:root {
  --paper: #f2eee4;
  --sheet: #fffdf8;
  --ink: #141414;
  --mute: #4d4a44;
  --line: #1c1c1c;
  --hair: #d4cdc0;
  --red: #b42318;
  --teal: #0b5f63;
  --shadow: 0 14px 32px rgba(20, 20, 20, 0.08);
  --serif: Georgia, "Palatino Linotype", Palatino, "Songti SC", "STSong", "SimSun", serif;
  --sans: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --wrap: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--teal);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--red);
}

:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: 12px;
  top: -48px;
  z-index: 80;
  background: var(--ink);
  color: var(--sheet);
  padding: 0.5rem 0.85rem;
}

.skip:focus {
  top: 12px;
}

.wrap {
  width: min(calc(100% - 32px), var(--wrap));
  margin: 0 auto;
}

.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.masthead {
  border-bottom: 1px solid var(--line);
  background: var(--sheet);
}

.mast-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 0;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mute);
  border-bottom: 3px double var(--line);
}

.site-head {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 253, 248, 0.94);
  border-bottom: 1px solid var(--hair);
}

.site-head.is-stuck {
  box-shadow: 0 8px 20px rgba(20, 20, 20, 0.06);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  text-decoration: none;
  font-family: var(--serif);
}

.brand img {
  width: 40px;
  height: 40px;
  object-fit: cover;
  border: 1px solid var(--line);
}

.brand span {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  font-size: 1.15rem;
}

.brand small {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mute);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--sheet);
  color: var(--ink);
  min-height: 40px;
  padding: 0 12px;
  font: inherit;
  cursor: pointer;
}

.menu ul {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.menu a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 10px;
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
}

.menu a[aria-current="page"] {
  box-shadow: inset 0 -2px 0 var(--red);
}

.menu a.cta {
  background: var(--red);
  color: #fff;
  padding: 0 16px;
  font-weight: 700;
}

.menu a.cta:hover,
.menu a.cta:focus-visible {
  background: #8e1a12;
  color: #fff;
}

main section {
  padding: 56px 0;
}

.kicker {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--red);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.lead {
  color: var(--mute);
  font-size: 1.05rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 16px;
}

.tag {
  border: 1px solid var(--line);
  padding: 2px 10px;
  font-size: 12px;
  letter-spacing: 0.08em;
}

.tag-on {
  background: var(--ink);
  color: var(--sheet);
}

.btn,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  text-decoration: none;
  font-weight: 700;
}

.btn {
  background: var(--red);
  color: #fff;
}

.btn:hover,
.btn:focus-visible {
  background: #8e1a12;
  color: #fff;
}

.btn-ghost {
  border: 1px solid var(--line);
  color: var(--ink);
  background: transparent;
}

.acts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.head {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
  margin-bottom: 28px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.head h2,
.block h2,
.page-hero h1,
.cover-copy h1 {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.head p,
.page-hero .lead {
  margin: 0;
  max-width: 46ch;
}

.cover {
  padding: 36px 0 20px;
}

.cover-grid {
  display: grid;
  grid-template-columns: 1.45fr 0.85fr;
  gap: 28px;
  align-items: start;
}

.cover-copy h1 {
  font-size: clamp(2.4rem, 5vw, 4.2rem);
}

.cover-copy .lead {
  font-size: 1.08rem;
}

.cover-fig {
  margin: 0;
  background: var(--sheet);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.cover-fig img,
.media img {
  width: 100%;
  aspect-ratio: 880 / 700;
  object-fit: cover;
}

.cover-fig figcaption,
.media figcaption {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 12px;
  border-top: 1px solid var(--hair);
  font-size: 12px;
  color: var(--mute);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 28px;
  background: var(--line);
  border: 1px solid var(--line);
}

.metric {
  background: var(--sheet);
  padding: 16px 14px;
}

.metric strong {
  display: block;
  font-family: var(--serif);
  font-size: 1.7rem;
  line-height: 1.1;
}

.metric span {
  display: block;
  margin-top: 6px;
  color: var(--mute);
  font-size: 13px;
}

.digest {
  background: var(--sheet);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.digest-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.digest article {
  padding-top: 4px;
}

.digest time,
.rec .meta,
.entry .meta,
.card .meta {
  display: block;
  margin-bottom: 8px;
  color: var(--mute);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.digest h3,
.rec h3,
.entry h3,
.card h3,
.plat h3,
.note h3 {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: 1.2rem;
}

.digest p,
.rec p,
.entry p,
.card p,
.plat p,
.note p {
  margin: 0;
  color: var(--mute);
}

.grid-3,
.grid-4,
.grid-2 {
  display: grid;
  gap: 16px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.entry,
.rec,
.card,
.plat,
.note {
  background: var(--sheet);
  border: 1px solid var(--hair);
  padding: 18px 16px 16px;
  text-decoration: none;
  color: inherit;
}

a.entry,
a.rec {
  display: block;
  color: inherit;
}

a.entry:hover,
a.rec:hover,
a.entry:focus-visible,
a.rec:focus-visible {
  border-color: var(--line);
  box-shadow: var(--shadow);
  color: inherit;
}

.rec .label {
  display: inline-block;
  margin-bottom: 10px;
  border: 1px solid var(--line);
  padding: 1px 8px;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.icon {
  width: 42px;
  height: 42px;
  margin-bottom: 12px;
}

.icon svg {
  width: 42px;
  height: 42px;
}

.idx {
  display: block;
  margin-bottom: 8px;
  color: var(--red);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.duo {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  align-items: center;
}

.duo.reverse {
  grid-template-columns: 0.9fr 1.1fr;
}

.media {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--sheet);
}

.checks {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.checks li {
  position: relative;
  padding: 10px 0 10px 22px;
  border-bottom: 1px solid var(--hair);
}

.checks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 10px;
  height: 1px;
  background: var(--red);
}

.checks h3 {
  margin: 0 0 4px;
  font-size: 1rem;
}

.page-hero {
  padding-top: 36px;
  padding-bottom: 28px;
}

.crumbs {
  margin: 0 0 14px;
  font-size: 13px;
}

.cues {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.cue {
  display: grid;
  gap: 4px;
  padding: 14px 12px;
  border: 1px solid var(--hair);
  background: var(--sheet);
  color: inherit;
  text-decoration: none;
}

.cue:hover,
.cue.is-live,
.cue:focus-visible {
  border-color: var(--line);
  color: inherit;
}

.cue .n {
  color: var(--red);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.cue .t {
  font-family: var(--serif);
  font-size: 1.15rem;
}

.cue .h {
  color: var(--mute);
  font-size: 13px;
}

.cite {
  margin: 20px 0 0;
  padding: 12px 14px;
  border-left: 3px solid var(--red);
  background: var(--sheet);
  color: var(--mute);
}

.faq details {
  background: var(--sheet);
  border: 1px solid var(--hair);
  border-bottom: 0;
}

.faq details:last-of-type {
  border-bottom: 1px solid var(--hair);
}

.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 16px 18px;
  font-family: var(--serif);
  font-size: 1.15rem;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  float: right;
  color: var(--red);
}

.faq details[open] summary::after {
  content: "–";
}

.faq details p {
  margin: 0;
  padding: 0 18px 16px;
  color: var(--mute);
}

footer {
  border-top: 3px double var(--line);
  background: var(--sheet);
  padding: 40px 0 24px;
}

.foot-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
  gap: 24px;
}

.foot-grid h3 {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-size: 1rem;
}

.foot-grid ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.foot-grid li {
  margin: 0 0 8px;
}

.foot-grid p {
  color: var(--mute);
  font-size: 14px;
}

.legal {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 28px;
  padding-top: 14px;
  border-top: 1px solid var(--hair);
  color: var(--mute);
  font-size: 13px;
}

[data-reveal] {
  opacity: 1;
  transform: none;
}

.js-ready [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
}

.js-ready [data-reveal].is-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.45s ease, transform 0.45s ease;
}

@media (max-width: 980px) {
  .cover-grid,
  .duo,
  .duo.reverse,
  .digest-list,
  .grid-4,
  .cues,
  .foot-grid,
  .metrics {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 760px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
  }

  .menu {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: var(--sheet);
    border-bottom: 1px solid var(--line);
    padding: 8px 16px 16px;
  }

  .menu.is-open {
    display: block;
  }

  .menu ul {
    flex-direction: column;
    align-items: stretch;
  }

  .cover-grid,
  .duo,
  .duo.reverse,
  .digest-list,
  .grid-4,
  .grid-3,
  .grid-2,
  .cues,
  .foot-grid,
  .metrics,
  .legal {
    grid-template-columns: 1fr;
  }

  .legal {
    display: grid;
  }

  .head {
    flex-direction: column;
    align-items: start;
  }

  body.nav-open {
    overflow: hidden;
  }
}

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

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

  .js-ready [data-reveal] {
    opacity: 1;
    transform: none;
  }
}