/* ===== KAIYUN赛事 · 共享站点样式 /assets/site.css ===== */

:root{
  --ink:#0B0F0E;
  --pitch-deep:#0E3B2E;
  --pitch:#1F6F4A;
  --turf:#3FA46A;
  --signal:#FF6A2B;
  --paper:#F4F1EA;
  --slate:#DCE4EA;
  --archive:#21324A;
  --silver:#9AA3A6;
  --wine:#5A1B2A;
  --paper-warm:#FFFDF8;

  --line:rgba(11,15,14,.16);
  --line-strong:rgba(11,15,14,.42);
  --line-light:rgba(244,241,234,.2);

  --font-display:"Arial Narrow","Helvetica Neue Condensed","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-body:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Segoe UI",sans-serif;
  --font-mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono","Noto Sans Mono",monospace;

  --step-1:13px;
  --step0:17px;
  --step1:20px;
  --step2:clamp(22px,2.4vw,28px);
  --step3:clamp(28px,3.6vw,44px);
  --step4:clamp(36px,5.4vw,64px);

  --gutter:clamp(1rem,4vw,2rem);
  --pad-section:clamp(2.8rem,6.5vw,5.5rem);
  --shell:1240px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ---------- reset ---------- */
*,
*::before,
*::after{ box-sizing:border-box; }

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

body{
  margin:0;
  background-color:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:var(--step0);
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4{
  margin:0 0 .6em;
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.06;
  letter-spacing:-.02em;
}
h1{ font-size:var(--step4); }
h2{ font-size:var(--step3); }
h3{ font-size:var(--step2); }
h4{ font-size:var(--step1); }

p{ margin:0 0 1em; }
p:last-child{ margin-bottom:0; }
ul,ol{ margin:0 0 1em; padding-left:1.2em; }
li{ margin:0; }
img,svg,video{ display:block; max-width:100%; height:auto; }
a{ color:inherit; }
button{ font:inherit; color:inherit; }
::selection{ background:var(--signal); color:#1A0B04; }

:focus-visible{
  outline:3px solid var(--signal);
  outline-offset:3px;
  border-radius:1px;
}

.sr-only{
  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;
}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:.75rem;
  left:.75rem;
  z-index:300;
  padding:.7rem 1.1rem;
  background:var(--signal);
  color:#1A0B04;
  font-weight:700;
  font-size:14px;
  letter-spacing:.06em;
  text-decoration:none;
  border-radius:1px;
  transform:translateY(-220%);
  transition:transform .18s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{ transform:translateY(0); }

/* ---------- 容器与章节 ---------- */
.container{
  width:min(var(--shell), calc(100% - var(--gutter) * 2));
  margin-inline:auto;
}

.section{ padding-block:var(--pad-section); }

.section__head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:.6rem 1.5rem;
  margin-bottom:clamp(1.3rem,3vw,2.2rem);
  padding-bottom:.9rem;
  border-bottom:1px solid var(--line);
}

.section__title{
  margin:0;
  font-family:var(--font-display);
  font-weight:900;
  font-size:var(--step3);
  line-height:1.04;
  letter-spacing:-.02em;
}

.section__note{
  margin:0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--silver);
}

.section--ink{
  background:var(--ink);
  color:rgba(244,241,234,.84);
}
.section--ink .section__title{ color:var(--paper); }
.section--ink .section__head{ border-bottom-color:var(--line-light); }
.section--ink .section__note{ color:var(--silver); }

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  margin:0 0 .85rem;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.24em;
  color:var(--pitch);
}
.eyebrow::before{
  content:"";
  width:26px;
  height:2px;
  background:var(--signal);
  flex:none;
}
.section--ink .eyebrow{ color:var(--turf); }

.prose p{ max-width:36em; }
.prose p + p{ margin-top:1em; }

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  padding:.8rem 1.45rem;
  font-family:var(--font-body);
  font-size:15px;
  font-weight:700;
  letter-spacing:.06em;
  line-height:1.2;
  text-decoration:none;
  border:2px solid transparent;
  border-radius:1px;
  cursor:pointer;
  transition:background-color .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}
.btn:hover{ transform:translateY(-1px); }

.btn--solid{
  background:var(--pitch);
  border-color:var(--pitch);
  color:#F6FFF9;
}
.btn--solid:hover{
  background:var(--turf);
  border-color:var(--turf);
  color:var(--ink);
}

.btn--ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--ink);
}
.btn--ghost:hover{
  background:var(--ink);
  border-color:var(--ink);
  color:var(--paper);
}

.btn--outline{
  background:transparent;
  border-color:rgba(244,241,234,.55);
  color:var(--paper);
}
.btn--outline:hover{
  background:var(--paper);
  border-color:var(--paper);
  color:var(--ink);
}

.btn--signal{
  background:var(--signal);
  border-color:var(--signal);
  color:#1A0B04;
}
.btn--signal:hover{
  background:#FF8A58;
  border-color:#FF8A58;
}

/* ---------- 面包屑 ---------- */
.breadcrumbs{ border-bottom:1px solid var(--line); }
.breadcrumbs__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.4rem;
  list-style:none;
  margin:0;
  padding:.85rem 0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--silver);
}
.breadcrumbs__item{ display:inline-flex; align-items:center; gap:.4rem; }
.breadcrumbs__link{
  color:var(--archive);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:border-color .18s var(--ease);
}
.breadcrumbs__link:hover{ border-bottom-color:var(--signal); }
.breadcrumbs__sep{ color:var(--silver); }

/* ---------- 栅格 ---------- */
.grid{
  display:grid;
  gap:clamp(1rem,2.4vw,1.8rem);
}
.grid--2{ grid-template-columns:repeat(2,minmax(0,1fr)); }
.grid--3{ grid-template-columns:repeat(3,minmax(0,1fr)); }
.grid--aside{ grid-template-columns:minmax(0,1.8fr) minmax(240px,.9fr); }

@media (max-width:860px){
  .grid--2,
  .grid--3,
  .grid--aside{ grid-template-columns:minmax(0,1fr); }
}

/* ---------- 纸张叠层卡片 ---------- */
.plate{
  position:relative;
  background:var(--paper-warm);
  border:1px solid var(--line-strong);
  padding:clamp(1.1rem,2.4vw,1.7rem);
  box-shadow:6px 6px 0 rgba(33,50,74,.09);
  transition:box-shadow .22s var(--ease), border-color .22s var(--ease), transform .22s var(--ease);
}
.plate::before{
  content:"";
  position:absolute;
  inset:4px;
  border:1px solid var(--line);
  pointer-events:none;
}
.plate:hover{
  border-color:var(--signal);
  box-shadow:6px 6px 0 rgba(255,106,43,.24);
}
.plate--slate{
  background:var(--slate);
  border-color:rgba(33,50,74,.35);
}
.plate--archive{
  background:var(--archive);
  border-color:#2C425E;
  color:rgba(244,241,234,.86);
  box-shadow:6px 6px 0 rgba(11,15,14,.3);
}
.plate--archive::before{ border-color:rgba(244,241,234,.18); }
.plate--archive .plate__title{ color:var(--paper); }

.plate__title{
  margin:0 0 .5rem;
  font-family:var(--font-display);
  font-weight:900;
  font-size:var(--step2);
  line-height:1.12;
  letter-spacing:-.01em;
}

/* ---------- 影像容器 ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  display:block;
  width:100%;
  aspect-ratio:16 / 10;
  background:var(--archive);
  border:1px solid var(--line-strong);
}
.media-frame__img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.86) contrast(1.04);
}
.media-frame__caption{
  position:absolute;
  left:0; right:0; bottom:0;
  padding:.5rem .8rem;
  background:linear-gradient(0deg, rgba(11,15,14,.88), rgba(11,15,14,0));
  color:rgba(244,241,234,.9);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  line-height:1.5;
}
.media-frame--portrait{ aspect-ratio:3 / 4; }
.media-frame--square{ aspect-ratio:1 / 1; }
.media-frame--wide{ aspect-ratio:21 / 9; }
.media-frame--grain::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:repeating-linear-gradient(45deg, rgba(244,241,234,.06) 0 1px, transparent 1px 3px);
  mix-blend-mode:overlay;
  opacity:.55;
}
.media-frame--placeholder{
  background-color:var(--pitch-deep);
  background-image:
    repeating-linear-gradient(115deg, rgba(63,164,106,.16) 0 2px, transparent 2px 34px),
    linear-gradient(0deg, rgba(11,15,14,.5), rgba(11,15,14,0));
}

/* ---------- 标签 ---------- */
.tag{
  display:inline-block;
  padding:.16rem .5rem;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  line-height:1.5;
  border:1px solid var(--line-strong);
  background:transparent;
  color:var(--archive);
  border-radius:1px;
  white-space:nowrap;
}
.tag--slate{
  background:var(--slate);
  border-color:var(--slate);
  color:var(--archive);
}
.tag--signal{
  background:var(--signal);
  border-color:var(--signal);
  color:#1A0B04;
}
.tag--green{
  background:var(--pitch);
  border-color:var(--pitch);
  color:#EAF6EF;
}
.tag--wine{
  background:var(--wine);
  border-color:var(--wine);
  color:#F3DEE3;
}

/* ---------- 数字锚点 ---------- */
.figure{ display:block; }
.figure__num{
  display:block;
  font-family:var(--font-mono);
  font-weight:700;
  font-size:clamp(34px,5vw,56px);
  line-height:.95;
  letter-spacing:-.03em;
  font-variant-numeric:tabular-nums;
  color:var(--ink);
}
.section--ink .figure__num,
.plate--archive .figure__num{ color:var(--paper); }
.figure__label{
  display:block;
  margin-top:.35rem;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.18em;
  color:var(--silver);
}

/* ---------- 横向联赛带 ---------- */
.rail{
  display:flex;
  gap:.5rem;
  overflow-x:auto;
  padding-bottom:.7rem;
  scroll-snap-type:x proximity;
  scrollbar-width:thin;
  scrollbar-color:var(--silver) transparent;
}
.rail::-webkit-scrollbar{ height:4px; }
.rail::-webkit-scrollbar-thumb{ background:var(--silver); }
.rail::-webkit-scrollbar-track{ background:rgba(11,15,14,.08); }
.rail:focus-visible{ outline-offset:4px; }
.rail__item{
  flex:0 0 auto;
  scroll-snap-align:start;
}

/* ---------- 细线 ---------- */
.rule{
  height:1px;
  margin:0;
  border:0;
  background:var(--line);
}
.rule--signal{ height:2px; background:var(--signal); }
.section--ink .rule{ background:var(--line-light); }

/* ---------- 显现 ---------- */
html.js .reveal{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .24s var(--ease), transform .24s var(--ease);
}
html.js .reveal.is-visible{
  opacity:1;
  transform:none;
}

/* ---------- 章节高亮 ---------- */
[data-spy-link]{
  position:relative;
  transition:color .18s var(--ease);
}
[data-spy-link].is-current{
  color:var(--ink);
  font-weight:700;
}
[data-spy-link].is-current::before{
  content:"";
  position:absolute;
  left:-.75rem;
  top:.62em;
  width:.4rem;
  height:.4rem;
  background:var(--signal);
  border-radius:50%;
}

/* ================= 刊头 ================= */
.masthead{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--ink);
  color:var(--paper);
  border-bottom:1px solid var(--line-light);
  isolation:isolate;
}
.masthead::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:repeating-linear-gradient(90deg, rgba(244,241,234,.07) 0 1px, transparent 1px 88px);
  opacity:.7;
}
.masthead > *{ position:relative; z-index:1; }

.masthead__frame{
  width:min(1320px, calc(100% - var(--gutter) * 2));
  margin-inline:auto;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);
  align-items:center;
  gap:clamp(.5rem,2vw,1.5rem);
  padding-block:.8rem .55rem;
}

.masthead__rail{
  margin:0;
  display:flex;
  align-items:center;
  gap:.6rem;
  color:var(--silver);
}
.masthead__rail--left{ justify-self:start; }
.masthead__rail--right{ justify-self:end; }

.masthead__rail-label{
  writing-mode:vertical-rl;
  text-orientation:mixed;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.24em;
  line-height:1;
  padding-block:.2rem;
}
.masthead__rail-meta{
  writing-mode:vertical-rl;
  text-orientation:mixed;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.18em;
  line-height:1;
  color:var(--turf);
  opacity:.95;
}

.masthead__brand{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:.35rem;
  text-align:center;
}
.masthead__wordmark{
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  color:var(--paper);
  text-decoration:none;
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(26px,4.6vw,42px);
  line-height:1;
  letter-spacing:-.01em;
}
.masthead__name{
  padding-bottom:.06em;
  border-bottom:3px solid transparent;
  transition:border-color .2s var(--ease);
}
.masthead__wordmark:hover .masthead__name,
.masthead__wordmark:focus-visible .masthead__name{ border-bottom-color:var(--signal); }

.masthead__mark{
  position:relative;
  flex:none;
  display:block;
  width:.5em;
  height:.5em;
  border:2px solid var(--signal);
  border-radius:50% 50% 44% 44%;
  margin-top:-.08em;
}
.masthead__mark::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:-.22em;
  width:.18em;
  height:.26em;
  background:var(--signal);
  border-radius:0 0 3px 3px;
  transform:translateX(-50%);
}

.masthead__tagline{
  margin:0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.38em;
  text-indent:.38em;
  color:var(--silver);
}

.masthead__console{
  width:min(1320px, calc(100% - var(--gutter) * 2));
  margin-inline:auto;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:1rem;
  border-top:1px solid var(--line-light);
  padding-block:.1rem .2rem;
}

.nav{ display:block; }
.nav__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:clamp(.6rem,2.6vw,2.2rem);
  margin:0;
  padding:.45rem 0 .6rem;
  list-style:none;
}
.nav__item{ display:block; }
.nav__link{
  position:relative;
  display:inline-block;
  padding:.35rem .1rem;
  color:rgba(244,241,234,.76);
  text-decoration:none;
  font-size:15px;
  letter-spacing:.1em;
  transition:color .18s var(--ease);
}
.nav__link::after{
  content:"";
  position:absolute;
  left:0; right:0; bottom:-.1rem;
  height:2px;
  background:var(--signal);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s var(--ease);
}
.nav__link:hover{ color:var(--paper); }
.nav__link:hover::after{ transform:scaleX(.5); }
.nav__link[aria-current="page"]{ color:var(--paper); font-weight:700; }
.nav__link[aria-current="page"]::after{ transform:scaleX(1); }

.nav-toggle{
  display:none;
  align-items:center;
  gap:.55rem;
  padding:.55rem .85rem;
  background:transparent;
  color:var(--paper);
  border:1px solid var(--line-light);
  border-radius:1px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.18em;
  cursor:pointer;
  transition:border-color .18s var(--ease), color .18s var(--ease);
}
.nav-toggle:hover,
.nav-toggle[aria-expanded="true"]{ border-color:var(--signal); color:var(--signal); }
.nav-toggle__bars{
  display:flex;
  flex-direction:column;
  gap:3px;
  width:16px;
}
.nav-toggle__bar{
  display:block;
  height:2px;
  background:currentColor;
  transition:transform .2s var(--ease), opacity .2s var(--ease);
}
.nav-toggle__text{ line-height:1; }
.masthead[data-open] .nav-toggle__bar:nth-child(1){ transform:translateY(5px) rotate(45deg); }
.masthead[data-open] .nav-toggle__bar:nth-child(2){ opacity:0; }
.masthead[data-open] .nav-toggle__bar:nth-child(3){ transform:translateY(-5px) rotate(-45deg); }

.masthead__progress{
  position:absolute;
  left:0; right:0; bottom:-1px;
  height:3px;
  overflow:hidden;
  background:rgba(244,241,234,.12);
}
.masthead__progress-fill{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg, var(--turf), var(--signal) 86%);
  transition:width .12s linear;
}

@media (max-width:900px){
  .masthead__frame{
    grid-template-columns:minmax(0,1fr);
    padding-block:.6rem .45rem;
  }
  .masthead__rail{ display:none; }
  .masthead__brand{ gap:.25rem; }
  .masthead__tagline{ font-size:10px; letter-spacing:.3em; }
  .masthead__console{
    justify-content:space-between;
    padding-block:.4rem .55rem;
  }
  .nav-toggle{ display:inline-flex; }
  .nav{
    position:absolute;
    top:100%;
    left:0; right:0;
    display:none;
    background:var(--pitch-deep);
    border-top:1px solid var(--line-light);
    border-bottom:1px solid var(--line-light);
    box-shadow:0 24px 40px rgba(0,0,0,.5);
    max-height:min(70vh,520px);
    overflow-y:auto;
    overscroll-behavior:contain;
  }
  .masthead[data-open] .nav{ display:block; }
  .nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:.35rem 0 .8rem;
  }
  .nav__link{
    display:block;
    padding:.95rem var(--gutter);
    border-bottom:1px solid rgba(244,241,234,.08);
    font-size:16px;
    letter-spacing:.08em;
  }
  .nav__link::after{ display:none; }
  .nav__link:hover{ color:var(--turf); }
  .nav__link[aria-current="page"]{
    background:linear-gradient(90deg, rgba(255,106,43,.22), rgba(255,106,43,0) 72%);
    box-shadow:inset 3px 0 0 var(--signal);
  }
}

/* ================= 页脚 ================= */
.foot{
  position:relative;
  margin-top:clamp(2.5rem,6vw,5rem);
  background:var(--ink);
  color:rgba(244,241,234,.74);
  border-top:3px solid var(--pitch);
}
.foot::before{
  content:"";
  position:absolute;
  top:0; left:0; right:0;
  height:7px;
  pointer-events:none;
  background-image:repeating-linear-gradient(90deg, var(--silver) 0 1px, transparent 1px 40px);
  opacity:.26;
}

.foot__inner{
  width:min(var(--shell), calc(100% - var(--gutter) * 2));
  margin-inline:auto;
  padding-block:clamp(2.2rem,5vw,3.6rem) clamp(1.4rem,3vw,2.2rem);
  display:grid;
  grid-template-columns:minmax(200px,.9fr) minmax(0,1.6fr) minmax(240px,1fr);
  gap:clamp(1.6rem,4vw,3.2rem);
  align-items:start;
}

.foot__brand{ display:block; }
.foot__wordmark{
  margin:0 0 .5rem;
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(22px,2.6vw,30px);
  line-height:1;
  letter-spacing:-.01em;
  color:var(--paper);
}
.foot__slogan{
  margin:0 0 .9rem;
  max-width:20em;
  font-size:15px;
  line-height:1.7;
  color:rgba(244,241,234,.72);
}
.foot__version{
  margin:0;
  display:flex;
  align-items:center;
  gap:.5rem;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.12em;
  color:var(--silver);
}

.foot__cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(1rem,2.4vw,2rem);
}
.foot__col{ display:block; min-width:0; }
.foot__col-title{
  margin:0 0 .9rem;
  padding-bottom:.45rem;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.24em;
  color:var(--turf);
  border-bottom:1px solid var(--line-light);
}
.foot__links{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:.45rem;
}
.foot__links-item{ display:block; }
.foot__link{
  color:rgba(244,241,234,.78);
  text-decoration:none;
  font-size:15px;
  padding-bottom:1px;
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease), border-color .18s var(--ease);
}
.foot__link:hover{
  color:var(--paper);
  border-bottom-color:var(--signal);
}

.foot__contact{
  display:grid;
  gap:.35rem;
  min-width:0;
}
.foot__contact-line{
  margin:0;
  font-family:var(--font-mono);
  font-size:12.5px;
  line-height:1.7;
  letter-spacing:.04em;
  color:rgba(244,241,234,.8);
  overflow-wrap:anywhere;
}
.foot__note{
  margin:.7rem 0 0;
  padding-left:.75rem;
  max-width:26em;
  border-left:2px solid var(--signal);
  font-size:12.5px;
  line-height:1.7;
  color:var(--silver);
}

.foot__legal{
  width:min(var(--shell), calc(100% - var(--gutter) * 2));
  margin-inline:auto;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:.5rem 1.5rem;
  padding-block:1rem 1.4rem;
  border-top:1px solid var(--line-light);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--silver);
}
.foot__legal-item{ margin:0; }

@media (max-width:960px){
  .foot__inner{ grid-template-columns:minmax(0,1fr); }
  .foot__cols{ max-width:640px; }
}
@media (max-width:600px){
  .foot__cols{ grid-template-columns:repeat(2,minmax(0,1fr)); }
  .foot__legal{ flex-direction:column; }
}

/* ---------- 减弱动效 ---------- */
@media (prefers-reduced-motion:reduce){
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  html.js .reveal{ opacity:1 !important; transform:none !important; }
  .skip-link{ transition:none; }
}