:root{
  --paper:#f5e6c8;
  --paper2:#fbf3e2;
  --accent:#d4a574;
  --ink:#262117;
  --soft:#544a37;
  --line:rgba(38,33,23,.26);
  --r:18px;
  --dock:104px;
}
*,*::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:'Plus Jakarta Sans',-apple-system,BlinkMacSystemFont,'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  font-size:17px;
  line-height:1.72;
  padding-bottom:calc(var(--dock) + env(safe-area-inset-bottom));
}
body::before{
  content:"";
  position:fixed;inset:-60px;z-index:9;pointer-events:none;
  opacity:.3;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.42'/%3E%3C/svg%3E");
  animation:grain 1.1s steps(2) infinite;
}
@keyframes grain{
  0%{transform:translate(0,0)}
  50%{transform:translate(-8px,6px)}
  100%{transform:translate(4px,-6px)}
}
img{max-width:100%;height:auto;display:block}
a{color:#8a5a26}
p{margin:0 0 1em}
h1,h2,h3{line-height:1.28;font-weight:700;letter-spacing:-.01em}
hr{border:0;border-top:1px dashed var(--line);margin:12px 0}
:focus-visible{outline:2px solid #8a5a26;outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* 顶部细条 */
.strip{background:var(--ink);color:var(--paper);overflow:hidden;border-bottom:1px solid rgba(38,33,23,.6)}
.strip-track{display:flex;width:max-content;white-space:nowrap;animation:slide 34s linear infinite}
.strip-track span{display:block;padding:6px 22px;font-size:14px;letter-spacing:.22em}
@keyframes slide{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* 首屏 */
.hero{
  position:relative;isolation:isolate;overflow:hidden;
  min-height:45vh;display:grid;place-items:center;padding:40px 18px;
  background-image:radial-gradient(var(--line) 1px,transparent 1px);
  background-size:20px 20px;
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:radial-gradient(circle at 50% 50%,transparent 0 24%,var(--paper) 78%);
}
.hero::after{
  content:"";position:absolute;z-index:-1;right:-14vw;top:-24vw;
  width:64vw;height:64vw;max-width:520px;max-height:520px;
  background:radial-gradient(circle,rgba(212,165,116,.62),rgba(212,165,116,0) 62%);
  filter:blur(6px);mix-blend-mode:multiply;
  animation:leak 13s ease-in-out infinite alternate;
}
@keyframes leak{
  from{transform:translate3d(0,0,0) scale(1);opacity:.65}
  to{transform:translate3d(-6vw,4vw,0) scale(1.18);opacity:1}
}
.hero-title{
  margin:0;max-width:22ch;text-align:center;text-wrap:balance;
  font-size:clamp(2rem,8.6vw,4.3rem);line-height:1.22;
  text-shadow:1px 1px 0 rgba(255,255,255,.4);
}

/* 正文骨架 */
.wrap{width:min(1120px,100% - 30px);margin-inline:auto;padding:26px 0 10px}
.grid-main{display:grid;gap:24px}
.prose{min-width:0;font-size:17px}
.prose>section{
  border:1px solid var(--line);border-radius:var(--r);
  background:rgba(251,243,226,.68);
  padding:20px 16px;margin:0 0 20px;
  overflow-wrap:break-word;scroll-margin-top:18px;
}
.prose h2{font-size:clamp(1.3rem,4.6vw,1.7rem);margin:0 0 4px}
.prose h2+hr{margin:0 0 14px;border-top-color:rgba(212,165,116,.95)}
.prose h3{font-size:1.1rem;margin:1.2em 0 .4em}
.prose ul,.prose ol{padding-left:1.2em;margin:0 0 1em}
.prose li{margin:.25em 0}
.prose a{color:#8a5a26;text-decoration:underline;text-underline-offset:3px}
.prose strong{color:#1b1710}

/* 侧栏 */
.side{
  min-width:0;border:1px solid var(--line);border-radius:var(--r);
  background:rgba(212,165,116,.18);padding:16px;
}
.side-h{margin:0 0 2px;font-size:15px;letter-spacing:.2em;color:var(--soft)}
.side hr{margin:0 0 8px}
.side-list{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.side-list a{
  display:flex;align-items:center;min-height:42px;padding:0 8px;
  border-radius:10px;border-bottom:1px solid rgba(38,33,23,.12);
  color:var(--ink);text-decoration:none;font-size:15px;
}
.side-list a:hover{background:rgba(245,230,200,.75)}

/* 页脚 */
.foot{
  margin-top:34px;border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(212,165,116,.2),rgba(245,230,200,.55));
  padding:26px 16px 22px;
}
.foot-grid{width:min(1120px,100%);margin-inline:auto;display:grid;gap:20px}
.foot-addr{font-style:normal;display:grid;gap:6px;align-content:start}
.foot-brand{font-size:17px;letter-spacing:.04em}
.foot-desc{font-size:15px;line-height:1.6;color:var(--soft)}
.foot-links{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:0 8px;align-content:start}
.foot-links a{
  display:flex;align-items:center;min-height:40px;padding:0 4px;
  font-size:15px;text-decoration:none;color:var(--ink);
}
.foot-links a:hover{color:#8a5a26;text-decoration:underline}
.foot-form{display:grid;gap:8px;align-content:start}
.foot-form input{
  min-height:44px;padding:0 12px;font:inherit;font-size:16px;
  border:1px solid var(--line);border-radius:12px;
  background:rgba(255,255,255,.62);color:var(--ink);
}
.foot-form button{
  min-height:44px;font:inherit;font-size:16px;letter-spacing:.1em;
  border:1px solid var(--ink);border-radius:12px;
  background:var(--ink);color:var(--paper);cursor:pointer;
}
.copy{width:min(1120px,100%);margin:18px auto 0;font-size:14px;letter-spacing:.08em;color:var(--soft)}

/* 底部固定条 */
.dock{
  position:fixed;left:0;right:0;bottom:0;z-index:30;
  background:var(--ink);color:var(--paper);
  padding:4px 12px calc(8px + env(safe-area-inset-bottom));
  border-top:1px solid rgba(212,165,116,.45);
}
.dock::before{
  content:"";position:absolute;inset:0 0 auto 0;height:5px;opacity:.6;
  background-image:repeating-linear-gradient(90deg,var(--accent) 0 7px,transparent 7px 16px);
}
.dock-inner{width:min(1120px,100%);margin-inline:auto}
.dock-brand{display:flex;justify-content:center;padding-top:8px}
.dock-home{
  display:inline-flex;align-items:center;gap:8px;min-height:40px;
  color:var(--paper);text-decoration:none;font-size:14px;letter-spacing:.12em;
}
.dock-img{height:20px;width:auto;border-radius:3px;filter:sepia(.35)}
.dock-nav{margin-top:2px}
.dock-drawer summary{
  list-style:none;display:flex;align-items:center;justify-content:center;gap:10px;
  min-height:44px;border:1px solid rgba(245,230,200,.42);border-radius:12px;
  cursor:pointer;font-size:15px;letter-spacing:.16em;color:var(--paper);
}
.dock-drawer summary::-webkit-details-marker{display:none}
.dock-drawer summary::after{content:"＋";font-size:15px;line-height:1}
.dock-drawer[open] summary::after{content:"－"}
.dock-menu{
  list-style:none;margin:8px 0 0;padding:0;
  display:grid;grid-template-columns:1fr 1fr;gap:6px;
  max-height:52vh;overflow-y:auto;
}
.dock-menu a{
  display:flex;align-items:center;min-height:44px;padding:0 12px;
  border-radius:10px;border:1px solid rgba(245,230,200,.2);
  background:rgba(245,230,200,.08);
  color:var(--paper);text-decoration:none;font-size:15px;
}
.dock-menu a:active{background:rgba(245,230,200,.22)}

/* 滚动显现 */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

@media (min-width:700px){
  .foot-grid{grid-template-columns:1.3fr 1fr 1fr;align-items:start}
  .dock-menu{grid-template-columns:repeat(4,1fr)}
}
@media (min-width:960px){
  .grid-main{grid-template-columns:minmax(0,1fr) 268px;align-items:start}
  .side{position:sticky;top:18px}
  .prose{font-size:18px;line-height:1.78}
  .prose>section{padding:26px 28px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

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