/*
 * @file        home.css
 * @description 首页专属样式 - Hero 大图、数据统计、最新展览、新闻动态、师资风采、合作伙伴
 * @author      zhuowebuqun
 * @date        2026-05-01
 * @notes       依赖 common.css 中的 CSS 变量
 */

/* ================ Hero 全屏 Banner ================ */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
    background: var(--c-ink);
}
.hero-slides {
    position: absolute;
    inset: 0;
}
.hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 1.2s ease;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}
.hero-slide.is-active {
    opacity: 1;
}
.hero-slide::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg,
        rgba(26, 35, 50, .55) 0%,
        rgba(26, 35, 50, .35) 50%,
        rgba(26, 35, 50, .75) 100%);
}

/* 默认渐变 slide（无图片时使用，绚丽多彩艺术张力） */
.hero-slide.bg-gradient-1 {
    background:
        radial-gradient(ellipse at 20% 30%, rgba(244, 185, 66, .35) 0%, transparent 45%),
        radial-gradient(ellipse at 80% 70%, rgba(123, 94, 167, .45) 0%, transparent 50%),
        linear-gradient(135deg, #1A1B3A 0%, #C12A37 60%, #FF8C42 100%);
}
/* 实景背景：assets/bg.jpg + 方向性遮罩
 * 遮罩从右上角透明→左下角加深：
 * - 右上角：几乎无遮罩，让背景图与阳光光晕充分展示
 * - 左下角：深黛紫，包裹标题 / 副标 / 按钮文本区，保障可读性
 */
.hero-slide.bg-photo-1 {
    background:
        url('../bg.png') center/cover no-repeat;
}
/* 覆写通用 ::before 遮罩，改为「左侧阅读柱 + 顶部轻 scrim」双层叠加：
 * - 顶部 0~25%：轻深色渐变，让导航在亮天空上也能清晰
 * - 左侧 0~55%：深黛紫纵向渐变，把标题 / 副标 / 按钮整块抱住
 * - 右侧 55% 后：完全透明，背景图 + 阳光光晕原声呈现
 */
.hero-slide.bg-photo-1::before {
    background:
        linear-gradient(180deg,
            rgba(26, 27, 58, .55) 0%,
            rgba(26, 27, 58, .18) 18%,
            rgba(26, 27, 58, 0)   30%),
        linear-gradient(to right,
            rgba(26, 27, 58, .82) 0%,
            rgba(26, 27, 58, .65) 18%,
            rgba(26, 27, 58, .38) 38%,
            rgba(26, 27, 58, .10) 55%,
            rgba(26, 27, 58, 0)   70%);
}
/* Banner 2 / 3 实景背景：复用与 bg-photo-1 相同的方向性遮罩（左侧阅读柱 + 顶部薄幕） */
.hero-slide.bg-photo-2 {
    background:
        url('../bg2.png') center/cover no-repeat;
}
.hero-slide.bg-photo-2::before {
    background:
        linear-gradient(180deg,
            rgba(26, 27, 58, .55) 0%,
            rgba(26, 27, 58, .18) 18%,
            rgba(26, 27, 58, 0)   30%),
        linear-gradient(to right,
            rgba(26, 27, 58, .82) 0%,
            rgba(26, 27, 58, .65) 18%,
            rgba(26, 27, 58, .38) 38%,
            rgba(26, 27, 58, .10) 55%,
            rgba(26, 27, 58, 0)   70%);
}
.hero-slide.bg-photo-3 {
    background:
        url('../bg3.png') center/cover no-repeat;
}
.hero-slide.bg-photo-3::before {
    background:
        linear-gradient(180deg,
            rgba(26, 27, 58, .55) 0%,
            rgba(26, 27, 58, .18) 18%,
            rgba(26, 27, 58, 0)   30%),
        linear-gradient(to right,
            rgba(26, 27, 58, .82) 0%,
            rgba(26, 27, 58, .65) 18%,
            rgba(26, 27, 58, .38) 38%,
            rgba(26, 27, 58, .10) 55%,
            rgba(26, 27, 58, 0)   70%);
}
.hero-slide.bg-gradient-2 {
    background:
        radial-gradient(circle at 30% 20%, rgba(255, 140, 66, .3) 0%, transparent 40%),
        radial-gradient(circle at 75% 80%, rgba(45, 149, 150, .5) 0%, transparent 45%),
        linear-gradient(135deg, #2D1B4E 0%, #7B5EA7 50%, #E63946 100%);
}
.hero-slide.bg-gradient-3 {
    background:
        radial-gradient(ellipse at 60% 30%, rgba(244, 185, 66, .4) 0%, transparent 45%),
        radial-gradient(ellipse at 20% 80%, rgba(230, 57, 70, .4) 0%, transparent 50%),
        linear-gradient(135deg, #1F6F70 0%, #2D2E5C 55%, #1A1B3A 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    align-items: center;
    color: #fff;
}
.hero-tag {
    display: inline-block;
    padding: 6px 18px;
    border: 1px solid rgba(255, 255, 255, .5);
    border-radius: 999px;
    font-size: 11px;
    letter-spacing: 6px;
    margin-bottom: 28px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    font-family: var(--font-classic);
    font-style: italic;
    /* 添加半透明深色底色，让 tag 在亮背景下也有明确边畸 */
    background:
        linear-gradient(90deg, rgba(244,185,66,.22), rgba(230,57,70,.22)),
        rgba(0, 0, 0, .28);
}
.hero-title {
    /* 统一使用“展览与赛事”栏目标题同款衬线宋体（.section-title h2）；纯白禁阴影 */
    font-family: var(--font-serif);
    font-size: 84px;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: 6px;
    max-width: 900px;
    margin-bottom: 28px;
    color: #fff;
}
.hero-sub {
    font-size: 16px;
    line-height: 1.9;
    max-width: 620px;
    opacity: .95;
    letter-spacing: 1px;
    margin-bottom: 44px;
    font-family: var(--font-sans);
    font-weight: 300;
    text-align: justify;
}
/* ================ Hero 三屏文案切换（与轮播 slide 同步） ================
 * 采用 CSS Grid 堆叠 3 层 .hero-pane，容器高度自动取最高一层，避免切换时高度跳变
 * 默认 opacity:0 不显示；.is-active 添加后淑变添入，由 home.js 同步轮播进度
 */
.hero-panes {
    display: grid;
    grid-template-areas: "pane";
    margin-bottom: 4px;
}
.hero-pane {
    grid-area: pane;
    opacity: 0;
    pointer-events: none;
    transition: opacity .8s ease;
    visibility: hidden;
}
.hero-pane.is-active {
    opacity: 1;
    pointer-events: auto;
    visibility: visible;
}
.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.hero-actions .btn-primary {
    background: linear-gradient(135deg, var(--c-vermilion) 0%, var(--c-sunrise) 100%);
    color: #fff;
    box-shadow: var(--shadow-art);
    border: 0;
}
.hero-actions .btn-primary:hover {
    background: linear-gradient(135deg, var(--c-gilt) 0%, var(--c-vermilion) 100%);
    color: #fff;
    transform: translateY(-2px);
}
.hero-actions .btn-ghost {
    border-color: rgba(255, 255, 255, .7);
    color: #fff;
}
.hero-actions .btn-ghost:hover {
    background: rgba(244, 185, 66, .9);
    color: var(--c-indigo);
    border-color: var(--c-gilt);
}

/* Hero 切换指示点 */
.hero-dots {
    position: absolute;
    left: 50%;
    bottom: 88px;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 5;
}
.hero-dots span {
    width: 32px;
    height: 3px;
    background: rgba(255, 255, 255, .3);
    cursor: pointer;
    transition: background var(--t-base);
}
.hero-dots span.is-active {
    background: var(--c-gold);
}

/* Hero 左右箭头 */
.hero-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 5;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, .35);
    background: rgba(255, 255, 255, .05);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(6px);
    transition: all var(--t-base);
    font-size: 20px;
}
.hero-arrow:hover {
    background: var(--c-gold);
    border-color: var(--c-gold);
    transform: translateY(-50%) scale(1.08);
}
.hero-arrow.is-prev { left: 40px; }
.hero-arrow.is-next { right: 40px; }
.hero-arrow svg { width: 18px; height: 18px; }

/* Hero 右下编号 + 进度条 */
.hero-meta {
    position: absolute;
    right: 40px;
    bottom: 88px;
    z-index: 5;
    color: #fff;
    text-align: right;
}
.hero-index {
    font-family: var(--font-serif);
    font-size: 14px;
    letter-spacing: 4px;
    margin-bottom: 8px;
    opacity: .9;
}
.hero-index .cur {
    font-size: 36px;
    color: var(--c-gold);
    line-height: 1;
    margin-right: 4px;
}
.hero-index .sep {
    margin: 0 6px;
    opacity: .4;
}
.hero-progress {
    width: 160px;
    height: 2px;
    background: rgba(255, 255, 255, .2);
    margin-left: auto;
    overflow: hidden;
    border-radius: 2px;
}
.hero-progress-bar {
    height: 100%;
    width: 0%;
    background: var(--c-gold);
}

/* Hero 右上角阳光光晕：模拟阳光从画面中心缓缓升起、飘向右上角
 * 呼应 Hero 标题“让艺术照亮人文的旷野”
 * - 元素默认锁定在 hero 中心（top/left 50% + 负 margin）
 * - sunRise 动画：从中心位移 + 放大 + 渐显，一次升起到右上角
 * - sunGlow 动画：抵达后微灵的呼吸请度，仓不剥离位置
 * - mix-blend-mode: screen 与背景叠加提亮，不遮挡文字
 */
.hero-sun {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 680px;
    height: 680px;
    margin-left: -340px;
    margin-top: -340px;
    z-index: 1;
    pointer-events: none;
    border-radius: 50%;
    background:
        radial-gradient(circle at center,
            rgba(255, 240, 200, .75) 0%,
            rgba(255, 210, 130, .45) 16%,
            rgba(255, 170, 90, .22) 34%,
            rgba(255, 130, 60, .09) 54%,
            transparent 72%);
    filter: blur(28px);
    mix-blend-mode: screen;
    opacity: 0;
    will-change: transform, opacity, filter;
    animation:
        sunRise 8s cubic-bezier(.22, .61, .36, 1) .4s forwards,
        sunGlow 6s ease-in-out 8.4s infinite alternate;
}
/* 二层光环：内核独立呼吸，拟速率略不同，层次更丰富 */
.hero-sun::before {
    content: '';
    position: absolute;
    inset: 24% 24% 24% 24%;
    border-radius: 50%;
    background:
        radial-gradient(circle at center,
            rgba(255, 248, 220, .85) 0%,
            rgba(255, 220, 150, .55) 30%,
            transparent 70%);
    filter: blur(14px);
    animation: sunPulse 7s ease-in-out infinite alternate;
}

/* 从中心升起→飘向右上角（一次性动画，结束后 forwards 保持） */
@keyframes sunRise {
    0%   { transform: translate(0, 0)       scale(.7); opacity: 0; }
    20%  { opacity: .55; }
    60%  { opacity: .9; }
    100% { transform: translate(38vw, -36vh) scale(1);  opacity: 1; }
}
/* 抵达右上角后的呼吸请度（仅 filter 变化，不破坏 transform 位置） */
@keyframes sunGlow {
    0%   { filter: blur(28px); }
    100% { filter: blur(22px); }
}
@keyframes sunPulse {
    0%   { transform: scale(1);    opacity: .85; }
    100% { transform: scale(1.12); opacity: 1; }
}

/* Hero 装饰大字（视差） */
.hero-deco {
    position: absolute;
    left: -20px;
    bottom: -40px;
    z-index: 1;
    font-family: var(--font-serif);
    font-size: 320px;
    font-weight: 900;
    line-height: .8;
    color: rgba(255, 255, 255, .04);
    pointer-events: none;
    letter-spacing: -10px;
    user-select: none;
}

/* ================ 数据统计 ================ */
.stats {
    background:
        linear-gradient(135deg, #FAF7F2 0%, #F8F0E3 100%);
    padding: 72px 0;
    position: relative;
    overflow: hidden;
}
.stats::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 15% 20%, rgba(230, 57, 70, .08) 0, transparent 35%),
        radial-gradient(circle at 85% 30%, rgba(244, 185, 66, .12) 0, transparent 35%),
        radial-gradient(circle at 50% 90%, rgba(123, 94, 167, .08) 0, transparent 35%);
    pointer-events: none;
}
.stats::after {
    content: "人 文 · 艺 术";
    position: absolute;
    right: -20px;
    bottom: -40px;
    font-family: var(--font-display);
    font-size: 180px;
    color: var(--c-vermilion);
    opacity: .04;
    pointer-events: none;
    letter-spacing: 16px;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
    position: relative;
    z-index: 1;
}
.stat-item {
    padding: 16px;
    border-radius: var(--radius-md);
    transition: all var(--t-base);
    position: relative;
}
.stat-item:not(:last-child)::after {
    content: "";
    position: absolute;
    right: -12px;
    top: 20%;
    height: 60%;
    width: 1px;
    background: linear-gradient(180deg, transparent, var(--c-vermilion) 30%, var(--c-gilt) 70%, transparent);
    opacity: .35;
}
.stat-item:hover {
    transform: translateY(-8px);
}
.stat-item:hover .counter-num {
    background: linear-gradient(135deg, var(--c-vermilion) 0%, var(--c-sunrise) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.stat-item .counter-num {
    font-family: var(--font-serif);
    font-size: 64px;
    font-weight: 700;
    color: var(--c-indigo);
    margin-bottom: 8px;
    transition: all var(--t-base);
    display: inline-block;
    line-height: 1;
}
.stat-item:nth-child(1) .counter-num { color: var(--c-vermilion); }
.stat-item:nth-child(2) .counter-num { color: var(--c-wisteria); }
.stat-item:nth-child(3) .counter-num { color: var(--c-celadon); }
.stat-item:nth-child(4) .counter-num { color: var(--c-gilt-d); }
.stat-item .stat-suffix {
    font-size: 20px;
    color: inherit;
    margin-left: 4px;
    opacity: .75;
    font-family: var(--font-serif);
    font-weight: 500;
}
.stat-item p {
    font-size: 13px;
    color: var(--c-text-muted);
    letter-spacing: 4px;
    font-family: var(--font-serif);
    margin-top: 6px;
}

/* ================ 通用模块标题（首页） ================ */
.home-section {
    padding: 96px 0;
}
.home-section.bg-ivory {
    background: var(--c-ivory);
}

/* ================ 展览 / 赛事 Tab 切换 ================ */
.ex-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin: -16px 0 40px;
    flex-wrap: wrap;
}
.ex-tab {
    position: relative;
    background: transparent;
    border: 1.5px solid var(--c-border);
    color: var(--c-text-muted);
    padding: 12px 32px;
    font-size: 14px;
    letter-spacing: 3px;
    cursor: pointer;
    border-radius: 999px;
    transition: all var(--t-base);
    font-family: var(--font-serif);
    font-weight: 500;
}
.ex-tab:hover {
    color: var(--c-vermilion);
    border-color: var(--c-vermilion);
    transform: translateY(-2px);
}
.ex-tab.is-active {
    background: linear-gradient(135deg, var(--c-vermilion) 0%, var(--c-sunrise) 100%);
    color: #fff;
    border-color: transparent;
    box-shadow: var(--shadow-art);
}
.ex-tab .ex-tab-en {
    display: block;
    font-size: 10px;
    letter-spacing: 3px;
    opacity: .65;
    margin-top: 2px;
    text-transform: uppercase;
    font-family: var(--font-classic);
    font-style: italic;
}

.ex-pane {
    display: none;
    animation: paneIn .5s ease both;
}
.ex-pane.is-active { display: block; }
@keyframes paneIn {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ================ 最新展览（图片卡片网格） ================ */
.exhibition-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    grid-template-rows: 280px 280px;
    gap: 16px;
}
.ex-card {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-md);
    cursor: pointer;
    background: linear-gradient(135deg, var(--c-indigo-soft), var(--c-vermilion));
}
.ex-card:nth-child(1) {
    grid-row: span 2;
    background:
        radial-gradient(circle at 70% 30%, rgba(244,185,66,.4) 0%, transparent 50%),
        linear-gradient(135deg, #1A1B3A 0%, #C12A37 100%);
}
.ex-card:nth-child(2) { background: linear-gradient(135deg, #7B5EA7 0%, #5A3F82 100%); }
.ex-card:nth-child(3) { background: linear-gradient(135deg, #2D9596 0%, #1F6F70 100%); }
.ex-card:nth-child(4) { background: linear-gradient(135deg, #FF8C42 0%, #C12A37 100%); }
.ex-card:nth-child(5) { background: linear-gradient(135deg, #F4B942 0%, #D89826 100%); }
.ex-card .ex-cover {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transition: transform .8s cubic-bezier(.4, 0, .2, 1);
}
.ex-card:hover .ex-cover {
    transform: scale(1.06);
}
.ex-card .ex-meta {
    position: absolute;
    inset: 0;
    z-index: 2;
    padding: 24px;
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    background: linear-gradient(180deg, rgba(0,0,0,0) 40%, rgba(0,0,0,.7) 100%);
    transition: background var(--t-base);
}
.ex-card:hover .ex-meta {
    background: linear-gradient(180deg, rgba(0,0,0,.2) 0%, rgba(0,0,0,.85) 100%);
}
.ex-card .ex-cat {
    font-size: 11px;
    letter-spacing: 4px;
    color: var(--c-gilt);
    margin-bottom: 10px;
    font-family: var(--font-classic);
    font-weight: 700;
    text-transform: uppercase;
}
.ex-card h3 {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: 2px;
    color: #fff;
}
.ex-card .ex-date {
    font-size: 12px;
    opacity: .75;
    font-family: var(--font-sans);
    letter-spacing: 1px;
}
.ex-card:nth-child(1) h3 {
    font-size: 36px;
    line-height: 1.25;
}

/* ---- 视频卡变体：第一个大卡做成视频样式 ---- */
.ex-card.is-video .ex-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
    filter: saturate(1.05) contrast(1.04);
    transition: transform .8s cubic-bezier(.4, 0, .2, 1);
}
.ex-card.is-video:hover .ex-video {
    transform: scale(1.04);
}
.ex-card.is-video .ex-meta {
    background: linear-gradient(180deg,
        rgba(0, 0, 0, .25) 0%,
        rgba(0, 0, 0, 0) 40%,
        rgba(0, 0, 0, .78) 100%);
}
.ex-card.is-video:hover .ex-meta {
    background: linear-gradient(180deg,
        rgba(0, 0, 0, .35) 0%,
        rgba(0, 0, 0, .1) 45%,
        rgba(0, 0, 0, .88) 100%);
}

/* 左上 LIVE 标签，红点呼吸 */
.ex-card .ex-video-tag {
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 3;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    font-size: 11px;
    letter-spacing: 3px;
    font-family: var(--font-classic);
    font-weight: 700;
    color: #fff;
    background: rgba(0, 0, 0, .45);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border-radius: 2px;
    text-transform: uppercase;
}
.ex-card .ex-video-tag::before {
    content: "";
    width: 6px;
    height: 6px;
    background: var(--c-vermilion);
    border-radius: 50%;
    box-shadow: 0 0 0 3px rgba(230, 57, 70, .35);
    animation: videoBlink 1.6s ease-in-out infinite;
}
@keyframes videoBlink {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%     { opacity: .35; transform: scale(.75); }
}

/* 中心播放按钮 + 同心环呼吸 */
.ex-card .ex-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 3;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .14);
    border: 2px solid rgba(255, 255, 255, .9);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: transform .4s, background .4s, border-color .4s;
}
.ex-card .ex-play svg {
    margin-left: 4px;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, .3));
}
.ex-card .ex-play::before,
.ex-card .ex-play::after {
    content: "";
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, .45);
    animation: playRipple 2.2s ease-out infinite;
    pointer-events: none;
}
.ex-card .ex-play::after {
    animation-delay: 1.1s;
}
@keyframes playRipple {
    0%   { transform: scale(1);   opacity: .9; }
    100% { transform: scale(1.45); opacity: 0; }
}
.ex-card.is-video:hover .ex-play {
    background: var(--c-vermilion);
    border-color: var(--c-vermilion);
    transform: translate(-50%, -50%) scale(1.08);
}

/* 卡片增强 hover：底部金色装饰线上推、查看详情起浮 */
.ex-card::after {
    content: "";
    position: absolute;
    left: 0; bottom: 0;
    height: 3px;
    width: 0;
    background: var(--c-gold);
    transition: width .6s cubic-bezier(.4,0,.2,1);
    z-index: 3;
}
.ex-card:hover::after { width: 100%; }

.ex-card .ex-cat {
    transition: letter-spacing .4s, color .4s;
}
.ex-card:hover .ex-cat {
    letter-spacing: 6px;
    color: #fff;
}

.ex-arrow {
    position: absolute;
    top: 24px;
    right: 24px;
    z-index: 3;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, .35);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: translate(-12px, 12px) rotate(-45deg);
    transition: all .5s cubic-bezier(.4,0,.2,1);
    font-size: 18px;
    pointer-events: none;
}
.ex-card:hover .ex-arrow {
    opacity: 1;
    transform: translate(0, 0) rotate(0);
    background: var(--c-gold);
    border-color: var(--c-gold);
}

/* 赛事卡片：左上奖杯角标（补充于各背景之上） */
.ex-card.is-contest .ex-meta::before {
    content: "奖 CONTEST";
    position: absolute;
    top: 18px;
    left: 18px;
    background: var(--c-cinnabar);
    color: #fff;
    font-size: 11px;
    letter-spacing: 2px;
    padding: 4px 10px;
    border-radius: 2px;
    font-family: var(--font-serif);
    z-index: 3;
}

/* 赛事 Tab 中的背景色调（与展览错开，保证多彩） */
.ex-pane[data-pane="ct"] .ex-card:nth-child(1) {
    background:
        radial-gradient(circle at 30% 70%, rgba(255,140,66,.4) 0%, transparent 50%),
        linear-gradient(135deg, #5A3F82 0%, #1A1B3A 100%);
}
.ex-pane[data-pane="ct"] .ex-card:nth-child(2) { background: linear-gradient(135deg, #2D9596 0%, #1A1B3A 100%); }
.ex-pane[data-pane="ct"] .ex-card:nth-child(3) { background: linear-gradient(135deg, #FF8C42 0%, #E63946 100%); }
.ex-pane[data-pane="ct"] .ex-card:nth-child(4) { background: linear-gradient(135deg, #F4B942 0%, #FF8C42 100%); }
.ex-pane[data-pane="ct"] .ex-card:nth-child(5) { background: linear-gradient(135deg, #7B5EA7 0%, #2D9596 100%); }

/* ================ 新闻动态：左大图 + 右列表 ================ */
.news-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}
.news-feature {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: linear-gradient(135deg, var(--c-ink), var(--c-ink-soft));
    min-height: 420px;
    color: #fff;
}
.news-feature .nf-cover {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: .55;
    transition: transform .8s cubic-bezier(.4, 0, .2, 1);
}
.news-feature:hover .nf-cover {
    transform: scale(1.06);
}
.news-feature .nf-meta {
    position: absolute;
    inset: 0;
    z-index: 2;
    padding: 32px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    background: linear-gradient(180deg, transparent 30%, rgba(0,0,0,.65) 100%);
}
.news-feature .nf-tag {
    display: inline-block;
    background: linear-gradient(135deg, var(--c-vermilion) 0%, var(--c-sunrise) 100%);
    color: #fff;
    padding: 5px 14px;
    font-size: 12px;
    letter-spacing: 2px;
    border-radius: 999px;
    margin-bottom: 16px;
    align-self: flex-start;
    font-family: var(--font-serif);
    font-weight: 500;
    box-shadow: 0 4px 16px rgba(230,57,70,.4);
}
.news-feature h3 {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 12px;
    letter-spacing: 1px;
}
.news-feature .nf-sum {
    font-size: 14px;
    opacity: .9;
    margin-bottom: 12px;
    line-height: 1.7;
    font-family: var(--font-sans);
}
.news-feature time {
    font-size: 12px;
    opacity: .7;
    letter-spacing: 2px;
    font-family: var(--font-classic);
    font-style: italic;
}

.news-list-side {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.news-item {
    display: flex;
    gap: 16px;
    padding: 18px 20px;
    background: #fff;
    border-radius: var(--radius-md);
    border: 1px solid var(--c-border);
    transition: all var(--t-base);
    position: relative;
    overflow: hidden;
}
.news-item::before {
    content: "";
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--c-vermilion), var(--c-gilt));
    transform: scaleY(0);
    transform-origin: top;
    transition: transform var(--t-base);
}
.news-item:hover {
    border-color: transparent;
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}
.news-item:hover::before { transform: scaleY(1); }
.news-item:hover h4 { color: var(--c-vermilion); }
.news-item .ni-date {
    flex-shrink: 0;
    width: 64px;
    text-align: center;
    border-right: 1px solid var(--c-divider);
    padding-right: 16px;
    color: var(--c-vermilion);
}
.news-item .ni-date strong {
    display: block;
    font-family: var(--font-classic);
    font-size: 32px;
    font-weight: 700;
    line-height: 1;
    color: var(--c-indigo);
}
.news-item .ni-date span {
    font-size: 11px;
    letter-spacing: 2px;
    color: var(--c-text-muted);
    font-family: var(--font-classic);
    font-style: italic;
}
.news-item .ni-body {
    flex: 1;
    min-width: 0;
}
.news-item h4 {
    font-size: 15px;
    color: var(--c-ink);
    margin-bottom: 4px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    font-family: var(--font-serif);
    font-weight: 500;
    transition: color var(--t-base);
}
.news-item p {
    font-size: 13px;
    color: var(--c-text-muted);
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

/* ================ 师资风采（横向滑动 + 自动跑马灯） ================ */
.teacher-marquee {
    position: relative;
    margin-top: 8px;
}
.tm-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 3;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #fff;
    border: 1px solid var(--c-border);
    color: var(--c-ink);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--t-base);
}
.tm-arrow:hover {
    background: var(--c-ink);
    color: var(--c-gold);
    border-color: var(--c-ink);
    transform: translateY(-50%) scale(1.08);
}
.tm-arrow.is-prev { left: -16px; }
.tm-arrow.is-next { right: -16px; }
.tm-arrow svg { width: 16px; height: 16px; }
.tm-arrow.is-disabled {
    opacity: .35;
    cursor: not-allowed;
    pointer-events: none;
}

.teacher-scroll {
    overflow-x: auto;
    margin: 0 -24px;
    padding: 0 24px 16px;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
}
.teacher-scroll::-webkit-scrollbar { height: 6px; }
.teacher-scroll::-webkit-scrollbar-thumb {
    background: linear-gradient(90deg, var(--c-vermilion), var(--c-gilt));
    border-radius: 3px;
}
.teacher-row {
    display: flex;
    gap: 24px;
}
.teacher-card {
    flex: 0 0 240px;
    scroll-snap-align: start;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: #fff;
    border: 1px solid var(--c-border);
    transition: transform .5s cubic-bezier(.4, 0, .2, 1), box-shadow .5s, border-color .4s;
    position: relative;
}
.teacher-card::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: var(--radius-md);
    padding: 2px;
    background: linear-gradient(135deg, transparent, transparent);
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
            mask-composite: exclude;
    pointer-events: none;
    transition: background .5s;
    z-index: 3;
}
/* 卡片底部金线逐渐充盈 */
.teacher-card::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    height: 3px;
    width: 0;
    background: linear-gradient(90deg, var(--c-vermilion), var(--c-gilt));
    transition: width .6s cubic-bezier(.4, 0, .2, 1);
    z-index: 4;
}
.teacher-card:hover {
    border-color: transparent;
    transform: translateY(-12px);
    box-shadow: 0 24px 48px -12px rgba(26, 27, 58, .24);
}
.teacher-card:hover::before {
    background: linear-gradient(135deg, var(--c-vermilion), var(--c-gilt), var(--c-celadon));
}
.teacher-card:hover::after {
    width: 100%;
}
.tc-photo {
    /* 人物肖像竖版比例 3:4，纯色块占位；后续接入真实照片时直接用 background-image 覆盖即可 */
    aspect-ratio: 3 / 4;
    background-size: cover;
    background-position: center;
    position: relative;
    overflow: hidden;
    transition: filter .5s;
}
/* 光晶扫过：hover 时从左下向右上扫过头像区 */
.tc-photo::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -80%;
    width: 60%;
    height: 200%;
    background: linear-gradient(110deg, transparent 35%, rgba(255, 255, 255, .38) 50%, transparent 65%);
    transform: rotate(18deg);
    transition: left .8s cubic-bezier(.4, 0, .2, 1);
    pointer-events: none;
    z-index: 2;
}
.teacher-card:hover .tc-photo::before {
    left: 120%;
}
/* 头像上的柔和暗角 */
.tc-photo::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(0, 0, 0, .18));
    transition: background .5s;
    pointer-events: none;
    z-index: 1;
}
.teacher-card:hover .tc-photo {
    filter: saturate(1.15) brightness(1.04);
}
.teacher-card:hover .tc-photo::after {
    background: linear-gradient(180deg, rgba(230, 57, 70, .06) 0%, transparent 50%, rgba(26, 27, 58, .3) 100%);
}
/* 为不同位教师头像赋予多彩背景 */
.teacher-row .teacher-card:nth-child(6n+1) .tc-photo { background: linear-gradient(135deg, var(--c-vermilion), var(--c-sunrise)); }
.teacher-row .teacher-card:nth-child(6n+2) .tc-photo { background: linear-gradient(135deg, var(--c-wisteria), var(--c-indigo)); }
.teacher-row .teacher-card:nth-child(6n+3) .tc-photo { background: linear-gradient(135deg, var(--c-celadon), var(--c-celadon-d)); }
.teacher-row .teacher-card:nth-child(6n+4) .tc-photo { background: linear-gradient(135deg, var(--c-gilt), var(--c-vermilion)); }
.teacher-row .teacher-card:nth-child(6n+5) .tc-photo { background: linear-gradient(135deg, var(--c-sunrise), var(--c-wisteria)); }
.teacher-row .teacher-card:nth-child(6n)   .tc-photo { background: linear-gradient(135deg, var(--c-indigo), var(--c-celadon)); }
.tc-info {
    padding: 18px 16px;
    text-align: center;
}
.tc-info h4 {
    font-family: var(--font-serif);
    font-size: 18px;
    color: var(--c-ink);
    margin-bottom: 4px;
    font-weight: 700;
    letter-spacing: 1px;
    transition: color .4s, letter-spacing .4s;
}
.teacher-card:hover .tc-info h4 {
    color: var(--c-vermilion);
    letter-spacing: 3px;
}
.tc-info p {
    font-size: 12px;
    color: var(--c-text-muted);
    letter-spacing: 1px;
}
.tc-info .tc-tag {
    display: inline-block;
    margin-top: 10px;
    padding: 3px 12px;
    background: linear-gradient(90deg, rgba(230,57,70,.1), rgba(244,185,66,.15));
    color: var(--c-vermilion-d);
    font-size: 11px;
    border-radius: 999px;
    font-family: var(--font-classic);
    font-style: italic;
    letter-spacing: .5px;
    transition: transform .4s, box-shadow .4s, background .4s;
}
.teacher-card:hover .tc-info .tc-tag {
    background: linear-gradient(90deg, var(--c-vermilion), var(--c-gilt));
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 14px -4px rgba(230, 57, 70, .45);
    animation: tagPulse 1.8s ease-in-out infinite;
}
@keyframes tagPulse {
    0%, 100% { box-shadow: 0 6px 14px -4px rgba(230, 57, 70, .35); }
    50%     { box-shadow: 0 6px 22px -4px rgba(244, 185, 66, .7); }
}

/* ================ 校企合作 Logo 墙：多列纵向交错滚动（有图展图、无图降级为色块） ================ */
.partner-wall {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    height: 520px;
    overflow: hidden;
    position: relative;
    /* 上下渐隐，避免首尾强硬穿部 */
    -webkit-mask-image: linear-gradient(180deg, transparent 0, #000 10%, #000 90%, transparent 100%);
            mask-image: linear-gradient(180deg, transparent 0, #000 10%, #000 90%, transparent 100%);
}
.partner-col {
    position: relative;
    overflow: hidden;
}
.partner-track {
    display: flex;
    flex-direction: column;
    gap: 16px;
    will-change: transform;
    animation: partnerScrollUp 24s linear infinite;
}
.partner-col:nth-child(2) .partner-track {
    animation-name: partnerScrollDown;
    animation-duration: 28s;
}
.partner-col:nth-child(3) .partner-track {
    animation-duration: 32s;
    animation-delay: -6s;
}
.partner-col:nth-child(4) .partner-track {
    animation-name: partnerScrollDown;
    animation-duration: 26s;
    animation-delay: -4s;
}
.partner-wall:hover .partner-track { animation-play-state: paused; }

.partner-card {
    flex: 0 0 auto;
    aspect-ratio: 16 / 9;
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    box-shadow: 0 2px 8px -4px rgba(26, 27, 58, .08);
    transition: transform .4s cubic-bezier(.4, 0, .2, 1), box-shadow .4s, border-color .4s;
}
.partner-card img {
    max-width: 78%;
    max-height: 68%;
    object-fit: contain;
    transition: filter var(--t-base), transform var(--t-base);
}
.partner-card .partner-name {
    position: absolute;
    left: 0; right: 0; bottom: 8px;
    text-align: center;
    font-size: 12px;
    color: var(--c-text-muted);
    opacity: 0;
    transition: opacity var(--t-base);
    font-family: var(--font-serif);
    letter-spacing: 1px;
}
.partner-card:hover {
    transform: translateY(-4px) scale(1.03);
    box-shadow: 0 14px 28px -10px rgba(26, 27, 58, .22);
    border-color: transparent;
}
.partner-card:hover img { transform: scale(1.06); }
.partner-card:hover .partner-name { opacity: 1; }

/* 图片加载失败 → onerror 加 is-fallback → 展示品牌色块 + 名称 */
.partner-card.is-fallback {
    background: linear-gradient(135deg, var(--pc1, #8a5cf6) 0%, var(--pc2, #f4b942) 100%);
    border-color: transparent;
    box-shadow: 0 6px 18px -6px rgba(0, 0, 0, .18);
}
.partner-card.is-fallback::before {
    /* 微隐纹理，增强质感 */
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 20%, rgba(255,255,255,.22), transparent 45%),
        radial-gradient(circle at 80% 80%, rgba(0,0,0,.12), transparent 50%);
    pointer-events: none;
}
.partner-card.is-fallback img { display: none; }
.partner-card.is-fallback .partner-name {
    position: static;
    opacity: 1;
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 2px;
    text-shadow: 0 2px 6px rgba(0, 0, 0, .25);
    z-index: 1;
}

@keyframes partnerScrollUp {
    from { transform: translateY(0); }
    to   { transform: translateY(-50%); }
}
@keyframes partnerScrollDown {
    from { transform: translateY(-50%); }
    to   { transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
    .partner-track { animation: none !important; }
}

/* ================ 响应式 ================ */
@media (max-width: 1199px) {
    .hero-title { font-size: 56px; }
    .home-section { padding: 72px 0; }
    .partner-wall { grid-template-columns: repeat(3, 1fr); height: 460px; }
    .partner-col:nth-child(4) { display: none; }
}

@media (max-width: 991px) {
    .hero-title { font-size: 44px; letter-spacing: 4px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
    .stats::after { font-size: 120px; }
    .exhibition-grid {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: 240px 240px 240px;
    }
    .exhibition-grid .ex-card:nth-child(1) {
        grid-column: span 2;
        grid-row: span 1;
    }
    .news-layout { grid-template-columns: 1fr; }
    .partner-wall { grid-template-columns: repeat(2, 1fr); height: 420px; gap: 12px; }
    .partner-col:nth-child(3),
    .partner-col:nth-child(4) { display: none; }
    .hero-arrow { width: 44px; height: 44px; }
    .hero-arrow.is-prev { left: 16px; }
    .hero-arrow.is-next { right: 16px; }
    .hero-meta { right: 24px; bottom: 64px; }
    .hero-deco { font-size: 200px; }
    .stat-item:not(:last-child)::after { display: none; }
    .tm-arrow.is-prev { left: 4px; }
    .tm-arrow.is-next { right: 4px; }
}

@media (max-width: 767px) {
    .hero { min-height: 520px; }
    .hero-title { font-size: 30px; letter-spacing: 2px; margin-bottom: 16px; }
    .hero-sub { font-size: 14px; margin-bottom: 24px; }
    .hero-tag { margin-bottom: 16px; }
    .hero-dots { bottom: 64px; }
    .home-section { padding: 48px 0; }
    .stats { padding: 48px 0; }
    .stat-item .counter-num { font-size: 48px; }
    .stat-item .stat-suffix { font-size: 16px; }
    .exhibition-grid {
        grid-template-columns: 1fr;
        grid-template-rows: repeat(5, 200px);
    }
    .exhibition-grid .ex-card:nth-child(1) {
        grid-column: span 1;
    }
    .ex-card:nth-child(1) h3 { font-size: 24px; }
    .news-feature { min-height: 320px; }
    .news-feature h3 { font-size: 20px; }
    .partner-grid { grid-template-columns: repeat(2, 1fr); }
    .teacher-card { flex: 0 0 180px; }
    .tc-photo { aspect-ratio: 3 / 4; }
    .hero-arrow { display: none; }
    .hero-meta { display: none; }
    .hero-deco { display: none; }
    .hero-sun { width: 380px; height: 380px; margin-left: -190px; margin-top: -190px; filter: blur(20px); }
    .stats::after { display: none; }
    .stat-item .counter-num { font-size: 42px; }
    .ex-tabs { margin: -8px 0 24px; }
    .ex-tab { padding: 8px 18px; font-size: 13px; letter-spacing: 2px; }
    .tm-arrow { display: none; }
}