/* ==========================================================================
   博鱼服务 · 共享样式表 /assets/site.css
   坐标轴式非对称布局 · 深水蓝 × 青瓷绿 × 珊瑚橙
   ========================================================================== */

/* 1 重置
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, figure, blockquote, dl, dd, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; }

/* 2 变量
   -------------------------------------------------------------------------- */
:root {
  --ink: #061421;
  --deep: #0B2A4A;
  --paper: #F4EFE2;
  --card: #FFFDF7;
  --celadon: #5E9C8B;
  --coral: #F26445;
  --data: #6CC4D6;
  --amber: #E8B04B;
  --amber-ink: #A9761A;
  --mist: #D8E5E1;
  --slate: #5E6D74;

  --shell: 1240px;
  --gutter: clamp(18px, 4vw, 48px);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;

  --h1: clamp(2.75rem, 7.2vw, 5.5rem);
  --h2: clamp(1.75rem, 3.6vw, 2.9rem);
  --h3: clamp(1.2rem, 1.7vw, 1.7rem);
  --step-1: clamp(1.05rem, 1.4vw, 1.2rem);
  --lift: 0 18px 42px -30px rgba(6, 20, 33, .62);
}

/* 3 中文排版与页面底纹
   -------------------------------------------------------------------------- */
body {
  background-color: var(--paper);
  background-image:
    linear-gradient(to right, rgba(11, 42, 74, .05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(11, 42, 74, .05) 1px, transparent 1px);
  background-size: 64px 64px;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 {
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: -.012em;
  text-wrap: balance;
  color: var(--ink);
}
h1 { font-size: var(--h1); }
h2 { font-size: var(--h2); }
h3 { font-size: var(--h3); }
:focus-visible { outline: 3px solid var(--coral); outline-offset: 3px; }

/* 4 通用容器与工具
   -------------------------------------------------------------------------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.cut {
  --cut: 16px;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}
.skip-link {
  position: fixed;
  left: 12px;
  top: -70px;
  z-index: 300;
  padding: 10px 18px;
  background: var(--coral);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  text-decoration: none;
  transition: top .2s ease;
}
.skip-link:focus { top: 12px; }
.progress-rail {
  position: fixed;
  inset: 0 0 auto 0;
  height: 3px;
  z-index: 200;
  pointer-events: none;
  background: rgba(6, 20, 33, .12);
}
.progress-rail__bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--data), var(--celadon) 52%, var(--coral));
  transition: width .12s linear;
}

/* 5 页头
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  border-bottom: 1px solid rgba(94, 156, 139, .35);
}
.header-utility {
  background: var(--ink);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
}
.header-utility__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 6px 24px;
  min-height: 42px;
  padding-block: 7px;
}
.header-utility__coord {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  color: rgba(216, 229, 225, .82);
}
.header-utility__code { color: var(--data); }
.header-utility__hours { color: rgba(216, 229, 225, .82); }
.header-utility__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 22px;
}
.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--data);
}
.pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--coral);
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(242, 100, 69, .6); }
  70% { box-shadow: 0 0 0 9px rgba(242, 100, 69, 0); }
  100% { box-shadow: 0 0 0 0 rgba(242, 100, 69, 0); }
}
.utility-link {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid rgba(94, 156, 139, .7);
  padding-bottom: 1px;
}
.utility-link:hover { color: var(--data); border-bottom-color: var(--data); }

.header-main {
  position: relative;
  background:
    linear-gradient(100deg, var(--deep) 0%, var(--ink) 78%, #0a2036 100%);
  color: var(--paper);
}
.header-main__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 28px;
  min-height: 82px;
  padding-block: 10px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--paper);
}
.brand__mark {
  --cut: 9px;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  background: var(--coral);
  color: #fff;
  font-size: 21px;
  font-weight: 900;
  letter-spacing: .04em;
}
.brand__text { display: grid; gap: 2px; }
.brand__name { font-size: 22px; font-weight: 900; letter-spacing: .1em; }
.brand__line {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: rgba(108, 196, 214, .9);
}
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: rgba(94, 156, 139, .18);
  border: 1px solid rgba(108, 196, 214, .4);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .14em;
  cursor: pointer;
}
.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--paper);
  transition: transform .25s ease, background .25s ease, opacity .25s ease;
}
.nav-toggle__bars { position: relative; }
.nav-toggle__bars::before { content: ""; position: absolute; left: 0; top: -6px; }
.nav-toggle__bars::after { content: ""; position: absolute; left: 0; top: 6px; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}
.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 10px 14px;
  color: rgba(244, 239, 226, .86);
  font-size: 15px;
  letter-spacing: .05em;
  text-decoration: none;
  transition: color .2s ease, background-color .2s ease;
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 5px;
  height: 2px;
  background: var(--celadon);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .26s ease;
}
.site-nav__link:hover,
.site-nav__link:focus-visible { color: #fff; }
.site-nav__link:hover::after,
.site-nav__link:focus-visible::after { transform: scaleX(1); }
.site-nav__link[aria-current="page"] {
  color: var(--card);
  background: rgba(94, 156, 139, .24);
}
.site-nav__link[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 50%;
  width: 5px;
  height: 5px;
  background: var(--coral);
  transform: translateY(-50%);
}
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); }
.site-nav__cta { margin-left: 12px; }

/* 6 按钮
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5em;
  padding: 12px 22px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .06em;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color .22s ease, color .22s ease, border-color .22s ease, transform .22s ease;
}
.btn--primary {
  --cut: 10px;
  background: var(--coral);
  color: #fff;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}
.btn--primary:hover { background: #ff7c5c; }
.btn--ghost {
  border-color: rgba(11, 42, 74, .3);
  color: var(--deep);
}
.btn--ghost:hover { background: var(--mist); border-color: var(--celadon); }
.btn--on-dark {
  border-color: rgba(216, 229, 225, .38);
  color: var(--paper);
}
.btn--on-dark:hover { background: rgba(94, 156, 139, .22); border-color: var(--celadon); }

/* 7 章节与文本
   -------------------------------------------------------------------------- */
.section { padding-block: clamp(46px, 6vw, 88px); }
.section__head {
  display: grid;
  gap: 12px;
  max-width: 64ch;
  margin-bottom: clamp(24px, 3vw, 40px);
}
.section__title { font-size: var(--h2); }
.section__lead { font-size: var(--step-1); color: rgba(6, 20, 33, .76); }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--celadon);
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: currentColor; }
.lead { font-size: var(--step-1); color: rgba(6, 20, 33, .8); }
.prose { max-width: 68ch; }
.prose p { margin-bottom: 1.1em; }
.prose h2 { margin: 1.6em 0 .6em; font-size: var(--h2); }
.prose h3 { margin: 1.4em 0 .5em; font-size: var(--h3); }
.prose ul, .prose ol { padding-left: 1.3em; margin-bottom: 1.1em; }
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li { margin-bottom: .4em; }
.prose a { color: var(--deep); text-decoration-color: var(--celadon); text-underline-offset: 3px; }

/* 8 面包屑与坐标轴导航
   -------------------------------------------------------------------------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--slate);
}
.breadcrumbs__item { display: inline-flex; align-items: center; }
.breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: 10px;
  color: var(--celadon);
}
.breadcrumbs a {
  color: var(--slate);
  text-decoration: none;
  border-bottom: 1px solid var(--mist);
}
.breadcrumbs a:hover { color: var(--deep); border-bottom-color: var(--celadon); }
.axis-nav { display: grid; }
.axis-nav__item { border-top: 1px solid var(--mist); }
.axis-nav__item:last-child { border-bottom: 1px solid var(--mist); }
.axis-nav__link {
  display: grid;
  grid-template-columns: 40px 1fr;
  align-items: baseline;
  gap: 12px;
  padding: 12px 4px;
  color: var(--slate);
  font-size: 15px;
  text-decoration: none;
  transition: color .2s ease, padding-left .2s ease;
}
.axis-nav__link:hover { color: var(--deep); padding-left: 10px; }
.axis-nav__link[aria-current="page"] { color: var(--ink); font-weight: 700; }
.axis-nav__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--celadon);
}
.axis-nav__link[aria-current="page"] .axis-nav__index { color: var(--coral); }
.axis-nav--sticky { position: sticky; top: 144px; }

/* 9 卡片、标签、时间线
   -------------------------------------------------------------------------- */
.card {
  padding: clamp(20px, 2.2vw, 30px);
  background: var(--card);
  border: 1px solid rgba(11, 42, 74, .14);
  box-shadow: var(--lift);
}
.card__title { font-size: var(--h3); margin-bottom: 10px; }
.card__body { color: rgba(6, 20, 33, .82); }
.card__meta {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--slate);
}
.card--label { position: relative; padding-left: clamp(24px, 2.6vw, 34px); }
.card--label::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--celadon), var(--data));
}
.card--accent { border-top: 4px solid var(--coral); }
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid currentColor;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  line-height: 1.6;
  color: var(--slate);
}
.tag--celadon { color: #3F7A69; }
.tag--amber { color: var(--amber-ink); }
.tag--coral { color: #C43F22; }
.timeline { border-left: 2px solid var(--mist); padding-left: 0; }
.timeline__item { position: relative; padding: 0 0 30px 28px; }
.timeline__item::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 8px;
  width: 12px;
  height: 12px;
  background: var(--celadon);
  border: 2px solid var(--paper);
}
.timeline__year {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--deep);
}

/* 10 表格与折叠面板
   -------------------------------------------------------------------------- */
.table-wrap {
  overflow-x: auto;
  background: var(--card);
  border: 1px solid rgba(11, 42, 74, .14);
}
.data-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 15px;
}
.data-table th {
  padding: 12px 16px;
  background: var(--deep);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .08em;
  text-align: left;
}
.data-table td {
  padding: 12px 16px;
  border-top: 1px solid var(--mist);
  vertical-align: top;
}
.data-table tbody tr:nth-child(even) { background: rgba(216, 229, 225, .34); }
.fold {
  margin-bottom: 12px;
  background: var(--card);
  border: 1px solid rgba(11, 42, 74, .14);
}
.fold__summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}
.fold__summary::-webkit-details-marker { display: none; }
.fold__summary::after {
  content: "＋";
  font-family: var(--font-mono);
  color: var(--coral);
}
.fold[open] .fold__summary::after { content: "－"; }
.fold__body { padding: 0 20px 20px; color: rgba(6, 20, 33, .82); }

/* 11 标签页
   -------------------------------------------------------------------------- */
.tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 26px;
  border-bottom: 1px solid var(--mist);
}
.tabs__tab {
  padding: 10px 16px;
  background: none;
  border: 0;
  border-bottom: 3px solid transparent;
  color: var(--slate);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .04em;
  cursor: pointer;
}
.tabs__tab:hover { color: var(--deep); background: rgba(216, 229, 225, .5); }
.tabs__tab[aria-selected="true"] {
  color: var(--deep);
  border-bottom-color: var(--coral);
  background: rgba(94, 156, 139, .14);
}
.tabs__panel[hidden] { display: none; }
.tabs__panel { animation: panelIn .32s ease both; }
@keyframes panelIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

/* 12 媒体容器（页面阶段放置图片或占位）
   -------------------------------------------------------------------------- */
.media { margin: 0; }
.media__frame {
  position: relative;
  display: block;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: linear-gradient(150deg, var(--deep), var(--ink));
  border: 1px solid rgba(11, 42, 74, .18);
}
.media__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(115deg, transparent 0 22px, rgba(108, 196, 214, .12) 22px 23px);
  pointer-events: none;
}
.media__frame > img,
.media__frame > svg,
.media__frame > .media__ph {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media__ph {
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: rgba(216, 229, 225, .62);
}
.media__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--slate);
}
.media--wide .media__frame { aspect-ratio: 21 / 9; }
.media--tall .media__frame { aspect-ratio: 4 / 5; }
.media--cut .media__frame {
  --cut: 18px;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

/* 13 网格
   -------------------------------------------------------------------------- */
.grid { display: grid; gap: clamp(18px, 2.4vw, 32px); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--asym { grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); }

/* 14 动效
   -------------------------------------------------------------------------- */
.js .reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s ease, transform .6s ease;
}
.js .reveal.is-visible { opacity: 1; transform: none; }

/* 15 页脚
   -------------------------------------------------------------------------- */
.site-footer {
  position: relative;
  overflow: hidden;
  padding-bottom: 26px;
  background: linear-gradient(180deg, var(--ink) 0%, #04101b 100%);
  color: var(--mist);
}
.site-footer__edge {
  position: absolute;
  top: 0;
  left: -4%;
  width: 108%;
  height: 8px;
  background: linear-gradient(90deg, var(--celadon), var(--data) 45%, var(--coral));
  transform: rotate(-1.2deg) translateY(-4px);
}
.site-footer::after {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -45%;
  width: 62%;
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(94, 156, 139, .3), rgba(108, 196, 214, .1) 45%, transparent 68%);
  pointer-events: none;
}
.footer-top {
  position: relative;
  z-index: 1;
  padding: clamp(56px, 7vw, 92px) 0 34px;
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, .85fr) minmax(0, .85fr) minmax(0, 1.2fr);
  gap: clamp(24px, 3vw, 48px);
}
.footer-brand { display: grid; gap: 14px; align-content: start; }
.footer-brand__name { font-size: 24px; font-weight: 900; letter-spacing: .1em; color: var(--paper); }
.footer-brand__line {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: rgba(108, 196, 214, .88);
}
.footer-brand__tags { display: flex; flex-wrap: wrap; gap: 8px; }
.footer-brand .btn { justify-self: start; margin-top: 4px; }
.footer-col__title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .18em;
  color: var(--celadon);
}
.footer-list { display: grid; gap: 10px; }
.footer-list a {
  font-size: 15px;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}
.footer-list a:hover { color: #fff; border-bottom-color: var(--celadon); }
.footer-contact {
  display: grid;
  gap: 10px;
  font-style: normal;
  font-size: 14.5px;
}
.footer-contact__row {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}
.footer-contact__key {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--celadon);
}
.footer-contact__val { color: var(--paper); }
.footer-contact__note {
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(216, 229, 225, .66);
}
.footer-base {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 28px;
  padding-top: 22px;
  border-top: 1px solid rgba(216, 229, 225, .18);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .08em;
  color: rgba(216, 229, 225, .68);
}

/* 16 响应式
   -------------------------------------------------------------------------- */
@media (max-width: 1080px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 960px) {
  .nav-toggle { display: inline-flex; }
  .header-main__inner { min-height: 74px; }
  .site-nav {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    display: block;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    background: var(--ink);
    border-top: 1px solid rgba(108, 196, 214, .28);
    transition: max-height .4s ease, opacity .26s ease;
  }
  .site-header[data-open="true"] .site-nav {
    max-height: 82vh;
    overflow-y: auto;
    opacity: 1;
  }
  .site-nav__list {
    display: grid;
    gap: 2px;
    padding: 12px var(--gutter) 6px;
  }
  .site-nav__link {
    padding: 14px 12px;
    border-left: 3px solid transparent;
    font-size: 16px;
  }
  .site-nav__link::after { left: 12px; right: auto; width: 34px; bottom: 8px; }
  .site-nav__link[aria-current="page"] { border-left-color: var(--coral); }
  .site-nav__cta { margin: 10px var(--gutter) 24px; width: calc(100% - var(--gutter) * 2); }
  .site-header[data-open="true"] .nav-toggle__bars { background: transparent; }
  .site-header[data-open="true"] .nav-toggle__bars::before { transform: translateY(6px) rotate(45deg); }
  .site-header[data-open="true"] .nav-toggle__bars::after { transform: translateY(-6px) rotate(-45deg); }
  .axis-nav--sticky { position: static; }
}
@media (max-width: 900px) {
  .grid--2, .grid--3, .grid--asym { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .header-utility__code { display: none; }
  .header-utility__inner { min-height: 38px; }
  .brand__line { font-size: 11px; }
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-base { justify-content: flex-start; }
}

/* 17 无障碍与偏好
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .js .reveal { opacity: 1; transform: none; }
}