:root {
  --page: #f3f1ea;
  --paper: #faf7ef;
  --paper-2: #f0ece1;
  --ink: #222522;
  --muted: #70736d;
  --faint: #9b9d96;
  --line: #ddd7c9;
  --line-strong: #c9c3b4;
  --stage: #292a28;
  --stage-deep: #181a1c;
  --stage-surface: #24282a;
  --stage-line: rgba(255, 255, 255, .12);
  --stage-text: #ece9e2;
  --stage-muted: #949894;
  --mint: #69b9a2;
  --mint-dark: #287966;
  --mint-bright: #7cc7b1;
  --orange: #c96442;
  --orange-hover: #d97250;
  --gold: #d1a857;
  --red: #d0554b;
  --indigo: #7b86d5;
  --purple: #a08bd8;
  --display: "Source Han Serif SC", "Noto Serif SC", "Songti SC", STSong, serif;
  --sans: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: clip; }
body { margin: 0; overflow-x: clip; color: var(--ink); background: var(--page); font: 16px/1.6 var(--sans); }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
img, video { display: block; max-width: 100%; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { letter-spacing: 0; font-family: var(--display); }
button:focus-visible, a:focus-visible { outline: 2px solid var(--mint); outline-offset: 3px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 66px;
  padding: 0 32px;
  display: grid;
  grid-template-columns: 240px 1fr 240px;
  align-items: center;
  border-bottom: 1px solid var(--line);
  background: rgba(243, 241, 234, .96);
  backdrop-filter: blur(14px);
}
.brand { width: max-content; display: inline-flex; align-items: center; gap: 10px; }
.brand img { width: 40px; height: 40px; object-fit: contain; }
.brand-copy { display: flex; align-items: baseline; gap: 8px; }
.brand b { font-family: var(--display); font-size: 21px; }
.brand small { color: var(--muted); font: 10px var(--mono); }
.beta-badge { padding: 2px 7px; color: var(--mint-dark); border: 1px solid var(--mint-dark); font-size: 10px; font-weight: 700; line-height: 1.5; }
.site-header nav { justify-self: center; display: flex; gap: 36px; }
.site-header nav a { color: #555952; font-size: 13px; }
.site-header nav a:hover { color: var(--mint-dark); }
.header-cta { justify-self: end; padding: 0; display: inline-flex; align-items: center; gap: 18px; color: var(--mint-dark); border: 0; background: transparent; font-size: 13px; font-weight: 700; cursor: pointer; }
.header-cta span { width: 28px; height: 28px; display: grid; place-items: center; color: var(--paper); background: var(--mint-dark); }
.nav-toggle { display: none; padding: 8px; border: 0; background: transparent; }
.nav-toggle span { display: block; width: 22px; margin: 5px 0; border-top: 1px solid var(--ink); }

.screen-nav {
  position: fixed;
  z-index: 45;
  right: 18px;
  top: 50%;
  padding: 10px 0;
  display: grid;
  gap: 3px;
  transform: translateY(-50%);
}
.screen-nav::before { content: ""; position: absolute; z-index: -1; left: 13px; top: 18px; bottom: 18px; border-left: 1px solid rgba(112,115,109,.36); }
.screen-nav a { position: relative; width: 28px; height: 34px; display: grid; place-items: center; color: var(--faint); background: color-mix(in srgb, var(--page) 88%, transparent); font: 9px var(--mono); }
.screen-nav a::before { content: ""; position: absolute; left: 10px; width: 7px; height: 7px; border: 2px solid currentColor; border-radius: 50%; background: var(--page); opacity: 0; }
.screen-nav a span { transition: opacity .2s ease; }
.screen-nav a b { position: absolute; right: 36px; padding: 2px 6px; color: var(--ink); background: var(--page); font: 11px var(--sans); white-space: nowrap; opacity: 0; transform: translateX(5px); transition: opacity .2s ease, transform .2s ease; pointer-events: none; }
.screen-nav a:hover b, .screen-nav a:focus-visible b { opacity: 1; transform: translateX(0); }
.screen-nav a[aria-current="page"] { color: var(--mint-dark); }
.screen-nav a[aria-current="page"] span { opacity: 0; }
.screen-nav a[aria-current="page"]::before { opacity: 1; }

.screen { scroll-margin-top: 66px; }
.hero-inner, .film-inner, .system-inner, .closing-inner, .final-call, footer { width: min(calc(100% - 64px), 1480px); margin-inline: auto; }
.section-index, .eyebrow { color: var(--muted); font: 10px/1.4 var(--mono); letter-spacing: .08em; }

.hero-screen { min-height: calc(100vh - 66px); background: var(--page); }
.hero-inner { position: relative; min-height: calc(100vh - 66px); display: flex; align-items: center; }
.hero-intro { width: min(100%, 1120px); padding: 78px 0 110px; }
.eyebrow { margin-bottom: 38px; display: flex; align-items: center; gap: 14px; }
.eyebrow b { padding: 5px 8px; color: var(--mint-dark); background: rgba(105, 185, 162, .16); font-weight: 600; }
.hero-intro h1 { margin: 0; max-width: 1060px; font-size: clamp(64px, 7vw, 104px); font-weight: 500; line-height: 1.04; }
.hero-intro h1 em { color: var(--orange); font-style: normal; }
.hero-lead { max-width: 690px; margin: 36px 0 30px; color: #555a54; font-size: 17px; line-height: 1.8; }
.primary-action { min-height: 50px; padding: 0 20px; display: inline-flex; align-items: center; gap: 48px; border: 1px solid var(--mint-dark); font-size: 13px; font-weight: 700; }
.primary-action { color: #f4f5ef; background: var(--mint-dark); }
.primary-action:hover { background: #216a5a; }
.hero-note { margin: 15px 0 0; color: var(--faint); font-size: 11px; }
.hero-scroll { position: absolute; right: 0; bottom: 30px; display: flex; align-items: center; gap: 16px; }
.hero-scroll span { display: grid; gap: 1px; }
.hero-scroll small { color: var(--muted); font: 9px/1.4 var(--mono); letter-spacing: .08em; }
.hero-scroll b { color: var(--mint-dark); font-size: 13px; line-height: 1.5; }
.hero-scroll i { position: relative; width: 46px; border-top: 1px solid var(--mint-dark); animation: scroll-cue 1.8s ease-in-out infinite; }
.hero-scroll i::after { content: ""; position: absolute; right: 0; top: -4px; width: 7px; height: 7px; border-right: 1px solid var(--mint-dark); border-bottom: 1px solid var(--mint-dark); transform: rotate(45deg); }
@keyframes scroll-cue { 0%, 100% { transform: translateX(0); } 50% { transform: translateX(6px); } }
@media (prefers-reduced-motion: reduce) { .hero-scroll i { animation: none; } }

.film-screen { height: calc(100svh - 66px); min-height: 650px; padding: clamp(24px, 3.5vh, 42px) 0; color: var(--stage-text); background: var(--stage-deep); }
.film-split { height: 100%; display: grid; grid-template-columns: minmax(330px, .66fr) minmax(620px, 1.34fr); gap: clamp(30px, 4vw, 68px); align-items: center; }
.demo-copy { align-self: center; max-width: 430px; }
.demo-copy .section-index { margin-bottom: 30px; color: var(--stage-muted); }
.demo-copy h2 { margin: 0; font-size: clamp(36px, 3vw, 50px); font-weight: 500; line-height: 1.08; }
.demo-copy h2 em { color: var(--orange); font-style: normal; }
.demo-lead { margin: 28px 0 24px; color: #b1b5af; font-size: 14px; line-height: 1.85; }
.demo-statement { margin: 0; padding: 16px 0 16px 18px; color: var(--stage-text); border-left: 2px solid var(--orange); font-family: var(--display); font-size: 19px; line-height: 1.65; }
.demo-signals { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 8px; }
.demo-signals span { padding: 5px 8px; color: var(--mint-bright); border: 1px solid rgba(124,199,177,.32); font: 9px var(--mono); }
.demo-limit { margin: 20px 0 0; display: grid; grid-template-columns: 8px 1fr; gap: 10px; color: var(--stage-muted); font-size: 10px; }
.demo-limit i { width: 7px; height: 7px; margin-top: 5px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 0 4px rgba(105,185,162,.11); }
.demo-embed-shell { width: min(100%, calc((100svh - 180px) * 1.5)); justify-self: end; border: 1px solid #393d3a; background: #202321; box-shadow: 0 26px 70px rgba(0,0,0,.34); }
.demo-embed-bar { min-height: 42px; padding: 0 13px; display: flex; align-items: center; justify-content: space-between; gap: 18px; color: var(--stage-muted); border-bottom: 1px solid var(--stage-line); background: #1b1e1c; font-size: 9px; }
.demo-embed-bar > span { display: flex; align-items: center; gap: 8px; }
.demo-embed-bar i { width: 7px; height: 7px; border-radius: 50%; background: var(--mint); }
.demo-embed-bar b { color: var(--stage-text); font-size: 10px; }
.demo-embed-bar em { padding-left: 8px; color: #7f8580; border-left: 1px solid var(--stage-line); font-style: normal; }
.demo-embed-frame { width: 100%; aspect-ratio: 3 / 2; display: block; border: 0; background: #202321; }

.system-screen { min-height: calc(100vh - 66px); padding: 58px 0 34px; color: var(--stage-text); background: var(--stage); }
.section-head { display: grid; grid-template-columns: 160px minmax(460px, 1fr) minmax(320px, 470px); gap: 44px; align-items: end; padding-bottom: 34px; }
.system-screen .section-index { align-self: start; color: var(--stage-muted); }
.section-head h2 { margin: 0; font-size: 48px; font-weight: 500; line-height: 1.12; }
.section-head > p:last-child { margin: 0; color: #b7bbb5; font-size: 14px; }
.feature-theatre { min-height: 420px; display: grid; grid-template-columns: 360px minmax(0, 1fr); border-top: 1px solid var(--stage-line); border-bottom: 1px solid var(--stage-line); }
.feature-tabs { border-right: 1px solid var(--stage-line); }
.feature-tabs button { position: relative; width: 100%; min-height: 140px; padding: 24px 28px 22px 64px; display: grid; gap: 6px; text-align: left; border: 0; border-bottom: 1px solid var(--stage-line); background: transparent; cursor: pointer; }
.feature-tabs button:last-child { border-bottom: 0; }
.feature-tabs button:hover, .feature-tabs button[aria-selected="true"] { background: rgba(255,255,255,.045); }
.feature-tabs button:focus-visible { outline-offset: -3px; }
.feature-tabs button[aria-selected="true"]::before { content: ""; position: absolute; left: 0; top: 22px; bottom: 22px; width: 3px; background: var(--mint); }
.feature-tabs button > span { position: absolute; left: 26px; top: 28px; color: var(--gold); font: 10px var(--mono); }
.feature-tabs b { color: var(--stage-text); font-family: var(--display); font-size: 22px; font-weight: 500; }
.feature-tabs small { color: var(--stage-muted); font-size: 12px; }
.feature-viewport { position: relative; min-height: 420px; overflow: hidden; background: #222522; }
.feature-panel { position: absolute; inset: 0; }
.feature-panel[hidden] { display: none; }
.feature-panel.is-active { animation: panelIn .35s ease both; }
.feature-panel[data-panel="canvas"] img { width: 100%; height: 100%; object-fit: cover; object-position: center; filter: saturate(.75) brightness(.86); }
.canvas-focus { position: absolute; left: 22%; top: 55%; display: flex; align-items: center; gap: 12px; color: var(--paper); font-size: 11px; }
.canvas-focus i { width: 18px; height: 18px; border: 5px solid #222522; border-radius: 50%; background: var(--red); box-shadow: 0 0 0 1px var(--red); }
.canvas-focus::after { content: ""; position: absolute; z-index: -1; left: 9px; top: 9px; width: 290px; border-top: 2px solid rgba(105,185,162,.8); transform-origin: left; animation: lineGrow 1.2s ease both; }
.canvas-focus span { padding: 7px 10px; background: rgba(24,26,28,.88); }
.import-scene, .memory-scene { height: 100%; padding: 54px 7%; display: flex; align-items: center; justify-content: center; }
.import-source, .chapter-paper { width: 190px; min-height: 142px; padding: 22px; display: flex; flex-direction: column; gap: 6px; color: var(--ink); background: var(--paper); border: 1px solid var(--line); box-shadow: 0 18px 40px rgba(0,0,0,.24); }
.import-source span, .chapter-paper span { color: var(--purple); font: 10px var(--mono); }
.import-source b, .chapter-paper b { font-family: var(--display); font-size: 22px; }
.import-source small, .chapter-paper small { color: var(--muted); }
.import-wire { position: relative; width: 150px; height: 2px; background: rgba(160,139,216,.65); }
.import-wire::before, .import-wire::after { content: ""; position: absolute; top: -6px; width: 14px; height: 14px; border: 3px solid #222522; border-radius: 50%; background: var(--purple); box-shadow: 0 0 0 1px var(--purple); }
.import-wire::before { left: -7px; }
.import-wire::after { right: -7px; background: var(--mint); box-shadow: 0 0 0 1px var(--mint); }
.import-wire i { position: absolute; top: -3px; left: 0; width: 8px; height: 8px; border-radius: 50%; background: var(--gold); animation: signalTravel 1.5s linear infinite; }
.extract-sheet { width: min(390px, 46%); padding: 26px; color: var(--ink); background: var(--paper); border: 1px solid var(--line); }
.extract-sheet p { margin-bottom: 16px; color: var(--muted); font-size: 11px; }
.extract-sheet div { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.extract-sheet div span { padding: 7px 9px; color: var(--mint-dark); background: rgba(105,185,162,.14); font-size: 11px; }
.extract-sheet b { font-family: var(--display); font-size: 19px; font-weight: 500; }
.memory-scene { gap: 0; }
.chapter-paper span { color: var(--orange); }
.memory-track { width: 130px; display: flex; justify-content: space-around; border-top: 2px solid rgba(105,185,162,.65); }
.memory-track i { width: 12px; height: 12px; margin-top: -7px; border: 3px solid #222522; border-radius: 50%; background: var(--mint); box-shadow: 0 0 0 1px var(--mint); }
.memory-ledger { width: min(440px, 50%); color: var(--ink); background: var(--paper); border: 1px solid var(--line); }
.memory-ledger p { margin: 0; padding: 15px 18px; display: grid; grid-template-columns: 100px 1fr; gap: 16px; border-bottom: 1px solid var(--line); }
.memory-ledger p:last-child { border-bottom: 0; }
.memory-ledger span { color: var(--muted); font-size: 10px; }
.memory-ledger b { font-size: 12px; font-weight: 600; }
.feature-panel.is-active .memory-ledger p { animation: memoryReveal .45s ease both; }
.feature-panel.is-active .memory-ledger p:nth-child(2) { animation-delay: .14s; }
.feature-panel.is-active .memory-ledger p:nth-child(3) { animation-delay: .28s; }
.workflow-strip { margin: 22px 0 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); list-style: none; border: 1px solid var(--stage-line); }
.workflow-strip li { min-height: 66px; padding: 12px 16px; display: grid; grid-template-columns: 30px 1fr; align-content: center; border-right: 1px solid var(--stage-line); }
.workflow-strip li:last-child { border-right: 0; }
.workflow-strip span { grid-row: 1 / 3; color: var(--gold); font: 10px var(--mono); }
.workflow-strip b { font-size: 12px; font-weight: 600; }
.workflow-strip small { color: var(--stage-muted); font-size: 9px; }

.closing-screen { min-height: calc(100vh - 66px); padding-top: 58px; background: var(--paper); }
.closing-inner { display: grid; grid-template-columns: .9fr 1.1fr; gap: 76px; padding-bottom: 48px; }
.draft-copy { position: relative; padding-right: 60px; border-right: 1px solid var(--line); }
.draft-mark { position: absolute; right: 36px; top: 12px; color: var(--paper-2); font: 128px/.8 var(--display); }
.draft-copy h2, .faq-title h2, .final-call h2 { margin: 30px 0 0; font-size: 43px; font-weight: 500; line-height: 1.15; }
.draft-copy > p:nth-of-type(2) { position: relative; max-width: 650px; margin: 24px 0; color: var(--muted); font-size: 14px; }
.draft-flow { display: flex; align-items: center; gap: 10px; margin: 27px 0; }
.draft-flow span { padding: 7px 9px; color: var(--mint-dark); border: 1px solid rgba(40,121,102,.35); font-size: 10px; }
.draft-flow i { flex: 0 1 54px; border-top: 1px solid var(--mint); }
.draft-copy blockquote { margin: 36px 0 0; padding: 18px 22px; color: #4e534d; border-left: 3px solid var(--orange); background: var(--paper-2); }
.draft-copy blockquote p { margin: 0; font-family: var(--display); font-size: 17px; }
.faq-panel { min-width: 0; padding-right: 72px; display: grid; grid-template-columns: 190px 1fr; gap: 34px; }
.faq-title h2 { margin-top: 30px; font-size: 35px; }
.faq-list { border-top: 1px solid var(--ink); }
.faq-list article { border-bottom: 1px solid var(--line); }
.faq-list h3 { margin: 0; }
.faq-list button { width: 100%; padding: 15px 0; display: flex; align-items: center; justify-content: space-between; text-align: left; border: 0; background: transparent; cursor: pointer; }
.faq-list button span { font-family: var(--display); font-size: 16px; font-weight: 600; }
.faq-list button i { position: relative; width: 20px; height: 20px; }
.faq-list button i::before, .faq-list button i::after { content: ""; position: absolute; top: 10px; left: 3px; width: 14px; border-top: 1px solid var(--ink); }
.faq-list button i::after { transform: rotate(90deg); transition: transform .2s ease; }
.faq-list button[aria-expanded="true"] i::after { transform: rotate(0); }
.faq-answer { padding: 0 38px 14px 0; color: var(--muted); font-size: 12px; }
.faq-answer p { margin: 0; }
.final-call { min-height: 144px; padding: 26px 32px; display: grid; grid-template-columns: 110px minmax(430px, 1fr) 280px 280px; gap: 30px; align-items: center; color: var(--stage-text); background: var(--stage-deep); }
.final-call > p { margin: 0; color: var(--stage-muted); font: 9px var(--mono); }
.final-call h2 { margin: 0; font-size: 28px; }
.final-call > span { color: var(--stage-muted); font-size: 12px; }
.final-call a { min-height: 50px; padding: 0 16px; display: flex; align-items: center; justify-content: space-between; color: #10221d; background: var(--mint); font-size: 13px; font-weight: 700; }
.final-call a:hover { background: var(--mint-bright); }
footer { min-height: 50px; display: grid; grid-template-columns: 1fr 1fr 1fr; align-items: center; color: var(--muted); font: 9px var(--mono); }
footer span:nth-child(2) { text-align: center; }
footer span:last-child { text-align: right; }

.invite-dialog { width: min(calc(100% - 40px), 760px); max-height: calc(100vh - 48px); padding: 0; color: var(--ink); border: 1px solid var(--line-strong); border-radius: 6px; background: var(--paper); box-shadow: 0 30px 90px rgba(24, 26, 28, .32); }
.invite-dialog::backdrop { background: rgba(24, 26, 28, .66); backdrop-filter: blur(4px); }
.invite-shell { padding: 22px 28px 24px; }
.invite-head { display: flex; align-items: start; justify-content: space-between; padding-bottom: 13px; border-bottom: 1px solid var(--line); }
.invite-head .section-index { margin-bottom: 7px; }
.invite-head h2 { margin: 0; font-size: 30px; font-weight: 500; }
.invite-close { width: 36px; height: 36px; padding: 0; display: grid; place-items: center; color: var(--muted); border: 1px solid var(--line); background: transparent; font-size: 24px; line-height: 1; cursor: pointer; }
.invite-availability { min-height: 56px; margin: 12px 0; padding: 9px 14px; display: flex; align-items: baseline; gap: 7px; color: var(--mint-dark); border-left: 3px solid var(--mint); background: rgba(105, 185, 162, .12); }
.invite-availability span { margin-right: auto; color: #4f5650; font-size: 13px; }
.invite-availability strong { font-family: var(--display); font-size: 34px; font-weight: 500; line-height: 1; }
.invite-availability small { font-size: 12px; }
.invite-intro { max-width: 620px; margin: 0 0 14px; color: var(--muted); font-size: 12px; }
#inviteForm { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 16px; }
#inviteForm > label:not(.invite-consent) { display: grid; gap: 7px; }
#inviteForm label > span { font-size: 12px; font-weight: 600; }
#inviteForm label > span small { color: var(--faint); font-weight: 400; }
#inviteForm input[type="text"], #inviteForm select, #inviteForm textarea { width: 100%; min-height: 40px; padding: 8px 11px; color: var(--ink); border: 1px solid var(--line-strong); border-radius: 2px; background: #fffdf7; font: 12px/1.5 var(--sans); }
#inviteForm textarea { min-height: 72px; resize: vertical; }
#inviteForm input:focus, #inviteForm select:focus, #inviteForm textarea:focus { outline: 2px solid rgba(40, 121, 102, .3); border-color: var(--mint-dark); }
.invite-note, .invite-consent, .invite-submit, .invite-result { grid-column: 1 / -1; }
.invite-consent { display: grid; grid-template-columns: 18px 1fr; gap: 9px; align-items: start; color: var(--muted); }
.invite-consent input { margin: 4px 0 0; accent-color: var(--mint-dark); }
.invite-consent span { font-size: 10px !important; font-weight: 400 !important; }
.invite-submit { min-height: 44px; padding: 0 18px; display: flex; align-items: center; justify-content: space-between; color: #f5f5ef; border: 0; background: var(--mint-dark); font-size: 13px; font-weight: 700; cursor: pointer; }
.invite-submit:hover { background: #216a5a; }
.invite-submit:disabled { cursor: wait; opacity: .6; }
.invite-result { min-height: 20px; margin: -4px 0 0; color: var(--mint-dark); font-size: 12px; }
.invite-result.is-error { color: var(--red); }

@keyframes signalTravel { from { left: 0; } to { left: calc(100% - 7px); } }
@keyframes panelIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@keyframes lineGrow { from { transform: scaleX(0); } to { transform: scaleX(1); } }
@keyframes memoryReveal { from { opacity: 0; transform: translateX(12px); } to { opacity: 1; transform: translateX(0); } }

@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(16px); transition: opacity .55s ease, transform .55s ease; }
  .reveal.is-visible { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

@media (max-width: 1100px) {
  .site-header { grid-template-columns: 1fr auto; }
  .site-header nav, .header-cta { display: none; }
  .nav-toggle { display: block; }
  .site-header.nav-open nav { position: absolute; top: 66px; left: 0; right: 0; padding: 18px 32px; display: flex; justify-content: center; background: var(--page); border-bottom: 1px solid var(--line); }
  .hero-intro h1 { font-size: 72px; }
  .film-split { grid-template-columns: minmax(310px, .62fr) minmax(560px, 1.38fr); gap: 28px; }
  .demo-copy h2 { font-size: 39px; }
  .demo-embed-bar small { display: none; }
  .section-head { grid-template-columns: 120px 1fr; }
  .section-head > p:last-child { grid-column: 2; }
  .feature-theatre { grid-template-columns: 300px minmax(0, 1fr); }
  .closing-inner { gap: 44px; }
  .faq-panel { grid-template-columns: 1fr; gap: 20px; }
  .faq-title h2 { margin-top: 16px; }
  .final-call { grid-template-columns: 90px 1fr 240px; }
  .final-call > span { display: none; }
}

@media (max-width: 760px) {
  .hero-inner, .film-inner, .system-inner, .closing-inner, .final-call, footer { width: min(calc(100% - 36px), 1480px); }
  .site-header { padding: 0 18px; }
  .screen-nav { display: none; }
  .hero-screen, .system-screen, .closing-screen { min-height: auto; }
  .hero-intro { padding: 56px 0 100px; }
  .hero-intro h1 { font-size: 48px; }
  .hero-lead { font-size: 15px; }
  .hero-scroll { left: 0; right: auto; }
  .film-screen { height: auto; min-height: 0; }
  .film-split { grid-template-columns: 1fr; }
  .demo-copy { max-width: none; }
  .demo-embed-shell { width: 100%; justify-self: stretch; }
  .section-head { grid-template-columns: 1fr; gap: 16px; }
  .section-head > p:last-child { grid-column: auto; }
  .section-head h2 { font-size: 36px; }
  .feature-theatre { grid-template-columns: 1fr; }
  .feature-tabs { display: grid; grid-template-columns: repeat(3, 1fr); border-right: 0; border-bottom: 1px solid var(--stage-line); }
  .feature-tabs button { min-height: 106px; padding: 40px 12px 12px; border-right: 1px solid var(--stage-line); border-bottom: 0; }
  .feature-tabs button:last-child { border-right: 0; }
  .feature-tabs button > span { left: 12px; top: 12px; }
  .feature-tabs b { font-size: 15px; }
  .feature-tabs small { display: none; }
  .feature-viewport { min-height: 340px; }
  .import-scene, .memory-scene { padding: 32px 18px; }
  .import-wire, .memory-track { width: 54px; }
  .import-source, .chapter-paper { width: 140px; }
  .extract-sheet, .memory-ledger { width: calc(100% - 194px); }
  .memory-ledger p { grid-template-columns: 1fr; gap: 4px; }
  .workflow-strip { grid-template-columns: 1fr 1fr; }
  .workflow-strip li:nth-child(2) { border-right: 0; }
  .workflow-strip li:nth-child(-n+2) { border-bottom: 1px solid var(--stage-line); }
  .closing-inner { grid-template-columns: 1fr; }
  .faq-panel { padding-right: 0; }
  .draft-copy { padding-right: 0; padding-bottom: 44px; border-right: 0; border-bottom: 1px solid var(--line); }
  .draft-mark { right: 0; }
  .final-call { width: 100%; grid-template-columns: 1fr; }
  .final-call > p { display: none; }
  footer { padding: 20px 0; grid-template-columns: 1fr; gap: 8px; }
  footer span:nth-child(2), footer span:last-child { text-align: left; }
  .invite-shell { padding: 22px 20px 24px; }
  #inviteForm { grid-template-columns: 1fr; }
  .invite-note, .invite-consent, .invite-submit, .invite-result { grid-column: auto; }
}