:root{
  --bg:#EEF0F3; --surface:#fff; --ink:#14161A; --muted:#5B6068;
  --line:#E4E7EC; --accent:#E60023; --radius:16px;
  --shadow:0 1px 2px rgba(20,22,26,.04),0 8px 24px rgba(20,22,26,.06);
  --cut:#B42318; --cut-bg:#FEF3F2; --iter:#B54708; --iter-bg:#FFFAEB; --scale:#067647; --scale-bg:#ECFDF3;
}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Arial,sans-serif;line-height:1.55;-webkit-font-smoothing:antialiased}
.display{font-family:"Archivo","Arial Narrow",Impact,sans-serif;letter-spacing:-.02em;font-weight:800}
a{color:inherit}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px}

/* top bar */
.topbar{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.topbar .in{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;text-decoration:none}
.logo{width:30px;height:30px;border-radius:9px;background:var(--accent);display:grid;place-items:center;flex:none}
.logo svg{width:18px;height:18px}
.nav{display:flex;gap:6px;align-items:center}
.nav a{padding:8px 14px;border-radius:10px;text-decoration:none;font-weight:600;font-size:14px;color:var(--muted)}
.nav a.active,.nav a:hover{background:var(--bg);color:var(--ink)}

/* layout */
main{padding:26px 0 60px}
h1.page{font-size:26px;margin-bottom:4px}
.sub{color:var(--muted);font-size:14.5px;margin-bottom:22px}
.grid{display:grid;grid-template-columns:340px 1fr;gap:20px;align-items:start}
@media(max-width:880px){.grid{grid-template-columns:1fr}}

.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}
.card h2{font-size:14px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:14px}
label{display:block;font-size:13px;font-weight:600;color:var(--muted);margin:12px 0 5px}
textarea,input[type=text],input[type=password],input[type=number]{width:100%;border:1px solid var(--line);border-radius:10px;padding:11px 12px;font:inherit;background:#fff;color:var(--ink)}
textarea{min-height:150px;resize:vertical;font-size:13.5px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.btn{display:inline-flex;align-items:center;gap:8px;justify-content:center;font-weight:600;font-size:14.5px;padding:12px 18px;border-radius:11px;border:1px solid transparent;cursor:pointer;text-decoration:none}
.btn-primary{background:var(--ink);color:#fff;width:100%}
.btn-primary:disabled{opacity:.55;cursor:default}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-sm{padding:8px 12px;font-size:13px}

/* plan output */
.plan{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px}
.plan h2{font-size:19px;margin:18px 0 8px;letter-spacing:-.01em;text-transform:none;color:var(--ink)}
.plan h2:first-child{margin-top:0}
.plan h3{font-size:16px;margin:14px 0 6px}
.plan ul,.plan ol{margin:6px 0 12px 20px}
.plan li{margin:3px 0;font-size:14.5px}
.plan p{margin:8px 0;font-size:14.5px}
.plan a{color:var(--accent)}

/* pin cards */
.pins{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:20px}
@media(max-width:880px){.pins{grid-template-columns:1fr}}
.pin{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column}
.pin .body{padding:16px}
.pin .score{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;color:var(--accent);background:rgba(230,0,35,.08);padding:3px 9px;border-radius:999px}
.pin h4{font-size:16px;margin:8px 0 4px}
.pin .trend{font-size:12.5px;color:var(--muted);margin-bottom:10px}
.field{margin:10px 0}
.field .k{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);display:flex;justify-content:space-between;align-items:center}
.field .v{font-size:13.5px;background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:8px 10px;margin-top:3px;white-space:pre-wrap}
.kw{display:flex;flex-wrap:wrap;gap:6px;margin-top:4px}
.kw span{font-size:12px;background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:3px 9px}
.copy{cursor:pointer;color:var(--accent);font-size:11px;font-weight:700;border:none;background:none}
.pin img{width:100%;display:block;background:#f3f4f6}
.pin .actions{padding:12px 16px;border-top:1px solid var(--line);display:flex;gap:8px}

.spinner{display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.muted{color:var(--muted);font-size:13.5px}
.err{color:var(--cut);background:var(--cut-bg);border:1px solid #FEE4E2;border-radius:10px;padding:10px 12px;font-size:13.5px;margin-top:10px}
.hist a{display:block;padding:7px 0;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted);text-decoration:none}
.hist a:last-child{border:none}

/* login */
.login-wrap{min-height:100vh;display:grid;place-items:center;padding:22px}
.login{width:100%;max-width:360px;background:var(--surface);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:32px}
.login .logo{width:44px;height:44px;border-radius:12px;margin:0 auto 16px}
.login .logo svg{width:26px;height:26px}
.login h1{text-align:center;font-size:22px;margin-bottom:4px}
.login p{text-align:center;color:var(--muted);font-size:13.5px;margin-bottom:20px}