/* 自己紹介MDメーカー — デザインは stores.fun を参考（構成・余白・ボタン形状） */
/* Layout: commerce-SaaS landing — promo bar, sticky header with two CTAs, hero, labeled sections on alternating white/gray, plan cards, FAQ, closing CTA, multi-column footer */
:root{
  --bg:#FFFFFF; --sub:#F4F5F5; --ink:#1F1F1F; --muted:#6B6E6F; --line:#E3E5E5;
  --btn:#1F1F1F; --btn-ink:#FFFFFF; --hl:#E6F4EF; --hl-ink:#0E7A5A; --bad:#C2483F; --good:#0E7A5A;
  --code-bg:#1F1F1F; --code-fg:#F2F2F2;
  --c-claude:#D97757; --c-gpt:#10A37F; --c-gemini:#3B7BF0;
  --sans:"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;
  --latin:"Inter","Noto Sans JP",sans-serif;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#141515; --sub:#1E2020; --ink:#EDEEEE; --muted:#A4A8A9; --line:#323535;
  --btn:#EDEEEE; --btn-ink:#141515; --hl:#173329; --hl-ink:#6FD3AE; --bad:#EE7A70; --good:#6FD3AE;
  --code-bg:#0B0C0C; --code-fg:#F2F2F2; --c-claude:#E08A6D; --c-gpt:#1DB58F; --c-gemini:#5B93F5; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#141515; --sub:#1E2020; --ink:#EDEEEE; --muted:#A4A8A9; --line:#323535;
  --btn:#EDEEEE; --btn-ink:#141515; --hl:#173329; --hl-ink:#6FD3AE; --bad:#EE7A70; --good:#6FD3AE;
  --code-bg:#0B0C0C; --code-fg:#F2F2F2; --c-claude:#E08A6D; --c-gpt:#1DB58F; --c-gemini:#5B93F5; color-scheme:dark}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.85;letter-spacing:.02em}
a{color:inherit}
h1,h2,h3{margin:0;text-wrap:balance;font-weight:700;line-height:1.45}
p{margin:0}
.in{max-width:1080px;margin:0 auto;padding-inline:20px}
/* promo */
.promo{background:var(--btn);color:var(--btn-ink);font-size:.8rem;text-align:center;padding:8px 16px}
.promo a{font-weight:700;text-decoration:underline}
/* header */
header.site{position:sticky;top:env(safe-area-inset-top,0px);z-index:10;background:color-mix(in srgb,var(--bg) 94%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
header.site .in{display:flex;align-items:center;gap:24px;height:64px}
.logo{font-family:var(--latin);font-weight:700;font-size:1rem;letter-spacing:.06em;text-decoration:none;white-space:nowrap}
.logo span{color:var(--hl-ink)}
nav.gnav{display:flex;gap:22px;font-size:.88rem;font-weight:500;flex:1}
nav.gnav a{text-decoration:none}
nav.gnav a:hover{color:var(--muted)}
.hbtns{display:flex;gap:8px;margin-left:auto}
@media (max-width:860px){nav.gnav{display:none}}
@media (max-width:420px){.hbtns .btn.out{display:none}}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:inherit;font-weight:700;font-size:.9rem;border-radius:999px;padding:10px 22px;text-decoration:none;cursor:pointer;border:1.5px solid var(--btn);white-space:nowrap}
.btn.fill{background:var(--btn);color:var(--btn-ink)}
.btn.out{background:var(--bg);color:var(--ink)}
.btn.lg{font-size:1rem;padding:16px 34px}
.btn:hover{opacity:.85}
.btn .arw{font-family:var(--latin)}
/* hero */
.hero{padding-block:56px 72px}
.hero .in{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center}
@media (max-width:820px){.hero .in{grid-template-columns:1fr;gap:32px}}
.hero h1{font-size:clamp(2rem,5.4vw,3.4rem);font-weight:900;letter-spacing:.03em;line-height:1.35}
.hero .sub{margin-top:20px;color:var(--muted);font-size:1rem}
.hero .ctas{margin-top:32px;display:flex;gap:12px;flex-wrap:wrap}
.hero .media{position:relative;min-width:0}
.hero .media img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:24px;display:block}
.hero .badge{position:absolute;left:-12px;bottom:-18px;background:var(--bg);border:1px solid var(--line);border-radius:16px;padding:12px 16px;font-size:.8rem;box-shadow:0 8px 24px rgba(0,0,0,.08);max-width:80%}
.hero .badge b{display:block;font-size:.95rem}
@media (max-width:820px){.hero .badge{left:12px}}
/* sections */
.sec{padding-block:88px}
.sec.gray{background:var(--sub)}
.shead{display:flex;flex-direction:column;gap:10px;margin-bottom:44px}
.shead .lbl{font-size:.9rem;font-weight:700;color:var(--muted)}
.shead h2{font-size:clamp(1.5rem,3.6vw,2.2rem);font-weight:900}
.shead p{color:var(--muted);max-width:640px}
.center{text-align:center;align-items:center}
.center p{margin-inline:auto}
/* compare */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media (max-width:820px){.grid3{grid-template-columns:1fr 1fr}}
@media (max-width:640px){.grid2,.grid3{grid-template-columns:1fr}}
.card{background:var(--bg);border-radius:20px;padding:28px;display:flex;flex-direction:column;gap:12px;min-width:0}
.sec:not(.gray) .card{background:var(--sub)}
.pill{display:inline-block;width:max-content;font-size:.78rem;font-weight:700;border-radius:999px;padding:3px 12px}
.pill.bad{background:color-mix(in srgb,var(--bad) 14%,transparent);color:var(--bad)}
.pill.good{background:var(--hl);color:var(--hl-ink)}
.say{font-size:.85rem;color:var(--muted)}
.quote{font-size:.95rem;border-left:3px solid var(--line);padding-left:14px}
.mdfile{background:var(--code-bg);color:var(--code-fg);border-radius:16px;padding:18px 20px;font-family:ui-monospace,Menlo,monospace;font-size:.82rem;line-height:1.75;overflow-x:auto}
.mdfile .h{color:#8FD8BC}
.what{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;margin-bottom:56px}
@media (max-width:820px){.what{grid-template-columns:1fr;gap:24px}}
.what p+p{margin-top:14px}
/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media (max-width:820px){.steps{grid-template-columns:1fr}}
.step{display:flex;flex-direction:column;gap:14px;min-width:0}
.step img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:20px;display:block}
.step .no{font-family:var(--latin);font-weight:700;font-size:.85rem;color:var(--hl-ink)}
.step h3{font-size:1.15rem}
.step p{color:var(--muted);font-size:.92rem}
/* maker */
.maker{background:var(--bg);border-radius:24px;padding:32px;display:grid;grid-template-columns:1fr 1fr;gap:32px}
@media (max-width:820px){.maker{grid-template-columns:1fr;padding:22px}}
.fields{display:flex;flex-direction:column;gap:16px;min-width:0}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-weight:700;font-size:.9rem}
.field small{color:var(--muted);font-size:.78rem}
input::placeholder,textarea::placeholder{color:var(--muted);opacity:.55}
input,textarea{font:inherit;font-size:.93rem;color:var(--ink);background:var(--sub);border:1px solid transparent;border-radius:10px;padding:11px 14px;width:100%}
textarea{min-height:76px;resize:vertical}
input:focus,textarea:focus{border-color:var(--ink);outline:none}
.btn:focus-visible,.tab:focus-visible,summary:focus-visible,a:focus-visible{outline:2px solid var(--hl-ink);outline-offset:3px}
.outcol{display:flex;flex-direction:column;gap:12px;min-width:0;position:sticky;top:88px;align-self:start}
@media (max-width:820px){.outcol{position:static}}
.outcol pre{margin:0;white-space:pre-wrap;word-break:break-word;max-height:440px;overflow:auto}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.note{font-size:.8rem;color:var(--muted)}
.copied{color:var(--good);font-weight:700;font-size:.88rem}
.more{border:1.5px dashed var(--line);border-radius:14px;padding:4px 16px}
.more>summary{list-style:none;cursor:pointer;font-weight:700;font-size:.92rem;padding:12px 0}
.more>summary::-webkit-details-marker{display:none}
.more>summary::before{content:"＋ ";color:var(--hl-ink)}
.more[open]>summary::before{content:"－ "}
.more .fields{padding-bottom:16px}
/* phrase-aware line breaks */
h1,h2,h3,.shead p,.lbl,.badge,.rib,summary,.closing p{word-break:auto-phrase}
.nw{display:inline-block}
.sp-only{display:none}
@media (max-width:640px){.sp-only{display:inline}}
.shots{border:1.5px solid var(--line);border-radius:16px;padding:16px;display:flex;flex-direction:column;gap:16px}
.shots-head{display:flex;flex-direction:column;gap:2px}
.shots-head small{color:var(--muted);font-size:.78rem}
.shot{display:flex;flex-direction:column;gap:8px}
.shot-lbl{font-weight:700;font-size:.9rem}
.drop{display:flex;align-items:center;justify-content:center;border:1.5px dashed var(--line);border-radius:12px;background:var(--sub);padding:14px;font-size:.88rem;font-weight:700;color:var(--muted);cursor:pointer}
.drop:hover,.drop.on{border-color:var(--hl-ink);color:var(--hl-ink)}
.thumbs{display:flex;flex-wrap:wrap;gap:8px}
.thumbs:empty{display:none}
.th{position:relative;width:72px;height:72px;border-radius:10px;overflow:hidden;background:var(--sub)}
.th img{width:100%;height:100%;object-fit:cover;display:block}
.th button{position:absolute;top:3px;right:3px;width:22px;height:22px;border-radius:50%;border:0;background:rgba(0,0,0,.6);color:#fff;font-size:13px;line-height:22px;cursor:pointer;padding:0}
.attach{background:color-mix(in srgb,var(--hl-ink) 10%,transparent);border-radius:12px;padding:12px 14px;font-size:.85rem}
.attach b{display:block;margin-bottom:2px}
/* tabs */
.tabs{display:flex;flex-wrap:wrap;gap:10px}
.tab{--c:var(--muted);font:inherit;font-weight:700;font-size:.95rem;border:2px solid var(--c);background:var(--bg);color:var(--c);border-radius:999px;padding:10px 22px;cursor:pointer;white-space:nowrap;display:inline-flex;align-items:center;gap:8px;transition:background .2s,color .2s,box-shadow .25s,transform .1s;-webkit-tap-highlight-color:transparent}
.tab::before{content:"";width:9px;height:9px;border-radius:50%;background:currentColor}
.tab[data-brand="claude"]{--c:var(--c-claude)}
.tab[data-brand="gpt"]{--c:var(--c-gpt)}
.tab[data-brand="gemini"]{--c:var(--c-gemini)}
.tab[aria-selected="true"]{background:var(--c);color:#fff;box-shadow:0 0 0 4px color-mix(in srgb,var(--c) 22%,transparent),0 8px 22px color-mix(in srgb,var(--c) 40%,transparent)}
.tab:active{transform:scale(.96);box-shadow:0 0 0 7px color-mix(in srgb,var(--c) 30%,transparent)}
.panel[data-brand="claude"]{--c:var(--c-claude)}
.panel[data-brand="gpt"]{--c:var(--c-gpt)}
.panel[data-brand="gemini"]{--c:var(--c-gemini)}
.panel{margin-top:28px}
.panel ol{margin:0;padding:0;list-style:none;counter-reset:o;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media (max-width:820px){.panel ol{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.panel ol{grid-template-columns:1fr}}
.panel li{counter-increment:o;background:var(--sub);border-radius:16px;padding:20px;font-size:.92rem;border-top:4px solid var(--c)}
.panel li::before{content:"STEP " counter(o);display:block;font-family:var(--latin);font-weight:700;font-size:.75rem;color:var(--c);margin-bottom:6px}
.panel .tip{margin-top:16px;font-size:.9rem;background:color-mix(in srgb,var(--c) 10%,transparent);border-left:4px solid var(--c);border-radius:0 12px 12px 0;padding:12px 16px}
.panel{animation:pin .3s ease}
@keyframes pin{from{opacity:.4;transform:translateY(6px)}to{opacity:1;transform:none}}
.fallback{margin-top:28px;border:1.5px dashed var(--line);border-radius:16px;padding:20px 22px;font-size:.92rem}
.fallback b{display:block;margin-bottom:4px}
/* redo */
.redo{display:flex;flex-direction:column;gap:10px}
.pair{display:grid;grid-template-columns:1fr 1.7fr;gap:16px;background:var(--bg);border-radius:14px;padding:16px 20px;font-size:.93rem}
@media (max-width:560px){.pair{grid-template-columns:1fr;gap:4px}}
.pair .no{color:var(--bad)}
.pair .no::before{content:"✕  ";font-weight:700}
.pair .yes::before{content:"◯  ";font-weight:700;color:var(--good)}
.onepoint{margin-top:28px;background:var(--hl);color:var(--ink);border-radius:20px;padding:24px 26px;display:flex;flex-direction:column;gap:10px}
.onepoint .op-lbl{display:inline-block;width:max-content;background:var(--btn);color:var(--btn-ink);font-size:.75rem;font-weight:700;border-radius:999px;padding:3px 12px}
.onepoint h3{font-size:1.1rem}
.onepoint p{font-size:.93rem}
/* uses */
.use{background:var(--sub);border-radius:20px;padding:24px;min-width:0;display:flex;flex-direction:column;gap:6px}
.use .ic{width:40px;height:40px;border-radius:12px;background:var(--hl);color:var(--hl-ink);display:flex;align-items:center;justify-content:center;font-family:var(--latin);font-weight:700;margin-bottom:6px}
.use b{font-size:1.02rem}
.use span{font-size:.88rem;color:var(--muted)}
/* plans */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch}
@media (max-width:820px){.plans{grid-template-columns:1fr}}
.plan{background:var(--bg);border-radius:24px;padding:32px 26px;display:flex;flex-direction:column;gap:14px;border:2px solid transparent;position:relative;min-width:0}
.plan.rec{border-color:var(--ink)}
.plan .rib{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--btn);color:var(--btn-ink);font-size:.78rem;font-weight:700;border-radius:999px;padding:4px 16px;white-space:nowrap}
.plan h3{font-size:1.15rem}
.plan .price{font-size:2rem;font-weight:900;font-family:var(--latin);line-height:1.2}
.plan .price small{font-size:.85rem;font-weight:500;font-family:var(--sans);color:var(--muted)}
.plan ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:8px;font-size:.9rem;flex:1}
.plan li{padding-left:22px;position:relative}
.plan li::before{content:"";position:absolute;left:2px;top:.65em;width:10px;height:6px;border-left:2px solid var(--hl-ink);border-bottom:2px solid var(--hl-ink);transform:rotate(-45deg)}
.plan .btn{width:100%}
.flow{margin:0;padding:14px 16px;list-style:none;counter-reset:f;background:var(--sub);border-radius:14px;display:flex;flex-direction:column;gap:6px;font-size:.82rem}
.flow li{counter-increment:f;display:flex;gap:8px}
.flow li::before{content:counter(f);flex:none;width:20px;height:20px;border-radius:50%;background:var(--btn);color:var(--btn-ink);font-family:var(--latin);font-weight:700;font-size:.72rem;display:flex;align-items:center;justify-content:center;margin-top:2px}
.plannote{margin-top:24px;font-size:.8rem;color:var(--muted);display:flex;flex-direction:column;gap:4px}
/* faq */
.faq{max-width:820px;margin:0 auto;display:flex;flex-direction:column;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;padding:22px 40px 22px 0;font-weight:700;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"Q.";font-family:var(--latin);margin-right:10px;color:var(--hl-ink)}
.faq summary::after{content:"";position:absolute;right:8px;top:50%;width:10px;height:10px;border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);transform:translateY(-70%) rotate(45deg);transition:transform .2s}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq details p{padding:0 0 22px 30px;color:var(--muted);font-size:.93rem}
/* closing */
.closing{padding-block:96px;text-align:center}
.closing h2{font-size:clamp(1.6rem,4vw,2.4rem);font-weight:900}
.closing p{color:var(--muted);margin-top:14px}
.closing .row{justify-content:center;margin-top:32px}
/* footer */
footer{background:var(--sub);padding-block:56px 32px;font-size:.85rem}
footer .cols{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:32px}
@media (max-width:720px){footer .cols{grid-template-columns:1fr 1fr}}
footer h4{margin:0 0 10px;font-size:.85rem}
footer ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:6px;color:var(--muted)}
footer a{text-decoration:none}
footer .copy{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);color:var(--muted);font-size:.78rem}
@media (max-width:640px){
  body{font-size:15px}
  .sec{padding-block:64px}
  .shead{margin-bottom:32px}
  .hero{padding-block:36px 56px}
  .hero .ctas .btn{flex:1 1 100%}
  .card,.use,.plan{padding:22px}
  .maker{padding:18px}
  .closing{padding-block:72px}
  .closing .row .btn{flex:1 1 100%}
  header.site .in{gap:12px;height:58px}
  .logo{font-size:.88rem}
  .hbtns .btn{padding:8px 16px;font-size:.82rem}
  .promo{font-size:.75rem}
  .tab{flex:1 1 0;justify-content:center;padding:10px 12px}
}
@media (prefers-reduced-motion:reduce){.panel{animation:none}.tab{transition:none}html{scroll-behavior:auto}.faq summary::after{transition:none}}
/* 本番化で追加 */
.plan .no{font-family:var(--latin);font-weight:700;font-size:.8rem;color:var(--hl-ink)}
footer .fdesc{margin-top:10px;color:var(--muted)}