:root {
  --ink: #11110f;
  --ink-soft: #34322e;
  --paper: #f7f3ec;
  --paper-deep: #ebe3d6;
  --line: rgba(17, 17, 15, 0.15);
  --red: #b8201c;
  --white: #fffaf1;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { background: var(--paper); color: var(--ink); margin: 0; }
img { display: block; width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }

.site-header {
  align-items: center;
  background: linear-gradient(to bottom, rgba(8, 8, 7, 0.52), rgba(8, 8, 7, 0.08), transparent);
  color: var(--white);
  display: flex;
  inset: 0 0 auto;
  justify-content: space-between;
  padding: 24px 32px;
  position: fixed;
  transition: background 240ms ease, padding 240ms ease;
  z-index: 20;
}

.site-header.is-scrolled {
  -webkit-backdrop-filter: blur(18px) saturate(115%);
  backdrop-filter: blur(18px) saturate(115%);
  background: rgba(15, 15, 13, 0.78);
  padding-bottom: 16px;
  padding-top: 16px;
}

.brand { align-items: center; display: flex; gap: 12px; }
.brand-icon { filter: drop-shadow(0 1px 10px rgba(0, 0, 0, 0.24)); height: 34px; object-fit: contain; width: 34px; }
.brand strong { display: block; font-family: Georgia, "Times New Roman", serif; font-size: 24px; font-weight: 700; line-height: 1; }
.brand small { color: rgba(255, 250, 241, 0.66); display: block; font-size: 11px; margin-top: 5px; }
.header-actions { align-items: center; display: flex; gap: 30px; }
.back-link, .lang-toggle { font-size: 12px; font-weight: 800; letter-spacing: 0.11em; text-transform: uppercase; }
.back-link { border-bottom: 1px solid rgba(255, 250, 241, 0.42); padding-bottom: 8px; }
.back-label-short { display: none; }
.lang-toggle { background: none; border: 0; color: var(--white); cursor: pointer; }
.lang-toggle span:first-child { color: #ed453d; }
.lang-toggle.is-zh span:first-child { color: rgba(255, 250, 241, 0.66); }
.lang-toggle.is-zh span:last-child { color: #ed453d; }

.experience-hero { color: var(--white); height: clamp(620px, 72vh, 720px); min-height: 0; overflow: hidden; position: relative; }
.hero-image { height: 100%; inset: 0; object-fit: cover; object-position: center 48%; position: absolute; transform: scale(1.04); }
.page-ready .hero-image { transform: scale(1); transition: transform 1.8s ease-out; }
.hero-shade {
  background: linear-gradient(90deg, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.4) 42%, rgba(0, 0, 0, 0.05) 74%), linear-gradient(0deg, rgba(0, 0, 0, 0.56), transparent 44%);
  inset: 0;
  position: absolute;
}
.hero-content { padding: clamp(120px, 14vh, 140px) 32px 48px; position: relative; width: min(1000px, 82vw); }
@media (min-width: 921px) { .hero-content { margin-left: clamp(72px, 8vw, 150px); } }
.eyebrow, .section-label { color: var(--red); font-size: 12px; font-weight: 800; letter-spacing: 0.14em; margin: 0 0 16px; text-transform: uppercase; }
.hero-content h1, h2, h3 { font-family: Georgia, "Times New Roman", serif; font-weight: 400; letter-spacing: 0; }
.hero-content h1 { font-size: clamp(58px, 5.8vw, 88px); line-height: 0.99; margin: 0; max-width: 960px; }
.hero-body { color: rgba(255, 250, 241, 0.88); font-size: 18px; line-height: 1.6; margin: 26px 0 0; max-width: 620px; }
.hero-meta { border-top: 1px solid rgba(255, 250, 241, 0.25); display: flex; flex-direction: column; gap: 8px; margin-top: 22px; max-width: 620px; padding-top: 16px; }
.hero-meta span { color: rgba(255, 250, 241, 0.75); font-size: 12px; font-weight: 700; letter-spacing: 0.05em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 38px; margin-top: 26px; }
.hero-actions a, .host-note-copy a { font-size: 12px; font-weight: 800; letter-spacing: 0.11em; padding-bottom: 9px; position: relative; text-transform: uppercase; }
.hero-actions a::after, .host-note-copy a::after { background: var(--red); bottom: 0; content: ""; height: 2px; left: 0; position: absolute; transform: scaleX(0.38); transform-origin: left center; transition: transform 420ms cubic-bezier(0.22, 1, 0.36, 1); width: 100%; }
.hero-actions a:hover::after, .hero-actions a:focus-visible::after, .host-note-copy a:hover::after, .host-note-copy a:focus-visible::after { transform: scaleX(1); }
.scroll-cue { bottom: 28px; font-size: 10px; font-weight: 800; letter-spacing: 0.15em; position: absolute; right: 32px; text-transform: uppercase; }

.question-section { align-items: start; display: grid; gap: 6vw; grid-template-columns: minmax(160px, 0.45fr) minmax(0, 1.55fr); margin: 0 auto; max-width: 1440px; padding: 140px 6vw 150px; }
.question-number { color: var(--red); font-family: Georgia, "Times New Roman", serif; font-size: clamp(96px, 13vw, 190px); line-height: 0.8; opacity: 0.18; }
.question-copy { max-width: 960px; }
.question-copy h2, .section-heading h2, .fit-heading h2, .practical-heading h2, .host-note-copy h2, .page-cta h2 { font-size: clamp(43px, 5vw, 74px); line-height: 1.08; margin: 0; }
.question-copy > p:last-child, .selective-copy > p:last-child, .page-cta > div > p { color: var(--ink-soft); font-size: 18px; line-height: 1.75; margin: 38px 0 0; max-width: 690px; }

.selective-section { background: var(--ink); color: var(--white); padding: 140px 7vw 150px; }
.selective-copy { margin: 0 auto; max-width: 1040px; text-align: center; }
.selective-copy h2 { font-size: clamp(42px, 4.7vw, 72px); line-height: 1.08; margin: 0; }
.selective-copy > p:last-child { color: rgba(255, 250, 241, 0.72); margin-left: auto; margin-right: auto; }

.lenses-section { padding: 140px 6vw 160px; }
.section-heading { margin: 0 auto 100px; max-width: 1160px; text-align: center; }
.section-heading h2 { margin-left: auto; margin-right: auto; max-width: 940px; }
.lens-row { align-items: center; display: grid; gap: 7vw; grid-template-columns: minmax(300px, 0.72fr) minmax(0, 1.28fr); margin: 0 auto 120px; max-width: 1320px; }
.lens-row.reverse { grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.95fr); }
.lens-row.reverse .lens-copy { grid-column: 2; grid-row: 1; }
.lens-row.reverse .lens-image { grid-column: 1; grid-row: 1; }
.lens-copy { max-width: 520px; }
.lens-copy > span, .shape-list article > span { color: var(--red); display: block; font-size: 12px; font-weight: 800; letter-spacing: 0.12em; margin-bottom: 28px; }
.lens-copy h3 { font-size: clamp(39px, 4vw, 62px); line-height: 1.05; margin: 0; }
.lens-copy p { color: var(--ink-soft); font-size: 17px; line-height: 1.75; margin: 28px 0 0; }
.lens-image { overflow: hidden; }
.lens-image.landscape { aspect-ratio: 3 / 2; }
.lens-image.square { aspect-ratio: 1 / 1; max-width: 680px; }
.lens-image img { height: 100%; object-fit: cover; transition: transform 700ms ease; }
.lens-image:hover img { transform: scale(1.02); }

.shapes-section { background: var(--paper-deep); padding: 140px 6vw 150px; }
.shape-list { border-top: 1px solid var(--line); display: grid; grid-template-columns: repeat(3, 1fr); margin: 0 auto; max-width: 1320px; }
.shape-list article { border-right: 1px solid var(--line); padding: 48px 42px 0 0; }
.shape-list article + article { padding-left: 42px; }
.shape-list article:last-child { border-right: 0; }
.shape-list h3 { font-size: 36px; line-height: 1.12; margin: 0; }
.shape-list p { color: var(--ink-soft); font-size: 16px; line-height: 1.75; margin: 26px 0 0; }

.note-section { background: var(--ink); color: var(--white); display: grid; gap: 8vw; grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr); padding: 140px 8vw; }
.note-intro h2 { font-size: clamp(43px, 5vw, 72px); line-height: 1.08; margin: 0; }
.note-details { border-top: 1px solid rgba(255, 250, 241, 0.18); margin: 0; }
.note-details div { border-bottom: 1px solid rgba(255, 250, 241, 0.18); display: grid; gap: 24px; grid-template-columns: 130px 1fr; padding: 27px 0; }
.note-details dt { color: #df3a34; font-size: 11px; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; }
.note-details dd { color: rgba(255, 250, 241, 0.76); font-size: 15px; line-height: 1.7; margin: 0; }

.city-view-section { min-height: 54vh; overflow: hidden; position: relative; }
.city-view-section > img { height: 54vh; min-height: 520px; object-fit: cover; object-position: center 55%; }
.city-view-section::after { background: linear-gradient(0deg, rgba(0, 0, 0, 0.68), transparent 55%); content: ""; inset: 0; position: absolute; }
.city-view-caption { bottom: 58px; color: var(--white); left: 7vw; max-width: 600px; position: absolute; z-index: 1; }
.city-view-caption p:last-child { font-family: Georgia, "Times New Roman", serif; font-size: clamp(31px, 3.6vw, 54px); line-height: 1.12; margin: 0; }

.fit-section { display: grid; gap: 8vw; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); margin: 0 auto; max-width: 1440px; padding: 140px 7vw; }
.fit-columns { border-top: 1px solid var(--line); }
.fit-columns > div { border-bottom: 1px solid var(--line); padding: 35px 0 40px; }
.fit-columns h3 { font-family: inherit; font-size: 12px; font-weight: 800; letter-spacing: 0.12em; margin: 0; text-transform: uppercase; }
.fit-columns p { color: var(--ink-soft); font-size: 16px; line-height: 1.75; margin: 18px 0 0; }

.practical-section { background: var(--paper-deep); display: grid; gap: 8vw; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); padding: 130px 8vw; }
.practical-list { border-top: 1px solid var(--line); list-style: none; margin: 0; padding: 0; }
.practical-list li { border-bottom: 1px solid var(--line); color: var(--ink-soft); font-size: 15px; line-height: 1.7; padding: 20px 0 20px 28px; position: relative; }
.practical-list li::before { background: var(--red); content: ""; height: 5px; left: 0; position: absolute; top: 30px; width: 5px; }

.host-note { align-items: center; display: grid; gap: 8vw; grid-template-columns: minmax(300px, 0.75fr) minmax(0, 1.25fr); margin: 0 auto; max-width: 1320px; padding: 140px 6vw; }
.host-note-image { aspect-ratio: 4 / 5; max-width: 480px; overflow: hidden; }
.host-note-image img { height: 100%; object-fit: cover; }
.host-note-copy { max-width: 720px; }
.host-note-copy > p { color: var(--ink-soft); font-size: 17px; line-height: 1.75; margin: 30px 0 34px; }

.page-cta { background: var(--ink); color: var(--white); padding: 130px 7vw 140px; text-align: center; }
.page-cta > div { margin: 0 auto; max-width: 920px; }
.page-cta > div > p { color: rgba(255, 250, 241, 0.7); margin-left: auto; margin-right: auto; }
.cta-link { background: var(--red); display: inline-flex; font-size: 12px; font-weight: 800; justify-content: center; letter-spacing: 0.11em; margin-top: 38px; min-height: 58px; padding: 20px 30px; text-transform: uppercase; }

.site-footer { align-items: center; background: var(--ink); border-top: 1px solid rgba(255, 250, 241, 0.12); color: rgba(255, 250, 241, 0.7); display: flex; gap: 28px; justify-content: center; padding: 34px 32px; text-align: center; }
.site-footer strong { color: var(--white); font-family: Georgia, "Times New Roman", serif; font-size: 20px; }
.site-footer a { color: var(--white); font-size: 12px; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; }
.footer-links { align-items: center; display: flex; gap: 18px; }
.site-footer .footer-links a { color: rgba(255,250,241,.78); font-size: 10px; letter-spacing: .1em; }
.terms-link { display: inline-block; margin: 24px 0 0 22px; color: rgba(255,250,241,.74); font-size: 11px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }

[data-reveal] { opacity: 0; transform: translateY(20px); transition: opacity 700ms ease, transform 700ms ease; }
[data-reveal].is-visible { opacity: 1; transform: none; }

html:lang(zh-CN) body, html:lang(zh-CN) button { font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", ui-sans-serif, system-ui, sans-serif; }
html:lang(zh-CN) h1, html:lang(zh-CN) h2, html:lang(zh-CN) h3, html:lang(zh-CN) .city-view-caption p:last-child { font-family: "Songti SC", "Noto Serif CJK SC", "Source Han Serif SC", "STSong", serif; font-weight: 500; }
html:lang(zh-CN) .section-label, html:lang(zh-CN) .eyebrow, html:lang(zh-CN) .back-link, html:lang(zh-CN) .hero-actions a, html:lang(zh-CN) .host-note-copy a, html:lang(zh-CN) .cta-link, html:lang(zh-CN) .fit-columns h3 { letter-spacing: 0.08em; text-transform: none; }
html:lang(zh-CN) .hero-content h1 { font-size: clamp(52px, 5vw, 76px); line-height: 1.1; max-width: 1000px; }
html:lang(zh-CN) .hero-body, html:lang(zh-CN) .question-copy > p:last-child, html:lang(zh-CN) .selective-copy > p:last-child, html:lang(zh-CN) .lens-copy p, html:lang(zh-CN) .shape-list p, html:lang(zh-CN) .fit-columns p, html:lang(zh-CN) .host-note-copy > p, html:lang(zh-CN) .page-cta > div > p { line-height: 1.9; }

@media (max-width: 920px) {
  .site-header { padding: 18px 20px; }
  .brand small { display: none; }
  .header-actions { gap: 14px; }
  .back-label-full { display: none; }
  .back-label-short { display: inline; }
  .brand-icon { height: 32px; width: 32px; }
  .brand strong { font-size: 20px; }
  .experience-hero { height: auto; min-height: 620px; }
  .hero-image { object-position: 47% center; }
  .hero-shade { background: linear-gradient(0deg, rgba(0, 0, 0, 0.75), rgba(0, 0, 0, 0.12) 80%); }
  .hero-content { padding: 150px 24px 70px; width: 100%; }
  .hero-content h1 { font-size: clamp(52px, 14vw, 74px); max-width: 680px; }
  .hero-body { font-size: 16px; line-height: 1.6; max-width: 600px; }
  .scroll-cue { display: none; }
  .question-section, .note-section, .fit-section, .practical-section, .host-note { grid-template-columns: 1fr; }
  .question-section { padding: 96px 24px 110px; }
  .question-number { display: none; }
  .selective-section { padding: 90px 24px 100px; }
  .selective-copy { max-width: none; text-align: left; }
  .selective-copy > p:last-child { margin-left: 0; }
  .lenses-section, .shapes-section { padding: 100px 24px 110px; }
  .section-heading { margin-bottom: 68px; text-align: left; }
  .lens-row, .lens-row.reverse { gap: 38px; grid-template-columns: 1fr; margin-bottom: 90px; }
  .lens-row.reverse .lens-copy, .lens-row.reverse .lens-image { grid-column: auto; grid-row: auto; }
  .lens-row.reverse .lens-copy { order: 1; }
  .lens-row.reverse .lens-image { order: 2; }
  .lens-image.square { max-width: 600px; }
  .shape-list { grid-template-columns: 1fr; }
  .shape-list article, .shape-list article + article { border-bottom: 1px solid var(--line); border-right: 0; padding: 34px 0 42px; }
  .note-section, .fit-section, .practical-section { gap: 65px; padding: 100px 24px 110px; }
  .city-view-section, .city-view-section > img { height: 52vh; min-height: 440px; }
  .city-view-caption { bottom: 38px; left: 24px; right: 24px; }
  .host-note { gap: 55px; padding: 100px 24px 110px; }
  .host-note-image { max-width: 520px; }
  .page-cta { padding: 100px 24px 110px; }
}

@media (max-width: 560px) {
  .experience-hero { min-height: 760px; }
  .hero-content { padding-top: 140px; }
  .hero-content h1 { font-size: 51px; }
  html:lang(zh-CN) .hero-content h1 { font-size: 46px; }
  .hero-meta span { font-size: 11px; line-height: 1.5; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 20px; }
  .question-copy h2, .section-heading h2, .fit-heading h2, .practical-heading h2, .host-note-copy h2, .page-cta h2, .selective-copy h2, .note-intro h2 { font-size: 40px; }
  html:lang(zh-CN) .question-copy h2, html:lang(zh-CN) .section-heading h2, html:lang(zh-CN) .fit-heading h2, html:lang(zh-CN) .practical-heading h2, html:lang(zh-CN) .host-note-copy h2, html:lang(zh-CN) .page-cta h2, html:lang(zh-CN) .selective-copy h2, html:lang(zh-CN) .note-intro h2 { font-size: 36px; }
  .note-details div { grid-template-columns: 1fr; }
  .site-footer { align-items: flex-start; flex-direction: column; text-align: left; }
  .cta-link { width: 100%; }
}

@media (max-width: 380px) {
  .site-header { gap: 8px; padding-left: 12px; padding-right: 12px; }
  .brand { gap: 6px; }
  .brand-icon { height: 28px; width: 28px; }
  .brand strong { font-size: 14px; }
  .back-link, .lang-toggle { font-size: 10px; }
  .header-actions { gap: 11px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .hero-image { transform: none; }
  [data-reveal] { opacity: 1; transform: none; }
}