:root {
  --canvas: #f6f4ee;
  --card: #fffefb;
  --ink: #23221c;
  --body: #57554d;
  --muted: #66635a;
  --line: #e5e2d8;
  --line-strong: #cfcbbe;
  --accent: #c8361b;
  --accent-ink: #a52a12;
  --accent-wash: #fbe9e3;
  --ok: #2a7a57;
  --sans: ui-sans-serif, -apple-system, "SF Pro Text", "Segoe UI Variable", "Segoe UI", system-ui, sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --r: 14px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--canvas); color: var(--ink);
  font: 16px/1.5 var(--sans); letter-spacing: -0.006em;
  -webkit-font-smoothing: antialiased;
}
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; letter-spacing: 0; }
a { color: inherit; }
[hidden] { display: none !important; }

.top {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 16px clamp(16px, 4vw, 40px); max-width: 1180px; margin: 0 auto;
}
.mark { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; text-decoration: none; font-size: 15px; }
.mark-dot { width: 22px; height: 22px; border-radius: 7px; background: var(--accent); position: relative; flex: none; }
.mark-dot::after { content: ""; position: absolute; left: 5px; right: 5px; top: 9.5px; height: 3px; border-radius: 2px; background: #fff; }
.top-right { display: flex; align-items: center; gap: 8px; min-width: 0; }
.pill { font: 13px var(--mono); color: var(--body); border: 1px solid var(--line); border-radius: 99px; padding: 4px 10px; max-width: 34vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

main { max-width: 1180px; margin: 0 auto; padding: 0 clamp(16px, 4vw, 40px) 40px; }
.intro { padding: clamp(20px, 5vw, 56px) 0 clamp(20px, 4vw, 40px); max-width: 760px; }
.eyebrow { font: 12px var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 0 0 14px; }
h1 {
  font-family: var(--serif); font-weight: 400; font-size: clamp(2.1rem, 1.5rem + 2.6vw, 3.6rem);
  line-height: 1.04; letter-spacing: -0.025em; margin: 0 0 18px; text-wrap: balance;
}
h1 em { font-style: italic; color: var(--accent); text-decoration: line-through; text-decoration-thickness: 3px; text-decoration-color: color-mix(in oklab, var(--accent) 55%, transparent); }
.lede { font-size: 17px; color: var(--body); margin: 0; max-width: 620px; text-wrap: pretty; }
.lede strong { color: var(--ink); font-weight: 600; }

.layout { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 900px) {
  .layout { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); align-items: start; }
  .wide { grid-column: 1 / -1; }
}
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: clamp(16px, 3vw, 24px); min-width: 0; }
.step-head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.step-head h2 { font-size: 17px; font-weight: 600; margin: 0; letter-spacing: -0.01em; }
.num { width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center; font: 600 13px var(--mono); background: var(--ink); color: var(--canvas); flex: none; }
.num-quiet { background: transparent; color: var(--ink); border: 1px solid var(--line-strong); }
.count { margin-left: auto; font-size: 13px; color: var(--muted); }

.field { display: grid; gap: 6px; margin-bottom: 14px; }
.field > span { font-size: 13px; color: var(--body); display: flex; justify-content: space-between; gap: 8px; }
.hint-link { color: var(--accent-ink); }
input:not([type=checkbox]):not([type=range]), select {
  font: inherit; font-size: 16px; color: var(--ink); background: #fff; border: 1px solid var(--line-strong);
  border-radius: 10px; padding: 11px 12px; width: 100%; min-width: 0;
}
input:focus-visible, select:focus-visible, button:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.check { display: flex; align-items: center; gap: 10px; font-size: 15px; color: var(--body); margin: 6px 0; cursor: pointer; }
.check input { width: 18px; height: 18px; accent-color: var(--accent); flex: none; }

.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 14px; }
.btn {
  appearance: none; font: 500 15px var(--sans); border-radius: 10px; padding: 11px 16px; cursor: pointer;
  border: 1px solid transparent; text-decoration: none; display: inline-flex; align-items: center; gap: 6px;
  transition: background .15s, border-color .15s, transform .1s; min-height: 44px;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-sm { font-size: 14px; padding: 7px 12px; min-height: 36px; }
.btn-primary { background: var(--ink); color: var(--canvas); }
.btn-primary:hover:not(:disabled) { background: #000; }
.btn-danger { background: var(--accent); color: #fff; }
.btn-danger:hover:not(:disabled) { background: var(--accent-ink); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn-ghost:hover:not(:disabled) { border-color: var(--ink); }

.note { font-size: 14px; color: var(--accent-ink); background: var(--accent-wash); border-radius: 8px; padding: 8px 10px; margin: -4px 0 10px; }
.note-soft { font-size: 14px; color: var(--body); margin: 0 0 12px; }
.fine { font-size: 13px; color: var(--muted); margin: 14px 0 0; text-wrap: pretty; }
.signed { margin: 0 0 10px; }

.seg { display: grid; grid-template-columns: repeat(3, 1fr); background: var(--canvas); border: 1px solid var(--line); border-radius: 11px; padding: 3px; margin-bottom: 16px; }
.seg-b { appearance: none; border: 0; background: transparent; font: 500 14px var(--sans); color: var(--body); padding: 9px 4px; border-radius: 8px; cursor: pointer; min-height: 40px; }
.seg-b[aria-selected=true] { background: #fff; color: var(--ink); box-shadow: 0 1px 2px rgba(35,34,28,.12); }

.threshold { border-top: 1px dashed var(--line-strong); padding-top: 14px; margin-top: 4px; margin-bottom: 8px; }
.threshold label { font-size: 13px; color: var(--body); }
.thr-row { display: grid; grid-template-columns: 1fr 108px; gap: 12px; align-items: center; margin-top: 6px; }
.thr-row input[type=range] { width: 100%; accent-color: var(--accent); }
.thr-row input[type=number] { font-family: var(--mono); text-align: right; }

.progress { margin-top: 14px; }
.bar { height: 6px; background: var(--line); border-radius: 99px; overflow: hidden; }
.bar i { display: block; height: 100%; width: 0; background: var(--accent); transition: width .3s; }
.progress p { font-size: 13px; color: var(--body); margin: 8px 0 0; overflow-wrap: anywhere; }

.empty { display: grid; justify-items: center; text-align: center; color: var(--muted); padding: 22px 8px; }
.empty svg { width: 120px; color: var(--line-strong); margin-bottom: 8px; }
.empty p { margin: 0; max-width: 340px; font-size: 15px; }
.summary { font-family: var(--serif); font-size: clamp(1.25rem, 1rem + 1vw, 1.6rem); line-height: 1.25; margin: 0 0 14px; letter-spacing: -0.01em; text-wrap: balance; }
.summary b { color: var(--accent); font-weight: 400; }
.list-tools { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }

.list { list-style: none; margin: 0; padding: 0; }
#list { max-height: min(640px, 70vh); overflow-y: auto; overscroll-behavior: contain; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
#undoList { max-height: 420px; overflow-y: auto; }
.item { display: grid; grid-template-columns: auto 40px minmax(0, 1fr) auto; gap: 12px; align-items: center; padding: 10px 4px; border-top: 1px solid var(--line); }
.item:first-child { border-top: 0; }
.item input { width: 20px; height: 20px; accent-color: var(--accent); }
.av { width: 40px; height: 40px; border-radius: 50%; background: var(--line); object-fit: cover; display: block; }
.who { min-width: 0; }
.who .n { font-weight: 600; font-size: 15px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.who .h { font-size: 13px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.who .h a { text-decoration: none; }
.who .h a:hover { text-decoration: underline; }
.stat { text-align: right; font-family: var(--mono); font-variant-numeric: tabular-nums; }
.stat .big { font-size: 15px; color: var(--accent-ink); font-weight: 600; }
.stat .small { font-size: 12px; color: var(--muted); white-space: nowrap; }
.tag { font: 11px var(--mono); border: 1px solid var(--line-strong); border-radius: 99px; padding: 1px 7px; color: var(--body); margin-left: 6px; vertical-align: 1px; }
.list-undo .item { grid-template-columns: 40px minmax(0, 1fr) auto; }
.item.done .who .n::after { content: " ✓"; color: var(--ok); }
.more { margin-top: 10px; }

.sheet { position: fixed; inset: 0; background: rgba(35,34,28,.42); display: grid; place-items: end center; z-index: 50; padding: 12px; }
@media (min-width: 640px) { .sheet { place-items: center; } }
.sheet-card { background: var(--card); border-radius: 18px; padding: 24px; width: min(460px, 100%); border: 1px solid var(--line); box-shadow: 0 20px 60px rgba(35,34,28,.25); }
.sheet-card h3 { font-family: var(--serif); font-weight: 400; font-size: 1.7rem; margin: 0 0 8px; letter-spacing: -0.015em; }
.sheet-card p { color: var(--body); margin: 0 0 12px; }
.ticks { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.ticks li { padding-left: 24px; position: relative; font-size: 15px; }
.ticks li::before { content: ""; position: absolute; left: 2px; top: 10px; width: 12px; height: 3px; background: var(--accent); border-radius: 2px; }

.toast { position: fixed; left: 50%; bottom: 20px; transform: translate(-50%, 20px); background: var(--ink); color: var(--canvas); padding: 10px 16px; border-radius: 10px; font-size: 14px; opacity: 0; pointer-events: none; transition: .2s; max-width: calc(100vw - 32px); z-index: 60; }
.toast.on { opacity: 1; transform: translate(-50%, 0); }
.foot { max-width: 1180px; margin: 0 auto; padding: 8px clamp(16px, 4vw, 40px) 40px; color: var(--muted); font-size: 13px; }

@media (max-width: 420px) {
  .item { grid-template-columns: auto 36px minmax(0, 1fr) auto; gap: 10px; }
  .av { width: 36px; height: 36px; }
  .top .btn-sm { padding: 7px 10px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

/* FAQ + made-by line */
.faq { max-width: 1180px; margin: 8px auto 0; padding: 0 clamp(16px, 4vw, 40px); }
.faq h2 { font-family: var(--serif); font-weight: 400; font-size: 1.6rem; margin: 0 0 10px; }
.faq details { border-top: 1px solid var(--line); padding: 12px 0; }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; font-weight: 600; color: var(--ink); }
.faq details p { color: var(--body); margin: 8px 0 0; max-width: 720px; text-wrap: pretty; }
.madeby { max-width: 1180px; margin: 20px auto 0; padding: 0 clamp(16px, 4vw, 40px); color: var(--muted); font-size: 13px; }
.foot p { margin: 0; overflow-wrap: anywhere; }
/* QA R54: touch targets >= 24px (44px on phones) */
.mark { min-height: 44px; }
.check { min-height: 32px; }
.check input { width: 24px; height: 24px; }
.thr-row input[type=range] { height: 28px; }
.faq summary { padding: 4px 0; }