:root{
  --paper:#F6EDDF;
  --card:#FFF9EF;
  --clay:#B5472E;
  --clay-deep:#5A2A1E;
  --ink:#211815;
  --lake:#4F6468;
  --mist:#D8E1DF;
  --alert:#FF6B1A;
  --fix:#2F6B4F;
  --watch:#D9A441;
  --font-display:"Noto Serif SC Black","Source Han Serif Heavy","Songti SC","STSong",serif;
  --font-mono:"Sarasa Mono SC","Noto Sans Mono CJK SC",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --shadow:6px 6px 0 var(--clay-deep);
  --shadow-sm:4px 4px 0 var(--clay-deep);
  --wrap:1180px;
  --edge:24px;
}

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

html{
  -webkit-text-size-adjust:100%;
  background-color:var(--paper);
  background-image:
    linear-gradient(to right,rgba(90,42,30,.055) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(90,42,30,.055) 1px,transparent 1px);
  background-size:52px 52px;
  scroll-behavior:smooth;
}

body{
  margin:0;
  min-height:100vh;
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:17px;
  font-weight:500;
  line-height:1.72;
  letter-spacing:.01em;
}

img,svg,video{max-width:100%;height:auto;display:block}
a{color:var(--clay)}
a:hover{color:var(--clay-deep)}
::selection{background:var(--alert);color:var(--ink)}

:focus-visible{outline:3px solid var(--alert);outline-offset:3px}

h1,h2,h3,h4,h5,h6{
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.12;
  letter-spacing:.01em;
  margin:0 0 .55em;
}
h1{font-size:clamp(2.1rem,5vw,3.5rem)}
h2{font-size:clamp(1.5rem,3vw,2.05rem)}
h3{font-size:1.22rem;line-height:1.3}
h4{font-size:1.02rem;line-height:1.35}
p{margin:0 0 1.05em}
ul,ol{margin:0 0 1.05em;padding-left:1.35em}
li{margin:0 0 .4em}
hr{border:0;border-top:2px solid var(--ink);margin:32px 0}

/* ---------- 布局工具 ---------- */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 var(--edge);
}

.prose{max-width:66ch}
.prose > *:first-child{margin-top:0}
.prose > *:last-child{margin-bottom:0}
.prose p{margin:0 0 1.15em}
.prose strong{font-weight:700;color:var(--clay-deep)}
.prose code{
  font-family:var(--font-mono);
  font-size:.92em;
  background:var(--mist);
  border:1px solid rgba(90,42,30,.28);
  padding:1px 6px;
}

.grid{display:grid;gap:22px;grid-template-columns:minmax(0,1fr)}
.bento{display:grid;gap:22px;grid-template-columns:repeat(12,minmax(0,1fr))}
.bento > *{grid-column:span 12;min-width:0}

/* ---------- 跳过链接 ---------- */
.skip-link{
  position:absolute;
  top:-90px;
  left:16px;
  z-index:200;
  display:inline-block;
  padding:11px 18px;
  background:var(--ink);
  color:var(--card);
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
  text-decoration:none;
  border:2px solid var(--alert);
  box-shadow:var(--shadow-sm);
  transition:top .16s ease;
}
.skip-link:focus{top:14px;color:var(--card)}

/* ---------- 页头 ---------- */
.site-header{position:relative;z-index:50}

.header-upper{
  background:var(--clay-deep);
  color:var(--card);
  border-bottom:3px solid var(--ink);
}
.header-upper__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px 20px;
  padding-top:11px;
  padding-bottom:11px;
}

.masthead-brand{
  display:flex;
  align-items:center;
  gap:13px;
  text-decoration:none;
  color:inherit;
}
.masthead-brand__mark{
  display:grid;
  place-items:center;
  flex:none;
  width:36px;
  height:36px;
  background:var(--clay);
  color:var(--card);
  font-family:var(--font-display);
  font-size:19px;
  font-weight:900;
  line-height:1;
  border:2px solid var(--card);
  box-shadow:3px 3px 0 var(--ink);
}
.masthead-brand__text{display:flex;flex-direction:column;line-height:1.24}
.masthead-brand__text strong{
  font-family:var(--font-display);
  font-size:19px;
  font-weight:900;
  letter-spacing:.06em;
}
.masthead-brand__text em{
  font-style:normal;
  font-size:11px;
  font-weight:600;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:#E6CBB8;
}

.masthead-status{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:6px 13px;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.07em;
  color:var(--card);
  text-decoration:none;
  border:2px solid rgba(255,249,239,.42);
}
.masthead-status:hover{color:var(--ink);background:var(--alert);border-color:var(--ink)}
.masthead-status__dot{
  width:8px;
  height:8px;
  flex:none;
  border-radius:50%;
  background:var(--alert);
  box-shadow:0 0 0 3px rgba(255,107,26,.28);
}
.masthead-status:hover .masthead-status__dot{background:var(--ink)}

.header-lower{
  background:var(--paper);
  border-bottom:4px solid var(--ink);
}

.alert-rail{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px 12px;
  margin:16px 0 0;
  padding:9px 14px 9px 12px;
  background:var(--card);
  color:var(--ink);
  text-decoration:none;
  font-size:14px;
  border:2px solid var(--ink);
  border-left:10px solid var(--alert);
  box-shadow:5px 5px 0 rgba(90,42,30,.18);
  transition:transform .14s ease,box-shadow .14s ease;
}
.alert-rail:hover{
  transform:translate(-2px,-2px);
  box-shadow:7px 7px 0 rgba(90,42,30,.26);
  color:var(--ink);
}
.alert-rail__tag{
  flex:none;
  padding:2px 8px;
  background:var(--alert);
  color:var(--ink);
  font-size:11.5px;
  font-weight:700;
  letter-spacing:.16em;
  border:2px solid var(--ink);
}
.alert-rail__text{font-weight:700;letter-spacing:.02em}
.alert-rail__go{
  margin-left:auto;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--clay);
}

.header-lower__inner{
  display:flex;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  padding:15px 0 18px;
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:10px 14px;
  background:var(--ink);
  color:var(--card);
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:700;
  letter-spacing:.12em;
  border:2px solid var(--ink);
  box-shadow:4px 4px 0 var(--clay);
  cursor:pointer;
}
.nav-toggle:hover{background:var(--clay-deep)}
.nav-toggle__bars{display:grid;gap:3px;width:18px}
.nav-toggle__bars i{
  display:block;
  height:2px;
  background:var(--card);
  transition:transform .16s ease,opacity .16s ease;
}
.site-header[data-open="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(5px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle__bars i:nth-child(2){opacity:0}
.site-header[data-open="true"] .nav-toggle__bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.nav-toggle__label{line-height:1}

.site-nav{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:14px 18px;
  flex:1 1 auto;
  min-width:0;
}
.nav-list{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:3px;
  flex:1 1 auto;
  list-style:none;
  margin:0;
  padding:0;
}
.nav-item{margin:0}
.nav-link{
  display:flex;
  align-items:center;
  gap:8px;
  padding:8px 12px 8px 10px;
  color:var(--ink);
  text-decoration:none;
  font-size:14.5px;
  font-weight:600;
  letter-spacing:.02em;
  border:2px solid transparent;
  border-left:4px solid transparent;
  transition:background .16s ease,border-color .16s ease,color .16s ease,transform .16s ease;
}
.nav-link:hover{
  background:var(--mist);
  border-color:var(--ink);
  border-left:4px solid var(--lake);
  transform:translateY(-1px);
}
.nav-idx{
  font-size:11px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--lake);
  font-variant-numeric:tabular-nums;
}
.nav-link:hover .nav-idx{color:var(--clay)}
.nav-name{line-height:1.3}
.nav-dot{
  width:7px;
  height:7px;
  flex:none;
  border-radius:50%;
  background:var(--lake);
}
.nav-link[aria-current="page"],
.nav-link[aria-current="page"]:hover{
  background:var(--card);
  color:var(--ink);
  border-color:var(--ink);
  border-left:6px solid var(--alert);
  box-shadow:4px 4px 0 rgba(90,42,30,.22);
  transform:none;
}
.nav-link[aria-current="page"] .nav-idx{color:var(--alert)}
.nav-link[aria-current="page"] .nav-dot{background:var(--alert)}

.nav-cta{flex:none;white-space:nowrap}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 18px;
  font-family:var(--font-mono);
  font-size:14px;
  font-weight:700;
  letter-spacing:.04em;
  line-height:1.2;
  text-decoration:none;
  color:var(--ink);
  background:var(--card);
  border:2px solid var(--ink);
  box-shadow:var(--shadow-sm);
  cursor:pointer;
  transition:transform .14s ease,box-shadow .14s ease,background .14s ease;
}
.btn:hover{
  color:var(--ink);
  transform:translate(-2px,-2px);
  box-shadow:6px 6px 0 var(--clay-deep);
}
.btn:active{transform:translate(2px,2px);box-shadow:1px 1px 0 var(--clay-deep)}
.btn--alert{background:var(--alert);color:var(--ink);border-color:var(--ink)}
.btn--clay{background:var(--clay);color:var(--card)}
.btn--clay:hover{color:var(--card)}
.btn--ghost{background:transparent}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:76px;
  background:var(--ink);
  color:var(--card);
  border-top:6px solid var(--clay);
}
.footer-grid{
  display:grid;
  gap:34px;
  grid-template-columns:1.35fr 1fr 1.25fr 1fr;
  padding-top:46px;
  padding-bottom:34px;
}
.footer-brand__mark{
  display:grid;
  place-items:center;
  width:46px;
  height:46px;
  margin-bottom:15px;
  background:var(--clay);
  color:var(--card);
  font-family:var(--font-display);
  font-size:23px;
  font-weight:900;
  line-height:1;
  border:2px solid var(--card);
  box-shadow:4px 4px 0 var(--alert);
}
.footer-brand__name{
  font-family:var(--font-display);
  font-size:22px;
  font-weight:900;
  letter-spacing:.06em;
  margin:0 0 8px;
  color:var(--card);
}
.footer-brand__tip{
  margin:0;
  padding-left:11px;
  font-size:13.5px;
  line-height:1.6;
  color:#D7C2B1;
  border-left:4px solid var(--watch);
}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.footer-col__title{
  margin:0 0 14px;
  padding-bottom:9px;
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:700;
  letter-spacing:.24em;
  color:var(--watch);
  border-bottom:2px solid rgba(246,237,223,.22);
}
.footer-col a{
  display:inline-block;
  font-size:14.5px;
  color:var(--card);
  text-decoration:none;
  border-bottom:1px solid transparent;
  padding-bottom:1px;
  transition:color .14s ease,border-color .14s ease;
}
.footer-col a:hover{color:#FFD9C4;border-bottom-color:var(--alert)}
.footer-contact li{
  display:grid;
  gap:2px;
  font-size:13.5px;
  line-height:1.55;
  color:#E9DCD1;
  word-break:break-word;
}
.footer-contact__k{
  font-size:10.5px;
  font-weight:700;
  letter-spacing:.2em;
  color:var(--watch);
}
.footer-note{
  margin:15px 0 0;
  padding-top:13px;
  font-size:12.5px;
  line-height:1.65;
  color:#BFA99A;
  border-top:1px dashed rgba(246,237,223,.24);
}
.footer-icp{
  margin:17px 0 0;
  font-size:12.5px;
  letter-spacing:.08em;
  color:#BFA99A;
}
.footer-legal{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px 22px;
  padding:20px 0 34px;
  font-size:12.5px;
  letter-spacing:.06em;
  color:#B29B8B;
  border-top:2px solid rgba(246,237,223,.16);
}
.footer-legal__copy{margin:0}
.footer-legal__tip{margin:0;letter-spacing:.14em;text-transform:uppercase;color:#8E7A6C}

/* ---------- 通用组件 ---------- */
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  list-style:none;
  margin:0 0 20px;
  padding:0;
  font-size:12.5px;
  letter-spacing:.05em;
}
.crumbs li{display:flex;align-items:center;gap:8px;margin:0}
.crumbs li + li::before{content:"›";color:var(--clay);font-weight:700}
.crumbs a{color:var(--lake);text-decoration:none;border-bottom:1px solid currentColor}
.crumbs a:hover{color:var(--clay)}

.card{
  position:relative;
  padding:22px;
  background:var(--card);
  color:var(--ink);
  border:2px solid var(--ink);
  box-shadow:var(--shadow-sm);
}
.card--alert{border-left:8px solid var(--alert)}
.card--lake{background:var(--lake);color:var(--card);border-color:var(--ink)}
.card--lake h2,.card--lake h3{color:var(--card)}

.status-chip{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:4px 9px;
  font-size:11.5px;
  font-weight:700;
  letter-spacing:.13em;
  color:var(--ink);
  background:var(--mist);
  border:2px solid var(--ink);
  line-height:1.4;
}
.status-chip--alert{background:var(--alert)}
.status-chip--fix{background:var(--fix);color:var(--card)}
.status-chip--watch{background:var(--watch)}
.status-chip--neutral{background:var(--mist)}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  margin:0 0 12px;
  font-size:11.5px;
  font-weight:700;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--clay);
}
.eyebrow::before{content:"";width:22px;height:3px;background:var(--clay)}

.section-title{
  margin:0 0 12px;
  padding-left:14px;
  font-family:var(--font-display);
  font-size:clamp(1.4rem,2.6vw,1.9rem);
  font-weight:900;
  line-height:1.16;
  border-left:8px solid var(--clay);
}

.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  aspect-ratio:16/9;
  background:var(--mist);
  border:2px solid var(--ink);
  box-shadow:var(--shadow-sm);
}
.media-frame img,
.media-frame video{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.94) contrast(1.04);
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:repeating-linear-gradient(to bottom,rgba(33,24,21,.08) 0 1px,transparent 1px 4px);
  mix-blend-mode:multiply;
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--square{aspect-ratio:1/1}
.media-frame--tall{aspect-ratio:3/4}
.media-frame__note{
  position:absolute;
  left:0;
  bottom:0;
  z-index:1;
  padding:5px 11px;
  background:var(--ink);
  color:var(--card);
  font-size:11px;
  letter-spacing:.14em;
}

.expand-group{
  background:var(--card);
  border:2px solid var(--ink);
  box-shadow:var(--shadow-sm);
}
.expand-trigger{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  width:100%;
  padding:16px 18px;
  background:transparent;
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:15px;
  font-weight:700;
  line-height:1.4;
  text-align:left;
  border:0;
  border-left:8px solid var(--lake);
  cursor:pointer;
}
.expand-trigger::after{
  content:"+";
  flex:none;
  font-size:20px;
  font-weight:700;
  line-height:1;
  color:var(--clay);
}
.expand-trigger[aria-expanded="true"]{
  background:rgba(255,107,26,.08);
  border-left-color:var(--alert);
}
.expand-trigger[aria-expanded="true"]::after{content:"–";color:var(--clay-deep)}
.expand-panel{
  padding:4px 18px 18px;
  border-top:2px dashed rgba(90,42,30,.32);
}
.expand-panel > *:first-child{margin-top:14px}
.expand-panel > *:last-child{margin-bottom:0}

.scroll-signal{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:120;
  height:4px;
  background:var(--alert);
  transform:scaleX(0);
  transform-origin:0 50%;
  opacity:0;
  pointer-events:none;
  transition:opacity .2s ease;
}

/* ---------- 响应式 ---------- */
@media (min-width:640px){
  .grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (min-width:760px){
  .bento > .col-4{grid-column:span 4}
  .bento > .col-5{grid-column:span 5}
  .bento > .col-6{grid-column:span 6}
  .bento > .col-7{grid-column:span 7}
  .bento > .col-8{grid-column:span 8}
  .bento > .col-12{grid-column:span 12}
}

@media (min-width:900px){
  .grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
  .grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
}

@media (max-width:1099px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}

@media (max-width:899px){
  .header-lower__inner{
    flex-direction:column;
    align-items:stretch;
    gap:12px;
  }
  .nav-toggle{display:inline-flex;align-self:flex-start}
  .site-nav{
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:12px;
    width:100%;
    padding-top:4px;
    border-top:2px dashed rgba(90,42,30,.3);
  }
  .site-header[data-open="true"] .site-nav{display:flex}
  .nav-list{flex-direction:column;align-items:stretch;gap:2px}
  .nav-link{
    padding:12px 12px 12px 10px;
    font-size:15px;
    border-left:4px solid transparent;
  }
  .nav-link:hover{border-left-width:4px}
  .nav-link[aria-current="page"],
  .nav-link[aria-current="page"]:hover{border-left:6px solid var(--alert)}
  .nav-cta{width:100%;justify-content:center}
  .alert-rail__go{margin-left:0}
  h1{font-size:clamp(1.85rem,6.4vw,2.6rem)}
  .site-footer{margin-top:54px}
}

@media (max-width:639px){
  :root{--edge:18px}
  body{font-size:16px}
  .header-upper__inner{flex-direction:column;align-items:flex-start;gap:10px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px;padding-top:36px}
  .footer-legal{flex-direction:column;align-items:flex-start;padding-bottom:28px}
  .alert-rail{font-size:13px;padding:8px 11px 8px 10px}
  .alert-rail__tag{letter-spacing:.1em}
  .card{padding:18px}
  .expand-panel{padding:2px 14px 16px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .alert-rail:hover,
  .btn:hover,
  .btn:active,
  .nav-link:hover{transform:none}
  .scroll-signal{transition:none}
}