/* Layout: one phone-width column for the Instagram in-app browser — compare slider first, then the prompt, with a copy bar pinned to the bottom. Night-photo world, single dark look by choice. */
:root{
 --bg:#0c0d0a;--raise:#15170f;--line:#2a2d22;--ink:#f1f2e8;--mute:#a3a693;--lime:#d1fe17;--lime-ink:#0c0d0a;
 --display:'Bricolage Grotesque','Instrument Sans',system-ui,sans-serif;
 --body:'Instrument Sans',system-ui,-apple-system,sans-serif;
 --mono:'JetBrains Mono',ui-monospace,Menlo,monospace;
 color-scheme:dark;
}
html.jp{--display:'Noto Sans JP',system-ui,sans-serif;--body:'Noto Sans JP',system-ui,sans-serif}
html.tw{--display:'Noto Sans TC',system-ui,sans-serif;--body:'Noto Sans TC',system-ui,sans-serif}
*{box-sizing:border-box;margin:0;padding:0}
html{background:var(--bg)}
body{background:var(--bg);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;
 padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-bottom:calc(96px + env(safe-area-inset-bottom,0px))}
.col{max-width:520px;margin:0 auto;display:flex;flex-direction:column;gap:48px}
img{display:block;max-width:100%}
/* top bar */
.bar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-block:14px 0}
.handle{font-family:var(--mono);font-size:14px;font-weight:500;color:var(--ink);text-decoration:none;letter-spacing:.02em}
.handle b{color:var(--lime);font-weight:500}
.langs{display:flex;gap:2px;background:var(--raise);border:1px solid var(--line);border-radius:999px;padding:3px}
.langs a{font-size:12px;font-weight:600;color:var(--mute);text-decoration:none;padding:4px 9px;border-radius:999px;font-family:var(--body)}
.langs a[aria-current="true"]{background:var(--ink);color:var(--bg)}
/* hero: compare slider */
.hero{display:flex;flex-direction:column;gap:20px}
.cmp{position:relative;aspect-ratio:3/4;max-width:100%;border-radius:20px;overflow:hidden;background:var(--raise);touch-action:pan-y}
.cmp img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.cmp .after{clip-path:inset(0 0 0 var(--x,50%))}
.cmp .rule{position:absolute;top:0;bottom:0;left:var(--x,50%);width:2px;margin-left:-1px;background:var(--lime);pointer-events:none}
.cmp .knob{position:absolute;top:50%;left:var(--x,50%);width:44px;height:44px;margin:-22px 0 0 -22px;border-radius:50%;background:var(--lime);color:var(--lime-ink);display:grid;place-items:center;pointer-events:none;box-shadow:0 4px 18px rgba(0,0,0,.45)}
.cmp input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize;margin:0}
.cmp input:focus-visible ~ .knob{outline:3px solid var(--ink);outline-offset:3px}
.tag{position:absolute;top:12px;font:600 11px/1 var(--mono);letter-spacing:.12em;padding:6px 9px;border-radius:6px;pointer-events:none}
.tag.b{left:12px;background:rgba(12,13,10,.72);color:var(--ink)}
.tag.a{right:12px;background:var(--lime);color:var(--lime-ink)}
.hint{font-size:13px;color:var(--mute);display:flex;align-items:center;gap:8px}
.hint::before{content:"";width:18px;height:2px;background:var(--lime)}
h1{font-family:var(--display);font-weight:800;font-size:clamp(30px,8.4vw,42px);line-height:1.12;letter-spacing:-.02em;text-wrap:balance}
html.jp h1,html.tw h1{font-weight:900;letter-spacing:0;line-height:1.3}
html.jp h1,html.jp h2,html.jp .follow p{word-break:auto-phrase}
.lead{color:var(--mute);font-size:16.5px}
/* the look this prompt imitates */
.look{display:flex;flex-direction:column;gap:10px}
.eyebrow{font:600 11px/1.4 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--mute)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips span{font:500 13px/1 var(--mono);padding:9px 12px;border:1px solid var(--line);border-radius:8px;background:var(--raise)}
.chips span:first-child{border-color:var(--lime);color:var(--lime)}
/* sections */
section{display:flex;flex-direction:column;gap:16px}
h2{font-family:var(--display);font-weight:800;font-size:24px;line-height:1.25;letter-spacing:-.01em;text-wrap:balance}
html.jp h2,html.tw h2{font-weight:700;letter-spacing:0}
ol.steps{list-style:none;display:flex;flex-direction:column;counter-reset:s}
ol.steps li{counter-increment:s;display:grid;grid-template-columns:44px 1fr;gap:14px;align-items:baseline;padding-block:14px;border-top:1px solid var(--line);font-weight:500}
ol.steps li:last-child{border-bottom:1px solid var(--line)}
ol.steps li::before{content:counter(s);font:800 30px/1 var(--display);color:var(--lime)}
.prompt{border:1px solid var(--line);border-radius:16px;background:var(--raise);overflow:hidden}
.prompt .ph{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px 12px 16px;border-bottom:1px solid var(--line)}
.prompt pre{font:400 13.5px/1.75 var(--mono);white-space:pre-wrap;overflow-wrap:anywhere;padding:16px;min-width:0;color:var(--ink)}
.btn{font:600 14px/1 var(--body);border:0;border-radius:999px;padding:12px 18px;background:var(--lime);color:var(--lime-ink);cursor:pointer;min-height:44px}
.btn:focus-visible,.langs a:focus-visible,.follow a:focus-visible{outline:3px solid var(--ink);outline-offset:2px}
.note{font-size:14px;color:var(--mute)}
/* gallery: hold to see the original */
.gal{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.gal figure{position:relative;aspect-ratio:3/4;max-width:100%;border-radius:14px;overflow:hidden;background:var(--raise);cursor:pointer;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
.gal figure.wide{grid-column:span 2;aspect-ratio:4/5}
.gal img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;-webkit-user-drag:none}
.gal .orig{opacity:0;transition:opacity .18s}
.gal figure.hold .orig{opacity:1}
.gal .tag{top:auto;bottom:10px;right:10px;left:auto}
.gal figure.hold .tag{background:rgba(12,13,10,.72);color:var(--ink)}
ul.tips{list-style:none;display:flex;flex-direction:column;gap:12px}
ul.tips li{display:grid;grid-template-columns:20px 1fr;gap:10px;font-size:15.5px}
ul.tips li::before{content:"";width:8px;height:8px;margin-top:.62em;border-radius:50%;background:var(--lime)}
.follow{display:flex;flex-direction:column;gap:14px;padding:24px 20px;border-radius:20px;background:var(--lime);color:var(--lime-ink)}
.follow p{font-family:var(--display);font-weight:800;font-size:22px;line-height:1.25;text-wrap:balance}
.follow a{align-self:flex-start;font:600 15px/1 var(--mono);color:var(--lime);background:var(--lime-ink);padding:14px 18px;border-radius:999px;text-decoration:none}
footer{font-size:12px;color:var(--mute);padding-block:0 8px}
/* pinned copy bar */
.dock{position:fixed;left:0;right:0;bottom:0;z-index:5;padding:12px max(16px,env(safe-area-inset-right,0px)) calc(12px + env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px));background:linear-gradient(to top,var(--bg) 62%,rgba(12,13,10,0))}
.dock .btn{display:block;width:100%;max-width:520px;margin:0 auto;padding:16px;font-size:16px}
.toast{position:fixed;left:50%;bottom:calc(84px + env(safe-area-inset-bottom,0px));transform:translate(-50%,8px);opacity:0;transition:opacity .2s,transform .2s;background:var(--ink);color:var(--bg);font-size:14px;font-weight:500;padding:10px 14px;border-radius:10px;max-width:calc(100% - 32px);text-align:center;z-index:6;pointer-events:none}
.toast.on{opacity:1;transform:translate(-50%,0)}
@media (prefers-reduced-motion:reduce){.gal .orig,.toast{transition:none}}
.bar-r{display:flex;align-items:center;gap:12px}
.desk,.hover-only{display:none}
.btn{transition:transform .15s ease-out,filter .15s}
.btn:hover{filter:brightness(1.06)}.btn:active{transform:scale(.97)}
.ghost{font:600 15px/1 var(--body);color:var(--ink);text-decoration:none;padding:16px 4px;border-bottom:2px solid var(--line)}
.ghost:hover{border-color:var(--lime)}
.ghost:focus-visible{outline:3px solid var(--ink);outline-offset:2px}
.hero-media,.hero-copy{display:flex;flex-direction:column;gap:20px;min-width:0}
.end{display:flex;flex-direction:column;gap:48px}
@media (hover:hover) and (pointer:fine){
 .touch-only{display:none}.hover-only{display:inline}
 .gal figure:hover .orig{opacity:1}
 .gal figure:hover .tag{background:rgba(12,13,10,.72);color:var(--ink)}
}
/* tablet */
@media (min-width:768px){
 .col{max-width:720px}
 .gal{grid-template-columns:repeat(3,minmax(0,1fr))}
 .gal figure.wide{grid-column:span 1;aspect-ratio:3/4}
}
/* desktop: slider left, copy right; gallery four across; no bottom dock */
@media (min-width:1024px){
 body{padding-bottom:0}
 .col{max-width:1200px;gap:96px}
 .bar{position:sticky;top:env(safe-area-inset-top,0px);z-index:4;background:var(--bg);padding-block:18px;border-bottom:1px solid var(--line);margin-inline:calc(-1*max(16px,env(safe-area-inset-left,0px)));padding-inline:max(16px,env(safe-area-inset-left,0px))}
 .desk{display:inline-flex;align-items:center}
 .dock,.hint{display:none}
 .hero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:64px;align-items:center}
 .cmp{aspect-ratio:3/4;margin-inline:auto;width:min(100%,calc(80vh*.75))}
 h1{font-size:clamp(44px,4.6vw,68px);line-height:1.04;letter-spacing:-.035em}
 html.jp h1,html.tw h1{font-size:clamp(40px,3.8vw,56px);line-height:1.22}
 .lead{font-size:19px;max-width:34em}
 .ctas{display:flex;align-items:center;gap:24px;margin-top:8px}
 .btn.big{padding:18px 28px;font-size:17px}
 h2{font-size:clamp(28px,2.4vw,36px)}
 .how{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:48px;align-items:start}
 .how ol.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
 .how ol.steps li{display:flex;flex-direction:column;gap:14px;border:1px solid var(--line);border-radius:16px;padding:22px;font-size:17px}
 .how ol.steps li:last-child{border-bottom:1px solid var(--line)}
 .how ol.steps li::before{font-size:44px}
 .pr{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:16px 48px;align-items:start}
 .pr h2{grid-row:span 2}
 .pr .prompt pre{font-size:15px;padding:24px}
 .gal{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
 .end{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:64px;align-items:start}
 .follow{padding:36px 32px;position:sticky;top:110px}
 .follow p{font-size:30px}
 footer{padding-block:0 32px}
}
@media (prefers-reduced-motion:reduce){.btn{transition:none}}
.crumb{display:flex;gap:8px;align-items:center;font-size:13px;color:var(--mute);margin-top:-28px}
.crumb a{color:var(--mute);text-decoration:none;padding-block:10px}.crumb a:hover{color:var(--ink)}
.bonus{display:grid;gap:18px;padding:24px 20px;border-radius:20px;border:1px solid var(--lime);background:var(--raise)}
.bonus h2{color:var(--lime)}
.bonus p{color:var(--mute)}
.bonus form{display:flex;flex-direction:column;gap:12px}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font:600 12px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--mute)}
.row{display:flex;gap:8px;flex-wrap:wrap}
.bonus input[type=email]{flex:1 1 200px;min-width:0;height:52px;border-radius:12px;border:1px solid var(--line);background:var(--bg);color:var(--ink);font:500 16px var(--body);padding:0 14px}
.bonus input[type=email]:focus{border-color:var(--lime);outline:none}
.bonus button{height:52px;border:0;border-radius:12px;background:var(--lime);color:var(--lime-ink);font:600 16px var(--body);padding:0 20px;cursor:pointer}
.consent{display:grid;grid-template-columns:22px 1fr;gap:10px;align-items:start;font-size:14px;color:var(--mute)}
.consent input{width:20px;height:20px;margin-top:2px;accent-color:var(--lime)}
.err{font-size:14px;font-weight:600;color:var(--ink)}
.okmsg{font-weight:600;color:var(--lime)}

.dock{display:flex;gap:8px;align-items:center}
.dock .btn{flex:1;max-width:none;margin:0}
.nextbtn{flex:none;display:inline-flex;align-items:center;justify-content:center;height:52px;padding:0 18px;border-radius:999px;border:1px solid var(--line);background:var(--raise);color:var(--ink);font:600 15px/1 var(--body);text-decoration:none}
.upnext{display:grid;grid-template-columns:110px 1fr;gap:16px;align-items:center;padding:14px;border-radius:18px;border:1px solid var(--line);background:var(--raise);text-decoration:none;color:var(--ink)}
.upnext .un-pic{position:relative;display:block;aspect-ratio:3/4;border-radius:12px;overflow:hidden}
.upnext img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.upnext .un-txt{display:flex;flex-direction:column;gap:8px;min-width:0}
.upnext b{font-family:var(--display);font-weight:800;font-size:20px;line-height:1.25;text-wrap:balance}
html.jp .upnext b,html.tw .upnext b{font-weight:700}
.upnext .go{font:600 14px/1 var(--body);color:var(--lime)}
.upnext:hover{border-color:var(--lime)}
.float-next{display:none}
.gal.few figure{grid-column:auto;aspect-ratio:3/4}
@media (min-width:1024px){
 .dock{display:none}
 .upnext{grid-template-columns:180px 1fr;padding:20px;gap:28px}.upnext b{font-size:28px}
 .float-next{display:grid;grid-template-columns:1fr auto;column-gap:14px;align-items:center;position:fixed;right:max(24px,env(safe-area-inset-right,0px));bottom:calc(24px + env(safe-area-inset-bottom,0px));z-index:6;max-width:320px;padding:14px 18px;border-radius:16px;background:var(--ink);color:var(--bg);text-decoration:none;box-shadow:0 10px 30px rgba(0,0,0,.4)}
 .float-next .eyebrow{grid-column:1;color:#5d6150}
 .float-next b{grid-column:1;font-size:14px;line-height:1.35;font-weight:600}
 .float-next span[aria-hidden]{grid-column:2;grid-row:1/3;font:800 22px/1 var(--display)}
 .float-next:hover{background:var(--lime);color:var(--lime-ink)}
 .bar-r .ghost{padding:12px 4px}
 .gal.few{grid-template-columns:repeat(2,minmax(0,1fr));max-width:720px}
}

.crumb-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:-28px}
.crumb-row .crumb{margin-top:0}
.savebtn{display:inline-flex;align-items:center;gap:6px;min-height:40px;padding:0 12px;border-radius:999px;border:1px solid var(--line);background:transparent;color:var(--ink);font:600 13px/1 var(--body);cursor:pointer;white-space:nowrap}
.savebtn:hover{border-color:var(--ink)}.savebtn:focus-visible{outline:3px solid var(--lime);outline-offset:2px}
.sheet{border:0;padding:0;margin:auto auto 0;width:100%;max-width:520px;background:transparent;color:var(--ink)}
.sheet::backdrop{background:rgba(0,0,0,.55)}
.sheet-in{display:grid;gap:12px;background:var(--raise);border:1px solid var(--line);border-bottom:0;border-radius:20px 20px 0 0;padding:18px 18px calc(18px + env(safe-area-inset-bottom,0px))}
.sheet-h{display:flex;align-items:center;justify-content:space-between}
.sheet h2{font-size:18px;letter-spacing:0}
.sheet p{font-size:14px;color:var(--mute)}
.x{width:44px;height:44px;border:0;border-radius:50%;background:transparent;color:var(--ink);font-size:26px;cursor:pointer}
.save-b{display:flex;flex-wrap:wrap;gap:8px}
@media (min-width:1024px){.crumb-row{margin-top:-64px}.sheet{margin:auto}.sheet-in{border-radius:20px;border-bottom:1px solid var(--line)}}
.sbtn{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 14px;border-radius:999px;border:1px solid var(--line);background:var(--bg);color:var(--ink);font:600 14px/1 var(--body);text-decoration:none;cursor:pointer}
.sbtn:hover{border-color:var(--ink)}
.sbtn:focus-visible{outline:3px solid var(--lime);outline-offset:2px}
.dot{width:10px;height:10px;border-radius:50%;background:var(--mute)}
.d-line{background:#06c755}.d-whatsapp{background:#25d366}.d-telegram{background:#26a5e4}.d-messages{background:#34c759}.d-notion{background:var(--ink)}.d-copy{background:var(--lime)}
.rel-g{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.rcard{display:flex;flex-direction:column;gap:8px;text-decoration:none;color:var(--ink);font-size:13px;line-height:1.4;min-width:0}
.rcard .rpic{position:relative;display:block;aspect-ratio:3/4;border-radius:12px;overflow:hidden;background:var(--raise)}
.rcard img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.rcard b{font-weight:600}
@media (min-width:1024px){
 .crumb{margin-top:-64px}
 .bonus{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;padding:40px;align-items:center}
 .rel-g{gap:18px}.rcard{font-size:16px}
}



/* site shell */
body{padding-bottom:calc(96px + env(safe-area-inset-bottom,0px))}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--bg)}
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:5;background:var(--bg);border-bottom:1px solid var(--line);margin-inline:calc(-1*max(16px,env(safe-area-inset-left,0px)));padding:12px max(16px,env(safe-area-inset-left,0px))}
.top-in{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:12px}
.logo{font:500 18px/1 var(--mono);color:var(--ink);text-decoration:none;padding-block:10px}.logo b{color:var(--lime);font-weight:500}
.logo.big{font-size:26px}
.col{padding-top:28px}
.post{display:flex;flex-direction:column;gap:48px}
.crumb-row{margin-top:0}
.crumb span{color:var(--mute)}
.meta{font-size:13px;color:var(--mute)}
.foot{display:flex;flex-direction:column;gap:10px;border-top:1px solid var(--line);padding-block:24px 8px;color:var(--mute);font-size:13px}
.foot nav{display:flex;flex-wrap:wrap;gap:6px 18px}.foot a{color:var(--ink);text-decoration:none}
.sub{display:flex;flex-direction:column;gap:10px}
.sub label:first-of-type{font:600 12px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--mute)}
.sub input[type=email]{flex:1 1 200px;min-width:0;height:52px;border-radius:12px;border:1px solid var(--line);background:var(--bg);color:var(--ink);font:500 16px var(--body);padding:0 14px}
.sub input[type=email]:focus{border-color:var(--lime);outline:none}
.sub button{height:52px;border:0;border-radius:12px;background:var(--lime);color:var(--lime-ink);font:600 16px var(--body);padding:0 20px;cursor:pointer}
.sub button[disabled]{opacity:.5}
/* home */
.home{gap:56px}
.feat{display:grid;border-radius:20px;overflow:hidden;background:var(--raise);border:1px solid var(--line);text-decoration:none;color:var(--ink)}
.feat .pic{position:relative;aspect-ratio:4/5}.feat .pic img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.feat .txt{display:flex;flex-direction:column;gap:12px;padding:22px}
.feat h1{font-family:var(--display);font-weight:800;font-size:clamp(28px,6vw,46px);line-height:1.1;letter-spacing:-.02em;text-wrap:balance}
html.jp .feat h1,html.tw .feat h1{font-weight:900;letter-spacing:0;line-height:1.3}
html.jp .feat h1{word-break:auto-phrase}
.feat p{color:var(--mute)}.feat .go,.go{font:600 15px/1 var(--body);color:var(--lime)}
.chip{align-self:flex-start;font:600 11px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;padding:7px 9px;border-radius:6px;background:var(--lime);color:var(--lime-ink)}
.list{display:flex;flex-direction:column;gap:20px}
.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 12px}
.card{display:flex;flex-direction:column;gap:10px;text-decoration:none;color:var(--ink);min-width:0}
.card .pic{position:relative;aspect-ratio:3/4;border-radius:14px;overflow:hidden;background:var(--raise)}.card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.card h3{font-size:15px;font-weight:600;line-height:1.4;text-wrap:balance}.card .meta{font:500 12px/1.4 var(--mono)}
.news{display:grid;gap:20px;padding:28px 22px;border-radius:20px;background:var(--lime);color:var(--lime-ink)}
.news h2{color:var(--lime-ink)}.news p{font-weight:500}
.news .sub label:first-of-type{color:var(--lime-ink)}.news .consent{color:var(--lime-ink)}
.news .sub input[type=email]{background:#f6ffd0;color:var(--lime-ink);border:2px solid var(--lime-ink)}
.news .sub button{background:var(--lime-ink);color:var(--lime)}
.news .okmsg,.news .err{color:var(--lime-ink)}
.text{max-width:680px;gap:18px}.text h1{font-family:var(--display);font-size:34px}.text p{color:var(--mute)}.text a{color:var(--lime)}
.pick{max-width:640px;gap:28px;padding-block:48px}
.pick h1{font-family:var(--display);font-size:clamp(28px,6vw,44px);line-height:1.15}
.pick-l{list-style:none;display:grid;gap:10px}
.pick-l a{display:flex;flex-direction:column;gap:4px;padding:16px 18px;border:1px solid var(--line);border-radius:14px;background:var(--raise);color:var(--ink);text-decoration:none;font-weight:700}
.pick-l a[aria-current="true"]{border-color:var(--lime)}
.pick-l span{font-weight:400;color:var(--mute);font-size:14px}
@media (min-width:768px){.grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (min-width:1024px){body{padding-bottom:0}.feat{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.feat .txt{padding:40px;justify-content:center}.grid{grid-template-columns:repeat(4,minmax(0,1fr))}.news{grid-template-columns:minmax(0,1fr) minmax(0,1fr);padding:48px;align-items:center;gap:48px}}