/* ============================================================
   /assets/site.css — 华体网登录口 共享外壳与基础组件
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

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

ul, ol { padding: 0; list-style: none; }

h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; }

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

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

/* ---------- 2. Tokens ---------- */
:root {
  --mist-200: #DCE6EC;
  --cream-100: #F6F1E7;
  --abyss-900: #071A2B;
  --abyss-700: #0D2E47;
  --electric-500: #16D9D1;
  --electric-100: #C9FBF7;
  --coral-500: #FF6B4A;
  --coral-400: #FF8A6E;
  --ink-900: #241C18;
  --ink-600: #5D5650;
  --line-300: #A9B7C1;
  --white: #FFFFFF;

  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, "Times New Roman", serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --grid-max: 1280px;
  --edge: clamp(18px, 4vw, 48px);
  --desk-header-h: 104px;
}

/* ---------- 3. 基础排版与画布 ---------- */
body {
  min-height: 100%;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-900);
  background-color: var(--mist-200);
  background-image:
    linear-gradient(rgba(169, 183, 193, 0.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(169, 183, 193, 0.22) 1px, transparent 1px);
  background-size: 96px 96px;
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

@media (min-width: 768px) {
  body { font-size: 17px; }
}

::selection {
  background: var(--electric-500);
  color: var(--abyss-900);
}

:focus-visible {
  outline: 3px solid var(--electric-500);
  outline-offset: 3px;
  border-radius: 2px;
}

.mono,
.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
}

.kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-600);
}

.rule {
  height: 1px;
  border: 0;
  background: var(--line-300);
  margin: 0;
}

/* ---------- 4. 布局容器 ---------- */
.wrap {
  width: 100%;
  max-width: var(--grid-max);
  margin-inline: auto;
  padding-inline: var(--edge);
}

.wrap--wide { max-width: 1440px; }

.section { padding-block: clamp(56px, 7vw, 110px); }
.section--tight { padding-block: clamp(32px, 4vw, 64px); }

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 28px);
}

.span-4, .span-5, .span-6, .span-7, .span-8, .span-12 { grid-column: span 12; }

@media (min-width: 860px) {
  .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; }
}

.main-offset {
  padding-top: calc(var(--desk-header-h) + clamp(16px, 3vw, 40px));
}

/* ---------- 5. 堆叠面板 ---------- */
.slab {
  position: relative;
  background: var(--cream-100);
  border: 1px solid var(--line-300);
  border-radius: 2px;
  padding: clamp(20px, 3vw, 40px);
  color: var(--ink-900);
  box-shadow: 0 1px 0 rgba(7, 26, 43, 0.05), 0 26px 46px -40px rgba(7, 26, 43, 0.65);
}

.slab--mist {
  background: rgba(220, 230, 236, 0.72);
  border-color: rgba(169, 183, 193, 0.85);
}

.slab--abyss {
  background: var(--abyss-900);
  border-color: rgba(22, 217, 209, 0.34);
  color: var(--cream-100);
}

.slab--offset { margin-left: clamp(0px, 3vw, 48px); }

/* ---------- 6. 展签 ---------- */
.plate {
  padding-left: 16px;
  border-left: 2px solid var(--electric-500);
}

.plate__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--coral-500);
}

.plate__title {
  display: block;
  margin-top: 4px;
  font-size: clamp(1.25rem, 2.2vw, 1.75rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink-900);
}

.plate__note {
  display: block;
  margin-top: 6px;
  max-width: 52ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-600);
}

.plate--onDark { border-left-color: var(--coral-500); }
.plate--onDark .plate__title { color: var(--white); }
.plate--onDark .plate__note { color: rgba(220, 230, 236, 0.8); }

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 22px;
  border-radius: 2px;
  border: 1px solid transparent;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.2;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.btn--solid {
  background: var(--electric-500);
  border-color: var(--electric-500);
  color: var(--abyss-900);
}
.btn--solid:hover { background: var(--electric-100); border-color: var(--electric-100); }

.btn--coral {
  background: var(--coral-500);
  border-color: var(--coral-500);
  color: var(--abyss-900);
}
.btn--coral:hover { background: var(--coral-400); border-color: var(--coral-400); }

.btn--ghost {
  background: transparent;
  border-color: rgba(246, 241, 231, 0.42);
  color: var(--cream-100);
}
.btn--ghost:hover { border-color: var(--electric-500); color: var(--white); }

.btn--line {
  background: transparent;
  border-color: var(--line-300);
  color: var(--abyss-700);
}
.btn--line:hover { border-color: var(--abyss-700); background: rgba(246, 241, 231, 0.9); }

/* ---------- 8. 标签与面包屑 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 10px;
  border-radius: 2px;
  border: 1px solid rgba(22, 217, 209, 0.6);
  background: var(--electric-100);
  color: var(--abyss-900);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  line-height: 1.4;
}

.tag--ghost {
  background: transparent;
  border-color: var(--line-300);
  color: var(--ink-600);
}

.breadcrumbs {
  font-size: 13px;
  color: var(--ink-600);
}

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.breadcrumbs__link {
  color: var(--ink-600);
  text-decoration: underline;
  text-decoration-color: rgba(169, 183, 193, 0.9);
  text-underline-offset: 3px;
}
.breadcrumbs__link:hover {
  color: var(--abyss-700);
  text-decoration-color: var(--electric-500);
}

.breadcrumbs__sep { color: var(--line-300); }

.breadcrumbs [aria-current="page"] {
  color: var(--ink-900);
  font-weight: 600;
}

/* ---------- 9. 长文阅读面板 ---------- */
.prose {
  max-width: 72ch;
  padding: clamp(24px, 3.4vw, 56px);
  background: var(--cream-100);
  border: 1px solid var(--line-300);
  border-radius: 2px;
  color: var(--ink-900);
}

.prose > * + * { margin-top: 1.1em; }

.prose h2 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  letter-spacing: 0.02em;
  margin-top: 2em;
}

.prose h3 {
  font-size: 1.15rem;
  letter-spacing: 0.03em;
  margin-top: 1.6em;
}

.prose p { line-height: 1.85; }

.prose ul { padding-left: 0; }
.prose li {
  position: relative;
  padding-left: 20px;
  line-height: 1.85;
}
.prose li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--coral-500);
}

.prose a {
  text-decoration: underline;
  text-decoration-color: var(--electric-500);
  text-underline-offset: 3px;
}

/* ---------- 10. 横向卡片带 ---------- */
.card-band {
  display: flex;
  gap: clamp(14px, 1.6vw, 22px);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 4px 4px 20px;
  scrollbar-width: thin;
  scrollbar-color: var(--line-300) transparent;
  -webkit-overflow-scrolling: touch;
}

.card-band__item {
  flex: 0 0 clamp(258px, 30vw, 400px);
  scroll-snap-align: start;
  padding: clamp(18px, 2vw, 26px);
  background: var(--cream-100);
  border: 1px solid var(--line-300);
  border-radius: 2px;
  box-shadow: 0 1px 0 rgba(7, 26, 43, 0.04), 0 22px 40px -38px rgba(7, 26, 43, 0.7);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.card-band__item:hover,
.card-band__item:focus-within {
  transform: translateY(-2px);
  border-color: var(--electric-500);
  box-shadow: 0 1px 0 rgba(7, 26, 43, 0.06), 0 28px 44px -32px rgba(7, 26, 43, 0.55);
}

/* ---------- 11. 图片容器基础规则 ---------- */
.media-frame {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line-300);
  border-radius: 2px;
  background: linear-gradient(135deg, var(--abyss-900) 0%, var(--abyss-700) 58%, #123A52 100%);
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: auto -12% -34% -12%;
  height: 62%;
  background: radial-gradient(60% 100% at 32% 100%, rgba(22, 217, 209, 0.35), transparent 72%);
  pointer-events: none;
  z-index: 1;
}

.media-frame img {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.media-frame__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-600);
}

/* ---------- 12. 跳过导航 ---------- */
.skip-link {
  position: fixed;
  top: -90px;
  left: 12px;
  z-index: 300;
  padding: 12px 18px;
  border-radius: 2px;
  background: var(--electric-500);
  color: var(--abyss-900);
  font-weight: 700;
  font-size: 14px;
  transition: top 0.2s ease;
}

.skip-link:focus { top: 12px; }

/* ============================================================
   13. 头部
   ============================================================ */
.desk-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 120;
  color: var(--cream-100);
  background: linear-gradient(180deg, rgba(7, 26, 43, 0.94) 0%, rgba(7, 26, 43, 0.74) 58%, rgba(7, 26, 43, 0) 100%);
  transition: background-color 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.desk-header[data-state="solid"] {
  background: rgba(7, 26, 43, 0.97);
  border-bottom: 1px solid rgba(22, 217, 209, 0.42);
  box-shadow: 0 14px 34px -22px rgba(7, 26, 43, 0.9);
}

.desk-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: var(--electric-500);
  transform: scaleX(var(--desk-progress, 0));
  transform-origin: left center;
  opacity: 0.35;
  transition: transform 0.12s linear, opacity 0.3s ease;
  pointer-events: none;
}

.desk-header[data-state="solid"] .desk-progress { opacity: 1; }

.desk-header__rail {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: var(--grid-max);
  margin-inline: auto;
  padding: 8px var(--edge) 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: rgba(246, 241, 231, 0.7);
}

.desk-header__stamp { white-space: nowrap; }

.desk-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  color: rgba(201, 251, 247, 0.86);
}

.desk-status__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--electric-500);
  box-shadow: 0 0 0 4px rgba(22, 217, 209, 0.16);
  flex: 0 0 auto;
}

.desk-header__utility {
  color: rgba(246, 241, 231, 0.7);
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(246, 241, 231, 0.28);
  transition: color 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}

.desk-header__utility:hover {
  color: var(--electric-500);
  border-bottom-color: var(--electric-500);
}

.desk-header__bar {
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 26px);
  max-width: var(--grid-max);
  margin-inline: auto;
  padding-inline: var(--edge);
  min-height: 76px;
}

/* 品牌 */
.desk-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 6px 0;
  flex: 0 0 auto;
}

.desk-brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--electric-500);
  border-radius: 2px;
  color: var(--electric-500);
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  line-height: 1;
}

.desk-brand__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.desk-brand__name {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--white);
  line-height: 1.2;
}

.desk-brand__tag {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: rgba(201, 251, 247, 0.66);
  line-height: 1.3;
}

.desk-brand--footer .desk-brand__name { font-size: clamp(17px, 1.6vw, 20px); }
.desk-brand--footer .desk-brand__mark { width: 40px; height: 40px; font-size: 21px; }

/* 移动菜单按钮 */
.desk-navToggle {
  display: none;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  padding: 10px 14px;
  border: 1px solid rgba(246, 241, 231, 0.35);
  border-radius: 2px;
  color: var(--cream-100);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.desk-navToggle:hover,
.desk-navToggle[aria-expanded="true"] {
  border-color: var(--electric-500);
  color: var(--electric-500);
}

.desk-navToggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 12px;
  flex: 0 0 auto;
}

.desk-navToggle__bars::before,
.desk-navToggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: transform 0.25s ease, top 0.25s ease, bottom 0.25s ease;
}

.desk-navToggle__bars::before { top: 1px; }
.desk-navToggle__bars::after { bottom: 1px; }

.desk-navToggle[aria-expanded="true"] .desk-navToggle__bars::before {
  top: 5px;
  transform: rotate(45deg);
}
.desk-navToggle[aria-expanded="true"] .desk-navToggle__bars::after {
  bottom: 5px;
  transform: rotate(-45deg);
}

.desk-navToggle__label { line-height: 1; }

/* 导航 */
.desk-nav {
  display: flex;
  align-items: center;
  gap: clamp(2px, 1vw, 10px);
  margin-left: auto;
}

.desk-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.desk-nav__item { display: block; }

.desk-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 10px 12px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: rgba(246, 241, 231, 0.8);
  white-space: nowrap;
  transition: color 0.2s ease;
}

.desk-nav__link::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 4px;
  height: 2px;
  background: var(--electric-500);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.25s ease;
}

.desk-nav__link:hover { color: var(--white); }
.desk-nav__link:hover::after { transform: scaleX(1); }

.desk-nav__num {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: rgba(201, 251, 247, 0.5);
  transition: color 0.2s ease;
}

.desk-nav__link[aria-current="page"] { color: var(--white); }
.desk-nav__link[aria-current="page"] .desk-nav__num { color: var(--coral-500); }
.desk-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--coral-500);
}

.desk-nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: clamp(6px, 1.4vw, 18px);
  padding: 11px 18px;
  border: 1px solid var(--electric-500);
  border-radius: 2px;
  background: var(--electric-500);
  color: var(--abyss-900);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.desk-nav__cta::after { content: "→"; font-family: var(--font-mono); }

.desk-nav__cta:hover {
  background: var(--electric-100);
  border-color: var(--electric-100);
}

@media (max-width: 1120px) {
  .desk-nav__link { padding: 10px 8px; font-size: 13px; }
  .desk-nav__link::after { left: 8px; right: 8px; }
  .desk-nav__cta { padding: 10px 14px; font-size: 13px; }
}

/* ---------- 移动端头部 ---------- */
@media (max-width: 980px) {
  :root { --desk-header-h: 92px; }

  .desk-header__bar { min-height: 64px; }

  .desk-navToggle { display: inline-flex; }

  .desk-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-height: calc(100vh - var(--desk-header-h));
    overflow-y: auto;
    padding: 6px var(--edge) 26px;
    background: var(--abyss-900);
    border-top: 1px solid rgba(246, 241, 231, 0.14);
    border-bottom: 1px solid rgba(22, 217, 209, 0.38);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    pointer-events: none;
    transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s ease;
  }

  .desk-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
  }

  .desk-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .desk-nav__link {
    display: flex;
    align-items: baseline;
    padding: 16px 4px;
    font-size: 16px;
    border-bottom: 1px solid rgba(246, 241, 231, 0.1);
  }

  .desk-nav__link::after {
    left: 4px;
    right: auto;
    width: 28px;
    bottom: 9px;
  }

  .desk-nav__cta {
    margin: 18px 0 0;
    justify-content: center;
    padding: 14px 18px;
    font-size: 15px;
  }

  .desk-header__stamp { display: none; }
}

@media (max-width: 620px) {
  .desk-header__rail {
    padding-top: 6px;
    font-size: 10px;
    letter-spacing: 0.1em;
  }
  .desk-brand__tag { display: none; }
  .desk-brand__name { font-size: 15.5px; }
  .desk-brand__mark { width: 30px; height: 30px; font-size: 16px; }
  .desk-navToggle { padding: 9px 11px; }
  .desk-navToggle__label { display: none; }
}

/* ============================================================
   14. 页脚
   ============================================================ */
.desk-footer {
  position: relative;
  margin-top: clamp(48px, 7vw, 110px);
  background: var(--abyss-900);
  color: var(--cream-100);
  border-top: 1px solid var(--abyss-700);
  overflow: hidden;
}

.desk-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--electric-500) 0%, var(--coral-500) 52%, rgba(255, 107, 74, 0) 88%);
}

.desk-footer__wrap {
  max-width: var(--grid-max);
  margin-inline: auto;
  padding: clamp(40px, 5vw, 72px) var(--edge) clamp(20px, 3vw, 34px);
}

.desk-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr) auto;
  gap: clamp(18px, 3vw, 40px);
  align-items: end;
  padding-bottom: clamp(24px, 3vw, 40px);
  border-bottom: 1px solid rgba(246, 241, 231, 0.14);
}

.desk-footer__top .btn { justify-self: end; }

.desk-footer__lede {
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(220, 230, 236, 0.8);
}

.desk-footer__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)) minmax(0, 1.3fr);
  gap: clamp(22px, 3vw, 40px);
  padding-block: clamp(28px, 3.6vw, 48px);
}

.desk-footer__col { min-width: 0; }

.desk-footer__colTitle {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--white);
}

.desk-footer__colNum {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--electric-500);
}

.desk-footer__list {
  display: grid;
  gap: 10px;
}

.desk-footer__link {
  position: relative;
  display: inline-block;
  padding-block: 2px;
  font-size: 14.5px;
  line-height: 1.6;
  color: rgba(220, 230, 236, 0.82);
  transition: color 0.2s ease;
}

.desk-footer__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--electric-500);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.25s ease;
}

.desk-footer__link:hover { color: var(--white); }
.desk-footer__link:hover::after { transform: scaleX(1); }

.desk-footer__contact {
  display: grid;
  gap: 14px;
}

.desk-footer__label {
  display: block;
  margin-bottom: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(201, 251, 247, 0.62);
}

.desk-footer__value {
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--cream-100);
  overflow-wrap: anywhere;
}

.desk-footer__value--num {
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
}

.desk-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 26px;
  margin-top: clamp(18px, 3vw, 30px);
  padding: 18px clamp(16px, 2vw, 26px);
  border-radius: 2px;
  background: var(--cream-100);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.desk-footer__copy { font-weight: 500; }

.desk-footer__icp { color: var(--ink-600); }

.desk-footer__fine {
  flex: 1 1 100%;
  padding-top: 12px;
  border-top: 1px solid rgba(36, 28, 24, 0.12);
  font-family: var(--font-sans);
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--ink-600);
}

@media (max-width: 980px) {
  .desk-footer__top {
    grid-template-columns: minmax(0, 1fr);
    align-items: start;
  }
  .desk-footer__top .btn { justify-self: start; }
  .desk-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  .desk-footer__grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
  }
  .desk-footer__lede { font-size: 14px; }
}

/* ============================================================
   15. 滚动显现协议
   ============================================================ */
.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.has-js [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* ============================================================
   16. 降噪与打印
   ============================================================ */
@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;
  }

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

  .card-band__item:hover,
  .card-band__item:focus-within {
    transform: none;
  }

  .desk-progress { transition: none; }
}

@media print {
  .desk-header,
  .desk-footer,
  .skip-link,
  .desk-navToggle { display: none !important; }

  body {
    background: none;
    color: #000;
  }
}