@font-face {
    font-family: "Nari Local Sans";
    src: url("assets/fonts/Switzer-Variable.woff2") format("woff2");
    font-weight: 300 700; font-style: normal; font-display: swap;
  }
  @font-face {
    font-family: "Nari Mono";
    src: url("assets/fonts/IBMPlexMono-Regular.woff2") format("woff2");
    font-weight: 400; font-style: normal; font-display: swap;
  }
  @font-face {
    font-family: "Nari Mono";
    src: url("assets/fonts/IBMPlexMono-Medium.woff2") format("woff2");
    font-weight: 500; font-style: normal; font-display: swap;
  }

  :root {
    --dw: 400;   /* display weight — switcher controls this */
    --paper: #FFFFFF;          /* page background */
    --paper-raised: #F6F7F8;   /* boxes — pale cool gray */
    --paper-sunken: #EFF1F3;   /* inset inside boxes */
    --line-soft: #F1F3F4; --line-strong: #E6E9EB;
    --ink: #211E19;        /* titles, wordmark */
    --ink-soft: #61666E;   /* body copy — lighter, cool (5.8:1 on white) */
    --ink-faint: #8E939A;  /* labels, meta */
    /* key color */
    --sky: #BFD7FF;        /* key accent — ink on it = 11.4:1 */
    --on-key: #211E19;     /* text colour that sits on the key colour */
    --sky-pale: #DCE9FF;   /* soft fill */
    --sky-deep: #2E64B8;   /* text-safe blue — 5.8:1 on white */
    --bloom: #FFF461;      /* second accent — the flower */
    --moss: #2E6B2E;
    --radius: 22px;
    --shell: 1012px;      /* content max width */
    --gap-section: 200px; /* uniform space between sections */
    --sans: "Nari Local Sans", sans-serif;
    --pixel: "Nari Mono", ui-monospace, "SFMono-Regular", Menlo, Monaco, Consolas, monospace;
  }
  * { margin: 0; padding: 0; box-sizing: border-box; }
  *::selection { background-color: var(--bloom); color: var(--ink); }
  *::-moz-selection { background-color: var(--bloom); color: var(--ink); }
  html, body { overscroll-behavior: none; }
  body { background: var(--paper); color: var(--ink); font-family: var(--sans); font-weight: 300; line-height: 1.68; letter-spacing: 0.005em; }
  a { color: inherit; }
  :focus-visible { outline: 2px solid var(--sky-deep); outline-offset: 3px; border-radius: 2px; }
  .shell { max-width: var(--shell); margin: 0 auto; padding: 0 32px; }

  /* nav — EL grammar: logo · center links · right pills */
  /* launch banner — remove when the release is no longer news */
  .banner {
    position: relative;
    background: linear-gradient(90deg, var(--bloom) 0%, var(--bloom) 70%, var(--sky) 100%);
    color: var(--ink);
    font-family: var(--pixel); font-size: 11.5px; letter-spacing: 0.12em;
    display: flex; align-items: center; justify-content: center; gap: 10px;
    padding: 10px 44px; text-decoration: none;
  }

  .banner .arrow { opacity: 0.62; }
  .banner-close {
    position: absolute; right: 14px; top: 50%; transform: translateY(-50%);
    background: none; border: none; color: var(--on-key, var(--ink)); opacity: 0.55;
    font-size: 15px; line-height: 1; cursor: pointer; padding: 4px 6px;
  }
  .banner-close:hover { opacity: 1; }
  .banner.hidden { display: none; }

  nav { display: flex; align-items: center; gap: 34px; padding: 13px 0; }
  .wordmark { display: flex; align-items: center; gap: 9px; font-family: var(--display); font-weight: 600; font-size: 17px; text-decoration: none; flex: 1; }
  .nav-links { display: flex; gap: 26px; justify-content: center; }
  .nav-links a { font-size: 15px; font-weight: 400; color: var(--ink); text-decoration: none; transition: opacity 0.2s ease; }
  .nav-links:hover a { opacity: 0.4; }
  .nav-links a:hover { opacity: 1; }
  .nav-pills { display: flex; gap: 10px; flex: 1; justify-content: flex-end; }
  .pill { font-family: var(--sans); font-weight: 500; font-size: 0.875rem; padding: 12px 24px; border-radius: 999px; text-decoration: none; cursor: pointer; }
  .pill.lg { font-size: 1rem; padding: 15px 32px; }
  .pill.solid { background: var(--ink); color: var(--paper); }
  .pill.solid:hover { background: #3B362C; }
  .pill.outline { background: transparent; border: 1px solid var(--line-strong); }
  .pill.outline:hover { border-color: var(--ink-soft); }
  .pill.sm { font-size: 0.875rem; padding: 8px 17px; }

  /* Y Combinator badge — light mode lockup */
  .yc {
    display: inline-flex; align-items: center; gap: 8px;
    font-family: var(--sans); font-weight: 400; font-size: 14.5px;
    color: var(--ink-soft); text-decoration: none; margin-bottom: 8px;
  }
  .yc .yc-mark {
    display: inline-flex; align-items: center; justify-content: center;
    width: 21px; height: 21px; border-radius: 3px;
    background: #FF6600; color: #FFFFFF;
    font-family: var(--display); font-weight: 500; font-size: 14px; line-height: 1;
  }
  .yc .yc-name { color: #C24A00; }   /* darkened YC orange — 4.9:1 on white */
  .yc:hover .yc-name { color: #FF6600; }

  /* hero — left headline, right paragraph */
  .hero { display: grid; grid-template-columns: 1.15fr 1fr; gap: 56px; align-items: center; padding: 72px 0 8px; }
  .hero h1 {
    font-family: var(--display); font-weight: var(--dw);
    font-size: clamp(32px, 4.4vw, 60px); line-height: 1.05; letter-spacing: -0.012em; text-wrap: balance;
  }
  .hero .lede { font-size: 17.5px; color: var(--ink-soft); margin: 0; text-wrap: pretty; }
  .hero .lede b { color: var(--ink); font-weight: 500; }

  /* segmented switcher + demo panel */

  @keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.35; } }

  .demo-panel {
    background: var(--paper-raised); border: 1px solid var(--line-soft);
    border-radius: var(--radius); margin-top: 40px; padding: 34px 32px;
    text-align: center; position: relative;
  }
  .callframe {
    position: relative; width: min(512px, 74vw); height: min(512px, 74vw); flex: 0 0 auto; aspect-ratio: 1/1;
    background: var(--paper-sunken); border: 1px solid var(--line-strong);
    border-radius: var(--radius); overflow: hidden;
    box-shadow: 0 12px 40px rgba(33,30,25,0.12);
  }
  .selfview {
    position: absolute; right: 14px; bottom: 14px; width: 101px; height: 101px; aspect-ratio: 1;
    background: rgba(255,255,255,0.48); border: 1px solid rgba(255,255,255,0.5); border-radius: 18px;
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 9px;
    font-family: var(--sans); font-size: 0.875rem; line-height: 1.2; font-weight: 500; color: var(--ink);
    box-shadow: 0 12px 30px rgba(33,30,25,0.18); cursor: pointer; z-index: 3;
    backdrop-filter: blur(28px) saturate(1.08); -webkit-backdrop-filter: blur(28px) saturate(1.08);
    overflow: hidden;
    transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
  }
  .selfview:hover { background: rgba(255,255,255,0.7); transform: translateY(-2px); box-shadow: 0 16px 34px rgba(33,30,25,0.18); }
  .cam-icon {
    display: grid; place-items: center; color: var(--ink);
  }
  .camera-on-icon { display: none; }
  .cam-toggle[aria-pressed="true"] .camera-off-icon { display: none; }
  .cam-toggle[aria-pressed="true"] .camera-on-icon { display: block; }
  .user-cam-preview { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; pointer-events: none; transition: opacity 0.2s ease; }
  .cam-toggle.is-on .user-cam-preview { opacity: 1; }
  .cam-toggle.is-on .cam-icon, .cam-toggle.is-on .cam-label { opacity: 0; }
  .cam-label { text-align: center; }
  .audio-on-icon { display: none; }
  .audio-toggle[aria-pressed="true"] .audio-off-icon { display: none; }
  .audio-toggle[aria-pressed="true"] .audio-on-icon { display: block; }
  .captions {
    position: absolute; left: 0; right: 0; bottom: 0; padding: 24px 132px 12px 16px;
    background: linear-gradient(transparent, rgba(239,241,243,0.94));
    font-family: var(--sans); font-style: italic; font-size: 14.5px; color: var(--ink-soft);
    text-align: left;
  }
  .demo-label {
    position: absolute; top: 18px; right: 20px; left: auto;
    display: inline-flex; align-items: center; gap: 7px;
    transition: left 0.25s ease, right 0.25s ease;
    font-family: var(--pixel); font-size: 11px; letter-spacing: 0.12em;
    color: var(--ink-faint); text-decoration: none;
  }
  .demo-label:hover { color: var(--ink-soft); }

  /* call row: frame + avatar picker */
  /* 3-column grid so the frame sits at true center; picker floats to its right */
  .callrow {
    display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: center; width: 100%;
  }
  .callframe { grid-column: 2; }
  .avatar-pick {
    grid-column: 3; justify-self: start;
    display: flex; flex-direction: column; gap: 10px; margin-left: 20px;
  }
  .apick {
    width: 54px; height: 54px; border-radius: 50%; padding: 0; cursor: pointer;
    background: var(--paper); border: 1px solid var(--line-strong);
    position: relative; overflow: hidden; transition: box-shadow 0.2s, border-color 0.2s;
  }
  .apick:hover { border-color: var(--ink-soft); }
  .apick.on { border: 2px solid var(--bloom); box-shadow: none; }
  .apick .mini {
    position: absolute; inset: 0; border-radius: 50%;
    background-size: cover; background-position: center 18%;
    transition: inset 0.2s ease;
  }
  .apick.on .mini { inset: 0; }
  .apick .mini.f { background-image: url("assets/avatars/avery-speaking-first-frame.png"); }
  .apick .mini.m { background-image: url("assets/avatars/male.jpg"); }
  /* locked while a call is running */




  /* expanded demo — the panel takes over the screen */
  .demo-panel.expanded {
    position: fixed; inset: 0; z-index: 80; margin: 0; border: none; border-radius: 0;
    background: var(--paper-raised);
    --expanded-call-size: min(70vh, 92vw, calc(100vh - 168px));
    --expanded-bar-size: min(56vh, 73.6vw, calc(80vh - 134.4px));
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px;
    width: 100%; height: 100vh; overflow: hidden;
    padding: 24px;
  }
  .demo-panel.expanded .callframe { width: var(--expanded-call-size); height: var(--expanded-call-size); }
  .demo-panel.expanded .callrow {
    order: 2; flex: 1 1 auto; min-height: 0; width: 100%;
    display: flex; align-items: center; justify-content: center;
  }
  .demo-panel.expanded .callbar { order: 3; flex: 0 0 auto; width: var(--expanded-bar-size); margin: 0 0 4px; }
  .call-top-status { display: none; }
  .demo-panel.expanded .call-top-status {
    order: 1; flex: 0 0 14px; display: grid; place-items: center; align-self: center; min-height: 14px;
  }
  .call-timer, .status-chip {
    grid-area: 1 / 1;
    font: 500 0.875rem/1 var(--pixel); letter-spacing: 0.12em; color: var(--ink-soft);
    white-space: nowrap; transition: opacity 0.2s ease, visibility 0.2s ease;
  }
  .call-timer { font-variant-numeric: tabular-nums; opacity: 0; visibility: hidden; }
  .demo-panel.expanded.timer-running .call-timer { opacity: 1; visibility: visible; }
  .status-chip { opacity: 1; visibility: visible; }
  .status-chip.live { opacity: 0; visibility: hidden; }
  .demo-panel.expanded .captions { display: none; }
  .demo-panel.expanded .demo-label { display: none; }
  .demo-panel.expanded .avatar-pick { display: none; }
  .demo-close {
    position: absolute; top: 18px; right: 20px; z-index: 3;
    width: 48px; height: 48px; padding: 0 15px; border-radius: 999px;
    background: var(--clay, #B3372B); color: #FFFFFF; border: 0; cursor: pointer;
    display: none; align-items: center; justify-content: center; gap: 0;
    box-shadow: 0 8px 24px rgba(179,55,43,0.28); overflow: hidden;
    transition: width 0.28s cubic-bezier(0.22,1,0.36,1), gap 0.28s ease, background 0.2s ease, box-shadow 0.2s ease;
  }
  .demo-close:hover, .demo-close:focus-visible { width: 126px; gap: 9px; background: #98301F; box-shadow: 0 10px 28px rgba(152,48,31,0.34); }
  .demo-close-label {
    max-width: 0; opacity: 0; overflow: hidden; white-space: nowrap;
    font: 500 0.875rem/1 var(--sans); transition: max-width 0.28s ease, opacity 0.18s ease;
  }
  .demo-close:hover .demo-close-label, .demo-close:focus-visible .demo-close-label { max-width: 64px; opacity: 1; }
  .demo-panel.expanded .demo-close { display: flex; }
  .dev-layer {
    position: absolute; bottom: 18px; left: 20px; z-index: 10; width: 248px;
    display: none; flex-direction: column; gap: 10px; padding: 12px;
    background: rgba(33,30,25,0.92); color: #FFFFFF; border-radius: 16px;
    box-shadow: 0 12px 34px rgba(33,30,25,0.26); backdrop-filter: blur(16px);
  }
  body.dev-mode .demo-panel.expanded .dev-layer { display: flex; }
  .dev-layer-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
  .dev-layer-title { font-family: var(--pixel); font-size: 9px; letter-spacing: 0.12em; opacity: 0.58; }
  .dev-toggle {
    display: flex; align-items: center; gap: 7px; padding: 0; border: 0;
    background: transparent; color: #FFFFFF; cursor: pointer;
  }
  .dev-toggle-track { width: 34px; height: 20px; padding: 2px; border-radius: 999px; background: var(--sky-deep); transition: background 0.2s ease; }
  .dev-toggle-knob { display: block; width: 16px; height: 16px; border-radius: 50%; background: #FFFFFF; transform: translateX(14px); transition: transform 0.2s ease; }
  .dev-toggle-text { min-width: 18px; text-align: left; font: 500 10px/1 var(--sans); }
  .dev-layer.is-off .dev-toggle-track { background: #57534A; }
  .dev-layer.is-off .dev-toggle-knob { transform: translateX(0); }
  .dev-state-controls { display: flex; gap: 6px; transition: opacity 0.2s ease; }
  .dev-layer.is-off .dev-state-controls,
  .dev-layer.is-off .dev-noise-controls { opacity: 0.3; pointer-events: none; }
  .dev-state-button {
    flex: 1;
    border: 0; border-radius: 8px; padding: 7px 10px; cursor: pointer;
    background: transparent; color: rgba(255,255,255,0.62);
    font: 500 11px/1 var(--sans);
  }
  .dev-state-button:hover { color: #FFFFFF; }
  .dev-state-button[aria-pressed="true"] { background: #FFFFFF; color: var(--ink); }
  .dev-noise-controls {
    display: grid; gap: 10px; padding-top: 10px; border-top: 1px solid rgba(255,255,255,0.14);
    transition: opacity 0.2s ease;
  }
  .dev-range { display: grid; gap: 5px; }
  .dev-range > span {
    display: flex; justify-content: space-between; gap: 12px;
    font: 500 10px/1.2 var(--sans); color: rgba(255,255,255,0.68);
  }
  .dev-range output { color: #FFFFFF; font-family: var(--pixel); font-size: 9px; }
  .dev-range input { width: 100%; margin: 0; accent-color: var(--bloom); cursor: pointer; }
  .dev-preview-button {
    width: 100%; border: 0; border-radius: 8px; padding: 9px 10px; cursor: pointer;
    background: var(--bloom); color: var(--ink); font: 500 11px/1 var(--sans);
  }
  .dev-preview-button:hover { background: #FFE977; }
  body.demo-open { overflow: hidden; }

  /* pre-call (idle) state — only the start button shows */
  .startbtn {
    position: absolute; left: 14px; right: 14px; bottom: 14px;
    display: flex; align-items: center; justify-content: center; gap: 9px;
    font-family: var(--sans); font-weight: 500; font-size: 1rem;
    background: rgba(255,255,255,0.78); color: var(--ink);
    padding: 13px 24px; border-radius: 999px; border: none; cursor: pointer;
    box-shadow: 0 6px 22px rgba(33,30,25,0.2); white-space: nowrap; z-index: 2;
  }
  .startbtn:hover { background: rgba(255,255,255,0.9); }
  .startbtn:disabled { background: rgba(255,255,255,0.78); color: var(--ink-faint); cursor: not-allowed; box-shadow: 0 6px 18px rgba(33,30,25,0.12); }
  /* blurred gradient scrim under the start button */
  .frame-scrim {
    position: absolute; left: 0; right: 0; bottom: 0; height: 28%;
    background: linear-gradient(to top, rgba(33,30,25,0.32), rgba(33,30,25,0));
    -webkit-mask-image: linear-gradient(to top, #000 42%, transparent);
    mask-image: linear-gradient(to top, #000 42%, transparent);
    pointer-events: none; z-index: 1;
  }
  .demo-panel:not(.idle) .frame-scrim { display: none; }
  .demo-panel.idle .status-chip,
  .demo-panel.idle .selfview,
  .demo-panel.idle .audio-toggle,
  .demo-panel.idle .captions,
  .demo-panel.idle .callbar { display: none; }
  .demo-panel.idle .figure { opacity: 1; }
  .demo-panel:not(.idle) .startbtn { display: none; }

  @media (max-width: 640px) {
    .callframe {
      width: min(512px, calc(100vw - 118px));
      height: min(512px, calc(100vw - 118px));
    }
    .avatar-pick { gap: 8px; margin-left: 8px; }
    .apick { width: 44px; height: 44px; }
    .selfview { width: 86px; height: 86px; border-radius: 15px; gap: 6px; }
  }

  .callbar {
    display: flex; align-items: center; justify-content: center; gap: 12px;
    width: min(409.6px, 59.2vw); margin-top: 22px;
  }
  .callbtn {
    flex: 0 0 auto; width: 52px; height: 52px; border-radius: 50%; border: 1px solid var(--line-strong);
    background: var(--paper); cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 8px 24px rgba(33,30,25,0.1);
  }
  .callbtn:hover { background: var(--paper-sunken); }
  .mic-on-icon { display: none; }
  .mic-toggle[aria-pressed="true"] .mic-on-icon { display: block; }
  .mic-toggle[aria-pressed="true"] .mic-off-icon { display: none; }
  .message-entry {
    flex: 1; min-width: 0; height: 52px; display: flex; align-items: center;
    background: var(--paper); border: 1px solid var(--line-strong); border-radius: 999px;
    padding: 4px 5px 4px 18px; box-shadow: 0 8px 24px rgba(33,30,25,0.1);
  }
  .message-entry input {
    flex: 1; width: 0; min-width: 0; border: 0; outline: 0; background: transparent;
    font: 400 15px/1.4 var(--sans); color: var(--ink);
  }
  .message-entry input::placeholder { color: var(--ink-faint); }
  .message-send {
    flex: 0 0 auto; width: 42px; height: 42px; border: 0; border-radius: 50%;
    display: grid; place-items: center; background: var(--ink); color: var(--paper); cursor: pointer;
  }
  .message-send:hover { background: #3B362C; }
  .message-send svg { transform: rotate(-45deg); }
  .selfview, .callbtn, .message-entry { transition: opacity 0.24s ease, filter 0.24s ease; }
  .demo-panel.controls-disabled .selfview,
  .demo-panel.controls-disabled .callbtn,
  .demo-panel.controls-disabled .message-entry { opacity: 0.34; filter: saturate(0.35); }
  .demo-panel.controls-disabled .selfview,
  .demo-panel.controls-disabled .callbar { pointer-events: none; }
  .demo-panel.controls-disabled .message-entry {
    background: var(--paper-sunken); border-color: var(--line-strong); box-shadow: none;
  }
  .demo-panel.controls-disabled .message-send {
    background: var(--paper); color: var(--ink); border: 1px solid var(--line-strong);
  }
  .demo-panel.controls-disabled .connecting .selfview { opacity: 0.5; }
  .demo-panel.controls-disabled .message-entry input,
  .demo-panel.controls-disabled .message-entry input::placeholder { color: var(--ink-faint); }
  .daily-limit-note {
    margin: 18px auto 0; color: var(--ink-soft); font-size: 1rem; line-height: 1.5; text-align: center;
  }
  .daily-limit-note a { color: var(--ink); font-weight: 500; text-underline-offset: 3px; }
  .demo-panel.expanded .daily-limit-note { display: none; }

  .figure {
    position: absolute; inset: 0;
    background-size: cover; background-position: center 30%;
    transition: opacity 0.5s ease, filter 0.7s ease;
  }
  .figure.female { background-image: url("assets/avatars/avery-speaking-first-frame.png"); }
  .figure.male   { background-image: url("assets/avatars/male.jpg"); }
  .figure .fig-video { width: 100%; height: 100%; object-fit: cover; object-position: center; display: none; opacity: 1; transition: opacity 0.32s ease; }
  .figure .talking-anchor {
    position: absolute; inset: 0; width: 100%; height: 100%;
    display: none; object-fit: cover; object-position: center;
  }
  .figure.female .fig-video { display: block; }
  .live .figure.female .fig-video { display: none; }
  .live .figure.female .talking-anchor { display: block; }
  .figure.female, .figure.male { animation: none; }
  .connecting .figure { opacity: 1; }
  .connecting .figure .fig-video { opacity: 0; }
  .loading-state-frame {
    position: absolute; inset: 0; z-index: 2; width: 100%; height: 100%;
    overflow: hidden; background: #171612; opacity: 0; pointer-events: none;
    --noise-grain-a: 12px;
    --noise-grain-b: 19px;
    --noise-strength-mid: 0.42;
    --noise-strength-peak: 0.62;
    --noise-strength-tail: 0.27;
    --noise-duration: 600ms;
  }
  .connecting .loading-state-frame { opacity: 1; }
  .loading-clean-frame,
  .loading-dither-video,
  .loading-dither-frames,
  .loading-dither-frames img {
    position: absolute; inset: 0; width: 100%; height: 100%;
  }
  .loading-clean-frame,
  .loading-dither-video,
  .loading-dither-frames img { display: block; object-fit: cover; object-position: center; }
  .loading-clean-frame { z-index: 0; }
  .loading-dither-video { z-index: 1; }
  .loading-state-frame::after {
    content: "";
    position: absolute; inset: 0; z-index: 2; pointer-events: none; opacity: 0;
    background-image:
      radial-gradient(circle, rgba(23,22,18,0.9) 0 0.7px, transparent 1px),
      radial-gradient(circle, rgba(23,22,18,0.72) 0 0.8px, transparent 1.1px);
    background-position: 0 0, 3px 5px;
    background-size: var(--noise-grain-a) var(--noise-grain-a), var(--noise-grain-b) var(--noise-grain-b);
    mix-blend-mode: normal;
  }
  .loading-state-frame.is-finished .loading-dither-video {
    animation: loading-video-dissolve var(--noise-duration) steps(8, end) forwards;
  }
  .loading-state-frame.is-finished::after {
    animation: loading-noise-burst var(--noise-duration) steps(8, end) forwards;
  }
  @keyframes loading-video-dissolve {
    0%   { opacity: 1; }
    45%  { opacity: 0.72; }
    75%  { opacity: 0.32; }
    100% { opacity: 0; visibility: hidden; }
  }
  @keyframes loading-noise-burst {
    0%   { opacity: 0; background-position: 0 0, 3px 5px; }
    25%  { opacity: var(--noise-strength-mid); background-position: 5px -3px, -4px 2px; }
    55%  { opacity: var(--noise-strength-peak); background-position: -3px 6px, 7px -5px; }
    80%  { opacity: var(--noise-strength-tail); background-position: 6px 2px, -2px -6px; }
    100% { opacity: 0; background-position: -5px -4px, 4px 7px; }
  }
  .loading-dither-frames { z-index: 1; display: none; }
  .loading-state-frame.is-male .loading-clean-frame,
  .loading-state-frame.is-male .loading-dither-video { display: none; }
  .loading-state-frame.is-male .loading-dither-frames { display: block; }
  .loading-dither-frames img {
    opacity: 0; image-rendering: pixelated;
    animation: dither-cycle 1.8s steps(1, end) infinite;
  }
  .loading-dither-frames img:nth-child(2) { animation-delay: -.6s; }
  .loading-dither-frames img:nth-child(3) { animation-delay: -1.2s; }
  @keyframes dither-cycle {
    0%, 32% { opacity: 1; }
    33%, 100% { opacity: 0; }
  }

  /* sections below */
  section.block { padding: var(--gap-section) 0 0; }
  .eyebrow { font-family: var(--pixel); font-size: 12px; letter-spacing: 0.14em; color: var(--ink-faint); text-transform: uppercase; margin-bottom: 12px; }
  .block h2 { font-family: var(--display); font-weight: 400; font-size: clamp(26px, 3.4vw, 38px); letter-spacing: -0.012em; margin-bottom: 24px; }


  /* --- models: scrolling copy controls one shared sticky media stage --- */
  .sc-card {
    border: 0; border-radius: 28px; padding: 28px;
    background: var(--paper);
  }
  .sc-frame {
    position: relative; aspect-ratio: 1/1; width: min(360px, 100%); margin: 0 auto;
    border-radius: var(--radius); overflow: hidden;
    background: var(--paper-sunken); isolation: isolate; contain: layout paint;
  }
  .mslide { position: absolute; inset: 0; display: none; background-size: cover; background-position: center; }
  .mslide.is-on { display: block; }
  .mslide video { width: 100%; height: 100%; object-fit: cover; }
  /* Dia — two speakers, split view */
  .mslide.player { background: var(--paper-sunken); padding: 0; }
  .duo { position: absolute; inset: 0; display: flex; flex-direction: column; }
  .duo-half {
    flex: 1; display: flex; align-items: center; justify-content: center; gap: 14px;
    transition: background 0.3s ease, opacity 0.3s ease;
  }
  .duo-half.a { background: var(--sky-pale); }
  .duo-half.b { background: var(--sky); }
  .duo-half:not(.is-speaking) { opacity: 0.45; }
  .mslide.player:not(.is-playing) .duo-half { opacity: 0.72; }
  .duo-bars { display: flex; align-items: flex-end; gap: 5px; height: 42px; }
  .duo-bars span { width: 5px; height: 100%; border-radius: 3px; background: var(--sky-deep); transform: scaleY(0.16); transform-origin: bottom; transition: transform 70ms linear; }
  .dia-play {
    position: absolute; top: 50%; left: 50%; z-index: 3; width: 64px; height: 64px;
    display: grid; place-items: center; padding: 0; border: 1px solid rgba(33,30,25,0.08); border-radius: 50%;
    background: rgba(255,255,255,0.92); color: var(--ink); cursor: pointer; transform: translate(-50%, -50%);
    box-shadow: 0 10px 28px rgba(33,30,25,0.16); transition: opacity 0.2s ease, transform 0.2s ease, background 0.2s ease;
  }
  .dia-play:hover { background: #FFFFFF; transform: translate(-50%, -50%) scale(1.04); }
  .player.is-playing .dia-play { opacity: 0; pointer-events: none; }
  .player.is-playing:hover .dia-play,
  .player.is-playing .dia-play:focus-visible { opacity: 1; pointer-events: auto; }
  .dia-pause-icon { display: none; }
  .player.is-playing .dia-play-icon { display: none; }
  .player.is-playing .dia-pause-icon { display: block; }
  @media (prefers-reduced-motion: reduce) { .duo-bars span { transition: none; } }

  /* emotion timeline */
  .pl-track { position: relative; padding-top: 14px; }
  .pl-ruler { height: 12px; background-image: repeating-linear-gradient(to right, var(--line-strong) 0 1px, transparent 1px 7px); }
  .pl-segs { display: flex; gap: 5px; margin-top: 10px; }
  .seg {
    font-family: var(--sans); font-size: 0.875rem; color: var(--ink-soft);
    background: var(--paper); border-radius: 8px; padding: 7px 10px; text-align: left;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    border: 1px solid var(--line-soft); cursor: pointer; transition: background 0.2s ease, color 0.2s ease;
  }
  .seg.on { background: var(--ink); color: var(--paper); border-color: var(--ink); }
  .pl-head {
    position: absolute; top: 14px; bottom: 0; left: 0; z-index: 2; width: 2px;
    background: #B3372B; opacity: 0; pointer-events: none;
  }
  .pl-head::before { content: ""; position: absolute; top: -4px; left: 50%; width: 10px; height: 10px; border-radius: 50%; background: #B3372B; transform: translateX(-50%); }
  .pl-scrubber {
    position: absolute; top: 4px; left: -9px; z-index: 3; width: calc(100% + 18px); height: 32px;
    margin: 0; appearance: none; -webkit-appearance: none; background: transparent; cursor: ew-resize;
  }
  .pl-scrubber::-webkit-slider-runnable-track { height: 32px; background: transparent; }
  .pl-scrubber::-webkit-slider-thumb { width: 18px; height: 32px; appearance: none; -webkit-appearance: none; background: transparent; }
  .pl-scrubber::-moz-range-track { height: 32px; background: transparent; border: 0; }
  .pl-scrubber::-moz-range-thumb { width: 18px; height: 32px; border: 0; background: transparent; }
  #emoTrack .pl-head { opacity: 1; }
  #emoTrack { display: none; }
  #emoTrack.show { display: block; }

  .sc-head { display: grid; grid-template-columns: 1fr; gap: 6px; align-items: start; margin-bottom: 80px; }
  .sc-head h2 { font-family: var(--display); font-weight: var(--dw); font-size: clamp(28px, 3.4vw, 42px); line-height: 1.1; letter-spacing: -0.012em; margin-bottom: 0; }
  .sc-lede { color: var(--ink-soft); font-size: 1rem; margin: 0; text-wrap: pretty; }
  .steps { margin-top: 0; }
  .step {
    display: block;
    padding: 0 0 64px;
    min-height: 52vh; padding-block: 0 64px;
  }
  .st-title {
    display: flex; align-items: center; gap: 11px;
    font-family: var(--display); font-weight: 500; font-size: 34px; letter-spacing: -0.01em; line-height: 1.1;
    color: var(--ink-faint); transition: color 0.3s ease;
  }
  .st-title > svg { flex: 0 0 auto; width: 30px; height: 30px; }
  .step.is-active .st-title { color: var(--ink); }
  .st-body { opacity: 0.55; margin-top: 30px; transition: opacity 0.35s ease; }
  .step.is-active .st-body { opacity: 1; }
  .st-cat { font-family: var(--pixel); font-size: 0.875rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--sky-deep); line-height: 1.2; margin-bottom: 12px; }
  .st-body p { color: var(--ink-soft); font-size: 1rem; }
  .model-stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 24px; }
  .model-stat { display: grid; gap: 2px; }
  .model-stat-value {
    font-family: var(--pixel); font-size: 30px; font-weight: 400;
    line-height: 1.05; letter-spacing: -0.01em; color: var(--ink);
  }
  .model-stat-label {
    font-family: var(--pixel); font-size: 12px; font-weight: 400;
    line-height: 1.3; letter-spacing: 0.12em; color: var(--ink-faint);
  }
  .model-links { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 20px; }
  .model-link {
    display: inline-flex; align-items: center; gap: 2px; padding: 0 2px; margin: 0 -2px; border: 0;
    background: transparent; color: var(--ink); cursor: pointer; text-decoration: none;
    font: 500 0.875rem/1.3 var(--sans); transition: background-color 0.18s ease, color 0.18s ease;
  }
  .model-link:hover, .model-link:focus-visible { background-color: var(--bloom); color: var(--ink); }

  .models-list {
    display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(340px, 1fr);
    gap: 72px; align-items: start;
  }
  .model-steps { min-width: 0; }
  .model-steps .step {
    min-height: max(430px, 54vh); padding: 0;
    display: flex; flex-direction: column; justify-content: flex-start;
  }
  .models-stage {
    position: sticky; top: max(32px, calc((100vh - 430px) / 2));
    height: 430px; align-self: start; min-width: 0;
  }
  .models-stage .sc-card { position: relative; width: 100%; height: 100%; }
  .model-media {
    position: absolute; inset: 0; visibility: hidden; opacity: 0; pointer-events: none;
    transition: opacity 0.24s ease, visibility 0s linear 0.24s;
  }
  .model-media.is-on { visibility: visible; opacity: 1; pointer-events: auto; transition-delay: 0s; }
  .model-media .mslide { display: block; }

  @media (max-width: 860px) {
    /* layout collapses to single column */
    .hero { grid-template-columns: 1fr; gap: 18px; padding-top: 40px; }
    .sc-head { grid-template-columns: 1fr; gap: 6px; margin-bottom: 48px; }
    .models-list { display: flex; flex-direction: column; gap: 32px; }
    .model-steps { display: flex; flex-direction: column; gap: 72px; }
    .model-steps .step { min-height: 0; padding: 0; }
    .model-steps .st-title { color: var(--ink); }
    .model-steps .st-body { opacity: 1; }
    .models-stage { position: relative; top: auto; height: auto; min-height: 430px; }
    .models-stage .sc-card { min-height: 430px; }
    .step { min-height: 0; grid-template-columns: 1fr; gap: 12px; padding: 24px 0; }
    .step .st-left, .step .st-body { grid-column: 1; }
    .step .st-body { opacity: 1; }
    .posts { grid-template-columns: 1fr; }
    /* nav: hide center links, keep logo + one CTA */
    .nav-links { display: none; }
    /* banner: let it breathe / wrap instead of colliding with close */
    .banner { padding: 10px 40px; font-size: 10.5px; }
    .banner .arrow { display: none; }
  }

  .badge-new {
    font-family: var(--pixel); font-size: 11px; letter-spacing: 0.12em;
    background: var(--bloom); color: var(--ink);
    padding: 5px 11px; border-radius: 999px;
  }

  /* --- latest updates --- */
  .up-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 28px; }
  .up-head h2 { font-family: var(--display); font-weight: var(--dw); font-size: clamp(28px, 3.4vw, 42px); letter-spacing: -0.012em; }
  .posts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
  .post { text-decoration: none; display: block; }
  .post .thumb {
    position: relative; aspect-ratio: 1/1; border-radius: var(--radius); overflow: hidden;
    border: 1px solid var(--line-soft);
    background: #FFFFFF;
    display: flex; align-items: center; justify-content: center;
  }
  .post .post-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
  .post .mark { position: relative; z-index: 1; width: 34%; display: flex; }
  .post .mark svg { width: 100%; height: auto; }
  .post h3 { font-family: var(--display); font-size: 1.25rem; font-weight: 400; color: var(--ink); margin-top: 14px; line-height: 1.4; text-wrap: pretty; }
  .post h3 span {
    padding: 0 2px; margin-left: -2px;
    box-decoration-break: clone; -webkit-box-decoration-break: clone;
    transition: background-color 0.18s ease;
  }
  .post .meta { font-family: var(--pixel); font-size: 0.875rem; letter-spacing: 0.1em; color: var(--ink-faint); margin-top: 8px; text-transform: uppercase; }
  .post:hover h3 span, .post:focus-visible h3 span { background-color: var(--bloom); }

  .contact-c { text-align: center; }


  .contact-c h2 { font-family: var(--display); font-weight: var(--dw); font-size: clamp(28px, 3.4vw, 42px); line-height: 1.1; letter-spacing: -0.012em; }
  .contact-c p { color: var(--ink-soft); font-size: 16.5px; margin: 14px auto 0; max-width: 34em; }
  .contact-c .ctas { display: flex; justify-content: center; gap: 12px; margin-top: 30px; flex-wrap: wrap; }


  /* contact bottom sheet */
  .sheet-back {
    position: fixed; inset: 0; z-index: 95; display: none;
    background: rgba(33,30,25,0.34); pointer-events: none;
  }
  .sheet-back.open {
    display: block; pointer-events: auto;
    backdrop-filter: blur(3px); -webkit-backdrop-filter: blur(3px);
    animation: sheet-back-in 0.22s ease both;
  }
  .sheet {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 96; display: none;
    background: #EDF0F2; border-radius: 28px 28px 0 0;
    box-shadow: 0 -20px 60px rgba(33,30,25,0.22);
    max-height: 98vh; overflow-y: auto;
  }
  .sheet-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; pointer-events: none; }
  .sheet.open { display: block; animation: sheet-in 0.36s cubic-bezier(0.22,1,0.36,1) both; }
  @keyframes sheet-back-in { from { opacity: 0; } to { opacity: 1; } }
  @keyframes sheet-in { from { transform: translateY(100%); } to { transform: translateY(0); } }
  .sheet-split { position: relative; z-index: 1; display: grid; grid-template-columns: 3fr 5fr; min-height: 96vh; }
  .sheet-aside {
    position: relative; display: flex; align-items: center; padding: 56px 5vw;
    background: var(--paper); border-right: 1px solid var(--line-soft);
  }
  .sheet-aside-in { position: relative; z-index: 1; max-width: 22em; }
  .s-eyebrow { font-family: var(--pixel); font-size: 12px; letter-spacing: 0.14em; color: var(--sky-deep); text-transform: uppercase; }
  .sheet-aside h2 { font-family: var(--display); font-weight: var(--dw); font-size: clamp(38px, 4.2vw, 58px); letter-spacing: -0.015em; line-height: 1.02; margin-top: 12px; text-shadow: 0 1px 16px rgba(255,255,255,0.7); }
  .s-intro { color: var(--ink-soft); font-size: 16.5px; margin-top: 14px; text-shadow: 0 1px 16px rgba(255,255,255,0.7); }
  .sheet-form { display: flex; align-items: center; padding: 44px 4vw 52px; overflow-y: auto; }
  .sheet-card {
    background: var(--paper); border: 1px solid rgba(255,255,255,0.7);
    border-radius: 24px; padding: 32px 38px; width: 100%; max-width: 560px; margin: 0 auto;
    box-shadow: 0 26px 70px rgba(33,30,25,0.18);
  }
  .sheet-card form { margin-top: 0; }
  .sheet-form h2 { display: none; }
  .sheet-x { position: absolute; top: 20px; right: 24px; z-index: 2; width: 48px; height: 48px; border-radius: 50%; background: var(--paper-raised); border: 1px solid var(--line-soft); cursor: pointer; display: flex; align-items: center; justify-content: center; }
  .sheet-x:hover { background: var(--paper-sunken); }
  body.sheet-open { overflow: hidden; }

  .sheet-form-h { font-family: var(--display); font-weight: var(--dw); font-size: 26px; letter-spacing: -0.008em; }
  .sheet form { margin-top: 0; }
  .frow { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
  .field { margin-bottom: 14px; }
  .field.full { grid-column: 1 / -1; }
  .sheet label { display: block; font-size: 14px; font-weight: 400; color: var(--ink); margin-bottom: 6px; }
  .sheet label .opt { color: var(--ink-faint); font-weight: 300; }
  .control { width: 100%; font-family: var(--sans); font-weight: 300; font-size: 15.5px; color: var(--ink); background: var(--paper); border: 1px solid var(--line-strong); border-radius: 14px; padding: 13px 16px; transition: border-color 0.2s ease, box-shadow 0.2s ease; }
  .control::placeholder { color: var(--ink-faint); }
  .control:hover { border-color: var(--ink-faint); }
  .control:focus { outline: none; border-color: var(--sky-deep); box-shadow: 0 0 0 3px var(--sky-pale); }
  textarea.control { min-height: 92px; resize: vertical; line-height: 1.6; }
  select.control { appearance: none; -webkit-appearance: none; cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%238E939A' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 16px center; padding-right: 44px; }
  .sheet .marketing-consent { display: flex; align-items: flex-start; gap: 12px; color: var(--ink-soft); cursor: pointer; }
  .sheet .marketing-consent input { flex: 0 0 auto; width: 18px; height: 18px; margin-top: 3px; accent-color: var(--ink); cursor: pointer; }
  .sheet .marketing-consent span { font-size: 13.5px; line-height: 1.55; }
  .sheet .submit-row { display: flex; justify-content: flex-end; margin-top: 22px; }
  .sheet .terms { text-align: center; font-size: 13px; color: var(--ink-faint); margin-top: 22px; }
  .sheet .terms a { color: var(--sky-deep); text-decoration: none; }
  @media (max-width: 820px) {
    .sheet-split { grid-template-columns: 1fr; min-height: 0; }
    .sheet-aside { padding: 40px 32px 32px; border-right: 0; border-bottom: 1px solid var(--line-soft); }
    .sheet-form { padding: 28px 24px 40px; }
  }
  @media (max-width: 560px) { .sheet .frow { grid-template-columns: 1fr; gap: 0; } }

  /* "not connected yet" system module */
  .soon {
    position: fixed; inset: 0; z-index: 90; display: none;
    align-items: center; justify-content: center; padding: 24px;
    background: rgba(33,30,25,0.32); backdrop-filter: blur(3px);
  }
  .soon.show { display: flex; animation: soonIn 0.18s ease; }
  @keyframes soonIn { from { opacity: 0; } }
  .soon-card {
    background: var(--paper); border: 1px solid var(--line-strong);
    border-radius: var(--radius); padding: 30px 30px 26px; max-width: 340px; width: 100%;
    text-align: center; box-shadow: 0 24px 60px rgba(33,30,25,0.22);
  }
  .soon-tag { font-family: var(--pixel); font-size: 10.5px; letter-spacing: 0.14em; color: var(--ink-faint); }
  .soon-msg { font-size: 16px; color: var(--ink); margin: 14px 0 22px; line-height: 1.5; }

  .site-footer {
    text-align: center; padding: var(--gap-section) 32px 0;
    font-size: 13px; color: var(--ink-faint); position: relative; z-index: 1;
    display: flex; align-items: center; justify-content: center; gap: 18px; flex-wrap: wrap;
  }
  .site-footer .yc { margin-bottom: 0; font-size: 13px; }
  .site-footer .yc .yc-mark { width: 18px; height: 18px; font-size: 12px; }
  .site-footer .sep { color: var(--line-strong); }
  /* Static reveal avoids a full-viewport fixed compositing layer in WebKit. */
  .page { position: relative; z-index: 1; background: var(--paper); padding-bottom: 48px; }
  .reveal {
    height: clamp(200px, 40vh, 380px); overflow: hidden; background: var(--paper);
  }
  .reveal > img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
  .reveal-img { display: none; }

  /* WebKit layout fallbacks: avoid intrinsic grid/flex sizing drift. */
  .hero > *, .callrow > *, .models-list > *, .posts > *, .sheet-split > * { min-width: 0; }
  .message-entry { max-width: 100%; }
  video, img { max-width: 100%; }
  video { display: block; }

  @supports (height: 100svh) {
    .demo-panel.expanded {
      height: 100svh; bottom: auto;
      --expanded-call-size: min(70svh, 92vw, calc(100svh - 168px));
      --expanded-bar-size: min(56svh, 73.6vw, calc(80svh - 134.4px));
    }
  }




  @media (prefers-reduced-motion: reduce) {
    .figure, .cursor { animation: none; }
    .loading-dither-video { opacity: 0; animation: none; }
    .loading-state-frame::after { display: none; animation: none; }
    .loading-dither-frames img { animation: none; }
    .loading-dither-frames img:first-child { opacity: 1; }
  }