/* ========== 公共基础样式 ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    color: #333;
    background: #f8fafc;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ========== 顶部导航栏 ========== */
.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    padding: 0 40px;
    transition: all 0.3s ease;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo-icon {
    width: 36px; height: 36px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    border-radius: 10px;
    display: flex;
    align-items: center; justify-content: center;
    color: #fff; font-weight: 700; font-size: 18px;
}

.logo-text {
    font-size: 20px; font-weight: 700;
    color: #1e293b; letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    color: #64748b; text-decoration: none;
    font-size: 15px; font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover { color: #3b82f6; }
.nav-links a.active { color: #3b82f6; }

/* 导航栏下拉菜单 */
.nav-dropdown { position: relative; }

.nav-dropdown-toggle {
    display: flex; align-items: center; gap: 4px;
    cursor: pointer; color: #64748b;
    font-size: 15px; font-weight: 500;
    transition: color 0.2s; user-select: none;
}

.nav-dropdown-toggle:hover { color: #3b82f6; }

.nav-dropdown-toggle .arrow {
    font-size: 12px; transition: transform 0.3s;
}

.nav-dropdown:hover .arrow { transform: rotate(180deg); }

.nav-dropdown-menu {
    position: absolute; top: calc(100% + 10px); left: 50%;
    transform: translateX(-50%) translateY(4px);
    background: #fff; border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
    border: 1px solid #f1f5f9; padding: 8px; min-width: 220px;
    opacity: 0; visibility: hidden; transition: all 0.2s ease; z-index: 1001;
}

.nav-dropdown:hover .nav-dropdown-menu {
    opacity: 1; visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.nav-dropdown-item {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 14px; border-radius: 8px;
    text-decoration: none; transition: background 0.2s; cursor: pointer;
}

.nav-dropdown-item:hover { background: #f8fafc; }

.nav-dropdown-icon {
    width: 36px; height: 36px; border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; flex-shrink: 0;
}

.nav-dropdown-icon.win { background: #eff6ff; }
.nav-dropdown-icon.mac { background: #f5f3ff; }

.nav-dropdown-text { display: flex; flex-direction: column; }
.nav-dropdown-title { font-size: 14px; font-weight: 600; color: #1e293b; }
.nav-dropdown-desc { font-size: 12px; color: #94a3b8; }

/* ========== 通用按钮 ========== */
.btn-primary {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 10px 24px;
    background: linear-gradient(135deg, #3b82f6, #6366f1);
    color: #fff !important; border: none; border-radius: 8px;
    font-size: 14px; font-weight: 600; cursor: pointer;
    text-decoration: none; transition: all 0.3s;
    box-shadow: 0 4px 14px rgba(59, 130, 246, 0.35);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.45);
}

.btn-primary-large {
    padding: 14px 36px; font-size: 16px; border-radius: 10px;
}

.btn-outline {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 14px 36px; background: #fff;
    color: #3b82f6; border: 2px solid #e2e8f0;
    border-radius: 10px; font-size: 16px; font-weight: 600;
    cursor: pointer; text-decoration: none; transition: all 0.3s;
}

.btn-outline:hover { border-color: #3b82f6; background: #f8faff; }

.btn-more {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 12px 32px;
    background: linear-gradient(135deg, #3b82f6, #6366f1);
    color: #fff; border-radius: 8px; text-decoration: none;
    font-size: 15px; font-weight: 600; transition: all 0.3s;
}

.btn-more:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(59, 130, 246, 0.35);
}

/* ========== 公共区块样式 ========== */
.section-header {
    text-align: center; margin-bottom: 60px;
}

.section-header h2 {
    font-size: 34px; font-weight: 800; color: #0f172a;
    margin-bottom: 12px; letter-spacing: -0.5px;
}

.section-header p { font-size: 16px; color: #64748b; }

.highlight {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========== 首页 - 英雄区 ========== */
.hero {
    padding: 140px 20px 100px;
    background: linear-gradient(180deg, #eff6ff 0%, #f8fafc 100%);
    position: relative; overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute; top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(ellipse at 30% 20%, rgba(59, 130, 246, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 80%, rgba(139, 92, 246, 0.06) 0%, transparent 60%);
    pointer-events: none;
}

.hero-content {
    max-width: 1200px; margin: 0 auto; position: relative;
    display: flex; align-items: center; gap: 60px;
}

.hero-left { flex: 1; text-align: left; }
.hero-right { flex: 1; display: flex; align-items: center; justify-content: center; }

.hero-banner {
    width: 100%; max-width: 870px; border-radius: 16px;
    overflow: hidden; box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
    position: relative;
}

.hero-banner img {
    width: 100%; height: 380px; object-fit: cover; display: block;
}

.hero-banner-dots {
    position: absolute; bottom: 16px; left: 50%;
    transform: translateX(-50%); display: flex; gap: 8px;
}

.hero-banner-dot {
    width: 10px; height: 10px; border-radius: 50%;
    background: rgba(255, 255, 255, 0.5); cursor: pointer;
    transition: all 0.3s;
}

.hero-banner-dot.active {
    background: #fff; width: 28px; border-radius: 5px;
}

.hero-badge {
    display: inline-block; padding: 6px 16px;
    background: rgba(59, 130, 246, 0.1); color: #3b82f6;
    border-radius: 20px; font-size: 13px; font-weight: 600;
    margin-bottom: 24px; letter-spacing: 0.5px;
}

.hero h1 {
    font-size: 48px; font-weight: 800; color: #0f172a;
    line-height: 1.2; margin-bottom: 20px; letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 18px; color: #64748b;
    margin-bottom: 40px; line-height: 1.8;
}

.hero-platforms {
    display: flex; align-items: center; justify-content: flex-start;
    gap: 16px; flex-wrap: wrap; margin-bottom: 40px;
}

.platform-tag {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 16px; background: #fff;
    border: 1px solid #e2e8f0; border-radius: 8px;
    font-size: 14px; color: #475569; font-weight: 500;
    transition: all 0.2s;
}

.platform-tag:hover {
    border-color: #3b82f6;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.12);
}

.platform-dot {
    width: 8px; height: 8px; border-radius: 50%; display: inline-block;
}

.hero-actions {
    display: flex; align-items: center; justify-content: flex-start;
    gap: 16px; flex-wrap: wrap;
}

/* ========== 首页 - 核心功能 ========== */
.features { padding: 80px 20px; background: #f8fafc; }

.features-grid {
    max-width: 1100px; margin: 0 auto;
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}

.feature-card {
    background: #fff; border-radius: 16px; padding: 32px 28px;
    border: 1px solid #f1f5f9; transition: all 0.3s;
    position: relative; overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
    border-color: #e2e8f0;
}

.feature-icon {
    width: 52px; height: 52px; border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 20px; font-size: 24px;
}

.feature-icon.blue { background: #eff6ff; color: #3b82f6; }
.feature-icon.purple { background: #f5f3ff; color: #8b5cf6; }
.feature-icon.green { background: #ecfdf5; color: #10b981; }
.feature-icon.orange { background: #fff7ed; color: #f97316; }
.feature-icon.pink { background: #fdf2f8; color: #ec4899; }
.feature-icon.teal { background: #f0fdfa; color: #14b8a6; }

.feature-card h3 {
    font-size: 20px; font-weight: 700; color: #1e293b;
    margin-bottom: 12px; text-align: center;
}

.feature-card .feature-desc {
    font-size: 14px; color: #64748b; line-height: 1.7;
    text-align: center; margin-bottom: 16px;
}

.feature-card .feature-list { list-style: none; padding: 0; margin: 0; }

.feature-card .feature-list li {
    font-size: 13px; color: #64748b; line-height: 1.8;
    padding-left: 18px; position: relative;
}

.feature-card .feature-list li::before {
    content: '\2713'; position: absolute; left: 0;
    color: #10b981; font-weight: 600;
}

/* 工作流 */
.workflow { max-width: 1100px; margin: 60px auto 0; text-align: center; }

.workflow h3 {
    font-size: 28px; font-weight: 800; color: #0f172a;
    margin-bottom: 48px; letter-spacing: -0.5px;
}

.workflow-steps {
    display: flex; align-items: flex-start;
    justify-content: center; gap: 16px;
}

.workflow-step { flex: 1; text-align: center; max-width: 160px; }

.step-num {
    width: 48px; height: 48px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 18px; font-weight: 700;
    margin: 0 auto 16px;
}

.step-num.blue { background: #3b82f6; }
.step-num.purple { background: #8b5cf6; }
.step-num.green { background: #22c55e; }
.step-num.orange { background: #f97316; }
.step-num.indigo { background: #6366f1; }

.workflow-step h4 { font-size: 15px; font-weight: 700; color: #1e293b; margin-bottom: 6px; }
.workflow-step p { font-size: 13px; color: #94a3b8; }

.workflow-arrow { flex-shrink: 0; color: #cbd5e1; font-size: 20px; margin-top: 12px; }

/* ========== 首页 - 套餐展示 ========== */
.pricing { padding: 80px 20px; background: #fff; }

.pricing-grid {
    max-width: 1280px; margin: 0 auto;
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 20px; align-items: stretch;
}

.pricing-card {
    background: linear-gradient(180deg, #4f46e5 0%, #7c3aed 100%);
    border-radius: 16px; padding: 32px 24px;
    transition: all 0.3s; position: relative;
    display: flex; flex-direction: column;
    color: #fff; overflow: hidden;
}

.pricing-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 60px rgba(79, 70, 229, 0.3);
}

.pricing-card.featured {
    transform: scale(1.03);
    box-shadow: 0 12px 48px rgba(79, 70, 229, 0.35);
}

.pricing-card.featured:hover {
    transform: scale(1.03) translateY(-6px);
    box-shadow: 0 24px 64px rgba(79, 70, 229, 0.45);
}

.pricing-tag {
    position: absolute; top: 12px; left: 12px;
    padding: 4px 12px; background: #fbbf24;
    color: #1e293b; border-radius: 6px;
    font-size: 12px; font-weight: 700;
}

.pricing-tag-alt {
    position: absolute; top: 12px; right: 12px;
    padding: 4px 10px; background: rgba(255, 255, 255, 0.15);
    color: #fff; border-radius: 6px;
    font-size: 11px; font-weight: 600;
}

.pricing-name {
    font-size: 20px; font-weight: 700; color: #fff;
    margin-bottom: 8px; margin-top: 8px;
}

.pricing-desc {
    font-size: 13px; color: rgba(255, 255, 255, 0.75);
    margin-bottom: 20px; line-height: 1.6; min-height: 40px;
}

.pricing-price { margin-bottom: 20px; }

.pricing-amount { font-size: 36px; font-weight: 800; color: #fff; line-height: 1; }

.pricing-amount .currency { font-size: 20px; font-weight: 600; }

.pricing-amount .period {
    font-size: 14px; font-weight: 400;
    color: rgba(255, 255, 255, 0.7);
}

.pricing-btn {
    display: block; width: 100%; padding: 12px 0;
    text-align: center; border-radius: 8px;
    font-size: 14px; font-weight: 600; cursor: pointer;
    text-decoration: none; transition: all 0.3s;
    background: #fff; color: #4f46e5;
    border: none; margin-bottom: 24px;
}

.pricing-btn:hover { background: #f1f5f9; transform: translateY(-1px); }

.pricing-features { list-style: none; flex: 1; }

.pricing-features li {
    padding: 6px 0; font-size: 13px;
    color: rgba(255, 255, 255, 0.85);
    display: flex; align-items: flex-start;
    gap: 8px; line-height: 1.5;
}

.pricing-features li::before {
    content: '\2713'; flex-shrink: 0;
    width: 16px; height: 16px;
    background: rgba(255, 255, 255, 0.2); color: #fff;
    border-radius: 50%; display: flex;
    align-items: center; justify-content: center;
    font-size: 10px; font-weight: 700; margin-top: 2px;
}

/* ========== 首页 - 价值主张 ========== */
.value-prop { padding: 80px 20px; background: #fff; }

.value-inner { max-width: 1100px; margin: 0 auto; text-align: center; }

.value-inner h2 {
    font-size: 34px; font-weight: 800; color: #0f172a;
    margin-bottom: 12px; letter-spacing: -0.5px;
}

.value-inner > p {
    font-size: 16px; color: #64748b;
    margin-bottom: 48px; line-height: 1.8;
}

.value-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 24px; text-align: left;
}

.value-card {
    display: flex; align-items: flex-start; gap: 16px;
    padding: 28px 24px; border-radius: 16px;
    background: #fff; border: 1px solid #f1f5f9;
    transition: all 0.3s;
}

.value-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    border-color: #e2e8f0;
}

.value-icon {
    flex-shrink: 0; width: 48px; height: 48px;
    border-radius: 12px; display: flex;
    align-items: center; justify-content: center; font-size: 22px;
}

.value-icon.blue { background: #eff6ff; }
.value-icon.purple { background: #f5f3ff; }
.value-icon.green { background: #ecfdf5; }
.value-icon.orange { background: #fff7ed; }
.value-icon.pink { background: #fdf2f8; }
.value-icon.yellow { background: #fefce8; }
.value-icon.teal { background: #f0fdfa; }
.value-icon.gray { background: #f8fafc; }
.value-icon.red { background: #fef2f2; }

.value-text h3 {
    font-size: 16px; font-weight: 700; color: #1e293b;
    margin-bottom: 6px;
}

.value-text p { font-size: 13px; color: #64748b; line-height: 1.7; }

.value-banner {
    margin-top: 48px; padding: 48px 40px; border-radius: 20px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: #fff; text-align: center;
}

.value-banner h3 { font-size: 26px; font-weight: 700; margin-bottom: 12px; }

.value-banner > p {
    font-size: 15px; color: rgba(255, 255, 255, 0.85);
    margin-bottom: 36px;
}

.banner-stats {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 24px; max-width: 800px; margin: 0 auto;
}

.banner-stat .stat-main { font-size: 36px; font-weight: 800; margin-bottom: 4px; }
.banner-stat .stat-title { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.banner-stat .stat-desc { font-size: 13px; color: rgba(255, 255, 255, 0.7); }

/* ========== 首页 - 应用案例 ========== */
.industries { padding: 80px 20px; background: #f8fafc; }

.industries-grid {
    max-width: 1100px; margin: 0 auto;
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}

.industry-card {
    background: #fff; border-radius: 16px; overflow: hidden;
    border: 1px solid #f1f5f9; transition: all 0.3s; cursor: default;
}

.industry-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.industry-card-img {
    width: 100%; height: 180px; object-fit: cover; display: block;
}

.industry-card-body { padding: 24px 20px; text-align: center; }

.industry-card-tag { font-size: 13px; font-weight: 600; margin-bottom: 8px; }

.industry-card-tag.red { color: #ef4444; }
.industry-card-tag.orange { color: #f97316; }
.industry-card-tag.green { color: #10b981; }

.industry-card h4 {
    font-size: 18px; font-weight: 700; color: #1e293b;
    margin-bottom: 8px;
}

.industry-card .stats { font-size: 13px; color: #64748b; margin-bottom: 12px; }

.industry-card .location {
    font-size: 13px; color: #94a3b8;
    display: flex; align-items: center;
    justify-content: center; gap: 4px;
}

.industries-more { text-align: center; margin-top: 40px; }

/* ========== 首页 - CTA ========== */
.cta {
    padding: 80px 20px; text-align: center;
    background: linear-gradient(135deg, #1e293b, #0f172a); color: #fff;
}

.cta h2 {
    font-size: 42px; color: #ffffff; font-weight: 800;
    margin-bottom: 16px; letter-spacing: -0.5px;
}

.cta p { font-size: 16px; color: #94a3b8; margin-bottom: 36px; line-height: 1.8; }

.cta .btn-primary-large {
    background: linear-gradient(135deg, #3b82f6, #6366f1);
    box-shadow: 0 4px 24px rgba(59, 130, 246, 0.4);
}

.cta .btn-primary-large:hover {
    box-shadow: 0 6px 32px rgba(59, 130, 246, 0.55);
    transform: translateY(-2px);
}

/* ========== 公共底部 ========== */
.footer { background: #0f172a; color: #94a3b8; padding: 0; }

.footer-main {
    max-width: 1200px; margin: 0 auto;
    padding: 60px 40px 40px;
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr 1.2fr;
    gap: 40px;
}

.footer-brand .brand-name {
    display: flex; align-items: center; gap: 10px;
    font-size: 18px; font-weight: 700; color: #fff;
    margin-bottom: 16px;
}

.footer-brand .brand-icon {
    width: 32px; height: 32px;
    background: linear-gradient(135deg, #f59e0b, #f97316);
    border-radius: 8px; display: flex;
    align-items: center; justify-content: center;
    color: #fff; font-size: 14px; font-weight: 700;
}

.footer-brand p { font-size: 13px; line-height: 1.8; color: #94a3b8; }

.footer-col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 20px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a { color: #94a3b8; text-decoration: none; font-size: 13px; transition: color 0.2s; }
.footer-col ul li a:hover { color: #3b82f6; }
.footer-col p { font-size: 13px; line-height: 1.8; margin-bottom: 8px; }
.footer-col ul.platform-list { list-style: disc; padding-left: 16px; }
.footer-col ul.platform-list li { margin-bottom: 8px; color: #94a3b8; font-size: 13px; }

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 20px 40px; text-align: center;
    font-size: 13px; color: #64748b;
}

.footer-bottom a { color: #94a3b8; text-decoration: none; margin: 0 12px; transition: color 0.2s; }
.footer-bottom a:hover { color: #3b82f6; }

/* ========== 登录页 ========== */
.login-page {
    min-height: 100vh; display: flex;
    align-items: center; justify-content: center;
    padding: 100px 20px 40px;
}

.login-container { width: 100%; max-width: 420px; }
.login-header { text-align: center; margin-bottom: 40px; }
.login-header h1 { font-size: 32px; font-weight: 800; color: #3b82f6; margin-bottom: 8px; }
.login-header p { font-size: 16px; color: #64748b; }

.login-form {
    background: #fff; border-radius: 16px;
    padding: 40px 36px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

.form-group { margin-bottom: 24px; }
.form-group label { display: block; font-size: 14px; font-weight: 500; color: #1e293b; margin-bottom: 8px; }

.form-group label .tip { color: #f59e0b; font-size: 13px; font-weight: 400; margin-left: 6px; }
.form-group label .tip-icon { margin-right: 2px; }

.form-input {
    width: 100%; padding: 12px 16px;
    border: 1px solid #e2e8f0; border-radius: 10px;
    font-size: 14px; color: #1e293b;
    background: #fff; transition: all 0.2s; outline: none;
}

.form-input:focus {
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-input::placeholder { color: #94a3b8; }

.input-wrap { position: relative; }
.input-wrap .form-input { padding-right: 44px; }

.input-eye {
    position: absolute; right: 14px; top: 50%;
    transform: translateY(-50%); cursor: pointer;
    color: #94a3b8; font-size: 18px; user-select: none;
}

.input-eye:hover { color: #64748b; }

.remember-row {
    display: flex; align-items: center; gap: 8px; margin-bottom: 24px;
}

.remember-row input[type="checkbox"] { width: 16px; height: 16px; accent-color: #3b82f6; cursor: pointer; }
.remember-row label { font-size: 14px; color: #475569; cursor: pointer; user-select: none; }

.btn-login {
    width: 100%; padding: 14px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: #fff; border: none; border-radius: 10px;
    font-size: 16px; font-weight: 600; cursor: pointer;
    transition: all 0.3s;
}

.btn-login:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(59, 130, 246, 0.35); }

.login-footer { text-align: center; margin-top: 24px; }

.login-links {
    display: flex; align-items: center;
    justify-content: center; gap: 16px; margin-bottom: 12px;
}

.login-links a { font-size: 14px; color: #3b82f6; text-decoration: none; }
.login-links a:hover { text-decoration: underline; }

.login-links .divider { width: 1px; height: 14px; background: #e2e8f0; }

.back-home {
    display: inline-flex; align-items: center; gap: 4px;
    font-size: 14px; color: #64748b; text-decoration: none;
}

.back-home:hover { color: #3b82f6; }

/* ========== 注册页 ========== */
.register-page {
    min-height: 100vh; display: flex;
    align-items: center; justify-content: center;
    padding: 100px 20px 40px;
}

.register-container { width: 100%; max-width: 460px; }
.register-header { text-align: center; margin-bottom: 40px; }
.register-header h1 { font-size: 32px; font-weight: 800; color: #3b82f6; margin-bottom: 8px; }
.register-header p { font-size: 16px; color: #64748b; }

.register-form {
    background: #fff; border-radius: 16px;
    padding: 40px 36px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

.btn-register {
    width: 100%; padding: 14px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: #fff; border: none; border-radius: 10px;
    font-size: 16px; font-weight: 600; cursor: pointer;
    transition: all 0.3s;
}

.btn-register:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(59, 130, 246, 0.35); }

.register-footer { text-align: center; margin-top: 24px; }
.register-footer p { font-size: 14px; color: #64748b; margin-bottom: 8px; }
.register-footer a { color: #3b82f6; text-decoration: none; font-weight: 500; }
.register-footer a:hover { text-decoration: underline; }

/* ========== 案例列表页 ========== */
.page-header {
    padding: 120px 20px 60px;
    background: linear-gradient(180deg, #eff6ff 0%, #f8fafc 100%);
    text-align: center;
}

.page-header h1 {
    font-size: 42px; font-weight: 800; color: #0f172a;
    margin-bottom: 16px; letter-spacing: -1px;
}

.page-header p {
    font-size: 16px; color: #64748b;
    max-width: 600px; margin: 0 auto; line-height: 1.8;
}

.cases-section { padding: 40px 20px 80px; background: #f8fafc; }
.cases-container { max-width: 1100px; margin: 0 auto; }

.cases-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 24px; margin-bottom: 48px;
}

.case-card {
    background: #fff; border-radius: 16px; overflow: hidden;
    border: 1px solid #f1f5f9; transition: all 0.3s;
    text-decoration: none; color: inherit; display: block;
}

.case-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
    border-color: #e2e8f0;
}

.case-card-img { width: 100%; height: 200px; object-fit: cover; display: block; }
.case-card-body { padding: 24px 20px; text-align: center; }

.case-card-tag { font-size: 13px; font-weight: 600; margin-bottom: 8px; }

.case-card-tag.red { color: #ef4444; }
.case-card-tag.orange { color: #f97316; }
.case-card-tag.green { color: #10b981; }
.case-card-tag.blue { color: #3b82f6; }
.case-card-tag.purple { color: #8b5cf6; }
.case-card-tag.teal { color: #14b8a6; }

.case-card h4 { font-size: 18px; font-weight: 700; color: #1e293b; margin-bottom: 8px; }
.case-card .stats { font-size: 13px; color: #64748b; margin-bottom: 12px; line-height: 1.6; }

.case-card .location {
    font-size: 13px; color: #94a3b8;
    display: flex; align-items: center;
    justify-content: center; gap: 4px;
}

/* 分页 */
.pagination-wrap { display: flex; justify-content: center; align-items: center; }

.pagination-wrap .pagination {
    display: flex; list-style: none; gap: 6px;
    align-items: center; flex-wrap: wrap; justify-content: center;
}

.pagination-wrap .pagination li { list-style: none; }

.pagination-wrap .pagination li a,
.pagination-wrap .pagination li span {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 38px; height: 38px; padding: 0 10px;
    border-radius: 10px; font-size: 14px; font-weight: 500;
    text-decoration: none; transition: all 0.2s; cursor: pointer;
    color: #64748b; background: #fff; border: 1px solid #e2e8f0;
}

.pagination-wrap .pagination li a:hover {
    background: #eff6ff; color: #3b82f6; border-color: #3b82f6;
}

.pagination-wrap .pagination li.active span {
    background: linear-gradient(135deg, #3b82f6, #6366f1);
    color: #fff; border-color: transparent;
    box-shadow: 0 2px 10px rgba(59, 130, 246, 0.35);
}

.pagination-wrap .pagination li.disabled span {
    color: #cbd5e1; background: #f8fafc; border-color: #f1f5f9;
    cursor: not-allowed;
}

.pagination-info {
    text-align: center; margin-bottom: 24px;
    font-size: 14px; color: #94a3b8;
}

.pagination-info strong { color: #3b82f6; font-weight: 700; }

/* ========== 案例详情页 ========== */
.breadcrumb-wrap {
    padding: 100px 40px 0; max-width: 1100px; margin: 0 auto;
}

.breadcrumb {
    display: flex; align-items: center; gap: 8px;
    font-size: 14px; color: #94a3b8; flex-wrap: wrap;
}

.breadcrumb a { color: #64748b; text-decoration: none; transition: color 0.2s; }
.breadcrumb a:hover { color: #3b82f6; }
.breadcrumb .sep { color: #cbd5e1; }
.breadcrumb .current { color: #3b82f6; font-weight: 500; }

.case-detail { max-width: 1100px; margin: 0 auto; padding: 40px; }
.case-header { text-align: center; margin-bottom: 40px; }

.case-header .tag {
    display: inline-block; padding: 6px 18px;
    border-radius: 20px; font-size: 13px;
    font-weight: 600; margin-bottom: 16px;
}

.tag-red { background: #fef2f2; color: #ef4444; }
.tag-orange { background: #fff7ed; color: #f97316; }
.tag-green { background: #ecfdf5; color: #10b981; }
.tag-blue { background: #eff6ff; color: #3b82f6; }
.tag-purple { background: #f5f3ff; color: #8b5cf6; }
.tag-teal { background: #f0fdfa; color: #14b8a6; }

.case-header h1 {
    font-size: 36px; font-weight: 800; color: #0f172a;
    margin-bottom: 12px; letter-spacing: -0.5px;
}

.case-header .location {
    font-size: 15px; color: #64748b;
    display: flex; align-items: center;
    justify-content: center; gap: 6px;
}

.case-cover {
    width: 100%; height: 420px; object-fit: cover;
    border-radius: 20px; display: block;
    margin-bottom: 40px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
}

.case-stats-row {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 20px; margin-bottom: 40px;
}

.stat-card {
    background: #fff; border-radius: 16px;
    padding: 28px 24px; text-align: center;
    border: 1px solid #f1f5f9; transition: all 0.3s;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.stat-card .stat-value { font-size: 32px; font-weight: 800; color: #3b82f6; margin-bottom: 6px; }
.stat-card .stat-label { font-size: 14px; color: #64748b; }

.case-content {
    background: #fff; border-radius: 20px;
    padding: 40px; border: 1px solid #f1f5f9;
    margin-bottom: 40px;
}

.case-content h2 {
    font-size: 24px; font-weight: 700; color: #1e293b;
    margin-bottom: 16px; padding-bottom: 12px;
    border-bottom: 2px solid #f1f5f9;
}

.case-content h3 {
    font-size: 18px; font-weight: 700; color: #1e293b;
    margin: 28px 0 12px;
}

.case-content p {
    font-size: 15px; color: #475569;
    line-height: 1.9; margin-bottom: 16px;
}

.case-content .highlight-box {
    background: linear-gradient(135deg, #eff6ff, #f5f3ff);
    border-radius: 12px; padding: 24px 28px;
    margin: 24px 0; border-left: 4px solid #3b82f6;
}

.case-content .highlight-box h4 {
    font-size: 16px; font-weight: 700; color: #3b82f6;
    margin-bottom: 8px;
}

.case-content .highlight-box p { font-size: 15px; color: #475569; margin-bottom: 0; }

.case-actions {
    display: flex; align-items: center; justify-content: center;
    gap: 16px; margin-bottom: 60px; flex-wrap: wrap;
}

.btn-back {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 12px 28px; background: #fff;
    color: #64748b; border: 2px solid #e2e8f0;
    border-radius: 10px; font-size: 15px; font-weight: 600;
    text-decoration: none; transition: all 0.3s;
}

.btn-back:hover { border-color: #3b82f6; color: #3b82f6; }

.btn-free {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 12px 28px;
    background: linear-gradient(135deg, #3b82f6, #6366f1);
    color: #fff; border: none; border-radius: 10px;
    font-size: 15px; font-weight: 600; cursor: pointer;
    text-decoration: none; transition: all 0.3s;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.35);
}

.btn-free:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(59, 130, 246, 0.45);
}

.related-section { margin-bottom: 60px; }

.related-section h2 {
    font-size: 26px; font-weight: 800; color: #0f172a;
    text-align: center; margin-bottom: 32px; letter-spacing: -0.5px;
}

.related-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}

.related-card {
    background: #fff; border-radius: 16px; overflow: hidden;
    border: 1px solid #f1f5f9; transition: all 0.3s;
    text-decoration: none; color: inherit; display: block;
}

.related-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.related-card-img { width: 100%; height: 180px; object-fit: cover; display: block; }
.related-card-body { padding: 20px 16px; text-align: center; }

.related-card-body .tag {
    font-size: 13px; font-weight: 600;
    margin-bottom: 8px; display: block;
}

.related-card-body h4 { font-size: 17px; font-weight: 700; color: #1e293b; margin-bottom: 8px; }
.related-card-body .stats { font-size: 13px; color: #64748b; margin-bottom: 8px; }

.related-card-body .location {
    font-size: 13px; color: #94a3b8;
    display: flex; align-items: center;
    justify-content: center; gap: 4px;
}

/* ========== 支付弹框 ========== */
.pay-modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9999;
    display: flex; align-items: center; justify-content: center;
    opacity: 0; visibility: hidden;
    transition: all 0.3s ease;
}

.pay-modal-overlay.active { opacity: 1; visibility: visible; }

.pay-modal {
    background: #fff; border-radius: 16px;
    width: 480px; max-width: 90vw; max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    transform: scale(0.95);
    transition: transform 0.3s ease;
}

.pay-modal-overlay.active .pay-modal { transform: scale(1); }

.pay-modal-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 20px; border-bottom: 1px solid #f0f0f0;
}

.pay-modal-title { font-size: 16px; font-weight: 600; color: #333; flex: 1; text-align: center; }

.pay-modal-close {
    font-size: 24px; color: #999; cursor: pointer; line-height: 1; padding: 0 4px;
}

.pay-modal-close:hover { color: #333; }
.pay-modal-body { padding: 20px; }

.pay-method-tabs { display: flex; gap: 12px; margin-bottom: 20px; }

.pay-method-tab {
    flex: 1; display: flex; flex-direction: column;
    align-items: center; gap: 6px; padding: 14px 8px;
    border: 2px solid #e8e8e8; border-radius: 12px;
    cursor: pointer; position: relative; transition: all 0.2s ease;
}

.pay-method-tab.active { border-color: #07c160; background: #f0fff5; }
.pay-method-tab.active .pay-method-check { opacity: 1; }

.pay-method-icon {
    width: 36px; height: 36px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
}

.pay-method-icon.wechat { background: #07c160; color: #fff; }
.pay-method-icon.alipay { background: #1677ff; color: #fff; }
.pay-method-icon svg { width: 22px; height: 22px; }
.pay-method-name { font-size: 13px; color: #333; font-weight: 500; }

.pay-method-check {
    position: absolute; top: 6px; right: 6px;
    width: 18px; height: 18px; background: #07c160;
    border-radius: 50%; opacity: 0; transition: opacity 0.2s;
}

.pay-method-check::after {
    content: ''; position: absolute; top: 3px; left: 6px;
    width: 4px; height: 8px; border: solid #fff;
    border-width: 0 2px 2px 0; transform: rotate(45deg);
}

.pay-content { text-align: center; margin-bottom: 16px; }
.pay-content.hidden { display: none; }

.pay-subtitle { font-size: 18px; font-weight: 600; color: #333; margin-bottom: 4px; }
.pay-tip { font-size: 13px; color: #999; margin-bottom: 10px; }

.pay-timer {
    display: inline-flex; align-items: center; gap: 4px;
    background: #f0f5ff; border: 1px solid #d6e4ff;
    border-radius: 20px; padding: 4px 14px;
    font-size: 13px; color: #1677ff;
}

.timer-icon { font-size: 14px; }

.pay-order-info {
    background: #f8f9fb; border-radius: 12px;
    padding: 14px 16px; margin-bottom: 16px;
}

.pay-order-row {
    display: flex; justify-content: space-between;
    align-items: center; padding: 5px 0; font-size: 13px;
}

.pay-order-label { color: #666; }
.pay-order-value { color: #333; font-weight: 500; }
.pay-order-price { color: #ff4d4f; font-size: 20px; font-weight: 700; }
.pay-order-no { font-size: 11px; color: #999; }

.pay-qrcode-wrap { display: flex; justify-content: center; margin-bottom: 16px; }

.pay-qrcode {
    width: 180px; height: 180px; padding: 10px;
    border: 1px solid #eee; border-radius: 8px; background: #fff;
}

.pay-qrcode img { width: 100%; height: 100%; object-fit: contain; }

.pay-steps {
    display: flex; align-items: center;
    justify-content: center; gap: 6px; margin-bottom: 14px;
}

.pay-step { display: flex; align-items: center; gap: 4px; font-size: 12px; color: #666; }

.pay-step-num {
    width: 18px; height: 18px; background: #1677ff;
    color: #fff; border-radius: 50%; display: flex;
    align-items: center; justify-content: center;
    font-size: 11px; font-weight: 600;
}

.pay-step-arrow { color: #ccc; font-size: 12px; }

.pay-notice {
    display: flex; align-items: center; justify-content: center;
    gap: 6px; background: #e6f7ff; border: 1px solid #91d5ff;
    border-radius: 8px; padding: 10px 14px;
    font-size: 12px; color: #096dd9;
}

.pay-notice-icon { font-size: 14px; }

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .header { padding: 0 20px; }

    /* 首页 */
    .hero-content { flex-direction: column; gap: 32px; }
    .hero-left { text-align: center; }
    .hero-platforms { justify-content: center; }
    .hero-actions { justify-content: center; }
    .hero-banner img { height: 240px; }
    .hero h1 { font-size: 32px; }
    .hero-subtitle { font-size: 16px; }
    .features-grid { grid-template-columns: 1fr; }
    .value-grid { grid-template-columns: 1fr; }
    .industries-grid { grid-template-columns: repeat(2, 1fr); }
    .pricing-grid { grid-template-columns: repeat(2, 1fr); }
    .pricing-card.featured { transform: none; }
    .pricing-card.featured:hover { transform: translateY(-6px); }
    .banner-stats { grid-template-columns: 1fr; gap: 20px; }
    .value-banner { padding: 32px 20px; }
    .value-banner h3 { font-size: 20px; }
    .workflow-steps { flex-wrap: wrap; gap: 24px 12px; }
    .workflow-arrow { display: none; }
    .workflow-step { max-width: 140px; }
    .footer-main { grid-template-columns: 1fr 1fr; gap: 32px; padding: 40px 20px; }
    .footer-bottom { padding: 16px 20px; }
    .section-header h2, .value-inner h2, .cta h2 { font-size: 26px; }

    /* 案例列表 */
    .cases-grid { grid-template-columns: 1fr; }
    .page-header h1 { font-size: 28px; }
    .page-header { padding: 100px 16px 40px; }
    .case-card-img { height: 180px; }

    /* 案例详情 */
    .case-detail { padding: 20px; }
    .case-cover { height: 240px; border-radius: 12px; }
    .case-stats-row { grid-template-columns: 1fr; }
    .case-content { padding: 24px; }
    .case-header h1 { font-size: 26px; }
    .related-grid { grid-template-columns: 1fr; }
    .breadcrumb-wrap { padding: 90px 20px 0; }

    /* 支付弹框 */
    .pay-modal { width: 92vw; }
    .pay-method-tab { padding: 10px 4px; }
    .pay-steps { flex-wrap: wrap; gap: 8px; }
    .pay-step-arrow { display: none; }
}

@media (max-width: 480px) {
    .login-form, .register-form { padding: 28px 20px; }
    .login-header h1, .register-header h1 { font-size: 26px; }
}