/* ============================================================
   皇冠现金官网 · 共享样式 /assets/site.css
   版本档案册体系：墨绿书脊 + 香槟金细线 + 暖纸内页 + 琥珀刻度
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

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

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

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

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

a { color: inherit; }

table { border-collapse: collapse; }

/* ---------- 2. Tokens ---------- */
:root {
  --ink: #0E2A24;
  --ink-deep: #081A16;
  --ink-soft: #123A31;
  --paper: #F5EFE2;
  --paper-2: #FBF6EA;
  --gold: #C7A86B;
  --amber: #E7A62B;
  --slate: #7F9692;
  --silver: #C9D0CD;
  --black: #121A18;
  --paper-gold: #EADFC6;
  --clay: #B4482F;

  --serif: "Noto Serif SC", "Songti SC", "Source Han Serif SC", "SimSun", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --shell-w: 1240px;
  --gutter: clamp(1.1rem, 4vw, 2.5rem);
  --radius: 4px;
  --hair: 1px solid rgba(18, 26, 24, 0.14);
  --hair-soft: 1px solid rgba(18, 26, 24, 0.08);
  --hair-gold: 1px solid rgba(199, 168, 107, 0.42);
  --shadow-card: 0 20px 44px -36px rgba(14, 42, 36, 0.6);
}

/* ---------- 3. Base ---------- */
body {
  min-height: 100vh;
  font-family: var(--sans);
  font-size: clamp(0.95rem, 0.9rem + 0.2vw, 1.03rem);
  font-weight: 400;
  line-height: 1.9;
  color: var(--black);
  background-color: var(--paper);
  background-image:
    radial-gradient(circle at 92% -8%, rgba(199, 168, 107, 0.2), transparent 44%),
    radial-gradient(circle at 2% 9%, rgba(127, 150, 146, 0.16), transparent 40%);
  background-repeat: no-repeat;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink);
  letter-spacing: 0.01em;
}

h1 { font-size: clamp(2rem, 1.4rem + 3vw, 3.3rem); line-height: 1.16; }
h2 { font-size: clamp(1.45rem, 1.1rem + 1.4vw, 2.1rem); }
h3 { font-size: clamp(1.12rem, 1rem + 0.7vw, 1.4rem); }

p + p { margin-top: 0.9em; }

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

:where(a, button, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- 4. Layout ---------- */
.shell {
  width: min(calc(100% - var(--gutter) * 2), var(--shell-w));
  margin-inline: auto;
}

.section {
  padding-block: clamp(2.2rem, 5vw, 4rem);
}

.section-head {
  display: grid;
  gap: 0.55rem;
  padding-bottom: 1.1rem;
  margin-bottom: clamp(1.2rem, 3vw, 2rem);
  border-bottom: var(--hair-gold);
}

.section-index {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--gold);
}

.section-title {
  font-family: var(--serif);
  font-size: clamp(1.4rem, 1.1rem + 1.2vw, 2rem);
  color: var(--ink);
}

.section-kicker {
  font-size: 0.84rem;
  letter-spacing: 0.04em;
  color: rgba(18, 26, 24, 0.62);
}

.grid {
  display: grid;
  gap: clamp(1rem, 2.4vw, 1.8rem);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* ---------- 5. Text utilities ---------- */
.lede {
  font-size: clamp(1rem, 0.96rem + 0.3vw, 1.14rem);
  line-height: 1.85;
  color: rgba(18, 26, 24, 0.78);
}

.muted { color: rgba(18, 26, 24, 0.58); }

.mono {
  font-family: var(--mono);
  font-size: 0.92em;
  letter-spacing: 0.02em;
}

.prose {
  max-width: 70ch;
  line-height: 1.95;
}

.prose h2,
.prose h3 { margin-top: 1.9em; margin-bottom: 0.6em; }

.prose p { margin-bottom: 1em; }

.prose ul,
.prose ol {
  margin: 0 0 1.1em;
  padding-left: 1.35rem;
  list-style: disc;
}

.prose ol { list-style: decimal; }

.prose li + li { margin-top: 0.35em; }

.prose a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--gold);
  text-underline-offset: 3px;
}

/* ---------- 6. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.72rem 1.32rem;
  border: 1px solid transparent;
  border-radius: 3px;
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.22s ease, color 0.22s ease, border-color 0.22s ease, transform 0.22s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn--gold { background: var(--gold); color: var(--ink); }
.btn--gold:hover { background: var(--amber); }

.btn--ink { background: var(--ink); color: var(--paper); }
.btn--ink:hover { background: var(--ink-soft); }

.btn--ghost {
  background: transparent;
  border-color: var(--silver);
  color: var(--ink);
}

.btn--ghost:hover { border-color: var(--gold); background: rgba(199, 168, 107, 0.14); }

.btn--ghost-light {
  background: transparent;
  border-color: rgba(199, 168, 107, 0.55);
  color: var(--paper);
}

.btn--ghost-light:hover { background: rgba(199, 168, 107, 0.16); color: #fff; }

/* ---------- 7. Breadcrumbs ---------- */
.crumbs {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: rgba(18, 26, 24, 0.55);
}

.crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
}

.crumbs a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.crumbs a:hover { color: var(--ink); border-bottom-color: var(--gold); }

.crumbs li + li::before {
  content: "/";
  margin-right: 0.45rem;
  color: var(--gold);
}

/* ---------- 8. Cards / panels ---------- */
.card {
  position: relative;
  padding: clamp(1.05rem, 2.2vw, 1.6rem);
  background: var(--paper-2);
  border: var(--hair);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.glass-panel {
  background: rgba(245, 239, 226, 0.07);
  border: var(--hair-gold);
  border-radius: var(--radius);
  -webkit-backdrop-filter: blur(9px);
  backdrop-filter: blur(9px);
}

.panel {
  padding: clamp(1rem, 2vw, 1.35rem);
  background: rgba(127, 150, 146, 0.14);
  border: 1px solid rgba(127, 150, 146, 0.4);
  border-radius: var(--radius);
}

/* ---------- 9. Status tags ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.16rem 0.55rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  line-height: 1.7;
  white-space: nowrap;
}

.tag--amber {
  color: #7F5708;
  background: rgba(231, 166, 43, 0.2);
  border-color: rgba(231, 166, 43, 0.55);
}

.tag--silver {
  color: #465B57;
  background: rgba(201, 208, 205, 0.5);
  border-color: rgba(127, 150, 146, 0.5);
}

.tag--gold {
  color: #6F5726;
  background: rgba(199, 168, 107, 0.2);
  border-color: rgba(199, 168, 107, 0.6);
}

.tag--clay {
  color: #8B3119;
  background: rgba(180, 72, 47, 0.14);
  border-color: rgba(180, 72, 47, 0.5);
}

/* ---------- 10. Data table ---------- */
.data-table {
  width: 100%;
  font-size: 0.9rem;
  line-height: 1.75;
}

.data-table th,
.data-table td {
  padding: 0.68rem 0.8rem;
  border-bottom: var(--hair-soft);
  text-align: left;
  vertical-align: top;
}

.data-table thead th {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(18, 26, 24, 0.55);
  border-bottom: 1px solid var(--gold);
}

.data-table .num {
  font-family: var(--mono);
  letter-spacing: 0.02em;
}

.data-table tbody tr:hover { background: rgba(199, 168, 107, 0.1); }

/* ---------- 11. Figure / 图片容器 ---------- */
.figure {
  position: relative;
  display: block;
  margin: 0;
  overflow: hidden;
  border: var(--hair);
  border-radius: var(--radius);
  background-color: var(--paper-gold);
  background-image:
    repeating-linear-gradient(45deg, rgba(199, 168, 107, 0.18) 0 10px, rgba(199, 168, 107, 0.07) 10px 20px);
}

.figure__media {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.figure img {
  display: block;
  width: 100%;
  height: auto;
}

.figure__caption {
  padding: 0.6rem 0.85rem;
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: rgba(18, 26, 24, 0.62);
  background: rgba(245, 239, 226, 0.92);
  border-top: var(--hair-soft);
}

.figure--wide .figure__media { aspect-ratio: 21 / 9; }
.figure--portrait .figure__media { aspect-ratio: 4 / 5; }

.figure--bg-ink {
  background-color: var(--ink);
  background-image:
    repeating-linear-gradient(45deg, rgba(199, 168, 107, 0.16) 0 12px, rgba(199, 168, 107, 0.04) 12px 24px);
  border-color: rgba(199, 168, 107, 0.35);
}

/* ---------- 12. Skip link ---------- */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -120px;
  z-index: 200;
  padding: 0.7rem 1.15rem;
  background: var(--amber);
  color: var(--ink);
  font-weight: 800;
  letter-spacing: 0.04em;
  text-decoration: none;
  border-radius: 3px;
  transition: top 0.22s ease;
}

.skip-link:focus { top: 0.7rem; }

/* ---------- 13. Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  color: var(--paper);
  background: var(--ink);
  border-bottom: 1px solid rgba(199, 168, 107, 0.32);
  box-shadow: 0 24px 46px -38px rgba(0, 0, 0, 0.9);
}

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: rgba(199, 168, 107, 0.16);
  pointer-events: none;
}

.scroll-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--gold), var(--amber));
}

.header-band {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0));
  border-bottom: 1px solid rgba(199, 168, 107, 0.2);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.header-band__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem 1.6rem;
  padding-block: 0.78rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.72rem;
  margin-right: auto;
  text-decoration: none;
  color: var(--paper);
}

.brand__dial {
  position: relative;
  display: inline-block;
  flex: none;
  width: 28px;
  height: 28px;
  border: 1px solid var(--gold);
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 50%, rgba(199, 168, 107, 0.28), rgba(199, 168, 107, 0) 68%);
}

.brand__dial::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 4px;
  height: 4px;
  margin: -2px 0 0 -2px;
  border-radius: 50%;
  background: var(--gold);
}

.brand__needle {
  position: absolute;
  left: 50%;
  bottom: 50%;
  width: 1.5px;
  height: 9px;
  background: var(--amber);
  transform-origin: 50% 100%;
  transform: translateX(-50%) rotate(38deg);
  transition: transform 0.5s cubic-bezier(0.22, 0.8, 0.3, 1);
}

.brand:hover .brand__needle,
.brand:focus-visible .brand__needle { transform: translateX(-50%) rotate(-24deg); }

.brand__text {
  display: grid;
  gap: 0.1rem;
}

.brand__name {
  font-size: 1.04rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  line-height: 1.2;
  color: #fff;
}

.brand__line {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  line-height: 1.5;
  color: rgba(199, 168, 107, 0.88);
}

.header-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.2rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: rgba(245, 239, 226, 0.62);
}

.header-meta__item { white-space: nowrap; }

.header-meta__key {
  margin-right: 0.35rem;
  color: var(--gold);
}

.header-meta__value { color: rgba(245, 239, 226, 0.82); }

.quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.quick-link {
  display: inline-flex;
  align-items: center;
  padding: 0.32rem 0.72rem;
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--paper);
  text-decoration: none;
  border: 1px solid rgba(199, 168, 107, 0.42);
  border-radius: 999px;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.quick-link:hover,
.quick-link:focus-visible {
  background: rgba(199, 168, 107, 0.18);
  border-color: var(--amber);
  color: #fff;
}

.header-index {
  position: relative;
  background: linear-gradient(180deg, rgba(245, 239, 226, 0.07), rgba(245, 239, 226, 0.02));
}

.header-index__inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-block: 0.35rem;
}

.header-index__label {
  flex: none;
  padding-right: 0.95rem;
  border-right: 1px solid rgba(199, 168, 107, 0.38);
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.24em;
  color: var(--gold);
  white-space: nowrap;
}

.site-nav { position: relative; }

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.1rem 1.55rem;
}

.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 0.42rem;
  padding: 0.55rem 0.05rem;
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  color: rgba(245, 239, 226, 0.8);
  text-decoration: none;
  transition: color 0.2s ease;
}

.site-nav__num {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  color: rgba(199, 168, 107, 0.72);
  transition: color 0.2s ease;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.22rem;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.26s ease, background-color 0.26s ease;
}

.site-nav__link:hover { color: #fff; }
.site-nav__link:hover::after { transform: scaleX(1); }

.site-nav__link[aria-current="page"],
.site-nav__link.is-current { color: #fff; }

.site-nav__link[aria-current="page"]::after,
.site-nav__link.is-current::after {
  transform: scaleX(1);
  background: var(--amber);
}

.site-nav__link[aria-current="page"] .site-nav__num,
.site-nav__link.is-current .site-nav__num { color: var(--amber); }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.55rem;
  margin-left: auto;
  padding: 0.45rem 0.85rem;
  color: var(--paper);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  background: rgba(199, 168, 107, 0.14);
  border: 1px solid rgba(199, 168, 107, 0.46);
  border-radius: 3px;
  cursor: pointer;
}

.nav-toggle__bars {
  position: relative;
  display: inline-block;
  width: 16px;
  height: 10px;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.22s ease;
}

.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { bottom: 0; }

.site-header[data-open] .nav-toggle__bars::before { transform: translateY(4.25px) rotate(45deg); }
.site-header[data-open] .nav-toggle__bars::after { transform: translateY(-4.25px) rotate(-45deg); }

/* ---------- 14. Footer ---------- */
.site-footer {
  margin-top: clamp(2.6rem, 7vw, 5.5rem);
  color: rgba(245, 239, 226, 0.78);
  background: linear-gradient(180deg, #0E2A24 0%, #0A211C 58%, #081A16 100%);
  border-top: 1px solid rgba(199, 168, 107, 0.34);
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.8fr) minmax(0, 0.8fr) minmax(0, 1fr);
  gap: clamp(1.4rem, 3.4vw, 2.6rem);
  padding-block: clamp(2.1rem, 5vw, 3.4rem) clamp(1.6rem, 3.6vw, 2.4rem);
}

.footer-brand {
  display: grid;
  gap: 0.5rem;
  align-content: start;
}

.footer-brand__name {
  font-family: var(--serif);
  font-size: clamp(1.25rem, 1.05rem + 0.8vw, 1.6rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.footer-brand__line {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.footer-brand__note {
  max-width: 34ch;
  margin-top: 0.35rem;
  font-size: 0.84rem;
  line-height: 1.85;
  color: rgba(245, 239, 226, 0.6);
}

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

.footer-col__title {
  padding-bottom: 0.55rem;
  margin-bottom: 0.8rem;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.22em;
  color: var(--gold);
  border-bottom: 1px solid rgba(199, 168, 107, 0.28);
}

.footer-col__list {
  display: grid;
  gap: 0.42rem;
}

.footer-link {
  position: relative;
  display: inline-block;
  padding-left: 0.85rem;
  font-size: 0.86rem;
  letter-spacing: 0.03em;
  color: rgba(245, 239, 226, 0.74);
  text-decoration: none;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.footer-link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.82em;
  width: 0.42rem;
  height: 1px;
  background: rgba(199, 168, 107, 0.7);
  transition: width 0.2s ease, background-color 0.2s ease;
}

.footer-link:hover,
.footer-link:focus-visible { color: #fff; }

.footer-link:hover::before,
.footer-link:focus-visible::before { width: 0.62rem; background: var(--amber); }

.footer-contact {
  padding: clamp(0.9rem, 2vw, 1.15rem);
  background: rgba(245, 239, 226, 0.07);
  border: var(--hair-gold);
  border-radius: var(--radius);
  -webkit-backdrop-filter: blur(9px);
  backdrop-filter: blur(9px);
}

.footer-contact__title {
  padding-bottom: 0.55rem;
  margin-bottom: 0.7rem;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  color: var(--gold);
  border-bottom: 1px solid rgba(199, 168, 107, 0.28);
}

.footer-contact__list { display: grid; gap: 0.5rem; }

.footer-contact__row {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  gap: 0.6rem;
  align-items: start;
  font-size: 0.82rem;
  line-height: 1.7;
}

.footer-contact__row dt {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  color: rgba(199, 168, 107, 0.9);
  padding-top: 0.12rem;
}

.footer-contact__row dd {
  color: rgba(245, 239, 226, 0.84);
  word-break: break-word;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem 1.5rem;
  padding-block: 1rem 1.4rem;
  border-top: 1px solid rgba(199, 168, 107, 0.24);
}

.footer-legal__copy {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: rgba(245, 239, 226, 0.55);
}

.footer-legal__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.2rem;
}

.footer-legal__links .footer-link { font-size: 0.76rem; }

/* ---------- 15. JS 创建组件 ---------- */
.to-top {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: 95;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.6rem 0.95rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--paper);
  background: var(--ink);
  border: 1px solid rgba(199, 168, 107, 0.55);
  border-radius: 999px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.26s ease, transform 0.26s ease, visibility 0.26s ease, background-color 0.2s ease;
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.to-top:hover { background: var(--ink-soft); border-color: var(--amber); }

.to-top__glyph { font-size: 0.85rem; color: var(--amber); }

/* ---------- 16. Reveal ---------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

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

/* ---------- 17. Responsive ---------- */
@media (max-width: 1160px) {
  .header-meta { display: none; }
}

@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-top { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .header-index__inner { position: relative; }

  .header-index__label { display: none; }

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

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    max-height: calc(100vh - 7rem);
    overflow-y: auto;
    padding: 0.35rem var(--gutter) 1.1rem;
    background: var(--ink);
    border-top: 1px solid rgba(199, 168, 107, 0.28);
    border-bottom: 1px solid rgba(199, 168, 107, 0.4);
    box-shadow: 0 26px 40px -30px rgba(0, 0, 0, 0.9);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s ease;
  }

  .site-nav__list { flex-direction: column; gap: 0; }

  .site-nav__item + .site-nav__item { border-top: 1px solid rgba(245, 239, 226, 0.1); }

  .site-nav__link {
    display: flex;
    justify-content: flex-start;
    width: 100%;
    padding-block: 0.82rem;
    font-size: 1rem;
  }

  .site-nav__link::after { bottom: 0.5rem; right: auto; width: 100%; }

  .site-header[data-open] .site-nav {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}

@media (max-width: 860px) {
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--2 { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 760px) {
  .grid--3 { grid-template-columns: minmax(0, 1fr); }
  .data-table { font-size: 0.84rem; }
  .data-table th,
  .data-table td { padding: 0.55rem 0.5rem; }
}

@media (max-width: 680px) {
  .footer-top { grid-template-columns: minmax(0, 1fr); }
  .footer-legal { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 600px) {
  .brand__line { display: none; }
  .brand__dial { width: 24px; height: 24px; }
  .brand__name { font-size: 0.96rem; letter-spacing: 0.06em; }
  .quick-link { padding: 0.28rem 0.6rem; font-size: 0.7rem; }
  .header-band__inner { gap: 0.55rem 1rem; padding-block: 0.65rem; }
  .footer-contact__row { grid-template-columns: 2.6rem minmax(0, 1fr); }
}

@media (max-width: 420px) {
  .quick-actions { gap: 0.35rem; }
  .to-top { padding: 0.52rem 0.8rem; letter-spacing: 0.1em; }
}

/* ---------- 18. Reduced motion ---------- */
@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;
  }

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

  .btn:hover { transform: none; }
}