/* FrameForge website — crimson · square corners · flat colours (no gradients) */
:root {
  --crimson: #dc143c;
  --crimson-hover: #f02a52;
  --crimson-tint: #2a0b12;
  --bg: #0d0d0f;
  --surface: #151518;
  --surface-2: #1c1c20;
  --line: #2a2a30;
  --line-2: #3a3a42;
  --text: #f2f2f4;
  --muted: #a3a3ad;
  --dim: #6c6c76;
  --good: #3ccf7a;
  --warn: #f2b33d;
  --sans: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --display: "Space Grotesk", "Inter", "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", Consolas, ui-monospace, monospace;
}
* { box-sizing: border-box; border-radius: 0 !important; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: var(--text); text-decoration: underline; text-decoration-color: var(--crimson); text-underline-offset: 3px; }
a:hover { color: var(--crimson-hover); }
code { font-family: var(--mono); font-size: .88em; background: var(--surface-2); border: 1px solid var(--line); padding: 1px 6px; }
:focus-visible { outline: 2px solid var(--crimson); outline-offset: 2px; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.muted { color: var(--muted); }
.dim { color: var(--dim); }
.crimson { color: var(--crimson); }
.small { font-size: 13.5px; }

/* header */
.site-header { position: sticky; top: 0; z-index: 50; background: var(--bg); border-bottom: 1px solid var(--line); }
.nav-bar { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font: 700 18px var(--display); text-decoration: none; }
.brand:hover { color: var(--text); }
.brand-mark { width: 30px; height: 30px; background: var(--crimson); color: #fff; display: grid; place-items: center; font: 800 13px var(--mono); }
.nav-links { display: flex; gap: 26px; align-items: center; }
.nav-links a { color: var(--muted); font-size: 14.5px; text-decoration: none; }
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a.btn { color: #fff; }
.nav-toggle { display: none; background: none; border: 1px solid var(--line-2); color: var(--text); padding: 6px 12px; font: inherit; cursor: pointer; }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 13px 22px; font: 600 15px var(--sans); border: 1px solid var(--line-2); background: var(--surface-2); color: var(--text); text-decoration: none; cursor: pointer; }
.btn:hover { border-color: var(--muted); color: var(--text); }
.btn-primary { background: var(--crimson); border-color: var(--crimson); color: #fff; }
.btn-primary:hover { background: var(--crimson-hover); border-color: var(--crimson-hover); color: #fff; }
.btn-lg { padding: 16px 28px; font-size: 16.5px; }
.btn-sm { padding: 8px 14px; font-size: 13.5px; }

/* type */
h1, h2, h3, h4 { font-family: var(--display); line-height: 1.12; margin: 0 0 14px; letter-spacing: -.5px; }
h1 { font-size: clamp(38px, 5.4vw, 66px); letter-spacing: -1.6px; }
h2 { font-size: clamp(28px, 3.5vw, 42px); letter-spacing: -1px; }
h3 { font-size: 20px; letter-spacing: -.2px; }
.lead { font-size: 19px; color: var(--muted); max-width: 720px; }
.eyebrow { display: inline-block; font: 700 12.5px var(--mono); letter-spacing: 2px; text-transform: uppercase; color: var(--crimson); margin-bottom: 14px; }
.section-head { margin-bottom: 40px; max-width: 840px; }
section { padding: 92px 0; border-bottom: 1px solid var(--line); }
.section-tight { padding: 60px 0; }
.section-alt { background: var(--surface); }

/* hero */
.hero { padding: 84px 0 76px; }
.hero-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 56px; align-items: center; }
.hero h1 .crimson { display: block; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 30px; }
.hero-meta { display: flex; gap: 22px; flex-wrap: wrap; margin-top: 18px; color: var(--dim); font-size: 14px; }
.hero-meta span::before { content: "■"; color: var(--crimson); margin-right: 8px; font-size: 10px; vertical-align: 2px; }

/* app window mock */
.window { background: var(--surface); border: 1px solid var(--line-2); box-shadow: 0 30px 80px rgba(0,0,0,.55); }
.window-bar { display: flex; align-items: center; justify-content: space-between; height: 34px; padding: 0 12px; border-bottom: 1px solid var(--line); font-size: 12.5px; color: var(--muted); }
.window-bar .ctl { display: flex; gap: 14px; color: var(--dim); font-family: var(--mono); }
.window-body { display: grid; grid-template-columns: 132px 1fr; min-height: 360px; }
.window-side { border-right: 1px solid var(--line); padding: 12px 0; font-size: 12.5px; }
.window-side div { padding: 8px 14px; color: var(--muted); border-left: 3px solid transparent; }
.window-side div.on { color: var(--text); border-left-color: var(--crimson); background: var(--surface-2); }
.window-main { padding: 20px; }
.w-phase { font: 700 11px var(--mono); color: var(--crimson); letter-spacing: 1.2px; text-transform: uppercase; }
.w-title { font: 700 20px var(--display); margin: 6px 0 4px; }
.w-detail { color: var(--muted); font-size: 13px; }
.w-compare { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; border: 1px solid var(--line); margin-top: 16px; }
.w-compare > div { padding: 14px; text-align: center; }
.w-compare .after { background: var(--crimson-tint); }
.w-compare .k { font: 700 10.5px var(--mono); color: var(--dim); text-transform: uppercase; letter-spacing: 1px; }
.w-compare .v { font: 800 30px var(--display); color: var(--muted); }
.w-compare .arrow { color: var(--crimson); font-size: 20px; padding: 0 6px; }
.w-rows { margin-top: 14px; border: 1px solid var(--line); font-size: 12.5px; }
.w-rows div { display: grid; grid-template-columns: 1fr auto auto; gap: 14px; padding: 8px 12px; border-bottom: 1px solid var(--line); }
.w-rows div:last-child { border-bottom: 0; }
.w-rows .b { color: var(--dim); text-decoration: line-through; }
.w-rows .a { color: #fff; font-weight: 600; }
.w-btn { display: inline-block; margin-top: 14px; background: var(--crimson); color: #fff; padding: 9px 14px; font-weight: 600; font-size: 13px; }
.w-caption { font-size: 12px; color: var(--dim); padding: 8px 12px; border-top: 1px solid var(--line); }

/* strips */
.strip { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); background: var(--surface); }
.strip > div { padding: 22px 24px; border-right: 1px solid var(--line); }
.strip > div:last-child { border-right: 0; }
.strip b { display: block; font: 700 17px var(--display); margin-bottom: 4px; }
.strip span { color: var(--muted); font-size: 14px; }

/* grids/cards */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { background: var(--surface); border: 1px solid var(--line); padding: 26px; }
.section-alt .card { background: var(--bg); }
.card h3 { margin-bottom: 8px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card p + p { margin-top: 10px; }
.card-accent { border-top: 3px solid var(--crimson); }
.card-num { font: 800 13px var(--mono); color: var(--crimson); margin-bottom: 14px; display: block; }

/* steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); }
.step { padding: 28px 24px; border-right: 1px solid var(--line); background: var(--surface); }
.step:last-child { border-right: 0; }
.step .n { width: 36px; height: 36px; background: var(--crimson); color: #fff; display: grid; place-items: center; font: 800 15px var(--mono); margin-bottom: 18px; }
.step h3 { font-size: 18px; }
.step p { color: var(--muted); font-size: 14.5px; margin: 0; }

/* benefit rows */
.benefit { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; padding: 40px 0; border-bottom: 1px solid var(--line); }
.benefit:first-child { padding-top: 0; }
.benefit:last-child { border-bottom: 0; padding-bottom: 0; }
.benefit-visual { background: var(--surface); border: 1px solid var(--line); padding: 26px; }
.benefit ul { list-style: none; padding: 0; margin: 18px 0 0; }
.benefit li { padding: 7px 0 7px 26px; position: relative; color: var(--muted); }
.benefit li::before { content: ""; position: absolute; left: 0; top: 18px; width: 12px; height: 2px; background: var(--crimson); }

.list-box { border: 1px solid var(--line); }
.list-box > div { display: grid; grid-template-columns: 34px 1fr; gap: 12px; padding: 14px 16px; border-bottom: 1px solid var(--line); background: var(--bg); }
.list-box > div:last-child { border-bottom: 0; }
.list-box .ic { width: 26px; height: 26px; border: 1px solid var(--crimson); color: var(--crimson); display: grid; place-items: center; font-weight: 800; font-size: 13px; }
.list-box b { display: block; font-size: 15px; }
.list-box span { color: var(--muted); font-size: 13.5px; }

/* local box */
.local-box { border: 2px solid var(--crimson); padding: 26px 22px 22px; position: relative; }
.local-box .tag { position: absolute; top: -12px; left: 18px; background: var(--bg); padding: 0 10px; font: 700 12px var(--mono); color: var(--crimson); letter-spacing: 1.2px; border: 0; }
.local-items { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.local-items div { border: 1px solid var(--line); background: var(--surface); padding: 14px; font-size: 14px; }
.local-items b { display: block; margin-bottom: 4px; }
.local-items span { color: var(--muted); font-size: 13px; }
.no-cloud { margin-top: 16px; display: flex; gap: 18px; flex-wrap: wrap; font-size: 13.5px; color: var(--dim); }
.no-cloud span::before { content: "✕ "; color: var(--crimson); font-weight: 800; }

/* evidence */
.quote { border-left: 3px solid var(--crimson); padding: 4px 0 4px 18px; margin: 0; }
.quote p { font-size: 17px; color: var(--text); margin: 0 0 8px; }
.quote cite { font-style: normal; color: var(--dim); font-size: 13.5px; }
.status-box { border: 1px solid var(--line-2); border-left: 3px solid var(--warn); background: var(--surface); padding: 18px 20px; }
.status-box b { color: var(--text); }
.status-box p { margin: 0; color: var(--muted); font-size: 15px; }
.status-box p + p { margin-top: 8px; }

/* tables */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); background: var(--surface); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font: 600 12px var(--mono); color: var(--dim); text-transform: uppercase; letter-spacing: .8px; background: var(--surface-2); white-space: nowrap; }
tr:last-child td { border-bottom: none; }
td.name { font-weight: 600; white-space: nowrap; }
tr.ours td { background: var(--crimson-tint); }
tr.ours td.name { color: #fff; }
.yes { color: var(--good); font-weight: 700; }
.no { color: var(--crimson); font-weight: 700; }
.part { color: var(--warn); font-weight: 700; }

.tag { display: inline-block; font: 600 11px var(--mono); padding: 3px 8px; border: 1px solid var(--line-2); color: var(--muted); margin: 2px 4px 2px 0; }
.tag-crimson { border-color: var(--crimson); color: #ff8aa0; }
.tag-good { border-color: #1f5e3a; color: var(--good); }
.tag-warn { border-color: #6a4f17; color: var(--warn); }

/* faq */
.faq { border: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); background: var(--surface); }
.faq details:last-child { border-bottom: 0; }
.faq summary { padding: 18px 22px; cursor: pointer; font-weight: 600; font-size: 16.5px; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--crimson); font: 800 20px var(--mono); line-height: 1; }
.faq details[open] summary::after { content: "−"; }
.faq details p { padding: 0 22px 20px; margin: 0; color: var(--muted); max-width: 860px; }

/* requirements */
.req { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); }
.req > div { padding: 26px; background: var(--surface); }
.req > div:first-child { border-right: 1px solid var(--line); }
.req dl { display: grid; grid-template-columns: 150px 1fr; gap: 10px 16px; margin: 14px 0 0; font-size: 14.5px; }
.req dt { color: var(--dim); }
.req dd { margin: 0; }

/* cta/footer */
.cta { border: 2px solid var(--crimson); padding: 48px; background: var(--surface); display: grid; grid-template-columns: 1.3fr 1fr; gap: 32px; align-items: center; }
.cta h2 { margin-bottom: 10px; }
.cta-actions { display: flex; flex-direction: column; gap: 10px; align-items: flex-start; }
.site-footer { padding: 32px 0; color: var(--dim); font-size: 13.5px; }
.footer-row { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer-row a { color: var(--muted); }
.sources { font-size: 13.5px; color: var(--muted); padding-left: 20px; margin: 0; }
.sources li { margin: 6px 0; }

/* download section */
.section-download { border-top: 1px solid var(--line); }
.download-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-bottom: 32px; }
.download-card { border: 1px solid var(--line); background: var(--surface); padding: 32px; display: flex; flex-direction: column; position: relative; }
.download-card.card-featured { border: 2px solid var(--crimson); background: var(--surface); }
.download-card-badge { position: absolute; top: 0; right: 0; background: var(--crimson); color: #fff; font: 700 11px var(--mono); padding: 4px 10px; letter-spacing: 1px; }
.download-card-badge.badge-alt { background: var(--surface-2); color: var(--muted); border-left: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.download-card-header { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }
.download-icon { width: 44px; height: 44px; background: var(--surface-2); border: 1px solid var(--line-2); display: grid; place-items: center; font: 800 13px var(--mono); color: var(--crimson); flex-shrink: 0; }
.card-featured .download-icon { background: var(--crimson); color: #fff; border-color: var(--crimson); }
.download-card-header h3 { margin: 0 0 4px; font-size: 21px; }
.download-desc { font-size: 14.5px; color: var(--muted); margin: 0 0 20px; flex-grow: 1; }
.download-meta-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; padding: 14px 16px; background: var(--bg); border: 1px solid var(--line); margin-bottom: 24px; font-size: 13px; }
.download-meta-list .meta-label { color: var(--dim); display: block; font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: .5px; margin-bottom: 2px; }
.download-meta-list span:last-child { font-weight: 600; color: var(--text); }
.btn-block { width: 100%; justify-content: center; text-align: center; font-size: 15.5px; }
.btn-icon { font-size: 16px; line-height: 1; }
.checksum-box { margin-top: 16px; padding: 12px 14px; background: var(--bg); border: 1px solid var(--line); font-size: 12px; }
.checksum-label { display: block; color: var(--dim); font-family: var(--mono); font-size: 11px; text-transform: uppercase; margin-bottom: 6px; letter-spacing: .5px; }
.checksum-code { display: block; font-size: 11.5px; word-break: break-all; color: var(--muted); cursor: pointer; user-select: all; transition: color .15s; }
.checksum-code:hover { color: #fff; }
.checksum-code.copied { color: var(--good); }

/* install guide */
.install-guide { border: 1px solid var(--line); background: var(--surface); padding: 32px; margin-bottom: 24px; }
.install-guide h3 { margin-bottom: 20px; font-size: 19px; }
.guide-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.guide-step { display: flex; gap: 14px; align-items: flex-start; }
.guide-num { width: 28px; height: 28px; background: var(--crimson); color: #fff; font: 700 13px var(--mono); display: grid; place-items: center; flex-shrink: 0; }
.guide-step strong { display: block; font-size: 15px; margin-bottom: 4px; }
.guide-step p { margin: 0; line-height: 1.45; }

.download-footer-note { font-size: 14px; color: var(--muted); text-align: center; padding-top: 12px; }

@media (max-width: 1000px) {
  .hero-grid, .benefit, .cta, .req { grid-template-columns: 1fr; }
  .req > div:first-child { border-right: 0; border-bottom: 1px solid var(--line); }
  .steps, .strip { grid-template-columns: 1fr 1fr; }
  .step:nth-child(2), .strip > div:nth-child(2) { border-right: 0; }
  .step:nth-child(-n+2), .strip > div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .grid-3, .download-grid, .guide-steps { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  section { padding: 60px 0; }
  .nav-links { display: none; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; background: var(--bg); padding: 16px 24px; border-bottom: 1px solid var(--line); align-items: flex-start; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .grid-2, .grid-3, .steps, .strip, .local-items, .download-grid, .guide-steps, .download-meta-list { grid-template-columns: 1fr; }
  .step, .strip > div { border-right: 0 !important; border-bottom: 1px solid var(--line); }
  .window-body { grid-template-columns: 1fr; }
  .window-side { display: none; }
  .cta, .download-card, .install-guide { padding: 28px 20px; }
  .req dl { grid-template-columns: 1fr; gap: 2px 0; }
  .req dd { margin-bottom: 8px; }
  .lead { font-size: 17px; }
}