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

body {
    font-family: 'Noto Sans SC', system-ui, -apple-system, sans-serif;
    color: #2b3245;
    line-height: 1.6;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e9f2 100%);
    min-height: 100vh;
}

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

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.5);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: 16px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Noto Serif SC', serif;
    font-size: 1.25rem;
    font-weight: 600;
    color: #1d4ed8;
    flex-shrink: 0;
    white-space: nowrap;
}

.logo {
    width: 32px;
    height: 32px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.nav-links {
    display: none;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: #5b6478;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: #1d4ed8;
}

.download-btn {
    display: none;
    padding: 8px 20px;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
    text-decoration: none;
    border-radius: 20px;
    font-weight: 500;
    font-size: 0.875rem;
    transition: transform 0.2s, box-shadow 0.2s;
    white-space: nowrap;
    flex-shrink: 0;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.3);
}

.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 50%, #60a5fa 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 20%;
    left: 10%;
    width: 288px;
    height: 288px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    filter: blur(60px);
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 20%;
    right: 10%;
    width: 384px;
    height: 384px;
    background: rgba(96, 165, 250, 0.1);
    border-radius: 50%;
    filter: blur(80px);
}

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

.hero-content {
    text-align: center;
    color: white;
    max-width: 500px;
    width: 100%;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    margin-bottom: 24px;
    font-size: 0.875rem;
    white-space: nowrap;
}

.badge svg {
    color: #fbbf24;
}

.hero-content h1 {
    font-family: 'Noto Serif SC', serif;
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.2;
}

.hero-content p:first-of-type {
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.description {
    font-size: 1rem;
    opacity: 0.8;
    margin-bottom: 32px;
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 48px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    background: white;
    color: #1d4ed8;
    text-decoration: none;
    border-radius: 28px;
    font-weight: 600;
    font-size: 0.9375rem;
    transition: transform 0.2s, box-shadow 0.2s;
    white-space: nowrap;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(255, 255, 255, 0.3);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    color: white;
    text-decoration: none;
    border-radius: 28px;
    font-weight: 500;
    font-size: 0.9375rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: background 0.2s, transform 0.2s;
    white-space: nowrap;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.stats {
    display: flex;
    gap: 48px;
    justify-content: center;
}

.stat {
    text-align: center;
}

.stat .number {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.stat .label {
    font-size: 0.875rem;
    opacity: 0.7;
}

.hero-image {
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
}

@media (min-width: 900px) {
    .hero-image {
        max-width: 380px;
        margin: 0;
        flex-shrink: 0;
    }
}

.phone-mockup {
    background: #1a1f2e;
    border-radius: 36px;
    padding: 16px;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

@media (min-width: 900px) {
    .phone-mockup {
        border-radius: 48px;
        padding: 24px;
        box-shadow: 0 32px 80px rgba(0, 0, 0, 0.4);
    }
}

.phone-header {
    height: 24px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 12px;
}

.camera {
    width: 12px;
    height: 12px;
    background: #333;
    border-radius: 50%;
}

.phone-screen {
    background: #f5f7fa;
    border-radius: 24px;
    padding: 16px;
    min-height: 400px;
}

@media (min-width: 900px) {
    .phone-screen {
        border-radius: 32px;
        padding: 24px;
        min-height: 480px;
    }
}

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.app-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.25rem;
    font-weight: 600;
    color: #2b3245;
}

.app-date {
    font-size: 0.75rem;
    color: #5b6478;
}

.progress-ring {
    position: relative;
    width: 160px;
    height: 160px;
    margin: 0 auto 20px;
}

.progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.5rem;
    font-weight: 700;
    color: #3b82f6;
}

@media (min-width: 900px) {
    .progress-ring {
        width: 192px;
        height: 192px;
        margin: 0 auto 24px;
    }
    
    .progress-text {
        font-size: 1.75rem;
    }
}

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

.task-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 10px;
    font-size: 0.8125rem;
    color: #2b3245;
}

@media (min-width: 900px) {
    .task-item {
        padding: 12px;
        border-radius: 12px;
        font-size: 0.875rem;
    }
}

.task-item.done {
    background: rgba(239, 246, 255, 0.8);
}

.task-item.done span {
    text-decoration: line-through;
    color: #5b6478;
}

.task-check {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid #cdd5e6;
    flex-shrink: 0;
}

.task-item.done .task-check {
    background: #3b82f6;
    border-color: #3b82f6;
    display: flex;
    align-items: center;
    justify-content: center;
}

.task-item.done .task-check::after {
    content: '';
    width: 8px;
    height: 8px;
    background: white;
    border-radius: 50%;
}

.features {
    padding: 80px 0;
    background: white;
}

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(59, 130, 246, 0.1);
    color: #1d4ed8;
    border-radius: 16px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 12px;
}

.section-header h2 {
    font-family: 'Noto Serif SC', serif;
    font-size: 2rem;
    font-weight: 600;
    color: #1a1f2e;
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.feature-card {
    background: #f5f7fa;
    padding: 32px;
    border-radius: 20px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    overflow: hidden;
}

.feature-icon.blue { background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%); }
.feature-icon.purple { background: linear-gradient(135deg, #8b5cf6 0%, #6d28d9 100%); }
.feature-icon.amber { background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%); }
.feature-icon.emerald { background: linear-gradient(135deg, #10b981 0%, #059669 100%); }

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: #1a1f2e;
}

.feature-card p {
    font-size: 0.9375rem;
    color: #5b6478;
    line-height: 1.6;
}

.screenshots {
    padding: 80px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e9f2 100%);
}

.screenshots-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.screenshot-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.screenshot-header {
    padding: 16px 24px;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
    font-weight: 600;
    font-size: 0.875rem;
}

.screenshot-content {
    padding: 24px;
}

.preview-hero {
    text-align: center;
    margin-bottom: 20px;
}

.preview-hero span {
    font-size: 0.875rem;
    color: #5b6478;
    display: block;
    margin-bottom: 12px;
}

.mini-ring {
    position: relative;
    width: 120px;
    height: 120px;
    margin: 0 auto;
}

.mini-ring svg {
    transform: rotate(-90deg);
}

.mini-ring span {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.25rem;
    font-weight: 700;
    color: #3b82f6;
}

.preview-tasks {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.p-task {
    height: 32px;
    background: #e4e9f2;
    border-radius: 8px;
}

.p-task.done {
    background: rgba(59, 130, 246, 0.15);
    border-left: 4px solid #3b82f6;
}

.week-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
    margin-bottom: 20px;
}

.week-day {
    height: 48px;
    background: #f5f7fa;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 500;
    color: #5b6478;
}

.week-day.active {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
}

.week-progress {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.progress-bar {
    height: 8px;
    background: #e4e9f2;
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #3b82f6 0%, #1d4ed8 100%);
    border-radius: 4px;
}

.stats-overview {
    display: flex;
    gap: 24px;
    margin-bottom: 20px;
}

.stat-item {
    flex: 1;
    text-align: center;
    padding: 16px;
    background: #f5f7fa;
    border-radius: 12px;
}

.stat-num {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    color: #1d4ed8;
}

.stat-label {
    font-size: 0.75rem;
    color: #5b6478;
}

.chart-preview {
    height: 80px;
}

.testimonials {
    padding: 80px 0;
    background: white;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.testimonial-card {
    background: #f5f7fa;
    padding: 28px;
    border-radius: 20px;
}

.avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-family: 'Noto Serif SC', serif;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.user-info {
    display: flex;
    flex-direction: column;
    margin-bottom: 12px;
}

.user-info .name {
    font-weight: 600;
    color: #1a1f2e;
}

.user-info .role {
    font-size: 0.875rem;
    color: #5b6478;
}

.testimonial-card p {
    font-size: 0.9375rem;
    color: #5b6478;
    line-height: 1.7;
    font-style: italic;
}

.download {
    padding: 80px 0;
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
}

.download-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 32px;
    padding: 48px 32px;
    text-align: center;
    color: white;
}

.download-card h2 {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.download-card p {
    font-size: 1rem;
    opacity: 0.8;
    margin-bottom: 32px;
}

.download-buttons {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    padding: 16px 32px;
    background: white;
    color: #1d4ed8;
    text-decoration: none;
    border-radius: 28px;
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
    white-space: nowrap;
    min-width: 240px;
    justify-content: center;
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(255, 255, 255, 0.3);
}

.btn-download svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.download-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
}

.download-title {
    font-size: 1rem;
    font-weight: 600;
}

.download-subtitle {
    font-size: 0.875rem;
    opacity: 0.7;
}

.download-card .note {
    font-size: 0.875rem;
    opacity: 0.6;
    margin-top: 20px;
}

.footer {
    padding: 48px 0;
    background: #1a1f2e;
    color: rgba(255, 255, 255, 0.6);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Noto Serif SC', serif;
    font-size: 1.125rem;
    font-weight: 600;
    color: white;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: white;
}

.copyright {
    font-size: 0.8125rem;
    opacity: 0.5;
}

.feature-card, .testimonial-card, .screenshot-card {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.feature-card.animate-fade-in,
.testimonial-card.animate-fade-in,
.screenshot-card.animate-fade-in {
    opacity: 1;
    transform: translateY(0);
}

@media (min-width: 640px) {
    .hero-content h1 {
        font-size: 4rem;
    }
    
    .hero-content p:first-of-type {
        font-size: 1.75rem;
    }
    
    .description {
        font-size: 1.125rem;
    }
    
    .hero-buttons {
        flex-direction: row;
        justify-content: center;
    }
    
    .features-grid, .testimonials-grid, .screenshots-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .download-card h2 {
        font-size: 2rem;
    }
    
    .btn-download {
        min-width: 280px;
    }
}

@media (min-width: 900px) {
    .nav-links {
        display: flex;
    }
    
    .download-btn {
        display: inline-block;
    }
    
    .hero .container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        gap: 40px;
    }
    
    .hero-content {
        text-align: left;
        max-width: 480px;
        flex: 1;
    }
    
    .hero-buttons {
        justify-content: flex-start;
    }
    
    .stats {
        justify-content: flex-start;
    }
    
    .features-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .screenshots-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}