/* ================================
   Notepad++ 官网 - 全局样式
   ================================ */
:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #93c5fd;
    --secondary: #10b981;
    --accent: #90e0ef;
    --dark: #0f172a;
    --dark-2: #1e293b;
    --dark-3: #334155;
    --text: #475569;
    --text-light: #94a3b8;
    --text-white: #f1f5f9;
    --bg: #ffffff;
    --bg-gray: #f8fafc;
    --bg-dark: #020617;
    --border: #e2e8f0;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.1);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: var(--text);
    line-height: 1.7;
    background: var(--bg);
    overflow-x: hidden;
}

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

img {
    max-width: 100%;
}

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

/* ================================
   按钮
   ================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 15px rgba(59,130,246,0.4);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59,130,246,0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--text-white);
    border: 2px solid rgba(255,255,255,0.3);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.6);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

.btn-lg {
    padding: 16px 36px;
    font-size: 18px;
}

/* ================================
   导航栏
   ================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow);
    padding: 10px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 700;
    color: #fff;
}

.navbar.scrolled .logo {
    color: var(--dark);
}

.logo i {
    font-size: 28px;
    color: var(--primary);
}

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

.nav-links a {
    font-size: 15px;
    font-weight: 500;
    color: rgba(255,255,255,0.85);
    position: relative;
    padding: 4px 0;
}

.navbar.scrolled .nav-links a {
    color: var(--text);
}

.nav-links a.active,
.nav-links a:hover {
    color: #fff;
}

.navbar.scrolled .nav-links a.active,
.navbar.scrolled .nav-links a:hover {
    color: var(--primary);
}

.nav-links a.active::after,
.nav-links a:hover::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
    border-radius: 1px;
}

.nav-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 20px;
    background: var(--primary);
    color: #fff !important;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
}

.nav-download-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 24px;
    cursor: pointer;
}

.navbar.scrolled .mobile-toggle {
    color: var(--dark);
}

/* ================================
   Hero 区域
   ================================ */
.hero {
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--dark) 50%, var(--dark-2) 100%);
    padding: 160px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59,130,246,0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(16,185,129,0.1) 0%, transparent 70%);
    border-radius: 50%;
}

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

.hero-content {
    flex: 1;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(59,130,246,0.2);
    color: var(--primary-light);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
    border: 1px solid rgba(59,130,246,0.3);
}

.hero h1 {
    font-size: 56px;
    font-weight: 800;
    color: #fff;
    line-height: 1.1;
    margin-bottom: 8px;
}

.hero-subtitle {
    font-size: 22px;
    color: var(--primary-light);
    font-weight: 500;
    margin-bottom: 20px;
}

.hero-desc {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 32px;
    max-width: 520px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 48px;
}

.stat {
    text-align: center;
}

.stat-num {
    display: block;
    font-size: 32px;
    font-weight: 800;
    color: #fff;
}

.stat-label {
    font-size: 14px;
    color: var(--text-light);
}

/* 编辑器模拟 */
.hero-image {
    flex: 1;
    max-width: 560px;
}

.editor-mockup {
    background: #1e1e2e;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
    border: 1px solid rgba(255,255,255,0.1);
}

.mockup-titlebar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: #181825;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}
.dot.red { background: #f38ba8; }
.dot.yellow { background: #f9e2af; }
.dot.green { background: #a6e3a1; }

.mockup-title {
    margin-left: 12px;
    font-size: 13px;
    color: #6c7086;
}

.mockup-menubar {
    display: flex;
    gap: 20px;
    padding: 6px 16px;
    background: #1e1e2e;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    font-size: 13px;
    color: #a6adc8;
}

.mockup-body {
    display: flex;
    padding: 16px 0;
    background: #1e1e2e;
}

.line-numbers {
    display: flex;
    flex-direction: column;
    padding: 0 16px 0 20px;
    gap: 2px;
    color: #45475a;
    font-size: 14px;
    font-family: 'Fira Code', 'Cascadia Code', Consolas, monospace;
    text-align: right;
    user-select: none;
    line-height: 1.65;
}

.code-content {
    flex: 1;
    font-family: 'Fira Code', 'Cascadia Code', Consolas, monospace;
    font-size: 14px;
    line-height: 1.65;
    color: #cdd6f4;
}

.code-content .kw { color: #cba6f7; }
.code-content .cls { color: #89b4fa; }
.code-content .fn { color: #89dceb; }
.code-content .str { color: #a6e3a1; }
.code-content .num { color: #fab387; }
.code-content .param { color: #f9e2af; }
.code-content .var { color: #cdd6f4; }
.code-content .blank-line { height: 1.65em; }

.mockup-statusbar {
    display: flex;
    gap: 24px;
    padding: 6px 16px;
    background: #181825;
    border-top: 1px solid rgba(255,255,255,0.05);
    font-size: 12px;
    color: #6c7086;
}

/* ================================
   通用 Section 样式
   ================================ */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    padding: 4px 14px;
    background: rgba(59,130,246,0.1);
    color: var(--primary);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 16px;
}

.section-desc {
    font-size: 16px;
    color: var(--text);
    max-width: 560px;
    margin: 0 auto;
}

.section-cta {
    text-align: center;
    margin-top: 48px;
}

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

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

.feature-card {
    background: #fff;
    padding: 36px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border);
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(59,130,246,0.1);
    color: var(--primary);
    border-radius: 14px;
    font-size: 24px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 15px;
    color: var(--text);
    line-height: 1.7;
}

/* ================================
   为什么选择
   ================================ */
.why-section {
    padding: 100px 0;
    background: #fff;
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.why-card {
    text-align: center;
    padding: 40px 24px;
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.why-card:hover {
    background: var(--bg-gray);
}

.why-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(59,130,246,0.1), rgba(16,185,129,0.1));
    color: var(--primary);
    border-radius: 16px;
    font-size: 28px;
    margin: 0 auto 20px;
}

.why-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 10px;
}

.why-card p {
    font-size: 14px;
    color: var(--text);
    line-height: 1.7;
}

/* ================================
   最新版本
   ================================ */
.version-section {
    padding: 100px 0;
    background: var(--bg-gray);
}

.version-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #fff;
    padding: 48px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
    gap: 48px;
}

.version-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(16,185,129,0.1);
    color: var(--secondary);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 12px;
}

.version-info h3 {
    font-size: 28px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 8px;
}

.version-date {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 20px;
}

.version-date i {
    margin-right: 6px;
}

.version-changes {
    list-style: none;
}

.version-changes li {
    padding: 6px 0;
    font-size: 15px;
    color: var(--text);
}

.version-changes li i {
    color: var(--secondary);
    margin-right: 10px;
    font-size: 13px;
}

.version-action {
    text-align: center;
    flex-shrink: 0;
}

.version-note {
    margin-top: 16px;
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.8;
}

/* ================================
   快速入门
   ================================ */
.quickstart-section {
    padding: 100px 0;
    background: #fff;
}

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

.steps-grid::before {
    content: '';
    position: absolute;
    top: 50px;
    left: 16.66%;
    right: 16.66%;
    height: 2px;
    background: var(--border);
    z-index: 0;
}

.step-card {
    text-align: center;
    padding: 40px 28px;
    position: relative;
    z-index: 1;
}

.step-number {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    font-size: 14px;
    font-weight: 700;
    margin: 0 auto 20px;
    box-shadow: 0 0 0 8px rgba(59,130,246,0.1);
}

.step-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-gray);
    color: var(--primary);
    border-radius: 14px;
    font-size: 24px;
    margin: 0 auto 20px;
}

.step-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 10px;
}

.step-card p {
    font-size: 15px;
    color: var(--text);
    line-height: 1.7;
}

/* ================================
   页脚
   ================================ */
.footer {
    background: var(--dark);
    padding: 60px 0 0;
    color: var(--text-light);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid var(--dark-3);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
}

.footer-logo i {
    color: var(--primary);
}

.footer-col p {
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--dark-3);
    color: var(--text-light);
    border-radius: 10px;
    font-size: 18px;
}

.footer-social a:hover {
    background: var(--primary);
    color: #fff;
}

.footer-col h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

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

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

.footer-col ul a {
    font-size: 14px;
    color: var(--text-light);
}

.footer-col ul a:hover {
    color: var(--primary-light);
}

.footer-bottom {
    text-align: center;
    padding: 24px 0;
    font-size: 14px;
}

.footer-bottom a {
    color: var(--primary-light);
}

/* ================================
   下载页面
   ================================ */
.download-hero {
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--dark) 100%);
    padding: 140px 0 80px;
    text-align: center;
}

.download-hero h1 {
    font-size: 44px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 12px;
}

.download-hero p {
    font-size: 18px;
    color: var(--text-light);
}

.download-section {
    padding: 80px 0;
}

.download-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
    margin-bottom: 60px;
}

.download-card {
    background: #fff;
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 2px solid var(--border);
    transition: var(--transition);
}

.download-card.recommended {
    border-color: var(--primary);
    position: relative;
}

.download-card.recommended::before {
    content: '推荐';
    position: absolute;
    top: -12px;
    right: 24px;
    padding: 4px 16px;
    background: var(--primary);
    color: #fff;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
}

.download-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.download-card h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}

.download-card .card-desc {
    font-size: 15px;
    color: var(--text);
    margin-bottom: 24px;
}

.download-card .card-info {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
    font-size: 14px;
    color: var(--text-light);
}

.card-info span i {
    margin-right: 6px;
    color: var(--primary);
}

.download-card .btn {
    width: 100%;
    justify-content: center;
}

.system-requirements {
    background: var(--bg-gray);
    padding: 60px 0;
}

.requirements-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 48px;
}

.requirement h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 16px;
}

.requirement ul {
    list-style: none;
}

.requirement li {
    padding: 8px 0;
    font-size: 15px;
    color: var(--text);
    border-bottom: 1px solid var(--border);
}

.requirement li:last-child {
    border: none;
}

.requirement li i {
    color: var(--secondary);
    margin-right: 10px;
}

.version-history {
    padding: 80px 0;
    background: #fff;
}

.history-list {
    max-width: 800px;
    margin: 0 auto;
}

.history-item {
    display: flex;
    align-items: flex-start;
    gap: 24px;
    padding: 28px 0;
    border-bottom: 1px solid var(--border);
}

.history-item:last-child {
    border: none;
}

.history-dot {
    width: 12px;
    height: 12px;
    background: var(--primary);
    border-radius: 50%;
    margin-top: 6px;
    flex-shrink: 0;
    box-shadow: 0 0 0 4px rgba(59,130,246,0.2);
}

.history-item h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 4px;
}

.history-item .date {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 8px;
}

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

/* ================================
   功能特性页面
   ================================ */
.features-hero {
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--dark) 100%);
    padding: 140px 0 80px;
    text-align: center;
}

.features-hero h1 {
    font-size: 44px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 12px;
}

.features-hero p {
    font-size: 18px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

.features-detail {
    padding: 80px 0;
}

.feature-detail-card {
    display: flex;
    align-items: center;
    gap: 60px;
    padding: 60px 0;
    border-bottom: 1px solid var(--border);
}

.feature-detail-card:nth-child(even) {
    flex-direction: row-reverse;
}

.feature-detail-text {
    flex: 1;
}

.feature-detail-text .tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(59,130,246,0.1);
    color: var(--primary);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
}

.feature-detail-text h3 {
    font-size: 28px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 16px;
}

.feature-detail-text p {
    font-size: 15px;
    color: var(--text);
    line-height: 1.8;
    margin-bottom: 20px;
}

.feature-detail-text ul {
    list-style: none;
}

.feature-detail-text ul li {
    padding: 6px 0;
    font-size: 14px;
    color: var(--text);
}

.feature-detail-text ul li i {
    color: var(--secondary);
    margin-right: 10px;
}

.feature-detail-visual {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.visual-box {
    width: 100%;
    max-width: 480px;
    padding: 40px;
    background: var(--bg-gray);
    border-radius: var(--radius-lg);
    text-align: center;
}

.visual-box i {
    font-size: 64px;
    color: var(--primary);
    margin-bottom: 20px;
}

.visual-box h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}

.visual-box p {
    font-size: 14px;
    color: var(--text);
}

/* ================================
   关于页面
   ================================ */
.about-hero {
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--dark) 100%);
    padding: 140px 0 80px;
    text-align: center;
}

.about-hero h1 {
    font-size: 44px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 12px;
}

.about-hero p {
    font-size: 18px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

.about-section {
    padding: 80px 0;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: 16px;
    color: var(--text);
    line-height: 2;
}

.about-content h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--dark);
    margin: 48px 0 16px;
}

.about-content h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--dark);
    margin: 32px 0 12px;
}

.about-content p {
    margin-bottom: 16px;
}

.about-content ul {
    list-style: none;
    margin-bottom: 16px;
}

.about-content ul li {
    padding: 6px 0;
}

.about-content ul li i {
    color: var(--secondary);
    margin-right: 10px;
}

.timeline-section {
    padding: 80px 0;
    background: var(--bg-gray);
}

.timeline {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
}

.timeline-item {
    position: relative;
    padding-bottom: 36px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -31px;
    top: 6px;
    width: 12px;
    height: 12px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(59,130,246,0.2);
}

.timeline-item .year {
    font-size: 14px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.timeline-item h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 6px;
}

.timeline-item p {
    font-size: 14px;
    color: var(--text);
}

.team-section {
    padding: 80px 0;
    background: #fff;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    max-width: 900px;
    margin: 0 auto;
}

.team-card {
    text-align: center;
    padding: 40px 24px;
    background: var(--bg-gray);
    border-radius: var(--radius-lg);
}

.team-avatar {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 32px;
}

.team-card h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 4px;
}

.team-card .role {
    font-size: 14px;
    color: var(--primary);
    font-weight: 500;
    margin-bottom: 8px;
}

.team-card p {
    font-size: 13px;
    color: var(--text);
}

/* ================================
   响应式设计
   ================================ */
@media (max-width: 1024px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    .hero-desc {
        margin: 0 auto 32px;
    }
    .hero-buttons {
        justify-content: center;
    }
    .hero-stats {
        justify-content: center;
    }
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .why-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .version-card {
        flex-direction: column;
        text-align: center;
    }
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .feature-detail-card,
    .feature-detail-card:nth-child(even) {
        flex-direction: column;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: block;
    }
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(15,23,42,0.98);
        flex-direction: column;
        padding: 20px 24px;
        gap: 16px;
    }
    .nav-links.active {
        display: flex;
    }
    .nav-download-btn {
        display: none;
    }
    .hero {
        padding: 120px 0 60px;
    }
    .hero h1 {
        font-size: 36px;
    }
    .hero-subtitle {
        font-size: 18px;
    }
    .hero-stats {
        gap: 24px;
    }
    .stat-num {
        font-size: 24px;
    }
    .section-header h2 {
        font-size: 28px;
    }
    .features-grid,
    .why-grid,
    .steps-grid,
    .download-cards,
    .requirements-grid {
        grid-template-columns: 1fr;
    }
    .steps-grid::before {
        display: none;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .feature-detail-card {
        padding: 36px 0;
    }
    .team-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }
    .download-hero h1,
    .features-hero h1,
    .about-hero h1 {
        font-size: 32px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 30px;
    }
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    .btn {
        padding: 10px 24px;
        font-size: 14px;
    }
}