:/* 九游体育 style.css - 完整样式表 */
:root {
    --primary: #0f0c29;
    --secondary: #302b63;
    --accent: #e94560;
    --accent-light: #ff6b81;
    --accent-gradient: linear-gradient(135deg, #e94560, #ff6b81);
    --bg: #0a0a1a;
    --text: #eaeaea;
    --text-secondary: #b0b0c0;
    --card-bg: rgba(255,255,255,0.06);
    --card-border: rgba(255,255,255,0.08);
    --glass: rgba(255,255,255,0.1);
    --glass-strong: rgba(255,255,255,0.15);
    --shadow: 0 8px 32px rgba(0,0,0,0.4);
    --shadow-hover: 0 16px 48px rgba(233,69,96,0.2);
    --radius: 16px;
    --radius-sm: 10px;
    --radius-lg: 24px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

[data-theme="light"] {
    --primary: #ffffff;
    --secondary: #f0f2f5;
    --accent: #d4384a;
    --accent-light: #e85d6a;
    --accent-gradient: linear-gradient(135deg, #d4384a, #e85d6a);
    --bg: #f8f9fb;
    --text: #1a1a2e;
    --text-secondary: #5a5a7a;
    --card-bg: rgba(0,0,0,0.03);
    --card-border: rgba(0,0,0,0.06);
    --glass: rgba(0,0,0,0.05);
    --glass-strong: rgba(0,0,0,0.08);
    --shadow: 0 8px 32px rgba(0,0,0,0.08);
    --shadow-hover: 0 16px 48px rgba(212,56,74,0.15);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    transition: background var(--transition), color var(--transition);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-light); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* ========== HEADER ========== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--primary);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--glass);
    transition: background var(--transition), box-shadow var(--transition), border-color var(--transition);
}

header.scrolled {
    background: rgba(15, 12, 41, 0.92);
    box-shadow: 0 4px 30px rgba(0,0,0,0.3);
    border-bottom-color: var(--glass-strong);
}

[data-theme="light"] header.scrolled {
    background: rgba(255, 255, 255, 0.92);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.logo svg {
    width: 40px;
    height: 40px;
    filter: drop-shadow(0 2px 8px rgba(233,69,96,0.3));
    transition: transform var(--transition);
}

.logo:hover svg {
    transform: scale(1.05) rotate(-3deg);
}

.logo span {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 1px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

nav ul {
    display: flex;
    gap: 28px;
}

nav ul li a {
    color: var(--text);
    font-size: 0.95rem;
    font-weight: 500;
    padding: 6px 0;
    position: relative;
    transition: color var(--transition);
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2.5px;
    background: var(--accent-gradient);
    border-radius: 2px;
    transition: width var(--transition);
}

nav ul li a:hover::after,
nav ul li a.active::after {
    width: 100%;
}

nav ul li a:hover,
nav ul li a.active {
    color: var(--accent);
}

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

.theme-toggle,
.menu-toggle {
    background: var(--glass);
    border: 1px solid var(--card-border);
    color: var(--text);
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 1.2rem;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.theme-toggle:hover,
.menu-toggle:hover {
    background: var(--glass-strong);
    transform: scale(1.05);
}

.menu-toggle { display: none; }

/* ========== HERO ========== */
.hero {
    padding: 160px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(160deg, var(--primary) 0%, var(--secondary) 50%, #1a1a3e 100%);
}

.hero::before {
    content: '';
    position: absolute;
    top: -60%;
    left: -30%;
    width: 160%;
    height: 160%;
    background: radial-gradient(circle at 30% 40%, var(--accent) 0%, transparent 55%);
    opacity: 0.12;
    animation: heroGlow 10s ease-in-out infinite alternate;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -20%;
    right: -20%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 70% 60%, #ff6b81 0%, transparent 50%);
    opacity: 0.08;
    animation: heroGlow2 12s ease-in-out infinite alternate;
    pointer-events: none;
}

@keyframes heroGlow {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(5%, 8%) scale(1.1); }
}

@keyframes heroGlow2 {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(-8%, -5%) scale(1.15); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.2rem;
    font-weight: 900;
    margin-bottom: 24px;
    line-height: 1.2;
    letter-spacing: -0.5px;
    animation: fadeInUp 0.8s ease;
}

.hero h1 span {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.2rem;
    max-width: 650px;
    margin: 0 auto 36px;
    opacity: 0.9;
    color: var(--text-secondary);
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.4s both;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 40px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    transition: all var(--transition);
    border: none;
    cursor: pointer;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: 0 4px 20px rgba(233,69,96,0.35);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(233,69,96,0.5);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
    transition: left 0.6s ease;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--text);
    color: var(--text);
}

.btn-outline:hover {
    background: var(--text);
    color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

/* ========== SECTIONS ========== */
section { padding: 90px 0; }

.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 50px;
    letter-spacing: -0.3px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--accent-gradient);
    border-radius: 2px;
    margin: 12px auto 0;
}

.section-title span {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========== GRID ========== */
.grid { display: grid; gap: 30px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ========== CARDS ========== */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius);
    padding: 32px 28px;
    box-shadow: var(--shadow);
    border: 1px solid var(--card-border);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

.card:hover::before {
    transform: scaleX(1);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: var(--glass-strong);
}

.card-icon {
    margin-bottom: 18px;
    display: inline-flex;
}

.card-icon svg {
    width: 52px;
    height: 52px;
    transition: transform var(--transition);
}

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

.card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.card p {
    opacity: 0.85;
    font-size: 0.95rem;
    line-height: 1.7;
}

.card small {
    opacity: 0.6;
    font-size: 0.85rem;
}

/* ========== CAROUSEL ========== */
.carousel {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow);
}

.carousel-inner {
    display: flex;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.carousel-item {
    min-width: 100%;
    padding: 70px 50px;
    text-align: center;
    background: linear-gradient(135deg, var(--secondary), var(--primary));
}

.carousel-item h2 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 18px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.carousel-item p {
    max-width: 550px;
    margin: 0 auto 24px;
    font-size: 1.05rem;
    color: var(--text-secondary);
}

.carousel-controls {
    position: absolute;
    top: 50%;
    width: 100%;
    display: flex;
    justify-content: space-between;
    transform: translateY(-50%);
    padding: 0 20px;
    pointer-events: none;
}

.carousel-controls button {
    pointer-events: auto;
    background: var(--glass);
    border: 1px solid var(--card-border);
    color: var(--text);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.4rem;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
}

.carousel-controls button:hover {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    transform: scale(1.1);
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    padding: 20px 0;
}

.carousel-dots button {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid var(--glass-strong);
    background: transparent;
    cursor: pointer;
    transition: all var(--transition);
}

.carousel-dots button.active {
    background: var(--accent);
    border-color: var(--accent);
    transform: scale(1.2);
}

/* ========== FAQ ========== */
.faq-item {
    border-bottom: 1px solid var(--card-border);
    padding: 20px 0;
    cursor: pointer;
    transition: background var(--transition);
}

.faq-item:hover {
    background: var(--card-bg);
    border-radius: var(--radius-sm);
    padding-left: 12px;
    padding-right: 12px;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 1.05rem;
    gap: 16px;
}

.faq-question::after {
    content: '+';
    font-size: 1.6rem;
    font-weight: 300;
    transition: transform 0.4s ease, content 0s;
    flex-shrink: 0;
    color: var(--accent);
}

.faq-item.open .faq-question::after {
    content: '−';
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease, padding 0.3s ease, opacity 0.3s ease;
    padding-top: 0;
    opacity: 0;
    color: var(--text-secondary);
    line-height: 1.8;
}

.faq-item.open .faq-answer {
    max-height: 500px;
    padding-top: 16px;
    opacity: 1;
}

/* ========== FOOTER ========== */
footer {
    background: var(--primary);
    border-top: 1px solid var(--card-border);
    padding: 60px 0 30px;
    margin-top: 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    margin-bottom: 20px;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent);
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    opacity: 0.7;
    font-size: 0.9rem;
    transition: all var(--transition);
    padding: 2px 0;
}

.footer-col ul li a:hover {
    opacity: 1;
    padding-left: 6px;
    color: var(--accent-light);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--card-border);
    font-size: 0.85rem;
    opacity: 0.7;
    line-height: 2;
}

.footer-bottom p {
    margin-bottom: 4px;
}

/* ========== BACK TO TOP ========== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--accent-gradient);
    color: #fff;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    z-index: 999;
    box-shadow: 0 4px 16px rgba(233,69,96,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: scale(1.1) translateY(-3px);
    box-shadow: 0 8px 24px rgba(233,69,96,0.5);
}

/* ========== SCROLL ANIMATION ========== */
.fade-in {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========== BREADCRUMB ========== */
.breadcrumb {
    padding: 16px 0;
    font-size: 0.85rem;
    opacity: 0.7;
    display: flex;
    align-items: center;
    gap: 6px;
}

.breadcrumb a {
    color: var(--text);
    transition: color var(--transition);
}

.breadcrumb a:hover {
    color: var(--accent);
}

.breadcrumb span {
    color: var(--text-secondary);
}

/* ========== SEARCH ========== */
.search-box {
    display: flex;
    gap: 12px;
    max-width: 500px;
    margin: 0 auto;
}

.search-box input {
    flex: 1;
    padding: 14px 20px;
    border-radius: 50px;
    border: 1px solid var(--card-border);
    background: var(--card-bg);
    color: var(--text);
    font-size: 1rem;
    transition: all var(--transition);
    outline: none;
}

.search-box input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(233,69,96,0.15);
}

.search-box input::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

.search-box button {
    padding: 14px 28px;
    border-radius: 50px;
    background: var(--accent-gradient);
    color: #fff;
    border: none;
    cursor: pointer;
    font-weight: 600;
    transition: all var(--transition);
}

.search-box button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(233,69,96,0.4);
}

/* ========== STATS ========== */
.stat-number {
    font-size: 2.6rem;
    font-weight: 900;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .hero h1 { font-size: 2.6rem; }
}

@media (max-width: 768px) {
    nav ul {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--primary);
        padding: 24px 20px;
        gap: 18px;
        border-bottom: 1px solid var(--glass);
        box-shadow: 0 8px 24px rgba(0,0,0,0.2);
        backdrop-filter: blur(16px);
    }

    nav ul.open {
        display: flex;
    }

    .menu-toggle {
        display: flex;
    }

    .header-inner {
        padding: 12px 16px;
    }

    .logo span {
        font-size: 1.2rem;
    }

    .hero {
        padding: 130px 0 70px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .btn {
        padding: 14px 30px;
        font-size: 0.9rem;
    }

    section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 1.7rem;
        margin-bottom: 36px;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .carousel-item {
        padding: 50px 30px;
    }

    .carousel-item h2 {
        font-size: 1.6rem;
    }

    .carousel-controls button {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }

    .card {
        padding: 24px 20px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
        font-size: 1.2rem;
    }

    .search-box {
        flex-direction: column;
        max-width: 100%;
    }

    .search-box button {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.6rem;
    }

    .hero p {
        font-size: 0.9rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
    }

    .section-title {
        font-size: 1.4rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

/* ========== UTILITY ========== */
.text-center { text-align: center; }
.mt-20 { margin-top: 20px; }
.mt-30 { margin-top: 30px; }
.mb-20 { margin-bottom: 20px; }
.gap-16 { gap: 16px; }

/* Smooth scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: var(--glass-strong);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

/* Selection */
::selection {
    background: rgba(233, 69, 96, 0.3);
    color: var(--text);
}

/* Focus visible */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Print */
@media print {
    header, footer, .back-to-top, .carousel-controls, .theme-toggle, .menu-toggle {
        display: none;
    }
    body {
        background: #fff;
        color: #000;
    }
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}