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

:root{
  --ink:#0F1626;
  --ink2:#17202F;
  --ink3:#1E2A3D;
  --gold:#E8B44A;
  --gold-deep:#9C6C14;
  --cream:#F7F4EE;
  --dim:rgba(247,244,238,.66);
  --line:rgba(232,180,74,.22);
  --pad:clamp(16px,4.2vw,44px);
}

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

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

body{
  margin:0;
  background:var(--ink);
  color:var(--cream);
  font-family:'Nunito Sans',system-ui,-apple-system,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;
  font-size:17px;
  line-height:1.75;
  overflow-x:hidden;
}

a:focus-visible,button:focus-visible{outline:2px solid var(--gold);outline-offset:2px}

.veil{
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:radial-gradient(rgba(232,180,74,.24) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.5;
  -webkit-mask-image:radial-gradient(130% 85% at 50% 0%,#000 18%,transparent 76%);
  mask-image:radial-gradient(130% 85% at 50% 0%,#000 18%,transparent 76%);
}

/* 顶部横向导航：品牌居中，菜单分列两侧，主按钮在右 */
.top{
  position:relative;
  z-index:30;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:10px;
  padding:12px var(--pad) 10px;
  border-bottom:1px solid rgba(232,180,74,.14);
}

.top nav p{display:flex;flex-wrap:wrap;gap:2px;margin:0;padding:0}

.top nav a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 11px;
  color:var(--dim);
  text-decoration:none;
  font-family:'Rubik',system-ui,sans-serif;
  font-size:16px;
  font-weight:500;
  border-radius:4px;
  transition:color .2s,background .2s;
}

.top nav a:hover,.top nav a:focus-visible{color:var(--cream);background:rgba(232,180,74,.13)}

.top-end{display:flex;align-items:center;justify-content:flex-end;gap:8px}

.brand{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  justify-self:center;
  font-family:'Rubik',system-ui,sans-serif;
  font-weight:700;
  font-size:21px;
  letter-spacing:.02em;
  color:var(--cream);
  text-decoration:none;
  white-space:nowrap;
}

.brand .mark{height:26px;width:auto;display:block;border-radius:4px}

.cta{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 18px;
  border-radius:4px;
  background:var(--gold);
  color:var(--ink);
  text-decoration:none;
  font-family:'Rubik',system-ui,sans-serif;
  font-weight:600;
  font-size:16px;
  white-space:nowrap;
  box-shadow:0 6px 18px rgba(232,180,74,.24);
  transition:transform .18s,box-shadow .18s;
}

.cta:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(232,180,74,.36)}

/* 二级粘性锚点条 */
.dock{
  position:sticky;
  top:0;
  z-index:35;
  background:rgba(15,22,38,.94);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}

.dock nav p{
  display:flex;
  gap:0;
  margin:0;
  padding:0 var(--pad);
  overflow-x:auto;
  scrollbar-width:none;
}

.dock nav p::-webkit-scrollbar{display:none}

.dock nav a{
  display:inline-flex;
  align-items:center;
  min-height:46px;
  padding:0 13px;
  color:var(--dim);
  text-decoration:none;
  white-space:nowrap;
  font-size:16px;
  font-weight:600;
  border-bottom:2px solid transparent;
  transition:color .18s,border-color .18s;
}

.dock nav a:hover,.dock nav a:focus-visible{color:var(--gold);border-bottom-color:var(--gold)}

/* 分层 Hero */
.hero{
  position:relative;
  z-index:1;
  isolation:isolate;
  display:grid;
  place-items:center;
  min-height:70vh;
  padding:clamp(28px,6vw,60px) var(--pad) clamp(48px,8vw,88px);
  overflow:hidden;
}

.hero::before{
  content:"";
  position:absolute;
  inset:-12% -12% 0;
  z-index:0;
  background:radial-gradient(58% 48% at 50% 26%,rgba(232,180,74,.18),transparent 72%);
}

.hero::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:130px;
  z-index:1;
  background:linear-gradient(to bottom,rgba(15,22,38,0),var(--ink));
}

.hero-art{position:absolute;inset:0;z-index:1;overflow:hidden;pointer-events:none}

.hero-plate{
  position:absolute;
  margin:0;
  overflow:hidden;
  border-radius:4px;
  background:linear-gradient(155deg,var(--ink3),#0a111e);
  box-shadow:0 26px 60px rgba(0,0,0,.55);
  transform:translate3d(0,var(--ty,0px),0) rotate(var(--r,0deg));
  will-change:transform;
}

.hero-plate.p1{--r:-3deg;width:36%;aspect-ratio:3/4;left:-2%;top:7%;z-index:1}
.hero-plate.p2{--r:2.6deg;width:30%;aspect-ratio:4/5;right:-1%;bottom:5%;z-index:2}

.hero-plate img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
  animation:drift 8s ease-in-out infinite alternate;
}

.hero-plate.p2 img{animation-delay:-4s}

@keyframes drift{
  from{transform:translateY(-7px)}
  to{transform:translateY(9px)}
}

.hero-copy{position:relative;z-index:3;max-width:660px;text-align:center}

.hero-copy h1{
  margin:0;
  font-family:'Rubik',system-ui,sans-serif;
  font-weight:700;
  font-size:clamp(30px,5.6vw,54px);
  line-height:1.22;
  letter-spacing:-.02em;
  text-shadow:0 10px 34px rgba(0,0,0,.55);
}

.hero-copy h1::after{
  content:"";
  display:block;
  width:58px;
  height:3px;
  margin:20px auto 0;
  border-radius:2px;
  background:var(--gold);
}

.lede{margin:18px auto 0;max-width:520px;color:var(--dim);font-size:17px}

/* 正文与右侧目录 */
.shell{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:minmax(0,1fr) 236px;
  gap:clamp(18px,3vw,34px);
  align-items:start;
  max-width:1160px;
  margin:0 auto;
  padding:clamp(24px,4vw,46px) var(--pad) clamp(48px,7vw,80px);
}

.story{
  min-width:0;
  background:var(--cream);
  color:var(--ink);
  border-radius:4px;
  padding:clamp(20px,3.4vw,44px);
  box-shadow:0 24px 60px rgba(0,0,0,.45);
  font-size:17px;
}

.story > article{scroll-margin-top:78px}

.story > article + article{
  margin-top:clamp(26px,4vw,50px);
  padding-top:clamp(20px,3vw,38px);
  border-top:1px solid rgba(15,22,38,.14);
}

.story h2,.story h3{
  font-family:'Rubik',system-ui,sans-serif;
  line-height:1.32;
  letter-spacing:-.01em;
  color:var(--ink);
}

.story h2{
  display:flex;
  gap:10px;
  align-items:flex-start;
  margin:0 0 .7em;
  font-size:clamp(21px,3.2vw,29px);
}

.story h2 > span{flex:1}

.story h2 > span::before{
  content:"";
  display:inline-block;
  width:9px;
  height:9px;
  margin-right:10px;
  border-radius:2px;
  background:var(--gold);
  vertical-align:2px;
}

.story h3{margin:1.6em 0 .5em;font-size:clamp(18px,2.4vw,21px)}

.story h3 > span::before{
  content:"";
  display:inline-block;
  width:12px;
  height:2px;
  margin-right:9px;
  background:var(--gold-deep);
  vertical-align:5px;
}

.story p{margin:0 0 1.05em;max-width:70ch}
.story > article > p:first-of-type{color:#252e40}

.story ul,.story ol{margin:0 0 1.1em;padding-left:1.35em}
.story li{margin:.35em 0}

.story a{color:var(--gold-deep);text-underline-offset:3px}
.story a:hover{color:var(--ink)}

.story strong{font-weight:700}

.story img{
  display:block;
  max-width:100%;
  height:auto;
  margin:1.2em 0;
  border-radius:4px;
  box-shadow:0 12px 30px rgba(15,22,38,.18);
}

.story blockquote{
  margin:1.3em 0;
  padding:.4em 0 .4em 1.1em;
  border-left:3px solid var(--gold);
  color:#39435a;
}

.story table{
  display:block;
  width:100%;
  margin:1.2em 0;
  border-collapse:collapse;
  overflow-x:auto;
  font-size:16px;
}

.story th,.story td{border:1px solid rgba(15,22,38,.18);padding:.5em .7em;text-align:left}
.story hr{border:none;border-top:1px solid rgba(15,22,38,.16);margin:2em 0}

.js .story > article{
  opacity:0;
  transform:translateY(26px);
  transition:opacity .7s ease,transform .75s cubic-bezier(.2,.7,.2,1);
}

.js .story > article.in{opacity:1;transform:none}

.rail{
  position:sticky;
  top:64px;
  padding:16px 16px 10px;
  border:1px solid var(--line);
  border-radius:4px;
  background:linear-gradient(160deg,var(--ink2),var(--ink));
  box-shadow:0 16px 40px rgba(0,0,0,.4);
  font-size:16px;
}

.rail h2{
  display:flex;
  align-items:center;
  gap:8px;
  margin:0 0 10px;
  font-family:'Rubik',system-ui,sans-serif;
  font-size:17px;
  font-weight:600;
  color:var(--gold);
}

.rail h2 span{display:inline-flex;align-items:center;gap:8px}

.rail h2 span::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--gold)}

.rail p{display:flex;flex-direction:column;margin:0}

.rail a{
  display:flex;
  align-items:center;
  min-height:40px;
  padding:0 4px;
  color:var(--cream);
  text-decoration:none;
  font-size:16px;
  border-bottom:1px dashed rgba(247,244,238,.14);
  transition:color .18s,padding-left .18s;
}

.rail a:last-child{border-bottom:none}
.rail a:hover{color:var(--gold);padding-left:10px}

/* 三栏页脚，超大品牌字 */
.foot{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:18px 26px;
  padding:clamp(36px,6vw,64px) var(--pad) 26px;
  border-top:1px solid var(--line);
  background:linear-gradient(to bottom,rgba(232,180,74,.06),transparent 62%);
}

.foot-word{
  grid-column:1 / -1;
  margin:0;
  font-family:'Rubik',system-ui,sans-serif;
  font-weight:700;
  font-size:clamp(40px,11vw,96px);
  line-height:.95;
  letter-spacing:-.03em;
  color:var(--gold);
}

.foot-col{
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin:0;
  max-width:34ch;
  font-size:16px;
  color:var(--dim);
}

.foot-top{margin:0}

.foot-top a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 16px;
  border:1px solid var(--line);
  border-radius:4px;
  color:var(--cream);
  text-decoration:none;
  font-size:16px;
  transition:border-color .2s,color .2s;
}

.foot-top a:hover{color:var(--gold);border-color:var(--gold)}

.foot small{
  grid-column:1 / -1;
  margin-top:6px;
  padding-top:14px;
  border-top:1px solid rgba(247,244,238,.1);
  font-size:16px;
  color:rgba(247,244,238,.5);
}

@media (max-width:880px){
  .top{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:2px 8px;
    padding:10px var(--pad);
  }
  .brand{order:1;flex:1 1 100%;justify-content:center}
  .nav-left{order:2;flex:1 1 auto}
  .top-end{order:3;flex:1 1 auto;gap:6px}
  .shell{grid-template-columns:minmax(0,1fr)}
  .rail{position:static;top:auto}
}

@media (max-width:640px){
  .hero{min-height:72vh;padding-top:34px}
  .hero-plate.p1{width:52%;left:-10%;top:3%;opacity:.55}
  .hero-plate.p2{width:46%;right:-10%;bottom:7%;opacity:.5}
  .hero-copy h1{font-size:clamp(26px,7.4vw,34px)}
  .foot{grid-template-columns:minmax(0,1fr)}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .story > article{opacity:1;transform:none;transition:none}
  .hero-plate img{animation:none}
  .cta:hover{transform:none}
  .rail a:hover{padding-left:4px}
}

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