/* =========================================================== Stack & Reach
   Editorial geometry charts: paper, ink, mono numerals, one accent per bike.
   ========================================================================= */

:root {
  --paper: #f2eddf;
  --paper-2: #faf6ea;
  --paper-3: #eae3d1;
  --ink: #161913;
  --ink-soft: #3a3d33;
  --muted: #726c5c;
  --line: #d8cfba;
  --line-strong: #b5aa90;
  --accent: #cc4f24;
  --a: #161913;
  --b: #c94d24;
  --c: #0d756c;
  --d: #6353bd;
  --wash: rgba(22, 25, 19, 0.045);
  --shadow: 0 1px 0 rgba(22, 25, 19, 0.06), 0 18px 40px -32px rgba(22, 25, 19, 0.4);
  --mono: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;
  --r: 3px;
  --wrap: 1240px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(22, 25, 19, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 25, 19, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, black, transparent 70%);
}
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent); }
button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
code { font-family: var(--mono); font-size: 0.92em; background: var(--wash); padding: 1px 4px; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 28px; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip {
  position: absolute; left: 16px; top: -60px; z-index: 100;
  background: var(--ink); color: var(--paper); padding: 10px 14px;
}
.skip:focus { top: 12px; }

/* --------------------------------------------------------------- header */
.site-head {
  position: sticky; top: 0; z-index: 30;
  border-bottom: 1px solid var(--line);
  background: rgba(242, 237, 223, 0.92);
  backdrop-filter: blur(10px);
}
.head-inner { display: flex; align-items: center; gap: 28px; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; flex: 0 0 auto; }
.brand:hover { color: inherit; }
.mark { width: 42px; height: 30px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.wordmark { font-size: 18px; font-weight: 700; letter-spacing: -0.03em; white-space: nowrap; }
.wordmark i { font-family: Georgia, "Times New Roman", serif; font-weight: 400; color: var(--accent); }
.nav { display: flex; gap: 4px; margin-left: auto; }
.nav a {
  padding: 8px 10px; text-decoration: none;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-soft); border-bottom: 2px solid transparent;
}
.nav a:hover { color: var(--ink); }
.nav a.is-active { color: var(--ink); border-bottom-color: var(--accent); }
.head-note {
  flex: 0 0 auto; font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--muted); padding-left: 20px; border-left: 1px solid var(--line);
}

/* ----------------------------------------------------------------- hero */
.view { padding: 0 0 80px; }
.hero { padding: 66px 0 46px; max-width: 980px; }
.eyebrow {
  margin: 0 0 16px; font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent);
}
.hero h1, .page-head h1 {
  margin: 0; font-size: clamp(40px, 6.4vw, 76px); line-height: 0.95;
  letter-spacing: -0.055em; font-weight: 700; max-width: 14ch;
}
.lede {
  max-width: 640px; margin: 24px 0 0; font-size: 19px; line-height: 1.5;
  color: var(--ink-soft); letter-spacing: -0.012em;
}
.hero-meta {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 22px;
  margin-top: 30px; padding-top: 18px; border-top: 1px solid var(--line);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted);
}
.hero-meta strong { color: var(--ink); font-weight: 600; font-size: 13px; }
.hero-meta-note { margin-left: auto; color: var(--muted); }
.page-head { padding: 66px 0 40px; }
.page-head h1 { max-width: 15ch; }

/* --------------------------------------------------------- section heads */
.section-head {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 20px;
  padding: 18px 0 14px; border-top: 2px solid var(--ink); margin-top: 20px;
}
.section-title {
  margin: 0; font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em;
  text-transform: uppercase; font-weight: 600;
}
.section-actions { display: flex; align-items: center; gap: 16px; }
.hint { font-size: 12px; color: var(--muted); }
.panel-num {
  margin: 0 0 6px; font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; color: var(--accent);
}
.panel-note, .panel-intro { margin: 0; font-size: 13px; color: var(--muted); max-width: 420px; }
.panel-intro { margin: 16px 0 0; max-width: 640px; }
.caption { margin: 14px 0 0; font-size: 11.5px; line-height: 1.5; color: var(--muted); }

/* ---------------------------------------------------------------- slots */
.slots {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px; margin: 8px 0 22px;
}
.slot {
  --bike: var(--a);
  position: relative; min-width: 0; padding: 18px 18px 14px;
  background: var(--paper-2); border: 1px solid var(--line); border-top: 3px solid var(--bike);
  box-shadow: var(--shadow);
}
.slot-top { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.slot-letter {
  display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 50%;
  background: var(--bike); color: var(--paper-2); font-family: var(--mono); font-size: 12px; font-weight: 700;
}
.slot-tag {
  font-family: var(--mono); font-size: 9px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--muted);
}
.slot h3 {
  margin: 0; font-size: 16px; line-height: 1.25; letter-spacing: -0.02em; font-weight: 650;
  overflow-wrap: anywhere;
}
.slot h3 span { color: var(--muted); font-weight: 400; }
.slot-size { margin: 5px 0 0; font-family: var(--mono); font-size: 11px; color: var(--ink-soft); }
.slot dl { display: flex; gap: 18px; margin: 14px 0 0; padding-top: 12px; border-top: 1px solid var(--line); }
.slot dl div { display: flex; flex-direction: column; gap: 2px; }
.slot dt { font-family: var(--mono); font-size: 9px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.slot dd { margin: 0; font-family: var(--mono); font-size: 18px; letter-spacing: -0.02em; }
.slot-actions { display: flex; gap: 12px; margin-top: 14px; }
.slot-actions button, .slot-change {
  border: 0; background: none; padding: 0; font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-soft); text-decoration: underline;
  text-underline-offset: 3px;
}
.slot-actions button:hover, .slot-change:hover { color: var(--accent); }
.slot-add {
  display: flex; flex-direction: column; align-items: flex-start; justify-content: center; gap: 6px;
  min-height: 190px; padding: 18px; text-align: left;
  border: 1px dashed var(--line-strong); background: transparent; color: var(--muted);
}
.slot-add:hover { border-color: var(--ink); color: var(--ink); background: var(--wash); }
.slot-add .plus { font-size: 26px; line-height: 1; font-weight: 300; }
.slot-add strong { font-size: 14px; font-weight: 600; letter-spacing: -0.01em; }
.slot-add span:last-child { font-family: var(--mono); font-size: 10px; letter-spacing: 0.04em; }

.bike-0 { --bike: var(--a); }
.bike-1 { --bike: var(--b); }
.bike-2 { --bike: var(--c); }
.bike-3 { --bike: var(--d); }

/* ----------------------------------------------------------- empty state */
.empty {
  margin: 26px 0; padding: 46px 40px; border: 1px dashed var(--line-strong);
  background: rgba(250, 246, 234, 0.6);
}
.empty-kicker { margin: 0 0 10px; font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); }
.empty h3 { margin: 0; font-size: clamp(24px, 3vw, 34px); letter-spacing: -0.035em; line-height: 1.1; }
.empty p { max-width: 560px; margin: 14px 0 0; color: var(--ink-soft); }
.empty-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.empty-foot { font-family: var(--mono); font-size: 10px; letter-spacing: 0.04em; color: var(--muted); margin-top: 22px; }

/* --------------------------------------------------------------- buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 16px; border: 1px solid var(--line-strong); background: var(--paper-2);
  color: var(--ink); font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase; text-decoration: none; transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.btn:hover { border-color: var(--ink); background: var(--ink); color: var(--paper-2); }
.btn-primary { background: var(--ink); border-color: var(--ink); color: var(--paper-2); }
.btn-primary:hover { background: var(--accent); border-color: var(--accent); }
.btn-small { padding: 8px 11px; font-size: 10px; }
.btn-xs { padding: 5px 8px; font-size: 9px; letter-spacing: 0.06em; }
.btn:disabled { opacity: 0.35; cursor: not-allowed; }
.text-link { font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; }

/* ---------------------------------------------------------------- panels */
.panel {
  margin-top: 18px; padding: 24px 26px 26px;
  background: var(--paper-2); border: 1px solid var(--line); box-shadow: var(--shadow);
  scroll-margin-top: 90px;
}
.panel-quiet { background: transparent; box-shadow: none; }
.panel-head {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 20px;
  padding-bottom: 16px; margin-bottom: 18px; border-bottom: 1px solid var(--line);
}
.panel-head h2 { margin: 0; font-size: 26px; letter-spacing: -0.035em; line-height: 1; font-weight: 650; }
.panel-tools { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; padding-top: 4px; }
.switch { display: inline-flex; align-items: center; gap: 7px; font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-soft); cursor: pointer; }
.switch input { accent-color: var(--ink); width: 14px; height: 14px; }
.field-inline { display: inline-flex; align-items: center; gap: 7px; font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-soft); }
.field-inline select {
  border: 1px solid var(--line); background: var(--paper-2); padding: 5px 6px;
  font-family: var(--mono); font-size: 10px;
}
.small-title { margin: 0 0 12px; font-size: 15px; letter-spacing: -0.01em; }

/* --------------------------------------------------------------- diagram */
.diagram-wrap { position: relative; }
.diagram { width: 100%; overflow: hidden; background: linear-gradient(180deg, transparent, rgba(22,25,19,0.025)); }
.diagram svg { display: block; width: 100%; height: auto; max-height: 620px; }
.diagram text { font-family: var(--mono); }
.legend { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-top: 8px; }
.legend-item {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 0;
  border: 0; background: none; font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.03em; color: var(--ink-soft);
}
.legend-item:hover { color: var(--ink); }
.legend-item .dot { background: var(--bike); }
.legend-item[aria-pressed="false"] { opacity: 0.38; text-decoration: line-through; }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; flex: 0 0 auto; }

/* ----------------------------------------------------------------- table */
.table-scroll { width: 100%; overflow-x: auto; overscroll-behavior-x: contain; }
table { width: 100%; border-collapse: collapse; }
.compare-table { min-width: 620px; font-size: 13px; }
.compare-table th, .compare-table td { padding: 10px 12px; text-align: left; vertical-align: top; }
.compare-table thead th {
  position: sticky; top: 0; z-index: 2; background: var(--paper-2);
  border-bottom: 2px solid var(--ink); font-weight: 400; vertical-align: bottom;
  min-width: 160px;
}
.compare-table thead th.metric-head {
  left: 0; z-index: 3; min-width: 170px; font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); vertical-align: bottom;
}
.bike-head { display: flex; flex-direction: column; gap: 2px; padding-bottom: 4px; }
.bike-head .bike-title { display: flex; align-items: baseline; gap: 7px; font-size: 14px; font-weight: 650; letter-spacing: -0.02em; line-height: 1.2; }
.bike-head .bike-title .dot { position: relative; top: -1px; background: var(--bike); }
.bike-head .bike-sub { font-family: var(--mono); font-size: 10px; color: var(--muted); letter-spacing: 0.03em; }
.bike-src { font-family: var(--mono); font-size: 9px; color: var(--muted); text-decoration: none; margin-top: 3px; }
.bike-src:hover { color: var(--accent); }
.compare-table tbody th {
  position: sticky; left: 0; z-index: 1; background: var(--paper-2);
  font-weight: 400; font-size: 12.5px; color: var(--ink-soft);
  border-bottom: 1px solid rgba(22,25,19,0.06); min-width: 170px;
}
.compare-table tbody tr:hover th, .compare-table tbody tr:hover td { background: rgba(22,25,19,0.032); }
.compare-table tbody th .hint-inline { display: block; font-family: var(--mono); font-size: 9px; color: var(--muted); letter-spacing: 0.03em; margin-top: 2px; }
.metric-unit { color: var(--muted); font-family: var(--mono); font-size: 9px; margin-left: 4px; }
.compare-table tbody td { border-bottom: 1px solid rgba(22,25,19,0.06); }
.compare-table tbody tr.group-row th {
  padding-top: 22px; padding-bottom: 6px; border-bottom: 1px solid var(--line);
  font-family: var(--mono); font-size: 9px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--accent); background: var(--paper-2);
}
.num { font-family: var(--mono); font-size: 15px; letter-spacing: -0.02em; white-space: nowrap; }
.compare-table td.num { text-align: right; }
.num .u { color: var(--muted); font-size: 10px; margin-left: 2px; letter-spacing: 0; }
.num .delta { display: block; font-size: 11px; letter-spacing: 0.01em; margin-top: 1px; }
.num.is-ref { font-weight: 600; }
.delta-up { color: #a8401b; }
.delta-down { color: #0a6c64; }
.delta-flat { color: var(--muted); }
td.is-ref { background: rgba(22,25,19,0.028); }
.est { font-family: var(--mono); font-size: 8px; letter-spacing: 0.04em; color: var(--muted); margin-left: 3px; text-transform: uppercase; }
.muted { color: var(--muted); }

/* -------------------------------------------------------------- insights */
.insights { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 18px; }
.insight { border-top: 2px solid var(--bike); padding-top: 14px; }
.insight h3 { display: flex; align-items: center; gap: 8px; margin: 0 0 10px; font-size: 14px; line-height: 1.3; letter-spacing: -0.015em; font-weight: 650; }
.insight h3 .dot { width: 10px; height: 10px; background: var(--bike); }
.insight h3 small { color: var(--muted); font-weight: 400; font-family: var(--mono); font-size: 10px; }
.insight ul { margin: 0; padding: 0; list-style: none; }
.insight li { position: relative; padding-left: 14px; margin-bottom: 9px; font-size: 13.5px; line-height: 1.45; color: var(--ink-soft); }
.insight li::before { content: "—"; position: absolute; left: 0; color: var(--bike); }
.insight strong { color: var(--ink); font-weight: 600; }

/* --------------------------------------------------------------- similar */
.similar { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.similar-item { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 12px 14px; background: var(--paper-2); }
.similar-item .s-name { font-size: 13px; font-weight: 600; letter-spacing: -0.01em; line-height: 1.3; }
.similar-item .s-name span { font-weight: 400; color: var(--muted); }
.similar-item .s-meta { font-family: var(--mono); font-size: 10px; color: var(--muted); margin-top: 3px; }
.similar-item .s-nums { font-family: var(--mono); font-size: 11px; text-align: right; white-space: nowrap; }
.similar-item .s-nums b { font-weight: 600; }
.similar-item .s-delta { display: block; font-size: 9px; color: var(--muted); }
.similar-empty { padding: 20px; background: var(--paper-2); color: var(--muted); font-size: 13px; grid-column: 1 / -1; }

/* ------------------------------------------------------------------- fit */
.fit-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 14px; }
.field { display: flex; flex-direction: column; gap: 6px; font-family: var(--mono); font-size: 10px; letter-spacing: 0.05em; text-transform: uppercase; color: var(--ink-soft); }
.field-wide { grid-column: span 2; }
.field .unit { color: var(--muted); font-size: 9px; }
.field input, .field select {
  width: 100%; padding: 10px 10px; border: 1px solid var(--line); background: var(--paper);
  font-family: var(--mono); font-size: 14px; letter-spacing: 0; text-transform: none;
}
.field input:focus, .field select:focus { border-color: var(--ink); outline: none; }
.fit-table { min-width: 700px; font-size: 13px; }
.fit-table th, .fit-table td { padding: 11px 12px; text-align: left; border-bottom: 1px solid rgba(22,25,19,0.07); vertical-align: top; }
.fit-table thead th { font-family: var(--mono); font-size: 9px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); font-weight: 400; border-bottom: 1px solid var(--ink); }
.fit-table .f-bike { font-weight: 600; letter-spacing: -0.01em; }
.fit-table .f-bike span { display: block; font-family: var(--mono); font-size: 10px; color: var(--muted); font-weight: 400; margin-top: 2px; }
.fit-table td { font-family: var(--mono); font-size: 12px; }
.fit-table th:not(:first-child):not(:last-child), .fit-table td:not(:first-child):not(:last-child) { text-align: right; }
.fit-table .f-match { font-family: var(--sans); font-size: 12px; }
.fit-table .f-match b { font-family: var(--mono); font-weight: 600; }
.fit-readout { margin-top: 16px; padding: 14px 16px; background: var(--wash); border-left: 2px solid var(--accent); font-size: 13px; color: var(--ink-soft); }
.fit-readout strong { color: var(--ink); }
.panel-quiet .assumptions { margin-top: 0; }

/* ------------------------------------------------------------------ data */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-bottom: 18px; }
.stat { display: flex; flex-direction: column; gap: 2px; padding: 20px 18px; background: var(--paper-2); }
.stat-value { font-family: var(--mono); font-size: clamp(24px, 3vw, 36px); letter-spacing: -0.04em; line-height: 1; }
.stat-label { font-family: var(--mono); font-size: 9px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.panel h2 { margin: 0 0 14px; font-size: 22px; letter-spacing: -0.03em; }
.panel > p { max-width: 720px; margin: 0 0 12px; color: var(--ink-soft); font-size: 15px; }
.defs { margin: 0; }
.defs dt { font-weight: 650; font-size: 14px; margin-top: 16px; }
.defs dt:first-child { margin-top: 0; }
.defs dd { margin: 4px 0 0; max-width: 760px; color: var(--ink-soft); font-size: 14px; line-height: 1.55; }
.tag { display: inline-block; font-family: var(--mono); font-size: 8px; letter-spacing: 0.08em; text-transform: uppercase; border: 1px solid var(--line-strong); padding: 1px 4px; color: var(--muted); vertical-align: middle; }
.tag.verified { border-color: #0d756c; color: #0d756c; }
.tag.manufacturer { border-color: var(--accent); color: var(--accent); }
.assumptions { margin: 0; padding-left: 18px; max-width: 820px; color: var(--ink-soft); font-size: 14px; line-height: 1.55; }
.assumptions li { margin-bottom: 9px; }
.build-note { margin-top: 22px; font-family: var(--mono); font-size: 10px; letter-spacing: 0.04em; color: var(--muted); }

/* ---------------------------------------------------------------- picker */
.picker {
  width: min(960px, 94vw); max-height: 88vh; padding: 0; border: 1px solid var(--ink);
  background: var(--paper-2); color: var(--ink); box-shadow: 0 40px 80px -20px rgba(22,25,19,0.45);
  overflow: hidden;
}
.picker[open] { display: flex; flex-direction: column; }
.picker::backdrop { background: rgba(22, 25, 19, 0.55); backdrop-filter: blur(3px); }
.picker-head {
  position: sticky; top: 0; z-index: 3; display: flex; align-items: flex-start; justify-content: space-between; gap: 20px;
  padding: 20px 24px 16px; background: var(--paper-2); border-bottom: 2px solid var(--ink);
  flex: 0 0 auto;
}
.picker-head h2 { margin: 4px 0 0; font-size: 26px; letter-spacing: -0.035em; }
.picker-head .eyebrow { margin: 0; }
.picker-tools { position: sticky; top: 89px; z-index: 3; padding: 16px 24px; background: var(--paper-2); border-bottom: 1px solid var(--line); flex: 0 0 auto; }
.search input {
  width: 100%; padding: 13px 14px; border: 1px solid var(--ink); background: var(--paper);
  font-family: var(--mono); font-size: 14px; letter-spacing: 0;
}
.search input::placeholder { color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.chip {
  padding: 6px 10px; border: 1px solid var(--line); background: var(--paper-2);
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-soft);
}
.chip:hover { border-color: var(--ink); }
.chip.is-active { background: var(--ink); border-color: var(--ink); color: var(--paper-2); }
.picker-results { padding: 10px 24px 26px; overflow-y: auto; max-height: calc(88vh - 210px); }
.picker-section { margin: 12px 0 6px; font-family: var(--mono); font-size: 9px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.model-list { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.model-row {
  display: flex; align-items: baseline; justify-content: space-between; gap: 14px;
  padding: 12px 14px; border: 0; background: var(--paper-2); text-align: left;
}
.model-row:hover { background: var(--ink); color: var(--paper-2); }
.model-row:hover .m-sub { color: rgba(250,246,234,0.72); }
.model-row .m-name { font-size: 13.5px; font-weight: 600; letter-spacing: -0.01em; line-height: 1.3; }
.model-row .m-name span { font-weight: 400; color: var(--muted); }
.model-row .m-name .m-top { margin-left: 8px; padding: 2px 5px; border: 1px solid var(--accent); color: var(--accent); font-family: var(--mono); font-size: 9px; letter-spacing: 0.04em; white-space: nowrap; }
.model-row:hover .m-name .m-top { color: var(--paper-2); border-color: var(--paper-2); }
.model-row:hover .m-name span { color: rgba(250,246,234,0.72); }
.model-row .m-sub { display: block; margin-top: 2px; font-family: var(--mono); font-size: 9.5px; color: var(--muted); letter-spacing: 0.02em; }
.model-row .m-go { font-family: var(--mono); font-size: 10px; white-space: nowrap; color: var(--accent); }
.model-row:hover .m-go { color: var(--paper-2); }
.picker-back { margin: 8px 0 14px; border: 0; background: none; padding: 0; font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-soft); text-decoration: underline; text-underline-offset: 3px; }
.picker-back:hover { color: var(--accent); }
.picker-model-head { margin: 0 0 2px; font-size: 22px; letter-spacing: -0.03em; }
.picker-model-sub { margin: 0 0 14px; font-family: var(--mono); font-size: 10px; color: var(--muted); }
.size-table { width: 100%; min-width: 520px; font-size: 12px; }
.size-table th, .size-table td { padding: 9px 10px; text-align: left; border-bottom: 1px solid rgba(22,25,19,0.08); }
.size-table thead th { font-family: var(--mono); font-size: 9px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); font-weight: 400; border-bottom: 1px solid var(--ink); }
.size-table td { font-family: var(--mono); font-size: 11.5px; }
.size-table .sz-label { font-family: var(--sans); font-size: 13px; font-weight: 650; }
.size-table .sz-config { font-size: 10px; color: var(--muted); }
.size-table tr:hover td { background: var(--wash); }
.picker-empty { padding: 30px 4px; color: var(--muted); font-size: 14px; }

/* ----------------------------------------------------------------- toast */
.toast {
  position: fixed; left: 50%; bottom: 24px; z-index: 60; transform: translate(-50%, 16px);
  padding: 11px 16px; background: var(--ink); color: var(--paper-2);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.03em;
  opacity: 0; pointer-events: none; transition: opacity 0.18s, transform 0.18s;
  max-width: 90vw;
}
.toast.is-on { opacity: 1; transform: translate(-50%, 0); }
.notice { margin: 16px 0; padding: 14px 16px; border-left: 3px solid var(--accent); background: rgba(204,79,36,0.08); font-size: 14px; }

/* ------------------------------------------------------------------ foot */
.site-foot { border-top: 1px solid var(--line); margin-top: 40px; padding: 34px 0 44px; }
.foot-inner { display: flex; justify-content: space-between; gap: 30px; align-items: flex-start; }
.foot-mark { font-family: var(--mono); font-size: 12px; letter-spacing: 0.1em; color: var(--accent); }
.site-foot p { margin: 8px 0 0; font-size: 12.5px; color: var(--muted); line-height: 1.5; }
.foot-links { display: flex; flex-wrap: wrap; gap: 18px; font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em; text-transform: uppercase; }
.foot-links a { text-decoration: none; color: var(--ink-soft); }
.foot-links a:hover { color: var(--accent); }

/* -------------------------------------------------------------- responsive */
@media (max-width: 1000px) {
  .slots { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .head-note { display: none; }
  .fit-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 720px) {
  .wrap { padding: 0 18px; }
  .head-inner { height: auto; padding: 12px 18px; flex-wrap: wrap; gap: 10px 16px; }
  .wordmark { font-size: 16px; }
  .nav { order: 3; width: 100%; margin-left: 0; overflow-x: auto; }
  .nav a { padding: 6px 8px 6px 0; white-space: nowrap; }
  .hero { padding: 40px 0 32px; }
  .hero h1, .page-head h1 { font-size: clamp(36px, 10vw, 52px); }
  .lede { font-size: 16.5px; margin-top: 18px; }
  .hero-meta { font-size: 10px; gap: 6px 16px; }
  .hero-meta-note { margin-left: 0; width: 100%; margin-top: 4px; }
  .page-head { padding: 40px 0 28px; }
  .section-head { align-items: flex-start; flex-direction: column; gap: 8px; }
  .section-actions { align-items: flex-start; flex-direction: column; gap: 8px; }
  .slots { grid-template-columns: 1fr; }
  .slot-add { min-height: 120px; }
  .panel { padding: 18px 16px 20px; margin-top: 12px; }
  .panel-head { flex-direction: column; gap: 10px; }
  .panel-head h2 { font-size: 22px; }
  .panel-note { max-width: none; }
  .empty { padding: 30px 20px; }
  .fit-grid { grid-template-columns: 1fr 1fr; }
  .field-wide { grid-column: 1 / -1; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .model-list { grid-template-columns: 1fr; }
  .picker { width: 100vw; max-height: 92vh; border-left: 0; border-right: 0; }
  .picker-head, .picker-tools, .picker-results { padding-left: 16px; padding-right: 16px; }
  .picker-tools { top: 84px; }
  .foot-inner { flex-direction: column; }
  .similar-item { align-items: flex-start; flex-direction: column; gap: 8px; }
  .similar-item .s-nums { text-align: left; }
  .diagram svg { max-height: none; }
  .diagram svg .dim-group, .dims-switch { display: none; }
  .diagram svg .bike-label, .diagram svg .scale-label { font-size: 56px; }
}
@media (min-width: 721px) and (max-width: 1000px) {
  .slot { padding: 16px; }
}

@media print {
  .site-head, .hero-actions, .slot-actions, .section-actions, .site-foot, .picker, .toast, .panel-tools { display: none !important; }
  body { background: white; }
  body::before { display: none; }
  .panel { break-inside: avoid; box-shadow: none; }
}