/* ══════════════════════════════════════════════════════════════
   index.css  ──  Landing page 专用样式（index.php only）
   不影响 app.php / admin.php 等共享 style.css 的页面
══════════════════════════════════════════════════════════════ */


    /* ─── RESET & VARIABLES ─── */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    :root {
      --blue-core: #0A84FF;
      --blue-light: #3FA3FF;
      --blue-glow: rgba(10,132,255,0.35);
      --blue-dim: rgba(10,132,255,0.12);
      --black: #050508;
      --surface: #0C0D12;
      --surface-2: #13141C;
      --surface-3: #1A1C28;
      --border: rgba(255,255,255,0.07);
      --border-blue: rgba(10,132,255,0.25);
      --text-primary: #EEEEF2;
      --text-secondary: #8A8BA0;
      --text-muted: #4E4F62;
      --font-display: 'Syne', sans-serif;
      --font-body: 'DM Sans', sans-serif;
      --radius: 16px;
      --radius-sm: 8px;
      --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
    }

    /* ─── LIGHT MODE VARIABLES ─── */
    body.light {
      --blue-core: #0070E0;
      --blue-light: #0070E0;
      --blue-glow: rgba(0,112,224,0.22);
      --blue-dim: rgba(0,112,224,0.08);
      --black: #EFF1F8;
      --surface: #FFFFFF;
      --surface-2: #F4F6FC;
      --surface-3: #EAEDf7;
      --border: rgba(0,0,0,0.09);
      --border-blue: rgba(0,112,224,0.20);
      --text-primary: #0C0D14;
      --text-secondary: #454762;
      --text-muted: #8587A2;
    }

    /* Light mode contextual tweaks */
    body.light nav {
      background: rgba(239,241,248,0.85);
      border-bottom-color: rgba(0,0,0,0.08);
    }
    body.light .nav-links.open {
      background: rgba(239,241,248,0.98);
      border-bottom-color: rgba(0,0,0,0.08);
    }
    body.light .hero-bg::before {
      background-image:
        linear-gradient(rgba(0,0,0,0.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,0,0,0.045) 1px, transparent 1px);
    }
    body.light .hero-bg::after {
      background: radial-gradient(ellipse, rgba(0,112,224,0.09) 0%, transparent 70%);
    }
    body.light .mockup-frame {
      border-color: rgba(0,0,0,0.1);
      box-shadow: 0 0 0 1px rgba(0,112,224,0.07), 0 32px 80px rgba(0,0,0,0.10);
    }
    body.light .mockup-glow {
      background: radial-gradient(ellipse, rgba(0,112,224,0.10), transparent 70%);
    }
    body.light .btn-secondary {
      border-color: rgba(0,0,0,0.14);
      color: var(--text-secondary);
    }
    body.light .btn-secondary:hover {
      border-color: rgba(0,0,0,0.24);
      color: var(--text-primary);
    }
    body.light .task-check { border-color: rgba(0,0,0,0.16); }
    body.light .usp-flow::before {
      background: linear-gradient(90deg, var(--blue-core), rgba(0,112,224,0.2), var(--blue-core));
    }
    body.light .cta-block::before {
      background: radial-gradient(ellipse, rgba(0,112,224,0.06), transparent 70%);
    }
    body.light .cta-block { border-bottom-color: rgba(0,0,0,0.09); }
    body.light .footer-bottom { border-top-color: rgba(0,0,0,0.09); }

    /* ─── THEME TOGGLE BUTTON ─── */
    .theme-toggle {
      position: relative;
      width: 52px;
      height: 28px;
      flex-shrink: 0;
    }
    .theme-toggle input {
      opacity: 0; width: 0; height: 0;
      position: absolute;
    }
    .toggle-track {
      position: absolute;
      inset: 0;
      border-radius: 50px;
      background: var(--surface-3);
      border: 1px solid var(--border);
      cursor: pointer;
      transition: background var(--transition), border-color var(--transition);
      display: flex;
      align-items: center;
      padding: 0 6px;
      justify-content: space-between;
    }
    .toggle-track:hover { border-color: var(--border-blue); }
    .toggle-icon {
      pointer-events: none;
      position: relative;
      z-index: 1;
      flex-shrink: 0;
      font-size: 10px;
      line-height: 1;
      display: block;
    }
    .toggle-thumb {
      position: absolute;
      width: 20px; height: 20px;
      border-radius: 50%;
      background: var(--blue-core);
      box-shadow: 0 0 8px var(--blue-glow);
      top: 3px; left: 3px;
      transition: transform 0.35s cubic-bezier(0.4,0,0.2,1),
                  background var(--transition), box-shadow var(--transition);
      pointer-events: none;
    }
    /* unchecked = light (thumb left, covers ☀️ — sun is active/selected)
       checked   = dark  (thumb right, covers 🌙 — moon is active/selected) */
    .theme-toggle input:checked ~ .toggle-track .toggle-thumb {
      transform: translateX(24px);
    }
    body.light .toggle-track { background: #E3E7F2; }

    html { scroll-behavior: smooth; }

    body {
      background: var(--black);
      color: var(--text-primary);
      font-family: var(--font-body);
      font-size: 16px;
      line-height: 1.65;
      overflow-x: hidden;
      transition: background 0.4s ease, color 0.4s ease;
    }

    /* ─── NAV ─── */
    nav {
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 100;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 20px 60px;
      background: rgba(5,5,8,0.7);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--border);
      transition: padding var(--transition);
    }

    .nav-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      text-decoration: none;
    }

    .nav-logo-icon {
      width: 34px; height: 34px;
      background: var(--blue-core);
      border-radius: 9px;
      display: grid;
      place-items: center;
      box-shadow: 0 0 20px var(--blue-glow);
    }

    .nav-logo-icon svg { width: 18px; height: 18px; }

    .nav-logo-text {
      font-family: var(--font-display);
      font-size: 18px;
      font-weight: 800;
      letter-spacing: 0.12em;
      color: var(--text-primary);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 36px;
      list-style: none;
    }

    .nav-links a {
      color: var(--text-secondary);
      text-decoration: none;
      font-size: 14px;
      font-weight: 400;
      letter-spacing: 0.02em;
      transition: color var(--transition);
    }

    .nav-links a:hover { color: var(--text-primary); }

    .nav-cta {
      background: var(--blue-core);
      color: #fff !important;
      padding: 9px 22px;
      border-radius: 50px;
      font-weight: 500 !important;
      font-size: 13px !important;
      transition: box-shadow var(--transition), transform var(--transition) !important;
    }

    .nav-cta:hover {
      box-shadow: 0 0 28px var(--blue-glow) !important;
      transform: translateY(-1px);
    }

    .nav-hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      padding: 4px;
    }

    .nav-hamburger span {
      display: block;
      width: 24px; height: 2px;
      background: var(--text-secondary);
      border-radius: 2px;
      transition: var(--transition);
    }

    /* ─── HERO ─── */
    #hero {
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 140px 60px 80px;
      position: relative;
      overflow: hidden;
    }

    .hero-bg {
      position: absolute;
      inset: 0;
      pointer-events: none;
      z-index: 0;
    }

    /* Grid lines */
    .hero-bg::before {
      content: '';
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
      background-size: 80px 80px;
      mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 80%);
    }

    /* Glow orb */
    .hero-bg::after {
      content: '';
      position: absolute;
      top: -10%; left: 50%;
      transform: translateX(-50%);
      width: 700px; height: 500px;
      background: radial-gradient(ellipse, rgba(10,132,255,0.18) 0%, transparent 70%);
      filter: blur(40px);
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      border-radius: 50px;
      background: var(--blue-dim);
      border: 1px solid var(--border-blue);
      font-size: 12px;
      font-weight: 500;
      color: var(--blue-light);
      letter-spacing: 0.06em;
      text-transform: uppercase;
      margin-bottom: 32px;
      position: relative;
      z-index: 1;
      animation: fadeUp 0.8s ease both;
    }

    .hero-badge-dot {
      width: 6px; height: 6px;
      border-radius: 50%;
      background: var(--blue-core);
      box-shadow: 0 0 8px var(--blue-core);
      animation: pulse 2s ease infinite;
    }

    @keyframes pulse {
      0%, 100% { opacity: 1; }
      50% { opacity: 0.4; }
    }

    .hero-title {
      font-family: var(--font-display);
      font-size: clamp(40px, 6vw, 80px);
      font-weight: 800;
      line-height: 1.08;
      letter-spacing: -0.02em;
      text-align: center;
      max-width: 820px;
      position: relative;
      z-index: 1;
      animation: fadeUp 0.8s 0.1s ease both;
    }

    .hero-title .accent {
      color: var(--blue-core);
      position: relative;
      display: inline-block;
      white-space: nowrap;   /* 防止"钉进每一天"被折断换行 */
      text-decoration: none;
    }

    /* 设计特效下划线 */
    .hero-title .accent::after {
      content: '';
      position: absolute;
      left: 0; bottom: 2px;
      width: 100%; height: 2px;
      background: linear-gradient(90deg, var(--blue-core) 60%, transparent);
    }

    .hero-subtitle {
      margin-top: 24px;
      font-size: 18px;
      color: var(--text-secondary);
      text-align: center;
      max-width: 520px;
      line-height: 1.7;
      font-weight: 300;
      position: relative;
      z-index: 1;
      animation: fadeUp 0.8s 0.2s ease both;
    }

    .hero-actions {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-top: 44px;
      position: relative;
      z-index: 1;
      animation: fadeUp 0.8s 0.3s ease both;
    }

    .btn-primary {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: var(--blue-core);
      color: #fff;
      text-decoration: none;
      padding: 14px 32px;
      border-radius: 50px;
      font-size: 15px;
      font-weight: 500;
      letter-spacing: 0.01em;
      border: none;
      cursor: pointer;
      transition: box-shadow var(--transition), transform var(--transition);
      box-shadow: 0 0 0 rgba(10,132,255,0);
    }

    .btn-primary:hover {
      box-shadow: 0 0 40px var(--blue-glow);
      transform: translateY(-2px);
    }

    .btn-primary svg { width: 16px; height: 16px; }

    .btn-secondary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--text-secondary);
      text-decoration: none;
      padding: 14px 28px;
      border-radius: 50px;
      font-size: 15px;
      font-weight: 400;
      border: 1px solid var(--border);
      background: transparent;
      cursor: pointer;
      transition: color var(--transition), border-color var(--transition), transform var(--transition);
    }

    .btn-secondary:hover {
      color: var(--text-primary);
      border-color: rgba(255,255,255,0.15);
      transform: translateY(-2px);
    }

    /* ─── PRODUCT MOCKUP ─── */
    .hero-mockup {
      margin-top: 72px;
      position: relative;
      z-index: 1;
      width: 100%;
      max-width: 960px;
      animation: fadeUp 0.8s 0.4s ease both;
    }

    .mockup-glow {
      position: absolute;
      top: 50%; left: 50%;
      transform: translate(-50%,-50%);
      width: 600px; height: 200px;
      background: radial-gradient(ellipse, rgba(10,132,255,0.25), transparent 70%);
      filter: blur(30px);
      pointer-events: none;
    }

    .mockup-frame {
      background: var(--surface);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: 20px;
      overflow: hidden;
      box-shadow:
        0 0 0 1px rgba(10,132,255,0.1),
        0 40px 120px rgba(0,0,0,0.8),
        0 0 80px rgba(10,132,255,0.08);
      position: relative;
    }

    .mockup-topbar {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 14px 20px;
      border-bottom: 1px solid var(--border);
      background: var(--surface-2);
    }

    .mockup-dot {
      width: 12px; height: 12px;
      border-radius: 50%;
    }

    .mockup-dot:nth-child(1) { background: #FF5F57; }
    .mockup-dot:nth-child(2) { background: #FEBC2E; }
    .mockup-dot:nth-child(3) { background: #28C840; }

    .mockup-title-bar {
      flex: 1;
      text-align: center;
      font-size: 12px;
      color: var(--text-muted);
      letter-spacing: 0.05em;
    }

    /* ── Mockup 内部：多视图布局 ── */
    .mockup-body {
      display: flex;
      height: 500px;
    }

    /* 左侧导航 */
    .mockup-nav {
      width: 180px;
      flex-shrink: 0;
      background: var(--surface-2);
      border-right: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      padding: 16px 10px 12px;
      gap: 2px;
    }
    .mnav-brand {
      display: flex; align-items: center; gap: 7px;
      padding: 0 6px 12px;
      border-bottom: 1px solid var(--border);
      margin-bottom: 8px;
    }
    .mnav-brand-icon {
      width: 24px; height: 24px;
      background: var(--blue-core); border-radius: 7px;
      display: flex; align-items: center; justify-content: center; flex-shrink: 0;
    }
    .mnav-brand-icon svg { width: 13px; height: 13px; color: #fff; }
    .mnav-brand-name { font-size: 12px; font-weight: 700; color: var(--text-primary); }
    .mnav-item {
      display: flex; align-items: center; gap: 8px;
      padding: 7px 9px; border-radius: 8px;
      font-size: 12px; color: var(--text-secondary); cursor: pointer;
      transition: background var(--transition), color var(--transition);
    }
    .mnav-item:hover { background: var(--surface-3); color: var(--text-primary); }
    .mnav-item.active { background: var(--blue-dim); color: var(--blue-light); border: 1px solid var(--border-blue); }
    .mnav-item svg { width: 14px; height: 14px; flex-shrink: 0; }
    .mnav-divider { height: 1px; background: var(--border); margin: 6px 0; }

    /* 右侧内容区 */
    .mockup-content {
      flex: 1; min-width: 0;
      position: relative;
      overflow: hidden;
    }

    /* 视图面板 */
    .mv-panel {
      position: absolute; inset: 0;
      opacity: 0; pointer-events: none;
      transition: opacity 0.3s ease;
      overflow: hidden;
    }
    .mv-panel.active { opacity: 1; pointer-events: all; }

    /* 视图通用头部 */
    .mv-header {
      display: flex; align-items: center; justify-content: space-between;
      padding: 16px 20px 10px;
    }
    .mv-title {
      font-size: 1.125rem; font-weight: 700; color: var(--text-primary);
      display: flex; align-items: center; gap: 8px;
    }
    .mv-title svg { width: 17px; height: 17px; color: var(--blue-core); }
    .mv-nav-btns { display: flex; gap: 5px; }
    .mv-nav-btn {
      width: 26px; height: 26px; border-radius: 7px;
      border: 1px solid var(--border); background: var(--surface-2);
      color: var(--text-secondary); display: flex; align-items: center; justify-content: center; cursor: pointer;
    }
    .mv-nav-btn svg { width: 12px; height: 12px; }

    /* ── 月视图 ── */
    #mv-month { padding: 0 16px 12px; display: flex; flex-direction: column; gap: 6px; }
    .mv-month-wds { display: grid; grid-template-columns: repeat(7,1fr); gap: 1px; }
    .mv-wd { text-align: center; font-size: 9.5px; font-weight: 600; color: var(--text-muted); padding: 4px 0; text-transform: uppercase; letter-spacing: 0.04em; }
    .mv-month-days { display: grid; grid-template-columns: repeat(7,1fr); gap: 2px; }
    .mv-cell {
      min-height: 62px; padding: 5px 5px; border: 1px solid var(--border);
      border-radius: 6px; background: var(--surface-2); font-size: 10px;
    }
    .mv-cell.today { border-color: var(--border-blue); background: var(--blue-dim); }
    .mv-cell.dim { opacity: 0.38; }
    .mv-cnum {
      font-size: 10.5px; font-weight: 600; color: var(--text-secondary); margin-bottom: 3px;
    }
    .mv-cell.today .mv-cnum {
      background: var(--blue-core); color: #fff;
      width: 17px; height: 17px; border-radius: 50%;
      display: flex; align-items: center; justify-content: center; font-size: 9.5px;
    }
    .mv-evt {
      font-size: 9px; padding: 1px 4px; border-radius: 3px;
      margin-bottom: 1px; overflow: hidden; white-space: nowrap; text-overflow: ellipsis;
    }
    .ev-a { background: rgba(10,132,255,0.15); color: #54AEFF; border-left: 2px solid #0A84FF; }
    .ev-b { background: rgba(191,90,242,0.13); color: #CF9FFF; border-left: 2px solid #BF5AF2; }
    .ev-c { background: rgba(48,209,88,0.13); color: #6EE89A; border-left: 2px solid #30D158; }
    .ev-d { background: rgba(255,159,10,0.13); color: #FFBE5C; border-left: 2px solid #FF9F0A; }

    /* ── 今天视图 ── */
    #mv-day { padding: 0 20px 12px; display: flex; flex-direction: column; gap: 7px; overflow-y: auto; }
    .mv-sched-item {
      display: flex; align-items: center; gap: 10px;
      padding: 9px 12px; background: var(--surface-2);
      border: 1px solid var(--border); border-radius: 9px;
    }
    .mv-check {
      width: 17px; height: 17px; border-radius: 50%; border: 1.5px solid var(--border); flex-shrink: 0;
      display: flex; align-items: center; justify-content: center;
    }
    .mv-check.done { background: var(--blue-core); border-color: var(--blue-core); }
    .mv-check.done::after { content:''; width:7px; height:4px; border-left:1.5px solid #fff; border-bottom:1.5px solid #fff; transform:rotate(-45deg) translateY(-1px); }
    .mv-sched-info { flex: 1; min-width: 0; }
    .mv-sched-title { font-size: 12px; font-weight: 600; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
    .mv-sched-title.done { text-decoration: line-through; color: var(--text-muted); }
    .mv-sched-meta { font-size: 10px; color: var(--text-muted); margin-top: 2px; }
    .mv-tag { font-size: 9.5px; padding: 2px 7px; border-radius: 20px; font-weight: 600; flex-shrink: 0; }
    .tg-green { background: rgba(48,209,88,0.13); color: #30D158; }
    .tg-blue  { background: rgba(10,132,255,0.12); color: #54AEFF; }
    .tg-orange{ background: rgba(255,159,10,0.12); color: #FF9F0A; }
    .tg-purple{ background: rgba(191,90,242,0.12); color: #CF9FFF; }

    /* ── OKR 视图 ── */
    #mv-okr { padding: 0 16px 12px; display: flex; flex-direction: column; gap: 10px; overflow-y: auto; }
    .mv-okr-obj { background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
    .mv-okr-head { display: flex; align-items: center; gap: 8px; padding: 10px 14px; border-bottom: 1px solid var(--border); }
    .mv-okr-icon { width: 26px; height: 26px; background: var(--blue-dim); border-radius: 7px; border: 1px solid var(--border-blue); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
    .mv-okr-icon svg { width: 13px; height: 13px; color: var(--blue-light); }
    .mv-okr-title { flex: 1; font-size: 12.5px; font-weight: 700; color: var(--text-primary); }
    .mv-okr-pct { font-size: 11px; color: var(--text-muted); flex-shrink: 0; }
    .mv-okr-pbar { height: 3px; background: var(--surface-3); }
    .mv-okr-pfill { height: 100%; background: linear-gradient(90deg, var(--blue-core), #54AEFF); }
    .mv-okr-krs { padding: 8px 14px; display: flex; flex-direction: column; gap: 6px; }
    .mv-kr { display: flex; align-items: center; gap: 8px; padding: 6px 8px; background: var(--surface-3); border-radius: 7px; }
    .mv-kr-wrap { flex: 1; min-width: 0; }
    .mv-kr-t { font-size: 11px; color: var(--text-secondary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-bottom: 3px; }
    .mv-kr-track { height: 4px; background: var(--surface-2); border-radius: 999px; overflow: hidden; }
    .mv-kr-fill { height: 100%; background: var(--blue-core); border-radius: 999px; }
    .mv-kr-pct { font-size: 10.5px; font-weight: 700; color: var(--blue-light); flex-shrink: 0; width: 28px; text-align: right; }

    /* ── 仪表盘视图 ── */
    #mv-dash { padding: 0 16px 12px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; overflow-y: auto; }
    .mv-dash-col { display: flex; flex-direction: column; gap: 8px; }
    .mv-dash-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 7px; border-bottom: 1px solid var(--border); }
    .mv-dash-title { display: flex; align-items: center; gap: 6px; font-size: 1.125rem; font-weight: 700; color: var(--text-primary); }
    .mv-dash-title svg { color: var(--blue-core); }
    .mv-goal-card { background: var(--surface-2); border: 1px solid var(--border); border-radius: 9px; padding: 10px 12px; }
    .mv-goal-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 6px; }
    .mv-goal-name { font-size: 11px; font-weight: 600; color: var(--text-primary); flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .mv-goal-pct { font-size: 12px; font-weight: 700; color: var(--blue-light); flex-shrink: 0; margin-left: 6px; }
    .mv-gtrack { height: 4px; background: var(--surface-3); border-radius: 999px; overflow: hidden; }
    .mv-gfill { height: 100%; background: linear-gradient(90deg, var(--blue-core), #54AEFF); border-radius: 999px; }
    .mv-goal-meta { font-size: 9.5px; color: var(--text-muted); margin-top: 5px; }
    .mv-timer-card { background: var(--surface-2); border: 1px solid var(--border); border-radius: 9px; padding: 10px 12px; display: flex; align-items: center; gap: 10px; }
    .mv-timer-ico { width: 32px; height: 32px; border-radius: 50%; background: rgba(191,90,242,0.1); border: 1px solid rgba(191,90,242,0.3); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
    .mv-timer-ico svg { width: 14px; height: 14px; color: var(--purple); }
    .mv-timer-info { flex: 1; min-width: 0; }
    .mv-timer-name { font-size: 11px; font-weight: 600; color: var(--text-primary); }
    .mv-timer-sub { font-size: 10px; color: var(--text-muted); margin-top: 2px; }
    .mv-timer-val { font-size: 16px; font-weight: 800; color: var(--purple); flex-shrink: 0; }
    .mv-pomo-row { display: flex; gap: 6px; }
    .mv-pomo-stat { flex: 1; background: var(--surface-2); border: 1px solid var(--border); border-radius: 9px; padding: 8px 10px; text-align: center; }
    .mv-pomo-val { font-size: 17px; font-weight: 800; color: var(--orange); }
    .mv-pomo-lbl { font-size: 9.5px; color: var(--text-muted); margin-top: 2px; }

    /* ── 底部切换标签（mockup 内） ── */
    .mockup-view-tabs {
      display: flex; align-items: center; gap: 2px;
      padding: 5px 10px 8px;
      background: var(--surface-2); border-top: 1px solid var(--border);
      position: absolute; bottom: 0; left: 0; right: 0;
    }
    .mockup-vtab {
      flex: 1; display: flex; flex-direction: column; align-items: center; gap: 2px;
      padding: 5px 3px 6px; border-radius: 7px; cursor: pointer;
      color: var(--text-muted); font-size: 9px; font-weight: 500;
      border: none; background: transparent; position: relative;
      transition: background var(--transition), color var(--transition);
    }
    .mockup-vtab:hover { background: var(--surface-3); color: var(--text-secondary); }
    .mockup-vtab.active { color: var(--blue-light); }
    .mockup-vtab svg { width: 15px; height: 15px; }
    .mockup-vtab-dot { position: absolute; bottom: 3px; width: 3px; height: 3px; border-radius: 50%; background: var(--blue-core); opacity: 0; transition: opacity var(--transition); }
    .mockup-vtab.active .mockup-vtab-dot { opacity: 1; }

    /* ─── SECTION COMMON ─── */
    section { padding: 120px 60px; }

    .section-label {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 11px;
      font-weight: 500;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: var(--blue-light);
      margin-bottom: 20px;
    }

    .section-label::before {
      content: '';
      display: block;
      width: 20px; height: 1px;
      background: var(--blue-core);
    }

    .section-title {
      font-family: var(--font-display);
      font-size: clamp(30px, 4vw, 52px);
      font-weight: 800;
      line-height: 1.12;
      letter-spacing: -0.02em;
    }

    .section-subtitle {
      margin-top: 16px;
      font-size: 17px;
      color: var(--text-secondary);
      max-width: 560px;
      line-height: 1.7;
      font-weight: 300;
    }

    /* ─── PROBLEM & SOLUTION ─── */
    #problem {
      background: var(--surface);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }

    .problem-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 80px;
      align-items: start;
      margin-top: 64px;
    }

    .problem-list { display: flex; flex-direction: column; gap: 20px; }

    .problem-card {
      display: flex;
      gap: 18px;
      padding: 24px;
      background: var(--surface-2);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
    }

    .problem-card:hover {
      border-color: rgba(255,255,255,0.18);
      transform: translateY(-3px);
      box-shadow: 0 8px 32px rgba(0,0,0,0.35);
    }

    body.light .problem-card:hover {
      border-color: rgba(0,112,224,0.35);
      transform: translateY(-3px);
      box-shadow: 0 8px 28px rgba(0,112,224,0.12);
    }

    .problem-icon {
      width: 42px; height: 42px;
      border-radius: 12px;
      background: rgba(255,59,48,0.12);
      border: 1px solid rgba(255,59,48,0.2);
      display: grid;
      place-items: center;
      flex-shrink: 0;
    }

    .problem-icon svg { width: 18px; height: 18px; color: #FF3B30; }

    .problem-card-title {
      font-family: var(--font-display);
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 6px;
    }

    .problem-card-text {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.65;
    }

    .solution-panel {
      position: sticky;
      top: 100px;
    }

    .solution-header {
      margin-bottom: 32px;
    }

    .solution-items { display: flex; flex-direction: column; gap: 16px; }

    .solution-item {
      display: flex;
      gap: 16px;
      align-items: flex-start;
      padding: 20px 24px;
      background: var(--surface-2);
      border: 1px solid var(--border-blue);
      border-radius: var(--radius);
      background: var(--blue-dim);
    }

    .solution-num {
      font-family: var(--font-display);
      font-size: 11px;
      font-weight: 700;
      color: var(--blue-core);
      background: var(--blue-dim);
      border: 1px solid var(--border-blue);
      width: 28px; height: 28px;
      border-radius: 8px;
      display: grid;
      place-items: center;
      flex-shrink: 0;
    }

    .solution-item-title {
      font-family: var(--font-display);
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 4px;
    }

    .solution-item-text {
      font-size: 13px;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* ─── USP ─── */
    #usp { background: var(--black); }

    .usp-header { max-width: 680px; margin-bottom: 72px; }

    .usp-flow {
      display: grid;
      grid-template-columns: repeat(4,1fr);
      gap: 12px;
      position: relative;
    }

    /* Connector line */
    .usp-flow::before {
      content: '';
      position: absolute;
      top: 48px;
      left: calc(12.5% + 4px);
      right: calc(12.5% + 4px);
      height: 1px;
      background: linear-gradient(90deg, var(--blue-core), rgba(10,132,255,0.3), var(--blue-core));
      z-index: 0;
    }

    .usp-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 36px 32px;
      position: relative;
      z-index: 1;
      overflow: hidden;
      transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
    }

    /* Hover glow sweep */
    .usp-card::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, var(--blue-dim) 0%, transparent 60%);
      opacity: 0;
      transition: opacity 0.3s ease;
      pointer-events: none;
      border-radius: var(--radius);
    }

    /* Top accent bar */
    .usp-card::after {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0;
      height: 2px;
      background: linear-gradient(90deg, transparent, var(--blue-core), transparent);
      transform: scaleX(0);
      transform-origin: center;
      transition: transform 0.35s ease;
      border-radius: 2px 2px 0 0;
    }

    .usp-card:hover {
      border-color: var(--border-blue);
      transform: translateY(-6px);
      box-shadow: 0 16px 48px rgba(0,0,0,0.4), 0 0 0 1px var(--border-blue);
    }

    .usp-card:hover::before { opacity: 1; }
    .usp-card:hover::after { transform: scaleX(1); }

    body.light .usp-card:hover {
      box-shadow: 0 12px 36px rgba(0,112,224,0.14), 0 0 0 1px var(--border-blue);
    }

    .usp-card:first-child { border-radius: var(--radius); }
    .usp-card:last-child { border-radius: var(--radius); }

    .usp-icon {
      width: 52px; height: 52px;
      background: var(--blue-dim);
      border: 1px solid var(--border-blue);
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 28px;
      flex-shrink: 0;
      overflow: hidden;
    }

    .usp-icon svg {
      width: 22px; height: 22px;
      color: var(--blue-core);
      display: block;
      flex-shrink: 0;
    }

    .usp-step-label {
      font-size: 10px;
      font-weight: 600;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--blue-core);
      margin-bottom: 8px;
    }

    .usp-card-title {
      font-family: var(--font-display);
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 14px;
    }

    .usp-card-text {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    .usp-features {
      margin-top: 20px;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .usp-feature {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--text-secondary);
    }

    .usp-feature::before {
      content: '';
      width: 5px; height: 5px;
      border-radius: 50%;
      background: var(--blue-core);
      flex-shrink: 0;
    }

    /* Extra feature strip */
    .usp-extras {
      display: grid;
      grid-template-columns: repeat(4,1fr);
      gap: 16px;
      margin-top: 24px;
    }

    .extra-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 24px;
      text-align: center;
      transition: border-color var(--transition);
    }

    .extra-card:hover { border-color: var(--border-blue); }

    .extra-icon {
      font-size: 28px;
      margin-bottom: 12px;
      display: block;
    }

    .extra-title {
      font-family: var(--font-display);
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 6px;
    }

    .extra-text { font-size: 13px; color: var(--text-muted); }

    /* ─── FOOTER / CTA ─── */
    #footer {
      background: var(--surface);
      border-top: 1px solid var(--border);
      padding: 0 60px;
    }

    .cta-block {
      text-align: center;
      padding: 100px 0 80px;
      border-bottom: 1px solid var(--border);
      position: relative;
      overflow: hidden;
    }

    .cta-block::before {
      content: '';
      position: absolute;
      top: 0; left: 50%;
      transform: translateX(-50%);
      width: 600px; height: 300px;
      background: radial-gradient(ellipse, rgba(10,132,255,0.14), transparent 70%);
      pointer-events: none;
    }

    .cta-title {
      font-family: var(--font-display);
      font-size: clamp(32px, 5vw, 60px);
      font-weight: 800;
      letter-spacing: -0.02em;
      line-height: 1.1;
      max-width: 700px;
      margin: 0 auto 24px;
      position: relative;
    }

    .cta-subtitle {
      font-size: 17px;
      color: var(--text-secondary);
      max-width: 440px;
      margin: 0 auto 44px;
      font-weight: 300;
    }

    .cta-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      position: relative;
    }

    .contact-strip {
      display: grid;
      grid-template-columns: repeat(3,1fr);
      gap: 0;
      padding: 48px 0;
    }

    .contact-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 12px;
      padding: 28px 24px;
      border-right: 1px solid var(--border);
      transition: background var(--transition);
    }

    .contact-item:last-child { border-right: none; }
    .contact-item:hover { background: var(--surface-2); }

    .contact-icon {
      width: 46px; height: 46px;
      background: var(--blue-dim);
      border: 1px solid var(--border-blue);
      border-radius: 12px;
      display: grid;
      place-items: center;
    }

    .contact-icon svg { width: 20px; height: 20px; color: var(--blue-core); }

    .contact-label {
      font-family: var(--font-display);
      font-size: 15px;
      font-weight: 600;
    }

    .contact-desc {
      font-size: 13px;
      color: var(--text-secondary);
      text-align: center;
      line-height: 1.6;
    }

    .contact-link {
      font-size: 13px;
      color: var(--blue-light);
      text-decoration: none;
      display: flex;
      align-items: center;
      gap: 4px;
      transition: gap var(--transition);
    }

    .contact-link:hover { gap: 8px; }

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 28px 0;
      border-top: 1px solid var(--border);
    }

    .footer-copy {
      font-size: 13px;
      color: var(--text-muted);
    }

    .footer-links {
      display: flex;
      gap: 28px;
      list-style: none;
    }

    .footer-links a {
      font-size: 13px;
      color: var(--text-muted);
      text-decoration: none;
      transition: color var(--transition);
    }

    .footer-links a:hover { color: var(--text-secondary); }

    /* ─── ANIMATIONS ─── */
    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(24px); }
      to { opacity: 1; transform: translateY(0); }
    }

    .reveal {
      opacity: 0;
      transform: translateY(30px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }

    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* ─── MOBILE ─── */
    @media (max-width: 900px) {
      nav { padding: 16px 24px; }

      .nav-links { display: none; }
      .nav-links.open {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 65px; left: 0; right: 0;
        background: rgba(5,5,8,0.98);
        backdrop-filter: blur(20px);
        padding: 28px 24px 32px;
        gap: 24px;
        border-bottom: 1px solid var(--border);
        z-index: 99;
      }

      .nav-links.open .nav-cta { align-self: flex-start; }
      .nav-hamburger { display: flex; }

      section { padding: 72px 24px; }

      #hero {
        padding: 120px 24px 60px;
        align-items: flex-start;
      }

      .hero-title { text-align: left; font-size: clamp(28px, 8.5vw, 52px); word-break: keep-all; }
      /* 移动端：accent 保持 nowrap，确保下划线可见 */
      .hero-title .accent {
        white-space: nowrap;
      }
      .hero-subtitle { text-align: left; max-width: 100%; }
      .hero-badge { align-self: flex-start; }

      .hero-actions {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
      }

      .btn-primary, .btn-secondary { width: 100%; justify-content: center; }

      .app-ui {
        grid-template-columns: 1fr;
        height: auto;
      }

      .app-sidebar { display: none; }

      .task-stats { grid-template-columns: repeat(2,1fr); }

      .problem-grid {
        grid-template-columns: 1fr;
        gap: 48px;
      }

      .solution-panel { position: static; }

      .usp-flow {
        grid-template-columns: 1fr;
        gap: 12px;
      }

      .usp-flow::before { display: none; }

      .usp-card:first-child, .usp-card:last-child {
        border-radius: var(--radius);
      }

      .usp-extras { grid-template-columns: repeat(2,1fr); }

      .contact-strip { grid-template-columns: 1fr; }
      .contact-item { border-right: none; border-bottom: 1px solid var(--border); }
      .contact-item:last-child { border-bottom: none; }

      .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
      }

      .footer-links { flex-wrap: wrap; justify-content: center; gap: 16px; }

      .cta-actions { flex-direction: column; align-items: center; }

      #footer { padding: 0 24px; }

      .cta-block { padding: 72px 0 60px; }
    }

    @media (max-width: 480px) {
      .usp-extras { grid-template-columns: 1fr; }
      .task-stats { grid-template-columns: repeat(3,1fr); }
      .stat-value { font-size: 18px; }
      /* 超窄屏继续缩小标题，确保 accent 不换行 */
      .hero-title { font-size: clamp(24px, 8.5vw, 40px); word-break: keep-all; }
    }

    /* ─── WECHAT MODAL ─── */
    .modal-overlay {
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.65);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      z-index: 1000;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 24px;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.3s ease;
    }
    .modal-overlay.open {
      opacity: 1;
      pointer-events: all;
    }
    .modal-box {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 24px;
      padding: 44px 40px 36px;
      max-width: 380px;
      width: 100%;
      position: relative;
      text-align: center;
      box-shadow: 0 40px 100px rgba(0,0,0,0.6), 0 0 0 1px var(--border-blue);
      transform: translateY(20px) scale(0.97);
      transition: transform 0.35s cubic-bezier(0.34,1.56,0.64,1), opacity 0.3s ease;
      opacity: 0;
    }
    .modal-overlay.open .modal-box {
      transform: translateY(0) scale(1);
      opacity: 1;
    }
    .modal-close {
      position: absolute;
      top: 16px; right: 16px;
      width: 32px; height: 32px;
      border-radius: 50%;
      background: var(--surface-3);
      border: 1px solid var(--border);
      cursor: pointer;
      display: grid;
      place-items: center;
      transition: background var(--transition), border-color var(--transition);
    }
    .modal-close:hover { background: var(--surface-2); border-color: var(--border-blue); }
    .modal-close svg { width: 14px; height: 14px; color: var(--text-muted); }
    .modal-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 5px 14px;
      border-radius: 50px;
      background: var(--blue-dim);
      border: 1px solid var(--border-blue);
      font-size: 11px;
      font-weight: 500;
      color: var(--blue-light);
      letter-spacing: 0.06em;
      text-transform: uppercase;
      margin-bottom: 18px;
    }
    .modal-badge-dot {
      width: 5px; height: 5px;
      border-radius: 50%;
      background: var(--blue-core);
      box-shadow: 0 0 6px var(--blue-core);
      animation: pulse 2s ease infinite;
    }
    .modal-title {
      font-family: var(--font-display);
      font-size: 22px;
      font-weight: 800;
      letter-spacing: -0.02em;
      margin-bottom: 8px;
      color: var(--text-primary);
    }
    .modal-desc {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.65;
      margin-bottom: 28px;
    }
    .modal-qr {
      width: 180px; height: 180px;
      margin: 0 auto 20px;
      border-radius: 16px;
      background: var(--surface-2);
      border: 1px solid var(--border);
      display: grid;
      place-items: center;
      position: relative;
      overflow: hidden;
    }
    /* Fake QR code pattern */
    .modal-qr-inner {
      width: 148px; height: 148px;
      position: relative;
    }
    .modal-qr-inner svg { width: 100%; height: 100%; }
    .modal-qr-label {
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 24px;
      letter-spacing: 0.02em;
    }
    .modal-hint {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-size: 12px;
      color: var(--text-muted);
      padding: 12px 16px;
      background: var(--surface-2);
      border-radius: 10px;
      border: 1px solid var(--border);
    }
    .modal-hint svg { width: 14px; height: 14px; color: var(--blue-light); flex-shrink: 0; }
    body.light .modal-box {
      box-shadow: 0 20px 60px rgba(0,112,224,0.12), 0 0 0 1px var(--border-blue);
    }
    .modal-qr-inner svg { color: var(--text-primary); }
    @media (max-width: 480px) {
      .modal-box { padding: 36px 24px 28px; border-radius: 20px; }
      .modal-title { font-size: 19px; }
      .modal-qr { width: 160px; height: 160px; }
      .modal-qr-inner { width: 130px; height: 130px; }
    }
    /* ─── AUTH BUTTON ─── */
    .nav-auth-btn {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 8px 18px;
      border-radius: 50px;
      font-size: 13px;
      font-weight: 500;
      color: var(--text-secondary);
      border: 1px solid var(--border);
      background: transparent;
      cursor: pointer;
      transition: color var(--transition), border-color var(--transition), background var(--transition);
      white-space: nowrap;
      font-family: var(--font-body);
    }
    .nav-auth-btn svg { width: 13px; height: 13px; flex-shrink: 0; }
    .nav-auth-btn:hover {
      color: var(--text-primary);
      border-color: var(--border-blue);
      background: var(--blue-dim);
    }
    body.light .nav-auth-btn { border-color: rgba(0,0,0,0.13); }
    body.light .nav-auth-btn:hover { border-color: var(--border-blue); }
    .nav-user-btn { display: flex; align-items: center; gap: 6px; }

    /* ─── 已登录用户下拉菜单 ─── */
    .nav-user-menu { position: relative; }
    .intro-dropdown {
      position: absolute;
      top: calc(100% + 8px);
      right: 0;
      min-width: 160px;
      background: var(--surface-2);
      border: 1px solid var(--border);
      border-radius: 12px;
      box-shadow: 0 8px 32px rgba(0,0,0,0.35);
      padding: 6px;
      opacity: 0;
      pointer-events: none;
      transform: translateY(-6px);
      transition: opacity 0.2s ease, transform 0.2s ease;
      z-index: 2000;
    }
    .intro-dropdown.open {
      opacity: 1;
      pointer-events: all;
      transform: translateY(0);
    }
    body.light .intro-dropdown {
      background: #fff;
      border-color: rgba(0,0,0,0.1);
      box-shadow: 0 8px 32px rgba(0,0,0,0.12);
    }
    .intro-dropdown-user {
      display: flex; align-items: center; gap: 8px;
      padding: 0.5rem 0.75rem;
      font-size: 0.82rem;
      color: var(--text-secondary);
      font-weight: 500;
    }
    .intro-dropdown-divider {
      height: 1px;
      background: var(--border);
      margin: 4px 0;
    }
    .intro-dropdown-item {
      display: flex; align-items: center; gap: 8px;
      width: 100%;
      padding: 0.55rem 0.75rem;
      border: none;
      border-radius: 8px;
      background: none;
      cursor: pointer;
      font-size: 0.82rem;
      color: var(--text-primary);
      font-family: var(--font-body);
      transition: background 0.15s;
      text-align: left;
    }
    .intro-dropdown-item:hover { background: var(--surface-3); }
    body.light .intro-dropdown-item:hover { background: rgba(0,0,0,0.05); }
    .intro-dropdown-danger { color: #ef4444 !important; }

    /* ─── CHANGE PASSWORD MODAL ─── */
    /* 与 app.php change-pwd-overlay 完全一致：display:none → display:flex */
    #introChangePwdModal {
      display: none;
      position: fixed;
      inset: 0;
      z-index: 9999;
      background: rgba(12,13,20,0.55);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      align-items: center;
      justify-content: center;
      padding: 24px;
    }
    #introChangePwdModal.open {
      display: flex;
      animation: fadeIn 0.18s ease-out;
    }
    #introChangePwdModal.open .auth-modal-box {
      animation: authSlideUp 0.35s cubic-bezier(0.34,1.56,0.64,1);
    }

    /* ─── AUTH MODAL ─── */
    .auth-modal-overlay {
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.65);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      z-index: 1001;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 24px;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.3s ease;
    }
    .auth-modal-overlay.open {
      opacity: 1;
      pointer-events: all;
    }
    .auth-box {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 24px;
      padding: 56px 36px 32px;
      max-width: 400px;
      width: 100%;
      position: relative;
      box-shadow: 0 40px 100px rgba(0,0,0,0.55), 0 0 0 1px var(--border-blue);
      transform: translateY(20px) scale(0.97);
      transition: transform 0.35s cubic-bezier(0.34,1.56,0.64,1), opacity 0.3s ease;
      opacity: 0;
    }
    .auth-modal-overlay.open .auth-box {
      transform: translateY(0) scale(1);
      opacity: 1;
    }
    body.light .auth-box {
      box-shadow: 0 20px 60px rgba(0,112,224,0.12), 0 0 0 1px var(--border-blue);
    }
    /* auth-modal-box：用于修改密码弹窗容器，与 app.php style.css 完全一致 */
    .auth-modal-box {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 24px;
      padding: 3rem 2.25rem 2.25rem;
      max-width: 400px;
      width: 100%;
      position: relative;
      box-shadow: 0 16px 48px rgba(0,0,0,0.18), 0 0 0 1px var(--border-blue);
      display: flex;
      flex-direction: column;
      gap: 0;
      animation: authSlideUp 0.35s cubic-bezier(0.34,1.56,0.64,1);
    }
    body.light .auth-modal-box {
      box-shadow: 0 8px 32px rgba(0,112,224,0.10), 0 0 0 1px var(--border-blue);
    }
    @keyframes authSlideUp {
      from { opacity: 0; transform: translateY(20px) scale(0.97); }
      to   { opacity: 1; transform: translateY(0) scale(1); }
    }
    @keyframes fadeIn {
      from { opacity: 0; }
      to   { opacity: 1; }
    }
    .auth-close {
      position: absolute;
      top: 14px; right: 14px;
      width: 32px; height: 32px;
      border-radius: 50%;
      background: var(--surface-2);
      border: 1px solid var(--border);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: background var(--transition), border-color var(--transition);
      z-index: 10;
      color: var(--text-secondary);
    }
    .auth-close:hover { background: var(--surface-3); border-color: var(--border-blue); }
    .auth-close svg { width: 14px; height: 14px; color: inherit; }

    /* Tab switcher */
    .auth-tabs {
      display: flex;
      background: var(--surface-2);
      border-radius: 12px;
      padding: 4px;
      margin-bottom: 28px;
      gap: 2px;
    }
    .auth-tab {
      flex: 1;
      padding: 9px 0;
      text-align: center;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: 9px;
      cursor: pointer;
      transition: background var(--transition), color var(--transition), box-shadow var(--transition);
      user-select: none;
      font-family: var(--font-body);
      border: none;
      background: transparent;
    }
    .auth-tab.active {
      background: var(--surface);
      color: var(--text-primary);
      box-shadow: 0 1px 6px rgba(0,0,0,0.2);
    }
    body.light .auth-tab.active { box-shadow: 0 1px 6px rgba(0,0,0,0.1); }

    /* Form — 与 app.php style.css 完全一致 */
    .auth-panel { display: none; flex-direction: column; gap: 16px; }
    .auth-panel.active { display: flex; }
    .auth-field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 1rem; }
    .auth-label {
      font-family: var(--font-display);
      font-size: 0.72rem;
      font-weight: 700;
      color: var(--text-secondary);
      letter-spacing: 0.06em;
      text-transform: uppercase;
    }
    .auth-input {
      width: 100%;
      padding: 0.75rem 1rem;
      background: var(--surface-2);
      border: 1.5px solid var(--border);
      border-radius: 10px;
      font-family: var(--font-body);
      font-size: 0.95rem;
      color: var(--text-primary);
      outline: none;
      transition: all var(--transition);
    }
    .auth-input::placeholder { color: var(--text-muted); }
    .auth-input:focus {
      border-color: var(--blue-core);
      box-shadow: 0 0 0 3px var(--blue-dim);
      background: var(--surface);
    }
    body.light .auth-input { background: #F4F6FC; }
    body.light .auth-input:focus { background: #fff; }
    .auth-hint {
      font-size: 11px;
      color: var(--text-muted);
      margin-top: 3px;
      line-height: 1.4;
    }
    .auth-error {
      font-size: 12px;
      color: #E53E3E;
      min-height: 16px;
      margin-top: -4px;
      margin-bottom: 4px;
    }
    .auth-submit {
      width: 100%;
      padding: 0.9rem;
      background: var(--blue-core);
      color: #fff;
      border: none;
      border-radius: 50px;
      font-family: var(--font-display);
      font-size: 0.95rem;
      font-weight: 700;
      cursor: pointer;
      transition: all var(--transition);
      box-shadow: 0 2px 10px var(--blue-glow);
      letter-spacing: 0.02em;
      margin-top: 0.5rem;
    }
    .auth-submit:hover {
      background: #005BB5;
      box-shadow: 0 0 28px var(--blue-glow);
      transform: translateY(-1px);
    }
    .auth-submit:active { transform: scale(0.98); opacity: 0.9; }
    .auth-success {
      display: none;
      flex-direction: column;
      align-items: center;
      gap: 12px;
      padding: 16px 0;
      text-align: center;
    }
    .auth-success.show { display: flex; }
    .auth-success-icon {
      width: 52px; height: 52px;
      background: rgba(52,199,89,0.12);
      border: 1px solid rgba(52,199,89,0.25);
      border-radius: 50%;
      display: grid;
      place-items: center;
    }
    .auth-success-icon svg { width: 24px; height: 24px; color: #34C759; }
    .auth-success-title {
      font-family: var(--font-display);
      font-size: 18px;
      font-weight: 700;
      color: var(--text-primary);
    }
    .auth-success-desc { font-size: 14px; color: var(--text-secondary); }
    .auth-divider {
      display: flex;
      align-items: center;
      gap: 12px;
      margin: 4px 0;
    }
    .auth-divider::before, .auth-divider::after {
      content: '';
      flex: 1;
      height: 1px;
      background: var(--border);
    }
    .auth-divider span { font-size: 12px; color: var(--text-muted); white-space: nowrap; }

    @media (max-width: 480px) {
      .auth-box { padding: 48px 20px 24px; border-radius: 20px; }
      .nav-auth-btn span { display: none; }
      .nav-auth-btn { padding: 8px 10px; }
    }
  

/* ══ Product Mockup（index.php 产品展示区）══ */

    /* ══════════════════════════════════════════
       PRODUCT MOCKUP  (嵌入 index.php)
       同时支持暗黑/明亮配色 + 移动端响应式
    ══════════════════════════════════════════ */

    /* ── 设计令牌（暗色）── */
    .mockup-wrap {
      --pm-bg:       #080910;
      --pm-surface:  #0D0E17;
      --pm-surface2: #13141C;
      --pm-surface3: #1A1C28;
      --pm-border:   rgba(255,255,255,0.08);
      --pm-border-b: rgba(10,132,255,0.30);
      --pm-blue:     #0A84FF;
      --pm-blue-d:   rgba(10,132,255,0.12);
      --pm-blue-g:   rgba(10,132,255,0.40);
      --pm-green:    #30D158;
      --pm-green-d:  rgba(48,209,88,0.12);
      --pm-orange:   #FF9F0A;
      --pm-orange-d: rgba(255,159,10,0.12);
      --pm-red:      #FF453A;
      --pm-txt1:     #EEEEF2;
      --pm-txt2:     #8A8BA0;
      --pm-txt3:     #5A5B70;
      --pm-radius:   16px;
      --pm-shadow:   0 24px 60px rgba(0,0,0,0.6), 0 0 0 1px rgba(10,132,255,0.15);
      --pm-font:     'DM Sans', -apple-system, 'Segoe UI', sans-serif;
    }

    /* ── 明亮模式配色 ── */
    body.light .mockup-wrap {
      --pm-bg:       #F0F2FA;
      --pm-surface:  #FFFFFF;
      --pm-surface2: #F4F6FC;
      --pm-surface3: #EAEDf7;
      --pm-border:   rgba(0,0,0,0.08);
      --pm-border-b: rgba(0,112,224,0.20);
      --pm-blue:     #0070E0;
      --pm-blue-d:   rgba(0,112,224,0.10);
      --pm-blue-g:   rgba(0,112,224,0.35);
      --pm-green:    #28A745;
      --pm-green-d:  rgba(40,167,69,0.10);
      --pm-orange:   #E67700;
      --pm-orange-d: rgba(230,119,0,0.10);
      --pm-red:      #DC3545;
      --pm-txt1:     #0C0D14;
      --pm-txt2:     #454762;
      --pm-txt3:     #8587A2;
      --pm-shadow:   0 16px 48px rgba(0,0,0,0.10), 0 0 0 1px rgba(0,112,224,0.12);
    }

    /* ── 整体容器 ── */
    .mockup-wrap {
      width: 100%;
      max-width: 960px;
      margin: 72px auto 0;
      position: relative;
    }

    /* 光晕 */
    .mockup-glow {
      position: absolute;
      top: -60px; left: 50%;
      transform: translateX(-50%);
      width: 600px; height: 180px;
      background: radial-gradient(ellipse, var(--pm-blue-g) 0%, transparent 70%);
      filter: blur(40px);
      pointer-events: none;
      z-index: 0;
    }

    /* 浏览器外壳 */
    .mockup-wrap .browser {
      position: relative;
      z-index: 1;
      background: var(--pm-surface);
      border: 1px solid var(--pm-border);
      border-radius: var(--pm-radius);
      box-shadow: var(--pm-shadow);
      overflow: hidden;
    }

    /* 顶部栏 */
    .mockup-wrap .browser-bar {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 12px 18px;
      background: var(--pm-surface2);
      border-bottom: 1px solid var(--pm-border);
    }
    .mockup-wrap .dots { display: flex; gap: 6px; }
    .mockup-wrap .dot  { width: 11px; height: 11px; border-radius: 50%; }
    .mockup-wrap .dot-r { background: #FF5F57; }
    .mockup-wrap .dot-y { background: #FEBC2E; }
    .mockup-wrap .dot-g { background: #28C840; }

    .mockup-wrap .url-bar {
      flex: 1;
      background: var(--pm-surface3);
      border: 1px solid var(--pm-border);
      border-radius: 6px;
      padding: 5px 12px;
      font-size: 12px;
      color: var(--pm-txt3);
      text-align: center;
      user-select: none;
      font-family: var(--pm-font);
    }

    /* ── App 内部布局 ── */
    .mockup-wrap .app-shell {
      display: grid;
      grid-template-columns: 160px 1fr;
      height: 480px;
    }

    /* 侧边栏 */
    .mockup-wrap .sidebar {
      background: var(--pm-surface2);
      border-right: 1px solid var(--pm-border);
      padding: 16px 10px;
      display: flex;
      flex-direction: column;
      gap: 2px;
      overflow-y: auto;
    }
    .mockup-wrap .sidebar::-webkit-scrollbar { width: 3px; }

    .mockup-wrap .sb-brand {
      margin-bottom: 14px;
      padding: 0 6px;
    }
    .mockup-wrap .sb-brand-name {
      font-size: 13px;
      font-weight: 800;
      color: var(--pm-txt1);
      letter-spacing: -0.02em;
      font-family: var(--pm-font);
    }
    .mockup-wrap .sb-brand-sub {
      font-size: 10px;
      color: var(--pm-txt3);
      margin-top: 3px;
      display: flex;
      align-items: center;
      gap: 5px;
    }
    .mockup-wrap .sb-dot {
      width: 6px; height: 6px;
      border-radius: 50%;
      background: var(--pm-blue);
      display: inline-block;
      animation: pmDotPulse 2s ease-in-out infinite;
    }
    @keyframes pmDotPulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50%       { opacity: 0.5; transform: scale(0.85); }
    }
    .mockup-wrap .sb-section {
      font-size: 9px;
      font-weight: 700;
      color: var(--pm-txt3);
      letter-spacing: 0.08em;
      text-transform: uppercase;
      padding: 8px 6px 4px;
      font-family: var(--pm-font);
    }
    .mockup-wrap .sb-item {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 7px 8px;
      border-radius: 8px;
      font-size: 12px;
      color: var(--pm-txt2);
      cursor: pointer;
      transition: all 0.15s;
      font-family: var(--pm-font);
      white-space: nowrap;
    }
    .mockup-wrap .sb-item svg { width: 14px; height: 14px; flex-shrink: 0; }
    .mockup-wrap .sb-item:hover { background: var(--pm-surface3); color: var(--pm-txt1); }
    .mockup-wrap .sb-item.active {
      background: var(--pm-blue-d);
      color: var(--pm-blue);
      font-weight: 600;
    }
    body.light .mockup-wrap .sb-item.active {
      background: rgba(0,112,224,0.08);
    }

    /* ── 主内容区 ── */
    .mockup-wrap .main {
      display: flex;
      flex-direction: column;
      background: var(--pm-surface);
      overflow: hidden;
    }
    .mockup-wrap .view { display: none; flex-direction: column; flex: 1; overflow: hidden; }
    .mockup-wrap .view.active { display: flex; }

    /* 视图通用头部 */
    .mockup-wrap .view-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 14px 18px;
      border-bottom: 1px solid var(--pm-border);
      flex-shrink: 0;
    }
    .mockup-wrap .view-title {
      font-size: 14px;
      font-weight: 700;
      color: var(--pm-txt1);
      font-family: var(--pm-font);
    }
    .mockup-wrap .view-nav {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .mockup-wrap .nav-btn {
      width: 26px; height: 26px;
      border-radius: 6px;
      background: var(--pm-surface2);
      border: 1px solid var(--pm-border);
      display: flex; align-items: center; justify-content: center;
      cursor: pointer;
      color: var(--pm-txt2);
    }
    .mockup-wrap .nav-btn svg { width: 12px; height: 12px; }
    .mockup-wrap .nav-month {
      font-size: 12px;
      color: var(--pm-txt2);
      font-family: var(--pm-font);
    }
    .mockup-wrap .add-btn {
      display: flex; align-items: center; gap: 5px;
      padding: 5px 10px;
      border-radius: 6px;
      background: var(--pm-blue);
      color: #fff;
      font-size: 11px;
      font-weight: 600;
      cursor: pointer;
      border: none;
      font-family: var(--pm-font);
    }
    .mockup-wrap .add-btn svg { width: 12px; height: 12px; }

    /* ── 月视图 ── */
    .mockup-wrap .month-grid {
      flex: 1;
      overflow-y: auto;
      padding: 10px 14px;
    }
    .mockup-wrap .month-grid::-webkit-scrollbar { width: 3px; }
    .mockup-wrap .weekdays {
      display: grid;
      grid-template-columns: repeat(7, 1fr);
      margin-bottom: 4px;
    }
    .mockup-wrap .wday {
      text-align: center;
      font-size: 10px;
      font-weight: 700;
      color: var(--pm-txt3);
      padding: 4px 0;
      font-family: var(--pm-font);
      text-transform: uppercase;
    }
    .mockup-wrap .days-grid {
      display: grid;
      grid-template-columns: repeat(7, 1fr);
      gap: 3px;
    }
    .mockup-wrap .mday {
      min-height: 52px;
      border-radius: 7px;
      padding: 4px;
      border: 1px solid transparent;
      font-family: var(--pm-font);
    }
    .mockup-wrap .mday.today {
      border-color: var(--pm-blue);
      background: var(--pm-blue-d);
    }
    .mockup-wrap .mday.other { opacity: 0.3; }
    .mockup-wrap .mday-num {
      font-size: 11px;
      color: var(--pm-txt2);
      font-weight: 500;
      margin-bottom: 2px;
    }
    .mockup-wrap .mday.today .mday-num {
      color: var(--pm-blue);
      font-weight: 700;
    }
    .mockup-wrap .mevent {
      font-size: 9px;
      padding: 2px 4px;
      border-radius: 3px;
      margin-bottom: 1px;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
      font-family: var(--pm-font);
    }
    .mockup-wrap .mevent.blue   { background: var(--pm-blue-d);   color: var(--pm-blue); }
    .mockup-wrap .mevent.green  { background: var(--pm-green-d);  color: var(--pm-green); }
    .mockup-wrap .mevent.orange { background: var(--pm-orange-d); color: var(--pm-orange); }

    /* ── 周视图 ── */
    .mockup-wrap .week-grid {
      flex: 1;
      display: grid;
      grid-template-columns: repeat(7, 1fr);
      overflow: hidden;
      border-top: 1px solid var(--pm-border);
    }
    .mockup-wrap .week-col {
      border-right: 1px solid var(--pm-border);
      display: flex;
      flex-direction: column;
      padding: 8px 6px;
      gap: 4px;
    }
    .mockup-wrap .week-col:last-child { border-right: none; }
    .mockup-wrap .week-col.today { background: var(--pm-blue-d); }
    .mockup-wrap .week-col-hd {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 2px;
      margin-bottom: 6px;
    }
    .mockup-wrap .week-wd {
      font-size: 9px;
      font-weight: 700;
      color: var(--pm-txt3);
      text-transform: uppercase;
      font-family: var(--pm-font);
    }
    .mockup-wrap .week-date {
      font-size: 14px;
      font-weight: 700;
      color: var(--pm-txt2);
      font-family: var(--pm-font);
    }
    .mockup-wrap .week-col.today .week-date {
      color: #fff;
      background: var(--pm-blue);
      width: 24px; height: 24px;
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      font-size: 12px;
    }
    .mockup-wrap .week-events { display: flex; flex-direction: column; gap: 3px; }
    .mockup-wrap .wevent {
      font-size: 9px;
      padding: 3px 4px;
      border-radius: 4px;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
      font-family: var(--pm-font);
    }
    .mockup-wrap .wevent.blue   { background: var(--pm-blue-d);   color: var(--pm-blue); }
    .mockup-wrap .wevent.green  { background: var(--pm-green-d);  color: var(--pm-green); }
    .mockup-wrap .wevent.orange { background: var(--pm-orange-d); color: var(--pm-orange); }

    /* ── 今日视图 ── */
    .mockup-wrap .today-content {
      flex: 1;
      overflow-y: auto;
      padding: 14px 18px;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .mockup-wrap .today-content::-webkit-scrollbar { width: 3px; }
    .mockup-wrap .today-stats {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 8px;
    }
    .mockup-wrap .stat-card {
      background: var(--pm-surface2);
      border: 1px solid var(--pm-border);
      border-radius: 10px;
      padding: 10px;
      text-align: center;
    }
    .mockup-wrap .stat-num {
      font-size: 20px;
      font-weight: 800;
      color: var(--pm-blue);
      letter-spacing: -0.03em;
      line-height: 1;
      font-family: var(--pm-font);
    }
    .mockup-wrap .stat-lbl {
      font-size: 9px;
      color: var(--pm-txt3);
      margin-top: 3px;
      font-family: var(--pm-font);
    }
    .mockup-wrap .today-tasks { display: flex; flex-direction: column; gap: 6px; }
    .mockup-wrap .task-row {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 8px 10px;
      background: var(--pm-surface2);
      border: 1px solid var(--pm-border);
      border-radius: 8px;
    }
    .mockup-wrap .task-check {
      width: 16px; height: 16px;
      border-radius: 50%;
      border: 1.5px solid var(--pm-border);
      flex-shrink: 0;
    }
    .mockup-wrap .task-check.done { background: var(--pm-green); border-color: var(--pm-green); }
    .mockup-wrap .task-text {
      flex: 1;
      font-size: 11px;
      color: var(--pm-txt1);
      font-family: var(--pm-font);
    }
    .mockup-wrap .task-text.done { text-decoration: line-through; color: var(--pm-txt3); }
    .mockup-wrap .task-tag {
      font-size: 9px;
      padding: 2px 6px;
      border-radius: 4px;
      font-family: var(--pm-font);
    }
    .mockup-wrap .task-tag.blue   { background: var(--pm-blue-d);   color: var(--pm-blue); }
    .mockup-wrap .task-tag.green  { background: var(--pm-green-d);  color: var(--pm-green); }
    .mockup-wrap .task-tag.orange { background: var(--pm-orange-d); color: var(--pm-orange); }

    /* ── 清单视图 ── */
    .mockup-wrap .list-content {
      flex: 1;
      overflow-y: auto;
      padding: 14px 18px;
    }
    .mockup-wrap .list-content::-webkit-scrollbar { width: 3px; }
    .mockup-wrap .list-group { margin-bottom: 14px; }
    .mockup-wrap .list-group-title {
      font-size: 10px;
      font-weight: 700;
      color: var(--pm-txt3);
      letter-spacing: 0.07em;
      text-transform: uppercase;
      margin-bottom: 6px;
      font-family: var(--pm-font);
    }
    .mockup-wrap .li-item {
      display: flex;
      align-items: center;
      gap: 9px;
      padding: 7px 0;
      border-bottom: 1px solid var(--pm-border);
    }
    .mockup-wrap .li-item:last-child { border-bottom: none; }
    .mockup-wrap .li-check {
      width: 15px; height: 15px;
      border-radius: 50%;
      border: 1.5px solid var(--pm-border);
      flex-shrink: 0;
    }
    .mockup-wrap .li-check.done { background: var(--pm-green); border-color: var(--pm-green); }
    .mockup-wrap .li-meta { flex: 1; }
    .mockup-wrap .li-title {
      font-size: 12px;
      color: var(--pm-txt1);
      font-weight: 500;
      font-family: var(--pm-font);
    }
    .mockup-wrap .li-title.done { text-decoration: line-through; color: var(--pm-txt2); }
    .mockup-wrap .li-date {
      font-size: 10px;
      color: var(--pm-txt3);
      margin-top: 2px;
      font-family: var(--pm-font);
    }
    .mockup-wrap .li-badge {
      width: 8px; height: 8px;
      border-radius: 50%;
      flex-shrink: 0;
    }
    .mockup-wrap .li-badge.high { background: var(--pm-red); }
    .mockup-wrap .li-badge.mid  { background: var(--pm-orange); }
    .mockup-wrap .li-badge.low  { background: var(--pm-green); }

    /* ── OKR 视图 ── */
    .mockup-wrap .okr-content {
      flex: 1;
      overflow-y: auto;
      padding: 14px 18px;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .mockup-wrap .okr-content::-webkit-scrollbar { width: 3px; }
    .mockup-wrap .pm-ocard {
      background: var(--pm-surface2);
      border: 1px solid var(--pm-border);
      border-radius: 12px;
      overflow: hidden;
    }
    body.light .mockup-wrap .pm-ocard { background: #EEF1FA; }
    .mockup-wrap .pm-ohd {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      padding: 13px 15px;
      border-bottom: 1px solid var(--pm-border);
    }
    .mockup-wrap .pm-oico {
      width: 30px; height: 30px;
      border-radius: 8px;
      background: var(--pm-blue-d);
      border: 1px solid var(--pm-border-b);
      display: flex; align-items: center; justify-content: center;
      flex-shrink: 0;
    }
    .mockup-wrap .pm-oico svg { width: 15px; height: 15px; color: var(--pm-blue); }
    .mockup-wrap .pm-ometa { flex: 1; }
    .mockup-wrap .pm-otitle {
      font-size: 12px;
      font-weight: 700;
      color: var(--pm-txt1);
      font-family: var(--pm-font);
    }
    .mockup-wrap .pm-oprow {
      display: flex;
      align-items: center;
      gap: 7px;
      margin-top: 5px;
    }
    .mockup-wrap .pm-obw {
      flex: 1;
      height: 3px;
      background: var(--pm-surface3);
      border-radius: 3px;
      overflow: hidden;
    }
    body.light .mockup-wrap .pm-obw { background: #D8DCF0; }
    .mockup-wrap .pm-ob { height: 100%; background: var(--pm-blue); border-radius: 3px; }
    .mockup-wrap .pm-opct {
      font-size: 10px;
      color: var(--pm-blue);
      font-weight: 700;
      font-family: var(--pm-font);
    }
    .mockup-wrap .pm-krl {
      padding: 9px 15px;
      display: flex;
      flex-direction: column;
      gap: 7px;
    }
    .mockup-wrap .pm-kri {
      display: flex;
      align-items: center;
      gap: 9px;
    }
    .mockup-wrap .pm-kridx {
      width: 18px; height: 18px;
      background: var(--pm-surface3);
      border-radius: 4px;
      font-size: 9px;
      font-weight: 700;
      color: var(--pm-txt3);
      display: flex; align-items: center; justify-content: center;
      flex-shrink: 0;
      font-family: var(--pm-font);
    }
    body.light .mockup-wrap .pm-kridx { background: #D8DCF0; }
    .mockup-wrap .pm-krt {
      flex: 1;
      font-size: 11px;
      color: var(--pm-txt2);
      font-family: var(--pm-font);
    }
    .mockup-wrap .pm-krmb {
      width: 55px; height: 3px;
      background: var(--pm-surface3);
      border-radius: 3px;
      overflow: hidden;
    }
    body.light .mockup-wrap .pm-krmb { background: #D8DCF0; }
    .mockup-wrap .pm-krmf { height: 100%; border-radius: 3px; }
    .mockup-wrap .pm-krp {
      font-size: 10px;
      color: var(--pm-txt3);
      width: 26px;
      text-align: right;
      font-family: var(--pm-font);
    }

    /* ── 仪表盘视图 ── */
    .mockup-wrap .pm-dcont {
      flex: 1;
      overflow-y: auto;
      padding: 14px 18px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 11px;
      align-content: start;
    }
    .mockup-wrap .pm-dcont::-webkit-scrollbar { width: 3px; }
    .mockup-wrap .pm-dcol {
      background: var(--pm-surface2);
      border: 1px solid var(--pm-border);
      border-radius: 12px;
      overflow: hidden;
    }
    body.light .mockup-wrap .pm-dcol { background: #EEF1FA; }
    .mockup-wrap .pm-dchd {
      display: flex; align-items: center; gap: 7px;
      padding: 11px 13px;
      border-bottom: 1px solid var(--pm-border);
      font-size: 12px; font-weight: 700;
      color: var(--pm-txt1);
      font-family: var(--pm-font);
    }
    .mockup-wrap .pm-dchd svg { color: var(--pm-blue); width: 15px; height: 15px; }
    .mockup-wrap .pm-dcb { padding: 9px 13px; display: flex; flex-direction: column; gap: 8px; }
    .mockup-wrap .pm-dpi { display: flex; flex-direction: column; gap: 4px; }
    .mockup-wrap .pm-dpt { display: flex; justify-content: space-between; align-items: center; }
    .mockup-wrap .pm-dpn {
      font-size: 11px;
      color: var(--pm-txt2);
      font-family: var(--pm-font);
    }
    .mockup-wrap .pm-dpp {
      font-size: 11px;
      font-weight: 700;
      color: var(--pm-blue);
      font-family: var(--pm-font);
    }
    .mockup-wrap .pm-db {
      height: 3px;
      background: var(--pm-surface3);
      border-radius: 3px;
      overflow: hidden;
    }
    body.light .mockup-wrap .pm-db { background: #D8DCF0; }
    .mockup-wrap .pm-dbf {
      height: 100%;
      background: linear-gradient(90deg, var(--pm-blue), rgba(10,132,255,0.4));
      border-radius: 3px;
    }
    body.light .mockup-wrap .pm-dbf {
      background: linear-gradient(90deg, var(--pm-blue), rgba(0,112,224,0.35));
    }
    .mockup-wrap .pm-pomi {
      display: flex; align-items: center; gap: 8px;
      padding: 5px 0; border-bottom: 1px solid var(--pm-border);
    }
    .mockup-wrap .pm-pomi:last-child { border-bottom: none; }
    .mockup-wrap .pm-pomic {
      width: 20px; height: 20px;
      border-radius: 50%;
      border: 1.5px solid var(--pm-border);
      display: flex; align-items: center; justify-content: center;
      flex-shrink: 0;
    }
    .mockup-wrap .pm-pomic svg { width: 10px; height: 10px; }
    .mockup-wrap .pm-pomic.done { background: rgba(48,209,88,0.12); border-color: rgba(48,209,88,0.3); }
    .mockup-wrap .pm-pomt { flex: 1; }
    .mockup-wrap .pm-pomn {
      font-size: 11px; color: var(--pm-txt1);
      font-family: var(--pm-font);
    }
    .mockup-wrap .pm-pomm {
      font-size: 9px; color: var(--pm-txt3); margin-top: 1px;
      font-family: var(--pm-font);
    }
    .mockup-wrap .pm-pomtm {
      font-size: 11px; font-weight: 700;
      color: var(--pm-txt2);
      font-family: var(--pm-font);
    }

    /* ── 番茄钟视图 ── */
    .mockup-wrap .pomo-content {
      flex: 1;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 20px;
      gap: 16px;
    }
    .mockup-wrap .pomo-tag {
      display: flex; align-items: center; gap: 5px;
      padding: 4px 10px;
      background: var(--pm-blue-d);
      border: 1px solid var(--pm-border-b);
      border-radius: 20px;
      font-size: 10px;
      color: var(--pm-blue);
      font-family: var(--pm-font);
    }
    .mockup-wrap .pomo-tag svg { width: 10px; height: 10px; }
    .mockup-wrap .pomo-ring {
      position: relative;
      width: 140px; height: 140px;
    }
    .mockup-wrap .pomo-ring svg {
      width: 100%; height: 100%;
      transform: rotate(-90deg);
    }
    .mockup-wrap .ring-bg { fill: none; stroke: var(--pm-surface3); stroke-width: 8; }
    body.light .mockup-wrap .ring-bg { stroke: #D8DCF0; }
    .mockup-wrap .ring-fill {
      fill: none;
      stroke: var(--pm-blue);
      stroke-width: 8;
      stroke-linecap: round;
      stroke-dasharray: 427.26;
      stroke-dashoffset: 142.42;
      transition: stroke-dashoffset 0.5s;
    }
    .mockup-wrap .ring-text {
      position: absolute;
      inset: 0;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 2px;
    }
    .mockup-wrap .ring-display {
      font-size: 22px;
      font-weight: 800;
      color: var(--pm-txt1);
      letter-spacing: -0.03em;
      font-family: var(--pm-font);
    }
    .mockup-wrap .ring-phase {
      font-size: 9px;
      color: var(--pm-txt3);
      font-family: var(--pm-font);
    }
    .mockup-wrap .pomo-controls {
      display: flex; gap: 10px; align-items: center;
    }
    .mockup-wrap .pomo-play {
      width: 40px; height: 40px;
      border-radius: 50%;
      background: var(--pm-blue);
      border: none;
      display: flex; align-items: center; justify-content: center;
      cursor: pointer;
      color: #fff;
      transition: transform 0.15s;
    }
    .mockup-wrap .pomo-play:hover { transform: scale(1.06); }
    .mockup-wrap .pomo-play svg { width: 16px; height: 16px; }
    .mockup-wrap .pomo-stop {
      width: 32px; height: 32px;
      border-radius: 50%;
      background: var(--pm-surface2);
      border: 1px solid var(--pm-border);
      display: flex; align-items: center; justify-content: center;
      cursor: pointer;
      color: var(--pm-txt2);
    }
    .mockup-wrap .pomo-stop svg { width: 12px; height: 12px; }
    .mockup-wrap .pomo-info {
      font-size: 11px;
      color: var(--pm-txt3);
      text-align: center;
      font-family: var(--pm-font);
    }

    /* ── 移动端响应式优化（任务7）── */
    @media (max-width: 767px) {
      /* ── 整体外壳：移动端纵向排列 ── */
      .mockup-wrap .app-shell {
        grid-template-columns: 1fr;
        height: 460px;
        display: flex;
        flex-direction: column;
      }
      .mockup-wrap .sidebar { display: none; }

      /* ── 顶部 Tab 条（替代侧边栏，移动端4视图）── */
      .mockup-wrap .mobile-tabs {
        display: flex !important;
        overflow-x: hidden;
        gap: 0;
        padding: 6px 8px;
        background: var(--pm-surface2);
        border-bottom: 1px solid var(--pm-border);
        scrollbar-width: none;
        -ms-overflow-style: none;
        flex-shrink: 0;
        justify-content: space-between;
      }
      .mockup-wrap .mobile-tabs::-webkit-scrollbar { display: none; }
      .mockup-wrap .mobile-tab {
        display: flex; align-items: center; justify-content: center; gap: 4px;
        flex: 1;
        padding: 5px 6px;
        border-radius: 7px;
        font-size: 10px;
        color: var(--pm-txt2);
        cursor: pointer;
        white-space: nowrap;
        font-family: var(--pm-font);
        background: transparent;
        flex-shrink: 0;
        transition: all 0.15s;
        flex-direction: column;
      }
      .mockup-wrap .mobile-tab svg { width: 13px; height: 13px; flex-shrink: 0; margin-bottom: 1px; }
      .mockup-wrap .mobile-tab.active {
        background: var(--pm-blue-d);
        color: var(--pm-blue);
        font-weight: 600;
      }
      body.light .mockup-wrap .mobile-tab.active { background: rgba(0,112,224,0.08); }

      /* ── 主内容区：自动撑高 ── */
      .mockup-wrap .main {
        flex: 1;
        overflow: hidden;
        position: relative;
      }
      .mockup-wrap .view {
        height: 100%;
        overflow-y: auto;
        scrollbar-width: none;
      }
      .mockup-wrap .view::-webkit-scrollbar { display: none; }

      /* ── 月视图：保留事件标记 ── */
      .mockup-wrap .mday { min-height: 40px; padding: 3px; }
      .mockup-wrap .mday-num { font-size: 10px; }
      .mockup-wrap .mevent {
        display: block;           /* 移动端显示事件点 */
        font-size: 0;             /* 文字隐藏，只显示色点 */
        width: 5px; height: 5px;
        border-radius: 50%;
        padding: 0;
        margin: 1px auto 0;
      }
      .mockup-wrap .mevent.blue   { background: var(--pm-blue); }
      .mockup-wrap .mevent.green  { background: var(--pm-green); }
      .mockup-wrap .mevent.orange { background: var(--pm-orange); }
      .mockup-wrap .mday.today .mday-num {
        background: var(--pm-blue);
        color: #fff;
        border-radius: 50%;
        width: 18px; height: 18px;
        display: flex; align-items: center; justify-content: center;
        margin: 0 auto;
      }

      /* ── 周视图：横向滚动 ── */
      .mockup-wrap .week-grid {
        grid-template-columns: repeat(7, minmax(44px, 1fr));
        overflow-x: auto;
        scrollbar-width: none;
      }
      .mockup-wrap .week-grid::-webkit-scrollbar { display: none; }
      .mockup-wrap .week-col-hd { padding: 4px 2px; }
      .mockup-wrap .week-wd { font-size: 9px; }
      .mockup-wrap .week-date { font-size: 11px; }
      .mockup-wrap .wevent { font-size: 8px; padding: 2px 3px; margin-bottom: 2px; }

      /* ── 今日视图：紧凑 ── */
      .mockup-wrap .today-stats { grid-template-columns: repeat(3, 1fr); gap: 6px; }
      .mockup-wrap .stat-card { padding: 8px 4px; }
      .mockup-wrap .stat-num { font-size: 16px; }
      .mockup-wrap .stat-lbl { font-size: 9px; }
      .mockup-wrap .task-row { padding: 5px 8px; gap: 6px; }
      .mockup-wrap .task-check { width: 13px; height: 13px; flex-shrink: 0; }
      .mockup-wrap .task-tag { font-size: 8px; padding: 2px 5px; }

      /* ── 清单视图：紧凑 ── */
      .mockup-wrap .li-item { padding: 6px 8px; gap: 6px; }
      .mockup-wrap .li-title { font-size: 11px; }
      .mockup-wrap .li-date { font-size: 9px; }

      /* ── OKR 视图：紧凑 ── */
      .mockup-wrap .pm-ocard { padding: 8px 10px; }
      .mockup-wrap .pm-otitle { font-size: 11px; }
      .mockup-wrap .pm-kridx { font-size: 9px; padding: 1px 4px; }
      .mockup-wrap .pm-krt { font-size: 10px; }

      /* ── 仪表盘视图：单列 ── */
      .mockup-wrap .pm-dcont {
        grid-template-columns: 1fr;
        gap: 6px;
        padding: 8px;
      }
      .mockup-wrap .pm-dcol { padding: 8px; }
      .mockup-wrap .pm-dcol[style*="grid-column:span 2"],
      .mockup-wrap .pm-dcol[style*="grid-column: span 2"] { grid-column: span 1; }
      .mockup-wrap .pm-dcb[style*="flex-direction:row"] {
        flex-wrap: wrap;
        gap: 6px;
      }

      /* ── 番茄钟视图：居中缩小 ── */
      .mockup-wrap .pomo-content { padding: 12px 8px; gap: 10px; }
      .mockup-wrap .pomo-ring { width: 110px; height: 110px; }
      .mockup-wrap .pomo-ring svg { width: 110px; height: 110px; }
      .mockup-wrap .ring-display { font-size: 18px; }
      .mockup-wrap .ring-phase { font-size: 9px; }
      .mockup-wrap .pomo-controls { gap: 12px; }
      .mockup-wrap .pomo-play { width: 40px; height: 40px; }
      .mockup-wrap .pomo-stop { width: 28px; height: 28px; }
    }

    @media (max-width: 480px) {
      .mockup-wrap .browser-bar { padding: 7px 10px; gap: 8px; }
      .mockup-wrap .dot { width: 9px; height: 9px; }
      /* 在非常小的屏幕减少 tab 字号 */
      .mockup-wrap .mobile-tab { font-size: 9.5px; padding: 4px 7px; }
    }