/* ==========================================================================
   灵梦墨 API · 设计系统与着陆页样式
   设计 Token 见 :root —— 金色为品牌与 CTA，青绿为成功/在线，红色仅用于错误。
   ========================================================================== */

:root {
  /* 品牌色 */
  --brand-primary: #D7B979;
  --brand-primary-ink: #1A1206;
  --brand-secondary: #2DD4BF;

  /* 状态色 */
  --success: #35C48D;
  --warning: #F4B740;
  --danger: #EF6A6A;

  /* 主题（深色为默认） */
  --brand-bg: #060A12;
  --bg: var(--brand-bg);
  --bg-2: #0A1120;
  --surface: rgba(255, 255, 255, 0.045);
  --surface-hover: rgba(255, 255, 255, 0.08);
  --line: rgba(255, 255, 255, 0.10);
  --line-strong: rgba(255, 255, 255, 0.18);
  --text-primary: #F0F3F8;
  --text-secondary: #9AA4B8;
  --text-tertiary: #7C8698;
  --code-bg: #080D17;
  --code-text: #D8E5DC;
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.45);

  /* 尺寸与节奏 */
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
  --container: 1180px;
  --tap: 44px;

  --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Cascadia Code', Consolas, 'Courier New', monospace;
}

html[data-theme="light"] {
  --bg: #F7F8FA;
  --bg-2: #EDF0F5;
  --surface: #FFFFFF;
  --surface-hover: #FFFFFF;
  --line: rgba(20, 30, 60, 0.10);
  --line-strong: rgba(20, 30, 60, 0.18);
  --text-primary: #141A2C;
  --text-secondary: #55607A;
  --text-tertiary: #6B768E;
  --brand-primary: #8A6A1F;
  --brand-primary-ink: #FFFFFF;
  --brand-secondary: #0E7C6B;
  --code-bg: #101A24;
  --code-text: #DCE7E1;
  --shadow: 0 14px 40px rgba(20, 40, 80, 0.10);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background .35s ease, color .35s ease;
}

a { color: var(--brand-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; display: block; }

:focus-visible {
  outline: 2px solid var(--brand-secondary);
  outline-offset: 2px;
  border-radius: 4px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  clip: rect(0 0 0 0); clip-path: inset(50%);
  overflow: hidden; white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: 16px; top: -60px;
  z-index: 200;
  background: var(--brand-primary);
  color: var(--brand-primary-ink);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: top .2s ease;
}
.skip-link:focus { top: 12px; text-decoration: none; }

#particles {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: .45;
}

main, header, footer { position: relative; z-index: 1; }

/* ==========================================================================
   导航
   ========================================================================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.nav.scrolled {
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.16);
}
.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--text-primary); }
.brand:hover { text-decoration: none; }
.brand-logo { width: 32px; height: 32px; border-radius: 9px; }
.brand-name { font-size: 17px; font-weight: 700; letter-spacing: .4px; }
.brand-name em { font-style: normal; color: var(--brand-primary); }

.nav-menu { display: flex; align-items: center; gap: 2px; }
.nav-menu > a {
  color: var(--text-secondary);
  font-size: 14px;
  padding: 10px 14px;
  border-radius: 10px;
  transition: color .2s, background .2s;
}
.nav-menu > a:hover { color: var(--text-primary); background: var(--surface-hover); text-decoration: none; }
.nav-menu > a.nav-cta {
  color: var(--brand-primary-ink);
  background: var(--brand-primary);
  font-weight: 600;
  margin-left: 8px;
}
.nav-menu > a.nav-cta:hover { filter: brightness(1.06); color: var(--brand-primary-ink); }

.theme-switch {
  display: flex;
  gap: 2px;
  margin-left: 10px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
}
.theme-switch button {
  width: 32px; height: 26px;
  min-width: 32px;
  border: 0; border-radius: 999px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: background .2s, color .2s;
}
.theme-switch button.active { background: var(--surface-hover); color: var(--brand-primary); }

.nav-toggle {
  display: none;
  width: var(--tap); height: var(--tap);
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  cursor: pointer;
  padding: 12px 11px;
  flex-direction: column;
  justify-content: space-between;
}
.nav-toggle span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--text-primary);
  transition: transform .25s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   通用区块
   ========================================================================== */
.section {
  max-width: var(--container);
  margin: 0 auto;
  padding: 88px 24px;
}
.section-tag {
  font-size: 11.5px;
  letter-spacing: 2.4px;
  color: var(--brand-primary);
  text-align: center;
  font-weight: 600;
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(22px, 3.2vw, 32px);
  font-weight: 700;
  text-align: center;
  line-height: 1.35;
  letter-spacing: -.2px;
}
.section-lead {
  text-align: center;
  color: var(--text-secondary);
  font-size: 15px;
  max-width: 720px;
  margin: 14px auto 0;
}
.section-lead a { text-decoration: underline; }

code.inline {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--surface-hover);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1px 6px;
  color: var(--brand-primary);
  word-break: break-all;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: var(--tap);
  padding: 10px 24px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s, color .2s, border-color .2s;
}
.btn:hover { text-decoration: none; }
.btn:disabled { opacity: .55; cursor: not-allowed; transform: none; }
.btn-primary {
  background: var(--brand-primary);
  color: var(--brand-primary-ink);
  box-shadow: 0 8px 22px rgba(215, 185, 121, 0.18);
}
.btn-primary:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 12px 28px rgba(215, 185, 121, 0.26); }
.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--line-strong);
}
.btn-ghost:hover:not(:disabled) { border-color: var(--brand-primary); color: var(--brand-primary); }
.btn-sm { min-height: 36px; padding: 7px 16px; font-size: 13.5px; border-radius: 10px; }
.btn-lg { min-height: 52px; padding: 14px 38px; font-size: 16px; }

/* ==========================================================================
   HERO
   ========================================================================== */
.hero {
  min-height: 92svh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 132px 24px 72px;
  background:
    radial-gradient(ellipse 58% 42% at 50% -6%, rgba(215, 185, 121, 0.13), transparent 70%),
    radial-gradient(ellipse 42% 32% at 88% 106%, rgba(45, 212, 191, 0.09), transparent 70%);
}
.hero-inner { max-width: 860px; width: 100%; }
.hero-badge {
  display: inline-block;
  font-size: 11.5px;
  letter-spacing: 2.2px;
  color: var(--text-secondary);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 16px;
  margin-bottom: 20px;
  background: var(--surface);
}
.hero-title {
  font-size: clamp(34px, 6.2vw, 60px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -.5px;
}
.hero-title .grad {
  background: linear-gradient(120deg, var(--brand-primary), var(--brand-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  margin: 20px auto 0;
  max-width: 640px;
  font-size: clamp(15px, 2vw, 17.5px);
  color: var(--text-secondary);
}

.baseurl {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 30px;
  padding: 8px 10px 8px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: var(--surface);
  max-width: 100%;
}
.baseurl-label {
  font-size: 11.5px;
  letter-spacing: 1.4px;
  color: var(--text-tertiary);
  text-transform: uppercase;
}
.baseurl-value {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-primary);
  word-break: break-all;
}
.baseurl-copy {
  min-height: 32px;
  padding: 5px 14px;
  font-size: 13px;
  font-family: inherit;
  font-weight: 600;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  background: transparent;
  color: var(--brand-primary);
  cursor: pointer;
  transition: background .2s, border-color .2s, color .2s;
}
.baseurl-copy:hover { background: var(--surface-hover); border-color: var(--brand-primary); }
.baseurl-copy.copied { color: var(--success); border-color: var(--success); }
.baseurl-hint {
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--text-tertiary);
}
.hero-cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 28px;
}
.hero-meta {
  margin-top: 24px;
  font-size: 13px;
  color: var(--text-tertiary);
  letter-spacing: .3px;
}

/* ==========================================================================
   服务状态（三态）
   ========================================================================== */
.status-strip {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px 8px;
}
.status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  padding: 18px;
}
.status-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius);
  min-width: 0;
}
.status-dot {
  flex: 0 0 9px;
  width: 9px; height: 9px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--text-tertiary);
}
.status-item[data-state="ok"] .status-dot { background: var(--success); box-shadow: 0 0 0 3px rgba(53, 196, 141, 0.16); }
.status-item[data-state="warn"] .status-dot { background: var(--warning); box-shadow: 0 0 0 3px rgba(244, 183, 64, 0.16); }
.status-item[data-state="error"] .status-dot { background: var(--danger); box-shadow: 0 0 0 3px rgba(239, 106, 106, 0.16); }
.status-item[data-state="loading"] .status-dot { background: var(--text-tertiary); animation: pulse 1.4s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: .35; } 50% { opacity: 1; } }

.status-body { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.status-label { font-size: 12.5px; color: var(--text-tertiary); letter-spacing: .3px; }
.status-value {
  font-size: 15px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text-primary);
  word-break: break-word;
}
.status-item[data-state="ok"] .status-value { color: var(--success); }
.status-item[data-state="warn"] .status-value { color: var(--warning); }
.status-item[data-state="error"] .status-value { color: var(--danger); }
.status-item[data-state="unknown"] .status-value,
.status-item[data-state="loading"] .status-value { color: var(--text-secondary); font-weight: 600; }

.status-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 12px 6px 0;
  font-size: 12.5px;
  color: var(--text-tertiary);
}
.status-link { color: var(--brand-primary); }

/* ==========================================================================
   三步接入
   ========================================================================== */
.step-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 40px;
}
.step-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color .25s ease, transform .25s ease;
}
.step-card:hover { border-color: var(--brand-primary); transform: translateY(-3px); }
.step-num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--brand-primary);
}
.step-card h3 { font-size: 17px; font-weight: 700; }
.step-card p { font-size: 13.5px; color: var(--text-secondary); flex: 1; }
.step-card .btn { align-self: flex-start; }

/* ==========================================================================
   模型目录
   ========================================================================== */
.catalog-toolbar {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr auto;
  gap: 12px;
  align-items: end;
  margin-top: 32px;
}
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field > span { font-size: 12px; color: var(--text-tertiary); letter-spacing: .3px; }
.field input,
.field select {
  min-height: var(--tap);
  padding: 9px 12px;
  font-family: inherit;
  font-size: 14px;
  color: var(--text-primary);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  width: 100%;
}
.field input::placeholder { color: var(--text-tertiary); }
.field select option { background: var(--bg-2); color: var(--text-primary); }

.table-wrap {
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  overflow-x: auto;
}
.catalog-table { width: 100%; border-collapse: collapse; font-size: 13.5px; min-width: 720px; }
.catalog-table th {
  text-align: left;
  padding: 12px 16px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .4px;
  color: var(--text-tertiary);
  background: var(--surface-hover);
  white-space: nowrap;
}
.catalog-table th.num, .catalog-table td.num { text-align: right; font-variant-numeric: tabular-nums; }
.catalog-table td {
  padding: 11px 16px;
  border-top: 1px solid var(--line);
  color: var(--text-secondary);
  vertical-align: middle;
}
.catalog-table tbody tr:hover td { background: var(--surface-hover); }
.model-name { font-family: var(--font-mono); font-size: 13px; color: var(--text-primary); word-break: break-all; }
.model-vendor { color: var(--text-secondary); white-space: nowrap; }
.model-price { color: var(--text-primary); font-variant-numeric: tabular-nums; }

.badge-state {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 999px;
  white-space: nowrap;
}
.badge-state::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
}
.badge-state[data-state="ok"] { color: var(--success); background: rgba(53, 196, 141, 0.12); }
.badge-state[data-state="warn"] { color: var(--warning); background: rgba(244, 183, 64, 0.12); }
.badge-state[data-state="off"] { color: var(--text-tertiary); background: var(--surface-hover); }

.cap-tags { display: flex; gap: 5px; flex-wrap: wrap; }
.cap-tag {
  font-size: 11.5px;
  color: var(--text-secondary);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1px 7px;
  white-space: nowrap;
}
.catalog-state td {
  text-align: center;
  padding: 34px 16px;
  color: var(--text-secondary);
}
.catalog-state[data-state="error"] td { color: var(--danger); }
.catalog-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
  font-size: 13px;
  color: var(--text-secondary);
}
.catalog-note {
  margin-top: 12px;
  font-size: 12.5px;
  color: var(--text-tertiary);
  line-height: 1.7;
}

/* ==========================================================================
   开发者能力 / 安全
   ========================================================================== */
.cap-grid, .sec-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin-top: 40px;
}
.cap-card, .sec-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 20px;
  transition: border-color .25s ease, transform .25s ease;
}
.cap-card:hover, .sec-item:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.cap-card h3, .sec-item h3 { font-size: 15.5px; font-weight: 700; margin-bottom: 8px; }
.cap-card p, .sec-item p { font-size: 13.5px; color: var(--text-secondary); line-height: 1.7; }
.sec-warn {
  margin-top: 18px;
  padding: 14px 18px;
  border: 1px solid rgba(239, 106, 106, 0.4);
  background: rgba(239, 106, 106, 0.08);
  border-radius: var(--radius);
  font-size: 13.5px;
  color: var(--text-primary);
}

/* ==========================================================================
   代码块（可复制，语言标签不入代码文本）
   ========================================================================== */
.pg-wrap { margin-top: 32px; }
.pg-controls {
  display: flex;
  gap: 12px;
  align-items: end;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.pg-controls .field { min-width: 220px; }

.code-block {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--code-bg);
}
.code-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  flex-wrap: wrap;
}
.code-tabs { display: flex; gap: 4px; }
.code-tabs button {
  min-height: 32px;
  padding: 5px 14px;
  font-family: inherit;
  font-size: 12.5px;
  font-weight: 600;
  color: #9AA4B8;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  transition: color .2s, background .2s;
}
.code-tabs button:hover { color: #F0F3F8; }
.code-tabs button[aria-selected="true"] {
  color: #1A1206;
  background: var(--brand-primary);
}
.code-tag {
  font-size: 11.5px;
  letter-spacing: .6px;
  color: #8A94A8;
}
.code-block pre {
  margin: 0;
  padding: 16px 18px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.75;
  color: var(--code-text);
  tab-size: 2;
}
.code-block pre code { font-family: inherit; white-space: pre; }
.pg-status {
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--text-secondary);
  min-height: 18px;
}
.pg-status[data-state="ok"] { color: var(--success); }
.pg-status[data-state="error"] { color: var(--danger); }

.error-demo { margin-top: 20px; }
.error-demo summary {
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  padding: 10px 0;
  list-style: none;
}
.error-demo summary::-webkit-details-marker { display: none; }
.error-demo summary::before { content: "▸ "; color: var(--brand-primary); }
.error-demo[open] summary::before { content: "▾ "; }
.error-demo-note { margin-top: 10px; font-size: 13px; color: var(--text-secondary); }

/* ==========================================================================
   计费 / FAQ / 支持
   ========================================================================== */
.bill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
  margin-top: 40px;
}
.bill-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 20px;
}
.bill-card h3 { font-size: 15.5px; margin-bottom: 8px; }
.bill-card p { font-size: 13.5px; color: var(--text-secondary); }
.bill-note {
  margin-top: 18px;
  padding: 14px 18px;
  border: 1px solid rgba(244, 183, 64, 0.35);
  background: rgba(244, 183, 64, 0.08);
  border-radius: var(--radius);
  font-size: 13.5px;
  color: var(--text-primary);
}

.faq-list { margin-top: 34px; display: grid; gap: 10px; }
.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 4px 18px;
}
.faq-item summary {
  cursor: pointer;
  font-size: 14.5px;
  font-weight: 600;
  padding: 13px 0;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; float: right; color: var(--brand-primary); font-weight: 700; }
.faq-item[open] summary::after { content: "−"; }
.faq-item p { font-size: 13.5px; color: var(--text-secondary); padding: 0 0 14px; }

.support-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin-top: 36px;
}
.support-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 20px;
  color: var(--text-primary);
  transition: border-color .25s ease, transform .25s ease;
}
.support-card:hover { border-color: var(--brand-primary); transform: translateY(-2px); text-decoration: none; }
.support-card h3 { font-size: 15.5px; margin-bottom: 6px; }
.support-card p { font-size: 13.5px; color: var(--text-secondary); margin-bottom: 10px; }
.support-mail { font-family: var(--font-mono); font-size: 13px; color: var(--brand-primary); }
.support-note {
  margin-top: 16px;
  font-size: 12.5px;
  color: var(--text-tertiary);
}

.final-cta {
  text-align: center;
  padding: 76px 24px;
  margin-top: 20px;
  border-top: 1px solid var(--line);
  background:
    radial-gradient(ellipse 60% 100% at 50% 100%, rgba(215, 185, 121, 0.10), transparent 70%);
}
.final-cta h2 { font-size: clamp(22px, 3vw, 30px); font-weight: 700; }
.final-cta p { margin: 12px auto 24px; color: var(--text-secondary); font-size: 14.5px; max-width: 520px; }

/* ==========================================================================
   页脚
   ========================================================================== */
.footer {
  border-top: 1px solid var(--line);
  padding: 34px 24px 26px;
  background: var(--bg-2);
}
.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-brand { display: flex; align-items: center; gap: 9px; font-weight: 700; font-size: 15px; }
.footer-brand img { border-radius: 7px; }
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; }
.footer-links a { font-size: 13px; color: var(--text-secondary); }
.footer-links a:hover { color: var(--brand-primary); }
.footer-sub {
  max-width: var(--container);
  margin: 18px auto 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: var(--text-tertiary);
}
.footer-sub a { color: var(--text-tertiary); }
.footer-sub a:hover { color: var(--brand-primary); }
/* 备案信息公示：企业主体、统一社会信用代码、ICP 备案号均须可见可点 */
.footer-disclosure,
.footer-filing {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  align-items: center;
}
.footer-disclosure { flex: 1 1 520px; }
.footer-filing { justify-content: flex-end; }
.footer-disclosure strong { color: var(--text-secondary); font-weight: 600; }
.footer-filing a[href*="beian.miit.gov.cn"] {
  color: var(--text-secondary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ==========================================================================
   入场动效（可被 reduced-motion 关闭）
   ========================================================================== */
.reveal { opacity: 0; transform: translateY(18px); }
.reveal.is-visible {
  opacity: 1;
  transform: none;
  transition: opacity .6s ease, transform .6s ease;
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 960px) {
  .catalog-toolbar { grid-template-columns: 1fr 1fr; }
  .catalog-toolbar .btn { grid-column: span 2; justify-self: start; }
}

@media (max-width: 820px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 16px; right: 16px;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: color-mix(in srgb, var(--bg) 96%, transparent);
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow);
    display: none;
  }
  .nav-menu.open { display: flex; }
  .nav-menu > a { padding: 12px 14px; min-height: var(--tap); display: flex; align-items: center; }
  .nav-menu > a.nav-cta { margin: 6px 0 0; justify-content: center; }
  .theme-switch { margin: 8px 0 2px; align-self: flex-start; }
  .theme-switch button { width: var(--tap); height: 34px; }

  .section { padding: 64px 20px; }
  .hero { padding: 108px 20px 56px; min-height: auto; }
  .status-grid { grid-template-columns: 1fr 1fr; padding: 14px; }
  .catalog-toolbar { grid-template-columns: 1fr; }
  .catalog-toolbar .btn { grid-column: span 1; justify-self: stretch; }
  .pg-controls .field { min-width: 100%; }
  .footer-inner, .footer-sub { flex-direction: column; align-items: flex-start; }
  .footer-disclosure, .footer-filing { flex-direction: column; align-items: flex-start; justify-content: flex-start; }
}

@media (max-width: 480px) {
  .status-grid { grid-template-columns: 1fr; }
  .baseurl { flex-direction: column; align-items: stretch; text-align: center; padding: 12px; }
  .baseurl-copy { width: 100%; }
  .hero-cta .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  #particles { display: none; }
}