:root{
  --bg: #eaf4ff;

  --paper: rgba(255,255,255,.86);
  --paper2: rgba(255,255,255,.96);
  --border: rgba(15, 80, 160, .16);

  --text: #0c1c37;
  --muted: rgba(12, 28, 55, .66);

  --accent: #1e88ff;
  --accent2: #6a5cff;

  --wrap: 1120px;
  --radius: 18px;
  --shadow: 0 18px 60px rgba(20, 60, 120, .14);
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  color: var(--text);
  background: var(--bg);
  font: 16px/1.65 system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  overflow-x:hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main{
  flex: 1 0 auto;
}

/* 全站浅色几何纹理 */
body::before{
  content:"";
  position:fixed; inset:0;
  background-image: url("../img/bg/pattern.svg");
  background-size: 980px 980px;
  opacity: .22;
  pointer-events:none;
  z-index:-2;
}

/* 蓝紫晕染（让背景不死白） */
body::after{
  content:"";
  position:fixed; inset:-20%;
  background:
    radial-gradient(circle at 15% 12%, rgba(30,136,255,.24), transparent 56%),
    radial-gradient(circle at 85% 10%, rgba(106,92,255,.18), transparent 55%),
    radial-gradient(circle at 50% 85%, rgba(30,136,255,.14), transparent 60%);
  pointer-events:none;
  z-index:-1;
}

.wrap{
  width:min(var(--wrap), calc(100% - 40px));
  margin:0 auto;
}

/* 顶部导航 */
.topbar{
  position:sticky;
  top:0;
  z-index:50;
  backdrop-filter: blur(10px);
  background: rgba(255,255,255,.70);
  border-bottom: 1px solid rgba(15, 80, 160, .14);
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding: 12px 0;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  color: var(--text);
  text-decoration:none;
}
.brand-mark{
  width:14px; height:14px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 10px 24px rgba(30,136,255,.18);
}
.brand-text{ font-weight: 650; letter-spacing:.3px; }

.nav{
  display:flex;
  flex-wrap:wrap;
  gap: 14px;
}
.nav a{
  color: rgba(12, 28, 55, .72);
  text-decoration:none;
  font-size: 14px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
}
.nav a:hover{
  color: rgba(12, 28, 55, .92);
  border-color: rgba(30,136,255,.26);
  background: rgba(30,136,255,.10);
}

/* Hero */
.hero{
  position:relative;
  padding: 56px 0 28px;
}
.hero-bg{
  position:absolute; inset:0;
  background-image: url("../img/bg/hero-bg.svg");
  background-size: cover;
  background-position: center;
  opacity: .55;
  z-index:0;
}
.hero-inner{ position:relative; z-index:1; }

.hero-card{
  padding: 34px 28px;
  border-radius: calc(var(--radius) + 6px);
  background: rgba(255,255,255,.82);
  border: 1px solid rgba(15, 80, 160, .16);
  box-shadow: var(--shadow);
  max-width: 920px;
}
.hero h1{
  margin:0 0 10px;
  font-size: clamp(28px, 3.3vw, 44px);
  line-height:1.15;
  letter-spacing:.4px;
  color: var(--text);
}
.hero-sub{
  margin:0 0 18px;
  color: var(--muted);
  font-size: 16px;
}
.hero-chips{ display:flex; flex-wrap:wrap; gap:10px; margin-bottom: 14px; }
.chip{
  font-size: 13px;
  color: rgba(12, 28, 55, .72);
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(30,136,255,.20);
  background: rgba(30,136,255,.06);
}
.hero-note{
  margin:0;
  color: rgba(12, 28, 55, .62);
  font-size: 14px;
}

/* Sections */
.section{ padding: 26px 0; }
.section-soft{ position:relative; }
.section-soft::before{
  content:"";
  position:absolute; inset:0;
  background-image: url("../img/bg/section-bg.svg");
  background-size: 980px 980px;
  opacity: .18;
  pointer-events:none;
}
.section > .wrap{ position:relative; }

.section-head{
  display:flex;
  align-items:center;
  gap:10px;
  margin: 8px 0 14px;
}
.section-icon{
  width: 22px;
  height: 22px;
  filter: drop-shadow(0 10px 18px rgba(20, 60, 120, .12));
}
.section-title{
  margin:0;
  font-size: 22px;
  letter-spacing:.3px;
  color: var(--text);
}

/* Grid + Cards */
.grid{ display:grid; gap: 14px; }
.cards-3{ grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cards-2{ grid-template-columns: repeat(2, minmax(0, 1fr)); }

.card{
  border-radius: var(--radius);
  background: var(--paper);
  border: 1px solid var(--border);
  padding: 16px 16px;
  box-shadow: 0 10px 28px rgba(20, 60, 120, .10);
}
.card-wide{ padding: 18px 18px; }

.card h3{ margin: 0 0 8px; font-size: 16px; color: var(--text); }
.card p{ margin: 0 0 10px; color: var(--muted); }

.notice-row{
  display:grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 14px;
  align-items: stretch;
}
.notice-list{
  display:grid;
  gap: 10px;
}
.notice-card{
  padding: 12px 14px;
}
.notice-card h3{
  margin: 0 0 6px;
  font-size: 15px;
}
.notice-link{
  color: inherit;
  text-decoration: none;
}
.notice-link:hover{
  text-decoration: underline;
}
.notice-card p{
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}
.notice-excerpt{
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.notice-more{
  margin-top: 8px;
  text-align: right;
}
.notice-right{
  padding: 18px;
  box-shadow: var(--shadow);
  height: 100%;
}

.meta{
  font-size: 12px;
  color: rgba(12, 28, 55, .55);
  margin-bottom: 6px;
}
.link{
  color: rgba(30,136,255,.95);
  text-decoration: none;
  font-size: 14px;
}
.link:hover{ text-decoration: underline; }

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

/* Layout blocks */
.intro-grid{ grid-template-columns: 2fr 1fr; }
.region-grid{ grid-template-columns: 1fr 2fr; }
.region-grid .card-wide{ grid-column: 1 / -1; }
.review-grid{ grid-template-columns: 1fr; }

.kv{
  list-style:none;
  padding:0;
  margin:0;
  display:grid;
  gap: 8px;
}
.kv li{
  display:flex;
  justify-content:space-between;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 12px;
  background: rgba(30,136,255,.05);
  border: 1px solid rgba(15, 80, 160, .10);
}
.kv span{ color: rgba(12, 28, 55, .68); }
.kv b{ font-weight: 650; color: var(--text); }

/* Mini cards */
.mini-card{
  border-radius: 16px;
  padding: 14px 14px;
  background: rgba(255,255,255,.78);
  border: 1px solid rgba(15, 80, 160, .14);
}
.mini-card h4{ margin:0 0 8px; font-size: 15px; color: var(--text); }
.mini-card p{ margin:0; color: var(--muted); }
.mini-card p span{ color: rgba(12, 28, 55, .62); }

/* Tags */
.tags{
  list-style:none;
  margin: 10px 0 0;
  padding:0;
  display:grid;
  gap: 8px;
}
.tags li{
  padding: 8px 10px;
  border-radius: 12px;
  background: rgba(30,136,255,.05);
  border: 1px solid rgba(15, 80, 160, .10);
  color: var(--muted);
  font-size: 14px;
}

/* Logo wall */
.logo-wall{
  display:grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
  margin-top: 12px;
}
.logo-item{
  height: 54px;
  border-radius: 14px;
  border: 1px solid rgba(15, 80, 160, .12);
  background: rgba(255,255,255,.78);
  display:flex;
  align-items:center;
  justify-content:center;
  overflow:hidden;
}
.logo-item img{
  width: 88%;
  height: 70%;
  object-fit: contain;
}
.logo-item.logo-ph{
  position:relative;
}
.logo-item.logo-ph::after{
  content:"LOGO";
  font-size: 12px;
  color: rgba(12, 28, 55, .35);
  letter-spacing: 2px;
}
.logo-item.logo-ph img{ display:none; }

/* Support cards */
.support-grid{
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.support-card{
  border-radius: 16px;
  padding: 14px 14px;
  background: var(--paper);
  border: 1px solid var(--border);
  box-shadow: 0 10px 28px rgba(20, 60, 120, .10);
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 72px;
}
.support-logo{
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(255,255,255,.78);
  border: 1px solid rgba(15, 80, 160, .12);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.support-logo img{
  width: 80%;
  height: 80%;
  object-fit: contain;
  display: block;
}
.support-name{
  font-size: 14px;
  color: var(--text);
  font-weight: 600;
}

.unit-list{
  display:flex;
  flex-wrap:wrap;
  gap: 10px;
  margin-top: 14px;
}
.pill{
  font-size: 13px;
  color: rgba(12, 28, 55, .70);
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(30,136,255,.20);
  background: rgba(30,136,255,.06);
}

/* Review timeline */
.timeline{
  list-style:none;
  padding:0;
  margin:0;
  display:grid;
  gap: 12px;
}
.timeline li{
  padding: 12px 12px;
  border-radius: 16px;
  border: 1px solid rgba(15, 80, 160, .12);
  background: rgba(255,255,255,.78);
  display:grid;
  gap: 6px;
}
.timeline b{ font-size: 14px; color: var(--text); }
.timeline span{ color: var(--muted); font-size: 14px; }

/* Gallery */
.gallery{
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 10px;
}
.gallery-preview{
  max-height: 520px;
  overflow: hidden;
}
.gallery-more{
  margin-top: 12px;
  text-align: right;
}
.photo{
  margin:0;
  border-radius: 16px;
  border: 1px solid rgba(15, 80, 160, .12);
  background: rgba(255,255,255,.78);
  overflow:hidden;
}
.photo img{
  width:100%;
  height: 200px;
  object-fit: cover;
  display:block;
}
.photo figcaption{
  padding: 10px 12px;
  font-size: 13px;
  color: var(--muted);
}
.photo.photo-ph img{ display:none; }
.photo.photo-ph::before{
  content:"图片占位";
  display:flex;
  align-items:center;
  justify-content:center;
  height: 200px;
  color: rgba(12, 28, 55, .38);
  letter-spacing: 2px;
  background: rgba(30,136,255,.08);
}

/* Footer */
.footer{
  padding: 22px 0 40px;
  border-top: 1px solid rgba(15, 80, 160, .12);
  background: rgba(255,255,255,.55);
}
.footer-inner{
  display:flex;
  justify-content:space-between;
  gap: 16px;
  flex-wrap:wrap;
}
.footer-title{
  font-weight: 650;
  margin-bottom: 6px;
  color: var(--text);
}

/* Responsive */
@media (max-width: 980px){
  .cards-3{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .intro-grid{ grid-template-columns: 1fr; }
  .region-grid{ grid-template-columns: 1fr; }
  .review-grid{ grid-template-columns: 1fr; }
  .gallery{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .logo-wall{ grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .notice-row{ grid-template-columns: 1fr; }
  .notice-more{ text-align: left; }
}

@media (max-width: 620px){
  .cards-2{ grid-template-columns: 1fr; }
  .cards-3{ grid-template-columns: 1fr; }
  .gallery{ grid-template-columns: 1fr; }
  .logo-wall{ grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .nav{ display:none; }
}
/* ===== 精彩赛项（简介 + 规则 + 视频） ===== */

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

.event-card{
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 18px;
  box-shadow: 0 12px 32px rgba(20,60,120,.10);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.event-head{
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.event-title{
  margin: 0;
  font-size: 18px;
  color: var(--text);
}

.event-tag{
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(30,136,255,.10);
  border: 1px solid rgba(30,136,255,.22);
  color: rgba(12,28,55,.75);
}

.event-block h4{
  margin: 0 0 6px;
  font-size: 15px;
  color: var(--text);
}

.event-block p{
  margin: 0;
  color: var(--muted);
}

.event-rules{
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.event-rules li{
  margin: 4px 0;
}

/* 视频区域 */
.event-video{
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 */
  border-radius: 14px;
  overflow: hidden;
  background: rgba(30,136,255,.08);
  border: 1px dashed rgba(30,136,255,.28);
}

.event-video iframe{
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-ph{
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: rgba(12,28,55,.55);
  pointer-events: none;
}

/* 响应式 */
@media (max-width: 980px){
  .event-grid{
    grid-template-columns: 1fr;
  }
}
/* ===== 精彩赛项（简介 + 视频 + PDF） ===== */
.event-grid{
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.event-card{
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 18px;
  box-shadow: 0 12px 32px rgba(20,60,120,.10);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.event-head{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:12px;
}

.event-title{
  margin:0;
  font-size:18px;
  color: var(--text);
}

.event-tag{
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(30,136,255,.10);
  border: 1px solid rgba(30,136,255,.22);
  color: rgba(12,28,55,.75);
}

.event-block h4{
  margin: 0 0 6px;
  font-size: 15px;
  color: var(--text);
}

.event-block p{
  margin: 0;
  color: var(--muted);
}

.event-link{
  display:inline-block;
  margin-top: 8px;
  font-size: 14px;
  color: rgba(30,136,255,.95);
  text-decoration: none;
}
.event-link:hover{ text-decoration: underline; }

/* 视频（16:9） */
.event-video{
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  border-radius: 14px;
  overflow: hidden;
  background: rgba(30,136,255,.08);
  border: 1px dashed rgba(30,136,255,.28);
  margin-top: 8px;
}

.event-video iframe{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  border:0;
}

.video-ph{
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size: 14px;
  color: rgba(12,28,55,.55);
  pointer-events:none;
}

/* PDF 按钮 */
.pdf-row{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top: 8px;
}

.btn{
  appearance:none;
  border: 1px solid rgba(30,136,255,.25);
  background: rgba(30,136,255,.10);
  color: rgba(12, 28, 55, .92);
  padding: 8px 12px;
  border-radius: 999px;
  cursor:pointer;
  font-size: 14px;
  text-decoration:none;
}
.btn:hover{
  background: rgba(30,136,255,.14);
  border-color: rgba(30,136,255,.35);
}
.btn-ghost{
  background: rgba(255,255,255,.80);
  border-color: rgba(15, 80, 160, .16);
}

/* PDF 预览 */
.pdf-preview{
  position: relative;
  width: 100%;
  height: 360px;
  border-radius: 14px;
  overflow: hidden;
  background: rgba(30,136,255,.06);
  border: 1px solid rgba(15, 80, 160, .12);
  margin-top: 10px;
}

.pdf-preview iframe{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  border:0;
}

.pdf-ph{
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  color: rgba(12,28,55,.55);
  font-size: 14px;
  pointer-events:none;
}

/* 响应式 */
@media (max-width: 980px){
  .event-grid{ grid-template-columns: 1fr; }
  .pdf-preview{ height: 300px; }
}
.section{
  width: 100% !important;
  display: block !important;
  flex: 0 0 100% !important;
  grid-column: 1 / -1 !important;
}

/* ===== 亮蓝主题（更亮、更清爽） ===== */
:root{
  --bg: #eef6ff;                 /* 更亮的浅蓝底 */
  --paper: rgba(255,255,255,.82);
  --border: rgba(30,136,255,.18);

  --text: rgba(10, 24, 52, .92);
  --muted: rgba(10, 24, 52, .62);

  --accent: #3aa0ff;             /* 更亮的蓝 */
  --accent2: #77d1ff;

  --wrap: 1120px;
  --radius: 18px;
}

/* ===== Hero（用你那张图做背景，半屏，居中） ===== */
.hero{
  min-height: 52vh;
  display: flex;
  align-items: center;

  background: url("../img/bg/hero-tech.png") center / cover no-repeat;

  padding: 46px 0 34px;
}

.hero-wrap{
  display: flex;
  justify-content: center;
}

.hero-card{
  width: min(760px, 100%);
  background: rgba(255,255,255,.72);
  border: 1px solid rgba(30,136,255,.20);
  border-radius: 22px;
  box-shadow: 0 18px 60px rgba(20, 80, 160, .18);
  padding: 26px 24px;
  backdrop-filter: blur(8px);
  text-align: center;
}

.hero-badge{
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(30,136,255,.22);
  background: rgba(58,160,255,.10);
  color: rgba(10,24,52,.78);
  font-size: 14px;
  margin-bottom: 10px;
}

.hero-title{
  margin: 6px 0 8px;
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1.12;
  color: var(--text);
  letter-spacing: .3px;
}

.hero-time{
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 16px;
}

.hero-actions{
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* ===== 通用按钮（更亮） ===== */
.btn{
  appearance: none;
  border: 1px solid rgba(58,160,255,.30);
  background: rgba(58,160,255,.12);
  color: var(--text);
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 14px;
  text-decoration: none;
}
.btn:hover{
  background: rgba(58,160,255,.16);
  border-color: rgba(58,160,255,.40);
}
.btn-ghost{
  background: rgba(255,255,255,.74);
  border-color: rgba(30,136,255,.18);
}
.btn-sm{
  padding: 7px 12px;
  font-size: 13px;
}
.btn-disabled{
  opacity: .55;
  cursor: not-allowed;
  pointer-events: none;
}

/* ===== 精彩赛项：9个 + 每个带照片位 ===== */
.event-grid-9{
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.event-card2{
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 12px 34px rgba(20, 80, 160, .12);
  overflow: hidden;
  display: grid;
  grid-template-columns: 140px 1fr; /* 左图右文 */
  min-height: 148px;
}

.event-photo{
  background: rgba(58,160,255,.10);
  border-right: 1px solid rgba(30,136,255,.14);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(10,24,52,.52);
  font-size: 14px;
}
.event-photo img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

/* 照片占位（你现在看到“照片位”这块） */
.event-photo.ph{
  background:
    radial-gradient(circle at 30% 20%, rgba(119,209,255,.30), transparent 55%),
    radial-gradient(circle at 70% 60%, rgba(58,160,255,.22), transparent 58%),
    rgba(58,160,255,.08);
}

.event-body{
  padding: 14px 14px;
  display: grid;
  gap: 8px;
  align-content: start;
  align-items: start;
}

.event-name{
  margin: 0;
  font-size: 16px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.event-logo{
  width: 26px;
  height: 26px;
  flex: 0 0 26px;
  object-fit: contain;
  display: block;
}

.event-desc{
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.event-meta{
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.pill{
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(58,160,255,.12);
  border: 1px solid rgba(58,160,255,.22);
  color: rgba(10,24,52,.78);
}

.event-actions2{
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.event-actions2 .btn{
  display: inline-flex;
  align-items: center;
}

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

/* 响应式 */
@media (max-width: 980px){
  .event-grid-9{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .event-card2{ grid-template-columns: 130px 1fr; }
}
@media (max-width: 620px){
  .event-grid-9{ grid-template-columns: 1fr; }
  .event-card2{ grid-template-columns: 1fr; }
  .event-photo{ min-height: 160px; border-right: 0; border-bottom: 1px solid rgba(30,136,255,.14); }
  .hero-card{ padding: 22px 16px; }
}


.rule-links{
  display:grid;
  gap:8px;
  margin-bottom:12px;
  justify-items:start;
}


.contact-box{
  border: 1px solid rgba(15, 80, 160, .16);
  background: rgba(255,255,255,.8);
  border-radius: 12px;
  padding: 10px 12px;
  color: rgba(12, 28, 55, .85);
  margin-bottom: 12px;
}

.return-link{
  display: inline-block;
  margin-top: 12px;
}

.contact-title{
  font-size: 18px;      /* 放大 */
  font-weight: 600;     /* 加粗 */
  margin-bottom: 12px;  /* 和下面内容拉开距离 */
}