/* ==========================================================================
   /assets/site.css — 澳门十大娱乐会馆 共享样式
   墨绿门楣 · 铜金细线 · 暖砂纸面 · 暗红印记
   ========================================================================== */

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

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

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

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

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

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

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

table { border-collapse: collapse; width: 100%; }

/* ---------- tokens ---------- */
:root {
  --ink: #0f241d;
  --ink-2: #16332a;
  --ink-3: #1f4237;
  --copper: #b6813f;
  --copper-soft: #d9ab6d;
  --sand: #efe6d6;
  --sand-2: #e3d6bf;
  --paper: #f7f2e7;
  --paper-2: #eee5d3;
  --crimson: #7c2f2c;
  --text: #1b2a23;
  --muted: #5f6d63;
  --rule: rgba(27, 42, 35, 0.16);
  --rule-soft: rgba(27, 42, 35, 0.09);
  --radius: 4px;
  --font-serif: "Songti SC", "Source Han Serif SC", "Noto Serif SC", "STSong", "SimSun", serif;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, monospace;
  --maxw: 1180px;
  --maxw-wide: 1420px;
  --gutter: clamp(1rem, 4vw, 2.5rem);
}

/* ---------- base ---------- */
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.85;
  letter-spacing: 0.01em;
  color: var(--text);
  background-color: var(--paper);
  background-image:
    radial-gradient(circle at 8% -8%, rgba(182, 129, 63, 0.16), transparent 52%),
    radial-gradient(circle at 98% 2%, rgba(31, 66, 55, 0.12), transparent 46%);
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0.02em;
}

p { text-wrap: pretty; }

strong { font-weight: 600; }

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

/* ---------- skip link ---------- */
.skip-link {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 300;
  display: inline-block;
  padding: 0.7rem 1.2rem;
  background: var(--copper);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  transform: translateY(-120%);
  transition: transform 0.2s ease;
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline-offset: -3px;
}

/* ==========================================================================
   HEADER — 门楣式双层：铜金注记带 + 深墨品牌/栏目横条
   ========================================================================== */
.site-header {
  position: relative;
  z-index: 90;
  background: var(--ink);
  color: var(--sand);
  border-bottom: 1px solid rgba(182, 129, 63, 0.45);
}

.header-rail {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.4rem var(--gutter);
  background: var(--copper);
  color: #20180d;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.rail-text { white-space: nowrap; }

.rail-dots {
  flex: 1 1 auto;
  height: 1px;
  min-width: 1.5rem;
  background: linear-gradient(to right, rgba(32, 24, 13, 0.55), rgba(32, 24, 13, 0.12));
}

.rail-link {
  position: relative;
  white-space: nowrap;
  padding-bottom: 1px;
  border-bottom: 1px solid rgba(32, 24, 13, 0.6);
  transition: opacity 0.25s ease, border-color 0.25s ease;
}

.rail-link:hover,
.rail-link:focus-visible { border-color: #20180d; opacity: 0.82; }

.header-bar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  width: 100%;
  max-width: var(--maxw-wide);
  margin-inline: auto;
  padding: 0.95rem var(--gutter);
}

/* brand --------------------------------------------------------------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  color: var(--sand);
  flex: none;
}

.brand-seal {
  display: grid;
  place-items: center;
  width: 2.6rem;
  height: 2.6rem;
  flex: none;
  border: 1px solid var(--copper);
  border-radius: 2px;
  background: rgba(182, 129, 63, 0.1);
  color: var(--copper-soft);
  font-family: var(--font-serif);
  font-size: 1.3rem;
  line-height: 1;
  transition: background 0.3s ease, color 0.3s ease;
}

.brand-seal--lg {
  width: 3.4rem;
  height: 3.4rem;
  font-size: 1.7rem;
  margin-bottom: 1.1rem;
}

.brand:hover .brand-seal,
.brand:focus-visible .brand-seal {
  background: var(--copper);
  color: var(--ink);
}

.brand-text {
  display: grid;
  gap: 0.1rem;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: clamp(1.02rem, 1.9vw, 1.3rem);
  letter-spacing: 0.1em;
  color: var(--sand);
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(217, 171, 109, 0.85);
}

/* nav ----------------------------------------------------------------- */
.site-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  margin-left: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 1.35rem;
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 0.35rem 0;
  font-size: 0.94rem;
  letter-spacing: 0.08em;
  color: rgba(239, 230, 214, 0.88);
  transition: color 0.25s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--copper);
  transition: right 0.35s ease;
}

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

.nav-link:hover::after,
.nav-link:focus-visible::after { right: 0; }

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

.nav-link[aria-current="page"]::after {
  right: 0;
  background: var(--copper-soft);
}

.nav-foot {
  display: none;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: rgba(217, 171, 109, 0.72);
}

/* toggle -------------------------------------------------------------- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.85rem;
  border: 1px solid rgba(182, 129, 63, 0.6);
  border-radius: 2px;
  color: var(--sand);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  cursor: pointer;
  transition: border-color 0.25s ease, background 0.25s ease;
}

.nav-toggle:hover { background: rgba(182, 129, 63, 0.12); }

.nav-toggle-bars {
  display: grid;
  gap: 4px;
  width: 15px;
}

.nav-toggle-bars span {
  display: block;
  height: 1px;
  background: var(--copper-soft);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:first-child {
  transform: translateY(2.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:last-child {
  transform: translateY(-2.5px) rotate(-45deg);
}

.nav-toggle-label { line-height: 1; }

/* scroll progress ------------------------------------------------------ */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 130;
  width: 100%;
  height: 3px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--copper), var(--crimson));
  pointer-events: none;
}

/* ==========================================================================
   FOOTER — 台账四栏 + 备案底栏
   ========================================================================== */
.site-footer {
  margin-top: clamp(3rem, 7vw, 6rem);
  background: var(--ink);
  color: var(--sand);
  border-top: 2px solid var(--copper);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.35fr;
  gap: clamp(1.5rem, 3vw, 2.8rem);
  width: min(1220px, calc(100% - var(--gutter) * 2));
  margin-inline: auto;
  padding: clamp(2.4rem, 5vw, 3.8rem) 0 clamp(1.8rem, 4vw, 2.8rem);
}

.footer-brand { max-width: 34ch; }

.footer-title {
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 2.2vw, 1.55rem);
  letter-spacing: 0.1em;
  color: var(--sand);
}

.footer-note {
  margin-top: 0.75rem;
  font-size: 0.9rem;
  line-height: 1.8;
  color: rgba(239, 230, 214, 0.68);
}

.footer-mark {
  margin-top: 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(217, 171, 109, 0.6);
}

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

.footer-col-title {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--copper-soft);
}

.footer-col-title::after {
  content: "";
  flex: 1 1 auto;
  height: 1px;
  background: rgba(217, 171, 109, 0.28);
}

.footer-links {
  display: grid;
  gap: 0.45rem;
}

.footer-link {
  position: relative;
  display: inline-block;
  padding-left: 0.95rem;
  font-size: 0.94rem;
  color: rgba(239, 230, 214, 0.85);
  transition: color 0.25s ease, transform 0.25s ease;
}

.footer-link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 0.36rem;
  height: 1px;
  background: var(--copper);
  transition: width 0.25s ease;
}

.footer-link:hover,
.footer-link:focus-visible {
  color: var(--copper-soft);
  transform: translateX(2px);
}

.footer-link:hover::before,
.footer-link:focus-visible::before { width: 0.6rem; }

.contact-list {
  display: grid;
  gap: 0.7rem;
}

.contact-row {
  display: grid;
  gap: 0.1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid rgba(239, 230, 214, 0.1);
}

.contact-row dt {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(217, 171, 109, 0.75);
}

.contact-row dd {
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(239, 230, 214, 0.88);
  word-break: break-word;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem 1.6rem;
  width: min(1220px, calc(100% - var(--gutter) * 2));
  margin-inline: auto;
  padding: 1.1rem 0 1.5rem;
  border-top: 1px solid rgba(239, 230, 214, 0.14);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: rgba(239, 230, 214, 0.6);
}

.footer-copy,
.footer-icp,
.footer-addr { line-height: 1.6; }

/* ==========================================================================
   LAYOUT / SECTION
   ========================================================================== */
.container {
  width: min(var(--maxw), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
}

.container--wide {
  width: min(var(--maxw-wide), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
}

.section { padding: clamp(2.6rem, 6vw, 5rem) 0; }

.section--tight { padding: clamp(1.8rem, 4vw, 3rem) 0; }

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

.section--sand { background: var(--sand); }

.section-head {
  display: grid;
  gap: 0.85rem;
  max-width: 62ch;
  margin-bottom: clamp(1.6rem, 3vw, 2.6rem);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--copper);
}

.eyebrow::before {
  content: "";
  width: 1.6rem;
  height: 1px;
  background: currentColor;
  flex: none;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.7rem, 4vw, 2.85rem);
  line-height: 1.24;
  letter-spacing: 0.02em;
}

.section-note {
  max-width: 58ch;
  font-size: 1rem;
  color: var(--muted);
}

.section--ink .section-note { color: rgba(239, 230, 214, 0.72); }

.section--ink .eyebrow { color: var(--copper-soft); }

/* prose --------------------------------------------------------------- */
.prose {
  display: grid;
  gap: 1.05rem;
  max-width: 68ch;
  font-size: 1rem;
}

.prose h2,
.prose h3 {
  margin-top: 0.8rem;
  font-size: clamp(1.2rem, 2.4vw, 1.55rem);
}

.prose ul {
  display: grid;
  gap: 0.5rem;
}

.prose li {
  position: relative;
  padding-left: 1.1rem;
}

.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 0.4rem;
  height: 1px;
  background: var(--copper);
}

.section--ink .prose { color: rgba(239, 230, 214, 0.86); }

/* grids --------------------------------------------------------------- */
.grid {
  display: grid;
  gap: clamp(1rem, 2.2vw, 1.8rem);
}

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

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

.grid--split { grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); }

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.78rem 1.5rem;
  border: 1px solid transparent;
  border-radius: 2px;
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  line-height: 1.3;
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.btn--primary {
  background: var(--copper);
  border-color: var(--copper);
  color: #20180d;
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--copper-soft);
  border-color: var(--copper-soft);
}

.btn--ghost {
  border-color: rgba(182, 129, 63, 0.7);
  color: var(--ink);
}

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

.btn--ink {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--sand);
}

.btn--ink:hover,
.btn--ink:focus-visible {
  background: var(--ink-3);
  border-color: var(--ink-3);
}

.section--ink .btn--ghost {
  border-color: rgba(217, 171, 109, 0.65);
  color: var(--sand);
}

.section--ink .btn--ghost:hover,
.section--ink .btn--ghost:focus-visible {
  background: var(--copper);
  border-color: var(--copper);
  color: var(--ink);
}

/* ==========================================================================
   BREADCRUMB
   ========================================================================== */
.breadcrumb {
  padding: 1.05rem 0;
  border-bottom: 1px solid var(--rule-soft);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.breadcrumb li + li::before {
  content: "／";
  color: var(--copper);
  font-size: 0.8em;
}

.breadcrumb a { transition: color 0.2s ease; }

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

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

/* ==========================================================================
   BENTO
   ========================================================================== */
.bento {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(0.9rem, 1.6vw, 1.3rem);
}

.bento-cell {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  position: relative;
  padding: clamp(1.2rem, 2.4vw, 2rem);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  overflow: hidden;
  min-width: 0;
}

.bento-cell--ink {
  background: var(--ink);
  border-color: transparent;
  color: var(--sand);
}

.bento-cell--copper {
  background: var(--copper);
  border-color: transparent;
  color: #20180d;
}

.bento-cell--sand {
  background: var(--sand);
  border-color: rgba(27, 42, 35, 0.08);
}

.bento-cell--crimson {
  background: var(--crimson);
  border-color: transparent;
  color: var(--sand);
}

.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; }
.span-12 { grid-column: span 12; }

/* ==========================================================================
   FIGURE — 暗调图片容器基础规则
   ========================================================================== */
.figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(182, 129, 63, 0.35);
  border-radius: var(--radius);
  background: var(--ink-2);
}

.figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.04);
}

.figure--wide { aspect-ratio: 16 / 9; }
.figure--tall { aspect-ratio: 3 / 4; }
.figure--square { aspect-ratio: 1 / 1; }
.figure--band { aspect-ratio: 21 / 9; }

.figure--plain {
  border: 0;
  border-radius: 0;
  background: transparent;
}

.figure figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 1.6rem 1rem 0.75rem;
  background: linear-gradient(to top, rgba(9, 22, 18, 0.88), rgba(9, 22, 18, 0));
  color: rgba(239, 230, 214, 0.9);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  line-height: 1.6;
}

.figure-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: clamp(0.8rem, 1.8vw, 1.3rem);
}

/* ==========================================================================
   LEDGER — 台账式数据行
   ========================================================================== */
.ledger {
  display: grid;
  border-top: 1px solid var(--rule);
}

.ledger-row {
  display: grid;
  grid-template-columns: minmax(8rem, 0.55fr) minmax(0, 1fr);
  gap: 0.5rem 1.2rem;
  align-items: baseline;
  padding: 0.95rem 0;
  border-bottom: 1px solid var(--rule);
}

.ledger-key {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.ledger-val {
  font-size: 0.98rem;
  color: var(--text);
}

.ledger-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: clamp(1.15rem, 2.6vw, 1.85rem);
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.section--ink .ledger { border-top-color: rgba(239, 230, 214, 0.2); }
.section--ink .ledger-row { border-bottom-color: rgba(239, 230, 214, 0.16); }
.section--ink .ledger-key { color: rgba(217, 171, 109, 0.8); }
.section--ink .ledger-val { color: rgba(239, 230, 214, 0.9); }
.section--ink .ledger-num { color: var(--copper-soft); }

/* ==========================================================================
   TABS
   ========================================================================== */
.tabs { display: grid; }

.tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--rule);
}

.tab {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1rem;
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-size: 0.88rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.tab:hover {
  border-color: var(--copper);
  color: var(--ink);
}

.tab[aria-selected="true"] {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--sand);
}

.tabpanel { padding-top: 1.4rem; }

.tabpanel[hidden] { display: none; }

/* ==========================================================================
   STEP PATH — 技能树式服务路径
   ========================================================================== */
.step-path {
  display: grid;
  position: relative;
}

.step {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1.1rem;
  padding-bottom: 1.9rem;
}

.step:last-child { padding-bottom: 0; }

.step::before {
  content: "";
  position: absolute;
  left: 1.19rem;
  top: 2.4rem;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, rgba(182, 129, 63, 0.75), rgba(182, 129, 63, 0.12));
}

.step:last-child::before { display: none; }

.step-index {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 2.4rem;
  height: 2.4rem;
  flex: none;
  border: 1px solid var(--copper);
  border-radius: 50%;
  background: var(--paper);
  color: var(--copper);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.section--ink .step-index {
  background: var(--ink);
  color: var(--copper-soft);
  border-color: rgba(217, 171, 109, 0.7);
}

.step-body {
  display: grid;
  gap: 0.3rem;
  padding-top: 0.35rem;
}

.step-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  letter-spacing: 0.03em;
}

.step-text {
  font-size: 0.94rem;
  color: var(--muted);
}

.section--ink .step-text { color: rgba(239, 230, 214, 0.72); }

/* ==========================================================================
   CALLOUT / TAG / ANNOTATION
   ========================================================================== */
.callout {
  padding: 1.1rem 1.35rem;
  border-left: 3px solid var(--copper);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--sand);
  font-size: 0.94rem;
  color: var(--text);
}

.callout--ink {
  background: var(--ink-2);
  border-left-color: var(--copper-soft);
  color: rgba(239, 230, 214, 0.88);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.6rem;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  line-height: 1.6;
}

.tag--copper { color: var(--copper); }

.note-vertical {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.42em;
  color: var(--copper);
  align-self: start;
}

.note-tag {
  display: inline-block;
  transform: rotate(-90deg);
  transform-origin: left center;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--copper);
  white-space: nowrap;
}

/* ==========================================================================
   REVEAL / TO TOP
   ========================================================================== */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-reveal][data-revealed="true"] {
  opacity: 1;
  transform: none;
}

.to-top {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: 120;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  border: 1px solid rgba(182, 129, 63, 0.55);
  border-radius: 999px;
  background: var(--ink);
  color: var(--sand);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease, background 0.25s ease;
}

.to-top[data-visible="true"] {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.to-top:hover,
.to-top:focus-visible {
  background: var(--copper);
  color: #20180d;
}

/* ==========================================================================
   RESPONSIVE — 平板 / 手机
   ========================================================================== */
@media (max-width: 1080px) {
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-top { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-contact { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 100;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 0.5rem var(--gutter) 1.6rem;
    background: var(--ink-2);
    border-bottom: 1px solid rgba(182, 129, 63, 0.42);
    box-shadow: 0 26px 50px rgba(8, 20, 16, 0.4);
  }

  .site-nav[data-open],
  .site-nav[data-open="true"] { display: flex; }

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

  .nav-list li + li { border-top: 1px solid rgba(239, 230, 214, 0.12); }

  .nav-link {
    display: block;
    padding: 0.95rem 0;
    font-size: 1.03rem;
  }

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

  .nav-link[aria-current="page"] {
    padding-left: 1.1rem;
    color: var(--copper-soft);
  }

  .nav-link[aria-current="page"]::before {
    content: "◆";
    position: absolute;
    left: 0;
    top: 50%;
    margin-top: -0.55em;
    font-size: 0.62em;
    color: var(--copper);
  }

  .nav-foot {
    display: block;
    margin-top: 1.2rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(217, 171, 109, 0.24);
  }

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

  .bento > * { grid-column: span 6; }

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

@media (max-width: 620px) {
  body { line-height: 1.8; }

  .header-rail { font-size: 0.62rem; letter-spacing: 0.16em; }

  .rail-text { overflow: hidden; text-overflow: ellipsis; }

  .brand-name { letter-spacing: 0.06em; }

  .brand-sub { display: none; }

  .bento > * { grid-column: span 12; }

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

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

  .ledger-row { grid-template-columns: minmax(0, 1fr); }

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

  .note-vertical { display: none; }
}

/* ==========================================================================
   MOTION PREFERENCES
   ========================================================================== */
@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;
  }

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

  .to-top { transition: none; }
}