:root {
  color-scheme: light;
  --paper: #f7f6f2;
  --surface: #fcfcfb;
  --ink: #15201b;
  --ink-2: #4a544f;
  --muted: #6b746f;
  --line: #dcdad2;
  --brand: #1f4d3a;
  --brand-ink: #ffffff;
  --brand-soft: #e4ece7;
  --accent: #b5622f;
  --radius: 10px;
  --max: 1080px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --paper: #121614;
    --surface: #1a1a19;
    --ink: #eef0ec;
    --ink-2: #c3c8c3;
    --muted: #9aa29d;
    --line: #2f3632;
    --brand: #7fb89c;
    --brand-ink: #0f1a14;
    --brand-soft: #1f2b25;
    --accent: #e08a55;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --paper: #121614;
  --surface: #1a1a19;
  --ink: #eef0ec;
  --ink-2: #c3c8c3;
  --muted: #9aa29d;
  --line: #2f3632;
  --brand: #7fb89c;
  --brand-ink: #0f1a14;
  --brand-soft: #1f2b25;
  --accent: #e08a55;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.6 "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}
h1, h2, h3 { font-family: "Fraunces", Georgia, serif; font-weight: 600; line-height: 1.15; margin: 0 0 .5em; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.2rem); }
h3 { font-size: 1.15rem; font-family: "Inter", system-ui, sans-serif; font-weight: 600; letter-spacing: 0; }
p { margin: 0 0 1em; }
a { color: var(--brand); }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 32px; } }

header.site { padding: 20px 0; border-bottom: 1px solid var(--line); }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.logo { font-family: "Fraunces", Georgia, serif; font-size: 1.35rem; font-weight: 600; color: var(--ink); text-decoration: none; }
.logo span { color: var(--brand); }
.logo img { display: block; height: 30px; width: auto; }
nav.top a { color: var(--ink-2); text-decoration: none; font-size: .95rem; margin-left: 20px; }
nav.top a:hover { color: var(--ink); }
@media (max-width: 640px) { nav.top .hide-sm { display: none; } }

.btn { display: inline-block; padding: 12px 20px; border-radius: 8px; font-weight: 600; text-decoration: none; border: 1px solid var(--brand); }
.btn-primary { background: var(--brand); color: var(--brand-ink); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { color: var(--brand); background: transparent; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }

section { padding: 64px 0; border-bottom: 1px solid var(--line); }
.eyebrow { text-transform: uppercase; letter-spacing: .08em; font-size: .78rem; font-weight: 600; color: var(--accent); margin-bottom: 12px; }
.lead { font-size: 1.15rem; color: var(--ink-2); max-width: 640px; }
.hero { padding: 72px 0 64px; }

.grid { display: grid; gap: 20px; }
@media (min-width: 720px) { .g2 { grid-template-columns: 1fr 1fr; } .g3 { grid-template-columns: repeat(3, 1fr); } }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.card p:last-child { margin-bottom: 0; }
.num { font-family: "Fraunces", Georgia, serif; font-size: 1.6rem; color: var(--brand); display: block; margin-bottom: 6px; }

ul.check { list-style: none; padding: 0; margin: 0; }
ul.check li { padding: 10px 0 10px 30px; border-bottom: 1px solid var(--line); position: relative; }
ul.check li::before { content: ""; position: absolute; left: 4px; top: 18px; width: 12px; height: 7px; border-left: 2px solid var(--brand); border-bottom: 2px solid var(--brand); transform: rotate(-45deg); }
ul.check li:last-child { border-bottom: 0; }
ul.cross li::before { border: 0; width: 12px; height: 2px; top: 22px; background: var(--muted); transform: none; }

.preview { display: block; text-decoration: none; color: inherit; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.preview:hover { border-color: var(--brand); }
.mini-kpis { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin: 12px 0; }
@media (min-width: 560px) { .mini-kpis { grid-template-columns: repeat(4, 1fr); } }
.mini-kpis div { background: var(--paper); border-radius: 8px; padding: 10px 12px; }
.mini-kpis b { display: block; font-size: 1.15rem; }
.mini-kpis small { color: var(--muted); font-size: .78rem; }

details { border-bottom: 1px solid var(--line); padding: 16px 0; }
details summary { cursor: pointer; font-weight: 600; list-style: none; }
details summary::-webkit-details-marker { display: none; }
details summary::after { content: "+"; float: right; color: var(--muted); }
details[open] summary::after { content: "–"; }
details p { margin: 10px 0 0; color: var(--ink-2); }

.cta-band { background: var(--brand-soft); border-radius: var(--radius); padding: 40px 24px; text-align: center; }
footer.site { padding: 32px 0 48px; color: var(--muted); font-size: .88rem; }
footer.site .wrap { display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; }
footer.site a { color: var(--muted); }
.note { font-size: .85rem; color: var(--muted); }

/* ---------- v2: interaction and layout ---------- */
:root { --series-1:#2a78d6; --series-2:#eb6834; --ramp-1:#86b6ef; --ramp-2:#5598e7; --ramp-3:#2a78d6; --ramp-4:#1c5cab; --ramp-5:#104281; --critical:#d03b3b; --warning:#b77a00; --good:#0ca30c; --grid:#e6e4dd; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) { --series-1:#3987e5; --series-2:#d95926; --ramp-1:#184f95; --ramp-2:#1c5cab; --ramp-3:#2a78d6; --ramp-4:#5598e7; --ramp-5:#9ec5f4; --warning:#fab219; --grid:#2c302d; } }
html { scroll-behavior: smooth; }
header.sticky { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter: blur(8px); transition: box-shadow .2s; }
header.sticky.scrolled { box-shadow: 0 1px 12px rgba(0,0,0,.08); }
header.site .wrap { min-height: 40px; }
.btn { transition: transform .15s, filter .15s, background .15s; }
.btn:hover { transform: translateY(-1px); }
.btn-sm { padding: 8px 14px; font-size: .9rem; margin-left: 20px; }
nav.top a.btn-primary { color: var(--brand-ink); }
section.alt { background: color-mix(in srgb, var(--brand-soft) 45%, var(--paper)); }
.wrap.narrow { max-width: 780px; }
.center { text-align: center; }

.hero { padding: 56px 0 40px; }
.hero-grid { display: grid; gap: 32px; align-items: center; }
@media (min-width: 900px) { .hero-grid { grid-template-columns: 1.05fr 1fr; gap: 48px; } }
.fit-line { display: flex; align-items: center; gap: 8px; color: var(--ink-2); font-size: .95rem; margin-top: 4px; }
.fit-line .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); flex: none; }

.preview-card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 18px; box-shadow: 0 12px 40px rgba(21,32,27,.08); }
.pc-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; font-size: .92rem; }
.pill { background: var(--brand-soft); color: var(--brand); font-size: .78rem; font-weight: 600; padding: 3px 10px; border-radius: 20px; }
.tabs { display: flex; gap: 4px; background: var(--paper); border-radius: 10px; padding: 4px; margin-bottom: 14px; }
.tabs button { flex: 1; border: 0; background: transparent; padding: 8px 6px; border-radius: 7px; font: 600 .85rem Inter, system-ui, sans-serif; color: var(--ink-2); cursor: pointer; transition: background .15s, color .15s; }
.tabs button[aria-selected="true"] { background: var(--surface); color: var(--ink); box-shadow: 0 1px 4px rgba(0,0,0,.08); }
.panel-q { font-family: "Fraunces", Georgia, serif; font-size: 1.15rem; margin: 0 0 12px; }
.tab-panel { animation: fadeUp .35s ease both; }
.bars .row { display: grid; grid-template-columns: 112px 1fr 52px; gap: 8px; align-items: center; font-size: .83rem; margin-bottom: 7px; }
.bars .track { height: 14px; background: var(--paper); border-radius: 4px; position: relative; overflow: hidden; }
.bars .fill { position: absolute; top: 0; bottom: 0; left: 10%; width: 0; background: var(--series-1); border-radius: 4px; transition: width .8s cubic-bezier(.2,.7,.2,1); }
.bars .fill.neg { background: var(--critical); }
.bars .zero { position: absolute; left: 10%; top: -2px; bottom: -2px; width: 1px; background: var(--muted); }
.bars .val { text-align: right; font-variant-numeric: tabular-nums; font-weight: 600; }
.stack { display: flex; gap: 2px; height: 34px; border-radius: 6px; overflow: hidden; margin-bottom: 10px; }
.stack span { display: block; width: 0; transition: width .8s cubic-bezier(.2,.7,.2,1); }
.stack-legend { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: .78rem; color: var(--ink-2); margin-bottom: 8px; }
.stack-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 5px; vertical-align: -1px; }
.spark { width: 100%; height: auto; display: block; margin-bottom: 6px; }
.spark text { font: 10px Inter, sans-serif; fill: var(--muted); }
.spark .line { stroke-dasharray: 800; stroke-dashoffset: 800; animation: draw 1.2s ease forwards; }
.flag-line { font-size: .86rem; color: var(--ink-2); margin: 10px 0 0; display: flex; gap: 8px; align-items: baseline; }
.preview-card .flag { font-size: .72rem; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; padding: 2px 7px; border-radius: 4px; flex: none; }
.preview-card .flag.crit { color: #fff; background: var(--critical); }
.preview-card .flag.warn { color: #15201b; background: #fab219; }

.assure { list-style: none; padding: 0; margin: 28px 0 0; display: flex; flex-wrap: wrap; gap: 10px 26px; justify-content: center; font-size: .9rem; color: var(--ink-2); }
.assure li { display: flex; align-items: center; gap: 8px; }
.assure li::before { content: ""; width: 14px; height: 8px; border-left: 2px solid var(--brand); border-bottom: 2px solid var(--brand); transform: rotate(-45deg) translateY(-2px); }

.q-grid { margin-top: 24px; }
.q-card { transition: transform .2s, box-shadow .2s, border-color .2s; }
.q-card:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(21,32,27,.08); border-color: var(--brand); }

.check label { display: flex; gap: 12px; align-items: flex-start; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; margin-bottom: 10px; cursor: pointer; transition: border-color .15s, background .15s; }
.check label:hover { border-color: var(--brand); }
.check input { width: 18px; height: 18px; accent-color: var(--brand); margin-top: 2px; flex: none; }
.check label.on { border-color: var(--brand); background: var(--brand-soft); }
.result { margin-top: 18px; }
.meter { height: 10px; background: var(--surface); border: 1px solid var(--line); border-radius: 6px; overflow: hidden; margin-bottom: 10px; }
.meter span { display: block; height: 100%; width: 0; background: var(--brand); transition: width .4s ease; }
#checkText { font-weight: 600; }

.steps { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 16px; }
@media (min-width: 900px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.steps li { display: flex; gap: 16px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.step-n { flex: none; width: 34px; height: 34px; border-radius: 50%; background: var(--brand); color: var(--brand-ink); display: grid; place-items: center; font-weight: 600; }
.steps p { margin: 0; color: var(--ink-2); }

.plans { margin-top: 24px; }
.plan { position: relative; transition: transform .2s, box-shadow .2s; }
.plan:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(21,32,27,.08); }
.plan.featured { border: 2px solid var(--brand); }
.badge { position: absolute; top: -12px; left: 20px; background: var(--brand); color: var(--brand-ink); font-size: .72rem; font-weight: 600; padding: 3px 10px; border-radius: 20px; }
.quote-box { display: grid; gap: 20px; margin-top: 24px; padding: 22px; border: 1px dashed var(--line); border-radius: var(--radius); }
@media (min-width: 720px) { .quote-box { grid-template-columns: 1fr 1fr; } }
.quote-box p { margin: 0; color: var(--ink-2); }

.float-cta { position: fixed; right: 16px; bottom: 16px; z-index: 30; background: var(--brand); color: var(--brand-ink); text-decoration: none; font-weight: 600; padding: 12px 18px; border-radius: 30px; box-shadow: 0 8px 24px rgba(0,0,0,.18); opacity: 0; transform: translateY(20px); pointer-events: none; transition: opacity .25s, transform .25s; }
.float-cta.show { opacity: 1; transform: none; pointer-events: auto; }
@media (min-width: 900px) { .float-cta { display: none; } }

.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@keyframes draw { to { stroke-dashoffset: 0; } }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } .tab-panel, .spark .line { animation: none; stroke-dashoffset: 0; } .bars .fill, .stack span { transition: none; } html { scroll-behavior: auto; } }
@media (max-width: 640px) { .btn-sm { margin-left: 0; } .bars .row { grid-template-columns: 96px 1fr 48px; } }
@media (max-width: 640px) {
  .tabs button { font-size: .78rem; padding: 8px 4px; }
  .pc-head { flex-wrap: wrap; gap: 6px; }
  .assure { justify-content: flex-start; flex-direction: column; align-items: flex-start; padding-left: 4px; }
  .hero .btn-row .btn { width: 100%; text-align: center; }
}