/* roulang page: index */
/* ============ 设计变量 ============ */
:root {
  --bg: #050A16;
  --bg-deep: #0B1526;
  --panel-1: rgba(18, 32, 56, 0.62);
  --panel-2: rgba(12, 22, 40, 0.72);
  --panel-solid: #102033;
  --line: rgba(255, 255, 255, 0.10);
  --line-bright: rgba(255, 255, 255, 0.18);
  --text-hi: #E6ECF5;
  --text-mid: #A7B3C4;
  --text-dim: #708097;
  --brand: #2F80FF;
  --brand-cyan: #18B7E8;
  --accent: #00E5A0;
  --warn: #FFB020;
  --danger: #FF5964;
  --info: #2F80FF;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 8px;
  --radius-xs: 4px;
  --shadow-soft: 0 18px 50px rgba(0, 0, 0, 0.36);
  --shadow-btn: 0 0 0 1px rgba(47, 128, 255, .5), 0 6px 26px rgba(47, 128, 255, .38);
  --shadow-btn-hover: 0 0 0 1px rgba(47, 128, 255, .8), 0 10px 36px rgba(47, 128, 255, .5);
  --header-h: 76px;
  --container: 1200px;
  --ease: cubic-bezier(.22, .7, .36, 1);
}
@media (max-width: 768px) {
  :root { --header-h: 68px; }
}
/* ===== reset/base ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
  margin: 0;
  background:
    radial-gradient(1200px 520px at 80% -10%, rgba(20, 64, 120, .26), transparent 62%),
    radial-gradient(800px 400px at 10% 8%, rgba(0, 229, 160, .08), transparent 46%),
    var(--bg);
  background-attachment: fixed;
  color: var(--text-hi);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; border: 0; }
a { color: inherit; text-decoration: none; }
button, input { font-family: inherit; font-size: inherit; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4, p, figure { margin: 0; }
:focus-visible { outline: 2px solid #fff; outline-offset: 3px; box-shadow: 0 0 20px rgba(255,255,255,.25); border-radius: 6px; }
::selection { background: rgba(47, 128, 255, .55); color: #fff; }

.container {
  width: min(var(--container), 100% - 40px);
  margin-inline: auto;
}
@media (max-width: 520px) {
  .container { width: min(var(--container), 100% - 32px); }
}
/* ===== 玻璃面板通用 ===== */
.glass {
  background: linear-gradient(145deg, rgba(255,255,255,.055), rgba(255,255,255,.012)), var(--panel-2);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(14px) saturate(130%);
  -webkit-backdrop-filter: blur(14px) saturate(130%);
  position: relative;
}
.glass::before {
  content: "";
  pointer-events: none;
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.5), transparent);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}
/* 低端降级背景 */
@supports not ((backdrop-filter: blur(14px)) or (-webkit-backdrop-filter: blur(14px))) {
  .glass { background: #0E1A2F; }
}
/* ===== 标题层级 ===== */
.section-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: clamp(24px, 3vw, 31px);
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--text-hi);
}
.section-title::before {
  content: "";
  width: 4px;
  height: 24px;
  flex: 0 0 4px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--brand), var(--brand-cyan));
  box-shadow: 0 0 14px rgba(47,128,255,.9);
}
.section-sub {
  max-width: 680px;
  margin-top: 14px;
  color: var(--text-mid);
  font-size: 15px;
}
.section-head {
  margin-bottom: 40px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: 20px;
}
.section-head .layout-link {
  color: var(--text-mid);
  white-space: nowrap;
  font-size: 14px;
  border-bottom: 1px solid rgba(47,128,255,.6);
  padding-bottom: 4px;
  transition: border .3s ease, color .3s ease;
}
.section-head .layout-link:hover { color: #fff; border-bottom-color: var(--accent); }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 22px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
  white-space: nowrap;
  background: transparent;
  color: inherit;
  transition: transform .28s var(--ease), box-shadow .28s var(--ease), background .28s var(--ease), border-color .28s var(--ease), opacity .28s ease;
}
.btn-primary {
  background: linear-gradient(120deg, #2F80FF 0%, #18B7E8 100%);
  color: #fff;
  border-color: rgba(255,255,255,.12);
  box-shadow: var(--shadow-btn);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-btn-hover); filter: brightness(1.08); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 0 0 1px rgba(47,128,255,.4), 0 3px 18px rgba(47,128,255,.25); }
.btn-ghost {
  background: rgba(255,255,255,.055);
  border: 1px solid rgba(255,255,255,.18);
  color: var(--text-hi);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.btn-ghost:hover { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.35); transform: translateY(-2px); }
.btn-ghost:active { transform: translateY(0); }
.btn-sm { height: 34px; padding: 0 14px; font-size: 14px; }
.btn-lg { height: 52px; padding: 0 30px; font-size: 17px; }
.btn:disabled { opacity: .5; pointer-events: none; }

/* ===== 标签 / chip ===== */
.chip, .badge, .tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  line-height: 1;
  padding: 6px 10px;
  border-radius: var(--radius-xs);
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  color: var(--text-hi);
}
.badge-accent { color: #D8FAEF; background: rgba(0, 229, 160, .13); border-color: rgba(0, 229, 160, .38); box-shadow: 0 0 12px rgba(0, 229, 160, .14); }
.badge-brand { color: #D8E7FF; background: rgba(47, 128, 255, .13); border-color: rgba(47,128,255,.38); box-shadow: 0 0 12px rgba(47,128,255,.13); }

/* ===== 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(5, 10, 22, .82);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border-bottom: 1px solid rgba(255,255,255,.09);
}
.site-header::after {
  content: "";
  position: absolute;
  bottom: -8px;
  left: 0; right: 0;
  height: 8px;
  opacity: .55;
  background: linear-gradient(to bottom, rgba(0,0,0,.18), transparent);
  pointer-events: none;
}
.nav-container {
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 18px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
  margin-right: 8px;
}
.brand-mark {
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 9px;
  background: linear-gradient(135deg, rgba(47,128,255,.7), rgba(24,183,232,.3));
  border: 1px solid rgba(255,255,255,.28);
  position: relative;
  box-shadow: 0 0 20px rgba(47,128,255,.45), inset 0 0 8px rgba(0,229,160,.18);
}
.brand-mark .pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(0,229,160,.6);
  animation: pulseGlow 2.4s infinite;
}
@keyframes pulseGlow {
  0% { box-shadow: 0 0 0 0 rgba(0,229,160,.55); }
  60% { box-shadow: 0 0 0 7px rgba(0,229,160,0); }
  100% { box-shadow: 0 0 0 0 rgba(0,229,160,0); }
}
.brand-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  line-height: 1.1;
}
.brand-name {
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  letter-spacing: .02em;
}
.brand-sub {
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: .14em;
  text-transform: uppercase;
}
.seg-nav {
  flex: 1;
  min-width: 0;
  display: flex;
  justify-content: center;
}
.seg-nav .nav-list {
  display: flex;
  align-items: center;
  padding: 4px;
  gap: 2px;
  background: rgba(255,255,255,.055);
  border: 1px solid rgba(255,255,255,.095);
  border-radius: 42px;
  max-width: 100%;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  scroll-snap-type: x mandatory;
}
.seg-nav .nav-list::-webkit-scrollbar { display: none; }
.nav-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 34px;
  padding: 0 15px;
  border-radius: 40px;
  scroll-snap-align: center;
  color: var(--text-mid);
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  transition: background .3s ease, color .3s ease, box-shadow .3s ease;
}
.nav-item:hover { color: #fff; background: rgba(255,255,255,.08); }
.nav-item.current {
  background: linear-gradient(90deg, rgba(47,128,255,.28), rgba(47,128,255,.08));
  color: #fff;
  box-shadow: inset 0 0 0 1px rgba(47,128,255,.5), 0 0 14px rgba(47,128,255,.28);
}
.header-actions {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
}
.mobile-toggle {
  display: none;
  width: 44px;
  height: 40px;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.12);
  color: var(--text-hi);
  border-radius: 8px;
  cursor: pointer;
}
.mobile-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  margin: 3px auto;
  transition: transform .3s var(--ease), opacity .3s ease;
}
.mobile-toggle.open span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.mobile-toggle.open span:nth-child(2) { opacity: 0; }
.mobile-toggle.open span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* 移动端导航面板 */
.mobile-nav {
  display: none;
  position: absolute;
  top: var(--header-h);
  right: 0; left: 0;
  z-index: 90;
  max-height: 0;
  overflow: hidden;
  transition: max-height .38s var(--ease), opacity .3s ease;
  opacity: 0;
  background: rgba(5, 10, 22, .96);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}
.mobile-nav.open {
  max-height: 360px;
  opacity: 1;
  padding-bottom: 18px;
}
.mobile-nav ul { display: grid; gap: 4px; padding: 14px 18px 8px; }
.mobile-nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 10px;
  border-radius: 10px;
  color: var(--text-mid);
  font-weight: 500;
}
.mobile-nav a.current { color: #fff; background: rgba(47,128,255,.18); }
.mobile-nav a:hover { color: #fff; background: rgba(255,255,255,.05); }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 680px;
  display: flex;
  align-items: center;
  padding: 90px 0 60px;
  overflow: hidden;
  background:
    radial-gradient(900px 440px at 74% 24%, rgba(34,100,185,.22), transparent 68%),
    linear-gradient(180deg, rgba(5,10,22,.70) 0%, rgba(5,10,22,.94) 100%),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(255,255,255,.05) 1px, transparent 1.5px);
  background-size: 26px 26px;
  mask-image: linear-gradient(to bottom, transparent, #000 15%, #000 75%, transparent);
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 15%, #000 75%, transparent);
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.06fr .94fr;
  gap: 48px;
  align-items: center;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-mid);
  font-size: 13px;
  letter-spacing: .08em;
  padding: 6px 10px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,.08);
  background: rgba(255,255,255,.05);
  margin-bottom: 20px;
}
.hero-eyebrow .live-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(0,229,160,.9);
}
.hero h1 {
  font-size: clamp(30px, 4.4vw, 48px);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -.01em;
  color: #fff;
  max-width: 620px;
  margin-bottom: 22px;
}
.hero h1 .gradient-text {
  background: linear-gradient(115deg, #fff 10%, #8FC0FF 80%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  color: var(--text-mid);
  font-size: 16px;
  line-height: 1.85;
  max-width: 520px;
  margin-bottom: 28px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 28px; }
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
}
.hero-stats span {
  font-size: 13px;
  color: var(--text-dim);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.hero-stats span i {
  display: inline-block;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--brand);
  opacity: .7;
}
/* hero panel */
.hero-panel {
  padding: 26px;
  border-radius: var(--radius-lg);
  max-width: 480px;
  margin-left: auto;
  color: var(--text-hi);
}
.hero-panel .status-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #D8FAEF;
  background: rgba(0,229,160,.15);
  border: 1px solid rgba(0,229,160,.36);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 12px;
  letter-spacing: .05em;
  margin-bottom: 20px;
}
.hero-panel .status-tag i {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(0,229,160,.5);
  animation: pulseGlow 2s infinite;
}
.hero-panel h2 {
  font-size: clamp(20px, 2.1vw, 25px);
  font-weight: 700;
  color: #fff;
  line-height: 1.45;
  margin-bottom: 10px;
}
.hero-panel .session-meta { color: var(--text-dim); font-size: 14px; margin-bottom: 24px; }
.session-info { display: grid; gap: 0; border-top: 1px solid rgba(255,255,255,.09); }
.session-info > div {
  display: flex;
  justify-content: space-between;
  padding: 13px 0;
  border-bottom: 1px solid rgba(255,255,255,.07);
  font-size: 14px;
}
.session-info span { color: var(--text-dim); }
.session-info strong { color: var(--text-hi); font-weight: 600; }
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  color: var(--brand-cyan);
  font-weight: 600;
  border-bottom: 2px solid rgba(24,183,232,.32);
  padding-bottom: 2px;
  transition: color .25s ease, border .25s ease;
}
.text-link:hover { color: var(--accent); border-color: var(--accent); }

/* ===== Countdown ===== */
.countdown-wrap {
  position: relative;
  z-index: 2;
  margin-top: -54px;
  padding: 0 20px;
}
.countdown-panel {
  max-width: 1040px;
  margin: 0 auto;
  padding: 22px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  border-radius: var(--radius-lg);
  flex-wrap: wrap;
}
.countdown-label { font-size: 16px; font-weight: 700; color: var(--text-hi); display: flex; align-items: center; gap: 10px; }
.countdown-label::before {
  content: "";
  width: 10px; height: 10px;
  background: var(--warn);
  border-radius: 50%;
  box-shadow: 0 0 16px rgba(255,176,32,.8);
}
.countdown-boxes {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.countdown-item {
  background: rgba(5,10,22,.55);
  border-radius: 12px;
  padding: 14px 20px 10px;
  text-align: center;
  min-width: 75px;
  border: 1px solid rgba(255,255,255,.08);
}
.countdown-item .num {
  display: block;
  font-size: clamp(28px, 4.4vw, 42px);
  line-height: 1;
  font-weight: 800;
  color: #fff;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
  letter-spacing: .02em;
  text-shadow: 0 0 22px rgba(47,128,255,.4);
}
.countdown-item .unit {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 8px;
  display: block;
}
@media (max-width: 640px) {
  .countdown-panel { align-items: flex-start; padding: 20px; gap: 16px; }
  .countdown-item { min-width: 62px; padding: 10px 8px 8px; }
  .countdown-item .num { font-size: 24px; }
}

/* ===== Highlights ===== */
.highlights {
  padding: 104px 0 60px;
}
.timeline-list {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px 34px;
  margin-top: 10px;
}
.timeline-list::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, rgba(47,128,255,0), rgba(47,128,255,.35), rgba(0,229,160,0));
}
.highlight-card {
  display: flex;
  gap: 16px;
  padding: 22px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,.035);
  border: 1px solid rgba(255,255,255,.07);
  transition: transform .35s var(--ease), border-color .35s ease, background .35s ease;
  position: relative;
}
.highlight-card::after {
  content: "";
  position: absolute;
  inset-inline-start: -2px;
  top: 16px;
  bottom: 16px;
  width: 2px;
  background: var(--brand-cyan);
  opacity: 0;
  border-radius: 2px;
  box-shadow: 0 0 10px rgba(24,183,232,.8);
  transition: opacity .3s ease;
}
.highlight-card:nth-child(even) { margin-top: 42px; }
.highlight-card:hover { border-color: rgba(255,255,255,.16); transform: translateY(-5px); background: rgba(255,255,255,.06); }
.highlight-card:hover::after { opacity: 1; }
.hc-index {
  flex: 0 0 34px;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-cyan);
  font-weight: 700;
  font-size: 14px;
  border-radius: 10px;
  background: rgba(24,183,232,.09);
  border: 1px solid rgba(24,183,232,.3);
  letter-spacing: .1em;
}
.hc-body h3 { color: #fff; font-size: 17px; font-weight: 650; margin-bottom: 6px; }
.hc-body p { color: var(--text-dim); font-size: 14px; line-height: 1.7; }
@media (max-width: 900px) {
  .timeline-list { grid-template-columns: 1fr; }
  .timeline-list::before { display: none; }
  .highlight-card:nth-child(even) { margin-top: 0; }
  .highlight-card::after { display: none; }
}

/* ===== subscribe ===== */
.subscribe-wrap {
  padding: 60px 0;
}
.subscribe-panel {
  position: relative;
  border-radius: var(--radius-lg);
  padding: 40px;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 28px;
  border: 1px solid rgba(255,255,255,.1);
  background:
    linear-gradient(135deg, rgba(255,255,255,.05), transparent 55%),
    linear-gradient(120deg, rgba(16,32,51,.88), rgba(5,10,22,.96));
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}
.subscribe-panel::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--brand), var(--accent), var(--warn));
}
.subscribe-copy h2 { color: #fff; font-size: 26px; font-weight: 700; margin-bottom: 16px; }
.subscribe-copy p { color: var(--text-mid); line-height: 1.8; font-size: 15px; max-width: 480px; }
.subscribe-form-wrap form {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-md);
  padding: 22px;
  display: grid;
  gap: 16px;
}
.field { display: grid; gap: 6px; }
.field label { font-size: 13px; color: var(--text-mid); }
.field input {
  height: 46px;
  background: rgba(5,10,22,.45);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 8px;
  padding: 0 14px;
  color: var(--text-hi);
  transition: border .3s ease, box-shadow .3s ease;
}
.field input:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(47,128,255,.22);
}
.field input::placeholder { color: var(--text-dim); opacity: .9; }
.form-meta { font-size: 13px; color: var(--text-dim); }
.form-meta a { color: var(--brand-cyan); border-bottom: 1px dashed rgba(24,183,232,.4); }
.form-note { font-size: 13px; color: var(--text-dim); text-align: center; min-height: 20px; transition: color .3s ease; }
.form-note.success { color: var(--accent); }
.form-note.error { color: var(--danger); }
@media (max-width: 860px) {
  .subscribe-panel { grid-template-columns: 1fr; padding: 26px; }
}

/* ===== Library ===== */
.library-wrap { padding: 70px 0 40px; }
.library-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 20px;
}
.library-main {
  grid-column: span 7;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  background: #0A1725;
  border: 1px solid rgba(255,255,255,.09);
  transition: transform .35s var(--ease), box-shadow .35s ease;
}
.library-main:hover { transform: translateY(-4px); box-shadow: 0 18px 44px rgba(0,0,0,.3); }
.library-main .media {
  position: relative;
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, #08101F, #12243B);
}
.library-main .media img { width: 100%; height: 100%; object-fit: cover; }
.library-main .gradient {
  position: absolute; left: 0; right: 0; bottom: 0; height: 68%;
  background: linear-gradient(to top, rgba(5,10,22,.95), rgba(5,10,22,.25) 75%, transparent);
}
.library-main .content {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 24px;
  z-index: 2;
}
.library-main .tags { margin-bottom: 12px; }
.library-main h3 { color: #fff; font-size: 22px; font-weight: 700; line-height: 1.4; max-width: 600px; }
.library-main p { color: rgba(230,236,245,.76); font-size: 14px; margin-top: 8px; max-width: 620px; }
.library-main .btn { margin-top: 18px; }
.library-side {
  grid-column: span 5;
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
.side-card {
  display: flex;
  border-radius: var(--radius-md);
  padding: 16px;
  gap: 16px;
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.08);
  align-items: center;
  transition: background .3s ease, transform .3s var(--ease), border .3s ease;
}
.side-card:hover { background: rgba(255,255,255,.065); transform: translateX(5px); border-color: rgba(255,255,255,.16); }
.side-thumb {
  flex: 0 0 116px;
  aspect-ratio: 16/10;
  border-radius: 10px;
  overflow: hidden;
  background: #08101F;
}
.side-thumb img { width: 100%; height: 100%; object-fit: cover; cursor: pointer; }
.side-content { min-width: 0; }
.side-content h4 { color: var(--text-hi); font-size: 15px; line-height: 1.5; font-weight: 600; margin-bottom: 5px; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.side-content span { display: block; color: var(--text-dim); font-size: 12px; margin-bottom: 8px; }
.side-content .chip { font-size: 11px; padding: 4px 8px; }
@media (max-width: 1024px) {
  .library-main { grid-column: span 12; }
  .library-side { grid-column: span 12; grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .library-side { grid-template-columns: 1fr; }
  .side-thumb { flex-basis: 90px; }
  .library-main .content { padding: 16px; }
  .library-main h3 { font-size: 18px; }
}

/* ===== News / CMS ===== */
.news-wrap { padding: 70px 0 30px; }
.news-dark-panel {
  background: linear-gradient(180deg, rgba(8,14,27,.65), rgba(5,10,22,.88));
  border-top: 1px solid rgba(255,255,255,.07);
  border-bottom: 1px solid rgba(255,255,255,.07);
  padding: 90px 0;
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 20px;
}
.news-card {
  grid-column: span 4;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  transition: transform .32s var(--ease), border-color .32s ease, box-shadow .32s ease, background .32s ease;
  height: 100%;
}
.news-card:hover { transform: translateY(-5px); border-color: rgba(255,255,255,.17); background: rgba(255,255,255,.075); box-shadow: 0 18px 38px rgba(0,0,0,.35); }
.news-card .news-thumb {
  margin: 10px;
  border-radius: 12px;
  aspect-ratio: 16 / 8;
  overflow: hidden;
  background: #081527;
}
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .45s var(--ease);
}
.news-card:hover .news-thumb img { transform: scale(1.04); }
.news-body { padding: 4px 18px 20px; }
.news-meta { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.news-meta time { font-size: 12px; color: var(--text-dim); flex: 0 0 auto; }
.news-body h3 { color: var(--text-hi); font-size: 17px; line-height: 1.5; font-weight: 650; margin-bottom: 8px; }
.news-body p { color: var(--text-dim); font-size: 14px; display: -webkit-box; -webkit-line-clamp: 2; overflow: hidden; -webkit-box-orient: vertical; }
.news-card .more-link { display: inline-flex; align-items: center; color: var(--brand-cyan); font-size: 13px; margin-top: 12px; gap: 5px; border-bottom: 1px solid transparent; transition: border .3s; }
.news-card .more-link:hover { border-color: var(--accent); color: var(--accent); }
.news-empty {
  grid-column: 1 / -1;
  border: 1px dashed rgba(255,255,255,.22);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 220px;
  background: rgba(15,28,50,.4);
  color: var(--text-dim);
  gap: 12px;
}
@media (max-width: 920px) {
  .news-card { grid-column: span 6; }
}
@media (max-width: 640px) {
  .news-card { grid-column: 1 / -1; }
}

/* ===== FAQ ===== */
.faq-wrap { padding: 80px 0 50px; }
.faq-list { max-width: 800px; margin: 28px auto 0; }
.faq-item {
  border-radius: var(--radius-md);
  background: rgba(255,255,255,.025);
  border: 1px solid rgba(255,255,255,.045);
  border-bottom: 1px solid rgba(255,255,255,.095);
  margin-bottom: 10px;
  transition: border-color .35s ease, background .35s ease;
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 22px 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item[open] { background: rgba(47,128,255,.05); border-color: rgba(47,128,255,.2); }
.faq-item[open] summary { background: transparent; }
.faq-item .q-title { color: var(--text-hi); font-weight: 600; font-size: 16px; display: flex; align-items: center; gap: 12px; }
.faq-item .q-title::before { content: "Q"; display: inline-flex; align-items: center; justify-content: center; width: 22px; height: 24px; flex: 0 0 auto; font-size: 12px; color: var(--brand-cyan); background: rgba(47,128,255,.13); border-radius: 6px; font-weight: 800; }
.faq-item .icon { flex: 0 0 auto; width: 26px; height: 26px; display: grid; place-items: center; border-radius: 50%; color: var(--text-dim); transition: transform .4s var(--ease), background .3s; }
.faq-item .icon svg { width: 15px; height: 15px; }
.faq-item[open] .icon { transform: rotate(45deg); background: rgba(255,255,255,.08); color: var(--brand-cyan); }
.faq-answer {
  padding: 0 42px 20px 58px;
  color: var(--text-mid);
  font-size: 15px;
  line-height: 1.85;
}
.faq-answer a { color: var(--brand-cyan); border-bottom: 1px dashed rgba(24,183,232,.45); }
.faq-answer.include-spacing { margin-top: 8px; }

/* ===== Final CTA ===== */
.cta-banner {
  margin: 20px 0 0;
  padding: 48px 0 60px;
}
.cta-strip {
  max-width: 1040px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  background: linear-gradient(90deg, rgba(47,128,255,.10), rgba(47,128,255,.05)), rgba(10,18,32,.8);
  border: 1px solid rgba(47,128,255,.3);
  border-radius: var(--radius-lg);
  padding: 30px 34px;
  box-shadow: 0 0 32px rgba(47,128,255,.12);
}
.cta-strip h2 { color: #fff; font-size: 24px; font-weight: 700; }
.cta-strip p { color: var(--text-mid); margin-top: 6px; font-size: 14px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* ===== Footer ===== */
.site-footer {
  background: #04060D;
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 64px 0 26px;
  color: var(--text-dim);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1.2fr 1.3fr 1.65fr;
  gap: 32px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.footer-brand .brand-name-footer {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 22px;
  color: #fff;
  font-weight: 700;
}
.brand-name-footer .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px rgba(0,229,160,.9); }
.footer-about { margin-top: 14px; font-size: 14px; line-height: 1.85; max-width: 300px; }
.footer-title { color: #fff; font-size: 15px; margin-bottom: 16px; font-weight: 650; }
.footer-links { display: grid; gap: 9px; }
.footer-links a { font-size: 14px; color: var(--text-dim); transition: color .25s; }
.footer-links a:hover { color: var(--brand-cyan); }
.footer-contact p { font-size: 14px; display: flex; align-items: center; gap: 8px; color: var(--text-dim); padding: 3px 0;}
.footer-contact p i { color: var(--brand); font-style: normal; }
.site-footer .copyright {
  text-align: center;
  font-size: 13px;
  padding-top: 20px;
  color: var(--text-dim);
  letter-spacing: .01em;
}
@media (max-width: 980px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
}

/* ===== motion reduce ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}

/* ===== responsive base ===== */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr 1fr; }
  .seg-nav .nav-list { max-width: calc(100vw - 240px); }
}
@media (max-width: 768px) {
  .seg-nav, .header-actions .btn-sm { display: none; }
  .mobile-toggle { display: flex; }
  .mobile-nav { display: block; }
  .hero { min-height: auto; padding: 70px 0 90px; }
  .hero-grid { grid-template-columns: 1fr; gap: 28px; }
  .hero-panel { margin-left: initial; }
  .section-head { margin-bottom: 28px; }
  .countdown-wrap { margin-top: -30px; }
  .highlights { padding-top: 74px; }
}
@media (max-width: 640px) {
  .subscribe-panel { padding: 18px; border-radius: var(--radius-md); }
  .field input { height: 44px; }
  .cta-strip { padding: 24px 20px; }
  .faq-item summary { padding: 16px 16px; }
  .faq-answer { padding: 2px 18px 18px 30px; font-size: 14px; }
  .hero h1 { font-size: clamp(26px, 8.4vw, 36px); }
}

/* roulang page: category1 */
:root {
            --bg-deep: #050A16;
            --bg-panel: #102033;
            --bg-elev: rgba(255, 255, 255, 0.04);
            --blue-main: #2F80FF;
            --blue-lite: #18B7E8;
            --cyan: #00E5A0;
            --amber: #FFB020;
            --red: #FF5964;
            --text-hi: #E6ECF5;
            --text-mid: #A7B3C4;
            --text-low: #708097;
            --border-glow: rgba(47, 128, 255, 0.35);
            --stroke: rgba(255, 255, 255, 0.1);
            --radius-card: 16px;
            --radius-chip: 8px;
            --radius-btn: 8px;
            --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.25);
            --max-w: 1200px;
            --ease: cubic-bezier(0.22, 1, 0.36, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--bg-deep);
            background-image: radial-gradient(circle at 20% 0%, rgba(30, 66, 110, 0.26), transparent 34%),
            radial-gradient(circle at 90% 18%, rgba(24, 183, 232, 0.06), transparent 28%);
            color: var(--text-hi);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            background-image: linear-gradient(rgba(25, 58, 90, 0.08) 1px, transparent 1px),
            linear-gradient(90deg, rgba(25, 58, 90, 0.06) 1px, transparent 1px);
            background-size: 44px 44px;
            pointer-events: none;
            z-index: 0;
        }

        img {
            max-width: 100%;
            display: block;
            border: none;
        }

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

        button,
        input {
            font-family: inherit;
            border: none;
            outline: none;
            background: none;
        }

        .container {
            max-width: var(--max-w);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            position: relative;
            z-index: 2;
        }

        .dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--cyan);
            box-shadow: 0 0 0 4px rgba(0, 229, 160, .2), 0 0 14px rgba(0, 229, 160, .8);
            margin-right: 6px;
            vertical-align: middle;
        }

        .brand-name,
        .brand-name-footer {
            font-weight: 700;
            letter-spacing: .04em;
            white-space: nowrap;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 999;
            background: rgba(5, 10, 22, 0.72);
            -webkit-backdrop-filter: blur(18px) saturate(150%);
            backdrop-filter: blur(18px) saturate(150%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .header-inner {
            max-width: var(--max-w);
            margin: 0 auto;
            height: 76px;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .header-logo {
            display: flex;
            align-items: center;
            font-size: 20px;
            padding: 6px 0;
            color: var(--text-hi);
            gap: 8px;
        }

        .brand-mark {
            font-style: normal;
        }

        .seg-nav-wrap {
            flex: 1;
            display: flex;
            justify-content: center;
        }

        .seg-nav {
            display: flex;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 4px;
            border-radius: 48px;
            gap: 2px;
            overflow-x: auto;
            scrollbar-width: none;
            position: relative;
        }

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

        .nav-list {
            display: flex;
            list-style: none;
            align-items: center;
            gap: 2px;
            margin: 0;
            padding: 0;
        }

        .nav-item {
            display: inline-block;
            padding: 8px 18px;
            font-size: 15px;
            color: var(--text-mid);
            border-radius: 999px;
            transition: color .25s var(--ease), background .25s var(--ease), box-shadow .25s var(--ease);
            white-space: nowrap;
        }

        .nav-item:hover {
            color: #fff;
            background: rgba(255, 255, 255, .06);
        }

        .nav-item.current {
            background: rgba(47, 128, 255, 0.16);
            color: #fff;
            box-shadow: 0 0 0 1px rgba(47, 128, 255, .4), 0 2px 12px rgba(47, 128, 255, .25);
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            line-height: 1.2;
            height: 44px;
            padding: 0 22px;
            border-radius: var(--radius-btn);
            cursor: pointer;
            transition: all .25s var(--ease);
            background: rgba(255, 255, 255, .05);
            border: 1px solid var(--stroke);
            color: var(--text-hi);
            text-decoration: none;
            user-select: none;
        }

        .btn-primary {
            background: var(--blue-main);
            border: none;
            color: #fff;
            box-shadow: 0 0 20px rgba(47, 128, 255, .25);
        }

        .btn-primary:hover {
            background: #5296ff;
            box-shadow: 0 0 30px rgba(47, 128, 255, .38);
            transform: translateY(-1px);
        }

        .btn-secondary:hover {
            border-color: rgba(255, 255, 255, .2);
            background: rgba(255, 255, 255, .09);
        }

        .btn-big {
            height: 52px;
            min-width: 160px;
            padding: 0 32px;
            font-size: 16px;
        }

        .hero-category {
            padding: 96px 0 56px;
            position: relative;
        }

        .hero-category-inner {
            display: flex;
            gap: 36px;
            align-items: center;
            justify-content: space-between;
        }

        .hero-copy {
            flex: 1.1;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 229, 160, 0.08);
            color: var(--cyan);
            border: 1px solid rgba(0, 229, 160, .18);
            padding: 6px 14px;
            border-radius: 40px;
            font-size: 13px;
            margin-bottom: 20px;
            letter-spacing: .02em;
        }

        .hero-category h1 {
            font-size: 44px;
            line-height: 1.22;
            font-weight: 800;
            letter-spacing: -.02em;
            max-width: 680px;
        }

        .hero-category h1 .accent {
            color: transparent;
            background: linear-gradient(90deg, #ffffff, var(--blue-lite));
            -webkit-background-clip: text;
            background-clip: text;
        }

        .lead-text {
            max-width: 620px;
            color: var(--text-mid);
            font-size: 17px;
            margin-top: 22px;
            line-height: 1.8;
        }

        .hero-notes {
            display: flex;
            flex-wrap: wrap;
            gap: 20px 24px;
            margin-top: 32px;
            color: var(--text-mid);
            font-size: 14px;
        }

        .hero-notes span i {
            color: var(--cyan);
            font-style: normal;
            margin-right: 8px;
        }

        .hero-figure {
            flex: 1;
            border-radius: 24px;
            overflow: hidden;
            position: relative;
            border: 1px solid rgba(255, 255, 255, .12);
            background: rgba(255, 255, 255, .03);
            min-height: 300px;
        }

        .hero-figure img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(5, 10, 22, .88), rgba(5, 10, 22, .18) 72%);
        }

        .hero-content-bottom {
            position: absolute;
            left: 24px;
            bottom: 22px;
            right: 20px;
        }

        .live-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            border-radius: 14px;
            background: rgba(10, 20, 36, .7);
            -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, .1);
            padding: 16px 20px;
            position: absolute;
            bottom: 22px;
            left: calc(50% + 12px);
            min-width: 220px;
            z-index: 3;
        }

        .live-ico {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: rgba(47, 128, 255, .15);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--blue-lite);
            font-size: 18px;
        }

        .live-title {
            font-weight: 600;
            font-size: 15px;
        }

        .live-sub {
            color: var(--text-mid);
            font-size: 13px;
            margin-top: 2px;
        }

        .live-badge {
            background: var(--red);
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 12px;
            color: #fff;
            margin-left: auto;
        }

        .ticker-line {
            display: flex;
            gap: 32px;
            border-top: 1px solid rgba(255, 255, 255, .08);
            border-bottom: 1px solid rgba(255, 255, 255, .08);
            padding: 18px 0;
            margin-top: 64px;
            color: var(--text-mid);
            font-size: 14px;
            flex-wrap: wrap;
        }

        .ticker-item {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .ticker-item strong {
            color: #fff;
            font-weight: 600;
        }

        .section-block {
            padding: 72px 0;
            position: relative;
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 44px;
        }

        .section-tag {
            display: block;
            font-size: 13px;
            letter-spacing: .18em;
            color: var(--blue-lite);
            text-transform: uppercase;
            margin-bottom: 12px;
            font-weight: 600;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: -0.01em;
        }

        .section-desc {
            color: var(--text-mid);
            max-width: 580px;
        }

        .link-ghost {
            color: var(--blue-lite);
            font-size: 14px;
            border-bottom: 1px solid rgba(24, 183, 232, .35);
            padding-bottom: 2px;
            transition: border .2s var(--ease);
            white-space: nowrap;
        }

        .link-ghost:hover {
            border-bottom-color: var(--blue-lite);
        }

        .card-grid {
            display: grid;
            gap: 24px;
        }

        .product-grid {
            grid-template-columns: repeat(3, 1fr);
        }

        .pub-grid {
            grid-template-columns: repeat(3, 1fr);
        }

        .panel-card {
            background: rgba(16, 32, 51, .65);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: var(--radius-card);
            -webkit-backdrop-filter: blur(8px);
            backdrop-filter: blur(8px);
            transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
            position: relative;
            overflow: hidden;
        }

        .panel-card:hover {
            border-color: rgba(47, 128, 255, .22);
            box-shadow: 0 16px 36px rgba(0, 0, 0, .3);
            transform: translateY(-5px);
        }

        .card-cat {
            padding: 0 24px;
        }

        .prod-pic {
            position: relative;
            margin-bottom: 0;
        }

        .prod-pic img {
            width: 100%;
            height: 210px;
            object-fit: cover;
            border-bottom: 1px solid rgba(255, 255, 255, .06);
        }

        .badge-soft {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(8, 14, 26, .72);
            border: 1px solid rgba(255, 255, 255, .14);
            -webkit-backdrop-filter: blur(8px);
            backdrop-filter: blur(8px);
            color: #fff;
            border-radius: 40px;
            padding: 5px 12px;
            font-size: 12px;
            font-weight: 600;
        }

        .card-body {
            padding: 20px 24px 24px;
        }

        .card-body .cat-tag {
            display: inline-block;
            background: rgba(47, 128, 255, .12);
            color: var(--blue-lite);
            font-size: 12px;
            padding: 3px 12px;
            border-radius: 38px;
            margin-bottom: 10px;
            font-weight: 600;
        }

        .card-body h3 {
            font-size: 19px;
            margin-bottom: 8px;
            font-weight: 700;
            line-height: 1.4;
        }

        .card-body p {
            color: var(--text-mid);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .card-footer-extra {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: auto;
            border-top: 1px solid rgba(255, 255, 255, .06);
            padding-top: 16px;
        }

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

        .text-link {
            color: var(--blue-lite);
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .text-link i {
            transition: transform .2s var(--ease);
            font-size: 12px;
        }

        .text-link:hover i {
            transform: translateX(3px);
        }

        .split-section {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 50px;
            align-items: center;
        }

        .split-media {
            border-radius: 24px;
            overflow: hidden;
            position: relative;
            aspect-ratio: 16 / 10;
            background: #0b1725;
        }

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

        .play-btn {
            position: absolute;
            top: 50%;
            left: 50%;
            width: 72px;
            height: 72px;
            transform: translate(-50%, -50%);
            border-radius: 50%;
            background: rgba(10, 18, 30, .55);
            border: 1px solid rgba(255, 255, 255, .3);
            -webkit-backdrop-filter: blur(18px);
            backdrop-filter: blur(18px);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 19px;
            transition: all .3s var(--ease);
        }

        .split-media:hover .play-btn {
            background: rgba(47, 128, 255, .82);
            box-shadow: 0 0 38px rgba(47, 128, 255, .4);
            transform: translate(-50%, -50%) scale(1.05);
        }

        .feature-list {
            list-style: none;
            margin-top: 28px;
            display: grid;
            gap: 18px;
        }

        .feature-list li {
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }

        .feature-icon {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            margin-top: 3px;
            border-radius: 8px;
            background: rgba(47, 128, 255, .12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--blue-lite);
        }

        .feature-list strong {
            font-size: 16px;
            font-weight: 600;
            display: block;
            color: #fff;
        }

        .feature-list p {
            font-size: 14px;
            color: var(--text-mid);
        }

        .stat-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1px;
            background: rgba(255, 255, 255, .07);
            border-radius: 18px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, .06);
            margin: 64px 0;
        }

        .stat-item {
            background: rgba(11, 22, 36, .92);
            padding: 32px 24px;
            text-align: center;
        }

        .stat-item .num {
            font-size: 36px;
            font-weight: 800;
            letter-spacing: -.02em;
            font-variant-numeric: tabular-nums;
            color: #fff;
        }

        .stat-item .num em {
            font-style: normal;
            color: var(--cyan);
        }

        .stat-item p {
            color: var(--text-mid);
            font-size: 14px;
            margin-top: 6px;
        }

        .timeline-cat {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            margin: 16px 0 48px;
            position: relative;
        }

        .cat-point {
            border-left: 1px solid rgba(255, 255, 255, .08);
            padding-left: 24px;
            position: relative;
            padding-bottom: 20px;
        }

        .cat-point:before {
            content: "";
            width: 9px;
            height: 9px;
            background: var(--bg-panel);
            border: 2px solid var(--blue-main);
            border-radius: 50%;
            position: absolute;
            left: -5px;
            top: 6px;
            box-shadow: 0 0 12px rgba(47, 128, 255, .4);
        }

        .cat-point .date {
            color: var(--cyan);
            font-size: 13px;
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
            letter-spacing: .02em;
        }

        .cat-point h4 {
            margin: 8px 0 4px;
            font-size: 17px;
            font-weight: 700;
        }

        .cat-point p {
            color: var(--text-mid);
            font-size: 13px;
            line-height: 1.65;
        }

        .subscribe-panel {
            background: linear-gradient(145deg, rgba(16, 32, 51, .9), rgba(7, 14, 26, .95));
            border: 1px solid rgba(47, 128, 255, .2);
            border-radius: 22px;
            padding: 40px 40px 36px;
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: 40px;
            position: relative;
            overflow: hidden;
            -webkit-backdrop-filter: blur(16px);
            backdrop-filter: blur(16px);
        }

        .subscribe-panel:before {
            content: "";
            position: absolute;
            top: 0;
            left: 60px;
            right: 60px;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(47, 128, 255, .5), rgba(0, 229, 160, .4), transparent);
        }

        .subscribe-panel h2 {
            font-size: 30px;
            line-height: 1.3;
            margin-bottom: 14px;
            font-weight: 800;
            letter-spacing: -.01em;
        }

        .subscribe-panel .info-dl {
            color: var(--text-mid);
            font-size: 15px;
        }

        .subscribe-form {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .input-wrap {
            position: relative;
        }

        .input-wrap input {
            width: 100%;
            height: 46px;
            background: rgba(0, 0, 0, .32);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: 8px;
            padding: 0 14px 0 38px;
            color: #fff;
            font-size: 14px;
            transition: border .2s var(--ease), box-shadow .2s var(--ease);
        }

        .input-wrap input::placeholder {
            color: var(--text-low);
        }

        .input-wrap i {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 14px;
            color: var(--text-low);
        }

        .input-wrap input:focus {
            border-color: var(--blue-main);
            box-shadow: 0 0 0 3px rgba(47, 128, 255, .14);
        }

        .subscribe-form .btn-primary {
            grid-column: span 2;
            height: 48px;
            font-size: 16px;
        }

        .sub-note {
            grid-column: span 2;
            color: var(--text-low);
            font-size: 12px;
            text-align: center;
        }

        .block-faq {
            display: grid;
            grid-template-columns: .9fr 1.1fr;
            gap: 48px;
            margin-top: 20px;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
        }

        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, .08);
            padding: 0;
            transition: background .2s var(--ease);
            position: relative;
        }

        .faq-item:has(.faq-question[aria-expanded="true"]) {
            background: rgba(47, 128, 255, .04);
        }

        .faq-item:has(.faq-question[aria-expanded="true"])::before {
            opacity: 1;
        }

        .faq-item::before {
            content: "";
            position: absolute;
            left: -1px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--blue-main);
            opacity: 0;
            transition: opacity .2s var(--ease);
            box-shadow: 0 0 16px rgba(47, 128, 255, .3);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 16px;
            color: var(--text-hi);
            cursor: pointer;
            font-weight: 600;
        }

        .faq-icon {
            font-size: 20px;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, .04);
            transition: all .25s var(--ease);
            flex-shrink: 0;
            margin-left: 16px;
            color: var(--blue-lite);
        }

        .faq-question[aria-expanded="true"] .faq-icon {
            transform: rotate(45deg);
            background: rgba(47, 128, 255, .1);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s var(--ease);
        }

        .faq-answer-inner {
            padding: 0 52px 20px 0;
            color: var(--text-mid);
            font-size: 15px;
            line-height: 1.8;
        }

        .cta-strip {
            border-top: 1px solid rgba(255, 255, 255, .06);
            border-bottom: 1px solid rgba(255, 255, 255, .06);
            padding: 52px 0;
            margin-top: 30px;
        }

        .cta-strip .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }

        .cta-strip h2 {
            font-size: 24px;
            font-weight: 700;
        }

        .cta-strip p {
            color: var(--text-mid);
            margin-top: 6px;
        }

        .cta-btns {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .site-footer {
            background: rgba(4, 8, 16, .92);
            border-top: 1px solid rgba(255, 255, 255, .06);
            padding: 64px 0 32px;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 56px;
            margin-bottom: 52px;
        }

        .footer-brand .brand-name-footer {
            font-size: 22px;
            margin-bottom: 16px;
            color: #fff;
        }

        .footer-about {
            color: var(--text-mid);
            font-size: 14px;
            line-height: 1.8;
            margin-top: 12px;
        }

        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: .02em;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            color: var(--text-mid);
            font-size: 14px;
            transition: color .2s var(--ease), padding-left .2s var(--ease);
        }

        .footer-links a:hover {
            color: var(--blue-lite);
            padding-left: 4px;
        }

        .footer-contact p {
            color: var(--text-mid);
            font-size: 14px;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-contact i {
            font-style: normal;
            color: var(--blue-main);
            font-size: 11px;
        }

        .copyright {
            color: var(--text-low);
            font-size: 13px;
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, .05);
            padding-top: 28px;
        }

        @media (max-width: 1024px) {
            .header-inner {
                gap: 12px;
                padding: 0 16px;
            }

            .nav-item {
                padding: 8px 12px;
                font-size: 14px;
            }

            .hero-category h1 {
                font-size: 36px;
            }

            .product-grid,
            .pub-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .timeline-cat {
                grid-template-columns: repeat(2, 1fr);
                row-gap: 28px;
            }

            .split-section,
            .block-faq {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .subscribe-panel {
                grid-template-columns: 1fr;
            }

            .hero-figure {
                min-height: 260px;
            }

            .live-meta {
                left: 20px;
                right: 20px;
                min-width: auto;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 42px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: auto;
                flex-wrap: wrap;
                padding-top: 13px;
                padding-bottom: 12px;
            }

            .seg-nav-wrap {
                order: 3;
                width: 100%;
                justify-content: center;
                overflow-x: auto;
            }

            .seg-nav {
                border-radius: 22px;
            }

            .brand-mark {
                font-size: 20px;
            }

            .header-cta {
                margin-left: auto;
            }

            .btn-cta-sm {
                height: 38px;
                padding: 0 16px;
                font-size: 14px;
            }

            .hero-category {
                padding: 60px 0 40px;
            }

            .hero-category-inner {
                flex-direction: column;
            }

            .hero-copy,
            .hero-figure {
                width: 100%;
            }

            .hero-figure {
                height: 260px;
            }

            .hero-category h1 {
                font-size: 32px;
            }

            .stat-strip {
                grid-template-columns: repeat(2, 1fr);
            }

            .section-head {
                flex-direction: column;
                align-items: flex-start;
            }

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

        @media (max-width: 560px) {
            .container {
                padding: 0 18px;
            }

            .product-grid,
            .pub-grid,
            .timeline-cat {
                grid-template-columns: 1fr;
            }

            .stat-item {
                padding: 20px 12px;
            }

            .stat-item .num {
                font-size: 28px;
            }

            .hero-category h1 {
                font-size: 27px;
            }

            .hero-category-inner {
                gap: 24px;
            }

            .hero-figure {
                height: 230px;
            }

            .subscribe-panel {
                padding: 26px 18px;
            }

            .subscribe-form {
                grid-template-columns: 1fr;
            }

            .subscribe-form .btn-primary {
                grid-column: span 1;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .btn-big {
                width: 100%;
            }

            .cta-btns {
                width: 100%;
                flex-direction: column;
            }

            .ticker-line {
                gap: 20px;
                margin-top: 40px;
            }

            .split-section {
                gap: 24px;
            }

            .block-faq {
                margin-top: 12px;
            }

            .section-block {
                padding: 56px 0;
            }

            .faq-question {
                font-size: 15px;
            }

            .faq-answer-inner {
                padding-right: 0;
            }
        }

        .text-btn {
            padding: 12px 22px;
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: 12px;
            background: rgba(255, 255, 255, .02);
            color: #fff;
            font-size: 14px;
        }

        .text-btn:hover {
            background: rgba(255, 255, 255, .06);
            cursor: pointer;
        }

        .data-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 36px;
        }

        .data-card-single {
            padding: 24px;
            border-left: 2px solid var(--blue-main);
        }

        .data-card-single h3 {
            font-size: 17px;
            margin-bottom: 12px;
            color: #fff;
        }

        .data-card-single p {
            color: var(--text-mid);
            font-size: 14px;
        }

/* roulang page: article */
:root {
            --bg: #050A16;
            --bg-deep: #030711;
            --surface: #081120;
            --panel: rgba(16, 32, 56, .72);
            --panel-soft: rgba(11, 26, 43, .55);
            --line: rgba(255, 255, 255, .09);
            --line-hot: rgba(47, 128, 255, .35);
            --text: #E6ECF5;
            --text-2: #A7B3C4;
            --text-3: #708097;
            --brand: #2F80FF;
            --brand-light: #18B7E8;
            --cyan: #00E5A0;
            --amber: #FFB020;
            --danger: #FF5964;
            --radius-xl: 20px;
            --radius-lg: 16px;
            --radius-md: 8px;
            --shadow-card: 0 12px 36px rgba(0, 0, 0, .32);
            --shadow-btn: 0 0 14px rgba(47, 128, 255, .35), 0 0 32px rgba(47, 128, 255, .12);
            --container: 1200px;
            --reading: 760px;
            --space: 80px;
            --space-m: 48px;
            --transition: all .24s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

        a {
            color: var(--text);
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover {
            color: #fff;
        }

        ul,
        ol {
            padding-left: 1.2em;
        }

        button,
        input {
            font: inherit;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 28px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 200;
            background: rgba(5, 10, 22, .76);
            backdrop-filter: blur(16px) saturate(140%);
            -webkit-backdrop-filter: blur(16px) saturate(140%);
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }

        .site-header::after {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(47, 128, 255, .55), transparent);
            pointer-events: none;
        }

        .header-inner {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            gap: 24px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            font-weight: 700;
            letter-spacing: .04em;
            font-size: 19px;
            color: #fff;
        }

        .brand-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--brand);
            box-shadow: 0 0 0 4px rgba(47, 128, 255, .16), 0 0 16px rgba(47, 128, 255, .6);
        }

        .seg-nav .nav-list {
            display: flex;
            list-style: none;
            align-items: center;
            gap: 4px;
            margin: 0;
            padding: 5px;
            background: rgba(255, 255, 255, .035);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 999px;
            flex-wrap: nowrap;
        }

        .seg-nav .nav-item {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 38px;
            padding: 0 18px;
            border-radius: 999px;
            color: var(--text-2);
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
        }

        .seg-nav .nav-item:hover {
            color: #fff;
            background: rgba(255, 255, 255, .05);
        }

        .seg-nav .nav-item.current,
        .seg-nav .nav-item[aria-current="true"] {
            color: #fff;
            background: rgba(47, 128, 255, .2);
            border: 1px solid var(--line-hot);
            box-shadow: 0 0 12px rgba(47, 128, 255, .25);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 44px;
            padding: 0 22px;
            border-radius: var(--radius-md);
            font-weight: 600;
            cursor: pointer;
            border: 0;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, #187BFF, #18B7E8);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }

        .btn-primary:hover {
            filter: brightness(1.1);
            color: #fff;
            transform: translateY(-1px);
        }

        .btn-secondary {
            background: rgba(255, 255, 255, .07);
            color: var(--text);
            border: 1px solid rgba(255, 255, 255, .16);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, .11);
            color: #fff;
            transform: translateY(-1px);
        }

        .btn-header {
            min-height: 40px;
            padding: 0 18px;
            font-size: 14px;
            flex-shrink: 0;
        }

        .article-hero {
            position: relative;
            padding: 92px 0 88px;
            background:
                linear-gradient(180deg, rgba(5, 10, 22, .38) 0%, rgba(5, 10, 22, .82) 76%, var(--bg) 100%),
                linear-gradient(90deg, rgba(5, 10, 22, .36), rgba(8, 18, 36, .22)),
                url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
            border-bottom: 1px solid rgba(255, 255, 255, .07);
            overflow: hidden;
        }

        .article-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, .025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, .025) 1px, transparent 1px);
            background-size: 52px 52px;
            mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .7), transparent 90%);
            pointer-events: none;
        }

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

        .hero-inner {
            max-width: 900px;
            margin: 0 auto;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--text-3);
            margin-bottom: 24px;
        }

        .breadcrumb a {
            color: var(--text-3);
        }

        .breadcrumb a:hover {
            color: #fff;
        }

        .crumb-split {
            opacity: .4;
        }

        .board-cat {
            display: inline-flex;
            align-items: center;
            min-height: 28px;
            padding: 0 12px;
            border-radius: 999px;
            font-size: 13px;
            background: rgba(47, 128, 255, .18);
            border: 1px solid rgba(47, 128, 255, .3);
            color: #E0F0FF;
            margin-bottom: 18px;
        }

        .article-title {
            margin: 0 0 20px;
            font-size: clamp(29px, 5vw, 45px);
            line-height: 1.25;
            font-weight: 700;
            color: #fff;
            letter-spacing: .01em;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 18px;
            color: var(--text-3);
            font-size: 14px;
            padding-top: 4px;
        }

        .article-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .meta-dot {
            display: inline-block;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--cyan);
            box-shadow: 0 0 9px rgba(0, 229, 160, .5);
        }

        .meta-item span {
            color: #D6DFEA;
        }

        .post-section {
            padding: 78px 0 70px;
        }

        .post-layout {
            max-width: var(--reading);
            margin: 0 auto;
        }

        .post-body {
            background: var(--panel-soft);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: var(--radius-xl);
            padding: clamp(26px, 5vw, 48px);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .content-render {
            color: #DDE6F2;
            font-size: 16px;
        }

        .content-render p {
            margin: 0 0 22px;
        }

        .content-render h2 {
            font-size: 26px;
            color: #fff;
            margin: 44px 0 18px;
            padding-left: 16px;
            border-left: 3px solid var(--brand);
            line-height: 1.4;
        }

        .content-render h3 {
            font-size: 20px;
            color: #fff;
            margin: 36px 0 14px;
        }

        .content-render ul,
        .content-render ol {
            margin: 0 0 24px;
            padding-left: 1.4em;
        }

        .content-render li {
            margin-bottom: 8px;
        }

        .content-render blockquote {
            margin: 28px 0;
            padding: 18px 24px;
            border-left: 3px solid var(--brand-light);
            background: rgba(24, 183, 232, .09);
            border-radius: 0 14px 14px 0;
            color: #CDE7FF;
        }

        .content-render img {
            border-radius: 14px;
            margin: 22px 0;
            border: 1px solid rgba(255, 255, 255, .08);
        }

        .content-render table {
            width: 100%;
            border-collapse: collapse;
            margin: 28px 0;
            font-size: 15px;
            background: rgba(0, 0, 0, .18);
            border-radius: 10px;
            overflow: hidden;
        }

        .content-render table th,
        .content-render table td {
            padding: 12px 16px;
            text-align: left;
            border: 1px solid rgba(255, 255, 255, .09);
            color: #D4DDEB;
        }

        .content-render table th {
            background: rgba(47, 128, 255, .14);
            color: #fff;
            font-weight: 600;
        }

        .content-render table tr:nth-child(even) td {
            background: rgba(255, 255, 255, .025);
        }

        .table-scroll {
            overflow-x: auto;
        }

        .post-missing {
            text-align: center;
            padding: 68px 30px;
        }

        .post-missing p {
            font-size: 20px;
            color: var(--text-2);
            margin-bottom: 20px;
        }

        .post-tail {
            margin-top: 26px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
        }

        .post-tags {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
        }

        .post-tags-label {
            font-size: 14px;
            color: var(--text-3);
        }

        .post-tag {
            display: inline-block;
            padding: 5px 12px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .1);
            font-size: 13px;
            color: #C3D2E4;
        }

        .back-links {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
        }

        .article-sep {
            height: 1px;
            background: radial-gradient(circle, rgba(255, 255, 255, .12), transparent 70%);
            max-width: var(--container);
            margin: 0 auto;
        }

        .related-section {
            padding: 78px 0 32px;
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 38px;
        }

        .section-title {
            font-size: clamp(24px, 3vw, 32px);
            line-height: 1.3;
            color: #fff;
            margin: 0;
        }

        .section-sub {
            font-size: 15px;
            color: var(--text-3);
            margin-top: 8px;
        }

        .view-all {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: #9ec3ff;
            font-size: 14px;
        }

        .view-all:hover {
            color: #fff;
        }

        .desc-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .desc-card {
            position: relative;
            background: var(--panel-soft);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            min-height: 100%;
        }

        .desc-card:hover {
            transform: translateY(-4px);
            border-color: rgba(47, 128, 255, .38);
            box-shadow: 0 18px 48px rgba(0, 0, 0, .45);
        }

        .desc-thumb {
            aspect-ratio: 16 / 10;
            background: #0b1a2b center/cover no-repeat;
            border-bottom: 1px solid rgba(255, 255, 255, .07);
            position: relative;
        }

        .desc-thumb::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 45%, rgba(5, 10, 22, .72));
        }

        .desc-body {
            padding: 22px 22px 24px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            flex: 1;
        }

        .desc-label {
            display: inline-flex;
            width: fit-content;
            font-size: 13px;
            background: rgba(47, 128, 255, .16);
            border: 1px solid rgba(47, 128, 255, .25);
            color: #9cc2ff;
            padding: 4px 11px;
            border-radius: 999px;
        }

        .desc-title {
            font-size: 18px;
            line-height: 1.5;
            color: #fff;
            margin: 0;
        }

        .desc-card:hover .desc-title {
            color: #b8d6ff;
        }

        .desc-text {
            margin: 0;
            color: var(--text-2);
            font-size: 14px;
            line-height: 1.7;
        }

        .desc-link {
            margin-top: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 14px;
            color: #6fb0ff;
        }

        .desc-link span {
            border-bottom: 2px solid transparent;
        }

        .desc-card:hover .desc-link span {
            border-color: rgba(111, 176, 255, .55);
        }

        .faq-section {
            padding: 66px 0 74px;
        }

        .faq-list {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, .1);
        }

        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            min-height: 58px;
            background: transparent;
            border: 0;
            cursor: pointer;
            text-align: left;
            color: #fff;
            font-size: 16px;
            font-weight: 500;
            padding: 14px 4px;
            position: relative;
        }

        .faq-q::before {
            content: "";
            width: 2px;
            height: 0;
            background: var(--brand);
            position: absolute;
            left: -12px;
            top: 50%;
            border-radius: 8px;
            transform: translateY(-50%);
            transition: height .24s;
        }

        .faq-q:hover::before,
        .faq-item[open] .faq-q::before {
            height: 24px;
        }

        .faq-q .faq-icon {
            width: 24px;
            height: 24px;
            display: grid;
            place-items: center;
            border-radius: 6px;
            background: rgba(255, 255, 255, .06);
            color: var(--brand);
            font-size: 18px;
            flex-shrink: 0;
        }

        .faq-a {
            color: var(--text-2);
            padding: 0 12px 20px 4px;
            font-size: 15px;
            line-height: 1.75;
        }

        .faq-a p:first-child {
            margin-top: 0;
        }

        .faq-a p:last-child {
            margin-bottom: 0;
        }

        .subscribe-section {
            padding: 0 0 78px;
        }

        .subscribe-card {
            position: relative;
            background:
                linear-gradient(135deg, rgba(12, 26, 48, .9), rgba(7, 14, 27, .95)),
                var(--panel-soft);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: var(--radius-xl);
            padding: clamp(30px, 6vw, 52px);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .subscribe-card::before {
            content: "";
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(47, 128, 255, .14);
            filter: blur(60px);
            position: absolute;
            top: -80px;
            right: -60px;
            pointer-events: none;
        }

        .subscribe-card .container-tight {
            width: 100%;
            position: relative;
            z-index: 1;
        }

        .subscribe-title {
            font-size: clamp(24px, 3.6vw, 32px);
            color: #fff;
            line-height: 1.35;
            text-align: center;
            margin: 0 0 12px;
            letter-spacing: .01em;
        }

        .subscribe-desc {
            max-width: 680px;
            margin: 0 auto 30px;
            text-align: center;
            color: var(--text-2);
            font-size: 15px;
        }

        .subscribe-card form {
            max-width: 680px;
            margin: 0 auto;
            display: flex;
            gap: 12px;
        }

        .subscribe-card .field {
            flex: 1;
            min-width: 0;
        }

        .subscribe-card input[type="text"] {
            width: 100%;
            min-height: 48px;
            padding: 0 16px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, .12);
            background: rgba(255, 255, 255, .06);
            color: #fff;
            outline: none;
            transition: var(--transition);
        }

        .subscribe-card input[type="text"]:focus {
            border-color: rgba(47, 128, 255, .55);
            background: rgba(255, 255, 255, .1);
            box-shadow: 0 0 0 3px rgba(47, 128, 255, .15);
        }

        .modal-tip {
            text-align: center;
            font-size: 13px;
            margin-bottom: 0;
            color: var(--text-3);
        }

        .site-footer {
            background: #040812;
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 58px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 42px;
            padding-bottom: 40px;
        }

        .brand-name-footer {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .brand-name-footer .dot {
            width: 9px;
            height: 9px;
            background: var(--brand);
            box-shadow: 0 0 14px rgba(47, 128, 255, .55);
            border-radius: 50%;
        }

        .footer-about {
            color: var(--text-3);
            font-size: 14px;
            line-height: 1.9;
            max-width: 400px;
            margin-bottom: 0;
        }

        .footer-title {
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            margin: 0 0 16px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 12px;
        }

        .footer-links a {
            color: var(--text-2);
            font-size: 14px;
        }

        .footer-links a:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 4px;
        }

        .footer-contact p {
            color: var(--text-2);
            font-size: 14px;
            margin: 0 0 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-contact i {
            font-style: normal;
            color: var(--brand);
            font-size: 12px;
        }

        .copyright {
            border-top: 1px solid rgba(255, 255, 255, .07);
            padding: 20px 0 24px;
            color: var(--text-3);
            font-size: 13px;
            text-align: center;
        }

        :focus-visible {
            outline: 2px solid #fff;
            outline-offset: 3px;
        }

        @media (max-width: 991px) {
            .header-inner {
                flex-wrap: wrap;
                padding-top: 10px;
                padding-bottom: 10px;
                gap: 10px;
            }

            .seg-nav {
                order: 3;
                width: 100%;
                overflow-x: auto;
                scrollbar-width: none;
            }

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

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

        @media (max-width: 767px) {
            .container {
                padding: 0 18px;
            }

            .article-hero {
                padding: 58px 0 54px;
            }

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

            .section-head {
                flex-direction: column;
                align-items: flex-start;
            }

            .subscribe-card form {
                flex-direction: column;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 520px) {
            .btn-header {
                min-height: 38px;
                font-size: 13px;
                padding: 0 12px;
            }

            .brand {
                font-size: 17px;
            }

            .article-meta {
                gap: 12px;
                font-size: 13px;
            }

            .post-body {
                padding: 22px 18px;
            }

            .article-sep {
                max-width: 90%;
            }
        }

/* roulang page: category2 */
/* ===== design tokens ===== */
:root {
  --bg-deep: #040A14;
  --bg-soft: #081120;
  --panel-blue: #0B1A2B;
  --glass-panel: rgba(16, 32, 51, 0.62);
  --glass-light: rgba(255, 255, 255, 0.045);
  --line: rgba(120, 160, 221, 0.16);
  --line-strong: rgba(120, 160, 221, 0.32);
  --text-main: #E6ECF5;
  --text-sub: #A6B4C9;
  --text-mute: #6F829D;
  --primary: #2F80FF;
  --primary-soft: #18B7E8;
  --glow-green: #00E5A0;
  --amber: #FFB020;
  --danger: #FF5964;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --shadow-card: 0 14px 34px rgba(0, 0, 0, 0.22);
  --shadow-glow: 0 0 0 1px rgba(47, 128, 255, 0.18), 0 10px 28px rgba(47, 128, 255, 0.18);
  --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", "Helvetica Neue", Arial, sans-serif;
  --transition: 0.25s cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ===== base / reset ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-main);
  background: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.75;
  font-size: 16px;
  min-height: 100vh;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition), opacity var(--transition), background var(--transition), border-color var(--transition);
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
  border: none;
  outline: none;
  background: none;
}

ul,
ol {
  list-style: none;
}

:focus-visible {
  outline: 2px solid var(--primary-soft);
  outline-offset: 3px;
  border-radius: 4px;
}

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

section {
  scroll-margin-top: 112px;
}

::selection {
  background: rgba(47, 128, 255, 0.35);
  color: #fff;
}

:-webkit-any(article, aside, nav, section) h1,
:-webkit-any(article, aside, nav, section) h2,
:-webkit-any(article, aside, nav, section) h3 {
  text-rendering: optimizeLegibility;
}

/* ===== buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition), opacity var(--transition);
  user-select: none;
}

.btn-primary {
  background: linear-gradient(135deg, #2F80FF, #1A9BE7);
  color: #fff;
  box-shadow: 0 0 0 1px rgba(47, 128, 255, 0.2), 0 10px 28px rgba(47, 128, 255, 0.22);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #3D8AFF, #22B0EE);
  box-shadow: 0 0 0 1px rgba(47, 128, 255, 0.28), 0 16px 36px rgba(24, 183, 232, 0.24);
  transform: translateY(-1px);
  color: #fff;
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: 0 0 0 1px rgba(47, 128, 255, 0.15), 0 4px 14px rgba(47, 128, 255, 0.12);
  background: linear-gradient(135deg, #2370E8, #138ED0);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid var(--line-strong);
  color: var(--text-main);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(140, 180, 240, 0.45);
  color: #fff;
  transform: translateY(-1px);
}

.btn-ghost:active {
  transform: translateY(1px);
  background: rgba(255, 255, 255, 0.03);
}

.btn-sm {
  height: 36px;
  padding: 0 16px;
  font-size: 14px;
  border-radius: 6px;
}

.btn-block {
  width: 100%;
}

.btn[disabled],
.btn.loading,
.btn.success,
.btn.fail {
  pointer-events: none;
  opacity: 0.9;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary-soft);
  border-bottom: 1px solid rgba(24, 183, 232, 0.2);
  padding-bottom: 1px;
  line-height: 1.5;
  transition: color var(--transition), border-color var(--transition);
}

.text-link:hover {
  color: #70C7FB;
  border-bottom-color: rgba(112, 199, 251, 0.55);
}

/* ===== header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(4, 10, 20, 0.72);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border-bottom: 1px solid rgba(130, 170, 230, 0.12);
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(47, 128, 255, 0.25), rgba(24, 183, 232, 0.18), transparent);
  pointer-events: none;
}

.header-bar {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 68px;
  padding-top: 8px;
  padding-bottom: 8px;
  position: relative;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: #fff;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.brand-dot {
  position: relative;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--primary-soft);
  box-shadow: 0 0 10px rgba(24, 183, 232, 0.8);
}

.brand-dot::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: inherit;
  border: 1px solid rgba(47, 128, 255, 0.38);
  animation: breathe 2.4s infinite ease-in-out;
}

@keyframes breathe {
  0%, 100% { transform: scale(0.8); opacity: 0.5; }
  50% { transform: scale(1.3); opacity: 0.15; }
}

.brand:hover {
  color: #fff;
}

/* segmented nav */
.seg-nav {
  display: flex;
  justify-content: center;
  flex: 1;
  min-width: 0;
}

.nav-list {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 4px;
  background: rgba(10, 22, 40, 0.72);
  border: 1px solid var(--line);
  border-radius: 999px;
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  overflow-x: auto;
  scrollbar-width: none;
  max-width: 100%;
}

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

.nav-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  padding: 0 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-sub);
  white-space: nowrap;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
}

.nav-item:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

.nav-item.current {
  color: #fff;
  background: linear-gradient(135deg, rgba(47, 128, 255, 0.2), rgba(24, 183, 232, 0.12));
  box-shadow: inset 0 0 0 1px rgba(47, 128, 255, 0.3), 0 2px 12px rgba(47, 128, 255, 0.15);
}

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

/* ===== hero / page banner ===== */
.page-hero {
  position: relative;
  padding: 76px 0 64px;
  overflow: hidden;
  background:
    radial-gradient(900px 340px at 82% -10%, rgba(18, 53, 94, 0.65), transparent 65%),
    radial-gradient(700px 400px at 12% 115%, rgba(0, 110, 160, 0.18), transparent 60%),
    var(--bg-deep);
}

.page-hero-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(60, 140, 255, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(60, 140, 255, 0.07) 1px, transparent 1px);
  background-size: 46px 46px;
  opacity: 0.6;
  pointer-events: none;
  mask-image: radial-gradient(75% 95% at 20% 20%, #000 20%, transparent 90%);
  -webkit-mask-image: radial-gradient(75% 95% at 20% 20%, #000 20%, transparent 90%);
}

.page-hero-bg::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 180px;
  background: linear-gradient(to top, rgba(4, 10, 20, 0.95), transparent);
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.55fr);
  gap: 40px;
  align-items: center;
}

.crumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-mute);
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.crumb a {
  color: var(--text-sub);
  transition: color var(--transition);
}

.crumb a:hover {
  color: #fff;
}

.crumb i {
  font-style: normal;
  opacity: 0.45;
}

.page-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 5px 12px 5px 8px;
  border: 1px solid rgba(24, 183, 232, 0.26);
  background: rgba(24, 183, 232, 0.08);
  border-radius: 999px;
  font-size: 13px;
  color: #B9DFF5;
  letter-spacing: 0.04em;
  margin-bottom: 20px;
}

.live-pip {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--glow-green);
  box-shadow: 0 0 10px rgba(0, 229, 160, 0.7);
}

.page-hero h1 {
  font-size: clamp(30px, 4.7vw, 46px);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
  margin: 0 0 16px;
  color: #fff;
}

.page-hero h1 .hl {
  background: linear-gradient(100deg, #fff 0%, #8BC6FF 50%, #4FD4FF 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: inherit;
}

.hero-lead {
  font-size: 17px;
  color: var(--text-sub);
  max-width: 660px;
  margin-bottom: 28px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.hero-note {
  font-size: 13px;
  color: var(--text-mute);
  margin-top: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-note i {
  font-style: normal;
  color: var(--glow-green);
}

/* hero float card */
.hero-float {
  padding: 20px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(16, 38, 66, 0.86), rgba(8, 18, 34, 0.8));
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  position: relative;
  overflow: hidden;
}

.hero-float::before {
  content: "";
  position: absolute;
  top: 0; left: 20px; right: 20px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(47, 128, 255, 0.75), rgba(24, 183, 232, 0.6), transparent);
}

.hero-float-kicker {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--glow-green);
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 14px;
}

.hero-float-kicker::before {
  content: "";
  width: 8px;
  height: 2px;
  background: var(--glow-green);
  box-shadow: 0 0 8px rgba(0, 229, 160, 0.7);
  border-radius: 4px;
}

.float-list li {
  border-left: 1px solid var(--line-strong);
  padding: 4px 0 17px 18px;
  position: relative;
  margin-left: 4px;
}

.float-list li:last-child {
  padding-bottom: 0;
}

.float-list li::after {
  content: "";
  position: absolute;
  left: -3.5px;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary-soft);
  box-shadow: 0 0 9px rgba(24, 183, 232, 0.7);
}

.float-meta {
  display: flex;
  gap: 8px;
  align-items: center;
  font-weight: 600;
  font-size: 14px;
  color: #fff;
  margin-bottom: 5px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 22px;
  padding: 0 8px;
  border-radius: 5px;
  font-size: 12px;
  line-height: 1;
}

.badge-green {
  background: rgba(0, 229, 160, 0.12);
  color: var(--glow-green);
  border: 1px solid rgba(0, 229, 160, 0.2);
}

.badge-blue {
  background: rgba(47, 128, 255, 0.13);
  color: #7AA9F0;
  border: 1px solid rgba(47, 128, 255, 0.25);
}

.badge-amber {
  background: rgba(255, 176, 32, 0.12);
  color: var(--amber);
  border: 1px solid rgba(255, 176, 32, 0.22);
}

.float-desc {
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.7;
}

.hero-float-link {
  margin-top: 17px;
  padding-top: 12px;
  border-top: 1px solid rgba(125, 165, 220, 0.12);
}

/* ===== general section ===== */
.section-block {
  padding: 72px 0;
  position: relative;
}

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

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--primary-soft);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), transparent);
  border-radius: 4px;
}

.section-title {
  font-size: clamp(24px, 3.8vw, 36px);
  font-weight: 700;
  line-height: 1.3;
  color: #fff;
  letter-spacing: -0.015em;
  margin-bottom: 12px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-sub);
  max-width: 760px;
  line-height: 1.8;
}

/* ===== split category layout ===== */
.cat-layout {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: 40px;
  align-items: start;
  padding-top: 36px;
}

.cat-anchors {
  position: sticky;
  top: 96px;
  display: block;
  background: var(--glass-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 18px 10px;
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
}

.cat-anchor-label {
  display: block;
  padding: 0 14px;
  font-size: 12px;
  color: var(--text-mute);
  letter-spacing: 0.12em;
  font-weight: 600;
  margin-bottom: 8px;
}

.cat-anchor-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.4;
  border: 1px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.cat-anchor-list a::before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--primary);
  opacity: 0.4;
  transition: opacity var(--transition), box-shadow var(--transition);
  flex-shrink: 0;
}

.cat-anchor-list a:hover {
  color: #fff;
  background: rgba(47, 128, 255, 0.07);
  border-color: rgba(47, 128, 255, 0.14);
}

.cat-anchor-list a:hover::before,
.cat-anchor-list a.active::before {
  opacity: 1;
  box-shadow: 0 0 8px rgba(47, 128, 255, 0.65);
}

.cat-anchor-list a.active {
  color: #fff;
  background: linear-gradient(90deg, rgba(47, 128, 255, 0.1), rgba(47, 128, 255, 0.02));
  border-color: rgba(47, 128, 255, 0.18);
}

/* right stream */
.cat-main {
  display: flex;
  flex-direction: column;
  gap: 48px;
  min-width: 0;
}

/* feed section */
.feed-section {
  scroll-margin-top: 96px;
}

.feed-head {
  margin-bottom: 22px;
  padding-left: 16px;
  border-left: 3px solid transparent;
  border-image: linear-gradient(to bottom, var(--primary), var(--primary-soft));
  border-image-slice: 1;
}

.feed-kicker {
  font-size: 13px;
  color: var(--primary-soft);
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}

.feed-head h2 {
  font-size: clamp(22px, 3vw, 30px);
  color: #fff;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin-bottom: 8px;
}

.feed-desc {
  font-size: 15px;
  color: var(--text-sub);
  max-width: 780px;
}

.feed-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 24px;
}

/* card */
.feed-card {
  display: grid;
  grid-template-columns: 230px 1fr;
  border-radius: var(--radius-md);
  background: var(--glass-light);
  border: 1px solid var(--line);
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
}

.feed-card:hover {
  transform: translateY(-2px);
  border-color: rgba(70, 140, 255, 0.35);
  background: rgba(255, 255, 255, 0.055);
}

.feed-thumb {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--panel-blue);
  position: relative;
}

.feed-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.9;
  transition: transform 0.6s ease, opacity var(--transition);
}

.feed-card:hover .feed-thumb img {
  opacity: 1;
  transform: scale(1.025);
}

.feed-thumb-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(8, 18, 34, 0.25));
  pointer-events: none;
}

.feed-body {
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.feed-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  font-size: 13px;
  color: var(--text-mute);
}

.feed-tag {
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 9px;
  border-radius: 5px;
  font-size: 12px;
  background: rgba(47, 128, 255, 0.09);
  border: 1px solid rgba(47, 128, 255, 0.2);
  color: #8FBCEF;
}

.feed-body h3 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.45;
  color: #fff;
  margin-bottom: 8px;
}

.feed-body h3 a:hover {
  color: #8EC5F5;
}

.feed-excerpt {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.75;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.feed-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--primary-soft);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity var(--transition), transform var(--transition), color var(--transition);
}

.feed-card:hover .feed-card-link {
  opacity: 1;
  transform: translateX(0);
}

.feed-card-link:hover {
  color: #75C9F8;
}

/* quick entry cards */
.quick-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 18px;
}

.quick-card {
  background: var(--glass-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 28px 22px 24px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition), background var(--transition);
}

.quick-card::after {
  content: "";
  position: absolute;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(47, 128, 255, 0.1);
  filter: blur(28px);
  top: -28px;
  right: -16px;
  transition: transform var(--transition);
}

.quick-card:hover {
  transform: translateY(-3px);
  border-color: rgba(47, 128, 255, 0.3);
}

.quick-card:hover::after {
  transform: scale(1.6);
}

.quick-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(47, 128, 255, 0.15), rgba(24, 183, 232, 0.05));
  border: 1px solid rgba(47, 128, 255, 0.2);
  color: var(--primary-soft);
  font-size: 20px;
  margin-bottom: 18px;
}

.quick-card h3 {
  font-size: 17px;
  color: #fff;
  font-weight: 600;
  margin-bottom: 6px;
}

.quick-card p {
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.7;
}

.quick-card .btn {
  margin-top: 18px;
  height: 34px;
  padding: 0 14px;
  font-size: 13px;
  border-radius: 6px;
}

/* ===== faq ===== */
.faq-layout {
  max-width: 860px;
  margin: 42px auto 0;
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-item:first-child {
  border-top: 1px solid var(--line);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 20px 4px;
  min-height: 64px;
  cursor: pointer;
  position: relative;
  transition: background var(--transition);
}

.faq-question:hover {
  background: linear-gradient(90deg, rgba(47, 128, 255, 0.035), transparent);
}

.faq-q-text {
  font-size: 16px;
  color: #fff;
  font-weight: 600;
  line-height: 1.6;
}

.faq-icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  position: relative;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  transition: transform var(--transition), border-color var(--transition);
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  background: var(--primary-soft);
  border-radius: 2px;
  top: 50%;
  left: 50%;
}

.faq-icon::before {
  width: 10px;
  height: 1.5px;
  transform: translate(-50%, -50%);
}

.faq-icon::after {
  width: 1.5px;
  height: 10px;
  transform: translate(-50%, -50%);
}

.faq-item.open .faq-icon {
  transform: rotate(225deg);
  border-color: rgba(24, 183, 232, 0.45);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.3s ease;
  padding: 0 4px;
}

.faq-item.open .faq-answer {
  max-height: 520px;
  padding-bottom: 20px;
}

.faq-answer-inner {
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.85;
  padding-left: 0;
}

/* ===== insight strip ===== */
.insight-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: 18px;
}

.insight-cell {
  background: linear-gradient(140deg, rgba(16, 32, 51, 0.94), rgba(8, 20, 35, 0.98));
  padding: 24px;
}

.insight-num {
  font-family: "SF Mono", "Roboto Mono", Consolas, monospace;
  font-size: 28px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--primary-soft);
  line-height: 1;
  margin-bottom: 10px;
}

.insight-label {
  font-size: 14px;
  color: #fff;
  font-weight: 500;
  margin-bottom: 4px;
}

.insight-text {
  font-size: 13px;
  color: var(--text-mute);
  line-height: 1.6;
}

/* ===== CTA subscribe ===== */
.subscribe-zone {
  position: relative;
  padding: 78px 0;
}

.subscribe-panel {
  position: relative;
  max-width: 1040px;
  margin: 0 auto;
  background: linear-gradient(145deg, rgba(16, 34, 57, 0.92), rgba(5, 12, 23, 0.92));
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 48px 48px 44px;
  overflow: hidden;
}

.subscribe-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 32px;
  right: 32px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(47, 128, 255, 0.85), rgba(24, 183, 232, 0.75), transparent);
}

.subscribe-panel::after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -80px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(47, 128, 255, 0.18), transparent 70%);
  pointer-events: none;
}

.subscribe-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.subscribe-title {
  font-size: clamp(24px, 3vw, 32px);
  color: #fff;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}

.subscribe-lead {
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.8;
}

.form-panel {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.form-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.input-group {
  flex: 1;
  min-width: 160px;
}

.input-wrap {
  position: relative;
}

.input-wrap input {
  width: 100%;
  height: 48px;
  border-radius: 10px;
  padding: 0 14px 0 38px;
  background: rgba(5, 12, 23, 0.72);
  border: 1px solid rgba(132, 176, 226, 0.2);
  color: var(--text-main);
  font-size: 14px;
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

.input-wrap input::placeholder {
  color: var(--text-mute);
}

.input-wrap input:focus {
  border-color: rgba(47, 128, 255, 0.6);
  background: rgba(8, 16, 32, 0.95);
  box-shadow: 0 0 0 3px rgba(47, 128, 255, 0.12);
}

.input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-mute);
  font-size: 15px;
  line-height: 1;
  pointer-events: none;
}

.form-tip {
  font-size: 12px;
  color: var(--text-mute);
  line-height: 1.6;
}

.form-feedback {
  min-height: 18px;
  font-size: 13px;
  line-height: 1.6;
}

.form-feedback.success {
  color: var(--glow-green);
}

.form-feedback.fail {
  color: var(--danger);
}

.input-hint {
  font-size: 13px;
  color: var(--text-mute);
}

/* ===== footer ===== */
.site-footer {
  background: #040811;
  border-top: 1px solid rgba(130, 170, 230, 0.12);
  margin-top: 40px;
}

.site-footer .container {
  padding: 68px 24px 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr 0.8fr 1fr;
  gap: 44px;
  margin-bottom: 36px;
}

.brand-name-footer {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 19px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}

.brand-name-footer .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary-soft);
  box-shadow: 0 0 10px rgba(24, 183, 232, 0.9);
}

.footer-about {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
  max-width: 340px;
}

.footer-title {
  font-size: 15px;
  color: #fff;
  font-weight: 600;
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}

.footer-links,
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.footer-links a {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.6;
}

.footer-links a:hover {
  color: #fff;
}

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

.footer-contact i {
  font-style: normal;
  color: var(--primary);
  margin-right: 8px;
}

.copyright {
  border-top: 1px solid rgba(120, 160, 220, 0.1);
  padding-top: 24px;
  font-size: 13px;
  color: var(--text-mute);
  line-height: 1.8;
}

.copyright a {
  color: inherit;
}

.copyright a:hover {
  color: #fff;
}

/* ===== responsive ===== */
@media screen and (max-width: 1024px) {
  .header-bar {
    gap: 12px;
  }
  .nav-item {
    padding: 0 14px;
  }
  .hero-inner {
    grid-template-columns: 1fr 280px;
    gap: 24px;
  }
  .cat-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .cat-anchors {
    position: static;
    top: auto;
    overflow-x: auto;
    display: flex;
    padding: 8px;
    scrollbar-width: none;
  }
  .cat-anchor-label {
    display: none;
  }
  .cat-anchor-list {
    display: flex;
    flex-wrap: nowrap;
    gap: 4px;
  }
  .cat-anchor-list a {
    white-space: nowrap;
    padding: 8px 14px;
    font-size: 13px;
  }
  .quick-grid,
  .insight-strip {
    grid-template-columns: repeat(3, 1fr);
  }
  .subscribe-panel {
    padding: 36px 28px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media screen and (max-width: 768px) {
  .header-bar {
    flex-wrap: wrap;
    gap: 6px;
  }
  .brand-text {
    font-size: 17px;
  }
  .seg-nav {
    order: 3;
    width: 100%;
    justify-content: flex-start;
  }
  .nav-list {
    width: 100%;
    border-radius: 14px;
    justify-content: flex-start;
  }
  .header-cta {
    margin-left: auto;
  }
  .hero-inner {
    grid-template-columns: 1fr;
  }
  .hero-float {
    max-width: 560px;
  }
  .section-title {
    font-size: 26px;
  }
  .section-desc {
    font-size: 15px;
  }
  .cat-anchors {
    display: flex;
  }
  .cat-main {
    gap: 40px;
  }
  .feed-list {
    gap: 14px;
  }
  .feed-card {
    grid-template-columns: 1fr;
  }
  .feed-thumb {
    aspect-ratio: 16 / 7;
    min-height: 160px;
  }
  .subscribe-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .quick-grid,
  .insight-strip {
    grid-template-columns: 1fr;
  }
  .quick-card {
    padding: 24px;
  }
  .page-hero {
    padding: 56px 0;
  }
}

@media screen and (max-width: 520px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .header-cta .btn {
    height: 34px;
    padding: 0 12px;
    font-size: 13px;
  }
  .brand {
    font-size: 17px;
  }
  .page-hero h1 {
    font-size: 27px;
  }
  .btn {
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .nav-item {
    padding: 0 14px;
  }
  .feed-body {
    padding: 18px 18px 20px;
  }
  .feed-card-link {
    opacity: 1;
    transform: none;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .subscribe-panel {
    padding: 28px 18px;
    border-radius: 18px;
  }
  .faq-q-text {
    font-size: 15px;
  }
}

/* roulang page: category3 */
:root {
  --bg: #050A16;
  --bg-soft: #0B1526;
  --panel: rgba(16, 32, 51, 0.72);
  --panel-light: rgba(22, 40, 64, 0.62);
  --line: rgba(255, 255, 255, 0.08);
  --line-light: rgba(255, 255, 255, 0.14);
  --primary: #2F80FF;
  --primary-2: #18B7E8;
  --signal: #00E5A0;
  --amber: #FFB020;
  --text: #E6ECF5;
  --text-soft: #A7B3C4;
  --text-dim: #708097;
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-chip: 999px;
  --shadow: 0 16px 48px rgba(0, 0, 0, 0.24);
  --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-main);
  background-color: var(--bg);
  background-image: radial-gradient(circle at 15% 0%, rgba(47, 128, 255, 0.08), transparent 34%), radial-gradient(circle at 70% 20%, rgba(24, 183, 232, 0.05), transparent 28%);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
body.nav-open {
  overflow: hidden;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  display: block;
  max-width: 100%;
}
ul {
  list-style: none;
}
button,
input {
  font: inherit;
  border: 0;
  background: none;
}
button {
  cursor: pointer;
}
.container {
  width: min(1200px, calc(100% - 40px));
  margin-inline: auto;
}
.skip-link {
  position: absolute;
  left: -9999px;
  top: 12px;
  z-index: 999;
  background: var(--bg-soft);
  border: 1px solid var(--line-light);
  padding: 8px 18px;
  border-radius: var(--radius-btn);
}
.skip-link:focus {
  left: 16px;
}
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 6px;
}

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(5, 10, 22, 0.78);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid var(--line);
}
.site-header::after {
  content: "";
  display: block;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(47, 128, 255, 0.5), transparent);
  opacity: 0.42;
}
.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 74px;
}
.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #fff;
}
.logo-mark {
  position: relative;
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.logo-dot {
  display: block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 5px rgba(47, 128, 255, 0.14), 0 0 18px rgba(47, 128, 255, 0.7);
}
.logo-mark::before,
.logo-mark::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 1px;
  background: rgba(47, 128, 255, 0.45);
  left: 4px;
}
.logo-mark::before {
  top: 7px;
}
.logo-mark::after {
  bottom: 6px;
}
.seg-nav {
  flex: 1;
  display: flex;
  justify-content: center;
  min-width: 390px;
}
.nav-list {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid var(--line);
  padding: 5px;
  border-radius: 999px;
}
.nav-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 38px;
  padding: 0 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-soft);
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.nav-item:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}
.nav-item.current {
  color: #fff;
  background: linear-gradient(135deg, rgba(47, 128, 255, 0.24), rgba(24, 183, 232, 0.08));
  box-shadow: inset 0 0 0 1px rgba(47, 128, 255, 0.58), 0 0 14px rgba(47, 128, 255, 0.22);
}
.header-cta {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: 0 8px 24px rgba(47, 128, 255, 0.28);
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}
.header-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 30px rgba(47, 128, 255, 0.4);
  filter: brightness(1.05);
}
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-light);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  color: #fff;
  font-size: 22px;
  line-height: 1;
}

/* hero */
.page-hero {
  position: relative;
  background-color: #070D1A;
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(92deg, rgba(5, 10, 22, 0.94) 12%, rgba(6, 14, 26, 0.82) 55%, rgba(8, 18, 32, 0.66) 100%);
}
.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.14) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: 0.12;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  padding: 74px 0 70px;
}
.crumb {
  font-size: 13px;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
}
.crumb a {
  color: var(--text-soft);
  transition: color 0.2s;
}
.crumb a:hover {
  color: #fff;
}
.crumb i {
  font-style: normal;
  opacity: 0.5;
}
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--signal);
  background: rgba(0, 229, 160, 0.08);
  border: 1px solid rgba(0, 229, 160, 0.2);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 20px;
}
.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 4px rgba(0, 229, 160, 0.16);
}
.hero-title {
  font-size: clamp(30px, 5vw, 46px);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: 0.01em;
  max-width: 760px;
  color: #fff;
}
.hero-desc {
  margin-top: 22px;
  max-width: 690px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-soft);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  box-shadow: 0 10px 28px rgba(47, 128, 255, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(47, 128, 255, 0.42);
}
.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line-light);
  color: #e8eef7;
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}
.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 46px;
}
.hero-fact {
  min-height: 96px;
  padding: 18px 20px;
  background: rgba(12, 24, 42, 0.66);
  border: 1px solid var(--line);
  border-top: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 14px;
  backdrop-filter: blur(8px);
}
.hero-fact-label {
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}
.hero-fact-value {
  font-size: 14px;
  color: #e6eef9;
  line-height: 1.6;
}

/* section rhythm */
.block {
  padding: 74px 0;
}
.block-tight {
  padding: 52px 0;
}
.section-title-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 30px;
}
.section-title {
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.3;
  font-weight: 800;
  color: #f0f5fb;
}
.section-note {
  color: var(--text-dim);
  font-size: 14px;
  max-width: 320px;
  text-align: right;
}

/* countdown */
.countdown-card {
  background: linear-gradient(150deg, rgba(16, 32, 51, 0.72), rgba(8, 16, 29, 0.82));
  border: 1px solid var(--line);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 20px;
  padding: 32px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.countdown-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--primary), var(--signal));
  box-shadow: 0 0 24px rgba(47, 128, 255, 0.7);
}
.countdown-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 24px;
}
.countdown-header h2 {
  font-size: 20px;
  font-weight: 700;
}
.state-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: #fff;
  background: rgba(0, 229, 160, 0.11);
  border: 1px solid rgba(0, 229, 160, 0.22);
  border-radius: 999px;
  padding: 5px 12px;
}
.count-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 12px;
}
.count-item {
  background: rgba(3, 8, 16, 0.5);
  border: 1px solid var(--line);
  border-bottom: 1px solid rgba(47, 128, 255, 0.24);
  border-radius: 14px;
  text-align: center;
  padding: 20px 12px 16px;
}
.count-num {
  font-size: clamp(36px, 5vw, 54px);
  line-height: 1;
  font-weight: 800;
  color: var(--signal);
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 24px rgba(0, 229, 160, 0.24);
}
.count-label {
  display: block;
  font-size: 13px;
  color: var(--text-dim);
  margin-top: 8px;
}
.countdown-hint {
  margin-top: 16px;
  color: var(--text-dim);
  font-size: 13px;
}

/* 60 / 40 */
.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(300px, 2fr);
  gap: 28px;
  align-items: start;
}
.detail-main {
  min-width: 0;
}
.aside-column {
  position: sticky;
  top: 96px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.glass-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-card);
  backdrop-filter: blur(10px);
  overflow: hidden;
}
.card-body {
  padding: 28px;
}
.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--primary-2);
  margin-bottom: 12px;
}
.media-frame {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #07101d;
  position: relative;
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(3, 7, 14, 0.58));
}
.card-title {
  font-size: 22px;
  font-weight: 700;
  color: #f2f6fc;
  line-height: 1.4;
  margin: 16px 0 12px;
}
.card-body p {
  color: var(--text-soft);
}
.point-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin-top: 22px;
}
.point-list li {
  position: relative;
  padding: 12px 16px 12px 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--text-soft);
  font-size: 14px;
  line-height: 1.7;
}
.point-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 19px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px rgba(47, 128, 255, 0.55);
}
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}
.tag {
  display: inline-flex;
  align-items: center;
  height: 26px;
  padding: 0 10px;
  border-radius: 7px;
  background: rgba(47, 128, 255, 0.12);
  color: #b9d4ff;
  font-size: 12px;
  border: 1px solid rgba(47, 128, 255, 0.2);
}

/* aside cards */
.aside-main {
  background: linear-gradient(150deg, rgba(16, 32, 51, 0.84), rgba(8, 16, 29, 0.92));
  border: 1px solid var(--line);
  border-top: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: var(--radius-card);
  color: #fff;
  padding: 26px;
}
.aside-main .aside-title {
  font-size: 19px;
  font-weight: 700;
}
.aside-subcopy {
  font-size: 14px;
  color: var(--text-soft);
  margin-top: 10px;
}
.aside-date {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-dim);
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}
.aside-btn {
  width: 100%;
  margin-top: 20px;
}
.side-card {
  background: var(--panel-light);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
}
.side-card-head {
  font-size: 14px;
  font-weight: 700;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  color: #dce7f4;
}
.side-card-body {
  padding: 8px 0;
}
.side-link {
  display: flex;
  gap: 12px;
  padding: 12px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  transition: background 0.2s ease;
}
.side-link:last-child {
  border-bottom: 0;
}
.side-link:hover {
  background: rgba(47, 128, 255, 0.06);
}
.side-thumb {
  width: 76px;
  height: 52px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
  background: #0B1621;
}
.side-link-title {
  font-size: 14px;
  line-height: 1.5;
  color: #dbe6f2;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.side-link-meta {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 4px;
}

/* schedule */
.table-block {
  background: rgba(7, 14, 25, 0.42);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 18px;
  overflow: hidden;
}
.table-wrap {
  overflow-x: auto;
  border-radius: 10px;
}
.live-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  background: rgba(10, 19, 34, 0.6);
}
.live-table th {
  background: rgba(23, 41, 66, 0.8);
  color: #b9c6d9;
  font-size: 13px;
  font-weight: 600;
  text-align: left;
  padding: 13px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}
.live-table td {
  padding: 16px;
  font-size: 14px;
  color: var(--text-soft);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.live-table tr:last-child td {
  border-bottom: 0;
}
.live-table tbody tr:hover {
  background: rgba(47, 128, 255, 0.05);
}
.live-table td strong {
  color: #eef4fb;
  font-weight: 600;
}
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(255, 176, 32, 0.1);
  color: var(--amber);
  border: 1px solid rgba(255, 176, 32, 0.18);
}
.status-pill.on {
  background: rgba(0, 229, 160, 0.08);
  color: var(--signal);
  border-color: rgba(0, 229, 160, 0.2);
}
.action-link {
  font-size: 13px;
  color: #8bbcff;
  font-weight: 600;
  white-space: nowrap;
}
.action-link:hover {
  color: #fff;
  text-decoration: underline;
}

/* flow steps */
.step-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.step-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 26px;
  position: relative;
  transition: transform 0.22s ease, border-color 0.22s ease, background 0.22s ease;
}
.step-card:hover {
  transform: translateY(-4px);
  border-color: rgba(47, 128, 255, 0.32);
  background: rgba(16, 32, 51, 0.84);
}
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(47, 128, 255, 0.22), rgba(24, 183, 232, 0.1));
  border: 1px solid rgba(47, 128, 255, 0.4);
  color: #8ec0ff;
  font-size: 16px;
  font-weight: 800;
}
.step-card h3 {
  margin-top: 18px;
  font-size: 18px;
  color: #f1f6fd;
}
.step-card p {
  margin-top: 10px;
  color: var(--text-soft);
  font-size: 14px;
  line-height: 1.8;
}

/* subscribe */
.subscribe-band {
  position: relative;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(12, 27, 48, 0.92), rgba(5, 12, 24, 0.96));
  border: 1px solid rgba(47, 128, 255, 0.3);
  padding: 42px 44px;
  overflow: hidden;
}
.subscribe-band::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 229, 160, 0.6), transparent);
}
.subscribe-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr;
  gap: 30px;
  align-items: center;
}
.subscribe-title {
  font-size: 24px;
  font-weight: 800;
  color: #f4f8fd;
  margin-bottom: 12px;
}
.subscribe-copy {
  color: var(--text-soft);
  font-size: 15px;
  max-width: 480px;
}
.sub-form {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}
.sub-input {
  min-height: 46px;
  width: 100%;
  background: rgba(3, 10, 20, 0.7);
  border: 1px solid var(--line-light);
  border-radius: var(--radius-btn);
  padding: 0 16px;
  color: #fff;
  font-size: 15px;
  transition: border-color 0.2s ease;
}
.sub-input::placeholder {
  color: #5d6c83;
}
.sub-input:focus {
  outline: 0;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(47, 128, 255, 0.18);
}
.privacy-line {
  margin-top: 12px;
  font-size: 12px;
  color: var(--text-dim);
}

/* FAQ */
.faq-list {
  max-width: 860px;
}
.faq-item {
  border-bottom: 1px solid var(--line);
  border-radius: 6px;
  transition: background 0.2s ease;
}
.faq-item:hover {
  background: rgba(255, 255, 255, 0.025);
}
.faq-item::before {
  content: "";
  display: block;
  width: 2px;
  height: 0;
  background: var(--primary);
  box-shadow: 0 0 12px rgba(47, 128, 255, 0.9);
  transition: height 0.25s ease;
}
.faq-item.expanded::before {
  height: 22px;
}
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  min-height: 64px;
  padding: 14px 10px;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: #dce7f4;
  transition: color 0.2s ease;
}
.faq-q:hover {
  color: #fff;
}
.faq-icon {
  width: 28px;
  height: 28px;
  position: relative;
  border-radius: 50%;
  background: rgba(47, 128, 255, 0.1);
  border: 1px solid rgba(47, 128, 255, 0.24);
  flex-shrink: 0;
  transition: transform 0.25s ease;
}
.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  left: 8px;
  right: 8px;
  top: 13px;
  height: 2px;
  background: #81b6ff;
  border-radius: 2px;
}
.faq-icon::after {
  transform: rotate(90deg);
  transition: transform 0.25s ease;
}
.faq-item.expanded .faq-icon {
  transform: rotate(90deg);
}
.faq-item.expanded .faq-icon::after {
  transform: rotate(0deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.36s ease;
}
.faq-answer p {
  padding: 0 38px 24px 12px;
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.9;
}

/* bottom cta */
.mini-cta {
  margin-top: 24px;
  text-align: center;
  padding: 20px 0 0;
}
.mini-cta p {
  color: var(--text-dim);
  font-size: 14px;
  margin-bottom: 18px;
}

/* footer */
.site-footer {
  margin-top: 100px;
  background: rgba(3, 8, 17, 0.92);
  border-top: 1px solid var(--line);
}
.footer-inner {
  padding: 62px 0 38px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.8fr 0.8fr 1fr;
  gap: 36px;
}
.brand-name-footer {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: #f3f7fc;
}
.brand-name-footer .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 14px var(--primary);
}
.footer-about {
  margin-top: 16px;
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.9;
  max-width: 400px;
}
.footer-title {
  color: #cbd8e9;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
  color: var(--text-soft);
}
.footer-links a {
  transition: color 0.2s ease;
}
.footer-links a:hover {
  color: #fff;
}
.footer-contact p {
  font-size: 14px;
  color: var(--text-soft);
  margin-bottom: 8px;
}
.footer-contact i {
  font-style: normal;
  color: var(--primary-2);
  margin-right: 6px;
}
.copyright {
  margin-top: 48px;
  border-top: 1px solid var(--line);
  padding-top: 20px;
  text-align: center;
  color: #58677d;
  font-size: 13px;
  line-height: 1.8;
}

/* responsive */
@media (max-width: 1080px) {
  .header-cta {
    display: none;
  }
  .hero-facts {
    grid-template-columns: 1fr 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 960px) {
  .header-row {
    flex-wrap: wrap;
    min-height: 70px;
    padding: 10px 0;
  }
  .seg-nav {
    order: 5;
    width: 100%;
    min-width: 0;
    display: none;
    justify-content: stretch;
    margin-top: 4px;
  }
  .seg-nav.open {
    display: block;
  }
  .nav-list {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    border-radius: 16px;
    padding: 8px;
  }
  .nav-item {
    justify-content: flex-start;
    height: 44px;
    border-radius: 10px;
    padding: 0 16px;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .detail-layout {
    grid-template-columns: 1fr;
  }
  .aside-column {
    position: static;
  }
  .step-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 820px) {
  .block {
    padding: 54px 0;
  }
  .hero-inner {
    padding: 54px 0 48px;
  }
  .section-title-row {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }
  .section-note {
    text-align: left;
    max-width: none;
  }
  .subscribe-inner {
    grid-template-columns: 1fr;
  }
  .subscribe-band {
    padding: 32px 22px;
  }
}
@media (max-width: 600px) {
  .container {
    width: min(100% - 28px, 1200px);
  }
  .site-logo {
    font-size: 16px;
  }
  .hero-title {
    font-size: 30px;
  }
  .hero-desc {
    font-size: 15px;
  }
  .hero-facts {
    grid-template-columns: 1fr;
  }
  .countdown-card {
    padding: 22px 16px;
  }
  .count-grid {
    gap: 8px;
  }
  .count-item {
    padding: 16px 6px 12px;
  }
  .count-num {
    font-size: 30px;
  }
  .count-label {
    font-size: 12px;
  }
  .point-list {
    grid-template-columns: 1fr;
  }
  .sub-form {
    flex-direction: column;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-contact {
    margin-bottom: 8px;
  }
  .copyright {
    margin-top: 24px;
  }
}
@media (hover: none) {
  .btn:hover,
  .step-card:hover {
    transform: none;
  }
}