/* ============================================================
   archip 官网公共样式 · 三页共享（index / bluetooth / edge-ai）
   v2 · Apple 设计语言优化：大留白 / 超大标题负字距 / 去边框阴影卡片 /
       毛玻璃导航 / 系统字体（品牌 Space Grotesk 仅用于英文标识与编号）
   品牌五色：#EE3560 主 / #E02A55 深档 / #361420 文字 / #FFEFEA 杏粉 / #FFF9F7 暖白
   ============================================================ */
@font-face {
  font-family: "Space Grotesk";
  src: url("../archip-logo/fonts/SpaceGrotesk-latin.woff2") format("woff2");
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}
:root {
  --coral: #EE3560;        /* 主色：内弧 / 大字强调 */
  --coral-deep: #E02A55;   /* 深档：小字强调 / 主按钮底 */
  --ink: #361420;          /* 文字深酒红 */
  --ink-70: rgba(54, 20, 32, .72);
  --ink-55: rgba(54, 20, 32, .55);
  --ink-40: rgba(54, 20, 32, .40);
  --ink-12: rgba(54, 20, 32, .12);
  --ink-07: rgba(54, 20, 32, .07);
  --blush: #FFEFEA;        /* 品牌浅底杏粉 */
  --paper: #FFF9F7;        /* 页面暖白底 */
  --white: #FFFFFF;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
  --font-en: "Space Grotesk", -apple-system, "Segoe UI", sans-serif;
  --shadow-card: 0 6px 32px rgba(54, 20, 32, .08);
  --shadow-card-hover: 0 14px 44px rgba(54, 20, 32, .13);
  --ease-out: cubic-bezier(.22, .7, .3, 1);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
html, body { overflow-x: clip; }
body {
  font-family: var(--font);
  font-size: 17px;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  line-height: 1.65;
  letter-spacing: .01em;
}
::selection { background: var(--coral); color: #fff; }
p { text-wrap: pretty; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img, svg { display: block; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 32px; }
.en { letter-spacing: .14em; font-family: var(--font-en); }

/* ========== 顶部导航（毛玻璃 · Apple 风） ========== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  height: 64px;
  background: rgba(255, 255, 255, .68);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(54, 20, 32, .05);
}
.nav.scrolled { box-shadow: 0 1px 0 rgba(54, 20, 32, .06); }
.nav-inner {
  max-width: 1080px; margin: 0 auto; padding: 0 32px;
  height: 100%; display: flex; align-items: center; justify-content: space-between;
}
.brand-lockup { display: inline-flex; align-items: baseline; }
.brand-cn {
  font-size: 14px; color: var(--ink-55); letter-spacing: .14em;
  padding-left: 14px; margin-left: 12px;
  border-left: 1px solid var(--ink-12);
}
.wordmark {
  font-family: var(--font-en);
  font-weight: 600; font-size: 24px; letter-spacing: .045em;
  color: var(--ink); display: inline-flex; align-items: baseline; line-height: 1;
}
.i-dot {
  height: .8em; width: auto; display: inline-block;
  margin: 0 .06em; transform: translateY(.05em);
}
.nav-links { display: flex; align-items: center; gap: 36px; }
.nav-links a {
  font-size: 15px; color: var(--ink-70); letter-spacing: .01em;
  transition: color .2s ease;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--coral-deep); font-weight: 600; }
.nav-cta {
  display: inline-block;
  font-size: 14px; font-weight: 600;
  color: #fff; background: var(--coral-deep);
  padding: 8px 22px; border-radius: 999px;
  transition: background .25s ease, transform .25s ease;
}
.nav-cta:hover { background: var(--coral); transform: scale(1.03); }

/* ========== Hero：涟漪星火 ========== */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid; place-items: center;
  padding: 128px 24px 112px;
  text-align: center;
  background: var(--paper);
}
.hero::before {
  content: ""; position: absolute; left: 50%; top: 44%;
  width: 880px; height: 880px; transform: translate(-50%, -50%);
  background: radial-gradient(closest-side, rgba(255, 239, 234, .95), rgba(255, 239, 234, 0));
  pointer-events: none;
}
.hero-inner { position: relative; display: flex; flex-direction: column; align-items: center; }
.eyebrow {
  font-family: var(--font-en);
  font-size: 13px; font-weight: 700; letter-spacing: .32em;
  color: var(--coral-deep); text-indent: .32em;
}
.mark-wrap {
  position: relative;
  width: clamp(208px, 23vw, 300px);
  margin: 40px 0 44px;
}
.mark { width: 100%; height: auto; display: block; overflow: visible; position: relative; z-index: 1; }

/* 入场动画：星芒先点亮 → 内弧荡开 → 外弧荡开 */
.sg-star {
  transform-box: fill-box; transform-origin: 50% 50%;
  animation: starPop .62s cubic-bezier(.3, 1.45, .5, 1) .18s both, starPulse 4.2s ease-in-out 2.6s infinite;
}
.sg-arc-in, .sg-arc-out { stroke-dasharray: 100; stroke-dashoffset: 100; }
.sg-arc-in  { animation: drawIn  .72s var(--ease-out) .62s both; }
.sg-arc-out { animation: drawOut .72s var(--ease-out) .95s both; }
@keyframes starPop {
  0%   { opacity: 0; transform: scale(.15) rotate(-24deg); }
  60%  { opacity: 1; }
  100% { opacity: 1; transform: scale(1) rotate(0deg); }
}
@keyframes drawIn  { from { stroke-dashoffset: 100; opacity: 0; } to { stroke-dashoffset: 0; opacity: 1; } }
@keyframes drawOut { from { stroke-dashoffset: 100; opacity: 0; } to { stroke-dashoffset: 0; opacity: .4; } }
@keyframes starPulse {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.045); }
}
.ring {
  position: absolute; left: 31.5%; top: 68.5%;
  width: 170px; height: 170px; border-radius: 50%;
  opacity: 0;
  animation: ring 4.8s cubic-bezier(.25, .6, .3, 1) infinite;
}
.ring.r1 { border: 1.5px solid rgba(238, 53, 96, .5);  animation-delay: 2.1s; }
.ring.r2 { border: 1.5px solid rgba(238, 53, 96, .36); animation-delay: 3.7s; }
.ring.r3 { border: 1.5px solid rgba(238, 53, 96, .26); animation-delay: 5.3s; }
@keyframes ring {
  0%   { transform: translate(-50%, -50%) scale(.4);  opacity: .55; }
  70%  { opacity: .13; }
  100% { transform: translate(-50%, -50%) scale(2.5); opacity: 0; }
}

/* 宣言与 CTA 依次浮现（Apple 式大标题：负字距 + 大字号） */
.fx { opacity: 0; transform: translateY(26px); animation: rise .85s var(--ease-out) var(--d, 0s) both; }
@keyframes rise { to { opacity: 1; transform: none; } }
.hero h1 {
  font-size: clamp(42px, 5.2vw, 72px);
  line-height: 1.12; font-weight: 700; letter-spacing: -.015em;
  max-width: 15em;
}
.hero h1 .accent { color: var(--coral); }
.hero-sub {
  margin: 26px auto 0; max-width: 640px;
  font-size: 19px; line-height: 1.65; color: var(--ink-70);
  letter-spacing: .01em;
}
.cta-row { display: flex; gap: 16px; justify-content: center; margin-top: 44px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 17px; font-weight: 600;
  padding: 15px 38px; border-radius: 999px; cursor: pointer;
  transition: transform .3s var(--ease-out), background .25s ease, color .25s ease;
}
.btn-primary {
  color: #fff; background: var(--coral-deep);
}
.btn-primary:hover { background: var(--coral); transform: scale(1.03); }
.btn-ghost {
  color: var(--coral-deep); background: transparent;
  border: 1.5px solid rgba(224, 42, 85, .45);
}
.btn-ghost:hover { background: var(--blush); transform: scale(1.03); }

.scroll-cue {
  position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  opacity: 0; animation: rise .8s var(--ease-out) 2.4s both;
}
.scroll-cue small { font-size: 11px; letter-spacing: .3em; text-indent: .3em; color: var(--ink-55); }
.cue-line { position: relative; width: 1px; height: 42px; background: rgba(54, 20, 32, .16); overflow: hidden; }
.cue-line::after {
  content: ""; position: absolute; left: -2px; top: 0;
  width: 5px; height: 5px; border-radius: 50%; background: var(--coral);
  animation: cueDrop 2.2s ease-in-out infinite;
}
@keyframes cueDrop {
  0%   { transform: translateY(0);     opacity: 0; }
  25%  { opacity: 1; }
  100% { transform: translateY(40px);  opacity: 0; }
}

/* ========== 深色 Hero（首节增强对比 · Apple 经典开场：深色 hero + 浅色章节） ========== */
.hero.dark { background: #1C0C13; }
.hero.dark::before {
  background: radial-gradient(closest-side, rgba(238, 53, 96, .20), rgba(238, 53, 96, 0));
}
.hero.dark h1 { color: #FFF6F0; }
.hero.dark h1 .accent { color: #FF6B8A; }
.hero.dark .hero-sub { color: rgba(255, 246, 240, .8); }
.hero.dark .sg-star { filter: drop-shadow(0 0 24px rgba(238, 53, 96, .7)); }
.hero.dark .btn-ghost {
  color: #FFB3C4; border-color: rgba(255, 179, 196, .5);
}
.hero.dark .btn-ghost:hover { background: rgba(238, 53, 96, .18); }
.hero.dark .scroll-cue small { color: rgba(255, 246, 240, .68); font-size: 12px; }
.hero.dark .cue-line { background: rgba(255, 246, 240, .25); }
.hero.dark .cue-line::after { background: #FF6B8A; }

/* 深色 hero 上的导航：未滚动时深色毛玻璃，滚入浅色区后切回白 */
.nav-on-dark:not(.scrolled) {
  background: rgba(28, 12, 19, .35);
  border-bottom-color: rgba(255, 246, 240, .08);
}
.nav-on-dark:not(.scrolled) .wordmark { color: #FFF6F0; }
.nav-on-dark:not(.scrolled) .brand-cn { color: rgba(255, 246, 240, .62); border-left-color: rgba(255, 246, 240, .22); }
.nav-on-dark:not(.scrolled) .nav-links a { color: rgba(255, 246, 240, .75); }
.nav-on-dark:not(.scrolled) .nav-links a:hover { color: #fff; }
.nav-on-dark:not(.scrolled) .nav-links a.active { color: #FFB3C4; }

/* ========== 板块通用（大留白） ========== */
section { position: relative; }
.sec { padding: 140px 0; }
.sec-kicker { display: flex; align-items: center; gap: 16px; margin-bottom: 24px; }
.sec-num {
  font-family: var(--font-en);
  font-weight: 700; font-size: 15px; letter-spacing: .2em;
  color: var(--coral-deep);
}
.sec-line { width: 40px; height: 1px; background: rgba(224, 42, 85, .4); }
.sec-label { font-size: 14px; letter-spacing: .22em; color: var(--ink-55); }
.sec h2 {
  font-size: clamp(36px, 3.4vw, 50px);
  font-weight: 700; letter-spacing: -.012em; line-height: 1.18;
}
.sec-lead { margin-top: 20px; font-size: 19px; line-height: 1.65; color: var(--ink-70); max-width: 620px; }

/* 滚动渐显（仅 JS 可用时启用） */
.js .reveal { opacity: 0; transform: translateY(30px); transition: opacity .75s ease var(--d, 0s), transform .75s var(--ease-out) var(--d, 0s); }
.js .reveal.in { opacity: 1; transform: none; }

/* 涟漪母题：板块角落极淡同心弧 */
.ghost-arc { position: absolute; pointer-events: none; }
.ghost-arc--sol { top: -150px; right: -130px; width: 460px; height: 460px; }
.ghost-arc--case { bottom: -170px; left: -140px; width: 500px; height: 500px; transform: rotate(180deg); }

/* ========== 方案矩阵卡片（无边框 · 大圆角 · 柔和阴影） ========== */
.group { margin-top: 64px; }
.group:first-of-type { margin-top: 72px; }
.group-head {
  display: flex; align-items: center; gap: 14px;
  margin-bottom: 32px;
}
.group-tag {
  font-family: var(--font-en);
  font-size: 13px; font-weight: 600; color: var(--coral-deep);
  border: 1.5px solid rgba(238, 53, 96, .4); border-radius: 8px;
  width: 28px; height: 28px; display: inline-flex; align-items: center; justify-content: center;
}
.group-head h3 { font-size: 24px; font-weight: 700; letter-spacing: -.008em; }
.group-head p { font-size: 15px; color: var(--ink-55); }
#solutions { background: var(--paper); overflow: hidden; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 24px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.card {
  background: var(--white); border-radius: 24px; overflow: hidden;
  display: flex; flex-direction: column;
  box-shadow: var(--shadow-card);
  transition: transform .35s var(--ease-out), box-shadow .35s ease;
}
.card:hover { transform: translateY(-5px) scale(1.012); box-shadow: var(--shadow-card-hover); }
.ph {
  position: relative; background: var(--blush);
  display: flex; align-items: center; justify-content: center;
}
.card .ph { height: 152px; }
.ph svg.icon { width: 64px; height: 64px; color: var(--coral); }
.ph svg.art-mini { width: 100%; height: 100%; display: block; }
.ph img.prod { width: 100%; height: 100%; object-fit: contain; background: #fff; display: block; filter: drop-shadow(0 6px 14px rgba(54, 20, 32, .10)); }
.card-body { padding: 22px 22px 24px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.card-body h3 { font-size: 18px; font-weight: 700; display: flex; align-items: center; gap: 9px; letter-spacing: -.005em; }
.card-body h3 svg { width: 19px; height: 19px; color: var(--coral); flex: none; }
.card-body p { font-size: 14px; color: var(--ink-70); flex: 1; line-height: 1.6; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-size: 12.5px; color: var(--ink-70); background: var(--blush);
  padding: 4px 12px; border-radius: 999px; white-space: nowrap;
}
.more-link {
  font-size: 13.5px; font-weight: 600; color: var(--coral-deep);
  display: inline-flex; align-items: center; gap: 6px;
}
.more-link::after { content: "→"; transition: transform .2s ease; }
.more-link:hover::after { transform: translateX(4px); }

/* ========== 落地案例 ========== */
#cases { background: var(--white); overflow: hidden; }
#about { background: var(--paper); }
.case {
  background: var(--white); border-radius: 28px; overflow: hidden;
  display: grid; grid-template-columns: 340px 1fr;
  box-shadow: var(--shadow-card);
  transition: transform .35s var(--ease-out), box-shadow .35s ease;
}
.case + .case { margin-top: 28px; }
.case:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.case .ph { height: auto; min-height: 100%; }
.case .ph svg.icon { width: 96px; height: 96px; color: var(--coral); }
.case-body { padding: 44px 48px; display: flex; flex-direction: column; gap: 14px; justify-content: center; }
.case-no { font-family: var(--font-en); font-size: 12.5px; font-weight: 600; color: var(--coral-deep); letter-spacing: .18em; }
.case-body h3 { font-size: 28px; font-weight: 700; letter-spacing: -.01em; }
.case-body > p { font-size: 17px; color: var(--ink-70); max-width: 38em; }

/* ========== 关于我们 ========== */
.about-in { display: grid; grid-template-columns: auto 1fr; gap: 56px; align-items: center; }
.about-mark { width: 150px; height: 150px; }
.about blockquote { font-size: clamp(26px, 2.6vw, 34px); font-weight: 700; line-height: 1.35; letter-spacing: -.012em; border: none; }
.about blockquote .accent { color: var(--coral); }
.about-sub { font-size: 17px; color: var(--ink-70); margin-top: 20px; max-width: 40em; }
.btn-sm {
  display: inline-flex; align-items: center; margin-top: 30px;
  font-size: 15px; font-weight: 600;
  background: var(--coral-deep); color: #fff;
  padding: 12px 30px; border-radius: 999px;
  transition: background .25s, transform .25s;
}
.btn-sm:hover { background: var(--coral); transform: scale(1.03); }

/* ========== 详情页 ========== */
.page-hero {
  position: relative; overflow: hidden;
  background: var(--paper);
  padding: 176px 0 96px;
}
.page-hero .wrap { position: relative; z-index: 1; }
.page-hero h1 {
  font-size: clamp(40px, 4.4vw, 62px);
  line-height: 1.12; font-weight: 700; letter-spacing: -.015em;
}
.page-hero h1 .accent { color: var(--coral); }
.page-lead { margin-top: 22px; font-size: 19px; line-height: 1.65; color: var(--ink-70); max-width: 640px; }
.breadcrumb { font-size: 13px; color: var(--ink-55); margin-bottom: 24px; display: flex; gap: 8px; }
.breadcrumb a:hover { color: var(--coral-deep); }

/* 芯片规格网格 */
.spec-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(232px, 1fr)); gap: 20px; margin-top: 52px; }
.spec {
  background: var(--white); border-radius: 20px;
  padding: 26px 24px 24px;
  box-shadow: var(--shadow-card);
  transition: transform .35s var(--ease-out), box-shadow .35s ease;
}
.spec:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.spec .v { font-family: var(--font-en); font-size: 30px; font-weight: 700; color: var(--coral-deep); letter-spacing: -.01em; line-height: 1.1; }
.spec .v small { font-size: 16px; font-weight: 600; color: var(--ink-55); margin-left: 3px; }
.spec .k { font-size: 15px; font-weight: 700; margin-top: 10px; letter-spacing: -.003em; }
.spec .d { font-size: 13px; color: var(--ink-55); margin-top: 5px; line-height: 1.55; }
.spec-note { margin-top: 26px; font-size: 13px; color: var(--ink-55); }
.chip-fig {
  margin-top: 52px; display: flex; gap: 20px; justify-content: center; flex-wrap: wrap;
}
.chip-fig figure { text-align: center; }
.chip-fig figure.banner { width: 100%; max-width: 760px; }
.chip-fig svg.art {
  width: 100%; height: auto; display: block;
  border-radius: 24px; box-shadow: var(--shadow-card);
}
.chip-fig figcaption { margin-top: 12px; font-size: 12.5px; color: var(--ink-55); letter-spacing: .06em; }

/* 方案详情区块（详情页用） */
.sol-block {
  display: grid; grid-template-columns: 360px 1fr; gap: 52px; align-items: center;
  padding: 64px 0;
  border-top: 1px solid var(--ink-07);
}
.sol-block:first-of-type { border-top: none; }
.sol-block .ph { height: 250px; border-radius: 24px; box-shadow: var(--shadow-card); overflow: hidden; }
.sol-block .ph svg.icon { width: 88px; height: 88px; }
.sol-block .idx { font-family: var(--font-en); font-size: 13px; font-weight: 700; letter-spacing: .2em; color: var(--coral-deep); }
.sol-block h3 { font-size: 28px; font-weight: 700; margin-top: 12px; letter-spacing: -.01em; }
.sol-block .desc { margin-top: 16px; font-size: 17px; line-height: 1.7; color: var(--ink-70); }
.sol-points { margin-top: 22px; display: grid; gap: 13px; }
.sol-points li { display: flex; gap: 12px; align-items: baseline; font-size: 15.5px; color: var(--ink-70); }
.ring-dot {
  flex: none; width: 9px; height: 9px; border-radius: 50%;
  border: 2px solid var(--coral); transform: translateY(-1px);
}

/* ========== 页脚 ========== */
.site-footer { position: relative; background: var(--blush); overflow: hidden; }
.foot-cta { text-align: center; padding: 110px 0 84px; }
.foot-cta h2 { font-size: clamp(30px, 3vw, 44px); font-weight: 700; letter-spacing: -.012em; }
.pill-pending {
  display: inline-block;
  font-size: 14px; font-weight: 600; letter-spacing: .08em;
  color: var(--coral-deep);
  border: 1.4px dashed rgba(224, 42, 85, .5);
  border-radius: 999px; padding: 7px 20px;
  background: rgba(255, 255, 255, .6);
}
.contact-rows {
  margin: 48px auto 0; max-width: 680px;
  display: grid; grid-template-columns: repeat(3, auto); justify-content: center; gap: 20px 56px;
}
.contact-rows dt { font-size: 13px; letter-spacing: .14em; color: var(--ink-55); margin-bottom: 9px; }
.contact-rows dd { font-size: 15.5px; font-weight: 600; }
.contact-rows a:hover { color: var(--coral-deep); }
.foot-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 44px;
  padding: 56px 0 48px;
  border-top: 1px solid rgba(224, 42, 85, .18);
}
.foot-brand .brand { margin-bottom: 14px; display: inline-flex; align-items: center; gap: 10px; }
.foot-brand .brand svg { width: 34px; height: 34px; }
.foot-name { font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.foot-desc { font-size: 13px; color: var(--ink-55); max-width: 24em; }
.foot-col h4 { font-family: var(--font-en); font-size: 12.5px; font-weight: 600; color: var(--coral-deep); letter-spacing: .14em; margin-bottom: 16px; }
.foot-col li { font-size: 14px; color: var(--ink-70); margin-bottom: 10px; }
.foot-col a:hover { color: var(--coral-deep); }
.foot-bar {
  border-top: 1px solid rgba(54, 20, 32, .1);
  display: flex; justify-content: center; gap: 8px; flex-wrap: wrap;
  padding-top: 18px; padding-bottom: 18px;
  font-size: 12.5px; color: var(--ink-55);
}
.foot-bar a:hover { color: var(--coral-deep); }

/* ========== 响应式 ========== */
@media (max-width: 1080px) {
  .grid-4, .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .case { grid-template-columns: 1fr; }
  .case .ph { height: 200px; }
  .case .ph svg.icon { width: 72px; height: 72px; }
  .case-body { padding: 34px 36px; }
  .about-in { grid-template-columns: 1fr; gap: 32px; }
  .about-mark { width: 110px; height: 110px; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .sol-block { grid-template-columns: 1fr; gap: 28px; }
  .sol-block .ph { height: 200px; }
}
@media (max-width: 960px) {
  .contact-rows { grid-template-columns: 1fr; gap: 22px; }
  .sec { padding: 104px 0; }
}
@media (max-width: 720px) {
  .grid-4, .grid-3 { grid-template-columns: 1fr; }
  .wrap { padding: 0 22px; }
  .nav-inner { padding: 0 22px; }
  .nav-links a:not(.nav-cta) { display: none; }
  .nav-links { gap: 0; }
  .hero { padding-top: 110px; }
  .mark-wrap { margin: 32px 0 36px; }
  .case-body { padding: 26px; }
  .foot-grid { grid-template-columns: 1fr; }
  .page-hero { padding-top: 130px; }
}

/* ========== 全页截图模式：跳过入场延迟 ========== */
.full .fx { animation: none; opacity: 1; transform: none; }

/* ========== 动效降级 ========== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-delay: 0ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .fx, .js .reveal { opacity: 1; transform: none; }
}