/* roulang page: index */
:root {
  --bg-deep: #081120;
  --bg-panel: rgba(255, 255, 255, 0.06);
  --bg-panel-strong: rgba(255, 255, 255, 0.09);
  --border-glass: rgba(255, 255, 255, 0.12);
  --border-glow: rgba(0, 209, 255, 0.55);
  --primary-cyan: #00D1FF;
  --primary-deep: #0096FF;
  --accent-amber: #FF8A2A;
  --text-main: #F2F7FB;
  --text-secondary: rgba(226, 240, 250, 0.78);
  --text-muted: rgba(200, 220, 235, 0.45);
  --success: #2BDE73;
  --danger: #FF5D5D;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
  --transition-base: all .25s ease;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; }
body {
  font-family: var(--font-sans);
  background-color: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(circle at 12% 18%, rgba(0, 182, 255, 0.16), transparent 28%),
    radial-gradient(circle at 82% 12%, rgba(0, 120, 255, 0.14), transparent 30%),
    radial-gradient(circle at 70% 82%, rgba(0, 209, 255, 0.12), transparent 25%),
    radial-gradient(circle at 30% 88%, rgba(255, 138, 42, 0.06), transparent 22%);
  pointer-events: none;
}
body::after {
  content: "";
  position: fixed;
  bottom: -5%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 209, 255, 0.2), transparent 65%);
  z-index: -2;
  pointer-events: none;
  filter: blur(80px);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary-cyan); text-decoration: none; transition: var(--transition-base); }
a:hover { color: #66E4FF; text-decoration: underline; }
ul, ol { list-style: none; }
button, input { font-family: inherit; font-size: 1rem; }
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.section-pad { padding: 80px 0; }
.text-center { text-align: center; }
.text-muted { color: var(--text-secondary); }
.fs-24 { font-size: 24px; }
.fw-800 { font-weight: 800; }
.section-head {
  text-align: center;
  margin-bottom: 56px;
}
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 209, 255, 0.1);
  border: 1px solid rgba(0, 209, 255, 0.22);
  color: var(--primary-cyan);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  margin-bottom: 18px;
}
.section-kicker i { font-size: 12px; }
.section-head h2 {
  font-size: 32px;
  line-height: 1.3;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: 0.2px;
}
.section-head p {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 640px;
  margin: 14px auto 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
  border-radius: var(--radius-md);
  padding: 12px 32px;
  font-size: 15px;
  line-height: 1.4;
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition-base);
  text-decoration: none !important;
  min-height: 44px;
  letter-spacing: 0.3px;
}
.btn-primary {
  background: linear-gradient(135deg, #00D1FF, #0096FF);
  color: #081120;
  border-color: transparent;
  box-shadow: 0 4px 18px rgba(0, 150, 255, 0.25);
}
.btn-primary:hover {
  box-shadow: 0 0 24px rgba(0, 209, 255, 0.55);
  transform: translateY(-2px);
  color: #081120;
  filter: brightness(1.05);
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 10px rgba(0, 150, 255, 0.3); }
.btn-primary:focus-visible { outline: 2px solid var(--primary-cyan); outline-offset: 3px; }
.btn-outline {
  background: transparent;
  color: var(--primary-cyan);
  border: 1px solid rgba(0, 209, 255, 0.5);
}
.btn-outline:hover {
  background: rgba(0, 209, 255, 0.08);
  border-color: var(--primary-cyan);
  box-shadow: 0 0 18px rgba(0, 209, 255, 0.3);
  transform: translateY(-2px);
  color: var(--primary-cyan);
}
.btn-amber {
  background: linear-gradient(135deg, #FF8A2A, #FF6B2C);
  color: #081120;
  box-shadow: 0 4px 16px rgba(255, 138, 42, 0.2);
}
.btn-amber:hover {
  box-shadow: 0 0 20px rgba(255, 138, 42, 0.5);
  transform: translateY(-2px);
  color: #081120;
}
.btn-block { width: 100%; }

/* Glass Card */
.glass-card {
  background: var(--bg-panel);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 24px;
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}
.glass-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 8%;
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, rgba(255,255,255,0.6), transparent);
}
.glass-card:hover {
  border-color: rgba(0, 209, 255, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45);
}

/* ===== Header / Nav ===== */
.site-header {
  padding: 16px 0 8px;
  position: relative;
  z-index: 100;
}
.nav-card {
  background: rgba(7, 16, 28, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 12px 16px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.28);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, #00D1FF, #0096FF);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #081120;
  font-size: 20px;
  font-weight: 900;
  box-shadow: 0 0 14px rgba(0, 209, 255, 0.35);
}
.brand-text {
  font-weight: 800;
  font-size: 18px;
  color: var(--text-main);
  white-space: nowrap;
  letter-spacing: 0.4px;
}
.brand-text small { font-weight: 400; font-size: 12px; color: var(--text-muted); display: block; line-height: 1.2; }
.nav-desktop {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.nav-pill {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}
.nav-pill i { font-size: 14px; opacity: 0.9; }
.nav-pill:hover {
  color: var(--primary-cyan);
  background: rgba(0, 209, 255, 0.07);
  border-color: rgba(0, 209, 255, 0.18);
  transform: translateY(-2px);
  text-decoration: none;
}
.nav-pill.active {
  background: linear-gradient(135deg, #00D1FF, #0096FF);
  color: #081120;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(0, 150, 255, 0.25);
}
.nav-pill.active i { color: #081120; }
.nav-cta-desk { flex-shrink: 0; }
.nav-cta-desk .btn { padding: 9px 22px; min-height: 40px; font-size: 14px; }
.title-bar { display: none; }
.mobile-nav { display: none; }

/* Hero */
.hero {
  position: relative;
  padding: 110px 0 80px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: -10%;
  left: -5%;
  width: 70%;
  height: 120%;
  background: url('/assets/images/backpic/back-1.png') no-repeat center/cover;
  opacity: 0.18;
  z-index: 0;
  border-radius: 30px;
  filter: blur(1px);
}
.hero .container { position: relative; z-index: 2; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 48px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 209, 255, 0.1);
  border: 1px solid rgba(0, 209, 255, 0.25);
  border-radius: var(--radius-pill);
  color: var(--primary-cyan);
  font-size: 13px;
  padding: 5px 16px;
  font-weight: 500;
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}
.hero-badge .dot {
  width: 6px;
  height: 6px;
  background: var(--success);
  border-radius: 50%;
  display: inline-block;
  animation: pulse-dot 1.6s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(0.8); }
}
.hero h1 {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 0.3px;
  margin: 0 0 18px;
  color: var(--text-main);
}
.hero-hl {
  background: linear-gradient(90deg, #00D1FF, #66B8FF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 510px;
  line-height: 1.8;
  margin-bottom: 30px;
}
.hero-ctas { display: flex; flex-wrap: wrap; gap: 16px; }
.hero-meta-row {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 38px;
  flex-wrap: wrap;
}
.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}
.hero-meta-item i { color: var(--primary-cyan); }
.hero-visual {
  position: relative;
}
.hero-glass-board {
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(18px);
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 20px;
  padding: 28px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
  position: relative;
}
.hero-glass-board::before {
  content: "";
  position: absolute;
  top: 0;
  left: 8%;
  width: 50%;
  height: 1px;
  background: linear-gradient(90deg, rgba(255,255,255,0.5), transparent);
}
.board-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.board-title { font-size: 14px; font-weight: 600; color: rgba(210, 225, 238, 0.7); }
.board-live {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(43, 222, 115, 0.12);
  color: var(--success);
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-pill);
  padding: 3px 12px;
}
.board-live .dot { width: 5px; height: 5px; background: var(--success); border-radius: 50%; }
.board-chart { display: flex; align-items: flex-end; gap: 12px; height: 130px; margin-bottom: 20px; }
.board-bar {
  flex: 1;
  border-radius: 8px 8px 4px 4px;
  background: linear-gradient(180deg, #00D1FF, rgba(0, 150, 255, 0.15));
  min-width: 10px;
  animation: grow-bar 2.4s ease-in-out infinite alternate;
  transform-origin: bottom;
}
.board-bar:nth-child(1) { height: 45%; animation-delay: 0s; }
.board-bar:nth-child(2) { height: 70%; animation-delay: .2s; }
.board-bar:nth-child(3) { height: 52%; animation-delay: .4s; }
.board-bar:nth-child(4) { height: 88%; animation-delay: .6s; }
.board-bar:nth-child(5) { height: 62%; animation-delay: .8s; }
.board-bar:nth-child(6) { height: 78%; animation-delay: 1s; }
.board-bar:nth-child(7) { height: 56%; animation-delay: 1.2s; }
@keyframes grow-bar {
  from { transform: scaleY(0.85); opacity: 0.75; }
  to { transform: scaleY(1); opacity: 1; }
}
.board-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(0, 209, 255, 0.07);
  border-radius: 12px;
  padding: 12px 16px;
  border: 1px solid rgba(0, 209, 255, 0.12);
}
.board-num { font-size: 26px; font-weight: 800; color: var(--primary-cyan); }
.board-label { font-size: 12px; color: var(--text-muted); }
.board-arrow { position: absolute; top: -22px; right: 18px; width: 48px; height: 48px; border-radius: 50%; background: var(--accent-amber); display: flex; align-items: center; justify-content: center; color: #081120; font-size: 20px; box-shadow: 0 8px 20px rgba(255, 138, 42, 0.3); border: 2px solid rgba(255, 255, 255, 0.2); }
.scroll-down {
  position: absolute;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 36px;
  border: 2px solid rgba(0, 209, 255, 0.4);
  border-radius: 12px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 6px;
}
.scroll-down::before {
  content: "";
  width: 3px;
  height: 8px;
  background: var(--primary-cyan);
  border-radius: 2px;
  animation: scroll-jump 1.4s infinite;
}
@keyframes scroll-jump {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(10px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

/* Info strip */
.info-strip {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding: 12px 0;
  background: rgba(0, 20, 36, 0.4);
}
.info-strip-inner { display: flex; justify-content: center; align-items: center; gap: 28px; flex-wrap: wrap; }
.info-strip span { font-size: 13px; color: var(--text-muted); display: flex; align-items: center; gap: 6px; }
.info-strip span i { color: var(--primary-cyan); opacity: 0.7; }

/* Steps */
.steps-section { position: relative; }
.steps-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr 0.9fr;
  gap: 32px;
  align-items: stretch;
}
.step-card {
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  min-height: 260px;
}
.step-card.center { transform: scale(1.04); background: rgba(255, 255, 255, 0.08); border-color: rgba(0, 209, 255, 0.25); padding: 40px 28px; min-height: 280px; justify-content: center; }
.step-card .step-arrow {
  position: absolute;
  top: 50%;
  right: -30px;
  transform: translateY(-50%);
  color: rgba(0, 209, 255, 0.5);
  font-size: 28px;
  z-index: 3;
}
.step-card.center .step-arrow { display: none; }
.step-num {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(0, 209, 255, 0.15), rgba(0, 150, 255, 0.1));
  border: 1px solid rgba(0, 209, 255, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
  color: var(--primary-cyan);
  margin-bottom: 18px;
}
.step-card:nth-child(3) .step-num {
  background: rgba(255, 138, 42, 0.12);
  border-color: rgba(255, 138, 42, 0.35);
  color: var(--accent-amber);
}
.step-title { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
.step-desc { font-size: 15px; color: var(--text-secondary); line-height: 1.7; }
.step-tag {
  margin-top: 18px;
  display: inline-block;
  width: fit-content;
  background: rgba(0, 209, 255, 0.1);
  border: 1px solid rgba(0, 209, 255, 0.2);
  border-radius: var(--radius-pill);
  padding: 3px 14px;
  font-size: 12px;
  color: var(--primary-cyan);
}
.step-card.center .step-tag {
  background: rgba(255, 138, 42, 0.12);
  border-color: rgba(255, 138, 42, 0.25);
  color: var(--accent-amber);
}

/* Cases */
.cases-section { background: rgba(0, 20, 40, 0.25); border-block: 1px solid rgba(255,255,255,0.05); }
.case-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.case-card { padding: 0; overflow: hidden; }
.case-card:nth-child(2) { grid-row: span 2; }
.case-cover { height: 160px; background: url('/assets/images/coverpic/cover-4.webp') no-repeat center/cover; position: relative; }
.case-card:nth-child(2) .case-cover { height: 220px; }
.case-card:nth-child(3) .case-cover { background-image: url('/assets/images/coverpic/cover-3.png'); }
.case-card:nth-child(4) .case-cover { background-image: url('/assets/images/coverpic/cover-8.webp'); }
.case-cover::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 30%, rgba(8,17,32,0.88)); }
.case-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  background: rgba(8, 17, 32, 0.65);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-pill);
  padding: 3px 14px;
  font-size: 12px;
  color: var(--primary-cyan);
  border: 1px solid rgba(255,255,255,0.1);
}
.case-body { padding: 20px; }
.case-title { font-weight: 700; font-size: 17px; margin-bottom: 8px; }
.case-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }
.case-stats {
  margin-top: 14px;
  display: flex;
  align-items: center;
  gap: 18px;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 14px;
}
.case-stat-num { font-size: 22px; font-weight: 800; color: var(--primary-cyan); }
.case-stat-label { font-size: 12px; color: var(--text-muted); }


/* News list */
.news-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.news-item {
  padding: 20px 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.news-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(0, 209, 255, 0.1);
  border: 1px solid rgba(0, 209, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--primary-cyan);
  font-size: 18px;
}
.news-content { flex: 1; }
.news-meta { display: flex; align-items: center; gap: 12px; font-size: 12px; color: var(--text-muted); margin-bottom: 6px; }
.news-meta .news-cat { background: rgba(255, 138, 42, 0.12); color: var(--accent-amber); padding: 1px 10px; border-radius: var(--radius-pill); border: 1px solid rgba(255, 138, 42, 0.2); font-size: 11px; }
.news-title { font-weight: 600; font-size: 15px; line-height: 1.5; margin-bottom: 4px; color: var(--text-main); }
.news-title a { color: inherit; }
.news-title a:hover { color: var(--primary-cyan); text-decoration: none; }
.news-summary { font-size: 13px; color: var(--text-secondary); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-link { display: inline-flex; align-items: center; gap: 5px; font-size: 13px; color: var(--primary-cyan); margin-top: 6px; }
.news-link i { font-size: 12px; }
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 48px 20px;
  background: rgba(255,255,255,0.04);
  border: 1px dashed rgba(255,255,255,0.15);
  border-radius: var(--radius-lg);
  color: var(--text-muted);
}
.empty-state i { font-size: 32px; display: block; margin-bottom: 12px; opacity: 0.5; }

/* FAQ */
.faq-section { background: rgba(0, 20, 40, 0.18); border-block: 1px solid rgba(255,255,255,0.045); }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  margin-bottom: 14px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: var(--transition-base);
  overflow: hidden;
}
.faq-item:hover { border-color: rgba(0, 209, 255, 0.25); }
.faq-item.is-active {
  border-color: var(--primary-cyan);
  box-shadow: 0 0 20px rgba(0, 209, 255, 0.15);
  background: rgba(255,255,255,0.08);
}
.faq-q {
  width: 100%;
  padding: 18px 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  text-align: left;
  min-height: 48px;
  gap: 14px;
}
.faq-q:hover { color: var(--primary-cyan); }
.faq-icon { flex-shrink: 0; font-size: 22px; color: var(--primary-cyan); transition: var(--transition-base); transform: rotate(0deg); }
.faq-item.is-active .faq-icon { transform: rotate(45deg); color: var(--accent-amber); }
.faq-a { display: none; padding: 0 22px 18px; color: var(--text-secondary); font-size: 14px; line-height: 1.75; }

/* CTA final */
.final-cta { position: relative; }
.cta-board {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(0, 209, 255, 0.18);
  border-radius: 24px;
  padding: 48px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
  overflow: hidden;
  position: relative;
}
.cta-board::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -10%;
  width: 400px;
  height: 300px;
  background: radial-gradient(circle, rgba(0, 209, 255, 0.15), transparent 70%);
  pointer-events: none;
}
.cta-left h2 { font-size: 30px; font-weight: 800; line-height: 1.35; margin-bottom: 14px; }
.cta-left p { font-size: 15px; color: var(--text-secondary); max-width: 460px; }
.cta-form { margin-top: 28px; }
.form-row { display: flex; gap: 10px; flex-wrap: wrap; }
.form-input {
  flex: 1;
  min-width: 200px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  color: var(--text-main);
  font-size: 15px;
  transition: var(--transition-base);
}
.form-input::placeholder { color: rgba(200, 220, 235, 0.4); }
.form-input:focus {
  outline: none;
  border-color: var(--primary-cyan);
  box-shadow: 0 0 0 3px rgba(0, 209, 255, 0.15);
  background: rgba(255,255,255,0.11);
}
.form-input.input-error { border-color: var(--danger); box-shadow: 0 0 0 3px rgba(255, 93, 93, 0.12); }
.form-error-msg { color: var(--danger); font-size: 13px; margin-top: 8px; display: none; }
.form-success { color: var(--success); font-size: 13px; margin-top: 8px; display: none; align-items: center; gap: 6px; }
.form-success.show { display: flex; }
.form-error-msg.show { display: block; }
.cta-right { display: flex; flex-direction: column; justify-content: center; gap: 16px; }
.trust-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: var(--transition-base);
}
.trust-item:hover { border-color: rgba(0, 209, 255, 0.2); }
.trust-icon { width: 36px; height: 36px; border-radius: 50%; background: rgba(0, 209, 255, 0.1); display: flex; align-items: center; justify-content: center; color: var(--primary-cyan); flex-shrink: 0; }
.trust-item:nth-child(2) .trust-icon { background: rgba(255, 138, 42, 0.12); color: var(--accent-amber); }
.trust-text { font-size: 13px; color: var(--text-secondary); line-height: 1.55; }
.trust-text strong { color: var(--text-main); font-weight: 600; display: block; }

/* Footer */
.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(5, 13, 24, 0.5);
  padding-top: 48px;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.8fr 0.8fr 1fr;
  gap: 32px;
  padding-bottom: 36px;
}
.footer-brand .brand-logo { margin-bottom: 14px; }
.footer-brand p { font-size: 14px; color: var(--text-muted); line-height: 1.7; max-width: 260px; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: var(--text-main); margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: var(--text-secondary); font-size: 14px; text-decoration: none; transition: var(--transition-base); }
.footer-col ul li a:hover { color: var(--primary-cyan); }
.footer-contact li { color: var(--text-secondary); font-size: 14px; margin-bottom: 8px; display: flex; gap: 8px; align-items: center; }
.footer-contact i { color: var(--primary-cyan); width: 18px; }
.footer-copy {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 18px 0;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}
.footer-copy a { color: var(--text-muted); }
.footer-copy a:hover { color: var(--primary-cyan); }

/* Section divider */
.section-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 209, 255, 0.2), transparent);
  margin: 0;
}

/* ===== Responsive ===== */
@media screen and (max-width: 1023px) {
  .section-pad { padding: 64px 0; }
  .hero { padding: 80px 0 64px; }
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-sub { max-width: 100%; }
  .hero-visual { max-width: 520px; margin: 0 auto; }
  .steps-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .step-card.center { transform: none; min-height: auto; }
  .step-arrow { display: none !important; }
  .case-grid { grid-template-columns: 1fr 1fr; }
  .case-card:nth-child(2) { grid-row: auto; }
  .cta-board { grid-template-columns: 1fr; padding: 32px; gap: 28px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .section-head h2 { font-size: 28px; }
}
@media screen and (max-width: 767px) {
  .section-pad { padding: 48px 0; }
  .container { padding: 0 16px; }
  .nav-desktop { display: none; }
  .title-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
  }
  .title-bar .mobile-toggle {
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.15);
    padding: 8px 12px;
    border-radius: var(--radius-md);
    color: var(--text-main);
    cursor: pointer;
    font-size: 18px;
  }
  .mobile-nav {
    display: none;
    position: absolute;
    top: 76px;
    left: 16px;
    right: 16px;
    background: rgba(8, 17, 32, 0.96);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-lg);
    padding: 16px;
    z-index: 999;
    box-shadow: 0 20px 50px rgba(0,0,0,0.4);
  }
  .mobile-nav.open { display: block; }
  .mobile-nav .nav-pill { display: flex; width: 100%; margin-bottom: 8px; padding: 12px 16px; border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius-md); font-size: 15px; }
  .mobile-nav .nav-pill.active { background: rgba(0, 209, 255, 0.12); color: var(--primary-cyan); border-color: rgba(0, 209, 255, 0.3); box-shadow: none; }
  .mobile-nav .btn { margin-top: 10px; width: 100%; }
  .site-header { padding-bottom: 2px; }
  .info-strip-inner { gap: 12px; flex-direction: column; align-items: flex-start; }
  .hero h1 { font-size: 32px; }
  .hero-sub { font-size: 16px; }
  .hero-ctas .btn { padding: 11px 22px; }
  .steps-grid { grid-template-columns: 1fr; }
  .step-card, .step-card.center { min-height: auto; }
  .case-grid { grid-template-columns: 1fr; }
  .case-card:nth-child(2) .case-cover { height: 180px; }
  .news-grid { grid-template-columns: 1fr; }
  .faq-q { font-size: 14px; padding: 16px; }
  .faq-a { padding: 0 16px 14px; }
  .cta-board { padding: 24px 20px; }
  .cta-left h2 { font-size: 24px; }
  .form-row { flex-direction: column; }
  .form-input { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 20px; padding-bottom: 24px; }
  .footer-col { border-bottom: 1px solid rgba(255,255,255,0.05); padding-bottom: 16px; }
}
@media screen and (max-width: 520px) {
  .hero h1 { font-size: 28px; }
  .section-head h2 { font-size: 24px; }
  .nav-card { padding: 10px 12px; gap: 8px; }
  .brand-text { font-size: 16px; }
  .hero-meta-row { gap: 10px; flex-direction: column; align-items: flex-start; }
}

/* roulang page: category1 */
:root {
  --bg-deep: #081120;
  --bg-card: rgba(255, 255, 255, 0.06);
  --bg-card-hover: rgba(255, 255, 255, 0.09);
  --bg-input: rgba(255, 255, 255, 0.08);
  --primary: #00D1FF;
  --primary-deep: #0096FF;
  --accent: #FF8A2A;
  --success: #4ECB71;
  --danger: #FF5C5C;
  --text-high: #F2F7FF;
  --text-body: #C6D3E8;
  --text-weak: #8B9BB5;
  --border-glass: rgba(255, 255, 255, 0.12);
  --radius-card: 16px;
  --radius-btn: 12px;
  --radius-pill: 999px;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
  --space-section-desktop: 80px;
  --space-section-tablet: 64px;
  --space-section-mobile: 48px;
  --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-family);
  background-color: var(--bg-deep);
  background-image:
    radial-gradient(ellipse 60% 40% at 15% 0%, rgba(0, 209, 255, 0.15), transparent 60%),
    radial-gradient(ellipse 40% 50% at 85% 20%, rgba(0, 150, 255, 0.12), transparent 50%),
    radial-gradient(ellipse 50% 40% at 60% 90%, rgba(0, 209, 255, 0.08), transparent 60%);
  background-attachment: fixed;
  color: var(--text-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; transition: color 0.25s ease, opacity 0.25s ease; }
a:hover { color: #66E6FF; }
img { max-width: 100%; height: auto; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }
.site-header { position: relative; z-index: 99; padding-top: 20px; }

/* ===== Navigation Card ===== */
.nav-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: rgba(13, 23, 40, 0.75);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--border-glass);
  border-radius: 20px;
  padding: 14px 22px;
  box-shadow: var(--shadow-card);
}
.title-bar { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.brand-logo { display: flex; align-items: center; gap: 10px; }
.brand-mark {
  width: 40px; height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  color: var(--bg-deep);
  font-weight: 800;
  font-size: 20px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 18px rgba(0, 209, 255, 0.35);
}
.brand-text { font-size: 17px; font-weight: 700; color: var(--text-high); line-height: 1.3; }
.brand-text small { display: block; font-size: 11px; color: var(--text-weak); font-weight: 400; letter-spacing: 0.08em; }
.nav-brand-desk { display: none; }
.nav-desktop { display: none; align-items: center; gap: 8px; }
.nav-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 16px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-body);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: all 0.25s ease;
  white-space: nowrap;
}
.nav-pill i { color: var(--primary); font-size: 13px; }
.nav-pill:hover {
  border-color: var(--primary);
  color: var(--text-high);
  background: rgba(0, 209, 255, 0.08);
  transform: translateY(-2px);
  box-shadow: 0 0 16px rgba(0, 209, 255, 0.18);
}
.nav-pill.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  color: var(--bg-deep);
  font-weight: 700;
  border-color: transparent;
  box-shadow: 0 0 18px rgba(0, 209, 255, 0.35);
}
.nav-pill.active i { color: var(--bg-deep); }
.nav-cta-desk { display: none; }
.mobile-toggle {
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--border-glass);
  border-radius: 10px;
  color: var(--text-high);
  width: 40px; height: 40px;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mobile-nav {
  display: none;
  padding: 16px 20px 24px;
  margin-top: 10px;
  background: rgba(13, 23, 40, 0.85);
  backdrop-filter: blur(18px);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
  flex-direction: column;
  gap: 10px;
  box-shadow: var(--shadow-card);
}
.mobile-nav.open { display: flex; }
.mobile-nav .nav-pill { width: 100%; justify-content: flex-start; }
.btn-block { width: 100%; justify-content: center; margin-top: 4px; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.28s ease;
  text-decoration: none;
  white-space: nowrap;
  outline: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  color: var(--bg-deep);
  box-shadow: 0 4px 18px rgba(0, 209, 255, 0.25);
}
.btn-primary:hover {
  color: var(--bg-deep);
  box-shadow: 0 0 24px rgba(0, 209, 255, 0.55);
  transform: translateY(-2px);
  filter: brightness(1.08);
}
.btn-secondary {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
}
.btn-secondary:hover {
  background: rgba(0, 209, 255, 0.08);
  box-shadow: 0 0 20px rgba(0, 209, 255, 0.3);
  color: #66E6FF;
  transform: translateY(-2px);
}
.btn-accent {
  background: linear-gradient(135deg, #FFA552, var(--accent));
  color: var(--bg-deep);
  box-shadow: 0 4px 18px rgba(255, 138, 42, 0.25);
}
.btn-accent:hover {
  color: var(--bg-deep);
  box-shadow: 0 0 24px rgba(255, 138, 42, 0.5);
  transform: translateY(-2px);
}
.btn:focus-visible {
  box-shadow: 0 0 0 2px var(--bg-deep), 0 0 0 4px var(--primary);
}
.btn:active { transform: translateY(0) scale(0.98); }
.btn-lg { padding: 16px 36px; font-size: 16px; }

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  padding: 60px 0 60px;
}
.page-hero .hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  opacity: 0.25;
  border-radius: 24px;
  overflow: hidden;
}
.page-hero .hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(8, 17, 32, 0.92) 30%, rgba(8, 17, 32, 0.65) 70%, rgba(8, 17, 32, 0.35));
  border-radius: 24px;
}
.hero-card {
  position: relative;
  display: flex;
  align-items: center;
  gap: 50px;
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-glass);
  border-radius: 24px;
  padding: 46px 50px;
  min-height: 430px;
  overflow: hidden;
}
.hero-card::before {
  content: '';
  position: absolute;
  top: 0; left: 8%; right: 8%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
}
.hero-left { flex: 1.2; position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 209, 255, 0.12);
  border: 1px solid rgba(0, 209, 255, 0.3);
  color: var(--primary);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 18px;
}
.hero-left h1 {
  font-size: 40px;
  line-height: 1.25;
  font-weight: 800;
  color: var(--text-high);
  margin: 0 0 16px;
  letter-spacing: 0.01em;
}
.hero-left h1 span { color: var(--primary); }
.hero-left p.hero-desc {
  font-size: 16px;
  color: var(--text-body);
  max-width: 560px;
  margin: 0 0 30px;
  line-height: 1.8;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-right { flex: 0.85; position: relative; z-index: 2; }
.hero-visual {
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border-glass);
  box-shadow: 0 0 50px rgba(0, 209, 255, 0.12);
}
.hero-visual img { width: 100%; height: 280px; object-fit: cover; display: block; }
.hero-scroll {
  position: absolute;
  bottom: -38px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-weak);
  font-size: 22px;
  animation: scrollBounce 2s infinite;
  z-index: 3;
}
@keyframes scrollBounce {
  0%, 100% { transform: translate(-50%, 0); opacity: 0.6; }
  50% { transform: translate(-50%, 8px); opacity: 1; }
}

/* ===== Data Strip ===== */
.data-strip {
  margin-top: 64px;
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.data-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-card);
  padding: 24px 20px;
  text-align: center;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}
.data-card::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 60%; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 209, 255, 0.5), transparent);
}
.data-card:hover {
  border-color: rgba(0, 209, 255, 0.4);
  transform: translateY(-4px);
  box-shadow: 0 0 24px rgba(0, 209, 255, 0.1);
}
.data-card .num {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.3;
  letter-spacing: 0.01em;
}
.data-card .label {
  font-size: 13px;
  color: var(--text-body);
  margin-top: 6px;
}

/* ===== Service Section ===== */
.service-section {
  padding: 80px 0;
}
.section-head {
  text-align: center;
  margin-bottom: 50px;
  position: relative;
}
.section-head .tag {
  display: inline-block;
  font-size: 13px;
  color: var(--primary);
  background: rgba(0, 209, 255, 0.08);
  border: 1px solid rgba(0, 209, 255, 0.25);
  border-radius: var(--radius-pill);
  padding: 5px 16px;
  margin-bottom: 14px;
  font-weight: 600;
}
.section-head h2 {
  font-size: 30px;
  font-weight: 800;
  color: var(--text-high);
  margin: 0 0 10px;
  letter-spacing: 0.01em;
}
.section-head p.section-sub {
  color: var(--text-body);
  font-size: 16px;
  margin: 0 auto;
  max-width: 640px;
}
.service-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 50px;
  align-items: center;
}
.service-features { display: flex; flex-direction: column; gap: 20px; }
.feature-item {
  display: flex;
  gap: 18px;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-card);
  padding: 26px 24px;
  transition: all 0.25s ease;
  position: relative;
}
.feature-item::before {
  content: '';
  position: absolute;
  top: 0; left: 6%; right: 40%;
  height: 1px;
  background: linear-gradient(90deg, rgba(0, 209, 255, 0.6), transparent);
}
.feature-item:hover {
  border-color: rgba(0, 209, 255, 0.35);
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-2px);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
}
.feature-icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(0, 209, 255, 0.15), rgba(0, 150, 255, 0.1));
  border: 1px solid rgba(0, 209, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--primary);
}
.feature-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-high);
  margin: 0 0 6px;
}
.feature-body p {
  margin: 0;
  font-size: 14.5px;
  color: var(--text-body);
  line-height: 1.7;
}
.service-metrics {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.metric-card {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-card);
  padding: 24px 24px;
  position: relative;
  overflow: hidden;
  transition: all 0.25s ease;
}
.metric-card:hover {
  border-color: rgba(255, 138, 42, 0.4);
  box-shadow: 0 0 20px rgba(255, 138, 42, 0.08);
}
.metric-card .m-icon {
  font-size: 24px;
  color: var(--accent);
  margin-bottom: 12px;
}
.metric-card .m-num {
  font-size: 34px;
  font-weight: 800;
  color: var(--text-high);
  line-height: 1.2;
}
.metric-card .m-num span { color: var(--accent); }
.metric-card .m-label { font-size: 13.5px; color: var(--text-body); margin-top: 6px; }

/* ===== Flow Steps ===== */
.flow-section {
  padding: 80px 0;
  background: rgba(255, 255, 255, 0.02);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.flow-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  position: relative;
}
.flow-step {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  position: relative;
  transition: all 0.25s ease;
}
.flow-step::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 50%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 209, 255, 0.5), transparent);
}
.flow-step:hover {
  border-color: rgba(0, 209, 255, 0.4);
  transform: translateY(-4px);
  box-shadow: 0 0 24px rgba(0, 209, 255, 0.08);
}
.flow-step .step-num {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  background: rgba(0, 209, 255, 0.1);
  border: 1px solid rgba(0, 209, 255, 0.25);
  display: inline-block;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 18px;
  letter-spacing: 0.04em;
}
.flow-step h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-high);
  margin: 0 0 10px;
}
.flow-step p {
  font-size: 14.5px;
  color: var(--text-body);
  margin: 0;
  line-height: 1.7;
}
.flow-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  right: -22px;
  color: rgba(0, 209, 255, 0.5);
  font-size: 18px;
  z-index: 2;
  display: flex;
  align-items: center;
}

/* ===== Scenarios ===== */
.scenario-section {
  padding: 80px 0;
}
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.scenario-card {
  display: flex;
  gap: 20px;
  align-items: center;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-card);
  padding: 26px;
  transition: all 0.25s ease;
}
.scenario-card:hover {
  border-color: rgba(0, 209, 255, 0.35);
  transform: translateY(-3px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}
.scenario-card .s-icon {
  width: 54px; height: 54px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(255, 138, 42, 0.15), rgba(255, 138, 42, 0.05));
  border: 1px solid rgba(255, 138, 42, 0.3);
  color: var(--accent);
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.scenario-card .s-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-high);
  margin: 0 0 4px;
}
.scenario-card .s-body p {
  margin: 0;
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.7;
}
.scenario-card-wide {
  grid-column: span 2;
  flex-direction: row;
  align-items: center;
  padding: 30px 26px;
}

/* ===== Process Panel ===== */
.process-panel {
  padding: 80px 0;
}
.process-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: 24px;
  padding: 40px 44px;
  position: relative;
  overflow: hidden;
}
.process-layout::before {
  content: '';
  position: absolute;
  top: 0; left: 6%; right: 6%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
}
.process-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0; }
.process-list li {
  display: flex;
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  align-items: flex-start;
}
.process-list li:last-child { border-bottom: none; }
.process-step {
  flex-shrink: 0;
  width: 34px; height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  color: var(--bg-deep);
  font-weight: 800;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 4px;
}
.process-content h4 {
  margin: 0 0 4px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-high);
}
.process-content p { margin: 0; font-size: 14px; color: var(--text-body); line-height: 1.6; }
.process-note {
  background: rgba(0, 209, 255, 0.06);
  border: 1px solid rgba(0, 209, 255, 0.15);
  border-radius: var(--radius-card);
  padding: 18px 20px;
  margin-top: 20px;
  font-size: 13.5px;
  color: var(--text-body);
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.process-note i { color: var(--primary); margin-top: 4px; }

/* ===== FAQ ===== */
.faq-section {
  padding: 80px 0;
}
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-card);
  margin-bottom: 14px;
  overflow: hidden;
  transition: all 0.25s ease;
}
.faq-item:hover {
  border-color: rgba(0, 209, 255, 0.25);
}
.faq-item.active {
  border-color: var(--primary);
  box-shadow: 0 0 20px rgba(0, 209, 255, 0.08);
  background: rgba(255, 255, 255, 0.06);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  background: transparent;
  border: none;
  cursor: pointer;
  font-family: var(--font-family);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-high);
  text-align: left;
  transition: color 0.2s ease;
  min-height: 44px;
}
.faq-question:hover { color: var(--primary); }
.faq-question .faq-icon {
  flex-shrink: 0;
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 1px solid rgba(0, 209, 255, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--primary);
  transition: all 0.25s ease;
}
.faq-item.active .faq-icon {
  background: rgba(0, 209, 255, 0.15);
  transform: rotate(45deg);
}
.faq-answer {
  display: none;
  padding: 0 22px 18px 22px;
  color: var(--text-body);
  font-size: 14.5px;
  line-height: 1.8;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.faq-item.active .faq-answer { display: block; padding-top: 14px; }

/* ===== CTA ===== */
.cta-section {
  padding: 80px 0 40px;
}
.cta-panel {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 50px;
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-glass);
  border-radius: 24px;
  padding: 44px 48px;
  position: relative;
  overflow: hidden;
}
.cta-panel::before {
  content: '';
  position: absolute;
  top: 0; left: 8%; right: 8%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
}
.cta-panel .cta-glow {
  position: absolute;
  top: -40%;
  right: -20%;
  width: 60%;
  height: 120%;
  background: radial-gradient(ellipse, rgba(0, 209, 255, 0.15), transparent 70%);
  pointer-events: none;
}
.cta-left h2 {
  font-size: 30px;
  font-weight: 800;
  color: var(--text-high);
  margin: 0 0 12px;
  line-height: 1.3;
}
.cta-left p { color: var(--text-body); font-size: 15px; margin: 0 0 24px; }
.cta-form { display: flex; flex-direction: column; gap: 14px; max-width: 460px; }
.cta-form input {
  width: 100%;
  padding: 15px 18px;
  background: var(--bg-input);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-btn);
  color: var(--text-high);
  font-family: var(--font-family);
  font-size: 15px;
  outline: none;
  transition: all 0.25s ease;
}
.cta-form input::placeholder { color: var(--text-weak); }
.cta-form input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 16px rgba(0, 209, 255, 0.2);
  background: rgba(255, 255, 255, 0.1);
}
.cta-form input.input-error {
  border-color: var(--danger);
  box-shadow: 0 0 12px rgba(255, 92, 92, 0.15);
}
.form-error {
  color: var(--danger);
  font-size: 13px;
  margin-top: -6px;
  padding-left: 10px;
  display: none;
}
.form-success {
  display: none;
  color: var(--success);
  font-size: 14px;
  padding: 10px 14px;
  background: rgba(78, 203, 113, 0.1);
  border: 1px solid rgba(78, 203, 113, 0.3);
  border-radius: var(--radius-btn);
  align-items: center;
  gap: 10px;
}
.cta-right {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 20px;
}
.cta-trust {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 0;
  margin: 0;
  list-style: none;
}
.cta-trust li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 14.5px;
  color: var(--text-body);
}
.cta-trust li i {
  color: var(--primary);
  margin-top: 4px;
  font-size: 16px;
}

/* ===== Back Home ===== */
.back-home {
  padding: 30px 0 70px;
  text-align: center;
}

/* ===== Footer ===== */
.site-footer {
  background: rgba(8, 17, 32, 0.6);
  backdrop-filter: blur(14px);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 60px 0 30px;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
  gap: 36px;
  margin-bottom: 36px;
}
.footer-brand p { font-size: 14px; color: var(--text-body); line-height: 1.7; margin: 16px 0 0; }
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-high);
  margin: 0 0 16px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 24px; height: 2px;
  background: linear-gradient(90deg, var(--primary), transparent);
  border-radius: 2px;
}
.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col ul a {
  color: var(--text-body);
  font-size: 14px;
  transition: all 0.2s ease;
}
.footer-col ul a:hover { color: var(--primary); padding-left: 4px; }
.footer-col .footer-contact li {
  color: var(--text-body);
  font-size: 14px;
  display: flex;
  gap: 10px;
  align-items: center;
}
.footer-col .footer-contact i { color: var(--primary); width: 18px; text-align: center; }
.footer-copy {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 24px;
  text-align: center;
  color: var(--text-weak);
  font-size: 13px;
  line-height: 1.8;
}
.footer-copy a { color: var(--text-weak); }
.footer-copy a:hover { color: var(--primary); }

/* ===== Responsive ===== */
@media (min-width: 1024px) {
  .nav-desktop { display: flex; }
  .nav-cta-desk { display: flex; }
  .mobile-toggle { display: none; }
  .nav-brand-desk { display: flex; }
  .title-bar { display: none; }
  .mobile-nav { display: none !important; }
}
@media (max-width: 1023px) {
  .nav-card { flex-wrap: wrap; }
  .hero-card { flex-direction: column; padding: 36px 30px; }
  .hero-left h1 { font-size: 32px; }
  .hero-right { width: 100%; }
  .service-layout { grid-template-columns: 1fr; gap: 36px; }
  .data-strip { grid-template-columns: repeat(2, 1fr); }
  .flow-steps { grid-template-columns: 1fr; }
  .flow-arrow { display: none; }
  .scenario-grid { grid-template-columns: 1fr; }
  .scenario-card-wide { grid-column: span 1; }
  .process-layout { grid-template-columns: 1fr; }
  .cta-panel { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
  .container { padding: 0 16px; }
  .nav-card { padding: 12px 16px; border-radius: 16px; }
  .hero-card { padding: 28px 20px; border-radius: 18px; min-height: auto; }
  .hero-left h1 { font-size: 27px; }
  .hero-left p.hero-desc { font-size: 15px; }
  .btn { padding: 12px 22px; font-size: 14px; }
  .section-head h2 { font-size: 25px; }
  .flow-step { padding: 24px; }
  .process-layout { padding: 26px 20px; }
  .cta-panel { padding: 28px 20px; }
  .cta-left h2 { font-size: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .data-strip { grid-template-columns: 1fr 1fr; gap: 12px; }
  .data-card .num { font-size: 24px; }
  .service-layout { gap: 24px; }
  .feature-item { padding: 20px; }
  .scenario-card { flex-direction: column; text-align: center; align-items: center; }
  .scenario-card .s-icon { margin-bottom: 6px; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; }
}

/* roulang page: article */
:root {
  --bg: #081120;
  --bg-soft: #0d1b2e;
  --primary: #00D1FF;
  --primary-2: #0096FF;
  --accent: #FF8A2A;
  --success: #29CC6B;
  --danger: #FF5A5F;
  --white: #ffffff;
  --text: #eaf4ff;
  --text-weak: rgba(255,255,255,.6);
  --border: rgba(255,255,255,.12);
  --glass: rgba(255,255,255,.06);
  --radius-xl: 24px;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow: 0 8px 32px rgba(0,0,0,.35);
  --spacer: 80px;
  --spacer-md: 64px;
  --spacer-sm: 48px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  position: relative;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background:
    radial-gradient(circle at 12% 8%, rgba(0,209,255,.16), transparent 34%),
    radial-gradient(circle at 88% 22%, rgba(0,150,255,.10), transparent 30%),
    radial-gradient(circle at 45% 78%, rgba(255,138,42,.06), transparent 32%);
}
a { color: var(--primary); text-decoration: none; transition: color .3s, border-color .3s, box-shadow .3s; }
a:hover { color: #8feaff; text-decoration: none; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; margin: 0; padding: 0; }
button, input, textarea { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
body .grid-container { max-width: 1200px; padding-left: 24px; padding-right: 24px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  padding: 12px 22px;
  min-height: 44px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all .25s ease;
  line-height: 1.2;
}
.btn-primary {
  background: linear-gradient(135deg, #00D1FF, #0096FF);
  color: #081120;
  box-shadow: 0 4px 16px rgba(0,209,255,.25);
}
.btn-primary:hover {
  color: #081120;
  transform: translateY(-2px);
  box-shadow: 0 0 24px rgba(0,209,255,.55);
}
.btn-primary:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn-primary:active {
  transform: translateY(1px);
}
.btn-ghost {
  background: transparent;
  border-color: rgba(0,209,255,.35);
  color: var(--primary);
}
.btn-ghost:hover {
  background: rgba(0,209,255,.08);
  border-color: var(--primary);
  box-shadow: 0 0 18px rgba(0,209,255,.3);
  color: #fff;
  transform: translateY(-2px);
}
.btn-ghost:focus {
  outline: 2px solid rgba(0,209,255,.5);
  outline-offset: 2px;
}
.btn-ghost:active {
  transform: translateY(1px);
}
.btn-accent {
  background: linear-gradient(135deg, #FF8A2A, #ff6a00);
  color: #081120;
  box-shadow: 0 4px 14px rgba(255,138,42,.3);
}
.btn-accent:hover {
  color: #081120;
  transform: translateY(-2px);
  box-shadow: 0 0 24px rgba(255,138,42,.5);
}
.btn-accent:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.btn-block { width: 100%; }
.btn-sm { padding: 8px 14px; font-size: 13px; min-height: 38px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 13px;
  background: rgba(0,209,255,.12);
  border: 1px solid rgba(0,209,255,.22);
  color: #9ae8ff;
}
.badge-outline {
  background: transparent;
  border-color: rgba(255,255,255,.18);
  color: var(--text-weak);
}
.badge-accent {
  background: rgba(255,138,42,.14);
  border-color: rgba(255,138,42,.26);
  color: #ffc08c;
}

.glass-card {
  background: var(--glass);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  position: relative;
}
.glass-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 6%;
  right: 6%;
  height: 1px;
  background: linear-gradient(90deg, rgba(255,255,255,.65), transparent);
  border-radius: 50%;
}

.glass-card > * { position: relative; z-index: 1; }

.site-header {
  padding: 18px 0 0;
  position: relative;
  z-index: 30;
}
.nav-card {
  display: flex;
  align-items: center;
  gap: 28px;
  background: rgba(255,255,255,.06);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 12px 20px;
  box-shadow: var(--shadow);
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: linear-gradient(135deg, #00D1FF, #0096FF);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 800;
  color: #081120;
  box-shadow: 0 0 18px rgba(0,209,255,.35);
}
.brand-text {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  line-height: 1.15;
}
.brand-text small {
  display: block;
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 3px;
  color: rgba(255,255,255,.5);
  margin-top: 2px;
}
.nav-brand-desk { display: flex; }
.title-bar { display: none; }
.nav-desktop {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}
.nav-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 12px;
  text-decoration: none;
  color: #bdd3e8;
  font-weight: 500;
  font-size: 15px;
  transition: all .25s ease;
  border: 1px solid transparent;
}
.nav-pill i { font-size: 16px; }
.nav-pill:hover {
  color: #fff;
  background: rgba(0,209,255,.1);
  border-color: rgba(0,209,255,.2);
  transform: translateY(-2px);
}
.nav-pill.active {
  background: linear-gradient(135deg, #00D1FF, #0096FF);
  color: #081120;
  font-weight: 700;
  box-shadow: 0 0 18px rgba(0,209,255,.35);
  border-color: transparent;
}
.nav-cta-desk { flex-shrink: 0; }
.mobile-toggle { display: none; }
.mobile-nav { display: none; }

.article-hero {
  padding: 60px 0 28px;
}
.article-hero-inner {
  padding: 40px 48px;
  border-radius: var(--radius-xl);
  overflow: hidden;
}
.article-head-flex {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  align-items: flex-start;
}
.article-head-main { flex: 1; min-width: 0; }
.article-head-side {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 44px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--text-weak);
  margin-bottom: 18px;
}
.crumb-link { color: var(--primary); }
.crumb-link:hover { color: #fff; }
.crumb-sep { opacity: .5; }
.crumb-current {
  max-width: 280px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: rgba(255,255,255,.8);
}
.article-title {
  font-size: 38px;
  line-height: 1.25;
  font-weight: 800;
  color: #fff;
  margin: 0 0 16px;
  letter-spacing: -0.01em;
  word-break: break-word;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin-bottom: 14px;
}
.meta-divider {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: rgba(255,255,255,.35);
}
.article-summary {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-weak);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-body-wrap {
  padding: 24px 0 0;
}
.article-cover {
  margin: 0 0 28px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  aspect-ratio: 16 / 7;
  background: rgba(255,255,255,.05);
  border: 1px solid var(--border);
}
.article-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.article-cover .img-fallback {
  display: none;
  position: absolute;
  inset: 0;
  align-items: center;
  justify-content: center;
  font-size: 64px;
  font-weight: 800;
  color: rgba(255,255,255,.22);
  background: linear-gradient(135deg, rgba(255,255,255,.06), rgba(255,255,255,.01));
}
.article-cover.img-missing img { display: none; }
.article-cover.img-missing .img-fallback { display: flex; }

.article-content {
  padding: 40px 48px;
  margin-bottom: 24px;
  border-radius: var(--radius-xl);
  overflow: hidden;
}
.cms-content > *:first-child { margin-top: 0; }
.cms-content h2 {
  font-size: 26px;
  font-weight: 800;
  color: #fff;
  margin: 40px 0 16px;
  line-height: 1.3;
}
.cms-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: #eaf4ff;
  margin: 32px 0 12px;
  line-height: 1.4;
}
.cms-content h4 {
  font-size: 18px;
  font-weight: 600;
  color: #d7ebff;
  margin: 24px 0 10px;
}
.cms-content p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.75;
  color: rgba(255,255,255,.82);
}
.cms-content a {
  color: var(--primary);
  text-decoration: underline;
}
.cms-content a:hover { color: #fff; }
.cms-content ul,
.cms-content ol {
  margin: 0 0 18px 20px;
}
.cms-content ul { list-style: disc; }
.cms-content ol { list-style: decimal; }
.cms-content li {
  margin-bottom: 8px;
  color: rgba(255,255,255,.8);
}
.cms-content blockquote {
  margin: 24px 0;
  padding: 16px 24px;
  background: rgba(0,209,255,.08);
  border-left: 3px solid var(--primary);
  border-radius: 0 12px 12px 0;
  color: rgba(255,255,255,.85);
}
.cms-content pre {
  background: rgba(0,0,0,.35);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 12px;
  padding: 18px 20px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.6;
  margin: 24px 0;
}
.cms-content code {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  background: rgba(255,255,255,.08);
  padding: 2px 6px;
  border-radius: 6px;
  font-size: .9em;
}
.cms-content pre code {
  background: transparent;
  padding: 0;
}
.cms-content img {
  border-radius: 12px;
  margin: 20px 0;
}
.cms-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
}
.cms-content th,
.cms-content td {
  padding: 10px 14px;
  border: 1px solid rgba(255,255,255,.1);
  text-align: left;
  font-size: 15px;
}
.cms-content th {
  background: rgba(255,255,255,.06);
  color: #fff;
  font-weight: 600;
}
.cms-content hr {
  border: none;
  border-top: 1px solid rgba(255,255,255,.08);
  margin: 32px 0;
}

.empty-article {
  padding: 70px 40px;
  text-align: center;
  border-radius: var(--radius-xl);
  overflow: hidden;
}
.empty-article i {
  font-size: 44px;
  color: rgba(255,255,255,.22);
  margin-bottom: 16px;
}
.empty-article p {
  font-size: 18px;
  color: rgba(255,255,255,.7);
  margin: 0 0 24px;
}

.back-entry {
  text-align: center;
  margin: 24px 0 48px;
}
.text-link {
  color: var(--primary);
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all .3s;
}
.text-link:hover {
  color: #fff;
  gap: 12px;
}

.related-section {
  padding: 64px 0 32px;
}
.section-head {
  text-align: center;
  margin-bottom: 40px;
}
.section-head h2 {
  font-size: 30px;
  font-weight: 800;
  color: #fff;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}
.section-head p {
  color: var(--text-weak);
  font-size: 15px;
  margin: 0;
}
.related-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 24px;
  background: rgba(255,255,255,.06);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition: all .3s ease;
  position: relative;
  overflow: hidden;
}
.related-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 16%;
  right: 16%;
  height: 1px;
  background: linear-gradient(90deg, rgba(255,255,255,.55), transparent);
}
.related-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0,209,255,.5);
  box-shadow: 0 8px 32px rgba(0,0,0,.35), 0 0 24px rgba(0,209,255,.12);
}
.related-card .badge {
  align-self: flex-start;
  margin-bottom: 14px;
}
.related-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin: 0 0 10px;
  color: #fff;
  line-height: 1.4;
}
.related-card h3 a { color: inherit; }
.related-card h3 a:hover { color: var(--primary); }
.related-card p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-weak);
  margin: 0 0 16px;
  flex: 1;
}
.related-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 14px;
}
.related-time {
  font-size: 13px;
  color: rgba(255,255,255,.4);
}
.related-link {
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.related-link:hover { color: #fff; }

.cta-strip {
  padding: 32px 0 80px;
}
.cta-strip-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 32px 36px;
  border-radius: var(--radius-xl);
  overflow: hidden;
}
.cta-strip-inner h3 {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 6px;
  color: #fff;
}
.cta-strip-inner p {
  margin: 0;
  color: var(--text-weak);
  font-size: 15px;
}
.cta-actions {
  display: flex;
  gap: 12px;
  flex-shrink: 0;
}

.site-footer {
  border-top: 1px solid rgba(255,255,255,.06);
  background: rgba(0,0,0,.3);
  padding: 56px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-weak);
  margin: 16px 0 0;
  max-width: 300px;
  line-height: 1.7;
}
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 18px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col a {
  color: rgba(255,255,255,.6);
  font-size: 14px;
  transition: color .3s;
}
.footer-col a:hover {
  color: var(--primary);
}
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,.55);
  font-size: 14px;
  margin-bottom: 12px;
}
.footer-contact i {
  width: 18px;
  text-align: center;
  color: var(--primary);
}
.footer-copy {
  border-top: 1px solid rgba(255,255,255,.06);
  padding-top: 20px;
  text-align: center;
  color: rgba(255,255,255,.4);
  font-size: 13px;
}
.footer-copy a {
  color: rgba(255,255,255,.4);
  transition: color .3s;
}
.footer-copy a:hover { color: var(--primary); }

@media (max-width: 1023px) {
  .nav-card { gap: 16px; }
  .nav-desktop { gap: 6px; }
  .nav-pill { padding: 8px 12px; font-size: 14px; }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 767px) {
  .site-header { padding: 12px 0 0; }
  .nav-card {
    flex-wrap: wrap;
    gap: 12px;
    padding: 12px;
    border-radius: 16px;
  }
  .title-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
  }
  .nav-brand-desk { display: none; }
  .nav-desktop { display: none; }
  .nav-cta-desk { display: none; }
  .mobile-toggle {
    display: flex;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(255,255,255,.08);
    border: 1px solid var(--border);
    color: #fff;
    font-size: 18px;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all .25s;
  }
  .mobile-toggle:hover {
    border-color: var(--primary);
    color: var(--primary);
  }
  .mobile-toggle:focus {
    outline: 2px solid rgba(0,209,255,.5);
    outline-offset: 2px;
  }
  .mobile-nav {
    display: block;
    position: absolute;
    top: calc(100% - 4px);
    left: 16px;
    right: 16px;
    background: rgba(13,27,46,.96);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 16px;
    box-shadow: var(--shadow);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(-8px);
    transition: all .3s ease;
    z-index: 100;
  }
  .mobile-nav.open {
    max-height: 460px;
    opacity: 1;
    transform: translateY(0);
  }
  .mobile-nav .nav-pill {
    display: flex;
    padding: 12px;
    margin-bottom: 8px;
    color: #fff;
    border-radius: 12px;
  }
  .mobile-nav .nav-pill.active {
    background: linear-gradient(135deg, #00D1FF, #0096FF);
    color: #081120;
  }
  .mobile-nav .btn-block {
    margin-top: 12px;
  }
  .article-hero { padding: 36px 0 16px; }
  .article-hero-inner { padding: 24px 20px; border-radius: 16px; }
  .article-head-flex { flex-direction: column; gap: 16px; }
  .article-head-side { flex-direction: row; padding-top: 0; }
  .article-title { font-size: 26px; }
  .article-summary {
    -webkit-line-clamp: 4;
  }
  .article-content { padding: 24px 20px; border-radius: 16px; }
  .article-cover { aspect-ratio: 4 / 3; }
  .empty-article { padding: 50px 20px; }
  .related-section { padding: 48px 0 24px; }
  .section-head h2 { font-size: 24px; }
  .cta-strip { padding: 24px 0 56px; }
  .cta-strip-inner {
    flex-direction: column;
    text-align: center;
    padding: 24px 20px;
    border-radius: 16px;
  }
  .cta-actions {
    flex-direction: column;
    width: 100%;
  }
  .cta-actions .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .brand-text { font-size: 20px; }
}

/* roulang page: category2 */
/* ========== 设计变量 ========== */
:root {
  --bg: #081120;
  --bg-deep: #050b14;
  --primary: #00D1FF;
  --primary-deep: #0096FF;
  --accent: #FF8A2A;
  --ok: #2ECC71;
  --danger: #E74C3C;
  --text: #E8F0FA;
  --text-weak: #8FA3B8;
  --border: rgba(255,255,255,0.12);
  --glass: rgba(255,255,255,0.06);
  --glass-soft: rgba(255,255,255,0.03);
  --radius-card: 16px;
  --radius-btn: 12px;
  --radius-pill: 999px;
  --shadow: 0 8px 32px rgba(0,0,0,0.35);
  --space-section: clamp(48px, 8vw, 80px);
  --font-main: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

/* ========== Reset / Base ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  background-image:
    radial-gradient(ellipse 600px 300px at 20% 0%, rgba(0,209,255,0.08), transparent 60%),
    radial-gradient(ellipse 500px 280px at 85% 10%, rgba(0,150,255,0.06), transparent 55%),
    radial-gradient(ellipse 700px 400px at 50% 50%, rgba(0,180,255,0.04), transparent 65%);
  background-attachment: fixed;
}
a { color: var(--primary); text-decoration: none; transition: all 0.3s ease; }
a:hover { color: #66e4ff; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }

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

/* ========== 玻璃卡片 ========== */
.glass-card {
  background: var(--glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.glass-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 60%;
  background: linear-gradient(180deg, rgba(255,255,255,0.08), transparent);
  pointer-events: none;
  border-radius: var(--radius-card) var(--radius-card) 0 0;
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  font-weight: 700;
  font-size: 15px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  line-height: 1.4;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  color: var(--bg);
  box-shadow: 0 4px 16px rgba(0,209,255,0.28);
}
.btn-primary:hover {
  box-shadow: 0 0 24px rgba(0,209,255,0.55);
  transform: translateY(-2px);
  color: var(--bg);
}
.btn-outline {
  background: transparent;
  border-color: var(--primary);
  color: var(--primary);
}
.btn-outline:hover {
  border-color: var(--primary);
  box-shadow: 0 0 20px rgba(0,209,255,0.35);
  background: rgba(0,209,255,0.08);
  transform: translateY(-2px);
  color: var(--primary);
}
.btn-accent {
  background: linear-gradient(135deg, #FFB066, var(--accent));
  color: var(--bg);
  box-shadow: 0 4px 16px rgba(255,138,42,0.3);
}
.btn-accent:hover {
  box-shadow: 0 0 24px rgba(255,138,42,0.5);
  transform: translateY(-2px);
  color: var(--bg);
}
.btn-block { display: flex; width: 100%; }
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}
.btn:active { transform: translateY(1px); }

/* ========== Header / 导航 ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 16px 0 8px;
  background: rgba(8,17,32,0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.nav-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(255,255,255,0.055);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 20px;
  padding: 10px 14px;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.28);
}
.brand-logo { display: flex; align-items: center; gap: 10px; }
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  color: var(--bg);
  font-weight: 800;
  font-size: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0,209,255,0.4);
  flex-shrink: 0;
}
.brand-text {
  font-weight: 800;
  font-size: 18px;
  color: var(--text);
  line-height: 1.2;
  letter-spacing: 0.5px;
}
.brand-text small {
  display: block;
  font-size: 11px;
  font-weight: 400;
  color: var(--text-weak);
  letter-spacing: 2px;
}
.nav-brand-desk { display: none; }
.title-bar { display: flex; align-items: center; justify-content: space-between; flex: 1; }
.mobile-toggle {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  width: 40px; height: 40px;
  border-radius: 10px;
  font-size: 18px;
  cursor: pointer;
  transition: all 0.3s;
}
.mobile-toggle:hover { border-color: var(--primary); color: var(--primary); }

.nav-desktop {
  display: none;
  align-items: center;
  gap: 6px;
  flex: 1;
  justify-content: center;
}
.nav-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 14px;
  color: var(--text);
  background: transparent;
  border: 1px solid transparent;
  transition: all 0.3s ease;
  text-decoration: none;
}
.nav-pill i { font-size: 14px; opacity: 0.85; }
.nav-pill:hover {
  color: var(--primary);
  border-color: rgba(0,209,255,0.4);
  background: rgba(0,209,255,0.06);
  transform: translateY(-2px);
}
.nav-pill.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  color: var(--bg);
  border-color: transparent;
  box-shadow: 0 4px 16px rgba(0,209,255,0.35);
}
.nav-cta-desk { display: none; }

/* 移动端导航面板 */
.mobile-nav {
  display: none;
  flex-direction: column;
  gap: 8px;
  padding: 16px 18px;
  margin-top: 10px;
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: 16px;
}
.mobile-nav.open { display: flex; }
.mobile-nav .nav-pill { padding: 12px 16px; font-size: 15px; }
.mobile-nav .btn { margin-top: 6px; }

/* ========== Hero ========== */
.page-hero {
  position: relative;
  padding: clamp(56px, 10vw, 100px) 0 clamp(48px, 7vw, 80px);
  background-image: linear-gradient(180deg, rgba(8,17,32,0.72), rgba(8,17,32,0.88)), url("/assets/images/backpic/back-2.png");
  background-size: cover;
  background-position: center;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  top: 30%; left: 10%;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(0,209,255,0.2), transparent 70%);
  pointer-events: none;
}
.page-hero .hero-inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}
.page-hero h1 {
  font-size: clamp(34px, 5vw, 44px);
  font-weight: 800;
  line-height: 1.25;
  color: var(--text);
  letter-spacing: 1px;
  margin-bottom: 20px;
}
.page-hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--primary), #66e4ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.page-hero p.hero-sub {
  font-size: 16px;
  color: var(--text-weak);
  line-height: 1.75;
  max-width: 620px;
  margin: 0 auto 32px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-scroll {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-weak);
  font-size: 20px;
  animation: floatdown 2s ease-in-out infinite;
}
@keyframes floatdown {
  0%, 100% { transform: translate(-50%, 0); opacity: 0.6; }
  50% { transform: translate(-50%, 8px); opacity: 1; }
}

/* ========== 锚点导航 ========== */
.anchor-bar {
  background: rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding: 14px 0;
  position: sticky;
  top: 78px;
  z-index: 90;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.anchor-bar .container {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}
.anchor-bar a {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-weak);
  border: 1px solid transparent;
  transition: all 0.3s;
}
.anchor-bar a:hover {
  color: var(--primary);
  border-color: rgba(0,209,255,0.3);
  background: rgba(0,209,255,0.05);
}

/* ========== 通用 Section ========== */
.section { padding: var(--space-section) 0; position: relative; }
.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}
.section-tag {
  display: inline-block;
  padding: 5px 16px;
  background: rgba(0,209,255,0.12);
  border: 1px solid rgba(0,209,255,0.3);
  color: var(--primary);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 12px;
}
.section-head h2 {
  font-size: clamp(24px, 3.5vw, 32px);
  font-weight: 800;
  color: var(--text);
  line-height: 1.3;
  margin-bottom: 12px;
}
.section-head p {
  color: var(--text-weak);
  font-size: 15px;
}

/* ========== 合作模式 ========== */
.section-modes {
  background-image: radial-gradient(ellipse 500px 300px at 70% 20%, rgba(0,150,255,0.08), transparent 65%);
}
.modes-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  max-width: 1100px;
  margin: 0 auto;
}
.mode-card {
  padding: 28px 26px;
  transition: all 0.35s ease;
}
.mode-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0,209,255,0.5);
  box-shadow: 0 0 28px rgba(0,209,255,0.15), var(--shadow);
}
.mode-icon {
  width: 52px; height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(0,209,255,0.2), rgba(0,150,255,0.1));
  border: 1px solid rgba(0,209,255,0.3);
  border-radius: 14px;
  color: var(--primary);
  font-size: 22px;
  margin-bottom: 20px;
}
.mode-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}
.mode-card p {
  color: var(--text-weak);
  font-size: 14px;
  line-height: 1.75;
  margin-bottom: 16px;
}
.mode-card ul li {
  position: relative;
  padding-left: 20px;
  color: var(--text);
  font-size: 14px;
  margin-bottom: 8px;
}
.mode-card ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 8px; height: 8px;
  background: var(--primary);
  border-radius: 50%;
  opacity: 0.7;
}

@media (min-width: 1024px) {
  .modes-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ========== 合作流程 ========== */
.section-flow {
  background-image: radial-gradient(ellipse 600px 320px at 20% 50%, rgba(0,209,255,0.05), transparent 60%);
}
.flow-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  max-width: 1100px;
  margin: 0 auto;
  align-items: center;
}
.flow-steps {
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: relative;
}
.flow-steps::before {
  content: "";
  position: absolute;
  left: 24px; top: 40px; bottom: 40px;
  width: 2px;
  background: linear-gradient(180deg, rgba(0,209,255,0.5), rgba(0,150,255,0.1));
}
.flow-step {
  display: flex;
  gap: 20px;
  padding: 20px 24px;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  position: relative;
  transition: all 0.3s;
}
.flow-step:hover {
  border-color: rgba(0,209,255,0.4);
  transform: translateX(4px);
}
.step-num {
  flex-shrink: 0;
  width: 48px; height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  color: var(--bg);
  font-weight: 800;
  font-size: 16px;
  border-radius: 50%;
  font-family: monospace;
  box-shadow: 0 4px 12px rgba(0,209,255,0.35);
  z-index: 1;
}
.flow-step h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}
.flow-step p { color: var(--text-weak); font-size: 14px; line-height: 1.6; }
.flow-image img {
  width: 100%;
  height: 100%;
  min-height: 240px;
  object-fit: cover;
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
@media (min-width: 1024px) {
  .flow-layout { grid-template-columns: 5fr 4fr; }
}

/* ========== 合作权益 ========== */
.section-benefits {
  background-image: radial-gradient(ellipse 500px 250px at 85% 50%, rgba(255,138,42,0.06), transparent 60%);
}
.benefits-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  max-width: 1100px;
  margin: 0 auto;
  align-items: center;
}
.benefit-img img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}
.stat-card {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 14px;
  text-align: center;
  transition: all 0.3s;
}
.stat-card:hover { border-color: rgba(255,138,42,0.4); }
.stat-num {
  display: block;
  font-size: 28px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
  margin-bottom: 4px;
}
.stat-label {
  font-size: 12px;
  color: var(--text-weak);
}
.benefit-list {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 8px 20px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.benefit-item {
  display: flex;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  align-items: flex-start;
}
.benefit-item:last-child { border-bottom: none; }
.benefit-item i {
  color: var(--primary);
  font-size: 20px;
  margin-top: 2px;
}
.benefit-item h4 { font-size: 16px; font-weight: 700; color: var(--text); margin-bottom: 2px; }
.benefit-item p { font-size: 13px; color: var(--text-weak); line-height: 1.6; }
@media (min-width: 1024px) {
  .benefits-grid { grid-template-columns: 5fr 6fr; }
}

/* ========== FAQ ========== */
.section-faq {
  background-image: radial-gradient(ellipse 500px 300px at 20% 80%, rgba(0,150,255,0.05), transparent 60%);
}
.faq-wrap {
  max-width: 780px;
  margin: 0 auto;
}
.accordion { list-style: none; margin: 0; background: transparent !important; border: none !important; }
.accordion-item {
  background: rgba(255,255,255,0.05) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.1) !important;
  border-radius: 14px !important;
  margin-bottom: 14px;
  overflow: hidden;
  transition: all 0.3s;
}
.accordion-item.is-active {
  border-color: rgba(0,209,255,0.45) !important;
  background: rgba(255,255,255,0.08) !important;
  box-shadow: 0 0 24px rgba(0,209,255,0.1);
}
.accordion-title {
  background: transparent !important;
  border: none !important;
  color: var(--text) !important;
  font-size: 16px !important;
  font-weight: 600;
  padding: 18px 20px 18px 46px !important;
  position: relative !important;
  line-height: 1.5 !important;
  display: block;
  min-height: 54px;
  cursor: pointer;
}
.accordion-title::before {
  content: "+";
  position: absolute;
  left: 16px; top: 50%;
  transform: translateY(-50%);
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  transition: transform 0.3s;
}
.accordion-title:hover { color: var(--primary) !important; }
.accordion-item.is-active .accordion-title::before {
  content: "×";
  transform: translateY(-50%) rotate(0deg);
}
.accordion-content {
  background: transparent !important;
  border: none !important;
  padding: 0 20px 18px 46px !important;
  color: var(--text-weak) !important;
  font-size: 14px;
  line-height: 1.75;
}

/* ========== CTA 表单区 ========== */
.section-cta { padding-top: 0; }
.cta-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  background: linear-gradient(150deg, rgba(255,255,255,0.07), rgba(255,255,255,0.03));
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 40px 32px;
  max-width: 1000px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
}
.cta-panel::before {
  content: "";
  position: absolute;
  top: -80px; right: -80px;
  width: 240px; height: 240px;
  background: radial-gradient(circle, rgba(0,209,255,0.18), transparent 70%);
  pointer-events: none;
}
.cta-form-wrap h2 {
  font-size: 24px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 8px;
}
.cta-form-wrap > p {
  color: var(--text-weak);
  font-size: 14px;
  margin-bottom: 20px;
}
.form-group { margin-bottom: 14px; }
.form-control {
  width: 100%;
  padding: 12px 14px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 10px;
  color: var(--text);
  transition: all 0.3s;
  line-height: 1.5;
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0,209,255,0.15);
}
.form-control::placeholder { color: rgba(255,255,255,0.4); }
select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%2300D1FF' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}
select.form-control option { background: #0f1e33; color: var(--text); }
.form-error {
  color: var(--danger);
  font-size: 13px;
  margin-top: 6px;
  display: none;
}
.form-error.show { display: block; }
.form-control.error {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(231,76,60,0.15);
}
.form-success {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  background: rgba(46,204,113,0.12);
  border: 1px solid rgba(46,204,113,0.35);
  border-radius: 10px;
  color: var(--ok);
  font-size: 14px;
  margin-top: 12px;
}
.form-success.show { display: flex; }
.cta-trust {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  padding: 24px;
}
.cta-trust h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
}
.cta-trust ul li {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 10px 0;
  color: var(--text-weak);
  font-size: 14px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.cta-trust ul li:last-child { border-bottom: none; }
.cta-trust ul li i {
  color: var(--primary);
  font-size: 16px;
}
@media (min-width: 1024px) {
  .cta-panel { grid-template-columns: 7fr 5fr; padding: 44px 40px; }
}

/* ========== Footer ========== */
.site-footer {
  margin-top: var(--space-section);
  background: rgba(4,10,18,0.9);
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 56px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-bottom: 32px;
}
.footer-brand p {
  color: var(--text-weak);
  font-size: 14px;
  margin-top: 14px;
  max-width: 320px;
  line-height: 1.7;
}
.footer-col h4 {
  color: var(--text);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 14px;
}
.footer-col ul li {
  margin-bottom: 8px;
}
.footer-col ul li a {
  color: var(--text-weak);
  font-size: 14px;
  transition: all 0.3s;
}
.footer-col ul li a:hover { color: var(--primary); padding-left: 4px; }
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-weak);
  font-size: 14px;
}
.footer-contact li i { color: var(--primary); }
.footer-copy {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 20px;
  text-align: center;
  color: var(--text-weak);
  font-size: 13px;
}
.footer-copy a { color: var(--text-weak); }
.footer-copy a:hover { color: var(--primary); }
@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; gap: 20px; }
}

/* ========== 响应式断点 ========== */
@media (min-width: 768px) {
  .title-bar { flex: 0 0 auto; }
  .mobile-toggle { display: none; }
  .nav-card { flex-wrap: nowrap; }
  .nav-brand-desk { display: block; margin-right: 8px; }
  .nav-desktop { display: flex; }
  .nav-cta-desk { display: block; }
  .mobile-nav { display: none !important; }
  .modes-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 767px) {
  .container { padding: 0 18px; }
  .nav-card { flex-wrap: wrap; padding: 10px 12px; }
  .title-bar { flex: 1; }
  .page-hero h1 { font-size: 30px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .anchor-bar { top: 0; position: static; }
  .anchor-bar .container { gap: 4px; }
  .anchor-bar a { font-size: 13px; padding: 5px 12px; }
  .flow-steps::before { left: 19px; }
  .step-num { width: 40px; height: 40px; font-size: 14px; }
  .flow-step { padding: 16px; gap: 14px; }
  .cta-panel { padding: 28px 20px; }
  .stat-grid { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .stat-num { font-size: 22px; }
  .stat-card { padding: 12px 8px; }
}

@media (max-width: 520px) {
  .brand-text { font-size: 16px; }
  .brand-text small { font-size: 10px; }
  .brand-mark { width: 34px; height: 34px; font-size: 17px; }
  .nav-pill { padding: 8px 12px; font-size: 13px; }
  .page-hero h1 { font-size: 27px; }
  .page-hero p.hero-sub { font-size: 14px; }
  .section-head h2 { font-size: 22px; }
  .mode-card { padding: 22px 18px; }
  .benefit-img img { height: 220px; }
  .accordion-title { font-size: 14px !important; padding: 16px 14px 16px 42px !important; }
  .accordion-content { padding: 0 14px 16px 42px !important; font-size: 13px !important; }
}