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

:root {
    --gold: #b8942e;
    --gold-light: #d4b04a;
    --bg: #f2f3f5;
    --ink: #111418;
    --muted: #7a8290;
    --line: #e2e5ea;
}

html {
    scroll-behavior: smooth
}

body {
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* ================= 动画基础类 ================= */
.fade-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 1.2s cubic-bezier(0.16, 1, 0.3, 1), transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 {
    transition-delay: 0.15s;
}

.delay-2 {
    transition-delay: 0.3s;
}

.delay-3 {
    transition-delay: 0.45s;
}

.delay-4 {
    transition-delay: 0.6s;
}

/* ================= 首屏 ================= */
.hero {
    width: 100%;
    position: relative;
    background-color: #0b0e12;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: 120px 0 100px;
    /* 稍微增加一点高度，给顶部导航留空间 */
}

.hero-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translate(-50%, -50%);
    object-fit: cover;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(11, 14, 18, 0.95) 0%, rgba(11, 14, 18, 0.75) 40%, rgba(11, 14, 18, 0.3) 100%);
    z-index: 1;
}

/* ----- 顶部导航（Logo + 按钮） ----- */
.top-nav {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    padding: 24px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 10;
    max-width: 1440px;
    left: 50%;
    transform: translateX(-50%);
}

/* 左上角 Logo */
.brand-logo img {
    height: 36px;
    /* Logo 高度控制 */
    width: auto;
    display: block;
    object-fit: contain;
}

/* 右上角按钮组 */
.nav-actions {
    display: flex;
    gap: 16px;
}

.nav-btn {
    padding: 10px 24px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    letter-spacing: 0.05em;
    transition: all 0.3s ease;
    font-family: inherit;
}

/* 定制化网站（正常显示） */
.btn-website {
    background: transparent;
    color: #f5f3ed;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-website:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #f5f3ed;
}

/* H5名片（高亮显示） */
.btn-h5 {
    background: var(--gold);
    color: #0b0e12;
    border: 1px solid var(--gold);
    box-shadow: 0 4px 15px rgba(184, 148, 46, 0.3);
}

.btn-h5:hover {
    background: var(--gold-light);
    border-color: var(--gold-light);
}

/* ----- 首屏文案 ----- */
.hero-inner {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 40px;
    position: relative;
    z-index: 2;
    width: 100%;
}

.hero-eyebrow {
    font-size: 11px;
    letter-spacing: 0.4em;
    color: var(--gold-light);
    text-transform: uppercase;
    margin-bottom: 32px;
    font-weight: 500
}

.hero h1 {
    font-family: 'Noto Serif SC', serif;
    font-size: clamp(42px, 6.5vw, 84px);
    font-weight: 600;
    line-height: 1.1;
    color: #f5f3ed;
    letter-spacing: 0.02em;
    max-width: 1000px;
}

.hero h1 em {
    font-style: normal;
    color: var(--gold-light);
    position: relative;
    display: inline-block
}

.hero h1 em::after {
    content: '';
    position: absolute;
    bottom: 8px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, var(--gold), transparent)
}

.hero-desc {
    margin-top: 28px;
    max-width: 520px;
    font-size: 15px;
    font-weight: 300;
    color: #c1c7d0;
    line-height: 1.8
}

.hero-meta {
    margin-top: 56px;
    display: flex;
    gap: 56px;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.15)
}

.hero-meta-item .num-box {
    font-family: 'Noto Serif SC', serif;
    font-size: 36px;
    color: var(--gold-light);
    font-weight: 600;
    display: inline-block;
    min-width: 40px;
}

.hero-meta-item .label {
    font-size: 11px;
    letter-spacing: 0.12em;
    color: #8b929e;
    text-transform: uppercase;
    margin-top: 4px
}

/* ================= 中间内容 ================= */
.page-content {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 40px 100px;
    position: relative;
}

.filters {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    gap: 0;
    padding: 0;
    margin: 0 0 56px;
    background: rgba(242, 243, 245, 0.94);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    overflow-x: auto;
    scrollbar-width: none;
}

.filters::-webkit-scrollbar {
    display: none
}

.chip {
    flex-shrink: 0;
    padding: 20px 24px;
    border: none;
    background: transparent;
    color: var(--muted);
    font-size: 13px;
    font-weight: 400;
    letter-spacing: 0.04em;
    cursor: pointer;
    position: relative;
    transition: color 0.2s;
    white-space: nowrap;
    font-family: inherit;
}

.chip:hover {
    color: var(--ink)
}

.chip.active {
    color: var(--ink);
    font-weight: 500
}

.chip.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 24px;
    right: 24px;
    height: 2px;
    background: var(--gold)
}

.group {
    margin-bottom: 72px
}

.group-head {
    display: flex;
    align-items: baseline;
    gap: 16px;
    margin-bottom: 28px
}

.group-head .index {
    font-family: 'Noto Serif SC', serif;
    font-size: 13px;
    color: var(--gold);
    font-weight: 600;
    letter-spacing: 0.08em
}

.group-head h2 {
    font-family: 'Noto Serif SC', serif;
    font-size: 26px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: 0.04em
}

.group-head .desc {
    font-size: 12px;
    color: var(--muted);
    letter-spacing: 0.06em;
    margin-left: auto
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    width: 100%;
}

.card {
    position: relative;
    display: block;
    width: 100%;
    aspect-ratio: 9/19.5;
    border-radius: 6px;
    overflow: hidden;
    cursor: pointer;
    isolation: isolate;
    background: linear-gradient(135deg, #e2e5ea, #c3c9d2);
}

.card img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: transform;
    z-index: 0;
}

.card:hover img {
    transform: scale(1.05)
}

.card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(6, 8, 12, 0.94) 0%, rgba(6, 8, 12, 0.78) 20%, rgba(6, 8, 12, 0.35) 45%, rgba(6, 8, 12, 0.02) 68%, transparent 85%);
    pointer-events: none;
    z-index: 1;
    transition: opacity 0.4s;
}

.card:hover::after {
    opacity: 0.92
}

.card-body {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2;
    padding: 24px 22px;
    color: #fff;
    transform: translateY(8px);
    transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.card:hover .card-body {
    transform: translateY(0)
}

.card-name {
    font-family: 'Noto Serif SC', serif;
    font-size: 18px;
    font-weight: 600;
    color: #f8f6f0;
    letter-spacing: 0.03em;
    line-height: 1.3
}

.card-meta {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.55);
    margin-top: 6px;
    letter-spacing: 0.04em;
    font-weight: 300
}

.card-cta {
    margin-top: 16px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0;
    border: none;
    background: transparent;
    color: var(--gold-light);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.1em;
    cursor: pointer;
    font-family: inherit;
    opacity: 0;
    transform: translateY(6px);
    transition: opacity 0.4s 0.1s, transform 0.4s 0.1s;
}

.card:hover .card-cta {
    opacity: 1;
    transform: translateY(0)
}

.card-cta svg {
    width: 14px;
    height: 14px;
    transition: transform 0.3s
}

.card:hover .card-cta svg {
    transform: translateX(3px)
}

/* ================= 底部 ================= */
.site-footer {
    width: 100%;
    position: relative;
    background-color: #0b0e12;
    overflow: hidden;
}

.footer-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translate(-50%, -50%);
    object-fit: cover;
    z-index: 0;
}

.site-footer::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(11, 14, 18, 0.7);
    z-index: 1;
}

.footer-inner {
    max-width: 1440px;
    margin: 0 auto;
    padding: 80px 40px 40px;
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: 60px;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 60px;
}

.footer-brand-info .brand-name {
    font-family: 'Noto Serif SC', serif;
    font-size: 28px;
    font-weight: 600;
    color: var(--gold-light);
    letter-spacing: 0.1em;
}

.footer-brand-info .brand-slogan {
    font-size: 14px;
    color: #b0b6c0;
    margin-top: 12px;
    max-width: 400px;
    line-height: 1.8;
}

/* 社媒图标区域 */
.social-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.social-title {
    font-size: 13px;
    color: #f5f3ed;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.social-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.social-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #b0b6c0;
    text-decoration: none;
    transition: all 0.3s;
}

.social-icon svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

.social-icon:hover {
    background: var(--gold);
    color: #0b0e12;
    border-color: var(--gold);
    transform: translateY(-3px);
}

/* 微信二维码专属区 */
.wechat-box {
    display: flex;
    align-items: center;
    gap: 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 12px;
    border-radius: 12px;
    margin-top: 10px;
}

.wechat-qr {
    width: 80px;
    height: 80px;
    background: #fff;
    border-radius: 6px;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.wechat-qr img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.wechat-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.wechat-name {
    font-size: 14px;
    font-weight: 600;
    color: #f5f3ed;
}

.wechat-desc {
    font-size: 12px;
    color: #8b929e;
}

/* 底部版权区 */
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 12px;
    color: #8b929e;
}

.footer-bottom a {
    color: #8b929e;
    text-decoration: none;
    transition: color 0.2s
}

.footer-bottom a:hover {
    color: #f5f3ed
}

/* ================= 响应式 ================= */
@media(max-width:1100px) {
    .grid-container {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px
    }
}

@media(max-width:768px) {
    .top-nav {
        padding: 16px 20px;
    }

    .brand-logo img {
        height: 28px;
    }

    .nav-btn {
        padding: 8px 16px;
        font-size: 13px;
    }

    .hero {
        padding: 100px 0 80px;
    }

    .grid-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px
    }

    .hero-inner {
        padding: 0 24px
    }

    .page-content {
        padding: 0 24px 64px
    }

    .footer-inner {
        padding: 60px 24px 30px
    }

    .hero-meta-item .num-box {
        font-size: 28px;
    }

    .footer-top {
        flex-direction: column;
        gap: 40px;
    }

    .social-links {
        gap: 10px;
    }

    .social-icon {
        width: 36px;
        height: 36px;
    }

    .social-icon svg {
        width: 16px;
        height: 16px;
    }

    .wechat-box {
        width: 100%;
    }
}

@media(max-width:580px) {
    .hero {
        padding: 90px 0 56px;
    }

    .hero-inner {
        padding: 0 20px
    }

    .page-content {
        padding: 0 16px 48px
    }

    .hero-meta {
        gap: 32px;
        margin-top: 36px;
        padding-top: 24px
    }

    .filters {
        margin-bottom: 40px
    }

    .chip {
        padding: 16px 18px;
        font-size: 13px
    }

    .chip.active::after {
        left: 18px;
        right: 18px
    }

    .group-head h2 {
        font-size: 22px
    }

    .group-head .desc {
        display: none
    }

    .group {
        margin-bottom: 48px
    }

    .grid-container {
        grid-template-columns: 1fr;
        gap: 20px
    }

    .card {
        aspect-ratio: 9/18
    }

    .card-body {
        padding: 20px 18px
    }

    .card-name {
        font-size: 20px
    }

    .card-meta {
        font-size: 13px
    }

    .card-cta {
        opacity: 1;
        transform: none;
        font-size: 12px;
        margin-top: 14px
    }

    .footer-inner {
        padding: 48px 20px 24px
    }

    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px
    }
}