*{box-sizing:border-box}
:root{--p:#6d28d9;--p2:#7c3aed;--pl:#f5f3ff;--bg:#fff;--bg2:#fafafa;--card:#fff;--b:#e5e7eb;--t:#111827;--m:#6b7280;--sh:0 1px 2px rgba(0,0,0,.04),0 8px 24px rgba(17,24,39,.06)}
@media (prefers-color-scheme:dark){:root{--p:#a78bfa;--p2:#8b5cf6;--pl:#1e1b2e;--bg:#0b0b10;--bg2:#111118;--card:#15151d;--b:#26262f;--t:#ececf1;--m:#9ca3af;--sh:0 1px 2px rgba(0,0,0,.3)}}
html{scroll-behavior:smooth}
body{margin:0;font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;color:var(--t);background:var(--bg);-webkit-font-smoothing:antialiased}
a{color:var(--p)}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
.nav{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--b)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--t);text-decoration:none}
.brand img{width:28px;height:28px;border-radius:7px}
.logo{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,#7c3aed,#4c1d95);display:grid;place-items:center;color:#fff;font-size:14px}
.nav nav a{color:var(--m);text-decoration:none;margin-left:20px;font-size:15px}.nav nav a:hover{color:var(--t)}
.hero{padding:88px 0 64px;text-align:center;background:radial-gradient(60% 60% at 50% 0%,color-mix(in srgb,var(--p2) 16%,transparent),transparent)}
.hero h1{font-size:clamp(34px,6vw,58px);line-height:1.08;letter-spacing:-.02em;margin:0 auto 18px;max-width:820px}
.hero p.lead{font-size:clamp(17px,2.2vw,20px);color:var(--m);max-width:640px;margin:0 auto 30px}
.grad{background:linear-gradient(90deg,#7c3aed,#4f46e5);-webkit-background-clip:text;background-clip:text;color:transparent}
.pill{display:inline-block;font-size:13px;font-weight:600;color:var(--p);background:var(--pl);border:1px solid color-mix(in srgb,var(--p) 25%,transparent);padding:4px 12px;border-radius:999px;margin-bottom:20px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:11px;font-weight:600;font-size:15px;text-decoration:none;border:1px solid transparent;transition:.15s}
.btn.primary{background:var(--p2);color:#fff;box-shadow:0 6px 20px rgba(124,58,237,.3)}.btn.primary:hover{background:#6d28d9;transform:translateY(-1px)}
.btn.outline{border-color:var(--b);color:var(--t);background:var(--card)}.btn.outline:hover{border-color:var(--p)}
.ctas{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.note{font-size:14px;color:var(--m);margin-top:14px}
section{padding:64px 0}
.alt{background:var(--bg2);border-block:1px solid var(--b)}
h2.sec{font-size:clamp(26px,3.6vw,34px);letter-spacing:-.01em;text-align:center;margin:0 0 10px}
p.sub{text-align:center;color:var(--m);margin:0 auto 40px;max-width:600px}
.grid{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.card{background:var(--card);border:1px solid var(--b);border-radius:16px;padding:24px;box-shadow:var(--sh)}
.card h3{margin:12px 0 6px;font-size:18px}.card p{margin:0;color:var(--m);font-size:15px}
.ico{width:40px;height:40px;border-radius:10px;background:var(--pl);display:grid;place-items:center;color:var(--p)}
.product{display:flex;flex-direction:column;gap:6px;text-decoration:none;color:inherit;transition:.15s}
.product:hover{transform:translateY(-3px);border-color:var(--p)}
.product img{width:56px;height:56px;border-radius:14px}
.product .more{margin-top:14px;font-weight:600;color:var(--p)}
.tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:12px}.tags span{font-size:12px;padding:2px 9px;border-radius:999px;background:var(--pl);color:var(--p)}
.soon{border-style:dashed;box-shadow:none;background:transparent;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;min-height:220px}
.shots{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.shots figure{margin:0}.shots img{width:100%;height:auto;border-radius:14px;border:1px solid var(--b);box-shadow:var(--sh);display:block}
.shots figcaption{font-size:14px;color:var(--m);text-align:center;margin-top:10px}
.pricing{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));max-width:780px;margin:0 auto}
.price{position:relative;display:flex;flex-direction:column}
.price .amt{font-size:44px;font-weight:800;letter-spacing:-.02em;margin:8px 0 0}.price .amt small{font-size:16px;font-weight:500;color:var(--m)}
.price ul{list-style:none;padding:0;margin:18px 0 24px;flex:1}.price li{padding:6px 0 6px 28px;position:relative}
.price li:before{content:"✓";position:absolute;left:0;color:var(--p2);font-weight:700}
.price.pro{border:2px solid var(--p2);box-shadow:0 12px 40px rgba(124,58,237,.18)}
.ribbon{position:absolute;top:-13px;left:24px;background:var(--p2);color:#fff;font-size:12px;font-weight:700;padding:3px 12px;border-radius:999px}
.strike{text-decoration:line-through;color:var(--m);font-size:20px;font-weight:600;margin-left:8px}
.steps{counter-reset:s;display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.steps .card{counter-increment:s}.steps .card:before{content:counter(s);display:grid;place-items:center;width:32px;height:32px;border-radius:50%;background:var(--p2);color:#fff;font-weight:700}
.callout{max-width:780px;margin:0 auto 32px;border:1px solid color-mix(in srgb,var(--p) 35%,transparent);background:var(--pl);border-radius:16px;padding:20px 24px}
.callout h3{margin:0 0 6px}
.faq{max-width:780px;margin:0 auto}
.faq details{background:var(--card);border:1px solid var(--b);border-radius:12px;padding:16px 20px;margin-bottom:12px}
.faq summary{font-weight:600;cursor:pointer;list-style:none;display:flex;justify-content:space-between}.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";color:var(--p);font-size:20px;line-height:1}.faq details[open] summary:after{content:"–"}
.faq p{color:var(--m);margin:10px 0 0}
kbd,code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em;background:var(--pl);padding:1px 6px;border-radius:5px}
footer{border-top:1px solid var(--b);padding:32px 0;color:var(--m);font-size:14px}
footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
footer a{color:var(--m);text-decoration:none;margin-right:16px}footer a:hover{color:var(--p)}
.doc{max-width:760px;margin:0 auto;padding:56px 24px 72px}
.doc h1{font-size:clamp(30px,5vw,42px);letter-spacing:-.02em;margin:0 0 4px}
.doc .upd{color:var(--m);margin-top:0}
.doc h2{margin-top:40px;padding-top:20px;border-top:1px solid var(--b);font-size:22px}
.doc h3{font-size:17px;margin:24px 0 4px}.doc p{margin:6px 0}
@media (max-width:600px){.wrap{padding:0 18px}.hero{padding:56px 0 44px}section{padding:48px 0}.nav nav a{margin-left:14px;font-size:14px}.nav nav .hide-sm{display:none}.btn{width:100%}.ctas{flex-direction:column}}
.lang{margin-left:18px;height:32px;max-width:120px;border:1px solid var(--b);border-radius:8px;background:var(--card);color:var(--t);font:inherit;font-size:14px;padding:0 6px;cursor:pointer}
.nav nav{display:flex;align-items:center;min-width:0}.brand{min-width:0;flex:0 1 auto;overflow:hidden}.nav nav{flex:0 0 auto}.brand .bt{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.langbar{display:flex;align-items:center;justify-content:center;gap:12px;padding:8px 16px;background:var(--pl);border-bottom:1px solid var(--b);font-size:14px;text-align:center}
.langbar a{font-weight:600}.langbar button{border:0;background:transparent;color:var(--m);font-size:20px;line-height:1;cursor:pointer;padding:0 4px}
.lnote{background:var(--pl);border:1px solid color-mix(in srgb,var(--p) 30%,transparent);border-radius:12px;padding:12px 16px;margin:0 0 24px;font-size:15px}
h1,h2,h3,summary,.btn,p,li{overflow-wrap:anywhere;hyphens:auto}
@media (max-width:600px){.lang{margin-left:12px;max-width:96px}.btn{height:auto;min-height:46px;padding:10px 18px;text-align:center}.nav .wrap{gap:10px}}
/* site-polish */
body{text-rendering:optimizeLegibility}
:focus-visible{outline:2px solid var(--p2);outline-offset:2px;border-radius:6px}
.skip{position:absolute;left:-9999px;top:12px;z-index:100;background:var(--p);color:#fff;padding:10px 18px;border-radius:999px;font-weight:600;font-size:14px;line-height:1.2;text-decoration:none;box-shadow:0 8px 24px rgba(109,40,217,.35);}.skip:focus,.skip:focus-visible{left:16px;outline:3px solid #fff;outline-offset:-5px;color:#fff;text-decoration:none}
.hero h1{text-wrap:balance}.hero p.lead,p.sub{text-wrap:pretty}
.hero-icon{border-radius:18px;margin-bottom:18px}
.narrow{max-width:760px}.center{text-align:center}
.grid.two{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));max-width:900px;margin:0 auto}
.grid.three{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.card h3{line-height:1.3}
.phead{display:flex;align-items:center;gap:14px}.phead h3{margin:0}.kicker{font-size:13px!important;color:var(--m);margin:2px 0 0!important}
.product>p{margin-top:12px}
.checks{list-style:none;padding:0;margin:0 auto 24px;max-width:620px;display:grid;gap:10px}
.checks li{position:relative;padding:12px 16px 12px 44px;background:var(--card);border:1px solid var(--b);border-radius:12px}
.checks li:before{content:"✓";position:absolute;left:16px;top:12px;color:var(--p2);font-weight:700}
.steps.three{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));margin-bottom:40px}
.steps .card h3{margin-top:14px}
.plat .card{text-align:center}.plat .card p{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}
.pnote{font-size:14px!important;color:var(--m);margin:4px 0 0!important}
.price .amt{font-size:34px}
.tablewrap{max-width:780px;margin:40px auto 0;overflow-x:auto;border:1px solid var(--b);border-radius:16px;background:var(--card)}
table.compare{width:100%;border-collapse:collapse;font-size:15px}
.compare caption{font-weight:700;text-align:left;padding:16px 18px 8px}
.compare th,.compare td{padding:12px 18px;border-top:1px solid var(--b);text-align:center}
.compare th[scope=row]{text-align:left;font-weight:500}
.compare thead th{font-weight:700;border-top:0}
.compare td.y{color:var(--p2);font-weight:700}.compare td.n{color:var(--m)}
.compare tr.up th,.compare tr.up td{color:var(--m)}
.badge{display:inline-block;font-size:11px;font-weight:600;padding:1px 8px;border-radius:999px;background:var(--pl);color:var(--p);margin-left:6px;vertical-align:1px}
.faq{margin-top:32px}
footer .wrap{align-items:flex-start}footer strong{color:var(--t);display:block;margin-bottom:4px}
footer nav a{margin:0 0 0 16px}
@media (max-width:600px){.compare th,.compare td{padding:10px 10px;font-size:14px}footer nav a{margin:0 16px 0 0}.price .amt{font-size:30px}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* brand header (hezien mark + wordmark) */
.brand{gap:11px;border-radius:10px;padding:4px 6px 4px 0;margin-left:-2px}
.brand .mark{flex:0 0 auto;width:32px;height:32px;border-radius:9px;box-shadow:0 2px 8px rgba(109,40,217,.28);transition:transform .25s cubic-bezier(.2,.8,.2,1),box-shadow .25s}
.brand .bt{display:flex;align-items:baseline;gap:6px;line-height:1}
.brand .bt b{font-size:20px;font-weight:750;letter-spacing:-.025em;color:var(--t)}
.brand .bt i{font-style:normal;font-size:13px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--p);opacity:.8}
.brand:hover .mark,.brand:focus-visible .mark{transform:rotate(-6deg) scale(1.06);box-shadow:0 6px 16px rgba(109,40,217,.38)}
.brand:hover .bt i{opacity:1}
.sr{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
@media (prefers-reduced-motion:reduce){.brand .mark{transition:none}.brand:hover .mark,.brand:focus-visible .mark{transform:none}}
@media (max-width:600px){.brand{gap:9px}.brand .mark{width:30px;height:30px}.brand .bt b{font-size:18px}.brand .bt i{font-size:11px;letter-spacing:.12em}}
@media (max-width:360px){.brand .bt i{display:none}}
.brand{overflow:visible}

/* brand header aligned with brand-guide v0.1 */
.brand{gap:10px;min-height:44px;padding:0 6px 0 0}
.brand .mark{width:32px;height:32px;border-radius:7px}
.brand .bt{gap:6px}
.brand .bt b{font-size:17px;font-weight:700;letter-spacing:-.01em}
.brand .bt i{font-size:10.5px;font-weight:600;letter-spacing:.12em;opacity:1}
html[lang^="zh"] .brand .bt b{font-size:16px;letter-spacing:0}
@media (max-width:600px){.brand{gap:10px}.brand .mark{width:32px;height:32px}.brand .bt b{font-size:17px}.brand .bt i{font-size:10.5px;letter-spacing:.12em}}
@media (max-width:419px){.brand .bt i{display:none}}
@media (max-width:419px){.nav .wrap{gap:6px}.brand{flex:0 0 auto;overflow:visible}.brand .bt{overflow:visible;text-overflow:clip}.nav nav a{margin-left:10px}.lang{margin-left:8px;max-width:96px}}
@media (max-width:359px){.lang{font-size:13px;padding:0 2px;max-width:92px}}
@media (max-width:339px){.nav nav a:not(.lang){display:none}.lang{margin-left:0}}
@media (max-width:379px){html[lang^="zh"] .nav nav a:not(.lang){display:none}html[lang^="zh"] .lang{margin-left:0}}