/* invencore.in. Square corners and ruled lines, after the app's own boxy ledger look. */

:root {
  --ink: #13262c;
  --ink-2: #2b4249;
  --muted: #566a70;
  --paper: #fbf9f2;
  --paper-2: #f3efe0;
  --surface: #ffffff;
  --rule: #d6dcd6;
  --rule-strong: #8aa3a8;
  --accent: #1f5c6b;
  --accent-hover: #174855;
  --accent-soft: #e3eef0;
  --blue: #3c7fb1;
  --highlight: #ffd54a;
  --ok: #2e7d4f;
  --font: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  --wrap: 1160px;
  --shadow: 6px 6px 0 rgba(19, 38, 44, .12);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 80px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.6 var(--font);
  overflow-x: hidden;
}
body.nav-open { overflow: hidden; }
img, svg { max-width: 100%; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent-hover); }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(2rem, 4.6vw, 3.3rem); font-weight: 700; }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); font-weight: 700; }
h3 { font-size: 1.1rem; font-weight: 600; }
p { margin: 0 0 1em; }
code { font-family: var(--mono); font-size: .88em; background: var(--paper-2); padding: 1px 5px; border: 1px solid var(--rule); }
mark { background: linear-gradient(transparent 55%, var(--highlight) 55%); color: inherit; padding: 0 .1em; }
:focus-visible { outline: 3px solid #e0a200; outline-offset: 2px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.muted { color: var(--muted); }
.small { font-size: .9rem; }
.eyebrow {
  font: 600 .78rem/1 var(--mono);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.lead { font-size: 1.15rem; color: var(--ink-2); max-width: 62ch; }
.skip { position: absolute; left: 8px; top: 8px; transform: translateY(-200%); background: var(--ink); color: #fff; padding: 8px 12px; z-index: 100; }
.skip:focus { transform: none; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 11px 20px;
  border: 2px solid var(--ink);
  background: var(--surface);
  color: var(--ink);
  font: 600 .98rem/1.2 var(--font);
  text-decoration: none;
  cursor: pointer;
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
}
.btn:hover { color: var(--ink); transform: translate(-2px, -2px); box-shadow: 4px 4px 0 var(--ink); }
.btn:active { transform: none; box-shadow: none; }
.btn svg { width: 20px; height: 20px; fill: currentColor; flex: none; }
.btn-primary { background: var(--accent); border-color: var(--ink); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); color: #fff; }
.btn-ghost { background: transparent; }
.btn-light { background: var(--paper); border-color: var(--paper); color: var(--ink); }
.btn-light:hover { box-shadow: 4px 4px 0 var(--highlight); }
.btn-lg { padding: 14px 24px; font-size: 1.05rem; }
.btn-sm { padding: 7px 14px; font-size: .9rem; }
.btn-block { width: 100%; }
@media (prefers-reduced-motion: reduce) { .btn, .btn:hover { transition: none; transform: none; } }

/* Top bar */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(251, 249, 242, .94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.topbar-in { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 1.2rem; }
.brand:hover { color: var(--ink); }
.brand img { display: block; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav a:not(.btn) { padding: 8px 12px; color: var(--ink-2); text-decoration: none; font-weight: 500; border-bottom: 2px solid transparent; white-space: nowrap; }
.nav a:not(.btn):hover { color: var(--ink); border-bottom-color: var(--rule-strong); }
.nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }
.nav-cta { margin-left: 10px; }
.nav-toggle { display: none; background: none; border: 2px solid var(--ink); width: 44px; height: 40px; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; height: 2px; background: var(--ink); margin: 4px 0; transition: transform .2s, opacity .2s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Hero */
.hero {
  padding: 72px 0 56px; border-bottom: 1px solid var(--rule);
  background-image: repeating-linear-gradient(0deg, transparent 0 31px, rgba(138, 163, 168, .14) 31px 32px);
}
.hero-in { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.hero h1 { margin-bottom: 20px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; margin: 28px 0 14px; }
.hero-meta { margin: 0; }

.hero-visual { position: relative; }
.mock { background: var(--surface); border: 2px solid var(--ink); box-shadow: 12px 12px 0 var(--accent); font-size: .86rem; }
.mock-bar { display: flex; align-items: center; gap: 6px; padding: 8px 12px; background: var(--ink); color: #dfe8e9; }
.mock-bar span { width: 10px; height: 10px; border: 1.5px solid #8aa3a8; }
.mock-bar b { margin-left: 8px; font-weight: 500; font-size: .8rem; }
.mock-body { padding: 16px; }
.mock-scan { display: flex; justify-content: space-between; align-items: center; border: 2px solid var(--accent); padding: 9px 12px; font-family: var(--mono); margin-bottom: 14px; background: var(--accent-soft); }
.mock-scan em { font-style: normal; color: var(--muted); font-size: .78rem; }
.mock-cursor::after { content: ""; display: inline-block; width: 2px; height: 1.05em; background: var(--ink); margin-left: 2px; vertical-align: -2px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.mock-table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.mock-table th { text-align: left; font-weight: 600; font-size: .74rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); border-bottom: 1.5px solid var(--ink); padding: 6px 4px; }
.mock-table td { padding: 7px 4px; border-bottom: 1px solid var(--rule); }
.mock-table th:nth-child(n+2), .mock-table td:nth-child(n+2) { text-align: right; }
.mock-new td { background: #fff7d1; animation: flash 2.4s ease-out 1; }
@keyframes flash { 0% { background: var(--highlight); } 100% { background: #fff7d1; } }
.mock-tax { margin: 12px 0 0 auto; width: 62%; font-variant-numeric: tabular-nums; }
.mock-tax div { display: flex; justify-content: space-between; padding: 2px 4px; color: var(--ink-2); }
.mock-tax .mock-total { border-top: 1.5px solid var(--ink); border-bottom: 3px double var(--ink); margin-top: 4px; padding: 6px 4px; font-weight: 700; font-size: 1.05rem; color: var(--ink); }
.mock-pay { display: flex; gap: 6px; margin-top: 16px; align-items: center; flex-wrap: wrap; }
.mock-pay span { border: 1.5px solid var(--rule-strong); padding: 5px 12px; font-size: .8rem; }
.mock-pay .on { border-color: var(--accent); background: var(--accent); color: #fff; }
.mock-pay b { margin-left: auto; background: var(--ink); color: #fff; padding: 7px 14px; font-weight: 600; font-size: .82rem; }
.mock-stamp {
  position: absolute; right: -14px; top: -22px; transform: rotate(6deg);
  border: 2.5px solid #b0322a; color: #b0322a; background: rgba(255, 255, 255, .85);
  padding: 6px 12px; font: 700 .9rem/1.2 var(--mono); letter-spacing: .08em; text-align: center;
}
.mock-stamp small { font-weight: 500; font-size: .7rem; letter-spacing: 0; }
@media (prefers-reduced-motion: reduce) { .mock-cursor::after, .mock-new td { animation: none; } }

/* Strip */
.strip { background: var(--ink); color: #dfe8e9; }
.strip-in { display: grid; grid-template-columns: repeat(4, 1fr); }
.strip-in div { padding: 22px 20px; border-left: 1px solid rgba(223, 232, 233, .16); display: flex; flex-direction: column; }
.strip-in div:first-child { border-left: 0; padding-left: 0; }
.strip b { font-size: 1.15rem; color: #fff; }
.strip span { font-size: .9rem; color: #a9bcc0; }

/* Sections */
.section { padding: 84px 0; }
.band { background: var(--paper-2); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.band-dark { background: var(--ink); color: #dfe8e9; border: 0; }
.band-dark h2 { color: #fff; }
.band-dark .eyebrow { color: var(--highlight); }
.band-dark .ticks li::before { border-color: var(--highlight); }
.band-dark .ticks b { color: #fff; }
.section-head { max-width: 680px; margin-bottom: 40px; }
.section-head p { color: var(--ink-2); font-size: 1.08rem; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 2px solid var(--ink); border-left: 1px solid var(--rule); }
.card { padding: 28px 26px; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); background: var(--surface); }
.card p { color: var(--ink-2); margin: 0; }
.card.flat { background: transparent; }
.card-icon { width: 40px; height: 40px; display: grid; place-items: center; border: 2px solid var(--ink); font: 700 1.2rem/1 var(--mono); margin-bottom: 16px; background: var(--highlight); }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.split p { color: inherit; opacity: .92; }
.ticks { list-style: none; padding: 0; margin: 0 0 28px; }
.ticks li { position: relative; padding: 9px 0 9px 32px; border-bottom: 1px dashed var(--rule-strong); }
.band-dark .ticks li { border-bottom-color: rgba(223, 232, 233, .2); }
.ticks li::before { content: ""; position: absolute; left: 4px; top: 15px; width: 12px; height: 7px; border-left: 2.5px solid var(--accent); border-bottom: 2.5px solid var(--accent); transform: rotate(-45deg); }

.ledger { background: var(--surface); border: 2px solid var(--ink); box-shadow: var(--shadow); font-variant-numeric: tabular-nums; }
.ledger-head { display: flex; justify-content: space-between; background: var(--accent); color: #fff; padding: 10px 16px; font: 600 .85rem/1.2 var(--mono); letter-spacing: .04em; }
.ledger-row { display: flex; justify-content: space-between; gap: 16px; padding: 10px 16px; border-bottom: 1px solid var(--rule); font-size: .93rem; }
.ledger-row span:last-child { font-family: var(--mono); white-space: nowrap; }
.ledger-row:nth-child(odd) { background: #faf6e6; }
.ledger-row.total { font-weight: 700; border-top: 1.5px solid var(--ink); border-bottom: 3px double var(--ink); background: #fff7d1; }

.devices { display: flex; flex-direction: column; align-items: center; gap: 0; }
.dev { border: 2px solid #dfe8e9; padding: 14px 16px; text-align: center; font-weight: 600; color: #fff; background: rgba(255, 255, 255, .04); min-width: 130px; }
.dev small { display: block; font-weight: 400; color: #a9bcc0; font-size: .8rem; }
.dev-pc { background: var(--highlight); color: var(--ink); border-color: var(--highlight); padding: 18px 30px; }
.dev-pc small { color: var(--ink-2); }
.dev-links { display: flex; justify-content: space-between; width: 70%; height: 44px; position: relative; }
.dev-links::before { content: ""; position: absolute; left: 0; right: 0; top: 50%; border-top: 2px dashed #8aa3a8; }
.dev-links span { width: 2px; background: repeating-linear-gradient(#8aa3a8 0 4px, transparent 4px 8px); }
.dev-row { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; }
.dev-phone { min-width: 96px; border-radius: 0; border-width: 2px 2px 6px; }

.cta-final { background: var(--highlight); border-top: 2px solid var(--ink); padding: 64px 0; }
.cta-final-in { display: flex; justify-content: space-between; align-items: center; gap: 32px; flex-wrap: wrap; }
.cta-final h2 { margin-bottom: 8px; }
.cta-final p { margin: 0; max-width: 56ch; color: var(--ink-2); }
.cta-final .cta-row { margin: 0; }

/* Inner pages */
.page-head { padding: 64px 0 40px; border-bottom: 1px solid var(--rule); }
.page-head h1 { max-width: 20ch; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.chips a { border: 1.5px solid var(--ink); padding: 6px 14px; text-decoration: none; color: var(--ink); background: var(--surface); font-weight: 500; font-size: .92rem; }
.chips a:hover { background: var(--highlight); color: var(--ink); }

.feature-group { padding: 56px 0; border-bottom: 1px solid var(--rule); }
.feature-group:nth-of-type(even) { background: var(--paper-2); }
.feature-group-in { display: grid; grid-template-columns: 280px 1fr; gap: 48px; }
.feature-group-head { position: sticky; top: 96px; align-self: start; }
.feature-group-head p { color: var(--muted); }
.feature-list { margin: 0; display: grid; grid-template-columns: 1fr 1fr; border-top: 2px solid var(--ink); }
.feature-list div { padding: 18px 20px 18px 0; border-bottom: 1px solid var(--rule); }
.feature-list div:nth-child(odd) { padding-right: 28px; }
.feature-list dt { font-weight: 600; margin-bottom: 4px; }
.feature-list dd { margin: 0; color: var(--ink-2); font-size: .96rem; }

/* Download */
.dl-section { padding-top: 48px; }
.dl-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 24px; align-items: start; }
.dl-card { background: var(--surface); border: 2px solid var(--ink); padding: 26px; box-shadow: var(--shadow); min-width: 0; }
.dl-main { border-top: 8px solid var(--accent); }
.dl-demo { border-style: dashed; box-shadow: none; background: #fffdf3; }
.dl-card-head { display: flex; gap: 16px; align-items: center; margin-bottom: 20px; }
.dl-card-head h2 { font-size: 1.35rem; margin: 0 0 2px; }
.dl-card-head p { margin: 0; }
.dl-os { width: 44px; height: 44px; fill: var(--accent); flex: none; }
.dl-meta { margin: 20px 0 8px; font-size: .9rem; }
.dl-meta div { display: grid; grid-template-columns: 82px 1fr; gap: 12px; padding: 8px 0; border-top: 1px solid var(--rule); }
.dl-meta dt { color: var(--muted); font-weight: 500; }
.dl-meta dd { margin: 0; min-width: 0; }
.hash { display: inline-block; max-width: 100%; overflow-wrap: anywhere; word-break: break-all; font-size: .76rem; }
.copy { border: 1px solid var(--rule-strong); background: var(--paper); font: 500 .78rem var(--font); padding: 2px 8px; cursor: pointer; margin-top: 4px; }
.copy:hover { background: var(--highlight); }
.note { background: #fff7d1; border-left: 4px solid var(--highlight); padding: 10px 14px; font-size: .9rem; margin: 12px 0 0; }
.qr-row { display: flex; gap: 18px; align-items: center; margin-bottom: 18px; }
.qr { width: 128px; height: 128px; flex: none; border: 2px solid var(--ink); background: #fff; }
.qr svg { display: block; width: 100%; height: 100%; }
.qr-row p { margin: 0; }
.is-android .qr-row { display: none; }

.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); counter-reset: step; border-top: 2px solid var(--ink); }
.steps li { counter-increment: step; padding: 24px 22px 8px 0; border-right: 1px solid var(--rule); padding-left: 22px; }
.steps li:first-child { padding-left: 0; }
.steps li:last-child { border-right: 0; }
.steps li::before { content: counter(step, decimal-leading-zero); display: block; font: 700 1.6rem/1 var(--mono); color: var(--accent); margin-bottom: 12px; }
.steps p { color: var(--ink-2); font-size: .95rem; }

.faq details { border-top: 1px solid var(--rule-strong); padding: 4px 0; max-width: 820px; }
.faq details:last-child { border-bottom: 1px solid var(--rule-strong); }
.faq summary { cursor: pointer; font-weight: 600; padding: 14px 0; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 700 1.3rem/1 var(--mono); color: var(--accent); }
.faq details[open] summary::after { content: "−"; }
.faq details p { color: var(--ink-2); margin: 0 0 16px; max-width: 70ch; }

/* Changelog */
.timeline { list-style: none; margin: 0 0 32px; padding: 0; border-left: 2px solid var(--ink); max-width: 860px; }
.timeline li { position: relative; padding: 0 0 26px 30px; }
.timeline li::before { content: ""; position: absolute; left: -7px; top: 6px; width: 12px; height: 12px; background: var(--paper); border: 2px solid var(--ink); }
.timeline li.latest::before { background: var(--highlight); }
.tl-meta { display: flex; align-items: baseline; gap: 12px; margin-bottom: 4px; flex-wrap: wrap; }
.tl-meta b { font: 700 1.05rem var(--mono); }
.tl-meta time { color: var(--muted); font-size: .9rem; }
.tag { background: var(--accent); color: #fff; font: 600 .7rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; padding: 4px 8px; }
.timeline p { margin: 0; color: var(--ink-2); }

/* Contact */
.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
@media (max-width: 1100px) { .contact-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-card { display: block; background: var(--surface); border: 2px solid var(--ink); padding: 26px; text-decoration: none; color: var(--ink); box-shadow: var(--shadow); }
.contact-card:hover { color: var(--ink); box-shadow: 10px 10px 0 var(--highlight); }
.contact-card h2 { font-size: 1.3rem; }
.contact-card p { color: var(--ink-2); overflow-wrap: anywhere; }

.page-404 { padding: 120px 0; }

/* Online store */
.store-visual { display: flex; flex-direction: column; align-items: center; gap: 0; }
.shop-card { display: grid; grid-template-columns: 1fr 1fr; width: min(420px, 100%); background: var(--surface); border: 2px solid var(--ink); box-shadow: 12px 12px 0 var(--highlight); }
.shop-photo { aspect-ratio: 4 / 5; display: grid; place-items: end start; padding: 12px; border-right: 2px solid var(--ink);
  background:
    radial-gradient(ellipse 34% 8% at 50% 88%, rgba(19, 38, 44, .18), transparent 70%),
    linear-gradient(160deg, #e3eef0, #c9dde1); position: relative; }
.shop-photo::before { content: ""; position: absolute; left: 22%; right: 22%; top: 20%; bottom: 18%; background: var(--accent);
  clip-path: polygon(30% 0, 70% 0, 100% 18%, 88% 34%, 80% 28%, 80% 100%, 20% 100%, 20% 28%, 12% 34%, 0 18%); }
.shop-photo span { position: relative; font: 600 .7rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); }
.shop-info { padding: 18px 16px; display: flex; flex-direction: column; gap: 8px; }
.shop-info b { font-size: 1.05rem; }
.shop-price { font: 700 1.3rem/1 var(--font); }
.shop-dots { display: flex; gap: 6px; }
.shop-dots i { width: 16px; height: 16px; border: 1.5px solid var(--ink); }
.shop-stock { font-size: .8rem; color: var(--ok); font-weight: 500; }
.shop-btn { margin-top: auto; background: var(--ink); color: #fff; text-align: center; padding: 9px; font-weight: 600; font-size: .88rem; }
.flow-arrow { height: 64px; width: 2px; background: repeating-linear-gradient(var(--ink) 0 5px, transparent 5px 10px); position: relative; }
.flow-arrow::after { content: ""; position: absolute; left: -6px; bottom: -2px; border: 7px solid transparent; border-top-color: var(--ink); border-bottom: 0; }
.flow-arrow span { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); white-space: nowrap; font: 500 .75rem/1 var(--mono); color: var(--muted); }
.store-inv { width: min(420px, 100%); }
.store-head .split { align-items: center; }

/* Footer */
.footer { background: var(--ink); color: #a9bcc0; padding: 56px 0 0; font-size: .93rem; }
.footer-in { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; padding-bottom: 40px; }
.footer .brand { color: #fff; margin-bottom: 12px; }
.footer h4 { color: #fff; font-size: .82rem; text-transform: uppercase; letter-spacing: .1em; font-family: var(--mono); margin-bottom: 14px; }
.footer a:not(.brand) { display: block; color: #dfe8e9; text-decoration: none; padding: 3px 0; overflow-wrap: anywhere; }
.footer a:not(.brand):hover { color: var(--highlight); }
.footer a.footer-inline { display: inline; padding: 0; color: inherit; text-decoration: underline; text-underline-offset: 2px; }
.footer a.footer-inline:hover { color: var(--highlight); }
.footer-brand p { max-width: 36ch; }
.footer .muted { color: #8aa3a8; }
.footer-base { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; border-top: 1px solid rgba(223, 232, 233, .14); padding-top: 18px; padding-bottom: 24px; font-size: .8rem; color: #8aa3a8; }
.footer-legal { flex-basis: 100%; font-size: .76rem; color: #8aa3a8; overflow-wrap: anywhere; }

/* Toast */
.toast { position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px); opacity: 0; background: var(--ink); color: #fff; padding: 12px 20px; border-left: 4px solid var(--highlight); z-index: 200; transition: opacity .25s, transform .25s; max-width: calc(100vw - 32px); }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* Responsive */
@media (max-width: 1000px) {
  .hero-in, .split { grid-template-columns: 1fr; gap: 48px; }
  .split-rev > :first-child { order: 2; }
  .hero-visual { max-width: 560px; margin-right: 14px; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .feature-group-in { grid-template-columns: 1fr; gap: 20px; }
  .feature-group-head { position: static; }
  .steps { grid-template-columns: 1fr 1fr; }
  .steps li:nth-child(2) { border-right: 0; }
  .steps li:nth-child(3) { padding-left: 0; }
  .footer-in { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 1240px) and (min-width: 1081px) { .nav a:not(.btn) { padding: 8px 9px; } }
@media (max-width: 1080px) {
  .nav-toggle { display: block; }
  .nav {
    position: fixed; inset: 68px 0 0 0; background: var(--paper);
    flex-direction: column; align-items: stretch; gap: 0; padding: 12px 16px;
    display: none;
  }
  .nav.open { display: flex; animation: navin .18s ease-out; }
  .nav a:not(.btn) { padding: 14px 4px; border-bottom: 1px solid var(--rule); font-size: 1.1rem; }
  .nav a[aria-current="page"] { border-bottom-color: var(--accent); }
  .nav-cta { margin: 18px 0 0; padding: 14px; }
  .dl-grid { grid-template-columns: 1fr; }
  .strip-in { grid-template-columns: 1fr 1fr; }
  .strip-in div { border-left: 0; padding-left: 0; border-top: 1px solid rgba(223, 232, 233, .16); }
  .strip-in div:nth-child(-n+2) { border-top: 0; }
}
@keyframes navin { from { opacity: 0; transform: translateY(-8px); } }
@media (prefers-reduced-motion: reduce) { .nav.open { animation: none; } }
@media (max-width: 640px) {
  .wrap { padding-left: 16px; padding-right: 16px; }
  .section { padding: 56px 0; }
  .hero { padding: 44px 0 40px; }
  .hero-visual { margin-right: 10px; }
  .mock { box-shadow: 8px 8px 0 var(--accent); font-size: .78rem; }
  .mock-tax { width: 100%; }
  .mock-stamp { right: -6px; top: -26px; font-size: .78rem; }
  .cta-row .btn { width: 100%; }
  .grid-3 { grid-template-columns: 1fr; }
  .feature-list { grid-template-columns: 1fr; }
  .feature-list div, .feature-list div:nth-child(odd) { padding-right: 0; }
  .steps { grid-template-columns: 1fr; }
  .steps li, .steps li:first-child, .steps li:nth-child(3) { padding: 20px 0 4px; border-right: 0; border-bottom: 1px solid var(--rule); }
  .dl-card { padding: 20px; }
  .dl-meta div { grid-template-columns: 1fr; gap: 2px; }
  .qr-row { flex-direction: column; align-items: flex-start; }
  .ledger-row { font-size: .84rem; padding: 9px 12px; }
  .footer-in { grid-template-columns: 1fr; }
  .cta-final-in .cta-row { width: 100%; }
}

/* Terms & Privacy */
.legal { max-width: 760px; }
.legal h2 { margin: 56px 0 20px; padding-top: 24px; border-top: 2px solid var(--ink); }
.legal h2:first-child { margin-top: 0; }
.legal h3 { margin: 32px 0 10px; }
.legal p, .legal li { color: var(--ink-2); }
.legal ul { padding-left: 20px; margin: 0 0 1em; }
.legal li { margin-bottom: 8px; }
.legal-facts { margin: 0; border-top: 1px solid var(--rule-strong); }
.legal-facts div { display: grid; grid-template-columns: 180px 1fr; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--rule); }
.legal-facts dt { font-weight: 600; }
.legal-facts dd { margin: 0; color: var(--ink-2); overflow-wrap: anywhere; }
@media (max-width: 640px) { .legal-facts div { grid-template-columns: 1fr; gap: 2px; } }

/* Guides */
.guide-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.guide-card { display: flex; flex-direction: column; gap: 10px; background: var(--surface); border: 2px solid var(--ink); padding: 26px; text-decoration: none; color: var(--ink); box-shadow: var(--shadow); }
.guide-card:hover { color: var(--ink); box-shadow: 10px 10px 0 var(--highlight); }
.guide-card h2 { font-size: 1.3rem; margin: 0; }
.guide-card p { color: var(--ink-2); margin: 0; }
.guide-meta { font: 500 .82rem var(--mono); color: var(--muted); margin-top: auto; }
.page-head .guide-meta { display: block; margin-top: 14px; }
.guide-title { max-width: 26ch; font-size: clamp(1.9rem, 4vw, 2.9rem); }
.crumbs { font: 500 .85rem var(--mono); margin-bottom: 14px; }
.crumbs a { text-decoration: none; }
.crumbs a::before { content: "← "; }
.prose .lead { margin-bottom: 1.5em; }
.prose ol { padding-left: 22px; margin: 0 0 1em; }
.prose ol li { margin-bottom: 8px; color: var(--ink-2); }
.prose code { font-family: var(--mono); font-size: .9em; background: var(--accent-soft); padding: 1px 5px; }
.guide-callout { border-left: 4px solid var(--highlight); background: #fff7d1; padding: 14px 18px; font: 600 1.05rem var(--mono); color: var(--ink) !important; }
.guide-note { margin-top: 40px; padding: 14px 18px; border: 1px dashed var(--rule-strong); font-size: .9rem; }
.guide-table { width: 100%; border-collapse: collapse; margin: 0 0 1.2em; font-size: .95rem; }
.guide-table th { text-align: left; font-size: .76rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); border-bottom: 2px solid var(--ink); padding: 8px 10px 8px 0; }
.guide-table td { padding: 10px 10px 10px 0; border-bottom: 1px solid var(--rule); color: var(--ink-2); vertical-align: top; }
@media (max-width: 760px) { .guide-grid { grid-template-columns: 1fr; } }
@media (max-width: 560px) {
  .guide-table, .guide-table tbody, .guide-table tr, .guide-table td { display: block; width: 100%; }
  .guide-table thead { display: none; }
  .guide-table tr { padding: 10px 0; border-bottom: 1px solid var(--rule); }
  .guide-table td { border: 0; padding: 2px 0; }
  .guide-table td:first-child { font-weight: 600; color: var(--ink); }
}