@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@300;400;500;600;700&family=Syne:wght@400;500;600;700&display=swap');

:root {
  --ink: #14121F;
  --gold: #E0B15C;
  --cream: #F3EFE6;
  --glass: rgba(243, 239, 230, 0.055);
  --line: rgba(243, 239, 230, 0.13);
  --rail: 238px;
  --r: 18px;
  --f-head: 'Syne', 'Manrope', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --f-body: 'Manrope', system-ui, -apple-system, 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--f-body);
  font-size: 17px;
  line-height: 1.78;
  color: var(--cream);
  background-color: var(--ink);
  background-image:
    radial-gradient(1100px 760px at 88% -12%, rgba(224, 177, 92, 0.17), transparent 62%),
    radial-gradient(900px 720px at 6% 108%, rgba(224, 177, 92, 0.11), transparent 66%);
  background-attachment: fixed;
  background-repeat: no-repeat;
  overflow-x: hidden;
}

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

a { color: inherit; }

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: 6px;
}

.grain {
  position: fixed;
  inset: 0;
  z-index: 5;
  pointer-events: none;
  opacity: 0.22;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.86' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 90;
  padding: 12px 20px;
  background: var(--gold);
  color: var(--ink);
  text-decoration: none;
  border-radius: 0 0 12px 0;
}
.skip:focus { left: 0; }

/* ---------- 左侧竖排导轨 ---------- */

.rail {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--rail);
  z-index: 60;
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 24px 16px 20px;
  background: rgba(20, 18, 31, 0.74);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-right: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  min-height: 48px;
  padding: 6px;
  text-decoration: none;
  color: var(--cream);
}

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  object-fit: cover;
  border: 1px solid rgba(224, 177, 92, 0.45);
}

.brand-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 5px rgba(224, 177, 92, 0.16);
  flex: 0 0 auto;
}

.brand-name {
  font-family: var(--f-head);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.rail-nav {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  scrollbar-width: none;
}
.rail-nav::-webkit-scrollbar { display: none; }

.rail-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.rail-nav a {
  display: flex;
  align-items: center;
  gap: 11px;
  min-height: 44px;
  padding: 10px 11px;
  border-radius: 12px;
  font-size: 16px;
  line-height: 1.4;
  text-decoration: none;
  color: rgba(243, 239, 230, 0.72);
  border: 1px solid transparent;
  transition: color 0.25s ease, background-color 0.25s ease, border-color 0.25s ease;
}

.rail-nav a:hover,
.rail-nav a:focus-visible {
  color: var(--ink);
  background: var(--gold);
  border-color: var(--gold);
}

.nav-ic {
  display: inline-flex;
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  opacity: 0.85;
}
.nav-ic svg { width: 16px; height: 16px; display: block; }

.rail-foot { padding: 0 6px; }
.rail-line {
  display: block;
  height: 2px;
  width: 44px;
  background: linear-gradient(90deg, var(--gold), transparent);
}

/* ---------- 主体 ---------- */

main {
  margin-left: var(--rail);
  padding: 0 clamp(18px, 4.6vw, 70px);
  max-width: 1240px;
}

main > article {
  position: relative;
  padding: clamp(44px, 7vh, 92px) 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 96px;
}

.hero {
  --py: 0px;
  min-height: 100svh;
  padding: clamp(56px, 11vh, 130px) 0 clamp(30px, 6vh, 64px);
  border-top: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  perspective: 1px;
}

.hero-ghost {
  position: absolute;
  top: clamp(8px, 9vh, 76px);
  left: -2vw;
  z-index: 0;
  font-family: var(--f-head);
  font-weight: 700;
  font-size: clamp(84px, 19vw, 250px);
  line-height: 0.86;
  letter-spacing: -0.03em;
  white-space: nowrap;
  color: rgba(243, 239, 230, 0.055);
  pointer-events: none;
  will-change: transform;
  transform: translate3d(0, calc(var(--py) * 0.42), 0);
}

.kicker {
  position: relative;
  z-index: 1;
  margin: 0 0 16px;
  font-size: 16px;
  letter-spacing: 0.3em;
  color: var(--gold);
}

.hero h1 {
  position: relative;
  z-index: 1;
  margin: 0 0 clamp(22px, 4.5vh, 44px);
  max-width: 17ch;
  font-family: var(--f-head);
  font-size: clamp(33px, 6.2vw, 82px);
  line-height: 1.03;
  letter-spacing: -0.02em;
  font-weight: 700;
}

.hero-figure {
  position: relative;
  z-index: 1;
  margin: 0;
  aspect-ratio: 16 / 8;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  background: linear-gradient(155deg, rgba(224, 177, 92, 0.22), rgba(243, 239, 230, 0.04));
  will-change: transform;
  transform: translate3d(0, calc(var(--py) * -0.12), 0);
}

.hero-media,
.closing-media {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--r);
}

/* ---------- 正文排版 ---------- */

main article h2 {
  font-family: var(--f-head);
  font-size: clamp(24px, 3.3vw, 40px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  margin: 0.28em 0 0.6em;
}

main article h3 {
  font-family: var(--f-head);
  font-size: clamp(19px, 2.2vw, 26px);
  line-height: 1.3;
  margin: 1.3em 0 0.45em;
}

main article > small,
.eyebrow {
  display: block;
  font-size: 16px;
  letter-spacing: 0.3em;
  color: var(--gold);
  margin: 0 0 6px;
}

main article p {
  margin: 0 0 1.1em;
  color: rgba(243, 239, 230, 0.84);
  max-width: 68ch;
}

main article a { color: var(--gold); text-underline-offset: 3px; }

main article ul,
main article ol {
  padding-left: 1.35em;
  color: rgba(243, 239, 230, 0.84);
  max-width: 68ch;
}
main article li { margin: 0.4em 0; }

main article blockquote {
  margin: 1.5em 0;
  padding: 16px 22px;
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--r) var(--r) 0;
  background: rgba(224, 177, 92, 0.07);
  color: rgba(243, 239, 230, 0.92);
}
main article blockquote p:last-child { margin-bottom: 0; }

main article > figure,
main article > aside,
main article .card {
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--r);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  margin: 1.5em 0;
  overflow: hidden;
}

main article > figure { padding: 0; }
main article > figure img { display: block; width: 100%; height: auto; }
main article > aside { padding: 18px 22px; }
main article > aside:last-child { margin-bottom: 0; }

main article table {
  width: 100%;
  border-collapse: collapse;
  font-size: 16px;
  margin: 1.4em 0;
  display: block;
  overflow-x: auto;
}
main article th,
main article td {
  border-bottom: 1px solid var(--line);
  padding: 11px 12px;
  text-align: left;
}
main article th { color: var(--gold); font-weight: 600; }

main article img { border-radius: var(--r); }

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 2em 0;
}

/* ---------- 收束区 ---------- */

.closing {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: clamp(18px, 3vw, 34px);
  align-items: start;
}

.closing-figure {
  margin: 1.2em 0 0;
  min-height: 200px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  background: linear-gradient(160deg, rgba(224, 177, 92, 0.2), rgba(243, 239, 230, 0.04));
}

.closing-aside {
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--r);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  padding: 10px 18px;
}

.jump-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.jump-list a {
  display: block;
  min-height: 44px;
  padding: 11px 2px;
  text-decoration: none;
  color: rgba(243, 239, 230, 0.78);
  border-bottom: 1px dashed rgba(243, 239, 230, 0.14);
  transition: color 0.2s ease, padding-left 0.2s ease;
}
.jump-list li:last-child a { border-bottom: 0; }
.jump-list a:hover,
.jump-list a:focus-visible {
  color: var(--gold);
  padding-left: 6px;
}

/* ---------- 页脚 ---------- */

.foot {
  margin-left: var(--rail);
  padding: clamp(44px, 7vh, 92px) clamp(18px, 4.6vw, 70px) 36px;
  border-top: 1px solid var(--line);
  background-image: linear-gradient(180deg, rgba(224, 177, 92, 0.09), transparent 62%);
}

.foot-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: clamp(22px, 4vw, 42px);
  border: 1px solid rgba(224, 177, 92, 0.38);
  border-radius: var(--r);
  background: rgba(224, 177, 92, 0.085);
  margin-bottom: clamp(28px, 5vh, 56px);
}

.cta-big {
  margin: 0;
  font-family: var(--f-head);
  font-size: clamp(27px, 4.8vw, 52px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--gold);
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 12px 28px;
  border-radius: 999px;
  background: var(--gold);
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
  transition: background-color 0.22s ease, transform 0.22s ease;
}
.cta-btn:hover { background: var(--cream); transform: translateY(-2px); }

.foot-cols {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: clamp(20px, 4vw, 48px);
  padding-bottom: clamp(24px, 4vh, 44px);
}

.foot-brand {
  margin: 0 0 10px;
  font-family: var(--f-head);
  font-size: 20px;
  font-weight: 700;
  color: var(--cream);
}

.foot-desc {
  margin: 0;
  max-width: 52ch;
  color: rgba(243, 239, 230, 0.7);
}

.foot-links ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
}

.foot-links a {
  display: block;
  min-height: 44px;
  padding: 11px 4px;
  text-decoration: none;
  color: rgba(243, 239, 230, 0.76);
  transition: color 0.2s ease;
}
.foot-links a:hover,
.foot-links a:focus-visible { color: var(--gold); }

.foot-legal {
  border-top: 1px solid var(--line);
  padding-top: 22px;
  text-align: center;
  color: rgba(243, 239, 230, 0.58);
  font-size: 16px;
}
.foot-legal p { margin: 0; }

/* ---------- 动效 ---------- */

.is-reveal {
  opacity: 0;
  transform: translate3d(0, 28px, 0);
  transition: opacity 0.7s ease, transform 0.75s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.is-reveal.in { opacity: 1; transform: none; }

/* ---------- 窄屏 ---------- */

@media (max-width: 940px) {
  .rail {
    position: sticky;
    top: 0;
    inset: auto;
    width: auto;
    flex-direction: row;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    background: rgba(20, 18, 31, 0.92);
  }

  .brand { flex: 0 0 auto; min-height: 44px; padding: 4px; }
  .brand-name { font-size: 17px; }

  .rail-nav {
    flex: 1 1 auto;
    min-width: 0;
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  .rail-nav ul { flex-direction: row; gap: 2px; padding-bottom: 2px; }
  .rail-nav a { white-space: nowrap; padding: 10px 12px; }

  .rail-foot { display: none; }

  main,
  .foot { margin-left: 0; }

  main > article { scroll-margin-top: 112px; }

  .hero { min-height: 0; padding-top: 46px; perspective: none; }
  .hero h1 { max-width: none; }
  .hero-ghost { font-size: clamp(60px, 18vw, 130px); top: 6px; }
  .hero-figure { aspect-ratio: 16 / 10; }

  .closing { grid-template-columns: 1fr; }
  .foot-cols { grid-template-columns: 1fr; }
  .foot-links ul { grid-template-columns: 1fr; }
  .foot-cta { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .is-reveal { opacity: 1; transform: none; transition: none; }
  .hero-ghost,
  .hero-figure { transform: none !important; }
  .cta-btn:hover { transform: none; }
}

button[aria-expanded]{min-width:44px;min-height:44px}