:root{
  --ink:#26171a;
  --ink-soft:#332026;
  --rose:#eb879c;
  --pink:#ffb6c1;
  --text:#f7eaec;
  --muted:#cbaeb4;
  --line:rgba(255,182,193,.20);
  --glass:linear-gradient(158deg,rgba(255,255,255,.085),rgba(255,255,255,.022));
  --shadow:0 2px 4px rgba(0,0,0,.34),0 22px 46px -26px rgba(0,0,0,.78),inset 0 1px 0 rgba(255,255,255,.09);
  --r:10px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  min-height:100vh;
  color:var(--text);
  font-size:17px;
  line-height:1.75;
  font-family:"DM Sans",system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background-color:var(--ink);
  background-image:
    radial-gradient(920px 600px at 6% -10%,rgba(235,135,156,.24),transparent 62%),
    radial-gradient(760px 520px at 102% 2%,rgba(255,182,193,.15),transparent 60%),
    radial-gradient(900px 820px at 48% 122%,rgba(235,135,156,.14),transparent 66%);
  background-attachment:fixed;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--pink)}
:focus-visible{outline:3px solid var(--pink);outline-offset:3px;border-radius:8px}
[id]{scroll-margin-top:104px}

/* 左侧竖排栏 */
.rail{
  position:fixed;
  top:18px;bottom:18px;left:18px;
  width:206px;
  z-index:40;
  display:flex;
  flex-direction:column;
  gap:14px;
  padding:16px 14px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r);
  box-shadow:var(--shadow);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  overflow-y:auto;
}
.mark{
  display:grid;
  place-items:center;
  min-height:48px;
  padding:6px 10px;
  border-radius:var(--r);
  border:1px solid var(--line);
  background:linear-gradient(150deg,rgba(235,135,156,.24),rgba(255,182,193,.08));
  color:var(--pink);
  font-family:"Space Grotesk",system-ui,sans-serif;
  font-size:13px;
  font-weight:700;
  letter-spacing:.04em;
  text-align:center;
  text-decoration:none;
  line-height:1.2;
}
.mark img{width:44px;height:44px;object-fit:contain;border-radius:8px}
.drawer{display:block}
.drawer summary{
  list-style:none;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:8px;
  min-height:44px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.055);
  color:var(--text);
  font-size:16px;
  cursor:pointer;
  transition:background .22s ease,border-color .22s ease;
}
.drawer summary::-webkit-details-marker{display:none}
.drawer summary::after{content:"＋";color:var(--rose);font-size:15px}
.drawer[open] summary::after{content:"－"}
.drawer summary:hover{background:rgba(235,135,156,.2);border-color:rgba(255,182,193,.4)}
menu.pills{list-style:none;margin:10px 0 0;padding:0;display:grid;gap:8px}
menu.pills li a{
  display:flex;
  align-items:center;
  min-height:42px;
  padding:9px 14px;
  border-radius:999px;
  border:1px solid transparent;
  background:rgba(255,255,255,.04);
  color:var(--text);
  font-size:16px;
  line-height:1.3;
  text-decoration:none;
  transition:background .22s ease,border-color .22s ease,transform .22s ease;
}
menu.pills li a:hover{background:rgba(235,135,156,.2);border-color:var(--line);transform:translateX(2px)}
.contact{
  margin-top:auto;
  display:grid;
  place-items:center;
  min-height:44px;
  padding:8px 14px;
  border-radius:999px;
  background:linear-gradient(120deg,var(--rose),var(--pink));
  color:#2a1518;
  font-weight:700;
  font-size:16px;
  text-decoration:none;
  box-shadow:0 12px 26px -16px rgba(235,135,156,.95);
  transition:transform .22s ease,box-shadow .22s ease;
}
.contact:hover{transform:translateY(-1px);box-shadow:0 16px 30px -14px rgba(235,135,156,1)}

/* 主体 */
.main{
  margin:0 0 0 244px;
  padding:22px 26px 56px 0;
  display:grid;
  grid-template-columns:190px minmax(0,1fr);
  gap:26px;
  align-items:start;
  max-width:1240px;
}
.aside{
  position:sticky;
  top:22px;
  padding:16px 14px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r);
  box-shadow:var(--shadow);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.aside small,.prose small{
  display:block;
  font-family:"Space Grotesk",system-ui,sans-serif;
  font-size:11px;
  font-weight:600;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--rose);
}
.aside h2{
  margin:.15em 0 .75em;
  font-size:1.12rem;
  font-weight:600;
  letter-spacing:-.01em;
}
.index{list-style:none;margin:0;padding:0;display:grid;gap:4px;counter-reset:ix}
.index a{
  display:flex;
  align-items:center;
  gap:9px;
  min-height:40px;
  padding:6px 8px;
  border-radius:8px;
  color:var(--muted);
  font-size:16px;
  line-height:1.35;
  text-decoration:none;
  transition:color .2s ease,background .2s ease;
}
.index a:hover{color:var(--text);background:rgba(235,135,156,.14)}
.index .n{font-family:"Space Grotesk",system-ui,sans-serif;font-size:11px;font-weight:600;color:var(--rose);min-width:18px}

.article{display:grid;gap:26px;max-width:900px;min-width:0}

/* 首屏 */
.hero{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:24px;
  align-items:center;
  padding:26px;
  min-height:45vh;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r);
  box-shadow:var(--shadow);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.hero--solo{grid-template-columns:1fr}
.hero-copy{display:grid;justify-items:center;gap:16px;text-align:center}
.hero h1{
  margin:0;
  font-family:"Space Grotesk",system-ui,sans-serif;
  font-size:clamp(1.9rem,4.4vw,3rem);
  line-height:1.12;
  letter-spacing:-.025em;
  background:linear-gradient(140deg,#fff 12%,var(--pink) 58%,var(--rose));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.lede{margin:0;max-width:44ch;color:var(--muted);font-size:16.5px}
.cta{
  display:inline-grid;
  place-items:center;
  min-height:44px;
  padding:11px 28px;
  border-radius:999px;
  background:linear-gradient(120deg,var(--rose),var(--pink));
  color:#2a1518;
  font-weight:700;
  font-size:16px;
  text-decoration:none;
  box-shadow:0 12px 26px -16px rgba(235,135,156,.95);
  transition:transform .22s ease,box-shadow .22s ease;
}
.cta:hover{transform:translateY(-2px);box-shadow:0 18px 32px -14px rgba(235,135,156,1)}
.hero-art{
  position:relative;
  margin:0;
  border-radius:var(--r);
  overflow:hidden;
  aspect-ratio:4/3;
  min-height:190px;
  background:rgba(255,182,193,.09);
  border:1px solid rgba(255,182,193,.16);
}
.hero-img{width:100%;height:100%;object-fit:cover}
.chip{
  position:absolute;
  top:12px;right:12px;
  padding:5px 14px;
  border-radius:999px;
  background:rgba(38,23,26,.66);
  border:1px solid var(--line);
  color:var(--pink);
  font-size:13px;
  line-height:1.5;
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
}

/* 正文 */
.prose{
  padding:28px 26px 34px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r);
  box-shadow:var(--shadow);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  font-size:17px;
  overflow-wrap:break-word;
}
.prose > section{
  padding:6px 0 30px;
  border-top:1px solid rgba(255,182,193,.14);
}
.prose > section:first-child{border-top:0;padding-top:0}
.prose > section:last-child{padding-bottom:0}
.prose h2{
  margin:.35em 0 .75em;
  font-family:"Space Grotesk",system-ui,sans-serif;
  font-size:1.42rem;
  line-height:1.35;
  letter-spacing:-.015em;
}
.prose small + h2{margin-top:.3em}
.prose h3{
  margin:1.5em 0 .6em;
  font-size:1.14rem;
  line-height:1.45;
  color:var(--pink);
}
.prose p{margin:0 0 1.05em}
.prose p:last-child{margin-bottom:0}
.prose ul,.prose ol{margin:0 0 1.1em;padding-left:1.3em}
.prose li{margin:.35em 0}
.prose li::marker{color:var(--rose)}
.prose blockquote{
  margin:1.2em 0;
  padding:12px 18px;
  border-left:3px solid var(--rose);
  border-radius:0 var(--r) var(--r) 0;
  background:rgba(255,182,193,.08);
  color:var(--text);
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:var(--r);margin:1.1em 0}
.prose table{width:100%;border-collapse:collapse;font-size:15.5px;margin:1em 0}
.prose th,.prose td{padding:9px 10px;border-bottom:1px solid var(--line);text-align:left}
.prose code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.92em;background:rgba(255,255,255,.08);padding:1px 5px;border-radius:5px}
.prose pre{overflow-x:auto;padding:14px;border-radius:var(--r);background:rgba(0,0,0,.34)}
.prose pre code{background:none;padding:0}
.prose a{text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(255,182,193,.5)}
.prose a:hover{color:#fff}

/* 页脚 */
.foot{
  margin:0 0 0 244px;
  padding:0 26px 44px 0;
  max-width:1240px;
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.3fr;
  gap:18px;
}
.foot section{
  padding:20px 18px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r);
  box-shadow:var(--shadow);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.f-brand{display:grid;place-items:center}
.f-mark{
  font-family:"Space Grotesk",system-ui,sans-serif;
  font-size:1.05rem;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--pink);
  text-align:center;
}
.f-col h3{
  margin:0 0 .7em;
  font-size:13px;
  font-weight:600;
  letter-spacing:.2em;
  color:var(--rose);
}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.foot ul a{
  display:flex;
  align-items:center;
  min-height:40px;
  padding:4px 6px;
  border-radius:8px;
  color:var(--muted);
  font-size:16px;
  line-height:1.35;
  text-decoration:none;
  transition:color .2s ease,background .2s ease;
}
.foot ul a:hover{color:var(--text);background:rgba(235,135,156,.16)}
.f-cta{display:grid;place-items:center;background:linear-gradient(150deg,rgba(235,135,156,.26),rgba(255,182,193,.07))!important}
.f-cta-link{
  font-family:"Space Grotesk",system-ui,sans-serif;
  font-size:clamp(1.15rem,2.2vw,1.7rem);
  font-weight:700;
  line-height:1.25;
  letter-spacing:-.02em;
  color:#fff;
  text-align:center;
  text-decoration:none;
}
.f-cta-link:hover{color:var(--pink)}
.f-base{grid-column:1/-1;display:grid;place-items:center;padding:10px 0 0}
.copy{margin:0;color:var(--muted);font-size:14.5px;letter-spacing:.02em}

/* 动效 */
.js .reveal{opacity:0;transform:translateY(14px);transition:opacity .28s ease,transform .28s ease}
.js .reveal.in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none}
  *{transition-duration:.01ms!important}
}

/* 中等屏：竖栏改顶栏 */
@media (max-width:1080px){
  .rail{
    position:sticky;
    top:0;bottom:auto;left:auto;
    width:auto;
    margin:12px;
    flex-direction:row;
    align-items:center;
    gap:10px;
    padding:10px;
    overflow:visible;
    border-radius:var(--r);
  }
  .mark{min-height:44px;padding:4px 12px;font-size:12px}
  .mark img{width:34px;height:34px}
  .drawer{flex:1 1 auto}
  .drawer summary{width:100%}
  menu.pills{
    position:absolute;
    left:12px;right:12px;
    top:calc(100% + 8px);
    margin:0;
    padding:10px;
    background:rgba(38,23,26,.96);
    border:1px solid var(--line);
    border-radius:var(--r);
    box-shadow:var(--shadow);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
  }
  .contact{margin-top:0;min-height:44px;padding:0 20px;flex:0 0 auto}
  .main{margin:0;padding:6px 12px 40px;grid-template-columns:minmax(0,1fr);gap:16px}
  .aside{position:static}
  .index{grid-template-columns:1fr 1fr}
  .foot{margin:0;padding:0 12px 36px;grid-template-columns:1fr 1fr;gap:12px}
  .f-brand,.f-cta{grid-column:1/-1}
  [id]{scroll-margin-top:76px}
}

/* 窄屏 */
@media (max-width:640px){
  body{font-size:16.5px}
  .main{padding:6px 10px 32px}
  .foot{padding:0 10px 30px}
  .hero{grid-template-columns:1fr;padding:20px;min-height:0;gap:18px}
  .hero h1{font-size:clamp(1.75rem,7.8vw,2.3rem)}
  .hero-art{aspect-ratio:16/10;min-height:160px}
  .prose{padding:22px 18px 28px}
  .index{grid-template-columns:1fr}
  .foot section{padding:16px 14px}
}

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