/* ================= 1. 设计令牌 ================= */
:root{
  --c-night:#041A15;
  --c-ink:#06231C;
  --c-panel:#0B3028;
  --c-float:#124237;
  --c-neon:#4FE3C1;
  --c-neon-soft:#A8F5E6;
  --c-gold:#E8B04B;
  --c-red:#E24B3F;
  --c-text:#EAF3F0;
  --c-muted:#8FA9A2;

  --line:rgba(168,245,230,.13);
  --line-soft:rgba(168,245,230,.08);
  --grid-line:rgba(168,245,230,.08);
  --glow:0 18px 44px -28px rgba(0,0,0,.95);

  --radius:14px;
  --radius-lg:20px;
  --shell:1240px;
  --gutter:clamp(16px,3vw,32px);
  --header-h:96px;

  --font-head:"Inter Tight","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}

/* ================= 2. Reset ================= */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd{margin:0;padding:0}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
img,svg,video{display:block;max-width:100%}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--c-neon);outline-offset:3px;border-radius:8px}
::selection{background:rgba(79,227,193,.28);color:var(--c-neon-soft)}

/* ================= 3. 基础与中文排版 ================= */
body{
  min-height:100vh;
  padding-top:var(--header-h);
  font-family:var(--font-body);
  font-size:1rem;
  font-weight:400;
  line-height:1.75;
  color:var(--c-text);
  background-color:var(--c-night);
  background-image:
    repeating-linear-gradient(to right,var(--grid-line) 0 1px,transparent 1px 80px),
    repeating-linear-gradient(to bottom,var(--grid-line) 0 1px,transparent 1px 80px);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-locked{overflow:hidden}
a,button{-webkit-tap-highlight-color:transparent}
[id]{scroll-margin-top:calc(var(--header-h) + 12px)}
#main-content{display:block}
.visually-hidden{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ================= 4. 布局与排版工具 ================= */
.container{width:100%;max-width:var(--shell);margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter)}
.section{padding:clamp(48px,7vw,92px) 0}
.section--tight{padding:clamp(26px,4vw,46px) 0}
.section-head{display:flex;flex-direction:column;gap:14px;max-width:46em;margin-bottom:clamp(22px,3vw,36px)}
.stack{display:grid;gap:clamp(14px,2vw,22px)}
.cluster{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.divider{height:1px;border:0;background:var(--line);margin:0}

.display{font-family:var(--font-head);font-weight:800;font-size:clamp(2.4rem,5.6vw,4.6rem);line-height:1.04;letter-spacing:.02em}
.section-title{font-family:var(--font-head);font-weight:700;font-size:clamp(1.6rem,2.8vw,2.4rem);line-height:1.18;letter-spacing:.02em}
.card-title{font-family:var(--font-head);font-weight:700;font-size:1.125rem;line-height:1.4;letter-spacing:.02em}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-head);font-size:.6875rem;font-weight:700;letter-spacing:.22em;color:var(--c-neon);text-transform:uppercase}
.eyebrow::before{content:"";display:block;width:22px;height:1px;background:currentColor;opacity:.8}
.lede{font-size:clamp(1rem,1.4vw,1.125rem);line-height:1.8;color:var(--c-muted);max-width:36em}
.caption{font-size:.8125rem;line-height:1.6;color:var(--c-muted);letter-spacing:.02em}
.prose{max-width:38em;color:var(--c-text)}
.prose p + p{margin-top:1.2em}
.prose strong{color:var(--c-neon-soft);font-weight:600}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}

.split{display:grid;gap:clamp(24px,4vw,56px);align-items:start}
.split--aside-left{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
.split--aside-right{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
@media (max-width:900px){
  .split--aside-left,.split--aside-right{grid-template-columns:minmax(0,1fr)}
}

/* ================= 5. 头部：悬浮胶囊导航 ================= */
.skip-link{
  position:absolute;left:50%;top:10px;z-index:99;
  transform:translate(-50%,-190%);
  padding:10px 20px;border-radius:999px;
  background:var(--c-neon);color:var(--c-night);
  font-size:.8125rem;font-weight:700;letter-spacing:.05em;white-space:nowrap;
  transition:transform .2s ease;
}
.skip-link:focus{transform:translate(-50%,0)}

.site-header{
  position:fixed;inset:0 0 auto 0;z-index:60;
  padding:12px var(--gutter) 0;
  pointer-events:none;
}
.header-rail{
  position:relative;
  max-width:var(--shell);margin:0 auto;
  display:flex;align-items:center;gap:clamp(12px,2vw,26px);
}
.header-rail > *{pointer-events:auto}

.brand{
  display:inline-flex;flex-direction:column;gap:1px;
  padding:9px 18px;border-radius:999px;
  background:rgba(6,35,28,.86);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  box-shadow:var(--glow);
  transition:padding .25s ease;
}
.brand__mark{font-family:var(--font-head);font-weight:800;font-size:1.0625rem;letter-spacing:.06em;line-height:1.25;color:var(--c-text)}
.brand__line{font-size:.6875rem;letter-spacing:.1em;line-height:1.35;color:var(--c-muted);max-height:2em;overflow:hidden;transition:opacity .2s ease,max-height .2s ease}
.site-header[data-scrolled] .brand__line{opacity:0;max-height:0}

.nav-island{flex:1 1 auto;display:flex;align-items:center;justify-content:center}
.nav-island__head{display:none}
.nav-list{
  display:flex;align-items:center;gap:2px;padding:6px;
  border-radius:999px;
  background:rgba(6,35,28,.86);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  box-shadow:var(--glow);
  transition:padding .25s ease;
}
.site-header[data-scrolled] .nav-list{padding:4px}
.nav-item{display:flex}
.nav-link{
  display:block;padding:9px 15px;border-radius:999px;white-space:nowrap;
  font-size:.875rem;font-weight:500;letter-spacing:.02em;color:var(--c-muted);
  transition:background .22s ease,color .22s ease;
}
.nav-link:hover{color:var(--c-text);background:rgba(18,66,55,.75)}
.nav-link[aria-current="page"]{color:var(--c-night);background:var(--c-neon);font-weight:700}
.nav-item--cta{margin-left:6px}
.nav-cta{
  display:block;padding:9px 16px;border-radius:999px;white-space:nowrap;
  font-size:.8125rem;font-weight:700;letter-spacing:.04em;
  color:var(--c-neon);border:1px solid rgba(79,227,193,.45);
  transition:background .22s ease,color .22s ease,border-color .22s ease;
}
.nav-cta:hover{background:rgba(79,227,193,.14);color:var(--c-neon-soft);border-color:var(--c-neon)}

.header-tools{display:flex;align-items:center;gap:10px;margin-left:auto}

.room-capsule{
  display:flex;align-items:center;gap:8px;white-space:nowrap;
  padding:8px 14px;border-radius:999px;
  background:rgba(11,48,40,.9);
  border:1px solid rgba(79,227,193,.26);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  box-shadow:var(--glow);
}
.room-capsule__dot{width:7px;height:7px;border-radius:50%;flex:none;background:var(--c-neon);box-shadow:0 0 0 4px rgba(79,227,193,.16);animation:room-pulse 2.6s ease-in-out infinite}
.room-capsule__label{font-size:.75rem;color:var(--c-muted)}
.room-capsule__num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:.9375rem;font-weight:600;color:var(--c-neon-soft)}
.room-capsule__unit{font-size:.75rem;color:var(--c-muted);margin-left:-4px}
.room-capsule__cap{font-size:.6875rem;letter-spacing:.03em;color:var(--c-gold);border-left:1px solid var(--line);padding-left:8px;margin-left:2px}
@keyframes room-pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.55;transform:scale(.82)}}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  height:44px;padding:0 16px;border-radius:999px;
  background:rgba(6,35,28,.9);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  box-shadow:var(--glow);
}
.nav-toggle__bars{display:flex;flex-direction:column;gap:5px;width:18px}
.nav-toggle__bar{display:block;height:1.5px;width:100%;border-radius:2px;background:var(--c-text);transition:transform .25s ease,background .25s ease}
.nav-toggle__text{font-size:.8125rem;font-weight:600;letter-spacing:.06em;color:var(--c-muted);transition:color .25s ease}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:first-child{transform:translateY(3.25px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:last-child{transform:translateY(-3.25px) rotate(-45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__text{color:var(--c-neon)}

.scroll-meter{max-width:var(--shell);margin:10px auto 0;height:1px;border-radius:1px;background:rgba(168,245,230,.1);pointer-events:none}
.scroll-meter__fill{display:block;height:100%;width:0;border-radius:1px;background:linear-gradient(90deg,var(--c-neon),var(--c-neon-soft) 62%,var(--c-gold))}

.nav-scrim{
  position:fixed;inset:0;z-index:65;
  background:rgba(4,26,21,.72);
  -webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);
  opacity:0;pointer-events:none;
  transition:opacity .3s ease;
}
.nav-scrim[data-open]{opacity:1;pointer-events:auto}

@media (max-width:980px){
  :root{--header-h:82px}
  .site-header{padding-top:10px}
  .brand{padding:7px 14px}
  .brand__line{display:none}
  .nav-toggle{display:flex;position:relative;z-index:75}
  .room-capsule{padding:7px 11px;gap:7px}
  .room-capsule__label,.room-capsule__unit,.room-capsule__cap{display:none}

  .nav-island{
    position:fixed;top:0;right:0;bottom:0;z-index:70;
    width:min(86vw,340px);
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    padding:76px 20px 32px;
    background:var(--c-ink);
    border-left:1px solid var(--line);
    box-shadow:-30px 0 60px -30px rgba(0,0,0,.9);
    transform:translateX(102%);
    transition:transform .34s cubic-bezier(.32,.72,.3,1);
    overflow-y:auto;
  }
  .nav-island[data-open]{transform:translateX(0)}
  .nav-island__head{
    display:flex;align-items:center;gap:9px;
    padding:12px 14px;margin-bottom:16px;border-radius:999px;
    background:rgba(11,48,40,.9);
    border:1px solid rgba(79,227,193,.26);
  }
  .nav-island__head::before{content:"";width:7px;height:7px;border-radius:50%;flex:none;background:var(--c-neon);box-shadow:0 0 0 4px rgba(79,227,193,.16)}
  .nav-island__head-label{font-size:.75rem;color:var(--c-muted)}
  .nav-island__head-num{margin-left:auto;font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:1rem;font-weight:600;color:var(--c-neon-soft)}

  .nav-list{flex-direction:column;align-items:stretch;gap:2px;width:100%;padding:0;background:none;border:0;box-shadow:none;-webkit-backdrop-filter:none;backdrop-filter:none}
  .nav-item{display:block}
  .nav-link{padding:13px 16px;border-radius:12px;font-size:1rem;color:var(--c-text)}
  .nav-link:hover{background:rgba(18,66,55,.75);color:var(--c-text)}
  .nav-link[aria-current="page"]{background:rgba(79,227,193,.14);color:var(--c-neon);box-shadow:inset 0 0 0 1px rgba(79,227,193,.35)}
  .nav-item--cta{margin:14px 0 0}
  .nav-cta{text-align:center;padding:13px 16px;font-size:.875rem}
}
@media (max-width:480px){
  .nav-toggle__text{display:none}
  .nav-toggle{padding:0 12px}
}

/* ================= 6. 页脚 ================= */
.site-footer{
  position:relative;
  margin-top:clamp(72px,10vw,128px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(6,35,28,.55),rgba(4,26,21,1) 72%);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(79,227,193,.5),transparent);
}
.footer-inner{max-width:var(--shell);margin:0 auto;padding:clamp(36px,5vw,60px) var(--gutter) 26px}
.footer-row--top{
  display:grid;grid-template-columns:minmax(200px,1fr) 1.7fr;
  gap:clamp(24px,4vw,64px);
  padding-bottom:clamp(24px,3vw,36px);
  border-bottom:1px solid var(--line);
}
.footer-mark{font-family:var(--font-head);font-weight:800;font-size:1.125rem;letter-spacing:.08em;color:var(--c-text)}
.footer-tagline{margin-top:8px;max-width:20em;font-size:.8125rem;line-height:1.7;color:var(--c-muted)}
.footer-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(18px,3vw,36px)}
.footer-col__title{font-family:var(--font-head);font-size:.6875rem;font-weight:700;letter-spacing:.18em;color:var(--c-neon);margin-bottom:12px}
.footer-list{display:grid;gap:2px}
.footer-link{display:inline-block;padding:4px 0;font-size:.875rem;color:var(--c-muted);transition:color .2s ease,transform .2s ease}
.footer-link:hover{color:var(--c-neon-soft);transform:translateX(3px)}
.footer-row--bottom{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 20px;
  padding-top:20px;
  font-size:.75rem;color:var(--c-muted);
}
.footer-contact{display:flex;flex-wrap:wrap;gap:4px 0}
.footer-contact__item{position:relative;padding-right:16px;margin-right:16px}
.footer-contact__item::after{content:"";position:absolute;right:0;top:50%;width:1px;height:10px;background:var(--line);transform:translateY(-50%)}
.footer-contact__item:last-child{padding-right:0;margin-right:0}
.footer-contact__item:last-child::after{display:none}
.footer-legal{flex:1 1 320px;line-height:1.7}
.footer-year{margin-left:auto;white-space:nowrap;font-family:var(--font-mono);letter-spacing:.04em;color:var(--c-muted)}
@media (max-width:820px){
  .footer-row--top{grid-template-columns:minmax(0,1fr)}
  .footer-nav{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:480px){
  .footer-nav{grid-template-columns:minmax(0,1fr)}
  .footer-year{margin-left:0}
}

/* ================= 7. 按钮与标签 ================= */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 22px;border-radius:999px;border:1px solid transparent;
  font-size:.875rem;font-weight:600;letter-spacing:.03em;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.btn--primary{background:var(--c-neon);color:var(--c-night)}
.btn--primary:hover{background:var(--c-neon-soft)}
.btn--ghost{border-color:rgba(79,227,193,.45);color:var(--c-neon)}
.btn--ghost:hover{background:rgba(79,227,193,.12);color:var(--c-neon-soft);border-color:var(--c-neon)}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;border:1px solid;
  font-family:var(--font-mono);font-size:.6875rem;font-weight:600;letter-spacing:.06em;line-height:1.7;
}
.badge--neon{color:var(--c-neon);border-color:rgba(79,227,193,.4);background:rgba(79,227,193,.08)}
.badge--gold{color:var(--c-gold);border-color:rgba(232,176,75,.4);background:rgba(232,176,75,.08)}
.badge--red{color:var(--c-red);border-color:rgba(226,75,63,.45);background:rgba(226,75,63,.1)}

/* ================= 8. 卡片与网格框架 ================= */
.card{
  position:relative;
  padding:clamp(18px,2.2vw,26px);
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:rgba(11,48,40,.66);
  box-shadow:0 1px 0 rgba(168,245,230,.05) inset,var(--glow);
}
.card--float{background:rgba(18,66,55,.72)}
.card--tilt{transform:translateX(-24px)}
@media (max-width:1100px){.card--tilt{transform:none}}
.card__head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:12px}
.card__meta{font-family:var(--font-mono);font-size:.75rem;letter-spacing:.04em;color:var(--c-muted);white-space:nowrap}
.card__body{font-size:.9375rem;line-height:1.75;color:var(--c-muted)}
.card__body + .card__body{margin-top:10px}
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:clamp(14px,2vw,22px)}

.grid-frame{
  position:relative;overflow:hidden;
  padding:clamp(20px,3vw,34px);
  border:1px solid var(--line);border-radius:var(--radius-lg);
  background:rgba(6,35,28,.5);
}
.grid-frame::before{
  content:"";position:absolute;inset:0;pointer-events:none;z-index:0;
  background-image:
    repeating-linear-gradient(to right,var(--grid-line) 0 1px,transparent 1px 44px),
    repeating-linear-gradient(to bottom,var(--grid-line) 0 1px,transparent 1px 44px);
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 78%);
  mask-image:linear-gradient(180deg,#000,transparent 78%);
}
.grid-frame > *{position:relative;z-index:1}
[data-board-grid]::after{
  content:"";position:absolute;inset:0;pointer-events:none;z-index:0;
  background:radial-gradient(240px circle at var(--px,50%) var(--py,0%),rgba(79,227,193,.14),transparent 72%);
  opacity:0;transition:opacity .35s ease;
}
[data-board-grid]:hover::after{opacity:1}
@keyframes board-scan{0%{background-position:0% 0%}50%{background-position:100% 100%}100%{background-position:0% 0%}}
@media (hover:none){
  [data-board-grid]::after{
    opacity:.5;
    background:radial-gradient(180px circle at 50% 50%,rgba(79,227,193,.16),transparent 70%);
    background-size:260% 260%;background-repeat:no-repeat;
    animation:board-scan 9s ease-in-out infinite;
  }
}

/* ================= 9. 规则条目、步骤、数据 ================= */
.rule-list{display:grid;gap:10px}
.rule-item{
  border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(11,48,40,.5);overflow:hidden;
  transition:border-color .25s ease,background .25s ease;
}
.rule-item[data-open]{border-color:rgba(79,227,193,.35);background:rgba(11,48,40,.78)}
.rule-item__head{display:flex;align-items:center;gap:14px;width:100%;padding:16px 20px;text-align:left}
.rule-item__index{flex:none;font-family:var(--font-mono);font-size:.75rem;letter-spacing:.06em;color:var(--c-neon)}
.rule-item__title{font-size:.9375rem;font-weight:600;color:var(--c-text)}
.rule-item__mark{position:relative;flex:none;margin-left:auto;width:20px;height:20px}
.rule-item__mark::before,.rule-item__mark::after{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  background:var(--c-muted);transition:transform .25s ease,background .25s ease;
}
.rule-item__mark::before{width:11px;height:1.5px}
.rule-item__mark::after{width:1.5px;height:11px}
.rule-item__head[aria-expanded="true"] .rule-item__mark::before{background:var(--c-neon)}
.rule-item__head[aria-expanded="true"] .rule-item__mark::after{transform:translate(-50%,-50%) scaleY(0)}
.rule-item__body{display:grid;grid-template-rows:0fr;transition:grid-template-rows .34s ease}
.rule-item__head[aria-expanded="true"] + .rule-item__body,
.rule-item[data-open] .rule-item__body{grid-template-rows:1fr}
.rule-item__inner{overflow:hidden;min-height:0}
.rule-item__content{padding:0 20px 20px;font-size:.875rem;line-height:1.8;color:var(--c-muted)}

.steps{display:grid;gap:14px}
.step{display:grid;grid-template-columns:auto minmax(0,1fr);gap:14px;align-items:start}
.step__index{
  display:flex;align-items:center;justify-content:center;flex:none;
  width:32px;height:32px;border-radius:50%;
  border:1px solid var(--line);background:rgba(11,48,40,.7);
  font-family:var(--font-mono);font-size:.8125rem;color:var(--c-neon);
}
.step__body{font-size:.9375rem;line-height:1.8;color:var(--c-muted)}
.step__body strong{color:var(--c-text);font-weight:600}

.stat-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));
  gap:1px;background:var(--line);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;
}
.stat{padding:18px 20px;background:rgba(6,35,28,.75)}
.stat__value{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:1.5rem;font-weight:600;line-height:1.2;color:var(--c-neon-soft)}
.stat__label{margin-top:6px;font-size:.75rem;letter-spacing:.04em;color:var(--c-muted)}

/* ================= 10. 图片容器（供页面阶段使用） ================= */
.media-frame{
  position:relative;overflow:hidden;
  aspect-ratio:4/3;
  border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(150deg,rgba(18,66,55,.75),rgba(4,26,21,.9));
}
.media-frame--wide{aspect-ratio:16/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}
.media-frame__img{width:100%;height:100%;object-fit:cover}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(4,26,21,0) 42%,rgba(4,26,21,.72));
}
.media-frame__caption{position:absolute;left:16px;right:16px;bottom:14px;z-index:1;font-size:.75rem;letter-spacing:.03em;color:var(--c-muted)}

/* ================= 11. 面包屑 ================= */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px;
  margin-bottom:clamp(18px,3vw,28px);
  font-size:.75rem;letter-spacing:.04em;color:var(--c-muted);
}
.breadcrumb__item{display:inline-flex;align-items:center;gap:6px}
.breadcrumb__item + .breadcrumb__item::before{content:"/";color:rgba(143,169,162,.5)}
.breadcrumb a{color:var(--c-muted);transition:color .2s ease}
.breadcrumb a:hover{color:var(--c-neon)}
.breadcrumb [aria-current="page"]{color:var(--c-text)}

/* ================= 12. 显现与降低动效 ================= */
.js-reveal [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s cubic-bezier(.22,.68,.3,1)}
.js-reveal [data-reveal].is-visible{opacity:1;transform:none}

@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;
  }
  .js-reveal [data-reveal]{opacity:1;transform:none}
  .rule-item__body{grid-template-rows:1fr}
}