:root{color-scheme:light dark;--bg:#fff;--fg:#191919;--muted:#68635b;--line:#dedbd5;--accent:#93642f;--amber:#c99858;--card-top:#fffaf2;--card-bottom:#fff;--button:#f4eadc;--button-hover:#ebddca;--glass:#c9985812;--hero-halo:#c9985818}
@media(prefers-color-scheme:dark){:root{--bg:#0c0c0d;--fg:#f7f5ef;--muted:#b1aba2;--line:#ffffff29;--accent:#e5bb84;--card-top:#c9985810;--card-bottom:#ffffff02;--button:#c9985820;--button-hover:#c9985838;--glass:#c9985820;--hero-halo:#c9985823}}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased;line-height:1.7}a{color:inherit;text-decoration:none}a:focus-visible{outline:2px solid var(--accent);outline-offset:5px;border-radius:5px}svg{display:block}img{max-width:100%}.skip{position:absolute;left:24px;top:-100px;z-index:9;padding:9px 15px;background:var(--bg);border:1px solid var(--accent)}.skip:focus{top:18px}.wrap{width:min(1410px,calc(100% - 96px));margin:auto}.site-header{border-bottom:1px solid var(--line)}.header-inner{height:78px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{font-size:28px;font-weight:700;letter-spacing:-1px;line-height:1}.header-inner nav{display:flex;gap:53px;align-items:center;font-size:14px}.header-inner nav a{position:relative;padding:8px 0}.header-inner nav a:hover{color:var(--accent)}.header-inner nav a[aria-current=page]{color:var(--accent)}.header-inner nav a[aria-current=page]:after{content:"";position:absolute;height:2px;background:var(--amber);bottom:0;left:0;right:0}.hero{position:relative;min-height:350px;padding:47px 0 32px;isolation:isolate;overflow:clip}.hero:before{content:"";position:absolute;width:70%;height:330px;right:-25px;top:0;z-index:-1;background:radial-gradient(ellipse,var(--hero-halo),transparent 66%);pointer-events:none}.hero-ribbon{position:absolute;width:79%;max-width:none;height:400px;object-fit:contain;right:-10.5%;top:-45px;z-index:-1;pointer-events:none;user-select:none}.hero h1{font-size:clamp(62px,6.7vw,104px);font-weight:750;letter-spacing:-4px;line-height:1.13;margin:0 0 18px;max-width:770px}.hero h1 span{display:block}.hero p{font-size:clamp(18px,1.7vw,25px);font-weight:500;color:var(--fg);margin:0;letter-spacing:.3px;max-width:750px}.products{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;padding:0 0 35px}.product{position:relative;min-width:0;display:flex;flex-direction:column;text-align:center;padding:33px 31px 26px;border:1px solid var(--line);border-radius:12px;background:linear-gradient(145deg,var(--card-top),var(--card-bottom));box-shadow:inset 0 1px 0 #ffffff07;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.product:before{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;background:radial-gradient(ellipse at 50% 0,var(--glass),transparent 66%)}.product>*{position:relative}.product-icon{height:99px;display:grid;place-items:center;margin:0 0 18px;color:var(--amber)}.product-icon svg{height:89px;width:120px;overflow:visible;filter:drop-shadow(0 4px 15px #c9985829)}.product h2{font-size:clamp(30px,3.2vw,47px);letter-spacing:-1px;font-weight:700;line-height:1.3;margin:0 0 8px}.tagline{font-size:clamp(17px,1.65vw,23px);color:var(--accent);margin:0 0 18px;font-weight:500;line-height:1.55}.details{font-size:13px;color:var(--muted);margin:0 0 22px;min-height:42px;line-height:1.7}.product-actions{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);display:grid;gap:10px}.button{display:flex;align-items:center;justify-content:center;gap:19px;border:1px solid color-mix(in srgb,var(--amber) 62%,var(--line));border-radius:12px;background:var(--button);padding:14px 12px;font-size:15px;font-weight:600;line-height:1.6;transition:background .18s,border-color .18s,transform .18s}.button:hover{background:var(--button-hover);border-color:var(--amber);transform:translateY(-1px)}.button svg{width:20px;height:20px;flex-shrink:0}.product-note{color:var(--muted);font-size:11px;margin:15px 0 0;line-height:1.75}.product-note a{text-decoration:underline;text-underline-offset:3px}.about{border-top:1px solid var(--line);padding:20px 0 24px;display:flex;justify-content:space-between;gap:35px;align-items:flex-start}.about h2{font-size:14px;font-weight:500;margin:0;max-width:450px;line-height:1.7}.about p{color:var(--muted);font-size:11px;max-width:625px;margin:0;line-height:1.9}.site-footer{border-top:1px solid var(--line)}.footer-inner{display:flex;justify-content:space-between;gap:22px;align-items:center;padding:23px 0 30px;font-size:11px;color:var(--muted)}.footer-publisher{display:flex;gap:18px;align-items:center}.footer-publisher strong{font-size:18px;color:var(--fg);font-weight:650}.footer-inner nav{display:flex;gap:26px;align-items:center;flex-wrap:wrap}.footer-inner a:hover{color:var(--accent)}
@media(min-width:1600px){.hero{min-height:385px;padding-top:55px}.hero-ribbon{height:440px;top:-42px}.products{gap:15px}.product{padding-top:37px;padding-bottom:30px}.product-icon{height:114px}}
@media(max-width:1000px){.wrap{width:calc(100% - 52px)}.header-inner{height:72px}.header-inner nav{gap:32px}.hero{min-height:315px;padding-top:38px}.hero h1{font-size:clamp(57px,7.2vw,79px);letter-spacing:-2.5px}.hero-ribbon{width:88%;height:350px;right:-10%;top:-17px}.hero p{font-size:19px}.product{padding:26px 21px 23px}.product-icon{height:84px;margin-bottom:13px}.product-icon svg{height:76px;width:104px}.product h2{font-size:33px}.tagline{font-size:18px}.details{font-size:11px;min-height:40px}.button{font-size:12px;gap:10px;padding:12px 6px}.product-note{font-size:10px}.footer-inner nav{gap:16px}.about{gap:25px}}
@media(max-width:720px){.wrap{width:calc(100% - 36px)}.header-inner{height:66px;gap:18px}.brand{font-size:25px}.header-inner nav{gap:25px;font-size:12px}.hero{padding-top:39px;padding-bottom:35px;min-height:285px}.hero h1{font-size:clamp(43px,10.8vw,70px);letter-spacing:-1.8px;max-width:100%;margin-bottom:17px}.hero p{font-size:14px;line-height:1.9;max-width:90%}.hero-ribbon{width:122%;height:280px;right:-31%;top:4px;opacity:.68}.hero:before{width:100%;height:275px;right:-15px}.products{grid-template-columns:1fr;gap:16px;padding-bottom:29px}.product{padding:24px 25px 22px}.product-icon{height:77px;margin-bottom:14px}.product-icon svg{height:73px;width:111px}.product h2{font-size:35px}.tagline{font-size:19px;margin-bottom:14px}.details{font-size:12px;min-height:0;margin-bottom:19px}.product-actions{padding-top:17px}.button{font-size:14px;gap:16px;padding:12px}.product-note{font-size:11px;margin-top:13px}.about{display:block;padding:20px 0 23px}.about h2{font-size:13px;margin-bottom:11px}.about p{font-size:11px}.footer-inner{display:block;padding:20px 0 25px}.footer-publisher{display:block;line-height:1.9;font-size:10px}.footer-publisher strong{margin-right:12px;font-size:17px}.footer-inner nav{font-size:10px;gap:20px;margin-top:16px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.button{transition:none}.button:hover{transform:none}}
@media print{body{background:#fff;color:#111}.wrap{width:100%}.products{display:block}.product{break-inside:avoid;border:0;text-align:left;padding:20px 0}.hero{min-height:0}.hero h1{font-size:45px}.site-footer{border:0}}
/* Tinglan (2026-10-20): the app's own look on its pages -- pearl or deep-space ground, aurora, glass, one ring of light. */
.tl{--bg:#f1f4fc;--fg:#0d1330;--muted:#4a5478;--faint:#8a93b2;--line:#141e5a1c;--accent:#2f6bff;--amber:#4d7cff;--warm:#e8308c;--glass:#ffffffb3;--glass-hot:#ffffffd9;--edge:#141e5a21;--rim:#ffffffe6;--drop:#2a3c9a2e;--holo-text:linear-gradient(90deg,#00a0d8,#3f66f0 48%,#8a3cf0);--her-text:linear-gradient(90deg,#e8308c,#a43cf0);background:var(--bg)}
@media(prefers-color-scheme:dark){.tl{--bg:#05060d;--fg:#f2f5ff;--muted:#a7b0cc;--faint:#6b7594;--line:#ffffff1c;--accent:#62ddff;--amber:#62ddff;--warm:#ff62b0;--glass:#161a2ec2;--glass-hot:#1f2440e6;--edge:#ffffff26;--rim:#ffffff14;--drop:#000000a6;--holo-text:linear-gradient(90deg,#5cf0ff,#7fa6ff 48%,#be96ff);--her-text:linear-gradient(90deg,#ff78bc,#cb96ff)}}
.tl-aurora{position:fixed;inset:0;z-index:-1;pointer-events:none;background:radial-gradient(62vmax 62vmax at 16% 6%,#609cff8c,transparent 62%),radial-gradient(52vmax 52vmax at 92% 16%,#bc86ff80,transparent 62%),radial-gradient(60vmax 60vmax at 74% 102%,#ff8cc473,transparent 62%),radial-gradient(46vmax 46vmax at 6% 92%,#60e6ff73,transparent 62%)}
@media(prefers-color-scheme:dark){.tl-aurora{background:radial-gradient(62vmax 62vmax at 16% 6%,#3a78ff80,transparent 62%),radial-gradient(52vmax 52vmax at 92% 16%,#a054ff6b,transparent 62%),radial-gradient(60vmax 60vmax at 74% 102%,#ff3e964d,transparent 62%),radial-gradient(46vmax 46vmax at 6% 92%,#18deff42,transparent 62%)}}
.tl .brand{display:inline-flex;align-items:center;gap:11px;letter-spacing:-.6px}.tl-mark{width:22px;height:22px;border-radius:50%;background:conic-gradient(from 200deg,#27e0ff,#4d7cff,#9b5cff,#27e0ff);-webkit-mask:radial-gradient(circle,transparent 50%,#000 54%);mask:radial-gradient(circle,transparent 50%,#000 54%);filter:drop-shadow(0 0 6px #4d7cff80)}
.tl .site-header{position:sticky;top:0;z-index:5;border-bottom-color:var(--line);background:color-mix(in srgb,var(--bg) 62%,transparent);backdrop-filter:blur(18px) saturate(150%);-webkit-backdrop-filter:blur(18px) saturate(150%)}.tl .site-footer{border-top-color:var(--line)}
.tl-glass{position:relative;border:1px solid var(--edge);border-radius:24px;background:var(--glass);box-shadow:inset 0 1px 0 var(--rim),0 24px 60px -34px var(--drop);backdrop-filter:blur(22px) saturate(150%);-webkit-backdrop-filter:blur(22px) saturate(150%)}
.tl-holo{background:var(--holo-text);-webkit-background-clip:text;background-clip:text;color:transparent}.tl-her{background:var(--her-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.tl-kicker{font:600 12px/1 "Avenir Next",-apple-system,sans-serif;letter-spacing:3px;text-transform:uppercase;color:var(--accent);margin:0 0 22px}
.tl-hero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:40px;align-items:center;padding:64px 0 56px}
.tl-hero h1{font-size:clamp(46px,5.4vw,82px);font-weight:750;letter-spacing:-2.5px;line-height:1.14;margin:0 0 24px}.tl-hero h1 span{display:block}
.tl-lead{font-size:17px;line-height:1.95;color:var(--muted);max-width:560px;margin:0}
.tl-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:34px}
.tl-button{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:52px;padding:0 28px;border-radius:999px;font-size:15px;font-weight:650;letter-spacing:.2px;transition:transform .2s,box-shadow .2s,background .2s}
.tl-button svg{width:19px;height:19px;flex-shrink:0}
.tl-primary{color:#fff;background:linear-gradient(100deg,#19c8ff,#4d7cff 52%,#9b5cff);box-shadow:0 12px 32px -12px #4d7cffb3,inset 0 1px 0 #ffffff59}
.tl-primary:hover{transform:translateY(-1px);box-shadow:0 16px 38px -12px #6a6cffcc,inset 0 1px 0 #ffffff59}
.tl-quiet{border:1px solid var(--edge);background:var(--glass);box-shadow:inset 0 1px 0 var(--rim);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}.tl-quiet:hover{background:var(--glass-hot)}
.tl-fine{font-size:12px;color:var(--faint);margin:16px 0 0;line-height:1.8}
.tl-stage{display:grid;justify-items:center;gap:18px}
.tl-core{position:relative;width:min(100%,500px);aspect-ratio:1}.tl-core canvas{position:absolute;inset:0;width:100%;height:100%}.tl-core .tl-halo{filter:blur(clamp(14px,2.6vw,30px))}
.tl-states{display:inline-flex;gap:4px;padding:5px;border-radius:999px}
.tl-states button{font:inherit;font-size:13px;color:var(--muted);border:0;background:none;padding:8px 16px;border-radius:999px;cursor:pointer;transition:color .3s,background .3s,box-shadow .3s}
.tl-states button[aria-pressed=true]{color:var(--fg);background:var(--glass-hot);box-shadow:inset 0 0 0 1px var(--edge),0 0 18px -4px var(--glow,#4d7cff)}
.tl-states button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.tl-caption{font-size:13px;color:var(--faint);margin:0;min-height:1.8em;text-align:center}
.tl-section{padding:34px 0 46px}.tl-section>h2{font-size:clamp(28px,3vw,40px);font-weight:700;letter-spacing:-1px;line-height:1.3;margin:0 0 10px}.tl-section>p{color:var(--muted);font-size:15px;margin:0 0 30px;max-width:640px}
.tl-cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.tl-card{padding:28px 26px 26px;min-width:0}.tl-card h3{font-size:19px;letter-spacing:-.3px;margin:22px 0 10px}.tl-card p{font-size:13.5px;line-height:1.95;color:var(--muted);margin:0}
.tl-dot{width:42px;height:42px;border-radius:50%;background:conic-gradient(from 200deg,var(--a),var(--b),var(--c),var(--a));-webkit-mask:radial-gradient(circle,transparent 52%,#000 55%);mask:radial-gradient(circle,transparent 52%,#000 55%);filter:drop-shadow(0 0 10px var(--b))}
.tl-devices{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.tl-device{padding:26px;display:flex;flex-direction:column;gap:8px;min-width:0}.tl-device h3{font-size:22px;letter-spacing:-.4px;margin:0}.tl-device p{font-size:13.5px;color:var(--muted);margin:0;line-height:1.9}
.tl-badge{align-self:flex-start;font-size:11.5px;font-weight:600;letter-spacing:.5px;padding:4px 11px;border-radius:999px;border:1px solid var(--edge);color:var(--muted)}.tl-badge.on{color:#fff;border-color:transparent;background:linear-gradient(100deg,#19c8ff,#4d7cff)}
.tl-privacy{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:34px;padding:36px 38px;align-items:start}.tl-privacy h2{font-size:clamp(26px,2.6vw,34px);letter-spacing:-.8px;line-height:1.35;margin:0 0 14px}.tl-privacy>div>p{color:var(--muted);font-size:14px;margin:0 0 22px}
.tl-points{list-style:none;margin:0;padding:0;display:grid;gap:14px}.tl-points li{display:grid;grid-template-columns:22px 1fr;gap:12px;font-size:14px;line-height:1.85}.tl-points li:before{content:"";width:10px;height:10px;margin-top:8px;border-radius:50%;background:linear-gradient(135deg,#19c8ff,#9b5cff);box-shadow:0 0 10px #4d7cff99}
.tl-points b{font-weight:650}.tl-points span{color:var(--muted)}
.tl-link{color:var(--accent);font-size:14px;font-weight:600}.tl-link:hover{text-decoration:underline;text-underline-offset:4px}
.tl-download{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;padding:40px;overflow:hidden}
.tl-download:before{content:"";position:absolute;inset:-1px;border-radius:inherit;padding:1px;background:linear-gradient(120deg,#19c8ff99,#4d7cff40,#ff4fa399);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.tl-download h2{font-size:clamp(28px,3vw,40px);letter-spacing:-1px;line-height:1.25;margin:0 0 14px}
.tl-specs{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 26px;padding:0;list-style:none}.tl-specs li{font-size:12.5px;padding:5px 12px;border-radius:999px;border:1px solid var(--edge);color:var(--muted)}
.tl-steps{margin:0;padding:0;list-style:none;counter-reset:s;display:grid;gap:16px}.tl-steps li{counter-increment:s;display:grid;grid-template-columns:34px 1fr;gap:14px;font-size:14px;line-height:1.85;color:var(--muted)}.tl-steps li b{color:var(--fg);font-weight:650}
.tl-steps li:before{content:counter(s);width:34px;height:34px;border-radius:50%;display:grid;place-items:center;font:650 14px/1 "Avenir Next",sans-serif;color:var(--accent);border:1px solid var(--edge);background:var(--glass-hot)}
.tl-hash{margin:18px 0 0;font-size:11.5px;color:var(--faint);overflow-wrap:anywhere;font-family:ui-monospace,Menlo,monospace}
.tl-contact{display:flex;justify-content:space-between;gap:30px;align-items:center;padding:30px 0 40px;border-top:1px solid var(--line);margin-top:20px;font-size:13.5px;color:var(--muted)}.tl-contact a{color:var(--accent)}
.tl-doc{max-width:860px;margin:auto;padding:56px 0 30px}.tl-doc h1{font-size:clamp(38px,4.6vw,60px);letter-spacing:-1.8px;line-height:1.2;margin:0 0 16px}.tl-doc .tl-lead{max-width:none}
.tl-meta{display:flex;flex-wrap:wrap;gap:8px;margin:24px 0 0;padding:0;list-style:none}.tl-meta li{font-size:12.5px;padding:5px 12px;border-radius:999px;border:1px solid var(--edge);color:var(--muted);background:var(--glass)}
.tl-summary{margin:34px 0 10px;padding:28px 30px}.tl-summary h2{font-size:17px;margin:0 0 16px}
.tl-toc{margin:26px 0 0;padding:22px 26px;columns:2;column-gap:30px;font-size:13.5px}.tl-toc a{display:block;padding:4px 0;color:var(--muted)}.tl-toc a:hover{color:var(--accent)}
.tl-doc section{scroll-margin-top:90px;padding:30px 0 6px;border-top:1px solid var(--line);margin-top:30px}.tl-doc section h2{font-size:24px;letter-spacing:-.5px;margin:0 0 14px}.tl-doc section h3{font-size:16px;margin:22px 0 8px}
.tl-doc section p,.tl-doc section li{font-size:14.5px;line-height:2;color:var(--muted)}.tl-doc section p{margin:0 0 12px}.tl-doc section ul{margin:0 0 12px;padding-left:20px}.tl-doc section li{margin:4px 0}.tl-doc section b{color:var(--fg);font-weight:650}.tl-doc section a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.tl-table{width:100%;border-collapse:collapse;margin:8px 0 14px;font-size:13.5px}.tl-table th,.tl-table td{text-align:left;vertical-align:top;padding:11px 12px;border-bottom:1px solid var(--line);line-height:1.8}.tl-table th{font-weight:650;color:var(--fg);white-space:nowrap}.tl-table td{color:var(--muted)}
.tl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
@media(max-width:1000px){.tl-hero{grid-template-columns:1fr;gap:10px;padding-top:40px}.tl-stage{order:-1}.tl-core{width:min(78vw,400px);margin:-7% 0 -9%}.tl-cards{grid-template-columns:repeat(2,minmax(0,1fr))}.tl-privacy,.tl-download{grid-template-columns:1fr;gap:26px}}
@media(max-width:720px){.tl .wrap{width:calc(100% - 32px)}.tl-hero{padding:22px 0 30px}.tl-hero h1{font-size:clamp(36px,10vw,52px);letter-spacing:-1.4px}.tl-lead{font-size:15px}.tl-actions{flex-direction:column;align-items:stretch}.tl-button{width:100%}.tl-states button{padding:8px 12px;font-size:12.5px}.tl-cards,.tl-devices{grid-template-columns:1fr}.tl-privacy,.tl-download{padding:26px 22px}.tl-contact{display:block}.tl-contact p+p{margin-top:8px}.tl-toc{columns:1}.tl-doc{padding-top:34px}.tl-summary{padding:22px}.tl-table th{white-space:normal}.tl .header-inner nav{gap:18px}}
@media(prefers-reduced-motion:reduce){.tl-button,.tl-states button{transition:none}.tl-primary:hover{transform:none}}

.footer-icp{white-space:nowrap}@media(max-width:720px){.footer-icp{display:block}}