/* style.css */
:root {
    --primary-color: #FF8A00;
    --primary-dark: #E67A00;
    --primary-light: #FFF0E0;
    --text-main: #111111;
    --text-secondary: #666666;
    --text-light: #999999;
    --bg-white: #FFFFFF;
    --bg-gray: #F7F8FA;
    --border-color: #EAEAEA;
    --shadow-sm: 0 4px 12px rgba(0,0,0,0.05);
    --shadow-md: 0 10px 30px rgba(0,0,0,0.08);
    --shadow-lg: 0 20px 40px rgba(255,138,0,0.15);
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 999px;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
    font-family: 'Noto Sans SC', sans-serif;
    color: var(--text-main);
    background-color: var(--bg-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

ul {
    list-style: none;
}

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

/* Typography */
h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

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

.highlight {
    color: var(--primary-color);
    position: relative;
    display: inline-block;
}
.highlight::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 0;
    width: 100%;
    height: 12px;
    background-color: rgba(255, 138, 0, 0.2);
    z-index: -1;
    border-radius: 4px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 24px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    gap: 8px;
}

.btn-large {
    padding: 16px 36px;
    font-size: 1.125rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    box-shadow: 0 8px 16px rgba(255, 138, 0, 0.25);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 20px rgba(255, 138, 0, 0.35);
}

.btn-secondary {
    background-color: var(--text-main);
    color: white;
}

.btn-secondary:hover {
    background-color: #000;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.15);
}

.btn-outline {
    background-color: transparent;
    border-color: rgba(255,255,255,0.4);
    color: white;
}

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

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

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

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary-color), #FF5E00);
    color: white;
    border-radius: 10px;
    font-size: 1.25rem;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    gap: 40px;
}

.nav-links a {
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
}

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

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    background: linear-gradient(180deg, #FAFBFC 0%, var(--bg-white) 100%);
    overflow: hidden;
}

.hero-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    background-color: var(--primary-light);
    color: var(--primary-color);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: 24px;
}

.hero-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 90%;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 60px;
}

.stats {
    display: flex;
    gap: 40px;
}

.stat-item h4 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 4px;
}

.stat-item p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Hero Image & CSS Phone Mockup */
.hero-image {
    flex: 1;
    position: relative;
    display: flex;
    justify-content: center;
}

.decoration-circle {
    position: absolute;
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, var(--primary-light), rgba(255,138,0,0.05));
    border-radius: 50%;
    z-index: 0;
    right: -100px;
    top: -50px;
}

.decoration-circle-small {
    position: absolute;
    width: 150px;
    height: 150px;
    background: var(--primary-color);
    border-radius: 50%;
    z-index: 2;
    left: 20px;
    bottom: 50px;
    opacity: 0.1;
}

.phone-mockup {
    position: relative;
    width: 320px;
    height: 650px;
    background-color: #000;
    border-radius: 40px;
    padding: 12px;
    box-shadow: 0 24px 48px rgba(0,0,0,0.15), 0 0 0 2px #E0E0E0;
    z-index: 1;
    transform: rotate(-5deg);
    transition: var(--transition);
}

.phone-mockup:hover {
    transform: rotate(0deg) translateY(-10px);
}

.phone-notch {
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 25px;
    background-color: #000;
    border-bottom-left-radius: 16px;
    border-bottom-right-radius: 16px;
    z-index: 10;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background-color: #F7F8FA;
    border-radius: 30px;
    overflow: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
}

/* App Mockup Inner Styles */
.app-header {
    background: #fff;
    padding: 40px 16px 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.app-title {
    font-size: 1.125rem;
    font-weight: 700;
}

.app-icons {
    display: flex;
    gap: 12px;
    font-size: 1.25rem;
    color: var(--text-main);
}

.app-search {
    margin: 8px 16px;
    background-color: var(--bg-gray);
    padding: 8px 16px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-light);
    font-size: 0.8rem;
}

.app-nav {
    display: flex;
    gap: 20px;
    padding: 12px 16px;
    font-size: 0.875rem;
    background: #fff;
    color: var(--text-secondary);
    font-weight: 500;
}

.app-nav .active {
    color: var(--text-main);
    font-weight: 700;
    position: relative;
}

.app-nav .active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 12px;
    height: 3px;
    background: var(--text-main);
    border-radius: 2px;
}

.app-banner {
    margin: 12px 16px;
    height: 120px;
    border-radius: 12px;
    background: linear-gradient(135deg, #6B7280, #374151);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    padding: 16px;
}

.banner-text {
    color: white;
    z-index: 1;
}

.banner-text h3 {
    font-size: 1.125rem;
    margin-bottom: 4px;
}
.banner-text p {
    font-size: 0.75rem;
    opacity: 0.8;
    margin-bottom: 12px;
}
.banner-text button {
    background: rgba(255,255,255,0.2);
    border: none;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    color: white;
    font-size: 0.7rem;
    backdrop-filter: blur(4px);
}

.app-categories {
    display: flex;
    justify-content: space-between;
    padding: 16px;
    background: #fff;
    margin-bottom: 12px;
}

.cat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.cat-item .icon-wrap {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-gray);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.25rem;
    color: var(--text-main);
}
.cat-item span {
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.app-cards-container {
    display: flex;
    gap: 12px;
    padding: 0 16px 80px;
}

.app-card {
    flex: 1;
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}

.card-img {
    height: 100px;
    background: #E5E7EB;
}

.card-img.img-1 { background: linear-gradient(135deg, #D1D5DB, #9CA3AF); }
.card-img.img-2 { background: linear-gradient(135deg, #F3DACA, #E5B89F); }

.card-info {
    padding: 8px;
}

.card-title {
    font-size: 0.8rem;
    font-weight: 600;
}

.card-subtitle {
    font-size: 0.65rem;
    color: var(--text-light);
}

.app-tabbar {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 60px;
    background: #fff;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding-bottom: 8px;
}

.tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    color: var(--text-light);
    font-size: 0.65rem;
}
.tab-item i {
    font-size: 1.25rem;
}
.tab-item.active {
    color: var(--text-main);
}

/* Features Section */
.features {
    padding: 100px 0;
    background-color: var(--bg-white);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
}

.feature-card {
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    background-color: var(--bg-gray);
    transition: var(--transition);
    border: 1px solid transparent;
}

.feature-card:hover {
    background-color: var(--bg-white);
    box-shadow: var(--shadow-md);
    border-color: var(--border-color);
    transform: translateY(-5px);
}

.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: 24px;
}

.icon-orange { background: rgba(255,138,0,0.1); color: #FF8A00; }
.icon-blue { background: rgba(59,130,246,0.1); color: #3B82F6; }
.icon-purple { background: rgba(139,92,246,0.1); color: #8B5CF6; }
.icon-green { background: rgba(16,185,129,0.1); color: #10B981; }

.feature-card h3 {
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Download Section */
.download {
    padding: 80px 0;
    background-color: var(--bg-white);
}

.download-container {
    background: linear-gradient(135deg, var(--text-main), #2A2A2A);
    border-radius: 30px;
    padding: 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: white;
    box-shadow: 0 24px 48px rgba(0,0,0,0.1);
}

.download-content {
    max-width: 600px;
}

.download-content h2 {
    color: white;
}

.download-content p {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: 40px;
}
.download-content p strong {
    color: var(--primary-color);
    font-size: 1.5rem;
}

.download-buttons {
    display: flex;
    gap: 16px;
}

.qrcode-wrapper {
    background: white;
    padding: 24px;
    border-radius: var(--radius-lg);
    text-align: center;
    color: var(--text-main);
}

.qrcode {
    width: 140px;
    height: 140px;
    background: var(--bg-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--text-main);
    border-radius: 12px;
    margin-bottom: 12px;
}
.qrcode-wrapper p {
    font-weight: 600;
    font-size: 0.9rem;
}

/* Footer */
.footer {
    background-color: var(--bg-white);
    border-top: 1px solid var(--border-color);
    padding: 80px 0 24px;
}

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

.footer-brand {
    max-width: 300px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 0.9rem;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-main);
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary-color);
    color: white;
}

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

.link-column h4 {
    font-size: 1rem;
    margin-bottom: 20px;
}

.link-column ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.link-column a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    color: var(--text-light);
    font-size: 0.875rem;
}

/* Animations */
.fade-in-up {
    animation: fadeInUp 0.8s cubic-bezier(0.25, 0.8, 0.25, 1) forwards;
    opacity: 0;
    transform: translateY(20px);
}

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

/* Responsive */
@media (max-width: 992px) {
    .hero-container {
        flex-direction: column;
        text-align: center;
    }
    .hero-content {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    .stats {
        justify-content: center;
    }
    .download-container {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }
    .download-buttons {
        justify-content: center;
    }
    .footer-links {
        gap: 40px;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }
    .nav-links {
        display: none;
    }
    .stats {
        flex-wrap: wrap;
    }
    .download-buttons {
        flex-direction: column;
    }
    .footer-container {
        flex-direction: column;
    }
    .footer-links {
        flex-wrap: wrap;
    }
}