@import"https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@500;600&family=Noto+Serif+SC:wght@600;700;900&display=swap";:root{color-scheme:dark;--ink:#0b0c0d;--panel:#141617;--line:#343838;--paper:#f0efe9;--acid:#d7ff3f;--soft:#aeb4ac;--orange:#ff8259;font-family:IBM Plex Mono,PingFang SC,monospace;background:var(--ink);color:var(--paper)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 80% 10%,rgba(215,255,63,.08),transparent 26%),var(--ink)}a{color:inherit;text-decoration:none}button,input{font:inherit}.site{overflow:hidden}.topbar{height:78px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:0 clamp(20px,5vw,74px);border-bottom:1px solid var(--line);position:relative;z-index:10}.brand{display:flex;align-items:center;gap:12px;width:max-content}.brand span{display:grid;place-items:center;width:42px;height:42px;background:var(--acid);color:var(--ink);font-weight:900;letter-spacing:-2px;transform:rotate(-4deg)}.brand strong{font-family:"Noto Serif SC",serif;font-size:22px}.topbar nav{display:flex;gap:30px;color:var(--soft);font-size:12px}.topbar nav a:hover,.text-link:hover,footer a:hover{color:var(--acid)}.text-link{justify-self:end;font-size:12px}.hero{min-height:760px;display:grid;grid-template-columns:minmax(0,1.02fr) minmax(440px,.98fr);gap:6vw;align-items:center;padding:72px clamp(20px,6vw,92px) 100px;border-bottom:1px solid var(--line);position:relative}.hero:before{content:"";position:absolute;width:320px;height:320px;border:1px solid var(--line);border-radius:50%;left:-170px;top:100px}.eyebrow{color:var(--acid);font-size:11px;letter-spacing:.16em;text-transform:uppercase}h1,h2,h3{font-family:"Noto Serif SC",Songti SC,serif}h1{font-size:clamp(54px,7.6vw,116px);line-height:.96;letter-spacing:-.065em;margin:26px 0 32px}h1 em{color:var(--acid);font-style:normal}.hero-lead{color:var(--soft);font-family:PingFang SC,sans-serif;line-height:1.85;max-width:650px;font-size:17px}.hero-actions{display:flex;gap:12px;margin:34px 0}.button{min-height:48px;display:inline-flex;align-items:center;justify-content:center;padding:0 22px;border:1px solid var(--acid);cursor:pointer;transition:.2s ease;font-weight:700}.button-solid{background:var(--acid);color:var(--ink)}.button-solid:hover{background:var(--paper);border-color:var(--paper);transform:translateY(-2px)}.button-ghost:hover{color:var(--acid);transform:translateY(-2px)}.trust-line{display:flex;gap:18px;flex-wrap:wrap;color:#747b75;font-size:10px}.trust-line span:before{content:"●";color:var(--acid);margin-right:7px}.hero-board{background:#111314;border:1px solid #4a504d;box-shadow:28px 28px #d7ff3f14;transform:rotate(1.4deg)}.board-header{height:54px;display:flex;justify-content:space-between;align-items:center;padding:0 18px;border-bottom:1px solid var(--line);font-size:11px}.live-dot{color:var(--acid)}.live-dot:before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--acid);margin-right:7px;box-shadow:0 0 14px var(--acid)}.conversation-list article{display:grid;grid-template-columns:42px 1fr auto;gap:14px;align-items:center;padding:18px;border-bottom:1px solid #272b2a}.conversation-list article:hover{background:#191c1c}.avatar{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;border:1px solid #59605d;color:var(--acid)}.conversation-list strong{font-family:PingFang SC,sans-serif;font-size:14px}.conversation-list p{margin:6px 0 0;color:#89908b;font-size:11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conversation-list b{min-width:24px;height:24px;display:grid;place-items:center;border-radius:50%;background:var(--acid);color:var(--ink);font-size:10px}.plan-strip{display:flex;align-items:center;gap:10px;padding:18px;color:#8f9691;font-size:9px}.plan-strip i{flex:1;height:1px;background:#454b48}.capabilities{padding:120px clamp(20px,6vw,92px)}.capabilities>header{max-width:850px}h2{font-size:clamp(40px,5vw,76px);line-height:1.12;letter-spacing:-.045em;margin:20px 0 46px}.cap-grid{display:grid;grid-template-columns:1.15fr repeat(2,.75fr);border:1px solid var(--line)}.cap-grid article{min-height:270px;padding:32px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:#1416178c}.cap-grid article:nth-child(3){border-right:0}.cap-grid article:nth-child(4){grid-column:2/4;border-bottom:0;border-right:0}.cap-primary{grid-row:span 2;min-height:540px!important;background:var(--acid)!important;color:var(--ink);border-bottom:0!important}.cap-grid span{font-size:11px;opacity:.65}.cap-grid h3{font-size:31px;margin:70px 0 20px}.cap-primary h3{font-size:54px;margin-top:150px}.cap-grid p,.cap-grid li{font-family:PingFang SC,sans-serif;line-height:1.8;color:var(--soft)}.cap-primary p,.cap-primary li{color:#31352f}.plans{display:grid;grid-template-columns:.72fr 1.28fr;gap:6vw;padding:120px clamp(20px,6vw,92px);background:var(--paper);color:var(--ink)}.plans>div>p:not(.eyebrow){color:#5d625d;line-height:1.8;font-family:PingFang SC,sans-serif}.plans .eyebrow{color:#5b671d}.plan-table{display:grid;grid-template-columns:1fr 1fr;align-self:start}.plan-table article{border:1px solid #aeb1aa;padding:34px;min-height:470px;display:flex;flex-direction:column}.plan-table .enterprise{background:var(--ink);color:var(--paper);border-color:var(--ink);transform:translateY(30px)}.plan-table span{font-size:11px;letter-spacing:.14em;color:#737970}.plan-table h3{font-size:30px;margin:54px 0 22px}.plan-table ul{list-style:none;padding:0;margin:0;font-family:PingFang SC,sans-serif;line-height:2.2}.plan-table li:before{content:"—";margin-right:10px;color:#7a811f}.plan-table .muted{opacity:.45}.plan-table a{margin-top:auto;text-decoration:underline;text-underline-offset:6px}.download{display:grid;grid-template-columns:1.2fr .8fr auto;gap:4vw;align-items:end;padding:100px clamp(20px,6vw,92px);border-bottom:1px solid var(--line)}.download h2{margin-bottom:0}.download>p{color:var(--soft);line-height:1.8;font-family:PingFang SC,sans-serif}.register{display:grid;grid-template-columns:.9fr 1.1fr;gap:8vw;padding:120px clamp(20px,9vw,150px)}.register-copy p:not(.eyebrow){color:var(--soft);line-height:1.9;font-family:PingFang SC,sans-serif;max-width:540px}.register-copy>a{color:var(--acid);text-decoration:underline;text-underline-offset:6px}.register-form{border:1px solid var(--line);padding:34px;display:grid;grid-template-columns:1fr 1fr;gap:18px;background:#101213}.register-form label{display:grid;gap:9px;color:#a5aba6;font-size:11px}.register-form input{width:100%;background:#191c1d;color:var(--paper);border:1px solid #3d4340;padding:13px 14px;outline:0}.register-form input:focus{border-color:var(--acid)}.register-form .agreement,.turnstile-slot,.register-form button,.form-status{grid-column:1/-1}.agreement{display:flex!important;align-items:center;grid-template-columns:auto 1fr!important}.agreement input{width:auto}.turnstile-slot{min-height:66px}.form-status{min-height:34px;margin:0;color:#89908b;line-height:1.5;font-family:PingFang SC,sans-serif;font-size:12px}.form-status.success{color:var(--acid)}.form-status.error{color:var(--orange)}footer{min-height:150px;border-top:1px solid var(--line);padding:38px clamp(20px,5vw,74px);display:grid;grid-template-columns:1fr 1fr 1fr;align-items:center;color:#787e79;font-size:11px}footer>div:last-child{display:flex;gap:24px;justify-self:end}@media (max-width:980px){.topbar{grid-template-columns:1fr auto}.topbar nav{display:none}.hero{grid-template-columns:1fr;padding-top:80px}.hero-board{max-width:680px}.cap-grid{grid-template-columns:1fr 1fr}.cap-primary{grid-row:auto;grid-column:1/-1;min-height:430px!important}.cap-primary h3{margin-top:100px}.cap-grid article:nth-child(3){border-right:1px solid var(--line)}.cap-grid article:nth-child(4){grid-column:1/-1}.plans,.register{grid-template-columns:1fr}.download{grid-template-columns:1fr;align-items:start}.download .button{width:max-content}}@media (max-width:640px){.topbar{height:68px}.text-link{font-size:0}.text-link:after{content:"登录 ↗";font-size:11px}h1{font-size:53px}.hero{min-height:auto;padding-bottom:70px}.hero-board{transform:none;box-shadow:12px 12px #d7ff3f14}.conversation-list article:nth-child(n+4){display:none}.capabilities,.plans,.download,.register{padding-top:78px;padding-bottom:78px}.cap-grid{grid-template-columns:1fr}.cap-primary,.cap-grid article:nth-child(4){grid-column:auto}.cap-grid article{border-right:0!important}.plan-table{grid-template-columns:1fr}.plan-table .enterprise{transform:none}.register-form{grid-template-columns:1fr;padding:22px}footer{grid-template-columns:1fr;gap:24px}footer>div:last-child{justify-self:start}}