/* roulang page: index */
:root {
  --bg-body: #F5F8FC;
  --bg-section-light: #FFFFFF;
  --bg-section-soft: #EDF3FB;
  --bg-dark: #071426;
  --bg-dark-2: #0A1B36;
  --bg-dark-3: #10264E;
  --primary: #0B6CFF;
  --primary-deep: #084ACB;
  --accent-cyan: #18C8FF;
  --accent-lime: #D7FF32;
  --success-mint: #2CF5AE;
  --warning: #FF8A4C;
  --danger: #FF5D5D;
  --text-primary: #10233F;
  --text-secondary: #42566F;
  --text-muted: #7D90A7;
  --text-on-dark: #EAF2FF;
  --border-light: #DCE6F2;
  --border-dark-soft: rgba(255, 255, 255, 0.14);
  --glass-bg: rgba(255, 255, 255, 0.08);
  --glass-bg-strong: rgba(255, 255, 255, 0.14);
  --glass-border: rgba(255, 255, 255, 0.18);
  --glass-highlight: inset 0 1px 0 rgba(255, 255, 255, 0.3);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-pill: 999px;
  --shadow-card: 0 10px 30px rgba(7, 20, 38, 0.08);
  --shadow-card-hover: 0 18px 40px rgba(7, 20, 38, 0.12);
  --shadow-btn-glow: 0 10px 32px rgba(24, 200, 255, 0.35);
  --shadow-glass: 0 18px 48px rgba(0, 0, 0, 0.3);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg-body);
  color: var(--text-primary);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.menu-lock {
  overflow: hidden;
}

h1, h2, h3, h4, p, ul, ol, dl, dd, figure {
  margin: 0;
  padding: 0;
}

ul, ol {
  list-style: none;
}

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

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

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

button {
  border: 0;
  background: none;
  cursor: pointer;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  padding: 104px 0;
  position: relative;
}

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

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

.section-head {
  max-width: 780px;
  margin-bottom: 44px;
}

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  background: rgba(11, 108, 255, 0.08);
  border: 1px solid rgba(11, 108, 255, 0.15);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 650;
  letter-spacing: .04em;
  margin-bottom: 16px;
}

.section-head h2,
.section-dark .section-head h2 {
  font-size: clamp(28px, 3.5vw, 44px);
  line-height: 1.22;
  font-weight: 750;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.section-head p {
  margin-top: 14px;
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 680px;
  line-height: 1.8;
}

.section-dark .section-head h2 {
  color: var(--text-on-dark);
}

.section-dark .section-head p {
  color: rgba(234, 242, 255, 0.7);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 26px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 650;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: transform .24s cubic-bezier(.2,0,0,1), box-shadow .24s cubic-bezier(.2,0,0,1), background .24s cubic-bezier(.2,0,0,1), color .24s;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-deep) 100%);
  color: #fff;
  box-shadow: 0 10px 24px rgba(11, 108, 255, 0.28);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px rgba(11, 108, 255, 0.34);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 6px 18px rgba(11, 108, 255, 0.2);
}

.btn-ghost-light {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--glass-border);
  color: var(--text-on-dark);
  backdrop-filter: blur(10px);
  box-shadow: var(--glass-highlight);
}

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

.btn-ghost {
  background: transparent;
  border-color: var(--border-light);
  color: var(--text-primary);
}

.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(11, 108, 255, 0.04);
}

.btn-glow {
  background: linear-gradient(135deg, #18C8FF, #0B6CFF);
  color: #fff;
  box-shadow: var(--shadow-btn-glow);
}

.btn-glow:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 42px rgba(24, 200, 255, 0.48);
}

.btn-glow:active {
  transform: translateY(0);
  box-shadow: 0 8px 22px rgba(24, 200, 255, 0.3);
}

.btn-sm {
  height: 42px;
  padding: 0 20px;
  font-size: 14px;
}

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

.tag {
  display: inline-flex;
  align-items: center;
  width: max-content;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: rgba(11, 108, 255, 0.09);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.5;
}

.tag-primary {
  background: rgba(11, 108, 255, 0.1);
  color: var(--primary);
}

.tag-soft {
  background: var(--bg-section-soft);
  color: var(--text-secondary);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-light);
  transition: box-shadow .3s ease, background .3s ease;
}

.site-header.scrolled {
  box-shadow: 0 10px 28px rgba(7, 20, 38, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 72px;
}

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

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(145deg, var(--primary), var(--primary-deep));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 19px;
  box-shadow: 0 8px 22px rgba(11, 108, 255, 0.24);
}

.brand-name {
  font-size: 19px;
  font-weight: 750;
  letter-spacing: 0.02em;
  color: var(--text-primary);
}

.brand-name .brand-tail {
  color: var(--primary);
  font-weight: 650;
}

.navToggle {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.site-nav .nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
}

.site-nav .nav-link {
  position: relative;
  display: inline-flex;
  padding: 8px 2px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  transition: color .2s ease;
}

.site-nav .nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent-cyan));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .3s cubic-bezier(.2,0,0,1);
}

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

.site-nav .nav-link.active {
  color: var(--primary);
}

.site-nav .nav-link.active::after {
  transform: scaleX(1);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.search-box {
  display: flex;
  align-items: center;
  width: 236px;
  height: 42px;
  background: var(--bg-section-soft);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-pill);
  padding-left: 16px;
  overflow: hidden;
  transition: border-color .25s, box-shadow .25s, background .25s;
}

.search-box:focus-within {
  background: #fff;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(11, 108, 255, 0.1);
}

.search-box input {
  width: 100%;
  height: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text-primary);
  font-size: 14px;
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.search-box button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin: 1px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-pill);
  transition: background .2s ease;
}

.search-box button:hover {
  background: var(--primary-deep);
}

.hamburger {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--border-light);
  background: #fff;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
}

.hamburger span {
  width: 19px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform .3s, opacity .3s;
}

.navToggle:checked~.header-tools .hamburger span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.navToggle:checked~.header-tools .hamburger span:nth-child(2) {
  opacity: 0;
}

.navToggle:checked~.header-tools .hamburger span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.mobile-nav-extra {
  display: none;
}

.hero {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  background-color: var(--bg-dark);
  background-image: linear-gradient(100deg, rgba(7, 20, 38, 0.94) 4%, rgba(7, 20, 38, 0.76) 52%, rgba(7, 20, 38, 0.4) 100%), url("/assets/images/backpic/back-1.png");
  background-size: cover;
  background-position: center;
  overflow: hidden;
  padding: 96px 0;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 78% 28%, rgba(24, 200, 255, 0.16), transparent 28%), radial-gradient(circle at 18% 76%, rgba(11, 108, 255, 0.16), transparent 35%);
  pointer-events: none;
}

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

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  align-items: center;
  gap: 64px;
}

.hero-copy {
  color: var(--text-on-dark);
}

.hero-copy .hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent-cyan);
  font-size: 14px;
  font-weight: 650;
  letter-spacing: 0.05em;
  margin-bottom: 18px;
  background: rgba(24, 200, 255, 0.1);
  border: 1px solid rgba(24, 200, 255, 0.18);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
}

.hero-title {
  font-size: clamp(44px, 6vw, 68px);
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #fff;
  margin-bottom: 24px;
}

.hero-title .line-highlight {
  color: var(--accent-cyan);
}

.hero-lead {
  font-size: 18px;
  line-height: 1.8;
  color: rgba(234, 242, 255, 0.82);
  max-width: 620px;
  margin-bottom: 34px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-bottom: 36px;
}

.hero-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  max-width: 620px;
}

.hero-points li {
  position: relative;
  padding-left: 24px;
  font-size: 14px;
  color: rgba(234, 242, 255, 0.72);
  line-height: 1.6;
}

.hero-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success-mint);
  box-shadow: 0 0 0 4px rgba(44, 245, 174, 0.12);
}

.hero-card {
  background: rgba(10, 27, 54, 0.58);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 28px;
  padding: 30px 28px;
  color: var(--text-on-dark);
  backdrop-filter: blur(22px);
  box-shadow: var(--shadow-glass), inset 0 1px 0 rgba(255, 255, 255, 0.22);
  position: relative;
}

.hero-card::before {
  content: "";
  position: absolute;
  top: -1px;
  right: 30px;
  left: 30px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.7), transparent);
}

.hero-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 22px;
}

.hero-card-label {
  color: var(--accent-cyan);
  font-size: 13px;
  font-weight: 650;
  letter-spacing: .08em;
}

.hero-card-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: rgba(234, 242, 255, 0.66);
  font-size: 13px;
}

.hero-card-status i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success-mint);
  box-shadow: 0 0 0 4px rgba(44, 245, 174, 0.15);
}

.price-line {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 12px;
}

.price-line strong {
  font-size: 40px;
  line-height: 1;
  font-weight: 750;
  color: #fff;
  letter-spacing: -0.04em;
}

.price-line span {
  color: rgba(234, 242, 255, 0.66);
  font-size: 14px;
}

.hero-card p.hero-card-desc {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(234, 242, 255, 0.68);
  margin-bottom: 22px;
}

.hero-card .btn {
  width: 100%;
  margin-bottom: 20px;
}

.hero-feature-list li {
  position: relative;
  padding-left: 20px;
  color: rgba(234, 242, 255, 0.78);
  font-size: 14px;
  line-height: 1.75;
}

.hero-feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
}

.news-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 32px;
  align-items: start;
}

.news-feature {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: box-shadow .3s ease, transform .3s ease;
}

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

.news-feature-media {
  display: block;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--bg-section-soft);
}

.news-feature-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

.news-feature:hover .news-feature-media img {
  transform: scale(1.03);
}

.news-feature-body {
  padding: 26px 28px 28px;
}

.news-feature-body .tag {
  margin-bottom: 12px;
}

.news-feature-body h3 {
  font-size: 23px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.news-feature-body h3 a {
  transition: color .2s;
}

.news-feature-body h3 a:hover {
  color: var(--primary);
}

.news-feature-body p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 20px;
  color: var(--text-muted);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.read-more {
  color: var(--primary);
  font-weight: 600;
  transition: gap .2s;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.read-more:hover {
  gap: 9px;
}

.news-side {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.side-title {
  font-size: 15px;
  font-weight: 750;
  color: var(--text-primary);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-light);
  position: relative;
}

.side-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 56px;
  height: 2px;
  background: var(--primary);
}

.news-row {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: 0 6px 18px rgba(7, 20, 38, 0.04);
  transition: box-shadow .25s, transform .25s;
}

.news-row:hover {
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.news-row .tag {
  margin-bottom: 8px;
}

.news-row h3 {
  font-size: 16px;
  font-weight: 650;
  line-height: 1.55;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.news-row h3 a {
  transition: color .2s;
}

.news-row h3 a:hover {
  color: var(--primary);
}

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

.news-row .news-meta {
  margin-top: 10px;
  font-size: 13px;
}

.news-empty {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: #fff;
  border: 1px dashed var(--border-light);
  border-radius: var(--radius-lg);
  padding: 80px 24px;
  text-align: center;
  color: var(--text-muted);
}

.empty-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(11, 108, 255, 0.08);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}

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

.compare-wrap {
  position: relative;
}

.compare-hint {
  display: none;
  color: var(--text-muted);
  font-size: 13px;
  margin-bottom: 12px;
  gap: 6px;
  align-items: center;
}

.compare-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-lg);
}

.compare-table {
  width: 100%;
  min-width: 780px;
  border-collapse: separate;
  border-spacing: 0;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.compare-table th,
.compare-table td {
  padding: 18px 20px;
  text-align: center;
  border-bottom: 1px solid var(--border-light);
  font-size: 14px;
  vertical-align: middle;
}

.compare-table thead th {
  background: var(--bg-dark-2);
  color: var(--text-on-dark);
  font-weight: 650;
  line-height: 1.5;
  border-bottom-color: rgba(255, 255, 255, 0.08);
}

.compare-table thead th:first-child {
  border-top-left-radius: var(--radius-lg);
}

.compare-table thead th:last-child {
  border-top-right-radius: var(--radius-lg);
}

.compare-table tbody tr:last-child td {
  border-bottom: 0;
}

.compare-table th.table-col,
.compare-table td:first-child {
  background: var(--bg-section-soft);
  text-align: left;
  width: 26%;
  position: sticky;
  left: 0;
  z-index: 1;
  color: var(--text-primary);
  font-weight: 650;
}

.compare-table thead .table-col {
  z-index: 2;
  background: var(--bg-dark);
  color: var(--text-on-dark);
}

.compare-table td {
  color: var(--text-secondary);
}

.has-cell {
  color: var(--success-mint);
  font-weight: 700;
}

.partial-cell {
  color: var(--warning);
  font-weight: 650;
}

.no-cell {
  color: var(--text-muted);
}

.plan-recommend {
  position: relative;
}

.compare-table thead .plan-recommend {
  background: linear-gradient(180deg, var(--primary) 0%, var(--primary-deep) 100%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.2);
}

.plan-recommend-label {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-lime);
  color: #10233F;
  font-size: 12px;
  font-weight: 750;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
  letter-spacing: .02em;
  z-index: 3;
}

.compare-note {
  margin-top: 18px;
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.section-dark {
  background-color: var(--bg-dark);
  position: relative;
  overflow: hidden;
  color: var(--text-on-dark);
}

.section-dark::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 88% 16%, rgba(11, 108, 255, 0.21), transparent 28%),
    radial-gradient(circle at 10% 82%, rgba(24, 200, 255, 0.1), transparent 30%);
  pointer-events: none;
}

.section-dark::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse at center, transparent 8%, #000 100%);
  mask-image: radial-gradient(ellipse at center, transparent 8%, #000 100%);
  pointer-events: none;
}

.section-dark .container {
  position: relative;
  z-index: 2;
}

.level-track {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-items: center;
  gap: 22px;
  margin-top: 20px;
}

.level-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 28px 26px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(12px);
  transition: transform .3s ease, background .3s ease;
}

.level-card:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-5px);
}

.level-card.level-middle {
  transform: translateY(-16px);
  border-color: rgba(24, 200, 255, 0.5);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.28), 0 0 0 1px rgba(24, 200, 255, 0.25), inset 0 1px 0 rgba(255,255,255,.3);
}

.level-card.level-middle:hover {
  transform: translateY(-20px);
}

.level-num {
  color: var(--accent-cyan);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: .04em;
  display: block;
  margin-bottom: 8px;
}

.level-middle .level-num {
  color: var(--accent-lime);
}

.level-card h3 {
  color: #fff;
  font-size: 21px;
  font-weight: 700;
  margin-bottom: 8px;
}

.level-card p {
  color: rgba(234, 242, 255, 0.62);
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 20px;
}

.level-feature-list {
  display: grid;
  gap: 10px;
}

.level-feature-list li {
  color: rgba(234, 242, 255, 0.78);
  font-size: 14px;
  display: flex;
  gap: 8px;
  line-height: 1.6;
}

.level-feature-list li::before {
  content: "·";
  color: var(--accent-cyan);
  font-weight: 800;
}

.level-middle .level-feature-list li::before {
  color: var(--accent-lime);
}

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

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

.preview-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform .3s ease, box-shadow .3s ease;
}

.preview-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card-hover);
}

.preview-media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.preview-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

.preview-card:hover .preview-media img {
  transform: scale(1.04);
}

.preview-lock {
  position: absolute;
  top: 14px;
  right: 14px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(7, 20, 38, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 11px;
  border-radius: var(--radius-pill);
  backdrop-filter: blur(10px);
  z-index: 2;
}

.preview-veil {
  position: absolute;
  inset: 0;
  background: rgba(7, 20, 38, 0.08);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity .3s ease;
}

.preview-card:hover .preview-veil {
  opacity: 1;
}

.preview-veil span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 18px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.24);
  color: #fff;
  font-size: 13px;
  font-weight: 650;
  box-shadow: var(--glass-highlight);
  backdrop-filter: blur(8px);
}

.preview-body {
  padding: 20px 20px 22px;
}

.preview-body .tag {
  margin-bottom: 8px;
}

.preview-body h3 {
  font-size: 17px;
  line-height: 1.55;
  font-weight: 680;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.preview-body p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.preview-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-muted);
  font-size: 13px;
  margin-top: 16px;
  font-variant-numeric: tabular-nums;
}

.preview-meta .file-type {
  color: var(--text-secondary);
  font-weight: 600;
}

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

.faq-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  align-items: start;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow .25s ease;
}

.faq-item[open] {
  box-shadow: var(--shadow-card);
}

.faq-item summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 650;
  transition: color .2s;
}

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

.faq-item summary::after {
  content: "+";
  margin-left: auto;
  font-size: 24px;
  line-height: 1;
  color: var(--primary);
  font-weight: 400;
  transition: transform .3s ease, color .3s ease;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
  color: var(--primary);
}

.faq-item summary:hover {
  color: var(--primary);
}

.faq-answer {
  border-top: 1px solid var(--border-light);
  padding: 4px 20px 18px;
  color: var(--text-secondary);
  background: rgba(245, 248, 252, 0.35);
}

.faq-answer p {
  font-size: 14px;
  line-height: 1.85;
  margin-top: 14px;
}

.section-cta {
  background-color: var(--bg-dark-2);
  background-image:
    radial-gradient(circle at 12% 30%, rgba(11, 108, 255, 0.28), transparent 32%),
    radial-gradient(circle at 88% 20%, rgba(24, 200, 255, 0.18), transparent 25%);
  padding: 110px 0;
  position: relative;
  overflow: hidden;
}

.section-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(circle at center, #000, transparent 78%);
  mask-image: radial-gradient(circle at center, #000, transparent 78%);
}

.cta-box {
  position: relative;
  z-index: 1;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 58px 60px;
  box-shadow: var(--shadow-glass), inset 0 1px 0 rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(14px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}

.cta-box h2 {
  color: #fff;
  font-size: clamp(28px, 3.4vw, 44px);
  line-height: 1.3;
  font-weight: 750;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.cta-box .cta-copy p {
  color: rgba(234, 242, 255, 0.7);
  font-size: 16px;
  max-width: 620px;
  line-height: 1.8;
}

.cta-box .cta-note {
  color: rgba(234, 242, 255, 0.46);
  font-size: 13px;
  margin-top: 16px;
}

.cta-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex-shrink: 0;
}

.site-footer {
  background: #040B16;
  color: #A9BED8;
  padding-top: 68px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr 0.9fr 1fr;
  gap: 44px;
  padding-bottom: 52px;
}

.footer-brand .brand-name {
  color: #fff;
}

.footer-brand .brand-name .brand-tail {
  color: var(--accent-cyan);
}

.footer-brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: linear-gradient(145deg, var(--primary), var(--primary-deep));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 17px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.85;
  margin-top: 18px;
  color: rgba(169, 190, 216, 0.76);
  max-width: 360px;
}

.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
}

.footer-col ul li {
  margin-bottom: 11px;
}

.footer-col ul li a {
  color: rgba(169, 190, 216, 0.82);
  font-size: 14px;
  transition: color .2s ease;
}

.footer-col ul li a:hover {
  color: var(--accent-cyan);
}

.footer-contact li {
  font-size: 14px;
  color: rgba(169, 190, 216, 0.82);
  margin-bottom: 12px;
}

.footer-contact a.contact-phone {
  color: #fff;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .03em;
  font-variant-numeric: tabular-nums;
}

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

.footer-contact small {
  display: block;
  font-size: 13px;
  color: rgba(169, 190, 216, 0.52);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  color: rgba(169, 190, 216, 0.5);
  font-size: 13px;
}

.footer-bottom span {
  font-variant-numeric: tabular-nums;
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 6px;
}

@media (max-width: 1200px) {
  .section {
    padding: 88px 0;
  }
}

@media (min-width: 1024px) {
  .site-nav {
    display: block;
    position: static;
    transform: none;
    visibility: visible;
    background: transparent;
    width: auto;
    box-shadow: none;
  }
  .site-nav .mobile-search,
  .site-nav .mobile-cta-btn,
  .site-nav .mobile-cta {
    display: none;
  }
}

@media (max-width: 1023px) {
  .header-inner {
    height: 60px;
  }
  .hamburger {
    display: inline-flex;
  }
  .header-cta-btn,
  .header-tools .search-box {
    display: none;
  }
  .site-nav {
    position: fixed;
    top: 60px;
    left: auto;
    right: 0;
    width: min(430px, 90vw);
    height: calc(100vh - 60px);
    background: #fff;
    box-shadow: -18px 0 46px rgba(7, 20, 38, 0.18);
    padding: 28px 28px 34px;
    overflow-y: auto;
    transform: translateX(105%);
    visibility: hidden;
    transition: transform .32s cubic-bezier(.2, 0, 0, 1), visibility .32s;
    z-index: 101;
    border-left: 1px solid var(--border-light);
  }
  .navToggle:checked~.site-nav {
    transform: translateX(0);
    visibility: visible;
  }
  .site-nav .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    margin-bottom: 24px;
  }
  .site-nav .nav-link {
    display: block;
    padding: 14px 0;
    font-size: 17px;
    border-bottom: 1px solid var(--border-light);
  }
  .site-nav .nav-link.active {
    color: var(--primary);
  }
  .site-nav .nav-link.active::after {
    display: none;
  }
  .mobile-search {
    display: flex;
    margin-bottom: 20px;
  }
  .mobile-cta {
    display: flex;
    width: 100%;
    margin-top: 10px;
  }
  .mobile-search .search-box,
  .mobile-search {
    width: 100%;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-card {
    max-width: 600px;
  }
  .level-track {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }
  .level-card.level-middle {
    transform: none;
    grid-column: 1 / -1;
    order: -1;
  }
  .level-card.level-middle:hover {
    transform: translateY(-4px);
  }
  .preview-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .faq-layout {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .section {
    padding: 64px 0;
  }
  .container {
    padding-left: 18px;
    padding-right: 18px;
  }
  .hero {
    min-height: auto;
    padding: 72px 0 64px;
  }
  .hero-grid {
    gap: 32px;
  }
  .hero-title {
    font-size: 38px;
  }
  .hero-lead {
    font-size: 16px;
  }
  .hero-points {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-card {
    padding: 24px 20px;
  }
  .news-layout {
    grid-template-columns: 1fr;
  }
  .news-feature-body {
    padding: 20px;
  }
  .news-feature-body h3 {
    font-size: 20px;
  }
  .news-side {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .compare-wrap {
    display: block;
  }
  .compare-hint {
    display: inline-flex;
  }
  .compare-hint svg {
    flex-shrink: 0;
  }
  .compare-table th,
  .compare-table td {
    padding: 14px 12px;
    font-size: 13px;
  }
  .preview-grid {
    grid-template-columns: 1fr;
  }
  .preview-body h3 {
    font-size: 18px;
  }
  .level-track {
    grid-template-columns: 1fr;
  }
  .level-card.level-middle {
    grid-column: auto;
    order: initial;
  }
  .cta-box {
    flex-direction: column;
    align-items: stretch;
    padding: 36px 24px;
    gap: 30px;
  }
  .cta-actions .btn {
    width: 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }
  .footer-bottom {
    padding: 20px 0;
  }
}

/* roulang page: category1 */
:root {
  --bg-body: #F5F8FC;
  --bg-section-light: #FFFFFF;
  --bg-section-soft: #EDF3FB;
  --bg-dark: #071426;
  --bg-dark-2: #0A1B36;
  --bg-dark-3: #10264E;
  --primary: #0B6CFF;
  --primary-deep: #084ACB;
  --accent-cyan: #18C8FF;
  --accent-lime: #D7FF32;
  --success-mint: #2CF5AE;
  --warning: #FF8A4C;
  --danger: #FF5D5D;
  --text-primary: #10233F;
  --text-secondary: #42566F;
  --text-muted: #7D90A7;
  --text-on-dark: #EAF2FF;
  --border-light: #DCE6F2;
  --border-dark-soft: rgba(255,255,255,0.14);
  --glass-bg: rgba(255,255,255,0.08);
  --glass-bg-strong: rgba(255,255,255,0.14);
  --glass-border: rgba(255,255,255,0.18);
  --glass-highlight: inset 0 1px 0 rgba(255,255,255,0.3);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-pill: 999px;
  --shadow-card: 0 10px 30px rgba(7,20,38,0.08);
  --shadow-card-hover: 0 18px 40px rgba(7,20,38,0.12);
  --shadow-btn-glow: 0 10px 32px rgba(24,200,255,0.35);
  --shadow-glass: 0 18px 48px rgba(0,0,0,0.3);
  --transition: 0.28s cubic-bezier(0.2, 0, 0, 1);
  --font-stack: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-stack);
  background: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
body.no-scroll {
  overflow: hidden;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  display: block;
  max-width: 100%;
}
ul {
  list-style: none;
}
button,
input {
  font-family: inherit;
}
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding-top: 96px;
  padding-bottom: 96px;
}
.section.soft {
  background: var(--bg-section-soft);
}
.section.white {
  background: var(--bg-section-light);
}
.section-head {
  max-width: 680px;
  margin: 0 auto 42px;
  text-align: center;
}
.section-head.left {
  margin-left: 0;
  text-align: left;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-tag.light {
  color: var(--accent-cyan);
}
.section-head h2 {
  font-size: clamp(28px, 3.5vw, 44px);
  line-height: 1.25;
  font-weight: 800;
  color: var(--text-primary);
}
.section-head.light h2 {
  color: var(--text-on-dark);
}
.section-head p {
  margin-top: 14px;
  color: var(--text-secondary);
  font-size: 16px;
}
.section-head.light p {
  color: #C5D5ED;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 28px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 700;
  white-space: nowrap;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  color: #fff;
  box-shadow: 0 8px 24px rgba(11,108,255,0.22);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(11,108,255,0.34);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 6px 18px rgba(11,108,255,0.25);
}
.btn-outline {
  background: transparent;
  border-color: rgba(255,255,255,0.35);
  color: var(--text-on-dark);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.6);
}
.btn-sm {
  height: 40px;
  padding: 0 22px;
  font-size: 14px;
}
.btn-lg {
  height: 54px;
  padding: 0 38px;
  font-size: 17px;
}
.cta-glow {
  box-shadow: 0 0 0 1px rgba(24,200,255,.25), 0 12px 36px rgba(24,200,255,.35);
}
.cta-glow:hover {
  box-shadow: 0 0 0 1px rgba(24,200,255,.35), 0 18px 46px rgba(24,200,255,.42);
  transform: translateY(-2px);
}
/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: 72px;
  background: rgba(255,255,255,.9);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(220,230,242,.78);
  transition: box-shadow .3s ease, background .3s ease;
}
.site-header.scrolled {
  background: #fff;
  box-shadow: 0 10px 32px rgba(7,20,38,0.08);
}
.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  height: 72px;
  gap: 18px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  color: var(--text-primary);
}
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 13px;
  background: linear-gradient(135deg, var(--primary), var(--accent-cyan));
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  box-shadow: 0 8px 20px rgba(11,108,255,0.26);
}
.brand-name {
  font-weight: 800;
  font-size: 20px;
  line-height: 1.2;
  color: var(--text-primary);
}
.brand-tail {
  color: var(--primary);
}
.navToggle {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.site-nav {
  display: flex;
  align-items: center;
  flex: 1;
  min-width: 0;
}
.mobile-search,
.mobile-cta {
  display: none;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  margin: 0 auto;
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 8px 0;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 600;
  transition: color var(--transition);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 2px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--primary), var(--accent-cyan));
  transition: right .3s ease;
}
.nav-link:hover,
.nav-link.active {
  color: var(--primary);
}
.nav-link:hover::after,
.nav-link.active::after {
  right: 0;
}
.header-tools {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}
.search-box {
  display: flex;
  align-items: center;
  width: 232px;
  height: 42px;
  padding: 0 6px 0 16px;
  background: var(--bg-section-soft);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-pill);
  transition: border .3s ease, box-shadow .3s ease, background .3s ease;
}
.search-box:focus-within {
  background: #fff;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(11,108,255,.10);
}
.search-box input {
  flex: 1;
  min-width: 0;
  height: 100%;
  border: 0;
  outline: none;
  background: transparent;
  font-size: 14px;
  color: var(--text-primary);
}
.search-box input::placeholder {
  color: var(--text-muted);
}
.search-box button {
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  width: 32px;
  height: 32px;
  border: 0;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  transition: background .3s ease, transform .2s ease;
}
.search-box button:hover {
  background: var(--primary-deep);
  transform: scale(1.05);
}
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  background: transparent;
  border: 0;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  border-radius: var(--radius-pill);
  background: var(--text-primary);
  transition: transform .28s ease, opacity .28s ease;
}
/* Hero */
.page-hero {
  position: relative;
  padding: 68px 0 82px;
  background: var(--bg-dark-2);
  color: #fff;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("/assets/images/backpic/back-2.webp");
  background-position: center;
  background-size: cover;
  opacity: .36;
}
.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 84% 20%, rgba(24,200,255,.22), transparent 38%),
    radial-gradient(circle at 10% 90%, rgba(215,255,50,.08), transparent 32%),
    linear-gradient(90deg, rgba(7,20,38,.95) 0%, rgba(7,20,38,.74) 62%, rgba(10,27,54,.58) 100%);
}
.page-hero .container {
  position: relative;
  z-index: 1;
}
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 34px;
  font-size: 13px;
  color: #AFC1DB;
}
.breadcrumbs a {
  transition: color .3s ease;
}
.breadcrumbs a:hover {
  color: #fff;
}
.breadcrumbs .sep {
  opacity: .5;
}
.page-hero h1 {
  font-size: clamp(34px, 5vw, 62px);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 18px;
}
.hero-lead {
  max-width: 680px;
  font-size: 17px;
  line-height: 1.9;
  color: #CBD8EC;
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}
.chip {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 18px;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.18);
  font-size: 13px;
  font-weight: 600;
  color: #E0EAF8;
}
.hero-lightcard {
  position: absolute;
  right: 64px;
  bottom: 46px;
  z-index: 2;
  min-width: 220px;
  padding: 18px 22px;
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,.08);
  border: 1px solid var(--glass-border);
  border-top: 1px solid rgba(255,255,255,.24);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-glass);
  font-size: 14px;
  color: var(--text-on-dark);
}
.hero-lightcard strong {
  display: block;
  font-size: 16px;
  margin-bottom: 4px;
  color: #fff;
}
/* Feature */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
.feature-card {
  position: relative;
  display: flex;
  gap: 18px;
  padding: 28px;
  background: var(--bg-section-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  overflow: hidden;
}
.feature-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent-cyan));
  opacity: 0;
  transition: opacity .3s ease;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: #BBD3F0;
}
.feature-card:hover::after {
  opacity: 1;
}
.feature-card-icon {
  flex: 0 0 auto;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent-cyan));
  box-shadow: 0 8px 20px rgba(11,108,255,.18);
}
.feature-card-icon svg {
  width: 22px;
  height: 22px;
}
.feature-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}
.feature-card p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
}
/* Showcase */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
.showcase-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-section-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition);
}
.showcase-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card-hover);
}
.showcase-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: #DCE6F2;
}
.showcase-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.showcase-card:hover .showcase-media img {
  transform: scale(1.035);
}
.showcase-badge {
  position: absolute;
  left: 16px;
  bottom: 14px;
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 14px;
  border-radius: var(--radius-pill);
  background: rgba(7,20,38,.54);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,.25);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
}
.showcase-body {
  padding: 22px 24px 26px;
}
.showcase-body h3 {
  font-size: 20px;
  font-weight: 750;
  margin-bottom: 10px;
  color: var(--text-primary);
}
.showcase-body p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.78;
}
/* Dark flow */
.flow-section {
  position: relative;
  padding: 96px 0;
  background: var(--bg-dark);
  color: var(--text-on-dark);
  overflow: hidden;
}
.flow-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 24%, #000 74%, transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0%, #000 24%, #000 74%, transparent 100%);
}
.flow-section::after {
  content: "";
  position: absolute;
  width: 680px;
  height: 420px;
  right: -160px;
  top: 10%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(24,200,255,.26), transparent 70%);
  pointer-events: none;
}
.flow-section .container {
  position: relative;
  z-index: 1;
}
.flow-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.flow-item {
  position: relative;
  padding: 30px 28px;
  border-radius: var(--radius-lg);
  background: rgba(16,38,78,.44);
  border: 1px solid rgba(255,255,255,.14);
  box-shadow: var(--shadow-glass);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  transition: transform var(--transition), border-color var(--transition), background .3s ease;
}
.flow-item::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: var(--glass-highlight);
  pointer-events: none;
}
.flow-item:hover {
  transform: translateY(-4px);
  background: rgba(18,44,88,.56);
  border-color: rgba(255,255,255,.23);
}
.flow-step {
  display: inline-grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(24,200,255,.2), rgba(11,108,255,.2));
  border: 1px solid rgba(24,200,255,.3);
  color: var(--accent-cyan);
  font-size: 20px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}
.flow-item h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
  color: #F3F8FF;
}
.flow-item p {
  color: #B4C8E6;
  font-size: 15px;
  line-height: 1.78;
}
.flow-guide {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 42px;
  color: var(--accent-cyan);
  font-size: 14px;
  font-weight: 600;
}
.flow-guide a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent-cyan);
  transition: color .3s ease;
}
.flow-guide a:hover {
  color: #fff;
}
/* FAQ */
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  background: var(--bg-section-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(7,20,38,.04);
  transition: box-shadow .3s ease, border-color .3s ease;
}
.faq-item:hover {
  border-color: #C4D8F0;
  box-shadow: var(--shadow-card);
}
.faq-item[open] {
  border-color: #BFD5F0;
}
.faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 650;
  color: var(--text-primary);
  transition: color .3s ease;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary:hover {
  color: var(--primary);
}
.faq-icon {
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--bg-section-soft);
  color: var(--primary);
  transition: transform .3s ease, background .3s ease;
}
.faq-icon svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  stroke-width: 2.2;
}
.faq-item[open] .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-answer {
  padding: 0 24px 22px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.85;
  max-width: 92%;
}
.faq-answer p + p {
  margin-top: 8px;
}
/* CTA */
.cta-section {
  position: relative;
  padding: 96px 0;
  background:
    radial-gradient(circle at 82% 20%, rgba(24,200,255,.24), transparent 36%),
    radial-gradient(circle at 12% 86%, rgba(215,255,50,.09), transparent 32%),
    linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-dark-2) 48%, var(--bg-dark-3) 100%);
  color: var(--text-on-dark);
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 56px 56px;
}
.cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}
.cta-inner h2 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  color: #fff;
  line-height: 1.25;
  margin-bottom: 18px;
}
.cta-inner p {
  font-size: 16px;
  color: #BFCEE7;
  line-height: 1.9;
  margin-bottom: 34px;
}
.cta-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}
.cta-note {
  display: block;
  margin-top: 22px;
  font-size: 13px;
  color: #879ABE;
}
/* Footer */
.site-footer {
  background: #050D1A;
  color: #9FB0CB;
  padding: 70px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 36px;
  padding-bottom: 48px;
}
.footer-brand p {
  max-width: 320px;
  margin-top: 18px;
  font-size: 14px;
  line-height: 1.8;
  color: #7E91AF;
}
.site-footer .brand {
  color: #F2F6FF;
}
.footer-brand-mark {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent-cyan));
  color: #fff;
  font-weight: 800;
  font-size: 19px;
  box-shadow: 0 8px 20px rgba(11,108,255,.18);
}
.site-footer .brand-tail {
  color: var(--accent-cyan);
}
.footer-col h4 {
  color: #E3ECFA;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
}
.footer-col ul li {
  margin-bottom: 11px;
  font-size: 14px;
}
.footer-col a {
  color: #9FB0CB;
  transition: color .3s ease;
}
.footer-col a:hover {
  color: var(--accent-cyan);
}
.contact-phone {
  font-size: 18px;
  color: #F0F6FF;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.site-footer small {
  color: #6D81A2;
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 22px 0;
  border-top: 1px solid rgba(255,255,255,.08);
  font-size: 13px;
  color: #6B7D9C;
}
/* Responsive */
@media (min-width: 768px) {
  .site-nav .mobile-search,
  .site-nav .mobile-cta {
    display: none;
  }
}
@media (max-width: 1080px) {
  .header-tools .search-box {
    width: 188px;
  }
  .nav-links {
    gap: 24px;
  }
  .hero-lightcard {
    right: 30px;
  }
}
@media (max-width: 920px) {
  .header-tools .search-box {
    display: none;
  }
  .site-nav {
    margin-left: 4px;
  }
}
@media (max-width: 767px) {
  .site-header {
    height: 64px;
  }
  .header-inner {
    height: 64px;
    gap: 10px;
  }
  .header-tools .search-box,
  .header-tools .header-cta-btn {
    display: none;
  }
  .hamburger {
    display: flex;
  }
  .mobile-search,
  .mobile-cta {
    display: flex;
  }
  .site-nav {
    position: fixed;
    top: 64px;
    left: 12px;
    right: 12px;
    z-index: 999;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 18px 18px 22px;
    background: #FFFFFF;
    border: 1px solid var(--border-light);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    box-shadow: 0 22px 50px rgba(7,20,38,.18);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    pointer-events: none;
    transition: opacity .28s ease, transform .28s ease, visibility .28s ease;
  }
  .navToggle:checked ~ .site-nav {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
  }
  .site-nav .mobile-search {
    display: block;
    margin-bottom: 10px;
  }
  .site-nav .mobile-search .search-box {
    width: 100%;
  }
  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
    margin: 0;
  }
  .nav-links li + li {
    border-top: 1px solid #EEF3FA;
  }
  .nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 4px;
    font-size: 16px;
    color: var(--text-primary);
  }
  .nav-link::after {
    display: none;
  }
  .nav-link.active {
    color: var(--primary);
  }
  .mobile-cta {
    display: inline-flex;
    justify-content: center;
    width: 100%;
    margin-top: 16px;
  }
  .section {
    padding: 64px 0;
  }
  .feature-section .container,
  .showcase-section .container,
  .faq-section .container,
  .flow-section .container,
  .cta-section .container {
    padding: 0 16px;
  }
  .hero-lead {
    font-size: 16px;
  }
  .hero-tags {
    gap: 8px;
  }
  .chip {
    height: 32px;
    padding: 0 14px;
    font-size: 13px;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .feature-card {
    padding: 22px;
  }
  .showcase-grid {
    grid-template-columns: 1fr;
  }
  .flow-section {
    padding: 64px 0;
  }
  .flow-grid {
    grid-template-columns: 1fr;
  }
  .cta-section {
    padding: 68px 0;
  }
  .cta-actions {
    flex-direction: column;
    align-items: center;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-bottom: 30px;
  }
  .footer-bottom {
    justify-content: center;
    text-align: center;
  }
}
@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
  .header-inner {
    gap: 6px;
  }
  .brand {
    gap: 7px;
  }
  .brand-mark {
    width: 34px;
    height: 34px;
    font-size: 17px;
    border-radius: 11px;
  }
  .brand-name {
    font-size: 17px;
  }
  .brand-tail {
    display: inline;
  }
  .whiteline {
    display: none;
  }
  .faq-item summary {
    padding: 17px 18px;
    font-size: 15px;
  }
  .faq-answer {
    padding: 0 18px 18px;
  }
}
@media (max-width: 460px) {
  .hero-lightcard {
    display: none;
  }
}

/* roulang page: article */
:root {
  --bg-body: #F5F8FC;
  --bg-section-light: #FFFFFF;
  --bg-section-soft: #EDF3FB;
  --bg-dark: #071426;
  --bg-dark-2: #0A1B36;
  --bg-dark-3: #10264E;
  --primary: #0B6CFF;
  --primary-deep: #084ACB;
  --accent-cyan: #18C8FF;
  --accent-lime: #D7FF32;
  --success-mint: #2CF5AE;
  --warning: #FF8A4C;
  --danger: #FF5D5D;
  --text-primary: #10233F;
  --text-secondary: #42566F;
  --text-muted: #7D90A7;
  --text-on-dark: #EAF2FF;
  --border-light: #DCE6F2;
  --border-dark-soft: rgba(255, 255, 255, 0.14);
  --glass-bg: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.18);
  --glass-highlight: inset 0 1px 0 rgba(255, 255, 255, 0.3);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-pill: 999px;
  --shadow-card: 0 10px 30px rgba(7, 20, 38, 0.08);
  --shadow-card-hover: 0 18px 40px rgba(7, 20, 38, 0.12);
  --shadow-btn-glow: 0 10px 32px rgba(24, 200, 255, 0.35);
  --shadow-glass: 0 18px 48px rgba(0, 0, 0, 0.3);
  --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --ease-out: cubic-bezier(0.2, 0, 0, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-primary);
  background: var(--bg-body);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border: 0;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color .25s var(--ease-out), background-color .25s var(--ease-out), border-color .25s var(--ease-out), box-shadow .25s var(--ease-out);
}

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

a:focus-visible, button:focus-visible, input:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 6px;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 24px;
  border: 0;
  cursor: pointer;
  font-weight: 650;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--text-primary);
  transition: transform .25s var(--ease-out), box-shadow .25s var(--ease-out), background-color .25s var(--ease-out), border-color .25s var(--ease-out), color .25s var(--ease-out);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent-cyan) 100%);
  color: #fff;
  box-shadow: 0 8px 24px rgba(24, 200, 255, 0.28);
}

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

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 4px 16px rgba(24, 200, 255, 0.28);
}

.btn-outline {
  border: 1px solid rgba(255, 255, 255, 0.55);
  color: #fff;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.btn-sm {
  min-height: 38px;
  padding: 0 18px;
  font-size: 14px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(220, 230, 242, 0.8);
  box-shadow: 0 1px 0 rgba(7, 20, 38, 0.02);
  transition: box-shadow .3s var(--ease-out);
}

.site-header.scrolled {
  box-shadow: 0 12px 32px rgba(7, 20, 38, 0.1);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 22px;
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--text-primary);
}

.brand-mark,
.footer-brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  font-weight: 800;
  font-size: 20px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent-cyan));
  box-shadow: 0 6px 18px rgba(11, 108, 255, 0.25);
}

.brand-name {
  font-weight: 750;
  font-size: 20px;
  color: var(--text-primary);
  letter-spacing: 0;
  line-height: 1.2;
}

.brand-tail {
  color: var(--primary);
  font-weight: 650;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: 22px;
  margin-right: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 550;
  color: var(--text-secondary);
}

.nav-link:hover {
  color: var(--primary);
  background: rgba(11, 108, 255, 0.06);
}

.nav-link.active {
  color: var(--primary);
  background: rgba(11, 108, 255, 0.1);
  font-weight: 650;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.header-cta-btn {
  box-shadow: 0 6px 20px rgba(24, 200, 255, 0.2);
}

.navToggle {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.mobile-search,
.mobile-cta {
  display: none;
}

.search-box {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 42px;
  padding: 0 8px 0 16px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  background: var(--bg-section-soft);
  transition: border-color .25s var(--ease-out), box-shadow .25s var(--ease-out), background-color .25s var(--ease-out);
}

.search-box:focus-within {
  border-color: rgba(11, 108, 255, 0.5);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(11, 108, 255, 0.1);
}

.search-box input {
  width: 120px;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text-primary);
  font-size: 14px;
  height: 38px;
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.search-box button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent-cyan));
  color: #fff;
  cursor: pointer;
  flex-shrink: 0;
}

.search-box button:hover {
  opacity: 0.92;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  cursor: pointer;
  border-radius: 12px;
  background: transparent;
  border: 0;
  padding: 0 9px;
  transition: background-color .25s var(--ease-out);
}

.hamburger span {
  display: block;
  height: 2px;
  width: 100%;
  border-radius: 4px;
  background: var(--text-primary);
  transition: transform .25s var(--ease-out), opacity .25s var(--ease-out);
}

/* 内页文章 Hero */
.inner-hero {
  position: relative;
  color: #fff;
  background-color: var(--bg-dark);
  background-image: linear-gradient(120deg, rgba(7, 20, 38, 0.82) 0%, rgba(7, 20, 38, 0.42) 60%, rgba(16, 38, 78, 0.7) 100%), url('/assets/images/backpic/back-3.webp');
  background-position: center;
  background-size: cover;
  overflow: hidden;
}

.inner-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  opacity: 0.55;
  pointer-events: none;
}

.inner-hero::after {
  content: "";
  position: absolute;
  width: 520px;
  height: 520px;
  right: -160px;
  top: -180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(24, 200, 255, 0.24), transparent 66%);
  pointer-events: none;
}

.article-hero {
  padding: 46px 0 58px;
}

.article-hero .container {
  position: relative;
  z-index: 2;
  max-width: 1120px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(234, 242, 255, 0.78);
  margin-bottom: 26px;
}

.breadcrumb a {
  color: rgba(234, 242, 255, 0.78);
  transition: color .2s var(--ease-out);
}

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

.breadcrumb .bc-current {
  color: rgba(234, 242, 255, 0.95);
  max-width: 260px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.article-cate-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 14px;
  padding: 6px 14px;
  font-size: 13px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid var(--glass-border);
  color: var(--accent-cyan);
  backdrop-filter: blur(8px);
}

.article-title-wrap h1 {
  margin: 0;
  max-width: 960px;
  font-size: clamp(32px, 4.8vw, 56px);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 24px;
  margin-top: 24px;
  font-size: 14px;
  color: rgba(234, 242, 255, 0.75);
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.meta-item svg {
  width: 16px;
  height: 16px;
  opacity: 0.85;
}

/* 正文主体 */
.article-main {
  padding: 56px 0 90px;
}

.article-container {
  max-width: 1120px;
}

.article-body {
  background: var(--bg-section-light);
  border: 1px solid rgba(220, 230, 242, 0.7);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  padding: clamp(28px, 5.5vw, 60px);
}

.article-content {
  max-width: 760px;
  margin: 0 auto;
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.9;
}

.article-content p {
  margin: 0 0 24px;
  color: var(--text-secondary);
}

.article-content h2,
.article-content h3,
.article-content h4 {
  color: var(--text-primary);
  font-weight: 750;
  line-height: 1.35;
  margin-top: 40px;
  margin-bottom: 14px;
}

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

.article-content h3 {
  font-size: 21px;
}

.article-content h4 {
  font-size: 18px;
}

.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-content a:hover {
  color: var(--primary-deep);
}

.article-content img,
.article-content video {
  border-radius: var(--radius-lg);
  margin: 32px auto;
  box-shadow: var(--shadow-card);
}

.article-content blockquote {
  position: relative;
  margin: 28px 0;
  padding: 20px 24px 20px 30px;
  background: var(--bg-section-soft);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  border-left: 4px solid var(--accent-cyan);
  color: var(--text-secondary);
}

.article-content blockquote p {
  margin: 0;
}

.article-content ul,
.article-content ol {
  margin: 0 0 24px;
  padding-left: 14px;
}

.article-content ul li,
.article-content ol li {
  position: relative;
  margin-bottom: 10px;
  padding-left: 16px;
  color: var(--text-secondary);
}

.article-content ul li {
  list-style: none;
}

.article-content ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent-cyan));
}

.article-content ol {
  counter-reset: cmsArticleList;
  list-style: none;
}

.article-content ol li {
  counter-increment: cmsArticleList;
}

.article-content ol li::before {
  content: counter(cmsArticleList) ".";
  color: var(--primary);
  font-weight: 650;
  margin-right: 8px;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 30px 0;
  overflow: hidden;
  border-radius: var(--radius-md);
  font-size: 15px;
}

.article-content th,
.article-content td {
  padding: 13px 16px;
  border: 1px solid var(--border-light);
  text-align: left;
}

.article-content th {
  background: var(--bg-section-soft);
  color: var(--text-primary);
  font-weight: 650;
}

.article-content td {
  color: var(--text-secondary);
}

.article-content pre {
  position: relative;
  background: var(--bg-dark-2);
  color: var(--text-on-dark);
  padding: 22px 24px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.7;
  margin: 28px 0;
}

.article-content code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  background: rgba(11, 108, 255, 0.08);
  color: var(--primary-deep);
  padding: 2px 6px;
  border-radius: 6px;
}

.article-content pre code {
  background: transparent;
  padding: 0;
  color: inherit;
}

/* 文末区域 */
.article-tail {
  max-width: 760px;
  margin: 48px auto 0;
  border-top: 1px solid var(--border-light);
  padding-top: 32px;
}

.article-share-row,
.article-tags-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.article-tags-row {
  margin-bottom: 16px;
}

.tail-label {
  font-size: 14px;
  color: var(--text-muted);
  margin-right: 6px;
  font-weight: 550;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 550;
  background: rgba(11, 108, 255, 0.08);
  color: var(--primary);
  border: 1px solid rgba(11, 108, 255, 0.08);
  transition: background-color .2s var(--ease-out), border-color .2s var(--ease-out), color .2s var(--ease-out);
}

.tag:hover {
  background: rgba(11, 108, 255, 0.12);
  color: var(--primary-deep);
}

.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 34px;
  padding: 0 14px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-pill);
  background: #fff;
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: all .2s var(--ease-out);
}

.share-btn:hover {
  border-color: rgba(11, 108, 255, 0.4);
  color: var(--primary);
  background: rgba(11, 108, 255, 0.04);
}

.share-btn svg {
  width: 15px;
  height: 15px;
}

.article-pn {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 34px;
}

.pn-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: 92px;
  justify-content: center;
  padding: 18px 22px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  background: var(--bg-section-soft);
  color: var(--text-secondary);
  transition: all .25s var(--ease-out);
}

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

.pn-item:hover {
  background: #fff;
  border-color: rgba(11, 108, 255, 0.35);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
  color: var(--text-primary);
}

.pn-next {
  text-align: right;
}

/* 相关推荐 */
.related-section {
  margin-top: 70px;
}

.section-hd {
  margin-bottom: 34px;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--primary);
  font-weight: 650;
  letter-spacing: 0.02em;
  margin-bottom: 8px;
}

.section-hd h2 {
  margin: 0;
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.3;
}

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

.related-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid rgba(220, 230, 242, 0.8);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform .3s var(--ease-out), box-shadow .3s var(--ease-out), border-color .3s var(--ease-out);
}

.related-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(11, 108, 255, 0.3);
}

.related-media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: linear-gradient(135deg, #e8f1fc, #f7fafd);
}

.related-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s var(--ease-out);
}

.related-card:hover .related-media img {
  transform: scale(1.04);
}

.related-info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  padding: 22px 22px 24px;
}

.related-info h3 {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-primary);
}

.related-info p {
  margin: 0;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 内容未找到 */
.missing-main {
  padding: 90px 0 130px;
}

.missing-card {
  max-width: 540px;
  margin: 0 auto;
  text-align: center;
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  padding: 60px 40px;
}

.missing-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  margin-bottom: 22px;
  border-radius: 50%;
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent-cyan));
}

.missing-card h1 {
  margin: 0 0 12px;
  font-size: 28px;
  line-height: 1.3;
}

.missing-card p {
  margin: 0 0 28px;
  color: var(--text-secondary);
}

/* 页脚 */
.site-footer {
  background: #050D1C;
  color: #8E9DB5;
  padding-top: 64px;
}

.site-footer .brand {
  color: #F1F6FF;
  margin-bottom: 14px;
}

.site-footer .brand-name {
  color: #F1F6FF;
}

.footer-brand-mark {
  width: 38px;
  height: 38px;
  font-size: 18px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding-bottom: 42px;
}

.footer-brand p {
  max-width: 340px;
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: #8E9DB5;
}

.footer-col h4 {
  margin: 0 0 16px;
  font-size: 16px;
  font-weight: 650;
  color: #EAF2FF;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col li {
  font-size: 14px;
  color: #8E9DB5;
}

.footer-col a {
  color: #8E9DB5;
}

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

.footer-contact li {
  line-height: 1.7;
}

.contact-phone {
  font-size: 16px;
  font-weight: 650;
  color: #D7E6FF;
}

.contact-phone:hover {
  color: var(--accent-cyan);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding: 20px 0 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 13px;
  color: #667A96;
}

/* 响应式 */
@media (max-width: 1024px) {
  .related-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }

  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr;
  }
}

@media (max-width: 991px) {
  .hamburger {
    display: inline-flex;
  }

  .search-box input {
    width: 100px;
  }

  .site-nav {
    position: fixed;
    top: 72px;
    right: 0;
    width: min(78vw, 340px);
    height: calc(100vh - 72px);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 18px;
    padding: 28px 22px;
    background: #FFFFFF;
    box-shadow: -24px 0 60px rgba(7, 20, 38, 0.14);
    transform: translateX(110%);
    transition: transform .35s var(--ease-out);
    border-radius: 22px 0 0 0;
    margin: 0;
  }

  .navToggle:checked ~ .site-nav {
    transform: translateX(0);
  }

  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .nav-link {
    justify-content: flex-start;
    padding: 0 18px;
    border-radius: var(--radius-md);
  }

  .mobile-search,
  .mobile-cta {
    display: flex;
  }

  .mobile-search .search-box {
    width: 100%;
  }

  .mobile-search .search-box input {
    flex: 1;
    width: auto;
  }

  .mobile-cta {
    display: inline-flex;
    width: 100%;
  }

  .header-tools .search-box,
  .header-tools .header-cta-btn {
    display: none;
  }
}

@media (max-width: 768px) {
  .header-inner {
    min-height: 60px;
  }

  .site-nav {
    top: 60px;
    height: calc(100vh - 60px);
  }

  .article-hero {
    padding: 38px 0 46px;
  }

  .article-title-wrap h1 {
    font-size: clamp(26px, 6.4vw, 38px);
  }

  .article-main {
    padding: 40px 0 64px;
  }

  .article-body {
    border-radius: var(--radius-lg);
    padding: 24px 20px;
  }

  .article-tail {
    margin-top: 30px;
    padding-top: 24px;
  }

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

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

  .footer-brand {
    grid-column: 1 / -1;
  }
}

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

  .header-inner {
    gap: 12px;
  }

  .brand-name {
    font-size: 18px;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
    font-size: 18px;
  }

  .article-pn {
    grid-template-columns: 1fr;
  }

  .pn-item {
    min-height: 74px;
  }

  .pn-next {
    text-align: left;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

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

  .missing-card {
    padding: 44px 20px;
  }

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* roulang page: category2 */
:root{
  --bg-body:#F5F8FC;
  --bg-section-light:#FFFFFF;
  --bg-section-soft:#EDF3FB;
  --bg-dark:#071426;
  --bg-dark-2:#0A1B36;
  --bg-dark-3:#10264E;
  --primary:#0B6CFF;
  --primary-deep:#084ACB;
  --accent-cyan:#18C8FF;
  --accent-lime:#D7FF32;
  --success-mint:#2CF5AE;
  --warning:#FF8A4C;
  --danger:#FF5D5D;
  --text-primary:#10233F;
  --text-secondary:#42566F;
  --text-muted:#7D90A7;
  --text-on-dark:#EAF2FF;
  --border-light:#DCE6F2;
  --border-dark-soft:rgba(255,255,255,.14);
  --glass-bg:rgba(255,255,255,.08);
  --glass-bg-strong:rgba(255,255,255,.14);
  --glass-border:rgba(255,255,255,.18);
  --glass-highlight:inset 0 1px 0 rgba(255,255,255,.3);
  --radius-sm:8px;
  --radius-md:14px;
  --radius-lg:20px;
  --radius-xl:28px;
  --radius-pill:999px;
  --shadow-card:0 10px 30px rgba(7,20,38,.08);
  --shadow-card-hover:0 18px 40px rgba(7,20,38,.12);
  --shadow-btn-glow:0 10px 32px rgba(24,200,255,.35);
  --shadow-glass:0 18px 48px rgba(0,0,0,.3);
  --font-stack:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-stack);
  background:var(--bg-body);
  color:var(--text-primary);
  line-height:1.75;
  font-size:16px;
}
body,div,section,main,header,footer,nav,ul,ol,li,p,dl,dt,dd,h1,h2,h3,h4,h5,h6,input,button,a,img,blockquote,figure{margin:0;padding:0}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block;height:auto}
svg{display:block}
button,input{font-family:inherit;font-size:inherit}
summary{list-style:none}
summary::-webkit-details-marker{display:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.section{padding-top:104px;padding-bottom:104px}
.section-light{background:var(--bg-section-light)}
.section-soft{background:var(--bg-section-soft)}
.dark-text{color:var(--text-on-dark)}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border:1px solid transparent;
  border-radius:var(--radius-pill);
  font-weight:600;
  line-height:1.2;
  padding:14px 28px;
  box-shadow:0 2px 4px rgba(7,20,38,.06);
  transition:all .25s cubic-bezier(.2,0,0,1);
  cursor:pointer;
  white-space:nowrap;
}
.btn:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:3px;
  box-shadow:0 0 0 6px rgba(11,108,255,.18);
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--accent-cyan) 130%);
  color:#fff;
  border-color:transparent;
  box-shadow:0 8px 26px rgba(11,108,255,.28);
}
.btn-primary:hover{
  transform:translateY(-2px);
  background:linear-gradient(135deg,var(--primary-deep) 0%,var(--accent-cyan) 150%);
  box-shadow:0 12px 34px rgba(11,108,255,.38);
}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-secondary{
  border-color:rgba(255,255,255,.58);
  color:var(--text-on-dark);
  background:rgba(255,255,255,.06);
  backdrop-filter:blur(12px);
  box-shadow:none;
}
.btn-secondary:hover{
  background:rgba(255,255,255,.16);
  border-color:rgba(255,255,255,.9);
  transform:translateY(-2px);
}
.btn-secondary:active{transform:translateY(0)}
.btn-sm{padding:10px 20px}
.btn-accent{
  background:linear-gradient(135deg,var(--accent-cyan),var(--success-mint));
  color:#06263B;
  border:none;
  box-shadow:var(--shadow-btn-glow);
  font-weight:700;
}
.btn-accent:hover{
  transform:translateY(-2px);
  filter:saturate(1.18);
  box-shadow:0 18px 48px rgba(24,200,255,.5);
}
.btn-accent:active{transform:translateY(0)}
.btn-ghost-light{
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.28);
  color:var(--text-on-dark);
  box-shadow:none;
}
.btn-ghost-light:hover{
  background:rgba(255,255,255,.18);
  border-color:rgba(255,255,255,.5);
}
/* header */
.site-header{
  width:100%;
  min-height:72px;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(220,230,242,.8);
  position:sticky;
  top:0;
  z-index:90;
  transition:background .3s,box-shadow .3s;
}
.header-inner{
  display:flex;
  align-items:center;
  min-height:72px;
  gap:24px;
  position:relative;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  border-radius:12px;
  background:linear-gradient(145deg,var(--primary),var(--accent-cyan));
  color:#fff;
  font-weight:800;
  font-size:20px;
  box-shadow:0 8px 22px rgba(11,108,255,.22);
}
.brand-name{
  font-size:21px;
  font-weight:800;
  letter-spacing:-.2px;
  color:var(--text-primary);
}
.brand-tail{
  font-weight:600;
  color:var(--primary);
}
.header-tools{
  display:flex;
  align-items:center;
  gap:16px;
  margin-left:auto;
}
.search-box{
  display:flex;
  align-items:center;
  background:#F1F7FD;
  border:1px solid transparent;
  border-radius:var(--radius-pill);
  padding:8px 8px 8px 18px;
  flex:0 1 280px;
  transition:border .2s,box-shadow .2s,background .2s;
}
.search-box:focus-within{
  border-color:rgba(11,108,255,.4);
  box-shadow:0 0 0 5px rgba(11,108,255,.12);
  background:#fff;
}
.search-box input{
  width:100%;
  border:none;
  background:transparent;
  outline:none;
  color:var(--text-primary);
  font-size:14px;
  line-height:1;
  padding:2px 0;
}
.search-box button{
  width:36px;
  height:36px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:var(--radius-pill);
  border:none;
  background:rgba(11,108,255,.08);
  color:var(--primary);
  cursor:pointer;
  transition:background .2s,color .2s;
}
.search-box button:hover{background:var(--primary);color:#fff}
.site-nav{display:flex;align-items:center;gap:18px;margin-left:auto;margin-right:6px}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-link{
  display:inline-block;
  height:52px;
  line-height:52px;
  position:relative;
  padding:0 18px;
  font-weight:600;
  color:var(--text-secondary);
  border:none;
  background:transparent;
  transition:color .2s;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:16px;
  right:16px;
  bottom:8px;
  height:3px;
  border-radius:6px 6px 0 0;
  background:linear-gradient(90deg,var(--primary),var(--accent-cyan));
  opacity:0;
  transition:opacity .2s,transform .2s;
  transform:scaleX(.7);
}
.nav-link:hover{color:var(--primary)}
.nav-link.active{color:var(--primary-deep)}
.nav-link.active::after{opacity:1;transform:scaleX(1)}
.hamburger{display:none;width:44px;height:44px;border-radius:12px;align-items:center;justify-content:center;flex-direction:column;gap:6px;background:transparent;cursor:pointer;border:none}
.hamburger span{width:20px;height:2px;border-radius:3px;background:var(--text-primary);transition:all .25s}
.mobile-search{display:none}
.mobile-cta{display:none}
.navToggle{position:absolute;left:-9999px}
/* footer */
.site-footer{
  background:var(--bg-dark);
  color:#B9C8E0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr .8fr .8fr 1fr;
  gap:48px;
  padding:68px 0 44px;
}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{
  color:#8FA4C5;
  font-size:14px;
  line-height:1.8;
  max-width:320px;
}
.footer-brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  border-radius:10px;
  background:linear-gradient(145deg,var(--primary),var(--accent-cyan));
  color:#fff;
  font-weight:800;
  font-size:18px;
}
.footer-brand .brand-name{color:#EFF5FF}
.footer-brand .brand-tail{color:var(--accent-cyan)}
.footer-col h4{
  font-size:16px;
  color:#fff;
  font-weight:700;
  margin-bottom:18px;
  letter-spacing:.5px;
}
.footer-col ul li{margin-bottom:12px}
.footer-col a{
  color:#B9C8E0;
  font-size:14px;
  transition:color .2s;
  display:inline-block;
  position:relative;
}
.footer-col a:hover{color:var(--accent-cyan);transform:translateX(3px)}
.footer-contact li{font-size:14px}
.contact-phone{font-size:18px;font-weight:700;color:#fff !important}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  border-top:1px solid rgba(255,255,255,.09);
  padding:22px 0 28px;
  font-size:13px;
  color:#8196B5;
}
.footer-bottom span{letter-spacing:.4px}
/* breadcrumb  */
.breadcrumb{
  display:flex;
  gap:10px;
  align-items:center;
  font-size:14px;
  color:rgba(234,242,255,.72);
  margin-bottom:18px;
  flex-wrap:wrap;
}
.breadcrumb a{color:rgba(234,242,255,.9);transition:color .2s}
.breadcrumb a:hover{color:var(--accent-cyan)}
.breadcrumb i{
  font-style:normal;
  display:block;
  width:16px;
  height:1px;
  background:rgba(255,255,255,.4);
}
/* page / category hero */
.category-hero{
  position:relative;
  background:
    linear-gradient(100deg,rgba(3,11,28,.94) 10%,rgba(5,19,43,.72) 52%,rgba(9,33,68,.35) 100%),
    url("/assets/images/backpic/back-2.webp") center center/cover no-repeat;
  color:var(--text-on-dark);
  padding:76px 0 92px;
  overflow:hidden;
}
.category-hero::before{
  content:"";
  position:absolute;
  width:520px;
  height:520px;
  right:-160px;
  top:-160px;
  background:radial-gradient(circle,rgba(24,200,255,.23),transparent 68%);
  pointer-events:none;
}
.category-hero::after{
  content:"";
  position:absolute;
  width:360px;
  height:360px;
  left:-130px;
  bottom:-180px;
  background:radial-gradient(circle,rgba(214,255,50,.1),transparent 65%);
  pointer-events:none;
}
.category-hero-inner{
  position:relative;
  z-index:2;
}
.hero-eyebrow{
  display:inline-block;
  padding:5px 14px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(255,255,255,.2);
  font-size:13px;
  letter-spacing:3px;
  color:#D8EEFF;
  margin-bottom:18px;
  background:rgba(255,255,255,.06);
}
.category-hero h1{
  font-size:clamp(38px,5vw,58px);
  font-weight:800;
  line-height:1.2;
  color:#fff;
  letter-spacing:1px;
  margin-bottom:20px;
  max-width:820px;
}
.category-hero p{
  font-size:17px;
  line-height:1.9;
  color:rgba(220,234,255,.85);
  max-width:760px;
  margin-bottom:34px;
}
.hero-actions{
  display:flex;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
}
/* section heading */
.section-heading{
  max-width:760px;
  margin-bottom:52px;
}
.section-heading.center{
  margin-left:auto;
  margin-right:auto;
  text-align:center;
}
.section-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:700;
  letter-spacing:2px;
  color:var(--primary);
  margin-bottom:14px;
  background:rgba(11,108,255,.08);
  border-radius:var(--radius-pill);
  padding:6px 14px;
}
.section-heading h2{
  font-size:clamp(28px,3.5vw,44px);
  line-height:1.3;
  font-weight:750;
  letter-spacing:-.6px;
  color:var(--text-primary);
  margin-bottom:14px;
}
.section-heading p{
  font-size:16px;
  line-height:1.85;
  color:var(--text-muted);
  margin-top:8px;
}
/* service flow */
.flow-grid{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:30px;
}
.flow-card{
  position:relative;
  background:#fff;
  border:1px solid var(--border-light);
  border-radius:var(--radius-lg);
  padding:28px 26px 30px;
  box-shadow:var(--shadow-card);
  transition:transform .25s,box-shadow .25s,border-color .25s;
  overflow:hidden;
}
.flow-card::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  height:4px;
  top:0;
  background:linear-gradient(90deg,var(--primary),var(--accent-cyan));
  opacity:0;
  transition:opacity .2s;
}
.flow-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-card-hover);
  border-color:rgba(11,108,255,.2);
}
.flow-card:hover::after{opacity:1}
.flow-num{
  display:flex;
  align-items:center;
  justify-content:center;
  width:50px;
  height:50px;
  border-radius:16px;
  background:linear-gradient(145deg,rgba(11,108,255,.12),rgba(24,200,255,.16));
  color:var(--primary-deep);
  font-weight:800;
  font-size:18px;
  margin-bottom:20px;
}
.flow-card h3{
  font-size:19px;
  font-weight:700;
  color:var(--text-primary);
  margin-bottom:12px;
}
.flow-card p{
  color:var(--text-secondary);
  font-size:14px;
  line-height:1.85;
}
/* benefits */
.benefit-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.benefit-card{
  background:#fff;
  border-radius:var(--radius-lg);
  border:1px solid var(--border-light);
  padding:30px 26px;
  box-shadow:var(--shadow-card);
  transition:transform .25s,box-shadow .25s,border-color .25s;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.benefit-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-card-hover);
  border-color:rgba(11,108,255,.25);
}
.benefit-icon{
  width:56px;
  height:56px;
  border-radius:18px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--accent-cyan));
  color:#fff;
  box-shadow:0 10px 24px rgba(11,108,255,.26);
}
.benefit-card h3{
  font-size:19px;
  font-weight:700;
  color:var(--text-primary);
}
.benefit-card p{
  color:var(--text-muted);
  font-size:14px;
  line-height:1.8;
}
.benefit-list{
  margin-top:2px;
}
.benefit-list li{
  list-style:none;
  position:relative;
  padding-left:18px;
  color:var(--text-secondary);
  font-size:14px;
  line-height:1.9;
}
.benefit-list li::before{
  content:"";
  position:absolute;
  left:4px;
  top:14px;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--accent-cyan);
}
/* split media */
.split-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  align-items:center;
  gap:72px;
}
.media-visual{
  position:relative;
  border-radius:var(--radius-xl);
  overflow:hidden;
  box-shadow:var(--shadow-card-hover);
}
.media-visual::after{
  content:"";
  display:block;
  padding-top:76%;
}
.media-visual img{
  position:absolute;
  left:0;
  top:0;
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.media-visual:hover img{transform:scale(1.035)}
.media-copy h2{
  font-size:clamp(28px,3.2vw,40px);
  line-height:1.3;
  font-weight:750;
  color:var(--text-primary);
  margin-bottom:24px;
}
.media-copy p{
  color:var(--text-secondary);
  line-height:1.9;
  margin-bottom:24px;
}
.copy-list li{
  display:flex;
  align-items:flex-start;
  gap:12px;
  color:var(--text-secondary);
  line-height:1.75;
  margin-bottom:14px;
}
.copy-list li svg{
  flex:0 0 22px;
  width:22px;
  height:22px;
  margin-top:4px;
  color:var(--success-mint);
}
.copy-list li strong{color:var(--text-primary)}
.copy-actions{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
  margin-top:26px;
}
/* agreement */
.agreement-wrapper{
  display:grid;
  grid-template-columns:1.1fr 1fr;
  gap:28px;
}
.agreement-card{
  background:#fff;
  border-radius:var(--radius-lg);
  border:1px solid var(--border-light);
  box-shadow:var(--shadow-card);
  padding:34px;
}
.agreement-card h3{
  font-size:18px;
  font-weight:700;
  color:var(--text-primary);
  margin-bottom:22px;
  display:flex;
  align-items:center;
  gap:10px;
}
.agreement-card h3 svg{
  color:var(--primary);
  width:20px;
  height:20px;
}
.agreement-list{
  border-top:1px solid var(--border-light);
}
.agreement-list li{
  display:flex;
  align-items:center;
  justify-content:space-between;
  border-bottom:1px solid var(--border-light);
  min-height:62px;
}
.agreement-list a{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:15px;
  font-weight:600;
  color:var(--text-primary);
  transition:color .2s;
  flex:1;
}
.agreement-list a svg{
  color:var(--text-muted);
  transition:color .2s;
}
.agreement-list a:hover{color:var(--primary)}
.agreement-list a:hover svg{color:var(--accent-cyan)}
.agreement-list .link-arrow{
  color:var(--border-light);
  transition:transform .2s,color .2s;
}
.agreement-list li:hover .link-arrow{color:var(--primary);transform:translateX(4px)}
.contact-panel{
  background:linear-gradient(135deg,var(--bg-dark-2),var(--bg-dark-3));
  color:var(--text-on-dark);
  border:none;
  box-shadow:var(--shadow-glass);
  position:relative;
  overflow:hidden;
}
.contact-panel::before{
  content:"";
  position:absolute;
  width:220px;
  height:220px;
  right:-90px;
  top:-90px;
  background:radial-gradient(circle,rgba(24,200,255,.24),transparent 70%);
}
.contact-panel h3{color:#fff}
.contact-panel p{color:rgba(220,234,255,.72);font-size:15px;line-height:1.9}
.contact-tel{
  display:inline-flex;
  align-items:center;
  gap:12px;
  font-size:30px;
  font-weight:800;
  color:#fff;
  margin:20px 0 8px;
  letter-spacing:1px;
  font-variant-numeric:tabular-nums;
}
.contact-time{
  font-size:14px;
  color:rgba(220,234,255,.7);
  margin-bottom:24px;
}
.contact-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  position:relative;
  z-index:1;
}
/* faq */
.faq-list{
  max-width:880px;
  margin:0 auto;
}
.faq-item{
  background:#fff;
  border:1px solid var(--border-light);
  border-radius:var(--radius-md);
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:border-color .2s,box-shadow .2s;
}
.faq-item[open]{
  border-color:rgba(11,108,255,.3);
  box-shadow:0 14px 36px rgba(7,20,38,.1);
}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:19px 22px;
  cursor:pointer;
  font-size:16px;
  font-weight:600;
  color:var(--text-primary);
  transition:color .2s;
}
.faq-item summary:hover{color:var(--primary)}
.faq-item summary .faq-q::before{
  content:"";
  display:inline-flex;
  flex:0 0 6px;
  width:6px;
  height:6px;
  margin-right:12px;
  border-radius:50%;
  background:var(--accent-cyan);
}
.faq-arrow{
  width:26px;
  height:26px;
  flex:0 0 26px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  color:var(--primary);
  background:rgba(11,108,255,.1);
  transition:transform .26s,background .2s,color .2s;
}
.faq-arrow svg{
  width:14px;
  height:14px;
}
details[open] .faq-arrow{
  transform:rotate(180deg);
  background:var(--primary);
  color:#fff;
}
.faq-a{
  padding:0 22px 22px;
  color:var(--text-secondary);
  font-size:14px;
  line-height:1.9;
  border-top:1px dashed var(--border-light);
  margin:0 22px 0;
  padding:14px 0 20px;
}
.faq-a p{margin-bottom:8px}
.faq-a p:last-child{margin-bottom:0}
/* CTA */
.cta-section{
  background:var(--bg-dark);
  position:relative;
  overflow:hidden;
}
.cta-section::before{
  content:"";
  position:absolute;
  width:660px;
  height:660px;
  left:50%;
  top:-340px;
  transform:translateX(-50%);
  background:radial-gradient(circle,rgba(11,108,255,.33),rgba(11,108,255,.06) 55%,transparent 75%);
  pointer-events:none;
}
.cta-section::after{
  content:"";
  position:absolute;
  width:360px;
  height:360px;
  left:-180px;
  bottom:-200px;
  background:radial-gradient(circle,rgba(24,200,255,.24),transparent 70%);
  pointer-events:none;
}
.cta-box{
  position:relative;
  z-index:1;
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  box-shadow:var(--shadow-glass),var(--glass-highlight);
  border-radius:var(--radius-xl);
  padding:68px;
  text-align:center;
  max-width:1000px;
  margin:0 auto;
}
.cta-lime{
  display:inline-block;
  width:46px;
  height:4px;
  border-radius:4px;
  background:linear-gradient(90deg,var(--accent-cyan),var(--accent-lime));
  margin-bottom:26px;
}
.cta-box h2{
  color:#fff;
  font-size:clamp(30px,4vw,48px);
  line-height:1.25;
  font-weight:800;
  margin-bottom:18px;
}
.cta-box p{
  color:rgba(220,234,255,.78);
  font-size:16px;
  line-height:1.9;
  max-width:680px;
  margin:0 auto 34px;
}
.cta-actions{
  display:flex;
  gap:16px;
  justify-content:center;
  flex-wrap:wrap;
}
.cta-card-meta{
  display:flex;
  justify-content:center;
  gap:10px 28px;
  flex-wrap:wrap;
  margin-top:28px;
  color:rgba(220,234,255,.72);
  font-size:13px;
}
.cta-card-meta span{
  display:inline-flex;
  gap:6px;
  align-items:center;
}
.cta-card-meta svg{
  width:15px;
  height:15px;
}
/* responsive */
@media (max-width:1024px){
  .section{padding-top:84px;padding-bottom:84px}
  .flow-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .benefit-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .split-grid{gap:48px}
  .header-cta-btn{display:none}
}
@media (max-width:992px){
  .site-header{min-height:60px}
  .header-inner{min-height:60px}
  .search-box{display:none}
  .site-nav{
    position:fixed;
    top:0;
    right:0;
    bottom:0;
    width:min(420px,88vw);
    background:#FFFFFF;
    margin:0;
    padding:90px 34px 36px;
    display:block;
    box-shadow:-20px 0 60px rgba(7,20,38,.16);
    transform:translateX(104%);
    transition:transform .3s cubic-bezier(.2,0,0,1);
    overflow-y:auto;
    z-index:120;
  }
  .site-nav::before{
    content:"";
    position:absolute;
    top:0;
    left:0;
    right:0;
    height:76px;
    background:transparent;
  }
  .navToggle:checked ~ .site-nav{
    transform:translateX(0);
  }
  .site-nav .mobile-search{
    display:block;
    margin-bottom:26px;
  }
  .site-nav .search-box{
    display:flex;
    width:100%;
  }
  .nav-links{
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    border-top:1px solid var(--border-light);
    padding-top:18px;
  }
  .nav-link{
    display:block;
    height:auto;
    line-height:1.4;
    padding:14px 10px;
    border-radius:var(--radius-md);
    font-size:16px;
  }
  .nav-link::after{display:none}
  .nav-link.active{
    background:rgba(11,108,255,.09);
    color:var(--primary-deep);
    padding-left:16px;
  }
  .nav-link:hover{background:rgba(11,108,255,.05)}
  .header-tools{gap:8px}
  .hamburger{
    display:inline-flex;
    margin-left:4px;
    z-index:130;
  }
  .mobile-cta{
    display:inline-flex;
    width:100%;
    margin-top:16px;
    justify-content:center;
    background:linear-gradient(135deg,var(--primary),var(--accent-cyan));
  }
  .navToggle:checked ~ .header-tools .hamburger{
    position:relative;
  }
  .navToggle:checked ~ .header-tools .hamburger span:nth-child(1){transform:translateY(8px) rotate(45deg)}
  .navToggle:checked ~ .header-tools .hamburger span:nth-child(2){opacity:0}
  .navToggle:checked ~ .header-tools .hamburger span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
}
@media (max-width:768px){
  .section{padding-top:64px;padding-bottom:64px}
  .section-heading{margin-bottom:38px}
  .category-hero{padding:58px 0 72px}
  .category-hero h1{font-size:34px}
  .flow-grid{grid-template-columns:1fr}
  .benefit-grid{grid-template-columns:1fr}
  .split-grid{grid-template-columns:1fr;gap:36px}
  .agreement-wrapper{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding:52px 0 32px}
  .footer-bottom{flex-direction:column;text-align:center}
  .cta-box{padding:48px 24px}
  .copy-actions{flex-direction:column}
  .copy-actions .btn{width:100%}
  .contact-actions .btn{flex:1;min-width:120px}
}
@media (max-width:520px){
  .brand-name{font-size:18px}
  .brand-mark{width:34px;height:34px;font-size:18px;border-radius:10px}
  .category-hero p{font-size:15px}
  .hero-actions .btn{width:100%}
  .benefit-grid{grid-template-columns:1fr}
  .agreement-card{padding:24px}
  .cta-section::before{width:440px;height:440px}
}