/* =========================================================
   艾尚电子站 · 共享外壳样式 /assets/site.css
   侧边轨道 · 分屏 · 珠宝色分区 · 等宽状态标注
   ========================================================= */

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

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

body,
h1, h2, h3, h4, h5, h6,
p, figure, blockquote, dl, dd, ul, ol { margin: 0; }

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

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

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

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

table { border-collapse: collapse; width: 100%; }

input, textarea, select { font: inherit; color: inherit; }

code, kbd, samp, pre { font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace; }

/* ---------- 2. Tokens ---------- */
:root {
  /* 品牌色 */
  --c-blue: #0B3A6E;
  --c-blue-mid: #0F5FA8;
  --c-blue-deep: #082E52;
  --c-blue-ink: #062741;
  --c-teal: #063B3A;
  --c-indigo: #2B1E5A;
  --c-wine: #6E1F3A;
  --c-signal: #FF6B2C;
  --c-signal-soft: #FF8149;
  --c-cyan: #2BE4D0;
  --c-cloud: #F4F7FB;
  --c-mist: #C9D6E4;
  --c-ink: #0A1220;

  /* 语义色 */
  --c-glass: rgba(255, 255, 255, 0.14);
  --c-line: rgba(10, 18, 32, 0.12);
  --c-line-light: rgba(244, 247, 251, 0.16);

  /* 字体 */
  --font-display: "Barlow Condensed", "HarmonyOS Sans SC", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;

  /* 尺度 */
  --rail-w: 268px;
  --topbar-h: 64px;
  --gutter: clamp(16px, 4vw, 28px);
  --radius-lg: 22px;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow-soft: 0 18px 44px rgba(7, 32, 61, 0.12);
  --shadow-deep: 0 24px 60px rgba(6, 20, 38, 0.32);

  /* 动效 */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur: 200ms;
}

/* ---------- 3. 中文排版基底 ---------- */
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-ink);
  background-color: var(--c-cloud);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.12;
  color: var(--c-blue-ink);
}

h1 { font-size: clamp(34px, 5.2vw, 62px); }
h2 { font-size: clamp(26px, 3.4vw, 40px); }
h3 { font-size: clamp(20px, 2.2vw, 26px); }
h4 { font-size: clamp(17px, 1.6vw, 20px); }

p { max-width: 68ch; }

strong, b { font-weight: 700; }

::selection {
  background: rgba(43, 228, 208, 0.4);
  color: var(--c-ink);
}

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

main:focus { outline: none; }

@media (min-width: 1200px) {
  body { padding-left: var(--rail-w); }
}

/* ---------- 4. 无障碍跳转 ---------- */
.as-skip {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 12px 22px;
  border-radius: 999px;
  background: var(--c-ink);
  color: var(--c-cloud);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  box-shadow: var(--shadow-deep);
  transform: translateY(-200%);
  transition: transform 180ms var(--ease);
}

.as-skip:focus,
.as-skip:focus-visible {
  transform: translateY(0);
}

/* ---------- 5. 头部 / 侧边轨道 ---------- */
.as-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 60;
  color: var(--c-cloud);
  background-color: var(--c-blue);
  background-image:
    radial-gradient(130% 55% at 0% 0%, rgba(43, 228, 208, 0.16), transparent 62%),
    linear-gradient(178deg, #0B3A6E 0%, #082E52 58%, #062741 100%);
  box-shadow: 0 10px 30px rgba(6, 20, 38, 0.18);
}

.as-header::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    135deg,
    rgba(244, 247, 251, 0.055) 0 1px,
    transparent 1px 9px
  );
  opacity: 0.9;
}

.as-header > * { position: relative; }

.as-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 95;
  background: rgba(10, 18, 32, 0.18);
  pointer-events: none;
}

.as-progress__bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--c-cyan), var(--c-signal));
  transition: width 120ms linear;
}

.as-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px var(--gutter);
}

/* 品牌 */
.as-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.as-brand__mark {
  position: relative;
  flex: none;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background-image: linear-gradient(145deg, #2BE4D0 0%, #0F5FA8 52%, #0B3A6E 100%);
  box-shadow:
    inset 0 0 0 1px rgba(244, 247, 251, 0.22),
    0 8px 18px rgba(4, 20, 40, 0.45);
}

.as-brand__mark::before {
  content: "";
  position: absolute;
  inset: 7px;
  background: var(--c-signal);
  clip-path: polygon(0 0, 100% 0, 100% 34%, 34% 34%, 34% 100%, 0 100%);
}

.as-brand__mark::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1px solid rgba(244, 247, 251, 0.26);
}

.as-brand__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.as-brand__name {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: #FFFFFF;
}

.as-brand__tag {
  font-family: var(--font-mono);
  font-size: 10.5px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: rgba(244, 247, 251, 0.62);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 26ch;
}

/* 移动导航按钮 */
.as-navtoggle {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  flex: none;
  padding: 9px 15px;
  border-radius: 999px;
  border: 1px solid rgba(244, 247, 251, 0.28);
  background: rgba(255, 255, 255, 0.10);
  color: var(--c-cloud);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.as-navtoggle:hover {
  background: rgba(43, 228, 208, 0.18);
  border-color: rgba(43, 228, 208, 0.5);
}

.as-navtoggle__box {
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
  width: 18px;
  height: 12px;
}

.as-navtoggle__box span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 200ms var(--ease), opacity 200ms var(--ease);
}

.as-navtoggle[aria-expanded="true"] .as-navtoggle__box span:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}

.as-navtoggle[aria-expanded="true"] .as-navtoggle__box span:nth-child(2) {
  opacity: 0;
}

.as-navtoggle[aria-expanded="true"] .as-navtoggle__box span:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

.as-navtoggle__label { line-height: 1; }

/* 导航（移动端 = 抽屉） */
.as-nav {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(342px, 88vw);
  z-index: 80;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 24px 20px 30px;
  overflow-y: auto;
  overscroll-behavior: contain;
  color: var(--c-cloud);
  background-color: var(--c-blue-ink);
  background-image:
    radial-gradient(120% 45% at 100% 0%, rgba(43, 228, 208, 0.18), transparent 62%),
    radial-gradient(90% 50% at 0% 100%, rgba(110, 31, 58, 0.42), transparent 68%),
    linear-gradient(180deg, #0B3A6E 0%, #062741 100%);
  box-shadow: -24px 0 64px rgba(6, 20, 38, 0.55);
  transform: translateX(102%);
  transition: transform 220ms var(--ease);
}

.as-nav[data-open] { transform: translateX(0); }

.as-nav__title {
  padding: 0 12px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(244, 247, 251, 0.46);
}

.as-nav__list {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.as-nav__item { display: block; }

.as-nav__link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 12px;
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  font-size: 15.5px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: rgba(244, 247, 251, 0.74);
  transition:
    color 140ms var(--ease),
    background-color 140ms var(--ease),
    border-color 140ms var(--ease);
}

.as-nav__link:hover {
  color: #FFFFFF;
  background-color: rgba(43, 228, 208, 0.12);
  border-left-color: rgba(43, 228, 208, 0.6);
}

.as-nav__link[aria-current="page"] {
  color: #FFFFFF;
  font-weight: 700;
  background-image: linear-gradient(90deg, rgba(43, 228, 208, 0.24), rgba(43, 228, 208, 0));
  background-color: transparent;
  border-left-color: var(--c-cyan);
}

.as-nav__idx {
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: rgba(244, 247, 251, 0.34);
}

.as-nav__link:hover .as-nav__idx { color: rgba(43, 228, 208, 0.8); }

.as-nav__link[aria-current="page"] .as-nav__idx { color: var(--c-cyan); }

.as-nav__foot {
  margin-top: auto;
  padding-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.as-nav__meta {
  padding: 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.7;
  letter-spacing: 0.06em;
  color: rgba(244, 247, 251, 0.5);
  max-width: none;
}

.as-nav__cta { width: 100%; }

.as-scrim {
  position: fixed;
  inset: 0;
  z-index: 70;
  background-color: rgba(6, 20, 38, 0.6);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 200ms var(--ease), visibility 0s linear 200ms;
}

.as-scrim[data-open] {
  opacity: 1;
  visibility: visible;
  transition: opacity 200ms var(--ease), visibility 0s linear 0s;
}

@media (max-width: 1199px) {
  body[data-nav-locked] { overflow: hidden; }
}

/* 桌面端：常驻左侧轨道 */
@media (min-width: 1200px) {
  .as-header {
    position: fixed;
    inset: 0 auto 0 0;
    width: var(--rail-w);
    display: flex;
    flex-direction: column;
    box-shadow: 14px 0 40px rgba(6, 20, 38, 0.14);
  }

  .as-progress { height: 3px; }

  .as-header__bar {
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 0;
    padding: 30px 24px 20px;
  }

  .as-brand { width: 100%; }

  .as-brand__name { font-size: 22px; }

  .as-brand__tag { max-width: 100%; }

  .as-navtoggle { display: none; }

  .as-nav {
    position: static;
    width: auto;
    transform: none;
    overflow: visible;
    box-shadow: none;
    background: none;
    padding: 0 14px 0;
    flex: 1 1 auto;
    transition: none;
  }

  .as-nav__title { padding: 4px 12px 10px; }

  .as-nav__link { padding: 10px 12px; font-size: 15px; }

  .as-nav__foot { padding: 22px 10px 24px; }

  .as-nav__meta { padding: 0; }

  .as-scrim { display: none; }
}

/* ---------- 6. 页脚 ---------- */
.as-footer {
  position: relative;
  margin-top: clamp(48px, 7vw, 96px);
  padding: clamp(42px, 6vw, 76px) 0 0;
  overflow: hidden;
  color: var(--c-cloud);
  background-color: var(--c-blue-ink);
  background-image:
    radial-gradient(90% 70% at 88% 0%, rgba(43, 228, 208, 0.16), transparent 58%),
    radial-gradient(70% 60% at 0% 100%, rgba(110, 31, 58, 0.42), transparent 62%),
    linear-gradient(165deg, #062741 0%, #0B3A6E 46%, #063B3A 100%);
}

.as-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    135deg,
    rgba(244, 247, 251, 0.04) 0 1px,
    transparent 1px 10px
  );
}

.as-footer > * { position: relative; }

.as-footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4.4vw, 56px);
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 clamp(20px, 4.5vw, 64px);
}

@media (min-width: 760px) {
  .as-footer__inner { grid-template-columns: 1.35fr 0.9fr 1.15fr; }
}

.as-footer__lead { min-width: 0; }

.as-footer__brand {
  font-family: var(--font-display);
  font-size: clamp(21px, 2.4vw, 27px);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: #FFFFFF;
  max-width: none;
}

.as-footer__desc {
  margin-top: 14px;
  max-width: 34ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 247, 251, 0.7);
}

.as-footer__lead .as-btn { margin-top: 22px; }

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

.as-footer__h {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  line-height: 1.4;
  color: var(--c-cyan);
}

.as-footer__list {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.as-footer__link {
  display: inline-block;
  font-size: 15px;
  line-height: 1.65;
  color: rgba(244, 247, 251, 0.74);
  border-bottom: 1px solid transparent;
  transition: color 140ms var(--ease), border-color 140ms var(--ease);
}

.as-footer__link:hover {
  color: var(--c-cyan);
  border-bottom-color: rgba(43, 228, 208, 0.55);
}

.as-footer__meta {
  font-size: 13.5px;
  line-height: 1.6;
  color: rgba(244, 247, 251, 0.58);
  max-width: none;
}

.as-footer__mono {
  display: block;
  margin-top: 1px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  line-height: 1.7;
  color: rgba(244, 247, 251, 0.92);
  word-break: break-all;
}

.as-footer__base {
  margin-top: clamp(32px, 4vw, 54px);
  padding: 20px clamp(20px, 4.5vw, 64px) 26px;
  border-top: 1px solid rgba(244, 247, 251, 0.14);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 26px;
  font-size: 13px;
  color: rgba(244, 247, 251, 0.56);
}

.as-footer__copy {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(244, 247, 251, 0.6);
  max-width: none;
}

.as-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.as-footer__legal .as-footer__link { font-size: 13px; }

.as-footer__icp {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(244, 247, 251, 0.48);
  max-width: none;
}

@media (min-width: 900px) {
  .as-footer__base {
    max-width: 1180px;
    margin-left: auto;
    margin-right: auto;
  }
}

/* ---------- 7. 通用布局 ---------- */
.as-container {
  width: 100%;
  max-width: 1180px;
  margin-inline: auto;
  padding-inline: clamp(20px, 4.5vw, 64px);
}

.as-section { padding-block: clamp(40px, 6vw, 88px); }

.as-section--tight { padding-block: clamp(26px, 4vw, 52px); }

.as-grid {
  display: grid;
  gap: clamp(16px, 2.2vw, 28px);
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .as-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 880px) {
  .as-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* ---------- 8. 通用按钮 ---------- */
.as-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0.01em;
  text-align: center;
  transition:
    transform 140ms var(--ease),
    background-color 140ms var(--ease),
    border-color 140ms var(--ease),
    color 140ms var(--ease),
    box-shadow 140ms var(--ease);
}

.as-btn:hover { transform: translateY(-1px); }

.as-btn:active { transform: translateY(0); }

.as-btn--signal {
  background-color: var(--c-signal);
  color: var(--c-ink);
  box-shadow: 0 12px 26px rgba(255, 107, 44, 0.28);
}

.as-btn--signal:hover {
  background-color: var(--c-signal-soft);
  box-shadow: 0 16px 32px rgba(255, 107, 44, 0.34);
}

.as-btn--ghost {
  background-color: transparent;
  border-color: rgba(244, 247, 251, 0.32);
  color: var(--c-cloud);
}

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

.as-btn--ink {
  background-color: var(--c-blue);
  color: #FFFFFF;
  box-shadow: 0 12px 26px rgba(11, 58, 110, 0.24);
}

.as-btn--ink:hover { background-color: #0d4a8a; }

.as-btn--cyan {
  background-color: var(--c-cyan);
  color: #04211F;
  box-shadow: 0 12px 26px rgba(43, 228, 208, 0.24);
}

.as-btn--cyan:hover { background-color: #4bf0e0; }

.as-btn--sm { padding: 9px 17px; font-size: 15px; }

/* ---------- 9. 文本与标签组件 ---------- */
.as-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-blue);
}

.as-eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  flex: none;
  background-color: var(--c-signal);
}

.as-eyebrow--light { color: var(--c-cyan); }

.as-text-mono {
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.as-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- 10. 面包屑 ---------- */
.as-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding-block: 20px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: rgba(10, 18, 32, 0.55);
}

.as-breadcrumb a {
  color: var(--c-blue);
  border-bottom: 1px solid rgba(11, 58, 110, 0.28);
  transition: color 140ms var(--ease), border-color 140ms var(--ease);
}

.as-breadcrumb a:hover {
  color: var(--c-signal);
  border-bottom-color: var(--c-signal);
}

.as-breadcrumb__sep { color: rgba(10, 18, 32, 0.28); }

.as-breadcrumb__current { color: rgba(10, 18, 32, 0.8); }

/* ---------- 11. 内容层 ---------- */
.as-panel {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.28);
  background-color: var(--c-glass);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  backdrop-filter: blur(14px) saturate(1.2);
  color: var(--c-cloud);
}

.as-card {
  position: relative;
  border-radius: var(--radius-lg);
  background-color: #FFFFFF;
  border: 1px solid rgba(201, 214, 228, 0.6);
  padding: clamp(20px, 2.6vw, 30px);
  box-shadow: var(--shadow-soft);
}

/* ---------- 12. 图片容器基础规则 ---------- */
.as-media {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  border-radius: var(--radius-lg);
  aspect-ratio: 16 / 10;
  background-color: #0E2B4D;
  background-image: linear-gradient(150deg, #123A63 0%, #0A1C33 70%);
}

.as-media > img,
.as-media > picture > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.as-media--wide { aspect-ratio: 21 / 8; }
.as-media--tall { aspect-ratio: 3 / 4; }
.as-media--square { aspect-ratio: 1 / 1; }

.as-media--grid::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(43, 228, 208, 0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(43, 228, 208, 0.18) 1px, transparent 1px);
  background-size: 32px 32px;
  -webkit-mask-image: radial-gradient(120% 100% at 18% 0%, #000 0%, transparent 78%);
  mask-image: radial-gradient(120% 100% at 18% 0%, #000 0%, transparent 78%);
}

.as-media__tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  line-height: 1.5;
  color: var(--c-cloud);
  background-color: rgba(10, 18, 32, 0.62);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

/* ---------- 13. 显现（页面阶段用 data-reveal 启用） ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 460ms var(--ease), transform 460ms var(--ease);
  will-change: opacity, transform;
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: none;
  will-change: auto;
}

/* ---------- 14. 打印 ---------- */
@media print {
  .as-header,
  .as-footer,
  .as-skip,
  .as-progress { display: none !important; }

  body {
    padding-left: 0 !important;
    color: #000;
    background: #fff;
  }

  a { text-decoration: underline; color: #000; }

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

/* ---------- 15. 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .as-nav { transition: none; }
  .as-scrim { transition: none; }
  .as-progress__bar { transition: none; }
  .as-btn:hover { transform: none; }

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