/* ==========================================================================
   批图师 官网 — 现代化设计系统 v2
   浅色简约 · 蓝紫渐变 · 深浅交替 · 滚动动画
   ========================================================================== */

:root {
    --primary: #2563EB;
    --primary-dark: #1D4ED8;
    --accent: #7C3AED;
    --accent-dark: #6D28D9;
    --gradient: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
    --gradient-hover: linear-gradient(135deg, #1D4ED8 0%, #6D28D9 100%);
    --gradient-soft: linear-gradient(135deg, #EFF6FF 0%, #F5F3FF 100%);
    --gradient-dark: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);

    --bg: #FFFFFF;
    --bg-soft: #F8FAFC;
    --bg-mixed: #FAFBFF;
    --bg-dark: #0F172A;
    --bg-darker: #020617;

    --text: #0F172A;
    --text-secondary: #475569;
    --text-muted: #94A3B8;
    --text-inverse: #F8FAFC;
    --text-inverse-muted: #94A3B8;

    --border: #E2E8F0;
    --border-soft: #F1F5F9;
    --border-dark: rgba(255,255,255,0.08);

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
    --shadow-lg: 0 16px 48px rgba(0,0,0,0.08);
    --shadow-xl: 0 24px 64px rgba(0,0,0,0.10);
    --shadow-glow: 0 8px 32px rgba(37,99,235,0.20);
    --shadow-glow-lg: 0 16px 48px rgba(37,99,235,0.30);

    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;
}

/* ===== 重置 ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    color: var(--text); line-height: 1.6; background: var(--bg);
    -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}
a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent); }
img { max-width: 100%; display: block; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== 公告条 ===== */
.top-notice {
    background: var(--gradient); color: #fff; text-align: center;
    padding: 10px 16px; font-size: 13px; font-weight: 500; letter-spacing: 0.3px;
}

/* ===== 导航栏 ===== */
.site-header {
    background: rgba(255,255,255,0.80);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-soft);
    position: sticky; top: 0; z-index: 100;
    transition: box-shadow 0.3s;
}
.site-header.scrolled { box-shadow: 0 1px 12px rgba(0,0,0,0.06); }
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.site-logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 700; color: var(--text); }
.site-logo .logo-badge {
    width: 36px; height: 36px; border-radius: 10px; background: var(--gradient);
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 18px; font-weight: 700; box-shadow: var(--shadow-glow);
}
.site-logo span { color: var(--accent); }
.site-nav { display: flex; gap: 32px; align-items: center; }
.site-nav a { color: var(--text-secondary); font-size: 15px; font-weight: 500; position: relative; padding: 4px 0; }
.site-nav a::after {
    content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px;
    background: var(--gradient); border-radius: 2px; transition: width 0.3s ease;
}
.site-nav a:hover::after, .site-nav a.active::after { width: 100%; }
.site-nav a:hover, .site-nav a.active { color: var(--primary); }
.nav-cta {
    background: var(--gradient); color: #fff !important; padding: 8px 20px;
    border-radius: var(--radius-full); font-size: 14px; font-weight: 600;
    box-shadow: var(--shadow-glow); transition: all 0.3s;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: var(--shadow-glow-lg); }
.nav-cta::after { display: none; }

/* ===== Hero 区（左右分栏） ===== */
.hero { position: relative; overflow: hidden; padding: 80px 0 100px; background: var(--bg-mixed); }
.hero::before {
    content: ''; position: absolute; top: -200px; right: -100px;
    width: 600px; height: 600px; border-radius: 50%;
    background: radial-gradient(circle, rgba(124,58,237,0.10) 0%, transparent 65%);
    filter: blur(40px); pointer-events: none;
}
.hero::after {
    content: ''; position: absolute; bottom: -200px; left: -100px;
    width: 500px; height: 500px; border-radius: 50%;
    background: radial-gradient(circle, rgba(37,99,235,0.10) 0%, transparent 65%);
    filter: blur(40px); pointer-events: none;
}
.hero .container { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: center; }
.hero-left .tag {
    display: inline-flex; align-items: center; gap: 6px;
    background: rgba(37,99,235,0.08); color: var(--primary);
    padding: 6px 16px; border-radius: var(--radius-full);
    font-size: 13px; font-weight: 600; margin-bottom: 24px;
}
.hero-left h1 {
    font-size: 52px; font-weight: 800; line-height: 1.12; letter-spacing: -1.5px;
    margin-bottom: 20px; color: var(--text);
}
.hero-left h1 .gradient-text {
    background: var(--gradient); -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero-left .subtitle { font-size: 18px; color: var(--text-secondary); margin-bottom: 14px; line-height: 1.7; }
.hero-left .positioning { font-size: 15px; color: var(--text-muted); margin-bottom: 36px; line-height: 1.7; }
.hero-cta-group { display: flex; gap: 16px; margin-bottom: 32px; }
.hero-badges { display: flex; gap: 24px; flex-wrap: wrap; }
.hero-badges span { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--text-muted); }

/* 渐变主按钮 */
.btn-gradient {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    background: var(--gradient); color: #fff; border: none;
    padding: 14px 32px; border-radius: var(--radius); font-size: 15px; font-weight: 600;
    cursor: pointer; transition: all 0.3s ease; box-shadow: var(--shadow-glow);
}
.btn-gradient:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow-lg); color: #fff; background: var(--gradient-hover); }
/* 轮廓按钮 */
.btn-outline {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    background: var(--bg); color: var(--text); border: 1.5px solid var(--border);
    padding: 14px 32px; border-radius: var(--radius); font-size: 15px; font-weight: 600;
    cursor: pointer; transition: all 0.3s ease;
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: var(--gradient-soft); }

/* ===== Hero Mockup（CSS模拟软件界面） ===== */
.hero-mockup {
    position: relative; border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl); overflow: hidden;
    border: 1px solid var(--border);
}
.mockup-titlebar {
    background: #F1F5F9; padding: 10px 16px; display: flex; align-items: center; gap: 8px;
    border-bottom: 1px solid var(--border);
}
.mockup-dot { width: 12px; height: 12px; border-radius: 50%; }
.mockup-dot.r { background: #EF4444; } .mockup-dot.y { background: #F59E0B; } .mockup-dot.g { background: #22C55E; }
.mockup-title { margin-left: 12px; font-size: 12px; color: var(--text-muted); }
.mockup-body { display: grid; grid-template-columns: 160px 1fr; height: 360px; background: #fff; }
.mockup-sidebar { background: #0F172A; padding: 16px 12px; }
.mockup-nav-item {
    display: flex; align-items: center; gap: 8px; padding: 8px 10px; border-radius: 8px;
    font-size: 12px; color: #94A3B8; margin-bottom: 4px;
}
.mockup-nav-item.active { background: rgba(37,99,235,0.2); color: #fff; }
.mockup-nav-icon { width: 16px; height: 16px; border-radius: 4px; background: currentColor; opacity: 0.6; }
.mockup-content { padding: 16px; overflow: hidden; }
.mockup-toolbar { display: flex; gap: 8px; margin-bottom: 16px; }
.mockup-btn { height: 24px; border-radius: 6px; background: var(--gradient-soft); flex: 1; }
.mockup-btn.primary { background: var(--gradient); }
.mockup-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.mockup-img {
    aspect-ratio: 1; border-radius: 8px; background: linear-gradient(135deg, #E2E8F0, #F1F5F9);
    position: relative; overflow: hidden;
}
.mockup-img::before {
    content: ''; position: absolute; inset: 20%;
    background: linear-gradient(135deg, #CBD5E1, #94A3B8); border-radius: 6px; opacity: 0.5;
}
.mockup-img:nth-child(1)::before { background: linear-gradient(135deg, #93C5FD, #3B82F6); opacity: 0.3; }
.mockup-img:nth-child(2)::before { background: linear-gradient(135deg, #C4B5FD, #7C3AED); opacity: 0.3; }
.mockup-img:nth-child(3)::before { background: linear-gradient(135deg, #86EFAC, #22C55E); opacity: 0.3; }

/* ===== 平台支持条 ===== */
.platforms-bar { padding: 32px 0; background: var(--bg); border-bottom: 1px solid var(--border-soft); }
.platforms-bar .container { display: flex; align-items: center; gap: 40px; flex-wrap: wrap; justify-content: center; }
.platforms-bar .label { font-size: 14px; color: var(--text-muted); font-weight: 500; white-space: nowrap; }
.platforms-bar .items { display: flex; gap: 28px; flex-wrap: wrap; }
.platforms-bar .items span { font-size: 15px; font-weight: 600; color: var(--text-secondary); }

/* ===== 通用 Section ===== */
.section { padding: 100px 0; position: relative; }
.section-soft { background: var(--bg-soft); }
.section-dark { background: var(--bg-dark); color: var(--text-inverse); }
.section-header { text-align: center; max-width: 680px; margin: 0 auto 64px; }
.section-eyebrow {
    display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 1px;
    text-transform: uppercase; color: var(--primary); margin-bottom: 16px;
    padding: 4px 16px; border-radius: var(--radius-full); background: rgba(37,99,235,0.08);
}
.section-dark .section-eyebrow { background: rgba(124,58,237,0.15); color: #A78BFA; }
.section-title { font-size: 40px; font-weight: 800; letter-spacing: -1px; line-height: 1.2; margin-bottom: 16px; }
.section-title .gradient-text { background: var(--gradient); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.section-dark .section-title { color: var(--text-inverse); }
.section-desc { font-size: 16px; color: var(--text-muted); line-height: 1.7; }
.section-dark .section-desc { color: var(--text-inverse-muted); }

/* ===== 交替图文功能展示 ===== */
.feature-split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; margin-bottom: 100px; }
.feature-split:last-child { margin-bottom: 0; }
.feature-split:nth-child(even) .feature-visual { order: -1; }
.feature-info .icon-lg {
    width: 64px; height: 64px; border-radius: 16px; background: var(--gradient);
    display: flex; align-items: center; justify-content: center;
    font-size: 30px; margin-bottom: 24px; box-shadow: var(--shadow-glow);
}
.feature-info h3 { font-size: 28px; font-weight: 700; margin-bottom: 16px; color: var(--text); }
.feature-info p { font-size: 16px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 20px; }
.feature-info ul li { padding: 6px 0; font-size: 15px; color: var(--text-secondary); display: flex; align-items: center; gap: 10px; }
.feature-info ul li::before { content: '✓'; color: var(--primary); font-weight: 700; font-size: 16px; }

/* 功能区CSS可视化 */
.feature-visual {
    border-radius: var(--radius-xl); padding: 40px; min-height: 320px;
    display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden;
}
.visual-blue { background: linear-gradient(135deg, #EFF6FF, #DBEAFE); }
.visual-purple { background: linear-gradient(135deg, #F5F3FF, #EDE9FE); }
.visual-green { background: linear-gradient(135deg, #F0FDF4, #DCFCE7); }
.visual-orange { background: linear-gradient(135deg, #FFF7ED, #FFEDD5); }
/* 可视化内部卡片 */
.visual-card {
    background: #fff; border-radius: var(--radius-lg); padding: 24px;
    box-shadow: var(--shadow-lg); width: 100%; max-width: 360px;
}
.visual-card .vc-row { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.visual-card .vc-icon { width: 40px; height: 40px; border-radius: 10px; background: var(--gradient-soft); display: flex; align-items: center; justify-content: center; font-size: 20px; }
.visual-card .vc-text { flex: 1; }
.visual-card .vc-text strong { display: block; font-size: 14px; color: var(--text); }
.visual-card .vc-text small { font-size: 12px; color: var(--text-muted); }
.visual-card .vc-bar { height: 6px; border-radius: 3px; background: var(--border-soft); margin-bottom: 8px; overflow: hidden; }
.visual-card .vc-bar .fill { height: 100%; border-radius: 3px; background: var(--gradient); }

/* ===== 功能卡片网格（保留用于AI区） ===== */
.features-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }
.feature-card {
    background: rgba(255,255,255,0.05); border: 1px solid var(--border-dark);
    border-radius: var(--radius-lg); padding: 32px 28px;
    transition: all 0.3s ease; backdrop-filter: blur(10px);
}
.section-dark .feature-card:hover { background: rgba(255,255,255,0.08); transform: translateY(-6px); border-color: rgba(124,58,237,0.3); }
.feature-card .icon-wrap {
    width: 56px; height: 56px; border-radius: 14px; background: var(--gradient);
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 18px; font-size: 26px; box-shadow: var(--shadow-glow);
}
.feature-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; color: var(--text-inverse); display: flex; align-items: center; gap: 8px; }
.feature-card p { color: var(--text-inverse-muted); font-size: 14px; line-height: 1.7; }
.pro-badge { font-size: 11px; font-weight: 700; color: #fff; background: var(--gradient); padding: 3px 10px; border-radius: var(--radius-full); letter-spacing: 0.5px; box-shadow: var(--shadow-glow); }

/* ===== 数据统计条 ===== */
.stats-bar { padding: 64px 0; background: var(--bg); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
.stat-item .num { font-size: 48px; font-weight: 800; background: var(--gradient); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; margin-bottom: 8px; }
.stat-item .label { font-size: 15px; color: var(--text-muted); }

/* ===== 步骤流程 ===== */
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.steps-grid::before {
    content: ''; position: absolute; top: 32px; left: 12%; right: 12%;
    height: 2px; background: var(--border); z-index: 0;
}
.step-card { text-align: center; position: relative; z-index: 1; }
.step-card .num {
    width: 64px; height: 64px; border-radius: 50%; background: var(--bg);
    border: 2px solid var(--border); display: flex; align-items: center; justify-content: center;
    margin: 0 auto 16px; font-size: 24px; font-weight: 800; color: var(--text-muted);
    transition: all 0.3s ease;
}
.step-card:hover .num { background: var(--gradient); border-color: transparent; color: #fff; box-shadow: var(--shadow-glow); transform: scale(1.08); }
.step-card h4 { font-size: 17px; font-weight: 600; margin-bottom: 8px; color: var(--text); }
.step-card p { font-size: 14px; color: var(--text-muted); }

/* ===== 定价卡片 ===== */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; max-width: 1040px; margin: 0 auto; }
.pricing-card {
    background: var(--bg); border: 1px solid var(--border-soft); border-radius: var(--radius-xl);
    padding: 40px 32px; text-align: center; position: relative; transition: all 0.3s ease; box-shadow: var(--shadow-sm);
}
.pricing-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-6px); }
.pricing-card.featured {
    border-color: transparent;
    background: linear-gradient(var(--bg), var(--bg)) padding-box, var(--gradient) border-box;
    border: 2px solid transparent; box-shadow: var(--shadow-glow);
}
.pricing-card.featured::before {
    content: '推荐'; position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
    background: var(--gradient); color: #fff; padding: 5px 20px; border-radius: var(--radius-full);
    font-size: 12px; font-weight: 600; box-shadow: var(--shadow-glow);
}
.pricing-card .name { font-size: 20px; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.pricing-card .price { font-size: 48px; font-weight: 800; margin: 16px 0 4px; background: var(--gradient); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.pricing-card .price small { font-size: 16px; color: var(--text-muted); font-weight: 400; -webkit-text-fill-color: var(--text-muted); }
.pricing-card .duration { color: var(--text-muted); font-size: 14px; margin-bottom: 24px; }
.pricing-card ul { margin: 24px 0; text-align: left; }
.pricing-card ul li { padding: 7px 0; color: var(--text-secondary); font-size: 13.5px; display: flex; align-items: flex-start; gap: 8px; }
.pricing-card ul li::before { content: '✓'; color: var(--primary); font-weight: 700; flex-shrink: 0; }
.pricing-card ul li.disabled { color: var(--text-muted); }
.pricing-card ul li.disabled::before { content: '✗'; color: var(--text-muted); }
/* 精简亮点列表 */
.pricing-card ul.highlights li { font-size: 14px; padding: 6px 0; }
.pricing-card .buy-btn {
    display: block; width: 100%; background: var(--gradient); color: #fff;
    padding: 14px; border-radius: var(--radius); border: none; font-size: 15px; font-weight: 600;
    cursor: pointer; transition: all 0.3s; box-shadow: var(--shadow-glow);
}
.pricing-card .buy-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow-lg); color: #fff; }

/* ===== 功能对比表格（放大版） ===== */
.compare-table-wrap { overflow-x: auto; border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); border: 1px solid var(--border-soft); }
.compare-table { width: 100%; border-collapse: collapse; background: var(--bg); font-size: 16px; }
.compare-table thead th {
    padding: 24px 28px; text-align: center; font-weight: 700; font-size: 18px;
    background: var(--bg-soft); border-bottom: 2px solid var(--border); color: var(--text);
}
.compare-table thead th:first-child { text-align: left; }
.compare-table thead th.th-annual { background: var(--gradient-soft); color: var(--primary); font-size: 19px; }
.compare-table tbody td {
    padding: 18px 28px; text-align: center; border-bottom: 1px solid var(--border-soft);
    color: var(--text-secondary); font-size: 15px;
}
.compare-table tbody td.feature-name { text-align: left; font-weight: 600; color: var(--text); font-size: 15px; }
.compare-table tbody td.yes { color: var(--primary); font-weight: 700; font-size: 20px; }
.compare-table tbody td.no { color: var(--text-muted); font-size: 18px; }
.compare-table tbody td.col-annual { background: rgba(37,99,235,0.02); }
.compare-table tbody td.col-annual.yes { color: var(--primary); }
.compare-table tbody tr.group-header td {
    background: var(--gradient-soft); font-weight: 700; font-size: 14px;
    color: var(--primary); text-transform: uppercase; letter-spacing: 1.5px;
    padding: 16px 28px; border-bottom: 1px solid var(--border);
}
.compare-table tbody tr:hover td { background: rgba(37,99,235,0.03); }

/* ===== FAQ 手风琴 ===== */
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item { border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 12px; overflow: hidden; transition: all 0.3s; }
.faq-item:hover { border-color: rgba(37,99,235,0.2); }
.faq-item.active { border-color: var(--primary); box-shadow: var(--shadow-glow); }
.faq-question { padding: 20px 24px; display: flex; align-items: center; justify-content: space-between; cursor: pointer; font-size: 16px; font-weight: 600; color: var(--text); user-select: none; }
.faq-question .icon { width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; transition: transform 0.3s; color: var(--primary); font-size: 20px; }
.faq-item.active .faq-question .icon { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-answer-inner { padding: 0 24px 20px; font-size: 15px; color: var(--text-secondary); line-height: 1.8; }

/* ===== 底部 CTA ===== */
.cta-section { padding: 80px 0; }
.cta-box {
    background: var(--gradient); border-radius: var(--radius-2xl);
    padding: 64px 48px; text-align: center; position: relative; overflow: hidden;
    box-shadow: var(--shadow-glow-lg);
}
.cta-box::before {
    content: ''; position: absolute; top: -50%; right: -10%;
    width: 400px; height: 400px; border-radius: 50%;
    background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 70%); pointer-events: none;
}
.cta-box h2 { font-size: 36px; font-weight: 800; color: #fff; margin-bottom: 16px; position: relative; }
.cta-box p { font-size: 17px; color: rgba(255,255,255,0.85); margin-bottom: 32px; position: relative; }
.cta-box .btn-white {
    display: inline-flex; align-items: center; gap: 8px; background: #fff; color: var(--primary);
    padding: 16px 40px; border-radius: var(--radius-full); font-size: 16px; font-weight: 700;
    transition: all 0.3s; position: relative;
}
.cta-box .btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); }

/* ===== 表单 ===== */
.form-card { max-width: 640px; margin: 0 auto; background: var(--bg); padding: 44px; border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); border: 1px solid var(--border-soft); }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-size: 14px; font-weight: 500; color: var(--text-secondary); }
.form-group input, .form-group textarea, .form-group select {
    width: 100%; padding: 12px 16px; border: 1.5px solid var(--border); border-radius: var(--radius);
    font-size: 14px; font-family: inherit; color: var(--text); background: var(--bg-soft); transition: all 0.2s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    outline: none; border-color: var(--primary); background: var(--bg); box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
.form-group .tip { color: var(--text-muted); font-size: 12px; margin-top: 6px; }
.btn-primary {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    background: var(--gradient); color: #fff; border: none; padding: 12px 32px;
    border-radius: var(--radius); font-size: 15px; font-weight: 600; cursor: pointer;
    transition: all 0.3s; box-shadow: var(--shadow-glow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow-lg); color: #fff; background: var(--gradient-hover); }
.btn-success { background: linear-gradient(135deg, #16A34A 0%, #15803D 100%) !important; box-shadow: 0 8px 24px rgba(22,163,74,0.18) !important; }
.btn-success:hover { background: linear-gradient(135deg, #15803D 0%, #166534 100%) !important; }

/* ===== 提示框 ===== */
.alert { padding: 16px 20px; border-radius: var(--radius); margin-bottom: 16px; font-size: 14px; line-height: 1.7; border: 1px solid var(--border-soft); }
.alert-info { background: #EFF6FF; border-color: #BFDBFE; color: #1E40AF; }
.alert-success { background: #F0FDF4; border-color: #BBF7D0; color: #166534; }
.alert-warning { background: #FFFBEB; border-color: #FDE68A; color: #92400E; }
.alert-danger { background: #FEF2F2; border-color: #FECACA; color: #991B1B; }

/* ===== 授权码展示卡 ===== */
.license-card { background: var(--gradient-soft); border: 2px dashed rgba(37,99,235,0.3); border-radius: var(--radius-lg); padding: 32px; text-align: center; margin: 24px 0; }
.license-card .label { color: var(--text-muted); font-size: 14px; margin-bottom: 10px; }
.license-card .code { font-size: 30px; font-weight: 800; background: var(--gradient); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; letter-spacing: 2px; font-family: "Cascadia Code", Consolas, monospace; }

/* ===== 页脚 ===== */
.site-footer { background: var(--bg-dark); color: var(--text-muted); padding: 56px 0 0; margin-top: 0; }
.site-footer .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 40px; padding-bottom: 32px; }
.site-footer .footer-brand .logo-badge { width: 36px; height: 36px; border-radius: 10px; background: var(--gradient); display: inline-flex; align-items: center; justify-content: center; color: #fff; font-size: 18px; font-weight: 700; margin-bottom: 12px; box-shadow: var(--shadow-glow); }
.site-footer h4 { color: var(--text-inverse); font-size: 16px; font-weight: 600; margin-bottom: 14px; }
.site-footer a { color: #94A3B8; font-size: 14px; }
.site-footer a:hover { color: #fff; }
.site-footer p { font-size: 14px; line-height: 1.8; }
.site-footer .copyright { text-align: center; padding: 20px 0; border-top: 1px solid var(--border-dark); font-size: 13px; color: #64748B; }

/* ===== 动画 ===== */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeInLeft { from { opacity: 0; transform: translateX(-30px); } to { opacity: 1; transform: translateX(0); } }
@keyframes fadeInRight { from { opacity: 0; transform: translateX(30px); } to { opacity: 1; transform: translateX(0); } }
.reveal { opacity: 0; }
.reveal.visible { animation: fadeInUp 0.7s ease forwards; }
.reveal-left.visible { animation: fadeInLeft 0.7s ease forwards; }
.reveal-right.visible { animation: fadeInRight 0.7s ease forwards; }

/* ===== 工具类 ===== */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.mt-20 { margin-top: 20px; } .mt-40 { margin-top: 40px; } .mb-20 { margin-bottom: 20px; }

/* ===== 响应式 ===== */
@media (max-width: 968px) {
    .hero .container { grid-template-columns: 1fr; gap: 48px; }
    .hero-left h1 { font-size: 38px; }
    .hero-mockup { max-width: 480px; margin: 0 auto; }
    .feature-split { grid-template-columns: 1fr; gap: 32px; margin-bottom: 64px; }
    .feature-split:nth-child(even) .feature-visual { order: 0; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
    .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 40px; }
    .steps-grid::before { display: none; }
}
@media (max-width: 768px) {
    .container { padding: 0 16px; }
    .site-nav { display: none; }
    .hero { padding: 48px 0 64px; }
    .hero-left h1 { font-size: 32px; }
    .hero-cta-group { flex-direction: column; }
    .section { padding: 64px 0; }
    .section-title { font-size: 28px; }
    .pricing-grid { grid-template-columns: 1fr; max-width: 420px; }
    .features-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .steps-grid { grid-template-columns: 1fr; }
    .form-card { padding: 28px 20px; }
    .cta-box { padding: 40px 24px; }
    .cta-box h2 { font-size: 26px; }
    .query-layout, .contact-layout { grid-template-columns: 1fr !important; }
    .download-hero { flex-direction: column; text-align: center; }
    .timeline-item { padding-left: 0 !important; }
    .timeline-item .timeline-num { display: none; }
    .timeline::before { display: none; }
}

/* ==========================================================================
   新增组件样式（v2 扩展）
   ========================================================================== */

/* ===== 下载页 ===== */
.download-hero {
    display: flex; align-items: center; justify-content: space-between; gap: 32px;
    background: var(--gradient-soft); border: 1px solid var(--border-soft);
    border-radius: var(--radius-xl); padding: 40px; margin-bottom: 32px;
}
.download-hero-left { display: flex; align-items: center; gap: 24px; }
.dl-icon-wrap {
    width: 80px; height: 80px; border-radius: 20px; background: var(--gradient);
    display: flex; align-items: center; justify-content: center;
    font-size: 40px; box-shadow: var(--shadow-glow); flex-shrink: 0;
}
.download-hero-left h3 { font-size: 24px; font-weight: 700; margin-bottom: 4px; }
.download-hero-left p { color: var(--text-muted); font-size: 14px; margin-bottom: 12px; }
.dl-meta { display: flex; gap: 16px; flex-wrap: wrap; }
.dl-meta span { font-size: 13px; color: var(--text-secondary); background: rgba(255,255,255,0.6); padding: 4px 12px; border-radius: var(--radius-full); }
.dl-btn { padding: 16px 36px; font-size: 16px; }
.download-info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 32px; }
.info-card { background: var(--bg); border: 1px solid var(--border-soft); border-radius: var(--radius-lg); padding: 28px 24px; box-shadow: var(--shadow-sm); }
.info-card .info-icon { width: 56px; height: 56px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 26px; margin-bottom: 16px; }
.info-card h4 { font-size: 17px; font-weight: 600; margin-bottom: 8px; }
.info-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.md5-code { display: block; margin-top: 12px; font-family: "Cascadia Code", Consolas, monospace; font-size: 12px; color: var(--primary); background: var(--bg-soft); padding: 8px 12px; border-radius: 8px; word-break: break-all; }
.requirements-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.req-item { display: flex; align-items: center; gap: 16px; background: var(--bg-soft); border-radius: var(--radius); padding: 20px 24px; border: 1px solid var(--border-soft); }
.req-icon { width: 44px; height: 44px; border-radius: 12px; background: var(--bg); display: flex; align-items: center; justify-content: center; font-size: 22px; flex-shrink: 0; }
.req-text { flex: 1; }
.req-text strong { display: block; font-size: 14px; color: var(--text); margin-bottom: 2px; }
.req-text span { font-size: 13px; color: var(--text-muted); }
.req-check { width: 28px; height: 28px; border-radius: 50%; background: linear-gradient(135deg, #DCFCE7, #BBF7D0); color: #16A34A; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 14px; }

/* ===== 时间轴（双列布局） ===== */
.timeline-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.timeline { position: relative; padding-left: 0; grid-column: 1 / -1; }
.timeline::before {
    content: ''; position: absolute; left: 28px; top: 12px; bottom: 12px;
    width: 2px; background: linear-gradient(180deg, var(--primary), var(--accent)); opacity: 0.2;
}
.timeline-item { position: relative; padding-left: 72px; margin-bottom: 28px; }
.timeline-item:last-child { margin-bottom: 0; }
.timeline-num {
    position: absolute; left: 0; top: 0; width: 56px; height: 56px; border-radius: 50%;
    background: var(--gradient); color: #fff; display: flex; align-items: center; justify-content: center;
    font-size: 24px; font-weight: 700; box-shadow: var(--shadow-glow); z-index: 1;
}
.timeline-content {
    background: var(--bg); border: 1px solid var(--border-soft); border-radius: var(--radius-lg);
    padding: 28px 32px; box-shadow: var(--shadow-sm); transition: all 0.3s;
}
.timeline-content:hover { box-shadow: var(--shadow-lg); transform: translateX(6px); border-color: rgba(37,99,235,0.2); }
.timeline-content h3 { font-size: 20px; font-weight: 700; margin-bottom: 14px; color: var(--text); }
.timeline-content p { font-size: 15px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 8px; }
.timeline-content p:last-child { margin-bottom: 0; }
.inline-code { font-family: "Cascadia Code", Consolas, monospace; background: var(--bg-soft); padding: 2px 8px; border-radius: 6px; font-size: 13px; color: var(--primary); }
.tier-badges { display: flex; flex-direction: column; gap: 8px; margin: 12px 0; }
.tier-badge { font-size: 13px; padding: 8px 14px; border-radius: var(--radius); }
.tier-badge.basic { background: #EFF6FF; color: #1E40AF; }
.tier-badge.pro { background: var(--gradient); color: #fff; box-shadow: var(--shadow-glow); }
.alert-list { margin: 8px 0 0; padding-left: 20px; }
.alert-list li { padding: 4px 0; }

/* ===== 双栏布局（订单查询/联系客服/解绑申请） ===== */
.query-layout { display: grid; grid-template-columns: 1fr 1.4fr; gap: 40px; align-items: start; }
.contact-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.form-title { font-size: 20px; font-weight: 700; margin-bottom: 24px; color: var(--text); }
.query-result-side, .contact-info-side { display: flex; flex-direction: column; gap: 16px; }

/* 结果卡片 */
.result-card { background: var(--bg); border: 1px solid var(--border-soft); border-radius: var(--radius-lg); padding: 28px 32px; box-shadow: var(--shadow-md); }
.result-card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.result-card-header h3 { font-size: 19px; font-weight: 700; color: var(--text); }
.result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.result-item { display: flex; flex-direction: column; gap: 6px; }
.result-item .label { font-size: 13px; color: var(--text-muted); }
.result-item .value { font-size: 15px; color: var(--text); font-weight: 500; }

/* 状态标签 */
.status-tag { display: inline-flex; align-items: center; padding: 4px 12px; border-radius: var(--radius-full); font-size: 12px; font-weight: 600; }
.status-tag.pending { background: #FEF3C7; color: #92400E; }
.status-tag.paid { background: #DCFCE7; color: #166534; }
.status-tag.closed { background: #F1F5F9; color: #64748B; }
.status-tag.refunded { background: #FEE2E2; color: #991B1B; }
.status-tag.inactive { background: #F1F5F9; color: #64748B; }
.status-tag.active { background: #DCFCE7; color: #166534; }
.status-tag.expired { background: #FEE2E2; color: #991B1B; }
.status-tag.banned { background: #FEE2E2; color: #991B1B; }
.status-tag.risk { background: #FEF3C7; color: #92400E; }

/* 授权码卡片 */
.license-card { background: var(--gradient-soft); border: 2px dashed rgba(37,99,235,0.3); border-radius: var(--radius-lg); padding: 28px; text-align: center; }
.license-card .label { color: var(--text-muted); font-size: 13px; margin-bottom: 8px; }
.license-card .code { font-size: 28px; font-weight: 800; background: var(--gradient); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; letter-spacing: 2px; font-family: "Cascadia Code", Consolas, monospace; word-break: break-all; }
.license-meta { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-top: 16px; font-size: 13px; color: var(--text-secondary); align-items: center; }
.license-meta .meta-item { display: inline-flex; align-items: center; gap: 4px; }

/* 空状态 */
.empty-state { text-align: center; padding: 60px 20px; background: var(--bg); border: 2px dashed var(--border); border-radius: var(--radius-lg); }
.empty-icon { font-size: 56px; margin-bottom: 16px; opacity: 0.5; }
.empty-state h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; color: var(--text-secondary); }
.empty-state p { font-size: 14px; color: var(--text-muted); }

/* 联系方式侧边卡片 */
.info-side-card { background: var(--bg); border: 1px solid var(--border-soft); border-radius: var(--radius-lg); padding: 28px; box-shadow: var(--shadow-md); transition: all 0.3s; }
.info-side-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.info-side-card.highlight { background: var(--gradient); border-color: transparent; box-shadow: var(--shadow-glow); }
.info-side-icon { width: 56px; height: 56px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 26px; margin-bottom: 16px; }
.info-side-card h4 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.info-side-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 12px; }
.info-side-card.highlight p { color: rgba(255,255,255,0.85); }
.link-arrow { font-size: 14px; font-weight: 600; color: var(--primary); }
.info-side-card.highlight .link-arrow { color: #fff; }
.notice-list { padding-left: 20px; margin: 8px 0; }
.notice-list li { padding: 4px 0; font-size: 14px; }

/* 结果状态（提交成功/失败） */
.result-state { text-align: center; padding: 32px 16px; }
.result-icon { width: 72px; height: 72px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 36px; margin: 0 auto 20px; font-weight: 700; }
.result-icon.success { background: linear-gradient(135deg, #DCFCE7, #BBF7D0); color: #16A34A; }
.result-icon.error { background: linear-gradient(135deg, #FEE2E2, #FECACA); color: #EF4444; }
.result-state h3 { font-size: 22px; font-weight: 700; margin-bottom: 12px; }
.result-state p { font-size: 15px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 24px; }

/* ===== 支付成功页 ===== */
.success-hero { text-align: center; }
.success-icon {
    width: 96px; height: 96px; border-radius: 50%; margin: 0 auto 24px;
    background: linear-gradient(135deg, #DCFCE7, #BBF7D0);
    display: flex; align-items: center; justify-content: center; font-size: 48px;
}
.success-hero h2 { font-size: 32px; font-weight: 800; margin-bottom: 8px; background: var(--gradient); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.success-subtitle { font-size: 16px; color: var(--text-secondary); margin-bottom: 8px; }
.success-license { margin: 32px 0; }
.success-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 32px; }
.success-notice { text-align: left; display: flex; flex-direction: column; gap: 12px; margin-top: 24px; }
.notice-item { display: flex; align-items: flex-start; gap: 12px; padding: 16px 20px; border-radius: var(--radius); background: var(--bg-soft); border: 1px solid var(--border-soft); }
.notice-icon { font-size: 20px; flex-shrink: 0; }
.notice-item span:last-child { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.success-order { font-size: 13px; color: var(--text-muted); margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--border-soft); }

/* ===== 响应式（双栏） ===== */
@media (max-width: 968px) {
    .download-info-grid { grid-template-columns: 1fr; }
    .requirements-grid { grid-template-columns: 1fr 1fr; }
    .result-grid { grid-template-columns: 1fr; }
    .timeline-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .requirements-grid { grid-template-columns: 1fr; }
    .compare-table { font-size: 14px; }
    .compare-table thead th { padding: 16px 12px; font-size: 15px; }
    .compare-table tbody td { padding: 12px; font-size: 13px; }
}