/* ============================================================================
   台球天梯排位系统 v4.0 · 官方网站设计系统
   Billiards Ladder · Official Site Design System
   视觉口径：深空暗色 + 玻璃拟态 + 渐变高光（高科技感 / iOS 质感）
   ========================================================================== */

/* ---------------------------------------------------------------- 1. Tokens */
:root {
  /* 品牌色（与产品端 admin/tokens.css、bigscreen 调色板同源） */
  --blue: #2f6bff;
  --blue-deep: #1f4fd8;
  --cyan: #00e5ff;
  --sky: #58a6ff;
  --violet: #7c5cff;
  --gold: #ffb300;
  --gold-soft: #ffd54f;
  --green: #12b76a;
  --red: #ff4d6d;

  /* 深空层级 */
  --ink-0: #04060c;
  --ink-1: #070b14;
  --ink-2: #0a1020;
  --ink-3: #0e1526;

  /* 玻璃与描边 */
  --glass: rgba(255, 255, 255, 0.045);
  --glass-2: rgba(255, 255, 255, 0.07);
  --hair: rgba(255, 255, 255, 0.085);
  --hair-strong: rgba(255, 255, 255, 0.16);

  /* 文本 */
  --t1: #f4f7fc;
  --t2: rgba(226, 236, 255, 0.68);
  --t3: rgba(226, 236, 255, 0.44);
  --t4: rgba(226, 236, 255, 0.3);

  /* 渐变 */
  --grad-brand: linear-gradient(120deg, #2f6bff 0%, #00a3ff 55%, #00e5ff 100%);
  --grad-text: linear-gradient(100deg, #ffffff 0%, #cfe0ff 40%, #6fd8ff 100%);
  --grad-gold: linear-gradient(120deg, #ffd54f, #ffb300 60%, #ff8a00);

  /* 圆角 */
  --r-xs: 8px;
  --r-sm: 12px;
  --r-md: 18px;
  --r-lg: 24px;
  --r-xl: 32px;
  --r-pill: 999px;

  /* 阴影 */
  --sh-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --sh-md: 0 18px 40px -18px rgba(0, 0, 0, 0.8);
  --sh-lg: 0 40px 90px -30px rgba(0, 0, 0, 0.9);
  --sh-glow: 0 18px 55px -18px rgba(47, 107, 255, 0.75);

  /* 版心 */
  --wrap: 1200px;
  --ease: cubic-bezier(0.19, 1, 0.22, 1);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
    "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", "Microsoft YaHei",
    system-ui, sans-serif;
  --mono: "SF Mono", ui-monospace, "JetBrains Mono", Menlo, Consolas, monospace;
}

/* ------------------------------------------------------- 2. Reset & base */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  background: var(--ink-0);
  color: var(--t1);
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.14;
}
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

::selection { background: rgba(47, 107, 255, 0.42); }

/* 滚动条（桌面） */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--ink-1); }
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  border: 3px solid var(--ink-1);
}
::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.24); }

/* --------------------------------------------------- 3. Ambient background */
.ambient {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(900px 620px at 12% -6%, rgba(47, 107, 255, 0.26), transparent 62%),
    radial-gradient(760px 520px at 92% 6%, rgba(0, 229, 255, 0.14), transparent 60%),
    radial-gradient(900px 700px at 50% 108%, rgba(124, 92, 255, 0.14), transparent 62%),
    linear-gradient(180deg, #04060c 0%, #05080f 40%, #04060c 100%);
}
.ambient::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(1100px 700px at 50% 0%, #000 12%, transparent 78%);
  -webkit-mask-image: radial-gradient(1100px 700px at 50% 0%, #000 12%, transparent 78%);
}
.noise {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.32;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
}

/* ------------------------------------------------------------- 4. Layout */
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.wrap-wide { max-width: 1340px; }
section { position: relative; }
.section { padding: 132px 0; }
.section-sm { padding: 88px 0; }
.center { text-align: center; }
.mt-s { margin-top: 12px; }
.mt-m { margin-top: 24px; }
.mt-l { margin-top: 44px; }
.mt-xl { margin-top: 72px; }

/* 分区标题 */
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  height: 32px;
  padding: 0 15px;
  border-radius: var(--r-pill);
  border: 1px solid var(--hair);
  background: var(--glass);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--t2);
}
.kicker::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--grad-brand);
  box-shadow: 0 0 12px 2px rgba(0, 229, 255, 0.7);
}

.h-display {
  font-size: clamp(40px, 5.6vw, 76px);
  line-height: 1.06;
  letter-spacing: -0.038em;
  font-weight: 600;
}
.h-section {
  font-size: clamp(30px, 3.5vw, 48px);
  letter-spacing: -0.032em;
  margin-top: 22px;
}
.h-card { font-size: 19px; letter-spacing: -0.02em; }
.lead {
  margin-top: 20px;
  font-size: clamp(16px, 1.35vw, 18.5px);
  line-height: 1.72;
  color: var(--t2);
  max-width: 66ch;
}
.center .lead { margin-left: auto; margin-right: auto; }
.grad-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.grad-cyan {
  background: linear-gradient(100deg, #6fd8ff 0%, #2f6bff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.grad-gold {
  background: var(--grad-gold);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* -------------------------------------------------------------- 5. Navbar */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: background 0.45s var(--ease), border-color 0.45s var(--ease),
    backdrop-filter 0.45s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(6, 9, 17, 0.72);
  backdrop-filter: blur(26px) saturate(180%);
  -webkit-backdrop-filter: blur(26px) saturate(180%);
  border-bottom-color: var(--hair);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 30px;
  height: 70px;
}
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-mark {
  width: 38px; height: 38px;
  border-radius: 11px;
  box-shadow: 0 8px 22px -8px rgba(47, 107, 255, 0.9);
  flex-shrink: 0;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name { font-size: 15.5px; font-weight: 600; letter-spacing: -0.01em; }
.brand-sub {
  font-size: 9.5px;
  letter-spacing: 0.22em;
  color: var(--t3);
  text-transform: uppercase;
}
.nav-links { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav-links a {
  padding: 9px 14px;
  border-radius: var(--r-pill);
  font-size: 14.5px;
  color: var(--t2);
  transition: color 0.25s, background 0.25s;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--t1); background: var(--glass); }
.nav-links a.active { color: var(--t1); background: var(--glass-2); }
.nav-cta { display: flex; align-items: center; gap: 10px; }
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border-radius: 12px;
  border: 1px solid var(--hair);
  background: var(--glass);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.nav-toggle span {
  display: block; width: 16px; height: 1.5px; background: var(--t1);
  position: relative;
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 16px; height: 1.5px; background: var(--t1);
}
.nav-toggle span::before { top: -5px; }
.nav-toggle span::after { top: 5px; }

/* ------------------------------------------------------------- 6. Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  height: 46px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.01em;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease),
    background 0.3s, border-color 0.3s, opacity 0.3s;
}
.btn:active { transform: scale(0.97); }
.btn-primary {
  background: var(--grad-brand);
  color: #fff;
  box-shadow: var(--sh-glow), inset 0 1px 0 rgba(255, 255, 255, 0.28);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 24px 65px -18px rgba(47, 107, 255, 0.95); }
.btn-ghost {
  background: var(--glass);
  border-color: var(--hair);
  color: var(--t1);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
}
.btn-ghost:hover { background: var(--glass-2); border-color: var(--hair-strong); transform: translateY(-2px); }
.btn-sm { height: 38px; padding: 0 18px; font-size: 14px; }
.btn-lg { height: 54px; padding: 0 32px; font-size: 16.5px; }
.btn-block { width: 100%; }
.btn .arrow { transition: transform 0.35s var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }

/* ------------------------------------------------------------ 7. Hero */
.hero {
  position: relative;
  padding: 172px 0 96px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: url("../hero-bg.jpg");
  background-size: cover;
  background-position: 62% 50%;
  opacity: 0.5;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.95) 0%, rgba(0, 0, 0, 0.45) 52%, transparent 92%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.95) 0%, rgba(0, 0, 0, 0.45) 52%, transparent 92%);
}
.hero-inner { position: relative; }
.hero h1 { margin-top: 26px; }
.hero .lead { max-width: 60ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 38px; }
.hero-note {
  display: flex; flex-wrap: wrap; gap: 10px 22px;
  margin-top: 30px; font-size: 13.5px; color: var(--t3);
}
.hero-note span { display: inline-flex; align-items: center; gap: 7px; }
.hero-note svg { color: var(--cyan); flex-shrink: 0; }

/* 指标条 */
.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin-top: 78px;
  border: 1px solid var(--hair);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--hair);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}
.metric { background: rgba(7, 11, 20, 0.72); padding: 26px 24px; }
.metric-value {
  font-size: clamp(26px, 2.6vw, 36px);
  font-weight: 600;
  letter-spacing: -0.035em;
  font-variant-numeric: tabular-nums;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.metric-label { margin-top: 6px; font-size: 13.5px; color: var(--t3); }

/* 大屏预览（Hero 视觉） */
.hero-visual { position: relative; margin-top: 84px; }
.showcase-frame {
  position: relative;
  border-radius: var(--r-xl);
  border: 1px solid var(--hair);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.02));
  padding: 10px;
  box-shadow: var(--sh-lg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}
.showcase-frame::after {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(140deg, rgba(0, 229, 255, 0.5), transparent 38%, transparent 62%, rgba(47, 107, 255, 0.45));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}
.showcase-frame img { border-radius: 24px; width: 100%; height: auto; }
.showcase-glow {
  position: absolute;
  left: 10%; right: 10%; bottom: -60px; height: 140px;
  background: radial-gradient(60% 100% at 50% 0%, rgba(47, 107, 255, 0.55), transparent 70%);
  filter: blur(44px);
  z-index: -1;
}
.float-chip {
  position: absolute;
  display: flex; align-items: center; gap: 10px;
  padding: 12px 16px;
  border-radius: 16px;
  border: 1px solid var(--hair);
  background: rgba(8, 12, 22, 0.78);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  box-shadow: var(--sh-md);
  font-size: 13px;
  animation: floaty 7s ease-in-out infinite;
}
.float-chip b { font-weight: 600; }
.float-chip .dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--green);
  box-shadow: 0 0 10px 2px rgba(18, 183, 106, 0.8);
}
.float-chip .k { color: var(--t3); font-size: 12px; }
.chip-tl { top: 6%; left: -26px; }
.chip-br { bottom: 12%; right: -26px; animation-delay: -3.5s; }
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-11px); }
}

/* 跑马灯：实时对局流水 */
.ticker {
  margin-top: 46px;
  border: 1px solid var(--hair);
  border-radius: var(--r-pill);
  background: var(--glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  overflow: hidden;
  display: flex;
  align-items: center;
  gap: 0;
  mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
}
.ticker-label {
  flex-shrink: 0;
  display: flex; align-items: center; gap: 8px;
  padding: 14px 20px;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--t3);
  border-right: 1px solid var(--hair);
}
.ticker-track { display: flex; gap: 44px; padding: 14px 26px; white-space: nowrap; animation: slide 34s linear infinite; }
.ticker:hover .ticker-track { animation-play-state: paused; }
.ticker-item { display: inline-flex; align-items: center; gap: 11px; font-size: 13.5px; color: var(--t2); }
.ticker-item b { color: var(--t1); font-weight: 500; }
.ticker-item .win { color: var(--cyan); font-variant-numeric: tabular-nums; }
.ticker-item .lose { color: var(--t3); font-variant-numeric: tabular-nums; }
@keyframes slide { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ------------------------------------------------------------- 8. Cards */
.grid { display: grid; gap: 20px; }
.g-2 { grid-template-columns: repeat(2, 1fr); }
.g-3 { grid-template-columns: repeat(3, 1fr); }
.g-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  position: relative;
  padding: 30px 28px;
  border-radius: var(--r-lg);
  border: 1px solid var(--hair);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.062), rgba(255, 255, 255, 0.018));
  backdrop-filter: blur(22px) saturate(170%);
  -webkit-backdrop-filter: blur(22px) saturate(170%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
  transition: transform 0.5s var(--ease), border-color 0.4s, box-shadow 0.5s var(--ease);
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.55), transparent);
  opacity: 0;
  transition: opacity 0.5s;
}
.card:hover {
  transform: translateY(-6px);
  border-color: var(--hair-strong);
  box-shadow: 0 34px 70px -34px rgba(0, 0, 0, 0.95), 0 0 0 1px rgba(0, 229, 255, 0.08);
}
.card:hover::before { opacity: 1; }
.card-icon {
  width: 46px; height: 46px;
  border-radius: 14px;
  display: grid; place-items: center;
  background: linear-gradient(150deg, rgba(47, 107, 255, 0.28), rgba(0, 229, 255, 0.14));
  border: 1px solid rgba(120, 190, 255, 0.24);
  color: #bfe4ff;
  margin-bottom: 20px;
}
.card-icon.gold {
  background: linear-gradient(150deg, rgba(255, 179, 0, 0.26), rgba(255, 138, 0, 0.12));
  border-color: rgba(255, 200, 90, 0.3);
  color: #ffdd8f;
}
.card p { margin-top: 12px; color: var(--t2); font-size: 14.6px; line-height: 1.7; }
.card .tag-row { margin-top: 18px; display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-size: 12px;
  padding: 4px 11px;
  border-radius: var(--r-pill);
  border: 1px solid var(--hair);
  background: rgba(255, 255, 255, 0.04);
  color: var(--t3);
}

/* 大卡片（左右分栏） */
.split {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 64px;
  align-items: center;
}
.split.reverse { grid-template-columns: 1.15fr 1fr; }
.split.reverse .split-media { order: 2; }
.feature-list { margin-top: 30px; display: grid; gap: 16px; }
.feature-list li { display: flex; gap: 13px; align-items: flex-start; font-size: 15.2px; color: var(--t2); }
.feature-list .tick {
  flex-shrink: 0;
  width: 22px; height: 22px;
  border-radius: 7px;
  display: grid; place-items: center;
  background: rgba(0, 229, 255, 0.12);
  border: 1px solid rgba(0, 229, 255, 0.3);
  color: var(--cyan);
  margin-top: 2px;
}
.feature-list b { color: var(--t1); font-weight: 500; }

/* 设备外框 */
.device {
  position: relative;
  border-radius: 30px;
  border: 1px solid var(--hair);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.02));
  padding: 8px;
  box-shadow: var(--sh-lg);
}
.device img { border-radius: 23px; width: 100%; height: auto; }
.device-phone { max-width: 320px; border-radius: 42px; padding: 9px; }
.device-phone img { border-radius: 34px; }
.device-phone::after {
  content: "";
  position: absolute;
  top: 18px; left: 50%; transform: translateX(-50%);
  width: 78px; height: 5px; border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
}
.device-glow {
  position: absolute; inset: -8% -8% -18% -8%;
  background: radial-gradient(50% 60% at 50% 45%, rgba(47, 107, 255, 0.34), transparent 72%);
  filter: blur(50px);
  z-index: -1;
}

/* --------------------------------------------------------- 9. 标签切换 */
.tabs {
  display: inline-flex;
  gap: 4px;
  padding: 5px;
  border-radius: var(--r-pill);
  border: 1px solid var(--hair);
  background: var(--glass);
  backdrop-filter: blur(22px) saturate(180%);
  -webkit-backdrop-filter: blur(22px) saturate(180%);
  flex-wrap: wrap;
  justify-content: center;
}
.tab {
  padding: 9px 20px;
  border: 0;
  border-radius: var(--r-pill);
  background: transparent;
  color: var(--t2);
  font-size: 14.5px;
  cursor: pointer;
  transition: color 0.3s, background 0.35s var(--ease), box-shadow 0.35s;
  white-space: nowrap;
}
.tab:hover { color: var(--t1); }
.tab.active {
  color: #fff;
  background: linear-gradient(120deg, rgba(47, 107, 255, 0.95), rgba(0, 163, 255, 0.9));
  box-shadow: 0 12px 30px -14px rgba(47, 107, 255, 0.95), inset 0 1px 0 rgba(255, 255, 255, 0.28);
}
.tab-panels { margin-top: 44px; }
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeUp 0.7s var(--ease); }
.panel-grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 56px;
  align-items: center;
}
.panel-grid.reverse { grid-template-columns: 1.25fr 1fr; }
.panel-grid.reverse .panel-media { order: 2; }
.panel-media { display: flex; justify-content: center; }
.panel-copy h3 { font-size: clamp(24px, 2.4vw, 32px); letter-spacing: -0.028em; }
.panel-copy .role {
  display: inline-block;
  margin-bottom: 14px;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}
.panel-copy p { margin-top: 16px; color: var(--t2); }
.spec-list {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 22px;
}
.spec-list div { border-top: 1px solid var(--hair); padding-top: 12px; }
.spec-list dt { font-size: 12.5px; color: var(--t3); }
.spec-list dd { margin: 4px 0 0; font-size: 15px; font-weight: 500; }

/* ------------------------------------------------------- 10. 段位天梯 */
.ladder {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 12px;
  margin-top: 44px;
}
.tier {
  position: relative;
  border-radius: var(--r-md);
  border: 1px solid var(--hair);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.012));
  padding: 20px 16px 18px;
  text-align: center;
  transition: transform 0.45s var(--ease), border-color 0.4s, box-shadow 0.45s;
  cursor: default;
}
.tier:hover { transform: translateY(-8px); border-color: var(--hair-strong); }
.tier .orb {
  width: 42px; height: 42px;
  margin: 0 auto 14px;
  border-radius: 50%;
  display: grid; place-items: center;
  font-size: 15px; font-weight: 600;
  color: #06090f;
  box-shadow: inset 0 -6px 14px rgba(0, 0, 0, 0.35), 0 10px 24px -10px currentColor;
}
.tier .tname { font-size: 14.5px; font-weight: 500; }
.tier .tmeta { margin-top: 5px; font-size: 11.5px; color: var(--t3); font-family: var(--mono); }
.tier .tbar {
  margin-top: 14px; height: 3px; border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
}
.tier .tbar i { display: block; height: 100%; border-radius: 999px; background: var(--grad-brand); }
.tier.bronze .orb { background: linear-gradient(150deg, #e0a273, #a86a3c); }
.tier.silver .orb { background: linear-gradient(150deg, #e6ecf6, #a9b6c9); }
.tier.gold .orb { background: linear-gradient(150deg, #ffd54f, #e0a000); }
.tier.platinum .orb { background: linear-gradient(150deg, #b6ffe0, #4fd1c5); }
.tier.diamond .orb { background: linear-gradient(150deg, #a9d8ff, #4a7bff); }
.tier.star .orb { background: linear-gradient(150deg, #d3b6ff, #7c5cff); }
.tier.king .orb { background: linear-gradient(150deg, #ffd54f, #ff8a00); color: #2b1400; }

/* 倍率表 */
.table-shell {
  margin-top: 44px;
  border: 1px solid var(--hair);
  border-radius: var(--r-lg);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  background: rgba(7, 11, 20, 0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}
table { width: 100%; border-collapse: collapse; }
th, td { padding: 16px 22px; text-align: left; font-size: 14.5px; }
thead th {
  font-size: 12.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--t3);
  font-weight: 500;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--hair);
}
tbody tr + tr td { border-top: 1px solid rgba(255, 255, 255, 0.05); }
tbody tr:hover td { background: rgba(255, 255, 255, 0.022); }
td .mult-up { color: var(--cyan); font-family: var(--mono); font-weight: 500; }
td .mult-down { color: #ff9db0; font-family: var(--mono); font-weight: 500; }
td .mult-eq { color: var(--gold-soft); font-family: var(--mono); font-weight: 500; }

/* ------------------------------------------------------- 11. 定价卡片 */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 52px; align-items: start; }
.plan {
  position: relative;
  padding: 34px 30px 32px;
  border-radius: var(--r-xl);
  border: 1px solid var(--hair);
  background: linear-gradient(170deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.015));
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  transition: transform 0.5s var(--ease), border-color 0.4s, box-shadow 0.5s;
}
.plan:hover { transform: translateY(-6px); }
.plan.featured {
  border-color: rgba(0, 229, 255, 0.34);
  background: linear-gradient(170deg, rgba(47, 107, 255, 0.18), rgba(0, 229, 255, 0.05));
  box-shadow: 0 40px 90px -40px rgba(47, 107, 255, 0.85), inset 0 1px 0 rgba(255, 255, 255, 0.12);
}
.plan-badge {
  position: absolute; top: -13px; left: 30px;
  padding: 5px 14px;
  border-radius: var(--r-pill);
  background: var(--grad-brand);
  font-size: 12px;
  letter-spacing: 0.06em;
  box-shadow: 0 10px 26px -12px rgba(47, 107, 255, 1);
}
.plan-name { font-size: 20px; font-weight: 600; }
.plan-sub { margin-top: 6px; font-size: 13.5px; color: var(--t3); }
.plan-price { margin-top: 24px; display: flex; align-items: baseline; gap: 8px; }
.plan-price .num { font-size: 34px; font-weight: 600; letter-spacing: -0.04em; }
.plan-price .unit { font-size: 13.5px; color: var(--t3); }
.plan-quota {
  margin-top: 20px; padding: 14px 16px;
  border-radius: var(--r-sm);
  border: 1px solid var(--hair);
  background: rgba(255, 255, 255, 0.035);
  font-size: 13.5px; color: var(--t2);
  display: grid; gap: 7px;
}
.plan-quota span { display: flex; justify-content: space-between; }
.plan-quota b { color: var(--t1); font-weight: 500; }
.plan ul { margin-top: 24px; display: grid; gap: 12px; }
.plan li { display: flex; gap: 10px; font-size: 14.4px; color: var(--t2); }
.plan li svg { flex-shrink: 0; margin-top: 4px; color: var(--cyan); }
.plan .btn { margin-top: 28px; }

/* --------------------------------------------------------- 12. FAQ 折叠 */
.faq { margin-top: 44px; display: grid; gap: 12px; max-width: 900px; margin-left: auto; margin-right: auto; }
.q {
  border: 1px solid var(--hair);
  border-radius: var(--r-md);
  background: var(--glass);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  overflow: hidden;
  transition: border-color 0.4s, background 0.4s;
}
.q.open { border-color: var(--hair-strong); background: var(--glass-2); }
.q-head {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 20px 24px;
  background: transparent; border: 0; cursor: pointer;
  font-size: 16px; font-weight: 500; text-align: left;
}
.q-head .pm { flex-shrink: 0; color: var(--t3); transition: transform 0.4s var(--ease), color 0.3s; }
.q.open .q-head .pm { transform: rotate(45deg); color: var(--cyan); }
.q-body { max-height: 0; overflow: hidden; transition: max-height 0.5s var(--ease); }
.q-body p { padding: 0 24px 22px; color: var(--t2); font-size: 14.8px; }

/* ------------------------------------------------------- 13. CTA / 页脚 */
.cta-band {
  position: relative;
  border-radius: var(--r-xl);
  border: 1px solid var(--hair);
  overflow: hidden;
  padding: 72px 56px;
  background:
    radial-gradient(700px 340px at 12% 0%, rgba(47, 107, 255, 0.4), transparent 66%),
    radial-gradient(600px 320px at 92% 100%, rgba(0, 229, 255, 0.24), transparent 66%),
    linear-gradient(160deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.015));
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: var(--sh-lg);
}
.cta-band h2 { font-size: clamp(28px, 3.2vw, 44px); letter-spacing: -0.034em; }
.cta-band .lead { max-width: 56ch; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

.footer {
  margin-top: 120px;
  border-top: 1px solid var(--hair);
  padding: 64px 0 40px;
  background: rgba(4, 6, 12, 0.6);
}
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 44px; }
.footer h4 { font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--t3); font-weight: 500; }
.footer-links { margin-top: 18px; display: grid; gap: 11px; }
.footer-links a { font-size: 14.4px; color: var(--t2); transition: color 0.25s; }
.footer-links a:hover { color: var(--t1); }
.footer-note { margin-top: 16px; font-size: 13.6px; color: var(--t3); max-width: 34ch; line-height: 1.75; }
.footer-bottom {
  margin-top: 52px; padding-top: 24px;
  border-top: 1px solid var(--hair);
  display: flex; flex-wrap: wrap; gap: 14px; justify-content: space-between;
  font-size: 13px; color: var(--t3);
}

/* --------------------------------------------------------- 14. 动画工具 */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 0.08s; }
.reveal.d2 { transition-delay: 0.16s; }
.reveal.d3 { transition-delay: 0.24s; }
.reveal.d4 { transition-delay: 0.32s; }
.reveal.d5 { transition-delay: 0.4s; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
@keyframes pulseRing {
  0% { box-shadow: 0 0 0 0 rgba(0, 229, 255, 0.4); }
  70% { box-shadow: 0 0 0 16px rgba(0, 229, 255, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 229, 255, 0); }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* --------------------------------------------------------- 15. 页面局部 */
.page-hero { padding: 158px 0 24px; }
.crumb { font-size: 13.5px; color: var(--t3); display: flex; gap: 8px; align-items: center; }
.crumb a:hover { color: var(--t1); }
.matrix-group { margin-top: 56px; }
.matrix-group > h3 {
  font-size: 22px; letter-spacing: -0.02em;
  display: flex; align-items: center; gap: 12px;
}
.matrix-group > h3 .idx {
  font-family: var(--mono); font-size: 12px; color: var(--cyan);
  border: 1px solid rgba(0, 229, 255, 0.3); border-radius: 8px;
  padding: 3px 8px; background: rgba(0, 229, 255, 0.08);
}
.matrix { margin-top: 22px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--hair); border: 1px solid var(--hair); border-radius: var(--r-lg); overflow: hidden; }
.matrix div { background: rgba(8, 12, 22, 0.72); padding: 22px 24px; }
.matrix dt { font-size: 15.5px; font-weight: 500; }
.matrix dd { margin: 8px 0 0; font-size: 14px; color: var(--t2); line-height: 1.68; }

.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
.stat-card { padding: 26px; border-radius: var(--r-lg); border: 1px solid var(--hair); background: var(--glass); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); }
.stat-card .n { font-size: 30px; font-weight: 600; letter-spacing: -0.035em; font-variant-numeric: tabular-nums; }
.stat-card .l { margin-top: 6px; font-size: 13.5px; color: var(--t3); }

.form { display: grid; gap: 18px; margin-top: 34px; }
.field { display: grid; gap: 8px; }
.field label { font-size: 13.5px; color: var(--t2); }
.field input, .field select, .field textarea {
  width: 100%;
  padding: 14px 16px;
  border-radius: var(--r-sm);
  border: 1px solid var(--hair);
  background: rgba(255, 255, 255, 0.035);
  color: var(--t1);
  font: inherit;
  font-size: 15px;
  transition: border-color 0.3s, background 0.3s, box-shadow 0.3s;
  appearance: none;
}
.field textarea { min-height: 128px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: rgba(0, 229, 255, 0.5);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: 0 0 0 4px rgba(47, 107, 255, 0.16);
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-hint { font-size: 13px; color: var(--t3); }

.contact-card { display: grid; gap: 22px; margin-top: 34px; }
.contact-line { display: flex; gap: 14px; align-items: flex-start; }
.contact-line .ci {
  width: 40px; height: 40px; border-radius: 12px; flex-shrink: 0;
  display: grid; place-items: center;
  background: rgba(47, 107, 255, 0.16);
  border: 1px solid rgba(120, 190, 255, 0.24);
  color: #bfe4ff;
}
.contact-line .cv { font-size: 15.5px; }
.contact-line .cl { font-size: 12.5px; color: var(--t3); letter-spacing: 0.06em; }

.badge-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 15px; border-radius: var(--r-pill);
  border: 1px solid var(--hair); background: var(--glass);
  font-size: 13.2px; color: var(--t2);
}
.badge b { color: var(--t1); font-weight: 500; }

/* ----------------------------------------------------------- 16. 响应式 */
@media (max-width: 1080px) {
  .g-4 { grid-template-columns: repeat(2, 1fr); }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .ladder { grid-template-columns: repeat(4, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 34px; }
  .split, .split.reverse { grid-template-columns: 1fr; gap: 40px; }
  .split.reverse .split-media { order: 0; }
  .panel-grid, .panel-grid.reverse { grid-template-columns: 1fr; gap: 36px; }
  .panel-grid.reverse .panel-media { order: 0; }
  .plans { grid-template-columns: 1fr; max-width: 560px; margin-left: auto; margin-right: auto; }
  .matrix { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 880px) {
  .nav-links, .nav-cta .btn-ghost { display: none; }
  .nav-toggle { display: flex; }
  .nav-cta { margin-left: auto; }
  .nav.open .nav-links {
    display: flex; flex-direction: column; align-items: stretch;
    position: absolute; top: 70px; left: 12px; right: 12px;
    padding: 14px; gap: 6px;
    border-radius: var(--r-lg);
    border: 1px solid var(--hair);
    background: rgba(8, 12, 22, 0.94);
    backdrop-filter: blur(26px) saturate(180%);
    -webkit-backdrop-filter: blur(26px) saturate(180%);
    box-shadow: var(--sh-lg);
  }
  .nav.open .nav-links a { padding: 13px 16px; }
  .section { padding: 92px 0; }
  .hero { padding: 132px 0 72px; }
  .g-3, .g-2 { grid-template-columns: 1fr; }
  .g-4 { grid-template-columns: 1fr; }
  .ladder { grid-template-columns: repeat(2, 1fr); }
  .matrix { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
  .cta-band { padding: 48px 26px; }
  .chip-tl, .chip-br { display: none; }
  .float-chip { position: static; }
  .spec-list { grid-template-columns: 1fr; }
  th, td { padding: 13px 14px; font-size: 13.2px; }
  .table-shell { overflow-x: auto; }
  .footer-grid { grid-template-columns: 1fr; }
  .showcase-frame { padding: 6px; }
  .showcase-frame img { border-radius: 18px; }
}