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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

a {
    color: var(--accent-blue);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* ========== Navigation ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--nav-bg);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    height: 44px;
    border-bottom: 1px solid var(--nav-border);
}

.nav-container {
    max-width: 1024px;
    margin: 0 auto;
    padding: 0 22px;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 600;
    text-decoration: none;
    opacity: 0.9;
    transition: opacity 0.3s ease;
}

.nav-logo:hover {
    opacity: 1;
    color: var(--text-primary);
}

.logo-mark {
    font-size: 16px;
}

.logo-img {
    width: 18px;
    height: 18px;
    object-fit: contain;
    vertical-align: middle;
}

.auth-logo-img {
    width: 36px;
    height: 36px;
}

.logo-name {
    font-weight: 500;
    letter-spacing: -0.02em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 28px;
    align-items: center;
    flex: 1;
    justify-content: center;
}

.nav-link {
    color: var(--nav-text);
    text-decoration: none;
    font-size: 12px;
    font-weight: 400;
    opacity: 0.8;
    transition: opacity 0.3s ease;
    white-space: nowrap;
}

.nav-link:hover {
    opacity: 1;
    color: var(--text-primary);
}

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

.nav-join-btn {
    background: var(--accent-blue);
    color: #fff !important;
    padding: 6px 16px;
    border-radius: 980px;
    font-size: 12px;
    font-weight: 400;
    text-decoration: none;
    transition: all 0.3s ease;
}

.nav-join-btn:hover {
    background: var(--accent-blue-hover);
    color: #fff !important;
}

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
    position: relative;
    pointer-events: auto;
}

.hamburger span {
    width: 18px;
    height: 1.5px;
    background: var(--text-primary);
    border-radius: 1px;
    transition: all 0.3s ease;
    display: block;
}

.hamburger.active span:nth-child(1) {
    transform: translateY(5.5px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-5.5px) rotate(-45deg);
}

/* ========== Hero Announcement ========== */
.hero-announcement {
    margin-top: 44px;
    background: var(--bg-secondary);
    padding: 14px 22px;
    text-align: center;
}

.hero-announcement p {
    font-size: 14px;
    color: var(--text-secondary);
    max-width: 980px;
    margin: 0 auto;
}

.hero-announcement a {
    color: var(--accent-blue);
}

/* ========== Hero Section ========== */
.hero {
    background: var(--bg-primary);
    padding: 60px 22px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 980px;
    margin: 0 auto;
}

.hero-title {
    font-size: 56px;
    font-weight: 600;
    letter-spacing: -0.03em;
    line-height: 1.07;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.hero-headline {
    font-size: 28px;
    font-weight: 400;
    letter-spacing: 0.01em;
    line-height: 1.14;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.hero-subheadline {
    font-size: 21px;
    font-weight: 400;
    color: var(--text-tertiary);
    margin-bottom: 24px;
}

.hero-links {
    display: flex;
    gap: 22px;
    justify-content: center;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    font-size: 17px;
    font-weight: 400;
    padding: 12px 28px;
    border-radius: 980px;
    text-decoration: none;
    transition: all 0.3s ease;
    line-height: 1.17648;
    letter-spacing: -0.022em;
}

.btn-primary {
    background: var(--accent-blue);
    color: #fff;
}

.btn-primary:hover {
    background: var(--accent-blue-hover);
    color: #fff;
}

.btn-outline {
    background: transparent;
    color: var(--accent-blue);
    border: 1px solid var(--accent-blue);
    padding: 11px 28px;
}

.btn-outline:hover {
    background: var(--accent-blue);
    color: #fff;
}

.btn-large {
    font-size: 21px;
    padding: 14px 36px;
}

.hero-image-wrapper {
    max-width: 1000px;
    margin: 0 auto;
    overflow: hidden;
}

.hero-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 18px 18px 0 0;
}

/* ========== Link Blue ========== */
.link-blue {
    color: var(--accent-blue);
    font-size: 17px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.link-blue:hover {
    color: var(--accent-blue-hover);
}

/* ========== Product Section ========== */
.product-section {
    padding: 100px 22px;
    text-align: center;
}

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

.section-content {
    max-width: 980px;
    margin: 0 auto;
}

.section-title-large {
    font-size: 56px;
    font-weight: 600;
    letter-spacing: -0.03em;
    line-height: 1.07;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.section-subtitle {
    font-size: 24px;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 60px;
}

/* ========== Features Grid ========== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    text-align: left;
}

.feature-tile {
    background: var(--tile-bg);
    border-radius: 18px;
    padding: 36px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-tile:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.feature-icon-wrapper {
    font-size: 40px;
    margin-bottom: 20px;
    line-height: 1;
}

.feature-tile h3 {
    font-size: 24px;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.feature-tile p {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ========== Product Showcase ========== */
.product-showcase {
    padding: 12px;
    background: var(--bg-primary);
}

.showcase-grid {
    max-width: 980px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.showcase-card {
    border-radius: 18px;
    padding: 60px 40px;
    text-align: center;
    min-height: 500px;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.showcase-dark {
    background: var(--showcase-dark-bg);
    color: #fff;
}

.showcase-dark .showcard-title,
.showcase-dark .showcard-subtitle {
    color: #fff;
}

.showcase-dark .link-blue {
    color: #2997ff;
}

.showcase-dark .link-blue:hover {
    color: #147ce5;
}

.showcase-light {
    background: var(--showcase-light-bg);
}

.showcard-title {
    font-size: 40px;
    font-weight: 600;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.showcard-subtitle {
    font-size: 21px;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 18px;
}

.showcard-links {
    display: flex;
    gap: 24px;
    margin-bottom: 40px;
}

.showcard-visual {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

/* ========== Stats Row ========== */
.stats-row {
    display: flex;
    gap: 40px;
    justify-content: center;
    flex-wrap: wrap;
}

.stat-block {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 48px;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1;
    margin-bottom: 8px;
    color: inherit;
}

.stat-label {
    font-size: 17px;
    color: var(--text-tertiary);
    opacity: 0.7;
}

.showcase-dark .stat-label {
    color: rgba(255, 255, 255, 0.6);
}

/* ========== Mods Display ========== */
.mods-number-display {
    text-align: center;
}

.mods-big {
    display: block;
    font-size: 120px;
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1;
    background: var(--mods-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.mods-unit {
    display: block;
    font-size: 24px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-top: 10px;
}

/* ========== Updates Section ========== */
.section-updates {
    background: var(--bg-secondary);
}

.updates-list {
    max-width: 720px;
    margin: 0 auto;
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.update-card {
    background: var(--tile-bg);
    border-radius: 16px;
    padding: 28px 32px;
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.update-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}

.update-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--accent-blue);
    color: #fff;
    font-size: 12px;
    font-weight: 500;
    padding: 4px 10px;
    border-radius: 980px;
}

.update-date {
    font-size: 14px;
    color: var(--accent-blue);
    font-weight: 500;
    margin-bottom: 10px;
}

.update-card h3 {
    font-size: 22px;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.update-card p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.update-card a {
    color: var(--accent-blue);
}

/* ========== CTA Section ========== */
.cta-section {
    padding: 100px 22px;
    background: var(--bg-primary);
    text-align: center;
}

.cta-content {
    max-width: 980px;
    margin: 0 auto;
}

.cta-title {
    font-size: 56px;
    font-weight: 600;
    letter-spacing: -0.03em;
    line-height: 1.07;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.cta-subtitle {
    font-size: 24px;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 60px;
}

.cta-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 60px;
    text-align: left;
}

.step-item {
    background: var(--tile-bg);
    border-radius: 18px;
    padding: 36px 32px;
    position: relative;
}

.step-number {
    font-size: 14px;
    font-weight: 500;
    color: var(--accent-blue);
    margin-bottom: 16px;
    letter-spacing: 0.05em;
}

.step-item h3 {
    font-size: 24px;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.step-item p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.cta-links {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ========== FAQ Section ========== */
.faq-section {
    padding: 100px 22px;
    background: var(--bg-secondary);
}

.faq-content {
    max-width: 880px;
    margin: 0 auto;
    text-align: center;
}

.faq-list {
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: var(--tile-bg);
    border-radius: 14px;
    padding: 28px 32px;
    transition: all 0.3s ease;
}

.faq-item:hover {
    background: var(--tile-hover-bg);
}

.faq-item h3 {
    font-size: 19px;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.faq-item p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========== Support Section ========== */
.support-section {
    padding: 100px 22px;
    background: var(--bg-primary);
}

.support-content {
    max-width: 980px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.support-text h2 {
    font-size: 48px;
    font-weight: 600;
    letter-spacing: -0.03em;
    line-height: 1.1;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.support-text p {
    font-size: 21px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.5;
}

.support-links {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.support-qr {
    text-align: center;
}

.support-qr img {
    width: 280px;
    height: 280px;
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

/* ========== Footer ========== */
.footer {
    background: var(--footer-bg);
    color: var(--footer-text);
    padding: 20px 0 20px;
    font-size: 12px;
    line-height: 1.5;
}

.footer-container {
    max-width: 980px;
    margin: 0 auto;
    padding: 0 22px;
}

.footer-top p {
    font-size: 12px;
    color: var(--footer-text-secondary);
    line-height: 1.5;
}

.footer-top a {
    color: var(--accent-blue);
}

.footer-divider {
    height: 1px;
    background: var(--footer-border);
    margin: 16px 0;
}

.footer-columns {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    padding: 10px 0;
}

.footer-col h4 {
    font-size: 12px;
    font-weight: 600;
    color: var(--footer-text);
    margin-bottom: 12px;
}

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

.footer-col li {
    margin-bottom: 8px;
}

.footer-col a {
    color: var(--footer-text-secondary);
    text-decoration: none;
    font-size: 12px;
    transition: color 0.3s ease;
}

.footer-col a:hover {
    color: var(--footer-text);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    padding-top: 14px;
    border-top: 1px solid var(--footer-border);
    color: var(--footer-text-secondary);
    font-size: 12px;
}

/* ========== Animations ========== */

/* Hero entrance animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-8px);
    }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* Animation utility classes */
.animate-fade-in-up {
    animation: fadeInUp 0.8s cubic-bezier(0.2, 0.9, 0.3, 1) forwards;
    opacity: 0;
}

.animate-fade-in {
    animation: fadeIn 0.8s ease forwards;
    opacity: 0;
}

.animate-float {
    animation: float 4s ease-in-out infinite;
}

.animate-delay-1 { animation-delay: 0.15s; }
.animate-delay-2 { animation-delay: 0.3s; }
.animate-delay-3 { animation-delay: 0.45s; }
.animate-delay-4 { animation-delay: 0.6s; }
.animate-delay-5 { animation-delay: 0.75s; }
.animate-delay-6 { animation-delay: 0.9s; }

/* Hero elements animation */
.hero-title,
.hero-headline,
.hero-subheadline,
.hero-links {
    animation: fadeInUp 0.8s cubic-bezier(0.2, 0.9, 0.3, 1) forwards;
    opacity: 0;
}

.hero-headline { animation-delay: 0.1s; }
.hero-subheadline { animation-delay: 0.2s; }
.hero-links { animation-delay: 0.3s; }

.hero-image-wrapper {
    animation: fadeInUp 1s cubic-bezier(0.2, 0.9, 0.3, 1) forwards;
    opacity: 0;
    animation-delay: 0.4s;
}

/* Feature tiles staggered entrance on scroll */
.feature-tile {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s cubic-bezier(0.2, 0.9, 0.3, 1), transform 0.6s cubic-bezier(0.2, 0.9, 0.3, 1), box-shadow 0.3s ease;
}

.feature-tile.visible {
    opacity: 1;
    transform: translateY(0);
}

.feature-tile:nth-child(1) { transition-delay: 0s; }
.feature-tile:nth-child(2) { transition-delay: 0.08s; }
.feature-tile:nth-child(3) { transition-delay: 0.16s; }
.feature-tile:nth-child(4) { transition-delay: 0.24s; }
.feature-tile:nth-child(5) { transition-delay: 0.32s; }
.feature-tile:nth-child(6) { transition-delay: 0.4s; }

/* Showcase cards entrance */
.showcase-card {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s cubic-bezier(0.2, 0.9, 0.3, 1), transform 0.6s cubic-bezier(0.2, 0.9, 0.3, 1);
}

.showcase-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.showcase-card:nth-child(2) { transition-delay: 0.15s; }

/* Section titles entrance - 仅首页使用 */
.section-title-large.anim-fade-in,
.section-subtitle.anim-fade-in {
    animation: fadeInUp 0.6s cubic-bezier(0.2, 0.9, 0.3, 1) forwards;
    opacity: 0;
}

.section-subtitle.anim-fade-in {
    animation-delay: 0.1s;
}

/* Hero announcement entrance */
.hero-announcement {
    animation: fadeIn 0.5s ease forwards;
    opacity: 0;
}

/* Step items staggered entrance on scroll */
.step-item {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s cubic-bezier(0.2, 0.9, 0.3, 1), transform 0.6s cubic-bezier(0.2, 0.9, 0.3, 1);
}

.step-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.step-item:nth-child(1) { transition-delay: 0s; }
.step-item:nth-child(2) { transition-delay: 0.1s; }
.step-item:nth-child(3) { transition-delay: 0.2s; }

/* FAQ items staggered entrance on scroll */
.faq-item {
    opacity: 0;
    transform: translateY(15px);
    transition: opacity 0.5s cubic-bezier(0.2, 0.9, 0.3, 1), transform 0.5s cubic-bezier(0.2, 0.9, 0.3, 1), background 0.3s ease;
}

.faq-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.faq-item:nth-child(1) { transition-delay: 0s; }
.faq-item:nth-child(2) { transition-delay: 0.08s; }
.faq-item:nth-child(3) { transition-delay: 0.16s; }
.faq-item:nth-child(4) { transition-delay: 0.24s; }

/* Update cards staggered entrance on scroll */
.update-card {
    opacity: 0;
    transform: translateY(15px);
    transition: opacity 0.5s cubic-bezier(0.2, 0.9, 0.3, 1), transform 0.5s cubic-bezier(0.2, 0.9, 0.3, 1), box-shadow 0.3s ease;
}

.update-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.update-card:nth-child(1) { transition-delay: 0s; }
.update-card:nth-child(2) { transition-delay: 0.1s; }
.update-card:nth-child(3) { transition-delay: 0.2s; }
.update-card:nth-child(4) { transition-delay: 0.3s; }

/* CTA elements entrance on scroll */
.cta-title,
.cta-subtitle {
    opacity: 0;
    transform: translateY(15px);
    transition: opacity 0.6s cubic-bezier(0.2, 0.9, 0.3, 1), transform 0.6s cubic-bezier(0.2, 0.9, 0.3, 1);
}

.cta-title.visible,
.cta-subtitle.visible {
    opacity: 1;
    transform: translateY(0);
}

.cta-subtitle { transition-delay: 0.1s; }

/* CTA links entrance */
.cta-links {
    opacity: 0;
    transform: translateY(15px);
    transition: opacity 0.6s cubic-bezier(0.2, 0.9, 0.3, 1) 0.2s, transform 0.6s cubic-bezier(0.2, 0.9, 0.3, 1) 0.2s;
}

.cta-links.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stats row entrance */
.stats-row,
.mods-number-display {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.6s cubic-bezier(0.2, 0.9, 0.3, 1), transform 0.6s cubic-bezier(0.2, 0.9, 0.3, 1);
}

.showcase-card.visible .stats-row,
.showcase-card.visible .mods-number-display {
    opacity: 1;
    transform: scale(1);
}

/* Button hover scale effect */
.btn:hover {
    transform: scale(1.02);
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary, .btn-outline {
    transition: all 0.3s ease, transform 0.2s cubic-bezier(0.2, 0.9, 0.3, 1);
}

/* Navigation link underline animation */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--text-primary);
    transition: width 0.3s cubic-bezier(0.2, 0.9, 0.3, 1);
}

.nav-link:hover::after {
    width: 100%;
}

/* Card hover lift enhancement */
.feature-tile {
    transition: opacity 0.6s cubic-bezier(0.2, 0.9, 0.3, 1), transform 0.6s cubic-bezier(0.2, 0.9, 0.3, 1), box-shadow 0.3s ease;
}

.feature-tile:hover {
    transform: translateY(-6px);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.1);
}

/* ========== Responsive ========== */
@media (max-width: 833px) {
    .nav-menu {
        display: none;
        position: fixed;
        top: 44px;
        left: 0;
        right: 0;
        background: rgba(251, 251, 253, 0.95);
        backdrop-filter: saturate(180%) blur(30px);
        -webkit-backdrop-filter: saturate(180%) blur(30px);
        flex-direction: column;
        gap: 0;
        padding: 12px 0;
        border-bottom: 1px solid var(--nav-border);
        z-index: 999;
    }

    .nav-menu.active {
        display: flex;
        animation: slideDown 0.3s ease;
    }

    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .nav-menu li {
        width: 100%;
        list-style: none;
    }

    .nav-menu .nav-link {
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 16px 22px;
        font-size: 17px;
        font-weight: 500;
        opacity: 1;
        color: var(--text-primary);
        border-bottom: 1px solid var(--nav-border);
        text-align: center;
        transition: background 0.2s ease;
    }

    .nav-menu .nav-link:active {
        background: var(--bg-secondary);
    }

    .nav-menu li:last-child .nav-link {
        border-bottom: none;
    }

    .hamburger {
        display: flex;
    }

    .nav-actions {
        display: none;
    }

    .hero-title {
        font-size: 40px;
    }

    .hero-headline {
        font-size: 21px;
    }

    .hero-subheadline {
        font-size: 17px;
    }

    .section-title-large {
        font-size: 40px;
    }

    .section-subtitle {
        font-size: 19px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

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

    .showcase-card {
        min-height: 400px;
        padding: 40px 28px;
    }

    .showcard-title {
        font-size: 32px;
    }

    .mods-big {
        font-size: 80px;
    }

    .cta-title {
        font-size: 40px;
    }

    .cta-steps {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .support-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .support-text h2 {
        font-size: 36px;
    }

    .support-links {
        justify-content: center;
    }

    .footer-columns {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (max-width: 480px) {
    .hero-title {
        font-size: 32px;
    }

    .hero-headline {
        font-size: 19px;
    }

    .section-title-large {
        font-size: 32px;
    }

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

    .cta-title {
        font-size: 32px;
    }

    .stats-row {
        gap: 24px;
    }

    .stat-number {
        font-size: 36px;
    }

    .mods-big {
        font-size: 64px;
    }

    .btn {
        font-size: 15px;
        padding: 10px 22px;
    }

    .btn-large {
        font-size: 17px;
        padding: 12px 28px;
    }
}

/* ====== 世界和平板块 ====== */
.peace-section {
    position: relative;
    background: #0a0a0f url('peace_photo.jpg') center center / cover no-repeat;
    background-attachment: fixed;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.peace-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0.45) 50%, rgba(0,0,0,0.75) 100%);
    z-index: 1;
}

.peace-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 1000px;
    width: 100%;
    padding: 40px 32px;
}

.peace-title {
    font-size: 52px;
    font-weight: 800;
    background: linear-gradient(135deg, #fff 30%, rgba(255,255,255,0.7));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
    letter-spacing: 0.08em;
}

.peace-subtitle {
    font-size: 18px;
    color: rgba(255,255,255,0.7);
    line-height: 1.7;
    margin-bottom: 40px;
}

.peace-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.peace-btn {
    display: inline-block;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
}

.peace-btn-primary {
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.25);
    color: #fff;
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
}

.peace-btn-primary:hover {
    background: rgba(255,255,255,0.25);
    border-color: rgba(255,255,255,0.4);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255,255,255,0.1);
}

.peace-btn-secondary {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.12);
    color: rgba(255,255,255,0.85);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
}

.peace-btn-secondary:hover {
    background: rgba(255,255,255,0.12);
    border-color: rgba(255,255,255,0.25);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255,255,255,0.06);
}

@media (max-width: 640px) {
    .peace-title {
        font-size: 34px;
    }
    .peace-subtitle {
        font-size: 16px;
        margin-bottom: 32px;
    }
    .peace-content {
        padding: 40px 20px;
    }
    .peace-btn {
        width: 100%;
        text-align: center;
        padding: 13px 24px;
    }
    .peace-buttons {
        flex-direction: column;
    }
    .peace-section {
        background-attachment: scroll;
        min-height: 100vh;
    }
}