/* AiC — ai-critic | warm editorial visual system */
:root {
  --bg: #0b100e;
  --bg-2: #111915;
  --ink: #e8eee9;
  --muted: #a5b1a8;
  --dim: #758279;
  --line: #202b25;
  --line-2: #2b3931;
  --acc: #83b89a;           /* AiC sage */
  --acc-soft: rgba(131, 184, 154, .12);
  --ok: #83bd91;
  --na: #839087;
  --warn: #dfad76;

  --f-sans: "Sora", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --wrap: 1200px;
  --r: 3px;
  --pad: clamp(20px, 4vw, 48px);
  --ease: cubic-bezier(.2, .7, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--f-sans); font-weight: 300; font-size: clamp(15.5px, 0.9vw + 12px, 17.5px); line-height: 1.8;
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
img, svg, canvas { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4, p, ul, ol, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
code, pre { font-family: var(--f-mono); }
::selection { background: var(--acc); color: #f1f3ef; }
:focus-visible { outline: 2px solid var(--acc); outline-offset: 3px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--bg); padding: 8px 14px; z-index: 100; }
.skip:focus { left: 8px; }

.wrap { width: min(var(--wrap), 100% - 2 * var(--pad)); margin-inline: auto; }
main, footer { position: relative; z-index: 1; }
#bubbles { position: fixed; inset: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; }

/* ---------- Buttons ---------- */
.btn {
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 10px; overflow: hidden;
  min-height: 48px; padding: 0 28px; border: 1px solid var(--line-2); border-radius: var(--r);
  font: 400 0.92rem var(--f-sans); letter-spacing: 0.02em; cursor: pointer;
  background: transparent; color: var(--ink);
  transition: border-color .3s, color .3s, box-shadow .3s, background .3s;
}
.btn:hover { border-color: var(--acc); color: var(--acc); box-shadow: 0 0 24px -6px var(--acc); }
.btn-solid { background: var(--ink); color: var(--bg); border-color: var(--ink); font-weight: 500; }
.btn-solid:hover { background: var(--acc); border-color: var(--acc); color: #f1f3ef; box-shadow: 0 8px 22px -12px rgba(131,184,154,.6); }
.btn-sm { min-height: 38px; padding: 0 18px; font-size: 0.82rem; }

/* ---------- Nav / logo ---------- */
.nav { position: fixed; inset: 0 0 auto 0; z-index: 50; transition: background .4s, border-color .4s, backdrop-filter .4s; border-bottom: 1px solid transparent; }
.nav.scrolled { background: rgba(11,16,14,.9); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-color: var(--line); }
.nav-in { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: inline-flex; align-items: center; gap: 12px; font: 500 1.02rem var(--f-sans); letter-spacing: 0.02em; }
.logo { width: 30px; height: 30px; color: var(--acc); filter: drop-shadow(0 0 6px rgba(131, 184, 154, .34)); overflow: visible; }
.logo .spin { transform-box: fill-box; transform-origin: center; animation: spin 36s linear infinite; }
.logo .core { animation: breathe 4s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
.nav-links { display: flex; align-items: center; gap: 36px; }
.nav-links a:not(.btn) { color: var(--muted); font-size: 0.88rem; position: relative; transition: color .3s; }
.nav-links a:not(.btn)::after { content: ""; position: absolute; left: 0; right: 0; bottom: -6px; height: 1px; background: var(--acc); transform: scaleX(0); transform-origin: left; transition: transform .4s var(--ease); }
.nav-links a:not(.btn):hover { color: var(--ink); }
.nav-links a:not(.btn):hover::after { transform: scaleX(1); }
.nav-toggle { display: none; width: 44px; height: 44px; background: none; border: 1px solid var(--line-2); border-radius: var(--r); color: var(--ink); cursor: pointer; padding: 0; }
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after { display: block; width: 18px; height: 1.5px; background: currentColor; margin: auto; position: relative; transition: transform .25s, top .25s; }
.nav-toggle span::before, .nav-toggle span::after { content: ""; position: absolute; left: 0; }
.nav-toggle span::before { top: -6px; } .nav-toggle span::after { top: 6px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { top: 0; transform: rotate(-45deg); }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes spin-r { to { transform: rotate(-360deg); } }
@keyframes breathe { 0%, 100% { opacity: .55; transform: scale(.9); } 50% { opacity: 1; transform: scale(1.1); } }
@keyframes rise { from { opacity: 0; transform: translateY(18px); filter: blur(8px); } to { opacity: 1; transform: none; filter: blur(0); } }
@keyframes scan { 0% { transform: translateY(-10%); opacity: 0; } 8% { opacity: .55; } 50% { opacity: .55; } 62%, 100% { transform: translateY(1100%); opacity: 0; } }
@keyframes glowpulse { 0%, 100% { opacity: .55; } 50% { opacity: 1; } }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100vh; min-height: 100svh; display: flex; align-items: center; padding: 120px 0 90px; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; right: -8%; top: 50%; width: 70vmin; height: 70vmin; transform: translateY(-50%); z-index: 0; pointer-events: none;
  background: radial-gradient(circle, rgba(131, 184, 154, .13), transparent 66%); animation: glowpulse 7s ease-in-out infinite;
}
#net { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; }
.hero::after { content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none; background: linear-gradient(90deg, #0b100e 0%, rgba(11,16,14,.94) 31%, rgba(11,16,14,.30) 65%, transparent 80%); }
.hero .wrap { position: relative; z-index: 2; }
.hero-copy { max-width: 640px; }
.tag { display: inline-flex; align-items: center; gap: 12px; font: 400 0.78rem var(--f-mono); color: var(--muted); margin-bottom: 28px; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--acc); box-shadow: 0 0 10px var(--acc); animation: glowpulse 2.8s ease-in-out infinite; flex: none; }
.hero h1 { font: 300 clamp(2.5rem, 5.8vw, 4.7rem)/1.1 var(--f-sans); letter-spacing: -0.035em; text-wrap: balance; }
.hero-sub { margin-top: 28px; color: var(--muted); max-width: 54ch; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 40px; }
.caption { position: absolute; right: var(--pad); bottom: 28px; z-index: 2; font: 400 0.72rem var(--f-mono); color: var(--dim); }
.scroll-hint { position: absolute; left: var(--pad); bottom: 28px; z-index: 2; font: 400 0.72rem var(--f-mono); color: var(--dim); display: flex; align-items: center; gap: 14px; }
.scroll-hint i { display: block; width: 1px; height: 40px; background: linear-gradient(var(--acc), transparent); transform-origin: top; animation: drip 2.8s ease-in-out infinite; }
@keyframes drip { 0% { transform: scaleY(0); } 50% { transform: scaleY(1); } 100% { transform: scaleY(1); opacity: 0; } }

/* hero load sequence */
.js .hero .w { display: inline-block; opacity: 0; animation: rise 1s var(--ease) forwards; }
.js .hero .tag, .js .hero .hero-sub, .js .hero .hero-cta { opacity: 0; animation: rise 1s var(--ease) forwards; }
.js .hero .tag { animation-delay: .1s; }
.js .hero .hero-sub { animation-delay: .9s; }
.js .hero .hero-cta { animation-delay: 1.1s; }

/* ---------- Sections ---------- */
.sec { position: relative; padding: clamp(80px, 12vw, 150px) 0; }
.sec::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, var(--line-2) 15%, var(--line-2) 85%, transparent); }
.js .sec::before { transform: scaleX(0); transition: transform 1.6s var(--ease); }
.js .sec.in::before { transform: scaleX(1); }
.sec-grid { display: grid; grid-template-columns: 130px 1fr; gap: clamp(24px, 5vw, 72px); }
.sec-mark { position: sticky; top: 100px; align-self: start; display: flex; align-items: center; gap: 12px; font: 400 0.78rem var(--f-mono); color: var(--muted); }
.mk { width: 22px; height: 22px; color: var(--acc); flex: none; }
.mk .spin { transform-box: fill-box; transform-origin: center; animation: spin 24s linear infinite; }
.sec h2 { font: 300 clamp(1.8rem, 3.6vw, 2.9rem)/1.2 var(--f-sans); letter-spacing: -0.03em; text-wrap: balance; max-width: 22ch; }
.lead { color: var(--muted); max-width: 62ch; margin-top: 24px; }
.body { margin-top: 56px; }
.small { font-size: 0.8rem; color: var(--dim); }
code.i, .lead code, .steps code { font-size: 0.84em; color: var(--acc); background: var(--acc-soft); padding: 1px 7px; border-radius: var(--r); }

/* reveal on scroll */
.js .r { opacity: 0; transform: translateY(18px); transition: opacity 1s var(--ease), transform 1s var(--ease); transition-delay: var(--d, 0ms); }
.js .r.in { opacity: 1; transform: none; }

/* spotlight that follows the pointer */
.glow { position: relative; }
.glow::before { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity .4s; background: radial-gradient(260px circle at var(--mx, 50%) var(--my, 50%), rgba(131, 184, 154, .09), transparent 70%); border-radius: inherit; }
.glow:hover::before { opacity: 1; }

/* HUD corner brackets */
.hud { position: relative; }
.hud::after {
  content: ""; position: absolute; inset: -1px; pointer-events: none; border-radius: var(--r);
  --c: var(--acc);
  background:
    linear-gradient(var(--c), var(--c)) top left / 14px 1px no-repeat, linear-gradient(var(--c), var(--c)) top left / 1px 14px no-repeat,
    linear-gradient(var(--c), var(--c)) top right / 14px 1px no-repeat, linear-gradient(var(--c), var(--c)) top right / 1px 14px no-repeat,
    linear-gradient(var(--c), var(--c)) bottom left / 14px 1px no-repeat, linear-gradient(var(--c), var(--c)) bottom left / 1px 14px no-repeat,
    linear-gradient(var(--c), var(--c)) bottom right / 14px 1px no-repeat, linear-gradient(var(--c), var(--c)) bottom right / 1px 14px no-repeat;
  opacity: .8;
}

/* ---------- Comparison ---------- */
.compare { border: 1px solid var(--line-2); border-radius: var(--r); overflow: hidden; background: rgba(255,255,255,.035); }
.compare-head { display: flex; justify-content: space-between; gap: 12px; padding: 12px 18px; border-bottom: 1px solid var(--line-2); font: 400 0.76rem var(--f-mono); color: var(--dim); }
.compare table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.compare th, .compare td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--line); font-weight: 300; vertical-align: top; }
.compare thead th { color: var(--muted); font: 400 0.8rem var(--f-mono); }
.compare tbody th { color: var(--muted); }
.compare tr:last-child th, .compare tr:last-child td { border-bottom: 0; }
.good { color: var(--ok); } .bad { color: var(--warn); }
.compare .scroll { overflow-x: auto; }
.illus { color: var(--warn); }

.principles { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 56px; border-top: 1px solid var(--line-2); }
.principles > div { padding: 28px 28px 0 0; }
.principles > div + div { padding-left: 28px; border-left: 1px solid var(--line); }
.principles h3 { font: 400 1.1rem var(--f-sans); margin-bottom: 10px; }
.principles p { color: var(--muted); font-size: 0.92rem; }

/* ---------- Steps / code ---------- */
.flow { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(32px, 5vw, 72px); align-items: start; }
.steps li { display: grid; grid-template-columns: 48px 1fr; gap: 8px; padding: 0 0 32px; position: relative; }
.steps li::before { content: ""; position: absolute; left: 13px; top: 36px; bottom: 6px; width: 1px; background: linear-gradient(var(--acc), transparent); opacity: .35; }
.steps li:last-child::before { display: none; }
.steps .n { width: 28px; height: 28px; border: 1px solid var(--acc); border-radius: 50%; display: grid; place-items: center; font: 400 0.76rem var(--f-mono); color: var(--acc); box-shadow: 0 0 14px -4px var(--acc); }
.steps h3 { font: 400 1.05rem var(--f-sans); margin-bottom: 4px; }
.steps p { color: var(--muted); font-size: 0.92rem; }

.codeblock { border: 1px solid var(--line-2); border-radius: var(--r); background: #1c2c25; min-width: 0; }
.codeblock-bar { display: flex; align-items: center; justify-content: space-between; padding: 8px 8px 8px 18px; border-bottom: 1px solid var(--line-2); font: 400 0.76rem var(--f-mono); color: var(--dim); }
.codeblock pre { margin: 0; padding: 22px; overflow-x: auto; font-size: 0.84rem; line-height: 1.85; color: #e8eee9; tab-size: 4; }
.k { color: #a8cfb4; } .s { color: #b7d19e; } .nm { color: #e4bf80; } .f { color: #fff; font-weight: 500; }
.copy { min-height: 34px; padding: 0 14px; background: transparent; color: var(--muted); border: 1px solid var(--line-2); border-radius: var(--r); font: 400 0.74rem var(--f-mono); cursor: pointer; transition: color .3s, border-color .3s; }
.copy:hover { color: var(--acc); border-color: var(--acc); }
.copy.done { color: var(--ok); border-color: var(--ok); }
.outputs { margin-top: 28px; border-top: 1px solid var(--line-2); }
.outputs div { display: grid; grid-template-columns: minmax(150px, 230px) 1fr; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 0.9rem; }
.outputs dt { font: 400 0.82rem var(--f-mono); color: var(--acc); }
.outputs dd { color: var(--muted); }

/* ---------- Dimensions ---------- */
.dim { display: grid; grid-template-columns: 64px minmax(0, 1fr) minmax(0, 1.4fr); gap: 20px 36px; padding: 34px 12px; border-top: 1px solid var(--line-2); }
.dim:last-child { border-bottom: 1px solid var(--line-2); }
.dim .ic { width: 40px; height: 40px; color: var(--acc); transition: transform .6s var(--ease), filter .4s; }
.dim:hover .ic { transform: rotate(8deg) scale(1.08); filter: drop-shadow(0 0 8px rgba(131, 184, 154, .35)); }
.dim h3 { font: 400 1.3rem var(--f-sans); letter-spacing: -0.015em; }
.dim .q { color: var(--muted); font-size: 0.92rem; margin-top: 6px; }
.dim dl { display: grid; gap: 14px; font-size: 0.9rem; }
.dim dt { font: 400 0.72rem var(--f-mono); color: var(--dim); margin-bottom: 2px; }
.dim dd { color: var(--muted); }

/* ---------- Tabs ---------- */
.tabs { display: grid; grid-template-columns: 240px 1fr; gap: clamp(24px, 4vw, 56px); }
.tablist { display: flex; flex-direction: column; border-left: 1px solid var(--line-2); }
.tab { text-align: left; padding: 12px 20px; margin-left: -1px; border: 0; border-left: 1px solid transparent; background: none; color: var(--dim); font: 300 0.92rem var(--f-sans); cursor: pointer; transition: color .3s, border-color .3s, padding .3s; }
.tab:hover { color: var(--ink); }
.tab[aria-selected="true"] { color: var(--ink); border-left-color: var(--acc); padding-left: 26px; }
.tabpanel[hidden] { display: none; }
.tabpanel { animation: rise .6s var(--ease); }
.tabpanel h3 { font: 300 1.6rem var(--f-sans); letter-spacing: -0.02em; margin-bottom: 10px; }
.tabpanel > p { color: var(--muted); max-width: 60ch; }
.cmd { display: flex; align-items: center; justify-content: space-between; gap: 12px; border: 1px solid var(--line-2); border-radius: var(--r); padding: 8px 8px 8px 18px; background: #1c2c25; font: 400 0.86rem var(--f-mono); }
.cmd code { overflow-x: auto; white-space: nowrap; }
.cmd .p { color: var(--acc); margin-right: 10px; user-select: none; }
.tabpanel .cmd { margin: 22px 0 6px; max-width: 460px; }
.matrix { margin-top: 24px; border-top: 1px solid var(--line-2); max-width: 560px; }
.matrix div { display: flex; justify-content: space-between; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 0.9rem; }

.status { font: 400 0.74rem var(--f-mono); white-space: nowrap; display: inline-flex; align-items: center; gap: 8px; }
.status::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.st-ok { color: var(--ok); } .st-na { color: var(--na); } .st-inc { color: var(--warn); }
.st-na::before { background: transparent; border: 1px solid currentColor; }
.st-inc::before { animation: glowpulse 2.2s ease-in-out infinite; box-shadow: 0 0 8px currentColor; }

/* ---------- Report ---------- */
.perspective { perspective: 1400px; }
.report { position: relative; overflow: hidden; border: 1px solid var(--line-2); border-radius: var(--r); background: rgba(19,28,23,.96); min-width: 0; transform-style: preserve-3d; transition: transform .35s ease-out, opacity 1s var(--ease); will-change: transform; }
.scanline { position: absolute; left: 0; right: 0; top: 0; height: 9%; pointer-events: none; z-index: 1; background: linear-gradient(transparent, rgba(131, 184, 154, .12), transparent); border-bottom: 1px solid rgba(131, 184, 154, .25); animation: scan 9s ease-in-out infinite; }
.report-bar { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 12px 18px; border-bottom: 1px solid var(--line-2); font: 400 0.74rem var(--f-mono); color: var(--dim); flex-wrap: wrap; }
.report-top { display: flex; justify-content: space-between; align-items: baseline; padding: 22px 18px 12px; }
.report-top > span:first-child { font: 400 0.8rem var(--f-mono); color: var(--muted); }
.score { font: 200 2.6rem var(--f-sans); letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.score small { font: 400 0.85rem var(--f-mono); color: var(--dim); }
.row { position: relative; }
.row > button { width: 100%; display: grid; grid-template-columns: minmax(0, 1fr) 150px 120px 14px; align-items: center; gap: 16px; padding: 14px 18px; background: none; border: 0; border-top: 1px solid var(--line); color: inherit; font: inherit; text-align: left; cursor: pointer; transition: background .3s; }
.row > button:hover { background: rgba(131, 184, 154, .06); }
.row .nm-d { font-size: 0.95rem; font-weight: 400; }
.bar { height: 2px; background: var(--line-2); position: relative; }
.bar i { position: absolute; left: 0; top: 0; height: 100%; width: 0; background: var(--acc); box-shadow: 0 0 10px var(--acc); transition: width 1.4s var(--ease); }
.bar.empty { background: repeating-linear-gradient(90deg, var(--line-2) 0 3px, transparent 3px 7px); }
.chev { width: 12px; height: 12px; color: var(--dim); transition: transform .3s var(--ease), color .3s; }
.row.open .chev { transform: rotate(90deg); color: var(--acc); }
.detail { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .45s var(--ease); font-size: 0.88rem; color: var(--muted); }
.detail > div { overflow: hidden; padding: 0 18px; }
.row.open .detail { grid-template-rows: 1fr; }
.row.open .detail > div { padding-bottom: 22px; padding-top: 4px; }
.detail dl { display: grid; grid-template-columns: auto 1fr; gap: 4px 20px; margin-bottom: 14px; font: 400 0.78rem var(--f-mono); }
.detail dt { color: var(--dim); } .detail dd { color: var(--ink); }
.detail p + p { margin-top: 6px; }
.detail b { color: var(--ink); font-weight: 500; }
.report-foot { padding: 14px 18px; border-top: 1px solid var(--line); font-size: 0.76rem; color: var(--dim); }

.report-layout { display: grid; grid-template-columns: 1.25fr 0.75fr; gap: clamp(28px, 4vw, 56px); align-items: start; }
.guide { display: grid; gap: 28px; }
.guide h3 { font: 400 1.1rem var(--f-sans); margin-bottom: 8px; }
.guide p { color: var(--muted); font-size: 0.92rem; }
.guide .status { margin-bottom: 6px; }

/* ---------- Limits ---------- */
.limits { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 56px; }
.limits li { padding: 22px 12px; border-top: 1px solid var(--line-2); color: var(--muted); font-size: 0.94rem; }
.limits li strong { display: block; color: var(--ink); font: 400 1.05rem var(--f-sans); margin-bottom: 4px; }

/* ---------- Install / open source ---------- */
.links li a { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; padding: 18px 0; border-top: 1px solid var(--line-2); transition: padding .4s var(--ease), color .3s; }
.links li:last-child a { border-bottom: 1px solid var(--line-2); }
.links li a:hover { padding-left: 14px; color: var(--acc); }
.links small { font: 400 0.76rem var(--f-mono); color: var(--dim); }
.install-two { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 5vw, 72px); align-items: start; }
.os { display: grid; grid-template-columns: repeat(5, 1fr); margin-top: 56px; border-top: 1px solid var(--line-2); }
.os > div { padding: 24px 20px 12px 0; }
.os > div + div { padding-left: 20px; border-left: 1px solid var(--line); }
.os h3 { font: 400 1.02rem var(--f-sans); margin-bottom: 8px; }
.os p { font-size: 0.86rem; color: var(--muted); line-height: 1.65; }
.os a { color: var(--ink); border-bottom: 1px solid var(--acc); }
.lic { display: inline-block; font: 400 0.76rem var(--f-mono); color: var(--muted); border: 1px solid var(--line-2); padding: 3px 12px; border-radius: 999px; margin-bottom: 24px; }

/* ---------- Final ---------- */
.final { position: relative; text-align: center; padding: clamp(110px, 16vw, 210px) 0; overflow: hidden; }
.final::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, var(--line-2) 15%, var(--line-2) 85%, transparent); }
.reactor { position: absolute; left: 50%; top: 50%; width: min(620px, 120vw); aspect-ratio: 1; transform: translate(-50%, -50%); color: var(--acc); opacity: .55; pointer-events: none; }
.reactor .a { transform-box: fill-box; transform-origin: center; animation: spin 80s linear infinite; }
.reactor .b { transform-box: fill-box; transform-origin: center; animation: spin-r 55s linear infinite; }
.reactor .c { transform-box: fill-box; transform-origin: center; animation: spin 120s linear infinite; }
.reactor .core { animation: glowpulse 5s ease-in-out infinite; }
.final .wrap { position: relative; z-index: 2; }
.final h2 { font: 300 clamp(1.9rem, 4.4vw, 3.3rem)/1.22 var(--f-sans); letter-spacing: -0.03em; max-width: 20ch; margin: 0 auto 36px; text-wrap: balance; }

footer { border-top: 1px solid var(--line); padding: 48px 0 56px; color: var(--muted); font-size: 0.88rem; background: rgba(11,16,14,.82); }
.foot { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 28px; }
.foot ul { display: flex; flex-wrap: wrap; gap: 10px 28px; }
.foot a:hover { color: var(--acc); }
.foot-note { margin-top: 32px; max-width: 72ch; font-size: 0.78rem; color: var(--dim); }
.foot-jp { font-size: 0.7rem; color: var(--dim); opacity: .6; letter-spacing: .3em; margin-left: 6px; }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .js .r, .js .hero .w, .js .hero .tag, .js .hero .hero-sub, .js .hero .hero-cta { opacity: 1 !important; transform: none !important; filter: none !important; }
  .js .sec::before { transform: none; }
  .scanline, #bubbles { display: none; }
}

/* ---------- Responsive ---------- */
.sec-grid > *, .install-two > *, .flow > *, .report-layout > *, .tabs > * { min-width: 0; }
@media (max-width: 1080px) {
  .os { grid-template-columns: repeat(3, 1fr); row-gap: 28px; }
  .os > div:nth-child(4) { padding-left: 0; border-left: 0; }
  .dim { grid-template-columns: 56px minmax(0, 1fr); }
  .dim dl { grid-column: 2; }
}
@media (max-width: 900px) {
  .sec-grid, .flow, .report-layout, .install-two, .tabs { grid-template-columns: minmax(0, 1fr); }
  .sec-grid { gap: 24px; }
  .sec-mark { position: static; }
  .tablist { flex-direction: row; flex-wrap: wrap; border-left: 0; border-bottom: 1px solid var(--line-2); }
  .tab { margin: 0 0 -1px; padding: 10px 14px; border-left: 0; border-bottom: 1px solid transparent; }
  .tab[aria-selected="true"] { border-bottom-color: var(--acc); padding-left: 14px; }
  .principles { grid-template-columns: 1fr; }
  .principles > div, .principles > div + div { padding: 24px 0; border-left: 0; border-bottom: 1px solid var(--line); }
  .limits { grid-template-columns: 1fr; }
  .hero::after { background: linear-gradient(180deg, rgba(11,16,14,.04) 0%, rgba(11,16,14,.56) 55%, #0b100e 100%); }
  .hero::before { right: -30%; top: 24%; width: 100vmin; height: 100vmin; }
  .hero { align-items: flex-end; padding-bottom: 110px; }
  .caption { display: none; }
}
@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .nav { background: var(--bg); border-bottom: 1px solid var(--line); }
  .nav-links { position: absolute; top: 72px; left: 0; right: 0; background: var(--bg); flex-direction: column; align-items: stretch; gap: 0; padding: 4px var(--pad) 24px; border-bottom: 1px solid var(--line); display: none; }
  .nav-links.open { display: flex; animation: rise .35s var(--ease); }
  .nav-links a:not(.btn) { padding: 16px 0; border-bottom: 1px solid var(--line); font-size: 1rem; }
  .nav-links a:not(.btn)::after { display: none; }
  .nav-links .btn { margin-top: 18px; }
  .row > button { grid-template-columns: minmax(0, 1fr) auto 14px; }
  .row .bar { display: none; }
  .os { grid-template-columns: 1fr; }
  .os > div, .os > div + div { padding: 20px 0; border-left: 0; border-bottom: 1px solid var(--line); }
  .outputs div { grid-template-columns: 1fr; gap: 2px; }
  .compare th, .compare td { padding: 12px; }
  .dim { grid-template-columns: 1fr; gap: 14px; padding: 30px 0; }
  .dim dl { grid-column: 1; }
  .scroll-hint { display: none; }
}
@media (max-width: 480px) {
  .hero-cta .btn { width: 100%; }
  .detail dl { grid-template-columns: 1fr; gap: 0; }
  .detail dd { margin-bottom: 6px; }
}


/* AiC dark theme: graphite surfaces, soft sage accents, no electric-blue fills. */
body { background: #0b100e; color: var(--ink); }
.hero { background: linear-gradient(125deg, #111915 0%, #0d1310 55%, #101813 100%); }
.hero::before { background: radial-gradient(circle, rgba(131,184,154,.12), transparent 68%); }
.hero::after { background: linear-gradient(90deg, #0b100e 0%, rgba(11,16,14,.96) 31%, rgba(11,16,14,.50) 64%, transparent 82%); }
.nav.scrolled { background: rgba(11,16,14,.86); box-shadow: 0 10px 30px rgba(0,0,0,.22); }
.btn { border-radius: 999px; }
.btn:hover { box-shadow: 0 8px 22px -12px rgba(131,184,154,.32); }
.btn-solid { background: #274638; border-color: #274638; color: #f1f3ef; }
.btn-solid:hover { background: #345844; border-color: #345844; color: #f1f3ef; }
.brand { gap: 10px; letter-spacing: 0; }
.brand-mark { display: inline-flex; align-items: baseline; justify-content: center; gap: 0; width: 48px; height: 38px; padding: 3px 5px 5px; border-radius: 11px; background: #274638; color: #f1f3ef; font: 600 1.04rem/1.8 var(--f-sans); letter-spacing: -.09em; box-shadow: 0 5px 16px rgba(0,0,0,.30); }
.brand-mark i { color: #a9ceb4; font-style: normal; font-weight: 400; }
.brand-name { color: var(--muted); font: 500 .78rem var(--f-mono); letter-spacing: .025em; }
.proof-strip { display: inline-flex; align-items: baseline; gap: 10px; padding: 8px 14px; margin: 0 0 22px; border: 1px solid rgba(131,184,154,.24); border-radius: 999px; background: rgba(255,255,255,.035); color: var(--muted); }
.proof-strip strong { color: var(--acc); font: 500 .9rem var(--f-mono); letter-spacing: -.02em; }
.proof-strip span { font-size: .78rem; }
.hero h1 { max-width: 12ch; }
.hero-sub { color: #a5b1a8; }
.compare { background: #111915; box-shadow: 0 18px 42px rgba(0,0,0,.16); }
.report { background: #111915; box-shadow: 0 22px 55px rgba(0,0,0,.22); }
.codeblock { background: #101713; border-color: #30443a; }
.k { color: #a8cfb4; } .s { color: #b7d19e; } .nm { color: #e4bf80; } .f { color: #f1f3ef; font-weight: 500; }
.copy { border-radius: 999px; }
.report .copy, .codeblock .copy { color: #b8c8be; border-color: #486052; }
.report .copy:hover, .codeblock .copy:hover { color: #d4ead9; border-color: #8ab29a; }
.final { background: linear-gradient(180deg, transparent, rgba(25,38,31,.70)); }
footer { background: rgba(11,16,14,.84); }
@media (max-width: 900px) {
  .hero { background: linear-gradient(180deg, #101713 0%, #0b100e 82%); }
  .hero::after { background: linear-gradient(180deg, rgba(11,16,14,.02) 0%, rgba(11,16,14,.63) 56%, #0b100e 100%); }
}
@media (max-width: 760px) {
  .nav { background: rgba(11,16,14,.96); }
  .nav-links { background: #0b100e; }
}