:root {
  --navy: #25365f;
  --navy-deep: #141d37;
  --orange: #e65d2f;
  --sky: #95c9ec;
  --paper: #f4f0e8;
  --paper-light: #fbfaf6;
  --ink: #20233a;
  --line: rgba(37, 54, 95, 0.22);
  --shadow: 0 24px 70px rgba(13, 21, 45, 0.22);
}

@font-face {
  font-family: "Fira Sans";
  src: url("fonts/FiraSans-Regular.otf") format("opentype");
  font-weight: 400;
  font-style: normal;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Fira Sans", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }

.language-zh { display: none; }
html[data-language="zh"] .language-en { display: none !important; }
html[data-language="zh"] .language-zh { display: initial; }

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

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  transform: translateY(-180%);
  padding: 12px 18px;
  border-radius: 4px;
  color: #fff;
  background: var(--navy);
  font-weight: 700;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: absolute;
  z-index: 20;
  top: 0;
  right: 0;
  left: 0;
  display: grid;
  grid-template-columns: minmax(170px, 1fr) auto auto;
  align-items: center;
  gap: 30px;
  padding: 22px clamp(20px, 5vw, 72px);
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.28);
  background: linear-gradient(180deg, rgba(14, 22, 45, 0.76), rgba(14, 22, 45, 0));
}
.wordmark { display: grid; width: fit-content; text-decoration: none; }
.wordmark strong { font: 700 1.35rem/1 Georgia, serif; letter-spacing: 0.03em; }
.wordmark > span { margin-top: 4px; font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; }
.site-nav { display: flex; gap: 24px; }
.site-nav a { text-decoration: none; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; }
.site-nav a:hover, .site-nav a:focus-visible { color: #ffd6c8; }
.language-toggle { display: inline-flex; padding: 3px; border: 1px solid rgba(255,255,255,.65); border-radius: 999px; background: rgba(20,29,55,.58); }
.language-toggle button { min-width: 42px; min-height: 34px; padding: 6px 10px; border: 0; border-radius: 999px; color: #fff; background: transparent; cursor: pointer; font: 700 .72rem/1 inherit; }
.language-toggle button[aria-pressed="true"] { color: var(--navy-deep); background: #fff; }

.hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  align-items: end;
  overflow: hidden;
  color: #fff;
  background: var(--navy-deep);
}
.hero-image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hero-wash { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(14,22,45,.94) 0 34%, rgba(14,22,45,.47) 68%, rgba(14,22,45,.32)), linear-gradient(0deg, rgba(14,22,45,.9), transparent 56%); }
.hero-content { position: relative; z-index: 2; width: min(760px, 88vw); margin: 0 0 clamp(72px, 10vh, 112px) clamp(20px, 7vw, 112px); }
.eyebrow, .section-kicker { margin: 0 0 18px; color: var(--orange); font-size: .72rem; font-weight: 800; letter-spacing: .17em; text-transform: uppercase; }
.hero h1 { max-width: 720px; margin: 0; font: 400 clamp(4.4rem, 11vw, 9.4rem)/.78 Georgia, serif; letter-spacing: -.055em; }
.hero h1 small { display: block; margin-top: 22px; font: 600 clamp(1.35rem, 3vw, 2.4rem)/1.05 "Fira Sans", Arial, sans-serif; letter-spacing: .01em; }
.hero-intro { max-width: 690px; margin: 28px 0 0; color: rgba(255,255,255,.88); font-size: clamp(1rem, 1.6vw, 1.26rem); line-height: 1.62; }
.hero-actions, .explore-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 12px 19px; border: 1px solid currentColor; border-radius: 3px; text-decoration: none; font-size: .78rem; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; }
.button-primary { color: #fff; border-color: var(--orange); background: var(--orange); }
.button-secondary { color: inherit; background: transparent; }
.button:hover, .button:focus-visible { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(0,0,0,.2); }
.hero-index { position: absolute; right: clamp(20px, 5vw, 72px); bottom: 28px; z-index: 2; font-size: .68rem; font-weight: 700; letter-spacing: .16em; }

.section-inner { width: min(1240px, calc(100% - 40px)); margin: 0 auto; }
.section-paper {
  background-color: var(--paper);
  background-image:
    repeating-linear-gradient(0deg, rgba(37,54,95,.018) 0, rgba(37,54,95,.018) 1px, transparent 1px, transparent 4px),
    repeating-linear-gradient(90deg, rgba(230,93,47,.012) 0, rgba(230,93,47,.012) 1px, transparent 1px, transparent 5px);
}
.opening { padding: clamp(80px, 11vw, 150px) 0; }
.opening-grid, .context-grid { display: grid; grid-template-columns: minmax(0, .88fr) minmax(300px, 1.12fr); gap: clamp(45px, 8vw, 120px); }
.opening h2, .journeys h2, .voices h2, .explore h2, .context h2 { margin: 0; font: 400 clamp(2.4rem, 5.2vw, 5.1rem)/.98 Georgia, serif; letter-spacing: -.045em; }
.opening-copy, .context-grid > div:last-child { font-size: 1.08rem; line-height: 1.78; }
.opening-copy p:first-child, .context-grid p:first-child { margin-top: 0; }

.journeys { padding: clamp(80px, 10vw, 140px) 0; color: #fff; background: var(--navy-deep); }
.section-kicker-light { color: var(--sky); }
.journeys h2 { max-width: 820px; }
.journey-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 62px; }
.journey-card { position: relative; min-height: 490px; display: flex; flex-direction: column; padding: 0 28px 28px; overflow: hidden; border: 1px solid rgba(255,255,255,.22); background: rgba(255,255,255,.06); }
.journey-card img { width: calc(100% + 56px); height: 210px; margin: 0 -28px 28px; object-fit: cover; image-rendering: auto; }
.journey-number { color: var(--orange); font: 700 .7rem/1 "Fira Sans", sans-serif; letter-spacing: .14em; }
.journey-card h3 { margin: 12px 0 10px; font: 400 2rem/1.05 Georgia, serif; }
.journey-card p { flex: 1; margin: 0; color: rgba(255,255,255,.72); line-height: 1.58; }
.journey-card a { display: flex; justify-content: space-between; gap: 16px; margin-top: 24px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,.22); color: #fff; text-decoration: none; font-size: .76rem; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; }

.voices { padding: clamp(80px, 10vw, 140px) 0; }
.voices-heading { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, .7fr); align-items: end; gap: 60px; }
.voices-heading > p { margin: 0; font-size: 1.05rem; line-height: 1.72; }
.voice-strip { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 10px; margin-top: 56px; }
.voice-strip article { position: relative; min-height: 270px; overflow: hidden; background: var(--navy); }
.voice-strip img { width: 100%; height: 100%; object-fit: cover; }
.voice-strip span { position: absolute; inset: auto 0 0; padding: 30px 14px 14px; color: #fff; background: linear-gradient(transparent, rgba(20,29,55,.9)); font-weight: 700; }

.explore { padding: clamp(80px, 10vw, 130px) 0 0; color: #fff; background: var(--navy); }
.explore-heading { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, .65fr); gap: 60px; align-items: end; }
.explore-heading > p { margin: 0; color: rgba(255,255,255,.74); line-height: 1.7; }
.tour-frame-wrap { width: min(1460px, calc(100% - 24px)); height: min(78vh, 860px); min-height: 620px; margin: 56px auto 0; overflow: hidden; border: 1px solid rgba(255,255,255,.44); border-radius: 10px 10px 0 0; box-shadow: 0 30px 80px rgba(4,8,20,.4); background: #000; }
.tour-frame { width: 100%; height: 100%; border: 0; }
.explore-actions { width: min(1460px, calc(100% - 24px)); margin: 0 auto; padding: 22px clamp(16px, 4vw, 50px) 34px; background: var(--navy-deep); }

.context { padding: clamp(80px, 10vw, 140px) 0; }
.note { padding: 18px 20px; border-left: 3px solid var(--orange); background: rgba(255,255,255,.7); color: rgba(32,35,58,.75); font-size: .92rem; }
.site-footer { display: flex; justify-content: space-between; gap: 30px; padding: 34px clamp(20px, 5vw, 72px); color: #fff; background: var(--navy-deep); }
.site-footer > div { display: grid; gap: 4px; }
.site-footer span { color: rgba(255,255,255,.65); font-size: .82rem; }
.site-footer a { align-self: center; text-decoration: none; font-size: .76rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }

:focus-visible { outline: 3px solid #ffd0bf; outline-offset: 4px; }

@media (max-width: 900px) {
  .site-header { grid-template-columns: 1fr auto; }
  .site-nav { display: none; }
  .opening-grid, .context-grid, .voices-heading, .explore-heading { grid-template-columns: 1fr; gap: 34px; }
  .journey-grid { grid-template-columns: 1fr; }
  .journey-card { min-height: 0; }
  .voice-strip { grid-template-columns: repeat(3, 1fr); }
  .tour-frame-wrap { min-height: 68vh; }
}

@media (max-width: 600px) {
  .site-header { gap: 12px; padding: 16px; }
  .wordmark strong { font-size: 1.08rem; }
  .wordmark > span { font-size: .58rem; }
  .language-toggle button { min-width: 38px; padding-inline: 7px; }
  .hero { min-height: 820px; }
  .hero-wash { background: linear-gradient(0deg, rgba(14,22,45,.97) 0 42%, rgba(14,22,45,.42) 78%); }
  .hero-content { width: calc(100% - 32px); margin: 0 16px 70px; }
  .hero h1 { font-size: clamp(4rem, 23vw, 6rem); }
  .hero-actions .button { width: 100%; }
  .section-inner { width: min(100% - 30px, 1240px); }
  .voice-strip { grid-template-columns: repeat(2, 1fr); }
  .voice-strip article { min-height: 220px; }
  .tour-frame-wrap { width: 100%; min-height: 76vh; border-radius: 0; border-inline: 0; }
  .explore-actions { width: 100%; }
  .explore-actions .button { width: 100%; }
  .site-footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}