:root{--brand:#0E7490;--ink:#14131F;--bg:#F7F7FB;--line:#E4E2F2;--line2:#D8D6EA;--mute:#55546B;--tint:#E0F4F8;--tint-ink:#0C4A5E;--ok-bg:#E3F5EC;--ok:#0B6B4A;--warn-bg:#FFF1D6;--warn:#5A3600;--bad:#9B1C1C;--soon-bg:#E0F4F8;--card:#fff}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:'Inter','Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;line-height:1.5}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
h1,h2,h3{font-family:'Space Grotesk','Noto Sans SC',sans-serif;margin:0;letter-spacing:-.02em}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
.wrap-s{max-width:1000px;margin:0 auto;padding:0 24px}
.wrap-xs{max-width:760px;margin:0 auto;padding:0 24px}
/* header */
.hd{position:relative}
.hd-in{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:8px 24px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:10px;font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:22px;letter-spacing:-.5px}
.logo b{color:var(--brand);font-weight:700}
.nav{display:flex;align-items:center;gap:4px 8px;flex-wrap:wrap}
.nav a,.nav button.nl{height:44px;padding:0 14px;display:flex;align-items:center;gap:6px;font-size:15px;font-weight:500;border:0;background:none;color:inherit}
.nav a.on{color:var(--brand);font-weight:600}
.nav .sub{color:var(--mute)}
.menu-btn{display:none;width:44px;height:44px;border:1px solid var(--line2);border-radius:12px;background:#fff;align-items:center;justify-content:center}
@media(max-width:720px){.menu-btn{display:flex}.nav{display:none;width:100%;flex-direction:column;align-items:stretch;padding-bottom:12px}.nav.open{display:flex}.nav a,.nav button.nl{border-bottom:1px solid var(--line);border-radius:0}.wrap,.wrap-s,.wrap-xs{padding:0 20px}}
/* buttons */
.btn{height:52px;padding:0 28px;display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:14px;font-size:16px;font-weight:600;border:1px solid transparent;cursor:pointer}
.btn-p{background:var(--brand);color:#fff}
.btn-o{background:#fff;border-color:var(--line2);color:var(--ink)}
.btn-d{background:var(--ink);color:#fff}
.btn-w{background:#fff;color:var(--ink)}
.btn-s{height:44px;padding:0 18px;font-size:14px;border-radius:12px}
.btn[aria-disabled=true]{opacity:.55;pointer-events:none}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid #67C4D8;outline-offset:2px}
/* chips */
.chip{height:26px;padding:0 10px;display:inline-flex;align-items:center;border-radius:13px;font-size:12px;background:#F1F0F8;color:#3F3E55;white-space:nowrap}
.chip.ok{background:var(--ok-bg);color:var(--ok);font-weight:600}
.chip.warn{background:var(--warn-bg);color:#7A4A00;font-weight:600}
.chip.soon{background:var(--soon-bg);color:var(--tint-ink);font-weight:600}
.chip.dark{background:var(--ink);color:#fff;font-weight:600}
.pill{display:inline-flex;align-items:center;height:34px;padding:0 14px;border-radius:17px;background:var(--tint);color:var(--tint-ink);font-size:13px;font-weight:600}
.pill i{width:7px;height:7px;border-radius:4px;background:var(--brand);margin-right:8px}
/* hero */
.hero{padding:56px 0 0;text-align:center}
.hero h1{font-size:56px;line-height:1.12;margin-top:18px;letter-spacing:-1.6px}
.hero h1 span{color:var(--brand)}
.hero p.lead{margin:16px auto 0;max-width:620px;font-size:18px;line-height:1.6;color:var(--mute)}
.sbox{margin:28px auto 0;max-width:720px;padding:8px;background:#fff;border:1px solid var(--line2);border-radius:20px;box-shadow:0 8px 24px rgba(14,116,144,.10);display:flex;gap:8px;align-items:center}
.sbox label{flex:1;display:flex;align-items:center;gap:10px;padding:0 10px;min-width:0}
.sbox input{flex:1;min-width:0;height:52px;border:0;outline:0;background:transparent;font-family:inherit;font-size:17px;color:var(--ink)}
.sbox input::placeholder{color:#6B6A80}
.sbox .btn{height:52px;padding:0 26px}
.chips-row{margin-top:14px;display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px}
.chips-row span{font-size:13px;color:var(--mute)}
.chips-row button{height:44px;padding:0 16px;border:1px solid var(--line2);border-radius:22px;background:#fff;font-size:14px;font-weight:500}
.quota{margin-top:10px;font-size:13px;color:var(--mute)}
@media(max-width:720px){.hero{padding-top:36px}.hero h1{font-size:36px;letter-spacing:-1px}.hero p.lead{font-size:16px}.sbox{flex-direction:column;align-items:stretch}.sbox .btn{width:100%}}
/* sections */
.sec{padding-top:56px}
.sec h2{font-size:28px;letter-spacing:-.6px}
.sec .sub{margin:6px 0 0;font-size:15px;color:var(--mute)}
.band{margin-top:56px;padding:56px 0;background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.card{padding:22px;background:#fff;border:1px solid var(--line);border-radius:20px}
.card h3{font-size:17px;font-weight:600;letter-spacing:0;font-family:inherit}
.card p{margin:6px 0 0;font-size:14px;line-height:1.6;color:var(--mute)}
.num{width:36px;height:36px;border-radius:18px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font:700 16px 'Space Grotesk',sans-serif;flex:none}
.cats{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}
.cat{display:flex;align-items:center;gap:12px;min-height:72px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:16px;text-align:left;font-size:16px;font-weight:600;cursor:pointer;width:100%}
.cat .ic{width:40px;height:40px;border-radius:12px;background:var(--tint);display:flex;align-items:center;justify-content:center;flex:none}
.cat small{display:block;font-weight:400;font-size:12px;color:var(--mute)}
.cat[aria-pressed=true]{border:2px solid var(--brand)}
/* bot cards */
.bots{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px;margin-top:22px}
.bot{padding:20px;background:#fff;border:1px solid var(--line);border-radius:20px;display:flex;flex-direction:column}
.bot-top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.ico{width:48px;height:48px;border-radius:14px;background:var(--tint);display:flex;align-items:center;justify-content:center;flex:none}
.bot h3{margin-top:14px;font-size:18px;font-weight:600;letter-spacing:0;font-family:inherit}
.bot p{margin:6px 0 0;font-size:14px;line-height:1.6;color:var(--mute);flex:1}
.bot .meta{margin-top:10px;font-size:12px;color:var(--mute)}
.bot .tags{margin-top:12px;display:flex;flex-wrap:wrap;gap:6px}
.bot .act{margin-top:16px;display:flex;gap:8px}
.bot .act .btn-p,.bot .act .btn-soon{flex:1}
.btn-soon{background:#F1F0F8;color:var(--mute);border-color:var(--line2)}
.empty{margin-top:22px;padding:28px;background:#fff;border:1px dashed var(--line2);border-radius:20px;text-align:center;color:var(--mute)}
.note{margin-top:14px;padding:12px 16px;border-radius:14px;background:var(--warn-bg);color:var(--warn);font-size:14px;line-height:1.6}
.hidden{display:none!important}
/* pro/dev banners */
.dark-cta{padding:32px;background:var(--ink);color:#fff;border-radius:24px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px 24px}
.dark-cta h3{font-size:24px;font-family:'Space Grotesk','Noto Sans SC',sans-serif}
.dark-cta p{margin:6px 0 0;color:#C9C8DC;font-size:15px}
.pro-box{padding:28px;background:var(--tint);border-radius:24px}
/* lists */
.ticks{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.ticks li{display:flex;gap:10px;align-items:flex-start;font-size:15px;line-height:1.55}
.ticks li svg{flex:none;margin-top:3px}
/* detail */
.dh{display:flex;gap:16px;align-items:center}
.dh .ico{width:72px;height:72px;border-radius:20px}
.dh h1{font-size:32px;line-height:1.2}
.dh .by{margin-top:6px;font-size:14px;color:var(--mute)}
.dgrid{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:32px;margin-top:28px;align-items:start}
.side{position:sticky;top:16px;display:flex;flex-direction:column;gap:12px}
.side-cta{display:flex;flex-direction:column;gap:12px}
@media(max-width:900px){.dgrid{grid-template-columns:1fr}.side{display:contents}.side-cta{order:-1}.side-about{order:2}}
.box{padding:16px;background:#fff;border:1px solid var(--line);border-radius:16px}
.box h4{margin:0;font-size:13px;color:var(--mute);font-weight:600}
.kv{margin-top:12px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.kv div small{display:block;font-size:12px;color:var(--mute)}
.kv div b{font-size:14px;font-weight:600}
.dsec{margin-top:28px}
.dsec h2{font-size:20px}
.prompt{display:flex;align-items:center;gap:12px;padding:12px 8px 12px 16px;background:#fff;border:1px solid var(--line);border-radius:16px;margin-top:10px}
.prompt span{flex:1;min-width:0;font-size:15px;line-height:1.5}
.prompt button{flex:none;width:44px;height:44px;border:0;border-radius:12px;background:var(--tint);display:flex;align-items:center;justify-content:center}
.crumb{display:inline-flex;align-items:center;height:44px;font-size:14px;color:var(--mute)}
/* faq */
.faq{padding:18px 20px;background:var(--bg);border-radius:16px}
.faq.w{background:#fff;border:1px solid var(--line)}
.faq b{display:block;font-size:16px}
.faq p{margin:6px 0 0;font-size:14px;line-height:1.65;color:var(--mute)}
/* pricing */
.toggle{display:inline-flex;padding:4px;background:#fff;border:1px solid var(--line2);border-radius:16px;gap:4px}
.toggle button{height:44px;padding:0 20px;border:0;border-radius:12px;background:transparent;color:var(--ink);font-size:15px;font-weight:600;display:flex;align-items:center;gap:8px}
.toggle button[aria-pressed=true]{background:var(--ink);color:#fff}
.plans{display:flex;flex-wrap:wrap;gap:24px;max-width:900px;margin:36px auto 0;align-items:stretch}
.plan{flex:1 1 340px;min-width:0;padding:32px;background:#fff;border:1px solid var(--line);border-radius:28px;display:flex;flex-direction:column}
.plan.pro{border:2px solid var(--brand);box-shadow:0 16px 40px rgba(14,116,144,.14)}
.price{margin-top:14px;display:flex;align-items:baseline;gap:6px}
.price b{font:700 44px 'Space Grotesk','Noto Sans SC',sans-serif;letter-spacing:-1px}
.price span{font-size:15px;color:var(--mute)}
.plan .ticks{margin-top:22px;flex:1}
.plan .btn{margin-top:28px}
/* footer */
.ft{padding:48px 0 40px}
.ft .wrap{border-top:1px solid var(--line);padding-top:24px}
.ft p{margin:0;max-width:600px;font-size:13px;line-height:1.6;color:var(--mute)}
.ft nav{margin-top:12px;display:flex;flex-wrap:wrap;gap:4px 16px}
.ft nav a{height:44px;display:flex;align-items:center;font-size:13px;color:var(--mute)}
/* modal */
.modal{position:fixed;inset:0;background:rgba(20,19,31,.55);display:none;align-items:flex-end;justify-content:center;z-index:50}
.modal.open{display:flex}
.sheet{width:100%;max-width:480px;max-height:90vh;overflow:auto;background:#fff;border-radius:24px 24px 0 0;padding:16px 20px 24px}
@media(min-width:721px){.modal{align-items:center}.sheet{border-radius:24px}}
.sheet h2{font-size:20px}
.lang{display:flex;align-items:center;justify-content:space-between;height:52px;padding:0 16px;margin-top:6px;border:1px solid var(--line);border-radius:14px;font-size:16px;font-weight:500;width:100%;background:#fff;text-align:left}
.lang[aria-current=true]{background:var(--tint);border-color:var(--brand);font-weight:600}
.lang small{color:var(--mute);font-size:12px}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--ink);color:#fff;padding:12px 18px;border-radius:14px;font-size:14px;z-index:60;max-width:90vw}
.card,.pro-box{min-width:0;max-width:100%}.chip{white-space:normal;height:auto;min-height:26px;padding-top:3px;padding-bottom:3px;line-height:1.3}