/* ══════════════════════════════════════════════════════════
   智慧图书馆 · 楼层导览
   视觉语言：浅灰纸面 / 灰蓝导视条 / 斜视三维平面
   ══════════════════════════════════════════════════════════ */
*{margin:0;padding:0;box-sizing:border-box}
[hidden]{display:none!important}

:root{
  --paper:#F3F6F8;
  --plate:#FFFFFF;
  --rail:#C4D0DA;
  --rail-deep:#ADBECA;
  --ink:#1B2733;
  --ink-2:#485866;
  --muted:#71808E;
  --hint:#94A2AF;
  --white:#FFFFFF;
  --line:rgba(25,42,58,.10);
  --accent:#52799B;
  --accent-deep:#3A6184;
  --rail-active:#FFFFFF;

  --sans:"Noto Sans CJK SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --serif:"Noto Serif CJK SC","Source Han Serif SC","Songti SC","STSong",serif;
  --num:"Helvetica Neue","Liberation Sans",Arial,var(--sans);

  --shadow-card:0 30px 70px -44px rgba(24,40,55,.38);
  --shadow-pop:0 40px 90px -34px rgba(20,34,48,.35);
}

html{-webkit-text-size-adjust:100%}
body{
  min-height:100dvh;height:100dvh;overflow:hidden;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{list-style:none}
svg{display:block}
:focus-visible{outline:2px solid var(--accent-deep);outline-offset:3px;border-radius:6px}

.sprite{position:absolute;width:0;height:0;overflow:hidden}
.ic{width:22px;height:22px;flex:none}

/* ══════════════ 骨架 ══════════════ */
.app{
  display:grid;
  grid-template-columns:78px minmax(0,1fr) 58px minmax(310px,362px);
  height:100dvh;
  overflow:hidden;
}

/* ══════════════ 左侧导视栏 ══════════════ */
.rail-left{
  position:relative;z-index:8;
  display:flex;flex-direction:column;gap:9px;
  padding:15px 0 18px 14px;
  min-height:0;
}
.home{
  width:54px;height:54px;flex:none;
  display:grid;place-items:center;
  border-radius:16px;background:var(--white);
  color:#4A5C6D;
  box-shadow:0 14px 30px -20px rgba(24,40,55,.5),0 0 0 1px rgba(25,42,58,.04);
  transition:transform .25s ease,box-shadow .25s ease;
}
.home .ic{width:24px;height:24px}
.home:hover{transform:translateY(-1px);box-shadow:0 18px 34px -20px rgba(24,40,55,.55),0 0 0 1px rgba(25,42,58,.06)}

.rail-body{
  position:relative;flex:1;min-height:0;
  width:64px;padding:8px 0;
  border-radius:22px;
  background:var(--rail);
  overflow:hidden;
  display:flex;flex-direction:column;
}
.rail-paint{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;filter:drop-shadow(0 8px 14px rgba(26,43,58,.16))}
.rail-paint path{fill:var(--rail-active);transition:d .45s cubic-bezier(.3,.9,.25,1)}

.rail-tab{
  position:relative;z-index:2;flex:1;
  display:grid;grid-template-columns:auto auto;
  align-content:center;justify-content:center;justify-items:center;
  row-gap:10px;column-gap:6px;
  color:#46596B;
  transition:color .3s ease;
}
.rail-tab .ic{grid-column:1/-1}
.rail-tab .ic{width:22px;height:22px;opacity:.92}
.rail-tab .cn{
  writing-mode:vertical-rl;text-orientation:upright;
  font-size:14.5px;letter-spacing:.2em;line-height:1.1;
}
.rail-tab .en{
  writing-mode:vertical-rl;text-orientation:mixed;
  font-family:var(--num);font-size:8px;letter-spacing:.2em;
  color:#71818F;
  transform:rotate(180deg);align-self:start;padding-top:1px;
}
.rail-tab:hover{color:#243442}
.rail-tab.is-on{color:var(--ink)}
.rail-tab.is-on .en{color:var(--muted)}

/* ══════════════ 楼层轨道 ══════════════ */
.rail-floors{
  position:relative;z-index:7;
  margin:14px 0;
  border-radius:20px;
  background:var(--rail);
  overflow:hidden;
}
.floor-tabs{
  position:absolute;inset:0;z-index:2;
  display:flex;flex-direction:column;justify-content:center;
  gap:26px;
  padding:16px 0;
}
.floor-tab{
  height:44px;width:100%;
  display:grid;place-items:center;
  font-family:var(--num);font-size:14.5px;font-weight:500;letter-spacing:.05em;
  color:#46596B;
  transition:color .3s ease;
}
.floor-tab:hover{color:#243442}
.floor-tab.is-on{color:var(--ink);font-weight:600}
.floor-tab.is-route:not(.is-on){
  color:var(--accent-deep);font-weight:600;
  box-shadow:inset 2px 0 0 var(--accent);
}

/* ══════════════ 地图舞台 ══════════════ */
.stage{
  position:relative;min-width:0;overflow:hidden;
  background:
    linear-gradient(rgba(32,52,70,.032) 1px,transparent 1px) 0 0/72px 72px,
    linear-gradient(90deg,rgba(32,52,70,.032) 1px,transparent 1px) 0 0/72px 72px,
    radial-gradient(120% 95% at 52% 36%,#FFFFFF 0%,#F8FAFC 55%,#EDF1F5 100%);
}

.brand{
  position:absolute;left:30px;top:26px;z-index:6;pointer-events:none;
  display:flex;gap:14px;
}
.brand-mark{
  width:2px;flex:none;border-radius:2px;margin:5px 0 4px;
  background:linear-gradient(180deg,var(--accent) 0%,rgba(82,121,155,.12) 100%);
}
.brand h1{display:flex;align-items:flex-end;gap:16px}
.brand-cn{display:flex;flex-direction:column;gap:3px}
.brand-school{
  font-family:var(--sans);font-weight:500;
  font-size:12.5px;line-height:1.5;letter-spacing:.3em;color:#657482;
}
.brand-name{
  font-family:var(--serif);font-weight:700;
  font-size:26px;line-height:1.35;letter-spacing:.1em;color:#1E2C38;
}
.brand-script{
  font-family:var(--serif);font-style:italic;font-weight:400;
  font-size:21px;letter-spacing:.01em;color:#75848F;
  padding:0 0 4px 15px;border-left:1px solid rgba(25,42,58,.16);
  transform:translateY(-1px);
}

.floor-badge{
  position:absolute;left:34px;top:116px;z-index:5;
  font-family:var(--serif);font-weight:700;font-size:58px;line-height:1;
  letter-spacing:.015em;color:#22303C;
  pointer-events:none;
}
.legend{
  position:absolute;left:38px;top:198px;z-index:5;
  display:flex;flex-direction:column;gap:9px;
  pointer-events:none;
}
.legend li{display:flex;align-items:center;gap:8px;font-size:11px;font-weight:500;letter-spacing:.05em;color:#667786}
.legend .legend-ic{width:15px;height:15px;flex:none}
.legend li:nth-child(8){margin-top:7px}
.legend .is-safety{font-weight:600}

/* ── 三维模型舞台 ── */
.model{
  position:absolute;inset:60px 14px 96px 52px;
  pointer-events:none;
}
.three-view{
  position:absolute;inset:0;overflow:hidden;
  border-radius:28px;
  pointer-events:auto;
  cursor:grab;
  touch-action:none;
  opacity:0;
  transition:opacity .45s ease;
}
.three-view.is-ready{opacity:1}
.three-view.is-dragging{cursor:grabbing}
.three-view canvas{display:block;width:100%;height:100%;outline:none}
.three-fallback{
  position:absolute;inset:0;z-index:5;
  display:grid;place-items:center;
  padding:0 40px;text-align:center;
  color:var(--muted);font-size:12px;line-height:1.8;letter-spacing:.03em;
  pointer-events:none;
}
.three-tip{
  position:absolute;z-index:6;pointer-events:none;
  padding:7px 10px;border-radius:9px;
  background:rgba(40,44,49,.88);color:#fff;
  font-size:10.5px;line-height:1.35;letter-spacing:.03em;
  box-shadow:0 12px 24px -16px rgba(0,0,0,.65);
  transform:translate(12px,-50%);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  white-space:nowrap;
}
.three-tip b{display:block;font-weight:500}
.three-tip span{color:rgba(255,255,255,.62);font-family:var(--num);font-size:9px}

/* ── 图书馆小向导「小图」 ── */
.mascot{
  --mascot-w:clamp(68px,7vw,104px);
  position:absolute;left:0;top:0;z-index:3;
  width:var(--mascot-w);
  opacity:0;
  transition:opacity .35s ease;
  pointer-events:none;
  will-change:transform,opacity;
}
.mascot.is-on{opacity:1}
.mascot::after{
  content:'';position:absolute;left:50%;bottom:0;
  width:54%;height:9px;transform:translateX(-50%);
  background:radial-gradient(50% 50% at 50% 50%,rgba(30,42,54,.24),rgba(30,42,54,0) 72%);
  border-radius:50%;
}
.mascot-sprite{
  position:relative;
  transform-origin:50% 100%;
  transition:transform .18s ease,opacity .26s ease;
}
.mascot-sprite.is-flip{transform:scaleX(-1)}
.mascot.is-hopping .mascot-sprite{opacity:0}
.mascot-svg{display:block;width:100%;height:auto;overflow:visible;filter:drop-shadow(0 9px 11px rgba(30,42,54,.20))}
.mascot.is-on .mascot-svg{animation:mascotIn .48s cubic-bezier(.2,.9,.3,1.22) both}

.mascot-bubble{
  position:absolute;left:50%;bottom:calc(100% + 9px);z-index:2;
  transform:translateX(calc(-50% + var(--m-shift,0px)));
  display:flex;align-items:center;gap:6px;
  max-width:min(44vw,218px);
  padding:6px 11px 6px 6px;
  border:1px solid rgba(255,255,255,.95);border-radius:12px;
  background:rgba(255,255,255,.96);
  box-shadow:0 16px 32px -20px rgba(20,26,34,.62);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  font-size:11px;line-height:1.3;letter-spacing:.02em;color:var(--ink-2);
  white-space:nowrap;
}
.mascot-bubble::after{
  content:'';position:absolute;left:calc(50% - var(--m-shift,0px));bottom:-4.5px;
  width:9px;height:9px;margin-left:-4.5px;
  background:#fff;border-right:1px solid rgba(30,42,54,.06);border-bottom:1px solid rgba(30,42,54,.06);
  transform:rotate(45deg);border-radius:0 0 2px 0;
}
.mascot-bubble b{
  flex:none;display:grid;place-items:center;height:19px;padding:0 6px;
  border-radius:999px;background:var(--accent);color:#fff;
  font-size:9.5px;font-weight:500;letter-spacing:.08em;
}
.mascot-bubble span{min-width:0;overflow:hidden;text-overflow:ellipsis}

.m-leg-l,.m-leg-r,.m-arm-l,.m-arm-r,.m-head,.m-scarf-tail,.m-figure{transform-box:view-box}
.m-leg-l{transform-origin:52.6px 97px}
.m-leg-r{transform-origin:67.4px 97px}
.m-arm-l{transform-origin:45.6px 82px}
.m-arm-r{transform-origin:74.4px 82px}
.m-head{transform-origin:60px 70px}
.m-scarf-tail{transform-origin:74px 79px;animation:mascotScarf 2.2s ease-in-out infinite alternate}
.m-figure{transform-origin:60px 140px}
.mascot.is-idle .m-figure{animation:mascotIdle 2.8s ease-in-out infinite}
.mascot.is-walking .m-figure{animation:mascotBob .27s ease-in-out infinite alternate}
.mascot.is-walking .m-leg-l{animation:mascotStepL .5s ease-in-out infinite alternate}
.mascot.is-walking .m-leg-r{animation:mascotStepR .5s ease-in-out infinite alternate}
.mascot.is-walking .m-arm-l{animation:mascotArmL .5s ease-in-out infinite alternate}
.mascot.is-walking .m-arm-r{animation:mascotArmR .5s ease-in-out infinite alternate}
.mascot.is-walking .m-head{animation:mascotHead .5s ease-in-out infinite alternate}

@keyframes mascotIn{from{opacity:0;transform:translateY(12px) scale(.86)}to{opacity:1;transform:none}}
@keyframes mascotIdle{0%,100%{transform:translateY(0)}50%{transform:translateY(-1.5px)}}
@keyframes mascotBob{from{transform:translateY(0)}to{transform:translateY(-2.6px)}}
@keyframes mascotStepL{from{transform:rotate(19deg)}to{transform:rotate(-20deg)}}
@keyframes mascotStepR{from{transform:rotate(-20deg)}to{transform:rotate(19deg)}}
@keyframes mascotArmL{from{transform:rotate(-16deg)}to{transform:rotate(17deg)}}
@keyframes mascotArmR{from{transform:rotate(8deg)}to{transform:rotate(-7deg)}}
@keyframes mascotHead{from{transform:rotate(-1.2deg)}to{transform:rotate(1.2deg)}}
@keyframes mascotScarf{from{transform:rotate(-4deg)}to{transform:rotate(9deg)}}

/* ── 区域卡片 ── */
.zone-card{
  position:absolute;left:32px;bottom:112px;z-index:9;
  width:328px;padding:18px 20px 20px;
  background:var(--white);border-radius:22px;
  box-shadow:var(--shadow-card),0 0 0 1px rgba(25,42,58,.05);
  animation:cardIn .32s cubic-bezier(.2,.9,.25,1) both;
}
@keyframes cardIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.zc-head{display:flex;align-items:center;gap:8px;margin-bottom:10px}
.zc-dot{width:7px;height:7px;border-radius:50%;background:var(--accent)}
.zc-type{font-size:10.5px;letter-spacing:.12em;color:var(--muted)}
.zc-close{margin-left:auto;color:var(--hint);padding:4px;border-radius:8px;transition:color .2s,background .2s}
.zc-close:hover{color:var(--ink);background:#F2F6F9}
.zc-close .ic{width:15px;height:15px}
.zc-name{font-family:var(--sans);font-weight:500;font-size:21px;letter-spacing:.05em;line-height:1.3;color:#25333F}
.zc-meta{margin-top:7px;font-size:11.5px;color:var(--ink-2);line-height:1.6}
.zc-stats{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(52px,1fr));gap:14px;
  margin-top:14px;padding-top:13px;
  border-top:1px solid var(--line);
}
.zc-stat{min-width:0}
.zc-stat b{
  display:block;font-family:var(--num);font-weight:300;font-size:19px;line-height:1;
  font-variant-numeric:tabular-nums;
}
.zc-stat span{display:block;margin-top:5px;font-size:10px;color:var(--muted);letter-spacing:.06em}
.zc-actions{display:flex;gap:8px;margin-top:15px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  height:38px;padding:0 16px;border-radius:10px;
  font-size:12.5px;letter-spacing:.03em;transition:background .2s,color .2s,transform .2s;
}
.btn .ic{width:16px;height:16px}
.btn:active{transform:scale(.985)}
.btn-primary{background:var(--accent-deep);color:#fff}
.btn-primary:hover{background:#2E5273}
.btn-ghost{background:#F2F5F7;color:var(--ink-2)}
.btn-ghost:hover{background:#E9EFF3}
.zc-modes{display:flex;gap:7px;margin-top:11px}
.zc-mode{
  flex:1;display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:34px;border-radius:9px;border:1px solid var(--line);
  background:#F8FAFB;color:var(--ink-2);
  font-size:11.5px;letter-spacing:.03em;
  transition:background .2s,color .2s,border-color .2s;
}
.zc-mode .ic{width:15px;height:15px;color:var(--muted);transition:color .2s}
.zc-mode:hover{background:#F1F6F9}
.zc-mode.is-on{background:#EEF4F8;border-color:rgba(58,97,132,.28);color:var(--accent-deep)}
.zc-mode.is-on .ic{color:var(--accent-deep)}
.zc-route{margin-top:11px;font-size:11px;line-height:1.65;color:var(--accent-deep);letter-spacing:.02em}

/* ── 设施条 ── */
.fac-bar{
  position:absolute;left:50%;bottom:20px;z-index:8;
  transform:translateX(-50%);
  display:flex;padding:0 6px;
  background:var(--white);border-radius:16px;
  box-shadow:0 22px 50px -34px rgba(24,40,55,.45),0 0 0 1px rgba(25,42,58,.05);
  overflow:hidden;
}
.fac{
  position:relative;
  width:102px;height:68px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;
  background:transparent;border-radius:0;
  color:#5D6E7D;font-size:10px;letter-spacing:.04em;
  transition:background .2s ease,color .2s ease;
}
.fac+.fac::before{
  content:'';position:absolute;left:0;top:17px;bottom:17px;width:1px;
  background:var(--line);
}
.fac .ic{width:22px;height:22px;color:#526B80}
.fac:hover{background:#F5F8FA;color:var(--accent-deep)}
.fac:hover .ic{color:var(--accent-deep)}
.fac.is-hot{background:#F1F6F9;color:var(--accent-deep)}
.fac.is-hot .ic{color:var(--accent-deep)}
.fac[data-fac="exit"] .ic,
.fac[data-fac="exit"].is-hot .ic{color:#158A4F}

/* ── 提示 ── */
.toast{
  position:absolute;left:50%;bottom:100px;z-index:30;
  transform:translateX(-50%);
  max-width:70%;
  padding:10px 17px;border-radius:999px;
  background:rgba(38,41,46,.94);color:#fff;
  font-size:12px;letter-spacing:.02em;line-height:1.5;
  box-shadow:0 18px 34px -20px rgba(0,0,0,.6);
  animation:toastIn .25s ease both;
}
@keyframes toastIn{from{opacity:0;transform:translate(-50%,8px)}to{opacity:1;transform:translate(-50%,0)}}

/* ══════════════ 右侧列表 ══════════════ */
.sheet{
  position:relative;z-index:6;
  margin:16px 16px 16px 10px;
  display:flex;flex-direction:column;min-height:0;
  background:var(--white);border-radius:26px;
  box-shadow:var(--shadow-card),0 0 0 1px rgba(255,255,255,.7) inset;
  overflow:hidden;
}
.sheet-head{display:flex;align-items:center;gap:12px;padding:26px 24px 12px}
.sheet-head .wx{width:28px;height:28px;color:#53697C}
.clock{
  font-family:var(--num);font-weight:200;font-size:44px;line-height:1;
  letter-spacing:-.04em;font-variant-numeric:tabular-nums;color:#1E2B37;
}
.cal{
  margin-left:auto;display:flex;flex-direction:column;gap:4px;
  font-family:var(--num);font-size:10px;line-height:1.3;
  color:#8996A2;text-align:right;letter-spacing:.04em;
  font-variant-numeric:tabular-nums;
}
.sheet-sub{
  display:flex;justify-content:space-between;align-items:baseline;gap:10px;
  padding:0 24px 15px;
  border-bottom:1px solid var(--line);
  font-size:10.5px;color:#7B8996;letter-spacing:.06em;
}
#sheetTitle{color:#465A6C;font-weight:500}
#sheetMeta{font-family:var(--num);font-size:10px;color:#93A1AD;flex:none}
.sheet-list{
  flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;
  padding:6px 14px 14px;
  display:flex;flex-direction:column;gap:0;
  scrollbar-width:thin;
}
.sheet-list::-webkit-scrollbar{width:7px}
.sheet-list::-webkit-scrollbar-thumb{background:rgba(30,45,60,.13);border-radius:4px;border:2px solid #fff}
.sheet-list::-webkit-scrollbar-track{background:transparent}
.mobile-info-tabs{display:none}

.poi{
  display:flex;align-items:center;gap:10px;
  min-height:44px;padding:0 10px;
  border-radius:8px;background:transparent;
  border-bottom:1px solid rgba(25,42,58,.075);
  text-align:left;flex:none;
  transition:background .18s ease,color .18s ease;
}
.poi:last-child{border-bottom-color:transparent}
.poi:hover{background:#F6F9FB}
.poi.is-on{background:#F0F5F9;box-shadow:inset 2px 0 0 var(--accent)}
.poi.is-start{box-shadow:inset 2px 0 0 rgba(82,121,155,.35)}
.poi-name{
  font-size:12.5px;letter-spacing:.03em;color:#394754;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.poi-meta{
  margin-left:auto;flex:none;
  font-family:var(--num);font-size:10px;color:#93A1AD;letter-spacing:.03em;
}
.poi.is-on .poi-name{color:#22405A;font-weight:600}
.poi.is-closed .poi-name{color:#9AA0A7}
.poi.is-closed .poi-meta{color:#C08A8A}
.poi-group{
  display:flex;align-items:center;gap:7px;
  padding:13px 10px 6px;
  font-size:11px;font-weight:600;letter-spacing:.07em;color:#596B7B;
}
.poi-group:first-child{padding-top:8px}
.poi-group-ic{width:14px;height:14px;flex:none}
.poi-group-count{
  margin-left:auto;font-family:var(--num);font-size:9px;font-weight:400;
  color:var(--hint);letter-spacing:.04em;
}
.list-tip{
  margin:10px 6px 0;padding:14px 2px 2px;border-top:1px solid var(--line);
  font-size:10.5px;line-height:1.75;color:var(--hint);letter-spacing:.03em;
}
.sheet-info{
  margin:12px 6px 0;padding:15px 15px 13px;
  border:1px solid rgba(82,121,155,.12);border-radius:13px;
  background:linear-gradient(145deg,#F7FAFC,#EEF4F7);
}
.sheet-info-kicker{display:block;margin-bottom:7px;font-size:9px;letter-spacing:.2em;color:var(--hint)}
.sheet-info>b{display:block;font-family:var(--serif);font-size:15px;letter-spacing:.05em;color:#293C4B}
.sheet-info>p{margin-top:7px;font-size:10.5px;line-height:1.7;color:var(--muted)}
.sheet-info>div{display:flex;justify-content:space-between;gap:12px;margin-top:8px;padding-top:8px;border-top:1px solid var(--line);font-size:10px;color:var(--hint)}
.sheet-info strong{font-family:var(--num);font-weight:500;color:var(--ink-2)}

/* ══════════════ 浮层面板 ══════════════ */
.overlay{
  position:fixed;inset:0;z-index:100;
  display:flex;align-items:center;justify-content:center;
  padding:38px;
  background:rgba(232,239,244,.84);
  -webkit-backdrop-filter:blur(9px);backdrop-filter:blur(9px);
  animation:fade .22s ease both;
}
@keyframes fade{from{opacity:0}to{opacity:1}}
.panel{
  position:relative;
  width:min(900px,100%);max-height:86vh;overflow-y:auto;
  padding:42px 50px 46px;
  background:#fff;border-radius:26px;
  box-shadow:var(--shadow-pop);
  animation:pop .3s cubic-bezier(.2,.9,.25,1) both;
}
@keyframes pop{from{opacity:0;transform:translateY(14px) scale(.99)}to{opacity:1;transform:none}}
.panel-close{
  position:absolute;right:18px;top:18px;
  width:36px;height:36px;display:grid;place-items:center;
  border-radius:50%;color:var(--muted);background:#EFF4F7;
  transition:background .2s,color .2s;
}
.panel-close:hover{background:#E7EEF2;color:var(--ink)}
.panel-close .ic{width:16px;height:16px}
.panel h2{font-family:var(--sans);font-weight:500;font-size:27px;letter-spacing:.06em;color:#243440}
.panel .lede{margin-top:10px;font-size:12.5px;line-height:1.7;color:var(--muted);max-width:56ch}
.guide-section{margin-top:28px;padding-top:23px;border-top:1px solid var(--line)}
.guide-section h3{font-family:var(--serif);font-size:18px;font-weight:700;letter-spacing:.08em;color:#293B4A}
.guide-legend{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:2px 24px;
  margin-top:12px;
}
.guide-legend li{
  display:flex;align-items:flex-start;gap:9px;
  min-width:0;padding:9px 2px;border-bottom:1px solid rgba(25,42,58,.07);
}
.guide-legend-ic{width:18px;height:18px;flex:none;margin-top:1px}
.guide-legend span{display:flex;flex-direction:column;gap:3px;min-width:0}
.guide-legend b{font-size:11.5px;font-weight:600;color:var(--ink-2)}
.guide-legend small{font-size:10px;line-height:1.55;color:var(--hint)}
.line-key{
  display:flex;flex-wrap:wrap;gap:11px 22px;
  margin-top:16px;padding:13px 15px;
  background:#F6F9FB;border-radius:11px;
  font-size:10.5px;color:var(--muted);
}
.line-key span{display:inline-flex;align-items:center;gap:7px}
.line-key b{font-weight:600;color:var(--ink-2)}
.line-swatch{display:block;width:28px;height:0;border-top:1.5px solid #526B80}
.line-swatch.is-corridor{height:10px;border:0;border-radius:3px;background:#E3E7EA}
.line-swatch.is-route{height:4px;border:0;border-radius:999px;background:var(--accent)}
.emergency-panel{
  margin-top:26px;padding:18px 20px 16px;
  border:1px solid rgba(214,63,69,.2);border-radius:14px;
  background:linear-gradient(135deg,rgba(214,63,69,.055),rgba(21,138,79,.035));
}
.emergency-title{display:flex;align-items:center;gap:9px;color:#A93238;font-size:14px;font-weight:600;letter-spacing:.08em}
.emergency-title .ic{width:19px;height:19px}
.emergency-row{display:grid;grid-template-columns:112px minmax(0,1fr);gap:14px;padding:12px 0;border-bottom:1px solid rgba(25,42,58,.08)}
.emergency-row:last-child{border-bottom:0;padding-bottom:2px}
.emergency-row b{font-size:11.5px;font-weight:600;color:var(--ink-2)}
.emergency-row span{font-size:12px;line-height:1.75;color:#4D5D69}
.emergency-row a{color:#A93238;font-weight:600;text-decoration:none;border-bottom:1px solid rgba(169,50,56,.28)}

.search-field{
  display:flex;align-items:center;gap:12px;
  margin-top:26px;padding:14px 18px;
  background:#F2F5F7;border-radius:14px;
  transition:box-shadow .2s,background .2s;
}
.search-field:focus-within{background:#fff;box-shadow:0 0 0 1.4px var(--accent),0 14px 30px -22px rgba(0,0,0,.4)}
.search-field .ic{width:19px;height:19px;color:var(--muted)}
.search-field input{
  flex:1;border:0;background:none;outline:none;
  font:400 15px var(--sans);color:var(--ink);letter-spacing:.02em;
}
.search-field input::placeholder{color:var(--hint)}
.kbd{
  font-family:var(--num);font-size:10px;color:var(--muted);
  border:1px solid var(--line);border-radius:5px;padding:2px 6px;
}

.results{margin-top:18px;display:flex;flex-direction:column;gap:2px}
.result{
  display:flex;align-items:center;gap:12px;
  padding:12px 14px;border-radius:11px;text-align:left;
  transition:background .16s;
}
.result:hover{background:#F3F6F8}
.result .rfloor{
  width:32px;flex:none;text-align:center;
  font-family:var(--num);font-size:10.5px;color:#fff;
  background:var(--rail);border-radius:6px;padding:3px 0;
}
.result .rname{font-size:13.5px;color:#33363A}
.result .rname em{font-style:normal;color:var(--accent-deep);font-weight:500}
.result .rmeta{margin-left:auto;font-size:10.5px;color:var(--hint);font-family:var(--num);flex:none}
.results .empty{padding:18px 14px;font-size:12.5px;color:var(--hint)}

.evt-list{display:flex;flex-direction:column;gap:2px;margin-top:26px}
.evt{
  display:flex;gap:20px;padding:20px 4px;
  border-top:1px solid var(--line);
}
.evt:last-child{border-bottom:1px solid var(--line)}
.evt-date{width:66px;flex:none;text-align:center;padding-top:2px}
.evt-date b{display:block;font-family:var(--num);font-weight:300;font-size:30px;line-height:1}
.evt-date span{display:block;margin-top:6px;font-size:10px;color:var(--muted);letter-spacing:.04em}
.evt-body h3{font-size:15px;font-weight:500;letter-spacing:.03em}
.evt-body p{margin-top:7px;font-size:12px;line-height:1.7;color:var(--muted);max-width:52ch}
.evt-tag{
  display:inline-block;margin-bottom:9px;
  font-size:9.5px;letter-spacing:.14em;color:var(--accent-deep);
  background:#EDF1F5;border-radius:5px;padding:3px 7px;
}
.evt-jump{
  margin-top:11px;display:inline-flex;align-items:center;gap:6px;
  font-size:11.5px;color:var(--ink-2);
  border-bottom:1px solid var(--line);padding-bottom:2px;
  transition:color .2s,border-color .2s;
}
.evt-jump:hover{color:var(--accent-deep);border-color:var(--accent)}
.evt-jump .ic{width:13px;height:13px}

.panel-grid{display:grid;grid-template-columns:1fr 1fr;gap:2px 34px;margin-top:24px}
.kv-item{padding:15px 2px;border-top:1px solid var(--line)}
.kv-item h4{font-size:11px;font-weight:400;letter-spacing:.1em;color:var(--muted);margin-bottom:8px}
.kv-item p{font-size:13px;line-height:1.75;color:#3C4046}
.kv-item p b{font-weight:500;font-family:var(--num)}
.note{
  margin-top:26px;padding:16px 18px;background:#F3F6F8;border-radius:12px;
  font-size:11.5px;line-height:1.8;color:var(--muted);
}
.note b{color:var(--ink-2);font-weight:500}
.panel-actions{display:flex;gap:9px;margin-top:26px;flex-wrap:wrap}

/* ══════════════ 窄屏 ══════════════ */
@media (max-width:1280px){
  .app{grid-template-columns:72px minmax(0,1fr) 56px minmax(296px,336px)}
  .rail-left{padding-left:12px}
  .rail-body,.home{width:58px}
  .home{height:50px;border-radius:15px}
  .brand{left:26px;top:22px}
  .floor-badge{left:30px;top:106px;font-size:58px}
  .legend{left:33px;top:184px}
  .model{inset:54px 10px 92px 46px}
  .zone-card{left:26px;width:308px}
  .sheet{margin:13px 13px 13px 8px;border-radius:24px}
  .clock{font-size:36px}
  .fac{width:94px}
}

@media (max-width:1040px){
  .app{grid-template-columns:64px minmax(0,1fr) 52px minmax(278px,316px)}
  .rail-body,.home{width:52px}
  .rail-tab .cn{font-size:13px}
  .rail-tab .en{font-size:7.5px}
  .sheet-head{padding:20px 18px 10px}
  .clock{font-size:32px}
  .sheet-sub{padding:0 18px 12px}
  .fac{width:84px;height:62px;font-size:9.5px}
  .fac .ic{width:19px;height:19px}
  .zone-card{width:286px;bottom:98px}
}

@media (max-width:900px){
  .app{grid-template-columns:1fr;height:100dvh}
  .rail-left{position:fixed;left:12px;top:12px;z-index:40;padding:0}
  .rail-left .rail-body{display:none}
  .home{width:42px;height:42px;border-radius:13px;box-shadow:0 8px 20px -16px rgba(0,0,0,.5)}
  .home .ic{width:20px;height:20px}
  .rail-floors{
    position:fixed;left:10px;right:10px;top:66px;z-index:38;
    width:auto;height:auto;margin:0;border-radius:13px;
    background:rgba(255,255,255,.82);
    -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
    box-shadow:0 10px 24px -20px rgba(20,36,50,.55),0 0 0 1px rgba(25,42,58,.05);
  }
  .floor-tabs{position:static;flex-direction:row;justify-content:space-between;padding:5px;gap:2px}
  .floor-tab{height:32px;flex:1;border-radius:8px;font-size:12.5px;color:#6B7B89}
  .rail-floors .rail-paint{display:none}
  .floor-tab.is-on{background:#fff;color:var(--ink);font-weight:600;box-shadow:0 2px 6px rgba(20,36,50,.10)}
  .floor-tab.is-route:not(.is-on){
    color:var(--accent-deep);
    background:rgba(82,121,155,.09);
    box-shadow:none;
  }
  .stage{grid-row:1;grid-column:1;inset:0;overflow:hidden}
  .brand{left:64px;top:11px;gap:9px}
  .brand-mark{margin:3px 0 2px}
  .brand h1{gap:9px}
  .brand-cn{gap:1px}
  .brand-school{font-size:clamp(9px,2.3vw,10.5px);letter-spacing:.22em}
  .brand-name{font-size:clamp(15px,4.4vw,19px);letter-spacing:.08em}
  .brand-script{font-size:clamp(12.5px,3.6vw,16px);padding:0 0 2px 9px}
  .floor-badge{left:15px;top:112px;font-size:34px}
  .legend{left:15px;right:15px;top:154px;flex-direction:row;flex-wrap:wrap;gap:5px 12px}
  .legend li{font-size:9.5px;gap:5px}
  .legend .legend-ic{width:13px;height:13px}
  .model{inset:176px 0 40vh}
  .three-view{border-radius:18px}
  .mascot{--mascot-w:66px}
  .mascot-bubble{max-width:min(62vw,190px);font-size:10px;padding:5px 9px 5px 5px}
  .mascot-bubble b{height:17px;font-size:9px}
  .fac-bar{display:none}
  .sheet{
    position:fixed;left:10px;right:10px;bottom:10px;z-index:35;
    max-height:38vh;margin:0;border-radius:20px;
  }
  .sheet-head{padding:14px 16px 8px}
  .clock{font-size:24px}
  .sheet-head .wx{width:24px;height:24px}
  .sheet-sub{padding:0 16px 9px}
  .sheet-list{padding-bottom:10px}
  .mobile-info-tabs{
    display:grid;grid-template-columns:repeat(3,1fr);gap:6px;
    flex:none;padding:7px 10px 9px;border-top:1px solid var(--line);
    background:rgba(248,250,252,.95);
  }
  .mobile-info-tabs button{
    height:30px;border-radius:8px;background:#EEF3F6;
    color:#526577;font-size:10.5px;letter-spacing:.04em;
  }
  .mobile-info-tabs button:active{background:#E4ECF1}
  .zone-card{
    left:10px;right:10px;bottom:12px;width:auto;max-width:none;
    max-height:56vh;overflow:auto;
  }
  .app:has(.zone-card:not([hidden])) .sheet{display:none}
  .toast{bottom:calc(38vh + 18px)}
  .app:has(.zone-card:not([hidden])) .toast{bottom:calc(56vh + 18px)}
  .overlay{padding:14px}
  .panel{padding:30px 22px 34px;border-radius:20px;max-height:90vh}
  .panel h2{font-size:23px}
  .panel-grid{grid-template-columns:1fr;gap:0}
  .guide-legend{grid-template-columns:1fr;gap:0}
  .emergency-row{grid-template-columns:1fr;gap:4px}
  .evt{gap:14px}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}

/* ══════════════ 登录门禁 ══════════════ */
.gate{
  position:fixed;inset:0;z-index:120;
  display:grid;place-items:center;padding:24px;
  background:
    linear-gradient(rgba(32,52,70,.03) 1px,transparent 1px) 0 0/64px 64px,
    linear-gradient(90deg,rgba(32,52,70,.03) 1px,transparent 1px) 0 0/64px 64px,
    radial-gradient(120% 90% at 50% 30%,#FFFFFF 0%,#F5F9FB 55%,#EAF0F5 100%);
}
.gate-card{
  width:100%;max-width:396px;
  padding:40px 36px 32px;
  background:rgba(255,255,255,.94);
  border:1px solid rgba(255,255,255,.95);
  border-radius:26px;
  box-shadow:0 44px 100px -44px rgba(20,36,50,.5),0 0 0 1px rgba(25,42,58,.04);
  backdrop-filter:blur(6px);
}
.gate-brand{display:flex;align-items:flex-end;gap:10px;flex-wrap:wrap}
.gate-cn{
  font-family:var(--sans);font-weight:400;font-size:20px;line-height:1.5;
  letter-spacing:.18em;color:#25313C;
}
.gate-script{
  font-family:var(--serif);font-style:italic;font-size:24px;
  color:#63727F;transform:translateY(-1px);
}
.gate-sub{
  margin:10px 0 26px;font-size:12px;letter-spacing:.1em;color:#8593A0;
}
.gate-field{display:block;margin-bottom:14px}
.gate-field span{
  display:block;margin-bottom:7px;font-size:11px;letter-spacing:.14em;color:var(--ink-2);
}
.gate-field input{
  width:100%;height:46px;padding:0 14px;
  font:inherit;font-size:14px;color:var(--ink);
  background:#F6F9FB;border:1px solid rgba(25,42,58,.12);border-radius:10px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.gate-field input:focus{
  outline:none;background:#fff;border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(82,121,155,.14);
}
.gate-err{margin:-2px 0 12px;font-size:12px;color:#B4544C}
.gate-submit{
  width:100%;height:48px;margin-top:8px;
  display:grid;place-items:center;
  font-size:14px;letter-spacing:.22em;font-weight:500;color:#fff;
  background:linear-gradient(180deg,#5A82A5,#3F6689);
  border-radius:11px;
  box-shadow:0 16px 30px -18px rgba(58,97,132,.8);
  transition:transform .2s ease,filter .2s ease;
}
.gate-submit:hover{filter:brightness(1.04);transform:translateY(-1px)}
.gate-submit:disabled{opacity:.6;transform:none;cursor:default}
.gate-hint{
  margin-top:18px;font-size:10.5px;line-height:1.6;letter-spacing:.04em;
  color:var(--hint);text-align:center;
}

/* ══════════════ 右上角定位 / 账号 ══════════════ */
.locate-ctl{
  position:absolute;right:28px;top:26px;z-index:7;
  display:flex;flex-direction:column;align-items:flex-end;gap:8px;
}
.locate-btn{
  display:flex;align-items:center;gap:9px;
  height:42px;padding:0 18px 0 14px;
  font-size:12.5px;letter-spacing:.06em;color:#42566A;
  background:rgba(255,255,255,.94);
  border:1px solid var(--line);
  border-radius:999px;
  box-shadow:0 16px 40px -30px rgba(24,40,55,.55);
  transition:transform .2s ease,color .2s ease,background .2s ease,box-shadow .2s ease;
  backdrop-filter:blur(4px);
}
.locate-btn .ic{width:19px;height:19px;color:var(--accent)}
.locate-btn:hover{transform:translateY(-1px);color:var(--ink);background:#fff}
.locate-btn.is-picking{
  color:#fff;background:linear-gradient(180deg,#5A82A5,#3F6689);
  border-color:transparent;
  box-shadow:0 18px 36px -20px rgba(58,97,132,.8);
  animation:locatePulse 1.6s ease-in-out infinite;
}
.locate-btn.is-picking .ic{color:#fff}
@keyframes locatePulse{
  0%,100%{box-shadow:0 18px 36px -20px rgba(58,97,132,.8)}
  50%{box-shadow:0 18px 40px -14px rgba(58,97,132,.95)}
}
.account-chip{
  display:flex;align-items:center;gap:4px;
  height:28px;padding:0 4px 0 12px;
  font-size:10.5px;letter-spacing:.04em;color:#8593A0;
  background:rgba(255,255,255,.9);
  border:1px solid rgba(25,42,58,.07);
  border-radius:999px;
  box-shadow:0 8px 20px -18px rgba(24,40,55,.5);
}
.account-name{max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.account-out{
  height:22px;padding:0 9px;font-size:10px;color:var(--ink-2);
  border-radius:999px;transition:background .2s ease,color .2s ease;
}
.account-out:hover{background:rgba(25,42,58,.06);color:var(--ink)}

/* 拾取模式：画布十字光标 */
.three-view.is-picking,.three-view.is-picking canvas{cursor:crosshair!important}

/* 已设置当前位置的提示 */
.locate-btn.has-pos{color:var(--ink)}
.locate-btn.has-pos::after{
  content:'';width:7px;height:7px;border-radius:50%;
  background:#6E9F88;box-shadow:0 0 0 3px rgba(110,159,136,.2);
}

@media (max-width:900px){
  .locate-ctl{right:12px;top:116px;gap:0}
  .locate-btn{height:34px;padding:0 13px 0 11px;font-size:11px;gap:7px}
  .locate-btn .ic{width:16px;height:16px}
  .account-chip{display:none}
  .gate-card{padding:30px 22px 24px;border-radius:22px}
  .gate-cn{font-size:19px}
  .gate-script{font-size:22px}
}