:root{
    /* Floor Captain palette */
    --navy:#1a2e44;
    --navy-light:#2c4a6e;
    --green:#2ecc71;
    --green-dark:#27ae60;
    --green-light:#eafaf1;
    --cream:#fdfaf5;
    --warm-gray:#f5f0e8;

    /* tire-site variables, remapped to the light theme */
    --bg:var(--cream);
    --panel:#ffffff;
    --panel-2:var(--warm-gray);
    --line:#e3dccd;
    --text:var(--navy);
    --body:#2d3748;
    --muted:#5b6778;

    --lane:var(--green-dark);       /* decorative: stripes, dots, borders */
    --lane-text:#1e8449;            /* green used as text (passes contrast on cream) */
    --warn:#e0a31c;
    --bad:#c0392b;

    /* climate zones, darkened so they read on cream */
    --snow:#2874a6;
    --heat:#b9650c;
    --rain:#17806a;
    --mixed:#8e44ad;

    --radius:16px;
    --shadow:0 4px 24px rgba(26,46,68,0.08);
    --shadow-lg:0 8px 40px rgba(26,46,68,0.14);
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:'Nunito',sans-serif;
    line-height:1.55;
  }
  h1,h2,h3,.display{
    font-family:'Nunito',sans-serif;
    font-weight:900;
    color:var(--navy);
    text-transform:none;
    letter-spacing:-0.01em;
    margin:0;
  }
  .mono{font-family:'Nunito',sans-serif;}
  a{color:inherit;}

  /* lane-line divider, the recurring signature motif */
  .lane{
    height:3px;
    background-image:repeating-linear-gradient(90deg,var(--lane) 0 28px, transparent 28px 52px);
    opacity:0.85;
    width:100%;
  }
  .lane.animated{
    background-size:80px 100%;
    animation:drive 2.4s linear infinite;
  }
  @keyframes drive{ to{ background-position-x:-80px; } }
  @media (prefers-reduced-motion: reduce){ .lane.animated{animation:none;} }

  header{
    background:var(--navy);
    padding:72px max(24px, calc((100% - 920px) / 2 + 24px)) 56px;
  }
  .topnav{
    position:sticky;
    top:0;
    z-index:100;
    background:rgba(253,250,245,0.92);
    backdrop-filter:blur(8px);
    border-bottom:2px solid var(--green-light);
  }
  .topnav-inner{
    max-width:920px;
    margin:0 auto;
    padding:14px 24px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
  }
  .topnav .wordmark{
    display:flex;
    align-items:center;
    gap:9px;
    font-family:'Nunito',sans-serif;
    font-size:19px;
    font-weight:900;
    letter-spacing:-0.3px;
    text-transform:none;
    text-decoration:none;
    color:var(--navy);
    background:none;
    border:none;
    padding:0;
    cursor:pointer;
  }
  .topnav .wordmark .dot{
    width:9px; height:9px; border-radius:50%;
    background:var(--lane);
    flex-shrink:0;
  }
  .topnav .wordmark span{color:var(--lane-text);}
  .topnav .wordmark .home-hint{
    color:var(--muted);
    font-weight:600;
    font-family:'Nunito',sans-serif;
    font-size:11px;
    letter-spacing:0;
    text-transform:none;
    margin-left:2px;
  }
  @media (max-width:480px){ .topnav .wordmark .home-hint{display:none;} }
  .menu-btn{
    display:flex;
    align-items:center;
    gap:8px;
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:50px;
    padding:8px 14px;
    color:var(--text);
    font-family:'Nunito',sans-serif;
    font-size:12px;
    cursor:pointer;
  }
  .menu-btn:hover{border-color:var(--lane);}
  .menu-btn .bars{display:flex; flex-direction:column; gap:3px; width:14px;}
  .menu-btn .bars span{display:block; height:2px; background:var(--text); border-radius:1px;}
  .menu-dropdown{
    position:absolute;
    right:24px;
    top:calc(100% + 8px);
    max-width:920px;
    width:min(320px, calc(100vw - 48px));
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:8px;
    padding:8px;
    box-shadow:0 12px 32px rgba(26,46,68,0.18);
    display:none;
    max-height:70vh;
    overflow-y:auto;
  }
  .topnav-inner{position:relative;}
  .menu-dropdown.open{display:block;}
  .menu-dropdown a{
    display:flex;
    width:100%;
    align-items:center;
    gap:12px;
    padding:10px 12px;
    border-radius:var(--radius);
    text-decoration:none;
    color:var(--muted);
    font-size:14px;
    font-family:'Nunito',sans-serif;
    background:none;
    border:none;
    text-align:left;
    cursor:pointer;
    transition:background .12s ease, color .12s ease;
  }
  .menu-dropdown a:hover{background:var(--panel-2); color:var(--text);}
  .menu-dropdown a.active{color:var(--text); background:var(--panel-2);}
  .menu-dropdown a .mn{
    font-family:'Nunito',sans-serif;
    font-size:11px;
    color:var(--lane-text);
    width:20px;
    flex-shrink:0;
  }
  .eyebrow{
    font-family:'Nunito',sans-serif;
    font-size:13px;
    letter-spacing:0.14em;
    color:var(--lane-text);
    text-transform:uppercase;
    margin-bottom:14px;
  }
  h1{font-size:clamp(36px,6.5vw,60px); line-height:1.1; font-weight:900; color:#fff;}
  header .eyebrow{color:var(--green);}
  header p.sub{
    color:rgba(255,255,255,0.78);
    font-family:'Lora',serif;
    font-style:italic;
    font-size:18px;
    max-width:56ch;
    margin-top:18px;
  }

  section{
    max-width:920px;
    margin:0 auto;
    padding:56px 24px;
  }
  .section-head{display:flex; align-items:baseline; gap:14px; margin-bottom:28px;}
  .section-head .num{font-family:'Nunito',sans-serif; color:var(--muted); font-size:14px;}
  h2{font-size:clamp(24px,4vw,34px);}

  /* region selector — styled like tread blocks */
  .region-picker{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:10px;
    margin-bottom:32px;
  }
  @media (max-width:640px){ .region-picker{grid-template-columns:repeat(2,1fr);} }
  .region-btn{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:10px;
    padding:16px 12px;
    cursor:pointer;
    color:var(--text);
    text-align:left;
    font-family:'Nunito',sans-serif;
    transition:border-color .15s ease, transform .1s ease;
    position:relative;
    overflow:hidden;
  }
  .region-btn:hover{transform:translateY(-2px);}
  .region-btn .tag{
    display:block;
    font-family:'Nunito',sans-serif;
    font-size:11px;
    color:var(--muted);
    margin-bottom:6px;
  }
  .region-btn .name{font-weight:600; font-size:15px;}
  .region-btn::before{
    content:"";
    position:absolute; left:0; top:0; bottom:0; width:4px;
    background:var(--dot,var(--muted));
    opacity:0.5;
  }
  .region-btn[data-region="snow"]{--dot:var(--snow);}
  .region-btn[data-region="heat"]{--dot:var(--heat);}
  .region-btn[data-region="rain"]{--dot:var(--rain);}
  .region-btn[data-region="mixed"]{--dot:var(--mixed);}
  .region-btn.active{border-color:var(--dot,var(--lane));}
  .region-btn.active::before{opacity:1;}

  /* about the author */
  .about-panel{
    max-width:920px;
    margin:0 auto;
    padding:56px 24px;
  }
  .about-card{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:32px;
  }
  .about-head{
    display:flex;
    align-items:center;
    gap:16px;
    margin-bottom:22px;
  }
  .avatar{
    width:52px; height:52px;
    border-radius:50%;
    background:var(--green-dark);
    color:#fff;
    display:flex; align-items:center; justify-content:center;
    font-family:'Nunito',sans-serif;
    font-size:18px;
    font-weight:700;
    flex-shrink:0;
  }
  .about-head .name{font-family:'Nunito',sans-serif; font-size:18px; text-transform:none; letter-spacing:0;}
  .about-head .title{color:var(--muted); font-size:13px; font-family:'Nunito',sans-serif; margin-top:2px;}
  .about-card p{color:var(--body); font-size:14.5px; line-height:1.7; margin:0 0 16px; max-width:64ch;}
  .about-quote{
    border-left:2px solid var(--lane);
    padding-left:16px;
    margin:20px 0;
    font-family:'Nunito',sans-serif;
    font-size:19px;
    font-weight:400;
    text-transform:none;
    letter-spacing:0;
    color:var(--text);
    line-height:1.4;
  }
  .family-examples{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
    gap:14px;
    margin:20px 0 24px;
  }
  .family-card{
    background:var(--panel-2);
    border-radius:10px;
    padding:16px 18px;
  }
  .family-card .route{
    font-family:'Nunito',sans-serif;
    font-size:11px;
    color:var(--lane-text);
    text-transform:uppercase;
    margin-bottom:8px;
  }
  .family-card p{font-size:13.5px; margin:0; color:var(--body); line-height:1.6;}

  .tips-panel{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:28px;
  }
  .tip{
    display:grid;
    grid-template-columns:26px 1fr;
    gap:14px;
    padding:16px 0;
    border-top:1px solid var(--line);
  }
  .tip:first-child{border-top:none; padding-top:4px;}
  .tip .n{font-family:'Nunito',sans-serif; font-size:16px; color:var(--lane-text);}
  .tip p{margin:0; font-size:14.5px; color:var(--body); line-height:1.6;}

  /* parts & tools partner cards */
  .partner-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
    gap:16px;
  }
  .partner-card{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:26px;
    display:flex;
    flex-direction:column;
  }
  .partner-card .kicker{
    font-family:'Nunito',sans-serif;
    font-size:11px;
    letter-spacing:0.08em;
    text-transform:uppercase;
    color:var(--lane-text);
    margin-bottom:10px;
  }
  .partner-card h3{font-size:19px; margin-bottom:10px;}
  .partner-card p{color:var(--body); font-size:14px; line-height:1.65; margin:0 0 20px; flex-grow:1;}
  .partner-card .btn{align-self:flex-start;}
  /* top 10 by zone, from real Tire Rack survey data */
  .top10-tabs{
    display:flex;
    flex-wrap:wrap;
    gap:8px;
    margin-bottom:24px;
  }
  .top10-tab{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:50px;
    padding:8px 16px;
    font-family:'Nunito',sans-serif;
    font-size:12px;
    color:var(--muted);
    cursor:pointer;
    transition:background .15s ease, border-color .15s ease, box-shadow .15s ease, transform .1s ease;
  }
  .top10-tab.active{
    color:var(--bg);
    font-weight:700;
    background:var(--accent-active,var(--lane));
    border-color:var(--accent-active,var(--lane));
    box-shadow:0 0 0 3px color-mix(in srgb, var(--accent-active,var(--lane)) 25%, transparent);
    transform:translateY(-1px);
  }
  .top10-list{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius);
    overflow:hidden;
  }
  .top10-row{
    display:grid;
    grid-template-columns:32px 1fr auto;
    gap:14px;
    align-items:center;
    padding:14px 18px;
    border-top:1px solid var(--line);
    text-decoration:none;
    color:var(--text);
    transition:background .12s ease;
  }
  .top10-row:hover, .top10-row:focus{background:var(--panel-2); outline:none;}
  .top10-row:first-child{border-top:none;}
  .top10-row .rank{font-family:'Nunito',sans-serif; font-size:18px; color:var(--muted);}
  .top10-row .name{font-size:14px;}
  .top10-row .name .brand{color:var(--muted); font-size:12px; display:block; font-family:'Nunito',sans-serif;}
  .top10-row .cta{
    font-family:'Nunito',sans-serif; font-size:11px; text-align:right; white-space:nowrap;
    color:var(--lane-text); display:flex; align-items:center; gap:6px;
  }
  .disclosure{
    background:var(--panel-2);
    border:1px solid var(--line);
    border-left:3px solid var(--lane);
    border-radius:10px;
    padding:14px 16px;
    font-size:12.5px;
    color:var(--muted);
    margin-bottom:20px;
    line-height:1.5;
  }
  .disclosure strong{color:var(--text);}

  .support-panel{
    background:linear-gradient(135deg, var(--panel) 0%, var(--panel-2) 100%);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:26px 28px;
    margin-bottom:28px;
  }
  .support-panel p{
    color:var(--body);
    font-size:14.5px;
    line-height:1.7;
    margin:0 0 18px;
    max-width:64ch;
  }
  .support-panel p:last-of-type{margin-bottom:20px;}
  .support-actions{
    display:flex;
    flex-wrap:wrap;
    gap:12px;
  }
  .btn{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-family:'Nunito',sans-serif;
    font-size:12.5px;
    padding:11px 18px;
    border-radius:50px;
    text-decoration:none;
    border:1px solid var(--line);
    cursor:pointer;
    transition:transform .1s ease, border-color .12s ease;
  }
  .btn:hover{transform:translateY(-1px);}
  .btn-donate{
    background:var(--lane);
    color:var(--bg);
    border-color:var(--lane);
    font-weight:600;
  }
  .btn-secondary{
    color:var(--muted);
    background:none;
  }
  .btn-secondary:hover{color:var(--text); border-color:var(--text);}
  .top10-note{color:var(--muted); font-size:13px; margin-top:16px;}
  .top10-callout{
    background:var(--panel-2);
    border:1px solid var(--line);
    border-left:3px solid var(--accent-cta,var(--lane));
    border-radius:10px;
    padding:18px 20px;
    margin-bottom:20px;
    display:none;
  }
  .top10-callout.show{display:block;}
  .top10-callout .head{
    font-family:'Nunito',sans-serif;
    font-size:15px;
    margin-bottom:8px;
    color:var(--accent-cta,var(--text));
  }
  .top10-callout p{
    font-size:13.5px;
    color:var(--body);
    line-height:1.6;
    margin:0;
  }
  .top10-callout button.inline-jump{
    background:none; border:none; padding:0; margin:0;
    font:inherit; color:var(--accent-cta,var(--lane));
    text-decoration:underline; cursor:pointer;
  }

  .map-wrap{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:20px;
    position:relative;
  }
  .map-legend{
    display:flex;
    flex-wrap:wrap;
    gap:18px;
    margin-bottom:18px;
  }
  .map-legend button{
    display:flex; align-items:center; gap:8px;
    background:none; border:none; color:var(--muted);
    font-family:'Nunito',sans-serif; font-size:12px;
    cursor:pointer; padding:4px 0;
  }
  .map-legend button .sw{width:12px; height:12px; border-radius:3px; display:inline-block;}
  .map-legend button.active{color:var(--text);}
  #usmap{width:100%; height:auto; display:block;}
  #usmap path{
    stroke:var(--bg);
    stroke-width:0.75;
    cursor:pointer;
    transition:opacity .12s ease;
    opacity:0.86;
  }
  #usmap path:hover, #usmap path:focus{opacity:1; outline:none; stroke:var(--text); stroke-width:1.25;}
  #usmap path.selected{stroke:var(--text); stroke-width:1.5; opacity:1;}
  .map-tip{
    position:absolute;
    pointer-events:none;
    background:var(--bg);
    border:1px solid var(--line);
    border-radius:10px;
    padding:6px 10px;
    font-family:'Nunito',sans-serif;
    font-size:12px;
    white-space:nowrap;
    opacity:0;
    transform:translate(-50%,-130%);
    transition:opacity .1s ease;
    z-index:5;
  }
  .map-tip.show{opacity:1;}
  .map-hint{
    color:var(--muted);
    font-size:13px;
    margin-top:14px;
  }

  .result-card{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:28px;
  }
  .result-card .headline{
    display:flex; justify-content:space-between; align-items:flex-start; gap:16px; flex-wrap:wrap;
    margin-bottom:14px;
  }
  .result-card h3{font-size:22px; color:var(--accent,var(--text));}
  .result-card .badge{
    font-family:'Nunito',sans-serif;
    font-size:12px;
    padding:5px 10px;
    border-radius:50px;
    border:1px solid var(--accent,var(--muted));
    color:var(--accent,var(--muted));
    white-space:nowrap;
  }
  .result-card p{color:var(--body); margin:0 0 16px;}
  .spec-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(180px,1fr));
    gap:14px;
    margin-top:18px;
  }
  .spec{
    background:var(--panel-2);
    border-radius:10px;
    padding:12px 14px;
  }
  .spec .k{font-family:'Nunito',sans-serif; font-size:11px; color:var(--muted); text-transform:uppercase;}
  .spec .v{font-size:14px; margin-top:4px;}

  /* sidewall diagram */
  .sidewall{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:28px;
    display:grid;
    grid-template-columns:1fr;
    gap:20px;
  }
  .code-row{
    font-family:'JetBrains Mono',monospace;
    font-size:clamp(18px,4vw,26px);
    display:flex; flex-wrap:wrap; gap:4px; align-items:baseline;
  }
  .code-row span{
    padding:2px 4px;
    border-radius:3px;
  }
  .code-row span.hi{background:rgba(39,174,96,0.14); color:var(--lane-text);}
  .legend{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
    gap:14px;
  }
  .legend div{
    border-left:2px solid var(--lane);
    padding-left:12px;
  }
  .legend .k{font-weight:600; font-size:14px;}
  .legend .v{color:var(--muted); font-size:13px;}

  /* driver's door tire pressure placard */
  .placard-block{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:28px;
    display:grid;
    grid-template-columns:minmax(240px,320px) 1fr;
    gap:28px;
  }
  @media (max-width:640px){ .placard-block{grid-template-columns:1fr;} }
  .placard{
    background:linear-gradient(180deg,#efeee7 0%,#e2e0d6 100%);
    color:#1c1c1a;
    border-radius:3px;
    border:1px solid #b8b5a8;
    padding:16px 18px;
    font-family:'JetBrains Mono',monospace;
    box-shadow:0 6px 16px rgba(26,46,68,0.22);
    align-self:start;
  }
  .placard .ph-title{
    font-size:10px;
    font-weight:700;
    letter-spacing:0.06em;
    text-align:center;
    border-bottom:1px solid #b8b5a8;
    padding-bottom:8px;
    margin-bottom:10px;
  }
  .placard table{width:100%; border-collapse:collapse; font-size:10.5px;}
  .placard th{
    text-align:left;
    font-weight:700;
    padding:5px 4px;
    border-bottom:1px solid #b8b5a8;
  }
  .placard td{padding:5px 4px; border-bottom:1px solid #d3d1c6;}
  .placard .fine{font-size:8.5px; color:#5a584f; margin-top:10px; line-height:1.5;}
  .placard-notes{display:flex; flex-direction:column; gap:16px;}
  .placard-note{border-left:2px solid var(--lane); padding-left:14px;}
  .placard-note .k{font-weight:600; font-size:14px; margin-bottom:4px;}
  .placard-note .v{color:var(--muted); font-size:13.5px; line-height:1.6;}

  /* compound comparison, used inside the family-tips section */
  .compound-compare{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:12px;
    margin-top:14px;
  }
  @media (max-width:520px){ .compound-compare{grid-template-columns:1fr;} }
  .compound-card{
    background:var(--panel-2);
    border-radius:10px;
    padding:14px 16px;
  }
  .compound-card .ck{font-family:'Nunito',sans-serif; font-size:11px; text-transform:uppercase; color:var(--muted); margin-bottom:6px;}
  .compound-card ul{margin:0; padding-left:18px; font-size:13px; color:var(--body); line-height:1.6;}
  .compound-card li{margin-bottom:2px;}

  /* alignment wear-pattern diagram */
  .align-block{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:28px;
    display:grid;
    grid-template-columns:minmax(260px,1fr) 1fr;
    gap:28px;
  }
  @media (max-width:640px){ .align-block{grid-template-columns:1fr;} }
  .wear-diagram{display:flex; gap:14px; flex-wrap:wrap;}
  .wear-tire{flex:1; min-width:130px; text-align:center;}
  .wear-tire .tread-svg{
    width:100%;
    height:82px;
    display:block;
    margin-bottom:8px;
  }
  .wear-tire .label{font-family:'Nunito',sans-serif; font-size:11px; color:var(--muted); line-height:1.5;}
  .wear-tire .label strong{color:var(--text); display:block; font-family:'Nunito',sans-serif; font-size:13px; margin-bottom:2px;}

  /* tread depth gauge */
  .gauge-block{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:28px;
    display:grid;
    grid-template-columns:minmax(220px,300px) 1fr;
    gap:28px;
    margin-top:20px;
  }
  @media (max-width:640px){ .gauge-block{grid-template-columns:1fr;} }
  .gauge-svg{width:100%; height:auto; display:block;}
  .gauge-notes{display:flex; flex-direction:column; gap:16px;}
  .gauge-note{border-left:2px solid var(--lane); padding-left:14px;}
  .gauge-note .k{font-weight:600; font-size:14px; margin-bottom:4px;}
  .gauge-note .v{color:var(--muted); font-size:13.5px; line-height:1.6;}

  /* built-in wear bar diagram */
  .pgauge-block{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:28px;
    margin-top:20px;
    display:grid;
    grid-template-columns:minmax(220px,300px) 1fr;
    gap:28px;
  }
  @media (max-width:640px){ .pgauge-block{grid-template-columns:1fr;} }
  .pgauge-svg{width:100%; height:auto; display:block;}

  .placement-block{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:24px;
    margin-bottom:24px;
  }
  .placement-svg{width:100%; height:auto; display:block; margin-bottom:14px;}
  .placement-legend{
    display:flex;
    flex-wrap:wrap;
    gap:20px;
    font-size:13px;
  }
  .placement-legend .ok{color:var(--rain);}
  .placement-legend .no{color:var(--bad);}
  .placement-legend strong{display:block; font-size:13.5px; color:var(--text); margin-bottom:2px;}
  .placement-legend .item{max-width:280px;}

  .twi-block{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:28px;
    margin-top:20px;
  }
  .twi-diagrams{
    display:flex;
    gap:20px;
    flex-wrap:wrap;
    margin-bottom:22px;
  }
  .twi-diagram{flex:1; min-width:180px; text-align:center;}
  .twi-svg{width:100%; height:auto; display:block; margin-bottom:8px;}
  .twi-diagram .label{font-family:'Nunito',sans-serif; font-size:11px; color:var(--muted); line-height:1.5;}
  .twi-diagram .label strong{color:var(--text); display:block; font-family:'Nunito',sans-serif; font-size:13px; margin-bottom:2px;}
  .photo-placeholder{
    border:1px dashed var(--line);
    border-radius:var(--radius);
    padding:24px;
    text-align:center;
    color:var(--muted);
    font-size:12.5px;
    margin-top:16px;
  }
  .gauge-photo-card{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:16px;
    margin-top:16px;
    text-align:center;
  }
  .gauge-photo-card img{
    width:100%;
    max-width:360px;
    height:auto;
    border-radius:10px;
    display:block;
    margin:0 auto 10px;
  }
  .gauge-photo-card .cap{
    font-family:'Nunito',sans-serif;
    font-size:11.5px;
    color:var(--muted);
  }
  .gauge-photo-card .read-it{
    text-align:left;
    margin-top:18px;
    padding-top:16px;
    border-top:1px solid var(--line);
    display:flex;
    flex-direction:column;
    gap:14px;
  }
  .gauge-photo-card .read-it .gauge-note .k{font-weight:600; font-size:13.5px; margin-bottom:4px; color:var(--text);}
  .gauge-photo-card .read-it .gauge-note .v{color:var(--muted); font-size:13px; line-height:1.6;}
  .gauge-photo-card .digital-note{
    text-align:left;
    margin-top:16px;
    background:var(--panel-2);
    border-radius:10px;
    padding:14px 16px;
    font-size:13px;
    color:var(--muted);
    line-height:1.6;
  }
  .gauge-photo-card .digital-note button.inline-jump{
    background:none; border:none; padding:0; margin:0;
    font:inherit; color:var(--lane-text);
    text-decoration:underline; cursor:pointer;
  }
  .align-notes{display:flex; flex-direction:column; gap:16px;}
  .align-note{border-left:2px solid var(--lane); padding-left:14px;}
  .align-note .k{font-weight:600; font-size:14px; margin-bottom:4px;}
  .align-note .v{color:var(--muted); font-size:13.5px; line-height:1.6;}

  .steps{
    counter-reset:step;
    display:flex; flex-direction:column; gap:0;
  }
  .step{
    display:grid;
    grid-template-columns:56px 1fr;
    gap:18px;
    padding:22px 0;
    border-top:1px solid var(--line);
  }
  .step:first-child{border-top:none;}
  .step .idx{
    font-family:'Nunito',sans-serif;
    font-size:28px;
    color:var(--muted);
  }
  .step h3{font-size:17px; margin-bottom:6px;}
  .step p{color:var(--muted); margin:0; font-size:15px;}

  .penny-gauge{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:24px;
    display:flex;
    align-items:center;
    gap:20px;
    flex-wrap:wrap;
  }
  .penny-gauge .depth-bar{
    flex:1; min-width:220px;
    height:10px;
    border-radius:var(--radius);
    background:linear-gradient(90deg,var(--bad) 0 20%, var(--warn) 20% 55%, var(--rain) 55% 100%);
    position:relative;
  }
  .penny-gauge .label-row{
    display:flex; justify-content:space-between;
    font-family:'Nunito',sans-serif;
    font-size:11px; color:var(--muted);
    margin-top:8px;
  }

  footer{
    background:var(--navy);
    padding:48px max(24px, calc((100% - 920px) / 2 + 24px)) 72px;
    color:rgba(255,255,255,0.68);
    font-size:13px;
  }
  .toc-list{
    display:flex;
    flex-direction:column;
    gap:2px;
  }
  .toc-item{
    display:grid;
    grid-template-columns:32px 1fr auto;
    align-items:center;
    gap:16px;
    padding:18px 4px;
    border-top:1px solid var(--line);
    text-decoration:none;
    color:var(--text);
    transition:background .12s ease, padding-left .12s ease;
  }
  .toc-item:first-child{border-top:none;}
  .toc-item:hover{background:var(--panel-2); padding-left:12px;}
  .toc-item .toc-num{
    font-family:'Nunito',sans-serif;
    font-size:13px;
    color:var(--lane-text);
  }
  .toc-item .toc-body h3{
    font-family:'Nunito',sans-serif;
    text-transform:none;
    letter-spacing:0;
    font-size:16px;
    font-weight:600;
    margin-bottom:3px;
  }
  .toc-item .toc-body p{
    margin:0;
    font-size:13.5px;
    color:var(--muted);
    line-height:1.5;
  }
  .toc-item .toc-arrow{
    font-family:'Nunito',sans-serif;
    color:var(--muted);
    font-size:16px;
  }
  .toc-item:hover .toc-arrow{color:var(--lane-text);}
  footer .lane{margin-bottom:24px;}


  /* soft shadows on the main cards, like the landing page */
  .about-card,.tips-panel,.partner-card,.top10-list,.map-wrap,.result-card,.sidewall,
  .placard-block,.align-block,.gauge-block,.pgauge-block,.placement-block,.twi-block,
  .penny-gauge,.gauge-photo-card,.support-panel{box-shadow:var(--shadow);}
  .about-card{border-color:var(--green-light); border-width:2px;}
  .btn-donate{color:#fff;}