/* roulang page: index */
:root {
  --bg-primary: #060D18;
  --bg-secondary: #0E1B2E;
  --bg-deep: #04090F;
  --primary: #1E6FFF;
  --accent: #00D4AA;
  --accent-dark: #00A98E;
  --accent-glow: rgba(0, 212, 170, 0.35);
  --text-main: #E8EEFF;
  --text-secondary: #9DB0D5;
  --text-muted: #6B7EA8;
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --radius-card: 16px;
  --radius-btn: 12px;
  --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.25);
  --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.4);
  --font-cn: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-cn);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; transition: color 0.25s ease; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input { font-family: inherit; }

::selection { background: rgba(0, 212, 170, 0.25); color: #fff; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 96px 0; position: relative; }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 212, 170, 0.1);
  border: 1px solid rgba(0, 212, 170, 0.25);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  letter-spacing: 0.4px;
  margin-bottom: 20px;
}

.section-title {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.5px;
  margin-bottom: 14px;
  color: var(--text-main);
}

.section-subtitle {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.7;
}

.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 170, 0.5), transparent);
  border: none;
  margin: 0;
}

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 72px;
  background: rgba(6, 13, 24, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.3px;
  white-space: nowrap;
}

.logo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(0, 212, 170, 0.8);
  flex-shrink: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-main);
  background: transparent;
  border: 1px solid transparent;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.nav-chip:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--accent);
}

.nav-chip.active {
  background: rgba(0, 212, 170, 0.15);
  border-color: rgba(0, 212, 170, 0.35);
  color: var(--accent);
  font-weight: 600;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #06231C;
  font-size: 15px;
  font-weight: 700;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  box-shadow: 0 0 24px var(--accent-glow);
  transition: all 0.3s ease;
  white-space: nowrap;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 32px rgba(0, 212, 170, 0.5);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 0 16px rgba(0, 212, 170, 0.3);
}

.btn-primary:focus-visible,
.nav-chip:focus-visible,
.nav-toggle:focus-visible,
.faq-toggle:focus-visible,
.arrow-link:focus-visible,
.footer-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: transparent;
  color: var(--text-main);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all 0.3s ease;
  white-space: nowrap;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(0, 212, 170, 0.4);
  color: var(--accent);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border);
  align-items: center;
  justify-content: center;
  color: var(--text-main);
  font-size: 20px;
  transition: background 0.25s ease;
}

.nav-toggle:hover { background: rgba(255, 255, 255, 0.1); }

.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  z-index: 99;
  background: rgba(6, 13, 24, 0.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: 24px;
}

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

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mobile-nav-list .nav-chip {
  font-size: 16px;
  padding: 14px 20px;
  border-radius: 12px;
}

.mobile-cta {
  margin-top: 20px;
  width: 100%;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  background:
    radial-gradient(circle at 20% 40%, rgba(0, 212, 170, 0.08), transparent 45%),
    radial-gradient(circle at 85% 60%, rgba(30, 111, 255, 0.08), transparent 40%),
    var(--bg-primary);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 50% 50%, rgba(0, 212, 170, 0.04) 0%, transparent 40%);
  background-size: 64px 64px;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 212, 170, 0.1);
  border: 1px solid rgba(0, 212, 170, 0.3);
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 24px;
}

.hero-title {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -1px;
  margin-bottom: 20px;
  color: var(--text-main);
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--primary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 32px;
}

.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.hero-trust {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  list-style: none;
}

.hero-trust li {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
}

.hero-trust li i {
  color: var(--accent);
  font-size: 14px;
}

.hero-media {
  position: relative;
}

.img-frame {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: linear-gradient(135deg, #0E1B2E, #162A45);
  min-height: 320px;
}

.img-frame::after {
  content: "图片缺失";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 14px;
  z-index: 0;
}

.img-frame img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 16px;
}

.img-frame img[style*="display: none"] + .img-frame::after { content: "图片缺失"; }

.hero-media-glow {
  position: absolute;
  inset: -20px;
  background: radial-gradient(circle at center, rgba(0, 212, 170, 0.12), transparent 70%);
  z-index: 0;
  pointer-events: none;
}

/* ===== Pain Section ===== */
.pain-section { background: var(--bg-secondary); position: relative; overflow: hidden; }

.pain-section::before {
  content: "";
  position: absolute;
  top: 0;
  right: 10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(0, 212, 170, 0.06), transparent 70%);
  pointer-events: none;
}

.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.pain-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 28px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.pain-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 170, 0.4), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.pain-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(0, 212, 170, 0.35);
}

.pain-card:hover::before { opacity: 1; }

.pain-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(0, 212, 170, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--accent);
  margin-bottom: 16px;
}

.pain-card h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 10px;
}

.pain-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ===== Solution Section ===== */
.solution-section { background: var(--bg-primary); }

.solution-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 80px;
}

.solution-block:last-child { margin-bottom: 0; }

.solution-block.reverse { direction: rtl; }
.solution-block.reverse > * { direction: ltr; }

.solution-text { max-width: 480px; }

.solution-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(0, 212, 170, 0.08);
  border: 1px solid rgba(0, 212, 170, 0.3);
  border-radius: 999px;
  padding: 4px 14px;
  margin-bottom: 16px;
}

.solution-text h3 {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.4;
  margin-bottom: 14px;
}

.solution-text p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 20px;
}

.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
  transition: gap 0.3s ease;
}

.arrow-link:hover { gap: 12px; color: var(--accent); }

.arrow-link:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

.solution-media {
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  position: relative;
  background: linear-gradient(135deg, #0E1B2E, #162A45);
  min-height: 300px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.solution-media:hover {
  transform: scale(1.02);
  box-shadow: 0 0 32px rgba(0, 212, 170, 0.15);
}

.solution-media::after {
  content: "图片缺失";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 14px;
  z-index: 0;
}

.solution-media img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-card);
}

/* ===== Stats Section ===== */
.stats-section {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(0, 212, 170, 0.08), transparent 70%);
  pointer-events: none;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  text-align: center;
  position: relative;
}

.stat-item { padding: 20px 0; }

.stat-num {
  font-size: 56px;
  font-weight: 800;
  font-feature-settings: "tnum";
  background: linear-gradient(135deg, var(--accent), var(--primary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  display: inline-block;
  line-height: 1.2;
}

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

/* ===== Testimonials ===== */
.testimonial-section { background: var(--bg-primary); }

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.testimonial-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 28px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.testimonial-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 212, 170, 0.4);
  box-shadow: var(--shadow-hover);
}

.testimonial-quote {
  font-size: 32px;
  color: rgba(0, 212, 170, 0.4);
  line-height: 1;
  font-family: Georgia, serif;
}

.testimonial-text {
  font-size: 15px;
  color: #D5E0F5;
  line-height: 1.7;
  flex: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(0, 212, 170, 0.3), rgba(30, 111, 255, 0.3));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
}

.author-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
}

.author-role {
  font-size: 12px;
  color: var(--text-muted);
}

/* ===== News CMS ===== */
.news-section {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.news-section::before {
  content: "";
  position: absolute;
  top: 20%;
  left: -10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(30, 111, 255, 0.06), transparent 70%);
  pointer-events: none;
}

.news-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.cms-list { display: flex; flex-direction: column; gap: 16px; }

.news-card {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 22px 28px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.news-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.news-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(0, 212, 170, 0.3);
  transform: translateX(4px);
}

.news-card:hover::before { opacity: 1; }

.news-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.news-cat {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  border: 1px solid rgba(0, 212, 170, 0.35);
  border-radius: 8px;
  padding: 2px 10px;
  width: fit-content;
  background: rgba(0, 212, 170, 0.05);
}

.news-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
  transition: color 0.25s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.news-card:hover .news-title { color: var(--accent); }

.news-summary {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.news-arrow {
  font-size: 16px;
  color: var(--text-muted);
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.news-card:hover .news-arrow {
  color: var(--accent);
  transform: translateX(4px);
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 60px 20px;
  background: var(--glass-bg);
  border: 1px dashed var(--glass-border);
  border-radius: var(--radius-card);
  color: var(--text-muted);
  font-size: 14px;
}

.empty-state i {
  font-size: 40px;
  color: var(--text-muted);
  opacity: 0.6;
}

/* ===== FAQ ===== */
.faq-section { background: var(--bg-primary); }

.faq-list {
  max-width: 760px;
  margin: 40px auto 0;
}

.faq-item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

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

.faq-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-main);
  text-align: left;
  transition: color 0.25s ease;
}

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

.faq-icon {
  font-size: 14px;
  color: var(--accent);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item.open .faq-icon { transform: rotate(180deg); }

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

.faq-answer-inner {
  padding: 0 0 20px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  padding: 100px 0;
  background:
    radial-gradient(circle at center, rgba(0, 212, 170, 0.12), transparent 60%),
    var(--bg-primary);
  overflow: hidden;
  text-align: center;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 50% 50%, rgba(0, 212, 170, 0.05) 0%, transparent 40%);
  background-size: 60px 60px;
  pointer-events: none;
}

.cta-inner {
  position: relative;
  z-index: 2;
  max-width: 680px;
  margin: 0 auto;
}

.cta-title {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-main);
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}

.cta-subtitle {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid linear-gradient(90deg, transparent, rgba(0, 212, 170, 0.5), transparent);
  padding: 60px 0 0;
  position: relative;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 170, 0.5), transparent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-logo { font-size: 18px; font-weight: 800; color: var(--text-main); display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }

.footer-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 320px;
}

.footer-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color 0.25s ease;
}

.footer-link:hover { color: var(--accent); }

.footer-info { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-info li { font-size: 14px; color: var(--text-secondary); display: flex; gap: 10px; align-items: center; }
.footer-info li i { color: var(--accent); font-size: 13px; width: 16px; text-align: center; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

.footer-bottom a { color: var(--text-secondary); }
.footer-bottom a:hover { color: var(--accent); }

/* ===== Fish scale decoration ===== */
.scale-pattern {
  background-image:
    radial-gradient(circle at 50% 50%, rgba(0, 212, 170, 0.05) 0%, transparent 40%);
  background-size: 48px 48px;
}

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .hero { min-height: auto; padding: 110px 0 60px; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-content { max-width: 100%; }
  .hero-title { font-size: 38px; }
  .hero-media { max-width: 480px; }
  .pain-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonial-grid { grid-template-columns: repeat(2, 1fr); }
  .solution-block { grid-template-columns: 1fr; gap: 32px; }
  .solution-block.reverse { direction: ltr; }
  .solution-text { max-width: 100%; }
  .stats-grid { grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .stat-num { font-size: 44px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .nav-list { display: none; }
  .nav-toggle { display: flex; }
  .header-cta { display: none; }
  .section { padding: 72px 0; }
  .section-title { font-size: 28px; }
}

@media (max-width: 767px) {
  .container { padding: 0 16px; }
  .site-header { height: 64px; }
  .mobile-menu { top: 64px; }
  .hero { padding: 100px 0 48px; }
  .hero-title { font-size: 30px; }
  .hero-subtitle { font-size: 15px; }
  .hero-btns { flex-direction: column; }
  .btn-primary, .btn-ghost { width: 100%; }
  .hero-trust { flex-direction: column; gap: 12px; }
  .pain-grid { grid-template-columns: 1fr; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; gap: 32px; }
  .stat-num { font-size: 40px; }
  .section { padding: 56px 0; }
  .section-title { font-size: 24px; }
  .cta-title { font-size: 26px; }
  .footer-grid { grid-template-columns: 1fr; }
  .news-card { flex-direction: column; align-items: flex-start; gap: 10px; padding: 20px; }
  .news-meta { width: 100%; justify-content: space-between; }
  .news-title { white-space: normal; }
  .logo { font-size: 18px; }
  .solution-media { min-height: 220px; }
  .img-frame { min-height: 240px; }
}

@media (max-width: 520px) {
  .container { padding: 0 12px; }
  .hero-title { font-size: 26px; }
  .section-title { font-size: 22px; }
  .cta-title { font-size: 22px; }
  .btn-primary, .btn-ghost { padding: 11px 20px; font-size: 14px; }
}

/* roulang page: article */
:root {
  --bg-primary: #060D18;
  --bg-secondary: #0E1B2E;
  --bg-footer: #04090F;
  --accent-blue: #1E6FFF;
  --accent-cyan: #00D4AA;
  --accent-cyan-dark: #00A98E;
  --text-primary: #E8EEFF;
  --text-secondary: #9DB0D5;
  --text-muted: #6B7EA8;
  --border-glass: rgba(255, 255, 255, 0.1);
  --card-bg: rgba(255, 255, 255, 0.05);
  --radius-card: 16px;
  --radius-btn: 12px;
  --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.25);
  --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.4);
  --glow-cyan: 0 0 24px rgba(0, 212, 170, 0.35);
  --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(circle at 15% 25%, rgba(0, 212, 170, 0.07), transparent 40%),
    radial-gradient(circle at 85% 75%, rgba(30, 111, 255, 0.05), transparent 45%);
  background-attachment: fixed;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 焦点可见性 */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 2px;
  border-radius: 8px;
}

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 13, 24, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  height: 72px;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.logo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 12px rgba(0, 212, 170, 0.7);
  flex-shrink: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  border: 1px solid transparent;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.nav-chip:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}

.nav-chip.active {
  background: rgba(0, 212, 170, 0.15);
  color: var(--accent-cyan);
  border-color: rgba(0, 212, 170, 0.4);
}

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

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  font-size: 18px;
  transition: background 0.25s;
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.06);
}

/* 按钮 */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  background: linear-gradient(135deg, #00D4AA, #00A98E);
  color: #04121c;
  font-size: 15px;
  font-weight: 700;
  border: none;
  transition: all 0.3s ease;
  box-shadow: var(--glow-cyan);
  white-space: nowrap;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 32px rgba(0, 212, 170, 0.5);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 0 16px rgba(0, 212, 170, 0.3);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: transparent;
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 500;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(0, 212, 170, 0.4);
  color: var(--accent-cyan);
}

/* ===== 文章横幅 / 面包屑 ===== */
.article-banner {
  padding: 48px 0 32px;
  position: relative;
  background:
    linear-gradient(180deg, rgba(14, 27, 46, 0.9), rgba(6, 13, 24, 0.6)),
    radial-gradient(circle, rgba(0, 212, 170, 0.1) 1.5px, transparent 2.5px);
  background-size: auto, 22px 22px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-secondary);
  transition: color 0.25s;
}

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

.breadcrumb .sep {
  color: rgba(255, 255, 255, 0.2);
}

.breadcrumb .current {
  color: var(--text-muted);
  max-width: 360px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.banner-meta {
  margin-top: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.category-chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  border-radius: 999px;
  border: 1px solid rgba(0, 212, 170, 0.4);
  background: rgba(0, 212, 170, 0.1);
  color: var(--accent-cyan);
  font-size: 13px;
  font-weight: 600;
}

.brand-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
}

.brand-tag i {
  color: var(--accent-cyan);
  font-size: 11px;
}

/* ===== 文章主体 ===== */
.article-main {
  padding: 48px 0 60px;
}

.article-header {
  max-width: 760px;
  margin: 0 auto 40px;
  text-align: left;
}

.article-header h1 {
  font-size: 42px;
  line-height: 1.3;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.01em;
  margin-bottom: 24px;
}

.meta-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}

.meta-item i {
  color: var(--accent-cyan);
  font-size: 14px;
}

.meta-item .category-tag {
  color: var(--accent-cyan);
}

.article-body {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px;
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-primary);
}

.article-body p {
  margin-bottom: 28px;
  color: rgba(232, 238, 255, 0.9);
}

.article-body h2 {
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  margin: 40px 0 16px;
  line-height: 1.35;
}

.article-body h3 {
  font-size: 22px;
  font-weight: 600;
  color: #fff;
  margin: 32px 0 12px;
  line-height: 1.4;
}

.article-body h4 {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  margin: 24px 0 10px;
}

.article-body blockquote {
  border-left: 3px solid var(--accent-cyan);
  padding: 16px 24px;
  margin: 32px 0;
  background: rgba(0, 212, 170, 0.06);
  border-radius: 0 12px 12px 0;
  color: var(--text-secondary);
  font-size: 15px;
}

.article-body ul,
.article-body ol {
  margin-bottom: 28px;
  padding-left: 24px;
  color: rgba(232, 238, 255, 0.85);
}

.article-body ul li,
.article-body ol li {
  margin-bottom: 8px;
}

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

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

.article-body a {
  color: var(--accent-cyan);
  border-bottom: 1px solid rgba(0, 212, 170, 0.3);
  transition: all 0.25s;
}

.article-body a:hover {
  color: #fff;
  border-bottom-color: #fff;
}

.article-body strong {
  color: #fff;
  font-weight: 700;
}

.article-body img {
  border-radius: 12px;
  margin: 32px 0;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: 14px;
}

.article-body th,
.article-body td {
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 12px 16px;
  text-align: left;
}

.article-body th {
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
  font-weight: 600;
}

/* 内容未找到 */
.not-found {
  text-align: center;
  padding: 60px 20px;
}

.not-found i {
  font-size: 56px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.not-found p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

/* ===== 文章分页 ===== */
.article-pagination {
  max-width: 760px;
  margin: 32px auto 0;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.page-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  border-radius: var(--radius-btn);
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-secondary);
  font-size: 14px;
  transition: all 0.3s ease;
}

.page-btn:hover {
  border-color: rgba(0, 212, 170, 0.4);
  color: var(--accent-cyan);
  background: rgba(0, 212, 170, 0.06);
  transform: translateY(-2px);
}

.page-btn i {
  font-size: 14px;
}

/* ===== 相关推荐 ===== */
.related-section {
  padding: 80px 0;
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.related-section::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(0, 212, 170, 0.08), transparent 70%);
  pointer-events: none;
}

.related-section .container {
  position: relative;
}

.related-section h2 {
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  text-align: center;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 15px;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 48px;
}

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

.related-card {
  display: block;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: all 0.3s ease;
}

.related-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 212, 170, 0.4);
  box-shadow: var(--shadow-hover);
  background: rgba(255, 255, 255, 0.06);
}

.related-cover {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #0E1B2E, #162A45);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

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

.related-card:hover .related-cover img {
  transform: scale(1.03);
}

.related-info {
  padding: 20px;
}

.related-info h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.25s;
}

.related-card:hover .related-info h3 {
  color: var(--accent-cyan);
}

.related-date {
  font-size: 12px;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ===== 返回入口 ===== */
.back-entry {
  padding: 32px 0 8px;
  max-width: 760px;
  margin: 0 auto;
}

.back-entry a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  transition: color 0.25s, transform 0.25s;
}

.back-entry a:hover {
  color: var(--accent-cyan);
}

.back-entry a i {
  font-size: 13px;
  transition: transform 0.25s;
}

.back-entry a:hover i {
  transform: translateX(-4px);
}

/* ===== CTA区 ===== */
.cta-section {
  padding: 100px 0;
  text-align: center;
  position: relative;
  background:
    radial-gradient(circle at 50% 50%, rgba(0, 212, 170, 0.08), transparent 60%),
    radial-gradient(circle, rgba(0, 212, 170, 0.1) 1.5px, transparent 2.5px);
  background-size: auto, 22px 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.cta-section h2 {
  font-size: 36px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--bg-footer);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 64px 0 24px;
}

.footer-top-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 170, 0.5), transparent);
  margin-bottom: 48px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.footer-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 300px;
}

.footer-title {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color 0.25s;
}

.footer-link:hover {
  color: var(--accent-cyan);
}

.footer-info {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-info li {
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-info li i {
  color: var(--accent-cyan);
  font-size: 13px;
  width: 16px;
  text-align: center;
}

.footer-bottom {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--text-secondary);
  transition: color 0.25s;
}

.footer-bottom a:hover {
  color: var(--accent-cyan);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

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

@media (max-width: 768px) {
  .site-header,
  .header-inner {
    height: 64px;
  }

  .header-inner {
    padding: 0 16px;
  }

  .nav-list {
    display: flex;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(6, 13, 24, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 20px 24px 32px;
    gap: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.35s ease, opacity 0.3s ease, visibility 0.3s;
    z-index: 99;
  }

  .nav-list.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-chip {
    width: 100%;
    justify-content: center;
    padding: 14px 18px;
  }

  .nav-toggle {
    display: flex;
  }

  .header-cta {
    display: none;
  }

  .article-banner {
    padding: 32px 0 24px;
  }

  .article-main {
    padding: 32px 0 40px;
  }

  .article-header h1 {
    font-size: 30px;
  }

  .article-body {
    padding: 28px 24px;
    font-size: 15px;
  }

  .article-body h2 {
    font-size: 24px;
  }

  .article-body h3 {
    font-size: 20px;
  }

  .related-section {
    padding: 60px 0;
  }

  .related-section h2 {
    font-size: 26px;
  }

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

  .cta-section {
    padding: 60px 0;
  }

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

  .article-pagination {
    flex-direction: column;
    gap: 12px;
  }

  .page-btn {
    justify-content: center;
  }

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

  .footer-bottom {
    margin-top: 32px;
  }

  .container {
    padding: 0 16px;
  }

  .meta-row {
    gap: 12px;
  }
}

@media (max-width: 520px) {
  .article-header h1 {
    font-size: 26px;
  }

  .breadcrumb {
    font-size: 12px;
    gap: 4px;
  }

  .breadcrumb .current {
    max-width: 160px;
  }

  .article-body {
    padding: 24px 18px;
  }

  .btn-primary,
  .btn-ghost {
    width: 100%;
  }
}

/* roulang page: category1 */
:root {
  --bg-primary: #060D18;
  --bg-secondary: #0E1B2E;
  --bg-footer: #04090F;
  --primary: #1E6FFF;
  --accent: #00D4AA;
  --accent-dark: #00A98E;
  --text-primary: #E8EEFF;
  --text-secondary: #9DB0D5;
  --text-muted: #6B7EA8;
  --border-glass: rgba(255,255,255,0.1);
  --glass-bg: rgba(255,255,255,0.05);
  --radius-card: 16px;
  --radius-btn: 12px;
  --shadow-card: 0 8px 24px rgba(0,0,0,0.25);
  --shadow-hover: 0 12px 32px rgba(0,0,0,0.4);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: all 0.3s ease; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; background: none; border: none; color: inherit; }
input, textarea { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }
.section { padding: 100px 0; }
.section-alt { background: var(--bg-secondary); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 60px; }
.over-label { display: inline-block; color: var(--accent); font-size: 14px; font-weight: 600; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 10px; }
.section-head h2 { font-size: 34px; line-height: 1.3; font-weight: 700; margin-bottom: 14px; }
.section-head p { color: var(--text-secondary); font-size: 15px; }

.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #04121A; font-weight: 700; font-size: 15px; padding: 14px 28px;
  border-radius: var(--radius-btn); box-shadow: 0 0 24px rgba(0,212,170,0.35);
  transition: all 0.3s ease; border: none;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(0,212,170,0.45); }
.btn-ghost {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: rgba(255,255,255,0.04); color: var(--text-primary); font-size: 15px; font-weight: 600;
  padding: 14px 28px; border-radius: var(--radius-btn);
  border: 1px solid rgba(255,255,255,0.2); transition: all 0.3s ease;
}
.btn-ghost:hover { background: rgba(255,255,255,0.08); border-color: rgba(0,212,170,0.4); }
.btn-xl { padding: 16px 40px; font-size: 16px; }
.btn-sm { padding: 10px 20px; font-size: 14px; }

.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(6,13,24,0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.header-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.logo { display: inline-flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: #fff; white-space: nowrap; }
.logo-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px rgba(0,212,170,0.8); flex-shrink: 0; }
.nav-list { display: flex; align-items: center; gap: 8px; }
.nav-chip {
  display: inline-block; padding: 8px 18px; border-radius: 999px;
  font-size: 14px; font-weight: 500; color: var(--text-primary);
  background: transparent; border: 1px solid transparent; transition: all 0.3s ease;
}
.nav-chip:hover { background: rgba(255,255,255,0.06); }
.nav-chip.active { background: rgba(0,212,170,0.15); color: var(--accent); border-color: rgba(0,212,170,0.4); }
.header-cta { padding: 10px 20px; font-size: 14px; flex-shrink: 0; }
.nav-toggle { display: none; width: 40px; height: 40px; border-radius: 10px; border: 1px solid rgba(255,255,255,0.1); color: var(--text-primary); font-size: 18px; align-items: center; justify-content: center; }

.hero { position: relative; padding: 160px 0 100px; overflow: hidden; min-height: 640px; display: flex; align-items: center; }
.hero-bg { position: absolute; inset: 0; z-index: 0; background-size: cover; background-position: center; opacity: 0.4; }
.hero-overlay { position: absolute; inset: 0; z-index: 1; background: linear-gradient(180deg, rgba(6,13,24,0.75) 0%, rgba(6,13,24,0.92) 100%); }
.hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(0,212,170,0.12); border: 1px solid rgba(0,212,170,0.3);
  color: var(--accent); font-size: 13px; font-weight: 600;
  padding: 6px 16px; border-radius: 999px; margin-bottom: 20px;
}
.hero h1 { font-size: 48px; line-height: 1.2; font-weight: 800; margin-bottom: 18px; }
.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--primary));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.hero-desc { color: var(--text-secondary); font-size: 16px; max-width: 480px; margin-bottom: 28px; }
.hero-actions { display: flex; align-items: center; gap: 16px; margin-bottom: 30px; flex-wrap: wrap; }
.hero-points { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.hero-points li { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-secondary); }
.hero-points i { color: var(--accent); font-size: 15px; }
.hero-visual { position: relative; }
.hero-card {
  position: relative; border-radius: var(--radius-card); overflow: hidden;
  border: 1px solid rgba(255,255,255,0.14); box-shadow: 0 20px 60px rgba(0,0,0,0.45);
  background: linear-gradient(135deg, #0E1B2E, #162A45);
}
.hero-img { width: 100%; height: 360px; object-fit: cover; }
.hero-card-tag {
  position: absolute; bottom: 16px; left: 16px;
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(6,13,24,0.7); backdrop-filter: blur(8px);
  border: 1px solid rgba(0,212,170,0.3); color: var(--accent);
  font-size: 13px; font-weight: 600; padding: 8px 16px; border-radius: 999px;
}

.feature-card {
  position: relative; background: var(--glass-bg); border: 1px solid var(--border-glass);
  border-radius: var(--radius-card); padding: 28px 24px;
  backdrop-filter: blur(12px); transition: all 0.3s ease; overflow: hidden;
}
.feature-card::before {
  content: ''; position: absolute; top: -40px; right: -40px; width: 100px; height: 100px;
  border-radius: 50%; background: radial-gradient(circle, rgba(0,212,170,0.15), transparent 70%);
  opacity: 0; transition: opacity 0.3s ease;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: rgba(0,212,170,0.4); }
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 48px; height: 48px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,212,170,0.12); color: var(--accent); font-size: 20px;
  margin-bottom: 18px;
}
.feature-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }

.split-block { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; margin-bottom: 80px; }
.split-block:last-child { margin-bottom: 0; }
.split-block.reverse { direction: rtl; }
.split-block.reverse > * { direction: ltr; }
.media-box { position: relative; border-radius: var(--radius-card); overflow: hidden; border: 1px solid var(--border-glass); background: linear-gradient(135deg, #0E1B2E, #162A45); box-shadow: var(--shadow-card); transition: transform 0.3s ease, box-shadow 0.3s ease; }
.media-box:hover { transform: scale(1.02); box-shadow: 0 16px 40px rgba(0,0,0,0.45); }
.media-box img { width: 100%; height: 320px; object-fit: cover; }
.media-box.img-missing::after {
  content: '图片缺失'; position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.25); font-size: 14px; letter-spacing: 2px;
}
.chip-label {
  display: inline-block; background: rgba(0,212,170,0.12);
  border: 1px solid rgba(0,212,170,0.35); color: var(--accent);
  font-size: 12px; font-weight: 600; padding: 5px 14px; border-radius: 999px;
  margin-bottom: 14px;
}
.split-body h3 { font-size: 24px; font-weight: 700; margin-bottom: 14px; line-height: 1.35; }
.split-body p { color: var(--text-secondary); font-size: 15px; line-height: 1.7; margin-bottom: 18px; }
.text-link { display: inline-flex; align-items: center; gap: 6px; color: var(--accent); font-size: 14px; font-weight: 600; }
.text-link i { transition: transform 0.3s ease; }
.text-link:hover i { transform: translateX(4px); }

.process-card {
  background: var(--glass-bg); border: 1px solid var(--border-glass);
  border-radius: var(--radius-card); padding: 32px 28px; text-align: left;
  transition: all 0.3s ease; position: relative;
}
.process-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: rgba(0,212,170,0.3); }
.step-num {
  font-size: 44px; font-weight: 800; line-height: 1;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
  margin-bottom: 16px; font-feature-settings: 'tnum';
}
.process-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.process-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }

.update-section { padding: 60px 0; }
.update-card {
  display: flex; align-items: center; gap: 20px;
  background: var(--glass-bg); border: 1px solid rgba(0,212,170,0.2);
  border-radius: var(--radius-card); padding: 24px 28px;
  backdrop-filter: blur(12px);
}
.update-icon {
  width: 52px; height: 52px; flex-shrink: 0; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,212,170,0.14); color: var(--accent); font-size: 22px;
}
.update-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 4px; }
.update-card p { font-size: 14px; color: var(--text-secondary); }
.update-card .btn-primary { margin-left: auto; flex-shrink: 0; }

.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid rgba(255,255,255,0.08); background: transparent; transition: background 0.3s ease; }
.faq-item:first-child { border-top: 1px solid rgba(255,255,255,0.08); }
.faq-q {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  padding: 22px 8px; text-align: left; font-size: 15px; font-weight: 600; color: var(--text-primary);
  transition: color 0.3s ease;
}
.faq-q:hover { color: var(--accent); }
.faq-q i { color: var(--accent); font-size: 14px; transition: transform 0.3s ease; }
.faq-item.open .faq-q i { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-a p { padding: 0 8px 22px; font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

.cta-section { position: relative; padding: 100px 0; overflow: hidden; text-align: center; }
.cta-bg { position: absolute; inset: 0; z-index: 0; background: radial-gradient(circle at center, rgba(0,212,170,0.14), transparent 60%); }
.cta-inner { position: relative; z-index: 1; max-width: 640px; }
.cta-inner h2 { font-size: 36px; font-weight: 800; margin-bottom: 14px; }
.cta-inner p { color: var(--text-secondary); font-size: 15px; margin-bottom: 30px; }

.site-footer { background: #04090F; border-top: 1px solid transparent; position: relative; }
.site-footer::before { content: ''; display: block; height: 1px; background: linear-gradient(90deg, transparent, rgba(0,212,170,0.5), transparent); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding: 60px 0 40px; }
.footer-logo { display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 800; color: #fff; margin-bottom: 14px; }
.footer-desc { font-size: 14px; color: var(--text-muted); line-height: 1.7; max-width: 300px; }
.footer-title { font-size: 14px; font-weight: 700; color: var(--text-primary); margin-bottom: 16px; }
.footer-links li, .footer-info li { margin-bottom: 10px; }
.footer-link, .footer-info li { font-size: 14px; color: var(--text-secondary); display: inline-flex; align-items: center; gap: 8px; }
.footer-link:hover { color: var(--accent); }
.footer-info i { color: var(--accent); font-size: 13px; width: 18px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding: 20px 0; text-align: center; }
.footer-bottom p { font-size: 13px; color: var(--text-muted); }
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent); }

a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

@media (max-width: 1023px) {
  .nav-list {
    position: fixed; top: 72px; left: 0; right: 0; z-index: 99;
    flex-direction: column; align-items: stretch; gap: 8px;
    background: rgba(6,13,24,0.95); backdrop-filter: blur(16px);
    padding: 20px 24px 30px; border-bottom: 1px solid rgba(255,255,255,0.08);
    display: none;
  }
  .nav-list.open { display: flex; }
  .nav-chip { width: 100%; text-align: center; padding: 12px; }
  .nav-toggle { display: inline-flex; }
  .header-cta { display: none; }
  .hero { padding: 120px 0 60px; min-height: auto; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 36px; }
  .hero-img { height: 280px; }
  .split-block { gap: 32px; }
  .section { padding: 70px 0; }
  .section-head { margin-bottom: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 767px) {
  .hero h1 { font-size: 30px; }
  .hero-img { height: 220px; }
  .section { padding: 60px 0; }
  .section-head h2 { font-size: 24px; }
  .split-block { grid-template-columns: 1fr; gap: 24px; margin-bottom: 60px; }
  .split-block.reverse { direction: ltr; }
  .media-box img { height: 220px; }
  .cta-inner h2 { font-size: 26px; }
  .update-card { flex-direction: column; align-items: flex-start; }
  .update-card .btn-primary { margin-left: 0; }
  .hero-points { gap: 12px; flex-direction: column; align-items: flex-start; }
  .process-card { padding: 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .header-inner { height: 64px; }
  .nav-list { top: 64px; }
  .hero { padding: 100px 0 50px; }
}

/* roulang page: category2 */
:root {
    --bg-primary: #060D18;
    --bg-secondary: #0E1B2E;
    --bg-deep: #04090F;
    --primary: #1E6FFF;
    --accent: #00D4AA;
    --text-main: #E8EEFF;
    --text-secondary: #9DB0D5;
    --text-muted: #6B7EA8;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-full: 999px;
    --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.25);
    --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.4);
    --shadow-accent: 0 0 24px rgba(0, 212, 170, 0.35);
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    background-color: var(--bg-primary);
    color: var(--text-main);
    font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
  }

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

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

  button {
    font-family: inherit;
    border: none;
    background: none;
    cursor: pointer;
  }

  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
  }

  /* ===== Header ===== */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: 72px;
    background: rgba(6, 13, 24, 0.82);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

  .header-inner {
    max-width: 1200px;
    height: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
  }

  .logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.5px;
    white-space: nowrap;
  }

  .logo-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 12px var(--accent);
  }

  .nav-list {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
  }

  .nav-chip {
    display: inline-flex;
    align-items: center;
    padding: 8px 18px;
    border-radius: 999px;
    font-size: 14px;
    color: var(--text-main);
    border: 1px solid transparent;
    transition: background 0.25s, color 0.25s, border-color 0.25s;
  }

  .nav-chip:hover {
    background: rgba(255, 255, 255, 0.06);
  }

  .nav-chip.active {
    background: rgba(0, 212, 170, 0.15);
    color: var(--accent);
    border-color: rgba(0, 212, 170, 0.35);
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 24px;
    border-radius: 12px;
    background: linear-gradient(135deg, #00D4AA, #00A98E);
    color: #04121A;
    font-weight: 700;
    font-size: 14px;
    box-shadow: 0 0 24px rgba(0, 212, 170, 0.35);
    transition: transform 0.25s, box-shadow 0.25s;
    white-space: nowrap;
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 32px rgba(0, 212, 170, 0.5);
  }

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

  .nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    color: var(--text-main);
    font-size: 20px;
    border: 1px solid var(--glass-border);
  }

  .nav-toggle.active {
    color: var(--accent);
    border-color: rgba(0, 212, 170, 0.4);
  }

  .nav-toggle:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }

  /* ===== Hero ===== */
  .hero-page {
    position: relative;
    min-height: 560px;
    display: flex;
    align-items: center;
    padding: 130px 0 80px;
    background: linear-gradient(rgba(6, 13, 24, 0.85), rgba(6, 13, 24, 0.94)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    overflow: hidden;
  }

  .hero-page::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
      radial-gradient(circle at 20% 30%, rgba(0, 212, 170, 0.12), transparent 50%),
      radial-gradient(circle at 80% 70%, rgba(30, 111, 255, 0.12), transparent 40%);
    pointer-events: none;
  }

  .hero-page::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 24px 24px;
    pointer-events: none;
  }

  .hero-content {
    position: relative;
    z-index: 2;
    max-width: 720px;
  }

  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border-radius: 999px;
    border: 1px solid rgba(0, 212, 170, 0.4);
    background: rgba(0, 212, 170, 0.08);
    color: var(--accent);
    font-size: 13px;
    margin-bottom: 24px;
  }

  .hero-title {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 20px;
  }

  .hero-title .gradient-text {
    background: linear-gradient(135deg, #00D4AA, #1E6FFF);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
  }

  .hero-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 32px;
    max-width: 600px;
  }

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

  .btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-main);
    font-size: 14px;
    font-weight: 600;
    transition: background 0.25s, border-color 0.25s, transform 0.25s;
  }

  .btn-outline:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(0, 212, 170, 0.4);
  }

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

  /* ===== 页面区块 ===== */
  .page-section {
    padding: 100px 0;
  }

  .section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 60px;
  }

  .section-tag {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 999px;
    border: 1px solid rgba(0, 212, 170, 0.4);
    color: var(--accent);
    font-size: 13px;
    margin-bottom: 16px;
  }

  .section-title {
    font-size: 34px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 16px;
  }

  .section-subtitle {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
  }

  /* ===== 面包屑 ===== */
  .breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 48px;
  }

  .breadcrumb a {
    color: var(--text-secondary);
    transition: color 0.25s;
  }

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

  .breadcrumb .current {
    color: var(--text-muted);
  }

  .breadcrumb i {
    font-size: 10px;
  }

  /* ===== 左侧目录 + 右侧内容 ===== */
  .layout-split {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .side-nav {
    position: sticky;
    top: 96px;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 28px;
    box-shadow: var(--shadow-card);
  }

  .side-nav-title {
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
    padding-bottom: 14px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .side-nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 6px;
  }

  .side-nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 14px;
    color: var(--text-secondary);
    transition: background 0.25s, color 0.25s, border-color 0.25s;
    border: 1px solid transparent;
  }

  .side-nav-link:hover {
    background: rgba(0, 212, 170, 0.08);
    color: var(--accent);
  }

  .side-nav-link.active {
    background: rgba(0, 212, 170, 0.12);
    color: var(--accent);
    border-color: rgba(0, 212, 170, 0.3);
  }

  .side-nav-link i {
    font-size: 14px;
    width: 18px;
    text-align: center;
  }

  .content-main {
    min-width: 0;
  }

  /* ===== 图文卡片 ===== */
  .info-card {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: center;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 28px;
    margin-bottom: 32px;
    box-shadow: var(--shadow-card);
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
  }

  .info-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(0, 212, 170, 0.4);
  }

  .info-card.flip {
    direction: rtl;
  }

  .info-card.flip > * {
    direction: ltr;
  }

  .info-card-media {
    border-radius: 12px;
    overflow: hidden;
    background: linear-gradient(135deg, #0E1B2E, #162A45);
    min-height: 240px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 14px;
  }

  .info-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s;
  }

  .info-card:hover .info-card-media img {
    transform: scale(1.03);
  }

  .info-card-body {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .chip-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 14px;
    border-radius: 999px;
    border: 1px solid rgba(0, 212, 170, 0.35);
    color: var(--accent);
    font-size: 12px;
    background: rgba(0, 212, 170, 0.06);
    width: fit-content;
  }

  .info-card-title {
    font-size: 22px;
    font-weight: 700;
    line-height: 1.4;
  }

  .info-card-body p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
  }

  .info-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 4px;
  }

  .info-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
  }

  .info-list li i {
    color: var(--accent);
    font-size: 12px;
    margin-top: 5px;
  }

  /* ===== 场景卡片 ===== */
  .scenario-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .scenario-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 28px;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
    position: relative;
    overflow: hidden;
  }

  .scenario-card::before {
    content: "";
    position: absolute;
    top: -30px;
    right: -30px;
    width: 80px;
    height: 80px;
    background: radial-gradient(circle, rgba(0, 212, 170, 0.2), transparent 70%);
    opacity: 0;
    transition: opacity 0.3s;
  }

  .scenario-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(0, 212, 170, 0.4);
  }

  .scenario-card:hover::before {
    opacity: 1;
  }

  .scenario-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(0, 212, 170, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 18px;
    margin-bottom: 18px;
  }

  .scenario-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
  }

  .scenario-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
  }

  /* ===== 步骤区 ===== */
  .steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }

  .step-item {
    position: relative;
    text-align: center;
    padding: 32px 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
  }

  .step-item:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 212, 170, 0.4);
    box-shadow: var(--shadow-hover);
  }

  .step-num {
    width: 44px;
    height: 44px;
    margin: 0 auto 16px;
    border-radius: 50%;
    background: linear-gradient(135deg, #00D4AA, #1E6FFF);
    color: #04121A;
    font-weight: 800;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 20px rgba(0, 212, 170, 0.3);
  }

  .step-item h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
  }

  .step-item p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
  }

  /* ===== 速览卡片 ===== */
  .quick-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .quick-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 28px;
    transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
  }

  .quick-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 212, 170, 0.4);
    box-shadow: var(--shadow-hover);
  }

  .quick-card .quick-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(0, 212, 170, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 16px;
    margin-bottom: 16px;
  }

  .quick-card h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
  }

  .quick-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
  }

  /* ===== FAQ ===== */
  .faq-wrap {
    max-width: 780px;
    margin: 0 auto;
  }

  .faq-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 22px 8px;
    font-size: 15px;
    color: var(--text-main);
    text-align: left;
    transition: color 0.25s;
  }

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

  .faq-question:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }

  .faq-icon {
    color: var(--accent);
    font-size: 14px;
    transition: transform 0.3s;
    flex-shrink: 0;
  }

  .faq-item.active .faq-icon {
    transform: rotate(180deg);
  }

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

  .faq-answer p {
    padding: 0 8px 22px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
  }

  /* ===== CTA ===== */
  .cta-section {
    position: relative;
    padding: 100px 0;
    text-align: center;
    background: var(--bg-deep);
    overflow: hidden;
  }

  .cta-section::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 212, 170, 0.15), transparent 70%);
    pointer-events: none;
  }

  .cta-section::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 50% 100%, rgba(0, 212, 170, 0.08) 12px, transparent 13px);
    background-size: 32px 16px;
    pointer-events: none;
  }

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

  .cta-title {
    font-size: 36px;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 16px;
  }

  .cta-subtitle {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
  }

  /* ===== Footer ===== */
  .site-footer {
    background: var(--bg-deep);
    border-top: 1px solid transparent;
    position: relative;
  }

  .site-footer::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 170, 0.5), transparent);
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding: 64px 0 48px;
  }

  .footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
  }

  .footer-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 320px;
  }

  .footer-title {
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 18px;
  }

  .footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .footer-link {
    font-size: 14px;
    color: var(--text-secondary);
    transition: color 0.25s;
  }

  .footer-link:hover {
    color: var(--accent);
  }

  .footer-info {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-size: 14px;
    color: var(--text-secondary);
  }

  .footer-info li {
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .footer-info i {
    color: var(--accent);
    font-size: 13px;
    width: 18px;
  }

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 20px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: var(--text-muted);
  }

  .footer-bottom a {
    color: var(--text-secondary);
  }

  .footer-bottom a:hover {
    color: var(--accent);
  }

  /* ===== 响应式 ===== */
  @media (max-width: 1024px) {
    .scenario-grid,
    .quick-grid {
      grid-template-columns: repeat(2, 1fr);
    }

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

  @media (max-width: 768px) {
    .site-header {
      height: 64px;
    }

    .header-inner {
      padding: 0 16px;
    }

    .nav-toggle {
      display: inline-flex;
    }

    .nav-list {
      position: absolute;
      top: 64px;
      left: 16px;
      right: 16px;
      flex-direction: column;
      align-items: stretch;
      background: rgba(6, 13, 24, 0.96);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--glass-border);
      border-radius: 16px;
      padding: 16px;
      display: none;
      box-shadow: var(--shadow-hover);
    }

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

    .nav-chip {
      justify-content: center;
      padding: 12px 18px;
    }

    .header-cta {
      display: none;
    }

    .hero-page {
      min-height: 480px;
      padding: 100px 0 60px;
    }

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

    .hero-subtitle {
      font-size: 14px;
    }

    .page-section {
      padding: 60px 0;
    }

    .section-title {
      font-size: 24px;
    }

    .layout-split {
      grid-template-columns: 1fr;
      gap: 24px;
    }

    .side-nav {
      position: static;
      padding: 16px;
    }

    .side-nav-list {
      flex-direction: row;
      flex-wrap: wrap;
      gap: 8px;
    }

    .side-nav-link {
      padding: 8px 14px;
      font-size: 13px;
    }

    .side-nav-title {
      margin-bottom: 12px;
      padding-bottom: 10px;
    }

    .info-card {
      grid-template-columns: 1fr;
      padding: 20px;
    }

    .info-card.flip {
      direction: ltr;
    }

    .info-card-media {
      min-height: 180px;
    }

    .scenario-grid,
    .quick-grid,
    .steps-grid {
      grid-template-columns: 1fr;
      gap: 16px;
    }

    .cta-section {
      padding: 60px 0;
    }

    .cta-title {
      font-size: 26px;
    }

    .footer-grid {
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      padding: 48px 0 32px;
    }

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

    .breadcrumb {
      margin-bottom: 32px;
    }
  }

  @media (max-width: 520px) {
    .footer-grid {
      grid-template-columns: 1fr;
    }

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

    .hero-buttons .btn-primary,
    .hero-buttons .btn-outline {
      width: 100%;
      justify-content: center;
    }
  }