:root {
  --paper: #f1ece4;
  --paper-deep: #e6ddd1;
  --ink-900: #151515;
  --ink-700: #39342f;
  --ink-500: #6c655d;
  --ink-400: #8c857d;
  --dark-900: #131313;
  --dark-800: #1b1b1b;
  --dark-700: #262626;
  --mist: rgba(255, 255, 255, 0.08);
  --line: rgba(21, 21, 21, 0.12);
  --line-strong: rgba(21, 21, 21, 0.22);
  --accent: #7b4d30;
  --accent-soft: #cfb39d;
  --accent-fog: rgba(123, 77, 48, 0.08);
  --surface: rgba(255, 255, 255, 0.5);
  --shadow-soft: 0 24px 60px rgba(21, 21, 21, 0.06);
  --radius-sm: 12px;
  --radius-md: 24px;
  --max-width: 1320px;
  --transition-fast: 180ms ease;
  --transition-slow: 500ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: "Instrument Sans", "Segoe UI", sans-serif;
  color: var(--ink-900);
  background:
    radial-gradient(
      circle at 82% 18%,
      rgba(255, 255, 255, 0.44),
      transparent 24%
    ),
    radial-gradient(
      circle at top left,
      rgba(123, 77, 48, 0.1),
      transparent 24%
    ),
    radial-gradient(
      circle at 20% 72%,
      rgba(123, 77, 48, 0.05),
      transparent 28%
    ),
    linear-gradient(180deg, #f7f2eb 0%, #f2ece4 50%, #eee7de 100%);
  line-height: 1.6;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(21, 21, 21, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21, 21, 21, 0.03) 1px, transparent 1px);
  background-size: 84px 84px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.35), transparent 85%);
  opacity: 0.22;
}

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

button,
input,
select {
  font: inherit;
}

.skip-link {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2000;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--ink-900);
  color: #fff;
  opacity: 0;
  pointer-events: none;
  transform: translateY(calc(-100% - 24px));
  transition:
    transform var(--transition-fast),
    opacity var(--transition-fast);
}

.skip-link:focus {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

:focus-visible {
  outline: 3px solid rgba(123, 77, 48, 0.25);
  outline-offset: 4px;
}

.site-shell {
  position: relative;
  overflow-x: clip;
}

.container {
  width: min(calc(100% - 36px), var(--max-width));
  margin: 0 auto;
}

.masthead {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(16px);
  background: rgba(241, 236, 228, 0.72);
  border-bottom: 1px solid rgba(21, 21, 21, 0.08);
}

.masthead-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 78px;
}

.masthead-nav-shell {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex: 1;
  min-width: 0;
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid rgba(21, 21, 21, 0.14);
  background:
    radial-gradient(
      circle at 35% 35%,
      rgba(255, 255, 255, 0.7),
      transparent 34%
    ),
    linear-gradient(145deg, rgba(255, 255, 255, 0.8), rgba(230, 221, 209, 0.75));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
}

.brand-copy strong,
.brand-copy span,
.demo-pill,
.section-kicker,
.eyebrow,
.hero-overline,
.path-index,
.scenario-range span,
.hero-facts dt {
  font-family: "IBM Plex Mono", monospace;
}

.brand-copy strong {
  display: block;
  font-size: 0.94rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand-copy span {
  display: block;
  margin-top: 2px;
  font-size: 0.74rem;
  color: var(--ink-500);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.masthead-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  flex-wrap: nowrap;
  flex: 1 1 auto;
  min-width: 0;
}

.masthead-item {
  position: relative;
}

.masthead-dropdown::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  height: 28px;
}

/* ── Dropdown (desktop) ── */
.masthead-dropdown-menu {
  position: absolute;
  top: calc(100% - 2px);
  left: 0;
  min-width: 260px;
  max-height: 70vh;
  overflow-y: auto;
  display: none;
  padding: 8px;
  border: 1px solid rgba(21, 21, 21, 0.08);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 24px 60px rgba(21, 21, 21, 0.14);
}

.masthead-dropdown:hover .masthead-dropdown-menu,
.masthead-dropdown:focus-within .masthead-dropdown-menu {
  display: block;
}

.masthead-nav a,
.utility-link,
.demo-pill {
  padding: 8px 11px;
  border-radius: 999px;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.masthead-nav a,
.utility-link {
  color: var(--ink-700);
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast);
}

.masthead-nav a:hover,
.masthead-nav a:focus-visible,
.utility-link:hover,
.utility-link:focus-visible {
  color: var(--ink-900);
  background: rgba(255, 255, 255, 0.62);
}

.masthead-nav a.is-active {
  color: var(--ink-900);
  background: rgba(255, 255, 255, 0.7);
}

/* Hamburger — hidden on desktop */
.nav-toggle-icon {
  display: none;
}

.masthead-dropdown-menu a {
  padding: 10px 12px;
  border-radius: 12px;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: none;
}

.masthead-utility {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: nowrap;
  justify-content: flex-end;
  flex: 0 0 auto;
}

/* 中等宽度下隐藏快捷链接（导航已有 SIZING/TOOLS 入口），避免换行破坏排版 */
@media (max-width: 1560px) {
  .masthead-utility {
    display: none;
  }
}

.demo-pill {
  border: 1px solid rgba(123, 77, 48, 0.2);
  background: rgba(123, 77, 48, 0.08);
  color: var(--accent);
}

.hero-stage {
  position: relative;
  padding: 28px 0 44px;
}

.hero-stage::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: min(56vw, 640px);
  pointer-events: none;
  background:
    radial-gradient(
      circle at 14% 18%,
      rgba(255, 255, 255, 0.5),
      transparent 24%
    ),
    radial-gradient(circle at 72% 30%, rgba(123, 77, 48, 0.08), transparent 26%);
  opacity: 0.9;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 420px);
  gap: clamp(24px, 4vw, 64px);
  align-items: start;
}

.hero-copy {
  position: relative;
  min-height: calc(100svh - 170px);
  padding: 34px 0 24px;
  display: grid;
  align-content: start;
}

.hero-copy::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: min(34vw, 420px);
  height: 1px;
  background: linear-gradient(90deg, rgba(21, 21, 21, 0.16), transparent 82%);
}

.hero-brand {
  margin-top: 26px;
  font-family: "Bodoni Moda", Georgia, serif;
  font-size: clamp(1.5rem, 2.5vw, 2.2rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
}

.eyebrow,
.hero-overline,
.section-kicker {
  margin: 0;
  color: var(--ink-500);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero-overline {
  max-width: 36ch;
  margin-top: 20px;
}

.hero-title,
.section-intro h2,
.principle-body h3,
.scenario-label h3,
.path-intro h2,
.footer-copy h2,
.dock-intro h2 {
  margin: 0;
  font-family: "Bodoni Moda", Georgia, serif;
  font-weight: 600;
  text-wrap: balance;
}

.hero-title {
  max-width: 10.5ch;
  margin-top: 10px;
  font-size: clamp(3.8rem, 8vw, 7.8rem);
  line-height: 0.88;
  letter-spacing: -0.06em;
}

.hero-title span {
  display: block;
  margin-top: 10px;
  max-width: 10.5ch;
  color: rgba(21, 21, 21, 0.5);
}

.hero-summary {
  max-width: 34ch;
  margin: 18px 0 0;
  font-size: clamp(1.04rem, 1.65vw, 1.18rem);
  color: var(--ink-700);
}

.hero-poster {
  width: min(100%, 620px);
  margin-top: 22px;
  padding: 18px 20px 20px;
  background:
    linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.76),
      rgba(255, 255, 255, 0.34)
    ),
    linear-gradient(160deg, rgba(123, 77, 48, 0.08), rgba(255, 255, 255, 0));
  border: 1px solid rgba(21, 21, 21, 0.08);
  box-shadow: var(--shadow-soft);
}

.poster-kicker {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-500);
}

.poster-line,
.poster-note {
  margin: 0;
}

.poster-line {
  margin-top: 12px;
  max-width: 18ch;
  font-family: "Bodoni Moda", Georgia, serif;
  font-size: clamp(1.5rem, 2.6vw, 2.45rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.poster-line--muted {
  max-width: 24ch;
  color: rgba(21, 21, 21, 0.6);
}

.poster-note {
  max-width: 40ch;
  margin-top: 14px;
  color: var(--ink-700);
}

.hero-actions,
.form-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-actions {
  margin-top: 24px;
}

.button-primary,
.button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  transition:
    transform var(--transition-fast),
    background-color var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.button-primary {
  background: var(--ink-900);
  color: #fff;
  box-shadow: 0 14px 30px rgba(21, 21, 21, 0.12);
}

.button-primary:hover,
.button-primary:focus-visible,
.button-secondary:hover,
.button-secondary:focus-visible,
.path-row:hover,
.path-row:focus-visible,
.scenario-link:hover,
.scenario-link:focus-visible {
  transform: translateY(-1px);
}

.button-secondary {
  border-color: var(--line);
  color: var(--ink-900);
  background: rgba(255, 255, 255, 0.52);
}

.button-secondary--quiet {
  background: transparent;
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 28px 0 0;
}

.hero-facts div {
  padding-top: 14px;
  border-top: 1px solid var(--line-strong);
}

.hero-facts dt {
  margin: 0 0 10px;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--ink-500);
  text-transform: uppercase;
}

.hero-facts dd {
  margin: 0;
  color: var(--ink-700);
  font-size: 0.98rem;
}

.control-dock {
  position: relative;
  align-self: stretch;
  border-radius: 28px;
  background:
    radial-gradient(
      circle at top right,
      rgba(207, 179, 157, 0.16),
      transparent 28%
    ),
    linear-gradient(180deg, rgba(36, 36, 36, 0.98), rgba(19, 19, 19, 0.98));
}

.dock-shell {
  position: sticky;
  top: 96px;
  display: grid;
  gap: 24px;
  padding: 34px 28px 30px;
  border-radius: 28px;
  background:
    radial-gradient(
      circle at top right,
      rgba(207, 179, 157, 0.16),
      transparent 28%
    ),
    linear-gradient(180deg, rgba(36, 36, 36, 0.98), rgba(19, 19, 19, 0.98));
  color: rgba(255, 255, 255, 0.92);
  box-shadow: 0 30px 80px rgba(21, 21, 21, 0.2);
}

.dock-intro,
.sizing-form,
.result-shell {
  position: relative;
  z-index: 1;
}

.dock-intro h2 {
  margin-top: 12px;
  font-size: clamp(2rem, 3vw, 2.7rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.dock-intro p {
  margin: 16px 0 0;
  color: rgba(255, 255, 255, 0.7);
}

.control-dock .section-kicker {
  color: rgba(255, 255, 255, 0.56);
}

.sizing-form,
.result-shell {
  position: relative;
  padding: 22px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.field {
  display: grid;
  gap: 8px;
}

.field--wide {
  grid-column: 1 / -1;
}

.field span {
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.92rem;
  font-weight: 600;
}

.field input,
.field select {
  width: 100%;
  min-height: 52px;
  padding: 0 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.96);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background-color var(--transition-fast);
}

.field input::placeholder {
  color: rgba(255, 255, 255, 0.38);
}

.field input:focus,
.field select:focus {
  border-color: rgba(207, 179, 157, 0.54);
  box-shadow: 0 0 0 4px rgba(207, 179, 157, 0.12);
  background: rgba(255, 255, 255, 0.1);
}

.control-dock .button-primary {
  background: #fff;
  color: var(--dark-900);
  box-shadow: none;
}

.control-dock .button-secondary {
  border-color: rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.88);
}

.form-actions {
  margin-top: 18px;
}

.result-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.tier-chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(207, 179, 157, 0.12);
  border: 1px solid rgba(207, 179, 157, 0.14);
  color: #f1ddd0;
  font-size: 0.84rem;
  font-weight: 600;
}

.result-band {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.result-value {
  font-family: "Bodoni Moda", Georgia, serif;
  font-size: clamp(3.2rem, 7vw, 5.6rem);
  line-height: 0.9;
  letter-spacing: -0.06em;
}

.result-unit {
  color: rgba(255, 255, 255, 0.46);
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.result-summary {
  margin: 18px 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 1.02rem;
}

.result-list {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.result-list li {
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.72);
}

.result-note {
  margin: 18px 0 0;
  color: rgba(255, 255, 255, 0.48);
  font-size: 0.92rem;
}

.principles-section,
.ledger-section,
.path-section,
.footer {
  padding: 42px 0;
}

.principles-section {
  padding-top: 24px;
}

.principles-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: clamp(24px, 5vw, 72px);
  align-items: start;
}

.principles-intro {
  display: grid;
  gap: 14px;
}

.principles-intro h2 {
  margin: 0;
  font-family: "Bodoni Moda", Georgia, serif;
  font-size: clamp(2.7rem, 5vw, 4.6rem);
  line-height: 0.93;
  letter-spacing: -0.05em;
}

.principles-intro p {
  margin: 0;
  max-width: 40ch;
  color: var(--ink-700);
  font-size: 1.04rem;
}

.principles-proof {
  display: grid;
  gap: 8px;
  width: min(100%, 420px);
  margin-top: 10px;
  padding: 18px 20px;
  background: rgba(255, 255, 255, 0.52);
  border: 1px solid rgba(21, 21, 21, 0.08);
}

.principles-proof span {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-500);
}

.principles-proof strong {
  font-size: 1.06rem;
  line-height: 1.4;
}

.principles-stack {
  display: grid;
  gap: 14px;
}

.principle-item {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  gap: 18px;
  padding: 18px 0;
  border-top: 1px solid rgba(21, 21, 21, 0.12);
}

.section-intro {
  display: grid;
  gap: 12px;
  max-width: 70ch;
  margin-bottom: 28px;
}

.section-intro--split {
  grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
  max-width: none;
  align-items: end;
}

.section-intro h2,
.path-intro h2,
.footer-copy h2 {
  font-size: clamp(2.5rem, 5vw, 4.3rem);
  line-height: 0.94;
  letter-spacing: -0.05em;
}

.section-intro p,
.path-intro p,
.footer-copy p {
  margin: 0;
  color: var(--ink-700);
  font-size: 1.02rem;
}

.principle-list {
  border-top: 1px solid var(--line-strong);
}

.principle-row {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr) minmax(220px, 280px);
  gap: 26px;
  align-items: start;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.principle-index {
  color: var(--accent);
  font-family: "Bodoni Moda", Georgia, serif;
  font-size: 2rem;
  line-height: 1;
}

.principle-body h3,
.scenario-label h3 {
  font-size: clamp(1.65rem, 2.4vw, 2.5rem);
  line-height: 1;
  letter-spacing: -0.04em;
}

.principle-body p,
.principle-note {
  margin: 14px 0 0;
  color: var(--ink-700);
}

.principle-note {
  font-size: 0.98rem;
  color: var(--ink-500);
}

.scenario-ledger {
  border-top: 1px solid var(--line-strong);
}

.scenario-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px minmax(0, 1.2fr) 200px;
  gap: 22px;
  align-items: start;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.scenario-label span {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--ink-500);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.scenario-range span {
  display: block;
  color: var(--ink-500);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.scenario-range strong {
  display: block;
  margin-top: 8px;
  font-size: 1.06rem;
}

.scenario-copy {
  margin: 0;
  color: var(--ink-700);
}

.scenario-link {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  min-height: 48px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.42);
  color: var(--ink-900);
  font-weight: 600;
  transition:
    transform var(--transition-fast),
    background-color var(--transition-fast),
    border-color var(--transition-fast);
}

.scenario-link:hover,
.scenario-link:focus-visible {
  background: rgba(255, 255, 255, 0.72);
  border-color: var(--line-strong);
}

.path-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(28px, 5vw, 76px);
  align-items: start;
}

.path-list {
  border-top: 1px solid var(--line-strong);
}

.path-row {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 18px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  transition:
    transform var(--transition-fast),
    color var(--transition-fast);
}

.path-row strong {
  display: block;
  font-size: 1.08rem;
}

.path-row p {
  margin: 8px 0 0;
  color: var(--ink-700);
}

.path-index {
  color: var(--ink-500);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.footer {
  padding-bottom: 60px;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) 280px;
  gap: 28px;
  align-items: start;
  padding-top: 24px;
  border-top: 1px solid var(--line-strong);
}

.footer-links {
  display: grid;
  gap: 10px;
}

.footer-links a {
  color: var(--ink-700);
  transition: color var(--transition-fast);
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--ink-900);
}

.reveal {
  animation: fade-up var(--transition-slow) both;
}

.reveal-delay-1 {
  animation-delay: 90ms;
}

.reveal-delay-2 {
  animation-delay: 170ms;
}

.reveal-delay-3 {
  animation-delay: 250ms;
}

.reveal-delay-4 {
  animation-delay: 330ms;
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(22px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}

@media (max-width: 1120px) {
  .hero-grid,
  .principles-grid,
  .path-grid,
  .footer-grid,
  .section-intro--split {
    grid-template-columns: 1fr;
  }

  .dock-shell {
    position: static;
    padding: 24px 22px 24px;
    border-top: 1px solid var(--line-strong);
    padding-top: 26px;
  }

  .hero-facts {
    grid-template-columns: 1fr;
  }

  .hero-poster,
  .hero-facts {
    display: none;
  }

  .principle-row,
  .scenario-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

@media (max-width: 1480px) {
  .masthead-inner {
    align-items: flex-start;
  }

  .masthead-nav-shell {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    justify-items: end;
    gap: 8px;
  }

  .masthead-nav {
    justify-content: flex-end;
  }

  .masthead-nav a,
  .utility-link,
  .demo-pill {
    padding: 7px 9px;
    font-size: 0.68rem;
  }

  .masthead-utility {
    gap: 6px;
    justify-content: flex-end;
  }
}

@media (max-width: 1180px) {
  .masthead-inner {
    min-height: unset;
    padding: 14px 0 16px;
    flex-direction: column;
    align-items: stretch;
  }

  .masthead-nav-shell {
    width: 100%;
    justify-content: space-between;
    gap: 10px 14px;
    flex-wrap: wrap;
  }

  .masthead-nav {
    gap: 4px;
    justify-content: flex-start;
  }

  .masthead-nav a,
  .utility-link,
  .demo-pill {
    padding: 8px 10px;
    font-size: 0.72rem;
  }

  .demo-pill {
    display: none;
  }
}

@media (min-width: 981px) and (max-width: 1120px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(300px, 360px);
    gap: 28px;
  }

  .hero-copy {
    min-height: auto;
    padding-top: 24px;
  }

  .hero-title {
    max-width: 9.6ch;
    font-size: clamp(3.3rem, 6vw, 5.6rem);
  }

  .dock-shell {
    position: sticky;
    top: 146px;
    padding: 24px 22px 24px;
    border-top: none;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(calc(100% - 24px), var(--max-width));
  }

  .masthead {
    backdrop-filter: none;
  }

  .masthead-inner {
    min-height: unset;
    padding: 14px 0;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
  }

  .brand-lockup {
    flex: 1;
  }

  /* Hamburger */
  .nav-toggle-icon {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    cursor: pointer;
    border: none;
    background: none;
  }

  .nav-toggle-bar {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--ink-900);
    border-radius: 2px;
  }

  /* Overlay */
  .masthead-nav-shell {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(241, 236, 228, 0.98);
    padding: 90px 28px 40px;
    overflow-y: auto;
  }

  html.nav-open .masthead-nav-shell {
    display: block;
  }

  /* Nav list */
  .masthead-nav {
    display: flex;
    flex-direction: column;
    gap: 0;
    max-width: 420px;
    margin: 0 auto;
  }

  .masthead-nav > a {
    display: block;
    padding: 16px 0;
    font-family: "Bodoni Moda", Georgia, serif;
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--ink-900);
    border-bottom: 1px solid rgba(21, 21, 21, 0.06);
    text-decoration: none;
  }

  /* Tools accordion */
  .masthead-dropdown {
    border-bottom: 1px solid rgba(21, 21, 21, 0.06);
  }

  .masthead-dropdown > a {
    display: flex;
    align-items: center;
    padding: 16px 0;
    font-family: "Bodoni Moda", Georgia, serif;
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--ink-900);
    text-decoration: none;
    cursor: pointer;
  }

  .masthead-dropdown > a::after {
    content: "+";
    margin-left: auto;
    font-size: 1.8rem;
    font-weight: 300;
    opacity: 0.4;
  }

  .masthead-dropdown.open > a::after {
    content: "−";
  }

  .masthead-dropdown-menu {
    position: static;
    display: none;
    padding: 0 0 12px 20px;
  }

  .masthead-dropdown.open .masthead-dropdown-menu {
    display: block;
  }

  .masthead-dropdown-menu a {
    display: block;
    padding: 10px 0;
    font-family: "Instrument Sans", sans-serif;
    font-size: 1.02rem;
    color: rgba(21, 21, 21, 0.6);
    text-decoration: none;
  }

  .masthead-utility {
    display: none;
  }

  .hero-stage {
    padding-top: 24px;
  }

  .hero-copy {
    min-height: auto;
    padding-top: 18px;
  }

  .hero-title {
    max-width: 10ch;
    font-size: clamp(2.6rem, 10vw, 4.1rem);
  }

  .hero-overline,
  .hero-summary {
    max-width: none;
  }

  .hero-summary {
    font-size: 0.98rem;
  }

  .hero-poster {
    padding: 18px 18px 20px;
  }

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

  .field--wide {
    grid-column: auto;
  }

  .hero-actions,
  .form-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .button-primary,
  .button-secondary,
  .scenario-link {
    width: 100%;
  }

  .path-row {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

/* ── Product recommendation cards (dark dock variant) ── */
.rec-panel {
  margin-top: 18px;
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.06);
}

.rec-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 10px;
  padding: 0 2px;
}

.rec-label {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: #fff;
  font-weight: 600;
}

.rec-note {
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.55);
}

.rec-grid {
  display: grid;
  gap: 8px;
}

.rec-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.94);
  text-decoration: none;
  color: #161616;
  transition: transform 160ms ease, border-color 160ms ease;
}

.rec-card:hover {
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.3);
}

.rec-rank {
  flex: 0 0 20px;
  font-family: "Bodoni Moda", Georgia, serif;
  font-size: 1.05rem;
  line-height: 1;
  color: #7b4d30;
  font-weight: 600;
  text-align: center;
}

.rec-main {
  flex: 1;
  min-width: 0;
  display: grid;
  gap: 3px;
}

.rec-brand {
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.rec-model {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.68rem;
  line-height: 1.25;
  color: rgba(22, 22, 22, 0.55);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.rec-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 2px 8px;
  font-size: 0.68rem;
  line-height: 1.3;
  color: rgba(22, 22, 22, 0.65);
}

.rec-specs .rec-badge {
  padding: 1px 7px;
  border-radius: 999px;
  background: rgba(123, 77, 48, 0.12);
  color: #7b4d30;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.rec-score {
  flex: 0 0 auto;
  font-size: 0.85rem;
  font-weight: 700;
  color: #7b4d30;
  text-align: right;
  line-height: 1.2;
}

.rec-score small {
  display: block;
  font-size: 0.62rem;
  font-weight: 400;
  color: rgba(22, 22, 22, 0.45);
}

.rec-cta {
  flex: 0 0 auto;
  font-size: 0.8rem;
  font-weight: 600;
  color: #7b4d30;
  opacity: 0.9;
}

.rec-disclosure {
  margin: 10px 0 0;
  padding-top: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.66rem;
  line-height: 1.45;
  color: rgba(255, 255, 255, 0.38);
  letter-spacing: 0.01em;
}