:root {
  --ink: #18322d;
  --ink-soft: #526761;
  --line: #dce8e1;
  --line-strong: #c3d5cb;
  --paper: #ffffff;
  --canvas: #f4f8f5;
  --mint: #e9f5ec;
  --green: #2f6b4f;
  --green-dark: #20523f;
  --lime: #76b82a;
  --lime-soft: #edf6d9;
  --amber: #b76d18;
  --amber-soft: #fff4df;
  --red: #b34d43;
  --red-soft: #fff0ed;
  --blue: #2d6573;
  --blue-soft: #e9f3f5;
  --radius: 8px;
  --shadow: 0 10px 28px rgba(24, 50, 45, .07);
  font-family: Inter, "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--ink);
  background: var(--canvas);
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { min-width: 320px; scroll-behavior: smooth; }
body { margin: 0; background: var(--canvas); color: var(--ink); line-height: 1.6; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
img { max-width: 100%; display: block; }

.shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 20; padding: 10px 14px; background: var(--ink); color: #fff; border-radius: 4px; }
.skip-link:focus { top: 12px; }

.site-header { position: sticky; top: 0; z-index: 10; background: rgba(255, 255, 255, .96); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }
.nav-shell { min-height: 72px; display: flex; align-items: center; gap: 34px; }
.brand { display: inline-flex; align-items: center; gap: 10px; min-width: 178px; }
.brand img { width: 38px; height: 38px; }
.brand-copy { display: flex; flex-direction: column; line-height: 1.15; }
.brand-copy strong { font-size: 18px; letter-spacing: 0; }
.brand-copy small { margin-top: 4px; color: var(--ink-soft); font-size: 11px; }
.main-nav { display: flex; align-items: center; gap: 6px; flex: 1; }
.nav-link { padding: 9px 12px; color: var(--ink-soft); font-size: 14px; border-bottom: 2px solid transparent; }
.nav-link:hover, .nav-link.is-active { color: var(--green-dark); border-bottom-color: var(--lime); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.account-chip { display: inline-flex; align-items: center; gap: 8px; color: var(--ink-soft); font-size: 13px; }
.avatar { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--mint); color: var(--green-dark); font-weight: 700; }
.menu-toggle { display: none; }

.site-main { min-height: calc(100vh - 132px); padding: 34px 0 72px; }
.site-footer { border-top: 1px solid var(--line); background: var(--paper); }
.footer-inner { min-height: 60px; display: flex; align-items: center; justify-content: space-between; gap: 20px; color: var(--ink-soft); font-size: 12px; }
.footer-inner div { display: flex; align-items: center; gap: 12px; }
.footer-inner strong { color: var(--green-dark); }
.muted { color: var(--ink-soft); }

.page-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 26px; }
.eyebrow { margin: 0 0 8px; color: var(--green); font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 8px; font-size: clamp(27px, 4vw, 42px); line-height: 1.15; letter-spacing: 0; }
h2 { margin-bottom: 8px; font-size: 23px; line-height: 1.25; letter-spacing: 0; }
h3 { margin-bottom: 6px; font-size: 17px; line-height: 1.3; letter-spacing: 0; }
.lede { max-width: 660px; margin-bottom: 0; color: var(--ink-soft); }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin: 32px 0 14px; }
.section-heading h2 { margin: 0; font-size: 19px; }
.section-heading a { color: var(--green); font-size: 13px; font-weight: 700; }

.hero-band { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(270px, .65fr); gap: 28px; align-items: end; padding: 26px 0 28px; border-bottom: 1px solid var(--line); }
.hero-band .hero-note { padding: 18px 20px; border-left: 3px solid var(--lime); background: var(--paper); box-shadow: var(--shadow); }
.hero-note strong { display: block; margin-bottom: 5px; }
.hero-note span { color: var(--ink-soft); font-size: 13px; }
.product-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.product-card { display: flex; flex-direction: column; min-height: 258px; padding: 20px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.product-card:hover { border-color: var(--line-strong); transform: translateY(-2px); transition: transform .18s ease, border-color .18s ease; }
.product-top { display: flex; align-items: start; justify-content: space-between; gap: 12px; }
.product-mark { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 6px; background: var(--lime-soft); color: var(--green-dark); }
.product-mark svg { width: 21px; height: 21px; }
.status-dot { display: inline-flex; align-items: center; gap: 6px; color: var(--green); font-size: 12px; white-space: nowrap; }
.status-dot::before { width: 7px; height: 7px; border-radius: 50%; background: var(--lime); content: ""; }
.product-card h3 { margin-top: 18px; }
.product-card p { color: var(--ink-soft); font-size: 13px; }
.product-meta { display: flex; align-items: baseline; gap: 8px; margin-top: auto; padding-top: 18px; }
.price { color: var(--green-dark); font-size: 27px; font-weight: 800; }
.price-note { color: var(--ink-soft); font-size: 12px; }
.product-footer { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 16px; }
.stock { color: var(--ink-soft); font-size: 12px; }

.button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 40px; padding: 0 15px; border: 1px solid transparent; border-radius: 5px; font-size: 14px; font-weight: 700; line-height: 1; transition: background .18s ease, border-color .18s ease, color .18s ease; }
.button svg { width: 16px; height: 16px; }
.button-primary { background: var(--green); color: #fff; }
.button-primary:hover { background: var(--green-dark); }
.button-secondary { background: var(--mint); border-color: #cce3d2; color: var(--green-dark); }
.button-secondary:hover { background: #dceee1; }
.button-quiet { background: transparent; border-color: var(--line-strong); color: var(--ink-soft); }
.button-quiet:hover { background: var(--paper); color: var(--ink); }
.button-danger { background: var(--red-soft); border-color: #f0c9c3; color: var(--red); }
.button-small { min-height: 34px; padding: 0 11px; font-size: 12px; }
.button-wide { width: 100%; }
.icon-button { display: inline-grid; place-items: center; width: 36px; height: 36px; padding: 0; border: 1px solid transparent; border-radius: 5px; background: transparent; color: var(--ink-soft); }
.icon-button:hover { background: var(--mint); color: var(--green-dark); }
.icon-button svg { width: 17px; height: 17px; }

.flash-stack { display: grid; gap: 8px; margin-bottom: 20px; }
.flash { display: flex; align-items: center; gap: 10px; min-height: 44px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 5px; background: var(--paper); font-size: 13px; }
.flash svg { width: 17px; height: 17px; flex: 0 0 auto; }
.flash-close { margin-left: auto; width: 28px; height: 28px; }
.flash-success { border-color: #bfe0c7; background: var(--mint); color: var(--green-dark); }
.flash-error { border-color: #efc3bd; background: var(--red-soft); color: var(--red); }
.flash-warning { border-color: #efd7a9; background: var(--amber-soft); color: #805013; }

.surface { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.surface-pad { padding: 22px; }
.split-layout { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(280px, .6fr); gap: 18px; align-items: start; }
.two-column { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.three-column { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.stat-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.stat { padding: 16px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); }
.stat-label { color: var(--ink-soft); font-size: 12px; }
.stat-value { display: block; margin-top: 8px; font-size: 26px; font-weight: 800; line-height: 1; }
.stat-accent { border-top: 3px solid var(--lime); }
.stat-amber { border-top: 3px solid #e5ae4a; }
.stat-blue { border-top: 3px solid #5b9da7; }
.stat-red { border-top: 3px solid #cf756b; }

.form-shell { width: min(520px, 100%); margin: 26px auto 0; }
.form-shell.wide { width: min(760px, 100%); }
.form-header { margin-bottom: 22px; }
.form-header h1 { font-size: 30px; }
.form-header p { margin-bottom: 0; color: var(--ink-soft); }
.form-stack { display: grid; gap: 16px; }
.field { display: grid; gap: 7px; }
.field label { color: var(--ink); font-size: 13px; font-weight: 700; }
.field label span { margin-left: 3px; color: var(--red); }
.field input, .field select, .field textarea { width: 100%; min-height: 44px; padding: 9px 12px; border: 1px solid var(--line-strong); border-radius: 5px; background: #fff; color: var(--ink); outline: none; }
.field textarea { min-height: 110px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(47, 107, 79, .12); }
.field-help { margin: 0; color: var(--ink-soft); font-size: 12px; }
.field-error { margin: 0; color: var(--red); font-size: 12px; }
.has-error input, .has-error select, .has-error textarea { border-color: #d9867d; }
.form-actions { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 6px; }
.form-note { margin: 18px 0 0; color: var(--ink-soft); font-size: 12px; text-align: center; }
.form-note a { color: var(--green); font-weight: 700; }
.captcha-row { display: grid; grid-template-columns: 1fr 132px; gap: 10px; align-items: end; }
.captcha-image { width: 132px; height: 42px; border: 1px solid var(--line); border-radius: 5px; object-fit: cover; }
.inline-form { display: flex; align-items: end; gap: 10px; flex-wrap: wrap; }
.inline-form .field { flex: 1 1 220px; }

.auth-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(340px, .8fr); min-height: 480px; margin: 20px auto 0; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); box-shadow: var(--shadow); }
.auth-aside { display: flex; flex-direction: column; justify-content: space-between; padding: 34px; background: var(--ink); color: #fff; }
.auth-aside h1 { max-width: 360px; color: #fff; font-size: 35px; }
.auth-aside p { max-width: 340px; color: #c3d8cc; }
.auth-aside .brand-mark-large { width: 66px; height: 66px; padding: 11px; border-radius: 10px; background: #eaf5df; }
.auth-aside-list { display: grid; gap: 11px; margin: 28px 0 0; padding: 0; list-style: none; color: #dbeae0; font-size: 13px; }
.auth-aside-list li { display: flex; gap: 9px; align-items: center; }
.auth-aside-list svg { width: 16px; color: #b7d83e; }
.auth-form { padding: 34px; }
.tab-row { display: flex; gap: 4px; margin-bottom: 22px; padding-bottom: 4px; border-bottom: 1px solid var(--line); }
.tab-button { padding: 9px 12px; border: 0; border-bottom: 2px solid transparent; background: transparent; color: var(--ink-soft); font-size: 13px; font-weight: 700; }
.tab-button.is-active { border-bottom-color: var(--lime); color: var(--green-dark); }
.tab-panel[hidden] { display: none; }

.dashboard-header { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-bottom: 22px; }
.dashboard-header h1 { margin-bottom: 4px; font-size: 28px; }
.dashboard-header p { margin-bottom: 0; color: var(--ink-soft); font-size: 13px; }
.side-nav { display: grid; gap: 3px; padding: 8px; }
.side-nav a { display: flex; align-items: center; gap: 9px; padding: 10px; border-radius: 5px; color: var(--ink-soft); font-size: 13px; }
.side-nav a:hover, .side-nav a.is-active { background: var(--mint); color: var(--green-dark); font-weight: 700; }
.side-nav svg { width: 16px; }
.dashboard-layout { display: grid; grid-template-columns: 205px minmax(0, 1fr); gap: 18px; align-items: start; }
.dashboard-main { min-width: 0; }
.data-list { display: grid; gap: 1px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--line); }
.data-row { display: grid; grid-template-columns: minmax(120px, 1.2fr) minmax(90px, .8fr) minmax(100px, .8fr) auto; gap: 14px; align-items: center; min-height: 58px; padding: 11px 14px; background: var(--paper); font-size: 13px; }
.data-row.header { min-height: 38px; background: var(--canvas); color: var(--ink-soft); font-size: 11px; font-weight: 700; text-transform: uppercase; }
.data-row strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.data-row .meta { color: var(--ink-soft); font-size: 12px; }
.data-row .end { justify-self: end; }
.tag { display: inline-flex; align-items: center; min-height: 24px; padding: 0 8px; border-radius: 4px; background: var(--mint); color: var(--green-dark); font-size: 11px; font-weight: 700; }
.tag-amber { background: var(--amber-soft); color: var(--amber); }
.tag-red { background: var(--red-soft); color: var(--red); }
.tag-blue { background: var(--blue-soft); color: var(--blue); }
.key-value { display: flex; align-items: center; gap: 8px; min-width: 0; }
.key-value code { overflow: hidden; color: var(--ink); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }

.action-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.action-panel { padding: 20px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.action-panel h2 { display: flex; align-items: center; gap: 9px; font-size: 18px; }
.action-panel h2 svg { width: 18px; color: var(--green); }
.action-panel > p { color: var(--ink-soft); font-size: 12px; }
.check-list { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.check-list label { display: flex; align-items: center; gap: 8px; min-height: 36px; padding: 0 9px; border: 1px solid var(--line); border-radius: 4px; font-size: 13px; }
.check-list input { accent-color: var(--green); }
.result-panel { margin-top: 16px; padding: 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); }
.result-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.result-item { padding: 12px; background: var(--canvas); border-radius: 5px; }
.result-item small { display: block; color: var(--ink-soft); font-size: 11px; }
.result-item strong { display: block; margin-top: 5px; font-size: 14px; }

.query-layout { display: grid; grid-template-columns: minmax(0, .75fr) minmax(0, 1.25fr); gap: 18px; align-items: start; }
.query-result { min-height: 190px; }
.auth-status { display: flex; align-items: center; gap: 8px; }
.auth-status.is-valid { color: var(--green); }
.auth-status.is-empty { color: var(--ink-soft); }
.auth-status svg { width: 16px; }

.checkout-summary { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 18px; align-items: start; }
.checkout-card { padding: 22px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); box-shadow: var(--shadow); }
.checkout-card dl { display: grid; grid-template-columns: 1fr auto; gap: 12px; margin: 0; font-size: 13px; }
.checkout-card dt { color: var(--ink-soft); }
.checkout-card dd { margin: 0; font-weight: 700; text-align: right; }
.order-number { padding: 12px; border: 1px dashed var(--line-strong); background: var(--canvas); font-family: ui-monospace, monospace; font-size: 12px; }

.admin-title { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 22px; }
.admin-title h1 { margin-bottom: 4px; font-size: 28px; }
.admin-title p { margin-bottom: 0; color: var(--ink-soft); font-size: 13px; }
.admin-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin-bottom: 22px; }
.admin-panels { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(280px, .6fr); gap: 18px; align-items: start; }
.admin-panel { padding: 20px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); box-shadow: var(--shadow); }
.admin-panel h2 { font-size: 18px; }
.admin-links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.admin-link { display: flex; align-items: center; gap: 9px; padding: 12px; border: 1px solid var(--line); border-radius: 5px; color: var(--ink-soft); font-size: 13px; }
.admin-link:hover { border-color: var(--line-strong); background: var(--mint); color: var(--green-dark); }
.admin-link svg { width: 17px; color: var(--green); }

.empty-state { display: grid; justify-items: center; gap: 8px; min-height: 180px; padding: 28px 18px; border: 1px dashed var(--line-strong); border-radius: var(--radius); background: var(--paper); text-align: center; }
.empty-icon { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 50%; background: var(--mint); color: var(--green); }
.empty-icon svg { width: 20px; }
.empty-state p { max-width: 360px; margin: 0; color: var(--ink-soft); font-size: 13px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

@media (max-width: 960px) {
  .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-band, .auth-layout, .checkout-summary, .query-layout, .admin-panels { grid-template-columns: 1fr; }
  .auth-aside { min-height: 250px; }
  .stat-grid, .admin-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
  .shell { width: min(100% - 28px, 1180px); }
  .site-main { padding-top: 24px; }
  .nav-shell { min-height: 64px; gap: 14px; }
  .main-nav { display: none; position: absolute; left: 14px; right: 14px; top: 64px; flex-direction: column; align-items: stretch; gap: 0; padding: 8px; border: 1px solid var(--line); border-radius: 5px; background: var(--paper); box-shadow: var(--shadow); }
  .main-nav.is-open { display: flex; }
  .nav-link { border-bottom: 0; }
  .menu-toggle { display: inline-grid; margin-left: auto; }
  .nav-actions { margin-left: auto; }
  .nav-actions .account-chip span:last-child { display: none; }
  .brand { min-width: auto; }
  .page-heading, .dashboard-header, .admin-title { align-items: start; flex-direction: column; }
  .product-grid, .two-column, .three-column, .action-grid { grid-template-columns: 1fr; }
  .stat-grid, .admin-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .dashboard-layout { grid-template-columns: 1fr; }
  .side-nav { grid-template-columns: repeat(4, minmax(0, 1fr)); overflow-x: auto; }
  .side-nav a { justify-content: center; padding: 9px 5px; font-size: 11px; text-align: center; }
  .side-nav a span { display: none; }
  .data-row { grid-template-columns: minmax(100px, 1fr) auto; gap: 7px; }
  .data-row.header { display: none; }
  .data-row > :nth-child(2), .data-row > :nth-child(3) { grid-column: 1; }
  .data-row > :last-child { grid-column: 2; grid-row: 1 / span 2; }
  .auth-form, .auth-aside, .surface-pad { padding: 20px; }
  .auth-aside h1 { font-size: 29px; }
  .result-grid { grid-template-columns: 1fr; }
  .footer-inner { align-items: start; flex-direction: column; justify-content: center; padding: 13px 0; }
}

@media (max-width: 460px) {
  .nav-actions .button-small { padding: 0 8px; }
  .brand-copy small { display: none; }
  h1 { font-size: 28px; }
  .stat-grid, .admin-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
  .stat { padding: 12px; }
  .stat-value { font-size: 21px; }
  .captcha-row { grid-template-columns: 1fr; }
}