@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,wght@0,400;0,500;0,700;1,400&family=Nunito:ital,wght@0,700;0,800;0,900;1,700&display=swap');

:root{
  --paper:#fafaf8;
  --graphite:#4a4a4a;
  --ink:#1a1a1a;
  --wash:#f1f0ea;
  --soft:#e7e5dd;
  --tape:rgba(74,74,74,.16);
  --radius:10px;
}

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

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

body{
  margin:0;
  background-color:var(--paper);
  color:var(--ink);
  font-family:'DM Sans',system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.78;
  overflow-x:hidden;
}

body::before{
  content:"";
  position:fixed;
  inset:-10%;
  z-index:0;
  pointer-events:none;
  opacity:.55;
  background-image:
    repeating-linear-gradient(0deg,rgba(26,26,26,.05) 0 1px,rgba(26,26,26,0) 1px 4px),
    repeating-linear-gradient(90deg,rgba(74,74,74,.045) 0 1px,rgba(74,74,74,0) 1px 5px),
    radial-gradient(circle at 18% 12%,rgba(74,74,74,.10),rgba(74,74,74,0) 42%),
    radial-gradient(circle at 82% 78%,rgba(26,26,26,.08),rgba(26,26,26,0) 38%);
}

h1,h2,h3,h4{
  font-family:'Nunito','DM Sans',system-ui,sans-serif;
  line-height:1.24;
  letter-spacing:-.01em;
  margin:0;
}

p{margin:0 0 1em}
img{max-width:100%;height:auto}
a{color:var(--ink)}

/* ---------- 头部 ---------- */
.site-head{
  position:sticky;
  top:0;
  z-index:40;
  background:var(--paper);
  border-bottom:2px dashed var(--graphite);
  padding:8px clamp(14px,4vw,40px) 10px;
  box-shadow:0 4px 0 rgba(26,26,26,.04);
}

.head-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  max-width:1120px;
  margin:0 auto;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  padding:2px 4px;
  text-decoration:none;
  color:var(--ink);
  font-family:'Nunito','DM Sans',sans-serif;
  font-weight:900;
  font-size:1.12rem;
  letter-spacing:.01em;
  transform:rotate(-1deg);
}

.brand-mark{
  width:36px;
  height:36px;
  object-fit:contain;
  border:2px solid var(--ink);
  border-radius:50%;
  background:#fff;
  padding:2px;
}

.cta{
  display:inline-flex;
  align-items:center;
  min-height:42px;
  padding:0 18px;
  border-radius:999px;
  border:2px solid var(--ink);
  background:var(--ink);
  color:var(--paper);
  text-decoration:none;
  font-size:.95rem;
  font-weight:700;
  transform:rotate(1.5deg);
  box-shadow:3px 3px 0 var(--graphite);
}

.cta:active{box-shadow:1px 1px 0 var(--graphite)}

.menu{
  display:flex;
  gap:8px;
  max-width:1120px;
  margin:6px auto 0;
  padding:2px 0 4px;
  overflow-x:auto;
  scrollbar-width:thin;
}

.pill{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 15px;
  border-radius:999px;
  border:2px solid var(--graphite);
  background:#fff;
  color:var(--ink);
  text-decoration:none;
  font-size:.95rem;
  white-space:nowrap;
  transform:rotate(-.7deg);
}

.pill:nth-child(even){transform:rotate(.8deg)}
.pill:hover,.pill:focus-visible{background:var(--ink);border-color:var(--ink);color:var(--paper)}

/* ---------- 顶部区 ---------- */
.hero{
  position:relative;
  display:grid;
  place-items:center;
  min-height:45vh;
  padding:clamp(30px,7vw,62px) clamp(18px,5vw,48px) clamp(44px,8vw,74px);
  text-align:center;
  overflow:hidden;
}

.hero-copy{max-width:16em;position:relative;z-index:2}

.hero h1{
  font-family:'Nunito','DM Sans',sans-serif;
  font-weight:900;
  font-size:clamp(1.9rem,6.4vw,3.5rem);
  line-height:1.14;
  transform:rotate(-1deg);
  text-wrap:balance;
}

.hero-fig{
  position:absolute;
  right:clamp(10px,6vw,70px);
  top:50%;
  translate:0 -50%;
  margin:0;
  transform:rotate(6deg);
  z-index:1;
}

.hero-img{
  width:clamp(96px,15vw,164px);
  border:3px solid var(--ink);
  border-radius:12px;
  background:#fff;
  padding:4px;
  box-shadow:6px 6px 0 var(--tape);
  filter:grayscale(.3) contrast(1.06);
}

.hero::after{
  content:"";
  position:absolute;
  left:-4%;
  right:-4%;
  bottom:-11px;
  height:20px;
  background:var(--graphite);
  opacity:.9;
  transform:skewY(-1.6deg);
}

/* ---------- 正文与侧栏 ---------- */
.sheet{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:minmax(0,1fr) 296px;
  gap:clamp(20px,4vw,44px);
  align-items:start;
  max-width:1120px;
  margin:0 auto;
  padding:clamp(34px,6vw,64px) clamp(16px,4vw,40px) 0;
}

.sheet-main{min-width:0}

.sheet-main section{
  background:#fff;
  border:2px solid var(--graphite);
  border-bottom:6px solid var(--ink);
  border-radius:var(--radius);
  padding:clamp(18px,3vw,30px);
  margin:0 0 clamp(20px,3.4vw,34px);
  scroll-margin-top:132px;
}

.sheet-main section:nth-child(odd){transform:rotate(-.3deg)}
.sheet-main section:nth-child(even){transform:rotate(.3deg)}

.sheet-main h2{
  font-family:'Nunito','DM Sans',sans-serif;
  font-weight:900;
  font-size:clamp(1.32rem,3.1vw,1.85rem);
  margin:0 0 10px;
  padding-bottom:8px;
  border-bottom:2px dashed var(--soft);
}

.sheet-main h3{
  font-family:'Nunito','DM Sans',sans-serif;
  font-weight:800;
  font-size:1.12rem;
  margin:1.4em 0 .5em;
}

.sheet-main p{margin:0 0 1em;color:#262626}
.sheet-main p:last-child{margin-bottom:0}

.sheet-main a{
  color:var(--ink);
  text-decoration:underline;
  text-decoration-thickness:2px;
  text-underline-offset:3px;
  text-decoration-color:var(--graphite);
}

.sheet-main ul,.sheet-main ol{padding-left:1.3em;margin:0 0 1em}
.sheet-main li{margin:0 0 .4em}

.sheet-main figure{margin:1.2em 0}
.sheet-main figcaption{font-size:.95rem;color:var(--graphite)}

.sheet-main blockquote{
  margin:1.2em 0;
  padding:10px 16px;
  border-left:5px solid var(--graphite);
  background:var(--wash);
  border-radius:0 8px 8px 0;
}

.sheet-main table{width:100%;border-collapse:collapse;margin:1em 0;font-size:.98rem}
.sheet-main th,.sheet-main td{border:1px dashed var(--graphite);padding:8px 10px;text-align:left}

.sheet-side{
  position:sticky;
  top:130px;
  background:#fff;
  border:2px dashed var(--graphite);
  border-radius:12px;
  padding:18px 16px 16px;
  transform:rotate(1deg);
  box-shadow:5px 5px 0 var(--tape);
}

.sheet-side::before{
  content:"";
  position:absolute;
  top:-11px;
  left:50%;
  translate:-50% 0;
  width:76px;
  height:19px;
  background:var(--tape);
  border-radius:2px;
  transform:rotate(-4deg);
}

.sheet-side h2{
  font-family:'Nunito','DM Sans',sans-serif;
  font-weight:900;
  font-size:1.06rem;
  letter-spacing:.16em;
  margin:0 0 6px;
}

.subtitle{
  margin:0 0 14px;
  font-size:.95rem;
  line-height:1.66;
  color:var(--graphite);
}

.side-list{list-style:none;margin:0;padding:0;display:grid;gap:4px}

.side-list a{
  display:flex;
  align-items:center;
  min-height:42px;
  padding:4px 10px;
  border-radius:9px;
  border:1.5px solid transparent;
  text-decoration:none;
  font-size:.96rem;
  color:var(--ink);
}

.side-list a:hover,.side-list a:focus-visible{border-color:var(--graphite);background:var(--wash)}

/* ---------- 页脚 ---------- */
.site-foot{
  position:relative;
  z-index:1;
  margin-top:clamp(34px,6vw,64px);
  border-top:3px solid var(--ink);
  background:var(--wash);
  padding:clamp(24px,5vw,44px) clamp(16px,4vw,40px) 18px;
}

.foot-cols{
  display:grid;
  grid-template-columns:1.25fr 1fr 1fr .85fr;
  gap:22px;
  max-width:1120px;
  margin:0 auto;
}

.foot-address{
  font-style:normal;
  font-family:'Nunito','DM Sans',sans-serif;
  font-weight:900;
  font-size:1.08rem;
  display:inline-block;
  padding-bottom:4px;
  border-bottom:3px dashed var(--graphite);
  transform:rotate(-2deg);
}

.foot-nav dl{display:grid;gap:2px;margin:0}

.foot-nav dt,.foot-nav dd{margin:0}

.foot-nav a,.foot-links a,.base-links a{
  display:inline-flex;
  align-items:center;
  min-height:42px;
  color:var(--graphite);
  text-decoration:none;
  font-size:.96rem;
}

.foot-nav a:hover,.foot-links a:hover,.base-links a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px}

.foot-links{list-style:none;margin:0;padding:0;display:grid;gap:2px}

.foot-jump{display:flex;align-items:flex-start}

.jump{
  display:inline-flex;
  align-items:center;
  min-height:42px;
  padding:0 15px;
  border-radius:999px;
  border:2px solid var(--graphite);
  background:#fff;
  text-decoration:none;
  font-size:.95rem;
  transform:rotate(-1.5deg);
}

.jump:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}

.foot-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  max-width:1120px;
  margin:20px auto 0;
  padding-top:12px;
  border-top:1.5px dashed rgba(74,74,74,.5);
  font-size:.94rem;
  color:var(--graphite);
}

.foot-base .copy{margin:0}
.base-links{list-style:none;display:flex;flex-wrap:wrap;gap:16px;margin:0;padding:0}

/* ---------- 动效 ---------- */
.js [data-reveal]{opacity:0;transform:translateY(16px)}
.js [data-reveal].in{
  opacity:1;
  transform:none;
  transition:opacity .5s steps(4,end),transform .5s steps(3,end);
}

/* ---------- 断点 ---------- */
@media (max-width:900px){
  .sheet{grid-template-columns:minmax(0,1fr)}
  .sheet-main section{transform:none}
  .sheet-side{position:static;transform:rotate(.6deg);order:2}
  .sheet-side::before{display:none}
  .foot-cols{grid-template-columns:1fr 1fr}
}

@media (max-width:760px){
  .hero{display:block;min-height:0;padding:34px 18px 40px}
  .hero-copy{max-width:none}
  .hero h1{font-size:clamp(1.72rem,8.6vw,2.6rem)}
  .hero-fig{position:static;translate:none;transform:rotate(2deg);width:max-content;margin:22px auto 0}
  .hero-img{width:132px}
  .site-head{padding-top:6px}
  .menu{padding-bottom:6px}
}

@media (max-width:560px){
  body{font-size:16.5px}
  .foot-cols{grid-template-columns:1fr}
  .foot-base{flex-direction:column;align-items:flex-start}
  .sheet{padding-top:26px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js [data-reveal]{opacity:1;transform:none;transition:none}
  .sheet-main section{transform:none}
}
</｜DSML｜ parameter>
</｜DSML｜ invoke>
</｜DSML｜ calls>

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