:root{--ink:#071a17;--ink-2:#102d28;--paper:#f5f2ea;--white:#fffdf8;--sage:#397d6c;--mint:#8ec4b3;--ember:#ef7341;--brass:#c9a65f;--line:#d7d4ca;--muted:#5f6d68;--display:"Songti SC","STSong","Noto Serif SC",serif;--body:"PingFang SC","Microsoft YaHei",sans-serif;--mono:"SFMono-Regular",Consolas,monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}a:focus-visible{outline:3px solid var(--ember);outline-offset:4px}img{display:block;max-width:100%}::selection{background:var(--ember);color:white}
.site-nav{height:76px;padding:0 clamp(24px,5vw,78px);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:rgba(245,242,234,.94);backdrop-filter:blur(18px);position:sticky;top:0;z-index:20}.brand{display:flex;align-items:center;gap:18px}.brand img{width:142px}.brand span{padding-left:18px;border-left:1px solid #bfc2b8;font-size:13px;letter-spacing:.16em}.site-nav nav{display:flex;gap:34px;font-size:14px}.site-nav nav a{position:relative}.site-nav nav a:after{content:"";position:absolute;left:0;right:100%;bottom:-8px;height:2px;background:var(--ember);transition:.25s}.site-nav nav a:hover:after{right:0}.nav-cta{font-size:14px;font-weight:700}.nav-cta b{display:inline-grid;place-items:center;width:34px;height:34px;margin-left:8px;border-radius:50%;background:var(--ink);color:white}
.hero{min-height:calc(100vh - 76px);display:grid;grid-template-columns:minmax(0,46%) minmax(0,54%);border-bottom:1px solid var(--line)}.hero-copy{padding:clamp(70px,8vw,126px) clamp(34px,6vw,96px);display:flex;flex-direction:column;justify-content:center}.eyebrow{display:flex;align-items:center;gap:12px;margin:0 0 24px;font:700 11px/1.4 var(--mono);letter-spacing:.19em;color:var(--sage)}.eyebrow i{width:34px;height:2px;background:var(--ember)}.eyebrow.light{color:#9ed3c2}.hero h1,.section h2,.feilan h2,.join h2{font-family:var(--display);font-weight:600;letter-spacing:-.055em}.hero h1{max-width:760px;margin:0;font-size:clamp(52px,5.1vw,82px);line-height:1.06}.hero h1 em,.section h2 em,.feilan h2 em,.join h2 em{display:block;color:var(--sage);font-style:normal}.hero-lead{max-width:690px;margin:34px 0 0;color:#53625d;font-size:17px;line-height:2}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:34px 0}.button{min-height:54px;padding:0 24px;display:inline-flex;align-items:center;justify-content:center;gap:24px;border:1px solid var(--ink);font-size:14px;font-weight:700;transition:transform .25s,box-shadow .25s,background .25s}.button:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(7,26,23,.12)}.button.primary{background:var(--ink);color:white}.button.secondary{background:transparent}.button.warm{background:var(--brass);border-color:var(--brass);color:var(--ink)}.hero blockquote{margin:8px 0 0;padding:18px 0 0;border-top:2px solid var(--ember);max-width:660px;font-family:var(--display);font-size:20px;line-height:1.75;color:#203f37}
.signal-map{position:relative;min-height:680px;overflow:hidden;background:var(--ink)}.signal-map>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 30%;filter:saturate(.72) contrast(1.05)}.map-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,26,23,.3),rgba(7,26,23,.83) 76%),linear-gradient(0deg,rgba(7,26,23,.78),transparent 55%)}.map-grid{position:absolute;inset:0;opacity:.2;background-image:linear-gradient(rgba(142,196,179,.22) 1px,transparent 1px),linear-gradient(90deg,rgba(142,196,179,.22) 1px,transparent 1px);background-size:72px 72px;mask-image:linear-gradient(to bottom,black,transparent 88%)}.map-label{position:absolute;top:38px;left:42px;color:#bce3d6;font:700 10px var(--mono);letter-spacing:.17em}.live-dot{display:inline-block;width:8px;height:8px;margin-right:9px;border-radius:50%;background:var(--ember);box-shadow:0 0 0 6px rgba(239,115,65,.16);animation:pulse 2s infinite}.node{position:absolute;width:190px;padding:17px 18px;border:1px solid rgba(158,211,194,.36);background:rgba(7,26,23,.76);color:white;backdrop-filter:blur(8px)}.node:after{content:"";position:absolute;height:1px;background:linear-gradient(90deg,var(--mint),transparent)}.node small{display:block;margin-bottom:9px;color:#8ec4b3;font:700 9px var(--mono);letter-spacing:.16em}.node b{display:block;font-family:var(--display);font-size:20px}.node span{display:block;margin-top:7px;color:#afc2bb;font-size:11px}.owner{left:7%;top:23%}.owner:after{width:92px;right:-92px;top:50%}.feilan-node{left:42%;top:42%;border-color:var(--ember);box-shadow:0 0 32px rgba(239,115,65,.14)}.feilan-node:after{width:120px;right:-120px;top:50%}.fde{right:5%;top:20%}.fde:after{width:85px;left:-85px;top:70%;transform:rotate(-22deg);transform-origin:right}.field{right:8%;bottom:20%}.field:after{width:105px;left:-105px;top:30%}.map-caption{position:absolute;left:42px;bottom:38px;color:white}.map-caption small{display:block;color:#9ab1aa;font:600 10px var(--mono);letter-spacing:.14em}.map-caption strong{display:block;margin-top:8px;font-family:var(--display);font-size:24px}.section{padding:clamp(80px,9vw,138px) clamp(24px,6vw,90px)}.section-head{display:flex;justify-content:space-between;align-items:end;gap:50px;margin-bottom:48px}.section-head h2{margin:0;font-size:clamp(44px,5vw,72px);line-height:1.05}.section-head>p{max-width:470px;margin:0;color:var(--muted);font-size:15px;line-height:1.9}.section-head.compact{margin-bottom:38px}
.live-board{background:var(--white)}.case-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr;border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}.case-card{min-height:430px;padding:30px;display:flex;flex-direction:column;border-right:1px solid var(--line);transition:background .25s,transform .25s}.case-card:last-child{border-right:0}.case-card:hover{background:#edf1ea;transform:translateY(-4px)}.case-card.featured{background:var(--ink);color:white}.case-card.featured:hover{background:var(--ink-2)}.case-top{display:flex;align-items:center;justify-content:space-between;gap:14px}.case-top>span{font:700 11px var(--mono);letter-spacing:.12em;text-transform:uppercase}.case-top small{color:var(--muted);font-size:11px}.featured .case-top small{color:#a8beb6}.case-top small i{display:inline-block;width:7px;height:7px;margin-right:7px;border-radius:50%;background:var(--ember)}.case-card h3{margin:48px 0 18px;font-family:var(--display);font-size:32px;line-height:1.35}.case-card>p{min-height:92px;margin:0;color:var(--muted);font-size:14px;line-height:1.8}.case-answer{color:var(--sage)}.featured>p{color:#b6c8c1}.featured .case-answer{color:var(--mint)}.case-card dl{margin:auto 0 24px}.case-card dl div{display:grid;grid-template-columns:74px 1fr;gap:12px;padding:10px 0;border-top:1px solid rgba(95,109,104,.25);font-size:12px}.case-card dt{color:var(--muted)}.featured dt{color:#8fa8a0}.case-card dd{margin:0}.case-card footer{display:flex;justify-content:space-between;font-size:13px;font-weight:700}.text-link{display:inline-block;margin-top:30px;border-bottom:1px solid var(--ink);font-size:13px;font-weight:700;padding-bottom:4px}
.feilan{display:grid;grid-template-columns:43% 57%;background:var(--ink);color:white}.feilan-portrait{position:relative;min-height:760px}.feilan-portrait>img{width:100%;height:100%;object-fit:cover;object-position:center top;filter:saturate(.74)}.feilan-portrait:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(7,26,23,.6),transparent 55%)}.portrait-stamp{position:absolute;z-index:2;left:34px;bottom:34px;display:flex;align-items:center;gap:14px}.portrait-stamp span{font-family:var(--display);font-size:40px}.portrait-stamp small{padding-left:14px;border-left:1px solid rgba(255,255,255,.35);font:700 9px var(--mono);letter-spacing:.15em;color:#b5cbc4}.feilan-copy{padding:clamp(72px,8vw,126px) clamp(32px,7vw,110px);display:flex;flex-direction:column;justify-content:center}.feilan h2{margin:0;font-size:clamp(46px,5vw,74px);line-height:1.08}.feilan h2 em{color:var(--brass)}.feilan-lead{max-width:700px;margin:28px 0 36px;color:#b4c6c0;font-size:16px;line-height:2}.translation-line{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid rgba(255,255,255,.18);border-bottom:1px solid rgba(255,255,255,.18)}.translation-line article{padding:24px 18px 24px 0}.translation-line small{color:var(--ember);font:700 9px var(--mono)}.translation-line b{display:block;margin:8px 0;font-family:var(--display);font-size:22px}.translation-line span{color:#94aaa3;font-size:12px;line-height:1.6}.feilan-status{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:26px 0}.feilan-status div{padding:14px 16px;background:rgba(255,255,255,.05)}.feilan-status b,.feilan-status span{display:block}.feilan-status b{color:var(--mint);font-size:11px}.feilan-status div:last-child b{color:#b7aaa0}.feilan-status span{margin-top:6px;color:#c7d4d0;font-size:12px}.feilan-links{display:flex;align-items:center;gap:24px}.feilan-links>a:last-child{font-size:13px;color:#c0d1cb;border-bottom:1px solid #728980;padding-bottom:4px}
.method{background:#ece9df}.method-line{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}.method-line li{position:relative;display:flex;gap:18px;min-height:180px;padding:28px 24px 28px 0;border-right:1px solid var(--line)}.method-line li:not(:first-child){padding-left:24px}.method-line li:last-child{border-right:0}.method-line li>span{color:var(--ember);font:700 10px var(--mono)}.method-line b{font-family:var(--display);font-size:21px}.method-line p{margin:12px 0 0;color:var(--muted);font-size:13px;line-height:1.7}.truth-note{margin:24px 0 0;color:var(--muted);font-size:12px}.truth-note b{color:var(--ink)}
.join{position:relative;display:grid;grid-template-columns:1.2fr .8fr;gap:clamp(50px,8vw,130px);background:var(--ink);color:white;overflow:hidden}.join:before{content:"";position:absolute;width:520px;height:520px;border:1px solid rgba(142,196,179,.15);border-radius:50%;right:-180px;top:-260px;box-shadow:0 0 0 70px rgba(142,196,179,.03),0 0 0 140px rgba(142,196,179,.025)}.join h2{margin:0;font-size:clamp(48px,5.5vw,78px);line-height:1.08}.join h2 em{color:var(--brass)}.join-copy>p:last-child{max-width:680px;color:#aebfba;font-size:14px;line-height:1.9}.join-options{display:flex;flex-wrap:wrap;gap:8px;margin:30px 0}.join-options span{padding:10px 13px;border:1px solid rgba(255,255,255,.19);font-size:12px}.qr-card{position:relative;z-index:1;align-self:center;padding:18px;background:var(--white);color:var(--ink);display:grid;grid-template-columns:180px 1fr;gap:20px;align-items:center;transform:rotate(1.3deg);box-shadow:18px 22px 0 rgba(239,115,65,.18)}.qr-card img{width:180px}.qr-card small,.qr-card b,.qr-card span{display:block}.qr-card small{font:700 9px var(--mono);letter-spacing:.12em;color:var(--sage)}.qr-card b{margin:14px 0;font-family:var(--display);font-size:26px}.qr-card span{font-size:11px;color:var(--muted)}.join-boundary{grid-column:1/-1;margin:0;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);color:#80938d;font-size:11px}
.site-footer{padding:38px clamp(24px,6vw,90px);background:#03100e;color:#96aaa3;display:grid;grid-template-columns:1fr auto;gap:28px;align-items:start}.footer-brand{display:flex;align-items:center;gap:18px}.footer-brand img{width:130px;filter:brightness(0) invert(1)}.footer-brand span{font-size:12px}.site-footer nav{display:flex;gap:24px;font-size:12px}.site-footer p{grid-column:1/-1;margin:0;padding-top:18px;border-top:1px solid rgba(255,255,255,.09);font-size:10px;line-height:1.7}
@keyframes pulse{0%,100%{box-shadow:0 0 0 5px rgba(239,115,65,.14)}50%{box-shadow:0 0 0 11px rgba(239,115,65,0)}}
@media(max-width:980px){.site-nav nav{display:none}.hero{grid-template-columns:1fr}.hero-copy{min-height:auto}.signal-map{min-height:620px}.case-grid{grid-template-columns:1fr}.case-card{min-height:340px;border-right:0;border-bottom:1px solid var(--line)}.case-card:last-child{border-bottom:0}.feilan{grid-template-columns:1fr}.feilan-portrait{min-height:640px}.method-line{grid-template-columns:1fr 1fr}.method-line li:nth-child(2){border-right:0}.method-line li:nth-child(-n+2){border-bottom:1px solid var(--line)}.join{grid-template-columns:1fr}.qr-card{max-width:520px}}
@media(max-width:640px){.site-nav{height:66px;padding:0 18px}.brand img{width:116px}.brand span{display:none}.nav-cta{font-size:0;display:flex;align-items:center}.nav-cta:before{content:"加入";font-size:13px}.nav-cta b{font-size:14px;margin-left:7px;width:30px;height:30px}.hero-copy{padding:66px 24px 54px}.hero h1{font-size:47px;line-height:1.08}.hero-lead{margin-top:24px;font-size:15px;line-height:1.9}.hero-actions{display:grid;margin:26px 0}.button{width:100%}.hero blockquote{font-size:17px}.signal-map{min-height:580px}.map-label{top:25px;left:24px}.node{width:154px;padding:13px}.node b{font-size:16px}.node span{font-size:9px}.owner{left:5%;top:17%}.feilan-node{left:10%;top:47%}.fde{right:4%;top:30%}.field{right:5%;bottom:18%}.node:after{display:none}.map-caption{left:24px;right:24px;bottom:22px}.map-caption strong{font-size:18px}.section{padding:76px 24px}.section-head{display:block;margin-bottom:32px}.section-head h2{font-size:43px}.section-head>p{margin-top:18px}.case-card{padding:24px;min-height:390px}.case-card h3{margin-top:38px;font-size:30px}.feilan-portrait{min-height:520px}.feilan-copy{padding:70px 24px}.feilan h2{font-size:45px}.translation-line{grid-template-columns:1fr}.translation-line article{border-bottom:1px solid rgba(255,255,255,.12)}.translation-line article:last-child{border-bottom:0}.feilan-status{grid-template-columns:1fr}.feilan-links{display:grid}.method-line{grid-template-columns:1fr}.method-line li,.method-line li:not(:first-child){min-height:auto;padding:22px 0;border-right:0;border-bottom:1px solid var(--line)}.method-line li:last-child{border-bottom:0}.join{display:block}.join h2{font-size:45px}.qr-card{margin-top:44px;grid-template-columns:132px 1fr;gap:14px;transform:none;box-shadow:10px 12px 0 rgba(239,115,65,.18)}.qr-card img{width:132px}.qr-card b{font-size:20px}.join-boundary{margin-top:46px}.site-footer{grid-template-columns:1fr}.site-footer nav{flex-wrap:wrap}.site-footer p{grid-column:auto}}
@media(min-width:981px){.hero{grid-template-columns:minmax(0,50%) minmax(0,50%)}.hero h1{font-size:clamp(48px,3.8vw,60px)}}
@media(min-width:641px) and (max-width:980px){.hero h1{font-size:clamp(48px,6vw,64px)}}
@media(max-width:640px){.hero h1{font-size:42px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.live-dot{animation:none}.button,.case-card{transition:none}}
.qr-card small,.qr-card b,.qr-card span,.qr-card em{display:block}.qr-card b{margin:13px 0 10px;line-height:1.28}.qr-card span{font-size:12px;line-height:1.65}.qr-card em{margin-top:12px;padding-top:10px;border-top:1px solid var(--line);color:#7f8b87;font:500 9px/1.4 var(--mono);font-style:normal;letter-spacing:.04em}
@media(max-width:640px){.nav-cta:before{content:"进入"}}