:root {
  --paper: #f2ece1;
  --paper-2: #e9e1d3;
  --panel: #faf6ee;
  --ink: #17140f;
  --ink-soft: #4a443b;
  --ink-mute: #857c6e;
  --line: rgba(23,20,15,.14);
  --line-2: rgba(23,20,15,.30);
  --vermilion: #e3402a;
  --vermilion-deep: #c22e1c;
  --ease: cubic-bezier(.22,.61,.36,1);
  --ease-io: cubic-bezier(.7,0,.3,1);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: "Space Grotesk", system-ui, sans-serif;
  background: var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}
::selection { background: var(--vermilion); color: var(--paper); }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: "Fraunces", Georgia, serif; font-weight: 900; line-height: .98; }

/* ---- paper grain ---- */
.grain {
  position: fixed; inset: 0; z-index: 9; pointer-events: none;
  opacity: .5; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
}

/* ---- scrollbar ---- */
::-webkit-scrollbar { width: 11px; }
::-webkit-scrollbar-track { background: var(--paper-2); }
::-webkit-scrollbar-thumb { background: var(--ink); border: 3px solid var(--paper-2); border-radius: 20px; }
::-webkit-scrollbar-thumb:hover { background: var(--vermilion); }

/* =================== TOPBAR =================== */
.topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px clamp(18px, 4vw, 44px);
  mix-blend-mode: multiply;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2px;
  width: 16px; height: 16px;
}
.brand-mark span {
  background: var(--vermilion); border-radius: 50%;
  animation: markpulse 3.2s var(--ease-io) infinite;
}
.brand-mark span:nth-child(2){ animation-delay: .25s; background: var(--ink); }
.brand-mark span:nth-child(3){ animation-delay: .5s; background: var(--ink); }
.brand-mark span:nth-child(4){ animation-delay: .75s; background: var(--vermilion); }
.brand-mark.small { width: 13px; height: 13px; }
@keyframes markpulse { 0%,100%{ transform: scale(1); opacity:1;} 50%{ transform: scale(.6); opacity:.55;} }
.brand-word { font-weight: 700; letter-spacing: .14em; font-size: .92rem; }
.brand-thin { font-weight: 300; color: var(--ink-soft); }
.topnav { display: flex; align-items: center; gap: 10px; font-size: .74rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-soft); }
.nav-sep { color: var(--line-2); }
.nav-emph { color: var(--vermilion); font-weight: 500; }
.topbuy {
  display: flex; align-items: baseline; gap: 9px;
  border: 1px solid var(--line-2); border-radius: 40px;
  padding: 7px 15px; transition: all .4s var(--ease);
}
.topbuy:hover { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.buy-label { font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; }
.buy-price { font-weight: 700; }

/* =================== HERO =================== */
.hero {
  position: relative;
  height: 100svh; min-height: 640px;
  overflow: hidden;
}
#scene { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.hero-poster {
  position: absolute; inset: 0; z-index: 1;
  display: none;
}

.hero-overlay {
  position: absolute; z-index: 3;
  left: clamp(18px, 4vw, 44px);
  bottom: clamp(90px, 14vh, 140px);
  max-width: min(430px, 82vw);
  mix-blend-mode: normal;
}
.hero-kicker {
  display: flex; align-items: center; gap: 9px;
  font-size: .8rem; letter-spacing: .04em; color: var(--ink-soft);
  margin-bottom: 18px;
}
.hero-kicker em { font-family: "Fraunces", serif; font-style: italic; color: var(--ink); margin-right: -.05em; }
.kick-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--vermilion); flex: none; animation: markpulse 2.4s var(--ease-io) infinite; }
.hero-h1 {
  font-size: clamp(3.4rem, 9vw, 6.4rem);
  letter-spacing: -.02em;
  margin-bottom: 20px;
}
.h1-line { display: block; }
.h1-accent { color: var(--vermilion); font-style: italic; font-weight: 900; }
.hero-lede {
  font-size: clamp(.94rem, 1.4vw, 1.06rem);
  color: var(--ink-soft); line-height: 1.62;
  max-width: 40ch;
}

/* ---- HUD ---- */
.specimen-hud { position: absolute; inset: 0; z-index: 2; pointer-events: none; }
.hud-block {
  position: absolute; display: flex; flex-direction: column; gap: 2px;
  font-size: .68rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink-mute); mix-blend-mode: multiply;
}
.hud-block .hud-cap { opacity: .8; }
.hud-tl { top: clamp(78px, 12vh, 108px); left: clamp(18px, 4vw, 44px); }
.hud-tr { top: clamp(78px, 12vh, 108px); right: clamp(18px, 4vw, 44px); text-align: right; align-items: flex-end; }
.hud-bl { bottom: clamp(56px, 8vh, 76px); left: clamp(18px, 4vw, 44px); }
.hud-br { bottom: clamp(56px, 8vh, 76px); right: clamp(18px, 4vw, 44px); text-align: right; align-items: flex-end; }
.hud-glyph { font-family: "Fraunces", serif; font-size: 2.2rem; font-weight: 900; color: var(--ink); letter-spacing: 0; line-height: 1; text-transform: none; }
.hud-val { font-weight: 500; color: var(--ink-soft); }
.hud-val.hud-fig { font-variant-numeric: tabular-nums; }

/* ---- controls ---- */
.specimen-controls {
  position: absolute; z-index: 4;
  right: clamp(18px, 4vw, 44px);
  bottom: clamp(90px, 14vh, 140px);
  display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end;
  max-width: 220px;
}
.glyph-btn {
  font-family: "Fraunces", serif; font-weight: 900;
  font-size: 1.35rem; line-height: 1;
  width: 52px; height: 52px;
  display: grid; place-items: center;
  background: transparent; color: var(--ink);
  border: 1px solid var(--line-2); border-radius: 12px;
  cursor: pointer; transition: all .35s var(--ease);
}
.glyph-btn:hover { background: var(--ink); color: var(--paper); transform: translateY(-2px); }
.glyph-btn.is-active { background: var(--vermilion); border-color: var(--vermilion); color: var(--paper); }
.glyph-btn--wide {
  width: auto; height: 52px; font-family: "Space Grotesk", sans-serif;
  font-size: .74rem; font-weight: 500; letter-spacing: .1em; text-transform: uppercase;
  padding: 0 16px; gap: 8px; display: flex;
}
.auto-tick { width: 8px; height: 8px; border-radius: 50%; background: var(--vermilion); flex: none; transition: background .3s; }
.glyph-btn--wide[aria-pressed="false"] .auto-tick { background: var(--line-2); }
.glyph-btn--wide[aria-pressed="false"] { opacity: .7; }

.hero-hint {
  position: absolute; z-index: 4;
  bottom: clamp(22px, 4vh, 34px); left: 50%; transform: translateX(-50%);
  font-size: .72rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink-mute); text-align: center; white-space: nowrap;
}

/* =================== SHEET =================== */
.sheet {
  position: relative; z-index: 5;
  background: var(--paper);
  border-top: 1px solid var(--line-2);
  padding: clamp(60px, 9vw, 120px) clamp(18px, 5vw, 80px);
}
.sheet-idx {
  font-family: "Space Grotesk", sans-serif; font-weight: 500;
  font-size: .72rem; letter-spacing: .16em; color: var(--vermilion);
  font-variant-numeric: tabular-nums;
}
.sheet-head { display: grid; grid-template-columns: 1.1fr 1fr; gap: clamp(20px,4vw,60px); align-items: end; margin-bottom: clamp(50px, 7vw, 90px); }
.sheet-title h2 { font-size: clamp(2.6rem, 6vw, 5rem); letter-spacing: -.02em; margin-top: 10px; }
.sheet-sub { font-size: clamp(.95rem, 1.4vw, 1.1rem); color: var(--ink-soft); max-width: 42ch; padding-bottom: 10px; }

/* ---- waterfall ---- */
.waterfall { border-top: 1px solid var(--line); margin-bottom: clamp(50px,7vw,90px); }
.wf-row {
  display: grid; grid-template-columns: 130px 1fr; align-items: baseline; gap: 20px;
  border-bottom: 1px solid var(--line);
  padding: clamp(10px, 1.6vw, 22px) 0;
  transition: background .4s var(--ease), padding-left .4s var(--ease);
}
.wf-row:hover { background: var(--panel); padding-left: 14px; }
.wf-meta { font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-mute); font-variant-numeric: tabular-nums; }
.wf-word { font-family: "Fraunces", serif; font-size: clamp(2.2rem, 7vw, 5.6rem); line-height: .95; letter-spacing: -.01em; transition: color .4s var(--ease); }
.wf-row:hover .wf-word { color: var(--vermilion); }

/* ---- charset ---- */
.charset { margin-bottom: clamp(50px,7vw,90px); }
.charset-head { display: flex; align-items: baseline; gap: 14px; border-top: 1px solid var(--line); padding-top: 16px; margin-bottom: 26px; }
.charset-head h3 { font-family: "Space Grotesk", sans-serif; font-weight: 500; font-size: .82rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-soft); }
.glyphgrid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
  border-left: 1px solid var(--line); border-top: 1px solid var(--line);
}
.gcell {
  aspect-ratio: 1; display: grid; place-items: center;
  font-family: "Fraunces", serif; font-weight: 900;
  font-size: clamp(1.4rem, 2.6vw, 2rem); color: var(--ink);
  border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
  transition: all .3s var(--ease); cursor: default;
}
.gcell:hover { background: var(--ink); color: var(--paper); }
.gcell.gcell--accent:hover { background: var(--vermilion); }

/* ---- specimens ---- */
.specimens { display: grid; grid-template-columns: 1.4fr 1fr; gap: clamp(30px, 5vw, 70px); }
.spec-para { font-family: "Fraunces", serif; font-weight: 300; font-size: clamp(1.15rem, 1.9vw, 1.5rem); line-height: 1.55; color: var(--ink); max-width: 44ch; }
.spec-para::first-letter { font-weight: 900; color: var(--vermilion); }
.spec-col--sizes .size-line { font-family: "Fraunces", serif; font-weight: 900; line-height: 1; letter-spacing: -.02em; margin-bottom: 14px; }
.spec-col--sizes .size-line:nth-child(3) { color: var(--vermilion); font-style: italic; }

/* =================== LICENSE =================== */
.license {
  position: relative; z-index: 5;
  background: var(--ink); color: var(--paper);
  padding: clamp(60px, 9vw, 120px) clamp(18px, 5vw, 80px);
}
.license ::selection { background: var(--vermilion); color: var(--ink); }
.lic-head { display: flex; align-items: baseline; gap: 16px; margin-bottom: clamp(40px, 6vw, 72px); }
.lic-head h2 { font-size: clamp(2.6rem, 6vw, 5rem); letter-spacing: -.02em; color: var(--paper); }
.lic-head .sheet-idx { color: var(--vermilion); }
.lic-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(16px, 2vw, 26px); }
.lic-card {
  position: relative;
  border: 1px solid rgba(242,236,225,.18); border-radius: 4px;
  padding: clamp(24px, 2.6vw, 38px);
  display: flex; flex-direction: column; gap: 18px;
  transition: border-color .4s var(--ease), transform .4s var(--ease), background .4s var(--ease);
}
.lic-card:hover { border-color: var(--vermilion); transform: translateY(-4px); }
.lic-card--feature { background: rgba(242,236,225,.04); border-color: rgba(242,236,225,.3); }
.lic-flag {
  position: absolute; top: -11px; left: clamp(24px, 2.6vw, 38px);
  background: var(--vermilion); color: var(--paper);
  font-size: .66rem; letter-spacing: .14em; text-transform: uppercase; font-weight: 500;
  padding: 4px 11px; border-radius: 30px;
}
.lic-card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; border-bottom: 1px solid rgba(242,236,225,.16); padding-bottom: 16px; }
.lic-card-head h3 { font-family: "Fraunces", serif; font-weight: 900; font-size: clamp(1.6rem, 2.6vw, 2.2rem); color: var(--paper); }
.lic-price { font-family: "Space Grotesk", sans-serif; font-weight: 500; font-size: .92rem; color: var(--vermilion); white-space: nowrap; }
.lic-card p { font-size: .9rem; color: rgba(242,236,225,.7); line-height: 1.6; }
.lic-list { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.lic-list li { font-size: .82rem; color: rgba(242,236,225,.82); padding-left: 18px; position: relative; }
.lic-list li::before { content: ""; position: absolute; left: 0; top: .5em; width: 6px; height: 6px; border-radius: 50%; background: var(--vermilion); }
.lic-cta {
  margin-top: auto;
  font-family: "Space Grotesk", sans-serif; font-weight: 500;
  font-size: .78rem; letter-spacing: .1em; text-transform: uppercase;
  background: transparent; color: var(--paper);
  border: 1px solid rgba(242,236,225,.4); border-radius: 40px;
  padding: 12px; cursor: pointer; transition: all .35s var(--ease);
}
.lic-cta:hover { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.lic-cta--filled { background: var(--vermilion); border-color: var(--vermilion); }
.lic-cta--filled:hover { background: var(--paper); color: var(--ink); }

/* =================== FOOTER =================== */
.foot {
  position: relative; z-index: 5;
  background: var(--paper); color: var(--ink-soft);
  border-top: 1px solid var(--line-2);
  padding: clamp(28px, 4vw, 44px) clamp(18px, 5vw, 80px);
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  flex-wrap: wrap;
  font-size: .82rem;
}
.foot-mark { display: flex; align-items: center; gap: 11px; }
.foot-links { display: flex; align-items: center; gap: clamp(16px, 3vw, 34px); flex-wrap: wrap; }
.foot-guide { color: var(--vermilion); font-weight: 500; transition: opacity .3s; }
.foot-guide:hover { opacity: .65; }
.foot-credit a { color: var(--ink); border-bottom: 1px solid var(--line-2); transition: border-color .3s; }
.foot-credit a:hover { border-color: var(--vermilion); }

/* =================== FOCUS =================== */
:focus-visible { outline: 2px solid var(--vermilion); outline-offset: 3px; border-radius: 3px; }

/* =================== RESPONSIVE =================== */
@media (max-width: 860px) {
  .topnav { display: none; }
  .sheet-head { grid-template-columns: 1fr; }
  .specimens { grid-template-columns: 1fr; }
  .lic-grid { grid-template-columns: 1fr; }
  .hud-tr, .hud-br { display: none; }
  .specimen-controls { bottom: auto; top: clamp(70px, 11vh, 100px); max-width: 168px; }
  .hero-overlay { max-width: 90vw; }
}
@media (max-width: 700px) {
  /* glyph lives in the upper half; copy gets a legible paper scrim below */
  #scene { height: 60%; top: 0; }
  .specimen-controls {
    top: auto; bottom: auto; right: auto;
    left: 18px; right: 18px;
    top: clamp(58px, 9vh, 88px);
    max-width: none; justify-content: flex-start;
    gap: 7px;
  }
  .specimen-controls .glyph-btn { width: 42px; height: 42px; font-size: 1.05rem; }
  .specimen-controls .glyph-btn--wide { width: auto; height: 42px; margin-left: auto; padding: 0 12px; font-size: .66rem; }
  .hero-overlay {
    bottom: clamp(26px, 5vh, 44px);
    left: 18px; right: 18px; max-width: none;
    background: linear-gradient(180deg, rgba(242,236,225,0) 0%, var(--paper) 14%);
    padding: 26px 4px 4px;
  }
  .hero-h1 { font-size: clamp(3rem, 15vw, 4.4rem); }
  .hud-tl { top: auto; bottom: clamp(78px, 12vh, 110px); left: 18px; }
  .hud-bl { display: none; }
  .hero-hint { display: none; }
}
@media (max-width: 500px) {
  .hero-hint { font-size: .64rem; letter-spacing: .06em; }
  .glyph-btn { width: 44px; height: 44px; font-size: 1.1rem; }
  .glyph-btn--wide { width: auto; height: 44px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; animation-iteration-count: 1 !important; }
  html { scroll-behavior: auto; }
}