/* Tokens, buttons and the pop-up sheet, shared by the catalog (through catalog.css) and the home page. */
:root{
  --pearl:#E5E5E3;--graphite:#25272A;--red:#C91F32;--red-deep:#A8172A;--metal:#85888A;
  --surface:#FFFFFF;--canvas:#ECECEA;--text:#1E2023;--muted:#4A4D51;--line:#D6D7D5;--field:#F4F4F2;
  --warn-bg:#FFF6E5;--warn-line:#E8C98A;--warn-text:#7A4B00;
  --bad-bg:#FDECEE;--bad-line:#E9A3AC;--bad-text:#9A1426;
  --ok-bg:#EEF4EF;--ok-line:#B9CDBD;--ok-text:#2F5A3A;
  --best-bg:#CBE6D3;--best-line:#2E7D47;--best-text:#0E4220;
  --better-bg:#DDEEE2;--better-line:#8DBB9B;--better-text:#1F5130;
  --good-bg:#F3F8F4;--good-line:#B7D3BF;--good-text:#2F5A3A;
  --r-s:10px;--r-m:14px;--r-l:20px;
  --shadow-1:0 1px 2px rgba(20,21,23,.06),0 6px 20px rgba(20,21,23,.06);
  --shadow-2:0 2px 4px rgba(20,21,23,.06),0 18px 40px rgba(20,21,23,.14);
  --ease:cubic-bezier(.2,.8,.2,1);
  --stripes:repeating-linear-gradient(115deg,rgba(255,255,255,.035) 0 14px,transparent 14px 28px);
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang TC","Noto Sans TC","Segoe UI",sans-serif;
  color:var(--text);background:var(--canvas);line-height:1.6;font-size:16px;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
/* ---------- Buttons ---------- */
.button{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:46px;padding:0 18px;border-radius:12px;font:inherit;font-weight:700;text-decoration:none;cursor:pointer;border:1px solid transparent;text-align:center;line-height:1.3;-webkit-tap-highlight-color:transparent;transition:transform .18s var(--ease),background-color .2s,box-shadow .2s,border-color .2s}
.button:active{transform:scale(.97)}
.button.primary{background:var(--red);color:#FFFFFF;box-shadow:0 1px 0 rgba(255,255,255,.18) inset,0 6px 16px rgba(201,31,50,.22)}
.button.dark{background:var(--graphite);color:var(--pearl)}
.button.secondary{background:var(--surface);color:var(--graphite);border-color:#BFC1C2}
@media (hover:hover){
  .button.primary:hover{background:var(--red-deep)}
  .button.dark:hover{background:#000}
  .button.secondary:hover{border-color:var(--graphite)}
}
.hint{font-size:13px;color:var(--muted);margin:8px 0 0}
.note{border-radius:var(--r-s);padding:10px 12px;font-weight:600}
.note.warn{background:var(--warn-bg);color:var(--warn-text);border:1px solid var(--warn-line)}
.note.bad{background:var(--bad-bg);color:var(--bad-text);border:1px solid var(--bad-line)}
.note.ok{background:var(--ok-bg);color:var(--ok-text);border:1px solid var(--ok-line)}
/* ---------- Pop-up sheet: bottom sheet on phones, centred card on larger screens ---------- */
html:has(dialog[open]){overflow:hidden}
dialog.sheet{position:fixed;inset:auto 0 0 0;margin:0;width:100%;max-width:100%;max-height:92dvh;padding:0;border:0;border-radius:var(--r-l) var(--r-l) 0 0;background:var(--surface);color:var(--text);overflow:auto;overscroll-behavior:contain;box-shadow:0 -10px 40px rgba(0,0,0,.25)}
dialog.sheet[open]{animation:sheet-up .38s var(--ease)}
dialog.sheet.is-closing{animation:sheet-down .24s ease-in forwards}
dialog.sheet::backdrop{background:rgba(16,17,19,.6);backdrop-filter:blur(2px)}
dialog.sheet[open]::backdrop{animation:fade-in .3s ease}
dialog.sheet.is-closing::backdrop{animation:fade-out .24s ease-in forwards}
@keyframes sheet-up{from{transform:translateY(40px);opacity:0}to{transform:none;opacity:1}}
@keyframes sheet-down{to{transform:translateY(40px);opacity:0}}
@keyframes fade-in{from{opacity:0}}
@keyframes fade-out{to{opacity:0}}
@media (min-width:720px){
  dialog.sheet{inset:0;margin:auto;width:min(620px,calc(100% - 48px));max-height:calc(100dvh - 64px);border-radius:var(--r-l)}
  @keyframes sheet-up{from{transform:translateY(16px) scale(.98);opacity:0}to{transform:none;opacity:1}}
  @keyframes sheet-down{to{transform:translateY(12px) scale(.98);opacity:0}}
}
.sheet.page{max-width:680px;margin:0 auto;border-radius:var(--r-l);background:var(--surface);overflow:clip;box-shadow:var(--shadow-1)}
.sheet.page .sheet-head{top:var(--header-h,0px);border-radius:var(--r-l) var(--r-l) 0 0}
.sheet-head{position:sticky;top:0;z-index:2;background:rgba(255,255,255,.96);display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:12px;padding:14px 16px 12px;border-bottom:1px solid var(--line)}
@supports (backdrop-filter:blur(8px)){.sheet-head{background:rgba(255,255,255,.86);backdrop-filter:blur(12px)}}
dialog.sheet .sheet-head::before{content:"";position:absolute;top:6px;left:50%;width:40px;height:4px;margin-left:-20px;border-radius:4px;background:#C9CBCC}
@media (min-width:720px){dialog.sheet .sheet-head::before{display:none}}
.sheet-title{margin:0;font-size:20px;line-height:1.3;font-weight:800}
.sheet-head p{margin:2px 0 0;font-size:13px;color:var(--muted)}
.sheet-head .close{min-height:38px;padding:0 14px;flex-shrink:0;border-radius:999px}
.sheet-body{padding:16px 16px 24px}
.sheet-body h3{font-size:17px;margin:24px 0 10px;font-weight:800;display:flex;align-items:center;gap:8px}
.sheet-body h3::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--red)}
.sheet-body .photo{border-radius:var(--r-m);margin-bottom:14px}
.sheet-foot{position:sticky;bottom:0;background:var(--surface);box-shadow:0 -8px 20px rgba(255,255,255,.9);border-top:1px solid var(--line);display:grid;grid-template-columns:1fr;gap:8px;padding:10px 16px calc(12px + env(safe-area-inset-bottom))}
/* ---------- Valuation sheet ---------- */
.sell-hero{position:relative;overflow:hidden;background:var(--graphite) var(--stripes);color:var(--pearl);border-radius:var(--r-l);padding:20px 18px 20px 22px;display:grid;gap:10px}
.sell-hero::before{content:"";position:absolute;inset:0 auto 0 0;width:5px;background:var(--red)}
.sell-hero h3{margin:0;font-size:21px;color:#FFFFFF}
.sell-hero h3::before{display:none}
.sell-hero p{margin:0;font-size:14px;color:#D9DAD8}
.sell-hero .tagline{font-weight:800;color:#FFFFFF;font-size:15px}
.copy-status{color:#FFFFFF}
.copy-status:empty{display:none}
.button.is-done{background:var(--best-line);color:#FFFFFF;border-color:var(--best-line)}
.steps{list-style:none;padding:0;margin:20px 0 0;display:grid}
.steps li{position:relative;display:flex;gap:14px;align-items:flex-start;padding:0 0 16px}
.steps li:not(:last-child)::after{content:"";position:absolute;left:14px;top:32px;bottom:2px;width:2px;background:var(--line)}
.steps .num{width:30px;height:30px;border-radius:50%;background:var(--graphite);color:var(--pearl);display:flex;align-items:center;justify-content:center;font-weight:800;flex-shrink:0;position:relative;z-index:1}
.steps li:first-child .num{background:var(--red)}
.steps strong{display:block;padding-top:3px}
.steps p{margin:2px 0 0;font-size:13px;color:var(--muted)}
.template{white-space:pre-wrap;background:var(--field);border:1px dashed var(--metal);border-radius:var(--r-m);padding:14px;font:inherit;font-size:15px;line-height:1.8;margin:0}
.checklist{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.checklist li{position:relative;padding-left:30px}
.checklist li::before{content:"";position:absolute;left:0;top:3px;width:20px;height:20px;border-radius:6px;background:var(--graphite) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5 9-10'/%3E%3C/svg%3E") no-repeat center}
.examples{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}
.examples li{background:var(--field);border:1px solid #E6E6E3;border-radius:var(--r-m);overflow:hidden}
.examples .frame{display:block;aspect-ratio:4/3;background:#1F2023;overflow:hidden}
.examples img{display:block;width:100%;height:100%;object-fit:contain;transition:transform .5s var(--ease)}
@media (hover:hover){.examples .frame:hover img{transform:scale(1.03)}}