/* =============================================================================
   Placidic - option B ("Placid precision")
   A calm, editorial, instrument-grade landing page.
   Palette: sea-glass paper + deep teal-ink, with deep-water dark passages.
   Type:    Fraunces / Noto Serif SC (display) + Hanken Grotesk / Noto Sans SC
            (text) + IBM Plex Mono (instrument labels).
   ========================================================================== */

/* ----- Tokens ------------------------------------------------------------- */
:root {
  --paper:    #eceee9;
  --paper-2:  #e6e9e2;
  --paper-3:  #dde2da;
  --ink:      #14201d;
  --ink-2:    #33433e;
  --ink-3:    #61706a;
  --teal:     #0e5f54;
  --teal-2:   #167367;
  --clay:     #b25e38;
  --deep:     #0e1a17;
  --deep-2:   #14241f;
  --on-deep:    #dbe3dd;
  --on-deep-2:  #8ea39b;
  --line:       rgba(20, 32, 29, 0.14);
  --line-soft:  rgba(20, 32, 29, 0.08);
  --line-deep:  rgba(219, 227, 221, 0.16);

  --font-display: "Fraunces", "Noto Serif SC", Georgia, "Songti SC", serif;
  --font-body:    "Hanken Grotesk", "Noto Sans SC", system-ui, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, "Noto Sans SC", monospace;

  --fs-eyebrow:   clamp(0.7rem, 0.66rem + 0.18vw, 0.78rem);
  --fs-body:      clamp(1rem, 0.97rem + 0.2vw, 1.1rem);
  --fs-lead:      clamp(1.18rem, 1.04rem + 0.55vw, 1.5rem);
  --fs-h3:        clamp(1.3rem, 1.18rem + 0.5vw, 1.6rem);
  --fs-h2:        clamp(2.05rem, 1.5rem + 2.3vw, 3.35rem);
  --fs-statement: clamp(2.35rem, 1.6rem + 3.1vw, 4.3rem);
  --fs-display:   clamp(2.9rem, 1.3rem + 6.9vw, 6.6rem);

  --gutter:    clamp(1.25rem, 0.7rem + 2.2vw, 3rem);
  --section-y: clamp(4.5rem, 3rem + 6vw, 9rem);
  --maxw:      1240px;
  --radius:    4px;
  --ease:      cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ----- Reset / base ------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

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

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3 { line-height: 1.08; font-weight: 460; letter-spacing: -0.01em; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; }
ul, ol { list-style: none; padding: 0; }
em { font-style: italic; }
::selection { background: var(--teal); color: var(--paper); }

/* ----- Scrollbar: thin, teal-ink, restrained ------------------------------ */
html {
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--ink) 32%, transparent) transparent;
}
::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track {
  background: color-mix(in srgb, var(--paper) 70%, var(--paper-3));
}
::-webkit-scrollbar-thumb {
  background: color-mix(in srgb, var(--ink) 28%, transparent);
  border-radius: 100px;
  border: 3px solid transparent;
  background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover {
  background: color-mix(in srgb, var(--teal) 62%, var(--ink));
  background-clip: padding-box;
}

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

/* ----- Atmosphere: ambient glow + film grain ------------------------------ */
.ambient {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(58vw 46vw at 78% -8%, rgba(22, 115, 103, 0.16), transparent 62%),
    radial-gradient(50vw 50vw at 6% 12%, rgba(14, 95, 84, 0.08), transparent 60%);
}
.grain {
  position: fixed;
  inset: 0;
  z-index: 9;
  pointer-events: none;
  opacity: 0.035;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

main, .site-header, .site-footer { position: relative; z-index: 1; }

/* ----- Skip link ---------------------------------------------------------- */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -100px;
  z-index: 100;
  background: var(--ink);
  color: var(--paper);
  padding: 0.6rem 1rem;
  border-radius: var(--radius);
  font: 500 0.9rem/1 var(--font-body);
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 1rem; }

/* ----- Shared type bits --------------------------------------------------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--teal);
  display: inline-flex;
  align-items: center;
  gap: 0.7em;
}
.eyebrow--light { color: var(--on-deep-2); }
.eyebrow__tick {
  width: 2.4rem;
  height: 1px;
  background: currentColor;
  opacity: 0.65;
}

.section { padding-block: var(--section-y); }
.section__head { max-width: 46rem; }
.section__head--center { margin-inline: auto; text-align: center; }
.section__title {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  font-weight: 600;
  margin-top: 1.1rem;
  font-optical-sizing: auto;
}
.section__title--light { color: var(--on-deep); }
.section__intro {
  margin-top: 1.4rem;
  color: var(--ink-2);
  font-size: var(--fs-lead);
  line-height: 1.5;
  text-wrap: pretty;
}
.section__head--center .section__intro { margin-inline: auto; }

/* ----- Icons -------------------------------------------------------------- */
.icon {
  width: 1.25rem;
  height: 1.25rem;
  flex: none;
  fill: currentColor;
}
.icon--sm { width: 1rem; height: 1rem; }

/* ----- Buttons ------------------------------------------------------------ */
.btn {
  --bw: 1px;
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  padding: 0.85em 1.35em;
  border-radius: var(--radius);
  border: var(--bw) solid transparent;
  font: 500 0.98rem/1 var(--font-body);
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: background 0.25s var(--ease), color 0.25s var(--ease),
              border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.btn .icon { transition: transform 0.3s var(--ease); }
.btn:hover .icon { transform: translate(2px, -2px); }
.btn--solid { background: var(--ink); color: var(--paper); }
.btn--solid:hover { background: var(--teal); }
.btn--line { border-color: var(--line); color: var(--ink); }
.btn--line:hover { border-color: var(--teal); color: var(--teal); }
.btn--ghost { color: var(--ink); padding: 0.6em 0.95em; }
.btn--ghost:hover { color: var(--teal); }
.btn--lg { padding: 1.05em 1.7em; font-size: 1.05rem; }
.btn--solid:hover .icon { transform: translate(2px, -2px); }

/* =============================================================================
   Header / navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--paper) 78%, transparent);
  backdrop-filter: saturate(1.3) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease),
              transform 0.4s var(--ease);
}
.site-header[data-hidden] { transform: translateY(-100%); }
.site-header[data-scrolled] {
  border-bottom-color: var(--line);
  background: color-mix(in srgb, var(--paper) 90%, transparent);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  height: 4.6rem;
}
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.32rem;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin-right: auto;
}
.brand__dot {
  width: 0.34rem;
  height: 0.34rem;
  border-radius: 50%;
  background: var(--clay);
  transform: translateY(-0.05rem);
}
.nav__list { display: flex; gap: 0.4rem; }
.nav__list a {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius);
  font-size: 0.96rem;
  color: var(--ink-2);
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}
.nav__list a:hover, .nav__list a[aria-current="true"] {
  color: var(--ink);
  background: color-mix(in srgb, var(--ink) 6%, transparent);
}
.nav__idx {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--teal);
  letter-spacing: 0.04em;
}
.site-header__cta { white-space: nowrap; }

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.8rem;
  height: 2.8rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
}
.nav-toggle__close { display: none; }
.nav-toggle[aria-expanded="true"] .nav-toggle__close { display: block; }
.nav-toggle[aria-expanded="true"] [href="#i-menu"],
.nav-toggle[aria-expanded="true"] > .icon:first-child { display: none; }

.mobile-menu {
  border-top: 1px solid var(--line);
  background: var(--paper);
  padding: var(--gutter);
}
.mobile-menu[hidden] { display: none; }
.mobile-menu__list { display: grid; gap: 0.25rem; }
.mobile-menu__list a {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  padding: 0.9rem 0.4rem;
  font-family: var(--font-display);
  font-size: 1.5rem;
  border-bottom: 1px solid var(--line-soft);
}
.mobile-menu__list span {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--teal);
}

/* =============================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  padding-top: clamp(3rem, 1.5rem + 5vw, 6rem);
  padding-bottom: clamp(8rem, 5rem + 12vw, 14rem);
  overflow: hidden;
}
.hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(17rem, 0.72fr);
  gap: clamp(2rem, 1rem + 4vw, 5.5rem);
  align-items: start;
}
.hero__copy { min-width: 0; }
.hero__eyebrow { margin-bottom: clamp(1.6rem, 1rem + 2vw, 2.8rem); }

.hero__title {
  font-family: var(--font-display);
  font-size: var(--fs-display);
  font-weight: 420;
  font-optical-sizing: auto;
  letter-spacing: -0.025em;
  line-height: 0.98;
  max-width: 16ch;
}
.hero__line { display: block; }
.hero__line:nth-child(2) { color: var(--teal); }
.hero__tagline {
  display: block;
  font-size: clamp(1.3rem, 0.8rem + 2vw, 2.4rem);
  font-weight: 360;
  color: var(--ink-3);
  letter-spacing: -0.01em;
  margin-top: 0.5rem;
}
.hero__tagline em { color: var(--ink-2); }

.hero__lead {
  margin-top: clamp(1.8rem, 1.2rem + 1.6vw, 2.6rem);
  max-width: 31rem;
  font-size: clamp(1rem, 0.94rem + 0.26vw, 1.18rem);
  line-height: 1.66;
  color: color-mix(in srgb, var(--ink-2) 72%, var(--ink-3));
  text-wrap: pretty;
}
.hero__actions {
  margin-top: clamp(2rem, 1.4rem + 1.4vw, 2.8rem);
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}
.hero__chips {
  margin-top: clamp(2.4rem, 1.8rem + 2vw, 3.6rem);
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.hero__chips li {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--ink-2);
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 100px;
  background: color-mix(in srgb, var(--paper) 50%, transparent);
}

.hero__visual {
  position: relative;
  min-width: 0;
  min-height: clamp(23rem, 36vw, 35rem);
  align-self: stretch;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: clamp(-0.8rem, -1vw, -0.2rem) clamp(-2.8rem, -3vw, -1.1rem) 0 0;
  pointer-events: none;
  isolation: isolate;
}
.hero__visual::before {
  content: "";
  position: absolute;
  inset: clamp(0.5rem, 1vw, 1.2rem) clamp(-0.8rem, -1vw, -0.2rem) clamp(0.2rem, 1vw, 0.8rem) clamp(1rem, 2vw, 2.2rem);
  border-radius: 48% 42% 50% 44%;
  background:
    radial-gradient(circle at 66% 39%, rgba(178, 94, 56, 0.18), transparent 23%),
    radial-gradient(ellipse at 58% 57%, rgba(22, 115, 103, 0.24), transparent 65%);
  filter: blur(16px);
  opacity: 0.86;
  transform: rotate(-3deg);
}
.cli {
  position: relative;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: clamp(0.76rem, 0.68rem + 0.34vw, 0.92rem);
  line-height: 2.05;
  letter-spacing: 0.015em;
  color: var(--ink-2);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0, #000 13%, #000 82%, transparent 100%);
          mask-image: linear-gradient(to bottom, transparent 0, #000 13%, #000 82%, transparent 100%);
}
.cli__line {
  display: grid;
  grid-template-columns: 1.2em 9.4em auto;
  column-gap: 0.55em;
  align-items: baseline;
  white-space: nowrap;
  animation: cli-in 0.55s var(--ease) both;
  animation-delay: calc(0.3s + var(--ci, 0) * 0.26s);
}
.cli__mark {
  color: color-mix(in srgb, var(--teal-2) 82%, var(--ink-3));
  justify-self: start;
}
.cli__mark--prompt { color: var(--teal); font-weight: 500; }
.cli__mark--accent { color: var(--teal); }
.cli__mark--ok { color: var(--teal); }
.cli__cmd { grid-column: 2 / -1; color: var(--ink); }
.cli__key { color: var(--ink-2); }
.cli__key--ok {
  grid-column: 2 / -1;
  color: var(--teal);
  letter-spacing: 0.04em;
}
.cli__val { color: color-mix(in srgb, var(--teal-2) 70%, var(--ink-3)); }
.cli__line--caret { margin-top: 0.15rem; }
.cli__caret {
  color: var(--clay);
  font-weight: 500;
  animation: cli-blink 1.6s var(--ease) infinite;
  animation-delay: calc(0.3s + var(--ci, 0) * 0.26s + 0.2s);
}
@keyframes cli-in {
  from { opacity: 0; transform: translateY(5px); }
  to   { opacity: 1; transform: none; }
}
@keyframes cli-blink {
  0%, 45% { opacity: 1; }
  72%     { opacity: 0.12; }
  100%    { opacity: 1; }
}

.hero__wave {
  position: absolute;
  left: 0;
  right: 0;
  bottom: clamp(2.5rem, 1rem + 5vw, 5rem);
  height: clamp(120px, 22vw, 240px);
  z-index: 1;
  pointer-events: none;
}
.hero__wave svg {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 240%;
  height: 100%;
}
.hero__wave .wave-back { animation: drift 30s linear infinite; }
.hero__wave .wave-front { animation: drift 20s linear infinite; }
@keyframes drift { to { transform: translateX(-33.333%); } }

.hero__baseline {
  position: absolute;
  left: 0;
  right: 0;
  bottom: clamp(1.4rem, 0.6rem + 2vw, 2.4rem);
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--ink-3);
}
.hero__ruler {
  flex: 1;
  height: 10px;
  background-image: repeating-linear-gradient(
    to right, var(--line) 0 1px, transparent 1px 28px);
  -webkit-mask-image: linear-gradient(to right, transparent, #000 12%, #000 88%, transparent);
          mask-image: linear-gradient(to right, transparent, #000 12%, #000 88%, transparent);
}
.hero__coord { white-space: nowrap; }

.hero__sidelabel {
  position: absolute;
  right: clamp(0.6rem, 0.2rem + 1vw, 1.4rem);
  top: 46%;
  z-index: 2;
  transform: rotate(180deg);
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.32em;
  color: var(--ink-3);
  opacity: 0.7;
}

/* =============================================================================
   Philosophy
   ========================================================================== */
.philosophy { border-top: 1px solid var(--line-soft); }
.philosophy__grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 1rem + 4vw, 5rem);
  align-items: start;
}
.statement {
  font-family: var(--font-display);
  font-size: var(--fs-statement);
  font-weight: 420;
  font-optical-sizing: auto;
  letter-spacing: -0.02em;
  margin-top: 1.4rem;
}
.statement em { color: var(--teal); }
.philosophy__body { position: relative; padding-top: 0.6rem; }
.philosophy__body p {
  font-size: var(--fs-lead);
  line-height: 1.55;
  color: var(--ink-2);
  text-wrap: pretty;
}
.philosophy__body p + p { margin-top: 1.3rem; }
.deco-icon {
  width: clamp(2.6rem, 2rem + 2vw, 3.6rem);
  height: clamp(2.6rem, 2rem + 2vw, 3.6rem);
  color: var(--teal);
  fill: currentColor;
  margin-bottom: 1.6rem;
  opacity: 0.9;
}

/* =============================================================================
   Pillars
   ========================================================================== */
.pillars { border-top: 1px solid var(--line-soft); }
.pillars__grid {
  margin-top: clamp(2.6rem, 1.8rem + 2.6vw, 4rem);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}
.pillar {
  position: relative;
  background: var(--paper);
  padding: clamp(1.6rem, 1.1rem + 1.6vw, 2.4rem);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: background 0.3s var(--ease), transform 0.3s var(--ease);
}
.pillar:hover { background: var(--paper-2); }
.pillar__no {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--ink-3);
}
.pillar__icon {
  width: clamp(2.4rem, 1.8rem + 2vw, 3.2rem);
  height: clamp(2.4rem, 1.8rem + 2vw, 3.2rem);
  color: var(--teal);
  fill: currentColor;
  transition: transform 0.4s var(--ease);
}
.pillar:hover .pillar__icon { transform: translateY(-3px); }
.pillar__title {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: 600;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.pillar__en {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
}
.pillar__text { color: var(--ink-2); font-size: 0.98rem; line-height: 1.58; }

/* =============================================================================
   Method (deep-water dark passage)
   ========================================================================== */
.method {
  position: relative;
  background: var(--deep);
  color: var(--on-deep);
  border-radius: clamp(12px, 2vw, 22px);
  margin-inline: clamp(0px, 1vw, 14px);
  overflow: hidden;
}
.method::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60vw 40vw at 50% -10%, rgba(22, 115, 103, 0.22), transparent 60%);
  pointer-events: none;
}
.method > .shell { position: relative; }
.method__list {
  margin-top: clamp(2.6rem, 1.8rem + 2.6vw, 4rem);
  max-width: 52rem;
  margin-inline: auto;
}
.method__step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(1.2rem, 0.6rem + 2vw, 2.6rem);
  align-items: baseline;
  padding-block: clamp(1.4rem, 1rem + 1.4vw, 2.1rem);
  border-top: 1px solid var(--line-deep);
}
.method__step:last-child { border-bottom: 1px solid var(--line-deep); }
.method__no {
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 1rem + 1.4vw, 2rem);
  color: var(--teal-2);
  font-weight: 500;
}
.method__title {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: 600;
  color: var(--on-deep);
  margin-bottom: 0.5rem;
}
.method__body p { color: var(--on-deep-2); font-size: var(--fs-body); line-height: 1.55; max-width: 36rem; }

/* =============================================================================
   Editions
   ========================================================================== */
.editions { border-top: 1px solid var(--line-soft); }
.editions__grid {
  margin-top: clamp(2.6rem, 1.8rem + 2.6vw, 4rem);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1rem, 0.4rem + 1.6vw, 1.8rem);
  align-items: stretch;
}
.edition {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: clamp(1.8rem, 1.2rem + 2vw, 2.8rem);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) * 2);
  background: color-mix(in srgb, var(--paper) 40%, transparent);
}
.edition--pro {
  background: var(--deep);
  color: var(--on-deep);
  border-color: transparent;
}
.edition__badge {
  position: absolute;
  top: clamp(1.8rem, 1.2rem + 2vw, 2.8rem);
  right: clamp(1.8rem, 1.2rem + 2vw, 2.8rem);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--deep);
  background: var(--teal-2);
  padding: 0.3rem 0.6rem;
  border-radius: 100px;
}
.edition__name {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: 600;
}
.edition__for { color: var(--ink-2); margin-top: 0.5rem; font-size: 0.98rem; }
.edition--pro .edition__for { color: var(--on-deep-2); }
.edition__price {
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
  padding-bottom: 1.4rem;
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}
.edition--pro .edition__price { border-color: var(--line-deep); }
.edition__price-label {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--ink-2);
}
.edition__currency {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--teal-2);
  transform: translateY(-0.4rem);
}
.edition__amount {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 2rem + 2vw, 3.6rem);
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1;
}
.edition__price-note {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--on-deep-2);
  margin-top: 0.4rem;
}
.edition__list { display: grid; gap: 0.8rem; margin-top: -0.2rem; }
.edition__list li { display: flex; align-items: center; gap: 0.7rem; font-size: 0.98rem; }
.edition__list .icon { color: var(--teal-2); }
.edition--pro .edition__list .icon { color: var(--teal-2); }
.edition__cta { margin-top: auto; align-self: flex-start; }
.edition--pro .btn--solid { background: var(--paper); color: var(--deep); }
.edition--pro .btn--solid:hover { background: var(--teal-2); color: var(--deep); }

/* =============================================================================
   Contact
   ========================================================================== */
.contact { border-top: 1px solid var(--line-soft); text-align: center; }
.contact__inner { display: flex; flex-direction: column; align-items: center; gap: 1.4rem; }
.contact__title {
  font-family: var(--font-display);
  font-size: var(--fs-statement);
  font-weight: 420;
  font-optical-sizing: auto;
  letter-spacing: -0.02em;
  margin-top: 1rem;
}
.contact__title em { color: var(--teal); }
.contact__text { max-width: 38rem; color: var(--ink-2); font-size: var(--fs-lead); line-height: 1.55; }
.contact .btn { margin-top: 0.6rem; }

/* =============================================================================
   Footer
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--line);
  padding-top: clamp(3rem, 2rem + 3vw, 5rem);
  padding-bottom: 2.5rem;
}
.site-footer__inner {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: clamp(2rem, 1rem + 4vw, 5rem);
  align-items: start;
}
.footer-wordmark {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 1.6rem + 3vw, 4rem);
  font-weight: 460;
  letter-spacing: -0.02em;
  display: block;
}
.footer-note {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--ink-3);
  margin-top: 0.6rem;
  display: block;
}
.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.footer-col { display: flex; flex-direction: column; gap: 0.7rem; }
.footer-col__title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 0.3rem;
}
.footer-col a { color: var(--ink-2); font-size: 0.96rem; transition: color 0.2s var(--ease); width: fit-content; }
.footer-col a:hover { color: var(--teal); }
.footer-col__muted { font-size: 0.78rem; color: var(--ink-3); }

.site-footer__bottom {
  margin-top: clamp(2.5rem, 1.5rem + 3vw, 4rem);
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.5rem;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--ink-3);
}
.footer-sign { margin-left: auto; font-family: var(--font-display); font-size: 0.95rem; letter-spacing: 0; }

/* =============================================================================
   Reveal motion
   ========================================================================== */
/* =============================================================================
   Reveal motion: "written in" wipe
   ========================================================================== */
/* Each [data-reveal] block is wiped in from the left, like a line being written
   by hand, ordered top-to-bottom via --i. Only the right edge animates (100% ->
   -1rem); top/right/bottom rest at -1rem so focus-ring outlines are never
   clipped at rest, and the text's final position never moves (no layout shift).
   The hero title writes line by line via its per-line --i. */
.js [data-reveal] {
  clip-path: inset(-1rem 100% -1rem -1rem);
  transition: clip-path 0.62s var(--ease);
  transition-delay: calc(var(--i, 0) * 0.16s);
}
.js [data-reveal].is-visible { clip-path: inset(-1rem -1rem -1rem -1rem); }

/* =============================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1080px) {
  .pillars__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .nav, .site-header__cta { display: none; }
  .nav-toggle { display: inline-flex; }
  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { display: none; }
  .philosophy__grid { grid-template-columns: 1fr; gap: 2rem; }
  .editions__grid { grid-template-columns: 1fr; }
  .site-footer__inner { grid-template-columns: 1fr; }
  .hero__sidelabel { display: none; }
}
@media (max-width: 540px) {
  .pillars__grid { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: 1fr 1fr; }
  .hero__title { letter-spacing: -0.015em; }
  .site-footer__bottom { flex-direction: column; align-items: flex-start; }
  .footer-sign { margin-left: 0; }
}

/* ----- Focus + reduced motion -------------------------------------------- */
:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
  border-radius: 2px;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js [data-reveal] { clip-path: none; transition: none; }
  .hero__wave svg,
  .hero__wave .wave-back,
  .hero__wave .wave-front { animation: none; }
  .hero__visual::before,
  .cli__line,
  .cli__caret { animation: none; opacity: 1; transform: none; }
  .site-header { transition: border-color 0.3s var(--ease), background 0.3s var(--ease); }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; }
}