:root {
  --ink-0: #0a090c;
  --ink-1: #100e14;
  --ink-2: #16141b;

  --paper:   #f2ede6;
  --paper-2: #a8a19a;
  --paper-3: #8d867e;

  --ember:      #ff5a36;
  --ember-dim:  #d64524;
  --ember-wash: rgba(255, 90, 54, .10);

  --rule:        rgba(242, 237, 230, .09);
  --rule-strong: rgba(242, 237, 230, .18);

  --r: 2px;

  --sans: 'Geist', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: 'Geist Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --ease: cubic-bezier(.22, .61, .36, 1);

  --gut: clamp(20px, 5vw, 60px);
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

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

body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--paper);
  background: var(--ink-0);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

img { display: block; max-width: 100%; height: auto; }
svg { max-width: 100%; }
a { color: inherit; }
::selection { background: var(--ember); color: #fff; }
:focus-visible { outline: 2px solid var(--ember); outline-offset: 3px; }

.shell {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding-inline: var(--gut);
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--paper);
  color: var(--ink-0);
  padding: 12px 18px;
  font-size: 14px;
  font-weight: 500;
}
.skip:focus { left: 12px; top: 12px; }

.mono {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--paper-3);
}

.nav { border-bottom: 1px solid var(--rule); flex: none; }
.nav-in {
  height: 62px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.wordmark {
  font-size: 16px;
  font-weight: 500;
  letter-spacing: -.02em;
  text-decoration: none;
  white-space: nowrap;
}
.wordmark span { color: var(--ember); }

.nav-right { display: flex; align-items: center; gap: clamp(16px, 3vw, 26px); }

.nav-link {
  font-size: 14.5px;
  color: var(--paper-2);
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s var(--ease);
}
.nav-link:hover { color: var(--paper); }

.who {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--paper-3);
  white-space: nowrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: var(--r);
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background .2s var(--ease), border-color .2s var(--ease),
              color .2s var(--ease), transform .12s var(--ease);
}
.btn:active { transform: translateY(1px); }

.btn-solid { background: var(--paper); color: var(--ink-0); }
.btn-solid:hover { background: #fff; }

.btn-line { background: transparent; color: var(--paper); border-color: var(--rule-strong); }
.btn-line:hover { border-color: var(--paper-2); background: rgba(242, 237, 230, .04); }

.btn-sm { min-height: 38px; padding: 0 16px; font-size: 14px; }

.btn-arrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--rule-strong);
  padding-bottom: 4px;
  transition: border-color .2s var(--ease), gap .2s var(--ease);
}
.btn-arrow:hover { border-color: var(--ember); gap: 15px; }
.btn-arrow span { color: var(--ember); }

.door {
  flex: 1;
  display: flex;
  align-items: center;
  padding-block: clamp(44px, 7vw, 76px);
}

.door-grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(38px, 6vw, 92px);
  align-items: start;
}

.say {
  font-size: clamp(21px, 2.3vw, 27px);
  line-height: 1.4;
  letter-spacing: -.02em;
  font-weight: 400;
  max-width: 21ch;
}

.say-sub {
  margin-top: 18px;
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--paper-2);
  max-width: 34ch;
}

.door-do {
  margin-top: 30px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.door-fig {
  margin-top: 42px;
  padding-top: 26px;
  border-top: 1px solid var(--rule);
}

.stage {
  display: block;
  width: 100%;
  max-width: 440px;
  height: auto;
}

.fig-tag {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: .14em;
  fill: var(--paper-3);
}

.fig-note {
  margin-top: 16px;
  max-width: 42ch;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--paper-3);
}

.what { display: grid; gap: 22px; }

.what-row {
  display: grid;
  grid-template-columns: 18px 96px minmax(0, 1fr);
  column-gap: 16px;
  align-items: baseline;
}

.what-mark {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: var(--paper-3);
  stroke-width: 1.2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transform: translateY(3px);
}

.what dt {
  font-size: 14px;
  font-weight: 500;
  color: var(--paper);
  letter-spacing: -.01em;
}

.what dd {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--paper-2);
  max-width: 56ch;
}

.foot { flex: none; border-top: 1px solid var(--rule); padding-block: 22px; }
.foot-in {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}
.foot-nav { display: flex; gap: clamp(14px, 2.4vw, 24px); flex-wrap: wrap; }
.foot-nav a {
  font-size: 13.5px;
  color: var(--paper-2);
  text-decoration: none;
  transition: color .2s var(--ease);
}
.foot-nav a:hover { color: var(--ember); }

.auth {
  flex: 1;
  display: grid;
  align-content: center;
  padding-block: 48px;
}
.auth-in { width: 100%; max-width: 384px; margin: 0 auto; }
.auth-in > * + * { margin-top: 22px; }

.auth-head h1 {
  font-size: 25px;
  font-weight: 500;
  letter-spacing: -.025em;
  line-height: 1.2;
}
.auth-head p { color: var(--paper-2); font-size: 15px; margin-top: 8px; }

.field { display: grid; gap: 7px; }
.field label { font-size: 13px; font-weight: 500; color: var(--paper-2); }
.field input {
  width: 100%;
  min-height: 46px;
  padding: 0 14px;
  background: var(--ink-1);
  border: 1px solid var(--rule-strong);
  border-radius: var(--r);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  transition: border-color .2s var(--ease);
}
.field input::placeholder { color: var(--paper-3); }
.field input:focus { outline: none; border-color: var(--ember); }
.field .hint { font-size: 12.5px; color: var(--paper-3); }
.field .err { font-size: 12.5px; color: #ff8f6f; }

.notice {
  border-left: 2px solid var(--ember);
  background: var(--ember-wash);
  padding: 12px 14px;
  font-size: 14px;
  line-height: 1.55;
  border-radius: 0 var(--r) var(--r) 0;
}
.notice-bad { border-left-color: #ff6b52; background: rgba(255, 107, 82, .09); color: #ffb2a0; }
.notice-ok  { border-left-color: #62d28d; background: rgba(98, 210, 141, .09); color: #93e0b3; }

.auth-foot { font-size: 14px; color: var(--paper-3); }
.auth-foot a { color: var(--paper); text-decoration: none; border-bottom: 1px solid var(--rule-strong); }
.auth-foot a:hover { border-bottom-color: var(--ember); }

@media (max-width: 820px) {
  .door { align-items: flex-start; padding-block: 34px 48px; }
  .door-grid { grid-template-columns: 1fr; gap: 38px; }
  .say { max-width: none; }
  .say-sub { max-width: none; }
}

@media (max-width: 560px) {
  .what-row { grid-template-columns: 18px minmax(0, 1fr); column-gap: 12px; row-gap: 4px; }
  .what-mark { grid-row: 1; grid-column: 1; }
  .what dt { grid-row: 1; grid-column: 2; }
  .what dd { grid-column: 2; }
  .what { gap: 24px; }
  .door-fig { margin-top: 34px; padding-top: 22px; }
  .door-do { width: 100%; }
  .door-do .btn { flex: 1 1 auto; }
  .foot-in { flex-direction: column; align-items: flex-start; gap: 14px; }

  .nav-link, .foot-nav a, .auth-foot a, .field a {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
  }
  .wordmark { display: inline-flex; align-items: center; min-height: 44px; }
  .btn-sm { min-height: 44px; padding: 0 18px; }
  .btn-arrow { min-height: 44px; align-items: center; }
  .nav-in { height: auto; padding-block: 6px; }
  .foot-nav { gap: 2px 20px; }
}

@media (max-width: 380px) {
  .nav-right { gap: 14px; }
  .nav-link[data-optional] { display: none; }
}

@supports (padding: max(0px)) {
  .shell {
    padding-left: max(var(--gut), env(safe-area-inset-left));
    padding-right: max(var(--gut), env(safe-area-inset-right));
  }
  .foot { padding-bottom: max(22px, env(safe-area-inset-bottom)); }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}