/* SelfTaxLab design tokens */
:root {
  --bg: #ffffff;
  --bg-soft: #f5f8f8;
  --fg: #0d1a1c;
  --muted: #5a6b70;
  --line: #e0e8e8;
  --card: #ffffff;
  --accent: #0f766e;
  --accent-ink: #ffffff;
  --accent-soft: #e6f4f2;
  --good: #12805c;
  --warn: #b45309;
  --bad: #b42318;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(12,26,28,.05), 0 8px 24px -14px rgba(12,26,28,.18);
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #08110f;
    --bg-soft: #0d1a18;
    --fg: #e8f2f0;
    --muted: #93a8a4;
    --line: #1c2f2c;
    --card: #0e1a18;
    --accent: #34d3b4;
    --accent-ink: #04120f;
    --accent-soft: #102a26;
    --good: #34d399;
    --warn: #fbbf24;
    --bad: #f87171;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 10px 30px -16px rgba(0,0,0,.75);
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased; }
h1, h2, h3 { line-height: 1.22; letter-spacing: -.02em; margin: 0 0 .5em; font-weight: 700; }
h1 { font-size: clamp(1.85rem, 1.2rem + 2.4vw, 2.8rem); }
h2 { font-size: clamp(1.3rem, 1rem + 1.1vw, 1.8rem); }
h3 { font-size: 1.1rem; }
p { margin: 0 0 1em; }
p.lede { font-size: clamp(1.02rem, .96rem + .3vw, 1.16rem); color: var(--muted); max-width: 64ch; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, .mono { font-family: var(--mono); font-size: .92em; }
hr { border: 0; border-top: 1px solid var(--line); margin: 30px 0; }
.wrap { width: 100%; max-width: 1140px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 820px; }

.site-header { position: sticky; top: 0; z-index: 20; backdrop-filter: saturate(180%) blur(12px);
  background: color-mix(in srgb, var(--bg) 88%, transparent); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; gap: 18px; height: 60px; }
.brand { display: flex; align-items: center; gap: 9px; font-weight: 700; color: var(--fg); letter-spacing: -.02em; }
.brand:hover { text-decoration: none; }
.brand svg { width: 26px; height: 26px; }
.site-nav { display: flex; gap: 15px; margin-left: auto; font-size: .92rem; flex-wrap: wrap; }
.site-nav a { color: var(--muted); }
.site-nav a[aria-current="page"], .site-nav a:hover { color: var(--fg); text-decoration: none; }

.hero { padding: 46px 0 22px; }
.hero .eyebrow { display: inline-block; font-size: .76rem; font-weight: 600; letter-spacing: .06em;
  text-transform: uppercase; color: var(--accent); background: var(--accent-soft); padding: 5px 11px; border-radius: 999px; margin-bottom: 14px; }
.hero h1 { max-width: 24ch; }
section { padding: 24px 0; }
.stack > * + * { margin-top: 18px; }
.grid-2 { display: grid; grid-template-columns: minmax(0,1.02fr) minmax(0,.98fr); gap: 22px; align-items: start; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
@media (max-width: 880px) { .grid-2, .grid-3 { grid-template-columns: minmax(0,1fr); } }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.card--flat { box-shadow: none; }
.card h2, .card h3 { margin-top: 0; }
.sticky { position: sticky; top: 76px; }
@media (max-width: 880px) { .sticky { position: static; } }
.tile { display: block; color: inherit; }
.tile:hover { text-decoration: none; border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); }
.tile .tag { display: inline-block; margin-top: 12px; font-size: .78rem; color: var(--accent); font-weight: 600; }

.field { margin-bottom: 14px; }
label, .label { display: block; font-size: .78rem; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
input[type="number"], input[type="text"], input[type="email"], select {
  width: 100%; padding: 10px 12px; font: inherit; font-size: .98rem; color: var(--fg);
  background: var(--bg); border: 1px solid var(--line); border-radius: 10px; appearance: none; }
select { background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 18px) 52%, calc(100% - 13px) 52%; background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat; padding-right: 34px; }
input:focus-visible, select:focus-visible, button:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.row { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; }
@media (max-width: 560px) { .row { grid-template-columns: minmax(0,1fr); } }
.check { display: flex; align-items: center; gap: 9px; font-size: .93rem; text-transform: none; letter-spacing: 0; color: var(--fg); font-weight: 500; }
.check input { width: 17px; height: 17px; accent-color: var(--accent); }
.hint { font-size: .82rem; color: var(--muted); margin: 6px 0 0; }
button, .btn { font: inherit; font-weight: 600; cursor: pointer; border-radius: 10px; padding: 10px 16px;
  border: 1px solid var(--line); background: var(--bg); color: var(--fg); }
button:hover, .btn:hover { border-color: var(--muted); text-decoration: none; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.06); }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }

.result { background: var(--accent-soft); border: 1px solid color-mix(in srgb, var(--accent) 24%, var(--line)); border-radius: var(--radius); padding: 18px 20px; }
.result .k { font-size: .78rem; font-weight: 600; letter-spacing: .05em; text-transform: uppercase; color: var(--muted); }
.result .v { font-size: clamp(1.9rem, 1.2rem + 2.6vw, 2.7rem); font-weight: 700; letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.result .sub { font-size: .9rem; color: var(--muted); }
.kpis { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 1px; background: var(--line);
  border: 1px solid var(--line); border-radius: 12px; overflow: hidden; margin-top: 16px; }
.kpi { background: var(--card); padding: 12px 14px; }
.kpi .k { font-size: .73rem; font-weight: 600; letter-spacing: .05em; text-transform: uppercase; color: var(--muted); }
.kpi .v { font-size: 1.2rem; font-weight: 700; font-variant-numeric: tabular-nums; letter-spacing: -.02em; }
.kpi .v small { font-weight: 500; color: var(--muted); font-size: .76em; }

.verdict { border-radius: 12px; padding: 14px 16px; border: 1px solid var(--line); background: var(--bg-soft); }
.verdict--yes { border-color: color-mix(in srgb, var(--good) 40%, var(--line)); background: color-mix(in srgb, var(--good) 10%, transparent); }
.verdict--no { border-color: color-mix(in srgb, var(--bad) 35%, var(--line)); background: color-mix(in srgb, var(--bad) 8%, transparent); }
.verdict--near { border-color: color-mix(in srgb, var(--warn) 40%, var(--line)); background: color-mix(in srgb, var(--warn) 10%, transparent); }
.verdict h3 { margin: 0 0 6px; }
.verdict p { margin: 0; color: var(--muted); font-size: .94rem; }

.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { font-size: .73rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); font-weight: 600; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tbody tr:hover { background: var(--bg-soft); }
tr.is-total td { font-weight: 700; border-top: 2px solid var(--line); }

.bars { display: grid; gap: 7px; }
.bar-row { display: grid; grid-template-columns: minmax(110px,170px) 1fr minmax(70px,auto); gap: 10px; align-items: center; font-size: .86rem; }
.bar-row .name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--muted); }
.bar-row .val { text-align: right; font-variant-numeric: tabular-nums; font-weight: 600; }
.bar { background: var(--bg-soft); border-radius: 6px; height: 16px; overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--accent); border-radius: 6px; min-width: 2px; }

.ad-slot { display: flex; align-items: center; justify-content: center; text-align: center; min-height: 100px; margin: 24px 0;
  border-radius: 12px; border: 1px dashed var(--line); background: var(--bg-soft); color: var(--muted);
  font-size: .76rem; letter-spacing: .05em; text-transform: uppercase; }
.ad-slot > ins { width: 100%; }

.aff { border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--line)); border-radius: 12px; padding: 14px 16px;
  background: var(--accent-soft); display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.aff .aff-body { flex: 1 1 260px; }
.aff .aff-body strong { display: block; margin-bottom: 2px; }
.aff .aff-body span { color: var(--muted); font-size: .88rem; }
.aff .btn-primary { white-space: nowrap; }
.aff--placeholder { border-style: dashed; background: transparent; color: var(--muted); }

.prose { max-width: 74ch; }
.prose h2 { margin-top: 32px; }
.prose h3 { margin-top: 24px; }
.prose li { margin-bottom: 6px; }
.faq details { border-bottom: 1px solid var(--line); padding: 13px 0; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq summary::marker { color: var(--accent); }
.faq details p { margin: 10px 0 0; color: var(--muted); }
.note { font-size: .84rem; color: var(--muted); border-left: 3px solid var(--line); padding-left: 12px; }
.newsletter { display: flex; gap: 10px; flex-wrap: wrap; }
.newsletter input { flex: 1 1 220px; }
.form-msg { font-size: .88rem; margin-top: 10px; color: var(--good); min-height: 1.2em; }
.disc { font-size: .8rem; color: var(--muted); background: var(--bg-soft); border: 1px solid var(--line);
  border-radius: 10px; padding: 10px 12px; }
.flag { display: inline-block; font-size: .68rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase;
  padding: 2px 7px; border-radius: 999px; background: color-mix(in srgb, var(--warn) 16%, transparent); color: var(--warn); }

.site-footer { border-top: 1px solid var(--line); margin-top: 40px; padding: 32px 0; background: var(--bg-soft); }
.site-footer .cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 24px; }
@media (max-width: 720px) { .site-footer .cols { grid-template-columns: minmax(0,1fr); } }
.site-footer h4 { font-size: .76rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 0 0 10px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; font-size: .9rem; }
.site-footer li { margin-bottom: 7px; }
.site-footer .fine { margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--line); font-size: .8rem; color: var(--muted); }
.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; }
@media print {
  .site-header, .site-footer, .ad-slot, .aff, .btn-row, .no-print { display: none !important; }
  .card { box-shadow: none; border-color: #999; }
  body { font-size: 12pt; }
}

/* ---------------- Paid offer block ---------------- */
.offer { border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--line)); border-radius: var(--radius);
  padding: 22px 22px 20px; background: linear-gradient(180deg, var(--accent-soft), transparent 68%); }
.offer-head { display: flex; gap: 18px; align-items: flex-start; justify-content: space-between; flex-wrap: wrap; }
.offer-kicker { display: inline-block; font-size: .72rem; font-weight: 700; letter-spacing: .06em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 8px; }
.offer h3 { margin: 0; font-size: clamp(1.25rem, 1rem + .9vw, 1.6rem); }
.offer-price { text-align: right; white-space: nowrap; }
.offer-price strong { display: block; font-size: 2.1rem; font-weight: 700; letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.offer-price span { font-size: .78rem; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
.offer ul { margin: 16px 0 14px; padding-left: 20px; }
.offer li { margin-bottom: 7px; font-size: .95rem; }
.offer-meta { display: flex; gap: 18px; flex-wrap: wrap; font-size: .85rem; color: var(--muted); margin-bottom: 16px; }
.offer-cta { display: inline-block; padding: 13px 22px; font-size: 1rem; }
.offer-cta-row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
@media (max-width: 560px) { .offer-price { text-align: left; } }

/* ---------------- Waitlist form ---------------- */
.offer-waitlist { display: flex; gap: 10px; flex-wrap: wrap; }
.offer-waitlist input { flex: 1 1 240px; }
.offer-waitlist .btn { white-space: nowrap; }
.offer .form-msg { min-height: 1.2em; font-size: .88rem; margin: 8px 0 0; color: var(--good); }

.flag--ok { background: color-mix(in srgb, var(--good) 16%, transparent); color: var(--good); }

.offer-price-note { font-size: .9rem; margin: 0 0 14px; color: var(--fg); }
.offer-price-note strong { color: var(--accent); }