:root {
  --ink: #1a1714;
  --muted: #5c5348;
  --paper: #f6f3ec;
  --card: #fffdf8;
  --line: rgba(26, 23, 20, 0.12);
  --cinnabar: #b43b1c;
  --gilt: #8a6a3d;
  --void: #161310;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  --text: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; }
body {
  font-family: var(--text);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.75;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}
body.nav-open { overflow: hidden; }
img { max-width: 100%; display: block; }
a { color: inherit; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

.skip {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 80;
  padding: 0.5rem 0.8rem;
  background: var(--cinnabar);
  color: #fff;
}
.skip:focus { top: 1rem; }

.top { position: sticky; top: 0; z-index: 40; }
.top__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.85rem 5vw;
  background: rgba(246, 243, 236, 0.92);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(12px);
}
.top.is-scrolled .top__bar { border-bottom-color: var(--line); }

.mark {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  min-width: 8rem;
}
.mark svg { width: 26px; height: 26px; flex: none; }
.mark__cn {
  font-family: var(--display);
  font-size: 1.25rem;
  letter-spacing: 0.16em;
  font-weight: 600;
}
.mark__en {
  display: block;
  font-family: var(--sans);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--gilt);
}

.nav { display: flex; align-items: center; gap: 1.25rem; }
.nav a, .nav summary {
  font-family: var(--sans);
  font-size: 0.92rem;
  text-decoration: none;
  color: var(--muted);
  list-style: none;
}
.nav a:hover, .nav a.is-current, .nav summary:hover { color: var(--ink); }
.nav details { position: relative; }
.nav details summary { cursor: pointer; }
.nav details summary::-webkit-details-marker { display: none; }
.nav__panel {
  position: absolute;
  top: calc(100% + 0.7rem);
  left: 50%;
  transform: translateX(-50%);
  min-width: 11rem;
  padding: 0.55rem 0.35rem;
  background: var(--card);
  border: 1px solid var(--line);
  display: grid;
  gap: 0.1rem;
  box-shadow: 0 10px 30px rgba(26, 23, 20, 0.08);
}
.nav__panel a { display: block; padding: 0.4rem 0.75rem; white-space: nowrap; }

.cta {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--cinnabar);
  color: var(--cinnabar);
  text-decoration: none;
  font-family: var(--sans);
  font-size: 0.88rem;
}
.cta:hover { background: var(--cinnabar); color: #fff; }
.menu { display: none; width: 2.4rem; height: 2.4rem; position: relative; }
.menu span,
.menu::before,
.menu::after {
  content: "";
  position: absolute;
  left: 0.45rem;
  right: 0.45rem;
  height: 1px;
  background: var(--ink);
}
.menu span { top: 50%; }
.menu::before { top: 0.75rem; }
.menu::after { bottom: 0.75rem; }

.drawer {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: rgba(246, 243, 236, 0.98);
  padding: 6rem 8vw 3rem;
  display: grid;
  align-content: start;
  gap: 1rem;
}
.drawer[hidden] { display: none; }
.drawer a {
  font-family: var(--display);
  font-size: clamp(1.5rem, 6vw, 2.2rem);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.5rem;
}

.hero {
  position: relative;
  padding: 4.5rem 5vw 3.2rem;
  display: grid;
  gap: 0;
  overflow: hidden;
}
.hero--photo {
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 2.2rem;
  align-items: end;
}
.hero h1 {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.22;
  letter-spacing: 0.02em;
  margin: 0 0 1rem;
  max-width: 18ch;
}
.hero__lead {
  max-width: 40rem;
  font-size: 1.12rem;
  color: var(--muted);
  margin: 0 0 1.6rem;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 0.7rem; }
.btn {
  display: inline-flex;
  align-items: center;
  padding: 0.75rem 1.15rem;
  text-decoration: none;
  font-family: var(--sans);
  font-size: 0.92rem;
}
.btn--solid { background: var(--cinnabar); color: #fff; }
.btn--ghost { border: 1px solid var(--line); }
.btn--ghost:hover, .btn--solid:hover { background: var(--void); color: #fff; border-color: var(--void); }

.band {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 1.4rem;
  padding: 0.9rem 5vw;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-family: var(--sans);
  font-size: 0.88rem;
  color: var(--gilt);
}

.sheet { background: var(--paper); color: var(--ink); }
.sheet a { color: var(--cinnabar); }
.section { padding: 3.4rem 5vw; }
.section__head {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 1.2rem 3rem;
  margin-bottom: 1.8rem;
  align-items: end;
}
.section__head h2,
.page-hero h1,
.prose h1 {
  font-family: var(--display);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.25;
  margin: 0;
}
.section__head h2 { font-size: clamp(1.55rem, 3vw, 2.15rem); }
.section__head p { margin: 0; color: var(--muted); }
.idx {
  font-family: var(--sans);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--cinnabar);
  display: block;
  margin-bottom: 0.45rem;
}

.scenes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.scene {
  background: var(--card);
  padding: 0;
  text-decoration: none;
  color: inherit;
  min-height: 12rem;
  display: flex;
  flex-direction: column;
}
.scene img {
  width: 100%;
  height: 11rem;
  object-fit: cover;
  background: #e8e2d6;
}
.scene > div {
  padding: 1.2rem 1.3rem 1.3rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.scene:hover { outline: 2px solid var(--cinnabar); outline-offset: -2px; }
.scene em {
  font-family: var(--sans);
  font-style: normal;
  font-size: 0.78rem;
  color: var(--cinnabar);
}
.scene h3 {
  font-family: var(--display);
  font-size: 1.45rem;
  margin: 0.7rem 0 0.45rem;
}
.scene p { margin: 0; color: var(--muted); }

.offers {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}
.offer {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 0;
  text-decoration: none;
  color: inherit;
  display: block;
  overflow: hidden;
}
.offer img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background: #e8e2d6;
}
.offer > div { padding: 1.05rem 1.1rem 1.05rem; }
.offer:hover { border-color: var(--cinnabar); }
.offer span {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--cinnabar);
}
.offer h3 { font-family: var(--display); font-size: 1.15rem; margin: 0.45rem 0 0.4rem; }
.offer p { margin: 0; color: var(--muted); font-size: 0.95rem; }

.shots {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}
.shot { margin: 0; }
.shot img {
  width: 100%;
  height: auto;
  object-fit: cover;
  background: #e8e2d6;
}
.shots .shot img {
  aspect-ratio: 4 / 3;
  object-position: 70% 50%;
}
.shot figcaption,
.prose .shot figcaption {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 0.45rem;
  line-height: 1.5;
}
.prose .shot { margin: 1rem 0 1.5rem; }
.prose .shot img { max-height: 28rem; width: 100%; object-fit: cover; }

.cases {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}
.case {
  border: 1px solid var(--line);
  padding: 1.25rem 1.15rem;
  background: var(--card);
  text-decoration: none;
  color: inherit;
  display: block;
}
.case:hover { border-color: var(--cinnabar); }
.case time {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--cinnabar);
}
.case h3 { font-family: var(--display); font-size: 1.25rem; margin: 0.5rem 0 0.4rem; }
.case p { margin: 0; color: var(--muted); }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.panel { background: var(--card); padding: 1.7rem 1.5rem; }
.panel h3 { font-family: var(--display); font-size: 1.35rem; margin: 0 0 0.7rem; }
.panel ul { margin: 0; padding-left: 1.1rem; }
.panel li + li { margin-top: 0.35rem; }

.compare {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border: 1px solid var(--line);
}
.compare th, .compare td {
  text-align: left;
  vertical-align: top;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--line);
}
.compare th {
  font-family: var(--sans);
  font-size: 0.82rem;
  font-weight: 600;
  width: 22%;
  color: var(--cinnabar);
}
.compare caption {
  caption-side: bottom;
  text-align: left;
  padding: 0.7rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.8rem;
}
.step {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 1.1rem 1rem;
}
.step b {
  display: block;
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--cinnabar);
  margin-bottom: 0.4rem;
}
.step h3 { font-family: var(--display); font-size: 1.15rem; margin: 0 0 0.4rem; }
.step p { margin: 0; color: var(--muted); font-size: 0.95rem; }

.ledger {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
}
.ledger th, .ledger td {
  text-align: left;
  vertical-align: top;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--line);
}
.ledger th {
  width: 10.5rem;
  font-family: var(--sans);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--cinnabar);
}
.note, .muted { color: var(--muted); }

.page-hero { padding: 3.4rem 5vw 1.6rem; }
.crumbs {
  font-family: var(--sans);
  font-size: 0.82rem;
  color: var(--gilt);
  margin: 0 0 0.9rem;
}
.crumbs a { color: inherit; text-decoration: none; }
.page-hero h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); max-width: 18ch; }
.page-hero .lead {
  max-width: 42rem;
  color: var(--muted);
  margin: 0.8rem 0 0;
}

.kicker {
  font-family: var(--sans);
  font-size: 0.82rem;
  color: var(--cinnabar);
  margin: 0 0 0.7rem;
}

.prose {
  background: var(--paper);
  color: var(--ink);
  padding: 1.2rem 5vw 4rem;
}
.prose-wrap { max-width: 46rem; }
.prose-wrap--wide { max-width: 58rem; }
.prose h2 {
  font-family: var(--display);
  font-size: 1.35rem;
  margin: 2rem 0 0.6rem;
}
.prose p, .prose li { font-size: 1.02rem; }
.prose .fact {
  border: 1px solid var(--line);
  padding: 1rem 1.1rem;
  background: var(--card);
}
.prose .btn--solid { color: #fff; }
.prose .btn--ghost { border-color: var(--line); color: var(--ink); }

.faq details {
  border-top: 1px solid var(--line);
  padding: 1rem 0;
}
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer;
  font-family: var(--display);
  font-size: 1.08rem;
  line-height: 1.45;
}
.faq details p { margin: 0.7rem 0 0.15rem; }

.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
}
.phone {
  font-family: var(--display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  letter-spacing: 0.03em;
  text-decoration: none;
  color: inherit;
}

.foot {
  padding: 2.6rem 5vw 1.6rem;
  border-top: 1px solid rgba(244, 236, 220, 0.12);
  background: var(--void);
  color: rgba(244, 236, 220, 0.78);
}
.foot__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 1.8rem;
}
.foot h2 {
  font-family: var(--sans);
  font-size: 0.82rem;
  color: #c4a574;
  margin: 0 0 0.8rem;
}
.foot a { color: inherit; text-decoration: none; }
.foot a:hover { color: #fff; }
.foot ul { list-style: none; margin: 0; padding: 0; }
.foot li + li { margin-top: 0.35rem; }
.foot__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.2rem;
  padding-top: 1.1rem;
  border-top: 1px solid rgba(244, 236, 220, 0.12);
  font-family: var(--sans);
  font-size: 0.78rem;
  color: #8c8276;
}

@media (max-width: 960px) {
  .nav, .cta { display: none; }
  .menu { display: block; }
  .section__head, .cases, .split, .contact-grid, .foot__grid, .offers, .steps, .shots { grid-template-columns: 1fr; }
  .scenes { grid-template-columns: 1fr; }
  .hero { padding-top: 3rem; }
  .hero--photo { grid-template-columns: 1fr; }
}