/* ============================================================
 * 胎压计算器 · 正式版 v1.0
 * 视觉规范锁定 = 需求文档 §6.2（与 gear.madake.pro 同色系）
 * 计算 Tab 布局锁定 = 原型 v0.4（§6.1，不允许擅改）
 * ============================================================ */
:root{
  --color-selected:#4bd0fc;
  --color-lite-gray:#ccd1d2;
  --color-dark-gray:#8b979a;
  --color-divider:#3a4143;
  --bg-body:#1a1a1a;
  --bg-panel:#2e3436;
  --bg-card:#262b2d;
  --warn:#f0a35e;
}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
html,body{height:100%;}
body{
  font-family:"Helvetica Neue",Helvetica,Arial,"PingFang SC",sans-serif;
  background:var(--bg-body);
  color:var(--color-lite-gray);
  user-select:none;-webkit-user-select:none;
}
#app{max-width:430px;margin:0 auto;height:100vh;height:100dvh;display:flex;flex-direction:column;background:var(--bg-panel);overflow:hidden;}

/* 顶部 Tab（瘦身） */
#tabbar{flex:0 0 40px;display:flex;background:#232829;border-bottom:1px solid #161819;}
.tab-item{flex:1;display:flex;align-items:center;justify-content:center;gap:5px;cursor:pointer;}
.tab-dot{width:18px;height:18px;border-radius:5px;background:#3a4143;display:flex;align-items:center;justify-content:center;font-size:10px;color:var(--color-dark-gray);}
.tab-item.active .tab-dot{background:rgba(75,208,252,.15);color:var(--color-selected);}
.tab-label{font-size:10px;color:#747b7c;}
.tab-item.active .tab-label{color:var(--color-selected);}

/* ===== 视图切换 ===== */
.view{display:none;flex:1;min-height:0;}
.view.active{display:flex;flex-direction:column;}

/* ===== 舞台区：胎压(上左右) + 体重(左) 图示(中) 车重(右) ===== */
#stage{
  flex:0 0 auto;
  display:grid;
  grid-template-columns:64px 1fr 64px;
  grid-template-rows:auto 1fr;
  column-gap:2px;
  padding:8px 10px 0;
  background:linear-gradient(180deg,#24292b,#222728);
}
.psi{align-self:start;padding-top:4px;}
.psi-f{grid-column:1;grid-row:1;text-align:right;}
.psi-r{grid-column:3;grid-row:1;text-align:left;}
.psi .lb{font-size:11px;color:var(--color-dark-gray);display:flex;align-items:center;gap:4px;}
.psi-f .lb{justify-content:flex-end;}
.psi .rec{font-style:normal;font-size:8px;line-height:1.7;padding:0 4px;border-radius:3px;
  color:var(--color-selected);border:1px solid rgba(75,208,252,.55);background:rgba(75,208,252,.08);}
.psi b{font-size:34px;font-weight:300;color:var(--color-selected);line-height:1.1;}
.psi small{display:block;font-size:9px;color:var(--color-dark-gray);}

.wgt{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;}
.wgt-l{grid-column:1;grid-row:2;}
.wgt-r{grid-column:3;grid-row:2;}
.st{
  width:48px;height:30px;border-radius:7px;border:1px solid var(--color-divider);
  background:rgba(0,0,0,.35);color:var(--color-lite-gray);font-size:17px;line-height:1;cursor:pointer;
}
.st:active{background:rgba(75,208,252,.18);color:var(--color-selected);border-color:var(--color-selected);}
.wv{font-size:19px;color:var(--color-lite-gray);line-height:1;}
.wv small{font-size:9px;color:var(--color-dark-gray);}
.wl{font-size:9px;color:var(--color-dark-gray);text-align:center;line-height:1.35;}

#diagram{grid-column:2;grid-row:1/3;display:block;width:100%;height:auto;align-self:center;}
#legend{grid-column:1/4;display:flex;justify-content:center;gap:12px;padding:2px 0 6px;}
#legend span{font-size:9px;color:var(--color-dark-gray);display:flex;align-items:center;gap:4px;}
#legend i{width:10px;height:2px;background:var(--color-lite-gray);display:inline-block;}
#legend i.dash{background:repeating-linear-gradient(90deg,var(--color-dark-gray) 0 3px,transparent 3px 6px);}
#legend i.acc{background:#2563eb;}

/* ===== 控制区（紧凑行，均分剩余高度） ===== */
#controls{flex:1;display:flex;flex-direction:column;justify-content:space-evenly;padding:2px 10px;min-height:0;}
.row{display:flex;align-items:center;gap:8px;border-top:1px solid rgba(58,65,67,.55);padding:5px 0;}
.row:first-child{border-top:none;}
.row-lb{flex:0 0 46px;font-size:11px;color:var(--color-dark-gray);}
.row-lb small{display:block;font-size:8px;color:#5c666a;}
.seg{flex:1;display:flex;background:rgba(0,0,0,.35);border-radius:7px;padding:2px;gap:2px;min-width:0;}
.seg button{flex:1;border:none;background:transparent;color:var(--color-dark-gray);font-size:11px;padding:6px 1px;border-radius:5px;cursor:pointer;line-height:1.2;min-width:0;}
.seg button.on{background:rgba(75,208,252,.18);color:var(--color-selected);}
.seg button small{display:block;font-size:8px;opacity:.75;}
.pills{flex:1;display:flex;gap:4px;}
.pills button{flex:1;min-width:0;padding:6px 0;border:1px solid var(--color-divider);border-radius:6px;background:transparent;color:var(--color-lite-gray);font-size:12px;cursor:pointer;}
.pills button.on{border-color:var(--color-selected);color:var(--color-selected);background:rgba(75,208,252,.1);}
.duo{flex:1;display:flex;gap:8px;min-width:0;}
.duo .grp{flex:1;min-width:0;}
.grp-lb{font-size:9px;color:#5c666a;margin-bottom:3px;}
.tag-warn{font-size:8px;color:var(--warn);}

/* 警示条 / 依据 / 免责 */
#warnbar{display:none;background:rgba(240,163,94,.12);border:1px solid rgba(240,163,94,.4);color:var(--warn);font-size:10px;border-radius:7px;padding:5px 8px;margin:0 10px 4px;line-height:1.45;}
#warnbar.show{display:block;}
#explain{flex:0 0 auto;margin:0 10px 4px;background:var(--bg-card);border-radius:8px;padding:5px 10px;}
#explain summary{font-size:10px;color:var(--color-dark-gray);cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;}
#explain summary::after{content:"▾";}
#explain[open] summary::after{content:"▴";}
#explain ol{margin:6px 0 2px 14px;font-size:10px;color:var(--color-dark-gray);line-height:1.8;}
#explain ol b{color:var(--color-lite-gray);font-weight:normal;}
#explain .src{color:#5c666a;font-size:9px;}
#disclaimer{flex:0 0 auto;font-size:8.5px;color:#4a5254;line-height:1.55;text-align:center;padding:2px 14px 8px;}

/* ============================================================
 * 解读 / 科普 / 设置 Tab（轻量静态页，允许纵向滚动）
 * ============================================================ */
.scroll{flex:1;min-height:0;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:10px 12px 12px;}
.card{background:var(--bg-card);border-radius:8px;padding:10px 12px;margin-bottom:8px;}
.card h3{font-size:12px;font-weight:normal;color:var(--color-selected);margin-bottom:6px;}
.card p{font-size:11px;color:var(--color-dark-gray);line-height:1.7;}
.card p + p{margin-top:5px;}
.card p b{color:var(--color-lite-gray);font-weight:normal;}
.card ol{margin:4px 0 2px 16px;font-size:10.5px;color:var(--color-dark-gray);line-height:1.85;}
.card ol b{color:var(--color-lite-gray);font-weight:normal;}
.card .src{color:#5c666a;font-size:9px;}

/* 解读 Tab · 当前推荐概览 */
.recap{display:flex;align-items:baseline;justify-content:center;gap:10px;padding:6px 0 2px;}
.recap .rp{display:flex;align-items:baseline;gap:4px;}
.recap .rp span{font-size:10px;color:var(--color-dark-gray);}
.recap .rp b{font-size:26px;font-weight:300;color:var(--color-selected);}
.recap .rp i{font-style:normal;font-size:9px;color:var(--color-dark-gray);}
.recap-sub{text-align:center;font-size:9.5px;color:#5c666a;line-height:1.6;margin-top:2px;}

/* 设置 Tab */
.set-row{display:flex;align-items:center;gap:8px;}
.set-row .row-lb{flex:0 0 60px;}
.btn-reset{
  width:100%;padding:8px 0;border:1px solid rgba(240,163,94,.5);border-radius:7px;
  background:rgba(240,163,94,.08);color:var(--warn);font-size:12px;cursor:pointer;
}
.btn-reset:active{background:rgba(240,163,94,.2);}
.ver{font-size:9.5px;color:#5c666a;line-height:1.8;text-align:center;}