/* Zuka Studio LP・サポート 共通スタイル */
:root{
  --bg:#0f0e0c;--bg2:#171612;--bg3:#201e1a;
  --ink:#f0eee6;--mute:#a7a296;--dim:#6f6a60;
  --clay:#d97757;--clay2:#eba383;--clay-deep:#b4563a;
  --line:rgba(240,238,230,.09);--line2:rgba(240,238,230,.17);
  --card:#1b1a16;
  --serif:'Noto Serif JP','Hiragino Mincho ProN','Yu Mincho',serif;
  --sans:'Noto Sans JP','Hiragino Sans','Yu Gothic UI','Meiryo',sans-serif;
  --mono:'JetBrains Mono',ui-monospace,Consolas,monospace;
  --ease:cubic-bezier(.2,.7,.1,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);line-height:1.85;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img,video{display:block;max-width:100%;height:auto}
::selection{background:var(--clay);color:#1a0f0a}
.wrap{width:min(1120px,100% - 32px);margin-inline:auto}
.narrow{width:min(820px,100% - 32px);margin-inline:auto}
.eyebrow{font:600 12px/1 var(--mono);letter-spacing:.22em;text-transform:uppercase;color:var(--clay)}
.h2{font-family:var(--serif);font-weight:600;font-size:clamp(28px,4.6vw,52px);line-height:1.35;letter-spacing:.02em;margin:14px 0 18px}
.lead{color:var(--mute);font-size:clamp(15px,1.6vw,18px)}
.accent{color:var(--clay)}
.nw{display:inline-block}
section{padding:clamp(72px,11vw,140px) 0}
.center{text-align:center}

/* nav */
.nav{position:sticky;top:0;z-index:100;background:rgba(15,14,12,.78);backdrop-filter:saturate(1.4) blur(16px);-webkit-backdrop-filter:saturate(1.4) blur(16px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:24px;height:58px}
.logo{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-weight:700;font-size:16px;letter-spacing:.04em;white-space:nowrap}
.logo i{width:24px;height:24px;border-radius:7px;background:radial-gradient(circle,#17150f 0 32%,transparent 33%),conic-gradient(from 0deg,var(--clay) 0 42%,#6aa9c9 42% 70%,#e8c36a 70% 100%);box-shadow:0 0 0 4px #17150f inset,0 0 0 1px rgba(255,255,255,.1)}
.logo small{font:500 11px/1 var(--sans);color:var(--dim);letter-spacing:.06em}
.nav ul{display:flex;gap:24px;list-style:none;margin-left:auto;font-size:13px;color:var(--mute)}
.nav ul a:hover{color:var(--ink)}
.support-link{font-size:12px;color:var(--mute);border-bottom:1px dotted var(--dim);white-space:nowrap}
.support-link:hover{color:var(--ink)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;font-weight:700;transition:transform .25s var(--ease),background .25s,box-shadow .25s}
.btn-sm{padding:7px 16px;font-size:13px;background:var(--clay);color:#1a0f0a;white-space:nowrap}
.btn-sm:hover{background:var(--clay2)}
.btn-lg{padding:17px 36px;font-size:16px;background:var(--clay);color:#1a0f0a;box-shadow:0 10px 40px -12px var(--clay)}
.btn-lg:hover{transform:translateY(-2px);background:var(--clay2)}
.btn-ghost{padding:16px 30px;font-size:15px;border:1px solid var(--line2);color:var(--ink)}
.btn-ghost:hover{border-color:var(--mute)}
@media(max-width:820px){.nav ul{display:none}.nav .support-link{margin-left:auto}}
@media(max-width:480px){.nav .wrap{gap:12px}.logo small{display:none}.logo{font-size:15px}.btn-sm{padding:6px 12px;font-size:12px}.support-link{font-size:11px}}
@media(max-width:360px){.logo{font-size:0;gap:0}.logo i{font-size:0}}

/* hero */
.hero{padding:clamp(56px,9vw,110px) 0 clamp(48px,7vw,90px);position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;width:110vmax;height:110vmax;left:50%;top:20%;transform:translate(-50%,-50%);
  background:radial-gradient(circle,rgba(217,119,87,.20) 0%,rgba(217,119,87,.05) 32%,transparent 60%);pointer-events:none}
.hero .copy{position:relative;text-align:center}
.hero h1{font-family:var(--serif);font-weight:700;font-size:clamp(32px,6.4vw,78px);line-height:1.25;letter-spacing:.02em;margin:18px 0 20px}
.hero .sub{color:var(--mute);font-size:clamp(15px,1.8vw,19px);max-width:700px;margin:0 auto 32px}
.cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero .shot{position:relative;margin-top:clamp(40px,6vw,72px);border-radius:22px;overflow:hidden;border:1px solid var(--line2);box-shadow:0 40px 120px -40px rgba(0,0,0,.9),0 0 120px -50px var(--clay)}
.note-s{font-size:12px;color:var(--dim);margin-top:12px}

/* hero demo（会話で作る → 作品のショー） */
@property --a{syntax:'<angle>';inherits:false;initial-value:0deg}
.demo{background:#14130f;text-align:left;max-width:1000px;margin-inline:auto}
.win-bar{display:flex;align-items:center;gap:7px;height:38px;padding:0 16px;border-bottom:1px solid var(--line);font-size:12px;color:var(--dim)}
.win-bar i{width:10px;height:10px;border-radius:50%;background:#3a3631}
.win-bar span{margin-left:10px;font-family:var(--mono);letter-spacing:.08em}
.stage{position:relative;aspect-ratio:16/9.2;overflow:hidden;background:radial-gradient(ellipse at 50% 40%,#2a2620,#14130f 70%)}
.sc{position:absolute;inset:0;opacity:0;transition:opacity .7s var(--ease);pointer-events:none}
.sc.on{opacity:1}
.sc-donut{display:flex;align-items:center;justify-content:center}
.sc-donut img{height:84%;width:auto;border-radius:14px;box-shadow:0 30px 80px -30px rgba(0,0,0,.8);
  -webkit-mask-image:conic-gradient(from 0deg at 47.5% 57.2%,#000 var(--a),transparent 0);mask-image:conic-gradient(from 0deg at 47.5% 57.2%,#000 var(--a),transparent 0)}
.sc-donut.draw img{animation:sweep 2.2s cubic-bezier(.5,0,.2,1) forwards}
@keyframes sweep{from{--a:0deg}to{--a:360deg}}
.fan{position:absolute;inset:7% 4% 9%}
.slide{position:absolute;top:0;width:32%;aspect-ratio:4/5;left:calc(var(--i)*17%);transform:translateY(40px) rotate(calc((var(--i) - 2)*3deg)) scale(.92);
  opacity:0;transition:transform .8s var(--ease),opacity .6s;transition-delay:calc(var(--i)*.12s);z-index:var(--i)}
.slide.in{opacity:1;transform:translateY(var(--y)) rotate(calc((var(--i) - 2)*3deg))}
.slide img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:10px;box-shadow:0 18px 40px -14px rgba(0,0,0,.85);transition:opacity .7s;transition-delay:calc(var(--i)*.1s)}
.slide img.v{opacity:0}
.slide img.v.show{opacity:1}
.sc-show{background:#14130f}
.rows{position:absolute;inset:-14% -10%;display:grid;grid-template-rows:repeat(5,1fr);gap:12px;transform:rotate(-8deg)}
.row{display:flex;gap:12px;min-height:0;width:max-content;animation:marq 22s linear infinite}
.row:nth-child(2){animation-duration:28s;animation-direction:reverse}
.row:nth-child(3){animation-duration:25s}
.row:nth-child(4){animation-duration:31s;animation-direction:reverse}
.row:nth-child(5){animation-duration:24s}
.row img{height:100%;width:auto;border-radius:10px;box-shadow:0 10px 30px -10px rgba(0,0,0,.8)}
@keyframes marq{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.sc-show .rows{opacity:.6}
.tagline{position:absolute;inset:0;display:grid;place-content:center;text-align:center;font-family:var(--serif);font-weight:700;line-height:1.3;
  font-size:clamp(26px,5.4vw,58px);background:radial-gradient(ellipse at center,rgba(15,14,12,.85) 0,rgba(15,14,12,.35) 55%,transparent 75%)}
.tagline span,.tagline b{display:block;opacity:0;transform:translateY(16px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.tagline b{color:var(--clay);font-size:1.35em;transition-delay:.35s}
.sc-show.on .tagline span,.sc-show.on .tagline b{opacity:1;transform:none}
.bubble{position:absolute;right:3%;top:5%;max-width:70%;background:var(--clay);color:#1a0f0a;font-size:clamp(11px,1.4vw,14px);font-weight:700;padding:7px 14px;border-radius:14px 14px 4px 14px;
  opacity:0;transform:translateY(-6px);transition:opacity .4s,transform .4s;z-index:20}
.bubble.on{opacity:1;transform:none}
.chat{display:flex;align-items:center;gap:2px;margin:12px;padding:12px 12px 12px 18px;border:1px solid var(--line2);border-radius:14px;background:#1d1b17;font-size:clamp(13px,1.6vw,16px);min-height:50px}
.typed{white-space:nowrap;overflow:hidden}
.typed:empty::before{content:"Claude に頼む…";color:var(--dim)}
.caret{width:2px;height:1.2em;background:var(--clay);animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.send{margin-left:auto;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:#3a3631;color:var(--ink);font-weight:700;transition:background .2s,transform .2s;flex:none}
.send.go{background:var(--clay);color:#1a0f0a;transform:scale(1.12)}
.demo .still{display:none}
@media(max-width:640px){.stage{aspect-ratio:1/1}.sc-donut img{width:92%;height:auto}.fan{inset:10% 3% 12%}.slide{width:40%;left:calc(var(--i)*15%)}.rows{inset:-2% -20%}}
@media(prefers-reduced-motion:reduce){.demo .win-bar,.demo .stage,.demo .chat{display:none}.demo .still{display:block}}

/* statement */
.statement p{font-family:var(--serif);font-size:clamp(20px,3vw,32px);line-height:1.8;text-align:center}
.statement em{font-style:normal;color:var(--clay)}

/* stats */
.stats{padding:0 0 clamp(60px,9vw,110px)}
.stats .grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:18px;overflow:hidden}
.stats .grid div{background:var(--bg);padding:28px 16px;text-align:center}
.stats b{display:block;font-family:var(--serif);font-size:clamp(30px,4.4vw,48px);color:var(--clay);line-height:1.2}
.stats span{font-size:13px;color:var(--mute)}
@media(max-width:700px){.stats .grid{grid-template-columns:repeat(2,1fr)}}

/* features */
.feature{display:grid;grid-template-columns:1fr 1.25fr;gap:clamp(28px,5vw,64px);align-items:center;padding:clamp(36px,6vw,64px) 0;border-top:1px solid var(--line)}
.feature:nth-child(even){grid-template-columns:1.25fr 1fr}
.feature:nth-child(even) .txt{order:2}
.feature h3{font-family:var(--serif);font-size:clamp(22px,3vw,32px);line-height:1.45;margin:12px 0 14px}
.feature p{color:var(--mute)}
.feature ul{list-style:none;margin-top:16px;display:grid;gap:8px;font-size:14px}
.feature li::before{content:"—";color:var(--clay);margin-right:10px}
.feature .pic{border-radius:16px;overflow:hidden;border:1px solid var(--line2);background:var(--bg2)}
.feature .pic.stack{display:grid;gap:10px;border:0;background:none}
.feature .pic.stack img{border-radius:12px;border:1px solid var(--line2)}
@media(max-width:820px){.feature,.feature:nth-child(even){grid-template-columns:1fr}.feature:nth-child(even) .txt{order:0}}

/* motion */
.vscroll{position:relative;margin-top:40px}
.motion .vids{display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;padding:10px 56px 24px;scroll-padding:0 56px;scrollbar-width:thin;scrollbar-color:var(--dim) transparent}
.motion .vids::-webkit-scrollbar{height:6px}.motion .vids::-webkit-scrollbar-thumb{background:var(--dim);border-radius:3px}
.vcard{flex:none;scroll-snap-align:start;display:grid;gap:12px;justify-items:center}
.vcard figcaption{font-size:13px;color:var(--mute)}
.phone{width:min(260px,62vw);aspect-ratio:9/16;border-radius:30px;padding:8px;background:linear-gradient(150deg,#3a3631,#14130f 40%,#2a2723);box-shadow:0 30px 80px -30px rgba(0,0,0,.9)}
.phone video{width:100%;height:100%;object-fit:cover;border-radius:23px;background:#000}
.vnav{position:absolute;top:42%;z-index:2;width:44px;height:44px;border-radius:50%;border:1px solid var(--line2);background:rgba(15,14,12,.8);color:var(--ink);font-size:18px;cursor:pointer;backdrop-filter:blur(8px)}
.vnav:hover{border-color:var(--mute)}
.vnav.prev{left:0}.vnav.next{right:0}
@media(max-width:640px){.vcard{scroll-snap-align:center}.vnav{display:none}.motion .vids{padding:10px calc(50% - 31vw) 24px;scroll-padding:0}}

/* gallery */
.gallery .tabs{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin:28px 0 24px}
.gallery .tabs button{font:500 13px var(--sans);color:var(--mute);background:var(--bg2);border:1px solid var(--line2);border-radius:999px;padding:8px 16px;cursor:pointer}
.gallery .tabs button[aria-selected="true"]{background:var(--clay);color:#1a0f0a;border-color:var(--clay)}
.gallery .panel{border-radius:16px;overflow:hidden;border:1px solid var(--line2);background:var(--bg2)}
.gallery .panel[hidden]{display:none}
.gallery .scroll{max-height:min(78vh,900px);overflow:auto}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:40px}
.step{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:26px}
.step .n{font:600 13px var(--mono);color:var(--clay);letter-spacing:.12em}
.step h4{font-family:var(--serif);font-size:20px;margin:8px 0 8px}
.step p{color:var(--mute);font-size:14px}
.prompt{font:14px/1.7 var(--mono);background:#0b0a09;border:1px solid var(--line2);border-radius:12px;padding:14px 16px;margin-top:12px;color:var(--ink)}
@media(max-width:820px){.steps{grid-template-columns:1fr}}

/* req */
.req{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:36px}
.req .box{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:26px}
.req h4{font-size:15px;margin-bottom:10px}
.req ul{list-style:none;display:grid;gap:8px;font-size:14px;color:var(--mute)}
.req li::before{content:"●";color:var(--clay);font-size:9px;margin-right:10px;vertical-align:2px}
.req .no li::before{color:var(--dim)}
@media(max-width:820px){.req{grid-template-columns:1fr}}

/* price */
.price .card{max-width:560px;margin:40px auto 0;background:linear-gradient(160deg,#211c17,#151310);border:1px solid var(--line2);border-radius:24px;padding:clamp(28px,5vw,48px);text-align:center;box-shadow:0 0 120px -50px var(--clay)}
.price .yen{font-family:var(--serif);font-size:clamp(44px,7vw,68px);font-weight:700;line-height:1.1}
.price .yen small{font-size:16px;color:var(--mute);font-weight:400;margin-left:6px}
.price .tag{display:inline-block;font-size:12px;font-weight:700;background:rgba(217,119,87,.15);color:var(--clay2);border-radius:999px;padding:4px 12px;margin-bottom:14px}
.price ul{list-style:none;text-align:left;display:grid;gap:9px;margin:24px 0 28px;font-size:14px}
.price li::before{content:"✓";color:var(--clay);font-weight:700;margin-right:10px}

/* faq */
.faq details{border-bottom:1px solid var(--line);padding:18px 4px}
.faq summary{cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::after{content:"+";color:var(--clay);font-size:20px;line-height:1}
.faq details[open] summary::after{content:"−"}
.faq details p{color:var(--mute);margin-top:10px;font-size:15px}

/* footer */
footer{border-top:1px solid var(--line);padding:40px 0 56px;color:var(--dim);font-size:13px}
footer .wrap{display:flex;gap:20px;flex-wrap:wrap;align-items:center;justify-content:space-between}
footer nav{display:flex;gap:20px;flex-wrap:wrap}
footer a:hover{color:var(--ink)}

/* support page */
.doc h1{font-family:var(--serif);font-size:clamp(28px,5vw,44px);line-height:1.35;margin:14px 0 12px}
.doc h2{font-family:var(--serif);font-size:clamp(22px,3vw,28px);margin:56px 0 16px;padding-top:12px;border-top:1px solid var(--line)}
.doc h3{font-size:17px;margin:26px 0 8px}
.doc p,.doc li{color:var(--mute);font-size:15px}
.doc ol,.doc ul{padding-left:1.4em;display:grid;gap:6px;margin:10px 0}
.doc code{font:13px var(--mono);background:#0b0a09;border:1px solid var(--line2);border-radius:6px;padding:1px 6px;color:var(--ink)}
.doc pre{font:13px/1.7 var(--mono);background:#0b0a09;border:1px solid var(--line2);border-radius:12px;padding:14px 16px;overflow-x:auto;color:var(--ink);margin:10px 0}
.doc .toc{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px 24px;margin:28px 0}
.doc .toc a{color:var(--clay2)}
.doc .callout{background:rgba(217,119,87,.08);border:1px solid rgba(217,119,87,.3);border-radius:12px;padding:14px 18px;margin:14px 0}
.doc .callout p{color:var(--ink)}
.doc table{width:100%;border-collapse:collapse;font-size:14px;margin:12px 0}
.doc th,.doc td{border-bottom:1px solid var(--line);padding:10px 8px;text-align:left;vertical-align:top}
.doc th{color:var(--ink);font-weight:700;white-space:nowrap}
.doc td{color:var(--mute)}
.doc .back{font-size:13px;color:var(--mute)}

/* reveal */
.rv{opacity:0;transform:translateY(24px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.rv.on{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

/* 見本のカード一覧と拡大 */
.gallery .panel{background:none;border:0;overflow:visible;display:grid;gap:16px}
.gallery .panel[hidden]{display:none}
.hot{position:relative;border-radius:16px;overflow:hidden;border:1px solid var(--line2);background:var(--bg2)}
.hot img{width:100%;height:auto;display:block}
.hs{position:absolute;padding:0;border:0;background:transparent;border-radius:10px;cursor:zoom-in;transition:box-shadow .15s,background .15s}
.hs:hover,.hs:focus-visible{outline:none;box-shadow:0 0 0 3px var(--clay),0 10px 30px -8px rgba(0,0,0,.6);background:rgba(217,119,87,.06)}
.gallery .grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;text-align:center}
.gallery .grid.g5{grid-template-columns:repeat(5,1fr)}
.gallery .gh{font-size:14px;color:var(--mute);font-weight:500;text-align:left;margin:22px 0 10px}
.gallery .gh:first-child{margin-top:0}
.gi{display:grid;gap:8px}
.gb{display:block;width:100%;aspect-ratio:4/3;padding:8px;border:1px solid var(--line2);border-radius:12px;background:#fff;cursor:zoom-in;transition:transform .2s var(--ease),box-shadow .2s,border-color .2s}
.g5 .gb{aspect-ratio:4/5;padding:0;background:var(--bg2);overflow:hidden}
.gb img{width:100%;height:100%;object-fit:contain}
.g5 .gb img{object-fit:cover}
.gb:hover,.gb:focus-visible{transform:translateY(-3px);border-color:var(--clay);box-shadow:0 14px 30px -14px rgba(0,0,0,.8);outline:none}
.gi figcaption{font-size:12px;color:var(--mute);line-height:1.4}
@media(max-width:900px){.gallery .grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:560px){.gallery .grid{grid-template-columns:repeat(2,1fr);gap:10px}.gallery .grid.g5{grid-template-columns:repeat(3,1fr)}}
.zpop{position:fixed;z-index:300;pointer-events:none;background:#fff;border-radius:14px;padding:10px 10px 6px;box-shadow:0 0 0 1px rgba(0,0,0,.2),0 30px 80px -20px rgba(0,0,0,.85);
  opacity:0;transform:scale(.94) translateY(6px);transition:opacity .18s,transform .18s var(--ease)}
.zpop.on{opacity:1;transform:none}
.zpop img{width:100%;height:auto;max-height:70vh;object-fit:contain;border-radius:8px}
.zpop p{font-size:12px;color:#3B2A20;text-align:center;margin-top:4px;font-weight:700}
.zoomable{cursor:zoom-in}
.zoomable:focus-visible{outline:2px solid var(--clay);outline-offset:3px}
.zbox{position:fixed;inset:0;z-index:400;background:rgba(10,9,8,.9);display:none;align-items:center;justify-content:center;padding:56px 16px 24px;cursor:zoom-out}
.zbox.on{display:flex}
.zfig{max-width:min(1100px,100%);max-height:100%;display:flex;flex-direction:column;gap:10px;cursor:auto}
.zscroll{overflow:auto;border-radius:12px;background:#fff;max-height:calc(100vh - 120px)}
.zscroll img{display:block;max-width:100%;max-height:calc(100vh - 120px);margin:auto}
.zbox.wide .zfig{max-width:100%}
.zbox.wide .zscroll img{max-width:none;max-height:none;width:min(2400px,160vw)}
@media(min-width:900px){.zbox.wide .zscroll img{width:min(2400px,94vw)}}
.zfig figcaption{text-align:center;color:var(--ink);font-size:14px;font-weight:700}
.zclose{position:absolute;top:12px;right:16px;width:40px;height:40px;border-radius:50%;border:1px solid var(--line2);background:rgba(15,14,12,.8);color:var(--ink);font-size:22px;line-height:1;cursor:pointer}

/* 近日公開 */
.btn.soon{background:transparent;border:1px dashed var(--line2);color:var(--mute);cursor:default;box-shadow:none}
.btn.soon:hover{transform:none;background:transparent}
.price .card .btn.soon{margin-top:4px}