/* ===== 全局重置 & 基础 ===== */
*, *::before, *::after {
    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, sans-serif;
    background: #f8f9fa;
    color: #1a1a2e;
    transition: background 0.3s ease, color 0.3s ease;
    line-height: 1.6;
    overflow-x: hidden;
}

body.dark {
    background: #0a0a0f;
    color: #e0e0e0;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    display: block;
    max-width: 100%;
    height: auto;
}

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

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 30px;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 16px;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    color: #fff;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 107, 53, 0.4);
}

.btn-outline {
    background: transparent;
    border: 2px solid #ff6b35;
    color: #ff6b35;
}

.btn-outline:hover {
    background: #ff6b35;
    color: #fff;
    transform: translateY(-2px);
}

/* ===== 通用区块 ===== */
.section {
    padding: 80px 0;
}

.section-title {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 12px;
    text-align: center;
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-sub {
    text-align: center;
    color: #666;
    margin-bottom: 48px;
    font-size: 18px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

body.dark .section-sub {
    color: #aaa;
}

/* ===== 卡片 ===== */
.card {
    background: #fff;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.06);
    transition: all 0.4s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

body.dark .card {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.08);
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

/* ===== 网格 ===== */
.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);
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

body.dark .navbar {
    background: rgba(10, 10, 15, 0.85);
    border-color: rgba(255, 255, 255, 0.05);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    font-size: 28px;
    font-weight: 900;
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -1px;
}

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
    font-weight: 500;
}

.nav-links a {
    position: relative;
    padding: 4px 0;
    transition: color 0.3s ease;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #ff6b35;
    transition: width 0.3s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 22px;
    padding: 6px;
    border-radius: 50%;
    transition: background 0.3s ease;
    color: inherit;
    line-height: 1;
}

.theme-toggle:hover {
    background: rgba(255, 107, 53, 0.15);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 28px;
    cursor: pointer;
    color: inherit;
    padding: 4px;
    line-height: 1;
}

/* ===== Hero 区域 ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #0a0a0f 0%, #1a1a2e 40%, #16213e 100%);
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background:
        radial-gradient(circle at 30% 50%, rgba(255, 107, 53, 0.15), transparent 60%),
        radial-gradient(circle at 70% 30%, rgba(247, 147, 30, 0.1), transparent 50%);
    animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(-5%, -5%);
    }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    color: #fff;
}

.hero h1 {
    font-size: 58px;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fff, #ffd6b0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 36px;
    max-width: 550px;
}

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

.hero-badge {
    display: inline-block;
    background: rgba(255, 107, 53, 0.2);
    border: 1px solid rgba(255, 107, 53, 0.3);
    border-radius: 30px;
    padding: 6px 18px;
    font-size: 14px;
    color: #ff6b35;
    margin-bottom: 20px;
}

/* ===== Banner 轮播 ===== */
.banner-slider {
    position: relative;
    overflow: hidden;
    border-radius: 20px;
    margin-top: 40px;
    background: #0a0a0f;
    min-height: 300px;
}

.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    color: #fff;
    text-align: center;
}

.banner-slide.active {
    opacity: 1;
    position: relative;
}

.banner-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

.banner-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
}

.banner-dot.active {
    background: #ff6b35;
    transform: scale(1.2);
}

/* ===== About 区块 ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    font-size: 36px;
    margin-bottom: 16px;
}

.about-text p {
    color: #555;
    margin-bottom: 12px;
}

body.dark .about-text p {
    color: #bbb;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 40px;
    text-align: center;
}

.stat-item {
    padding: 20px;
}

.stat-number {
    font-size: 42px;
    font-weight: 900;
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: #888;
    margin-top: 6px;
    font-size: 15px;
}

/* ===== Value Proposition ===== */
.value-prop {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-top: 50px;
}

.vp-item {
    display: flex;
    gap: 16px;
}

.vp-icon {
    font-size: 32px;
    color: #ff6b35;
    flex-shrink: 0;
}

.vp-text h4 {
    font-size: 18px;
    margin-bottom: 6px;
}

.vp-text p {
    color: #666;
    font-size: 14px;
}

body.dark .vp-text p {
    color: #999;
}

/* ===== Timeline ===== */
.timeline {
    position: relative;
    padding-left: 40px;
    border-left: 3px solid #ff6b35;
    margin-top: 30px;
}

.timeline-item {
    position: relative;
    margin-bottom: 30px;
    padding-left: 20px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -47px;
    top: 6px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #ff6b35;
    border: 3px solid #fff;
}

body.dark .timeline-item::before {
    border-color: #0a0a0f;
}

.timeline-item h4 {
    font-size: 18px;
    margin-bottom: 4px;
}

.timeline-item p {
    color: #666;
    font-size: 14px;
}

body.dark .timeline-item p {
    color: #aaa;
}

/* ===== Team ===== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.team-card {
    text-align: center;
}

.team-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 0 auto 16px;
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    color: #fff;
    font-weight: 700;
}

/* ===== FAQ ===== */
.faq-item {
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    padding: 18px 0;
    cursor: pointer;
}

body.dark .faq-item {
    border-color: rgba(255, 255, 255, 0.08);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 17px;
}

.faq-question span {
    transition: transform 0.3s ease;
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    color: #666;
    padding-top: 0;
}

body.dark .faq-answer {
    color: #aaa;
}

.faq-item.open .faq-answer {
    max-height: 300px;
    padding-top: 12px;
}

/* ===== HowTo Steps ===== */
.howto-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 30px;
}

.howto-step {
    text-align: center;
    padding: 30px;
    border-radius: 20px;
    background: rgba(255, 107, 53, 0.05);
    border: 1px solid rgba(255, 107, 53, 0.1);
}

.howto-step .step-num {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 800;
    margin: 0 auto 16px;
}

/* ===== Contact ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
    color: #555;
}

body.dark .contact-info p {
    color: #bbb;
}

.contact-info strong {
    color: #1a1a2e;
}

body.dark .contact-info strong {
    color: #e0e0e0;
}

/* ===== Footer ===== */
.footer {
    background: #0a0a0f;
    color: #ccc;
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer h4 {
    color: #fff;
    font-size: 18px;
    margin-bottom: 16px;
}

.footer a {
    color: #aaa;
    display: block;
    margin-bottom: 8px;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: #ff6b35;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 14px;
}

.footer-bottom a {
    display: inline;
    margin: 0 8px;
}

/* ===== News Card ===== */
.news-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.news-card .date {
    font-size: 13px;
    color: #999;
}

.news-card h4 {
    font-size: 18px;
    font-weight: 600;
}

.news-card p {
    color: #666;
    font-size: 14px;
}

body.dark .news-card p {
    color: #aaa;
}

/* ===== Back to Top ===== */
.back-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    color: #fff;
    border: none;
    font-size: 24px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(255, 107, 53, 0.3);
}

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

/* ===== Search Modal ===== */
.search-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
}

.search-modal.open {
    display: flex;
}

.search-modal-inner {
    background: #fff;
    padding: 40px;
    border-radius: 20px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

body.dark .search-modal-inner {
    background: #1a1a2e;
}

.search-modal input {
    width: 100%;
    padding: 14px 20px;
    border-radius: 40px;
    border: 2px solid #ddd;
    font-size: 18px;
    outline: none;
    transition: border 0.3s ease;
    background: #fff;
    color: #1a1a2e;
}

body.dark .search-modal input {
    background: #2a2a3e;
    border-color: #444;
    color: #fff;
}

.search-modal input:focus {
    border-color: #ff6b35;
}

.search-modal .close-search {
    display: block;
    margin-top: 16px;
    text-align: center;
    color: #999;
    cursor: pointer;
    transition: color 0.3s ease;
}

.search-modal .close-search:hover {
    color: #ff6b35;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
    display: flex;
    gap: 8px;
    font-size: 14px;
    color: #999;
    padding: 20px 0;
    flex-wrap: wrap;
}

.breadcrumb a {
    color: #ff6b35;
}

.breadcrumb span {
    color: #666;
}

body.dark .breadcrumb span {
    color: #aaa;
}

/* ===== Solutions Grid ===== */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

/* ===== Partner Logos ===== */
.partner-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    padding: 20px 0;
}

.partner-logo {
    width: 120px;
    height: 60px;
    background: rgba(255, 107, 53, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: #ff6b35;
    font-size: 16px;
    border: 1px solid rgba(255, 107, 53, 0.15);
    transition: all 0.3s ease;
}

.partner-logo:hover {
    background: rgba(255, 107, 53, 0.2);
    transform: translateY(-2px);
}

/* ===== Testimonial Card ===== */
.testimonial-card {
    text-align: center;
    padding: 30px 20px;
}

.testimonial-card .avatar {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    margin: 0 auto 16px;
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: #fff;
}

.testimonial-card p {
    color: #666;
    font-style: italic;
    margin-bottom: 12px;
}

body.dark .testimonial-card p {
    color: #bbb;
}

.testimonial-card .name {
    font-weight: 700;
    color: #1a1a2e;
}

body.dark .testimonial-card .name {
    color: #e0e0e0;
}

.testimonial-card .role {
    font-size: 14px;
    color: #999;
}

/* ===== Friend Links ===== */
.friend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    padding: 20px 0;
}

.friend-links a {
    color: #999;
    font-size: 14px;
    padding: 4px 12px;
    border-radius: 20px;
    background: rgba(255, 107, 53, 0.05);
    transition: all 0.3s ease;
}

.friend-links a:hover {
    background: rgba(255, 107, 53, 0.15);
    color: #ff6b35;
}

/* ===== Disclaimer ===== */
.disclaimer {
    font-size: 13px;
    color: #888;
    line-height: 1.8;
    margin-top: 20px;
    padding: 20px;
    border-radius: 12px;
    background: rgba(0, 0, 0, 0.03);
}

body.dark .disclaimer {
    background: rgba(255, 255, 255, 0.03);
}

.disclaimer p {
    margin-bottom: 8px;
}

.disclaimer p:last-child {
    margin-bottom: 0;
}

/* ===== Sitemap Links ===== */
.sitemap-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 20px;
}

.sitemap-links a {
    color: #666;
    font-size: 14px;
    transition: color 0.3s ease;
}

body.dark .sitemap-links a {
    color: #aaa;
}

.sitemap-links a:hover {
    color: #ff6b35;
}

/* ===== Scroll Animation ===== */
.scroll-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-animate.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== App Showcase ===== */
.app-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    margin-top: 40px;
}

.app-features {
    list-style: none;
    padding: 0;
}

.app-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
    font-size: 16px;
}

.app-features li::before {
    content: '✓';
    color: #ff6b35;
    font-weight: 800;
    font-size: 20px;
}

/* ===== 响应式设计 ===== */

/* 平板 (≤1024px) */
@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .sitemap-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 手机 (≤768px) */
@media (max-width: 768px) {
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .section {
        padding: 50px 0;
    }

    .section-title {
        font-size: 28px;
    }

    .section-sub {
        font-size: 16px;
        margin-bottom: 32px;
    }

    /* 导航 */
    .nav-links {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    }

    body.dark .nav-links {
        background: rgba(10, 10, 15, 0.98);
    }

    .nav-links.open {
        display: flex;
    }

    .menu-toggle {
        display: block;
    }

    /* Hero */
    .hero h1 {
        font-size: 36px;
    }

    .hero p {
        font-size: 17px;
        margin-bottom: 28px;
    }

    .hero-btns {
        flex-direction: column;
        align-items: flex-start;
    }

    .hero-badge {
        font-size: 12px;
    }

    .banner-slider {
        min-height: 200px;
    }

    .banner-slide {
        padding: 20px;
    }

    .banner-slide h3 {
        font-size: 20px !important;
    }

    /* About */
    .about-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .about-text h2 {
        font-size: 28px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .stat-number {
        font-size: 32px;
    }

    /* Value Prop */
    .value-prop {
        grid-template-columns: 1fr;
        gap: 24px;
    }

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

    /* HowTo */
    .howto-steps {
        grid-template-columns: 1fr;
    }

    /* Contact */
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }

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

    /* Solutions */
    .solutions-grid {
        grid-template-columns: 1fr;
    }

    /* Sitemap */
    .sitemap-links {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    /* App Showcase */
    .app-showcase {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    /* Back Top */
    .back-top {
        width: 44px;
        height: 44px;
        font-size: 20px;
        bottom: 20px;
        right: 20px;
    }

    /* Search Button */
    #searchBtn {
        width: 44px !important;
        height: 44px !important;
        font-size: 18px !important;
        bottom: 80px !important;
        right: 20px !important;
    }

    /* Breadcrumb */
    .breadcrumb {
        font-size: 12px;
        padding: 12px 0;
    }

    /* FAQ */
    .faq-question {
        font-size: 15px;
    }

    /* Testimonial */
    .testimonial-card {
        padding: 20px 16px;
    }
}

/* 小手机 (≤480px) */
@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero h1 {
        font-size: 30px;
    }

    .hero p {
        font-size: 15px;
    }

    .section-title {
        font-size: 24px;
    }

    .stat-number {
        font-size: 28px;
    }

    .partner-logo {
        width: 100px;
        height: 50px;
        font-size: 14px;
    }

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

    .sitemap-links {
        grid-template-columns: 1fr 1fr;
    }
}

/* ===== 工具类 ===== */
.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mt-30 {
    margin-top: 30px;
}

.mt-40 {
    margin-top: 40px;
}

.mb-20 {
    margin-bottom: 20px;
}

/* ===== 暗色模式额外适配 ===== */
body.dark .hero {
    background: linear-gradient(135deg, #0a0a0f 0%, #1a1a2e 40%, #16213e 100%);
}

body.dark .card {
    background: rgba(255, 255, 255, 0.04);
}

body.dark .howto-step {
    background: rgba(255, 107, 53, 0.08);
    border-color: rgba(255, 107, 53, 0.15);
}

body.dark .partner-logo {
    background: rgba(255, 107, 53, 0.08);
    border-color: rgba(255, 107, 53, 0.2);
}

body.dark .friend-links a {
    background: rgba(255, 107, 53, 0.08);
}

body.dark .friend-links a:hover {
    background: rgba(255, 107, 53, 0.2);
}

/* ===== 打印样式 ===== */
@media print {
    .navbar,
    .back-top,
    #searchBtn,
    .search-modal {
        display: none !important;
    }

    .hero {
        min-height: auto;
        padding: 60px 0;
        background: #fff !important;
        color: #1a1a2e !important;
    }

    .hero h1 {
        -webkit-text-fill-color: #1a1a2e !important;
        color: #1a1a2e !important;
        background: none !important;
    }

    .hero p {
        color: #555 !important;
    }

    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }

    .section {
        padding: 40px 0;
        page-break-inside: avoid;
    }

    .scroll-animate {
        opacity: 1 !important;
        transform: none !important;
    }
}