@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root{
  --ink:#000000;
  --paper:#ffffff;
  --line:#000000;
  --unit:8px;
  --gap:1rem;
  --radius:18px;
}

*,*::before,*::after{box-sizing:border-box}

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

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'Space Grotesk',Helvetica,Arial,'PingFang SC','Microsoft YaHei',sans-serif;
  font-size:17px;
  line-height:1.6;
  letter-spacing:.01em;
}

img{display:block;max-width:100%;height:auto}
a{color:inherit}
p{margin:0 0 var(--gap)}
h1,h2,h3{line-height:1.06;letter-spacing:-.02em;margin:0}
h1{font-size:clamp(2.3rem,6.2vw,4.9rem);font-weight:700;text-transform:uppercase}
h2{font-size:clamp(1.35rem,2.6vw,1.95rem);font-weight:700;text-transform:uppercase}
h3{font-size:1.12rem;font-weight:600}
menu{list-style:none;margin:0;padding:0}

:focus-visible{outline:3px solid var(--ink);outline-offset:3px}

/* ---------- 页头：详情菜单 + 居中品牌 + 右主按钮 ---------- */
.hdr{
  position:sticky;
  top:0;
  z-index:20;
  background:var(--paper);
  border-bottom:2px solid var(--line);
}

.hdr__in{
  max-width:1440px;
  margin:0 auto;
  padding:.55rem 1rem;
  min-height:64px;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:var(--gap);
}

.nav{grid-column:1;justify-self:start;position:relative;min-width:0}

.nav__btn{
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  min-height:44px;
  padding:.45rem .7rem;
  border:2px solid var(--line);
  font-size:.82rem;
  font-weight:600;
  letter-spacing:.1em;
  text-transform:uppercase;
  cursor:pointer;
  list-style:none;
  user-select:none;
}
.nav__btn::-webkit-details-marker{display:none}
.nav__btn:hover{background:var(--ink);color:var(--paper)}
.nav__btn:hover .nav__bars{background:var(--paper);box-shadow:0 -6px 0 var(--paper),0 6px 0 var(--paper)}

.nav__bars{
  display:block;
  width:18px;
  height:2px;
  background:var(--ink);
  box-shadow:0 -6px 0 var(--ink),0 6px 0 var(--ink);
}

.nav__list{
  display:flex;
  flex-wrap:wrap;
  gap:.1rem .35rem;
  margin-top:.35rem;
}

.nav__a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:.35rem .45rem;
  font-size:.84rem;
  text-decoration:none;
  border-bottom:2px solid transparent;
}
.nav__a:hover,.nav__a:focus-visible{border-bottom-color:var(--ink)}

.brand{
  grid-column:2;
  justify-self:center;
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  min-height:44px;
  text-decoration:none;
  font-weight:700;
  font-size:1.02rem;
  letter-spacing:-.01em;
  text-transform:uppercase;
}
.brand__mark{display:block;width:14px;height:14px;background:var(--ink)}

.cta{
  grid-column:3;
  justify-self:end;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:.45rem 1rem;
  background:var(--ink);
  color:var(--paper);
  border:2px solid var(--ink);
  border-radius:var(--radius);
  font-size:.82rem;
  font-weight:600;
  letter-spacing:.08em;
  text-transform:uppercase;
  text-decoration:none;
}
.cta:hover{background:var(--paper);color:var(--ink)}

/* ---------- 开屏：点阵底纹 + 右对齐大字 ---------- */
.hero{
  border-bottom:2px solid var(--line);
  background-image:radial-gradient(rgba(0,0,0,.3) 1px,transparent 1px);
  background-size:16px 16px;
  background-position:0 0;
}

.hero__in{
  max-width:1440px;
  margin:0 auto;
  padding:7vh 1rem;
  min-height:70vh;
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:var(--gap);
  align-content:center;
}

.hero__media{grid-column:1/4;align-self:center}
.hero__pic{
  width:100%;
  max-width:220px;
  aspect-ratio:1/1;
  object-fit:cover;
  border:2px solid var(--line);
  border-radius:var(--radius);
}

.hero__copy{grid-column:4/-1;text-align:right}
.hero__lead{
  margin:1.25rem 0 0 auto;
  max-width:44ch;
  font-size:1.02rem;
  text-align:right;
}

/* ---------- 走马条 ---------- */
.ticker{
  overflow:hidden;
  background:var(--ink);
  color:var(--paper);
  border-bottom:2px solid var(--line);
}

.ticker__row{
  display:flex;
  gap:2rem;
  width:max-content;
  padding:.55rem 1rem;
  font-size:.76rem;
  letter-spacing:.2em;
  text-transform:uppercase;
  animation:slide 26s linear infinite;
}

.tick{white-space:nowrap}

@keyframes slide{
  from{transform:translateX(0)}
  to{transform:translateX(-50%)}
}

/* ---------- 版心：正文 + 右侧边栏 ---------- */
.wrap{max-width:1440px;margin:0 auto;padding:2rem 1rem 4rem}

.content{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(240px,300px);
  gap:2rem;
  align-items:start;
}

.prose{
  min-width:0;
  display:grid;
  gap:2rem;
}

.prose section{
  scroll-margin-top:104px;
  padding-bottom:1.5rem;
  border-bottom:4px solid var(--ink);
  border-radius:var(--radius);
  animation:rise .55s ease both;
}

.prose section:nth-child(2){animation-delay:.06s}
.prose section:nth-child(3){animation-delay:.12s}
.prose section:nth-child(4){animation-delay:.18s}
.prose section:nth-child(5){animation-delay:.24s}
.prose section:nth-child(6){animation-delay:.3s}
.prose section:nth-child(7){animation-delay:.36s}

@keyframes rise{
  from{opacity:0;transform:translateY(14px)}
  to{opacity:1;transform:none}
}

.prose section > :last-child{margin-bottom:0}
.prose h2{margin-bottom:.55rem}
.prose h3{margin:1.25rem 0 .4rem}
.prose ul,.prose ol{padding-left:1.15rem;margin:0 0 var(--gap)}
.prose li{margin-bottom:.35rem}
.prose a{text-decoration:underline;text-underline-offset:3px}
.prose blockquote{
  margin:0 0 var(--gap);
  padding:.4rem 0 .4rem 1rem;
  border-left:4px solid var(--ink);
  font-size:1.02rem;
}
.prose table{width:100%;border-collapse:collapse;margin-bottom:var(--gap);font-size:.95rem}
.prose th,.prose td{border-bottom:1px solid rgba(0,0,0,.25);padding:.5rem .4rem;text-align:left}
.prose th{border-bottom:2px solid var(--ink);text-transform:uppercase;font-size:.8rem;letter-spacing:.08em}
.prose code{font-size:.92em;background:rgba(0,0,0,.06);padding:.1em .3em}
.prose figure{margin:0 0 var(--gap)}
.prose figcaption{font-size:.8rem;letter-spacing:.06em;margin-top:.4rem;opacity:.7}

.rail{
  position:sticky;
  top:92px;
  padding-left:1rem;
  border-left:2px solid var(--line);
}

.rail__h{font-size:1.05rem}
.subtitle{
  font-size:.78rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  opacity:.65;
  margin:.3rem 0 1rem;
}

.rail__list{display:grid;gap:.1rem}

.rail__list a{
  display:flex;
  align-items:baseline;
  gap:.6rem;
  min-height:40px;
  padding:.4rem 0;
  font-size:.92rem;
  text-decoration:none;
  border-bottom:1px solid rgba(0,0,0,.16);
}
.rail__list a:hover{border-bottom-color:var(--ink)}

.rail__n{
  font-size:.7rem;
  letter-spacing:.12em;
  opacity:.55;
  font-variant-numeric:tabular-nums;
}

/* ---------- 页脚：四分区直挂 footer ---------- */
.foot{
  border-top:2px solid var(--line);
  max-width:1440px;
  margin:0 auto;
  padding:2rem 1rem 1rem;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:var(--gap);
}

.foot__s{
  min-width:0;
  border-top:4px solid var(--ink);
  padding-top:.65rem;
}

.foot__brand{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  margin:0;
  font-weight:700;
  font-size:.95rem;
  text-transform:uppercase;
}

.mark{display:block;width:12px;height:12px;background:var(--ink)}

.foot__list{display:grid;gap:.1rem}

.foot__list a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  font-size:.9rem;
  text-decoration:none;
}
.foot__list a:hover{text-decoration:underline;text-underline-offset:3px}

.foot__top{margin:0}
.foot__top a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  font-size:.9rem;
  text-decoration:none;
  border-bottom:2px solid var(--ink);
}

.foot__base{
  grid-column:1/-1;
  margin:1rem 0 0;
  padding-top:.75rem;
  border-top:1px solid var(--line);
  font-size:.76rem;
  letter-spacing:.12em;
  text-transform:uppercase;
}

/* ---------- 窄屏 ---------- */
@media (max-width:900px){
  .hdr__in{
    grid-template-columns:1fr auto;
    grid-template-rows:auto auto;
    padding:.5rem .75rem;
  }
  .brand{grid-column:1;grid-row:1;justify-self:start}
  .cta{grid-column:2;grid-row:1}
  .nav{grid-column:1/-1;grid-row:2;justify-self:stretch}
  .nav__list{
    margin-top:.4rem;
    padding-top:.4rem;
    border-top:1px solid rgba(0,0,0,.2);
    gap:0 .1rem;
  }
  .nav__a{min-height:44px;padding:.35rem .5rem;font-size:.86rem}

  .hero__in{padding:5vh 1rem;min-height:62vh}
  .hero__media{grid-column:1/-1;grid-row:1}
  .hero__pic{max-width:140px;aspect-ratio:1/1}
  .hero__copy{grid-column:1/-1;grid-row:2;text-align:left}
  .hero__lead{margin-left:0;text-align:left;max-width:none}

  .wrap{padding:1.5rem 1rem 3rem}
  .content{grid-template-columns:1fr;gap:2.5rem}
  .rail{
    position:static;
    padding-left:0;
    padding-top:1rem;
    border-left:0;
    border-top:2px solid var(--line);
  }
  .prose section{scroll-margin-top:190px}

  .foot{grid-template-columns:repeat(2,1fr)}
}

@media (max-width:520px){
  .cta{padding:.45rem .7rem;font-size:.76rem}
  .hero__pic{display:none}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .ticker__row{animation:none}
  .prose section{animation:none}
}
</｜DSML｜ parameter>
</｜DSML｜ invoke>
</｜DSML｜ calls>

button[aria-expanded]{min-width:44px;min-height:44px}