/* 鋼好想積 — 網站樣式 */
:root {
  --bg: #f4f5f8;
  --surface: #ffffff;
  --surface-2: #eef0f5;
  --text: #17202e;
  --muted: #5d6676;
  --line: #dde1e8;
  --brand: #13294b;
  --brand-ink: #ffffff;
  --accent: #d7263d;
  --gold: #e8a400;
  --link: #1d4fbf;
  --price: #c41e34;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e131c;
    --surface: #161d29;
    --surface-2: #1d2635;
    --text: #e7ebf2;
    --muted: #9aa4b5;
    --line: #2a3445;
    --brand: #0b1730;
    --link: #8db4ff;
    --price: #ff6b7d;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 system-ui, -apple-system, "PingFang TC", "Microsoft JhengHei", "Noto Sans TC", "Noto Sans CJK TC", sans-serif;
}
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }
.wrap { max-width: 1040px; margin: 0 auto; padding-inline: 16px; }

/* ---------- header ---------- */
.site-header { background: var(--brand); color: var(--brand-ink); }
.site-header .wrap { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; padding-block: 12px; }
.logo { color: inherit; font-weight: 800; font-size: 1.35rem; letter-spacing: .04em; display: flex; align-items: center; gap: 8px; }
.logo:hover { text-decoration: none; }
.logo-mark { width: 30px; height: 30px; border-radius: 8px; background: linear-gradient(135deg, var(--accent) 0 50%, var(--gold) 50% 100%); display: inline-grid; place-items: center; font-size: .9rem; color: #fff; }
.tagline { color: rgba(255,255,255,.7); font-size: .85rem; }
.site-nav { margin-left: auto; display: flex; gap: 14px; flex-wrap: wrap; font-size: .95rem; }
.site-nav a { color: rgba(255,255,255,.9); }
.rate-pill { font-size: .8rem; background: rgba(255,255,255,.12); padding: 4px 10px; border-radius: 999px; white-space: nowrap; }

/* ---------- layout ---------- */
main { padding-block: 24px 48px; }
h1 { font-size: 1.6rem; line-height: 1.35; margin: 0 0 6px; }
h2 { font-size: 1.2rem; margin: 32px 0 12px; }
.sub { color: var(--muted); margin: 0 0 16px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; }
.crumbs { font-size: .85rem; color: var(--muted); margin-bottom: 12px; }
.crumbs a { color: var(--muted); }
.grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }

/* ---------- hero / search ---------- */
.hero { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
.hero h1 { font-size: 1.5rem; }
.search { display: flex; gap: 8px; margin-top: 12px; }
.search input, .calc input {
  flex: 1; min-width: 0; font: inherit; padding: 12px 14px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--surface-2); color: var(--text);
}
.search input:focus, .calc input:focus { outline: 2px solid var(--link); outline-offset: 1px; }
.hint { font-size: .85rem; color: var(--muted); margin-top: 8px; }
.calc { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-top: 16px; }
.calc input { max-width: 180px; flex: 0 1 180px; }
.calc output { font-weight: 700; font-size: 1.15rem; color: var(--price); }

/* ---------- kit list ---------- */
.kits { list-style: none; margin: 0; padding: 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.kits li + li { border-top: 1px solid var(--line); }
.kits a { display: grid; grid-template-columns: auto 1fr auto; gap: 12px; align-items: center; padding: 12px 16px; color: inherit; }
.kits a:hover { background: var(--surface-2); text-decoration: none; }
.kit-name { font-weight: 600; }
.kit-jp { display: block; color: var(--muted); font-size: .82rem; font-weight: 400; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.kit-meta { display: block; color: var(--muted); font-size: .8rem; font-weight: 400; }
.kit-name-wrap { min-width: 0; }
.kit-price { text-align: right; white-space: nowrap; }
.kit-price .jpy { display: block; color: var(--muted); font-size: .85rem; }
.twd { color: var(--price); font-weight: 700; }
.badge { display: inline-grid; place-items: center; min-width: 54px; padding: 4px 8px; border-radius: 8px; background: var(--brand); color: #fff; font-size: .75rem; font-weight: 700; letter-spacing: .02em; }
.badge.sm { min-width: 0; padding: 2px 8px; }
.tag { display: inline-block; font-size: .72rem; padding: 1px 8px; border-radius: 999px; background: var(--surface-2); color: var(--muted); border: 1px solid var(--line); margin-left: 6px; vertical-align: 1px; }
.tag.limited { color: var(--accent); border-color: currentColor; background: transparent; }

/* ---------- grade cards ---------- */
.grade-card { display: block; color: inherit; }
.grade-card:hover { text-decoration: none; border-color: var(--link); }
.grade-card strong { font-size: 1.1rem; display: flex; align-items: center; gap: 8px; }
.grade-card span { color: var(--muted); font-size: .85rem; }

/* ---------- kit detail ---------- */
.kit-head { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 760px) { .kit-head { grid-template-columns: 1.4fr 1fr; align-items: start; } }
.price-card .label { color: var(--muted); font-size: .85rem; }
.price-card .big-jpy { font-size: 1.9rem; font-weight: 800; }
.price-card .big-twd { font-size: 1.6rem; }
.price-card hr { border: 0; border-top: 1px solid var(--line); margin: 14px 0; }
.spec { width: 100%; border-collapse: collapse; }
.spec th, .spec td { text-align: left; padding: 9px 4px; border-bottom: 1px solid var(--line); vertical-align: top; }
.spec th { color: var(--muted); font-weight: 500; width: 7.5em; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }
.btn { display: inline-block; padding: 10px 16px; border-radius: 10px; font-weight: 600; border: 1px solid var(--line); background: var(--surface); color: var(--text); }
.btn:hover { text-decoration: none; border-color: var(--link); }
.btn.primary { background: var(--brand); color: #fff; border-color: var(--brand); }
.note { color: var(--muted); font-size: .82rem; margin-top: 10px; }

/* ---------- pager ---------- */
.pager { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 16px; }
.pager a, .pager span { padding: 6px 12px; border-radius: 8px; border: 1px solid var(--line); background: var(--surface); }
.pager span.cur { background: var(--brand); color: #fff; border-color: var(--brand); }

/* ---------- prose pages ---------- */
.prose { max-width: 760px; }
.prose h2 { margin-top: 28px; }
.prose li { margin-bottom: 4px; }

/* ---------- ads ---------- */
.ad-slot { margin: 20px 0; min-height: 90px; border: 2px dashed var(--line); border-radius: 10px; display: grid; place-items: center; color: var(--muted); font-size: .8rem; }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--line); color: var(--muted); font-size: .82rem; padding-block: 24px 40px; }
.site-footer p { margin: 4px 0; }
.site-footer nav { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 8px; }

@media (max-width: 560px) {
  h1 { font-size: 1.35rem; }
  .tagline { display: none; }
  .site-nav { margin-left: 0; width: 100%; }
  .kits a { grid-template-columns: 1fr auto; }
  .kits .badge { display: none; }
  .price-card .big-jpy { font-size: 1.6rem; }
}