:root{--ink-0: #060f0b;--ink-1: #0a1611;--ink-2: #0e1f17;--ink-3: #14291f;--line-1: rgba(140, 190, 162, .12);--line-2: rgba(140, 190, 162, .24);--text-0: #f6fbf8;--text-1: #eaf5ed;--text-2: #a8c4b2;--text-3: #6f8d7c;--eco: #2ee6a8;--eco-soft: rgba(46, 230, 168, .14);--eco-line: rgba(46, 230, 168, .45);--blue: #5aa7ff;--blue-soft: rgba(90, 167, 255, .14);--blue-line: rgba(90, 167, 255, .45);--amber: #f5b84d;--rose: #fb7185;--violet: #a78bfa;--teal: #2dd4bf;--font-sans: "Noto Sans SC", "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;--font-serif: "Noto Serif SC", "Source Han Serif SC", "STZhongsong", serif;--font-mono: ui-monospace, "Cascadia Mono", Consolas, monospace;--r-sm: 8px;--r-md: 12px;--r-lg: 16px;--ease-out: cubic-bezier(.22, 1, .36, 1);color-scheme:dark}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);font-size:15px;line-height:1.7;color:var(--text-1);background:var(--ink-0);-webkit-font-smoothing:antialiased}::selection{background:var(--eco-soft);color:var(--eco)}button,input{font-family:inherit;font-size:inherit;color:inherit}a{color:inherit;text-decoration:none}.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border:none;border-radius:var(--r-md);font-size:15px;font-weight:500;letter-spacing:.03em;color:#04130c;background:linear-gradient(135deg,#43f0b4,#19c98c);box-shadow:0 0 26px #2ee6a852,inset 0 1px #ffffff40;cursor:pointer;transition:transform .15s var(--ease-out),box-shadow .2s var(--ease-out)}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 34px #2ee6a87a,inset 0 1px #ffffff40}.btn-primary:active{transform:translateY(0)}.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 24px;border:1px solid var(--line-2);border-radius:var(--r-md);background:none;color:var(--text-1);font-size:15px;cursor:pointer;transition:border-color .18s,color .18s}.btn-ghost:hover{border-color:var(--eco-line);color:var(--eco)}.tabular{font-variant-numeric:tabular-nums}.landing{background:radial-gradient(1200px 640px at 14% -10%,rgba(46,230,168,.06),transparent 60%),radial-gradient(900px 700px at 108% 30%,rgba(90,167,255,.05),transparent 55%),var(--ink-0)}.lp-topbar{position:fixed;inset:0 0 auto 0;z-index:20;display:flex;align-items:center;gap:28px;padding:14px clamp(20px,4vw,48px);background:linear-gradient(rgba(6,15,11,.92),rgba(6,15,11,.72) 70%,transparent)}.lp-brand{display:flex;align-items:center;gap:10px;font-family:var(--font-serif);font-size:17px;color:var(--text-0);letter-spacing:.05em}.brand-mark{display:inline-block;width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,#43f0b4,#19c98c);position:relative;flex:none}.brand-mark:after{content:"";position:absolute;top:8px;right:8px;bottom:8px;left:8px;border:2px solid #04130c;border-radius:3px;transform:rotate(45deg)}.lp-nav{display:flex;gap:22px;margin-left:auto;font-size:14px;color:var(--text-2)}.lp-nav a:hover{color:var(--eco)}.lp-nav-login{color:var(--text-3)}.lp-cta-top{padding:9px 18px;font-size:13.5px}.hero{position:relative;min-height:100vh;display:flex;flex-direction:column;justify-content:center;overflow:hidden;padding:110px clamp(20px,5vw,56px) 36px}.hero-graph{position:absolute;top:0;right:0;bottom:0;left:0}.hero-veil{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;background:linear-gradient(100deg,#060f0bf0 26%,#060f0b8c 55%,#060f0b40),linear-gradient(rgba(6,15,11,.4),transparent 30%,transparent 62%,rgba(6,15,11,.96) 96%)}.hero-copy{position:relative;max-width:720px}.hero-kicker{margin-bottom:18px;color:var(--eco);font-size:13.5px;letter-spacing:.22em}.hero h1{font-family:var(--font-serif);font-size:clamp(30px,4.6vw,54px);font-weight:600;line-height:1.32;color:var(--text-0);letter-spacing:.02em}.hero h1 em{font-style:normal;color:var(--eco)}.hero-sub{max-width:58ch;margin:22px 0 34px;color:var(--text-2);font-size:clamp(14.5px,1.3vw,16.5px);line-height:1.85}.hero-actions{display:flex;flex-wrap:wrap;gap:14px}.hero-stats{position:relative;display:flex;flex-wrap:wrap;align-items:baseline;gap:clamp(20px,4vw,52px);margin-top:clamp(40px,8vh,86px);padding-top:22px;border-top:1px solid var(--line-1);max-width:880px}.stat b{display:block;font-size:clamp(24px,2.6vw,34px);font-weight:600;color:var(--text-0)}.stat span{color:var(--text-3);font-size:12.5px;letter-spacing:.08em}.stats-note{flex-basis:100%;margin-top:6px;color:var(--text-3);font-size:12px}.lp-section{position:relative;max-width:980px;margin:0 auto;padding:clamp(72px,12vh,130px) clamp(20px,5vw,48px) 0}.sec-kicker{color:var(--eco);font-size:13px;letter-spacing:.22em;margin-bottom:14px}.lp-section h2{font-family:var(--font-serif);font-size:clamp(24px,3.2vw,38px);font-weight:600;line-height:1.42;color:var(--text-0);letter-spacing:.02em}.lp-section h2 em{font-style:normal;color:var(--eco)}.sec-sub{max-width:62ch;margin-top:16px;color:var(--text-2)}.loop-line{list-style:none;margin-top:46px;border-left:1px solid var(--line-2)}.loop-line li{position:relative;padding:0 0 38px 34px}.loop-line li:before{content:"";position:absolute;left:-5px;top:8px;width:9px;height:9px;border-radius:50%;background:var(--eco);box-shadow:0 0 12px #2ee6a899}.loop-line b{font-family:var(--font-mono);font-size:12.5px;color:var(--text-3);letter-spacing:.18em}.loop-line h3{margin:4px 0 6px;font-size:17.5px;color:var(--text-0)}.loop-line p{max-width:64ch;color:var(--text-2);font-size:14.5px}.loop-note{margin:8px 0 0 34px;max-width:62ch;padding:14px 16px;border:1px solid rgba(245,184,77,.3);border-radius:var(--r-sm);background:#f5b84d12;color:#ffd9a1;font-size:14px}.aud-rows{margin-top:40px}.aud-row{display:grid;grid-template-columns:180px 1fr;gap:24px;padding:30px 0;border-top:1px solid var(--line-1)}.aud-row:last-child{border-bottom:1px solid var(--line-1)}.aud-row h3{font-family:var(--font-serif);font-size:21px;color:var(--text-0);letter-spacing:.06em}.aud-row p{max-width:64ch;color:var(--text-2);font-size:15px}.tier-list{margin-top:40px}.tier{display:grid;grid-template-columns:180px 1fr;gap:24px;padding:24px 0;border-top:1px solid var(--line-1)}.tier:last-child{border-bottom:1px solid var(--line-1)}.tier dt{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:600;color:var(--text-0)}.tier dd{color:var(--text-2);font-size:15px;max-width:64ch}.dot{width:9px;height:9px;border-radius:50%;flex:none}.t-shared{background:var(--eco)}.t-private{background:var(--amber)}.t-aggregate{background:var(--violet)}.lp-contact{text-align:center;padding-bottom:30px}.lp-contact .sec-sub{margin-left:auto;margin-right:auto}.lp-contact .hero-actions{justify-content:center;margin-top:34px}.lp-footer{margin-top:clamp(70px,11vh,120px);padding:34px clamp(20px,5vw,48px) 42px;border-top:1px solid var(--line-1);text-align:center;color:var(--text-2);font-size:14px}.lp-foot-fine{margin-top:8px;color:var(--text-3);font-size:12.5px}.lp-foot-fine a:hover{color:var(--eco)}[data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease-out),transform .6s var(--ease-out)}[data-reveal].in{opacity:1;transform:none}@media(prefers-reduced-motion:reduce){[data-reveal]{opacity:1;transform:none;transition:none}}@media(max-width:860px){.lp-nav{display:none}.aud-row,.tier{grid-template-columns:1fr;gap:8px}.hero{padding-top:92px}.hero-stats{gap:22px}}