/* ==================== 报名详情页 guide.css ==================== */
:root{
  --navy-900:#081A33;
  --navy-800:#0B2547;
  --navy-700:#10315C;
  --blue-500:#2E7CF6;
  --blue-600:#1E5FD6;
  --red-500:#C8102E;
  --gold-400:#F2C14E;
  --ink-900:#0F1E35;
  --ink-600:#4A5A74;
  --ink-400:#8A97AC;
  --line:#E6EBF3;
  --bg:#F4F7FB;
  --white:#FFFFFF;
  --radius:16px;
  --shadow:0 10px 30px rgba(8,26,51,.08);
}
*{margin:0;padding:0;box-sizing:border-box}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",-apple-system,"Segoe UI",sans-serif;
  color:var(--ink-900);
  background:var(--bg);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
b{color:var(--navy-800)}

/* ========== 顶部导航 ========== */
.nav{
  position:sticky;top:0;z-index:100;
  background:rgba(11,37,71,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:0 2px 16px rgba(8,26,51,.25);
}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:14px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.nav-logo{text-decoration:none;color:#fff;display:flex;align-items:center;gap:10px}
.logo-text{font-size:20px;font-weight:700;letter-spacing:1px}
.logo-text em{font-style:normal;color:var(--gold-400);margin-left:6px;font-size:14px}
.btn-ghost{
  display:inline-block;padding:8px 18px;border-radius:999px;
  border:1px solid rgba(255,255,255,.45);color:#fff;font-size:14px;
  text-decoration:none;transition:all .25s;
}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-sm{padding:6px 14px;font-size:13px}

/* ========== 顶栏展示图 ========== */
.top-banner{background:var(--navy-900)}
.top-banner img{display:block;width:100%;object-fit:cover;max-height:340px}

/* ========== 页面容器 ========== */
.page{max-width:960px;margin:0 auto;padding:36px 24px 64px}
@media (max-width:640px){.page{padding:24px 16px 48px}}

/* ========== 核心提示卡 ========== */
.alert-card{
  display:flex;gap:18px;align-items:flex-start;
  background:linear-gradient(135deg,#FFF7E6 0%,#FFF0E0 100%);
  border:1px solid #F2C14E;border-left:6px solid var(--gold-400);
  border-radius:var(--radius);padding:22px 26px;margin-bottom:28px;
  box-shadow:0 6px 20px rgba(200,16,46,.06);
}
.alert-icon{flex:0 0 40px;color:#B8860B;margin-top:2px}
.alert-icon svg{width:36px;height:36px}
.alert-text h2{font-size:19px;color:#8A5A00;margin-bottom:6px}
.alert-text p{font-size:14.5px;color:#6B5200}
@media (max-width:640px){.alert-card{flex-direction:column;gap:10px;padding:18px}}

/* ========== 通用卡片 ========== */
.card{
  background:var(--white);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:30px 34px;margin-bottom:26px;
  border:1px solid var(--line);
}
@media (max-width:640px){.card{padding:22px 20px}}
.sec-head{margin-bottom:16px}
.sec-tag{
  display:inline-block;font-size:11px;font-weight:700;letter-spacing:2px;
  color:var(--blue-500);background:rgba(46,124,246,.1);
  padding:3px 10px;border-radius:4px;margin-bottom:10px;
}
.sec-head h2{font-size:22px;color:var(--navy-800)}
.para{font-size:15px;color:var(--ink-600);text-align:justify}
.para.center{text-align:center;font-size:16px}
.note{margin-top:14px;font-size:13px;color:var(--ink-400);border-top:1px dashed var(--line);padding-top:12px}

/* ========== 时间一览 ========== */
.time-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:6px}
@media (max-width:720px){.time-grid{grid-template-columns:repeat(2,1fr)}}
.time-item{
  background:linear-gradient(160deg,var(--navy-800),var(--navy-700));
  border-radius:12px;padding:16px 14px;text-align:center;color:#fff;
}
.time-label{font-size:12px;color:var(--gold-400);letter-spacing:2px;margin-bottom:6px}
.time-value{font-size:14.5px;font-weight:600;line-height:1.5}

/* ========== 举办单位 ========== */
.org-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-top:6px}
.org-item{
  background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:16px 18px;
}
.org-item span{
  display:inline-block;font-size:12px;font-weight:700;color:var(--blue-600);
  letter-spacing:2px;margin-bottom:8px;
}
.org-item p{font-size:14px;color:var(--ink-600)}

/* ========== 报名流程 ========== */
.flow{display:flex;flex-direction:column;gap:16px;margin-top:6px}
.flow-step{
  position:relative;background:var(--bg);border:1px solid var(--line);
  border-radius:12px;padding:18px 20px 18px 76px;
}
.flow-no{
  position:absolute;left:20px;top:18px;width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--blue-500),var(--blue-600));
  color:#fff;font-weight:700;font-size:17px;
}
.flow-step h3{font-size:16px;color:var(--navy-800);margin-bottom:6px}
.flow-step p{font-size:14px;color:var(--ink-600)}
.tag-done{
  display:inline-block;margin-left:8px;padding:1px 8px;border-radius:999px;
  font-size:12px;background:#E8F7EE;color:#0F8A3D;border:1px solid #BDE8CD;
  vertical-align:middle;
}
.flow-step.done{background:#F0FAF4;border-color:#C9EBD6}
.flow-step.done .flow-no{background:linear-gradient(135deg,#1FA963,#0F8A3D)}

/* ========== 竞赛规则 / 奖项 ========== */
.rules{display:flex;flex-direction:column;gap:16px;margin-top:6px}
.rule-block{
  border-left:4px solid var(--blue-500);background:var(--bg);
  border-radius:0 12px 12px 0;padding:16px 20px;
}
.rule-block h3{font-size:15.5px;color:var(--navy-800);margin-bottom:6px}
.rule-block p{font-size:14px;color:var(--ink-600);margin-bottom:4px}

/* ========== 页脚 ========== */
.footer{text-align:center;padding:28px 0 8px;color:var(--ink-400);font-size:13px}
.footer p{margin-top:6px}

/* ========== 入场动画 ========== */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}