/* ============================================================
   鼎博移动端 · CN 导航 — 共享外壳样式
   深墨蓝导航台 + 熔金橙赛季标记 + 冷光青交互反馈
   ============================================================ */

:root {
  --ink: #0A1B2A;
  --ink-deep: #06121E;
  --panel: #102A3C;
  --gold: #F2A23A;
  --gold-soft: #FFC46B;
  --cyan: #58D3C8;
  --cyan-deep: #2A8F8A;
  --moss: #6C815B;
  --mist: #A9B6BF;
  --cream: #F4EDE2;
  --ice: #EAF2F5;
  --coral: #E86A5B;

  --rail-w: 268px;
  --wrap: 1240px;
  --pad-x: clamp(20px, 5vw, 64px);

  --radius-l: 28px;
  --radius-m: 18px;
  --radius-s: 12px;

  --font-body: "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-display: "Source Han Sans SC Heavy", "Alibaba PuHuiTi Heavy", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "JetBrains Mono", "IBM Plex Mono", Menlo, Consolas, monospace;
  --font-serif: "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;

  --line: rgba(169, 182, 191, 0.16);
  --line-strong: rgba(88, 211, 200, 0.28);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ice);
  background-color: var(--ink);
  background-image:
    radial-gradient(880px 620px at 8% -8%, rgba(88, 211, 200, 0.09), transparent 68%),
    radial-gradient(720px 540px at 98% 6%, rgba(242, 162, 58, 0.07), transparent 70%);
  background-repeat: no-repeat;
  overflow-x: hidden;
}

img, svg, video { max-width: 100%; display: block; }
button, input, select, textarea { font: inherit; color: inherit; }

a { color: var(--cyan); text-decoration-thickness: 1px; text-underline-offset: 3px; }

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

/* ---------- 中文排版 ---------- */
h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.16;
  margin: 0;
  color: var(--ice);
}
h1 { font-size: clamp(2.3rem, 5vw, 4rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.15rem, 1.8vw, 1.5rem); letter-spacing: -0.01em; }
h4 { font-size: 1.05rem; letter-spacing: 0; }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

.quote, blockquote {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  line-height: 1.7;
  color: rgba(244, 237, 226, 0.92);
  border-left: 3px solid var(--gold);
  padding-left: 18px;
  margin: 1.6em 0;
}

/* ---------- 布局容器 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

.section {
  position: relative;
  padding-block: clamp(44px, 7vw, 96px);
}

.section--tight { padding-block: clamp(28px, 4vw, 56px); }

.section--deep {
  background: linear-gradient(180deg, rgba(6, 18, 30, 0) 0%, rgba(6, 18, 30, 0.85) 22%, rgba(6, 18, 30, 0.85) 78%, rgba(6, 18, 30, 0) 100%);
}

.section--paper {
  background: var(--cream);
  color: #16263A;
}
.section--paper h1, .section--paper h2, .section--paper h3 { color: #0A1B2A; }
.section--paper p { color: rgba(22, 38, 58, 0.82); }
.section--paper .eyebrow { color: var(--cyan-deep); }
.section--paper .lead { color: rgba(22, 38, 58, 0.78); }

.section-head { display: grid; gap: 14px; max-width: 760px; margin-bottom: clamp(26px, 4vw, 46px); }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: currentColor;
  opacity: 0.65;
  flex: none;
}

.lead {
  font-size: clamp(1rem, 1.35vw, 1.15rem);
  line-height: 1.7;
  color: rgba(234, 242, 245, 0.78);
  max-width: 64ch;
}

.rule {
  height: 1px;
  border: 0;
  margin: 0;
  background: linear-gradient(90deg, rgba(242, 162, 58, 0.7), rgba(88, 211, 200, 0.35) 45%, rgba(169, 182, 191, 0.05));
}

.doc { max-width: 760px; }

.prose { font-size: 16px; line-height: 1.78; color: rgba(234, 242, 245, 0.82); }
.prose h2 { margin-top: 2.2em; margin-bottom: 0.6em; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin-top: 1.7em; margin-bottom: 0.5em; color: var(--gold-soft); }
.prose ul, .prose ol { padding-left: 1.25em; margin: 0 0 1.2em; }
.prose li { margin-bottom: 0.5em; }
.prose strong { color: var(--ice); font-weight: 700; }
.prose a { color: var(--cyan); }

/* ---------- 栅格 ---------- */
.grid { display: grid; gap: clamp(18px, 2.2vw, 28px); }
.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, 1fr) minmax(0, 1.45fr); }
.grid--wide { gap: clamp(24px, 3.4vw, 44px); }

@media (max-width: 767px) {
  .grid--2, .grid--3, .grid--asym { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- 标签与胶囊 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 13px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: rgba(88, 211, 200, 0.12);
  border: 1px solid var(--line-strong);
  color: var(--cyan);
  white-space: nowrap;
}
.tag--gold {
  background: rgba(242, 162, 58, 0.14);
  border-color: rgba(242, 162, 58, 0.4);
  color: var(--gold-soft);
}
.tag--moss {
  background: rgba(108, 129, 91, 0.18);
  border-color: rgba(108, 129, 91, 0.55);
  color: #A8BC94;
}
.tag--cyan { background: rgba(88, 211, 200, 0.12); border-color: var(--line-strong); color: var(--cyan); }

.season-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  background: rgba(242, 162, 58, 0.14);
  border: 1px solid rgba(242, 162, 58, 0.4);
  color: var(--gold-soft);
  white-space: nowrap;
}
.season-chip::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 8px rgba(242, 162, 58, 0.9);
  flex: none;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.btn--gold {
  background: linear-gradient(120deg, var(--gold) 0%, var(--gold-soft) 100%);
  color: var(--ink-deep);
}
.btn--gold:hover { box-shadow: 0 0 0 4px rgba(242, 162, 58, 0.18); transform: translateY(-1px); }
.btn--ghost {
  background: rgba(88, 211, 200, 0.07);
  border-color: rgba(88, 211, 200, 0.34);
  color: var(--ice);
}
.btn--ghost:hover { background: rgba(88, 211, 200, 0.16); border-color: var(--cyan); }
.btn--block { width: 100%; }

/* ---------- 卡片 ---------- */
.card {
  position: relative;
  padding: clamp(20px, 2.4vw, 30px);
  border-radius: var(--radius-l);
  background: linear-gradient(160deg, rgba(16, 42, 60, 0.94) 0%, rgba(6, 18, 30, 0.94) 100%);
  border: 1px solid var(--line);
  overflow: hidden;
}
.card--paper {
  background: var(--cream);
  border-color: rgba(10, 27, 42, 0.14);
  color: #16263A;
}
.card--paper h3, .card--paper h4 { color: #0A1B2A; }
.card--paper p { color: rgba(22, 38, 58, 0.8); }
.card--moss { border-color: rgba(108, 129, 91, 0.5); }
.card--offset { transform: translateY(-10px); }

/* ---------- 面包屑 ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
}
.crumbs a { color: var(--mist); text-decoration: none; }
.crumbs a:hover { color: var(--cyan); }
.crumbs__sep { color: rgba(169, 182, 191, 0.4); }
.crumbs [aria-current="page"] { color: var(--gold-soft); }

/* ---------- 图像容器基础规则 ---------- */
.media {
  position: relative;
  border-radius: var(--radius-l);
  overflow: hidden;
  background: linear-gradient(150deg, var(--panel) 0%, var(--ink-deep) 100%);
  border: 1px solid var(--line);
}
.media__img { display: block; width: 100%; height: 100%; object-fit: cover; }
.media--16x9 { aspect-ratio: 16 / 9; }
.media--21x9 { aspect-ratio: 21 / 9; }
.media--4x5 { aspect-ratio: 4 / 5; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--tilt { transform: rotate(-1.4deg); }
.media__grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(88, 211, 200, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(88, 211, 200, 0.09) 1px, transparent 1px);
  background-size: 44px 44px;
}
.media__cap {
  position: absolute;
  left: 16px;
  bottom: 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 13px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ice);
  background: rgba(6, 18, 30, 0.7);
  border: 1px solid rgba(88, 211, 200, 0.26);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

/* ---------- 动效协议 ---------- */
[data-reveal] { transition: opacity 0.3s ease, transform 0.3s ease; }
html.js [data-reveal] { opacity: 0; transform: translateY(14px); }
html.js [data-reveal].is-visible { opacity: 1; transform: none; }

/* ============================================================
   跳转链接
   ============================================================ */
.skip-link {
  position: absolute;
  left: 14px;
  top: -80px;
  z-index: 300;
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--gold);
  color: var(--ink-deep);
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 14px; }

/* ============================================================
   头部 · 侧边轨道导航
   ============================================================ */
.site-rail {
  position: sticky;
  top: 0;
  z-index: 80;
}

.site-rail__inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
  padding: 10px var(--pad-x);
  background: rgba(6, 18, 30, 0.94);
  border-bottom: 1px solid var(--line);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
  flex: none;
}
.brand__mark {
  width: 44px;
  height: 44px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: linear-gradient(140deg, rgba(242, 162, 58, 0.24), rgba(88, 211, 200, 0.16));
  border: 1px solid rgba(242, 162, 58, 0.44);
}
.brand__mark-core {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  line-height: 1;
  color: var(--gold-soft);
}
.brand__stack { display: flex; flex-direction: column; line-height: 1.28; }
.brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 16px;
  letter-spacing: -0.01em;
  color: var(--ice);
}
.brand__sub {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}
.brand--foot .brand__mark { width: 40px; height: 40px; }
.brand--foot .brand__name { font-size: 15px; }

/* 移动端菜单按钮 */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 16px;
  border-radius: 999px;
  background: rgba(88, 211, 200, 0.08);
  border: 1px solid rgba(88, 211, 200, 0.3);
  color: var(--ice);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  cursor: pointer;
  flex: none;
}
.nav-toggle:hover { background: rgba(88, 211, 200, 0.18); }
.nav-toggle__bars { display: inline-flex; flex-direction: column; gap: 3px; width: 16px; }
.nav-toggle__bars span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--gold);
  transition: transform 0.18s ease, opacity 0.18s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }
.nav-toggle__text { line-height: 1; }

/* 桌面副信息（移动端隐藏） */
.rail__meta { display: none; }
.rail__slogan {
  margin: 0 0 6px;
  font-size: 13px;
  color: rgba(234, 242, 245, 0.62);
  letter-spacing: 0.02em;
}
.rail__coords {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: rgba(169, 182, 191, 0.72);
}

/* 导航本体（移动端 = 抽屉） */
.site-nav {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 100;
  width: min(320px, 86vw);
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 24px 20px 32px;
  overflow-y: auto;
  background: linear-gradient(180deg, #06121E 0%, #0A1B2A 58%, #102A3C 100%);
  border-right: 1px solid var(--line-strong);
  transform: translateX(-102%);
  transition: transform 0.24s ease;
}
.site-nav[data-open="true"] { transform: translateX(0); }

.site-nav__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.site-nav__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.site-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.site-nav__item { display: block; }

.site-nav__link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 14px;
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  color: rgba(234, 242, 245, 0.76);
  transition: background-color 0.16s ease, color 0.16s ease, transform 0.16s ease, box-shadow 0.16s ease;
}
.site-nav__link:hover {
  background: rgba(88, 211, 200, 0.09);
  color: var(--ice);
  transform: translateX(3px);
}
.site-nav__index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cyan-deep);
  flex: none;
}
.site-nav__link[aria-current="page"] {
  background: linear-gradient(90deg, rgba(242, 162, 58, 0.2), rgba(242, 162, 58, 0));
  color: #FFDFAE;
  box-shadow: inset 3px 0 0 var(--gold);
}
.site-nav__link[aria-current="page"] .site-nav__index { color: var(--gold); }
.site-nav__link[aria-current="true"] {
  background: rgba(88, 211, 200, 0.12);
  color: var(--cyan);
}

.site-nav__foot {
  display: grid;
  gap: 10px;
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px dashed rgba(169, 182, 191, 0.2);
}

.rail__link-cta {
  display: block;
  padding: 8px 0;
  border-radius: 999px;
  border: 1px dashed rgba(88, 211, 200, 0.32);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  text-decoration: none;
  transition: background-color 0.16s ease, border-color 0.16s ease;
}
.rail__link-cta:hover { background: rgba(88, 211, 200, 0.1); border-color: var(--cyan); }

/* 滚动进度 */
.rail-progress { display: none; }

/* 遮罩 */
.rail-backdrop {
  position: fixed;
  inset: 0;
  z-index: 90;
  margin: 0;
  padding: 0;
  border: 0;
  background: rgba(6, 18, 30, 0.68);
  opacity: 0;
  visibility: hidden;
  cursor: pointer;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}
.rail-backdrop[data-open="true"] { opacity: 1; visibility: visible; }

@media (max-width: 1023px) {
  body.is-nav-open { overflow: hidden; }
}

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

  .site-rail {
    position: fixed;
    inset: 0 auto 0 0;
    width: var(--rail-w);
  }

  .site-rail__inner {
    height: 100%;
    min-height: 0;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 22px;
    padding: 30px 22px 26px;
    border-bottom: 0;
    border-right: 1px solid rgba(88, 211, 200, 0.14);
    background: linear-gradient(180deg, #06121E 0%, #0A1B2A 52%, #102A3C 100%);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    overflow-y: auto;
    scrollbar-width: thin;
  }

  .nav-toggle { display: none; }

  .rail__meta { display: block; padding-top: 2px; }

  .site-nav {
    position: static;
    inset: auto;
    width: auto;
    transform: none;
    flex: 1;
    padding: 0;
    overflow: visible;
    background: none;
    border-right: 0;
    border-top: 1px dashed rgba(169, 182, 191, 0.2);
    padding-top: 20px;
  }

  .site-nav__head { margin-bottom: 4px; }

  .rail-backdrop { display: none; }

  .rail-progress {
    display: block;
    position: absolute;
    top: 0;
    right: 0;
    width: 2px;
    height: 0;
    background: linear-gradient(180deg, var(--cyan) 0%, var(--gold) 100%);
    transition: height 0.1s linear;
  }
}

/* ============================================================
   页脚
   ============================================================ */
.site-foot {
  position: relative;
  margin-top: clamp(56px, 8vw, 110px);
  overflow: hidden;
  color: var(--ice);
  border-top: 1px solid rgba(88, 211, 200, 0.18);
  background:
    repeating-linear-gradient(-52deg, rgba(88, 211, 200, 0.035) 0 1px, transparent 1px 22px),
    linear-gradient(180deg, #0A1B2A 0%, #06121E 58%, #06121E 100%);
}
.site-foot::before {
  content: "";
  position: absolute;
  top: -46%;
  right: -12%;
  width: 620px;
  height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, rgba(242, 162, 58, 0.16), transparent 66%);
  pointer-events: none;
}
.site-foot::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--gold) 42%, var(--moss) 74%, rgba(108, 129, 91, 0) 100%);
}
.site-foot p { margin: 0; }

.site-foot__wrap {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

.site-foot__top {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
  grid-template-columns: minmax(0, 1fr);
  padding-block: clamp(38px, 5.5vw, 68px) clamp(24px, 3vw, 36px);
}
@media (min-width: 800px) {
  .site-foot__top { grid-template-columns: minmax(0, 1.05fr) minmax(0, 2fr); }
}

.site-foot__brand { display: grid; gap: 14px; align-content: start; }
.site-foot__tag { font-size: 14px; color: rgba(234, 242, 245, 0.72); }
.site-foot__coords {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: rgba(88, 211, 200, 0.8);
}

.site-foot__cols {
  display: grid;
  gap: 26px 20px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
@media (max-width: 559px) {
  .site-foot__cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.site-foot__col-title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
  margin: 0 0 14px;
}
.site-foot__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.site-foot__links a {
  font-size: 14.5px;
  color: rgba(234, 242, 245, 0.8);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}
.site-foot__links a:hover { color: var(--cyan); border-bottom-color: rgba(88, 211, 200, 0.5); }

.site-foot__meta {
  display: grid;
  gap: 22px;
  padding-block: clamp(22px, 3vw, 32px);
  border-top: 1px dashed rgba(169, 182, 191, 0.22);
}
@media (min-width: 900px) {
  .site-foot__meta { grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.5fr); align-items: start; }
}
.site-foot__note {
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.7;
  color: rgba(244, 237, 226, 0.78);
  max-width: 46ch;
}
.site-foot__contact {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.site-foot__contact li { display: flex; align-items: baseline; gap: 12px; font-size: 14px; }
.site-foot__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan-deep);
  min-width: 44px;
  flex: none;
}
.site-foot__v { color: rgba(234, 242, 245, 0.86); word-break: break-word; }

.site-foot__base {
  position: relative;
  z-index: 1;
  border-top: 1px solid rgba(169, 182, 191, 0.14);
  background: rgba(6, 18, 30, 0.6);
}
.site-foot__base-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding-block: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}
.site-foot__icp { color: rgba(169, 182, 191, 0.82); }

.to-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid rgba(88, 211, 200, 0.32);
  background: rgba(88, 211, 200, 0.1);
  color: var(--ice);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background-color 0.16s ease, border-color 0.16s ease, transform 0.16s ease;
}
.to-top:hover { background: rgba(88, 211, 200, 0.2); border-color: var(--cyan); transform: translateY(-1px); }
.to-top__arrow { color: var(--gold); line-height: 1; }

/* ---------- 平板 ---------- */
@media (min-width: 768px) and (max-width: 1023px) {
  .site-rail__inner { min-height: 70px; }
}

/* ---------- 减少动态 ---------- */
@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;
  }
  html.js [data-reveal] { opacity: 1; transform: none; }
  .media--tilt { transform: none; }
  .site-nav { transition: none; }
}