/* ============================================================
   卡速网控制端 - 前台主样式 v2
   现代动效版 - 参考 kasushou.com 设计
   ============================================================ */

:root {
    --primary: #667eea;
    --primary-dark: #5a6fd6;
    --primary-light: #8b9cf7;
    --secondary: #764ba2;
    --accent: #f093fb;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --dark: #0f1729;
    --darker: #0b1120;
    --darkest: #070b17;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --radius: 12px;
    --radius-lg: 20px;
    --shadow: 0 4px 20px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 50px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
    --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    color: var(--gray-800);
    background: #fff;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ============ 动画关键帧 ============ */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideInRight { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
@keyframes pulse { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.05); } }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
@keyframes shimmer { 0% { background-position: -200% 0; } 100% { background-position: 200% 0; } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes heroGlow { 0% { transform: translate(0, 0) scale(1); } 100% { transform: translate(-3%, 3%) scale(1.05); } }
@keyframes countUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.animate-on-scroll { opacity: 0; transform: translateY(30px); transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1); }
.animate-on-scroll.visible { opacity: 1; transform: translateY(0); }
.animate-on-scroll-left { opacity: 0; transform: translateX(-40px); transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1); }
.animate-on-scroll-left.visible { opacity: 1; transform: translateX(0); }
.animate-on-scroll-right { opacity: 0; transform: translateX(40px); transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1); }
.animate-on-scroll-right.visible { opacity: 1; transform: translateX(0); }

/* ============ 导航栏 ============ */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(15,23,41,0.9);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    transition: var(--transition);
}

.navbar .container {
    display: flex; align-items: center; justify-content: space-between; height: 72px;
}

.navbar-brand {
    display: flex; align-items: center; gap: 10px;
    font-size: 22px; font-weight: 800;
    color: #fff;
    letter-spacing: 0.5px;
}

.navbar-brand i { color: var(--primary-light); }

/* Logo 图片：白色底框 + 呼吸动画 */
.navbar-logo {
    height: 40px; width: auto;
    border-radius: 8px;
    background: rgba(255,255,255,0.92);
    padding: 4px 12px;
    box-shadow: 0 0 0 0 rgba(255,255,255,0.15);
    transition: all 0.35s cubic-bezier(0.4,0,0.2,1);
    animation: logoBreath 3s ease-in-out infinite;
}
.navbar-brand:hover .navbar-logo {
    transform: scale(1.06);
    box-shadow: 0 0 24px rgba(255,255,255,0.18);
}
@keyframes logoBreath {
    0%, 100% { box-shadow: 0 0 0 0 rgba(255,255,255,0.12); }
    50% { box-shadow: 0 0 0 8px rgba(255,255,255,0.04); }
}

/* ============ 页面横幅（page-banner） ============ */
.page-banner {
    padding: 110px 0 50px;
    background: linear-gradient(160deg, #070b17 0%, #0f1729 40%, #1a1a3e 70%, #0f3460 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}
.page-banner h1 {
    font-size: 32px; font-weight: 800; color: #fff;
    margin-bottom: 8px; letter-spacing: -0.3px;
}
.page-banner p {
    font-size: 16px; color: rgba(255,255,255,0.55);
    max-width: 500px; margin: 0 auto; line-height: 1.7;
}

/* ============ 页面内容（page-content） ============ */
.page-content {
    max-width: 800px; margin: 0 auto; line-height: 1.9;
}
.page-content h2 {
    font-size: 22px; font-weight: 700; color: var(--gray-800);
    margin: 32px 0 12px; padding-bottom: 10px;
    border-bottom: 2px solid var(--gray-100);
}
.page-content h2:first-child { margin-top: 0; }
.page-content p {
    font-size: 15px; color: var(--gray-600); margin-bottom: 12px;
}
.page-content strong { color: var(--gray-800); }

.navbar-nav { display: flex; align-items: center; gap: 2px; }

.navbar-nav a {
    padding: 8px 18px; border-radius: 8px;
    font-size: 15px; font-weight: 500;
    color: rgba(255,255,255,0.65);
    transition: var(--transition);
}

.navbar-nav a:hover, .navbar-nav a.active {
    color: #fff;
    background: rgba(255,255,255,0.08);
}

.navbar-actions { display: flex; align-items: center; gap: 12px; }
.navbar-actions .btn-outline { border-color: rgba(255,255,255,0.2); color: rgba(255,255,255,0.8); }
.navbar-actions .btn-outline:hover { border-color: var(--primary); background: rgba(102,126,234,0.15); color: #fff; }

/* ============ 按钮 ============ */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 28px; border-radius: 10px;
    font-size: 15px; font-weight: 600; border: none;
    cursor: pointer; transition: var(--transition); white-space: nowrap; line-height: 1.4;
    position: relative; overflow: hidden;
}

.btn::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
    opacity: 0; transition: opacity 0.3s;
}
.btn:hover::after { opacity: 1; }
.btn:hover { transform: translateY(-2px); }

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    box-shadow: 0 4px 20px rgba(102,126,234,0.35);
}
.btn-primary:hover { box-shadow: 0 8px 30px rgba(102,126,234,0.5); transform: translateY(-3px); }

.btn-outline {
    background: transparent; color: var(--primary);
    border: 2px solid var(--primary);
}
.btn-outline:hover { background: rgba(102,126,234,0.08); }

.btn-white {
    background: #fff; color: var(--primary);
}
.btn-white:hover { box-shadow: 0 8px 30px rgba(255,255,255,0.3); }

.btn-sm { padding: 8px 18px; font-size: 14px; }
.btn-lg { padding: 16px 40px; font-size: 17px; }

/* ============ Hero Banner v2 ============ */
.hero {
    position: relative; min-height: 100vh;
    display: flex; align-items: center;
    background: linear-gradient(160deg, #070b17 0%, #0f1729 40%, #1a1a3e 70%, #0f3460 100%);
    overflow: hidden; padding-top: 72px;
}

.hero::before {
    content: ''; position: absolute; inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(102,126,234,0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(116,75,162,0.1) 0%, transparent 40%),
        radial-gradient(ellipse at 50% 80%, rgba(240,147,251,0.08) 0%, transparent 40%);
    animation: heroGlow 12s ease-in-out infinite alternate;
}

/* 浮动装饰圆 */
.hero-dot {
    position: absolute; border-radius: 50%;
    background: radial-gradient(circle, rgba(102,126,234,0.2), transparent 70%);
    pointer-events: none;
}
.hero-dot:nth-child(1) { width: 400px; height: 400px; top: -100px; right: -100px; animation: float 8s ease-in-out infinite; }
.hero-dot:nth-child(2) { width: 300px; height: 300px; bottom: -50px; left: -50px; animation: float 10s ease-in-out infinite reverse; }
.hero-dot:nth-child(3) { width: 200px; height: 200px; top: 40%; right: 30%; animation: float 6s ease-in-out infinite 2s; }

/* 网格背景 */
.hero-grid {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero .container {
    position: relative; z-index: 1;
    display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
    align-items: center; padding: 60px 20px;
}

.hero-content { position: relative; }

.hero-badge {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 6px 16px; border-radius: 20px;
    font-size: 13px; font-weight: 600;
    background: rgba(102,126,234,0.15);
    color: var(--primary-light);
    border: 1px solid rgba(102,126,234,0.2);
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease;
}

.hero-content h1 {
    font-size: 52px; font-weight: 800; line-height: 1.15;
    color: #fff; margin-bottom: 20px;
    animation: fadeInUp 0.6s 0.1s ease both;
}

.hero-content h1 .highlight {
    background: linear-gradient(135deg, #8b9cf7, #f093fb, #667eea);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 3s linear infinite;
}

.hero-content p {
    font-size: 18px; color: rgba(255,255,255,0.55);
    line-height: 1.8; margin-bottom: 36px;
    max-width: 520px;
    animation: fadeInUp 0.6s 0.2s ease both;
}

.hero-buttons {
    display: flex; gap: 16px; flex-wrap: wrap;
    animation: fadeInUp 0.6s 0.3s ease both;
}

.hero-stats {
    display: flex; gap: 40px; margin-top: 40px;
    padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.08);
    animation: fadeInUp 0.6s 0.4s ease both;
}

.hero-stat h3 { font-size: 28px; font-weight: 800; color: #fff; }
.hero-stat p { font-size: 14px; color: rgba(255,255,255,0.4); margin: 0; }

/* Hero 右侧展示区 */
.hero-showcase {
    display: flex; justify-content: center; align-items: center;
    animation: fadeIn 0.8s 0.3s ease both;
}

.hero-card {
    width: 100%; max-width: 500px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 24px; padding: 36px;
    backdrop-filter: blur(20px);
    box-shadow: 0 20px 80px rgba(0,0,0,0.3);
    animation: float 6s ease-in-out infinite;
}

.hero-card-header {
    display: flex; align-items: center; gap: 12px; margin-bottom: 24px; padding-bottom: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.hero-card-dot {
    width: 10px; height: 10px; border-radius: 50%;
}
.hero-card-dot:nth-child(1) { background: #ef4444; }
.hero-card-dot:nth-child(2) { background: #f59e0b; }
.hero-card-dot:nth-child(3) { background: #10b981; }

.hero-card-icon { text-align: center; margin-bottom: 16px; }
.hero-card-icon i { font-size: 48px; color: var(--primary-light); }

.hero-card h3 { text-align: center; font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 20px; }

.hero-card-features { display: grid; gap: 10px; }

.hero-card-feature {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 16px;
    background: rgba(255,255,255,0.05);
    border-radius: 10px;
    color: rgba(255,255,255,0.75);
    font-size: 14px;
    transition: var(--transition);
}

.hero-card-feature:hover {
    background: rgba(255,255,255,0.08);
    transform: translateX(5px);
}

.hero-card-feature i { color: var(--success); font-size: 14px; }

/* ============ 合作伙伴通栏 ============ */
.partners {
    padding: 50px 0;
    background: var(--gray-50);
    text-align: center;
    overflow: hidden;
}

.partners-track {
    display: flex; gap: 60px; align-items: center;
    animation: scrollLeft 30s linear infinite;
    width: max-content;
}

@keyframes scrollLeft {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.partner-item {
    display: flex; align-items: center; gap: 8px;
    padding: 12px 28px; background: #fff;
    border-radius: 10px; box-shadow: 0 2px 10px rgba(0,0,0,0.04);
    font-size: 16px; font-weight: 700; color: var(--gray-400);
    white-space: nowrap; transition: var(--transition);
}

.partner-item:hover { transform: scale(1.05); color: var(--primary); }

/* ============ 通用 Section ============ */
.section {
    padding: 100px 0; position: relative;
}

.section-header {
    text-align: center; margin-bottom: 60px;
    animation: fadeInUp 0.6s ease;
}

.section-header h2 {
    font-size: 36px; font-weight: 800; color: var(--gray-900);
    margin-bottom: 16px; letter-spacing: -0.5px;
}

.section-header h2 .highlight {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    font-size: 18px; color: var(--gray-500);
    max-width: 560px; margin: 0 auto; line-height: 1.7;
}

.section-bg { background: var(--gray-50); }
.section-bg-dark { background: var(--dark); }
.section-bg-dark .section-header h2 { color: #fff; }
.section-bg-dark .section-header p { color: rgba(255,255,255,0.55); }

/* ============ 核心优势 ============ */
.features-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}

.feature-card {
    background: #fff; border: 1px solid var(--gray-100);
    border-radius: 16px; padding: 32px 24px;
    text-align: center; position: relative;
    transition: var(--transition);
    overflow: hidden;
}

.feature-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    transform: scaleX(0); transform-origin: left;
    transition: transform 0.5s ease;
}

.feature-card:hover::before { transform: scaleX(1); }
.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(0,0,0,0.08);
    border-color: transparent;
}

.feature-icon {
    width: 64px; height: 64px; margin: 0 auto 20px;
    border-radius: 16px; display: flex;
    align-items: center; justify-content: center;
    font-size: 28px; transition: var(--transition);
}

.feature-card:hover .feature-icon { transform: scale(1.1) rotate(-5deg); }

.feature-card h3 { font-size: 18px; font-weight: 700; color: var(--gray-800); margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--gray-500); line-height: 1.7; }

/* ============ 解决方案场景 ============ */
.solutions-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}

.solution-card {
    background: #fff; border-radius: 16px;
    padding: 36px 28px; position: relative;
    overflow: hidden; transition: var(--transition);
    box-shadow: 0 2px 15px rgba(0,0,0,0.04);
}

.solution-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 50px rgba(0,0,0,0.08);
}

.solution-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.solution-icon {
    width: 56px; height: 56px; border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    font-size: 24px; margin-bottom: 20px;
    transition: var(--transition);
}

.solution-card:hover .solution-icon { transform: scale(1.1) rotate(5deg); }

.solution-card h3 { font-size: 20px; font-weight: 700; color: var(--gray-800); margin-bottom: 12px; }
.solution-card p { font-size: 15px; color: var(--gray-500); line-height: 1.7; }

/* ============ 套餐价格 ============ */
.pricing-grid { display: flex; justify-content: center; gap: 30px; }

.pricing-card {
    background: #fff; border-radius: 20px;
    padding: 48px 36px; text-align: center;
    position: relative; max-width: 460px; width: 100%;
    box-shadow: 0 4px 25px rgba(0,0,0,0.06);
    transition: var(--transition);
    border: 2px solid transparent;
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 60px rgba(0,0,0,0.1);
}

.pricing-card.recommended {
    border-color: var(--primary);
    box-shadow: 0 10px 40px rgba(102,126,234,0.15);
}

.pricing-badge {
    position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff; padding: 6px 28px; border-radius: 20px;
    font-size: 13px; font-weight: 700; letter-spacing: 1px;
}

.pricing-card h3 { font-size: 24px; font-weight: 800; color: var(--gray-800); margin-bottom: 20px; }

.pricing-price { margin-bottom: 24px; }
.pricing-price .currency { font-size: 20px; font-weight: 600; vertical-align: super; color: var(--gray-500); }
.pricing-price .amount {
    font-size: 56px; 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;
}
.pricing-price .period { font-size: 16px; color: var(--gray-400); }
.pricing-original { font-size: 16px; color: var(--gray-400); text-decoration: line-through; margin-bottom: 20px; }

.pricing-features { text-align: left; margin-bottom: 32px; }
.pricing-feature {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 0; font-size: 15px; color: var(--gray-600);
}

.pricing-feature i.fa-check-circle { color: var(--success); font-size: 16px; width: 20px; }
.pricing-card .btn { width: 100%; }

/* ============ 套餐额度显示 ============ */
.pricing-quota {
    background: linear-gradient(135deg, #f8f9ff, #f0f2ff);
    border-radius: 12px;
    padding: 16px 20px;
    margin: 0 0 24px 0;
    text-align: left;
    border: 1px solid rgba(102,126,234,0.1);
}
.pricing-quota-title {
    font-size: 12px;
    font-weight: 700;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.pricing-quota-grid {
    display: flex;
    gap: 12px;
}
.pricing-quota-item {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 10px;
    background: #fff;
    border-radius: 10px;
    padding: 10px 14px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}
.pricing-quota-icon {
    width: 36px; height: 36px;
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 15px;
    flex-shrink: 0;
}
.pricing-quota-label {
    font-size: 11px;
    color: var(--gray-400);
    font-weight: 500;
    line-height: 1.2;
}
.pricing-quota-value {
    font-size: 18px;
    font-weight: 800;
    color: var(--gray-800);
    line-height: 1.2;
    margin-top: 2px;
}

/* ============ 新闻详情 ============ */
.news-detail {
    background: #fff; border-radius: 20px; padding: 40px;
    box-shadow: 0 2px 20px rgba(0,0,0,0.04);
    max-width: 860px; margin: 0 auto;
}
.news-detail h1 {
    font-size: 26px; font-weight: 800; color: var(--gray-900);
    line-height: 1.4; margin-bottom: 16px;
}
.news-detail-meta {
    display: flex; align-items: center; flex-wrap: wrap; gap: 8px;
    font-size: 14px; color: var(--gray-400);
    padding-bottom: 20px; border-bottom: 1px solid var(--gray-100);
    margin-bottom: 28px;
}
.news-detail-content {
    font-size: 15px; line-height: 1.9; color: var(--gray-600);
}
.news-detail-content p { margin-bottom: 16px; }
.news-detail-content img { max-width: 100%; border-radius: 10px; margin: 16px 0; }

/* ============ 新闻列表 ============ */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.news-card {
    background: #fff; border-radius: 16px; overflow: hidden;
    box-shadow: 0 2px 15px rgba(0,0,0,0.04);
    transition: var(--transition);
    display: block;
}

.news-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 50px rgba(0,0,0,0.08);
}

.news-card-img {
    height: 200px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 48px;
    transition: var(--transition);
}

.news-card:hover .news-card-img { transform: scale(1.05); }

.news-card-body { padding: 24px; }
.news-card-category {
    display: inline-block; padding: 3px 12px; border-radius: 20px;
    font-size: 12px; font-weight: 600; margin-bottom: 10px;
    background: rgba(102,126,234,0.1); color: var(--primary);
}

.news-card h3 {
    font-size: 16px; font-weight: 700; margin-bottom: 8px;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

.news-card p {
    font-size: 14px; color: var(--gray-500);
    display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
    margin-bottom: 12px;
}
.news-card-meta { font-size: 12px; color: var(--gray-400); }

/* ============ 页脚 ============ */
.footer {
    background: var(--dark); color: rgba(255,255,255,0.6);
    padding: 80px 0 30px; position: relative;
}

.footer::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(102,126,234,0.3), transparent);
}

.footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 50px;
    margin-bottom: 50px;
}

.footer-brand h3 {
    font-size: 22px; font-weight: 800;
    color: #fff; margin-bottom: 16px;
}

.footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.4); }

.footer-col h4 { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 20px; }

.footer-col a {
    display: block; padding: 6px 0;
    font-size: 14px; color: rgba(255,255,255,0.4);
    transition: var(--transition);
}

.footer-col a:hover { color: var(--primary-light); padding-left: 5px; }

.footer-contact p {
    display: flex; align-items: center; gap: 10px;
    padding: 6px 0; font-size: 14px;
}

.footer-contact i { width: 16px; color: var(--primary-light); }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding-top: 24px;
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 16px;
    font-size: 13px; color: rgba(255,255,255,0.3);
}

/* ============ 回到顶部 ============ */
.back-to-top {
    position: fixed; bottom: 30px; right: 30px; z-index: 999;
    width: 44px; height: 44px; border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff; border: none; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; box-shadow: 0 4px 15px rgba(102,126,234,0.4);
    opacity: 0; transform: translateY(20px);
    transition: all 0.3s; pointer-events: none;
}

.back-to-top.show { opacity: 1; transform: translateY(0); pointer-events: auto; }
.back-to-top:hover { transform: translateY(-3px); box-shadow: 0 8px 25px rgba(102,126,234,0.5); }

/* ============ Toast 通知 ============ */
.toast {
    position: fixed; top: 90px; right: 20px; z-index: 99999;
    padding: 14px 24px; border-radius: 10px;
    font-size: 14px; font-weight: 500;
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
    animation: slideInRight 0.3s ease;
}

/* ============ 认证表单 ============ */
.auth-section {
    padding: 80px 0; background: var(--gray-50);
    min-height: 100vh; display: flex; align-items: center;
}

.auth-box {
    max-width: 440px; width: 100%; margin: 0 auto;
    background: #fff; border-radius: 20px;
    padding: 48px 36px; box-shadow: 0 10px 50px rgba(0,0,0,0.08);
}

.auth-box h2 { font-size: 28px; font-weight: 800; text-align: center; margin-bottom: 8px; }
.auth-box .subtitle { text-align: center; color: var(--gray-500); margin-bottom: 32px; font-size: 15px; }

.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; color: var(--gray-700); margin-bottom: 6px; }

.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: 12px 16px;
    border: 2px solid var(--gray-200); border-radius: 10px;
    font-size: 15px; outline: none; transition: var(--transition);
    background: var(--gray-50); font-family: inherit;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    border-color: var(--primary); background: #fff;
    box-shadow: 0 0 0 4px rgba(102,126,234,0.1);
}

.form-submit { width: 100%; margin-top: 8px; }

.alert { padding: 14px 18px; border-radius: 10px; font-size: 14px; margin-bottom: 20px; display: none; }
.alert-danger { display: block; background: #fef2f2; color: var(--danger); border: 1px solid #fecaca; }
.alert-success { display: block; background: #f0fdf4; color: var(--success); border: 1px solid #bbf7d0; }

/* ============ 响应式 ============ */
/* ============ 用户控制台 Dashboard ============ */

/* 控制台布局 */
.dashboard-wrap {
    min-height: calc(100vh - 72px);
    background: #f0f2f5;
    padding: 96px 0 24px;
}
.dashboard-body {
    display: flex; gap: 24px; align-items: flex-start;
}
.dashboard-sidebar {
    width: 240px; flex-shrink: 0;
    position: sticky; top: 96px;
}
.dashboard-content {
    flex: 1; min-width: 0;
}

/* 侧边栏 */
.dash-sidebar-card {
    background: #fff; border-radius: 16px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
    overflow: hidden;
}
.dash-sidebar-user {
    padding: 28px 24px 20px;
    text-align: center;
    border-bottom: 1px solid #f0f0f0;
}
.dash-sidebar-avatar {
    width: 56px; height: 56px; border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff; display: flex; align-items: center; justify-content: center;
    font-size: 24px; margin: 0 auto 12px;
    box-shadow: 0 4px 14px rgba(102,126,234,0.3);
}
.dash-sidebar-name {
    font-weight: 700; font-size: 16px; color: var(--gray-800);
}
.dash-sidebar-email {
    font-size: 13px; color: var(--gray-400); margin-top: 2px;
}
.dash-sidebar-nav {
    padding: 8px 0;
}
.dash-nav-item {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 24px; font-size: 14px; color: var(--gray-600);
    transition: all 0.2s; border-right: 3px solid transparent;
}
.dash-nav-item:hover {
    background: rgba(102,126,234,0.05);
    color: var(--primary);
}
.dash-nav-item i { width: 18px; text-align: center; }
.dash-nav-item.active {
    background: rgba(102,126,234,0.08);
    color: var(--primary); font-weight: 600;
    border-right-color: var(--primary);
}
.dash-nav-item.danger { color: var(--danger); }
.dash-nav-item.danger:hover { background: rgba(239,68,68,0.05); }
.dash-nav-divider {
    border: none; border-top: 1px solid #f0f0f0; margin: 8px 0;
}

/* 页面头部 */
.dash-header {
    margin-bottom: 24px;
}
.dash-header-top {
    display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
}
.dash-title { font-size: 22px; font-weight: 800; color: var(--gray-900); letter-spacing: -0.3px; }
.dash-subtitle { font-size: 14px; color: var(--gray-400); margin-top: 2px; }

/* 统计卡片 */
.stat-cards {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 24px;
}
.stat-card {
    background: #fff; border-radius: 16px; padding: 24px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
    display: flex; align-items: center; gap: 16px;
    transition: all 0.25s;
}
.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}
.stat-card-icon {
    width: 52px; height: 52px; border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    font-size: 22px; flex-shrink: 0;
}
.stat-card-icon.primary { background: rgba(102,126,234,0.1); color: var(--primary); }
.stat-card-icon.success { background: rgba(16,185,129,0.1); color: var(--success); }
.stat-card-icon.warning { background: rgba(245,158,11,0.1); color: var(--warning); }
.stat-card-body { flex: 1; min-width: 0; }
.stat-card-value { font-size: 28px; font-weight: 800; color: var(--gray-900); line-height: 1.2; letter-spacing: -0.5px; }
.stat-card-label { font-size: 13px; color: var(--gray-400); margin-top: 2px; }

/* 通用卡片 */
.dash-card {
    background: #fff; border-radius: 16px; padding: 24px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
    margin-bottom: 20px;
}
.dash-card-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 16px; flex-wrap: wrap; gap: 8px;
}
.dash-card-title {
    font-size: 16px; font-weight: 700; color: var(--gray-800);
}
.dash-card-title i { color: var(--primary); margin-right: 8px; }
.dash-card-more {
    font-size: 13px; color: var(--primary); font-weight: 500;
}
.dash-card-more:hover { text-decoration: underline; }

/* 空状态 */
.dash-empty {
    text-align: center; padding: 48px 24px; color: var(--gray-400);
}
.dash-empty i {
    font-size: 42px; margin-bottom: 12px; display: block; color: var(--gray-300);
}
.dash-empty p { font-size: 14px; }
.dash-empty .btn { margin-top: 16px; }

/* 授权码列表 */
.dash-auth-list { display: flex; flex-direction: column; gap: 10px; }
.dash-auth-item {
    display: flex; align-items: center; justify-content: space-between; gap: 12px;
    padding: 14px 16px;
    background: var(--gray-50); border-radius: 12px;
    transition: all 0.2s;
}
.dash-auth-item:hover { background: #eef2ff; }
.dash-auth-info { flex: 1; min-width: 0; }
.dash-auth-code {
    font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
    font-size: 16px; font-weight: 600; color: var(--gray-800);
    letter-spacing: 0.5px;
}
.dash-auth-meta {
    font-size: 12px; color: var(--gray-400); margin-top: 3px;
}
.dash-auth-domain { color: var(--gray-500); }
.dash-auth-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.dash-auth-copy {
    padding: 4px 10px; border-radius: 6px; font-size: 12px;
    background: #fff; border: 1px solid var(--gray-200);
    color: var(--gray-600); cursor: pointer; transition: all 0.2s;
}
.dash-auth-copy:hover { border-color: var(--primary); color: var(--primary); }

/* 状态标签 */
.dash-status {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 3px 10px; border-radius: 20px;
    font-size: 12px; font-weight: 600;
}
.dash-status::before {
    content: ''; width: 6px; height: 6px; border-radius: 50%;
}
.dash-status.active {
    background: rgba(16,185,129,0.1); color: #059669;
}
.dash-status.active::before { background: #059669; }
.dash-status.expired {
    background: rgba(239,68,68,0.1); color: #dc2626;
}
.dash-status.expired::before { background: #dc2626; }
.dash-status.disabled {
    background: rgba(148,163,184,0.15); color: var(--gray-500);
}
.dash-status.disabled::before { background: var(--gray-400); }
.dash-status.used {
    background: rgba(245,158,11,0.1); color: #d97706;
}
.dash-status.used::before { background: #d97706; }
.dash-status.paid {
    background: rgba(16,185,129,0.1); color: #059669;
}
.dash-status.paid::before { background: #059669; }
.dash-status.pending {
    background: rgba(245,158,11,0.1); color: #d97706;
}
.dash-status.pending::before { background: #d97706; }
.dash-status.cancelled {
    background: rgba(148,163,184,0.15); color: var(--gray-500);
}
.dash-status.cancelled::before { background: var(--gray-400); }

/* 购买推荐条 */
.purchase-banner {
    background: linear-gradient(135deg, #667eea10, #764ba208);
    border: 2px solid #667eea18;
    border-radius: 16px; padding: 20px 24px;
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 12px; margin-bottom: 20px;
}
.purchase-banner-left { display: flex; align-items: center; gap: 12px; }
.purchase-banner-icon {
    width: 44px; height: 44px; border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff; display: flex; align-items: center; justify-content: center;
    font-size: 18px; flex-shrink: 0;
}
.purchase-banner-title { font-size: 15px; font-weight: 700; color: var(--gray-800); }
.purchase-banner-desc { font-size: 13px; color: var(--gray-500); margin-top: 2px; }

/* ===== 新闻分类筛选 ===== */
.news-categories {
    display: flex; gap: 8px; margin-bottom: 32px; flex-wrap: wrap; justify-content: center;
}
.news-cat-item {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 10px 24px; border-radius: 12px;
    font-size: 14px; font-weight: 600;
    background: #fff; color: var(--gray-500);
    border: 2px solid var(--gray-200);
    text-decoration: none;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}
.news-cat-item::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    opacity: 0; transition: opacity 0.25s;
    border-radius: 10px;
}
.news-cat-item i, .news-cat-item span { position: relative; z-index: 1; }
.news-cat-item:hover {
    border-color: var(--primary); color: var(--primary);
    background: rgba(102,126,234,0.04);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102,126,234,0.15);
}
.news-cat-item.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff; border-color: transparent;
    box-shadow: 0 4px 14px rgba(102,126,234,0.35);
    transform: translateY(-1px);
}
.news-cat-item.active:hover {
    box-shadow: 0 6px 20px rgba(102,126,234,0.45);
    transform: translateY(-2px);
}

/* 数据表格 */
.dash-table-wrap { overflow-x: auto; }
.dash-table {
    width: 100%; border-collapse: collapse; font-size: 14px;
}
.dash-table thead th {
    text-align: left; padding: 12px 12px;
    color: var(--gray-400); font-size: 12px; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.3px;
    border-bottom: 2px solid #f0f0f0;
}
.dash-table tbody td {
    padding: 14px 12px; border-bottom: 1px solid #f5f5f5;
    color: var(--gray-600); vertical-align: middle;
}
.dash-table tbody tr:last-child td { border-bottom: none; }
.dash-table tbody tr:hover td { background: #fafbfc; }
.dash-table .order-sn {
    font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
    font-size: 13px; color: var(--gray-700);
}
.dash-table .order-amount { font-weight: 700; color: var(--gray-800); }
.dash-table .order-date { color: var(--gray-400); font-size: 13px; }

/* 分页 */
.dash-pagination {
    display: flex; justify-content: center; gap: 6px; margin-top: 20px;
}
.dash-page-btn {
    padding: 8px 14px; border-radius: 8px; font-size: 14px;
    background: #fff; color: var(--gray-600); border: 1px solid var(--gray-200);
    transition: all 0.2s; cursor: pointer;
}
.dash-page-btn:hover { border-color: var(--primary); color: var(--primary); }
.dash-page-btn.active {
    background: var(--primary); color: #fff; border-color: var(--primary);
}

/* 个人资料页 */
.profile-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.profile-item {
    display: flex; flex-direction: column; gap: 4px;
}
.profile-item.full { grid-column: 1 / -1; }
.profile-label {
    font-size: 12px; font-weight: 600; color: var(--gray-400);
    text-transform: uppercase; letter-spacing: 0.3px;
}
.profile-value {
    font-size: 14px; color: var(--gray-700);
}

/* 提示消息 */
.dash-message {
    padding: 12px 16px; border-radius: 12px;
    font-size: 14px; margin-bottom: 20px;
    display: flex; align-items: center; gap: 8px;
}
.dash-message i { font-size: 16px; }
.dash-message.success {
    background: #f0fdf4; color: #16a34a; border: 1px solid #bbf7d0;
}
.dash-message.error {
    background: #fef2f2; color: #dc2626; border: 1px solid #fecaca;
}

/* Toast通知 - 复制成功 */
.dash-toast {
    position: fixed; top: 90px; right: 24px; z-index: 99999;
    padding: 12px 20px; border-radius: 10px;
    background: #1e293b; color: #fff; font-size: 13px; font-weight: 500;
    box-shadow: 0 8px 30px rgba(0,0,0,0.2);
    transform: translateX(120%); opacity: 0;
    transition: all 0.35s cubic-bezier(0.4,0,0.2,1);
    pointer-events: none;
}
.dash-toast.show { transform: translateX(0); opacity: 1; }

/* 响应式 */
@media (max-width: 1200px) {
    .dashboard-sidebar { width: 200px; }
}
@media (max-width: 1024px) {
    .dashboard-body { flex-direction: column; }
    .dashboard-sidebar { width: 100%; position: static; }
    .dash-sidebar-nav { display: flex; flex-wrap: wrap; gap: 0; padding: 0; }
    .dash-sidebar-nav a { border-right: none; border-bottom: 2px solid transparent; }
    .dash-nav-item.active { border-right-color: transparent; border-bottom-color: var(--primary); }
    .dash-nav-item { padding: 10px 16px; font-size: 13px; }
    .dash-nav-divider { display: none; }
}
@media (max-width: 768px) {
    .dashboard-wrap { padding: 16px 0; }
    .stat-cards { grid-template-columns: 1fr; gap: 12px; }
    .profile-grid { grid-template-columns: 1fr; }
    .purchase-banner { flex-direction: column; align-items: stretch; text-align: center; }
    .purchase-banner-left { flex-direction: column; }
    .dash-header-top { flex-direction: column; align-items: flex-start; }
    .dash-sidebar-nav { overflow-x: auto; flex-wrap: nowrap; }
    .dash-auth-item { flex-direction: column; align-items: flex-start; }
    .dash-auth-actions { width: 100%; justify-content: flex-end; }
}

@media (min-width: 1025px) {
    .dash-sidebar-nav .dash-nav-item.danger,
    .dash-sidebar-nav .dash-nav-item:last-child { display: none; }
}

@media (max-width: 1024px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .solutions-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .navbar-nav { display: none; }
    .hero .container { grid-template-columns: 1fr; text-align: center; }
    .hero-content p { margin: 0 auto 36px; }
    .hero-buttons { justify-content: center; }
    .hero-stats { justify-content: center; }
    .hero-content h1 { font-size: 32px; }
    .features-grid { grid-template-columns: 1fr; }
    .solutions-grid { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .pricing-grid { flex-direction: column; align-items: center; }
    .footer-grid { grid-template-columns: 1fr; }
    .section { padding: 60px 0; }
    .section-header h2 { font-size: 28px; }
}