/* Kapnova site v2. Committed two-world look: navy "decision room" sections and light "product canvas" sections.
   Layout: asymmetric 12-col grid, type as the main visual, mono annotations as the science layer. */
:root {
  color-scheme: dark;
  --ink: #0E1B2C;          /* product ink, page ground */
  --ink-2: #12253D;        /* product ink-panel */
  --ink-3: #1A2F4D;
  --line-d: #263A55;
  --fg-d: #F3F5FA;
  --soft-d: #B4C1D2;
  --mute-d: #7F93AB;
  --indigo: #4C5FD5;       /* product primary */
  --indigo-lt: #8E9CF3;
  --gold: #CDA95E;         /* product accent-gold: value and learning only */
  --gold-lt: #EBD7A6;
  --coral: #F08A5B;
  --green: #4FC1A0;
  --canvas-a: #E3E2F4;     /* product canvas gradient */
  --canvas-b: #ECF1EB;
  --fg-l: #0E1B2C;
  --slate-l: #33455A;
  --mute-l: #6E8296;
  --line-l: #CDD5DE;
  --gold-ink: #94722A;     /* gold for text on light grounds */
  --paper: #F5F6FA;
  --card-l: #FFFFFF;
  --f-sans: "Instrument Sans", "Helvetica Neue", Arial, sans-serif;
  --f-mono: "Geist Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --s-hero: clamp(3.2rem, 9.6vw, 9.4rem);
  --s-d1: clamp(2.5rem, 5.2vw, 5.4rem);
  --s-d2: clamp(2rem, 4.2vw, 4.2rem);
  --s-d3: clamp(1.5rem, 2.4vw, 2.3rem);
  --s-lead: clamp(1.25rem, 1.8vw, 1.6rem);
  --s-body: 1.125rem;
  --s-small: 0.875rem;
  --s-mono: 0.78rem;
  --max: 1360px;
}
* { box-sizing: border-box; }
html { background: var(--ink); scroll-behavior: smooth; }
body { margin: 0; background: var(--ink); color: var(--fg-d); font-family: var(--f-sans); font-size: var(--s-body); line-height: 1.5; -webkit-font-smoothing: antialiased; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: 2px; }
img { max-width: 100%; height: auto; display: block; }

/* bands */
.band { position: relative; padding-left: max(20px, env(safe-area-inset-left, 0px)); padding-right: max(20px, env(safe-area-inset-right, 0px)); padding-block: clamp(72px, 10vw, 150px); overflow: hidden; }
.band > .in { max-width: var(--max); margin: 0 auto; position: relative; }
.dark { background: var(--ink); color: var(--fg-d); }
.dark-2 { background: var(--ink-2); color: var(--fg-d); }
.light { background: linear-gradient(160deg, var(--canvas-a) 0%, var(--canvas-b) 100%); color: var(--fg-l); }
.paper { background: var(--paper); color: var(--fg-l); }
.paper .lead, .paper .body { color: var(--slate-l); }
.light .gold, .paper .gold { color: var(--gold-ink); }
.fine { font-size: 0.875rem; line-height: 1.5; color: var(--mute-d); max-width: 52em; }
.light .fine, .paper .fine { color: var(--mute-l); }
.paper .btn-p { background: var(--ink); color: var(--fg-d); } .paper .btn-g { border-color: var(--line-l); color: var(--fg-l); }
.paper .rule-list, .paper .rule-list > li { border-color: var(--line-l); }
.light .mono, .light .note { color: var(--mute-l); }

/* grid */
.g { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: clamp(16px, 2vw, 32px); row-gap: 40px; }
.g > * { min-width: 0; }
.c-12 { grid-column: span 12; } .c-8 { grid-column: span 8; } .c-7 { grid-column: span 7; } .c-6 { grid-column: span 6; } .c-5 { grid-column: span 5; } .c-4 { grid-column: span 4; } .c-3 { grid-column: span 3; }
.s-2 { grid-column-start: 2; } .s-3 { grid-column-start: 3; } .s-5 { grid-column-start: 5; } .s-6 { grid-column-start: 6; } .s-7 { grid-column-start: 7; } .s-8 { grid-column-start: 8; } .s-9 { grid-column-start: 9; }
@media (max-width: 900px) { .g > [class*="c-"] { grid-column: 1 / -1; } }

/* type */
h1, h2, h3, p { margin: 0; }
.hero-t { font-size: var(--s-hero); line-height: 0.9; letter-spacing: -0.045em; font-weight: 500; text-wrap: balance; }
.d1 { font-size: var(--s-d1); line-height: 0.95; letter-spacing: -0.04em; font-weight: 500; text-wrap: balance; }
.d2 { font-size: var(--s-d2); line-height: 1.0; letter-spacing: -0.03em; font-weight: 500; text-wrap: balance; }
.d3 { font-size: var(--s-d3); line-height: 1.12; letter-spacing: -0.02em; font-weight: 500; text-wrap: balance; }
.lead { font-size: var(--s-lead); line-height: 1.45; max-width: 36em; color: var(--soft-d); }
.light .lead { color: var(--slate-l); }
.body { max-width: 34em; color: var(--soft-d); }
.light .body { color: var(--slate-l); }
.mono { font-family: var(--f-mono); font-size: var(--s-mono); letter-spacing: 0.02em; color: var(--mute-d); font-variant-numeric: tabular-nums; }
.tag { font-family: var(--f-mono); font-size: var(--s-mono); text-transform: uppercase; letter-spacing: 0.12em; color: var(--mute-d); }
.light .tag { color: var(--mute-l); }
.gold { color: var(--gold); } .indigo { color: var(--indigo-lt); } .coral { color: var(--coral); }
.light .indigo { color: var(--indigo); }
.num { font-family: var(--f-mono); font-variant-numeric: tabular-nums; letter-spacing: -0.04em; font-weight: 400; }
.note { font-family: var(--f-mono); font-size: 0.72rem; color: var(--mute-d); line-height: 1.5; }
.note b { font-weight: 500; color: inherit; }
sup.fn { font-family: var(--f-mono); font-size: 0.55em; color: var(--gold); margin-left: 0.1em; vertical-align: super; }

/* nav */
.nav { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: rgba(14, 27, 44, 0.86); backdrop-filter: saturate(1.4) blur(10px); -webkit-backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid rgba(38, 58, 85, 0.7); padding-left: max(20px, env(safe-area-inset-left, 0px)); padding-right: max(20px, env(safe-area-inset-right, 0px)); }
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 21; background: var(--ink); }
.nav .in { max-width: var(--max); margin: 0 auto; display: flex; align-items: center; gap: 28px; height: 64px; }
.wordmark { font-weight: 600; font-size: 1.15rem; letter-spacing: -0.02em; text-decoration: none; display: inline-flex; align-items: center; gap: 10px; }
.wordmark i { display: inline-block; width: 9px; height: 9px; border-radius: 50%; background: var(--gold); box-shadow: 14px 0 0 var(--indigo), 28px 0 0 var(--line-d); margin-right: 28px; }
.nav ul { list-style: none; display: flex; gap: 26px; margin: 0 0 0 auto; padding: 0; }
.nav ul a { text-decoration: none; font-size: 0.92rem; color: var(--soft-d); }
.nav ul a:hover, .nav ul a[aria-current] { color: var(--fg-d); }
.btn { display: inline-flex; align-items: center; gap: 10px; font: 500 0.95rem/1 var(--f-sans); padding: 15px 22px; border-radius: 3px; text-decoration: none; border: 1px solid transparent; cursor: pointer; white-space: nowrap; }
.btn-p { background: var(--fg-d); color: var(--ink); }
.btn-p:hover { background: var(--gold-lt); }
.btn-g { border-color: var(--line-d); color: var(--fg-d); background: transparent; }
.btn-g:hover { border-color: var(--soft-d); }
.light .btn-p { background: var(--ink); color: var(--fg-d); }
.light .btn-g { border-color: var(--line-l); color: var(--fg-l); }
.nav .btn { padding: 10px 16px; }
@media (max-width: 1020px) { .nav ul { display: none; } .nav .btn { margin-left: auto; } }

/* rules and lists */
.rule-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line-d); }
.rule-list > li { border-bottom: 1px solid var(--line-d); padding-block: 22px; }
.light .rule-list, .light .rule-list > li { border-color: var(--line-l); }

/* footer: light, so the dark close stands on its own */
.foot { background: var(--paper); color: var(--fg-l); border-top: 1px solid var(--line-l); padding-left: max(20px, env(safe-area-inset-left, 0px)); padding-right: max(20px, env(safe-area-inset-right, 0px)); padding-block: 64px 40px; }
.foot .in { max-width: var(--max); margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
.foot h4 { margin: 0 0 14px; font: 500 0.9rem/1 var(--f-sans); color: var(--mute-l); }
.foot ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.foot a { text-decoration: none; color: var(--slate-l); font-size: 0.95rem; }
.foot a:hover { color: var(--fg-l); }
.foot .wordmark { color: var(--fg-l); }
.foot .wordmark i { box-shadow: 14px 0 0 var(--indigo), 28px 0 0 var(--line-l); }
.foot .fine { color: var(--mute-l); }
.foot .legal { grid-column: 1 / -1; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 28px; border-top: 1px solid var(--line-l); }
@media (max-width: 760px) { .foot .in { grid-template-columns: 1fr 1fr; } .foot .in > div:first-child { grid-column: 1 / -1; } }

/* proto ribbon */
.proto { position: fixed; z-index: 30; left: max(14px, env(safe-area-inset-left, 0px)); bottom: calc(14px + env(safe-area-inset-bottom, 0px)); font: 500 0.8rem/1 var(--f-sans); background: var(--gold); color: var(--ink); padding: 10px 14px; border-radius: 3px; text-decoration: none; }