/* ============================================================
   超圣娱乐会馆 · 共享样式 /assets/site.css
   夜宴灯影体系：墨蓝为底，鎏金为线，朱砂落款，青玉点题
   ============================================================ */

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

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

body,
h1, h2, h3, h4, h5, h6,
p, figure, blockquote, dl, dd, ul, ol {
  margin: 0;
}

ul, ol { padding: 0; }
ul[class], ol[class] { list-style: none; }

a { color: inherit; text-decoration: none; }

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

img, svg, video, picture {
  display: block;
  max-width: 100%;
}

[hidden] { display: none !important; }

/* ---------- Tokens ---------- */
:root {
  --c-ink: #0A1524;
  --c-ink-deep: #060E19;
  --c-veil: #10233F;
  --c-gold: #D4A64A;
  --c-gold-soft: #F2DCA0;
  --c-cinnabar: #C44936;
  --c-jade: #3F8B84;
  --c-ivory: #F5EFE2;
  --c-mist: #9DA8B8;
  --c-line: #1C3554;

  --font-display: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-num: "Bodoni Moda", "Didot", "Playfair Display", Georgia, "Times New Roman", serif;

  --max-w: 1320px;
  --gutter: clamp(18px, 4.2vw, 64px);
  --ease: cubic-bezier(.22, .61, .36, 1);
  --dur: .34s;
  --hair: 1px solid rgba(212, 166, 74, .3);
  --hair-dim: 1px solid rgba(28, 53, 84, .9);
}

/* ---------- Base ---------- */
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(ellipse at 78% -8%, rgba(212, 166, 74, .12), transparent 56%),
    radial-gradient(ellipse at 6% 104%, rgba(63, 139, 132, .1), transparent 58%),
    var(--c-ink);
  background-attachment: fixed;
  color: var(--c-ivory);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main { display: block; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.08;
  color: var(--c-ivory);
}

h1 { font-size: clamp(38px, 6vw, 84px); line-height: 1.04; }
h2 { font-size: clamp(26px, 3.6vw, 50px); }
h3 { font-size: clamp(19px, 2.1vw, 26px); letter-spacing: 0; line-height: 1.25; }
h4 { font-size: 17px; letter-spacing: .02em; line-height: 1.4; }

p { max-width: 68ch; }

::selection {
  background: var(--c-gold);
  color: var(--c-ink);
}

:focus-visible {
  outline: 2px solid var(--c-gold-soft);
  outline-offset: 3px;
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  left: 14px;
  top: -80px;
  z-index: 200;
  padding: 10px 20px;
  background: var(--c-gold);
  color: var(--c-ink);
  font-size: 13px;
  letter-spacing: .12em;
  transition: top .24s var(--ease);
}

.skip-link:focus {
  top: 14px;
}

/* ---------- Layout utilities ---------- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container--narrow {
  max-width: 880px;
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 34px);
}

/* ---------- Shared components ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: .2em;
  line-height: 1.6;
  color: var(--c-gold-soft);
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--c-gold);
  flex: none;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 20px 28px;
  padding-bottom: 18px;
  margin-bottom: clamp(26px, 4vw, 52px);
  border-bottom: var(--hair-dim);
}

.section-head__num {
  font-family: var(--font-num);
  font-weight: 600;
  font-size: clamp(30px, 4.2vw, 52px);
  line-height: .9;
  color: var(--c-gold);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.02em;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 46px;
  padding: 11px 26px;
  border: 1px solid var(--c-gold);
  color: var(--c-gold-soft);
  background: transparent;
  font-size: 14px;
  letter-spacing: .12em;
  line-height: 1.4;
  text-align: center;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.btn:hover,
.btn:focus-visible {
  background: var(--c-gold);
  border-color: var(--c-gold);
  color: var(--c-ink);
}

.btn--solid {
  background: var(--c-gold);
  border-color: var(--c-gold);
  color: var(--c-ink);
}

.btn--solid:hover,
.btn--solid:focus-visible {
  background: var(--c-gold-soft);
  border-color: var(--c-gold-soft);
}

.btn--ghost {
  border-color: rgba(157, 168, 184, .5);
  color: var(--c-mist);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  background: transparent;
  border-color: var(--c-ivory);
  color: var(--c-ivory);
}

.btn--jade {
  border-color: var(--c-jade);
  color: #A6D6D1;
}

.btn--jade:hover,
.btn--jade:focus-visible {
  background: var(--c-jade);
  border-color: var(--c-jade);
  color: var(--c-ink-deep);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  letter-spacing: .08em;
  line-height: 1.7;
  color: var(--c-mist);
}

.breadcrumb a {
  transition: color var(--dur) var(--ease);
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--c-gold-soft);
}

.breadcrumb__sep {
  color: var(--c-line);
}

.breadcrumb [aria-current="page"] {
  color: var(--c-ivory);
}

.prose {
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.9;
  color: var(--c-ivory);
}

.prose > * + * { margin-top: 1.05em; }

.prose h2,
.prose h3 {
  margin-top: 1.9em;
  color: var(--c-gold-soft);
}

.prose h2 { font-size: clamp(24px, 3vw, 38px); }
.prose h3 { font-size: clamp(19px, 2.2vw, 25px); }

.prose ul,
.prose ol {
  padding-left: 1.3em;
  list-style: disc;
}

.prose ol { list-style: decimal; }
.prose li + li { margin-top: .5em; }

.prose a {
  color: var(--c-gold);
  border-bottom: 1px solid rgba(212, 166, 74, .45);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.prose a:hover {
  color: var(--c-gold-soft);
  border-color: var(--c-gold-soft);
}

.prose blockquote {
  padding: 6px 0 6px 22px;
  border-left: 2px solid var(--c-cinnabar);
  color: var(--c-mist);
  font-family: var(--font-display);
  font-size: 19px;
  line-height: 1.7;
}

.prose code {
  font-family: var(--font-num);
  font-size: .95em;
  color: var(--c-gold-soft);
  background: rgba(28, 53, 84, .6);
  padding: 1px 6px;
}

.numeral {
  display: inline-block;
  font-family: var(--font-num);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.03em;
  line-height: .9;
  color: var(--c-gold);
}

.stamp {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 11px;
  border: 1px solid var(--c-cinnabar);
  background: rgba(196, 73, 54, .1);
  color: #E2877A;
  font-size: 11.5px;
  letter-spacing: .16em;
  line-height: 1.4;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: var(--hair-dim);
  color: var(--c-mist);
  font-size: 11.5px;
  letter-spacing: .12em;
  line-height: 1.5;
}

.tag--jade {
  border-color: rgba(63, 139, 132, .6);
  background: rgba(63, 139, 132, .12);
  color: #A6D6D1;
}

.tag--gold {
  border-color: rgba(212, 166, 74, .55);
  background: rgba(212, 166, 74, .1);
  color: var(--c-gold-soft);
}

/* ---------- Media frame (image container base) ---------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border: var(--hair-dim);
  background:
    repeating-linear-gradient(135deg, rgba(28, 53, 84, .55) 0 1px, transparent 1px 14px),
    linear-gradient(160deg, var(--c-veil), var(--c-ink-deep));
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 72% 18%, rgba(212, 166, 74, .18), transparent 62%);
  pointer-events: none;
}

.media-frame > img,
.media-frame > picture,
.media-frame > picture > img,
.media-frame > video,
.media-frame__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame--cover { aspect-ratio: 16 / 10; }
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--soft { aspect-ratio: 4 / 3; }

.media-frame--jade {
  background:
    repeating-linear-gradient(135deg, rgba(28, 53, 84, .5) 0 1px, transparent 1px 14px),
    linear-gradient(160deg, #123029, var(--c-ink-deep));
}

.media-frame--jade::after {
  background: radial-gradient(circle at 30% 22%, rgba(63, 139, 132, .3), transparent 64%);
}

.media-frame__caption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: .1em;
  line-height: 1.7;
  color: var(--c-mist);
}

/* ---------- Reveal ---------- */
html[data-js] [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}

html[data-js] [data-reveal][data-revealed] {
  opacity: 1;
  transform: none;
}

/* ============================================================
   Header · 双层横匾 + 门廊
   ============================================================ */
.site-header {
  position: relative;
  z-index: 60;
  background: linear-gradient(180deg, rgba(6, 14, 25, .99), rgba(10, 21, 36, .97));
  border-bottom: 1px solid rgba(28, 53, 84, 1);
}

.header-rail {
  background: rgba(16, 35, 63, .62);
  border-bottom: var(--hair-dim);
}

.header-rail__inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding: 9px var(--gutter);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
}

.brand-mark {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px 14px;
  max-width: none;
  line-height: 1.4;
}

.brand-mark__name {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--c-gold-soft);
}

.brand-mark__divider {
  width: 34px;
  height: 1px;
  background: var(--c-gold);
  opacity: .65;
  flex: none;
}

.brand-mark__tagline {
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--c-mist);
}

.rail-aside {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.rail-note {
  max-width: none;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-mist);
}

.cta-line {
  display: inline-block;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(212, 166, 74, .55);
  color: var(--c-gold-soft);
  font-size: 12.5px;
  letter-spacing: .12em;
  line-height: 1.5;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.cta-line:hover,
.cta-line:focus-visible {
  color: #FFFFFF;
  border-color: var(--c-gold-soft);
}

.header-main__inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding: 0 var(--gutter);
  min-height: 64px;
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.6vw, 36px);
}

.header-seal {
  margin-left: auto;
  flex: none;
  font-size: 11.5px;
  letter-spacing: .22em;
  color: var(--c-mist);
  border-left: var(--hair);
  padding-left: 16px;
  line-height: 1.6;
}

/* 移动端按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 8px 15px 8px 12px;
  border: 1px solid rgba(212, 166, 74, .48);
  color: var(--c-gold-soft);
  font-size: 12.5px;
  letter-spacing: .16em;
  line-height: 1.5;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
  border-color: var(--c-gold);
  background: rgba(212, 166, 74, .1);
}

.nav-toggle__lines {
  display: grid;
  gap: 4px;
  width: 16px;
  flex: none;
}

.nav-toggle__lines span {
  display: block;
  height: 1px;
  background: currentColor;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__lines span:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__lines span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__lines span:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

/* 导航 */
.primary-nav {
  flex: 1 1 auto;
  min-width: 0;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 2px clamp(6px, 1.7vw, 28px);
}

.nav-list__item {
  display: flex;
  align-items: stretch;
}

.nav-list__link {
  position: relative;
  display: inline-block;
  padding: 20px 2px;
  font-size: 14.5px;
  letter-spacing: .1em;
  line-height: 1.5;
  color: var(--c-ivory);
  transition: color var(--dur) var(--ease);
}

.nav-list__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 14px;
  height: 1px;
  background: var(--c-gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .36s var(--ease), background .36s var(--ease);
}

.nav-list__link:hover,
.nav-list__link:focus-visible {
  color: var(--c-gold-soft);
}

.nav-list__link:hover::after,
.nav-list__link:focus-visible::after {
  transform: scaleX(1);
}

.nav-list__link[aria-current="page"] {
  color: var(--c-gold-soft);
}

.nav-list__link[aria-current="page"]::after {
  transform: scaleX(1);
  height: 2px;
  background: var(--c-cinnabar);
}

/* ============================================================
   Footer · 后厅
   ============================================================ */
.site-footer {
  margin-top: auto;
  position: relative;
  background: linear-gradient(180deg, var(--c-veil) 0%, #08111D 72%, var(--c-ink-deep) 100%);
  border-top: 1px solid rgba(212, 166, 74, .34);
  color: var(--c-ivory);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-gold), transparent);
  opacity: .55;
}

.footer-top__inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding: clamp(38px, 6vw, 72px) var(--gutter) clamp(30px, 4.6vw, 54px);
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.45fr;
  gap: clamp(26px, 4vw, 56px);
  align-items: start;
}

.footer-brand__name {
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 27px);
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--c-gold-soft);
  line-height: 1.3;
}

.footer-brand__summary {
  margin-top: 12px;
  max-width: 30ch;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--c-mist);
}

.stamp-top {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 24px;
  padding: 9px 16px;
  border: 1px solid rgba(212, 166, 74, .5);
  color: var(--c-gold-soft);
  font-size: 12px;
  letter-spacing: .16em;
  line-height: 1.5;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.stamp-top:hover,
.stamp-top:focus-visible {
  background: var(--c-gold);
  border-color: var(--c-gold);
  color: var(--c-ink);
}

.stamp-top__glyph {
  font-family: var(--font-num);
  font-size: 15px;
  line-height: 1;
}

.footer-nav__title,
.footer-contact__title {
  font-size: 11.5px;
  letter-spacing: .22em;
  line-height: 1.6;
  color: var(--c-gold);
  padding-bottom: 10px;
  margin-bottom: 16px;
  border-bottom: var(--hair-dim);
}

.footer-nav__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-nav__list a {
  display: inline-block;
  padding: 5px 0;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--c-ivory);
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.footer-nav__list a:hover,
.footer-nav__list a:focus-visible {
  color: var(--c-gold-soft);
  padding-left: 8px;
}

.footer-contact__list {
  display: flex;
  flex-direction: column;
}

.footer-contact__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 6px 12px;
  padding: 9px 0;
  border-bottom: 1px solid rgba(28, 53, 84, .55);
}

.footer-contact__label {
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--c-mist);
  line-height: 1.7;
}

.footer-contact__value {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-ivory);
  word-break: break-word;
}

.copy-btn {
  flex: none;
  padding: 3px 9px;
  border: 1px solid rgba(212, 166, 74, .36);
  color: var(--c-gold-soft);
  font-size: 11.5px;
  letter-spacing: .1em;
  line-height: 1.6;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.copy-btn:hover,
.copy-btn:focus-visible {
  background: rgba(212, 166, 74, .16);
  border-color: var(--c-gold);
}

.copy-btn[data-copied] {
  color: #A6D6D1;
  border-color: rgba(63, 139, 132, .75);
  background: rgba(63, 139, 132, .14);
}

.footer-contact__note {
  margin-top: 14px;
  max-width: 34ch;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--c-mist);
}

.footer-base {
  border-top: var(--hair-dim);
}

.footer-base__inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding: 18px var(--gutter) 26px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 28px;
  font-size: 12px;
  letter-spacing: .08em;
  line-height: 1.7;
  color: var(--c-mist);
}

.footer-base__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.footer-base__legal a {
  transition: color var(--dur) var(--ease);
}

.footer-base__legal a:hover,
.footer-base__legal a:focus-visible {
  color: var(--c-gold-soft);
}

.footer-base__icp {
  max-width: none;
}

.footer-base__copyright {
  margin-left: auto;
  max-width: none;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1180px) {
  .header-seal { display: none; }
}

@media (max-width: 1023px) {
  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }

  .footer-top__inner {
    grid-template-columns: 1fr 1fr;
    row-gap: clamp(28px, 5vw, 44px);
  }

  .footer-brand { grid-column: 1 / -1; }
  .footer-brand__summary { max-width: 46ch; }
}

@media (max-width: 899px) {
  .site-header { position: relative; }

  .header-rail__inner {
    padding-block: 10px;
    gap: 6px 16px;
  }

  .brand-mark__tagline { display: none; }
  .brand-mark__divider { width: 22px; }
  .rail-note { display: none; }

  .header-main__inner {
    flex-wrap: wrap;
    align-items: center;
    gap: 0;
    padding-block: 10px;
    min-height: 0;
  }

  .nav-toggle { display: inline-flex; }

  .primary-nav {
    display: none;
    flex-basis: 100%;
    width: 100%;
    flex-grow: 0;
    margin-top: 10px;
    border-top: var(--hair-dim);
  }

  .primary-nav[data-open] {
    display: block;
    animation: nav-fade .3s var(--ease) both;
  }

  @keyframes nav-fade {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: none; }
  }

  .nav-list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
  }

  .nav-list__item { display: block; }

  .nav-list__link {
    display: block;
    width: 100%;
    padding: 14px 2px;
    font-size: 15px;
    border-bottom: 1px solid rgba(28, 53, 84, .7);
  }

  .nav-list__link::after { display: none; }

  .nav-list__link[aria-current="page"] {
    color: var(--c-gold-soft);
    padding-left: 14px;
    box-shadow: inset 2px 0 0 var(--c-cinnabar);
  }

  .nav-list__item:last-child .nav-list__link { border-bottom: 0; }

  .section-head {
    grid-template-columns: 1fr;
    align-items: start;
  }
}

@media (max-width: 719px) {
  .footer-top__inner {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .footer-brand__summary,
  .footer-contact__note { max-width: none; }

  .footer-base__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .footer-base__copyright { margin-left: 0; }
}

@media (max-width: 640px) {
  .grid-12 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .footer-contact__item {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .footer-contact__item .copy-btn {
    grid-column: 2;
    justify-self: start;
    margin-top: 2px;
  }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }

  html[data-js] [data-reveal] {
    opacity: 1;
    transform: none;
  }
}