/* 重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-dark: #1d1d1f; /* 深空灰 */
    --primary-light: #f5f5f7; /* 浅灰 */
    --text-dark: #1d1d1f; /* 深灰文字 */
    --text-light: #f5f5f7; /* 浅色文字 */
    --text-secondary: #86868b; /* 次要文字 */
    --accent-blue: #0071e3; /* 蓝 */
    --accent-green: #00c853; /* 绿色 */
    --accent-purple: #bf5af2; /* 紫色 */
    --border-radius-lg: 20px; /* 大圆角 */
    --border-radius-md: 12px; /* 中等圆角 */
    --border-radius-sm: 8px; /* 小圆角 */
    --transition-smooth: all 0.6s cubic-bezier(0.4, 0, 0.2, 1); /* 减慢悬停速度 */
    --transition-fast: all 0.2s ease;
    --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-medium: 0 8px 30px rgba(0, 0, 0, 0.12);
    --shadow-heavy: 0 20px 60px rgba(0, 0, 0, 0.2);
}

/* 字体设置 - 使用系统字体栈 */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Inter', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    font-size: 17px;
    line-height: 1.47059;
    font-weight: 400;
    color: var(--text-dark);
    background: var(--primary-light);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4 {
    font-weight: 600; /* Semibold for headings */
    line-height: 1.1;
    letter-spacing: -0.02em;
}

h1 {
    font-size: 3.5rem;
    font-weight: 700;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

p {
    line-height: 1.58824;
    margin-bottom: 1rem;
}

strong {
    font-weight: 600;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: #2c2c30;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition-fast);
    cursor: pointer;
}

.nav-logo:hover {
    color: var(--accent-blue);
    transform: translateY(-1px);
}

.logo-icon {
    width: 20px;
    height: 19px;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 400;
    font-size: .8rem;
    transition: var(--transition-fast);
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-blue);
    transition: var(--transition-fast);
}

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

.nav-links .nav-cta {
    background: var(--accent-blue);
    color: white !important;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-md);
    font-weight: 500 !important;
    font-size: 11px;
    transition: var(--transition-fast);
}

.nav-cta:hover {
    background: #0077ED;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.nav-cta::after {
    display: none;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 24px;
    height: 24px;
    position: relative;
}

.nav-toggle span {
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--text-dark);
    transition: var(--transition-fast);
}

.nav-toggle span:first-child {
    top: 6px;
}

.nav-toggle span:last-child {
    top: 16px;
}

/* 汉堡菜单打开状态 */
.nav-toggle.active span:first-child {
    transform: rotate(45deg);
    top: 11px;
}

.nav-toggle.active span:last-child {
    transform: rotate(-45deg);
    top: 11px;
}

/* 移动端下拉菜单 */
.mobile-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(29, 29, 31, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 0;
    z-index: 999;
}

.mobile-dropdown.active {
    display: flex;
    flex-direction: column;
}

.mobile-nav-link {
    color: var(--text-light);
    text-decoration: none;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 500;
    transition: var(--transition-fast);
    text-align: center;
}

.mobile-nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--accent-blue);
}

/* 第一屏：英雄区 - 深空灰背景 */
.hero-section {
    min-height: 60vh;
    background: linear-gradient(135deg, #0f172a 0%, #131c2f 100%);
    color: var(--text-light);
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    overflow: hidden;
    padding-top: 80px; /* 导航栏高度 */
    padding-bottom: 4rem;
}

@keyframes float-orb {
    0%,
    100% {
        transform: translate(0, 0) rotate(0deg);
    }

    25% {
        transform: translate(50px, 50px) rotate(90deg);
    }

    50% {
        transform: translate(0, 100px) rotate(180deg);
    }

    75% {
        transform: translate(-50px, 50px) rotate(270deg);
    }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    padding: 2.8rem 2rem 0;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.hero-title {
    font-size: 4.5rem;
    line-height: 1;
    margin-bottom: 2rem;
    opacity: 0;
    text-align: center;
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.2s forwards;
}

/* 第一屏标签样式 */
.hero-section .section-label {
    margin: 0 auto 2rem;
    width: fit-content;
}

.title-line {
    display: block;
    margin-bottom: 0.5rem;
}

/* 渐变文字效果 - 从#5fa6fa到#23d2ee */
.gradient-text {
    background: linear-gradient(90deg, #5fa6fa 0%, #23d2ee 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent !important;
    display: inline-block;
    font-weight: 700;
    position: relative;
}

.hero-subtitle {
    font-size: 1.4rem;
    font-weight: 300;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    opacity: 0;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) 0.4s forwards;
}

/* 白色文字部分 */
.text-white {
    color: var(--text-light);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 功能卡片区 - 现在在第一屏内 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: 1.5rem;
    margin-bottom: 1.5rem;
}

/* 在小屏幕上调整为单列 */
@media (max-width: 768px) {
    .feature-grid {
        grid-template-columns: 1fr;
    }
}

.feature-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    transition: transform 0.6s cubic-bezier(0.215, 0.61, 0.355, 1),
        background 0.3s cubic-bezier(0.215, 0.61, 0.355, 1),
        box-shadow 0.3s cubic-bezier(0.215, 0.61, 0.355, 1);
    opacity: 0;
    transform: translateY(30px) scale(1);
    position: relative;
    z-index: 1;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.feature-card.reveal {
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    animation-fill-mode: forwards;
}

.feature-card:hover {
    transform: translateY(-3px) scale(1.02) !important;
    box-shadow: var(--shadow-heavy);
    background: rgba(255, 255, 255, 0.07);
    z-index: 10;
}

.feature-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 1rem;
    color: var(--accent-blue);
}

.feature-tagline {
    font-size: 1rem;
    font-weight: 600;
    color: #93c5fd;
    margin: .2em 0 0.75rem;
}

.feature-desc {
    color: #c1c1c1;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* 第二屏：应用工具区 - 纯白背景 */
.app-section {
    min-height: auto;
    padding: 4rem 0 5rem;
    background: var(--primary-light);
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    border-top: 18px solid white;
    margin-top: -18px;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 2.5rem;
    opacity: 0;
    transform: translateY(30px);
}

.section-header.reveal {
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.section-title {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.section-title span {
    display: block;
}

.section-desc {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.6;
    padding: 0 8rem;
    font-weight: 300;
}

.app-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
    opacity: 0;
    transform: translateY(30px);
}

.app-comparison.reveal {
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.2s forwards;
}

.app-card {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.app-mockup {
    margin-bottom: 2rem;
}

.phone-frame {
    width: 250px;
    height: 500px;
    background: white;
    border-radius: 40px;
    padding: 1.5rem 0.75rem;
    position: relative;
    box-shadow: var(--shadow-medium);
    transition: var(--transition-smooth);
}

.phone-frame.dark {
    background: var(--primary-dark);
    color: var(--text-light);
}

.phone-frame:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-heavy);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: #f8f9fa;
    border-radius: 28px;
    overflow: hidden;
    position: relative;
}

.screen-header {
    height: 60px;
    background: #0071e3;
    display: flex;
    align-items: center;
    justify-content: center;
}

.screen-title {
    color: white;
    font-weight: 600;
    font-size: 1.125rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-green);
    border-radius: 50%;
    position: absolute;
    top: 20px;
    right: 20px;
}

.screen-content {
    padding: 1.5rem;
}

.screen-content.professional {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.mock-card {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: white;
    color: #000;
    font-size: 0.875rem;
    border-radius: var(--border-radius-md);
    margin-bottom: 0.75rem;
    box-shadow: var(--shadow-subtle);
    cursor: pointer;
    transition: var(--transition-fast);
}

.mock-card.active {
    background: var(--accent-blue);
    color: white;
}

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

.mock-icon {
    width: 28px;
    height: 28px;
    background: rgba(0, 113, 227, 0.1);
    border-radius: 8px;
}

.mock-chart {
    display: flex;
    align-items: flex-end;
    gap: 1.2rem;
    height: 120px;
    margin-bottom: 1rem;
    padding: 1.5rem;
}

.chart-bar {
    flex: 1;
    background: linear-gradient(to top, #0071e3, #5fa6fa);
    border-radius: 6px 6px 0 0;
    min-height: 20px;
    box-shadow: 0 2px 8px rgba(0, 113, 227, 0.2);
}

.chart-bar:nth-child(1) {
    height: 80%;
}

.chart-bar:nth-child(2) {
    height: 60%;
}

.chart-bar:nth-child(3) {
    height: 90%;
}

.mock-status {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1.5rem;
}

.status-item {
    padding: 0.5rem 1rem;
    background: #f8f9fa;
    border-radius: 8px;
    text-align: center;
    font-size: 0.875rem;
    font-weight: 500;
    color: #1d1d1f;
    border: 1px solid #e0e0e0;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.status-item:hover {
    background: #e9ecef;
    border-color: #d0d0d0;
}

.status-item.on {
    background: #0071e3;
    color: white;
    border-color: #0071e3;
}

.app-info {
    text-align: center;
    max-width: 400px;
}

.app-tag {
    display: inline-block;
    padding: 0.25rem 1rem;
    background: var(--accent-blue);
    color: white;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin: 1rem 0;
}

.app-desc {
    color: var(--text-secondary);
    line-height: 1.6;
}

.benefits-statement {
    max-width: 1000px;
    margin: 0 auto 2rem;
    padding: 0;
    background: transparent;
    border-radius: 0;
    box-shadow: none;
    opacity: 0;
    transform: translateY(30px);
}

.benefits-statement.reveal {
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.4s forwards;
}

.benefits-modules {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4rem;
    max-width: 1000px;
    margin: 0 auto 3rem;
    opacity: 0;
    transform: translateY(30px);
}

.benefits-modules.reveal {
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.6s forwards;
}

.benefit-module {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-medium);
    transition: var(--transition-smooth);
}

.benefit-module:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-heavy);
}

.benefit-icon {
    width: 64px;
    height: 64px;
    color: var(--accent-blue);
    margin-bottom: 0.5rem;
}

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

.benefit-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.benefit-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 300px;
    margin: 0 auto;
}

.benefit-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.benefit-main-title {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-dark);
    line-height: 1.4;
}

/* 第三屏：平台区 */
.platform-section {
    min-height: auto;
    padding: 4rem 0 5rem;
    background: var(--primary-light);
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    border-top: 18px solid white;
    margin-top: -18px;
}

.dashboard-preview {
    margin-bottom: 3rem;
    opacity: 0;
    transform: translateY(30px);
    display: flex;
    justify-content: center;
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.dashboard-preview.reveal {
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.2s forwards;
}

.dashboard-mockup {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-medium);
    display: flex;
    height: 400px;
    overflow: hidden;
    width: 100%;
    margin-left: auto;
    margin-right: auto;
}

.dash-sidebar {
    width: 80px;
    background: var(--primary-dark);
    border-radius: var(--border-radius-md);
    padding: 1.5rem 0.75rem;
    margin-right: 2rem;
}

.dash-nav-item {
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-sm);
    margin-bottom: 1rem;
    transition: var(--transition-fast);
}

.dash-nav-item.active {
    background: var(--accent-blue);
}

.dash-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.dash-header {
    height: 60px;
    background: var(--primary-light);
    border-radius: var(--border-radius-md);
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1.5rem;
}

.dash-title {
    width: 200px;
    height: 24px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 4px;
}

.dash-actions {
    width: 120px;
    height: 32px;
    background: rgba(0, 113, 227, 0.1);
    border-radius: 20px;
}

.dash-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.dash-card {
    height: 120px;
    background: linear-gradient(135deg, rgba(0, 113, 227, 0.1), rgba(191, 90, 242, 0.1));
    border-radius: var(--border-radius-md);
}

.dash-table {
    flex: 1;
    background: var(--primary-light);
    border-radius: var(--border-radius-md);
}

.platform-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    place-items: center;
}

.platform-card {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 2.5rem;
    transition: var(--transition-smooth);
    opacity: 0;
    transform: translateY(30px);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.platform-card.reveal {
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.platform-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-heavy);
}

.platform-icon {
    width: 64px;
    height: 64px;
    color: var(--accent-blue);
}

/* 投标指挥舱样式 - 图标和副标题改为 #13b99d */
.bidding-command .platform-icon {
    color: #13b99d;
}

.bidding-command .platform-tagline {
    color: #13b99d;
}

/* 体系迎检助手样式 - 图标和副标题改为 #f97616 */
.inspection-assistant .platform-icon {
    color: #f97616;
}

.inspection-assistant .platform-tagline {
    color: #f97616;
}

.platform-tagline {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent-blue);
    margin-bottom: .5rem;
}

.platform-desc {
    color: var(--text-secondary);
    font-size: .9rem;
    line-height: 1.6;
    max-width: 300px;
    margin: 0 auto;
}

/* CTA区域 */
.cta-section {
    min-height: 90vh;
    padding: 2rem 0;
    background: white;
    color: var(--text-dark);
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.cta-content {
    opacity: 0;
    transform: translateY(30px);
}

.cta-content.reveal {
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.cta-content h2 {
    font-size: 3rem;
    margin-bottom: 3rem;
    letter-spacing: -0.01em;
    line-height: 1.2;
    font-size: clamp(24px, 4.4vw, 40px);
    color: var(--text-dark);
    margin-inline: auto;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-btn {
    padding: 1rem 2.5rem;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition-smooth);
    display: inline-block;
}

.cta-btn.primary {
    background: var(--accent-blue);
    color: white;
}

.cta-btn.primary:hover {
    background: #0077ED;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.cta-btn.secondary {
    background: var(--primary-light);
    color: var(--text-dark);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.cta-btn.secondary:hover {
    background: rgba(0, 0, 0, 0.05);
    transform: translateY(-2px);
}

/* 页脚 */
.footer {
    background: var(--primary-dark);
    color: var(--text-secondary);
    padding: 1rem 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .nav-toggle {
        display: block;
    }
    
    .navbar {
        position: relative;
    }

    .hero-title {
        font-size: 2.5rem;
        margin-bottom: 1rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
        line-height: 1.3;
        padding: 0 1rem;
    }

    /* 在768px以下屏幕重新设计标签和内容布局 */
    .hero-content {
        padding: 0 2rem;
        margin-top: 0;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        min-height: 28vh;
    }

    .hero-section .section-label {
        position: static;
        top: 0;
        margin: 0 auto 1.5rem;
    }

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

    .app-comparison {
        grid-template-columns: 1fr;
        gap: 4rem;
    }

    .phone-frame {
        width: 220px;
        height: 440px;
    }

    .dashboard-preview {
        display: flex;
        justify-content: center;
        margin-left: auto;
        margin-right: auto;
        width: 100%;
        max-width: 100%;
    }

    .dashboard-mockup {
        flex-direction: column;
        height: auto;
    }

    .dash-sidebar {
        width: 100%;
        height: 60px;
        margin-right: 0;
        margin-bottom: 1.5rem;
        padding: 0.75rem 1.5rem;
        display: flex;
        gap: 1rem;
    }

    .dash-nav-item {
        flex: 1;
        height: 100%;
        margin-bottom: 0;
    }

    .dash-cards {
        grid-template-columns: 1fr;
    }

    .platform-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 0 1rem;
        place-items: center;
    }

    .cta-content h2 {
        font-size: 2rem;
    }

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

    .benefit-icon {
        width: 56px;
        height: 56px;
    }

    .benefit-title {
        font-size: 1.25rem;
    }

    .benefit-desc {
        font-size: 1rem;
        max-width: 100%;
    }

    .benefit-header {
        margin-bottom: 2rem;
    }

    .benefit-main-title {
        font-size: 1.5rem;
    }

    .benefits-modules {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 0 1rem;
    }

    .benefit-module {
        padding: 2rem;
        min-width: 280px;
    }
}

/* 768px到480px之间的屏幕优化 - 平滑过渡 */
@media (max-width: 768px) and (min-width: 481px) {
    .hero-content {
        padding: 0 2rem;
        margin-top: 0;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        min-height: 30vh;
    }

    .hero-section .section-label {
        position: static;
        top: 0;
        margin: 0 auto 1.8rem;
    }

    .hero-title {
        font-size: 3rem;
        line-height: 1.1;
        margin-bottom: 1.2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
        line-height: 1.3;
        padding: 0 1rem;
    }
    .section-desc,.section-desc{
        padding: 0 1rem;
    }
}

/* 480px以下屏幕优化 */
@media (max-width: 480px) {
    .hero-content {
        padding: 0 1.5rem;
        margin-top: 0;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        min-height: 32vh;
    }

    .hero-section .section-label {
        position: static;
        top: 0;
        margin: 0 auto 1.2rem;
    }

    .hero-title {
        font-size: 2rem;
        line-height: 1.2;
        margin-bottom: 0.8rem;
    }

    .hero-subtitle {
        font-size: 1rem;
        line-height: 1.4;
        padding: 0 0.5rem;
    }

    .label-text {
        font-size: 0.6rem;
        padding: 0.3rem 1rem;
    }

    .app-section .section-label,
    .platform-section .section-label {
        position: static;
        top: 0;
        margin: 0 auto 1rem;
    }
    .section-desc,.section-desc{
        padding: 0 1rem;
    }
    
    /* 第三屏移动端优化 */
    .dashboard-preview {
        display: flex;
        justify-content: center;
        margin-left: auto;
        margin-right: auto;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
    }
    
    .dashboard-mockup {
        width: 100%;
        max-width: 100%;
        padding: 1.2rem;
        height: auto;
        box-sizing: border-box;
    }
    
    /* dashboard内部元素优化 */
    .dash-sidebar {
        height: 50px;
        padding: 0.5rem 1rem;
        gap: 0.75rem;
        margin-bottom: 1rem;
    }
    
    .dash-nav-item {
        min-width: 40px;
    }
    
    .platform-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        place-items: center;
        justify-content: center;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
    
    .platform-card {
        width: 100%;
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
        padding: 1.5rem;
        min-width: 260px;
        box-sizing: border-box;
    }
    
    /* 确保第三屏在480px下容器内的所有内容都有相同边距 */
    .platform-section .container {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }
}

/* 360px以下超小屏幕优化 */
@media (max-width: 360px) {
    /* 第三屏dashboard优化 */
    .dashboard-mockup {
        padding: 1rem;
    }
    
    /* 第三屏platform-grid优化 */
    .platform-grid {
        gap: 1rem;
    }
    
    .platform-card {
        padding: 1.5rem;
        min-width: 0;
        max-width: 100%;
    }
    
    /* 确保第三屏在360px下容器内的所有内容都有相同边距 */
    .platform-section .container {
        padding-left: 0.5rem;
        padding-right: 0.5rem;
    }
}

/* 顶部标签样式 */
.section-label {
    text-align: center;
    z-index: 1001;
    opacity: 0;
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.2s forwards;
    width: fit-content;
    max-width: 90%;
}

/* 第一屏标签样式 */
.hero-section .section-label {
    margin: 0 auto 2rem;
    width: fit-content;
}

.label-text {
    display: inline-block;
    font-size: .7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.4rem 1.2rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 30px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.9);
}

/* 第二屏和第三屏标签样式 */
.app-section .section-label,
.platform-section .section-label {
    margin: 0 auto 1.2rem;
    width: fit-content;
}

.app-section .label-text {
    background: rgba(0, 113, 227, 0.1);
    border: 1px solid rgba(0, 113, 227, 0.3);
    color: #0071e3;
}

.platform-section .label-text {
    background: rgba(0, 200, 83, 0.1);
    border: 1px solid rgba(0, 200, 83, 0.3);
    color: #00c853;
}

/* 工具类 */
.reveal {
    opacity: 0;
    transform: translateY(30px);
}

.fade-in {
    opacity: 0;
}