/* ==========================================================================
   HTH 夜场数据台 · 共享样式 /assets/site.css
   ========================================================================== */

:root {
  --ink: #08110F;
  --moss: #0F2C24;
  --turf: #163D32;
  --violet: #25204A;
  --wine: #3A1722;
  --cyan: #4DFFD2;
  --cyan-dim: #1FAF8B;
  --orange: #FF9A4D;
  --bone: #F4F1E8;
  --mist: #B9CBC3;
  --line: #214139;

  --edge: clamp(16px, 4vw, 56px);
  --shell: 1240px;
  --r-lg: 28px;
  --r-md: 18px;
  --r-sm: 12px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  --font-sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-serif: "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", Consolas, "SF Mono", ui-monospace, monospace;
}

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

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

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

ul, ol { list-style: none; }
img, svg, picture { display: block; max-width: 100%; }
a { color: inherit; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, textarea, select { font: inherit; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- 基础排版 ---------- */
body {
  min-height: 100vh;
  background:
    radial-gradient(1100px 560px at 10% -8%, rgba(31, 175, 139, 0.16), transparent 62%),
    radial-gradient(880px 520px at 94% 2%, rgba(37, 32, 74, 0.55), transparent 64%),
    var(--ink);
  color: var(--bone);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.012em;
  color: var(--bone);
}

.hth-mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.hth-container {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--edge);
}

.hth-main {
  display: block;
  padding-block: clamp(24px, 4vw, 52px) 0;
}

.hth-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan-dim);
}

.hth-eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan), rgba(77, 255, 210, 0));
}

.hth-rule {
  height: 1px;
  border: 0;
  margin: 30px 0;
  background: linear-gradient(90deg, var(--line), rgba(33, 65, 57, 0));
}

/* ---------- 按钮 ---------- */
.hth-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  text-align: center;
  transition: transform 0.22s var(--ease), background-color 0.22s var(--ease),
    border-color 0.22s var(--ease), color 0.22s var(--ease);
}

.hth-btn:hover { transform: translateY(-1px); }
.hth-btn:active { transform: translateY(0); }

.hth-btn--sm { padding: 8px 16px; font-size: 13px; }

.hth-btn--primary {
  background: var(--cyan);
  color: #06231C;
}
.hth-btn--primary:hover { background: #74ffdc; }

.hth-btn--ghost {
  background: rgba(77, 255, 210, 0.06);
  border-color: rgba(77, 255, 210, 0.4);
  color: var(--cyan);
}
.hth-btn--ghost:hover { background: rgba(77, 255, 210, 0.15); }

.hth-btn--orange {
  background: var(--orange);
  color: #2A1004;
}
.hth-btn--orange:hover { background: #ffb073; }

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

/* ---------- 胶囊 / 标签 ---------- */
.hth-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1.5;
}

.hth-pill--cyan {
  background: rgba(77, 255, 210, 0.1);
  border-color: rgba(77, 255, 210, 0.35);
  color: var(--cyan);
}

.hth-pill--orange {
  background: var(--orange);
  border-color: var(--orange);
  color: #2A1004;
}

.hth-pill--violet {
  background: rgba(37, 32, 74, 0.85);
  border-color: rgba(140, 128, 255, 0.32);
  color: #CFC9FF;
}

.hth-pill--wine {
  background: rgba(58, 23, 34, 0.92);
  border-color: rgba(255, 154, 77, 0.28);
  color: #F3C7CE;
}

.hth-tag {
  display: inline-block;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(31, 175, 139, 0.42);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--cyan-dim);
}

/* ---------- 面包屑 ---------- */
.hth-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 22px;
  font-size: 12.5px;
  color: var(--mist);
}

.hth-breadcrumb__item { display: inline-flex; align-items: center; gap: 8px; }
.hth-breadcrumb a { color: var(--mist); text-decoration: none; }
.hth-breadcrumb a:hover { color: var(--cyan); }
.hth-breadcrumb__sep { color: rgba(185, 203, 195, 0.42); }
.hth-breadcrumb__item[aria-current="page"] { color: var(--bone); }

/* ---------- 正文排版容器 ---------- */
.hth-prose {
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
}

.hth-prose > * + * { margin-top: 1em; }

.hth-prose h2,
.hth-prose h3 { color: var(--bone); }

.hth-prose h2 {
  margin-top: 1.7em;
  font-size: clamp(22px, 2.4vw, 28px);
}

.hth-prose h3 {
  margin-top: 1.4em;
  font-size: 18px;
}

.hth-prose strong { color: var(--bone); }

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

/* ---------- 网格 ---------- */
.hth-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}

.hth-span-4 { grid-column: span 4; }
.hth-span-6 { grid-column: span 6; }
.hth-span-8 { grid-column: span 8; }
.hth-span-9 { grid-column: span 9; }
.hth-span-12 { grid-column: span 12; }

/* ---------- 章节 ---------- */
.hth-section { padding-block: clamp(30px, 5vw, 62px); }

.hth-section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.hth-section__title {
  font-size: clamp(21px, 2.6vw, 30px);
  font-weight: 800;
}

.hth-section__meta {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

/* ---------- 面板 ---------- */
.hth-panel {
  position: relative;
  padding: clamp(20px, 3vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--moss);
}

.hth-panel--moss { background: var(--moss); }

.hth-panel--violet {
  background: var(--violet);
  border-color: rgba(140, 128, 255, 0.24);
}

.hth-panel--wine {
  background: var(--wine);
  border-color: rgba(255, 154, 77, 0.22);
}

.hth-panel--slant {
  border-radius: 0 var(--r-lg) 0 var(--r-lg);
  padding-bottom: calc(clamp(20px, 3vw, 32px) + 16px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 28px) 100%, 0 100%);
}

/* ---------- 图片容器基础规则 ---------- */
.hth-figure { margin: 0; }

.hth-figure__media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background:
    repeating-linear-gradient(90deg, rgba(77, 255, 210, 0.06) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(0deg, rgba(77, 255, 210, 0.05) 0 1px, transparent 1px 64px),
    radial-gradient(120% 90% at 50% 118%, rgba(31, 175, 139, 0.38), transparent 62%),
    var(--turf);
}

.hth-figure__media > img,
.hth-figure__media > picture,
.hth-figure__media > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.86) brightness(0.78) contrast(1.06);
}

.hth-figure__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 17, 15, 0) 52%, rgba(8, 17, 15, 0.74));
  pointer-events: none;
}

.hth-figure__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--mist);
}

.hth-figure--wide .hth-figure__media { aspect-ratio: 21 / 9; }

/* ---------- 索引列表 ---------- */
.hth-index-list { display: grid; }

.hth-index-list__item {
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.hth-index-list__item:last-child { border-bottom: 1px solid var(--line); }

.hth-index-list__title {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--bone);
  text-decoration: none;
}

a.hth-index-list__title:hover { color: var(--cyan); }

.hth-index-list__meta {
  display: block;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--mist);
}

/* ---------- 页内目录 / 章节高亮 ---------- */
.hth-toc { display: block; }

.hth-toc__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-left: 14px;
  border-left: 1px solid var(--line);
}

.hth-toc__link {
  display: block;
  padding: 6px 10px;
  border-radius: 10px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--mist);
  text-decoration: none;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease);
}

.hth-toc__link:hover {
  background: rgba(77, 255, 210, 0.07);
  color: var(--bone);
}

.hth-toc__link[aria-current] {
  background: rgba(77, 255, 210, 0.1);
  color: var(--cyan);
  box-shadow: inset 2px 0 0 var(--cyan);
}

/* ==========================================================================
   头部
   ========================================================================== */
.hth-skip {
  position: absolute;
  top: -120px;
  left: 16px;
  z-index: 200;
  padding: 10px 20px;
  border-radius: 0 0 14px 14px;
  background: var(--cyan);
  color: #06231C;
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  transition: top 0.22s var(--ease);
}

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

.hth-header {
  position: sticky;
  top: 0;
  z-index: 120;
  background: rgba(8, 17, 15, 0.9);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: background-color 0.24s var(--ease), box-shadow 0.24s var(--ease);
}

.hth-header[data-scrolled] {
  background: rgba(8, 17, 15, 0.98);
  box-shadow: 0 24px 52px -36px #000000;
}

.hth-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 3px;
  overflow: hidden;
  background: rgba(33, 65, 57, 0.6);
  pointer-events: none;
}

.hth-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan-dim), var(--cyan));
  transform: scaleX(0);
  transform-origin: left center;
}

.hth-header__inner {
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--edge);
}

.hth-masthead {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 0 12px;
}

.hth-masthead::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(77, 255, 210, 0.5), rgba(77, 255, 210, 0.06) 42%, rgba(77, 255, 210, 0) 72%);
}

.hth-brand {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
  text-decoration: none;
  line-height: 1.15;
}

.hth-brand__mark {
  display: inline-flex;
  align-items: baseline;
  font-family: var(--font-serif);
  font-size: clamp(19px, 2.3vw, 26px);
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--bone);
}

.hth-brand__dot {
  align-self: center;
  width: 9px;
  height: 9px;
  margin-left: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(77, 255, 210, 0.14);
}

.hth-brand__note {
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.hth-masthead__aside {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: 10px;
}

.hth-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(22, 61, 50, 0.55);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--mist);
  white-space: nowrap;
}

.hth-status__lamp {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
  animation: hth-breath 2.2s var(--ease) infinite;
}

@keyframes hth-breath {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.34; }
}

.hth-nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid rgba(77, 255, 210, 0.42);
  border-radius: 999px;
  background: rgba(77, 255, 210, 0.08);
  color: var(--cyan);
  font-size: 13px;
  font-weight: 600;
}

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

.hth-nav-toggle__bars::before,
.hth-nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.22s var(--ease), top 0.22s var(--ease);
}

.hth-nav-toggle__bars::before { top: 0; }
.hth-nav-toggle__bars::after { top: 8px; }

.hth-header[data-open] .hth-nav-toggle__bars::before {
  top: 4px;
  transform: rotate(45deg);
}

.hth-header[data-open] .hth-nav-toggle__bars::after {
  top: 4px;
  transform: rotate(-45deg);
}

.hth-nav-toggle__label { letter-spacing: 0.06em; }

.hth-nav-wrap { display: block; }
.hth-nav { display: block; }

.hth-nav__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 0 12px;
}

.hth-nav__item { display: block; }

.hth-nav__link {
  display: block;
  padding: 8px 16px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--mist);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease),
    border-color 0.2s var(--ease);
}

.hth-nav__link:hover {
  background: rgba(77, 255, 210, 0.08);
  border-color: rgba(77, 255, 210, 0.25);
  color: var(--bone);
}

.hth-nav__link--pinned {
  background: rgba(77, 255, 210, 0.1);
  border-color: rgba(77, 255, 210, 0.42);
  color: var(--cyan);
  font-weight: 600;
}

.hth-nav__link[aria-current="page"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #06231C;
  font-weight: 700;
}

/* ==========================================================================
   页脚
   ========================================================================== */
.hth-footer {
  position: relative;
  margin-top: clamp(40px, 7vw, 96px);
  background: linear-gradient(180deg, #0B1917 0%, var(--ink) 46%, var(--ink) 100%);
  border-top: 1px solid var(--line);
}

.hth-footer__beam {
  height: 10px;
  background: linear-gradient(90deg, rgba(77, 255, 210, 0.7), rgba(31, 175, 139, 0.24) 38%, rgba(255, 154, 77, 0.55) 76%, rgba(58, 23, 34, 0) 100%);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 26%);
  opacity: 0.85;
}

.hth-footer__inner {
  max-width: var(--shell);
  margin-inline: auto;
  padding: clamp(32px, 5vw, 52px) var(--edge) 26px;
}

.hth-footer__top {
  display: grid;
  grid-template-columns: 1.05fr 1.35fr 1fr;
  gap: clamp(22px, 3vw, 40px);
  align-items: start;
}

.hth-footer__brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}

.hth-footer__logo {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--bone);
}

.hth-footer__logo span {
  font-family: var(--font-sans);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.hth-footer__tagline {
  max-width: 30ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.hth-footer__cols {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

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

.hth-footer__heading {
  margin-bottom: 14px;
  padding-left: 10px;
  border-left: 3px solid rgba(77, 255, 210, 0.6);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.hth-footer__heading--warm {
  border-left-color: var(--orange);
  color: #FFC096;
}

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

.hth-footer__link {
  display: inline-block;
  padding: 5px 0;
  font-size: 14px;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.2s var(--ease), transform 0.2s var(--ease);
}

.hth-footer__link:hover {
  color: var(--bone);
  transform: translateX(3px);
}

.hth-footer__contact {
  padding: 18px 18px 16px;
  border: 1px solid rgba(255, 154, 77, 0.22);
  border-radius: var(--r-md);
  background: rgba(58, 23, 34, 0.86);
}

.hth-contact__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2px 10px;
  align-items: center;
  padding: 9px 0;
  border-bottom: 1px dashed rgba(255, 154, 77, 0.16);
}

.hth-contact__label {
  grid-column: 1 / -1;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: rgba(255, 193, 150, 0.86);
}

.hth-contact__value {
  min-width: 0;
  font-size: 14px;
  color: var(--bone);
  overflow-wrap: anywhere;
}

.hth-contact__row--wide .hth-contact__value {
  grid-column: 1 / -1;
  font-family: var(--font-sans);
  font-size: 13.5px;
}

.hth-contact__note {
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(243, 199, 206, 0.82);
}

.hth-copy {
  align-self: center;
  padding: 4px 10px;
  border: 1px solid rgba(77, 255, 210, 0.35);
  border-radius: 999px;
  color: var(--cyan);
  font-size: 11.5px;
  line-height: 1.4;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease);
}

.hth-copy:hover { background: rgba(77, 255, 210, 0.15); }

.hth-copy[data-copied] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #06231C;
}

.hth-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 24px;
  margin-top: clamp(26px, 4vw, 40px);
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.hth-footer__legal {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--mist);
}

.hth-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hth-legal-links a {
  font-size: 12.5px;
  color: var(--mist);
  text-decoration: none;
}

.hth-legal-links a:hover { color: var(--bone); }

.hth-top-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border: 1px solid rgba(77, 255, 210, 0.34);
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--cyan);
  text-decoration: none;
  transition: background-color 0.2s var(--ease);
}

.hth-top-link:hover { background: rgba(77, 255, 210, 0.12); }

.hth-top-link::before {
  content: "↑";
  font-family: var(--font-mono);
  font-size: 12px;
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1100px) {
  .hth-status { display: none; }

  .hth-nav__link {
    padding: 8px 12px;
    font-size: 13.5px;
  }

  .hth-footer__top { grid-template-columns: 1fr 1fr; }
  .hth-footer__contact { grid-column: 1 / -1; }
}

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

  .hth-nav-wrap {
    display: none;
    border-top: 1px solid var(--line);
  }

  .hth-header[data-open] .hth-nav-wrap { display: block; }

  .hth-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 12px 0 18px;
  }

  .hth-nav__item { width: 100%; }

  .hth-nav__link {
    padding: 12px 16px;
    border-radius: 16px;
    font-size: 15px;
    white-space: normal;
  }

  .hth-nav__link--pinned { order: -1; }

  .hth-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }

  .hth-span-4,
  .hth-span-6,
  .hth-span-8,
  .hth-span-9 { grid-column: span 4; }

  .hth-section__head { align-items: flex-start; }

  .hth-footer__cols { gap: 18px; }
}

@media (max-width: 700px) {
  .hth-masthead {
    flex-wrap: wrap;
    row-gap: 12px;
    padding-bottom: 14px;
  }

  .hth-masthead__aside {
    width: 100%;
    justify-content: space-between;
  }

  .hth-brand__mark { letter-spacing: 0.12em; }
  .hth-brand__note { font-size: 11px; letter-spacing: 0.04em; }

  .hth-footer__top { grid-template-columns: 1fr; }
  .hth-footer__contact { grid-column: auto; }
  .hth-footer__tagline { max-width: 36ch; }

  .hth-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .hth-legal-links { gap: 12px; }
}

@media (max-width: 420px) {
  .hth-footer__cols { grid-template-columns: 1fr; }
  .hth-contact__value { font-size: 13px; }
}

/* ==========================================================================
   动效降级
   ========================================================================== */
@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;
  }

  .hth-status__lamp { animation: none; opacity: 1; }
  .hth-btn:hover { transform: none; }
  .hth-footer__link:hover { transform: none; }
}