/* FAQLotus — AI Contextual Answer Runtime
 The Answer Aperture · Signal Pink · Ink · Runtime Black */

:root {
 --ink: #10232E;
 --petal: #FFF5F8;
 --black: #081319;
 --signal: #FF5B93;
 --aqua: #39D7C5;
 --logic: #6D79FF;
 --ai: #B58BFF;
 --ok: #48C98A;
 --wait: #F2B84B;
 --risk: #F05268;
 --card-d: #173541;
 --card-l: #FFFBF8;
 --border-d: #2D5360;
 --border-l: #E4C9D2;
 --title-d: #FFF7FA;
 --title-l: #202530;
 --body-d: #C3D7DC;
 --body-l: #665E67;
 --sans: "Sora", "Segoe UI", sans-serif;
 --mono: "IBM Plex Mono", ui-monospace, monospace;
 --content: min(1180px, calc(100% - 48px));
 --header-h: 56px;
 --r: 8px;
 --r-lg: 14px;
 --r-pill: 999px;
 --shadow: 0 18px 48px rgba(8, 19, 25, 0.35);
 --shadow-soft: 0 10px 28px rgba(16, 35, 46, 0.14);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
 margin: 0;
 font-family: var(--sans);
 color: var(--title-l);
 background: var(--petal);
 line-height: 1.55;
 -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--logic); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
h1, h2, h3, h4 {
 font-family: var(--sans); font-weight: 700; line-height: 1.2;
 margin: 0; letter-spacing: -0.02em; color: inherit;
}
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
input, textarea, select {
 font: inherit; width: 100%; border: 1.5px solid var(--border-l);
 border-radius: 8px; padding: 10px 12px; background: var(--card-l); color: var(--title-l);
}
input::placeholder, textarea::placeholder { color: #8a8290; opacity: 1; }
input:focus, textarea:focus, select:focus {
 outline: 2px solid var(--signal); outline-offset: 1px; border-color: var(--signal);
}
label {
 display: flex; flex-direction: column; gap: 6px;
 font-weight: 600; font-size: 0.92rem; margin-bottom: 12px; color: var(--title-l);
}
[hidden] { display: none !important; }
code, .mono-label { font-family: var(--mono); }
.mono-label {
 display: block; font-size: 0.68rem; font-weight: 600;
 letter-spacing: 0.07em; text-transform: uppercase; color: var(--signal); margin-bottom: 6px;
}

/* ——— Shell ——— */
.site-shell { min-height: 100dvh; display: flex; flex-direction: column; }
main { flex: 1; }
[data-site-header], [data-site-footer] { display: contents; }
.container { width: var(--content); margin: 0 auto; }
#aperture, #docs, #demo { scroll-margin-top: calc(var(--header-h) + 72px); }

/* ——— Announce bar ——— */
.announce-bar {
 width: 100%;
 background: var(--black);
 color: var(--body-d);
 font-size: 0.84rem;
 border-bottom: 1px solid var(--border-d);
}
.announce-bar-inner {
 width: var(--content);
 margin: 0 auto;
 padding: 9px 0;
 text-align: center;
}
.announce-text {
 margin: 0;
 color: var(--body-d);
 line-height: 1.45;
}
.announce-cta {
 color: var(--signal);
 font-weight: 700;
 margin-left: 6px;
 white-space: nowrap;
}
.announce-cta:hover { color: #fff; text-decoration: none; }

/* ——— Dark narrow sticky header ——— */
.site-top { position: sticky; top: 0; z-index: 60; }
.site-header {
 background: var(--ink);
 border-bottom: 1px solid var(--border-d);
}
.header-inner {
 display: flex; align-items: center; gap: 12px;
 min-height: var(--header-h);
 width: var(--content); margin: 0 auto;
}
.brand {
 display: flex; align-items: center; gap: 10px;
 color: var(--title-d); text-decoration: none; flex-shrink: 0;
}
.brand:hover { text-decoration: none; color: var(--title-d); }
.logo-mark { width: 32px; height: 32px; display: grid; place-items: center; flex-shrink: 0; }
.logo-mark svg { width: 32px; height: 32px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.12; }
.brand-text strong { font-size: 1.05rem; font-weight: 800; color: var(--title-d); }
.brand-text span { font-size: 0.62rem; color: var(--body-d); max-width: 28ch; font-weight: 500; }

.nav-main { display: flex; flex-wrap: wrap; gap: 2px 10px; margin-left: auto; }
.nav-link {
 font-size: 0.8rem; font-weight: 600; color: var(--body-d);
 text-decoration: none; padding: 4px 2px; white-space: nowrap;
}
.nav-link:hover { color: var(--title-d); text-decoration: none; }
.nav-link.is-active {
 font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.02em;
 color: var(--title-d); text-decoration: none;
}
.nav-link.is-active .nav-br { color: var(--signal); font-weight: 700; }

.header-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.nav-toggle {
 display: none; font-size: 1.25rem; padding: 4px 8px;
 color: var(--title-d); border-radius: 8px;
}
.nav-toggle:hover { background: rgba(255, 91, 147, 0.14); }
.mobile-nav {
 display: none; flex-direction: column; gap: 8px;
 width: var(--content); margin: 0 auto; padding: 8px 0 14px;
 border-top: 1px solid var(--border-d);
}
.mobile-nav.is-open { display: flex; }
.mobile-nav a {
 font-weight: 600; color: var(--title-d); text-decoration: none; padding: 4px 0;
}

.user-menu { position: relative; }
.user-avatar {
 width: 34px; height: 34px; border-radius: 8px;
 background: var(--signal); color: #fff; font-size: 0.72rem; font-weight: 800;
}
.user-dropdown {
 display: none; position: absolute; right: 0; top: calc(100% + 10px);
 min-width: 220px; background: var(--card-l); border: 1.5px solid var(--border-l);
 border-radius: var(--r); box-shadow: var(--shadow); padding: 8px; flex-direction: column;
 color: var(--title-l);
}
.user-dropdown.is-open { display: flex; }
.user-dropdown a, .user-dropdown button {
 text-align: left; padding: 8px 10px; border-radius: 8px;
 font-size: 0.88rem; font-weight: 600; color: var(--title-l); text-decoration: none;
}
.user-dropdown a:hover, .user-dropdown button:hover { background: var(--petal); }
.user-workspace-label {
 font-size: 0.7rem; color: var(--body-l); padding: 6px 10px 10px;
 border-bottom: 1px solid var(--border-l); margin-bottom: 4px; font-family: var(--mono);
}

/* ——— Buttons ——— */
.btn {
 display: inline-flex; align-items: center; justify-content: center; gap: 6px;
 padding: 10px 16px; border-radius: 8px; font-weight: 700; font-size: 0.9rem;
 text-decoration: none; border: 1.5px solid transparent;
 transition: transform 0.15s, background 0.15s, border-color 0.15s, color 0.15s;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--signal); color: #fff; }
.btn-primary:hover { background: #ff7aa8; color: #fff; }
.btn-line {
 background: transparent; border-color: var(--signal); color: var(--signal);
}
.page-hero--petal .btn-line, .section--petal .btn-line {
 border-color: #c43a6e; color: #c43a6e;
}
.page-hero--ink .btn-line, .section--ink .btn-line,
.page-hero--black .btn-line, .section--black .btn-line,
.home-hero--ink .btn-line {
 border-color: var(--signal); color: var(--signal);
}
.btn-ghost {
 background: transparent; color: var(--title-d);
 border-color: rgba(195, 215, 220, 0.4);
}
.page-hero--petal .btn-ghost, .section--petal .btn-ghost {
 color: var(--title-l); border-color: var(--border-l);
}
.page-hero--ink .btn-ghost, .section--ink .btn-ghost,
.page-hero--black .btn-ghost, .section--black .btn-ghost,
.home-hero--ink .btn-ghost {
 color: var(--title-d); border-color: rgba(255, 247, 250, 0.35);
}
.btn-aqua { background: var(--aqua); color: var(--black); }
.btn-aqua:hover { background: #5ee4d4; color: var(--black); }
.btn-sm { padding: 7px 12px; font-size: 0.82rem; }
.btn-lg { padding: 12px 20px; font-size: 0.95rem; }
.linkish { color: var(--signal); font-weight: 700; text-decoration: underline; }

/* ——— Typography helpers ——— */
.kicker {
 display: inline-flex; font-family: var(--mono); font-size: 0.72rem; font-weight: 600;
 letter-spacing: 0.08em; text-transform: uppercase; color: var(--signal);
}
.section--petal .kicker, .page-hero--petal .kicker { color: #c43a6e; }
.section--ink .kicker, .page-hero--ink .kicker,
.section--black .kicker, .page-hero--black .kicker { color: var(--aqua); }
.lead { color: var(--body-l); max-width: 54ch; }
.section--ink .lead, .page-hero--ink .lead,
.section--black .lead, .page-hero--black .lead,
.home-hero--ink .lead { color: var(--body-d); }
.hint-line { font-family: var(--mono); font-size: 0.76rem; color: var(--aqua); margin-top: 10px; }
.mt-s { margin-top: 8px; }
.mt-m { margin-top: 20px; }

/* ——— Sections & page heroes ——— */
.section { padding: 64px 0; }
.section--petal { background: var(--petal); color: var(--title-l); }
.section--ink {
 background:
 radial-gradient(ellipse 55% 45% at 85% 15%, rgba(255, 91, 147, 0.14), transparent 55%),
 radial-gradient(ellipse 40% 50% at 5% 90%, rgba(57, 215, 197, 0.1), transparent 50%),
 var(--ink);
 color: var(--title-d);
}
.section--black {
 background:
 radial-gradient(ellipse 50% 40% at 10% 0%, rgba(109, 121, 255, 0.14), transparent 50%),
 var(--black);
 color: var(--title-d);
}
.sec-head { margin-bottom: 28px; max-width: 50rem; }
.sec-head h2 { font-size: clamp(1.4rem, 2.5vw, 1.9rem); margin: 8px 0 10px; }
.page-hero { padding: 40px 0 28px; }
.page-hero--ink {
 background:
 radial-gradient(ellipse 50% 40% at 70% 0%, rgba(255, 91, 147, 0.16), transparent 50%),
 var(--ink);
 color: var(--title-d);
}
.page-hero--black {
 background:
 linear-gradient(160deg, rgba(109, 121, 255, 0.14), transparent 45%),
 var(--black);
 color: var(--title-d);
}
.page-hero--petal { background: var(--petal); color: var(--title-l); }
.page-hero-inner h1 {
 font-size: clamp(1.8rem, 3.5vw, 2.55rem); margin: 10px 0 12px; max-width: 22ch;
}
.page-hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }

.how-grid {
 display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 10px;
}
.how-grid li {
 padding: 14px 16px; border-radius: var(--r);
 background: var(--card-l); border: 1px solid var(--border-l);
 font-size: 0.9rem; color: var(--title-l);
}
.section--ink .how-grid li, .section--black .how-grid li {
 background: var(--card-d); border-color: var(--border-d); color: var(--body-d);
}
.section--ink .how-grid li b, .section--black .how-grid li b { color: var(--title-d); }

/* ——— File field (English) ——— */
.file-field { display: block; margin-top: 6px; }
.file-field input[type="file"] {
 position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
 overflow: hidden; clip: rect(0, 0, 0, 0); border: 0;
}
.file-field-ui { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.file-field-btn {
 display: inline-flex; align-items: center; gap: 6px;
 padding: 8px 14px; border-radius: 8px; font-weight: 700; font-size: 0.85rem;
 background: var(--petal); border: 1.5px solid var(--border-l); color: var(--title-l);
}
.file-field-btn:hover { border-color: var(--signal); color: var(--title-l); }
.file-field-name {
 font-size: 0.85rem; color: var(--body-l); font-weight: 500;
 max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.section--ink .file-field-btn, .section--black .file-field-btn {
 background: var(--card-d); border-color: var(--border-d); color: var(--title-d);
}
.section--ink .file-field-name, .section--black .file-field-name { color: var(--body-d); }

/* ——— Footer (Runtime Black) ——— */
.site-footer {
 background: var(--black); color: var(--body-d); margin-top: auto; padding: 48px 0 0;
}
.footer-grid {
 width: var(--content); margin: 0 auto;
 display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; padding-bottom: 36px;
}
.footer-col h4 {
 font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.08em;
 text-transform: uppercase; color: var(--signal); margin-bottom: 12px;
}
.footer-col a {
 color: #9bb0b8; text-decoration: none; font-size: 0.9rem; display: block; padding: 4px 0;
}
.footer-col a:hover { color: #fff; }
.footer-bar { border-top: 1px solid var(--border-d); padding: 20px 0 28px; }
.footer-tag { font-size: 0.88rem; max-width: 48rem; margin-bottom: 14px; color: #7a9199; }
.footer-bar-inner {
 display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px;
 font-size: 0.82rem; color: #6a8088;
}
.footer-legal { display: flex; gap: 14px; flex-wrap: wrap; }
.footer-legal a { color: var(--signal); text-decoration: none; }

/* ——— Keyword chips & tags ——— */
.keyword-strip, .home-keywords, .keyword-row {
 display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0; list-style: none; padding: 0;
}
.keyword-strip li, .home-keywords li, .keyword-row li {
 font-family: var(--mono); font-size: 0.68rem; font-weight: 600;
 letter-spacing: 0.06em; text-transform: uppercase;
 padding: 6px 12px; border-radius: var(--r-pill);
 background: rgba(255, 91, 147, 0.14); color: var(--signal);
 border: 1px solid rgba(255, 91, 147, 0.35);
}
.section--petal .keyword-strip li, .page-hero--petal .keyword-strip li,
.about-layout .keyword-row li {
 background: rgba(255, 91, 147, 0.1); color: #c43a6e; border-color: rgba(255, 91, 147, 0.3);
}
.tag {
 font-family: var(--mono); font-size: 0.62rem; font-weight: 700;
 padding: 2px 6px; border-radius: 4px; letter-spacing: 0.04em; white-space: nowrap;
 display: inline-flex; align-items: center;
}
.tag--ok { background: rgba(72, 201, 138, 0.18); color: var(--ok); }
.tag--warn { background: rgba(242, 184, 75, 0.2); color: #b07a10; }
.tag--err, .tag--risk { background: rgba(240, 82, 104, 0.18); color: var(--risk); }
.tag--ai { background: rgba(181, 139, 255, 0.18); color: #7a4fd4; }
.tag--aqua { background: rgba(57, 215, 197, 0.16); color: #1a9a8c; }
.tag--logic { background: rgba(109, 121, 255, 0.16); color: var(--logic); }
.section--ink .tag--warn, .section--black .tag--warn { color: var(--wait); }
.section--ink .tag--ai, .section--black .tag--ai { color: var(--ai); }
.section--ink .tag--aqua, .section--black .tag--aqua { color: var(--aqua); }

/* ========== HOME: aperture stage ========== */
.home-hero--ink {
 background:
 radial-gradient(ellipse 50% 40% at 50% 0%, rgba(255, 91, 147, 0.18), transparent 55%),
 radial-gradient(ellipse 35% 45% at 100% 70%, rgba(57, 215, 197, 0.12), transparent 45%),
 var(--ink);
 color: var(--title-d); padding: 28px 0 52px;
}
.home-hero-head { text-align: center; margin-bottom: 28px; }
.home-brand {
 font-size: clamp(2rem, 4vw, 2.9rem); font-weight: 800; margin: 0 0 6px;
 color: var(--title-d); letter-spacing: -0.025em;
}
.home-hero-head h1 {
 font-size: clamp(1.65rem, 3.6vw, 2.45rem); max-width: 18ch;
 margin: 10px auto 14px; line-height: 1.18;
}
.home-hero-head .lead { margin: 0 auto 8px; color: rgba(255, 247, 250, 0.9); }
.home-hero-head .page-hero-actions { justify-content: center; }
.home-hero-head .home-keywords { justify-content: center; }

.aperture-stage {
 position: relative;
 border: 1.5px solid var(--border-d);
 border-radius: var(--r-lg);
 background: var(--black);
 overflow: hidden;
 box-shadow: var(--shadow);
 color: var(--title-d);
}
.aperture-rail {
 display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
 gap: 10px; padding: 12px 18px;
 background: linear-gradient(90deg, rgba(255, 91, 147, 0.14), rgba(57, 215, 197, 0.1));
 border-bottom: 1px solid var(--border-d);
 font-family: var(--mono); font-size: 0.78rem;
}
.aperture-rail-label { color: var(--signal); font-weight: 700; }
.aperture-rail-meta { color: var(--body-d); }
.aperture-rail-meta em { font-style: normal; color: var(--aqua); }

.aperture-body {
 display: grid; grid-template-columns: 1fr 1.15fr; min-height: 420px;
}
.aperture-ask {
 padding: 18px; border-right: 1px solid var(--border-d);
 background: rgba(0, 0, 0, 0.28); display: flex; flex-direction: column; gap: 12px;
}
.context-toggles {
 display: flex; flex-wrap: wrap; gap: 8px;
}
.context-toggle {
 padding: 7px 12px; border-radius: var(--r-pill); font-size: 0.78rem; font-weight: 700;
 border: 1px solid var(--border-d); color: var(--body-d); background: var(--card-d);
 transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.context-toggle:hover, .context-toggle.is-active {
 border-color: var(--signal); color: var(--signal);
 background: rgba(255, 91, 147, 0.12);
}
.aperture-question {
 padding: 14px; border-radius: 10px;
 background: var(--card-d); border: 1px solid var(--border-d);
 color: var(--title-d); font-size: 1.05rem; font-weight: 600; line-height: 1.4;
}
.aperture-answer {
 padding: 18px; display: flex; flex-direction: column; gap: 12px;
 background:
 radial-gradient(ellipse at 80% 20%, rgba(181, 139, 255, 0.08), transparent 40%),
 #0c1c24;
}
.answer-body {
 flex: 1; padding: 16px 18px; border-radius: 10px;
 background: var(--card-d); border: 1px solid var(--border-d);
 color: var(--body-d); font-size: 0.95rem; line-height: 1.6; min-height: 160px;
}
.answer-body strong { color: var(--title-d); }
.answer-body.is-ready { border-color: var(--aqua); }
.source-chip-row { display: flex; flex-wrap: wrap; gap: 8px; }
.source-chip {
 display: inline-flex; align-items: center; gap: 6px;
 padding: 5px 10px; border-radius: var(--r-pill);
 font-family: var(--mono); font-size: 0.68rem; font-weight: 600;
 background: rgba(57, 215, 197, 0.12); color: var(--aqua);
 border: 1px solid rgba(57, 215, 197, 0.35);
}
.source-chip--policy {
 background: rgba(109, 121, 255, 0.14); color: #a8b0ff;
 border-color: rgba(109, 121, 255, 0.4);
}
.source-chip--role {
 background: rgba(255, 91, 147, 0.14); color: var(--signal);
 border-color: rgba(255, 91, 147, 0.4);
}
.aperture-controls {
 display: flex; flex-wrap: wrap; gap: 8px; padding: 12px 16px;
 border-top: 1px solid var(--border-d); background: rgba(0, 0, 0, 0.28);
}

/* Sync windows — 3 role columns */
.sync-windows {
 display: grid; grid-template-columns: repeat(3, 1fr); gap: 0;
 border-top: 1px solid var(--border-d); min-height: 280px;
}
.sync-window {
 padding: 0; border-right: 1px solid var(--border-d);
 display: flex; flex-direction: column; background: var(--card-d);
 color: var(--title-d); transition: background 0.2s, box-shadow 0.2s;
}
.sync-window:last-child { border-right: none; }
.sync-window.is-active { box-shadow: inset 0 3px 0 var(--signal); }
.sync-window.is-highlight { background: rgba(255, 91, 147, 0.06); }
.sync-window-head {
 display: flex; justify-content: space-between; align-items: center;
 padding: 12px 14px; border-bottom: 1px solid var(--border-d);
}
.sync-window-role {
 font-family: var(--mono); font-size: 0.68rem; font-weight: 700;
 letter-spacing: 0.06em; text-transform: uppercase; padding: 4px 8px; border-radius: 4px;
}
.sync-window-role--admin { background: rgba(255, 91, 147, 0.2); color: var(--signal); }
.sync-window-role--member { background: rgba(57, 215, 197, 0.2); color: var(--aqua); }
.sync-window-role--trial { background: rgba(242, 184, 75, 0.2); color: var(--wait); }
.sync-window-body {
 flex: 1; padding: 14px; display: flex; flex-direction: column; gap: 10px;
 font-size: 0.86rem; color: var(--body-d);
}
.sync-window-body b { color: var(--title-d); display: block; margin-bottom: 4px; }
.sync-window-note {
 padding: 10px 14px; font-size: 0.76rem; color: var(--body-d);
 border-top: 1px solid var(--border-d); background: rgba(0, 0, 0, 0.22);
}

/* ========== Platform: compiler rail ========== */
.compiler-rail {
 display: grid; grid-template-columns: 1fr auto 1.1fr auto 1fr; gap: 0;
 align-items: stretch;
 border: 1.5px solid var(--border-d); border-radius: var(--r-lg);
 overflow: hidden; background: var(--black); color: var(--title-d);
 box-shadow: var(--shadow); min-height: 360px;
}
.compiler-col {
 padding: 18px 16px; background: var(--card-d);
 display: flex; flex-direction: column; gap: 10px;
}
.compiler-col h3 { font-size: 0.95rem; color: var(--title-d); }
.compiler-col p { font-size: 0.84rem; color: var(--body-d); }
.compiler-arrow {
 display: grid; place-items: center; width: 36px;
 background: rgba(0, 0, 0, 0.35); color: var(--signal);
 font-family: var(--mono); font-size: 1.1rem; font-weight: 700;
 border-left: 1px solid var(--border-d); border-right: 1px solid var(--border-d);
}
.compiler-item {
 padding: 10px 12px; border-radius: 8px;
 background: rgba(8, 19, 25, 0.45); border: 1px solid var(--border-d);
 font-size: 0.82rem; color: var(--body-d);
}
.compiler-item b { display: block; color: var(--aqua); margin-bottom: 2px; font-size: 0.78rem; }
.compiler-col--process {
 background:
 radial-gradient(ellipse at 50% 30%, rgba(255, 91, 147, 0.1), transparent 55%),
 var(--card-d);
}
.compiler-col.is-active { box-shadow: inset 0 3px 0 var(--aqua); }

/* ========== Question exchange ========== */
.exchange-board {
 display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
 min-height: 320px;
}
.exchange-port {
 padding: 16px; border-radius: var(--r);
 background: var(--card-d); border: 1.5px solid var(--border-d);
 color: var(--title-d); display: flex; flex-direction: column; gap: 8px;
 transition: border-color 0.2s, transform 0.2s;
}
.exchange-port:hover, .exchange-port.is-active {
 border-color: var(--signal); transform: translateY(-2px);
}
.exchange-port-label {
 font-family: var(--mono); font-size: 0.65rem; letter-spacing: 0.06em;
 text-transform: uppercase; color: var(--aqua); font-weight: 700;
}
.exchange-port h3 { font-size: 0.95rem; }
.exchange-port p { font-size: 0.84rem; color: var(--body-d); }
.exchange-port-plug {
 margin-top: auto; padding: 8px 10px; border-radius: 6px;
 font-family: var(--mono); font-size: 0.7rem;
 background: rgba(0, 0, 0, 0.28); border: 1px dashed var(--border-d); color: var(--wait);
}
.exchange-port.is-connected .exchange-port-plug {
 border-color: var(--ok); color: var(--ok); border-style: solid;
}

/* ========== Context engine: louver stack ========== */
.louver-stack {
 display: grid; gap: 6px; min-height: 400px;
}
.louver-shutter {
 border-radius: var(--r); overflow: hidden;
 border: 1.5px solid var(--border-d); background: var(--card-d);
 color: var(--title-d); transition: transform 0.25s, box-shadow 0.25s, border-color 0.2s;
 cursor: pointer;
}
.louver-shutter:hover, .louver-shutter.is-open {
 transform: translateX(6px);
 box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
 border-color: var(--aqua);
}
.louver-shutter.is-blocked { border-color: var(--risk); opacity: 0.75; }
.louver-tab {
 display: flex; align-items: center; justify-content: space-between; gap: 10px;
 padding: 12px 16px; background: rgba(0, 0, 0, 0.28);
 border-bottom: 1px solid var(--border-d);
}
.louver-tab b { font-size: 0.92rem; color: var(--title-d); }
.louver-tab span {
 font-family: var(--mono); font-size: 0.68rem; color: var(--aqua); letter-spacing: 0.04em;
}
.louver-body {
 padding: 14px 16px; font-size: 0.86rem; color: var(--body-d);
 display: none;
}
.louver-shutter.is-open .louver-body { display: block; }
.louver-body em { font-style: normal; color: var(--signal); font-weight: 600; }

/* ========== Answer studio: platen board ========== */
.platen-board {
 display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
}
.platen-block {
 padding: 18px 16px; border-radius: var(--r);
 background: var(--card-l); border: 1.5px solid var(--border-l);
 color: var(--title-l); min-height: 140px;
 transition: border-color 0.2s, transform 0.2s;
}
.platen-block:hover, .platen-block.is-active {
 border-color: var(--signal); transform: translateY(-2px);
}
.platen-block .mono-label { color: var(--signal); }
.platen-block h3 { font-size: 1rem; margin-bottom: 6px; color: var(--title-l); }
.platen-block p { font-size: 0.86rem; color: var(--body-l); }
.section--ink .platen-block, .section--black .platen-block {
 background: var(--card-d); border-color: var(--border-d); color: var(--title-d);
}
.section--ink .platen-block h3, .section--black .platen-block h3 { color: var(--title-d); }
.section--ink .platen-block p, .section--black .platen-block p { color: var(--body-d); }
.section--ink .platen-block .mono-label { color: #FF9BB8; }

/* ========== Policy: gate board ========== */
.gate-board {
 display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
 align-items: center; min-height: 340px;
}
.gate-node {
 position: relative; padding: 20px 18px; text-align: center;
 border-radius: 12px; background: var(--card-d); border: 2px solid var(--border-d);
 color: var(--title-d); clip-path: polygon(8% 0%, 92% 0%, 100% 50%, 92% 100%, 8% 100%, 0% 50%);
 transition: border-color 0.2s, background 0.2s;
}
.gate-node.is-pass { border-color: var(--ok); background: rgba(72, 201, 138, 0.12); }
.gate-node.is-block { border-color: var(--risk); background: rgba(240, 82, 104, 0.12); }
.gate-node.is-eval { border-color: var(--logic); background: rgba(109, 121, 255, 0.12); }
.gate-op {
 font-family: var(--mono); font-size: 0.72rem; font-weight: 700;
 letter-spacing: 0.08em; color: var(--aqua); margin-bottom: 6px;
}
.gate-node h3 { font-size: 1rem; margin-bottom: 6px; }
.gate-node p { font-size: 0.82rem; color: var(--body-d); }
.gate-wire {
 height: 2px; background: linear-gradient(90deg, var(--logic), var(--signal));
 opacity: 0.45; border-radius: 2px;
}

/* ========== Runtime: mux board ========== */
.mux-board {
 position: relative; min-height: 420px; padding: 28px;
 border-radius: var(--r-lg); border: 1.5px solid var(--border-d);
 background:
 radial-gradient(circle at 50% 50%, rgba(255, 91, 147, 0.1), transparent 45%),
 var(--black);
 overflow: hidden; color: var(--title-d);
}
.mux-center {
 position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
 width: min(200px, 36%); padding: 20px; text-align: center; z-index: 3;
 border-radius: 50%; aspect-ratio: 1;
 display: flex; flex-direction: column; align-items: center; justify-content: center;
 background: var(--card-d); border: 2px solid var(--signal);
 box-shadow: 0 0 40px rgba(255, 91, 147, 0.2);
}
.mux-center b { font-size: 0.95rem; color: var(--title-d); }
.mux-center span { font-family: var(--mono); font-size: 0.68rem; color: var(--aqua); margin-top: 4px; }
.mux-channels {
 display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; height: 100%;
 min-height: 360px; align-content: space-between;
}
.mux-channel {
 padding: 14px; border-radius: var(--r);
 background: var(--card-d); border: 1px solid var(--border-d);
 color: var(--body-d); font-size: 0.84rem; max-width: 200px;
}
.mux-channel:nth-child(2), .mux-channel:nth-child(5) { justify-self: center; }
.mux-channel:nth-child(3), .mux-channel:nth-child(6) { justify-self: end; }
.mux-channel.is-live { border-color: var(--aqua); color: var(--title-d); }
.mux-channel b { display: block; color: var(--signal); margin-bottom: 4px; font-size: 0.8rem; }

/* ========== Freshness: pulse ECG ========== */
.pulse-ecg {
 border: 1.5px solid var(--border-d); border-radius: var(--r-lg);
 background: var(--black); overflow: hidden; color: var(--title-d);
 padding: 16px 18px 20px;
}
.pulse-ecg-head {
 display: flex; justify-content: space-between; align-items: center; gap: 10px;
 margin-bottom: 12px; font-family: var(--mono); font-size: 0.75rem;
}
.pulse-ecg-head b { color: var(--aqua); }
.pulse-ecg-svg { width: 100%; height: 120px; }
.pulse-line {
 fill: none; stroke: var(--signal); stroke-width: 2.5;
 stroke-linecap: round; stroke-linejoin: round;
}
.pulse-line--stale { stroke: var(--wait); stroke-dasharray: 6 4; }
.pulse-line--risk { stroke: var(--risk); }
.pulse-legend {
 display: flex; flex-wrap: wrap; gap: 14px; margin-top: 12px;
 font-family: var(--mono); font-size: 0.72rem; color: var(--body-d);
}
.pulse-legend i {
 display: inline-block; width: 18px; height: 3px; border-radius: 2px; margin-right: 6px;
 vertical-align: middle;
}
.pulse-legend .leg-fresh { background: var(--signal); }
.pulse-legend .leg-stale { background: var(--wait); }
.pulse-legend .leg-risk { background: var(--risk); }

/* ========== Ledger rail ========== */
.ledger-rail {
 display: grid; gap: 0; border-left: 2px solid var(--border-d);
 margin-left: 12px; padding-left: 0;
}
.ledger-entry {
 position: relative; padding: 14px 16px 14px 28px;
 border-bottom: 1px solid var(--border-d); color: var(--body-d);
}
.ledger-entry::before {
 content: ""; position: absolute; left: -7px; top: 20px;
 width: 12px; height: 12px; border-radius: 50%;
 background: var(--card-d); border: 2px solid var(--aqua);
}
.ledger-entry.is-alert::before { border-color: var(--risk); background: var(--risk); }
.ledger-entry.is-ok::before { border-color: var(--ok); background: var(--ok); }
.ledger-time {
 font-family: var(--mono); font-size: 0.68rem; color: var(--aqua); margin-bottom: 4px;
}
.ledger-entry b { display: block; color: var(--title-d); margin-bottom: 4px; }
.ledger-entry p { font-size: 0.86rem; margin: 0; }
.section--petal .ledger-rail { border-left-color: var(--border-l); }
.section--petal .ledger-entry { border-bottom-color: var(--border-l); color: var(--body-l); }
.section--petal .ledger-entry b { color: var(--title-l); }
.section--petal .ledger-entry::before { background: var(--card-l); }

/* ========== Developers: scope board ========== */
.scope-board {
 display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 0;
 border: 1.5px solid var(--border-d); border-radius: var(--r-lg);
 overflow: hidden; min-height: 420px; box-shadow: var(--shadow);
}
.scope-trace {
 padding: 0; background: #0a141a; color: var(--aqua);
 border-right: 1px solid var(--border-d); display: flex; flex-direction: column;
}
.scope-trace-head {
 display: flex; justify-content: space-between; align-items: center;
 padding: 10px 14px; background: rgba(0, 0, 0, 0.4); border-bottom: 1px solid var(--border-d);
 font-family: var(--mono); font-size: 0.72rem; color: var(--body-d);
}
.scope-wave {
 flex: 1; padding: 16px; min-height: 200px;
 background:
 linear-gradient(90deg, rgba(45, 83, 96, 0.4) 1px, transparent 1px) 0 0 / 24px 24px,
 linear-gradient(rgba(45, 83, 96, 0.4) 1px, transparent 1px) 0 0 / 24px 24px,
 #0a141a;
}
.scope-wave svg { width: 100%; height: 160px; }
.scope-wave path {
 fill: none; stroke: var(--signal); stroke-width: 2;
}
.scope-code {
 margin: 0; padding: 14px 16px; font-family: var(--mono); font-size: 0.78rem;
 line-height: 1.55; color: var(--aqua); white-space: pre-wrap;
 border-top: 1px solid var(--border-d); background: rgba(0, 0, 0, 0.3);
}
.scope-panel {
 padding: 18px; background: var(--petal); color: var(--title-l);
 display: flex; flex-direction: column; gap: 12px;
}
.scope-panel h3 { color: var(--title-l); }
.scope-panel p { font-size: 0.88rem; color: var(--body-l); }
.sdk-integrations {
 display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px;
}
.sdk-integrations li {
 padding: 6px 10px; border-radius: 6px; font-size: 0.78rem; font-weight: 600;
 background: var(--card-l); border: 1px solid var(--border-l); color: var(--title-l);
}

/* ========== Pricing: coverage arc ========== */
.coverage-arc {
 display: grid; grid-template-columns: 1.2fr 0.9fr; gap: 28px; align-items: center;
}
.coverage-dial {
 position: relative; width: min(420px, 100%); margin: 0 auto;
 aspect-ratio: 2 / 1.15; display: flex; flex-direction: column; align-items: center;
}
.coverage-arc-svg {
 width: 100%; height: auto; overflow: visible;
}
.coverage-arc-track {
 fill: none; stroke: var(--border-l); stroke-width: 18; stroke-linecap: round;
}
.coverage-arc-fill {
 fill: none; stroke: var(--signal); stroke-width: 18; stroke-linecap: round;
 transition: stroke-dashoffset 0.4s ease;
}
.coverage-arc-glow {
 fill: none; stroke: var(--aqua); stroke-width: 4; stroke-linecap: round; opacity: 0.7;
}
.coverage-readout {
 margin-top: -48px; text-align: center; z-index: 2;
}
.coverage-readout .price {
 font-size: 2.4rem; font-weight: 800; color: var(--title-l); line-height: 1;
}
.coverage-readout .price span {
 font-size: 0.9rem; font-weight: 600; color: var(--body-l);
}
.coverage-readout .mono-label { color: var(--signal); margin-bottom: 4px; }
.coverage-ticks {
 display: flex; justify-content: space-between; width: 100%;
 margin-top: 8px; font-family: var(--mono); font-size: 0.68rem; color: var(--body-l);
}
.plan-recommended {
 padding: 24px; border-radius: var(--r-lg);
 background: var(--ink); border: 2px solid var(--signal);
 color: var(--title-d); box-shadow: var(--shadow);
}
.plan-recommended .mono-label { color: var(--signal); }
.plan-recommended h3 { font-size: 1.5rem; margin: 6px 0 8px; color: var(--title-d); }
.plan-recommended .price {
 font-size: 2.2rem; font-weight: 800; margin: 8px 0 14px; color: var(--signal);
}
.plan-recommended .price span { font-size: 0.9rem; font-weight: 600; color: var(--body-d); }
.plan-recommended ul { display: grid; gap: 8px; margin: 0 0 16px; }
.plan-recommended li {
 font-size: 0.92rem; color: var(--body-d); padding-left: 14px; position: relative;
}
.plan-recommended li::before {
 content: ""; position: absolute; left: 0; top: 0.55em;
 width: 6px; height: 6px; border-radius: 50%; background: var(--aqua);
}
.plan-tier-ghost {
 margin-top: 14px; padding-top: 12px; border-top: 1px dashed var(--border-d);
 color: var(--body-d); font-size: 0.88rem; opacity: 0.7;
}
.plan-tier-ghost.is-selected { opacity: 1; color: var(--title-d); }
.chapter-compare { margin-top: 28px; overflow: auto; }
.chapter-compare table {
 width: 100%; border-collapse: collapse; background: var(--card-l); color: var(--title-l);
}
.chapter-compare th, .chapter-compare td {
 padding: 12px 14px; border: 1px solid var(--border-l); text-align: left; font-size: 0.9rem;
}
.chapter-compare th { background: var(--ink); color: var(--title-d); }

/* ========== About / contact / shared ========== */
.about-system {
 font-size: clamp(1.55rem, 3vw, 2.15rem); font-weight: 800;
 margin-bottom: 12px; max-width: 22ch; line-height: 1.2;
}
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.about-etymology {
 display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 18px 0 28px;
}
.about-etymology article {
 padding: 18px; border-radius: var(--r);
 background: var(--card-l); border: 1px solid var(--border-l); color: var(--title-l);
}
.about-etymology h3 { margin: 0 0 8px; color: var(--signal); }
.about-layout { display: grid; gap: 28px; }
.value-rail { display: grid; gap: 10px; counter-reset: vr; }
.value-rail li {
 counter-increment: vr; position: relative; padding: 14px 16px 14px 52px;
 border-radius: var(--r); background: var(--card-l); border: 1px solid var(--border-l);
 color: var(--title-l);
}
.section--ink .value-rail li, .section--black .value-rail li {
 background: var(--card-d); border-color: var(--border-d); color: var(--body-d);
}
.value-rail li::before {
 content: counter(vr, decimal-leading-zero);
 position: absolute; left: 14px; top: 14px;
 font-family: var(--mono); font-size: 0.72rem; font-weight: 700; color: var(--signal);
}
.section--ink .value-rail li::before, .section--black .value-rail li::before { color: var(--aqua); }
.value-rail b { display: block; margin-bottom: 4px; color: var(--title-l); }
.section--ink .value-rail b, .section--black .value-rail b { color: var(--aqua); }
.audience-row { display: flex; flex-wrap: wrap; gap: 10px; }
.audience-row li {
 padding: 10px 14px; border-radius: 8px; font-weight: 700; font-size: 0.85rem;
 background: var(--card-l); border: 1px solid var(--border-l); color: var(--title-l);
}
.about-list, .status-list { display: grid; gap: 10px; }
.about-list li, .status-list li {
 padding: 12px 14px; border-radius: 8px;
 background: var(--card-l); border: 1px solid var(--border-l);
 font-weight: 600; color: var(--title-l);
}
.section--ink .about-list li, .section--black .about-list li,
.section--ink .status-list li, .section--black .status-list li,
.section--ink .hub-card, .section--black .hub-card {
 background: var(--card-d); border-color: var(--border-d); color: var(--title-d);
}
.status-list li { display: flex; align-items: center; gap: 10px; }
.status-list .ok {
 width: 10px; height: 10px; border-radius: 50%; background: var(--ok); display: inline-block;
}

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: start; }
.contact-form {
 background: var(--card-l); border: 1px solid var(--border-l);
 border-radius: var(--r-lg); padding: 22px; color: var(--title-l);
}
.contact-form label { color: var(--title-l); }
.section--ink .contact-form .hint-line { color: var(--aqua); }
.changelog article { padding: 18px 0; border-bottom: 1px solid var(--border-l); }
.changelog time { font-family: var(--mono); font-size: 0.75rem; color: var(--signal); }
.legal-prose { max-width: 65ch; color: var(--title-l); }
.legal-prose h2 { margin: 24px 0 10px; font-size: 1.2rem; }
.legal-prose p { margin-bottom: 12px; color: var(--body-l); }
.cookie-panel { margin-top: 20px; display: grid; gap: 12px; max-width: 360px; }
.cookie-row {
 display: flex; justify-content: space-between; align-items: center;
 flex-direction: row; padding: 12px; border: 1px solid var(--border-l); border-radius: 8px;
 background: var(--card-l); color: var(--title-l);
}
.cookie-row input { width: auto; }
.hub-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.hub-card {
 text-align: left; padding: 14px; border-radius: 8px;
 background: var(--card-l); border: 1px solid var(--border-l);
 font-weight: 700; color: var(--title-l); text-decoration: none;
}
.hub-card:hover { border-color: var(--signal); text-decoration: none; }
.hub-card small { display: block; font-size: 0.75rem; color: var(--body-l); font-weight: 500; margin-top: 4px; }

.conn-list { display: grid; gap: 8px; }
.conn-row {
 display: grid; grid-template-columns: 1fr auto auto; gap: 12px; align-items: center;
 padding: 14px 16px; border-radius: var(--r);
 background: var(--card-l); border: 1px solid var(--border-l); color: var(--title-l);
}
.conn-row.is-connected { border-color: rgba(72, 201, 138, 0.55); }
.conn-main b { display: block; color: var(--title-l); }
.conn-main span { font-family: var(--mono); font-size: 0.72rem; color: var(--signal); }
.conn-main p { margin: 4px 0 0; font-size: 0.85rem; color: var(--body-l); }
.conn-meta { display: grid; gap: 4px; justify-items: end; }
.conn-meta em { font-style: normal; font-size: 0.72rem; color: var(--body-l); }

.docs-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.doc-card {
 padding: 18px; border-radius: var(--r);
 background: var(--card-d); border: 1px solid var(--border-d); color: var(--title-d);
}
.section--petal .doc-card {
 background: var(--card-l); border-color: var(--border-l); color: var(--title-l);
}
.doc-card h3 { margin: 8px 0 10px; }
.doc-list { display: grid; gap: 8px; font-size: 0.88rem; color: var(--body-d); }
.section--petal .doc-list { color: var(--body-l); }
.doc-card code { font-family: var(--mono); font-size: 0.78rem; color: var(--aqua); }
.section--petal .doc-card code { color: var(--logic); }

.instrument-nav {
 display: flex; flex-wrap: wrap; gap: 8px 18px;
 font-family: var(--mono); font-size: 0.82rem;
}
.instrument-nav a {
 color: var(--title-l); text-decoration: none; font-weight: 600;
 border-bottom: 1px solid var(--border-l); padding-bottom: 2px;
}
.instrument-nav a:hover { color: var(--signal); border-color: var(--signal); }

.chip {
 padding: 6px 12px; border-radius: var(--r-pill); font-size: 0.78rem; font-weight: 700;
 border: 1px solid var(--border-d); color: var(--body-d); background: var(--card-d);
}
.section--petal .chip { border-color: var(--border-l); color: var(--body-l); background: var(--card-l); }
.chip.is-active { border-color: var(--signal); color: var(--signal); background: rgba(255, 91, 147, 0.12); }

/* ========== Auth (high contrast — light card on dark) ========== */
.auth-body {
 min-height: 100dvh; margin: 0; font-family: var(--sans);
 background:
 radial-gradient(ellipse 50% 40% at 20% 10%, rgba(255, 91, 147, 0.14), transparent),
 radial-gradient(ellipse 40% 35% at 90% 80%, rgba(57, 215, 197, 0.12), transparent),
 var(--ink);
 color: var(--title-d);
}
.auth-shell {
 width: min(440px, calc(100% - 40px)); margin: 0 auto;
 padding: 48px 0 40px; display: flex; flex-direction: column; gap: 20px;
}
.auth-brand {
 display: flex; align-items: center; gap: 10px; color: #fff; text-decoration: none;
 font-size: 1.35rem; font-weight: 800;
}
.auth-brand:hover { text-decoration: none; color: #fff; }
.auth-card {
 background: rgba(23, 53, 65, 0.55); border: 1px solid var(--border-d);
 border-radius: var(--r-lg); padding: 28px;
}
.auth-card h1 { font-size: 1.65rem; font-weight: 800; margin: 8px 0 10px; color: #fff; }
.auth-card .lead { color: var(--body-d); margin-bottom: 18px; }
.auth-form {
 background: var(--card-l); border: 1px solid rgba(255, 255, 255, 0.12);
 border-radius: var(--r-lg); padding: 22px;
}
.auth-form label { color: var(--title-l); font-weight: 700; }
.auth-form input {
 background: #fff; border: 1.5px solid var(--border-l); color: var(--title-l); font-size: 1rem;
}
.auth-form input:focus {
 outline: 2px solid var(--signal); outline-offset: 1px; border-color: var(--signal);
}
.auth-alt { margin-top: 16px; font-size: 0.95rem; color: var(--body-d); }
.auth-alt a { color: var(--signal); font-weight: 600; }
.auth-foot { font-size: 0.82rem; color: rgba(195, 215, 220, 0.45); text-align: center; }
.auth-card--light {
 background: var(--card-l); border: 1.5px solid var(--border-l); color: var(--title-l);
}
.auth-card--light h1, .auth-card--light .kicker { color: var(--title-l) !important; }
.auth-card--light .lead { color: var(--body-l) !important; }
.auth-card--light .auth-alt { color: var(--body-l); }
.auth-card--light .auth-alt a, .auth-card--light .linkish { color: var(--logic); }
.auth-msg {
 margin-top: 10px; padding: 10px 12px; border-radius: 8px;
 background: rgba(72, 201, 138, 0.14); border: 1px solid var(--ok);
 color: var(--ok); font-size: 0.88rem; font-weight: 600;
}

/* High-contrast safety: light surfaces keep dark text */
.section--ink .platen-block,
.section--black .platen-block,
.section--ink .contact-form,
.section--black .contact-form,
.section--ink .capacity-board,
.auth-form {
 color: var(--title-l);
}
.section--ink .platen-block p,
.section--black .platen-block p { color: var(--body-l); }
.section--ink .platen-block,
.section--black .platen-block {
 background: var(--card-l); border-color: var(--border-l);
}
.section--ink .platen-block h3,
.section--black .platen-block h3 { color: var(--title-l); }
.section--ink .platen-block .mono-label,
.section--black .platen-block .mono-label { color: #c43a6e; }

/* Motion */
@keyframes aperturePulse {
 0%, 100% { box-shadow: 0 0 0 0 rgba(255, 91, 147, 0.35); }
 50% { box-shadow: 0 0 0 8px rgba(255, 91, 147, 0); }
}
.mux-center.is-live { animation: aperturePulse 2.2s ease-in-out infinite; }
@keyframes louverSlide {
 from { opacity: 0; transform: translateX(-8px); }
 to { opacity: 1; transform: translateX(0); }
}
.louver-shutter.is-open .louver-body { animation: louverSlide 0.25s ease; }
@keyframes pulseDraw {
 from { stroke-dashoffset: 400; }
 to { stroke-dashoffset: 0; }
}
.pulse-line.is-animating { stroke-dasharray: 400; animation: pulseDraw 1.6s ease forwards; }

/* ========== Responsive ========== */
@media (max-width: 1100px) {
 .nav-main { display: none; }
 .nav-toggle { display: inline-flex; }
 .compiler-rail {
 grid-template-columns: 1fr;
 }
 .compiler-arrow {
 width: 100%; height: 32px; border: none;
 border-top: 1px solid var(--border-d); border-bottom: 1px solid var(--border-d);
 }
 .mux-channels { grid-template-columns: 1fr 1fr; }
 .mux-center { position: relative; left: auto; top: auto; transform: none; margin: 0 auto 18px; width: 140px; }
 .mux-channel, .mux-channel:nth-child(2), .mux-channel:nth-child(3),
 .mux-channel:nth-child(5), .mux-channel:nth-child(6) { justify-self: stretch; max-width: none; }
}

@media (max-width: 900px) {
 .aperture-body { grid-template-columns: 1fr; }
 .aperture-ask { border-right: none; border-bottom: 1px solid var(--border-d); }
 .sync-windows { grid-template-columns: 1fr; }
 .sync-window { border-right: none; border-bottom: 1px solid var(--border-d); }
 .exchange-board { grid-template-columns: 1fr 1fr; }
 .platen-board { grid-template-columns: 1fr 1fr; }
 .gate-board { grid-template-columns: 1fr; }
 .coverage-arc { grid-template-columns: 1fr; }
 .scope-board { grid-template-columns: 1fr; }
 .scope-trace { border-right: none; border-bottom: 1px solid var(--border-d); }
 .about-grid, .contact-grid { grid-template-columns: 1fr; }
 .about-etymology { grid-template-columns: 1fr; }
 .footer-grid { grid-template-columns: 1fr 1fr; }
 .docs-grid, .hub-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
 :root { --content: min(1180px, calc(100% - 28px)); }
 .brand-text span { display: none; }
 .header-actions .btn-ghost { display: none; }
 .announce-text { font-size: 0.78rem; }
 .exchange-board, .platen-board { grid-template-columns: 1fr; }
 .mux-channels { grid-template-columns: 1fr; }
 .footer-grid { grid-template-columns: 1fr; }
 .docs-grid, .hub-grid { grid-template-columns: 1fr; }
 .conn-row { grid-template-columns: 1fr; }
 .conn-meta { justify-items: start; }
 .aperture-controls .btn, .page-hero-actions .btn { width: 100%; }
 .home-hero-head h1 { max-width: none; }
}

/* ========== Markup sync: pages.py classes ========== */
.home-hero-head { text-align: center; margin-bottom: 28px; }
.home-hero-head .lead { margin: 0 auto 12px; max-width: 62ch; }
.home-hero-head .page-hero-actions { justify-content: center; }
.home-hero-head .home-keywords { justify-content: center; }
.home-brand {
 font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 800; margin: 0 0 6px;
 color: var(--title-d); letter-spacing: -0.03em;
}
.aperture-iris {
 display: flex; justify-content: center; gap: 6px; margin-bottom: 14px;
}
.aperture-iris i {
 width: 10px; height: 10px; border-radius: 50%;
 border: 2px solid var(--signal); opacity: 0.55;
}
.aperture-iris i:nth-child(2) { opacity: 0.8; transform: scale(1.15); }
.aperture-iris i:nth-child(3) { opacity: 1; transform: scale(1.3); border-color: var(--aqua); }

.context-toggle.is-on {
 border-color: var(--aqua); color: var(--aqua); background: rgba(57, 215, 197, 0.12);
}
.sync-windows {
 display: grid; grid-template-columns: repeat(3, 1fr); gap: 0;
 border: 1.5px solid var(--border-d); border-radius: var(--r-lg); overflow: hidden;
 background: var(--card-d); margin-top: 12px;
}
.sync-window {
 padding: 0; border-right: 1px solid var(--border-d); color: var(--body-d);
 text-align: left; background: transparent; cursor: pointer;
 transition: background 0.2s, box-shadow 0.2s;
}
.sync-window:last-child { border-right: none; }
.sync-window.is-active { box-shadow: inset 0 3px 0 var(--signal); background: rgba(255, 91, 147, 0.06); }
.sync-window.is-generic .answer-body { opacity: 0.55; filter: grayscale(0.3); }
.sync-window-bar {
 display: flex; justify-content: space-between; align-items: center; gap: 8px;
 padding: 12px 14px; background: rgba(0, 0, 0, 0.28); border-bottom: 1px solid var(--border-d);
}
.sync-role { font-weight: 800; color: var(--title-d); font-size: 0.95rem; }
.sync-question { padding: 12px 14px 8px; }
.sync-question p { color: var(--title-d); font-weight: 600; margin: 4px 0 0; }
.answer-body { padding: 8px 14px 12px; font-size: 0.9rem; line-height: 1.55; color: var(--body-d); }
.answer-body b { color: var(--aqua); }
.source-chip-row { display: flex; flex-wrap: wrap; gap: 6px; padding: 0 14px 14px; }
.source-chip {
 display: flex; flex-direction: column; gap: 2px; text-align: left;
 padding: 8px 10px; border-radius: 8px; font-size: 0.72rem;
 background: rgba(0, 0, 0, 0.25); border: 1px solid var(--border-d); color: var(--body-d);
 max-width: 100%;
}
.source-chip b { color: var(--signal); font-size: 0.65rem; letter-spacing: 0.04em; text-transform: uppercase; }
.source-chip span { display: none; color: var(--title-d); }
.source-chip.is-open span { display: block; margin-top: 4px; }

.home-layers {
 display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 8px;
}
.home-layers article {
 padding: 18px 16px; border-radius: var(--r);
 background: var(--card-l); border: 1px solid var(--border-l); color: var(--body-l);
}
.home-layers em {
 display: block; font-family: var(--mono); font-style: normal; font-size: 0.68rem;
 color: var(--signal); margin-bottom: 6px;
}
.home-layers b { display: block; color: var(--title-l); margin-bottom: 6px; }
.home-path {
 display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 8px;
}
.home-path a {
 display: block; padding: 18px 16px; border-radius: var(--r); text-decoration: none;
 background: var(--card-d); border: 1px solid var(--border-d); color: var(--body-d);
 transition: border-color 0.15s, transform 0.15s;
}
.home-path a:hover { border-color: var(--signal); transform: translateY(-2px); text-decoration: none; color: var(--body-d); }
.home-path em { display: block; font-family: var(--mono); font-style: normal; font-size: 0.68rem; color: var(--aqua); margin-bottom: 6px; }
.home-path b { display: block; color: var(--title-d); margin-bottom: 6px; font-size: 1.05rem; }
.home-audience {
 display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 8px;
}
.home-audience li {
 padding: 14px 16px; border-radius: 8px;
 background: var(--card-l); border: 1px solid var(--border-l); color: var(--body-l);
}
.home-audience b { color: var(--title-l); }

.tag--wait { background: rgba(242, 184, 75, 0.2); color: var(--wait); }
.tag--connected, .tag--CONNECTED { background: rgba(72, 201, 138, 0.18); color: var(--ok); }
.tag--available, .tag--AVAILABLE { background: rgba(109, 121, 255, 0.16); color: #a8b0ff; }

.compiler-rail {
 display: grid; grid-template-columns: 1fr 0.7fr 1fr; gap: 14px; align-items: start;
}
.compiler-col {
 padding: 16px; border-radius: var(--r-lg);
 background: var(--card-d); border: 1.5px solid var(--border-d);
}
.compiler-chip {
 display: block; width: 100%; text-align: left; margin-bottom: 8px;
 padding: 12px; border-radius: 8px;
 background: rgba(0, 0, 0, 0.22); border: 1px solid var(--border-d); color: var(--body-d);
}
.compiler-chip b { display: block; color: var(--aqua); margin-bottom: 2px; }
.compiler-chip.is-on { border-color: var(--signal); background: rgba(255, 91, 147, 0.08); }
.compiler-mid .process-steps {
 display: grid; gap: 8px;
}
.process-steps span {
 padding: 10px 12px; border-radius: 8px; font-weight: 700;
 background: rgba(0, 0, 0, 0.22); border: 1px solid var(--border-d); color: var(--body-d);
 opacity: 0.45;
}
.process-steps span.is-lit { opacity: 1; border-color: var(--aqua); color: var(--aqua); }
.compiler-out {
 padding: 14px; border-radius: 8px; background: rgba(0, 0, 0, 0.22); border: 1px solid var(--border-d);
}
.compiler-out b { display: block; color: var(--signal); margin-bottom: 8px; }
.compiler-rail.is-degraded .compiler-out { border-color: var(--wait); }

.exchange-board {
 display: grid; grid-template-columns: 1fr 1.2fr 0.8fr; gap: 14px;
}
.exchange-ports { display: grid; gap: 8px; }
.exchange-port {
 padding: 12px 14px; border-radius: 8px; text-align: left; font-weight: 700;
 background: var(--card-l); border: 1.5px solid var(--border-l); color: var(--title-l);
}
.exchange-port.is-active { border-color: var(--signal); color: var(--signal); }
.exchange-core, .exchange-unrouted {
 padding: 18px; border-radius: var(--r-lg);
 background: var(--card-l); border: 1.5px solid var(--border-l); color: var(--body-l);
}
.exchange-core h3 { color: var(--title-l); margin: 6px 0; }
.exchange-meta { display: grid; gap: 6px; margin-top: 12px; }
.exchange-meta b { color: var(--signal); }

.louver-stage {
 display: grid; grid-template-columns: 1fr 1.1fr; gap: 18px; align-items: start;
}
.louver-stack { display: grid; gap: 8px; }
.louver {
 display: flex; justify-content: space-between; align-items: center; gap: 12px;
 padding: 14px 16px; border-radius: 8px; text-align: left;
 background: var(--card-d); border: 1.5px solid var(--border-d); color: var(--body-d);
 opacity: 0.45; transition: opacity 0.2s, border-color 0.2s, background 0.2s;
}
.louver.is-open { opacity: 1; border-color: var(--aqua); background: rgba(57, 215, 197, 0.08); }
.louver.is-required { box-shadow: inset 3px 0 0 var(--signal); }
.louver-label { font-weight: 800; color: var(--title-d); }
.louver-val { font-style: normal; font-family: var(--mono); font-size: 0.78rem; color: var(--aqua); }
.louver-preview {
 padding: 20px; border-radius: var(--r-lg);
 background: var(--card-d); border: 1.5px solid var(--border-d); color: var(--body-d);
}
.louver-preview h3 { color: var(--title-d); margin: 8px 0; }

.platen-block.is-locked { border-color: var(--ok); }
.platen-block.is-missing { border-color: var(--risk); border-style: dashed; }
.platen-block em { display: block; margin-top: 8px; font-size: 0.72rem; color: var(--wait); font-style: normal; }
.platen-block.is-locked em { color: var(--ok); }

.gate {
 padding: 16px; border-radius: var(--r); text-align: left;
 background: var(--card-d); border: 1.5px solid var(--border-d); color: var(--body-d);
}
.gate.is-active { outline: 2px solid var(--signal); }
.gate--ok { border-color: var(--ok); }
.gate--wait { border-color: var(--wait); }
.gate--ai { border-color: var(--ai); }
.gate--risk { border-color: var(--risk); }
.gate-detail {
 margin-top: 14px; padding: 16px; border-radius: var(--r);
 background: var(--card-d); border: 1px solid var(--border-d); color: var(--body-d);
}
.gate-detail h3 { color: var(--title-d); margin-bottom: 6px; }

.mux-board { position: relative; padding: 28px; min-height: 320px; }
.mux-core {
 width: 160px; margin: 0 auto 20px; padding: 18px; text-align: center;
 border-radius: 50%; background: var(--card-l); border: 2px solid var(--signal);
 color: var(--body-l); box-shadow: var(--shadow);
}
.mux-core h3 { color: var(--title-l); margin: 4px 0; font-size: 0.95rem; }
.mux-channels {
 display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px;
}
.mux-channel span { font-size: 0.72rem; color: var(--body-l); }

.pulse-ecg {
 position: relative; padding: 18px; border-radius: var(--r-lg);
 background: var(--card-d); border: 1.5px solid var(--border-d); color: var(--signal);
}
.ecg-line { width: 100%; height: auto; color: var(--signal); }
.pulse-marks { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.pulse-mark {
 padding: 8px 10px; border-radius: 8px; text-align: left;
 background: rgba(0, 0, 0, 0.25); border: 1px solid var(--border-d); color: var(--body-d);
}
.pulse-mark b { display: block; color: var(--aqua); font-size: 0.78rem; }
.pulse-mark.is-active { border-color: var(--signal); }
.pulse-detail { margin-top: 12px; color: var(--body-d); }
.pulse-ecg.is-scanned .ecg-line { color: var(--aqua); }

.ledger-row {
 display: grid; grid-template-columns: 1fr auto auto; gap: 12px; align-items: center;
 width: 100%; text-align: left; padding: 14px 16px;
 border-bottom: 1px solid var(--border-l); background: var(--card-l); color: var(--body-l);
}
.ledger-row.is-active { background: rgba(255, 91, 147, 0.08); box-shadow: inset 3px 0 0 var(--signal); }
.ledger-detail {
 margin-top: 14px; padding: 16px; border-radius: var(--r);
 background: var(--card-l); border: 1px solid var(--border-l); color: var(--body-l);
}
.ledger-detail h3 { color: var(--title-l); }

.scope-board {
 display: grid; grid-template-columns: 1.1fr 0.6fr 1fr; gap: 12px; align-items: stretch;
}
.scope-in, .scope-out {
 padding: 16px; border-radius: var(--r-lg);
 background: var(--card-d); border: 1.5px solid var(--border-d); color: var(--body-d);
}
.scope-sig {
 display: inline-flex; margin: 0 6px 6px 0; padding: 6px 10px; border-radius: var(--r-pill);
 border: 1px solid var(--border-d); color: var(--body-d); font-size: 0.75rem; font-weight: 700;
}
.scope-sig.is-on { border-color: var(--aqua); color: var(--aqua); }
.scope-sig.is-paused { opacity: 0.4; text-decoration: line-through; }
.scope-wave { display: grid; place-items: center; color: var(--signal); }
.code-pane {
 margin-top: 12px; padding: 12px; border-radius: 8px; overflow: auto;
 font-family: var(--mono); font-size: 0.72rem; line-height: 1.5;
 background: rgba(0, 0, 0, 0.35); color: var(--aqua); white-space: pre-wrap;
}
.partner-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 16px; }
.partner-chip {
 padding: 6px 10px; border-radius: 6px; font-size: 0.78rem; font-weight: 600;
 background: var(--card-d); border: 1px solid var(--border-d); color: var(--title-d);
}

.price-layout {
 display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 24px; align-items: start;
}
.coverage-arc {
 padding: 20px; border-radius: var(--r-lg);
 background: var(--card-l); border: 1.5px solid var(--border-l); color: var(--title-l);
}
.arc-svg { width: 100%; max-width: 360px; margin: 8px auto; display: block; color: var(--signal); }
.arc-fill { color: var(--signal); }
.plan-tag { color: var(--aqua); font-weight: 600; font-size: 0.9rem; }
.chapter-compare { margin-top: 24px; overflow: auto; }
.chapter-compare table { width: 100%; border-collapse: collapse; background: var(--card-l); color: var(--title-l); }
.chapter-compare th, .chapter-compare td {
 padding: 12px 14px; border: 1px solid var(--border-l); text-align: left; font-size: 0.9rem;
}
.chapter-compare th { background: var(--black); color: var(--title-d); }

.cta-band { text-align: center; max-width: 640px; margin: 0 auto; }
.cta-band h2 { color: var(--title-d); }
.not-cols {
 display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 14px 0 24px;
}
.not-cols > div {
 padding: 14px 16px; border-radius: var(--r);
 background: var(--card-l); border: 1px solid var(--border-l); color: var(--body-l);
}
.not-cols b { display: block; color: var(--signal); margin-bottom: 6px; }
.about-etymology {
 display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
}
.about-etymology article {
 padding: 16px; border-radius: var(--r);
 background: var(--card-l); border: 1px solid var(--border-l); color: var(--body-l);
}
.about-etymology h3 { color: var(--signal); margin-bottom: 8px; }
.about-system {
 font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 800; color: var(--title-l); margin: 0 0 8px;
}
.mt-s { margin-top: 8px; }
.mt-m { margin-top: 16px; }
.conn-list { display: grid; gap: 8px; }
.conn-row {
 display: grid; grid-template-columns: 1fr auto auto; gap: 12px; align-items: center;
 padding: 14px 16px; border-radius: 8px;
 background: var(--card-l); border: 1px solid var(--border-l); color: var(--body-l);
}
.conn-row.is-connected { border-color: var(--ok); }
.conn-main b { display: block; color: var(--title-l); }
.conn-main span { font-family: var(--mono); font-size: 0.68rem; color: var(--signal); }
.status-list { display: grid; gap: 10px; color: var(--body-d); }
.status-list .ok, .status-list .warn {
 width: 10px; height: 10px; border-radius: 50%; display: inline-block;
}
.status-list .ok { background: var(--ok); }
.status-list .warn { background: var(--wait); }
.changelog article {
 padding: 16px 0; border-bottom: 1px solid var(--border-l); color: var(--body-l);
}
.changelog time { font-family: var(--mono); font-size: 0.75rem; color: var(--signal); }
.changelog h3 { color: var(--title-l); margin: 4px 0 6px; }
.about-list { display: grid; gap: 10px; color: var(--body-d); }
.section--petal .about-list { color: var(--body-l); }
.about-list a { color: var(--logic); font-weight: 600; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.contact-form {
 padding: 20px; border-radius: var(--r-lg);
 background: var(--card-l); border: 1.5px solid var(--border-l); color: var(--title-l);
}
.section--ink .contact-form {
 background: var(--card-d); border-color: var(--border-d); color: var(--title-d);
}
.section--ink .contact-form label { color: var(--title-d); }
.file-field-ui { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.file-field-name { font-size: 0.82rem; color: var(--body-l); }
.linkish {
 background: none; border: none; color: var(--logic); font-weight: 600;
 cursor: pointer; text-decoration: underline;
}
.cookie-panel { margin-top: 16px; display: grid; gap: 10px; }
.cookie-row {
 display: flex; justify-content: space-between; align-items: center;
 padding: 12px; border-radius: 8px; background: var(--card-l); border: 1px solid var(--border-l);
}

@media (max-width: 900px) {
 .home-layers, .home-path { grid-template-columns: 1fr 1fr; }
 .louver-stage, .price-layout, .exchange-board, .scope-board, .compiler-rail, .contact-grid { grid-template-columns: 1fr; }
 .home-audience, .not-cols, .about-etymology { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
 .home-layers, .home-path, .sync-windows { grid-template-columns: 1fr; }
}

/* Gap-fill styles */
.compiler-out { margin-bottom: 8px; cursor: pointer; opacity: 0.72; }
.compiler-out.is-active { opacity: 1; border-color: var(--signal); }
.exchange-channel-rules {
 margin-top: 14px; padding: 14px 16px; border-radius: var(--r);
 background: var(--card-l); border: 1px solid var(--border-l); color: var(--body-l);
}
.exchange-channel-rules ul { display: grid; gap: 6px; margin-top: 8px; }
.exchange-channel-rules b { color: var(--signal); }
.gate-examples { margin-top: 12px; display: grid; gap: 6px; }
.gate-examples b { color: var(--aqua); }
.mux-channel.is-suspended {
 border-color: var(--risk); color: var(--risk); opacity: 0.85;
}
.mux-channel.is-suspended span { color: var(--risk); }
.affected-models { display: grid; gap: 6px; margin: 10px 0; }
.affected-models li {
 padding: 8px 10px; border-radius: 6px;
 background: rgba(0, 0, 0, 0.22); border: 1px solid var(--border-d); color: var(--body-d);
}
.affected-models li.is-lit {
 border-color: var(--signal); background: rgba(255, 91, 147, 0.12); color: var(--title-d);
}
.pulse-origins {
 display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px;
}
.pulse-origins li {
 padding: 4px 8px; border-radius: var(--r-pill); font-size: 0.72rem; font-weight: 700;
 border: 1px solid var(--border-d); color: var(--aqua);
}
.export-checklist {
 display: grid; gap: 8px; margin: 12px 0 18px; counter-reset: ex;
}
.export-checklist li {
 padding: 12px 14px; border-radius: 8px;
 background: var(--card-l); border: 1px solid var(--border-l); color: var(--body-l);
}
.export-checklist b { color: var(--title-l); }
.about-brand-line {
 font-size: 1.15rem; font-weight: 800; color: var(--signal); margin: 8px 0 16px;
}
.aperture-stage.is-compare .sync-window {
 box-shadow: inset 0 3px 0 var(--aqua);
}
.source-chip.is-open {
 border-color: var(--aqua); background: rgba(57, 215, 197, 0.1);
}