/* 基础变量 */
:root {
    --primary-color: #FF7F7F;
    --primary-light: #FFA07A;
    --primary-dark: #FF6B35;
    --accent-orange: #FFB347;
    --gradient-primary: linear-gradient(135deg, #FF7F7F 0%, #FF6B35 50%, #FFB347 100%);
    --gradient-btn: linear-gradient(135deg, #FF7F7F 0%, #FF6B35 100%);
    --gradient-text: linear-gradient(135deg, #FF7F7F 0%, #FF6B35 50%, #FF8E53 100%);
    --bg-primary: #ffffff;
    --bg-secondary: #fff9f5;
    --bg-tertiary: #fff5f0;
    --bg-card: #ffffff;
    --bg-hover: #ffefe8;
    --text-primary: #2d3748;
    --text-secondary: #718096;
    --text-muted: #a0aec0;
    --border-color: #e2e8f0;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family:"微软雅黑", -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0 28px;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: none;
	height:48px;
	line-height: 48px;
}

.btn-primary {
    background: var(--gradient-btn);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #FF8A8A 0%, #FF7A45 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 127, 127, 0.35);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

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

/* 导航栏 */
.navbar {
    background-color: white;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 40px;
}

.navbar.scrolled {
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
	width:54px;
	height:54px;
}
.logo-icon img {
	width:100%;
}

.logo-text {
    font-size: 22px;
    font-weight: 600;
    background: linear-gradient(135deg, #FF7F7F 0%, #FF6B35 50%, #FFB347 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.nav_cont {
	display: flex;
    gap: 32px;
    align-items: center;
	justify-content: center;
}

.nav-link {
    font-size: 17px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
    padding: 8px 0;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
    border-radius: 2px;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.language-selector {
    position: relative;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 16px;
    background-color: var(--bg-secondary);
    border: 1px solid #FF9999;
    border-radius: 8px;
    color: #FA312B;
    font-size: 16px;
    cursor: pointer;
    transition: var(--transition);
	height:48px;
	line-height: 48px;
}

.lang-btn:hover {
    border-color: var(--primary-color);
}

.lang-btn .arrow {
    font-size: 10px;
    transition: var(--transition);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    min-width: 140px;
    max-height: 300px;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.lang-dropdown.show {
    opacity: 1;
    visibility: visible;
}

.lang-dropdown::-webkit-scrollbar {
    width: 6px;
}

.lang-dropdown::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 3px;
}

.lang-dropdown::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.lang-dropdown::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

.lang-item {
    display: block;
    padding: 10px 16px;
    color: var(--text-secondary);
    font-size: 14px;
    transition: var(--transition);
}

.lang-item:hover,
.lang-item.active {
    background-color: var(--bg-hover);
    color: var(--primary-color);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition);
}

.mobile-language-selector,
.mobile-download-btn {
    display: none;
}

/* 英雄区域 */
.hero {
    position: relative;
    padding: 100px 0 0;
    overflow: hidden;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    min-height: 100vh;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.hero-glow {
    position: absolute;
    top: -200px;
    right: -100px;
    width: 600px;
    height: 600px;
    background: radial-gradient(ellipse at center, rgba(255, 127, 127, 0.2) 0%, rgba(255, 107, 53, 0.1) 40%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 60px;
}

.hero-left {
    text-align: center;
    max-width: 800px;
}

.hero-tag {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, rgba(255, 127, 127, 0.1) 0%, rgba(255, 107, 53, 0.1) 100%);
    border: 1px solid rgba(255, 127, 127, 0.3);
    border-radius: 20px;
    font-size: 16px;
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.hero-title {
    font-size: 52px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 24px;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.hero-description {
    font-size: 16px;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 24px;
    margin-bottom: 48px;
	justify-content: center;
	align-items: center;
}

.hero-buttons .btn {
	font-size:20px;
	border-radius: 30px;
	height: 56px;
	line-height: 56px;
	padding:0 40px;
}

.hero-stats {
    display: flex;
    gap: 56px;
	justify-content: center;
	align-items: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-number {
    font-size: 32px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 16px;
    color: var(--text-muted);
}

.hero-right {
    display: flex;
    justify-content: center;
    width: 100%;
}

.hero-image {
    display: flex;
    justify-content: center;
}
.hero-image img {
	max-width:100%;
}

.pdf-preview {
    width: 360px;
    background-color: white;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.preview-toolbar {
    display: flex;
    gap: 12px;
    padding: 16px;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.toolbar-icon {
    font-size: 20px;
}

.preview-content {
    padding: 24px;
}

.pdf-page {
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
}

.page-header {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    text-align: center;
}

.page-text {
    height: 10px;
    background-color: var(--bg-secondary);
    border-radius: 2px;
    margin-bottom: 10px;
}

.page-text.short {
    width: 60%;
}

.page-image {
    height: 60px;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    border-radius: 4px;
    margin-bottom: 10px;
}

/* 滚动指示器 */
.scroll-indicator {
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    cursor: pointer;
}

.mouse-scroll {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.mouse {
    width: 26px;
    height: 42px;
    border: 2px solid var(--primary-color);
    border-radius: 13px;
    position: relative;
    background: rgba(255, 107, 107, 0.05);
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll-wheel 1.5s infinite;
}

@keyframes scroll-wheel {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(12px);
    }
}

.scroll-arrows {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.scroll-arrow {
    width: 10px;
    height: 10px;
    border-right: 2px solid var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    transform: rotate(45deg);
    animation: scroll-arrow 1.5s infinite;
    opacity: 0;
}

.scroll-arrow:nth-child(1) {
    animation-delay: 0s;
}

.scroll-arrow:nth-child(2) {
    animation-delay: 0.15s;
}

.scroll-arrow:nth-child(3) {
    animation-delay: 0.3s;
}

@keyframes scroll-arrow {
    0% {
        opacity: 0;
        transform: rotate(45deg) translate(-5px, -5px);
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: rotate(45deg) translate(5px, 5px);
    }
}

/* Hero波浪曲线 */
.hero-waves {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 150px;
    overflow: hidden;
    pointer-events: none;
}

.wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.wave1 {
    animation: wave-flow 8s ease-in-out infinite;
}

.wave2 {
    animation: wave-flow 6s ease-in-out infinite reverse;
}

.wave3 {
    animation: wave-flow 10s ease-in-out infinite;
}

.wave4 {
    z-index: 1;
}

@keyframes wave-flow {
    0%, 100% {
        transform: translateX(0);
    }
    50% {
        transform: translateX(-25px);
    }
}

/* 区块通用样式 */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    padding: 8px 26px;
    background-color: var(--bg-tertiary);
    border-radius: 30px;
    font-size: 18px;
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.section-title {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.section-description {
    font-size: 18px;
    color: var(--text-muted);
}

/* 功能特性 */
.features {
    padding: 100px 0;
    background-color: var(--bg-primary);
}

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

.feature-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 32px;
    transition: var(--transition);
}

.feature-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(255, 107, 107, 0.15);
}

.feature-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-tertiary);
    border-radius: 16px;
    margin-bottom: 20px;
}

.feature-icon img {
	width:70%;
}

.feature-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-desc {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* 编辑工具 */
.tools {
    padding: 100px 0;
    background-color: var(--bg-secondary);
}
.tools .section-tag {
	background:rgba(255,255,255,1);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}

.tool-card {
    background-color: var(--bg-card);
    border: 1px solid #fed7ce;
    border-radius: var(--border-radius);
    padding: 24px;
    text-align: center;
    transition: var(--transition);
	display:flex;
	justify-content: center;
	align-items: center;
	flex-direction: column;
}

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

.tool-icon {
    width: 72px;
	height: 72px;
    margin: 0 auto;
}
.tool-icon img {
	width:80%;
}

.tool-name {
    font-size: 18px;
    font-weight: 500;
    color: var(--text-primary);
}

.tool-card:hover .tool-name {
	color:#FF6B6B
}

/* 强大的编辑功能 - Tab选项卡 */
.edit-functions {
    padding: 100px 0;
    background-color: var(--bg-primary);
}

.tabs-container {
    max-width: 1000px;
    margin: 0 auto;
}

.tabs-nav {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 48px;
    background-color: var(--bg-secondary);
    padding: 8px;
    border-radius: 16px;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 16px 28px;
    background-color: transparent;
    border: none;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 500;
    color:#333;
    cursor: pointer;
    transition: var(--transition);
}

.tab-btn svg {
    opacity: 0.7;
    transition: var(--transition);
}

.tab-btn:hover {
    color: var(--primary-color);
}

.tab-btn:hover svg {
    opacity: 1;
}

.tab-btn.active {
    background-color: white;
    color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.tab-btn.active svg {
    opacity: 1;
}

.tabs-content {
    position: relative;
}

.tab-panel {
    display: none;
    animation: fadeIn 0.4s ease;
}

.tab-panel.active {
    display: block;
}

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

.tab-content-wrapper {
    display: flex;
    align-items: center;
    gap: 60px;
}

.tab-text {
    flex: 1;
}

.tab-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.tab-desc {
    font-size: 16px;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 32px;
}

.tab-features {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.tab-features li {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.feature-icon-wrap {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #fee9de;
    border-radius: 50%;
}

.feature-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.feature-text strong {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.feature-text em {
    font-size: 16px;
    font-style: normal;
    color:#888;
}

.tab-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.tab-image img {
    width:100%;
}

/* 超强格式转换 */
.format-conversion {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
}


.format-conversion .section-tag {
    background-color: #ffffff;
    color: var(--primary-color);
}

.format-conversion .section-title {
    color: var(--text-primary);
}

.format-conversion .section-description {
    color: var(--text-muted);
}

.format-conversion-content {
    display: flex;
    gap: 60px;
    align-items: flex-start;
}

.format-left {
    flex: 1;
    position: relative;
}

.format-icons {
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 16px;
    z-index: 10;
	background: url(../images/huan.png) no-repeat left top;
	background-size:auto 120%;
	width:100%;
	min-height:280px;
	box-sizing: border-box;
    padding: 30px 0 0 0;
    justify-content: end;
}

.format-icon-item {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0px 10px rgba(255, 107, 107, 0.3);
    animation: float 3s ease-in-out infinite;
}

.format-icon-item:nth-child(1) { animation-delay: 0s; }
.format-icon-item:nth-child(2) { animation-delay: 0.2s; }
.format-icon-item:nth-child(3) { animation-delay: 0.4s; }
.format-icon-item:nth-child(4) { animation-delay: 0.6s; }
.format-icon-item:nth-child(5) { animation-delay: 0.8s; }

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

.format-window {
    background: white;
    border: 1px solid #fec6bb;
    border-radius: 16px;
    overflow: hidden;
    margin-top: 250px;
    box-shadow: 0 0 15px rgba(255,107,107,.3);
}

.window-header {
    display: flex;
    gap: 8px;
    padding: 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid #fec6bb;
}

.window-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.window-dot.red { background: #FF5F56; }
.window-dot.yellow { background: #FFBD2E; }
.window-dot.green { background: #27CA40; }

.window-content {
    padding: 24px;
}

.format-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.format-cell {
    background: var(--bg-tertiary);
    border: 1px solid #fed7ce;
    border-radius: 8px;
    padding: 12px;
    text-align: center;
    font-size: 16px;
    font-weight: 500;
    color: var(--primary-color);
    transition: var(--transition);
}

.format-cell:hover {
    background: var(--bg-hover);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.format-check {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px;
    background: rgba(76, 175, 80, 0.1);
    border: 1px solid rgba(76, 175, 80, 0.3);
    border-radius: 8px;
    color: #4CAF50;
    font-size: 16px;
    font-weight: 500;
}

.format-right {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.format-card {
    background: white;
    border: 1px solid #fed7ce;
    border-radius: 16px;
    padding: 24px;
    transition: var(--transition);
}

.format-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(255, 107, 107, 0.15);
}

.main-card {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.main-card .card-icon {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    background: var(--bg-tertiary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.main-card .card-icon img {
	width:74%;
}

.card-content {
    flex: 1;
}

.card-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.card-desc {
    font-size: 16px;
    color: #777;
    line-height: 1.8;
    margin-bottom: 16px;
}

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

.card-tag {
    padding: 6px 20px;
    background: var(--bg-tertiary);
    border: 1px solid #fed7ce;
    border-radius: 20px;
    font-size: 14px;
    color: var(--primary-color);
}

.format-cards-row {
    display: flex;
    gap: 20px;
}

.small-card {
    flex: 1;
    text-align: center;
    padding: 25px;
}

.small-card .card-icon {
    width: 64px;
    height: 64px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
}
.small-card .card-icon img {
	width:70%;
}

.card-icon.blue {
    background: rgba(33, 150, 243, 0.1);
    color: #2196F3;
}

.card-icon.purple {
    background: rgba(156, 39, 176, 0.1);
    color: #9C27B0;
}

.card-icon.green {
    background: rgba(76, 175, 80, 0.1);
    color: #4CAF50;
}

.card-icon.orange {
    background: rgba(255, 152, 0, 0.1);
    color: #FF9800;
}

.small-card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.small-card-desc {
    font-size: 16px;
    color: #777;
}

/* 使用场景 */
.scenarios {
    padding: 100px 0;
    background-color: var(--bg-primary);
}

.scenarios-list {
    display: flex;
    flex-direction: column;
    gap: 80px;
}

.scenario-item {
    display: flex;
    align-items: center;
    gap: 60px;
}

.scenario-item.reverse {
    flex-direction: row-reverse;
}

.scenario-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.scenario-image img {
    max-width:90%;
}

.scenario-text {
    flex: 1;
}

.scenario-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.scenario-desc {
    font-size: 16px;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 24px;
}

.scenario-highlights {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.scenario-highlights li {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 18px;
    color: var(--text-secondary);
}

.highlight-icon {
    width:26px;
	height:26px;
}
.highlight-icon img {
	width:100%;
}

/* 下载区域 */
.download {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
}

.download-content {
    display: flex;
    align-items: center;
    gap: 80px;
}

.download-left {
    flex: 1;
}

.download-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.download-description {
    font-size: 16px;
    color: #543838;
    line-height: 1.8;
    margin-bottom: 32px;
}

.download-buttons {
    display: flex;
	flex-direction: column;
    gap: 16px;
    flex-wrap: wrap;
}
.download-buttons .btn {
	max-width:300px;
	height:60px;
	line-height: 60px;
	font-size:20px;
	border-radius: 40px;
	gap:25px;
}
.download-buttons .btn img {
	width:40px;
}

.download-right {
    flex: 1;
}

.download-features {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 32px;
}

.download-feature {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
}

.download-feature:last-child {
    border-bottom: none;
}

.download-feature span {
    font-size: 17px;
    color: var(--text-secondary);
}

/* 页脚 */
.footer {
    padding: 60px 0 30px;
    background-color: var(--text-primary);
    color: white;
}

.footer-language-section {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.language-title {
    font-size: 16px;
    font-weight: 600;
    color: white;
    margin-bottom: 20px;
}

.language-buttons-wrapper {
    position: relative;
}

.language-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    max-width: 800px;
    margin: 0 auto;
}

.language-btn {
    padding: 8px 16px;
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 13px;
    text-decoration: none;
    transition: var(--transition);
}

.language-btn:hover,
.language-btn.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.language-toggle-btn {
    display: none;
    margin: 15px auto 0;
    padding: 10px 24px;
    background-color: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 20px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.language-toggle-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    color: white;
}

.footer-main {
    display: flex;
    justify-content: space-between;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-developer {
    max-width: 360px;
}

.developer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.developer-title {
    font-size: 18px;
    font-weight: 600;
    color: white;
}

.developer-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.8;
}

.footer-links-container {
    display: flex;
    gap: 80px;
}

.footer-links-group {
    min-width: 120px;
}

.links-title {
    font-size: 16px;
    font-weight: 600;
    color: white;
    margin-bottom: 20px;
}

.links-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.link-item {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition);
}

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

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.copyright {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    right: 30px;
    bottom: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    box-shadow: var(--shadow-md);
}
.back-to-top img {
	width:70%;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(255, 107, 107, 0.4);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-content {
        gap: 40px;
    }

    .hero-description {
        margin: 0 auto 32px;
    }

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

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

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

    .tools-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .scenario-item,
    .scenario-item.reverse {
        flex-direction: column;
        text-align: center;
    }

    .download-content {
        flex-direction: column;
        text-align: center;
    }

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

    .footer-main {
        flex-direction: column;
        gap: 40px;
    }

    .footer-links-container {
        justify-content: space-between;
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 12px 20px;
    }
	.hero-buttons {
		flex-direction:column;
	}
	.hero-buttons .btn {
		width:70%;
		text-align: center;
		justify-content: center;
	}

    .nav-menu {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--bg-primary);
        flex-direction: column;
        padding: 10px 20px 30px 20px;
        gap: 0;
        transform: none;
        overflow-y: auto;
        height: auto;
        min-height: calc(100vh - 70px);
        max-height: calc(100vh - 70px);
    }
	
	.nav_cont {
		display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 0px;
	}

    .nav-menu.show {
        display: flex;
    }

    .nav-menu .nav-link {
        display: block;
        padding: 12px 0;
        font-size: 18px;
        text-align: left;
        flex-shrink: 0;
    }
	
	.nav-link.active::after {
		background:none;
	}

    .nav-right {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .mobile-language-selector {
        display: block;
        margin-top: 20px;
        flex-shrink: 0;
    }

    .mobile-lang-header {
        display: flex;
        justify-content: center;
        align-items: center;
        padding: 12px 0;
        font-size: 18px;
        color: var(--text-primary);
        cursor: pointer;
		background: #fef5f3;
		border-radius: 30px;
    }

    .mobile-lang-arrow {
        font-size: 12px;
        transition: transform 0.3s ease;
    }

    .mobile-lang-dropdown {
        display: none;
        flex-direction: column;
        background: var(--bg-secondary);
        border-radius: 8px;
        margin-top: 8px;
        max-height: 200px;
        overflow-y: auto;
    }

    .mobile-lang-dropdown.show {
        display: flex;
    }

    .mobile-lang-item {
        padding: 12px 16px;
        color: var(--text-secondary);
        text-decoration: none;
        font-size: 15px;
    }

    .mobile-lang-item:last-child {
        border-bottom: none;
    }

    .mobile-lang-item.active {
        color: var(--primary-color);
        font-weight: 500;
    }

    .mobile-download-btn {
        display: block;
        margin-top: 20px;
        text-align: center;
        flex-shrink: 0;
		border-radius: 30px;
		font-size:18px;
    }

    .hero {
        padding: 60px 0 40px 0;
        min-height: auto;
    }

    .scroll-indicator {
        bottom: 20px;
    }
	
	.features {
		padding:50px 0;
	}

    .mouse {
        width: 22px;
        height: 36px;
    }

    .wheel {
        height: 6px;
    }

    .scroll-arrow {
        width: 8px;
        height: 8px;
    }

    .hero-waves {
        height: 100px;
    }

    .hero-title {
        font-size: 36px;
		line-height: 1.4;
    }

    .hero-subtitle {
        font-size: 20px;
    }

    .hero-stats {
        flex-direction: row;
        gap: 24px;
		justify-content: space-between;
    }
	.stat-number {
		font-size:24px;
	}

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

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

    .tabs-nav {
        flex-wrap: wrap;
        gap: 15px;
        padding: 20px 0; 
    }

    .tab-btn {
        padding: 15px 16px;
        font-size: 18px;
		display:flex;
		font-weight: bold;
    }

    .tab-btn svg {
        width: 22px;
        height: 22px;
    }

    .tab-content-wrapper {
        flex-direction: column-reverse;
        gap: 40px;
    }

    .tab-title {
        font-size: 22px;
    }

    .tab-image svg {
        width: 100%;
        max-width: 320px;
        height: auto;
    }

    .format-conversion-content {
        flex-direction: column;
        gap: 40px;
		align-items: center;
		width:100%;
    }
	.format-left {
		width:100%;
	}
	
	.section-header {
		margin-bottom:30px;
	}

    .format-icons {
        position: relative;
        top: 0;
		background-size: 100% auto;
		align-items: end;
		justify-content: center;
		padding:0;
		margin-bottom: 30px;
		min-height: 300px;
    }

    .format-icon-item {
        width: 48px;
        height: 48px;
    }

    .format-icon-item svg {
        width: 40px;
        height: 40px;
    }

    .format-window {
        margin-top: 0;
    }

    .format-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
    }

    .format-cell {
        padding: 10px;
        font-size: 12px;
    }

    .main-card {
        flex-direction: column;
        text-align: center;
    }

    .main-card .card-icon {
        margin: 0 auto;
    }

    .card-tags {
        justify-content: center;
    }

    .format-cards-row {
        flex-direction: column;
    }

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

    .download-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .footer-links-container {
        flex-wrap: wrap;
        gap: 40px;
    }
	.features-grid {
		gap:15px;
	}
	.feature-card {
		padding:20px 15px;
	}
	.feature-desc {
		font-size:14px;
		color:#777;
	}
	.tools, .format-conversion, .scenarios, .download {
		padding:50px 0;
	}
	.scenario-item {
		gap:20px;
	}
	.download-buttons .btn {
		max-width:100%;
		justify-content: center;
	}
	.download-right {
		width:100%;
	}
	.download-content {
		gap:40px;
	}
	.footer-links-container {
		display:none;
	}
	.footer {
		padding:30px 0 20px 0;
	}
	.footer-language-section {
		margin-bottom:20px;
		padding-bottom: 20px;
	}
	.language-buttons {
		max-height: 90px;
		overflow: hidden;
		transition: max-height 0.3s ease;
	}
	.language-buttons.expanded {
		max-height: none;
	}
	.language-toggle-btn {
		display: block;
	}
	.footer-main {
		margin-bottom:20px;
	}
	.footer-bottom {
		padding-bottom: 20px;
	}
	.back-to-top {
		right:10px;
	}
	.back-to-top.show {
		opacity: 0.7;
	}
	.developer-logo {
		justify-content:center;
		align-items: center;
	}
}

@media (max-width: 480px) {

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

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