/* ============================================
   囤了啥 - 软件下载介绍页样式
   ============================================ */

/* CSS 变量 */
:root {
    --color-primary: #FFA502;
    --color-primary-light: #FFD6A8;
    --color-primary-dark: #E89F5A;
    --color-primary-bg: #FFF5E6;
    --color-text: #1A1A2E;
    --color-text-secondary: #666666;
    --color-text-tertiary: #999999;
    --color-border: #F0F0F0;
    --color-white: #FFFFFF;
    --color-dark-bg: #1A1A2E;
    --color-success: #10B981;
    --color-warn: #FF9500;
    --color-info: #3B82F6;
    --color-purple: #8B5CF6;
    --color-bg-gray: #F8F9FA;
    --color-bg-light-orange: #FFF8F0;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.08);
    --shadow-orange: 0 4px 20px rgba(255, 165, 2, 0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

/* 重置 */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "WenQuanYi Micro Hei", sans-serif;
    color: var(--color-text);
    background: var(--color-primary-bg);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

@media (min-width: 1440px) {
    .container {
        max-width: 1280px;
    }
}

/* 滚动进度条 */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    z-index: 10000;
    width: 0%;
    transition: width 0.1s linear;
}

/* ============================================
   导航栏
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 9999;
    padding: 16px 0;
    transition: all var(--transition-normal);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    padding: 12px 0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 16px;  /* 增大 logo 与文字的间距 */
    text-decoration: none;
    color: var(--color-text);
}

.logo-icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

.logo-icon svg {
    width: 100%;
    height: 100%;
}

.logo-text {
    font-size: 26px;  /* 增大字体 */
    font-weight: 700;
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 36px;
}

.nav-links a {
    text-decoration: none;
    color: var(--color-text-secondary);
    font-size: 15px;
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-normal);
    border-radius: 1px;
}

.nav-links a:hover {
    color: var(--color-primary);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2.5px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   按钮
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 100px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.btn-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    box-shadow: 0 4px 16px rgba(255, 165, 2, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(255, 165, 2, 0.45);
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-text);
    border: 2px solid var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

.btn-large {
    padding: 16px 40px;
    font-size: 17px;
}

.btn-pulse {
    position: relative;
}

.btn-pulse::before {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 100px;
    background: var(--color-primary);
    opacity: 0.3;
    animation: pulse-ring 2s ease-out infinite;
    z-index: -1;
}

@keyframes pulse-ring {
    0% {
        transform: scale(1);
        opacity: 0.3;
    }
    100% {
        transform: scale(1.15);
        opacity: 0;
    }
}

/* ============================================
   区块通用样式
   ============================================ */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--color-primary-bg);
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.section-title {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.2;
}

.section-desc {
    font-size: 18px;
    color: var(--color-text-secondary);
    max-width: 500px;
    margin: 0 auto;
}

/* ============================================
   Hero 首屏
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
    background: linear-gradient(180deg, #FFFFFF 0%, #FFF8F0 100%);
}

/* 背景插画层：固定在手机左侧 */
.hero-illustration {
    position: absolute;
    right: 45%;  /* 在手机左侧，根据手机位置调整 */
    top: 50%;
    transform: translateY(-50%);
    width: 500px;  /* 根据实际图片调整 */
    height: 600px;
    background: url('../images/hero-illustration.png') no-repeat center center / contain;
    pointer-events: none;
    z-index: 0;
}

.floating-shapes {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.05;
}

.shape-1 {
    width: 400px;
    height: 400px;
    top: -100px;
    right: -100px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    animation: float 8s ease-in-out infinite;
}

.shape-2 {
    width: 300px;
    height: 300px;
    bottom: 10%;
    left: -80px;
    background: linear-gradient(135deg, var(--color-info) 0%, #93C5FD 100%);
    animation: float 10s ease-in-out infinite 1s;
}

.shape-3 {
    width: 200px;
    height: 200px;
    top: 40%;
    right: 15%;
    background: linear-gradient(135deg, var(--color-purple) 0%, #C4B5FD 100%);
    animation: float 7s ease-in-out infinite 0.5s;
}

.shape-4 {
    width: 150px;
    height: 150px;
    bottom: 20%;
    right: 30%;
    background: linear-gradient(135deg, var(--color-success) 0%, #6EE7B7 100%);
    animation: float 9s ease-in-out infinite 2s;
}

.shape-5 {
    width: 100px;
    height: 100px;
    top: 20%;
    left: 10%;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, #FEF3C7 100%);
    animation: float 6s ease-in-out infinite 1.5s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) scale(1);
    }
    50% {
        transform: translateY(-30px) scale(1.05);
    }
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: var(--color-white);
    border-radius: 100px;
    font-size: 14px;
    color: var(--color-text-secondary);
    box-shadow: var(--shadow-sm);
    margin-bottom: 24px;
    width: fit-content;
}

.badge-icon {
    font-size: 18px;
}

.hero-title {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.brand-name {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-divider {
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    border-radius: 2px;
}

.title-sub {
    font-size: 32px;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.hero-slogan {
    font-size: 22px;
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: 16px;
}

.hero-desc {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
    max-width: 480px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 24px;
}

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

.stat-value {
    display: flex;
    align-items: baseline;
    gap: 2px;
    white-space: nowrap;
}

.stat-number {
    font-size: 32px;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
}

.stat-suffix {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary);
}

.stat-label {
    font-size: 13px;
    color: var(--color-text-tertiary);
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

/* Hero 视觉区 - 手机样机 */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    position: relative;
    animation: phone-float 4s ease-in-out infinite;
}

@keyframes phone-float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-12px);
    }
}

.phone-frame {
    /* 手机框大小 */
    width: 300px;
    height: 620px;
    background: var(--color-text);
    border-radius: 36px;
    padding: 10px;
    box-shadow:
        0 25px 80px rgba(26, 26, 46, 0.25),
        0 10px 30px rgba(26, 26, 46, 0.15),
        inset 0 0 0 2px rgba(255, 255, 255, 0.1);
    position: relative;
    transform: rotate(3deg);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--color-primary-bg);
    border-radius: 28px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
}


.phone-reflection {
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%) scaleY(-1);
    width: 220px;
    height: 40px;
    background: linear-gradient(to bottom, rgba(26, 26, 46, 0.15), transparent);
    border-radius: 50%;
    filter: blur(8px);
}

.floating-card {
    position: absolute;
    padding: 10px 16px;
    background: var(--color-white);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text);
    animation: card-float 5s ease-in-out infinite;
}

.floating-card svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.card-tag {
    top: 10%;
    right: -10px;
    animation-delay: 0s;
}

.card-tag .tag-dot {
    width: 8px;
    height: 8px;
    background: var(--color-success);
    border-radius: 50%;
    animation: dot-pulse 2s ease-out infinite;
}

.card-voice {
    bottom: 25%;
    left: -30px;
    animation-delay: 1s;
}

.card-scan {
    bottom: 10%;
    right: 0;
    animation-delay: 2s;
}

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

@keyframes dot-pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(82, 196, 26, 0.5);
    }
    100% {
        box-shadow: 0 0 0 8px rgba(82, 196, 26, 0);
    }
}

/* 滚动提示 */
.hero-scroll-hint {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--color-text-tertiary);
    font-size: 12px;
    animation: fade-in-up 1s ease 1.5s both;
}

.scroll-mouse {
    width: 22px;
    height: 34px;
    border: 2px solid var(--color-text-tertiary);
    border-radius: 11px;
    display: flex;
    justify-content: center;
    padding-top: 6px;
}

.scroll-wheel {
    width: 3px;
    height: 6px;
    background: var(--color-text-tertiary);
    border-radius: 1.5px;
    animation: scroll-wheel 1.5s ease-in-out infinite;
}

@keyframes scroll-wheel {
    0% {
        transform: translateY(0);
        opacity: 1;
    }
    100% {
        transform: translateY(8px);
        opacity: 0;
    }
}

/* ============================================
   痛点区块
   ============================================ */
.pain-points {
    padding: 120px 0;
    background: var(--color-bg-gray);
}

.pain-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.pain-card {
    padding: 32px 24px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-normal);
}

.pain-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-light);
}

.pain-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
}

.pain-icon iconify-icon {
    display: block;
}

.pain-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}

.pain-card p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ============================================
   核心亮点
   ============================================ */
.features {
    padding: 120px 0;
    background: var(--color-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    padding: 36px 28px;
    background: var(--color-white);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-light);
}

.feature-card:hover .feature-icon {
    background: var(--color-primary);
    color: var(--color-white);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: var(--color-primary-bg);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: all var(--transition-normal);
}

.feature-icon iconify-icon {
    display: block;
}

.feature-card h3 {
    font-size: 19px;
    font-weight: 700;
    margin-bottom: 10px;
}

.feature-card > p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.feature-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tag {
    padding: 4px 12px;
    background: var(--color-white);
    color: var(--color-primary);
    font-size: 12px;
    font-weight: 600;
    border-radius: 100px;
    border: 1px solid var(--color-primary-light);
}

/* ============================================
   使用场景
   ============================================ */
.scenes {
    padding: 120px 0;
    background: var(--color-bg-light-orange);
}

.scenes-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.scene-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}

.scene-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-light);
}

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

.scene-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-primary-bg) 0%, var(--color-white) 100%);
    opacity: 0.8;
}

.scene-emoji {
    position: relative;
    z-index: 1;
    font-size: 64px;
    line-height: 1;
    animation: emoji-bounce 3s ease-in-out infinite;
}

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

.scene-content {
    padding: 20px 24px 24px;
}

.scene-content h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 6px;
}

.scene-content p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ============================================
   下载区块
   ============================================ */
.download {
    padding: 120px 0;
    background: var(--color-white);
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.download-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: 40px 32px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 2px solid transparent;
    transition: all var(--transition-normal);
}

.download-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-light);
}

.download-platform {
    margin-bottom: 28px;
}

.platform-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    background: var(--color-primary-bg);
}

.platform-icon iconify-icon {
    display: block;
}

.download-platform h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 4px;
}

.download-platform p {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.download-meta {
    margin-top: 16px;
    font-size: 13px;
    color: var(--color-text-tertiary);
}

.qrcode-wrapper {
    display: flex;
    justify-content: center;
}

.qrcode-placeholder {
    width: 140px;
    height: 140px;
    padding: 12px;
    background: var(--color-white);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.qrcode-placeholder svg {
    width: 80px;
    height: 80px;
}

.qrcode-placeholder span {
    font-size: 12px;
    color: var(--color-text-tertiary);
}

/* ============================================
   数据安全
   ============================================ */
.security {
    padding: 120px 0;
    background: var(--color-bg-gray);
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 48px;
}

.security-item {
    text-align: center;
    padding: 32px;
    background: var(--color-white);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}

.security-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.security-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
}

.security-icon svg {
    width: 100%;
    height: 100%;
}

/* Iconify 图标包装器 */
.iconify-icon-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    border-radius: 20px;
    background: var(--icon-bg, var(--color-primary-bg));
    color: var(--icon-color, var(--color-primary));
    margin: 0 auto 20px;
}

.iconify-icon-wrap iconify-icon {
    display: block;
}

.security-item h3 {
    font-size: 19px;
    font-weight: 700;
    margin-bottom: 10px;
}

.security-item p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.security-extra {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 24px 32px;
    background: var(--color-primary-bg);
    border-radius: var(--radius-xl);
    max-width: 800px;
    margin: 0 auto;
}

.extra-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.security-extra p {
    font-size: 15px;
    color: var(--color-text-secondary);
}

.security-extra strong {
    color: var(--color-primary);
}

/* ============================================
   CTA
   ============================================ */
.cta {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    text-align: center;
}

.cta-content h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 12px;
}

.cta-content p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 32px;
}

.cta-content .btn-primary {
    background: var(--color-white);
    color: var(--color-primary);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.cta-content .btn-primary:hover {
    background: var(--color-primary-bg);
    transform: translateY(-2px);
    box-shadow: 0 6px 28px rgba(0, 0, 0, 0.2);
}

.cta-content .btn-pulse::before {
    background: var(--color-white);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--color-dark-bg);
    color: var(--color-white);
    padding: 64px 0 32px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.footer-logo svg {
    width: 36px;
    height: 36px;
}

.footer-logo span {
    font-size: 20px;
    font-weight: 700;
}

.footer-desc {
    font-size: 14px;
    color: var(--color-text-tertiary);
    line-height: 1.6;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.footer-column h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--color-white);
}

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

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

.footer-column a,
.footer-column span {
    font-size: 14px;
    color: var(--color-text-tertiary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-column a:hover {
    color: var(--color-primary);
}

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--color-text-tertiary);
    margin-bottom: 4px;
}

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

.footer-contact {
    margin-top: 8px;
}

.footer-contact a {
    color: var(--color-text-tertiary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-contact a:hover {
    color: var(--color-primary);
}

/* ============================================
   返回顶部
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--color-white);
    border: none;
    border-radius: 50%;
    box-shadow: var(--shadow-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    z-index: 9998;
}

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

.back-to-top:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-4px);
}

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

/* ============================================
   Toast
   ============================================ */
.toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    padding: 12px 28px;
    background: var(--color-dark-bg);
    color: var(--color-white);
    font-size: 14px;
    font-weight: 500;
    border-radius: 100px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 10001;
    white-space: nowrap;
}

.toast.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* ============================================
   滚动动画
   ============================================ */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

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

/* Stagger delays */
.pain-card:nth-child(1) { transition-delay: 0s; }
.pain-card:nth-child(2) { transition-delay: 0.1s; }
.pain-card:nth-child(3) { transition-delay: 0.2s; }
.pain-card:nth-child(4) { transition-delay: 0.3s; }

.feature-card:nth-child(1) { transition-delay: 0s; }
.feature-card:nth-child(2) { transition-delay: 0.1s; }
.feature-card:nth-child(3) { transition-delay: 0.2s; }
.feature-card:nth-child(4) { transition-delay: 0.1s; }
.feature-card:nth-child(5) { transition-delay: 0.2s; }
.feature-card:nth-child(6) { transition-delay: 0.3s; }

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

.download-card:nth-child(1) { transition-delay: 0s; }
.download-card:nth-child(2) { transition-delay: 0.15s; }
.download-card:nth-child(3) { transition-delay: 0.3s; }

.security-item:nth-child(1) { transition-delay: 0s; }
.security-item:nth-child(2) { transition-delay: 0.15s; }
.security-item:nth-child(3) { transition-delay: 0.3s; }

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1023px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 48px;
    }

    .hero-content {
        order: 1;
    }

    .hero-visual {
        order: 0;
    }

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

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

    .hero-desc {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .phone-mockup {
        transform: scale(0.85);
    }

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

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

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

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

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-links {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 767px) {
    .nav-links {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 0;
        box-shadow: var(--shadow-md);
        transform: translateY(-150%);
        opacity: 0;
        transition: all var(--transition-normal);
        pointer-events: none;
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .nav-links li {
        border-bottom: 1px solid var(--color-border);
    }

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

    .nav-links a {
        display: block;
        padding: 14px 0;
        font-size: 16px;
    }

    .nav-toggle {
        display: flex;
    }

    .hero {
        padding: 100px 0 60px;
        min-height: auto;
    }

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

    .title-sub {
        font-size: 20px;
    }

    .hero-slogan {
        font-size: 18px;
    }

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

    .phone-mockup {
        transform: scale(0.7);
    }

    .floating-card {
        display: none;
    }

    .pain-grid,
    .features-grid,
    .scenes-grid,
    .download-grid,
    .security-grid {
        grid-template-columns: 1fr;
    }

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

    .section-desc {
        font-size: 16px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 16px;
    }

    .stat-divider {
        width: 40px;
        height: 1px;
    }

    .stat-item {
        align-items: center;
    }

    .cta-content h2 {
        font-size: 26px;
    }

    .footer-links {
        grid-template-columns: 1fr;
        gap: 24px;
    }

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

/* ============================================
   法律页面通用样式
   ============================================ */
.legal-page {
    background: var(--color-white);
    min-height: 100vh;
}

.legal-page .navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
}

.legal-header {
    padding: 120px 0 40px;
    background: var(--color-primary-bg);
    text-align: center;
}

.legal-header h1 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.3;
}

.legal-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    color: var(--color-text-secondary);
    font-size: 14px;
}

.legal-meta-divider {
    color: var(--color-border);
}

@media (max-width: 767px) {
    .legal-header h1 {
        font-size: 24px;
    }
    
    .legal-meta {
        flex-direction: column;
        gap: 8px;
    }
    
    .legal-meta-divider {
        display: none;
    }
}

.legal-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 48px 24px 80px;
}

.legal-content h2 {
    font-size: 22px;
    font-weight: 700;
    margin: 40px 0 16px;
    color: var(--color-text);
    padding-bottom: 8px;
    border-bottom: 2px solid var(--color-border);
}

.legal-content h3 {
    font-size: 17px;
    font-weight: 700;
    margin: 24px 0 10px;
    color: var(--color-text);
}

.legal-content p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: 12px;
}

.legal-content ul,
.legal-content ol {
    margin: 12px 0;
    padding-left: 24px;
}

.legal-content li {
    font-size: 15px;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: 6px;
}

.legal-content strong {
    color: var(--color-text);
    font-weight: 600;
}

.legal-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 24px;
    color: var(--color-primary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: gap var(--transition-fast);
}

.legal-back:hover {
    gap: 10px;
}

.legal-back svg {
    width: 16px;
    height: 16px;
}

.legal-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 14px;
}

.legal-table th,
.legal-table td {
    padding: 12px 16px;
    text-align: left;
    border: 1px solid var(--color-border);
}

.legal-table th {
    background: var(--color-primary-bg);
    font-weight: 600;
    color: var(--color-text);
}

.legal-table td {
    color: var(--color-text-secondary);
}

/* 动画关键帧 */
@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}