*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-padding-top:120px;}
body,h1,h2,h3,h4,h5,p,ul,ol,dl,dd,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img,svg,video{display:block;max-width:100%;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
a{color:inherit;text-decoration:none;}
table{border-collapse:collapse;}

:root{
  --paper:#F6F1E7;
  --ink:#1B1A18;
  --ochre:#A6402D;
  --indigo:#1F2A5A;
  --flag-blue:#2E6FA3;
  --flag-red:#C8463A;
  --flag-green:#2F7D5B;
  --flag-yellow:#D9A441;
  --paper-white:#FDFBF6;
  --stone:#6E6A61;
  --ochre-pale:#E8D8C3;

  --font-title:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --font-mono:"IBM Plex Mono","SFMono-Regular",Menlo,Consolas,"Courier New",monospace;

  --shell:1240px;
  --radius:2px;
  --hair:2px solid var(--ink);
  --shadow-hard:6px 6px 0 var(--ink);
  --shadow-soft:4px 4px 0 var(--ink);
  --ease:cubic-bezier(.22,.61,.36,1);
}

body{
  min-height:100vh;
  background-color:var(--paper);
  background-image:repeating-linear-gradient(90deg,rgba(27,26,24,.045) 0 1px,transparent 1px 88px);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

::selection{background:var(--ochre);color:var(--paper-white);}

h1,h2,h3,h4,h5{
  font-family:var(--font-title);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.16;
}
h1{font-size:clamp(2rem,4.6vw,3.6rem);}
h2{font-size:clamp(1.55rem,3.2vw,2.6rem);}
h3{font-size:clamp(1.15rem,1.9vw,1.45rem);}
h4{font-size:1.05rem;letter-spacing:0;}

p{max-width:44em;}
strong{font-weight:700;}

:focus-visible{
  outline:2px solid var(--flag-yellow);
  outline-offset:3px;
  border-radius:1px;
}

.skip-link{
  position:absolute;
  left:14px;
  top:-72px;
  z-index:300;
  padding:10px 18px;
  background:var(--ink);
  color:var(--paper-white);
  border:2px solid var(--flag-yellow);
  border-radius:var(--radius);
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.08em;
  transition:top .18s var(--ease);
}
.skip-link:focus{top:14px;}

.shell{
  width:100%;
  max-width:var(--shell);
  margin:0 auto;
  padding:0 24px;
}

/* ---------------- 头部 ---------------- */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--paper);
  border-bottom:var(--hair);
}

.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-2px;
  height:3px;
  z-index:3;
  pointer-events:none;
  background:transparent;
}
.scroll-progress__bar{
  display:block;
  height:100%;
  width:100%;
  background:linear-gradient(90deg,var(--ochre) 0%,var(--flag-red) 52%,var(--flag-yellow) 100%);
  transform:scaleX(0);
  transform-origin:0 50%;
  transition:transform .12s linear;
}

.header-ticker{
  height:32px;
  overflow:hidden;
  background:var(--indigo);
  color:var(--paper-white);
  box-shadow:inset 0 -2px 0 var(--ink);
  transition:height .22s var(--ease),opacity .18s var(--ease);
}
.header-ticker__inner{
  height:100%;
  max-width:var(--shell);
  margin:0 auto;
  padding:0 24px;
  display:flex;
  align-items:center;
  gap:10px;
}
.header-ticker__dot{
  flex:0 0 auto;
  width:8px;
  height:8px;
  background:var(--flag-yellow);
  box-shadow:0 0 0 2px rgba(253,251,246,.28);
}
.header-ticker__text{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  line-height:1;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.site-header[data-compact="true"] .header-ticker{
  height:0;
  opacity:0;
}

.header-shell{
  position:relative;
  width:100%;
  max-width:var(--shell);
  margin:0 auto;
  padding:14px 24px;
  display:flex;
  align-items:center;
  gap:14px;
}

.brand-island{
  display:inline-flex;
  align-items:baseline;
  gap:9px;
  padding:8px 15px;
  background:var(--paper-white);
  border:var(--hair);
  border-radius:var(--radius);
  box-shadow:4px 4px 0 var(--ochre);
  font-family:var(--font-title);
  font-weight:900;
  font-size:19px;
  line-height:1.15;
  letter-spacing:-.01em;
  white-space:nowrap;
  transition:transform .16s var(--ease),box-shadow .16s var(--ease);
}
.brand-island:hover{
  transform:translate(3px,3px);
  box-shadow:1px 1px 0 var(--ochre);
}
.brand-island__name{display:inline-block;}
.brand-island__sub{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:400;
  letter-spacing:.14em;
  color:var(--stone);
}

.nav-capsule{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:6px;
  padding:5px;
  background:var(--paper-white);
  border:var(--hair);
  border-radius:999px;
  box-shadow:var(--shadow-soft);
}
.nav-capsule__list{
  display:flex;
  align-items:center;
  gap:2px;
}
.nav-capsule__link{
  display:block;
  padding:8px 14px;
  border:2px solid transparent;
  border-radius:999px;
  font-size:14px;
  font-weight:500;
  letter-spacing:.02em;
  line-height:1.4;
  color:var(--ink);
  transition:background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.nav-capsule__link:hover{
  background:var(--ochre);
  border-color:var(--ochre);
  color:var(--paper-white);
}
.nav-capsule__link[aria-current="page"]{
  background:var(--indigo);
  border-color:var(--indigo);
  color:var(--paper-white);
}
.nav-capsule__link[aria-current="page"]:hover{
  background:var(--indigo);
  border-color:var(--flag-yellow);
}
.nav-capsule__cta{
  display:inline-block;
  padding:8px 16px;
  background:var(--ochre);
  border:2px solid var(--ink);
  border-radius:999px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  line-height:1.4;
  color:var(--paper-white);
  white-space:nowrap;
  transition:background-color .16s var(--ease),color .16s var(--ease),transform .16s var(--ease);
}
.nav-capsule__cta:hover{
  background:var(--ink);
  color:var(--flag-yellow);
  transform:translateY(-1px);
}

.nav-toggle{
  display:none;
  margin-left:auto;
  position:relative;
  width:46px;
  height:46px;
  align-items:center;
  justify-content:center;
  background:var(--paper-white);
  border:var(--hair);
  border-radius:var(--radius);
  box-shadow:3px 3px 0 var(--ink);
  transition:transform .16s var(--ease),box-shadow .16s var(--ease),background-color .16s var(--ease);
}
.nav-toggle:hover{background:var(--ochre-pale);}
.nav-toggle:active{transform:translate(2px,2px);box-shadow:1px 1px 0 var(--ink);}
.nav-toggle__bars{
  display:block;
  position:relative;
  width:20px;
  height:2px;
  background:var(--ink);
  transition:background-color .18s var(--ease);
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:20px;
  height:2px;
  background:var(--ink);
  transition:transform .18s var(--ease);
}
.nav-toggle__bars::before{top:-6px;}
.nav-toggle__bars::after{top:6px;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{background:transparent;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{transform:translateY(-6px) rotate(-45deg);}
.nav-toggle__label{
  position:absolute;
  width:1px;
  height:1px;
  padding:0;
  margin:-1px;
  overflow:hidden;
  clip-path:inset(50%);
  white-space:nowrap;
  border:0;
}

/* ---------------- 页脚 ---------------- */
.site-footer{
  position:relative;
  margin-top:96px;
  background:var(--indigo);
  color:var(--paper-white);
  border-top:var(--hair);
}
.site-footer::before{
  content:"";
  display:block;
  height:8px;
  background:linear-gradient(90deg,
    var(--flag-blue) 0 20%,
    var(--paper-white) 20% 40%,
    var(--flag-red) 40% 60%,
    var(--flag-green) 60% 80%,
    var(--flag-yellow) 80% 100%);
}
.footer-shell{
  max-width:var(--shell);
  margin:0 auto;
  padding:56px 24px 28px;
}
.footer-top{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,1.95fr);
  gap:48px;
  align-items:start;
}
.footer-brand__mark{
  font-family:var(--font-title);
  font-weight:900;
  font-size:clamp(1.4rem,2.2vw,1.75rem);
  line-height:1.2;
  letter-spacing:-.01em;
  padding-bottom:14px;
  border-bottom:2px solid var(--flag-yellow);
  display:inline-block;
}
.footer-brand__summary{
  margin-top:16px;
  max-width:34em;
  font-size:14px;
  line-height:1.85;
  color:rgba(253,251,246,.78);
}
.footer-brand__meta{
  margin-top:18px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--flag-yellow);
}
.footer-cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.footer-col__title{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  color:var(--flag-yellow);
  padding-bottom:10px;
  margin-bottom:12px;
  border-bottom:2px solid rgba(253,251,246,.24);
}
.footer-col__list{display:flex;flex-direction:column;gap:2px;}
.footer-col__link{
  display:inline-block;
  padding:5px 0;
  font-size:14px;
  line-height:1.6;
  color:rgba(253,251,246,.8);
  border-bottom:2px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.footer-col__link:hover{
  color:var(--paper-white);
  border-bottom-color:var(--flag-yellow);
}

.footer-contact{
  margin-top:44px;
  padding-top:24px;
  border-top:2px dashed rgba(253,251,246,.26);
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(190px,1fr));
  gap:20px 24px;
}
.footer-contact__label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--flag-blue);
  margin-bottom:6px;
}
.footer-contact__value{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.04em;
  line-height:1.6;
  color:var(--paper-white);
  word-break:break-word;
}
.footer-note{
  margin-top:22px;
  max-width:62em;
  font-size:13px;
  line-height:1.8;
  color:rgba(253,251,246,.62);
}
.footer-bottom{
  margin-top:32px;
  padding-top:18px;
  border-top:2px solid rgba(253,251,246,.22);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 28px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:rgba(253,251,246,.68);
}
.footer-bottom__copy{font-size:12px;}
.footer-bottom__links{
  display:flex;
  flex-wrap:wrap;
  gap:18px;
}
.footer-bottom__links a{
  color:rgba(253,251,246,.78);
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.footer-bottom__links a:hover{
  color:var(--paper-white);
  border-bottom-color:var(--flag-yellow);
}
.footer-bottom__icp{font-size:12px;}

/* ---------------- 通用组件 ---------------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--stone);
}
.breadcrumb a{
  color:var(--stone);
  border-bottom:2px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.breadcrumb a:hover{color:var(--ochre);border-bottom-color:var(--ochre);}
.breadcrumb__sep{color:var(--ochre);}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:12px 22px;
  background:var(--paper-white);
  color:var(--ink);
  border:var(--hair);
  border-radius:var(--radius);
  box-shadow:var(--shadow-soft);
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.08em;
  line-height:1.4;
  transition:transform .16s var(--ease),box-shadow .16s var(--ease),background-color .16s var(--ease),color .16s var(--ease);
}
.btn:hover{
  transform:translate(3px,3px);
  box-shadow:1px 1px 0 var(--ink);
}
.btn--primary{background:var(--ochre);color:var(--paper-white);}
.btn--primary:hover{background:var(--flag-red);}
.btn--ink{background:var(--ink);color:var(--paper-white);}
.btn--ink:hover{background:var(--indigo);color:var(--flag-yellow);}
.btn--ghost{background:transparent;box-shadow:none;}
.btn--ghost:hover{background:var(--ochre-pale);transform:none;box-shadow:none;}

.plate{
  background:var(--paper-white);
  border:var(--hair);
  border-radius:var(--radius);
  box-shadow:var(--shadow-hard);
  padding:24px;
}

.section-no{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.18em;
  color:var(--ochre);
}

.tilt-note{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--stone);
  transform:rotate(-4deg);
}
.vertical-note{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.2em;
  color:var(--stone);
  writing-mode:vertical-rl;
  transform:rotate(180deg);
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  background:var(--paper-white);
  border:2px solid var(--ink);
  border-radius:var(--radius);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  line-height:1.7;
  color:var(--ink);
}
.tag--blue{background:var(--flag-blue);border-color:var(--flag-blue);color:#FFFFFF;}
.tag--red{background:var(--flag-red);border-color:var(--flag-red);color:#FFFFFF;}
.tag--green{background:var(--flag-green);border-color:var(--flag-green);color:#FFFFFF;}
.tag--yellow{background:var(--flag-yellow);border-color:var(--ink);color:var(--ink);}

.grid{display:grid;gap:24px;}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:24px;}

.media-figure{display:block;}
.media-frame{
  position:relative;
  overflow:hidden;
  background:var(--ochre-pale);
  border:var(--hair);
  border-radius:var(--radius);
  box-shadow:var(--shadow-hard);
}
.media-frame img{width:100%;height:100%;object-fit:cover;}
.media-frame--wide{aspect-ratio:16/9;}
.media-frame--square{aspect-ratio:1/1;}
.media-frame--tall{aspect-ratio:4/5;}
.media-frame__placeholder{
  display:grid;
  place-items:center;
  width:100%;
  height:100%;
  min-height:160px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--stone);
  background-image:repeating-linear-gradient(45deg,rgba(27,26,24,.07) 0 6px,transparent 6px 12px);
}
.media-figure figcaption{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--stone);
}

[data-reveal]{transition:opacity .45s var(--ease),transform .45s var(--ease);}
html.js [data-reveal]{opacity:0;transform:translateY(14px);}
html.js [data-reveal].is-visible{opacity:1;transform:none;}

/* ---------------- 响应式 ---------------- */
@media (max-width:1080px){
  .footer-top{grid-template-columns:1fr;gap:36px;}
  .footer-cols{grid-template-columns:repeat(3,minmax(0,1fr));}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr));}
}

@media (max-width:900px){
  html{scroll-padding-top:96px;}
  .header-shell{padding:12px 16px;gap:10px;}
  .header-ticker__inner{padding:0 16px;}
  .brand-island{font-size:16px;padding:7px 12px;box-shadow:3px 3px 0 var(--ochre);}
  .brand-island__sub{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-capsule{
    position:absolute;
    top:calc(100% + 10px);
    left:16px;
    right:16px;
    margin-left:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:8px;
    padding:10px;
    border-radius:var(--radius);
    box-shadow:8px 8px 0 var(--ink);
    background:var(--paper-white);
  }
  .nav-capsule[data-open="true"]{display:flex;}
  .nav-capsule__list{flex-direction:column;align-items:stretch;gap:2px;}
  .nav-capsule__link{border-radius:var(--radius);padding:12px 14px;font-size:15px;}
  .nav-capsule__link:hover{background:var(--ochre);}
  .nav-capsule__cta{text-align:center;border-radius:var(--radius);padding:12px 16px;}
  .site-footer{margin-top:72px;}
}

@media (max-width:760px){
  body{font-size:15.5px;}
  .shell{padding:0 18px;}
  .footer-shell{padding:44px 18px 24px;}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
  .grid--2,.grid--3{grid-template-columns:1fr;}
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr));}
  .plate{padding:20px;box-shadow:4px 4px 0 var(--ink);}
}

@media (max-width:520px){
  .footer-cols{grid-template-columns:1fr;}
  .footer-contact{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
  .footer-bottom__links{gap:14px;}
  .header-ticker__text{font-size:11px;letter-spacing:.04em;}
  .grid-12{grid-template-columns:repeat(2,minmax(0,1fr));}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
  html.js [data-reveal]{opacity:1;transform:none;}
}