/* roulang page: index */
:root {
  --bg-deep: #050814;
  --bg-base: #0A1128;
  --bg-elev: #101A3A;
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.14);
  --primary: #2E6BFF;
  --primary-strong: #4C8CFF;
  --accent: #00D9A6;
  --warning: #FFB020;
  --text-main: #EAF0FF;
  --text-sub: #92A1C8;
  --text-dim: #5D6B94;
  --radius-card: 16px;
  --radius-btn: 12px;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
  --shadow-cta: 0 0 24px rgba(46, 107, 255, 0.45);
  --shadow-accent: 0 0 16px rgba(0, 217, 166, 0.35);
  --transition: 0.2s ease;
  --header-h: 112px;
}

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

html {
  scroll-behavior: smooth;
}

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

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

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  line-height: 1.3;
  color: var(--text-main);
}

p {
  color: var(--text-sub);
}

::selection {
  background: rgba(46, 107, 255, 0.45);
  color: #fff;
}

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

.section-title {
  font-size: 30px;
  font-weight: 700;
  color: var(--text-main);
  position: relative;
  padding-left: 20px;
  margin-bottom: 48px;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  box-shadow: 0 0 12px rgba(46, 107, 255, 0.6);
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, #2E6BFF, #00D9A6);
  color: #fff;
  box-shadow: var(--shadow-cta);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 32px rgba(46, 107, 255, 0.65);
}

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

.btn-ghost {
  background: rgba(255, 255, 255, 0.07);
  color: var(--text-main);
  border: 1px solid var(--glass-border);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.28);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 16px 40px;
  font-size: 15px;
}

.btn-sm {
  padding: 10px 22px;
  font-size: 13px;
}

.btn-block {
  width: 100%;
}

.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--accent), 0 0 24px rgba(46, 107, 255, 0.5);
}

/* ========== Header ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(5, 8, 20, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.site-header.header-scrolled {
  background: rgba(5, 8, 20, 0.94);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(46, 107, 255, 0.25);
}

.header-top {
  height: 64px;
  display: flex;
  align-items: center;
}

.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, #2E6BFF, #00D9A6);
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 16px rgba(46, 107, 255, 0.45);
}

.brand-name {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: 1px;
  white-space: nowrap;
}

.header-search {
  flex: 0 1 320px;
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  padding: 5px 5px 5px 16px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.header-search:focus-within {
  border-color: rgba(46, 107, 255, 0.55);
  box-shadow: 0 0 0 3px rgba(46, 107, 255, 0.2);
}

.header-search input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-main);
  font-size: 14px;
  min-width: 0;
}

.header-search input::placeholder {
  color: var(--text-dim);
}

.header-search button {
  background: linear-gradient(135deg, #2E6BFF, #00D9A6);
  color: #fff;
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 12px;
  transition: transform 0.2s;
}

.header-search button:hover {
  transform: scale(1.06);
}

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

.header-nav {
  height: 48px;
  display: flex;
  align-items: center;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.nav-pills {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  width: 100%;
}

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

.nav-pill {
  display: inline-flex;
  align-items: center;
  padding: 8px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-sub);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  text-decoration: none;
  white-space: nowrap;
  transition: all var(--transition);
}

.nav-pill:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.22);
}

.nav-pill.active {
  background: linear-gradient(135deg, #2E6BFF, #00D9A6);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 0 20px rgba(46, 107, 255, 0.4);
  font-weight: 600;
}

/* ========== Countdown Bar ========== */
.countdown-bar {
  background: rgba(46, 107, 255, 0.15);
  border-bottom: 1px solid rgba(46, 107, 255, 0.25);
  padding: 12px 0;
}

.countdown-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  flex-wrap: wrap;
}

.countdown-left {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-main);
}

.live-dot {
  width: 8px;
  height: 8px;
  background: var(--warning);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(255, 176, 32, 0.2);
  animation: dotPulse 2s infinite;
  flex-shrink: 0;
}

@keyframes dotPulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(255, 176, 32, 0.25); }
  50% { box-shadow: 0 0 0 6px rgba(255, 176, 32, 0.1); }
}

.countdown-right {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-sub);
}

.countdown-timer {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: "JetBrains Mono", "SF Mono", ui-monospace, monospace;
  font-size: 16px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
}

.cd-num {
  animation: breathe 2.5s ease-in-out infinite;
}

@keyframes breathe {
  0%, 100% { text-shadow: 0 0 6px rgba(0, 217, 166, 0.4); }
  50% { text-shadow: 0 0 16px rgba(0, 217, 166, 0.7); }
}

/* ========== Hero ========== */
.hero {
  position: relative;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  padding: 140px 0 120px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(5, 8, 20, 0.82), rgba(10, 17, 40, 0.9));
}

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

.hero h1 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
  color: var(--text-main);
}

.hero h1 .highlight {
  background: linear-gradient(135deg, #2E6BFF, #00D9A6);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero-sub {
  font-size: 18px;
  color: var(--text-sub);
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.hero-trust {
  display: flex;
  align-items: center;
  gap: 20px;
  color: var(--text-sub);
  font-size: 14px;
  flex-wrap: wrap;
}

.trust-item strong {
  color: var(--accent);
  font-size: 24px;
  font-weight: 800;
  margin-right: 4px;
}

.trust-divider {
  color: var(--text-dim);
}

/* ========== Features ========== */
.section-features {
  padding: 100px 0;
  background: var(--bg-base);
}

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

.feature-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.feature-offset {
  transform: translateY(20px);
}

.feature-card:hover,
.feature-card.feature-offset:hover {
  transform: translateY(-4px);
  border-color: rgba(46, 107, 255, 0.45);
  box-shadow: var(--shadow-card), 0 0 24px rgba(46, 107, 255, 0.15);
}

.feature-offset:hover {
  transform: translateY(16px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  background: linear-gradient(135deg, rgba(46, 107, 255, 0.3), rgba(0, 217, 166, 0.3));
  color: var(--accent);
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
}

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

/* ========== Gallery ========== */
.section-gallery {
  padding: 100px 0;
  background: var(--bg-deep);
}

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

.gallery-card {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  height: 240px;
  display: block;
  background: var(--bg-elev);
  border: 1px solid var(--glass-border);
}

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

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

.gallery-overlay {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 20px 24px;
  background: linear-gradient(180deg, transparent, rgba(5, 8, 20, 0.95));
}

.gallery-overlay h3 {
  font-size: 18px;
  margin-bottom: 4px;
  color: #fff;
}

.gallery-overlay p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.8);
}

.gallery-link-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 100%;
  background: linear-gradient(135deg, rgba(46, 107, 255, 0.18), rgba(0, 217, 166, 0.1));
  border: 1px dashed rgba(46, 107, 255, 0.45);
  color: var(--text-main);
  font-size: 18px;
  font-weight: 600;
  transition: all var(--transition);
  text-decoration: none;
}

.gallery-link-card:hover {
  background: linear-gradient(135deg, rgba(46, 107, 255, 0.3), rgba(0, 217, 166, 0.22));
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 0 24px rgba(0, 217, 166, 0.2);
}

.gallery-link-card i {
  font-size: 28px;
  margin-bottom: 12px;
}

.gallery-link-card span {
  font-size: 15px;
}

.gallery-more {
  text-align: center;
  margin-top: 36px;
}

.gallery-more a {
  color: var(--text-sub);
  font-size: 14px;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.3);
  padding-bottom: 2px;
  transition: color 0.2s, border-color 0.2s;
}

.gallery-more a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ========== CTA ========== */
.section-cta {
  padding: 100px 0;
  background: var(--bg-base);
}

.cta-card {
  position: relative;
  max-width: 680px;
  margin: 0 auto;
  background: linear-gradient(135deg, #101A3A, #0A1128) padding-box,
    linear-gradient(135deg, #2E6BFF, #00D9A6) border-box;
  border: 2px solid transparent;
  border-radius: 20px;
  padding: 48px;
  text-align: center;
  box-shadow: var(--shadow-card);
}

.time-badge {
  position: absolute;
  top: -12px;
  right: 24px;
  background: linear-gradient(135deg, #FFB020, #FF8A00);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 999px;
  box-shadow: 0 4px 12px rgba(255, 176, 32, 0.3);
}

.cta-card h2 {
  font-size: 28px;
  margin-bottom: 12px;
}

.cta-card > p {
  color: var(--text-sub);
  margin-bottom: 32px;
  font-size: 15px;
}

.signup-form {
  display: grid;
  gap: 16px;
}

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

.code-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
}

.signup-form input {
  width: 100%;
  padding: 14px 16px;
  background: rgba(5, 8, 20, 0.55);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-btn);
  color: var(--text-main);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.signup-form input::placeholder {
  color: var(--text-dim);
}

.signup-form input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 217, 166, 0.2);
}

.btn-code {
  padding: 14px 20px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-btn);
  font-size: 14px;
  white-space: nowrap;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}

.btn-code:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.3);
}

/* ========== FAQ ========== */
.section-faq {
  padding: 100px 0;
  background: var(--bg-deep);
}

.faq-list {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: border-color 0.2s;
}

.faq-item.active {
  border-color: rgba(46, 107, 255, 0.45);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  user-select: none;
}

.faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--text-sub);
  transition: all 0.25s;
}

.faq-item.active .faq-icon {
  background: rgba(46, 107, 255, 0.35);
  color: var(--primary-strong);
  transform: rotate(45deg);
  box-shadow: 0 0 12px rgba(46, 107, 255, 0.3);
}

.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease, padding 0.25s ease;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-sub);
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 24px 20px;
}

/* ========== News ========== */
.section-news {
  padding: 100px 0;
  background: var(--bg-base);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 48px;
}

.section-head .section-title {
  margin-bottom: 0;
}

.section-more {
  color: var(--text-sub);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s;
}

.section-more:hover {
  color: var(--accent);
}

.news-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.news-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.news-card:hover {
  transform: translateY(-3px);
  border-color: rgba(46, 107, 255, 0.45);
  box-shadow: var(--shadow-card);
}

.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.category-pill {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(46, 107, 255, 0.2);
  color: var(--primary-strong);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 1px;
}

.news-meta time {
  font-size: 13px;
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
}

.news-title {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
}

.news-title a {
  color: var(--text-main);
  transition: color 0.2s;
}

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

.news-excerpt {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-sub);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-more {
  margin-top: auto;
  font-size: 14px;
  color: var(--primary-strong);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s, color 0.2s;
}

.news-more:hover {
  gap: 10px;
  color: var(--accent);
}

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 24px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px dashed rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-card);
  color: var(--text-dim);
  font-size: 14px;
}

.empty-state a {
  color: var(--primary-strong);
}

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

/* ========== Footer ========== */
.site-footer {
  background: #04060F;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 4fr 2fr 2fr 4fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand .footer-logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-brand .footer-logo .brand-mark {
  width: 30px;
  height: 30px;
  font-size: 15px;
}

.footer-brand p {
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.7;
  margin-top: 14px;
}

.footer-links h4,
.footer-resources h4,
.footer-contact h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 16px;
}

.footer-links a,
.footer-resources a {
  display: block;
  color: var(--text-sub);
  font-size: 14px;
  padding: 6px 0;
  transition: color 0.2s, padding-left 0.2s;
}

.footer-links a:hover,
.footer-resources a:hover {
  color: var(--accent);
  padding-left: 6px;
}

.footer-contact p {
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.8;
  margin: 0;
}

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

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .feature-offset {
    transform: none;
  }
  .feature-offset:hover {
    transform: translateY(-4px);
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
  .hero {
    padding: 100px 0 80px;
  }
}

@media (max-width: 768px) {
  body {
    padding-top: 112px;
  }
  .header-search {
    display: none;
  }
  .hero {
    padding: 72px 0 56px;
  }
  .hero h1 {
    font-size: 30px;
  }
  .hero-sub {
    font-size: 16px;
  }
  .hero-trust {
    gap: 14px;
  }
  .trust-item strong {
    font-size: 20px;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .gallery-grid {
    grid-template-columns: 1fr;
  }
  .news-list {
    grid-template-columns: 1fr;
  }
  .section-features,
  .section-gallery,
  .section-cta,
  .section-faq,
  .section-news {
    padding: 64px 0;
  }
  .section-title {
    font-size: 24px;
  }
  .cta-card {
    padding: 36px 24px;
  }
  .cta-card h2 {
    font-size: 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px 24px;
  }
}

@media (max-width: 520px) {
  .header-top-inner {
    gap: 12px;
  }
  .brand-name {
    font-size: 18px;
  }
  .btn-sm {
    padding: 9px 16px;
    font-size: 12px;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .countdown-timer {
    font-size: 14px;
  }
  .cd-sec,
  .cd-sep-sec {
    display: none;
  }
  .form-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .code-row {
    grid-template-columns: 1fr;
  }
  .btn-code {
    width: 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .cta-card {
    padding: 32px 18px;
  }
  .faq-question {
    font-size: 15px;
    padding: 18px 20px;
  }
  .faq-answer {
    font-size: 13px;
  }
  .faq-item.active .faq-answer {
    padding: 0 20px 18px;
  }
  .nav-pill {
    padding: 7px 16px;
  }
}

/* roulang page: category1 */
:root {
    --bg-deep: #050814;
    --bg-base: #0A1128;
    --bg-elev: #101A3A;
    --glass-bg: rgba(255, 255, 255, 0.06);
    --glass-border: rgba(255, 255, 255, 0.14);
    --primary: #2E6BFF;
    --primary-strong: #4C8CFF;
    --accent: #00D9A6;
    --warning: #FFB020;
    --text-main: #EAF0FF;
    --text-sub: #92A1C8;
    --text-dim: #5D6B94;
    --radius-card: 16px;
    --radius-btn: 12px;
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
    --shadow-primary: 0 0 24px rgba(46, 107, 255, 0.45);
    --shadow-accent: 0 0 16px rgba(0, 217, 166, 0.35);
    --transition: 0.2s ease;
    --container-max: 1200px;
}
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: "PingFang SC", "HarmonyOS Sans", "Microsoft YaHei", system-ui, sans-serif;
    background: var(--bg-base);
    color: var(--text-main);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}
img {
    max-width: 100%;
    display: block;
}
a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition);
}
button,
input {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
    background: none;
}
ul,
ol {
    list-style: none;
}
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
}
.section {
    padding: 88px 0;
    position: relative;
}
.section-head {
    text-align: center;
    margin-bottom: 48px;
}
.section-head h2 {
    font-size: 30px;
    font-weight: 700;
    letter-spacing: -0.5px;
    line-height: 1.3;
    margin-top: 12px;
}
.section-head p {
    color: var(--text-sub);
    margin-top: 10px;
    font-size: 15px;
}
.section-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--accent);
    background: rgba(0, 217, 166, 0.1);
    border: 1px solid rgba(0, 217, 166, 0.25);
    padding: 6px 16px;
    border-radius: 999px;
}
.text-gradient {
    background: linear-gradient(135deg, var(--primary-strong), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius-btn);
    font-size: 15px;
    font-weight: 600;
    line-height: 1;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
    border: 1px solid transparent;
}
.btn i {
    font-size: 14px;
}
.btn-primary {
    background: linear-gradient(135deg, #2E6BFF, #00D9A6);
    color: #fff;
    box-shadow: var(--shadow-primary);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 32px rgba(46, 107, 255, 0.6);
}
.btn-primary:active {
    transform: scale(0.98);
}
.btn-ghost {
    background: var(--glass-bg);
    border-color: var(--glass-border);
    color: var(--text-main);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.12);
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}
.btn-sm {
    padding: 10px 20px;
    font-size: 14px;
}
.btn-lg {
    padding: 18px 40px;
    font-size: 16px;
}
.btn:focus-visible,
a:focus-visible,
input:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}
.link-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--accent);
    font-weight: 600;
    font-size: 14px;
    margin-top: 20px;
}
.link-more:hover {
    color: var(--primary-strong);
}
.link-more i {
    transition: transform var(--transition);
}
.link-more:hover i {
    transform: translateX(4px);
}

/* Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(5, 8, 20, 0.72);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transition: background 0.3s ease, box-shadow 0.3s ease;
}
.site-header.scrolled {
    background: rgba(5, 8, 20, 0.92);
    box-shadow: 0 1px 0 rgba(46, 107, 255, 0.3);
}
.header-top {
    height: 64px;
}
.header-top-inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}
.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.brand-mark {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    font-size: 18px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 14px rgba(46, 107, 255, 0.5);
}
.brand-name {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--text-main);
}
.header-search {
    display: flex;
    align-items: center;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 999px;
    padding: 0 6px 0 16px;
    height: 38px;
    width: 280px;
    transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}
.header-search:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(0, 217, 166, 0.2);
    background: rgba(255, 255, 255, 0.1);
}
.header-search input {
    flex: 1;
    color: var(--text-main);
    font-size: 14px;
    background: transparent;
}
.header-search input::placeholder {
    color: var(--text-dim);
}
.header-search button {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-sub);
    cursor: pointer;
    transition: color var(--transition), background var(--transition);
}
.header-search button:hover {
    color: var(--accent);
    background: rgba(255, 255, 255, 0.1);
}
.header-cta {
    flex-shrink: 0;
}
.header-nav {
    height: 48px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.nav-pills {
    height: 100%;
    display: flex;
    align-items: center;
    gap: 10px;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}
.nav-pills::-webkit-scrollbar {
    display: none;
}
.nav-pill {
    flex-shrink: 0;
    padding: 8px 20px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-sub);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    transition: background var(--transition), color var(--transition), box-shadow var(--transition), border-color var(--transition);
    white-space: nowrap;
}
.nav-pill:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.25);
}
.nav-pill.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-strong));
    color: #fff;
    border-color: transparent;
    box-shadow: 0 0 18px rgba(46, 107, 255, 0.45);
}

/* Breadcrumb + Page Hero */
.page-hero {
    position: relative;
    padding: 148px 0 88px;
    overflow: hidden;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.5;
    z-index: 0;
}
.hero-bg::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(5, 8, 20, 0.82) 0%, rgba(10, 17, 40, 0.94) 100%);
}
.page-hero-inner {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 760px;
}
.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-dim);
    margin-bottom: 28px;
}
.breadcrumb a {
    color: var(--text-sub);
}
.breadcrumb a:hover {
    color: var(--accent);
}
.breadcrumb span {
    color: var(--text-dim);
}
.hero-badge {
    display: inline-block;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 1px;
    color: var(--accent);
    background: rgba(0, 217, 166, 0.08);
    border: 1px solid rgba(0, 217, 166, 0.3);
    padding: 6px 18px;
    border-radius: 999px;
    margin-bottom: 20px;
}
.page-hero-title {
    font-size: 44px;
    font-weight: 800;
    letter-spacing: -0.5px;
    line-height: 1.25;
    margin-bottom: 16px;
}
.page-hero-sub {
    font-size: 17px;
    color: var(--text-sub);
    margin-bottom: 32px;
}
.hero-actions {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 28px;
    flex-wrap: wrap;
    font-size: 13px;
    color: var(--text-dim);
}
.hero-stats strong {
    display: block;
    font-size: 22px;
    font-weight: 700;
    color: var(--accent);
    line-height: 1.4;
}

/* Intro section */
.intro-section {
    background: var(--bg-base);
}
.intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
}
.intro-copy h2 {
    font-size: 30px;
    font-weight: 700;
    letter-spacing: -0.5px;
    line-height: 1.3;
    margin: 14px 0 18px;
}
.intro-copy p {
    color: var(--text-sub);
    margin-bottom: 14px;
    font-size: 15px;
}
.intro-list {
    background: linear-gradient(135deg, rgba(16, 26, 58, 0.8), rgba(10, 17, 40, 0.6));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-card);
    padding: 32px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}
.intro-list h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.intro-list h3::after {
    content: "";
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--glass-border), transparent);
}
.benefit-links li + li {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.benefit-links a {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 8px;
    color: var(--text-sub);
    border-radius: 10px;
    transition: background var(--transition), color var(--transition), padding-left var(--transition);
}
.benefit-links a:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    padding-left: 14px;
}
.benefit-links .benefit-icon {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: rgba(46, 107, 255, 0.15);
    color: var(--primary-strong);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}
.benefit-links .arrow {
    margin-left: auto;
    color: var(--text-dim);
    font-size: 12px;
}

/* Benefits cards */
.benefits-section {
    background: var(--bg-deep);
}
.benefits-section .section-head h2,
.benefits-section .section-head p {
    position: relative;
    z-index: 1;
}
.benefit-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.benefit-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-card);
    overflow: hidden;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.benefit-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card);
    border-color: rgba(46, 107, 255, 0.45);
}
.benefit-img {
    position: relative;
    height: 160px;
    overflow: hidden;
}
.benefit-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.35s ease;
}
.benefit-card:hover .benefit-img img {
    transform: scale(1.05);
}
.img-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 30%, rgba(10, 17, 40, 0.88) 100%);
}
.benefit-content {
    padding: 20px 22px 24px;
    position: relative;
}
.benefit-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    position: absolute;
    top: -20px;
    right: 22px;
    box-shadow: 0 4px 16px rgba(46, 107, 255, 0.4);
}
.benefit-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}
.benefit-content p {
    font-size: 14px;
    color: var(--text-sub);
    margin-bottom: 16px;
    line-height: 1.7;
}
.benefit-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 500;
    color: var(--accent);
    background: rgba(0, 217, 166, 0.1);
    border: 1px solid rgba(0, 217, 166, 0.22);
    padding: 4px 14px;
    border-radius: 999px;
}

/* Scenes */
.scenes-section {
    background: var(--bg-base);
}
.scenes-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.scene-card {
    background: linear-gradient(160deg, rgba(16, 26, 58, 0.7), rgba(10, 17, 40, 0.85));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-card);
    padding: 28px;
    position: relative;
    transition: border-color var(--transition), transform var(--transition);
}
.scene-card:hover {
    border-color: rgba(0, 217, 166, 0.4);
    transform: translateY(-4px);
}
.scene-num {
    font-size: 34px;
    font-weight: 800;
    color: rgba(46, 107, 255, 0.5);
    line-height: 1;
    display: block;
    margin-bottom: 14px;
}
.scene-card h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 10px;
}
.scene-card p {
    font-size: 14px;
    color: var(--text-sub);
    line-height: 1.7;
}
.scene-icon {
    position: absolute;
    top: 28px;
    right: 24px;
    font-size: 22px;
    color: var(--text-dim);
    transition: color var(--transition);
}
.scene-card:hover .scene-icon {
    color: var(--accent);
}

/* Process */
.process-section {
    background: var(--bg-deep);
}
.process-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    counter-reset: step;
}
.process-step {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-card);
    padding: 36px 30px;
    text-align: center;
    position: relative;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: transform var(--transition), box-shadow var(--transition);
}
.process-step:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card);
}
.step-num {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 18px;
    box-shadow: 0 0 20px rgba(46, 107, 255, 0.4);
}
.process-step h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
}
.process-step p {
    font-size: 14px;
    color: var(--text-sub);
    line-height: 1.7;
}
.process-gap {
    display: none;
}

/* FAQ */
.faq-section {
    background: var(--bg-base);
}
.faq-list {
    max-width: 820px;
    margin: 0 auto;
}
.faq-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-card);
    margin-bottom: 14px;
    overflow: hidden;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.faq-item.open {
    border-color: rgba(46, 107, 255, 0.45);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
}
.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    cursor: pointer;
    text-align: left;
    color: var(--text-main);
    font-size: 16px;
    font-weight: 600;
    line-height: 1.4;
    transition: background var(--transition);
}
.faq-question:hover {
    background: rgba(255, 255, 255, 0.04);
}
.faq-icon {
    font-size: 14px;
    color: var(--accent);
    flex-shrink: 0;
    transition: transform 0.25s ease;
}
.faq-item.open .faq-icon {
    transform: rotate(45deg);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.35s ease;
    padding: 0 24px;
}
.faq-item.open .faq-answer {
    max-height: 300px;
    padding: 0 24px 20px;
}
.faq-answer p {
    color: var(--text-sub);
    font-size: 15px;
    line-height: 1.75;
}

/* CTA */
.cta-section {
    background: var(--bg-deep);
    padding: 70px 0;
}
.cta-card {
    max-width: 880px;
    margin: 0 auto;
    background: linear-gradient(135deg, rgba(16, 26, 58, 0.9), rgba(10, 17, 40, 0.8));
    border: 2px solid transparent;
    background-clip: padding-box;
    position: relative;
    padding: 56px 48px;
    text-align: center;
    border-radius: 20px;
}
.cta-card::before {
    content: "";
    position: absolute;
    inset: -2px;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    z-index: -1;
    opacity: 0.45;
}
.cta-corner {
    position: absolute;
    top: 16px;
    right: 16px;
    font-size: 12px;
    font-weight: 600;
    color: var(--warning);
    background: rgba(255, 176, 32, 0.12);
    border: 1px solid rgba(255, 176, 32, 0.35);
    padding: 4px 12px;
    border-radius: 999px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.cta-card h2 {
    font-size: 30px;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 12px;
}
.cta-card p {
    color: var(--text-sub);
    margin-bottom: 32px;
    font-size: 16px;
}
.cta-actions {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
}

/* Footer */
.site-footer {
    background: #04060F;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 56px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 4fr 2fr 2fr 4fr;
    gap: 40px;
    padding-bottom: 40px;
}
.footer-brand .footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 16px;
}
.footer-brand p {
    font-size: 14px;
    color: var(--text-dim);
    line-height: 1.7;
    max-width: 280px;
}
.footer-links h4,
.footer-resources h4,
.footer-contact h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 16px;
}
.footer-links a,
.footer-resources a {
    display: block;
    color: var(--text-dim);
    font-size: 14px;
    padding: 5px 0;
    transition: color var(--transition), padding-left var(--transition);
}
.footer-links a:hover,
.footer-resources a:hover {
    color: var(--accent);
    padding-left: 4px;
}
.footer-contact p {
    font-size: 14px;
    color: var(--text-dim);
    padding: 5px 0;
    display: flex;
    align-items: center;
    gap: 8px;
}
.footer-contact p i {
    color: var(--primary-strong);
    font-size: 13px;
    width: 16px;
}
.footer-copyright {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 22px 0;
    text-align: center;
}
.footer-copyright p {
    font-size: 13px;
    color: var(--text-dim);
}

/* Tablet */
@media (max-width: 1024px) {
    .header-search {
        width: 200px;
    }
    .benefit-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .scenes-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
    .intro-grid {
        gap: 32px;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .section {
        padding: 64px 0;
    }
    .section-head h2 {
        font-size: 24px;
    }
    .page-hero {
        padding: 132px 0 64px;
    }
    .page-hero-title {
        font-size: 30px;
    }
    .page-hero-sub {
        font-size: 15px;
    }
    .intro-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .process-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }
    .cta-card {
        padding: 40px 22px;
    }
    .cta-card h2 {
        font-size: 24px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
}

@media (max-width: 520px) {
    .container {
        padding-left: 16px;
        padding-right: 16px;
    }
    .header-search {
        display: none;
    }
    .header-cta {
        padding: 8px 14px;
        font-size: 13px;
    }
    .brand-name {
        font-size: 18px;
    }
    .nav-pill {
        padding: 7px 16px;
        font-size: 13px;
    }
    .page-hero-title {
        font-size: 27px;
    }
    .benefit-grid {
        grid-template-columns: 1fr;
    }
    .scenes-grid {
        grid-template-columns: 1fr;
    }
    .hero-stats {
        gap: 16px;
        font-size: 12px;
    }
    .hero-stats strong {
        font-size: 18px;
    }
    .cta-actions {
        flex-direction: column;
        width: 100%;
    }
    .cta-actions .btn {
        width: 100%;
    }
}

/* roulang page: category2 */
:root {
  --bg-deep: #050814;
  --bg-base: #0A1128;
  --bg-elev: #101A3A;
  --glass-bg: rgba(255,255,255,0.06);
  --glass-border: rgba(255,255,255,0.14);
  --primary: #2E6BFF;
  --primary-strong: #4C8CFF;
  --accent: #00D9A6;
  --warning: #FFB020;
  --text-main: #EAF0FF;
  --text-sub: #92A1C8;
  --text-dim: #5D6B94;
  --radius-card: 16px;
  --radius-ctl: 12px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.45);
  --shadow-cta: 0 0 24px rgba(46,107,255,0.45);
  --shadow-accent: 0 0 16px rgba(0,217,166,0.35);
  --font-stack: "PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-stack);
  background:var(--bg-deep);
  background-image:radial-gradient(ellipse 80% 50% at 20% -10%,rgba(46,107,255,0.15),transparent),radial-gradient(ellipse 60% 40% at 90% 20%,rgba(0,217,166,0.06),transparent);
  background-attachment:fixed;
  color:var(--text-main);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select{font-family:inherit;font-size:inherit}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:none;cursor:pointer;border-radius:var(--radius-ctl);
  padding:14px 32px;font-size:15px;font-weight:600;
  transition:all 0.2s ease;line-height:1.4;
}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;box-shadow:var(--shadow-cta);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 32px rgba(46,107,255,0.65)}
.btn-primary:active{transform:scale(0.98)}
.btn-ghost{
  background:rgba(255,255,255,0.06);
  border:1px solid rgba(255,255,255,0.2);
  color:var(--text-main);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.btn-ghost:hover{background:rgba(255,255,255,0.12);border-color:rgba(255,255,255,0.32)}
.btn-ghost:active{transform:scale(0.98)}
.btn-sm{padding:9px 20px;font-size:14px;border-radius:10px}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(5,8,20,0.8);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,0.08);
}
.site-header.scrolled{
  background:rgba(5,8,20,0.94);
  border-bottom-color:rgba(0,217,166,0.25);
}
.header-top{height:64px;display:flex;align-items:center}
.header-top-inner{display:flex;align-items:center;gap:20px;width:100%}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:800;color:#fff;
  box-shadow:0 0 14px rgba(46,107,255,0.4);
}
.brand-name{font-size:20px;font-weight:800;letter-spacing:1px;color:var(--text-main)}
.header-search{
  flex:1;max-width:340px;margin-left:auto;display:flex;
  background:var(--glass-bg);border:1px solid var(--glass-border);
  border-radius:10px;overflow:hidden;transition:border-color 0.2s ease;
}
.header-search:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(0,217,166,0.15)}
.header-search input{
  flex:1;background:transparent;border:none;outline:none;
  padding:9px 14px;color:var(--text-main);font-size:14px;min-width:0;
}
.header-search input::placeholder{color:var(--text-dim)}
.header-search button{
  background:transparent;border:none;color:var(--text-sub);
  padding:0 14px;cursor:pointer;transition:color 0.2s ease;
}
.header-search button:hover{color:var(--accent)}
.header-cta{margin-left:0;flex-shrink:0}
.header-nav{border-top:1px solid rgba(255,255,255,0.06)}
.nav-pills{
  display:flex;gap:10px;align-items:center;
  height:48px;overflow-x:auto;scrollbar-width:none;
}
.nav-pills::-webkit-scrollbar{display:none}
.nav-pill{
  display:inline-flex;align-items:center;white-space:nowrap;
  padding:7px 20px;border-radius:20px;
  font-size:14px;font-weight:500;color:var(--text-sub);
  border:1px solid rgba(255,255,255,0.1);
  background:transparent;transition:all 0.2s ease;
}
.nav-pill:hover{color:var(--text-main);background:rgba(255,255,255,0.08)}
.nav-pill.active{
  background:var(--primary);color:#fff;
  border-color:var(--primary);box-shadow:0 0 16px rgba(46,107,255,0.45);
}

/* ===== Hero ===== */
.category-hero{
  position:relative;padding:96px 0 88px;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.category-hero::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(5,8,20,0.88) 20%,rgba(10,17,40,0.75) 60%,rgba(5,8,20,0.55));
}
.category-hero::after{
  content:'';position:absolute;left:0;right:0;bottom:0;height:120px;
  background:linear-gradient(transparent,var(--bg-deep));
}
.hero-inner{position:relative;z-index:2}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 16px;border-radius:20px;
  background:rgba(0,217,166,0.12);border:1px solid rgba(0,217,166,0.3);
  color:var(--accent);font-size:13px;font-weight:600;margin-bottom:20px;
}
.hero-eyebrow .dot{
  width:6px;height:6px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 8px var(--accent);animation:pulse 2s infinite;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.5}}
.category-hero h1{
  font-size:46px;font-weight:800;line-height:1.25;letter-spacing:-0.5px;
  margin-bottom:18px;max-width:640px;
}
.category-hero h1 .grad{
  background:linear-gradient(135deg,var(--primary-strong),var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  font-size:17px;color:var(--text-sub);max-width:560px;margin-bottom:32px;
  line-height:1.8;
}
.hero-meta{
  display:flex;gap:24px;margin-top:36px;flex-wrap:wrap;
}
.hero-meta-item{display:flex;flex-direction:column;gap:2px}
.hero-meta-item .num{
  font-size:26px;font-weight:700;color:var(--text-main);
  font-variant-numeric:tabular-nums;
}
.hero-meta-item .num em{color:var(--accent);font-style:normal}
.hero-meta-item .label{font-size:13px;color:var(--text-dim)}

/* ===== Section ===== */
.section{padding:88px 0}
.section-alt{background:linear-gradient(180deg,rgba(10,17,40,0.4),rgba(5,8,20,0.2))}
.section-head{max-width:640px;margin-bottom:48px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-tag{
  display:inline-block;padding:5px 14px;border-radius:20px;
  background:rgba(46,107,255,0.12);border:1px solid rgba(46,107,255,0.25);
  color:var(--primary-strong);font-size:12px;font-weight:600;
  letter-spacing:1px;margin-bottom:14px;
}
.section-title{
  font-size:30px;font-weight:700;line-height:1.3;margin-bottom:14px;
  letter-spacing:-0.3px;
}
.section-text{color:var(--text-sub);font-size:15px}

/* ===== Feature Cards ===== */
.event-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:28px;
  align-items:start;
}
.event-card{
  background:var(--glass-bg);border:1px solid var(--glass-border);
  border-radius:var(--radius-card);padding:30px 28px;
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  transition:all 0.25s ease;
}
.event-card:hover{
  transform:translateY(-6px);
  border-color:rgba(46,107,255,0.4);
  box-shadow:var(--shadow-card);
}
.event-card.middle{margin-top:24px}
.event-card:last-child{margin-top:0}
.card-icon{
  width:52px;height:52px;border-radius:14px;
  background:linear-gradient(135deg,rgba(46,107,255,0.2),rgba(0,217,166,0.15));
  border:1px solid rgba(46,107,255,0.3);
  display:flex;align-items:center;justify-content:center;
  font-size:22px;color:var(--primary-strong);margin-bottom:20px;
}
.event-card h3{font-size:18px;font-weight:600;margin-bottom:10px}
.event-card p{font-size:14px;color:var(--text-sub);line-height:1.75}

/* ===== Flow Steps ===== */
.flow-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  counter-reset:flow;
}
.flow-step{
  position:relative;background:rgba(255,255,255,0.04);
  border:1px solid var(--glass-border);border-radius:var(--radius-card);
  padding:32px 24px 24px;transition:all 0.2s ease;
}
.flow-step:hover{background:rgba(255,255,255,0.07);border-color:rgba(46,107,255,0.3)}
.flow-step::before{
  counter-increment:flow;content:'0' counter(flow);
  position:absolute;top:18px;right:20px;
  font-size:32px;font-weight:800;color:rgba(46,107,255,0.2);
  font-variant-numeric:tabular-nums;
}
.flow-step h3{font-size:16px;font-weight:600;margin-bottom:8px;color:var(--text-main)}
.flow-step p{font-size:13px;color:var(--text-sub);line-height:1.7}

/* ===== Scenarios ===== */
.scenario-wrap{
  display:grid;grid-template-columns:1.2fr 0.8fr;gap:48px;align-items:center;
}
.scenario-cards{display:flex;flex-direction:column;gap:16px}
.scenario-item{
  display:flex;gap:16px;padding:18px 20px;
  background:var(--glass-bg);border:1px solid var(--glass-border);
  border-radius:14px;transition:all 0.2s ease;
}
.scenario-item:hover{border-color:rgba(0,217,166,0.35);background:rgba(255,255,255,0.08)}
.scenario-item i{
  color:var(--accent);font-size:20px;margin-top:2px;flex-shrink:0;
}
.scenario-item .stxt h4{font-size:15px;font-weight:600;margin-bottom:4px}
.scenario-item .stxt p{font-size:13px;color:var(--text-sub);line-height:1.7}
.scenario-image{
  border-radius:var(--radius-card);overflow:hidden;
  border:1px solid rgba(255,255,255,0.12);
  box-shadow:var(--shadow-card);
}
.scenario-image img{width:100%;height:100%;object-fit:cover;min-height:320px}
.scenario-image figcaption{
  padding:14px 18px;background:var(--bg-elev);
  font-size:13px;color:var(--text-sub);border-top:1px solid rgba(255,255,255,0.08);
}

/* ===== FAQ ===== */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{
  background:var(--glass-bg);border:1px solid var(--glass-border);
  border-radius:var(--radius-card);margin-bottom:14px;
  transition:all 0.2s ease;overflow:hidden;
}
.faq-item:hover{border-color:rgba(255,255,255,0.22)}
.faq-item.open{border-color:rgba(46,107,255,0.35)}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:center;
  gap:16px;padding:20px 24px;background:transparent;border:none;
  color:var(--text-main);font-size:16px;font-weight:600;cursor:pointer;
  text-align:left;transition:color 0.2s ease;
}
.faq-q:hover{color:var(--primary-strong)}
.faq-q:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}
.faq-q .icon{
  width:28px;height:28px;border-radius:50%;flex-shrink:0;
  background:rgba(46,107,255,0.15);border:1px solid rgba(46,107,255,0.3);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;color:var(--primary-strong);transition:transform 0.25s ease;
}
.faq-item.open .faq-q .icon{transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height 0.25s ease;
  color:var(--text-sub);font-size:14px;line-height:1.7;
}
.faq-item.open .faq-a{max-height:300px}
.faq-a p{padding:0 24px 22px}

/* ===== CTA ===== */
.cta-section{
  padding:88px 0;position:relative;
  background:linear-gradient(180deg,rgba(5,8,20,0),rgba(10,17,40,0.5),rgba(5,8,20,0));
}
.cta-card{
  position:relative;
  max-width:860px;margin:0 auto;
  background:var(--glass-bg);
  border:2px solid transparent;
  border-radius:20px;padding:48px 56px;
  text-align:center;
  background-image:linear-gradient(var(--bg-elev),var(--bg-elev)),linear-gradient(135deg,var(--primary),var(--accent));
  background-origin:border-box;
  background-clip:padding-box,border-box;
  box-shadow:var(--shadow-card);
}
.cta-badge{
  position:absolute;top:-14px;right:28px;
  background:var(--warning);color:#1a1400;
  font-size:12px;font-weight:700;padding:4px 14px;border-radius:12px;
  box-shadow:0 4px 12px rgba(255,176,32,0.3);
}
.cta-card h2{font-size:28px;font-weight:700;margin-bottom:12px}
.cta-card p{color:var(--text-sub);font-size:15px;margin-bottom:28px}
.cta-form{
  display:grid;grid-template-columns:1fr 1fr auto;gap:14px;max-width:620px;
  margin:0 auto 16px;text-align:left;
}
.cta-form input{
  background:rgba(255,255,255,0.06);border:1px solid var(--glass-border);
  border-radius:10px;padding:12px 16px;color:var(--text-main);
  outline:none;transition:all 0.2s ease;font-size:14px;
}
.cta-form input::placeholder{color:var(--text-dim)}
.cta-form input:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(0,217,166,0.12);
}
.cta-note{font-size:12px;color:var(--text-dim)}

/* ===== Footer ===== */
.site-footer{
  background:#04060F;border-top:1px solid rgba(255,255,255,0.08);
  padding:64px 0 0;margin-top:40px;
}
.footer-grid{
  display:grid;grid-template-columns:4fr 2fr 2fr 4fr;gap:40px;
  padding-bottom:48px;
}
.footer-logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;margin-bottom:14px}
.footer-brand p{font-size:13px;color:var(--text-dim);line-height:1.8;max-width:280px}
.footer-links h4,.footer-resources h4,.footer-contact h4{
  font-size:14px;font-weight:600;color:var(--text-main);margin-bottom:16px;
}
.footer-links a,.footer-resources a{
  display:block;font-size:13px;color:var(--text-sub);
  padding:5px 0;transition:all 0.2s ease;
}
.footer-links a:hover,.footer-resources a:hover{color:var(--accent);padding-left:4px}
.footer-contact p{font-size:13px;color:var(--text-sub);padding:5px 0}
.footer-copyright{
  border-top:1px solid rgba(255,255,255,0.06);
  padding:20px 0;text-align:center;
}
.footer-copyright p{font-size:13px;color:var(--text-dim)}

/* ===== Responsive ===== */
@media(max-width:1024px){
  .event-grid{grid-template-columns:repeat(2,1fr)}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .scenario-wrap{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:2fr 1fr 1fr;gap:32px}
  .footer-brand{grid-column:1/-1}
}
@media(max-width:768px){
  .section{padding:64px 0}
  .category-hero{padding:72px 0 64px}
  .category-hero h1{font-size:32px}
  .header-search{max-width:200px}
  .header-cta .btn-sm{padding:8px 14px;font-size:13px}
  .hero-meta{gap:16px}
  .cta-card{padding:40px 28px}
  .cta-form{grid-template-columns:1fr;gap:10px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:520px){
  .container{padding:0 16px}
  .header-search{display:none}
  .header-top-inner{justify-content:space-between}
  .brand-name{font-size:18px}
  .event-grid{grid-template-columns:1fr}
  .event-card.middle{margin-top:0}
  .flow-grid{grid-template-columns:1fr}
  .category-hero h1{font-size:28px}
  .hero-sub{font-size:15px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .scenario-image img{min-height:220px}
  .nav-pill{padding:6px 14px;font-size:13px}
  .section-title{font-size:24px}
}

/* roulang page: article */
:root {
  --bg-deep: #050814;
  --bg-base: #0A1128;
  --bg-elev: #101A3A;
  --glass-bg: rgba(255,255,255,0.06);
  --glass-border: rgba(255,255,255,0.14);
  --primary: #2E6BFF;
  --primary-strong: #4C8CFF;
  --accent: #00D9A6;
  --warning: #FFB020;
  --text-main: #EAF0FF;
  --text-sub: #92A1C8;
  --text-dim: #5D6B94;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.45);
  --shadow-cta: 0 0 24px rgba(46,107,255,0.45);
  --shadow-accent: 0 0 16px rgba(0,217,166,0.35);
  --font-main: "PingFang SC", "HarmonyOS Sans", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: linear-gradient(180deg, var(--bg-base) 0%, var(--bg-deep) 100%);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; }
::selection { background: rgba(0,217,166,0.25); color: #fff; }
.container { max-width: 1200px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }
main { padding-top: 112px; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 32px; border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 600; line-height: 1.2; cursor: pointer;
  border: none; transition: all 0.2s ease; white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, #2E6BFF, #00D9A6);
  color: #fff; box-shadow: var(--shadow-cta);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 36px rgba(46,107,255,0.65), 0 8px 20px rgba(0,0,0,0.3); }
.btn-primary:active { transform: scale(0.98); }
.btn-ghost {
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  color: var(--text-main); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.btn-ghost:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.28); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.btn-sm { padding: 9px 18px; font-size: 14px; border-radius: 10px; }

/* ===== 顶部双层导航 ===== */
.site-header {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  background: rgba(5,8,20,0.72);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
.site-header.is-scrolled {
  background: rgba(5,8,20,0.92);
  box-shadow: 0 1px 0 rgba(46,107,255,0.25), 0 8px 30px rgba(0,0,0,0.35);
}
.header-top { height: 64px; }
.header-top-inner { height: 64px; display: flex; align-items: center; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #2E6BFF, #00D9A6);
  color: #fff; font-weight: 800; font-size: 20px;
  box-shadow: 0 0 18px rgba(46,107,255,0.5);
}
.brand-name { font-size: 20px; font-weight: 700; letter-spacing: 0.5px; }
.header-search {
  display: flex; align-items: center; margin-left: auto;
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  border-radius: 12px; padding: 0 6px 0 16px;
  width: 300px; height: 42px; transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.header-search:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(0,217,166,0.18); }
.header-search input {
  flex: 1; background: transparent; border: none; outline: none;
  color: var(--text-main); font-size: 14px; min-width: 0;
}
.header-search input::placeholder { color: var(--text-dim); }
.header-search button {
  background: transparent; border: none; color: var(--text-sub);
  width: 36px; height: 36px; border-radius: 8px; cursor: pointer; transition: color 0.2s ease;
}
.header-search button:hover { color: var(--accent); }
.header-cta { white-space: nowrap; }
.header-nav { height: 48px; border-top: 1px solid rgba(255,255,255,0.05); }
.nav-pills {
  height: 48px; display: flex; align-items: center; gap: 12px;
  overflow-x: auto; scrollbar-width: none;
}
.nav-pills::-webkit-scrollbar { display: none; }
.nav-pill {
  padding: 8px 20px; border-radius: 999px;
  font-size: 14px; font-weight: 500; color: var(--text-sub);
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  white-space: nowrap; transition: all 0.2s ease;
  display: inline-flex; align-items: center; gap: 6px;
}
.nav-pill:hover { color: var(--text-main); background: rgba(255,255,255,0.12); border-color: rgba(76,140,255,0.6); }
.nav-pill.active {
  background: linear-gradient(135deg, #2E6BFF, #4C8CFF);
  color: #fff; border-color: transparent; box-shadow: 0 0 18px rgba(46,107,255,0.4);
}

/* ===== 文章顶部横幅 ===== */
.article-banner {
  position: relative;
  padding: 60px 0 52px;
  background-color: var(--bg-base);
  background-image: linear-gradient(180deg, rgba(5,8,20,0.8) 0%, rgba(10,17,40,0.94) 100%), url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.article-banner::after {
  content: ""; position: absolute; right: -120px; top: -120px;
  width: 420px; height: 420px; pointer-events: none;
  background: radial-gradient(circle, rgba(0,217,166,0.14), transparent 65%);
}
.article-banner .container { position: relative; z-index: 2; }
.breadcrumbs {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  font-size: 13px; color: var(--text-sub); margin-bottom: 24px;
}
.breadcrumbs a { color: var(--text-sub); transition: color 0.2s ease; }
.breadcrumbs a:hover { color: var(--accent); }
.crumb-sep { color: var(--text-dim); }
.crumb-current { color: var(--text-main); }
.article-category {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; border-radius: 999px;
  background: rgba(0,217,166,0.12); border: 1px solid rgba(0,217,166,0.35);
  color: var(--accent); font-size: 13px; font-weight: 600;
  letter-spacing: 0.5px; margin-bottom: 18px;
}
.article-title {
  font-size: 42px; font-weight: 800; line-height: 1.25;
  letter-spacing: -0.5px; max-width: 860px; margin-bottom: 18px;
}
.article-meta {
  display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
  font-size: 14px; color: var(--text-sub);
}
.meta-item { display: inline-flex; align-items: center; gap: 6px; }
.meta-item i { color: var(--accent); }

/* ===== 正文阅读区 ===== */
.article-section { padding: 56px 0 64px; }
.article-inner { max-width: 780px; margin: 0 auto; }
.article-body { font-size: 16px; line-height: 1.85; color: var(--text-sub); }
.article-body p { margin-bottom: 24px; }
.article-body strong { color: var(--text-main); }
.article-body h2 {
  margin: 44px 0 20px; padding: 16px 20px;
  font-size: 24px; font-weight: 700; color: var(--text-main);
  background: var(--glass-bg); border-radius: var(--radius-md);
  border-left: 3px solid var(--accent);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.04);
}
.article-body h3 { margin: 32px 0 14px; font-size: 20px; font-weight: 600; color: var(--text-main); }
.article-body img {
  width: 100%; height: auto; border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.1); margin: 28px 0;
}
.article-body figure { margin: 28px 0; }
.article-body figcaption { text-align: center; color: var(--text-dim); font-size: 13px; margin-top: 10px; }
.article-body blockquote {
  margin: 28px 0; padding: 18px 22px;
  border-left: 3px solid var(--primary);
  background: var(--glass-bg); border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--text-sub);
}
.article-body ul, .article-body ol { padding-left: 24px; margin-bottom: 24px; }
.article-body ul li { list-style: disc; margin-bottom: 8px; }
.article-body ol li { list-style: decimal; margin-bottom: 8px; }
.article-body li::marker { color: var(--accent); }
.article-body a { color: var(--accent); border-bottom: 1px solid rgba(0,217,166,0.4); transition: all 0.2s ease; }
.article-body a:hover { color: var(--primary-strong); border-bottom-color: transparent; }
.article-body code {
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  background: rgba(255,255,255,0.08); padding: 2px 8px;
  border-radius: 6px; font-size: 14px; color: var(--text-main);
}
.article-body pre {
  background: #04060F; border: 1px solid rgba(255,255,255,0.08);
  padding: 20px; border-radius: var(--radius-md);
  overflow-x: auto; margin: 28px 0;
}
.article-body pre code { background: transparent; padding: 0; font-size: 14px; color: #C7D5F4; }
.article-body table { width: 100%; border-collapse: collapse; margin: 28px 0; font-size: 14px; }
.article-body th, .article-body td { border: 1px solid rgba(255,255,255,0.12); padding: 12px 14px; text-align: left; }
.article-body th { background: rgba(46,107,255,0.14); color: var(--text-main); font-weight: 600; }
.article-body td { color: var(--text-sub); }
.article-body tr:nth-child(even) td { background: rgba(255,255,255,0.03); }
.article-body hr { border: none; border-top: 1px solid rgba(255,255,255,0.08); margin: 36px 0; }

/* ===== 空状态 ===== */
.article-empty {
  text-align: center; padding: 80px 24px;
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
}
.article-empty i { font-size: 48px; color: var(--text-dim); margin-bottom: 20px; }
.article-empty h2 { font-size: 24px; margin-bottom: 10px; }
.article-empty p { color: var(--text-sub); margin-bottom: 28px; }

/* ===== 相关推荐 ===== */
.related-section {
  padding: 64px 0 72px;
  border-top: 1px solid rgba(255,255,255,0.05);
  background: rgba(16,26,58,0.35);
}
.section-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap; margin-bottom: 32px;
}
.section-head h2 {
  font-size: 28px; font-weight: 700; letter-spacing: -0.3px;
  position: relative; padding-left: 16px;
}
.section-head h2::before {
  content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 4px; height: 24px; border-radius: 4px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  box-shadow: 0 0 12px rgba(0,217,166,0.5);
}
.text-link { color: var(--accent); font-size: 14px; font-weight: 600; transition: color 0.2s ease; }
.text-link:hover { color: var(--primary-strong); text-decoration: underline; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card {
  display: flex; flex-direction: column; overflow: hidden;
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card); border-color: rgba(76,140,255,0.5); }
.related-img { aspect-ratio: 16 / 9; overflow: hidden; }
.related-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.related-card:hover .related-img img { transform: scale(1.05); }
.related-info { padding: 18px 20px 22px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.tag {
  display: inline-flex; align-items: center; gap: 6px; align-self: flex-start;
  padding: 4px 12px; border-radius: 999px;
  background: rgba(46,107,255,0.14); border: 1px solid rgba(46,107,255,0.28);
  color: var(--primary-strong); font-size: 12px; font-weight: 600;
  letter-spacing: 0.5px; white-space: nowrap;
}
.related-info h3 { font-size: 17px; font-weight: 600; color: var(--text-main); line-height: 1.45; }
.related-info p { font-size: 14px; color: var(--text-sub); line-height: 1.6; }

/* ===== CTA 板块 ===== */
.article-cta { padding: 64px 0 80px; }
.cta-card {
  position: relative; max-width: 960px; margin: 0 auto;
  padding: 56px 48px; text-align: center;
  background: linear-gradient(160deg, rgba(46,107,255,0.14), rgba(0,217,166,0.05)), rgba(255,255,255,0.04);
  border-radius: 20px; overflow: hidden;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.06), var(--shadow-card);
}
.cta-card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 2px;
  background: linear-gradient(135deg, var(--primary), var(--accent) 80%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  pointer-events: none;
}
.cta-card h2 { font-size: 30px; font-weight: 700; letter-spacing: -0.3px; margin-bottom: 14px; }
.cta-card p { color: var(--text-sub); max-width: 560px; margin: 0 auto 30px; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ===== 页脚 ===== */
.site-footer { background: #04060F; border-top: 1px solid rgba(255,255,255,0.08); padding: 56px 0 0; }
.footer-grid { display: grid; grid-template-columns: 4fr 2fr 2fr 4fr; gap: 40px; padding-bottom: 40px; }
.footer-logo { display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 700; margin-bottom: 16px; }
.footer-brand p { color: var(--text-sub); font-size: 14px; line-height: 1.7; max-width: 340px; }
.footer-links h4, .footer-resources h4, .footer-contact h4 {
  font-size: 14px; color: var(--text-main); font-weight: 600; margin-bottom: 18px;
}
.footer-links a, .footer-resources a {
  display: block; color: var(--text-sub); font-size: 14px;
  margin-bottom: 12px; transition: color 0.2s ease;
}
.footer-links a:hover, .footer-resources a:hover { color: var(--accent); }
.footer-contact p { color: var(--text-sub); font-size: 14px; margin-bottom: 10px; }
.footer-copyright { border-top: 1px solid rgba(255,255,255,0.06); padding: 20px 0; text-align: center; }
.footer-copyright p { color: var(--text-dim); font-size: 13px; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px 32px; }
  .article-title { font-size: 36px; }
}
@media (max-width: 900px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .related-card:last-child { grid-column: span 2; flex-direction: row; align-items: center; }
  .related-card:last-child .related-img { width: 42%; flex-shrink: 0; aspect-ratio: 16 / 9; }
}
@media (max-width: 768px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .header-search { width: 220px; }
  .header-top-inner { gap: 14px; }
  .article-banner { padding: 40px 0 36px; }
  .article-title { font-size: 31px; }
  .article-section { padding: 40px 0 48px; }
  .cta-card { padding: 40px 28px; }
  .cta-card h2 { font-size: 25px; }
}
@media (max-width: 640px) {
  .related-grid { grid-template-columns: 1fr; }
  .related-card:last-child { grid-column: span 1; flex-direction: column; align-items: stretch; }
  .related-card:last-child .related-img { width: 100%; }
}
@media (max-width: 560px) {
  .header-search { display: none; }
  .header-cta { padding: 9px 16px; font-size: 13px; }
  .brand-name { font-size: 18px; }
  .brand-mark { width: 34px; height: 34px; font-size: 18px; border-radius: 10px; }
  .article-title { font-size: 27px; }
  .article-meta { gap: 14px; font-size: 13px; }
  .breadcrumbs { font-size: 12px; }
  .cta-actions .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
}