:root {
    --primary: #818cf8;
    --accent: #c084fc;
    --bg: #1e1b4b;
    --text: #e0e7ff;
    --card-bg: rgba(255,255,255,0.03);
    --border-color: rgba(129,140,248,0.2);
    --font-heading: 'Noto Serif SC', 'Source Han Serif SC', '思源宋体', serif;
    --font-body: 'Noto Sans SC', 'Source Han Sans SC', '思源黑体', 'Inter', sans-serif;
  }
  @import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;600;700;900&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');
  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-weight: 300;
    line-height: 1.85;
    letter-spacing: 0.02em;
    overflow-x: hidden;
    position: relative;
  }
  /* 渐变光晕背景 */
  body::before {
    content: '';
    position: fixed;
    top: -20%;
    left: -10%;
    width: 70vw;
    height: 70vw;
    background: radial-gradient(circle, rgba(192,132,252,0.14) 0%, transparent 60%);
    pointer-events: none;
    z-index: 0;
  }
  body::after {
    content: '';
    position: fixed;
    bottom: -20%;
    right: -10%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(129,140,248,0.12) 0%, transparent 65%);
    pointer-events: none;
    z-index: 0;
  }
  h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: 0.01em;
    line-height: 1.5;
  }
  a { text-decoration: none; color: var(--primary); transition: all 0.3s ease; }
  a:hover { color: var(--accent); }
  .container { position: relative; z-index: 2; max-width: 1200px; }

  /* ===== 导航栏 ===== */
  .navbar {
    background: transparent;
    transition: all 0.4s ease;
    padding: 20px 0;
    border-bottom: 1px solid transparent;
  }
  .navbar.scrolled {
    background: rgba(30, 27, 75, 0.85);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 0;
    box-shadow: 0 4px 30px rgba(0,0,0,0.2);
  }
  .navbar-brand {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--text);
    letter-spacing: 0.03em;
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .navbar-brand i { color: var(--primary); font-size: 1.3rem; }
  .navbar-brand:hover { color: var(--primary); }
  .nav-link {
    color: var(--text) !important;
    font-weight: 400;
    font-size: 0.95rem;
    margin: 0 8px;
    opacity: 0.85;
    transition: all 0.3s ease;
    position: relative;
  }
  .nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 0%;
    height: 1px;
    background: var(--accent);
    transition: all 0.3s ease;
  }
  .nav-link:hover { opacity: 1; color: var(--accent) !important; }
  .nav-link:hover::after { width: 60%; }
  .navbar-toggler {
    border: 1px solid var(--border-color);
    color: var(--text);
    background: transparent;
  }
  .navbar-toggler:focus { box-shadow: none; }

  /* ===== Hero 关键词标签云 ===== */
  .hero-section {
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
  }
  .hero-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
    margin-bottom: 50px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
  }
  .hero-tag {
    display: inline-block;
    padding: 6px 18px;
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-size: 0.82rem;
    color: rgba(224,231,255,0.75);
    background: rgba(129,140,248,0.05);
    animation: floatIn 0.6s ease both;
    transition: all 0.3s ease;
  }
  .hero-tag:hover {
    background: rgba(129,140,248,0.15);
    border-color: var(--primary);
    color: var(--text);
    transform: translateY(-2px);
  }
  .hero-tag:nth-child(1) { animation-delay: 0s; }
  .hero-tag:nth-child(2) { animation-delay: 0.08s; }
  .hero-tag:nth-child(3) { animation-delay: 0.16s; }
  .hero-tag:nth-child(4) { animation-delay: 0.24s; }
  .hero-tag:nth-child(5) { animation-delay: 0.32s; }
  .hero-tag:nth-child(6) { animation-delay: 0.4s; }
  .hero-tag:nth-child(7) { animation-delay: 0.48s; }
  .hero-tag:nth-child(8) { animation-delay: 0.56s; }
  .hero-tag:nth-child(9) { animation-delay: 0.64s; }
  .hero-tag:nth-child(10) { animation-delay: 0.72s; }
  @keyframes floatIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .hero-content {
    text-align: center;
    max-width: 750px;
    margin: 0 auto;
  }
  .hero-title {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 24px;
    line-height: 1.35;
  }
  .hero-title .highlight {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }
  .hero-subtitle {
    font-size: 1.1rem;
    color: rgba(224,231,255,0.7);
    margin-bottom: 40px;
    font-weight: 300;
    letter-spacing: 0.05em;
  }
  .hero-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 36px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    border: none;
    border-radius: 100px;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.35s ease;
    cursor: pointer;
  }
  .hero-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(129,140,248,0.35);
    color: #fff;
  }
  .scroll-indicator {
    margin-top: 50px;
    font-size: 0.8rem;
    opacity: 0.5;
    letter-spacing: 0.2em;
  }

  /* ===== 通用区块 ===== */
  .section {
    padding: 80px 0;
    position: relative;
  }
  .section-label {
    font-size: 0.8rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 12px;
    font-weight: 400;
  }
  .section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text);
  }
  .section-desc {
    color: rgba(224,231,255,0.6);
    max-width: 640px;
    margin-bottom: 48px;
    font-size: 0.95rem;
  }

  /* ===== Bento 卡片网格 ===== */
  .bento-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
  }
  .bento-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 28px 24px;
    transition: all 0.35s ease;
    opacity: 0;
    transform: translateY(30px);
    position: relative;
    overflow: hidden;
  }
  .bento-card.visible {
    opacity: 1;
    transform: translateY(0);
  }
  .bento-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 40px rgba(0,0,0,0.25);
    border-color: rgba(129,140,248,0.5);
    background: rgba(255,255,255,0.05);
  }
  .bento-card:hover .card-icon { color: var(--accent); }
  .bento-card.col-span-2 { grid-column: span 2; }
  .bento-card.col-span-3 { grid-column: span 3; }
  .bento-card.col-span-4 { grid-column: span 4; }
  .bento-card.col-span-6 { grid-column: span 6; }
  .bento-card.row-span-2 { grid-row: span 2; }
  .card-icon {
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 16px;
    transition: all 0.3s ease;
    display: inline-block;
  }
  .card-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    font-family: var(--font-heading);
  }
  .card-text {
    font-size: 0.9rem;
    color: rgba(224,231,255,0.6);
    line-height: 1.8;
  }
  .card-tag {
    display: inline-block;
    padding: 3px 12px;
    background: rgba(192,132,252,0.1);
    color: var(--accent);
    border-radius: 100px;
    font-size: 0.75rem;
    margin-top: 12px;
    border: 1px solid rgba(192,132,252,0.2);
  }

  /* ===== 长文介绍 ===== */
  .story-section {
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    background: rgba(0,0,0,0.15);
  }
  .story-content {
    max-width: 760px;
    margin: 0 auto;
  }
  .story-content p {
    margin-bottom: 24px;
    font-size: 1rem;
    color: rgba(224,231,255,0.75);
  }
  .story-content strong { color: var(--primary); font-weight: 500; }
  .story-steps {
    margin-top: 48px;
    counter-reset: step;
  }
  .step-item {
    position: relative;
    padding-left: 68px;
    padding-bottom: 40px;
    counter-increment: step;
    border-left: 1px solid var(--border-color);
    margin-left: 20px;
  }
  .step-item:last-child { border-left: 1px solid transparent; }
  .step-item::before {
    content: counter(step);
    position: absolute;
    left: -20px;
    top: 0;
    width: 40px;
    height: 40px;
    background: var(--bg);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1rem;
    color: var(--primary);
    font-family: var(--font-heading);
  }
  .step-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text);
  }
  .step-desc {
    font-size: 0.9rem;
    color: rgba(224,231,255,0.55);
    line-height: 1.8;
  }

  /* ===== FAQ ===== */
  .faq-section { padding-bottom: 60px; }
  .faq-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 28px 30px;
    margin-bottom: 16px;
    transition: all 0.3s ease;
  }
  .faq-item:hover {
    border-color: rgba(129,140,248,0.4);
    background: rgba(255,255,255,0.04);
  }
  .faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    font-weight: 500;
    font-size: 1rem;
    font-family: var(--font-heading);
  }
  .faq-question i {
    color: var(--accent);
    font-size: 0.8rem;
    transition: transform 0.3s ease;
  }
  .faq-item.open .faq-question i { transform: rotate(180deg); }
  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
    color: rgba(224,231,255,0.6);
    font-size: 0.9rem;
    line-height: 1.85;
  }
  .faq-answer-inner { padding-top: 14px; }

  /* ===== CTA ===== */
  .cta-section {
    padding: 100px 0;
    text-align: center;
    background: radial-gradient(ellipse at center, rgba(192,132,252,0.12) 0%, transparent 70%);
  }
  .cta-title {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 20px;
  }
  .cta-desc {
    max-width: 560px;
    margin: 0 auto 40px;
    color: rgba(224,231,255,0.65);
  }

  /* ===== 友情链接 ===== */
  .friend-links {
    border-top: 1px solid var(--border-color);
    padding: 60px 0 40px;
  }
  .friend-title {
    font-size: 0.8rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(224,231,255,0.4);
    margin-bottom: 20px;
    text-align: center;
  }
  .friend-content {
    text-align: center;
    color: rgba(224,231,255,0.4);
    font-size: 0.9rem;
  }

  /* ===== 页脚 ===== */
  .footer {
    border-top: 1px solid var(--border-color);
    padding: 40px 0;
    text-align: center;
    background: rgba(0,0,0,0.2);
  }
  .footer-brand {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
  }
  .footer-brand i { color: var(--primary); }
  .footer-copy {
    font-size: 0.8rem;
    color: rgba(224,231,255,0.35);
    letter-spacing: 0.05em;
  }
  .footer-links {
    margin: 16px 0;
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
  }
  .footer-links a {
    font-size: 0.85rem;
    color: rgba(224,231,255,0.5);
  }
  .footer-links a:hover { color: var(--accent); }

  /* ===== 滚动渐显延迟 ===== */
  .delay-1 { transition-delay: 0.05s; }
  .delay-2 { transition-delay: 0.1s; }
  .delay-3 { transition-delay: 0.15s; }
  .delay-4 { transition-delay: 0.2s; }
  .delay-5 { transition-delay: 0.25s; }
  .delay-6 { transition-delay: 0.3s; }
  .delay-7 { transition-delay: 0.35s; }
  .delay-8 { transition-delay: 0.4s; }

  /* ===== 响应式 ===== */
  @media (max-width: 992px) {
    .bento-card.col-span-3, .bento-card.col-span-4 { grid-column: span 6; }
    .bento-card.col-span-2 { grid-column: span 3; }
  }
  @media (max-width: 768px) {
    .hero-title { font-size: 2.2rem; }
    .hero-section { padding: 80px 0 50px; }
    .section { padding: 60px 0; }
    .bento-card.col-span-2, .bento-card.col-span-3 { grid-column: span 6; }
    .navbar-collapse {
      background: rgba(30,27,75,0.95);
      border-radius: 12px;
      padding: 16px;
      margin-top: 10px;
      border: 1px solid var(--border-color);
    }
  }

/* --- 子页面追加 --- */
/* 本页专属少量样式：关于页内容排版 */
        .about-hero {
            padding: 140px 0 80px;
            text-align: center;
            background: radial-gradient(ellipse at 20% 20%, rgba(129,140,248,0.12) 0%, transparent 55%);
        }
.about-hero .hero-title {
            font-size: 3.2rem;
            margin-bottom: 16px;
        }
.about-hero .hero-subtitle {
            max-width: 680px;
            margin: 0 auto;
            font-size: 1.1rem;
            opacity: 0.8;
        }
.about-section {
            padding: 70px 0;
        }
.about-section .section-label {
            margin-bottom: 12px;
        }
.about-section .section-title {
            font-size: 2.2rem;
            margin-bottom: 24px;
        }
.about-section .section-desc {
            font-size: 1rem;
            line-height: 1.9;
            opacity: 0.9;
            max-width: 860px;
        }
.about-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }
.about-item {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px 24px;
            transition: transform 0.3s ease, border-color 0.3s ease;
        }
.about-item:hover {
            transform: translateY(-6px);
            border-color: rgba(129,140,248,0.5);
        }
.about-item i {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 16px;
        }
.about-item h3 {
            font-size: 1.2rem;
            margin-bottom: 12px;
            color: var(--text);
        }
.about-item p {
            font-size: 0.9rem;
            opacity: 0.75;
            line-height: 1.7;
            margin-bottom: 0;
        }
.timeline {
            margin-top: 40px;
            padding-left: 20px;
            border-left: 2px solid var(--border-color);
        }
.timeline-item {
            position: relative;
            padding-bottom: 32px;
            padding-left: 24px;
        }
.timeline-item::before {
            content: '';
            position: absolute;
            left: -9px;
            top: 6px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid var(--bg);
        }
.timeline-item h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--primary);
        }
.timeline-item p {
            font-size: 0.95rem;
            opacity: 0.8;
            line-height: 1.8;
        }
.values-list {
            margin-top: 36px;
        }
.values-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            margin-bottom: 20px;
            font-size: 1rem;
            line-height: 1.8;
            opacity: 0.9;
        }
.values-list i {
            color: var(--accent);
            font-size: 1.2rem;
            margin-top: 4px;
            flex-shrink: 0;
        }
.about-hero { padding: 110px 0 50px; }
.about-hero .hero-title { font-size: 2.2rem; }
.about-section .section-title { font-size: 1.8rem; }

/* --- 子页面追加 --- */
/* 隐私政策页面专属样式 */
        .privacy-hero {
            padding: 120px 0 60px;
            text-align: center;
            position: relative;
        }
.privacy-hero .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            margin-bottom: 20px;
        }
.privacy-hero .hero-subtitle {
            color: var(--text);
            opacity: 0.8;
            max-width: 700px;
            margin: 0 auto;
            font-size: 1.1rem;
        }
.privacy-content {
            padding: 60px 0;
        }
.privacy-section {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 40px;
            margin-bottom: 30px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
.privacy-section:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(129, 140, 248, 0.15);
        }
.privacy-section h2 {
            color: var(--primary);
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 20px;
            font-family: var(--font-heading);
        }
.privacy-section h3 {
            color: var(--accent);
            font-size: 1.2rem;
            font-weight: 600;
            margin: 20px 0 12px;
        }
.privacy-section p, .privacy-section li {
            color: var(--text);
            opacity: 0.85;
            line-height: 1.8;
            margin-bottom: 12px;
        }
.privacy-section ul, .privacy-section ol {
            padding-left: 20px;
            margin-bottom: 16px;
        }
.privacy-section li {
            margin-bottom: 8px;
        }
.privacy-section .highlight {
            color: var(--primary);
            font-weight: 600;
        }
.privacy-section .divider {
            border-top: 1px solid var(--border-color);
            margin: 25px 0;
        }
.last-updated {
            color: var(--text);
            opacity: 0.6;
            font-size: 0.9rem;
            text-align: center;
            margin-top: 40px;
        }
.back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 45px;
            height: 45px;
            background: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 18px;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            z-index: 999;
        }
.back-to-top.show {
            opacity: 1;
            visibility: visible;
        }
.back-to-top:hover {
            background: var(--accent);
            transform: translateY(-3px);
        }
.privacy-hero {
                padding: 80px 0 40px;
            }
.privacy-hero .hero-title {
                font-size: 2rem;
            }
.privacy-section {
                padding: 25px;
            }

/* --- 子页面追加 --- */
/* 本页专属小量样式 */
        .disclaimer-section {
            padding: 60px 0;
        }
.disclaimer-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            margin-bottom: 24px;
            backdrop-filter: blur(10px);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
.disclaimer-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 32px rgba(129, 140, 248, 0.1);
        }
.disclaimer-card h3 {
            color: var(--primary);
            font-family: var(--font-heading);
            font-size: 1.4rem;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
.disclaimer-card h3 i {
            font-size: 1.2rem;
            color: var(--accent);
        }
.disclaimer-card p {
            color: var(--text);
            line-height: 1.8;
            font-size: 0.95rem;
            margin-bottom: 12px;
        }
.disclaimer-card ul {
            color: var(--text);
            padding-left: 20px;
            margin-bottom: 12px;
        }
.disclaimer-card li {
            line-height: 1.8;
            font-size: 0.95rem;
            margin-bottom: 8px;
        }
.disclaimer-card strong {
            color: var(--accent);
        }
.disclaimer-hero {
            padding: 80px 0 40px;
            text-align: center;
        }
.disclaimer-hero .hero-title {
            font-size: 2.5rem;
            margin-bottom: 16px;
        }
.disclaimer-hero .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text);
            opacity: 0.8;
            max-width: 700px;
            margin: 0 auto;
        }
.disclaimer-hero .hero-title {
                font-size: 1.8rem;
            }
.disclaimer-card {
                padding: 20px;
            }

/* --- 子页面追加 --- */
.guide-hero {
      background: linear-gradient(135deg, rgba(30,27,75,0.9) 0%, rgba(79,70,229,0.3) 100%);
      padding: 80px 0 60px;
      position: relative;
      overflow: hidden;
    }
.guide-hero::before {
      content: '';
      position: absolute;
      top: -50%;
      right: -20%;
      width: 500px;
      height: 500px;
      background: radial-gradient(circle, rgba(192,132,252,0.15) 0%, transparent 70%);
      border-radius: 50%;
    }
.guide-hero h1 {
      font-family: var(--font-heading);
      color: var(--text);
      font-size: 2.8rem;
      font-weight: 700;
      margin-bottom: 1rem;
      position: relative;
      z-index: 1;
    }
.guide-hero p {
      color: rgba(224,231,255,0.8);
      font-size: 1.1rem;
      max-width: 700px;
      position: relative;
      z-index: 1;
    }
.guide-section {
      padding: 60px 0;
    }
.guide-section-alt {
      background: rgba(129,140,248,0.05);
    }
.guide-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 28px;
      height: 100%;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
.guide-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 10px 30px rgba(129,140,248,0.15);
    }
.guide-card .card-icon {
      font-size: 2rem;
      color: var(--primary);
      margin-bottom: 16px;
      display: inline-block;
    }
.guide-card h3 {
      font-family: var(--font-heading);
      font-size: 1.3rem;
      color: var(--text);
      margin-bottom: 12px;
      font-weight: 600;
    }
.guide-card p {
      color: rgba(224,231,255,0.7);
      font-size: 0.95rem;
      line-height: 1.7;
    }
.guide-list {
      list-style: none;
      padding: 0;
      margin: 15px 0 0;
    }
.guide-list li {
      padding: 6px 0;
      color: rgba(224,231,255,0.75);
      font-size: 0.95rem;
      position: relative;
      padding-left: 24px;
    }
.guide-list li::before {
      content: '▸';
      position: absolute;
      left: 0;
      color: var(--accent);
      font-size: 1.1rem;
    }
.step-number {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      border-radius: 50%;
      color: #fff;
      font-weight: 700;
      font-size: 0.9rem;
      margin-bottom: 12px;
    }
.device-row {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      margin-top: 20px;
    }
.device-item {
      flex: 1;
      min-width: 180px;
      text-align: center;
      padding: 20px 15px;
      background: rgba(129,140,248,0.08);
      border: 1px solid var(--border-color);
      border-radius: 12px;
    }
.device-item i {
      font-size: 1.8rem;
      color: var(--primary);
      margin-bottom: 10px;
      display: block;
    }
.device-item span {
      font-size: 0.9rem;
      color: var(--text);
      font-weight: 500;
    }
.tip-box {
      background: linear-gradient(135deg, rgba(192,132,252,0.1), rgba(129,140,248,0.05));
      border: 1px solid rgba(192,132,252,0.3);
      border-radius: 12px;
      padding: 20px 24px;
      margin: 25px 0;
    }
.tip-box i {
      color: var(--accent);
      margin-right: 8px;
    }
.tip-box p {
      color: rgba(224,231,255,0.8);
      font-size: 0.95rem;
      margin: 0;
      line-height: 1.7;
    }
.faq-item h4 {
      color: var(--text);
      font-size: 1.1rem;
      font-weight: 600;
      margin-bottom: 10px;
      font-family: var(--font-body);
    }
.faq-item p {
      color: rgba(224,231,255,0.7);
      font-size: 0.95rem;
      line-height: 1.7;
      margin: 0;
    }
.guide-hero h1 {
        font-size: 2rem;
      }
.guide-hero {
        padding: 60px 0 40px;
      }