/* 格物物理 · 展示站共享样式 */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --ink: #0f172a; --sub: #5b6b7f; --line: #dfe5ec; --teal: #0f766e; --teal2: #0d9488;
  --amber: #d97706; --paper: #f6f8fa; --card: #ffffff;
}
html { scroll-behavior: smooth; }
body {
  font-family: 'Microsoft YaHei','PingFang SC','Noto Sans SC',system-ui,sans-serif;
  color: var(--ink); background: var(--paper); -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}
.serif, h1, h2, h3.serif { font-family: 'Noto Serif SC','Source Han Serif SC','STSong','SimSun',serif; }
a { color: var(--teal); }
img { max-width: 100%; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* 顶栏 */
.top { position: sticky; top: 0; z-index: 30; background: rgba(15,23,42,.96); color: #e6edf5; height: 58px; display: flex; align-items: center; gap: 16px; padding: 0 22px; backdrop-filter: blur(6px); }
.top .brand { display: flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; }
.top .mark { width: 27px; height: 27px; border-radius: 8px; background: linear-gradient(135deg,#14b8a6,#0f766e); display: grid; place-items: center; font-size: 14px; font-weight: 700; }
.top .name { font-family: 'Noto Serif SC','Source Han Serif SC','STSong',serif; font-size: 19px; letter-spacing: 1.5px; }
.top nav { margin-left: auto; display: flex; gap: 20px; font-size: 13.5px; }
.top nav a { color: #9fb0c3; text-decoration: none; }
.top nav a:hover, .top nav a.on { color: #fff; }
.top .cta { background: #f59e0b; color: #3b2200; font-weight: 700; font-size: 13px; padding: 7px 14px; border-radius: 9px; text-decoration: none; white-space: nowrap; }
.top .menu-btn { display: none; background: none; border: 0; color: #e6edf5; font-size: 20px; cursor: pointer; }

/* 按钮 */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 20px; border-radius: 11px; font-size: 14.5px; text-decoration: none; border: 1px solid var(--line); background: #fff; color: var(--ink); cursor: pointer; }
.btn.primary { background: var(--teal); border-color: var(--teal); color: #fff; font-weight: 700; }
.btn.primary:hover { background: #0c6a62; }
.btn.ghost { background: transparent; }
.btn.sm { padding: 8px 14px; font-size: 13px; border-radius: 9px; }

/* 首页 hero */
.hero { padding: 72px 0 36px; display: grid; grid-template-columns: 1.12fr .88fr; gap: 44px; align-items: center; }
.hero .kicker { display: inline-flex; align-items: center; gap: 9px; font-size: 13px; color: var(--teal); background: #e7f5f2; border: 1px solid #c7e7e1; padding: 5px 12px; border-radius: 999px; }
.hero h1 { font-size: 52px; line-height: 1.22; margin: 22px 0 18px; letter-spacing: 1px; }
.hero h1 em { font-style: normal; color: var(--teal); }
.hero p { font-size: 16px; line-height: 1.85; color: var(--sub); max-width: 560px; }
.hero .acts { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.hero .shot { border-radius: 18px; overflow: hidden; border: 1px solid var(--line); box-shadow: 0 30px 60px -34px rgba(15,23,42,.45); background: #fff; }
.hero .shot img { display: block; width: 100%; }
.hero .shot .cap { font-size: 12px; color: #8b9aab; padding: 9px 12px; border-top: 1px solid var(--line); background: #fbfdff; }
.stats { display: flex; gap: 34px; padding: 26px 0 8px; flex-wrap: wrap; }
.stat b { font-family: 'Noto Serif SC',serif; font-size: 26px; display: block; }
.stat span { font-size: 12.5px; color: var(--sub); }

/* 区块 */
section { padding: 54px 0; }
.sec-head { margin-bottom: 26px; }
.sec-head .no { font-size: 12.5px; color: var(--teal); letter-spacing: 2px; font-weight: 700; }
.sec-head h2 { font-size: 30px; margin-top: 8px; letter-spacing: .5px; }
.sec-head p { color: var(--sub); font-size: 14.5px; margin-top: 10px; line-height: 1.8; }
.feats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.feat { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 20px 18px; }
.feat .ic { width: 34px; height: 34px; border-radius: 9px; background: #e7f5f2; color: var(--teal); display: grid; place-items: center; font-weight: 700; font-size: 15px; }
.feat h3 { font-size: 15.5px; margin: 12px 0 7px; }
.feat p { font-size: 13px; color: var(--sub); line-height: 1.7; }
.shots { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.shots figure { background: #fff; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.shots img { display: block; width: 100%; }
.shots figcaption { font-size: 12.5px; color: var(--sub); padding: 10px 12px; border-top: 1px solid var(--line); }

/* 表格 / 列表 */
.table-list { background: #fff; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
.row { display: grid; grid-template-columns: 120px 1fr 220px; gap: 14px; padding: 14px 18px; border-top: 1px solid var(--line); font-size: 13.5px; align-items: baseline; }
.row:first-child { border-top: 0; background: #f8fafc; font-size: 12.5px; color: #7b8a9b; }
.row .sec { color: var(--teal); font-weight: 700; font-size: 12.5px; }
.row .tags { color: #8b9aab; font-size: 12px; text-align: right; }

/* 价格 */
.price-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 18px; align-items: start; }
.card { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 26px; }
.card .badge { display: inline-block; font-size: 12px; color: #b45309; background: #fef3c7; border-radius: 6px; padding: 3px 9px; }
.card .price { font-family: 'Noto Serif SC',serif; font-size: 46px; margin: 14px 0 4px; }
.card .price small { font-size: 15px; color: var(--sub); font-family: inherit; }
.card .old { color: #9aa8b8; font-size: 13.5px; text-decoration: line-through; }
.card ul { list-style: none; margin-top: 16px; }
.card ul li { font-size: 13.5px; color: #334155; padding: 5px 0 5px 22px; position: relative; }
.card ul li::before { content: '✓'; position: absolute; left: 0; color: var(--teal); font-weight: 700; }
.card .buy { display: block; margin-top: 20px; text-align: center; }
.card .note { font-size: 12px; color: #8b9aab; margin-top: 12px; line-height: 1.7; }
.card.alt h3 { font-size: 16px; margin-bottom: 10px; }
.card.alt p { font-size: 13.5px; color: var(--sub); line-height: 1.85; }

/* FAQ */
.faq { background: #fff; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
.faq details { border-top: 1px solid var(--line); padding: 16px 20px; }
.faq details:first-child { border-top: 0; }
.faq summary { cursor: pointer; font-size: 14.5px; font-weight: 700; }
.faq p { font-size: 13.5px; color: var(--sub); line-height: 1.85; margin-top: 10px; }

/* 提示块 */
.lic { background: #f8fafc; border: 1px dashed #cbd5e1; border-radius: 14px; padding: 18px 20px; font-size: 13px; color: #5b6b7f; line-height: 1.9; }
.notice { background: #fff7ed; border: 1px solid #fed7aa; color: #9a3412; border-radius: 12px; padding: 14px 18px; font-size: 13.5px; line-height: 1.85; }
.tip { background: #e7f5f2; border: 1px solid #c7e7e1; color: #0f5f58; border-radius: 12px; padding: 14px 18px; font-size: 13.5px; line-height: 1.85; }

/* 子页 */
.page-head { padding: 46px 0 8px; }
.page-head .crumb { font-size: 12.5px; color: #8b9aab; margin-bottom: 12px; }
.page-head .crumb a { color: #8b9aab; text-decoration: none; }
.page-head .crumb a:hover { color: var(--teal); }
.page-head h1 { font-size: 36px; letter-spacing: .5px; }
.page-head p { color: var(--sub); font-size: 14.5px; margin-top: 12px; max-width: 760px; line-height: 1.85; }
.prose { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 34px 38px; margin: 26px 0 60px; }
.prose h2 { font-size: 22px; margin: 34px 0 12px; padding-top: 6px; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 16.5px; margin: 22px 0 8px; }
.prose p { font-size: 14px; color: #334155; line-height: 1.95; margin: 10px 0; }
.prose ul, .prose ol { margin: 10px 0 10px 22px; }
.prose li { font-size: 14px; color: #334155; line-height: 1.95; margin: 5px 0; }
.prose blockquote { border-left: 3px solid var(--teal2); background: #f8fafc; padding: 10px 16px; margin: 14px 0; color: #475569; font-size: 13.5px; line-height: 1.9; }
.prose table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 13.5px; }
.prose th, .prose td { border: 1px solid var(--line); padding: 9px 12px; text-align: left; }
.prose th { background: #f8fafc; font-weight: 700; }
.prose code { background: #f1f5f9; border-radius: 4px; padding: 1px 5px; font-size: 12.5px; }

/* 页脚 */
footer.site-foot { background: #0f172a; color: #8496aa; padding: 38px 0; font-size: 12.5px; line-height: 2; margin-top: 40px; }
footer.site-foot b { color: #cbd5e1; }
footer.site-foot a { color: #a8bcc9; text-decoration: none; }
footer.site-foot .foot-links { display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 12px; }

/* 404 */
.e404 { min-height: 60vh; display: grid; place-items: center; text-align: center; padding: 80px 24px; }
.e404 h1 { font-size: 84px; color: var(--teal); font-family: 'Noto Serif SC',serif; }
.e404 p { color: var(--sub); margin: 10px 0 24px; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 42px; }
  .hero h1 { font-size: 36px; }
  .feats { grid-template-columns: 1fr 1fr; }
  .shots { grid-template-columns: 1fr; }
  .price-grid { grid-template-columns: 1fr; }
  .row { grid-template-columns: 96px 1fr; }
  .row .tags { display: none; }
  .top nav { display: none; }
  .top nav.open { display: flex; position: absolute; top: 58px; left: 0; right: 0; background: #0f172a; flex-direction: column; padding: 14px 22px; gap: 12px; }
  .top .menu-btn { display: block; margin-left: auto; }
  .top .cta { display: none; }
  .prose { padding: 22px 18px; }
  .page-head h1 { font-size: 28px; }
}