:root{--c:#4f46e5;--bg:#f4f6fb;--t:#0f172a;--m:#64748b;--b:#e2e8f0;--card:#fff;--ok:#15803d;--err:#b91c1c}
*{box-sizing:border-box}body{margin:0;font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--t);background:var(--bg)}
a{color:var(--c);text-decoration:none}a:hover{text-decoration:underline}.wrap{max-width:960px;margin:0 auto;padding:0 16px}
.nav{background:#fff;border-bottom:1px solid var(--b);position:sticky;top:0;z-index:10}.nav .wrap{display:flex;align-items:center;gap:14px;height:58px}.nav .sp{flex:1}.nav a{font-size:14px;color:var(--m)}.logo{display:inline-flex;align-items:center;gap:8px;font-weight:800;font-size:20px;color:var(--t)!important;text-decoration:none}.logo:hover{text-decoration:none}.logo span{color:var(--c)}.logo-img{width:32px;height:32px;object-fit:contain;display:block}
.btn{display:inline-block;background:var(--c);color:#fff!important;padding:9px 18px;border-radius:9px;font-weight:600;border:0;cursor:pointer;font-size:15px;text-decoration:none!important}.btn.sm{padding:5px 12px;font-size:13px}.btn.o{background:#fff;color:var(--c)!important;border:1px solid var(--c)}.btn.d{background:var(--err)}
body{display:flex;flex-direction:column;min-height:100vh}main.wrap{flex:1;width:100%;padding:40px 16px 64px}h1{font-size:28px;margin:0 0 16px}h2{font-size:20px}
.card{background:var(--card);border:1px solid var(--b);border-radius:14px;padding:20px;margin-bottom:16px}
.flash{padding:12px 16px;border-radius:10px;margin-bottom:16px;background:#dcfce7;color:var(--ok)}.errors{background:#fee2e2;color:var(--err);padding:12px 16px;border-radius:10px;margin-bottom:16px}.errors ul{margin:0;padding-left:18px}
label{display:block;font-weight:600;margin:14px 0 4px;font-size:14px}input[type=text],input[type=email],input[type=password],input[type=url],input[type=date],textarea,select{width:100%;padding:10px 12px;border:1px solid var(--b);border-radius:9px;font:inherit;background:#fff}textarea{min-height:120px}
.chk{display:flex;gap:8px;align-items:center;font-weight:400;margin:6px 0}.hp{position:absolute;left:-9999px;height:0;overflow:hidden}
.tabs{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}.tabs a{padding:6px 14px;border:1px solid var(--b);border-radius:99px;background:#fff;color:var(--m);font-size:14px}.tabs a.on{background:var(--c);color:#fff;border-color:var(--c)}
.feed{list-style:none;margin:0;padding:0}.feed li{display:flex;gap:14px;background:#fff;border:1px solid var(--b);border-radius:12px;padding:14px;margin-bottom:10px}
.vote{min-width:52px;text-align:center}.vote button{background:none;border:1px solid var(--b);border-radius:8px;padding:4px 8px;cursor:pointer;color:var(--m);width:100%}.vote button.on{color:var(--c);border-color:var(--c);background:#eef2ff}.vote b{display:block;font-size:15px}
.thumb{width:90px;height:68px;object-fit:cover;border-radius:8px;flex:none}.feed h3{margin:0;font-size:17px}.feed p{margin:2px 0 0;color:var(--m);font-size:14px}.meta{font-size:12px;color:var(--m)}
.tag{font-size:11px;font-weight:700;padding:2px 9px;border-radius:99px;display:inline-block}.want,.idea{background:#dbeafe;color:#1d4ed8}.prov,.promotion{background:#dcfce7;color:#15803d}.st-expired{background:#fee2e2;color:#b91c1c}.st-provided{background:#fef3c7;color:#b45309}
.collage{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:6px;margin:14px 0}.collage img{width:100%;height:140px;object-fit:cover;border-radius:8px;cursor:zoom-in}.collage img:first-child{grid-column:span 2;grid-row:span 2;height:286px}
.lb{display:none;position:fixed;inset:0;background:rgba(0,0,0,.9);z-index:50;align-items:center;justify-content:center}.lb.on{display:flex}.lb img{max-width:92vw;max-height:88vh}.lb button{position:absolute;top:50%;background:none;border:0;color:#fff;font-size:44px;cursor:pointer;padding:12px}.lb .p{left:8px}.lb .n{right:8px}.lb .x{top:12px;right:16px;font-size:34px}
.body img{max-width:100%}.vid{position:relative;padding-top:56.25%;margin:14px 0}.vid iframe{position:absolute;inset:0;width:100%;height:100%;border:0;border-radius:10px}
.msg{padding:8px 12px;border-radius:12px;margin:6px 0;max-width:80%;white-space:pre-wrap}.msg.me{background:var(--c);color:#fff;margin-left:auto}.msg.th{background:#e2e8f0}
.hero{text-align:center;padding:36px 0 20px}.hero h1{font-size:clamp(28px,5vw,44px);margin:0 0 8px}.hero p{color:var(--m);max-width:620px;margin:0 auto 18px}
footer{background:#fff;text-align:center;color:var(--m);font-size:14px;padding:28px 0;border-top:1px solid var(--b);margin-top:auto}footer .wrap{line-height:2}footer a{margin:0 4px}
.ql-wrap{background:#fff}#editor{height:200px}

h1{margin:0 0 20px}.card h1{margin-bottom:12px}.card>p:last-child,.card form>p:last-child{margin-bottom:0}
.feed li{align-items:flex-start;padding:16px 18px;margin-bottom:12px}.feed li:only-child{display:block}
.tabs{margin:4px 0 20px;align-items:center}.hero{padding:8px 0 28px}.hero p{margin-bottom:22px}
form.card,.card{padding:24px 26px}.card form label:first-of-type{margin-top:0}
.btn+.btn{margin-left:6px}.tabs+.feed,.flash+*{margin-top:0}
section.card{margin-top:24px}article.card{margin-bottom:0}
.errors,.flash{margin-bottom:24px}
input[type=file]{padding:8px 0}
.pagination,nav[role=navigation]{margin-top:24px}
@media(max-width:640px){main.wrap{padding:24px 14px 48px}.nav .wrap{gap:10px;flex-wrap:wrap;height:auto;padding-top:10px;padding-bottom:10px}.card{padding:18px}.collage img:first-child{grid-column:span 1;grid-row:span 1;height:140px}.thumb{width:64px;height:52px}}