/* 袋鼠数据・全栈数商 —— 独立站
   海洋数据编辑风：深海军蓝主色 + 数据青 + 生态金；明暗节奏；零构建、离线可用 */

:root{
  --navy:#0B1D3A;
  --navy-deep:#061226;
  --navy-soft:#10233F;
  --paper:#F4F6F9;
  --ink:#0E1E33;
  --ink-2:#33465F;
  --muted:#5B6B80;

  --cyan:#127FB0;
  --cyan-bright:#5CC8F0;
  --gold:#9A6A0B;
  --gold-bright:#FBBF24;
  --blue:#2563EB;
  --green:#0F7A5A;
  --green-bright:#34D399;
  --amber:#B45309;
  --coral:#B23B3B;

  --radius:12px;
  --radius-sm:8px;
  --stage:1180px;
  --nav-h:66px;
  --pad-x:clamp(20px,5vw,72px);
  --font-sans:"PingFang SC","Noto Sans CJK SC","Noto Sans SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-display:"Noto Serif CJK SC","Noto Serif SC","Songti SC","Source Han Serif SC",Georgia,serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Consolas,monospace;
}

/* ---------- 区块明暗主题 ---------- */
[data-tone="dark"]{
  --bg:var(--navy);
  --fg:#EDF3FA;
  --fg-2:#C3D2E4;
  --muted-fg:#93A8C0;
  --line:#22344C;
  --card:#10233F;
  --card-2:#0d1e38;
  --card-line:#213755;
  --accent:var(--cyan-bright);
  --accent-2:var(--gold-bright);
  --tint:rgba(92,200,240,.10);
  --tint-line:rgba(92,200,240,.30);
  --gold-tint:rgba(251,191,36,.10);
  --gold-tint-line:rgba(251,191,36,.34);
}
[data-tone="paper"]{
  --bg:var(--paper);
  --fg:var(--ink);
  --fg-2:var(--ink-2);
  --muted-fg:var(--muted);
  --line:#D8E0E9;
  --card:#FFFFFF;
  --card-2:#FBFCFE;
  --card-line:#DDE4EC;
  --accent:var(--cyan);
  --accent-2:var(--gold);
  --tint:rgba(18,127,176,.07);
  --tint-line:rgba(18,127,176,.26);
  --gold-tint:rgba(154,106,11,.08);
  --gold-tint-line:rgba(154,106,11,.3);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font-sans);color:#EDF3FA;background:var(--navy-deep);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;line-height:1.6;
  overflow-x:hidden;
}
img,svg{display:block;max-width:100%}
a{color:inherit}
::selection{background:rgba(92,200,240,.3);color:#fff}

/* 自定义滚动条（站点配色） */
html{scrollbar-width:thin;scrollbar-color:#2a4a6e #0a1830}
::-webkit-scrollbar{width:11px;height:11px}
::-webkit-scrollbar-track{background:#0a1830}
::-webkit-scrollbar-thumb{background:#2a4a6e;border-radius:8px;border:2px solid #0a1830}
::-webkit-scrollbar-thumb:hover{background:#3a628e}

.wrap{width:100%;max-width:var(--stage);margin:0 auto;padding-inline:var(--pad-x)}

/* ---------- 滚动进度 ---------- */
.scroll-progress{position:fixed;top:0;left:0;right:0;height:3px;z-index:60;background:rgba(255,255,255,.06)}
.scroll-progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--cyan-bright),var(--gold-bright));transition:width .1s linear}

/* ---------- 导航 ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;height:var(--nav-h);
  background:rgba(6,18,38,.72);backdrop-filter:blur(14px) saturate(1.2);
  border-bottom:1px solid rgba(255,255,255,.07);transition:background-color .3s ease,box-shadow .3s ease}
.nav.scrolled{background:rgba(6,18,38,.92);box-shadow:0 8px 30px rgba(0,0,0,.28)}
.nav-inner{max-width:var(--stage);margin:0 auto;height:100%;padding-inline:var(--pad-x);
  display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:#EDF3FA;min-width:0}
.brand-mark{color:var(--cyan-bright);display:flex;flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.brand-text b{font-family:var(--font-display);font-size:18px;letter-spacing:.5px}
.brand-text span{font-size:11px;color:#93A8C0;letter-spacing:.04em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{position:relative;text-decoration:none;color:#B9C9DC;font-size:13.5px;letter-spacing:.02em;
  padding:9px 12px;border-radius:7px;transition:color .2s ease,background-color .2s ease;white-space:nowrap}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-links a.active{color:var(--cyan-bright)}
.nav-links a.active::after{content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;border-radius:2px;background:var(--cyan-bright)}
.nav-links a:focus-visible{outline:2px solid var(--cyan-bright);outline-offset:2px}
.nav-cta{margin-left:8px;background:var(--gold-bright);color:#231a05 !important;font-weight:700;border-radius:8px}
.nav-cta:hover{background:#ffd35e !important}
.nav-cta.active::after{display:none}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;
  background:none;border:1px solid rgba(255,255,255,.16);border-radius:9px;cursor:pointer;padding:0 10px}
.nav-toggle span{display:block;height:2px;width:100%;background:#EDF3FA;border-radius:2px;transition:transform .25s ease,opacity .2s ease}
.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;gap:9px;text-decoration:none;cursor:pointer;
  font:inherit;font-size:14.5px;font-weight:600;line-height:1;padding:14px 22px;border-radius:10px;
  border:1px solid transparent;transition:transform .18s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease}
.btn span{transition:transform .2s ease}
.btn:hover span{transform:translateX(4px)}
.btn:focus-visible{outline:2px solid var(--cyan-bright);outline-offset:3px}
.btn--gold{background:linear-gradient(135deg,#FBBF24,#F59E0B);color:#231a05;box-shadow:0 10px 30px rgba(245,158,11,.28)}
.btn--gold:hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(245,158,11,.4)}
.btn--ghost{background:rgba(255,255,255,.05);color:#EDF3FA;border-color:rgba(255,255,255,.22)}
.btn--ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.4);transform:translateY(-2px)}
.btn--lg{padding:17px 30px;font-size:16px}

/* ---------- 入场动画 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.22,.61,.36,1),transform .7s cubic-bezier(.22,.61,.36,1);transition-delay:var(--d,0s)}
.reveal.in{opacity:1;transform:none}

/* ---------- HERO ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;overflow:hidden;
  padding:calc(var(--nav-h) + 48px) 0 96px;background:radial-gradient(120% 120% at 50% 0%,#0d2242 0%,var(--navy) 42%,var(--navy-deep) 100%)}
.hero-canvas{position:absolute;inset:0;width:100%;height:100%;z-index:0;opacity:.9}
.hero-mesh{position:absolute;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(46% 40% at 16% 22%,rgba(37,99,235,.30),transparent 70%),
    radial-gradient(40% 38% at 84% 16%,rgba(92,200,240,.22),transparent 72%),
    radial-gradient(46% 46% at 72% 88%,rgba(251,191,36,.14),transparent 72%);
  filter:blur(6px);animation:meshDrift 22s ease-in-out infinite alternate}
@keyframes meshDrift{0%{transform:translate3d(0,0,0) scale(1)}100%{transform:translate3d(-2%,1.5%,0) scale(1.06)}}
.hero-grain{position:absolute;inset:0;z-index:1;pointer-events:none;opacity:.05;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='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
.hero-inner{position:relative;z-index:2}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12.5px;letter-spacing:.18em;color:var(--cyan-bright);
  font-weight:600;margin:0 0 22px;padding:7px 15px;border:1px solid rgba(92,200,240,.3);border-radius:999px;background:rgba(92,200,240,.08)}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--cyan-bright);box-shadow:0 0 12px var(--cyan-bright)}
.hero-title{font-family:var(--font-display);font-weight:700;font-size:clamp(42px,7.4vw,92px);line-height:1.08;
  letter-spacing:.01em;margin:0 0 26px;color:#F4F8FD}
.hero-title em{font-style:normal;background:linear-gradient(120deg,#7DD3FC,#FBBF24);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{font-size:clamp(15.5px,1.55vw,20px);line-height:1.8;color:#C3D2E4;max-width:62ch;margin:0 0 34px}
.hero-lead b{color:#EDF3FA;font-weight:650}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:52px}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;max-width:880px;
  padding-top:30px;border-top:1px solid rgba(255,255,255,.12)}
.hstat{display:flex;flex-direction:column;gap:7px}
.hstat-v{font-family:var(--font-display);font-weight:700;font-size:clamp(28px,3.4vw,46px);line-height:1;color:#F4F8FD;font-variant-numeric:tabular-nums;display:flex;align-items:baseline;gap:3px}
.hstat-v small{font-size:.4em;font-weight:600;color:var(--cyan-bright);font-family:var(--font-sans)}
.hstat-k{font-size:12.5px;color:#93A8C0;letter-spacing:.03em}
.hero-src{margin:22px 0 0;font-size:11.5px;color:#7E93AC;max-width:70ch}
.hero-src a{color:var(--cyan-bright);text-decoration:none;border-bottom:1px solid currentColor}
.scroll-cue{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:2;
  display:flex;flex-direction:column;align-items:center;gap:8px;text-decoration:none;color:#93A8C0;font-size:11px;letter-spacing:.14em}
.scroll-cue span{width:22px;height:34px;border:1.5px solid rgba(255,255,255,.3);border-radius:12px;position:relative}
.scroll-cue span::after{content:"";position:absolute;left:50%;top:7px;width:3px;height:7px;border-radius:2px;background:var(--cyan-bright);transform:translateX(-50%);animation:cue 1.8s ease-in-out infinite}
@keyframes cue{0%{opacity:0;transform:translate(-50%,0)}40%{opacity:1}100%{opacity:0;transform:translate(-50%,12px)}}

/* ---------- 通用区块 ---------- */
.section{position:relative;background:var(--bg);color:var(--fg);padding:clamp(64px,9vw,118px) 0;scroll-margin-top:var(--nav-h);overflow:hidden}
.section::before{content:"";position:absolute;inset:0;pointer-events:none;opacity:.6;
  background:radial-gradient(900px 460px at 88% -8%,var(--tint),transparent 62%)}
.section .wrap{position:relative;z-index:1}
.sec-head{max-width:820px;margin-bottom:clamp(34px,5vw,56px)}
.kicker{display:inline-flex;align-items:center;gap:11px;font-size:13px;letter-spacing:.12em;font-weight:700;color:var(--accent);margin:0 0 18px}
.kicker-no{font-family:var(--font-mono);font-size:12px;display:inline-flex;align-items:center;justify-content:center;
  min-width:30px;height:24px;padding:0 7px;border-radius:6px;background:var(--tint);border:1px solid var(--tint-line);letter-spacing:.04em}
.kicker--gold{color:var(--accent-2)}
.kicker--gold .kicker-no{background:var(--gold-tint);border-color:var(--gold-tint-line)}
.sec-title{font-family:var(--font-display);font-weight:700;font-size:clamp(28px,4.2vw,52px);line-height:1.18;letter-spacing:.01em;margin:0 0 20px}
.hl{position:relative;color:var(--accent);white-space:nowrap}
.hl--gold{color:var(--accent-2)}
.sec-lead{font-size:clamp(15px,1.35vw,18px);line-height:1.85;color:var(--fg-2);margin:0}
.sec-lead b{color:var(--fg);font-weight:650}
.src{margin:26px 0 0;font-size:11.5px;line-height:1.7;color:var(--muted-fg);max-width:90ch}
.src a{color:var(--accent);text-decoration:none;border-bottom:1px solid currentColor}
.src a:hover{opacity:.78}

.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}

/* ---------- 01 什么是数商 ---------- */
.policy-band{position:relative;background:var(--card);border:1px solid var(--card-line);border-left:4px solid var(--accent);
  border-radius:var(--radius);padding:22px 26px;margin-bottom:30px}
.policy-tag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--accent);
  background:var(--tint);border:1px solid var(--tint-line);border-radius:6px;padding:4px 11px;margin-bottom:12px}
.policy-band>p{margin:0 0 16px;font-size:14.5px;line-height:1.75;color:var(--fg-2)}
.policy-band a{color:var(--accent);text-decoration:none;border-bottom:1px solid currentColor}
.policy-three{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.p3{background:var(--card-2);border:1px solid var(--card-line);border-radius:var(--radius-sm);padding:14px 16px;display:flex;flex-direction:column;gap:5px}
.p3 b{font-size:14.5px;color:var(--fg)}
.p3 span{font-size:12.5px;color:var(--muted-fg);line-height:1.55}
.p3--on{border-color:var(--tint-line);background:var(--tint)}
.p3--on b{color:var(--accent)}

.cats{margin-bottom:26px}
.cat{position:relative;background:var(--card);border:1px solid var(--card-line);border-radius:var(--radius);
  padding:24px 24px 22px;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease}
.cat:hover{transform:translateY(-4px);border-color:var(--tint-line);box-shadow:0 18px 44px rgba(8,20,40,.1)}
.cat-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.cat-idx{font-family:var(--font-display);font-size:30px;font-weight:700;color:var(--accent);line-height:1}
.cat-badge{font-size:11.5px;font-weight:700;letter-spacing:.04em;color:var(--green);background:rgba(15,122,90,.1);
  border:1px solid rgba(15,122,90,.3);border-radius:999px;padding:4px 11px}
[data-tone="dark"] .cat-badge{color:var(--green-bright);background:rgba(52,211,153,.1);border-color:rgba(52,211,153,.3)}
.cat h3{margin:0 0 6px;font-size:19px;font-weight:700;color:var(--fg)}
.cat-role{margin:0 0 12px;font-size:12.5px;font-weight:600;letter-spacing:.03em;color:var(--accent)}
.cat>p:last-child{margin:0;font-size:14px;line-height:1.7;color:var(--fg-2)}

.trinity{background:var(--tint);border:1px solid var(--tint-line);border-radius:var(--radius);padding:24px 26px}
.trinity-eq{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:14px}
.t-chip{font-size:14px;font-weight:700;color:var(--accent);background:var(--card);border:1px solid var(--tint-line);border-radius:8px;padding:8px 16px}
.t-op{font-family:var(--font-display);font-size:20px;color:var(--muted-fg);font-weight:700}
.t-result{font-family:var(--font-display);font-size:clamp(16px,1.8vw,22px);font-weight:700;color:var(--fg);
  background:linear-gradient(120deg,var(--tint),var(--gold-tint));border:1px solid var(--gold-tint-line);border-radius:8px;padding:8px 18px}
.trinity>p{margin:0;font-size:14px;line-height:1.75;color:var(--fg-2)}
.trinity b{color:var(--fg)}

/* ---------- 02 全栈能力矩阵 ---------- */
.modes{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:28px}
.mode-card{display:flex;align-items:flex-start;gap:13px;background:var(--card);border:1px solid var(--card-line);
  border-radius:var(--radius);padding:18px 20px;position:relative}
.mode-dot{flex:0 0 auto;width:11px;height:11px;border-radius:50%;margin-top:5px}
.mode-card--own .mode-dot{background:var(--cyan-bright);box-shadow:0 0 12px rgba(92,200,240,.6)}
.mode-card--tri .mode-dot{background:var(--gold-bright);box-shadow:0 0 12px rgba(251,191,36,.5)}
.mode-card--nat .mode-dot{background:var(--green-bright);box-shadow:0 0 12px rgba(52,211,153,.5)}
.mode-card>div{flex:1 1 auto;min-width:0}
.mode-card b{display:block;font-size:15px;color:var(--fg);margin-bottom:5px}
.mode-card p{margin:0;font-size:12.5px;line-height:1.6;color:var(--muted-fg)}
.mode-n{font-family:var(--font-display);font-size:30px;font-weight:700;color:var(--fg);opacity:.32;line-height:1}

.filter{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:18px}
.filter-btn{appearance:none;cursor:pointer;font:inherit;font-size:13.5px;font-weight:600;color:var(--fg-2);
  background:var(--card);border:1px solid var(--card-line);border-radius:999px;padding:9px 18px;
  display:inline-flex;align-items:center;gap:8px;transition:all .2s ease}
.filter-btn span{font-family:var(--font-mono);font-size:11.5px;opacity:.6}
.filter-btn:hover{border-color:var(--tint-line);color:var(--fg)}
.filter-btn.is-active{background:var(--accent);border-color:var(--accent);color:var(--navy-deep)}
.filter-btn.is-active span{opacity:.75}
.filter-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.table-wrap{overflow-x:auto;border:1px solid var(--card-line);border-radius:var(--radius);background:var(--card);scrollbar-width:thin}
.matrix{width:100%;border-collapse:collapse;font-size:13.5px;min-width:680px}
.matrix th,.matrix td{text-align:left;padding:13px 16px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.6}
.matrix th{font-weight:700;color:var(--fg);background:var(--tint);white-space:nowrap;font-size:13px;letter-spacing:.02em}
.matrix td{color:var(--fg-2)}
.matrix td:first-child{color:var(--fg);font-weight:650;white-space:nowrap}
.matrix td:last-child{color:var(--muted-fg);font-size:12.5px}
.matrix tbody tr{transition:background-color .2s ease,opacity .3s ease}
.matrix tbody tr:hover{background:var(--tint)}
.matrix tbody tr:last-child td{border-bottom:0}
.matrix tr.hide{display:none}
.mode{display:inline-block;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:700;line-height:1.6;white-space:nowrap;border:1px solid currentColor}
.mode--own{color:var(--cyan-bright);background:rgba(92,200,240,.1)}
.mode--tri{color:var(--gold-bright);background:rgba(251,191,36,.1)}
.mode--nat{color:var(--green-bright);background:rgba(52,211,153,.1)}
[data-tone="paper"] .mode--own{color:var(--cyan);background:rgba(18,127,176,.08)}
[data-tone="paper"] .mode--tri{color:var(--amber);background:rgba(180,83,9,.08)}
[data-tone="paper"] .mode--nat{color:var(--green);background:rgba(15,122,90,.08)}
.matrix-empty{margin:18px 0 0;font-size:14px;color:var(--muted-fg)}

/* ---------- 03 全链路软件 stepper ---------- */
.stepper{background:var(--card);border:1px solid var(--card-line);border-radius:var(--radius);padding:26px;margin-bottom:24px}
.stepper-track{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;position:relative;margin-bottom:24px}
.stepper-track::before{content:"";position:absolute;left:6%;right:6%;top:21px;height:2px;background:var(--line);z-index:0}
.snode{position:relative;z-index:1;appearance:none;cursor:pointer;font:inherit;background:none;border:0;
  display:flex;flex-direction:column;align-items:center;gap:9px;padding:0;color:var(--muted-fg);transition:color .2s ease}
.snode-no{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:50%;
  font-family:var(--font-mono);font-size:14px;font-weight:700;background:var(--card-2);border:2px solid var(--card-line);
  color:var(--muted-fg);transition:all .25s ease}
.snode-name{font-size:13px;font-weight:650;letter-spacing:.02em;text-align:center}
.snode:hover{color:var(--fg)}
.snode:hover .snode-no{border-color:var(--tint-line)}
.snode.is-active{color:var(--accent)}
.snode.is-active .snode-no{background:var(--accent);border-color:var(--accent);color:var(--navy-deep);box-shadow:0 0 0 5px var(--tint)}
.snode:focus-visible{outline:none}
.snode:focus-visible .snode-no{outline:2px solid var(--accent);outline-offset:3px}
.stepper-detail{background:var(--card-2);border:1px solid var(--card-line);border-left:4px solid var(--accent);border-radius:var(--radius-sm);padding:22px 24px;min-height:150px}
.sd-head{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:12px}
.sd-no{font-family:var(--font-display);font-size:30px;font-weight:700;color:var(--accent);line-height:1}
.sd-head h3{margin:0;font-size:20px;font-weight:700;color:var(--fg);flex:1 1 auto}
.sd-desc{margin:0 0 16px;font-size:15px;line-height:1.8;color:var(--fg-2)}
.sd-meta{display:flex;flex-wrap:wrap;gap:10px 24px;font-size:12.5px;color:var(--muted-fg)}
.sd-carrier,.sd-ai{display:inline-flex;align-items:center;gap:7px}
.sd-carrier::before,.sd-ai::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);opacity:.7}
.stepper-detail.swap{animation:sdIn .4s ease}
@keyframes sdIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

.soft-base{display:flex;gap:16px;align-items:flex-start;background:var(--tint);border:1px solid var(--tint-line);border-radius:var(--radius);padding:20px 24px}
.soft-base-tag{flex:0 0 auto;font-size:12.5px;font-weight:700;letter-spacing:.06em;color:var(--accent);background:var(--card);border:1px solid var(--tint-line);border-radius:7px;padding:6px 13px;white-space:nowrap}
.soft-base p{margin:0;font-size:14px;line-height:1.8;color:var(--fg-2)}
.soft-base b{color:var(--fg)}

/* ---------- 04 生态共建（重点） ---------- */
.section--eco{background:linear-gradient(180deg,#0a1c38 0%,var(--navy) 50%,#0a1c38 100%)}
.section--eco::before{background:radial-gradient(1000px 520px at 50% -10%,rgba(251,191,36,.12),transparent 64%);opacity:1}
.eco-glow{position:absolute;left:50%;top:-120px;width:680px;height:420px;transform:translateX(-50%);pointer-events:none;
  background:radial-gradient(closest-side,rgba(251,191,36,.18),transparent);filter:blur(20px);z-index:0}
.partners{margin-bottom:30px}
.partner{position:relative;background:linear-gradient(180deg,rgba(251,191,36,.07),var(--card));
  border:1px solid var(--gold-tint-line);border-radius:var(--radius);padding:28px 26px 26px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.partner:hover{transform:translateY(-5px);border-color:var(--gold-bright);box-shadow:0 22px 50px rgba(0,0,0,.34)}
.partner-ico{display:flex;align-items:center;justify-content:center;width:60px;height:60px;border-radius:14px;
  color:var(--gold-bright);background:rgba(251,191,36,.1);border:1px solid var(--gold-tint-line);margin-bottom:18px}
.partner h3{margin:0 0 6px;font-family:var(--font-display);font-size:23px;font-weight:700;color:#F4F8FD}
.partner-role{margin:0 0 13px;font-size:12.5px;font-weight:700;letter-spacing:.05em;color:var(--gold-bright)}
.partner>p:last-child{margin:0;font-size:14px;line-height:1.75;color:var(--fg-2)}

.synergy{background:var(--card);border:1px solid var(--gold-tint-line);border-radius:var(--radius);padding:26px 28px}
.synergy-head{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:22px}
.synergy-flag{font-size:12.5px;font-weight:700;letter-spacing:.06em;color:#231a05;background:linear-gradient(135deg,#FBBF24,#F59E0B);border-radius:7px;padding:6px 14px;white-space:nowrap}
.synergy-head h3{margin:0;font-size:clamp(16px,1.7vw,21px);font-weight:700;color:#F4F8FD}
.synergy-flow{display:flex;align-items:center;gap:22px;flex-wrap:wrap;margin-bottom:20px}
.synergy-parties{display:flex;flex-wrap:wrap;gap:10px;flex:1 1 auto}
.sp{font-size:14px;font-weight:700;padding:11px 18px;border-radius:10px;border:1px solid;letter-spacing:.04em}
.sp--gov{color:#FCD9A0;border-color:rgba(252,217,160,.4);background:rgba(252,217,160,.1)}
.sp--tech{color:#93C5FD;border-color:rgba(147,197,253,.4);background:rgba(147,197,253,.1)}
.sp--acad{color:#C4B5FD;border-color:rgba(196,181,253,.4);background:rgba(196,181,253,.1)}
.sp--fin{color:#FDE68A;border-color:rgba(253,230,138,.4);background:rgba(253,230,138,.1)}
.sp--ind{color:#6EE7B7;border-color:rgba(110,231,183,.4);background:rgba(110,231,183,.1)}
.synergy-arrow{font-size:30px;color:var(--gold-bright);font-weight:700;flex:0 0 auto}
.synergy-result{flex:0 0 auto;display:flex;flex-direction:column;gap:5px;background:linear-gradient(135deg,rgba(251,191,36,.16),rgba(92,200,240,.1));
  border:1px solid var(--gold-tint-line);border-radius:12px;padding:16px 22px}
.synergy-result b{font-family:var(--font-display);font-size:19px;color:#F4F8FD}
.synergy-result span{font-size:12.5px;color:var(--gold-bright);letter-spacing:.02em}
.synergy-line{margin:0;font-size:14.5px;line-height:1.8;color:var(--fg-2)}
.synergy-line b{color:var(--gold-bright)}
.synergy-line a{color:var(--cyan-bright);text-decoration:none;border-bottom:1px solid currentColor}

/* ---------- 05 差异化价值 ---------- */
.values{gap:20px}
.value{display:flex;gap:18px;background:var(--card);border:1px solid var(--card-line);border-radius:var(--radius);
  padding:26px 28px;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease}
.value:hover{transform:translateY(-4px);border-color:var(--tint-line);box-shadow:0 18px 44px rgba(8,20,40,.1)}
.value-no{flex:0 0 auto;font-family:var(--font-display);font-size:34px;font-weight:700;color:var(--accent);opacity:.5;line-height:1}
.value h3{margin:0 0 9px;font-size:19px;font-weight:700;color:var(--fg)}
.value p{margin:0;font-size:14px;line-height:1.78;color:var(--fg-2)}

/* ---------- （已移除）数据底座与标杆样式，保留备用 ---------- */
.base-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:22px;align-items:stretch}
.asset-hero{position:relative;background:linear-gradient(160deg,rgba(92,200,240,.1),var(--card));
  border:1px solid var(--tint-line);border-radius:var(--radius);padding:30px 32px;overflow:hidden;display:flex;flex-direction:column}
.asset-hero::before{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(560px 220px at 8% 0%,rgba(92,200,240,.16),transparent 70%)}
.asset-tag{position:relative;display:inline-block;align-self:flex-start;font-size:12.5px;font-weight:700;letter-spacing:.06em;color:var(--cyan-bright);
  border:1px solid var(--tint-line);border-radius:7px;padding:6px 13px;margin-bottom:18px;background:rgba(92,200,240,.08)}
.asset-num{position:relative;display:flex;align-items:baseline;gap:5px;flex-wrap:wrap;font-family:var(--font-display);font-weight:700;
  font-size:clamp(38px,5vw,66px);line-height:1;color:#F4F8FD;font-variant-numeric:tabular-nums;margin-bottom:20px}
.asset-num small{font-size:.32em;font-weight:600;color:var(--cyan-bright);font-family:var(--font-sans)}
.asset-sep{width:1px;height:.5em;background:var(--line);margin:0 16px;align-self:center}
.asset-desc{position:relative;margin:auto 0 0;font-size:14px;line-height:1.8;color:var(--fg-2)}
.asset-desc strong{color:#F4F8FD}

.case{background:var(--card);border:1px solid var(--card-line);border-radius:var(--radius);padding:30px 32px;display:flex;flex-direction:column}
.case-tag{display:inline-block;align-self:flex-start;font-size:12.5px;font-weight:700;letter-spacing:.04em;color:var(--gold-bright);
  border:1px solid var(--gold-tint-line);border-radius:7px;padding:6px 13px;margin-bottom:22px;background:rgba(251,191,36,.08)}
.case-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:22px}
.cstat{display:flex;flex-direction:column;gap:7px}
.cstat-v{font-family:var(--font-display);font-weight:700;font-size:clamp(24px,2.8vw,38px);line-height:1;color:var(--gold-bright);font-variant-numeric:tabular-nums;display:flex;align-items:baseline;gap:2px}
.cstat-v small{font-size:.4em;font-weight:600;color:var(--fg-2);font-family:var(--font-sans)}
.cstat-k{font-size:12px;color:var(--muted-fg);line-height:1.45}
.case-desc{margin:auto 0 0;font-size:13.5px;line-height:1.75;color:var(--fg-2)}
.case-note{display:block;margin-top:8px;font-size:11.5px;color:var(--muted-fg)}

/* ---------- 06 政策窗口 ---------- */
.section--policy{border-top:1px solid var(--line);background:linear-gradient(180deg,#EDF1F7,var(--paper) 38%)}
.block-label{margin:0 0 14px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em;color:var(--muted-fg)}
.timeline{margin:4px 0 clamp(34px,4.5vw,52px)}
.timeline-track{position:relative;display:grid;grid-template-columns:repeat(5,1fr)}
.timeline-track::before{content:"";position:absolute;left:5px;right:calc(100% / 5);top:10px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--tint-line),var(--tint-line) 55%,var(--gold-tint-line))}
.tl-node{position:relative;padding:34px 18px 0 0}
.tl-node::before{content:"";position:absolute;left:0;top:4px;width:13px;height:13px;border-radius:50%;
  background:var(--card);border:2px solid var(--accent);box-shadow:0 0 0 4px var(--tint)}
.tl-node:last-child::before{border-color:var(--accent-2);box-shadow:0 0 0 4px var(--gold-tint)}
.tl-date{font-family:var(--font-mono);font-size:11.5px;font-weight:600;letter-spacing:.06em;color:var(--accent)}
.tl-node:last-child .tl-date{color:var(--accent-2)}
.tl-node h3{margin:6px 0 6px;font-size:15px;font-weight:700;line-height:1.45;color:var(--fg)}
.tl-node p{margin:0;font-size:12.5px;line-height:1.68;color:var(--muted-fg)}

.window-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:clamp(28px,3.6vw,40px)}
.window{position:relative;background:var(--card);border:1px solid var(--card-line);border-radius:var(--radius);
  padding:22px 22px 20px 25px;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease}
.window:hover{transform:translateY(-3px);border-color:var(--tint-line);box-shadow:0 14px 34px rgba(8,20,40,.08)}
.window::before{content:"";position:absolute;left:0;top:22px;bottom:20px;width:3px;border-radius:0 3px 3px 0;background:var(--accent)}
.window:nth-child(2)::before{background:var(--accent-2)}
.window:nth-child(3)::before{background:var(--green)}
.window:nth-child(4)::before{background:var(--coral)}
.window-no{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;color:var(--muted-fg)}
.window h3{margin:7px 0 8px;font-size:17px;font-weight:700;color:var(--fg)}
.window p{margin:0;font-size:13px;line-height:1.72;color:var(--fg-2)}

.regions{background:var(--card);border:1px solid var(--card-line);border-radius:var(--radius);padding:22px 24px 24px}
.regions-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:18px}
.regions-tag{font-size:11.5px;font-weight:700;letter-spacing:.08em;color:var(--accent-2);
  background:var(--gold-tint);border:1px solid var(--gold-tint-line);border-radius:6px;padding:4px 10px}
.regions-head h3{margin:0;font-size:16.5px;font-weight:700;color:var(--fg)}
.regions-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.region{display:flex;flex-direction:column;gap:5px;text-decoration:none;color:inherit;padding:16px 18px;
  background:var(--card-2);border:1px solid var(--card-line);border-radius:var(--radius-sm);
  transition:transform .22s ease,border-color .22s ease,background-color .22s ease}
.region:hover{transform:translateY(-2px);border-color:var(--tint-line);background:var(--card)}
.region:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.region-city{display:flex;align-items:center;gap:8px;font-family:var(--font-display);font-size:12.5px;font-weight:700;letter-spacing:.06em;color:var(--accent)}
.region-zone{font-family:var(--font-sans);font-style:normal;font-size:10.5px;font-weight:600;letter-spacing:.04em;color:var(--muted-fg);
  border:1px solid var(--card-line);border-radius:4px;padding:1px 5px}
.region b{font-size:14px;line-height:1.5;color:var(--fg)}
.region p{margin:0;font-size:12.5px;line-height:1.65;color:var(--muted-fg)}
.region::after{content:"原文 →";margin-top:3px;font-size:11.5px;letter-spacing:.04em;color:var(--accent)}

.policy-close{margin:26px 0 0;max-width:82ch;font-size:15px;line-height:1.8;color:var(--fg-2)}
.policy-close b{color:var(--fg);font-weight:700}

/* ---------- 共建邀请 ---------- */
.join{position:relative;background:linear-gradient(160deg,#0a1c38,var(--navy-deep));color:#EDF3FA;
  padding:clamp(72px,10vw,128px) 0;scroll-margin-top:var(--nav-h);overflow:hidden;text-align:center}
.join-glow{position:absolute;left:50%;top:0;width:760px;height:460px;transform:translateX(-50%);pointer-events:none;
  background:radial-gradient(closest-side,rgba(251,191,36,.16),transparent);filter:blur(16px)}
.join-inner{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center}
.join .kicker{justify-content:center}
.join-title{font-family:var(--font-display);font-weight:700;font-size:clamp(30px,5vw,60px);line-height:1.2;margin:0 0 22px;color:#F4F8FD}
.join-title em{font-style:normal;background:linear-gradient(120deg,#FBBF24,#7DD3FC);-webkit-background-clip:text;background-clip:text;color:transparent}
.join-lead{font-size:clamp(15px,1.5vw,19px);line-height:1.8;color:#C3D2E4;max-width:60ch;margin:0 0 36px}
.join-actions{display:flex;flex-wrap:wrap;gap:16px;justify-content:center}

/* ---------- 页脚 ---------- */
.footer{background:var(--navy-deep);color:#93A8C0;padding:56px 0 0;border-top:1px solid rgba(255,255,255,.07)}
.footer-inner{display:grid;grid-template-columns:1fr 1.2fr;gap:44px;padding-bottom:40px}
.footer-brand b{font-family:var(--font-display);font-size:22px;color:#EDF3FA;display:block;margin-bottom:12px}
.footer-brand p{margin:0 0 10px;font-size:13px;line-height:1.7}
.footer-line{color:#7E93AC;font-size:12.5px !important;max-width:46ch}
.footer-src h4{margin:0 0 14px;font-size:13px;letter-spacing:.08em;color:var(--cyan-bright);font-weight:700}
.footer-src ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px}
.footer-src a{font-size:12.5px;line-height:1.6;color:#93A8C0;text-decoration:none;border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease}
.footer-src a:hover{color:var(--cyan-bright);border-color:currentColor}
.footer-bottom{display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;padding-block:20px;
  border-top:1px solid rgba(255,255,255,.07);font-size:11.5px;color:#6E839C}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:24px 18px}
  .base-grid{grid-template-columns:1fr}
  .modes{grid-template-columns:1fr}
  .mode-card{align-items:center}
  .footer-inner{grid-template-columns:1fr;gap:32px}
  .timeline-track{grid-template-columns:repeat(3,1fr);row-gap:30px}
  .timeline-track::before{display:none}
  .window-grid{grid-template-columns:repeat(2,1fr)}
  .regions-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:760px){
  :root{--nav-h:60px}
  .nav-links{position:fixed;top:var(--nav-h);left:0;right:0;flex-direction:column;align-items:stretch;gap:2px;
    background:rgba(6,18,38,.98);backdrop-filter:blur(14px);padding:14px var(--pad-x) 22px;
    border-bottom:1px solid rgba(255,255,255,.1);transform:translateY(-130%);transition:transform .3s ease;
    max-height:calc(100svh - var(--nav-h));overflow-y:auto;box-shadow:0 20px 40px rgba(0,0,0,.4)}
  .nav-links.open{transform:translateY(0)}
  .nav-links a{padding:14px 12px;font-size:15px;border-radius:9px}
  .nav-links a.active::after{display:none}
  .nav-links a.active{background:rgba(92,200,240,.12)}
  .nav-cta{margin:8px 0 0;text-align:center;justify-content:center;display:flex}
  .nav-toggle{display:flex}
  .brand-text span{display:none}
  .hero{padding:calc(var(--nav-h) + 32px) 0 84px;min-height:auto}
  .hero-actions{margin-bottom:40px}
  .hero-actions .btn{flex:1 1 auto;justify-content:center}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:22px 16px}
  .scroll-cue{display:none}
  .g2,.g3{grid-template-columns:1fr}
  .policy-three{grid-template-columns:1fr}
  .trinity-eq{gap:8px}
  .t-op{font-size:16px}
  .stepper{padding:20px 16px}
  .stepper-track{grid-template-columns:repeat(5,1fr);gap:4px}
  .stepper-track::before{left:9%;right:9%;top:18px}
  .snode-no{width:36px;height:36px;font-size:12px}
  .snode-name{font-size:10.5px;line-height:1.3}
  .snode.is-active .snode-no{box-shadow:0 0 0 3px var(--tint)}
  .stepper-detail{padding:18px}
  .sd-head h3{font-size:18px}
  .soft-base{flex-direction:column;gap:12px}
  .synergy-flow{flex-direction:column;align-items:stretch;gap:14px}
  .synergy-arrow{transform:rotate(90deg);align-self:center;font-size:24px}
  .synergy-result{align-items:flex-start}
  .value{padding:22px}
  .asset-hero,.case{padding:24px 22px}
  .case-stats{grid-template-columns:1fr;gap:18px}
  .cstat{flex-direction:row;align-items:baseline;gap:12px}
  .cstat-v{font-size:30px}
  .join-actions{flex-direction:column;width:100%}
  .join-actions .btn{justify-content:center}
  .footer-bottom{flex-direction:column;gap:6px}
  .matrix{font-size:12.5px}
  .matrix th,.matrix td{padding:11px 12px}
  .timeline-track{display:block}
  .tl-node{padding:0 0 22px 24px;border-left:2px solid var(--tint-line)}
  .tl-node:last-child{border-left-color:transparent;padding-bottom:0}
  .tl-node::before{left:-7px;top:2px}
  .window-grid{grid-template-columns:1fr}
  .regions{padding:20px 18px}
  .regions-grid{grid-template-columns:1fr}
  .regions-head h3{font-size:15px}
  .policy-close{font-size:14px}
}
@media (max-width:400px){
  .hero-stats{grid-template-columns:1fr}
  .hstat{flex-direction:row;align-items:baseline;gap:12px}
  .stepper-track{grid-template-columns:repeat(5,1fr)}
  .snode-name{font-size:9.5px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  .hero-mesh{animation:none}
}

@media print{
  .nav,.scroll-progress,.scroll-cue,.hero-canvas,.hero-mesh,.hero-grain,.eco-glow,.join-glow{display:none!important}
  .reveal{opacity:1;transform:none}
  .section,.hero,.join{padding:24px 0;break-inside:avoid}
  body{background:#fff;color:#000}
}