/* MK-32 赛事转播屏风格站点样式
   色板：赛场底 #0a0e17 / 区块底 #131b28 / 频道条 #0f1622
        青色 #22d3ee / 品红 #e0409a / 文字 #e8edf4 / 分隔线 #1f2a3a */

:root {
    --arena-bg: #0a0e17;
    --arena-surface: #131b28;
    --arena-deep: #0f1622;
    --arena-cyan: #22d3ee;
    --arena-magenta: #e0409a;
    --arena-text: #e8edf4;
    --arena-muted: #9fb0c4;
    --arena-line: #1f2a3a;
    --arena-radius: 8px;
    --arena-wrap: 1200px;
}

* {
    box-sizing: border-box;
}

[hidden] {
    display: none;
}

html {
    -webkit-text-size-adjust: 100%;
}

html body {
    margin: 0;
    background: var(--arena-bg);
    color: var(--arena-text);
    font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
    font-size: 15.5px;
    line-height: 1.9;
    overflow-x: hidden;
}

body img {
    display: block;
    max-width: 100%;
    height: auto;
    filter: saturate(1.05);
}

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

.wrap {
    width: 100%;
    max-width: var(--arena-wrap);
    margin: 0 auto;
    padding: 0 20px;
}

.skip-link {
    display: block;
    padding: 8px 20px;
    background: var(--arena-deep);
    color: var(--arena-cyan);
    font-size: 14px;
}

/* ---------- 顶部两行 Header ---------- */

.arena-head {
    position: sticky;
    top: 0;
    z-index: 40;
    background: var(--arena-deep);
    border-bottom: 1px solid var(--arena-line);
}

.arena-head.is-scrolled {
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.45);
}

.channel-row {
    background: var(--arena-deep);
    border-bottom: 1px solid var(--arena-line);
}

.channel-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 8px 18px;
    padding-top: 8px;
    padding-bottom: 8px;
}

.channel-note {
    margin: 0;
    color: var(--arena-muted);
    font-size: 12.5px;
    line-height: 1.7;
    max-width: 640px;
}

.channel-links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 20px;
}

.channel {
    display: inline-block;
    padding-bottom: 4px;
    border-bottom: 2px solid transparent;
    color: var(--arena-muted);
    font-size: 13.5px;
    letter-spacing: 0.04em;
}

.channel:hover {
    color: var(--arena-text);
}

.channel.is-current {
    border-bottom-color: var(--arena-cyan);
    color: var(--arena-text);
}

.main-row {
    background: var(--arena-bg);
}

.main-inner {
    display: flex;
    align-items: center;
    gap: 18px;
    padding-top: 12px;
    padding-bottom: 12px;
}

.brand {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 0 0 auto;
}

.brand-name {
    font-size: 19px;
    font-weight: 800;
    letter-spacing: 0.06em;
    line-height: 1.3;
}

.brand-sub {
    color: var(--arena-cyan);
    font-size: 11.5px;
    letter-spacing: 0.14em;
    line-height: 1.3;
}

.main-nav {
    display: flex;
    flex: 1 1 auto;
    align-items: center;
    justify-content: center;
    gap: 26px;
}

.main-nav a {
    color: var(--arena-muted);
    font-size: 14.5px;
}

.main-nav a:hover {
    color: var(--arena-cyan);
}

.head-cta {
    flex: 0 0 auto;
    padding: 8px 18px;
    border: 1px solid var(--arena-cyan);
    border-radius: var(--arena-radius);
    color: var(--arena-cyan);
    font-size: 14px;
}

.head-cta:hover {
    background: rgba(34, 211, 238, 0.12);
}

.menu-fold {
    flex: 0 0 auto;
    position: relative;
}

.menu-btn {
    padding: 8px 14px;
    border: 1px solid var(--arena-line);
    border-radius: var(--arena-radius);
    color: var(--arena-text);
    font-size: 14px;
    cursor: pointer;
    list-style: none;
}

.menu-btn::-webkit-details-marker {
    display: none;
}

.fold-panel {
    position: absolute;
    right: 0;
    top: calc(100% + 10px);
    width: 240px;
    padding: 14px 16px;
    background: var(--arena-surface);
    border: 1px solid var(--arena-line);
    border-radius: var(--arena-radius);
}

.fold-nav {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.fold-nav a {
    color: var(--arena-text);
    font-size: 15px;
}

.fold-nav a:hover {
    color: var(--arena-cyan);
}

.fold-note {
    margin: 12px 0 0;
    padding-top: 10px;
    border-top: 1px solid var(--arena-line);
    color: var(--arena-muted);
    font-size: 12.5px;
    line-height: 1.7;
}

.fold-note a {
    color: var(--arena-cyan);
}

/* ---------- 首屏 Hero：满宽图叠加文案 ---------- */

.arena-hero {
    background: var(--arena-bg);
}

.arena-figure {
    position: relative;
    margin: 0;
    aspect-ratio: 2 / 1;
    max-height: 620px;
    overflow: hidden;
}

.arena-figure img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 40%;
}

.arena-copy {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 18px;
    padding: 4% 6%;
    text-align: center;
    background: linear-gradient(180deg, rgba(10, 14, 23, 0.34), rgba(10, 14, 23, 0.82));
}

.arena-copy h1 {
    margin: 0;
    font-size: clamp(24px, 5.2vw, 50px);
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: 0.02em;
    overflow-wrap: anywhere;
}

.hero-note {
    margin: 0;
    max-width: 760px;
    color: var(--arena-text);
    font-size: 15px;
    line-height: 1.9;
}

.event-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.event-tags li {
    padding: 4px 12px;
    border: 1px solid rgba(34, 211, 238, 0.55);
    border-radius: 999px;
    color: var(--arena-cyan);
    font-size: 12.5px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.btn-main,
.btn-ghost {
    display: inline-block;
    padding: 11px 26px;
    border-radius: var(--arena-radius);
    font-size: 15px;
    text-align: center;
}

.btn-main {
    background: var(--arena-cyan);
    color: #06121a;
    font-weight: 700;
}

.btn-main:hover {
    background: #67e8f9;
}

.btn-ghost {
    border: 1px solid var(--arena-cyan);
    color: var(--arena-cyan);
}

.btn-ghost:hover {
    background: rgba(34, 211, 238, 0.12);
}

/* ---------- 通用区块与标题 ---------- */

main section {
    border-top: 1px solid var(--arena-line);
}

.sec-head {
    max-width: 760px;
    margin-bottom: 26px;
}

.sec-head h2,
.about-body-head h2,
.about-values-head h2,
.news-list-head h2,
.news-col-head,
.sport-faq-close h2 {
    margin: 0 0 10px;
    font-size: 24px;
    font-weight: 800;
    line-height: 1.4;
}

.sec-head p,
.about-body-head p,
.about-values-head p,
.news-list-head p {
    margin: 0;
    color: var(--arena-muted);
}

.arena-kicker {
    margin: 0 0 8px;
    color: var(--arena-magenta);
    font-size: 12.5px;
    letter-spacing: 0.22em;
}

/* ---------- 首页：赛事卡 ---------- */

.sec-events,
.sec-mode,
.sec-live,
.sec-news {
    padding: 54px 0;
    background: var(--arena-bg);
}

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

.event-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 16px;
    background: var(--arena-surface);
    border: 1px solid var(--arena-line);
    border-radius: var(--arena-radius);
}

.event-card:hover {
    border-color: var(--arena-cyan);
}

.event-thumb {
    margin: 0;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    border-radius: 6px;
}

.event-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 45%;
}

.event-card h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
    line-height: 1.5;
    overflow-wrap: anywhere;
}

.event-stage {
    margin: 0;
    color: var(--arena-muted);
    font-size: 14.5px;
}

.event-link {
    margin-top: auto;
    color: var(--arena-cyan);
    font-size: 14px;
}

.event-link:hover {
    color: #67e8f9;
}

/* ---------- 首页：模式节点 ---------- */

.mode-steps-5 {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 16px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.mode-step {
    padding: 18px 16px;
    background: var(--arena-surface);
    border: 1px solid var(--arena-line);
    border-radius: var(--arena-radius);
}

.mode-step:hover {
    border-color: var(--arena-cyan);
}

.mode-dot {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    margin-bottom: 10px;
    border: 1px solid var(--arena-cyan);
    border-radius: 50%;
    color: var(--arena-cyan);
    font-size: 13px;
}

.mode-step h3 {
    margin: 0 0 6px;
    font-size: 16.5px;
    font-weight: 700;
}

.mode-step p {
    margin: 0;
    color: var(--arena-muted);
    font-size: 14px;
}

/* ---------- 首页：赛程式清单 ---------- */

.live-list {
    background: var(--arena-surface);
    border: 1px solid var(--arena-line);
    border-radius: var(--arena-radius);
    overflow: hidden;
}

.live-head,
.live-row {
    display: grid;
    grid-template-columns: 140px 160px minmax(0, 1fr);
    gap: 14px;
    align-items: baseline;
}

.live-head {
    padding: 12px 18px;
    background: var(--arena-deep);
    color: var(--arena-cyan);
    font-size: 13px;
    letter-spacing: 0.08em;
}

.live-rows {
    margin: 0;
    padding: 0;
    list-style: none;
}

.live-row {
    padding: 14px 18px;
    border-top: 1px solid var(--arena-line);
    font-size: 14.5px;
}

.live-row:hover {
    background: rgba(34, 211, 238, 0.06);
}

.live-time {
    color: var(--arena-magenta);
    font-size: 13.5px;
}

.live-item {
    color: var(--arena-text);
    font-weight: 700;
}

.live-desc {
    color: var(--arena-muted);
}

/* ---------- 首页：客户端与 FAQ 服务带 ---------- */

.service-band {
    background: var(--arena-surface);
    padding: 54px 0;
}

.sec-client {
    border-top: 1px solid var(--arena-line);
}

.sec-faq {
    border-top: none;
}

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

.client-block {
    display: grid;
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 6px 18px;
    padding: 18px;
    background: var(--arena-bg);
    border: 1px solid var(--arena-line);
    border-radius: var(--arena-radius);
}

.client-block:hover {
    border-color: var(--arena-cyan);
}

.client-figure {
    grid-row: span 3;
    margin: 0;
    aspect-ratio: 4 / 5;
    overflow: hidden;
    border-radius: 6px;
}

.client-figure img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 30%;
}

.client-block h2 {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
}

.client-block p {
    margin: 0;
    color: var(--arena-muted);
    font-size: 14.5px;
}

.client-link {
    color: var(--arena-cyan);
    font-size: 14px;
}

.client-note {
    margin: 20px 0 0;
    padding-top: 16px;
    border-top: 1px solid var(--arena-line);
    color: var(--arena-muted);
    font-size: 14.5px;
}

.faq-arena {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.faq-item {
    padding: 14px 18px;
    background: var(--arena-bg);
    border: 1px solid var(--arena-line);
    border-radius: var(--arena-radius);
}

.faq-item[open] {
    border-color: var(--arena-cyan);
}

.faq-item summary {
    color: var(--arena-text);
    font-size: 15.5px;
    font-weight: 700;
    cursor: pointer;
}

.faq-item p {
    margin: 10px 0 0;
    color: var(--arena-muted);
    font-size: 14.5px;
}

/* ---------- 首页：新闻与收尾 ---------- */

.news-arena {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 22px;
}

.news-big {
    padding: 18px;
    background: var(--arena-surface);
    border: 1px solid var(--arena-line);
    border-radius: var(--arena-radius);
}

.news-big-figure {
    margin: 0 0 14px;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border-radius: 6px;
}

.news-big-figure img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-big h2 {
    margin: 0 0 8px;
    font-size: 20px;
    font-weight: 800;
    line-height: 1.5;
}

.news-big p {
    margin: 0 0 12px;
    color: var(--arena-muted);
    font-size: 14.5px;
}

.news-big-link {
    color: var(--arena-cyan);
    font-size: 14px;
}

.news-side-wrap h2 {
    margin: 0 0 12px;
    font-size: 18px;
    font-weight: 700;
}

.news-side {
    margin: 0;
    padding: 0;
    list-style: none;
}

.news-side li {
    padding: 12px 0;
    border-top: 1px solid var(--arena-line);
}

.news-tag {
    display: inline-block;
    margin-bottom: 6px;
    color: var(--arena-cyan);
    font-size: 12px;
    letter-spacing: 0.1em;
}

.news-side h3 {
    margin: 0 0 4px;
    font-size: 15.5px;
    font-weight: 700;
}

.news-side p {
    margin: 0;
    color: var(--arena-muted);
    font-size: 14px;
}

.cta-arena {
    position: relative;
    padding: 0 0 64px;
    background: var(--arena-deep);
    text-align: center;
    overflow: hidden;
}

.cta-arena::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -160px;
    width: 620px;
    height: 320px;
    transform: translateX(-50%);
    background: radial-gradient(circle, rgba(34, 211, 238, 0.30), rgba(34, 211, 238, 0));
    pointer-events: none;
}

.cta-banner {
    margin: 0 0 34px;
    aspect-ratio: 4 / 1;
    max-height: 240px;
    overflow: hidden;
}

.cta-banner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 55%;
}

.cta-copy {
    position: relative;
    z-index: 1;
    max-width: 720px;
    margin: 0 auto;
    padding: 0 20px;
}

.cta-copy h2 {
    margin: 0 0 12px;
    font-size: 28px;
    font-weight: 800;
}

.cta-copy p {
    margin: 0 0 22px;
    color: var(--arena-muted);
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

/* ---------- about ---------- */

.about-arena {
    position: relative;
    padding: 56px 0 0;
    background:
        linear-gradient(180deg, rgba(10, 14, 23, 0.94), rgba(10, 14, 23, 0.86)),
        repeating-linear-gradient(90deg, rgba(34, 211, 238, 0.16) 0 1px, transparent 1px 64px),
        repeating-linear-gradient(0deg, rgba(34, 211, 238, 0.12) 0 1px, transparent 1px 64px);
    border-top: none;
}

.about-arena-inner {
    max-width: 880px;
    margin: 0 auto;
    padding-bottom: 34px;
    text-align: center;
}

.about-arena h1 {
    margin: 0 0 14px;
    font-size: clamp(26px, 4.2vw, 46px);
    font-weight: 800;
    line-height: 1.3;
}

.arena-lead {
    margin: 0 auto;
    max-width: 700px;
    color: var(--arena-muted);
}

.about-banner {
    margin: 0;
    aspect-ratio: 16 / 9;
    max-height: 340px;
    overflow: hidden;
}

.about-banner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 35%;
}

.about-body {
    padding: 52px 0;
    background: var(--arena-bg);
}

.about-rows {
    display: flex;
    flex-direction: column;
}

.about-row {
    display: grid;
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 10px 30px;
    padding: 26px 0;
    border-top: 1px solid var(--arena-line);
}

.about-row h2 {
    margin: 0;
    font-size: 20px;
    font-weight: 800;
}

.about-row-text p {
    margin: 0 0 12px;
    color: var(--arena-muted);
}

.about-row-text p:last-child {
    margin-bottom: 0;
}

.about-values {
    padding: 52px 0;
    background: var(--arena-surface);
}

.about-values-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 220px;
    gap: 26px;
    align-items: start;
}

.about-value-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.value-item {
    padding: 18px;
    background: var(--arena-bg);
    border: 1px solid var(--arena-line);
    border-radius: var(--arena-radius);
}

.value-item:hover {
    border-color: var(--arena-cyan);
}

.value-tag {
    display: inline-block;
    margin-bottom: 8px;
    color: var(--arena-cyan);
    font-size: 12.5px;
    letter-spacing: 0.12em;
}

.value-item h3 {
    margin: 0 0 6px;
    font-size: 17px;
    font-weight: 700;
}

.value-item p {
    margin: 0;
    color: var(--arena-muted);
    font-size: 14.5px;
}

.values-figure {
    margin: 0;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    border-radius: var(--arena-radius);
}

.values-figure img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 60%;
}

.about-note {
    padding: 52px 0;
    background: var(--arena-bg);
    text-align: center;
}

.about-note-inner {
    max-width: 640px;
}

.about-note-text {
    margin: 0 0 18px;
    color: var(--arena-muted);
}

/* ---------- product ---------- */

.prod-intro {
    padding: 52px 0 34px;
    background: var(--arena-bg);
    border-top: none;
}

.prod-intro-grid {
    display: grid;
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 24px;
    align-items: center;
}

.prod-intro h1 {
    margin: 0 0 12px;
    font-size: clamp(25px, 3.8vw, 42px);
    font-weight: 800;
    line-height: 1.35;
}

.prod-lead {
    margin: 0;
    color: var(--arena-muted);
}

.prod-intro-figure {
    margin: 0;
    aspect-ratio: 21 / 9;
    max-height: 300px;
    overflow: hidden;
    border-radius: var(--arena-radius);
}

.prod-intro-figure img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 30%;
}

.prod-anchor-wrap {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px 18px;
    margin-top: 26px;
    padding: 14px 20px;
    background: var(--arena-surface);
    border: 1px solid var(--arena-line);
    border-radius: var(--arena-radius);
}

.prod-anchor-wrap h2 {
    margin: 0;
    color: var(--arena-cyan);
    font-size: 13.5px;
    letter-spacing: 0.16em;
    font-weight: 700;
}

.prod-anchors {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.prod-anchors a {
    padding: 5px 14px;
    border: 1px solid var(--arena-line);
    border-radius: 999px;
    color: var(--arena-text);
    font-size: 13.5px;
}

.prod-anchors a:hover {
    border-color: var(--arena-cyan);
    color: var(--arena-cyan);
}

.prod-cat {
    padding: 46px 0;
    background: var(--arena-bg);
}

.prod-cat-inner {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 28px;
}

.prod-cat-text h2 {
    margin: 0 0 12px;
    font-size: 23px;
    font-weight: 800;
}

.prod-cat-text p {
    margin: 0 0 12px;
    color: var(--arena-muted);
}

.prod-points {
    margin: 18px 0 0;
    padding: 0;
    list-style: none;
}

.prod-points li {
    padding: 8px 0 8px 18px;
    border-top: 1px solid var(--arena-line);
    color: var(--arena-text);
    font-size: 14.5px;
    position: relative;
}

.prod-points li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 18px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--arena-magenta);
}

.prod-cat-side {
    padding: 16px;
    background: var(--arena-surface);
    border: 1px solid var(--arena-line);
    border-radius: var(--arena-radius);
}

.prod-cat-figure {
    margin: 0 0 14px;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border-radius: 6px;
}

.prod-cat-figure-tall {
    aspect-ratio: 4 / 5;
}

.prod-cat-figure img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 40%;
}

.sched-label {
    margin: 0 0 8px;
    color: var(--arena-cyan);
    font-size: 12.5px;
    letter-spacing: 0.1em;
}

.prod-sched {
    margin: 0;
    padding: 0;
    list-style: none;
}

.prod-sched li {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 92px;
    gap: 10px;
    padding: 9px 0;
    border-top: 1px solid var(--arena-line);
    font-size: 13.5px;
}

.sched-time {
    color: var(--arena-muted);
}

.sched-item {
    color: var(--arena-text);
    font-weight: 700;
    text-align: right;
}

/* ---------- news ---------- */

.news-hero-page {
    padding: 50px 0 46px;
    background: var(--arena-bg);
    border-top: none;
}

.news-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 26px;
    align-items: center;
}

.news-hero-copy h1 {
    margin: 0 0 12px;
    font-size: clamp(25px, 3.8vw, 42px);
    font-weight: 800;
    line-height: 1.35;
}

.news-lead {
    margin: 0;
    color: var(--arena-muted);
}

.news-hero-figure {
    margin: 0;
    aspect-ratio: 16 / 9;
    max-height: 320px;
    overflow: hidden;
    border-radius: var(--arena-radius);
}

.news-hero-figure img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-story {
    margin-top: 40px;
}

.news-story h2 {
    margin: 0 0 10px;
    color: var(--arena-cyan);
    font-size: 13.5px;
    letter-spacing: 0.16em;
    font-weight: 700;
}

.news-story-card {
    padding: 22px;
    background: var(--arena-surface);
    border: 1px solid var(--arena-line);
    border-radius: var(--arena-radius);
}

.news-story-card h2 {
    margin: 0 0 10px;
    color: var(--arena-text);
    font-size: 21px;
    letter-spacing: 0;
    font-weight: 800;
}

.news-story-card p {
    margin: 0 0 12px;
    color: var(--arena-muted);
}

.news-story-card p:last-child {
    margin-bottom: 0;
}

.news-list-page {
    padding: 50px 0;
    background: var(--arena-surface);
}

.news-two-col {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
}

.news-item {
    padding: 16px 0;
    border-top: 1px solid var(--arena-line);
}

.news-item h3 {
    margin: 0 0 6px;
    font-size: 17px;
    font-weight: 700;
    line-height: 1.5;
    overflow-wrap: anywhere;
}

.news-item p {
    margin: 0;
    color: var(--arena-muted);
    font-size: 14.5px;
}

.news-archive-band {
    padding: 50px 0;
    background: var(--arena-bg);
}

.news-archive-inner {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 28px;
    align-items: start;
}

.news-archive-copy h2 {
    margin: 0 0 12px;
    font-size: 23px;
    font-weight: 800;
}

.news-archive-copy p {
    margin: 0 0 12px;
    color: var(--arena-muted);
}

.archive-months {
    margin: 18px 0 20px;
    padding: 0;
    list-style: none;
}

.archive-months li {
    display: grid;
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 12px;
    padding: 9px 0;
    border-top: 1px solid var(--arena-line);
    font-size: 14px;
}

.archive-month {
    color: var(--arena-cyan);
}

.archive-note {
    color: var(--arena-muted);
}

.news-archive-figures {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.news-archive-thumb {
    margin: 0;
    aspect-ratio: 21 / 9;
    overflow: hidden;
    border-radius: var(--arena-radius);
}

.news-archive-square {
    aspect-ratio: 1 / 1;
}

.news-archive-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 50%;
}

/* ---------- contact ---------- */

.contact-arena {
    padding: 52px 0 44px;
    background: var(--arena-bg);
    border-top: none;
}

.contact-arena-grid {
    display: grid;
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: 28px;
    align-items: center;
}

.contact-arena-copy h1 {
    margin: 0 0 12px;
    font-size: clamp(25px, 3.8vw, 42px);
    font-weight: 800;
    line-height: 1.35;
}

.contact-lead {
    margin: 0;
    color: var(--arena-muted);
}

.contact-arena-figure {
    margin: 0;
    aspect-ratio: 3 / 4;
    max-height: 300px;
    overflow: hidden;
    border-radius: var(--arena-radius);
}

.contact-arena-figure img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 25%;
}

.contact-grid {
    padding: 48px 0;
    background: var(--arena-surface);
}

.contact-split {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 28px;
    align-items: start;
}

.contact-note {
    padding: 18px 0;
    border-top: 1px solid var(--arena-line);
}

.contact-note h2 {
    margin: 0 0 8px;
    font-size: 19px;
    font-weight: 800;
}

.contact-note p {
    margin: 0 0 10px;
    color: var(--arena-muted);
    font-size: 14.5px;
}

.contact-note p:last-child {
    margin-bottom: 0;
}

.contact-form-wrap {
    padding: 22px;
    background: var(--arena-bg);
    border: 1px solid var(--arena-cyan);
    border-radius: var(--arena-radius);
}

.contact-form-wrap h2 {
    margin: 0 0 16px;
    font-size: 19px;
    font-weight: 800;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.field-label {
    color: var(--arena-muted);
    font-size: 13px;
}

.field-input {
    padding: 10px 12px;
    background: var(--arena-surface);
    border: 1px solid var(--arena-cyan);
    border-radius: 6px;
    color: var(--arena-text);
    font-family: inherit;
    font-size: 14.5px;
}

.field-area {
    resize: vertical;
    min-height: 96px;
}

.form-submit {
    border: none;
    cursor: pointer;
    font-family: inherit;
}

.form-status {
    margin: 0;
    color: var(--arena-cyan);
    font-size: 14px;
}

.form-note {
    margin: 14px 0 0;
    color: var(--arena-muted);
    font-size: 13px;
}

.contact-faq {
    padding: 48px 0;
    background: var(--arena-bg);
}

.faq-flat {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.faq-flat-item {
    padding: 18px;
    background: var(--arena-surface);
    border: 1px solid var(--arena-line);
    border-radius: var(--arena-radius);
}

.faq-flat-item:hover {
    border-color: var(--arena-cyan);
}

.faq-flat-item h3 {
    margin: 0 0 8px;
    font-size: 16px;
    font-weight: 700;
    line-height: 1.55;
    overflow-wrap: anywhere;
}

.faq-flat-item p {
    margin: 0;
    color: var(--arena-muted);
    font-size: 14.5px;
}

.contact-tips {
    padding: 46px 0;
    background: var(--arena-surface);
}

.contact-tips-grid {
    display: grid;
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: 26px;
    align-items: center;
}

.contact-tips-text h2 {
    margin: 0 0 14px;
    font-size: 22px;
    font-weight: 800;
}

.tips-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.tips-list li {
    padding: 10px 0 10px 20px;
    border-top: 1px solid var(--arena-line);
    color: var(--arena-muted);
    position: relative;
}

.tips-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 19px;
    width: 8px;
    height: 2px;
    background: var(--arena-magenta);
}

.contact-tips-figure {
    margin: 0;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    border-radius: var(--arena-radius);
}

.contact-tips-figure img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 70%;
}

.contact-close {
    padding: 0 0 52px;
    background: var(--arena-bg);
    text-align: center;
}

.contact-close-banner {
    margin: 0 0 30px;
    aspect-ratio: 6 / 1;
    max-height: 190px;
    overflow: hidden;
}

.contact-close-banner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 45%;
}

.contact-close-inner h2 {
    margin: 0 0 10px;
    font-size: 24px;
    font-weight: 800;
}

.contact-close-inner p {
    margin: 0 auto 20px;
    max-width: 640px;
    color: var(--arena-muted);
}

.close-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

/* ---------- sports ---------- */

.sport-arena-hero {
    padding: 0 0 42px;
    background: var(--arena-bg);
    border-top: none;
}

.sport-hero-figure {
    margin: 0 0 30px;
    aspect-ratio: 4 / 1;
    max-height: 260px;
    overflow: hidden;
}

.sport-hero-figure img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 50%;
}

.sport-hero-copy {
    max-width: 820px;
    text-align: center;
}

.sport-hero-copy h1 {
    margin: 0 0 14px;
    font-size: clamp(26px, 4.2vw, 46px);
    font-weight: 800;
    line-height: 1.3;
}

.sport-hero-note {
    margin: 0 0 18px;
    color: var(--arena-muted);
}

.sport-arena-cats {
    padding: 48px 0;
    background: var(--arena-surface);
}

.sport-cats-4 {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    border: 1px solid var(--arena-line);
    border-radius: var(--arena-radius);
    overflow: hidden;
}

.sport-cat {
    padding: 22px 18px;
    border-left: 1px solid var(--arena-line);
    background: var(--arena-bg);
}

.sport-cat:first-child {
    border-left: none;
}

.sport-cat:hover {
    background: rgba(34, 211, 238, 0.06);
}

.sport-cat-no {
    display: inline-block;
    margin-bottom: 8px;
    color: var(--arena-cyan);
    font-size: 13px;
    letter-spacing: 0.2em;
}

.sport-cat h3 {
    margin: 0 0 8px;
    font-size: 17px;
    font-weight: 700;
    line-height: 1.5;
    overflow-wrap: anywhere;
}

.sport-cat p {
    margin: 0 0 8px;
    color: var(--arena-muted);
    font-size: 14px;
}

.sport-cats-figure {
    margin: 22px 0 0;
    aspect-ratio: 21 / 9;
    max-height: 260px;
    overflow: hidden;
    border-radius: var(--arena-radius);
}

.sport-cats-figure img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 20%;
}

.sport-arena-schedule {
    padding: 48px 0;
    background: var(--arena-bg);
}

.sport-sched-grid {
    display: grid;
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: 28px;
    align-items: start;
}

.sched-head,
.sport-sched-8 li {
    display: grid;
    grid-template-columns: 160px 120px minmax(0, 1fr);
    gap: 14px;
    align-items: baseline;
}

.sched-head {
    padding: 11px 16px;
    background: var(--arena-deep);
    border-radius: var(--arena-radius) var(--arena-radius) 0 0;
    color: var(--arena-cyan);
    font-size: 13px;
    letter-spacing: 0.08em;
}

.sport-sched-8 {
    margin: 0;
    padding: 0;
    list-style: none;
    background: var(--arena-surface);
    border: 1px solid var(--arena-line);
    border-top: none;
    border-radius: 0 0 var(--arena-radius) var(--arena-radius);
    overflow: hidden;
}

.sport-sched-8 li {
    padding: 13px 16px;
    border-top: 1px solid var(--arena-line);
    font-size: 14px;
}

.sport-sched-8 li:first-child {
    border-top: none;
}

.sport-sched-8 li:hover {
    background: rgba(34, 211, 238, 0.06);
}

.sched-desc {
    color: var(--arena-muted);
}

.sport-sched-side {
    padding: 18px;
    background: var(--arena-surface);
    border: 1px solid var(--arena-line);
    border-radius: var(--arena-radius);
}

.sched-thumb {
    margin: 0 0 16px;
    aspect-ratio: 3 / 2;
    overflow: hidden;
    border-radius: 6px;
}

.sched-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.sport-sched-side h2 {
    margin: 0 0 10px;
    font-size: 19px;
    font-weight: 800;
}

.sport-sched-side p {
    margin: 0 0 12px;
    color: var(--arena-muted);
    font-size: 14.5px;
}

.sport-arena-faq {
    padding: 48px 0;
    background: var(--arena-surface);
}

.sport-faq {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.sport-faq-close {
    margin-top: 28px;
    padding-top: 26px;
    border-top: 1px solid var(--arena-line);
    max-width: 720px;
}

.sport-faq-close p {
    margin: 0 0 18px;
    color: var(--arena-muted);
}

/* ---------- footer ---------- */

.arena-foot {
    padding: 46px 0 26px;
    background: var(--arena-deep);
    border-top: 1px solid var(--arena-line);
}

.foot-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

.foot-col h3 {
    margin: 0 0 12px;
    padding-left: 10px;
    border-left: 3px solid var(--arena-cyan);
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.foot-col ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.foot-col li {
    padding: 5px 0;
}

.foot-col a {
    color: var(--arena-muted);
    font-size: 14px;
}

.foot-col a:hover {
    color: var(--arena-cyan);
}

.foot-brand {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--arena-line);
}

.foot-brand p {
    margin: 0;
    color: var(--arena-muted);
    font-size: 14px;
}

.foot-copy {
    margin-top: 10px;
}

.foot-copy p {
    margin: 0;
    color: var(--arena-muted);
    font-size: 12.5px;
}

/* ---------- 响应式 ---------- */

@media (max-width: 1023px) {
    .main-nav {
        display: none;
    }

    .event-cards-4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .mode-steps-5 {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .news-arena,
    .prod-cat-inner,
    .news-archive-inner,
    .contact-split,
    .sport-sched-grid,
    .prod-intro-grid,
    .news-hero-grid,
    .contact-tips-grid,
    .contact-arena-grid,
    .about-values-inner {
        grid-template-columns: minmax(0, 1fr);
    }

    .about-values-inner {
        gap: 22px;
    }

    .values-figure {
        aspect-ratio: 21 / 9;
    }

    .contact-arena-figure {
        aspect-ratio: 21 / 9;
        max-height: 220px;
    }

    .arena-figure {
        aspect-ratio: 16 / 9;
        max-height: 460px;
    }

    .sport-cats-4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .sport-cat:nth-child(3) {
        border-left: none;
    }

    .sport-cat:nth-child(n + 3) {
        border-top: 1px solid var(--arena-line);
    }

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

@media (min-width: 1024px) {
    .menu-fold {
        display: none;
    }
}

@media (max-width: 900px) {
    .about-row {
        grid-template-columns: minmax(0, 1fr);
        gap: 8px;
    }

    .about-row-text p {
        margin-bottom: 10px;
    }
}

@media (max-width: 767px) {
    html body {
        font-size: 15px;
    }

    .arena-copy {
        gap: 14px;
        padding: 6% 7%;
    }

    .hero-note {
        font-size: 14px;
        line-height: 1.8;
    }

    .arena-figure {
        aspect-ratio: 4 / 5;
        max-height: none;
    }

    .sec-events,
    .sec-mode,
    .sec-live,
    .sec-news,
    .service-band,
    .prod-cat,
    .news-list-page,
    .news-archive-band,
    .contact-grid,
    .contact-faq,
    .contact-tips,
    .sport-arena-cats,
    .sport-arena-schedule,
    .sport-arena-faq,
    .about-body,
    .about-values,
    .about-note {
        padding-top: 36px;
        padding-bottom: 36px;
    }

    .event-cards-4,
    .mode-steps-5,
    .client-pair,
    .faq-arena,
    .faq-flat,
    .sport-faq,
    .news-two-col,
    .about-value-grid,
    .sport-cats-4,
    .foot-grid,
    .news-archive-figures {
        grid-template-columns: minmax(0, 1fr);
    }

    .sport-cat {
        border-left: none;
        border-top: 1px solid var(--arena-line);
    }

    .sport-cat:first-child {
        border-top: none;
    }

    .live-head {
        display: none;
    }

    .live-row,
    .sched-head,
    .sport-sched-8 li,
    .archive-months li {
        grid-template-columns: minmax(0, 1fr);
        gap: 4px;
    }

    .sched-head {
        display: none;
    }

    .sport-sched-8 {
        border-top: 1px solid var(--arena-line);
        border-radius: var(--arena-radius);
    }

    .sport-sched-8 li:first-child {
        border-top: none;
    }

    .sched-item,
    .archive-month {
        text-align: left;
    }

    .client-block {
        grid-template-columns: 96px minmax(0, 1fr);
    }

    .prod-sched li {
        grid-template-columns: minmax(0, 1fr) 84px;
    }

    .cta-copy h2,
    .contact-close-inner h2 {
        font-size: 23px;
    }
}

@media (max-width: 480px) {
    .channel-inner {
        justify-content: flex-start;
    }

    .channel-note {
        font-size: 12px;
    }

    .brand-name {
        font-size: 17px;
    }

    .head-cta {
        padding: 7px 12px;
        font-size: 13px;
    }

    .main-inner {
        gap: 10px;
    }

    .arena-figure {
        aspect-ratio: 2 / 3;
    }

    .client-block {
        grid-template-columns: minmax(0, 1fr);
    }

    .client-figure {
        grid-row: auto;
        aspect-ratio: 16 / 9;
    }

    .btn-main,
    .btn-ghost {
        padding: 10px 20px;
        font-size: 14px;
    }
}