/* ===== 01. reset ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body,h1,h2,h3,h4,p,ul,ol,figure,blockquote,address{margin:0;}
ul,ol{padding:0;list-style:none;}
img,svg,video{display:block;max-width:100%;}
button,input,select,textarea{font:inherit;color:inherit;}
address{font-style:normal;}
a{color:inherit;}

/* ===== 02. tokens ===== */
:root{
  --terra:#A63A28;
  --terra-deep:#7A2618;
  --sea:#10394F;
  --indigo:#1F6E8C;
  --cream:#F3EADC;
  --paper:#FBF6EE;
  --ink:#16100E;
  --brass:#C08A2E;
  --celadon:#3E6B5C;
  --sand:#6B5F57;
  --glass:rgba(251,246,238,.14);
  --hair:rgba(22,16,14,.16);
  --hair-light:rgba(251,246,238,.28);
  --rail-w:88px;
  --rail-w-compact:56px;
  --maxw:1240px;
  --font-heavy:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"PingFang SC","Noto Sans SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --mono:"JetBrains Mono","SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.2,.7,.2,1);
}

/* ===== 03. base ===== */
body{
  padding-left:var(--rail-w);
  min-height:100vh;
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  color:var(--ink);
  background-color:var(--cream);
  background-image:
    linear-gradient(90deg,rgba(166,58,40,.05) 1px,transparent 1px),
    linear-gradient(0deg,rgba(166,58,40,.035) 1px,transparent 1px);
  background-size:96px 100%,100% 26px;
  -webkit-font-smoothing:antialiased;
  transition:padding-left .28s var(--ease);
}
:focus-visible{outline:2px solid var(--brass);outline-offset:3px;}
#main-content{scroll-margin-top:24px;}
::selection{background:var(--terra);color:var(--paper);}

/* ===== 04. skip link ===== */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:300;
  transform:translateY(-180%);
  padding:12px 18px;
  background:var(--ink);color:var(--cream);
  border:1px solid var(--brass);
  font-size:14px;letter-spacing:.08em;text-decoration:none;
  transition:transform .2s var(--ease);
}
.skip-link:focus{transform:translateY(0);}

/* ===== 05. header shell ===== */
.site-header{position:fixed;inset:0;z-index:120;pointer-events:none;}
.brand-rail,.nav-dock{pointer-events:auto;}

/* --- 05a. brand rail --- */
.brand-rail{
  position:absolute;top:0;bottom:0;left:0;
  width:var(--rail-w);
  display:flex;flex-direction:column;align-items:center;justify-content:space-between;
  padding:18px 0 20px;
  background:var(--terra);color:var(--paper);
  border-right:1px solid rgba(22,16,14,.22);
  transition:width .28s var(--ease),background .2s;
}
.site-header[data-compact="true"] .brand-rail{width:var(--rail-w-compact);}
.rail-head{display:flex;align-items:center;justify-content:center;}
.rail-brand{
  display:flex;flex-direction:column;align-items:center;gap:14px;
  text-decoration:none;color:var(--paper);
}
.rail-brand__glyph{
  display:grid;place-items:center;
  width:34px;height:34px;
  border:1px solid var(--brass);color:var(--brass);
  font-family:var(--font-heavy);font-weight:900;font-size:20px;line-height:1;
  transition:background .2s,color .2s;
}
.rail-brand:hover .rail-brand__glyph{background:var(--brass);color:var(--terra-deep);}
.rail-brand__word{
  writing-mode:vertical-rl;text-orientation:upright;
  font-family:var(--font-heavy);font-weight:900;
  font-size:18px;line-height:1.2;letter-spacing:.18em;
}
.rail-quick{display:flex;flex-direction:column;align-items:center;gap:10px;}
.rail-quick__item{
  display:flex;flex-direction:column;align-items:center;gap:6px;
  width:56px;padding:9px 4px;
  border:1px solid var(--brass);
  background:var(--glass);
  color:var(--paper);text-decoration:none;
  transition:background .2s,transform .2s var(--ease),border-color .2s;
}
.rail-quick__item:hover{background:var(--terra-deep);border-color:var(--paper);transform:translateY(-2px);}
.rail-quick__code{font-family:var(--mono);font-size:10px;letter-spacing:.06em;color:var(--brass);}
.rail-quick__item:hover .rail-quick__code{color:var(--cream);}
.rail-quick__label{writing-mode:vertical-rl;text-orientation:upright;font-size:12px;line-height:1.3;letter-spacing:.16em;}
.rail-foot{display:flex;flex-direction:column;align-items:center;}
.rail-top{
  display:flex;flex-direction:column;align-items:center;gap:4px;
  width:44px;padding:9px 0;
  background:transparent;color:var(--paper);
  border:1px solid rgba(251,246,238,.42);
  cursor:pointer;
  opacity:0;visibility:hidden;
  transition:opacity .25s,visibility .25s,background .2s,border-color .2s;
}
.rail-top[data-visible="true"]{opacity:1;visibility:visible;}
.rail-top:hover{background:var(--terra-deep);border-color:var(--brass);}
.rail-top__arrow{font-size:14px;line-height:1;color:var(--brass);}
.rail-top__text{writing-mode:vertical-rl;text-orientation:upright;font-size:10px;letter-spacing:.16em;}
.rail-progress{
  position:absolute;top:0;right:0;
  width:3px;height:100%;
  background:rgba(22,16,14,.22);
  overflow:hidden;
}
.rail-progress__bar{
  display:block;width:100%;height:100%;
  background:var(--brass);
  transform:scaleY(var(--p,0));
  transform-origin:top center;
  transition:transform .12s linear;
}

/* --- 05b. nav dock --- */
.nav-dock{
  position:absolute;top:0;right:0;
  display:flex;align-items:flex-start;gap:10px;
  padding:18px clamp(16px,3vw,36px);
}
.nav-list{
  padding:6px;
  background:rgba(251,246,238,.86);
  border:1px solid var(--hair);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}
.nav-list__ul{display:flex;gap:2px;}
.nav-list a{
  display:flex;align-items:baseline;gap:6px;
  padding:8px 12px;
  color:var(--ink);
  font-size:14px;letter-spacing:.02em;text-decoration:none;
  border-bottom:2px solid transparent;
  transition:color .2s,background .2s,border-color .2s;
}
.nav-list a:hover{background:var(--cream);color:var(--terra-deep);border-bottom-color:var(--brass);}
.nav-list__no{font-family:var(--mono);font-size:10px;letter-spacing:.06em;color:var(--sand);}
.nav-list a[aria-current="page"]{background:var(--terra);color:var(--paper);border-bottom-color:var(--brass);}
.nav-list a[aria-current="page"] .nav-list__no{color:var(--brass);}
.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:9px 13px;
  background:transparent;color:var(--paper);
  border:1px solid rgba(251,246,238,.5);
  font-size:13px;letter-spacing:.14em;cursor:pointer;
}
.nav-toggle__bars{display:flex;flex-direction:column;gap:4px;width:16px;}
.nav-toggle__bars i{display:block;height:2px;background:var(--brass);transition:transform .2s var(--ease);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:first-child{transform:translateY(3px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:last-child{transform:translateY(-3px) rotate(-45deg);}

/* ===== 06. footer ===== */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,96px);
  padding:clamp(40px,6vw,72px) clamp(20px,4vw,56px) 26px;
  background:var(--sea);color:var(--paper);
  border-top:8px solid var(--terra);
  overflow:hidden;
}
.site-footer::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(90deg,rgba(251,246,238,.06) 1px,transparent 1px);
  background-size:88px 100%;
}
.footer-grid{
  position:relative;z-index:1;
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.1fr;
  gap:clamp(22px,3vw,48px);
  max-width:var(--maxw);margin:0 auto;
}
.footer-col{min-width:0;}
.footer-brand{
  font-family:var(--font-heavy);font-weight:900;
  font-size:26px;line-height:1.2;letter-spacing:.08em;
  color:var(--paper);margin-bottom:12px;
}
.footer-note{
  font-size:13px;line-height:1.75;letter-spacing:.02em;
  color:rgba(251,246,238,.72);
  max-width:26em;margin-bottom:10px;
}
.footer-note--mono{
  font-family:var(--mono);font-size:11px;letter-spacing:.14em;
  color:var(--brass);
}
.footer-title{
  font-size:12px;font-weight:500;letter-spacing:.2em;
  color:var(--brass);margin-bottom:14px;
}
.footer-list{display:flex;flex-direction:column;gap:9px;font-size:14px;line-height:1.6;}
.footer-list a{
  color:rgba(251,246,238,.86);text-decoration:none;
  padding-bottom:2px;border-bottom:1px solid transparent;
  transition:color .2s,border-color .2s;
}
.footer-list a:hover,.footer-list a:focus-visible{color:var(--paper);border-bottom-color:var(--brass);}
.footer-list__plain{font-size:13px;color:rgba(251,246,238,.8);word-break:break-word;}
.footer-list__plain--mono{font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--brass);}
.footer-bottom{
  position:relative;z-index:1;
  max-width:var(--maxw);margin:clamp(28px,4vw,46px) auto 0;
  padding-top:16px;
  border-top:1px solid var(--hair-light);
  display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;
  font-size:12px;letter-spacing:.06em;color:rgba(251,246,238,.66);
}
.footer-meta{display:flex;flex-wrap:wrap;gap:6px 18px;}
.footer-legal{display:flex;gap:18px;}
.footer-legal a{
  color:inherit;text-decoration:none;
  border-bottom:1px solid rgba(251,246,238,.32);
  padding-bottom:1px;
  transition:color .2s,border-color .2s;
}
.footer-legal a:hover,.footer-legal a:focus-visible{color:var(--brass);border-bottom-color:var(--brass);}

/* ===== 07. layout helpers ===== */
.main-frame{padding-top:clamp(88px,10vw,128px);padding-bottom:clamp(40px,6vw,80px);}
.shell{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:clamp(18px,4vw,56px);}
.grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2vw,28px);}
.col-3{grid-column:span 3;}
.col-4{grid-column:span 4;}
.col-5{grid-column:span 5;}
.col-6{grid-column:span 6;}
.col-7{grid-column:span 7;}
.col-8{grid-column:span 8;}
.col-12{grid-column:span 12;}

/* ===== 08. typography ===== */
.display{
  font-family:var(--font-heavy);font-weight:900;
  font-size:clamp(2.5rem,6.2vw,5.5rem);line-height:1.02;letter-spacing:-.01em;
}
.title{
  font-family:var(--font-heavy);font-weight:900;
  font-size:clamp(1.55rem,3vw,2.5rem);line-height:1.18;letter-spacing:-.005em;
}
.lead{font-size:clamp(1.02rem,1.5vw,1.2rem);line-height:1.72;max-width:34em;}
.eyebrow{
  display:block;
  font-family:var(--mono);font-size:12px;letter-spacing:.2em;
  color:var(--brass);margin-bottom:10px;
}
.note{font-size:12px;line-height:1.75;letter-spacing:.08em;color:var(--sand);}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.04em;}
.coord{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--mono);font-size:12px;letter-spacing:.08em;
  color:var(--sand);
  border-bottom:1px dashed rgba(107,95,87,.55);
  padding-bottom:1px;
  transition:transform .2s var(--ease),color .2s;
}
.coord:hover{transform:translateY(-2px);color:var(--terra);}

/* ===== 09. sections & bands ===== */
.section{position:relative;padding:clamp(44px,6.5vw,88px) 0;}
.section--cream{background:var(--cream);}
.section--paper{background:var(--paper);}
.section--sea{background:var(--sea);color:var(--paper);}
.section--ink{background:var(--ink);color:var(--cream);}
.section--sea .note,.section--ink .note{color:rgba(251,246,238,.68);}
.section--sea .coord,.section--ink .coord{color:var(--brass);border-bottom-color:rgba(192,138,46,.6);}
.band{display:block;width:100%;height:14px;background:var(--terra);}
.band--sea{background:var(--sea);}
.band--brass{background:var(--brass);}
.band--celadon{background:var(--celadon);}
.rule{height:1px;border:0;background:var(--hair);margin:0;}
.rule--light{background:var(--hair-light);}

/* ===== 10. buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 22px;
  font-size:15px;line-height:1.3;letter-spacing:.04em;text-decoration:none;
  background:var(--paper);color:var(--ink);
  border:1px solid var(--ink);
  cursor:pointer;
  transition:background .2s,color .2s,border-color .2s,transform .2s var(--ease);
}
.btn:hover{transform:translateY(-2px);}
.btn--primary{background:var(--terra);border-color:var(--terra);color:var(--paper);}
.btn--primary:hover{background:var(--terra-deep);border-color:var(--terra-deep);}
.btn--ghost{background:transparent;border-color:var(--brass);color:var(--ink);}
.btn--ghost:hover{background:rgba(192,138,46,.14);}
.btn--quiet{background:transparent;border-color:var(--hair);color:var(--sand);}
.btn--quiet:hover{border-color:var(--sand);color:var(--ink);}
.btn--onDark{background:transparent;border-color:rgba(251,246,238,.55);color:var(--paper);}
.btn--onDark:hover{background:rgba(251,246,238,.12);border-color:var(--brass);}
.btn--mono{font-family:var(--mono);letter-spacing:.1em;font-size:13px;}

/* ===== 11. tags & legend ===== */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;
  font-size:12px;line-height:1.6;letter-spacing:.08em;
  background:var(--paper);color:var(--sand);
  border:1px solid var(--hair);
}
.tag--brass{border-color:var(--brass);color:var(--terra-deep);background:rgba(192,138,46,.14);}
.tag--sea{border-color:var(--sea);color:var(--sea);background:rgba(16,57,79,.07);}
.tag--celadon{border-color:var(--celadon);color:var(--celadon);background:rgba(62,107,92,.1);}
.legend{display:flex;flex-wrap:wrap;gap:10px 20px;font-size:12px;letter-spacing:.06em;color:var(--sand);}
.legend__item{display:inline-flex;align-items:center;gap:7px;}
.legend__dot{display:block;width:10px;height:10px;background:var(--terra);flex:0 0 auto;}
.legend__dot--sea{background:var(--sea);}
.legend__dot--brass{background:var(--brass);}
.legend__dot--celadon{background:var(--celadon);}

/* ===== 12. media ===== */
.media{
  position:relative;overflow:hidden;
  background:var(--paper);
  border:1px solid var(--hair);
  aspect-ratio:16/10;
}
.media img{width:100%;height:100%;object-fit:cover;}
.media--wide{aspect-ratio:21/9;}
.media--square{aspect-ratio:1/1;}
.media--tall{aspect-ratio:3/4;}
.media--placeholder::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(135deg,rgba(166,58,40,.16) 0 25%,transparent 25% 50%,rgba(16,57,79,.12) 50% 75%,transparent 75% 100%);
  background-size:30px 30px;
}
.media__cap{
  position:absolute;left:0;bottom:0;z-index:1;
  padding:5px 10px;
  background:var(--sea);color:var(--paper);
  font-family:var(--mono);font-size:11px;letter-spacing:.1em;
}

/* ===== 13. breadcrumb ===== */
.breadcrumb{font-size:12px;letter-spacing:.08em;color:var(--sand);}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:7px;}
.breadcrumb li{display:flex;align-items:center;gap:7px;}
.breadcrumb li + li::before{content:"/";color:var(--brass);}
.breadcrumb a{color:var(--sand);text-decoration:none;border-bottom:1px solid transparent;transition:color .2s,border-color .2s;}
.breadcrumb a:hover,.breadcrumb a:focus-visible{color:var(--terra);border-bottom-color:var(--brass);}
.breadcrumb [aria-current="page"]{color:var(--ink);}

/* ===== 14. reveal ===== */
html[data-reveal="armed"] [data-reveal]{opacity:0;transform:translateY(14px);}
html[data-reveal="armed"] [data-reveal].is-in{
  opacity:1;transform:none;
  transition:opacity .55s var(--ease),transform .55s var(--ease);
}

/* ===== 15. responsive ===== */
@media (max-width:1100px){
  :root{--rail-w:72px;}
  .rail-quick__item{width:50px;padding:8px 3px;}
  .nav-list a{padding:7px 9px;font-size:13px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}

@media (max-width:900px){
  body{padding-left:0;padding-bottom:76px;}
  .brand-rail{
    position:fixed;top:auto;bottom:0;left:0;right:0;
    width:auto;height:64px;
    flex-direction:row;align-items:center;justify-content:space-between;
    padding:0 14px;
    border-right:0;border-top:1px solid rgba(22,16,14,.24);
  }
  .site-header[data-compact="true"] .brand-rail{width:auto;}
  .rail-head{flex:0 0 auto;}
  .rail-brand{flex-direction:row;gap:9px;}
  .rail-brand__glyph{width:28px;height:28px;font-size:16px;}
  .rail-brand__word{writing-mode:horizontal-tb;font-size:15px;letter-spacing:.12em;}
  .rail-quick{flex-direction:row;gap:8px;}
  .rail-quick__item{width:auto;flex-direction:row;gap:7px;padding:8px 11px;}
  .rail-quick__label{writing-mode:horizontal-tb;font-size:12px;letter-spacing:.08em;}
  .rail-foot{flex:0 0 auto;}
  .rail-top{
    width:auto;flex-direction:row;gap:6px;padding:8px 11px;
    opacity:1;visibility:visible;
    border-color:rgba(251,246,238,.45);
  }
  .rail-top__text{writing-mode:horizontal-tb;font-size:11px;}
  .rail-progress{top:0;bottom:auto;left:0;right:0;width:100%;height:3px;}
  .rail-progress__bar{transform:scaleX(var(--p,0));transform-origin:left center;}

  .nav-dock{
    position:fixed;top:0;left:0;right:0;
    min-height:56px;
    align-items:center;justify-content:space-between;
    padding:10px 14px;
    background:var(--sea);color:var(--paper);
    border-bottom:1px solid rgba(251,246,238,.2);
  }
  .nav-dock::before{
    content:"亚洲城服务";
    font-family:var(--font-heavy);font-weight:900;
    font-size:15px;letter-spacing:.16em;color:var(--paper);
  }
  .nav-toggle{display:inline-flex;}
  .nav-list{
    position:fixed;top:56px;left:0;right:0;
    max-height:calc(100vh - 140px);overflow:auto;
    padding:8px;
    background:var(--paper);
    border:0;border-bottom:1px solid var(--hair);
    -webkit-backdrop-filter:none;backdrop-filter:none;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .22s var(--ease),transform .26s var(--ease),visibility .22s;
  }
  .nav-list[data-open="true"]{opacity:1;visibility:visible;transform:translateY(0);}
  .nav-list__ul{flex-direction:column;gap:0;}
  .nav-list a{padding:14px 12px;font-size:16px;border-bottom:1px solid var(--hair);}
  .nav-list li:last-child a{border-bottom:0;}
  .main-frame{padding-top:78px;}
  .grid{grid-template-columns:repeat(6,minmax(0,1fr));}
  .col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-12{grid-column:span 6;}
}

@media (max-width:640px){
  body{font-size:16px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .footer-brand{font-size:22px;}
  .rail-quick__code{display:none;}
  .rail-brand__word{font-size:13px;letter-spacing:.08em;}
  .nav-dock::before{font-size:13px;letter-spacing:.1em;}
}

/* ===== 16. reduced motion ===== */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html[data-reveal="armed"] [data-reveal]{opacity:1;transform:none;}
  .btn:hover,.coord:hover,.rail-quick__item:hover{transform:none;}
}