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

body {
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 3;
    padding: 18px 0;
    background: rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-inner {
    width: 1920px;
    max-width: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

@media (max-width: 1920px) {
    .header-inner {
        width: 100%;
        padding: 0 50px;
    }
}

.brand {
    color: #ffffff;
    text-decoration: none;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    font-size: 0.95rem;
    white-space: nowrap;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 24px;
}

.header-nav a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-size: 0.9rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: color 0.3s ease, opacity 0.3s ease;
}

.header-nav a:hover {
    color: #ffffff;
    opacity: 1;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 4;
    position: relative;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: #ffffff;
    transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

.background-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 700px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 0;
    will-change: transform;
}

.background-layer.slide-out-left {
    animation: slideOutLeft 1s ease-in-out forwards;
}

.background-layer.slide-out-right {
    animation: slideOutRight 1s ease-in-out forwards;
}

.background-layer.slide-in-right {
    animation: slideInRight 1s ease-in-out forwards;
}

.background-layer.slide-in-left {
    animation: slideInLeft 1s ease-in-out forwards;
}

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

@keyframes slideOutRight {
    from {
        transform: translateX(0);
    }
    to {
        transform: translateX(100%);
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
    }
    to {
        transform: translateX(0);
    }
}

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

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 700px;
    background-color: rgba(0, 0, 0, 0.4);
    z-index: 1;
}

.container {
    position: relative;
    z-index: 2;
    height: 700px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 100px 20px 100px;
}

.content {
    text-align: center;
    color: white;
    max-width: 600px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
    gap: 20px;
}

h1 {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    letter-spacing: -0.02em;
    text-transform: none;
}

.main-words {
    margin-bottom: 1.5rem;
    position: relative;
    height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.main-words .word {
    position: absolute;
    margin-bottom: 0;
    opacity: 0;
    visibility: hidden;
    left: 50%;
    transform: translateX(-50%);
    will-change: transform, opacity;
}

.main-words .word.active {
    opacity: 1;
    visibility: visible;
}

.main-words .word.active.slide-in-right {
    animation: slideInWordRight 1s ease-in-out forwards;
}

.main-words .word.active.slide-in-left {
    animation: slideInWordLeft 1s ease-in-out forwards;
}

.main-words .word.slide-out-left {
    opacity: 1;
    visibility: visible;
    animation: slideOutWordLeft 1s ease-in-out forwards;
}

.main-words .word.slide-out-right {
    opacity: 1;
    visibility: visible;
    animation: slideOutWordRight 1s ease-in-out forwards;
}

@keyframes slideInWordRight {
    from {
        transform: translateX(calc(50vw + 50%));
    }
    to {
        transform: translateX(-50%);
    }
}

@keyframes slideInWordLeft {
    from {
        transform: translateX(calc(-50vw - 150%));
    }
    to {
        transform: translateX(-50%);
    }
}

@keyframes slideOutWordLeft {
    from {
        transform: translateX(-50%);
    }
    to {
        transform: translateX(calc(-50vw - 150%));
    }
}

@keyframes slideOutWordRight {
    from {
        transform: translateX(-50%);
    }
    to {
        transform: translateX(calc(50vw + 50%));
    }
}

p {
    font-size: 1.25rem;
    font-weight: 400;
    margin-bottom: 1.5rem;
    opacity: 1;
    letter-spacing: 0.01em;
}

.bottom-section {
    text-align: center;
    position: absolute;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
}

.links {
    display: flex;
    flex-direction: row;
    gap: 2rem;
    align-items: center;
    justify-content: center;
}

.links a {
    display: block;
    transition: all 0.3s ease;
    opacity: 0.85;
}

.links a:hover {
    opacity: 1;
    transform: scale(1.1);
}

.links a:hover img {
    filter: brightness(0) saturate(100%) invert(28%) sepia(85%) saturate(2567%) hue-rotate(347deg) brightness(95%) contrast(88%);
}

.links img {
    width: 40px;
    height: 40px;
    filter: brightness(0) invert(1);
}

.bg-dots {
    position: absolute;
    top: 670px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot:hover {
    background-color: rgba(255, 255, 255, 0.7);
    transform: scale(1.2);
}

.dot.active {
    background-color: rgba(255, 255, 255, 1);
    transform: scale(1.3);
}

.dual-image-section {
    position: absolute;
    top: 700px;
    left: 0;
    width: 100%;
    display: flex;
    z-index: 2;
}

.image-box {
    flex: 1;
    width: 33.33%;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    position: relative;
}

.image-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: flex-end;
    padding: 40px;
    background: linear-gradient(
        to top,
        rgba(0, 0, 0, 0.65) 0%,
        rgba(0, 0, 0, 0.2) 40%,
        rgba(0, 0, 0, 0) 70%
    );
}

.overlay-text {
    color: white;
}

.collection-name {
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 8px;
    letter-spacing: 0.02em;
    text-shadow: 0 1px 6px rgba(0, 0, 0, 0.8);
}

.collection-title {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.8);
}

.shop-button {
    display: inline-block;
    background-color: white;
    color: black;
    padding: 8px 24px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: background-color 0.3s ease, color 0.3s ease;
    touch-action: manipulation;
}

.shop-button:hover {
    background-color: #e5e5e5;
}

.shop-button:active {
    background-color: #d0d0d0;
    transform: scale(0.98);
}

/* Image-Text Section */
.image-text-section {
    position: relative;
    width: 100%;
    background-color: #ffffff;
    padding: 0 0 60px 0;
}

.section-fitness {
    margin-top: 33.33vw;
    padding-top: 60px;
}

.image-text-container {
    width: 1920px;
    max-width: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 80px;
    padding: 0 50px;
}

.image-text-section.reverse .image-text-container {
    flex-direction: row-reverse;
}

.image-text-image {
    flex: 0 0 50%;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border-radius: 8px;
}

.image-text-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.image-text-content {
    flex: 1;
    color: #1a1a1a;
}

.section-label {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #666;
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    color: #1a1a1a;
}

.section-description {
    font-size: 1.125rem;
    line-height: 1.7;
    margin-bottom: 32px;
    color: #444;
}

.section-button {
    display: inline-block;
    background-color: #1a1a1a;
    color: white;
    padding: 12px 32px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: background-color 0.3s ease, transform 0.2s ease;
    touch-action: manipulation;
}

.section-button:hover {
    background-color: #333;
    transform: translateY(-2px);
}

.section-button:active {
    background-color: #000;
    transform: translateY(0);
}

@media (max-width: 1200px) {
    .collection-title {
        font-size: 2rem;
    }
    
    .overlay-text {
        padding: 0;
    }
    
    .image-overlay {
        padding: 30px;
    }
    
    .image-text-container {
        gap: 60px;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
}

@media (max-width: 900px) {
    .collection-title {
        font-size: 1.5rem;
    }
    
    .collection-name {
        font-size: 0.8rem;
    }
    
    .image-text-container {
        flex-direction: column;
        gap: 40px;
    }
    
    .image-text-section.reverse .image-text-container {
        flex-direction: column;
    }

    .section-outdoors .image-text-container {
        flex-direction: column-reverse;
    }
    
    .image-text-image {
        flex: 0 0 auto;
        width: 100%;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    body {
        min-height: calc(700px + 225vw + 320vw);
    }
    
    .site-header {
        padding: 14px 20px;
    }

    .header-inner {
        flex-direction: row;
        justify-content: space-between;
        padding: 0 !important;
        gap: 16px;
    }

    .hamburger {
        display: flex;
    }

    .header-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        max-width: 300px;
        height: 100vh;
        background: rgba(0, 0, 0, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: flex-start;
        padding: 80px 30px 30px;
        gap: 24px;
        transition: right 0.3s ease;
        z-index: 3;
    }

    .header-nav.active {
        right: 0;
    }

    .header-nav a {
        font-size: 1.1rem;
        padding: 12px 0;
        width: 100%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    /* Touch targets for dots */
    .bg-dots {
        gap: 12px;
    }

    .dot {
        width: 10px;
        height: 10px;
        padding: 8px;
        margin: 0;
    }

    /* Touch targets for social links */
    .links a {
        padding: 12px;
        margin: -12px;
    }

    /* Dual image section stacking */
    .dual-image-section {
        flex-direction: column;
    }

    .image-box {
        width: 100%;
        aspect-ratio: 4 / 3;
    }

    h1 {
        font-size: 2.5rem;
        font-weight: 700;
    }

    .main-words {
        height: 180px;
    }
    
    p {
        font-size: 1rem;
    }
    
    .collection-title {
        font-size: 1.2rem;
        margin-bottom: 12px;
        word-wrap: break-word;
    }
    
    .collection-name {
        font-size: 0.75rem;
        margin-bottom: 6px;
    }
    
    .image-overlay {
        padding: 20px;
    }
    
    .shop-button {
        font-size: 0.85rem;
        padding: 6px 20px;
    }
    
    .image-text-section {
        padding: 0 0 40px 0;
    }
    
    .section-fitness {
        margin-top: 225vw;
        padding-top: 40px;
    }
    
    .image-text-container {
        padding: 0 20px;
        gap: 30px;
    }
    
    .section-title {
        font-size: 1.75rem;
        word-wrap: break-word;
    }
    
    .section-description {
        font-size: 1rem;
        word-wrap: break-word;
    }
    
    .section-button {
        font-size: 0.85rem;
        padding: 10px 24px;
    }
}

@media (max-width: 480px) {
    body {
        min-height: calc(700px + 225vw + 320vw);
    }

    h1 {
        font-size: 2rem;
    }

    .main-words {
        height: 150px;
    }

    .bottom-section {
        bottom: 60px;
    }

    .bottom-section p {
        font-size: 0.9rem;
    }

    .links img {
        width: 36px;
        height: 36px;
    }

    .collection-title {
        font-size: 1rem;
    }

    .collection-name {
        font-size: 0.7rem;
    }

    .image-overlay {
        padding: 16px;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .section-description {
        font-size: 0.95rem;
        line-height: 1.6;
    }

    .section-label {
        font-size: 0.8rem;
    }

    .image-text-container {
        padding: 0 16px;
        gap: 24px;
    }

    .image-text-section {
        padding: 0 0 30px 0;
    }

    .section-fitness {
        padding-top: 30px;
    }
}