/* ===================================================================
   女娲计划 · NÜWA — 官网样式
   设计语言：暗色基底 + 五色石渐变（青/金/紫/玫/翠）+ 玻璃拟态
   对标参考：AutoGPT / Manus 等 AI agent 产品官网的暗色极简观感
   =================================================================== */

/* 标题 / 导航字体：联想小新潮酷体（自托管 woff2，含 GB2312 汉字 + 拉丁字符）；正文用黑体（见 --font-sans） */
@font-face {
  font-family: "Lenovo Xiaoxin Chaoku";
  src: url("../fonts/LenovoXiaoxinChaoku.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #070711;
  --bg-2: #0b0b18;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-2: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.10);
  --border-strong: rgba(255, 255, 255, 0.18);
  --text: #ececf3;
  --muted: #9aa0b0;
  --muted-2: #6b7180;

  --cyan: #22d3ee;
  --gold: #fbbf24;
  --violet: #a78bfa;
  --rose: #fb7185;
  --emerald: #34d399;

  --grad: linear-gradient(100deg, #22d3ee 0%, #a78bfa 48%, #fbbf24 100%);
  --grad-soft: linear-gradient(100deg, rgba(34,211,238,0.18), rgba(167,139,250,0.18), rgba(251,191,36,0.18));

  --radius: 18px;
  --radius-sm: 12px;
  --maxw: 1180px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  /* 黑体：正文与其他内容（微软雅黑为 Windows 默认黑体，苹方 / 思源黑体兜底） */
  --font-sans: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  /* 联想小新潮酷体：仅用于导航与各级主标题 */
  --font-display: "Lenovo Xiaoxin Chaoku", "Sora", "Noto Sans SC", system-ui, sans-serif;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
strong, b { color: #fff; font-weight: 700; }

/* ---------- 背景光晕 ---------- */
.aurora {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background:
    radial-gradient(1200px 800px at 70% -10%, rgba(167,139,250,0.10), transparent 60%),
    radial-gradient(900px 700px at 10% 10%, rgba(34,211,238,0.08), transparent 55%),
    var(--bg);
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.45;
  animation: float 18s var(--ease) infinite alternate;
}
.orb--cyan   { width: 460px; height: 460px; top: -120px; left: -80px;  background: radial-gradient(circle, #22d3ee, transparent 70%); }
.orb--violet { width: 520px; height: 520px; top: 12%;   right: -140px; background: radial-gradient(circle, #a78bfa, transparent 70%); animation-delay: -4s; }
.orb--gold   { width: 380px; height: 380px; bottom: 4%;  left: 18%;    background: radial-gradient(circle, #fbbf24, transparent 70%); animation-delay: -8s; opacity: 0.32; }
.orb--rose   { width: 340px; height: 340px; bottom: -100px; right: 12%; background: radial-gradient(circle, #fb7185, transparent 70%); animation-delay: -12s; opacity: 0.30; }
.orb--emerald{ width: 300px; height: 300px; top: 46%;   left: 44%;     background: radial-gradient(circle, #34d399, transparent 70%); animation-delay: -6s; opacity: 0.22; }
.grid-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 78%);
}
@keyframes float {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(40px, 50px) scale(1.12); }
}

/* ---------- 导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(7, 7, 17, 0.62);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s;
}
.nav.is-scrolled { border-bottom-color: var(--border); background: rgba(7,7,17,0.82); }
.nav__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand__mark { display: grid; place-items: center; flex: none; }
.brand__logo {
  display: block; width: 30px; height: 30px;
  filter: drop-shadow(0 4px 12px rgba(124, 58, 237, 0.35));
  transition: transform 0.25s var(--ease), filter 0.25s var(--ease);
}
.brand:hover .brand__logo { transform: translateY(-1px) scale(1.05); filter: drop-shadow(0 6px 16px rgba(34, 211, 238, 0.45)); }
.brand__text { font-family: var(--font-display); font-weight: 800; font-size: 19px; letter-spacing: 0.5px; display: flex; align-items: baseline; gap: 8px; }
.brand__text em { font-style: normal; font-size: 11px; letter-spacing: 2px; color: var(--muted-2); font-weight: 600; }

.nav__links { display: flex; gap: 4px; margin-left: auto; }
.nav__links a {
  font-family: var(--font-display);
  font-size: 14px; color: var(--muted); padding: 8px 12px; border-radius: 10px;
  transition: color 0.2s, background 0.2s;
}
.nav__links a:hover { color: var(--text); background: var(--surface); }
.nav__links a.is-active { color: var(--text); background: var(--surface-2); }
.nav__links a.is-active::after {
  content: ""; display: block; height: 2px; margin-top: 4px; border-radius: 2px; background: var(--grad);
}

.nav__cta { display: flex; gap: 10px; margin-left: 8px; }
/* 导航内按钮沿用联想字体（属于导航范畴）；其余内容的按钮走黑体 */
.nav__cta .btn { font-family: var(--font-display); }
.nav__toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; margin-left: auto; }
.nav__panel { display: contents; }
.nav__toggle span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: 0.3s; }
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-sans); font-weight: 600; font-size: 14px;
  padding: 10px 18px; border-radius: 999px; cursor: pointer;
  border: 1px solid transparent; transition: transform 0.2s var(--ease), box-shadow 0.3s, background 0.3s, border-color 0.3s;
  white-space: nowrap;
}
.btn--lg { padding: 14px 26px; font-size: 15px; }
.btn--solid {
  background: var(--grad); color: #0a0a12;
  box-shadow: 0 8px 30px rgba(167,139,250,0.30);
}
.btn--solid:hover { transform: translateY(-2px); box-shadow: 0 12px 40px rgba(167,139,250,0.45); }
.btn--ghost { background: var(--surface); border-color: var(--border); color: var(--text); }
.btn--ghost:hover { border-color: var(--border-strong); background: var(--surface-2); transform: translateY(-2px); }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 120px 24px 90px; }
.hero__inner { max-width: 880px; margin: 0 auto; text-align: center; }
.pill {
  display: inline-block; font-size: 13px; letter-spacing: 1px; color: var(--cyan);
  border: 1px solid var(--border); border-radius: 999px; padding: 7px 16px; margin-bottom: 26px;
  background: var(--surface);
}
.hero__title {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(38px, 7vw, 76px); line-height: 1.08; letter-spacing: -1px;
  margin-bottom: 24px;
}
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero__lead { font-size: clamp(15px, 2.2vw, 19px); color: var(--muted); max-width: 720px; margin: 0 auto 36px; }
.hero__actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 56px; }
.hero__stats { list-style: none; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero__stats li {
  flex: 1 1 120px; max-width: 170px; padding: 18px 14px; border-radius: var(--radius-sm);
  background: var(--surface); border: 1px solid var(--border);
}
.hero__stats b { display: block; font-family: var(--font-sans); font-size: 30px; font-weight: 800; }
.hero__stats span { font-size: 12.5px; color: var(--muted); }
.hero__scroll {
  position: absolute; left: 50%; bottom: 18px; transform: translateX(-50%);
  font-size: 22px; color: var(--muted-2); animation: bob 2s ease-in-out infinite;
}
@keyframes bob { 0%,100% { transform: translate(-50%, 0); } 50% { transform: translate(-50%, 8px); } }

/* ---------- 通用 section ---------- */
.section { max-width: var(--maxw); margin: 0 auto; padding: 96px 24px; }
.section__head { max-width: 720px; margin-bottom: 48px; }
.kicker {
  display: inline-block; font-family: var(--font-sans); font-size: 13px; font-weight: 700;
  letter-spacing: 1px; color: var(--gold); margin-bottom: 14px;
}
.section__head h2 {
  font-family: var(--font-display); font-weight: 800; font-size: clamp(26px, 4vw, 40px);
  letter-spacing: -0.5px; line-height: 1.2; margin-bottom: 16px;
}
.section__head p { color: var(--muted); font-size: 16px; }

/* ---------- 卡片 ---------- */
.cards { display: grid; gap: 20px; }
.cards--3 { grid-template-columns: repeat(3, 1fr); }
.cards--2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; transition: transform 0.3s var(--ease), border-color 0.3s, background 0.3s, box-shadow 0.3s;
  position: relative; overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: var(--grad); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; opacity: 0; transition: opacity 0.3s;
}
.card:hover { transform: translateY(-6px); background: var(--surface-2); border-color: transparent; box-shadow: 0 20px 50px rgba(0,0,0,0.4); }
.card:hover::before { opacity: 0.7; }
.card__icon { font-size: 30px; margin-bottom: 14px; }
.card h3 { font-family: var(--font-display); font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 14.5px; }

.callout {
  margin-top: 24px; display: flex; gap: 16px; align-items: flex-start;
  background: var(--grad-soft); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px 26px;
}
.callout__tag {
  flex: none; font-family: var(--font-sans); font-weight: 700; font-size: 13px;
  color: var(--gold); border: 1px solid rgba(251,191,36,0.4); border-radius: 999px; padding: 6px 14px;
}
.callout p { color: var(--text); font-size: 15px; }

/* ---------- 架构栈 ---------- */
.stack { display: flex; flex-direction: column; gap: 14px; }
.stack__layer {
  display: flex; gap: 18px; align-items: stretch;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px 24px; transition: border-color 0.3s, background 0.3s, transform 0.3s var(--ease);
}
.stack__layer:hover { border-color: var(--border-strong); background: var(--surface-2); transform: translateX(6px); }
.stack__no {
  flex: none; width: 56px; height: 56px; border-radius: 14px; display: grid; place-items: center;
  font-family: var(--font-sans); font-weight: 800; font-size: 18px;
  background: var(--grad-soft); border: 1px solid var(--border); color: #fff;
}
.stack__body h4 { font-size: 17px; font-weight: 700; margin-bottom: 6px; }
.stack__body p { color: var(--muted); font-size: 14.5px; }

/* ---------- 双环进化 ---------- */
.evolution { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.evolution__diagram {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; display: grid; place-items: center;
}
.spin { animation: spin 14s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.evolution__text { display: flex; flex-direction: column; gap: 16px; }
.loop {
  background: var(--surface); border: 1px solid var(--border); border-left: 3px solid var(--violet);
  border-radius: var(--radius-sm); padding: 18px 22px; transition: background 0.3s, transform 0.3s var(--ease);
}
.loop:hover { background: var(--surface-2); transform: translateY(-3px); }
.loop--outer { border-left-color: var(--emerald); }
.loop--bridge { border-left-color: var(--gold); }
.loop h3 { font-size: 16px; font-weight: 700; margin-bottom: 6px; display: flex; align-items: center; gap: 9px; }
.loop p { color: var(--muted); font-size: 14px; }
.dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }
.dot--violet { background: var(--violet); }
.dot--emerald { background: var(--emerald); }
.dot--gold { background: var(--gold); }

/* ---------- 灵币经济 ---------- */
.tokens { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.token {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px;
  position: relative; overflow: hidden;
}
.token--lc { border-top: 3px solid var(--cyan); }
.token--ling { border-top: 3px solid var(--gold); }
.token header { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 16px; flex-wrap: wrap; gap: 8px; }
.token__sym { font-family: var(--font-sans); font-weight: 800; font-size: 22px; }
.token--lc .token__sym { color: var(--cyan); }
.token--ling .token__sym { color: var(--gold); }
.token__kind { font-size: 12.5px; color: var(--muted); border: 1px solid var(--border); border-radius: 999px; padding: 4px 12px; }
.token ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.token li { color: var(--muted); font-size: 14.5px; padding-left: 18px; position: relative; }
.token li::before { content: "▹"; position: absolute; left: 0; color: var(--violet); }
.token--lc li::before { color: var(--cyan); }
.token--ling li::before { color: var(--gold); }

.bme {
  margin-top: 22px; display: flex; gap: 16px; align-items: flex-start;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px 26px;
}
.bme__tag {
  flex: none; font-family: var(--font-sans); font-weight: 700; font-size: 12px; letter-spacing: 0.5px;
  color: var(--emerald); border: 1px solid rgba(52,211,153,0.4); border-radius: 999px; padding: 6px 14px;
}
.bme p { color: var(--text); font-size: 15px; }

/* ---------- 路线图 ---------- */
.timeline { list-style: none; position: relative; padding: 6px 0; display: grid; gap: 14px; }
.timeline::before {
  content: ""; position: absolute; left: 22px; top: 14px; bottom: 14px; width: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--violet), var(--gold)); opacity: 0.55;
}
.timeline li {
  position: relative; padding: 18px 20px 18px 52px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  transition: transform 0.3s var(--ease), background 0.3s, border-color 0.3s;
}
.timeline li:hover { transform: translateX(4px); background: var(--surface-2); border-color: var(--border-strong); }
.timeline li::before {
  content: ""; position: absolute; left: 16px; top: 24px; width: 14px; height: 14px; border-radius: 50%;
  background: var(--grad); box-shadow: 0 0 0 4px rgba(167,139,250,0.18);
}
.timeline__phase { font-family: var(--font-sans); font-weight: 800; font-size: 18px; margin-right: 12px; }
.timeline__when { font-size: 13px; color: var(--gold); border: 1px solid rgba(251,191,36,0.35); border-radius: 999px; padding: 3px 12px; }
.timeline li p { color: var(--muted); font-size: 14.5px; margin-top: 10px; }
.timeline__gate { display: inline-block; margin-top: 12px; font-size: 12.5px; font-weight: 700; color: var(--cyan); }

/* ---------- 文档网格 ---------- */
.docgrid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.doc {
  display: flex; flex-direction: column; gap: 4px; padding: 18px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm);
  transition: transform 0.3s var(--ease), background 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.doc:hover { transform: translateY(-4px); background: var(--surface-2); border-color: var(--border-strong); box-shadow: 0 14px 34px rgba(0,0,0,0.35); }
.doc b { font-family: var(--font-sans); font-weight: 800; font-size: 15px; color: #fff; }
.doc span { font-size: 13px; color: var(--muted); }

/* ---------- CTA ---------- */
.cta { padding: 80px 24px 100px; }
.cta__inner {
  max-width: 760px; margin: 0 auto; text-align: center;
  background: var(--grad-soft); border: 1px solid var(--border); border-radius: 28px; padding: 56px 36px;
  position: relative; overflow: hidden;
}
.cta__inner h2 { font-family: var(--font-display); font-weight: 800; font-size: clamp(24px, 4vw, 36px); margin-bottom: 14px; }
.cta__inner p { color: var(--muted); font-size: 16px; max-width: 560px; margin: 0 auto 28px; }
.cta__actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--border); background: var(--bg-2); }
.footer__inner {
  max-width: var(--maxw); margin: 0 auto; padding: 48px 24px 28px;
  display: flex; gap: 40px; justify-content: space-between; flex-wrap: wrap;
}
.footer__brand-top { display: flex; align-items: center; gap: 10px; }
.footer__brand .brand__logo { width: 34px; height: 34px; }
.footer__brand p { color: var(--muted); font-size: 13.5px; margin-top: 10px; max-width: 320px; }
.footer__links { display: flex; gap: 10px 22px; flex-wrap: wrap; align-content: flex-start; }
.footer__links a { color: var(--muted); font-size: 14px; transition: color 0.2s; }
.footer__links a:hover { color: var(--text); }
.footer__bar {
  max-width: var(--maxw); margin: 0 auto; padding: 18px 24px; border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  font-size: 12.5px; color: var(--muted-2);
}

/* ---------- 揭示动画 ---------- */
[data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
[data-reveal].is-visible { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .cards--3, .tokens, .evolution { grid-template-columns: 1fr; }
  .cards--2 { grid-template-columns: 1fr; }
  .docgrid { grid-template-columns: repeat(2, 1fr); }
  .nav__toggle { display: flex; }
  .nav__panel {
    display: none;
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 6px;
    background: rgba(7,7,17,0.96); backdrop-filter: blur(14px);
    padding: 12px 24px 22px; border-bottom: 1px solid var(--border);
  }
  .nav.is-open .nav__panel { display: flex; }
  .nav__links {
    display: flex; flex-direction: column; gap: 2px; margin-left: 0; width: 100%;
  }
  .nav__links a { padding: 12px 8px; border-bottom: 1px solid var(--border); }
  .nav__cta { display: flex; gap: 10px; margin-left: 0; margin-top: 14px; width: 100%; }
  .nav__cta .btn { flex: 1; }
}
@media (max-width: 560px) {
  .docgrid { grid-template-columns: 1fr; }
  .hero { padding-top: 92px; }
  .section { padding: 70px 20px; }
  .footer__bar { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto; }
  [data-reveal] { opacity: 1; transform: none; transition: none; }
}