/* ============================================================
   苏高职体育文化节平台 · 共享设计系统 v2
   响应式 / 动效 / 可访问性基础设施
   ============================================================ */
:root{
  --brand:#ff5a1f; --brand-2:#ffb800;
  --ink:#0f1b33; --muted:#4e5f7a;
  --bg:#f5f7fb; --card:#ffffff; --line:#e6eaf2;
  --blue:#2563eb; --green:#10b981; --red:#ef4444; --gold:#d9a406;
  --radius:18px; --radius-sm:12px;
  --shadow:0 10px 30px rgba(15,27,51,.08);
  --shadow-lg:0 18px 44px rgba(15,27,51,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei","Segoe UI",system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased}
::selection{background:rgba(255,90,31,.25)}
a{text-decoration:none;color:inherit}
button{font-family:inherit}
img,svg{max-width:100%}
.wrap{max-width:1140px;margin:0 auto;padding:0 22px}
section{scroll-margin-top:96px}

/* ---------- 可访问性：键盘焦点可见 / 动效减弱 ---------- */
:focus{outline:none}
:focus-visible{outline:3px solid rgba(255,90,31,.55);outline-offset:2px;border-radius:8px}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* ============ 导航 ============ */
.nav{position:sticky;top:0;left:0;right:0;z-index:90;background:rgba(255,255,255,.88);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:0 1px 0 var(--line)}
.nav-in{max-width:1140px;margin:0 auto;padding:0 22px;height:66px;display:flex;align-items:center;gap:22px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:16.5px;white-space:nowrap}
.logo .mark{width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,var(--brand),var(--brand-2));display:flex;align-items:center;justify-content:center;font-size:20px;box-shadow:0 6px 14px rgba(255,90,31,.35);flex:none;transition:transform .3s var(--ease)}
.logo:hover .mark{transform:rotate(-8deg) scale(1.06)}
.logo small{display:block;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.5px}
.nav-links{display:flex;gap:4px;margin-left:auto}
.nav-links a{position:relative;padding:8px 14px;border-radius:10px;font-size:14.5px;color:var(--ink);transition:color .2s;white-space:nowrap}
.nav-links a::after{content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2.5px;border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--brand-2));transform:scaleX(0);transform-origin:left;transition:transform .28s var(--ease)}
.nav-links a:hover{color:var(--brand)}
.nav-links a:hover::after{transform:scaleX(.6)}
.nav-links a.active{background:#fff0e8;color:var(--brand);font-weight:700}
.nav-links a.active::after{transform:scaleX(1)}
.nav-cta{display:inline-flex;align-items:center;gap:6px;background:linear-gradient(135deg,var(--brand),#ff7a3d);color:#fff;padding:9px 20px;font-size:14px;font-weight:700;border-radius:12px;border:none;cursor:pointer;box-shadow:0 6px 16px rgba(255,90,31,.35);transition:.25s var(--ease);white-space:nowrap}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 10px 22px rgba(255,90,31,.45)}
.nav-cta:active{transform:translateY(0) scale(.97)}
.nav-cta[disabled]{background:#c9cfda;box-shadow:none;cursor:not-allowed;transform:none}
.burger{display:none;margin-left:auto;font-size:22px;background:none;border:none;cursor:pointer;color:var(--ink);padding:8px;border-radius:10px}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;cursor:pointer;font-weight:700;border-radius:12px;transition:.22s var(--ease);text-align:center}
.btn:active{transform:translateY(1px) scale(.97)}
.btn-primary{background:linear-gradient(135deg,var(--brand),#ff7a3d);color:#fff;padding:12px 26px;font-size:15px;box-shadow:0 8px 20px rgba(255,90,31,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,90,31,.45)}
.btn-sm{padding:8px 16px;font-size:13.5px}
.btn-xs{padding:5px 12px;font-size:12.5px;border-radius:9px}
.btn-outline{background:#fff;border:1.5px solid var(--line);color:var(--ink);padding:10px 18px;font-size:14px}
.btn-outline:hover{border-color:var(--brand);color:var(--brand)}
.btn-green{background:linear-gradient(135deg,#10b981,#34d399);color:#fff;padding:8px 16px;font-size:13.5px;box-shadow:0 6px 14px rgba(16,185,129,.3)}
.btn-green:hover{filter:brightness(1.06)}
.btn-red{background:#fff;border:1.5px solid #f3c1c1;color:var(--red);padding:8px 16px;font-size:13.5px}
.btn-red:hover{background:#fef2f2}
.btn[disabled]{background:#c9cfda!important;color:#fff!important;box-shadow:none!important;cursor:not-allowed;transform:none!important;border-color:transparent!important}

/* ============ 子页头 ============ */
.page-hero{position:relative;overflow:hidden;color:#fff;padding:52px 0 44px;background:linear-gradient(135deg,#0d1f4d 0%,#16306e 55%,#0b1530 100%)}
.page-hero::before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(255,90,31,.4),transparent 65%);top:-160px;right:-80px;animation:heroGlow 9s ease-in-out infinite alternate}
@keyframes heroGlow{to{transform:translate(-40px,30px) scale(1.15)}}
.page-hero::after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(105deg,transparent 0 46px,rgba(255,255,255,.045) 46px 47px);pointer-events:none}
.page-hero .wrap{position:relative;z-index:2;display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap}
.page-hero .crumb{font-size:clamp(10.5px,2.9vw,13px);letter-spacing:clamp(.5px,.22vw,2px);color:rgba(255,255,255,.6);margin-bottom:10px;white-space:nowrap}
.page-hero h1{font-size:clamp(22px,5.4vw,38px);font-weight:900;letter-spacing:clamp(1px,.3vw,2px);white-space:nowrap}
.page-hero h1 small{font-size:.55em;font-weight:600;color:rgba(255,255,255,.75);margin-left:12px;letter-spacing:1px}
.page-hero .sub{margin-top:8px;color:rgba(255,255,255,.72);font-size:clamp(11.5px,3vw,14px);white-space:nowrap}
.page-hero .hero-chips{display:flex;gap:8px;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;max-width:100%}
.page-hero .hero-chips::-webkit-scrollbar{display:none}
.page-hero .hero-chips span{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);padding:7px 13px;border-radius:99px;font-size:clamp(10.5px,2.9vw,13px);white-space:nowrap;flex:0 0 auto;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}

/* ============ 演示提示条 ============ */
.demo-banner{background:#fff8e6;border-bottom:1px solid #f5e3b3;color:#8a6410;font-size:13px;padding:9px 0}
.demo-banner b{color:#b97900}

/* ============ 通用区块 ============ */
.sec{padding:56px 0}
.sec-head{text-align:center;margin-bottom:36px}
.sec-head .tag{display:inline-block;background:#fff0e8;color:var(--brand);font-weight:700;font-size:12.5px;padding:5px 16px;border-radius:99px;letter-spacing:2px;margin-bottom:10px}
.sec-head h2{font-size:clamp(22px,3.2vw,30px);font-weight:900;letter-spacing:1px}
.sec-head p{color:var(--muted);margin-top:8px;font-size:14.5px}

/* ============ 徽章 / 标签 ============ */
.chip{display:inline-flex;align-items:center;gap:4px;font-size:12px;padding:3px 10px;border-radius:99px;background:#eef2fb;color:var(--blue);font-weight:600}
.chip.team{background:#fff6e5;color:#b97900}
.chip.st-ok{background:#e7f9f0;color:#0a9d63}
.chip.st-hot{background:#fff3e0;color:#c26a00}
.chip.st-full{background:#fdeaea;color:#d43c3c}
.chip.st-live{background:linear-gradient(120deg,var(--brand),var(--brand-2));color:#fff;animation:pulse 1.6s infinite}
.chip.st-wait{background:#eef1f6;color:#7b8aa5}
.chip.cat-run{background:#e8f0fe;color:#2563eb}
.chip.cat-field{background:#f0eafc;color:#7c3aed}
.chip.cat-fun{background:#e7f9f0;color:#0a9d63}
@keyframes pulse{50%{opacity:.72}}
.badge-type-通知{background:#e8f0fe;color:#2563eb}
.badge-type-公告{background:#fff6e5;color:#b97900}
.badge-type-喜报{background:#fdeaea;color:#d43c3c}
.badge-type{font-size:12px;font-weight:700;padding:3px 12px;border-radius:99px}

/* ============ 表格（响应式：容器横向滚动 + 表头吸附） ============ */
.tbl-box,.tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--radius)}
.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th{position:sticky;top:0;background:#f7f9fd;color:var(--muted);font-size:12.5px;font-weight:600;padding:12px 14px;text-align:left;white-space:nowrap;z-index:2}
.tbl td{padding:12px 14px;border-top:1px solid var(--line);vertical-align:middle}
.tbl tr:hover td{background:#fffaf6}
.tbl .num{font-variant-numeric:tabular-nums}
.tbl tbody tr{animation:rowIn .45s var(--ease) both}
.tbl tbody tr:nth-child(1){animation-delay:.02s}.tbl tbody tr:nth-child(2){animation-delay:.06s}
.tbl tbody tr:nth-child(3){animation-delay:.10s}.tbl tbody tr:nth-child(4){animation-delay:.14s}
.tbl tbody tr:nth-child(5){animation-delay:.18s}.tbl tbody tr:nth-child(6){animation-delay:.22s}
.tbl tbody tr:nth-child(7){animation-delay:.26s}.tbl tbody tr:nth-child(8){animation-delay:.30s}
@keyframes rowIn{from{opacity:0;transform:translateX(-10px)}to{opacity:1;transform:none}}
.rank{display:inline-flex;width:30px;height:30px;border-radius:9px;align-items:center;justify-content:center;font-weight:900;font-size:14px;background:#eef1f6;color:#7b8aa5}
.rank.r1{background:linear-gradient(135deg,#ffd76e,#f0a812);color:#7a5200}
.rank.r2{background:linear-gradient(135deg,#e8edf5,#c3ccd9);color:#4c586c}
.rank.r3{background:linear-gradient(135deg,#f7c9a4,#dd8a4e);color:#6e3a10}
.pts{display:inline-block;background:#fff0e8;color:var(--brand);font-weight:800;border-radius:8px;padding:2px 10px;font-size:13px}

/* ============ 卡片 ============ */
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}
.card h3{font-size:16.5px;margin-bottom:14px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}

/* ============ 折叠面板 ============ */
details{background:var(--card);border-radius:16px;box-shadow:var(--shadow);overflow:hidden;border:1.5px solid transparent;transition:.2s}
details+details{margin-top:12px}
details[open]{border-color:#ffd6c2}
summary{cursor:pointer;list-style:none;padding:17px 22px;font-weight:800;font-size:15px;display:flex;align-items:center;gap:12px}
summary::-webkit-details-marker{display:none}
summary .ni{width:32px;height:32px;flex:none;border-radius:10px;background:#fff0e8;display:flex;align-items:center;justify-content:center;font-size:16px}
summary .arr{margin-left:auto;color:var(--brand);transition:.25s var(--ease);font-size:12px}
details[open] summary .arr{transform:rotate(180deg)}
details .body{padding:0 22px 18px 66px;color:var(--muted);font-size:14px;animation:rowIn .35s var(--ease)}
details .body p{margin-bottom:6px}

/* ============ Toast（读屏可感知） ============ */
#toast{position:fixed;left:50%;bottom:34px;transform:translateX(-50%) translateY(24px);background:#1d2a45;color:#fff;padding:12px 26px;border-radius:99px;font-size:14px;opacity:0;pointer-events:none;transition:.32s var(--ease);z-index:300;box-shadow:0 10px 30px rgba(0,0,0,.3);border:1.5px solid transparent;max-width:min(92vw,560px);text-align:center}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ============ 页脚 ============ */
footer{background:#0b1530;color:rgba(255,255,255,.6);padding:34px 0;margin-top:60px;text-align:center;font-size:13.5px}
footer b{color:#fff}
footer .fl{margin-top:8px;letter-spacing:1px}
footer .modules{margin-top:12px;display:flex;gap:18px;justify-content:center;flex-wrap:wrap}
footer .modules a{color:rgba(255,255,255,.55);transition:color .2s}
footer .modules a:hover{color:var(--brand-2)}
.demo-badge{display:inline-block;background:rgba(255,184,0,.15);color:var(--brand-2);border:1px solid rgba(255,184,0,.35);font-size:12px;padding:2px 12px;border-radius:99px;margin-left:8px;vertical-align:2px}

/* ============ 滚动显现 ============ */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:860px){
  .wrap{padding:0 16px}
  .nav-in{padding:0 16px;gap:12px}
  .nav-links{display:none;position:absolute;top:66px;left:0;right:0;background:#fff;flex-direction:column;padding:12px 18px 18px;box-shadow:0 20px 30px rgba(15,27,51,.12);animation:rowIn .25s var(--ease)}
  .nav-links.open{display:flex}
  .nav-links a{padding:13px;border-radius:12px}
  .nav-links a::after{display:none}
  .nav-cta{display:none}
  .burger{display:block}
  .page-hero .wrap{flex-direction:column;align-items:flex-start}
  .sec{padding:44px 0}
  details .body{padding-left:22px}
}
@media (max-width:480px){
  .tbl{min-width:620px}
  .sec-head p{font-size:13.5px}
}
/* ---------- 手机端易读性 ---------- */
@media (max-width:640px){
  body{font-size:15px}
  .chip{font-size:12.5px;padding:4px 11px}
  .demo-banner{font-size:12.5px}
  .tbl td{font-size:14px}
  .card h3{font-size:15.5px}
  .page-hero .sub{font-size:13.5px}
}