/* 砂言坊 · 素雅中式样式系统 */
:root {
  --paper: #f6f3ee;
  --paper-2: #efeae2;
  --ink: #26211d;
  --ink-2: #5b524a;
  --ink-3: #8a7f75;
  --clay: #8a4b38;
  --clay-deep: #6b3626;
  --clay-light: #c08a6e;
  --line: #ded5c8;
  --line-2: #eae3d9;
  --gold: #b08d57;
  --radius: 4px;
  --serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", "SimSun", Georgia, serif;
  --sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --maxw: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 600; margin: 0; letter-spacing: .04em; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

/* ---------- 导航 ---------- */
.header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(246, 243, 238, .92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line-2);
}
.header .wrap { display: flex; align-items: center; gap: 32px; height: 68px; }
.logo { font-family: var(--serif); font-size: 21px; letter-spacing: .18em; display: flex; align-items: baseline; gap: 10px; }
.logo small { font-size: 11px; letter-spacing: .3em; color: var(--ink-3); font-family: var(--sans); }
.nav { display: flex; gap: 26px; margin-left: auto; }
.nav a { font-size: 14px; color: var(--ink-2); padding: 4px 0; position: relative; letter-spacing: .08em; }
.nav a:hover, .nav a.active { color: var(--clay); }
.nav a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 1px; background: var(--clay);
}
.nav-toggle { display: none; margin-left: auto; background: none; border: 0; font-size: 20px; cursor: pointer; color: var(--ink); }

/* ---------- 中英文切换 ---------- */
.lang-btn {
  margin-left: 2px; padding: 4px 12px; font-size: 12px; letter-spacing: .12em;
  color: var(--clay); background: transparent; border: 1px solid var(--line);
  border-radius: 2px; cursor: pointer; font-family: inherit; align-self: center;
  transition: all .18s;
}
.lang-btn:hover { background: var(--clay); color: #fff; border-color: var(--clay); }
/* 静态长文双语：靠 <html lang> 控制显隐 */
html[lang="en"] .lang-zh { display: none !important; }
html:not([lang="en"]) .lang-en { display: none !important; }

/* ---------- 通用 ---------- */
.eyebrow { font-size: 12px; letter-spacing: .32em; color: var(--clay); text-transform: uppercase; margin-bottom: 14px; }
.section { padding: 84px 0; }
.section.alt { background: var(--paper-2); }
.sec-head { margin-bottom: 42px; max-width: 680px; }
.sec-head h2 { font-size: 30px; margin-bottom: 14px; }
.sec-head p { color: var(--ink-2); margin: 0; }
.divider { width: 48px; height: 2px; background: var(--clay-light); margin: 26px 0; }

.btn {
  display: inline-block; padding: 12px 30px; border: 1px solid var(--clay);
  color: var(--clay); font-size: 14px; letter-spacing: .1em; background: transparent;
  cursor: pointer; border-radius: var(--radius); transition: .25s; font-family: var(--sans);
}
.btn:hover { background: var(--clay); color: #fff; }
.btn.solid { background: var(--clay); color: #fff; }
.btn.solid:hover { background: var(--clay-deep); border-color: var(--clay-deep); }
.btn.ghost { border-color: var(--line); color: var(--ink-2); }
.btn.ghost:hover { border-color: var(--ink); color: var(--ink); background: transparent; }
.btn.sm { padding: 7px 16px; font-size: 13px; }

/* ---------- Hero ---------- */
.hero { padding: 96px 0 72px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 60px; align-items: center; }
.hero h1 { font-size: 46px; line-height: 1.35; margin-bottom: 20px; }
.hero h1 em { font-style: normal; color: var(--clay); }
.hero p.lead { font-size: 16px; color: var(--ink-2); max-width: 480px; }
.hero-actions { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }
.hero-art { position: relative; display: flex; justify-content: center; }
.hero-art img {
  display: block; width: 100%; max-width: 520px; max-height: 460px;
  object-fit: contain; margin: 0 auto;
}
.hero-art .seal {
  position: absolute; right: 6%; bottom: 8%; background: var(--clay); color: #fff;
  font-family: var(--serif); font-size: 13px; padding: 10px 8px; border-radius: 3px;
  writing-mode: vertical-rl; letter-spacing: .2em; opacity: .92;
}

/* ---------- 作品卡片 ---------- */
.grid-works { display: grid; grid-template-columns: repeat(3, 1fr); gap: 34px 28px; }
.card { background: #fff; border: 1px solid var(--line-2); transition: .3s; display: flex; flex-direction: column; }
.card:hover { transform: translateY(-4px); box-shadow: 0 14px 34px rgba(38, 33, 29, .09); border-color: var(--line); }
.card-img { position: relative; background: linear-gradient(180deg, #faf8f4, #f1ece4); aspect-ratio: 1/1; overflow: hidden; }
.card-img img { width: 100%; height: 100%; object-fit: contain; padding: 18px; transition: .5s; }
.card:hover .card-img img { transform: scale(1.04); }
.badge {
  position: absolute; top: 12px; left: 12px; font-size: 11px; letter-spacing: .12em;
  background: rgba(38, 33, 29, .82); color: #fff; padding: 3px 10px; border-radius: 2px;
}
.badge.sold { background: rgba(138, 75, 56, .9); }
.badge.order { background: var(--gold); }
.card-body { padding: 18px 20px 22px; }
.card-body h3 { font-size: 18px; margin-bottom: 6px; }
.card-meta { font-size: 12.5px; color: var(--ink-3); letter-spacing: .04em; }
.card-price { margin-top: 12px; display: flex; align-items: baseline; justify-content: space-between; }
.price { font-family: var(--serif); color: var(--clay); font-size: 20px; }
.price small { font-size: 12px; color: var(--ink-3); margin-left: 3px; font-family: var(--sans); }
.price.sold { color: var(--ink-3); }

/* ---------- 筛选 ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 26px; padding: 22px 0 30px; border-bottom: 1px solid var(--line-2); margin-bottom: 34px; }
.fgroup { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.fgroup > span { font-size: 12px; color: var(--ink-3); letter-spacing: .16em; }
.chip { border: 1px solid var(--line); background: #fff; padding: 5px 14px; font-size: 13px; cursor: pointer; border-radius: 20px; color: var(--ink-2); transition: .2s; }
.chip:hover { border-color: var(--clay-light); color: var(--clay); }
.chip.on { background: var(--clay); border-color: var(--clay); color: #fff; }
.count { color: var(--ink-3); font-size: 13px; margin: 0 0 18px; }

/* ---------- 作品详情 ---------- */
.detail { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; padding: 44px 0 80px; }
.gallery { background: linear-gradient(180deg, #faf8f4, #f0ebe3); border: 1px solid var(--line-2); }
.gallery-main { aspect-ratio: 1/1; display: flex; align-items: center; justify-content: center; padding: 30px; }
.gallery-main img { max-height: 100%; object-fit: contain; }
.thumbs { display: flex; gap: 10px; padding: 12px; border-top: 1px solid var(--line-2); }
.thumbs img { width: 64px; height: 64px; object-fit: contain; background: #fff; border: 1px solid var(--line-2); cursor: pointer; padding: 6px; }
.thumbs img.on { border-color: var(--clay); }
.detail h1 { font-size: 34px; margin-bottom: 10px; }
.detail .sub { color: var(--ink-3); font-size: 13.5px; letter-spacing: .1em; margin-bottom: 22px; }
.spec { border-top: 1px solid var(--line-2); margin: 22px 0; }
.spec div { display: flex; border-bottom: 1px solid var(--line-2); font-size: 14px; }
.spec dt { width: 88px; color: var(--ink-3); padding: 11px 0; flex: none; }
.spec dd { margin: 0; padding: 11px 0; color: var(--ink); }
.story { color: var(--ink-2); font-size: 14.5px; border-left: 2px solid var(--clay-light); padding-left: 16px; margin: 24px 0; }
.tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 26px; }
.tag { font-size: 12px; color: var(--clay); border: 1px solid var(--clay-light); padding: 2px 10px; border-radius: 2px; }
.cta-box { background: var(--paper-2); border: 1px solid var(--line); padding: 22px; }
.cta-box h4 { font-size: 16px; margin-bottom: 6px; }
.cta-box p { font-size: 13px; color: var(--ink-2); margin-bottom: 14px; }
.qr-row { display: flex; gap: 18px; align-items: center; }
.qr-row img { width: 92px; height: 92px; background: #fff; border: 1px solid var(--line); }

/* ---------- 内容页 ---------- */
.prose { max-width: 760px; }
.prose h2 { font-size: 26px; margin: 46px 0 16px; }
.prose h3 { font-size: 19px; margin: 30px 0 12px; }
.prose p { color: var(--ink-2); font-size: 15px; line-height: 1.95; }
.prose ul { color: var(--ink-2); padding-left: 20px; line-height: 2; }
.timeline { border-left: 1px solid var(--line); padding-left: 26px; margin-top: 10px; }
.timeline li { list-style: none; position: relative; padding-bottom: 22px; color: var(--ink-2); }
.timeline li::before { content: ""; position: absolute; left: -31px; top: 10px; width: 9px; height: 9px; border-radius: 50%; background: var(--clay-light); }
.timeline strong { font-family: var(--serif); color: var(--clay); margin-right: 12px; }
.cards3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.info-card { background: #fff; border: 1px solid var(--line-2); padding: 26px; }
.info-card h4 { font-size: 17px; margin-bottom: 10px; }
.info-card p, .info-card li { font-size: 14px; color: var(--ink-2); margin: 0; }

/* ---------- 页脚 ---------- */
.footer { background: var(--ink); color: #cbc3b8; padding: 56px 0 32px; margin-top: 40px; }
.footer .wrap { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
.footer h5 { color: #fff; font-family: var(--serif); font-size: 16px; margin: 0 0 14px; letter-spacing: .1em; }
.footer p, .footer li { font-size: 13.5px; line-height: 2; margin: 0; }
.footer ul { list-style: none; padding: 0; }
.footer a:hover { color: #fff; }
.footer .bottom { grid-column: 1/-1; border-top: 1px solid rgba(255,255,255,.12); padding-top: 20px; font-size: 12.5px; color: #8d857b; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* ---------- 后台 ---------- */
.admin-body { background: var(--paper-2); }
.login-box { max-width: 380px; margin: 14vh auto; background: #fff; border: 1px solid var(--line); padding: 34px; }
.login-box h2 { font-size: 22px; margin-bottom: 8px; }
.login-box p { font-size: 13px; color: var(--ink-3); }
.admin-top { background: var(--ink); color: #fff; padding: 14px 0; }
.admin-top .wrap { display: flex; align-items: center; gap: 18px; }
.admin-top a { color: #cbc3b8; font-size: 13.5px; }
.admin-top a:hover { color: #fff; }
.admin-top .sp { margin-left: auto; }
.panel { background: #fff; border: 1px solid var(--line); margin-bottom: 22px; }
.panel h3 { font-size: 17px; padding: 16px 20px; border-bottom: 1px solid var(--line-2); }
.panel .body { padding: 20px; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 12.5px; color: var(--ink-3); margin-bottom: 5px; letter-spacing: .06em; }
.field input, .field textarea, .field select {
  width: 100%; padding: 9px 11px; border: 1px solid var(--line); background: #fdfcfa;
  font-family: var(--sans); font-size: 14px; color: var(--ink); border-radius: 3px;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--clay); }
.field textarea { min-height: 84px; resize: vertical; line-height: 1.7; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.row3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }
.admin-list { display: grid; gap: 10px; }
.admin-item { display: flex; align-items: center; gap: 14px; border: 1px solid var(--line-2); padding: 10px 14px; background: #fdfcfa; }
.admin-item img { width: 46px; height: 46px; object-fit: contain; background: #fff; border: 1px solid var(--line-2); }
.admin-item .nm { font-family: var(--serif); font-size: 15px; }
.admin-item .mt { font-size: 12px; color: var(--ink-3); }
.admin-item .sp { margin-left: auto; display: flex; gap: 8px; }
.hint { font-size: 12.5px; color: var(--ink-3); background: #fdfcfa; border: 1px dashed var(--line); padding: 12px 14px; line-height: 1.8; }
.toast {
  position: fixed; left: 50%; bottom: 40px; transform: translateX(-50%) translateY(20px);
  background: var(--ink); color: #fff; padding: 11px 24px; font-size: 14px; border-radius: 3px;
  opacity: 0; pointer-events: none; transition: .3s; z-index: 200;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.empty { text-align: center; padding: 60px 0; color: var(--ink-3); }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .nav { display: none; position: absolute; top: 68px; left: 0; right: 0; background: var(--paper);
    flex-direction: column; gap: 0; padding: 8px 28px 18px; border-bottom: 1px solid var(--line); }
  .nav.open { display: flex; }
  .nav a { padding: 11px 0; border-bottom: 1px solid var(--line-2); }
  .nav-toggle { display: block; }
  .lang-btn { align-self: flex-start; margin-top: 12px; }
  .hero-grid, .detail { grid-template-columns: 1fr; gap: 34px; }
  .hero h1 { font-size: 34px; }
  .grid-works, .cards3 { grid-template-columns: repeat(2, 1fr); }
  .footer .wrap { grid-template-columns: 1fr; gap: 26px; }
  .section { padding: 56px 0; }
  .row3 { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .grid-works, .cards3 { grid-template-columns: 1fr; }
  .wrap { padding: 0 18px; }
  .row2 { grid-template-columns: 1fr; }
  .detail h1 { font-size: 26px; }
}