/* ============================================================
   快连VPN - 第四套 橙红主题 · 导航式决策风格
   主色：珊瑚橙 #ff6b35 → #f7931e，深灰 #1a1a2e
   ============================================================ */

:root {
    --primary: #ff6b35;
    --primary-dark: #e55a2b;
    --primary-light: #ff8a5c;
    --secondary: #f7931e;
    --accent: #1a1a2e;
    --gray-900: #1a1a2e;
    --gray-700: #2d2d44;
    --gray-600: #4a4a6a;
    --gray-500: #6b6b8a;
    --gray-400: #9a9ab0;
    --gray-200: #e0e0ec;
    --gray-100: #f4f4f9;
    --white: #ffffff;
    --shadow: 0 8px 30px rgba(255, 107, 53, 0.15);
    --radius: 20px;
    --container: 1200px;
}

* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: "Inter", -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-700);
    background: var(--white);
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
.container { max-width: var(--container); margin:0 auto; padding:0 24px; }

/* ---------- 导航 ---------- */
.navbar {
    position: sticky;
    top:0;
    z-index:100;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--gray-200);
}
.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}
.logo { font-size: 22px; font-weight: 800; color: var(--gray-900); }
.logo-icon { color: var(--primary); margin-right: 4px; }
.logo .highlight { color: var(--primary); }
.main-nav { display: flex; gap: 28px; font-size: 15px; font-weight: 500; }
.main-nav a { color: var(--gray-600); padding: 4px 0; border-bottom: 2px solid transparent; }
.main-nav a:hover, .main-nav a.active { color: var(--primary); border-bottom-color: var(--primary); }
.btn-download {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    padding: 8px 24px;
    border-radius: 40px;
    font-weight: 600;
    font-size: 14px;
    transition: 0.2s;
}
.btn-download:hover { transform: scale(1.04); box-shadow: 0 6px 20px rgba(255,107,53,0.3); }
.mobile-toggle { display: none; flex-direction: column; gap:4px; cursor:pointer; }
.mobile-toggle span { width:24px; height:2px; background: var(--gray-900); }

/* ---------- Hero ---------- */
.hero {
    padding: 60px 0 80px;
    background: linear-gradient(170deg, #fff5f0 0%, #ffffff 80%);
}
.hero-flex {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 40px;
    align-items: center;
}
.badge {
    display: inline-block;
    background: rgba(255,107,53,0.12);
    color: var(--primary);
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
}
.hero h1 { font-size: 44px; font-weight: 800; color: var(--gray-900); line-height:1.1; }
.hero h1 span { color: var(--primary); background: linear-gradient(135deg, var(--primary), var(--secondary)); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; }
.hero .desc { font-size: 17px; color: var(--gray-600); margin: 20px 0 28px; max-width: 500px; }
.hero-stats { display: flex; gap: 32px; margin-bottom: 32px; }
.hero-stats div span { display:block; font-size: 28px; font-weight: 800; color: var(--primary); }
.hero-stats div label { font-size: 13px; color: var(--gray-500); }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    padding: 12px 28px;
    border-radius: 40px;
    font-weight: 600;
    transition: 0.2s;
    display: inline-block;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255,107,53,0.3); }
.btn-outline {
    border: 1px solid var(--gray-200);
    padding: 12px 28px;
    border-radius: 40px;
    font-weight: 600;
    color: var(--gray-900);
    transition: 0.2s;
}
.btn-outline:hover { border-color: var(--primary); background: rgba(255,107,53,0.04); }

/* 视觉装饰 - 动画环 */
.hero-visual { display: flex; justify-content: center; align-items: center; }
.globe-ring {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    position: relative;
    background: conic-gradient(var(--primary) 0deg 120deg, var(--secondary) 120deg 240deg, var(--primary-light) 240deg 360deg);
    animation: spin 8s linear infinite;
}
.globe-ring .ring-center {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    font-size: 48px;
    color: #fff;
    text-shadow: 0 0 20px rgba(255,107,53,0.5);
}
.globe-ring .ring-dot {
    position: absolute;
    width: 12px; height: 12px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 20px var(--primary);
    animation: orbit 3s ease-in-out infinite;
}
.globe-ring .ring-dot:nth-child(1) { top: 5%; left: 50%; animation-delay: 0s; }
.globe-ring .ring-dot:nth-child(2) { bottom: 5%; left: 50%; animation-delay: 1s; }
.globe-ring .ring-dot:nth-child(3) { top: 50%; left: 5%; animation-delay: 2s; }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes orbit {
    0% { transform: translate(0,0); opacity:1; }
    50% { transform: translate(0, -30px); opacity:0.5; }
    100% { transform: translate(0,0); opacity:1; }
}

/* ---------- 通用区块 ---------- */
.section { padding: 72px 0; }
.section-alt { background: var(--gray-100); }
.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 { font-size: 32px; font-weight: 700; color: var(--gray-900); }
.section-header p { color: var(--gray-500); font-size: 16px; }

/* ---------- 场景切换（核心步骤模块） ---------- */
.scenario-tabs {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 36px;
}
.tab-btn {
    padding: 12px 28px;
    border-radius: 40px;
    border: 2px solid var(--gray-200);
    background: transparent;
    font-weight: 600;
    font-size: 15px;
    color: var(--gray-600);
    cursor: pointer;
    transition: 0.2s;
}
.tab-btn:hover { border-color: var(--primary); color: var(--primary); }
.tab-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    border-color: transparent;
    box-shadow: 0 8px 24px rgba(255,107,53,0.3);
}
.scene-panel {
    display: none;
    background: #fff;
    border-radius: var(--radius);
    padding: 32px 36px;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
}
.scene-panel.active { display: block; }
.scene-intro { margin-bottom: 24px; }
.scene-intro h3 { font-size: 26px; color: var(--gray-900); }
.scene-intro p { color: var(--gray-500); }
.steps-wrapper {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin: 20px 0 24px;
}
.step-item {
    background: var(--gray-100);
    padding: 20px;
    border-radius: 16px;
    border-left: 4px solid var(--primary);
}
.step-num {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    color: var(--primary);
    background: rgba(255,107,53,0.1);
    padding: 2px 12px;
    border-radius: 12px;
    margin-bottom: 8px;
}
.step-item h4 { font-size: 18px; color: var(--gray-900); margin-bottom: 6px; }
.step-item p { font-size: 14px; color: var(--gray-600); }
.scene-data {
    display: flex;
    gap: 40px;
    padding: 16px 0;
    border-top: 1px solid var(--gray-200);
    margin-top: 16px;
}
.scene-data .data-label { font-size: 14px; color: var(--gray-500); }
.scene-data .data-value { font-size: 24px; font-weight: 800; color: var(--primary); }
.scene-cta { margin-top: 20px; display: inline-block; }

/* ---------- 对比表格 ---------- */
.compare-table {
    overflow-x: auto;
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
}
.compare-table table { width:100%; border-collapse: collapse; font-size:15px; }
.compare-table th, .compare-table td { padding: 16px 20px; text-align: left; border-bottom:1px solid var(--gray-200); }
.compare-table th { background: var(--gray-900); color: #fff; font-weight:600; }
.compare-table tr:last-child td { border-bottom: none; }
.compare-table td:first-child { font-weight: 600; }
.compare-table td:not(:first-child) { text-align: center; }
.compare-table td:not(:first-child) { font-weight: 500; }

/* ---------- 用户评价 ---------- */
.review-strip {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.review-strip blockquote {
    background: var(--gray-100);
    padding: 16px 24px;
    border-radius: 16px;
    border-left: 4px solid var(--primary);
    font-size: 15px;
    color: var(--gray-700);
}

/* ---------- CTA 横幅 ---------- */
.cta-banner {
    padding: 60px 0;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    text-align: center;
}
.cta-banner h2 { font-size: 32px; margin-bottom: 20px; color: #fff; }
.cta-banner .btn-white {
    background: #fff;
    color: var(--primary);
    padding: 14px 40px;
    border-radius: 40px;
    font-weight: 700;
    display: inline-block;
    transition: 0.2s;
}
.cta-banner .btn-white:hover { transform: scale(1.05); box-shadow: 0 8px 24px rgba(0,0,0,0.15); }

/* ---------- 下载页面专属 ---------- */
.download-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}
.download-card {
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 28px 20px;
    text-align: center;
    transition: 0.25s;
}
.download-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.download-card .os-icon { font-size: 48px; }
.download-card h3 { font-size: 22px; margin: 12px 0 4px; }
.download-card .version { color: var(--gray-500); font-size: 14px; }
.download-card .compat { font-size: 13px; color: var(--gray-600); margin: 6px 0 16px; }
.download-card .hash { font-size: 12px; color: var(--gray-400); margin-top: 10px; word-break: break-all; }
.download-faq {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    max-width: 800px;
    margin: 40px auto 0;
}
.faq-block {
    background: var(--gray-100);
    border-radius: var(--radius);
    padding: 20px 24px;
}
.faq-block h4 { font-size: 17px; color: var(--gray-900); margin-bottom: 12px; }
.faq-block ul li { font-size: 14px; color: var(--gray-600); padding: 4px 0; }

/* ---------- Footer ---------- */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 40px 0 20px;
}
.footer-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}
.footer-brand { font-size: 18px; font-weight: 700; color: #fff; }
.footer-brand span { font-weight: 400; font-size: 14px; color: var(--gray-400); }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-links a { font-size: 14px; transition: 0.2s; }
.footer-links a:hover { color: var(--primary); }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    margin-top: 24px;
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    opacity: 0.6;
}
.mobile-float { display: none; position: fixed; bottom:20px; left:50%; transform:translateX(-50%); z-index:50; width:calc(100% - 40px); max-width:380px; }
.mobile-float a { display:block; text-align:center; padding:14px; border-radius:40px; font-weight:700; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
    .steps-wrapper { grid-template-columns: 1fr 1fr; }
    .download-grid { grid-template-columns: 1fr 1fr; }
    .download-faq { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .main-nav { display: none; }
    .btn-download { display: none; }
    .mobile-toggle { display: flex; }
    .hero-flex { grid-template-columns: 1fr; text-align: center; }
    .hero .desc { margin-left: auto; margin-right: auto; }
    .hero-stats { justify-content: center; }
    .hero-actions { justify-content: center; }
    .hero h1 { font-size: 32px; }
    .scenario-tabs .tab-btn { flex: 1 1 45%; }
    .scene-panel { padding: 24px 20px; }
    .steps-wrapper { grid-template-columns: 1fr; }
    .download-grid { grid-template-columns: 1fr; }
    .compare-table table { font-size: 13px; }
    .compare-table th, .compare-table td { padding: 12px 10px; }
    .footer-flex { flex-direction: column; text-align: center; }
    .mobile-float { display: block; }
    body { padding-bottom: 80px; }
}
@media (max-width: 480px) {
    .hero h1 { font-size: 26px; }
    .hero-stats div span { font-size: 22px; }
    .scene-data { flex-direction: column; gap: 12px; }
}

/* ============================================================
   深度优化扩展样式 - 富内容组件库
   ============================================================ */

/* 通用排版 */
h1, h2, h3, h4 { color: var(--gray-900); line-height: 1.3; }
p { line-height: 1.75; }
.lead { font-size: 18px; color: var(--gray-600); line-height: 1.8; }
.muted { color: var(--gray-500); }
.text-primary { color: var(--primary); }

/* 强调块 */
.callout {
    border-left: 4px solid var(--primary);
    background: linear-gradient(90deg, rgba(255,107,53,0.06), rgba(255,107,53,0));
    padding: 20px 24px;
    border-radius: 0 12px 12px 0;
    margin: 24px 0;
    color: var(--gray-700);
}
.callout strong { color: var(--gray-900); }
.callout-warn { border-left-color: #e85d04; background: linear-gradient(90deg, rgba(232,93,4,0.06), rgba(232,93,4,0)); }
.callout-info { border-left-color: #0077b6; background: linear-gradient(90deg, rgba(0,119,182,0.06), rgba(0,119,182,0)); }
.callout-success { border-left-color: #2a9d8f; background: linear-gradient(90deg, rgba(42,157,143,0.06), rgba(42,157,143,0)); }

/* 段落标题 */
.subhead {
    font-size: 13px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 8px;
    display: inline-block;
}

/* 大数字 stat */
.big-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin: 40px 0;
}
.big-stat {
    text-align: center;
    padding: 28px 16px;
    background: #fff;
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
    transition: 0.25s;
}
.big-stat:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: transparent; }
.big-stat .num {
    display: block;
    font-size: 42px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
    margin-bottom: 8px;
}
.big-stat .unit { font-size: 22px; color: var(--gray-500); margin-left: 2px; }
.big-stat .lab { font-size: 14px; color: var(--gray-500); }

/* 三栏 / 二栏布局 */
.grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: 28px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; }

/* 信息卡片 */
.info-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 28px;
    border: 1px solid var(--gray-200);
    transition: 0.25s;
}
.info-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.info-card .ic-icon {
    width: 52px; height: 52px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(255,107,53,0.12), rgba(247,147,30,0.12));
    color: var(--primary);
    display: flex; align-items: center; justify-content: center;
    font-size: 24px;
    margin-bottom: 16px;
}
.info-card h3 { font-size: 19px; margin-bottom: 8px; }
.info-card p { font-size: 14px; color: var(--gray-600); }

/* 功能清单 */
.check-list { list-style: none; padding: 0; }
.check-list li {
    position: relative;
    padding: 8px 0 8px 32px;
    font-size: 15px;
    color: var(--gray-700);
}
.check-list li::before {
    content: "✓";
    position: absolute; left: 0; top: 8px;
    width: 20px; height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    display: flex; align-items: center; justify-content: center;
}
.x-list li::before { content: "✕"; background: var(--gray-200); color: var(--gray-500); }

/* 手风琴 FAQ */
.accordion { display: flex; flex-direction: column; gap: 12px; max-width: 900px; margin: 0 auto; }
.accordion-item {
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: 14px;
    overflow: hidden;
    transition: 0.2s;
}
.accordion-item.open { box-shadow: var(--shadow); border-color: transparent; }
.accordion-q {
    padding: 18px 22px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 16px;
    color: var(--gray-900);
    user-select: none;
}
.accordion-q::after {
    content: "+";
    font-size: 22px;
    color: var(--primary);
    transition: 0.25s;
}
.accordion-item.open .accordion-q::after { transform: rotate(45deg); }
.accordion-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
    color: var(--gray-600);
    font-size: 14px;
    line-height: 1.8;
}
.accordion-item.open .accordion-a { max-height: 1200px; }
.accordion-a-inner { padding: 0 22px 20px; }

/* FAQ 步骤解答 */
.faq-steps { display: flex; flex-direction: column; gap: 14px; margin-top: 4px; }
.faq-step {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    background: var(--gray-100);
    border-radius: 12px;
    padding: 14px 16px;
    border-left: 3px solid var(--primary);
    transition: 0.2s;
}
.faq-step:hover { background: #fff7f0; transform: translateX(2px); }
.faq-step-num {
    flex-shrink: 0;
    width: 30px; height: 30px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-weight: 800;
    font-size: 14px;
}
.faq-step-body { flex: 1; min-width: 0; }
.faq-step-title { font-weight: 700; color: var(--gray-900); font-size: 14px; margin-bottom: 4px; }
.faq-step-desc { color: var(--gray-600); font-size: 13.5px; line-height: 1.7; }
.faq-step-desc code {
    background: #fff;
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 12.5px;
    color: var(--primary);
    border: 1px solid var(--gray-200);
}
.faq-step-hint {
    display: inline-block;
    margin-top: 6px;
    background: rgba(255,107,53,0.1);
    color: var(--primary);
    padding: 2px 10px;
    border-radius: 10px;
    font-size: 12px;
    font-weight: 600;
}

/* 时间线 */
.timeline { position: relative; padding-left: 40px; max-width: 800px; margin: 0 auto; }
.timeline::before {
    content: "";
    position: absolute; left: 12px; top: 0; bottom: 0;
    width: 2px; background: linear-gradient(180deg, var(--primary), var(--secondary));
}
.timeline-item { position: relative; margin-bottom: 32px; }
.timeline-item::before {
    content: "";
    position: absolute; left: -33px; top: 4px;
    width: 14px; height: 14px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid var(--primary);
    box-shadow: 0 0 0 4px rgba(255,107,53,0.15);
}
.timeline-year {
    font-size: 13px; font-weight: 700;
    color: var(--primary);
    background: rgba(255,107,53,0.1);
    padding: 2px 12px;
    border-radius: 12px;
    display: inline-block;
    margin-bottom: 6px;
}
.timeline-title { font-size: 18px; font-weight: 700; color: var(--gray-900); margin-bottom: 4px; }
.timeline-desc { font-size: 14px; color: var(--gray-600); }

/* 评价网格 */
.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.testimonial {
    background: #fff;
    padding: 28px 24px;
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
    position: relative;
    transition: 0.25s;
}
.testimonial:hover { box-shadow: var(--shadow); border-color: transparent; }
.testimonial .stars { color: #f7931e; margin-bottom: 12px; font-size: 16px; }
.testimonial blockquote {
    font-size: 14px;
    color: var(--gray-700);
    line-height: 1.8;
    margin: 0 0 16px;
    font-style: italic;
}
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.testimonial-author .avatar {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700;
    font-size: 16px;
}
.testimonial-author .name { font-size: 14px; font-weight: 600; color: var(--gray-900); }
.testimonial-author .role { font-size: 12px; color: var(--gray-500); }

/* 客户 logo 墙 */
.logo-wall {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
    align-items: center;
}
.logo-wall .logo-cell {
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    padding: 22px 12px;
    text-align: center;
    color: var(--gray-500);
    font-weight: 600;
    font-size: 14px;
    transition: 0.2s;
}
.logo-wall .logo-cell:hover { color: var(--primary); border-color: var(--primary); }

/* 信任徽章 */
.trust-badges { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin: 24px 0; }
.badge-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #fff;
    border: 1px solid var(--gray-200);
    padding: 8px 16px;
    border-radius: 24px;
    font-size: 13px;
    color: var(--gray-700);
    font-weight: 500;
}
.badge-item .dot { width: 8px; height: 8px; border-radius: 50%; background: #2a9d8f; }

/* 标签云 */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
    background: var(--gray-100);
    color: var(--gray-700);
    padding: 4px 14px;
    border-radius: 16px;
    font-size: 13px;
    border: 1px solid var(--gray-200);
}

/* 分隔器 */
.divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gray-200), transparent);
    margin: 48px 0;
}

/* 文章样式 */
.article { max-width: 760px; margin: 0 auto; font-size: 16px; line-height: 1.85; color: var(--gray-700); }
.article h2 { font-size: 28px; margin: 40px 0 16px; color: var(--gray-900); }
.article h3 { font-size: 22px; margin: 32px 0 12px; color: var(--gray-900); }
.article p { margin: 16px 0; }
.article ul, .article ol { margin: 16px 0; padding-left: 24px; }
.article li { margin: 6px 0; }
.article code {
    background: var(--gray-100);
    color: var(--primary);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 14px;
    font-family: "JetBrains Mono", Consolas, monospace;
}
.article pre {
    background: var(--gray-900);
    color: #f4f4f9;
    padding: 20px 24px;
    border-radius: 12px;
    overflow-x: auto;
    margin: 20px 0;
    font-size: 13px;
    line-height: 1.7;
}

/* 高亮标签 */
.kbd {
    display: inline-block;
    padding: 1px 8px;
    border: 1px solid var(--gray-200);
    border-radius: 4px;
    background: #fff;
    box-shadow: 0 2px 0 var(--gray-200);
    font-family: monospace;
    font-size: 12px;
    color: var(--gray-700);
}

/* 状态指示 */
.status-indicator { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; }
.status-indicator .pulse {
    width: 10px; height: 10px; border-radius: 50%;
    background: #2a9d8f;
    box-shadow: 0 0 0 0 rgba(42,157,143,0.6);
    animation: pulse 2s infinite;
}
.status-indicator .pulse.warn { background: #e76f51; box-shadow: 0 0 0 0 rgba(231,111,81,0.6); }
.status-indicator .pulse.err { background: #d62828; box-shadow: 0 0 0 0 rgba(214,40,40,0.6); }
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(42,157,143,0.6); }
    70% { box-shadow: 0 0 0 12px rgba(42,157,143,0); }
    100% { box-shadow: 0 0 0 0 rgba(42,157,143,0); }
}

/* 价格卡 - 推荐样式 */
.pricing-card { position: relative; }
.pricing-card.featured {
    border: 2px solid var(--primary);
    box-shadow: 0 12px 40px rgba(255,107,53,0.2);
    transform: scale(1.03);
}
.pricing-card .ribbon {
    position: absolute;
    top: -14px; left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    padding: 6px 18px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    box-shadow: 0 6px 20px rgba(255,107,53,0.3);
    white-space: nowrap;
}
.pricing-price {
    display: flex; align-items: baseline; gap: 4px;
    margin: 12px 0;
}
.pricing-price .currency { font-size: 22px; color: var(--gray-500); font-weight: 600; }
.pricing-price .amount { font-size: 42px; font-weight: 800; color: var(--gray-900); line-height: 1; }
.pricing-price .period { font-size: 14px; color: var(--gray-500); }
.pricing-old {
    text-decoration: line-through;
    color: var(--gray-400);
    font-size: 14px;
    margin-left: 6px;
}

/* 数据表加强 */
.compare-table td.highlight { background: rgba(255,107,53,0.06); font-weight: 700; color: var(--primary); }

/* 媒体对象 */
.media { display: flex; gap: 16px; padding: 16px 0; }
.media .ico { font-size: 28px; flex-shrink: 0; }
.media .body strong { display: block; color: var(--gray-900); margin-bottom: 4px; }
.media .body p { font-size: 14px; color: var(--gray-600); margin: 0; }

/* 节点地图占位 */
.node-map {
    height: 320px;
    background:
        radial-gradient(circle at 30% 40%, rgba(255,107,53,0.18), transparent 40%),
        radial-gradient(circle at 70% 60%, rgba(247,147,30,0.18), transparent 40%),
        linear-gradient(135deg, #1a1a2e 0%, #2d2d44 100%);
    border-radius: var(--radius);
    position: relative;
    overflow: hidden;
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    text-align: center;
    padding: 32px;
}
.node-map::before {
    content: "";
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.06) 1px, transparent 1px);
    background-size: 40px 40px;
}
.node-map .overlay { position: relative; z-index: 1; }
.node-map .overlay h3 { color: #fff; font-size: 24px; margin-bottom: 8px; }
.node-map .overlay p { color: rgba(255,255,255,0.7); font-size: 14px; }
.node-map .pulse-pin {
    position: absolute;
    width: 10px; height: 10px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 12px var(--primary);
    animation: pinpulse 2.5s ease-in-out infinite;
}
@keyframes pinpulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(1.5); }
}

/* 性能图表 */
.chart-bar {
    height: 8px;
    background: var(--gray-200);
    border-radius: 4px;
    overflow: hidden;
    margin: 8px 0;
}
.chart-bar > span {
    display: block; height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 4px;
}
.chart-row { display: flex; align-items: center; gap: 16px; margin: 14px 0; }
.chart-row .label { width: 140px; font-size: 13px; color: var(--gray-600); }
.chart-row .bar { flex: 1; }
.chart-row .val { width: 80px; text-align: right; font-weight: 700; color: var(--primary); }

/* 教程步骤卡 */
.tutorial-step {
    background: #fff;
    border-radius: var(--radius);
    padding: 28px;
    border: 1px solid var(--gray-200);
    display: flex;
    gap: 20px;
    transition: 0.25s;
}
.tutorial-step:hover { box-shadow: var(--shadow); }
.tutorial-step .num {
    width: 48px; height: 48px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-weight: 800;
    font-size: 20px;
    flex-shrink: 0;
}
.tutorial-step h4 { font-size: 18px; margin-bottom: 6px; }
.tutorial-step p { font-size: 14px; color: var(--gray-600); margin: 4px 0; }

/* TOC 目录 */
.toc {
    background: var(--gray-100);
    border-radius: 14px;
    padding: 20px 24px;
    margin: 24px 0;
}
.toc-title { font-size: 13px; font-weight: 700; color: var(--gray-700); margin-bottom: 12px; letter-spacing: 1px; }
.toc ul { list-style: none; padding: 0; }
.toc li { padding: 6px 0; }
.toc a { color: var(--gray-700); font-size: 14px; transition: 0.2s; }
.toc a:hover { color: var(--primary); }
.toc li.lv2 a { padding-left: 16px; color: var(--gray-500); font-size: 13px; }
.toc li.lv3 a { padding-left: 32px; color: var(--gray-500); font-size: 13px; }

/* 媒体引用 */
.press-quote {
    text-align: center;
    font-size: 22px;
    font-style: italic;
    color: var(--gray-700);
    line-height: 1.6;
    max-width: 760px;
    margin: 0 auto;
    padding: 32px 0;
    border-top: 2px solid var(--gray-200);
    border-bottom: 2px solid var(--gray-200);
    position: relative;
}
.press-quote::before {
    content: "\201C";
    font-size: 80px;
    color: var(--primary);
    position: absolute;
    top: -20px; left: 50%;
    transform: translateX(-50%);
    background: #fff;
    padding: 0 16px;
    line-height: 1;
}
.press-quote-author {
    margin-top: 16px;
    font-size: 13px;
    font-style: normal;
    color: var(--gray-500);
}

/* CTA 内嵌 */
.cta-inline {
    background: linear-gradient(135deg, rgba(255,107,53,0.08), rgba(247,147,30,0.08));
    border: 1px solid rgba(255,107,53,0.2);
    border-radius: var(--radius);
    padding: 32px;
    text-align: center;
    margin: 40px 0;
}
.cta-inline h3 { color: var(--gray-900); margin-bottom: 8px; }
.cta-inline p { color: var(--gray-600); margin-bottom: 20px; }

/* 信息卡 meta 文本 */
.info-card .meta { font-size: 12px; color: var(--gray-500); margin: 10px 0 14px; line-height: 1.6; }

/* feature-grid 通用三栏 */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

/* hash 校验块 */
.hash-block {
    background: var(--gray-100);
    border-radius: 10px;
    padding: 10px 14px;
    margin: 12px 0;
    font-size: 12px;
    font-family: "JetBrains Mono", "Consolas", monospace;
}
.hash-row { display: flex; justify-content: space-between; align-items: center; padding: 4px 0; gap: 8px; }
.hash-row span { color: var(--gray-500); flex-shrink: 0; }
.hash-row code { color: var(--gray-700); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; text-align: right; }

/* 通用对比表格 */
.comparison-table { background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: 0 4px 16px rgba(0,0,0,0.04); }
.comparison-table table { border-collapse: collapse; }
.comparison-table tr:hover { background: var(--gray-100); }

/* 价格页：节省标签 */
.save-tag {
    display: inline-block;
    background: linear-gradient(135deg, #2a9d8f, #168aad);
    color: #fff;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 700;
    margin-left: 8px;
    vertical-align: middle;
}

/* 视觉 hero 升级 */
.hero-upgrade {
    padding: 80px 0 90px;
    background: linear-gradient(170deg, #fff5f0 0%, #ffffff 60%, #f4f4f9 100%);
    position: relative;
    overflow: hidden;
}
.hero-upgrade::before {
    content: "";
    position: absolute;
    top: -200px; right: -200px;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(255,107,53,0.15), transparent 70%);
    border-radius: 50%;
}

/* 响应式增强 */
@media (max-width: 1024px) {
    .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .testimonial-grid { grid-template-columns: 1fr 1fr; }
    .big-stats { grid-template-columns: repeat(2, 1fr); }
    .logo-wall { grid-template-columns: repeat(3, 1fr); }
    .pricing-card.featured { transform: scale(1); }
}
@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .testimonial-grid { grid-template-columns: 1fr; }
    .big-stats { grid-template-columns: 1fr 1fr; }
    .logo-wall { grid-template-columns: repeat(2, 1fr); }
    .chart-row { flex-wrap: wrap; }
    .chart-row .label, .chart-row .val { width: auto; }
    .tutorial-step { flex-direction: column; }
}