:root {
    --bg: #050505;
    --panel: #0b0a08;
    --panel-soft: #11100d;
    --line: rgba(210, 178, 135, 0.22);
    --text: #f5eee6;
    --muted: #a9a099;
    --dim: #756d66;
    --gold: #c7a77d;
    --gold-soft: #ead7bd;
    --olive: #78806c;
    --white-line: rgba(255, 255, 255, 0.18);
    --max: 1180px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scrollbar-color: rgba(199, 167, 125, 0.72) #070604;
    scrollbar-width: thin;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    line-height: 1.7;
}

@media (hover: hover) and (pointer: fine) {
    html,
    body {
        min-width: 1366px;
    }

    .site-header {
        min-width: 1366px;
        padding-right: 56px;
        padding-left: 56px;
    }

    .site-nav {
        gap: 40px;
    }
}

::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: #070604;
    border-left: 1px solid rgba(199, 167, 125, 0.12);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, rgba(234, 215, 189, 0.82), rgba(120, 128, 108, 0.72));
    border: 3px solid #070604;
    border-radius: 999px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--gold-soft), var(--gold));
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    display: block;
    max-width: 100%;
}

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 50;
    width: 100%;
    height: 84px;
    display: flex;
    align-items: center;
    gap: 34px;
    padding: 0 clamp(22px, 5vw, 56px);
    color: #fff;
    background: rgba(5, 5, 5, 0.24);
    border-bottom: 1px solid transparent;
    transition: background 0.25s ease, border-color 0.25s ease, height 0.25s ease;
}

.site-header.is-solid,
.site-header:hover {
    height: 74px;
    background: rgba(5, 5, 5, 0.92);
    border-bottom-color: var(--line);
    backdrop-filter: blur(16px);
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 178px;
    white-space: nowrap;
}

.brand-logo {
    display: block;
    width: auto;
    height: 44px;
    max-width: 210px;
    object-fit: contain;
    filter: brightness(0) invert(1) drop-shadow(0 1px 10px rgba(0, 0, 0, 0.45));
    opacity: 1;
}

.brand-en {
    font-size: 28px;
    line-height: 1;
    font-weight: 800;
    letter-spacing: 0;
}

.brand-cn {
    font-size: 24px;
    line-height: 1;
    font-weight: 700;
}

.site-nav {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(18px, 2.7vw, 40px);
    min-width: 0;
}

.site-nav > a,
.nav-item > a {
    display: flex;
    align-items: center;
    min-height: 74px;
    font-size: 15px;
    font-weight: 800;
    color: #f5f1eb;
    text-shadow: 0 1px 10px rgba(0, 0, 0, 0.45);
    white-space: nowrap;
}

.site-nav a:hover {
    color: var(--gold-soft);
}

.has-panel {
    position: relative;
}

.nav-panel {
    position: absolute;
    top: 100%;
    left: 50%;
    display: grid;
    grid-template-columns: repeat(2, minmax(96px, 1fr));
    gap: 10px 18px;
    min-width: 260px;
    padding: 20px;
    background: rgba(11, 10, 8, 0.96);
    border: 1px solid var(--line);
    opacity: 0;
    pointer-events: none;
    transform: translate(-50%, 12px);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.has-panel:hover .nav-panel,
.has-panel:focus-within .nav-panel {
    opacity: 1;
    pointer-events: auto;
    transform: translate(-50%, 0);
}

.nav-panel a {
    color: var(--muted);
    font-size: 14px;
    white-space: nowrap;
}

.search {
    width: 188px;
    height: 36px;
    display: flex;
    align-items: center;
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 999px;
    padding: 0 10px 0 16px;
}

.search input {
    width: 100%;
    min-width: 0;
    border: 0;
    outline: 0;
    background: transparent;
    color: #fff;
    font-size: 12px;
}

.search input::placeholder {
    color: rgba(255, 255, 255, 0.58);
}

.search button {
    width: 18px;
    height: 18px;
    border: 0;
    background: transparent;
    position: relative;
    cursor: pointer;
}

.search button::before {
    content: "";
    position: absolute;
    inset: 2px 4px 4px 2px;
    border: 1.5px solid rgba(255, 255, 255, 0.75);
    border-radius: 50%;
}

.search button::after {
    content: "";
    position: absolute;
    right: 1px;
    bottom: 1px;
    width: 7px;
    height: 1.5px;
    background: rgba(255, 255, 255, 0.75);
    transform: rotate(45deg);
}

.menu-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border: 1px solid var(--white-line);
    background: rgba(255, 255, 255, 0.04);
    padding: 10px;
}

.menu-toggle span {
    display: block;
    height: 2px;
    margin: 5px 0;
    background: #fff;
}

.hero {
    position: relative;
    min-height: 100svh;
    overflow: hidden;
    background: #000;
}

.hero + .hero {
    display: none;
}

.hero-slide {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    min-height: 100svh;
    padding: 110px clamp(28px, 8vw, 132px) 92px;
    background-position: center;
    background-size: cover;
    opacity: 0;
    transform: scale(1.02);
    transition: opacity 0.65s ease, transform 1.1s ease;
}

.hero-slide::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(90deg, rgba(0, 0, 0, 0.72) 0%, rgba(0, 0, 0, 0.38) 46%, rgba(0, 0, 0, 0.18) 100%),
        linear-gradient(0deg, rgba(0, 0, 0, 0.66), rgba(0, 0, 0, 0.06) 46%);
}

.hero-slide.is-active {
    opacity: 1;
    transform: scale(1);
}

.hero-content {
    position: relative;
    z-index: 1;
    width: min(820px, 92vw);
    padding-top: 34px;
}

.eyebrow,
.section-kicker {
    margin: 0 0 14px;
    color: var(--gold);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0;
}

.hero h1 {
    margin: 0;
    color: var(--gold-soft);
    font-family: Georgia, "Songti SC", serif;
    font-size: 64px;
    line-height: 1.12;
    font-weight: 600;
    white-space: nowrap;
}

.hero h1 br {
    display: none;
}

.hero-copy {
    max-width: 520px;
    margin: 26px 0 42px;
    color: rgba(255, 255, 255, 0.86);
    font-size: clamp(16px, 1.4vw, 22px);
}

.line-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    min-width: 156px;
    min-height: 48px;
    padding: 0 24px;
    border: 1px solid rgba(255, 255, 255, 0.58);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.line-button:hover {
    color: #1b1208;
    border-color: var(--gold-soft);
    background: var(--gold-soft);
}

.line-button.small {
    min-width: 142px;
    min-height: 42px;
    padding: 0 18px;
    font-size: 13px;
}

.hero-control {
    position: absolute;
    right: clamp(28px, 6vw, 96px);
    bottom: 48px;
    z-index: 3;
    display: flex;
    align-items: center;
    gap: 0;
}

.hero-dots {
    display: flex;
    gap: 8px;
}

.hero-dots button {
    width: 8px;
    height: 8px;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
}

.hero-dots button.is-active {
    background: var(--gold-soft);
}

.section {
    width: 100%;
    margin: 0 auto;
    padding: 108px clamp(48px, 7vw, 132px);
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: clamp(34px, 5vw, 72px);
    border-bottom: 1px solid var(--line);
}

.section-aside h2,
.about-copy h2,
.craft-copy h2,
.join-band h2 {
    margin: 0 0 18px;
    color: var(--gold-soft);
    font-family: Georgia, "Songti SC", serif;
    font-size: clamp(28px, 3vw, 42px);
    line-height: 1.25;
    font-weight: 500;
}

.section-aside h2::after,
.craft-copy h2::after {
    content: "";
    display: block;
    width: 36px;
    height: 1px;
    margin-top: 18px;
    background: var(--gold);
}

.section-aside p,
.about-copy p,
.craft-copy p,
.join-band p {
    margin: 0 0 28px;
    color: var(--muted);
    font-size: 15px;
}

.tab-list {
    display: flex;
    gap: 8px;
    margin: 0 0 22px;
}

.tab-list button {
    height: 34px;
    padding: 0 14px;
    border: 1px solid var(--white-line);
    border-radius: 999px;
    background: transparent;
    color: var(--muted);
    cursor: pointer;
}

.tab-list button.is-active {
    border-color: var(--gold);
    color: var(--gold-soft);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.product-grid.is-hidden {
    display: none;
}

.product-card,
.news-card {
    position: relative;
    min-width: 0;
    overflow: hidden;
    background: var(--panel-soft);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.product-card {
    aspect-ratio: 0.72;
}

.product-card.compact {
    aspect-ratio: 0.8;
}

.product-card img,
.news-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.45s ease;
}

.product-card::after,
.news-card::after {
    content: "";
    position: absolute;
    inset: auto 0 0;
    height: 52%;
    background: linear-gradient(0deg, rgba(0, 0, 0, 0.78), rgba(0, 0, 0, 0));
}

.product-card span,
.product-card small {
    position: absolute;
    left: 18px;
    z-index: 1;
}

.product-card span {
    bottom: 46px;
    color: #fff;
    font-size: 18px;
    font-weight: 700;
}

.product-card small {
    bottom: 24px;
    color: var(--gold-soft);
    font-size: 10px;
    font-weight: 700;
}

.product-card:hover img,
.news-card:hover img {
    transform: scale(1.045);
}

.case-feature {
    position: relative;
    min-height: 420px;
    overflow: hidden;
    background: var(--panel-soft);
}

.case-feature img {
    width: 100%;
    height: 100%;
    min-height: 420px;
    object-fit: cover;
}

.case-feature::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(0deg, rgba(0, 0, 0, 0.62), transparent 42%);
}

.case-caption,
.case-arrows {
    position: absolute;
    z-index: 1;
    bottom: 34px;
}

.case-caption {
    left: 38px;
    display: grid;
    gap: 4px;
}

.case-caption span {
    color: #fff;
    font-size: 20px;
    font-weight: 700;
}

.case-caption small {
    color: var(--muted);
}

.case-arrows {
    right: 34px;
    display: flex;
    gap: 16px;
    color: #fff;
    font-size: 26px;
}

.about-band,
.service-band,
.join-band {
    width: min(var(--max), calc(100% - 48px));
    margin: 0 auto;
    border-bottom: 1px solid var(--line);
}

.about-band {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: clamp(34px, 7vw, 90px);
    padding: 96px 0;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    align-items: stretch;
}

.stat-grid div {
    min-height: 150px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 24px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.025);
}

.stat-grid strong {
    color: var(--gold-soft);
    font-family: Georgia, serif;
    font-size: clamp(30px, 4vw, 52px);
    line-height: 1.1;
    white-space: nowrap;
}

.stat-grid span {
    margin-top: 12px;
    color: var(--muted);
    font-size: 14px;
}

.craft-section {
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.72fr);
    align-items: center;
}

.craft-image {
    min-height: 430px;
    overflow: hidden;
}

.craft-image img {
    width: 100%;
    height: 100%;
    min-height: 430px;
    object-fit: cover;
    filter: grayscale(0.25);
}

.advantage-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin-top: 36px;
}

.advantage-list div {
    min-height: 132px;
    padding: 20px 16px;
    border: 1px solid var(--line);
    display: grid;
    align-content: center;
    gap: 8px;
}

.advantage-list strong {
    color: var(--gold-soft);
    font-size: 16px;
}

.advantage-list span {
    color: var(--muted);
    font-size: 13px;
}

.service-band {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: clamp(34px, 5vw, 72px);
    padding: 84px 0;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    align-items: stretch;
}

.service-item {
    min-height: 160px;
    display: grid;
    place-items: center;
    align-content: center;
    gap: 8px;
    padding: 18px;
    border: 1px solid var(--line);
    text-align: center;
    background: rgba(255, 255, 255, 0.02);
}

.service-icon {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border: 1px solid var(--gold);
    border-radius: 50%;
    color: var(--gold-soft);
    font-size: 20px;
    line-height: 1;
}

.service-item strong {
    color: #fff;
    font-size: 17px;
}

.service-item small {
    color: var(--muted);
    font-size: 13px;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

.news-card {
    min-height: 330px;
}

.news-card img {
    height: 230px;
}

.news-card span,
.news-card small {
    display: block;
    position: relative;
    z-index: 1;
    padding: 0 20px;
}

.news-card span {
    margin-top: 18px;
    color: #fff;
    font-weight: 700;
}

.news-card small {
    margin-top: 6px;
    color: var(--muted);
}

.join-band {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    padding: 88px 0;
}

.join-band > div {
    max-width: 720px;
}

.site-footer {
    width: min(var(--max), calc(100% - 48px));
    margin: 0 auto;
    padding: 58px 0 72px;
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: clamp(34px, 5vw, 72px);
    color: var(--muted);
    border-top: 1px solid var(--line);
}

.footer-brand {
    display: grid;
    gap: 10px;
    align-content: start;
}

.footer-logo {
    width: min(220px, 100%);
    height: auto;
    display: block;
    filter: brightness(0) invert(1);
}

.footer-brand strong {
    color: #fff;
    font-size: 24px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 28px;
}

.footer-links div {
    display: grid;
    gap: 8px;
    align-content: start;
}

.footer-links strong {
    margin-bottom: 8px;
    color: var(--gold-soft);
}

.footer-links a {
    color: var(--muted);
    font-size: 14px;
}

.footer-links a:hover {
    color: #fff;
}

.footer-records {
    grid-column: 1 / -1;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    padding-top: 8px;
    color: rgba(239, 228, 210, 0.42);
    font-size: 12px;
}

.footer-records a {
    color: rgba(239, 228, 210, 0.5);
}

.footer-records a:hover {
    color: var(--gold-soft);
}

.reveal-ready {
    opacity: 0;
    transform: translateY(34px);
    transition: opacity 0.72s ease, transform 0.72s ease;
    transition-delay: var(--reveal-delay, 0ms);
}

.reveal-ready.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.product-card.reveal-ready,
.news-card.reveal-ready,
.service-item.reveal-ready,
.advantage-list > div.reveal-ready,
.stat-grid > div.reveal-ready {
    transform: translateY(26px);
}

.product-card.reveal-ready.is-visible,
.news-card.reveal-ready.is-visible,
.service-item.reveal-ready.is-visible,
.advantage-list > div.reveal-ready.is-visible,
.stat-grid > div.reveal-ready.is-visible {
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    .hero-slide,
    .product-card img,
    .news-card img,
    .reveal-ready {
        transition: none;
    }

    .reveal-ready {
        opacity: 1;
        transform: none;
    }
}

@media (max-width: 1120px) and (pointer: coarse) {
    .site-header {
        gap: 18px;
    }

    .search {
        display: none;
    }

    .product-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 860px) and (pointer: coarse) {
    .site-header {
        height: 48px;
        padding: 0 14px;
        justify-content: space-between;
    }

    .brand {
        min-width: 0;
    }

    .brand-logo {
        height: 30px;
        max-width: 150px;
    }

    .brand-en {
        font-size: 22px;
    }

    .brand-cn {
        font-size: 20px;
    }

    .menu-toggle {
        display: block;
        width: 34px;
        height: 34px;
        padding: 7px;
    }

    .menu-toggle span {
        margin: 4px 0;
    }

    .site-nav {
        position: fixed;
        top: 48px;
        right: 0;
        left: 0;
        display: none;
        max-height: calc(100svh - 48px);
        overflow: auto;
        padding: 18px 24px 28px;
        background: rgba(5, 5, 5, 0.98);
        border-bottom: 1px solid var(--line);
    }

    .site-nav.is-open {
        display: grid;
        justify-content: stretch;
        gap: 0;
    }

    .site-nav > a,
    .nav-item > a {
        min-height: 44px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .nav-panel {
        position: static;
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        min-width: 0;
        padding: 8px 0 14px 12px;
        opacity: 1;
        pointer-events: auto;
        transform: none;
        border: 0;
        background: transparent;
    }

    .hero-slide {
        min-height: 92svh;
        padding: 96px 24px 90px;
        background-position: 62% center;
    }

    .hero h1 {
        font-size: 38px;
    }

    .hero-copy {
        font-size: 16px;
    }

    .hero-control {
        right: 24px;
        bottom: 28px;
    }

    .section,
    .service-band,
    .site-footer {
        width: min(100% - 32px, var(--max));
        grid-template-columns: 1fr;
        padding: 72px 0;
    }

    .about-band,
    .join-band {
        width: min(100% - 32px, var(--max));
        grid-template-columns: 1fr;
        padding: 72px 0;
    }

    .product-grid,
    .service-grid,
    .news-grid,
    .stat-grid,
    .advantage-list,
    .footer-links {
        grid-template-columns: 1fr 1fr;
    }

    .craft-section {
        grid-template-columns: 1fr;
    }

    .join-band {
        display: grid;
    }
}

@media (max-width: 760px) and (pointer: coarse) {
    .site-footer {
        width: 100%;
        padding-left: 24px;
        padding-right: 24px;
        box-sizing: border-box;
        background: #050403;
        color: var(--muted);
    }
}

@media (max-width: 560px) and (pointer: coarse) {
    .product-grid,
    .service-grid,
    .news-grid,
    .stat-grid,
    .advantage-list {
        grid-template-columns: 1fr;
    }

    .site-footer {
        width: 100%;
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 42px 24px 54px;
        box-sizing: border-box;
        background: #050403;
        color: var(--muted);
    }

    .footer-brand {
        gap: 8px;
    }

    .footer-logo {
        width: 164px;
    }

    .footer-links {
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 14px;
    }

    .footer-links div {
        gap: 7px;
    }

    .footer-links strong {
        margin-bottom: 4px;
        font-size: 13px;
        white-space: nowrap;
    }

    .footer-links a {
        font-size: 12px;
        line-height: 1.45;
    }

    .footer-records {
        justify-content: flex-start;
        gap: 8px;
        font-size: 11px;
    }

    .product-card,
    .product-card.compact {
        aspect-ratio: 1.25;
    }

    .case-feature,
    .case-feature img,
    .craft-image,
    .craft-image img {
        min-height: 300px;
    }

    .case-caption {
        left: 22px;
        bottom: 24px;
    }

    .case-arrows {
        right: 20px;
        bottom: 22px;
    }
}

@media (hover: hover) and (pointer: fine) {
    .site-header {
        min-width: 1366px;
        padding-right: 56px;
        padding-left: 56px;
    }

    .site-nav {
        gap: 40px;
    }

    .hero-slide {
        padding: 110px 132px 92px;
    }

    .hero-content {
        width: 820px;
    }

    .hero h1 {
        font-size: 64px;
    }

    .hero-copy {
        font-size: 22px;
    }

    .hero-control {
        right: 96px;
    }

    .section {
        padding: 108px 132px;
        gap: 72px;
    }

    .section-aside h2,
    .about-copy h2,
    .craft-copy h2,
    .join-band h2 {
        font-size: 42px;
    }

    .about-band,
    .service-band,
    .join-band,
    .site-footer {
        gap: 72px;
    }
}