/* =========================================================
   浩瀚体育 · 共享样式表 /assets/site.css
   夜空深蓝基底 + 经幡五色数据高亮 + 堆叠画板结构
   ========================================================= */

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 9rem; }

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

ul, ol { list-style: none; }

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

button, input, select, textarea { font: inherit; color: inherit; }

a { color: inherit; text-decoration: none; }

table { border-collapse: collapse; border-spacing: 0; }

/* ---------- 2. Design tokens ---------- */
:root {
  --hh-night: #0B1B3A;
  --hh-midnight: #071126;
  --hh-snow: #F4F7FB;
  --hh-blue: #2E7DD1;
  --hh-red: #D6423A;
  --hh-green: #2F9E6E;
  --hh-yellow: #E6B23A;
  --hh-silver: #A7B4C9;
  --hh-orange: #FF7A3D;
  --hh-glass: rgba(244, 247, 251, 0.08);

  --hh-line: rgba(167, 180, 201, 0.22);
  --hh-line-strong: rgba(167, 180, 201, 0.42);

  --hh-ink: var(--hh-snow);
  --hh-ink-dim: rgba(244, 247, 251, 0.7);
  --hh-ink-mute: rgba(244, 247, 251, 0.48);

  --hh-font: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --hh-display: "Noto Sans SC", "Source Han Sans SC", Impact, "PingFang SC", sans-serif;
  --hh-mono: "JetBrains Mono", "SF Mono", "Roboto Mono", ui-monospace, monospace;

  --hh-gutter: clamp(1rem, 4vw, 3rem);
  --hh-wide: 1320px;
  --hh-narrow: 880px;
  --hh-radius: 6px;

  --hh-ease: cubic-bezier(0.22, 0.68, 0, 1);
  --hh-shadow: 0 30px 70px -50px rgba(0, 0, 0, 0.95);
}

/* ---------- 3. Base typography ---------- */
body {
  font-family: var(--hh-font);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--hh-ink);
  background-color: var(--hh-night);
  background-image:
    radial-gradient(circle at 10% -14%, rgba(46, 125, 209, 0.30), transparent 46%),
    radial-gradient(circle at 92% 2%, rgba(214, 66, 58, 0.14), transparent 40%),
    radial-gradient(circle at 46% 126%, rgba(47, 158, 110, 0.16), transparent 52%);
  background-attachment: fixed;
  background-repeat: no-repeat;
  min-height: 100vh;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--hh-display);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--hh-snow);
  text-wrap: balance;
}

h1 { font-size: clamp(2.2rem, 5vw, 4rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.6rem); }
h3 { font-size: clamp(1.15rem, 1.8vw, 1.5rem); }
h4 { font-size: 1.0625rem; }

p { text-wrap: pretty; }

::selection { background: var(--hh-blue); color: #fff; }

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

/* ---------- 4. Shell ---------- */
.hh-shell {
  width: min(100% - (var(--hh-gutter) * 2), var(--hh-wide));
  margin-inline: auto;
}

.hh-shell--narrow {
  width: min(100% - (var(--hh-gutter) * 2), var(--hh-narrow));
  margin-inline: auto;
}

.hh-main { display: block; padding-bottom: clamp(2rem, 6vw, 4rem); }

.hh-sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 5. Skip link ---------- */
.hh-skip {
  position: fixed;
  top: 0.5rem;
  left: 0.5rem;
  z-index: 200;
  transform: translateY(-160%);
  padding: 0.7rem 1.1rem;
  border-radius: 999px;
  background: var(--hh-orange);
  color: #100804;
  font-size: 0.875rem;
  font-weight: 700;
  transition: transform 0.25s var(--hh-ease);
}

.hh-skip:focus { transform: translateY(0); }

/* ---------- 6. Header ---------- */
.hh-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(7, 17, 38, 0.86);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid var(--hh-line);
  color: var(--hh-snow);
}

.hh-header__inner { position: relative; }

.hh-header__top {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 2.5rem);
  padding-block: 0.85rem;
}

.hh-header__intro {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--hh-ink-mute);
  max-width: 46ch;
}

.hh-header__actions { flex: 0 0 auto; display: flex; align-items: center; gap: 0.5rem; }

/* 品牌 */
.hh-brand {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  min-width: 0;
}

.hh-brand__mark,
.hh-footer__mark {
  display: grid;
  grid-template-columns: repeat(5, 4px);
  gap: 3px;
  height: 28px;
  align-items: stretch;
}

.hh-brand__mark i,
.hh-footer__mark i { display: block; border-radius: 1px; }

.hh-brand__mark i:nth-child(1), .hh-footer__mark i:nth-child(1) { background: var(--hh-blue); }
.hh-brand__mark i:nth-child(2), .hh-footer__mark i:nth-child(2) { background: var(--hh-snow); }
.hh-brand__mark i:nth-child(3), .hh-footer__mark i:nth-child(3) { background: var(--hh-red); }
.hh-brand__mark i:nth-child(4), .hh-footer__mark i:nth-child(4) { background: var(--hh-green); }
.hh-brand__mark i:nth-child(5), .hh-footer__mark i:nth-child(5) { background: var(--hh-yellow); }

.hh-brand__text { display: flex; flex-direction: column; line-height: 1.2; min-width: 0; }

.hh-brand__line {
  font-weight: 800;
  font-size: 1.0625rem;
  letter-spacing: 0.12em;
  color: var(--hh-snow);
}

.hh-brand__sub {
  font-family: var(--hh-mono);
  font-size: 0.625rem;
  letter-spacing: 0.2em;
  color: var(--hh-silver);
  text-transform: uppercase;
  white-space: nowrap;
}

/* 下层信息条 */
.hh-header__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--hh-line);
}

.hh-nav { display: block; min-width: 0; }

.hh-nav__list { display: flex; flex-wrap: wrap; align-items: center; gap: 0.1rem; }

.hh-nav__item { display: block; }

.hh-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  padding: 0.75rem 0.85rem;
  border-radius: 4px 4px 0 0;
  color: var(--hh-ink-dim);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: color 0.22s var(--hh-ease), background-color 0.22s var(--hh-ease);
}

.hh-nav__link::after {
  content: "";
  position: absolute;
  left: 0.85rem;
  right: 0.85rem;
  bottom: 0.3rem;
  height: 2px;
  background: var(--hh-orange);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s var(--hh-ease), background-color 0.3s var(--hh-ease);
}

.hh-nav__link:hover { color: var(--hh-snow); background-color: var(--hh-glass); }
.hh-nav__link:hover::after { transform: scaleX(1); }

.hh-nav__link[aria-current="page"] { color: var(--hh-snow); background-color: var(--hh-glass); }
.hh-nav__link[aria-current="page"]::after { transform: scaleX(1); background: var(--hh-blue); }

.hh-nav__index {
  font-family: var(--hh-mono);
  font-size: 0.625rem;
  letter-spacing: 0.08em;
  color: var(--hh-silver);
  transition: color 0.22s var(--hh-ease);
}

.hh-nav__link:hover .hh-nav__index,
.hh-nav__link[aria-current="page"] .hh-nav__index { color: var(--hh-orange); }

.hh-nav__label { display: inline-block; }

.hh-nav__foot { display: none; }

.hh-header__meta { flex: 0 0 auto; display: flex; align-items: center; }

.hh-status {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.7rem;
  border: 1px solid rgba(47, 158, 110, 0.45);
  border-radius: 999px;
  background: rgba(47, 158, 110, 0.12);
  color: #9fe0c3;
  font-family: var(--hh-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.hh-status__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--hh-green);
  box-shadow: 0 0 0 3px rgba(47, 158, 110, 0.2);
}

/* 移动导航按钮 */
.hh-nav-toggle {
  display: none;
  align-items: center;
  gap: 0.6rem;
  margin-left: auto;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--hh-line-strong);
  border-radius: 999px;
  background: var(--hh-glass);
  color: var(--hh-snow);
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.22s var(--hh-ease), border-color 0.22s var(--hh-ease);
}

.hh-nav-toggle:hover { background: rgba(244, 247, 251, 0.14); border-color: var(--hh-silver); }

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

.hh-nav-toggle__bars i {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--hh-snow);
  transition: transform 0.25s var(--hh-ease), opacity 0.25s var(--hh-ease);
}

.hh-nav-toggle[aria-expanded="true"] { border-color: var(--hh-orange); color: var(--hh-orange); }
.hh-nav-toggle[aria-expanded="true"] .hh-nav-toggle__bars i { background: var(--hh-orange); }
.hh-nav-toggle[aria-expanded="true"] .hh-nav-toggle__bars i:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.hh-nav-toggle[aria-expanded="true"] .hh-nav-toggle__bars i:nth-child(2) { opacity: 0; }
.hh-nav-toggle[aria-expanded="true"] .hh-nav-toggle__bars i:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* 滚动进度 */
.hh-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  pointer-events: none;
}

.hh-progress__bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--hh-blue), var(--hh-orange), var(--hh-yellow));
}

/* ---------- 7. Buttons ---------- */
.hh-btn {
  --hh-btn-bg: var(--hh-glass);
  --hh-btn-fg: var(--hh-snow);
  --hh-btn-line: var(--hh-line-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.2rem;
  border: 1px solid var(--hh-btn-line);
  border-radius: 999px;
  background: var(--hh-btn-bg);
  color: var(--hh-btn-fg);
  font-size: 0.875rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background-color 0.25s var(--hh-ease), border-color 0.25s var(--hh-ease),
    color 0.25s var(--hh-ease), transform 0.25s var(--hh-ease);
}

.hh-btn:hover { transform: translateY(-1px); border-color: var(--hh-silver); }

.hh-btn--primary {
  --hh-btn-bg: var(--hh-blue);
  --hh-btn-fg: #FFFFFF;
  --hh-btn-line: transparent;
  box-shadow: 0 14px 34px -18px rgba(46, 125, 209, 0.95);
}

.hh-btn--primary:hover { --hh-btn-bg: #3F8DE0; border-color: transparent; }

.hh-btn--ghost { --hh-btn-bg: transparent; --hh-btn-line: var(--hh-line-strong); }
.hh-btn--ghost:hover { --hh-btn-bg: var(--hh-glass); }

.hh-btn--accent {
  --hh-btn-bg: var(--hh-orange);
  --hh-btn-fg: #180A03;
  --hh-btn-line: transparent;
}

.hh-btn--sm { padding: 0.55rem 0.95rem; font-size: 0.8125rem; }
.hh-btn--block { width: 100%; }

/* ---------- 8. Footer ---------- */
.hh-footer {
  position: relative;
  margin-top: clamp(3rem, 8vw, 6rem);
  background: var(--hh-midnight);
  border-top: 1px solid var(--hh-line);
  color: var(--hh-ink-dim);
  overflow: hidden;
}

.hh-footer__glow {
  position: absolute;
  left: -10%;
  right: -10%;
  bottom: -70%;
  height: 360px;
  background: radial-gradient(50% 60% at 50% 100%, rgba(46, 125, 209, 0.30), transparent 72%);
  pointer-events: none;
}

.hh-footer__inner {
  position: relative;
  z-index: 1;
  padding-block: clamp(2.5rem, 6vw, 4.5rem) 1.5rem;
}

.hh-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.9fr);
  gap: clamp(2rem, 5vw, 4rem);
  padding-bottom: clamp(1.75rem, 4vw, 2.75rem);
  border-bottom: 1px solid var(--hh-line);
}

.hh-footer__brand { display: grid; gap: 0.85rem; align-content: start; }

.hh-footer__name {
  font-family: var(--hh-display);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: 0.1em;
  color: var(--hh-snow);
}

.hh-footer__desc {
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--hh-ink-mute);
  max-width: 34ch;
}

.hh-footer__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(1.25rem, 3vw, 2rem);
}

.hh-footer__col { display: grid; gap: 0.85rem; align-content: start; }

.hh-footer__coltitle {
  font-family: var(--hh-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--hh-silver);
}

.hh-footer__links { display: grid; gap: 0.5rem; }

.hh-footer__link {
  position: relative;
  display: inline-block;
  font-size: 0.9375rem;
  color: var(--hh-ink-dim);
  transition: color 0.22s var(--hh-ease), transform 0.22s var(--hh-ease);
}

.hh-footer__link::before {
  content: "";
  position: absolute;
  left: -0.85rem;
  top: 0.75em;
  width: 0.4rem;
  height: 1px;
  background: var(--hh-orange);
  opacity: 0;
  transition: opacity 0.22s var(--hh-ease);
}

.hh-footer__link:hover { color: var(--hh-snow); transform: translateX(0.2rem); }
.hh-footer__link:hover::before { opacity: 1; }

.hh-footer__contact {
  display: grid;
  gap: 0.9rem;
  padding-block: clamp(1.5rem, 3.5vw, 2.25rem);
  border-bottom: 1px solid var(--hh-line);
}

.hh-contact-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem clamp(1rem, 3vw, 2rem);
}

.hh-contact-list__item {
  display: grid;
  gap: 0.3rem;
  padding-left: 0.9rem;
  border-left: 1px solid var(--hh-line);
}

.hh-contact-list__key {
  font-family: var(--hh-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--hh-silver);
}

.hh-contact-list__val {
  font-size: 0.9375rem;
  color: var(--hh-snow);
  word-break: break-word;
}

.hh-footer__note {
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--hh-ink-mute);
  max-width: 78ch;
}

.hh-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding-top: 1.5rem;
}

.hh-footer__copy {
  font-size: 0.8125rem;
  color: var(--hh-ink-mute);
}

.hh-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem;
}

.hh-footer__icp {
  font-family: var(--hh-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--hh-silver);
}

/* ---------- 9. Page building blocks ---------- */
.hh-section {
  position: relative;
  padding-block: clamp(2.5rem, 6vw, 5rem);
}

.hh-section__head {
  display: grid;
  gap: 0.6rem;
  margin-bottom: clamp(1.25rem, 3vw, 2.25rem);
  max-width: 62ch;
}

.hh-kicker {
  font-family: var(--hh-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--hh-silver);
}

.hh-lead {
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  line-height: 1.8;
  color: var(--hh-ink-dim);
  max-width: 68ch;
}

.hh-hint {
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--hh-ink-mute);
}

.hh-grid { display: grid; gap: clamp(1rem, 2.5vw, 1.75rem); }
.hh-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.hh-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.hh-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.hh-grid--asym { grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); }

.hh-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--hh-line);
  border-radius: var(--hh-radius);
  background-color: rgba(7, 17, 38, 0.55);
  background-image: linear-gradient(180deg, rgba(244, 247, 251, 0.07), rgba(244, 247, 251, 0.015));
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.hh-panel::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--hh-blue), rgba(46, 125, 209, 0) 72%);
}

.hh-panel--solid {
  background-image: none;
  background-color: rgba(7, 17, 38, 0.92);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.hh-panel--snow {
  background-image: none;
  background-color: var(--hh-snow);
  border-color: transparent;
  color: var(--hh-midnight);
}

.hh-panel--snow::before { background: linear-gradient(180deg, var(--hh-orange), rgba(255, 122, 61, 0) 72%); }

.hh-panel--raised { box-shadow: var(--hh-shadow); }

.hh-panel__index {
  display: inline-block;
  margin-bottom: 0.6rem;
  font-family: var(--hh-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  color: var(--hh-orange);
}

.hh-panel__title {
  font-family: var(--hh-display);
  font-weight: 800;
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--hh-snow);
  margin-bottom: 0.65rem;
}

.hh-panel--snow .hh-panel__title { color: var(--hh-midnight); }

.hh-panel__body {
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--hh-ink-dim);
}

.hh-panel--snow .hh-panel__body { color: rgba(7, 17, 38, 0.78); }

/* 标签 */
.hh-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.28rem 0.6rem;
  border: 1px solid var(--hh-line-strong);
  border-radius: 3px;
  background: var(--hh-glass);
  color: var(--hh-silver);
  font-family: var(--hh-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
}

.hh-tag--blue { color: #A6CFF7; border-color: rgba(46, 125, 209, 0.55); background: rgba(46, 125, 209, 0.16); }
.hh-tag--red { color: #F3ABA6; border-color: rgba(214, 66, 58, 0.55); background: rgba(214, 66, 58, 0.16); }
.hh-tag--green { color: #9FE0C3; border-color: rgba(47, 158, 110, 0.55); background: rgba(47, 158, 110, 0.16); }
.hh-tag--yellow { color: #F0D18C; border-color: rgba(230, 178, 58, 0.55); background: rgba(230, 178, 58, 0.16); }
.hh-tag--orange { color: #FFBE9B; border-color: rgba(255, 122, 61, 0.55); background: rgba(255, 122, 61, 0.16); }
.hh-tag--snow { color: var(--hh-snow); border-color: var(--hh-line-strong); background: var(--hh-glass); }

/* 数据 */
.hh-data {
  font-family: var(--hh-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
  color: var(--hh-snow);
}

.hh-data--xl {
  display: block;
  font-size: clamp(2rem, 6vw, 3.5rem);
  line-height: 1;
  letter-spacing: -0.03em;
}

/* 数据条 */
.hh-databar {
  position: relative;
  height: 6px;
  border-radius: 999px;
  background: rgba(167, 180, 201, 0.16);
  overflow: hidden;
}

.hh-databar__fill {
  display: block;
  height: 100%;
  width: var(--hh-value, 50%);
  border-radius: inherit;
  background: linear-gradient(90deg, var(--hh-blue), var(--hh-orange));
  transition: width 0.9s var(--hh-ease);
}

/* 图片容器（供页面阶段放占位图） */
.hh-media {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--hh-line);
  border-radius: var(--hh-radius);
  background-image: linear-gradient(155deg, rgba(46, 125, 209, 0.28), rgba(7, 17, 38, 0.94) 58%, rgba(214, 66, 58, 0.18));
  background-color: var(--hh-midnight);
}

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

.hh-media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hh-media__caption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 1.6rem 1rem 0.85rem;
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--hh-ink-dim);
  background: linear-gradient(180deg, rgba(7, 17, 38, 0), rgba(7, 17, 38, 0.92));
}

.hh-media__tag { position: absolute; top: 0.75rem; left: 0.75rem; z-index: 2; }

/* 列表 / 键值 / 折叠 / 表格 */
.hh-list { display: grid; gap: 0.65rem; }

.hh-list__item {
  position: relative;
  padding-left: 1.15rem;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--hh-ink-dim);
}

.hh-list__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 0.45rem;
  height: 1px;
  background: var(--hh-blue);
}

.hh-kv { display: grid; gap: 0.15rem; }

.hh-kv__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.55rem;
  border-bottom: 1px dashed var(--hh-line);
}

.hh-kv__k { font-size: 0.8125rem; color: var(--hh-silver); }
.hh-kv__v { font-size: 0.9375rem; color: var(--hh-snow); text-align: right; }

.hh-fold {
  border: 1px solid var(--hh-line);
  border-radius: var(--hh-radius);
  background: rgba(7, 17, 38, 0.5);
  overflow: hidden;
}

.hh-fold + .hh-fold { margin-top: 0.6rem; }

.hh-fold__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  cursor: pointer;
  color: var(--hh-snow);
  font-size: 0.9375rem;
  font-weight: 600;
  list-style: none;
}

.hh-fold__summary::-webkit-details-marker { display: none; }

.hh-fold__summary::after {
  content: "+";
  font-family: var(--hh-mono);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--hh-orange);
}

.hh-fold[open] .hh-fold__summary::after { content: "\2013"; }

.hh-fold__body {
  padding: 0 1.25rem 1.25rem;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--hh-ink-dim);
}

.hh-table__wrap {
  overflow-x: auto;
  border: 1px solid var(--hh-line);
  border-radius: var(--hh-radius);
}

.hh-table { width: 100%; font-size: 0.875rem; }

.hh-table th,
.hh-table td {
  padding: 0.7rem 0.85rem;
  text-align: left;
  border-bottom: 1px solid var(--hh-line);
  white-space: nowrap;
}

.hh-table th {
  font-family: var(--hh-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--hh-silver);
}

.hh-table td { color: var(--hh-ink-dim); }
.hh-table tbody tr:last-child td { border-bottom: 0; }
.hh-table tbody tr:hover { background: var(--hh-glass); }

/* 时间轴 / 装饰 */
.hh-trail { position: relative; padding-left: 2rem; }

.hh-trail::before {
  content: "";
  position: absolute;
  left: 0.55rem;
  top: 0.4rem;
  bottom: 0.4rem;
  width: 1px;
  background: linear-gradient(180deg, var(--hh-blue), rgba(167, 180, 201, 0.12));
}

.hh-trail__dot {
  position: absolute;
  left: 0;
  top: 0.45rem;
  width: 0.75rem;
  height: 0.75rem;
  border: 1px solid var(--hh-blue);
  border-radius: 50%;
  background: var(--hh-night);
}

.hh-divider {
  height: 1px;
  border: 0;
  margin-block: clamp(2rem, 5vw, 3.5rem);
  background: linear-gradient(90deg, transparent, var(--hh-line-strong), transparent);
}

/* 面包屑 */
.hh-breadcrumb { padding-block: 1.25rem; }

.hh-breadcrumb__list { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; }

.hh-breadcrumb__item { display: inline-flex; align-items: center; gap: 0.5rem; }

.hh-breadcrumb__link {
  font-family: var(--hh-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--hh-silver);
  transition: color 0.22s var(--hh-ease);
}

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

.hh-breadcrumb__link[aria-current="page"] { color: var(--hh-snow); }

.hh-breadcrumb__sep { color: rgba(167, 180, 201, 0.45); font-size: 0.75rem; }

/* 返回顶部 */
.hh-totop {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: 70;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.6rem 0.95rem;
  border: 1px solid var(--hh-line-strong);
  border-radius: 999px;
  background: rgba(7, 17, 38, 0.88);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  color: var(--hh-snow);
  font-family: var(--hh-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  cursor: pointer;
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity 0.3s var(--hh-ease), transform 0.3s var(--hh-ease), border-color 0.3s var(--hh-ease);
}

.hh-totop[data-show] { opacity: 1; transform: translateY(0); pointer-events: auto; }
.hh-totop:hover { border-color: var(--hh-orange); }

/* ---------- 10. Reveal ---------- */
html.hh-js [data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s var(--hh-ease), transform 0.7s var(--hh-ease);
  will-change: opacity, transform;
}

html.hh-js [data-reveal].hh-in { opacity: 1; transform: none; }

/* ---------- 11. Responsive ---------- */
@media (max-width: 1100px) {
  .hh-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hh-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  html { scroll-padding-top: 7rem; }

  .hh-header__intro,
  .hh-header__actions { display: none; }

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

  .hh-header__bottom {
    display: block;
    border-top: 1px solid transparent;
    padding-bottom: 0;
  }

  .hh-header__meta { display: none; }

  .hh-nav {
    display: none;
    padding-bottom: 0.9rem;
    border-top: 1px solid var(--hh-line);
  }

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

  .hh-nav__list { flex-direction: column; align-items: stretch; gap: 0; padding-top: 0.5rem; }

  .hh-nav__item { border-bottom: 1px dashed var(--hh-line); }
  .hh-nav__item:last-child { border-bottom: 0; }

  .hh-nav__link {
    width: 100%;
    padding: 0.9rem 0.25rem;
    border-radius: 4px;
    font-size: 1rem;
  }

  .hh-nav__link::after { left: 0.25rem; right: auto; width: 2.5rem; bottom: 0.55rem; }

  .hh-nav__foot { display: block; padding: 0.9rem 0.25rem 0.2rem; }

  .hh-footer__top { grid-template-columns: minmax(0, 1fr); }
  .hh-contact-list { grid-template-columns: minmax(0, 1fr); }
  .hh-contact-list__item { padding-left: 0.75rem; }
}

@media (max-width: 760px) {
  body { background-attachment: scroll; }

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

  .hh-footer__grid { grid-template-columns: minmax(0, 1fr); gap: 1.5rem; }
  .hh-footer__bottom { flex-direction: column; align-items: flex-start; }
  .hh-footer__legal { gap: 1rem; }
  .hh-brand__sub { white-space: normal; }
}

/* ---------- 12. 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;
    scroll-behavior: auto !important;
  }

  html.hh-js [data-reveal] { opacity: 1; transform: none; }
  .hh-btn:hover,
  .hh-footer__link:hover { transform: none; }
}