/* ============ 基础变量 ============ */
:root {
  --bg: #080511;
  --bg-2: #0d0819;
  --ink: #ede9f8;
  --muted: #a49db9;
  --dim: #7d768f;
  --line: rgba(255, 255, 255, 0.09);
  --line-soft: rgba(255, 255, 255, 0.06);
  --card: rgba(255, 255, 255, 0.035);
  --violet: #a78bfa;
  --violet-deep: #7c3aed;
  --pink: #e879f9;
  --cyan: #4dd6e8;
  --gold: #f2b455;
  --radius: 20px;
  --max: 1160px;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
::selection { background: rgba(167, 139, 250, 0.32); }

.ic { width: 18px; height: 18px; display: block; flex: none; }

/* ============ 背景（全静态，零动画） ============ */
.bg {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(1100px 620px at 78% -8%, rgba(124, 58, 237, 0.30) 0%, transparent 62%),
    radial-gradient(900px 620px at 4% 22%, rgba(232, 121, 249, 0.14) 0%, transparent 60%),
    linear-gradient(170deg, #080511 0%, #0b0616 45%, #080511 100%);
}
.bg-grid {
  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(80% 55% at 50% 0%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(80% 55% at 50% 0%, #000 0%, transparent 78%);
}
.bg-glow {
  position: absolute; border-radius: 50%; filter: blur(90px); opacity: .45;
}
.bg-glow-a { width: 420px; height: 420px; background: #6d28d9; top: -140px; right: 6%; }
.bg-glow-b { width: 320px; height: 320px; background: #db2777; top: 46%; left: -120px; opacity: .22; }

/* ============ 导航 ============ */
.nav {
  position: sticky; top: 12px; z-index: 80;
  max-width: var(--max); margin: 12px auto 0;
  padding: 0 12px;
}
.nav-inner {
  display: flex; align-items: center; gap: 18px;
  height: 60px; padding: 0 12px 0 16px;
  border-radius: 999px;
  border: 1px solid var(--line-soft);
  background: rgba(14, 10, 24, 0.62);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  transition: background .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.nav.is-scrolled .nav-inner {
  background: rgba(11, 8, 19, 0.94);
  border-color: var(--line);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.5);
}
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .nav-inner { background: rgba(12, 8, 20, 0.96); }
}
.brand { display: flex; align-items: center; gap: 9px; flex: none; }
.brand-name {
  font-size: 18px; font-weight: 800; letter-spacing: .5px;
  background: linear-gradient(100deg, #fff, #d8b4fe);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.brand-tag {
  font-size: 11px; font-style: normal; color: var(--dim);
  padding-left: 9px; margin-left: 2px; border-left: 1px solid var(--line);
  letter-spacing: .6px;
}
.nav-links { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav-links a {
  font-size: 14px; color: var(--muted); padding: 7px 12px; border-radius: 999px;
  transition: color .18s ease, background .18s ease;
}
.nav-links a:hover { color: #fff; background: rgba(255, 255, 255, 0.06); }
.nav-actions { display: flex; align-items: center; gap: 8px; flex: none; }
.nav-qq {
  display: inline-flex; align-items: center; gap: 7px;
  height: 38px; padding: 0 16px; border-radius: 999px;
  font-size: 13.5px; font-weight: 600; color: #150a20;
  background: linear-gradient(120deg, #c4b5fd, #f0abfc);
  box-shadow: 0 6px 20px rgba(168, 85, 247, 0.32);
  transition: transform .18s ease, box-shadow .18s ease;
}
.nav-qq .ic { width: 16px; height: 16px; }
.nav-qq:hover { transform: translateY(-1px); box-shadow: 0 10px 26px rgba(168, 85, 247, 0.42); }
.nav-buy {
  display: inline-flex; align-items: center; justify-content: center;
  height: 38px; padding: 0 18px; border-radius: 999px;
  font-size: 13.5px; font-weight: 700; color: #fff; text-decoration: none;
  background: linear-gradient(120deg, #8b5cf6, #e879f9);
  box-shadow: 0 6px 20px rgba(168, 85, 247, 0.42);
  transition: transform .18s ease, box-shadow .18s ease;
}
.nav-buy:hover { transform: translateY(-1px); box-shadow: 0 10px 26px rgba(168, 85, 247, 0.55); }
.nav-burger { display: none; width: 38px; height: 38px; border-radius: 12px; }
.nav-burger span {
  display: block; width: 17px; height: 2px; margin: 3.5px auto;
  background: #dcd6ee; border-radius: 2px; transition: transform .2s ease, opacity .2s ease;
}

/* ============ 通用按钮/区块 ============ */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  height: 48px; padding: 0 22px; border-radius: 14px;
  font-size: 14.5px; font-weight: 600; white-space: nowrap;
  transition: transform .18s ease, background .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.btn .ic { width: 17px; height: 17px; }
.btn-primary {
  color: #170b24;
  background: linear-gradient(120deg, #c4b5fd, #e9a6ff 55%, #f9c7ff);
  box-shadow: 0 10px 30px rgba(168, 85, 247, 0.30);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 38px rgba(168, 85, 247, 0.44); }
.btn-ghost {
  color: var(--ink); border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.045);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.09); border-color: rgba(255,255,255,.2); transform: translateY(-2px); }
.btn.big { height: 54px; padding: 0 28px; font-size: 15.5px; border-radius: 16px; }

.section { max-width: var(--max); margin: 0 auto; padding: 92px 24px 0; scroll-margin-top: 88px; }
.section-head { max-width: 660px; margin-bottom: 40px; }
.kicker {
  font-size: 11.5px; letter-spacing: 2.4px; font-weight: 700;
  color: #b79bf5; margin-bottom: 12px;
}
.section h2, .cta h2 {
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.25; font-weight: 800; letter-spacing: -.4px;
}
.accent {
  background: linear-gradient(100deg, #c4b5fd, #f0abfc 70%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.section-desc { margin-top: 14px; color: var(--muted); font-size: 15px; }

/* ============ Hero ============ */
.hero {
  max-width: var(--max); margin: 0 auto;
  padding: 74px 24px 84px;
  display: grid; grid-template-columns: 1.06fr .94fr;
  gap: 56px; align-items: center;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 12.5px; color: #cdc4e6; letter-spacing: .4px;
  padding: 7px 14px; border-radius: 999px;
  border: 1px solid var(--line); background: rgba(255,255,255,.04);
}
.eyebrow .dot {
  width: 6px; height: 6px; border-radius: 50%; background: #a3f7c9;
  box-shadow: 0 0 0 4px rgba(163, 247, 201, .13);
}
.hero h1 { margin: 22px 0 0; font-weight: 900; letter-spacing: -1.6px; line-height: 1.04; }
.h1-brand {
  display: block;
  font-size: clamp(52px, 7.6vw, 88px);
  background: linear-gradient(104deg, #ffffff 8%, #d8b4fe 52%, #f5b8ff 92%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.h1-line {
  display: block; margin-top: 6px;
  font-size: clamp(24px, 3.4vw, 38px); font-weight: 800; letter-spacing: 1px;
  color: #d9d2ee;
}
.hero-sub { margin-top: 22px; font-size: 15.5px; color: var(--muted); max-width: 520px; }
.hero-pills { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 24px; }
.hero-pills li {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 13px; color: #e2d9f7;
  padding: 8px 14px; border-radius: 12px;
  border: 1px solid rgba(167, 139, 250, .26);
  background: linear-gradient(180deg, rgba(167,139,250,.14), rgba(167,139,250,.05));
}
.hero-pills .ic { width: 15px; height: 15px; color: #d8b4fe; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.hero-stats {
  display: flex; flex-wrap: wrap; gap: 34px;
  margin-top: 42px; padding-top: 26px; border-top: 1px solid var(--line-soft);
}
.hero-stats dt {
  font-size: 24px; font-weight: 800; letter-spacing: -.5px;
  background: linear-gradient(100deg, #fff, #cbb6f7);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-stats dd { font-size: 12.5px; color: var(--dim); margin-top: 2px; }

/* Hero 控制台 */
.hero-panel {
  position: relative; border-radius: 24px; overflow: hidden;
  border: 1px solid rgba(255,255,255,.1);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(168, 85, 247, .34), transparent 58%),
    linear-gradient(165deg, #201531 0%, #150e23 46%, #0f0a1a 100%);
  box-shadow: 0 30px 70px rgba(0, 0, 0, .58), inset 0 1px 0 rgba(255,255,255,.07);
}
.hero-panel::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(180deg, rgba(255,255,255,.05), transparent 32%);
}
.hp-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 15px 18px; border-bottom: 1px solid rgba(255,255,255,.07);
  position: relative; z-index: 1;
}
.hp-brand { display: flex; align-items: center; gap: 9px; font-size: 14px; font-weight: 700; letter-spacing: .2px; }
.hp-live {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 11.5px; color: #b9f5cf;
  padding: 5px 11px; border-radius: 999px;
  background: rgba(52, 211, 153, .12);
  border: 1px solid rgba(52, 211, 153, .22);
}
.hp-live i { width: 6px; height: 6px; border-radius: 50%; background: #34d399; }
.hp-body { padding: 6px 10px; position: relative; z-index: 1; }
.hp-row {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 13px 10px; border-radius: 12px;
}
.hp-row + .hp-row { border-top: 1px solid rgba(255,255,255,.05); }
.hp-row b { font-size: 14px; font-weight: 700; color: #f2ecff; }
.hp-row p { font-size: 12.5px; color: #9c92b5; margin-top: 2px; }

.switch {
  position: relative; flex: none; width: 44px; height: 25px; border-radius: 999px;
  background: rgba(255, 255, 255, .13);
  border: 1px solid rgba(255,255,255,.08);
  transition: background .2s ease;
}
.switch i {
  position: absolute; top: 3px; left: 3px; width: 17px; height: 17px;
  border-radius: 50%; background: #ded8ee;
  transition: transform .2s ease, background .2s ease;
}
.switch.on { background: linear-gradient(120deg, #8b5cf6, #d946ef); border-color: transparent; }
.switch.on i { transform: translateX(19px); background: #fff; }

.hp-foot {
  display: flex; align-items: center; gap: 14px;
  padding: 15px 18px; border-top: 1px solid rgba(255,255,255,.07);
  position: relative; z-index: 1;
}
.hp-metric span { font-size: 11px; color: #8f86a8; display: block; letter-spacing: .5px; }
.hp-metric b { font-size: 16px; font-weight: 800; letter-spacing: -.2px; }
.hp-metric b small { font-size: 10.5px; font-weight: 600; color: #8f86a8; margin-left: 2px; }
.hp-metric.right { margin-left: auto; text-align: right; }
.hp-bars { display: flex; align-items: flex-end; gap: 3px; height: 26px; flex: 1; }
.hp-bars i {
  flex: 1; height: var(--h); border-radius: 2px;
  background: linear-gradient(180deg, #e9a6ff, rgba(167,139,250,.35));
}

/* ============ 四大亮点 ============ */
.pillars {
  max-width: var(--max); margin: 0 auto; padding: 0 24px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.pillar {
  padding: 24px 20px; border-radius: var(--radius);
  border: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.015));
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}
.pillar:hover { transform: translateY(-4px); border-color: rgba(167,139,250,.3); }
.pillar-ico {
  display: grid; place-items: center; width: 42px; height: 42px;
  border-radius: 13px; margin-bottom: 16px;
}
.pillar-ico .ic { width: 21px; height: 21px; }
.c-violet { color: #c4b5fd; background: rgba(139, 92, 246, .16); box-shadow: inset 0 0 0 1px rgba(167,139,250,.22); }
.c-pink   { color: #f5b8ff; background: rgba(217, 70, 239, .14); box-shadow: inset 0 0 0 1px rgba(232,121,249,.2); }
.c-cyan   { color: #9beef7; background: rgba(34, 211, 238, .12); box-shadow: inset 0 0 0 1px rgba(77,214,232,.2); }
.c-gold   { color: #fbd38d; background: rgba(242, 180, 85, .13); box-shadow: inset 0 0 0 1px rgba(242,180,85,.2); }
.pillar h3 { font-size: 16.5px; font-weight: 700; letter-spacing: .2px; }
.pillar p { margin-top: 8px; font-size: 13px; color: var(--muted); line-height: 1.65; }

/* ============ 功能图鉴 ============ */
.atlas { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.atlas-card {
  position: relative; border-radius: var(--radius); overflow: hidden;
  padding: 20px;
  border: 1px solid hsl(var(--tone) / .30);
  background:
    radial-gradient(120% 90% at 100% 0%, hsl(var(--tone) / .18), transparent 62%),
    linear-gradient(170deg, rgba(255,255,255,.045), rgba(255,255,255,.012));
  transition: border-color .2s ease, transform .2s ease;
}
.atlas-card:hover { transform: translateY(-3px); border-color: hsl(var(--tone) / .55); }
.atlas-card header {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  padding-bottom: 14px; margin-bottom: 14px;
  border-bottom: 1px dashed hsl(var(--tone) / .28);
}
.atlas-ico {
  display: grid; place-items: center; width: 32px; height: 32px; border-radius: 10px;
  color: hsl(var(--tone)); background: hsl(var(--tone) / .16);
}
.atlas-ico .ic { width: 18px; height: 18px; }
.atlas-card h3 { font-size: 16px; font-weight: 700; }
.atlas-card header small {
  margin-left: auto; font-size: 11.5px;
  color: #9c93b2; letter-spacing: .3px;
}
.chips { display: flex; flex-wrap: wrap; gap: 7px; }
.chips li {
  font-size: 12.5px; color: #ddd5ee;
  padding: 6px 11px; border-radius: 9px;
  border: 1px solid rgba(255,255,255,.075);
  background: rgba(255,255,255,.045);
  transition: background .16s ease, border-color .16s ease, color .16s ease;
  cursor: default;
}
.chips li:hover {
  color: #fff; border-color: hsl(var(--tone) / .6);
  background: hsl(var(--tone) / .18);
}

/* ============ 套餐 ============ */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; align-items: start; }
.plan {
  position: relative; padding: 24px 22px; border-radius: 22px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.015));
  transition: transform .2s ease, border-color .2s ease;
}
.plan:hover { transform: translateY(-4px); border-color: rgba(167,139,250,.32); }
.plan.featured {
  border-color: rgba(232,121,249,.42);
  background:
    radial-gradient(120% 80% at 50% 0%, rgba(217,70,239,.22), transparent 62%),
    linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  box-shadow: 0 24px 60px rgba(126, 34, 206, .26);
}
.plan-badge {
  position: absolute; top: -11px; left: 22px;
  font-size: 11px; font-weight: 700; letter-spacing: .5px; color: #1a0a24;
  padding: 4px 11px; border-radius: 999px;
  background: linear-gradient(120deg, #f0abfc, #fbcfe8);
}
.plan-head h3 { font-size: 20px; font-weight: 800; letter-spacing: .3px; }
.plan-head p { font-size: 12.5px; color: var(--dim); margin-top: 3px; }
.plan-list { margin: 18px 0 0; display: grid; gap: 10px; }
.plan-list li {
  display: flex; align-items: flex-start; gap: 9px;
  font-size: 13.5px; color: #cfc7e2; line-height: 1.5;
}
.plan-list .ic { width: 15px; height: 15px; margin-top: 3px; }
.plan-list .ic.ok { color: #8fe3b4; }
.plan-list .ic.bad { color: #f28f9c; }
.plan-list .ic.star { color: #f7c66b; }
.plan-list li.no { color: #b6a0a8; }
.plan-list li.hl {
  margin-top: 2px; padding: 9px 11px; border-radius: 10px;
  color: #f4ebff;
  background: rgba(167, 139, 250, .13);
  border: 1px solid rgba(167, 139, 250, .22);
}
.plan-note {
  margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--line-soft);
  font-size: 12.5px; color: var(--dim);
}
.plan-cta {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; margin-top: 18px; padding: 11px 16px; border-radius: 12px;
  font-size: 14px; font-weight: 600; text-decoration: none; cursor: pointer;
  color: #fff; background: linear-gradient(120deg, #8b5cf6, #e879f9);
  box-shadow: 0 8px 22px rgba(168, 85, 247, .35);
  transition: transform .15s ease, box-shadow .15s ease;
}
.plan-cta:hover { transform: translateY(-1px); box-shadow: 0 12px 26px rgba(168, 85, 247, .45); }
.plan-cta .ic { width: 16px; height: 16px; }

/* ============ 界面预览 ============ */
.ui-wrap { display: grid; grid-template-columns: 1.5fr .8fr; gap: 26px; align-items: start; }
.ui-window {
  border-radius: 22px; overflow: hidden;
  border: 1px solid rgba(255,255,255,.1);
  background: linear-gradient(165deg, #1b1229 0%, #140d21 55%, #100a1b 100%);
  box-shadow: 0 28px 64px rgba(0,0,0,.55);
}
.ui-bar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 16px;
  background: rgba(255,255,255,.035);
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.ui-bar-left { display: flex; align-items: center; gap: 12px; min-width: 0; }
.ui-burger { display: grid; gap: 3px; }
.ui-burger i { width: 15px; height: 1.5px; background: #bcb3d2; border-radius: 2px; }
.ui-user {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 12.5px; color: #ded7ee;
  padding: 4px 10px 4px 5px; border-radius: 999px;
  background: rgba(255,255,255,.06);
}
.ui-title { font-size: 12.5px; color: #bfb6d6; }
.ui-winbtns { display: flex; gap: 8px; }
.ui-winbtns i { width: 12px; height: 1.5px; background: #9d94b5; border-radius: 2px; }
.ui-body { display: grid; grid-template-columns: 190px 1fr; min-height: 396px; }
.ui-side {
  padding: 14px 12px; border-right: 1px solid rgba(255,255,255,.06);
  background: rgba(255,255,255,.018);
  display: flex; flex-direction: column; gap: 14px;
}
.ui-tabs { display: grid; gap: 3px; }
.ui-tabs li {
  display: flex; align-items: center; gap: 9px;
  padding: 9px 11px; border-radius: 10px;
  font-size: 12.5px; color: #b6adcb; cursor: pointer;
  transition: background .16s ease, color .16s ease;
  user-select: none;
}
.ui-tabs li .ic { width: 15px; height: 15px; opacity: .85; }
.ui-tabs li:hover { background: rgba(255,255,255,.05); color: #ede7fb; }
.ui-tabs li.active {
  color: #fff; background: linear-gradient(100deg, rgba(139,92,246,.34), rgba(217,70,239,.16));
  box-shadow: inset 0 0 0 1px rgba(167,139,250,.3);
}
.ui-side-brand {
  margin-top: auto; padding: 12px; border-radius: 12px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.06);
  display: grid; gap: 6px; justify-items: start;
}
.ui-side-brand span { font-size: 12px; color: #cdc4e2; }
.ui-side-brand img { opacity: .9; }
.ui-side-brand small { font-size: 9.5px; color: #847b9c; line-height: 1.4; }
.ui-main { padding: 8px; display: grid; gap: 4px; align-content: start; }
.ui-row {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  padding: 13px 14px; border-radius: 12px;
  background: rgba(255,255,255,.025);
  border: 1px solid transparent;
  transition: background .18s ease, border-color .18s ease;
}
.ui-row:hover { background: rgba(255,255,255,.055); border-color: rgba(167,139,250,.22); }
.ui-row b { font-size: 14px; font-weight: 700; color: #f3eefd; display: block; }
.ui-row p { font-size: 12px; color: #9b92b1; margin-top: 2px; }
.ui-row .switch { width: 40px; height: 23px; cursor: pointer; }
.ui-row .switch i { width: 15px; height: 15px; }
.ui-row .switch.on i { transform: translateX(17px); }

.ui-points { display: grid; gap: 14px; }
.ui-points li {
  padding: 16px 18px; border-radius: 16px;
  border: 1px solid var(--line-soft);
  background: rgba(255,255,255,.03);
}
.ui-points b { font-size: 14px; }
.ui-points p { font-size: 12.5px; color: var(--muted); margin-top: 5px; }

/* ============ FAQ ============ */
.faq { display: grid; gap: 10px; max-width: 900px; }
.faq details {
  border-radius: 14px; border: 1px solid var(--line-soft);
  background: rgba(255,255,255,.028);
  padding: 4px 18px;
  transition: border-color .2s ease, background .2s ease;
}
.faq details[open] { border-color: rgba(167,139,250,.28); background: rgba(167,139,250,.07); }
.faq summary {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px 0; font-size: 14.5px; font-weight: 600; cursor: pointer;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary .ic { width: 16px; height: 16px; color: #a992d8; transition: transform .22s ease; }
.faq details[open] summary .ic { transform: rotate(180deg); }
.faq details p { padding: 0 0 16px; font-size: 13.5px; color: var(--muted); max-width: 780px; }
.faq details b { color: #ddd2f2; }

/* ============ CTA ============ */
.cta {
  position: relative; overflow: hidden;
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 34px; align-items: center;
  padding: 44px 40px; border-radius: 28px;
  border: 1px solid rgba(232,121,249,.26);
  background:
    radial-gradient(110% 130% at 88% 6%, rgba(232,121,249,.28), transparent 58%),
    radial-gradient(100% 120% at 0% 100%, rgba(124,58,237,.28), transparent 60%),
    linear-gradient(160deg, #191026, #110b1c);
  box-shadow: 0 28px 70px rgba(0,0,0,.5);
}
.cta-copy p { color: var(--muted); font-size: 14px; margin-top: 12px; max-width: 420px; }
.cta-actions { display: grid; gap: 12px; justify-items: stretch; }
.qq-box {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  padding: 14px 16px; border-radius: 16px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.28);
}
.qq-box span { font-size: 11.5px; color: var(--dim); display: block; letter-spacing: .5px; }
.qq-box b {
  font-size: 22px; font-weight: 800; letter-spacing: 1.5px;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(100deg, #fff, #f0abfc);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.copy-btn {
  display: inline-flex; align-items: center; gap: 6px;
  height: 36px; padding: 0 14px; border-radius: 10px;
  font-size: 12.5px; font-weight: 600; color: #e9e2f7;
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.07);
  transition: background .18s ease, border-color .18s ease;
}
.copy-btn:hover { background: rgba(255,255,255,.14); border-color: rgba(255,255,255,.3); }
.copy-btn .ic { width: 14px; height: 14px; }
.cta-actions .btn { justify-content: center; }
.cta-url { font-size: 11.5px; color: var(--dim); text-align: center; letter-spacing: .3px; }

/* ============ Footer ============ */
.foot { margin-top: 90px; border-top: 1px solid var(--line-soft); background: rgba(0,0,0,.22); }
.foot-inner {
  max-width: var(--max); margin: 0 auto; padding: 34px 24px 40px;
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px 26px;
}
.foot-brand { display: flex; align-items: center; gap: 9px; font-size: 13.5px; font-weight: 700; }
.foot-note { font-size: 12px; color: var(--dim); flex: 1; min-width: 260px; }
.foot-meta { font-size: 12px; color: var(--dim); }

/* ============ Toast ============ */
.toast {
  position: fixed; left: 50%; bottom: 32px; z-index: 200;
  transform: translate(-50%, 16px);
  padding: 12px 20px; border-radius: 12px;
  font-size: 13px; color: #150a20; font-weight: 600;
  background: linear-gradient(120deg, #c4b5fd, #f0abfc);
  box-shadow: 0 16px 40px rgba(126, 34, 206, .45);
  opacity: 0; pointer-events: none;
  transition: opacity .22s ease, transform .22s ease;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ============ 背景音乐悬浮窗 ============ */
.music {
  position: fixed; z-index: 120;
  left: 22px; bottom: 22px;
  display: flex; align-items: center; gap: 12px;
  max-width: min(340px, calc(100vw - 44px));
  padding: 9px 15px 9px 9px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(16, 11, 26, .82);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  box-shadow: 0 16px 42px rgba(0, 0, 0, .5);
  user-select: none; touch-action: none;
  cursor: grab;
}
.music:active { cursor: grabbing; }
.music-btn {
  flex: none; width: 42px; height: 42px; border-radius: 50%;
  display: grid; place-items: center;
  background: linear-gradient(120deg, #8b5cf6, #e879f9);
  box-shadow: 0 6px 18px rgba(168, 85, 247, .42);
}
.music.playing .music-btn { animation: mpl 1.7s ease-in-out infinite; }
@keyframes mpl { 0%,100% { transform: scale(1); } 50% { transform: scale(1.06); } }
.ico-play {
  display: block; width: 0; height: 0; margin-left: 3px;
  border-left: 11px solid #fff;
  border-top: 7px solid transparent;
  border-bottom: 7px solid transparent;
}
.music.playing .ico-play {
  position: relative; width: 12px; height: 12px; margin: 0; border: 0;
}
.music.playing .ico-play::before,
.music.playing .ico-play::after {
  content: ""; position: absolute; top: 0; width: 4px; height: 12px;
  background: #fff; border-radius: 1px;
}
.music.playing .ico-play::before { left: 0; }
.music.playing .ico-play::after { right: 0; }
.music-body { display: flex; flex-direction: column; gap: 6px; min-width: 0; flex: 1; }
.music-meta { display: flex; align-items: center; justify-content: space-between; gap: 10px; font-size: 11.5px; color: #cfc6e4; }
.music-title { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.music-time { font-variant-numeric: tabular-nums; color: #9b92b1; white-space: nowrap; }
.music-time b { color: #fff; }
.music-prog {
  position: relative; height: 14px; display: flex; align-items: center;
  cursor: pointer; touch-action: none;
}
.music-prog::before {
  content: ""; position: absolute; left: 0; right: 0; height: 5px;
  border-radius: 999px; background: rgba(255, 255, 255, .14);
}
.music-prog-fill {
  position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  height: 5px; width: 0%; border-radius: 999px;
  background: linear-gradient(90deg, #a78bfa, #f0abfc);
}
.music-prog-fill i {
  position: absolute; right: -6px; top: 50%; transform: translateY(-50%);
  width: 12px; height: 12px; border-radius: 50%; background: #fff;
  box-shadow: 0 0 0 4px rgba(168, 85, 247, .25);
  opacity: 0; transition: opacity .15s ease;
}
.music-prog:hover .music-prog-fill i,
.music-prog.scrub .music-prog-fill i { opacity: 1; }
.music-dragtip {
  position: absolute; top: -20px; right: 0;
  font-size: 10px; color: var(--dim); opacity: 0;
  transition: opacity .2s ease; pointer-events: none;
}
.music:hover .music-dragtip { opacity: .7; }
.music-lyric {
  flex: 1 1 auto; min-width: 0;
  display: flex; flex-direction: column; gap: 1px; line-height: 1.25;
}
.ly-zh { font-size: 11.5px; color: #e9e2fa; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; transition: opacity .18s ease; }
.ly-en { font-size: 10px; color: #a99fc4; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; letter-spacing: .2px; transition: opacity .18s ease; }
.music-lyric.flip .ly-zh, .music-lyric.flip .ly-en { opacity: .25; }
.music-hint {
  position: absolute; top: -20px; left: 0;
  font-size: 10px; color: #f0abfc; opacity: 0;
  transition: opacity .2s ease; pointer-events: none;
}
.music.muted .music-hint { opacity: .9; }
@media (max-width: 560px) {
  .music { left: 14px; bottom: 14px; padding: 8px 13px 8px 8px; }
  .music-dragtip { display: none; }
}

/* ============ 入站免责声明 / 作者介绍 ============ */
.gate {
  position: fixed; inset: 0; z-index: 1000;
  display: flex; align-items: center; justify-content: center; padding: 20px;
  background: rgba(8, 5, 14, .86);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  transition: opacity .35s ease, visibility .35s ease;
}
.gate.hide { opacity: 0; visibility: hidden; }
.gate-card {
  width: min(460px, 100%); max-height: 86vh; overflow: auto;
  background: linear-gradient(180deg, rgba(28, 19, 44, .96), rgba(16, 11, 26, .96));
  border: 1px solid rgba(167, 139, 250, .28); border-radius: 20px;
  padding: 26px 26px 24px; box-shadow: 0 30px 80px rgba(0, 0, 0, .6);
}
.gate-card h2 {
  font-size: 20px; text-align: center; margin-bottom: 14px;
  background: linear-gradient(120deg, #c4b5fd, #f0abfc);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.gate-body { font-size: 13px; line-height: 1.7; color: #cfc6e4; }
.gate-body p { margin: 0 0 10px; }
.gate-check {
  display: flex; align-items: flex-start; gap: 10px; margin: 16px 0 14px;
  font-size: 13.5px; color: #e9e2fa; cursor: pointer;
}
.gate-check input { margin-top: 2px; width: 16px; height: 16px; flex: none; accent-color: #a78bfa; }
.gate-enter {
  width: 100%; height: 48px; border: none; border-radius: 14px;
  font-size: 15px; font-weight: 700; color: #170b24;
  background: linear-gradient(120deg, #8b5cf6, #e879f9); cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, opacity .15s ease;
}
.gate-enter:disabled { opacity: .5; cursor: not-allowed; filter: grayscale(.3); }
.gate-enter:not(:disabled):hover { transform: translateY(-1px); box-shadow: 0 12px 26px rgba(168, 85, 247, .45); }
.modal {
  position: fixed; inset: 0; z-index: 1100; display: none;
  align-items: center; justify-content: center; padding: 20px;
  background: rgba(8, 5, 14, .8);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.modal.open { display: flex; }
.modal-card {
  width: min(380px, 100%);
  background: linear-gradient(180deg, rgba(28, 19, 44, .97), rgba(16, 11, 26, .97));
  border: 1px solid rgba(167, 139, 250, .28); border-radius: 20px;
  padding: 26px; box-shadow: 0 30px 80px rgba(0, 0, 0, .6);
}
.modal-card h3 {
  font-size: 19px; text-align: center; margin-bottom: 18px;
  background: linear-gradient(120deg, #c4b5fd, #f0abfc);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.intro-list { list-style: none; margin: 0 0 20px; display: flex; flex-direction: column; gap: 14px; }
.intro-list li { display: flex; align-items: center; gap: 12px; font-size: 14px; color: #e9e2fa; }
.intro-list span { color: #a99fc4; min-width: 48px; }
.intro-list b { font-weight: 700; color: #fff; }
.intro-list .qq { margin-left: auto; min-width: auto; color: #c4b5fd; font-variant-numeric: tabular-nums; }
@media (max-width: 560px) {
  .gate-card { padding: 22px 18px 20px; }
}

/* ============ 入场动画（仅 transform/opacity） ============ */
.rv { opacity: 0; transform: translateY(16px); }
.rv.in {
  opacity: 1; transform: none;
  transition: opacity .55s ease, transform .55s cubic-bezier(.22,.7,.3,1);
}

/* ============ 响应式 ============ */
@media (max-width: 1040px) {
  .hero { grid-template-columns: 1fr; gap: 40px; padding-top: 56px; }
  .hero-panel { max-width: 520px; }
  .pillars { grid-template-columns: 1fr 1fr; }
  .ui-wrap { grid-template-columns: 1fr; }
  .ui-points { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 880px) {
  .nav-links {
    position: absolute; top: 68px; left: 12px; right: 12px;
    flex-direction: column; align-items: stretch; gap: 2px;
    padding: 10px; border-radius: 18px;
    border: 1px solid var(--line);
    background: rgba(12, 8, 20, .97);
    box-shadow: 0 24px 50px rgba(0,0,0,.55);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 11px 14px; border-radius: 10px; font-size: 14.5px; }
  .nav-burger { display: block; }
  .brand-tag { display: none; }
  .atlas { grid-template-columns: 1fr; }
  .plans { grid-template-columns: 1fr; }
  .plan.featured { order: -1; }
  .cta { grid-template-columns: 1fr; padding: 32px 24px; }
  .section { padding-top: 72px; }
}
@media (max-width: 720px) {
  .ui-points { grid-template-columns: 1fr; }
  .ui-body { grid-template-columns: 1fr; min-height: 0; }
  .ui-side { flex-direction: row; overflow-x: auto; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.06); }
  .ui-tabs { grid-auto-flow: column; grid-auto-columns: max-content; }
  .ui-side-brand { display: none; }
  .hp-bars { display: none; }
  .hero-stats { gap: 22px 30px; }
}
@media (max-width: 560px) {
  .hero { padding: 44px 18px 64px; }
  .pillars, .section { padding-left: 18px; padding-right: 18px; }
  .pillars { grid-template-columns: 1fr; }
  .nav { padding: 0 10px; }
  .nav-inner { height: 56px; padding: 0 8px 0 12px; }
  .nav-qq span { display: none; }
  .nav-qq { width: 40px; padding: 0; justify-content: center; }
  .hero-cta .btn { flex: 1; justify-content: center; }
  .hero-stats dt { font-size: 21px; }
  .foot-inner { padding: 28px 18px 34px; }
  .faq details { padding: 4px 14px; }
  .atlas-card { padding: 16px; }
  .chips li { font-size: 12px; padding: 5px 9px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition-duration: .01ms !important; }
  .rv { opacity: 1; transform: none; }
}