:root {
  color-scheme:light;
  --space-1:4px; --space-2:8px; --space-3:12px; --space-4:16px; --space-5:24px; --space-6:32px; --space-7:48px;
  --section-space:clamp(56px,7vw,88px); --card-space:clamp(24px,2.8vw,32px);
  --text-small:12px; --text-label:14px; --text-body:16px; --radius:24px; --ease:cubic-bezier(.2,.7,.3,1);
  --bg:#f5f6f8; --surface:#fff; --soft:#ececf2; --ink:#111116; --muted:#5e5e6a; --line:#d9d9e2;
  --green:#007f44; --on-green:#fff; --blue:#006dff; --violet:#7628ef; --orange:#b54700;
  --green-bg:#e6f8ee; --blue-bg:#e9f2ff; --violet-bg:#f2eaff; --orange-bg:#fff0e5;
  --on-color:#fff; --shadow:0 18px 60px #13131a0b; --logo-filter:invert(1);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans SC",sans-serif;
  color:var(--ink); background:var(--bg); -webkit-font-smoothing:antialiased;
}
:root[data-theme="dark"] {
  color-scheme:dark;
  --bg:#05050a; --surface:#15151e; --soft:#272733; --ink:#fff; --muted:#b7b7c2; --line:#3d3d4b;
  --green:#00f08a; --on-green:#00140b; --blue:#2997ff; --violet:#c66dff; --orange:#ff9d00;
  --green-bg:#052018; --blue-bg:#07192b; --violet-bg:#1c0d29; --orange-bg:#291800;
  --on-color:#090910; --shadow:0 18px 60px #00000040; --logo-filter:none;
}
@media(prefers-color-scheme:dark) {
  :root:not([data-theme="light"]) {
    color-scheme:dark;
    --bg:#05050a; --surface:#15151e; --soft:#272733; --ink:#fff; --muted:#b7b7c2; --line:#3d3d4b;
    --green:#00f08a; --on-green:#00140b; --blue:#2997ff; --violet:#c66dff; --orange:#ff9d00;
    --green-bg:#052018; --blue-bg:#07192b; --violet-bg:#1c0d29; --orange-bg:#291800;
    --on-color:#090910; --shadow:0 18px 60px #00000040; --logo-filter:none;
  }
}
* { box-sizing:border-box; }
html { scroll-behavior:smooth; scroll-padding-top:28px; }
body { margin:0; min-width:300px; font-size:var(--text-body); line-height:1.75; }
::selection { background:var(--green); color:var(--on-green); }
a { color:var(--blue); text-underline-offset:4px; text-decoration-thickness:1px; }
img { max-width:100%; height:auto; }
button,input,select { font:inherit; }
button,a,input,select,summary { -webkit-tap-highlight-color:transparent; }
button,select,summary { cursor:pointer; }
:focus-visible { outline:3px solid var(--blue); outline-offset:4px; }
h1,h2,h3,p { margin-top:0; }
p { margin-bottom:var(--space-4); }
h1,h2,h3 { text-wrap:balance; }
p { text-wrap:pretty; }
h1,h2,h3 { color:var(--ink); letter-spacing:-.025em; }
h1 { font-size:clamp(46px,6vw,78px); line-height:1.18; font-weight:800; margin-bottom:var(--space-5); }
h2 { font-size:clamp(30px,3.5vw,44px); line-height:1.3; margin-bottom:var(--space-4); }
h3 { font-size:21px; line-height:1.4; margin-bottom:12px; }
p { line-height:1.8; color:var(--muted); }
.wrap,.site-header,.site-footer { width:min(1160px,calc(100% - 64px)); margin-inline:auto; }
.site-header { min-height:88px; display:flex; align-items:center; gap:var(--space-5); border-bottom:1px solid var(--line); position:relative; z-index:20; }
.brand { display:inline-flex; align-items:center; gap:9px; font-weight:800; font-size:27px; letter-spacing:-1.3px; color:var(--ink); text-decoration:none; flex:none; }
.brand-mark { width:38px; height:38px; border-radius:11px; overflow:hidden; display:block; }
.brand-mark img { display:block; width:100%; height:100%; filter:var(--logo-filter); }
.brand-dot { color:var(--blue); margin-left:-9px; }
.site-header nav { display:flex; gap:var(--space-2); margin-left:auto; }
.site-header nav a { display:inline-flex; align-items:center; justify-content:center; min-height:44px; padding:10px 16px; border-radius:12px; color:var(--muted); font-size:var(--text-label); font-weight:550; text-decoration:none; white-space:nowrap; transition:color .18s,background-color .18s; }
.site-header nav a[aria-current="page"] { background:var(--green-bg); color:var(--green); font-weight:700; }
.site-footer nav a[aria-current="page"] { color:var(--green); font-weight:700; text-decoration:underline; text-underline-offset:6px; }
.header-tools > a[aria-current="page"] { outline:2px solid var(--green); outline-offset:3px; }
.header-tools { display:flex; align-items:center; gap:2px; }
.language-switch,.theme-switch { display:inline-flex; align-items:center; min-height:44px; padding:0; border:0; border-radius:0; background:transparent; line-height:1; flex:none; }
.language-switch::before,.theme-switch::before { content:""; width:1px; height:16px; margin:0 8px; background:var(--line); flex:none; }
.language-switch > span { width:1px; height:16px; margin:0 7px; background:var(--line); flex:none; }
.language-switch button,.theme-switch button { position:relative; display:grid; place-items:center; min-width:36px; min-height:44px; padding:0 8px; border:0; border-radius:0; background:transparent; color:var(--muted); font-size:12px; font-weight:700; line-height:1; transition:color .18s; }
.language-switch button { min-width:29px; letter-spacing:.01em; }
.theme-switch button[data-theme-choice="system"] { min-width:42px; font-size:11px; letter-spacing:.01em; }
.theme-switch button i { font-size:15px; }
.theme-switch button + button::before { content:""; position:absolute; left:0; top:14px; width:1px; height:16px; background:var(--line); }
.language-switch button[aria-pressed="true"],.theme-switch button[aria-pressed="true"] { color:var(--green); background:transparent; box-shadow:none; }
.button { display:inline-flex; align-items:center; justify-content:center; gap:10px; min-height:50px; padding:13px 22px; border:1px solid transparent; border-radius:14px; background:var(--green); color:var(--on-green); font-weight:700; font-size:15px; line-height:1.45; text-decoration:none; transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s,color .18s; }
.button:active { transform:translateY(1px); box-shadow:none; }
.button i,.link i { width:1em; text-align:center; flex:none; font-size:.95em; line-height:1; }
.button.copied { background:var(--green); color:var(--on-green); }
.button.blue { background:var(--blue); color:var(--on-color); }
.button.violet { background:var(--violet); color:var(--on-color); }
.button.orange { background:var(--orange); color:var(--on-color); }
.button.secondary { background:var(--surface); border-color:var(--line); color:var(--ink); }
.button.small { min-height:44px; padding:10px 16px; font-size:13px; }
.button-row { display:flex; gap:var(--space-3); flex-wrap:wrap; margin-top:var(--space-5); }
.wide { width:100%; }
.eyebrow { display:flex; align-items:center; gap:8px; color:var(--green); font-size:12px; font-weight:700; letter-spacing:.07em; margin-bottom:var(--space-4); line-height:1.7; }
.eyebrow::before { content:""; width:7px; height:7px; border-radius:50%; background:currentColor; }
.lead { font-size:18px; max-width:620px; margin-bottom:0; }
.fine,.card .fine { color:var(--muted); font-size:var(--text-small); line-height:1.75; }
.hero { display:grid; grid-template-columns:1.08fr 1fr; align-items:center; gap:var(--space-7); padding:var(--section-space) 0; }
.hero h1 span { color:var(--green); }
.hero .fine { margin:20px 0 0; }
.hero-art { position:relative; padding:22px 18px 25px; }
.hero-art::before { content:""; position:absolute; inset:7% -4% 6%; border-radius:50%; background:radial-gradient(ellipse,var(--green-bg),transparent 70%); }
.phone { position:relative; width:min(296px,100%); margin:auto; padding:22px 18px 18px; border:1px solid var(--line); border-radius:36px; background:var(--surface); box-shadow:var(--shadow); transform:rotate(-3deg); }
.phone-top { display:flex; justify-content:space-between; align-items:center; font-size:12px; color:var(--muted); margin-bottom:25px; }
.phone-top .brand { font-size:22px; }
.phone h3 { font-size:24px; margin-bottom:7px; }
.phone-sub { font-size:11px; margin-bottom:19px; }
.app-tile { display:flex; align-items:center; gap:12px; padding:14px 10px; border:1px solid var(--line); border-radius:17px; margin:10px 0; }
.app-tile img,.tile-icon { width:44px; height:44px; border-radius:13px; flex:none; }
.tile-icon { display:grid; place-items:center; font-size:19px; }
.app-tile strong { font-size:13px; display:block; }
.app-tile small { color:var(--muted); font-size:10px; display:block; margin-top:6px; }
.phone-bottom { margin-top:20px; padding-top:17px; border-top:1px solid var(--line); display:flex; justify-content:space-around; color:var(--muted); font-size:16px; }
.phone-bottom i:first-child { color:var(--green); }
.float-note { position:absolute; display:flex; align-items:center; gap:10px; border:1px solid var(--line); background:var(--surface); box-shadow:var(--shadow); padding:16px 20px; border-radius:18px; font-size:12px; font-weight:650; z-index:1; }
.float-note.first { top:55px; right:-5px; transform:rotate(5deg); }
.float-note.second { bottom:58px; left:-8px; transform:rotate(3deg); }
.float-note i { color:var(--violet); }
.art-caption { text-align:center; position:relative; margin:24px 0 0; font-size:10px; }
.vibe-shift { display:grid; grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr); align-items:start; gap:var(--space-7); padding:0 0 var(--section-space); border-bottom:1px solid var(--line); }
.vibe-shift-copy { max-width:520px; }
.vibe-shift-copy h2 { font-size:clamp(30px,3.5vw,44px); margin-bottom:var(--space-4); }
.vibe-shift-copy h2 strong { color:var(--green); font-weight:800; }
.vibe-shift-copy .lead { margin:0; }
.vibe-programming-list { border-top:1px solid var(--line); }
.vibe-programming-list article { display:grid; grid-template-columns:42px minmax(0,1fr); gap:var(--space-4); padding:20px 0; border-bottom:1px solid var(--line); }
.vibe-programming-list article > span { color:var(--green); font:700 11px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace; padding-top:4px; }
.vibe-programming-list h3 { font-size:18px; margin-bottom:4px; letter-spacing:-.01em; }
.vibe-programming-list p { margin:0; font-size:14px; }
.color-green { color:var(--green); background:var(--green-bg); }
.color-blue { color:var(--blue); background:var(--blue-bg); }
.color-violet { color:var(--violet); background:var(--violet-bg); }
.color-orange { color:var(--orange); background:var(--orange-bg); }
.section { padding:var(--section-space) 0; }
.section-head { max-width:720px; margin-bottom:var(--space-6); }
.section-head > p:last-child { margin-bottom:0; }
.center { text-align:center; margin-inline:auto; }
.center .eyebrow { justify-content:center; }
.value-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:var(--space-5); }
.card { min-width:0; padding:var(--card-space); border:1px solid var(--line); border-radius:var(--radius); background:var(--surface); }
.card p:last-child { margin-bottom:0; }
.card p { font-size:var(--text-label); }
.card > :last-child { margin-bottom:0; }
.big-icon { width:52px; height:52px; border-radius:17px; display:grid; place-items:center; font-size:22px; margin-bottom:var(--space-5); }
.start-band { display:flex; align-items:center; justify-content:space-between; gap:var(--space-6); padding:var(--space-6); border:1px solid var(--line); border-radius:var(--radius); background:var(--surface); }
.start-band h2 { font-size:29px; margin-bottom:10px; }
.start-band p { margin:0; }
.split { display:grid; grid-template-columns:1fr 1fr; align-items:center; gap:var(--space-7); }
.agent-links { display:grid; grid-template-columns:1fr 1fr; gap:var(--space-3); margin:var(--space-5) 0; }
.agent-link { display:flex; align-items:center; gap:14px; min-width:0; padding:19px; background:var(--surface); border:1px solid var(--line); border-radius:19px; text-decoration:none; color:var(--ink); transition:transform .18s var(--ease),border-color .18s,box-shadow .18s; }
.agent-link:active { transform:translateY(1px); }
.agent-link img { width:56px; height:56px; object-fit:contain; flex:none; }
.agent-link strong { display:block; font-size:18px; }
.agent-link small { display:flex; align-items:center; gap:8px; font-size:var(--text-small); color:var(--muted); margin-top:4px; }
.agent-link small i { font-size:10px; }
.conversation { padding:var(--card-space); background:var(--surface); border:1px solid var(--line); border-radius:28px; box-shadow:var(--shadow); }
.conversation .label { font-size:12px; margin-bottom:24px; }
.bubble { border-radius:19px; padding:20px 23px; max-width:94%; font-size:16px; line-height:1.7; }
.bubble.you { margin-left:auto; background:var(--violet-bg); color:var(--violet); border-bottom-right-radius:5px; }
.bubble.idea { margin:18px 0; background:var(--green-bg); color:var(--green); border-bottom-left-radius:5px; }
.conversation .fine { margin:22px 0 0; }
.vibe-panel { border-block:1px solid var(--line); padding:var(--section-space) 0; background:var(--surface); }
.vibe-panel .split { grid-template-columns:1.2fr 1fr; }
.vibe-word { font-size:clamp(32px,4vw,51px); font-weight:800; line-height:1.15; letter-spacing:-2px; color:var(--violet); margin-bottom:18px; }
.final-cta { text-align:center; padding:var(--section-space) 0; }
.final-cta > .button { margin-top:var(--space-2); }
.final-cta h2 { font-size:clamp(32px,4.5vw,55px); }
.final-cta .button-row { justify-content:center; }
.site-footer { border-top:1px solid var(--line); display:flex; justify-content:space-between; gap:35px; flex-wrap:wrap; padding:35px 0; }
.site-footer p { margin:10px 0 0; font-size:12px; }
.site-footer nav { display:flex; flex-wrap:wrap; align-items:center; gap:22px; }
.site-footer nav a { display:inline-flex; align-items:center; min-height:44px; font-size:var(--text-small); color:var(--muted); text-decoration:none; }
.page-hero { padding:var(--section-space) 0 var(--space-7); }
.page-hero h1 { font-size:clamp(38px,5vw,62px); }
.page-hero .lead { max-width:740px; }
.guide-start { display:grid; grid-template-columns:.8fr 1.2fr; gap:var(--space-5); margin-bottom:var(--section-space); align-items:stretch; }
.step-label { font-size:12px; font-weight:750; color:var(--green); letter-spacing:.5px; margin-bottom:18px; }
.guide-start h2 { font-size:27px; }
.guide-start .card { padding:var(--card-space); }
.guide-start .button-row { margin-bottom:var(--space-4); }
.guide-download-actions { display:grid; grid-template-columns:minmax(0,1fr) 164px; gap:var(--space-5); align-items:center; margin-top:var(--space-5); }
.guide-download-actions .button-row { margin-top:0; }
.guide-download-actions .fine { margin:0; }
.guide-download-qr { display:grid; justify-items:center; gap:7px; min-width:0; padding-left:var(--space-4); border-left:1px solid var(--line); text-align:center; }
.guide-download-qr img { display:block; width:156px; height:156px; border:1px solid var(--line); border-radius:16px; background:#fff; image-rendering:pixelated; }
.guide-download-qr strong { color:var(--ink); font-size:12px; line-height:1.4; }
.guide-download-qr p { margin:0; color:var(--muted); font-size:11px; line-height:1.5; }
.start-icon { display:block; width:78px; height:78px; border-radius:23px; margin:18px 0 24px; filter:var(--logo-filter); }
.app-heading { display:flex; align-items:center; gap:15px; margin:10px 0 24px; }
.app-heading img { width:62px; height:62px; border-radius:18px; }
.app-heading h2,.app-heading h3 { margin:0 0 var(--space-1); }
.app-heading p { margin:0; font-size:12px; }
.app-title-row { display:flex; align-items:center; gap:10px; }
.app-title-row h2 { margin:0; }
.app-github { display:inline-flex; align-items:center; gap:7px; min-height:36px; padding:0 8px; border-radius:9px; color:var(--muted); font-size:12px; font-weight:700; text-decoration:none; white-space:nowrap; transition:color .18s,background-color .18s; }
.app-github i { font-size:20px; }
.qr-install { display:grid; grid-template-columns:172px 1fr; gap:25px; align-items:center; margin:26px 0; }
.qr { display:block; width:172px; height:172px; padding:0; background:#fff; border:1px solid var(--line); border-radius:15px; image-rendering:pixelated; }
.qr-steps { margin:0; padding-left:21px; color:var(--ink); font-size:14px; line-height:1.8; }
.qr-steps li+li { margin-top:10px; }
.copy-field { display:flex; gap:9px; align-items:center; margin-top:10px; }
.copy-field input { min-height:44px; min-width:0; width:100%; padding:12px; background:var(--bg); color:var(--muted); border:1px solid var(--line); border-radius:12px; font-size:12px; }
.copy-field .button { flex:none; }
.copy-status { min-height:20px; margin:8px 0 0!important; font-size:12px!important; color:var(--green); }
.guide-deep { padding:var(--space-7) 0; border-top:1px solid var(--line); }
.guide-deep .split { align-items:start; gap:var(--space-7); }
.mini-steps { margin:0 0 var(--space-5); padding-left:23px; color:var(--muted); font-size:15px; line-height:1.85; }
.mini-steps li { padding-left:5px; margin-bottom:10px; }
.mini-steps strong { color:var(--ink); }
.quote-example { padding:26px; border-radius:22px; background:var(--blue-bg); color:var(--blue); font-size:22px; font-weight:650; line-height:1.7; margin:0; }
.quote-example + .fine { margin-top:var(--space-4); }
.idea-examples { display:flex; flex-wrap:wrap; gap:9px; margin:20px 0; }
.idea-examples span { padding:8px 12px; font-size:12px; border-radius:10px; background:var(--soft); color:var(--muted); }
.download-layout { display:grid; grid-template-columns:1.05fr .95fr; gap:42px; align-items:center; padding-bottom:var(--section-space); }
.download-card { padding:var(--card-space); }
.download-card .app-heading { margin-bottom:28px; }
.download-card .app-heading img { filter:var(--logo-filter); }
.download-card h2 { font-size:29px; margin-bottom:8px; }
.download-card .fine { margin:16px 0 0; }
.download-actions { display:grid; grid-template-columns:minmax(0,1fr) 150px; gap:var(--space-5); align-items:center; margin-top:var(--space-5); }
.download-primary { min-width:0; }
.download-primary .link { margin-top:var(--space-1); }
.download-qr { display:grid; justify-items:center; gap:11px; min-width:0; padding-left:var(--space-5); border-left:1px solid var(--line); text-align:center; }
.download-qr img { display:block; width:140px; height:140px; border:1px solid var(--line); border-radius:15px; background:#fff; image-rendering:pixelated; }
.download-qr strong { display:block; color:var(--ink); font-size:13px; line-height:1.5; }
.download-qr p { margin:4px 0 0; color:var(--muted); font-size:11px; line-height:1.6; }
.download-next { padding:20px; }
.download-next h2 { font-size:28px; }
.download-next p { font-size:15px; }
.download-next .button + .fine { margin-top:var(--space-4); }
.faq-layout { display:grid; grid-template-columns:190px minmax(0,1fr); gap:48px; padding-bottom:var(--section-space); }
.contents { position:sticky; top:24px; align-self:start; display:grid; gap:7px; }
.contents a { display:flex; align-items:center; min-height:44px; font-size:13px; color:var(--muted); text-decoration:none; padding:10px 12px; border-radius:12px; }
.contents a:hover { background:var(--soft); color:var(--ink); }
.search-label { display:block; margin-bottom:var(--space-5); }
.search-label span { display:block; font-size:13px; margin-bottom:10px; color:var(--muted); }
.search-label input { width:100%; min-height:50px; border:1px solid var(--line); border-radius:14px; padding:13px 16px; color:var(--ink); background:var(--surface); }
.faq-group { margin-bottom:var(--space-7); }
.faq-group h2 { font-size:25px; }
.faq-group details { border-bottom:1px solid var(--line); }
.faq-group summary { position:relative; list-style:none; min-height:64px; padding:20px 32px 20px 0; color:var(--ink); font-size:15px; font-weight:600; line-height:1.65; }
.faq-group summary::-webkit-details-marker { display:none; }
.faq-group summary::after { content:""; position:absolute; right:6px; top:27px; width:7px; height:7px; border-right:1.5px solid currentColor; border-bottom:1.5px solid currentColor; transform:rotate(45deg); transition:transform .18s; color:var(--muted); }
.faq-group details[open] summary::after { transform:rotate(225deg); top:30px; color:var(--green); }
.faq-group details p,.faq-group details li { font-size:14px; color:var(--muted); line-height:1.9; }
.faq-group details[open] { padding-bottom:var(--space-5); }
.faq-group details[open] summary { color:var(--green); }
.faq-group details p:last-child { margin-bottom:0; }
code { overflow-wrap:anywhere; font-size:.9em; }
.hash { display:block; padding:14px; background:var(--soft); border-radius:12px; font:12px/1.7 ui-monospace,monospace; overflow-wrap:anywhere; margin:14px 0; }
.prose { max-width:780px; padding-bottom:75px; }
.prose section { padding:var(--space-6) 0; border-bottom:1px solid var(--line); }
.prose h2 { font-size:25px; }
.prose p { font-size:15px; }
.support-grid { margin-bottom:var(--space-7); }
.support-grid .card { display:flex; flex-direction:column; align-items:flex-start; }
.support-grid .button { margin-top:auto; }
.link { display:inline-flex; min-height:44px; gap:var(--space-2); align-items:center; font-weight:650; font-size:var(--text-label); padding:10px 0; text-decoration:none; }
.skip { position:fixed; top:-100px; left:15px; padding:12px; background:var(--surface); z-index:100; }
.skip:focus { top:15px; }
.sr-only { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }
[hidden] { display:none!important; }
.happ-list { display:grid; grid-template-columns:repeat(auto-fit,minmax(330px,1fr)); gap:var(--space-5); margin-bottom:var(--space-7); }
.happ-card .app-heading { margin:0; }
.happ-card .app-heading img { width:56px; height:56px; border-radius:16px; }
.happ-desc { margin:var(--space-4) 0 0; color:var(--muted); font-size:14px; line-height:1.7; }
.happ-actions { display:flex; flex-wrap:wrap; gap:9px; margin-top:var(--space-4); }
.happ-actions .app-github { display:none; }
:root[lang="en"] .lang-zh { display:none; }
:root[lang="zh-CN"] .lang-en { display:none; }
@media(max-width:760px) { .happ-list { grid-template-columns:1fr; } }
@media(max-width:1000px) {
  .site-header { gap:16px; }.site-header nav { gap:4px; }.site-header nav a { padding-inline:12px; }
  .hero { gap:28px; }.float-note.first { right:-4px; top:24px; }.float-note.second { left:-8px; bottom:43px; }
  .vibe-shift { grid-template-columns:1fr; gap:var(--space-6); }
  .split { gap:var(--space-6); }.agent-link { gap:var(--space-3); padding:var(--space-4); }.agent-link img { width:42px; height:42px; }.agent-link strong { font-size:16px; }
  .qr-install { grid-template-columns:150px 1fr; gap:18px; }.qr { width:150px; height:150px; }
  .guide-download-actions { grid-template-columns:1fr; }.guide-download-qr { grid-template-columns:156px minmax(0,1fr); justify-items:start; align-items:center; padding:var(--space-5) 0 0; border-left:0; border-top:1px solid var(--line); text-align:left; }
}
@media(max-width:760px) {
  .wrap,.site-header,.site-footer { width:calc(100% - 36px); }
  .site-header { flex-wrap:wrap; gap:8px; padding:16px 0 12px; }.header-tools { margin-left:auto; }.site-header nav { order:3; display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); margin:8px 0 0; width:100%; gap:4px; }.site-header nav a { font-size:13px; padding:10px 4px; }
  .hero,.split,.vibe-panel .split,.guide-start,.guide-deep .split,.download-layout { grid-template-columns:1fr; }
  .hero { padding:var(--section-space) 0; gap:var(--space-6); }.hero h1 { font-size:clamp(46px,11vw,66px); }.lead { font-size:16px; }
  .hero-art { max-width:440px; width:100%; margin:auto; }.phone { width:min(280px,100%); }.float-note { padding:12px 15px; font-size:11px; }.float-note.first { right:0; }.float-note.second { left:0; }
  .value-grid { grid-template-columns:1fr; }.big-icon { margin-bottom:var(--space-5); }
  .start-band { flex-direction:column; align-items:flex-start; padding:var(--space-5); gap:var(--space-5); }
  .agent-links { max-width:470px; }.agent-link img { width:46px; height:46px; }
  .vibe-panel .split { gap:var(--space-5); }
  .site-footer { gap:23px; }.site-footer nav { gap:14px 22px; }
  .page-hero { padding:var(--space-7) 0 var(--space-6); }.page-hero h1 { font-size:clamp(36px,9vw,54px); }
  .guide-start { gap:var(--space-4); margin-bottom:var(--space-7); }.start-icon { width:62px; height:62px; }
  .qr-install { grid-template-columns:150px 1fr; gap:var(--space-5); }.guide-deep { padding:var(--space-7) 0; }.guide-deep .split { gap:var(--space-5); }
  .download-layout { gap:var(--space-5); }.download-next { padding:var(--space-2) 0; }
  .faq-layout { grid-template-columns:1fr; gap:var(--space-5); }.contents { position:static; display:flex; flex-wrap:wrap; gap:var(--space-2); }.contents a { background:var(--surface); }.faq-group { margin-bottom:var(--space-6); }
}
@media(max-width:520px) { .download-actions { grid-template-columns:1fr; }.download-qr { grid-template-columns:140px minmax(0,1fr); justify-items:start; align-items:center; padding:var(--space-5) 0 0; border-left:0; border-top:1px solid var(--line); text-align:left; } }
@media(max-width:460px) { .header-tools { order:2; width:100%; margin:0; justify-content:space-between; }.qr-install { grid-template-columns:1fr; }.qr { width:180px; height:180px; margin:auto; }.download-qr { grid-template-columns:120px minmax(0,1fr); }.download-qr img { width:120px; height:120px; }.guide-download-actions { grid-template-columns:1fr; }.guide-download-qr { grid-template-columns:132px minmax(0,1fr); justify-items:start; align-items:center; padding:var(--space-4) 0 0; border-left:0; border-top:1px solid var(--line); text-align:left; }.guide-download-qr img { width:132px; height:132px; } }
@media(max-width:380px) {
  .brand { font-size:23px; }.brand-mark { width:32px; height:32px; }.header-tools { gap:0; }.header-tools .button { padding:9px 10px; }.language-switch::before,.theme-switch::before { margin-inline:5px; }.language-switch > span { margin-inline:5px; }.theme-switch button { min-width:32px; }.theme-switch button[data-theme-choice="system"] { min-width:38px; }
  .agent-links { grid-template-columns:1fr; }.qr-install { grid-template-columns:1fr; }.qr { width:180px; height:180px; margin:auto; }.float-note { font-size:10px; }
  .copy-field { flex-wrap:wrap; }.copy-field .button { width:100%; }
}
@media(hover:hover) {
  .site-header nav a:not([aria-current]):hover { background:var(--soft); color:var(--ink); }
  .language-switch button:not([aria-pressed="true"]):hover,.theme-switch button:not([aria-pressed="true"]):hover { background:transparent; color:var(--ink); }
  .app-github:hover { color:var(--ink); background:var(--soft); }
  .button:hover { transform:translateY(-1px); box-shadow:var(--shadow); }
  .button:active { transform:translateY(1px); box-shadow:none; }
  .agent-link:hover { transform:translateY(-2px); border-color:var(--violet); box-shadow:var(--shadow); }
  .link:hover,.site-footer nav a:hover { text-decoration:underline; text-underline-offset:5px; }
  .faq-group summary:hover { color:var(--green); }
}
@media(prefers-reduced-motion:reduce) { html { scroll-behavior:auto; }.button,.agent-link,.faq-group summary::after { transition:none; }.button:hover,.agent-link:hover,.button:active,.agent-link:active { transform:none; } }