/* roulang page: index */
:root {
  --bg-deep: #050810;
  --bg-panel: #0a1522;
  --bg-card: rgba(16, 28, 46, 0.72);
  --bg-card-solid: #101d30;
  --cyan: #2fd8ff;
  --cyan-light: #a8f0ff;
  --violet: #8b7bff;
  --green: #35d6a0;
  --amber: #ffc857;
  --danger: #ff6f91;
  --title-color: #e8f3ff;
  --text-color: #b7c9e0;
  --muted: #7c90ad;
  --border: rgba(160, 190, 255, 0.16);
  --radius: 16px;
  --radius-lg: 24px;
  --radius-btn: 40px;
  --shadow: 0 14px 40px rgba(0, 10, 24, 0.25);
  --shadow-hover: 0 20px 52px rgba(0, 20, 40, 0.35), 0 0 0 1px rgba(47, 216, 255, 0.12);
  --maxw: 1260px;
  --space-section: 112px;
  --font-sans: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans CJK SC", system-ui, sans-serif;
  --font-num: "DIN Alternate", "Roboto Mono", ui-monospace, monospace;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  background: var(--bg-deep);
  color: var(--text-color);
  line-height: 1.8;
  font-size: 16px;
  overflow-x: hidden;
  min-height: 100vh;
  letter-spacing: 0.01em;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 60% 40% at 15% 0%, rgba(47, 216, 255, 0.05), transparent 60%),
    radial-gradient(ellipse 50% 40% at 90% 20%, rgba(139, 123, 255, 0.04), transparent 60%),
    #050810;
}
body::after {
  content: "";
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 300px;
  z-index: -1;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(47, 216, 255, 0.08), transparent 70%);
  pointer-events: none;
}
img { max-width: 100%; height: auto; display: inline-block; }
a { color: var(--cyan); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--cyan-light); }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; }
button { cursor: pointer; border: none; background: none; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 4px; }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: var(--space-section) 0;
  position: relative;
}
.section-head {
  margin-bottom: 48px;
}
.section-head .tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--cyan-light);
  background: rgba(47, 216, 255, 0.08);
  border: 1px solid rgba(47, 216, 255, 0.18);
  padding: 5px 14px;
  border-radius: 30px;
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}
.section-head h2 {
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 600;
  color: var(--title-color);
  line-height: 1.35;
  letter-spacing: -0.01em;
}
.section-head p {
  margin-top: 12px;
  font-size: 16px;
  max-width: 680px;
  color: var(--muted);
}
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, rgba(160,190,255,0.05), rgba(47,216,255,0.2), rgba(160,190,255,0.05));
}

/* 顶部状态条 */
.site-topbar {
  height: 36px;
  background: rgba(6, 10, 20, 0.9);
  border-bottom: 1px solid rgba(160, 190, 255, 0.08);
  display: flex;
  align-items: center;
  font-size: 12px;
  color: var(--muted);
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.topbar-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: #9fb7d0;
}
.topbar-status i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px rgba(53, 214, 160, 0.6);
  display: inline-block;
}

/* 品牌导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 8, 16, 0.7);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(160, 190, 255, 0.08);
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.site-header.is-scrolled {
  background: rgba(5, 8, 16, 0.88);
  border-bottom-color: rgba(47, 216, 255, 0.2);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}
.header-inner {
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  color: var(--title-color);
  font-weight: 700;
  font-size: 23px;
  line-height: 1.2;
}
.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(47,216,255,0.2), rgba(139,123,255,0.12));
  border: 1px solid rgba(47,216,255,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
  font-size: 19px;
  font-weight: 800;
  position: relative;
  box-shadow: 0 0 24px rgba(47,216,255,0.08);
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}
.brand-text strong {
  color: var(--title-color);
  font-size: 22px;
  letter-spacing: 0.01em;
}
.brand-text span {
  font-size: 11px;
  color: var(--cyan-light);
  background: rgba(47,216,255,0.1);
  border: 1px solid rgba(47,216,255,0.2);
  padding: 0 8px;
  border-radius: 20px;
  font-weight: 400;
  width: fit-content;
  line-height: 1.6;
  margin-top: 2px;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.main-nav .nav-link {
  color: #aebeda;
  font-size: 15px;
  padding: 9px 16px;
  border-radius: 30px;
  transition: color 0.2s, background 0.2s;
  font-weight: 400;
}
.main-nav .nav-link:hover {
  color: var(--cyan-light);
  background: rgba(47, 216, 255, 0.06);
}
.main-nav .nav-link.active {
  color: #031018;
  background: var(--cyan);
  font-weight: 600;
  box-shadow: 0 0 20px rgba(47,216,255,0.22);
}
.header-cta {
  margin-left: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-btn);
  background: var(--cyan);
  color: #031018;
  font-weight: 600;
  border: 1px solid rgba(168, 240, 255, 0.4);
  box-shadow: 0 4px 20px rgba(47,216,255,0.22);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s;
}
.header-cta:hover {
  background: var(--cyan-light);
  color: #031018;
  transform: translateY(-1px);
  box-shadow: 0 6px 28px rgba(47,216,255,0.3);
}
.header-cta:active {
  transform: translateY(0) scale(0.98);
}
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--border);
  color: var(--title-color);
  font-size: 19px;
  align-items: center;
  justify-content: center;
}
.mobile-nav {
  display: none;
  position: absolute;
  top: 76px;
  left: 0; right: 0;
  background: rgba(5, 8, 16, 0.98);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px 24px;
  flex-direction: column;
  gap: 2px;
  box-shadow: 0 18px 40px rgba(0,0,0,0.4);
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  color: var(--text-color);
  padding: 13px 14px;
  border-radius: 12px;
  font-size: 16px;
}
.mobile-nav a.active { color: var(--cyan); background: rgba(47,216,255,0.07); }
.mobile-nav a.cta {
  color: #031018;
  background: var(--cyan);
  font-weight: 600;
  text-align: center;
  margin-top: 8px;
}

/* Hero */
.hero {
  position: relative;
  min-height: min(90vh, 920px);
  display: flex;
  align-items: center;
  overflow: hidden;
  background-image: linear-gradient(180deg, rgba(5,8,16,0.14) 0%, rgba(5,8,16,0.82) 82%), url("/assets/images/backpic/back-1.webp");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(47,216,255,0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(47,216,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at center, black, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at center, black, transparent 80%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  right: -120px;
  top: -80px;
  width: 560px;
  height: 560px;
  background: radial-gradient(circle, rgba(47,216,255,0.22), rgba(47,216,255,0.04) 50%, transparent 70%);
  filter: blur(20px);
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 90px 0 80px;
  width: 100%;
}
.hero-inner {
  max-width: 760px;
}
.hero-status {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}
.hero-status .badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(5, 12, 24, 0.65);
  border: 1px solid rgba(160,190,255,0.16);
  color: #c6d6ea;
  font-size: 13px;
  border-radius: 30px;
  padding: 6px 16px;
  backdrop-filter: blur(10px);
}
.hero-status .badge i {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px rgba(53,214,160,0.65);
}
.hero-status .badge .dot-cyan {
  background: var(--cyan);
  box-shadow: 0 0 10px rgba(47,216,255,0.6);
}
.hero h1 {
  color: var(--title-color);
  font-size: clamp(32px, 5.4vw, 54px);
  line-height: 1.28;
  font-weight: 700;
  margin: 14px 0 20px;
  letter-spacing: 0;
  text-shadow: 0 4px 28px rgba(0,0,0,0.5);
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(120deg, var(--cyan-light), var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  font-size: clamp(16px, 2.2vw, 19px);
  color: #a6bad4;
  max-width: 660px;
  line-height: 1.9;
  margin-bottom: 34px;
  text-shadow: 0 2px 16px rgba(0,0,0,0.35);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  margin-bottom: 28px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 30px;
  border-radius: var(--radius-btn);
  font-weight: 600;
  font-size: 16px;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s, border-color 0.2s;
  cursor: pointer;
}
.btn:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }
.btn:active { transform: translateY(1px) scale(0.98); }
.btn-primary {
  background: var(--cyan);
  color: #031018;
  border-color: rgba(168, 240, 255, 0.4);
  box-shadow: 0 6px 24px rgba(47,216,255,0.25);
}
.btn-primary:hover {
  background: var(--cyan-light);
  color: #031018;
  transform: translateY(-2px);
  box-shadow: 0 10px 34px rgba(47,216,255,0.35);
}
.btn-ghost {
  background: rgba(10, 21, 34, 0.72);
  color: var(--cyan-light);
  border-color: rgba(47,216,255,0.35);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  background: rgba(47,216,255,0.08);
  border-color: rgba(47,216,255,0.6);
  transform: translateY(-2px);
  color: #fff;
}
.hero-note {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-size: 13px;
  flex-wrap: wrap;
}
.hero-note .line {
  width: 36px; height: 1px;
  background: rgba(47,216,255,0.4);
  display: inline-block;
}
.hero-card-deco {
  position: absolute;
  bottom: 40px;
  right: 24px;
  width: 340px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 20px;
  backdrop-filter: blur(15px);
  display: none;
}
@media (min-width: 1024px) {
  .hero-card-deco { display: block; }
}
.hero-card-deco .mini-title {
  display: flex;
  justify-content: space-between;
  color: var(--title-color);
  font-weight: 600;
  margin-bottom: 10px;
}
.hero-card-deco .cell-status { color: var(--green); font-size: 13px; }
.hero-card-deco ul li {
  border-bottom: 1px solid rgba(160,190,255,0.1);
  padding: 7px 0;
  font-size: 13px;
  color: var(--muted);
}
.hero-card-deco ul li strong { color: var(--text-color); font-weight: 500; }

/* 时间线 */
.timeline-section {
  background: rgba(5, 8, 16, 0.65);
}
.timeline {
  position: relative;
  max-width: 960px;
  margin: 0 auto;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 16px;
  bottom: 16px;
  width: 1px;
  border-left: 2px dashed rgba(47,216,255,0.18);
  transform: translateX(-1px);
}
.timeline-item {
  position: relative;
  width: 50%;
  padding: 20px 48px 42px 0;
}
.timeline-item:nth-child(even) {
  left: 50%;
  padding: 20px 0 42px 48px;
}
.timeline-dot {
  position: absolute;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: #0a1622;
  border: 2px solid rgba(47,216,255,0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 13px;
  right: -19px;
  top: 8px;
  box-shadow: 0 0 0 6px rgba(47,216,255,0.05), 0 0 24px rgba(47,216,255,0.15);
  z-index: 2;
}
.timeline-item:nth-child(even) .timeline-dot {
  left: -19px;
  right: auto;
}
.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 26px;
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
  transition: box-shadow 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
  min-height: 190px;
}
.timeline-card:hover {
  border-color: rgba(47,216,255,0.3);
  box-shadow: 0 18px 48px rgba(0, 16, 30, 0.35);
  transform: translateY(-2px);
}
.timeline-num {
  font-family: var(--font-num);
  color: rgba(47,216,255,0.6);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.15em;
  display: block;
  margin-bottom: 6px;
}
.timeline-card h3 {
  color: var(--title-color);
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 12px;
  line-height: 1.4;
}
.timeline-card p {
  font-size: 15px;
  color: var(--text-color);
  line-height: 1.85;
}

/* 亮点区 */
.highlight-section .grid-x { row-gap: 24px; }
.highlight-feature-card {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  height: 100%;
  min-height: 430px;
  background: var(--bg-card);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.highlight-feature-card:hover {
  transform: translateY(-3px);
  border-color: rgba(47,216,255,0.35);
  box-shadow: var(--shadow-hover);
}
.highlight-feature-card .card-img {
  width: 100%;
  height: 100%;
  min-height: 260px;
  object-fit: cover;
  display: block;
  border-bottom: 1px solid var(--border);
}
.highlight-feature-card .card-body {
  padding: 24px 28px 28px;
  flex: 1;
}
.highlight-feature-card .card-body h3 {
  color: var(--title-color);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 10px;
}
.highlight-feature-card .card-body p {
  font-size: 15px;
  color: var(--text-color);
  margin-bottom: 0;
}
.hl-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  height: 100%;
  padding: 26px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, border-color 0.25s, box-shadow 0.25s;
}
.hl-card:hover {
  transform: translateY(-2px);
  border-color: rgba(47,216,255,0.3);
  box-shadow: var(--shadow-hover);
}
.hl-card + .hl-card {
  margin-top: 24px;
}
.hl-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: rgba(47,216,255,0.11);
  border: 1px solid rgba(47,216,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
  font-size: 20px;
  flex-shrink: 0;
}
.hl-card .content h3 {
  color: var(--title-color);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
}
.hl-card .content p {
  font-size: 15px;
  color: var(--text-color);
  margin-bottom: 0;
}

/* 版本对比 */
.version-section {
  background: rgba(10, 21, 34, 0.55);
  border-top: 1px solid rgba(160,190,255,0.06);
  border-bottom: 1px solid rgba(160,190,255,0.06);
}
.compare-grid { row-gap: 18px; }
.version-table {
  width: 100%;
  background: rgba(16, 28, 46, 0.7);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border-collapse: separate;
  border-spacing: 0;
}
.version-table th, .version-table td {
  padding: 20px 22px;
  text-align: center;
  border-bottom: 1px solid rgba(160,190,255,0.08);
}
.version-table th {
  background: rgba(16, 28, 46, 0.6);
  color: var(--title-color);
  font-size: 15px;
  font-weight: 600;
  border-bottom: 1px solid rgba(160,190,255,0.12);
}
.version-table th:first-child {
  text-align: left;
  font-weight: 500;
  color: var(--muted);
  font-size: 14px;
}
.version-table td:first-child {
  text-align: left;
  color: #9db0c8;
  font-size: 14px;
}
.version-table td .cost {
  font-family: var(--font-num);
  color: var(--cyan);
  font-weight: 700;
  font-size: 22px;
  display: block;
}
.version-table td .fee {
  color: var(--muted);
  font-size: 13px;
}
.version-table thead th .ver-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--title-color);
  display: block;
}
.version-table thead .recommend-col {
  background: rgba(47,216,255,0.08);
  border-left: 1px solid rgba(47,216,255,0.18);
  border-right: 1px solid rgba(47,216,255,0.18);
}
.version-table thead .recommend-col .ver-name {
  color: var(--cyan);
}
.version-table thead .recommend-col .ver-fee {
  display: inline-block;
  background: rgba(47,216,255,0.18);
  color: var(--cyan-light);
  font-size: 13px;
  border-radius: 20px;
  padding: 1px 12px;
  margin-top: 6px;
}
.version-table tbody .col-recommend {
  background: rgba(47,216,255,0.03);
  border-left: 1px solid rgba(47,216,255,0.1);
  border-right: 1px solid rgba(47,216,255,0.1);
  color: #c1d7ea;
}
.recommend-mark {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(255,200,87,0.14);
  color: var(--amber);
  border-radius: 20px;
  padding: 1px 10px;
  font-size: 12px;
}
.table-cta-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}
.table-cta-row .btn-link {
  color: var(--text-color);
  border-color: rgba(160,190,255,0.18);
  background: rgba(16,28,46,0.5);
}
.compare-mobile-card {
  display: none;
}
.compare-mobile-card .m-ver {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 16px;
}
.compare-mobile-card .m-ver.recommend {
  border-color: rgba(47,216,255,0.35);
  box-shadow: 0 0 0 1px rgba(47,216,255,0.15), var(--shadow);
}
.compare-mobile-card .m-ver .m-head {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: space-between;
  margin-bottom: 12px;
}
.compare-mobile-card .m-ver h3 {
  color: var(--title-color);
  font-size: 20px;
  font-weight: 600;
}
.compare-mobile-card .m-ver .fee {
  color: var(--cyan);
  font-family: var(--font-num);
  font-weight: 700;
}
.compare-mobile-card .m-ver ul li {
  padding: 8px 0;
  border-bottom: 1px solid rgba(160,190,255,0.08);
  font-size: 14px;
  color: var(--text-color);
  display: flex;
  gap: 8px;
}
.compare-mobile-card .m-ver ul li i {
  color: var(--green);
  font-size: 13px;
  margin-top: 4px;
}

/* CTA */
.cta-section {
  position: relative;
}
.cta-panel {
  position: relative;
  background:
    radial-gradient(ellipse 45% 70% at 80% 20%, rgba(47,216,255,0.12), transparent 60%),
    var(--bg-panel);
  border: 1px solid rgba(47,216,255,0.2);
  border-radius: 28px;
  overflow: hidden;
  padding: 50px 56px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.3);
}
.cta-panel .cta-bg-img {
  position: absolute;
  inset: 0;
  background-image: url("/assets/images/backpic/back-2.webp");
  background-size: cover;
  background-position: center;
  opacity: 0.18;
  pointer-events: none;
}
.cta-inner {
  position: relative;
  z-index: 2;
  display: flex;
  gap: 32px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}
.cta-left { flex: 1 1 380px; }
.cta-left h2 {
  color: var(--title-color);
  font-size: clamp(25px, 4vw, 38px);
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 14px;
}
.cta-left p {
  color: var(--text-color);
  font-size: 16px;
  max-width: 540px;
  line-height: 1.9;
}
.cta-right {
  flex: 0 1 440px;
}
.cta-form {
  background: rgba(5, 10, 18, 0.62);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 28px;
  backdrop-filter: blur(10px);
}
.cta-form .form-tip {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 16px;
  line-height: 1.7;
}
.cta-form input, .cta-form select {
  width: 100%;
  background: rgba(10, 21, 32, 0.8);
  border: 1px solid var(--border);
  color: var(--title-color);
  border-radius: 12px;
  padding: 12px 16px;
  margin-bottom: 12px;
  font-size: 16px;
}
.cta-form input::-moz-placeholder { color: var(--muted); }
.cta-form input::placeholder { color: var(--muted); }
.cta-form input:focus, .cta-form select:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(47,216,255,0.14);
  background: rgba(10, 21, 32, 0.95);
}
.cta-form .btn { width: 100%; }
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 12px;
}
@media (min-width: 640px) and (max-width: 900px) {
  .cta-form { max-width: 520px; }
}

/* 资讯 */
.news-section { background: rgba(5, 8, 16, 0.85); }
.news-window { position: relative; }
.news-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 22px; }
.news-item-feature {
  grid-column: span 7;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
  transition: box-shadow 0.26s ease, border-color 0.26s ease;
}
.news-item-feature:hover {
  border-color: rgba(47,216,255,0.3);
  box-shadow: var(--shadow-hover);
}
.news-feature-cover { height: 208px; background: var(--bg-panel); position: relative; overflow: hidden; }
.news-feature-cover img { width: 100%; height: 100%; object-fit: cover; }
.news-feature-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent, rgba(5,8,16,0.55));
}
.news-feature-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.news-item-meta { display: flex; gap: 10px; align-items: center; margin-bottom: 14px; flex-wrap: wrap; }
.news-cat {
  background: rgba(47,216,255,0.1);
  color: var(--cyan-light);
  font-size: 12px;
  padding: 2px 12px;
  border-radius: 20px;
  border: 1px solid rgba(47,216,255,0.2);
}
.news-date {
  font-family: var(--font-num);
  color: var(--muted);
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.news-item-feature h2, .news-item-feature h3 {
  color: var(--title-color);
  font-size: 19px;
  line-height: 1.5;
  font-weight: 600;
  margin-bottom: 8px;
}
.news-item-feature h2 a, .news-item-feature h3 a {
  color: inherit;
}
.news-item-feature h2 a:hover, .news-item-feature h3 a:hover { color: var(--cyan-light); }
.news-item-feature .news-desc {
  color: var(--text-color);
  font-size: 15px;
  line-height: 1.85;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 14px;
}
.news-read-more {
  margin-top: auto;
  color: var(--cyan);
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.news-list-side { grid-column: span 5; display: flex; flex-direction: column; gap: 22px; }
.news-item-side {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  box-shadow: var(--shadow);
  transition: box-shadow 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.news-item-side:hover {
  transform: translateX(2px);
  border-color: rgba(47,216,255,0.28);
  box-shadow: var(--shadow-hover);
}
.news-side-thumb {
  width: 74px;
  height: 74px;
  border-radius: 14px;
  object-fit: cover;
  background: #0f1b2c;
  flex-shrink: 0;
}
.news-side-body { min-width: 0; }
.news-side-body h3 {
  font-size: 15px;
  line-height: 1.5;
  color: var(--title-color);
  font-weight: 600;
  margin-bottom: 6px;
}
.news-side-body h3 a { color: inherit; }
.news-side-body h3 a:hover { color: var(--cyan-light); }
.news-side-body .news-item-meta { margin-bottom: 0; }
.news-empty {
  text-align: center;
  padding: 70px 20px;
  grid-column: span 12;
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  background: rgba(16, 28, 46, 0.3);
}
.news-empty .empty-icon {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: rgba(47,216,255,0.1);
  color: var(--cyan);
  font-size: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}
.news-empty p { color: var(--muted); font-size: 15px; }

/* FAQ */
.faq-section .grid-x { max-width: 820px; margin: 0 auto; }
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color 0.25s;
}
.faq-item.active {
  border-color: rgba(47,216,255,0.3);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}
.faq-q {
  width: 100%;
  text-align: left;
  padding: 20px 22px;
  font-size: 16px;
  font-weight: 600;
  color: var(--title-color);
  background: transparent;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: color 0.2s;
}
.faq-q:hover { color: var(--cyan-light); }
.faq-q .faq-icon {
  flex: 0 0 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid rgba(47,216,255,0.3);
  color: var(--cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 300;
  transition: background 0.2s, color 0.2s, transform 0.3s;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--cyan);
  color: #031018;
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-a-inner {
  padding: 0 22px 22px;
  color: var(--text-color);
  font-size: 15px;
  line-height: 1.9;
}
.faq-item.active .faq-a { max-height: 500px; }

/* 页脚 */
.site-footer {
  background: #04070e;
  border-top: 1px solid rgba(160,190,255,0.1);
  padding-top: 56px;
  padding-bottom: 24px;
  position: relative;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 70%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(47,216,255,0.3), transparent);
}
.footer-grid .cell { margin-bottom: 32px; }
.footer-about p { color: var(--muted); font-size: 14px; line-height: 1.85; margin-top: 16px; max-width: 360px; }
.footer-title {
  color: var(--title-color);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 8px;
}
.footer-title::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 24px; height: 2px;
  background: var(--cyan);
  border-radius: 2px;
  opacity: 0.6;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  color: #8499b5;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: color 0.2s, transform 0.2s;
}
.footer-links a:hover {
  color: var(--cyan-light);
  transform: translateX(2px);
}
.footer-bottom {
  border-top: 1px solid rgba(160,190,255,0.08);
  padding-top: 22px;
  margin-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: #5e7390;
}
.footer-bottom a { color: #5e7390; }

/* 内部通用头条（分类页会用到） */
.page-banner {
  position: relative;
  padding: 76px 0 64px;
  background-image: url("/assets/images/backpic/back-3.webp");
  background-size: cover;
  background-position: center 20%;
  border-bottom: 1px solid var(--border);
}
.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(5, 8, 16, 0.8);
}
.page-banner-content { position: relative; z-index: 2; }

/* 动画 */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-up { animation: fadeUp 0.5s ease both; }
.delay-1 { animation-delay: 0.08s; }
.delay-2 { animation-delay: 0.16s; }

/* 响应式 */
@media (max-width: 1024px) {
  :root { --space-section: 88px; }
  .container { padding: 0 20px; }
  .hl-card { flex-direction: column; align-items: flex-start; }
  .hl-card .hl-icon { width: 46px; height: 46px; border-radius: 13px; }
  .highlight-feature-card { min-height: 0; }
}
@media (max-width: 900px) {
  .main-nav, .header-cta { display: none; }
  .menu-toggle {
    display: inline-flex;
  }
  .hero { background-position: 78% top; }
  .hero { min-height: 0; }
  .hero-content { padding: 70px 0 60px; }
  .timeline-item, .timeline-item:nth-child(even) {
    width: 88%;
    left: 8%;
    padding: 16px 20px 32px 24px;
  }
  .timeline::before { left: 13px; }
  .timeline-dot, .timeline-item:nth-child(even) .timeline-dot {
    left: -38px;
    right: auto;
    width: 32px; height: 32px;
    font-size: 12px;
  }
  .timeline-item:nth-child(odd), .timeline-item:nth-child(even) {
    left: 6%;
    width: 88%;
    padding-left: 34px;
  }
  .timeline::before { left: 8px; }
  .timeline-dot, .timeline-item:nth-child(even) .timeline-dot { left: -40px; }
  .cta-panel { padding: 34px 26px; }
  .cta-right { flex: 1 1 100%; }
}
@media (max-width: 768px) {
  .news-item-feature { grid-column: span 12; }
  .news-list-side { grid-column: span 12; }
  .news-item-side { padding: 16px; }
  .section { padding: 68px 0; }
  .page-banner { padding: 52px 0 44px; }
}
@media (max-width: 640px) {
  :root { --space-section: 56px; }
  .header-inner { height: 68px; }
  .mobile-nav { top: 68px; }
  .brand-text strong { font-size: 19px; }
  .brand-mark { width: 36px; height: 36px; font-size: 16px; }
  .brand-text span { font-size: 10px; }
  .container { padding: 0 16px; }
  .hero-content { padding: 54px 0 48px; }
  .hero-sub { font-size: 15px; }
  .hero-actions .btn { flex: 1 1 100%; }
  .section-head h2 { font-size: 26px; }
  .hl-card { padding: 20px; gap: 14px; }
  .version-table { display: none; }
  .compare-mobile-card { display: block; }
  .highlight-feature-card .card-img { min-height: 210px; }
  .tab-pane { padding: 1rem; }
}

/* roulang page: category1 */
:root {
  --bg: #050810;
  --bg-2: #0A1522;
  --panel: rgba(16, 28, 46, 0.7);
  --primary: #2FD8FF;
  --primary-light: #A8F0FF;
  --violet: #8B7BFF;
  --green: #35D6A0;
  --warning: #FFC857;
  --danger: #FF6F91;
  --title: #E8F3FF;
  --text: #B7C9E0;
  --muted: #7C90AD;
  --border: rgba(160, 190, 255, 0.16);
  --radius: 16px;
  --radius-lg: 24px;
  --radius-full: 40px;
  --shadow: 0 14px 40px rgba(0, 10, 24, 0.25);
  --shadow-hover: 0 20px 48px rgba(0, 10, 30, 0.32);
  --glow: 0 0 0 1px rgba(47, 216, 255, 0.18), 0 14px 44px rgba(47, 216, 255, 0.7);
  --transition: all .28s ease;
  --font-sans: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans CJK SC", system-ui, sans-serif;
  --font-mono: "DIN Alternate", "Roboto Mono", ui-monospace, monospace;
}

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

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  background-image:
    radial-gradient(900px 600px at 12% 6%, rgba(47, 216, 255, 0.07), transparent 68%),
    radial-gradient(760px 520px at 88% 2%, rgba(139, 123, 255, 0.06), transparent 65%),
    radial-gradient(1000px 760px at 50% 105%, rgba(47, 216, 255, 0.04), transparent 72%);
  background-color: var(--bg);
  background-repeat: no-repeat;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color .22s ease;
}

a:hover {
  color: var(--primary-light);
}

img {
  max-width: 100%;
  display: inline-block;
  vertical-align: middle;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  color: var(--title);
  line-height: 1.3;
  font-weight: 700;
}

h1 {
  font-size: clamp(30px, 4.5vw, 52px);
}

h2 {
  font-size: clamp(26px, 3vw, 36px);
}

h3 {
  font-size: clamp(18px, 1.8vw, 22px);
}

p {
  margin: 0 0 14px;
}

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

.container {
  max-width: 1260px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.mobile-only {
  display: none;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 46px;
  padding: 0 30px;
  border-radius: var(--radius-full);
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  border: 1px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
  box-shadow: var(--shadow);
  text-decoration: none;
}

.btn-primary {
  background: var(--primary);
  color: #03131d;
  border-color: rgba(168, 240, 255, .7);
}

.btn-primary:hover {
  background: var(--primary-light);
  color: #02121e;
  transform: translateY(-2px);
  box-shadow: 0 16px 40px rgba(47, 216, 255, 0.22), var(--shadow);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 6px 18px rgba(47, 216, 255, .2);
}

.btn-secondary {
  background: rgba(11, 24, 40, 0.6);
  color: var(--title);
  border-color: rgba(150, 200, 255, .28);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  color: var(--primary-light);
  border-color: rgba(47, 216, 255, .6);
  background: rgba(14, 34, 58, .78);
  transform: translateY(-2px);
}

.btn-secondary:active {
  transform: translateY(0);
}

.btn-sm {
  min-height: 38px;
  padding: 0 20px;
  font-size: 14px;
}

.btn-block {
  width: 100%;
}

button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

/* Top bar */
.topbar {
  background: rgba(3, 7, 15, .84);
  border-bottom: 1px solid rgba(160, 190, 255, .08);
  font-size: 13px;
  color: var(--muted);
  min-height: 36px;
  display: flex;
  align-items: center;
  z-index: 20;
  position: relative;
}

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

.topbar-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: #b1cbe6;
}

.topbar-status i {
  color: var(--green);
  font-size: 9px;
  text-shadow: 0 0 8px rgba(53, 214, 160, .9);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 8, 16, .72);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(160, 190, 255, .08);
  transition: background .35s ease, border-color .35s ease;
}

.site-header.scrolled {
  background: rgba(5, 8, 16, .86);
  border-bottom-color: rgba(47, 216, 255, .12);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 78px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, #14b8c4, #2f86ff);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 1px rgba(168, 240, 255, .12), 0 8px 20px rgba(47, 216, 255, .18);
  color: #fff;
  font-size: 19px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.brand-text strong {
  font-size: 22px;
  letter-spacing: .01em;
  color: var(--title);
}

.brand-text span {
  font-size: 12px;
  letter-spacing: .28em;
  color: var(--primary);
  margin-top: 4px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  justify-content: center;
}

.main-nav .nav-link {
  position: relative;
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 8px;
  transition: color .22s ease, background .22s ease;
  text-decoration: none;
}

.main-nav .nav-link:hover {
  color: var(--primary-light);
  background: rgba(47, 216, 255, .06);
}

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

.main-nav .nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 18px;
  height: 2px;
  border-radius: 4px;
  background: var(--primary);
  box-shadow: 0 0 12px rgba(47, 216, 255, .8);
}

.header-cta {
  display: flex;
  align-items: center;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--title);
  font-size: 18px;
  align-items: center;
  justify-content: center;
}

.nav-toggle:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* Section generic */
.section {
  padding-top: 92px;
  padding-bottom: 104px;
  position: relative;
}

.section-header {
  max-width: 820px;
  margin: 0 auto 54px;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--primary);
  border: 1px solid rgba(47, 216, 255, .25);
  padding: 5px 16px;
  border-radius: 40px;
  background: rgba(47, 216, 255, .06);
  margin-bottom: 16px;
}

.section-header p {
  font-size: 17px;
  color: var(--text);
  margin-top: 16px;
}

.section-dark {
  background: rgba(4, 12, 22, .48);
}

/* Page hero for category 1 */
.page-hero {
  position: relative;
  padding: 90px 0 92px;
  overflow: hidden;
  background-size: cover;
  background-position: center;
  isolation: isolate;
  border-bottom: 1px solid rgba(160, 190, 255, .08);
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(5, 8, 16, .82) 0%, rgba(5, 8, 16, .68) 44%, rgba(5, 8, 16, .2) 100%);
  z-index: -2;
}

.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: radial-gradient(circle at 76% 32%, rgba(47, 216, 255, .11), transparent 30%),
    radial-gradient(circle at 18% 26%, rgba(139, 123, 255, .08), transparent 26%);
}

.hero-content {
  max-width: 840px;
}

.hero-content .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 14px;
}

.hero-content .breadcrumb a {
  color: var(--primary);
}

.hero-content .breadcrumb i {
  font-size: 12px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 26px;
}

.hero-meta .chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: #d4eaff;
  font-size: 13px;
  background: rgba(12, 26, 43, .62);
  border: 1px solid var(--border);
  padding: 4px 14px;
  border-radius: 30px;
}

.hero-meta .chip i {
  color: var(--green);
  font-size: 9px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

/* Version timeline */
.version-timeline {
  overflow: hidden;
}

.timeline-container {
  position: relative;
}

.timeline-container::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 20px;
  bottom: 20px;
  width: 1px;
  transform: translateX(-50%);
  background: linear-gradient(to bottom, transparent, rgba(47, 216, 255, .42) 14%, rgba(47, 216, 255, .24) 82%, transparent);
}

.timeline-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  position: relative;
  margin-bottom: 52px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 42px;
  height: 42px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: #0b1924;
  border: 1px solid rgba(47, 216, 255, .42);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--primary);
  z-index: 2;
  box-shadow: 0 0 22px rgba(47, 216, 255, .18), inset 0 0 10px rgba(47, 216, 255, .12);
}

.timeline-content, .timeline-media {
  position: relative;
}

.timeline-content .tl-num {
  color: var(--violet);
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: .2em;
  margin-bottom: 8px;
  display: inline-block;
}

.timeline-content h3 {
  margin-bottom: 10px;
}

.timeline-content p {
  color: var(--text);
  margin-top: 8px;
}

.timeline-media {
  box-sizing: border-box;
}

.timeline-media .media-frame {
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(7, 16, 28, .6);
  box-shadow: var(--shadow);
}

.timeline-media img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  display: block;
}

.timeline-item:nth-child(odd) .timeline-content {
  grid-column: 1;
  text-align: right;
}

.timeline-item:nth-child(odd) .timeline-media {
  grid-column: 2;
}

.timeline-item:nth-child(even) .timeline-content {
  grid-column: 2;
  text-align: left;
}

.timeline-item:nth-child(even) .timeline-media {
  grid-column: 1;
}

.timeline-item:nth-child(odd) .timeline-content .tl-num {
  text-align: right;
}

/* Feature asymmetric */
.feature-area {
  background: linear-gradient(180deg, rgba(3, 7, 16, .45), rgba(4, 12, 22, .82));
}

.feature-grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: 28px;
  align-items: stretch;
}

.feature-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-top: 1px solid rgba(168, 240, 255, .28);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  position: relative;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-2px);
  border-color: rgba(47, 216, 255, .32);
  box-shadow: var(--shadow-hover), 0 0 0 1px rgba(47, 216, 255, .12);
}

.feature-split {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.feature-lead-media {
  height: 240px;
  overflow: hidden;
  position: relative;
}

.feature-lead-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-lead-body {
  padding: 26px 30px 32px;
  flex: 1;
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: rgba(47, 216, 255, .1);
  border: 1px solid rgba(47, 216, 255, .2);
  color: var(--primary);
  font-size: 20px;
  margin-bottom: 16px;
}

.feature-card h3 {
  margin-bottom: 10px;
}

.feature-card p {
  color: var(--text);
  margin: 0;
}

.small-feature {
  display: flex;
  gap: 18px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-top: 1px solid rgba(168, 240, 255, .28);
  border-radius: var(--radius-lg);
  padding: 24px 24px;
  transition: var(--transition);
  align-items: flex-start;
}

.small-feature:hover {
  transform: translateY(-2px);
  border-color: rgba(47, 216, 255, .28);
  box-shadow: var(--shadow-hover);
}

.small-feature .feature-icon {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  font-size: 17px;
  margin: 0;
  border-radius: 12px;
}

.small-feature h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.small-feature p {
  font-size: 14px;
  margin: 0;
}

/* Version compare table */
.compare-section {
  padding-top: 96px;
  padding-bottom: 104px;
}

.compare-table-wrap {
  overflow-x: auto;
}

.compare-table {
  width: 100%;
  min-width: 760px;
  border-collapse: separate;
  border-spacing: 0 12px;
  background: transparent;
}

.compare-table thead th {
  color: var(--title);
  padding: 20px 16px;
  text-align: center;
  background: rgba(9, 21, 34, .88);
  border: 1px solid var(--border);
}

.compare-table thead th:first-child {
  text-align: left;
  border-radius: 16px 0 0 16px;
  width: 25%;
}

.compare-table thead th:last-child {
  border-radius: 0 16px 16px 0;
}

.compare-table thead th.recommend {
  background: rgba(10, 25, 40, .94);
  border-color: rgba(47, 216, 255, .38);
  box-shadow: 0 0 24px rgba(47, 216, 255, .08);
  position: relative;
}

.compare-table .rec-tag {
  display: inline-block;
  background: rgba(47, 216, 255, .2);
  color: var(--primary-light);
  border: 1px solid rgba(47, 216, 255, .14);
  font-size: 11px;
  letter-spacing: .06em;
  padding: 2px 10px;
  border-radius: 30px;
  margin-top: 8px;
}

.compare-table tbody td {
  background: rgba(10, 21, 35, .78);
  padding: 20px 16px;
  text-align: center;
  border-top: 1px solid rgba(160, 190, 255, .06);
  border-bottom: 1px solid rgba(160, 190, 255, .06);
  color: var(--text);
  font-size: 14px;
}

.compare-table tbody td:first-child {
  text-align: left;
  color: #d6e7ff;
  border-left: 1px solid var(--border);
  border-radius: 12px 0 0 12px;
}

.compare-table tbody td:last-child {
  border-right: 1px solid var(--border);
  border-radius: 0 12px 12px 0;
}

.compare-table tbody tr:hover td {
  background: rgba(11, 24, 40, .86);
}

.compare-table .version-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--title);
  margin-bottom: 4px;
}

.compare-table .version-desc {
  font-size: 12px;
  color: var(--muted);
}

.cell-yes {
  color: var(--green);
  font-size: 15px;
}

.cell-partial {
  color: var(--warning);
  font-size: 15px;
}

.cell-no {
  color: var(--muted);
  font-size: 15px;
  opacity: .8;
}

.compare-cta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 28px;
}

.compare-cta .cta-col {
  text-align: center;
}

.compare-mobile {
  display: none;
}

/* CTA band */
.cta-band {
  position: relative;
  overflow: hidden;
  padding: 88px 0;
}

.cta-panel {
  position: relative;
  padding: 40px 40px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-top: 1px solid rgba(168, 240, 255, .3);
  border-radius: 32px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.cta-panel::before {
  content: "";
  position: absolute;
  top: -140px;
  right: -80px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(47, 216, 255, .18), transparent 65%);
  pointer-events: none;
}
.cta-panel::after {
  content: "";
  position: absolute;
  bottom: -130px;
  left: 20%;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(139, 123, 255, .15), transparent 65%);
  pointer-events: none;
}

.cta-inner {
  position: relative;
  z-index: 2;
  display:flex;
  flex-wrap:wrap;
  gap: 36px;
  align-items:center;
  justify-content:space-between;
}

.cta-inner h2 {
  font-size: clamp(26px, 3vw, 38px);
  margin-bottom: 12px;
}

.cta-inner strong {
  color: var(--primary);
}

.cta-copy {
  max-width: 620px;
}

/* FAQ */
.faq-wrap {
  max-width: 880px;
  margin: 0 auto;
}

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

.faq-item {
  background: rgba(10, 21, 36, .64);
  border: 1px solid rgba(160, 190, 255, .1);
  border-radius: 18px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color .25s ease, background .25s ease;
}

.faq-item.open {
  border-color: rgba(47, 216, 255, .24);
  background: rgba(12, 24, 41, .76);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  width: 100%;
  background: transparent;
  color: var(--title);
  font-size: 16px;
  font-weight: 600;
  padding: 20px 22px;
  text-align: left;
  transition: color .2s ease;
}

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

.faq-question .faq-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 1px solid rgba(47, 216, 255, .34);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--primary);
  transition: transform .3s ease, rotate .3s ease;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
  visibility: hidden;
}

.faq-item.open .faq-answer {
  max-height: 320px;
  visibility: visible;
}

.faq-answer-content {
  padding: 0 22px 22px;
  color: var(--text);
  font-size: 15px;
}

/* Footer */
.site-footer {
  background: #030710;
  border-top: 1px solid rgba(160, 190, 255, .08);
  padding: 68px 0 0;
  color: var(--muted);
}

.footer-grid {
  padding-bottom: 46px;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 1px;
  padding-bottom: 10px;
}

.site-footer p {
  font-size: 14px;
  line-height: 1.9;
  margin-top: 12px;
}

.footer-title {
  color: var(--title);
  font-size: 15px;
  letter-spacing: .1em;
  margin-bottom: 16px;
}

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

.footer-links li {
  margin-bottom: 9px;
}

.footer-links a {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
  transition: color .2s ease;
}

.footer-links a i {
  margin-right: 4px;
  opacity: .7;
  font-size: 12px;
}

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

.footer-bottom {
  border-top: 1px solid rgba(160, 190, 255, .08);
  padding: 20px 0 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  align-items: center;
  justify-content: space-between;
  color: #61758e;
  font-size: 13px;
}

.footer-bottom a {
  color: #8095ad;
}

/* Responsive */
@media (max-width: 1024px) {
  .header-inner {
    gap: 14px;
  }

  .main-nav .nav-link {
    font-size: 14px;
    padding: 8px 9px;
  }

  .header-cta .btn {
    font-size: 14px;
    padding: 0 16px;
  }

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

  .cta-panel {
    padding: 32px;
  }

  .cta-inner {
    justify-content: flex-start;
  }
}

@media (max-width: 860px) {
  .topbar-status {
    display: none;
  }

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

  .main-nav {
    position: absolute;
    top: 78px;
    left: 20px;
    right: 20px;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    background: rgba(4, 10, 19, .98);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    border-radius: 16px;
    padding: 14px;
    display: none;
    z-index: 100;
  }

  .site-header.nav-open .main-nav {
    display: flex;
  }

  .main-nav .nav-link {
    padding: 12px 10px;
    border-radius: 8px;
  }

  .main-nav .nav-link.active::after {
    left: 18px;
    transform: none;
    width: 16px;
  }

  .header-cta .btn {
    display: none;
  }

  .site-header.nav-open .header-cta .btn {
    display: flex;
  }

  .timeline-container::before {
    left: 20px;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 16px;
    padding-left: 54px;
  }

  .timeline-dot {
    left: 20px;
    top: 50%;
    width: 36px;
    height: 36px;
    transform: translate(-50%, -50%);
    font-size: 12px;
  }

  .timeline-item:nth-child(odd) .timeline-content,
  .timeline-item:nth-child(even) .timeline-content {
    grid-column: 1;
    text-align: left;
  }

  .timeline-item:nth-child(odd) .timeline-media,
  .timeline-item:nth-child(even) .timeline-media {
    grid-column: 1;
  }

  .compare-table {
    display: none;
  }

  .compare-mobile {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .compare-mobile .compare-card {
    display: block;
    background: var(--panel);
    border: 1px solid var(--border);
    border-top: 1px solid rgba(168, 240, 255, .26);
    border-radius: 18px;
    padding: 24px;
    box-shadow: var(--shadow);
  }

  .compare-mobile .compare-name {
    font-size: 18px;
    color: var(--title);
    font-weight: 700;
    margin-bottom: 4px;
  }

  .compare-mobile .compare-tag {
    display: inline-block;
    background: rgba(47, 216, 255, .18);
    color: var(--primary-light);
    font-size: 12px;
    padding: 2px 10px;
    border-radius: 30px;
    margin-top: 8px;
    margin-bottom: 14px;
  }

  .compare-mobile ul {
    list-style: none;
    margin: 0;
    padding: 0;
  }

  .compare-mobile ul li {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 1px dashed rgba(160, 190, 255, .1);
    font-size: 14px;
    color: var(--text);
  }

  .compare-mobile ul li i {
    color: var(--green);
  }

  .compare-cta {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

@media (max-width: 640px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .section {
    padding-top: 64px;
    padding-bottom: 72px;
  }

  .page-hero {
    padding: 58px 0 66px;
  }

  .cta-panel {
    padding: 28px 20px;
  }

  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .cta-actions {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .btn {
    width: 100%;
  }

  .header-cta .btn {
    display: none;
  }

  .footer-bottom {
    justify-content: flex-start;
  }

  .timeline-media img {
    height: 190px;
  }

  .feature-lead-media {
    height: 180px;
  }
}

/* roulang page: article */
:root {
  --bg:#050810;
  --bg-deep:#0A1522;
  --card:rgba(16,28,46,.72);
  --primary:#2FD8FF;
  --primary-light:#A8F0FF;
  --purple:#8B7BFF;
  --green:#35D6A0;
  --warning:#FFC857;
  --danger:#FF6F91;
  --title:#E8F3FF;
  --body:#B7C9E0;
  --muted:#7C90AD;
  --line:rgba(160,190,255,.16);
  --radius:16px;
  --radius-lg:24px;
  --radius-full:40px;
  --shadow:0 14px 40px rgba(0,10,24,.25);
  --transition:all .25s ease;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans CJK SC",system-ui,-apple-system,sans-serif;
  --font-mono:"DIN Alternate","Roboto Mono",ui-monospace,SFMono-Regular,monospace;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-sans);
  background:var(--bg);
  color:var(--body);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  min-height:100vh;
  background-image:
    radial-gradient(circle at 8% 12%,rgba(47,216,255,.08),transparent 32%),
    radial-gradient(circle at 92% 4%,rgba(139,123,255,.08),transparent 28%),
    radial-gradient(circle at 100% 86%,rgba(47,216,255,.05),transparent 30%);
  background-attachment:fixed;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  opacity:.5;
  background-image:linear-gradient(rgba(160,190,255,.02) 1px,transparent 1px),linear-gradient(90deg,rgba(160,190,255,.02) 1px,transparent 1px);
  background-size:64px 64px;
  z-index:0;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:var(--transition)}
a:hover{color:#fff}
ul,ol{padding-left:1.4rem}
button{font-family:inherit}
h1,h2,h3,h4{color:var(--title);line-height:1.3;font-weight:600}
.container{max-width:1260px;margin:0 auto;padding-left:24px;padding-right:24px;position:relative;z-index:1}
.page-main{position:relative;z-index:1}

.site-topbar{
  background:rgba(5,8,16,.82);
  border-bottom:1px solid rgba(160,190,255,.08);
  height:36px;
  display:flex;
  align-items:center;
  font-size:12px;
}

.topbar-inner{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  max-width:1260px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.topbar-inner i{margin-right:7px;color:var(--primary);font-size:12px}
.topbar-text{display:inline-flex;align-items:center;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-status{display:inline-flex;align-items:center;color:var(--green);white-space:nowrap;font-size:12px}
.topbar-status i.fa-circle{font-size:8px;margin-right:6px;color:var(--green)}
.topbar-status .status-pulse{margin-right:7px}

.site-header{
  position:sticky;
  top:0;
  z-index:99;
  background:rgba(5,8,16,.72);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(160,190,255,.10);
  transition:background .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.site-header.is-scrolled{
  background:rgba(5,8,16,.84);
  border-bottom-color:rgba(47,216,255,.2);
  box-shadow:0 18px 44px rgba(0,10,24,.26);
}
.header-inner{
  min-height:84px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.brand{
  display:inline-flex;
  align-items:center;
  justify-content:flex-start;
  gap:12px;
  color:var(--title);
  flex-shrink:0;
}
.brand-mark{
  width:44px;
  height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:14px;
  background:linear-gradient(135deg,rgba(47,216,255,.25),rgba(139,123,255,.2));
  color:var(--primary);
  font-size:22px;
  border:1px solid rgba(47,216,255,.3);
  box-shadow:0 8px 24px rgba(47,216,255,.18);
}
.brand-mark i{color:var(--primary)}
.brand-text{display:inline-flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:21px;letter-spacing:.4px;color:var(--title)}
.brand-text span{font-size:12px;color:var(--primary);letter-spacing:1.5px;margin-top:3px}

.site-nav-wrap{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  flex:1;
  gap:22px;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:26px;
  margin:0;
  padding:0;
  list-style:none;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  font-size:15px;
  color:var(--body);
  padding:8px 2px;
  font-weight:500;
  transition:var(--transition);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-2px;
  width:100%;
  height:2px;
  background:var(--primary);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .28s ease;
}
.nav-link:hover{color:#fff}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:#fff}
.nav-cta{
  background:var(--primary);
  color:#03121b;
  border:none;
  padding:11px 22px;
  border-radius:var(--radius-full);
  font-weight:600;
  font-size:14px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  transition:var(--transition);
  box-shadow:0 8px 28px rgba(47,216,255,.18);
  cursor:pointer;
}
.nav-cta:hover{background:var(--primary-light);transform:translateY(-2px);color:#03121b}
.nav-cta:active{transform:translateY(0)}
.menu-toggle{
  display:none;
  width:42px;
  height:42px;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(16,28,46,.5);
  color:var(--title);
  font-size:18px;
  cursor:pointer;
  transition:var(--transition);
}
.menu-toggle:hover{color:var(--primary);border-color:var(--primary)}
.menu-toggle[aria-expanded="true"] i::before{content:"\f00d"}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  border-radius:var(--radius-full);
  padding:13px 24px;
  font-weight:600;
  font-size:15px;
  line-height:1;
  border:1px solid transparent;
  transition:var(--transition);
  cursor:pointer;
  text-align:center;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--primary);color:#03121b;box-shadow:0 10px 32px rgba(47,216,255,.16)}
.btn-primary:hover{background:var(--primary-light);color:#03121b;transform:translateY(-2px);box-shadow:0 14px 38px rgba(47,216,255,.25)}
.btn-ghost{border-color:var(--line);color:var(--title);background:rgba(16,28,46,.35)}
.btn-ghost:hover{border-color:var(--primary);color:#fff;transform:translateY(-2px)}
.btn-md{padding:11px 20px;font-size:14px}
.btn-lg{padding:15px 30px;font-size:16px}
.btn-block{width:100%}

.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:3px;
  border-radius:4px;
}

.article-hero{
  position:relative;
  overflow:hidden;
  padding:76px 0 128px;
  background:linear-gradient(135deg,rgba(5,8,16,.9),rgba(10,21,34,.72)),url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.article-hero::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    radial-gradient(circle at 25% 30%,rgba(47,216,255,.18),transparent 35%),
    radial-gradient(circle at 80% 12%,rgba(139,123,255,.14),transparent 30%),
    linear-gradient(rgba(160,190,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(160,190,255,.03) 1px,transparent 1px);
  background-size:auto,auto,42px 42px,42px 42px;
}
.article-hero .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--muted);
}
.breadcrumb a{color:var(--body);transition:var(--transition)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb i{font-size:11px;color:var(--muted)}
.breadcrumb span{color:var(--primary)}
.hero-label{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:34px;
  padding:6px 14px;
  border-radius:var(--radius-full);
  background:rgba(47,216,255,.1);
  border:1px solid rgba(47,216,255,.24);
  color:var(--primary);
  font-size:13px;
  font-weight:500;
}
.hero-label i{font-size:12px}
.article-hero h1{
  margin-top:18px;
  max-width:960px;
  font-size:clamp(32px,5vw,50px);
  font-weight:700;
  color:var(--title);
  line-height:1.28;
  letter-spacing:.2px;
  text-wrap:balance;
}
.post-meta{
  margin-top:28px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px 22px;
  font-size:14px;
  color:var(--muted);
}
.post-meta-item{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--muted);
}
.post-meta-item i{color:var(--primary);font-size:14px}
.post-meta-item time{color:var(--body);font-variant-numeric:tabular-nums;font-family:var(--font-mono)}
.post-meta-divider{width:1px;height:14px;background:var(--line)}
.article-cat-label{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 13px;
  border-radius:var(--radius-full);
  background:rgba(139,123,255,.14);
  border:1px solid rgba(139,123,255,.28);
  color:#d6ccff;
  font-size:13px;
  font-weight:500;
}
.article-cat-label i{font-size:11px;color:var(--purple)}

.article-shell-wrap{
  position:relative;
  z-index:4;
}
.article-shell{
  max-width:900px;
  margin:-76px auto 0;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:52px 64px 44px;
  box-shadow:var(--shadow);
  position:relative;
  border-top:1px solid rgba(255,255,255,.16);
}
.article-shell::before{
  content:"";
  position:absolute;
  top:-1px;
  left:36px;
  right:36px;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(168,240,255,.5),transparent);
}
.article-outline{
  display:none;
  margin-bottom:40px;
  padding:26px 30px;
  background:rgba(8,18,30,.65);
  border:1px solid var(--line);
  border-radius:var(--radius);
}
.article-outline-header{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--primary);
  font-weight:600;
  font-size:15px;
  margin-bottom:14px;
}
.article-outline ul{
  list-style:none;
  padding:0;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:6px 22px;
}
.article-outline li{
  font-size:14px;
  line-height:1.6;
}
.article-outline a{
  color:var(--body);
  transition:var(--transition);
  display:inline-block;
}
.article-outline a::before{
  content:"";
  display:inline-block;
  width:5px;
  height:5px;
  border-radius:50%;
  background:var(--purple);
  margin-right:9px;
  vertical-align:middle;
}
.article-outline a:hover{color:var(--primary);transform:translateX(2px)}
.article-body{
  font-size:17px;
  line-height:2;
  color:var(--body);
  word-wrap:break-word;
}
.article-body > * + *{margin-top:1em}
.article-body p{line-height:2}
.article-body h2{
  font-size:clamp(24px,3vw,31px);
  font-weight:700;
  color:var(--title);
  margin:52px 0 20px;
  padding-left:14px;
  border-left:3px solid var(--primary);
  line-height:1.4;
  scroll-margin-top:110px;
}
.article-body h3{
  font-size:21px;
  color:var(--title);
  margin:34px 0 12px;
  font-weight:600;
  scroll-margin-top:110px;
}
.article-body a{color:var(--primary);text-decoration:underline;text-decoration-style:dotted;text-underline-offset:4px}
.article-body a:hover{color:var(--primary-light)}
.article-body ul,.article-body ol{margin:20px 0;padding-left:1.5em}
.article-body li{margin:10px 0}
.article-body ul li::marker{color:var(--primary)}
.article-body ol li::marker{color:var(--purple);font-family:var(--font-mono)}
.article-body blockquote{
  border-left:3px solid var(--green);
  background:rgba(53,214,160,.07);
  padding:18px 24px;
  border-radius:0 var(--radius) var(--radius) 0;
  color:var(--body);
  margin:28px 0;
  font-size:16px;
}
.article-body blockquote p{margin:0}
.article-body img{
  border-radius:var(--radius);
  max-width:100%;
  height:auto;
  margin:28px auto;
  box-shadow:var(--shadow);
  border:1px solid var(--line);
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:28px 0;
  display:block;
  overflow-x:auto;
  border-radius:var(--radius);
  background:rgba(8,18,30,.45);
}
.article-body th,.article-body td{
  padding:14px 16px;
  text-align:left;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.article-body th{color:var(--title);font-weight:600;background:rgba(47,216,255,.08)}
.article-body td{color:var(--body);font-size:15px}
.article-body code{
  background:rgba(47,216,255,.08);
  border:1px solid rgba(47,216,255,.15);
  padding:1px 7px;
  border-radius:6px;
  font-family:var(--font-mono);
  font-size:14px;
  color:var(--primary-light);
}
.article-body hr{border:none;height:1px;background:var(--line);margin:40px 0}
.article-bottom-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-top:50px;
  padding-top:26px;
  border-top:1px solid var(--line);
}
.article-bottom-meta .tag-list{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.article-tag{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:5px 13px;
  font-size:12px;
  border-radius:var(--radius-full);
  background:rgba(139,123,255,.1);
  border:1px solid rgba(139,123,255,.25);
  color:#c6bfff;
  transition:var(--transition);
}
.article-tag:hover{border-color:var(--purple);color:#fff}
.back-home-link{
  display:inline-flex;
  align-items:center;
  gap:9px;
  color:var(--primary);
  font-size:14px;
  font-weight:600;
  transition:var(--transition);
}
.back-home-link i{font-size:14px}
.back-home-link:hover{color:var(--primary-light);gap:13px}

.article-empty{
  text-align:center;
  padding:72px 20px 60px;
}
.article-empty-icon{
  width:76px;
  height:76px;
  margin:0 auto 24px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  background:rgba(255,111,145,.1);
  border:1px solid rgba(255,111,145,.3);
  color:var(--danger);
  font-size:30px;
}
.article-empty h2{
  font-size:26px;
  color:var(--title);
  margin-bottom:10px;
}
.article-empty p{color:var(--muted);margin-bottom:26px}
.article-empty .btn{display:inline-flex}

.related-section{
  padding:104px 0 30px;
  position:relative;
  z-index:1;
}
.section-heading{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:18px;
  margin-bottom:38px;
}
.section-heading h2{
  font-size:clamp(28px,4vw,36px);
  font-weight:700;
  color:var(--title);
  line-height:1.3;
}
.section-heading h2 span{color:var(--primary)}
.section-heading .section-note{
  color:var(--muted);
  font-size:14px;
  max-width:430px;
}
.related-grid{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:24px;
  align-items:stretch;
}
.related-panel{
  display:grid;
  grid-template-rows:1fr 1fr;
  gap:24px;
}

.related-card-large{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:calc(var(--radius-lg) + 4px);
  overflow:hidden;
  position:relative;
  display:flex;
  flex-direction:column;
  transition:var(--transition);
  box-shadow:var(--shadow);
}
.related-card-large:hover{border-color:rgba(47,216,255,.45);transform:translateY(-3px);box-shadow:0 20px 56px rgba(0,20,40,.32)}
.related-card-large:active{transform:translateY(0)}
.related-card-image{
  position:relative;
  overflow:hidden;
  flex:1.1;
  min-height:220px;
}
.related-card-image img{
  width:100%;
  height:100%;
  object-fit:cover;
  position:absolute;
  inset:0;
  transition:transform .6s cubic-bezier(.23,1,.32,1);
}
.related-card-large:hover .related-card-image img{transform:scale(1.04)}
.related-card-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(5,8,16,.05) 25%,rgba(5,8,16,.88) 100%);
}
.related-card-content{
  position:relative;
  z-index:2;
  padding:26px 28px;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.related-card-content .card-detail{
  font-size:13px;
  color:var(--primary);
  display:flex;
  align-items:center;
  gap:8px;
}
.related-card-content .card-detail i{font-size:11px}
.related-card-content h3{
  font-size:22px;
  font-weight:600;
  color:var(--title);
  line-height:1.45;
  margin:0;
}
.related-card-content p{
  color:var(--muted);
  font-size:15px;
  line-height:1.8;
  margin:0;
}

.related-card-small{
  display:flex;
  align-items:center;
  gap:18px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:14px;
  transition:var(--transition);
  box-shadow:0 10px 30px rgba(0,10,24,.16);
}
.related-card-small:hover{border-color:rgba(47,216,255,.4);background:rgba(20,34,56,.75);transform:translateX(4px)}
.related-card-small:hover .fas{color:var(--primary)}
.related-card-small-img{
  width:96px;
  height:88px;
  border-radius:12px;
  flex-shrink:0;
  overflow:hidden;
  background:rgba(10,21,34,.6);
}
.related-card-small-img img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.related-card-small-body{flex:1}
.related-card-small-body h3{
  font-size:16px;
  font-weight:600;
  color:var(--title);
  line-height:1.5;
  margin:0 0 6px;
}
.related-card-small-body p{
  color:var(--muted);
  font-size:13px;
  line-height:1.5;
  margin:0;
}
.related-go{
  display:inline-flex;
  width:32px;
  height:32px;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  border:1px solid var(--line);
  color:var(--muted);
  flex-shrink:0;
  transition:var(--transition);
  font-size:13px;
}
.related-card-small:hover .related-go{color:var(--primary);border-color:var(--primary);background:rgba(47,216,255,.08)}

.site-footer{
  position:relative;
  z-index:1;
  margin-top:90px;
  background:rgba(3,5,10,.92);
  border-top:1px solid var(--line);
  padding-top:62px;
}
.footer-grid{
  row-gap:36px;
  margin-bottom:42px;
}
.site-footer .brand{font-size:15px}
.site-footer .brand p{
  margin-top:18px;
  color:var(--muted);
  font-size:14px;
  line-height:1.9;
  max-width:440px;
}
.footer-title{
  font-size:15px;
  font-weight:600;
  color:var(--title);
  margin-bottom:20px;
  letter-spacing:.3px;
  display:flex;
  align-items:center;
  gap:8px;
}
.footer-title::after{
  content:"";
  width:18px;
  height:2px;
  background:var(--primary);
  border-radius:2px;
  opacity:.7;
}
.footer-links{
  list-style:none;
  margin:0;
  padding:0;
}
.footer-links li{
  margin-bottom:12px;
}
.footer-links a{
  display:inline-flex;
  align-items:center;
  gap:9px;
  color:var(--muted);
  font-size:14px;
  transition:var(--transition);
}
.footer-links a:hover{
  color:var(--primary);
  transform:translateX(3px);
}
.footer-links a i{
  color:var(--primary);
  opacity:.7;
}
.footer-links a .fa-circle{
  font-size:7px;
  color:var(--green);
  opacity:1;
}
.footer-bottom{
  border-top:1px solid rgba(160,190,255,.09);
  padding:23px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  color:var(--muted);
  font-size:13px;
}
.footer-bottom .legal-info{
  display:flex;
  align-items:center;
  gap:14px;
}
.footer-bottom .dot{width:3px;height:3px;border-radius:50%;background:var(--line);display:inline-block}
@media (max-width:1200px){
  .container{max-width:1140px}
}
@media (max-width:1023px){
  .site-topbar{height:auto;padding:6px 0}
  .topbar-inner{flex-wrap:wrap;gap:6px 16px}
  .topbar-text{font-size:11px}
  .topbar-status{font-size:11px}
  .header-inner{min-height:68px}
  .menu-toggle{display:inline-flex}
  .site-nav-wrap{
    position:fixed;
    top:74px;
    left:0;
    right:0;
    margin:0 16px;
    z-index:98;
    background:rgba(5,9,16,.98);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:22px 20px;
    box-shadow:0 28px 80px rgba(0,0,0,.45);
    flex-direction:column;
    align-items:stretch;
    gap:20px;
    opacity:0;
    visibility:hidden;
    transform:translateY(-8px);
    transition:opacity .25s ease,transform .25s ease,visibility .25s;
  }
  .site-nav-wrap.is-open{
    opacity:1;
    visibility:visible;
    transform:none;
  }
  .main-nav{
    flex-direction:column;
    align-items:flex-start;
    gap:6px;
  }
  .nav-link{
    width:100%;
    padding:10px 14px;
    border-radius:10px;
    font-size:16px;
  }
  .nav-link:hover,.nav-link.active{background:rgba(47,216,255,.08)}
  .nav-link::after{display:none}
  .main-nav .nav-cta{width:100%;justify-content:center;margin-top:6px}
  .nav-cta{width:100%;justify-content:center}
  .article-shell{padding:36px 28px}
  .article-outline ul{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .related-card-large{min-height:auto}
  .related-card-large .related-card-content h3{font-size:20px}
  .related-card-content p{display:none}
  .related-card-large-image{min-height:210px}
  .footer-bottom{flex-direction:column;justify-content:flex-start}
}
@media (max-width:767px){
  .site-topbar .topbar-status span{display:none}
  .topbar-text span{max-width:250px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .header-inner{gap:10px}
  .brand-text strong{font-size:19px}
  .brand-mark{width:38px;height:38px;font-size:18px;border-radius:12px}
  .brand-text span{font-size:10px}
  .article-hero{padding:52px 0 112px}
  .breadcrumb{gap:7px;font-size:12px}
  .hero-label{margin-top:24px}
  .article-hero h1{font-size:31px;line-height:1.35}
  .post-meta{gap:10px 16px;margin-top:22px}
  .article-shell{margin:-64px auto 0;padding:26px 20px 20px;border-radius:18px}
  .article-side-shell{padding:26px 20px}
  .article-body{font-size:16px;line-height:1.9}
  .article-body h2{font-size:23px}
  .article-bottom-meta{flex-direction:column;align-items:flex-start}
  .related-section{padding-top:72px}
  .section-heading{margin-bottom:26px}
  .section-heading h2{font-size:27px}
  .related-grid{gap:18px}
  .related-panel{gap:18px}
  .related-card-small{padding:10px}
  .related-card-small-img{width:78px;height:78px}
  .related-card-small-img img{width:78px;height:78px}
  .related-card-small-body p{display:none}
  .related-card-content h3{font-size:18px}
  .site-footer{padding-top:48px;margin-top:66px}
  .footer-grid{margin-bottom:24px}
  .footer-bottom{text-align:center}
}
@media (max-width:520px){
  .container{padding-left:16px;padding-right:16px}
  .topbar-inner{padding-left:16px;padding-right:16px}
  .header-inner{gap:7px}
  .brand-mark{width:35px;height:35px;font-size:16px}
  .brand-text strong{font-size:17px}
  .brand-text span{letter-spacing:.6px}
  .nav-cta span{display:none}
  .article-shell{padding:20px 15px 18px}
  .article-outline{padding:18px 16px}
  .article-empty{padding:42px 8px}
  .article-tag{font-size:11px;padding:5px 10px}
  .related-card-large{min-height:auto}
  .related-card-large .related-card-content{padding:20px}
  .related-card-large .related-card-content h3{font-size:18px}
  .related-card-large-image{min-height:180px}
  .related-card-small-img{width:66px;height:76px}
  .related-card-small-img img{width:66px;height:76px}
  .related-card-small-body h3{font-size:14px}
  .related-go{display:none}
  .footer-grid .cell{padding-left:0;padding-right:0}
}

/* roulang page: category2 */
:root{
  --bg:#050810;
  --bg-deep:#04060c;
  --bg-2:#0A1522;
  --bg-card:rgba(16,28,46,0.72);
  --cyan:#2FD8FF;
  --cyan-light:#A8F0FF;
  --violet:#8B7BFF;
  --green:#35D6A0;
  --amber:#FFC857;
  --danger:#FF6F91;
  --text:#E8F3FF;
  --body:#B7C9E0;
  --muted:#7C90AD;
  --border:rgba(160,190,255,0.16);
  --radius-lg:24px;
  --radius:16px;
  --shadow:0 14px 40px rgba(0,10,24,0.25);
  --shadow-soft:0 18px 60px rgba(0,15,40,0.18);
  --font-sans:"PingFang SC","Microsoft YaHei","HarmonyOS Sans SC","Noto Sans CJK SC",system-ui,sans-serif;
  --font-mono:"DIN Alternate","Roboto Mono",ui-monospace,monospace;
  --section-space:96px;
  --header-h:76px;
}
*,
*::before,
*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  min-height:100vh;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--body);
  background-color:var(--bg);
  background-image:
    radial-gradient(ellipse at 20% -8%,rgba(47,216,255,0.08),transparent 34%),
    radial-gradient(ellipse at 86% 12%,rgba(139,123,255,0.06),transparent 30%),
    radial-gradient(ellipse at 58% 92%,rgba(47,216,255,0.045),transparent 36%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--cyan);text-decoration:none;transition:color .25s,background .25s,border-color .25s,box-shadow .25s,transform .25s;}
a:hover{color:var(--cyan-light);}
p{margin:0 0 1em;}
h1,h2,h3,h4{color:var(--text);line-height:1.35;margin:0;}
ul{list-style:none;margin:0;padding:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;line-height:inherit;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px;}
.container{max-width:1260px;margin-inline:auto;padding-inline:24px;width:100%;}
.section{padding:var(--section-space) 0;}
.section-head{max-width:840px;margin:0 auto 56px;text-align:center;}
.section-head .eyebrow{margin-bottom:14px;}
.section-head h2{font-size:clamp(28px,3.4vw,38px);font-weight:600;margin-bottom:16px;}
.section-head p{font-size:16px;color:var(--muted);margin-bottom:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;
  color:var(--cyan);
}
.eyebrow::before{content:"";width:24px;height:1px;background:linear-gradient(90deg,transparent,var(--cyan));display:inline-block;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:52px;padding:14px 30px;border-radius:40px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .3s,box-shadow .3s,background .3s,color .3s,border-color .3s;
}
.btn-primary{background:var(--cyan);color:#021422;box-shadow:0 10px 30px rgba(47,216,255,.22);}
.btn-primary:hover{background:var(--cyan-light);color:#021422;transform:translateY(-2px);box-shadow:0 14px 42px rgba(47,216,255,.3);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 18px rgba(47,216,255,.2);}
.btn-outline{border-color:var(--border);color:var(--text);background:rgba(255,255,255,.02);}
.btn-outline:hover{border-color:rgba(47,216,255,.55);color:var(--cyan-light);transform:translateY(-2px);background:rgba(47,216,255,.05);}
.btn-outline:active{transform:translateY(0);}
.btn-sm{min-height:44px;padding:10px 22px;font-size:14px;}

.logo,
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:44px;height:44px;border-radius:14px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:20px;color:#07131f;
  background:linear-gradient(135deg,var(--cyan),var(--cyan-light));
  box-shadow:0 8px 26px rgba(47,216,255,.24);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:19px;font-weight:800;letter-spacing:.02em;color:var(--text);}
.brand-text span{font-size:12px;letter-spacing:.14em;color:var(--muted);}

.topbar{height:36px;background:rgba(4,10,17,.88);border-bottom:1px solid rgba(160,190,255,.08);font-size:12px;color:var(--muted);}
.topbar .container{display:flex;align-items:center;justify-content:space-between;height:100%;}
.topbar i{color:var(--cyan);margin-right:6px;}
.topbar-status{display:inline-flex;align-items:center;gap:7px;}
.topbar-status i{font-size:8px;color:var(--green);}

.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(5,8,16,.72);
  border-bottom:1px solid rgba(160,190,255,.10);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  transition:background .3s,box-shadow .3s,border-color .3s;
}
.site-header.is-scrolled{background:rgba(5,8,16,.92);box-shadow:0 8px 40px rgba(1,5,12,.35);}
.header-inner{display:flex;align-items:center;min-height:var(--header-h);gap:26px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px;}
.main-nav .nav-link{
  padding:9px 18px;border-radius:40px;
  font-size:15px;font-weight:500;color:var(--body);
}
.main-nav .nav-link:hover{color:var(--text);background:rgba(47,216,255,.06);}
.main-nav .nav-link.active{color:#021c29;background:var(--cyan);font-weight:600;box-shadow:0 6px 20px rgba(47,216,255,.18);}
.header-tools{margin-left:auto;display:flex;align-items:center;gap:14px;}
.menu-toggle{display:none;width:44px;height:44px;padding:0;border-radius:12px;border:1px solid var(--border);background:rgba(255,255,255,.03);color:var(--text);cursor:pointer;align-items:center;justify-content:center;font-size:20px;transition:border-color .2s,color .2s;}
.menu-toggle:hover{border-color:var(--cyan);color:var(--cyan);}

.guide-hero{position:relative;overflow:hidden;padding:72px 0 84px;}
.hero-backdrop{
  position:absolute;inset:0;z-index:-2;opacity:.30;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.hero-backdrop::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(ellipse at 30% 20%,rgba(5,8,16,.35),transparent 45%),
    linear-gradient(90deg,var(--bg) 4%,rgba(5,8,16,.82) 45%,rgba(5,8,16,.55) 100%);
}
.hero-grid-pattern{
  position:absolute;inset:0;z-index:-1;opacity:.05;
  background-image:linear-gradient(rgba(160,190,255,.18) 1px,transparent 1px),linear-gradient(90deg,rgba(160,190,255,.18) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:radial-gradient(circle at 65% 35%,#000,transparent 70%);
  mask-image:radial-gradient(circle at 65% 35%,#000,transparent 70%);
}
.guide-kicker{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:40px;
  border:1px solid rgba(47,216,255,.24);
  color:var(--cyan-light);background:rgba(47,216,255,.06);
  font-size:13px;font-weight:500;letter-spacing:.06em;
  margin-bottom:24px;
}
.guide-hero h1{
  font-size:clamp(34px,4.6vw,52px);line-height:1.2;font-weight:700;
  max-width:700px;margin-bottom:22px;color:#F2FAFF;
}
.guide-sub{max-width:680px;font-size:18px;line-height:1.9;color:#AFC5DD;margin-bottom:34px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-actions .btn{margin-right:0;}
.hero-safe-line{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;
  margin-top:38px;font-size:13px;color:var(--muted);
}
.hero-safe-line span{display:inline-flex;align-items:center;gap:7px;white-space:nowrap;}
.hero-safe-line i{color:var(--green);}
.hero-card{
  position:relative;border-radius:28px;overflow:hidden;
  border:1px solid rgba(160,190,255,.2);
  box-shadow:var(--shadow-soft);
}
.hero-card img{width:100%;height:340px;object-fit:cover;}
.hero-card-cap{
  position:absolute;left:16px;right:16px;bottom:16px;
  padding:14px 18px;border-radius:18px;
  background:rgba(5,10,18,.78);border:1px solid rgba(160,190,255,.2);
  color:var(--text);backdrop-filter:blur(12px);
  font-size:14px;display:flex;align-items:center;gap:12px;
}
.hero-card-cap i{font-size:14px;color:var(--cyan);}

.brand-note{
  display:inline-flex;align-items:flex-start;gap:14px;
  padding:18px 22px;border-radius:18px;
  border:1px solid rgba(47,216,255,.13);
  background:rgba(47,216,255,.04);
  color:#93A9C2;font-size:14px;line-height:1.75;
}
.brand-note i{color:var(--cyan);margin-top:5px;}

.guide-map{margin-top:-8px;padding-top:70px;}
.map-media-card{
  position:relative;min-height:410px;
  border-radius:28px;overflow:hidden;display:flex;align-items:flex-end;
  box-shadow:var(--shadow);border:1px solid var(--border);
}
.map-media-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.map-media-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,8,16,.18) 20%,rgba(5,8,16,.88) 92%);}
.map-card-content{position:relative;z-index:2;padding:30px;color:var(--text);}
.map-card-content .tag{display:inline-flex;margin-bottom:14px;font-size:12px;letter-spacing:.1em;color:#021a26;background:var(--amber);padding:5px 12px;border-radius:30px;font-weight:600;}
.map-card-content h3{font-size:22px;font-weight:600;margin-bottom:10px;}
.map-card-content p{color:#C4D6E8;font-size:15px;margin-bottom:16px;}
.map-card-content .more-link{display:inline-flex;align-items:center;gap:7px;font-weight:600;color:var(--cyan-light);}

.map-mini-card{
  border-radius:20px;border:1px solid var(--border);
  background:var(--bg-card);box-shadow:var(--shadow-soft);
  padding:22px;display:flex;gap:18px;margin-bottom:20px;
  transition:transform .3s,border-color .3s,box-shadow .3s;
}
.map-mini-card:hover{transform:translateY(-3px);border-color:rgba(47,216,255,.45);box-shadow:0 20px 48px rgba(0,12,32,.24);}
.map-icon{flex:0 0 48px;height:48px;border-radius:15px;display:inline-flex;align-items:center;justify-content:center;background:rgba(47,216,255,.1);color:var(--cyan);font-size:20px;}
.map-mini-card h3{font-size:17px;margin:2px 0 7px;}
.map-mini-card p{font-size:14px;color:var(--muted);margin:0;line-height:1.7;}
.map-mini-card .card-link{display:inline-flex;align-items:center;gap:5px;margin-top:10px;font-size:13px;color:var(--cyan);}

.steps-section{background:rgba(10,21,34,.42);}
.steps-window{
  position:relative;max-width:1040px;margin:0 auto;
  border-radius:32px;padding:58px 40px;
  background:linear-gradient(180deg,rgba(16,28,46,.45),rgba(6,12,20,.72));
  border:1px solid rgba(160,190,255,.12);
  box-shadow:var(--shadow-soft);
  overflow:hidden;
}
.steps-window::before{content:"";position:absolute;inset:0;pointer-events:none;border-top:1px solid rgba(255,255,255,.06);border-radius:32px;}
.step-block{
  position:relative;
  border-radius:26px;
  border:1px solid transparent;
  background:transparent;
  padding:22px 0;
}
.step-block + .step-block{border-top:1px dashed rgba(160,190,255,.16);}
.step-copy{padding-left:20px;padding-right:20px;}
.step-media{margin:0;}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:40px;border-radius:14px;margin-bottom:18px;
  color:var(--cyan);background:rgba(47,216,255,.1);
  font-family:var(--font-mono);font-weight:700;font-size:15px;
  border:1px solid rgba(47,216,255,.18);
}
.step-copy h3{font-size:22px;font-weight:600;margin-bottom:12px;}
.step-copy p{font-size:15px;line-height:1.9;color:#A9BED6;margin-bottom:18px;max-width:620px;}
.tip-note{
  display:flex;gap:12px;padding:14px 16px;border-radius:16px;
  background:rgba(255,200,87,.07);border:1px solid rgba(255,200,87,.16);
  font-size:14px;line-height:1.8;color:#D8C7A0;
}
.tip-note i{color:var(--amber);margin-top:5px;font-size:14px;}
.media-plate{
  border-radius:22px;overflow:hidden;border:1px solid var(--border);
  box-shadow:0 22px 50px rgba(0,10,25,.22);
}
.media-plate img{width:100%;height:250px;object-fit:cover;}
.media-caption{padding:13px 18px;background:rgba(5,10,18,.72);font-size:13px;color:var(--muted);display:flex;align-items:center;gap:9px;}
.media-caption i{color:var(--green);font-size:10px;}

.prepare-grid{gap:0 24px;}
.prepare-visual{
  border-radius:28px;overflow:hidden;border:1px solid rgba(160,190,255,.16);
  box-shadow:var(--shadow);position:relative;
}
.prepare-visual img{width:100%;height:100%;min-height:360px;object-fit:cover;}
.prepare-visual .visual-cap{
  position:absolute;left:16px;right:16px;bottom:16px;
  padding:16px 20px;border-radius:18px;
  background:rgba(5,8,16,.78);backdrop-filter:blur(10px);
  color:var(--text);font-size:15px;border:1px solid var(--border);
  display:flex;gap:10px;align-items:center;
}
.prepare-visual .visual-cap i{color:var(--cyan);}
.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.check-card{
  padding:22px;border-radius:20px;background:var(--bg-card);
  border:1px solid var(--border);box-shadow:var(--shadow);
  transition:transform .3s,border-color .3s,background .3s;
}
.check-card:hover{transform:translateY(-3px);border-color:rgba(47,216,255,.42);}
.check-icon{
  display:inline-flex;width:38px;height:38px;border-radius:12px;align-items:center;justify-content:center;
  background:rgba(53,214,160,.1);color:var(--green);font-size:17px;margin-bottom:14px;
  border:1px solid rgba(53,214,160,.18);
}
.check-card h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.check-card p{margin:0;font-size:14px;line-height:1.75;color:var(--muted);}

.scene-section{background:rgba(10,21,34,.32);}
.scene-card{
  border-radius:26px;padding:34px;height:100%;
  background:linear-gradient(180deg,rgba(255,255,255,.04),transparent 30%),var(--bg-card);
  border:1px solid var(--border);box-shadow:var(--shadow-soft);
  position:relative;overflow:hidden;
}
.scene-card::before{content:"";position:absolute;left:0;top:24px;width:4px;height:64px;border-radius:0 8px 8px 0;background:var(--cyan);}
.scene-icon{width:58px;height:58px;border-radius:18px;background:rgba(47,216,255,.12);display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--cyan);margin-bottom:20px;}
.scene-card h3{font-size:22px;font-weight:600;margin-bottom:14px;}
.scene-list{margin:16px 0 4px;}
.scene-list li{display:flex;align-items:flex-start;gap:10px;margin-bottom:9px;font-size:15px;color:#A9BED6;}
.scene-list li i{color:var(--green);margin-top:7px;font-size:12px;}

.notice-section{padding-top:var(--section-space);}
.notice-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.notice-card{
  display:flex;gap:18px;padding:24px;border-radius:22px;
  background:var(--bg-card);border:1px solid var(--border);
  box-shadow:var(--shadow-soft);
  transition:border-color .3s,transform .3s;
}
.notice-card:hover{border-color:rgba(47,216,255,.35);transform:translateY(-2px);}
.notice-card.warn .notice-symbol{background:rgba(255,200,87,.12);color:var(--amber);border-color:rgba(255,200,87,.2);}
.notice-card.success .notice-symbol{background:rgba(53,214,160,.12);color:var(--green);border-color:rgba(53,214,160,.2);}
.notice-card.cyan .notice-symbol{background:rgba(47,216,255,.12);color:var(--cyan);border-color:rgba(47,216,255,.2);}
.notice-symbol{flex:0 0 48px;height:48px;border-radius:15px;display:flex;align-items:center;justify-content:center;font-size:18px;border:1px solid var(--border);}
.notice-card h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.notice-card p{font-size:14px;color:var(--muted);margin:0;line-height:1.8;}
.notice-card .steps-list-mini{margin-top:12px;padding-left:18px;}
.notice-card .steps-list-mini li{list-style:disc;margin-bottom:4px;font-size:14px;color:#A9BED6;}
.notice-card.warn p{color:#C5B58F;}

.faq-section .faq-container{max-width:900px;margin:0 auto 52px;}
.faq-item{
  border-radius:20px;border:1px solid var(--border);
  background:rgba(16,28,46,.55);margin-bottom:16px;overflow:hidden;
  transition:border-color .3s,background .3s;
}
.faq-item.open{border-color:rgba(47,216,255,.4);background:rgba(16,28,46,.82);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:0;padding:20px 24px;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-q:hover{color:var(--cyan-light);}
.faq-q .fa-solid{transition:transform .3s;color:var(--cyan);flex:0 0 28px;}
.faq-item.open .faq-q .fa-solid{transform:rotate(45deg);}
.faq-a{
  display:grid;grid-template-rows:0fr;transition:grid-template-rows .35s ease;
}
.faq-item.open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{overflow:hidden;}
.faq-a-inner p{padding:0 24px 22px;color:var(--muted);font-size:15px;line-height:1.9;margin:0;}

.cta-section{padding-bottom:100px;}
.cta-panel{
  position:relative;overflow:hidden;border-radius:32px;
  border:1px solid rgba(47,216,255,.3);
  background:linear-gradient(120deg,rgba(10,25,40,.9),rgba(20,18,50,.82));
  padding:64px;display:flex;align-items:center;
}
.cta-panel::before{
  content:"";position:absolute;right:-180px;top:-180px;width:440px;height:440px;
  background:radial-gradient(circle,rgba(47,216,255,.22),transparent 60%);
}
.cta-panel::after{content:"";position:absolute;left:45%;bottom:-240px;width:420px;height:420px;background:radial-gradient(circle,rgba(139,123,255,.16),transparent 60%);}
.cta-content{position:relative;z-index:2;}
.cta-content h2{font-size:clamp(25px,3.6vw,34px);font-weight:600;margin-bottom:14px;max-width:600px;}
.cta-content p{max-width:600px;color:#AFC2D8;}
.cta-actions{position:relative;z-index:2;margin-left:auto;display:flex;flex-direction:column;gap:14px;min-width:240px;}
.cta-actions .btn{width:100%;}
.cta-actions .btn-outline{background:rgba(5,8,16,.3);}

.site-footer{
  background:#03070e;border-top:1px solid rgba(160,190,255,.08);
  padding-top:70px;
}
.footer-grid{padding-bottom:46px;}
.site-footer .brand{margin-bottom:22px;}
.site-footer .footer-about p{font-size:14px;line-height:1.9;color:var(--muted);margin:0;max-width:440px;}
.footer-title{font-size:16px;font-weight:600;margin-bottom:18px;color:var(--text);}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:#8FA2BA;font-size:14px;display:inline-flex;align-items:center;gap:7px;line-height:1.6;}
.footer-links a:hover{color:var(--cyan);transform:translateX(3px);}
.footer-links a i{opacity:.65;}
.footer-bottom{
  border-top:1px solid rgba(160,190,255,.09);
  padding:22px 0 36px;display:flex;flex-wrap:wrap;gap:10px 30px;align-items:center;justify-content:space-between;
}
.footer-bottom p{margin:0;font-size:13px;color:var(--muted);}
.footer-bottom .foot-domain{color:#8FA2BA;font-family:var(--font-mono);}

@media (max-width:1024px){
  :root{--section-space:76px;}
  .main-nav{
    position:fixed;left:16px;right:16px;top:96px;z-index:150;
    background:rgba(6,12,22,.96);border:1px solid var(--border);border-radius:24px;
    flex-direction:column;align-items:stretch;padding:14px;gap:4px;
    opacity:0;pointer-events:none;transform:translateY(-10px);transition:opacity .25s,transform .25s;
    box-shadow:0 30px 90px rgba(0,0,0,.5);
  }
  .main-nav.open{opacity:1;pointer-events:auto;transform:translateY(0);}
  .main-nav .nav-link{justify-content:center;text-align:center;}
  .menu-toggle{display:inline-flex;}
  .header-tools .btn-outline{display:none;}
  .cta-panel{flex-direction:column;align-items:flex-start;gap:34px;padding:48px 34px;}
  .cta-actions{margin-left:0;min-width:100%;flex-direction:row;flex-wrap:wrap;}
  .cta-actions .btn{width:auto;}
}
@media (max-width:767px){
  :root{--section-space:64px;}
  body{font-size:15px;}
  .section-head{margin-bottom:38px;}
  .section-head p{font-size:15px;}
  .container{padding-inline:18px;}
  .step-block{padding:10px 0;}
  .step-copy{padding-left:0;padding-right:0;}
  .media-plate{margin-top:14px;}
  .guide-hero{padding:52px 0 66px;}
  .guide-hero h1{font-size:33px;}
  .guide-sub{font-size:16px;}
  .steps-window{padding:38px 20px;}
  .map-card-content{padding:22px;}
  .map-media-card{min-height:340px;}
  .prepare-visual img{min-height:260px;}
  .check-grid,.notice-grid{grid-template-columns:1fr;}
  .cta-panel{padding:36px 24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .guide-hero h1{font-size:30px;line-height:1.32;}
  .hero-actions .btn{width:100%;}
  .header-tools .btn-sm{display:none;}
  .map-mini-card{padding:18px;gap:12px;}
  .scene-card{padding:26px 22px;}
}

/* roulang page: category3 */
@charset "UTF-8";
:root{
  --bg:#050810;
  --bg-deep:#02050b;
  --bg-layer:#0a1522;
  --glass:rgba(16,28,46,.72);
  --glass-strong:rgba(12,24,40,.86);
  --cyan:#2fd8ff;
  --cyan-hi:#a8f0ff;
  --purple:#8b7bff;
  --green:#35d6a0;
  --warning:#ffc857;
  --danger:#ff6f91;
  --title:#e8f3ff;
  --body:#b7c9e0;
  --muted:#7c90ad;
  --line:rgba(160,190,255,.16);
  --radius:16px;
  --radius-lg:24px;
  --shadow:0 14px 40px rgba(0,10,24,.25);
  --shadow-lift:0 20px 48px rgba(0,10,24,.38), 0 0 0 1px rgba(47,216,255,.08);
  --font:"PingFang SC","Microsoft YaHei","HarmonyOS Sans SC","Noto Sans CJK SC",system-ui,sans-serif;
  --mono:"DIN Alternate","Roboto Mono",ui-monospace,SFMono-Regular,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;background:var(--bg);}
body{
  margin:0;
  background-color:var(--bg);
  color:var(--body);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:-1;
  background:
    radial-gradient(circle at 10% 0%, rgba(139,123,255,.09), transparent 24%),
    radial-gradient(circle at 86% 18%, rgba(47,216,255,.07), transparent 28%),
    radial-gradient(circle at 52% 92%, rgba(47,216,255,.04), transparent 30%);
}
img{max-width:100%;display:block;border:0;}
a{color:var(--cyan);text-decoration:none;transition:color .2s linear,background .2s linear,border-color .2s linear,box-shadow .2s linear,transform .2s ease;}
a:hover{color:var(--cyan-hi);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
ul,ol,dl,p,h1,h2,h3,h4,h5,h6{margin:0;padding:0;}
.container{max-width:1260px;margin:0 auto;padding:0 24px;}
.section{padding:96px 0;position:relative;}
.section-inverse{padding:88px 0;position:relative;background:rgba(6,12,22,.5);}
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}
a:focus-visible,button:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:6px;
}
::selection{background:rgba(47,216,255,.24);color:#fff;}

/* ---------- Top status ---------- */
.top-status{
  min-height:36px;
  background:rgba(3,7,14,.9);
  border-bottom:1px solid rgba(160,190,255,.08);
  backdrop-filter:blur(8px);
  font-size:12px;
  color:var(--muted);
}
.top-status-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:36px;
}
.top-status-message{
  display:flex;
  align-items:center;
  gap:8px;
  overflow:hidden;
  white-space:nowrap;
  text-overflow:ellipsis;
  color:rgba(183,201,224,.82);
}
.top-status-message i{color:var(--green);font-size:11px;}
.status-live{
  display:inline-flex;
  align-items:center;
  gap:7px;
  flex-shrink:0;
  color:var(--cyan-hi);
}
.status-live .dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--green);
  box-shadow:0 0 0 0 rgba(53,214,160,.6);
  animation:pulse 2.2s ease-out infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(53,214,160,.55);}
  70%{box-shadow:0 0 0 8px rgba(53,214,160,0);}
  100%{box-shadow:0 0 0 0 rgba(53,214,160,0);}
}

/* ---------- Header / Navigation ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  min-height:76px;
  display:flex;
  align-items:center;
  background:rgba(5,8,16,.82);
  border-bottom:1px solid transparent;
  backdrop-filter:blur(16px);
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{
  background:rgba(5,8,16,.9);
  border-bottom-color:var(--line);
  box-shadow:0 12px 36px rgba(0,5,15,.32);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:32px;
  width:100%;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:#fff;
}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:42px;
  height:42px;
  border-radius:14px;
  background:linear-gradient(140deg,rgba(47,216,255,.95),rgba(139,123,255,.92));
  color:#04121a;
  font-size:20px;
  box-shadow:0 10px 24px rgba(47,216,255,.15);
}
.brand-text strong{
  display:block;
  font-size:20px;
  line-height:1.1;
  font-weight:700;
  color:var(--title);
  letter-spacing:.2px;
}
.brand-text span{
  display:block;
  margin-top:3px;
  font-size:11px;
  line-height:1.2;
  letter-spacing:.6px;
  color:var(--cyan);
}
.main-nav{
  display:flex;
  align-items:center;
  gap:30px;
  margin:0 auto;
}
.nav-link{
  position:relative;
  padding:9px 2px;
  font-size:15px;
  line-height:1.2;
  color:var(--body);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--cyan);
  opacity:0;
  transform:scaleX(.5);
  transition:transform .25s ease,opacity .25s ease;
}
.nav-link:hover,.nav-link.active{color:#fff;}
.nav-link:hover::after,.nav-link.active::after{opacity:1;transform:scaleX(1);}
.header-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:0 24px;
  height:44px;
  border-radius:40px;
  background:var(--cyan);
  color:#03131c;
  font-size:15px;
  font-weight:700;
  letter-spacing:.2px;
  flex-shrink:0;
  box-shadow:0 12px 28px rgba(47,216,255,.18);
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.header-cta:hover{
  transform:translateY(-2px);
  color:#03131c;
  background:var(--cyan-hi);
  box-shadow:0 16px 32px rgba(47,216,255,.28);
}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(16,28,46,.6);
  color:var(--cyan-hi);
  font-size:18px;
  cursor:pointer;
  line-height:1;
  transition:background .2s,border-color .2s,color .2s;
}
.nav-toggle:hover{background:rgba(47,216,255,.09);color:#fff;}
.nav-toggle:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:0 28px;
  height:50px;
  border-radius:40px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  letter-spacing:.2px;
  line-height:1;
  white-space:nowrap;
  cursor:pointer;
  transition:transform .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease,color .2s ease;
}
.btn-primary{
  background:var(--cyan);
  color:#04131b;
  box-shadow:0 12px 28px rgba(47,216,255,.16);
}
.btn-primary:hover{
  transform:translateY(-2px);
  background:var(--cyan-hi);
  color:#04131b;
  box-shadow:0 18px 34px rgba(47,216,255,.24);
}
.btn-outline{
  border-color:rgba(160,190,255,.34);
  color:var(--title);
  background:rgba(160,190,255,.04);
}
.btn-outline:hover{
  transform:translateY(-2px);
  border-color:rgba(47,216,255,.7);
  color:#fff;
}
.btn-lg{min-width:176px;padding:0 32px;height:54px;font-size:16px;}
.btn i{margin-right:4px;}
@media(max-width:520px){
  .btn-lg{min-width:145px;padding:0 20px;}
}

/* ---------- Category hero ---------- */
.cat-hero{
  position:relative;
  padding:78px 0 96px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(rgba(4,8,16,.9),rgba(7,14,24,.94)),
    radial-gradient(circle at 80% 18%,rgba(47,216,255,.12),transparent 28%),
    radial-gradient(circle at 12% 82%,rgba(139,123,255,.1),transparent 30%),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
}
.cat-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(130,170,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(130,170,255,.035) 1px,transparent 1px);
  background-size:54px 54px;
  mask-image:radial-gradient(circle at center top,transparent 50%,#000 100%);
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
  margin-bottom:34px;
  font-size:13px;
  color:var(--muted);
}
.breadcrumb i{font-size:11px;color:rgba(124,144,173,.6);}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .current{color:var(--body);}
.cat-hero-title{
  max-width:720px;
  font-size:44px;
  line-height:1.28;
  font-weight:700;
  color:var(--title);
  letter-spacing:.3px;
  text-wrap:balance;
}
.cat-hero-title .highlight{
  color:var(--cyan);
}
.hero-lead{
  max-width:660px;
  margin-top:20px;
  font-size:18px;
  line-height:1.9;
  color:#c1d2e8;
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:28px;
}
.tag-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 13px;
  border-radius:999px;
  border:1px solid rgba(160,190,255,.16);
  background:rgba(10,21,34,.6);
  color:var(--body);
  font-size:13px;
}
.tag-chip i{color:var(--green);font-size:12px;}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:16px;
  margin-top:36px;
  align-items:center;
}
.hero-note{
  display:flex;
  align-items:center;
  gap:8px;
  margin-top:18px;
  color:var(--muted);
  font-size:13px;
}
.hero-note i{color:var(--cyan);}

/* hero model card */
.hero-visual{
  padding-top:14px;
}
.security-model{
  position:relative;
  max-width:468px;
  margin-left:auto;
  border-radius:26px;
  padding:22px 22px 26px;
  border:1px solid rgba(160,190,255,.2);
  background:
    linear-gradient(160deg,rgba(47,216,255,.1),rgba(255,255,255,.02) 28%),
    rgba(10,20,34,.74);
  box-shadow:0 30px 74px rgba(0,8,20,.26);
  overflow:hidden;
}
.security-model::before{
  content:"";
  position:absolute;
  left:18px;right:18px;top:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(168,240,255,.72),transparent);
}
.model-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:20px;
  padding-bottom:14px;
  border-bottom:1px solid rgba(160,190,255,.12);
}
.model-title{
  display:inline-flex;
  align-items:center;
  gap:9px;
  color:#fff;
  font-size:15px;
  font-weight:600;
}
.model-title i{color:var(--cyan);font-size:20px;}
.model-ok{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:999px;
  border:1px solid rgba(53,214,160,.3);
  background:rgba(53,214,160,.08);
  color:#c6fff2;
  font-size:12px;
}
.model-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:12px 0;
  gap:12px;
  border-bottom:1px solid rgba(160,190,255,.09);
}
.model-row-label{color:var(--muted);font-size:13px;}
.model-row-value{color:#e5f3ff;font-size:14px;font-weight:500;}
.model-row-value.green{color:var(--green);}
.scan-area{
  margin-top:16px;
  border-radius:16px;
  background:
    linear-gradient(135deg,rgba(47,216,255,.1),rgba(8,15,26,.5));
  border:1px solid rgba(47,216,255,.2);
  padding:14px;
  min-height:112px;
  position:relative;
  overflow:hidden;
}
.scan-line{
  position:absolute;
  left:10px;
  right:10px;
  top:8px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,transparent,var(--cyan),transparent);
  filter:drop-shadow(0 0 6px rgba(47,216,255,.8));
  animation:scan 2.4s ease-in-out infinite alternate;
}
@keyframes scan{
  0%{top:16px;opacity:.4;}
  50%{opacity:1;}
  100%{top:calc(100% - 18px);opacity:.4;}
}
.scan-meta{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:12px;
  color:#9eefff;
  font-size:13px;
}
.scan-meta i{font-size:24px;}

/* ---------- Section headings ---------- */
.section-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:7px;
  margin-bottom:14px;
  padding:6px 12px;
  border-radius:999px;
  border:1px solid rgba(47,216,255,.28);
  background:rgba(47,216,255,.08);
  color:var(--cyan);
  font-size:12px;
  letter-spacing:1.5px;
  text-transform:uppercase;
}
.section-title{
  font-size:32px;
  line-height:1.35;
  color:var(--title);
  font-weight:650;
  letter-spacing:.2px;
}
.section-desc{
  margin-top:14px;
  max-width:760px;
  color:var(--body);
  font-size:16px;
  line-height:1.9;
}

/* ---------- Overview article block ---------- */
.overview-block{
  display:flex;
  flex-direction:column;
  padding:34px 34px 38px;
  border-radius:var(--radius-lg);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  height:100%;
  position:relative;
  overflow:hidden;
}
.overview-block::before{
  content:"";
  position:absolute;
  left:34px;
  right:34px;
  top:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(168,240,255,.5),transparent);
}
.overview-block .icon-round{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:48px;
  height:48px;
  border-radius:16px;
  background:rgba(47,216,255,.1);
  border:1px solid rgba(47,216,255,.22);
  color:var(--cyan);
  font-size:20px;
  margin-bottom:18px;
}
.overview-block h3{
  color:var(--title);
  font-size:21px;
  font-weight:650;
  line-height:1.5;
  margin-bottom:12px;
}
.overview-block p{
  color:var(--body);
  font-size:15px;
  line-height:1.95;
}
.overview-block.no-top{background:linear-gradient(180deg,rgba(16,28,46,.62),rgba(10,21,34,.72));}
.left-panel{
  padding:38px 10px 8px;
}
.left-panel h2{
  font-size:30px;
  line-height:1.4;
}
.text-lead{
  margin-top:18px;
  color:var(--body);
  font-size:16px;
  line-height:2;
}
.text-lead strong{color:var(--cyan-hi);font-weight:600;}
.quote-rule{
  margin-top:26px;
  padding-left:18px;
  border-left:2px solid var(--cyan);
  color:#c6d4e8;
  font-size:15px;
  line-height:2;
}
@media(max-width:1024px){
  .overview-block{margin-bottom:22px;}
  .left-panel{padding-top:0;}
}

/* ---------- Security checklist ---------- */
.audit-section{
  background:rgba(4,9,17,.4);
  border-top:1px solid rgba(160,190,255,.08);
  border-bottom:1px solid rgba(160,190,255,.08);
}
.audit-wrap{
  padding:36px;
  margin-bottom:22px;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:var(--glass);
  box-shadow:var(--shadow);
  height:100%;
  position:relative;
}
.check-list{
  list-style:none;
  margin:8px 0 0;
}
.check-list li{
  display:flex;
  gap:12px;
  padding:13px 0;
  color:var(--body);
  line-height:1.8;
  border-bottom:1px solid rgba(160,190,255,.08);
  font-size:15px;
}
.check-list li:last-child{border-bottom:0;}
.check-list i{
  flex-shrink:0;
  width:24px;
  height:24px;
  margin-top:4px;
  border-radius:8px;
  background:rgba(53,214,160,.1);
  color:var(--green);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:13px;
}
.media-card{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  height:100%;
  min-height:300px;
  background:#0b1626;
}
.media-card img{
  width:100%;
  height:100%;
  object-fit:cover;
  min-height:330px;
}
.media-card::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(200deg,transparent 34%,rgba(3,7,14,.94) 100%);
}
.media-card .media-caption{
  position:absolute;
  left:26px;
  right:26px;
  bottom:22px;
  z-index:3;
  color:#fff;
}
.media-caption strong{
  font-size:22px;
  font-weight:650;
  line-height:1.5;
}
.media-caption span{
  display:block;
  margin-top:7px;
  color:#c4d2e6;
  font-size:14px;
  line-height:1.8;
  max-width:380px;
}
.alert-card{
  margin-top:22px;
  border-radius:20px;
  padding:18px 20px;
  border:1px solid rgba(255,200,87,.2);
  background:rgba(255,200,87,.06);
  color:#f0d6a6;
  display:flex;
  gap:12px;
  font-size:14px;
  line-height:1.8;
}
.alert-card i{color:var(--warning);font-size:17px;margin-top:2px;}

/* ---------- Step / process timeline ---------- */
.process-wrap{
  max-width:960px;
  margin:40px auto 0;
  position:relative;
}
.process-wrap::before{
  content:"";
  position:absolute;
  left:32px;
  top:28px;
  bottom:28px;
  width:1px;
  background:linear-gradient(180deg,rgba(47,216,255,.2),rgba(139,123,255,.18),rgba(47,216,255,.35));
}
.step-row{
  position:relative;
  display:grid;
  grid-template-columns:64px 1fr;
  gap:26px;
  margin-bottom:18px;
}
.step-number{
  position:relative;
  z-index:2;
  width:64px;
  height:64px;
  border-radius:22px;
  background:#0b1625;
  border:1px solid rgba(160,190,255,.2);
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 0 0 6px rgba(5,8,16,.4),0 10px 30px rgba(0,8,25,.28);
}
.step-number span{
  font-family:var(--mono);
  font-weight:700;
  font-size:20px;
  color:var(--cyan);
}
.step-card{
  border-radius:20px;
  border:1px solid var(--line);
  background:rgba(14,25,42,.6);
  padding:24px 26px;
  margin-bottom:8px;
  transition:transform .25s ease,border-color .25s ease,background .25s ease;
}
.step-card:hover{
  transform:translateY(-2px);
  border-color:rgba(47,216,255,.3);
  background:rgba(16,32,51,.68);
}
.step-card h3{
  color:var(--title);
  font-size:20px;
  font-weight:650;
  margin-bottom:9px;
}
.step-card p{color:var(--body);line-height:1.9;font-size:15px;}
.step-card .step-tag{
  display:inline-flex;
  align-items:center;
  gap:7px;
  margin-top:12px;
  color:var(--cyan);
  font-size:13px;
}
@media(max-width:560px){
  .process-wrap::before{left:24px;}
  .step-row{grid-template-columns:48px 1fr;gap:16px;}
  .step-number{width:48px;height:48px;border-radius:15px;}
  .step-number span{font-size:17px;}
  .step-card{padding:20px 18px;}
}

/* ---------- Accordion / FAQ ---------- */
.faq-section{
  background:rgba(4,9,16,.32);
  border-top:1px solid rgba(160,190,255,.08);
}
.faq-heading{
  max-width:760px;
  margin-bottom:44px;
}
.faq-list.accordion{
  background:transparent;
  list-style:none;
  max-width:900px;
  margin:0 auto;
  border-radius:var(--radius-lg);
}
.faq-list .accordion-item{
  list-style:none;
  margin-bottom:14px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:rgba(12,23,39,.68);
  transition:border-color .25s ease,background .25s ease,box-shadow .25s ease;
}
.faq-list .accordion-item:hover{
  border-color:rgba(47,216,255,.24);
}
.faq-list .accordion-item.is-active{
  border-color:rgba(47,216,255,.35);
  box-shadow:0 16px 38px rgba(0,8,26,.22);
}
.faq-list .accordion-title{
  position:relative;
  display:flex;
  align-items:center;
  color:var(--title);
  font-size:16px;
  font-weight:600;
  line-height:1.6;
  padding:21px 54px 21px 24px;
  border-radius:var(--radius);
  background:transparent;
  transition:color .22s ease,background .22s ease;
}
.faq-list .accordion-title:hover,
.faq-list .accordion-item.is-active .accordion-title{
  color:#fff;
  background:rgba(47,216,255,.02);
}
.faq-list .accordion-title::after{
  content:"\f078";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  position:absolute;
  right:22px;
  top:50%;
  width:30px;
  height:30px;
  transform:translateY(-50%);
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  color:var(--cyan);
  font-size:13px;
  background:rgba(47,216,255,.08);
  border:1px solid rgba(47,216,255,.16);
  transition:transform .28s ease,background .28s ease;
}
.faq-list .accordion-item.is-active .accordion-title::after{
  transform:translateY(-50%) rotate(180deg);
  background:rgba(47,216,255,.16);
}
.faq-list .accordion-content{
  display:none;
  padding:0 24px 24px;
  color:var(--body);
  font-size:15px;
  line-height:1.95;
  border-top:1px solid rgba(160,190,255,.1);
  margin:0 24px;
  margin-top:0;
  padding-left:0;
  padding-right:0;
}
.faq-list .accordion-item.is-active .accordion-content{
  display:block;
  margin-top:0;
  padding-top:20px;
}
.faq-more{
  text-align:center;
  margin-top:38px;
}
.faq-more p{
  margin-bottom:18px;
  color:var(--muted);
}

/* ---------- CTA ---------- */
.cta-section{
  position:relative;
  padding:96px 0;
}
.cta-panel{
  position:relative;
  overflow:hidden;
  border-radius:28px;
  border:1px solid rgba(47,216,255,.22);
  padding:60px 64px;
  background:
    linear-gradient(140deg,rgba(16,28,46,.9),rgba(6,15,27,.96)),
    radial-gradient(circle at 85% 20%,rgba(139,123,255,.13),transparent 38%),
    radial-gradient(circle at 12% 100%,rgba(47,216,255,.1),transparent 36%);
  box-shadow:0 26px 80px rgba(0,10,28,.36);
}
.cta-panel::before{
  content:"";
  position:absolute;
  top:0;left:50px;right:50px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(168,240,255,.7),transparent);
}
.cta-panel h2{
  font-size:32px;
  line-height:1.4;
  color:var(--title);
  font-weight:700;
}
.cta-panel .cta-lead{
  margin-top:15px;
  max-width:620px;
  color:var(--body);
  line-height:1.95;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:16px;
  margin-top:34px;
}
.cta-state{
  display:flex;
  flex-wrap:wrap;
  gap:18px;
  margin-top:26px;
  padding-top:24px;
  border-top:1px solid rgba(160,190,255,.12);
  color:var(--muted);
  font-size:13px;
}
.cta-state i{color:var(--green);margin-right:6px;}
@media(max-width:760px){
  .cta-panel{padding:34px 24px;border-radius:22px;}
  .cta-panel h2{font-size:26px;}
}

/* ---------- Footer ---------- */
.site-footer{
  background:#040912;
  border-top:1px solid rgba(160,190,255,.12);
  padding-top:72px;
  color:var(--body);
}
.footer-grid{
  row-gap:34px;
}
.footer-about p{
  margin-top:18px;
  color:#7187a5;
  font-size:14px;
  line-height:1.95;
  max-width:420px;
}
.footer-title{
  color:#e8f3ff;
  font-size:15px;
  font-weight:600;
  margin-bottom:14px;
  letter-spacing:.3px;
}
.footer-links{
  list-style:none;
  margin:0;
}
.footer-links li{margin-bottom:11px;}
.footer-links a{
  display:inline-flex;
  align-items:center;
  gap:7px;
  color:var(--muted);
  font-size:14px;
  transition:color .2s ease,transform .2s ease;
}
.footer-links a:hover{
  color:var(--cyan);
  transform:translateX(2px);
}
.footer-bottom{
  margin-top:48px;
  padding:20px 0;
  border-top:1px solid rgba(160,190,255,.1);
  font-size:13px;
  color:#62788f;
}
.footer-bottom p{line-height:1.6;}
.footer-bottom .container{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:8px;
  padding-top:0;
  padding-bottom:0;
}
@media(max-width:760px){
  .footer-bottom .container{flex-direction:column;align-items:flex-start;gap:6px;}
}

/* ---------- Generic media / mobile ---------- */
.page-category-3 .section{padding:86px 0;}
@media(max-width:980px){
  .section{padding:76px 0;}
  .cat-hero{padding:58px 0 74px;}
  .cat-hero-title{font-size:36px;}
  .main-nav{
    position:absolute;
    top:calc(100% + 10px);
    left:24px;
    right:24px;
    display:flex;
    flex-direction:column;
    align-items:flex-start;
    gap:4px;
    margin:0;
    padding:16px;
    border-radius:18px;
    border:1px solid var(--line);
    background:rgba(5,10,19,.97);
    box-shadow:0 22px 56px rgba(0,5,16,.42);
    visibility:hidden;
    opacity:0;
    transform:translateY(-10px);
    pointer-events:none;
    transition:visibility .25s ease,opacity .25s ease,transform .25s ease;
  }
  .nav-open .main-nav{
    visibility:visible;
    opacity:1;
    transform:translateY(0);
    pointer-events:auto;
  }
  .nav-link{
    width:100%;
    padding:11px 14px;
    border-radius:10px;
    font-size:15px;
    border-left:2px solid transparent;
  }
  .nav-link::after{display:none;}
  .nav-link:hover,.nav-link.active{
    background:rgba(47,216,255,.09);
    color:#fff;
    border-left-color:var(--cyan);
  }
  .nav-toggle{
    display:inline-flex;
    margin-left:auto;
  }
  .header-cta{
    display:none;
  }
  .hero-visual{margin-top:46px;}
  .security-model{margin:0 auto;}
}
@media(max-width:640px){
  .top-status-message{font-size:12px;white-space:normal;}
  .brand-text strong{font-size:18px;}
  .section-title{font-size:28px;}
  .cat-hero-title{font-size:31px;line-height:1.42;}
  .hero-lead{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .btn{height:48px;}
  .overview-block,.audit-wrap{padding:25px 20px;}
  .text-lead{font-size:15px;}
  .container{padding:0 18px;}
  .footer-links li{margin-bottom:9px;}
  .footer-grid .cell.small-6{width:50%;}
  .footer-grid .cell.small-12{width:100%;}
}
@media(max-width:420px){
  .top-status{display:none;}
  .brand-mark{width:38px;height:38px;font-size:17px;border-radius:12px;}
  .brand-text span{display:none;}
  .container{padding:0 14px;}
  .section-title{font-size:26px;}
  .tag-chip{font-size:12px;padding:6px 10px;}
  .nav-link{font-size:16px;}
  .security-model{padding:18px;}
}