/* ==========================================================================
   恒宝平台 · 中国站 共享样式 /assets/site.css
   目录：1 变量 2 Reset 3 基础排版 4 布局容器 5 通用组件 6 图片容器
        7 页头 8 页脚 9 响应式与无障碍
   ========================================================================== */

/* 1 变量 ---------------------------------------------------------------- */
:root {
  --hb-ink: #072A38;
  --hb-deep: #0B3B4C;
  --hb-mist: #4A7C8C;
  --hb-brass: #C08A3E;
  --hb-brass-soft: #E3C48C;
  --hb-coral: #E86F4A;
  --hb-mint: #3FAE8C;
  --hb-stone: #6E7378;
  --hb-cream: #F5F1E8;
  --hb-clay: #B9663F;
  --hb-white: #FFFFFF;

  --hb-line: rgba(11, 59, 76, 0.14);
  --hb-line-soft: rgba(11, 59, 76, 0.08);
  --hb-text: #22404B;

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

  --hb-shell: 1180px;
  --hb-radius-lg: 22px;
  --hb-radius-md: 14px;
  --hb-radius-sm: 8px;
  --hb-ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* 2 Reset --------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--hb-cream);
  color: var(--hb-text);
  font-family: var(--hb-font-sans);
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

button { font: inherit; }

#main-content { outline: none; }

/* 3 基础排版 ------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  margin: 0;
  color: var(--hb-deep);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.004em;
}

h1 { font-size: clamp(34px, 4.6vw, 52px); line-height: 1.14; }
h2 { font-size: clamp(26px, 3.2vw, 38px); }
h3 { font-size: clamp(20px, 2.4vw, 28px); }
h4 { font-size: clamp(18px, 2vw, 22px); }
h5, h6 { font-size: 17px; }

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

a { color: inherit; }

strong { font-weight: 700; }

.hb-section--dark h1,
.hb-section--dark h2,
.hb-section--dark h3,
.hb-section--dark h4,
.hb-section--ink h1,
.hb-section--ink h2,
.hb-section--ink h3,
.hb-section--ink h4 { color: var(--hb-cream); }

/* 4 布局容器 ------------------------------------------------------------- */
.hb-shell {
  width: 100%;
  max-width: var(--hb-shell);
  margin: 0 auto;
  padding: 0 28px;
}

.hb-section { padding: clamp(48px, 7vw, 96px) 0; }
.hb-section--tight { padding: clamp(28px, 4vw, 48px) 0; }

.hb-section--paper { background: var(--hb-white); }
.hb-section--dark {
  background:
    radial-gradient(90% 130% at 88% -10%, rgba(192, 138, 62, 0.16), transparent 62%),
    var(--hb-deep);
  color: rgba(245, 241, 232, 0.82);
}
.hb-section--ink {
  background:
    radial-gradient(80% 120% at 8% 0%, rgba(63, 174, 140, 0.12), transparent 58%),
    var(--hb-ink);
  color: rgba(245, 241, 232, 0.82);
}

.hb-section__head {
  max-width: 62ch;
  margin-bottom: clamp(24px, 3.4vw, 44px);
}

.hb-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--hb-font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--hb-brass);
}

.hb-eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
  opacity: 0.7;
  flex: none;
}

.hb-section--dark .hb-eyebrow,
.hb-section--ink .hb-eyebrow { color: var(--hb-brass-soft); }

.hb-lede {
  margin: 14px 0 0;
  font-size: 19px;
  line-height: 1.7;
  color: var(--hb-stone);
}

.hb-section--dark .hb-lede,
.hb-section--ink .hb-lede { color: rgba(245, 241, 232, 0.72); }

.hb-grid {
  display: grid;
  gap: clamp(18px, 2.4vw, 28px);
}

.hb-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.hb-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.hb-grid--7-4 { grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); }
.hb-grid--4-7 { grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); }

.hb-rule {
  border: 0;
  height: 1px;
  margin: clamp(28px, 4vw, 56px) 0;
  background: var(--hb-line);
}

.hb-section--dark .hb-rule,
.hb-section--ink .hb-rule { background: rgba(245, 241, 232, 0.16); }

/* 5 通用组件 ------------------------------------------------------------- */
.hb-mono { font-family: var(--hb-font-mono); letter-spacing: 0.04em; }

.hb-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.22s var(--hb-ease), color 0.22s var(--hb-ease), border-color 0.22s var(--hb-ease);
}

.hb-btn--solid { background: var(--hb-deep); color: var(--hb-cream); }
.hb-btn--solid:hover,
.hb-btn--solid:focus-visible { background: var(--hb-ink); }

.hb-btn--brass { background: var(--hb-brass); color: var(--hb-white); }
.hb-btn--brass:hover,
.hb-btn--brass:focus-visible { background: #A9752F; }

.hb-btn--ghost {
  background: transparent;
  color: var(--hb-deep);
  border-color: rgba(11, 59, 76, 0.28);
}
.hb-btn--ghost:hover,
.hb-btn--ghost:focus-visible {
  color: var(--hb-brass);
  border-color: var(--hb-brass);
  background: rgba(227, 196, 140, 0.16);
}

.hb-btn--on-dark {
  background: transparent;
  color: var(--hb-cream);
  border-color: rgba(245, 241, 232, 0.4);
}
.hb-btn--on-dark:hover,
.hb-btn--on-dark:focus-visible {
  color: var(--hb-brass-soft);
  border-color: var(--hb-brass-soft);
}

.hb-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid currentColor;
  border-radius: 6px;
  background: rgba(110, 115, 120, 0.06);
  color: var(--hb-stone);
  font-family: var(--hb-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  line-height: 1.5;
}

.hb-tag--brass { color: #9A6D2A; background: rgba(227, 196, 140, 0.24); border-color: rgba(192, 138, 62, 0.5); }
.hb-tag--mint { color: #2C7D64; background: rgba(63, 174, 140, 0.14); border-color: rgba(63, 174, 140, 0.42); }
.hb-tag--coral { color: #C2522F; background: rgba(232, 111, 74, 0.13); border-color: rgba(232, 111, 74, 0.42); }
.hb-tag--mist { color: #3D6673; background: rgba(74, 124, 140, 0.12); border-color: rgba(74, 124, 140, 0.36); }

.hb-num {
  display: block;
  font-family: var(--hb-font-mono);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--hb-brass);
}
.hb-num--xl { font-size: clamp(38px, 5.4vw, 60px); }
.hb-num--lg { font-size: clamp(30px, 3.6vw, 40px); }
.hb-num--md { font-size: 22px; }

.hb-num__unit {
  margin-left: 8px;
  font-family: var(--hb-font-sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--hb-stone);
}

.hb-section--dark .hb-num,
.hb-section--ink .hb-num { color: var(--hb-brass-soft); }
.hb-section--dark .hb-num__unit,
.hb-section--ink .hb-num__unit { color: rgba(245, 241, 232, 0.66); }

.hb-card {
  position: relative;
  padding: clamp(20px, 2.6vw, 30px);
  border: 1px solid var(--hb-line);
  border-radius: var(--hb-radius-md);
  background: var(--hb-white);
  transition: border-color 0.24s var(--hb-ease), background-color 0.24s var(--hb-ease);
}

.hb-card:hover { border-color: var(--hb-brass); }

.hb-card--dossier {
  border-radius: var(--hb-radius-lg);
  overflow: hidden;
}

.hb-card--dossier::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--hb-brass);
}

.hb-card--muted { background: var(--hb-cream); border-color: var(--hb-line-soft); }
.hb-card--dark {
  background: var(--hb-ink);
  border-color: rgba(227, 196, 140, 0.22);
  color: rgba(245, 241, 232, 0.82);
}
.hb-card--dark:hover { border-color: var(--hb-brass); }

.hb-link {
  color: var(--hb-brass);
  text-decoration: none;
  padding-bottom: 2px;
  background-image: linear-gradient(currentColor, currentColor);
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 100% 1px;
  transition: background-size 0.26s var(--hb-ease);
}

.hb-link:hover,
.hb-link:focus-visible { background-size: 100% 2px; }

.hb-prose {
  max-width: 70ch;
  font-size: 17px;
  line-height: 1.78;
  color: var(--hb-text);
}

.hb-prose p { margin: 0 0 1.15em; }
.hb-prose h2 { margin: 1.6em 0 0.55em; font-size: clamp(24px, 2.8vw, 28px); }
.hb-prose h3 { margin: 1.4em 0 0.45em; font-size: clamp(19px, 2.2vw, 22px); }
.hb-prose ul,
.hb-prose ol { padding-left: 1.3em; margin: 0 0 1.15em; }
.hb-prose li { margin: 0.35em 0; }
.hb-prose a {
  color: var(--hb-brass);
  text-decoration: none;
  border-bottom: 1px solid rgba(192, 138, 62, 0.4);
  transition: border-color 0.2s var(--hb-ease);
}
.hb-prose a:hover { border-bottom-color: var(--hb-brass); }
.hb-prose strong { color: var(--hb-deep); }
.hb-prose blockquote {
  margin: 1.5em 0;
  padding: 18px 22px;
  border-left: 3px solid var(--hb-clay);
  background: rgba(185, 102, 63, 0.08);
  border-radius: 0 var(--hb-radius-sm) var(--hb-radius-sm) 0;
  color: var(--hb-deep);
}

.hb-breadcrumb { padding: 18px 0 0; }

.hb-breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--hb-font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--hb-stone);
}

.hb-breadcrumb__list li { display: flex; align-items: center; gap: 8px; }

.hb-breadcrumb__list li::after {
  content: "/";
  color: rgba(110, 115, 120, 0.5);
}

.hb-breadcrumb__list li:last-child::after { content: ""; }

.hb-breadcrumb__list a {
  color: var(--hb-mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--hb-ease), border-color 0.2s var(--hb-ease);
}

.hb-breadcrumb__list a:hover,
.hb-breadcrumb__list a:focus-visible {
  color: var(--hb-brass);
  border-bottom-color: var(--hb-brass);
}

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

.hb-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--hb-line);
  border-radius: var(--hb-radius-md);
  background: var(--hb-white);
}

.hb-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 15px;
}

.hb-table th,
.hb-table td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--hb-line);
  text-align: left;
  vertical-align: top;
}

.hb-table th {
  font-family: var(--hb-font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--hb-stone);
  background: rgba(245, 241, 232, 0.6);
}

.hb-table tbody tr:last-child td { border-bottom: 0; }
.hb-table tbody tr:hover { background: rgba(227, 196, 140, 0.12); }

.hb-table__num {
  font-family: var(--hb-font-mono);
  font-weight: 700;
  color: var(--hb-brass);
  white-space: nowrap;
}

/* 6 图片容器 ------------------------------------------------------------- */
.hb-figure { margin: 0; }

.hb-media {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--hb-line-soft);
  border-radius: var(--hb-radius-md);
  background:
    linear-gradient(135deg, rgba(11, 59, 76, 0.08), rgba(192, 138, 62, 0.14)),
    var(--hb-cream);
}

.hb-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.92);
  transition: filter 0.4s var(--hb-ease);
}

.hb-media:hover img { filter: saturate(1) brightness(1.03); }

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

.hb-media--ink {
  background:
    linear-gradient(135deg, rgba(7, 42, 56, 0.94), rgba(11, 59, 76, 0.72)),
    var(--hb-ink);
  border-color: rgba(227, 196, 140, 0.22);
}

.hb-media__cap {
  margin-top: 10px;
  font-family: var(--hb-font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--hb-stone);
}

.hb-section--dark .hb-media__cap,
.hb-section--ink .hb-media__cap { color: rgba(245, 241, 232, 0.6); }

/* 7 页头 ----------------------------------------------------------------- */
.hb-skip {
  position: absolute;
  left: 16px;
  top: -90px;
  z-index: 120;
  padding: 10px 18px;
  border-radius: 0 0 var(--hb-radius-sm) var(--hb-radius-sm);
  background: var(--hb-ink);
  color: var(--hb-cream);
  font-size: 14px;
  text-decoration: none;
  transition: top 0.2s var(--hb-ease);
}

.hb-skip:focus { top: 0; }

.hb-header {
  position: relative;
  z-index: 40;
}

.hb-masthead {
  position: relative;
  background:
    radial-gradient(120% 180% at 50% -40%, rgba(192, 138, 62, 0.16), transparent 62%),
    var(--hb-cream);
  border-bottom: 1px solid var(--hb-line);
}

.hb-masthead__inner {
  position: relative;
  max-width: var(--hb-shell);
  margin: 0 auto;
  padding: 26px 28px 22px;
  text-align: center;
}

.hb-masthead__rule {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin: 0 0 14px;
  font-family: var(--hb-font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--hb-mist);
}

.hb-masthead__rule::before,
.hb-masthead__rule::after {
  content: "";
  flex: 0 1 120px;
  height: 1px;
  background: var(--hb-line);
}

.hb-brand {
  display: inline-flex;
  align-items: baseline;
  gap: 12px;
  color: var(--hb-deep);
  text-decoration: none;
}

.hb-brand__name {
  font-size: clamp(30px, 4.4vw, 46px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: 0.06em;
  background-image: linear-gradient(var(--hb-brass), var(--hb-brass));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0 2px;
  transition: background-size 0.28s var(--hb-ease);
}

.hb-brand:hover .hb-brand__name,
.hb-brand:focus-visible .hb-brand__name { background-size: 100% 2px; }

.hb-brand__mark {
  padding: 3px 10px 3px 12px;
  border: 1px solid rgba(192, 138, 62, 0.5);
  border-radius: 999px;
  font-family: var(--hb-font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--hb-brass);
  white-space: nowrap;
  transform: translateY(-6px);
}

.hb-masthead__tagline {
  margin: 12px 0 0;
  font-size: 14px;
  letter-spacing: 0.14em;
  color: var(--hb-stone);
}

.hb-masthead__cta {
  position: absolute;
  right: 28px;
  top: 50%;
  transform: translateY(-50%);
  padding: 9px 16px;
  border: 1px solid rgba(192, 138, 62, 0.55);
  border-radius: 999px;
  background: rgba(227, 196, 140, 0.14);
  color: var(--hb-brass);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.22s var(--hb-ease), color 0.22s var(--hb-ease), border-color 0.22s var(--hb-ease);
}

.hb-masthead__cta:hover,
.hb-masthead__cta:focus-visible {
  background: var(--hb-brass);
  border-color: var(--hb-brass);
  color: var(--hb-cream);
}

.hb-indexbar {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--hb-deep);
  border-bottom: 1px solid rgba(227, 196, 140, 0.22);
  box-shadow: 0 1px 0 rgba(7, 42, 56, 0.24);
}

.hb-indexbar__inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  min-height: 56px;
  max-width: var(--hb-shell);
  margin: 0 auto;
  padding: 0 28px;
  transition: min-height 0.24s var(--hb-ease);
}

.hb-indexbar[data-condensed] .hb-indexbar__inner { min-height: 46px; }

.hb-indexbar__label {
  position: absolute;
  left: 28px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--hb-font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: rgba(245, 241, 232, 0.45);
}

.hb-nav { display: block; }

.hb-nav__list {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.hb-nav__list a {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 10px 14px;
  border-radius: var(--hb-radius-sm);
  color: rgba(245, 241, 232, 0.86);
  font-size: 15px;
  text-decoration: none;
  transition: color 0.2s var(--hb-ease), background-color 0.2s var(--hb-ease);
}

.hb-nav__list a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 6px;
  height: 2px;
  background: var(--hb-brass);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.26s var(--hb-ease);
}

.hb-nav__list a:hover,
.hb-nav__list a:focus-visible { color: var(--hb-white); }
.hb-nav__list a:hover::after,
.hb-nav__list a:focus-visible::after { transform: scaleX(1); }

.hb-nav__list a[aria-current="page"] { color: var(--hb-brass-soft); }
.hb-nav__list a[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--hb-brass-soft);
}

.hb-nav__num {
  font-family: var(--hb-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--hb-brass);
  opacity: 0.85;
}

.hb-nav__list a[aria-current="page"] .hb-nav__num {
  color: var(--hb-brass-soft);
  opacity: 1;
}

.hb-nav-toggle { display: none; }

.hb-nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px;
  height: 2px;
  background: var(--hb-brass-soft);
  transition: background-color 0.2s var(--hb-ease);
}

.hb-nav-toggle__bars::before,
.hb-nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: var(--hb-brass-soft);
  transition: transform 0.24s var(--hb-ease), top 0.24s var(--hb-ease);
}

.hb-nav-toggle__bars::before { top: -5px; }
.hb-nav-toggle__bars::after { top: 5px; }

.hb-nav-toggle__text {
  font-size: 14px;
  letter-spacing: 0.08em;
}

.hb-nav-toggle[aria-expanded="true"] .hb-nav-toggle__bars { background: transparent; }
.hb-nav-toggle[aria-expanded="true"] .hb-nav-toggle__bars::before { top: 0; transform: rotate(45deg); }
.hb-nav-toggle[aria-expanded="true"] .hb-nav-toggle__bars::after { top: 0; transform: rotate(-45deg); }

.hb-indexbar__progress {
  position: absolute;
  left: 0;
  bottom: 0;
  display: block;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--hb-brass), var(--hb-coral));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.1s linear;
}

/* 8 页脚 ----------------------------------------------------------------- */
.hb-footer {
  position: relative;
  overflow: hidden;
  background: var(--hb-ink);
  border-top: 3px solid var(--hb-brass);
  color: rgba(245, 241, 232, 0.78);
  font-size: 15px;
}

.hb-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(80% 120% at 12% 0%, rgba(192, 138, 62, 0.14), transparent 60%),
    radial-gradient(60% 100% at 92% 100%, rgba(232, 111, 74, 0.1), transparent 62%);
}

.hb-footer > * { position: relative; }

.hb-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2.1fr);
  gap: clamp(28px, 4vw, 56px);
  max-width: var(--hb-shell);
  margin: 0 auto;
  padding: clamp(40px, 5.6vw, 72px) 28px clamp(28px, 3.6vw, 44px);
}

.hb-footer__brand { min-width: 0; }

.hb-footer__logo {
  margin: 0;
  font-size: 26px;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 0.08em;
  color: var(--hb-cream);
}

.hb-footer__logo span {
  display: block;
  margin-top: 8px;
  font-family: var(--hb-font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.22em;
  color: var(--hb-brass-soft);
}

.hb-footer__blurb {
  max-width: 34ch;
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(245, 241, 232, 0.62);
}

.hb-footer__nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(18px, 3vw, 36px);
}

.hb-footer__col { min-width: 0; }

.hb-footer__title {
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(245, 241, 232, 0.14);
  font-family: var(--hb-font-mono);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.16em;
  color: var(--hb-brass-soft);
}

.hb-footer__list {
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.hb-footer__list a {
  display: inline-block;
  padding-bottom: 3px;
  color: rgba(245, 241, 232, 0.78);
  font-size: 14.5px;
  text-decoration: none;
  background-image: linear-gradient(var(--hb-brass-soft), var(--hb-brass-soft));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0 1px;
  transition: background-size 0.26s var(--hb-ease), color 0.2s var(--hb-ease);
}

.hb-footer__list a:hover,
.hb-footer__list a:focus-visible {
  color: var(--hb-brass-soft);
  background-size: 100% 1px;
}

.hb-footer__contact {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  max-width: var(--hb-shell);
  margin: 0 auto;
  padding: 0 28px clamp(28px, 3.6vw, 40px);
}

.hb-footer__contact-item {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 16px 18px;
  border: 1px solid rgba(245, 241, 232, 0.14);
  border-radius: var(--hb-radius-md);
  background: rgba(245, 241, 232, 0.04);
  transition: border-color 0.24s var(--hb-ease);
}

.hb-footer__contact-item:hover { border-color: rgba(227, 196, 140, 0.5); }

.hb-footer__contact-key {
  margin: 0;
  font-family: var(--hb-font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--hb-brass);
}

.hb-footer__contact-val {
  margin: 0;
  font-size: 14.5px;
  color: rgba(245, 241, 232, 0.86);
  word-break: break-word;
}

.hb-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 24px;
  max-width: var(--hb-shell);
  margin: 0 auto;
  padding: 22px 28px 34px;
  border-top: 1px solid rgba(245, 241, 232, 0.14);
  font-size: 13px;
}

.hb-footer__copy {
  margin: 0;
  font-size: 13px;
  color: rgba(245, 241, 232, 0.62);
}

.hb-footer__icp {
  margin: 0;
  font-family: var(--hb-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(245, 241, 232, 0.66);
}

.hb-footer__note {
  flex: 1 1 320px;
  margin: 0;
  font-size: 13px;
  color: rgba(245, 241, 232, 0.55);
}

.hb-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.hb-footer__legal a {
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  color: rgba(245, 241, 232, 0.66);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.2s var(--hb-ease), border-color 0.2s var(--hb-ease);
}

.hb-footer__legal a:hover,
.hb-footer__legal a:focus-visible {
  color: var(--hb-brass-soft);
  border-bottom-color: var(--hb-brass-soft);
}

/* 9 响应式与无障碍 ------------------------------------------------------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s var(--hb-ease), transform 0.5s var(--hb-ease);
}

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

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

.hb-indexbar :focus-visible { outline-color: var(--hb-brass-soft); }

@media (max-width: 1120px) {
  .hb-masthead__cta {
    position: static;
    display: inline-block;
    margin-top: 16px;
    transform: none;
  }
}

@media (max-width: 960px) {
  .hb-grid--3,
  .hb-grid--7-4,
  .hb-grid--4-7 { grid-template-columns: minmax(0, 1fr); }
  .hb-footer__top { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 900px) {
  .hb-shell { padding: 0 18px; }

  .hb-indexbar__inner {
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    min-height: 0;
    padding: 9px 18px;
  }

  .hb-indexbar__label { display: none; }

  .hb-nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 9px 16px;
    border: 1px solid rgba(227, 196, 140, 0.42);
    border-radius: 999px;
    background: transparent;
    color: var(--hb-cream);
    cursor: pointer;
    transition: border-color 0.22s var(--hb-ease), background-color 0.22s var(--hb-ease);
  }

  .hb-nav-toggle:hover,
  .hb-nav-toggle:focus-visible {
    border-color: var(--hb-brass-soft);
    background: rgba(227, 196, 140, 0.1);
  }

  .hb-nav {
    display: none;
    flex: 1 1 100%;
    order: 3;
    padding: 6px 0 10px;
  }

  .hb-nav[data-open] { display: block; }

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

  .hb-nav__list a {
    padding: 13px 10px;
    border-radius: 0;
    border-bottom: 1px solid rgba(245, 241, 232, 0.12);
    font-size: 16px;
  }

  .hb-nav__list a::after { display: none; }

  .hb-nav__list a[aria-current="page"] {
    background: rgba(227, 196, 140, 0.12);
    border-bottom-color: rgba(227, 196, 140, 0.4);
  }

  .hb-footer__top,
  .hb-footer__contact,
  .hb-footer__bottom {
    padding-left: 18px;
    padding-right: 18px;
  }
}

@media (max-width: 680px) {
  .hb-grid--2 { grid-template-columns: minmax(0, 1fr); }
  .hb-footer__nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .hb-masthead__inner { padding: 20px 18px 18px; }
  .hb-masthead__rule {
    gap: 8px;
    font-size: 10px;
    letter-spacing: 0.12em;
  }
  .hb-masthead__rule::before,
  .hb-masthead__rule::after { flex-basis: 40px; }
  .hb-masthead__tagline { font-size: 13px; letter-spacing: 0.1em; }
  .hb-brand__mark { transform: translateY(-4px); }
}

@media (max-width: 460px) {
  .hb-footer__nav { grid-template-columns: minmax(0, 1fr); }
}

@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;
  }
}