/* ========================================
   河图商业页面 - 样式表
   ======================================== */

/* 全局样式 */
:root {
    --primary-color: #b8956a;
    --dark-color: #1a3a52;
    --light-color: #f5f5f5;
    --text-color: #333;
    --border-color: #e0e0e0;
    --transition: all 0.3s ease;
}

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

html, body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
    color: var(--text-color);
    background-color: #fff;
    line-height: 1.6;
}

.content-wrapper {
    width: 100%;
    margin: 0;
    padding: 0;
}

/* ========================================
   Hero Section
   ======================================== */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(26, 58, 82, 0.7) 0%, rgba(45, 90, 123, 0.7) 100%),
                url('./heyu/封面-heyu.png') center/cover no-repeat;
    background-attachment: fixed;
    color: white;
    overflow: hidden;
    padding: 60px 20px;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('./heyu/封面-heyu.png') center/cover no-repeat;
    background-attachment: fixed;
    filter: blur(8px);
    opacity: 0.5;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    text-align: center;
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-size: clamp(3rem, 10vw, 6rem);
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.3;
    animation: slideDown 0.8s ease-out;
    max-width: 90%;
    margin-left: auto;
    margin-right: auto;
    word-spacing: 0.1em;
}

.hero-subtitle {
    font-size: clamp(1rem, 3vw, 1.5rem);
    margin-bottom: 40px;
    opacity: 0.9;
    animation: slideUp 0.8s ease-out 0.2s both;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    animation: slideUp 0.8s ease-out 0.4s both;
}

.hero-logo-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 0;
    opacity: 0.08;
}

.hero-logo {
    width: 300px;
    height: 300px;
    object-fit: contain;
    display: none; /* 隐藏旋转logo */
}

.hero-animation {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    opacity: 0.1;
    z-index: 1;
}

#heroCanvas {
    width: 100%;
    height: 100%;
}

/* ========================================
   按钮样式
   ======================================== */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #b8956a 0%, #9a7a4a 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(184, 149, 106, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(184, 149, 106, 0.4);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #1a3a52;
}

/* ========================================
   Section 通用样式
   ======================================== */
.section-title {
    font-size: clamp(1.8rem, 5vw, 2.5rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 80px;
    color: var(--dark-color);
    position: relative;
    padding-bottom: 20px;
    z-index: 2;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, #b8956a 0%, #9a7a4a 100%);
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 40px;
    font-size: 1.1rem;
}

section {
    padding: 80px 20px;
    width: 100%;
    margin: 0;
}

section > * {
    max-width: 1200px;
    margin: 0 auto;
}

/* ========================================
   Values Section
   ======================================== */
.values-section {
    background: #f9f9f9;
    width: 100%;
    padding: 100px 20px;
}

.values-section > * {
    max-width: 1200px;
    margin: 0 auto;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.value-card {
    background: white;
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    animation: fadeInUp 0.6s ease-out;
}

.value-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.value-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    animation: bounce 2s infinite;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.value-icon img {
    width: 60px;
    height: 60px;
    object-fit: contain;
    animation: float 3s ease-in-out infinite;
}

.value-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.value-card p {
    color: #666;
    line-height: 1.6;
}

/* ========================================
   Feature Screenshot Section
   ======================================== */
.feature-screenshot-section {
    margin-top: 80px;
    padding: 40px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.screenshot-container {
    display: flex;
    gap: 30px;
    min-height: 400px;
    align-items: center;
    justify-content: center;
    transition: all 0.5s ease;
}

.screenshot-container.active {
    align-items: flex-start;
    justify-content: flex-start;
}

.screenshot-buttons {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    transition: all 0.5s ease;
}

.screenshot-container.active .screenshot-buttons {
    flex-direction: column;
    flex-wrap: nowrap;
    min-width: 200px;
    justify-content: flex-start;
}

.screenshot-btn {
    padding: 12px 24px;
    background: #f0f0f0;
    border: 2px solid transparent;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    color: #333;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.screenshot-btn:hover {
    background: #b8956a;
    color: white;
    border-color: #9a7a4a;
    transform: translateY(-2px);
}

.screenshot-container.active .screenshot-btn:hover {
    transform: translateX(5px);
}

.screenshot-btn.active {
    background: linear-gradient(135deg, #b8956a 0%, #9a7a4a 100%);
    color: white;
    border-color: #9a7a4a;
}

.screenshot-display {
    flex: 1;
    background: #f9f9f9;
    border-radius: 8px;
    padding: 20px;
    min-height: 400px;
    display: none;
    flex-direction: column;
    gap: 15px;
    opacity: 0;
    transform: translateX(20px);
    transition: all 0.5s ease;
}

.screenshot-display.active {
    display: flex;
    opacity: 1;
    transform: translateX(0);
}

.screenshot-placeholder {
    text-align: center;
    color: #999;
    font-size: 1rem;
    padding: 40px 20px;
    margin: auto;
}

.screenshot-image {
    width: 100%;
    max-width: 300px;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    animation: fadeInImage 0.5s ease;
    cursor: pointer;
}

@keyframes fadeInImage {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@media (max-width: 768px) {
    .screenshot-container {
        flex-direction: column;
    }
    
    .screenshot-container.active {
        flex-direction: column;
    }
    
    .screenshot-buttons {
        flex-direction: row;
        flex-wrap: wrap;
        width: 100%;
    }
    
    .screenshot-container.active .screenshot-buttons {
        flex-direction: row;
        min-width: 100%;
    }
    
    .screenshot-btn:hover {
        transform: translateY(-2px);
    }
    
    .screenshot-container.active .screenshot-btn:hover {
        transform: translateY(-2px);
    }
}

/* ========================================
   Stats Section
   ======================================== */
.stats-section {
    background: linear-gradient(135deg, #b8956a 0%, #9a7a4a 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #b8956a 0%, #9a7a4a 100%);
    transform: translateX(100%);
    animation: slideInFromRight 1s ease-out forwards;
    z-index: 0;
}

#statsCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.6;
    z-index: 1;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
    align-items: start;
}

.stat-card {
    text-align: center;
    padding: 30px;
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: clamp(2rem, 8vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 10px;
    color: white;
    min-height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1.2;
}

.stat-text {
    color: white !important;
}

.stat-text.stat-small {
    font-size: clamp(1.5rem, 5vw, 2.2rem) !important;
    line-height: 1.3;
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-top: auto;
}

.status-image-container {
    margin-top: 20px;
    text-align: center;
}

.status-image {
    max-width: 100%;
    height: auto;
    max-height: 300px;
    object-fit: contain;
    cursor: pointer;
    transition: var(--transition);
    border-radius: 8px;
}

.status-image:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

/* 放大图片模态框 */
.image-modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    animation: fadeIn 0.3s ease-out;
    align-items: center;
    justify-content: center;
}

.image-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-modal-content {
    position: relative;
    width: 100%;
    height: 100%;
    animation: zoomIn 0.3s ease-out;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    overflow: hidden;
}

.image-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: auto;
    cursor: grab;
}

.image-wrapper:active {
    cursor: grabbing;
}

.image-wrapper img {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
    display: block;
    transition: transform 0.3s ease;
    transform-origin: center center;
}

.image-modal-controls {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    background: rgba(0, 0, 0, 0.6);
    padding: 10px 15px;
    border-radius: 30px;
    z-index: 1002;
}

.zoom-btn {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    color: #333;
    font-size: 20px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.zoom-btn:hover {
    background: #b8956a;
    color: white;
    transform: scale(1.1);
}

.zoom-btn:active {
    transform: scale(0.95);
}

.zoom-reset {
    font-size: 24px;
}

.image-modal-close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: white;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    z-index: 1001;
    transition: var(--transition);
}

.image-modal-close:hover {
    color: #b8956a;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes zoomIn {
    from {
        transform: scale(0.8);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* ========================================
   Custom Modal (Alert & Confirm)
   ======================================== */
.custom-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    animation: fadeIn 0.3s ease-out;
}

.custom-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.custom-modal-content {
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    max-width: 500px;
    width: 90%;
    animation: slideUp 0.3s ease-out;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-body {
    display: flex;
    flex-direction: row;
    min-height: 220px;
    position: relative;
}

.modal-left {
    flex: 1;
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: white;
}

.modal-icon-container {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #b8956a 0%, #9a7a4a 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
}

.modal-icon {
    width: 32px;
    height: 32px;
    color: white;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.modal-text h3 {
    margin: 0 0 10px 0;
    font-size: 1.2rem;
    font-weight: 600;
    color: #1a3a52;
}

.modal-text p {
    margin: 0;
    font-size: 0.9rem;
    color: #666;
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-word;
}

.modal-right {
    position: absolute;
    top: 0;
    right: 0;
    width: 40%;
    height: 100%;
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0.15;
    border-radius: 0 12px 0 0;
}

.alert-bg {
    background-image: url('./heyu/hetu-标.png');
    background-color: #f5f5f5;
}

.confirm-bg {
    background-image: url('./heyu/hetu-标.png');
    background-color: #f5f5f5;
}

.custom-modal-footer {
    padding: 15px 30px;
    border-top: 1px solid #e0e0e0;
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    background-color: #f9f9f9;
}

.alert-footer {
    justify-content: flex-end;
}

.confirm-footer {
    justify-content: flex-end;
}

.modal-btn {
    padding: 10px 25px;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.modal-btn-primary {
    background: linear-gradient(135deg, #b8956a 0%, #9a7a4a 100%);
    color: white;
}

.modal-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(184, 149, 106, 0.3);
}

.modal-btn-secondary {
    background: #e0e0e0;
    color: #333;
}

.modal-btn-secondary:hover {
    background: #d0d0d0;
    transform: translateY(-2px);
}

/* ========================================
   Mission Section
   ======================================== */
.mission-section {
    background: white;
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.mission-card {
    background: linear-gradient(135deg, #f5f5f5 0%, #fff 100%);
    padding: 40px 30px;
    border-radius: 12px;
    border-left: 4px solid #b8956a;
    transition: var(--transition);
    animation: slideInLeft 0.6s ease-out;
    position: relative;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.mission-card:hover {
    transform: translateX(10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.mission-card:nth-child(2) {
    animation-delay: 0.1s;
}

.mission-card:nth-child(3) {
    animation-delay: 0.2s;
}

.mission-card:nth-child(4) {
    animation-delay: 0.3s;
}

.mission-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--dark-color);
    opacity: 0;
    animation: slideUp 0.6s ease-out forwards;
}

.mission-card p {
    color: #666;
    line-height: 1.8;
    opacity: 0;
    animation: slideUp 0.6s ease-out forwards;
}

.mission-grid .mission-card:nth-child(1) h3 {
    animation-delay: 0.7s;
}

.mission-grid .mission-card:nth-child(1) p {
    animation-delay: 0.8s;
}

.mission-grid .mission-card:nth-child(2) h3 {
    animation-delay: 0.8s;
}

.mission-grid .mission-card:nth-child(2) p {
    animation-delay: 0.9s;
}

.mission-grid .mission-card:nth-child(3) h3 {
    animation-delay: 0.9s;
}

.mission-grid .mission-card:nth-child(3) p {
    animation-delay: 1s;
}

.mission-grid .mission-card:nth-child(4) h3 {
    animation-delay: 1s;
}

.mission-grid .mission-card:nth-child(4) p {
    animation-delay: 1.1s;
}

/* ========================================
   Why Support Section
   ======================================== */
.why-support-section {
    background: linear-gradient(135deg, #f5f5f5 0%, #fff 100%);
    padding: 80px 20px;
}

.pentagon-container {
    position: relative;
    width: 100%;
    margin: 0 auto;
    height: 1400px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 150px 50px;
    overflow: visible;
}

#connectionCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 5;
    cursor: grab;
    pointer-events: none;
}

.center-logo {
    position: absolute;
    width: 200px;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 15;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.rotating-logo {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: none; /* 隐藏旋转logo */
}

.reasons-pentagon {
    position: relative;
    width: 100%;
    height: 100%;
}

.reason-card {
    position: absolute;
    width: 240px;
    background: white;
    padding: 30px 20px;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    overflow: hidden;
    animation: slideInUp 0.6s ease-out;
    border: 2px solid transparent;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    z-index: 8;
    cursor: grab;
    user-select: none;
}

.reason-card:active {
    cursor: grabbing;
    z-index: 20;
}

/* 五角星定位 - 五个顶点 */
.reason-card-1 {
    /* 顶部 */
    top: 0;
    left: 50%;
    transform: translate(-50%, 0);
}

.reason-card-2 {
    /* 右上 */
    top: 20%;
    right: 2%;
    left: auto;
    transform: translate(0, 0);
}

.reason-card-3 {
    /* 右下 */
    bottom: 5%;
    right: 10%;
    left: auto;
    top: auto;
    transform: translate(0, 0);
}

.reason-card-4 {
    /* 左下 */
    bottom: 5%;
    left: 10%;
    top: auto;
    transform: translate(0, 0);
}

.reason-card-5 {
    /* 左上 */
    top: 20%;
    left: 2%;
    right: auto;
    transform: translate(0, 0);
}

.reason-card-6 {
    /* 右中 */
    top: 50%;
    right: 2%;
    left: auto;
    transform: translate(0, -50%);
}

.reason-card-7 {
    /* 左中 */
    top: 50%;
    left: 2%;
    right: auto;
    transform: translate(0, -50%);
}

.reason-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #b8956a 0%, #9a7a4a 100%);
    animation: slideInRight 0.8s ease-out;
}

.reason-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: 0 20px 50px rgba(184, 149, 106, 0.2);
    border-color: #b8956a;
}

.reason-card:hover::before {
    animation: slideInRight 0.8s ease-out, glow 1.5s ease-in-out infinite;
}

.reason-card:nth-child(1) {
    animation-delay: 0s;
}

.reason-card:nth-child(2) {
    animation-delay: 0.1s;
}

.reason-card:nth-child(3) {
    animation-delay: 0.2s;
}

.reason-card:nth-child(4) {
    animation-delay: 0.3s;
}

.reason-card:nth-child(5) {
    animation-delay: 0.4s;
}

.reason-card:nth-child(6) {
    animation-delay: 0.5s;
}

.reason-card:nth-child(7) {
    animation-delay: 0.6s;
}

.reason-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #b8956a 0%, #9a7a4a 100%);
    color: white;
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.reason-card h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.reason-card p {
    color: #666;
    line-height: 1.8;
}

/* ========================================
   Support Section
   ======================================== */
.support-section {
    background: white;
}

.contact-tips {
    text-align: center;
    margin-bottom: 40px;
    color: #666;
    font-size: 0.95rem;
}

.contact-tips a {
    color: #b8956a;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.contact-tips a:hover {
    color: #9a7a4a;
    text-decoration: underline;
}

.support-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.support-method {
    background: linear-gradient(135deg, #f5f5f5 0%, #fff 100%);
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    transition: var(--transition);
    border: 2px solid transparent;
    animation: slideInUp 0.6s ease-out;
}

.support-method:nth-child(1) {
    animation-delay: 0s;
}

.support-method:nth-child(2) {
    animation-delay: 0.1s;
}

.support-method:nth-child(3) {
    animation-delay: 0.2s;
}

.support-method:hover {
    border-color: #b8956a;
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(184, 149, 106, 0.2);
}

.method-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.support-method h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.support-method p {
    color: #666;
    margin-bottom: 25px;
    line-height: 1.6;
}

.method-btn {
    display: inline-block;
    padding: 10px 25px;
    background: #b8956a;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    transition: var(--transition);
    font-weight: 600;
}

.method-btn:hover {
    background: #9a7a4a;
    transform: translateY(-2px);
}

/* ========================================
   Transparency Section
   ======================================== */
.transparency-section {
    background: #f9f9f9;
}

.transparency-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.transparency-card {
    background: white;
    padding: 40px 30px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    animation: slideInUp 0.6s ease-out;
}

.transparency-card:nth-child(1) {
    animation-delay: 0s;
}

.transparency-card:nth-child(2) {
    animation-delay: 0.1s;
}

.transparency-card:nth-child(3) {
    animation-delay: 0.2s;
}

.transparency-card h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.transparency-card p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 15px;
}

.transparency-list {
    list-style: none;
    padding: 0;
}

.transparency-list li {
    padding: 8px 0;
    color: #666;
    line-height: 1.6;
}

/* ========================================
   Stories Section
   ======================================== */
.stories-section {
    background: white;
    overflow: hidden;
    padding: 0;
    margin: 0;
    width: 100vw;
    position: relative;
    left: 50%;
    right: 50%;
    margin-left: -50vw;
    margin-right: -50vw;
    min-height: 600px;
}

.stories-wrapper {
    display: flex;
    gap: 0;
    width: 100%;
    height: 100%;
    align-items: stretch;
    min-height: 600px;
}

/* 左侧大卡片 */
.story-display {
    flex: 1;
    background: transparent;
    border-radius: 0;
    padding: 80px 80px;
    text-align: center;
    box-shadow: none;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.story-display-content {
    animation: fadeIn 0.6s ease-out;
    max-width: 100%;
}

.story-avatar-large {
    width: 180px;
    height: 180px;
    margin: 0 auto 40px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(184, 149, 106, 0.3);
}

.story-avatar-large img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.story-name {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 30px;
    color: var(--dark-color);
}

.story-quote {
    font-size: 1.1rem;
    line-height: 1.9;
    color: #666;
    margin-bottom: 30px;
    font-style: italic;
}

.story-role {
    font-size: 1rem;
    color: #b8956a;
    font-weight: 600;
}

/* 竖斜杠分割线 */
.stories-divider-vertical {
    width: 2px;
    background: linear-gradient(180deg, transparent 0%, #b8956a 50%, transparent 100%);
    transform: skewX(-8deg);
    position: relative;
    flex-shrink: 0;
}

/* 右侧折叠卡片列表 */
.stories-sidebar {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    position: relative;
    flex: 0 0 auto;
    width: 240px;
    background: transparent;
    border-radius: 0;
    padding: 40px 30px;
    align-items: center;
}

.story-column {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    min-height: 420px;
}

.story-item-collapsed {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 0;
    cursor: pointer;
    transition: all 0.4s ease;
    position: relative;
    z-index: 2;
    justify-content: center;
    height: 100%;
}

.story-item-collapsed:hover {
    transform: scale(1.02);
}

.story-item-collapsed.active {
    animation: slideToLeft 0.6s ease-out forwards;
}

.story-item-avatar-small {
    width: 60px;
    height: 100%;
    border-radius: 0;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(184, 149, 106, 0.15);
    transition: all 0.4s ease;
    flex-shrink: 0;
    /* 平行四边形剪裁 */
    clip-path: polygon(15% 0%, 100% 0%, 85% 100%, 0% 100%);
}

.story-item-collapsed:hover .story-item-avatar-small {
    box-shadow: 0 4px 12px rgba(184, 149, 106, 0.25);
}

.story-item-collapsed.active .story-item-avatar-small {
    /* 梯形剪裁 */
    clip-path: polygon(25% 0%, 75% 0%, 100% 100%, 0% 100%);
}

.story-item-avatar-small img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.story-item-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--dark-color);
    text-align: center;
    white-space: nowrap;
    width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
}

.story-card:nth-child(1) {
    animation-delay: 0s;
}

.story-card:nth-child(2) {
    animation-delay: 0.1s;
}

.story-card:nth-child(3) {
    animation-delay: 0.2s;
}

.story-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.story-avatar {
    font-size: 3rem;
    margin-bottom: 20px;
}

.story-card h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.story-card p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 20px;
    font-style: italic;
}

.story-meta {
    color: #b8956a;
    font-weight: 600;
}

/* ========================================
   Tech Section
   ======================================== */
.tech-section {
    background: #f9f9f9;
}

.tech-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.tech-card {
    background: white;
    padding: 40px 30px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    animation: fadeInDown 0.6s ease-out;
}

.tech-card:nth-child(1) {
    animation-delay: 0s;
}

.tech-card:nth-child(2) {
    animation-delay: 0.15s;
}

.tech-card:nth-child(3) {
    animation-delay: 0.3s;
}

.tech-card:nth-child(4) {
    animation-delay: 0.45s;
}

.tech-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.tech-card h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.tech-card p {
    color: #666;
    line-height: 1.8;
}

.tech-documentation {
    text-align: center;
    margin-top: 50px;
    padding: 40px 20px;
    background: linear-gradient(135deg, #f5f5f5 0%, #fff 100%);
    border-radius: 12px;
    animation: fadeInUp 0.6s ease-out;
}

.tech-documentation p {
    font-size: 1.1rem;
    color: var(--dark-color);
    margin-bottom: 20px;
    font-weight: 500;
}

.tech-documentation .btn {
    padding: 12px 40px;
    font-size: 1rem;
}

/* ========================================
   Resources Section
   ======================================== */
.resources-section {
    background: white;
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.resource-card {
    background: linear-gradient(135deg, #f5f5f5 0%, #fff 100%);
    padding: 40px 30px;
    border-radius: 12px;
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border: 2px solid transparent;
    display: block;
    animation: fadeInUp 0.6s ease-out;
    cursor: pointer;
}

.resource-card:nth-child(1) {
    animation-delay: 0s;
}

.resource-card:nth-child(2) {
    animation-delay: 0.1s;
}

.resource-card:nth-child(3) {
    animation-delay: 0.2s;
}

.resource-card:nth-child(4) {
    animation-delay: 0.3s;
}

.resource-card:nth-child(5) {
    animation-delay: 0.4s;
}

.resource-card:nth-child(6) {
    animation-delay: 0.5s;
}

.resource-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border-color: #b8956a;
}

.resource-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.resource-card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--dark-color);
}

.resource-card p {
    color: #666;
    line-height: 1.6;
}

/* ========================================
   Download Section
   ======================================== */
.download-section {
    background: linear-gradient(135deg, rgba(184, 149, 106, 0.9) 0%, rgba(160, 120, 80, 0.9) 100%), 
                url('./heyu/hetu-标.png') center/cover no-repeat;
    color: white;
    text-align: center;
    position: relative;
    animation: slideInBackground 0.8s ease-out;
}

.download-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.download-buttons {
    display: flex;
    gap: 80px;
    justify-content: center;
    flex-wrap: wrap;
    align-items: center;
}

.download-icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.download-icon-btn img {
    width: 80px;
    height: 80px;
    object-fit: contain;
    transition: var(--transition);
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.2));
}

.download-icon-btn:hover img {
    transform: scale(1.15) translateY(-8px);
    filter: drop-shadow(0 8px 20px rgba(184, 149, 106, 0.4));
}

.android-icon-btn:hover img {
    filter: drop-shadow(0 8px 20px rgba(61, 220, 132, 0.5));
}

.harmony-icon-btn:hover img {
    filter: drop-shadow(0 8px 20px rgba(255, 0, 0, 0.5));
}

.ios-icon-btn:hover img {
    filter: drop-shadow(0 8px 20px rgba(100, 100, 100, 0.5));
}

.github-icon-btn:hover img {
    filter: drop-shadow(0 8px 20px rgba(51, 51, 51, 0.5));
}

.download-note {
    opacity: 0.9;
    font-size: 0.95rem;
}

/* ========================================
   Footer Section
   ======================================== */
.business-footer {
    position: relative;
    background: linear-gradient(135deg, #8b7355 0%, #6b5344 100%);
    color: white;
    padding: 60px 20px;
    overflow: hidden;
    width: 100%;
}

.footer-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    opacity: 0.25;
    z-index: 1;
    background-image: url('./heyu/hetu-标.png');
    background-repeat: repeat;
    background-size: 100px 100px;
    background-position: 0 0;
    animation: slideBackground 30s linear infinite;
}

.footer-logo-carousel {
    display: none;
}

@keyframes slideBackground {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 100px 100px;
    }
}

.footer-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.footer-content p {
    margin: 10px 0;
    font-size: 0.95rem;
    line-height: 1.6;
}

.footer-content a {
    color: white;
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
}

.footer-content a:hover {
    text-decoration: underline;
    opacity: 0.8;
}

/* ========================================
   Contact Section
   ======================================== */
.contact-section {
    background: #f9f9f9;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.contact-card {
    background: white;
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    animation: slideInUp 0.6s ease-out;
}

.contact-card:nth-child(1) {
    animation-delay: 0s;
}

.contact-card:nth-child(2) {
    animation-delay: 0.1s;
}

.contact-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.contact-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.contact-card p {
    color: #666;
    margin-bottom: 25px;
    line-height: 1.6;
}

.contact-btn {
    display: inline-block;
    padding: 12px 30px;
    background: #b8956a;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    transition: var(--transition);
    font-weight: 600;
}

.contact-btn:hover {
    background: #9a7a4a;
    transform: translateY(-2px);
}

/* ========================================
   Form Section
   ======================================== */
.form-section {
    background: white;
}

.form-container {
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
}

.support-form {
    background: #f9f9f9;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #b8956a;
    box-shadow: 0 0 0 3px rgba(184, 149, 106, 0.1);
}

.form-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 30px;
}

.form-actions .btn {
    flex: 1;
    max-width: 200px;
}

.form-actions .btn-secondary {
    background: #6c757d;
    color: white;
    border: 2px solid #6c757d;
}

.form-actions .btn-secondary:hover {
    background: #5a6268;
    border-color: #5a6268;
    color: white;
}

.form-output {
    background: #f9f9f9;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    margin-top: 30px;
}

.form-output h3 {
    margin-bottom: 20px;
    color: var(--dark-color);
}

.output-content {
    background: white;
    padding: 20px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    margin-bottom: 20px;
    white-space: pre-wrap;
    word-break: break-word;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    max-height: 400px;
    overflow-y: auto;
}

.output-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.output-actions .btn {
    flex: 1;
    max-width: 150px;
}

/* ========================================
   Footer
   ======================================== */
.business-footer {
    background: #1a3a52;
    color: white;
    text-align: center;
    padding: 40px 20px;
}

.footer-content p {
    margin: 10px 0;
    opacity: 0.9;
}

.footer-content a {
    color: #b8956a;
    text-decoration: none;
    transition: var(--transition);
}

.footer-content a:hover {
    text-decoration: underline;
}

/* ========================================
   图标通用样式
   ======================================== */
.mission-icon,
.reason-icon,
.method-icon,
.transparency-icon,
.story-avatar,
.tech-icon,
.resource-icon,
.contact-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.mission-icon {
    opacity: 0;
    animation: iconSlideDown 0.6s ease-out forwards;
}

.mission-grid .mission-card:nth-child(1) .mission-icon {
    animation-delay: 1.3s;
}

.mission-grid .mission-card:nth-child(2) .mission-icon {
    animation-delay: 1.4s;
}

.mission-grid .mission-card:nth-child(3) .mission-icon {
    animation-delay: 1.5s;
}

.mission-grid .mission-card:nth-child(4) .mission-icon {
    animation-delay: 1.6s;
}

.reason-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #b8956a 0%, #9a7a4a 100%);
    border-radius: 50%;
    position: relative;
    box-shadow: 0 8px 20px rgba(184, 149, 106, 0.2);
    animation: iconPulse 2s ease-in-out infinite;
}

.reason-icon::before {
    content: '';
    position: absolute;
    inset: -4px;
    background: linear-gradient(135deg, #b8956a 0%, #9a7a4a 100%);
    border-radius: 50%;
    opacity: 0.3;
    animation: iconRing 2s ease-in-out infinite;
}

.reason-icon img {
    width: 50px;
    height: 50px;
    object-fit: contain;
    filter: brightness(0) invert(1);
    position: relative;
    z-index: 1;
}

.mission-icon img,
.method-icon img,
.transparency-icon img,
.story-avatar img,
.tech-icon img,
.resource-icon img,
.contact-icon img {
    width: 50px;
    height: 50px;
    object-fit: contain;
    animation: float 3s ease-in-out infinite;
}

.story-avatar img {
    width: 60px;
    height: 60px;
}

.resource-icon img {
    width: 45px;
    height: 45px;
}

/* ========================================
   动画
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes infiniteScroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(calc(-280px * 3 - 30px * 3));
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInBackground {
    from {
        background-position: -100% 0;
    }
    to {
        background-position: 0 0;
    }
}

@keyframes fadeInUpDown {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    50% {
        opacity: 0.5;
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideToLeft {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(-100%);
        opacity: 0;
    }
}

@keyframes slideInFromLeft {
    from {
        opacity: 0;
        transform: translateX(-100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInFromRight {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes iconSlideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes iconPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes iconRing {
    0% {
        transform: scale(1);
        opacity: 0.3;
    }
    50% {
        transform: scale(1.2);
        opacity: 0;
    }
    100% {
        transform: scale(1);
        opacity: 0.3;
    }
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 10px rgba(184, 149, 106, 0.3);
    }
    50% {
        box-shadow: 0 0 20px rgba(184, 149, 106, 0.6);
    }
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 768px) {
    section {
        padding: 50px 15px;
    }

    .hero-section {
        padding: 40px 15px;
        min-height: auto;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-animation {
        display: none;
    }

    .values-grid,
    .stats-grid,
    .mission-grid,
    .reasons-grid,
    .support-methods,
    .transparency-content,
    .stories-grid,
    .tech-content,
    .resources-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 1.5rem;
        margin-bottom: 30px;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.95rem;
    }

    .form-actions {
        flex-direction: column;
    }

    .form-actions .btn {
        max-width: 100%;
    }

    .output-actions {
        flex-direction: column;
    }

    .output-actions .btn {
        max-width: 100%;
    }

    .support-form {
        padding: 25px;
    }

    .form-output {
        padding: 25px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 0.9rem;
        margin-bottom: 25px;
    }

    .section-title {
        font-size: 1.3rem;
    }

    .value-card,
    .mission-card,
    .reason-card,
    .support-method,
    .transparency-card,
    .story-card,
    .tech-card,
    .resource-card,
    .contact-card {
        padding: 25px 15px;
    }

    .btn {
        padding: 10px 15px;
        font-size: 0.9rem;
    }

    .download-btn {
        flex-direction: column;
        padding: 15px 25px;
    }

    .support-form {
        padding: 20px;
    }

    .form-output {
        padding: 20px;
    }
}


/* 功能展示模块样式 */
.feature-showcase-section {
    padding: 80px 20px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    position: relative;
}

.feature-showcase-section .section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: #2c3e50;
}

.feature-showcase-section .section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: #7f8c8d;
    margin-bottom: 50px;
}

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

.showcase-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.showcase-btn {
    padding: 15px 35px;
    background: white;
    border: 2px solid #b8956a;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.1rem;
    font-weight: 600;
    color: #2c3e50;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.showcase-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(184, 149, 106, 0.3);
    background: linear-gradient(135deg, #b8956a 0%, #9a7a4a 100%);
    color: white;
}

.showcase-btn.active {
    background: linear-gradient(135deg, #b8956a 0%, #9a7a4a 100%);
    color: white;
    transform: translateY(-3px);
}

.btn-text {
    font-size: 1.1rem;
}

.showcase-display {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    min-height: 500px;
    transition: opacity 0.5s ease;
}

.showcase-images {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    opacity: 0;
    animation: fadeIn 0.5s ease forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.showcase-image-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: all 0.3s ease;
    width: 250px;
    flex-shrink: 0;
}

.showcase-image-item:hover {
    transform: translateY(-10px) scale(1.05);
    box-shadow: 0 8px 25px rgba(184, 149, 106, 0.3);
}

.showcase-image-item img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    display: block;
}

.showcase-image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
    padding: 15px;
    color: white;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.showcase-image-item:hover .showcase-image-overlay {
    opacity: 1;
}

.showcase-empty {
    text-align: center;
    padding: 100px 20px;
    color: #95a5a6;
    font-size: 1.2rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .feature-showcase-section {
        padding: 60px 15px;
    }
    
    .feature-showcase-section .section-title {
        font-size: 2rem;
    }
    
    .showcase-buttons {
        gap: 10px;
    }
    
    .showcase-btn {
        padding: 12px 20px;
        font-size: 0.9rem;
    }
    
    .btn-icon {
        font-size: 1.2rem;
    }
    
    .showcase-display {
        padding: 20px;
        min-height: 400px;
    }
    
    .showcase-images {
        justify-content: center;
        gap: 15px;
    }
    
    .showcase-image-item {
        width: 100%;
        max-width: 350px;
    }
    
    .showcase-image-item img {
        height: 350px;
    }
}

@media (max-width: 480px) {
    .showcase-btn {
        padding: 10px 15px;
        font-size: 0.85rem;
    }
    
    .btn-text {
        font-size: 0.85rem;
    }
    
    .showcase-image-item img {
        height: 300px;
    }
}