/* ============================================
   AI投资导航网 - 全局样式系统
   设计理念：专业、可信赖、现代、响应式
   ============================================ */

/* ---------- CSS 变量 (设计令牌) ---------- */
:root {
  --primary: #0a7c5a;
  --primary-dark: #075c42;
  --primary-light: #10b981;
  --accent: #f59e0b;
  --accent-dark: #d97706;

  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --info: #3b82f6;

  --bg: #f8fafc;
  --bg-alt: #f1f5f9;
  --surface: #ffffff;
  --surface-hover: #f8fafc;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --text: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  --gradient-primary: linear-gradient(135deg, #0a7c5a 0%, #10b981 100%);
  --gradient-dark: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  --gradient-hero: linear-gradient(135deg, #075c42 0%, #0a7c5a 50%, #10b981 100%);

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -1px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 10px 15px -3px rgba(15, 23, 42, 0.1), 0 4px 6px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 20px 25px -5px rgba(15, 23, 42, 0.12), 0 10px 10px -5px rgba(15, 23, 42, 0.06);

  --radius-sm: 6px;
  --radius: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-8: 3rem;
  --space-10: 4rem;
  --space-12: 6rem;

  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
    "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", monospace;

  --header-h: 68px;
  --container: 1200px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; font-size: inherit; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--space-5); }
.container-wide { max-width: 1400px; margin: 0 auto; padding: 0 var(--space-5); }

/* ---------- 头部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--border);
  height: var(--header-h);
}
.navbar { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.brand { display: flex; align-items: center; gap: var(--space-2); font-size: 1.25rem; font-weight: 800; color: var(--primary-dark); }
.brand-logo {
  width: 36px; height: 36px; border-radius: var(--radius-sm);
  background: var(--gradient-primary);
  display: flex; align-items: center; justify-content: center;
  color: white; font-weight: 800; font-size: 1.1rem; box-shadow: var(--shadow);
}
.nav-links { display: flex; align-items: center; gap: var(--space-6); }
.nav-links a { color: var(--text-secondary); font-weight: 500; font-size: 0.95rem; position: relative; padding: var(--space-2) 0; }
.nav-links a:hover, .nav-links a.active { color: var(--primary); }
.nav-links a.active::after {
  content: ""; position: absolute; bottom: -2px; left: 0; right: 0;
  height: 2px; background: var(--primary); border-radius: 2px;
}
.nav-actions { display: flex; align-items: center; gap: var(--space-3); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  padding: 0.65rem 1.4rem; border-radius: var(--radius); font-weight: 600; font-size: 0.95rem;
  transition: var(--transition); white-space: nowrap; border: 1.5px solid transparent; cursor: pointer;
}
.btn-primary { background: var(--gradient-primary); color: white; box-shadow: var(--shadow); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-outline { background: transparent; border-color: var(--border-strong); color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: var(--surface-hover); }
.btn-ghost { background: transparent; color: var(--text-secondary); }
.btn-ghost:hover { background: var(--surface-hover); color: var(--text); }
.btn-lg { padding: 0.85rem 2rem; font-size: 1.05rem; }
.btn-block { width: 100%; }

/* ---------- 通用组件 ---------- */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md); padding: var(--space-6); box-shadow: var(--shadow-sm); transition: var(--transition); }
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

.badge { display: inline-flex; align-items: center; gap: 4px; padding: 3px 10px; border-radius: var(--radius-full); font-size: 0.78rem; font-weight: 600; }
.badge-success { background: rgba(16, 185, 129, 0.12); color: var(--success); }
.badge-danger { background: rgba(239, 68, 68, 0.12); color: var(--danger); }
.badge-warning { background: rgba(245, 158, 11, 0.12); color: var(--warning); }
.badge-info { background: rgba(59, 130, 246, 0.12); color: var(--info); }
.badge-primary { background: rgba(10, 124, 90, 0.12); color: var(--primary); }

.section { padding: var(--space-12) 0; }
.section-title { font-size: 2.25rem; font-weight: 800; margin-bottom: var(--space-3); letter-spacing: -0.02em; }
.section-subtitle { font-size: 1.1rem; color: var(--text-secondary); margin-bottom: var(--space-8); max-width: 640px; }
.text-center { text-align: center; }
.text-gradient { background: var(--gradient-primary); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

/* ---------- Hero ---------- */
.hero { background: var(--gradient-hero); color: white; padding: var(--space-12) 0 var(--space-10); position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; top: -50%; right: -10%; width: 600px; height: 600px; background: radial-gradient(circle, rgba(255,255,255,0.12) 0%, transparent 70%); border-radius: 50%; }
.hero-content { position: relative; z-index: 1; max-width: 720px; }
.hero h1 { font-size: 3rem; font-weight: 800; line-height: 1.15; letter-spacing: -0.02em; margin-bottom: var(--space-5); }
.hero p { font-size: 1.2rem; opacity: 0.92; margin-bottom: var(--space-6); max-width: 580px; }
.hero-actions { display: flex; gap: var(--space-4); flex-wrap: wrap; }
.hero .btn-outline { border-color: rgba(255,255,255,0.4); color: white; }
.hero .btn-outline:hover { background: rgba(255,255,255,0.12); border-color: white; }
.hero-stats { display: flex; gap: var(--space-8); margin-top: var(--space-10); flex-wrap: wrap; }
.hero-stat .num { font-size: 2rem; font-weight: 800; font-family: var(--font-mono); }
.hero-stat .label { font-size: 0.9rem; opacity: 0.85; }

/* ---------- 网格 ---------- */
.grid { display: grid; gap: var(--space-5); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ---------- 特性卡片 ---------- */
.feature-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md); padding: var(--space-6); transition: var(--transition); position: relative; overflow: hidden; }
.feature-card:hover { border-color: var(--primary-light); transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.feature-icon { width: 52px; height: 52px; border-radius: var(--radius); background: rgba(10, 124, 90, 0.1); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 1.5rem; margin-bottom: var(--space-4); }
.feature-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: var(--space-2); }
.feature-card p { color: var(--text-secondary); font-size: 0.95rem; }

/* ---------- 表单 ---------- */
.form-group { margin-bottom: var(--space-4); }
.form-label { display: block; margin-bottom: var(--space-2); font-weight: 600; font-size: 0.9rem; color: var(--text); }
.form-input, .form-select, .form-textarea {
  width: 100%; padding: 0.7rem 1rem; border: 1.5px solid var(--border);
  border-radius: var(--radius); background: var(--surface); color: var(--text);
  transition: var(--transition); font-size: 0.95rem;
}
.form-input:focus, .form-select:focus, .form-textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(10, 124, 90, 0.12); }
.form-hint { font-size: 0.82rem; color: var(--text-muted); margin-top: var(--space-1); }
.form-error { font-size: 0.82rem; color: var(--danger); margin-top: var(--space-1); display: none; }
.form-input.is-invalid { border-color: var(--danger); }
.form-input.is-invalid + .form-error { display: block; }

/* ---------- 认证页面 ---------- */
.auth-wrap { min-height: calc(100vh - var(--header-h)); display: grid; grid-template-columns: 1fr 1fr; }
.auth-aside { background: var(--gradient-dark); color: white; padding: var(--space-10); display: flex; flex-direction: column; justify-content: center; position: relative; overflow: hidden; }
.auth-aside::before { content: ""; position: absolute; bottom: -30%; left: -20%; width: 500px; height: 500px; background: radial-gradient(circle, rgba(16,185,129,0.25) 0%, transparent 70%); border-radius: 50%; }
.auth-aside-content { position: relative; z-index: 1; max-width: 420px; }
.auth-aside h2 { font-size: 2rem; font-weight: 800; margin-bottom: var(--space-4); line-height: 1.2; }
.auth-aside p { opacity: 0.85; margin-bottom: var(--space-6); }
.auth-aside ul li { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-2) 0; opacity: 0.95; }
.auth-aside ul li::before { content: "✓"; width: 24px; height: 24px; border-radius: 50%; background: rgba(16,185,129,0.25); display: inline-flex; align-items: center; justify-content: center; font-size: 0.85rem; flex-shrink: 0; }
.auth-main { display: flex; align-items: center; justify-content: center; padding: var(--space-8) var(--space-5); background: var(--bg); }
.auth-card { width: 100%; max-width: 420px; }
.auth-card h1 { font-size: 1.75rem; font-weight: 800; margin-bottom: var(--space-2); }
.auth-card .sub { color: var(--text-secondary); margin-bottom: var(--space-6); }
.auth-footer { text-align: center; margin-top: var(--space-5); font-size: 0.9rem; color: var(--text-secondary); }
.auth-footer a { color: var(--primary); font-weight: 600; }

/* ---------- 仪表盘 ---------- */
.dash-layout { display: grid; grid-template-columns: 240px 1fr; min-height: calc(100vh - var(--header-h)); }
.sidebar { background: var(--surface); border-right: 1px solid var(--border); padding: var(--space-5) var(--space-3); position: sticky; top: var(--header-h); height: calc(100vh - var(--header-h)); overflow-y: auto; }
.sidebar-section { margin-bottom: var(--space-5); }
.sidebar-title { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-muted); padding: 0 var(--space-3); margin-bottom: var(--space-2); font-weight: 700; }
.sidebar-link { display: flex; align-items: center; gap: var(--space-3); padding: 0.6rem var(--space-3); border-radius: var(--radius); color: var(--text-secondary); font-size: 0.92rem; font-weight: 500; transition: var(--transition); }
.sidebar-link:hover { background: var(--surface-hover); color: var(--text); }
.sidebar-link.active { background: rgba(10,124,90,0.1); color: var(--primary); font-weight: 600; }
.sidebar-link .icon { width: 20px; text-align: center; font-size: 1.05rem; }
.dash-main { padding: var(--space-6) var(--space-6); background: var(--bg); min-width: 0; }
.dash-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-6); flex-wrap: wrap; gap: var(--space-3); }
.dash-title h1 { font-size: 1.6rem; font-weight: 800; }
.dash-title p { color: var(--text-secondary); font-size: 0.92rem; }

/* ---------- 统计卡片 ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-4); margin-bottom: var(--space-6); }
.stat-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md); padding: var(--space-5); box-shadow: var(--shadow-sm); }
.stat-card .label { font-size: 0.82rem; color: var(--text-muted); margin-bottom: var(--space-2); display: flex; align-items: center; gap: var(--space-2); }
.stat-card .value { font-size: 1.75rem; font-weight: 800; font-family: var(--font-mono); letter-spacing: -0.02em; }
.stat-card .change { font-size: 0.85rem; margin-top: var(--space-1); font-weight: 600; }
.change.up { color: var(--success); }
.change.down { color: var(--danger); }

/* ---------- 市场数据表 ---------- */
.market-table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.market-table th { text-align: left; padding: var(--space-3) var(--space-4); background: var(--bg-alt); color: var(--text-muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; border-bottom: 1px solid var(--border); }
.market-table th:first-child { border-top-left-radius: var(--radius); }
.market-table th:last-child { border-top-right-radius: var(--radius); }
.market-table td { padding: var(--space-4); border-bottom: 1px solid var(--border); }
.market-table tbody tr:hover { background: var(--surface-hover); }
.market-table tbody tr:last-child td { border-bottom: none; }
.ticker { display: flex; align-items: center; gap: var(--space-3); }
.ticker-icon { width: 36px; height: 36px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; color: white; font-weight: 700; font-size: 0.8rem; }
.ticker-name { font-weight: 600; display: flex; align-items: center; gap: 6px; }

/* 数据来源徽章 */
.src-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  line-height: 1;
}
.src-badge.src-real { background: rgba(16, 185, 129, 0.15); color: #10b981; }
.src-badge.src-demo { background: rgba(156, 163, 175, 0.2); color: #9ca3af; }
.src-badge.src-est { background: rgba(245, 158, 11, 0.15); color: #f59e0b; }

.ticker-symbol { font-size: 0.8rem; color: var(--text-muted); }
.price { font-family: var(--font-mono); font-weight: 600; }
.pulse-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--success); animation: pulse 1.5s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.5; transform: scale(1.3); } }

/* ---------- 图表 ---------- */
.chart-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md); padding: var(--space-5); box-shadow: var(--shadow-sm); }
.chart-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-4); }
.chart-header h3 { font-size: 1.1rem; font-weight: 700; }
.chart-canvas { width: 100%; height: 320px; background: linear-gradient(180deg, transparent 0%, rgba(10,124,90,0.03) 100%); border-radius: var(--radius); }

/* ---------- AI 分析 ---------- */
.ai-panel { background: var(--gradient-dark); color: white; border-radius: var(--radius-lg); padding: var(--space-8); position: relative; overflow: hidden; }
.ai-panel::before { content: ""; position: absolute; top: -40%; right: -10%; width: 400px; height: 400px; background: radial-gradient(circle, rgba(16,185,129,0.3) 0%, transparent 70%); border-radius: 50%; }
.ai-panel-content { position: relative; z-index: 1; }
.ai-tag { display: inline-flex; align-items: center; gap: 6px; padding: 4px 12px; background: rgba(16,185,129,0.2); color: var(--primary-light); border-radius: var(--radius-full); font-size: 0.82rem; font-weight: 600; margin-bottom: var(--space-3); }
.ai-suggestion { background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius); padding: var(--space-4); margin-top: var(--space-3); }
.ai-suggestion-header { display: flex; align-items: center; gap: var(--space-2); font-weight: 600; margin-bottom: var(--space-2); }

/* ---------- 教育资源 ---------- */
.edu-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; transition: var(--transition); cursor: pointer; }
.edu-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.edu-card-thumb { height: 160px; background: var(--gradient-primary); display: flex; align-items: center; justify-content: center; color: white; font-size: 2.5rem; position: relative; }
.edu-card-thumb::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 50%, rgba(0,0,0,0.2) 100%); }
.edu-card-body { padding: var(--space-5); }
.edu-card-tag { font-size: 0.78rem; color: var(--primary); font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: var(--space-2); }
.edu-card-body h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: var(--space-2); line-height: 1.35; }
.edu-card-body p { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: var(--space-3); }
.edu-card-meta { display: flex; align-items: center; justify-content: space-between; font-size: 0.82rem; color: var(--text-muted); }

/* ---------- 定价 ---------- */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-5); align-items: stretch; }
.price-card { background: var(--surface); border: 1.5px solid var(--border); border-radius: var(--radius-lg); padding: var(--space-6); display: flex; flex-direction: column; position: relative; transition: var(--transition); }
.price-card:hover { border-color: var(--primary-light); transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.price-card.featured { border-color: var(--primary); box-shadow: var(--shadow-md); }
.price-card.featured::before { content: "推荐"; position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--gradient-primary); color: white; padding: 4px 16px; border-radius: var(--radius-full); font-size: 0.78rem; font-weight: 700; }
.price-card .plan-name { font-size: 1.15rem; font-weight: 700; margin-bottom: var(--space-2); }
.price-card .plan-desc { color: var(--text-secondary); font-size: 0.88rem; margin-bottom: var(--space-4); }
.price-card .plan-price { display: flex; align-items: baseline; gap: 4px; margin-bottom: var(--space-5); }
.price-card .amount { font-size: 2.5rem; font-weight: 800; font-family: var(--font-mono); letter-spacing: -0.02em; }
.price-card .period { color: var(--text-muted); font-size: 0.95rem; }
.price-card ul { margin-bottom: var(--space-5); flex: 1; }
.price-card ul li { display: flex; align-items: flex-start; gap: var(--space-2); padding: var(--space-2) 0; font-size: 0.92rem; color: var(--text-secondary); }
.price-card ul li::before { content: "✓"; color: var(--primary); font-weight: 800; flex-shrink: 0; }

/* ---------- 页脚 ---------- */
.site-footer { background: #0f172a; color: #cbd5e1; padding: var(--space-10) 0 var(--space-5); margin-top: var(--space-12); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--space-8); margin-bottom: var(--space-8); }
.footer-brand p { color: #94a3b8; font-size: 0.92rem; margin-top: var(--space-3); max-width: 320px; }
.footer-col h4 { color: white; font-size: 1rem; margin-bottom: var(--space-4); font-weight: 700; }
.footer-col a { display: block; color: #94a3b8; font-size: 0.9rem; padding: var(--space-1) 0; }
.footer-col a:hover { color: white; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: var(--space-5); display: flex; justify-content: space-between; align-items: center; font-size: 0.85rem; color: #94a3b8; flex-wrap: wrap; gap: var(--space-3); }
.footer-disclaimer { background: rgba(245, 158, 11, 0.08); border: 1px solid rgba(245, 158, 11, 0.2); border-radius: var(--radius); padding: var(--space-4); margin-bottom: var(--space-6); font-size: 0.85rem; color: #cbd5e1; }

/* ---------- Toast ---------- */
.toast-container { position: fixed; top: calc(var(--header-h) + 16px); right: 16px; z-index: 2000; display: flex; flex-direction: column; gap: var(--space-2); }
.toast { background: var(--surface); border: 1px solid var(--border); border-left: 4px solid var(--primary); padding: var(--space-3) var(--space-4); border-radius: var(--radius); box-shadow: var(--shadow-lg); display: flex; align-items: center; gap: var(--space-3); min-width: 280px; max-width: 380px; animation: slideIn 0.3s ease; font-size: 0.9rem; }
.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }
.toast.warning { border-left-color: var(--warning); }
@keyframes slideIn { from { transform: translateX(120%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* ---------- 标签栏 ---------- */
.tabs { display: flex; gap: var(--space-1); border-bottom: 2px solid var(--border); margin-bottom: var(--space-5); }
.tab { padding: var(--space-3) var(--space-4); font-weight: 600; color: var(--text-muted); border-bottom: 2px solid transparent; margin-bottom: -2px; transition: var(--transition); cursor: pointer; font-size: 0.92rem; }
.tab:hover { color: var(--text); }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); }
.tab-content { display: none; }
.tab-content.active { display: block; animation: fadeIn 0.3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* ---------- 滚动行情条 ---------- */
.ticker-bar { background: #0f172a; color: white; padding: var(--space-2) 0; overflow: hidden; white-space: nowrap; font-size: 0.85rem; }
.ticker-track { display: inline-flex; gap: var(--space-8); animation: scrollTicker 40s linear infinite; padding-left: 100%; }
.ticker-item { display: inline-flex; align-items: center; gap: var(--space-2); font-family: var(--font-mono); }
.ticker-item .sym { color: #94a3b8; }
.ticker-item .up { color: var(--success); }
.ticker-item .down { color: var(--danger); }
@keyframes scrollTicker { from { transform: translateX(0); } to { transform: translateX(-100%); } }

/* ---------- 风险仪表 ---------- */
.risk-meter { height: 10px; background: var(--bg-alt); border-radius: var(--radius-full); overflow: hidden; margin: var(--space-2) 0; }
.risk-meter-fill { height: 100%; background: linear-gradient(90deg, var(--success) 0%, var(--warning) 50%, var(--danger) 100%); border-radius: var(--radius-full); transition: width 0.6s ease; }

.menu-toggle { display: none; width: 40px; height: 40px; border-radius: var(--radius-sm); align-items: center; justify-content: center; font-size: 1.4rem; color: var(--text); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .price-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .hero h1 { font-size: 2.4rem; }
}
@media (max-width: 768px) {
  .nav-links { display: none; position: absolute; top: var(--header-h); left: 0; right: 0; background: var(--surface); flex-direction: column; align-items: stretch; padding: var(--space-4); border-bottom: 1px solid var(--border); box-shadow: var(--shadow-lg); }
  .nav-links.open { display: flex; }
  .nav-links a { padding: var(--space-3); border-radius: var(--radius); }
  .nav-links a.active::after { display: none; }
  .menu-toggle { display: flex; }
  .auth-wrap { grid-template-columns: 1fr; }
  .auth-aside { display: none; }
  .dash-layout { grid-template-columns: 1fr; }
  .sidebar { position: fixed; top: var(--header-h); left: 0; width: 260px; z-index: 900; transform: translateX(-100%); transition: transform 0.3s ease; box-shadow: var(--shadow-lg); }
  .sidebar.open { transform: translateX(0); }
  .dash-main { padding: var(--space-4); }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1rem; }
  .section-title { font-size: 1.75rem; }
  .section { padding: var(--space-8) 0; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-5); }
  .market-table { font-size: 0.85rem; }
  .market-table th, .market-table td { padding: var(--space-2) var(--space-3); }
  .hide-mobile { display: none; }
}
@media (max-width: 480px) {
  .container, .container-wide { padding: 0 var(--space-4); }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .nav-actions .btn-outline { display: none; }
}

/* ---------- 工具类 ---------- */
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.text-sm { font-size: 0.875rem; }
.text-muted { color: var(--text-muted); }
.font-mono { font-family: var(--font-mono); }
.fw-700 { font-weight: 700; }