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

:root {
    /* 独特的橙红暖色调配色 */
    --primary-color: #ff6b35;
    --primary-dark: #e85d2a;
    --primary-light: #ff8c5f;
    --secondary-color: #f7931e;
    --secondary-dark: #db7f14;
    --accent-color: #ffc947;
    --accent-dark: #e6b03d;

    /* 对比文字颜色 */
    --text-dark: #2d1b11;
    --text-medium: #5a3826;
    --text-light: #8b6f47;
    --text-lighter: #b39873;

    /* 中性背景色 */
    --bg-primary: #fefcf8;
    --bg-secondary: #fff8f0;
    --bg-tertiary: #ffe8d6;
    --bg-dark: #1a0f08;

    /* 简单的单色渐变 */
    --gradient-primary: linear-gradient(90deg, #ff6b35 0%, #f7931e 100%);
    --gradient-secondary: linear-gradient(180deg, #ffc947 0%, #ff6b35 100%);
    --gradient-overlay: linear-gradient(45deg, rgba(255,107,53,0.9) 0%, rgba(247,147,30,0.9) 100%);

    /* 扁平化阴影 */
    --shadow-flat: 0 2px 0 rgba(45, 27, 17, 0.1);
    --shadow-sm: 2px 2px 0 rgba(45, 27, 17, 0.15);
    --shadow: 4px 4px 0 rgba(45, 27, 17, 0.2);
    --shadow-md: 6px 6px 0 rgba(45, 27, 17, 0.25);
    --shadow-lg: 8px 8px 0 rgba(45, 27, 17, 0.3);

    /* 快速过渡 */
    --transition: all 0.2s ease-out;
    --transition-slow: all 0.35s ease-in-out;

    /* 最小化圆角 */
    --radius-none: 0;
    --radius-sm: 2px;
    --radius: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
}

body {
    font-family: 'Arial', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    line-height: 1.5;
    color: var(--text-dark);
    background: var(--bg-secondary);
    overflow-x: hidden;
    font-weight: 400;
    letter-spacing: 0.3px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 3rem;
}

/* ============================================
   Header & Navigation - 扁平几何风格
============================================ */
.header-main {
    background: var(--bg-primary);
    box-shadow: 0 4px 0 var(--primary-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 3px solid var(--text-dark);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 3rem;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 0;
    min-height: 85px;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    position: relative;
    border: 3px solid var(--text-dark);
    padding: 0.5rem 1.25rem;
    background: var(--primary-color);
    transform: skewX(-5deg);
}

.logo-section::after {
    display: none;
}

.logo-img {
    width: 55px;
    height: 55px;
    object-fit: contain;
    transform: skewX(5deg);
    filter: contrast(1.2) brightness(1.1);
}

.logo-text {
    font-size: 1.1rem;
    font-weight: 900;
    color: var(--bg-primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    transform: skewX(5deg);
}

.mobile-menu-btn {
    display: none;
    background: var(--primary-color);
    border: 3px solid var(--text-dark);
    font-size: 1.5rem;
    color: var(--bg-primary);
    cursor: pointer;
    padding: 0.5rem;
    transition: var(--transition);
}

.mobile-menu-btn:hover {
    background: var(--secondary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0.25rem;
}

.nav-menu li a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 700;
    font-size: 0.9rem;
    padding: 0.65rem 1.5rem;
    transition: var(--transition);
    display: block;
    position: relative;
    border: 2px solid transparent;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-menu li a::before {
    display: none;
}

.nav-menu li a:hover {
    color: var(--bg-primary);
    background: var(--primary-color);
    border-color: var(--text-dark);
    transform: translateY(-2px);
}

/* ============================================
   Hero Section - 几何图形背景
============================================ */
.hero-section {
    background: var(--primary-color);
    padding: 4rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    border-bottom: 5px solid var(--text-dark);
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(45deg, var(--secondary-color) 25%, transparent 25%),
        linear-gradient(-45deg, var(--secondary-color) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, var(--secondary-color) 75%),
        linear-gradient(-45deg, transparent 75%, var(--secondary-color) 75%);
    background-size: 80px 80px;
    background-position: 0 0, 0 40px, 40px -40px, -40px 0px;
    opacity: 0.15;
}

.main-title {
    font-size: 2.75rem;
    font-weight: 900;
    color: var(--bg-primary);
    margin: 0;
    position: relative;
    z-index: 1;
    letter-spacing: -1px;
    text-transform: uppercase;
    text-shadow: 4px 4px 0 rgba(45, 27, 17, 0.3);
}

/* ============================================
   Slider Section - 扁平卡片
============================================ */
.slider-section {
    position: relative;
    width: 100%;
    padding: 3.5rem 3rem;
    background: var(--bg-secondary);
}

.slider-container {
    position: relative;
    width: 100%;
    max-width: 1400px;
    height: 480px;
    margin: 0 auto;
    overflow: hidden;
    border: 5px solid var(--text-dark);
    box-shadow: var(--shadow-lg);
}

.slider-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 3rem;
    padding: 0 4rem;
}

.slide:nth-child(1) {
    background: linear-gradient(90deg, #ff6b35 0%, #f7931e 100%);
}

.slide:nth-child(2) {
    background: linear-gradient(90deg, #ffc947 0%, #ff6b35 100%);
}

.slide:nth-child(3) {
    background: linear-gradient(90deg, #f7931e 0%, #ffc947 100%);
}

.slide:nth-child(4) {
    background: linear-gradient(90deg, #ff8c5f 0%, #ff6b35 100%);
}

.slide.active {
    opacity: 1;
    z-index: 1;
}

.slide-bg {
    position: relative;
    width: 50%;
    height: 90%;
    object-fit: contain;
    object-position: center;
    border: 4px solid var(--text-dark);
    box-shadow: var(--shadow-md);
    background: white;
    padding: 1rem;
    transition: none;
}

.slide.active .slide-bg {
    animation: none;
}

.slide-overlay {
    display: none;
}

.slide-content {
    position: relative;
    z-index: 2;
    text-align: left;
    color: white;
    width: 45%;
    padding: 0;
}

.slide.active .slide-content {
    animation: none;
}

.slide-title {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 1rem;
    line-height: 1.1;
    letter-spacing: -1px;
    text-transform: uppercase;
    text-shadow: 3px 3px 0 rgba(45, 27, 17, 0.4);
}

.slide-title i {
    margin-right: 0.75rem;
    color: var(--accent-color);
    filter: none;
}

.slide-desc {
    font-size: 1.15rem;
    margin-bottom: 1.75rem;
    line-height: 1.6;
    opacity: 1;
    text-shadow: 2px 2px 0 rgba(45, 27, 17, 0.3);
}

.btn-slide {
    padding: 0.9rem 2.25rem;
    font-size: 1rem;
    font-weight: 900;
    border: 3px solid var(--text-dark);
    background: var(--accent-color);
    color: var(--text-dark);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow);
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.btn-slide:hover {
    background: var(--bg-primary);
    color: var(--primary-color);
    transform: translate(2px, 2px);
    box-shadow: var(--shadow-sm);
}

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 55px;
    height: 55px;
    background: var(--bg-primary);
    border: 4px solid var(--text-dark);
    color: var(--text-dark);
    font-size: 1.4rem;
    cursor: pointer;
    z-index: 3;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.slider-btn:hover {
    background: var(--accent-color);
    transform: translateY(-50%) scale(1.05);
}

.slider-btn.prev {
    left: 1.5rem;
}

.slider-btn.next {
    right: 1.5rem;
}

.slider-dots {
    position: absolute;
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.5rem;
    z-index: 3;
}

.dot {
    width: 16px;
    height: 16px;
    background: rgba(254, 252, 248, 0.5);
    border: 3px solid var(--text-dark);
    cursor: pointer;
    transition: var(--transition);
}

.dot:hover {
    transform: scale(1.15);
    background: rgba(254, 252, 248, 0.75);
}

.dot.active {
    background: var(--accent-color);
    transform: scale(1.25);
}

/* ============================================
   Section Styles - 粗体标题
============================================ */
.section-title {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
    font-weight: 900;
    text-align: center;
    letter-spacing: -1px;
    color: var(--text-dark);
    text-transform: uppercase;
}

.section-title i {
    margin-right: 0.75rem;
    color: var(--primary-color);
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-medium);
    margin-bottom: 2.5rem;
    text-align: center;
    max-width: 750px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 500;
}

/* ============================================
   Categories Section - 方形卡片
============================================ */
.categories-section {
    padding: 5rem 3rem;
    background: var(--bg-primary);
    border-top: 4px solid var(--primary-color);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2.5rem;
}

.category-card {
    background: var(--bg-secondary);
    padding: 2rem 1.5rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
    border: 4px solid var(--text-dark);
    cursor: pointer;
    position: relative;
    overflow: visible;
}

.category-card::before {
    display: none;
}

.category-card:hover {
    transform: translate(2px, 2px);
    box-shadow: var(--shadow-sm);
    border-color: var(--primary-color);
    background: var(--bg-tertiary);
}

.category-card:hover .category-download {
    opacity: 1;
    transform: translateY(0);
}

.category-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    transition: var(--transition);
}

.category-card:hover .category-icon {
    transform: scale(1.1);
    color: var(--secondary-color);
}

.category-card h3 {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.category-count {
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

.category-download {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-dark);
    font-weight: 900;
    font-size: 0.85rem;
    opacity: 0;
    transform: translateY(8px);
    transition: var(--transition);
    padding: 0.6rem 1.25rem;
    background: var(--accent-color);
    border: 3px solid var(--text-dark);
    margin-top: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.category-download i {
    font-size: 0.75rem;
}

/* ============================================
   Featured Works Section - 网格布局
============================================ */
.featured-works-section {
    padding: 5rem 3rem;
    background: var(--bg-secondary);
    border-top: 4px solid var(--secondary-color);
}

.featured-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 1.5rem;
    margin-top: 2.5rem;
}

.featured-card {
    background: var(--bg-primary);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    border: 4px solid var(--text-dark);
}

.featured-card::before {
    display: none;
}

.featured-card:hover {
    transform: translate(2px, 2px);
    box-shadow: var(--shadow-sm);
}

.featured-card:hover .featured-download {
    opacity: 1;
    transform: translateY(0);
}

.featured-card img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    display: block;
    transition: var(--transition);
    border-bottom: 3px solid var(--text-dark);
}

.featured-card:hover img {
    transform: scale(1.02);
    filter: contrast(1.1);
}

.featured-info {
    padding: 1.5rem;
    position: relative;
    z-index: 2;
}

.featured-info h3 {
    font-size: 1.3rem;
    margin-bottom: 0.4rem;
    color: var(--text-dark);
    font-weight: 900;
    text-transform: uppercase;
}

.featured-info p {
    color: var(--text-medium);
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
    line-height: 1.5;
}

.featured-download {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-dark);
    font-weight: 900;
    font-size: 0.85rem;
    opacity: 0;
    transform: translateY(8px);
    transition: var(--transition);
    padding: 0.6rem 1.25rem;
    background: var(--primary-color);
    border: 3px solid var(--text-dark);
    text-transform: uppercase;
}

.featured-download i {
    font-size: 0.75rem;
}

/* ============================================
   Membership Section - 线框风格
============================================ */
.membership-section {
    padding: 5rem 3rem;
    background: var(--bg-primary);
    border-top: 4px solid var(--accent-color);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
    gap: 1.5rem;
    margin-top: 2.5rem;
}

.benefit-card {
    background: var(--bg-secondary);
    padding: 2rem 1.5rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
    border: 4px solid var(--text-dark);
}

.benefit-card:hover {
    transform: translate(2px, 2px);
    box-shadow: var(--shadow-sm);
    border-color: var(--secondary-color);
    background: var(--bg-tertiary);
}

.benefit-icon {
    width: 90px;
    height: 90px;
    margin: 0 auto 1.25rem;
    background: var(--primary-color);
    border: 4px solid var(--text-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.benefit-card:hover .benefit-icon {
    transform: scale(1.05);
    background: var(--secondary-color);
}

.benefit-icon i {
    font-size: 2.25rem;
    color: var(--bg-primary);
}

.benefit-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-weight: 900;
    text-transform: uppercase;
}

.benefit-card p {
    color: var(--text-medium);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* ============================================
   Community Section - 对比色块
============================================ */
.community-section {
    padding: 5rem 3rem;
    background: var(--text-dark);
    text-align: center;
    position: relative;
    overflow: hidden;
    border-top: 5px solid var(--primary-color);
    border-bottom: 5px solid var(--primary-color);
}

.community-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 35px,
            rgba(255, 107, 53, 0.05) 35px,
            rgba(255, 107, 53, 0.05) 70px
        );
}

.community-section .section-title,
.community-section .section-desc {
    color: var(--bg-primary);
    position: relative;
    z-index: 1;
}

.community-section .section-title i {
    color: var(--accent-color);
}

.btn-primary {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 900;
    border: 4px solid var(--bg-primary);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow);
    background: var(--primary-color);
    color: var(--bg-primary);
    margin-bottom: 2.5rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    position: relative;
    z-index: 1;
}

.btn-primary:hover {
    background: var(--accent-color);
    color: var(--text-dark);
    transform: translate(2px, 2px);
    box-shadow: var(--shadow-sm);
}

.community-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-top: 2.5rem;
    position: relative;
    z-index: 1;
}

.feature-item {
    padding: 1.75rem 1.25rem;
    background: var(--bg-secondary);
    border: 4px solid var(--primary-color);
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.feature-item:hover {
    background: var(--bg-tertiary);
    transform: translate(2px, 2px);
    box-shadow: var(--shadow-sm);
    border-color: var(--accent-color);
}

.feature-item i {
    font-size: 2.75rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature-item h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-weight: 900;
    text-transform: uppercase;
}

.feature-item p {
    color: var(--text-medium);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* ============================================
   FAQ Section - 简洁手风琴
============================================ */
.faq-section {
    padding: 5rem 3rem;
    background: var(--bg-secondary);
    border-top: 4px solid var(--primary-color);
}

.faq-list {
    max-width: 950px;
    margin: 2.5rem auto 0;
}

.faq-item {
    background: var(--bg-primary);
    margin-bottom: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 4px solid var(--text-dark);
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--primary-color);
}

.faq-item.active {
    border-color: var(--secondary-color);
}

.faq-question {
    padding: 1.5rem 1.75rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: var(--transition);
    background: var(--bg-primary);
}

.faq-question:hover {
    background: var(--bg-tertiary);
}

.faq-icon {
    color: var(--primary-color);
    transition: var(--transition);
    font-size: 1.2rem;
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
    color: var(--secondary-color);
}

.faq-question h3 {
    font-size: 1.05rem;
    font-weight: 900;
    color: var(--text-dark);
    line-height: 1.5;
    text-transform: none;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer p {
    padding: 0 1.75rem 1.5rem 3.5rem;
    color: var(--text-medium);
    line-height: 1.8;
    font-size: 0.95rem;
}

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

/* ============================================
   Footer - 深色块状
============================================ */
.footer-main {
    background: var(--text-dark);
    color: var(--bg-primary);
    padding: 3.5rem 3rem 1.75rem;
    position: relative;
    overflow: hidden;
    border-top: 6px solid var(--primary-color);
}

.footer-main::before {
    display: none;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2.5rem;
    margin-bottom: 2.5rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.footer-logo img {
    width: 50px;
    height: 50px;
    object-fit: contain;
    filter: brightness(1.2);
}

.footer-logo span {
    font-size: 1.3rem;
    font-weight: 900;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-tagline {
    color: var(--text-lighter);
    font-size: 0.95rem;
}

.footer-col h4 {
    font-size: 1.2rem;
    margin-bottom: 1.25rem;
    font-weight: 900;
    color: var(--accent-color);
    text-transform: uppercase;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 0.65rem;
}

.footer-col ul li a {
    color: var(--bg-secondary);
    text-decoration: none;
    transition: var(--transition);
    display: inline-block;
    font-size: 0.9rem;
    font-weight: 500;
}

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

.social-links {
    display: flex;
    gap: 0.75rem;
}

.social-links a {
    width: 45px;
    height: 45px;
    background: var(--primary-color);
    border: 3px solid var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-primary);
    transition: var(--transition);
    text-decoration: none;
    font-size: 1.2rem;
}

.social-links a:hover {
    background: var(--accent-color);
    color: var(--text-dark);
    transform: translate(1px, 1px);
}

.footer-bottom {
    text-align: center;
    padding-top: 1.75rem;
    border-top: 3px solid rgba(255, 255, 255, 0.2);
    margin-top: 2rem;
    color: var(--text-lighter);
    font-size: 0.9rem;
}

/* ============================================
   Back to Top Button - 方形按钮
============================================ */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 55px;
    height: 55px;
    background: var(--primary-color);
    color: var(--bg-primary);
    border: 4px solid var(--text-dark);
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    z-index: 999;
    font-size: 1.4rem;
}

.back-to-top:hover {
    background: var(--accent-color);
    color: var(--text-dark);
    transform: translate(2px, 2px);
    box-shadow: var(--shadow-sm);
}

.back-to-top.show {
    display: flex;
}

/* ============================================
   Responsive Design
============================================ */
@media (max-width: 1024px) {
    .container {
        padding: 0 2rem;
    }

    .slide {
        padding: 0 2.5rem;
        gap: 2rem;
    }

    .slide-title {
        font-size: 2rem;
    }

    .slide-desc {
        font-size: 1rem;
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 85px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 85px);
        background: var(--bg-primary);
        border-right: 4px solid var(--text-dark);
        flex-direction: column;
        padding: 1.5rem;
        gap: 0;
        transition: var(--transition-slow);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        width: 100%;
        border-bottom: 2px solid var(--bg-tertiary);
    }

    .nav-menu li a {
        padding: 1rem;
        width: 100%;
    }

    .main-title {
        font-size: 1.75rem;
    }

    .hero-section {
        padding: 3rem 0;
    }

    .slider-container {
        height: 560px;
    }

    .slide {
        flex-direction: column;
        padding: 1.75rem 1.25rem;
        gap: 1.25rem;
    }

    .slide-bg {
        width: 100%;
        height: 48%;
    }

    .slide-content {
        width: 100%;
        text-align: center;
    }

    .slide-title {
        font-size: 1.5rem;
    }

    .slide-desc {
        font-size: 0.95rem;
    }

    .btn-slide {
        padding: 0.75rem 1.75rem;
        font-size: 0.95rem;
    }

    .slider-btn {
        width: 48px;
        height: 48px;
        font-size: 1.2rem;
    }

    .slider-btn.prev {
        left: 1rem;
    }

    .slider-btn.next {
        right: 1rem;
    }

    .slider-dots {
        bottom: 1.25rem;
    }

    .dot {
        width: 14px;
        height: 14px;
    }

    .section-title {
        font-size: 1.85rem;
    }

    .section-desc {
        font-size: 1rem;
    }

    .featured-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .categories-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

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

    .community-features {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .back-to-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .container,
    .nav-container {
        padding: 0 1rem;
    }

    .logo-text {
        font-size: 0.85rem;
    }

    .logo-img {
        width: 45px;
        height: 45px;
    }

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

    .slider-container {
        height: 520px;
    }

    .slide {
        padding: 1.5rem 1rem;
    }

    .slide-title {
        font-size: 1.3rem;
    }

    .slide-desc {
        font-size: 0.875rem;
    }

    .section-title {
        font-size: 1.65rem;
    }

    .btn-primary {
        padding: 0.875rem 2rem;
        font-size: 1rem;
    }
}

.protocol-news-section{box-sizing:border-box;width:100%;max-width:1180px;margin:42px auto;padding:0 22px}.protocol-news-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}.protocol-news-card{padding:22px;border-radius:14px;background:rgba(255,255,255,.94);color:#263443;box-shadow:0 8px 24px rgba(0,0,0,.12)}.protocol-news-card a,.protocol-news-more{color:#2563a8}.protocol-news-card time{display:block;opacity:.7;margin:10px 0}.protocol-news-page{box-sizing:border-box;width:100%;max-width:1180px;margin:0 auto;padding:110px 22px 60px}.protocol-news-page h1{text-align:center;margin:0 0 32px}.protocol-detail{box-sizing:border-box;max-width:900px;margin:0 auto;padding:30px;border-radius:14px;background:rgba(255,255,255,.96);color:#263443}.protocol-detail time{display:block;opacity:.72;margin:12px 0 22px}.protocol-detail-content{line-height:1.9;white-space:pre-wrap;overflow-wrap:anywhere}.protocol-back{display:inline-block;margin-top:24px}.Agent17-topHead-77d60f{width:100%}.protocol-news-shell{width:100%!important}.managed-download-overlay{position:fixed;inset:0;z-index:10000;background:rgba(0,0,0,.76);display:grid;place-items:center;padding:20px}.managed-download-dialog{width:min(100%,500px);padding:28px;border-radius:14px;background:#171b28;color:#fff;box-sizing:border-box}.managed-download-dialog footer{display:flex;justify-content:flex-end;gap:12px;margin-top:20px}.managed-download-dialog button{padding:10px 18px;cursor:pointer}@media(max-width:700px){.protocol-news-page{padding:90px 14px 40px}.protocol-detail{padding:20px}.protocol-news-grid{grid-template-columns:1fr}.managed-download-dialog{padding:22px}}

.protocol-news-more{display:inline-block;margin:20px 0;padding:10px 18px;border-radius:8px;text-decoration:none}
a[data-seo-managed="download-link"]{display:inline-block;color:inherit;text-decoration:none}
.protocol-table-download{display:block;color:inherit;text-decoration:none}
.protocol-news-card{overflow-wrap:anywhere}
.protocol-news-card h2,.protocol-news-card h3{overflow-wrap:anywhere}

.protocol-dark-site .protocol-news-section,.protocol-dark-site .protocol-news-page{background:transparent;color:var(--text-light,#e5faff)}
.protocol-dark-site .protocol-news-card,.protocol-dark-site .protocol-detail{background:rgba(10,14,26,.94);color:var(--text-light,#e5faff);border:1px solid rgba(34,211,238,.22);box-shadow:0 8px 24px rgba(0,0,0,.3)}
.protocol-dark-site .protocol-news-card h2,.protocol-dark-site .protocol-news-card h3,.protocol-dark-site .protocol-news-page>h1{color:var(--primary-cyan,#22d3ee)}
.protocol-dark-site .protocol-news-card p,.protocol-dark-site .protocol-news-card time{color:var(--text-gray,#a6b4c3)}
.protocol-dark-site .protocol-news-card a,.protocol-dark-site .protocol-news-more,.protocol-dark-site .protocol-back{color:var(--primary-cyan,#22d3ee)}