*{margin:0;padding:0;box-sizing:border-box}
:root{
  --ink:#0b1020; --ink2:#111a36;
  --paper:#ffffff; --paper2:#f5f7fd;
  --text:#141b2e; --muted:#5b6577;
  --indigo:#4f46e5; --violet:#7c3aed; --cyan:#06b6d4;
  --grad:linear-gradient(120deg,#4f46e5,#7c3aed 55%,#06b6d4 110%);
  /* 兼容 tupu/assets/matrix.css 的旧变量名，已映射到新版色板 */
  --line:#e6e9f5; --gold:#4f46e5; --gold-d:#4f46e5;
}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;color:var(--text);background:var(--paper);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 28px}

/* 导航：毛玻璃白 */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;background:rgba(255,255,255,.78);backdrop-filter:blur(14px);border-bottom:1px solid rgba(15,23,42,.07)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;letter-spacing:.06em}
.brand .mark{width:32px;height:32px;border-radius:10px;background:var(--grad);display:flex;align-items:center;justify-content:center;color:#fff;font-size:17px;font-weight:800}
.brand small{font-size:11px;font-weight:600;letter-spacing:.18em;color:var(--muted)}
.nav-links{display:flex;gap:30px;align-items:center}
.nav-links a{font-size:14.5px;color:#3c4658;font-weight:500}
.nav-links a:hover{color:var(--indigo)}
.btn{display:inline-block;padding:12px 30px;border-radius:999px;font-size:15px;font-weight:700;transition:transform .2s,box-shadow .2s}
.btn-grad{background:var(--grad);color:#fff;box-shadow:0 10px 28px rgba(99,102,241,.35)}
.btn-grad:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(99,102,241,.45)}
.btn-ghost{border:1.5px solid rgba(255,255,255,.35);color:#fff}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn-sm{padding:9px 22px;font-size:13.5px}
@media(max-width:760px){.nav-links a{display:none}}

/* Hero：深空 + 极光 */
.hero{position:relative;overflow:hidden;background:#070b18;color:#fff;padding:150px 0 90px;min-height:92vh;display:flex;align-items:center}
.aurora{position:absolute;inset:0;pointer-events:none}
.aurora i{position:absolute;border-radius:50%;filter:blur(90px);opacity:.55;animation:drift 14s ease-in-out infinite alternate}
.aurora i:nth-child(1){width:560px;height:560px;left:-120px;top:-140px;background:#4f46e5}
.aurora i:nth-child(2){width:480px;height:480px;right:-100px;top:10%;background:#7c3aed;animation-delay:-5s}
.aurora i:nth-child(3){width:420px;height:420px;left:38%;bottom:-180px;background:#06b6d4;opacity:.35;animation-delay:-9s}
@keyframes drift{from{transform:translate(0,0) scale(1)}to{transform:translate(60px,40px) scale(1.12)}}
.hero-grid{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:center}
@media(max-width:960px){.hero-grid{grid-template-columns:1fr}}
.badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;padding:8px 18px;border-radius:999px;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.16);color:#dbe2ff;margin-bottom:26px}
.badge .dot{width:8px;height:8px;border-radius:50%;background:#34d399;box-shadow:0 0 10px #34d399}
.hero h1{font-size:clamp(40px,5.6vw,68px);font-weight:800;line-height:1.28;letter-spacing:.02em;margin-bottom:20px}
.hero h1 .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:17px;color:#aab4d0;max-width:560px;margin-bottom:34px}
.hero-ctas{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:56px}
.stats{display:flex;gap:44px;flex-wrap:wrap}
.stat b{display:block;font-size:34px;font-weight:800;background:linear-gradient(120deg,#a5b4fc,#e9d5ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:13px;color:#8b96b5}
/* Hero 右侧：悬浮卡片组 */
.hero-cards{position:relative;height:460px}
@media(max-width:960px){.hero-cards{display:none}}
.fcard{position:absolute;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(10px);border-radius:20px;padding:26px 28px;box-shadow:0 24px 60px rgba(0,0,0,.35);animation:float 7s ease-in-out infinite}
.fcard:nth-child(1){top:0;left:0;width:270px}
.fcard:nth-child(2){top:150px;right:0;width:250px;animation-delay:-2.5s}
.fcard:nth-child(3){bottom:0;left:40px;width:280px;animation-delay:-5s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
.fcard .k{font-size:12px;letter-spacing:.22em;color:#a5b4fc;font-weight:700;margin-bottom:10px}
.fcard h4{font-size:17px;margin-bottom:8px}
.fcard p{font-size:13px;color:#9aa5c4;line-height:1.7}
.fcard .bar{height:6px;border-radius:99px;background:rgba(255,255,255,.12);margin-top:14px;overflow:hidden}
.fcard .bar i{display:block;height:100%;border-radius:99px;background:var(--grad)}

/* 跑马灯 */
.ticker{background:var(--ink);border-top:1px solid rgba(255,255,255,.08);border-bottom:1px solid rgba(255,255,255,.08);overflow:hidden;padding:16px 0;white-space:nowrap}
.ticker span{display:inline-block;color:#c7d0ea;font-size:14px;letter-spacing:.28em;margin:0 34px;animation:tick 26s linear infinite}
.ticker b{color:#818cf8;margin:0 6px}
@keyframes tick{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* 通用节 */
.sec{padding:104px 0}
.sec.alt{background:var(--paper2)}
.kicker{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.24em;color:#fff;background:var(--grad);padding:7px 18px;border-radius:999px;margin-bottom:20px}
h2.tt{font-size:clamp(30px,3.8vw,44px);font-weight:800;letter-spacing:.02em;margin-bottom:14px;line-height:1.35}
.sec-desc{color:var(--muted);font-size:16px;max-width:720px;margin-bottom:54px}

/* 三支柱 */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
@media(max-width:900px){.pillars{grid-template-columns:1fr}}
.pillar{background:#fff;border-radius:22px;padding:40px 34px;border:1px solid #eceff7;transition:transform .25s,box-shadow .25s;position:relative;overflow:hidden}
.pillar::before{content:"";position:absolute;top:0;left:0;right:0;height:5px;background:var(--grad);opacity:0;transition:opacity .25s}
.pillar:hover{transform:translateY(-8px);box-shadow:0 26px 60px rgba(79,70,229,.14)}
.pillar:hover::before{opacity:1}
.pillar .ic{width:54px;height:54px;border-radius:16px;background:var(--grad);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:22px;box-shadow:0 10px 24px rgba(99,102,241,.3)}
.pillar .n{font-size:12px;font-weight:700;letter-spacing:.24em;color:var(--indigo);margin-bottom:10px}
.pillar h3{font-size:21px;margin-bottom:12px}
.pillar p{font-size:14.5px;color:var(--muted)}

/* 双入口 */
.cards{display:grid;grid-template-columns:1fr 1fr;gap:28px}
@media(max-width:900px){.cards{grid-template-columns:1fr}}
.entry{border-radius:24px;padding:48px 44px;display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s;position:relative;overflow:hidden}
.entry:hover{transform:translateY(-8px)}
.entry.dark{background:linear-gradient(135deg,#131a38,#1e1b4b 60%,#312e81);color:#fff;box-shadow:0 24px 60px rgba(30,27,75,.4)}
.entry.light{background:#fff;border:1px solid #e6e9f5;box-shadow:0 18px 44px rgba(15,23,42,.07)}
.entry .tag{display:inline-block;align-self:flex-start;font-size:12px;font-weight:700;letter-spacing:.2em;padding:7px 16px;border-radius:999px;margin-bottom:20px}
.entry.dark .tag{background:rgba(255,255,255,.12);color:#c7d2fe}
.entry.light .tag{background:#eef0ff;color:var(--indigo)}
.entry h3{font-size:27px;margin-bottom:14px;line-height:1.45}
.entry p{font-size:14.5px;flex:1}
.entry.dark p{color:#b9c2dd}
.entry.light p{color:var(--muted)}
.entry .meta{margin-top:24px;font-size:13px}
.entry.dark .meta{color:#8b96b5}
.entry.light .meta{color:#8a93a8}
.entry .go{margin-top:20px;font-weight:700;font-size:15px}
.entry.dark .go{color:#a5b4fc}
.entry.light .go{color:var(--indigo)}
.entry .big{position:absolute;right:-14px;bottom:-38px;font-size:150px;font-weight:800;opacity:.07;line-height:1;pointer-events:none}

/* 方法速览 */
.glance-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;margin-bottom:40px}
@media(max-width:900px){.glance-grid{grid-template-columns:1fr}}
.glance{background:#fff;border:1px solid #eceff7;border-radius:22px;padding:38px 36px}
.glance h3{font-size:19px;margin-bottom:20px;display:flex;align-items:center;gap:14px}
.glance h3 .kk{font-size:12px;font-weight:700;letter-spacing:.18em;color:#fff;background:var(--grad);padding:7px 15px;border-radius:999px;white-space:nowrap}
.steps{list-style:none}
.steps li{display:flex;gap:16px;padding:11px 0;border-bottom:1px dashed #e8ebf4;font-size:14.5px;align-items:baseline}
.steps li:last-child{border-bottom:none}
.steps li::before{content:attr(data-n);font-weight:800;font-size:13px;color:#fff;background:linear-gradient(135deg,#4f46e5,#7c3aed);border-radius:9px;min-width:30px;height:30px;display:flex;align-items:center;justify-content:center}
.steps li b{font-weight:700}
.principles{list-style:none}
.principles li{padding:10px 0 10px 30px;position:relative;font-size:14.5px;border-bottom:1px dashed #e8ebf4}
.principles li:last-child{border-bottom:none}
.principles li::before{content:"✓";position:absolute;left:2px;color:#fff;background:linear-gradient(135deg,#06b6d4,#4f46e5);width:20px;height:20px;border-radius:50%;font-size:12px;display:flex;align-items:center;justify-content:center;top:13px;font-weight:700}
.center{text-align:center}

/* 关于 + 页脚 */
.about{background:var(--ink);color:#dbe2f5;padding:96px 0 0;position:relative;overflow:hidden}
.about::before{content:"";position:absolute;width:600px;height:600px;border-radius:50%;background:#4f46e5;filter:blur(160px);opacity:.22;right:-180px;top:-120px}
.about-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:56px;position:relative;margin-bottom:70px}
@media(max-width:900px){.about-grid{grid-template-columns:1fr}}
.about h2{font-size:34px;margin-bottom:18px;color:#fff}
.about p{font-size:15px;color:#9aa5c4;margin-bottom:16px;max-width:640px}
.about b{color:#fff}
.about .links a{display:inline-block;margin:6px 14px 6px 0;padding:10px 22px;border-radius:999px;border:1px solid rgba(255,255,255,.18);font-size:14px;color:#dbe2f5;transition:.2s}
.about .links a:hover{border-color:#818cf8;color:#fff;background:rgba(99,102,241,.15)}
footer{border-top:1px solid rgba(255,255,255,.09);padding:26px 0;position:relative}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:#7c87a3}
footer a{color:#9aa5c4}

/* ===== 内容页（方法论/图谱/法务/联系）：沿用新版设计语言 ===== */
.doc-hero{background:linear-gradient(135deg,#0b1020 0%,#171238 70%,#1e1b4b 100%);color:#eef1f6;padding:150px 0 70px;position:relative;overflow:hidden}
.doc-hero::before{content:"";position:absolute;width:520px;height:520px;border-radius:50%;background:#4f46e5;filter:blur(140px);opacity:.28;right:-140px;top:-100px}
.doc-hero .wrap{position:relative}
.doc-hero h1{font-size:clamp(30px,4.6vw,48px);letter-spacing:.04em;line-height:1.5;margin:14px 0;color:#fff}
.doc-hero .by{color:#aab4d0;font-size:15px;margin-top:10px}
.doc-hero .dl{display:inline-block;margin-top:28px;padding:12px 30px;background:var(--grad);color:#fff;text-decoration:none;border-radius:999px;font-size:14px;font-weight:700;box-shadow:0 10px 28px rgba(99,102,241,.35)}
.eyebrow{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.24em;color:#fff;background:var(--grad);padding:7px 18px;border-radius:999px;margin-bottom:6px}
.chapter{background:#fff;border:1px solid #eceff7;border-radius:18px;padding:38px 36px;margin:26px 0}
.chapter h2{font-size:22px;letter-spacing:.03em;margin-bottom:6px}
.chapter h2 .ch{color:#fff;background:var(--grad);font-size:12.5px;letter-spacing:.22em;display:inline-block;margin:0 12px 4px 0;font-weight:700;padding:6px 15px;border-radius:999px;vertical-align:middle}
.chapter p{font-size:15px;color:var(--text);margin:12px 0}
.chapter ul{margin:10px 0 10px 22px;font-size:14.5px;color:var(--text)}
.chapter li{margin:7px 0}
.kv{width:100%;border-collapse:collapse;margin:16px 0;font-size:14px}
.kv th{background:#141b2e;color:#fff;text-align:left;padding:10px 14px;font-weight:600;white-space:nowrap}
.kv td{border-bottom:1px solid #eceff7;padding:10px 14px;vertical-align:top}
.kv tr:nth-child(even) td{background:#f6f7fb}
.quote{border-left:3px solid #4f46e5;background:#f5f6ff;padding:16px 20px;margin:18px 0;font-size:15px;border-radius:0 12px 12px 0}
.quote b{font-weight:700}
.toc{background:#fff;border:1px solid #eceff7;border-radius:18px;padding:30px 34px;margin:26px 0}
.toc h2{font-size:20px;margin-bottom:16px;letter-spacing:.04em}
.toc ol{margin-left:22px;font-size:14.5px;columns:2}
@media(max-width:860px){.toc ol{columns:1}}
.toc li{margin:8px 0}
.toc a{text-decoration:none;color:var(--text)}
.toc a:hover{color:var(--indigo)}
.back{display:inline-block;margin:26px 0 0;color:var(--indigo);text-decoration:none;letter-spacing:.1em;font-size:14px;font-weight:600}
.rv{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.rv.on{opacity:1;transform:none}
.method-fig{margin:26px 0;border:1px solid #eceff7;border-radius:14px;padding:16px;background:#fff}
.method-fig img{width:100%;height:auto;display:block;border-radius:8px}
.method-fig figcaption{margin-top:10px;text-align:center;font-size:13px;color:var(--muted);letter-spacing:.06em}
.side-toc{position:fixed;top:120px;left:calc(50% - 696px);width:208px;max-height:calc(100vh - 150px);overflow:auto;display:none;z-index:40;background:#fff;border:none;border-radius:14px;padding:14px 12px;box-shadow:0 6px 24px rgba(15,23,42,.08);transition:opacity .25s;scrollbar-width:none;-ms-overflow-style:none}
.side-toc::-webkit-scrollbar{display:none}
.side-toc.toc-hidden{opacity:0;pointer-events:none}
@media(min-width:1440px){.side-toc{display:block}}
.side-toc-title{font-size:12px;letter-spacing:.3em;color:var(--indigo);font-weight:700;margin-bottom:10px;padding-left:12px}
.side-toc nav{display:flex;flex-direction:column}
.side-toc a{font-size:13px;color:var(--muted);text-decoration:none;padding:5px 12px;border-left:2px solid #eceff7;transition:color .2s,border-color .2s,background .2s;line-height:1.5}
.side-toc a:hover{color:#141b2e}
.side-toc a.active{color:var(--indigo);border-left-color:var(--indigo);font-weight:700;background:#eef0ff}
.toc-drawer{display:none;margin:0 0 22px;border:1px solid #eceff7;border-radius:14px;background:#fff}
@media(max-width:1439px){.toc-drawer{display:block}}
.toc-drawer summary{cursor:pointer;padding:14px 20px;font-size:15px;font-weight:600;letter-spacing:.08em;list-style:none;display:flex;justify-content:space-between;align-items:center}
.toc-drawer summary::-webkit-details-marker{display:none}
.toc-drawer summary::after{content:"+";color:var(--indigo);font-size:20px;font-weight:400}
.toc-drawer[open] summary::after{content:"–"}
.toc-drawer nav{display:grid;grid-template-columns:1fr 1fr;gap:2px 12px;padding:4px 20px 18px}
@media(max-width:640px){.toc-drawer nav{grid-template-columns:1fr}}
.toc-drawer nav a{font-size:14px;color:var(--text);text-decoration:none;padding:7px 4px;border-bottom:1px dashed #eceff7}
.toc-drawer nav a:hover{color:var(--indigo)}
.to-toc{display:inline-block;margin-top:16px;font-size:13px;color:var(--indigo);text-decoration:none;letter-spacing:.1em}
.to-toc:hover{text-decoration:underline}
.wechat-card{display:flex;gap:32px;align-items:center;background:#fff;border:1px solid #eceff7;border-radius:20px;padding:32px;margin:20px 0 8px;flex-wrap:wrap}
.wechat-card img{width:220px;height:auto;border-radius:14px;box-shadow:0 14px 36px rgba(79,70,229,.16)}
.wechat-card .wc-t{font-size:17px;font-weight:700;margin-bottom:10px}
.wechat-card .wc-d{font-size:14.5px;color:var(--muted);max-width:420px}