/* ============================================================
   KINK VIALS — NEON GLASS
   ------------------------------------------------------------
   Direction (from gen-design.sh, ART DIRECTION "暗夜霓虹"):
   near-black cool ground; the liquid glows from within and throws
   a pool of colour on the surface below; the shelf stands on a wet
   faintly reflective floor; everything else is dark and quiet, so
   the shelf reads as a lit display case in an unlit room.
   Glow belongs to the liquid and the vial edges ONLY — type,
   buttons and chrome stay crisp and unlit.
   ============================================================ */

:root{
  /* ---- ground ---- */
  --bg:#0a0e1a;
  --bg2:#0d1220;
  --panel:#111726;
  --panel2:#161d30;
  --line:#1e2740;
  --line2:#2a3556;
  --empty:#2b3454;   /* unrated vial outline */

  /* ---- type ---- */
  --text:#eef0f7;
  --dim:#8b95b5;
  --dim2:#5a648a;

  /* ---- five score bands: 0 keeps red to itself, 1→100 runs blue→lime ---- */
  --b0:#e5484d;   /* 0        hard no — the only red on the page */
  --b1:#6a7de8;   /* 1–33     */
  --b2:#2fc2b3;   /* 34–66    */
  --b3:#52c96a;   /* 67–99    */
  --b4:#b3f04a;   /* 100      full to the neck, glows brightest */

  --accent:#b3f04a;
  --accent-ink:#0a0e1a;

  --display:-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,monospace;
  --r:10px;
  --maxw:1200px;

  /* 正文行长。em 随字号走，且一个汉字 = 1em、拉丁字母平均 ≈0.5em，
     所以同一个值对中英都成立：36em ≈ 36 汉字 ≈ 72 字符，两边都在
     45–75 字符 / 25–40 汉字 的舒适区里。
     绝对不要用 ch —— ch 量的是拉丁字体里 "0" 的宽度，对中文毫无意义
     （44ch 在中文下只有 28 个字，正文会被挤成一条窄带）。 */
  --column:min(1100px, 100%); /* 容器宽度，不是正文行长；ch 在中文字体里只有半个 em，
                                 min(72ch) 在 1440 屏上会塌成 ~590px */
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font:400 16px/1.65 var(--display);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg{max-width:100%}
button,input{font-family:inherit}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 26px}
.narrow{max-width:var(--column);margin-left:auto;margin-right:auto}

/* mono label used everywhere a small caption is needed */
.kicker{
  font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--dim2);display:flex;align-items:center;gap:10px;
}
.kicker::after{content:"";flex:1;height:1px;background:var(--line)}
.kicker b{color:var(--accent);font-weight:400}

/* ============================================================ age gate */
#gate{
  position:fixed;inset:0;z-index:300;padding:22px;
  background:rgba(5,7,14,.965);backdrop-filter:blur(7px);
  display:flex;align-items:center;justify-content:center;
}
#gate.off{display:none}
#gate .card{
  max-width:450px;width:100%;background:var(--panel);
  border:1px solid var(--line2);border-radius:14px;padding:34px 30px;text-align:center;
  box-shadow:0 30px 90px rgba(0,0,0,.6);
}
#gate .mark{width:48px;height:48px;margin:0 auto 16px;display:block}
#gate .wm{font-family:var(--mono);letter-spacing:.32em;font-size:11.5px;color:var(--dim);margin-bottom:22px}
#gate p{margin:0 0 6px;font-size:17px}
#gate p.sub{color:var(--dim);font-size:14.5px;margin-bottom:24px}
#gate .row2{display:flex;gap:10px}
#gate .row2 button{flex:1}
#gate .fine{margin-top:20px;font-size:12px;color:var(--dim2)}
#gate .fine a{color:var(--dim)}

/* ============================================================ chrome */
header{
  position:sticky;top:0;z-index:40;
  background:rgba(10,14,26,.82);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.head{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0}
.brand{display:flex;align-items:center;gap:11px;color:var(--text);text-decoration:none}
.brand:hover{text-decoration:none}
.brand svg{width:26px;height:26px;flex:none}
.brand span{font-family:var(--mono);letter-spacing:.28em;font-size:12.5px;white-space:nowrap}
nav.top{display:flex;gap:24px;font-size:13.5px;align-items:center}
nav.top a{color:var(--dim)}
nav.top a:hover{color:var(--text);text-decoration:none}
nav.top a[aria-current="page"]{color:var(--text)}
nav.top a.lang{font-family:var(--mono);font-size:11px;letter-spacing:.14em;border:1px solid var(--line2);border-radius:4px;padding:4px 9px}
nav.top a.lang:hover{border-color:var(--accent);color:var(--accent)}
.trust{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;color:var(--dim2);
  border-bottom:1px solid var(--line);padding:8px 0;text-transform:uppercase;
}

/* ============================================================ hero */
.hero{position:relative;padding:76px 0 64px;overflow:hidden}
.hero::before{
  content:"";position:absolute;width:920px;height:920px;right:-260px;top:-420px;
  border-radius:50%;pointer-events:none;
  background:radial-gradient(closest-side,rgba(179,240,74,.10),transparent 72%);
}
.hero::after{
  content:"";position:absolute;width:760px;height:760px;left:-280px;bottom:-460px;
  border-radius:50%;pointer-events:none;
  background:radial-gradient(closest-side,rgba(106,125,232,.11),transparent 72%);
}
.herogrid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;position:relative}
h1.big{
  font-size:clamp(38px,5.4vw,68px);line-height:1.03;letter-spacing:-.028em;
  font-weight:700;margin:18px 0 0;
}
h1.big em{font-style:normal;color:var(--accent)}
.lede{font-size:clamp(17px,1.5vw,20px);color:var(--dim);margin:20px 0 0}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px;align-items:center}
.meta-line{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;color:var(--dim2);margin-top:20px}

/* the display case: a specimen rack, not a mirror floor */
.case{position:relative;padding:6px 0 0}
.caseshelf{
  display:grid;grid-template-columns:repeat(5,1fr);gap:0 4px;align-items:end;
  position:relative;z-index:2;padding:0 16px;
}
.caseshelf .v{position:relative}
.caseshelf .v svg{display:block;width:100%;max-width:66px;margin:0 auto}
/* the rail the vials sit in — reads as apparatus, not furniture */
.rail{
  position:relative;height:16px;margin-top:-9px;z-index:1;
  border:1px solid var(--line2);border-radius:5px;
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,0) 70%),var(--panel);
}
.rail::after{
  content:"";position:absolute;left:8%;right:8%;top:-15px;height:34px;border-radius:50%;
  background:radial-gradient(closest-side,rgba(255,255,255,.05),transparent 72%);
  pointer-events:none;
}
.caselabel{
  display:flex;justify-content:space-between;gap:12px;margin-top:14px;
  font-family:var(--mono);font-size:10px;letter-spacing:.18em;color:var(--dim2);
  text-transform:uppercase;
}

/* ============================================================ buttons */
.btn{
  border:0;border-radius:8px;padding:13px 26px;font-size:15px;font-weight:700;
  cursor:pointer;background:var(--accent);color:var(--accent-ink);
  letter-spacing:.01em;display:inline-flex;align-items:center;gap:9px;
  text-decoration:none;
}
.btn:hover{filter:brightness(1.08);text-decoration:none}
.btn:disabled{background:#222b45;color:#5c6588;cursor:not-allowed;filter:none}
.btn.line{background:transparent;color:var(--accent);border:1px solid rgba(179,240,74,.45)}
.btn.line:disabled{background:transparent;border-color:var(--line2);color:#5c6588}
.btn.ghost{background:transparent;border:1px solid var(--line2);color:var(--dim);font-weight:400;font-size:13.5px;padding:11px 17px}
.btn.ghost:hover{color:var(--text);border-color:#3a4670}
.btn.sm{padding:9px 16px;font-size:13.5px}

/* ============================================================ sections */
section.band{padding:64px 0;border-top:1px solid var(--line)}
section.band.tight{padding:44px 0}
h2.sec{font-size:clamp(25px,2.7vw,34px);line-height:1.15;letter-spacing:-.018em;
       font-weight:700;margin:16px 0 0}
h3.sub{font-size:19px;font-weight:600;margin:0 0 8px;letter-spacing:-.01em}
.prose{color:#c3c9dd;font-size:16.5px}
/* No second cap here. The wrapper decides the width; capping <p> as well was
   stacking two limits and leaving a thin strip on a wide screen. */
.prose p{margin:0 0 17px}
.prose p:last-child{margin-bottom:0}
.prose strong{color:var(--text)}

/* three-up explainer */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:34px}
.step{border:1px solid var(--line);border-radius:var(--r);padding:22px;background:var(--bg2);position:relative}
.step .no{font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--accent);margin-bottom:12px}
.step p{margin:0;color:var(--dim);font-size:14.5px}

/* band legend as a real spec strip */
.bandstrip{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin-top:30px}
.bandstrip div{border:1px solid var(--line);border-radius:8px;padding:14px;background:var(--bg2)}
.bandstrip i{display:block;height:5px;border-radius:3px;margin-bottom:11px}
.bandstrip b{font-family:var(--mono);font-size:13px;font-weight:400;display:block;color:var(--text)}
.bandstrip span{font-size:12.5px;color:var(--dim2);display:block;margin-top:3px;line-height:1.45}

/* ============================================================ test cards */
.tests{display:grid;grid-template-columns:repeat(auto-fill,minmax(232px,1fr));gap:14px;
       margin:28px 0 0;padding:0;list-style:none}
.t{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r);
  padding:18px 19px;cursor:pointer;position:relative;overflow:hidden;
  transition:border-color .16s,transform .16s;text-decoration:none;color:inherit;display:block;
}
.t:hover{border-color:var(--line2);transform:translateY(-2px);text-decoration:none}
.t.on{border-color:rgba(179,240,74,.5);background:var(--panel2)}
.t.cust{border-style:dashed}
.t .nm{font-size:17px;font-weight:700;display:flex;align-items:center;gap:8px;letter-spacing:-.01em}
.t .cz{font-family:var(--mono);font-size:9.5px;font-weight:400;color:var(--b2);letter-spacing:.14em;
       border:1px solid rgba(47,194,179,.5);border-radius:3px;padding:2px 6px}
.t .bl{font-size:13.5px;color:var(--dim2);margin-top:6px;min-height:2.9em;line-height:1.5}
.t .mt{display:flex;align-items:center;gap:10px;margin-top:14px}
.t .track{flex:1;height:4px;background:#1c2439;border-radius:2px;overflow:hidden}
.t .track i{display:block;height:100%;background:var(--accent);border-radius:2px;transition:width .2s}
.t .n{font-family:var(--mono);font-size:11px;color:var(--dim2);flex:none}

/* ============================================================ the shelf (app) */
.rackhd{display:flex;align-items:flex-end;justify-content:space-between;gap:14px;
        flex-wrap:wrap;padding:8px 0 0}
.rackhd h2{margin:0;font-size:22px;font-weight:700;letter-spacing:-.015em}
.rackhd h2 small{font-family:var(--mono);font-size:12px;color:var(--dim2);font-weight:400;margin-left:10px}
.legend{display:flex;gap:14px;font-size:12px;font-family:var(--mono);flex-wrap:wrap}
.lg{display:flex;align-items:center;gap:6px;color:var(--dim)}
.lg i{width:10px;height:10px;border-radius:50%;display:block}

.rack{
  display:grid;grid-template-columns:repeat(12,1fr);gap:20px 4px;
  padding:24px 16px 18px;margin-top:16px;position:relative;
  background:
    radial-gradient(120% 90% at 50% 0%,rgba(255,255,255,.028),transparent 68%),
    var(--bg2);
  border:1px solid var(--line);border-top-left-radius:var(--r);border-top-right-radius:var(--r);
}
.bcell{text-align:center;position:relative}
.bcell svg{width:100%;max-width:40px;height:auto;margin:0 auto;display:block;position:relative;z-index:2}
/* the pool of colour the liquid throws on the surface below */
.bcell::after{
  content:"";position:absolute;left:50%;bottom:20px;transform:translateX(-50%);
  width:112%;height:14px;border-radius:50%;z-index:1;pointer-events:none;
  background:radial-gradient(closest-side,var(--pool,transparent),transparent 76%);
  opacity:var(--poolop,0);transition:opacity .25s;
}
/* 35 items land on 3 rows (desktop) / 5 rows (phone), so the label has to
   survive at a small size: clamp to two lines rather than pushing rows apart. */
.bcell .nm{
  font-size:10px;margin-top:6px;line-height:1.25;color:var(--dim2);overflow-wrap:anywhere;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  min-height:2.5em;
}
.bcell.done .nm{color:var(--dim)}
.bcell.flash svg{animation:pop .34s ease}
@keyframes pop{0%{transform:scale(1)}44%{transform:scale(1.14)}100%{transform:scale(1)}}
/* wet shelf edge under the rack */
.shelfedge{
  height:26px;margin-bottom:14px;border:1px solid var(--line);border-top:0;
  border-bottom-left-radius:var(--r);border-bottom-right-radius:var(--r);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,0) 78%),var(--bg2);
}

/* result bar */
.resbar{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:18px 22px;background:var(--panel2);border:1px solid var(--line2);border-radius:var(--r);
}
.resl{display:flex;align-items:center;gap:15px;flex:1;min-width:250px;flex-wrap:wrap}
.rest{font-family:var(--mono);font-size:11.5px;letter-spacing:.18em;color:var(--dim)}
.resl .track{flex:1;height:7px;background:#1c2439;border-radius:4px;overflow:hidden;min-width:120px;max-width:300px}
.resl .track i{display:block;height:100%;background:var(--accent);border-radius:4px;transition:width .25s}
.resn{font-family:var(--mono);font-size:13px;color:var(--dim)}
.resn b{color:var(--text);font-weight:400}
.resr{display:flex;gap:10px}

/* ============================================================ scoring list */
.listhd{display:flex;align-items:baseline;justify-content:space-between;gap:12px;
        margin:44px 0 6px;flex-wrap:wrap}
.row{
  display:grid;grid-template-columns:58px 22px minmax(0,1fr) 320px;gap:14px;
  align-items:center;padding:8px 8px;border-bottom:1px solid var(--line);
}
.row:hover{background:#0e1424}
.row.done{background:#0d1322}
.idx{font-family:var(--mono);font-size:11.5px;color:var(--dim2)}
.rb{width:20px;height:57px;display:flex;align-items:center}
.rb svg{display:block;width:100%;height:100%}
.opt{font-size:15px}
.opt a{color:var(--text);text-decoration:none;border-bottom:1px solid var(--line2)}
.opt a:hover{color:var(--accent);border-color:var(--accent);text-decoration:none}
.opt .del{border:0;background:transparent;color:var(--dim2);cursor:pointer;font-size:13px;padding:0 5px;margin-left:5px}
.opt .del:hover{color:var(--b0)}

/* slider FIRST, then the hard-no ✕, then the number */
.ctl{display:grid;grid-template-columns:1fr 32px 42px;gap:12px;align-items:center}
.sl{
  -webkit-appearance:none;appearance:none;width:100%;height:8px;border-radius:4px;
  background:linear-gradient(to right,
    var(--c) 0%, var(--c) calc(var(--p,0) * 1%),
    #1c2439 calc(var(--p,0) * 1%), #1c2439 100%);
  outline:none;cursor:pointer;
}
.sl::-webkit-slider-thumb{
  -webkit-appearance:none;width:18px;height:18px;border-radius:50%;
  background:var(--c);cursor:pointer;border:2px solid var(--bg);
  box-shadow:0 0 0 1px var(--c),0 0 14px var(--glow,transparent);
}
.sl::-moz-range-thumb{
  width:16px;height:16px;border-radius:50%;background:var(--c);
  border:2px solid var(--bg);cursor:pointer;box-shadow:0 0 14px var(--glow,transparent);
}
.sl:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
.zero{
  width:32px;height:32px;border:1px solid var(--line2);background:transparent;
  color:#6d7799;border-radius:6px;cursor:pointer;font-size:14px;line-height:1;padding:0;
}
.zero:hover{color:var(--b0);border-color:var(--b0)}
.zero.on{color:#fff;background:var(--b0);border-color:var(--b0)}
.sc{font-family:var(--mono);font-size:14px;text-align:right}

.addbar{display:flex;gap:9px;padding:18px 8px;flex-wrap:wrap}
.addbar input{
  flex:1;min-width:220px;background:var(--panel);border:1px solid var(--line2);
  color:var(--text);border-radius:7px;padding:11px 13px;font-size:14.5px;
}
.addbar input:focus{outline:none;border-color:rgba(179,240,74,.5)}

/* sticky foot */
#list{padding-bottom:8px}
.foot{position:sticky;bottom:0;z-index:20;
      background:linear-gradient(transparent,var(--bg) 34%);padding:26px 0 18px;margin-top:12px}
.footin{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  background:rgba(17,23,38,.94);backdrop-filter:blur(9px);
  border:1px solid var(--line2);border-radius:var(--r);padding:13px 17px;
}
.pg{display:flex;align-items:center;gap:13px;flex:1;min-width:210px}
.pg .track{flex:1;height:6px;background:#1c2439;border-radius:3px;overflow:hidden;max-width:340px}
.pg .track i{display:block;height:100%;background:var(--accent);border-radius:3px;transition:width .25s}
.pg span{font-family:var(--mono);font-size:12.5px;color:var(--dim);flex:none}
.pg span b{color:var(--text);font-weight:400}
.acts{display:flex;gap:9px;align-items:center;flex-wrap:wrap}
.hint{font-size:12.5px;color:var(--dim2)}

/* ============================================================ FAQ */
.faq{margin-top:30px;border-top:1px solid var(--line)}
@media(min-width:1000px){
  /* fill the desktop width instead of running one long column down the middle */
  .faq{display:grid;grid-template-columns:1fr 1fr;column-gap:34px;
       border-top:0;align-items:start}
  .faq>details{border-top:1px solid var(--line)}
}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  cursor:pointer;padding:19px 44px 19px 0;font-size:16.5px;font-weight:600;
  position:relative;list-style:none;letter-spacing:-.005em;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";position:absolute;right:8px;top:17px;font-family:var(--mono);
  font-size:20px;color:var(--accent);font-weight:400;line-height:1;
}
.faq details[open] summary::after{content:"–"}
.faq summary:hover{color:var(--accent)}
.faq .a{padding:0 44px 21px 0;color:#b8bfd4;font-size:15.5px}

/* ============================================================ glossary */
.crumbs{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--dim2);
        padding:22px 0 0;text-transform:uppercase}
.crumbs a{color:var(--dim)}
.crumbs span{margin:0 8px;opacity:.5}
.entryhd{padding:14px 0 8px}
.entryhd h1{font-size:clamp(30px,4vw,48px);line-height:1.08;letter-spacing:-.024em;margin:10px 0 0;font-weight:700}
.aka{font-family:var(--mono);font-size:12px;color:var(--dim2);margin-top:14px;letter-spacing:.06em}
.callout{
  border:1px solid var(--line2);border-left:3px solid var(--accent);
  border-radius:0 8px 8px 0;padding:17px 19px;margin:26px 0;background:var(--bg2);
}
.callout .kicker{margin-bottom:9px}
.callout p{margin:0;color:#c3c9dd;font-size:15.5px}
.callout.warn{border-left-color:var(--b0)}
.callout.warn .kicker b{color:var(--b0)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;padding:0;list-style:none}
.chips a{
  display:inline-block;border:1px solid var(--line2);border-radius:20px;padding:7px 15px;
  font-size:13.5px;color:var(--dim);text-decoration:none;
}
.chips a:hover{color:var(--text);border-color:#3a4670;text-decoration:none}
.itemindex{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:2px 22px;
           margin:22px 0 0;padding:0;list-style:none}
.itemindex li{border-bottom:1px solid var(--line)}
.itemindex a{display:flex;justify-content:space-between;gap:10px;padding:10px 2px;
             color:var(--dim);font-size:14px;text-decoration:none}
.itemindex a:hover{color:var(--accent);text-decoration:none}
.itemindex .n{font-family:var(--mono);font-size:11px;color:var(--dim2)}

/* ============================================================ modals */
.modal{position:fixed;inset:0;background:rgba(4,6,13,.93);display:none;
       align-items:center;justify-content:center;padding:20px;z-index:100}
.modal.on{display:flex}
.modal .box{
  background:var(--panel);border:1px solid var(--line2);border-radius:14px;
  padding:18px;max-height:92vh;overflow:auto;text-align:center;max-width:600px;
  box-shadow:0 30px 90px rgba(0,0,0,.6);
}
.modal canvas{max-width:min(420px,74vw);height:auto;border:1px solid var(--line);border-radius:6px}
.modal .acts{justify-content:center;margin-top:14px}
.modal .note{font-size:12.5px;color:var(--dim2);margin:12px 0 0}

/* ============================================================ footer */
footer{border-top:1px solid var(--line);margin-top:60px;padding:44px 0 54px;
       color:var(--dim2);font-size:13.5px;background:var(--bg2)}
.fcols{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:30px}
.fcols h4{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;color:var(--dim2);
          text-transform:uppercase;margin:0 0 13px;font-weight:400}
.fcols ul{list-style:none;padding:0;margin:0}
.fcols li{margin-bottom:8px}
.fcols a{color:var(--dim)}
.fbot{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
      margin-top:38px;padding-top:20px;border-top:1px solid var(--line);font-size:12.5px}
.fbot .dom{font-family:var(--mono);letter-spacing:.1em}
.fbrand{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.fbrand svg{width:22px;height:22px}
.fbrand span{font-family:var(--mono);letter-spacing:.26em;font-size:11.5px;color:var(--text)}

/* ============================================================ responsive */
@media(max-width:1000px){
  .rack{grid-template-columns:repeat(10,1fr)}
  .herogrid{grid-template-columns:1fr;gap:40px}
  .fcols{grid-template-columns:1fr 1fr;gap:26px}
  .steps{grid-template-columns:1fr}
  .bandstrip{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:900px){
  .rack{grid-template-columns:repeat(9,1fr);gap:18px 3px}
  .row{grid-template-columns:46px 22px minmax(0,1fr);gap:9px}
  .ctl{grid-column:1/-1;margin-top:6px;grid-template-columns:1fr 34px 42px}
  .sl{height:11px}
  .sl::-webkit-slider-thumb{width:24px;height:24px}
  .zero{width:34px;height:34px}
  section.band{padding:48px 0}
  .hero{padding:48px 0 40px}
}
@media(max-width:560px){
  /* seven across → 35 items in five rows on a phone */
  .rack{grid-template-columns:repeat(7,1fr);gap:14px 2px;padding:18px 10px 14px}
  .bcell svg{max-width:30px}
  .bcell .nm{font-size:8.5px;margin-top:4px;line-height:1.2}
  .bcell::after{height:10px}
  .tests{grid-template-columns:1fr}
  .caseshelf,.floor .refl{grid-template-columns:repeat(4,1fr)}
  .bandstrip{grid-template-columns:1fr}
  nav.top{gap:15px;font-size:12.5px}
  .brand span{letter-spacing:.2em;font-size:11px}
  .wrap{padding:0 18px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* home "how to use it": three columns across the full container. The old markup
   used .prose.narrow, which stacked two caps — min(72ch) on the box and
   --measure on every <p> — and left a thin centred strip on a wide screen. */
.howcols{list-style:none;margin:30px 0 0;padding:0;
         display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.howcols li{padding:22px 24px 24px;background:var(--panel2);
            border:1px solid var(--line2);border-radius:var(--r)}
.howcols .no{font-family:var(--mono);font-size:11px;letter-spacing:.2em;
             color:var(--accent);margin-bottom:12px}
.howcols h3{margin:0 0 10px;font-size:17px;font-weight:700;letter-spacing:-.01em}
.howcols p{margin:0;font-size:15px;line-height:1.85;color:var(--dim);max-width:none}
@media(max-width:900px){.howcols{grid-template-columns:1fr;gap:16px}}

/* ============================================================ rich content blocks
   Used by the how-it-works page and every glossary entry. All of it is real
   text with the layout doing the explaining — nothing here is an image, so it
   indexes and it survives a stylesheet failing to load. */

/* jump nav under a long page's h1 */
.jump{display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px;margin-top:26px;
      padding-top:18px;border-top:1px solid var(--line)}
.jump span{font-family:var(--mono);font-size:11px;letter-spacing:.18em;color:var(--dim2);
           text-transform:uppercase;margin-right:4px}
.jump a{font-size:13.5px;color:var(--dim);text-decoration:none;padding:5px 12px;
        border:1px solid var(--line2);border-radius:999px;transition:.16s}
.jump a:hover{color:var(--text);border-color:var(--accent)}

/* four-node flowchart — a numbered column of nodes joined by a rail. The rail
   is drawn on the list, not between items, so it never breaks on wrap. */
.flowchart{list-style:none;margin:34px 0 0;padding:0;position:relative;
           display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.flowchart::before{content:"";position:absolute;left:34px;right:34px;top:26px;height:2px;
                   background:linear-gradient(90deg,var(--b1),var(--b3));opacity:.45}
.fnode{position:relative;background:var(--panel2);border:1px solid var(--line2);
       border-radius:var(--r);padding:18px 18px 20px}
.fno{position:relative;z-index:2;width:38px;height:38px;margin:-32px 0 14px;
     display:grid;place-items:center;border-radius:50%;
     background:var(--bg2);border:1.6px solid var(--b3);
     font-family:var(--mono);font-size:13px;font-weight:700;color:var(--text)}
.fbody h3{margin:0 0 8px;font-size:16.5px;font-weight:700;letter-spacing:-.01em}
.fbody p{margin:0;font-size:14px;line-height:1.75;color:var(--dim)}
.fnode::after{content:"→";position:absolute;right:-13px;top:24px;z-index:3;
              font-size:15px;color:var(--b3);opacity:.75;line-height:1}
.fnode:last-child::after{content:none}

/* annotated cutaway of a vial + its numbered key */
.anat{display:grid;grid-template-columns:minmax(280px,420px) 1fr;gap:34px;
      align-items:center;margin-top:34px}
.anatfig{margin:0;padding:18px;background:var(--bg2);border:1px solid var(--line);
         border-radius:var(--r)}
.anatsvg{width:100%;height:auto;display:block}
.anatkeys{list-style:none;counter-reset:ak;margin:0;padding:0}
.anatkeys li{counter-increment:ak;position:relative;padding:0 0 16px 44px;margin-bottom:16px;
             border-bottom:1px solid var(--line)}
.anatkeys li:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.anatkeys li::before{content:counter(ak,decimal-leading-zero);position:absolute;left:0;top:-1px;
  width:28px;height:28px;display:grid;place-items:center;border-radius:50%;
  border:1.4px solid var(--b3);background:var(--bg2);
  font-family:var(--mono);font-size:11.5px;font-weight:700;color:var(--text)}
.anatkeys b{display:block;font-size:15px;margin-bottom:4px}
.anatkeys span{display:block;font-size:14px;line-height:1.75;color:var(--dim)}

/* "ask yourself in this order" ladder */
.decision{list-style:none;margin:30px 0 0;padding:0;
          border:1px solid var(--line2);border-radius:var(--r);overflow:hidden}
.decision li{display:grid;grid-template-columns:1fr 34px minmax(150px,190px);
             align-items:center;gap:10px;padding:15px 18px;background:var(--panel2)}
.decision li+li{border-top:1px solid var(--line)}
.decision .q{font-size:15px;line-height:1.6}
.decision .arw{text-align:center;color:var(--dim2)}
.decision .a{font-family:var(--mono);font-size:13px;color:var(--text);
             padding:7px 12px;border:1px solid var(--line2);border-radius:8px;text-align:center}
.decision li:first-child .a{border-color:var(--b0);color:var(--b0)}
.decision li:last-child .a{border-color:var(--b4);color:var(--b4)}

/* generic data table (band table, comparison table) */
.tscroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.dtable{width:100%;border-collapse:collapse;margin-top:26px;font-size:14.5px}
.dtable th,.dtable td{text-align:left;vertical-align:top;padding:14px 16px;
                      border-bottom:1px solid var(--line);line-height:1.7}
.dtable thead th{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;
                 text-transform:uppercase;color:var(--dim2);font-weight:600;
                 border-bottom:1px solid var(--line2)}
.dtable tbody th{font-weight:700;color:var(--text);white-space:nowrap}
.dtable td{color:var(--dim)}
.dtable .ours{color:var(--text)}
.dtable thead .ours{color:var(--accent)}
.cmp{min-width:640px}
.cmp tbody td.ours{background:rgba(255,255,255,.028)}
.bandtable{margin-top:22px}
.bandtable .bcellhd{white-space:nowrap;display:flex;align-items:center;gap:9px}
.bandtable .bcellhd i{width:11px;height:11px;border-radius:50%;display:block;flex:none}
.bandtable .bcellhd b{font-family:var(--mono);font-size:13px}

/* glossary entry: quick facts strip */
.quickfacts{margin:26px 0 0;border:1px solid var(--line2);border-radius:var(--r);
            background:var(--panel2);overflow:hidden}
.quickfacts .qhd{font-family:var(--mono);font-size:11px;letter-spacing:.2em;
                 text-transform:uppercase;color:var(--dim2);
                 padding:13px 18px;border-bottom:1px solid var(--line)}
.qrow{display:grid;grid-template-columns:120px 1fr;gap:14px;padding:13px 18px}
.qrow+.qrow{border-top:1px solid var(--line)}
.quickfacts dt{font-size:13px;color:var(--dim2);font-family:var(--mono);letter-spacing:.04em}
.quickfacts dd{margin:0;font-size:14.5px;line-height:1.75;color:var(--text)}

/* glossary entry: what each band means for THIS item */
.scoreguide{margin:38px 0 0;padding:22px 22px 8px;border:1px solid var(--line2);
            border-radius:var(--r);background:var(--panel2)}
.sgrows{list-style:none;margin:16px 0 0;padding:0}
.sgrows li{display:grid;grid-template-columns:88px 1fr;gap:14px;align-items:baseline;
           padding:0 0 14px;margin-bottom:14px;border-bottom:1px solid var(--line)}
.sgrows li:last-child{border-bottom:0}
.sgb{font-family:var(--mono);font-size:12px;font-weight:700;text-align:center;
     padding:5px 0;border-radius:7px;color:var(--c);border:1px solid var(--c);
     background:color-mix(in srgb,var(--c) 12%,transparent)}
.sgt{font-size:14.5px;line-height:1.75;color:var(--dim)}

/* glossary entry: myth → what's actually true */
.myths{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:14px}
.myths li{border:1px solid var(--line2);border-radius:var(--r);padding:16px 18px;
          background:var(--panel2)}
.myths .m{margin:0 0 9px;font-size:15px;font-weight:600;color:var(--text);
          padding-left:26px;position:relative;line-height:1.6}
.myths .m::before{content:"✕";position:absolute;left:0;top:0;color:var(--b0);font-weight:700}
.myths .t{margin:0;font-size:14.5px;line-height:1.78;color:var(--dim)}
.myths .t span{font-family:var(--mono);font-size:11px;letter-spacing:.14em;
               text-transform:uppercase;color:var(--b2);margin-right:9px}

@media(max-width:1000px){
  .flowchart{grid-template-columns:repeat(2,1fr);gap:34px 16px}
  .flowchart::before{content:none}
  .fno{margin:0 0 12px}
  .fnode::after{content:none}
  .anat{grid-template-columns:1fr;gap:26px}
  .anatfig{max-width:420px;margin:0 auto}
}
@media(max-width:560px){
  .flowchart{grid-template-columns:1fr;gap:14px}
  .decision li{grid-template-columns:1fr;gap:8px}
  .decision .arw{display:none}
  .decision .a{justify-self:start;min-width:130px}
  .qrow{grid-template-columns:1fr;gap:4px}
  .sgrows li{grid-template-columns:72px 1fr;gap:11px}
}

/* ============================================================
   THEMES
   Swap the block below by putting data-theme on <html>. Everything
   downstream — vials, sliders, pools, the exported PNG — reads these
   five band values plus the ink set, so a theme is only ever colour.
   ============================================================ */

/* ---------- AMBER APOTHECARY: warm near-black, plum → white-hot ---------- */
html[data-theme="amber"]{
  --bg:#100c09; --bg2:#151009; --panel:#1b140c; --panel2:#221a10;
  --line:#2b2015; --line2:#3b2c1c; --empty:#453522;
  --text:#f6efe2; --dim:#a8967c; --dim2:#7a6a52;
  --b0:#ff3b30;  /* refusal — the only cold-bright red */
  --b1:#7b4a86;  /* plum   */
  --b2:#c05a2a;  /* rust   */
  --b3:#e79a1c;  /* amber  */
  --b4:#ffd84a;  /* gold, white-hot at the neck */
  --accent:#ffd84a; --accent-ink:#100c09;
}

/* ---------- SPECIMEN SHEET: paper ground, ink ramp ---------- */
html[data-theme="paper"]{
  --bg:#f4f1e9; --bg2:#efebe1; --panel:#fbf9f4; --panel2:#f0ece1;
  --line:#dcd6c8; --line2:#c6bfae; --empty:#c3bdae;
  --text:#171a21; --dim:#5d6472; --dim2:#8a8f9c;
  --b0:#c8362f;  /* refusal */
  --b1:#b9c2cf;  /* pale    */
  --b2:#7fa3c0;  /* mid     */
  --b3:#3f6f97;  /* deep    */
  --b4:#163a56;  /* deepest — the ramp darkens as the score rises */
  --accent:#163a56; --accent-ink:#f4f1e9;
}
html[data-theme="paper"] header{background:rgba(244,241,233,.86)}
html[data-theme="paper"] .footin{background:rgba(251,249,244,.94)}
html[data-theme="paper"] .hero::before,
html[data-theme="paper"] .hero::after{display:none}
html[data-theme="paper"] .rail{background:var(--panel)}
html[data-theme="paper"] .rack{background:var(--bg2)}
html[data-theme="paper"] .btn.line{border-color:var(--line2)}
html[data-theme="paper"] .cmp tbody td.ours{background:rgba(0,0,0,.035)}
html[data-theme="paper"] .anatfig{background:var(--panel)}