/* ==========================================================================
   众赢安卓指南 — /assets/site.css
   共享外壳：reset、变量、中文排版、头部轨道导航、页脚、通用组件
   ========================================================================== */

/* ---------- 1. 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, dl, dd, dt,
figure, blockquote {
  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;
}

button {
  background: none;
  border: 0;
}

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

table {
  border-collapse: collapse;
}

/* ---------- 2. 变量 ---------- */
:root {
  --c-blue: #165DFF;
  --c-blue-deep: #0F4BD8;
  --c-orange: #FF7A1A;
  --c-ink: #10151F;
  --c-paper: #F4F6FA;
  --c-teal: #0B3B3C;
  --c-indigo: #332A7A;
  --c-wine: #6B1F3A;
  --c-graphite: #1C2430;
  --c-silver: #A8B3C7;
  --c-green: #1FB57A;

  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;

  --rail-w: 17.5rem;
  --head-h: 3.9rem;
  --wrap-max: 1240px;

  --radius-s: 0.5rem;
  --radius-m: 0.75rem;
  --radius-l: 1.1rem;

  --line-soft: rgba(168, 179, 199, 0.2);
  --line-faint: rgba(168, 179, 199, 0.12);

  --shadow-card: 0 26px 54px -42px rgba(16, 21, 31, 0.9);
  --shadow-rail: 0 24px 60px -40px rgba(0, 0, 0, 0.95);

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--c-paper);
  background-color: var(--c-ink);
  background-image:
    radial-gradient(1200px 620px at 12% -8%, rgba(22, 93, 255, 0.16), transparent 62%),
    radial-gradient(900px 520px at 96% 4%, rgba(255, 122, 26, 0.09), transparent 60%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: 0.045em;
  text-wrap: balance;
}

h1 { font-size: clamp(2.4rem, 6vw, 5rem); }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.6rem); }
h3 { font-size: 1.25rem; letter-spacing: 0.03em; }
h4 { font-size: 1.0625rem; letter-spacing: 0.02em; }

p { line-height: 1.75; }

code, kbd, samp, .mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
  letter-spacing: 0.02em;
}

:focus-visible {
  outline: 2px solid var(--c-orange);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: var(--c-orange);
  color: var(--c-ink);
}

/* ---------- 4. 布局工具 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap-max);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.prose {
  max-width: 42rem;
}

.prose p {
  margin-bottom: 1.2em;
  line-height: 1.9;
}

.prose p:last-child { margin-bottom: 0; }

.prose h2,
.prose h3 {
  margin: 2.2em 0 0.8em;
}

.prose h2:first-child,
.prose h3:first-child { margin-top: 0; }

.prose ul,
.prose ol {
  margin: 0 0 1.2em;
  padding-left: 1.4em;
}

.prose ul { list-style: none; }

.prose ul li::before {
  content: "→";
  color: var(--c-orange);
  font-family: var(--font-mono);
  display: inline-block;
  width: 1.4em;
  margin-left: -1.4em;
}

.prose ol { list-style: decimal; }

.prose li { margin-bottom: 0.5em; }

.prose a {
  color: var(--c-blue);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

.prose a:hover { color: var(--c-orange); }

.prose blockquote {
  border-left: 4px solid var(--c-orange);
  padding: 0.4rem 0 0.4rem 1.1rem;
  color: var(--c-silver);
  margin-bottom: 1.4em;
}

.grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

@media (min-width: 900px) {
  .grid--split {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }
  .grid--split > .col-main { grid-column: 1 / span 8; }
  .grid--split > .col-side { grid-column: 9 / span 4; }
  .grid--split > .col-offset { grid-column: 3 / span 8; }
}

.page-section {
  padding: 3.5rem 0;
}

.page-section--paper {
  background: var(--c-paper);
  color: var(--c-graphite);
}

.page-section--teal {
  background: var(--c-teal);
  color: var(--c-paper);
}

.page-section--indigo {
  background: var(--c-indigo);
  color: var(--c-paper);
}

.page-section--wine {
  background: var(--c-wine);
  color: var(--c-paper);
}

/* ---------- 5. 通用组件 ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-orange);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 1rem;
  margin-bottom: 1.6rem;
}

.section-head__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-orange);
  flex: none;
}

.section-head__title {
  font-size: clamp(1.6rem, 3.2vw, 2.6rem);
  letter-spacing: 0.045em;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.72rem 1.2rem;
  border-radius: var(--radius-s);
  border: 1px solid transparent;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: transform 0.18s var(--ease), background-color 0.18s var(--ease),
              color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--c-blue);
  color: #ffffff;
  box-shadow: 0 16px 32px -22px rgba(22, 93, 255, 0.95);
}

.btn--primary:hover { background: var(--c-blue-deep); }

.btn--accent {
  background: var(--c-orange);
  color: var(--c-ink);
  box-shadow: 0 16px 32px -22px rgba(255, 122, 26, 0.95);
}

.btn--accent:hover { background: #e96a10; }

.btn--outline {
  border-color: var(--c-graphite);
  color: var(--c-graphite);
}

.btn--outline:hover {
  background: var(--c-graphite);
  color: var(--c-paper);
}

.btn--ghost {
  border-color: var(--line-soft);
  color: inherit;
}

.btn--ghost:hover {
  border-color: var(--c-orange);
  color: var(--c-orange);
}

.card {
  position: relative;
  background: var(--c-paper);
  color: var(--c-graphite);
  border-radius: var(--radius-l);
  border: 1px solid rgba(28, 36, 48, 0.08);
  padding: 1.5rem 1.4rem 1.6rem;
  box-shadow: var(--shadow-card);
}

.card h3 { color: var(--c-graphite); }

.card p {
  color: #46536A;
  font-size: 0.95rem;
}

.card--route::after {
  content: "";
  position: absolute;
  left: 1.4rem;
  right: 1.4rem;
  bottom: 0;
  height: 4px;
  border-radius: 4px 4px 0 0;
  background: linear-gradient(90deg, var(--c-blue) 0 55%, var(--c-orange) 55% 100%);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.18rem 0.62rem;
  border-radius: 999px;
  border: 1px solid currentColor;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  line-height: 1.6;
}

.tag--blue { color: var(--c-blue); }
.tag--orange { color: var(--c-orange); }
.tag--green { color: var(--c-green); }
.tag--wine { color: var(--c-wine); }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  color: var(--c-silver);
}

.breadcrumb a {
  border-bottom: 1px solid rgba(168, 179, 199, 0.4);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.breadcrumb a:hover {
  color: var(--c-orange);
  border-color: var(--c-orange);
}

.breadcrumb__sep {
  opacity: 0.55;
  font-family: var(--font-mono);
}

/* 门洞式图片容器基础规则（页面阶段放入 <img class="figure__img">） */
.figure {
  position: relative;
  margin: 0;
}

.figure__frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-l);
  background:
    linear-gradient(155deg, var(--c-teal) 0%, var(--c-ink) 62%, var(--c-indigo) 100%);
  border: 1px solid var(--line-soft);
  box-shadow: var(--shadow-card);
}

.figure__frame::before {
  content: "";
  position: absolute;
  inset: 0.85rem;
  border: 1px dashed rgba(244, 246, 250, 0.22);
  border-radius: calc(var(--radius-l) - 0.4rem);
  pointer-events: none;
  z-index: 2;
}

.figure__frame::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--c-blue) 0 62%, var(--c-orange) 62% 100%);
  z-index: 3;
}

.figure__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.figure__caption {
  margin-top: 0.7rem;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  color: var(--c-silver);
}

/* 视口渐显 */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}

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

/* ---------- 6. 头部：轨道导航 ---------- */
.skip-link {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 200;
  padding: 0.7rem 1.1rem;
  background: var(--c-orange);
  color: var(--c-ink);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  border-radius: 0 0 var(--radius-s) 0;
  transform: translateY(-130%);
  transition: transform 0.2s var(--ease);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--c-ink);
  border-bottom: 1px solid var(--line-soft);
  color: var(--c-paper);
}

.rail {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--head-h);
  padding: 0.7rem 1rem;
}

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

.brand__mark {
  position: relative;
  flex: none;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.7rem;
  background: linear-gradient(150deg, var(--c-blue), #0d3fb0);
  box-shadow: 0 14px 26px -16px rgba(22, 93, 255, 0.95);
}

.brand__mark-line {
  position: absolute;
  left: 50%;
  top: 22%;
  width: 2px;
  height: 54%;
  border-radius: 2px;
  background: var(--c-paper);
  transform: translateX(-50%) rotate(20deg);
}

.brand__mark-dot {
  position: absolute;
  right: 0.5rem;
  bottom: 0.5rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--c-orange);
}

.brand__text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand__name {
  font-size: 1.0625rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1.3;
  white-space: nowrap;
}

.brand__tagline {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--c-silver);
  line-height: 1.5;
  white-space: nowrap;
}

/* 移动端抽屉按钮 */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  flex: none;
  padding: 0.5rem 0.8rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-s);
  color: var(--c-paper);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.nav-toggle:hover {
  border-color: var(--c-orange);
  color: var(--c-orange);
}

.nav-toggle__icon {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 18px;
  height: 14px;
}

.nav-toggle__icon i {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.site-header[data-open] .nav-toggle__icon i:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.site-header[data-open] .nav-toggle__icon i:nth-child(2) {
  opacity: 0;
}

.site-header[data-open] .nav-toggle__icon i:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* 导航本体：移动端全屏抽屉 */
.site-nav {
  position: fixed;
  inset: 0;
  z-index: 55;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: calc(var(--head-h) + 1.2rem) 1rem 2rem;
  background: var(--c-ink);
  overflow-y: auto;
  overscroll-behavior: contain;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: opacity 0.22s var(--ease), transform 0.22s var(--ease), visibility 0.22s;
}

.site-header[data-open] .site-nav {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.site-nav__title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-silver);
  padding: 0 0.85rem 0.5rem;
}

.site-nav__list {
  counter-reset: nav;
  padding: 0;
}

.site-nav__list li {
  position: relative;
  counter-increment: nav;
}

.site-nav__list li::before {
  content: "";
  position: absolute;
  left: -0.1rem;
  top: 50%;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--c-orange);
  opacity: 0;
  transform: translateY(-50%) scale(0.3);
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
}

.site-nav__list li.is-current::before {
  opacity: 1;
  transform: translateY(-50%) scale(1);
}

.site-nav__list a {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.72rem 0.9rem;
  border-radius: var(--radius-s);
  color: var(--c-silver);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease);
}

.site-nav__list a::before {
  content: counter(nav, decimal-leading-zero);
  flex: none;
  width: 1.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: rgba(168, 179, 199, 0.7);
  transition: color 0.18s var(--ease);
}

.site-nav__list a::after {
  content: "";
  position: absolute;
  right: 0.9rem;
  top: 50%;
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--c-orange);
  opacity: 0;
  transform: translateY(-50%) scale(0.4);
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
}

.site-nav__list a:hover,
.site-nav__list a:focus-visible {
  background: rgba(244, 246, 250, 0.06);
  color: var(--c-paper);
}

.site-nav__list a[aria-current="page"] {
  color: var(--c-paper);
  font-weight: 800;
  background: linear-gradient(90deg, rgba(22, 93, 255, 0.42), rgba(22, 93, 255, 0) 88%);
}

.site-nav__list a[aria-current="page"]::before {
  color: var(--c-orange);
}

.site-nav__list a[aria-current="page"]::after {
  opacity: 1;
  transform: translateY(-50%) scale(1);
}

/* 轨道底部 */
.rail-foot {
  margin-top: auto;
  padding: 1.2rem 0.85rem 0;
  border-top: 1px solid var(--line-faint);
}

.rail-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  padding: 0.72rem 0.95rem;
  border-radius: var(--radius-s);
  background: var(--c-orange);
  color: var(--c-ink);
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  transition: background-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.rail-cta:hover {
  background: #e96a10;
  transform: translateX(2px);
}

.rail-cta__arrow {
  font-family: var(--font-mono);
  transition: transform 0.18s var(--ease);
}

.rail-cta:hover .rail-cta__arrow {
  transform: translateX(3px);
}

.rail-meta {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 0.75rem;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--c-silver);
}

.rail-meta__dot {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--c-green);
  box-shadow: 0 0 0 3px rgba(31, 181, 122, 0.18);
  flex: none;
}

/* 滚动进度 */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: rgba(244, 246, 250, 0.07);
  pointer-events: none;
}

.scroll-progress__bar {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--c-blue), var(--c-orange));
  will-change: transform;
}

/* 返回顶部 */
.to-top {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 70;
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: 0.9rem;
  background: var(--c-ink);
  color: var(--c-paper);
  border: 1px solid var(--line-soft);
  box-shadow: var(--shadow-rail);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.22s var(--ease), transform 0.22s var(--ease),
              visibility 0.22s, border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.to-top[data-visible] {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.to-top:hover {
  border-color: var(--c-orange);
  color: var(--c-orange);
}

.to-top__icon {
  font-size: 1.1rem;
  line-height: 1;
}

/* ---------- 7. 桌面端：侧边轨道 ---------- */
@media (min-width: 1024px) {
  body {
    padding-left: var(--rail-w);
  }

  .site-header {
    position: fixed;
    inset: 0 auto 0 0;
    width: var(--rail-w);
    border-bottom: 0;
    border-right: 1px solid var(--line-soft);
    box-shadow: var(--shadow-rail);
  }

  .site-header::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 1.35rem;
    width: 1px;
    background: linear-gradient(180deg, transparent, rgba(22, 93, 255, 0.55) 18%, rgba(255, 122, 26, 0.45) 78%, transparent);
    pointer-events: none;
  }

  .rail {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    height: 100%;
    min-height: 0;
    padding: 1.6rem 1.1rem 1.2rem;
  }

  .brand {
    padding-bottom: 1.2rem;
    border-bottom: 1px solid var(--line-faint);
  }

  .nav-toggle {
    display: none;
  }

  .site-nav {
    position: static;
    inset: auto;
    z-index: auto;
    flex: 1 1 auto;
    min-height: 0;
    gap: 0.3rem;
    padding: 1.2rem 0 0;
    background: transparent;
    overflow-y: auto;
    opacity: 1;
    visibility: visible;
    transform: none;
    transition: none;
  }

  .site-nav__title {
    padding: 0 0.9rem 0.6rem;
  }

  .site-nav__list a {
    padding-block: 0.68rem;
  }

  .rail-foot {
    padding: 1.2rem 0 0;
  }
}

/* ---------- 8. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: 4rem;
  background:
    linear-gradient(180deg, rgba(51, 42, 122, 0.42), rgba(16, 21, 31, 0) 58%),
    var(--c-ink);
  border-top: 1px solid var(--line-soft);
  color: var(--c-paper);
}

.footer-stripe {
  height: 5px;
  background: linear-gradient(
    90deg,
    var(--c-blue) 0 22%,
    var(--c-orange) 22% 44%,
    var(--c-teal) 44% 62%,
    var(--c-indigo) 62% 82%,
    var(--c-wine) 82% 100%
  );
}

.footer-inner {
  display: grid;
  gap: 2.2rem;
  grid-template-columns: 1fr;
  max-width: var(--wrap-max);
  margin-inline: auto;
  padding: 3rem 1.25rem 2.4rem;
}

@media (min-width: 760px) {
  .footer-inner {
    grid-template-columns: 1.5fr 1fr 1.3fr;
    gap: 2.5rem;
  }
}

.footer-brand {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.footer-tagline {
  margin-top: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--c-orange);
}

.footer-blurb {
  margin-top: 1rem;
  max-width: 24rem;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--c-silver);
}

.footer-heading {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-silver);
  margin-bottom: 0.9rem;
}

.footer-nav__list {
  display: grid;
  gap: 0.55rem;
}

.footer-nav__list a {
  position: relative;
  display: inline-block;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  padding-left: 1.1rem;
  color: var(--c-paper);
  transition: color 0.18s var(--ease);
}

.footer-nav__list a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--c-blue);
  transition: background-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.footer-nav__list a:hover {
  color: var(--c-orange);
}

.footer-nav__list a:hover::before {
  background: var(--c-orange);
  transform: scale(1.35);
}

.footer-contact {
  display: grid;
  gap: 0.85rem;
}

.footer-contact__row {
  display: grid;
  gap: 0.1rem;
}

.footer-contact dt {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--c-silver);
}

.footer-contact dd {
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  word-break: break-word;
}

.footer-base {
  border-top: 1px solid var(--line-faint);
}

.footer-base__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1.4rem;
  max-width: var(--wrap-max);
  margin-inline: auto;
  padding: 1.1rem 1.25rem 1.7rem;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--c-silver);
}

.footer-copy {
  font-size: 0.82rem;
}

.footer-icp {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  padding: 0.18rem 0.6rem;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
}

/* ---------- 9. 动效与无障碍 ---------- */
@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;
  }

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