/* ==========================================================================
   每日大赛mrds — 极简画廊 + 暗黑沉浸 设计系统
   主色 #1A1A1A | 辅助色 #D4AF37 | 背景 #000000 | 卡片 #242424 | 正文 #E0E0E0
   ========================================================================== */

:root {
  --color-dark: #1A1A1A;
  --color-gold: #D4AF37;
  --color-gold-soft: #b8962f;
  --color-bg: #000000;
  --color-card: #242424;
  --color-text: #E0E0E0;
  --color-muted: #9a9a9a;
  --color-line: #333333;
  --font-serif: "Noto Serif SC", "Songti SC", Georgia, serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --maxw: 1280px;
  --radius: 4px;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
  --transition: 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  font-size: 16px;
  overflow-x: hidden;
  letter-spacing: 0.02em;
}

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

a { color: inherit; text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-gold); }

h1, h2, h3, h4 { font-family: var(--font-serif); font-weight: 600; line-height: 1.3; color: #fff; }

ul { list-style: none; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.gold { color: var(--color-gold); }

/* ===== 跳过链接（无障碍） ===== */
.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 9999;
  background: var(--color-gold); color: #000; padding: 10px 18px; border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus { left: 0; }

/* ===== 顶部导航 ===== */
.site-header {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(212, 175, 55, 0.15);
  transition: background var(--transition);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 12px; font-family: var(--font-serif); }
.brand img { width: 38px; height: 38px; }
.brand-name { font-size: 1.25rem; font-weight: 700; color: #fff; letter-spacing: 0.06em; }
.brand-name b { color: var(--color-gold); font-weight: 700; }

.nav-menu { display: flex; align-items: center; gap: 30px; }
.nav-menu a { font-size: 0.95rem; color: var(--color-text); position: relative; padding: 6px 0; }
.nav-menu a::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 1px;
  background: var(--color-gold); transition: width var(--transition);
}
.nav-menu a:hover::after, .nav-menu a.active::after { width: 100%; }
.nav-menu a.active { color: var(--color-gold); }

.nav-cta {
  border: 1px solid var(--color-gold); color: var(--color-gold);
  padding: 8px 20px; border-radius: var(--radius); font-size: 0.9rem;
  transition: all var(--transition);
}
.nav-cta:hover { background: var(--color-gold); color: #000; }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; }
.nav-toggle span { display: block; width: 26px; height: 2px; background: var(--color-text); transition: var(--transition); }

/* ===== 通用区块 ===== */
section { position: relative; }
.section-pad { padding: 96px 0; }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 56px; }
.section-eyebrow {
  display: inline-block; font-size: 0.8rem; letter-spacing: 0.4em; text-transform: uppercase;
  color: var(--color-gold); margin-bottom: 16px; font-family: var(--font-sans);
}
.section-head h2 { font-size: 2.4rem; margin-bottom: 18px; }
.section-head p { color: var(--color-muted); font-size: 1.05rem; }

.btn {
  display: inline-block; padding: 14px 34px; border-radius: var(--radius);
  font-size: 0.95rem; letter-spacing: 0.08em; cursor: pointer; transition: all var(--transition);
  border: 1px solid var(--color-gold);
}
.btn-gold { background: var(--color-gold); color: #000; }
.btn-gold:hover { background: transparent; color: var(--color-gold); }
.btn-ghost { background: transparent; color: var(--color-gold); }
.btn-ghost:hover { background: var(--color-gold); color: #000; }

/* ===== 沉浸式焦点图（首页 Hero / 轮播） ===== */
.hero { position: relative; height: 100vh; min-height: 640px; overflow: hidden; }
.hero-slide {
  position: absolute; inset: 0; opacity: 0; transition: opacity 1.4s ease;
  background-size: cover; background-position: center;
}
.hero-slide.active { opacity: 1; }
.hero-slide::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.35) 0%, rgba(0,0,0,0.55) 50%, rgba(0,0,0,0.92) 100%);
}
.hero-slide img {
  width: 100%; height: 100%; object-fit: cover;
  animation: kenburns 12s ease-out infinite alternate;
}
@keyframes kenburns { from { transform: scale(1); } to { transform: scale(1.12); } }

.hero-content {
  position: absolute; inset: 0; z-index: 3; display: flex; flex-direction: column;
  align-items: center; justify-content: center; text-align: center; padding: 0 24px;
}
.hero-content h1 { font-size: clamp(2.4rem, 6vw, 5rem); letter-spacing: 0.04em; margin-bottom: 22px; text-shadow: 0 4px 30px rgba(0,0,0,0.7); }
.hero-content p { font-size: 1.2rem; color: #ddd; max-width: 680px; margin-bottom: 16px; }
.hero-actions { margin-top: 28px; display: flex; gap: 18px; flex-wrap: wrap; justify-content: center; }

/* 倒计时 */
.countdown { display: flex; gap: 22px; margin-top: 36px; }
.countdown-item { text-align: center; }
.countdown-num {
  font-family: var(--font-serif); font-size: 2.6rem; color: var(--color-gold);
  display: block; min-width: 72px; padding: 10px 0; border: 1px solid rgba(212,175,55,0.3);
  border-radius: var(--radius); background: rgba(0,0,0,0.4);
}
.countdown-label { font-size: 0.78rem; color: var(--color-muted); letter-spacing: 0.2em; margin-top: 8px; }

/* EXIF 悬浮信息 */
.hero-exif {
  position: absolute; bottom: 40px; right: 40px; z-index: 4;
  background: rgba(20,20,20,0.7); border: 1px solid rgba(212,175,55,0.25);
  padding: 16px 20px; border-radius: var(--radius); font-size: 0.8rem; color: var(--color-muted);
  backdrop-filter: blur(8px); max-width: 280px;
}
.hero-exif strong { color: var(--color-gold); display: block; margin-bottom: 6px; font-size: 0.78rem; letter-spacing: 0.15em; }
.hero-exif span { display: inline-block; margin-right: 14px; }

.hero-dots { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); z-index: 4; display: flex; gap: 12px; }
.hero-dots button { width: 10px; height: 10px; border-radius: 50%; border: 1px solid var(--color-gold); background: transparent; cursor: pointer; transition: var(--transition); }
.hero-dots button.active { background: var(--color-gold); }

/* ===== 赛事推荐卡片 ===== */
.grid { display: grid; gap: 28px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--color-card); border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--color-line); transition: transform var(--transition), border-color var(--transition);
}
.card:hover { transform: translateY(-8px); border-color: rgba(212,175,55,0.5); }
.card-media { position: relative; overflow: hidden; aspect-ratio: 4 / 3; }
.card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s ease; }
.card:hover .card-media img { transform: scale(1.08); }
.card-tag {
  position: absolute; top: 14px; left: 14px; background: var(--color-gold); color: #000;
  font-size: 0.72rem; padding: 4px 12px; border-radius: 2px; letter-spacing: 0.1em;
}
.card-tag.closed { background: #555; color: #ddd; }
.card-body { padding: 24px; }
.card-body h3 { font-size: 1.25rem; margin-bottom: 10px; }
.card-body p { color: var(--color-muted); font-size: 0.92rem; margin-bottom: 16px; }
.card-meta { display: flex; justify-content: space-between; align-items: center; font-size: 0.82rem; color: var(--color-muted); border-top: 1px solid var(--color-line); padding-top: 14px; }
.card-link { color: var(--color-gold); font-size: 0.88rem; }

/* ===== 赛道切换画廊 ===== */
.track-tabs { display: flex; justify-content: center; gap: 14px; margin-bottom: 44px; flex-wrap: wrap; }
.track-tab {
  background: transparent; border: 1px solid var(--color-line); color: var(--color-text);
  padding: 10px 26px; border-radius: 40px; cursor: pointer; font-size: 0.9rem; transition: all var(--transition);
  font-family: var(--font-sans);
}
.track-tab:hover { border-color: var(--color-gold); color: var(--color-gold); }
.track-tab.active { background: var(--color-gold); color: #000; border-color: var(--color-gold); }

.track-panel { display: none; animation: fadeIn 0.8s ease; }
.track-panel.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

/* ===== 瀑布流画廊 ===== */
.masonry { columns: 3; column-gap: 22px; }
.masonry-item { break-inside: avoid; margin-bottom: 22px; position: relative; overflow: hidden; border-radius: var(--radius); cursor: zoom-in; }
.masonry-item img { width: 100%; transition: transform 1.2s ease, filter var(--transition); }
.masonry-item:hover img { transform: scale(1.06); filter: brightness(1.08); }
.masonry-caption {
  position: absolute; left: 0; bottom: 0; width: 100%; padding: 28px 18px 14px;
  background: linear-gradient(transparent, rgba(0,0,0,0.85)); opacity: 0; transition: opacity var(--transition);
}
.masonry-item:hover .masonry-caption { opacity: 1; }
.masonry-caption h4 { font-size: 1.05rem; margin-bottom: 4px; }
.masonry-caption span { font-size: 0.8rem; color: var(--color-gold); }

/* ===== 评委卡 ===== */
.judge-card { text-align: center; background: var(--color-card); padding: 32px 22px; border-radius: var(--radius); border: 1px solid var(--color-line); transition: var(--transition); }
.judge-card:hover { border-color: rgba(212,175,55,0.5); transform: translateY(-6px); }
.judge-avatar { width: 130px; height: 130px; border-radius: 50%; object-fit: cover; margin: 0 auto 20px; border: 2px solid var(--color-gold); }
.judge-card h3 { font-size: 1.2rem; margin-bottom: 4px; }
.judge-title { color: var(--color-gold); font-size: 0.85rem; margin-bottom: 14px; letter-spacing: 0.05em; }
.judge-quote { color: var(--color-muted); font-size: 0.9rem; font-style: italic; line-height: 1.7; }

/* ===== 评委打分进度条 ===== */
.score-board { background: var(--color-card); padding: 36px; border-radius: var(--radius); border: 1px solid var(--color-line); }
.score-row { margin-bottom: 22px; }
.score-row:last-child { margin-bottom: 0; }
.score-label { display: flex; justify-content: space-between; font-size: 0.9rem; margin-bottom: 8px; }
.score-label span:last-child { color: var(--color-gold); font-family: var(--font-serif); }
.score-bar { height: 8px; background: #111; border-radius: 4px; overflow: hidden; }
.score-fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--color-gold-soft), var(--color-gold)); border-radius: 4px; transition: width 1.6s cubic-bezier(0.22,1,0.36,1); }

/* ===== 参赛步骤 ===== */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
.step { background: var(--color-card); padding: 32px 24px; border-radius: var(--radius); border: 1px solid var(--color-line); position: relative; }
.step::before {
  counter-increment: step; content: "0" counter(step); font-family: var(--font-serif);
  font-size: 2.4rem; color: rgba(212,175,55,0.3); position: absolute; top: 18px; right: 22px;
}
.step h3 { font-size: 1.15rem; margin-bottom: 10px; }
.step p { color: var(--color-muted); font-size: 0.9rem; }

/* ===== 放大镜灯箱 ===== */
.lightbox {
  position: fixed; inset: 0; z-index: 2000; background: rgba(0,0,0,0.95);
  display: none; align-items: center; justify-content: center; flex-direction: column; padding: 40px;
}
.lightbox.open { display: flex; }
.lightbox-stage { position: relative; max-width: 90vw; max-height: 78vh; overflow: hidden; cursor: zoom-in; border: 1px solid rgba(212,175,55,0.3); }
.lightbox-stage img { max-width: 90vw; max-height: 78vh; transition: transform 0.1s linear; transform-origin: center center; }
.lightbox-stage.zoomed { cursor: crosshair; }
.lightbox-caption { margin-top: 20px; text-align: center; color: var(--color-muted); }
.lightbox-caption h4 { color: #fff; margin-bottom: 6px; }
.lightbox-hint { font-size: 0.8rem; color: var(--color-gold); margin-top: 8px; }
.lightbox-close { position: absolute; top: 28px; right: 38px; background: none; border: none; color: #fff; font-size: 2.2rem; cursor: pointer; line-height: 1; }
.lightbox-close:hover { color: var(--color-gold); }

/* ===== 专题 / 通用大图横幅 ===== */
.page-hero { position: relative; height: 52vh; min-height: 360px; display: flex; align-items: center; justify-content: center; text-align: center; overflow: hidden; margin-top: 0; }
.page-hero img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.page-hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(rgba(0,0,0,0.4), rgba(0,0,0,0.8)); }
.page-hero-inner { position: relative; z-index: 2; padding: 0 24px; }
.page-hero h1 { font-size: clamp(2rem, 5vw, 3.4rem); margin-bottom: 14px; }
.page-hero p { color: #ccc; max-width: 620px; margin: 0 auto; }

/* 面包屑 */
.breadcrumb { font-size: 0.85rem; color: var(--color-muted); padding: 20px 0; }
.breadcrumb a:hover { color: var(--color-gold); }
.breadcrumb span { margin: 0 8px; color: var(--color-line); }

/* 内容块 */
.content-block { margin-bottom: 64px; }
.content-block h2 { font-size: 1.8rem; margin-bottom: 20px; padding-left: 16px; border-left: 3px solid var(--color-gold); }
.content-block p { color: var(--color-text); margin-bottom: 16px; }
.prose p { margin-bottom: 16px; color: #cfcfcf; }
.prose strong { color: #fff; }

/* 规则列表 */
.rule-list { display: grid; gap: 16px; }
.rule-item { background: var(--color-card); border: 1px solid var(--color-line); padding: 20px 24px; border-radius: var(--radius); display: flex; gap: 16px; }
.rule-item .num { color: var(--color-gold); font-family: var(--font-serif); font-size: 1.4rem; flex-shrink: 0; }

/* FAQ */
.faq-item { border-bottom: 1px solid var(--color-line); }
.faq-q { width: 100%; text-align: left; background: none; border: none; color: #fff; font-size: 1.05rem; padding: 22px 40px 22px 0; cursor: pointer; position: relative; font-family: var(--font-serif); }
.faq-q::after { content: "+"; position: absolute; right: 6px; top: 50%; transform: translateY(-50%); color: var(--color-gold); font-size: 1.5rem; transition: var(--transition); }
.faq-q.open::after { transform: translateY(-50%) rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height var(--transition); color: var(--color-muted); }
.faq-a p { padding-bottom: 22px; }

/* 表格 */
.table-wrap { overflow-x: auto; }
table.data { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
table.data th, table.data td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--color-line); }
table.data th { color: var(--color-gold); font-weight: 600; letter-spacing: 0.05em; }
table.data tr:hover td { background: rgba(212,175,55,0.04); }

/* 表单 */
.form-grid { display: grid; gap: 22px; max-width: 760px; }
.form-field label { display: block; margin-bottom: 8px; font-size: 0.9rem; color: var(--color-text); }
.form-field input, .form-field select, .form-field textarea {
  width: 100%; padding: 14px 16px; background: var(--color-card); border: 1px solid var(--color-line);
  border-radius: var(--radius); color: var(--color-text); font-family: var(--font-sans); font-size: 0.95rem;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { outline: none; border-color: var(--color-gold); }
.upload-zone { border: 2px dashed var(--color-line); border-radius: var(--radius); padding: 48px 24px; text-align: center; color: var(--color-muted); transition: var(--transition); cursor: pointer; }
.upload-zone:hover { border-color: var(--color-gold); color: var(--color-gold); }

/* 资讯列表 */
.news-item { display: grid; grid-template-columns: 320px 1fr; gap: 28px; background: var(--color-card); border: 1px solid var(--color-line); border-radius: var(--radius); overflow: hidden; margin-bottom: 28px; transition: var(--transition); }
.news-item:hover { border-color: rgba(212,175,55,0.5); }
.news-item img { width: 100%; height: 100%; object-fit: cover; min-height: 220px; }
.news-body { padding: 30px; }
.news-body h3 { font-size: 1.4rem; margin-bottom: 12px; }
.news-date { font-size: 0.8rem; color: var(--color-gold); letter-spacing: 0.1em; }

/* 下载页 */
.download-card { display: flex; align-items: center; justify-content: space-between; background: var(--color-card); border: 1px solid var(--color-line); padding: 24px 30px; border-radius: var(--radius); margin-bottom: 18px; gap: 20px; flex-wrap: wrap; }
.download-card .info h3 { font-size: 1.15rem; margin-bottom: 6px; }
.download-card .info p { color: var(--color-muted); font-size: 0.88rem; }
.download-meta { font-size: 0.8rem; color: var(--color-muted); }

/* 搜索 */
.search-box { display: flex; gap: 12px; max-width: 680px; margin: 0 auto 48px; }
.search-box input { flex: 1; padding: 16px 20px; background: var(--color-card); border: 1px solid var(--color-line); border-radius: var(--radius); color: #fff; font-size: 1rem; }
.search-box input:focus { outline: none; border-color: var(--color-gold); }
.search-result { background: var(--color-card); border: 1px solid var(--color-line); padding: 22px 26px; border-radius: var(--radius); margin-bottom: 16px; }
.search-result h3 { font-size: 1.15rem; margin-bottom: 6px; }
.search-result a { color: var(--color-gold); }
.search-result .url { font-size: 0.78rem; color: var(--color-muted); }

/* 错误页 */
.error-page { min-height: 80vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 120px 24px 60px; }
.error-code { font-family: var(--font-serif); font-size: clamp(6rem, 18vw, 12rem); color: var(--color-gold); line-height: 1; opacity: 0.85; }

/* 合规页正文 */
.legal { max-width: 860px; margin: 0 auto; }
.legal h2 { font-size: 1.5rem; margin: 36px 0 16px; }
.legal h3 { font-size: 1.15rem; margin: 24px 0 10px; color: var(--color-gold); }
.legal p, .legal li { color: #cfcfcf; margin-bottom: 12px; }
.legal ul { padding-left: 22px; list-style: disc; }
.legal ul li { margin-bottom: 8px; }

/* 关键词标签 */
.keyword-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; justify-content: center; }
.keyword-tags span { font-size: 0.8rem; color: var(--color-muted); border: 1px solid var(--color-line); padding: 6px 16px; border-radius: 30px; }

/* ===== 页脚 ===== */
.site-footer { background: var(--color-dark); border-top: 1px solid var(--color-line); padding: 70px 0 30px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 48px; }
.footer-brand .brand { margin-bottom: 18px; }
.footer-brand p { color: var(--color-muted); font-size: 0.9rem; max-width: 320px; }
.footer-col h4 { font-size: 0.95rem; color: #fff; margin-bottom: 18px; letter-spacing: 0.08em; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: var(--color-muted); font-size: 0.88rem; }
.footer-col ul li a:hover { color: var(--color-gold); }
.footer-bottom { border-top: 1px solid var(--color-line); padding-top: 26px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 14px; font-size: 0.82rem; color: var(--color-muted); }
.footer-bottom a { color: var(--color-muted); }
.footer-domain { color: var(--color-gold); }

/* ===== 滚动淡入 ===== */
.reveal { opacity: 0; transform: translateY(36px); transition: opacity 0.9s ease, transform 0.9s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* 回到顶部 */
.to-top { position: fixed; bottom: 30px; right: 30px; width: 46px; height: 46px; border-radius: 50%; background: var(--color-gold); color: #000; border: none; font-size: 1.2rem; cursor: pointer; opacity: 0; pointer-events: none; transition: var(--transition); z-index: 900; }
.to-top.show { opacity: 1; pointer-events: auto; }

/* ===== 响应式 ===== */
@media (max-width: 992px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .masonry { columns: 2; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-menu {
    position: fixed; top: 72px; right: 0; width: 78%; max-width: 320px; height: calc(100vh - 72px);
    background: var(--color-dark); flex-direction: column; align-items: flex-start; gap: 0;
    padding: 24px; transform: translateX(100%); transition: transform var(--transition);
    border-left: 1px solid var(--color-line);
  }
  .nav-menu.open { transform: translateX(0); }
  .nav-menu a { width: 100%; padding: 14px 0; border-bottom: 1px solid var(--color-line); }
  .nav-cta { margin-top: 16px; }
  .nav-toggle { display: flex; }
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .masonry { columns: 1; }
  .steps { grid-template-columns: 1fr; }
  .news-item { grid-template-columns: 1fr; }
  .news-item img { min-height: 200px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .hero-exif { display: none; }
  .section-pad { padding: 64px 0; }
  .section-head h2 { font-size: 1.9rem; }
  .countdown { gap: 12px; }
  .countdown-num { font-size: 1.8rem; min-width: 56px; }
}