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

html, body {
    width: 100%;
    overflow-x: hidden;
    background-color: #060b1a;
    color: #fff;
    font-family: 'PingFang HK', 'Microsoft JhengHei', 'Noto Sans TC', Arial, sans-serif;
}

.hero {
    position: relative;
    width: 100%;
    min-height: 100vh;
    min-height: 100svh;
    background-image: url('image/dekstop-background.webp');
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow: hidden;
}

.logo {
    position: relative;
    z-index: 20;
    display: inline-flex;
    align-items: center;
    gap: 14px;
    margin-top: clamp(20px, 2.5vw, 38px);
    text-decoration: none;
    color: #fff;
}

.logo-img {
    height: clamp(40px, 3.5vw, 56px);
    width: auto;
    flex-shrink: 0;
}

.buttons-wrapper {
    position: relative;
    z-index: 30;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: clamp(60px, 9vw, 150px);
    padding-bottom: clamp(20px, 2.5vw, 40px);
    transform: translate(7px, clamp(-180px, -16vh, -80px));
}

.cta-btn {
    display: block;
    text-decoration: none;
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
    transition: transform 0.2s, filter 0.2s;
}

.cta-btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: -80%;
    width: 50%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.45),
        transparent
    );
    transform: skewX(-18deg);
    pointer-events: none;
}

.cta-btn:hover {
    transform: translateY(-4px);
    filter: brightness(1.12);
}

.cta-btn:hover::after {
    animation: shimmerSwipe 0.65s ease forwards;
}

.cta-btn img {
    display: block;
    width: clamp(140px, 13vw, 220px);
    height: auto;
}

.phones-wrapper {
    position: relative;
    z-index: 15;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: clamp(24px, 3vw, 48px);
    flex: 1;
    padding-top: clamp(20px, 2.5vw, 40px);
    padding-bottom: clamp(100px, 12vw, 200px);
}

.phone {
    display: block;
    text-decoration: none;
    flex-shrink: 0;
}

.phone img {
    display: block;
    width: clamp(180px, 18vw, 300px);
    height: auto;
    filter: drop-shadow(0 20px 60px rgba(0, 0, 0, 0.9));
    transition: filter 0.45s ease;
}

.dragon {
    position: absolute;
    top: 45%;
    left: 0;
    transform: translateY(-50%);
    z-index: 25;
    width: 40%;
    max-width: 720px;
    pointer-events: none;
}

.dragon img {
    display: block;
    width: 100%;
    height: auto;
    filter: drop-shadow(0 0 40px rgba(45, 140, 94, 0.5))
            drop-shadow(0 18px 12px rgba(45, 140, 94, 0.25));
    transition: filter 0.45s ease;
    animation: animalPulse 2.4s ease-in-out infinite;
}

.tiger {
    position: absolute;
    top: 42%;
    right: clamp(20px, 4vw, 80px);
    transform: translateY(-50%);
    z-index: 25;
    width: 37%;
    max-width: 660px;
    pointer-events: none;
}

.tiger img {
    display: block;
    width: 100%;
    height: auto;
    filter: drop-shadow(0 0 40px rgba(168, 212, 245, 0.45))
            drop-shadow(0 18px 12px rgba(168, 212, 245, 0.22));
    transition: filter 0.45s ease;
    animation: animalPulse 2.4s ease-in-out infinite;
    animation-delay: -1.2s;
}

.footer {
    position: relative;
    z-index: 30;
    width: 100%;
    background: rgba(4, 7, 18, 0.98);
    border-top: 1px solid rgba(201, 162, 39, 0.22);
    padding: 36px 48px 28px;
}

.footer-inner {
    max-width: 1100px;
    margin: 0 auto;
}

.social-row {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 28px;
}

.social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.13);
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: background 0.25s, border-color 0.25s, color 0.25s, transform 0.25s;
    flex-shrink: 0;
}

.social-btn:hover {
    background: rgba(201, 162, 39, 0.2);
    border-color: #c9a227;
    color: #c9a227;
    transform: translateY(-3px);
}

.social-btn svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.seo-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px 20px;
    margin-bottom: 20px;
}

.seo-nav a {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.38);
    text-decoration: none;
    transition: color 0.2s;
}

.seo-nav a:hover { color: #c9a227; }

.seo-text {
    text-align: center;
    font-size: 0.74rem;
    color: rgba(255, 255, 255, 0.22);
    line-height: 1.8;
    max-width: 820px;
    margin: 0 auto 20px;
}

.footer-copy {
    text-align: center;
    font-size: 0.71rem;
    color: rgba(255, 255, 255, 0.2);
}

@keyframes shimmerSwipe {
    0%   { left: -80%; }
    100% { left: 160%; }
}

@keyframes animalPulse {
    0%, 100% { transform: translateX(0px); }
    50%       { transform: translateX(3px); }
}

@media (hover: hover) {

    .phone:nth-child(1):hover img {
        filter: drop-shadow(0 20px 60px rgba(0, 0, 0, 0.9))
                drop-shadow(0 0 28px rgba(45, 200, 100, 0.75));
    }
    .hero:has(.phone:nth-child(1):hover) .dragon img,
    .hero:has(.cta-btn:nth-child(1):hover) .dragon img {
        filter: drop-shadow(0 0 70px rgba(45, 200, 100, 1))
                drop-shadow(0 0 30px rgba(45, 140, 94, 0.8));
    }

    .phone:nth-child(2):hover img {
        filter: drop-shadow(0 20px 60px rgba(0, 0, 0, 0.9))
                drop-shadow(0 0 28px rgba(168, 212, 245, 0.75));
    }
    .hero:has(.phone:nth-child(2):hover) .tiger img,
    .hero:has(.cta-btn:nth-child(2):hover) .tiger img {
        filter: drop-shadow(0 0 70px rgba(168, 212, 245, 1))
                drop-shadow(0 0 30px rgba(100, 180, 255, 0.8));
    }
}

@media (max-width: 768px) {

    .hero {
        background-image: url('image/mobile-background.webp');
        background-position: top center;
    }

    .logo {
        margin-top: 0px;
        gap: 10px;
        transform: translate(0px, 20px);
    }

    .logo-img {
        height: clamp(34px, 10.5vw, 45px);
    }

    .phones-wrapper {
        gap: 12px;
        padding-top: 35px;
        padding-bottom: 330px;
        padding-left: 12px;
        padding-right: 12px;
        align-items: center;
        justify-content: center;
    }

    .phone img {
        width: clamp(138px, 42vw, 182px);
    }

    .phone:nth-child(1) {
        margin-top: 0;
        margin-left: 0;
    }

    .phone:nth-child(2) {
        margin-top: 0;
        margin-right: 0;
    }

    .dragon {
        top: auto;
        bottom: 32%;
        left: clamp(-40px, -7vw, -18px);
        transform: none;
        width: 64%;
        max-width: clamp(220px, 64vw, 370px);
    }

    .tiger {
        top: auto;
        bottom: 29%;
        right: clamp(-50px, -9vw, -25px);
        transform: none;
        width: 65%;
        max-width: clamp(234px, 65vw, 460px);
    }

    .buttons-wrapper {
        position: absolute;
        bottom: clamp(90px, 28vw, 120px);
        left: 0;
        right: 0;
        gap: clamp(20px, 9vw, 40px);
        padding: 0 16px;
        transform: translateX(0px);
    }

    .cta-btn img {
        width: clamp(118px, 36vw, 155px);
    }

    .cta-btn::after {
        animation: shimmerSwipe 2.2s ease infinite;
    }

    .cta-btn:nth-child(2)::after {
        animation-delay: 1.1s;
    }

    .footer {
        padding: 28px 20px 22px;
    }

    .social-btn {
        width: 40px;
        height: 40px;
    }

    .social-btn svg {
        width: 18px;
        height: 18px;
    }

    .social-row { gap: 12px; }
}

@media (max-width: 400px) {

    .phones-wrapper {
        gap: 8px;
        padding-bottom: 230px;
    }

    .phone img  { width: 144px; }
    .dragon     { width: 55%; }
    .tiger      { width: 47%; }
}

@media (min-width: 1440px) {

    .logo-img   { height: 64px; }
    .dragon     { width: 38%; }
    .tiger      { width: 35%; }
}

@media (min-width: 1152px) and (max-width: 1750px) {

    .logo {
        margin-top: clamp(16px, 2.5vw, 30px);
    }

    .logo-img {
        height: 52px;
    }

    .phones-wrapper {
        padding-top: clamp(20px, 2.5vw, 32px);
        padding-bottom: clamp(100px, 12vw, 160px);
    }

    .phone img {
        width: clamp(180px, 18vw, 240px);
    }

    .cta-btn img {
        width: clamp(140px, 13vw, 176px);
    }

    .buttons-wrapper {
        gap: clamp(60px, 9vw, 120px);
    }

    .dragon { width: 38%; }
    .tiger  { width: 35%; }
}