@charset "utf-8";

/* =============================================================================
   SonicBrief — site stylesheet
   Hand-written: no framework, no build step, no utility classes.
   Layers: reset → tokens → base → components → sections → motion
   ========================================================================== */

@layer reset, tokens, base, components, sections, motion;

/* ---------------------------------------------------------------- typefaces */

@font-face {
  font-family: "Manrope";
  src: url("../fonts/manrope-400.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Manrope";
  src: url("../fonts/manrope-600.ttf") format("truetype");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Manrope";
  src: url("../fonts/manrope-700.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Manrope";
  src: url("../fonts/manrope-800.ttf") format("truetype");
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}

/* -------------------------------------------------------------------- reset */

@layer reset {
  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }

  * {
    margin: 0;
  }

  html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    scroll-behavior: smooth;
  }

  body {
    min-height: 100dvh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
  }

  img,
  svg,
  video {
    display: block;
    max-width: 100%;
  }

  img {
    height: auto;
  }

  /* An explicit display value on a class beats the UA rule for [hidden]. */
  [hidden] {
    display: none !important;
  }

  input,
  button,
  select,
  textarea {
    font: inherit;
    color: inherit;
  }

  button {
    background: none;
    border: 0;
    cursor: pointer;
  }

  a {
    color: inherit;
    text-decoration: none;
  }

  ul,
  ol {
    list-style: none;
    padding: 0;
  }

  h1,
  h2,
  h3,
  h4 {
    font-weight: 700;
    text-wrap: balance;
  }

  p {
    text-wrap: pretty;
  }

  :target {
    scroll-margin-top: 96px;
  }
}

/* ------------------------------------------------------------------- tokens */

@layer tokens {
  :root {
    color-scheme: light;

    --font-sans: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial,
      "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, "SF Mono", "Cascadia Mono", "Segoe UI Mono", Menlo, Consolas, monospace;

    --bg: #fcfcfd;
    --bg-elev: #ffffff;
    --surface: #ffffff;
    --surface-2: #f6f5fa;
    --surface-3: #efeef6;
    --border: rgba(9, 9, 11, 0.08);
    --border-strong: rgba(9, 9, 11, 0.14);
    --text: #09090b;
    --text-2: #3f3f46;
    --muted: #52525b;
    --dim: #6a6a73;
    --brand: #5b46fb;
    --brand-2: #8b7bff;
    --brand-soft: rgba(91, 70, 251, 0.08);
    --brand-line: rgba(91, 70, 251, 0.22);
    --brand-ink: #ffffff;
    --ring: rgba(91, 70, 251, 0.45);
    --good: #12805c;
    --bad: #9f1239;
    --device: #101014;
    --terminal: #0d0d14;
    --terminal-border: rgba(255, 255, 255, 0.1);
    --terminal-text: #e6e4f2;

    --shadow-sm: 0 1px 2px rgba(16, 16, 24, 0.06);
    --shadow-md: 0 12px 28px -16px rgba(16, 16, 24, 0.28);
    --shadow-lg: 0 40px 90px -50px rgba(28, 20, 84, 0.5);
    --shadow-glow: 0 50px 120px -60px rgba(91, 70, 251, 0.55);

    --container: 1200px;
    --gutter: clamp(20px, 4.6vw, 40px);
    --header-h: 64px;
    --section-y: clamp(56px, 6.4vw, 96px);

    --r-xs: 8px;
    --r-sm: 12px;
    --r-md: 16px;
    --r-lg: 22px;
    --r-xl: 30px;
    --r-pill: 999px;

    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  }

  html[data-theme="dark"] {
    color-scheme: dark;

    --bg: #08080b;
    --bg-elev: #0e0e14;
    --surface: #111117;
    --surface-2: #16161e;
    --surface-3: #1d1d27;
    --border: rgba(255, 255, 255, 0.09);
    --border-strong: rgba(255, 255, 255, 0.16);
    --text: #f6f6f8;
    --text-2: #d4d4dd;
    --muted: #a1a1ad;
    --dim: #7e7e8b;
    --brand: #8b7bff;
    --brand-2: #a79bff;
    --brand-soft: rgba(139, 123, 255, 0.14);
    --brand-line: rgba(139, 123, 255, 0.3);
    --brand-ink: #0b0a16;
    --ring: rgba(139, 123, 255, 0.55);
    --good: #3ddc97;
    --bad: #ff7a99;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 16px 32px -20px rgba(0, 0, 0, 0.7);
    --shadow-lg: 0 50px 110px -60px rgba(0, 0, 0, 0.9);
    --shadow-glow: 0 50px 130px -50px rgba(124, 108, 255, 0.35);
  }
}

/* --------------------------------------------------------------------- base */

@layer base {
  body {
    font-family: var(--font-sans);
    font-size: 1.0625rem;
    line-height: 1.65;
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden;
  }

  ::selection {
    background: var(--brand);
    color: #fff;
  }

  :focus-visible {
    outline: 2px solid var(--ring);
    outline-offset: 3px;
    border-radius: 4px;
  }

  .container {
    width: 100%;
    max-width: var(--container);
    margin-inline: auto;
    padding-inline: var(--gutter);
  }

  .u-mono {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    letter-spacing: -0.01em;
  }

  .skip {
    position: fixed;
    top: 10px;
    left: 50%;
    translate: -50% -160%;
    z-index: 100;
    padding: 10px 18px;
    border-radius: var(--r-pill);
    background: var(--text);
    color: var(--bg);
    font-size: 0.875rem;
    font-weight: 600;
    transition: translate 0.2s var(--ease);
  }

  .skip:focus-visible {
    translate: -50% 0;
  }
}

/* --------------------------------------------------------------- components */

@layer components {
  /* --- brand ------------------------------------------------------------- */

  .brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    letter-spacing: -0.03em;
    font-size: 1.0625rem;
    color: var(--text);
  }

  .brand__mark {
    width: 30px;
    height: 30px;
    border-radius: 9px;
    box-shadow: 0 4px 12px -6px rgba(91, 70, 251, 0.7);
  }

  /* --- buttons ----------------------------------------------------------- */

  .btn {
    --btn-h: 44px;
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: var(--btn-h);
    padding: 0 18px;
    border-radius: var(--r-sm);
    font-size: 0.9375rem;
    font-weight: 650;
    letter-spacing: -0.01em;
    white-space: nowrap;
    cursor: pointer;
    transition: transform 0.18s var(--ease), background-color 0.18s var(--ease), border-color 0.18s var(--ease),
      box-shadow 0.24s var(--ease), color 0.18s var(--ease);
  }

  .btn--sm {
    --btn-h: 38px;
    padding: 0 14px;
    font-size: 0.875rem;
    border-radius: 10px;
  }

  .btn--lg {
    --btn-h: 50px;
    padding: 0 24px;
    font-size: 1rem;
    border-radius: 13px;
  }

  .btn--primary {
    color: #fff;
    background: linear-gradient(180deg, #6d5afc 0%, #5b46fb 100%);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.22), 0 8px 20px -10px rgba(91, 70, 251, 0.75);
  }

  .btn--primary:hover {
    transform: translateY(-1px);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.26), 0 14px 28px -12px rgba(91, 70, 251, 0.85);
  }

  .btn--primary:active {
    transform: translateY(0);
  }

  .btn--outline {
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--border-strong);
    box-shadow: var(--shadow-sm);
  }

  .btn--outline:hover {
    transform: translateY(-1px);
    border-color: var(--brand-line);
    background: var(--brand-soft);
  }

  .btn__meta {
    padding-left: 4px;
    opacity: 0.72;
    font-size: 0.75rem;
  }

  .btn--primary .btn__meta {
    color: rgba(255, 255, 255, 0.82);
  }

  /* --- eyebrow / pills --------------------------------------------------- */

  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--muted);
  }

  .eyebrow .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--brand);
    box-shadow: 0 0 0 4px var(--brand-soft);
  }

  /* --- window chrome ----------------------------------------------------- */

  .window {
    position: relative;
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    background: var(--bg-elev);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
  }

  .window__bar {
    display: flex;
    align-items: center;
    gap: 12px;
    height: 38px;
    padding-inline: 14px;
    border-bottom: 1px solid var(--border);
    background: color-mix(in srgb, var(--surface-2) 72%, transparent);
  }

  .window__dots {
    display: inline-flex;
    gap: 6px;
  }

  .window__dots i {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--border-strong);
  }

  .window__title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--dim);
    letter-spacing: -0.01em;
  }

  .window__chip {
    margin-left: auto;
    padding: 2px 8px;
    border-radius: var(--r-pill);
    border: 1px solid var(--border);
    background: var(--surface);
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--muted);
  }

  .window__body img,
  .tour__panel {
    display: block;
    width: 100%;
  }

  .window--sm {
    border-radius: var(--r-md);
  }

  .window--sm .window__bar {
    height: 32px;
  }

  /* --- tabs -------------------------------------------------------------- */

  .tabs {
    display: inline-flex;
    gap: 2px;
    padding: 4px;
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    background: var(--surface-2);
  }

  .tabs--center {
    display: flex;
    width: max-content;
    max-width: 100%;
    margin-inline: auto;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .tabs--center::-webkit-scrollbar {
    display: none;
  }

  .tab {
    padding: 8px 15px;
    border-radius: 9px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--muted);
    white-space: nowrap;
    transition: color 0.18s var(--ease), background-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
  }

  .tab:hover {
    color: var(--text);
  }

  .tab[aria-selected="true"] {
    color: var(--text);
    background: var(--surface);
    box-shadow: var(--shadow-sm), 0 1px 0 rgba(255, 255, 255, 0.5) inset;
  }

  /* --- segmented control ------------------------------------------------- */

  .segment {
    display: inline-flex;
    gap: 2px;
    padding: 3px;
    border-radius: 10px;
    background: var(--surface-2);
    border: 1px solid var(--border);
  }

  .segment button {
    padding: 5px 11px;
    border-radius: 7px;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--muted);
    transition: background-color 0.18s var(--ease), color 0.18s var(--ease);
  }

  .segment button:hover {
    color: var(--text);
  }

  .segment button[aria-pressed="true"] {
    background: var(--surface);
    color: var(--text);
    box-shadow: var(--shadow-sm);
  }

  .segment--sm button {
    padding: 4px 9px;
    font-size: 0.75rem;
  }

  /* --- code -------------------------------------------------------------- */

  .code {
    border-radius: var(--r-md);
    border: 1px solid var(--terminal-border);
    background: var(--terminal);
    overflow: hidden;
    box-shadow: var(--shadow-md);
  }

  .code__bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 8px 12px;
    border-bottom: 1px solid var(--terminal-border);
    background: rgba(255, 255, 255, 0.03);
  }

  .code__name {
    font-size: 0.6875rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(230, 228, 242, 0.55);
  }

  .code__copy {
    padding: 4px 10px;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: rgba(230, 228, 242, 0.72);
    transition: background-color 0.18s var(--ease), color 0.18s var(--ease);
  }

  .code__copy:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
  }

  .code pre {
    margin: 0;
    padding: 16px;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.7;
    color: var(--terminal-text);
    tab-size: 2;
  }

  /* --- toast ------------------------------------------------------------- */

  .toast {
    position: fixed;
    left: 50%;
    bottom: 28px;
    translate: -50% 140%;
    z-index: 90;
    padding: 10px 18px;
    border-radius: var(--r-pill);
    background: var(--text);
    color: var(--bg);
    font-size: 0.875rem;
    font-weight: 600;
    box-shadow: var(--shadow-lg);
    transition: translate 0.32s var(--ease);
    pointer-events: none;
  }

  .toast:empty {
    display: none;
  }

  .toast.is-visible {
    translate: -50% 0;
  }
}

/* ------------------------------------------------------------------ header */

@layer components {
  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease), backdrop-filter 0.2s var(--ease);
  }

  .site-header.is-stuck {
    border-bottom-color: var(--border);
    background: color-mix(in srgb, var(--bg) 82%, transparent);
    backdrop-filter: saturate(180%) blur(16px);
  }

  .site-header__inner {
    display: flex;
    align-items: center;
    gap: 16px;
    height: var(--header-h);
  }

  .nav {
    display: flex;
    align-items: center;
    gap: 2px;
    margin-left: 14px;
  }

  .nav__link {
    padding: 7px 11px;
    border-radius: 9px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--muted);
    transition: color 0.16s var(--ease), background-color 0.16s var(--ease);
  }

  .nav__link:hover {
    color: var(--text);
    background: var(--surface-2);
  }

  .nav__link[aria-current="true"] {
    color: var(--text);
  }

  .nav__actions {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
  }

  .gh-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 38px;
    padding: 0 12px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--surface);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-2);
    transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
  }

  .gh-link:hover {
    border-color: var(--border-strong);
    color: var(--text);
  }

  .gh-link svg {
    color: var(--text);
  }

  .gh-link__count {
    padding-left: 6px;
    margin-left: 2px;
    border-left: 1px solid var(--border);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--muted);
  }

  .lang-toggle {
    display: inline-flex;
    padding: 3px;
    border-radius: 9px;
    border: 1px solid var(--border);
    background: var(--surface-2);
  }

  .lang-toggle__opt {
    padding: 4px 9px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--dim);
    transition: background-color 0.18s var(--ease), color 0.18s var(--ease);
  }

  .lang-toggle__opt:hover {
    color: var(--text);
  }

  .lang-toggle__opt.is-active {
    background: var(--surface);
    color: var(--text);
    box-shadow: var(--shadow-sm);
  }

  .icon-btn {
    display: inline-grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text-2);
    transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
  }

  .icon-btn:hover {
    border-color: var(--border-strong);
    color: var(--text);
  }

  .icon-btn__moon,
  html[data-theme="dark"] .icon-btn__sun {
    display: none;
  }

  html[data-theme="dark"] .icon-btn__moon {
    display: block;
  }

  .nav-toggle {
    display: none;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--surface);
  }

  .nav-toggle span {
    display: block;
    width: 16px;
    height: 1.6px;
    margin: 3.4px auto;
    border-radius: 2px;
    background: var(--text);
    transition: transform 0.24s var(--ease), opacity 0.2s var(--ease);
  }

  .nav-toggle[aria-expanded="true"] span:first-child {
    transform: translateY(2.5px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] span:last-child {
    transform: translateY(-2.5px) rotate(-45deg);
  }

  .nav-panel {
    display: grid;
    gap: 2px;
    padding: 8px var(--gutter) 16px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-elev);
  }

  .nav-panel a {
    padding: 11px 4px;
    font-size: 1rem;
    font-weight: 600;
    border-bottom: 1px solid var(--border);
  }

  .nav-panel a:last-of-type {
    border-bottom: 0;
    color: var(--brand);
  }

  .lang-toggle--panel {
    display: inline-flex;
    margin-top: 14px;
    width: fit-content;
  }
}

/* -------------------------------------------------------------------- hero */

@layer sections {
  .hero {
    position: relative;
    padding-top: clamp(40px, 6vw, 76px);
    padding-bottom: clamp(48px, 7vw, 96px);
    overflow: clip;
  }

  .hero__glow {
    position: absolute;
    inset-inline: 50%;
    top: -260px;
    width: min(1100px, 130vw);
    aspect-ratio: 1.6;
    translate: -50% 0;
    background: radial-gradient(
      closest-side,
      rgba(91, 70, 251, 0.22),
      rgba(139, 123, 255, 0.09) 46%,
      transparent 72%
    );
    filter: blur(10px);
    pointer-events: none;
    z-index: 0;
  }

  html[data-theme="dark"] .hero__glow {
    background: radial-gradient(
      closest-side,
      rgba(124, 108, 255, 0.3),
      rgba(124, 108, 255, 0.1) 48%,
      transparent 74%
    );
  }

  .hero__copy {
    display: grid;
    justify-items: center;
    gap: 18px;
    max-width: 900px;
  }

  .hero__title {
    font-size: clamp(2.5rem, 5.6vw, 4.35rem);
    line-height: 1.04;
    font-weight: 800;
    letter-spacing: -0.038em;
  }

  .hero__title span {
    display: block;
  }

  .hero__title em {
    font-style: normal;
    background: linear-gradient(96deg, var(--brand) 12%, var(--brand-2) 96%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }

  .hero__sub {
    max-width: 660px;
    font-size: clamp(1rem, 1.35vw, 1.125rem);
    line-height: 1.62;
    color: var(--muted);
  }

  .hero__sub strong {
    display: block;
    margin-top: 6px;
    font-weight: 700;
    color: var(--text);
  }

  .hero__actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-top: 4px;
  }

  .hero__meta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 4px 10px;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--dim);
  }

  /* floating status cards */
  .float {
    position: absolute;
    z-index: 2;
    display: grid;
    gap: 8px;
    padding: 12px 14px;
    border-radius: 14px;
    border: 1px solid var(--border);
    background: color-mix(in srgb, var(--bg-elev) 84%, transparent);
    backdrop-filter: blur(14px) saturate(160%);
    box-shadow: var(--shadow-md);
  }

  .float--progress {
    left: -18px;
    bottom: 34px;
    width: 208px;
  }

  .float--summary {
    top: -22px;
    right: -14px;
    grid-auto-flow: column;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
  }

  .float__top {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 8px;
  }

  .float__label {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: -0.01em;
  }

  .float__time {
    font-size: 0.6875rem;
    color: var(--dim);
  }

  .float__bar {
    height: 5px;
    border-radius: 3px;
    background: var(--surface-3);
    overflow: hidden;
  }

  .float__bar i {
    display: block;
    width: var(--v, 60%);
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--brand), var(--brand-2));
  }

  .float__steps {
    display: flex;
    align-items: center;
    gap: 5px;
  }

  .float__step {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--surface-3);
  }

  .float__step.is-done {
    background: var(--brand);
    opacity: 0.55;
  }

  .float__step.is-active {
    background: var(--brand);
    box-shadow: 0 0 0 3px var(--brand-soft);
  }

  .float__steptext {
    margin-left: 4px;
    font-size: 0.625rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--muted);
    white-space: nowrap;
  }

  .float__badge {
    display: grid;
    place-items: center;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--brand-soft);
    color: var(--brand);
  }

  .float__title {
    font-size: 0.75rem;
    font-weight: 700;
  }

  .float__sub {
    font-size: 0.625rem;
    color: var(--dim);
  }
}
/* --------------------------------------------------------------- sections */

@layer sections {
  .section {
    padding-block: var(--section-y);
  }

  .section__head {
    display: grid;
    gap: 12px;
    max-width: 760px;
    margin-bottom: clamp(26px, 3.2vw, 38px);
  }

  .section__head--center {
    justify-items: center;
    text-align: center;
    margin-inline: auto;
  }

  .section__title {
    font-size: clamp(1.85rem, 3.4vw, 2.65rem);
    line-height: 1.1;
    letter-spacing: -0.032em;
    font-weight: 700;
  }

  .section__sub {
    font-size: clamp(0.9875rem, 1.2vw, 1.0625rem);
    line-height: 1.65;
    color: var(--muted);
    max-width: 62ch;
  }

  .section__note {
    max-width: 820px;
    margin-top: clamp(28px, 3.4vw, 40px);
    padding: 16px 20px;
    border-radius: var(--r-md);
    border: 1px solid var(--border);
    border-left: 2px solid var(--brand-line);
    background: var(--surface-2);
    font-size: 0.9375rem;
    line-height: 1.65;
    color: var(--muted);
  }

  .section__head--center + .section__note {
    margin-inline: auto;
  }

  /* --- tour -------------------------------------------------------------- */

  .tour__stage {
    display: grid;
    justify-items: center;
    gap: 18px;
    max-width: 1080px;
    margin-inline: auto;
  }

  .tour__window {
    width: 100%;
  }

  .tour__panels {
    position: relative;
    aspect-ratio: 1920 / 991;
    background: var(--surface-2);
  }

  .tour__panel {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 0.42s var(--ease);
  }

  .tour__panel img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
  }

  .tour__panel.is-active {
    opacity: 1;
  }

  .tour__caption {
    max-width: 640px;
    text-align: center;
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--muted);
    min-height: 1.6em;
  }

  /* --- compare ----------------------------------------------------------- */

  .compare__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    max-width: 1000px;
  }

  .plan {
    display: grid;
    align-content: start;
    padding: clamp(20px, 2.4vw, 26px);
    border-radius: var(--r-lg);
    border: 1px solid var(--border);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
  }

  .plan--muted {
    background: var(--surface-2);
  }

  .plan--brand {
    border-color: var(--brand-line);
    background:
      radial-gradient(120% 90% at 12% 0%, var(--brand-soft) 0%, transparent 58%),
      var(--surface);
    box-shadow: var(--shadow-md), 0 0 0 1px var(--brand-line) inset;
  }

  .plan__head {
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
  }

  .plan__head h3 {
    font-size: 1.0625rem;
    font-weight: 700;
    letter-spacing: -0.02em;
  }

  .plan__head p {
    margin-top: 2px;
    font-size: 0.8125rem;
    color: var(--dim);
  }

  .plan__rows {
    display: grid;
  }

  .plan__rows li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding-block: 11px;
    border-bottom: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  }

  .plan__rows li:last-child {
    border-bottom: 0;
    padding-bottom: 0;
  }

  .plan__k {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--dim);
  }

  .plan__v {
    /* Mark sits at the end so every row finishes on the same edge. */
    display: inline-flex;
    flex-direction: row-reverse;
    align-items: center;
    gap: 7px;
    text-align: right;
    font-size: 0.8125rem;
    font-weight: 650;
    letter-spacing: -0.005em;
  }

  .plan--muted .plan__v {
    color: var(--muted);
    font-weight: 400;
  }

  /* Documentation variant: label column, left-aligned values, no marks. */
  .plan--doc .plan__rows li {
    display: grid;
    grid-template-columns: minmax(84px, 132px) 1fr;
    align-items: start;
    gap: 16px;
  }

  .plan--doc .plan__v {
    flex-direction: row;
    justify-content: flex-start;
    text-align: left;
    font-weight: 500;
    color: var(--muted);
  }

  .mark {
    display: inline-grid;
    place-items: center;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    font-size: 0.625rem;
    font-weight: 800;
    line-height: 1;
    flex: none;
  }

  .mark--no {
    background: color-mix(in srgb, var(--muted) 12%, transparent);
    color: var(--dim);
  }

  .mark--no::before {
    content: "✕";
  }

  .mark--yes {
    background: var(--brand-soft);
    color: var(--brand);
  }

  .mark--yes::before {
    content: "✓";
  }

  /* --- bento ------------------------------------------------------------- */

  .bento {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
  }

  .feature {
    display: grid;
    align-content: start;
    gap: 9px;
    padding: clamp(18px, 2vw, 24px);
    border-radius: var(--r-lg);
    border: 1px solid var(--border);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
    transition: transform 0.24s var(--ease), border-color 0.24s var(--ease), box-shadow 0.28s var(--ease);
  }

  .feature:hover {
    transform: translateY(-2px);
    border-color: var(--brand-line);
    box-shadow: var(--shadow-md);
  }

  .feature__icon {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    margin-bottom: 2px;
    border-radius: 10px;
    background: var(--brand-soft);
    color: var(--brand);
  }

  .feature__title {
    font-size: 0.9375rem;
    font-weight: 700;
    letter-spacing: -0.015em;
  }

  .feature__text {
    font-size: 0.8438rem;
    line-height: 1.62;
    color: var(--muted);
  }

  .feature__wave i {
    flex: 1;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--brand-2), var(--brand));
    opacity: 0.5;
    height: 30%;
  }
  .feature__wave i:nth-child(3) { height: 44%; }  .feature__wave i:nth-child(5) { height: 100%; }  .feature__wave i:nth-child(7) { height: 48%; }  .feature__wave i:nth-child(9) { height: 36%; }

  .panels {
    max-width: 1040px;
    margin: clamp(26px, 3.4vw, 36px) auto 0;
  }

  .panel {
    animation: panel-in 0.4s var(--ease) both;
  }

  .panel__grid {
    display: grid;
    grid-template-columns: 1.06fr 0.94fr;
    align-items: center;
    gap: clamp(24px, 4vw, 54px);
    padding: clamp(20px, 2.8vw, 34px);
    border-radius: var(--r-xl);
    border: 1px solid var(--border);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
  }

  .panel__copy h3 {
    font-size: clamp(1.25rem, 1.9vw, 1.5rem);
    letter-spacing: -0.028em;
    line-height: 1.2;
  }

  .panel__copy > p {
    margin-top: 10px;
    font-size: 0.9375rem;
    line-height: 1.66;
    color: var(--muted);
  }

  .panel__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 20px;
  }

  .panel__fine {
    margin-top: 14px;
    font-size: 0.8125rem;
    line-height: 1.6;
    color: var(--dim);
  }

  .panel__art {
    display: grid;
    place-items: center;
    min-width: 0;
  }

  /* --- phone ------------------------------------------------------------- */

  /* The screen carries the aspect ratio, not the frame: the captures are
     exactly 9:16, so the whole screenshot fits and nothing is cropped away by
     object-fit. The 1px inner ring gives the white app a finished edge against
     the black bezel instead of a hard clipped rectangle. */
  /* Square captures, no frame and no rounding: the screenshot is shown exactly
     as captured. A hairline and a soft shadow stop it from bleeding into the
     page; nothing is masked, cropped or curved. */
  .screen {
    position: relative;
    width: 300px;
    background: var(--surface);
    border: 1px solid var(--border-strong);
    box-shadow:
      0 18px 40px -26px rgba(16, 12, 46, 0.42),
      0 2px 6px rgba(16, 12, 46, 0.05);
    transition: transform 0.28s var(--ease), border-color 0.28s var(--ease), box-shadow 0.3s var(--ease);
  }

  html[data-theme="dark"] .screen {
    box-shadow:
      0 18px 40px -22px rgba(0, 0, 0, 0.9),
      0 2px 6px rgba(0, 0, 0, 0.5);
  }

  .screen img {
    display: block;
    width: 100%;
    height: auto;
  }

  .screen--panel {
    width: 276px;
  }

  /* --- browser frame ----------------------------------------------------- */

  .browser {
    width: 100%;
    max-width: 372px;
    border-radius: var(--r-md);
    border: 1px solid var(--border);
    background: var(--surface);
    box-shadow: var(--shadow-md);
    overflow: hidden;
  }

  .browser__bar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 9px;
    border-bottom: 1px solid var(--border);
    background: var(--surface-2);
  }

  .browser__dots {
    display: inline-flex;
    gap: 5px;
  }

  .browser__dots i {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--border-strong);
  }

  .browser__url {
    flex: 1;
    min-width: 0;
    padding: 2px 8px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--bg);
    font-size: 0.625rem;
    color: var(--dim);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .browser__pin img {
    border-radius: 4px;
    box-shadow: var(--shadow-sm);
  }

  .browser__popup {
    display: grid;
    place-items: center;
    padding: 18px 30px 28px;
    background:
      radial-gradient(120% 90% at 50% 0%, var(--brand-soft) 0%, transparent 62%),
      linear-gradient(180deg, var(--surface-2), var(--surface));
  }

  .browser__popup img {
    width: 100%;
    max-width: 300px;
    border-radius: 10px;
    box-shadow: var(--shadow-md);
  }

  /* ------------------------------------------------------------- gallery */

  .gallery__rail {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(18px, 3vw, 32px) 18px;
  }

  .shot {
    display: grid;
    justify-items: center;
    gap: 12px;
    margin: 0;
  }

  .shot .screen {
    width: min(300px, 100%);
  }

  .shot:hover .screen {
    transform: translateY(-4px);
    border-color: var(--brand-line);
    box-shadow:
      0 26px 50px -26px rgba(16, 12, 46, 0.5),
      0 2px 6px rgba(16, 12, 46, 0.06);
  }

  .shot figcaption {
    font-size: 0.8125rem;
    font-weight: 400;
    color: var(--dim);
    text-align: center;
    max-width: 22ch;
  }

  /* ------------------------------------------------------------- privacy */

  .privacy__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
  }

  .privacy__item {
    padding: 20px;
    border-radius: var(--r-md);
    border: 1px solid var(--border);
    background: var(--surface);
  }

  .privacy__icon {
    display: grid;
    place-items: center;
    width: 32px;
    height: 32px;
    margin-bottom: 12px;
    border-radius: 9px;
    background: var(--brand-soft);
    color: var(--brand);
  }

  .privacy__item h3 {
    font-size: 0.9375rem;
    font-weight: 700;
    letter-spacing: -0.015em;
  }

  .privacy__item p {
    margin-top: 6px;
    font-size: 0.8438rem;
    line-height: 1.62;
    color: var(--muted);
  }

  /* ----------------------------------------------------------------- faq */

  .faq__inner {
    display: grid;
    grid-template-columns: 0.82fr 1.18fr;
    gap: clamp(28px, 5vw, 72px);
    align-items: start;
  }

  .faq__inner .section__head {
    position: sticky;
    top: calc(var(--header-h) + 32px);
    margin-bottom: 0;
  }

  .qa {
    border-top: 1px solid var(--border);
  }

  .qa__item {
    border-bottom: 1px solid var(--border);
  }

  .qa__item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 15px 2px;
    font-size: 0.9375rem;
    font-weight: 650;
    letter-spacing: -0.012em;
    cursor: pointer;
    list-style: none;
    transition: color 0.18s var(--ease);
  }

  .qa__item summary::-webkit-details-marker {
    display: none;
  }

  .qa__item summary:hover {
    color: var(--brand);
  }

  .qa__item summary::after {
    content: "+";
    flex: none;
    font-size: 1.125rem;
    font-weight: 400;
    line-height: 1;
    color: var(--dim);
    transition: transform 0.24s var(--ease), color 0.24s var(--ease);
  }

  .qa__item[open] summary::after {
    content: "−";
    color: var(--brand);
  }

  .qa__body p {
    padding: 0 2px 18px;
    max-width: 58ch;
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--muted);
    animation: fade-up 0.32s var(--ease) both;
  }

  /* ----------------------------------------------------------------- cta */

  .cta {
    padding-block: clamp(56px, 7vw, 92px);
    border-top: 1px solid var(--border);
    background:
      radial-gradient(90% 130% at 50% 0%, var(--brand-soft) 0%, transparent 64%),
      var(--surface-2);
  }

  .cta__inner {
    display: grid;
    justify-items: center;
    text-align: center;
    gap: 12px;
  }

  .cta__title {
    max-width: 760px;
    font-size: clamp(1.55rem, 2.9vw, 2.15rem);
    line-height: 1.18;
    letter-spacing: -0.03em;
  }

  .cta__sub {
    font-size: 0.9375rem;
    color: var(--muted);
  }

  .cta__actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-top: 8px;
  }

  /* -------------------------------------------------------------- footer */

  .footer {
    border-top: 1px solid var(--border);
    background: var(--bg);
    padding-top: clamp(40px, 5vw, 60px);
  }

  .footer__inner {
    display: grid;
    grid-template-columns: 1.7fr repeat(3, 1fr);
    gap: 32px;
    padding-bottom: clamp(32px, 4vw, 48px);
  }

  .footer__brand p {
    margin-top: 12px;
    max-width: 36ch;
    font-size: 0.875rem;
    line-height: 1.65;
    color: var(--muted);
  }

  .footer__col {
    display: grid;
    align-content: start;
    gap: 9px;
  }

  .footer__col h3 {
    margin-bottom: 4px;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--dim);
  }

  .footer__col a {
    width: fit-content;
    font-size: 0.875rem;
    color: var(--muted);
    transition: color 0.16s var(--ease);
  }

  .footer__col a:hover {
    color: var(--brand);
  }

  .footer__legal {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 8px 20px;
    padding-block: 18px 26px;
    border-top: 1px solid var(--border);
    font-size: 0.75rem;
    color: var(--dim);
  }

  .footer__legal p {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }
}

/* ------------------------------------------------------------ CJK settings */

@layer sections {
  /* Manrope has no CJK glyphs, so Chinese falls back to the system stack.
     Negative tracking and 1.04 leading that flatter Latin look cramped in Han
     characters, so the Chinese view relaxes both. */
  .lang-zh {
    letter-spacing: 0;
  }

  .lang-zh .hero__title {
    font-size: clamp(2.05rem, 4.4vw, 3.55rem);
    line-height: 1.2;
    letter-spacing: 0;
  }

  .lang-zh .section__title,
  .lang-zh .cta__title {
    letter-spacing: 0;
    line-height: 1.28;
  }

  .lang-zh .hero__sub,
  .lang-zh .section__sub,
  .lang-zh .panel__copy > p,
  .lang-zh .faq__body p,
  .lang-zh .privacy__item p,
  .lang-zh .feature__text,
  .lang-zh .step__text {
    line-height: 1.8;
  }

  .lang-zh .eyebrow,
  .lang-zh .sources__label,
  .lang-zh .footer__col h3 {
    letter-spacing: 0.06em;
  }

  .lang-zh .plan__v,
  .lang-zh .qa__item summary,
  .lang-zh .tab {
    letter-spacing: 0;
  }
}

/* ------------------------------------------------------------------- motion */

@layer motion {
  @keyframes panel-in {
    from {
      opacity: 0;
      transform: translateY(6px);
    }
    to {
      opacity: 1;
      transform: none;
    }
  }

  @keyframes fade-up {
    from {
      opacity: 0;
      transform: translateY(6px);
    }
    to {
      opacity: 1;
      transform: none;
    }
  }

  body.reveal-on [data-reveal] {
    opacity: 0;
    transform: translateY(18px);
  }

  body.reveal-on [data-reveal].is-in {
    opacity: 1;
    transform: none;
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
    transition-delay: var(--reveal-delay, 0ms);
  }

  @media (prefers-reduced-motion: reduce) {
    html {
      scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
    }

    body.reveal-on [data-reveal] {
      opacity: 1;
      transform: none;
    }
  }
}

/* -------------------------------------------------------------- responsive */

@layer sections {
  @media (max-width: 1080px) {
    .bento {
      grid-template-columns: repeat(2, 1fr);
    }

    .steps__list {
      grid-template-columns: 1fr;
      gap: 0;
    }

    .steps__list::before {
      top: 10px;
      bottom: 10px;
      left: 15px;
      right: auto;
      width: 1px;
      height: auto;
      background: linear-gradient(180deg, transparent, var(--border-strong) 6%, var(--border-strong) 94%, transparent);
    }

    .step {
      grid-template-columns: 32px 1fr;
      column-gap: 16px;
      row-gap: 4px;
      align-items: center;
      padding-block: 14px;
    }

    .step__num {
      grid-column: 1;
      grid-row: 1;
      box-shadow: 0 0 0 5px var(--bg);
    }

    .step__title {
      grid-column: 2;
      grid-row: 1;
      margin-top: 0;
    }

    .step__text {
      grid-column: 2;
      grid-row: 2;
    }
  }

  @media (max-width: 1024px) {
    .faq__inner {
      grid-template-columns: 1fr;
    }

    .faq__inner .section__head {
      position: static;
      margin-bottom: 24px;
    }

    .privacy__grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @media (max-width: 940px) {
    .compare__grid,
    .sample__grid,
    .panel__grid {
      grid-template-columns: 1fr;
    }

    .panel__grid {
      gap: 26px;
    }

    .panel__art {
      order: 2;
    }

    .footer__inner {
      grid-template-columns: 1fr 1fr;
      gap: 26px 20px;
    }

    .footer__brand {
      grid-column: span 2;
    }
  }

  @media (max-width: 860px) {
    .nav {
      display: none;
    }

    .nav-toggle {
      display: block;
    }

    .gh-link__label,
    .gh-link__count {
      display: none;
    }

    .gh-link {
      padding-inline: 10px;
    }

    .float--summary {
      right: -6px;
    }
  }

  @media (max-width: 760px) {
    :root {
      --header-h: 58px;
    }

    .float {
      display: none;
    }

    .gallery__rail {
      grid-auto-flow: column;
      grid-auto-columns: 74%;
      grid-template-columns: none;
      gap: 14px;
      overflow-x: auto;
      scroll-snap-type: x mandatory;
      scrollbar-width: none;
      padding-bottom: 6px;
      margin-inline: calc(var(--gutter) * -1);
      padding-inline: var(--gutter);
    }

    .gallery__rail::-webkit-scrollbar {
      display: none;
    }

    .shot {
      scroll-snap-align: center;
    }

    .shot .screen {
      width: 100%;
      max-width: 300px;
    }

    .privacy__grid {
      grid-template-columns: 1fr;
    }

    .section__note {
      font-size: 0.875rem;
    }
  }

  @media (max-width: 620px) {
    .bento {
      grid-template-columns: 1fr;
    }

    /* Tab strips scroll instead of being clipped by the viewport. */
    .tabs {
      max-width: 100%;
      overflow-x: auto;
      scrollbar-width: none;
    }

    .tabs::-webkit-scrollbar {
      display: none;
    }

    .hero__meta {
      gap: 6px 9px;
    }

    /* The separators read as stray pixels once the row wraps on a phone. */
    .hero__meta > [aria-hidden] {
      display: none;
    }

    .window__title {
      display: none;
    }

    .hero__title {
      font-size: clamp(2.1rem, 8.6vw, 2.5rem);
      letter-spacing: -0.028em;
    }

    /* Let the sentence wrap naturally instead of forcing a break at each span. */
    .hero__title span {
      display: inline;
    }

    .nav__actions {
      gap: 6px;
    }

    .nav__actions .lang-toggle {
      display: none;
    }

    .hero__meta {
      font-size: 0.75rem;
    }

    .plan__k,
    .plan__v {
      font-size: 0.8125rem;
    }

    .footer__legal {
      flex-direction: column;
      align-items: flex-start;
      gap: 6px;
    }

    .cta__actions .btn,
    .hero__actions .btn {
      width: 100%;
    }
  }

  @media (max-width: 420px) {
    .gh-link {
      display: none;
    }

    .hero__sub {
      font-size: 0.9375rem;
    }

    .tabs {
      width: 100%;
    }

    .tab {
      flex: 1;
      padding: 8px 10px;
      font-size: 0.8125rem;
    }
  }
}

/* --------------------------------------------------------------- utilities */

@layer sections {
  .u-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
  }
}


/* ================================================================ v2 motion */

@layer sections {
  .progress {
    position: fixed;
    inset: 0 0 auto;
    height: 2px;
    z-index: 60;
    pointer-events: none;
  }

  .progress i {
    display: block;
    height: 100%;
    transform: scaleX(0);
    transform-origin: 0 50%;
    background: linear-gradient(90deg, var(--brand), var(--brand-2));
  }

  .hero {
    padding-block: 0;
  }

  .hero__grid {
    display: grid;
    grid-template-columns: 0.96fr 1.04fr;
    align-items: center;
    gap: clamp(30px, 4.5vw, 68px);
    padding-block: clamp(40px, 5.5vw, 84px) clamp(44px, 6vw, 92px);
  }

  .hero__copy {
    display: grid;
    justify-items: start;
    text-align: left;
    gap: 18px;
    max-width: 560px;
  }

  .announce {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 4px 12px 4px 4px;
    border-radius: var(--r-pill);
    border: 1px solid var(--border);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--muted);
    transition: transform 0.24s var(--ease), border-color 0.24s var(--ease), color 0.24s var(--ease);
  }

  .announce:hover {
    transform: translateX(2px);
    border-color: var(--brand-line);
    color: var(--text);
  }

  .announce__tag {
    padding: 2px 9px;
    border-radius: var(--r-pill);
    background: var(--brand-soft);
    color: var(--brand);
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 700;
  }

  .hero__title {
    font-size: clamp(2.35rem, 4.7vw, 3.85rem);
    line-height: 1.03;
    letter-spacing: -0.042em;
  }

  .hero__title em {
    font-style: normal;
    background: linear-gradient(96deg, var(--brand) 8%, var(--brand-2) 94%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    background-size: 220% 100%;
    animation: shimmer 9s ease-in-out infinite;
  }

  .hero__sub {
    max-width: 46ch;
    font-size: clamp(0.9875rem, 1.15vw, 1.0938rem);
    line-height: 1.62;
    color: var(--muted);
  }

  .hero__actions {
    justify-content: flex-start;
    margin-top: 2px;
  }

  .hero__meta {
    justify-content: flex-start;
    gap: 4px 9px;
    font-size: 0.8125rem;
  }

  .stage {
    position: relative;
    min-width: 0;
  }

  .stage__rings {
    position: absolute;
    inset: -14% -10%;
    display: grid;
    place-items: center;
    pointer-events: none;
  }

  .stage__rings i {
    position: absolute;
    aspect-ratio: 1;
    border-radius: 50%;
    border: 1px solid var(--brand-line);
    opacity: 0.5;
    animation: breathe 9s ease-in-out infinite;
  }

  .stage__rings i:nth-child(1) { width: 66%; animation-delay: -3s; }
  .stage__rings i:nth-child(2) { width: 86%; opacity: 0.3; animation-delay: -6s; }
  .stage__rings i:nth-child(3) { width: 100%; opacity: 0.18; }

  .stage__window {
    position: relative;
    z-index: 1;
    transform: rotate(-1.1deg);
    transition: transform 0.55s var(--ease), box-shadow 0.55s var(--ease);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
  }

  .stage:hover .stage__window {
    transform: rotate(0deg) translateY(-3px);
  }

  .stage .float {
    z-index: 2;
  }

  .stage .float--progress {
    left: -26px;
    bottom: 30px;
    animation: bob 7s ease-in-out infinite;
  }

  .stage .float--summary {
    top: -18px;
    right: -16px;
    animation: bob 7s ease-in-out infinite reverse;
  }

  .marquee {
    overflow: hidden;
    padding-block: 15px;
    border-block: 1px solid var(--border);
    background: color-mix(in srgb, var(--surface-2) 40%, transparent);
    mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent);
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent);
  }

  .marquee__track {
    display: flex;
    width: max-content;
    animation: marquee 38s linear infinite;
  }

  .marquee:hover .marquee__track {
    animation-play-state: paused;
  }

  .marquee__group {
    display: flex;
    align-items: center;
    gap: 26px;
    padding-right: 26px;
  }

  .marquee__group span {
    white-space: nowrap;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--dim);
  }

  .marquee__group span:not(:last-child)::after {
    content: "";
    display: inline-block;
    width: 4px;
    height: 4px;
    margin-left: 26px;
    border-radius: 50%;
    background: var(--border-strong);
    vertical-align: 2px;
  }

  .stats {
    border-bottom: 1px solid var(--border);
  }

  .stats__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    padding-block: clamp(28px, 3.6vw, 42px);
  }

  .stat {
    display: grid;
    gap: 5px;
    padding-left: clamp(0px, 2vw, 24px);
    border-left: 1px solid var(--border);
  }

  .stat:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .stat__value {
    font-size: clamp(1.9rem, 3.1vw, 2.6rem);
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.045em;
    font-variant-numeric: tabular-nums;
  }

  .stat__unit {
    margin-left: 3px;
    font-size: 0.5em;
    font-weight: 700;
    color: var(--muted);
  }

  .stat__label {
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--dim);
  }

  .feature,
  .privacy__item {
    position: relative;
    overflow: hidden;
    isolation: isolate;
  }

  .feature::after,
  .privacy__item::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(240px circle at var(--mx, 50%) var(--my, 0%), var(--brand-soft), transparent 62%);
    opacity: 0;
    transition: opacity 0.32s var(--ease);
    pointer-events: none;
    z-index: -1;
  }

  .feature:hover::after,
  .privacy__item:hover::after {
    opacity: 1;
  }

  .shot figcaption {
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--dim);
  }

  @media (max-width: 980px) {
    .hero__grid {
      grid-template-columns: 1fr;
      gap: 34px;
    }

    .hero__copy {
      max-width: none;
    }

    .stage {
      order: 2;
    }

    .stage__window {
      transform: none;
    }

    .stage .float--progress {
      left: 10px;
      bottom: 14px;
    }

    .stage .float--summary {
      top: -14px;
      right: 4px;
    }
  }

  @media (max-width: 760px) {
    .stats__grid {
      grid-template-columns: repeat(2, 1fr);
      gap: 22px 16px;
    }

    .stage .float {
      display: none;
    }

    .stage__rings {
      inset: -6% -4%;
    }
  }
}

@layer motion {
  @keyframes marquee {
    to {
      transform: translateX(-50%);
    }
  }

  @keyframes bob {
    0%,
    100% {
      transform: translateY(0);
    }
    50% {
      transform: translateY(-7px);
    }
  }

  @keyframes breathe {
    0%,
    100% {
      transform: scale(1);
      opacity: 0.18;
    }
    50% {
      transform: scale(1.04);
      opacity: 0.42;
    }
  }

  @keyframes shimmer {
    0%,
    100% {
      background-position: 0% 50%;
    }
    50% {
      background-position: 100% 50%;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    .marquee__track,
    .stage .float,
    .stage__rings i,
    .hero__title em {
      animation: none !important;
    }

    .stage__window {
      transform: none;
    }
  }
}