:root{
  --peach:#eb879c;
  --peach-2:#ffb6c1;
  --peach-ink:#a44257;
  --ink:#26171a;
  --paper:#fff7f8;
  --card:#fffdfd;
  --muted:#6d5257;
  --line:#e7cdd3;
  --r:28px;
}
*,*::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:"Nunito Sans",system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
h1,h2,h3,.brand,.cta,.hero-more,.drawer-brand,.drawer-nav a,.foot-brand,.side-title{
  font-family:"Varela Round","Nunito Sans",system-ui,sans-serif;
  font-weight:400;
}
a{color:var(--peach-ink)}
p{margin:0 0 1em}
:focus-visible{outline:3px solid var(--peach);outline-offset:3px;border-radius:8px}

/* 顶栏 */
.topbar{
  position:sticky;top:0;z-index:60;
  background:rgba(255,247,248,.94);
  backdrop-filter:blur(9px);
  border-bottom:1.5px solid var(--line);
}
.top-row{padding:8px clamp(16px,4vw,40px) 0}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  min-height:40px;padding:4px 0;
  color:var(--ink);text-decoration:none;
  font-size:1.16rem;letter-spacing:.03em;
}
.brand img{width:36px;height:36px;border-radius:12px;border:1.5px solid var(--line);object-fit:cover}
.menu-row{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:4px clamp(16px,4vw,40px) 9px;
}
.burger{
  display:inline-flex;align-items:center;gap:10px;
  min-height:44px;padding:10px 18px;
  border:1.5px solid var(--ink);border-radius:999px;
  background:transparent;color:var(--ink);
  font:inherit;font-size:.94rem;cursor:pointer;
  transition:background .22s ease,color .22s ease;
}
.burger:hover{background:var(--ink);color:var(--peach-2)}
.burger-ico{position:relative;width:18px;height:2px;background:currentColor}
.burger-ico::before,.burger-ico::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;
}
.burger-ico::before{top:-6px}
.burger-ico::after{top:6px}
.cta{
  display:inline-flex;align-items:center;
  min-height:44px;padding:10px 22px;
  border-radius:999px;background:var(--ink);color:#ffe6ec;
  text-decoration:none;font-size:.94rem;
  transition:background .22s ease,transform .22s ease;
}
.cta:hover{background:#432b31;transform:translateY(-1px)}

/* 抽屉 */
.drawer{
  position:fixed;inset:0;z-index:90;
  display:flex;flex-direction:column;gap:20px;
  padding:clamp(18px,5vw,44px);
  background:linear-gradient(165deg,#331f24,#26171a 58%);
  color:#ffe9ee;
  overflow-y:auto;
  transform:translateY(-102%);
  visibility:hidden;
  transition:transform .28s ease,visibility .28s ease;
}
.menu-open .drawer{transform:none;visibility:visible}
body.menu-open{overflow:hidden}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-bottom:14px;border-bottom:1.5px solid rgba(255,214,224,.24);
}
.drawer-brand{font-size:1.2rem;color:var(--peach-2);letter-spacing:.04em}
.drawer-close{
  min-height:44px;padding:10px 18px;
  border:1.5px solid rgba(255,214,224,.5);border-radius:999px;
  background:transparent;color:#ffe9ee;font:inherit;font-size:.94rem;cursor:pointer;
  transition:background .22s ease;
}
.drawer-close:hover{background:rgba(255,182,193,.18)}
.drawer-nav ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.drawer-nav a{
  display:flex;align-items:center;
  min-height:48px;padding:13px 18px;
  border:1.5px solid rgba(255,214,224,.22);border-radius:18px;
  color:#ffe9ee;text-decoration:none;font-size:1.06rem;
  transition:background .22s ease,border-color .22s ease;
}
.drawer-nav a:hover{background:rgba(235,135,156,.22);border-color:var(--peach-2)}
.drawer-cta{
  align-self:flex-start;margin-top:auto;
  display:inline-flex;align-items:center;min-height:48px;
  padding:12px 26px;border-radius:999px;
  background:var(--peach-2);color:var(--ink);
  text-decoration:none;font-family:"Varela Round",sans-serif;
}

/* 首屏 */
.hero{
  display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,1fr);
  gap:clamp(20px,4vw,48px);align-items:center;
  min-height:70vh;max-width:1140px;margin:0 auto;
  padding:clamp(26px,5vw,52px) clamp(16px,4vw,40px);
}
.hero-figure{
  margin:0;aspect-ratio:4/3;
  display:flex;align-items:center;justify-content:center;
  border:1.5px solid var(--line);border-radius:var(--r);
  background:#ffeef1;overflow:hidden;
}
.hero-img{width:100%;height:100%;object-fit:cover}
.hero-deco{
  width:58%;aspect-ratio:1;border-radius:50%;
  border:2px dashed var(--peach);
  background:radial-gradient(circle at 34% 30%,#ffd8e0,#ffb6c1 72%);
}
.hero-text{text-align:right}
h1{
  font-size:clamp(1.95rem,4.5vw,3rem);
  line-height:1.24;margin:0 0 16px;
}
.hero-desc{color:var(--muted);max-width:44ch;margin:0 auto 24px}
.hero-more{
  display:inline-flex;align-items:center;min-height:46px;
  padding:12px 26px;border-radius:999px;
  border:1.5px solid var(--ink);background:var(--peach-2);color:var(--ink);
  text-decoration:none;
  transition:background .22s ease,transform .22s ease;
}
.hero-more:hover{background:var(--peach);transform:translateY(-2px)}

/* 正文各节 */
main > section[id]{
  max-width:840px;margin:0 auto;
  padding:clamp(34px,5vw,56px) clamp(16px,4vw,40px);
  border-top:1.5px solid var(--line);
  scroll-margin-top:120px;
}
main > section[id] h2{font-size:clamp(1.34rem,3vw,1.78rem);line-height:1.38;margin:0 0 10px}
main > section[id] h3{font-size:1.1rem;margin:26px 0 8px}
main > section[id] ul,main > section[id] ol{padding-left:1.3em;margin:0 0 1em}
main > section[id] li{margin:.3em 0}
main > section[id] figure{
  margin:22px 0;border:1.5px solid var(--line);
  border-radius:var(--r);overflow:hidden;background:#ffeef1;
}
main > section[id] img{border-radius:calc(var(--r) - 2px)}
main > section[id] blockquote{
  margin:22px 0;padding:4px 0 4px 18px;
  border-left:3px solid var(--peach);color:var(--muted);
}

/* 附加区块 */
.panel{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(220px,290px);
  gap:clamp(18px,3vw,40px);
  max-width:1140px;margin:0 auto;
  padding:clamp(34px,5vw,58px) clamp(16px,4vw,40px);
  border-top:1.5px solid var(--line);
}
.panel-main h2{font-size:clamp(1.4rem,3vw,1.86rem);margin:0 0 8px}
.subtitle{color:var(--muted);margin:0}
.side{
  align-self:start;padding:20px;
  border:1.5px solid var(--line);border-radius:var(--r);
  background:var(--card);
}
.side-title{font-size:1rem;color:var(--peach-ink);margin:0 0 10px;letter-spacing:.04em}
.side-list{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.side-list a{
  display:flex;align-items:center;min-height:40px;padding:4px 0;
  color:var(--ink);text-decoration:none;font-size:.96rem;
  border-bottom:1px dashed var(--line);
}
.side-list li:last-child a{border-bottom:0}
.side-list a:hover{color:var(--peach-ink)}

/* 页脚 */
.foot{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:16px;
  padding:36px clamp(16px,4vw,40px) 26px;
  border-top:1.5px solid var(--line);
  background:#ffeef1;
}
.foot p{margin:0}
.foot-brand{font-size:1.05rem;letter-spacing:.03em}
.foot-col a{
  display:flex;align-items:center;min-height:40px;
  color:var(--ink);text-decoration:none;font-size:.94rem;
}
.foot-col a:hover{color:var(--peach-ink)}
.foot-copy{
  grid-column:1/-1;text-align:center;
  color:var(--muted);margin-top:14px;
}
.foot-copy small{font-size:.82rem}
.foot-note{
  grid-column:1/-1;display:block;text-align:center;
  color:var(--muted);font-size:.8rem;
}

/* 动效 */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .28s ease,transform .28s ease}
.js .reveal.in{opacity:1;transform:none}

@media (max-width:760px){
  body{font-size:16px}
  .hero{grid-template-columns:1fr;min-height:0;padding-top:18px;gap:20px}
  .hero-text{text-align:left}
  .hero-desc{margin-left:0}
  .hero-figure{aspect-ratio:3/2}
  .panel{grid-template-columns:1fr}
  main > section[id]{scroll-margin-top:150px}
  .foot{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none}
  .cta:hover,.hero-more:hover{transform:none}
}

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