@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@300;400;500;600;700&family=Noto+Sans:wght@300;400;500;600;700&display=swap');

:root{
  --paper:#fafaf8;
  --ink:#1a1a1a;
  --grey:#4a4a4a;
  --soft:#f1f0ea;
  --line:rgba(26,26,26,.2);
  --radius:18px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  overflow-x:hidden;
  background:var(--paper);
  color:var(--ink);
  font-family:"Be Vietnam Pro","Noto Sans","Hiragino Sans","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.78;
  letter-spacing:.01em;
}
body::before{
  content:"";
  position:fixed;
  inset:-10px;
  pointer-events:none;
  z-index:1;
  opacity:.5;
  mix-blend-mode:multiply;
  background-image:
    repeating-linear-gradient(0deg,rgba(26,26,26,.05) 0 1px,transparent 1px 4px),
    repeating-linear-gradient(90deg,rgba(74,74,74,.035) 0 1px,transparent 1px 5px),
    radial-gradient(circle at 18% 8%,rgba(74,74,74,.08),transparent 55%);
}
a{color:inherit}
img{max-width:100%}

/* ---------- 顶部：品牌行 / 菜单行 ---------- */
.top{
  position:sticky;
  top:0;
  z-index:30;
  background:rgba(250,250,248,.95);
  border-bottom:2px solid var(--ink);
}
.brandrow{
  display:flex;
  align-items:center;
  gap:16px;
  max-width:1080px;
  margin:0 auto;
  padding:8px 20px 4px;
}
.brand{
  display:inline-block;
  padding:8px 2px;
  font-size:21px;
  font-weight:700;
  letter-spacing:-.02em;
  text-decoration:none;
  border-bottom:3px solid var(--ink);
  transform:rotate(-.8deg);
}
.brandline{
  flex:1;
  height:1px;
  opacity:.4;
  background:repeating-linear-gradient(90deg,var(--ink) 0 9px,transparent 9px 15px);
}
.menurow{
  display:flex;
  align-items:center;
  max-width:1080px;
  margin:0 auto;
  padding:0 20px 6px;
}
.menu{display:flex;flex-wrap:wrap;gap:4px}
.group{position:relative}
.gbtn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:42px;
  padding:10px 14px;
  font:inherit;
  font-size:16px;
  font-weight:600;
  color:var(--grey);
  background:none;
  border:1.5px solid transparent;
  border-radius:14px;
  cursor:pointer;
  transition:transform .12s steps(2),border-color .1s linear,color .1s linear;
}
.gbtn:hover,.gbtn:focus-visible,.group.open .gbtn{
  color:var(--ink);
  border-color:var(--ink);
  transform:rotate(-1.2deg);
}
.caret{
  width:8px;
  height:8px;
  border-right:1.6px solid currentColor;
  border-bottom:1.6px solid currentColor;
  transform:rotate(45deg) translate(-2px,-2px);
}
.glist{
  position:absolute;
  left:0;
  top:100%;
  z-index:40;
  display:none;
  min-width:216px;
  margin:6px 0 0;
  padding:8px;
  list-style:none;
  background:var(--paper);
  border:1.5px solid var(--ink);
  border-bottom:5px solid var(--ink);
  border-radius:var(--radius);
  transform:rotate(-.6deg);
  box-shadow:5px 6px 0 rgba(26,26,26,.12);
}
.group.open .glist{display:block}
.glist a{
  display:flex;
  align-items:center;
  min-height:42px;
  padding:10px 12px;
  font-size:16px;
  text-decoration:none;
  border-radius:10px;
}
.glist a:hover,.glist a:focus-visible{background:var(--soft);text-decoration:underline;text-underline-offset:4px}
.mtoggle{display:none}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  align-items:center;
  gap:30px;
  max-width:1080px;
  min-height:45vh;
  margin:0 auto;
  padding:24px 20px 12px;
}
.hero h1{
  margin:.35em 0 .4em;
  font-size:clamp(28px,4vw,44px);
  line-height:1.24;
  letter-spacing:-.025em;
}
.lede{margin:0;max-width:33em;color:var(--grey);font-size:17px}
.sticker{
  display:inline-block;
  padding:5px 14px;
  font-size:16px;
  font-weight:600;
  background:#fff;
  border:1.5px solid var(--ink);
  border-radius:999px;
  transform:rotate(-2.4deg);
  box-shadow:2px 2px 0 var(--ink);
}
.collage{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:238px;
  margin:0;
  padding:14px 12px;
  overflow:hidden;
  background:#fff;
  border:1.5px solid var(--ink);
  border-bottom:5px solid var(--ink);
  border-radius:var(--radius);
}
.collage::before{
  content:"";
  position:absolute;
  top:-9px;
  left:50%;
  width:98px;
  height:22px;
  transform:translateX(-50%) rotate(-4deg);
  background:rgba(74,74,74,.2);
  border:1px dashed rgba(26,26,26,.4);
}
.shot-wrap{display:block;width:50%}
.w1{transform:rotate(-3.5deg) translateY(-6px)}
.w2{transform:rotate(2.5deg) translateY(8px)}
.shot{
  display:block;
  width:100%;
  height:auto;
  border:1.5px solid var(--ink);
  border-radius:10px;
  filter:grayscale(.35) contrast(1.06);
}
.doodle{width:100%;height:auto}

/* ---------- 正文与侧栏 ---------- */
.wrap{
  display:grid;
  grid-template-columns:minmax(0,1fr) 254px;
  align-items:start;
  gap:38px;
  max-width:1080px;
  margin:0 auto;
  padding:10px 20px 64px;
}
.prose{min-width:0}
.prose div{padding:26px 0 30px;border-bottom:1px dashed var(--line);scroll-margin-top:124px}
.prose div:first-child{padding-top:6px}
.prose div:last-child{border-bottom:0}
.prose h2{margin:0 0 12px;font-size:clamp(23px,2.7vw,31px);line-height:1.3;letter-spacing:-.015em}
.prose h3{margin:24px 0 8px;font-size:20px;line-height:1.4}
.prose hr{
  margin:0 0 18px;
  border:0;
  border-top:1.6px solid var(--ink);
  opacity:.8;
  transform:rotate(-.25deg);
}
.prose p{margin:0 0 1em}
.prose ul,.prose ol{margin:0 0 1.1em;padding-left:1.35em}
.prose li{margin:.35em 0}
.prose a{text-decoration:underline;text-decoration-thickness:1.5px;text-underline-offset:3px;text-decoration-color:var(--grey)}
.prose a:hover{text-decoration-color:var(--ink)}
.prose strong{font-weight:700}
.prose blockquote{
  margin:20px 0;
  padding:14px 18px;
  color:var(--grey);
  background:#fff;
  border:1.5px solid var(--ink);
  border-bottom:4px solid var(--ink);
  border-radius:var(--radius);
  transform:rotate(-.35deg);
}
.prose blockquote p:last-child{margin:0}
.prose img{
  max-width:100%;
  height:auto;
  border:1.5px solid var(--ink);
  border-radius:12px;
  filter:grayscale(.3) contrast(1.05);
}
.prose figure{margin:18px 0}
.prose table{width:100%;margin:0 0 1.1em;border-collapse:collapse;font-size:16px}
.prose th,.prose td{padding:8px 10px;text-align:left;border:1px solid var(--line)}
.prose th{background:var(--soft)}
.prose pre{
  overflow-x:auto;
  padding:14px;
  background:#fff;
  border:1.5px solid var(--ink);
  border-radius:12px;
  font-size:16px;
}
.rail{
  position:sticky;
  top:136px;
  padding:14px 14px 18px;
  font-size:16px;
  background:#fff;
  border:1.5px solid var(--ink);
  border-bottom:5px solid var(--ink);
  border-radius:var(--radius);
  transform:rotate(-.5deg);
}
.rail h2{margin:0 0 8px;font-size:17px;letter-spacing:.14em}
.rail hr{margin:0 0 10px;border:0;border-top:1.5px solid var(--ink);opacity:.85;transform:rotate(-.4deg)}
.railnav ol{margin:0;padding:0;list-style:none}
.railnav a{
  display:flex;
  align-items:center;
  gap:9px;
  min-height:40px;
  padding:6px 4px;
  color:var(--grey);
  font-size:16px;
  text-decoration:none;
}
.railnav a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:4px}
.num{font-size:14px;opacity:.65;letter-spacing:.06em}

/* ---------- 页脚 ---------- */
.foot{
  display:grid;
  grid-template-columns:1.35fr 1fr 1fr;
  column-gap:28px;
  row-gap:8px;
  padding:34px max(20px,5vw) 16px;
  background:var(--soft);
  border-top:2px solid var(--ink);
}
.foot div{min-width:0}
.foot h2{margin:0 0 8px;font-size:17px;letter-spacing:.08em}
.foot hr{margin:0 0 12px;border:0;border-top:1.5px solid var(--ink);opacity:.8;transform:rotate(-.3deg)}
.foot p{margin:0 0 .8em;color:var(--grey);font-size:16px}
.fnav dl{margin:0;display:grid;grid-template-columns:1fr 1fr;gap:0 14px}
.fnav dt{
  grid-column:1/-1;
  margin-top:4px;
  font-size:14px;
  letter-spacing:.12em;
  color:var(--grey);
  border-bottom:1px dashed var(--line);
}
.fnav dd{margin:0}
.fnav dd a{
  display:flex;
  align-items:center;
  min-height:40px;
  padding:8px 0;
  font-size:16px;
  text-decoration:none;
}
.fnav dd a:hover{text-decoration:underline;text-underline-offset:4px}
.sub{display:flex;flex-wrap:wrap;gap:8px}
.inp{
  flex:1 1 130px;
  min-height:44px;
  padding:10px 12px;
  font:inherit;
  font-size:16px;
  background:#fff;
  border:1.5px solid var(--ink);
  border-radius:12px;
}
.inp:focus-visible{outline:2px dashed var(--grey);outline-offset:2px}
.sbtn{
  min-height:44px;
  padding:10px 20px;
  font:inherit;
  font-size:16px;
  font-weight:600;
  color:var(--paper);
  background:var(--ink);
  border:1.5px solid var(--ink);
  border-radius:12px;
  cursor:pointer;
  transition:transform .1s steps(2);
}
.sbtn:hover{transform:rotate(-1.5deg)}
.f-bottom{
  grid-column:1/-1;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:8px 20px;
  margin-top:14px;
  padding-top:12px;
  border-top:1px dashed var(--line);
}
.copy{margin:0;font-size:16px;color:var(--grey)}
.toplinks{display:flex;gap:18px;margin:0}
.toplinks a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  font-size:16px;
  color:var(--grey);
  text-decoration:none;
}
.toplinks a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:4px}

/* ---------- 动效 ---------- */
@media (hover:hover){
  .group:hover .glist{display:block}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important;animation:none!important}
}

/* ---------- 窄屏 ---------- */
@media (max-width:860px){
  .hero{grid-template-columns:1fr;min-height:0;padding-top:18px;gap:18px}
  .collage{min-height:190px;order:2}
  .hero-txt{order:1}
  .wrap{grid-template-columns:1fr;gap:22px;padding-bottom:48px}
  .rail{position:static;transform:none;order:2}
  .foot{grid-template-columns:1fr;padding-bottom:14px}
  .f-bottom{flex-direction:column;align-items:flex-start}
  .mtoggle{
    display:inline-flex;
    align-items:center;
    min-height:44px;
    padding:10px 18px;
    font:inherit;
    font-size:16px;
    font-weight:600;
    color:var(--ink);
    background:#fff;
    border:1.5px solid var(--ink);
    border-bottom-width:4px;
    border-radius:14px;
    cursor:pointer;
  }
  .menu{display:none;width:100%}
  .menu.open{display:block;padding-bottom:8px}
  .group{width:100%;border-bottom:1px dashed var(--line)}
  .group:last-child{border-bottom:0}
  .gbtn{width:100%;justify-content:space-between;border-radius:0;transform:none}
  .gbtn:hover{transform:none}
  .glist{
    position:static;
    min-width:0;
    margin:0 0 8px;
    padding:4px 0 4px 10px;
    background:none;
    border:0;
    border-left:2px solid var(--ink);
    border-radius:0;
    box-shadow:none;
    transform:none;
  }
  .fnav dl{grid-template-columns:1fr}
  .brand{font-size:19px}
}
@media (max-width:420px){
  .hero h1{font-size:27px}
  .sticker{font-size:16px}
}

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