@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --primary-color: #f25d3b;
    --primary-gradient: linear-gradient(135deg, #f25d3b 0%, #ff8c6b 100%);
    --hero-bg: #c73e57;
    --hero-gradient: linear-gradient(135deg, #c73e57 0%, #e65c71 100%);
    --text-primary: #222a41;
    --text-secondary: #6d7783;
    --white: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.95);
    --font-family: 'Inter', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.05);
    --shadow-heavy: 0 20px 80px rgba(0, 0, 0, 0.12);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-family);
    color: var(--text-primary);
    line-height: 1.6;
    background-color: var(--white);
    overflow-x: hidden;
}

h1, h2, h3 {
    line-height: 1.2;
    font-weight: 600;
}

ul {
    list-style: none;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

/* Header */
header {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 30px 0;
    transition: var(--transition);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--white);
    font-weight: 700;
    font-size: 20px;
}

.logo-icon {
    width: 140px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
}

.logo-icon svg {
    width: 24px;
    height: 24px;
    color: var(--hero-bg);
}

.logo-text {
    font-size: 18px;
    font-weight: bold;
}

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

.nav-links a {
    color: var(--white);
    font-size: 16px;
    opacity: 0.8;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--white);
    transition: var(--transition);
}

.nav-links a:hover {
    opacity: 1;
}

.nav-links a:hover::after {
    width: 100%;
}

.download-btn {
    background: var(--white);
    color: var(--primary-color);
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 16px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.download-btn:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}

/* Hero Section */
.hero {
    background-color: var(--hero-bg);
    background-image: var(--hero-gradient), url('image/Background.png');
    background-blend-mode: overlay;
    background-size: cover;
    background-position: center;
    min-height: 900px;
    color: var(--white);
    padding-top: 180px;
    position: relative;
    border-bottom-left-radius: 120px;
    border-bottom-right-radius: 120px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 10%;
    left: 5%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 2;
}

.hero-content {
    flex: 1;
    max-width: 600px;
    animation: fadeInL 1s ease-out;
}

@keyframes fadeInL {
    from { opacity: 0; transform: translateX(-50px); }
    to { opacity: 1; transform: translateX(0); }
}

.hero-title {
    font-size: 72px;
    font-weight: 700;
    margin-bottom: 30px;
    line-height: 1.1;
    letter-spacing: -1px;
}

.hero-desc {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 40px;
    max-width: 500px;
    line-height: 1.8;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: flex-end;
    animation: fadeInR 1s ease-out;
}

@keyframes fadeInR {
    from { opacity: 0; transform: translateX(50px); }
    to { opacity: 1; transform: translateX(0); }
}

.hero-image img {
    max-width: 400px;
    height: auto;
    filter: drop-shadow(0 30px 60px rgba(0,0,0,0.4));
    animation: float 5s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-25px) rotate(2deg); }
}

/* Steps Section */
.steps-section {
    padding: 0;
    transform: translateY(-120px);
    position: relative;
    z-index: 10;
}

.steps-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 40px;
    padding: 80px 60px;
    box-shadow: var(--shadow-heavy);
    text-align: center;
}

.steps-header {
    margin-bottom: 60px;
}

.steps-subtitle {
    font-size: 16px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--primary-color);
    margin-bottom: 15px;
    font-weight: 700;
}

.steps-title {
    font-size: 42px;
    color: var(--text-primary);
    font-weight: 700;
}

.steps-grid {
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.step-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 300px;
    transition: var(--transition);
}

.step-item:hover {
    transform: translateY(-5px);
}

.step-icon-wrapper {
    width: 100px;
    height: 100px;
    background: #fff;
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    border: 1px solid #f0f0f0;
}

.step-icon-wrapper img {
    width: 60px;
    height: 60px;
}

.step-item h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.step-item p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.step-arrow {
    opacity: 0.2;
    padding: 0 20px;
}

.step-arrow svg {
    width: 40px;
    height: 40px;
    stroke: var(--primary-color);
}

/* Features Section */
.features-section {
    padding-bottom: 120px;
    background: #fafafa;
    margin-top: -60px;
    padding-top: 150px;
}

.features-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.features-cards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    flex: 1.2;
}

.feature-card {
    background: var(--white);
    border-radius: 24px;
    padding: 50px 30px;
    box-shadow: var(--shadow-soft);
    text-align: center;
    transition: var(--transition);
    border: 1px solid rgba(0,0,0,0.02);
}

.feature-card:hover {
    transform: translateY(-15px);
    box-shadow: 0 30px 60px rgba(0,0,0,0.08);
}

.feature-card:nth-child(even) {
    margin-top: 60px;
}

.feature-icon-wrapper {
    width: 80px;
    height: 80px;
    margin: 0 auto 30px;
    background: #fff;
    border-radius: 24px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.04);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon-wrapper img {
    width: 56px;
    height: 56px;
}

.feature-card h3 {
    font-size: 26px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.feature-card p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.features-text {
    flex: 0.8;
    padding-left: 80px;
}

.features-text-title {
    font-size: 64px;
    color: var(--text-primary);
    margin-bottom: 30px;
    line-height: 1.1;
}

.features-text-desc {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Footer */
footer {
    background-color: var(--primary-color);
    background-image: var(--primary-gradient);
    color: var(--white);
    padding: 100px 0 50px;
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 60px;
}

.footer-info h4 {
    font-size: 20px;
    margin-bottom: 30px;
    font-weight: 700;
}

.footer-info p {
    font-size: 16px;
    opacity: 0.9;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-bottom {
    margin-top: 80px;
    border-top: 1px solid rgba(255,255,255,0.15);
    padding-top: 30px;
    font-size: 15px;
    opacity: 0.8;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom a {
    color: inherit;
    text-decoration: underline;
    opacity: 1;
}

/* Responsive */
@media (max-width: 1200px) {
    .hero-title { font-size: 60px; }
    .features-text { padding-left: 40px; }
    .features-text-title { font-size: 50px; }
}

@media (max-width: 1024px) {
    .container { padding: 0 30px; }
    .features-inner { flex-direction: column-reverse; text-align: center; }
    .features-text { padding-left: 0; margin-bottom: 60px; max-width: 100%; }
    .features-cards-grid { justify-items: center; width: 100%; }
    .feature-card { max-width: 300px; }
}

@media (max-width: 768px) {
    .hero { min-height: 700px; padding-top: 140px; }
    .hero-title { font-size: 48px; }
    .hero-inner { flex-direction: column; text-align: center; }
    .hero-image { margin-top: 60px; justify-content: center; }
    .hero-image img { max-width: 300px; }
    .steps-grid { flex-direction: column; gap: 50px; }
    .step-arrow { transform: rotate(90deg); padding: 10px 0; }
    .features-cards-grid { grid-template-columns: 1fr; }
    .feature-card:nth-child(even) { margin-top: 0; }
    .footer-inner { flex-direction: column; gap: 40px; }
    .footer-bottom { flex-direction: column; gap: 20px; text-align: center; }
}