/* ==========================================================================
   德赢官网 · 共享样式表 /assets/site.css
   深海军蓝档案基底 · 青瓷绿 / 琥珀金 / 赤陶红 / 石墨灰档位编码
   ========================================================================== */

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

/* ---------- 2. 变量 ---------- */
:root {
  color-scheme: dark;

  --navy: #0A1A2A;
  --navy-mid: #12304A;
  --navy-deep: #0D2438;
  --paper: #F4F1EA;
  --ink: #12304A;
  --celadon: #17BFA3;
  --celadon-deep: #0C7F6C;
  --amber: #E9A93C;
  --terracotta: #CE5F3C;
  --graphite: #5C6570;
  --scale: #9AA6B4;

  --text: #E7E3DA;
  --glass: rgba(255, 255, 255, .10);
  --line: rgba(154, 166, 180, .26);
  --line-strong: rgba(154, 166, 180, .48);

  --rail-w: 88px;
  --rail-w-wide: 240px;
  --shell-max: 1180px;

  --ease: cubic-bezier(.22, .61, .36, 1);
  --dur: 220ms;
  --scan: 320ms;

  --font-display: "方正粗黑", "Source Han Sans SC Heavy", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-editorial: "Source Han Serif SC Medium", "Noto Serif SC", "Songti SC", "SimSun", serif;
  --font-body: "Source Han Sans SC Regular", "思源黑体", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

@media (min-width: 1024px) {
  :root[data-rail="open"] { --rail-w: var(--rail-w-wide); }
}

/* ---------- 3. 中文排版基底 ---------- */
body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--navy);
  background-image:
    radial-gradient(1100px 560px at 82% -8%, rgba(23, 191, 163, .10), transparent 62%),
    radial-gradient(880px 520px at 4% 106%, rgba(233, 169, 60, .07), transparent 64%);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: .005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  color: var(--paper);
  line-height: 1.2;
  letter-spacing: -.01em;
}

p { margin: 0 0 1em; max-width: 38em; }
p:last-child { margin-bottom: 0; }

a { color: var(--celadon); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

strong, b { font-weight: 700; color: var(--paper); }

::selection { background: var(--celadon); color: #04231D; }

:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
  border-radius: 1px;
}

#main-content { display: block; scroll-margin-top: 84px; }
@media (min-width: 1024px) { #main-content { scroll-margin-top: 24px; } }

/* ---------- 4. 布局工具 ---------- */
.shell {
  width: min(100% - 32px, var(--shell-max));
  margin-inline: auto;
}
@media (min-width: 768px) { .shell { width: min(100% - 56px, var(--shell-max)); } }

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}
@media (max-width: 1023px) {
  .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 16px; }
}

.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-12 { grid-column: span 12; }
@media (max-width: 1023px) {
  .span-4, .span-5, .span-6, .span-7, .span-8, .span-12 { grid-column: span 6; }
}

.stack { display: grid; gap: var(--stack-gap, 16px); }

.section { padding-block: clamp(40px, 6vw, 88px); }
.section__head { display: grid; gap: 12px; margin-bottom: clamp(20px, 3vw, 36px); }

.prose { max-width: 38em; }
.prose > * + * { margin-top: 1em; }

/* ---------- 5. 排版组件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--celadon);
  text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 24px; height: 1px; background: currentColor; flex: 0 0 auto; }

.display {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.4rem, 5.2vw, 4.6rem);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--paper);
}
.h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 2.6vw, 2.2rem);
  line-height: 1.22;
  color: var(--paper);
}
.h3 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.1rem, 1.6vw, 1.35rem);
  color: var(--paper);
}
.lede {
  font-family: var(--font-editorial);
  font-size: clamp(1.15rem, 2vw, 1.6rem);
  line-height: 1.7;
  color: #DAD5C9;
  max-width: 32em;
}
.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.25rem, 2.4vw, 2.2rem);
  letter-spacing: -.01em;
  color: var(--amber);
  line-height: 1.15;
}
.mono-inline { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

.stat { display: grid; gap: 6px; }
.stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.6rem, 3vw, 2.6rem);
  line-height: 1;
  color: var(--amber);
}
.stat__label { font-size: 13px; color: var(--scale); }

/* ---------- 6. 档案框 / 刻度线 ---------- */
.frame {
  position: relative;
  border: 1px solid var(--line-strong);
  background: linear-gradient(180deg, rgba(18, 48, 74, .55), rgba(10, 26, 42, .22));
}
.frame::before {
  content: "";
  position: absolute;
  inset: -1px;
  pointer-events: none;
  --c: var(--frame-corner, var(--celadon));
  background-image:
    linear-gradient(var(--c), var(--c)), linear-gradient(var(--c), var(--c)),
    linear-gradient(var(--c), var(--c)), linear-gradient(var(--c), var(--c)),
    linear-gradient(var(--c), var(--c)), linear-gradient(var(--c), var(--c)),
    linear-gradient(var(--c), var(--c)), linear-gradient(var(--c), var(--c));
  background-size:
    14px 1px, 1px 14px,
    14px 1px, 1px 14px,
    14px 1px, 1px 14px,
    14px 1px, 1px 14px;
  background-position:
    left top, left top,
    right top, right top,
    left bottom, left bottom,
    right bottom, right bottom;
  background-repeat: no-repeat;
}

.rule {
  position: relative;
  height: 1px;
  border: 0;
  margin: 0;
  background: var(--line);
  overflow: hidden;
}
.rule::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--celadon), rgba(23, 191, 163, 0));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--scan) var(--ease);
}
.rule.is-visible::after { transform: scaleX(1); }

/* ---------- 7. 面板 ---------- */
.panel {
  background: linear-gradient(180deg, rgba(18, 48, 74, .72), rgba(18, 48, 74, .40));
  border: 1px solid var(--line);
  padding: clamp(20px, 3vw, 32px);
}
.panel--paper {
  background: var(--paper);
  color: var(--ink);
  border-color: rgba(18, 48, 74, .18);
}
.panel--paper h2, .panel--paper h3, .panel--paper strong, .panel--paper .h2, .panel--paper .h3 { color: var(--ink); }
.panel--paper a { color: var(--celadon-deep); }
.panel--paper .mono, .panel--paper .stat__value { color: #A8681A; }
.panel--paper p { color: #24405A; }

/* ---------- 8. 按钮与芯片 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
              border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.btn:hover { border-color: var(--celadon); color: var(--celadon); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn--solid { background: var(--celadon); border-color: var(--celadon); color: #04231D; }
.btn--solid:hover { background: #12A48E; border-color: #12A48E; color: #04231D; }
.btn--amber { border-color: var(--amber); color: var(--amber); }
.btn--amber:hover { background: rgba(233, 169, 60, .14); color: var(--amber); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border: 1px solid var(--line-strong);
  background: var(--glass);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  font-size: 13px;
  color: var(--paper);
  white-space: nowrap;
}

/* ---------- 9. 档位徽章 ---------- */
.tier-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 13px;
  border: 1px solid currentColor;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.tier-badge--v1 {
  color: var(--celadon);
  background: linear-gradient(135deg, rgba(23, 191, 163, .26), rgba(23, 191, 163, .04));
}
.tier-badge--v2 {
  color: var(--amber);
  background: linear-gradient(135deg, rgba(233, 169, 60, .26), rgba(233, 169, 60, .04));
}
.tier-badge--v3 {
  color: #E4845F;
  background: linear-gradient(135deg, rgba(206, 95, 60, .28), rgba(206, 95, 60, .04));
}
.tier-badge--v4 {
  color: #AEB7C1;
  background: linear-gradient(135deg, rgba(92, 101, 112, .42), rgba(92, 101, 112, .08));
}

/* ---------- 10. 面包屑 ---------- */
.breadcrumb { padding-block: 16px; font-size: 13px; color: var(--scale); }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.breadcrumb li + li::before { content: "/"; margin-right: 8px; color: rgba(154, 166, 180, .55); }
.breadcrumb a { color: inherit; border-bottom: 1px solid transparent; }
.breadcrumb a:hover { color: var(--paper); border-bottom-color: var(--celadon); text-decoration: none; }

/* ---------- 11. 可访问标签页 ---------- */
.tabs { display: grid; gap: 20px; }
.tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  border-bottom: 1px solid var(--line);
}
.tabs__tab {
  appearance: none;
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  padding: 10px 16px;
  color: var(--scale);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.tabs__tab:hover { color: var(--paper); }
.tabs__tab[aria-selected="true"] { color: var(--paper); border-bottom-color: var(--celadon); }
.tabs__panel { padding-top: 18px; }
.tabs__panel[hidden] { display: none; }
.tabs__panel:focus-visible { outline: 2px solid var(--amber); outline-offset: 4px; }

/* ---------- 12. 图片 / 图形容器 ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  background: linear-gradient(160deg, var(--navy-mid), var(--navy));
  border: 1px solid var(--line);
  margin: 0;
}
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--3x4 { aspect-ratio: 3 / 4; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media__inner { width: 100%; height: 100%; object-fit: cover; }
.media-grid {
  background-image:
    linear-gradient(rgba(154, 166, 180, .13) 1px, transparent 1px),
    linear-gradient(90deg, rgba(154, 166, 180, .13) 1px, transparent 1px);
  background-size: 32px 32px, 32px 32px;
}
.media__caption { display: block; margin-top: 10px; font-size: 13px; color: var(--scale); }

/* ---------- 13. 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: -70px;
  left: 12px;
  z-index: 300;
  padding: 10px 18px;
  background: var(--paper);
  color: var(--ink);
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  transition: top 180ms var(--ease);
}
.skip-link:focus { top: 12px; text-decoration: none; }

/* ---------- 14. 轨道导航（移动优先） ---------- */
.rail {
  position: sticky;
  top: 0;
  z-index: 80;
  display: flex;
  flex-direction: column;
  width: 100%;
  background: rgba(10, 26, 42, .93);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  color: var(--paper);
}

.rail__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  color: var(--paper);
  text-decoration: none;
}
.brand:hover { text-decoration: none; }
.brand__seal {
  position: relative;
  flex: 0 0 38px;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--celadon);
  border-radius: 50%;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 15px;
  color: var(--celadon);
}
.brand__seal::after {
  content: "";
  position: absolute;
  inset: 4px;
  border: 1px dashed rgba(23, 191, 163, .45);
  border-radius: 50%;
}
.brand__text {
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow: hidden;
}
.brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 15px;
  letter-spacing: .01em;
  white-space: nowrap;
}
.brand__sub {
  font-size: 11px;
  line-height: 1.5;
  color: var(--scale);
}
@media (max-width: 767px) { .brand__sub { display: none; } }

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--paper);
  font-size: 13px;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.nav-toggle:hover { border-color: var(--celadon); color: var(--celadon); }
.nav-toggle__bars { display: inline-flex; flex-direction: column; gap: 3px; width: 16px; }
.nav-toggle__bars span {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.rail[data-open] .nav-toggle__bars span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.rail[data-open] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.rail[data-open] .nav-toggle__bars span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

.rail__collapse { display: none; }

.rail__drawer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--dur) var(--ease);
}
.rail[data-open] .rail__drawer {
  max-height: min(78vh, 640px);
  overflow-y: auto;
  border-top: 1px solid var(--line);
}

.rail__nav { padding: 10px 0 6px; }
.rail-nav__label {
  margin: 0 0 6px;
  padding: 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--scale);
  max-width: none;
}
.rail-nav__list { display: flex; flex-direction: column; gap: 2px; margin: 0; padding: 0; list-style: none; }
.rail-nav__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  color: var(--text);
  font-size: 15px;
  border-left: 2px solid transparent;
  white-space: nowrap;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}
.rail-nav__link:hover { background: var(--glass); color: var(--paper); text-decoration: none; }
.rail-nav__link[aria-current="page"] {
  color: #FFFFFF;
  background: linear-gradient(90deg, rgba(23, 191, 163, .18), rgba(23, 191, 163, 0));
  border-left-color: var(--celadon);
}
.rail-nav__link[aria-current="page"] .rail-nav__num { color: var(--celadon); opacity: 1; }
.rail-nav__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--scale);
  flex: 0 0 auto;
}
.rail-nav__text { overflow: hidden; text-overflow: ellipsis; }

.rail__foot {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px 16px 18px;
  border-top: 1px solid var(--line);
}

.rail__meter { display: flex; align-items: center; gap: 8px; }
.rail__meter-track {
  position: relative;
  flex: 1 1 auto;
  height: 2px;
  background: rgba(154, 166, 180, .25);
  overflow: hidden;
}
.rail__meter-fill {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--celadon), var(--amber));
  transition: width 120ms linear;
}
.rail__meter-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  color: var(--scale);
}

.rail__meta {
  margin: 0;
  font-size: 11px;
  line-height: 1.6;
  color: var(--scale);
  max-width: none;
}

.rail__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  background: var(--celadon);
  border: 1px solid rgba(23, 191, 163, .65);
  color: #04231D;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.rail__cta:hover { background: #12A48E; text-decoration: none; color: #04231D; }

/* ---------- 15. 桌面端轨道 ---------- */
@media (min-width: 1024px) {
  body {
    padding-left: var(--rail-w);
    transition: padding-left var(--dur) var(--ease);
  }
  .rail {
    position: fixed;
    inset: 0 auto 0 0;
    width: var(--rail-w);
    border-bottom: 0;
    border-right: 1px solid var(--line);
    transition: width var(--dur) var(--ease);
  }
  .rail__top {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    padding: 20px 14px 16px;
    border-bottom: 1px solid var(--line);
  }
  .brand { justify-content: center; }
  .brand__text {
    opacity: 0;
    width: 0;
    transition: opacity 180ms var(--ease);
  }
  :root[data-rail="open"] .brand { justify-content: flex-start; }
  :root[data-rail="open"] .brand__text { opacity: 1; width: auto; }

  .nav-toggle { display: none; }

  .rail__collapse {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 8px 12px;
    background: var(--glass);
    border: 1px solid var(--line);
    color: var(--scale);
    font-family: var(--font-body);
    font-size: 12px;
    cursor: pointer;
    transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
  }
  .rail__collapse:hover { color: var(--paper); border-color: var(--line-strong); }
  .rail__collapse-icon {
    flex: 0 0 auto;
    width: 8px;
    height: 8px;
    border-top: 1.5px solid currentColor;
    border-right: 1.5px solid currentColor;
    transform: rotate(45deg);
    transition: transform var(--dur) var(--ease);
  }
  :root[data-rail="open"] .rail__collapse-icon { transform: rotate(-135deg); }
  .rail__collapse-text { white-space: nowrap; overflow: hidden; }

  .rail__drawer {
    display: flex;
    flex: 1 1 auto;
    flex-direction: column;
    justify-content: space-between;
    max-height: none;
    overflow: visible;
    border-top: 0;
  }
  .rail__nav { padding: 12px 0; }
  .rail-nav__label {
    padding: 0 12px;
    opacity: 0;
    transition: opacity 160ms var(--ease);
  }
  :root[data-rail="open"] .rail-nav__label { opacity: 1; }
  .rail-nav__link { padding: 10px 12px; gap: 0; }
  .rail-nav__text {
    opacity: 0;
    width: 0;
    transition: opacity 160ms var(--ease);
  }
  :root[data-rail="open"] .rail-nav__link { gap: 10px; }
  :root[data-rail="open"] .rail-nav__text { opacity: 1; width: auto; }

  .rail__foot { padding: 14px 12px 18px; }
  .rail__meta { font-size: 10px; overflow-wrap: anywhere; }
  .rail__meter-value { display: none; }
  :root[data-rail="open"] .rail__meter-value { display: inline; }

  .rail__cta {
    font-size: 0;
    padding: 10px 0;
    width: 100%;
  }
  .rail__cta::before {
    content: "询价";
    font-size: 13px;
    font-family: var(--font-body);
  }
  :root[data-rail="open"] .rail__cta { font-size: 14px; padding: 10px 16px; }
  :root[data-rail="open"] .rail__cta::before { content: none; }
}

/* ---------- 16. 页脚 ---------- */
.site-foot {
  margin-top: clamp(48px, 7vw, 96px);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(18, 48, 74, .35), rgba(13, 36, 56, .88));
  color: var(--scale);
}
.site-foot .rule { background: rgba(154, 166, 180, .18); }

.site-foot__inner {
  display: grid;
  grid-template-columns: minmax(200px, 1fr) minmax(0, 2.2fr);
  gap: clamp(24px, 4vw, 56px);
  padding-block: clamp(32px, 4.5vw, 64px);
}

.site-foot__brand { min-width: 0; }
.site-foot__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.15rem;
  color: var(--paper);
  letter-spacing: -.01em;
  margin: 0 0 10px;
  max-width: none;
}
.site-foot__desc { margin: 0 0 6px; font-size: 13px; line-height: 1.7; }

.site-foot__cols {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 28px);
}
.site-foot__col { min-width: 0; }
.site-foot__col-title {
  margin: 0 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--paper);
}
.site-foot__links { display: flex; flex-direction: column; gap: 8px; margin: 0; padding: 0; list-style: none; }
.site-foot__links a {
  color: var(--scale);
  font-size: 14px;
  line-height: 1.6;
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}
.site-foot__links a:hover { color: var(--celadon); padding-left: 4px; text-decoration: none; }

.site-foot__bottom {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-block: 22px 36px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
}
.site-foot__legal { display: flex; flex-wrap: wrap; gap: 6px 20px; margin: 0; max-width: none; }
.site-foot__contact,
.site-foot__note { margin: 0; line-height: 1.8; }

@media (max-width: 1023px) {
  .site-foot__inner { grid-template-columns: 1fr; }
}
@media (max-width: 719px) {
  .site-foot__cols { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px 16px; }
}

/* ---------- 17. 辅助类 ---------- */
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- 18. 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    transition-delay: 0ms !important;
  }
}