/* roulang page: index */
:root {
  --primary: #0e6f68;
  --primary-dark: #0b5752;
  --primary-light: #d7efea;
  --accent: #f5a623;
  --ink: #0f172a;
  --muted: #5b6b7b;
  --bg: #f5f7fb;
  --white: #ffffff;
  --line: #e3e8f0;
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 16px;
  --shadow-1: 0 20px 50px rgba(15, 23, 42, .07);
  --shadow-2: 0 10px 30px rgba(15, 23, 42, .06);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: #fff;
  line-height: 1.75;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
button, input, textarea {
  font-family: inherit;
}
button:focus-visible, a:focus-visible, input:focus-visible {
  outline: 3px solid rgba(245, 166, 35, .45);
  outline-offset: 3px;
}
.container-main {
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}
/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226, 232, 240, .8);
}
.header-inner {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  font-weight: 900;
  letter-spacing: .02em;
}
.brand-name {
  font-size: 21px;
  color: var(--primary);
  line-height: 1.2;
}
.brand-sub {
  font-size: 13px;
  color: var(--muted);
  font-weight: 600;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: #334155;
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--primary);
  background: #f0fdf9;
}
.nav-link.active {
  color: var(--primary);
  background: var(--primary-light);
}
.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 8px 20px rgba(14, 111, 104, .22);
}
.header-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}
.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #fff;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--primary);
}
.mobile-nav {
  display: none;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, .98);
  padding: 12px 20px 18px;
}
.mobile-nav.open {
  display: block;
}
.mobile-link {
  display: block;
  padding: 12px 10px;
  border-radius: 14px;
  color: #334155;
  font-weight: 600;
  font-size: 15px;
}
.mobile-link.active,
.mobile-link:hover {
  color: var(--primary);
  background: #f0fdf9;
}
/* hero */
.hero {
  position: relative;
  overflow: hidden;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background-image: linear-gradient(110deg, #fff 0%, rgba(255,255,255,.96) 30%, rgba(255,255,255,.82) 58%, rgba(245,247,251,.58) 78%), url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
}
.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  padding-top: 56px;
  padding-bottom: 64px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  background: rgba(255, 255, 255, .85);
  border: 1px solid rgba(14, 111, 104, .16);
  border-radius: 999px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
}
.hero-title {
  font-size: clamp(32px, 4.4vw, 54px);
  line-height: 1.2;
  letter-spacing: .02em;
  font-weight: 900;
  color: var(--ink);
  margin: 20px 0 18px;
}
.hero-title span {
  color: var(--primary);
}
.hero-desc {
  font-size: clamp(15px, 1.4vw, 18px);
  color: #475569;
  max-width: 620px;
  margin-bottom: 30px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 36px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  transition: all .2s ease;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 12px 28px rgba(14, 111, 104, .25);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
}
.btn-outline {
  border-color: var(--primary);
  color: var(--primary);
  background: #fff;
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-3px);
}
.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  padding: 18px 24px;
  background: rgba(255, 255, 255, .75);
  border: 1px solid rgba(226, 232, 240, .85);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2);
  max-width: 620px;
}
.hero-point {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: #334155;
}
.hero-point i {
  color: var(--primary);
  font-size: 17px;
}
.hero-visual {
  position: relative;
  min-height: 420px;
}
.hero-media-card {
  position: absolute;
  inset: 4% 2% 6% 10%;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 32px 80px rgba(15, 23, 42, .18);
  border: 6px solid #fff;
  transform: rotate(1deg);
}
.hero-media-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-float {
  position: absolute;
  right: 4%;
  bottom: 8%;
  background: #fff;
  border-radius: 20px;
  padding: 14px 20px;
  box-shadow: var(--shadow-1);
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: #0f172a;
  z-index: 2;
}
.hero-float i {
  color: var(--accent);
}
/* sections */
.section {
  padding: 88px 0;
}
.section-white {
  background: #fff;
}
.section-soft {
  background: var(--bg);
}
.section-dark {
  background: #0b5752;
  color: #fff;
}
.section-head {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
  margin-bottom: 46px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.section-title {
  font-size: clamp(26px, 3.2vw, 40px);
  line-height: 1.3;
  font-weight: 900;
}
.section-desc {
  color: var(--muted);
  max-width: 720px;
  font-size: 16px;
}
.service-card {
  background: #fff;
  border: 1px solid #edf1f7;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-2);
  display: block;
  height: 100%;
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 22px 45px rgba(15, 23, 42, .1);
}
.service-card-img {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
}
.service-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.service-card:hover .service-card-img img {
  transform: scale(1.05);
}
.service-tag {
  position: absolute;
  left: 14px;
  top: 14px;
  background: rgba(255, 255, 255, .86);
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
}
.service-card-body {
  padding: 20px 22px 24px;
}
.service-card-body h3 {
  font-size: 19px;
  font-weight: 800;
  margin-bottom: 8px;
}
.service-card-body p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 14px;
}
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 700;
  font-size: 14px;
}
.link-arrow:hover {
  gap: 12px;
}
/* stat panel */
.stats-wrap {
  background-image: linear-gradient(135deg, rgba(11, 87, 82, .96), rgba(14, 111, 104, .92)), url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  border-radius: var(--radius-xl);
  padding: 52px 40px;
  color: #fff;
  box-shadow: 0 28px 70px rgba(14, 111, 104, .22);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 28px;
}
.stat-item {
  text-align: center;
  padding: 16px 14px;
  border-radius: 20px;
  background: rgba(255, 255, 255, .08);
}
.stat-item i {
  font-size: 30px;
  color: #fff;
  margin-bottom: 12px;
}
.stat-number {
  font-size: 32px;
  font-weight: 900;
  line-height: 1.2;
  display: block;
}
.stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, .85);
  margin-top: 6px;
}
/* content highlight card */
.content-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  border: 1px solid #edf1f7;
  box-shadow: var(--shadow-2);
  height: 100%;
}
.content-card:hover {
  box-shadow: var(--shadow-1);
  transform: translateY(-4px);
}
.content-card-img {
  height: 190px;
  overflow: hidden;
}
.content-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s;
}
.content-card:hover .content-card-img img {
  transform: scale(1.05);
}
.content-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}
.content-card-body h3 {
  font-size: 19px;
  font-weight: 800;
  line-height: 1.45;
}
.content-card-body p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
  flex: 1;
}
/* latest news */
.news-panel {
  background: #fff;
  border-radius: var(--radius-xl);
  border: 1px solid #edf1f7;
  box-shadow: var(--shadow-2);
  padding: 40px;
}
.news-list {
  display: grid;
  gap: 14px;
}
.news-card {
  display: grid;
  gap: 10px;
  padding: 24px;
  border-radius: 20px;
  border: 1px solid #edf1f7;
  background: #fbfdff;
  transition: background .2s, border-color .2s, transform .2s;
}
.news-card:hover {
  background: #fff;
  border-color: var(--primary);
  transform: translateX(4px);
}
.news-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--muted);
}
.news-badge {
  background: var(--primary-light);
  color: var(--primary);
  padding: 3px 12px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 12px;
}
.news-card h3 {
  font-size: 18px;
  font-weight: 800;
  line-height: 1.5;
}
.news-card h3 a:hover {
  color: var(--primary);
}
.news-card p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.empty-tip {
  text-align: center;
  padding: 44px 10px;
  color: var(--muted);
  background: #f9fbfe;
  border-radius: 18px;
  border: 1px dashed #cbd5e1;
}
/* scene section */
.scene-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}
.scene-img {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-1);
}
.scene-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.scene-list {
  display: grid;
  gap: 16px;
  margin-top: 20px;
}
.scene-item {
  display: flex;
  gap: 14px;
  background: #fff;
  border: 1px solid #edf1f7;
  border-radius: 18px;
  padding: 16px 18px;
  align-items: flex-start;
  box-shadow: 0 6px 20px rgba(15, 23, 42, .04);
}
.scene-item i {
  color: var(--primary);
  font-size: 20px;
  margin-top: 3px;
}
.scene-item strong {
  display: block;
  font-size: 16px;
  margin-bottom: 4px;
}
.scene-item span {
  font-size: 14px;
  color: var(--muted);
}
/* flow */
.flow-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 22px;
  counter-reset: step;
}
.flow-step {
  background: #fff;
  border: 1px solid #edf1f7;
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  position: relative;
  box-shadow: var(--shadow-2);
  transition: transform .2s, box-shadow .2s;
}
.flow-step:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-1);
}
.flow-num {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 18px;
  margin-bottom: 18px;
}
.flow-step h4 {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 8px;
}
.flow-step p {
  color: var(--muted);
  font-size: 14px;
}
/* faq */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: grid;
  gap: 14px;
}
.faq-item {
  background: #fff;
  border: 1px solid #edf1f7;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-2);
}
.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 22px 28px;
  font-size: 17px;
  font-weight: 800;
  color: var(--ink);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  cursor: pointer;
}
.faq-question:hover {
  color: var(--primary);
}
.faq-question i {
  color: var(--primary);
  font-size: 16px;
  transition: transform .2s;
}
.faq-item.open .faq-question i {
  transform: rotate(45deg);
}
.faq-answer {
  display: none;
  padding: 0 28px 24px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}
.faq-item.open .faq-answer {
  display: block;
}
/* CTA */
.cta-panel {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background-image: linear-gradient(115deg, rgba(6, 60, 56, .94), rgba(14, 111, 104, .88)), url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  color: #fff;
  padding: 66px 58px;
  box-shadow: 0 28px 70px rgba(14, 111, 104, .2);
}
.cta-panel h2 {
  font-size: clamp(26px, 3.4vw, 42px);
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 12px;
}
.cta-panel p {
  color: rgba(255, 255, 255, .88);
  max-width: 700px;
  font-size: 16px;
  margin-bottom: 28px;
}
.btn-light {
  background: #fff;
  color: var(--primary-dark);
  font-weight: 800;
  box-shadow: 0 14px 28px rgba(0, 0, 0, .12);
}
.btn-light:hover {
  transform: translateY(-3px);
  background: #f0fdf9;
}
.btn-ghost-light {
  border: 1.5px solid #fff;
  color: #fff;
  background: transparent;
}
.btn-ghost-light:hover {
  background: rgba(255,255,255,.15);
  transform: translateY(-3px);
}
.cta-attention {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 13px;
  color: rgba(255,255,255,.85);
  margin-top: 12px;
}
.cta-attention i {
  margin-right: 6px;
  color: var(--accent);
}
/* footer */
.site-footer {
  background: #0c1d24;
  color: #a7b6be;
  font-size: 14px;
  padding-top: 70px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 45px;
  padding-bottom: 45px;
}
.footer-brand-name {
  color: #fff;
  font-weight: 900;
  font-size: 21px;
  display: flex;
  align-items: baseline;
  gap: 6px;
}
.footer-brand-name span {
  color: #6eefe0;
}
.footer-desc {
  margin-top: 16px;
  color: #9aaab2;
  line-height: 1.7;
}
footer h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 800;
  margin-bottom: 15px;
}
.footer-links {
  display: grid;
  gap: 9px;
}
.footer-links a:hover {
  color: #6eefe0;
}
.footer-contact p {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 9px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 20px 0;
  color: #72858e;
  font-size: 13px;
}
.footer-bottom .container-main {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
/* responsive */
@media (max-width: 1024px) {
  .site-nav,
  .header-cta {
    display: none;
  }
  .menu-toggle {
    display: inline-flex;
  }
  .hero {
    min-height: auto;
    background: linear-gradient(125deg, #fff 0%, rgba(255,255,255,.95) 55%, rgba(255,255,255,.75) 80%), url('/assets/images/backpic/back-1.webp');
  }
  .hero-visual {
    min-height: 300px;
  }
  .scene-block {
    grid-template-columns: 1fr;
  }
  .scene-img {
    min-height: 230px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}
@media (max-width: 768px) {
  .section {
    padding: 60px 0;
  }
  .container-main {
    padding-left: 18px;
    padding-right: 18px;
  }
  .news-panel {
    padding: 24px;
  }
  .stats-wrap {
    padding: 32px 20px;
  }
  .cta-panel {
    padding: 40px 24px;
  }
}
@media (max-width: 520px) {
  .header-inner {
    min-height: 66px;
  }
  .brand-name {
    font-size: 18px;
  }
  .brand-sub {
    font-size: 11px;
  }
  .hero-title {
    font-size: 28px;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-points {
    padding: 16px;
    gap: 12px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .news-card {
    padding: 18px;
  }
  .section-head {
    margin-bottom: 30px;
  }
  .cta-attention {
    flex-direction: column;
    gap: 6px;
  }
}

/* roulang page: category1 */
:root {
    --primary: #1f6ff2;
    --primary-dark: #0f4fc0;
    --primary-soft: #ebf2ff;
    --secondary: #19a7b5;
    --accent: #ff9d25;
    --accent-soft: #fff5e8;
    --ink: #0d1b34;
    --muted: #53627d;
    --line: #e3eaf5;
    --bg: #f4f8fd;
    --surface: #ffffff;
    --radius-lg: 28px;
    --radius-md: 18px;
    --radius-sm: 12px;
    --shadow-sm: 0 8px 24px rgba(13, 27, 52, .06);
    --shadow-md: 0 18px 44px rgba(13, 27, 52, .1);
    --shadow-primary: 0 16px 34px rgba(31, 111, 242, .24);
  }

  * {
    box-sizing: border-box;
  }

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

  body {
    margin: 0;
    font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
  }

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

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

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

  .container-main {
    width: min(1220px, 100% - 40px);
    margin-inline: auto;
  }

  .section-space {
    padding-block: clamp(3.2rem, 7vw, 6.2rem);
  }

  .section-title-xl {
    font-size: clamp(1.6rem, 3.4vw, 2.6rem);
    font-weight: 800;
    letter-spacing: -.02em;
    line-height: 1.3;
    margin: 0;
    color: var(--ink);
  }

  .section-title-md {
    font-size: clamp(1.3rem, 2.4vw, 1.8rem);
    font-weight: 800;
    letter-spacing: -.02em;
    line-height: 1.35;
    margin: 0;
    color: var(--ink);
  }

  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-size: .82rem;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--primary);
    background: var(--primary-soft);
    border-radius: 999px;
    padding: .3rem 1rem;
    margin-bottom: 1rem;
  }

  .eyebrow::before {
    content: "";
    width: .4rem;
    height: .4rem;
    border-radius: 50%;
    background: var(--primary);
  }

  .lead-text {
    color: var(--muted);
    font-size: 1.02rem;
    line-height: 1.85;
  }

  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, .82);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(227, 234, 245, .8);
  }

  .header-inner {
    display: flex;
    align-items: center;
    gap: 1.4rem;
    min-height: 74px;
  }

  .brand-logo {
    display: flex;
    align-items: center;
    gap: .25rem;
    font-weight: 800;
    font-size: 1.18rem;
    letter-spacing: -.02em;
    color: var(--ink);
    white-space: nowrap;
    flex-shrink: 0;
    transition: opacity .2s ease;
  }

  .brand-logo span {
    color: var(--primary);
  }

  .brand-logo:hover {
    opacity: .8;
  }

  .site-nav {
    display: flex;
    align-items: center;
    gap: .25rem;
    margin-inline: auto;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }

  .site-nav::-webkit-scrollbar {
    display: none;
  }

  .site-nav .nav-link {
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
    padding: .5rem .9rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: .96rem;
    color: var(--muted);
    transition: background .2s ease, color .2s ease, transform .2s ease;
  }

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

  .site-nav .nav-link.active {
    color: #fff;
    background: linear-gradient(135deg, var(--primary), #4a8cff);
    box-shadow: 0 10px 22px rgba(31, 111, 242, .22);
  }

  .header-tools {
    display: flex;
    align-items: center;
    gap: .75rem;
    flex-shrink: 0;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    padding: .75rem 1.35rem;
    border-radius: 999px;
    font-weight: 700;
    font-size: .95rem;
    line-height: 1.4;
    border: 2px solid transparent;
    cursor: pointer;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
  }

  .btn:focus-visible,
  .site-nav .nav-link:focus-visible,
  a:focus-visible {
    outline: 3px solid rgba(31, 111, 242, .4);
    outline-offset: 3px;
  }

  .btn-primary {
    background: linear-gradient(135deg, var(--primary), #2b7cff);
    color: #fff;
    box-shadow: 0 12px 28px rgba(31, 111, 242, .28);
  }

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

  .btn-primary:active {
    transform: translateY(0);
  }

  .btn-ghost {
    background: transparent;
    color: var(--ink);
    border-color: #cdd9ea;
  }

  .btn-ghost:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: #fff;
    transform: translateY(-2px);
  }

  .btn-sm {
    padding: .45rem 1.05rem;
    font-size: .9rem;
  }

  .btn-lg {
    padding: .9rem 1.8rem;
    font-size: 1.02rem;
  }

  .hero-category {
    position: relative;
    overflow: hidden;
    background:
      linear-gradient(120deg, rgba(6, 20, 51, .94) 20%, rgba(8, 31, 70, .76) 60%, rgba(15, 50, 98, .55)),
      url("/assets/images/backpic/back-2.webp") center center / cover no-repeat;
    color: #fff;
    padding-block: clamp(3.2rem, 7vw, 6.6rem);
  }

  .hero-grid {
    display: grid;
    grid-template-columns: 1.05fr .9fr;
    gap: 2.5rem;
    align-items: center;
  }

  .hero-copy h1 {
    margin-top: .7rem;
    margin-bottom: 1.2rem;
    font-size: clamp(2rem, 4.6vw, 3.8rem);
    line-height: 1.22;
    letter-spacing: -.035em;
    font-weight: 900;
  }

  .hero-accent {
    background: linear-gradient(92deg, #d5e6ff, #83d0ff 55%, #ffe1a4);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }

  .hero-copy .lead {
    color: rgba(255, 255, 255, .82);
    font-size: 1.08rem;
    max-width: 35rem;
    margin-bottom: 1.6rem;
  }

  .hero-stat-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1.2rem 2rem;
    margin-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, .18);
    padding-top: 1.2rem;
  }

  .hero-stat-row strong {
    display: block;
    font-size: 1.45rem;
    font-weight: 800;
  }

  .hero-stat-row span {
    color: rgba(255, 255, 255, .85);
    font-size: .88rem;
  }

  .hero-visual {
    position: relative;
  }

  .hero-visual img {
    border-radius: var(--radius-lg);
    box-shadow: 0 30px 60px rgba(0, 0, 0, .3);
    aspect-ratio: 4 / 3;
    object-fit: cover;
    width: 100%;
    transform: rotate(1.2deg);
  }

  .hero-note {
    position: absolute;
    left: -12px;
    bottom: 18px;
    background: rgba(255, 255, 255, .92);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-radius: 18px;
    padding: 1rem 1.2rem;
    box-shadow: var(--shadow-md);
    color: var(--ink);
    max-width: 280px;
    transform: rotate(-1deg);
  }

  .hero-note strong {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-size: .95rem;
    color: var(--primary);
  }

  .hero-note p {
    margin: .3rem 0 0;
    font-size: .86rem;
    color: var(--muted);
    line-height: 1.6;
  }

  .category-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  }

  .category-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: #cfe0fa;
  }

  .category-card .image-wrap {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4 / 3;
  }

  .category-card .image-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
  }

  .category-card:hover .image-wrap img {
    transform: scale(1.06);
  }

  .category-card .tag-badge {
    position: absolute;
    left: 14px;
    top: 14px;
    background: rgba(255, 255, 255, .92);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    color: var(--ink);
    font-size: .78rem;
    font-weight: 700;
    padding: .3rem .9rem;
    border-radius: 999px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, .12);
  }

  .category-card .content-card {
    padding: 1.1rem 1.2rem 1.3rem;
  }

  .category-card h3 {
    font-size: 1.12rem;
    font-weight: 800;
    margin-bottom: .5rem;
    letter-spacing: -.01em;
  }

  .category-card p {
    color: var(--muted);
    font-size: .9rem;
    line-height: 1.75;
    margin: 0 0 .6rem;
  }

  .category-card .mini-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: .45rem;
  }

  .mini-list li {
    background: #f3f7fe;
    color: var(--primary-dark);
    border-radius: 999px;
    padding: .22rem .7rem;
    font-size: .78rem;
    font-weight: 600;
  }

  .feature-card {
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    padding: 1.6rem;
    height: 100%;
    transition: box-shadow .25s ease, transform .25s ease;
  }

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

  .feature-icon {
    width: 52px;
    height: 52px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    border-radius: 16px;
    background: var(--primary-soft);
    color: var(--primary);
    margin-bottom: 1rem;
  }

  .feature-card:nth-child(2) .feature-icon {
    background: var(--accent-soft);
    color: #de7c00;
  }

  .feature-card:nth-child(3) .feature-icon {
    background: #e7faf8;
    color: var(--secondary);
  }

  .feature-card:nth-child(4) .feature-icon {
    background: #f3f0ff;
    color: #7a5af8;
  }

  .steps-bg {
    position: relative;
    background:
      linear-gradient(180deg, #eef5ff 0%, #ffffff 50%, #eef5ff 100%);
  }

  .step-item {
    position: relative;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 1.5rem 1.4rem;
    box-shadow: var(--shadow-sm);
    height: 100%;
    transition: transform .25s ease, box-shadow .25s ease;
  }

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

  .step-num {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), #3c86ff);
    color: #fff;
    font-weight: 800;
    font-size: 1.05rem;
    border-radius: 13px;
    box-shadow: 0 10px 20px rgba(31, 111, 242, .22);
    margin-bottom: 1rem;
  }

  .group-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    min-height: 100%;
    transition: box-shadow .2s ease, border-color .2s ease;
  }

  .group-card:hover {
    border-color: #c9ddfc;
    box-shadow: var(--shadow-md);
  }

  .group-card i {
    color: var(--primary);
    font-size: 1.3rem;
    margin-bottom: .8rem;
  }

  .group-card h3 {
    font-size: 1.06rem;
    font-weight: 800;
  }

  .faq-list details {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 0 1.3rem;
    margin-bottom: .8rem;
    transition: box-shadow .2s ease, border-color .2s ease;
  }

  .faq-list details:hover {
    border-color: #cfdffa;
    box-shadow: var(--shadow-sm);
  }

  .faq-list summary {
    list-style: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.2rem;
    padding: 1.05rem 0;
    font-weight: 700;
    color: var(--ink);
    transition: color .2s ease;
  }

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

  .faq-list summary i {
    color: var(--primary);
    flex-shrink: 0;
    font-size: 1rem;
    transition: transform .2s ease;
  }

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

  .faq-list details[open] summary i {
    transform: rotate(45deg);
  }

  .faq-list .answer {
    color: var(--muted);
    padding: .2rem 0 1.2rem;
    font-size: .96rem;
    line-height: 1.85;
  }

  .cta-panel {
    position: relative;
    border-radius: 36px;
    overflow: hidden;
    background:
      linear-gradient(100deg, rgba(7, 22, 52, .95), rgba(13, 45, 92, .86)),
      url("/assets/images/backpic/back-3.png") center center / cover no-repeat;
    color: #fff;
    padding: clamp(2.4rem, 5.4vw, 4.6rem);
  }

  .cta-panel h2 {
    font-size: clamp(1.6rem, 3vw, 2.3rem);
    font-weight: 900;
    line-height: 1.3;
    letter-spacing: -.02em;
    margin: 0 0 1rem;
  }

  .cta-panel .lead {
    color: rgba(255, 255, 255, .82);
    max-width: 46rem;
    margin-bottom: 1.8rem;
  }

  .site-footer {
    background: #0b1830;
    color: rgba(235, 242, 255, .75);
    margin-top: clamp(3rem, 7vw, 5.6rem);
  }

  .site-footer .container-main.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 2.5rem;
    padding-top: clamp(2.8rem, 5vw, 4.4rem);
    padding-bottom: 2.4rem;
  }

  .footer-brand-name {
    font-weight: 800;
    font-size: 1.28rem;
    color: #fff;
    display: inline-block;
    margin-bottom: .5rem;
  }

  .footer-brand-name span {
    color: #bcdaff;
  }

  .footer-desc {
    color: rgba(235, 242, 255, .6);
    font-size: .92rem;
    margin: .4rem 0 0;
    max-width: 19rem;
  }

  .footer-grid h4 {
    color: #fff;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: .02em;
  }

  .footer-links {
    display: flex;
    flex-direction: column;
    gap: .6rem;
    font-size: .92rem;
  }

  .footer-links a {
    color: rgba(235, 242, 255, .68);
    transition: color .2s ease, padding-left .2s ease;
  }

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

  .footer-contact p {
    margin: .5rem 0;
    font-size: .92rem;
  }

  .footer-contact i {
    color: #7eb5ff;
    width: 1.25rem;
    margin-right: .2rem;
  }

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .1);
    padding: 1.2rem 0;
  }

  .footer-bottom .container-main {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: .6rem;
    font-size: .82rem;
    color: rgba(235, 242, 255, .5);
  }

  @media (max-width: 1080px) {
    .container-main {
      width: min(1220px, 100% - 30px);
    }

    .hero-grid {
      grid-template-columns: 1fr .85fr;
    }
  }

  @media (max-width: 992px) {
    .header-inner {
      flex-wrap: wrap;
      gap: .4rem 1rem;
      padding-block: .7rem;
    }

    .site-nav {
      order: 3;
      width: 100%;
      margin: 0;
      overflow-x: auto;
      padding-bottom: .2rem;
    }

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

    .hero-visual {
      max-width: 560px;
    }

    .site-footer .container-main.footer-grid {
      grid-template-columns: 1fr 1fr;
      gap: 2rem;
    }
  }

  @media (max-width: 640px) {
    .container-main {
      width: calc(100% - 24px);
    }

    .header-tools {
      display: none;
    }

    .brand-logo {
      font-size: 1rem;
    }

    .hero-note {
      position: static;
      margin-top: 1rem;
      transform: none;
      max-width: none;
    }

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

    .btn-lg {
      width: 100%;
    }

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

/* roulang page: article */
:root {
  --primary: #0b63ce;
  --primary-dark: #084a9e;
  --primary-soft: #eaf2ff;
  --accent: #17a37e;
  --accent-soft: #eaf9f4;
  --dark: #101f33;
  --text: #1f2d3d;
  --muted: #5d7188;
  --soft-bg: #f5f8fd;
  --surface: #ffffff;
  --border: #dce7f3;
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --shadow-md: 0 14px 36px rgba(20, 45, 80, 0.10);
  --shadow-lg: 0 24px 70px rgba(20, 45, 80, 0.16);
  --transition: all .25s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--soft-bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

button,
input {
  font-family: inherit;
}

.container-main {
  max-width: 1240px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(220, 231, 243, 0.8);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 78px;
}

.brand-logo {
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
  flex-shrink: 0;
  font-size: 1.38rem;
  font-weight: 900;
  color: var(--primary);
  letter-spacing: -0.01em;
  position: relative;
  z-index: 2;
}

.brand-logo span {
  font-size: .98rem;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: .02em;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex-wrap: nowrap;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 10px 16px;
  border-radius: 999px;
  font-size: .95rem;
  font-weight: 700;
  color: #30445f;
  transition: var(--transition);
  white-space: nowrap;
}

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

.nav-link.active {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 10px 24px rgba(11, 99, 206, 0.28);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 0;
  border-radius: 999px;
  padding: 13px 24px;
  font-weight: 700;
  font-size: .96rem;
  line-height: 1;
  cursor: pointer;
  transition: var(--transition);
  background: transparent;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 12px 26px rgba(11, 99, 206, 0.22);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 18px 34px rgba(11, 99, 206, 0.30);
}

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

.btn-white:hover {
  transform: translateY(-2px);
  background: #f2f7ff;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.22);
}

.btn-outline-light {
  border: 1.5px solid rgba(255, 255, 255, .85);
  color: #ffffff;
  background: rgba(255, 255, 255, .08);
}

.btn-outline-light:hover {
  background: #ffffff;
  color: var(--primary-dark);
  transform: translateY(-2px);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--primary);
  font-size: 1.1rem;
  cursor: pointer;
  transition: var(--transition);
}

.nav-toggle:hover {
  background: var(--primary-soft);
  transform: rotate(90deg);
}

.article-hero {
  position: relative;
  isolation: isolate;
  display: flex;
  align-items: flex-end;
  min-height: 400px;
  padding: 72px 0 56px;
  color: #fff;
  overflow: hidden;
}

.article-hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-size: cover;
  background-position: center;
}

.article-hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(7, 19, 38, 0.92) 0%, rgba(7, 31, 62, 0.76) 44%, rgba(8, 58, 120, 0.55) 100%);
}

.article-hero-inner {
  position: relative;
  z-index: 2;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: .92rem;
  font-weight: 600;
  color: rgba(255, 255, 255, .82);
  margin-bottom: 20px;
}

.breadcrumb i {
  font-size: .72rem;
  opacity: .7;
}

.breadcrumb a:hover {
  color: #fff;
  text-decoration: underline;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, .16);
  border: 1px solid rgba(255, 255, 255, .25);
  backdrop-filter: blur(8px);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: .86rem;
  font-weight: 700;
  color: #eef6ff;
  margin-bottom: 18px;
}

.article-hero-title {
  max-width: 980px;
  font-size: clamp(2rem, 4.6vw, 3.4rem);
  line-height: 1.22;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  text-wrap: balance;
}

.article-hero-lead {
  max-width: 800px;
  font-size: 1.07rem;
  line-height: 1.9;
  color: rgba(255, 255, 255, .92);
}

.entry-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  color: rgba(255, 255, 255, .9);
  font-size: .94rem;
}

.entry-meta span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.entry-meta i {
  color: #b9d9ff;
}

.article-main {
  padding-top: 28px;
  padding-bottom: 28px;
}

.article-sheet {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  padding: clamp(28px, 5vw, 64px);
}

.cms-content {
  font-size: 1.08rem;
  line-height: 2;
  color: #2a3c52;
}

.cms-content p {
  margin-bottom: 1.6em;
}

.cms-content h2,
.cms-content h3,
.cms-content h4 {
  color: var(--dark);
  font-weight: 800;
  line-height: 1.4;
  margin-top: 1.6em;
  margin-bottom: .6em;
}

.cms-content h2 {
  font-size: 1.75rem;
  position: relative;
  padding-left: 16px;
}

.cms-content h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 5px;
  border-radius: 10px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
}

.cms-content h3 {
  font-size: 1.35rem;
}

.cms-content a {
  color: var(--primary);
  border-bottom: 1px dashed rgba(11, 99, 206, .45);
  transition: var(--transition);
}

.cms-content a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.cms-content ul,
.cms-content ol {
  padding-left: 1.25em;
  margin: 1.2em 0 1.6em;
}

.cms-content ul li,
.cms-content ol li {
  margin-bottom: .45em;
}

.cms-content img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  margin: 1.8em 0;
}

.cms-content blockquote {
  border-left: 4px solid var(--accent);
  background: var(--accent-soft);
  padding: 18px 24px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: #28423c;
  margin: 1.6em 0;
}

.cms-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.6em 0;
}

.cms-content th,
.cms-content td {
  padding: 12px 16px;
  border: 1px solid var(--border);
  text-align: left;
}

.cms-content th {
  background: var(--soft-bg);
  font-weight: 800;
  color: var(--dark);
}

.not-found {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  padding: 60px 36px;
  text-align: center;
}

.not-found i {
  font-size: 3.2rem;
  color: var(--primary);
  opacity: .5;
  margin-bottom: 20px;
}

.not-found p {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 520px;
  margin: 0 auto 30px;
}

.section {
  padding: 78px 0;
}

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

.section-white {
  background: #ffffff;
}

.section-accent {
  background: linear-gradient(135deg, #eaf2ff 0%, #f0fbf9 100%);
}

.section-head {
  max-width: 860px;
  margin-bottom: 44px;
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 700;
  font-size: .84rem;
  letter-spacing: .12em;
  padding: 8px 16px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.section-title {
  font-size: clamp(1.9rem, 3vw, 2.6rem);
  font-weight: 900;
  color: var(--dark);
  line-height: 1.28;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-desc {
  color: var(--muted);
  font-size: 1.06rem;
  line-height: 1.9;
}

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

.card-grid.four-col {
  grid-template-columns: repeat(4, 1fr);
}

.feature-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 30px 26px;
  box-shadow: 0 10px 26px rgba(20, 45, 80, .07);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 14px;
  height: 100%;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(11, 99, 206, .28);
  box-shadow: var(--shadow-lg);
}

.feat-icon {
  width: 54px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 18px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 1.45rem;
}

.feat-icon.green {
  background: var(--accent-soft);
  color: var(--accent);
}

.feat-icon.orange {
  background: #fff3e0;
  color: #db7500;
}

.feat-icon.purple {
  background: #f3eefe;
  color: #7e50d4;
}

.feature-card h3 {
  color: var(--dark);
  font-size: 1.22rem;
  font-weight: 800;
  line-height: 1.45;
}

.feature-card p {
  color: var(--muted);
  font-size: .97rem;
  line-height: 1.8;
  margin: 0;
}

.channel-card {
  position: relative;
  display: block;
  border-radius: 26px;
  overflow: hidden;
  color: #fff;
  min-height: 330px;
  background-size: cover;
  background-position: center;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.channel-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 20, 38, .08) 15%, rgba(4, 12, 28, .88) 100%);
}

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

.channel-card-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 30px;
  min-height: 330px;
}

.channel-card-inner h3 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.channel-card-inner p {
  color: rgba(255, 255, 255, .87);
  font-size: .95rem;
  line-height: 1.7;
  margin: 0 0 16px;
}

.channel-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .9rem;
  font-weight: 700;
}

.cta-panel {
  position: relative;
  border-radius: 34px;
  overflow: hidden;
  padding: clamp(40px, 7vw, 90px) clamp(24px, 6vw, 80px);
  color: #fff;
  background-size: cover;
  background-position: center;
  box-shadow: var(--shadow-lg);
}

.cta-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(7, 22, 46, 0.95) 15%, rgba(10, 57, 111, 0.78) 100%);
}

.cta-panel-inner {
  position: relative;
  z-index: 2;
  max-width: 860px;
}

.cta-panel .section-eyebrow {
  background: rgba(255, 255, 255, .18);
  color: #fff;
}

.cta-panel .section-title {
  color: #fff;
}

.cta-panel .section-desc {
  color: rgba(255, 255, 255, .85);
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.badge-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.badge-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(255, 255, 255, .18);
  padding: 16px 18px;
  border-radius: 16px;
  font-size: .92rem;
  font-weight: 700;
}

.badge-item i {
  color: #ffd479;
  font-size: 1.2rem;
}

.faq-wrap {
  max-width: 1000px;
  margin: 0 auto;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 20px;
  margin-bottom: 14px;
  box-shadow: 0 8px 22px rgba(20, 45, 80, .06);
  transition: var(--transition);
  overflow: hidden;
}

.faq-item[open] {
  border-color: rgba(11, 99, 206, .28);
  box-shadow: 0 18px 48px rgba(20, 45, 80, .12);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 26px;
  cursor: pointer;
  font-weight: 800;
  color: var(--dark);
  font-size: 1.05rem;
  list-style: none;
}

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

.faq-item summary i {
  color: var(--primary);
  transition: transform .28s ease;
}

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

.faq-body {
  padding: 0 26px 24px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.9;
}

.site-footer {
  background: #0b1929;
  color: #a9bad0;
  padding-top: 68px;
  margin-top: 70px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.7fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding-bottom: 40px;
}

.footer-brand-name {
  display: inline-flex;
  align-items: baseline;
  gap: 3px;
  font-size: 1.35rem;
  font-weight: 900;
  color: #ffffff;
  margin-bottom: 16px;
}

.footer-brand-name span {
  font-weight: 800;
  font-size: .98rem;
  color: #7db6ff;
}

.footer-desc {
  font-size: .96rem;
  line-height: 1.9;
  color: #8ca2bb;
  max-width: 340px;
  margin: 0;
}

.site-footer h4 {
  color: #ffffff;
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: 18px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: .95rem;
}

.footer-links a {
  transition: var(--transition);
}

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

.footer-contact p {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: .94rem;
  margin-bottom: 12px;
  color: #8ca2bb;
}

.footer-contact i {
  color: #5aa4ff;
  margin-top: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 20px 0;
  font-size: .9rem;
  color: #7089a5;
}

.footer-bottom .container-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

@media (max-width: 1100px) {
  .card-grid.four-col {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 980px) {
  .site-nav {
    position: fixed;
    inset: 78px 16px auto 16px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 22px;
    padding: 16px;
    gap: 8px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-14px);
    opacity: 0;
    pointer-events: none;
    transition: all .25s ease;
  }

  .site-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-link {
    justify-content: center;
    padding: 13px 16px;
    border-radius: 14px;
  }

  .header-side {
    display: none;
  }

  .nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .article-hero {
    min-height: 340px;
    padding: 50px 0 42px;
  }

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

@media (max-width: 768px) {
  .section {
    padding: 60px 0;
  }

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

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

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

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

  .article-sheet {
    padding: 24px 20px;
  }

  .article-hero-title {
    font-size: 2rem;
  }

  .footer-bottom .container-main {
    flex-direction: column;
    align-items: center;
  }
}

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

  .brand-logo {
    font-size: 1.18rem;
  }

  .brand-logo span {
    font-size: .85rem;
  }

  .section-head {
    margin-bottom: 28px;
  }

  .entry-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .faq-item summary {
    padding: 18px;
    font-size: .98rem;
  }

  .faq-body {
    padding: 0 18px 20px;
  }

  .btn {
    width: 100%;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: stretch;
  }
}

/* roulang page: category3 */
:root {
            --primary: #2F6B5E;
            --primary-light: #3E8F7A;
            --primary-bg: #EAF3F0;
            --accent: #E3A15C;
            --accent-light: #FFF3E4;
            --ink: #243B37;
            --ink-soft: #55726B;
            --ink-faint: #88A39D;
            --surface: #FFFFFF;
            --bg: #F7FAF9;
            --line: #E2ECE9;
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-1: 0 12px 34px rgba(36, 59, 55, .06);
            --shadow-2: 0 20px 60px rgba(36, 59, 55, .10);
        }
        *,
        *:before,
        *:after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", system-ui, -apple-system, sans-serif;
            background: var(--bg);
            color: var(--ink);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: all .2s ease;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(63, 143, 122, .45);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container-main {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header */
        .site-header {
            background: rgba(255, 255, 255, .93);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--line);
            padding: 0 24px;
            height: 64px;
            display: flex;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 80;
        }
        .header-inner {
            max-width: 1280px;
            width: 100%;
            margin: 0 auto;
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .brand-logo {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: -0.3px;
            white-space: nowrap;
            color: var(--ink);
            display: flex;
            align-items: baseline;
            gap: 4px;
            transition: opacity .2s;
        }
        .brand-logo span {
            font-weight: 400;
            font-size: 13px;
            color: var(--primary);
            background: var(--primary-bg);
            padding: 3px 8px;
            border-radius: 999px;
            margin-left: 2px;
        }
        .brand-logo:hover {
            opacity: .8;
        }
        .site-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-right: auto;
            overflow-x: auto;
            scrollbar-width: none;
            flex: 1;
        }
        .site-nav::-webkit-scrollbar {
            display: none;
        }
        .nav-link {
            padding: 8px 14px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--ink-soft);
            white-space: nowrap;
            border: 1px solid transparent;
            transition: all .2s ease;
        }
        .nav-link:hover {
            background: var(--primary-bg);
            color: var(--primary);
        }
        .nav-link.active {
            background: var(--primary);
            color: #fff;
        }
        .header-action {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }
        .header-link {
            font-size: 14px;
            color: var(--ink-soft);
            font-weight: 500;
        }
        .header-link:hover {
            color: var(--primary);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            border-radius: 999px;
            padding: 10px 26px;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all .25s ease;
            line-height: 1.5;
            background: transparent;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 16px rgba(47, 107, 94, .18);
        }
        .btn-primary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 12px 26px rgba(47, 107, 94, .22);
        }
        .btn-outline {
            border-color: var(--line);
            color: var(--secondary);
            background: #fff;
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-bg);
        }
        .btn-accent {
            background: var(--accent);
            color: #3A2A13;
            box-shadow: 0 8px 22px rgba(227, 161, 92, .28);
        }
        .btn-accent:hover {
            background: #F0B876;
            transform: translateY(-2px);
        }

        /* Hero */
        .hero-section {
            background: linear-gradient(135deg, #F0F7F4 0%, #E3F0F1 50%, #FAF4E8 100%);
            padding: 72px 0 20px;
            position: relative;
            overflow: hidden;
        }
        .hero-section:before {
            content: "";
            position: absolute;
            inset: 0;
            background: url(/assets/images/backpic/back-1.webp) right center/cover no-repeat;
            opacity: .10;
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 7fr 5fr;
            align-items: center;
            gap: 44px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .7);
            border: 1px solid rgba(47, 107, 94, .18);
            border-radius: 999px;
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }
        .hero-title {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.5px;
            color: var(--ink);
            margin-bottom: 16px;
        }
        .hero-title em {
            font-style: normal;
            color: var(--primary);
            border-bottom: 4px solid rgba(227, 161, 92, .4);
        }
        .hero-sub {
            font-size: 18px;
            line-height: 1.8;
            color: var(--ink-soft);
            max-width: 540px;
            margin-bottom: 28px;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 20px;
            align-items: center;
            font-size: 14px;
            color: var(--ink-soft);
        }
        .hero-meta i {
            color: var(--primary);
            margin-right: 5px;
        }
        .hero-media {
            position: relative;
            z-index: 2;
            display: flex;
            justify-content: center;
        }
        .hero-card-float {
            background: #fff;
            border-radius: 22px;
            max-width: 420px;
            width: 100%;
            padding: 24px;
            box-shadow: var(--shadow-2);
            border: 1px solid rgba(255, 255, 255, .8);
        }
        .hero-card-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .hero-card-title i {
            color: var(--accent);
            margin-right: 4px;
        }
        .hero-card-list {
            list-style: none;
        }
        .hero-card-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            padding: 6px 0;
            color: var(--ink-soft);
            border-bottom: 1px dashed var(--line);
        }
        .hero-card-list li:last-child {
            border-bottom: none;
        }
        .hero-card-list i {
            color: var(--primary);
            font-size: 12px;
        }
        .hero-card-inner-img {
            margin-top: 14px;
            border-radius: 14px;
            overflow: hidden;
            max-height: 170px;
        }
        .hero-card-inner-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hero-cta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 14px 18px;
            margin-top: 30px;
        }

        /* Section */
        .section {
            padding: 70px 0;
        }
        .section-sm {
            padding: 48px 0;
        }
        .section-alt {
            background: var(--surface);
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-bg);
            border-radius: 999px;
            padding: 6px 14px;
            margin-bottom: 18px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 12px;
            color: var(--ink);
            letter-spacing: -0.3px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--ink-soft);
            max-width: 640px;
            margin-bottom: 36px;
        }

        /* 上方卡片群 */
        .card-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 22px;
        }
        .card-grid.cols-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .card-grid.cols-3 {
            grid-template-columns: repeat(3, 1fr);
        }
        .course-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, .02);
            border: 1px solid var(--line);
            transition: transform .3s ease, box-shadow .3s ease;
            display: flex;
            flex-direction: column;
        }
        .course-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-1);
        }
        .course-icon {
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 16px;
            font-size: 22px;
            color: var(--primary);
            background: var(--primary-bg);
            margin-bottom: 18px;
        }
        .course-icon.accent-icon {
            background: var(--accent-light);
            color: #B5741B;
        }
        .course-card h3 {
            font-size: 19px;
            margin-bottom: 8px;
            font-weight: 700;
        }
        .course-card p {
            font-size: 14px;
            color: var(--ink-soft);
            line-height: 1.75;
            flex: 1;
        }
        .course-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 6px 10px;
            margin-top: 16px;
            font-size: 12px;
            color: var(--ink-faint);
        }

        /* Course steps */
        .steps-row {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .steps-row .step-item {
            background-color: #fff;
            border-radius: 999px;
            border: 1px solid var(--line);
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 500;
            color: var(--ink-soft);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .steps-row .step-item i {
            color: var(--primary);
        }

        /* 大图图文区 */
        .media-split {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .media-split-reverse {
            direction: rtl;
        }
        .media-split-reverse>* {
            direction: ltr;
        }
        .media-figure {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-2);
        }
        .media-figure img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }
        .media-content {
            max-width: 520px;
        }
        .media-content h2 {
            font-size: 28px;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 15px;
        }
        .media-content p {
            color: var(--ink-soft);
            margin-bottom: 18px;
        }
        .feature-list {
            list-style: none;
            margin: 18px 0;
        }
        .feature-list li {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            padding: 6px 0;
            font-size: 15px;
        }
        .feature-list li i {
            color: var(--primary);
            margin-right: 4px;
            line-height: 26px;
        }

        /* 徽章组 */
        .chip-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .chip {
            background: var(--surface);
            border: 1px solid var(--line);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            color: var(--ink-soft);
            transition: all .2s;
        }
        .chip:hover {
            border-color: var(--primary);
            background: var(--primary-bg);
            color: var(--primary);
        }
        .chip.is-active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* 图片统计区 */
        .stats-wrap {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
            text-align: center;
        }
        .stat-number {
            font-size: 34px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-number span {
            font-size: 16px;
        }
        .stat-label {
            font-size: 14px;
            color: var(--ink-soft);
            margin-top: 6px;
        }

        /* FAQ */
        .faq-wrap {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 1000px;
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 0;
            overflow: hidden;
            transition: box-shadow .3s;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-1);
        }
        .faq-q {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 22px;
            text-align: left;
            font-size: 16px;
            font-weight: 650;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            color: var(--ink);
            font-family: inherit;
        }
        .faq-q .fa-icon {
            color: var(--accent);
            font-size: 20px;
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
        }
        .faq-q:hover {
            color: var(--primary);
        }
        .faq-a {
            padding: 0 22px;
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .3s ease;
        }
        .faq-a-inner {
            padding-bottom: 20px;
            color: var(--ink-soft);
            font-size: 14px;
            line-height: 1.8;
        }
        .faq-item.active .faq-q {
            color: var(--primary);
        }
        .faq-item.active .fa-icon {
            transform: rotate(180deg);
        }
        .faq-item.active .faq-a {
            max-height: 220px;
            padding-top: 0;
        }

        /* CTA */
        .cta-box {
            background: var(--ink);
            border-radius: 24px;
            position: relative;
            overflow: hidden;
            padding: 58px 48px;
            color: #fff;
            background-image: url(/assets/images/backpic/back-2.webp);
            background-size: cover;
            background-position: center;
        }
        .cta-box:before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(24, 49, 44, .93), rgba(39, 84, 76, .78));
        }
        .cta-content {
            position: relative;
            z-index: 2;
        }
        .cta-title {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 14px;
            line-height: 1.3;
        }
        .cta-desc {
            opacity: .9;
            margin-bottom: 28px;
            max-width: 600px;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--ink-faint);
            margin-bottom: 14px;
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            color: var(--ink);
        }
        .breadcrumb .sep {
            opacity: .5;
        }

        /* Footer */
        .site-footer {
            background: #162820;
            color: #C2D2B8;
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr repeat(3, 1fr);
            gap: 32px;
        }
        .footer-brand-name {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.2px;
        }
        .footer-brand-name span {
            font-size: 13px;
            font-weight: 400;
        }
        .footer-desc {
            font-size: 14px;
            margin-top: 18px;
            color: #99B0A0;
            line-height: 1.8;
        }
        .site-footer h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: .05em;
            text-transform: none;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            color: #9BAFA2;
            font-size: 14px;
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 3px;
        }
        .footer-contact p {
            font-size: 14px;
            color: #8DA79A;
            padding: 4px 0;
        }
        .footer-contact i {
            width: 22px;
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            margin-top: 48px;
            padding: 18px 0;
            font-size: 13px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            color: #708979;
        }
        .footer-bottom .container-main {
            display: flex;
            justify-content: space-between;
            width: 100%;
            flex-wrap: wrap;
            gap: 8px 16px;
        }
        .footer-bottom a {
            color: inherit;
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* 响应式 */
        @media (min-width: 1200px) {
            .hero-title {
                font-size: 46px;
            }
        }
        @media (max-width: 1024px) {
            .hero-section {
                padding: 60px 0 10px;
            }
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .hero-sub {
                max-width: 100%;
            }
            .hero-card-float {
                max-width: 100%;
            }
            .media-split,
            .media-split-reverse {
                grid-template-columns: 1fr;
                direction: ltr;
            }
            .media-figure img {
                min-height: 260px;
            }
            .card-grid.cols-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-wrap {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .cta-box {
                padding: 46px 32px;
            }
        }
        @media (max-width: 768px) {
            .site-header {
                height: auto;
                padding: 10px 16px;
                align-items: flex-start;
                flex-direction: column;
                gap: 10px;
            }
            .header-inner {
                flex-wrap: wrap;
                gap: 12px;
            }
            .site-nav {
                width: 100%;
                order: 3;
                padding-bottom: 4px;
                border-top: 1px solid var(--line);
                padding-top: 8px;
            }
            .nav-link:nth-child(1) {
                margin-left: 0;
            }
            .brand-logo {
                font-size: 18px;
            }
            .header-action .btn {
                font-size: 13px;
                padding: 8px 16px;
            }
            .hero-section {
                padding: 48px 0 10px;
            }
            .hero-title {
                font-size: 32px;
            }
            .hero-sub {
                font-size: 15px;
            }
            .hero-badge {
                font-size: 12px;
                padding: 4px 10px;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 28px;
            }
            .card-grid.cols-3,
            .card-grid.cols-2 {
                grid-template-columns: 1fr;
            }
            .course-card {
                padding: 20px 18px;
            }
            .cta-box {
                padding: 36px 28px;
                border-radius: 18px;
            }
            .cta-title {
                font-size: 27px;
            }
            .faq-q {
                font-size: 15px;
                padding: 16px 16px;
            }
        }
        @media (max-width: 520px) {
            .site-header {
                padding: 10px 10px 0;
            }
            .header-inner {
                gap: 8px;
            }
            .header-link {
                display: none;
            }
            .hero-card-float {
                padding: 16px;
            }
            .media-content h2 {
                font-size: 24px;
            }
            .hero-cta-row .btn {
                width: 100%;
            }
            .stats-wrap {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom .container-main {
                justify-content: center;
                text-align: center;
            }
            .faq-a {
                font-size: 13px;
            }
        }

/* roulang page: category4 */
:root {
      --primary: #16a34a;
      --primary-dark: #15803d;
      --primary-light: #dcfce7;
      --bg: #f8fafc;
      --body: #0f172a;
      --muted: #64748b;
      --border: #e2e8f0;
      --soft: #f1f5f9;
      --white: #ffffff;
      --radius: 24px;
      --shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);
      --shadow: 0 8px 30px rgba(2, 6, 23, .08);
      --shadow-lg: 0 24px 50px rgba(2, 6, 23, .12);
      --container: 1240px;
      --header-height: 76px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: 'Inter', system-ui, -apple-system, "Segoe UI", Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
      font-size: 16px;
      line-height: 1.7;
      color: var(--body);
      background: var(--bg);
    }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; display: block; }
    button { font-family: inherit; cursor: pointer; }
    ul { list-style: none; margin: 0; padding: 0; }
    a:focus-visible, button:focus-visible, summary:focus-visible {
      outline: 3px solid rgba(22, 163, 74, .45);
      outline-offset: 3px;
      border-radius: 8px;
    }
    .container-main { max-width: var(--container); margin: 0 auto; padding-left: 24px; padding-right: 24px; }
    .section-padding { padding: 100px 0; }
    .section-soft { background: var(--soft); }
    .section-dark { background: #020617; color: #e2e8f0; }
    .section-head { max-width: 760px; margin-bottom: 48px; }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: var(--primary-light);
      color: var(--primary-dark);
      border-radius: 999px;
      padding: 8px 18px;
      font-weight: 700;
      font-size: 13px;
      letter-spacing: .06em;
    }
    .section-title {
      font-size: clamp(30px, 4vw, 44px);
      line-height: 1.2;
      margin: 14px 0 12px;
      font-weight: 800;
      letter-spacing: -0.02em;
      color: var(--body);
    }
    .section-desc { color: var(--muted); font-size: 18px; }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, .86);
      -webkit-backdrop-filter: blur(18px);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--border);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: var(--header-height);
      gap: 20px;
    }
    .brand {
      font-weight: 900;
      font-size: clamp(19px, 2vw, 24px);
      color: #0f172a;
      letter-spacing: -0.03em;
      display: flex;
      flex-direction: column;
      line-height: 1.2;
    }
    .brand span {
      color: var(--primary);
      font-weight: 600;
      font-size: 12px;
      letter-spacing: 0.08em;
    }
    .site-nav {
      display: flex;
      align-items: center;
      gap: 8px;
      background: var(--soft);
      padding: 6px;
      border-radius: 999px;
    }
    .nav-link {
      display: inline-block;
      padding: 8px 18px;
      border-radius: 999px;
      font-size: 14px;
      font-weight: 600;
      color: #334155;
      transition: .25s;
      white-space: nowrap;
    }
    .nav-link:hover {
      background: rgba(255, 255, 255, .9);
      color: var(--primary-dark);
      box-shadow: var(--shadow-sm);
    }
    .nav-link.active {
      background: #fff;
      color: var(--primary-dark);
      box-shadow: 0 2px 8px rgba(2, 6, 23, .08);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .user-login-btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      font-weight: 700;
      color: var(--primary-dark);
      background: var(--primary-light);
      border: 0;
      padding: 10px 20px;
      border-radius: 999px;
      transition: .3s;
    }
    .user-login-btn:hover {
      background: var(--primary);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 10px 20px rgba(22, 163, 74, .25);
    }

    @media (min-width: 1025px) {
      .menu-toggle { display: none; }
    }
    @media (max-width: 1024px) {
      .site-nav {
        position: fixed;
        top: calc(var(--header-height) - 2px);
        left: 16px;
        right: 16px;
        display: flex;
        flex-direction: column;
        align-items: stretch;
        background: rgba(255, 255, 255, .98);
        box-shadow: var(--shadow-lg);
        border: 1px solid var(--border);
        border-radius: 20px;
        padding: 14px;
        gap: 10px;
        opacity: 0;
        pointer-events: none;
        transform: translateY(-12px);
        transition: .3s;
        width: auto;
        z-index: 99;
      }
      .site-nav.open {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0);
      }
      .nav-link {
        text-align: center;
        padding: 12px 16px;
      }
      .menu-toggle {
        display: inline-flex;
        width: 44px;
        height: 44px;
        align-items: center;
        justify-content: center;
        background: var(--soft);
        border: 0;
        border-radius: 14px;
        font-size: 20px;
        color: #0f172a;
      }
      .user-login-btn span { display: none; }
      .user-login-btn { padding: 10px 12px; border-radius: 14px; }
    }

    /* Hero */
    .hero-section {
      position: relative;
      padding: 110px 0;
      background-size: cover;
      background-position: center;
      color: #fff;
      overflow: hidden;
    }
    .hero-section::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(105deg, rgba(2, 6, 23, .94) 15%, rgba(2, 6, 23, .82) 45%, rgba(2, 6, 23, .32) 100%);
    }
    .hero-inner {
      position: relative;
      z-index: 2;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 56px;
      align-items: center;
    }
    .hero-title {
      font-size: clamp(38px, 6vw, 64px);
      font-weight: 900;
      line-height: 1.14;
      letter-spacing: -0.03em;
      margin: 18px 0 20px;
    }
    .hero-title span { color: #4ade80; }
    .hero-sub {
      font-size: clamp(17px, 2.2vw, 20px);
      color: #d1d5db;
      max-width: 580px;
      margin-bottom: 32px;
    }
    .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 36px; }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      padding: 14px 28px;
      border-radius: 999px;
      font-weight: 700;
      border: 0;
      transition: .3s;
      font-size: 15px;
    }
    .btn-primary { background: var(--primary); color: #fff; }
    .btn-primary:hover { background: #22c55e; transform: translateY(-3px); box-shadow: 0 14px 28px rgba(22, 163, 74, .35); }
    .btn-ghost { background: rgba(255, 255, 255, .12); color: #fff; border: 1px solid rgba(255, 255, 255, .28); }
    .btn-ghost:hover { background: rgba(255, 255, 255, .24); transform: translateY(-3px); }
    .hero-points { display: flex; flex-wrap: wrap; gap: 10px 22px; color: #d1d5db; font-size: 14px; }
    .hero-points i { margin-right: 6px; color: #4ade80; }
    .hero-visual { position: relative; border-radius: 32px; overflow: hidden; box-shadow: 0 30px 80px rgba(0, 0, 0, .35); }
    .hero-visual img { height: 510px; width: 100%; object-fit: cover; }
    .hero-visual-caption {
      position: absolute;
      left: 16px;
      right: 16px;
      bottom: 16px;
      background: rgba(255, 255, 255, .92);
      border-radius: 20px;
      padding: 18px 22px;
      color: var(--body);
      text-align: left;
      backdrop-filter: blur(6px);
    }
    .hero-visual-caption strong { display: block; font-size: 16px; }
    .hero-visual-caption span { color: var(--muted); font-size: 13px; }

    /* Split */
    .split-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; }
    .split-media { position: relative; border-radius: 28px; overflow: hidden; box-shadow: var(--shadow-lg); }
    .split-media img { width: 100%; height: 100%; min-height: 340px; object-fit: cover; }
    .split-content h3 { font-size: 22px; margin: 0 0 18px; font-weight: 800; }
    .split-content p { color: var(--muted); font-size: 17px; }
    .check-list { margin-top: 22px; }
    .check-list li { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 12px; color: #334155; }
    .check-list i { color: var(--primary); margin-top: 5px; flex-shrink: 0; }
    @media (max-width: 1024px) {
      .split-grid { grid-template-columns: 1fr; gap: 40px; }
      .section-padding { padding: 72px 0; }
      .hero-grid { grid-template-columns: 1fr; gap: 32px; }
      .hero-visual img { height: 400px; }
    }

    /* Levels */
    .level-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
    .level-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 26px;
      padding: 32px 26px;
      box-shadow: var(--shadow-sm);
      transition: .3s;
    }
    .level-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: transparent; }
    .level-icon {
      width: 60px;
      height: 60px;
      border-radius: 18px;
      background: linear-gradient(135deg, var(--primary-light), #bbf7d0);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-dark);
      font-size: 26px;
      margin-bottom: 18px;
    }
    .level-title { font-size: 20px; font-weight: 800; margin: 0; }
    .level-tag {
      display: inline-block;
      margin-top: 8px;
      background: var(--soft);
      color: #475569;
      border-radius: 999px;
      padding: 3px 12px;
      font-size: 12px;
      font-weight: 700;
    }
    .level-list { padding: 16px 0 0; margin-top: 18px; border-top: 1px solid var(--border); }
    .level-list li {
      display: flex;
      gap: 8px;
      align-items: flex-start;
      padding: 6px 0;
      color: var(--muted);
      font-size: 14px;
    }
    .level-list li i { color: var(--primary); font-size: 12px; margin-top: 6px; flex-shrink: 0; }

    /* Feature cards */
    .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
    .feature-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 24px;
      padding: 32px 28px;
      box-shadow: var(--shadow-sm);
      transition: .3s;
      position: relative;
      overflow: hidden;
    }
    .feature-card::after {
      content: "";
      position: absolute;
      width: 100px;
      height: 100px;
      border-radius: 50%;
      background: rgba(22, 163, 74, .06);
      right: -30px;
      bottom: -30px;
      transition: .3s;
    }
    .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
    .feature-icon {
      width: 54px;
      height: 54px;
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: #f0fdf4;
      color: var(--primary);
      font-size: 22px;
      margin-bottom: 20px;
    }
    .feature-card h3 { font-size: 19px; font-weight: 800; margin: 0 0 8px; }
    .feature-card p { color: var(--muted); font-size: 15px; margin: 0; }

    /* Steps */
    .step-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
    .step-item {
      background: rgba(255, 255, 255, .07);
      border: 1px solid rgba(255, 255, 255, .12);
      border-radius: 24px;
      padding: 34px 28px;
      position: relative;
      transition: .3s;
    }
    .step-item:hover { border-color: rgba(74, 222, 128, .5); transform: translateY(-5px); }
    .step-num {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: var(--primary);
      color: #fff;
      font-weight: 900;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
    }
    .step-item h3 { font-size: 18px; font-weight: 800; margin: 0 0 8px; color: #fff; }
    .step-item p { color: #94a3b8; font-size: 14px; margin: 0; }

    /* FAQ */
    .faq-list { max-width: 840px; margin: 0 auto; }
    .faq-item {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 20px;
      margin-bottom: 14px;
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }
    .faq-item summary {
      list-style: none;
      display: flex;
      align-items: center;
      gap: 16px;
      padding: 20px 24px;
      font-weight: 700;
      cursor: pointer;
      transition: background .2s;
    }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary:hover { background: var(--soft); }
    .faq-item .faq-icon {
      width: 30px;
      height: 30px;
      background: var(--primary-light);
      color: var(--primary-dark);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      margin-left: auto;
      flex-shrink: 0;
      transition: .3s;
    }
    .faq-item[open] .faq-icon { background: var(--primary); color: #fff; transform: rotate(45deg); }
    .faq-answer { padding: 0 24px 22px 60px; color: var(--muted); }

    /* CTA band */
    .cta-band {
      background-image: linear-gradient(135deg, #020617 15%, rgba(2, 6, 23, .82)), url('/assets/images/backpic/back-2.webp');
      background-size: cover;
      background-position: center;
      border-radius: 32px;
      padding: 70px 56px;
      color: #fff;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
    }
    .cta-band h2 { font-size: clamp(28px, 4vw, 44px); font-weight: 900; line-height: 1.2; margin: 0 0 16px; }
    .cta-band p { color: #cbd5e1; font-size: 18px; max-width: 600px; margin: 0 0 28px; }
    .cta-actions { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; }

    /* Footer */
    .site-footer { background: #020617; color: #cbd5e1; padding-top: 68px; margin-top: 80px; }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 48px; padding-bottom: 44px; }
    .footer-brand-name {
      font-size: 24px;
      font-weight: 900;
      color: #fff;
      display: flex;
      flex-direction: column;
      line-height: 1.2;
    }
    .footer-brand-name span { color: var(--primary); font-weight: 600; font-size: 13px; letter-spacing: .08em; }
    .footer-desc { color: #94a3b8; font-size: 14px; max-width: 300px; margin-top: 14px; }
    .site-footer h4 { color: #fff; margin: 0 0 18px; font-size: 16px; font-weight: 800; }
    .footer-links { display: flex; flex-direction: column; gap: 10px; }
    .footer-links a { color: #94a3b8; font-size: 14px; transition: .2s; }
    .footer-links a:hover { color: #fff; transform: translateX(4px); }
    .footer-contact p { display: flex; align-items: flex-start; gap: 10px; color: #94a3b8; font-size: 14px; margin: 8px 0; }
    .footer-contact i { color: var(--primary); width: 18px; margin-top: 4px; }
    .footer-bottom { border-top: 1px solid rgba(255, 255, 255, .08); padding: 22px 0; }
    .footer-bottom .container-main { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; color: #64748b; font-size: 13px; }

    @media (max-width: 1024px) {
      .level-grid { grid-template-columns: repeat(2, 1fr); }
      .features-grid { grid-template-columns: repeat(2, 1fr); }
      .step-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 520px) {
      .container-main { padding-left: 18px; padding-right: 18px; }
      .section-padding { padding: 60px 0; }
      .level-grid, .features-grid, .step-grid, .footer-grid { grid-template-columns: 1fr; }
      .hero-section { padding: 60px 0; }
      .hero-visual img { height: 320px; }
      .split-media img { height: 260px; min-height: 0; }
      .cta-band { padding: 42px 20px; }
      .faq-answer { padding: 0 16px 20px 20px; }
      .footer-bottom .container-main { justify-content: center; text-align: center; }
      .brand { font-size: 18px; }
      .header-inner { gap: 10px; }
    }

/* roulang page: category2 */
/* ===== Reset / Base ===== */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: #f7faff;
  color: #0b1c33;
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
button, input, summary { font-family: inherit; }

:root {
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --blue-light: #dbeafe;
  --cyan: #06b6d4;
  --mint: #10b981;
  --ink: #0b1c33;
  --muted: #5d7393;
  --panel: #eef4fb;
  --line: #dfe9f3;
  --white: #ffffff;
  --deep: #081a30;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 34px;
  --shadow-md: 0 18px 40px -26px rgba(4, 24, 60, 0.35);
  --shadow-lg: 0 30px 70px -34px rgba(4, 24, 60, 0.45);
}

.container-main {
  width: min(1220px, calc(100% - 40px));
  margin-inline: auto;
}

section { scroll-margin-top: 92px; }

/* ===== Buttons ===== */
.btn-main, .btn-ghost, .btn-white, .btn-light {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  line-height: 1;
  padding: 14px 24px;
  border: 0;
  cursor: pointer;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease, color .25s ease;
}

.btn-main {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 60%, #06b6d4 130%);
  color: #fff;
  box-shadow: 0 16px 34px -18px rgba(37, 99, 235, 0.8);
}

.btn-main:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 60%, #0891b2 140%);
  box-shadow: 0 18px 38px -14px rgba(37, 99, 235, 0.45);
}

.btn-ghost {
  background: rgba(37, 99, 235, 0.08);
  color: #1e3f76;
  border: 1px solid rgba(37, 99, 235, 0.16);
}

.btn-ghost:hover {
  background: rgba(37, 99, 235, 0.16);
  border-color: rgba(37, 99, 235, 0.28);
  transform: translateY(-2px);
}

.btn-white {
  background: #ffffff;
  color: #0b1c33;
  box-shadow: 0 18px 36px -20px rgba(0, 0, 0, 0.4);
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 24px 40px -18px rgba(0, 0, 0, 0.3);
}

.btn-light {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.22);
}

.btn-light:hover {
  background: rgba(255, 255, 255, 0.22);
  transform: translateY(-2px);
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.35);
  outline-offset: 3px;
  border-radius: 12px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  min-height: 78px;
}

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

.brand-line:hover .brand-logo { transform: rotate(-6deg) scale(1.04); }

.brand-logo {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, #2563eb, #06b6d4);
  border-radius: 14px;
  font-size: 19px;
  box-shadow: 0 14px 30px -12px rgba(37, 99, 235, 0.55);
  transition: transform .3s ease;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  font-size: 22px;
  font-weight: 800;
  color: #0b1c33;
  letter-spacing: .02em;
}

.brand-text small {
  font-size: 10px;
  font-weight: 700;
  color: #5d7393;
  letter-spacing: 0.36em;
  margin-top: 5px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  background: #eef4fb;
  padding: 6px;
  border-radius: 999px;
  margin-inline: auto;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: #3e5680;
  transition: all .24s ease;
  white-space: nowrap;
}

.nav-link i { color: #8aa0bd; font-size: 12px; }

.nav-link:hover {
  background: rgba(255, 255, 255, 0.9);
  color: #1769e0;
  transform: translateY(-1px);
}

.nav-link.active {
  background: #fff;
  color: #1d4ed8;
  box-shadow: 0 10px 24px -14px rgba(29, 78, 216, 0.5);
}

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

.header-login {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, #2563eb, #06b6d4);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  border-radius: 999px;
  padding: 10px 18px;
  transition: all .24s ease;
  box-shadow: 0 12px 28px -14px rgba(37, 99, 235, 0.6);
}

.header-login:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 34px -14px rgba(37, 99, 235, 0.55);
}

/* ===== Hero ===== */
.category-hero {
  position: relative;
  overflow: hidden;
  padding: 64px 0 70px;
  background:
    radial-gradient(circle at 10% 18%, rgba(219, 234, 254, 0.85), transparent 30%),
    radial-gradient(circle at 90% 10%, rgba(165, 243, 252, 0.4), transparent 28%),
    linear-gradient(180deg, #fbfdff 0%, #f2f7fe 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: 60px;
  align-items: center;
  position: relative;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: #7c91ae;
  margin-bottom: 22px;
}

.breadcrumb a:hover { color: #2563eb; }
.breadcrumb i { font-size: 11px; opacity: .6; }
.breadcrumb span { color: #1f3a6e; font-weight: 600; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid #dbe8f8;
  box-shadow: 0 8px 22px -16px rgba(30, 64, 175, 0.3);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  color: #1d4ed8;
  margin-bottom: 18px;
}

.eyebrow i {
  width: 22px;
  height: 22px;
  display: inline-grid;
  place-items: center;
  background: #dbeafe;
  border-radius: 7px;
  font-size: 11px;
  color: #2563eb;
}

.hero-title {
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.22;
  font-weight: 800;
  color: #081a30;
  margin: 0 0 18px;
  letter-spacing: -0.02em;
}

.hero-title span {
  display: inline-block;
  color: transparent;
  background: linear-gradient(115deg, #1d4ed8 20%, #0284c7 50%, #0891b2 80%);
  -webkit-background-clip: text;
  background-clip: text;
}

.hero-lead {
  font-size: 17px;
  line-height: 1.95;
  color: #4d668a;
  max-width: 560px;
  margin: 0 0 30px;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 30px;
}

.hero-note {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
  color: #6b81a2;
  font-size: 13px;
}

.hero-note i { color: #06b6d4; margin-right: 6px; }

.hero-visual {
  position: relative;
}

.hero-visual-media {
  position: relative;
  min-height: 460px;
  height: 100%;
  border-radius: 38px;
  overflow: hidden;
  background: #d9e3ef;
  box-shadow: 0 36px 80px -42px rgba(3, 23, 58, 0.6);
}

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

.hero-visual-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(4, 15, 34, 0) 32%, rgba(4, 15, 34, 0.2) 64%, rgba(4, 15, 34, 0.7) 100%);
  border-radius: 38px;
  pointer-events: none;
}

.hero-status-card {
  position: absolute;
  left: 22px;
  bottom: 22px;
  right: 22px;
  display: flex;
  align-items: center;
  gap: 13px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(14px);
  border-radius: 18px;
  padding: 13px 16px;
  box-shadow: 0 18px 38px -24px rgba(3, 20, 42, 0.4);
}

.status-icon {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #2563eb, #06b6d4);
  color: #fff;
  font-size: 16px;
}

.hero-status-card strong {
  display: block;
  font-size: 14px;
  color: #0b1c33;
}

.hero-status-card span {
  font-size: 12px;
  color: #5d7393;
  line-height: 1.4;
}

.status-live {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 800;
  color: #087f5b;
  background: #dcfce7;
  border-radius: 999px;
  padding: 5px 10px;
  white-space: nowrap;
}

.status-live::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.16);
}

/* ===== section ===== */
.section { padding: 72px 0; }
.section-tight { padding: 56px 0; }
.section-head { max-width: 740px; margin-bottom: 42px; }
.section-head.center { margin-inline: auto; text-align: center; }

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #2563eb;
  background: #e4edfa;
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 16px;
}

.section-eyebrow i { color: #2563eb; }

.section-title {
  font-size: clamp(27px, 3.4vw, 40px);
  line-height: 1.3;
  font-weight: 800;
  color: #0b1c33;
  letter-spacing: -0.01em;
  margin: 0 0 14px;
}

.section-desc {
  font-size: 16px;
  color: #5d7393;
  margin: 0;
}

/* ===== Feature quick cards ===== */
.quick-features {
  background: #ffffff;
  border-bottom: 1px solid #e9f0f8;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.feature-card {
  background: #f6f9fe;
  border: 1px solid #edf3fb;
  border-radius: 22px;
  padding: 24px;
  transition: all .3s ease;
}

.feature-card:hover {
  background: #fff;
  border-color: #dbe7f6;
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 50px;
  height: 50px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  font-size: 19px;
  margin-bottom: 18px;
  background: linear-gradient(145deg, #dbeafe, #cffafe);
  color: #2563eb;
}

.feature-card:nth-child(2) .feature-icon { background: linear-gradient(145deg, #dcfce7, #d1fae5); color: #0d9488; }
.feature-card:nth-child(3) .feature-icon { background: linear-gradient(145deg, #fef3c7, #ffedd5); color: #d97706; }
.feature-card:nth-child(4) .feature-icon { background: linear-gradient(145deg, #fee2e2, #fce7f3); color: #e11d48; }

.feature-card h3 { font-size: 17px; margin: 0 0 9px; font-weight: 800; color: #0b1c33; }
.feature-card p { font-size: 14px; color: #5d7393; margin: 0; line-height: 1.75; }

/* ===== Sport card ===== */
.sport-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.sport-card {
  border-radius: 26px;
  overflow: hidden;
  background: #fff;
  border: 1px solid #e1ebf5;
  transition: all .35s ease;
  box-shadow: 0 10px 24px -22px rgba(4, 24, 60, 0.2);
}

.sport-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.sport-card-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: #e4eaf3;
}

.sport-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.sport-card:hover .sport-card-media img { transform: scale(1.06); }

.sport-card-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 52%, rgba(8, 24, 46, 0.72) 100%);
  opacity: .8;
}

.sport-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(255, 255, 255, 0.9);
  color: #1e3a75;
  font-size: 12px;
  font-weight: 800;
  padding: 6px 12px;
  border-radius: 999px;
  backdrop-filter: blur(8px);
  box-shadow: 0 8px 18px -10px rgba(10, 22, 43, 0.2);
}

.sport-card-title {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 14px;
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  text-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.sport-card-body { padding: 18px 20px 22px; }
.sport-card-body p { color: #5d7393; font-size: 14px; line-height: 1.8; margin: 0 0 16px; }
.sport-card-foot {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  border-top: 1px solid #edf3fa;
  padding-top: 15px;
}

.chip-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: #f1f6fd;
  border-radius: 999px;
  padding: 6px 11px;
  font-size: 12px;
  color: #3b5b86;
  font-weight: 600;
}

.chip-tag i { color: #06b6d4; font-size: 11px; }

/* ===== Deep section / workflow ===== */
.deep-section {
  position: relative;
  overflow: hidden;
  background: #07182e;
  color: #dcebfa;
  padding: 80px 0;
}

.deep-section .section-title { color: #fff; }
.deep-section .section-desc { color: #a7bdd8; }

.deep-section .section-eyebrow {
  background: rgba(37, 99, 235, 0.2);
  color: #bcd8ff;
  border: 1px solid rgba(148, 197, 255, 0.2);
}

.deep-bg-img {
  position: absolute;
  inset: 0;
  object-fit: cover;
  width: 100%;
  height: 100%;
  opacity: .14;
}

.deep-section .container-main {
  position: relative;
}

.split-grid {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  gap: 54px;
  align-items: center;
}

.step-list {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.step-item {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 18px;
  padding: 16px 17px;
  transition: all .25s ease;
  backdrop-filter: blur(6px);
}

.step-item:hover { background: rgba(255, 255, 255, 0.13); transform: translateX(4px); }
.step-num {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: linear-gradient(135deg, #2563eb, #06b6d4);
  font-weight: 800;
  color: #fff;
  font-size: 14px;
  box-shadow: 0 10px 20px -10px rgba(6, 182, 212, 0.48);
}
.step-item strong { display: block; color: #fff; font-size: 16px; margin-bottom: 3px; }
.step-item p { color: #a9bfdc; font-size: 13px; line-height: 1.7; margin: 0; }

.deep-callout {
  margin-top: 26px;
  display: flex;
  gap: 14px;
  align-items: center;
  border-radius: 18px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.28);
  padding: 14px 18px;
  color: #b7ecd9;
  font-size: 14px;
}

.deep-callout i { font-size: 20px; color: #34d399; }

.split-visual {
  position: relative;
  border-radius: 30px;
  min-height: 420px;
  overflow: hidden;
  box-shadow: 0 40px 70px -45px rgba(0, 0, 0, 0.8);
}

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

.split-visual-card {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 18px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-radius: 20px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 20px 46px -22px rgba(0, 0, 0, 0.45);
}

.split-visual-card div {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: #3b5578;
}

.split-visual-card .mint-dot {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: #dcfce7;
  color: #0d9488;
}

.split-visual-card .blue-dot {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: #dbeafe;
  color: #2563eb;
}

/* ===== Service bento ===== */
.tip-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  gap: 28px;
}

.media-card-list { display: grid; gap: 18px; }
.media-card {
  background: #fff;
  border: 1px solid #e1ebf5;
  border-radius: 20px;
  overflow: hidden;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 16px;
  transition: all .25s ease;
}
.media-card:hover { box-shadow: var(--shadow-md); transform: translateX(5px); }
.media-thumb {
  width: 90px;
  height: 90px;
  border-radius: 16px;
  overflow: hidden;
  flex-shrink: 0;
  background: #d7e2ef;
}
.media-thumb img { width: 100%; height: 100%; object-fit: cover; }
.media-info { flex: 1; min-width: 0; }
.media-info h3 { font-size: 16px; margin: 0 0 6px; color: #0b1c33; font-weight: 800; }
.media-info p { font-size: 13px; color: #647d9c; margin: 0; line-height: 1.7; }
.media-meta { display: flex; gap: 8px; margin-top: 9px; }

.guide-card {
  background: linear-gradient(155deg, #ffffff, #f0f7ff);
  border: 1px solid #dbe7f5;
  border-radius: 24px;
  padding: 26px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 45px -30px rgba(13, 40, 88, 0.25);
}

.guide-card-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}
.guide-icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #2563eb, #06b6d4);
  color: #fff;
  border-radius: 15px;
  font-size: 17px;
}
.guide-card h3 { font-size: 18px; margin: 0; color: #0b1c33; }
.guide-card p { color: #5d7393; font-size: 14px; }

.guide-line {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: #23405f;
  border-top: 1px dashed #d0e0f0;
  padding: 12px 0 0;
  margin-top: auto;
}

.guide-line i { color: #10b981; }

.operator-box {
  margin-top: 22px;
  background: #fff7ed;
  border: 1px solid #fed7aa;
  border-radius: 16px;
  padding: 14px 16px;
  font-size: 13px;
  color: #9a3412;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.operator-box i { margin-top: 5px; color: #f97316; }

/* ===== FAQ ===== */
.faq-section { background: linear-gradient(180deg, #f6faff 0%, #eef5fc 100%); }
.faq-wrap { max-width: 900px; margin-inline: auto; }
.faq-item {
  background: #fff;
  border: 1px solid #e3ecf6;
  border-radius: 18px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: all .25s ease;
}
.faq-item:hover { border-color: #c8dcf4; box-shadow: 0 15px 30px -28px rgba(3, 30, 60, 0.3); }
.faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  padding: 20px 22px;
  color: #142c4c;
  font-weight: 700;
  font-size: 15px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary i {
  color: #2563eb;
  width: 28px;
  height: 28px;
  border-radius: 10px;
  background: #eaf1fb;
  display: inline-grid;
  place-items: center;
  font-size: 13px;
  flex-shrink: 0;
  transition: background .2s ease;
}
.faq-item[open] summary { background: #f8fbff; }
.faq-item[open] summary i { background: #2563eb; color: #fff; }
.faq-answer {
  padding: 0 24px 22px 64px;
  color: #536f92;
  font-size: 14px;
  line-height: 1.9;
}

/* ===== CTA ===== */
.cta-band {
  position: relative;
  overflow: hidden;
  color: #fff;
  padding: 110px 0;
  text-align: center;
  background: radial-gradient(circle at 20% 20%, rgba(6, 182, 212, 0.35), transparent 25%),
    radial-gradient(circle at 80% 50%, rgba(37, 99, 235, 0.5), transparent 32%),
    linear-gradient(135deg, #0f2546, #0a1830);
}

.cta-band img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .18;
}

.cta-inner { position: relative; max-width: 820px; margin-inline: auto; }
.cta-inner h2 { font-size: clamp(30px, 4vw, 46px); font-weight: 800; margin: 0 0 16px; color: #fff; line-height: 1.3; }
.cta-inner p { color: #c5d7ee; font-size: 16px; max-width: 680px; margin: 0 auto 32px; line-height: 1.9; }
.cta-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; margin-bottom: 26px; }
.cta-tips { display: flex; justify-content: center; flex-wrap: wrap; gap: 16px 28px; font-size: 13px; color: #98b0d0; }
.cta-tips i { color: #38bdf8; margin-right: 5px; }

/* ===== Footer ===== */
.site-footer {
  background: #0a1524;
  color: #c7d7e8;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.1fr;
  gap: 40px;
  padding: 70px 0 50px;
}

.footer-brand-name {
  display: inline-flex;
  flex-direction: column;
  color: #ffffff;
  font-size: 23px;
  font-weight: 800;
  margin: 0 0 14px;
  line-height: 1.2;
}

.footer-brand-name span {
  font-size: 10px;
  letter-spacing: .3em;
  color: #84a3c4;
  margin-top: 5px;
}

.footer-desc { color: #9bb2cc; line-height: 1.9; font-size: 14px; }

.site-footer h4 {
  color: #fff;
  font-size: 15px;
  margin: 0 0 18px;
  font-weight: 800;
}

.footer-links {
  display: grid;
  gap: 11px;
}

.footer-links a {
  color: #9bb2cc;
  transition: all .22s ease;
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.footer-links a::before { content: ""; width: 4px; height: 4px; border-radius: 50%; background: #49a6ff; opacity: .35; transition: opacity .22s ease; }
.footer-links a:hover { color: #ffffff; transform: translateX(3px); }
.footer-links a:hover::before { opacity: 1; }

.footer-contact p { margin: 0 0 11px; display: flex; align-items: center; gap: 8px; color: #9bb2cc; font-size: 14px; }
.footer-contact i { color: #5da5ff; width: 16px; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0 23px;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  color: #7891ae;
  font-size: 12px;
}

.footer-bottom span { margin-bottom: 0; }

/* ===== Responsive ===== */
@media (max-width: 1100px) {
  .site-nav { margin-inline: 0; }
  .header-inner { flex-wrap: wrap; padding: 14px 0; }
  .site-nav { order: 3; width: 100%; overflow-x: auto; border-radius: 18px; padding: 6px; scrollbar-width: none; }
  .site-nav::-webkit-scrollbar { display: none; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sport-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual-media { min-height: 360px; }
  .split-grid { grid-template-columns: 1fr; }
  .tip-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 35px; }
  .section { padding: 58px 0; }
}

@media (max-width: 560px) {
  .container-main { width: min(100% - 28px, 1220px); }
  .header-inner { gap: 12px; }
  .brand-logo { width: 38px; height: 38px; font-size: 16px; }
  .brand-text { font-size: 19px; }
  .brand-text small { letter-spacing: .15em; }
  .header-login span { display: none; }
  .header-login { padding: 10px 13px; }
  .header-login i { margin: 0; }

  .category-hero { padding: 38px 0 44px; }
  .hero-grid { gap: 28px; }
  .hero-actions .btn-main, .hero-actions .btn-ghost { width: 100%; }
  .feature-grid { grid-template-columns: 1fr; }
  .sport-grid { grid-template-columns: 1fr; }
  .media-card { flex-direction: column; align-items: flex-start; }
  .media-thumb { width: 100%; height: 150px; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .faq-answer { padding: 0 20px 22px 20px; }
  .step-item { flex-direction: column; }
  .split-visual { min-height: 330px; }
  .cta-band { padding: 70px 0; }
  .cta-actions .btn-white, .cta-actions .btn-light { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}