/* ==========================================================================
   金沙平台官网 · 共享样式 /assets/site.css
   深墨台面 + 暖金结构线 + 青蓝焦点 + 珊瑚橙行动点
   ========================================================================== */

:root {
  --ink: #12161C;
  --ink-2: #1D2A33;
  --slate: #46525C;
  --paper: #F4EFE6;
  --paper-dim: rgba(244, 239, 230, 0.7);
  --paper-faint: rgba(244, 239, 230, 0.52);
  --gold: #D9A441;
  --gold-soft: #F2D28C;
  --cyan: #4FC3E8;
  --coral: #E8663D;
  --moss: #7C8F6A;
  --clay: #B5714F;
  --mist: #EAE3D6;
  --line: rgba(217, 164, 65, 0.3);
  --line-soft: rgba(244, 239, 230, 0.13);
  --line-ink: rgba(18, 22, 28, 0.12);
  --max: 1280px;
  --gutter: clamp(20px, 4.5vw, 56px);
  --header-h: 56px;
  --radius-organic: 28px 6px 28px 6px;
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
  --font-sans: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", ui-monospace, Menlo, Consolas, "Courier New", monospace;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 104px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 2px;
}

::selection {
  background: rgba(217, 164, 65, 0.34);
  color: var(--ink);
}

/* ---------- 基础容器 ---------- */
.wrap {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.hairline {
  height: 1px;
  border: 0;
  margin: 0;
  background: var(--line-soft);
}

/* ==========================================================================
   页头
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--ink);
  color: var(--paper);
  border-bottom: 1px solid var(--line-soft);
  transition: box-shadow 0.24s var(--ease);
}

.site-header[data-stuck="true"] {
  box-shadow: 0 20px 34px -26px rgba(0, 0, 0, 0.95);
}

.skip-link {
  position: absolute;
  top: 8px;
  left: var(--gutter);
  z-index: 90;
  padding: 10px 18px;
  background: var(--cyan);
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  border-radius: 2px;
  transform: translateY(-200%);
  transition: transform 0.2s var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline: 2px solid var(--paper);
  outline-offset: 2px;
}

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--cyan));
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 0.12s linear;
  pointer-events: none;
  z-index: 2;
}

/* 上层信息带 */
.utility-bar {
  background: var(--ink);
  border-bottom: 1px solid rgba(244, 239, 230, 0.08);
}

.utility-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 4px 28px;
  min-height: 34px;
  padding-block: 4px;
}

.utility-brand {
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--gold-soft);
}

.utility-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 12px;
  line-height: 1.5;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--moss);
  box-shadow: 0 0 0 3px rgba(124, 143, 106, 0.24);
}

.utility-status {
  color: var(--paper-dim);
  letter-spacing: 0.02em;
}

.utility-hours {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

/* 下层品牌与导航 */
.nav-bar {
  background: linear-gradient(180deg, var(--ink-2), #1A242D);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 28px);
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  padding-block: 8px;
}

.brand-mark {
  position: relative;
  display: block;
  width: 22px;
  height: 22px;
  border: 1px solid var(--gold);
  border-radius: 2px;
  flex: 0 0 auto;
}

.brand-mark::before {
  content: "";
  position: absolute;
  inset: 5px;
  background: var(--gold);
  opacity: 0.92;
}

.brand-mark::after {
  content: "";
  position: absolute;
  right: -5px;
  bottom: -5px;
  width: 9px;
  height: 9px;
  border: 1px solid var(--cyan);
  background: var(--ink-2);
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1.1;
}

.brand-name {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--paper);
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 26px);
  margin-left: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 22px);
  counter-reset: navidx;
}

.nav-item { position: relative; }

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 9px 2px;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.4;
  color: rgba(244, 239, 230, 0.78);
  white-space: nowrap;
  transition: color 0.2s var(--ease);
}

.nav-link::before {
  counter-increment: navidx;
  content: counter(navidx, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0;
  color: var(--gold);
  opacity: 0.72;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 0.24s var(--ease);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--paper);
}

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

.nav-link[aria-current="page"] {
  color: var(--cyan);
  font-weight: 700;
}

.nav-link[aria-current="page"]::before {
  opacity: 1;
  color: var(--gold-soft);
}

.nav-link[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* 移动端开关 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--paper);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.nav-toggle:hover {
  border-color: var(--gold);
  background: rgba(217, 164, 65, 0.08);
}

.nav-toggle-bars {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background: var(--gold-soft);
  transition: background-color 0.2s var(--ease);
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--gold-soft);
  transition: transform 0.24s var(--ease);
}

.nav-toggle-bars::before { top: -6px; }
.nav-toggle-bars::after { top: 6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle-bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after { transform: translateY(-6px) rotate(-45deg); }

/* ==========================================================================
   按钮
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.03em;
  text-align: center;
  cursor: pointer;
  transition: transform 0.2s var(--ease), background-color 0.2s var(--ease),
    color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--coral);
  color: #2A0F06;
  box-shadow: 0 10px 22px -16px rgba(232, 102, 61, 0.95);
}

.btn-primary:hover { background: #F07A52; }

.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--gold-soft);
}

.btn-ghost:hover {
  border-color: var(--gold);
  color: var(--paper);
  background: rgba(217, 164, 65, 0.08);
}

.btn-sm {
  padding: 9px 17px;
  font-size: 13px;
}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 7vw, 96px);
  padding-block: clamp(42px, 6vw, 76px) 24px;
  background: var(--ink);
  color: var(--paper);
  border-top: 1px solid var(--line);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--gold) 0 32%,
    var(--clay) 32% 50%,
    var(--cyan) 50% 66%,
    var(--moss) 66% 84%,
    var(--gold-soft) 84% 100%
  );
  opacity: 0.85;
}

.footer-main {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 2fr) minmax(0, 2fr) minmax(0, 4fr);
  gap: clamp(24px, 3.4vw, 52px);
  align-items: start;
}

.footer-intro { min-width: 0; }

.footer-name {
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 800;
  letter-spacing: 0.03em;
  line-height: 1.2;
}

.footer-summary {
  margin-top: 12px;
  max-width: 34ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper-dim);
}

.footer-meta {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.footer-col { min-width: 0; }

.footer-col-title {
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--gold-soft);
}

.footer-links {
  display: grid;
  gap: 2px;
}

.footer-link {
  display: inline-block;
  padding: 6px 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--paper-dim);
  transition: color 0.2s var(--ease), transform 0.2s var(--ease);
}

.footer-link:hover,
.footer-link:focus-visible {
  color: var(--cyan);
  transform: translateX(3px);
}

.footer-contact { min-width: 0; }

.footer-contact-list {
  display: grid;
  gap: 12px;
}

.footer-contact-item {
  display: grid;
  grid-template-columns: 66px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.footer-contact-label {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--paper-faint);
}

.footer-contact-value {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.footer-note {
  margin-top: 16px;
  max-width: 42ch;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--paper-faint);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 28px;
  margin-top: clamp(30px, 4.4vw, 52px);
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  color: var(--paper-faint);
}

.footer-legal { margin: 0; letter-spacing: 0.02em; }

.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
}

.footer-legal-link {
  padding-bottom: 1px;
  border-bottom: 1px solid transparent;
  color: var(--paper-faint);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.footer-legal-link:hover,
.footer-legal-link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ==========================================================================
   通用版式组件
   ========================================================================== */
.section {
  padding-block: clamp(48px, 7vw, 96px);
}

.section--ink {
  background: var(--ink);
  color: var(--paper);
}

.section--paper {
  background: var(--paper);
  color: var(--ink);
}

.section--mist {
  background: var(--mist);
  color: var(--ink);
}

.prose {
  max-width: 680px;
  font-size: 16px;
  line-height: 1.8;
}

.prose p + p { margin-top: 1em; }
.prose > * + * { margin-top: 1em; }

.lede {
  max-width: 60ch;
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  line-height: 1.75;
  opacity: 0.88;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold);
}

.section--paper .eyebrow,
.section--mist .eyebrow {
  color: var(--clay);
}

.section-title {
  font-size: clamp(1.75rem, 3.4vw, 2.75rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.display-figure {
  font-size: clamp(4rem, 12vw, 10rem);
  font-weight: 200;
  line-height: 0.86;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
}

.link {
  color: inherit;
  border-bottom: 1px solid var(--gold);
  padding-bottom: 1px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.link:hover,
.link:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* 网格 */
.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 32px);
}

.grid-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.split {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(24px, 4vw, 64px);
  align-items: start;
}

/* 面包屑 */
.breadcrumb { margin-bottom: clamp(16px, 2.4vw, 28px); }

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--paper-faint);
}

.section--paper .breadcrumb-list,
.section--mist .breadcrumb-list {
  color: rgba(18, 22, 28, 0.55);
}

.breadcrumb-item { display: inline-flex; align-items: center; }

.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 8px;
  color: var(--gold);
  opacity: 0.8;
}

.breadcrumb-link {
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.breadcrumb-link:hover,
.breadcrumb-link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* 图片容器基础规则（页面阶段放入 <img> 与 alt） */
.media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--ink-2);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-organic);
}

.media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(217, 164, 65, 0.07), transparent 42%),
    repeating-linear-gradient(90deg, rgba(244, 239, 230, 0.055) 0 1px, transparent 1px 48px);
  pointer-events: none;
}

.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 4 / 5; }
.media--square { aspect-ratio: 1 / 1; }

.media-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  opacity: 0.6;
}

/* 标签与数值 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(217, 164, 65, 0.07);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gold-soft);
}

.tag--live {
  border-color: rgba(124, 143, 106, 0.55);
  background: rgba(124, 143, 106, 0.16);
  color: #D5E3C9;
}

.tag--note {
  border-color: rgba(232, 102, 61, 0.5);
  background: rgba(232, 102, 61, 0.14);
  color: #F8C6B4;
}

.section--paper .tag,
.section--mist .tag {
  color: #7A5410;
  border-color: rgba(181, 113, 79, 0.5);
  background: rgba(181, 113, 79, 0.1);
}

.stat {
  display: grid;
  gap: 4px;
}

.stat-value {
  font-size: clamp(2rem, 3.6vw, 3rem);
  font-weight: 200;
  line-height: 1;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  opacity: 0.62;
}

/* ---------- 显现 ---------- */
[data-reveal] {
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

.reveal-ready [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
}

.reveal-ready [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1100px) {
  .footer-main {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    row-gap: clamp(28px, 4vw, 40px);
  }
}

@media (max-width: 960px) {
  html { scroll-padding-top: 84px; }

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

  .nav-inner {
    flex-wrap: wrap;
    row-gap: 8px;
    padding-block: 10px;
    min-height: 0;
  }

  .primary-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-left: 0;
    margin-top: 10px;
    padding-top: 8px;
    border-top: 1px solid var(--line-soft);
  }

  .primary-nav[data-open] { display: flex; }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-item { border-bottom: 1px solid rgba(244, 239, 230, 0.08); }

  .nav-link {
    width: 100%;
    padding: 14px 4px;
    font-size: 15px;
    gap: 10px;
  }

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

  .nav-link[aria-current="page"] {
    background: linear-gradient(90deg, rgba(79, 195, 232, 0.16), transparent 72%);
    padding-inline: 10px;
  }

  .nav-actions { margin-top: 14px; }
  .nav-actions .btn { width: 100%; }

  .utility-inner { min-height: 0; padding-block: 8px; row-gap: 2px; }
  .utility-brand { font-size: 11px; }
  .utility-hours { display: none; }

  .split { grid-template-columns: minmax(0, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
  .grid-2,
  .grid-3 { grid-template-columns: minmax(0, 1fr); }

  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

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

  .utility-meta { gap: 10px; }

  .brand-sub { display: none; }

  .footer-contact-item { grid-template-columns: 60px minmax(0, 1fr); }
}

/* ==========================================================================
   可访问性
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .reveal-ready [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .btn:hover,
  .footer-link:hover,
  .footer-link:focus-visible {
    transform: none;
  }
}

@media print {
  .site-header,
  .site-footer,
  .scroll-progress { display: none; }

  body {
    background: #FFFFFF;
    color: #12161C;
  }
}