/* ==========================================================
   边疆资源安全卫士 · 主样式
   风格：Stripe-like（柔和渐变 + 大留白 + 轻阴影）+ 边疆色彩
   ========================================================== */
:root{
  --brand:#635bff;
  --brand-2:#0ea5e9;
  --green:#10b981;
  --amber:#f59e0b;
  --red:#e11d48;
  --ink:#0f172a;
  --ink-2:#334155;
  --muted:#64748b;
  --line:#e6e9f0;
  --bg:#f7f9fc;
  --card:#ffffff;
  --radius:16px;
  --shadow:0 1px 2px rgba(16,24,40,.04), 0 8px 24px rgba(16,24,40,.06);
  --shadow-lg:0 12px 40px rgba(16,24,40,.12);
  --grad:linear-gradient(135deg,#635bff 0%,#0ea5e9 100%);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  background:var(--bg); color:var(--ink); line-height:1.7; -webkit-font-smoothing:antialiased;
  font-size:15px;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4{margin:0 0 .5em;line-height:1.3;letter-spacing:-.01em}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em 1.2em;padding:0}
.muted{color:var(--muted);font-size:13px}
.center{text-align:center}

/* ---------- 顶部导航 ---------- */
.nav{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.85);
  backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-inner{max-width:1220px;margin:0 auto;padding:10px 18px;display:flex;align-items:center;gap:14px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-size:22px;
  background:var(--grad);box-shadow:0 6px 18px rgba(99,91,255,.35);
}
.brand-txt{display:flex;flex-direction:column;line-height:1.15}
.brand-txt b{font-size:16px;letter-spacing:.5px}
.brand-txt i{font-style:normal;font-size:11.5px;color:var(--muted)}
.nav-links{margin-left:auto;display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.nav-links a{
  padding:7px 11px;border-radius:10px;font-size:14px;color:var(--ink-2);font-weight:500;white-space:nowrap;
  transition:.18s;
}
.nav-links a:hover{background:#f1f4f9;color:var(--ink)}
.nav-links a.on{background:rgba(99,91,255,.10);color:var(--brand)}
.me-chip{
  display:flex;align-items:center;gap:6px;background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:4px 12px 4px 6px;box-shadow:var(--shadow);
}
.me-chip span{font-size:18px}
.me-chip b{font-size:13px;max-width:90px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.me-chip em{font-style:normal;font-size:12px;font-weight:700;color:var(--amber);background:#fff7ed;padding:2px 7px;border-radius:999px}
.nav-toggle{display:none;margin-left:auto;background:#fff;border:1px solid var(--line);border-radius:10px;padding:6px 12px;font-size:18px;cursor:pointer}

/* ---------- 页面容器 ---------- */
.page{max-width:1220px;margin:0 auto;padding:22px 18px 60px;min-height:60vh}
.crumb{font-size:13px;color:var(--muted);margin-bottom:14px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;border-radius:24px;padding:38px 34px;color:#fff;margin-bottom:26px;
  background:
    radial-gradient(1000px 400px at 10% -10%, rgba(255,255,255,.28), transparent 60%),
    radial-gradient(800px 400px at 90% 110%, rgba(16,185,129,.35), transparent 60%),
    linear-gradient(135deg,#4f46e5 0%, #0ea5e9 55%, #06b6d4 100%);
  box-shadow:var(--shadow-lg);
}
.hero:after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.28;
  background-image:radial-gradient(circle at 20% 90%, rgba(255,255,255,.6) 1px, transparent 1px),
                   radial-gradient(circle at 70% 30%, rgba(255,255,255,.5) 1px, transparent 1px);
  background-size:60px 60px, 90px 90px;
}
.hero h1{font-size:34px;margin:0 0 10px;position:relative;z-index:2;text-shadow:0 2px 12px rgba(0,0,0,.18)}
.hero p{font-size:15.5px;opacity:.95;max-width:620px;margin:0 0 20px;position:relative;z-index:2}
.hero-btns{display:flex;gap:10px;flex-wrap:wrap;position:relative;z-index:2}
.hero-stats{display:flex;gap:26px;margin-top:24px;position:relative;z-index:2;flex-wrap:wrap}
.hero-stats div b{display:block;font-size:26px;font-weight:800;letter-spacing:-.5px}
.hero-stats div span{font-size:12.5px;opacity:.9}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:7px;justify-content:center;
  padding:10px 18px;border-radius:12px;border:1px solid transparent;font-size:14px;font-weight:600;cursor:pointer;
  background:var(--brand);color:#fff;transition:.18s;box-shadow:0 4px 14px rgba(99,91,255,.28);
}
.btn:hover{transform:translateY(-1px);filter:brightness(1.05)}
.btn.ghost{background:#fff;color:var(--ink);border-color:var(--line);box-shadow:none}
.btn.ghost:hover{background:#f8fafc;border-color:#cbd5e1}
.btn.line{background:transparent;color:var(--brand);border-color:rgba(99,91,255,.35);box-shadow:none}
.btn.sm{padding:6px 12px;font-size:13px;border-radius:9px}
.btn.block{width:100%}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* ---------- 区块标题 ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;margin:30px 0 14px}
.sec-head h2{font-size:21px;margin:0}
.sec-head p{margin:0;color:var(--muted);font-size:13.5px}
.sec-head .more{font-size:13px;color:var(--brand);font-weight:600}

/* ---------- 栅格 ---------- */
.grid{display:grid;gap:16px}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g5{grid-template-columns:repeat(5,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}

/* ---------- 卡片 ---------- */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;
  box-shadow:var(--shadow);transition:.2s;position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.card .ico{font-size:26px;margin-bottom:8px}
.card h3{font-size:16.5px;margin:0 0 6px}
.card p{font-size:13.5px;color:var(--muted);margin:0 0 12px}

/* 展馆卡 */
.pav-card{padding:0;display:flex;flex-direction:column}
.pav-top{padding:18px 18px 14px;color:#fff;position:relative}
.pav-top .ico{font-size:32px;margin-bottom:6px}
.pav-top h3{margin:0 0 4px;font-size:18px;color:#fff}
.pav-top p{margin:0;font-size:12.8px;color:rgba(255,255,255,.92);min-height:38px}
.pav-body{padding:14px 18px 18px}
.pav-bar{height:6px;border-radius:99px;background:#eef2f7;overflow:hidden;margin:8px 0 10px}
.pav-bar i{display:block;height:100%;border-radius:99px;background:var(--grad)}
.pav-meta{display:flex;justify-content:space-between;font-size:12.5px;color:var(--muted)}

/* 知识卡列表项 */
.klist{display:grid;gap:10px;margin-top:8px}
.kitem{
  display:flex;gap:12px;align-items:center;padding:12px 14px;border:1px solid var(--line);
  border-radius:12px;background:#fff;transition:.16s
}
.kitem:hover{border-color:rgba(99,91,255,.4);background:#fcfcff;transform:translateX(2px)}
.kitem .no{
  width:30px;height:30px;border-radius:9px;display:grid;place-items:center;font-size:13px;font-weight:700;
  background:#f1f5f9;color:var(--muted);flex:0 0 auto
}
.kitem.done .no{background:#dcfce7;color:#15803d}
.kitem .t{flex:1;min-width:0}
.kitem .t b{display:block;font-size:14.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.kitem .t span{font-size:12.5px;color:var(--muted);display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.kitem .st{font-size:12px;color:var(--green);font-weight:700;white-space:nowrap}
.kitem .st.todo{color:var(--muted)}

/* ---------- 徽章/标签 ---------- */
.tag{display:inline-block;font-size:12px;padding:2px 9px;border-radius:999px;background:#f1f5f9;color:var(--muted);font-weight:600}
.tag.g{background:#dcfce7;color:#15803d}
.tag.b{background:#dbeafe;color:#1d4ed8}
.tag.a{background:#fef3c7;color:#b45309}
.tag.r{background:#fee2e2;color:#b91c1c}
.pill{display:inline-flex;align-items:center;gap:5px;font-size:12.5px;padding:4px 10px;border-radius:999px;background:#fff;border:1px solid var(--line)}

/* ---------- 表单 ---------- */
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--ink-2)}
.input,select,textarea{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:11px;font-size:14px;
  font-family:inherit;background:#fff;color:var(--ink);transition:.15s
}
.input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(99,91,255,.14)}
textarea{min-height:120px;resize:vertical}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}

/* ---------- 测验 ---------- */
.quiz-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.q-title{font-size:16px;font-weight:700;margin-bottom:12px}
.opt{
  display:flex;gap:10px;align-items:flex-start;padding:11px 13px;border:1px solid var(--line);border-radius:12px;
  margin-bottom:9px;cursor:pointer;transition:.15s;background:#fff;font-size:14px
}
.opt:hover{border-color:rgba(99,91,255,.45);background:#fafaff}
.opt.pick{border-color:var(--brand);background:rgba(99,91,255,.06)}
.opt.right{border-color:#16a34a;background:#f0fdf4}
.opt.wrong{border-color:#dc2626;background:#fef2f2}
.opt .key{
  width:24px;height:24px;border-radius:8px;background:#f1f5f9;display:grid;place-items:center;
  font-size:12.5px;font-weight:700;flex:0 0 auto;color:var(--muted)
}
.opt.right .key{background:#16a34a;color:#fff}
.opt.wrong .key{background:#dc2626;color:#fff}
.explain{margin-top:12px;padding:12px 14px;border-radius:12px;background:#f8fafc;border-left:3px solid var(--brand);font-size:13.5px}

/* ---------- 进度条 ---------- */
.bar{height:8px;border-radius:99px;background:#eef2f7;overflow:hidden}
.bar i{display:block;height:100%;border-radius:99px;background:var(--grad);transition:width .5s}

/* ---------- 视频区 ---------- */
.video-wrap{
  position:relative;border-radius:16px;overflow:hidden;background:#0f172a;aspect-ratio:16/9;
  display:grid;place-items:center;box-shadow:var(--shadow)
}
.video-wrap video,.video-wrap iframe{width:100%;height:100%;object-fit:contain;background:#000}
.vgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px}
.vcard{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.18s}
.vcard:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.vthumb{aspect-ratio:16/9;background:linear-gradient(135deg,#e2e8f0,#f1f5f9);display:grid;place-items:center;font-size:34px;position:relative}
.vthumb .play{position:absolute;width:46px;height:46px;border-radius:50%;background:rgba(15,23,42,.55);color:#fff;display:grid;place-items:center;font-size:18px}
.vbody{padding:12px 14px}
.vbody b{font-size:14px;display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.vbody span{font-size:12px;color:var(--muted)}

/* ---------- 闯关地图 ---------- */
.stage-path{display:flex;gap:10px;overflow-x:auto;padding:6px 2px 14px}
.stage{
  flex:0 0 auto;min-width:150px;border-radius:14px;padding:14px;border:1px solid var(--line);background:#fff;
  position:relative;transition:.18s;cursor:pointer
}
.stage:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.stage.locked{opacity:.55;filter:grayscale(.5)}
.stage.done{border-color:#16a34a}
.stage .lv{font-size:11.5px;font-weight:700;color:var(--muted)}
.stage .nm{font-size:15px;font-weight:700;margin:4px 0}
.stage .sc{font-size:12px;color:var(--green);font-weight:600}
.stage .em{font-size:26px}

/* ---------- 找茬场景 ---------- */
.hz-wrap{position:relative;border-radius:16px;overflow:hidden;border:1px solid var(--line);background:#fff}
.hz-wrap svg{display:block;width:100%;height:auto}
.hz-spot{
  position:absolute;width:34px;height:34px;margin:-17px 0 0 -17px;border-radius:50%;
  border:2px dashed rgba(255,255,255,.9);background:rgba(225,29,72,.35);cursor:pointer;
  display:grid;place-items:center;color:#fff;font-weight:800;font-size:14px;transition:.2s
}
.hz-spot:hover{transform:scale(1.15)}
.hz-spot.found{background:rgba(16,185,129,.85);border-color:#fff;animation:pop .4s}
.hz-spot.found:after{content:"✓"}
.hz-spot:not(.found):after{content:"?"}
@keyframes pop{0%{transform:scale(.3);opacity:0}60%{transform:scale(1.2)}100%{transform:scale(1)}}
.hz-tip{
  position:absolute;z-index:5;background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 14px;
  max-width:280px;box-shadow:var(--shadow-lg);font-size:13px;display:none
}
.hz-tip b{display:block;margin-bottom:4px;font-size:14px}

/* ---------- 模拟器 ---------- */
.sim-hud{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:16px}
.hud{background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 14px}
.hud .lb{font-size:12px;color:var(--muted);display:flex;justify-content:space-between}
.hud .vl{font-size:20px;font-weight:800;letter-spacing:-.5px}
.meter{height:7px;border-radius:99px;background:#eef2f7;overflow:hidden;margin-top:7px}
.meter i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,#16a34a,#84cc16);transition:width .5s}
.meter.warn i{background:linear-gradient(90deg,#f59e0b,#f97316)}
.meter.danger i{background:linear-gradient(90deg,#e11d48,#f43f5e)}
.sim-log{background:#0f172a;color:#cbd5e1;border-radius:14px;padding:14px;height:180px;overflow-y:auto;font-size:13px;font-family:ui-monospace,Menlo,Consolas,monospace}
.sim-log .u{color:#7dd3fc}
.sim-log .ok{color:#4ade80}
.sim-log .bad{color:#fb7185}

/* ---------- 演练步骤 ---------- */
.steps{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}
.step-dot{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--line);background:#fff;font-size:13px;font-weight:700;color:var(--muted)}
.step-dot.on{background:var(--brand);color:#fff;border-color:var(--brand)}
.step-dot.ok{background:#dcfce7;color:#15803d;border-color:#a7f3d0}

/* ---------- 排行表 ---------- */
.table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;font-size:14px}
.table th,.table td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line)}
.table th{background:#f8fafc;font-size:12.5px;color:var(--muted);font-weight:700}
.table tr:last-child td{border-bottom:none}
.table tbody tr:hover{background:#fafbff}
.rk{width:26px;height:26px;border-radius:8px;display:grid;place-items:center;background:#f1f5f9;font-size:12.5px;font-weight:800;color:var(--muted)}
.rk.g1{background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#fff}
.rk.g2{background:linear-gradient(135deg,#cbd5e1,#94a3b8);color:#fff}
.rk.g3{background:linear-gradient(135deg,#d8b4a0,#b48363);color:#fff}

/* ---------- 勋章 ---------- */
.badges{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:12px}
.badge{
  text-align:center;padding:16px 10px;border-radius:14px;border:1px solid var(--line);background:#fff;transition:.18s
}
.badge.got{background:linear-gradient(160deg,#fff,#f5f3ff);border-color:rgba(99,91,255,.35);box-shadow:0 6px 18px rgba(99,91,255,.12)}
.badge.lock{opacity:.5;filter:grayscale(.85)}
.badge .em{font-size:30px}
.badge b{display:block;font-size:13px;margin-top:4px}
.badge span{font-size:11.5px;color:var(--muted);display:block;line-height:1.45}

/* ---------- 故事 / 作品 ---------- */
.story-card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden;display:flex;flex-direction:column}
.story-card .hd{padding:16px 18px 10px;background:linear-gradient(135deg,#f8fafc,#eef2ff)}
.story-card .hd em{font-style:normal;font-size:12px;color:var(--brand);font-weight:700}
.story-card .hd h3{margin:4px 0 0;font-size:16.5px}
.story-card .bd{padding:14px 18px;font-size:13.8px;color:var(--ink-2);flex:1}
.story-card .ft{padding:12px 18px;border-top:1px solid var(--line);display:flex;justify-content:space-between;font-size:12.5px;color:var(--muted)}
.quote{border-left:3px solid var(--brand);padding:2px 0 2px 14px;color:var(--ink-2);font-style:italic;margin:10px 0}

/* ---------- 空状态 ---------- */
.empty{text-align:center;padding:46px 20px;color:var(--muted);background:#fff;border:1px dashed var(--line);border-radius:var(--radius)}
.empty .em{font-size:40px;margin-bottom:8px}

/* ---------- Toast ---------- */
#toast{position:fixed;left:50%;bottom:40px;transform:translateX(-50%);z-index:999;display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none}
.toast{
  background:#0f172a;color:#fff;padding:10px 18px;border-radius:999px;font-size:13.5px;box-shadow:var(--shadow-lg);
  animation:tin .3s
}
@keyframes tin{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* ---------- 后台 ---------- */
.admin-wrap{display:grid;grid-template-columns:220px 1fr;gap:18px}
.admin-side{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:12px;height:fit-content;position:sticky;top:74px}
.admin-side a{display:block;padding:9px 12px;border-radius:10px;font-size:14px;color:var(--ink-2)}
.admin-side a:hover{background:#f1f5f9}
.admin-side a.on{background:rgba(99,91,255,.1);color:var(--brand);font-weight:700}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin-bottom:18px}
.stat{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px}
.stat b{display:block;font-size:24px;font-weight:800;letter-spacing:-.5px}
.stat span{font-size:12.5px;color:var(--muted)}
.drop{
  border:2px dashed #cbd5e1;border-radius:16px;padding:26px;text-align:center;background:#fbfcfe;cursor:pointer;transition:.18s
}
.drop:hover,.drop.over{border-color:var(--brand);background:rgba(99,91,255,.05)}
.drop .em{font-size:36px}

/* ---------- 响应式 ---------- */
@media (max-width:1000px){
  .g5,.g4,.g3{grid-template-columns:repeat(2,1fr)}
  .admin-wrap{grid-template-columns:1fr}
  .admin-side{position:static;display:flex;gap:6px;overflow-x:auto}
  .admin-side a{white-space:nowrap}
}
@media (max-width:640px){
  body{font-size:14.5px}
  .nav-inner{padding:8px 12px;flex-wrap:wrap}
  .nav-toggle{display:block;order:3}
  .nav-links{
    display:none;width:100%;order:4;flex-direction:column;align-items:stretch;gap:2px;
    background:#fff;border:1px solid var(--line);border-radius:14px;padding:8px;margin-top:8px;box-shadow:var(--shadow)
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:9px 12px;justify-content:flex-start}
  .me-chip{justify-content:flex-start}
  .hero{padding:26px 20px;border-radius:18px}
  .hero h1{font-size:25px}
  .hero-stats{gap:16px}
  .hero-stats div b{font-size:21px}
  .g5,.g4,.g3,.g2{grid-template-columns:1fr}
  .sim-hud{grid-template-columns:repeat(2,1fr)}
  .form-row{grid-template-columns:1fr}
  .page{padding:16px 12px 50px}
  .table{font-size:13px}
  .table th,.table td{padding:9px 10px}
}