/* ==========================================================================
   UGS-NEXT Design System v2.0 — LinPick 麟选
   "暗色优先金融终端风 × 清代户部账本"
   所有页面共享此 CSS。不依赖 Tailwind 也能独立使用组件类。
   ========================================================================== */

/* === 字体 CDN === */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;500;700;900&family=Noto+Sans+SC:wght@300;400;500;700&family=IBM+Plex+Mono:wght@300;400;500;600;700&display=swap');

/* === :root 品牌变量 (暗色默认) === */
:root {
  /* 麒麟品牌色 */
  --qilin-red: #C8102E;
  --qilin-red-deep: #8B0000;
  --qilin-red-soft: #E63946;
  --qilin-red-glow: rgba(200, 16, 46, 0.35);

  --qilin-gold: #D4AF37;
  --qilin-gold-bright: #F0C75E;
  --qilin-gold-dim: #9A7B27;
  --qilin-gold-glow: rgba(212, 175, 55, 0.25);

  /* 墨色系 */
  --ink-black: #0a0e1a;
  --ink-graphite: #111827;
  --ink-charcoal: #1f2937;
  --ink-card: #131722;
  --ink-card-hover: #1a2030;
  --ink-stone: #4b5563;
  --ink-mist: #9ca3af;
  --ink-mist-light: #d1d5db;

  /* 宣纸白 (浅色模式用) */
  --paper: #F9F6F0;
  --paper-deep: #EDE8DF;
  --paper-shadow: #D9D3C7;
  --paper-light: #FFFFFF;

  /* 涨跌语义色 */
  --up: #ef4444;        /* A股红涨 */
  --up-soft: rgba(239, 68, 68, 0.15);
  --down: #22c55e;      /* A股绿跌 */
  --down-soft: rgba(34, 197, 94, 0.15);
  --neutral: #9ca3af;

  /* 边框与分割线 */
  --border: rgba(212, 175, 55, 0.15);
  --border-strong: rgba(212, 175, 55, 0.35);
  --border-divider: rgba(148, 163, 184, 0.12);
  --text-dim: #6b7280;

  /* 间距体系 */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;
  --sp-7: 48px;
  --sp-8: 64px;

  /* 圆角 */
  --r-sm: 2px;
  --r-md: 4px;
  --r-lg: 8px;
  --r-xl: 12px;

  /* 阴影 */
  --sh-1: 0 1px 2px rgba(0,0,0,0.3);
  --sh-2: 0 4px 12px rgba(0,0,0,0.4);
  --sh-3: 0 12px 32px rgba(0,0,0,0.5);
  --sh-gold: 0 0 20px rgba(212, 175, 55, 0.15);

  /* 容器 */
  --container: 1320px;
  --container-narrow: 1100px;

  /* 字体栈 */
  --font-serif: "Noto Serif SC", "Songti SC", "STSong", serif;
  --font-sans: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "IBM Plex Mono", "SF Mono", "Consolas", monospace;
  --font-display: "ZCOOL XiaoWei", "Noto Serif SC", serif;  /* 仅用于 hero h1 */

  /* 动效 3 阶 (2026-06-19 统一) */
  --t-fast: .15s;   /* 微交互: button press, tooltip */
  --t-med:  .2s;    /* hover: card, nav link */
  --t-slow: .3s;    /* 面板切换: modal, dropdown, theme */

  /* 圆角 6 阶 (扩展) */
  --r-2xl: 16px;    /* 大卡片/弹窗 */
  --r-3xl: 24px;    /* Hero 面板 */

  /* 响应式断点 (CSS 变量声明, 用于 JS 监听) */
  --bp-4k: 1440px;
  --bp-xl: 1200px;
  --bp-lg: 900px;
  --bp-md: 600px;
}

/* === 全局主题过渡 (避免 all 副作用) === */
html {
  transition: background-color var(--t-slow),
              color var(--t-slow),
              border-color var(--t-slow);
}

/* === 浅色模式覆盖 === */
html.light {
  --ink-black: #F9F6F0;
  --ink-graphite: #FFFFFF;
  --ink-charcoal: #F3F0EA;
  --ink-card: #FFFFFF;
  --ink-card-hover: #F9F6F0;
  --ink-stone: #6b7280;
  --ink-mist: #9ca3af;
  --ink-mist-light: #d1d5db;
  --border: rgba(212, 175, 55, 0.25);
  --border-strong: rgba(212, 175, 55, 0.45);
  --border-divider: rgba(148, 163, 184, 0.2);
  --text-dim: #6b7280;
  --sh-1: 0 1px 2px rgba(0,0,0,0.08);
  --sh-2: 0 4px 12px rgba(0,0,0,0.1);
  --sh-3: 0 12px 32px rgba(0,0,0,0.12);
  --sh-gold: 0 0 20px rgba(212, 175, 55, 0.08);
}

/* === Reset & Base === */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--ink-black);
  color: var(--ink-mist-light);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* 暗色背景微噪点纹理 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
}

/* === 滚动条美化 === */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--ink-black);
}
::-webkit-scrollbar-thumb {
  background: var(--ink-stone);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--qilin-gold-dim);
}

/* === 容器 === */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--sp-5);
}
.container-narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 var(--sp-5);
}

/* ==========================================================================
   组件类 — 纯 CSS，不依赖 Tailwind
   ========================================================================== */

/* ── 卡片 ── */
.qilin-card {
  background: var(--ink-card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: var(--sp-5);
  position: relative;
  transition: all var(--t-slow) ease;
}
.qilin-card:hover {
  border-color: var(--border-strong);
  background: var(--ink-card-hover);
  box-shadow: var(--sh-2);
}
.qilin-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--qilin-gold-glow), transparent);
}

/* ── 表格 ── */
.qilin-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-family: var(--font-sans);
  font-size: 13px;
  background: var(--ink-card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
}
.qilin-table thead th {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--qilin-gold);
  background: var(--ink-graphite);
  padding: var(--sp-3) var(--sp-4);
  text-align: left;
  border-bottom: 1px solid var(--border-strong);
  position: sticky;
  top: 0;
  z-index: 10;
}
.qilin-table tbody td {
  padding: var(--sp-3) var(--sp-4);
  border-bottom: 1px solid var(--border-divider);
  color: var(--ink-mist-light);
  font-family: var(--font-mono);
  font-size: 12px;
}
.qilin-table tbody tr:hover td {
  background: var(--up-soft);
}
.qilin-table tbody tr:last-child td {
  border-bottom: none;
}

/* ── 按钮 ── */
.qilin-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.04em;
  padding: 8px 18px;
  border-radius: var(--r-sm);
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--ink-charcoal);
  color: var(--ink-mist-light);
  transition: all var(--t-med) ease;
  text-decoration: none;
}
.qilin-btn:hover {
  background: var(--ink-stone);
  border-color: var(--qilin-gold);
  color: var(--qilin-gold-bright);
}
.qilin-btn-gold {
  background: linear-gradient(135deg, var(--qilin-gold) 0%, var(--qilin-gold-dim) 100%);
  color: var(--ink-black);
  border-color: var(--qilin-gold-bright);
  font-weight: 700;
}
.qilin-btn-gold:hover {
  background: linear-gradient(135deg, var(--qilin-gold-bright) 0%, var(--qilin-gold) 100%);
  box-shadow: var(--sh-gold);
  transform: translateY(-1px);
}

/* ── 徽章 ── */
.qilin-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: var(--r-sm);
  background: var(--ink-charcoal);
  color: var(--ink-mist);
  border: 1px solid var(--border);
}
.qilin-badge-pro {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(59, 130, 246, 0.1));
  color: #60a5fa;
  border-color: rgba(59, 130, 246, 0.4);
}
.qilin-badge-vip {
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.2), rgba(212, 175, 55, 0.1));
  color: var(--qilin-gold-bright);
  border-color: var(--qilin-gold);
}

/* ── 标签页 ── */
.qilin-tabs {
  display: flex;
  gap: 2px;
  border-bottom: 1px solid var(--border);
  padding: 0 var(--sp-4);
  background: var(--ink-graphite);
}
.qilin-tab {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-mist);
  padding: var(--sp-3) var(--sp-4);
  border: none;
  background: transparent;
  cursor: pointer;
  position: relative;
  transition: color var(--t-med);
  border-radius: var(--r-sm) var(--r-sm) 0 0;
}
.qilin-tab:hover {
  color: var(--ink-mist-light);
  background: var(--ink-charcoal);
}
.qilin-tab.active {
  color: var(--qilin-gold-bright);
  background: var(--ink-card);
}
.qilin-tab.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 8px;
  right: 8px;
  height: 2px;
  background: var(--qilin-gold);
  border-radius: 1px;
}

/* ── 模态框 ── */
.qilin-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-slow) ease;
}
.qilin-modal.open {
  opacity: 1;
  pointer-events: auto;
}
.qilin-modal > .modal-body {
  background: var(--ink-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-lg);
  padding: var(--sp-6);
  max-width: 560px;
  width: 90vw;
  box-shadow: var(--sh-3);
  transform: translateY(20px);
  transition: transform var(--t-slow) ease;
}
.qilin-modal.open > .modal-body {
  transform: translateY(0);
}

/* ── Toast ── */
.qilin-toast {
  position: fixed;
  top: 80px;
  right: var(--sp-5);
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  pointer-events: none;
}
.qilin-toast .toast-item {
  pointer-events: auto;
  background: var(--ink-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--qilin-gold);
  border-radius: var(--r-md);
  padding: var(--sp-3) var(--sp-4);
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--ink-mist-light);
  box-shadow: var(--sh-2);
  animation: toastIn 0.3s ease, toastOut 0.3s ease 4.7s forwards;
  max-width: 360px;
}
.qilin-toast .toast-item.error {
  border-left-color: var(--qilin-red);
}
.qilin-toast .toast-item.success {
  border-left-color: #22c55e;
}
@keyframes toastIn {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes toastOut {
  from { opacity: 1; transform: translateX(0); }
  to   { opacity: 0; transform: translateX(40px); }
}

/* ── Sparkline 容器 ── */
.qilin-spark {
  display: inline-block;
  width: 100%;
  height: 36px;
}
.qilin-spark svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

/* ── Live 脉冲点 ── */
.qilin-live-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--up);
  position: relative;
}
.qilin-live-dot::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: var(--up);
  opacity: 0;
  animation: livePulse 2s infinite;
}
@keyframes livePulse {
  0%   { transform: scale(0.5); opacity: 0.6; }
  50%  { transform: scale(1.5); opacity: 0; }
  100% { transform: scale(0.5); opacity: 0; }
}

/* ── 导航链接 ── */
.qilin-nav-link {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 14px;
  color: var(--ink-mist);
  text-decoration: none;
  padding: 6px 14px;
  border-radius: var(--r-sm);
  transition: all var(--t-med) ease;
  position: relative;
  letter-spacing: 0.02em;
}
.qilin-nav-link:hover {
  color: var(--qilin-gold-bright);
  background: rgba(212, 175, 55, 0.08);
}
.qilin-nav-link.active {
  color: var(--qilin-gold-bright);
  background: rgba(200, 16, 46, 0.12);
}
.qilin-nav-link.active::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: -2px;
  height: 2px;
  background: var(--qilin-gold);
  border-radius: 1px;
}

/* ── Tier 芯片 ── */
.qilin-tier-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
}
.qilin-tier-chip.free { color: var(--ink-mist); border-color: var(--ink-stone); }
.qilin-tier-chip.pro  { color: #60a5fa; border-color: rgba(59, 130, 246, 0.5); background: rgba(59, 130, 246, 0.08); }
.qilin-tier-chip.vip  { color: var(--qilin-gold-bright); border-color: var(--qilin-gold); background: rgba(212, 175, 55, 0.08); }

/* ── 统计数字 ── */
.qilin-stat {
  text-align: center;
}
.qilin-stat .num {
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 600;
  color: var(--qilin-gold-bright);
  letter-spacing: -0.02em;
  line-height: 1;
}
.qilin-stat .lbl {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-top: var(--sp-2);
}

/* ── KPI 大数字 ── */
.qilin-kpi {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}
.qilin-kpi .value {
  font-family: var(--font-mono);
  font-size: 36px;
  font-weight: 700;
  color: var(--ink-mist-light);
  line-height: 1.1;
}
.qilin-kpi .value.up   { color: var(--up); }
.qilin-kpi .value.down { color: var(--down); }
.qilin-kpi .label {
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 0.08em;
}

/* ── 进度条 ── */
.qilin-progress {
  position: relative;
  height: 4px;
  background: var(--ink-charcoal);
  border-radius: 2px;
  overflow: hidden;
}
.qilin-progress .bar {
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--qilin-gold-dim), var(--qilin-gold), var(--qilin-gold-bright));
  transition: width var(--t-slow) ease;
}
.qilin-progress .bar.red {
  background: linear-gradient(90deg, var(--qilin-red-deep), var(--qilin-red), var(--qilin-red-soft));
}

/* ── 骨架屏 ── */
.qilin-skeleton {
  background: linear-gradient(90deg, var(--ink-charcoal) 25%, var(--ink-stone) 50%, var(--ink-charcoal) 75%);
  background-size: 200% 100%;
  animation: skeletonShimmer 1.5s infinite;
  border-radius: var(--r-sm);
}
@keyframes skeletonShimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── 涨跌色工具类 ── */
.col-up   { color: var(--up) !important; }
.col-down { color: var(--down) !important; }
.bg-up    { background: var(--up-soft) !important; }
.bg-down  { background: var(--down-soft) !important; }

/* ── 网格线 (图表用) ── */
.grid-line {
  stroke: var(--border);
  stroke-width: 1;
  stroke-dasharray: 2 4;
}

/* ==========================================================================
   顶部导航 (供 _topnav.html 使用，也可独立用)
   ========================================================================== */
.qilin-topnav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: linear-gradient(180deg, var(--ink-graphite) 0%, var(--ink-black) 100%);
  border-bottom: 1px solid var(--border-strong);
  box-shadow: var(--sh-1);
}
.qilin-topnav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--sp-5);
  display: flex;
  align-items: center;
  height: 60px;
  gap: var(--sp-5);
}
.qilin-topnav-brand {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  text-decoration: none;
  color: var(--ink-mist-light);
  flex-shrink: 0;
}
.qilin-topnav-brand .logo-seal {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--qilin-red) 0%, var(--qilin-red-deep) 100%);
  color: var(--qilin-gold-bright);
  display: grid;
  place-items: center;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 900;
  border: 1.5px solid var(--qilin-gold);
  border-radius: var(--r-sm);
  flex-shrink: 0;
}
.qilin-topnav-brand .brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.qilin-topnav-brand .brand-name {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 16px;
  color: var(--ink-mist-light);
  letter-spacing: 0.06em;
}
.qilin-topnav-brand .brand-sub {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  color: var(--qilin-gold);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  margin-top: 1px;
}
.qilin-topnav-menu {
  display: flex;
  gap: 2px;
  flex: 1;
  justify-content: center;
}
.qilin-topnav-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-shrink: 0;
}
.qilin-topnav-actions .btn-login {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-mist-light);
  text-decoration: none;
  padding: 6px 14px;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  transition: all var(--t-med);
}
.qilin-topnav-actions .btn-login:hover {
  border-color: var(--qilin-gold);
  color: var(--qilin-gold-bright);
}
.qilin-topnav-actions .btn-register {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-black);
  text-decoration: none;
  padding: 6px 14px;
  border-radius: var(--r-sm);
  background: linear-gradient(135deg, var(--qilin-gold), var(--qilin-gold-dim));
  border: 1px solid var(--qilin-gold);
  transition: all var(--t-med);
}
.qilin-topnav-actions .btn-register:hover {
  background: linear-gradient(135deg, var(--qilin-gold-bright), var(--qilin-gold));
  box-shadow: var(--sh-gold);
}

/* 用户下拉 */
.qilin-user-dropdown {
  position: relative;
}
.qilin-user-dropdown .avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--qilin-red), var(--qilin-red-deep));
  color: var(--qilin-gold-bright);
  display: grid;
  place-items: center;
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  border: 1.5px solid var(--border);
  transition: border-color var(--t-med);
}
.qilin-user-dropdown .avatar:hover {
  border-color: var(--qilin-gold);
}
.qilin-user-dropdown .menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--ink-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-md);
  padding: var(--sp-2) 0;
  min-width: 160px;
  box-shadow: var(--sh-3);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-4px);
  transition: all var(--t-med) ease;
}
.qilin-user-dropdown.open .menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.qilin-user-dropdown .menu a {
  display: block;
  padding: var(--sp-2) var(--sp-4);
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--ink-mist-light);
  text-decoration: none;
  transition: all var(--t-fast);
}
.qilin-user-dropdown .menu a:hover {
  background: var(--ink-charcoal);
  color: var(--qilin-gold-bright);
}
.qilin-user-dropdown .menu .divider {
  height: 1px;
  background: var(--border-divider);
  margin: var(--sp-2) var(--sp-4);
}

/* 移动端汉堡 */
.qilin-hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 6px;
  cursor: pointer;
  background: none;
  border: none;
}
.qilin-hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink-mist-light);
  border-radius: 1px;
  transition: all var(--t-slow) ease;
}
.qilin-hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(4px, 4px); }
.qilin-hamburger.active span:nth-child(2) { opacity: 0; }
.qilin-hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(4px, -4px); }

/* ==========================================================================
   页脚 (供 _footer_full.html / _footer_lite.html 使用)
   ========================================================================== */
.qilin-footer {
  background: linear-gradient(180deg, var(--ink-graphite) 0%, var(--ink-black) 100%);
  color: var(--text-dim);
  padding: var(--sp-7) var(--sp-5) var(--sp-5);
  border-top: 1px solid var(--border-strong);
  margin-top: var(--sp-8);
}
.qilin-footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: var(--sp-6);
  padding-bottom: var(--sp-5);
  border-bottom: 1px solid var(--border-divider);
}
.qilin-footer-col h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 13px;
  color: var(--qilin-gold);
  margin-bottom: var(--sp-4);
  letter-spacing: 0.12em;
}
.qilin-footer-col ul { list-style: none; }
.qilin-footer-col li { margin-bottom: var(--sp-2); }
.qilin-footer-col a {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--text-dim);
  text-decoration: none;
  transition: color var(--t-med);
}
.qilin-footer-col a:hover { color: var(--qilin-gold-bright); }
.qilin-footer-brand .name {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 20px;
  color: var(--ink-mist-light);
  margin-bottom: var(--sp-2);
  letter-spacing: 0.04em;
}
.qilin-footer-brand .tag {
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: var(--sp-3);
}
.qilin-footer-brand .extra-tags {
  display: flex;
  gap: var(--sp-2);
  flex-wrap: wrap;
}
.qilin-footer-bottom {
  max-width: var(--container);
  margin: var(--sp-4) auto 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-3);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-stone);
}
.qilin-footer-bottom .risk {
  color: var(--qilin-red-soft);
  font-weight: 500;
}
.qilin-footer-bottom .links {
  display: flex;
  gap: var(--sp-4);
}
.qilin-footer-bottom .links a {
  color: var(--ink-stone);
  text-decoration: none;
  transition: color var(--t-med);
}
.qilin-footer-bottom .links a:hover { color: var(--qilin-gold); }

/* 精简页脚 */
.qilin-footer-lite {
  background: var(--ink-graphite);
  border-top: 1px solid var(--border);
  padding: var(--sp-4) var(--sp-5);
  margin-top: var(--sp-6);
}
.qilin-footer-lite-inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-3);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-stone);
}

/* ==========================================================================
   响应式断点 (4 阶: 1440 / 1200 / 900 / 600)
   ========================================================================== */

/* ═══════════════════════════════════════════════════════════
   ★ 全站统一页面布局系统 (2026-06-21)
   所有 portal_*.html 共享: pg-hero > pg-section
   ═══════════════════════════════════════════════════════════ */

.pg-hero {
  padding: 80px 20px 60px;
  text-align: center;
  background: radial-gradient(ellipse at top, rgba(200,16,46,0.08) 0%, transparent 60%),
              linear-gradient(180deg, var(--ink-bg,#0f0f10) 0%, var(--ink-card,#16161a) 100%);
  border-bottom: 1px solid var(--border, rgba(212,175,55,0.15));
}
.pg-hero .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--qilin-gold,#D4AF37);
  margin-bottom: 16px;
}
.pg-hero h1 {
  font-family: var(--font-serif);
  font-size: 52px;
  font-weight: 800;
  color: var(--ink-mist-light,#F8F5F0);
  margin: 0 0 16px;
  letter-spacing: 0.05em;
  line-height: 1.15;
}
.pg-hero h1 .accent {
  background: linear-gradient(135deg, var(--qilin-red-soft,#C8102E) 0%, var(--qilin-gold-bright,#E8C547) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.pg-hero .subtitle {
  font-size: 17px;
  color: var(--ink-mist,#c8c5be);
  max-width: 720px;
  margin: 0 auto;
  line-height: 1.7;
}
.pg-section {
  padding: 56px 20px;
  max-width: 1200px;
  margin: 0 auto;
}
.pg-section-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 800;
  color: var(--ink-mist-light,#F8F5F0);
  margin: 0 0 8px;
  border-left: 3px solid var(--qilin-gold,#D4AF37);
  padding-left: 14px;
}
.pg-section-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.25em;
  color: var(--qilin-gold,#D4AF37);
  margin-bottom: 12px;
}
.pg-section-dek {
  color: var(--ink-mist,#c8c5be);
  font-size: 14px;
  margin: 4px 0 32px 17px;
  line-height: 1.6;
}

/* 兼容旧 class: page-header → pg-hero */
.page-header {
  padding: 80px 20px 60px;
  text-align: center;
  background: radial-gradient(ellipse at top, rgba(200,16,46,0.08) 0%, transparent 60%),
              linear-gradient(180deg, var(--ink-bg) 0%, var(--ink-card) 100%);
  border-bottom: 1px solid var(--border);
}
.page-header-inner {
  max-width: 800px;
  margin: 0 auto;
}
.page-header .eyebrow, .page-header-inner .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--qilin-gold);
  margin-bottom: 16px;
}
.page-title {
  font-family: var(--font-serif);
  font-size: 52px;
  font-weight: 800;
  color: var(--ink-mist-light);
  margin: 0 0 16px;
  line-height: 1.15;
}
.page-dek {
  font-size: 17px;
  color: var(--ink-mist);
  max-width: 720px;
  margin: 0 auto;
  line-height: 1.7;
}

/* 兼容旧 class: section / container */
.section {
  padding: 56px 20px;
}
.section-head {
  text-align: center;
  margin-bottom: 40px;
}
.section-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 800;
  color: var(--ink-mist-light);
  margin: 0 0 8px;
}
.section-title-num {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--qilin-gold);
  margin-right: 8px;
}
.section-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--qilin-gold);
  opacity: 0.7;
}
.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.25em;
  color: var(--qilin-gold);
  margin-bottom: 8px;
}
.gold-divider {
  display: inline-block;
  width: 40px;
  height: 2px;
  background: var(--qilin-gold);
  margin: 0 12px;
  vertical-align: middle;
}

/* 响应式 */
@media (max-width: 900px) {
  .pg-hero, .page-header { padding: 56px 20px 40px; }
  .pg-hero h1, .page-title { font-size: 34px; }
  .pg-hero .subtitle, .page-dek { font-size: 15px; }
  .pg-section, .section { padding: 40px 16px; }
  .pg-section-title, .section-title { font-size: 22px; }
}
@media (max-width: 1440px) {
  .qilin-topnav-menu { gap: 1px; }
  .qilin-topnav-menu .qilin-nav-link { padding: 6px 10px; font-size: 13px; }
}

@media (max-width: 1200px) {
  .qilin-footer-inner { grid-template-columns: 2fr 1fr 1fr; }
}

@media (max-width: 900px) {
  .qilin-topnav-inner { padding: 0 var(--sp-4); height: 56px; }
  /* 改为横向滚动菜单: 默认可见, 用户可滑 */
  .qilin-topnav-menu {
    display: flex;
    flex: 1;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
    gap: 1px;
    justify-content: flex-start;
    margin: 0 var(--sp-2);
  }
  .qilin-topnav-menu::-webkit-scrollbar { display: none; }
  .qilin-topnav-menu .qilin-nav-link {
    flex: 0 0 auto;
    padding: 8px 10px;
    font-size: 12px;
    white-space: nowrap;
  }
  /* hamburger 仍保留, 用于用户主动 "显示完整列表" 入口 */
  .qilin-hamburger { display: flex; }
  .qilin-topnav-menu.mobile-open {
    display: flex;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--ink-black);
    border-top: 1px solid var(--border-strong);
    flex-direction: column;
    padding: var(--sp-4);
    gap: 2px;
    box-shadow: var(--sh-2);
    overflow: visible;
  }
  .qilin-footer-inner { grid-template-columns: 1fr 1fr; }
}


/* ── FAQ / Docs / Help 双栏布局 ── */
.faq-layout,
.docs-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--sp-6);
  align-items: start;
  max-width: var(--container);
  margin: 0 auto;
}

/* 侧边栏 */
.faq-sidebar,
.docs-sidebar {
  position: sticky;
  top: 80px;
  background: var(--ink-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: var(--sp-4);
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
}

/* 侧边栏分类标题 */
.faq-cat,
.docs-cat {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--qilin-gold);
  padding: 12px 8px 4px;
}

.faq-cat:first-child,
.docs-cat:first-child {
  padding-top: 4px;
}

/* 侧边栏链接 */
.faq-link,
.docs-link {
  display: block;
  padding: 6px 8px;
  font-size: 13px;
  color: var(--ink-mist-light);
  text-decoration: none;
  border-radius: var(--r-sm);
  transition: all var(--t-fast);
}

.faq-link:hover,
.docs-link:hover {
  background: color-mix(in srgb, var(--qilin-gold) 10%, transparent);
  color: var(--qilin-gold-bright);
}

/* 侧边栏当前激活 */
.faq-link.active,
.docs-link.active {
  background: color-mix(in srgb, var(--qilin-gold) 15%, transparent);
  color: var(--qilin-gold-bright);
  font-weight: 600;
}

/* 内容区 */
.faq-content,
.docs-content {
  min-width: 0;
  background: var(--ink-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: var(--sp-6);
}

/* FAQ 搜索框 */
.faq-search {
  margin-bottom: var(--sp-5);
}

.faq-search-input {
  width: 100%;
  padding: 12px 16px;
  background: var(--ink-charcoal);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  color: var(--ink-mist-light);
  font-size: 14px;
  outline: none;
  transition: border-color var(--t-fast);
}

.faq-search-input:focus {
  border-color: var(--qilin-gold);
}

.faq-search-input::placeholder {
  color: var(--text-dim);
}

/* FAQ 条目 */
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  margin-bottom: var(--sp-3);
  overflow: hidden;
  background: var(--ink-charcoal);
}

.faq-item.open {
  border-color: var(--qilin-gold-dim);
}

.faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  cursor: pointer;
  user-select: none;
  transition: background var(--t-fast);
}

.faq-q:hover {
  background: color-mix(in srgb, var(--qilin-gold) 5%, transparent);
}

.faq-q-text {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-mist-light);
  display: flex;
  align-items: center;
  gap: 8px;
}

.faq-q-arrow {
  font-size: 12px;
  color: var(--qilin-gold);
  transition: transform var(--t-fast);
  flex-shrink: 0;
}

.faq-item.open .faq-q-arrow {
  transform: rotate(90deg);
}

.faq-a {
  padding: 0 16px 16px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-dim);
  display: none;
}

.faq-item.open .faq-a {
  display: block;
}

.faq-a p {
  margin: 0 0 8px;
}

.faq-tag {
  display: inline-block;
  padding: 1px 6px;
  font-size: 10px;
  font-weight: 700;
  border-radius: var(--r-xs);
}

.faq-tag-hot {
  background: var(--qilin-red-soft);
  color: white;
}

/* API 端点卡片 */
.api-endpoint {
  margin-bottom: var(--sp-5);
  padding-bottom: var(--sp-5);
  border-bottom: 1px solid var(--border);
}

.api-endpoint:last-child {
  border-bottom: none;
}

.api-method {
  display: inline-block;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  border-radius: var(--r-xs);
  margin-right: 8px;
}

.api-method.get { background: #1a5c2a; color: #4ade80; }
.api-method.post { background: #1a3a5c; color: #60a5fa; }
.api-method.put { background: #5c4a1a; color: #fbbf24; }
.api-method.delete { background: #5c1a1a; color: #f87171; }

.api-path {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--qilin-gold-bright);
}

.api-desc {
  font-size: 13px;
  color: var(--text-dim);
  margin: 8px 0;
  line-height: 1.7;
}

/* 代码块 / 预格式化 */
.api-code {
  background: var(--ink-ink);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  overflow-x: auto;
  margin: 12px 0;
  color: var(--ink-mist-light);
}

/* 响应式: 小屏叠为单列 */
@media (max-width: 768px) {
  .faq-layout,
  .docs-layout {
    grid-template-columns: 1fr;
  }
  
  .faq-sidebar,
  .docs-sidebar {
    position: static;
    max-height: none;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 4px 12px;
    padding: var(--sp-3);
  }
  
  .faq-cat,
  .docs-cat {
    width: 100%;
    padding: 8px 0 0;
  }
  
  .faq-link,
  .docs-link {
    display: inline-block;
    padding: 4px 10px;
    font-size: 12px;
    border: 1px solid var(--border);
    border-radius: var(--r-full);
  }
}

@media (max-width: 600px) {
  .container, .container-narrow { padding: 0 var(--sp-4); }
  .qilin-topnav-inner { padding: 0 var(--sp-3); }
  .qilin-topnav-brand .brand-sub { display: none; }
  .qilin-footer-inner { grid-template-columns: 1fr; gap: var(--sp-5); }
  .qilin-footer-bottom { flex-direction: column; text-align: center; gap: var(--sp-2); }
  .qilin-footer-lite-inner { flex-direction: column; text-align: center; }
}

/* ==========================================================================
   SVG 图标通用类 (Lucide 风格, 2026-06-19 阶段 3 预备)
   用法: <svg class="icon icon-18">...</svg>
   ========================================================================== */
.icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  vertical-align: -0.125em;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}
.icon-12 { font-size: 12px; }
.icon-14 { font-size: 14px; }
.icon-16 { font-size: 16px; }
.icon-18 { font-size: 18px; }
.icon-20 { font-size: 20px; }
.icon-24 { font-size: 24px; }
.icon-gold { color: var(--qilin-gold); }
.icon-red  { color: var(--qilin-red); }
.icon-mist { color: var(--ink-mist); }

/* ========== 首页 Hero 专用 (阶段 4) ========== */
.hero-display {
  font-family: var(--font-display);
  font-size: clamp(40px, 5.5vw, 64px);
  font-weight: 900;
  letter-spacing: .02em;
  line-height: 1.1;
  color: var(--ink-mist-light);
  margin-bottom: 18px;
  text-shadow: 0 2px 24px rgba(0,0,0,.4);
}
.hero-display .accent-red {
  color: var(--qilin-red);
  background: linear-gradient(135deg, var(--qilin-red), var(--qilin-red-deep));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-display .accent-gold {
  background: linear-gradient(135deg, var(--qilin-gold-bright), var(--qilin-gold));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 24px rgba(212,175,55,.25);
}

.gold-divider {
  display: inline-block;
  width: 32px;
  height: 2px;
  background: linear-gradient(90deg, var(--qilin-gold-bright), transparent);
  margin-right: 10px;
  vertical-align: middle;
}

.hero-cta-primary {
  background: linear-gradient(135deg, var(--qilin-gold-bright), var(--qilin-gold));
  color: var(--ink-black);
  border: none;
  font-weight: 700;
  box-shadow: 0 4px 16px rgba(212,175,55,.25), inset 0 1px 0 rgba(255,255,255,.3);
  transition: transform var(--t-fast), box-shadow var(--t-fast);
}
.hero-cta-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(212,175,55,.4), inset 0 1px 0 rgba(255,255,255,.4);
}
.hero-cta-ghost {
  background: transparent;
  color: var(--ink-mist-light);
  border: 1px solid var(--border-strong);
  transition: border-color var(--t-fast), background var(--t-fast);
}
.hero-cta-ghost:hover {
  border-color: var(--qilin-gold);
  background: rgba(212,175,55,.06);
}

.hero-stat-num {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--qilin-gold-bright), var(--ink-mist-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -.02em;
}

.cta-banner-glow {
  background:
    radial-gradient(circle at 90% 50%, rgba(212,175,55,.18), transparent 60%),
    linear-gradient(135deg, var(--ink-graphite), var(--ink-black));
  border: 1px solid var(--qilin-gold);
  border-radius: var(--r-2xl);
  padding: 40px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,.3), 0 0 0 1px rgba(212,175,55,.1);
}
.cta-banner-glow::before {
  content: '';
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: 200px;
  background: linear-gradient(90deg, transparent, rgba(212,175,55,.04));
  pointer-events: none;
}
.cta-banner-glow h3 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 900;
  color: var(--ink-mist-light);
}

@media (max-width: 900px) {
  .hero-display { font-size: 40px; }
  .cta-banner-glow { padding: 24px; }
  .cta-banner-glow h3 { font-size: 20px; }
}

/* ==========================================================================
   frontend-design 终极打磨 · 墨金宋代金石 + 现代终端 (2026-06-19)
   ========================================================================== */

/* === 墨纹噪点底纹 (全站) === */
body::before {
  content: '';
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    radial-gradient(circle at 15% 20%, rgba(200,16,46,.04), transparent 40%),
    radial-gradient(circle at 85% 80%, rgba(212,175,55,.05), transparent 40%);
  opacity: .9;
}

/* 浅色模式噪点反转 */
html.light body::before {
  background-image:
    radial-gradient(circle at 15% 20%, rgba(200,16,46,.06), transparent 40%),
    radial-gradient(circle at 85% 80%, rgba(212,175,55,.08), transparent 40%);
}

/* === 入场动画 (Scroll Reveal + Staggered Fade Up) === */
@keyframes revealUp {
  from { opacity: 0; transform: translateY(24px); filter: blur(2px); }
  to   { opacity: 1; transform: translateY(0);   filter: blur(0); }
}
@keyframes revealFade {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes sealStamp {
  0%   { opacity: 0; transform: scale(1.4) rotate(-8deg); filter: blur(4px); }
  60%  { opacity: 1; transform: scale(.96) rotate(1deg); }
  100% { opacity: 1; transform: scale(1) rotate(0); filter: blur(0); }
}
@keyframes inkDrop {
  0%   { transform: scale(0) rotate(0); opacity: 0; }
  40%  { transform: scale(1.2) rotate(180deg); opacity: 1; }
  100% { transform: scale(1) rotate(360deg); opacity: 1; }
}
@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
@keyframes priceFlash {
  0%, 100% { background-color: transparent; }
  50%      { background-color: rgba(212,175,55,.18); }
}
@keyframes drift {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .8s cubic-bezier(.22,1,.36,1), transform .8s cubic-bezier(.22,1,.36,1), filter .8s cubic-bezier(.22,1,.36,1);
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}
.reveal[data-delay="1"] { transition-delay: .08s; }
.reveal[data-delay="2"] { transition-delay: .16s; }
.reveal[data-delay="3"] { transition-delay: .24s; }
.reveal[data-delay="4"] { transition-delay: .32s; }
.reveal[data-delay="5"] { transition-delay: .40s; }
.reveal[data-delay="6"] { transition-delay: .48s; }
.reveal[data-delay="7"] { transition-delay: .56s; }
.reveal[data-delay="8"] { transition-delay: .64s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* === 金色印章 (Hero 装饰 + 套餐推荐标识) === */
.gold-seal {
  display: inline-grid;
  place-items: center;
  width: 56px;
  height: 56px;
  background:
    radial-gradient(circle at 30% 30%, rgba(255,255,255,.15), transparent 60%),
    linear-gradient(135deg, var(--qilin-gold-bright), var(--qilin-gold), var(--qilin-gold-dim));
  color: var(--ink-black);
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 900;
  border-radius: 4px;
  box-shadow:
    inset 0 0 0 2px rgba(0,0,0,.15),
    inset 0 0 0 3px rgba(212,175,55,.4),
    0 6px 20px rgba(212,175,55,.35),
    0 2px 4px rgba(0,0,0,.4);
  position: relative;
  transform: rotate(-2deg);
  animation: sealStamp .9s cubic-bezier(.22,1,.36,1) both;
}
.gold-seal::after {
  content: '';
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(139,0,0,.4);
  border-radius: 2px;
  pointer-events: none;
}
.gold-seal.lg { width: 88px; height: 88px; font-size: 52px; }
.gold-seal.sm { width: 40px; height: 40px; font-size: 22px; }

/* === 数字滚动 / 闪光 === */
.hero-stat-num.flash { animation: priceFlash .8s ease-out; }

/* === 烫金文字 (微光扫动) === */
.gold-shimmer {
  background: linear-gradient(90deg,
    var(--qilin-gold-dim) 0%,
    var(--qilin-gold-bright) 50%,
    var(--qilin-gold-dim) 100%);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 6s linear infinite;
}

/* === 墨滴按钮 (主题切换) === */
.theme-toggle-anim {
  transition: transform var(--t-med);
}
.theme-toggle-anim:hover { transform: rotate(15deg) scale(1.1); }
.theme-toggle-anim.switching {
  animation: inkDrop .5s cubic-bezier(.22,1,.36,1);
}

/* === 板块行 (悬停指示条) === */
.sector-row {
  position: relative;
  padding-left: 18px;
  transition: padding-left var(--t-med), background var(--t-med);
}
.sector-row::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  width: 3px; height: 0;
  background: linear-gradient(180deg, var(--qilin-gold-bright), var(--qilin-red));
  border-radius: 2px;
  transform: translateY(-50%);
  transition: height var(--t-med);
}
.sector-row:hover {
  padding-left: 24px;
  background: rgba(212,175,55,.04);
}
.sector-row:hover::before { height: 60%; }

/* === 选股卡 (Top 3) 浮起增强 === */
.pick-card {
  cursor: pointer;
  padding: 22px 20px;
  background:
    radial-gradient(circle at 100% 0%, rgba(212,175,55,.06), transparent 50%),
    linear-gradient(180deg, var(--ink-card) 0%, var(--ink-graphite) 100%);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-lg);
  position: relative;
  overflow: hidden;
  transition: transform var(--t-med), border-color var(--t-med), box-shadow var(--t-med);
}
.pick-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(212,175,55,.08) 50%, transparent 60%);
  background-size: 200% 200%;
  background-position: 100% 100%;
  opacity: 0;
  transition: opacity var(--t-slow);
  pointer-events: none;
}
.pick-card:hover {
  transform: translateY(-4px) scale(1.01);
  border-color: var(--qilin-gold);
  box-shadow: var(--sh-3), var(--sh-gold), 0 0 0 1px rgba(212,175,55,.3);
}
.pick-card:hover::before {
  opacity: 1;
  animation: shimmer 3s ease-in-out infinite;
}
.pick-card .rank {
  position: absolute;
  top: 0; right: 0;
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--qilin-red), var(--qilin-red-deep));
  color: var(--qilin-gold-bright);
  display: grid; place-items: center;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 22px;
  letter-spacing: -.02em;
  box-shadow: inset 0 0 0 1px rgba(212,175,55,.3), 0 2px 8px rgba(0,0,0,.4);
}

/* === 数字颜色 === */
.col-up { color: var(--up); }
.col-down { color: var(--down); }
.bg-up { background: var(--up-soft); }
.bg-down { background: var(--down-soft); }

/* === 战略表头 (金边分割) === */
.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--qilin-red);
  letter-spacing: .4em;
  font-weight: 700;
  margin-bottom: 8px;
}
.section-eyebrow::before {
  content: '';
  width: 24px; height: 1px;
  background: linear-gradient(90deg, var(--qilin-gold-bright), transparent);
}

/* === Hero 升级 (压印感) === */

/* === 选择行 (leaderboard 表格) === */
.lb-row {
  display: grid;
  grid-template-columns: 48px 1fr 100px 90px 80px 80px;
  gap: 12px;
  align-items: center;
  padding: 14px 16px;
  border-bottom: 1px dashed var(--border-divider);
  transition: background var(--t-fast), padding-left var(--t-fast);
  position: relative;
}
.lb-row::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 0;
  background: linear-gradient(90deg, var(--qilin-gold), transparent);
  transition: width var(--t-med);
}
.lb-row:hover {
  background: rgba(212,175,55,.04);
  padding-left: 24px;
}
.lb-row:hover::before { width: 3px; }
.lb-row.header {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .24em;
  color: var(--ink-mist);
  padding: 10px 16px;
  background: rgba(212,175,55,.03);
  border-bottom: 1px solid var(--border);
}
.lb-row.header:hover { padding-left: 16px; background: rgba(212,175,55,.03); }
.lb-row.header::before { display: none; }
.lb-row .rank-badge {
  display: grid; place-items: center;
  width: 32px; height: 32px;
  border-radius: 50%;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 16px;
  color: var(--ink-black);
  background: linear-gradient(135deg, var(--qilin-gold-bright), var(--qilin-gold));
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.2);
}
.lb-row .rank-badge.dim {
  background: linear-gradient(135deg, var(--ink-charcoal), var(--ink-graphite));
  color: var(--ink-mist);
  box-shadow: inset 0 0 0 1px var(--border-strong);
}
@media (max-width: 900px) {
  .lb-row { grid-template-columns: 36px 1fr 80px 70px; }
  .lb-row > :nth-child(5), .lb-row > :nth-child(6) { display: none; }
}

/* === 引用块 (research 学术) === */
.cite-block {
  border-left: 3px solid var(--qilin-gold);
  padding: 12px 16px;
  margin: 16px 0;
  background: rgba(212,175,55,.04);
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--ink-mist-light);
  border-radius: 0 var(--r-md) var(--r-md) 0;
}
.cite-block cite {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 11px;
  color: var(--ink-mist);
  letter-spacing: .04em;
}

/* === 术语卡 (learn 28 术语) === */
.term-card {
  padding: 14px 16px;
  background: var(--ink-card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  transition: border-color var(--t-fast), transform var(--t-fast);
  position: relative;
  overflow: hidden;
}
.term-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 0; height: 2px;
  background: linear-gradient(90deg, var(--qilin-gold-bright), transparent);
  transition: width var(--t-med);
}
.term-card:hover {
  border-color: var(--qilin-gold);
  transform: translateY(-2px);
}
.term-card:hover::after { width: 100%; }
.term-card .term-zh {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 14px;
  color: var(--ink-mist-light);
  margin-bottom: 2px;
}
.term-card .term-en {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--qilin-gold);
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

/* === 文档代码块 (docs API) === */
.api-endpoint {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--ink-graphite);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  font-family: var(--font-mono);
  font-size: 12px;
  transition: border-color var(--t-fast);
}
.api-endpoint:hover { border-color: var(--qilin-gold); }
.api-endpoint .method {
  display: inline-block;
  padding: 2px 6px;
  border-radius: 2px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .04em;
  background: rgba(212,175,55,.15);
  color: var(--qilin-gold-bright);
  border: 1px solid rgba(212,175,55,.3);
}
.api-endpoint .method.post { background: rgba(59,130,246,.15); color: #93c5fd; border-color: rgba(59,130,246,.4); }
.api-endpoint .method.del  { background: rgba(239,68,68,.15); color: #fca5a5; border-color: rgba(239,68,68,.4); }
.api-endpoint .path { color: var(--ink-mist-light); flex: 1; }

/* === FAQ 手风琴 === */
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  margin-bottom: 10px;
  overflow: hidden;
  transition: border-color var(--t-fast);
}
.faq-item[open] { border-color: var(--qilin-gold); }
.faq-item summary {
  padding: 14px 18px;
  cursor: pointer;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 14px;
  color: var(--ink-mist-light);
  list-style: none;
  display: flex; justify-content: space-between; align-items: center;
  transition: background var(--t-fast);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { background: rgba(212,175,55,.04); }
.faq-item summary::after {
  content: '+';
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--qilin-gold);
  transition: transform var(--t-med);
}
.faq-item[open] summary::after { content: '−'; }
.faq-item .faq-body {
  padding: 0 18px 14px;
  font-size: 13px;
  color: var(--ink-mist);
  line-height: 1.7;
}

/* === ScrollReveal Observer 注入 (用 JS 自动绑定 .reveal) === */
html.js-reveal-ready .reveal:not(.in-view) {
  /* 仅在 JS ready 后才隐藏, 防 no-JS 用户看不到 */
}

/* === 焦点环 (键盘可达性) === */
:focus-visible {
  outline: 2px solid var(--qilin-gold);
  outline-offset: 2px;
  border-radius: 2px;
}

/* === 选择高亮 === */
::selection {
  background: var(--qilin-gold);
  color: var(--ink-black);
}



/* ==========================================================================
   移动端深度适配 (2026-06-19 阶段 3 系统性优化)
   美学方向: 保留墨金宋代金石 + 现代终端
   4 大根因 → 4 套规则, 19 页一次性覆盖
   ========================================================================== */

/* ── 全局基础 (≤900px): 触摸目标 + 字号底线 + 安全区 + nav 横向滚动 ── */
@media (max-width: 900px) {
  /* 触摸目标底线 (Apple HIG 44×44pt)
     注: nav-link 例外, min-width:0 让 14 项可横滑不溢出 */
  .qilin-btn,
  .btn-login,
  .btn-register,
  button:not(.qilin-nav-link),
  [role="button"],
  .qilin-hamburger,
  a.btn,
  a.qilin-btn,
  a[role="button"],
  footer a {
    min-height: 44px;
    min-width: 44px;
  }

  /* nav-link: 取消 min-width, 高度仍保 44, padding 自适 */
  .qilin-nav-link {
    min-height: 44px;
    min-width: 0;
    padding: 8px 12px;
  }
  /* 顶部 brand logo 加到 44 触摸 */
  .qilin-topnav-brand {
    min-height: 44px;
    min-width: 44px;
  }

  /* 字号底线 (iOS auto-zoom 避免) */
  input, select, textarea, button {
    font-size: 16px !important;
  }

  /* 装饰小字 10-11px → 12px (老花眼可读) */
  .tag-mono, .eyebrow, .brand-sub, .lb-row.header,
  [class*="-mono"], [class*="-eyebrow"], [class*="-label"] {
    font-size: 12px !important;
    letter-spacing: .04em;
  }

  /* hero h1 缩到 32px (从 56px+ hero 降下来) */
  .hero-display { font-size: 36px !important; line-height: 1.2; }
  .hero-stat-num { font-size: 36px !important; }

  /* CTA banner 不挤 */
  .cta-banner-glow { padding: 20px !important; }
  .cta-banner-glow h3 { font-size: 20px; }

  /* 主网格塌成单列 (含 1fr 1fr / repeat 2/3/4 全覆盖) */
  [style*="grid-template-columns: repeat(4"],
  [style*="grid-template-columns: repeat(3"],
  [style*="grid-template-columns:repeat(4"],
  [style*="grid-template-columns:repeat(3"],
  [style*="grid-template-columns: repeat(2"],
  [style*="grid-template-columns:repeat(2"],
  [style*="grid-template-columns: 1fr 1fr"],
  [style*="grid-template-columns:1fr 1fr"],
  [style*="grid-template-columns: 1fr 2fr"],
  [style*="grid-template-columns: 2fr 1fr"],
  .grid-4, .grid-3, .grid-2,
  .pricing-grid, .pick-grid {
    grid-template-columns: 1fr !important;
  }

  /* flex 横排变纵排 (footer / cta-row) */
  [style*="display: flex"][style*="flex-direction: row"],
  .qilin-cta-row, .footer-grid, .footer-cols {
    flex-direction: column !important;
  }
}

/* ── ≤600px (主流手机): 更紧凑, 安全区留出 ── */
@media (max-width: 600px) {
  html { font-size: 15px; }
  body { padding: 0 env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left); }

  /* hero 再缩 */
  .hero-display { font-size: 28px !important; }
  .hero-stat-num { font-size: 28px !important; }
  .hero-stat-label { font-size: 12px; }

  /* page section 不挤 */
  .page-section { padding: 32px 16px !important; }
  .page-header { padding: 24px 16px !important; }

  /* page-header 标题字 */
  .page-header h1 { font-size: 24px !important; }
  .page-dek { font-size: 14px; }

  /* ── ★★★ 顶部 NAV 核心修复: 14 项可横滑不溢出 ─── */
  .qilin-topnav {
    height: 56px;
    overflow: hidden;  /* 关键: 顶层 hidden 截断任何溢出到 body */
    min-width: 0;       /* 关键: flex 容器 min-width:0 才能缩到 viewport 宽 */
  }
  .qilin-topnav-inner {
    padding: 0 var(--sp-2);
    height: 56px;
    gap: 4px;
    overflow: hidden;  /* 关键: inner overflow hidden, 阻止 nav 撑大 body */
    min-width: 0;  /* 关键: flex 容器 min-width:0 才能缩到 viewport 宽 */
  }
  .qilin-topnav-brand {
    flex: 0 0 auto;
    margin-right: 4px;
  }
  .qilin-topnav-brand .brand-text {
    /* 小屏只显 logo, 隐藏中英文 */
    display: none;
  }
  .qilin-topnav-menu {
    display: flex !important;
    flex: 1 1 0;
    min-width: 0;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
    gap: 0;
    margin: 0;
    padding: 0;
    height: 56px;
  }
  .qilin-topnav-menu::-webkit-scrollbar { display: none; }
  .qilin-topnav-menu .qilin-nav-link {
    flex: 0 0 auto;
    min-width: 0;
    padding: 0 12px;
    height: 56px;
    line-height: 56px;
    font-size: 13px;
    white-space: nowrap;
  }
  .qilin-topnav-actions {
    flex: 0 0 auto;
    margin-left: 4px;
  }
  .qilin-hamburger { display: none; } /* 横滑方案下不需要汉堡 */
  .qilin-topnav-menu.mobile-open {
    display: flex !important;
    position: static;
    flex-direction: row;
    background: transparent;
    border: 0;
    padding: 0;
    box-shadow: none;
    overflow-x: auto;
  }

  /* ── 表格 (因子/模型/数据): 横向滚动 + 触摸优化 ── */
  table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
  }
  table thead { display: table-header-group; }
  table tbody tr { display: table-row; }
  table tbody td {
    display: table-cell;
    padding: 10px 12px;
    font-size: 13px;
    min-width: 60px;
  }
  /* 真表格 (lb-row / data-table) 不强行转块, 让用户横滑 (更稳, 不丢数据) */

  /* ── 因子卡片组: 1 列 ── */
  .qilin-card,
  [class*="factor-card"],
  [class*="model-card"],
  [class*="pick-card"] {
    padding: 16px !important;
    margin-bottom: 12px;
  }

  /* ── 三档套餐: 1 列 ── */
  .pricing-grid,
  [class*="pricing-"] {
    grid-template-columns: 1fr !important;
  }

  /* ── 表单 (auth.html / backtest / select): 触摸友好 ── */
  .form-input, .form-select, .form-textarea {
    height: 48px !important;
    font-size: 16px !important;
    padding: 12px 14px !important;
  }
  .form-label { font-size: 13px; }

  /* ── K 线图区 (live.html): 高度自适应 ── */
  [class*="kline-"],
  canvas[id*="kline"] {
    width: 100% !important;
    height: 280px !important;
  }

  /* ── leaderboard 行: 隐藏次要列 ── */
  .lb-row {
    grid-template-columns: 40px 1fr 70px !important;
    padding: 10px 12px !important;
    gap: 8px !important;
    font-size: 13px;
  }
  .lb-row > :nth-child(n+4) { display: none; }

  /* ── research / learn 卡片: 1 列 ── */
  [class*="grid-template-columns: 1fr 1fr"],
  [class*="grid-template-columns: 1fr 2fr"],
  [class*="grid-template-columns: 2fr 1fr"] {
    grid-template-columns: 1fr !important;
  }

  /* ── 智能体按钮 / CTA: 全宽 ── */
  .cta-banner,
  .qilin-cta-row {
    flex-direction: column;
    align-items: stretch !important;
  }
  .cta-banner a, .cta-banner button { width: 100%; }

  /* ── 浮窗关闭按钮加大 ── */
  .qilin-modal-close { min-height: 44px; min-width: 44px; }

  /* ── code / pre 滚动 ── */
  pre, code { font-size: 12px; word-break: break-word; }

  /* ── 顶部 NAV 紧凑 ── */
  .qilin-topnav-brand .brand-sub { display: none; }

  /* ── 顶部用户菜单下拉宽度 100% ── */
  .qilin-user-dropdown .menu { right: 0; min-width: 200px; }

  /* ── 选股结果显示 (select.html): 数字紧凑 ── */
  .pick-card { padding: 14px !important; }
  .pick-card .pick-code { font-size: 18px !important; }
  .pick-card .pick-name { font-size: 14px !important; }

  /* ── ★★★ 长条形终极防御: 内容容器 (research / learn 6500+ px) ─── */
  section.section,
  section [class*="section"],
  main > .container,
  main > section {
    max-width: 100% !important;
    width: 100% !important;
    min-width: 0;  /* flex 容器必须, 否则被子撑大 */
  }

  /* 任何 flex 容器允许收缩 */
  body, html, main, section, .container, .qilin-card,
  .qilin-topnav, .qilin-topnav-inner, .qilin-topnav-menu {
    min-width: 0;
  }

  /* footer 链接 100% 宽 (提升触摸) */
  .qilin-footer a, footer a, .footer a {
    min-height: 44px;
    display: flex;
    align-items: center;
    padding: 10px 12px;
  }
  .qilin-footer-cols, .qilin-footer-grid, .footer-cols, .footer-grid {
    display: flex !important;
    flex-direction: column !important;
    gap: 4px !important;
  }

  /* 任何 absolute/fixed 大尺寸装饰 (印章/光斑) 强制缩 */
  .qilin-stamp, [class*="stamp"], [class*="seal"] {
    transform: scale(0.7);
    transform-origin: top right;
  }
}

/* ── ≤380px (iPhone SE/小屏): 极限紧凑 ── */
@media (max-width: 380px) {
  html { font-size: 14px; }
  .hero-display { font-size: 24px !important; }
  .qilin-tier-chip { font-size: 11px; padding: 2px 6px; }
  /* nav-link 再缩 */
  .qilin-topnav-menu .qilin-nav-link {
    padding: 0 8px;
    font-size: 12px;
  }
}

/* ── ★★★ 终极兜底: 防止任何元素撑大 body ─── */
html, body {
  overflow-x: hidden !important;
  max-width: 100vw;
  position: relative;
}

/* ── 横向滚动禁制 (除 chart canvas / pre / 真表格外) ── */
body { overflow-x: hidden; }