/* ============================================================
   /assets/site.css — 财神8中心 共享外壳与通用组件
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 7rem;
}

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

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

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

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

a { color: inherit; }

/* ---------- 2. Tokens ---------- */
:root {
  --cinnabar: #A3312A;
  --cinnabar-deep: #6F1D1A;
  --gold: #C99A3D;
  --gold-warm: #E7C97E;
  --ink-green: #183A32;
  --paper: #F6F0E4;
  --paper-2: #EDE3CF;
  --card: #FBF6EC;
  --ink: #211C18;
  --brick: #B5544A;
  --sage: #7B8F86;

  --line: rgba(33, 28, 24, .14);
  --line-soft: rgba(33, 28, 24, .08);
  --line-gold: rgba(201, 154, 61, .45);
  --line-paper: rgba(246, 240, 228, .18);

  --font-display: 'FZSongKeBenXiuKai', 'STFangsong', 'Songti SC', 'Noto Serif SC', serif;
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;

  --page-max: 1220px;
  --gutter: clamp(1.1rem, 4vw, 3rem);
  --radius: 2px;
  --dur: 220ms;
  --shadow-soft: 0 1px 0 rgba(33, 28, 24, .04), 0 22px 44px -36px rgba(33, 28, 24, .6);
}

/* ---------- 3. Base typography ---------- */
body {
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.22;
  letter-spacing: .01em;
  color: var(--ink);
}

h1 { font-size: clamp(2rem, 4.4vw, 3.2rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.4rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.45rem); }

p + p { margin-top: .85em; }

a {
  color: var(--cinnabar-deep);
  text-underline-offset: .22em;
  text-decoration-thickness: 1px;
}

a:hover { color: var(--cinnabar); }

strong { font-weight: 600; }

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

:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: 1px;
}

/* ---------- 4. Layout primitives ---------- */
.container {
  width: 100%;
  max-width: var(--page-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  position: relative;
  padding-block: clamp(2.4rem, 6vw, 4.6rem);
  transition: background-color var(--dur) ease;
}

.section--paper {
  background-color: var(--paper-2);
}

.section.is-active {
  background-color: rgba(231, 201, 126, .12);
}

.section__head {
  display: grid;
  gap: .35rem;
  margin-bottom: clamp(1.4rem, 3vw, 2.4rem);
  max-width: 46rem;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .22em;
  color: var(--sage);
  text-transform: uppercase;
}

.index-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2.4rem, 6vw, 4.4rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -.02em;
  color: rgba(163, 49, 42, .26);
}

.h-display {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 7vw, 5.6rem);
  font-weight: 400;
  line-height: 1.03;
  letter-spacing: -.012em;
}

.h-section {
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3vw, 2.5rem);
  font-weight: 500;
  line-height: 1.2;
}

.prose {
  max-width: 38em;
  font-size: 1.02rem;
  line-height: 1.8;
  color: rgba(33, 28, 24, .88);
}

.hairline-gold {
  height: 1px;
  border: 0;
  margin-block: clamp(1.4rem, 3vw, 2.4rem);
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: .7;
}

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

.grid--2 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }

/* ---------- 5. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5em;
  padding: .72em 1.35em;
  font-family: var(--font-body);
  font-size: .92rem;
  font-weight: 500;
  letter-spacing: .05em;
  line-height: 1.3;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color var(--dur) ease, color var(--dur) ease,
              border-color var(--dur) ease, box-shadow var(--dur) ease;
}

.btn--primary {
  background-color: var(--cinnabar);
  border-color: var(--cinnabar-deep);
  color: var(--paper);
  box-shadow: inset 0 0 0 1px rgba(231, 201, 126, .34),
              0 10px 22px -18px rgba(111, 29, 26, .95);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background-color: var(--cinnabar-deep);
  color: var(--paper);
  box-shadow: inset 0 0 0 1px rgba(231, 201, 126, .6),
              0 0 0 4px rgba(231, 201, 126, .22),
              0 12px 26px -18px rgba(111, 29, 26, 1);
}

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

.btn--ghost:hover,
.btn--ghost:focus-visible {
  background-color: rgba(231, 201, 126, .3);
  color: var(--cinnabar-deep);
  border-color: var(--gold);
}

.btn--ghost.is-copied,
.btn--primary.is-copied {
  background-color: var(--ink-green);
  color: var(--gold-warm);
}

.btn--block {
  display: flex;
  width: 100%;
}

.btn--sm {
  padding: .5em 1em;
  font-size: .82rem;
}

/* ---------- 6. Skip link ---------- */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  z-index: 200;
  padding: .7rem 1.1rem;
  background-color: var(--ink-green);
  color: var(--paper);
  font-size: .88rem;
  text-decoration: none;
  border: 1px solid var(--gold-warm);
  border-radius: var(--radius);
  transition: top var(--dur) ease;
}

.skip-link:focus-visible {
  top: .8rem;
  color: var(--gold-warm);
}

/* ---------- 7. Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background-color: rgba(246, 240, 228, .95);
  border-bottom: 1px solid var(--line);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.header-progress {
  position: relative;
  height: 3px;
  background-color: rgba(33, 28, 24, .09);
  overflow: hidden;
}

.header-progress__bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--cinnabar) 0%, var(--cinnabar) 55%, var(--gold) 100%);
  transition: width 120ms linear;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: clamp(.7rem, 1.8vw, 1.5rem);
  width: 100%;
  max-width: var(--page-max);
  margin-inline: auto;
  padding: clamp(.6rem, 1.4vw, .9rem) var(--gutter);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  text-decoration: none;
  color: var(--ink);
  flex: 0 0 auto;
}

.brand:hover { color: var(--ink); }

.brand__seal {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  font-family: var(--font-display);
  font-size: 1.4rem;
  line-height: 1;
  color: var(--paper);
  background-color: var(--cinnabar);
  border-radius: 3px;
  box-shadow: inset 0 0 0 1px rgba(231, 201, 126, .7),
              inset 0 0 0 4px rgba(163, 49, 42, .9),
              0 8px 18px -14px rgba(111, 29, 26, .9);
  transform: rotate(-3deg);
}

.brand__text {
  display: grid;
  gap: .1rem;
}

.brand__name {
  font-family: var(--font-display);
  font-size: 1.2rem;
  line-height: 1.2;
  letter-spacing: .09em;
  color: var(--ink);
}

.brand__tagline {
  font-family: var(--font-mono);
  font-size: .64rem;
  letter-spacing: .16em;
  color: var(--sage);
}

.header-divider {
  flex: 1 1 auto;
  height: 1px;
  min-width: 1.5rem;
  background: linear-gradient(90deg, transparent, var(--line-gold) 22%, var(--line-gold) 78%, transparent);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(.4rem, 1.2vw, 1rem);
  flex: 0 0 auto;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(.25rem, 1.1vw, 1rem);
}

.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: .38em;
  padding: .55rem .2rem .45rem;
  font-size: .93rem;
  line-height: 1.3;
  text-decoration: none;
  color: var(--ink);
  border-bottom: 2px solid transparent;
  transition: color var(--dur) ease, border-color var(--dur) ease;
}

.site-nav__link:hover {
  color: var(--cinnabar);
  border-bottom-color: var(--gold-warm);
}

.site-nav__link[aria-current="page"] {
  color: var(--cinnabar-deep);
  border-bottom-color: var(--cinnabar);
}

.site-nav__index {
  font-family: var(--font-mono);
  font-size: .6rem;
  letter-spacing: .08em;
  color: var(--sage);
}

.site-nav__link[aria-current="page"] .site-nav__index {
  color: var(--gold);
}

.site-nav__foot {
  display: none;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: .6rem;
  flex: 0 0 auto;
}

.header-cta {
  padding: .62em 1.15em;
  font-size: .86rem;
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: .5rem;
  padding: .5rem .7rem;
  border: 1px solid var(--line-gold);
  border-radius: var(--radius);
  background-color: rgba(231, 201, 126, .12);
  color: var(--cinnabar-deep);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  cursor: pointer;
  transition: background-color var(--dur) ease, border-color var(--dur) ease;
}

.nav-toggle:hover { border-color: var(--gold); }

.nav-toggle__bars {
  display: grid;
  gap: 3px;
  width: 16px;
}

.nav-toggle__bars span {
  display: block;
  height: 1.5px;
  background-color: currentColor;
  border-radius: 1px;
  transition: transform var(--dur) ease, opacity var(--dur) ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(4.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-4.5px) rotate(-45deg); }

/* ---------- 8. Footer ---------- */
.site-footer {
  position: relative;
  overflow: hidden;
  margin-top: clamp(2.6rem, 7vw, 5.5rem);
  background-color: var(--ink-green);
  color: var(--paper);
  border-top: 1px solid var(--gold);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cinnabar), var(--gold), var(--cinnabar-deep));
  opacity: .85;
}

.footer-inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--page-max);
  margin-inline: auto;
  padding: clamp(2.2rem, 5vw, 3.6rem) var(--gutter) 1.6rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.4fr;
  gap: clamp(1.6rem, 3.2vw, 2.8rem);
}

.footer-brand__mark {
  display: flex;
  align-items: center;
  gap: .7rem;
  margin-bottom: .55rem;
}

.footer-seal {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  font-family: var(--font-display);
  font-size: 1.25rem;
  line-height: 1;
  color: var(--gold-warm);
  border: 1px solid var(--gold);
  border-radius: 3px;
  box-shadow: inset 0 0 0 3px rgba(24, 58, 50, 1), inset 0 0 0 4px rgba(201, 154, 61, .55);
  transform: rotate(-3deg);
}

.footer-brand__name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: .1em;
  color: var(--paper);
}

.footer-brand__tagline {
  display: block;
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .18em;
  color: var(--sage);
  margin-bottom: .9rem;
}

.footer-summary {
  max-width: 24em;
  font-size: .92rem;
  line-height: 1.75;
  color: rgba(246, 240, 228, .8);
}

.footer-col__title {
  font-family: var(--font-mono);
  font-size: .68rem;
  font-weight: 400;
  letter-spacing: .2em;
  color: var(--gold-warm);
  padding-bottom: .55rem;
  margin-bottom: .95rem;
  border-bottom: 1px solid rgba(231, 201, 126, .28);
}

.footer-links {
  display: grid;
  gap: .55rem;
}

.footer-links a {
  display: inline-block;
  font-size: .93rem;
  color: rgba(246, 240, 228, .84);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) ease, border-color var(--dur) ease;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--gold-warm);
  border-bottom-color: var(--gold);
}

.footer-contact {
  display: grid;
  gap: .8rem;
}

.footer-contact__row {
  display: grid;
  gap: .12rem;
}

.footer-contact__label {
  font-family: var(--font-mono);
  font-size: .64rem;
  letter-spacing: .18em;
  color: var(--sage);
}

.footer-contact__value {
  font-size: .9rem;
  line-height: 1.65;
  color: rgba(246, 240, 228, .9);
  word-break: break-word;
}

.footer-contact__link {
  display: inline-block;
  margin-top: .9rem;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .1em;
  color: var(--gold-warm);
  text-decoration: none;
  border-bottom: 1px solid rgba(231, 201, 126, .45);
  padding-bottom: 2px;
  transition: color var(--dur) ease, border-color var(--dur) ease;
}

.footer-contact__link:hover {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

.footer-note {
  margin-top: .8rem;
  font-size: .76rem;
  line-height: 1.7;
  color: var(--sage);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .8rem 1.6rem;
  margin-top: clamp(1.8rem, 4vw, 2.8rem);
  padding-top: 1.25rem;
  border-top: 1px solid rgba(231, 201, 126, .24);
}

.footer-legal__links {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem 1.3rem;
}

.footer-link {
  font-size: .82rem;
  color: rgba(246, 240, 228, .78);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) ease, border-color var(--dur) ease;
}

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

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem 1.3rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--sage);
}

.footer-stamp {
  position: absolute;
  right: clamp(1rem, 5vw, 4rem);
  bottom: clamp(3rem, 8vw, 5rem);
  z-index: 0;
  display: grid;
  place-items: center;
  width: 6.5rem;
  height: 6.5rem;
  font-family: var(--font-display);
  font-size: 1.3rem;
  letter-spacing: .22em;
  color: rgba(201, 154, 61, .38);
  border: 2px solid rgba(201, 154, 61, .3);
  border-radius: 4px;
  transform: rotate(-8deg);
  pointer-events: none;
}

/* ---------- 9. Content components ---------- */
.breadcrumb {
  padding-block: 1.1rem .2rem;
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--sage);
}

.breadcrumb__list li + li::before {
  content: "/";
  margin-right: .5rem;
  color: var(--line-gold);
}

.breadcrumb__link {
  color: var(--sage);
  text-decoration: none;
}

.breadcrumb__link:hover { color: var(--cinnabar); }

.breadcrumb__list [aria-current="page"] { color: var(--cinnabar-deep); }

.card {
  position: relative;
  padding: clamp(1.1rem, 2.2vw, 1.6rem);
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  transition: border-color var(--dur) ease, background-color var(--dur) ease,
              box-shadow var(--dur) ease, transform var(--dur) ease;
}

.card h3 { margin-bottom: .4rem; }

.card p {
  font-size: .94rem;
  line-height: 1.75;
  color: rgba(33, 28, 24, .82);
}

.card--file {
  overflow: hidden;
  padding-right: clamp(2rem, 4vw, 2.8rem);
}

.card--file::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 2.1rem;
  height: 2.1rem;
  background: linear-gradient(225deg, var(--paper) 0 48%, var(--paper-2) 48% 100%);
  border-left: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: width var(--dur) ease, height var(--dur) ease;
}

.card--file:hover {
  border-color: var(--line-gold);
  box-shadow: 0 1px 0 rgba(33, 28, 24, .04), 0 24px 44px -32px rgba(111, 29, 26, .55);
}

.card--file:hover::after {
  width: 2.9rem;
  height: 2.9rem;
}

.card--step {
  border-left: 3px solid var(--gold);
}

.card--alert {
  border-left: 3px solid var(--brick);
  background-color: rgba(181, 84, 74, .06);
}

.path {
  display: grid;
  gap: .9rem;
  counter-reset: path;
}

.path__item {
  position: relative;
  display: grid;
  grid-template-columns: 2.6rem 1fr;
  gap: .2rem .95rem;
  padding: .95rem 1.1rem;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-left: 2px solid var(--gold);
  border-radius: var(--radius);
  transition: border-color var(--dur) ease, background-color var(--dur) ease;
}

.path__item::before {
  counter-increment: path;
  content: counter(path, decimal-leading-zero);
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1.4;
  color: rgba(163, 49, 42, .55);
}

.path__item:hover {
  border-color: var(--line-gold);
  background-color: rgba(231, 201, 126, .16);
}

.path__title {
  font-family: var(--font-display);
  font-size: 1.08rem;
  line-height: 1.35;
  color: var(--ink);
}

.path__text {
  font-size: .9rem;
  line-height: 1.7;
  color: rgba(33, 28, 24, .78);
}

.seal-tag {
  display: inline-flex;
  align-items: center;
  padding: .2em .6em;
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .16em;
  color: var(--cinnabar);
  border: 1px solid currentColor;
  border-radius: 1px;
  transform: rotate(-2deg);
}

.chapter-nav {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem .9rem;
}

.chapter-nav__link {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  text-decoration: none;
  color: var(--sage);
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) ease, border-color var(--dur) ease;
}

.chapter-nav__link:hover { color: var(--cinnabar); }

.chapter-nav__link.is-active {
  color: var(--cinnabar-deep);
  border-bottom-color: var(--cinnabar);
}

.media-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background-color: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.media-frame > img,
.media-frame > svg,
.media-frame > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

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

.media-frame__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  right: 0;
  padding: .6rem .9rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .1em;
  color: var(--paper);
  background: linear-gradient(180deg, transparent, rgba(24, 58, 50, .82));
}

/* ---------- 10. Responsive ---------- */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  html { scroll-padding-top: 6rem; }

  .header-divider { display: none; }
  .header-cta { display: none; }
  .nav-toggle { display: inline-flex; }

  .header-inner {
    justify-content: space-between;
    gap: .6rem;
  }

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 90;
    width: min(21rem, 86vw);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: clamp(1.4rem, 5vw, 2rem) clamp(1.1rem, 4vw, 1.6rem) 2rem;
    background-color: var(--ink-green);
    border-left: 1px solid rgba(231, 201, 126, .35);
    box-shadow: -18px 0 48px -28px rgba(0, 0, 0, .8);
    overflow-y: auto;
    visibility: hidden;
    transform: translateX(102%);
    transition: transform var(--dur) ease, visibility var(--dur) ease;
  }

  .site-nav[data-open="true"] {
    visibility: visible;
    transform: translateX(0);
  }

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

  .site-nav__link {
    display: flex;
    align-items: baseline;
    gap: .7em;
    padding: .85rem 0;
    font-size: 1rem;
    color: rgba(246, 240, 228, .88);
    border-bottom: 1px solid var(--line-paper);
    border-top: 0;
    border-left: 2px solid transparent;
  }

  .site-nav__link:hover {
    color: var(--gold-warm);
    border-bottom-color: var(--line-paper);
    border-left-color: var(--gold-warm);
  }

  .site-nav__link[aria-current="page"] {
    color: var(--gold-warm);
    border-bottom-color: var(--line-paper);
    border-left-color: var(--gold);
  }

  .site-nav__index {
    color: var(--gold);
    font-size: .66rem;
  }

  .site-nav__foot {
    display: block;
    margin-top: 1.4rem;
  }

  .footer-stamp { display: none; }
}

@media (max-width: 560px) {
  .brand__seal { width: 36px; height: 36px; font-size: 1.2rem; }
  .brand__name { font-size: 1.05rem; }
  .brand__tagline { font-size: .58rem; letter-spacing: .12em; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-legal { flex-direction: column; align-items: flex-start; }
  .path__item { grid-template-columns: 2rem 1fr; }
}

/* ---------- 11. Motion preferences ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }

  .header-progress__bar { transition: none; }
  .card--file:hover { transform: none; }
}