@font-face {
  font-family: "Instrument Sans";
  src: url("./assets/InstrumentSans-Variable.ttf") format("truetype");
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("./assets/IBMPlexMono-Regular.ttf") format("truetype");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

:root {
  color-scheme: light dark;
  --canvas: #eef0f5;
  --surface: #fafbff;
  --ink: #141720;
  --muted: #6f7688;
  --faint: #d9dce6;
  --violet: #6859ea;
  --violet-soft: #dedafd;
  --coral: #f36e61;
  --coral-soft: #ffd9d5;
  --focus: #3528bd;
  --page-gutter: clamp(20px, 5vw, 56px);
  --content: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--canvas);
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  min-height: 100dvh;
  margin: 0;
  background:
    radial-gradient(circle at 82% 9%, rgb(104 89 234 / 9%), transparent 32rem),
    var(--canvas);
  color: var(--ink);
  font-family: "Instrument Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
}

a:hover {
  color: var(--violet);
}

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--focus) 72%, transparent);
  outline-offset: 4px;
  border-radius: 4px;
}

.skip-link {
  position: fixed;
  z-index: 10;
  inset: 12px auto auto 12px;
  padding: 9px 13px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--surface);
  transform: translateY(-180%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header,
.page,
.site-footer {
  width: min(100%, calc(var(--content) + var(--page-gutter) * 2));
  margin-inline: auto;
  padding-inline: var(--page-gutter);
}

.site-header {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  min-height: 88px;
  border-bottom: 1px solid var(--faint);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  width: fit-content;
  font-weight: 620;
  letter-spacing: -0.02em;
  text-decoration: none;
}

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

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 10px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 30px);
  font-size: 14px;
  color: var(--muted);
}

.site-nav a {
  text-decoration: none;
}

.language-switch {
  display: inline-grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--faint);
  border-radius: 10px;
  background: color-mix(in srgb, var(--surface) 78%, transparent);
}

.language-switch button {
  min-width: 42px;
  min-height: 34px;
  padding: 0 9px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--muted);
  font: 600 12px/1 "IBM Plex Mono", monospace;
  cursor: pointer;
  transition: background-color 160ms ease, color 160ms ease, transform 120ms ease;
}

.language-switch button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--surface);
}

.language-switch button:active {
  transform: scale(0.96);
}

.page {
  padding-top: clamp(56px, 9vw, 108px);
  padding-bottom: clamp(72px, 10vw, 124px);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(330px, 0.92fr);
  gap: clamp(48px, 9vw, 112px);
  align-items: center;
  min-height: min(680px, calc(100dvh - 176px));
}

.eyebrow,
.section-label,
.meta-line {
  margin: 0;
  color: var(--muted);
  font: 500 12px/1.4 "IBM Plex Mono", monospace;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero h1,
.legal-hero h1 {
  max-width: 780px;
  margin: 20px 0 24px;
  font-size: clamp(48px, 7.2vw, 92px);
  font-weight: 570;
  letter-spacing: -0.065em;
  line-height: 0.96;
  text-wrap: balance;
}

.hero-copy {
  max-width: 590px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(18px, 2.1vw, 23px);
  line-height: 1.55;
}

.availability {
  display: flex;
  align-items: center;
  gap: 11px;
  width: fit-content;
  margin-top: 34px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
}

.availability::before {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--coral);
  box-shadow: 0 0 0 7px var(--coral-soft);
  content: "";
}

.thread-instrument {
  position: relative;
  min-height: 520px;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--violet) 22%, var(--faint));
  border-radius: 42px;
  background:
    linear-gradient(var(--surface), var(--surface)) padding-box,
    radial-gradient(circle at 46% 35%, var(--violet-soft), transparent 62%) border-box;
  box-shadow: 0 32px 88px rgb(50 47 92 / 12%);
}

.thread-instrument::after {
  position: absolute;
  inset: 18px;
  border: 1px solid color-mix(in srgb, var(--faint) 72%, transparent);
  border-radius: 30px;
  pointer-events: none;
  content: "";
}

.thread-instrument svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.thread-shadow,
.thread-main,
.thread-tail {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.thread-shadow {
  stroke: var(--violet-soft);
  stroke-width: 24;
}

.thread-main {
  stroke: var(--violet);
  stroke-width: 13;
  stroke-dasharray: 760;
  stroke-dashoffset: 760;
  animation: draw-thread 1.2s cubic-bezier(.16, 1, .3, 1) 140ms forwards;
}

.thread-tail {
  stroke: var(--faint);
  stroke-width: 5;
  stroke-dasharray: 4 15;
}

.node {
  fill: var(--surface);
  stroke: var(--violet);
  stroke-width: 8;
}

.node-now {
  stroke: var(--coral);
}

.instrument-time {
  position: absolute;
  z-index: 1;
  font: 500 22px/1 "IBM Plex Mono", monospace;
  font-variant-numeric: tabular-nums;
}

.instrument-time small {
  margin-left: 8px;
  color: var(--muted);
  font-size: 11px;
}

.time-one { inset: 17% auto auto 14%; }
.time-two { inset: 43% 11% auto auto; }
.time-three { inset: auto auto 14% 21%; }

.sections {
  margin-top: clamp(100px, 16vw, 180px);
  border-top: 1px solid var(--ink);
}

.feature-row,
.privacy-row {
  display: grid;
  grid-template-columns: minmax(150px, 0.32fr) minmax(0, 0.68fr);
  gap: clamp(28px, 7vw, 100px);
  padding: clamp(38px, 6vw, 70px) 0;
  border-bottom: 1px solid var(--faint);
}

.feature-row h2,
.privacy-row h2,
.legal-section h2 {
  margin: 0;
  font-size: clamp(27px, 3.5vw, 42px);
  font-weight: 560;
  letter-spacing: -0.04em;
  line-height: 1.05;
}

.feature-row p,
.privacy-row p {
  max-width: 680px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
}

.detail-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 42px;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
}

.detail-list li {
  padding: 14px 0;
  border-top: 1px solid var(--faint);
  color: var(--ink);
}

.legal-page {
  max-width: 860px;
}

.legal-hero {
  padding-bottom: clamp(46px, 8vw, 88px);
  border-bottom: 1px solid var(--ink);
}

.legal-hero h1 {
  font-size: clamp(48px, 8vw, 86px);
}

.legal-hero p {
  max-width: 660px;
  margin: 0;
  color: var(--muted);
  font-size: 19px;
}

.legal-section {
  padding: clamp(40px, 7vw, 72px) 0;
  border-bottom: 1px solid var(--faint);
}

.legal-section h2 {
  margin-bottom: 22px;
  font-size: clamp(25px, 3vw, 34px);
}

.legal-section h3 {
  margin: 32px 0 10px;
  font-size: 19px;
  font-weight: 620;
}

.legal-section p,
.legal-section li {
  max-width: 720px;
  color: var(--muted);
}

.legal-section li + li {
  margin-top: 9px;
}

.support-contact {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  margin-top: 12px;
  padding: 0 18px;
  border-radius: 14px;
  background: var(--ink);
  color: var(--surface);
  font-weight: 600;
  text-decoration: none;
  transition: transform 120ms ease, background-color 160ms ease;
}

.support-contact:hover {
  background: var(--violet);
  color: white;
}

.support-contact:active {
  transform: scale(0.98);
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  padding-top: 30px;
  padding-bottom: 38px;
  border-top: 1px solid var(--faint);
  color: var(--muted);
  font-size: 13px;
}

.site-footer p {
  margin: 0;
}

[data-language-panel][hidden] {
  display: none !important;
}

@keyframes draw-thread {
  to { stroke-dashoffset: 0; }
}

@media (prefers-color-scheme: dark) {
  :root {
    --canvas: #0a0c11;
    --surface: #14171e;
    --ink: #f5f6fb;
    --muted: #959cad;
    --faint: #303541;
    --violet: #9e94ff;
    --violet-soft: #302b65;
    --coral: #ff8c80;
    --coral-soft: #542d2f;
    --focus: #bcb5ff;
  }

  .thread-instrument {
    box-shadow: 0 34px 90px rgb(0 0 0 / 32%);
  }
}

@media (max-width: 760px) {
  .site-header {
    grid-template-columns: 1fr;
    gap: 16px;
    padding-top: 18px;
    padding-bottom: 18px;
  }

  .site-nav {
    justify-content: space-between;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .thread-instrument {
    min-height: 460px;
  }

  .feature-row,
  .privacy-row {
    grid-template-columns: 1fr;
  }

  .detail-list {
    grid-template-columns: 1fr;
  }

  .site-footer {
    grid-template-columns: 1fr;
  }
}

@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;
  }
}