/* =========================
   RESET
========================= */

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
}

/* =========================
   BASE
========================= */

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Segoe UI", sans-serif;
    background: #000;
    overflow-x: hidden;
    /* scroll-snap desktop */
    scroll-snap-type: y mandatory;
}

section {
    scroll-snap-align: start;
    scroll-margin-top: 100px;
}

/* =========================
   HEADER
========================= */

.header {
    position: fixed;
    top: 10px;
    left: 0;
    width: 100%;
    height: 78px;
    background: linear-gradient(rgba(255, 255, 255, 0.95), rgba(240, 242, 247, 0.95));
    z-index: 9999;
    display: flex;
    align-items: flex-start;
    padding: 12px 38px;
}

/* =========================
   LOGO
========================= */
.navbar {
    display: flex;
    align-items: flex-start;
    /* thay vì center */

}

.logo {
    position: relative;
    top: -10px;
    /* logo tràn lên */
    z-index: 9999;
    flex-shrink: 0;
}

.logo img {
    height: 100px;
}

/* =========================
   NAVIGATION
========================= */
.nav {
    display: flex;
    align-items: center;
    gap: 52px;

    margin-left: 50px;
    /* cách logo 50px */
    margin-top: 8px;
}

.nav-item {
    position: relative;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: 0.3s;
}

.nav-item::before {
    content: "✦";
    position: absolute;
    left: -18px;
    top: 12px;
    color: #6b7192;
    font-size: 11px;
    opacity: 0.8;
}

.nav-title {
    color: #4c5475;
    font-size: 15px;
    font-weight: 700;
    line-height: 1;
}

.nav-sub {
    margin-top: 4px;
    font-size: 11px;
    color: #8d95ae;
}

.nav-item.active .nav-title,
.nav-item:hover .nav-title {
    color: #39b46f;
}

.nav-item.active .nav-sub,
.nav-item:hover .nav-sub {
    color: #39b46f;
}

.nav-item:hover {
    transform: translateY(-2px);
}

/* =========================
   DROPDOWN
========================= */

.dropdown {
    position: relative;
}

.dropdown>a {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
}

.dropdown-menu {
    position: absolute;
    top: 62px;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    min-width: 180px;
    padding: 10px;
    border-radius: 14px;
    background: rgba(18, 25, 40, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.35);
    opacity: 0;
    visibility: hidden;
    transition: 0.28s;
    z-index: 999;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-menu a {
    display: block;
    padding: 12px 16px;
    border-radius: 10px;
    text-decoration: none;
    color: white;
    font-size: 14px;
    font-weight: 600;
    transition: 0.25s;
}

.dropdown-menu a:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #7dffb1;
    transform: translateX(4px);
}

/* =========================
   RIGHT BUTTONS
========================= */

.right-buttons {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 10px;
}

.top-btn {
    height: 42px;
    padding: 0 18px;
    border-radius: 10px;
    border: none;
    background: linear-gradient(#3d537f, #24385d);
    color: white;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: 0.3s;
    box-shadow: 0 5px 18px rgba(0, 0, 0, 0.18);
}

.top-btn:hover {
    transform: translateY(-2px);
    filter: brightness(1.08);
}

/* =========================
   HAMBURGER
========================= */

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    cursor: pointer;
    margin-left: 20px;
    z-index: 10001;
    flex-shrink: 0;
    background: none;
    border: none;
    padding: 0;
}

.hamburger span {
    display: block;
    width: 26px;
    height: 2px;
    background: #3d5073;
    border-radius: 4px;
    transition: all 0.35s ease;
    transform-origin: center;
}

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

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

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

/* =========================
   MOBILE NAV OVERLAY
========================= */

.nav-mobile-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    z-index: 9998;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.nav-mobile-overlay.show {
    display: block;
    opacity: 1;
}

/* =========================
   USER POPUP
========================= */

.user-area {
    position: relative;
}

.auth-popup {
    position: absolute;
    top: 58px;
    right: 0;
    width: 320px;
    background: rgba(20, 25, 40, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
    display: none;
    z-index: 99999;
}

.auth-popup.show {
    display: block;
}

.auth-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 18px;
}

.auth-tab {
    flex: 1;
    height: 42px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    background: #26385f;
    color: white;
    font-weight: 700;
}

.auth-tab.active {
    background: #42c97b;
    color: #111;
}

.auth-content {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.hidden {
    display: none;
}

.auth-content input {
    height: 46px;
    border: none;
    outline: none;
    border-radius: 10px;
    padding: 0 14px;
    background: #101828;
    color: white;
    font-size: 15px;
}

.auth-submit {
    height: 46px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    background: linear-gradient(45deg, #4cff96, #38d67a);
    color: #111;
    font-size: 16px;
    font-weight: 800;
    transition: 0.3s;
}

.auth-submit:hover {
    transform: translateY(-2px);
}

/* =========================
   MUSIC BUTTON
========================= */

.music-btn {
    width: 54px;
    height: 54px;
    padding: 0 !important;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    outline: none;
    cursor: pointer;
}

.music-bars {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 3px;
}

.music-bars span {
    width: 3px;
    background: #162447;
    border-radius: 10px;
    animation: musicWave 1s infinite ease-in-out;
}

.music-bars span:nth-child(1) {
    height: 8px;
    animation-delay: 0s;
}

.music-bars span:nth-child(2) {
    height: 18px;
    animation-delay: 0.15s;
}

.music-bars span:nth-child(3) {
    height: 12px;
    animation-delay: 0.3s;
}

.music-bars span:nth-child(4) {
    height: 20px;
    animation-delay: 0.45s;
}

@keyframes musicWave {
    0% {
        transform: scaleY(0.45);
        opacity: 0.5;
    }

    50% {
        transform: scaleY(1);
        opacity: 1;
    }

    100% {
        transform: scaleY(0.45);
        opacity: 0.5;
    }
}

.music-btn.paused .music-bars span {
    animation-play-state: paused;
    opacity: 0.4;
}

/* =========================
   HERO
========================= */

.hero {
    position: relative;
    width: 100%;
    min-height: 100vh;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
    filter: brightness(0.82) saturate(1.1);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(rgba(0, 0, 0, 0.15), rgba(0, 0, 0, 0.45));
    z-index: 2;
}

/* =========================
   CENTER CONTENT
========================= */

.center-content {
    position: absolute;
    top: 58%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    z-index: 5;
}

.gold-line {
    width: 260px;
    height: 20px;
    margin: 0 auto 20px auto;
    position: relative;
}

.gold-line::before {
    content: '';
    position: absolute;
    left: 0;
    top: 9px;
    width: 100%;
    height: 2px;
    background: linear-gradient(to right, transparent, #d8b867, transparent);
}

.title {
    font-size: 68px;
    font-weight: 900;
    line-height: 1.08;
    color: #f7f1d9;
    text-shadow: 3px 3px 0 #738349, 0 4px 12px rgba(0, 0, 0, 0.45);
}

.subtitle {
    margin-top: 18px;
    font-size: 34px;
    font-weight: 900;
    color: #f7f1d9;
    text-shadow: 2px 2px 0 #738349, 0 4px 10px rgba(0, 0, 0, 0.45);
}

/* =========================
   PLAY BUTTON
========================= */

.play-wrapper {
    margin-top: 42px;
    display: flex;
    justify-content: center;
    overflow: visible;
}

.play-button {
    width: 82px;
    height: 82px;
    border-radius: 50%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: 0.3s;
    background: rgba(0, 0, 0, 0.35);
    overflow: visible;
}

.play-button:hover {
    transform: scale(1.08);
}

.play-button::before {
    content: '';
    position: absolute;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 2px solid rgba(255, 235, 180, 0.55);
    border-top-color: white;
    animation: rotateRing 5s linear infinite;
}

.play-triangle {
    width: 0;
    height: 0;
    border-top: 13px solid transparent;
    border-bottom: 13px solid transparent;
    border-left: 20px solid white;
    margin-left: 5px;
    position: relative;
    z-index: 2;
}

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

    to {
        transform: rotate(360deg);
    }
}

/* =========================
   SCROLL INDICATOR
========================= */

.scroll {
    position: absolute;
    left: 50%;
    bottom: 38px;
    transform: translateX(-50%);
    width: 34px;
    height: 54px;
    cursor: pointer;
    z-index: 50;
}

.scroll:hover {
    opacity: 0.75;
}

.scroll::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    width: 1px;
    height: 34px;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.95));
    transform: translateX(-50%);
}

.scroll::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    width: 14px;
    height: 14px;
    border-right: 2px solid white;
    border-bottom: 2px solid white;
    transform: translateX(-50%) rotate(45deg);
    animation: scrollArrow 1.8s infinite;
}

@keyframes scrollArrow {
    0% {
        transform: translateX(-50%) translateY(0) rotate(45deg);
        opacity: 0;
    }

    30% {
        opacity: 1;
    }

    60% {
        opacity: 1;
    }

    100% {
        transform: translateX(-50%) translateY(10px) rotate(45deg);
        opacity: 0;
    }
}

/* =========================
   VIDEO POPUP
========================= */

.video-popup {
    position: fixed;
    inset: 0;
    z-index: 999999;
    display: none;
    align-items: center;
    justify-content: center;
}

.video-popup.show {
    display: flex;
}

.video-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.82);
}

.video-container {
    position: relative;
    width: 75vw;
    max-width: 1100px;
    border-radius: 20px;
    overflow: hidden;
    z-index: 2;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
    animation: popupShow 0.35s ease;
}

.video-container video {
    width: 100%;
    display: block;
    background: black;
}

.video-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 42px;
    height: 42px;
    border: none;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.65);
    color: white;
    font-size: 20px;
    cursor: pointer;
    z-index: 5;
    transition: 0.3s;
}

.video-close:hover {
    transform: scale(1.08);
    background: rgba(255, 255, 255, 0.18);
}

@keyframes popupShow {
    from {
        opacity: 0;
        transform: scale(0.92);
    }

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

/* =========================
   SECTIONS
========================= */

.news-section {
    height: 700px;
    position: relative;
    padding: 140px 80px;
    background: url("img/2-2.jpg") center/cover no-repeat;
}

.pet-section {
    height: 945px;
    position: relative;
    padding: 140px 80px;
    background: url("img/bg_1-3-2.jpg") center/cover no-repeat;
}

.class-section {
    height: 945px;
    position: relative;
    padding: 140px 80px;
    background: url("img/bg_1-4.jpg") center/cover no-repeat;
}

.guardian-section {
    height: 945px;
    position: relative;
    padding: 140px 80px;
    background: url("img/bg_1-5.jpg") center/cover no-repeat;
}

/* title images */

.class-title-text {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
}

.news-title-text {
    position: absolute;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
}

/* =========================
   CLASS SWIPER
========================= */

.classSwiper {
    width: 100%;
    height: 700px;
}

.swiper-slide {
    display: flex;
    align-items: center;
}

.class-content {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 80px;
    padding: 0 450px 0 120px;
    flex-direction: row-reverse;
}

/* LEFT */

.class-left {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    max-width: 520px;
    transform: translateY(-120px);
    flex-shrink: 0;
}

.class-title {
    font-size: 72px;
    font-weight: 900;
    color: #3d5073;
    margin-bottom: 15px;
    text-align: left;
}

.class-sub {
    display: inline-block;
    background: #575f6d;
    color: #fff;
    padding: 10px 22px;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 25px;
    text-align: left;
}

.class-desc {
    width: 100%;
    padding: 18px 0;
    font-size: 18px;
    line-height: 30px;
    color: #575f6d;
    border-top: 1px solid #a4a8ae;
    border-bottom: 1px solid #a4a8ae;
    text-align: left;
}

.class-img {
    width: 100%;
    padding: 18px 0;
    text-align: left;
}

/* RIGHT */

.class-right {
    flex: 1;
    transform: translateX(800px) translateY(-150px);
    display: flex;
    justify-content: center;
    align-items: center;
}

.swiper-slide:nth-child(4) .class-right img {
    transform: translateX(-120px);
}

.class-right img {
    width: 1500px;
    object-fit: contain;
    display: block;
}

/* =========================
   CLASS NAV CIRCLES
========================= */

.class-nav-circle {
    position: absolute;
    bottom: 150px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 24px;
    z-index: 20;
}

.class-circle {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    overflow: hidden;
    cursor: pointer;
    border: 3px solid transparent;
    transition: 0.35s;
    background: rgba(255, 255, 255, 0.05);
}

.class-circle img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.class-circle:hover {
    transform: translateY(-6px) scale(1.08);
    border-color: white;
}

.class-circle.active {
    border-color: #f3d58d;
    box-shadow: 0 0 25px rgba(255, 220, 120, 0.55);
    transform: scale(1.1);
}

/* =========================
   CLASS ARROWS
========================= */

.class-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 20;
    cursor: pointer;
    transition: 0.3s;
}

.class-arrow img {
    width: 70px;
    display: block;
}

.class-arrow:hover {
    transform: translateY(-50%) scale(1.1);
}

.class-prev {
    left: 40px;
}

.class-next {
    right: 40px;
}

/* =========================
   SLIDE CONTENT ANIMATION
========================= */

.class-img,
.class-title,
.class-sub,
.class-desc {
    opacity: 0;
    transform: translateY(40px);
}

.swiper-slide-active .class-title {
    animation: fadeSlideUp 0.45s ease forwards;
}

.swiper-slide-active .class-sub {
    animation: fadeSlideUp 0.45s ease 0.12s forwards;
}

.swiper-slide-active .class-desc {
    animation: fadeSlideUp 0.45s ease 0.24s forwards;
}

.swiper-slide-active .class-img {
    animation: fadeSlideUp 0.45s ease 0.36s forwards;
}

@keyframes fadeSlideUp {
    from {
        opacity: 0;
        transform: translateX(40px);
    }

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

/* =========================
   BACK TO TOP
========================= */

.btn_top {
    position: fixed;
    z-index: 1000;
    right: 50px;
    bottom: 50px;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    overflow: hidden;
    background: transparent;
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
}

.btn_top.visible {
    opacity: 1;
    visibility: visible;
}

.btn_top img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    display: block;
}

/* =========================
   DESKTOP BREAKPOINT (≤1200px)
========================= */

@media (max-width: 1200px) {
    .nav {
        display: none;
    }

    .title {
        width: 90vw;
    }

    .header {
        padding: 0 20px;
    }
}

/* =========================
   TABLET (≤768px)
========================= */

@media (max-width: 768px) {

    /* Tắt scroll-snap — nguyên nhân kẹt trang trên mobile */
    body {
        scroll-snap-type: none;
    }

    section {
        scroll-snap-align: none;
    }

    /* HEADER */

    .header {
        top: 0;
        height: 64px;
        padding: 0 16px;
        align-items: center;
        justify-content: space-between;
    }

    .logo img {
        height: 42px;
    }

    .hamburger {
        display: flex;
    }

    .right-buttons {
        margin-top: 0;
        gap: 8px;
    }

    .top-btn {
        height: 36px;
        padding: 0 12px;
        font-size: 12px;
    }

    .music-btn {
        width: 42px;
        height: 42px;
    }

    /* NAV DRAWER */

    .nav {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 72vw;
        max-width: 300px;
        height: 100vh;
        background: rgba(240, 242, 247, 0.98);
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        padding: 80px 0 40px 0;
        z-index: 9999;
        box-shadow: 6px 0 30px rgba(0, 0, 0, 0.15);
        transform: translateX(-100%);
        transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        margin: 0;
    }

    .nav.open {
        display: flex;
        transform: translateX(0);
    }

    .nav-item {
        width: 100%;
        flex-direction: row;
        align-items: center;
        justify-content: flex-start;
        gap: 12px;
        padding: 14px 24px;
        border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    }

    .nav-item::before {
        display: none;
    }

    .nav-sub {
        font-size: 11px;
        margin-top: 0;
    }

    /* Dropdown trong mobile */

    .dropdown-menu {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        background: rgba(0, 0, 0, 0.04);
        box-shadow: none;
        border: none;
        border-radius: 0;
        padding: 0 0 0 40px;
        display: none;
    }

    .dropdown.open .dropdown-menu {
        display: block;
    }

    .dropdown-menu a {
        color: #4c5475;
        font-size: 13px;
        padding: 10px 16px;
    }

    .dropdown-menu a:hover {
        transform: none;
    }

    /* HERO */

    .hero {
        min-height: 100svh;
    }

    .center-content {
        top: 55%;
        width: 90vw;
    }

    .title {
        font-size: 28px;
        line-height: 1.2;
    }

    .subtitle {
        font-size: 16px;
        margin-top: 12px;
    }

    .play-button {
        width: 64px;
        height: 64px;
    }

    /* SECTIONS */

    .news-section,
    .pet-section,
    .class-section,
    .guardian-section {
        height: auto;
        min-height: 600px;
        padding: 80px 16px 120px;
    }

    /* CLASS SWIPER */

    .classSwiper {
        height: auto;
        min-height: 500px;
    }

    .class-content {
        padding: 0 16px;
        gap: 0;
        flex-direction: column;
        /* left (text) lên trên, right (ảnh) xuống dưới */
        align-items: center;
        justify-content: center;
        position: relative;
        overflow: hidden;
    }

    /* Ép text lên trên */
    .class-left {
        order: 1;
        transform: translateY(0);
        max-width: 100%;
        width: 100%;
        z-index: 2;
        padding: 20px 0;
    }

    /* Ép ảnh xuống dưới (làm nền mờ nên dùng absolute, order không ảnh hưởng) */
    .class-right {
        order: 2;
    }

    .class-title {
        font-size: 36px;
        margin-bottom: 10px;
    }

    .class-sub {
        font-size: 14px;
        padding: 7px 14px;
        margin-bottom: 14px;
    }

    .class-desc {
        font-size: 14px;
        line-height: 24px;
        padding: 12px 0;
    }

    .class-img img {
        max-width: 100%;
    }

    /* Ảnh nhân vật làm nền mờ — absolute để không đẩy text xuống */

    .class-right {
        position: absolute !important;
        right: -30px;
        top: 50%;
        transform: translateY(-50%) !important;
        width: 55vw;
        max-width: 280px;
        opacity: 0.18;
        pointer-events: none;
        z-index: 1;
    }

    .class-right img {
        width: 100%;
    }

    /* Arrows */

    .class-arrow img {
        width: 42px;
    }

    .class-prev {
        left: 10px;
    }

    .class-next {
        right: 10px;
    }

    /* Nav circles */

    .class-nav-circle {
        bottom: 20px;
        gap: 14px;
    }

    .class-circle {
        width: 54px;
        height: 54px;
    }

    /* Title images */

    .class-title-text img,
    .news-title-text img {
        max-width: 70vw;
        height: auto;
    }

    .class-title-text {
        top: 14px;
    }

    .news-title-text {
        top: 30px;
    }

    /* Video popup */

    .video-container {
        width: 95vw;
    }

    /* Back to top */

    .btn_top {
        right: 16px;
        bottom: 20px;
        width: 42px;
        height: 42px;
    }
}

/* =========================
   MOBILE (≤480px)
========================= */

@media (max-width: 480px) {

    /* HEADER */

    .header {
        height: 56px;
        padding: 0 12px;
    }

    .logo img {
        height: 36px;
    }

    .top-btn {
        height: 32px;
        padding: 0 10px;
        font-size: 11px;
        border-radius: 8px;
    }

    .right-buttons {
        gap: 6px;
    }

    /* HERO */

    .title {
        font-size: 22px;
    }

    .subtitle {
        font-size: 13px;
    }

    .play-button {
        width: 54px;
        height: 54px;
    }

    .play-triangle {
        border-top: 10px solid transparent;
        border-bottom: 10px solid transparent;
        border-left: 16px solid white;
    }

    /* CLASS */

    .class-title {
        font-size: 28px;
    }

    .class-sub {
        font-size: 12px;
        padding: 6px 12px;
    }

    .class-desc {
        font-size: 13px;
        line-height: 22px;
    }

    .class-circle {
        width: 44px;
        height: 44px;
    }

    .class-nav-circle {
        gap: 10px;
        bottom: 14px;
    }

    .class-arrow img {
        width: 32px;
    }

    .class-prev {
        left: 4px;
    }

    .class-next {
        right: 4px;
    }

    .class-right {
        width: 45vw;
        opacity: 0.15;
    }

    /* Back to top */

    .btn_top {
        right: 12px;
        bottom: 16px;
        width: 38px;
        height: 38px;
    }
}
.class-img video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.class-img {
    width: 400px;
    height: auto;
    overflow: hidden;
    border-radius: 12px;
}