器 ===== */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  transition: var(--transition);
  border: 2px solid transparent;
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 6px 20px rgba(21, 62, 138, 0.22);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(21, 62, 138, 0.28);
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 4px 14px rgba(21, 62, 138, 0.2); }
.btn-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: #fff;
  border-color: var(--accent);
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.25);
}
.btn-accent:hover {
  background: linear-gradient(135deg, var(--accent-dark), var(--accent));
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(245, 158, 11, 0.3);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary-soft);
  color: var(--primary);
  border-color: var(--primary);
  transform: translateY(-2px);
}
.btn-light {
  background: #fff;
  color: var(--primary);
  border-color: #fff;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
}
.btn-light:hover {
  background: var(--accent-soft);
  color: var(--accent-dark);
  transform: translateY(-2px);
}
.btn-block { display: flex; width: 100%; }
.btn-sm { padding: 8px 18px; font-size: 14px; }
.btn-lg { padding: 16px 40px; font-size: 16px; }

/* ===== 徽章 / 标签 ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 16px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  background: var(--primary-soft);
  color: var(--primary);
}
.badge-accent {
  background: var(--accent-soft);
  color: var(--accent-dark);
}
.tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 30px;
  font-size: 13px;
  background: var(--primary-soft);
  color: var(--primary);
  transition: var(--transition);
  cursor: default;
}
.tag:hover { background: var(--primary); color: #fff; }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
}
.site-header.scrolled {
  box-shadow: 0 6px 30px rgba(21, 62, 138, 0.08);
}
.nav-wrap {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 76px;
}
.brand {
  font-size: 22px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.5px;
  display: flex;
  align-items: baseline;
  line-height: 1;
}
.brand span {
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  margin-left: 6px;
  background: var(--accent-soft);
  padding: 3px 12px;
  border-radius: 30px;
}
.brand:hover { color: var(--text); }

.nav-toggle { display: none; }
.nav-toggle-label {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 10px;
  margin-left: auto;
}
.nav-toggle-label span {
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 3px;
  transition: var(--transition);
}

.site-nav { margin-left: auto; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-links a {
  display: block;
  padding: 9px 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-body);
  border-radius: 30px;
  transition: var(--transition);
}
.nav-links a:hover {
  color: var(--primary);
  background: var(--primary-soft);
}
.nav-links .active a { color: var(--primary); background: var(--primary-soft); font-weight: 600; }
.nav-cta { margin-left: 12px; }

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  padding: 104px 0 92px;
  background-size: cover;
  background-position: center;
  color: #fff;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(15, 45, 107, 0.92) 0%, rgba(21, 62, 138, 0.78) 55%, rgba(245, 158, 11, 0.35) 100%);
}
.page-hero .container { position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 20px;
  border-radius: 40px;
  background: rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.28);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.6px;
  margin-bottom: 20px;
  color: #fff;
}
.page-hero h1 {
  font-size: clamp(30px, 4.4vw, 48px);
  font-weight: 800;
  line-height: 1.25;
  color: #fff;
  max-width: 800px;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}
.page-hero .hero-desc {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.9);
  max-width: 640px;
  line-height: 1.7;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 0 8px;
  font-size: 14px;
  color: var(--text-weak);
}
.breadcrumb a { color: var(--text-weak); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb i { font-size: 12px; color: #c3c9d6; }
.breadcrumb .current { color: var(--primary); font-weight: 500; }

/* ===== Article Page ===== */
.article-page {
  padding: 36px 0 70px;
}
.article-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 44px;
  align-items: start;
  margin-top: 18px;
}

/* ===== Article Main ===== */
.article-main {
  min-width: 0;
}
.article-card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow);
  padding: 48px 52px;
}
.article-header {
  margin-bottom: 36px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border-light);
}
.article-title {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--text);
  margin: 16px 0 18px;
  letter-spacing: -0.3px;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.article-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-weak);
}
.article-meta-item i { font-size: 14px; color: var(--accent); }

/* ===== Article Content ===== */
.article-content-body {
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-body);
}
.article-content-body p { margin-bottom: 1.4em; }
.article-content-body h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  margin: 1.8em 0 0.8em;
  padding-left: 16px;
  border-left: 4px solid var(--accent);
  line-height: 1.4;
}
.article-content-body h3 {
  font-size: 21px;
  font-weight: 700;
  color: var(--text);
  margin: 1.6em 0 0.6em;
}
.article-content-body h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin: 1.4em 0 0.5em;
}
.article-content-body ul {
  margin: 0 0 1.4em;
  padding-left: 22px;
}
.article-content-body ul li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
}
.article-content-body ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
}
.article-content-body ol {
  margin: 0 0 1.4em;
  padding-left: 22px;
  list-style: decimal;
}
.article-content-body ol li {
  padding-left: 6px;
  margin-bottom: 8px;
}
.article-content-body img {
  border-radius: var(--radius-sm);
  margin: 1.4em 0;
  box-shadow: var(--shadow);
}
.article-content-body blockquote {
  background: var(--primary-soft);
  border-left: 4px solid var(--primary);
  padding: 18px 24px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.4em 0;
  color: var(--text);
  font-weight: 500;
}
.article-content-body a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.article-content-body a:hover { color: var(--accent-dark); }
.article-content-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.4em 0;
  font-size: 15px;
}
.article-content-body th,
.article-content-body td {
  padding: 12px 16px;
  border: 1px solid var(--border);
  text-align: left;
}
.article-content-body th {
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 600;
}
.article-content-body tr:nth-child(even) { background: #fafbfe; }

/* ===== Article Tags ===== */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 34px;
  padding-top: 24px;
  border-top: 1px solid var(--border-light);
}
.article-tags .tag { font-size: 13px; }

/* ===== Article Footer Share ===== */
.article-share {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 24px;
  font-size: 14px;
  color: var(--text-weak);
}
.article-share .share-text { margin-right: 6px; }
.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: var(--primary-soft);
  color: var(--primary);
  transition: var(--transition);
  font-size: 15px;
}
.share-btn:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-3px);
}

/* ===== Sidebar ===== */
.article-side {
  display: flex;
  flex-direction: column;
  gap: 28px;
  position: sticky;
  top: 104px;
}
.side-card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow);
  padding: 28px;
}
.side-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.side-card h3 i {
  color: var(--accent);
  font-size: 18px;
}
.side-guide {
  background: linear-gradient(150deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #fff;
  border: none;
  text-align: center;
}
.side-guide h3 { color: #fff; justify-content: center; }
.side-guide-icon {
  width: 64px;
  height: 64px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: var(--accent-light);
  margin: 0 auto 18px;
}
.side-guide p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 14px;
  margin-bottom: 20px;
  line-height: 1.7;
}
.side-guide .btn {
  background: #fff;
  color: var(--primary);
  font-weight: 700;
}
.side-guide .btn:hover {
  background: var(--accent-soft);
  color: var(--accent-dark);
}
.side-cat-list li + li { border-top: 1px solid var(--border-light); }
.side-cat-list a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 4px;
  color: var(--text-body);
  font-size: 15px;
  border-radius: 10px;
  transition: var(--transition);
}
.side-cat-list a:hover {
  background: var(--primary-soft);
  color: var(--primary);
  padding-left: 14px;
}
.side-cat-list a i:first-child {
  color: var(--accent);
  font-size: 18px;
}
.side-cat-list a i:last-child {
  margin-left: auto;
  font-size: 13px;
  color: #c3c9d6;
}
.side-featured {
  padding: 0;
  overflow: hidden;
}
.side-featured img {
  width: 100%;
  height: 150px;
  object-fit: cover;
}
.side-featured-body { padding: 22px 28px 26px; }
.side-featured-body h3 {
  font-size: 17px;
  margin-bottom: 8px;
}
.side-featured-body p {
  font-size: 14px;
  color: var(--text-weak);
  margin-bottom: 14px;
  line-height: 1.6;
}
.text-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.text-link:hover { color: var(--accent-dark); gap: 10px; }

/* ===== Related Section ===== */
.related-section {
  background: var(--surface);
  padding: 80px 0;
  border-top: 1px solid var(--border-light);
}
.section-head {
  text-align: center;
  margin-bottom: 48px;
}
.section-head .section-sub {
  display: inline-block;
  padding: 5px 18px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 600;
  border-radius: 30px;
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: 34px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.5px;
  line-height: 1.3;
}
.section-head p {
  color: var(--text-weak);
  font-size: 16px;
  max-width: 560px;
  margin: 12px auto 0;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.related-card {
  background: var(--bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border);
}
.related-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  transition: var(--transition);
}
.related-card:hover img { transform: scale(1.04); }
.related-card-body { padding: 24px 26px 26px; }
.related-card-body .badge { margin-bottom: 10px; }
.related-card-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 10px;
}
.related-card-body p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.65;
  margin-bottom: 14px;
}
.related-card-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: var(--text-weak);
}
.related-card-meta i { font-size: 13px; color: var(--accent); }

/* ===== Not Found ===== */
.not-found-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 520px;
  padding: 80px 20px;
}
.nf-card {
  background: var(--surface);
  border-radius: var(--radius-lg, 24px);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-lg);
  padding: 54px 44px;
  text-align: center;
  max-width: 540px;
  width: 100%;
}
.nf-code {
  font-size: 72px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
  line-height: 1;
  margin-bottom: 10px;
}
.nf-card h1 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}
.nf-card p {
  color: var(--text-weak);
  margin-bottom: 28px;
  font-size: 15px;
}

/* ===== CTA Section ===== */
.cta-section {
  position: relative;
  padding: 90px 0;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary) 60%, var(--primary-light));
  color: #fff;
  text-align: center;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.2);
  filter: blur(80px);
}
.cta-section::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -80px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  filter: blur(70px);
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 {
  font-size: 34px;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.cta-section p {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.85);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.7;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== FAQ Section ===== */
.faq-section {
  padding: 90px 0;
  background: var(--bg);
}
.faq-grid {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  background: var(--surface);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  margin-bottom: 16px;
  transition: var(--transition);
  overflow: hidden;
}
.faq-item:hover {
  border-color: var(--border);
  box-shadow: var(--shadow);
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 28px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  transition: var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 14px;
  color: var(--accent);
  transition: var(--transition);
  flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(180deg); }
.faq-item[open] summary { color: var(--primary); }
.faq-item[open] {
  border-color: var(--primary-soft);
  box-shadow: var(--shadow);
}
.faq-answer {
  padding: 0 28px 22px;
  color: var(--text-body);
  font-size: 15px;
  line-height: 1.8;
  border-top: 1px dashed var(--border-light);
  padding-top: 16px;
  margin-top: 4px;
}
.faq-answer a { font-weight: 600; }

/* ===== Footer ===== */
.site-footer {
  background: #0d1b36;
  color: #a7b2c9;
  padding: 70px 0 0;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-logo {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 16px;
  line-height: 1;
}
.footer-logo span {
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  background: rgba(245, 158, 11, 0.15);
  padding: 3px 12px;
  border-radius: 30px;
}
.footer-brand p {
  max-width: 300px;
  line-height: 1.8;
  color: #8a96ad;
  font-size: 14px;
}
.footer-links h4,
.footer-contact h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 20px;
}
.footer-links ul li { margin-bottom: 10px; }
.footer-links a {
  color: #8a96ad;
  transition: var(--transition);
}
.footer-links a:hover { color: var(--accent-light); padding-left: 4px; }
.footer-contact p {
  margin-bottom: 8px;
  color: #8a96ad;
  line-height: 1.7;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 0;
  text-align: center;
  background: #0a1527;
}
.footer-bottom p {
  font-size: 13px;
  color: #67748f;
}

/* ===== Animation ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.page-hero .container,
.article-grid,
.related-grid,
.faq-grid,
.cta-section .container {
  animation: fadeUp 0.6s ease both;
}

/* ===== Focus ===== */
:focus-visible {
  outline: 3px solid rgba(245, 158, 11, 0.6);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .article-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .article-side {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
  }
  .side-card { flex: 1 1 calc(50% - 14px); min-width: 260px; }
  .related-grid { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .nav-wrap { height: 64px; gap: 16px; }
  .nav-toggle-label { display: flex; }
  .site-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border-light);
    box-shadow: 0 20px 40px rgba(21, 62, 138, 0.1);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    margin-left: 0;
  }
  .nav-toggle:checked ~ .site-nav {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(1) { transform: rotate(45deg) translateY(6px); }
  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(2) { opacity: 0; }
  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(3) { transform: rotate(-45deg) translateY(-6px); }
  .nav-links {
    flex-direction: column;
    align-items: stretch;
    padding: 16px 20px;
    gap: 4px;
  }
  .nav-links a { padding: 12px 16px; }
  .nav-cta { display: none; }
  .page-hero { padding: 72px 0 64px; }
  .page-hero h1 { font-size: 28px; }
  .article-card { padding: 28px 22px; }
  .article-title { font-size: 24px; }
  .article-content-body { font-size: 15px; }
  .section-head h2 { font-size: 26px; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-section { padding: 64px 0; }
  .cta-section h2 { font-size: 26px; }
  .faq-section { padding: 64px 0; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .brand { font-size: 18px; }
  .brand span { font-size: 12px; padding: 2px 10px; }
  .hero-badge { font-size: 12px; padding: 4px 14px; }
  .article-card { padding: 22px 16px; }
  .article-title { font-size: 22px; }
  .page-hero .hero-desc { font-size: 15px; }
  .side-card { flex: 1 1 100%; }
  .btn { padding: 10px 22px; font-size: 14px; }
  .cta-actions { flex-direction: column; align-items: center; }
  .cta-actions .btn { width: 100%; }
  .nf-card { padding: 36px 24px; }
  .faq-item summary { padding: 16px 18px; font-size: 15px; }
  .faq-answer { padding: 0 18px 18px; font-size: 14px; }
  .article-meta { gap: 10px; flex-direction: column; align-items: flex-start; }
  .related-card-body { padding: 20px 18px; }
}

/* roulang page: category2 */
:root {
            --color-primary: #2462e0;
            --color-primary-dark: #1a4ab8;
            --color-primary-light: #e8effc;
            --color-accent: #ff7a1a;
            --color-accent-dark: #e66500;
            --color-accent-light: #fff1e6;
            --color-bg: #f7f9fc;
            --color-bg-white: #ffffff;
            --color-bg-dark: #132b4a;
            --color-text: #1f2d3d;
            --color-text-light: #5b6b7f;
            --color-text-lighter: #8a97a8;
            --color-border: #e3e8f0;
            --color-success: #12b76a;
            --color-warning: #f79009;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(19, 43, 74, 0.06);
            --shadow-md: 0 6px 20px rgba(19, 43, 74, 0.08);
            --shadow-lg: 0 16px 40px rgba(19, 43, 74, 0.12);
            --space-section: 96px;
            --space-section-sm: 64px;
            --container-max: 1240px;
            --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

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

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

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

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

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        ul,
        ol {
            list-style: none;
        }

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            outline: none;
        }

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

        .site-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(227, 232, 240, 0.8);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 10px rgba(19, 43, 74, 0.03);
        }

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

        .brand {
            font-size: 22px;
            font-weight: 800;
            color: var(--color-text);
            letter-spacing: -0.3px;
            display: flex;
            align-items: baseline;
            flex-shrink: 0;
            transition: opacity 0.2s ease;
        }

        .brand:hover {
            opacity: 0.82;
        }

        .brand span {
            color: var(--color-primary);
            font-weight: 700;
            margin-left: 2px;
        }

        .nav-toggle {
            display: none;
        }

        .nav-toggle-label {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: background 0.2s ease;
        }

        .nav-toggle-label:hover {
            background: var(--color-primary-light);
        }

        .nav-toggle-label span {
            width: 22px;
            height: 2px;
            background: var(--color-text);
            border-radius: 4px;
            transition: var(--transition);
        }

        .nav-toggle:checked~.nav-toggle-label span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle:checked~.nav-toggle-label span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle:checked~.nav-toggle-label span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

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

        .nav-links {
            display: flex;
            gap: 40px;
            align-items: center;
        }

        .nav-links li a {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-light);
            padding: 8px 2px;
            position: relative;
            letter-spacing: 0.2px;
        }

        .nav-links li a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: width 0.3s ease;
        }

        .nav-links li a:hover {
            color: var(--color-text);
        }

        .nav-links li a:hover::after {
            width: 100%;
        }

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

        .nav-links li.active a::after {
            width: 100%;
        }

        .nav-cta {
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1;
            padding: 12px 28px;
            border-radius: 999px;
            cursor: pointer;
            transition: var(--transition);
            border: 2px solid transparent;
            letter-spacing: 0.2px;
            text-align: center;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(36, 98, 224, 0.25);
        }

        .btn-primary:hover {
            background: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(36, 98, 224, 0.3);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 10px rgba(36, 98, 224, 0.2);
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(36, 98, 224, 0.35);
            outline-offset: 2px;
        }

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

        .btn-outline:hover {
            background: var(--color-primary-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(36, 98, 224, 0.12);
        }

        .btn-large {
            padding: 16px 40px;
            font-size: 16px;
        }

        .page-banner {
            background: linear-gradient(135deg, #132b4a 0%, #1c3d6e 40%, #2462e0 100%);
            padding: 110px 0 160px;
            position: relative;
            overflow: hidden;
            color: #fff;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(255, 122, 26, 0.15) 0%, transparent 60%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -5%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(36, 98, 224, 0.25) 0%, transparent 55%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-banner .banner-inner {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }

        .page-banner .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 999px;
            padding: 6px 18px;
            font-size: 13px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }

        .page-banner h1 {
            font-size: 46px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.5px;
            margin-bottom: 20px;
        }

        .page-banner h1 span {
            color: #ffb577;
        }

        .page-banner p {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.82);
            max-width: 640px;
            margin-bottom: 0;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 28px;
        }

        .hero-tags .tag-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.85);
        }

        .hero-tags .tag-chip i {
            color: #ffb577;
            font-size: 12px;
        }

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

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

        .section-bg-alt {
            background: var(--color-bg-white);
        }

        .section-bg-dark {
            background: var(--color-bg-dark);
            color: #fff;
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }

        .section-head .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            border-radius: 999px;
            padding: 6px 18px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .section-head .eyebrow i {
            font-size: 12px;
        }

        .section-head h2 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.4px;
            margin-bottom: 16px;
            color: var(--color-text);
        }

        .section-head p {
            font-size: 16px;
            color: var(--color-text-light);
            line-height: 1.75;
        }

        .section-head.light h2 {
            color: #fff;
        }

        .section-head.light p {
            color: rgba(255, 255, 255, 0.75);
        }

        .section-head.light .eyebrow {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }

        .breadcrumb-wrapper {
            position: relative;
            z-index: 2;
            margin-top: 28px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
            transition: color 0.2s;
        }

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb i {
            font-size: 10px;
            color: rgba(255, 255, 255, 0.4);
        }

        .breadcrumb .current {
            color: #ffb577;
            font-weight: 500;
        }

        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
        }

        .overview-media {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .overview-media img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        .overview-media::after {
            content: '华体app网页版登录入口';
            position: absolute;
            bottom: 16px;
            left: 16px;
            background: rgba(19, 43, 74, 0.75);
            backdrop-filter: blur(8px);
            color: #fff;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.5px;
        }

        .overview-content .overview-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-accent-light);
            color: var(--color-accent-dark);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .overview-content h2 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 18px;
            color: var(--color-text);
            letter-spacing: -0.3px;
        }

        .overview-content p {
            font-size: 15.5px;
            line-height: 1.8;
            color: var(--color-text-light);
            margin-bottom: 20px;
        }

        .overview-points {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-top: 24px;
        }

        .overview-point {
            display: flex;
            align-items: center;
            gap: 10px;
            background: var(--color-bg);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text);
            border: 1px solid var(--color-border);
            transition: var(--transition);
        }

        .overview-point:hover {
            border-color: var(--color-primary);
            background: var(--color-primary-light);
            transform: translateX(4px);
        }

        .overview-point i {
            color: var(--color-primary);
            font-size: 14px;
            flex-shrink: 0;
        }

        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .strategy-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .strategy-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(36, 98, 224, 0.25);
        }

        .strategy-card .card-media {
            position: relative;
            height: 220px;
            overflow: hidden;
        }

        .strategy-card .card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .strategy-card .card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(19, 43, 74, 0.85);
            backdrop-filter: blur(6px);
            color: #fff;
            border-radius: 999px;
            padding: 5px 14px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
        }

        .strategy-card .card-body {
            padding: 26px 24px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .strategy-card .card-category {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }

        .strategy-card h3 {
            font-size: 19px;
            font-weight: 700;
            line-height: 1.45;
            color: var(--color-text);
            margin-bottom: 12px;
        }

        .strategy-card p {
            font-size: 14.5px;
            color: var(--color-text-light);
            line-height: 1.75;
            margin-bottom: 20px;
            flex: 1;
        }

        .strategy-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 16px;
            border-top: 1px solid var(--color-border);
        }

        .strategy-card .card-meta {
            font-size: 13px;
            color: var(--color-text-lighter);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .strategy-card .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition);
        }

        .strategy-card .card-link:hover {
            gap: 8px;
            color: var(--color-primary-dark);
        }

        .step-section {
            background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-white) 100%);
            padding: var(--space-section) 0;
            position: relative;
        }

        .step-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-top: 20px;
            position: relative;
        }

        .step-grid::before {
            content: '';
            position: absolute;
            top: 36px;
            left: 15%;
            right: 15%;
            height: 2px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
            border-radius: 2px;
            opacity: 0.4;
        }

        .step-item {
            text-align: center;
            position: relative;
            padding: 0 8px;
        }

        .step-number {
            width: 72px;
            height: 72px;
            margin: 0 auto 20px;
            background: var(--color-bg-white);
            border: 2px solid var(--color-primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: 800;
            color: var(--color-primary);
            box-shadow: 0 8px 24px rgba(36, 98, 224, 0.12);
            position: relative;
            z-index: 1;
        }

        .step-item:nth-child(even) .step-number {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 8px 24px rgba(36, 98, 224, 0.25);
        }

        .step-item h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 10px;
        }

        .step-item p {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.7;
        }

        .hot-tips-section {
            padding: var(--space-section) 0;
            background: var(--color-bg-white);
        }

        .tips-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .tip-card {
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 28px 30px;
            transition: var(--transition);
        }

        .tip-card:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(36, 98, 224, 0.2);
            transform: translateY(-2px);
        }

        .tip-card .tip-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 18px;
        }

        .tip-card h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 10px;
        }

        .tip-card p {
            font-size: 14.5px;
            color: var(--color-text-light);
            line-height: 1.75;
        }

        .reward-section {
            padding: var(--space-section) 0;
            background: linear-gradient(135deg, #132b4a 0%, #1c3d6e 50%, #1a4ab8 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .reward-section::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 122, 26, 0.15) 0%, transparent 60%);
            border-radius: 50%;
            pointer-events: none;
        }

        .reward-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            position: relative;
            z-index: 1;
        }

        .reward-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 30px;
            text-align: center;
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }

        .reward-card:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.2);
        }

        .reward-card .reward-icon {
            font-size: 36px;
            margin-bottom: 16px;
            display: block;
        }

        .reward-card h4 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .reward-card p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.7);
        }

        .faq-section {
            padding: var(--space-section) 0;
            background: var(--color-bg);
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--color-bg-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(36, 98, 224, 0.25);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 22px 28px;
            cursor: pointer;
            gap: 20px;
        }

        .faq-question h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            flex: 1;
        }

        .faq-question .faq-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--color-primary-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
            transition: var(--transition);
        }

        .faq-item.active .faq-icon {
            background: var(--color-primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease, opacity 0.3s ease;
            opacity: 0;
            padding: 0 28px;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            opacity: 1;
            padding-bottom: 24px;
        }

        .faq-answer p {
            font-size: 14.5px;
            color: var(--color-text-light);
            line-height: 1.8;
            border-top: 1px solid var(--color-border);
            padding-top: 18px;
        }

        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            position: relative;
            overflow: hidden;
            color: #fff;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 60%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-inner {
            text-align: center;
            position: relative;
            z-index: 1;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 38px;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }

        .cta-inner p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 36px;
            line-height: 1.7;
        }

        .cta-inner .btn-white {
            background: #fff;
            color: var(--color-primary);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }

        .cta-inner .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
            background: var(--color-accent-light);
        }

        .cta-inner .cta-note {
            margin-top: 20px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }

        .site-footer {
            background: var(--color-bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding-top: 64px;
        }

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

        .footer-brand .footer-logo {
            font-size: 24px;
            font-weight: 800;
            color: #fff;
            display: inline-flex;
            align-items: baseline;
            margin-bottom: 16px;
        }

        .footer-brand .footer-logo span {
            color: #ffb577;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }

        .footer-links h4,
        .footer-contact h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
        }

        .footer-links ul li {
            margin-bottom: 12px;
        }

        .footer-links ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: all 0.25s ease;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-links ul li a:hover {
            color: #ffb577;
            padding-left: 4px;
        }

        .footer-links ul li a i {
            font-size: 10px;
            color: var(--color-primary);
        }

        .footer-contact p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 12px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            line-height: 1.7;
        }

        .footer-contact p i {
            color: var(--color-primary);
            margin-top: 4px;
            font-size: 13px;
            flex-shrink: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            letter-spacing: 0.3px;
        }

        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .step-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 40px 24px;
            }

            .step-grid::before {
                display: none;
            }

            .step-item {
                padding: 0;
            }

            .overview-grid {
                gap: 40px;
            }

            .overview-media img {
                height: 360px;
            }

            .reward-grid {
                gap: 16px;
            }

            .nav-links {
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --space-section: 64px;
                --space-section-sm: 48px;
            }

            .nav-wrap {
                height: 64px;
            }

            .nav-toggle-label {
                display: flex;
                order: 3;
            }

            .site-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-md);
                padding: 20px 24px;
                transform: translateY(-20px);
                opacity: 0;
                visibility: hidden;
                transition: all 0.3s ease;
                z-index: 999;
                flex-direction: column;
                align-items: stretch;
            }

            .nav-toggle:checked~.site-nav {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }

            .nav-links {
                flex-direction: column;
                gap: 6px;
                width: 100%;
            }

            .nav-links li a {
                display: block;
                padding: 14px 8px;
                font-size: 16px;
                border-radius: var(--radius-sm);
                transition: all 0.2s ease;
            }

            .nav-links li a:hover {
                background: var(--color-primary-light);
            }

            .nav-links li.active a {
                background: var(--color-primary-light);
                color: var(--color-primary);
            }

            .nav-cta {
                display: none;
            }

            .brand {
                font-size: 19px;
            }

            .page-banner {
                padding: 72px 0 100px;
            }

            .page-banner h1 {
                font-size: 30px;
                line-height: 1.35;
            }

            .page-banner p {
                font-size: 15px;
            }

            .section-head {
                margin-bottom: 36px;
            }

            .section-head h2 {
                font-size: 28px;
            }

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

            .overview-media img {
                height: 260px;
            }

            .overview-points {
                grid-template-columns: 1fr;
            }

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

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

            .reward-grid {
                grid-template-columns: 1fr;
                max-width: 400px;
                margin: 0 auto;
            }

            .step-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .faq-question {
                padding: 18px 20px;
            }

            .faq-answer {
                padding: 0 20px;
            }

            .cta-inner h2 {
                font-size: 28px;
            }

            .cta-inner p {
                font-size: 15px;
            }

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

            .footer-brand p {
                max-width: 100%;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .page-banner {
                padding: 56px 0 80px;
            }

            .page-banner h1 {
                font-size: 26px;
            }

            .page-banner p {
                font-size: 14px;
            }

            .hero-tags {
                gap: 6px;
            }

            .hero-tags .tag-chip {
                padding: 4px 12px;
                font-size: 12px;
            }

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

            .btn {
                padding: 10px 22px;
                font-size: 14px;
            }

            .btn-large {
                padding: 14px 32px;
                font-size: 15px;
            }

            .strategy-card .card-body {
                padding: 20px 18px 22px;
            }

            .strategy-card .card-media {
                height: 180px;
            }

            .tip-card {
                padding: 22px 20px;
            }

            .reward-card {
                padding: 24px 20px;
            }

            .cta-inner h2 {
                font-size: 24px;
            }

            .footer-grid {
                gap: 24px;
            }

            .footer-links h4,
            .footer-contact h4 {
                margin-bottom: 14px;
            }
        }