/* ============================================
   9b娱乐 · 潮乐无限 · 独家设计系统
   风格：暖系潮流杂志风 · 珊瑚×青绿
   ============================================ */

/* 基础重置 */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

body {
    font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
    overflow-x:hidden;
    background:#FFFAF5;
    color:#2D3436;
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
}

/* ===== 自定义属性 ===== */
:root {
    --coral: #FF6B6B;
    --coral-light: #FF8E8E;
    --coral-dark: #E05555;
    --teal: #2EC4B6;
    --teal-light: #5DD9C9;
    --teal-dark: #1FA89B;
    --gold: #FFD93D;
    --gold-light: #FFE680;
    --cream: #FFFAF5;
    --cream-dark: #FFF0E5;
    --text-primary: #2D3436;
    --text-secondary: #6C7A89;
    --text-light: #95A5A6;
    --shadow-soft: 0 8px 30px rgba(255,107,107,0.12);
    --shadow-card: 0 4px 20px rgba(45,52,54,0.06);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

/* ===== 滚动条美化 ===== */
::-webkit-scrollbar { width:8px; }
::-webkit-scrollbar-track { background:#FFF0E5; border-radius:4px; }
::-webkit-scrollbar-thumb { background:var(--coral); border-radius:4px; }
::-webkit-scrollbar-thumb:hover { background:var(--coral-dark); }

::selection { background:var(--coral); color:#fff; }

/* ===== 核心布局 ===== */
.container { max-width:1200px; margin:0 auto; padding:0 24px; }

.section { padding:100px 0; position:relative; }
.section:nth-child(even) { background:var(--cream-dark); }

/* 装饰性斜线背景 */
.section::before {
    content:'';
    position:absolute;
    top:0; left:0;
    width:100%; height:6px;
    background: linear-gradient(90deg, var(--coral), var(--gold), var(--teal));
    opacity:0.3;
}
.section:first-child::before { display:none; }

/* ===== 导航 ===== */
.site-header {
    position:fixed; top:0; left:0; width:100%; z-index:1000;
    background:rgba(255,250,245,0.92);
    backdrop-filter:blur(16px) saturate(180%);
    -webkit-backdrop-filter:blur(16px) saturate(180%);
    border-bottom:2px solid transparent;
    transition:var(--transition);
}
.site-header::after {
    content:'';
    position:absolute; bottom:-2px; left:0; width:100%; height:2px;
    background:linear-gradient(90deg, var(--coral), var(--teal), var(--gold));
    opacity:0.6;
}

.header-inner {
    display:flex; align-items:center; justify-content:space-between;
    height:72px; max-width:1200px; margin:0 auto; padding:0 24px;
}

.logo {
    display:flex; align-items:center; gap:10px;
    font-weight:800; font-size:1.35rem; text-decoration:none; color:var(--text-primary);
    letter-spacing:-0.5px;
    transition:var(--transition);
}
.logo:hover { transform:scale(1.02); }

.logo-icon {
    width:40px; height:40px;
    border-radius:12px;
    display:flex; align-items:center; justify-content:center;
    font-size:1.2rem;
    background:linear-gradient(135deg, var(--coral), var(--gold));
    color:#fff;
    box-shadow:0 4px 12px rgba(255,107,107,0.3);
}

.main-nav { display:flex; align-items:center; gap:32px; list-style:none; }
.main-nav a {
    text-decoration:none; font-size:0.9rem; font-weight:500;
    color:var(--text-secondary);
    position:relative; padding:4px 0;
    transition:var(--transition);
}
.main-nav a::after {
    content:''; position:absolute; bottom:-2px; left:0;
    width:0; height:2px;
    background:var(--coral);
    border-radius:2px;
    transition:var(--transition);
}
.main-nav a:hover { color:var(--coral); }
.main-nav a:hover::after { width:100%; }

.nav-cta {
    padding:10px 24px !important; border-radius:50px !important;
    background:linear-gradient(135deg, var(--coral), var(--coral-dark));
    color:#fff !important; font-weight:600 !important;
    box-shadow:0 4px 16px rgba(255,107,107,0.25);
    transition:var(--transition) !important;
}
.nav-cta::after { display:none !important; }
.nav-cta:hover { transform:translateY(-2px) scale(1.03) !important; box-shadow:0 6px 24px rgba(255,107,107,0.35) !important; color:#fff !important; }

.menu-toggle { display:none; background:none; border:none; font-size:1.4rem; cursor:pointer; color:var(--text-primary); padding:8px; border-radius:8px; transition:var(--transition); }
.menu-toggle:hover { background:rgba(255,107,107,0.1); }

/* ===== Hero ===== */
.hero {
    min-height:85vh;
    display:flex; align-items:center;
    position:relative;
    padding-top:72px;
    background: linear-gradient(165deg, #FFFAF5 0%, #FFF0E5 40%, #FFE8D6 100%);
    overflow:hidden;
}
.hero::before {
    content:'';
    position:absolute; top:-30%; right:-10%;
    width:600px; height:600px;
    border-radius:50%;
    background:radial-gradient(circle, rgba(255,107,107,0.08) 0%, transparent 70%);
    pointer-events:none;
}
.hero::after {
    content:'';
    position:absolute; bottom:-20%; left:-5%;
    width:500px; height:500px;
    border-radius:50%;
    background:radial-gradient(circle, rgba(46,196,182,0.06) 0%, transparent 70%);
    pointer-events:none;
}

.hero-content { max-width:720px; position:relative; z-index:2; }

.hero-eyebrow {
    display:inline-block;
    font-size:0.8rem; font-weight:700;
    padding:6px 18px; border-radius:50px;
    margin-bottom:20px;
    background:linear-gradient(135deg, rgba(255,107,107,0.12), rgba(255,217,61,0.12));
    color:var(--coral-dark);
    letter-spacing:1.5px;
    text-transform:uppercase;
    border:1px solid rgba(255,107,107,0.15);
}

.hero h1 {
    font-size:3.6rem; line-height:1.1; margin-bottom:18px;
    font-weight:800; letter-spacing:-1.5px;
    background:linear-gradient(135deg, var(--text-primary) 40%, var(--coral));
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
    background-clip:text;
}
.hero h1::after {
    content:'✦';
    display:inline-block;
    -webkit-text-fill-color:var(--gold);
    font-size:2.8rem; margin-left:6px;
    animation:heroSparkle 3s ease-in-out infinite;
}
@keyframes heroSparkle {
    0%,100% { opacity:0.6; transform:rotate(0deg) scale(0.9); }
    50% { opacity:1; transform:rotate(30deg) scale(1.1); }
}

.hero p {
    font-size:1.15rem; color:var(--text-secondary);
    max-width:560px; margin-bottom:36px;
    line-height:1.7;
}

.hero-buttons { display:flex; gap:16px; }

/* ===== 按钮 ===== */
.btn {
    display:inline-flex; align-items:center; gap:10px;
    padding:14px 32px; border-radius:50px;
    font-weight:600; font-size:0.95rem;
    cursor:pointer; border:none; text-decoration:none;
    transition:var(--transition);
    letter-spacing:0.3px;
}
.btn-primary {
    background:linear-gradient(135deg, var(--coral), var(--coral-dark));
    color:#fff;
    box-shadow:0 4px 20px rgba(255,107,107,0.3);
}
.btn-primary:hover {
    transform:translateY(-3px);
    box-shadow:0 8px 32px rgba(255,107,107,0.4);
}
.btn-outline {
    background:transparent;
    border:2px solid var(--coral);
    color:var(--coral);
}
.btn-outline:hover {
    background:var(--coral);
    color:#fff;
    transform:translateY(-3px);
}

/* ===== 标签/标题 ===== */
.section-label {
    display:inline-block;
    font-size:0.8rem; font-weight:700;
    letter-spacing:3px; text-transform:uppercase;
    margin-bottom:14px;
    color:var(--coral);
    position:relative;
    padding-left:36px;
}
.section-label::before {
    content:''; position:absolute; left:0; top:50%;
    width:24px; height:2px;
    background:var(--coral);
    transform:translateY(-50%);
}

.section-title {
    font-size:2.4rem; font-weight:800;
    margin-bottom:14px; letter-spacing:-0.5px;
    color:var(--text-primary);
    line-height:1.2;
}
.section-title .highlight {
    background:linear-gradient(135deg, var(--coral), var(--gold));
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
    background-clip:text;
}

.section-desc {
    max-width:600px; color:var(--text-secondary);
    font-size:1.05rem; margin-bottom:44px; line-height:1.7;
}

/* ===== 卡片网格 ===== */
.cards-grid {
    display:grid;
    grid-template-columns:repeat(auto-fill, minmax(280px, 1fr));
    gap:28px;
}

.category-card {
    border-radius:var(--radius-md);
    padding:32px 28px;
    background:#fff;
    border:1px solid rgba(255,107,107,0.08);
    transition:var(--transition);
    position:relative;
    overflow:hidden;
    box-shadow:var(--shadow-card);
}
.category-card::before {
    content:'';
    position:absolute; top:0; left:0; width:100%; height:4px;
    background:linear-gradient(90deg, var(--coral), var(--gold));
    opacity:0;
    transition:var(--transition);
}
.category-card:hover {
    transform:translateY(-6px);
    box-shadow:0 12px 40px rgba(255,107,107,0.15);
    border-color:rgba(255,107,107,0.2);
}
.category-card:hover::before { opacity:1; }

.card-icon {
    width:52px; height:52px; border-radius:14px;
    display:flex; align-items:center; justify-content:center;
    margin-bottom:18px; font-size:1.5rem;
    background:linear-gradient(135deg, rgba(255,107,107,0.1), rgba(255,217,61,0.1));
    transition:var(--transition);
}
.category-card:hover .card-icon {
    background:linear-gradient(135deg, var(--coral), var(--gold));
    color:#fff;
    transform:scale(1.05);
}

.category-card h3 {
    font-size:1.15rem; font-weight:700; margin-bottom:8px;
    color:var(--text-primary);
}
.category-card p {
    font-size:0.9rem; color:var(--text-secondary); line-height:1.6;
    margin-bottom:16px;
}

.card-link {
    font-weight:600; font-size:0.85rem; text-decoration:none;
    color:var(--coral); display:inline-flex; align-items:center; gap:6px;
    transition:var(--transition);
}
.card-link::after {
    content:'→'; transition:var(--transition);
}
.card-link:hover { color:var(--coral-dark); gap:10px; }
.card-link:hover::after { transform:translateX(4px); }

/* ===== 特性块 ===== */
.feature-block {
    display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:center;
}

.feature-image {
    border-radius:var(--radius-lg);
    overflow:hidden;
    box-shadow:0 16px 48px rgba(255,107,107,0.12);
    position:relative;
}
.feature-image::after {
    content:'';
    position:absolute; inset:0;
    border:2px solid rgba(255,255,255,0.1);
    border-radius:var(--radius-lg);
    pointer-events:none;
}
.feature-image img { width:100%; height:auto; display:block; transition:var(--transition); }
.feature-image:hover img { transform:scale(1.03); }

.feature-text h3 {
    font-size:1.6rem; font-weight:700; margin-bottom:16px;
    color:var(--text-primary);
}
.feature-text p {
    color:var(--text-secondary); line-height:1.7; margin-bottom:20px;
}

.feature-list { list-style:none; }
.feature-list li {
    padding:10px 0; display:flex; align-items:center; gap:12px;
    color:var(--text-primary); font-weight:500; font-size:0.95rem;
    border-bottom:1px solid rgba(45,52,54,0.04);
}
.feature-list li:last-child { border-bottom:none; }
.feature-list li::before {
    content:'✦';
    font-weight:700; color:var(--teal);
    font-size:0.8rem;
}

/* ===== 数据条 ===== */
.stats-bar {
    display:grid; grid-template-columns:repeat(4,1fr); gap:24px; text-align:center;
}

.stat-item {
    padding:32px 20px; border-radius:var(--radius-md);
    background:#fff; border:1px solid rgba(255,107,107,0.06);
    box-shadow:var(--shadow-card);
    transition:var(--transition);
    position:relative;
}
.stat-item::before {
    content:''; position:absolute; top:0; left:50%; transform:translateX(-50%);
    width:40px; height:3px;
    background:linear-gradient(90deg, var(--coral), var(--teal));
    border-radius:0 0 3px 3px;
    opacity:0; transition:var(--transition);
}
.stat-item:hover { transform:translateY(-4px); box-shadow:0 12px 32px rgba(255,107,107,0.12); }
.stat-item:hover::before { opacity:1; width:60px; }

.stat-number {
    font-size:2.8rem; font-weight:800;
    background:linear-gradient(135deg, var(--coral), var(--teal));
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
    background-clip:text;
    line-height:1.1;
}
.stat-label { font-size:0.9rem; color:var(--text-secondary); margin-top:8px; font-weight:500; }

/* ===== 内容墙 ===== */
.content-wall {
    display:grid;
    grid-template-columns:repeat(auto-fill, minmax(300px, 1fr));
    gap:28px;
}

.content-wall-item {
    border-radius:var(--radius-md);
    overflow:hidden;
    background:#fff;
    border:1px solid rgba(255,107,107,0.06);
    transition:var(--transition);
    box-shadow:var(--shadow-card);
}
.content-wall-item:hover {
    transform:translateY(-6px);
    box-shadow:0 16px 40px rgba(255,107,107,0.12);
    border-color:rgba(255,107,107,0.15);
}

.content-wall-item img {
    width:100%; height:220px; object-fit:cover;
    transition:var(--transition);
}
.content-wall-item:hover img { transform:scale(1.05); }

.content-wall-body { padding:24px; }
.content-wall-body .tag {
    display:inline-block; font-size:0.7rem; font-weight:700;
    padding:3px 12px; border-radius:50px;
    background:rgba(46,196,182,0.1); color:var(--teal-dark);
    letter-spacing:0.5px; margin-bottom:10px;
    text-transform:uppercase;
}
.content-wall-body h4 {
    font-size:1.1rem; font-weight:700; margin-bottom:6px;
    color:var(--text-primary); line-height:1.3;
}
.content-wall-body p {
    font-size:0.9rem; color:var(--text-secondary); line-height:1.6;
}
.content-wall-body .date {
    font-size:0.8rem; color:var(--text-light); margin-top:12px; display:block;
}

/* ===== FAQ ===== */
.faq-list { max-width:800px; margin:0 auto; }

.faq-item {
    border:1px solid rgba(255,107,107,0.1);
    border-radius:var(--radius-sm);
    margin-bottom:10px;
    overflow:hidden;
    cursor:pointer;
    background:#fff;
    transition:var(--transition);
    box-shadow:0 2px 8px rgba(0,0,0,0.02);
}
.faq-item:hover { border-color:rgba(255,107,107,0.25); box-shadow:0 4px 16px rgba(255,107,107,0.06); }

.faq-item .faq-question {
    padding:18px 24px; font-weight:600; font-size:1rem;
    display:flex; justify-content:space-between; align-items:center;
    color:var(--text-primary);
    user-select:none;
}
.faq-item .faq-question::after {
    content:'+'; font-size:1.3rem; font-weight:300;
    color:var(--coral); transition:var(--transition);
}
.faq-item.open .faq-question::after { content:'−'; transform:rotate(180deg); }

.faq-item .faq-answer {
    padding:0 24px 18px; display:none;
    color:var(--text-secondary); line-height:1.7; font-size:0.95rem;
}
.faq-item.open .faq-answer { display:block; }
.faq-item.open { border-color:rgba(255,107,107,0.2); }

/* ===== CTA横幅 ===== */
.cta-banner {
    padding:64px 40px; text-align:center;
    border-radius:var(--radius-lg);
    background:linear-gradient(135deg, var(--coral), var(--coral-dark), #E05570);
    color:#fff;
    position:relative; overflow:hidden;
    box-shadow:0 16px 48px rgba(255,107,107,0.25);
}
.cta-banner::before {
    content:''; position:absolute; top:-50%; right:-20%;
    width:400px; height:400px; border-radius:50%;
    background:rgba(255,255,255,0.05);
    pointer-events:none;
}
.cta-banner::after {
    content:'✦ ✦ ✦'; position:absolute; bottom:20px; right:30px;
    font-size:2rem; opacity:0.1; letter-spacing:8px;
    pointer-events:none;
}
.cta-banner h2 {
    color:#fff; font-size:2rem; font-weight:800; margin-bottom:12px;
    position:relative; z-index:2;
}
.cta-banner p {
    color:rgba(255,255,255,0.85); margin-bottom:28px; font-size:1.05rem;
    position:relative; z-index:2;
}
.cta-banner .btn-primary {
    background:#fff; color:var(--coral-dark);
    box-shadow:0 4px 20px rgba(0,0,0,0.1);
}
.cta-banner .btn-primary:hover { transform:translateY(-3px) scale(1.02); box-shadow:0 8px 32px rgba(0,0,0,0.15); }

/* ===== 页脚 ===== */
.site-footer {
    padding:64px 0 28px;
    background:linear-gradient(180deg, #FFFAF5, #FFF0E5);
    border-top:1px solid rgba(255,107,107,0.08);
    position:relative;
}
.site-footer::before {
    content:'';
    position:absolute; top:0; left:0; width:100%; height:2px;
    background:linear-gradient(90deg, var(--coral), var(--gold), var(--teal));
    opacity:0.3;
}

.footer-grid {
    display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px;
}

.footer-brand .logo { margin-bottom:16px; }
.footer-brand p {
    color:var(--text-secondary); font-size:0.9rem; line-height:1.7; max-width:300px;
}
.footer-brand .social-links { display:flex; gap:12px; margin-top:20px; }
.footer-brand .social-links a {
    width:38px; height:38px; border-radius:50%;
    display:flex; align-items:center; justify-content:center;
    background:rgba(255,107,107,0.08); color:var(--coral);
    text-decoration:none; font-size:0.9rem;
    transition:var(--transition);
}
.footer-brand .social-links a:hover { background:var(--coral); color:#fff; transform:translateY(-2px); }

.footer-col h5 {
    font-size:0.9rem; font-weight:700; margin-bottom:18px;
    color:var(--text-primary); letter-spacing:0.5px;
    text-transform:uppercase;
}
.footer-col ul { list-style:none; }
.footer-col ul li { margin-bottom:10px; }
.footer-col ul a {
    color:var(--text-secondary); text-decoration:none; font-size:0.9rem;
    transition:var(--transition); display:inline-flex; align-items:center; gap:4px;
}
.footer-col ul a:hover { color:var(--coral); transform:translateX(4px); }

.footer-bottom {
    border-top:1px solid rgba(255,107,107,0.1);
    margin-top:48px; padding-top:24px;
    text-align:center; font-size:0.85rem;
    color:var(--text-light);
    display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px;
}
.footer-bottom a { color:var(--coral); text-decoration:none; }

/* ===== 工具类 ===== */
.text-accent { color:var(--coral); font-weight:600; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; color:var(--text-secondary); line-height:1.7; }
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .hero h1 { font-size:2.8rem; }
    .section-title { font-size:2rem; }
    .feature-block { gap:40px; }
    .footer-grid { gap:32px; }
}

@media (max-width: 768px) {
    .feature-block { grid-template-columns:1fr; }
    .stats-bar { grid-template-columns:repeat(2,1fr); }
    .footer-grid { grid-template-columns:1fr 1fr; }

    .main-nav { display:none; }
    .menu-toggle { display:flex; }
    .main-nav.open {
        display:flex; flex-direction:column;
        position:absolute; top:72px; left:0; width:100%;
        background:rgba(255,250,245,0.98);
        backdrop-filter:blur(16px);
        padding:24px 32px; gap:16px;
        border-bottom:2px solid rgba(255,107,107,0.1);
        box-shadow:0 16px 40px rgba(0,0,0,0.06);
    }
    .main-nav.open a { padding:10px 0; font-size:1rem; }

    .hero { min-height:70vh; }
    .hero h1 { font-size:2.4rem; }
    .hero p { font-size:1rem; }
    .hero-buttons { flex-direction:column; gap:12px; }

    .section { padding:64px 0; }
    .section-title { font-size:1.6rem; }
    .cards-grid { gap:20px; }
    .content-wall { gap:20px; }

    .cta-banner { padding:48px 24px; }
    .cta-banner h2 { font-size:1.5rem; }

    .footer-bottom { flex-direction:column; }
}

@media (max-width: 480px) {
    .cards-grid,
    .content-wall,
    .stats-bar { grid-template-columns:1fr; }
    .footer-grid { grid-template-columns:1fr; }

    .hero h1 { font-size:1.8rem; }
    .hero { min-height:60vh; }
    .section-title { font-size:1.3rem; }
    .header-inner { height:60px; }

    .stat-number { font-size:2.2rem; }
    .btn { padding:12px 24px; font-size:0.9rem; }
    .logo { font-size:1.1rem; }
    .logo-icon { width:34px; height:34px; font-size:1rem; }
}

/* ===== 装饰性动画 ===== */
@keyframes float {
    0%,100% { transform:translateY(0px); }
    50% { transform:translateY(-12px); }
}

.hero .floating-element {
    animation:float 6s ease-in-out infinite;
}

/* 卡片入场动画 */
.category-card, .content-wall-item, .stat-item {
    animation:cardFadeIn 0.6s ease-out both;
}
@keyframes cardFadeIn {
    from { opacity:0; transform:translateY(24px); }
    to { opacity:1; transform:translateY(0); }
}
.category-card:nth-child(2) { animation-delay:0.08s; }
.category-card:nth-child(3) { animation-delay:0.16s; }
.category-card:nth-child(4) { animation-delay:0.24s; }
.category-card:nth-child(5) { animation-delay:0.32s; }
.category-card:nth-child(6) { animation-delay:0.40s; }

/* ===== 分隔线装饰 ===== */
.divider {
    width:80px; height:3px;
    background:linear-gradient(90deg, var(--coral), var(--teal));
    border-radius:3px; margin:20px 0;
}
.divider-center { margin:20px auto; }

/* ===== 导航悬浮高亮 ===== */
.main-nav .active a { color:var(--coral); font-weight:600; }
.main-nav .active a::after { width:100%; }

/* ===== 回到顶部 ===== */
.back-to-top {
    position:fixed; bottom:32px; right:32px;
    width:48px; height:48px; border-radius:50%;
    background:linear-gradient(135deg, var(--coral), var(--coral-dark));
    color:#fff; border:none; cursor:pointer;
    font-size:1.2rem; box-shadow:0 4px 20px rgba(255,107,107,0.3);
    transition:var(--transition); opacity:0; transform:translateY(20px);
    z-index:999; display:flex; align-items:center; justify-content:center;
}
.back-to-top.visible { opacity:1; transform:translateY(0); }
.back-to-top:hover { transform:translateY(-4px); box-shadow:0 8px 32px rgba(255,107,107,0.4); }