@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&display=swap');
/* ============================================================
   AIEarn — 深色科技风设计系统（Tech · Premium · Motion）
   配色：深空底 + 玻璃拟态 + 霓虹渐变；动效：滚动揭示 / 悬浮辉光 / 数字滚动
   ============================================================ */
:root{
  /* canvas + surface（深空科技底） */
  --canvas:#060912;
  --canvas-2:#0a0f1c;
  --surface:rgba(255,255,255,.035);
  --surface-soft:rgba(255,255,255,.05);
  --surface-2:#0e1526;
  --hairline:rgba(255,255,255,.09);
  --hairline-soft:rgba(255,255,255,.06);

  /* ink / text */
  --ink:#eaf0fb;
  --ink-strong:#ffffff;
  --charcoal:#c7d0e0;
  --slate:#9aa6bd;
  --steel:#7f8aa3;
  --stone:#aeb8cc;
  --muted:#6f7a92;

  /* brand / neon */
  --primary:#6366f1;
  --on-primary:#ffffff;
  --coral:#ff5d3a;
  --magenta:#e879f9;
  --blue:#3b82f6;
  --blue-mid:#60a5fa;
  --cyan:#22d3ee;
  --purple:#a855f7;
  --orange:#fb923c;
  --violet:#8b5cf6;
  --success-text:#34d399;
  --success-bg:rgba(52,211,153,.12);
  --footer-bg:#04060d;

  /* 主渐变（霓虹青→靛→紫） */
  --grad:linear-gradient(120deg,#22d3ee 0%,#6366f1 48%,#a855f7 100%);
  --grad-soft:linear-gradient(120deg,rgba(34,211,238,.18),rgba(99,102,241,.18),rgba(168,85,247,.18));

  /* radius */
  --r-xs:4px; --r-sm:6px; --r-md:10px; --r-lg:14px; --r-xl:18px;
  --r-xxl:22px; --r-xxxl:26px; --r-hero:28px; --r-full:9999px;

  /* spacing */
  --maxw:1280px;
  --gutter:32px;

  --font:'DM Sans','Inter',-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  --display:'Space Grotesk','DM Sans','PingFang SC','Microsoft YaHei',sans-serif;
}

/* ---------- reset ---------- */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:var(--font);
  background:var(--canvas);
  color:var(--charcoal);
  line-height:1.55;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
/* 背景：极光光斑 + 科技网格 */
body::before{
  content:"";position:fixed;inset:-20% -10% -10% -10%;z-index:-2;
  background:
    radial-gradient(38% 32% at 18% 12%,rgba(34,211,238,.20),transparent 60%),
    radial-gradient(40% 36% at 84% 8%,rgba(168,85,247,.20),transparent 62%),
    radial-gradient(46% 42% at 60% 92%,rgba(99,102,241,.20),transparent 60%),
    radial-gradient(30% 26% at 8% 78%,rgba(255,93,58,.12),transparent 60%);
  filter:blur(8px);
  animation:aurora 22s ease-in-out infinite alternate;
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:54px 54px;
  -webkit-mask-image:radial-gradient(120% 90% at 50% 0%,#000 30%,transparent 78%);
  mask-image:radial-gradient(120% 90% at 50% 0%,#000 30%,transparent 78%);
  opacity:.5;
}
@keyframes aurora{
  0%{transform:translate3d(0,0,0) scale(1)}
  50%{transform:translate3d(2%,1.5%,0) scale(1.06)}
  100%{transform:translate3d(-2%,-1%,0) scale(1.03)}
}
a{color:inherit;text-decoration:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}
img{max-width:100%}
::selection{background:rgba(99,102,241,.35);color:#fff}

/* 滚动进度条 */
.scroll-progress{position:fixed;top:0;left:0;height:3px;width:0;z-index:200;
  background:var(--grad);box-shadow:0 0 14px rgba(99,102,241,.75);transition:width .12s linear}

/* ============================================================
   HEADER — 玻璃导航，滚动后增强辉光
   ============================================================ */
#site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(8,11,20,.62);
  backdrop-filter:saturate(160%) blur(14px);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid var(--hairline-soft);
  transition:background .3s,border-color .3s,box-shadow .3s;
}
#site-header.scrolled{background:rgba(8,11,20,.82);border-bottom-color:rgba(99,102,241,.28);
  box-shadow:0 10px 34px -16px rgba(99,102,241,.55)}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:11px;font-size:19px;font-weight:700;letter-spacing:-.2px;color:var(--ink);font-family:var(--display)}
.brand .logo{
  width:34px;height:34px;border-radius:11px;position:relative;
  background:var(--grad);color:#fff;display:grid;place-items:center;font-size:17px;font-weight:800;
  box-shadow:0 6px 18px -4px rgba(99,102,241,.7);
}
.brand b{color:var(--ink);font-weight:700}
.brand b .acc{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;gap:2px;align-items:center}
.nav-links a{
  padding:8px 15px;border-radius:var(--r-full);
  color:var(--slate);font-size:14px;font-weight:500;transition:.2s;
}
.nav-links a:hover{color:var(--ink);background:var(--surface-soft)}
.nav-links a.active{color:#fff;background:var(--surface-soft);font-weight:600;box-shadow:inset 0 0 0 1px rgba(99,102,241,.4)}
.nav-cta{margin-left:12px}
.nav-toggle{display:none;background:var(--surface-soft);border:1px solid var(--hairline);color:var(--ink);
  border-radius:var(--r-full);padding:8px 16px;font-size:14px;cursor:pointer;font-family:inherit;font-weight:600}

/* ============================================================
   BUTTONS — 霓虹渐变主按钮
   ============================================================ */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 26px;border-radius:var(--r-full);
  font-size:14px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:.22s;font-family:inherit;line-height:1.4}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 30px -8px rgba(99,102,241,.65);background-size:160% 160%;background-position:0% 50%}
.btn-primary:hover{background-position:100% 50%;box-shadow:0 14px 38px -8px rgba(168,85,247,.7);transform:translateY(-2px)}
.btn-ghost{background:var(--surface);color:var(--ink);border:1px solid var(--hairline)}
.btn-ghost:hover{background:var(--surface-soft);border-color:rgba(99,102,241,.4);transform:translateY(-2px)}
.btn-secondary{background:transparent;color:var(--ink);border:1px solid var(--ink)}
.btn-secondary:hover{background:var(--surface-soft)}
.btn-tertiary{background:var(--surface-soft);color:var(--ink);border:1px solid var(--hairline)}
.btn-tertiary:hover{background:var(--surface)}
.btn-sm{padding:9px 19px;font-size:13px}

/* ============================================================
   HERO
   ============================================================ */
.hero{padding:104px 0 56px;text-align:center;position:relative}
.hero .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--blue-mid);
  background:var(--surface-soft);border:1px solid rgba(99,102,241,.3);border-radius:var(--r-full);
  padding:7px 17px;margin-bottom:26px;backdrop-filter:blur(6px)}
.hero .eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
.hero h1{font-size:clamp(40px,7vw,82px);line-height:1.08;font-weight:700;letter-spacing:-2px;color:var(--ink);font-family:var(--display)}
.hero h1 .accent{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  background-size:200% 200%;animation:gradientShift 6s ease infinite}
@keyframes gradientShift{0%,100%{background-position:0% 50%}50%{background-position:100% 50%}}
.hero p{margin:26px auto 0;max-width:680px;color:var(--slate);font-size:18px;font-weight:500;line-height:1.6}
.hero .cta{margin-top:38px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ============================================================
   STATS — 玻璃卡 + 霓虹数字
   ============================================================ */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:8px 0 4px}
.stat{background:var(--surface);border:1px solid var(--hairline);border-radius:var(--r-xl);
  padding:30px 20px;text-align:center;position:relative;overflow:hidden;backdrop-filter:blur(8px);
  transition:.3s}
.stat::before{content:"";position:absolute;inset:0;background:var(--grad-soft);opacity:0;transition:.3s}
.stat:hover{border-color:rgba(99,102,241,.4);transform:translateY(-4px);box-shadow:0 16px 40px -18px rgba(99,102,241,.6)}
.stat:hover::before{opacity:1}
.stat .num{font-family:var(--display);font-size:44px;font-weight:700;line-height:1.1;letter-spacing:-1px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;position:relative}
.stat .label{color:var(--slate);font-size:14px;margin-top:10px;font-weight:500;position:relative}

/* ============================================================
   TRACK MATRIX — 霓虹渐变卡
   ============================================================ */
.matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.track-card{
  position:relative;display:flex;flex-direction:column;justify-content:space-between;
  min-height:206px;border-radius:var(--r-hero);padding:30px;color:#fff;overflow:hidden;
  border:1px solid rgba(255,255,255,.12);transition:.3s;isolation:isolate;
}
.track-card::before{content:"";position:absolute;inset:0;z-index:-1;opacity:.92;transition:.4s;
  background:var(--tc,linear-gradient(135deg,#3b82f6,#6366f1))}
.track-card::after{content:"";position:absolute;inset:0;z-index:-1;opacity:.5;
  background:radial-gradient(120% 90% at 85% 0%,rgba(255,255,255,.28),transparent 55%)}
.track-card:hover{transform:translateY(-6px) scale(1.012);box-shadow:0 24px 60px -20px rgba(0,0,0,.7)}
.track-card:hover::before{filter:brightness(1.12) saturate(1.15)}
.track-card .t-name{font-family:var(--display);font-size:27px;font-weight:700;letter-spacing:-.5px}
.track-card .t-sub{font-size:14px;opacity:.9;margin-top:7px;font-weight:500}
.track-card .t-count{margin-top:22px;font-size:14px;font-weight:600;opacity:.96}
.track-card .t-badge{position:absolute;top:18px;right:18px;background:rgba(255,255,255,.92);color:#0a0a0a;
  font-size:12px;font-weight:700;border-radius:var(--r-full);padding:4px 11px}
.tk-cross{--tc:linear-gradient(135deg,#1d4ed8,#22d3ee)}
.tk-saas{--tc:linear-gradient(135deg,#ff5d3a,#fb923c)}
.tk-local{--tc:linear-gradient(135deg,#db2777,#e879f9)}
.tk-content{--tc:linear-gradient(135deg,#7c3aed,#a855f7)}
.tk-ecom{--tc:linear-gradient(135deg,#ea580c,#f59e0b)}
.tk-design{--tc:linear-gradient(135deg,#0891b2,#22d3ee)}

/* ============================================================
   SECTION
   ============================================================ */
.section{padding:64px 0}
.section-head{margin-bottom:34px}
.section-head h2{font-family:var(--display);font-size:clamp(26px,3vw,40px);font-weight:700;letter-spacing:-.6px;color:var(--ink);line-height:1.2}
.section-head h2 .accent{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.section-head p{color:var(--slate);margin-top:12px;font-size:16px;font-weight:500;max-width:640px}
.nowrap{white-space:nowrap}

/* ============================================================
   GRID + CARDS — 玻璃辉光
   ============================================================ */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px}
.card{background:var(--surface);border:1px solid var(--hairline);border-radius:var(--r-xl);
  padding:24px;transition:.26s;display:flex;flex-direction:column;gap:12px;height:100%;
  position:relative;overflow:hidden;backdrop-filter:blur(8px)}
.card::after{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;pointer-events:none;
  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:.26s}
.card:hover{transform:translateY(-6px);border-color:transparent;background:var(--surface-soft);
  box-shadow:0 22px 48px -22px rgba(99,102,241,.65)}
.card:hover::after{opacity:1}
.card h3{font-size:20px;font-weight:600;line-height:1.4;color:var(--ink);letter-spacing:-.2px}
.card .summary{color:var(--slate);font-size:14px;flex:1;line-height:1.55}
.card .meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:2px}
.card .row{display:flex;justify-content:space-between;align-items:center;font-size:14px;
  border-top:1px solid var(--hairline-soft);padding-top:14px;margin-top:6px;color:var(--slate)}
.card .row .mrr{font-family:var(--display);font-weight:700;color:var(--cyan);font-size:16px}

/* ============================================================
   PAGER
   ============================================================ */
.pager{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;margin-top:38px}
.pager .pg{font-family:inherit;font-size:14px;font-weight:600;color:var(--ink);background:var(--surface);
  border:1px solid var(--hairline);border-radius:var(--r-full);padding:9px 16px;cursor:pointer;transition:.18s}
.pager .pg:hover:not(:disabled){border-color:rgba(99,102,241,.5);background:var(--surface-soft);color:#fff}
.pager .pg.cur{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 8px 22px -8px rgba(99,102,241,.7)}
.pager .pg:disabled{opacity:.35;cursor:not-allowed}
.pager .pg-gap{color:var(--slate);padding:0 4px}
.pager .pg-info{margin-left:6px;font-size:13px;color:var(--slate);font-weight:500}

/* ============================================================
   TAGS
   ============================================================ */
.tag{display:inline-flex;align-items:center;font-size:12px;font-weight:600;padding:4px 11px;border-radius:var(--r-full);
  background:var(--surface-soft);color:var(--slate);border:1px solid var(--hairline)}
.tag.purple{background:rgba(99,102,241,.16);color:var(--blue-mid);border-color:transparent}
.tag.muted{background:var(--surface-soft);color:var(--steel);border-color:transparent}
.tag.green{background:var(--success-bg);color:var(--success-text);border-color:transparent}
.tag-track.tk-cross{background:rgba(34,211,238,.14);color:var(--cyan);border-color:rgba(34,211,238,.3)}
.tag-track.tk-saas{background:rgba(255,93,58,.14);color:#ff7a5c;border-color:rgba(255,93,58,.3)}
.tag-track.tk-local{background:rgba(232,121,249,.14);color:var(--magenta);border-color:rgba(232,121,249,.3)}
.tag-track.tk-content{background:rgba(168,85,247,.14);color:#c084fc;border-color:rgba(168,85,247,.3)}
.tag-track.tk-ecom{background:rgba(251,146,60,.14);color:#fb923c;border-color:rgba(251,146,60,.3)}
.tag-track.tk-design{background:rgba(34,211,238,.14);color:var(--cyan);border-color:rgba(34,211,238,.3)}

/* ============================================================
   FILTERS
   ============================================================ */
.filters{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-bottom:30px;
  background:var(--surface);border:1px solid var(--hairline);border-radius:var(--r-xl);padding:18px;backdrop-filter:blur(8px)}
.filters select,.filters input{background:var(--canvas-2);color:var(--ink);
  border:1px solid var(--hairline);border-radius:var(--r-md);padding:10px 12px;font-size:14px;font-family:inherit}
.filters input:focus,.filters select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(99,102,241,.25);padding:10px 12px}
.filters input{flex:1;min-width:220px}
.filters input::placeholder{color:var(--muted)}
.filters label{color:var(--slate);font-size:13px;font-weight:500;margin-right:-6px}

/* ============================================================
   TRACK CLOUD / PILL TABS
   ============================================================ */
.track-cloud{display:flex;flex-wrap:wrap;gap:12px}
.track-pill{background:var(--surface);color:var(--slate);border:1px solid var(--hairline);
  border-radius:var(--r-full);padding:10px 18px;font-size:14px;font-weight:500;transition:.2s;backdrop-filter:blur(6px)}
.track-pill:hover{border-color:rgba(99,102,241,.5);color:var(--ink);background:var(--surface-soft)}
.track-pill b{color:var(--cyan);margin-left:6px;font-weight:700;font-family:var(--display)}

/* ============================================================
   DETAIL
   ============================================================ */
.detail{max-width:820px;margin:0 auto}
.detail .back{color:var(--slate);font-size:14px;margin-bottom:18px;display:inline-block;font-weight:500}
.detail .back:hover{color:var(--ink)}
.detail h1{font-family:var(--display);font-size:clamp(28px,4vw,42px);font-weight:700;letter-spacing:-.6px;color:var(--ink);line-height:1.15}
.detail .lead{color:var(--slate);font-size:17px;margin-top:12px;font-weight:500}
.detail .facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin:30px 0}
.fact{background:var(--surface);border:1px solid var(--hairline);border-radius:var(--r-lg);padding:18px;backdrop-filter:blur(8px)}
.fact .k{color:var(--slate);font-size:12px;font-weight:600;letter-spacing:.3px}
.fact .v{font-size:16px;font-weight:600;margin-top:6px;color:var(--ink);font-family:var(--display)}
.detail .block{margin-top:30px}
.detail .block h2{font-family:var(--display);font-size:22px;margin-bottom:12px;color:var(--ink);font-weight:700;letter-spacing:-.3px}
.detail .block p{color:var(--charcoal);font-size:16px;line-height:1.7}
.detail .stack-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}

/* ============================================================
   TOOLS
   ============================================================ */
.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(248px,1fr));gap:14px}
.tool{background:var(--surface);border:1px solid var(--hairline);border-radius:var(--r-lg);padding:18px;
  transition:.24s;cursor:default;display:flex;flex-direction:column;backdrop-filter:blur(8px);position:relative;overflow:hidden}
.tool::after{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;pointer-events:none;
  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:.24s}
.tool:hover{border-color:transparent;transform:translateY(-3px);background:var(--surface-soft);
  box-shadow:0 18px 40px -22px rgba(99,102,241,.6)}
.tool:hover::after{opacity:1}
.tool-top{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:8px}
.tool .cat{font-size:12px;font-weight:600}
.tool .count{font-size:11px;font-weight:600;color:var(--slate);background:var(--surface-soft);border:1px solid var(--hairline);border-radius:999px;padding:2px 9px;white-space:nowrap}
.tool .name{font-family:var(--display);font-size:17px;font-weight:600;margin:0 0 4px;color:var(--ink)}
.tool .desc{font-size:13px;color:var(--slate);margin-bottom:10px}
.tool .how{font-size:12.5px;line-height:1.55;color:var(--ink);background:var(--surface-soft);border:1px solid var(--hairline);border-radius:10px;padding:9px 10px;margin-bottom:10px}
.tool .how b{color:var(--cyan)}
.tool .meta{display:flex;flex-direction:column;gap:3px;font-size:12px;color:var(--slate);margin-bottom:12px}
.tool-foot{display:flex;align-items:center;justify-content:space-between;gap:8px;border-top:1px solid var(--hairline);padding-top:11px;margin-top:auto}
.tool-go{font-size:12.5px;font-weight:600;color:var(--blue-mid);text-decoration:none}
.tool-go:hover{text-decoration:underline}
.tool-go.primary{background:var(--grad);color:#fff;border-radius:999px;padding:6px 12px}
.tool-go.primary:hover{opacity:.9;text-decoration:none}

/* ============================================================
   RESOURCE / 灵感地图
   ============================================================ */
.rc-1{--acc:var(--coral);--acc-bg:rgba(255,93,58,.12);--acc-bd:rgba(255,93,58,.32)}
.rc-2{--acc:var(--magenta);--acc-bg:rgba(232,121,249,.12);--acc-bd:rgba(232,121,249,.32)}
.rc-3{--acc:var(--blue);--acc-bg:rgba(59,130,246,.12);--acc-bd:rgba(59,130,246,.32)}
.rc-4{--acc:var(--purple);--acc-bg:rgba(168,85,247,.12);--acc-bd:rgba(168,85,247,.32)}

.res-filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.res-pill{background:var(--surface);color:var(--slate);border:1px solid var(--hairline);
  border-radius:var(--r-full);padding:9px 18px;font-size:14px;font-weight:600;cursor:pointer;
  transition:.2s;font-family:inherit;backdrop-filter:blur(6px)}
.res-pill:hover{border-color:rgba(99,102,241,.5);color:var(--ink)}
.res-pill.active{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 8px 22px -8px rgba(99,102,241,.7)}
.res-pill.rc-1.active{background:var(--coral);border-color:var(--coral)}
.res-pill.rc-2.active{background:var(--magenta);border-color:var(--magenta)}
.res-pill.rc-3.active{background:var(--blue);border-color:var(--blue)}
.res-pill.rc-4.active{background:var(--purple);border-color:var(--purple)}

.res-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(360px,1fr));gap:18px}
.res-card{background:var(--surface);border:1px solid var(--hairline);border-top:3px solid var(--acc);
  border-radius:var(--r-xl);padding:24px;transition:.26s;display:flex;flex-direction:column;gap:12px;
  backdrop-filter:blur(8px);position:relative;overflow:hidden}
.res-card::after{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;pointer-events:none;
  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:.26s}
.res-card:hover{border-color:var(--hairline);transform:translateY(-5px);background:var(--surface-soft);
  box-shadow:0 22px 48px -22px rgba(99,102,241,.6)}
.res-card:hover::after{opacity:1}
.res-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
.res-title{display:flex;flex-direction:column;gap:8px}
.res-badge{align-self:flex-start;font-size:12px;font-weight:700;padding:4px 11px;border-radius:var(--r-full);
  background:var(--acc-bg);color:var(--acc)}
.res-title h3{font-family:var(--display);font-size:21px;font-weight:700;letter-spacing:-.3px;color:var(--ink);line-height:1.25}
.res-tagline{font-size:15px;font-weight:600;color:var(--acc)}
.res-pos{color:var(--slate);font-size:14px;line-height:1.6;flex:1}
.res-detail{display:grid;gap:10px;background:var(--surface-soft);border:1px solid var(--hairline-soft);
  border-radius:var(--r-lg);padding:16px}
.res-pair{display:grid;grid-template-columns:72px 1fr;gap:12px;font-size:13.5px;line-height:1.55}
.res-pair .k{color:var(--slate);font-weight:700;flex-shrink:0}
.res-pair .v{color:var(--charcoal)}
.res-note{background:var(--acc-bg);border-left:3px solid var(--acc);border-radius:var(--r-md);
  padding:12px 14px;font-size:13.5px;color:var(--charcoal);line-height:1.6}
.res-note b{color:var(--acc)}
.res-visit{margin-top:2px;align-self:flex-start;font-size:14px;font-weight:600;color:var(--ink);
  border:1px solid var(--hairline);border-radius:var(--r-full);padding:8px 18px;transition:.2s}
.res-visit:hover{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 8px 22px -8px rgba(99,102,241,.7)}

/* ============================================================
   PLAYBOOKS
   ============================================================ */
.pb-methods{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:8px}
.pb-track{background:var(--surface);border:1px solid var(--hairline);border-left:3px solid var(--coral);border-radius:14px;padding:22px 22px 18px;backdrop-filter:blur(8px);transition:.24s}
.pb-track:hover{border-color:rgba(99,102,241,.35);background:var(--surface-soft);transform:translateY(-3px)}
.pb-track.tk-cross{border-left-color:var(--cyan)}
.pb-track.tk-saas{border-left-color:var(--coral)}
.pb-track.tk-local{border-left-color:var(--magenta)}
.pb-track.tk-content{border-left-color:var(--purple)}
.pb-track.tk-ecom{border-left-color:var(--orange)}
.pb-track.tk-design{border-left-color:var(--cyan)}
.pb-track-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.pb-tagline{font-size:12px;color:var(--muted);font-weight:600;letter-spacing:.02em}
.pb-intro{font-size:14px;line-height:1.7;color:var(--ink);margin:0 0 12px}
.pb-steps{margin:0 0 14px;padding-left:18px;color:var(--muted)}
.pb-steps li{font-size:13.5px;line-height:1.75;margin-bottom:6px}
.pb-cases{display:flex;flex-wrap:wrap;gap:8px}
.pb-case{font-size:12.5px;font-weight:600;color:var(--coral);background:rgba(255,93,58,.1);border:1px solid rgba(255,93,58,.25);padding:5px 10px;border-radius:999px;text-decoration:none;transition:.15s}
.pb-case:hover{background:rgba(255,93,58,.2)}
@media(max-width:860px){.pb-methods{grid-template-columns:1fr}}

/* ============================================================
   FOOTER
   ============================================================ */
#site-footer{border-top:1px solid var(--hairline);margin-top:84px;background:var(--footer-bg);color:#fff;padding:60px 0 38px;position:relative;overflow:hidden}
#site-footer::before{content:"";position:absolute;inset:0;opacity:.6;
  background:radial-gradient(60% 120% at 50% -20%,rgba(99,102,241,.18),transparent 60%)}
.foot-inner{position:relative;z-index:1}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.foot-grid h4{font-size:14px;margin-bottom:14px;color:#fff;font-weight:600;font-family:var(--display)}
.foot-grid a{display:block;color:var(--muted);font-size:13.5px;padding:5px 0;transition:.18s;font-weight:500}
.foot-grid a:hover{color:#fff}
.foot-brand .brand{color:#fff;margin-bottom:14px}
.foot-brand .brand .logo{background:var(--grad);color:#fff}
.foot-brand .brand b{color:#fff}
.foot-brand p{color:var(--muted);font-size:13.5px;max-width:300px;line-height:1.6;font-weight:500}
.foot-bottom{border-top:1px solid rgba(255,255,255,.08);margin-top:36px;padding-top:22px;
  color:var(--muted);font-size:13px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;font-weight:500}

/* ============================================================
   MISC
   ============================================================ */
.empty{color:var(--slate);text-align:center;padding:50px 0;grid-column:1/-1;font-size:15px}
.notice{background:var(--surface);border:1px solid var(--hairline);border-left:3px solid var(--coral);
  border-radius:var(--r-lg);padding:16px 18px;color:var(--slate);font-size:14px;margin-top:20px;line-height:1.6;backdrop-filter:blur(8px)}
.notice b{color:var(--ink)}
.notice a{color:var(--cyan);font-weight:600}

/* DETAIL ENHANCEMENTS */
.detail .verdict{display:flex;flex-wrap:wrap;align-items:center;gap:6px;background:var(--surface);
  border:1px solid var(--hairline);border-left:3px solid var(--coral);border-radius:var(--r-lg);
  padding:14px 16px;margin:22px 0;font-size:14.5px;font-weight:600;color:var(--ink);line-height:1.5;backdrop-filter:blur(8px)}
.timeline{position:relative;margin-top:6px;padding-left:22px}
.timeline::before{content:"";position:absolute;left:6px;top:4px;bottom:4px;width:2px;background:linear-gradient(var(--cyan),var(--purple))}
.tl-item{position:relative;padding:0 0 18px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{position:absolute;left:-22px;top:4px;width:12px;height:12px;border-radius:50%;
  background:var(--canvas);border:3px solid var(--coral);box-shadow:0 0 10px rgba(255,93,58,.6)}
.tl-when{font-size:12.5px;font-weight:700;color:var(--coral);letter-spacing:.2px;font-family:var(--display)}
.tl-what{font-size:15px;color:var(--charcoal);line-height:1.6;margin-top:2px}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.rel-grid .card{padding:18px}
.rel-grid .card h3{font-size:16px}
.rel-grid .card .summary{font-size:13px}
.detail .block.faq{background:var(--surface-soft);border:1px solid var(--hairline);border-radius:var(--r-xl);padding:22px 24px;margin-top:30px;backdrop-filter:blur(8px)}
.faq-list{display:flex;flex-direction:column;gap:14px;margin-top:6px}
.faq-item{border-bottom:1px solid var(--hairline);padding-bottom:14px}
.faq-item:last-child{border-bottom:none;padding-bottom:0}
.faq-q{font-size:15px;font-weight:600;color:var(--ink);line-height:1.5}
.faq-q::before{content:"Q · ";color:var(--coral);font-weight:700}
.faq-a{font-size:14.5px;color:var(--slate);line-height:1.65;margin-top:6px}
.faq-a::before{content:"A · ";color:var(--blue);font-weight:700}
.checklist{counter-reset:step;list-style:none;padding:0;margin-top:6px;display:flex;flex-direction:column;gap:10px}
.checklist li{counter-increment:step;position:relative;padding:12px 14px 12px 46px;background:var(--surface);
  border:1px solid var(--hairline);border-radius:var(--r-lg);font-size:14.5px;color:var(--charcoal);line-height:1.6}
.checklist li::before{content:counter(step);position:absolute;left:12px;top:50%;transform:translateY(-50%);
  width:24px;height:24px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;
  font-size:13px;font-weight:700}
.demand-meter{display:flex;align-items:center;gap:12px}
.demand-bar{height:12px;border-radius:999px;background:linear-gradient(90deg,var(--coral),var(--orange));min-width:10%}

/* ============================================================
   滚动揭示动效
   ============================================================ */
html.js-reveal .reveal{opacity:0;transform:translateY(26px);
  transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1);
  transition-delay:var(--rd,0ms)}
html.js-reveal .reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  html.js-reveal .reveal{opacity:1!important;transform:none!important;transition:none}
  body::before{animation:none}
  .hero h1 .accent{animation:none}
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media(max-width:1024px){
  .matrix{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:860px){
  .stats{grid-template-columns:repeat(2,1fr)}
  .nav-links{display:none;position:absolute;top:66px;left:0;right:0;flex-direction:column;align-items:stretch;
    background:rgba(8,11,20,.96);border-bottom:1px solid var(--hairline);padding:14px var(--gutter);gap:4px;backdrop-filter:blur(14px)}
  .nav-links.open{display:flex}
  .nav-links a{border-radius:var(--r-md);color:var(--slate)}
  .nav-cta{margin-left:0}
  .nav-toggle{display:block}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:560px){
  .matrix{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .hero{padding:68px 0 40px}
  .section{padding:48px 0}
  .nowrap{white-space:normal}
  .pager .pg-info{display:none}
  .rel-grid{grid-template-columns:1fr}
  .detail .verdict{font-size:13.5px}
}