@import url('https://fonts.googleapis.com/css2?family=Kalam:wght@400;700&family=Patrick+Hand&display=swap');

:root{
  --paper:#f5e6c8;
  --paper-2:#fbf2dd;
  --paper-3:#fffaf0;
  --tan:#d4a574;
  --tan-deep:#a9743c;
  --ink:#262117;
  --ink-2:#4b3f2e;
  --line:rgba(38,33,23,.18);
  --radius:4px;
}

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

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

body{
  margin:0;
  padding:0 0 148px;
  background:var(--paper);
  color:var(--ink);
  font-family:Kalam,"Patrick Hand","Kaiti SC",STKaiti,"楷体",Georgia,serif;
  font-size:17px;
  line-height:1.8;
  letter-spacing:.2px;
  overflow-x:hidden;
}

/* 胶片颗粒 */
body::before{
  content:"";
  position:fixed;
  inset:-30% -30% -30% -30%;
  z-index:6;
  pointer-events:none;
  opacity:.28;
  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='.82' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23g)' opacity='.45'/%3E%3C/svg%3E");
  animation:grain 1.2s steps(3) infinite;
}

/* 漏光 */
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  opacity:.6;
  background:
    radial-gradient(58% 42% at 84% 8%, rgba(212,165,116,.62), rgba(212,165,116,0) 68%),
    radial-gradient(46% 40% at 6% 74%, rgba(169,116,60,.34), rgba(169,116,60,0) 70%),
    linear-gradient(180deg, rgba(255,250,240,.5), rgba(245,230,200,0) 34%);
  animation:leak 16s ease-in-out infinite alternate;
}

img{ max-width:100%; height:auto; }

/* ---------- 底部固定条 ---------- */
.dock{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:30;
  display:flex;
  align-items:center;
  gap:10px;
  padding:12px 16px calc(12px + env(safe-area-inset-bottom));
  background:rgba(245,230,200,.95);
  backdrop-filter:blur(6px);
  border-top:2px solid var(--ink);
  box-shadow:0 -10px 26px rgba(38,33,23,.16);
}

.dock .mark{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:0 2px;
  font-size:1.08rem;
  font-weight:700;
  letter-spacing:.6px;
  color:var(--ink);
  text-decoration:none;
  border-bottom:3px solid var(--tan);
}

.drawer{ position:relative; }

.drawer summary{
  list-style:none;
  cursor:pointer;
  display:inline-flex;
  align-items:center;
  gap:6px;
  min-height:44px;
  padding:0 16px;
  font-size:1rem;
  border:2px solid var(--ink);
  border-radius:999px;
  background:var(--paper-3);
  color:var(--ink);
}

.drawer summary::-webkit-details-marker{ display:none; }
.drawer[open] summary{ background:var(--ink); color:var(--paper); border-color:var(--ink); }

.pills{
  list-style:none;
  margin:0;
  padding:12px;
  position:absolute;
  left:0;
  bottom:calc(100% + 12px);
  width:min(80vw,420px);
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  background:var(--paper-2);
  border:2px solid var(--ink);
  border-radius:12px;
  box-shadow:0 16px 30px rgba(38,33,23,.24);
}

.pills a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:6px 14px;
  font-size:.95rem;
  text-decoration:none;
  color:var(--ink);
  background:var(--paper-3);
  border:1px solid var(--tan);
  border-radius:999px;
}

.pills a:hover{ background:var(--tan); }

.find{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
  flex:0 1 300px;
}

.find input{
  flex:1 1 auto;
  min-width:0;
  min-height:44px;
  padding:8px 14px;
  font:inherit;
  font-size:.95rem;
  color:var(--ink);
  background:var(--paper-3);
  border:2px solid var(--line);
  border-radius:999px;
}

.find input:focus{ outline:2px solid var(--tan-deep); outline-offset:1px; }

.find button{
  min-height:44px;
  padding:0 18px;
  font:inherit;
  font-size:1rem;
  color:var(--ink);
  background:var(--tan);
  border:2px solid var(--ink);
  border-radius:999px;
  cursor:pointer;
}

.find button:hover{ background:var(--tan-deep); color:var(--paper-3); }

/* ---------- 首屏 ---------- */
.hero{
  min-height:70vh;
  max-width:1180px;
  margin:0 auto;
  padding:76px 24px 44px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  align-items:flex-end;
  text-align:right;
}

.hero h1{
  margin:0;
  font-size:clamp(2.3rem,8vw,5.2rem);
  line-height:1.06;
  letter-spacing:-.6px;
  font-weight:700;
  text-shadow:1px 2px 0 rgba(212,165,116,.55);
  animation:track 7s ease-in-out infinite;
}

.hero .sub{
  max-width:38ch;
  margin:22px 0 0;
  padding-top:14px;
  font-size:1.02rem;
  line-height:1.75;
  color:var(--ink-2);
  border-top:3px solid var(--tan);
}

/* ---------- 主区 ---------- */
.stage{
  max-width:1180px;
  margin:0 auto;
  padding:0 24px 64px;
  display:grid;
  grid-template-columns:minmax(0,1fr) 262px;
  gap:44px;
  align-items:start;
}

.column{ min-width:0; }

.column > article{
  padding-top:34px;
  margin-top:34px;
  border-top:1px dashed var(--line);
  scroll-margin-top:24px;
  animation:rise .68s both;
}

.column > article:nth-child(1){ animation-delay:.04s; }
.column > article:nth-child(2){ animation-delay:.1s; }
.column > article:nth-child(3){ animation-delay:.16s; }
.column > article:nth-child(4){ animation-delay:.22s; }
.column > article:nth-child(5){ animation-delay:.28s; }
.column > article:nth-child(6){ animation-delay:.34s; }
.column > article:nth-child(7){ animation-delay:.4s; }

.column h2{
  margin:0 0 14px;
  font-size:clamp(1.4rem,3.2vw,1.92rem);
  line-height:1.32;
  letter-spacing:.2px;
}

.column h3{
  margin:26px 0 10px;
  font-size:1.2rem;
  line-height:1.4;
}

.column h2 > span,
.column h3 > span,
.rail h2 > span,
.cta h2 > span{
  background:linear-gradient(transparent 66%, rgba(212,165,116,.8) 66%);
}

.column p{ margin:0 0 16px; }

.column ul,
.column ol{ margin:0 0 18px; padding-left:1.3em; }

.column li{ margin:0 0 8px; }

.column a{
  color:#8a5a24;
  text-decoration:underline wavy rgba(169,116,60,.55);
  text-underline-offset:3px;
}

.column a:hover{ color:var(--ink); }

.column strong{ color:#7a4a17; }

.column blockquote{
  margin:22px 0;
  padding:6px 0 6px 18px;
  border-left:5px solid var(--tan);
  color:var(--ink-2);
  font-style:italic;
}

.column hr{
  border:0;
  height:2px;
  margin:26px 0;
  background:repeating-linear-gradient(90deg, var(--tan) 0 8px, transparent 8px 16px);
}

.column figure{
  margin:26px 0;
  padding:12px 12px 16px;
  background:var(--paper-3);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:0 6px 0 -2px var(--tan);
  transform:rotate(-.6deg);
}

.column figure:nth-of-type(even){ transform:rotate(.5deg); }

.column figure img{
  display:block;
  width:100%;
  border-radius:2px;
  filter:sepia(.2) contrast(1.05) saturate(.82);
}

.column figcaption{
  margin-top:8px;
  font-size:.86rem;
  line-height:1.6;
  color:var(--ink-2);
}

.column table{
  display:block;
  width:100%;
  overflow-x:auto;
  border-collapse:collapse;
  margin:0 0 18px;
}

.column td,
.column th{
  padding:8px 10px;
  border-bottom:1px solid var(--line);
  text-align:left;
  vertical-align:top;
}

/* ---------- 侧栏 ---------- */
.rail{
  position:sticky;
  top:24px;
  padding:18px 16px;
  background:linear-gradient(180deg,var(--paper-3),#f8eed8);
  border:1px solid var(--line);
  border-top:4px solid var(--tan);
  border-radius:var(--radius);
  box-shadow:0 12px 0 -8px rgba(38,33,23,.14);
}

.rail h2{
  margin:0 0 10px;
  font-size:1.06rem;
  letter-spacing:.4px;
}

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

.toc a{
  display:flex;
  align-items:center;
  gap:8px;
  min-height:40px;
  padding:4px 6px;
  font-size:.97rem;
  color:var(--ink);
  text-decoration:none;
  border-radius:var(--radius);
}

.toc a:hover{ background:rgba(212,165,116,.3); }

.dot{
  flex:none;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--tan);
}

/* ---------- 页脚 ---------- */
footer{
  margin-top:40px;
  border-top:6px double var(--ink);
  background:linear-gradient(180deg,#f7ecd6,#eeddbd);
}

.cta{
  max-width:1180px;
  margin:0 auto;
  padding:44px 24px 28px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  border-bottom:1px dashed var(--line);
}

.cta h2{
  margin:0;
  font-size:clamp(1.6rem,5vw,2.5rem);
  line-height:1.2;
}

.cta-pills{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  max-width:520px;
}

.cta-pills a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:4px 12px;
  font-size:.92rem;
  color:var(--ink-2);
  text-decoration:none;
  border:1px dashed var(--tan-deep);
  border-radius:999px;
}

.cta-pills a:hover{ background:var(--tan); color:var(--ink); }

.bar{
  max-width:1180px;
  margin:0 auto;
  padding:16px 24px 22px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}

.bar .mini{
  font-weight:700;
  color:var(--ink);
  text-decoration:none;
}

.foot-nav menu{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  gap:2px 14px;
}

.foot-nav a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  font-size:.9rem;
  color:var(--ink-2);
  text-decoration:none;
  border-bottom:1px solid transparent;
}

.foot-nav a:hover{ border-bottom-color:var(--ink); }

.bar small{ font-size:.85rem; color:var(--ink-2); }

/* ---------- 动效 ---------- */
@keyframes grain{
  0%{ transform:translate(0,0); }
  33%{ transform:translate(-2%,1.5%); }
  66%{ transform:translate(1.5%,-1%); }
  100%{ transform:translate(0,0); }
}

@keyframes leak{
  0%{ opacity:.45; }
  100%{ opacity:.75; }
}

@keyframes rise{
  from{ opacity:0; transform:translateY(14px); }
  to{ opacity:1; transform:none; }
}

@keyframes track{
  0%,92%,100%{ transform:none; }
  94%{ transform:translateX(-2px) skewX(-.4deg); }
  96%{ transform:translateX(2px) skewX(.3deg); }
}

/* ---------- 窄屏 ---------- */
@media (max-width:820px){
  .stage{ grid-template-columns:1fr; gap:30px; }
  .rail{ position:static; }
}

@media (max-width:620px){
  body{ padding-bottom:186px; font-size:16.5px; }
  .dock{ flex-wrap:wrap; row-gap:8px; }
  .find{ order:3; flex:1 0 100%; margin-left:0; }
  .hero{ min-height:62vh; padding:64px 20px 36px; }
  .hero .sub{ max-width:none; }
  .stage{ padding:0 20px 50px; }
  .cta{ padding:34px 20px 24px; }
  .bar{ padding:14px 20px 20px; }
  .pills{ width:min(86vw,340px); }
}

@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  *,
  *::before,
  *::after{
    animation:none !important;
    transition:none !important;
  }
}

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