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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    overflow-x: hidden;
    background: #000;
}

html {
    scroll-behavior: smooth;
}

section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(80px);
    transition: opacity 1.2s ease-out, transform 1.2s ease-out;
}

    section.visible {
        opacity: 1;
        transform: translateY(0);
    }

    section.hero {
        opacity: 1;
        transform: translateY(0);
    }

/* 首屏 - 超大品牌展示 */
.hero {
    background: linear-gradient(135deg, #ff0844 0%, #ffb199 50%, #ff9068 100%);
    position: relative;
}

    .hero::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.2) 0%, transparent 50%), radial-gradient(circle at 80% 50%, rgba(255, 255, 255, 0.2) 0%, transparent 50%);
        animation: pulse 8s ease-in-out infinite;
    }

@keyframes pulse {
    0%, 100% {
        opacity: 0.5;
    }

    50% {
        opacity: 1;
    }
}

.hero-content {
    text-align: center;
    z-index: 1;
    padding: 40px;
}

.brand-name {
    font-size: clamp(80px, 15vw, 200px);
    font-weight: 900;
    color: #fff;
    margin-bottom: 40px;
    letter-spacing: 20px;
    text-shadow: 0 0 80px rgba(255, 255, 255, 0.6);
    animation: fadeInScale 1.5s ease-out, shake 3s ease-in-out infinite;
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.8);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes shake {
    0%, 100% {
        transform: rotate(0deg);
    }

    25% {
        transform: rotate(-1deg);
    }

    75% {
        transform: rotate(1deg);
    }
}

.brand-english {
    font-size: clamp(30px, 4vw, 60px);
    color: rgba(255, 255, 255, 0.95);
    font-weight: 300;
    letter-spacing: 15px;
    margin-bottom: 60px;
    animation: fadeIn 2s ease-out 0.5s both;
}

.tagline {
    font-size: clamp(24px, 3vw, 48px);
    color: rgba(255, 255, 255, 1);
    font-weight: 700;
    margin-bottom: 40px;
    animation: fadeIn 2s ease-out 1s both;
    text-transform: uppercase;
}

.top-contact {
    position: absolute;
    top: 40px;
    right: 40px;
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 30px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.4);
    color: rgba(255, 255, 255, 1);
    font-size: 14px;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s ease;
    animation: slideInRight 1s ease-out 1.5s both;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.top-contact:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.top-contact-icon {
    font-size: 18px;
}

.top-contact-text {
    font-weight: 600;
}

.scroll-hint {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.9);
    font-size: 14px;
    letter-spacing: 2px;
    animation: bounce 2s infinite;
}

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

    50% {
        transform: translate(-50%, 10px);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* 品牌理念区 */
.concept {
    background: linear-gradient(to bottom, #1a1a2e 0%, #16213e 100%);
    padding: 100px 40px;
}

.concept-content {
    max-width: 1400px;
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 60px;
}

.concept-card {
    text-align: center;
    padding: 60px 40px;
    background: rgba(255, 8, 68, 0.08);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 8, 68, 0.3);
    transition: all 0.5s ease;
    opacity: 0;
    transform: translateY(50px) scale(0.9);
}

    .concept-card.visible {
        opacity: 1;
        transform: translateY(0) scale(1);
    }

    .concept-card:nth-child(1) {
        transition-delay: 0.2s;
    }

    .concept-card:nth-child(2) {
        transition-delay: 0.4s;
    }

    .concept-card:nth-child(3) {
        transition-delay: 0.6s;
    }

    .concept-card:hover {
        transform: translateY(-20px) scale(1.05);
        background: rgba(255, 8, 68, 0.15);
        box-shadow: 0 30px 60px rgba(255, 8, 68, 0.4);
    }

.concept-icon {
    font-size: 80px;
    margin-bottom: 30px;
    filter: drop-shadow(0 0 20px rgba(255, 144, 104, 0.6));
}

.concept-title {
    font-size: 36px;
    color: #ff9068;
    font-weight: 700;
    margin-bottom: 20px;
}

.concept-desc {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

/* 应用场景区 */
.scenarios {
    background: linear-gradient(135deg, #ff0844 0%, #ffb199 100%);
    padding: 100px 40px;
}

.scenarios-content {
    max-width: 1600px;
    width: 100%;
    text-align: center;
}

.section-title {
    font-size: clamp(48px, 6vw, 80px);
    color: #fff;
    font-weight: 900;
    margin-bottom: 80px;
    text-shadow: 0 0 40px rgba(0, 0, 0, 0.4);
}

.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.scenario-item {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(20px);
    border-radius: 25px;
    padding: 50px 40px;
    border: 2px solid rgba(255, 255, 255, 0.4);
    transition: all 0.4s ease;
    opacity: 0;
    transform: translateY(40px) rotateX(10deg);
}

    .scenario-item.visible {
        opacity: 1;
        transform: translateY(0) rotateX(0);
    }

    .scenario-item:nth-child(1) {
        transition-delay: 0.1s;
    }

    .scenario-item:nth-child(2) {
        transition-delay: 0.2s;
    }

    .scenario-item:nth-child(3) {
        transition-delay: 0.3s;
    }

    .scenario-item:nth-child(4) {
        transition-delay: 0.4s;
    }

    .scenario-item:nth-child(5) {
        transition-delay: 0.5s;
    }

    .scenario-item:nth-child(6) {
        transition-delay: 0.6s;
    }

    .scenario-item:hover {
        transform: scale(1.08) rotate(-2deg);
        background: rgba(255, 255, 255, 0.35);
        box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    }

.scenario-emoji {
    font-size: 70px;
    margin-bottom: 25px;
    display: block;
}

.scenario-name {
    font-size: 28px;
    color: #fff;
    font-weight: 700;
}

/* 联系区 */
.contact {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    padding: 120px 40px;
    position: relative;
}

    .contact::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: radial-gradient(circle at 30% 50%, rgba(255, 8, 68, 0.15) 0%, transparent 50%), radial-gradient(circle at 70% 50%, rgba(255, 144, 104, 0.15) 0%, transparent 50%);
    }

.contact-content {
    max-width: 1000px;
    width: 100%;
    text-align: center;
    position: relative;
    z-index: 1;
}

.contact-title {
    font-size: clamp(40px, 5vw, 70px);
    color: #fff;
    font-weight: 800;
    margin-bottom: 60px;
}

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

.contact-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    padding: 40px 50px;
    background: linear-gradient(135deg, #ff0844 0%, #ff9068 100%);
    border-radius: 20px;
    color: #fff;
    box-shadow: 0 20px 60px rgba(255, 8, 68, 0.5);
    transition: all 0.3s ease;
    cursor: pointer;
    min-width: 300px;
}

    .contact-box:hover {
        transform: translateY(-5px) scale(1.02);
        box-shadow: 0 30px 80px rgba(255, 8, 68, 0.7);
    }

.contact-box-icon {
    font-size: 36px;
}

.contact-box-label {
    font-size: 16px;
    font-weight: 500;
    opacity: 0.95;
    letter-spacing: 1px;
}

.contact-box-value {
    font-size: 24px;
    font-weight: 600;
    letter-spacing: 2px;
}

.domain-footer {
    margin-top: 80px;
    font-size: 20px;
    color: rgba(255, 255, 255, 0.6);
    letter-spacing: 4px;
}

.footer-info {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    line-height: 2;
}

    .footer-info a {
        color: rgba(255, 255, 255, 0.6);
        text-decoration: none;
        transition: color 0.3s ease;
    }

        .footer-info a:hover {
            color: rgba(255, 255, 255, 0.9);
        }

/* 响应式 */
@media (max-width: 1024px) {
    .concept-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .scenarios-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }

    .top-contact {
        top: 20px;
        right: 20px;
        padding: 12px 20px;
        font-size: 12px;
    }

    .top-contact-icon {
        font-size: 16px;
    }
}