/* =============================================
   开云体育官方网站 - 主样式文件
   go-login-kaiyunsport.com
   ============================================= */

/* ---- CSS Variables ---- */
:root {
    --primary:    #0a3d8f;
    --primary-dk: #072d6b;
    --accent:     #e8a020;
    --accent-dk:  #c8880a;
    --bg:         #f5f7fb;
    --bg-light:   #eef2f9;
    --text:       #1a1a2e;
    --text-light: #555577;
    --border:     #dde3f0;
    --white:      #ffffff;
    --shadow:     0 4px 24px rgba(10,61,143,.10);
    --shadow-lg:  0 8px 40px rgba(10,61,143,.18);
    --radius:     12px;
    --radius-sm:  8px;
    --transition: .25s ease;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

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

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 13px 32px;
    border-radius: 50px;
    font-size: .95rem;
    font-weight: 700;
    transition: all var(--transition);
    cursor: pointer;
    white-space: nowrap;
    letter-spacing: .02em;
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-dk));
    color: var(--white);
    box-shadow: 0 4px 20px rgba(232,160,32,.4);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(232,160,32,.55);
}
.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,.7);
}
.btn-outline:hover {
    background: rgba(255,255,255,.15);
    border-color: var(--white);
}
.btn-blue {
    background: linear-gradient(135deg, var(--primary), var(--primary-dk));
    color: var(--white);
    box-shadow: 0 4px 20px rgba(10,61,143,.35);
}
.btn-blue:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(10,61,143,.5);
}

/* ---- Header ---- */
#site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dk) 100%);
    box-shadow: 0 2px 20px rgba(0,0,0,.3);
    transition: box-shadow var(--transition);
}
.header-inner {
    display: flex;
    align-items: center;
    gap: 24px;
    height: 70px;
}

/* ---- Logo ---- */
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    text-decoration: none;
}
.logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dk));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 900;
    color: var(--white);
    letter-spacing: -.02em;
    flex-shrink: 0;
}
.logo-text { display: flex; flex-direction: column; }
.logo-name {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--white);
    line-height: 1.2;
    letter-spacing: .04em;
}
.logo-tagline {
    font-size: .65rem;
    color: rgba(255,255,255,.55);
    letter-spacing: .06em;
    text-transform: uppercase;
}

/* ---- Navigation ---- */
.main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: auto;
}
.nav-link {
    padding: 8px 14px;
    border-radius: 8px;
    font-size: .88rem;
    font-weight: 600;
    color: rgba(255,255,255,.85);
    transition: all var(--transition);
    white-space: nowrap;
}
.nav-link:hover, .nav-link.active {
    background: rgba(255,255,255,.15);
    color: var(--white);
}
.nav-cta {
    background: linear-gradient(135deg, var(--accent), var(--accent-dk));
    color: var(--white) !important;
    border-radius: 50px;
    padding: 8px 20px;
}
.nav-cta:hover {
    background: linear-gradient(135deg, var(--accent-dk), #a87008) !important;
    transform: translateY(-1px);
}

/* ---- Header Search ---- */
.header-search {
    display: flex;
    align-items: center;
    background: rgba(255,255,255,.12);
    border-radius: 50px;
    overflow: hidden;
    flex-shrink: 0;
}
.search-input {
    background: transparent;
    border: none;
    outline: none;
    padding: 8px 16px;
    color: var(--white);
    font-size: .85rem;
    width: 160px;
    font-family: inherit;
}
.search-input::placeholder { color: rgba(255,255,255,.5); }
.search-btn {
    padding: 8px 14px;
    color: rgba(255,255,255,.8);
    font-size: 1rem;
    transition: color var(--transition);
}
.search-btn:hover { color: var(--accent); }

/* ---- Mobile Toggle ---- */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 6px;
    margin-left: auto;
}
.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: all var(--transition);
}

/* ---- Hero Slider ---- */
.hero-slider {
    position: relative;
    height: 600px;
    overflow: hidden;
    background: var(--primary-dk);
}
.slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity .8s ease;
}
.slide.active { opacity: 1; }
.slide-bg {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(.45);
}
.slide-content {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 0 60px;
    max-width: 720px;
}
.slide-tag {
    display: inline-block;
    background: var(--accent);
    color: var(--white);
    font-size: .75rem;
    font-weight: 700;
    padding: 5px 16px;
    border-radius: 50px;
    margin-bottom: 18px;
    letter-spacing: .06em;
    width: fit-content;
}
.slide-title {
    font-size: 3rem;
    font-weight: 900;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: 20px;
    text-shadow: 0 2px 20px rgba(0,0,0,.5);
}
.slide-desc {
    font-size: 1rem;
    color: rgba(255,255,255,.85);
    margin-bottom: 32px;
    line-height: 1.8;
    max-width: 560px;
}
.slide-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.slider-arrows {
    position: absolute;
    bottom: 50%;
    transform: translateY(50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    pointer-events: none;
}
.arrow-btn {
    pointer-events: all;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255,255,255,.15);
    color: var(--white);
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition);
    backdrop-filter: blur(4px);
}
.arrow-btn:hover { background: rgba(255,255,255,.3); }
.slider-dots {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
}
.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,.4);
    cursor: pointer;
    transition: all var(--transition);
}
.dot.active {
    background: var(--accent);
    width: 28px;
    border-radius: 5px;
}

/* ---- Stats Bar ---- */
.stats-bar {
    background: linear-gradient(135deg, var(--primary), var(--primary-dk));
    padding: 32px 0;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    text-align: center;
}
.stat-item { padding: 8px; }
.stat-num {
    display: block;
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--accent);
    line-height: 1.1;
}
.stat-label {
    display: block;
    font-size: .82rem;
    color: rgba(255,255,255,.75);
    margin-top: 6px;
}

/* ---- Sections ---- */
.section { padding: 80px 0; }
.section-alt { background: var(--bg-light); }
.section-title {
    font-size: 2rem;
    font-weight: 900;
    color: var(--primary);
    text-align: center;
    margin-bottom: 12px;
}
.section-subtitle {
    font-size: .95rem;
    color: var(--text-light);
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

/* ---- Video Grid ---- */
.video-section { background: var(--white); }
.video-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
}
.video-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: all var(--transition);
    cursor: pointer;
}
.video-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}
.video-thumb {
    position: relative;
    padding-top: 56.25%;
    overflow: hidden;
    background: #111;
}
.video-thumb img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.06); }
.play-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,.45);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition);
}
.play-btn {
    width: 60px;
    height: 60px;
    background: rgba(255,255,255,.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: var(--primary);
    transform: scale(.8);
    transition: transform var(--transition);
}
.video-card:hover .play-btn { transform: scale(1); }
.video-live-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: #e53935;
    color: var(--white);
    font-size: .7rem;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 5px;
    letter-spacing: .04em;
}
.live-dot {
    width: 6px;
    height: 6px;
    background: var(--white);
    border-radius: 50%;
    animation: blink 1.2s infinite;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:.3} }
.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0,0,0,.7);
    color: var(--white);
    font-size: .72rem;
    padding: 3px 8px;
    border-radius: 4px;
}
.video-info { padding: 16px; }
.video-category {
    font-size: .72rem;
    font-weight: 700;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: .06em;
    margin-bottom: 6px;
}
.video-title {
    font-size: .92rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1.5;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.video-meta {
    display: flex;
    gap: 14px;
    font-size: .75rem;
    color: var(--text-light);
}

/* ---- About Grid ---- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.about-img img {
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    width: 100%;
    object-fit: cover;
    max-height: 420px;
}
.about-content p { color: var(--text-light); margin-bottom: 14px; }
.about-tags { display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0; }
.tag {
    background: rgba(10,61,143,.08);
    color: var(--primary);
    font-size: .78rem;
    font-weight: 700;
    padding: 6px 16px;
    border-radius: 50px;
    border: 1px solid rgba(10,61,143,.15);
}
.milestones { display: flex; flex-direction: column; gap: 14px; margin-top: 20px; }
.milestone {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    padding: 14px 16px;
    background: var(--bg-light);
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--accent);
}
.milestone-year {
    font-size: .78rem;
    font-weight: 800;
    color: var(--primary);
    white-space: nowrap;
    flex-shrink: 0;
}
.milestone-text { font-size: .85rem; color: var(--text-light); }

/* ---- Services Grid ---- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
}
.service-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 32px 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}
.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transition: transform var(--transition);
}
.service-card:hover::before { transform: scaleX(1); }
.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}
.service-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}
.service-card h3 {
    font-size: 1rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 10px;
}
.service-card p { font-size: .88rem; color: var(--text-light); line-height: 1.7; }
.service-link {
    display: inline-block;
    margin-top: 16px;
    font-size: .82rem;
    font-weight: 700;
    color: var(--accent);
    transition: color var(--transition);
}
.service-link:hover { color: var(--accent-dk); }

/* ---- Cases Grid ---- */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
}
.case-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: all var(--transition);
}
.case-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}
.case-img { position: relative; }
.case-img img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform .4s ease;
}
.case-card:hover .case-img img { transform: scale(1.05); }
.case-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--primary);
    color: var(--white);
    font-size: .7rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 50px;
    z-index: 1;
}
.case-body { padding: 20px; }
.case-body h3 {
    font-size: .95rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 8px;
}
.case-body p { font-size: .85rem; color: var(--text-light); line-height: 1.6; }
.case-result {
    display: flex;
    gap: 16px;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}
.result-item { flex: 1; text-align: center; }
.result-num {
    display: block;
    font-size: 1.2rem;
    font-weight: 900;
    color: var(--accent);
}
.result-label { font-size: .72rem; color: var(--text-light); }

/* ---- News Grid ---- */
.news-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 30px;
    margin-top: 40px;
}
.news-featured {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}
.news-featured-img img {
    width: 100%;
    height: 240px;
    object-fit: cover;
}
.news-featured-body { padding: 24px; }
.news-tag {
    display: inline-block;
    background: rgba(10,61,143,.1);
    color: var(--primary);
    font-size: .72rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 50px;
    margin-bottom: 12px;
}
.news-featured-body h2, .news-featured-body h3 {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 10px;
    line-height: 1.5;
}
.news-featured-body p { font-size: .88rem; color: var(--text-light); line-height: 1.7; }
.news-date { font-size: .78rem; color: #999; margin-top: 12px; }
.news-list { display: flex; flex-direction: column; gap: 16px; }
.news-item {
    display: flex;
    gap: 14px;
    background: var(--white);
    border-radius: var(--radius-sm);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: all var(--transition);
}
.news-item:hover { transform: translateX(4px); box-shadow: var(--shadow-lg); }
.news-item-img { flex-shrink: 0; }
.news-item-img img {
    width: 100px;
    height: 80px;
    object-fit: cover;
}
.news-item-body { padding: 12px 14px 12px 0; }
.news-item-body h4 {
    font-size: .88rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 6px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-item-body p {
    font-size: .78rem;
    color: var(--text-light);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-item-date { font-size: .72rem; color: #999; margin-top: 6px; }

/* ---- Reviews ---- */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 40px;
}
.review-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: all var(--transition);
}
.review-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.review-stars { color: var(--accent); font-size: 1rem; margin-bottom: 12px; }
.review-text {
    font-size: .88rem;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 16px;
    font-style: italic;
}
.reviewer { display: flex; align-items: center; gap: 12px; }
.reviewer-avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 700;
    font-size: 1rem;
    flex-shrink: 0;
}
.reviewer-name { font-size: .88rem; font-weight: 700; color: var(--text); }
.reviewer-role { font-size: .75rem; color: var(--text-light); }

/* ---- Partners ---- */
.partners-logos {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 40px;
}
.partner-logo {
    background: var(--white);
    border-radius: var(--radius-sm);
    padding: 20px 16px;
    text-align: center;
    font-size: .82rem;
    font-weight: 700;
    color: var(--text-light);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: all var(--transition);
}
.partner-logo:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-3px);
}

/* ---- FAQ ---- */
.faq-list { max-width: 800px; margin: 40px auto 0; }
.faq-item {
    background: var(--white);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    overflow: hidden;
}
.faq-question {
    width: 100%;
    text-align: left;
    padding: 18px 20px;
    font-size: .95rem;
    font-weight: 700;
    color: var(--text);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    transition: background var(--transition);
}
.faq-question:hover { background: var(--bg-light); }
.faq-question.open { color: var(--primary); background: rgba(10,61,143,.05); }
.faq-icon {
    font-size: 1.3rem;
    font-weight: 400;
    color: var(--primary);
    flex-shrink: 0;
    transition: transform var(--transition);
}
.faq-question.open .faq-icon { transform: rotate(45deg); }
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease;
}
.faq-answer.open { max-height: 400px; }
.faq-answer p {
    padding: 0 20px 18px;
    font-size: .88rem;
    color: var(--text-light);
    line-height: 1.8;
}

/* ---- Contact ---- */
.contact-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: start;
}
.contact-info h2 {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--primary);
    margin-bottom: 14px;
}
.contact-info > p { color: var(--text-light); margin-bottom: 28px; }
.contact-items { display: flex; flex-direction: column; gap: 16px; }
.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 16px;
    background: var(--bg-light);
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--primary);
}
.contact-icon { font-size: 1.3rem; flex-shrink: 0; }
.contact-detail { display: flex; flex-direction: column; gap: 3px; }
.contact-detail strong { font-size: .88rem; color: var(--primary); }
.contact-detail span { font-size: .85rem; color: var(--text-light); }
.contact-map {
    background: var(--bg-light);
    border-radius: var(--radius);
    height: 320px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--border);
    color: var(--text-light);
    text-align: center;
    gap: 8px;
}
.map-placeholder-icon { font-size: 3rem; }

/* ---- Footer ---- */
#site-footer {
    background: linear-gradient(135deg, #0a1a3a 0%, #071228 100%);
    color: rgba(255,255,255,.8);
    padding: 60px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p {
    font-size: .82rem;
    color: rgba(255,255,255,.5);
    line-height: 1.7;
    margin-bottom: 20px;
}
.footer-qr { display: flex; gap: 16px; }
.qr-item { text-align: center; }
.qr-box {
    width: 56px;
    height: 56px;
    background: rgba(255,255,255,.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 6px;
}
.qr-label { font-size: .68rem; color: rgba(255,255,255,.4); }
.footer-col h4 {
    font-size: .9rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 16px;
    letter-spacing: .04em;
}
.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.footer-links a, .footer-links span {
    font-size: .82rem;
    color: rgba(255,255,255,.5);
    transition: color var(--transition);
}
.footer-links a:hover { color: var(--accent); }
.footer-bottom {
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}
.footer-bottom p {
    font-size: .8rem;
    color: rgba(255,255,255,.4);
}
.footer-bottom a {
    color: rgba(255,255,255,.5);
    transition: color var(--transition);
}
.footer-bottom a:hover { color: var(--accent); }
.social-links { display: flex; gap: 10px; }
.social-link {
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .78rem;
    font-weight: 700;
    color: rgba(255,255,255,.6);
    transition: all var(--transition);
}
.social-link:hover {
    background: var(--accent);
    color: var(--white);
    transform: translateY(-2px);
}

/* ---- Video Modal ---- */
.video-modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.85);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity .3s ease;
    backdrop-filter: blur(4px);
}
.video-modal.open { opacity: 1; pointer-events: all; }
.modal-inner {
    background: #111;
    border-radius: var(--radius);
    width: 90%;
    max-width: 800px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 80px rgba(0,0,0,.8);
}
.modal-close {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,.15);
    border-radius: 50%;
    color: var(--white);
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
    transition: background var(--transition);
}
.modal-close:hover { background: rgba(255,255,255,.3); }
.modal-video { aspect-ratio: 16/9; }

/* ---- Scroll Top ---- */
#scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(10,61,143,.4);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
    z-index: 999;
}
#scroll-top.show { opacity: 1; pointer-events: all; }
#scroll-top:hover {
    background: var(--accent);
    transform: translateY(-3px);
}

/* ---- Breadcrumb ---- */
.breadcrumb-bar {
    background: var(--bg-light);
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
}
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: .82rem;
    color: var(--text-light);
}
.breadcrumb a { color: var(--primary); }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb-sep { color: var(--border); }

/* ---- Page Hero ---- */
.page-hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dk) 100%);
    padding: 60px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('/assets/images/banner_hero.jpg') center/cover no-repeat;
    opacity: .12;
}
.page-hero-content { position: relative; z-index: 1; }
.page-hero h1 {
    font-size: 2.4rem;
    font-weight: 900;
    color: var(--white);
    margin-bottom: 12px;
}
.page-hero p {
    font-size: 1rem;
    color: rgba(255,255,255,.8);
    max-width: 600px;
    margin: 0 auto;
}

/* ---- Inner Section ---- */
.inner-section { padding: 60px 0; }

/* ---- Card Grids ---- */
.card-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.card-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.content-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 28px 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: all var(--transition);
}
.content-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.content-card h3 {
    font-size: 1rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 10px;
}
.content-card p { font-size: .88rem; color: var(--text-light); line-height: 1.7; }

/* ---- Utilities ---- */
.text-center { text-align: center; }
.mt-40 { margin-top: 40px; }

/* ---- Lazy Load ---- */
img[loading="lazy"] { opacity: 0; transition: opacity .4s ease; }
img[loading="lazy"].loaded, img:not([loading]) { opacity: 1; }

/* =============================================
   RESPONSIVE
   ============================================= */

/* Tablet */
@media (max-width: 1024px) {
    .hero-slider { height: 500px; }
    .slide-title { font-size: 2.4rem; }
    .slide-content { padding: 0 40px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .video-grid { grid-template-columns: repeat(2, 1fr); }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .cases-grid { grid-template-columns: repeat(2, 1fr); }
    .reviews-grid { grid-template-columns: repeat(2, 1fr); }
    .partners-logos { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .card-grid-4 { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .contact-grid { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
}

/* Mobile */
@media (max-width: 768px) {
    .header-inner { height: 60px; }
    .header-search { display: none; }
    .main-nav {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--primary-dk);
        flex-direction: column;
        align-items: stretch;
        padding: 16px;
        gap: 4px;
        max-height: 0;
        overflow: hidden;
        transition: max-height .35s ease;
    }
    .main-nav.open { max-height: 400px; }
    .nav-link { padding: 12px 16px; border-radius: 8px; }
    .menu-toggle { display: flex; }
    .hero-slider { height: 420px; }
    .slide-title { font-size: 1.8rem; }
    .slide-content { padding: 0 24px; }
    .slide-desc { font-size: .88rem; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .stat-num { font-size: 1.7rem; }
    .section { padding: 50px 0; }
    .section-title { font-size: 1.6rem; }
    .video-grid { grid-template-columns: 1fr; }
    .services-grid { grid-template-columns: 1fr; }
    .cases-grid { grid-template-columns: 1fr; }
    .reviews-grid { grid-template-columns: 1fr; }
    .partners-logos { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .card-grid-2 { grid-template-columns: 1fr; }
    .card-grid-3 { grid-template-columns: 1fr; }
    .card-grid-4 { grid-template-columns: repeat(2, 1fr); }
    .page-hero h1 { font-size: 1.8rem; }
    .slide-actions { flex-direction: column; gap: 10px; }
    .slide-actions .btn { width: 100%; max-width: 240px; }
    #scroll-top { bottom: 16px; right: 16px; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .card-grid-4 { grid-template-columns: 1fr 1fr; }
    .partners-logos { grid-template-columns: 1fr 1fr; }
    .slide-title { font-size: 1.5rem; }
}