:root {
  --deep: #0b2119;
  --deep-2: #123126;
  --ink: #1c2b22;
  --cream: #f4eddd;
  --paper: #f7f0e2;
  --warm: #efe1c9;
  --gold: #c1a16a;
  --gold-soft: #ddc79f;
  --muted: #6f6b58;
  --wine: #8e4037;
  --serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", "STSong", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: auto;
  -webkit-text-size-adjust: 100%;
  background: var(--deep);
  scrollbar-width: none;
}

html::-webkit-scrollbar, body::-webkit-scrollbar { display: none; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--deep);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  overscroll-behavior-y: none;
  overflow-x: hidden;
}

body.no-scroll { overflow: hidden; }
img { display: block; width: 100%; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
button, a { touch-action: manipulation; }

.progress {
  position: fixed;
  inset: 0 0 auto;
  height: 2px;
  z-index: 1000;
  pointer-events: none;
  background: rgba(255,255,255,.06);
}

.progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--gold), #eed9b2);
  box-shadow: 0 0 10px rgba(222,197,151,.6);
}

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  color: var(--cream);
  background: var(--deep);
  isolation: isolate;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 50%;
  z-index: -3;
  animation: heroDrift 18s ease-in-out infinite alternate;
  filter: saturate(.95) brightness(.9);
}

.hero-shade {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(180deg, rgba(5,18,13,.16) 0%, rgba(5,18,13,0) 20%, rgba(5,18,13,.04) 38%, rgba(5,18,13,.2) 58%, rgba(5,18,13,.82) 100%),
    linear-gradient(90deg, rgba(5,18,13,.18), transparent 58%, rgba(5,18,13,.12));
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  box-shadow: inset 0 0 130px rgba(3,12,8,.48);
  pointer-events: none;
}

@keyframes heroDrift {
  from { transform: scale(1.005) translate3d(0, 0, 0); }
  to { transform: scale(1.045) translate3d(-.35%, -.55%, 0); }
}

.hero-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: calc(22px + env(safe-area-inset-top)) 7vw 0;
}

.brand-mini {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(246,233,210,.9);
  font-size: 10px;
  letter-spacing: .12em;
  white-space: nowrap;
}

.brand-line {
  width: 22px;
  height: 1px;
  background: var(--gold-soft);
}

.hero-en {
  padding-top: 2px;
  margin-right: 54px;
  color: rgba(236,218,185,.7);
  font-size: 9px;
  letter-spacing: .18em;
  white-space: nowrap;
}

.hero-copy {
  position: relative;
  z-index: 2;
  width: 100%;
  margin-top: auto;
  padding: 0 7vw calc(104px + env(safe-area-inset-bottom));
}

.eyebrow {
  margin: 0 0 20px;
  color: var(--gold);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: .24em;
  line-height: 1.6;
  text-transform: uppercase;
}

.eyebrow.light { color: var(--gold-soft); }

.hero-copy .eyebrow {
  margin-bottom: 19px;
  color: rgba(234,213,176,.84);
  letter-spacing: .27em;
}

.hero h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(54px, 18.4vw, 92px);
  font-weight: 700;
  letter-spacing: .055em;
  line-height: 1.06;
  color: #fbf2df;
  text-shadow: 0 4px 26px rgba(0,0,0,.45);
}

.hero-sub {
  display: flex;
  align-items: center;
  gap: 13px;
  margin-top: 19px;
}

.hero-sub span {
  width: 34px;
  height: 1px;
  background: var(--gold);
}

.hero-sub p {
  margin: 0;
  color: rgba(244,230,204,.92);
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: .17em;
}

.hero-date {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-top: 34px;
  padding-top: 17px;
  border-top: 1px solid rgba(219,194,151,.42);
  color: rgba(244,230,204,.88);
}

.hero-date strong {
  font-family: var(--serif);
  font-size: 23px;
  font-weight: 500;
  letter-spacing: .04em;
}

.hero-date span {
  color: rgba(240,222,191,.72);
  font-size: 10px;
  letter-spacing: .09em;
}

.scroll-cue {
  position: absolute;
  left: 50%;
  bottom: calc(66px + env(safe-area-inset-bottom));
  z-index: 3;
  transform: translateX(-50%);
  color: rgba(240,222,191,.63);
  font-size: 9px;
  letter-spacing: .16em;
  text-align: center;
  white-space: nowrap;
}

.scroll-cue span {
  display: block;
  width: 1px;
  height: 24px;
  margin: 0 auto 9px;
  background: linear-gradient(to bottom, transparent, var(--gold-soft));
  animation: cue 2.1s ease-in-out infinite;
}

.scroll-cue p { margin: 0; }

@keyframes cue {
  0%, 100% { transform: translateY(-4px); opacity: .25; }
  45% { transform: translateY(4px); opacity: 1; }
}

.section-paper {
  position: relative;
  color: var(--ink);
  background:
    radial-gradient(circle at 18% 8%, rgba(255,255,255,.8), transparent 34%),
    radial-gradient(circle at 88% 65%, rgba(193,161,106,.1), transparent 32%),
    repeating-linear-gradient(115deg, rgba(97,76,38,.018) 0 1px, transparent 1px 5px),
    var(--paper);
  overflow: hidden;
}

.section-dark {
  position: relative;
  color: var(--cream);
  background:
    radial-gradient(circle at 86% 12%, rgba(129,111,70,.15), transparent 30%),
    radial-gradient(circle at 10% 72%, rgba(69,101,76,.12), transparent 34%),
    linear-gradient(152deg, #0a2018 0%, #123126 62%, #0c251c 100%);
}

.section-warm {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 27%, rgba(255,252,244,.9), transparent 34%),
    linear-gradient(160deg, #f5ead8 0%, #edddc1 100%);
}

.section-inner {
  position: relative;
  width: 100%;
  max-width: 660px;
  margin: 0 auto;
  padding: 100px 7vw;
}

.section-inner.narrow { max-width: 570px; }

.section-title {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(36px, 9.2vw, 50px);
  font-weight: 600;
  letter-spacing: .045em;
  line-height: 1.42;
}

.section-title em { color: #9c7640; font-style: normal; }
.section-title i { padding: 0 .08em; color: var(--gold); font-style: normal; }
.section-title.light { color: #f6eddb; }
.section-title.light em { color: var(--gold-soft); }

.section-head { margin-bottom: 42px; }
.section-head.center { margin-bottom: 32px; text-align: center; }

.lead {
  max-width: 470px;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 2;
  letter-spacing: .03em;
}

.lead.light { color: rgba(222,224,209,.7); }
.section-head.center .lead { margin-left: auto; margin-right: auto; }