:root {
  --bg: #e9dfcf;
  --bg-deep: #211d1a;
  --surface: rgba(252, 248, 241, 0.82);
  --surface-strong: rgba(248, 242, 232, 0.96);
  --surface-ink: #26201d;
  --line: rgba(61, 45, 30, 0.18);
  --line-strong: rgba(61, 45, 30, 0.32);
  --ink: #211b17;
  --ink-soft: rgba(33, 27, 23, 0.72);
  --ink-faint: rgba(33, 27, 23, 0.48);
  --gold: #8f6a3b;
  --gold-soft: rgba(143, 106, 59, 0.16);
  --shadow-soft: 0 18px 50px rgba(40, 27, 13, 0.08);
  --shadow-deep: 0 24px 80px rgba(28, 21, 14, 0.14);
  --radius-lg: 32px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --max-width: 1320px;
  --shell-gutter: 32px;
  --masthead-offset: 18px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  color: var(--ink);
  font: 16px/1.7 "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  background:
    radial-gradient(circle at 15% 10%, rgba(159, 124, 77, 0.12), transparent 26%),
    radial-gradient(circle at 82% 14%, rgba(41, 73, 74, 0.14), transparent 24%),
    radial-gradient(circle at 50% 120%, rgba(83, 61, 36, 0.18), transparent 42%),
    linear-gradient(180deg, #f5eee2 0%, #e8dcc8 46%, #e1d3be 100%);
  position: relative;
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
}

body::before {
  background:
    radial-gradient(circle at var(--spot-x, 65%) var(--spot-y, 18%), rgba(255, 248, 235, 0.55), transparent 26%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.28), transparent 34%);
  mix-blend-mode: screen;
  opacity: 0.55;
}

body::after {
  opacity: 0.2;
  background-image:
    linear-gradient(rgba(63, 44, 22, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(63, 44, 22, 0.04) 1px, transparent 1px);
  background-size: 100% 36px, 36px 100%;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55), transparent 90%);
}

a {
  color: inherit;
}

button,
input,
select {
  font: inherit;
}

input,
select,
button {
  min-width: 0;
}

.page-shell {
  position: relative;
  isolation: isolate;
}

.masthead {
  width: min(calc(100% - var(--shell-gutter)), var(--max-width));
  margin: var(--masthead-offset) auto 0;
  padding: 14px 18px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  position: sticky;
  top: var(--masthead-offset);
  z-index: 20;
  border: 1px solid rgba(255, 255, 255, 0.46);
  border-radius: 999px;
  background: rgba(247, 241, 231, 0.74);
  backdrop-filter: blur(18px) saturate(140%);
  box-shadow: 0 12px 36px rgba(48, 33, 17, 0.08);
}

.masthead__brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  min-width: 0;
}

.masthead__brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 72px;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--surface-ink);
  color: #f8f0e4;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.masthead__brand-text {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.masthead__brand-text strong,
.section-head h2,
.hero h1,
.feature-card__title,
.path-card__title,
.folio__title,
.closing h2 {
  font-family: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
}

.masthead__brand-text strong {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.masthead__brand-text em {
  font-style: normal;
  color: var(--ink-faint);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.masthead__nav {
  display: flex;
  justify-content: center;
  gap: 26px;
  font-size: 0.94rem;
  color: var(--ink-soft);
}

.masthead__nav a {
  text-decoration: none;
  position: relative;
}

.masthead__nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.28s ease;
}

.masthead__nav a:hover::after,
.masthead__nav a:focus-visible::after {
  transform: scaleX(1);
}

.masthead__meta {
  font-size: 0.85rem;
  color: var(--ink-soft);
  white-space: nowrap;
}

main {
  width: min(calc(100% - var(--shell-gutter)), var(--max-width));
  margin: 0 auto;
  padding-bottom: 72px;
}

main > section[id] {
  scroll-margin-top: 120px;
}

.hero {
  position: relative;
  min-height: calc(100svh - 40px);
  padding: 108px 0 56px;
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(320px, 0.82fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: end;
}

.hero__backdrop {
  position: absolute;
  inset: 32px 0 0;
  border-radius: 40px;
  background:
    linear-gradient(130deg, rgba(255, 248, 238, 0.9), rgba(241, 231, 214, 0.48) 44%, rgba(44, 36, 29, 0.9) 100%),
    radial-gradient(circle at 18% 26%, rgba(255, 255, 255, 0.5), transparent 22%),
    radial-gradient(circle at 84% 18%, rgba(159, 124, 77, 0.22), transparent 20%);
  box-shadow: var(--shadow-deep);
  overflow: hidden;
}

.hero__backdrop::before,
.hero__backdrop::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.hero__backdrop::before {
  inset: 0;
  background:
    linear-gradient(115deg, transparent 0 52%, rgba(255, 245, 229, 0.14) 58%, transparent 66%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.16), transparent 38%);
}

.hero__backdrop::after {
  inset: 32px 34px 34px auto;
  width: min(30vw, 360px);
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(255, 248, 238, 0.14), rgba(255, 248, 238, 0.02)),
    repeating-linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.04) 0 1px,
      transparent 1px 18px
    );
  opacity: 0.8;
}

.hero__copy,
.hero__feature {
  position: relative;
  z-index: 1;
}

.hero__copy {
  padding: 28px clamp(10px, 2vw, 28px) 24px;
}

.hero__eyebrow,
.section-head__eyebrow,
.closing__eyebrow {
  margin: 0 0 16px;
  color: var(--gold);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  max-width: 10ch;
  font-size: clamp(3rem, 6vw, 6.3rem);
  line-height: 1.02;
  font-weight: 800;
  letter-spacing: -0.05em;
  text-wrap: balance;
}

.hero h1 span {
  display: block;
  color: rgba(255, 248, 236, 0.94);
}

.hero__lede {
  max-width: 40rem;
  margin: 24px 0 0;
  color: rgba(33, 27, 23, 0.76);
  font-size: 1.05rem;
}

.hero__subnote {
  margin: 14px 0 0;
  color: var(--ink-faint);
  font-size: 0.92rem;
}

.hero__actions,
.closing__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 999px;
  padding: 13px 22px;
  cursor: pointer;
  text-decoration: none;
  transition:
    transform 0.24s ease,
    box-shadow 0.24s ease,
    background 0.24s ease,
    color 0.24s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button--primary {
  background: var(--surface-ink);
  color: #f7efe3;
  box-shadow: 0 10px 24px rgba(26, 21, 16, 0.18);
}

.button--primary:hover,
.button--primary:focus-visible {
  box-shadow: 0 16px 32px rgba(26, 21, 16, 0.24);
}

.button--ghost {
  background: rgba(255, 248, 238, 0.42);
  color: var(--ink);
  border: 1px solid rgba(57, 40, 24, 0.14);
  backdrop-filter: blur(14px);
}

.feature-card {
  min-height: 520px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 248, 238, 0.92), rgba(247, 238, 226, 0.82)),
    repeating-linear-gradient(
      180deg,
      rgba(117, 90, 57, 0.04) 0 1px,
      transparent 1px 24px
    );
  border: 1px solid rgba(255, 255, 255, 0.42);
  box-shadow: var(--shadow-deep);
  position: relative;
  overflow: hidden;
  border-top: 4px solid var(--feature-accent, var(--gold));
}

.feature-card::before {
  content: "";
  position: absolute;
  inset: 18px;
  border: 1px solid rgba(50, 39, 25, 0.08);
  border-radius: 24px;
  pointer-events: none;
}

.feature-card__top,
.feature-card__bottom {
  position: relative;
  z-index: 1;
}

.feature-card__label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(30, 24, 20, 0.06);
  color: var(--ink-soft);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

.feature-card__index {
  margin: 18px 0 0;
  color: var(--ink-faint);
  letter-spacing: 0.22em;
  font-size: 0.82rem;
}

.feature-card__title {
  margin: 10px 0 0;
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 1.12;
  letter-spacing: -0.04em;
}

.feature-card__summary {
  margin: 18px 0 0;
  color: var(--ink-soft);
  max-width: 22rem;
}

.feature-card__meta {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.feature-card__tag {
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.52);
  border: 1px solid rgba(59, 45, 28, 0.12);
  font-size: 0.82rem;
  color: var(--ink-soft);
}

.feature-card__route {
  font-size: 0.94rem;
  color: var(--feature-accent, var(--gold));
}

.feature-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button--secondary {
  background: transparent;
  border: 1px solid rgba(57, 40, 24, 0.18);
  color: var(--ink-soft);
}

.quick-access {
  margin-top: 30px;
  padding: 22px 22px 6px;
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  background:
    linear-gradient(180deg, rgba(252, 247, 239, 0.92), rgba(244, 236, 223, 0.78)),
    radial-gradient(circle at 100% 0%, rgba(255, 255, 255, 0.34), transparent 38%);
  box-shadow: var(--shadow-soft);
}

.quick-access__intro {
  display: grid;
  gap: 8px;
}

.quick-access__eyebrow {
  margin: 0;
  color: var(--gold);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.quick-access__intro h2 {
  margin: 0;
  font-family: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  line-height: 1.14;
  letter-spacing: -0.04em;
}

.quick-access__desc {
  margin: 0;
  color: var(--ink-soft);
}

.quick-access__actions {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.quick-access__pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  padding: 12px 16px;
  border-radius: 18px;
  border: 1px solid rgba(63, 46, 28, 0.12);
  background: rgba(255, 255, 255, 0.54);
  text-decoration: none;
  text-align: center;
  color: var(--ink-soft);
  transition:
    transform 0.2s ease,
    border-color 0.2s ease,
    background 0.2s ease,
    color 0.2s ease;
}

.quick-access__pill strong {
  margin-left: 0.25rem;
  color: var(--ink);
  font-weight: 700;
}

.quick-access__pill:hover,
.quick-access__pill:focus-visible {
  transform: translateY(-2px);
  color: var(--ink);
  border-color: rgba(63, 46, 28, 0.22);
}

.quick-access__pill--primary {
  background: var(--surface-ink);
  color: #f8f0e4;
  border-color: transparent;
  box-shadow: 0 12px 24px rgba(26, 21, 16, 0.14);
}

.quick-access__pill--primary strong {
  color: currentColor;
}

.overview,
.section-block,
.closing {
  position: relative;
}

.quick-access {
  display: none;
}

.method__grid,
.paths__grid,
.spine-rail,
.folio-grid {
  content-visibility: auto;
}

.method__grid,
.paths__grid,
.folio-grid {
  contain-intrinsic-size: 720px;
}

.spine-rail {
  contain-intrinsic-size: 320px;
}

.overview {
  margin-top: 26px;
  padding: 28px 30px;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, 0.9fr);
  gap: 24px;
  align-items: center;
  border-top: 1px solid rgba(64, 46, 27, 0.12);
}

.overview__quote {
  max-width: 42rem;
  font-size: clamp(1.35rem, 2.2vw, 2rem);
  line-height: 1.5;
  color: rgba(33, 27, 23, 0.84);
}

.overview__quote p {
  margin: 0;
}

.overview__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.overview__stats article {
  padding: 20px 18px;
  border-radius: var(--radius-md);
  background: rgba(248, 241, 231, 0.66);
  border: 1px solid rgba(58, 42, 28, 0.08);
  box-shadow: var(--shadow-soft);
}

.overview__stat-num {
  display: block;
  font-size: clamp(1.9rem, 3vw, 2.6rem);
  font-family: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  line-height: 1;
}

.overview__stat-label {
  display: block;
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.method__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.method-card {
  position: relative;
  min-height: 220px;
  padding: 24px;
  border-radius: 26px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  background:
    linear-gradient(180deg, rgba(253, 249, 242, 0.9), rgba(245, 237, 225, 0.74)),
    radial-gradient(circle at 100% 0%, rgba(255, 255, 255, 0.3), transparent 38%);
  box-shadow: var(--shadow-soft);
}

.method-card__index {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--gold);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
}

.method-card h3 {
  margin: 0;
  font-family: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  font-size: 1.42rem;
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.method-card p {
  margin: 14px 0 0;
  color: var(--ink-soft);
}

.section-block {
  margin-top: 88px;
}

.section-head {
  display: grid;
  gap: 10px;
  max-width: 52rem;
  margin-bottom: 30px;
}

.section-head h2,
.closing h2 {
  margin: 0;
  font-size: clamp(2rem, 3.8vw, 3.6rem);
  line-height: 1.12;
  letter-spacing: -0.04em;
  text-wrap: balance;
}

.section-head__desc,
.closing__text {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1rem;
}

.paths__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.paths__grid--loading {
  pointer-events: none;
}

.path-card {
  position: relative;
  display: grid;
  gap: 18px;
  align-content: space-between;
  min-height: 260px;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(253, 250, 245, 0.88), rgba(245, 237, 225, 0.72)),
    radial-gradient(circle at 100% 0%, rgba(255, 255, 255, 0.34), transparent 36%);
  box-shadow: var(--shadow-soft);
  transition:
    transform 0.28s ease,
    box-shadow 0.28s ease,
    border-color 0.28s ease;
  overflow: hidden;
}

.path-card--placeholder,
.folio--placeholder,
.spine--placeholder,
.route-chip--placeholder {
  position: relative;
  overflow: hidden;
}

.path-card--placeholder::after,
.folio--placeholder::after,
.spine--placeholder::after,
.route-chip--placeholder::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.42), transparent);
  animation: placeholder-sheen 1.45s ease-in-out infinite;
}

.path-card--placeholder {
  min-height: 260px;
}

.path-card--placeholder::before {
  display: none;
}

.path-card::before {
  content: "";
  width: 120px;
  height: 120px;
  position: absolute;
  right: -28px;
  top: -28px;
  border-radius: 999px;
  background: radial-gradient(circle, var(--path-accent, var(--gold)), transparent 72%);
  opacity: 0.12;
}

.path-card:hover,
.path-card:focus-within {
  transform: translateY(-4px);
  box-shadow: var(--shadow-deep);
  border-color: rgba(83, 61, 36, 0.18);
}

.path-card__head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
}

.path-card__count {
  font-size: 0.82rem;
  color: var(--gold);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.path-card__title {
  margin: 8px 0 0;
  font-size: 1.6rem;
  line-height: 1.15;
}

.path-card__desc,
.path-card__start {
  margin: 0;
  color: var(--ink-soft);
}

.path-card__action {
  justify-self: start;
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid rgba(52, 39, 24, 0.12);
  background: rgba(255, 255, 255, 0.54);
  cursor: pointer;
}

.spine-rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(52px, 64px);
  gap: 10px;
  align-items: end;
  padding: 18px 0 8px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: thin;
}

.spine-rail--loading {
  pointer-events: none;
}

.spine {
  position: relative;
  min-height: 280px;
  padding: 18px 10px 16px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  text-decoration: none;
  border-radius: 18px 18px 10px 10px;
  color: #fbf5eb;
  box-shadow: 0 12px 28px rgba(32, 23, 17, 0.16);
  transition:
    transform 0.24s ease,
    box-shadow 0.24s ease,
    filter 0.24s ease;
  overflow: hidden;
}

.spine--placeholder {
  min-height: 240px;
  background: linear-gradient(180deg, rgba(142, 111, 72, 0.7), rgba(37, 29, 22, 0.92));
}

.spine--placeholder::before {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.14), transparent 22%, rgba(0, 0, 0, 0.1) 100%);
}

.spine--placeholder::after {
  inset: 10px 8px;
}

.spine::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.18), transparent 22%, rgba(0, 0, 0, 0.12) 100%),
    repeating-linear-gradient(
      90deg,
      rgba(255, 255, 255, 0.08) 0 1px,
      transparent 1px 12px
    );
}

.spine::after {
  content: "";
  position: absolute;
  inset: 10px 8px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.spine:hover,
.spine:focus-visible {
  transform: translateY(-6px);
  box-shadow: 0 18px 38px rgba(32, 23, 17, 0.24);
  filter: saturate(108%);
}

.spine__text {
  position: relative;
  z-index: 1;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  display: flex;
  gap: 10px;
  align-items: center;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  line-height: 1.4;
}

.spine__id {
  opacity: 0.78;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
}

.catalogue__tools {
  position: sticky;
  top: 104px;
  z-index: 10;
  margin-bottom: 18px;
  padding: 16px;
  display: grid;
  grid-template-columns: minmax(260px, 1.2fr) auto auto auto;
  gap: 14px;
  align-items: center;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  background: rgba(247, 241, 231, 0.78);
  backdrop-filter: blur(16px) saturate(135%);
  box-shadow: var(--shadow-soft);
}

.field {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 56px;
  padding: 0 16px;
  border-radius: 18px;
  border: 1px solid rgba(63, 46, 28, 0.1);
  background: rgba(255, 255, 255, 0.5);
}

.field input,
.field select {
  width: 100%;
  border: 0;
  outline: none;
  color: var(--ink);
  background: transparent;
}

.field__icon,
.field__label {
  flex: none;
  color: var(--ink-faint);
  font-size: 0.86rem;
}

.catalogue__count {
  justify-self: end;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.view-switch {
  display: inline-flex;
  align-items: center;
  padding: 4px;
  gap: 4px;
  border-radius: 999px;
  border: 1px solid rgba(63, 46, 28, 0.1);
  background: rgba(255, 255, 255, 0.44);
}

.view-switch__button {
  appearance: none;
  border: 0;
  min-width: 64px;
  padding: 10px 14px;
  border-radius: 999px;
  background: transparent;
  color: var(--ink-faint);
  cursor: pointer;
  transition:
    background 0.2s ease,
    color 0.2s ease,
    transform 0.2s ease;
}

.view-switch__button:hover,
.view-switch__button:focus-visible {
  color: var(--ink);
}

.view-switch__button.is-active {
  background: var(--surface-ink);
  color: #f7efe3;
}

.route-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: thin;
}

.route-chip {
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid rgba(63, 46, 28, 0.12);
  background: rgba(255, 248, 238, 0.7);
  color: var(--ink-soft);
  cursor: pointer;
  transition:
    transform 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease,
    background 0.2s ease;
}

.route-chip--placeholder {
  min-width: 116px;
  color: transparent;
  border-color: rgba(63, 46, 28, 0.08);
  background: rgba(255, 248, 238, 0.46);
}

.route-chip:hover,
.route-chip:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(63, 46, 28, 0.2);
}

.route-chip.is-active {
  color: var(--ink);
  background: rgba(255, 248, 238, 0.96);
  border-color: rgba(63, 46, 28, 0.26);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.5);
}

.active-route-note {
  min-height: 28px;
  margin-bottom: 16px;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.folio-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.folio-grid--loading {
  pointer-events: none;
}

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

.folio {
  --folio-accent: var(--gold);
  position: relative;
  display: grid;
  gap: 16px;
  min-height: 320px;
  padding: 26px;
  text-decoration: none;
  color: var(--ink);
  border-radius: 26px;
  background:
    linear-gradient(180deg, rgba(255, 250, 244, 0.94), rgba(245, 237, 224, 0.84)),
    linear-gradient(135deg, var(--folio-tint, rgba(143, 106, 59, 0.14)), transparent 48%);
  border: 1px solid rgba(255, 255, 255, 0.42);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transition:
    transform 0.26s ease,
    box-shadow 0.26s ease,
    border-color 0.26s ease;
}

.folio--placeholder {
  min-height: 320px;
}

.folio--placeholder::before {
  inset: 0;
  height: auto;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.2), transparent 26%),
    linear-gradient(90deg, rgba(74, 55, 33, 0.08) 0 38%, transparent 38% 100%);
}

.folio--placeholder::after {
  right: auto;
  left: 24px;
  bottom: 24px;
  width: calc(100% - 48px);
  height: 14px;
  border-radius: 999px;
  background: rgba(74, 55, 33, 0.08);
}

.folio::before {
  content: "";
  position: absolute;
  inset: 20px 18px auto;
  height: 1px;
  background: linear-gradient(90deg, rgba(63, 46, 28, 0.18), transparent);
}

.folio::after {
  content: "";
  position: absolute;
  right: -40px;
  bottom: -52px;
  width: 180px;
  height: 180px;
  border-radius: 999px;
  background: radial-gradient(circle, var(--folio-tint, rgba(143, 106, 59, 0.14)), transparent 70%);
  opacity: 0.9;
}

.folio:hover,
.folio:focus-visible {
  transform: translateY(-6px) rotate(-0.35deg);
  border-color: rgba(73, 54, 34, 0.18);
  box-shadow: var(--shadow-deep);
}

.folio-grid.is-list .folio {
  min-height: 0;
  grid-template-columns: minmax(0, 1.4fr) minmax(200px, 0.6fr);
  gap: 14px 24px;
  align-items: center;
}

.folio-grid.is-list .folio__head {
  grid-column: 1;
}

.folio-grid.is-list .folio__summary {
  grid-column: 1;
  max-width: 48rem;
}

.folio-grid.is-list .folio__tags {
  grid-column: 2;
  justify-content: flex-end;
  align-self: center;
}

.folio-grid.is-list .folio__footer {
  grid-column: 1 / -1;
  margin-top: 2px;
  padding-top: 12px;
  border-top: 1px solid rgba(58, 42, 28, 0.08);
}

.folio__head,
.folio__footer,
.folio__tags {
  position: relative;
  z-index: 1;
}

.folio__head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.folio__route {
  font-size: 0.84rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--folio-accent);
}

.folio__id {
  color: var(--ink-faint);
  letter-spacing: 0.18em;
  font-size: 0.8rem;
}

.folio__title {
  position: relative;
  z-index: 1;
  margin: 0;
  font-size: 1.6rem;
  line-height: 1.18;
  letter-spacing: -0.03em;
}

.folio__summary {
  position: relative;
  z-index: 1;
  margin: 0;
  color: var(--ink-soft);
}

.folio__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-self: start;
}

.folio__tag {
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid rgba(58, 42, 28, 0.08);
  font-size: 0.76rem;
  color: var(--ink-soft);
}

.folio__footer {
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  color: var(--ink-faint);
  font-size: 0.9rem;
}

.folio__cta {
  color: var(--folio-accent);
}

.closing {
  margin-top: 96px;
  padding: 46px 0 20px;
  border-top: 1px solid rgba(63, 46, 28, 0.12);
}

.closing h2 {
  max-width: 18ch;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity 0.7s ease,
    transform 0.7s ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

.is-empty {
  padding: 34px 24px;
  border-radius: 22px;
  background: rgba(255, 248, 238, 0.7);
  border: 1px solid rgba(58, 42, 28, 0.08);
  color: var(--ink-soft);
}

.is-static-light::before {
  display: none;
}

@keyframes placeholder-sheen {
  100% {
    transform: translateX(100%);
  }
}

@media (max-width: 1200px) {
  .method__grid,
  .paths__grid,
  .folio-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .spine-rail {
    grid-auto-columns: minmax(58px, 68px);
  }
}

@media (max-width: 1100px) {
  .masthead {
    grid-template-columns: auto 1fr;
    padding: 16px 18px;
    border-radius: 28px;
  }

  .masthead__nav {
    grid-column: 1 / -1;
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 12px 22px;
    padding-top: 4px;
  }

  .masthead__meta {
    justify-self: end;
  }

  .hero {
    min-height: auto;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.84fr);
    padding: 98px 0 48px;
    gap: 24px;
    align-items: stretch;
  }

  .hero__copy {
    padding-right: 0;
  }

  .feature-card {
    min-height: 460px;
  }

  .overview {
    grid-template-columns: 1fr;
    padding-inline: 12px;
  }

  .overview__quote {
    max-width: none;
  }

  .catalogue__tools {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    top: 106px;
    align-items: stretch;
  }

  .catalogue__tools .field--search {
    grid-column: 1 / -1;
  }

  .catalogue__count {
    justify-self: start;
  }

  .view-switch {
    justify-self: end;
  }
}

@media (max-width: 980px) {
  main {
    display: flex;
    flex-direction: column;
    gap: 28px;
    padding-bottom: 64px;
  }

  .hero,
  .overview,
  .section-block,
  .closing,
  .quick-access {
    margin-top: 0;
  }

  .hero {
    order: 1;
  }

  .quick-access {
    display: block;
    order: 2;
  }

  #spines {
    order: 3;
  }

  #catalogue {
    order: 4;
  }

  .overview {
    order: 5;
  }

  .method {
    order: 6;
  }

  #paths {
    order: 7;
  }

  .closing {
    order: 8;
  }

  .masthead {
    grid-template-columns: 1fr auto;
    border-radius: 26px;
    padding: 16px;
  }

  .masthead__nav {
    display: none;
  }

  .masthead__meta {
    justify-self: end;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    padding-top: 92px;
    padding-bottom: 22px;
  }

  .hero__feature {
    max-width: 720px;
    width: 100%;
  }

  .hero__backdrop::after {
    display: none;
  }

  .hero__subnote {
    max-width: 36rem;
  }

  #paths {
    display: none;
  }

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

  .catalogue__tools {
    grid-template-columns: 1fr;
    top: 92px;
  }

  .catalogue__tools .field--search {
    grid-column: auto;
  }

  .catalogue__count {
    justify-self: start;
  }

  .view-switch {
    justify-self: start;
  }

  .folio-grid.is-list .folio {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
    padding: 20px 20px 18px;
  }

  .folio-grid.is-list .folio__summary {
    grid-column: auto;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .folio-grid.is-list .folio__tags {
    grid-column: auto;
    justify-content: flex-start;
  }

  .folio-grid.is-list .folio__footer {
    grid-column: auto;
    margin-top: 0;
    padding-top: 10px;
  }
}

@media (max-width: 860px) {
  :root {
    --shell-gutter: 24px;
    --masthead-offset: 12px;
  }

  .masthead {
    gap: 12px;
    padding: 14px 16px;
    width: min(calc(100% - var(--shell-gutter)), 100%);
  }

  .masthead__brand-text strong {
    font-size: 0.96rem;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 84px;
    gap: 16px;
  }

  .hero__feature {
    max-width: none;
  }

  .hero__backdrop {
    inset: 18px 0 0;
    border-radius: 30px;
  }

  .hero__copy {
    padding: 20px 8px 8px;
  }

  .hero h1 {
    max-width: 11ch;
    font-size: clamp(2.8rem, 10vw, 4.6rem);
  }

  .hero h1 span {
    color: rgba(43, 34, 27, 0.92);
  }

  .feature-card {
    min-height: 0;
    padding: 18px;
  }

  .feature-card__title {
    font-size: clamp(1.8rem, 5.6vw, 2.8rem);
  }

  .feature-card__summary {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .overview__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .method__grid,
  .paths__grid,
  .folio-grid {
    grid-template-columns: 1fr;
  }

  .catalogue__tools {
    position: static;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .catalogue__tools .field--search {
    grid-column: 1 / -1;
  }

  .view-switch {
    width: 100%;
    justify-content: space-between;
  }

  .view-switch__button {
    flex: 1;
    min-width: 0;
  }

  .route-chip {
    white-space: nowrap;
  }

  .quick-access {
    padding: 20px 18px 8px;
  }

  .quick-access__actions {
    grid-template-columns: 1fr;
  }

  .quick-access__pill {
    justify-content: space-between;
    text-align: left;
  }

  .folio {
    min-height: 0;
  }

  .folio__title {
    font-size: 1.34rem;
  }

  .folio-grid.is-list .folio {
    border-radius: 22px;
  }

  .folio-grid.is-list .folio__tag:nth-child(n + 3) {
    display: none;
  }

  #spines .section-head {
    margin-bottom: 16px;
  }

  #spines .section-head__desc {
    font-size: 0.94rem;
  }

  .spine-rail {
    padding-top: 10px;
  }
}

@media (max-width: 640px) {
  :root {
    --shell-gutter: 20px;
  }

  main {
    padding-bottom: 56px;
  }

  .masthead {
    gap: 10px;
    padding: 13px 14px;
    border-radius: 24px;
    grid-template-columns: 1fr;
  }

  .masthead__brand-mark {
    min-width: 64px;
    padding-inline: 12px;
  }

  .masthead__brand {
    width: 100%;
  }

  .masthead__brand-text em,
  .masthead__meta {
    display: none;
  }

  .hero {
    padding-top: 78px;
    gap: 14px;
  }

  .hero__backdrop {
    inset: 16px 0 0;
    border-radius: 26px;
  }

  .hero__copy {
    padding: 16px 6px 4px;
  }

  .hero__eyebrow,
  .section-head__eyebrow,
  .closing__eyebrow {
    letter-spacing: 0.16em;
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(2.15rem, 12vw, 3.4rem);
  }

  .hero h1 span {
    color: rgba(43, 34, 27, 0.92);
  }

  .hero__lede {
    margin-top: 18px;
    font-size: 0.98rem;
  }

  .hero__subnote {
    display: none;
  }

  .hero__actions,
  .closing__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    width: 100%;
  }

  .feature-card {
    min-height: 0;
    padding: 16px;
  }

  .feature-card__meta {
    gap: 8px;
  }

  .feature-card__tag:nth-child(n + 3) {
    display: none;
  }

  .overview {
    margin-top: 10px;
    padding-inline: 6px;
    gap: 16px;
  }

  .overview__stats,
  .method__grid,
  .paths__grid,
  .folio-grid {
    grid-template-columns: 1fr;
  }

  .overview__stats article {
    padding: 18px 16px;
  }

  .section-block {
    margin-top: 0;
  }

  .section-head {
    gap: 8px;
    margin-bottom: 24px;
  }

  .section-head h2,
  .closing h2 {
    font-size: clamp(1.8rem, 9vw, 2.8rem);
  }

  .overview__quote {
    font-size: clamp(1.18rem, 5vw, 1.5rem);
  }

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

  .folio-grid.is-list .folio__summary,
  .folio-grid.is-list .folio__tags,
  .folio-grid.is-list .folio__footer {
    grid-column: auto;
  }

  .folio-grid.is-list .folio__tags {
    justify-content: flex-start;
  }

  .path-card,
  .folio {
    min-height: 0;
    padding: 18px;
    border-radius: 22px;
  }

  .feature-card__actions,
  .catalogue__tools,
  .route-filters {
    gap: 10px;
  }

  .spine-rail {
    grid-auto-columns: minmax(40px, 50px);
    gap: 8px;
    padding-top: 4px;
    padding-bottom: 0;
    scroll-snap-type: x proximity;
  }

  .spine {
    min-height: 148px;
    scroll-snap-align: start;
    padding: 12px 8px 10px;
    border-radius: 14px 14px 8px 8px;
  }

  .catalogue__tools {
    padding: 12px;
    border-radius: 20px;
    grid-template-columns: 1fr;
  }

  .catalogue .section-head {
    margin-bottom: 18px;
  }

  .catalogue .section-head__desc {
    font-size: 0.94rem;
  }

  .field {
    min-height: 52px;
    padding: 0 14px;
  }

  .view-switch,
  .catalogue__count {
    justify-self: stretch;
  }

  .folio__head,
  .folio__footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .folio__summary {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    font-size: 0.94rem;
  }

  .folio__tags {
    gap: 6px;
  }

  .folio__tag {
    padding: 5px 9px;
  }

  .quick-access {
    padding: 18px 16px 8px;
    border-radius: 24px;
  }

  .quick-access__intro h2 {
    font-size: clamp(1.45rem, 7vw, 2rem);
  }

  .quick-access__desc {
    font-size: 0.94rem;
  }

  .closing {
    margin-top: 72px;
    padding-top: 34px;
  }
}

@media (max-width: 768px) {
  main {
    gap: 22px;
  }

  .hero {
    order: 1;
    padding-bottom: 10px;
  }

  #spines {
    order: 2;
  }

  #catalogue {
    order: 3;
  }

  .closing {
    order: 4;
  }

  .hero__feature,
  .quick-access,
  .overview,
  .method {
    display: none !important;
  }

  .hero__copy {
    padding-bottom: 0;
  }

  .hero__actions {
    margin-top: 18px;
  }

  #catalogue .section-head,
  #spines .section-head {
    margin-bottom: 16px;
  }

  #catalogue .section-head__desc,
  #spines .section-head__desc {
    font-size: 0.92rem;
  }

  .closing {
    margin-top: 24px;
    padding-top: 24px;
  }
}

@media (hover: none), (pointer: coarse) {
  body::before {
    display: none;
  }

  .masthead,
  .catalogue__tools,
  .button--ghost {
    backdrop-filter: blur(10px);
  }
}

@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;
  }
}