/* roulang page: index */
:root {
  --bg: #0B0E14;
  --panel: #0F141C;
  --panel2: #121A24;
  --primary: #FF5C2A;
  --primary2: #FF7A4A;
  --accent: #C950FF;
  --cyan: #3DF0FF;
  --border: rgba(255,255,255,0.08);
  --text: #F2F5F9;
  --text-dim: #9AA4B2;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow-neon: 0 0 0 1px rgba(255,92,42,0.25), 0 8px 40px rgba(0,0,0,0.5);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
h1, h2, h3, h4 { font-weight: 800; line-height: 1.25; color: var(--text); }
h1 { font-size: clamp(1.75rem, 3vw, 2.75rem); }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.25rem; }
.container { width: min(1200px, 92%); margin-inline: auto; }
section { position: relative; }
.section-pad { padding: 80px 0; }

/* 顶部通告条 */
.announce-bar {
  background: #080A0F;
  border-bottom: 1px solid rgba(255,92,42,0.18);
  padding: 8px 16px;
  text-align: center;
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: 0.02em;
}
.announce-bar .dot {
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px var(--primary);
  margin-right: 8px;
  vertical-align: middle;
}

/* 导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11,14,20,0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.site-header::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,92,42,0.5), transparent);
  pointer-events: none;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  font-size: 19px;
  font-weight: 900;
  letter-spacing: 0.02em;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo::before {
  content: '';
  width: 10px; height: 10px;
  border-radius: 3px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 0 14px rgba(255,92,42,0.6);
  display: inline-block;
}
.logo span { color: var(--primary); }
.desktop-nav { display: flex; align-items: center; gap: 32px; }
.nav-link {
  position: relative;
  padding: 8px 2px;
  font-size: 14px;
  font-weight: 500;
  color: rgba(255,255,255,0.72);
  transition: color .3s;
  white-space: nowrap;
}
.nav-link:hover { color: var(--cyan); }
.nav-link.active {
  color: var(--primary);
  text-shadow: 0 0 12px rgba(255,92,42,0.5);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--primary);
  box-shadow: 0 0 8px rgba(255,92,42,0.6);
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, #FF5C2A, #FF8A50);
  color: #0B0E14;
  font-weight: 800;
  font-size: 14px;
  line-height: 1.2;
  transition: all .3s;
  box-shadow: 0 0 0 1px rgba(255,92,42,0.3), 0 4px 20px rgba(255,92,42,0.22);
  white-space: nowrap;
}
.btn-primary:hover {
  background: linear-gradient(135deg, #FF7A4A, #FF9A68);
  box-shadow: 0 0 22px rgba(255,92,42,0.45);
  transform: translateY(-1px);
}
.btn-primary:active { transform: scale(0.97); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.2);
  color: var(--text);
  font-weight: 600;
  font-size: 14px;
  transition: all .3s;
  background: rgba(255,255,255,0.03);
  white-space: nowrap;
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 0 16px rgba(255,92,42,0.2);
}
.menu-toggle {
  display: none;
  width: 40px; height: 40px;
  border: 1px solid var(--border);
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text);
}
.mobile-menu {
  display: none;
  position: absolute;
  top: 64px;
  left: 0; right: 0;
  background: rgba(11,14,20,0.97);
  padding: 20px 24px 28px;
  flex-direction: column;
  gap: 16px;
  border-bottom: 1px solid rgba(255,92,42,0.2);
}
.mobile-menu.open { display: flex; }
.mobile-menu .nav-link { font-size: 16px; padding: 6px 0; }
.mobile-menu .btn-primary { justify-content: center; margin-top: 8px; }

/* 倒计时 */
.countdown-section { padding: 32px 0 0; }
.countdown-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  padding: 18px 28px;
  border-radius: 16px;
  background: rgba(15,20,28,0.85);
  border: 1px solid rgba(255,92,42,0.35);
  box-shadow: 0 0 30px rgba(255,92,42,0.08), inset 0 0 24px rgba(0,0,0,0.4);
  flex-wrap: wrap;
}
.countdown-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.countdown-label::before {
  content: '';
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}
.countdown-digits {
  display: flex;
  align-items: flex-end;
  gap: 6px;
}
.cd-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 54px;
}
.cd-item span {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 30px;
  font-weight: 800;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  text-shadow: 0 0 14px rgba(61,240,255,0.35);
}
.cd-item small {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 4px;
  font-weight: 500;
}
.cd-sep {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary);
  padding-bottom: 14px;
}
.cd-finished {
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
  text-shadow: 0 0 12px rgba(255,92,42,0.3);
}

/* Hero */
.hero {
  position: relative;
  padding: 110px 0 120px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity: 0.4;
  filter: saturate(1.1);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(11,14,20,0.65) 0%, rgba(11,14,20,0.88) 100%),
    radial-gradient(circle at 60% 40%, rgba(255,92,42,0.12) 0%, transparent 50%);
}
.hero-grid {
  position: absolute;
  inset: 0;
  opacity: 0.12;
  background-image:
    linear-gradient(rgba(255,255,255,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.07) 1px, transparent 1px);
  background-size: 56px 56px;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 860px;
}
.hero h1 {
  font-size: clamp(1.9rem, 4vw, 3.2rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 20px;
}
.hero h1 .rk-grad {
  background: linear-gradient(120deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  font-size: 17px;
  color: rgba(255,255,255,0.82);
  max-width: 600px;
  margin-bottom: 32px;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}
.hero-meta {
  margin-top: 40px;
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.hero-meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.hero-meta-item strong {
  font-size: 15px;
  font-weight: 800;
  color: #fff;
}
.hero-meta-item small {
  font-size: 13px;
  color: var(--text-dim);
}

/* 卖点区 */
.feature-section {
  background: linear-gradient(180deg, var(--bg) 0%, var(--panel) 100%);
  padding: 90px 0;
}
.section-head {
  margin-bottom: 56px;
  max-width: 720px;
}
.section-head h2 { font-size: clamp(1.5rem, 2.5vw, 2.1rem); }
.section-head .lead {
  color: var(--text-dim);
  font-size: 15px;
  margin-top: 14px;
  line-height: 1.7;
}
.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.feature-list {
  display: flex;
  flex-direction: column;
  gap: 40px;
}
.feature-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.feature-num {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  font-weight: 800;
  color: var(--primary);
  border: 1px solid rgba(255,92,42,0.35);
  border-radius: 8px;
  padding: 6px 10px;
  background: rgba(255,92,42,0.08);
  flex-shrink: 0;
  letter-spacing: 0.05em;
}
.feature-text h3 {
  font-size: 18px;
  margin-bottom: 6px;
  font-weight: 800;
}
.feature-text p {
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.65;
}
.feature-visual {
  position: relative;
}
.feature-visual img {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-neon);
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 340px;
}
.float-card {
  position: absolute;
  right: -14px;
  bottom: 24px;
  background: rgba(15,20,28,0.95);
  border: 1px solid rgba(255,92,42,0.25);
  border-radius: 12px;
  padding: 14px 18px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.5);
  font-size: 13px;
  color: var(--text);
  max-width: 220px;
  line-height: 1.5;
}
.float-card strong {
  display: block;
  color: var(--primary);
  font-size: 14px;
  margin-bottom: 4px;
}

/* 图墙 */
.gallery-section {
  background: var(--bg);
  padding: 90px 0;
}
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: 200px;
  gap: 20px;
}
.g-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  display: block;
}
.g-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.g-item:hover img { transform: scale(1.04); }
.g-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(11,14,20,0.85) 100%);
  transition: opacity .4s;
}
.g-item:hover::after {
  background: linear-gradient(180deg, rgba(11,14,20,0.25) 0%, rgba(11,14,20,0.88) 100%);
}
.g-text {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 16px;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.g-text span {
  font-size: 15px;
  font-weight: 800;
  color: #fff;
  text-shadow: 0 2px 8px rgba(0,0,0,0.5);
}
.g-text i {
  font-style: normal;
  font-size: 18px;
  color: var(--primary);
  opacity: 0;
  transform: translateX(-6px);
  transition: all .4s;
}
.g-item:hover .g-text i {
  opacity: 1;
  transform: translateX(0);
}

/* CTA */
.cta-section {
  position: relative;
  padding: 90px 0;
  background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat fixed;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(11,14,20,0.88);
}
.cta-box {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}
.cta-box h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  margin-bottom: 16px;
}
.cta-box p {
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 32px;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* CMS 列表 */
.cms-section {
  background: var(--panel);
  padding: 90px 0;
}
.cms-feed {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 8px;
}
.cms-card {
  display: flex;
  gap: 24px;
  background: rgba(18,26,36,0.7);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  transition: all .3s;
  align-items: center;
}
.cms-card:hover {
  border-color: rgba(255,92,42,0.35);
  box-shadow: 0 4px 30px rgba(0,0,0,0.4);
  transform: translateY(-2px);
}
.cms-cover {
  width: 200px;
  height: 120px;
  flex-shrink: 0;
  overflow: hidden;
  border-radius: 10px;
  background: var(--panel2);
}
.cms-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s;
}
.cms-card:hover .cms-cover img {
  transform: scale(1.05);
}
.cms-body {
  flex: 1;
  min-width: 0;
}
.cms-body h3 {
  font-size: 17px;
  font-weight: 800;
  margin-bottom: 6px;
  color: var(--text);
  transition: color .3s;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.cms-card:hover .cms-body h3 { color: var(--primary); }
.cms-body p {
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.cms-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-dim);
}
.cms-meta time {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  color: rgba(255,255,255,0.55);
}
.cms-meta .read-more {
  color: var(--primary);
  font-weight: 600;
}
.cms-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  border: 1px solid rgba(201,80,255,0.4);
  border-radius: 999px;
  padding: 2px 12px;
  margin-bottom: 10px;
  background: rgba(201,80,255,0.08);
}
.empty-state {
  text-align: center;
  padding: 60px 0;
  color: var(--text-dim);
  font-size: 15px;
  border: 1px dashed rgba(255,255,255,0.15);
  border-radius: var(--radius);
  background: rgba(255,255,255,0.02);
}

/* FAQ */
.faq-section {
  background: var(--bg);
  padding: 90px 0;
}
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(15,20,28,0.6);
  overflow: hidden;
  transition: border-color .3s, box-shadow .3s;
}
.faq-item.open {
  border-color: rgba(255,92,42,0.4);
  box-shadow: 0 0 24px rgba(255,92,42,0.06);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 24px;
  font-weight: 700;
  font-size: 16px;
  text-align: left;
  color: var(--text);
  transition: color .3s;
}
.faq-question:hover { color: var(--primary); }
.faq-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  flex-shrink: 0;
}
.faq-icon {
  margin-left: auto;
  font-size: 20px;
  color: var(--text-dim);
  transition: transform .3s, color .3s;
  font-weight: 400;
  flex-shrink: 0;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  color: var(--primary);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease;
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.75;
}
.faq-item.open .faq-answer {
  max-height: 400px;
}
.faq-answer-inner {
  padding: 0 24px 22px 62px;
}

/* 页脚 */
.site-footer {
  background: #080A0F;
  border-top: 1px solid rgba(255,92,42,0.15);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 44px;
}
.footer-logo {
  font-size: 20px;
  font-weight: 900;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-logo::before {
  content: '';
  width: 10px; height: 10px;
  border-radius: 3px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 0 12px rgba(255,92,42,0.5);
}
.footer-desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
  max-width: 320px;
}
.footer-title {
  font-size: 15px;
  font-weight: 800;
  margin-bottom: 16px;
  color: #fff;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 14px;
  color: var(--text-dim);
  transition: color .3s;
}
.footer-links a:hover { color: var(--primary); }
.footer-info {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.8;
}
.footer-info a { color: var(--text); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.35);
}

/* 响应式 */
@media (max-width: 1024px) {
  .feature-grid { grid-template-columns: 1fr; gap: 40px; }
  .feature-visual img { min-height: 260px; }
  .gallery-grid { grid-auto-rows: 170px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .desktop-nav { display: none; }
  .menu-toggle { display: inline-flex; }
  .section-pad { padding: 56px 0; }
  .countdown-bar { flex-direction: column; gap: 16px; padding: 18px 16px; }
  .hero { padding: 70px 0 80px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn-primary,
  .hero-actions .btn-outline { justify-content: center; }
  .cms-card { flex-direction: column; align-items: flex-start; padding: 16px; }
  .cms-cover { width: 100%; height: 180px; }
  .gallery-grid { grid-template-columns: 1fr 1fr; grid-auto-rows: 140px; }
  .g-item:nth-child(1), .g-item:nth-child(2) { grid-column: span 1; grid-row: span 1; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-section { background-attachment: scroll; }
}
@media (max-width: 520px) {
  .container { width: 90%; }
  .logo { font-size: 16px; }
  .hero h1 { font-size: 1.5rem; }
  .hero-sub { font-size: 15px; }
  .countdown-label { font-size: 13px; }
  .cd-item { min-width: 44px; }
  .cd-item span { font-size: 24px; }
  .gallery-grid { grid-template-columns: 1fr; grid-auto-rows: 160px; }
  .faq-question { padding: 16px 18px; font-size: 15px; }
  .faq-answer-inner { padding: 0 18px 18px 48px; }
}

/* roulang page: article */
:root {
  --bg-primary: #0B0E14;
  --bg-secondary: #0F141C;
  --bg-tertiary: #121A24;
  --primary: #FF5C2A;
  --primary-hover: #FF7A4A;
  --accent: #C950FF;
  --cyan: #3DF0FF;
  --text-primary: #F0F2F5;
  --text-secondary: #A0A6B0;
  --text-muted: #69707A;
  --border: rgba(255, 255, 255, 0.08);
  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --shadow-glow: 0 0 0 1px rgba(255, 92, 42, 0.25), 0 8px 40px rgba(0, 0, 0, 0.5);
  --container-width: 1200px;
  --space-section: 96px;
  --space-section-mobile: 48px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; }

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

/* 导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 14, 20, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 92, 42, 0.2);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 24px;
}
.logo {
  font-size: 1.25rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
  letter-spacing: -0.01em;
}
.desktop-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 2px;
  transition: color 0.3s;
}
.nav-link:hover { color: var(--cyan); }
.nav-link.active {
  color: var(--primary);
  text-shadow: 0 0 12px rgba(255, 92, 42, 0.4);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary);
  box-shadow: 0 0 8px rgba(255, 92, 42, 0.6);
  border-radius: 2px;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: linear-gradient(135deg, var(--primary), #E8431A);
  color: #fff;
  font-weight: 700;
  padding: 10px 22px;
  border-radius: var(--radius-md);
  transition: all 0.3s;
  border: none;
  cursor: pointer;
  font-size: 0.9rem;
  line-height: 1.4;
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-hover), var(--primary));
  box-shadow: 0 0 20px rgba(255, 92, 42, 0.4);
}
.btn-primary:active { transform: scale(0.98); }
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
  padding: 4px;
}
.mobile-menu {
  display: none;
  flex-direction: column;
  background: rgba(11, 14, 20, 0.98);
  padding: 16px 24px 24px;
  border-top: 1px solid var(--border);
}
.mobile-menu .nav-link { padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.04); }
.mobile-menu .btn-primary { margin-top: 16px; justify-content: center; }

/* 主内容区 */
.page-main { padding: 40px 0 80px; }

/* 面包屑 */
.breadcrumb {
  padding: 16px 0 24px;
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.breadcrumb a { color: var(--text-secondary); transition: color 0.3s; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--text-muted); }
.breadcrumb .current {
  color: var(--text-secondary);
  max-width: 300px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 文章头 */
.article-wrapper { max-width: 860px; margin: 0 auto; }
.article-header { margin-bottom: 32px; padding-bottom: 32px; border-bottom: 1px solid var(--border); }
.tag-badge {
  display: inline-block;
  padding: 4px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  border: 1px solid rgba(201, 80, 255, 0.3);
  border-radius: 100px;
  background: rgba(201, 80, 255, 0.08);
  letter-spacing: 0.02em;
}
.article-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 900;
  line-height: 1.35;
  margin: 16px 0 16px;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  font-size: 0.875rem;
  color: var(--text-muted);
}
.article-meta i { margin-right: 6px; color: var(--primary); }

/* 正文 */
.article-body {
  max-width: 760px;
  margin: 0 auto;
  font-size: 1rem;
  line-height: 1.75;
  color: #D3D8E0;
}
.article-body h2 {
  font-size: 1.5rem;
  font-weight: 800;
  margin: 32px 0 16px;
  color: var(--text-primary);
  line-height: 1.4;
}
.article-body h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 24px 0 12px;
  color: var(--text-primary);
  line-height: 1.4;
}
.article-body p { margin-bottom: 1.5em; }
.article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 4px; word-break: break-all; }
.article-body a:hover { color: var(--primary-hover); }
.article-body blockquote {
  border-left: 3px solid var(--primary);
  background: rgba(255, 92, 42, 0.06);
  padding: 16px 20px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: #CBB8B0;
  margin: 24px 0;
}
.article-body ul, .article-body ol { margin: 0 0 1.5em 1.5em; padding: 0; }
.article-body li { margin-bottom: 0.75em; }
.article-body ul li::marker { color: var(--primary); }
.article-body ol li::marker { color: var(--accent); font-weight: 700; }
.article-body img { border-radius: var(--radius-lg); margin: 28px auto; }
.article-body figcaption {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: -20px;
  margin-bottom: 28px;
}
.article-body pre {
  background: #131822;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  overflow-x: auto;
  font-family: 'SFMono-Regular', Consolas, monospace;
  font-size: 0.9rem;
  margin: 24px 0;
  color: #B9C4D0;
}
.article-body code {
  font-family: 'SFMono-Regular', Consolas, monospace;
  font-size: 0.9em;
  padding: 2px 6px;
  background: #1A2230;
  border-radius: 4px;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.95rem;
}
.article-body table th,
.article-body table td {
  border: 1px solid var(--border);
  padding: 12px 16px;
  text-align: left;
}
.article-body table th {
  background: var(--bg-tertiary);
  font-weight: 700;
  color: var(--text-primary);
}
.article-body .note {
  background: rgba(201, 80, 255, 0.06);
  border: 1px solid rgba(201, 80, 255, 0.2);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  font-size: 0.9rem;
  color: #C9A5E5;
  margin: 24px 0;
}

/* 未找到 */
.not-found {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-muted);
}
.not-found i { font-size: 3rem; color: var(--primary); margin-bottom: 20px; }
.not-found p { font-size: 1.1rem; margin-bottom: 24px; }

/* 相关推荐 */
.related-section { padding: 80px 0 0; }
.section-title {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-title::before {
  content: '';
  width: 4px;
  height: 24px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  border-radius: 2px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s;
}
.related-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 92, 42, 0.3);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}
.related-card img { width: 100%; height: 160px; object-fit: cover; transition: transform 0.4s; }
.related-card:hover img { transform: scale(1.03); }
.related-card-body { padding: 20px; }
.related-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
  transition: color 0.3s;
}
.related-card:hover .related-card-title { color: var(--primary); }
.related-card-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.6;
}
.back-list { margin-top: 32px; text-align: center; }
.back-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color 0.3s;
}
.back-list a:hover { color: var(--primary); }

/* FAQ */
.faq-section { padding: 80px 0; }
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color 0.3s;
}
.faq-item.active { border-color: rgba(201, 80, 255, 0.4); }
.faq-question {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  cursor: pointer;
  font-weight: 600;
  color: var(--text-primary);
  transition: color 0.2s;
  user-select: none;
}
.faq-question::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px rgba(201, 80, 255, 0.5);
  flex-shrink: 0;
}
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s; }
.faq-answer-inner { padding: 0 20px 18px 44px; color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; }
.faq-item.active .faq-answer { max-height: 300px; }

/* CTA */
.cta-section { padding: 80px 0; background: linear-gradient(180deg, transparent, rgba(255, 92, 42, 0.04), transparent); }
.cta-inner {
  background: var(--bg-tertiary);
  border: 1px solid rgba(255, 92, 42, 0.3);
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-inner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity: 0.15;
}
.cta-inner h2 { position: relative; font-size: 1.75rem; font-weight: 800; margin-bottom: 12px; }
.cta-inner p { position: relative; color: var(--text-secondary); max-width: 560px; margin: 0 auto 24px; }
.cta-inner .btn-primary { position: relative; }

/* 页脚 */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-tertiary);
  padding: 48px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 32px;
}
.footer-logo {
  font-size: 1.2rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 16px;
}
.footer-desc { color: var(--text-secondary); font-size: 0.875rem; line-height: 1.7; max-width: 360px; }
.footer-title { color: var(--text-primary); font-weight: 700; margin-bottom: 16px; font-size: 1rem; }
.footer-links { display: flex; flex-direction: column; gap: 12px; }
.footer-links a { color: var(--text-secondary); font-size: 0.875rem; transition: color 0.3s; }
.footer-links a:hover { color: var(--primary); }
.footer-info { color: var(--text-muted); font-size: 0.8rem; line-height: 1.8; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
}

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

@media (max-width: 768px) {
  .desktop-nav { display: none; }
  .menu-toggle { display: block; }
  .mobile-menu.open { display: flex; }
  .page-main { padding: 24px 0 48px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .cta-inner { padding: 32px 20px; }
  .related-section { padding-top: 48px; }
  .faq-section { padding: 48px 0; }
  .cta-section { padding: 48px 0; }
}

@media (max-width: 520px) {
  .related-grid { grid-template-columns: 1fr; }
  .header-inner { gap: 12px; }
  .container { padding: 0 16px; }
  .breadcrumb .current { max-width: 180px; }
  .article-title { font-size: 1.5rem; }
  .cta-inner h2 { font-size: 1.4rem; }
  .logo { font-size: 1.1rem; }
}

/* roulang page: category1 */
:root {
  --bg-base: #0B0E14;
  --bg-elev: #0F141C;
  --bg-card: #121A24;
  --primary: #FF5C2A;
  --primary-hover: #FF7A4A;
  --secondary: #C950FF;
  --accent: #3DF0FF;
  --text-main: #F2F5F9;
  --text-weak: #9AA7B8;
  --border: rgba(255,255,255,0.08);
  --radius: 14px;
  --radius-sm: 10px;
  --glow: 0 0 0 1px rgba(255,92,42,0.25), 0 8px 40px rgba(0,0,0,0.5);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg-base);
  color: var(--text-main);
  line-height: 1.75;
  font-size: 16px;
  margin: 0;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; transition: color 0.2s, border-color 0.2s, box-shadow 0.25s, transform 0.2s; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; }

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

/* ---- 导航 ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11,14,20,0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,92,42,0.28);
  box-shadow: 0 0 24px rgba(255,92,42,0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 24px;
}
.logo {
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--primary);
  letter-spacing: 0.02em;
  white-space: nowrap;
  text-shadow: 0 0 20px rgba(255,92,42,0.3);
}
.logo:hover { color: var(--primary-hover); }
.desktop-nav { display: flex; gap: 28px; align-items: center; }
.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-weak);
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
  line-height: 1.4;
  white-space: nowrap;
}
.nav-link:hover { color: var(--accent); }
.nav-link.active {
  color: var(--primary);
  border-bottom: 2px solid var(--primary);
  text-shadow: 0 0 14px rgba(255,92,42,0.45);
}
.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-main);
  font-size: 1.25rem;
  line-height: 1;
  border-radius: 8px;
  padding: 8px 12px;
  transition: border-color .2s;
}
.menu-toggle:hover { border-color: var(--primary); }
.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 14px;
  padding: 18px 24px 24px;
  background: rgba(11,14,20,0.97);
  border-top: 1px solid var(--border);
}
.mobile-menu.open { display: flex; }
.mobile-menu .nav-link { padding: 8px 0; font-size: 1rem; border-bottom: 1px solid transparent; }
.mobile-menu .btn-primary { margin-top: 8px; justify-content: center; }

/* ---- 按钮 ---- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: linear-gradient(135deg, #FF5C2A 0%, #FF7A4A 100%);
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  border: none;
  white-space: nowrap;
  transition: all .25s ease;
  box-shadow: 0 0 0 1px rgba(255,92,42,0.2);
}
.btn-primary:hover {
  box-shadow: 0 0 0 1px rgba(255,92,42,0.5), 0 0 28px rgba(255,92,42,0.35);
  background: linear-gradient(135deg, #FF7A4A 0%, #FF8B5E 100%);
  transform: translateY(-1px);
}
.btn-primary:active { transform: scale(0.98); }
.btn-lg { padding: 14px 36px; font-size: 1.05rem; border-radius: 12px; }

/* ---- 区块通用 ---- */
.section { padding: 80px 0; }
.section-alt { background: var(--bg-elev); }
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head h2 {
  font-size: 1.75rem;
  font-weight: 900;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.section-head p { color: var(--text-weak); font-size: 1rem; }

/* ---- 页头横幅 ---- */
.page-hero {
  position: relative;
  padding: 100px 0 80px;
  background: url('/assets/images/backpic/back-1.webp') center top / cover no-repeat;
  border-bottom: 1px solid var(--border);
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(11,14,20,0.85) 0%, rgba(11,14,20,0.65) 45%, rgba(11,14,20,0.35) 100%),
    linear-gradient(180deg, rgba(11,14,20,0.5) 0%, rgba(11,14,20,0.9) 100%);
}
.page-hero .container { position: relative; z-index: 1; }
.hero-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--secondary);
  border: 1px solid rgba(201,80,255,0.4);
  border-radius: 999px;
  padding: 4px 14px;
  margin-bottom: 20px;
  background: rgba(201,80,255,0.08);
  text-transform: uppercase;
}
.page-hero h1 {
  font-size: clamp(1.75rem, 3vw, 2.75rem);
  font-weight: 900;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
  line-height: 1.2;
}
.page-hero p {
  color: var(--text-weak);
  font-size: 1.06rem;
  max-width: 640px;
  margin-bottom: 32px;
}

/* ---- 入口总览 ---- */
.split-row {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}
.entry-list { display: flex; flex-direction: column; gap: 28px; }
.entry-item {
  display: flex;
  gap: 18px;
  padding: 18px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color .25s, box-shadow .25s, transform .25s;
}
.entry-item:hover {
  border-color: rgba(255,92,42,0.35);
  box-shadow: var(--glow);
  transform: translateX(4px);
}
.entry-num {
  font-family: 'SF Mono', 'Cascadia Code', Consolas, monospace;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
  opacity: 0.85;
  flex-shrink: 0;
}
.entry-item h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 4px; }
.entry-item p { color: var(--text-weak); font-size: 0.92rem; margin: 0; line-height: 1.6; }

.image-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
  box-shadow: 0 8px 40px rgba(0,0,0,0.4);
}
.image-card img { width: 100%; height: auto; object-fit: cover; transition: transform .6s ease; }
.image-card:hover img { transform: scale(1.03); }
.image-tag {
  position: absolute;
  left: 16px;
  bottom: 16px;
  background: rgba(11,14,20,0.75);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255,92,42,0.4);
  color: var(--text-main);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 999px;
  letter-spacing: 0.02em;
}

/* ---- 四步流程 ---- */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: border-color .3s, box-shadow .3s, transform .3s;
  position: relative;
}
.step-card:hover {
  border-color: rgba(201,80,255,0.35);
  box-shadow: 0 0 0 1px rgba(201,80,255,0.15), 0 8px 40px rgba(0,0,0,0.45);
  transform: translateY(-4px);
}
.step-num {
  display: block;
  font-family: 'SF Mono', 'Cascadia Code', Consolas, monospace;
  font-size: 2.6rem;
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--primary);
  margin-bottom: 12px;
}
.step-card h3 { font-size: 1.08rem; font-weight: 700; margin-bottom: 6px; }
.step-card p { color: var(--text-weak); font-size: 0.9rem; margin: 0; line-height: 1.6; }

/* ---- 场景选择 ---- */
.scenario-list { display: flex; flex-direction: column; gap: 24px; max-width: 960px; }
.scenario-item {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 32px;
  transition: border-color .3s, box-shadow .3s;
}
.scenario-item:hover { border-color: rgba(255,92,42,0.25); box-shadow: var(--glow); }
.scenario-label { display: flex; flex-direction: column; gap: 8px; }
.scenario-tag {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--secondary);
  border: 1px solid rgba(201,80,255,0.35);
  border-radius: 999px;
  padding: 2px 10px;
  align-self: flex-start;
  background: rgba(201,80,255,0.06);
}
.scenario-label h3 { font-size: 1.2rem; font-weight: 700; }
.scenario-suggest {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--text-weak);
  font-size: 0.96rem;
  line-height: 1.7;
}
.suggest-arrow {
  font-size: 1.4rem;
  color: var(--primary);
  flex-shrink: 0;
  transition: transform .25s;
}
.scenario-item:hover .suggest-arrow { transform: translateX(4px); }

/* ---- 注意事项 ---- */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.tip-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 28px;
  display: flex;
  gap: 18px;
  transition: border-color .3s, box-shadow .3s;
}
.tip-card:hover { border-color: rgba(61,240,255,0.3); box-shadow: 0 0 0 1px rgba(61,240,255,0.1), 0 8px 36px rgba(0,0,0,0.45); }
.tip-icon {
  font-size: 1.4rem;
  color: var(--accent);
  flex-shrink: 0;
  line-height: 1.4;
}
.tip-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 4px; }
.tip-card p { color: var(--text-weak); font-size: 0.9rem; margin: 0; line-height: 1.6; }

/* ---- FAQ ---- */
.faq-wrap { max-width: 860px; }
.faq-item {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color .3s, box-shadow .3s;
}
.faq-item[open] { border-color: rgba(255,92,42,0.3); box-shadow: var(--glow); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 22px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-weight: 700;
  font-size: 1rem;
  transition: color .2s;
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::marker { display: none; }
.faq-item summary:hover { color: var(--primary); }
.faq-item summary .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--secondary);
  box-shadow: 0 0 12px rgba(201,80,255,0.7);
  flex-shrink: 0;
}
.faq-item[open] summary { color: var(--primary); }
.faq-item .faq-answer {
  padding: 16px 22px 20px 44px;
  color: var(--text-weak);
  font-size: 0.95rem;
  line-height: 1.75;
  border-top: 1px solid rgba(255,255,255,0.06);
  background: rgba(255,255,255,0.015);
}

/* ---- CTA ---- */
.cta-section {
  background: var(--bg-elev);
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 80px 24px;
}
.cta-section h2 { font-size: clamp(1.5rem, 2.5vw, 2.2rem); font-weight: 900; margin-bottom: 12px; }
.cta-section p { color: var(--text-weak); font-size: 1.02rem; max-width: 520px; margin: 0 auto 28px; }

/* ---- 页脚 ---- */
.site-footer {
  background: #080B10;
  border-top: 1px solid rgba(255,92,42,0.15);
  padding: 56px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 40px;
}
.footer-logo {
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--primary);
  margin-bottom: 10px;
  letter-spacing: 0.02em;
}
.footer-desc { color: var(--text-weak); font-size: 0.9rem; line-height: 1.7; max-width: 300px; margin: 0; }
.footer-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text-main);
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { color: var(--text-weak); font-size: 0.9rem; }
.footer-links a:hover { color: var(--primary); }
.footer-info { color: var(--text-weak); font-size: 0.88rem; line-height: 1.8; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 18px 0;
  text-align: center;
  color: var(--text-weak);
  font-size: 0.85rem;
}

/* ---- 响应式 ---- */
@media (max-width: 1024px) {
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .split-row { grid-template-columns: 1fr; gap: 40px; }
  .scenario-item { grid-template-columns: 1fr; gap: 20px; padding: 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .desktop-nav { display: none; }
  .menu-toggle { display: block; }
  .section { padding: 56px 0; }
  .page-hero { padding: 70px 0 56px; }
  .page-hero p { font-size: 0.95rem; }
  .section-head h2 { font-size: 1.45rem; }
  .tips-grid { grid-template-columns: 1fr; }
  .steps-grid { gap: 16px; }
  .step-card { padding: 22px 18px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .scenario-item { padding: 20px; }
}

@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .steps-grid { grid-template-columns: 1fr; }
  .entry-item { flex-direction: column; gap: 8px; padding: 16px; }
  .entry-num { font-size: 0.9rem; }
  .btn-lg { width: 100%; }
  .header-inner { height: 60px; gap: 12px; }
  .logo { font-size: 1.12rem; }
}

/* roulang page: category3 */
:root {
    --bg-base: #0b0e14;
    --bg-alt: #0f141c;
    --bg-deep: #121a24;
    --primary: #ff5c2a;
    --primary-hover: #ff7a4a;
    --secondary: #c950ff;
    --accent: #3df0ff;
    --text-main: #f2f4f8;
    --text-muted: #9aa4b5;
    --border-color: rgba(255, 255, 255, 0.08);
    --radius-card: 14px;
    --radius-img: 12px;
    --radius-btn: 10px;
    --glow-shadow: 0 0 0 1px rgba(255, 92, 42, 0.25), 0 8px 40px rgba(0, 0, 0, 0.5);
  }

  * {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
    background: var(--bg-base);
    color: var(--text-main);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
  }

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

  a {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s ease;
  }

  button {
    font-family: inherit;
    cursor: pointer;
  }

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

  /* ====== Notification Bar ====== */
  .notice-bar {
    background: #0d1117;
    border-bottom: 1px solid rgba(255, 92, 42, 0.15);
    padding: 8px 0;
    text-align: center;
    font-size: 13px;
    color: #c9d1dd;
    letter-spacing: 0.4px;
  }

  .notice-bar span {
    color: var(--accent);
    font-weight: 600;
  }

  /* ====== Header / Nav ====== */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(11, 14, 20, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    border-image: linear-gradient(90deg, var(--primary), transparent 70%) 1;
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: 16px;
  }

  .logo {
    font-size: 20px;
    font-weight: 900;
    color: var(--text-main);
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
  }

  .logo::before {
    content: "";
    width: 10px;
    height: 10px;
    border-radius: 3px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    box-shadow: 0 0 10px rgba(255, 92, 42, 0.5);
  }

  .desktop-nav {
    display: flex;
    align-items: center;
    gap: 26px;
  }

  .nav-link {
    font-size: 14.5px;
    font-weight: 500;
    color: #b8c0cc;
    position: relative;
    padding: 6px 2px;
    letter-spacing: 0.3px;
  }

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

  .nav-link.active {
    color: var(--primary);
    font-weight: 700;
  }

  .nav-link.active::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -4px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    box-shadow: 0 0 8px rgba(255, 92, 42, 0.8);
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: linear-gradient(135deg, #ff5c2a, #e84a1c);
    color: #fff !important;
    font-size: 14px;
    font-weight: 600;
    padding: 9px 18px;
    border-radius: var(--radius-btn);
    border: none;
    transition: all 0.2s ease;
    letter-spacing: 0.3px;
    box-shadow: 0 0 0 rgba(255, 92, 42, 0);
  }

  .btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-hover), #ff5c2a);
    box-shadow: 0 0 20px rgba(255, 92, 42, 0.45);
    transform: translateY(-1px);
  }

  .btn-primary:active {
    transform: scale(0.98);
  }

  .menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-main);
    padding: 4px 8px;
    border-radius: 6px;
  }

  .mobile-menu {
    display: none;
    flex-direction: column;
    padding: 16px 24px 20px;
    background: rgba(11, 14, 20, 0.98);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
  }

  .mobile-menu .nav-link {
    padding: 12px 0;
    font-size: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  }

  .mobile-menu .btn-primary {
    margin-top: 14px;
    justify-content: center;
  }

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

  @media (max-width: 1024px) {
    .desktop-nav {
      gap: 16px;
    }
    .nav-link {
      font-size: 13.5px;
    }
  }

  @media (max-width: 768px) {
    .desktop-nav,
    .header-inner > .hidden {
      display: none;
    }
    .menu-toggle {
      display: block;
    }
  }

  /* ====== Hero Banner ====== */
  .cat-hero {
    position: relative;
    padding: 92px 0 92px;
    background: linear-gradient(135deg, rgba(11, 14, 20, 0.92), rgba(15, 20, 28, 0.82)), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  }

  .cat-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 44px 44px;
    pointer-events: none;
  }

  .cat-hero .hero-content {
    position: relative;
    z-index: 2;
    max-width: 780px;
  }

  .cat-hero .hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
    background: rgba(61, 240, 255, 0.08);
    border: 1px solid rgba(61, 240, 255, 0.25);
    padding: 6px 14px;
    border-radius: 999px;
    margin-bottom: 20px;
    letter-spacing: 1px;
  }

  .cat-hero h1 {
    font-size: clamp(1.75rem, 3vw, 2.75rem);
    font-weight: 900;
    line-height: 1.25;
    margin: 0 0 18px;
    letter-spacing: 0.5px;
  }

  .cat-hero h1 span {
    color: var(--primary);
  }

  .cat-hero .hero-sub {
    font-size: 16px;
    color: var(--text-muted);
    max-width: 620px;
    margin-bottom: 30px;
    line-height: 1.8;
  }

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

  .btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    padding: 10px 20px;
    border-radius: var(--radius-btn);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #d8dee8;
    background: transparent;
    transition: all 0.2s ease;
  }

  .btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: 0 0 14px rgba(255, 92, 42, 0.25);
  }

  @media (max-width: 768px) {
    .cat-hero {
      padding: 64px 0 64px;
      text-align: left;
    }
  }

  /* ====== Sections ====== */
  .section {
    padding: 88px 0;
  }

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

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

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

  .section-head .section-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 10px;
    display: block;
  }

  .section-head h2 {
    font-size: 1.75rem;
    font-weight: 900;
    margin: 0 0 12px;
    line-height: 1.3;
    letter-spacing: 0.3px;
  }

  .section-head p {
    color: var(--text-muted);
    font-size: 15px;
    max-width: 680px;
    margin: 0;
  }

  @media (max-width: 768px) {
    .section {
      padding: 56px 0;
    }
    .section-head h2 {
      font-size: 1.4rem;
    }
  }

  /* ====== Intro Split ====== */
  .split-layout {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 52px;
    align-items: center;
  }

  .split-text .lead {
    font-size: 17px;
    line-height: 1.85;
    color: #cdd5e0;
    margin: 0 0 18px;
  }

  .split-text p {
    color: var(--text-muted);
    line-height: 1.8;
    margin: 0 0 14px;
  }

  .split-text .feature-list {
    list-style: none;
    padding: 0;
    margin: 22px 0 0;
  }

  .split-text .feature-list li {
    position: relative;
    padding: 8px 0 8px 30px;
    color: #c2cad6;
    font-size: 14.5px;
  }

  .split-text .feature-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 17px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    box-shadow: 0 0 8px rgba(255, 92, 42, 0.4);
  }

  .split-visual {
    position: relative;
  }

  .split-visual img {
    border-radius: var(--radius-img);
    width: 100%;
    height: 340px;
    object-fit: cover;
    border: 1px solid var(--border-color);
    box-shadow: var(--glow-shadow);
  }

  .split-visual .float-card {
    position: absolute;
    bottom: 18px;
    left: 18px;
    background: rgba(13, 17, 23, 0.92);
    border: 1px solid rgba(255, 92, 42, 0.3);
    border-radius: 12px;
    padding: 14px 20px;
    font-size: 13px;
    color: #e6ebf2;
    backdrop-filter: blur(6px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  }

  .float-card strong {
    color: var(--primary);
    font-size: 16px;
  }

  @media (max-width: 900px) {
    .split-layout {
      grid-template-columns: 1fr;
      gap: 32px;
    }
  }

  /* ====== Alternating Blocks ====== */
  .alt-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    margin-bottom: 64px;
  }

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

  .alt-block.reverse .alt-media {
    order: 2;
  }

  .alt-block.reverse .alt-text {
    order: 1;
  }

  .alt-media img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    border-radius: var(--radius-img);
    border: 1px solid var(--border-color);
    box-shadow: var(--glow-shadow);
  }

  .alt-text h3 {
    font-size: 1.4rem;
    font-weight: 800;
    margin: 0 0 10px;
    line-height: 1.4;
  }

  .alt-text .alt-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    color: var(--secondary);
    background: rgba(201, 80, 255, 0.1);
    border: 1px solid rgba(201, 80, 255, 0.25);
    padding: 4px 12px;
    border-radius: 999px;
    margin-bottom: 14px;
  }

  .alt-text p {
    color: var(--text-muted);
    line-height: 1.8;
    margin: 0;
    font-size: 14.5px;
  }

  @media (max-width: 900px) {
    .alt-block {
      grid-template-columns: 1fr;
      gap: 24px;
      margin-bottom: 48px;
    }
    .alt-block.reverse .alt-media {
      order: 1;
    }
    .alt-block.reverse .alt-text {
      order: 2;
    }
  }

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

  .step-card {
    background: rgba(15, 20, 28, 0.6);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    padding: 28px 24px;
    position: relative;
    transition: all 0.3s ease;
  }

  .step-card:hover {
    border-color: rgba(255, 92, 42, 0.4);
    box-shadow: 0 0 24px rgba(255, 92, 42, 0.12);
    transform: translateY(-4px);
  }

  .step-num {
    font-size: 32px;
    font-weight: 900;
    color: transparent;
    -webkit-text-stroke: 1.5px var(--primary);
    line-height: 1;
    margin-bottom: 16px;
    display: block;
  }

  .step-card h3 {
    font-size: 15px;
    font-weight: 700;
    margin: 0 0 8px;
  }

  .step-card p {
    font-size: 13.5px;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.7;
  }

  @media (max-width: 900px) {
    .steps-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }

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

  /* ====== Stats / Data Panel ====== */
  .stats-section {
    background: linear-gradient(135deg, rgba(11, 14, 20, 0.94), rgba(18, 26, 36, 0.92)), url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
    padding: 84px 0;
    border-top: 1px solid rgba(255, 92, 42, 0.12);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  }

  .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
  }

  .stat-item {
    text-align: center;
    padding: 28px 16px;
    background: rgba(11, 14, 20, 0.55);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    backdrop-filter: blur(4px);
  }

  .stat-item .stat-icon {
    font-size: 24px;
    color: var(--primary);
    margin-bottom: 14px;
  }

  .stat-item .stat-value {
    font-size: 28px;
    font-weight: 900;
    color: var(--text-main);
    margin-bottom: 6px;
    font-variant-numeric: tabular-nums;
  }

  .stat-item .stat-label {
    font-size: 13px;
    color: var(--text-muted);
  }

  @media (max-width: 900px) {
    .stats-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  /* ====== Tips List ====== */
  .tips-layout {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 48px;
    align-items: center;
  }

  .tips-list {
    list-style: none;
    padding: 0;
    margin: 0;
  }

  .tips-list li {
    position: relative;
    padding: 16px 0 16px 34px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    color: #c8d0dc;
    font-size: 14.5px;
    line-height: 1.7;
  }

  .tips-list li:last-child {
    border-bottom: none;
  }

  .tips-list li::before {
    content: "\f0e7";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    left: 0;
    top: 17px;
    color: var(--secondary);
    font-size: 16px;
  }

  .tips-visual img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: var(--radius-img);
    border: 1px solid var(--border-color);
    box-shadow: var(--glow-shadow);
  }

  @media (max-width: 900px) {
    .tips-layout {
      grid-template-columns: 1fr;
      gap: 28px;
    }
  }

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

  .faq-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    background: rgba(15, 20, 28, 0.5);
    margin-bottom: 16px;
    overflow: hidden;
    transition: border-color 0.3s ease;
  }

  .faq-item.open {
    border-color: rgba(255, 92, 42, 0.3);
  }

  .faq-question {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 20px 24px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    color: #e8ecf2;
    user-select: none;
  }

  .faq-question .faq-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--secondary);
    box-shadow: 0 0 10px rgba(201, 80, 255, 0.6);
    flex-shrink: 0;
  }

  .faq-item.open .faq-dot {
    background: var(--primary);
    box-shadow: 0 0 10px rgba(255, 92, 42, 0.6);
  }

  .faq-question .faq-arrow {
    margin-left: auto;
    color: var(--text-muted);
    font-size: 14px;
    transition: transform 0.3s ease;
  }

  .faq-item.open .faq-arrow {
    transform: rotate(180deg);
    color: var(--primary);
  }

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
    padding: 0 24px;
  }

  .faq-item.open .faq-answer {
    max-height: 300px;
    padding-bottom: 20px;
  }

  .faq-answer-inner {
    border-top: 1px solid rgba(255, 255, 255, 0.07);
    padding-top: 14px;
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.8;
  }

  /* ====== CTA ====== */
  .cta-block {
    padding: 88px 0;
    text-align: center;
  }

  .cta-inner {
    max-width: 640px;
    margin: 0 auto;
  }

  .cta-inner h2 {
    font-size: clamp(1.6rem, 2.6vw, 2.2rem);
    font-weight: 900;
    margin: 0 0 14px;
  }

  .cta-inner p {
    color: var(--text-muted);
    font-size: 15px;
    margin: 0 0 30px;
    line-height: 1.8;
  }

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

  /* ====== Footer ====== */
  .site-footer {
    background: #080b10;
    border-top: 1px solid rgba(255, 92, 42, 0.15);
    padding: 56px 0 28px;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 1fr;
    gap: 48px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .footer-logo {
    font-size: 20px;
    font-weight: 900;
    color: var(--text-main);
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .footer-logo::before {
    content: "";
    width: 10px;
    height: 10px;
    border-radius: 3px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    box-shadow: 0 0 10px rgba(255, 92, 42, 0.4);
  }

  .footer-desc {
    font-size: 13.5px;
    color: var(--text-muted);
    line-height: 1.8;
    margin: 0;
    max-width: 320px;
  }

  .footer-title {
    font-size: 14px;
    font-weight: 700;
    color: #e6ebf2;
    margin-bottom: 14px;
  }

  .footer-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .footer-links a {
    font-size: 13.5px;
    color: var(--text-muted);
    transition: color 0.2s ease;
  }

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

  .footer-info {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.9;
  }

  .footer-bottom {
    text-align: center;
    padding-top: 24px;
    font-size: 12.5px;
    color: #6b7484;
  }

  @media (max-width: 900px) {
    .footer-grid {
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
  }

  @media (max-width: 600px) {
    .footer-grid {
      grid-template-columns: 1fr;
      gap: 28px;
    }
  }

/* roulang page: category2 */
:root {
  --bg-base: #0B0E14;
  --bg-alt: #0F141C;
  --bg-deep: #121A24;
  --primary: #FF5C2A;
  --primary-hover: #FF7A4A;
  --accent: #C950FF;
  --cyan: #3DF0FF;
  --text-main: #E8EDF4;
  --text-secondary: #9AA7B8;
  --text-muted: #64748B;
  --border-color: rgba(255,255,255,0.08);
  --radius-card: 14px;
  --radius-img: 12px;
  --radius-btn: 10px;
  --glow-primary: 0 0 0 1px rgba(255,92,42,0.25), 0 8px 40px rgba(0,0,0,0.5);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg-base);
  color: var(--text-main);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input { font-family: inherit; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== 区块 ===== */
.section { padding: 88px 0; }
.section-alt { background: var(--bg-alt); }
.section-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--primary);
  border: 1px solid rgba(255,92,42,0.3);
  padding: 5px 16px;
  border-radius: 999px;
  margin-bottom: 18px;
  background: rgba(255,92,42,0.06);
}
.section-header { margin-bottom: 48px; }
.section-header h2 {
  font-size: clamp(1.5rem, 2.2vw, 1.9rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10,12,18,0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  border-image: linear-gradient(to right, var(--primary), rgba(255,92,42,0.2), transparent) 1;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 24px;
}
.logo {
  font-size: 1.3rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--text-main);
  white-space: nowrap;
  transition: color .2s;
}
.logo:hover { color: var(--primary); }
.logo .logo-accent { color: var(--primary); }
.desktop-nav { display: flex; align-items: center; gap: 28px; }
.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color .2s ease;
  position: relative;
  padding: 6px 0;
  white-space: nowrap;
}
.nav-link:hover { color: var(--cyan); }
.nav-link.active {
  color: var(--primary);
  text-shadow: 0 0 12px rgba(255,92,42,0.5);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: var(--primary);
  box-shadow: 0 0 8px rgba(255,92,42,0.7);
  border-radius: 2px;
}

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--primary) 0%, #E8441A 100%);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  padding: 10px 24px;
  border-radius: var(--radius-btn);
  transition: all .2s ease;
  box-shadow: 0 0 20px rgba(255,92,42,0.2);
  white-space: nowrap;
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary) 100%);
  box-shadow: 0 0 32px rgba(255,92,42,0.5);
  transform: translateY(-1px);
}
.btn-primary:active { transform: scale(0.97); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--text-main);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: var(--radius-btn);
  transition: all .2s ease;
  background: rgba(255,255,255,0.03);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 0 16px rgba(255,92,42,0.18);
}
.btn-outline:active { transform: scale(0.97); }

/* ===== 移动菜单 ===== */
.menu-toggle { display: none; font-size: 24px; color: var(--text-main); padding: 4px; }
.mobile-menu { display: none; }

/* ===== Hero ===== */
.page-hero {
  position: relative;
  padding: 110px 0 90px;
  background-size: cover;
  background-position: center;
  background-color: var(--bg-base);
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11,14,20,0.82) 0%, rgba(11,14,20,0.92) 100%);
}
.page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}
.page-hero .container { position: relative; z-index: 2; }
.hero-badge {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--cyan);
  background: rgba(61,240,255,0.08);
  border: 1px solid rgba(61,240,255,0.3);
  padding: 5px 16px;
  border-radius: 999px;
  margin-bottom: 22px;
  letter-spacing: 0.08em;
}
.page-hero h1 {
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 18px;
}
.page-hero h1 span { color: var(--primary); }
.page-hero p {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 620px;
  margin-bottom: 32px;
  line-height: 1.75;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ===== 核心支持 ===== */
.features-section { background: linear-gradient(180deg, var(--bg-base) 0%, var(--bg-alt) 100%); }
.features-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 64px;
  align-items: center;
}
.features-list { display: flex; flex-direction: column; gap: 24px; }
.feature-item {
  display: flex;
  gap: 20px;
  padding: 26px 24px;
  background: var(--bg-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  transition: all .25s ease;
}
.feature-item:hover {
  border-color: rgba(255,92,42,0.35);
  box-shadow: var(--glow-primary);
  transform: translateY(-4px);
}
.feature-num {
  font-size: 24px;
  font-weight: 900;
  color: var(--primary);
  font-family: "SF Mono", "Consolas", monospace;
  line-height: 1;
  padding-top: 4px;
  flex-shrink: 0;
}
.feature-item h3 { font-size: 17px; font-weight: 700; margin-bottom: 6px; }
.feature-item p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.features-visual { position: relative; }
.features-visual .img-wrap {
  border-radius: var(--radius-img);
  overflow: hidden;
  box-shadow: var(--glow-primary);
  background: var(--bg-deep);
}
.features-visual img {
  width: 100%;
  object-fit: cover;
  aspect-ratio: 4/3;
  transition: transform .5s ease;
}
.features-visual:hover img { transform: scale(1.03); }
.features-visual .visual-tag {
  position: absolute;
  bottom: 20px;
  left: 20px;
  background: rgba(11,14,20,0.85);
  border: 1px solid rgba(255,92,42,0.4);
  color: var(--text-main);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  backdrop-filter: blur(6px);
}

/* ===== 流程 ===== */
.process-section { background: var(--bg-alt); }
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.step-card {
  position: relative;
  background: var(--bg-deep);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 34px 24px 26px;
  transition: all .25s ease;
}
.step-card:hover {
  transform: translateY(-4px);
  border-color: rgba(201,80,255,0.4);
  box-shadow: 0 0 0 1px rgba(201,80,255,0.2), 0 8px 40px rgba(0,0,0,0.5);
}
.step-num {
  font-size: 14px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.step-card h3 { font-size: 16px; font-weight: 700; margin: 14px 0 8px; }
.step-card p { font-size: 13px; color: var(--text-secondary); line-height: 1.7; }
.step-arrow {
  position: absolute;
  top: 50%;
  right: -20px;
  color: var(--primary);
  font-size: 20px;
  transform: translateY(-50%);
  z-index: 2;
  text-shadow: 0 0 10px rgba(255,92,42,0.5);
}

/* ===== 常见场景 ===== */
.scenario-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.scenario-card {
  display: flex;
  gap: 18px;
  background: var(--bg-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 28px 26px;
  transition: all .25s ease;
}
.scenario-card:hover {
  border-color: rgba(61,240,255,0.35);
  box-shadow: 0 0 0 1px rgba(61,240,255,0.15), 0 8px 40px rgba(0,0,0,0.5);
  transform: translateY(-3px);
}
.scenario-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,92,42,0.1);
  border: 1px solid rgba(255,92,42,0.25);
  border-radius: 12px;
  color: var(--primary);
  font-size: 19px;
}
.scenario-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.scenario-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* ===== 登录环境 ===== */
.env-section { background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg-base) 100%); }
.env-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.env-content h2 { font-size: 1.75rem; font-weight: 900; margin-bottom: 16px; line-height: 1.3; }
.env-content > p { font-size: 15px; color: var(--text-secondary); line-height: 1.75; margin-bottom: 24px; }
.env-list { display: flex; flex-direction: column; gap: 14px; }
.env-list li {
  padding-left: 30px;
  position: relative;
  font-size: 14px;
  color: var(--text-main);
  line-height: 1.7;
}
.env-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--primary);
  font-weight: 900;
  font-size: 16px;
}
.env-visual .img-wrap {
  border-radius: var(--radius-img);
  overflow: hidden;
  box-shadow: 0 0 0 1px rgba(201,80,255,0.2), 0 8px 44px rgba(0,0,0,0.55);
  background: var(--bg-deep);
}
.env-visual img {
  width: 100%;
  object-fit: cover;
  aspect-ratio: 16/11;
  transition: transform .5s ease;
}
.env-visual:hover img { transform: scale(1.03); }

/* ===== FAQ ===== */
.faq-section { background: var(--bg-base); }
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item {
  background: var(--bg-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.faq-item.active {
  border-color: rgba(255,92,42,0.3);
  box-shadow: 0 0 0 1px rgba(255,92,42,0.12), 0 8px 36px rgba(0,0,0,0.4);
}
.faq-question {
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  text-align: left;
  padding: 22px 26px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  transition: color .2s;
}
.faq-question:hover { color: var(--primary); }
.faq-question::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(201,80,255,0.7);
  flex-shrink: 0;
  transition: background .2s;
}
.faq-item.active .faq-question::before { background: var(--primary); box-shadow: 0 0 10px rgba(255,92,42,0.7); }
.faq-question::after {
  content: '+';
  margin-left: auto;
  font-size: 22px;
  font-weight: 400;
  color: var(--text-muted);
  transition: transform .3s ease, color .3s ease;
  line-height: 1;
}
.faq-item.active .faq-question::after {
  transform: rotate(45deg);
  color: var(--primary);
}
.faq-answer {
  display: none;
  padding: 0 26px 22px 50px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
  border-top: 1px solid rgba(255,255,255,0.05);
  padding-top: 14px;
}
.faq-item.active .faq-answer { display: block; }

/* ===== CTA ===== */
.cta-section { padding-top: 40px; }
.cta-box {
  text-align: center;
  padding: 68px 48px;
  background: linear-gradient(135deg, rgba(255,92,42,0.14), rgba(201,80,255,0.1)), var(--bg-alt);
  border: 1px solid rgba(255,92,42,0.25);
  border-radius: 22px;
  box-shadow: var(--glow-primary);
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--primary), transparent);
}
.cta-box h2 { font-size: clamp(1.5rem, 2.4vw, 2rem); font-weight: 900; margin-bottom: 14px; }
.cta-box p { color: var(--text-secondary); margin-bottom: 32px; font-size: 15px; }

/* ===== 页脚 ===== */
.site-footer {
  background: #080B10;
  border-top: 1px solid var(--border-color);
  padding: 64px 0 0;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-logo {
  font-size: 1.3rem;
  font-weight: 900;
  margin-bottom: 14px;
  color: var(--text-main);
}
.footer-logo .logo-accent { color: var(--primary); }
.footer-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 340px;
}
.footer-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-main);
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color .2s;
}
.footer-links a:hover { color: var(--primary); }
.footer-info {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.9;
}
.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding: 20px 0;
  text-align: center;
  font-size: 14px;
  color: var(--text-muted);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .process-steps { grid-template-columns: 1fr 1fr; gap: 20px; }
  .features-grid { grid-template-columns: 1fr; gap: 44px; }
  .env-grid { grid-template-columns: 1fr; gap: 44px; }
  .section { padding: 68px 0; }
}

@media (max-width: 768px) {
  .desktop-nav { display: none; }
  .menu-toggle { display: block; }
  .mobile-menu {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(10,12,18,0.97);
    backdrop-filter: blur(18px);
    padding: 16px 24px 24px;
    flex-direction: column;
    gap: 4px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
  }
  .mobile-menu.open { display: flex; }
  .mobile-menu .nav-link { padding: 12px 0; font-size: 15px; }
  .mobile-menu .btn-primary { margin-top: 14px; justify-content: center; }
  .scenario-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .page-hero { padding: 80px 0 64px; }
  .step-arrow { display: none; }
  .header-inner.gap-4 { gap: 12px; }
}

@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .process-steps { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn-primary,
  .hero-actions .btn-outline { justify-content: center; }
  .cta-box { padding: 44px 22px; }
  .feature-item { flex-direction: column; gap: 12px; }
  .scenario-card { flex-direction: column; }
  .section { padding: 56px 0; }
  .page-hero p { font-size: 15px; }
}