:root {
      --main: #4f46e5;
      --accent: #7c3aed;
      --bg: #f5f3ff;
      --text: #1e1b4b;
      --light-card: #ffffff;
      --radius-lg: 24px;
      --radius-md: 16px;
      --radius-pill: 999px;
      --shadow-light: 0 8px 20px rgba(79, 70, 229, 0.08);
      --shadow-hover: 0 14px 30px rgba(124, 58, 237, 0.18);
    }

    body {
      background-color: var(--bg);
      color: var(--text);
      font-family: 'Noto Sans SC', 'Inter', sans-serif;
      font-size: 0.95rem;
      line-height: 1.6;
      position: relative;
      overflow-x: hidden;
    }

    /* 顶部噪点纹理 */
    body::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 180px;
      background-image: radial-gradient(rgba(79, 70, 229, 0.03) 1px, transparent 1px);
      background-size: 22px 22px;
      pointer-events: none;
      z-index: 0;
    }

    /* 滚动进度条 */
    #scrollProgress {
      position: fixed;
      top: 0;
      left: 0;
      height: 4px;
      width: 0%;
      background: linear-gradient(90deg, var(--main), var(--accent));
      z-index: 9999;
      border-radius: 2px;
    }

    h1, h2, h3, .font-serif {
      font-family: 'Noto Serif SC', serif;
      font-weight: 700;
      letter-spacing: -0.02em;
    }

    .navbar-brand {
      font-size: 1.8rem;
      font-weight: 900;
      color: var(--main) !important;
      font-family: 'Noto Serif SC', serif;
      letter-spacing: 1px;
    }

    .navbar {
      backdrop-filter: blur(6px);
      background-color: rgba(255, 255, 255, 0.7);
      border-bottom: 1px solid rgba(79, 70, 229, 0.1);
    }

    .nav-link {
      font-weight: 500;
      color: var(--text);
      margin: 0 0.25rem;
      border-radius: var(--radius-pill);
      transition: all 0.2s;
    }

    .nav-link:hover {
      background: rgba(79, 70, 229, 0.08);
      color: var(--main);
    }

    .hero-section {
      padding: 6rem 0 4rem;
      position: relative;
    }

    .hero-stats {
      display: flex;
      gap: 2.5rem;
      flex-wrap: wrap;
      justify-content: center;
    }

    .stat-item {
      text-align: center;
    }

    .stat-number {
      font-size: 3.2rem;
      font-weight: 800;
      color: var(--main);
      font-family: 'Noto Serif SC', serif;
      line-height: 1;
    }

    .stat-label {
      font-size: 0.9rem;
      opacity: 0.8;
      letter-spacing: 1px;
      margin-top: 0.3rem;
    }

    .btn-pill {
      border-radius: var(--radius-pill);
      padding: 0.6rem 1.8rem;
      font-weight: 600;
      transition: 0.2s;
    }

    .btn-main {
      background: var(--main);
      color: white;
      border: none;
      box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
    }

    .btn-main:hover {
      background: var(--accent);
      transform: scale(1.03);
      color: white;
    }

    .card {
      border: 1px solid rgba(79, 70, 229, 0.1);
      border-radius: var(--radius-md);
      background: white;
      box-shadow: var(--shadow-light);
      transition: transform 0.25s ease, border-color 0.2s;
      height: 100%;
      padding: 1.5rem 1rem;
    }

    .card:hover {
      transform: scale(1.02);
      border-color: var(--accent);
      box-shadow: var(--shadow-hover);
    }

    .icon-single {
      width: 48px;
      height: 48px;
      border: 1.5px solid var(--main);
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      color: var(--main);
      background: rgba(79, 70, 229, 0.02);
      margin-bottom: 1rem;
    }

    .section-title {
      margin: 3rem 0 1.5rem;
      position: relative;
      font-size: 1.8rem;
      font-weight: 800;
      display: inline-block;
    }

    .section-title::after {
      content: "";
      display: block;
      width: 50%;
      height: 4px;
      background: linear-gradient(to right, var(--main), var(--accent));
      border-radius: var(--radius-pill);
      margin-top: 8px;
    }

    /* 时间线/步骤条 */
    .timeline-step {
      display: flex;
      gap: 1.2rem;
      padding: 1.2rem 0;
      border-bottom: 1px dashed rgba(79, 70, 229, 0.2);
    }

    .timeline-step:last-child {
      border-bottom: none;
    }

    .step-number {
      background: var(--main);
      color: white;
      min-width: 36px;
      height: 36px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.1rem;
      box-shadow: 0 4px 10px rgba(79, 70, 229, 0.3);
    }

    .step-content h5 {
      font-weight: 700;
      margin-bottom: 0.2rem;
    }

    .faq-item {
      background: white;
      border-radius: var(--radius-md);
      padding: 1rem 1.5rem;
      border: 1px solid rgba(79, 70, 229, 0.08);
      box-shadow: var(--shadow-light);
      margin-bottom: 0.8rem;
    }

    .footer-area {
      background: white;
      border-top: 2px solid rgba(79, 70, 229, 0.1);
      padding: 2.5rem 0;
      margin-top: 4rem;
    }

    .friend-links {
      background: rgba(79, 70, 229, 0.03);
      padding: 1.2rem 1.5rem;
      border-radius: var(--radius-md);
      border: 1px solid rgba(79, 70, 229, 0.1);
      margin-top: 2rem;
    }

    .friend-links h6 {
      font-family: 'Noto Serif SC', serif;
      font-weight: 700;
      color: var(--main);
    }

    /* 滚动淡入效果 */
    .fade-up {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }

    .fade-up.visible {
      opacity: 1;
      transform: translateY(0);
    }

    .navbar-toggler {
      border: 1px solid var(--main);
      border-radius: var(--radius-pill);
    }

    @media (max-width: 768px) {
      .hero-stats { gap: 1rem; }
      .stat-number { font-size: 2.4rem; }
    }

/* --- 子页面追加 --- */
/* 页面专属样式 */
        .about-hero {
            padding: 80px 0 60px;
            text-align: center;
            background: linear-gradient(135deg, var(--bg) 0%, #ede9fe 100%);
            border-bottom: 1px solid rgba(79, 70, 229, 0.08);
        }
.about-hero h1 {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--text);
            margin-bottom: 1.2rem;
            letter-spacing: -0.02em;
        }
.about-hero h1 span {
            color: var(--main);
        }
.about-hero .lead {
            font-size: 1.1rem;
            color: var(--text);
            opacity: 0.75;
            max-width: 680px;
            margin: 0 auto;
            line-height: 1.8;
        }
.about-section {
            padding: 70px 0;
        }
.about-section:nth-child(even) {
            background: rgba(255,255,255,0.5);
        }
.about-card {
            background: var(--light-card);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-light);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
            border: 1px solid rgba(79, 70, 229, 0.08);
        }
.about-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }
.about-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 20px;
            background: linear-gradient(135deg, var(--main), var(--accent));
            color: #fff;
        }
.about-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 14px;
        }
.about-card p {
            color: var(--text);
            opacity: 0.75;
            line-height: 1.8;
            margin-bottom: 0;
        }
.stats-band {
            padding: 50px 0;
            background: linear-gradient(135deg, var(--main), var(--accent));
            border-radius: var(--radius-lg);
            margin: 30px 0;
        }
.stats-band .stat-item {
            text-align: center;
            padding: 20px;
        }
.stats-band .stat-number {
            font-size: 2.5rem;
            font-weight: 900;
            color: #fff;
            display: block;
            margin-bottom: 5px;
        }
.stats-band .stat-label {
            color: rgba(255,255,255,0.8);
            font-size: 0.9rem;
            font-weight: 500;
        }
.timeline-wrap {
            position: relative;
            padding-left: 30px;
        }
.timeline-wrap::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(180deg, var(--main), var(--accent));
            border-radius: 2px;
        }
.timeline-item {
            position: relative;
            margin-bottom: 40px;
        }
.timeline-item::before {
            content: '';
            position: absolute;
            left: -36px;
            top: 8px;
            width: 15px;
            height: 15px;
            border-radius: 50%;
            background: var(--main);
            border: 3px solid #fff;
            box-shadow: 0 0 0 3px var(--main);
        }
.timeline-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--main);
            margin-bottom: 8px;
        }
.timeline-item p {
            color: var(--text);
            opacity: 0.75;
            line-height: 1.7;
        }
.value-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
.value-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid rgba(79, 70, 229, 0.08);
            color: var(--text);
            opacity: 0.8;
            line-height: 1.6;
        }
.value-list li:last-child {
            border-bottom: none;
        }
.value-list i {
            color: var(--main);
            margin-top: 4px;
            flex-shrink: 0;
        }
.highlight-box {
            background: linear-gradient(135deg, rgba(79,70,229,0.05), rgba(124,58,237,0.05));
            border: 1px solid rgba(79,70,229,0.15);
            border-radius: var(--radius-lg);
            padding: 30px;
            margin: 40px 0;
        }
.highlight-box h3 {
            color: var(--main);
            font-weight: 700;
            margin-bottom: 15px;
            font-size: 1.2rem;
        }
.highlight-box p {
            color: var(--text);
            opacity: 0.8;
            line-height: 1.8;
            margin-bottom: 0;
        }
.about-hero h1 {
                font-size: 2rem;
            }
.about-card {
                padding: 25px;
            }
.stats-band .stat-number {
                font-size: 2rem;
            }

/* --- 子页面追加 --- */
.disclaimer-hero {
            padding: 100px 0 60px;
            background: linear-gradient(135deg, rgba(79, 70, 229, 0.05) 0%, rgba(124, 58, 237, 0.08) 100%);
        }
.disclaimer-section {
            padding: 30px 0;
        }
.disclaimer-card {
            background: var(--light-card);
            border-radius: var(--radius-lg);
            padding: 35px;
            margin-bottom: 25px;
            box-shadow: var(--shadow-light);
            border-left: 4px solid var(--main);
            transition: box-shadow 0.3s ease;
        }
.disclaimer-card:hover {
            box-shadow: var(--shadow-hover);
        }
.disclaimer-card h3 {
            color: var(--main);
            font-weight: 700;
            font-size: 1.3rem;
            margin-bottom: 15px;
        }
.disclaimer-card p {
            color: var(--text);
            line-height: 1.8;
            font-size: 0.95rem;
            margin-bottom: 10px;
        }
.disclaimer-card ul {
            color: var(--text);
            padding-left: 20px;
        }
.disclaimer-card li {
            line-height: 1.8;
            font-size: 0.95rem;
            margin-bottom: 8px;
        }
.important-tag {
            display: inline-block;
            background: rgba(79, 70, 229, 0.1);
            color: var(--main);
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 15px;
        }
.last-updated {
            text-align: center;
            color: var(--text);
            opacity: 0.6;
            font-size: 0.9rem;
            margin-top: 40px;
        }
.contact-box {
            background: linear-gradient(135deg, rgba(79, 70, 229, 0.08) 0%, rgba(124, 58, 237, 0.08) 100%);
            border-radius: var(--radius-md);
            padding: 30px;
            text-align: center;
            margin-top: 20px;
        }
.contact-box p {
            margin-bottom: 5px;
            color: var(--text);
        }
.contact-box strong {
            color: var(--main);
        }
.disclaimer-card {
                padding: 25px;
            }

/* --- 子页面追加 --- */
/* 页面专属微调，沿用品牌配色 */
        body {
            font-family: 'Noto Sans SC', 'Inter', sans-serif;
            background: var(--bg);
            color: var(--text);
        }
.rank-badge {
            background: var(--main);
            color: #fff;
            font-weight: 700;
            border-radius: var(--radius-pill);
            padding: .3rem .8rem;
            font-size: .9rem;
            display: inline-block;
            box-shadow: var(--shadow-light);
        }
.rank-card {
            background: var(--light-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-light);
            transition: transform .2s, box-shadow .2s;
            padding: 1.2rem 1.5rem;
            border: 1px solid rgba(79,70,229,.08);
        }
.rank-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
.rank-number {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--main);
            margin-right: 1rem;
            line-height: 1;
        }
.rank-cover {
            width: 70px;
            height: 96px;
            object-fit: cover;
            border-radius: 12px;
            box-shadow: 0 6px 14px rgba(79,70,229,.12);
        }
.rank-tag {
            background: rgba(79,70,229,.1);
            color: var(--main);
            padding: .2rem .7rem;
            border-radius: var(--radius-pill);
            font-size: .8rem;
            font-weight: 600;
            margin-right: .5rem;
            display: inline-block;
        }
.nav-link.active {
            color: var(--main) !important;
            font-weight: 600;
        }
.btn-pill:hover {
            background: var(--accent);
            color: #fff;
        }
.friend-links a {
            color: var(--text);
            opacity: .75;
            text-decoration: none;
            margin-right: 1.2rem;
        }
.friend-links a:hover {
            opacity: 1;
            color: var(--main);
        }