/* AiiB public homepage. Brand tokens follow public/brand/aib (ink #1F2933, teal #009B91, teal-soft #7FCFC8). */
:root{
  --color-brand-teal:#009B91;--color-border-color:#E5E7EB;
  --ink:#1F2933;--ink-2:#3B4653;--muted:#5B6470;--line:#E5E7EB;--line-2:#D4D9DF;
  --bg:#FFFFFF;--bg-2:#F4F7F8;--bg-dark:#0E1B1F;--bg-dark-2:#132A2F;
  --teal:#009B91;--teal-deep:#007C74;--teal-soft:#7FCFC8;--mint:#2DD4BF;--teal-tint:#E6F6F4;
  --orange:#F59E0B;--red:#DC2626;
  --font-sans:"Noto Sans JP",-apple-system,BlinkMacSystemFont,"Hiragino Sans","Helvetica Neue",Arial,sans-serif;
  --font-brand:"Sora",var(--font-sans);
  --font-mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --r:14px;--r-lg:22px;--shadow:0 18px 60px -24px rgba(15,27,31,.35);
  --max:1120px;--gutter:20px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font-sans);color:var(--ink);background:var(--bg);line-height:1.75;font-size:16px;overflow-x:hidden}
img,svg{display:block;max-width:100%}
a{color:var(--teal-deep)}
h1,h2,h3{font-weight:700;letter-spacing:-.01em;line-height:1.25;margin:0}
p{margin:0}
.wrap{max-width:var(--max);margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter)}
.narrow{max-width:720px}.narrow-wrap{max-width:820px}
.skip{position:absolute;left:-999px;top:0}.skip:focus{left:8px;top:8px;background:#fff;padding:8px;z-index:100}
[hidden]{display:none!important}

/* language banner */
.lang-banner{display:flex;gap:14px;align-items:center;justify-content:center;background:var(--teal-tint);color:var(--ink);font-size:.9rem;padding:8px var(--gutter)}
.lang-banner a{font-weight:600}
.lang-banner button{background:none;border:0;font-size:1.1rem;cursor:pointer;color:var(--muted)}

/* header */
.top{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line)}
.top-in{display:flex;align-items:center;gap:28px;height:64px}
.brand img{height:30px;width:auto}
.top-nav{display:flex;gap:22px;margin-left:8px}
.top-nav a{color:var(--ink-2);text-decoration:none;font-size:.94rem;font-weight:500}
.top-nav a:hover{color:var(--teal-deep)}
.top-right{margin-left:auto;display:flex;align-items:center;gap:16px}
.lang{color:var(--muted);text-decoration:none;font-size:.9rem}
.menu{display:none;margin-left:auto;background:none;border:0;width:40px;height:40px;padding:8px;cursor:pointer}
.menu i{display:block;height:2px;background:var(--ink);margin:5px 0;border-radius:2px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:999px;font-weight:600;text-decoration:none;font-size:.98rem;border:1px solid transparent;transition:transform .15s,background .15s,border-color .15s;white-space:nowrap}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--teal);color:#fff}.btn-primary:hover{background:var(--teal-deep)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-2)}.btn-ghost:hover{border-color:var(--ink)}
.btn-sm{padding:8px 16px;font-size:.88rem;background:var(--ink);color:#fff}.btn-sm:hover{background:#000}
.hero .btn-ghost{color:#fff;border-color:rgba(255,255,255,.35)}.hero .btn-ghost:hover{border-color:#fff}

/* type helpers */
.kicker{font-family:var(--font-brand);font-weight:600;font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;color:var(--teal);margin-bottom:14px}
.sec-dark .kicker,.hero .kicker,.get .kicker{color:var(--mint)}
h2{font-size:clamp(1.7rem,3.2vw,2.5rem);margin-bottom:16px}
.h2-sm{font-size:clamp(1.4rem,2.4vw,1.9rem);margin-bottom:28px}
.lead{font-size:clamp(1.02rem,1.4vw,1.15rem);color:var(--ink-2);line-height:1.85}
.sec{padding:clamp(64px,9vw,120px) 0}
.sec-tint{background:var(--bg-2)}
.sec-dark{background:var(--bg-dark);color:#fff}
.sec-dark .lead{color:rgba(255,255,255,.78)}

/* hero */
.hero{background:radial-gradient(1200px 600px at 80% -10%,rgba(0,155,145,.35),transparent 60%),radial-gradient(800px 500px at -10% 110%,rgba(45,212,191,.18),transparent 60%),var(--bg-dark);color:#fff;padding:clamp(56px,8vw,96px) 0 clamp(64px,8vw,104px);position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:48px 48px;mask-image:radial-gradient(60% 60% at 70% 40%,#000,transparent);-webkit-mask-image:radial-gradient(60% 60% at 70% 40%,#000,transparent);pointer-events:none}
.hero-in{display:grid;grid-template-columns:1fr;gap:48px;align-items:start;position:relative}
.hero-copy{max-width:760px}
.hero-in>*,.ai-grid>*,.feature>*,.demo>*{min-width:0}
.hero h1{font-size:clamp(1.9rem,3.7vw,3.05rem);line-height:1.2;margin-bottom:20px;letter-spacing:-.02em}
.hero h1 span{display:block;white-space:nowrap}
.hero .lead{color:rgba(255,255,255,.8);max-width:640px;margin-bottom:28px}
.cta-row{display:flex;gap:12px;flex-wrap:wrap}.cta-row.center{justify-content:center}
.cta-note{font-size:.86rem;color:rgba(255,255,255,.6);margin-top:12px}
.facts{display:flex;gap:32px;margin-top:36px;padding-top:24px;border-top:1px solid rgba(255,255,255,.14)}
.fact{display:flex;flex-direction:column}
.fact-v{font-family:var(--font-brand);font-weight:700;font-size:1.8rem;line-height:1.1;color:#fff}
.fact-k{font-size:.82rem;color:rgba(255,255,255,.65);margin-top:4px}

/* hero demo */
.demo{display:grid;grid-template-columns:minmax(0,.48fr) 36px minmax(0,1.52fr);gap:10px;align-items:start}
.demo-label{font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:rgba(255,255,255,.55);margin-bottom:8px;font-family:var(--font-brand)}
.demo-data{display:flex;flex-direction:column}
.code{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--r);padding:14px 14px;font-family:var(--font-mono);font-size:.76rem;line-height:1.7;color:rgba(255,255,255,.9)}
.kv{display:flex;gap:8px;align-items:baseline}
.kv .v{min-width:0;overflow-wrap:break-word}
.kv .k{color:var(--teal-soft)}.kv .v{color:#fff}.kv .hl{color:var(--mint);font-weight:600}
.kv-item{padding-left:14px}.kv-item .dash{color:rgba(255,255,255,.4)}.kv-item .n{color:var(--mint);margin-left:auto;white-space:nowrap;padding-left:8px}
.demo-note{font-size:.8rem;color:rgba(255,255,255,.6);margin-top:10px;line-height:1.5}
.demo-arrow{display:flex;align-items:center;justify-content:center;color:var(--mint);height:100%;min-height:200px;padding-top:28px}
.demo .slide-embed{aspect-ratio:16/9}
.demo-arrow svg{width:40px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.demo-slide{display:flex;flex-direction:column}
.mslide{aspect-ratio:16/9;background:var(--s-bg,#fff);color:var(--s-ink,#1F2933);border-radius:10px;box-shadow:0 30px 70px -20px rgba(0,0,0,.6);padding:7% 7% 5%;position:relative;overflow:hidden;font-family:var(--s-font,var(--font-sans));transition:background .4s,color .4s}
.mslide-bar{position:absolute;left:0;top:0;height:var(--s-barh,6px);width:var(--s-barw,100%);background:var(--s-accent,#009B91);transition:all .4s}
.mslide-title{font-weight:700;font-size:clamp(.9rem,1.9vw,1.3rem);line-height:1.2;margin-bottom:8%;padding-left:var(--s-titlepad,0);border-left:var(--s-titleborder,0) solid var(--s-accent,#009B91);transition:all .4s}
.mslide-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:4%}
.mslide-col{background:var(--s-card,#F4F7F8);border:1px solid var(--s-cardline,transparent);border-radius:var(--s-cardr,8px);padding:7% 5%;text-align:center;transition:all .4s;animation:pop .5s backwards;animation-delay:calc(var(--i)*.08s)}
.mslide-num{font-family:var(--font-brand);font-weight:700;font-size:clamp(1rem,2.4vw,1.7rem);color:var(--s-accent,#009B91);line-height:1.1;transition:color .4s}
.mslide-lbl{font-size:clamp(.55rem,1vw,.74rem);color:var(--s-muted,#5B6470);margin-top:5px;line-height:1.25}
.mslide-foot{position:absolute;left:7%;right:7%;bottom:5%;display:flex;justify-content:space-between;align-items:center;font-size:.6rem;color:var(--s-muted,#5B6470)}
.mslide-logo{width:28px;height:6px;border-radius:3px;background:var(--s-accent,#009B91);opacity:.7}
@keyframes pop{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.demo-designs{display:flex;gap:6px;align-items:center;margin-top:12px;flex-wrap:wrap}
.demo-designs-label{font-size:.72rem;color:rgba(255,255,255,.55);margin-right:4px;font-family:var(--font-brand);letter-spacing:.06em;text-transform:uppercase}
.chip{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:#fff;border-radius:999px;padding:5px 12px;font-size:.8rem;cursor:pointer;font-family:inherit}
.chip[aria-pressed=true]{background:var(--mint);color:var(--bg-dark);border-color:var(--mint);font-weight:600}
.demo-caption{text-align:center;font-size:.86rem;color:rgba(255,255,255,.6);margin-top:18px}
/* designs */
.demo[data-design=navy]{--s-bg:#0F2742;--s-ink:#fff;--s-accent:#F5B041;--s-card:rgba(255,255,255,.08);--s-muted:rgba(255,255,255,.7);--s-barh:100%;--s-barw:8px;--s-cardr:4px}
.demo[data-design=warm]{--s-bg:#FBF6EE;--s-ink:#3A2E22;--s-accent:#D9542B;--s-card:#fff;--s-cardline:#EBDFD0;--s-muted:#8A7A68;--s-barh:0;--s-titleborder:5px;--s-titlepad:12px;--s-cardr:14px;--s-font:Georgia,"Hiragino Mincho ProN","Noto Serif JP",serif}
.demo[data-design=mono]{--s-bg:#fff;--s-ink:#111;--s-accent:#111;--s-card:#fff;--s-cardline:#111;--s-muted:#555;--s-barh:2px;--s-cardr:0}

/* stats */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:40px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px 26px;box-shadow:var(--shadow)}
.stat-num{font-family:var(--font-brand);font-weight:700;font-size:clamp(2.2rem,4vw,3rem);color:var(--teal);line-height:1}
.stat-num sup{font-size:.8rem;color:var(--muted);margin-left:4px}
.stat-label{font-weight:600;margin:10px 0 8px}
.stat p{color:var(--muted);font-size:.94rem}
.footnotes{list-style:none;padding:0;margin:28px 0 0;color:var(--muted);font-size:.8rem;line-height:1.7;max-width:820px}
.footnotes li{margin:4px 0}

/* reasons */
.reasons{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.reasons li{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px 18px}
.rnum{font-family:var(--font-brand);font-size:.78rem;color:var(--teal);font-weight:600;display:block;margin-bottom:8px}
.reasons strong{display:block;font-size:.98rem;margin-bottom:6px;line-height:1.4}
.reasons p{color:var(--muted);font-size:.88rem;line-height:1.65}

/* ai */
.ai-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:56px;align-items:start}
.providers{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:28px 0 28px}
.provider{border:1px solid var(--line);border-radius:12px;padding:12px 10px;text-align:center;background:#fff}
.provider strong{display:block;font-size:.92rem}.provider span{font-size:.76rem;color:var(--muted)}
.points{list-style:none;padding:0;margin:0;display:grid;gap:18px}
.points li{display:flex;gap:14px;align-items:flex-start}
.points strong{display:block;margin-bottom:2px}.points p{color:var(--muted);font-size:.93rem}
.ico{flex:none;width:38px;height:38px;border-radius:10px;background:var(--teal-tint);display:inline-flex;align-items:center;justify-content:center}
.ico svg{width:20px;height:20px;stroke:var(--teal-deep);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.chat{display:grid;gap:14px;position:sticky;top:96px}
.bubble{border-radius:18px;padding:16px 18px;font-size:.95rem;line-height:1.6}
.bubble.user{background:var(--ink);color:#fff;justify-self:end;max-width:88%;border-bottom-right-radius:6px}
.bubble.ai{background:var(--bg-2);border:1px solid var(--line);border-bottom-left-radius:6px}
.diff{font-family:var(--font-mono);font-size:.78rem;line-height:1.7;background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin-bottom:12px;overflow:auto;white-space:pre}
.diff .add{color:#047857;background:#ECFDF5}.diff .del{color:#B91C1C;background:#FEF2F2;text-decoration:line-through;text-decoration-color:rgba(185,28,28,.4)}.diff .ctx{color:var(--muted)}
.tok{display:inline-block;margin-top:10px;font-size:.74rem;color:var(--teal-deep);background:var(--teal-tint);border-radius:999px;padding:2px 10px;font-family:var(--font-brand)}

/* local */
.local-grid{list-style:none;padding:0;margin:40px 0 0;display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.local-grid li{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:var(--r-lg);padding:24px 22px}
.local-grid .ico{background:rgba(45,212,191,.14);margin-bottom:14px}.local-grid .ico svg{stroke:var(--mint)}
.local-grid strong{display:block;margin-bottom:6px}.local-grid p{color:rgba(255,255,255,.7);font-size:.92rem}

/* tour */
.features{display:grid;gap:clamp(40px,6vw,72px);margin-top:40px}
.feature{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center}
.feature.flip .feature-text{order:2}
.feature-head{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.feature h3{font-size:1.45rem}
.badge{font-family:var(--font-brand);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;border-radius:999px;padding:3px 10px;background:var(--bg-2);color:var(--muted);border:1px solid var(--line)}
.badge.pro{background:var(--teal);color:#fff;border-color:var(--teal)}
.feature-text p{color:var(--ink-2)}
.feature-text ul{margin:16px 0 0;padding:0;list-style:none;display:grid;gap:8px}
.feature-text li{position:relative;padding-left:22px;font-size:.94rem;color:var(--ink-2)}
.feature-text li:before{content:"";position:absolute;left:0;top:.62em;width:10px;height:10px;border-radius:50%;background:var(--teal-soft)}
.feature-visual{background:linear-gradient(135deg,var(--bg-2),#E9F1F2);border-radius:var(--r-lg);padding:28px;min-height:280px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line)}
.mock{width:100%;max-width:360px}
.mock i,.mock b{display:block;background:#CBD3DA;border-radius:3px}
/* slides mock */
.mock-slides{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.thumb{aspect-ratio:16/9;background:#fff;border-radius:6px;box-shadow:0 6px 18px -8px rgba(0,0,0,.25);padding:10px;position:relative;overflow:hidden}
.thumb i{height:5px;margin:4px 0}.thumb i:first-child{width:60%;background:var(--ink);height:6px}
.thumb:before{content:"";position:absolute;left:0;top:0;height:3px;width:100%;background:var(--teal)}
.thumb.t1 i:nth-child(2){width:40%}.thumb.t2 i:nth-child(3){width:30%;background:var(--teal-soft);height:14px;border-radius:2px}
.thumb.t3{background:var(--ink)}.thumb.t3 i{background:rgba(255,255,255,.5)}.thumb.t3 i:first-child{background:#fff}
.thumb.t4 i:nth-child(2),.thumb.t4 i:nth-child(3){height:18px;width:28%;display:inline-block;margin-right:4px;background:var(--teal-tint)}
.thumb.t5:before{background:var(--orange)}
/* doc mock */
.mock-doc .page{background:#fff;width:230px;aspect-ratio:1/1.414;margin:0 auto;box-shadow:0 10px 30px -12px rgba(0,0,0,.3);padding:18px 16px;position:relative}
.mock-doc .ph{height:8px;width:65%;background:var(--ink);border-radius:2px;margin-bottom:14px}
.mock-doc .pc{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.mock-doc .col i{height:3px;margin:5px 0}.mock-doc .col i:nth-child(odd){width:92%}
.mock-doc .fig{height:36px;background:var(--teal-tint);border:1px solid var(--teal-soft);margin:8px 0}
.mock-doc .pn{position:absolute;bottom:8px;left:0;right:0;text-align:center;font-size:.6rem;color:var(--muted)}
/* exam mock */
.mock-exam{background:#fff;border-radius:10px;padding:18px;box-shadow:0 10px 30px -12px rgba(0,0,0,.25)}
.mock-exam .q{display:flex;gap:8px;align-items:center;margin:8px 0 6px}.mock-exam .q b{width:18px;height:18px;border-radius:50%;background:var(--ink);color:#fff;font-size:.65rem;display:flex;align-items:center;justify-content:center;font-family:var(--font-brand)}
.mock-exam .q i{flex:1;height:5px}
.mock-exam .opts{display:flex;gap:6px;padding-left:26px}.mock-exam .opts span{font-size:.62rem;border:1px solid var(--line-2);border-radius:999px;padding:1px 8px;color:var(--muted)}
.mock-exam .ans{padding-left:26px}.mock-exam .ans .red{display:block;height:14px;width:55%;background:#FCA5A5;border-radius:3px;position:relative;overflow:hidden}
.mock-exam .ans .red:after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(45deg,transparent 0 4px,rgba(220,38,38,.35) 4px 6px)}
.mock-exam .blank{display:flex;gap:6px;padding-left:26px;align-items:center}.mock-exam .blank i{height:5px;flex:1}.mock-exam .blank em{width:40px;height:12px;border-bottom:2px solid var(--ink)}
/* minutes mock */
.mock-min{display:grid;grid-template-columns:80px 1fr;gap:14px;background:#fff;border-radius:10px;padding:16px;box-shadow:0 10px 30px -12px rgba(0,0,0,.25)}
.mock-min .toc i{height:4px;margin:7px 0;width:70%}.mock-min .toc .h{background:var(--teal);width:90%}
.mock-min .body b{height:7px;width:50%;background:var(--ink);margin:4px 0 8px}
.mock-min .body i{height:4px;margin:6px 0}.mock-min .body .s{width:60%}
.mock-min .body .mask{background:#111;height:8px;width:38%;border-radius:2px}
/* design mock */
.mock-design{display:grid;grid-template-columns:1fr 50px;gap:12px}
.mock-design .art{aspect-ratio:1;background:linear-gradient(135deg,#0F3F3B,#5FB8B0 70%,#CFEDE9);border-radius:10px;padding:16px;position:relative}
.mock-design .pill{display:block;width:44px;height:14px;background:var(--orange);border-radius:999px;margin-bottom:12px}
.mock-design b{height:12px;width:75%;background:#fff;margin:6px 0}.mock-design .w2{width:55%}
.mock-design i{height:4px;width:60%;background:rgba(255,255,255,.7);margin-top:16px}
.mock-design .side i{height:28px;width:100%;background:#fff;border:1px solid var(--line);border-radius:6px;margin-bottom:8px}
/* library mock */
.mock-lib{background:#fff;border-radius:10px;padding:10px;box-shadow:0 10px 30px -12px rgba(0,0,0,.25);display:grid;gap:6px}
.mock-lib .row{display:flex;gap:10px;align-items:center;padding:8px 10px;border-radius:6px;background:var(--bg-2)}
.mock-lib .tag{width:34px;height:20px;border-radius:4px;background:var(--teal)}.mock-lib .tag.b{background:var(--orange)}.mock-lib .tag.c{background:var(--ink)}
.mock-lib i{height:5px;flex:1}

/* pricing */
.banner{display:inline-block;margin-top:18px;background:var(--teal-tint);color:var(--teal-deep);border-radius:999px;padding:8px 16px;font-size:.9rem;font-weight:500}
.plans{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:32px;max-width:760px}
.plan{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px}
.plan.hi{border-color:var(--teal);box-shadow:0 20px 60px -24px rgba(0,155,145,.45);position:relative}
.plan-name{font-family:var(--font-brand);font-weight:600;color:var(--muted);font-size:.86rem;letter-spacing:.08em;text-transform:uppercase}
.plan-price{font-family:var(--font-brand);font-weight:700;font-size:2.2rem;margin:8px 0 14px;line-height:1.1}
.plan-price span{display:block;font-family:var(--font-sans);font-weight:400;font-size:.86rem;color:var(--muted);margin-top:4px}
.plan ul{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.plan li{position:relative;padding-left:24px;font-size:.94rem}
.plan li:before{content:"";position:absolute;left:0;top:.5em;width:14px;height:14px;border-radius:50%;background:var(--teal-tint)}
.plan li:after{content:"";position:absolute;left:4px;top:.5em;width:6px;height:4px;border-left:2px solid var(--teal-deep);border-bottom:2px solid var(--teal-deep);transform:translateY(2px) rotate(-45deg)}
.plan-note{margin-top:16px;font-size:.78rem;color:var(--muted)}

/* roadmap */
.roadmap{list-style:none;padding:0;margin:32px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;position:relative}
.roadmap li{padding-top:18px;border-top:2px solid var(--line-2);position:relative}
.roadmap li:first-child{border-top-color:var(--teal)}
.roadmap .when{font-family:var(--font-brand);font-size:.76rem;letter-spacing:.1em;text-transform:uppercase;color:var(--teal);display:block;margin-bottom:6px}
.roadmap strong{display:block;font-size:1.05rem;margin-bottom:4px}.roadmap p{color:var(--muted);font-size:.92rem}

/* faq */
.faq details{border-bottom:1px solid var(--line-2);padding:4px 0}
.faq summary{cursor:pointer;padding:14px 0;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";color:var(--teal);font-family:var(--font-brand);font-size:1.2rem;line-height:1;flex:none}
.faq details[open] summary:after{content:"–"}
.faq p{color:var(--ink-2);padding:0 0 16px;font-size:.95rem}

/* get */
.get{background:radial-gradient(900px 500px at 50% 120%,rgba(0,155,145,.45),transparent 60%),var(--bg-dark);color:#fff;text-align:center}
.get-in{max-width:720px}
.get-mark{margin:0 auto 24px;border-radius:22px;box-shadow:0 20px 50px -20px rgba(0,0,0,.7)}
.get .lead{color:rgba(255,255,255,.78);margin-bottom:28px}
.get .btn-ghost{color:#fff;border-color:rgba(255,255,255,.35)}

/* footer */
.foot{background:#0A1417;color:rgba(255,255,255,.65);font-size:.86rem;padding:40px 0 48px}
.foot-in{display:grid;grid-template-columns:1fr auto;gap:20px 40px;align-items:start}
.foot-brand{display:flex;flex-direction:column;gap:4px}
.foot-brand img{filter:invert(1) brightness(2);height:24px;width:auto;margin-bottom:6px;opacity:.9}
.foot-links{display:flex;flex-wrap:wrap;gap:8px 18px}
.foot-links a{color:rgba(255,255,255,.8);text-decoration:none}.foot-links a:hover{color:#fff}
.foot-copy{grid-column:1/-1;color:rgba(255,255,255,.45);font-size:.78rem;line-height:1.7;border-top:1px solid rgba(255,255,255,.1);padding-top:18px}

/* reveal */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}.mslide-col{animation:none}html{scroll-behavior:auto}}

/* responsive */
@media (max-width:1000px){
  .hero .lead{max-width:none}
  .stats,.reasons{grid-template-columns:repeat(2,1fr)}
  .ai-grid{grid-template-columns:1fr;gap:36px}.chat{position:static}
  .local-grid{grid-template-columns:repeat(2,1fr)}
  .feature{grid-template-columns:1fr;gap:24px}.feature.flip .feature-text{order:0}
  .roadmap{grid-template-columns:1fr}
}
@media (max-width:720px){
  .top-nav,.top-right .lang{display:none}
  .menu{display:block}
  .top-nav.open{display:flex;flex-direction:column;position:absolute;left:0;right:0;top:64px;background:#fff;border-bottom:1px solid var(--line);padding:12px var(--gutter) 18px;gap:12px}
  .hero{padding-top:40px}
  .demo{grid-template-columns:1fr;gap:12px}
  .demo-arrow{transform:rotate(90deg);height:32px;min-height:0;padding:0;margin:4px 0}
  .code{font-size:.74rem}
  .facts{gap:20px;flex-wrap:wrap}
  .stats,.reasons,.local-grid,.plans{grid-template-columns:1fr}
  .providers{grid-template-columns:repeat(2,1fr)}
  .feature-visual{min-height:220px;padding:18px}
  .foot-in{grid-template-columns:1fr}
  .btn{width:100%}
  .cta-row{flex-direction:column}
}

/* real slides (DeckSlideView の HTML。CSS は assets/slides.css) */
.slide-embed{position:relative;width:100%}
.slide-embed [class*="proposalSlideCanvas"]{max-width:none!important;box-shadow:none!important;border:0!important}
.slide-embed *{pointer-events:none}
.hero-slide{border-radius:10px;overflow:hidden;box-shadow:0 30px 70px -20px rgba(0,0,0,.6);background:#fff}
.hero-variant{display:block}

/* viewer */
.viewer{margin-top:36px;background:var(--bg-dark);border-radius:var(--r-lg);padding:20px;color:#fff}
.viewer-stage{position:relative;background:#fff;border-radius:10px;overflow:hidden;box-shadow:0 20px 50px -24px rgba(0,0,0,.8)}
.viewer-main{aspect-ratio:16/9;width:100%}
.viewer-nav{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;border:0;background:rgba(14,27,31,.75);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .2s}
.viewer-nav svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.viewer-nav.prev{left:12px}.viewer-nav.next{right:12px}
.viewer-stage:hover .viewer-nav,.viewer-nav:focus-visible{opacity:1}
.viewer-counter{position:absolute;right:12px;bottom:10px;font-family:var(--font-brand);font-size:.74rem;background:rgba(14,27,31,.75);color:#fff;border-radius:999px;padding:3px 10px}
.viewer-thumbs{display:flex;gap:10px;overflow-x:auto;padding:14px 2px 6px;scroll-snap-type:x proximity;scrollbar-width:thin}
.thumb-btn{flex:0 0 auto;width:128px;background:none;border:2px solid transparent;border-radius:8px;padding:2px;cursor:pointer;position:relative;scroll-snap-align:start}
.thumb-btn .slide-embed{border-radius:5px;overflow:hidden;background:#fff}
.thumb-btn[aria-pressed=true]{border-color:var(--mint)}
.thumb-no{position:absolute;left:6px;bottom:6px;font-family:var(--font-brand);font-size:.62rem;background:rgba(14,27,31,.8);color:#fff;border-radius:999px;padding:1px 7px}
.viewer-bar{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-top:8px}
.viewer .demo-designs{margin-top:0}
.demo-designs-label.dark{color:rgba(255,255,255,.55)}
.viewer-dl{display:flex;gap:8px;flex-wrap:wrap}
.dl{display:inline-flex;align-items:center;gap:8px;color:#fff;text-decoration:none;font-size:.86rem;border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 14px}
.dl:hover{border-color:#fff}
.dl svg{width:16px;height:16px;stroke:var(--mint);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.viewer-note{margin-top:14px;font-size:.82rem;color:rgba(255,255,255,.6)}
.viewer-title{color:rgba(255,255,255,.85)}
.viewer.loading{opacity:.7}

/* figures */
.figs{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:36px}
.fig{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:14px;display:flex;flex-direction:column;gap:10px}
.fig-svg{flex:1;display:flex;align-items:center;justify-content:center;min-height:120px}
.fig-svg svg{width:100%;height:auto;max-height:180px}
.fig figcaption{font-size:.86rem;font-weight:600;display:flex;justify-content:space-between;align-items:baseline;gap:8px}
.fig figcaption span{font-weight:400;font-size:.74rem;color:var(--muted)}
.figs-more{margin-top:16px;color:var(--muted);font-size:.9rem}
@media (max-width:1000px){.figs{grid-template-columns:repeat(2,1fr)}}
@media (max-width:720px){.figs{grid-template-columns:1fr 1fr;gap:10px}.fig{padding:10px}.viewer{padding:12px}.thumb-btn{width:96px}.viewer-nav{opacity:1;width:36px;height:36px}}

/* design lab */
.dl-btn{background:var(--mint);color:var(--bg-dark);border-color:var(--mint);cursor:pointer;font-family:inherit;font-weight:600}
.dl-btn svg{stroke:var(--bg-dark)}
.lab{margin-top:14px;border-top:1px solid rgba(255,255,255,.12);padding-top:14px}
.lab-lead{font-size:.86rem;color:rgba(255,255,255,.75);margin-bottom:12px;max-width:760px}
.lab-group{display:flex;gap:10px;align-items:flex-start;margin:8px 0}
.lab-label{flex:0 0 112px;font-size:.74rem;letter-spacing:.06em;color:rgba(255,255,255,.55);font-family:var(--font-brand);text-transform:uppercase;padding-top:6px}
.lab-opts{display:flex;flex-wrap:wrap;gap:6px}
.swatch{width:30px;height:30px;border-radius:50%;border:2px solid transparent;background:none;padding:0;cursor:pointer;position:relative}
.swatch span{display:block;width:100%;height:100%;border-radius:50%;background:var(--sw);box-shadow:inset 0 0 0 1px rgba(255,255,255,.25)}
.swatch em{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);font:600 .55rem var(--font-sans);color:#fff;font-style:normal;white-space:nowrap}
.swatch[aria-pressed=true]{border-color:#fff}
.lab-status{margin-top:10px;font-size:.8rem;color:var(--mint);min-height:1.2em;font-family:var(--font-brand)}
@media (max-width:720px){.lab-group{flex-direction:column;gap:4px}.lab-label{flex:none}}