:root {
  --bg: #05070d;
  --bg-2: #0a0e1a;
  --panel: rgba(18, 24, 40, 0.55);
  --panel-solid: #0e1422;
  --line: rgba(120, 160, 255, 0.16);
  --text: #e8eefc;
  --muted: #93a3c4;
  --cyan: #22d3ee;
  --purple: #a78bfa;
  --pink: #ec4899;
  --green: #34d399;
  --amber: #fbbf24;
  --orange: #fb923c;
  --blue: #60a5fa;
  --glow: 0 0 24px rgba(34, 211, 238, 0.35);
  --radius: 16px;
  --maxw: 1180px;
  font-synthesis: none;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: radial-gradient(1200px 800px at 80% -10%, #0c1530 0%, var(--bg) 55%) fixed, var(--bg);
  color: var(--text);
  font-family: "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 背景层 */
.bg-grid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(80, 130, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(80, 130, 255, 0.05) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 80%);
}
.bg-glow {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(600px 400px at 12% 20%, rgba(167, 139, 250, 0.12), transparent 70%),
    radial-gradient(700px 500px at 88% 70%, rgba(34, 211, 238, 0.10), transparent 70%);
}

/* 导航 */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 20px;
  padding: 14px clamp(16px, 4vw, 48px);
  backdrop-filter: blur(14px);
  background: linear-gradient(180deg, rgba(5, 7, 13, 0.85), rgba(5, 7, 13, 0.35));
  border-bottom: 1px solid var(--line);
}
.nav__logo { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--text); }
.nav__mark {
  width: 26px; height: 26px; border-radius: 8px;
  background: conic-gradient(from 200deg, var(--cyan), var(--purple), var(--pink), var(--cyan));
  box-shadow: var(--glow); position: relative;
}
.nav__mark::after {
  content: ""; position: absolute; inset: 6px; border-radius: 4px; background: var(--bg-2);
}
.nav__name { font-family: "Orbitron", sans-serif; font-weight: 700; letter-spacing: 1px; font-size: 18px; display: flex; flex-direction: column; line-height: 1; }
.nav__name small { font-family: "Noto Sans SC", sans-serif; font-weight: 400; font-size: 10px; color: var(--muted); letter-spacing: 0; margin-top: 4px; }
.nav__links { display: flex; gap: 22px; margin-left: auto; }
.nav__links a { color: var(--muted); text-decoration: none; font-size: 14px; transition: color .2s; }
.nav__links a:hover { color: var(--cyan); }
.nav__cta {
  text-decoration: none; color: #04121a; font-weight: 600; font-size: 14px;
  padding: 9px 16px; border-radius: 999px;
  background: linear-gradient(135deg, var(--cyan), #7dd3fc);
  box-shadow: var(--glow);
  transition: transform .2s, box-shadow .2s;
}
.nav__cta:hover { transform: translateY(-1px); box-shadow: 0 0 30px rgba(34,211,238,.55); }
.nav__trial {
  text-decoration: none; color: var(--cyan); font-weight: 600; font-size: 14px;
  padding: 9px 16px; border-radius: 999px;
  background: transparent;
  border: 1px solid rgba(34,211,238,.55);
  box-shadow: 0 0 14px rgba(34,211,238,.12);
  cursor: pointer;
  transition: transform .2s, box-shadow .2s, background .2s, color .2s;
}
.nav__trial:hover { transform: translateY(-1px); background: rgba(34,211,238,.10); box-shadow: 0 0 26px rgba(34,211,238,.45); }

/* 汉堡按钮（桌面隐藏，移动端显示） */
.nav__burger {
  display: none;
  flex-direction: column; justify-content: center; gap: 5px;
  width: 36px; height: 36px; padding: 0;
  background: none; border: none; cursor: pointer;
  margin-left: auto;
}
.nav__burger span {
  display: block; width: 22px; height: 2px; border-radius: 2px;
  background: var(--text); transition: transform .3s, opacity .3s;
  transform-origin: center;
}
.nav__burger.is-active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.is-active span:nth-child(2) { opacity: 0; }
.nav__burger.is-active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端下拉菜单 */
.nav__mobile {
  display: none;
  position: fixed; top: 60px; left: 0; right: 0; z-index: 49;
  flex-direction: column; gap: 0;
  background: rgba(5, 7, 13, 0.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line);
  transform: translateY(-100%); opacity: 0;
  transition: transform .3s ease, opacity .3s ease;
  pointer-events: none;
}
.nav__mobile.is-open {
  transform: translateY(0); opacity: 1; pointer-events: auto;
}
.nav__mobile a {
  display: block; padding: 16px 24px;
  color: var(--muted); text-decoration: none; font-size: 16px;
  border-bottom: 1px solid rgba(255,255,255,.06);
  transition: color .2s, background .2s;
}
.nav__mobile a:active { color: var(--cyan); background: rgba(34,211,238,.06); }
.nav__mobile-cta {
  color: #04121a !important; font-weight: 600;
  background: linear-gradient(135deg, var(--cyan), #7dd3fc);
  margin: 12px 16px; border-radius: 999px; text-align: center;
  border-bottom: none !important;
}

/* HERO */
.hero {
  position: relative; z-index: 1;
  min-height: 100dvh;
  display: flex; flex-direction: column; align-items: center;
  padding: 48px clamp(16px, 4vw, 48px) 32px;
  text-align: center;
}
.eyebrow {
  font-family: "Orbitron", sans-serif; letter-spacing: 4px; font-size: 12px;
  color: var(--cyan); margin: 0 0 14px;
}
.hero__title {
  font-family: "Orbitron", "Noto Sans SC", sans-serif;
  font-weight: 900; font-size: clamp(30px, 6vw, 64px); margin: 0 0 18px; line-height: 1.1;
}
.grad {
  background: linear-gradient(120deg, var(--cyan), var(--purple) 55%, var(--pink));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__sub { color: var(--muted); font-size: clamp(15px, 2vw, 19px); max-width: 720px; margin: 0 auto; }
.hero__sub strong { color: var(--text); font-weight: 600; }

.orbit-stage {
  position: relative; width: min(900px, 92vw); aspect-ratio: 1 / 1;
  margin: 10px auto 24px;
}
#orbit { width: 100%; height: 100%; display: block; }
.orbit-legend {
  position: absolute; left: 0; bottom: -8px; width: 100%;
  display: flex; flex-wrap: wrap; gap: 8px; justify-content: center;
}
.obtn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 13px; border-radius: 999px; cursor: pointer;
  font: 500 12px/1 "Noto Sans SC", system-ui, sans-serif; color: var(--muted);
  background: rgba(255,255,255,.04); border: 1px solid var(--line);
  transition: color .25s, border-color .25s, background .25s, box-shadow .25s;
}
.obtn:hover { color: var(--text); border-color: rgba(125,211,252,.4); }
.obtn .dot { width: 9px; height: 9px; border-radius: 50%; box-shadow: 0 0 9px currentColor; flex: none; }
.obtn.is-active {
  color: #eaf6ff; background: rgba(34,211,238,.12);
  border-color: rgba(34,211,238,.6); box-shadow: 0 0 14px rgba(34,211,238,.35);
}
.orbit-center-label {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  text-align: center; pointer-events: none;
}
.oc-core { display: block; font-family: "Orbitron", sans-serif; font-weight: 900; font-size: 30px; letter-spacing: 2px; color: #fff; text-shadow: 0 0 18px rgba(34,211,238,.9); }
.oc-cap { display: block; font-size: 11px; color: #bfe9ff; letter-spacing: 2px; margin-top: 2px; }

.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; margin-top: 0; padding-top: 96px; }
.btn { text-decoration: none; padding: 13px 26px; border-radius: 999px; font-weight: 600; font-size: 15px; transition: transform .2s, box-shadow .2s, background .2s; }
.btn--primary { color: #04121a; background: linear-gradient(135deg, var(--cyan), #7dd3fc); box-shadow: var(--glow); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 0 34px rgba(34,211,238,.6); }
.btn--ghost { color: var(--text); border: 1px solid var(--line); background: rgba(255,255,255,.02); }
.btn--ghost:hover { border-color: var(--cyan); color: var(--cyan); }

.scroll-hint { margin-top: 22px; font-size: 12px; color: var(--muted); letter-spacing: 2px; }
.scroll-hint span { display: block; width: 1px; height: 30px; margin: 8px auto 0; background: linear-gradient(var(--cyan), transparent); animation: scrollPulse 2s infinite; }
@keyframes scrollPulse { 0%,100% { opacity: .3; transform: scaleY(.6);} 50% { opacity: 1; transform: scaleY(1);} }

/* 通用 section */
.section { position: relative; z-index: 1; padding: clamp(60px, 9vw, 110px) clamp(16px, 4vw, 48px); max-width: var(--maxw); margin: 0 auto; }
.section--alt { background: linear-gradient(180deg, rgba(10,14,26,.0), rgba(14,20,34,.5), rgba(10,14,26,.0)); max-width: none; }
.section--alt > * { max-width: var(--maxw); margin-left: auto; margin-right: auto; }
.section__head { text-align: center; margin-bottom: 48px; }
.section__title { font-size: clamp(24px, 4vw, 40px); font-weight: 700; margin: 0 0 16px; }
.section__lead { color: var(--muted); max-width: 760px; margin: 0 auto; font-size: clamp(14px, 1.6vw, 17px); }

/* 卡片：核心能力 */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; backdrop-filter: blur(10px); position: relative; overflow: hidden;
  transition: transform .25s, border-color .25s, box-shadow .25s;
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit;
  background: radial-gradient(220px 120px at 10% -10%, rgba(34,211,238,.16), transparent 60%);
  opacity: 0; transition: opacity .3s;
}
.card:hover { transform: translateY(-4px); border-color: rgba(34,211,238,.45); box-shadow: 0 16px 40px rgba(0,0,0,.45); }
.card:hover::before { opacity: 1; }
.card__icon { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; margin-bottom: 16px; font-size: 22px; background: rgba(34,211,238,.12); border: 1px solid var(--line); }
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }

/* 漫剧流程 */
.pipeline { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; }
.step {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; position: relative; backdrop-filter: blur(10px);
  transition: transform .25s, border-color .25s;
}
.step:hover { transform: translateY(-4px); border-color: rgba(167,139,250,.5); }
.step__no { font-family: "Orbitron", sans-serif; font-size: 13px; color: var(--purple); letter-spacing: 1px; }
.step__title { font-size: 18px; margin: 6px 0 14px; font-weight: 600; }
.step__match { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 10px; background: rgba(34,211,238,.07); border: 1px solid rgba(34,211,238,.2); margin-bottom: 12px; }
.step__match .tag { font-size: 11px; padding: 2px 8px; border-radius: 6px; background: var(--purple); color: #0a0a14; font-weight: 600; white-space: nowrap; }
.step__match .tool { font-weight: 600; font-size: 15px; }
.step__reason { color: var(--muted); font-size: 13.5px; margin: 0; }

/* 知识库原理 */
.kb-flow { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; position: relative; }
.kb-node {
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 20px;
  backdrop-filter: blur(10px); position: relative;
}
.kb-node__step { font-family: "Orbitron", sans-serif; font-size: 12px; color: var(--cyan); letter-spacing: 1px; }
.kb-node h4 { margin: 8px 0 8px; font-size: 17px; }
.kb-node p { margin: 0; color: var(--muted); font-size: 13.5px; }
.kb-node__chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.kb-node__chips span { font-size: 11px; padding: 3px 9px; border-radius: 999px; background: rgba(255,255,255,.05); border: 1px solid var(--line); color: var(--muted); }
.kb-radar {
  margin-top: 36px; background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 28px; backdrop-filter: blur(10px);
}
.kb-radar__head { text-align: center; margin-bottom: 18px; }
.kb-radar__head h3 { margin: 0 0 8px; font-size: 20px; }
.kb-radar__head p { margin: 0 auto; color: var(--muted); font-size: 13.5px; max-width: 640px; line-height: 1.7; }
.kb-radar__controls { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 22px; }
.r-tab {
  font: 500 13px/1 system-ui, "Microsoft YaHei", sans-serif; color: var(--muted);
  background: rgba(255,255,255,.04); border: 1px solid var(--line);
  padding: 7px 14px; border-radius: 999px; cursor: pointer; transition: all .2s ease;
}
.r-tab:hover { color: #eaf6ff; border-color: rgba(34,211,238,.4); }
.r-tab.is-active { color: #06121f; background: var(--cyan); border-color: var(--cyan); box-shadow: 0 0 16px rgba(34,211,238,.4); }
.kb-radar__body { display: flex; flex-wrap: wrap; gap: 28px; align-items: center; justify-content: center; }
#radar { width: min(440px, 86vw); aspect-ratio: 1 / 1; }
.kb-radar__legend { display: grid; gap: 11px; min-width: 210px; }
.rl-item { display: flex; align-items: center; gap: 10px; font-size: 14px; }
.rl-dot { width: 12px; height: 12px; border-radius: 50%; box-shadow: 0 0 10px currentColor; flex: none; }
.rl-name { color: #eaf6ff; flex: 1; }
.rl-aim { color: var(--muted); font-family: "Orbitron", sans-serif; font-size: 12px; }

/* 排名 tabs */
.rank-tabs { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 30px; }
.rank-tab {
  cursor: pointer; border: 1px solid var(--line); background: var(--panel); color: var(--muted);
  padding: 9px 16px; border-radius: 999px; font-size: 14px; transition: all .2s; display: inline-flex; align-items: center; gap: 8px;
}
.rank-tab .tdot { width: 9px; height: 9px; border-radius: 50%; box-shadow: 0 0 8px currentColor; }
.rank-tab:hover { color: var(--text); }
.rank-tab.is-active { color: #04121a; background: linear-gradient(135deg, var(--cyan), #7dd3fc); border-color: transparent; font-weight: 600; }
.rank-tab.is-active .tdot { background: #04121a; box-shadow: none; }

.rank-panel { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.rank-card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; backdrop-filter: blur(10px); cursor: pointer; position: relative; overflow: hidden;
  transition: border-color .25s, transform .25s;
}
.rank-card:hover { border-color: rgba(34,211,238,.5); transform: translateY(-3px); }
.rank-card.is-open { border-color: var(--cyan); }
.rank-card__top { display: flex; align-items: baseline; gap: 12px; }
.rank-card__pos { font-family: "Orbitron", sans-serif; font-size: 22px; font-weight: 900; color: var(--cyan); }
.rank-card__name { font-size: 18px; font-weight: 600; }
.rank-card__index { margin-left: auto; text-align: right; }
.rank-card__index b { font-family: "Orbitron", sans-serif; font-size: 22px; color: #fff; }
.rank-card__index span { display: block; font-size: 11px; color: var(--muted); }
.rank-card__radar { display: flex; justify-content: center; margin-top: 14px; }
.card-radar { width: 100%; max-width: 200px; aspect-ratio: 1 / 1; }
.rank-card__detail { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.rank-card.is-open .rank-card__detail { max-height: 600px; margin-top: 16px; }
.detail-grid { display: grid; gap: 12px; border-top: 1px solid var(--line); padding-top: 14px; }
.detail-item h5 { margin: 0 0 4px; font-size: 13px; color: var(--cyan); }
.detail-item p { margin: 0; font-size: 13px; color: var(--muted); }
.rank-card__more { font-size: 12px; color: var(--cyan); margin-top: 14px; }

/* 页脚 */
.footer { position: relative; z-index: 1; border-top: 1px solid var(--line); padding: 40px clamp(16px, 4vw, 48px); text-align: center; background: rgba(5,7,13,.6); }
.footer__brand { display: inline-flex; align-items: center; gap: 10px; font-family: "Orbitron", sans-serif; font-weight: 700; letter-spacing: 1px; margin-bottom: 12px; }
.footer__note { color: var(--muted); font-size: 13px; max-width: 720px; margin: 0 auto 10px; }
.footer__copy { color: #5d6b8a; font-size: 12px; margin: 0; }

/* 滚动揭示 */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-in { opacity: 1; transform: none; }

/* 微信二维码弹窗（与 webuddy.top / 一印俱全 一致；暗色适配 AIM 深空主题） */
.wechat-modal {
  position: fixed; inset: 0; z-index: 9999;
  display: none; align-items: center; justify-content: center;
  padding: 16px;
}
.wechat-modal.is-open { display: flex; }
.wechat-modal-backdrop {
  position: absolute; inset: 0;
  background: rgba(2, 4, 10, 0.78);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  animation: wmFadeIn .25s ease;
}
.wechat-modal-card {
  position: relative; z-index: 1;
  background: linear-gradient(180deg, #0c1428 0%, #050810 100%);
  border: 1px solid rgba(125, 211, 252, 0.32);
  border-radius: 18px;
  padding: 28px 28px 22px;
  max-width: 360px; width: 100%;
  text-align: center;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55), 0 0 40px rgba(34, 211, 238, 0.18);
  animation: wmPopIn .3s cubic-bezier(.34, 1.56, .64, 1);
}
.wechat-modal-card h3 {
  margin: 0 0 16px;
  font-size: 18px; font-weight: 600;
  color: var(--text);
}
.wechat-modal-qr {
  background: #fff;
  border-radius: 12px;
  padding: 12px;
  width: 220px; height: 220px;
  margin: 0 auto 16px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 0 1px rgba(125, 211, 252, 0.2), 0 8px 24px rgba(0, 0, 0, 0.35);
}
.wechat-modal-qr img { width: 100%; height: 100%; object-fit: contain; display: block; }
.wechat-modal-card p { color: var(--muted); font-size: 14px; margin: 0; }
.wechat-modal-close {
  position: absolute; top: 8px; right: 12px;
  background: none; border: 0;
  color: var(--muted); font-size: 28px; line-height: 1;
  cursor: pointer; padding: 4px 10px;
  transition: color .2s, transform .2s;
}
.wechat-modal-close:hover { color: var(--text); transform: scale(1.08); }
@keyframes wmFadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes wmPopIn {
  from { opacity: 0; transform: scale(0.86) translateY(8px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

/* 响应式 */
@media (max-width: 760px) {
  .nav { gap: 10px; }
  .nav__links { display: none; }
  .nav__cta {
    display: inline-flex; align-items: center;
    margin-left: auto; margin-right: 8px;
    padding: 7px 14px; font-size: 13px;
  }
  .nav__trial { display: none; }
  .nav__burger { display: flex; margin-left: 0; }
  .nav__mobile { display: flex; }
  .orbit-stage { margin-bottom: 92px; }
  .orbit-legend { gap: 6px; bottom: -84px; padding: 0 10px; }
  .obtn { padding: 5px 10px; font-size: 11px; }
  .oc-core { font-size: 24px; }
  .hero__actions { padding-top: 28px; }
  .hero__actions .btn { padding: 11px 20px; font-size: 14px; }
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .scroll-hint span { animation: none; }
  .wechat-modal-backdrop, .wechat-modal-card { animation: none; }
}