/* ============================================================
   至尊品牌信誉 · 共享站点样式 /assets/site.css
   深靛蓝档案馆：底图层 → 纸面层 → 标签层 → 印记层
   ============================================================ */

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

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

body {
  margin: 0;
  background-color: var(--ind-base);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

ul, ol {
  margin: 0;
  padding: 0;
  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 {
  display: block;
  max-width: 100%;
}

/* ---------- 2. 变量 ---------- */
:root {
  --ind-base: #101A38;
  --ind-deep: #16224A;
  --ind-mid: #24356B;
  --ind-light: #3B4E8C;
  --mist: #8E9BC4;
  --gold: #C9A24A;
  --gold-hi: #E8D3A0;
  --jade: #4F8C86;
  --paper: #F4EFE4;
  --ink: #0A0F1E;
  --cinnabar: #C2453C;

  --font-display: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "SimSun", serif;
  --font-sans: "Inter", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", Menlo, Consolas, monospace;

  --wrap: 1240px;
  --gutter: clamp(1.15rem, 4vw, 3.25rem);
  --hairline: 1px solid rgba(201, 162, 74, 0.4);
  --hair-soft: 1px solid rgba(142, 155, 196, 0.22);
  --shadow-panel: 0 24px 60px rgba(10, 15, 30, 0.45);
  --ease-out: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. 基础排版 ---------- */
::selection {
  background-color: var(--gold);
  color: var(--ink);
}

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

.section--paper :focus-visible {
  outline-color: var(--ind-mid);
}

/* ---------- 4. 容器 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 300;
  transform: translateY(-180%);
  padding: 0.65rem 1.1rem;
  background-color: var(--gold);
  color: var(--ink);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  border-radius: 2px;
  transition: transform 0.2s var(--ease-out);
}

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

/* ---------- 5. 区块 ---------- */
.section {
  padding-block: clamp(2.5rem, 6vw, 5rem);
}

.section--deep {
  background-color: var(--ind-deep);
}

.section--paper {
  background-color: var(--paper);
  color: var(--ink);
  border-block: 1px solid rgba(10, 15, 30, 0.18);
}

.section--paper .lede {
  color: rgba(10, 15, 30, 0.78);
}

.section--paper .eyebrow {
  color: var(--ind-mid);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  line-height: 1.6;
  color: var(--gold);
  text-transform: uppercase;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.5rem, 3vw, 1.9rem);
  line-height: 1.35;
  letter-spacing: 0.01em;
  color: var(--paper);
}

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

.lede {
  max-width: 46ch;
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  line-height: 1.8;
  color: rgba(244, 239, 228, 0.8);
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.72rem 1.35rem;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1.2;
  border: 1px solid transparent;
  border-radius: 2px;
  transition: background-color 0.2s var(--ease-out),
              color 0.2s var(--ease-out),
              border-color 0.2s var(--ease-out),
              transform 0.2s var(--ease-out);
}

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

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

.btn--gold:hover {
  background-color: var(--gold-hi);
  border-color: var(--gold-hi);
}

.btn--ghost {
  background-color: transparent;
  border-color: rgba(201, 162, 74, 0.55);
  color: var(--gold-hi);
}

.btn--ghost:hover {
  background-color: rgba(201, 162, 74, 0.12);
  border-color: var(--gold);
}

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

.btn--paper:hover {
  background-color: #FFFFFF;
  border-color: #FFFFFF;
}

/* ---------- 7. 状态徽标 ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.22rem 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  line-height: 1.5;
  white-space: nowrap;
  border: 1px solid currentColor;
  border-radius: 2px;
}

.badge::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: currentColor;
  flex: 0 0 auto;
}

.badge--cert {
  color: var(--gold);
}

.badge--live {
  color: var(--jade);
}

.badge--archived {
  color: var(--mist);
}

.badge--alert {
  color: var(--paper);
  border-color: rgba(194, 69, 60, 0.85);
}

.badge--alert::before {
  background-color: var(--cinnabar);
}

/* ---------- 8. 面包屑 ---------- */
.breadcrumb {
  padding-block: 0.9rem;
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--mist);
}

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

.breadcrumb__list > li + li::before {
  content: "/";
  color: rgba(142, 155, 196, 0.6);
}

.breadcrumb__list a:hover {
  color: var(--gold);
}

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

/* ---------- 9. 折叠面板 ---------- */
.panel {
  border-top: var(--hair-soft);
  background-color: rgba(36, 53, 107, 0.28);
}

.panel:last-child {
  border-bottom: var(--hair-soft);
}

.panel__head {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  width: 100%;
  padding: 1.05rem 1rem;
  text-align: left;
  transition: background-color 0.24s var(--ease-out), color 0.24s var(--ease-out);
}

.panel__head:hover {
  background-color: rgba(201, 162, 74, 0.09);
  color: var(--gold-hi);
}

.panel__head::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1;
  color: var(--gold);
  transition: transform 0.24s var(--ease-out);
}

.panel[data-open] .panel__head {
  background-color: rgba(201, 162, 74, 0.1);
  color: var(--gold-hi);
}

.panel[data-open] .panel__head::after {
  content: "−";
}

.panel__index {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--gold);
  flex: 0 0 auto;
}

.panel__title {
  flex: 1;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.6;
}

.panel__body {
  padding: 0 1rem 1.25rem;
  font-size: 0.95rem;
  line-height: 1.8;
  color: rgba(244, 239, 228, 0.82);
}

/* ---------- 10. 图片容器 ---------- */
.media-frame {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border: 1px solid rgba(201, 162, 74, 0.3);
  border-radius: 2px;
  background-image: linear-gradient(150deg, var(--ind-mid) 0%, var(--ind-deep) 58%, var(--ind-base) 100%);
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid rgba(232, 211, 160, 0.16);
  pointer-events: none;
}

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

.media-frame__label {
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  line-height: 1.7;
  text-align: center;
  color: rgba(142, 155, 196, 0.78);
}

.media-frame--wide {
  aspect-ratio: 16 / 9;
}

.media-frame--tall {
  aspect-ratio: 3 / 4;
}

/* ---------- 11. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(16, 26, 56, 0.95);
  border-bottom: 1px solid rgba(201, 162, 74, 0.32);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  transition: background-color 0.24s var(--ease-out), box-shadow 0.24s var(--ease-out);
}

.site-header[data-scrolled] {
  background-color: rgba(10, 15, 30, 0.97);
  box-shadow: 0 14px 34px rgba(10, 15, 30, 0.42);
}

.header-rail {
  background-color: rgba(10, 15, 30, 0.55);
  border-bottom: 1px solid rgba(142, 155, 196, 0.18);
}

.header-rail__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.35rem 1rem;
  min-height: 34px;
  padding-block: 0.35rem;
}

.rail-note {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  line-height: 1.5;
  color: var(--mist);
}

.rail-dot {
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  border-radius: 50%;
  background-color: var(--jade);
  box-shadow: 0 0 0 3px rgba(79, 140, 134, 0.22);
}

.rail-mark {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  line-height: 1.5;
  color: var(--gold);
}

.command-bar {
  position: relative;
}

.command-bar__inner {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  min-height: 72px;
  padding-block: 0.6rem;
  transition: min-height 0.24s var(--ease-out);
}

.site-header[data-scrolled] .command-bar__inner {
  min-height: 60px;
}

/* 品牌 + 印记 */
.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 0 0 auto;
}

.brand__seal {
  position: relative;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  flex: 0 0 auto;
  transform: rotate(-6deg);
  border: 1px solid var(--gold);
  background-color: rgba(201, 162, 74, 0.08);
  color: var(--gold);
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  line-height: 1.1;
  transition: transform 0.3s var(--ease-out);
}

.brand__seal::before {
  content: "";
  position: absolute;
  inset: 3px;
  border: 1px solid rgba(232, 211, 160, 0.45);
}

.brand__seal-text {
  position: relative;
  z-index: 1;
}

.brand:hover .brand__seal,
.brand:focus-visible .brand__seal {
  transform: rotate(-2deg) scale(1.02);
}

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

.brand__name {
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1.25;
  color: var(--paper);
}

.brand__sub {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  line-height: 1.4;
  color: var(--mist);
}

/* 移动端索引按钮 */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: auto;
  padding: 0.55rem 0.8rem;
  border: 1px solid rgba(201, 162, 74, 0.5);
  border-radius: 2px;
  color: var(--gold-hi);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  line-height: 1;
  transition: background-color 0.2s var(--ease-out), border-color 0.2s var(--ease-out);
}

.nav-toggle:hover {
  background-color: rgba(201, 162, 74, 0.12);
  border-color: var(--gold);
}

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
  width: 16px;
}

.nav-toggle__bars > span {
  display: block;
  height: 1px;
  width: 100%;
  background-color: currentColor;
  transition: transform 0.24s var(--ease-out), opacity 0.24s var(--ease-out);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars > span:nth-child(1) {
  transform: translateY(4px) 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(-4px) rotate(-45deg);
}

/* 主导航（移动优先：下拉面板） */
.primary-nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  display: none;
  flex-direction: column;
  align-items: stretch;
  gap: 0;
  max-height: calc(100vh - 116px);
  overflow-y: auto;
  padding: 0.75rem var(--gutter) 1.4rem;
  background-color: var(--ind-deep);
  border-bottom: 1px solid rgba(201, 162, 74, 0.45);
  box-shadow: var(--shadow-panel);
}

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

.nav-list {
  display: flex;
  flex-direction: column;
}

.nav-item {
  display: flex;
}

.nav-link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  width: 100%;
  padding: 0.85rem 0;
  border-bottom: 1px solid rgba(142, 155, 196, 0.16);
  color: rgba(244, 239, 228, 0.82);
  font-size: 1rem;
  line-height: 1.5;
  transition: color 0.2s var(--ease-out);
}

.nav-index {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--mist);
  flex: 0 0 auto;
  transition: color 0.2s var(--ease-out);
}

.nav-label {
  white-space: nowrap;
}

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

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

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

.nav-link[aria-current="page"] .nav-index {
  color: var(--gold-hi);
}

.nav-quick {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 1.1rem;
}

.quick-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.62rem 0.95rem;
  border: 1px solid rgba(201, 162, 74, 0.5);
  border-radius: 2px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1.4;
  color: var(--gold-hi);
  transition: background-color 0.2s var(--ease-out),
              color 0.2s var(--ease-out),
              border-color 0.2s var(--ease-out);
}

.quick-link:hover {
  background-color: rgba(201, 162, 74, 0.14);
  border-color: var(--gold);
  color: #FFFFFF;
}

.quick-link--solid {
  background-color: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
}

.quick-link--solid:hover {
  background-color: var(--gold-hi);
  border-color: var(--gold-hi);
  color: var(--ink);
}

.quick-link--alert {
  border-color: rgba(194, 69, 60, 0.8);
  color: var(--paper);
}

.quick-link--alert::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  border-radius: 50%;
  background-color: var(--cinnabar);
}

.quick-link--alert:hover {
  background-color: rgba(194, 69, 60, 0.18);
  border-color: var(--cinnabar);
  color: #FFFFFF;
}

/* 阅读进度 */
.header-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background-color: transparent;
  pointer-events: none;
}

.header-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background-color: var(--gold);
  transition: width 0.12s linear;
}

/* ---------- 12. 页脚 ---------- */
.site-footer {
  position: relative;
  background-color: var(--ink);
  color: var(--paper);
  border-top: 1px solid rgba(201, 162, 74, 0.42);
  padding-block: clamp(2.25rem, 5vw, 4rem) 1.5rem;
}

.footer-topline {
  height: 4px;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(201, 162, 74, 0.65) 0,
    rgba(201, 162, 74, 0.65) 26px,
    transparent 26px,
    transparent 52px
  );
  opacity: 0.55;
  margin-bottom: clamp(1.75rem, 4vw, 3rem);
}

.footer-main {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.25rem;
}

.footer-seal {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  margin-bottom: 0.9rem;
  transform: rotate(-6deg);
  border: 1px solid var(--gold);
  background-color: rgba(201, 162, 74, 0.08);
  color: var(--gold);
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  line-height: 1.1;
  box-shadow: inset 0 0 0 3px var(--ink), inset 0 0 0 4px rgba(232, 211, 160, 0.4);
}

.footer-brand__name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1.3;
  color: var(--paper);
}

.footer-brand__meta {
  margin-top: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  line-height: 1.6;
  color: var(--gold);
}

.footer-brand__note {
  margin-top: 0.9rem;
  max-width: 32ch;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--mist);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: 1.6rem 1.4rem;
}

.footer-col__title {
  margin-bottom: 0.9rem;
  padding-bottom: 0.5rem;
  border-bottom: var(--hair-soft);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.16em;
  line-height: 1.5;
  color: var(--mist);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.footer-link {
  display: inline-block;
  padding-block: 0.28rem;
  font-size: 0.92rem;
  line-height: 1.6;
  color: rgba(244, 239, 228, 0.82);
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease-out), border-color 0.2s var(--ease-out);
}

.footer-link:hover,
.footer-link:focus-visible {
  color: var(--gold);
  border-bottom-color: rgba(201, 162, 74, 0.5);
}

.footer-contact {
  border-top: var(--hair-soft);
  padding-top: 1rem;
}

.contact-list {
  display: flex;
  flex-direction: column;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  padding-block: 0.5rem;
  border-bottom: 1px dashed rgba(142, 155, 196, 0.18);
}

.contact-item dt {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  line-height: 1.6;
  color: var(--mist);
}

.contact-item dd {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--paper);
  word-break: break-word;
}

.contact-note {
  margin-top: 0.9rem;
  font-size: 0.8rem;
  line-height: 1.75;
  color: var(--mist);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.9rem 1.4rem;
  margin-top: clamp(2rem, 4vw, 3rem);
  padding-top: 1.2rem;
  border-top: var(--hair-soft);
}

.footer-legal {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.05em;
  line-height: 1.7;
  color: var(--mist);
}

.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1.1rem;
}

.footer-legal-links .footer-link {
  font-size: 0.8rem;
  color: var(--mist);
}

.footer-legal-links .footer-link:hover {
  color: var(--gold);
}

.footer-top {
  padding: 0.5rem 0.85rem;
  border: 1px solid rgba(201, 162, 74, 0.45);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  line-height: 1.4;
  color: var(--gold-hi);
  transition: background-color 0.2s var(--ease-out), color 0.2s var(--ease-out);
}

.footer-top:hover {
  background-color: var(--gold);
  color: var(--ink);
}

/* ---------- 13. 显现动效 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.32s var(--ease-out), transform 0.32s var(--ease-out);
}

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

/* ---------- 14. 断点 ---------- */
@media (min-width: 640px) {
  .nav-quick {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .footer-contact {
    border-top: 0;
    padding-top: 0;
  }
}

@media (min-width: 768px) {
  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1024px) {
  .nav-toggle {
    display: none;
  }

  .primary-nav {
    position: static;
    display: flex;
    flex: 1;
    flex-direction: row;
    align-items: center;
    gap: clamp(0.5rem, 1.6vw, 1.6rem);
    max-height: none;
    overflow: visible;
    padding: 0;
    background-color: transparent;
    border-bottom: 0;
    box-shadow: none;
  }

  .nav-list {
    flex-direction: row;
    align-items: center;
    gap: clamp(0.2rem, 0.9vw, 0.85rem);
  }

  .nav-item {
    display: flex;
  }

  .nav-link {
    width: auto;
    padding: 0.55rem 0.5rem;
    border-bottom: 0;
    font-size: 0.9rem;
  }

  .nav-link::after {
    content: "";
    position: absolute;
    left: 0.5rem;
    right: 0.5rem;
    bottom: 0.15rem;
    height: 1px;
    background-color: var(--gold);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.24s var(--ease-out);
  }

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

  .nav-link[aria-current="page"]::after {
    background-color: var(--gold-hi);
    height: 2px;
  }

  .nav-quick {
    flex-direction: row;
    flex-wrap: nowrap;
    margin-top: 0;
    margin-left: auto;
  }

  .quick-link {
    padding: 0.5rem 0.85rem;
    font-size: 0.8rem;
  }

  .footer-main {
    grid-template-columns: 1.1fr 1.7fr 1fr;
    gap: clamp(1.5rem, 3.5vw, 3.25rem);
  }

  .footer-brand {
    grid-column: auto;
  }
}

@media (min-width: 1280px) {
  .brand__seal {
    width: 50px;
    height: 50px;
    font-size: 0.78rem;
  }

  .brand__name {
    font-size: 1.2rem;
  }
}

/* ---------- 15. 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

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

  .brand:hover .brand__seal,
  .brand:focus-visible .brand__seal {
    transform: rotate(-6deg);
  }
}