/* Home page: hero, simulator, features, numbers, architecture, download, FAQ. */

.hide-sm { display: inline; }
@media (max-width: 520px) { .hide-sm { display: none; } }

/* Hero */
.hero { position: relative; overflow: hidden; padding: 168px 0 120px; text-align: center; }
@media (max-width: 760px) { .hero { padding: 132px 0 88px; } }
.hero-inner { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; }
.hero .badge { margin-bottom: 32px; }
.display { font-size: var(--text-display); font-weight: 800; letter-spacing: var(--tracking-tight); line-height: 1.04; margin: 0; }
.cycle { display: inline-block; }
.lede { max-width: 640px; margin: 28px auto 0; font-size: 18px; color: var(--fg-body); }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 40px; }
.hero-orb.small { width: min(700px, 120vw); height: 360px; bottom: -160px; }

.lang-strip { border-top: 1px solid var(--border-subtle); border-bottom: 1px solid var(--border-subtle); padding: 22px 0; background: var(--bg-surface); }

.fine { margin-top: 20px; font-size: 13px; color: var(--text-tertiary); max-width: 860px; }
.fine code, .faq code, .dl-note code, .feature-body kbd, .sim code { font-size: 0.92em; color: var(--text-primary); background: rgba(255, 248, 230, 0.06); padding: 1px 5px; border-radius: 4px; }
kbd { font-family: var(--font-mono); }

/* ─── Simulator ─── */
.sim { position: relative; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); overflow: hidden; }
@media (max-width: 980px) { .sim { grid-template-columns: minmax(0, 1fr); } }
.sim.firing { box-shadow: inset 0 1px 0 rgba(255, 248, 230, 0.08), 0 4px 24px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(208, 82, 77, 0.7), 0 0 44px rgba(208, 82, 77, 0.25); }
.sim-editor { display: flex; flex-direction: column; min-width: 0; border-right: 1px solid var(--border-subtle); }
@media (max-width: 980px) { .sim-editor { border-right: 0; border-bottom: 1px solid var(--border-subtle); } }
.sim-tabs { display: flex; align-items: stretch; gap: 2px; padding: 0 8px; border-bottom: 1px solid var(--border-subtle); background: var(--bg-media); overflow-x: auto; }
.sim-tabs [role="tab"] { font: 500 13px var(--font-mono); color: var(--text-tertiary); background: none; border: 0; border-bottom: 2px solid transparent; padding: 12px 12px 10px; cursor: pointer; white-space: nowrap; }
.sim-tabs [role="tab"]:hover { color: var(--text-primary); }
.sim-tabs [role="tab"][aria-selected="true"] { color: var(--text-primary); border-bottom-color: var(--accent); }
.sim-parser { margin-left: auto; align-self: center; font: 11px var(--font-mono); color: var(--text-tertiary); padding: 0 6px; white-space: nowrap; }
@media (max-width: 560px) { .sim-parser { display: none; } }

.code-area { position: relative; display: grid; grid-template-columns: 52px minmax(0, 1fr); height: 340px; background: #0c0b09; }
.gutter { overflow: hidden; padding: 14px 0; font: 13px/21px var(--font-mono); color: var(--text-muted); text-align: right; user-select: none; }
.gutter div { position: relative; padding-right: 12px; height: 21px; }
.gutter div.has-error { color: var(--error); }
.gutter div.has-warn { color: var(--warn); }
.gutter div.has-error::before, .gutter div.has-warn::before { content: ""; position: absolute; left: 10px; top: 7px; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
#sim-code {
  width: 100%; height: 100%; resize: none; border: 0; outline: none; padding: 14px 16px 14px 4px;
  background: transparent; color: var(--text-primary); font: 13px/21px var(--font-mono); tab-size: 2;
  white-space: pre; overflow: auto; caret-color: var(--accent-bright);
  font-variant-ligatures: none; /* show => as typed, not as an arrow */
}
#sim-code:focus-visible { outline: none; box-shadow: inset 0 0 0 1px var(--border-accent); }
.lsp-bar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; padding: 10px 12px; border-top: 1px solid var(--border-subtle); background: var(--bg-media); }
.lsp-bar[hidden] { display: none; }
.sub { font: 12px var(--font-mono); color: var(--text-tertiary); }
.problems { border-top: 1px solid var(--border-subtle); min-height: 118px; }
.problems-head { display: flex; justify-content: space-between; padding: 10px 16px 6px; font: 600 12px var(--font-mono); color: var(--text-tertiary); letter-spacing: 0.04em; text-transform: uppercase; }
#problems { list-style: none; margin: 0; padding: 0 8px 10px; max-height: 128px; overflow: auto; }
#problems li { display: grid; grid-template-columns: 14px 64px minmax(0, 1fr); gap: 8px; align-items: baseline; padding: 5px 8px; border-radius: 6px; font-size: 13px; color: var(--fg-body); cursor: pointer; }
#problems li:hover, #problems li:focus-visible { background: rgba(255, 248, 230, 0.04); color: var(--text-primary); }
#problems .sev { width: 8px; height: 8px; border-radius: 50%; align-self: center; }
#problems .sev.error { background: var(--error); }
#problems .sev.warn { background: var(--warn); }
#problems .sev.info { background: var(--fg-body); }
#problems .where { font: 12px var(--font-mono); color: var(--text-tertiary); }
#problems .msg { overflow-wrap: anywhere; }
#problems .src { color: var(--text-tertiary); font: 11px var(--font-mono); margin-left: 6px; }
#problems li.empty { display: block; cursor: default; color: var(--text-tertiary); }
#problems li.empty:hover { background: none; }

.sim-side { display: flex; flex-direction: column; gap: 16px; padding: 22px; min-width: 0; }
.pipeline { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.pipeline li { display: grid; grid-template-columns: 28px minmax(0, 1fr); gap: 12px; align-items: center; padding: 9px 12px; border-radius: var(--r-md); background: rgba(255, 248, 230, 0.02); transition: background var(--dur-base) ease, box-shadow var(--dur-base) ease; }
.pipeline .step-n { width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center; font: 600 12px var(--font-mono); color: var(--text-tertiary); background: var(--bg-surface); box-shadow: inset 0 0 0 1px var(--border-medium); }
.pipeline b { display: block; font: 600 13px var(--font-mono); color: var(--text-primary); }
.pipeline span:not(.step-n) { display: block; font-size: 12.5px; color: var(--text-tertiary); overflow-wrap: anywhere; }
.pipeline li.pass .step-n { color: var(--accent-bright); box-shadow: inset 0 0 0 1px var(--border-accent); }
.pipeline li.stop { background: rgba(255, 248, 230, 0.05); }
.pipeline li.stop .step-n { color: var(--text-primary); box-shadow: inset 0 0 0 1px rgba(255, 248, 230, 0.4); }
.pipeline li.fire { background: rgba(208, 82, 77, 0.12); }
.pipeline li.fire .step-n { color: #fff; background: var(--error); box-shadow: none; }
.verdict { font-size: 14px; color: var(--text-primary); min-height: 1.6em; }
.cd-bar { height: 4px; border-radius: 2px; background: rgba(255, 248, 230, 0.06); overflow: hidden; }
.cd-bar span { display: block; height: 100%; width: 0; background: var(--accent); border-radius: 2px; }
.counters { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; margin: 0; }
.counters div { padding: 10px; border-radius: var(--r-md); background: var(--bg-surface); box-shadow: inset 0 1px 0 rgba(255, 248, 230, 0.05); min-width: 0; }
.counters dt { font: 11px var(--font-mono); color: var(--text-tertiary); letter-spacing: 0.03em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.counters dd { margin: 2px 0 0; font: 800 26px/1.1 var(--font-sans); color: var(--text-primary); font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }
#c-played { color: var(--accent-bright); }
@media (max-width: 420px) { .counters { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.controls { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.field { display: inline-flex; align-items: center; gap: 8px; font: 12px var(--font-mono); color: var(--text-tertiary); }
.field select { font: 500 13px var(--font-mono); color: var(--text-primary); background: var(--bg-card); border: 1px solid var(--border-medium); border-radius: 8px; padding: 7px 10px; }
.field select:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.log { list-style: none; margin: 0; padding: 10px 12px; border-radius: var(--r-md); background: #0c0b09; font: 12px/1.7 var(--font-mono); color: var(--text-tertiary); height: 128px; overflow: auto; display: flex; flex-direction: column-reverse; }
.log li { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.log .t { color: var(--text-muted); margin-right: 8px; }
.log .fired { color: var(--accent-bright); }
.log .cooled { color: var(--fg-body); }

.fahh-burst { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%) scale(0.6); font: 800 clamp(64px, 12vw, 150px)/1 var(--font-sans); letter-spacing: -0.04em; color: var(--text-primary); text-shadow: 0 0 40px rgba(208, 82, 77, 0.7); opacity: 0; pointer-events: none; }
.fahh-burst.go { animation: burst 900ms var(--ease-out); }
@keyframes burst { 0% { opacity: 0; transform: translate(-50%, -50%) scale(0.6); } 18% { opacity: 1; transform: translate(-50%, -50%) scale(1.04); } 100% { opacity: 0; transform: translate(-50%, -60%) scale(1.18); } }

/* ─── Features ─── */
.feature-grid { display: grid; gap: 20px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 980px) { .feature-grid { grid-template-columns: minmax(0, 1fr); } }
.feature { overflow: hidden; display: flex; flex-direction: column; }
.media { height: 240px; background: var(--bg-media); border-bottom: 1px solid var(--border-subtle); position: relative; overflow: hidden; display: grid; place-items: center; }
.feature-body { padding: 24px; display: grid; gap: 10px; }
.feature-body p { font-size: 15px; }

.mock-code { font: 13px/24px var(--font-mono); color: var(--text-primary); width: 84%; position: relative; }
.mock-code p { margin: 0; white-space: pre; }
.mock-code i { font-style: normal; color: var(--text-muted); display: inline-block; width: 22px; }
.mock-code .k { font-style: normal; color: var(--accent); }
.mock-code u { text-decoration: underline wavy var(--error); text-underline-offset: 4px; text-decoration-thickness: 1.5px; }
.mock-code .tip { position: absolute; left: 70px; top: 60px; max-width: calc(100% - 70px); background: var(--bg-card); box-shadow: inset 0 1px 0 rgba(255, 248, 230, 0.08), 0 8px 24px rgba(0, 0, 0, 0.5); padding: 6px 10px; border-radius: 8px; font-size: 12px; white-space: nowrap; }
.mock-code .tip span { color: var(--text-tertiary); margin-left: 6px; }

.media-wave { align-content: center; gap: 18px; padding: 0 28px; }
.ticks { display: flex; gap: 6px; width: 100%; justify-content: center; }
.ticks span { width: 6px; height: 22px; border-radius: 3px; background: rgba(208, 82, 77, 0.28); }
.ticks span.hit { background: var(--error); box-shadow: 0 0 12px rgba(208, 82, 77, 0.8); }
.window { width: 100%; height: 2px; background: linear-gradient(to right, var(--accent), rgba(212, 160, 60, 0.15)); position: relative; }
.window span { position: absolute; left: 0; top: 6px; font: 11px var(--font-mono); color: var(--accent); }
.wave { display: flex; gap: 5px; align-items: center; height: 70px; justify-content: center; margin-top: 10px; }
.wave span { width: 5px; border-radius: 3px; background: var(--accent); opacity: 0.85; animation: eq 1.4s ease-in-out infinite; }
.wave span:nth-child(odd) { animation-delay: -0.4s; }
.wave span:nth-child(3n) { animation-delay: -0.8s; }
.wave span:nth-child(1) { height: 14px; } .wave span:nth-child(2) { height: 30px; } .wave span:nth-child(3) { height: 52px; }
.wave span:nth-child(4) { height: 66px; } .wave span:nth-child(5) { height: 44px; } .wave span:nth-child(6) { height: 58px; }
.wave span:nth-child(7) { height: 36px; } .wave span:nth-child(8) { height: 24px; } .wave span:nth-child(9) { height: 40px; }
.wave span:nth-child(10) { height: 20px; } .wave span:nth-child(11) { height: 12px; } .wave span:nth-child(12) { height: 8px; }
@keyframes eq { 50% { transform: scaleY(0.55); } }

.mock-term { font: 12.5px/22px var(--font-mono); color: var(--text-primary); width: 86%; }
.mock-term p { margin: 0; white-space: pre; overflow: hidden; text-overflow: ellipsis; }
.mock-term b { color: var(--accent); font-weight: 500; }
.mock-term .dim { color: var(--text-tertiary); }
.mock-term .err { color: var(--error); }
.caret { display: inline-block; width: 8px; height: 15px; background: var(--text-primary); vertical-align: -2px; animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.mini-grid { display: grid; gap: 20px; grid-template-columns: repeat(4, minmax(0, 1fr)); margin-top: 20px; }
@media (max-width: 980px) { .mini-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .mini-grid { grid-template-columns: minmax(0, 1fr); } }
.mini { padding: 24px; display: grid; gap: 10px; align-content: start; }
.mini p { font-size: 14.5px; }
.icon.big { width: 42px; height: 42px; padding: 10px; border-radius: var(--r-md); background: var(--bg-surface); box-shadow: inset 0 0 0 1px var(--border-medium); color: var(--accent); }

/* ─── Numbers ─── */
.stats { overflow: hidden; }
.binary { position: absolute; inset: 0; font: 12px/1.6 var(--font-mono); color: var(--accent); opacity: 0.05; overflow: hidden; word-break: break-all; padding: 20px; pointer-events: none; user-select: none; -webkit-mask-image: radial-gradient(ellipse at 70% 50%, #000, transparent 75%); mask-image: radial-gradient(ellipse at 70% 50%, #000, transparent 75%); }
.stats-inner { position: relative; display: grid; gap: 48px; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); align-items: center; }
@media (max-width: 900px) { .stats-inner { grid-template-columns: minmax(0, 1fr); } }
.stats-note { margin-top: 18px; font-size: 16px; }
.stat-cards { display: grid; gap: 16px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 420px) { .stat-cards { grid-template-columns: minmax(0, 1fr); } }
.stat { padding: 28px; }
.stat .num { font: 800 clamp(48px, 6vw, 76px)/1 var(--font-sans); letter-spacing: -0.04em; color: var(--text-primary); margin: 0 0 10px; font-variant-numeric: tabular-nums; }
.stat .unit { font-size: 0.36em; color: var(--accent); margin-left: 6px; letter-spacing: 0; }
.stat p:last-child { font-size: 14.5px; }

/* ─── Architecture ─── */
.arch-grid { display: grid; gap: 20px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 760px) { .arch-grid { grid-template-columns: minmax(0, 1fr); } }
.arch { padding: 28px; position: relative; }
.arch-n { position: absolute; right: 24px; top: 20px; font: 600 13px var(--font-mono); color: var(--text-muted); }
.arch h3 { padding-right: 36px; }
.arch .meta { margin: 6px 0 14px; }
.arch p:last-child { font-size: 15px; }

/* ─── Download ─── */
.dl-grid { display: grid; gap: 20px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 980px) { .dl-grid { grid-template-columns: minmax(0, 1fr); } }
.dl { padding: 28px; display: flex; flex-direction: column; gap: 14px; }
.dl-head { display: flex; align-items: center; gap: 14px; }
.os-icon { width: 42px; height: 42px; border-radius: var(--r-md); display: grid; place-items: center; background: var(--bg-surface); box-shadow: inset 0 0 0 1px var(--border-medium); color: var(--text-primary); flex: none; }
.dl-head h3 { font-size: 24px; font-weight: 700; }
.for-you { display: none; margin-left: auto; font: 11px var(--font-mono); color: var(--accent); letter-spacing: 0.04em; }
.dl.featured .for-you { display: inline; }
.dl.featured .dl-main { border-color: var(--accent); box-shadow: 0 0 8px rgba(212, 160, 60, 0.55), 0 0 20px rgba(212, 160, 60, 0.25), 0 0 40px rgba(212, 160, 60, 0.1); animation: btn-pulse 2.8s ease-in-out infinite; }
.dl .meta { margin: -4px 0 0; }
.dl-main { width: 100%; }
.dl-alt { list-style: none; margin: 0; padding: 0; display: flex; gap: 16px; flex-wrap: wrap; font-size: 14px; }
.dl-note { font-size: 13px; color: var(--text-tertiary); margin-top: auto; }

/* ─── FAQ ─── */
.faq { display: grid; gap: 12px; }
.faq details { padding: 0; }
.faq summary { list-style: none; cursor: pointer; padding: 20px 24px; font-weight: 600; color: var(--text-primary); display: flex; justify-content: space-between; gap: 16px; align-items: center; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 400 20px var(--font-mono); color: var(--accent); transition: transform var(--dur-base) var(--ease-out); flex: none; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 24px 22px; font-size: 15px; }

/* ─── CTA ─── */
.cta { overflow: hidden; text-align: center; }
.cta-inner { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; }
.cta h2 { font-size: clamp(34px, 4.5vw, 60px); font-weight: 800; }

.foot-tag { margin-top: 14px; font-size: 14px; max-width: 320px; }