/* ===================================
   Global Styles & Variables
   =================================== */
:root {
    --primary: #6B2737;
    --secondary: #C9A96E;
    --cream: #FDF4E3;
    --dark: #2D1F23;
    --text: #3D2C31;
    --text-light: #6B5A5F;
    --white: #FFFFFF;
    --shadow: 0 4px 20px rgba(107, 39, 55, 0.15);
    --shadow-lg: 0 8px 40px rgba(107, 39, 55, 0.2);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Gowun Dodum', sans-serif;
    background-color: var(--cream);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
    padding-bottom: 100px;
}

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

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4 {
    color: var(--primary);
    font-weight: 400;
    line-height: 1.3;
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    margin-bottom: 1rem;
}

h3 {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
}

p {
    color: var(--text-light);
}

.highlight {
    color: var(--secondary);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    /* 背景图片路径: static/images/hero-bg.png */
    background: 
        linear-gradient(135deg, rgba(107, 39, 55, 0.92) 0%, rgba(78, 32, 43, 0.95) 50%, rgba(45, 17, 23, 0.97) 100%),
        url('../images/hero-bg.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(201, 169, 110, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(201, 169, 110, 0.1) 0%, transparent 50%),
        url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23C9A96E' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 60px 0;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(201, 169, 110, 0.2);
    border: 1px solid rgba(201, 169, 110, 0.3);
    color: var(--secondary);
    padding: 10px 24px;
    border-radius: 50px;
    font-size: 0.9rem;
    margin-bottom: 30px;
    backdrop-filter: blur(10px);
}

.hero h1 {
    color: var(--white);
    margin-bottom: 16px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    color: var(--secondary);
    margin-bottom: 24px;
}

.hero-desc {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    max-width: 600px;
    margin: 0 auto 40px;
}

.hero-tags {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
}

.hero-tags span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--white);
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 0.95rem;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.hero-tags span:hover {
    background: rgba(201, 169, 110, 0.2);
    border-color: var(--secondary);
}

.hero-tags span i {
    color: var(--secondary);
}

/* ===================================
   Intro Section
   =================================== */
.intro {
    padding: 100px 0;
    background: var(--white);
}

.intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.intro-text h2 {
    margin-bottom: 20px;
}

.intro-text p {
    font-size: 1.1rem;
    margin-bottom: 30px;
}

.intro-features {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.intro-feature {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--cream);
    padding: 10px 18px;
    border-radius: 50px;
    font-size: 0.95rem;
    color: var(--text);
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.intro-feature:hover {
    border-color: var(--secondary);
    transform: translateY(-2px);
}

.intro-feature i {
    color: var(--primary);
    font-size: 1rem;
}

.intro-image {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.intro-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(107, 39, 55, 0.1), transparent);
    pointer-events: none;
    z-index: 1;
}

.intro-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s ease;
}

.intro-image:hover img {
    transform: scale(1.03);
}

/* ===================================
   Section Headers
   =================================== */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), #8B3A4E);
    color: var(--white);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    margin-bottom: 20px;
}

.section-badge.light {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.section-header p {
    font-size: 1.1rem;
    margin-top: 16px;
}

/* ===================================
   Method Section
   =================================== */
.method {
    padding: 100px 0;
    background: var(--cream);
}

.method-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.method-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.method-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

.method-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.method-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--cream), var(--white));
    border: 2px solid var(--secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.method-icon i {
    font-size: 1.8rem;
    color: var(--primary);
}

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

.method-card p {
    font-size: 0.95rem;
}

/* ===================================
   Community Section
   =================================== */
.community {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary) 0%, #4A1B26 100%);
    position: relative;
    overflow: hidden;
}

.community::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(201, 169, 110, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.community-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.community-content {
    position: relative;
    z-index: 1;
}

.community h2 {
    color: var(--white);
    margin-bottom: 20px;
}

.community-desc {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.1rem;
    margin-bottom: 40px;
}

.community-list {
    list-style: none;
}

.community-list li {
    display: flex;
    align-items: center;
    gap: 16px;
    color: rgba(255, 255, 255, 0.9);
    padding: 16px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 1.05rem;
}

.community-list li:last-child {
    border-bottom: none;
}

.community-list li i {
    width: 40px;
    height: 40px;
    background: rgba(201, 169, 110, 0.2);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary);
    font-size: 1rem;
}

.community-image {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.community-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(201, 169, 110, 0.15), transparent);
    pointer-events: none;
    z-index: 1;
}

.community-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s ease;
}

.community-image:hover img {
    transform: scale(1.03);
}

/* ===================================
   Curriculum Section
   =================================== */
.curriculum {
    padding: 100px 0;
    background: var(--white);
}

.curriculum-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.curriculum-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 30px;
    background: var(--cream);
    border-radius: 16px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.curriculum-item:hover {
    border-color: var(--secondary);
    transform: translateX(8px);
}

.curriculum-number {
    font-size: 2.5rem;
    font-weight: 400;
    color: var(--secondary);
    line-height: 1;
    opacity: 0.6;
}

.curriculum-content h3 {
    margin-bottom: 8px;
    color: var(--primary);
}

.curriculum-content p {
    font-size: 0.95rem;
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--dark);
    padding: 60px 0 30px;
    margin-bottom: 20px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand h3 {
    color: var(--white);
    margin-bottom: 8px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
}

.footer-links {
    display: flex;
    gap: 30px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--secondary);
}

.footer-bottom {
    padding-top: 30px;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.9rem;
}

/* ===================================
   Fixed CTA Button
   =================================== */
.fixed-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
   
    z-index: 1000;
    display: flex;
    justify-content: center;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background: linear-gradient(135deg, var(--secondary) 0%, #B8964D 100%);
    color: var(--dark);
    border: none;
    padding: 18px 48px;
    border-radius: 60px;
    font-family: 'Gowun Dodum', sans-serif;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 30px rgba(201, 169, 110, 0.4);
    animation: urgentPulse 2s ease-in-out infinite;
}

@keyframes urgentPulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 8px 30px rgba(201, 169, 110, 0.4);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 12px 40px rgba(201, 169, 110, 0.6);
    }
}

.cta-button:hover {
    animation: none;
    transform: scale(1.08);
    box-shadow: 0 15px 50px rgba(201, 169, 110, 0.6);
}

.cta-button:active {
    transform: scale(1.02);
}

.cta-icon {
    width: 28px;
    height: 28px;
    object-fit: contain;
}

/* ===================================
   Modal Styles
   =================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(45, 31, 35, 0.9);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    background: var(--white);
    width: 90%;
    max-width: 700px;
    max-height: 80vh;
    border-radius: 20px;
    padding: 40px;
    overflow-y: auto;
    transform: translateY(30px);
    transition: transform 0.3s ease;
}

.modal.active .modal-content {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: var(--cream);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: var(--primary);
    color: var(--white);
}

.modal-close i {
    font-size: 1rem;
}

.modal-content h2 {
    margin-bottom: 30px;
    padding-right: 50px;
}

.modal-body h3 {
    font-size: 1.1rem;
    margin: 24px 0 12px;
    color: var(--primary);
}

.modal-body h3:first-child {
    margin-top: 0;
}

.modal-body p {
    margin-bottom: 12px;
    line-height: 1.8;
}

.modal-body ul {
    margin: 12px 0;
    padding-left: 24px;
}

.modal-body ul li {
    margin-bottom: 8px;
    color: var(--text-light);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
    .method-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .curriculum-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    body {
        padding-bottom: 100px;
    }
    
    .hero {
        min-height: auto;
        padding: 60px 0;
        background-attachment: scroll;
    }
    
    .hero-content {
        padding: 30px 0;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
        margin-bottom: 16px;
    }
    
    .hero-desc {
        font-size: 0.95rem;
        margin-bottom: 24px;
        padding: 0 10px;
    }
    
    .hero-tags {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }
    
    .hero-tags span {
        width: 100%;
        max-width: 260px;
        justify-content: center;
        padding: 10px 16px;
        font-size: 0.9rem;
    }
    
    .intro {
        padding: 50px 0;
    }
    
    .intro-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .intro-text {
        text-align: center;
        order: 1;
    }
    
    .intro-text h2 {
        font-size: 1.4rem;
    }
    
    .intro-text p {
        font-size: 1rem;
        margin-bottom: 20px;
    }
    
    .intro-features {
        justify-content: center;
    }
    
    .intro-feature {
        padding: 8px 14px;
        font-size: 0.85rem;
    }
    
    .intro-image {
        order: 2;
        border-radius: 16px;
        max-width: 90%;
        margin: 0 auto;
    }
    
    .method {
        padding: 50px 0;
    }
    
    .section-header h2 {
        font-size: 1.4rem;
    }
    
    .section-header p {
        font-size: 0.95rem;
    }
    
    .method-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .method-card {
        padding: 24px 20px;
    }
    
    .method-icon {
        width: 56px;
        height: 56px;
        margin-bottom: 16px;
    }
    
    .method-icon i {
        font-size: 1.4rem;
    }
    
    .method-card h3 {
        font-size: 1.1rem;
    }
    
    .method-card p {
        font-size: 0.9rem;
    }
    
    .community {
        padding: 50px 0;
    }
    
    .community-wrapper {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .community-content {
        text-align: center;
        order: 1;
    }
    
    .community h2 {
        font-size: 1.4rem;
    }
    
    .community-desc {
        font-size: 0.95rem;
        margin-bottom: 24px;
    }
    
    .community-list li {
        justify-content: flex-start;
        text-align: left;
        padding: 12px 0;
        font-size: 0.95rem;
    }
    
    .community-list li i {
        width: 36px;
        height: 36px;
        font-size: 0.9rem;
        flex-shrink: 0;
    }
    
    .community-image {
        order: 2;
        border-radius: 16px;
        max-width: 90%;
        margin: 0 auto;
    }
    
    .curriculum {
        padding: 50px 0;
    }
    
    .curriculum-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .curriculum-item {
        padding: 20px;
        gap: 16px;
    }
    
    .curriculum-number {
        font-size: 2rem;
        min-width: 50px;
    }
    
    .curriculum-content h3 {
        font-size: 1.05rem;
    }
    
    .curriculum-content p {
        font-size: 0.9rem;
    }
    
    .footer {
        padding: 40px 0 20px;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
    
    .footer-brand h3 {
        font-size: 1.1rem;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }
    
    .footer-links a {
        font-size: 0.9rem;
    }
    
    .fixed-cta {
        padding: 16px 12px;
    }
    
    .cta-button {
        padding: 14px 28px;
        font-size: 0.95rem;
        width: 100%;
        max-width: 320px;
    }
    
    .cta-icon {
        width: 22px;
        height: 22px;
    }
    
    .modal-content {
        padding: 24px 20px;
        margin: 16px;
        width: calc(100% - 32px);
        max-height: 85vh;
    }
    
    .modal-content h2 {
        font-size: 1.3rem;
        margin-bottom: 20px;
    }
    
    .modal-body h3 {
        font-size: 1rem;
        margin: 20px 0 10px;
    }
    
    .modal-body p {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero {
        padding: 50px 0;
    }
    
    .hero-badge {
        padding: 8px 14px;
        font-size: 0.8rem;
        margin-bottom: 20px;
    }
    
    .hero h1 {
        font-size: 1.5rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-desc {
        font-size: 0.9rem;
    }
    
    .hero-tags span {
        max-width: 100%;
    }
    
    .section-header {
        margin-bottom: 30px;
    }
    
    .section-badge {
        font-size: 0.8rem;
        padding: 6px 16px;
    }
    
    .intro-feature {
        padding: 8px 12px;
        font-size: 0.8rem;
    }
    
    .curriculum-item {
        flex-direction: row;
        text-align: left;
    }
    
    .curriculum-number {
        font-size: 1.8rem;
    }
    
    .method-card {
        padding: 20px 16px;
    }
}

/* ===================================
   Scrollbar Styling
   =================================== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--cream);
}

::-webkit-scrollbar-thumb {
    background: var(--secondary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

/* ===================================
   Selection Styling
   =================================== */
::selection {
    background: var(--secondary);
    color: var(--white);
}