:root{
  --paper:#f5e6c8;
  --amber:#d4a574;
  --ink:#262117;
  --polaroid:#fcf5e6;
  --line:rgba(38,33,23,.2);
  --soft:rgba(38,33,23,.7);
  --head:'Bebas Neue',Impact,'Source Sans 3',system-ui,-apple-system,'PingFang SC','Microsoft YaHei',sans-serif;
}
*,*::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:400 17px/1.78 'Source Sans 3',system-ui,-apple-system,'PingFang SC','Microsoft YaHei',sans-serif;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit}
p{margin:0 0 1.05em}
h1,h2,h3{font-weight:700;line-height:1.2}
:focus-visible{outline:2px dashed var(--ink);outline-offset:3px}

body::before{
  content:"";position:fixed;inset:0;z-index:60;pointer-events:none;opacity:.2;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.78' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23g)'/%3E%3C/svg%3E");
  background-size:160px 160px;
}
body::after{
  content:"";position:fixed;inset:0;z-index:55;pointer-events:none;mix-blend-mode:screen;
  background:
    radial-gradient(720px 460px at 90% -6%,rgba(212,165,116,.6),transparent 62%),
    radial-gradient(520px 400px at 2% 16%,rgba(255,208,152,.42),transparent 66%),
    radial-gradient(640px 520px at 52% 110%,rgba(212,165,116,.3),transparent 72%);
}

/* 顶栏 */
.masthead{
  position:sticky;top:0;z-index:30;
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  padding:8px clamp(12px,3vw,32px);
  background:rgba(245,230,200,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(4px);
}
.brandmark{
  flex:0 0 auto;display:flex;align-items:center;justify-content:center;
  width:44px;height:44px;border:2px solid var(--ink);border-radius:10px;
  background:var(--amber);overflow:hidden;text-decoration:none;
  box-shadow:3px 3px 0 rgba(38,33,23,.22);
}
.brandmark img{width:100%;height:100%;object-fit:cover}
.mark-glyph{font-family:var(--head);font-size:23px;line-height:1}
.dock{flex:1 1 auto;min-width:0}
.dock nav ul{
  display:flex;gap:2px;margin:0;padding:0;list-style:none;
  overflow-x:auto;scrollbar-width:thin;
}
.dock a{
  display:flex;align-items:center;gap:6px;min-height:44px;padding:0 11px;
  font-size:16px;font-weight:500;text-decoration:none;white-space:nowrap;
  border-bottom:2px solid transparent;
}
.dock .dot{width:6px;height:6px;border-radius:50%;background:var(--amber);flex:0 0 auto}
.dock a:hover{border-bottom-color:var(--ink)}
.call{
  margin-left:auto;flex:0 0 auto;display:inline-flex;align-items:center;min-height:44px;
  padding:0 18px;border-radius:10px;background:var(--ink);color:var(--paper);
  font-size:16px;font-weight:600;letter-spacing:.08em;text-decoration:none;
}
.call:hover{background:#3a3126}

/* 版面 */
.wrap{max-width:1180px;margin:0 auto;padding:0 clamp(14px,4vw,32px)}
.stage{
  display:grid;grid-template-columns:minmax(0,1fr) 258px;
  gap:clamp(20px,3vw,44px);align-items:start;
  padding-block:clamp(16px,3vw,34px);
}

/* 头图 */
.hero{
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);
  gap:clamp(14px,3vw,30px);align-items:center;
  min-height:min(70vh,640px);padding-block:clamp(12px,2vw,26px);
  background-image:radial-gradient(rgba(38,33,23,.15) 1px,transparent 1px);
  background-size:18px 18px;
}
.hero-copy{order:2;text-align:right}
.hero h1{
  margin:0;
  font-family:var(--head);font-size:clamp(38px,6.4vw,80px);line-height:.98;
  letter-spacing:.02em;text-wrap:balance;
  text-shadow:3px 3px 0 rgba(212,165,116,.85);
}
.hero-stack{order:1;position:relative;min-height:clamp(250px,50vh,440px)}
.shot{
  position:absolute;margin:0;padding:8px 8px 30px;
  background:var(--polaroid);border:1px solid rgba(38,33,23,.3);border-radius:6px;
  box-shadow:5px 7px 0 rgba(38,33,23,.16);
  filter:sepia(.18) contrast(1.03) saturate(.88);
}
.shot-1{width:62%;left:0;top:3%;animation:driftA 9s ease-in-out infinite}
.shot-2{width:56%;right:1%;bottom:1%;animation:driftB 11s ease-in-out infinite}
.shot-in{
  display:block;aspect-ratio:4/5;overflow:hidden;border-radius:3px;
  background:linear-gradient(150deg,#e3cca8,#cbb08a 55%,#a98a63);
}
.shot-in img{width:100%;height:100%;object-fit:cover}
@keyframes driftA{0%,100%{transform:rotate(-4.5deg) translateY(0)}50%{transform:rotate(-3.4deg) translateY(-7px)}}
@keyframes driftB{0%,100%{transform:rotate(3deg) translateY(0)}50%{transform:rotate(2deg) translateY(6px)}}

/* 正文 */
.reel{min-width:0}
.reel > section[id]{
  scroll-margin-top:122px;
  padding-block:clamp(26px,5vw,54px);
  border-top:1px dashed rgba(38,33,23,.3);
}
.reel h2{
  margin:0 0 .35em;font-family:var(--head);
  font-size:clamp(25px,3.6vw,38px);letter-spacing:.05em;line-height:1.1;
}
.reel h2::after{
  content:"";display:block;width:52px;height:3px;margin-top:10px;
  background:var(--amber);
}
.reel h3{font-size:20px;margin:1.4em 0 .4em}
.reel p.subtitle,.reel p.subhead,.reel p.lead,.reel p.desc{
  margin:-.1em 0 1.15em;font-size:16px;color:var(--soft);letter-spacing:.03em;
}
.reel ul,.reel ol{padding-left:1.25em;margin:0 0 1.1em}
.reel li{margin:.3em 0}
.reel blockquote{
  margin:1.3em 0;padding:14px 18px;border-left:4px solid var(--amber);
  background:rgba(212,165,116,.2);font-style:normal;
}
.reel img{margin:1.2em 0;border:6px solid var(--polaroid);border-radius:4px;box-shadow:4px 5px 0 rgba(38,33,23,.14)}
.reel a{text-decoration-color:var(--amber);text-underline-offset:3px}
.reel table{width:100%;border-collapse:collapse;margin:0 0 1.2em;font-size:16px}
.reel th,.reel td{border-bottom:1px solid var(--line);padding:8px 6px;text-align:left}
.reel code{font-size:15px;background:rgba(38,33,23,.08);padding:1px 5px;border-radius:4px}

/* 侧栏 */
.rail{
  position:sticky;top:104px;
  border-left:3px solid var(--ink);padding:2px 0 2px 16px;min-width:0;
}
.rail h2{margin:0;font-family:var(--head);font-size:23px;letter-spacing:.08em;line-height:1.2}
.rail .subtitle{margin:0 0 12px;font-size:16px;color:var(--soft);letter-spacing:.1em}
.rail ul{list-style:none;margin:0;padding:0}
.rail a{
  display:flex;align-items:center;min-height:44px;padding:4px 0;
  font-size:16px;text-decoration:none;border-bottom:1px dotted var(--line);
  transition:padding-left .2s ease,color .2s ease;
}
.rail a:hover{padding-left:6px;color:#8a5a26}
.rail a.on{padding-left:6px;font-weight:600;box-shadow:inset 3px 0 0 var(--amber)}

/* 页脚 */
.colophon{
  margin-top:clamp(34px,7vw,72px);background:var(--ink);color:var(--paper);
  padding:clamp(22px,4vw,42px) clamp(14px,4vw,32px) 18px;
}
.foot-cta{max-width:1180px;margin:0 auto}
.foot-cta a{
  display:block;text-align:center;padding:20px 16px;border-radius:10px;
  background:var(--amber);color:var(--ink);text-decoration:none;
  font-family:var(--head);font-size:clamp(22px,4vw,30px);letter-spacing:.1em;
  border-bottom:4px solid rgba(38,33,23,.45);border-radius:10px;
}
.foot-cta a:hover{background:#e0b287}
.foot-cols{
  display:grid;grid-template-columns:1.4fr 1fr;gap:clamp(18px,4vw,40px);
  max-width:1180px;margin:clamp(20px,4vw,34px) auto 0;
}
.foot-brand address{
  font-style:normal;font-family:var(--head);font-size:21px;letter-spacing:.1em;
}
.foot-brand p{margin:8px 0 0;font-size:16px;color:rgba(245,230,200,.74);line-height:1.7}
.foot-links{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
.foot-links a{
  display:flex;align-items:center;min-height:44px;font-size:16px;text-decoration:none;
  border-bottom:1px solid rgba(245,230,200,.18);
}
.foot-links a:hover{color:var(--amber)}
.foot-copy{
  max-width:1180px;margin:22px auto 0;padding-top:12px;font-size:16px;
  color:rgba(245,230,200,.62);border-top:1px solid rgba(245,230,200,.18);
}

/* 进场 */
.js .reel > div[id]{
  opacity:0;transform:translateY(16px);
  transition:opacity .65s ease var(--d,0ms),transform .65s ease var(--d,0ms);
}
.js .reel > div[id].in{opacity:1;transform:none}

@media (max-width:880px){
  .dock{flex-basis:100%;order:3}
  .call{padding:0 14px}
  .stage{grid-template-columns:1fr;gap:18px}
  .hero{grid-template-columns:1fr;min-height:0;gap:16px;padding-bottom:8px}
  .hero-copy{order:1;text-align:left}
  .hero-stack{order:2;min-height:246px}
  .rail{
    position:static;border-left:0;border-top:2px solid var(--ink);
    padding:16px 0 0;margin-top:6px;
  }
  .rail ul{display:grid;grid-template-columns:1fr 1fr;gap:0 14px}
  .rail a{border-bottom:1px dotted var(--line)}
  .reel > div[id]{scroll-margin-top:154px}
  .foot-cols{grid-template-columns:1fr}
}
@media (max-width:420px){
  .hero h1{font-size:clamp(32px,9.6vw,44px)}
  .hero-stack{min-height:214px}
  .dock a{padding:0 9px;font-size:16px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .shot-1,.shot-2{animation:none}
  .js .reel > div[id]{opacity:1;transform:none;transition:none}
}

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