/* ========================================
   开云体育官网 - 主样式文件
   it-login-kaiyun.com
   ======================================== */

/* CSS Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: #0a0e1a;
    color: #e0e6f0;
    line-height: 1.7;
    overflow-x: hidden;
}
a { color: #4da6ff; text-decoration: none; transition: color 0.3s; }
a:hover { color: #f0a500; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

/* ========================================
   CSS Variables
   ======================================== */
:root {
    --primary: #1a6fd4;
    --primary-dark: #0d4fa0;
    --accent: #f0a500;
    --accent-dark: #c88500;
    --bg-dark: #0a0e1a;
    --bg-card: #111827;
    --bg-card2: #161e2e;
    --border: rgba(255,255,255,0.08);
    --text-main: #e0e6f0;
    --text-muted: #8899aa;
    --text-light: #ffffff;
    --gradient-hero: linear-gradient(135deg, #0a0e1a 0%, #0d1f3c 50%, #0a0e1a 100%);
    --gradient-btn: linear-gradient(135deg, #1a6fd4, #0d4fa0);
    --gradient-accent: linear-gradient(135deg, #f0a500, #c88500);
    --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
    --shadow-hover: 0 16px 48px rgba(26,111,212,0.3);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.3s ease;
}

/* ========================================
   Layout Utilities
   ======================================== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.section-sm { padding: 50px 0; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-header h2 { font-size: 2.2rem; font-weight: 700; color: var(--text-light); margin-bottom: 16px; }
.section-header p { font-size: 1.05rem; color: var(--text-muted); max-width: 600px; margin: 0 auto; }
.section-header .tag {
    display: inline-block; background: rgba(26,111,212,0.15); color: var(--primary);
    border: 1px solid rgba(26,111,212,0.3); border-radius: 20px;
    padding: 4px 16px; font-size: 0.85rem; margin-bottom: 12px;
}
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.text-center { text-align: center; }
.text-accent { color: var(--accent); }
.text-primary { color: var(--primary); }

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 32px; border-radius: 50px; font-size: 1rem;
    font-weight: 600; cursor: pointer; border: none;
    transition: all var(--transition); text-decoration: none;
}
.btn-primary {
    background: var(--gradient-btn); color: #fff;
    box-shadow: 0 4px 20px rgba(26,111,212,0.4);
}
.btn-primary:hover {
    transform: translateY(-2px); color: #fff;
    box-shadow: 0 8px 30px rgba(26,111,212,0.6);
}
.btn-accent {
    background: var(--gradient-accent); color: #fff;
    box-shadow: 0 4px 20px rgba(240,165,0,0.4);
}
.btn-accent:hover {
    transform: translateY(-2px); color: #fff;
    box-shadow: 0 8px 30px rgba(240,165,0,0.6);
}
.btn-outline {
    background: transparent; color: var(--text-light);
    border: 2px solid rgba(255,255,255,0.3);
}
.btn-outline:hover {
    border-color: var(--primary); color: var(--primary);
    transform: translateY(-2px);
}
.btn-sm { padding: 8px 20px; font-size: 0.9rem; }

/* ========================================
   Header & Navigation
   ======================================== */
#header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(10,14,26,0.95); backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    transition: all var(--transition);
}
#header.scrolled { background: rgba(10,14,26,0.98); box-shadow: 0 4px 20px rgba(0,0,0,0.5); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.logo { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.logo-icon {
    width: 42px; height: 42px; background: var(--gradient-btn);
    border-radius: 10px; display: flex; align-items: center; justify-content: center;
    font-size: 1.3rem; font-weight: 900; color: #fff;
}
.logo-text { font-size: 1.3rem; font-weight: 800; color: var(--text-light); }
.logo-text span { color: var(--accent); }
.nav-menu { display: flex; align-items: center; gap: 4px; }
.nav-menu a {
    padding: 8px 16px; border-radius: var(--radius-sm); color: var(--text-muted);
    font-size: 0.95rem; font-weight: 500; transition: all var(--transition);
}
.nav-menu a:hover, .nav-menu a.active {
    color: var(--text-light); background: rgba(255,255,255,0.07);
}
.header-actions { display: flex; align-items: center; gap: 12px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--text-main); border-radius: 2px; transition: all var(--transition); }

/* ========================================
   Search Bar
   ======================================== */
.search-bar-wrap {
    background: rgba(17,24,39,0.95); border-bottom: 1px solid var(--border);
    padding: 10px 0;
}
.search-bar-inner { display: flex; align-items: center; gap: 12px; max-width: 700px; margin: 0 auto; padding: 0 20px; }
.search-input-wrap {
    flex: 1; display: flex; align-items: center;
    background: rgba(255,255,255,0.06); border: 1px solid var(--border);
    border-radius: 50px; padding: 8px 20px; gap: 10px;
    transition: border-color var(--transition);
}
.search-input-wrap:focus-within { border-color: var(--primary); }
.search-input-wrap input {
    flex: 1; background: none; border: none; outline: none;
    color: var(--text-main); font-size: 0.95rem;
}
.search-input-wrap input::placeholder { color: var(--text-muted); }
.search-icon { color: var(--text-muted); font-size: 1rem; }
.search-btn {
    background: var(--gradient-btn); color: #fff; border: none;
    padding: 9px 24px; border-radius: 50px; font-size: 0.9rem;
    font-weight: 600; cursor: pointer; transition: all var(--transition);
}
.search-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 15px rgba(26,111,212,0.5); }
.search-hot { display: flex; align-items: center; gap: 8px; font-size: 0.82rem; color: var(--text-muted); flex-wrap: wrap; }
.search-hot span { color: var(--text-muted); }
.search-hot a {
    color: var(--text-muted); padding: 2px 10px; border-radius: 20px;
    border: 1px solid var(--border); font-size: 0.8rem;
    transition: all var(--transition);
}
.search-hot a:hover { color: var(--accent); border-color: var(--accent); }

/* ========================================
   Hero Banner / Slider
   ======================================== */
.hero {
    position: relative; min-height: 100vh; display: flex; align-items: center;
    overflow: hidden; padding-top: 120px;
}
.hero-bg {
    position: absolute; inset: 0; z-index: 0;
}
.hero-bg img {
    width: 100%; height: 100%; object-fit: cover; opacity: 0.35;
}
.hero-bg::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(10,14,26,0.9) 0%, rgba(13,31,60,0.7) 50%, rgba(10,14,26,0.85) 100%);
}
.hero-content { position: relative; z-index: 1; max-width: 700px; }
.hero-tag {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(26,111,212,0.15); border: 1px solid rgba(26,111,212,0.3);
    border-radius: 50px; padding: 6px 18px; margin-bottom: 24px;
    font-size: 0.85rem; color: var(--primary);
}
.hero-tag .dot { width: 6px; height: 6px; background: #22c55e; border-radius: 50%; animation: pulse 2s infinite; }
.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 900;
    line-height: 1.2; color: var(--text-light); margin-bottom: 20px;
}
.hero h1 .highlight { color: var(--accent); }
.hero p { font-size: 1.1rem; color: var(--text-muted); margin-bottom: 36px; max-width: 580px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 40px; margin-top: 60px; }
.hero-stat { text-align: center; }
.hero-stat .num { font-size: 2rem; font-weight: 800; color: var(--accent); }
.hero-stat .label { font-size: 0.85rem; color: var(--text-muted); }

/* Slider Dots */
.slider-dots { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); display: flex; gap: 8px; z-index: 2; }
.slider-dot { width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,0.3); cursor: pointer; transition: all var(--transition); }
.slider-dot.active { background: var(--accent); width: 24px; border-radius: 4px; }

/* ========================================
   Video Grid Section
   ======================================== */
.video-section { background: var(--bg-card); }
.video-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
@media (min-width: 992px) { .video-grid { grid-template-columns: repeat(4, 1fr); } }

.video-card {
    background: var(--bg-card2); border-radius: var(--radius);
    overflow: hidden; border: 1px solid var(--border);
    transition: all var(--transition); cursor: pointer;
}
.video-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(26,111,212,0.4); }
.video-thumb {
    position: relative; aspect-ratio: 16/9; overflow: hidden;
}
.video-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.video-card:hover .video-thumb img { transform: scale(1.08); }
.video-play-btn {
    position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
    background: rgba(0,0,0,0.3); opacity: 0; transition: opacity var(--transition);
}
.video-card:hover .video-play-btn { opacity: 1; }
.play-icon {
    width: 56px; height: 56px; background: rgba(26,111,212,0.9);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem; color: #fff; transform: scale(0.8);
    transition: transform var(--transition);
    box-shadow: 0 4px 20px rgba(26,111,212,0.6);
}
.video-card:hover .play-icon { transform: scale(1); }
.video-duration {
    position: absolute; bottom: 8px; right: 10px;
    background: rgba(0,0,0,0.75); color: #fff; font-size: 0.78rem;
    padding: 2px 8px; border-radius: 4px;
}
.video-tag {
    position: absolute; top: 10px; left: 10px;
    background: var(--primary); color: #fff; font-size: 0.72rem;
    padding: 3px 10px; border-radius: 4px; font-weight: 600;
}
.video-info { padding: 16px; }
.video-info h4 { font-size: 0.95rem; font-weight: 600; color: var(--text-light); margin-bottom: 8px; line-height: 1.4; }
.video-meta { display: flex; align-items: center; gap: 16px; font-size: 0.8rem; color: var(--text-muted); }
.video-meta span { display: flex; align-items: center; gap: 4px; }

/* ========================================
   About Section
   ======================================== */
.about-section { background: var(--bg-dark); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-img { position: relative; border-radius: var(--radius); overflow: hidden; }
.about-img img { width: 100%; border-radius: var(--radius); }
.about-img-badge {
    position: absolute; bottom: 24px; left: 24px;
    background: rgba(10,14,26,0.9); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 16px 20px;
    backdrop-filter: blur(10px);
}
.about-img-badge .num { font-size: 2rem; font-weight: 800; color: var(--accent); }
.about-img-badge .text { font-size: 0.85rem; color: var(--text-muted); }
.about-content h2 { font-size: 2rem; font-weight: 700; color: var(--text-light); margin-bottom: 20px; }
.about-content p { color: var(--text-muted); margin-bottom: 20px; }
.about-values { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 30px; }
.value-item {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-sm); padding: 16px;
}
.value-item .icon { font-size: 1.5rem; margin-bottom: 8px; }
.value-item h4 { font-size: 0.95rem; font-weight: 600; color: var(--text-light); margin-bottom: 4px; }
.value-item p { font-size: 0.85rem; color: var(--text-muted); margin: 0; }

/* ========================================
   Services Section
   ======================================== */
.services-section { background: var(--bg-card); }
.service-card {
    background: var(--bg-dark); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 32px; transition: all var(--transition);
}
.service-card:hover { border-color: var(--primary); transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.service-icon {
    width: 60px; height: 60px; background: rgba(26,111,212,0.15);
    border-radius: var(--radius); display: flex; align-items: center; justify-content: center;
    font-size: 1.6rem; margin-bottom: 20px;
    border: 1px solid rgba(26,111,212,0.2);
}
.service-card h3 { font-size: 1.15rem; font-weight: 700; color: var(--text-light); margin-bottom: 12px; }
.service-card p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 20px; }
.service-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.service-tag {
    background: rgba(26,111,212,0.1); color: var(--primary);
    border: 1px solid rgba(26,111,212,0.2); border-radius: 20px;
    padding: 3px 12px; font-size: 0.78rem;
}

/* ========================================
   Cases Section
   ======================================== */
.cases-section { background: var(--bg-dark); }
.case-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); overflow: hidden; transition: all var(--transition);
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(26,111,212,0.4); }
.case-img { aspect-ratio: 16/9; overflow: hidden; }
.case-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.case-card:hover .case-img img { transform: scale(1.06); }
.case-body { padding: 24px; }
.case-industry {
    display: inline-block; background: rgba(240,165,0,0.1); color: var(--accent);
    border: 1px solid rgba(240,165,0,0.2); border-radius: 20px;
    padding: 3px 12px; font-size: 0.78rem; margin-bottom: 12px;
}
.case-body h3 { font-size: 1.05rem; font-weight: 700; color: var(--text-light); margin-bottom: 10px; }
.case-body p { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 16px; }
.case-results { display: flex; flex-direction: column; gap: 6px; }
.case-result-item {
    display: flex; align-items: center; gap: 8px;
    font-size: 0.82rem; color: var(--text-muted);
}
.case-result-item::before { content: '✓'; color: #22c55e; font-weight: 700; }

/* ========================================
   News Section
   ======================================== */
.news-section { background: var(--bg-card); }
.news-card {
    background: var(--bg-dark); border: 1px solid var(--border);
    border-radius: var(--radius); overflow: hidden; transition: all var(--transition);
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card); border-color: rgba(26,111,212,0.3); }
.news-img { aspect-ratio: 16/9; overflow: hidden; }
.news-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.news-card:hover .news-img img { transform: scale(1.05); }
.news-body { padding: 20px; }
.news-cat {
    display: inline-block; background: rgba(26,111,212,0.1); color: var(--primary);
    border-radius: 4px; padding: 2px 10px; font-size: 0.78rem; margin-bottom: 10px;
}
.news-body h3 { font-size: 1rem; font-weight: 600; color: var(--text-light); margin-bottom: 8px; line-height: 1.5; }
.news-body p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 12px; }
.news-meta { display: flex; align-items: center; justify-content: space-between; font-size: 0.8rem; color: var(--text-muted); }

/* ========================================
   Reviews Section
   ======================================== */
.reviews-section { background: var(--bg-dark); }
.review-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 28px; transition: all var(--transition);
}
.review-card:hover { border-color: rgba(240,165,0,0.3); box-shadow: var(--shadow-card); }
.review-stars { color: var(--accent); font-size: 1.1rem; margin-bottom: 14px; }
.review-text { font-size: 0.92rem; color: var(--text-muted); line-height: 1.8; margin-bottom: 20px; font-style: italic; }
.review-author { display: flex; align-items: center; gap: 12px; }
.review-avatar {
    width: 44px; height: 44px; border-radius: 50%;
    background: var(--gradient-btn); display: flex; align-items: center;
    justify-content: center; font-size: 1.1rem; font-weight: 700; color: #fff;
    flex-shrink: 0;
}
.review-name { font-size: 0.95rem; font-weight: 600; color: var(--text-light); }
.review-date { font-size: 0.8rem; color: var(--text-muted); }
.review-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.review-tag {
    background: rgba(255,255,255,0.04); color: var(--text-muted);
    border: 1px solid var(--border); border-radius: 20px;
    padding: 2px 10px; font-size: 0.75rem;
}

/* ========================================
   FAQ Section
   ======================================== */
.faq-section { background: var(--bg-card); }
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item {
    background: var(--bg-dark); border: 1px solid var(--border);
    border-radius: var(--radius); margin-bottom: 12px; overflow: hidden;
    transition: border-color var(--transition);
}
.faq-item.open { border-color: rgba(26,111,212,0.4); }
.faq-question {
    display: flex; align-items: center; justify-content: space-between;
    padding: 20px 24px; cursor: pointer; font-size: 1rem;
    font-weight: 600; color: var(--text-light);
    transition: color var(--transition);
}
.faq-question:hover { color: var(--primary); }
.faq-arrow {
    width: 28px; height: 28px; border-radius: 50%;
    background: rgba(26,111,212,0.1); display: flex; align-items: center;
    justify-content: center; transition: transform var(--transition);
    flex-shrink: 0; color: var(--primary); font-size: 0.9rem;
}
.faq-item.open .faq-arrow { transform: rotate(180deg); background: rgba(26,111,212,0.2); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-answer-inner { padding: 0 24px 20px; font-size: 0.92rem; color: var(--text-muted); line-height: 1.8; }
.faq-item.open .faq-answer { max-height: 300px; }

/* ========================================
   Partners Section
   ======================================== */
.partners-section { background: var(--bg-dark); }
.partners-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; align-items: center; }
.partner-logo {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-sm); padding: 20px 16px;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.85rem; font-weight: 600; color: var(--text-muted);
    transition: all var(--transition); text-align: center;
    min-height: 70px;
}
.partner-logo:hover { border-color: var(--primary); color: var(--primary); background: rgba(26,111,212,0.05); }

/* ========================================
   Contact Section
   ======================================== */
.contact-section { background: var(--bg-card); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
.contact-info h2 { font-size: 1.8rem; font-weight: 700; color: var(--text-light); margin-bottom: 20px; }
.contact-info p { color: var(--text-muted); margin-bottom: 30px; }
.contact-items { display: flex; flex-direction: column; gap: 16px; }
.contact-item { display: flex; align-items: flex-start; gap: 16px; }
.contact-item-icon {
    width: 44px; height: 44px; background: rgba(26,111,212,0.1);
    border: 1px solid rgba(26,111,212,0.2); border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.1rem; flex-shrink: 0;
}
.contact-item-text .label { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 2px; }
.contact-item-text .value { font-size: 0.95rem; color: var(--text-light); font-weight: 500; }
.map-placeholder {
    background: var(--bg-dark); border: 1px solid var(--border);
    border-radius: var(--radius); height: 280px; display: flex;
    align-items: center; justify-content: center; color: var(--text-muted);
    font-size: 0.9rem; margin-top: 24px; flex-direction: column; gap: 10px;
}
.map-placeholder .map-icon { font-size: 2rem; }
.qr-codes { display: flex; gap: 20px; margin-top: 24px; }
.qr-item { text-align: center; }
.qr-box {
    width: 100px; height: 100px; background: var(--bg-dark);
    border: 1px solid var(--border); border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    font-size: 0.75rem; color: var(--text-muted); margin-bottom: 8px;
}
.qr-label { font-size: 0.8rem; color: var(--text-muted); }

/* ========================================
   Footer
   ======================================== */
#footer {
    background: #060a14; border-top: 1px solid var(--border);
    padding: 60px 0 30px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 50px; }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.8; }
.footer-col h4 { font-size: 1rem; font-weight: 700; color: var(--text-light); margin-bottom: 20px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a { font-size: 0.88rem; color: var(--text-muted); transition: color var(--transition); }
.footer-col ul li a:hover { color: var(--primary); }
.footer-bottom {
    border-top: 1px solid var(--border); padding-top: 24px;
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 12px;
}
.footer-bottom p { font-size: 0.82rem; color: var(--text-muted); }
.footer-social { display: flex; gap: 12px; }
.social-link {
    width: 36px; height: 36px; background: rgba(255,255,255,0.05);
    border: 1px solid var(--border); border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.9rem; color: var(--text-muted); transition: all var(--transition);
}
.social-link:hover { background: var(--primary); border-color: var(--primary); color: #fff; }
.update-time { font-size: 0.8rem; color: var(--text-muted); }

/* ========================================
   Breadcrumb
   ======================================== */
.breadcrumb-wrap { background: var(--bg-card); border-bottom: 1px solid var(--border); padding: 12px 0; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--text-muted); }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--border); }
.breadcrumb .current { color: var(--text-light); }

/* ========================================
   Page Hero (Inner Pages)
   ======================================== */
.page-hero {
    background: var(--gradient-hero); padding: 120px 0 60px;
    border-bottom: 1px solid var(--border); text-align: center;
}
.page-hero h1 { font-size: 2.5rem; font-weight: 800; color: var(--text-light); margin-bottom: 16px; }
.page-hero p { font-size: 1.05rem; color: var(--text-muted); max-width: 600px; margin: 0 auto; }

/* ========================================
   Process Steps
   ======================================== */
.process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.process-step {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 28px 24px; text-align: center;
    position: relative; transition: all var(--transition);
}
.process-step:hover { border-color: var(--primary); transform: translateY(-4px); }
.step-num {
    width: 48px; height: 48px; background: var(--gradient-btn);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; font-weight: 800; color: #fff; margin: 0 auto 16px;
}
.process-step h4 { font-size: 1rem; font-weight: 600; color: var(--text-light); margin-bottom: 8px; }
.process-step p { font-size: 0.85rem; color: var(--text-muted); }

/* ========================================
   Stats Bar
   ======================================== */
.stats-bar { background: var(--primary-dark); padding: 40px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat-item { text-align: center; }
.stat-item .num { font-size: 2.2rem; font-weight: 800; color: #fff; }
.stat-item .unit { font-size: 1rem; color: rgba(255,255,255,0.7); }
.stat-item .label { font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-top: 4px; }

/* ========================================
   Animations
   ======================================== */
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.3); }
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}
.animate-fade-in { animation: fadeInUp 0.6s ease forwards; }
.animate-slide-in { animation: slideInLeft 0.6s ease forwards; }

/* ========================================
   Lazy Load
   ======================================== */
img[data-src] { opacity: 0; transition: opacity 0.4s; }
img.loaded { opacity: 1; }

/* ========================================
   Scrollbar
   ======================================== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: rgba(26,111,212,0.4); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .partners-grid { grid-template-columns: repeat(3, 1fr); }
    .process-steps { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .section { padding: 50px 0; }
    .section-header h2 { font-size: 1.7rem; }
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
    .about-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .hero-stats { gap: 24px; }
    .hero-stat .num { font-size: 1.5rem; }
    .nav-menu { display: none; position: fixed; top: 70px; left: 0; right: 0; bottom: 0; background: rgba(10,14,26,0.98); flex-direction: column; align-items: center; justify-content: center; gap: 20px; z-index: 999; }
    .nav-menu.open { display: flex; }
    .nav-menu a { font-size: 1.2rem; padding: 12px 24px; }
    .nav-toggle { display: flex; }
    .header-actions .btn { display: none; }
    .video-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .partners-grid { grid-template-columns: repeat(2, 1fr); }
    .process-steps { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .about-values { grid-template-columns: 1fr; }
    .search-hot { display: none; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.8rem; }
    .hero-actions { flex-direction: column; }
    .video-grid { grid-template-columns: 1fr; }
    .grid-4 { grid-template-columns: 1fr; }
}