/* style.css */
:root {
    --bg-primary: #fdfdfd;
    --bg-secondary: #ffffff;
    --text-primary: #1e2530;
    --text-secondary: #5a6578;
    --text-muted: #8e9cae;
    --accent: #FF5733; /* Coral Red matching Y of Yeardx */
    --accent-hover: #E64A19;
    --accent-light: rgba(255, 87, 51, 0.06);
    --accent-border: rgba(255, 87, 51, 0.15);
    --primary-gray: #5a6578;
    --primary-gray-light: #f5f7fa;
    --primary-gray-dark: #2c3545;
    --border-color: rgba(230, 235, 245, 0.9);
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(255, 87, 51, 0.08);
    --shadow-sm: 0 4px 12px rgba(255, 87, 51, 0.02);
    --shadow-md: 0 12px 30px -5px rgba(255, 87, 51, 0.06), 0 8px 16px -8px rgba(255, 87, 51, 0.04);
    --shadow-lg: 0 30px 60px -15px rgba(255, 87, 51, 0.08);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 28px;
    --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    text-decoration: none !important; /* 全局禁止任何文字出现下划线 */
}

html {
    scroll-behavior: smooth;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    position: relative;
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-primary);
    letter-spacing: -0.03em;
}

p {
    line-height: 1.65;
    color: var(--text-secondary);
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

/* Header & Navigation */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 38px;
    height: 38px;
    object-fit: contain;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
}

.logo-text {
    font-size: 1.35rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--text-primary), var(--primary-gray-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-secondary);
    position: relative;
    padding: 0.25rem 0;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent);
    transition: var(--transition);
}

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

.nav-btn {
    background: linear-gradient(135deg, var(--primary-gray-dark), var(--primary-gray));
    color: #ffffff !important;
    padding: 0.65rem 1.35rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-sm);
}

.nav-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    margin: 5px 0;
    transition: var(--transition);
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    color: #ffffff;
    padding: 0.95rem 2.25rem;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 1.05rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    box-shadow: 0 4px 15px rgba(255, 87, 51, 0.2);
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 25px rgba(255, 87, 51, 0.35);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 0.95rem 2.25rem;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 1.05rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
}

.btn-secondary:hover {
    background: var(--primary-gray-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Layout container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    width: 100%;
}

.section-padding {
    padding: 7rem 0;
}

.badge {
    background: var(--primary-gray-light);
    color: var(--text-secondary);
    padding: 0.45rem 1.1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent);
    border-radius: 50%;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.9); opacity: 0.6; }
    50% { transform: scale(1.2); opacity: 1; }
    100% { transform: scale(0.9); opacity: 0.6; }
}

.section-title {
    font-size: 2.75rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 1.25rem;
    letter-spacing: -0.03em;
}

.section-desc {
    font-size: 1.15rem;
    color: var(--text-secondary);
    text-align: center;
    max-width: 750px;
    margin: 0 auto 5rem auto;
}

/* Non-homogenous layout components */

/* 1. Asymmetrical Split Hero */
.hero-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 4.5rem;
    align-items: center;
    padding-top: 9.5rem;
    padding-bottom: 6.5rem;
    position: relative;
    z-index: 1;
}

/* Background Decorative Elements matching 1.png-3.png */
.hero-sec-wrapper {
    position: relative;
    overflow: hidden;
}
.hero-deco-ring-1 {
    position: absolute;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    border: 35px solid rgba(255, 87, 51, 0.05);
    top: -50px;
    right: -100px;
    z-index: 0;
    pointer-events: none;
}
.hero-deco-ring-2 {
    position: absolute;
    width: 340px;
    height: 340px;
    border-radius: 50%;
    border: 4px solid rgba(255, 87, 51, 0.06);
    bottom: -100px;
    left: -120px;
    z-index: 0;
    pointer-events: none;
}
.hero-deco-dots-1 {
    position: absolute;
    width: 100px;
    height: 150px;
    background-image: radial-gradient(var(--accent) 3px, transparent 3px);
    background-size: 20px 20px;
    opacity: 0.25;
    top: 15%;
    left: 2%;
    z-index: 0;
    pointer-events: none;
}
.hero-deco-dots-2 {
    position: absolute;
    width: 150px;
    height: 100px;
    background-image: radial-gradient(var(--accent) 3px, transparent 3px);
    background-size: 20px 20px;
    opacity: 0.25;
    bottom: 20%;
    right: 2%;
    z-index: 0;
    pointer-events: none;
}
.hero-deco-circle-pink {
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 87, 51, 0.06) 0%, transparent 75%);
    top: 30%;
    left: 45%;
    z-index: 0;
    pointer-events: none;
}

/* Reusable Background Decorations */
.deco-wrapper {
    position: relative;
    overflow: hidden;
}

.deco-ring-left {
    position: absolute;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    border: 30px solid rgba(255, 87, 51, 0.04);
    bottom: -80px;
    left: -100px;
    z-index: 0;
    pointer-events: none;
}

.deco-ring-right {
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    border: 4px solid rgba(255, 87, 51, 0.05);
    top: -100px;
    right: -80px;
    z-index: 0;
    pointer-events: none;
}

.deco-dots-left {
    position: absolute;
    width: 80px;
    height: 120px;
    background-image: radial-gradient(var(--accent) 3px, transparent 3px);
    background-size: 20px 20px;
    opacity: 0.18;
    top: 10%;
    left: 3%;
    z-index: 0;
    pointer-events: none;
}

.deco-dots-right {
    position: absolute;
    width: 100px;
    height: 80px;
    background-image: radial-gradient(var(--accent) 3px, transparent 3px);
    background-size: 20px 20px;
    opacity: 0.18;
    bottom: 15%;
    right: 3%;
    z-index: 0;
    pointer-events: none;
}

.deco-glow {
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 87, 51, 0.04) 0%, transparent 70%);
    z-index: 0;
    pointer-events: none;
}


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

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
}

/* Multi-layered Mockup */
.mockup-container {
    position: relative;
    width: 100%;
    max-width: 440px;
}

.mockup-layer-1 {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 1.5rem;
    position: relative;
    z-index: 2;
}

.mockup-layer-2 {
    background: var(--primary-gray-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    position: absolute;
    width: 100%;
    height: 100%;
    top: 20px;
    left: 20px;
    z-index: 1;
    opacity: 0.8;
}

/* 2. Interactive Search Hub Console */
.console-wrapper {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    margin-top: 2rem;
}

.console-nav {
    display: flex;
    background: var(--primary-gray-light);
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
}

.console-tab {
    padding: 1.1rem 2rem;
    font-weight: 700;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    border-right: 1px solid var(--border-color);
    white-space: nowrap;
}

.console-tab:hover {
    background: var(--accent-light);
    color: var(--accent);
}

.console-tab.active {
    background: var(--bg-secondary);
    color: var(--accent);
    border-bottom: 3px solid var(--accent);
}

.console-body {
    padding: 3rem;
    min-height: 280px;
}

/* 3. Alternating Showcase Layout */
.showcase-container {
    display: flex;
    flex-direction: column;
    gap: 8rem;
}

.showcase-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}

.showcase-row:nth-child(even) {
    direction: rtl;
}

.showcase-row:nth-child(even) .showcase-text {
    direction: ltr;
}

.showcase-number {
    font-size: 9rem;
    font-weight: 900;
    line-height: 0.8;
    color: rgba(255, 87, 51, 0.06);
    margin-bottom: -1rem;
    user-select: none;
    font-family: Arial, sans-serif;
}

.showcase-text h3 {
    font-size: 2rem;
    margin-bottom: 1.25rem;
}

.showcase-text p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

.showcase-visual {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.showcase-visual::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 6px;
    height: 100%;
    background: var(--accent);
}

/* 4. Asymmetrical Milestone Track */
.milestone-track {
    position: relative;
    padding-left: 3rem;
    max-width: 900px;
    margin: 0 auto;
}

.milestone-track::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent), var(--border-color));
}

.milestone-node {
    position: relative;
    margin-bottom: 4rem;
}

.milestone-node:last-child {
    margin-bottom: 0;
}

.milestone-dot-large {
    position: absolute;
    left: -3rem;
    top: 4px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 4px solid var(--accent);
    box-shadow: 0 0 0 6px var(--bg-primary), 0 0 10px rgba(255, 87, 51, 0.3);
}

.milestone-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.milestone-card:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.milestone-year {
    font-size: 1rem;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

/* 5. Double Column Changelog Matrix */
.changelog-matrix {
    display: grid;
    grid-template-columns: 0.85fr 1.15fr;
    gap: 3rem;
    align-items: start;
    max-width: 950px;
    margin: 0 auto;
}

.changelog-menu {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.changelog-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.changelog-card:hover, .changelog-card.active {
    border-color: var(--accent);
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.changelog-card.active::before {
    content: '';
    position: absolute;
    left: -1px;
    top: 20%;
    bottom: 20%;
    width: 4px;
    background: var(--accent);
    border-radius: 0 4px 4px 0;
}

.changelog-detail {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 3rem;
    box-shadow: var(--shadow-sm);
    min-height: 320px;
    transition: var(--transition);
}

/* Subpage layout */
.subpage-container {
    max-width: 1200px;
    margin: 9rem auto 6rem auto;
    padding: 0 1.5rem;
}

.subpage-header {
    text-align: center;
    margin-bottom: 4rem;
}

.subpage-content {
    padding: 1rem 0;
}

.subpage-content h2 {
    font-size: 1.85rem;
    margin: 2.75rem 0 1.25rem 0;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.subpage-content h2:first-of-type {
    margin-top: 0;
}

.subpage-content h3 {
    font-size: 1.35rem;
    margin: 1.75rem 0 0.85rem 0;
}

.subpage-content p {
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
    line-height: 1.7;
}

.subpage-content ul, .subpage-content ol {
    margin-bottom: 1.75rem;
    padding-left: 1.75rem;
    color: var(--text-secondary);
}

.subpage-content li {
    margin-bottom: 0.65rem;
    font-size: 1.05rem;
}

/* Modal for Legal Documents */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.active {
    display: flex;
    opacity: 1;
}

.modal-container {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 650px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    position: relative;
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.modal.active .modal-container {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
}

.modal-close:hover {
    color: var(--text-primary);
}

/* Footer */
footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 4.5rem 0 2.5rem 0;
    margin-top: auto;
}

/* Centered Footer Layout */
.footer-centered-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    margin-bottom: 3rem;
}

.footer-logo-centered {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer-desc-centered {
    color: var(--text-muted);
    font-size: 0.95rem;
    max-width: 480px;
    line-height: 1.6;
    margin: 0 auto 1.75rem auto;
}

.footer-nav-centered {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
}

.footer-nav-centered a {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 600;
    transition: var(--transition);
}

.footer-nav-centered a:hover {
    color: var(--accent);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.copyright {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.beian-link {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

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

/* Responsiveness */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
        padding-top: 4.75rem !important; /* 将移动端/平板端顶距减少一半，避免首屏空旷 */
        padding-bottom: 3.5rem !important;
    }
    .hero-text {
        align-items: center;
    }
    .showcase-row {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .showcase-row:nth-child(even) {
        direction: ltr;
    }
    .changelog-matrix {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    header {
        z-index: 1001 !important; /* 提升顶部导航栏层级，确保其在侧拉遮罩层(z-index: 998)上方，防止汉堡按钮被遮挡导致点击无响应 */
    }
    .console-wrapper {
        position: relative;
    }
    .console-wrapper::after {
        content: '';
        position: absolute;
        top: 0;
        right: 0;
        height: 52px; /* 精确覆盖 Tab 导航条的高度 */
        width: 50px;
        background: linear-gradient(to right, rgba(245, 247, 250, 0), var(--primary-gray-light) 85%);
        pointer-events: none;
        z-index: 3;
    }
    .mobile-toggle {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 5px;
        width: 44px;
        height: 44px;
        position: relative;
        z-index: 1005 !important;
        background: transparent !important;
        border: none !important;
        cursor: pointer !important;
        pointer-events: auto !important;
    }
    .mobile-toggle span {
        margin: 0 !important;
    }
    /* 汉堡按钮变成 'X' 动画 */
    .mobile-toggle.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    .mobile-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    .mobile-toggle.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }
    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        width: 280px;
        height: 100vh;
        background: var(--bg-secondary);
        border-left: 1px solid var(--border-color);
        flex-direction: column;
        justify-content: flex-start;
        padding: 6.5rem 2rem 2rem 2rem; /* 顶距拉开以避开顶部栏按钮 */
        gap: 1.75rem;
        transform: translateX(100%);
        visibility: hidden; /* 未激活时完全对浏览器隐藏，彻底防范各类点击与滑动干扰 */
        pointer-events: none;
        transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.4s ease;
        box-shadow: -8px 0 25px rgba(15, 23, 42, 0.08);
        z-index: 999;
    }
    .nav-links.active {
        transform: translateX(0);
        visibility: visible;
        pointer-events: all;
    }
    .showcase-number {
        font-size: 6rem;
    }
    .subpage-content {
        padding: 2rem 0; /* 移除移动端子内容区域的左右内边距（外层 subpage-container 已自带 1.5rem 边距），避免双重挤压导致卡片宽度过窄 */
    }
    }

/* Hero Static Image Wrapper */
.hero-image-wrapper {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    max-width: 420px;
    margin: 0 auto;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    background: #ffffff;
    line-height: 0;
}

.hero-image-wrapper img {
    width: 100%;
    height: auto;
    display: block;
    pointer-events: none;
    -webkit-user-drag: none;
    user-select: none;
    -webkit-touch-callout: none;
}

.hero-image-wrapper:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px -10px rgba(255, 87, 51, 0.2);
}

/* Premium Promo Image Carousel Wrapper */
.carousel-container {
    position: relative;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    max-width: 420px;
    margin: 0 auto;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    background: #ffffff;
    line-height: 0;
}

.carousel-track {
    display: flex;
    transition: transform 0.65s cubic-bezier(0.25, 1, 0.5, 1);
}

.carousel-slide {
    min-width: 100%;
    position: relative;
}

.carousel-slide img {
    width: 100%;
    height: auto;
    display: block;
}

.carousel-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 20;
}

.carousel-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 87, 51, 0.25);
    cursor: pointer;
    transition: var(--transition);
}

.carousel-dot.active {
    background: var(--accent);
    width: 22px;
    border-radius: 5px;
}

.carousel-container:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px -10px rgba(255, 87, 51, 0.2);
}

/* Premium Promo Poster Card Wrapper */
.promo-img-wrapper {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    max-width: 420px;
    margin: 0 auto;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}
.promo-img-wrapper img {
    width: 100%;
    height: auto;
    display: block;
    pointer-events: none;
    -webkit-user-drag: none;
    user-select: none;
    -webkit-touch-callout: none;
}
.promo-img-wrapper:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px -10px rgba(255, 87, 51, 0.15);
}

/* Footer CTA Full Area Redesign */
.footer-cta-grid {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 4.5rem;
    align-items: center;
}

.footer-cta-logo-area {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.footer-cta-logo-shine {
    position: absolute;
    width: 220px;
    height: 220px;
    background: radial-gradient(circle, rgba(255, 87, 51, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
    pointer-events: none;
    animation: ctaGlowPulse 4s infinite alternate;
}

@keyframes ctaGlowPulse {
    0% { transform: scale(0.95); opacity: 0.8; }
    100% { transform: scale(1.1); opacity: 1; }
}

.footer-cta-logo {
    width: 140px;
    height: 140px;
    object-fit: contain;
    border-radius: 32px;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 87, 51, 0.12);
    position: relative;
    z-index: 1;
    transition: var(--transition);
    animation: ctaFloat 6s ease-in-out infinite;
}

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

.footer-cta-logo:hover {
    transform: translateY(-8px) scale(1.06) rotate(3deg);
    box-shadow: 0 20px 45px -10px rgba(255, 87, 51, 0.25);
}

.footer-cta-content-area {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

@media (max-width: 1024px) {
    .footer-cta-grid {
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .footer-cta-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
        text-align: center;
    }
    
    .footer-cta-logo {
        width: 110px;
        height: 110px;
    }
    
    .footer-cta-content-area {
        align-items: center;
    }
    
    .footer-cta-content-area h2 {
        text-align: center !important;
    }
    
    .footer-cta-content-area p {
        text-align: center;
    }
    
    .footer-cta-content-area div {
        justify-content: center;
        text-align: center;
    }
}

/* Features Subpage Redesign Styles */
.features-showcase-grid {
    display: flex;
    flex-direction: column;
    gap: 6.5rem;
    margin-top: 2rem;
}

.feature-detail-row {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 5rem;
    align-items: center;
}

.feature-detail-row.reverse {
    grid-template-columns: 0.9fr 1.1fr;
}

.feature-detail-row.reverse .feature-detail-text {
    grid-column: 2;
}

.feature-detail-row.reverse .feature-detail-visual {
    grid-column: 1;
    grid-row: 1;
}

.feature-num-badge {
    font-size: 1.1rem;
    font-weight: 850;
    color: var(--accent);
    background: var(--accent-light);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    display: inline-block;
    margin-bottom: 1rem;
    border: 1px solid var(--accent-border);
}

.feature-detail-text h2 {
    font-size: 2rem;
    margin-bottom: 1.25rem;
    text-align: left;
}

.feature-detail-text p {
    font-size: 1.05rem;
    line-height: 1.75;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    text-align: left;
}

.feature-detail-bullets {
    list-style: none;
    padding-left: 0;
    margin-bottom: 0;
    text-align: left;
}

.feature-detail-bullets li {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
}

.feature-detail-bullets li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 800;
}

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

/* Engine Selection Mockup Card */
.engine-preview-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    width: 100%;
    max-width: 340px;
    padding: 1.5rem;
}

.engine-preview-header {
    font-size: 0.85rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
    text-align: left;
}

.engine-preview-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--text-secondary);
    border: 1px solid transparent;
    transition: var(--transition);
}

.engine-preview-item span {
    font-weight: 900;
    color: var(--accent);
    margin-right: 0.5rem;
}

.engine-preview-item.active {
    background: var(--accent-light);
    color: var(--accent);
    border-color: var(--accent-border);
}

.engine-preview-status {
    font-size: 0.75rem;
    font-weight: 800;
    background: var(--accent);
    color: #ffffff;
    padding: 0.15rem 0.45rem;
    border-radius: 4px;
}

/* Pure Ad-free Mockup Card */
.pure-preview-card {
    background: linear-gradient(135deg, var(--bg-secondary), var(--primary-gray-light));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    width: 100%;
    max-width: 340px;
    padding: 2.5rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.pure-preview-banner {
    position: relative;
    z-index: 1;
}

.pure-preview-badge {
    background: linear-gradient(135deg, #2ecc71, #27ae60);
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 800;
    padding: 0.35rem 1rem;
    border-radius: 50px;
    display: inline-block;
    box-shadow: 0 4px 10px rgba(46, 204, 113, 0.2);
}

/* Responsive Adaptive Mockup Card */
.layout-preview-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    width: 100%;
    max-width: 340px;
    padding: 1.5rem;
}

.layout-preview-browser {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 1rem;
    background: var(--primary-gray-light);
}

.layout-preview-line {
    height: 8px;
    background: var(--text-muted);
    border-radius: 4px;
    margin-bottom: 0.75rem;
    opacity: 0.2;
}

.layout-preview-line.long {
    width: 90%;
}

.layout-preview-line.short {
    width: 60%;
}

.layout-preview-image {
    height: 100px;
    background: var(--accent-light);
    border: 1px dashed var(--accent-border);
    border-radius: var(--radius-sm);
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--accent);
    font-weight: 800;
    font-size: 0.85rem;
}

/* Performance metrics */
.metric-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 1rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.metric-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-border);
}

.metric-num {
    font-size: 1.4rem;
    font-weight: 900;
    color: var(--accent);
}

.metric-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 600;
    margin-top: 0.25rem;
}

@media (max-width: 900px) {
    .feature-detail-row, .feature-detail-row.reverse {
        grid-template-columns: 1fr !important;
        gap: 2.5rem;
    }
    
    .feature-detail-row.reverse .feature-detail-text {
        grid-column: 1 !important;
    }

    .feature-detail-row.reverse .feature-detail-visual {
        grid-column: 1 !important;
        grid-row: auto !important;
    }
    
    .feature-detail-visual {
        margin: 0 auto;
    }
    
    .feature-detail-text h2 {
        text-align: center !important;
    }
    
    .feature-detail-text p {
        text-align: left !important;
    }
    
    .feature-detail-bullets {
        text-align: left !important;
        align-self: flex-start;
    }
    
    .feature-detail-text {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .feature-detail-bullets li {
        text-align: left;
    }
}

/* Guide Page Redesign Styles */
.guide-step-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 2rem 1.5rem;
    margin-top: 2rem;
    margin-bottom: 4rem;
}

.guide-step-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2rem 1.5rem 1.5rem 1.5rem;
    position: relative;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.guide-step-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-border);
}

.guide-step-num {
    position: absolute;
    top: -17px;
    left: 20px;
    width: 34px;
    height: 34px;
    background: var(--accent);
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 850;
    box-shadow: 0 4px 10px rgba(255, 87, 51, 0.25);
    font-size: 0.95rem;
}

.guide-step-title {
    font-size: 1.05rem;
    font-weight: 800;
    margin-top: 0.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    text-align: left;
}

.guide-step-desc {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-secondary);
    text-align: left;
}

/* Double column panels for bookmarks and privacy */
.guide-panel-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    margin-bottom: 4rem;
}

.guide-panel-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-sm);
    text-align: left;
}

.guide-panel-card h3 {
    font-size: 1.5rem;
    margin-top: 0;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}

.guide-panel-card ul, .guide-panel-card ol {
    padding-left: 1.25rem;
    margin-bottom: 0;
    color: var(--text-secondary);
}

.guide-panel-card li {
    font-size: 0.95rem;
    line-height: 1.65;
    margin-bottom: 0.75rem;
}

/* Troubleshooting block */
.guide-trouble-card {
    background: var(--primary-gray-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    margin-bottom: 4rem;
    position: relative;
    overflow: hidden;
    text-align: left;
}

.guide-trouble-card h3 {
    font-size: 1.5rem;
    margin-top: 0;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

@media (max-width: 768px) {
    .guide-panel-row {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

/* Version Page Premium Grid Dashboard Styles */
.latest-version-hero {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 3.5rem;
    align-items: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3.5rem;
    box-shadow: var(--shadow-md);
    margin: 3rem 0 5rem 0;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.latest-version-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 6px;
    height: 100%;
    background: var(--accent);
}

.latest-version-hero:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-border);
}

.latest-hero-logo-container {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    width: 140px;
    height: 140px;
}

.latest-hero-logo {
    width: 120px;
    height: 120px;
    object-fit: contain;
    border-radius: 28px;
    border: 1px solid var(--border-color);
    z-index: 2;
    transition: var(--transition);
}

.latest-hero-logo:hover {
    transform: scale(1.05) rotate(2deg);
}

.latest-hero-logo-glow {
    position: absolute;
    width: 180px;
    height: 180px;
    background: radial-gradient(circle, rgba(255, 87, 51, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 1;
    animation: latestGlowPulse 4s infinite alternate;
}

@keyframes latestGlowPulse {
    0% { transform: scale(0.9); opacity: 0.7; }
    100% { transform: scale(1.1); opacity: 1; }
}

.latest-hero-content {
    text-align: left;
}

.latest-hero-header {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.latest-hero-version {
    font-size: 2.2rem;
    font-weight: 950;
    color: var(--text-primary);
    font-family: var(--font-mono), monospace;
}

.latest-hero-title {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0;
}

.latest-hero-details {
    list-style: none;
    padding-left: 0;
    margin-bottom: 0;
}

.latest-hero-details li {
    font-size: 1.02rem;
    line-height: 1.7;
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.5rem;
}

.latest-hero-details li::before {
    content: '✦';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 900;
}

.latest-hero-details li strong {
    color: var(--text-primary);
}

.latest-hero-details li:last-child {
    margin-bottom: 0;
}

.latest-hero-download-action {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.85rem;
    min-width: 180px;
}

/* History Cards Grid Layout */
.history-versions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
    gap: 2.5rem;
    margin-bottom: 5rem;
}

.history-version-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.25rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    text-align: left;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 400px;
}

.history-version-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-border);
}

.history-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1.25rem;
}

.history-card-header-left {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.history-card-version {
    font-size: 1.75rem;
    font-weight: 900;
    color: var(--text-primary);
    font-family: var(--font-mono), monospace;
    line-height: 1;
}

.history-card-date {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 650;
}

.history-card-logo-container {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    background: #ffffff;
    line-height: 0;
}

.history-card-logo {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.history-card-body {
    flex-grow: 1;
    margin-bottom: 2rem;
}

.history-card-title {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.history-card-list {
    list-style: none;
    padding-left: 0;
    margin-bottom: 0;
}

.history-card-list li {
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 0.65rem;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.25rem;
}

.history-card-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-size: 1.2rem;
    line-height: 1;
}

.history-card-list li strong {
    color: var(--text-primary);
}

.history-card-list li:last-child {
    margin-bottom: 0;
}

.history-card-download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    font-size: 0.9rem;
    font-weight: 800;
    color: var(--accent);
    background: var(--accent-light);
    border: 1px solid var(--accent-border);
    padding: 0.85rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.history-card-download-btn:hover {
    background: var(--accent);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(255, 87, 51, 0.25);
}

@media (max-width: 1024px) {
    .latest-version-hero {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
        padding: 1.75rem 1.25rem !important; /* 大幅减少移动端卡片内边距，拓宽文本横向阅读空间 */
        margin: 2rem 0 !important;
    }
    .latest-hero-logo-container {
        margin: 0 auto;
    }
    .latest-hero-content {
        text-align: center;
    }
    .latest-hero-header {
        justify-content: center;
    }
    .latest-hero-details li {
        text-align: left;
    }
    .history-version-card {
        padding: 1.5rem !important; /* 同步缩减历史版本卡片的内边距，提升阅读舒适度 */
        min-height: auto !important; /* 避免移动端强制过高产生空白 */
    }
}

/* Security Page Bento Grid Styles */
.security-bento-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: minmax(240px, auto);
    gap: 2.25rem;
    margin: 4rem 0;
}

.bento-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    text-align: left;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.bento-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-border);
}

.bento-card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.bento-card-header svg {
    color: var(--accent);
    flex-shrink: 0;
}

.bento-card-header h3 {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0 !important;
}

.bento-card-body p {
    font-size: 0.98rem;
    line-height: 1.65;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.bento-card-list {
    list-style: none;
    padding-left: 0 !important;
    margin-bottom: 0 !important;
}

.bento-card-list li {
    font-size: 0.92rem;
    line-height: 1.6;
    margin-bottom: 0.65rem;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.25rem;
}

.bento-card-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 900;
}

/* Specific Bento Cards Spans */
.bento-sandbox {
    grid-column: span 2;
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 2.5rem;
}

.bento-incognito {
    grid-column: span 1;
    grid-row: span 2;
    background: linear-gradient(135deg, var(--bg-secondary), rgba(255, 87, 51, 0.02));
    border-color: rgba(255, 87, 51, 0.12);
}

.bento-incognito .bento-card-header svg {
    filter: drop-shadow(0 0 8px rgba(255, 87, 51, 0.25));
}

.bento-wakeup {
    grid-column: span 1;
}

.bento-malware {
    grid-column: span 1;
}

/* Bento Visual Elements */
.bento-visual-sandbox {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--primary-gray-light);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    height: 100%;
    justify-content: center;
}

.sandbox-app-mock {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.6rem 0.8rem;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-sm);
}

.sandbox-divider {
    height: 1px;
    background: var(--border-color);
    position: relative;
    margin: 0.5rem 0;
}

.sandbox-divider::after {
    content: 'Secure Sandbox Shield';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--accent);
    color: #ffffff;
    font-size: 0.65rem;
    font-weight: 800;
    padding: 0.15rem 0.45rem;
    border-radius: 50px;
    white-space: nowrap;
}

.wakeup-mock-alert {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem;
    box-shadow: var(--shadow-md);
    text-align: center;
    margin-top: 1rem;
}

.wakeup-mock-title {
    font-size: 0.85rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.4rem;
}

.wakeup-mock-desc {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.wakeup-mock-btns {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
}

.wakeup-btn {
    font-size: 0.7rem;
    font-weight: 800;
    padding: 0.35rem 0.75rem;
    border-radius: 4px;
    cursor: pointer;
}

.wakeup-btn.deny {
    background: var(--accent);
    color: #ffffff;
    border: none;
}

.wakeup-btn.allow {
    background: var(--primary-gray-light);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.threat-detector-mock {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1rem;
}

.threat-item {
    background: var(--primary-gray-light);
    border-radius: 6px;
    padding: 0.5rem 0.75rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    border: 1px solid var(--border-color);
}

.threat-status {
    font-weight: 800;
    color: #2ecc71;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

@media (max-width: 1024px) {
    .security-bento-grid {
        grid-template-columns: 1fr;
        grid-auto-rows: auto;
    }
    .bento-sandbox {
        grid-column: span 1;
        grid-template-columns: 1fr;
    }
    .bento-incognito {
        grid-column: span 1;
        grid-row: span 1;
    }
    .bento-wakeup, .bento-malware {
        grid-column: span 1;
    }
}

/* About Page Styles */
.about-story-section {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 4.5rem;
    align-items: center;
    margin-bottom: 5rem;
}

.about-stats-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem 2.5rem;
    box-shadow: var(--shadow-sm);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    position: relative;
    overflow: hidden;
}

.about-stat-item {
    text-align: center;
}

.about-stat-number {
    font-size: 3rem;
    font-weight: 950;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 0.5rem;
    font-family: var(--font-mono), monospace;
}

.about-stat-label {
    font-size: 0.9rem;
    font-weight: 750;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.about-stat-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.about-values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.25rem;
    margin: 2.5rem 0 5rem 0;
}

.value-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    text-align: left;
}

.value-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-border);
}

.value-card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--accent-light);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.value-card h3 {
    font-size: 1.25rem;
    font-weight: 850;
    margin-top: 0;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.value-card p {
    font-size: 0.95rem;
    line-height: 1.65;
    color: var(--text-secondary);
    margin-bottom: 0;
}

.about-contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    margin: 2.5rem 0 5rem 0;
}

.contact-card, .join-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 380px;
    transition: var(--transition);
    text-align: left;
}

.contact-card:hover, .join-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-border);
}

.card-header-with-badge {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.card-title-text {
    font-size: 1.4rem;
    font-weight: 900;
    color: var(--text-primary);
    margin: 0;
}

.interactive-mock-box {
    background: var(--primary-gray-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin: 1.5rem 0;
    text-align: left;
}

@media (max-width: 1024px) {
    .about-story-section {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .about-values-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .about-contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

/* Mobile Features Carousel Styles */
@media (max-width: 768px) {
    .mobile-carousel-wrapper {
        display: flex !important;
        flex-direction: row !important;
        justify-content: flex-start !important; /* 修复 flex 容器 overflow 时 justify-content: center 导致左侧内容被截断且无法左滑的 Bug */
        overflow-x: auto !important;
        scroll-snap-type: x mandatory !important;
        scroll-behavior: smooth;
        gap: 1.5rem !important;
        padding: 1rem 7.5% !important; /* 左右边距增加 7.5%，使得首尾卡片在 scroll-snap 时也能居中对齐 */
        margin-top: 2rem !important;
        scrollbar-width: none; /* Firefox */
    }
    
    .mobile-carousel-wrapper::-webkit-scrollbar {
        display: none; /* Safari and Chrome */
    }
    
    .mobile-carousel-wrapper .carousel-card {
        min-width: 85% !important;
        max-width: 85% !important;
        scroll-snap-align: center !important;
        margin: 0 auto;
    }
    
    .carousel-indicators {
        display: flex !important;
        justify-content: center;
        gap: 8px;
        margin-top: 1.5rem;
    }
}

/* Hide indicators on desktop */
.carousel-indicators {
    display: none;
}

.carousel-dot-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 87, 51, 0.25);
    cursor: pointer;
    transition: var(--transition);
}

.carousel-dot-indicator.active {
    background: var(--accent);
    width: 22px;
    border-radius: 5px;
}

/* 性能优化：非首屏区域延迟渲染，提升冷启动载入速度 */
.deco-wrapper, .milestone-track, .footer-centered-content {
    content-visibility: auto;
    contain-intrinsic-size: 1px 400px;
}

/* Floating Download Button */
.floating-download-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 996;
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    color: #ffffff !important;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.5rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.95rem;
    box-shadow: 0 8px 25px rgba(255, 87, 51, 0.35);
    transition: var(--transition);
    animation: floatUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.floating-download-btn:hover {
    transform: translateY(-4px) scale(1.03);
    box-shadow: 0 12px 30px rgba(255, 87, 51, 0.45);
}

@keyframes floatUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@media (max-width: 768px) {
    .floating-download-btn {
        bottom: 25px;
        right: 20px;
        padding: 0.75rem 1.25rem;
        font-size: 0.9rem;
        box-shadow: 0 6px 20px rgba(255, 87, 51, 0.3);
    }
    .card-header-with-badge {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
}