```css
:root {
    --primary: #1a1a2e;
    --accent: #e94560;
    --accent-hover: #d63852;
    --accent2: #0f3460;
    --gold: #f5b342;
    --bg-body: #f8f9fc;
    --bg-light: #ffffff;
    --bg-soft: #f0f2f8;
    --text-main: #1e1e2f;
    --text-sub: #5a5a72;
    --border: #e2e5ee;
    --radius-sm: 8px;
    --radius: 14px;
    --radius-lg: 20px;
    --shadow-sm: 0 2px 12px rgba(26, 26, 46, 0.06);
    --shadow-md: 0 8px 30px rgba(26, 26, 46, 0.10);
    --shadow-lg: 0 20px 50px rgba(26, 26, 46, 0.14);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --glass-bg: rgba(255, 255, 255, 0.72);
    --glass-border: rgba(255, 255, 255, 0.35);
}

body.dark-mode {
    --primary: #e8e8f0;
    --accent: #ff5c7a;
    --accent-hover: #ff3d60;
    --accent2: #4a9eff;
    --gold: #ffd166;
    --bg-body: #0d0d1a;
    --bg-light: #1a1a2e;
    --bg-soft: #14142a;
    --text-main: #e8e8f0;
    --text-sub: #a0a0b8;
    --border: #2a2a45;
    --glass-bg: rgba(26, 26, 46, 0.78);
    --glass-border: rgba(255, 255, 255, 0.08);
    --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.25);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.45);
}

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

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg-body);
    color: var(--text-main);
    line-height: 1.75;
    font-size: 16px;
    overflow-x: hidden;
    transition: background 0.35s ease, color 0.35s ease;
}

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

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

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

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

img,
svg {
    max-width: 100%;
    display: block;
}

a {
    transition: var(--transition);
}

/* ===== 吸顶导航 ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: blur(18px) saturate(180%);
    -webkit-backdrop-filter: blur(18px) saturate(180%);
    border-bottom: 1px solid var(--glass-border);
    transition: var(--transition);
}

.site-header.scrolled {
    box-shadow: var(--shadow-md);
    background: var(--glass-bg);
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    flex-shrink: 0;
}

.logo svg {
    width: 36px;
    height: 36px;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.logo:hover svg {
    transform: rotate(-8deg) scale(1.06);
}

.logo-text {
    font-size: 22px;
    font-weight: 800;
    color: var(--accent);
    letter-spacing: -0.5px;
    white-space: nowrap;
}

.logo-text span {
    color: var(--text-main);
    font-weight: 600;
}

.nav-links {
    display: flex;
    gap: 6px;
    list-style: none;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-sub);
    font-size: 15px;
    font-weight: 500;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    white-space: nowrap;
    position: relative;
}

.nav-links a:hover {
    color: var(--accent);
    background: rgba(233, 69, 96, 0.08);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-input {
    width: 180px;
    padding: 8px 36px 8px 14px;
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 14px;
    outline: none;
    transition: var(--transition);
    background: var(--bg-soft);
    color: var(--text-main);
    font-family: inherit;
}

.search-input:focus {
    width: 240px;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(233, 69, 96, 0.12);
    background: var(--bg-light);
}

.search-input::placeholder {
    color: var(--text-sub);
    opacity: 0.7;
}

.search-btn {
    position: absolute;
    right: 6px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-sub);
    padding: 4px;
    display: flex;
    align-items: center;
    transition: var(--transition);
}

.search-btn:hover {
    color: var(--accent);
}

.search-btn svg {
    width: 18px;
    height: 18px;
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border);
    border-radius: 50%;
    width: 38px;
    height: 38px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    color: var(--text-sub);
    flex-shrink: 0;
}

.theme-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: rotate(20deg);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    width: 40px;
    height: 40px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    color: var(--text-main);
    transition: var(--transition);
    flex-shrink: 0;
}

.mobile-menu-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.mobile-menu-btn svg {
    width: 22px;
    height: 22px;
}

/* ===== 移动菜单 ===== */
.mobile-nav {
    display: none;
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-light);
    z-index: 999;
    padding: 20px;
    flex-direction: column;
    gap: 4px;
    overflow-y: auto;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mobile-nav.active {
    display: flex;
}

.mobile-nav a {
    text-decoration: none;
    color: var(--text-main);
    font-size: 17px;
    font-weight: 500;
    padding: 14px 16px;
    border-radius: 10px;
    transition: var(--transition);
}

.mobile-nav a:hover {
    background: var(--bg-soft);
    color: var(--accent);
    padding-left: 22px;
}

/* ===== 主内容偏移 ===== */
main {
    padding-top: 68px;
}

/* ===== 面包屑 ===== */
.breadcrumb {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 20px 0;
    font-size: 14px;
    color: var(--text-sub);
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.breadcrumb a {
    color: var(--text-sub);
    text-decoration: none;
    transition: var(--transition);
}

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

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

/* ===== 英雄区 ===== */
.hero {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: #fff;
    padding: 70px 20px 60px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(233, 69, 96, 0.18) 0%, transparent 70%);
    border-radius: 50%;
    animation: floatOrb 12s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(245, 179, 66, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    animation: floatOrb 15s ease-in-out infinite reverse;
}

@keyframes floatOrb {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(-30px, 20px) scale(1.08);
    }
}

.hero-inner {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(233, 69, 96, 0.18);
    border: 1px solid rgba(233, 69, 96, 0.35);
    color: #ff8fa3;
    font-size: 13px;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 20px;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.hero-badge svg {
    width: 16px;
    height: 16px;
}

.hero h1 {
    font-size: clamp(28px, 5vw, 48px);
    font-weight: 900;
    line-height: 1.25;
    margin-bottom: 18px;
    letter-spacing: -1px;
}

.hero h1 em {
    color: var(--accent);
    font-style: normal;
    position: relative;
}

.hero h1 em::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 0;
    right: 0;
    height: 8px;
    background: rgba(233, 69, 96, 0.25);
    border-radius: 4px;
    z-index: -1;
}

.hero p {
    font-size: clamp(15px, 2vw, 18px);
    color: rgba(255, 255, 255, 0.78);
    max-width: 680px;
    line-height: 1.8;
    margin-bottom: 30px;
}

.hero-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 28px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-family: inherit;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 6px 20px rgba(233, 69, 96, 0.35);
}

.btn-primary::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
    transition: left 0.6s ease;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(233, 69, 96, 0.45);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, 0.35);
}

.btn-outline:hover {
    border-color: #fff;
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-2px);
}

.hero-stats {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 32px;
    font-weight: 900;
    color: var(--gold);
    line-height: 1.2;
    font-variant-numeric: tabular-nums;
}

.stat-label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.55);
    margin-top: 2px;
}

/* ===== 轮播 ===== */
.carousel {
    max-width: 1200px;
    margin: 40px auto 0;
    padding: 0 20px;
    position: relative;
}

.carousel-track {
    display: flex;
    overflow: hidden;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
}

.carousel-slide {
    min-width: 100%;
    display: none;
    padding: 0;
}

.carousel-slide.active {
    display: block;
    animation: fadeSlide 0.5s ease;
}

@keyframes fadeSlide {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.carousel-content {
    display: flex;
    align-items: center;
    gap: 30px;
    padding: 36px 40px;
    flex-wrap: wrap;
}

.carousel-content svg {
    flex-shrink: 0;
    transition: transform 0.5s ease;
}

.carousel-slide.active .carousel-content svg {
    animation: popIn 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes popIn {
    from {
        transform: scale(0.85);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.carousel-text h3 {
    font-size: 22px;
    font-weight: 800;
    margin-bottom: 8px;
    color: var(--text-main);
}

.carousel-text p {
    font-size: 15px;
    color: var(--text-sub);
    max-width: 500px;
    line-height: 1.7;
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 18px;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    padding: 0;
}

.carousel-dot:hover {
    background: var(--accent);
    opacity: 0.6;
}

.carousel-dot.active {
    background: var(--accent);
    width: 28px;
    border-radius: 5px;
}

/* ===== 通用容器 ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 60px 0;
}

.section-alt {
    background: var(--bg-soft);
}

.section-title {
    font-size: clamp(24px, 3.5vw, 32px);
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
    line-height: 1.3;
}

.section-subtitle {
    font-size: 16px;
    color: var(--text-sub);
    margin-bottom: 40px;
    line-height: 1.7;
    max-width: 720px;
}

.section-title-wrap {
    margin-bottom: 36px;
}

/* ===== 卡片网格 ===== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.card {
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--gold));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

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

.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(233, 69, 96, 0.2);
}

.card-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

.card-icon svg {
    width: 26px;
    height: 26px;
}

.card h3 {
    font-size: 19px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-main);
}

.card p {
    font-size: 15px;
    color: var(--text-sub);
    line-height: 1.75;
}

/* ===== 文章卡片 ===== */
.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 22px;
}

.article-card {
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
}

.article-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(233, 69, 96, 0.15);
}

.article-thumb {
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.article-thumb svg {
    width: 100%;
    height: 100%;
    transition: transform 0.5s ease;
}

.article-card:hover .article-thumb svg {
    transform: scale(1.06);
}

.article-body {
    padding: 22px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    color: var(--text-sub);
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.article-tag {
    background: rgba(233, 69, 96, 0.1);
    color: var(--accent);
    font-size: 12px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 12px;
    transition: var(--transition);
}

.article-card:hover .article-tag {
    background: var(--accent);
    color: #fff;
}

.article-card h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.4;
}

.article-card h3 a {
    text-decoration: none;
    color: var(--text-main);
    transition: var(--transition);
}

.article-card h3 a:hover {
    color: var(--accent);
}

.article-card p {
    font-size: 14px;
    color: var(--text-sub);
    line-height: 1.7;
    flex: 1;
}

.read-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--accent);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    margin-top: 14px;
    transition: var(--transition);
}

.read-more:hover {
    gap: 10px;
}

/* ===== FAQ ===== */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 900px;
}

.faq-item {
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: rgba(233, 69, 96, 0.25);
    box-shadow: var(--shadow-sm);
}

.faq-item.open {
    border-color: rgba(233, 69, 96, 0.3);
    box-shadow: var(--shadow-sm);
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 20px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
    text-align: left;
    line-height: 1.5;
    font-family: inherit;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--accent);
}

.faq-question svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    transition: transform 0.3s;
    color: var(--accent);
}

.faq-item.open .faq-question svg {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-item.open .faq-answer {
    max-height: 600px;
}

.faq-answer-inner {
    padding: 0 24px 22px;
    font-size: 15px;
    color: var(--text-sub);
    line-height: 1.85;
}

/* ===== HowTo ===== */
.howto-steps {
    display: flex;
    flex-direction: column;
    gap: 0;
    max-width: 900px;
}

.step-item {
    display: flex;
    gap: 24px;
    padding: 28px;
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: var(--transition);
    position: relative;
}

.step-item:hover {
    box-shadow: var(--shadow-sm);
    border-color: rgba(233, 69, 96, 0.15);
    transform: translateX(4px);
}

.step-number {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 800;
    flex-shrink: 0;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.step-item:hover .step-number {
    transform: scale(1.1);
    box-shadow: 0 4px 16px rgba(233, 69, 96, 0.35);
}

.step-content h4 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-main);
}

.step-content p {
    font-size: 15px;
    color: var(--text-sub);
    line-height: 1.75;
}

.step-connector {
    width: 2px;
    height: 20px;
    background: var(--border);
    margin-left: 50px;
}

/* ===== 联系 ===== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 22px;
}

.contact-card {
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    text-align: center;
    transition: var(--transition);
}

.contact-card:hover {
    box-shadow: var(--shadow-sm);
    transform: translateY(-4px);
    border-color: rgba(233, 69, 96, 0.15);
}

.contact-card svg {
    width: 32px;
    height: 32px;
    color: var(--accent);
    margin: 0 auto 14px;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.contact-card:hover svg {
    transform: scale(1.15) translateY(-3px);
}

.contact-card h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-main);
}

.contact-card p {
    font-size: 14px;
    color: var(--text-sub);
    line-height: 1.7;
}

.contact-card a {
    color: var(--accent);
    text-decoration: none;
}

.contact-card a:hover {
    text-decoration: underline;
}

/* ===== 团队 ===== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 22px;
}

.team-card {
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    transition: var(--transition);
}

.team-card:hover {
    box-shadow: var(--shadow-sm);
    transform: translateY(-4px);
    border-color: rgba(233, 69, 96, 0.15);
}

.team-avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    margin: 0 auto 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.team-card:hover .team-avatar {
    transform: scale(1.08);
    box-shadow: 0 8px 24px rgba(233, 69, 96, 0.25);
}

.team-card h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--text-main);
}

.team-card p {
    font-size: 13px;
    color: var(--text-sub);
}

/* ===== 页脚 ===== */
.footer {
    background: #1a1a2e;
    color: rgba(255, 255, 255, 0.7);
    padding: 60px 0 0;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0.4;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 10px;
}

.footer h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 24px;
    height: 2px;
    background: var(--accent);
    border-radius: 1px;
}

.footer p {
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 10px;
}

.footer ul {
    list-style: none;
}

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

.footer ul a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
    display: inline-block;
}

.footer ul a:hover {
    color: var(--accent);
    transform: translateX(4px);
}

.footer-bottom {
    max-width: 1200px;
    margin: 40px auto 0;
    padding: 24px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
    margin: 0;
}

.footer-bottom-links {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
}

.footer-bottom-links a {
    color: rgba(255, 255, 255, 0.45);
    text-decoration: none;
    font-size: 13px;
    transition: var(--transition);
}

.footer-bottom-links a:hover {
    color: var(--accent);
}

/* ===== 返回顶部 ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 20px rgba(233, 69, 96, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 900;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--accent-hover);
    transform: translateY(-3px);
    box-shadow: 0 10px 28px rgba(233, 69, 96, 0.5);
}

.back-to-top svg {
    width: 22px;
    height: 22px;
}

/* ===== 滚动动画 ===== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 标签 ===== */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag {
    background: var(--bg-soft);
    color: var(--text-sub);
    font-size: 13px;
    padding: 6px 16px;
    border-radius: 20px;
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid var(--border);
}

.tag:hover {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(233, 69, 96, 0.3);
}

/* ===== 暗色模式补充 ===== */
body.dark-mode .card,
body.dark-mode .faq-item,
body.dark-mode .article-card,
body.dark-mode .contact-card,
body.dark-mode .step-item,
body.dark-mode .team-card {
    background: #1a1a2e;
    border-color: #2a2a45;
}

body.dark-mode .site-header {
    background: rgba(13, 13, 26, 0.88);
}

body.dark-mode .hero {
    background: linear-gradient(135deg, #0d0d1a 0%, #1a1a2e 100%);
}

body.dark-mode .stat-number {
    color: var(--accent);
}

body.dark-mode .nav-links a {
    color: #c0c0d8;
}

body.dark-mode .article-card h3 a {
    color: #e8e8f0;
}

body.dark-mode .article-card h3 a:hover {
    color: var(--accent);
}

body.dark-mode .faq-question {
    color: #e8e8f0;
}

body.dark-mode .footer {
    background: #0a0a16;
}

body.dark-mode .back-to-top {
    background: var(--accent);
}

body.dark-mode .search-input {
    background: #1a1a2e;
    color: #e8e8f0;
    border-color: #2a2a45;
}

body.dark-mode .search-input::placeholder {
    color: #6a6a88;
}

body.dark-mode .tag {
    background: #2a2a45;
    color: #c0c0d8;
}

body.dark-mode .section-title {
    color: #e8e8f0;
}

body.dark-mode .breadcrumb a {
    color: #a0a0b8;
}

body.dark-mode .breadcrumb span {
    color: #6a6a88;
}

body.dark-mode .mobile-nav {
    background: #0d0d1a;
}

body.dark-mode .mobile-nav a {
    color: #e8e8f0;
}

body.dark-mode .mobile-nav a:hover {
    background: #1a1a2e;
}

body.dark-mode .carousel-track {
    background: rgba(26, 26, 46, 0.78);
    border-color: rgba(255, 255, 255, 0.08);
}

body.dark-mode .carousel-text h3 {
    color: #e8e8f0;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .search-box {
        display: none;
    }

    .header-inner {
        height: 60px;
    }

    main {
        padding-top: 60px;
    }

    .mobile-nav {
        top: 60px;
    }

    .hero {
        padding: 50px 16px 40px;
    }

    .hero-stats {
        gap: 24px;
    }

    .stat-number {
        font-size: 26px;
    }

    .carousel-content {
        padding: 24px;
        flex-direction: column;
        text-align: center;
    }

    .carousel-text p {
        max-width: 100%;
    }

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

    .section {
        padding: 44px 0;
    }

    .step-item {
        padding: 20px;
        gap: 16px;
    }

    .step-connector {
        margin-left: 42px;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 42px;
        height: 42px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
    }

    .btn {
        justify-content: center;
    }

    .article-grid {
        grid-template-columns: 1fr;
    }

    .card-grid {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .team-grid {
        grid-template-columns: 1fr 1fr;
    }

    .hero-stats {
        gap: 18px;
    }

    .stat-number {
        font-size: 22px;
    }

    .stat-label {
        font-size: 12px;
    }

    .carousel-content svg {
        width: 90px;
        height: 90px;
    }

    .carousel-text h3 {
        font-size: 18px;
    }
}

/* ===== 打印 ===== */
@media print {
    .site-header,
    .back-to-top,
    .mobile-nav,
    .carousel-dots,
    .theme-toggle,
    .mobile-menu-btn {
        display: none !important;
    }

    main {
        padding-top: 0;
    }

    body {
        background: #fff;
        color: #000;
    }

    .hero {
        background: #f0f0f0;
        color: #000;
    }

    .card,
    .article-card,
    .faq-item,
    .step-item {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}
```