/* ============ 可寻 GEO · promo (light) ============ */
:root{
  --paper:#F7F4ED;
  --paper-2:#FCFAF5;
  --surface:#FFFFFF;
  --ink:#111715;
  --ink-2:#2C3834;
  --muted:#5E6C66;
  --green:#0B7A52;
  --green-bright:#12B981;
  --mint:#E9F6EF;
  --mint-2:#D8EFE4;
  --line:rgba(17,23,21,.10);
  --line-2:rgba(17,23,21,.17);
  --r:14px;
  --maxw:1180px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --shadow:0 18px 50px -28px rgba(17,23,21,.35);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font);
  font-size:16px;line-height:1.72;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3{margin:0;font-weight:600;letter-spacing:-.02em;line-height:1.16}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding-inline:clamp(20px,5vw,48px)}
.i{width:20px;height:20px;flex:none;stroke-width:1.7;display:inline-block;vertical-align:-3px}

/* nav */
.nav{position:fixed;inset:0 0 auto 0;z-index:60;height:64px;display:flex;align-items:center;
  border-bottom:1px solid transparent;transition:background .3s,border-color .3s,backdrop-filter .3s}
.nav-inner{display:flex;align-items:center;gap:24px;width:100%}
.nav.on{background:rgba(247,244,237,.86);backdrop-filter:blur(14px) saturate(140%);border-bottom-color:var(--line)}
.brand{display:flex;align-items:center;gap:9px;font-size:15px;font-weight:600}
.brand-mark{display:grid;place-items:center;width:30px;height:30px;border-radius:9px;
  background:var(--green);color:#fff}
.brand-mark .i{width:16px;height:16px}
.brand-txt em{font-style:normal;color:var(--muted);font-size:12.5px;letter-spacing:.16em;margin-left:5px;font-weight:400}
.nav-links{display:flex;gap:26px;margin-left:auto;font-size:14px;color:var(--ink-2)}
.nav-links a{padding:4px 0;transition:color .2s}
.nav-links a:hover{color:var(--green)}
.nav-cta{font-size:13.5px;padding:9px 16px;border-radius:999px;border:1px solid rgba(11,122,82,.4);
  color:var(--green);background:var(--surface);transition:border-color .2s,color .2s,box-shadow .2s}
.nav-cta:hover{border-color:var(--green);color:var(--green);box-shadow:var(--shadow)}

/* hero */
.hero{position:relative;display:flex;align-items:center;min-height:100svh;
  padding-top:104px;padding-bottom:clamp(40px,4vw,56px);overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0;background-image:url("assets/light/hero.jpg");
  background-size:cover;background-position:76% 50%;background-repeat:no-repeat}
.hero-bg::after{content:"";position:absolute;inset:0;
  background:
    linear-gradient(rgba(247,244,237,.34),rgba(247,244,237,.34)),
    linear-gradient(90deg,var(--paper) 0%,rgba(247,244,237,.96) 38%,rgba(247,244,237,.58) 66%,rgba(247,244,237,.16) 100%),
    linear-gradient(180deg,var(--paper) 0%,rgba(247,244,237,0) 18%,rgba(247,244,237,0) 72%,var(--paper) 100%)}
.hero-inner{position:relative;z-index:1}
.hero h1{max-width:820px}
.eyebrow{display:flex;align-items:center;gap:9px;font-size:12.5px;letter-spacing:.2em;
  color:var(--green);text-transform:uppercase;margin-bottom:22px;font-weight:500}
.dot{width:6px;height:6px;border-radius:50%;background:var(--green-bright);box-shadow:0 0 0 4px rgba(18,185,129,.18)}
.hero h1{font-size:clamp(36px,5.4vw,64px);line-height:1.1;letter-spacing:-.03em}
.hero h1 .hl{color:var(--green)}
.lede{margin-top:20px;font-size:clamp(15px,1.5vw,17px);color:var(--ink-2);max-width:600px;line-height:1.8;text-wrap:pretty}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:14px 22px;
  border-radius:999px;font-size:15px;font-weight:500;border:1px solid transparent;
  transition:transform .18s,background .2s,border-color .2s,color .2s,box-shadow .2s}
.btn .i{width:17px;height:17px;transition:transform .2s}
.btn-primary{background:var(--green);color:#fff;font-weight:600;box-shadow:0 12px 28px -14px rgba(11,122,82,.7)}
.btn-primary:hover{transform:translateY(-2px);background:#0A6B48}
.btn-primary:hover .i{transform:translateX(3px)}
.btn-ghost{border-color:transparent;color:var(--ink-2);background:transparent;padding-inline:10px}
.btn-ghost:hover{color:var(--green)}
.btn-ghost .i{width:16px;height:16px}
.btn.full{width:100%}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:clamp(30px,3.6vw,44px);
  padding-top:24px;border-top:1px solid var(--line-2)}
.hero-stats li b{display:block;font-size:clamp(26px,3vw,36px);font-weight:600;letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;color:var(--ink)}
.hero-stats li span{font-size:13px;color:var(--ink-2);letter-spacing:.04em}

/* sections */
.sec{padding-block:clamp(36px,3.9vw,56px);position:relative}
.sec-alt{background:var(--paper-2);border-block:1px solid var(--line);overflow:hidden}
.sec-alt::before{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:url("assets/light/data.jpg") center/cover no-repeat;opacity:.2;filter:blur(1.5px) saturate(.85)}
.sec-alt > .wrap{position:relative;z-index:1}
.sec-head{max-width:820px;margin-bottom:clamp(22px,2.6vw,32px)}
.sec-head h2,.grid-2 h2{font-size:clamp(26px,3.5vw,44px);letter-spacing:-.025em;text-wrap:balance}
.sec-head h2 b,.grid-2 h2 b{color:var(--green);font-weight:600}
.body{margin-top:20px;color:var(--ink-2);font-size:16px;line-height:1.82;text-wrap:pretty}
.body.narrow{max-width:620px}
.grid-2{display:grid;grid-template-columns:1.02fr .98fr;gap:clamp(28px,4.6vw,64px);align-items:center}
.pos-rel{position:relative;z-index:2;align-items:start}

/* terminal (dark artifact on light page) */
.term{background:#0E1614;border:1px solid #0E1614;border-radius:var(--r);overflow:hidden;
  box-shadow:0 30px 70px -34px rgba(17,23,21,.55)}
.term-bar{display:flex;align-items:center;gap:7px;padding:11px 14px;border-bottom:1px solid rgba(255,255,255,.08)}
.tl{width:8px;height:8px;border-radius:50%;background:#2C3A37}
.tl:first-child{background:#3A4B47}
.term-bar em{margin-left:auto;font:400 12.5px/1 var(--mono);color:#7C8F89;font-style:normal}
.term-body{padding:18px 16px 16px;font-family:var(--mono);font-size:12.5px;line-height:1.85;color:#C3CFCA}
.term-body .q{color:#F2F6F4;margin-bottom:14px}
.term-body .me{display:inline-block;margin-right:8px;padding:1px 6px;border-radius:4px;
  background:rgba(18,185,129,.2);color:#4FE0A6;font-size:12.5px}
.term-body .ai{display:inline-block;margin-right:8px;padding:1px 6px;border-radius:4px;
  background:rgba(255,255,255,.1);color:#9FB3AD;font-size:12.5px}
.term-body .a{margin-bottom:9px;color:#AEBDB7}
.term-body .a.li{display:flex;flex-direction:column;gap:1px;padding:9px 11px;border-left:2px solid #12B981;
  background:rgba(255,255,255,.04);border-radius:0 6px 6px 0}
.term-body .a.li b{color:#F2F6F4;font-weight:600;font-size:12.5px}
.term-body .a.li i{font-style:normal;color:#7F8F8A;font-size:12.5px}
.term-body .a.dim{color:#6E807A}
.verdict{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:14px;
  padding:10px 12px;border-radius:8px;border:1px dashed rgba(79,224,166,.5);
  background:rgba(18,185,129,.1);color:#4FE0A6;font-size:12.5px}
.verdict .i{width:16px;height:16px}
.quote-note{display:flex;gap:10px;align-items:flex-start;margin-top:26px;padding:14px 16px;
  border-left:2px solid var(--green-bright);background:var(--mint);border-radius:0 10px 10px 0;
  font-size:13.5px;color:var(--ink-2)}
.quote-note .i{color:var(--green);margin-top:2px}

/* figure */
.wide-fig{margin:clamp(24px,3vw,38px) 0 0}
.wide-fig img{border-radius:var(--r);border:1px solid var(--line);width:100%;max-height:400px;object-fit:cover;object-position:center 42%;background:var(--surface)}
.wide-fig figcaption{margin-top:14px;font-size:13px;color:var(--muted);max-width:720px;line-height:1.75}

/* cards */
.cards-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.card{position:relative;display:flex;flex-direction:column;padding:24px 20px 20px;border:1px solid var(--line);
  border-radius:var(--r);background:var(--surface);transition:border-color .25s,transform .25s,box-shadow .25s}
.card:hover{border-color:rgba(11,122,82,.35);transform:translateY(-3px);box-shadow:var(--shadow)}
.card-ico{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;
  background:var(--mint);color:var(--green);margin-bottom:18px}
.card-ico .i{width:19px;height:19px}
.card h3{font-size:18px;margin-bottom:9px;letter-spacing:0}
.card p{font-size:13.5px;color:var(--muted);line-height:1.78;margin-bottom:18px}
.card p em{color:var(--ink);font-style:normal;border-bottom:1px solid rgba(18,185,129,.55)}
.tag{display:inline-block;align-self:flex-start;margin-top:auto;padding:3px 9px;border-radius:6px;
  font-size:12.5px;letter-spacing:.04em;color:var(--green);background:var(--mint)}

/* steps */
.steps{margin-top:8px;border-top:1px solid var(--line-2)}
.steps li{display:grid;grid-template-columns:74px 1fr auto;gap:clamp(12px,2vw,28px);align-items:center;
  padding:clamp(16px,2vw,22px) 0;border-bottom:1px solid var(--line);transition:background .25s}
.steps li:hover{background:linear-gradient(90deg,rgba(18,185,129,.07),transparent 62%)}
.steps .num{font:600 13px/1.2 var(--mono);color:var(--green);letter-spacing:.08em;padding-top:5px}
.steps h3{font-size:clamp(18px,2vw,22px);letter-spacing:-.01em}
.steps h3 em{font-style:normal;font-size:12.5px;color:var(--muted);letter-spacing:.06em;margin-left:10px;
  padding:2px 8px;border:1px solid var(--line-2);border-radius:5px;vertical-align:2px}
.steps p{margin-top:9px;font-size:14.5px;color:var(--ink-2);max-width:620px;line-height:1.78}
.steps .out em{display:block;font-style:normal;font-size:12.5px;color:var(--muted);letter-spacing:.12em;margin-bottom:3px}
.steps .out{font-size:13px;color:var(--green);letter-spacing:.04em;line-height:1.6;text-align:right;
  padding:10px 14px;border:1px solid rgba(11,122,82,.22);border-radius:8px;background:var(--mint);
  min-width:124px;white-space:nowrap}

/* proof */
.sec-proof{background:
  radial-gradient(760px 380px at 84% 10%,rgba(18,185,129,.14),transparent 62%),
  var(--paper);
  border-top:1px solid var(--line)}
.check-list{margin-top:26px;display:grid;gap:14px}
.check-list li{display:flex;gap:11px;align-items:flex-start;font-size:14px;color:var(--muted);line-height:1.72}
.check-list .i{color:var(--green);margin-top:3px;width:17px;height:17px}
.check-list b{color:var(--ink);font-weight:600;margin-right:6px}
.score-card{padding:clamp(20px,2.6vw,26px);border:1px solid var(--line);border-radius:18px;
  background:var(--surface);box-shadow:var(--shadow)}
.score-head{display:flex;justify-content:space-between;align-items:baseline;font-size:13px;color:var(--ink-2)}
.score-head em{font-style:normal;font:400 12.5px/1 var(--mono);color:var(--muted)}
.score-row{display:grid;grid-template-columns:60px 1fr 34px;align-items:center;gap:12px;margin-top:22px}
.score-label{font-size:12.5px;color:var(--muted)}
.bar{height:8px;border-radius:99px;background:#E7E8E2;overflow:hidden}
.bar i{display:block;height:100%;width:0;border-radius:99px;
  background:linear-gradient(90deg,#9FBDB0,#5E8B7C);transition:width 1.1s cubic-bezier(.22,.8,.2,1)}
.bar-hi i{background:linear-gradient(90deg,var(--green),var(--green-bright))}
.score-row b{font-size:15px;text-align:right;font-variant-numeric:tabular-nums;color:var(--ink)}
.score-row b.hi{color:var(--green)}
.score-grid{display:grid;grid-template-columns:1fr;gap:0;margin-top:20px;padding-top:8px;border-top:1px solid var(--line)}
.score-grid span{display:flex;justify-content:space-between;gap:8px;font-size:12.5px;color:var(--muted);
  padding:9px 0;border-bottom:1px dashed var(--line)}
.score-grid span:last-child{border-bottom:0}
.score-grid em{font-style:normal}
.score-grid b{color:var(--ink);font-variant-numeric:tabular-nums}
.score-foot{margin-top:18px;font-size:13px;color:var(--ink-2);line-height:1.72}
.score-foot b{color:var(--ink);font-weight:600}
.monitor{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(20px,4vw,44px);align-items:center;
  margin-top:clamp(26px,3vw,40px);padding:clamp(20px,3vw,32px);border-radius:18px;background:#0E1614;
  color:#EBF1EE}
.monitor h3{font-size:clamp(18px,2vw,22px);color:#fff}
.monitor p{margin-top:12px;font-size:13.5px;color:#A7B6B0;line-height:1.78}
.monitor-code{margin:0;padding:16px;border-radius:10px;background:#0A1211;border:1px solid rgba(255,255,255,.08);overflow-x:auto}
.monitor-code code{font:400 12.5px/1.95 var(--mono);color:#A9BAB4;white-space:pre}

/* pricing */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;align-items:stretch}
.plan{position:relative;height:100%;padding:26px 22px 22px;border:1px solid var(--line);border-radius:var(--r);
  background:var(--surface);display:flex;flex-direction:column}
.plan-hi{border-color:rgba(11,122,82,.4);background:linear-gradient(180deg,#F1FAF5,#FFFFFF);
  box-shadow:0 22px 55px -34px rgba(11,122,82,.55)}
.badge{position:absolute;top:-11px;left:22px;padding:3px 10px;border-radius:99px;font-size:12.5px;
  background:var(--green);color:#fff;font-weight:600}
.plan h3{font-size:16px;color:var(--ink-2);font-weight:500;letter-spacing:0}
.price{margin-top:14px;font-size:clamp(30px,3.4vw,40px);font-weight:600;letter-spacing:-.03em;
  font-variant-numeric:tabular-nums;line-height:1.1}
.price em{font-style:normal;font-size:19px;color:var(--muted);margin-right:2px;vertical-align:6px}
.price span{font-size:13px;color:var(--muted);font-weight:400;margin-left:7px;letter-spacing:0}
.plan-sub{margin-top:10px;font-size:13px;color:var(--muted);line-height:1.7;min-height:66px}
.plan ul{margin:20px 0 22px;display:grid;gap:9px}
.plan ul li{position:relative;padding-left:18px;font-size:13.5px;color:var(--ink-2);line-height:1.6}
.plan ul li::before{content:"";position:absolute;left:2px;top:8px;width:6px;height:6px;border-radius:2px;
  background:var(--green-bright)}
.plan .btn{margin-top:auto}
.price-foot{margin-top:22px;font-size:13.5px;color:var(--ink-2);line-height:1.8;max-width:840px;text-wrap:pretty}
.price-foot b{color:var(--ink);font-weight:600}

/* cta */
.cta-sec{background:
  radial-gradient(700px 380px at 12% 26%,rgba(18,185,129,.13),transparent 60%),
  var(--paper-2);border-top:1px solid var(--line)}
.cta-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(30px,5vw,64px);align-items:center}
.cta-inner h2{font-size:clamp(28px,4.6vw,54px)}
.wx{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:30px}
.wx-label{font-size:12.5px;letter-spacing:.16em;color:var(--muted)}
.wx-num{display:inline-flex;align-items:center;gap:10px;padding:12px 18px;border-radius:999px;
  background:var(--surface);border:1px solid rgba(11,122,82,.3);color:var(--green);cursor:pointer;
  transition:background .2s,border-color .2s,box-shadow .2s}
.wx-num span{font:600 20px/1 var(--mono);letter-spacing:.06em}
.wx-num:hover{background:var(--mint);border-color:var(--green);box-shadow:var(--shadow)}
.wx-num .i{width:16px;height:16px}
.wx-tip{font-size:12.5px;color:var(--muted)}
.cta-fig{margin:0;position:relative;border-radius:var(--r);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow)}
.cta-fig img{border-radius:0}
.cta-fig figcaption{margin-top:10px;font-size:12.5px;color:var(--muted)}
.cta-fig + figcaption{}

/* footer */
.foot{border-top:1px solid var(--line);padding-block:24px;background:var(--paper)}
.foot-inner{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:var(--muted)}
.foot-meta a{color:var(--green);border-bottom:1px solid rgba(11,122,82,.3)}

/* reveal */
[data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .7s ease,transform .7s cubic-bezier(.22,.8,.2,1)}
[data-reveal].in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  [data-reveal]{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .bar i{transition:none}
}

/* responsive */
@media (max-width:1000px){
  .cards-4{grid-template-columns:repeat(2,1fr)}
  .plans{grid-template-columns:1fr;max-width:560px;margin-inline:auto}
  .plan-hi{order:-1}
}
@media (max-width:860px){
  .nav-links{display:none}
  .nav-cta{margin-left:auto}
  .hero{padding-top:112px}
  .hero-bg{background-position:68% 50%}
  .hero-bg::after{background:
    linear-gradient(180deg,rgba(247,244,237,.97) 0%,rgba(247,244,237,.9) 46%,rgba(247,244,237,.96) 100%)}
  .grid-2,.monitor,.cta-inner{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:20px 16px}
  .monitor-code code{font-size:12.5px}
}
@media (max-width:520px){
  body{font-size:15px}
  .cards-4{grid-template-columns:1fr}
  .steps li{grid-template-columns:44px 1fr}
  .steps .out{grid-column:2;text-align:left;min-width:0;justify-self:start;margin-top:10px;white-space:normal}
  .score-row{grid-template-columns:52px 1fr 28px;gap:9px}
  .term-body{font-size:12.5px}
  .wx-num span{font-size:18px}
  .monitor-code code{white-space:pre-wrap}
  .hero-actions{width:100%;gap:14px}
  .hero-actions .btn{width:100%}
  .hero-actions .btn-ghost{width:auto;justify-content:flex-start;padding-inline:2px}
  .nav-cta{padding:11px 18px}
  .plan-sub{min-height:0}
  .foot-inner{flex-direction:column;gap:8px}
}