/* =====================================================================
   格物实验室 —— 全局样式（Light Theme）
   ===================================================================== */

:root{
  --bg:#f4f6fb;
  --bg-2:#eef1f8;
  --card:#ffffff;
  --ink:#0f172a;
  --ink-2:#475569;
  --ink-3:#8b95a7;
  --line:#e5e8f0;
  --line-2:#eef0f6;
  --primary:#4f46e5;
  --primary-d:#4338ca;
  --primary-l:#eef2ff;
  --accent:#0891b2;
  --ok:#059669;
  --ok-l:#ecfdf5;
  --warn:#d97706;
  --warn-l:#fffbeb;
  --err:#dc2626;
  --err-l:#fef2f2;
  --radius:14px;
  --radius-sm:9px;
  --shadow:0 1px 2px rgba(16,24,40,.04), 0 8px 24px -12px rgba(16,24,40,.12);
  --shadow-h:0 4px 8px rgba(16,24,40,.06), 0 18px 36px -16px rgba(16,24,40,.18);
  --wrap:1180px;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font:15px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0}
.ic{flex:0 0 auto;vertical-align:-3px}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}

/* ---------------- 顶栏 ---------------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.88);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line);
}
.hd-inner{display:flex;align-items:center;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;color:#fff;
  background:linear-gradient(135deg,#4f46e5,#06b6d4);box-shadow:0 6px 16px -6px rgba(79,70,229,.6)
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:16px;letter-spacing:.2px}
.brand-text i{font-style:normal;font-size:11px;color:var(--ink-3)}
.hd-search{
  flex:1 1 auto;max-width:340px;display:flex;align-items:center;gap:8px;
  background:var(--bg-2);border:1px solid transparent;border-radius:10px;padding:7px 12px;color:var(--ink-3)
}
.hd-search:focus-within{background:#fff;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-l)}
.hd-search input{flex:1;border:0;background:transparent;outline:none;font-size:13.5px;color:var(--ink)}
.hd-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.hd-link{display:flex;align-items:center;gap:6px;padding:8px 11px;border-radius:9px;font-size:14px;color:var(--ink-2);white-space:nowrap}
.hd-link:hover{background:var(--bg-2);color:var(--ink)}
.hd-link.on{background:var(--primary-l);color:var(--primary-d);font-weight:600}
.hd-user{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.hd-burger{display:none;background:none;border:0;color:var(--ink-2);padding:6px}
.mobile-nav{display:none;flex-wrap:wrap;gap:6px;padding:10px 20px;border-top:1px solid var(--line);background:#fff}
.mobile-nav a{display:flex;align-items:center;gap:6px;font-size:13.5px;color:var(--ink-2);padding:7px 10px;border-radius:8px;background:var(--bg-2)}
.mobile-nav a.on{background:var(--primary-l);color:var(--primary-d);font-weight:600}
.mobile-nav.open{display:flex}
@media(max-width:1080px){.hd-search{display:none}}
@media(max-width:920px){.hd-nav{display:none}.hd-burger{display:block}}

/* 用户菜单 */
.user-menu{position:relative}
.user-btn{display:flex;align-items:center;gap:8px;background:var(--bg-2);border:1px solid var(--line);border-radius:999px;padding:4px 12px 4px 4px}
.user-btn:hover{border-color:#cfd6e4}
.avatar{
  width:30px;height:30px;border-radius:50%;display:grid;place-items:center;color:#fff;font-size:13px;font-weight:700;
  background:linear-gradient(135deg,#6366f1,#22d3ee)
}
.user-name{font-size:13.5px;font-weight:600}
.menu-pop{
  position:absolute;right:0;top:calc(100% + 8px);min-width:180px;background:#fff;border:1px solid var(--line);
  border-radius:12px;box-shadow:var(--shadow-h);padding:6px;display:none;z-index:70
}
.menu-pop.open{display:block}
.menu-pop a{display:flex;align-items:center;gap:9px;padding:9px 11px;border-radius:8px;font-size:13.5px;color:var(--ink-2)}
.menu-pop a:hover{background:var(--bg-2);color:var(--ink)}
.menu-pop a.danger{color:var(--err)}
.menu-pop a.danger:hover{background:var(--err-l)}

/* ---------------- 按钮 ---------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  padding:9px 17px;border-radius:10px;border:1px solid transparent;font-size:14px;font-weight:600;
  transition:.16s;white-space:nowrap;cursor:pointer;background:var(--bg-2);color:var(--ink-2)
}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:linear-gradient(135deg,#4f46e5,#6366f1);color:#fff;box-shadow:0 8px 20px -10px rgba(79,70,229,.85)}
.btn-primary:hover{filter:brightness(1.06)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink-2)}
.btn-ghost:hover{border-color:#cfd6e4;color:var(--ink)}
.btn-soft{background:var(--primary-l);color:var(--primary-d)}
.btn-ok{background:var(--ok);color:#fff}
.btn-danger{background:var(--err-l);color:var(--err)}
.btn-sm{padding:6px 12px;font-size:13px;border-radius:9px}
.btn-lg{padding:12px 24px;font-size:15px;border-radius:12px}
.btn-block{width:100%}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}

/* ---------------- 提示条 ---------------- */
.flash{margin:16px 0 0;padding:12px 16px;border-radius:11px;font-size:14px;border:1px solid}
.flash-ok{background:var(--ok-l);border-color:#a7f3d0;color:#065f46}
.flash-warn{background:var(--warn-l);border-color:#fde68a;color:#92400e}
.flash-error{background:var(--err-l);border-color:#fecaca;color:#991b1b}

/* ---------------- 主区 ---------------- */
.site-main{min-height:60vh;padding-bottom:56px}
.sec{margin-top:44px}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:18px;flex-wrap:wrap}
.sec-title{font-size:21px;display:flex;align-items:center;gap:9px}
.sec-title .bar{width:4px;height:20px;border-radius:3px;background:linear-gradient(180deg,#4f46e5,#06b6d4)}
.sec-sub{font-size:13.5px;color:var(--ink-3);margin-top:3px}
.sec-more{font-size:13.5px;color:var(--primary);font-weight:600;display:flex;align-items:center;gap:4px}
.sec-more:hover{text-decoration:underline}

/* ---------------- 首页 Hero ---------------- */
.hero{
  margin-top:26px;border-radius:22px;padding:46px 44px;position:relative;overflow:hidden;
  background:linear-gradient(120deg,#312e81 0%,#4f46e5 46%,#0891b2 100%);color:#fff;
  box-shadow:0 24px 60px -26px rgba(49,46,129,.7)
}
.hero::after{
  content:"";position:absolute;right:-90px;top:-90px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(255,255,255,.28),transparent 62%)
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:22px 22px;opacity:.6
}
.hero-in{position:relative;z-index:2;max-width:660px}
.hero-badge{
  display:inline-flex;align-items:center;gap:7px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);
  padding:5px 13px;border-radius:999px;font-size:12.5px;margin-bottom:16px
}
.hero h1{font-size:35px;letter-spacing:-.5px;line-height:1.28}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,#fde68a,#a7f3d0);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{margin-top:14px;font-size:15px;color:rgba(255,255,255,.86);line-height:1.8}
.hero-acts{display:flex;gap:12px;margin-top:26px;flex-wrap:wrap}
.hero-acts .btn-ghost{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.34);color:#fff}
.hero-acts .btn-ghost:hover{background:rgba(255,255,255,.22)}
.hero-acts .btn-white{background:#fff;color:#4338ca}
.hero-stats{display:flex;gap:34px;margin-top:30px;flex-wrap:wrap;position:relative;z-index:2}
.hero-stats div b{display:block;font-size:26px;letter-spacing:-.5px}
.hero-stats div span{font-size:12.5px;color:rgba(255,255,255,.72)}
@media(max-width:640px){.hero{padding:34px 24px}.hero h1{font-size:26px}.hero-stats{gap:22px}}

/* ---------------- 学段学科入口 ---------------- */
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:820px){.entry-grid{grid-template-columns:1fr}}
.entry{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  box-shadow:var(--shadow);position:relative;overflow:hidden;transition:.18s
}
.entry:hover{transform:translateY(-3px);box-shadow:var(--shadow-h);border-color:#d9deea}
.entry-top{display:flex;align-items:center;gap:12px}
.entry-ico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;color:#fff;font-weight:800;font-size:15px}
.entry h3{font-size:17px}
.entry .entry-sub{font-size:12.5px;color:var(--ink-3)}
.entry-list{margin-top:16px;display:flex;flex-direction:column;gap:7px}
.entry-list a{display:flex;align-items:center;justify-content:space-between;font-size:13.5px;color:var(--ink-2);padding:6px 9px;border-radius:8px;background:var(--bg-2)}
.entry-list a:hover{background:var(--primary-l);color:var(--primary-d)}
.entry-list a span{color:var(--ink-3);font-size:12px}

/* ---------------- 实验卡片 ---------------- */
.grid-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media(max-width:1080px){.grid-cards{grid-template-columns:repeat(3,1fr)}}
@media(max-width:820px){.grid-cards{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.grid-cards{grid-template-columns:1fr}}

.exp-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;box-shadow:var(--shadow);transition:.18s
}
.exp-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h);border-color:#d9deea}
.ec-cover{height:126px;position:relative;display:grid;place-items:center;overflow:hidden}
.ec-cover img{width:100%;height:100%;object-fit:cover}
.ec-glyph{font-size:34px;font-weight:800;color:rgba(255,255,255,.92);letter-spacing:3px;text-shadow:0 4px 14px rgba(0,0,0,.16)}
.ec-stage{
  position:absolute;left:10px;top:10px;background:rgba(255,255,255,.94);color:var(--c,#475569);
  font-size:11.5px;font-weight:700;padding:3px 9px;border-radius:999px
}
.ec-sim{
  position:absolute;right:10px;bottom:10px;display:flex;align-items:center;gap:4px;
  background:rgba(15,23,42,.62);color:#fff;font-size:11px;padding:3px 9px;border-radius:999px;backdrop-filter:blur(3px)
}
.ec-body{padding:14px 15px 15px;display:flex;flex-direction:column;flex:1}
.ec-tags{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:9px}
.tag{font-size:11.5px;color:var(--ink-3);background:var(--bg-2);padding:2px 8px;border-radius:6px;white-space:nowrap}
.tag-subject{background:color-mix(in srgb,var(--c) 12%,#fff);color:var(--c);font-weight:600}
.ec-title{font-size:15.5px;line-height:1.45;min-height:44px}
.ec-card:hover .ec-title{color:var(--primary)}
.ec-sum{font-size:13px;color:var(--ink-3);margin-top:7px;flex:1;line-height:1.62}
.ec-meta{display:flex;gap:14px;margin-top:11px;padding-top:11px;border-top:1px dashed var(--line);font-size:12.5px;color:var(--ink-3)}
.ec-meta span{display:flex;align-items:center;gap:4px}

/* ---------------- 筛选 ---------------- */
.filters{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 20px;
  box-shadow:var(--shadow);margin-top:20px
}
.filter-row{display:flex;align-items:center;gap:14px;padding:7px 0}
.filter-row + .filter-row{border-top:1px dashed var(--line-2)}
.filter-label{flex:0 0 40px;font-size:13px;color:var(--ink-3);font-weight:600}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  font-size:13px;padding:5px 13px;border-radius:999px;background:var(--bg-2);color:var(--ink-2);border:1px solid transparent;transition:.15s
}
.chip:hover{background:#e7ebf5}
.chip.on{background:color-mix(in srgb,var(--c,#4f46e5) 13%,#fff);color:var(--c,#4f46e5);border-color:color-mix(in srgb,var(--c,#4f46e5) 32%,#fff);font-weight:600}
.filter-active{margin-top:6px;font-size:13px;color:var(--ink-3);display:flex;align-items:center;gap:10px}
.filter-active a{color:var(--primary);font-weight:600}

/* ---------------- 分页 ---------------- */
.pager{display:flex;align-items:center;gap:7px;justify-content:center;margin:34px 0 0;flex-wrap:wrap}
.pg{min-width:36px;height:36px;padding:0 12px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:9px;background:#fff;border:1px solid var(--line);font-size:13.5px;color:var(--ink-2)}
.pg:hover{border-color:#cfd6e4;color:var(--ink)}
.pg.current{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:700}
.pg.disabled{opacity:.45;pointer-events:none}
.pg-info{font-size:12.5px;color:var(--ink-3);margin-left:8px}

/* ---------------- 空状态 ---------------- */
.empty{text-align:center;padding:64px 20px;color:var(--ink-3);background:var(--card);border:1px dashed var(--line);border-radius:var(--radius)}
.empty-t{margin-top:12px;font-size:15px;color:var(--ink-2);font-weight:600}
.empty-h{margin-top:5px;font-size:13px}

/* ---------------- 实验详情 ---------------- */
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-top:20px;flex-wrap:wrap}
.crumb a:hover{color:var(--primary)}
.crumb i{font-style:normal;opacity:.5}
.detail-hero{
  margin-top:14px;border-radius:20px;padding:32px 34px;color:#fff;position:relative;overflow:hidden;
  box-shadow:0 20px 50px -26px rgba(30,41,59,.6)
}
.detail-hero::after{content:"";position:absolute;right:-70px;bottom:-110px;width:300px;height:300px;border-radius:50%;background:rgba(255,255,255,.12)}
.dh-in{position:relative;z-index:2;max-width:760px}
.dh-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:13px}
.dh-tags span{background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.3);font-size:12px;padding:3px 11px;border-radius:999px}
.detail-hero h1{font-size:27px;letter-spacing:-.3px}
.detail-hero .dh-sub{margin-top:10px;font-size:14.5px;color:rgba(255,255,255,.88);line-height:1.75}
.dh-meta{display:flex;gap:22px;margin-top:20px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.85)}
.dh-meta span{display:flex;align-items:center;gap:6px}

.detail-layout{display:grid;grid-template-columns:minmax(0,1fr) 316px;gap:26px;margin-top:26px;align-items:start}
@media(max-width:960px){.detail-layout{grid-template-columns:1fr}}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px 24px}
.panel + .panel{margin-top:18px}
.panel-h{display:flex;align-items:center;gap:9px;font-size:16.5px;margin-bottom:14px}
.panel-h .dot{width:8px;height:8px;border-radius:50%;background:var(--primary)}
.panel-h .pico{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:var(--primary-l);color:var(--primary-d)}
.prose{font-size:14.5px;color:#334155;line-height:1.9}
.prose p + p{margin-top:10px}
.prose strong{color:var(--ink)}
.purpose-list{display:flex;flex-direction:column;gap:8px}
.purpose-list li{list-style:none;display:flex;gap:9px;font-size:14px;color:#334155}
.purpose-list li::before{content:"";flex:0 0 auto;width:6px;height:6px;border-radius:50%;background:var(--primary);margin-top:9px}
.apparatus-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:9px}
.app-item{display:flex;align-items:center;gap:8px;background:var(--bg-2);border-radius:9px;padding:9px 12px;font-size:13.5px;color:var(--ink-2)}
.app-item::before{content:"";width:7px;height:7px;border-radius:2px;background:linear-gradient(135deg,#4f46e5,#06b6d4)}

.steps{display:flex;flex-direction:column;gap:0;counter-reset:st}
.step{display:flex;gap:15px;position:relative;padding-bottom:20px}
.step:last-child{padding-bottom:0}
.step::before{content:"";position:absolute;left:15px;top:32px;bottom:0;width:2px;background:var(--line)}
.step:last-child::before{display:none}
.step-n{
  flex:0 0 auto;width:32px;height:32px;border-radius:50%;display:grid;place-items:center;font-size:13.5px;font-weight:700;
  background:var(--primary-l);color:var(--primary-d);border:2px solid #fff;box-shadow:0 0 0 1px var(--line);z-index:2
}
.step-b{flex:1;padding-top:3px}
.step-b h4{font-size:14.5px;margin-bottom:4px}
.step-b p{font-size:13.8px;color:var(--ink-2);line-height:1.75}
.step-tip{margin-top:8px;display:flex;gap:7px;background:var(--warn-l);border:1px solid #fde68a;color:#92400e;
  font-size:12.8px;padding:8px 11px;border-radius:9px;line-height:1.6}
.formula{
  display:inline-block;background:#0f172a;color:#e2e8f0;font-family:Consolas,Monaco,monospace;
  font-size:14px;padding:9px 16px;border-radius:10px;margin-top:4px;letter-spacing:.4px
}
.callout{border-radius:11px;padding:14px 16px;font-size:14px;line-height:1.8;border:1px solid}
.callout-ok{background:var(--ok-l);border-color:#a7f3d0;color:#065f46}
.callout-warn{background:var(--warn-l);border-color:#fde68a;color:#92400e}
.callout-info{background:#eff6ff;border-color:#bfdbfe;color:#1e40af}
.callout b{display:block;margin-bottom:5px;font-size:14px}

/* 侧栏 */
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px 20px}
.side-card + .side-card{margin-top:16px}
.side-h{font-size:14.5px;font-weight:700;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.side-acts{display:flex;flex-direction:column;gap:9px}
.kv{display:flex;justify-content:space-between;padding:8px 0;font-size:13.5px;border-bottom:1px dashed var(--line-2)}
.kv:last-child{border-bottom:0}
.kv span:first-child{color:var(--ink-3)}
.kv span:last-child{font-weight:600;color:var(--ink)}
.rel-list{display:flex;flex-direction:column;gap:10px}
.rel-item{display:flex;gap:11px;align-items:flex-start;padding:8px;border-radius:9px}
.rel-item:hover{background:var(--bg-2)}
.rel-ico{flex:0 0 auto;width:38px;height:38px;border-radius:10px;display:grid;place-items:center;color:#fff;font-size:12px;font-weight:700}
.rel-t{font-size:13.5px;font-weight:600;line-height:1.45}
.rel-s{font-size:12px;color:var(--ink-3);margin-top:3px}

/* ---------------- 通用页面头 ---------------- */
.page-head{margin-top:26px}
.page-head h1{font-size:25px;letter-spacing:-.3px}
.page-head p{margin-top:8px;font-size:14px;color:var(--ink-3);max-width:720px;line-height:1.75}

/* ---------------- 虚拟实验室 ---------------- */
.lab-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:22px;margin-top:24px;align-items:start}
@media(max-width:1000px){.lab-layout{grid-template-columns:1fr}}
.sim-stage{
  background:#0f172a;border-radius:var(--radius);overflow:hidden;border:1px solid #1e293b
}
.sim-stage canvas{display:block;width:100%;height:auto;background:#0b1220}
.sim-toolbar{display:flex;align-items:center;gap:12px;padding:12px 16px;background:#111c33;border-top:1px solid #1e293b;flex-wrap:wrap}
.sim-toolbar .st-read{font-size:13px;color:#94a3b8;font-family:Consolas,Monaco,monospace}
.sim-toolbar .st-read b{color:#67e8f9;font-weight:700}
.sim-ctrl{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.sim-ctrl h3{font-size:15.5px;margin-bottom:4px}
.sim-ctrl .sc-desc{font-size:13px;color:var(--ink-3);line-height:1.7;margin-bottom:16px}
.ctrl{display:flex;flex-direction:column;gap:6px;margin-bottom:15px}
.ctrl label{display:flex;justify-content:space-between;font-size:13px;color:var(--ink-2);font-weight:600}
.ctrl label b{color:var(--primary);font-family:Consolas,monospace}
.ctrl label i.ctrl-note{font-style:normal;font-weight:500;font-size:11.5px;color:var(--ink-3);margin-left:2px}
.ctrl input[type=range]{-webkit-appearance:none;width:100%;height:5px;border-radius:4px;background:var(--line);outline:none}
.ctrl input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:17px;height:17px;border-radius:50%;
  background:#fff;border:3px solid var(--primary);box-shadow:0 1px 4px rgba(0,0,0,.2);cursor:pointer}
.ctrl select,.ctrl input[type=text],.ctrl input[type=number]{
  border:1px solid var(--line);border-radius:9px;padding:8px 11px;font-size:13.5px;outline:none;background:#fff;color:var(--ink)
}
.ctrl select:focus,.ctrl input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-l)}
.ctrl-row{display:flex;align-items:center;gap:10px;margin-top:2px}
.ctrl-row input[type=range]{flex:1;width:auto}
.ctrl input.ctrl-num{width:78px;flex:0 0 78px;text-align:center;padding:7px 6px}
.readouts{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:4px}
.readout{background:var(--bg-2);border-radius:10px;padding:10px 12px}
.readout span{display:block;font-size:11.5px;color:var(--ink-3)}
.readout b{font-size:17px;font-family:Consolas,monospace;color:var(--ink)}
.readout b i{font-style:normal;font-size:11.5px;color:var(--ink-3);margin-left:2px}

.lab-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:860px){.lab-list{grid-template-columns:1fr}}
.lab-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);transition:.18s;display:flex;flex-direction:column}
.lab-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-h)}
.lab-card .lc-ico{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;color:#fff;margin-bottom:12px}
.lab-card h3{font-size:15.5px}
.lab-card p{font-size:13px;color:var(--ink-3);margin-top:7px;flex:1;line-height:1.65}
.lab-card .lc-go{margin-top:13px;font-size:13px;color:var(--primary);font-weight:600;display:flex;align-items:center;gap:5px}
.lab-card .lc-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:13px}
.lab-card .lc-foot .lc-go{margin-top:0}
.lab-card .lc-scene{font-size:11.5px;color:var(--ink-3);background:var(--bg-2);border-radius:999px;padding:3px 9px;white-space:nowrap;
  overflow:hidden;text-overflow:ellipsis;max-width:60%}
.lab-card .ec-tags{display:flex;gap:6px;flex-wrap:wrap}
.lab-card.is-expert{border-color:#fcd34d;box-shadow:0 0 0 3px rgba(251,191,36,.12),var(--shadow)}
.lab-list-feat{grid-template-columns:repeat(3,1fr)}
@media(max-width:1000px){.lab-list-feat{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.lab-list-feat{grid-template-columns:1fr}}

/* 使用说明三格 */
.sim-howto{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:20px}
@media(max-width:860px){.sim-howto{grid-template-columns:1fr}}
.sh-item{display:flex;gap:12px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:15px 16px;box-shadow:var(--shadow)}
.sh-n{flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--primary-l);color:var(--primary-d);
  display:grid;place-items:center;font-weight:800;font-size:13px}
.sh-item b{font-size:14px}
.sh-item p{font-size:12.5px;color:var(--ink-3);line-height:1.7;margin-top:5px}

/* 主题 chip 计数 */
.chip i{font-style:normal;font-size:10.5px;opacity:.62;margin-left:5px;font-family:Consolas,monospace}

/* 仿真搜索条 */
.sim-search{display:flex;align-items:center;gap:9px;flex:1;min-width:260px;flex-wrap:wrap}
.ss-input{position:relative;flex:1;min-width:220px;display:flex;align-items:center;gap:7px;
  border:1px solid var(--line);border-radius:9px;padding:8px 12px;background:#fff;color:var(--ink-3)}
.ss-input:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-l)}
.ss-input input{border:0;outline:none;flex:1;font-size:13.5px;background:transparent;color:var(--ink);font-family:inherit}

/* 详情页工具条扩展 */
.sim-toolbar .tb-sep{width:1px;height:20px;background:#1e293b}
.sim-toolbar .btn-rec{background:rgba(248,113,113,.14);border:1px solid rgba(248,113,113,.45);color:#fca5a5;font-weight:700}
.sim-toolbar .btn-rec:hover{background:rgba(248,113,113,.24)}
.sim-dur{background:#0b1220;border:1px solid #1e293b;color:#cbd5e1;border-radius:8px;padding:5px 9px;font-size:12.5px;
  font-family:Consolas,monospace;outline:none;cursor:pointer}
.sim-dur:disabled{opacity:.45;cursor:not-allowed}
.sim-toolbar .st-dl{font-size:12.5px;color:#86efac;font-family:Consolas,Monaco,monospace;margin-left:auto;max-width:100%}
.sim-hintline{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:10px 16px;background:#0b1220;border-top:1px solid #1e293b;
  font-size:12.5px;color:#94a3b8;line-height:1.6}
.sim-hintline .ic{color:#67e8f9;vertical-align:-2px}
.sim-hintline .sim-tags{margin-left:auto;color:#64748b;font-size:12px}
.sim-formula{font-family:Consolas,Monaco,monospace;background:#eef2ff;color:#3730a3;border:1px solid #c7d2fe;
  border-radius:9px;padding:11px 14px;font-size:13.5px;letter-spacing:.3px}

/* ---------------- 测评 ---------------- */
.quiz-wrap{max-width:820px;margin:24px auto 0}
.q-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;box-shadow:var(--shadow)}
.q-card + .q-card{margin-top:16px}
.q-no{display:inline-flex;align-items:center;gap:7px;font-size:12px;color:var(--primary-d);background:var(--primary-l);
  padding:3px 10px;border-radius:999px;font-weight:700;margin-bottom:11px}
.q-text{font-size:15.5px;font-weight:600;line-height:1.7;margin-bottom:14px}
.opts{display:flex;flex-direction:column;gap:9px}
.opt{display:flex;align-items:flex-start;gap:11px;border:1px solid var(--line);border-radius:11px;padding:11px 14px;
  cursor:pointer;transition:.15s;font-size:14px;color:var(--ink-2);background:#fff}
.opt:hover{border-color:#c7cee0;background:var(--bg-2)}
.opt input{margin:3px 0 0;accent-color:var(--primary);width:16px;height:16px;flex:0 0 auto}
.opt-key{flex:0 0 auto;width:22px;height:22px;border-radius:6px;background:var(--bg-2);display:grid;place-items:center;
  font-size:12px;font-weight:700;color:var(--ink-2)}
.opt.picked{border-color:var(--primary);background:var(--primary-l)}
.opt.picked .opt-key{background:var(--primary);color:#fff}
.opt.right{border-color:#6ee7b7;background:var(--ok-l)}
.opt.right .opt-key{background:var(--ok);color:#fff}
.opt.wrong{border-color:#fca5a5;background:var(--err-l)}
.opt.wrong .opt-key{background:var(--err);color:#fff}
.analysis{margin-top:13px;font-size:13.5px;line-height:1.75;padding:12px 15px;border-radius:10px;background:var(--bg-2);color:var(--ink-2)}
.analysis b{color:var(--ink)}
.quiz-result{background:linear-gradient(135deg,#4f46e5,#0891b2);color:#fff;border-radius:var(--radius);padding:30px;text-align:center;box-shadow:var(--shadow-h)}
.quiz-result .qr-score{font-size:46px;font-weight:800;letter-spacing:-1px}
.quiz-result .qr-score i{font-style:normal;font-size:18px;opacity:.75}
.quiz-result p{margin-top:8px;color:rgba(255,255,255,.88);font-size:14px}

/* ---------------- 表单 ---------------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
@media(max-width:640px){.form-grid{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;font-weight:600;color:var(--ink-2)}
.field label i{font-style:normal;color:var(--err)}
.field input,.field select,.field textarea{
  border:1px solid var(--line);border-radius:10px;padding:10px 13px;font-size:14px;outline:none;background:#fff;
  color:var(--ink);font-family:inherit;transition:.15s
}
.field textarea{resize:vertical;min-height:92px;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-l)}
.field .hint{font-size:12px;color:var(--ink-3)}
.form-acts{display:flex;gap:11px;margin-top:22px;flex-wrap:wrap}

.auth-wrap{max-width:440px;margin:48px auto}
.auth-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:32px;box-shadow:var(--shadow-h)}
.auth-card h1{font-size:22px;text-align:center}
.auth-card .ac-sub{text-align:center;font-size:13.5px;color:var(--ink-3);margin-top:8px;margin-bottom:24px}
.auth-alt{text-align:center;margin-top:18px;font-size:13.5px;color:var(--ink-3)}
.auth-alt a{color:var(--primary);font-weight:600}

/* ---------------- 图形验证码 ---------------- */
.cap-row{display:flex;gap:10px;align-items:stretch}
.cap-row input{flex:1 1 auto;min-width:0}
.cap-img{flex:0 0 auto;width:132px;height:44px;border:1px solid var(--line);border-radius:10px;
  cursor:pointer;background:#f8fafc;user-select:none;display:block;
  transition:border-color .15s,box-shadow .15s}
.cap-img:hover{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-l)}
.cap-img:active{transform:scale(.985)}

/* ---------------- 邮件设置 / 发信反馈 ---------------- */
.mail-state{display:flex;gap:11px;align-items:flex-start;padding:13px 15px;border-radius:12px;
  font-size:13.5px;line-height:1.7;border:1px solid}
.mail-state .ms-ico{flex:0 0 auto;margin-top:2px}
.mail-state.ok{background:#ecfdf5;border-color:#a7f3d0;color:#065f46}
.mail-state.bad{background:#fffbeb;border-color:#fde68a;color:#92400e}
.mail-state.err{background:#fef2f2;border-color:#fecaca;color:#991b1b}
.mail-state b{font-weight:700}
.mail-trace{margin-top:12px;background:#fff7f7;border:1px solid #fecaca;border-radius:10px;padding:11px 13px}
.mail-trace b{display:block;font-size:12.5px;color:#b91c1c;margin-bottom:6px}
.mail-trace pre{margin:0;font-family:Consolas,Menlo,monospace;font-size:11.8px;line-height:1.75;
  color:#7f1d1d;white-space:pre-wrap;word-break:break-all;max-height:190px;overflow:auto}
.prov-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:4px}
.prov-btn{border:1px solid var(--line);background:#fff;border-radius:9px;padding:7px 13px;
  font-size:13px;color:var(--ink-2);cursor:pointer;font-family:inherit;
  transition:border-color .15s,color .15s,box-shadow .15s}
.prov-btn:hover{border-color:var(--primary);color:var(--primary);box-shadow:0 0 0 3px var(--primary-l)}
.prov-btn.on{border-color:var(--primary);color:var(--primary);background:var(--primary-l);font-weight:600}
.prov-note{margin-top:14px;background:#f8fafc;border:1px solid var(--line);border-radius:10px;padding:13px 15px}
.prov-note b{font-size:13px;color:var(--ink)}
.prov-note ol{margin:8px 0 0;padding-left:20px;font-size:13px;line-height:1.9;color:var(--ink-2)}
.prov-note .pn-tip{margin-top:8px;font-size:12.5px;color:var(--warn)}
.role-pick{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.role-pick label{display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:10px;padding:10px 13px;
  font-size:13.5px;cursor:pointer;color:var(--ink-2);font-weight:500}
.role-pick input{accent-color:var(--primary)}
.role-pick label.on{border-color:var(--primary);background:var(--primary-l);color:var(--primary-d);font-weight:600}

/* ---------------- 记录本 ---------------- */
.nb-table{width:100%;border-collapse:collapse;font-size:13.5px}
.nb-table th{background:var(--bg-2);font-size:12.5px;color:var(--ink-2);text-align:left;padding:9px 11px;border:1px solid var(--line);font-weight:600}
.nb-table td{padding:5px;border:1px solid var(--line);vertical-align:top}
.nb-table input,.nb-table textarea{width:100%;border:0;background:transparent;outline:none;font:inherit;color:var(--ink);padding:5px 6px;border-radius:6px}
.nb-table input:focus,.nb-table textarea:focus{background:var(--primary-l)}
.nb-table td.acts{width:52px;text-align:center}
.row-del{background:none;border:0;color:var(--ink-3);padding:6px;border-radius:6px}
.row-del:hover{background:var(--err-l);color:var(--err)}

/* ---------------- 表格 ---------------- */
.tbl{width:100%;border-collapse:separate;border-spacing:0;font-size:13.5px}
.tbl th{background:var(--bg-2);color:var(--ink-2);font-size:12.5px;font-weight:700;text-align:left;padding:11px 13px;border-bottom:1px solid var(--line)}
.tbl td{padding:11px 13px;border-bottom:1px solid var(--line-2);vertical-align:middle}
.tbl tr:hover td{background:#fbfcfe}
.tbl .nowrap{white-space:nowrap}
.badge{display:inline-flex;align-items:center;font-size:11.5px;padding:2px 9px;border-radius:999px;font-weight:600}
.badge-ok{background:var(--ok-l);color:var(--ok)}
.badge-off{background:var(--bg-2);color:var(--ink-3)}
.badge-warn{background:var(--warn-l);color:var(--warn)}
.badge-info{background:var(--primary-l);color:var(--primary-d)}

/* ---------------- 个人中心 ---------------- */
.profile-head{display:flex;align-items:center;gap:20px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);margin-top:22px;flex-wrap:wrap}
.profile-head .ph-av{width:72px;height:72px;border-radius:20px;display:grid;place-items:center;color:#fff;font-size:28px;font-weight:700;
  background:linear-gradient(135deg,#6366f1,#22d3ee)}
.ph-name{font-size:20px}
.ph-sub{font-size:13px;color:var(--ink-3);margin-top:6px;display:flex;gap:14px;flex-wrap:wrap}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:18px}
@media(max-width:760px){.stat-grid{grid-template-columns:repeat(2,1fr)}}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:17px 19px;box-shadow:var(--shadow)}
.stat b{display:block;font-size:24px;letter-spacing:-.5px}
.stat span{font-size:12.5px;color:var(--ink-3)}

/* ---------------- 页脚 ---------------- */
.site-footer{margin-top:64px;background:#fff;border-top:1px solid var(--line);padding:44px 0 26px}
.ft-inner{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px}
@media(max-width:820px){.ft-inner{grid-template-columns:1fr 1fr}}
.ft-brand .brand{margin-bottom:13px}
.ft-desc{font-size:13px;color:var(--ink-3);line-height:1.8;max-width:360px}
.ft-col h4{font-size:13.5px;margin-bottom:13px;color:var(--ink)}
.ft-col a{display:block;font-size:13.2px;color:var(--ink-3);padding:4px 0}
.ft-col a:hover{color:var(--primary)}
.ft-bottom{margin-top:30px;padding-top:20px;border-top:1px solid var(--line);display:flex;justify-content:space-between;
  font-size:12.5px;color:var(--ink-3);flex-wrap:wrap;gap:10px}

/* ---------------- 后台 ---------------- */
.adm{display:grid;grid-template-columns:216px minmax(0,1fr);min-height:100vh}
@media(max-width:900px){.adm{grid-template-columns:1fr}}
.adm-side{background:#131a2b;color:#94a3b8;padding:20px 14px;position:sticky;top:0;height:100vh;overflow-y:auto}
@media(max-width:900px){.adm-side{position:static;height:auto}}
.adm-brand{display:flex;align-items:center;gap:10px;color:#fff;padding:6px 8px 20px}
.adm-brand .brand-mark{background:linear-gradient(135deg,#6366f1,#22d3ee);color:#fff;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-size:0}
.adm-brand b{font-size:15px;display:block}
.adm-brand i{font-style:normal;font-size:11px;color:#64748b}
.adm-nav{display:flex;flex-direction:column;gap:3px}
.adm-nav a{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:9px;font-size:13.8px;color:#94a3b8}
.adm-nav a:hover{background:rgba(255,255,255,.06);color:#e2e8f0}
.adm-nav a.on{background:linear-gradient(135deg,#4f46e5,#4338ca);color:#fff;font-weight:600}
.adm-nav .nav-sep{font-size:11px;color:#475569;padding:14px 12px 6px;letter-spacing:1px}
.adm-main{background:var(--bg);padding:26px 30px 60px;min-width:0}
.adm-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:22px;flex-wrap:wrap}
.adm-head h1{font-size:21px}
.adm-head .ah-sub{font-size:13px;color:var(--ink-3);margin-top:5px}
.adm-tools{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px 22px}
.card + .card{margin-top:18px}
.card-h{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:16px;flex-wrap:wrap}
.card-h h3{font-size:15.5px;display:flex;align-items:center;gap:8px}
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:#fff}
.line-1{max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.adm-stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}
@media(max-width:900px){.adm-stat-grid{grid-template-columns:repeat(2,1fr)}}
.adm-stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:17px 19px;box-shadow:var(--shadow);display:flex;gap:14px;align-items:center}
.adm-stat .as-ico{width:44px;height:44px;border-radius:13px;display:grid;place-items:center;flex:0 0 auto}
.adm-stat b{display:block;font-size:22px;letter-spacing:-.5px}
.adm-stat span{font-size:12.5px;color:var(--ink-3)}
.bar-split{display:flex;gap:16px;flex-wrap:wrap}
.bar-item{flex:1;min-width:200px}
.bar-item .bi-top{display:flex;justify-content:space-between;font-size:13px;color:var(--ink-2);margin-bottom:7px}
.bar-track{height:9px;border-radius:6px;background:var(--bg-2);overflow:hidden}
.bar-fill{height:100%;border-radius:6px;background:linear-gradient(90deg,#4f46e5,#06b6d4)}

/* ---------------- 实验设计 ---------------- */
.repeat-list{list-style:none;margin:0 0 14px;padding:0;display:flex;flex-direction:column;gap:10px}
.repeat-list li{display:flex;align-items:flex-start;gap:10px}
.repeat-list li input[type=text]{flex:1}
.repeat-list .row-del{flex:0 0 auto;margin-top:6px}
.repeat-steps{counter-reset:none}
.repeat-steps li{position:relative;align-items:flex-start}
.repeat-steps li .step-no{flex:0 0 auto;width:26px;height:26px;margin-top:6px;border-radius:50%;
  background:#eef2ff;color:#4f46e5;font-weight:600;font-size:13px;display:grid;place-items:center}
.repeat-steps li textarea{flex:1;min-height:64px}
.step-list{margin:0;padding-left:22px;display:flex;flex-direction:column;gap:12px}
.step-list li{line-height:1.7;padding-left:6px}
.chip-list{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:9px}
.chip-list li{background:var(--bg-2);border:1px solid var(--line);border-radius:999px;padding:6px 13px;font-size:13.5px}
.design-card{transition:transform .12s ease,box-shadow .12s ease}
.design-card:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(15,23,42,.08)}

.design-card .dc-main{display:block;color:inherit;text-decoration:none}
.design-card .dc-acts{display:flex;gap:8px;align-items:center;margin-top:12px;padding-top:12px;border-top:1px solid var(--line, #e2e8f0)}
.design-card .dc-acts .btn{padding:5px 10px;font-size:12.5px}

/* ---- 记录本：选实验的筛选区 ---- */
.nb-pick-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.nb-pick-grid .field{margin:0}
@media(max-width:720px){.nb-pick-grid{grid-template-columns:1fr}}

/* ---- 自建仿真：参数区间设定行 ---- */
.param-row{border:1px solid var(--line,#e2e8f0);border-radius:11px;padding:12px 13px;margin-bottom:11px;background:var(--soft,#f8fafc)}
.param-row .pr-head{display:flex;align-items:baseline;gap:9px;margin-bottom:9px}
.param-row .pr-head b{font-size:13.6px;color:var(--ink,#1e293b)}
.param-row .pr-key{font-size:11.5px;color:var(--ink-3,#94a3b8);font-family:ui-monospace,Consolas,monospace}
.pr-grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
@media(max-width:720px){.pr-grid3{grid-template-columns:repeat(2,1fr)}}
.pr-grid3 .field{margin-bottom:0}
.pr-grid3 .field label{font-size:12px}
.pr-grid3 input,.pr-grid3 select{padding:6px 9px;font-size:13px}
.design-card .dc-link{display:block;color:inherit;text-decoration:none}

/* ---- 记录本可搜索组合框 ---- */
.combo{position:relative}
.combo-input{width:100%;padding-right:34px;background:var(--card,#fff)}
.combo-input:focus{border-color:var(--brand,#4f46e5)}
.combo-arrow{position:absolute;right:11px;top:50%;transform:translateY(-50%);color:var(--ink-3,#94a3b8);pointer-events:none;display:flex}
.combo-list{position:absolute;z-index:60;left:0;right:0;top:calc(100% + 5px);max-height:320px;overflow:auto;
  background:var(--card,#fff);border:1px solid var(--line,#e2e8f0);border-radius:11px;
  box-shadow:0 13px 34px rgba(15,23,42,.14);padding:5px}
.combo-group{font-size:11.5px;color:var(--ink-3,#94a3b8);padding:7px 9px 3px;font-weight:600;letter-spacing:.4px}
.combo-item{display:flex;align-items:center;justify-content:space-between;gap:9px;width:100%;
  border:0;background:none;text-align:left;cursor:pointer;padding:8px 10px;border-radius:8px;font:inherit}
.combo-item b{font-weight:500;font-size:13.6px;color:var(--ink,#1e293b);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.combo-item i{font-style:normal;font-size:11.5px;color:var(--ink-3,#94a3b8);white-space:nowrap;flex-shrink:0}
.combo-item:hover,.combo-item:focus{background:var(--brand-soft,#eef2ff);outline:none}
.combo-item:hover b{color:var(--brand,#4f46e5)}

/* ---- 站内确认模态（替代原生 confirm）---- */
.gw-dialog{border:0;padding:0;background:transparent;max-width:min(92vw,420px)}
.gw-dialog::backdrop{background:rgba(15,23,42,.45)}
.gw-dialog-box{background:#fff;border-radius:14px;padding:22px 22px 18px;box-shadow:0 24px 60px rgba(15,23,42,.28)}
.gw-dialog-box h3{margin:0 0 10px;font-size:17px;font-weight:700;color:#0f172a}
.gw-dialog-msg{margin:0 0 18px;font-size:14px;line-height:1.7;color:#475569}
.gw-dialog-acts{display:flex;gap:10px;justify-content:flex-end}

@media(max-width:560px){
  .wrap{padding:0 14px}
  .sec{margin-top:32px}
  .page-head h1{font-size:21px}
  .detail-hero{padding:24px 20px}
  .detail-hero h1{font-size:21px}
  .panel{padding:17px 16px}
}