/* ============================================================
   上格科技 · 官网全站样式
   设计规范见 DESIGN.md
   ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root{
  /* 主色 · 取自 logo 深蓝 #00579C 的同色族 */
  --navy-950:#06253D;
  --navy-900:#0A3457;
  --navy-800:#00579C;
  --navy-700:#0A69B5;
  --navy-600:#1C79C4;

  /* logo 品牌蓝（仅用于光影与强调，不做大面积填充） */
  --brand-blue:#4285F4;

  /* 强调 · 金（全站唯一暖色） */
  --gold-700:#8A6A12;
  --gold-500:#C9A54E;
  --gold-400:#D9BB6C;
  --gold-300:#E2CD9A;

  /* 中性 */
  --bg:#F6F9FD;
  --surface:#FFFFFF;
  --text:#0F172A;
  --text-muted:#52627A;
  --border:#E3E8EF;
  --border-strong:#C9D6E6;

  /* 尺度 */
  --max:1200px;
  --gutter:clamp(20px,5vw,56px);
  --r-sm:6px;
  --r:10px;
  --r-lg:18px;
  --shadow-card:0 1px 2px rgba(6,37,61,.05),0 14px 34px -18px rgba(6,37,61,.28);
  --shadow-card-hover:0 1px 2px rgba(6,37,61,.05),0 28px 54px -22px rgba(6,37,61,.34);
  --t-fast:150ms;
  --t:200ms;
  --t-slow:320ms;

  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}

/* ---------- 2. 基础 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--surface);
  color:var(--text);
  font-family:var(--font);
  font-size:1rem;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25}
p{margin:0}
ul,ol{margin:0;padding:0}
img,svg{max-width:100%;display:block}
a{color:inherit}
[hidden]{display:none !important}
:focus-visible{outline:3px solid var(--navy-800);outline-offset:2px}
[id]{scroll-margin-top:96px}

/* ---------- 3. 工具类 ---------- */
.container{width:100%;max-width:var(--max);margin-inline:auto;padding-inline:var(--gutter)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--navy-950);color:#fff;padding:12px 20px;
  border-radius:0 0 var(--r) 0;text-decoration:none;
}
.skip-link:focus{left:0}

/* ---------- 4. 按钮与链接 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  min-height:50px;padding:0 26px;border-radius:var(--r);
  border:1px solid transparent;font:inherit;font-size:1rem;font-weight:600;line-height:1;
  text-decoration:none;cursor:pointer;
  transition:background-color var(--t),color var(--t),border-color var(--t),box-shadow var(--t),transform var(--t);
}
.btn--lg{min-height:52px;padding:0 28px;font-size:1rem}
.btn--primary{background:linear-gradient(180deg,var(--gold-400),var(--gold-500));color:var(--navy-950);box-shadow:0 8px 20px -10px rgba(201,165,78,.9)}
.btn--primary:hover{background:linear-gradient(180deg,#E3CA85,var(--gold-400));transform:translateY(-1px)}
.btn--primary:active{transform:translateY(1px)}
.btn--ghost{background:rgba(255,255,255,.04);color:#fff;border-color:rgba(255,255,255,.42)}
.btn--ghost:hover{border-color:#fff;background:rgba(255,255,255,.12)}
.btn--outline{background:transparent;color:var(--navy-800);border-color:var(--border-strong)}
.btn--outline:hover{border-color:var(--navy-800);background:rgba(0,87,156,.05)}
.hero .btn:focus-visible,.cta .btn:focus-visible{outline-color:var(--gold-500)}

.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--navy-800);font-weight:600;text-decoration:none;
  border-bottom:2px solid var(--gold-500);padding-bottom:2px;
  transition:color var(--t);
}
.link-arrow::after{content:"\2192";transition:transform var(--t)}
.link-arrow:hover{color:var(--navy-950)}
.link-arrow:hover::after{transform:translateX(4px)}

/* ---------- 5. 页头与导航 ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.site-header__inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:84px}

.brand{display:inline-flex;align-items:center;text-decoration:none}
.brand__logo{height:38px;width:auto}
@media (min-width:560px){.brand__logo{height:46px}}

.nav__list{list-style:none;display:flex;align-items:center;gap:6px}
.nav__link{
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;padding:0 14px;
  color:var(--navy-950);text-decoration:none;
  font-size:.9375rem;font-weight:500;letter-spacing:.01em;
  transition:color var(--t);
}
.nav__link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:9px;height:2px;
  border-radius:2px;background:var(--gold-500);
  transform:scaleX(0);transform-origin:left center;
  transition:transform var(--t-slow) cubic-bezier(.22,.61,.36,1);
}
.nav__link:hover{color:var(--navy-800)}
.nav__link:hover::after{transform:scaleX(1)}
.nav__link.is-active{color:var(--navy-800);font-weight:700}
.nav__link.is-active::after{transform:scaleX(1)}

.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;background:transparent;
  border:1px solid var(--border);border-radius:var(--r-sm);cursor:pointer;
}
.nav-toggle__bars{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--navy-950)}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--navy-950);
}
.nav-toggle__bars::before{top:-6px}
.nav-toggle__bars::after{top:6px}

@media (min-width:1000px){
  .nav{display:flex;align-items:center;gap:18px}
}
@media (max-width:999px){
  .nav-toggle{display:inline-flex}
  .nav{
    position:absolute;left:0;right:0;top:100%;
    display:none;flex-direction:column;align-items:stretch;
    background:var(--surface);border-bottom:1px solid var(--border);
    padding:12px var(--gutter) 22px;box-shadow:0 24px 48px -20px rgba(6,37,61,.35);
  }
  .nav.is-open{display:flex}
  .nav__list{flex-direction:column;align-items:stretch;gap:2px}
  .nav__link{justify-content:flex-start;min-height:50px;border-radius:var(--r-sm)}
  .nav__link::after{display:none}
  .nav__link:hover{background:rgba(0,87,156,.05)}
  .nav__link.is-active{box-shadow:inset 2px 0 0 var(--gold-500)}
}

/* ---------- 6. 首屏 Hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  display:flex;align-items:center;
  padding:clamp(54px,6vw,88px) 0 clamp(42px,4.5vw,62px);
  min-height:min(72vh,640px);
  min-height:min(72dvh,640px);
  background:linear-gradient(145deg,#04203A 0%,#083056 46%,#0C4372 100%);
}
.hero__bg{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(58% 68% at 80% 14%, rgba(66,133,244,.40), transparent 62%),
    radial-gradient(46% 56% at 4% 98%, rgba(201,165,78,.16), transparent 62%);
}
.hero__mark{
  position:absolute;right:-10%;top:52%;width:min(56vw,720px);height:auto;
  transform:translateY(-50%);opacity:.05;pointer-events:none;user-select:none;
}
.hero__inner{position:relative;z-index:1;width:100%}
.hero__title{
  font-size:clamp(1.75rem,1.1rem + 2.5vw,2.875rem);
  line-height:1.14;letter-spacing:-.02em;margin:0 0 20px;
  max-width:10.5em;
}
.hero__lead{
  font-size:clamp(1rem,.96rem + .18vw,1.0625rem);
  line-height:1.75;color:rgba(255,255,255,.80);
  max-width:min(100%,620px);margin:0 0 28px;
}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px}

.trust{list-style:none;display:grid;gap:12px;margin:clamp(34px,4.5vw,52px) 0 0}
.trust__item{
  padding:18px 22px;border:1px solid rgba(255,255,255,.16);border-radius:var(--r);
  background:rgba(255,255,255,.055);backdrop-filter:blur(8px);
  color:rgba(255,255,255,.84);font-size:.9375rem;line-height:1.65;
}
@media (min-width:768px){.trust{grid-template-columns:repeat(3,1fr);gap:18px}}

/* ---------- 7. 主张带 ---------- */
.clients{padding:clamp(30px,3.2vw,48px) 0;border-bottom:1px solid var(--border)}
.clients__label{
  display:flex;align-items:center;justify-content:center;gap:12px;
  margin:0 0 24px;font-size:.875rem;font-weight:700;letter-spacing:.14em;color:var(--gold-700);
}
.clients__label::before,.clients__label::after{
  content:"";flex:none;width:30px;height:2px;border-radius:2px;background:currentColor;
}
.clients__list{list-style:none;display:flex;flex-wrap:wrap;justify-content:center;gap:12px 26px}
.clients__list li{font-size:.9375rem;font-weight:600;line-height:1.6;color:var(--navy-700)}
@media (min-width:768px){
  .clients{padding:clamp(56px,6vw,88px) 0}
  .clients__label{margin-bottom:32px}
  .clients__list{gap:16px 40px}
  .clients__list li{font-size:1.125rem}
}
.clients__more{margin:32px 0 0;text-align:center}

.statement{padding:clamp(38px,4.2vw,64px) 0;border-bottom:1px solid var(--border)}
.statement__text{
  margin:0;max-width:100%;
  font-size:clamp(1.125rem,1rem + .85vw,1.625rem);
  line-height:1.5;letter-spacing:-.012em;color:var(--navy-950);
}
.statement__text::before{
  content:"";display:block;width:56px;height:3px;border-radius:2px;
  background:var(--gold-500);margin-bottom:30px;
}

/* ---------- 8. 区块 ---------- */
.section{padding:clamp(42px,4.2vw,66px) 0}
.section--alt{background:var(--bg)}
.eyebrow{
  display:flex;align-items:center;gap:12px;
  margin:0 0 14px;font-size:.875rem;font-weight:700;
  letter-spacing:.14em;color:var(--gold-700);
}
.eyebrow::before{content:"";flex:none;width:30px;height:2px;border-radius:2px;background:currentColor}
.eyebrow--on-dark{color:var(--gold-500)}
.section__title{
  font-size:clamp(1.25rem,1.05rem + .95vw,1.75rem);
  line-height:1.26;letter-spacing:-.016em;color:var(--navy-950);
  margin:0 0 12px;
}
.lead{font-size:1rem;line-height:1.75;color:var(--text-muted);max-width:min(100%,700px)}
.section__title + .lead{margin-bottom:24px}
.section__more{margin:24px 0 0}

/* ---------- 9. 卡片 ---------- */
.cards{list-style:none;display:grid;gap:24px}
@media (min-width:768px){.cards{grid-template-columns:repeat(3,1fr);gap:28px}}
.card{
  background:linear-gradient(180deg,#FFFFFF 0%,#F5F9FE 100%);
  border:1px solid var(--border);border-radius:var(--r-lg);
  padding:26px 24px 24px;box-shadow:var(--shadow-card);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card::before{content:"";display:block;width:44px;height:3px;border-radius:2px;background:var(--gold-500);margin-bottom:22px}
.card:hover{transform:translateY(-4px);border-color:#C9D9EC;box-shadow:var(--shadow-card-hover)}
.card h3{margin:0 0 .45rem;font-size:1.0625rem;color:var(--navy-950)}
.card p{margin:0;color:var(--text-muted);font-size:.9375rem;line-height:1.75}

/* ---------- 10. 业务清单（细线表格） ---------- */
.services{list-style:none;border-top:1px solid var(--border-strong)}
.services__item{border-bottom:1px solid var(--border)}
.services__link{
  display:grid;gap:6px;padding:24px 6px;text-decoration:none;color:inherit;
  transition:background-color var(--t),padding-left var(--t-slow);
}
@media (min-width:900px){
  .services__link{
    grid-template-columns:minmax(280px,.95fr) minmax(0,1.55fr) auto;
    gap:40px;align-items:baseline;padding:32px 10px;
  }
}
.services__name{font-size:1.0625rem;font-weight:700;color:var(--navy-950);letter-spacing:-.008em}
@media (min-width:900px){.services__name{font-size:1.375rem}}
.services__desc{color:var(--text-muted);font-size:.9375rem;line-height:1.7}
.services__arrow{color:var(--gold-700);font-size:1.125rem;line-height:1;transition:transform var(--t)}
@media (min-width:900px){.services__arrow{justify-self:end}}
.services__link:hover{background:linear-gradient(90deg,rgba(0,87,156,.055),rgba(0,87,156,0) 72%)}
.services__link:hover .services__arrow{transform:translateX(6px)}

/* ---------- 11. 流程 ---------- */
.rail{list-style:none}
.rail__step{
  position:relative;display:flex;align-items:baseline;gap:16px;
  padding:18px 0 18px 26px;border-left:1px solid var(--border-strong);
}
.rail__step::before{
  content:"";position:absolute;left:-4px;top:26px;
  width:7px;height:7px;border-radius:50%;background:var(--gold-500);
}
.rail__no{font-size:.875rem;font-weight:700;letter-spacing:.08em;color:var(--gold-700);font-variant-numeric:tabular-nums}
.rail__label{font-size:.9375rem;font-weight:600;color:var(--navy-950)}
@media (min-width:1024px){
  .rail{display:grid;grid-template-columns:repeat(7,1fr);border-top:1px solid var(--border-strong)}
  .rail__step{flex-direction:column;align-items:flex-start;gap:10px;padding:32px 18px 0 0;border-left:0}
  .rail__step::before{top:-4px;left:0}
  .rail__no{font-size:1rem}
  .rail__label{font-size:.9375rem}
}

/* ---------- 12. 结尾 CTA ---------- */
.cta{
  position:relative;overflow:hidden;color:#fff;
  padding:clamp(44px,5vw,68px) 0;
  background:linear-gradient(135deg,#06253D 0%,#0A3457 100%);
}
.cta__bg{
  position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(52% 84% at 88% 10%, rgba(66,133,244,.34), transparent 62%);
}
.cta__inner{position:relative;z-index:1;max-width:840px}
.cta__title{
  font-size:clamp(1.375rem,1.1rem + 1.1vw,1.875rem);
  line-height:1.28;letter-spacing:-.016em;margin:0 0 14px;
}
.cta__lead{color:rgba(255,255,255,.76);font-size:1rem;line-height:1.75;max-width:min(100%,560px);margin:0 0 24px}
.cta__actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 13. 页脚 ---------- */
.site-footer{background:#04182A;color:rgba(255,255,255,.72);padding:clamp(56px,7vw,96px) 0 0;font-size:.9375rem}
.site-footer__grid{display:grid;gap:38px}
@media (min-width:768px){.site-footer__grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:44px}}
.site-footer__brand .brand__name{display:block;margin-bottom:14px;color:#fff;font-weight:700;font-size:1.1875rem}
.site-footer__brand p{max-width:34ch;line-height:1.78}
.site-footer__title{margin:0 0 16px;font-size:.875rem;font-weight:700;letter-spacing:.06em;color:#fff}
.site-footer__list{list-style:none;display:grid;gap:11px}
.site-footer__list a{text-decoration:none;transition:color var(--t)}
.site-footer__list a:hover{color:var(--gold-500)}
.site-footer__bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px 24px;
  margin-top:clamp(40px,5vw,64px);padding:24px 0;
  border-top:1px solid rgba(255,255,255,.12);font-size:.875rem;
}
.site-footer__icp{color:rgba(255,255,255,.62)}
.site-footer__icp a{color:inherit;text-decoration:none;transition:color var(--t)}
.site-footer__icp a:hover{color:var(--gold-500)}

/* ---------- 14. 内页页头 ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  padding:clamp(44px,4.8vw,68px) 0 clamp(34px,3.8vw,50px);
  background:linear-gradient(145deg,#04203A 0%,#083056 52%,#0C4372 100%);
}
.page-hero__bg{
  position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(52% 96% at 84% 4%, rgba(66,133,244,.34), transparent 64%);
}
.page-hero__inner{position:relative;z-index:1;max-width:860px}
.page-hero__title{
  font-size:clamp(1.5rem,1.1rem + 1.5vw,2.125rem);
  line-height:1.18;letter-spacing:-.02em;margin:0;
}
.page-hero__lead{
  margin:22px 0 0;color:rgba(255,255,255,.78);
  font-size:1rem;line-height:1.75;max-width:min(100%,660px);
}

/* ---------- 15. 通用内容件 ---------- */
.prose{display:grid;gap:18px;max-width:min(100%,820px)}
.prose p{color:var(--text-muted);font-size:1rem;line-height:1.8}
.prose strong{color:var(--navy-950)}

.split{display:grid;gap:44px}
@media (min-width:900px){.split{grid-template-columns:1fr 1fr;gap:72px;align-items:start}}

.bullets{list-style:none;display:grid;gap:11px}
.bullets li{position:relative;padding-left:20px;color:var(--text-muted);line-height:1.8}
.bullets li::before{content:"";position:absolute;left:0;top:.82em;width:8px;height:2px;border-radius:1px;background:var(--gold-500)}

.biz-block{padding:clamp(32px,3.8vw,56px) 0;border-top:1px solid var(--border)}
.biz-block__title{
  margin:0;font-size:clamp(1.125rem,1rem + .6vw,1.375rem);
  line-height:1.3;letter-spacing:-.016em;color:var(--navy-950);
}

.flow{list-style:none;border-top:1px solid var(--border-strong)}
.flow__item{display:grid;grid-template-columns:auto 1fr;gap:18px;padding:20px 0;border-bottom:1px solid var(--border)}
.flow__no{font-size:.9375rem;font-weight:700;letter-spacing:.08em;color:var(--gold-700);font-variant-numeric:tabular-nums;padding-top:5px}
.flow__title{margin:0 0 6px;font-size:1rem;color:var(--navy-950)}
.flow__desc{color:var(--text-muted);font-size:.9375rem;line-height:1.75}

.notice{
  border:1px dashed var(--border-strong);border-radius:var(--r-lg);
  background:var(--bg);padding:28px 32px;
}
.notice__title{margin:0 0 8px;font-size:1rem;font-weight:700;color:var(--navy-950)}
.notice p{color:var(--text-muted);line-height:1.8}

.qa{display:grid;gap:14px}
.qa__item{border:1px solid var(--border);border-radius:var(--r-lg);background:var(--surface);overflow:hidden}
.qa__q{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;font-size:1rem;font-weight:700;color:var(--navy-950);
  cursor:pointer;list-style:none;
}
.qa__q::-webkit-details-marker{display:none}
.qa__q::after{content:"+";flex:none;font-size:1.5rem;font-weight:400;line-height:1;color:var(--gold-700);transition:transform var(--t)}
.qa__item[open] .qa__q::after{transform:rotate(45deg)}
.qa__a{padding:0 22px 20px;color:var(--text-muted);font-size:.9375rem;line-height:1.8;max-width:min(100%,780px)}
.qa__q:focus-visible{outline:3px solid var(--navy-800);outline-offset:-3px}

.contact-list{list-style:none;display:grid;gap:0;max-width:520px}
.contact-list li{display:grid;gap:6px;padding:22px 0;border-bottom:1px solid var(--border)}
.contact-list li:first-child{padding-top:0}
.contact-list__label{font-size:.875rem;font-weight:700;letter-spacing:.12em;color:var(--gold-700)}
.contact-list__value{font-size:1rem;color:var(--navy-950)}
.contact-list__value a{color:var(--navy-800);text-decoration:none;border-bottom:1px solid var(--gold-500)}
.contact-card{width:100%;max-width:720px;height:auto}

.hint{font-size:.9375rem;color:var(--text-muted);line-height:1.8}

.namegrid{
  list-style:none;display:grid;gap:1px;
  background:var(--border);border:1px solid var(--border);
  border-radius:var(--r-lg);overflow:hidden;
}
.namegrid li{background:var(--surface);padding:20px 24px;font-size:1rem;font-weight:600;line-height:1.5;color:var(--navy-950)}
@media (min-width:560px){.namegrid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:900px){.namegrid{grid-template-columns:repeat(3,1fr)}}

.qr{margin:0 0 46px}
.qr img{width:240px;height:auto;border:1px solid var(--border);border-radius:var(--r-lg);background:var(--surface)}
.qr figcaption{margin-top:14px;font-size:.9375rem;color:var(--text-muted)}

/* ---------- 16. 特效 ---------- */

/* 16.1 首屏入场 */
@keyframes enter{
  from{opacity:0;transform:translateY(18px)}
  to{opacity:1;transform:none}
}
.enter{animation:enter .72s cubic-bezier(.22,.61,.36,1) both}
.enter--1{animation-delay:0ms}
.enter--2{animation-delay:90ms}
.enter--3{animation-delay:180ms}
.enter--4{animation-delay:270ms}
.enter--5{animation-delay:360ms}
.mt-md{margin-top:44px}
.mt-lg{margin-top:48px}
.mt-xl{margin-top:64px}

/* 16.2 首屏光晕缓慢流动（品牌蓝 + 一点金） */
@keyframes drift-a{
  from{transform:translate3d(0,0,0) scale(1)}
  to{transform:translate3d(-7%,9%,0) scale(1.16)}
}
@keyframes drift-b{
  from{transform:translate3d(0,0,0) scale(1.06)}
  to{transform:translate3d(9%,-7%,0) scale(1)}
}
.hero__bg::before,.hero__bg::after{
  content:"";position:absolute;border-radius:50%;pointer-events:none;
  will-change:transform;
}
.hero__bg::before{
  width:52vw;height:52vw;right:2%;top:-18%;
  background:radial-gradient(circle,rgba(66,133,244,.50),transparent 66%);
  filter:blur(70px);animation:drift-a 24s ease-in-out infinite alternate;
}
.hero__bg::after{
  width:38vw;height:38vw;left:-10%;bottom:-22%;
  background:radial-gradient(circle,rgba(201,165,78,.30),transparent 68%);
  filter:blur(70px);animation:drift-b 30s ease-in-out infinite alternate;
}

/* 16.3 顶部滚动进度条 */
.scroll-progress{
  position:fixed;left:0;top:0;z-index:200;height:2px;width:0;
  background:linear-gradient(90deg,var(--gold-500),var(--gold-300));
  transition:width 90ms linear;
}

/* 16.4 页头滚动后加投影 */
.site-header{transition:box-shadow var(--t),border-color var(--t)}
.site-header.is-scrolled{
  box-shadow:0 12px 30px -20px rgba(6,37,61,.55);
  border-bottom-color:transparent;
}

/* 16.5 卡片指针光斑 + 悬停上浮 */
.card{position:relative;overflow:hidden}
.card::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:0;
  transition:opacity var(--t-slow);
  background:radial-gradient(260px circle at var(--mx,50%) var(--my,0%),rgba(0,87,156,.10),transparent 68%);
}
@media (hover:hover) and (pointer:fine){
  .card:hover::after{opacity:1}
}

/* 16.6 滚动入场 */
.reveal{opacity:0;transform:translateY(22px)}
.reveal.is-in{
  opacity:1;transform:none;
  transition:opacity .7s cubic-bezier(.22,.61,.36,1),transform .7s cubic-bezier(.22,.61,.36,1);
}
.reveal:nth-child(2){transition-delay:70ms}
.reveal:nth-child(3){transition-delay:140ms}
.reveal:nth-child(4){transition-delay:210ms}
.reveal:nth-child(5){transition-delay:280ms}
.reveal:nth-child(n+6){transition-delay:330ms}

@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;
  }
  .reveal{opacity:1;transform:none}
}