/* 家家購 base layout: desktop = layout A (dense marketplace), < 960px = layout B (shopping app) */

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--font); font-size: 14px; line-height: 1.5; color: var(--text); background: var(--bg); }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button, input { font: inherit; }
button { cursor: pointer; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }
.ico { width: 24px; height: 24px; }
[hidden] { display: none !important; }

/* ---------- fixed disclaimer (spec 2.1) ---------- */
.disclaimer { position: sticky; top: 0; z-index: 50; background: var(--notice-bg); color: var(--notice-text); font-size: 12px; line-height: 1.4; padding: 6px var(--gutter); text-align: center; }
.disclaimer a { color: #fde68a; text-decoration: underline; }

/* ---------- logo ---------- */
.logo { display: inline-flex; align-items: center; gap: 8px; font-weight: 800; white-space: nowrap; }
.logo-mark { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; background: var(--surface); color: var(--primary); font-size: 18px; font-weight: 900; box-shadow: inset 0 0 0 2px currentColor; }
.logo-text { font-size: 22px; }
.logo-sub { display: block; font-size: 11px; font-weight: 500; opacity: .85; letter-spacing: .1em; }

/* ---------- desktop header (A) ---------- */
.hdr-desk { display: none; }
.util { background: #f0f0f0; font-size: 12px; color: #555; }
.util .wrap { display: flex; gap: 14px; justify-content: flex-end; padding-top: 5px; padding-bottom: 5px; }
.util-promo { color: var(--primary); font-weight: 700; margin-right: auto; }
.top { background: var(--primary); color: #fff; }
.top .wrap { display: flex; align-items: center; gap: 16px; padding-top: 12px; padding-bottom: 12px; }
.search-col { flex: 1; min-width: 0; }
.search { display: flex; background: #fff; border-radius: var(--radius-sm); overflow: hidden; border: 2px solid #fff; }
.search input { flex: 1; min-width: 0; border: 0; padding: 9px 12px; outline: none; color: var(--text); }
.search button { border: 0; background: var(--accent); color: var(--accent-text); padding: 0 20px; font-weight: 700; }
.head-icons { display: flex; gap: 16px; }
.head-icons a { display: flex; flex-direction: column; align-items: center; gap: 2px; font-size: 11px; position: relative; }
.badge { position: absolute; top: -4px; right: -6px; background: var(--accent); color: var(--accent-text); border-radius: 999px; font-size: 10px; padding: 0 5px; font-weight: 700; }
.catbar { background: var(--surface); border-bottom: 1px solid var(--line); }
.catbar .wrap { display: flex; gap: 22px; overflow-x: auto; white-space: nowrap; padding-top: 10px; padding-bottom: 10px; font-weight: 700; }
.catbar .hot { color: var(--price); }

/* ---------- mobile header (B) ---------- */
.hdr-mob { background: linear-gradient(180deg, var(--primary), var(--hero-2)); color: #fff; padding: 10px var(--gutter) 0; }
.bar-row { display: flex; align-items: center; gap: 10px; }
.bar-row .logo-mark { width: 30px; height: 30px; font-size: 16px; border-radius: 8px; }
.pill { flex: 1; display: flex; align-items: center; gap: 8px; background: #fff; color: var(--muted); border-radius: 999px; padding: 6px 14px; }
.pill .ico { width: 16px; height: 16px; flex: none; }
.pill input { border: 0; outline: none; flex: 1; min-width: 0; font-size: 13px; color: var(--text); }
.ib { position: relative; }
.ib .badge { background: #fff; color: var(--primary); }
.chips { display: flex; gap: 18px; overflow-x: auto; white-space: nowrap; padding: 10px 0 8px; }
.chips a { opacity: .85; padding-bottom: 4px; }
.chips a.on { opacity: 1; font-weight: 800; border-bottom: 3px solid #fff; }

/* bottom tab bar (B) */
.tabbar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 45; background: var(--surface); border-top: 1px solid var(--line); display: grid; grid-template-columns: repeat(5, 1fr); padding: 6px 0 calc(8px + env(safe-area-inset-bottom)); }
.tabbar a { display: flex; flex-direction: column; align-items: center; gap: 2px; font-size: 11px; color: var(--muted); }
.tabbar a.on { color: var(--primary); font-weight: 700; }
.tabbar .ico { width: 22px; height: 22px; }

@media (min-width: 960px) {
  .hdr-desk { display: block; }
  .hdr-mob, .tabbar { display: none; }
}

/* ---------- home ---------- */
.hero-grid { display: grid; gap: 10px; margin-top: 12px; }
@media (min-width: 960px) { .hero-grid { grid-template-columns: 190px 1fr 240px; } }
.side-cats { display: none; background: var(--surface); border-radius: var(--radius); padding: 8px 0; }
@media (min-width: 960px) { .side-cats { display: block; } }
.side-cats a { display: flex; align-items: center; gap: 10px; padding: 8px 14px; }
.side-cats a:hover { background: var(--primary-soft); color: var(--primary); }
.side-cats .ico { width: 18px; height: 18px; color: var(--primary); }
.hero { border-radius: var(--radius-lg); min-height: 180px; color: #fff; padding: 22px; display: flex; flex-direction: column; justify-content: center;
        background: linear-gradient(120deg, var(--hero-1), var(--hero-2)); }
@media (min-width: 960px) { .hero { border-radius: var(--radius); min-height: 240px; padding: 28px; } }
.hero h1 { margin: 0; font-size: clamp(24px, 5vw, 42px); line-height: 1.15; font-weight: 900; }
.hero p { margin: 8px 0 14px; opacity: .95; }
.hero .cta { align-self: flex-start; background: #fff; color: var(--primary); font-weight: 800; padding: 8px 18px; border-radius: 999px; }
.promo-col { display: grid; gap: 10px; grid-template-columns: 1fr 1fr; }
@media (min-width: 960px) { .promo-col { grid-template-columns: 1fr; } }
.promo { border-radius: var(--radius); padding: 14px; background: var(--surface); border: 1px solid var(--line); display: flex; flex-direction: column; gap: 4px; }
.promo b { font-size: 16px; color: var(--primary); }
.promo.coupon { background: var(--accent); color: var(--accent-text); border: 0; }
.promo.coupon b { color: inherit; font-size: 20px; }

.panel { background: var(--surface); border-radius: 12px; padding: 14px 10px; margin-top: 10px; }
@media (min-width: 960px) { .cats-panel { display: none; } }
.cats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px 6px; }
.cat { display: flex; flex-direction: column; align-items: center; gap: 6px; font-size: 12px; text-align: center; }
.cat-ico { width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center; background: var(--primary-soft); color: var(--primary); }

.section { background: var(--surface); border-radius: var(--radius); padding: 14px; margin-top: 12px; }
.flash-head { background: var(--price); color: #fff; margin: -14px -14px 12px; padding: 10px 14px; border-radius: var(--radius) var(--radius) 0 0; display: flex; align-items: center; gap: 12px; }
.flash-head h2 { margin: 0; font-size: 20px; font-style: italic; font-weight: 900; }
.empty { color: var(--muted); margin: 0; }

.error-page h1 { margin: 0 0 8px; font-size: 22px; }
.error-page .detail { white-space: pre-wrap; background: #f6f6f6; padding: 10px; font-size: 12px; }
.btn { display: inline-block; background: var(--primary); color: #fff; padding: 8px 18px; border-radius: 999px; font-weight: 700; }

/* ---------- footer ---------- */
.site-footer { margin-top: 24px; background: #2a2a2a; color: #bbb; font-size: 12px; padding: 24px 0 96px; }
.site-footer .wrap { display: grid; gap: 6px; }
.site-footer strong { color: #fff; }
.site-footer a { text-decoration: underline; }
.site-footer .ver { color: #777; }
@media (min-width: 960px) { .site-footer { padding-bottom: 24px; } }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }