/* ========== 基础变量 ========== */
:root {
    --primary: #4F46E5;
    --primary-light: #6366F1;
    --primary-dark: #3730A3;
    --primary-bg: #EEF2FF;
    --secondary: #0EA5E9;
    --accent: #10B981;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    --white: #FFFFFF;
    --radius: 12px;
    --radius-lg: 20px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 25px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 40px -5px rgba(0,0,0,0.12);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ========== Reset & 基础 ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
    font-family: var(--font);
    color: var(--gray-800);
    background: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========== 导航栏 ========== */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--gray-200);
    transition: box-shadow 0.3s;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo { display: flex; align-items: center; gap: 10px; }

.logo-icon {
    width: 34px; height: 34px;
    border-radius: 9px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    display: flex; align-items: center; justify-content: center;
    font-size: 18px;
    font-weight: 800;
    color: white;
    letter-spacing: -0.5px;
    flex-shrink: 0;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    text-decoration: none;
    letter-spacing: -0.3px;
}
.logo-divider {
    width: 1px;
    height: 16px;
    background: var(--gray-300);
    margin: 0 2px;
    flex-shrink: 0;
}
.logo-slogan {
    font-size: 12px;
    font-weight: 400;
    color: var(--gray-400);
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.nav-links {
    display: flex;
    gap: 32px;
}
.nav-links a {
    font-size: 15px;
    font-weight: 500;
    color: var(--gray-600);
    transition: color 0.2s;
}
.nav-links a:hover { color: var(--primary); }

.nav-actions { display: flex; align-items: center; gap: 12px; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.2s;
    white-space: nowrap;
}
.btn-text { color: var(--gray-600); }
.btn-text:hover { color: var(--primary); }
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    box-shadow: 0 2px 8px rgba(79,70,229,0.3);
}
.btn-primary:hover { box-shadow: 0 4px 16px rgba(79,70,229,0.4); transform: translateY(-1px); }
.btn-outline {
    border: 1.5px solid var(--gray-300);
    color: var(--gray-700);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-lg { padding: 14px 28px; font-size: 15px; border-radius: 10px; }
.btn-white { background: white; color: var(--primary); font-weight: 600; }
.btn-white:hover { background: var(--gray-50); }
.btn-outline-white { border: 1.5px solid rgba(255,255,255,0.5); color: white; }
.btn-outline-white:hover { background: rgba(255,255,255,0.1); }
.btn-block { display: flex; justify-content: center; width: 100%; }

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}
.mobile-menu-btn span {
    width: 22px; height: 2px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: all 0.3s;
}

/* ========== Hero区域 ========== */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(180deg, var(--primary-bg) 0%, var(--white) 100%);
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -200px; right: -200px;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(79,70,229,0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 100px;
    font-size: 13px;
    color: var(--gray-600);
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}
.badge-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--accent);
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--gray-900);
    margin-bottom: 24px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 50%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 17px;
    line-height: 1.7;
    color: var(--gray-500);
    margin-bottom: 36px;
    max-width: 520px;
}

.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-stats {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--gray-200);
}
.stat-item { }
.stat-number {
    font-size: 32px;
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1;
}
.stat-unit { font-size: 16px; color: var(--primary); font-weight: 600; }
.stat-label { font-size: 13px; color: var(--gray-400); margin-top: 4px; }
.stat-divider { width: 1px; height: 40px; background: var(--gray-200); }

/* Hero可视化 */
.hero-visual { display: flex; justify-content: center; }

.dashboard-preview {
    width: 100%;
    max-width: 520px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--gray-200);
}
.dashboard-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
}
.dashboard-dots { display: flex; gap: 6px; }
.dashboard-dots span {
    width: 10px; height: 10px;
    border-radius: 50%;
}
.dashboard-dots span:nth-child(1) { background: #EF4444; }
.dashboard-dots span:nth-child(2) { background: #F59E0B; }
.dashboard-dots span:nth-child(3) { background: #10B981; }
.dashboard-title { font-size: 13px; color: var(--gray-500); }

.dashboard-content { padding: 24px; }

.score-card {
    text-align: center;
    padding: 16px 20px;
    background: linear-gradient(135deg, var(--primary-bg), #F0F9FF);
    border-radius: var(--radius);
    margin-bottom: 16px;
}
.score-label { font-size: 12px; color: var(--gray-500); margin-bottom: 2px; }
.score-value {
    font-size: 48px;
    font-weight: 800;
    line-height: 1;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.score-change { font-size: 12px; margin-top: 2px; }
.score-change.positive { color: var(--accent); font-weight: 600; }

.platform-scores { display: flex; flex-direction: column; gap: 12px; }
.platform-item { display: flex; align-items: center; gap: 10px; }
.platform-icon {
    width: 28px; height: 28px;
    border-radius: 6px;
    flex-shrink: 0;
    object-fit: contain;
    padding: 3px;
    background: white;
}
.platform-info { flex: 1; min-width: 0; }
.platform-name { font-size: 12px; font-weight: 600; color: var(--gray-700); margin-bottom: 3px; }
.platform-bar {
    height: 5px;
    background: var(--gray-100);
    border-radius: 3px;
    overflow: hidden;
}
.platform-fill {
    height: 100%;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: width 1s ease;
}
.platform-score { font-size: 13px; font-weight: 700; color: var(--gray-900); width: 28px; text-align: right; }

/* ========== 问题区域 ========== */
.problem-section {
    padding: 100px 0;
    background: var(--gray-900);
    color: white;
}
.section-label {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: var(--secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 12px;
}
.section-title {
    font-size: 36px;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}
.problem-section .section-title { color: white; }
.section-subtitle {
    font-size: 16px;
    line-height: 1.7;
    color: rgba(255,255,255,0.6);
    max-width: 600px;
    margin-bottom: 60px;
}

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 40px;
    align-items: center;
}
.comparison-card {
    padding: 32px;
    border-radius: var(--radius-lg);
}
.comparison-card.old {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
}
.comparison-card.new {
    background: linear-gradient(135deg, rgba(79,70,229,0.2), rgba(14,165,233,0.2));
    border: 1px solid rgba(79,70,229,0.3);
}
.comparison-header { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
.comparison-header h3 { font-size: 20px; font-weight: 700; }
.comparison-icon { color: var(--secondary); }

.comparison-list li {
    padding: 8px 0;
    font-size: 15px;
    color: rgba(255,255,255,0.7);
    position: relative;
    padding-left: 24px;
}
.comparison-list li::before {
    content: '';
    position: absolute;
    left: 0; top: 14px;
    width: 12px; height: 2px;
    background: var(--secondary);
    border-radius: 1px;
}

.comparison-arrow { color: var(--secondary); }

/* ========== 功能区域 ========== */
.features-section {
    padding: 100px 0;
    background: var(--white);
}
.features-section .section-label { color: var(--primary); }
.features-section .section-title { color: var(--gray-900); }
.features-section .section-subtitle { color: var(--gray-500); max-width: 600px; margin-left: auto; margin-right: auto; text-align: center; }
.features-section .section-label,
.features-section .section-title { text-align: center; display: block; }
.features-section .section-label { text-align: center; display: block; margin-left: auto; margin-right: auto; }

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 60px;
}
.features-grid-6 {
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.feature-card {
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    transition: all 0.3s;
    background: white;
}
.feature-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}
.feature-icon {
    width: 48px; height: 48px;
    border-radius: 12px;
    background: var(--primary-bg);
    color: var(--primary);
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 20px;
}
.feature-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--gray-900);
}
.feature-card p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--gray-500);
}
.feature-module-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    background: var(--primary-bg);
    padding: 4px 10px;
    border-radius: 6px;
    margin-bottom: 16px;
}
.feature-card-module {
    position: relative;
}
.section-cta {
    text-align: center;
    margin-top: 48px;
}

/* ========== 平台区域 ========== */
.platforms-section {
    padding: 100px 0;
    background: var(--gray-50);
}
.platforms-section .section-label { color: var(--primary); text-align: center; display: block; }
.platforms-section .section-title { color: var(--gray-900); text-align: center; }
.platforms-section .section-subtitle { color: var(--gray-500); text-align: center; max-width: 600px; margin-left: auto; margin-right: auto; }

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 60px;
}

.platform-card {
    padding: 32px;
    border-radius: var(--radius-lg);
    background: white;
    border: 1px solid var(--gray-200);
    text-align: center;
    transition: all 0.3s;
    position: relative;
}
.platform-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.platform-card.coming-soon { opacity: 0.6; }
.platform-logo {
    width: 56px; height: 56px;
    border-radius: 14px;
    margin: 0 auto 16px;
    object-fit: contain;
    padding: 6px;
    background: white;
}
.platform-card h4 { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.platform-mau { font-size: 13px; color: var(--primary); font-weight: 600; margin-bottom: 6px; }
.platform-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    background: rgba(16,185,129,0.1);
    padding: 2px 10px;
    border-radius: 100px;
    margin-bottom: 6px;
}

/* 平台详情页 */
.platforms-detail-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.platform-detail-card {
    padding: 32px 24px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    background: white;
    text-align: center;
    transition: all 0.3s;
}
.platform-detail-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}
.platform-detail-card .platform-logo {
    width: 56px; height: 56px;
    border-radius: 14px;
    margin: 0 auto 16px;
    display: block;
}
.platform-detail-card h2 {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}
.platform-detail-info p {
    font-size: 13px;
    color: var(--gray-500);
    line-height: 1.7;
    margin-bottom: 12px;
}
.platform-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
}
.highlight-tag {
    font-size: 12px;
    color: var(--primary);
    background: var(--primary-bg);
    padding: 4px 10px;
    border-radius: 100px;
    font-weight: 500;
}
.platform-desc { font-size: 13px; color: var(--gray-500); }

/* ========== 评分体系页 ========== */
.scoring-detail-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 60px;
}
.scoring-detail-card {
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    background: white;
    transition: all 0.3s;
}
.scoring-detail-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}
.scoring-score {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 8px;
    line-height: 1;
}
.scoring-detail-card h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
}
.scoring-weight {
    font-size: 13px;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 12px;
}
.scoring-detail-card > p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.7;
    margin-bottom: 16px;
}
.scoring-rules h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 8px;
}
.scoring-rules ul {
    list-style: none;
    padding: 0;
}
.scoring-rules ul li {
    padding: 5px 0 5px 20px;
    font-size: 13px;
    color: var(--gray-600);
    position: relative;
}
.scoring-rules ul li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 600;
}

/* 评分示例 */
.scoring-example {
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    padding: 40px;
}
.scoring-example h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 24px;
    text-align: center;
}
.example-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.example-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 24px;
    border: 1px solid var(--gray-200);
    text-align: center;
}
.example-brand {
    font-size: 14px;
    color: var(--gray-500);
    font-weight: 600;
    margin-bottom: 4px;
}
.example-score {
    font-size: 40px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 16px;
    line-height: 1;
}
.example-breakdown {
    text-align: left;
    margin-bottom: 12px;
}
.breakdown-item {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    font-size: 13px;
    border-bottom: 1px solid var(--gray-100);
}
.breakdown-item:last-child { border-bottom: none; }
.breakdown-item span:first-child { color: var(--gray-600); }
.breakdown-item span:last-child { color: var(--gray-900); font-weight: 600; }
.example-desc {
    font-size: 12px;
    color: var(--gray-500);
    margin-top: 8px;
}
.coming-badge {
    position: absolute;
    top: 16px; right: 16px;
    padding: 4px 10px;
    background: var(--gray-100);
    border-radius: 100px;
    font-size: 11px;
    font-weight: 600;
    color: var(--gray-500);
}

/* ========== 工作原理 ========== */
.how-section {
    padding: 100px 0;
    background: white;
}
.how-section .section-label { color: var(--primary); text-align: center; display: block; }
.how-section .section-title { text-align: center; }

.steps-container {
    display: flex;
    align-items: flex-start;
    gap: 0;
    margin-top: 60px;
    justify-content: center;
}

.step-card {
    flex: 1;
    max-width: 320px;
    padding: 32px 24px;
    text-align: center;
}
.step-number {
    font-size: 40px;
    font-weight: 800;
    color: var(--gray-200);
    line-height: 1;
    margin-bottom: 16px;
}
.step-icon {
    width: 56px; height: 56px;
    border-radius: 14px;
    background: var(--primary-bg);
    color: var(--primary);
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 16px;
}
.step-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.step-card p { font-size: 14px; color: var(--gray-500); line-height: 1.7; }

.step-connector {
    display: flex;
    align-items: center;
    padding-top: 80px;
    color: var(--gray-300);
}

/* ========== 评分算法 ========== */
.algorithm-section {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--gray-900) 0%, #1E1B4B 100%);
    color: white;
}
.algorithm-section .section-label { color: var(--secondary); text-align: center; display: block; }
.algorithm-section .section-title { color: white; text-align: center; }
.algorithm-section .section-subtitle { color: rgba(255,255,255,0.6); text-align: center; max-width: 600px; margin-left: auto; margin-right: auto; }

.algorithm-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 60px;
}
.algorithm-card {
    padding: 32px;
    border-radius: var(--radius-lg);
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    text-align: center;
}
.algorithm-score {
    font-size: 40px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
}
.algorithm-card h4 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.algorithm-card p { font-size: 13px; color: rgba(255,255,255,0.5); line-height: 1.6; }

.algorithm-total {
    text-align: center;
    margin-top: 40px;
    padding-top: 32px;
    border-top: 1px solid rgba(255,255,255,0.1);
}
.total-label { font-size: 14px; color: rgba(255,255,255,0.5); margin-bottom: 4px; }
.total-value {
    font-size: 64px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========== 价格区域 ========== */
.pricing-section {
    padding: 100px 0;
    background: var(--gray-50);
}
.pricing-section .section-label { color: var(--primary); text-align: center; display: block; }
.pricing-section .section-title { text-align: center; }
.pricing-section .section-subtitle { color: var(--gray-500); text-align: center; max-width: 600px; margin-left: auto; margin-right: auto; }

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-top: 60px;
    align-items: start;
}
.pricing-grid-2col {
    grid-template-columns: repeat(2, 1fr);
    max-width: 880px;
    margin-left: auto;
    margin-right: auto;
}

.pricing-card {
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    padding: 36px 32px;
    position: relative;
    transition: all 0.3s;
}
.pricing-card:hover { box-shadow: var(--shadow-lg); }
.pricing-card.featured {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg), 0 0 0 1px var(--primary);
    transform: scale(1.03);
}
.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 16px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    font-size: 12px;
    font-weight: 700;
    border-radius: 100px;
    white-space: nowrap;
}

.pricing-header { margin-bottom: 28px; }
.pricing-header h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
.pricing-price { display: flex; align-items: baseline; gap: 2px; margin-bottom: 8px; }
.price-currency { font-size: 20px; font-weight: 700; color: var(--gray-500); }
.price-amount { font-size: 48px; font-weight: 800; color: var(--gray-900); line-height: 1; }
.price-period { font-size: 14px; color: var(--gray-500); }
.pricing-header p { font-size: 14px; color: var(--gray-500); }

.pricing-features { margin-bottom: 32px; }
.pricing-features li {
    padding: 10px 0;
    font-size: 14px;
    color: var(--gray-600);
    display: flex;
    align-items: center;
    gap: 10px;
}
.pricing-features li svg { color: var(--accent); flex-shrink: 0; }

/* ========== FAQ ========== */
.faq-section {
    padding: 100px 0;
    background: white;
}
.faq-section .section-label { color: var(--primary); text-align: center; display: block; }
.faq-section .section-title { text-align: center; }

.faq-grid {
    max-width: 800px;
    margin: 60px auto 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all 0.3s;
}
.faq-item:hover { border-color: var(--gray-300); }
.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    font-size: 15px;
    font-weight: 600;
    text-align: left;
    transition: color 0.2s;
}
.faq-question:hover { color: var(--primary); }
.faq-question svg { transition: transform 0.3s; flex-shrink: 0; }
.faq-item.active .faq-question svg { transform: rotate(180deg); }

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}
.faq-item.active .faq-answer { max-height: 300px; }
.faq-answer p {
    padding: 0 24px 20px;
    font-size: 14px;
    line-height: 1.7;
    color: var(--gray-500);
}

/* ========== CTA ========== */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    text-align: center;
}
.cta-title {
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}
.cta-subtitle {
    font-size: 16px;
    opacity: 0.7;
    margin-bottom: 36px;
}
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ========== 页脚 ========== */
.footer {
    padding: 64px 0 32px;
    background: var(--gray-900);
    color: rgba(255,255,255,0.6);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 48px;
}
.footer-brand p { font-size: 14px; margin-top: 16px; max-width: 280px; line-height: 1.7; }
.footer-social { display: flex; gap: 12px; margin-top: 20px; }
.footer-social a {
    width: 36px; height: 36px;
    border-radius: 8px;
    background: rgba(255,255,255,0.1);
    display: flex; align-items: center; justify-content: center;
    color: rgba(255,255,255,0.6);
    transition: all 0.2s;
}
.footer-social a:hover { background: var(--primary); color: white; }

.footer-links h4 {
    font-size: 14px;
    font-weight: 700;
    color: white;
    margin-bottom: 16px;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
    font-size: 13px;
    transition: color 0.2s;
}
.footer-links a:hover { color: white; }

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    justify-content: space-between;
    font-size: 13px;
}

/* ========== 定价页 ========== */
.policy-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    max-width: 800px;
    margin: 0 auto;
}
.policy-card {
    background: #fff;
    border: 2px solid var(--border);
    border-radius: 16px;
    padding: 32px;
    text-align: center;
    transition: all 0.3s ease;
}
.policy-card:hover {
    border-color: var(--primary);
    box-shadow: 0 8px 30px rgba(79, 70, 229, 0.1);
    transform: translateY(-2px);
}
.policy-amount {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--text-primary);
}
.policy-amount strong {
    font-size: 28px;
    color: var(--primary);
}
.policy-discount {
    font-size: 18px;
    margin-bottom: 16px;
    color: var(--text-secondary);
}
.policy-discount .highlight {
    color: var(--primary);
    font-weight: 700;
    font-size: 22px;
}
.policy-detail p {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 6px 0;
}
.policy-detail strong {
    color: var(--text-primary);
}

.discount-notice {
    background: linear-gradient(135deg, #f0edff 0%, #e8f4fd 100%);
    border: 1px solid var(--primary-light);
    border-radius: 16px;
    padding: 40px;
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}
.discount-icon {
    font-size: 48px;
    margin-bottom: 16px;
}
.discount-notice p {
    font-size: 18px;
    color: var(--text-primary);
    line-height: 1.6;
}
.discount-notice strong {
    color: var(--primary);
}

.profit-table-wrapper {
    max-width: 800px;
    margin: 0 auto;
}
.profit-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.profit-table thead {
    background: var(--primary);
    color: #fff;
}
.profit-table th {
    padding: 14px 20px;
    font-size: 14px;
    font-weight: 600;
    text-align: center;
}
.profit-table td {
    padding: 14px 20px;
    text-align: center;
    font-size: 15px;
    border-bottom: 1px solid var(--border);
}
.profit-table tbody tr:hover {
    background: #f8f9ff;
}
.profit-highlight {
    color: var(--primary);
    font-weight: 700;
    font-size: 18px;
}

.incentive-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 960px;
    margin: 0 auto;
}
.incentive-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    transition: all 0.3s ease;
}
.incentive-card:hover {
    border-color: var(--primary);
    box-shadow: 0 8px 30px rgba(79, 70, 229, 0.1);
    transform: translateY(-2px);
}
.incentive-icon {
    color: var(--primary);
    margin-bottom: 16px;
}
.incentive-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--text-primary);
}
.incentive-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}
.incentive-card .highlight {
    color: var(--primary);
    font-weight: 700;
}

.pricing-bonus {
    background: #f0edff;
    border-radius: 8px;
    padding: 12px;
    text-align: center;
    margin-bottom: 20px;
    font-size: 14px;
    color: var(--primary);
}
.pricing-saving {
    font-size: 13px;
    color: #22c55e;
    margin-top: 4px;
}


/* ========== 响应式 ========== */
@media (max-width: 1024px) {
    .hero .container { grid-template-columns: 1fr; gap: 40px; }
    .hero-visual { order: -1; }
    .hero-title { font-size: 40px; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .platforms-grid { grid-template-columns: repeat(2, 1fr); }
    .pricing-grid { grid-template-columns: 1fr; max-width: 480px; margin-left: auto; margin-right: auto; }
    .pricing-card.featured { transform: none; }
    .algorithm-grid { grid-template-columns: repeat(2, 1fr); }
    .platforms-grid { grid-template-columns: repeat(2, 1fr); }
    .feature-detail-grid { grid-template-columns: repeat(2, 1fr); }
    .platforms-detail-grid { grid-template-columns: repeat(2, 1fr); }
    .scoring-detail-grid { grid-template-columns: 1fr; }
    .example-grid { grid-template-columns: 1fr; }
    .policy-grid { grid-template-columns: 1fr; max-width: 400px; margin-left: auto; margin-right: auto; }
    .incentive-grid { grid-template-columns: 1fr; max-width: 400px; margin-left: auto; margin-right: auto; }
    .profit-table th, .profit-table td { padding: 10px 12px; font-size: 13px; }
    .footer-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    .nav-links, .nav-actions { display: none; }
    .mobile-menu-btn { display: flex; }
    .hero { padding: 120px 0 60px; }
    .hero-title { font-size: 32px; }
    .hero-stats { flex-direction: column; align-items: flex-start; gap: 16px; }
    .stat-divider { width: 100%; height: 1px; }
    .comparison-grid { grid-template-columns: 1fr; }
    .comparison-arrow { transform: rotate(90deg); }
    .features-grid { grid-template-columns: 1fr; }
    .platforms-grid { grid-template-columns: repeat(2, 1fr); }
    .feature-detail-grid { grid-template-columns: 1fr; }
    .platforms-detail-grid { grid-template-columns: repeat(2, 1fr); }
    .scoring-detail-grid { grid-template-columns: 1fr; }
    .example-grid { grid-template-columns: 1fr; }
    .policy-grid { grid-template-columns: 1fr; }
    .incentive-grid { grid-template-columns: 1fr; }
    .steps-container { flex-direction: column; align-items: center; }
    .step-connector { transform: rotate(90deg); padding: 0; }
    .algorithm-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-bottom { flex-direction: column; gap: 8px; }
    .section-title { font-size: 28px; }
}

/* ========== 滚动动画 ========== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========== 子页面通用 ========== */
.page-header {
    padding: 140px 0 60px;
    background: linear-gradient(180deg, var(--primary-bg) 0%, var(--white) 100%);
    text-align: center;
}
.page-header .section-label { display: block; margin-bottom: 12px; }
.page-title {
    font-size: 44px;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--gray-900);
    margin-bottom: 16px;
}
.page-subtitle {
    font-size: 17px;
    color: var(--gray-500);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

.content-section {
    padding: 80px 0;
}

/* 内容卡片网格 */
.content-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.content-card {
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    background: white;
    transition: all 0.3s;
}
.content-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}
.content-card h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}
.content-card p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.7;
    margin-bottom: 16px;
}
.content-card ul {
    list-style: none;
    padding: 0;
}
.content-card ul li {
    padding: 6px 0 6px 20px;
    font-size: 14px;
    color: var(--gray-600);
    position: relative;
}
.content-card ul li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 600;
}
.content-card ul li strong {
    color: var(--gray-900);
}

/* ========== 功能详情页 ========== */
.feature-detail-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.feature-detail-card {
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    background: white;
    transition: all 0.3s;
}
.feature-detail-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}
.feature-detail-icon {
    width: 56px; height: 56px;
    border-radius: 14px;
    background: var(--primary-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--primary);
}
.feature-detail-card h2,
.feature-detail-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}
.feature-detail-desc {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.7;
    margin-bottom: 16px;
}
.feature-detail-list {
    list-style: none;
    padding: 0;
    margin-bottom: 16px;
}
.feature-detail-list li {
    padding: 6px 0 6px 20px;
    font-size: 14px;
    color: var(--gray-600);
    position: relative;
}
.feature-detail-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 600;
}

/* 功能模块分区 */
.feature-module {
    margin-bottom: 64px;
}
.feature-module:last-child {
    margin-bottom: 0;
}
.module-header {
    display: flex;
    align-items: flex-start;
    gap: 24px;
    margin-bottom: 40px;
    padding-bottom: 24px;
    border-bottom: 2px solid var(--gray-100);
}
.module-number {
    font-size: 48px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    min-width: 80px;
}
.module-info {
    flex: 1;
}
.module-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}
.module-desc {
    font-size: 15px;
    color: var(--gray-500);
    line-height: 1.6;
}
.feature-detail-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}
.feature-detail-note {
    font-size: 13px;
    color: var(--secondary);
    background: #FFF8F0;
    border: 1px solid #FFE4C4;
    border-radius: 8px;
    padding: 10px 14px;
    margin-bottom: 16px;
    line-height: 1.6;
}

/* 指标卡片 */
.metric-card {
    padding: 32px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--primary-bg), #F0F9FF);
    border: 1px solid var(--gray-200);
    text-align: center;
}
.metric-label {
    font-size: 14px;
    color: var(--gray-500);
    margin-bottom: 8px;
}
.metric-value {
    font-size: 40px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 4px;
}
.metric-desc {
    font-size: 13px;
    color: var(--gray-400);
}

/* GEO指南页 */
.guide-content {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 48px;
}
.guide-toc {
    position: sticky;
    top: 100px;
    align-self: start;
}
.guide-toc h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 16px;
}
.guide-toc ul { list-style: none; padding: 0; }
.guide-toc li { margin-bottom: 8px; }
.guide-toc a {
    font-size: 14px;
    color: var(--gray-500);
    transition: color 0.2s;
}
.guide-toc a:hover { color: var(--primary); }
.guide-body article {
    margin-bottom: 48px;
}
.guide-body h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--gray-100);
}
.guide-body p {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 12px;
}
.guide-body ul, .guide-body ol {
    padding-left: 24px;
    margin-bottom: 12px;
}
.guide-body li {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 6px;
}

/* 对比表格 */
.compare-table {
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    overflow: hidden;
    margin: 16px 0;
}
.compare-row {
    display: grid;
    grid-template-columns: 100px 1fr 1fr;
    gap: 0;
}
.compare-row span {
    padding: 12px 16px;
    font-size: 14px;
    color: var(--gray-600);
    border-bottom: 1px solid var(--gray-100);
}
.compare-row.header span {
    font-weight: 700;
    color: var(--gray-900);
    background: var(--gray-50);
}

/* 策略步骤 */
.strategy-steps {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.strategy-step {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}
.step-num {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px;
    font-weight: 800;
    flex-shrink: 0;
}
.strategy-step h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 6px;
}
.strategy-step p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.7;
}

/* 报告列表 */
.report-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.report-card {
    padding: 28px 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    background: white;
    position: relative;
    transition: all 0.3s;
}
.report-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow);
}
.report-badge {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: white;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    padding: 2px 10px;
    border-radius: 100px;
    margin-bottom: 12px;
}
.report-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}
.report-card p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.7;
    margin-bottom: 12px;
}
.report-meta {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--gray-400);
    margin-bottom: 16px;
}
.btn-sm { padding: 6px 16px; font-size: 13px; }

/* 案例卡片 */
.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.case-card {
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    background: white;
    transition: all 0.3s;
}
.case-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}
.case-industry {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    background: var(--primary-bg);
    padding: 2px 10px;
    border-radius: 100px;
    margin-bottom: 16px;
}
.case-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 10px;
}
.case-card > p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.7;
    margin-bottom: 20px;
}
.case-metrics {
    display: flex;
    gap: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--gray-100);
}
.metric .metric-value {
    font-size: 24px;
    font-weight: 800;
    display: block;
}
.metric .metric-label {
    font-size: 12px;
}

/* 博客列表 */
.blog-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.blog-card {
    padding: 28px 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    background: white;
    transition: all 0.3s;
}
.blog-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow);
}
.blog-date {
    font-size: 13px;
    color: var(--gray-400);
    margin-bottom: 8px;
}
.blog-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}
.blog-card h3 a { color: var(--gray-900); transition: color 0.2s; }
.blog-card h3 a:hover { color: var(--primary); }
.blog-card > p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.7;
    margin-bottom: 12px;
}
.blog-tags {
    display: flex;
    gap: 8px;
}
.blog-tags span {
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    background: var(--primary-bg);
    padding: 2px 10px;
    border-radius: 100px;
}

/* 关于页 */
.about-content {
    max-width: 800px;
    margin: 0 auto;
}
.about-block {
    margin-bottom: 60px;
}
.about-block h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 16px;
}
.about-block > p {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.8;
}
.why-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 24px;
}
.why-card {
    padding: 24px;
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
    background: var(--gray-50);
}
.why-card h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}
.why-card p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.7;
}

/* 联系页 */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}
.contact-form-card, .contact-info-card {
    padding: 36px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    background: white;
}
.contact-form-card h2, .contact-info-card h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}
.contact-form-card > p {
    font-size: 14px;
    color: var(--gray-500);
    margin-bottom: 24px;
}
.form-group {
    margin-bottom: 16px;
}
.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 6px;
}
.form-group input, .form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid var(--gray-200);
    border-radius: 8px;
    font-size: 14px;
    color: var(--gray-800);
    transition: border-color 0.2s;
    outline: none;
    font-family: inherit;
}
.form-group input:focus, .form-group textarea:focus {
    border-color: var(--primary);
}
.form-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--gray-600);
}
.form-link {
    font-size: 13px;
    color: var(--primary);
    font-weight: 500;
}
.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    margin-bottom: 24px;
}
.contact-item svg { color: var(--primary); flex-shrink: 0; margin-top: 2px; }
.contact-item h4 {
    font-size: 14px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
}
.contact-item p {
    font-size: 14px;
    color: var(--gray-500);
}

/* 招聘页 */
.careers-content {
    max-width: 800px;
    margin: 0 auto;
}
.careers-intro {
    margin-bottom: 48px;
}
.careers-intro h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 16px;
}
.careers-intro p {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.8;
}
.positions-list h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 24px;
}
.position-card {
    padding: 28px;
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
    margin-bottom: 16px;
    transition: all 0.3s;
}
.position-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow);
}
.position-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}
.position-tags {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}
.position-tags span {
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    background: var(--primary-bg);
    padding: 2px 10px;
    border-radius: 100px;
}
.position-card p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.7;
}
.careers-cta {
    text-align: center;
    margin-top: 40px;
    font-size: 15px;
    color: var(--gray-500);
}
.careers-cta a { color: var(--primary); font-weight: 600; }

/* 帮助中心 */
.help-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.help-category {
    padding: 28px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    background: white;
}
.help-category h2 {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-bg);
}
.help-category ul { list-style: none; padding: 0; }
.help-category li { margin-bottom: 8px; }
.help-category a {
    font-size: 14px;
    color: var(--gray-600);
    transition: color 0.2s;
}
.help-category a:hover { color: var(--primary); }

/* FAQ子页 */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* 法律条款 */
.legal-content {
    max-width: 800px;
    margin: 0 auto;
}
.legal-updated {
    font-size: 14px;
    color: var(--gray-400);
    margin-bottom: 32px;
}
.legal-content h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    margin-top: 32px;
    margin-bottom: 12px;
}
.legal-content p {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 8px;
}

/* 登录/注册 */
.auth-body {
    background: linear-gradient(135deg, var(--primary-bg), #F0F9FF);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}
.auth-container {
    width: 100%;
    max-width: 420px;
}
.auth-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 40px 36px;
    box-shadow: var(--shadow-xl);
    text-align: center;
}
.auth-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 24px;
}
.auth-card h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}
.auth-card > p {
    font-size: 14px;
    color: var(--gray-500);
    margin-bottom: 28px;
}
.auth-form .form-group {
    text-align: left;
}
.auth-form .btn-primary {
    margin-top: 8px;
}
.auth-switch {
    font-size: 14px;
    color: var(--gray-500);
    margin-top: 20px;
}
.auth-switch a { color: var(--primary); font-weight: 600; }

/* 合作伙伴 */
.partners-content {
    max-width: 800px;
    margin: 0 auto;
}
.partners-intro h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 16px;
}
.partners-intro p {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 16px;
}
.partners-intro ul {
    list-style: none;
    padding: 0;
}
.partners-intro li {
    padding: 8px 0 8px 20px;
    font-size: 15px;
    color: var(--gray-600);
    position: relative;
}
.partners-intro li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 600;
}
.partners-intro li strong {
    color: var(--gray-900);
}
.partners-cta {
    text-align: center;
    margin-top: 48px;
    font-size: 15px;
    color: var(--gray-500);
}
.partners-cta a { color: var(--primary); font-weight: 600; }

/* 子页面响应式 */
@media (max-width: 1024px) {
    .guide-content { grid-template-columns: 1fr; }
    .guide-toc { position: static; margin-bottom: 32px; }
    .contact-grid { grid-template-columns: 1fr; }
    .case-grid { grid-template-columns: 1fr; }
    .help-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .page-title { font-size: 32px; }
    .content-grid { grid-template-columns: 1fr; }
    .why-grid { grid-template-columns: 1fr; }
    .help-grid { grid-template-columns: 1fr; }
    .case-metrics { flex-direction: column; gap: 12px; }
}