/* ==========================================================================
   悦盈赛事 · 共享样式表 /assets/site.css
   暖纸底 + 深墨粗线 + 盈光青绿 / 沙金印刷色，非对称编辑部节奏
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root{
  --ink:#0B1418;
  --night:#10243A;
  --paper:#F4EFE6;
  --paper-2:#E7DFD2;
  --jade:#12C2A0;
  --jade-deep:#0A7A66;
  --sand:#E0A73C;
  --sand-soft:#F6E3BC;
  --clay:#D2563C;
  --slate:#5C6E75;
  --white:#FFFFFF;

  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono","Courier New",monospace;

  --bd:3px solid var(--ink);
  --bd-thin:2px solid var(--ink);
  --shadow-hard:6px 6px 0 var(--ink);
  --shadow-soft:0 10px 30px rgba(11,20,24,.16);
  --radius:16px;
  --pill:999px;
  --wrap:1320px;
  --ease:cubic-bezier(.22,.68,0,1);
  --hairline:1px solid rgba(11,20,24,.16);
  --hairline-light:1px solid rgba(244,239,230,.18);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
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%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;padding:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
[hidden]{display:none!important}

/* ---------- 3. 中文排版与纸面 ---------- */
body{
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  color:var(--ink);
  background:var(--paper);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:1;
  pointer-events:none;
  background-image:radial-gradient(rgba(11,20,24,.05) 1px,transparent 1px);
  background-size:3px 3px;
  opacity:.55;
}
body.is-nav-open{overflow:hidden}
h1,h2,h3,h4{line-height:1.15;font-weight:900;letter-spacing:-.01em}
.num,time,.strip__time,.chapter__num,.data-bar__value,.rank-item__no,.rank-item__stat,.step__num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
}
:focus-visible{outline:3px solid var(--jade);outline-offset:3px;border-radius:6px}

/* ---------- 4. 跳转与外壳 ---------- */
.skip-link{
  position:fixed;
  left:1rem;
  top:-4.5rem;
  z-index:200;
  padding:.6rem 1.1rem;
  border-radius:var(--pill);
  background:var(--ink);
  color:var(--paper);
  font-size:.85rem;
  letter-spacing:.08em;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:.75rem}

.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:var(--paper);
  border-bottom:var(--bd);
  transition:background .25s linear;
}
.site-header[data-scrolled]{background:rgba(244,239,230,.88);backdrop-filter:blur(10px)}

.scroll-progress{
  position:absolute;
  left:0;right:0;bottom:-3px;
  height:3px;
  overflow:hidden;
  pointer-events:none;
}
.scroll-progress span{display:block;height:100%;width:0;background:var(--jade)}

/* ---------- 5. 顶部赛程条带 ---------- */
.strip{
  display:flex;
  align-items:center;
  gap:1rem;
  padding:.34rem clamp(.75rem,3vw,1.5rem);
  background-color:var(--ink);
  background-image:radial-gradient(rgba(18,194,160,.18) 1px,transparent 1px);
  background-size:16px 16px;
  color:var(--paper);
}
.strip__label{
  flex:0 0 auto;
  padding-right:.9rem;
  border-right:var(--hairline-light);
  color:var(--jade);
  font-size:.72rem;
  letter-spacing:.22em;
}
.strip__track{
  flex:1 1 auto;
  display:flex;
  gap:1.6rem;
  overflow-x:auto;
  cursor:grab;
  scrollbar-width:none;
  -ms-overflow-style:none;
  touch-action:pan-x;
}
.strip__track::-webkit-scrollbar{display:none}
.strip__track.is-dragging{cursor:grabbing}
.strip__item{
  display:flex;
  align-items:baseline;
  gap:.45rem;
  white-space:nowrap;
  font-size:.82rem;
  transition:transform .2s var(--ease);
}
.strip__item.is-focus{transform:translateY(-1px)}
.strip__item.is-focus .strip__match{color:var(--white);font-weight:700}
.strip__time{
  color:var(--sand);
  font-weight:700;
  font-size:.95rem;
}
.strip__match{color:rgba(244,239,230,.9)}
.strip__vs{color:var(--jade);font-style:normal;padding:0 .18rem;font-size:.85em}
.strip__tag{color:rgba(244,239,230,.52);font-size:.7rem;letter-spacing:.12em}
.strip__calib{
  flex:0 0 auto;
  padding-left:.9rem;
  border-left:var(--hairline-light);
  color:rgba(244,239,230,.58);
  font-size:.7rem;
  letter-spacing:.08em;
}

/* ---------- 6. 悬浮胶囊导航 ---------- */
.nav-bar{
  position:relative;
  z-index:96;
  padding:.68rem clamp(.75rem,3vw,1.5rem) .78rem;
  background:inherit;
}
.site-header[data-scrolled] .nav-bar{background:transparent}
.nav-bar__inner{
  position:relative;
  display:flex;
  align-items:center;
  gap:clamp(.6rem,2vw,1.4rem);
  max-width:var(--wrap);
  margin-inline:auto;
  padding:.45rem .55rem .45rem .85rem;
  border:var(--bd);
  border-radius:var(--pill);
  background:var(--paper);
  box-shadow:5px 5px 0 var(--ink);
  transition:box-shadow .25s var(--ease),background .25s linear;
}
.site-header[data-scrolled] .nav-bar__inner{
  background:rgba(255,255,255,.72);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-soft);
}

.brand{display:flex;align-items:center;gap:.6rem;flex:0 0 auto}
.brand__text{display:block}
.brand__mark{
  display:grid;
  place-items:center;
  width:2.3rem;height:2.3rem;
  border-radius:50%;
  background:var(--ink);
  color:var(--jade);
  font-weight:900;
  font-size:1.02rem;
  line-height:1;
}
.brand__name{display:block;font-size:1.04rem;font-weight:900;letter-spacing:.08em;line-height:1.1}
.brand__tag{display:block;font-size:.64rem;letter-spacing:.2em;color:var(--slate);line-height:1.5}

.nav{
  position:relative;
  flex:1 1 auto;
  display:flex;
  justify-content:center;
}
.nav__list{display:flex;align-items:center;gap:clamp(.1rem,.8vw,.5rem)}
.nav__link{
  display:block;
  padding:.42rem .8rem;
  border-radius:var(--pill);
  font-size:.9rem;
  font-weight:600;
  letter-spacing:.05em;
  color:var(--ink);
  transition:background .18s linear,color .18s linear;
}
.nav__link:hover{background:var(--paper-2)}
.nav__link[aria-current="page"]{background:var(--ink);color:var(--paper)}

.nav__aside{
  position:absolute;
  top:calc(100% + .58rem);
  left:50%;
  z-index:6;
  width:min(520px,78vw);
  transform:translate(-50%,-10px);
  display:grid;
  gap:.5rem;
  padding:1.05rem 1.15rem 1.1rem;
  border:var(--bd);
  border-radius:20px;
  background:var(--night);
  background-image:radial-gradient(rgba(18,194,160,.22) 1px,transparent 1px);
  background-size:18px 18px;
  color:var(--paper);
  box-shadow:8px 8px 0 var(--ink);
  opacity:0;
  visibility:hidden;
  pointer-events:none;
  transition:opacity .2s linear,transform .22s var(--ease),visibility .2s linear;
}
.nav__aside-title{
  color:var(--jade);
  font-size:.7rem;
  letter-spacing:.26em;
}
.nav__aside-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.15rem .9rem}
.nav__aside-link{
  display:block;
  padding:.34rem .2rem;
  font-size:.9rem;
  color:rgba(244,239,230,.86);
  border-bottom:1px solid rgba(244,239,230,.14);
  transition:color .18s linear,border-color .18s linear;
}
.nav__aside-link:hover{color:var(--jade);border-color:var(--jade)}
.nav__aside-note{
  margin-top:.35rem;
  color:rgba(244,239,230,.52);
  font-size:.7rem;
  letter-spacing:.12em;
}
@media (min-width:901px){
  .nav-bar__inner:hover .nav__aside,
  .nav-bar__inner:focus-within .nav__aside{
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transform:translate(-50%,0);
  }
}

.nav-bar__actions{display:flex;align-items:center;gap:.5rem;flex:0 0 auto}
.nav-bar__cta{padding:.5rem .95rem;font-size:.82rem}

.nav-toggle{
  display:none;
  align-items:center;
  gap:.5rem;
  padding:.5rem .8rem;
  border:var(--bd-thin);
  border-radius:var(--pill);
  background:var(--ink);
  color:var(--paper);
}
.nav-toggle__bars{display:grid;gap:3px;width:16px}
.nav-toggle__bars i{display:block;height:2px;border-radius:2px;background:var(--jade);transition:transform .2s var(--ease),opacity .2s linear}
.nav-toggle__label{font-size:.78rem;letter-spacing:.14em}
.site-header[data-open] .nav-toggle__bars i:nth-child(1){transform:translateY(5px) rotate(45deg)}
.site-header[data-open] .nav-toggle__bars i:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle__bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

.nav-scrim{
  display:none;
  position:fixed;
  inset:0;
  z-index:80;
  background:rgba(11,20,24,.55);
  opacity:0;
  visibility:hidden;
  transition:opacity .25s linear,visibility .25s linear;
  cursor:default;
}

/* ---------- 7. 移动端抽屉 ---------- */
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .nav-bar{padding:.5rem .7rem .6rem}
  .nav-bar__inner{padding:.35rem .45rem .35rem .65rem;box-shadow:4px 4px 0 var(--ink)}

  .nav-scrim{display:block}
  .site-header[data-open] .nav-scrim{opacity:1;visibility:visible}

  .nav{
    position:fixed;
    top:0;right:0;bottom:0;
    width:min(370px,88vw);
    display:block;
    padding:5.9rem 1.4rem 2.5rem;
    border-left:var(--bd);
    background:var(--night);
    background-image:radial-gradient(rgba(18,194,160,.16) 1px,transparent 1px);
    background-size:20px 20px;
    color:var(--paper);
    overflow-y:auto;
    transform:translateX(102%);
    visibility:hidden;
    transition:transform .3s var(--ease),visibility .3s linear;
  }
  .site-header[data-open] .nav{transform:translateX(0);visibility:visible}

  .nav__list{display:grid;gap:0}
  .nav__link{
    padding:.85rem .2rem;
    border-radius:0;
    border-bottom:1px solid rgba(244,239,230,.16);
    color:var(--paper);
    font-size:1.08rem;
  }
  .nav__link:hover{background:transparent;color:var(--jade)}
  .nav__link[aria-current="page"]{
    background:transparent;
    color:var(--jade);
    box-shadow:inset 4px 0 0 var(--jade);
    padding-left:.9rem;
  }

  .nav__aside{
    position:static;
    transform:none;
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    width:auto;
    padding:1.5rem 0 0;
    border:0;
    border-radius:0;
    background:transparent;
    background-image:none;
    box-shadow:none;
    display:block;
  }
  .nav__aside-title{margin-bottom:.7rem}
  .nav__aside-list{grid-template-columns:1fr;gap:0}
  .nav__aside-link{padding:.55rem .2rem;border-bottom:1px dashed rgba(244,239,230,.16);font-size:.92rem}
  .nav__aside-note{margin-top:1.1rem}
}
@media (max-width:700px){
  .nav-bar__cta{display:none}
  .brand__tag{display:none}
}
@media (max-width:900px){
  .strip__calib{display:none}
}
@media (max-width:640px){
  .strip__tag{display:none}
  .strip{gap:.7rem}
}

/* ---------- 8. 页脚 ---------- */
.site-footer{
  position:relative;
  overflow:hidden;
  border-top:6px solid var(--jade);
  background-color:var(--ink);
  background-image:radial-gradient(rgba(18,194,160,.14) 1px,transparent 1px);
  background-size:22px 22px;
  color:var(--paper);
}
.footer__inner{
  position:relative;
  width:min(var(--wrap),100% - clamp(1.5rem,5vw,3rem));
  margin-inline:auto;
  padding:clamp(2.5rem,6vw,4.4rem) 0 1.4rem;
}
.footer__grid{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,1.75fr) minmax(0,1.3fr);
  gap:clamp(1.5rem,4vw,3.2rem);
}
.footer__claim{
  margin-top:1rem;
  max-width:32ch;
  color:rgba(244,239,230,.72);
  font-size:.94rem;
}
.footer__tags{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:1.1rem}
.footer__tag{
  padding:.2rem .7rem;
  border:1px solid rgba(244,239,230,.34);
  border-radius:var(--pill);
  color:rgba(244,239,230,.8);
  font-size:.72rem;
  letter-spacing:.1em;
}
.brand--footer .brand__mark{background:var(--jade);color:var(--ink)}
.brand--footer .brand__name{color:var(--paper)}
.brand--footer .brand__tag{color:rgba(244,239,230,.6)}

.footer__cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.4rem}
.footer__col-title{
  margin-bottom:.9rem;
  color:var(--jade);
  font-size:.75rem;
  font-weight:700;
  letter-spacing:.22em;
}
.footer__list{display:grid;gap:.5rem}
.footer__link{
  color:rgba(244,239,230,.82);
  font-size:.92rem;
  border-bottom:1px solid transparent;
  transition:color .18s linear,border-color .18s linear;
}
.footer__link:hover{color:var(--paper);border-color:var(--sand)}

.footer__contact{
  padding-left:clamp(1rem,3vw,1.6rem);
  border-left:2px solid rgba(244,239,230,.18);
}
.footer__contact-title{
  margin-bottom:.9rem;
  color:var(--sand);
  font-size:.75rem;
  font-weight:700;
  letter-spacing:.22em;
}
.footer__contact-item{margin-bottom:.75rem}
.footer__contact-label{
  display:block;
  color:var(--sand);
  font-size:.66rem;
  letter-spacing:.22em;
}
.footer__contact-value{
  display:block;
  color:rgba(244,239,230,.92);
  font-size:.9rem;
  line-height:1.6;
  word-break:break-word;
}
.footer__note{
  margin-top:.85rem;
  color:rgba(244,239,230,.58);
  font-size:.78rem;
  line-height:1.75;
}

.footer__legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:.7rem 1.5rem;
  margin-top:clamp(2rem,5vw,3rem);
  padding-top:1.2rem;
  border-top:1px solid rgba(244,239,230,.18);
}
.footer__legal-line{color:rgba(244,239,230,.62);font-size:.78rem;letter-spacing:.06em}
.footer__legal-links{display:flex;flex-wrap:wrap;gap:1rem}
.footer__legal-link{
  color:rgba(244,239,230,.74);
  font-size:.78rem;
  transition:color .18s linear;
}
.footer__legal-link:hover{color:var(--jade)}
.footer__copy{color:rgba(244,239,230,.5);font-size:.72rem;letter-spacing:.1em}

@media (max-width:1040px){
  .footer__grid{grid-template-columns:minmax(0,1fr)}
  .footer__contact{
    padding-left:0;
    padding-top:1.2rem;
    border-left:0;
    border-top:1px solid rgba(244,239,230,.18);
  }
}
@media (max-width:640px){
  .footer__cols{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* ---------- 9. 版面容器与网格 ---------- */
.wrap{width:min(var(--wrap),100% - clamp(1.5rem,5vw,3rem));margin-inline:auto}
.wrap--narrow{width:min(760px,100% - clamp(1.5rem,5vw,3rem));margin-inline:auto}
.prose{max-width:38em}
.prose p + p{margin-top:1rem}

.grid-editorial{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(.9rem,2.4vw,2rem);
  align-items:start;
}
.col-main{grid-column:1 / span 8}
.col-note{grid-column:9 / span 3}
.col-rail{grid-column:12 / span 1}
.rail-note{
  writing-mode:vertical-rl;
  text-orientation:mixed;
  letter-spacing:.32em;
  color:var(--slate);
  font-size:.72rem;
  padding-top:.4rem;
}
@media (max-width:1000px){
  .col-main,.col-note{grid-column:1 / -1}
  .col-rail{grid-column:1 / -1}
  .rail-note{writing-mode:horizontal-tb;letter-spacing:.24em}
}

.section{padding-block:clamp(2.5rem,6vw,5rem)}
.section--ink{background:var(--ink);color:var(--paper)}
.section--night{background:var(--night);color:var(--paper)}
.section--paper2{background:var(--paper-2)}
.section--ink .chapter__num,.section--night .chapter__num{color:var(--jade)}
.section--ink .chapter__eyebrow,.section--night .chapter__eyebrow{color:rgba(244,239,230,.6)}
.section--ink .chapter__lede,.section--night .chapter__lede{color:rgba(244,239,230,.74)}
.section--ink .card,.section--night .card{border-color:var(--ink)}
.section--ink :focus-visible,.section--night :focus-visible{outline-color:var(--sand)}

/* ---------- 10. 编号章节 ---------- */
.chapter{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:clamp(1rem,3vw,2.4rem);
  align-items:start;
}
.chapter__num{
  font-size:clamp(3rem,9vw,7rem);
  font-weight:900;
  line-height:.85;
  letter-spacing:-.04em;
  color:var(--ink);
}
.chapter__eyebrow{
  margin-bottom:.7rem;
  color:var(--slate);
  font-size:.72rem;
  letter-spacing:.26em;
}
.chapter__title{font-size:clamp(1.55rem,4vw,2.8rem)}
.chapter__lede{
  margin-top:.9rem;
  max-width:38ch;
  color:var(--slate);
  font-size:1.02rem;
}
@media (max-width:560px){
  .chapter{grid-template-columns:minmax(0,1fr);gap:.6rem}
  .chapter__num{font-size:3.4rem}
}

/* ---------- 11. 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.5rem;
  padding-block:1rem;
  color:var(--slate);
  font-size:.76rem;
  letter-spacing:.14em;
}
.breadcrumb a{border-bottom:1px solid transparent}
.breadcrumb a:hover{color:var(--jade-deep);border-color:var(--jade-deep)}
.breadcrumb__sep{opacity:.5}
.breadcrumb [aria-current="page"]{color:var(--ink)}

/* ---------- 12. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.4rem;
  padding:.6rem 1.15rem;
  border:var(--bd-thin);
  border-radius:var(--pill);
  font-size:.86rem;
  font-weight:700;
  letter-spacing:.06em;
  text-align:center;
  transition:transform .16s var(--ease),background .18s linear,color .18s linear,box-shadow .18s linear;
}
.btn--sm{padding:.36rem .8rem;font-size:.76rem}
.btn--ink{background:var(--ink);color:var(--paper);box-shadow:4px 4px 0 rgba(11,20,24,.28)}
.btn--ink:hover{background:var(--night);transform:translate(-1px,-1px);box-shadow:5px 5px 0 rgba(11,20,24,.3)}
.btn--jade{background:var(--jade);color:var(--ink);box-shadow:4px 4px 0 var(--ink)}
.btn--jade:hover{background:var(--jade-deep);color:var(--paper);transform:translate(-1px,-1px);box-shadow:5px 5px 0 var(--ink)}
.btn--sand{background:var(--sand);color:var(--ink);box-shadow:4px 4px 0 var(--ink)}
.btn--sand:hover{background:var(--sand-soft);transform:translate(-1px,-1px);box-shadow:5px 5px 0 var(--ink)}
.btn--ghost{background:var(--sand-soft);color:var(--ink);box-shadow:3px 3px 0 var(--ink)}
.btn--ghost:hover{background:var(--sand);transform:translate(-1px,-1px);box-shadow:4px 4px 0 var(--ink)}
.btn--line{background:transparent;color:var(--ink)}
.btn--line:hover{background:var(--ink);color:var(--paper)}

/* ---------- 13. 标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  padding:.2rem .68rem;
  border:var(--bd-thin);
  border-radius:var(--pill);
  font-size:.72rem;
  font-weight:700;
  letter-spacing:.1em;
  line-height:1.7;
}
.tag--jade{background:var(--jade);color:var(--ink)}
.tag--sand{background:var(--sand);color:var(--ink)}
.tag--clay{background:var(--clay);color:var(--white);border-color:var(--clay)}
.tag--night{background:var(--night);color:var(--paper);border-color:var(--night)}

/* ---------- 14. 卡片 ---------- */
.card{
  padding:clamp(1rem,3vw,1.6rem);
  border:var(--bd);
  border-radius:var(--radius);
  background:var(--paper);
  box-shadow:var(--shadow-hard);
}
.card--ink{background:var(--night);color:var(--paper)}
.card__title{font-size:1.12rem;font-weight:900}
.card__meta{margin-top:.4rem;color:var(--slate);font-size:.76rem;letter-spacing:.12em}
.card--ink .card__meta{color:rgba(244,239,230,.66)}

/* ---------- 15. 数据条 ---------- */
.data-bar{display:grid;gap:.35rem}
.data-bar__track{
  height:10px;
  border:2px solid var(--ink);
  border-radius:var(--pill);
  background:var(--paper-2);
  overflow:hidden;
}
.data-bar__fill{
  display:block;
  height:100%;
  width:var(--value,50%);
  background:var(--jade);
}
.data-bar__meta{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:1rem;
  color:var(--slate);
  font-size:.76rem;
  letter-spacing:.06em;
}
.data-bar__value{font-weight:700;color:var(--ink)}

/* ---------- 16. 榜单阶梯 ---------- */
.rank-list{display:grid;gap:.5rem}
.rank-item{
  display:grid;
  grid-template-columns:3.2rem minmax(0,1fr) auto;
  align-items:center;
  gap:1rem;
  padding:.7rem 1rem;
  border:var(--bd-thin);
  border-radius:12px;
  background:var(--paper);
}
.rank-item__no{font-size:1.35rem;font-weight:900;color:var(--sand)}
.rank-item__name{font-weight:700}
.rank-item__stat{font-weight:700}
.rank-item__delta{font-size:.74rem;letter-spacing:.08em;color:var(--slate)}
.rank-item__delta.is-up{color:var(--jade-deep)}
.rank-item__delta.is-down{color:var(--clay)}

/* ---------- 17. 四步进度 ---------- */
.steps{display:grid;gap:.9rem}
.step{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:1rem;
  padding:1rem 1.1rem;
  border:var(--bd);
  border-radius:var(--radius);
  background:var(--paper);
  transition:background .2s linear,box-shadow .2s var(--ease);
}
.step.is-done{background:var(--sand-soft);box-shadow:5px 5px 0 var(--ink)}
.step__num{
  display:grid;
  place-items:center;
  width:2.2rem;height:2.2rem;
  border-radius:50%;
  background:var(--ink);
  color:var(--jade);
  font-weight:700;
}
.step.is-done .step__num{background:var(--jade-deep);color:var(--white)}
.step__title{font-weight:800}
.step__body{color:var(--slate);font-size:.92rem}

/* ---------- 18. 可展开内容组 ---------- */
.accordion{border-top:var(--bd)}
.accordion__item{border-bottom:2px solid var(--ink)}
.accordion__trigger{
  display:flex;
  width:100%;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  padding:1.05rem .2rem;
  text-align:left;
  font-size:1.02rem;
  font-weight:800;
}
.accordion__trigger::after{
  content:"+";
  font-family:var(--font-mono);
  font-size:1.3rem;
  line-height:1;
  color:var(--jade-deep);
  transition:color .18s linear,transform .2s var(--ease);
}
.accordion__trigger[aria-expanded="true"]::after{content:"–";color:var(--clay);transform:rotate(180deg)}
.accordion__panel{
  padding:0 .2rem 1.15rem;
  color:var(--slate);
  font-size:.95rem;
  animation:panel-in .22s var(--ease) both;
}
@keyframes panel-in{
  from{opacity:0;transform:translateY(-6px)}
  to{opacity:1;transform:none}
}

/* ---------- 19. 标签页 ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:.3rem;border-bottom:var(--bd)}
.tab{
  padding:.58rem 1.1rem;
  border:var(--bd-thin);
  border-bottom:0;
  border-radius:12px 12px 0 0;
  background:var(--paper-2);
  font-size:.86rem;
  font-weight:700;
  letter-spacing:.06em;
  transform:translateY(3px);
  transition:background .18s linear,color .18s linear;
}
.tab:hover{background:var(--sand-soft)}
.tab[aria-selected="true"]{background:var(--ink);color:var(--paper)}
.tab-panel{padding-top:1.4rem}

/* ---------- 20. 图片容器 ---------- */
.media{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/9;
  border:var(--bd);
  border-radius:var(--radius);
  background:var(--night);
}
.media--tall{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media img{width:100%;height:100%;object-fit:cover}
.media::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:radial-gradient(rgba(11,20,24,.34) 1px,transparent 1px);
  background-size:3px 3px;
  opacity:.34;
}
.media__caption{
  position:absolute;
  left:0;bottom:0;
  z-index:2;
  padding:.35rem .8rem;
  background:var(--ink);
  color:var(--paper);
  font-size:.7rem;
  letter-spacing:.14em;
}

/* ---------- 21. 复制按钮 ---------- */
.copy-btn{
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  padding:.26rem .7rem;
  border:var(--bd-thin);
  border-radius:var(--pill);
  background:var(--paper);
  font-size:.72rem;
  font-weight:700;
  letter-spacing:.08em;
  transition:background .18s linear,border-color .18s linear,color .18s linear;
}
.copy-btn:hover{background:var(--paper-2)}
.copy-btn.is-copied{background:var(--jade);border-color:var(--jade-deep);color:var(--ink)}

/* ---------- 22. 显现 ---------- */
.reveal-ready [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .55s var(--ease),transform .55s var(--ease);
}
.reveal-ready [data-reveal].is-in{opacity:1;transform:none}

/* ---------- 23. 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  .reveal-ready [data-reveal]{opacity:1!important;transform:none!important}
}