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

:root {
    --primary: #4CAF50;
    --primary-dark: #388E3C;
    --primary-light: #81C784;
    --primary-bg: #E8F5E9;
    --secondary: #2E7D32;
    --accent: #66BB6A;
    --text: #1a1a1a;
    --text-secondary: #555;
    --text-light: #888;
    --bg: #ffffff;
    --bg-alt: #f8faf9;
    --bg-dark: #1b2a1e;
    --border: #e0e0e0;
    --shadow: 0 4px 20px rgba(76, 175, 80, 0.12);
    --shadow-hover: 0 8px 30px rgba(76, 175, 80, 0.2);
    --radius: 16px;
    --radius-sm: 10px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1200px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    display: block;
}

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

ul {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

/* ============ 通用组件 ============ */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 15px;
    transition: var(--transition);
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(76, 175, 80, 0.5);
}

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

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

.btn-large {
    padding: 16px 36px;
    font-size: 17px;
}

.btn-xl {
    padding: 20px 50px;
    font-size: 19px;
}

.btn-download {
    background: linear-gradient(135deg, #43A047, #2E7D32);
    color: #fff;
    box-shadow: 0 6px 30px rgba(67, 160, 71, 0.4);
}

.btn-download:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 10px 40px rgba(67, 160, 71, 0.6);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    padding: 6px 18px;
    background: var(--primary-bg);
    color: var(--primary-dark);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-title {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--text), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-desc {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ============ 导航栏 ============ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: var(--transition);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    border-bottom-color: var(--border);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-img {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: var(--primary-bg);
}

.logo-img-large {
    width: 80px;
    height: 80px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.2);
}

.logo-text {
    font-size: 24px;
    font-weight: 800;
    color: var(--primary-dark);
    letter-spacing: 1px;
}

.nav-menu ul {
    display: flex;
    gap: 8px;
    align-items: center;
}

.nav-link {
    display: block;
    padding: 8px 18px;
    border-radius: 50px;
    color: var(--text);
    font-weight: 500;
    font-size: 15px;
    transition: var(--transition);
}

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

.nav-link.btn-nav.active,
.nav-link.btn-nav:hover {
    color: #fff;
}

.nav-link.btn-nav {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    padding: 10px 24px;
    box-shadow: 0 3px 12px rgba(76, 175, 80, 0.3);
}

.nav-link.btn-nav:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(76, 175, 80, 0.45);
    color: #fff;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 3px;
    background: var(--primary-dark);
    border-radius: 2px;
    transition: var(--transition);
}

/* ============ Hero 首屏 ============ */
.hero {
    position: relative;
    padding: 140px 0 80px;
    overflow: hidden;
    background: linear-gradient(180deg, #f0f9f1 0%, #ffffff 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
    z-index: 0;
}

.bg-circle {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.35;
}

.bg-circle-1 {
    width: 400px;
    height: 400px;
    background: var(--primary-light);
    top: -100px;
    left: -100px;
    animation: float 8s ease-in-out infinite;
}

.bg-circle-2 {
    width: 350px;
    height: 350px;
    background: var(--accent);
    top: 20%;
    right: -80px;
    animation: float 10s ease-in-out infinite reverse;
}

.bg-circle-3 {
    width: 300px;
    height: 300px;
    background: #A5D6A7;
    bottom: -80px;
    left: 30%;
    animation: float 12s ease-in-out infinite;
}

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

.hero-container {
    position: relative;
    z-index: 1;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: rgba(76, 175, 80, 0.12);
    border: 1px solid rgba(76, 175, 80, 0.25);
    border-radius: 50px;
    font-size: 14px;
    color: var(--primary-dark);
    font-weight: 600;
    margin-bottom: 24px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.3); }
}

.hero-title {
    font-size: 52px;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--text);
}

.highlight {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 36px;
    line-height: 1.8;
}

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

.hero-stats {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-bottom: 28px;
    padding: 20px 0;
}

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

.stat-number {
    font-size: 24px;
    font-weight: 800;
    color: var(--primary-dark);
}

.stat-label {
    font-size: 13px;
    color: var(--text-light);
}

.stat-divider {
    width: 1px;
    height: 30px;
    background: var(--border);
}

.version-info {
    display: flex;
    gap: 20px;
    padding: 16px 20px;
    background: rgba(76, 175, 80, 0.06);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(76, 175, 80, 0.15);
}

.version-item {
    display: flex;
    flex-direction: column;
}

.version-label {
    font-size: 12px;
    color: var(--text-light);
}

.version-value {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary-dark);
}

/* ============ 手机截图展示 ============ */
.hero-screenshots {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.screenshot-wrapper {
    position: relative;
    width: 100%;
    height: 600px;
}

.phone-frame {
    position: absolute;
    width: 220px;
    height: 450px;
    background: #1a1a1a;
    border-radius: 36px;
    padding: 10px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
    overflow: hidden;
    transition: var(--transition);
}

.phone-notch {
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 20px;
    background: #1a1a1a;
    border-radius: 20px;
    z-index: 2;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: #f5f7f5;
    border-radius: 28px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.screen-content {
    padding: 36px 14px 14px;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.chat-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-bottom: 10px;
    border-bottom: 1px solid #e8e8e8;
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
}

.chat-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
}

.avatar-1 { background: linear-gradient(135deg, #FFB74D, #FF8A65); }
.avatar-2 { background: linear-gradient(135deg, #BA68C8, #9575CD); }
.avatar-3 { background: linear-gradient(135deg, #4FC3F7, #29B6F6); }

.online-dot {
    width: 7px;
    height: 7px;
    background: var(--primary);
    border-radius: 50%;
    margin-left: auto;
    animation: pulse 1.8s infinite;
}

.chat-body {
    flex: 1;
    padding-top: 10px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    overflow: hidden;
}

.msg {
    max-width: 80%;
    padding: 8px 12px;
    border-radius: 16px;
    font-size: 11px;
    line-height: 1.4;
    animation: msgIn 0.5s ease forwards;
    opacity: 0;
    transform: translateY(10px);
}

.msg-left {
    background: #fff;
    color: var(--text);
    border-bottom-left-radius: 4px;
    align-self: flex-start;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.msg-right {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    border-bottom-right-radius: 4px;
    align-self: flex-end;
}

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

/* 三台手机位置 */
.phone-1 {
    left: 50%;
    top: 10%;
    transform: translateX(-50%) rotate(-3deg);
    z-index: 2;
    animation: floatPhone 6s ease-in-out infinite;
}

.phone-2 {
    left: 10%;
    top: 20%;
    transform: rotate(-8deg);
    z-index: 1;
    opacity: 0.85;
    animation: floatPhone 7s ease-in-out infinite 0.5s;
}

.phone-3 {
    right: 10%;
    top: 20%;
    transform: rotate(8deg);
    z-index: 1;
    opacity: 0.85;
    animation: floatPhone 8s ease-in-out infinite 1s;
}

@keyframes floatPhone {
    0%, 100% { transform: translateY(0) rotate(var(--rot, -3deg)); }
    50% { transform: translateY(-15px) rotate(var(--rot, -3deg)); }
}

.phone-1 { --rot: -3deg; }
.phone-2 { --rot: -8deg; }
.phone-3 { --rot: 8deg; }

/* 手机截图卡片 */
.phone-frame:hover {
    transform: translateY(-10px) rotate(0deg) scale(1.05);
    z-index: 10;
    opacity: 1;
}

.phone-1:hover { transform: translateX(-50%) translateY(-10px) scale(1.05); }

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

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

.feature-card {
    background: #fff;
    padding: 40px 32px;
    border-radius: var(--radius);
    text-align: center;
    transition: var(--transition);
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

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

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 70px;
    height: 70px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: #fff;
    transition: var(--transition);
}

.feature-icon svg {
    width: 32px;
    height: 32px;
}

.icon-1 { background: linear-gradient(135deg, #4CAF50, #388E3C); }
.icon-2 { background: linear-gradient(135deg, #66BB6A, #43A047); }
.icon-3 { background: linear-gradient(135deg, #81C784, #4CAF50); }
.icon-4 { background: linear-gradient(135deg, #43A047, #2E7D32); }
.icon-5 { background: linear-gradient(135deg, #388E3C, #1B5E20); }
.icon-6 { background: linear-gradient(135deg, #66BB6A, #388E3C); }

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(-5deg);
}

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

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

/* ============ 截图展示区 ============ */
.screenshots {
    padding: 100px 0;
    background: #fff;
}

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

.showcase-item {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.showcase-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.showcase-card {
    text-align: center;
}

.showcase-phone {
    width: 200px;
    height: 400px;
    background: #1a1a1a;
    border-radius: 32px;
    padding: 10px;
    margin: 0 auto 24px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
}

.showcase-phone:hover {
    transform: translateY(-8px) rotate(2deg);
    box-shadow: 0 20px 50px rgba(76, 175, 80, 0.25);
}

.mini-notch {
    width: 60px;
    height: 16px;
    background: #1a1a1a;
    border-radius: 16px;
    margin: 4px auto;
}

.mini-screen {
    width: 100%;
    height: calc(100% - 24px);
    background: #f5f7f5;
    border-radius: 24px;
    padding: 12px 10px;
    overflow: hidden;
}

.mini-chat {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.mini-msg {
    max-width: 85%;
    padding: 6px 10px;
    border-radius: 12px;
    font-size: 10px;
    line-height: 1.4;
}

.mini-msg.left {
    background: #fff;
    color: var(--text);
    align-self: flex-start;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

.mini-msg.right {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    align-self: flex-end;
}

.showcase-label h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text);
}

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

/* ============ 用户评价 ============ */
.reviews {
    padding: 100px 0;
    background: var(--bg-alt);
}

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

.review-card {
    background: #fff;
    padding: 32px;
    border-radius: var(--radius);
    transition: var(--transition);
    border: 1px solid var(--border);
}

.review-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-light);
}

.review-stars {
    color: #FFB300;
    font-size: 18px;
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.review-text {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
    font-style: italic;
}

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

.author-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    flex-shrink: 0;
}

.avatar-a { background: linear-gradient(135deg, #FFCC80, #FFB74D); }
.avatar-b { background: linear-gradient(135deg, #CE93D8, #BA68C8); }
.avatar-c { background: linear-gradient(135deg, #80DEEA, #4DD0E1); }
.avatar-d { background: linear-gradient(135deg, #A5D6A7, #81C784); }
.avatar-e { background: linear-gradient(135deg, #FFAB91, #FF8A65); }
.avatar-f { background: linear-gradient(135deg, #9FA8DA, #7986CB); }

.author-info {
    display: flex;
    flex-direction: column;
}

.author-name {
    font-weight: 700;
    color: var(--text);
    font-size: 15px;
}

.author-meta {
    font-size: 12px;
    color: var(--text-light);
}

/* ============ FAQ ============ */
.faq {
    padding: 100px 0;
    background: #fff;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--border);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 0;
    font-size: 17px;
    font-weight: 600;
    color: var(--text);
    text-align: left;
    background: none;
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--primary);
}

.faq-icon {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-bg);
    color: var(--primary-dark);
    border-radius: 50%;
    font-size: 18px;
    font-weight: 300;
    transition: transform 0.3s ease;
    flex-shrink: 0;
    margin-left: 16px;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
    background: var(--primary);
    color: #fff;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding-bottom: 24px;
}

.faq-answer p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ============ 下载区 ============ */
.download {
    position: relative;
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary) 50%, #1B5E20 100%);
    overflow: hidden;
}

.download-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.download-circle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
}

.download-circle-1 {
    width: 400px;
    height: 400px;
    top: -150px;
    right: -100px;
}

.download-circle-2 {
    width: 300px;
    height: 300px;
    bottom: -100px;
    left: -80px;
}

.download-card {
    position: relative;
    z-index: 1;
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    padding: 60px 40px;
}

.download-logo {
    margin-bottom: 28px;
    display: flex;
    justify-content: center;
}

.download-title {
    font-size: 42px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
}

.download-desc {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 32px;
    line-height: 1.7;
}

.download-version {
    display: inline-flex;
    align-items: center;
    gap: 16px;
    padding: 14px 28px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: 50px;
    margin-bottom: 36px;
    backdrop-filter: blur(10px);
}

.dv-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.dv-label {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.7);
}

.dv-value {
    font-size: 17px;
    font-weight: 700;
    color: #fff;
}

.dv-sep {
    color: rgba(255, 255, 255, 0.3);
}

.download-tip {
    margin-top: 24px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

/* ============ 页脚 ============ */
.footer {
    background: var(--bg-dark);
    padding: 60px 0 30px;
    color: #aaa;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

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

.footer-brand-name {
    font-size: 24px;
    font-weight: 800;
    color: #fff;
}

.footer-desc {
    font-size: 15px;
    line-height: 1.7;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.footer-col h4 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 18px;
    font-weight: 700;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    font-size: 14px;
    color: #aaa;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 13px;
    color: #777;
}

/* ============ 返回顶部 ============ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(76, 175, 80, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}

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

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 25px rgba(76, 175, 80, 0.5);
}

/* ============ 响应式设计 ============ */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

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

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

    .version-info {
        justify-content: center;
    }

    .hero-screenshots {
        order: -1;
        max-width: 400px;
        margin: 0 auto;
    }

    .screenshot-wrapper {
        height: 500px;
    }

    .phone-frame {
        width: 180px;
        height: 370px;
    }

    .phone-1 { left: 50%; top: 0; }
    .phone-2 { left: 5%; top: 10%; }
    .phone-3 { right: 5%; top: 10%; }

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

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

@media (max-width: 768px) {
    .hero {
        padding: 120px 0 60px;
    }

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

    .hero-subtitle {
        font-size: 16px;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: #fff;
        padding: 24px;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        transform: translateY(-150%);
        transition: transform 0.3s ease;
        border-radius: 0 0 var(--radius) var(--radius);
    }

    .nav-menu.active {
        transform: translateY(0);
    }

    .nav-menu ul {
        flex-direction: column;
        gap: 8px;
    }

    .nav-link {
        padding: 12px 18px;
        width: 100%;
        text-align: center;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

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

    .nav-toggle.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .features,
    .screenshots,
    .reviews,
    .faq {
        padding: 70px 0;
    }

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

    .features-grid,
    .showcase-grid,
    .reviews-grid {
        grid-template-columns: 1fr;
    }

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

    .download-title {
        font-size: 30px;
    }

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

    .btn-xl {
        padding: 16px 36px;
        font-size: 17px;
    }

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

    .stat-divider {
        display: none;
    }

    .screenshot-wrapper {
        height: 420px;
    }

    .phone-frame {
        width: 140px;
        height: 300px;
    }

    .phone-1 {
        left: 50%;
        top: 0;
        transform: translateX(-50%) rotate(-3deg);
    }

    .phone-2 {
        left: 0;
        top: 30%;
        transform: rotate(-8deg);
    }

    .phone-3 {
        right: 0;
        top: 30%;
        transform: rotate(8deg);
    }

    .showcase-phone {
        width: 160px;
        height: 320px;
    }

    .mini-msg {
        font-size: 9px;
        padding: 4px 8px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 30px;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero-buttons .btn {
        width: 100%;
    }

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

    .feature-card {
        padding: 28px 24px;
    }

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

    .download-card {
        padding: 40px 20px;
    }

    .download-title {
        font-size: 26px;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
    }
}