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

:root{
  --indigo:#101B3C;
  --indigo-2:#1C2A52;
  --indigo-3:#0B1430;
  --cream:#F4EFE4;
  --cream-2:#E7DFCE;
  --ink:#1A1512;
  --gray:#8C93A6;
  --snow:#F7FAFC;
  --cyan:#23E0D0;
  --orange:#FF6A2B;
  --pine:#2F7A5B;
  --pine-ink:#6FCFA0;

  --line-dark:rgba(247,250,252,.14);
  --line-dark-2:rgba(247,250,252,.28);
  --line-cream:rgba(26,21,18,.18);
  --cream-72:rgba(244,239,228,.72);
  --snow-86:rgba(247,250,252,.86);

  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --rail-w:96px;
  --header-h:68px;
  --gutter:clamp(16px,4vw,44px);
  --maxw:1560px;
  --bw:2px;
  --shadow-dark:6px 6px 0 rgba(11,20,48,.9);
  --shadow-cream:6px 6px 0 rgba(26,21,18,.55);
}

body{
  background-color:var(--indigo);
  color:var(--snow);
  font-family:var(--font-sans);
  font-size:17px;
  font-weight:400;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  min-height:100vh;
}

:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.section--cream :focus-visible,.card--cream :focus-visible{outline-color:var(--orange)}

.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- 排版 ---------- */
.t-display{
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.06;
  transform:scaleY(.94);
  transform-origin:left top;
}
.t-label{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:500;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--gray);
}
.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
}
.kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--orange);
  margin-bottom:14px;
}
.kicker::before{content:"";width:8px;height:8px;background:currentColor;flex:none}

.prose{max-width:38em;font-size:17px;line-height:1.95;color:var(--snow-86)}
.prose p+p{margin-top:1.1em}
.prose strong{color:var(--snow);font-weight:700}
.prose a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}
.prose ul,.prose ol{margin-top:1em;display:grid;gap:.5em}
.prose li{padding-left:1.4em;position:relative}
.prose li::before{content:"";position:absolute;left:0;top:.75em;width:8px;height:2px;background:var(--cyan)}
.prose--cream{color:var(--ink)}
.prose--cream strong{color:var(--ink)}
.prose--cream a{color:var(--pine)}
.prose--cream li::before{background:var(--orange)}

/* ---------- 布局 ---------- */
.wrap{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
@media (min-width:1080px){
  .wrap{padding-left:calc(var(--rail-w) + var(--gutter))}
}

.section{padding-block:clamp(40px,7vw,96px)}
.section--tight{padding-block:clamp(24px,4vw,48px)}
.section--cream{background-color:var(--cream);color:var(--ink)}
.section--cream .t-label{color:rgba(26,21,18,.55)}

.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2vw,28px)}
.col-main{grid-column:span 12;min-width:0}
.col-side{grid-column:span 12;min-width:0}
@media (min-width:900px){
  .col-main{grid-column:1 / span 7}
  .col-side{grid-column:9 / span 4}
}

.grid-bg{
  background-image:
    repeating-linear-gradient(0deg,transparent 0 7px,rgba(140,147,166,.13) 7px 8px),
    repeating-linear-gradient(90deg,transparent 0 7px,rgba(140,147,166,.13) 7px 8px);
}
.section--cream .grid-bg{
  background-image:
    repeating-linear-gradient(0deg,transparent 0 7px,rgba(26,21,18,.09) 7px 8px),
    repeating-linear-gradient(90deg,transparent 0 7px,rgba(26,21,18,.09) 7px 8px);
}

.divider{height:var(--bw);border:0;background:var(--line-dark);margin-block:clamp(24px,4vw,40px)}
.divider--cream{background:var(--line-cream)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:10px 18px;
  border:var(--bw) solid var(--snow);
  background-color:transparent;
  color:var(--snow);
  font-size:14px;
  font-weight:700;
  letter-spacing:.02em;
  line-height:1.4;
  white-space:nowrap;
  transition:transform .14s ease,box-shadow .14s ease,background-color .14s ease,color .14s ease,border-color .14s ease;
}
.btn:hover{background-color:var(--snow);color:var(--indigo);transform:translate(-2px,-2px);box-shadow:4px 4px 0 var(--cyan)}
.btn:active{transform:translate(0,0);box-shadow:none}
.btn-solid{background-color:var(--cyan);border-color:var(--cyan);color:var(--indigo)}
.btn-solid:hover{background-color:var(--snow);border-color:var(--snow);color:var(--indigo);box-shadow:4px 4px 0 var(--orange)}
.btn-ghost{border-color:var(--line-dark-2);font-weight:500;font-size:13px}
.btn-ghost:hover{border-color:var(--snow);background-color:var(--snow);color:var(--indigo);box-shadow:4px 4px 0 var(--cyan)}

/* ---------- 卡片与标签 ---------- */
.card{
  background-color:var(--indigo-2);
  border:var(--bw) solid var(--line-dark-2);
  box-shadow:var(--shadow-dark);
  padding:clamp(16px,2.4vw,26px);
  transition:transform .14s ease,box-shadow .14s ease,border-color .14s ease;
}
.card:hover{transform:translate(-2px,-2px);box-shadow:8px 8px 0 rgba(11,20,48,.95);border-color:var(--cyan)}
.card--cream{
  background-color:var(--cream);
  color:var(--ink);
  border-color:var(--ink);
  box-shadow:var(--shadow-cream);
}
.card--cream:hover{box-shadow:8px 8px 0 rgba(26,21,18,.6);border-color:var(--ink)}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 8px;
  border:var(--bw) solid currentColor;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  line-height:1.6;
  white-space:nowrap;
}
.tag--cyan{color:var(--cyan)}
.tag--orange{color:var(--orange)}
.tag--pine{color:var(--pine-ink);border-color:var(--pine)}
.tag--gray{color:var(--gray)}
.section--cream .tag--cyan{color:#0E8F85}
.section--cream .tag--orange{color:#C4461A}
.section--cream .tag--gray{color:#5A5A55}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding-block:clamp(12px,2vw,20px)}
.breadcrumb-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--gray);
}
.breadcrumb-item{display:inline-flex;align-items:center}
.breadcrumb-item+.breadcrumb-item::before{content:"/";margin-right:8px;color:rgba(140,147,166,.6)}
.breadcrumb-item a{color:var(--gray);border-bottom:1px solid transparent}
.breadcrumb-item a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.breadcrumb-item[aria-current="page"]{color:var(--snow)}

/* ---------- 图片容器 ---------- */
.media-frame{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16/9;
  overflow:hidden;
  border:var(--bw) solid var(--line-dark-2);
  background-color:var(--indigo-2);
  background-image:
    repeating-linear-gradient(0deg,transparent 0 7px,rgba(140,147,166,.16) 7px 8px),
    repeating-linear-gradient(90deg,transparent 0 7px,rgba(140,147,166,.16) 7px 8px);
}
.media-frame>img,
.media-frame>picture>img{width:100%;height:100%;object-fit:cover;display:block}
.media-frame--tall{aspect-ratio:4/5}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--square{aspect-ratio:1/1}
.section--cream .media-frame{border-color:var(--line-cream);background-color:var(--cream-2)}
.media-cap{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--gray);
}
.section--cream .media-cap{color:rgba(26,21,18,.6)}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:8px;
  left:8px;
  z-index:120;
  padding:10px 16px;
  background-color:var(--cyan);
  color:var(--indigo);
  border:var(--bw) solid var(--ink);
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  transform:translateY(-180%);
  transition:transform .16s ease;
}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0)}

/* ---------- 页头 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:20;
  background-color:var(--indigo);
}
.header-bar{
  position:relative;
  background-color:var(--indigo);
  border-bottom:var(--bw) solid var(--indigo-2);
}
.header-bar-inner{
  display:flex;
  align-items:center;
  gap:clamp(12px,2vw,28px);
  min-height:var(--header-h);
  padding-block:8px;
}
.header-brand{
  display:flex;
  align-items:center;
  gap:clamp(12px,2vw,24px);
  min-width:0;
}
.brand-lockup{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  display:grid;
  place-items:center;
  width:38px;
  height:38px;
  flex:none;
  background-color:var(--cyan);
  color:var(--indigo);
  border:var(--bw) solid var(--ink);
  box-shadow:3px 3px 0 rgba(35,224,208,.3);
  font-size:19px;
  font-weight:900;
  line-height:1;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:17px;font-weight:900;letter-spacing:.02em;color:var(--snow)}
.brand-sub{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  color:var(--gray);
}
.season-switch{
  display:flex;
  align-items:center;
  gap:8px;
  padding-left:clamp(10px,1.6vw,20px);
  border-left:var(--bw) solid var(--line-dark);
}
.season-label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--gray);
}
.season-options{display:flex;gap:4px}
.season-btn{
  padding:4px 9px;
  border:var(--bw) solid var(--line-dark);
  color:var(--gray);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  line-height:1.4;
  transition:background-color .14s ease,color .14s ease,border-color .14s ease;
}
.season-btn:hover{color:var(--snow);border-color:var(--snow)}
.season-btn[aria-pressed="true"]{background-color:var(--cyan);border-color:var(--cyan);color:var(--indigo)}

.site-nav{margin-left:auto}
.nav-list{display:flex;align-items:center;gap:clamp(4px,1.4vw,18px)}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 2px;
  color:var(--snow);
  font-size:15px;
  font-weight:500;
  line-height:1.5;
  white-space:nowrap;
  transition:color .14s ease,transform .14s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background-color:var(--cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .18s ease;
}
.nav-link:hover{color:var(--cyan);transform:translateY(-1px)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--cyan);font-weight:700}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}

.header-actions{display:flex;align-items:center;gap:10px;flex:none}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:8px 12px;
  border:var(--bw) solid var(--line-dark-2);
  color:var(--snow);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  transition:border-color .14s ease,color .14s ease;
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle-bars{display:grid;gap:4px;width:16px}
.nav-toggle-bars i{display:block;height:2px;background-color:currentColor}

.header-progress{height:3px;background-color:var(--indigo-2)}
.header-progress>span{
  display:block;
  width:100%;
  height:100%;
  background-color:var(--cyan);
  transform:scaleX(0);
  transform-origin:left center;
}

.brand-rail{
  position:fixed;
  top:0;
  left:0;
  bottom:0;
  z-index:30;
  width:var(--rail-w);
  display:none;
  flex-direction:column;
  align-items:center;
  gap:18px;
  padding:calc(var(--header-h) + 20px) 8px 24px;
  background-color:var(--indigo-2);
  border-right:var(--bw) solid var(--indigo-3);
}
.rail-index{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  color:var(--cyan);
}
.rail-brand{
  writing-mode:vertical-rl;
  padding-block:10px;
  border-block:var(--bw) solid var(--line-dark);
  color:var(--snow);
  font-size:20px;
  font-weight:900;
  letter-spacing:.18em;
  line-height:1;
}
.rail-brand:hover{color:var(--cyan)}
.rail-tagline{
  writing-mode:vertical-rl;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  color:var(--gray);
}
.rail-terms{
  margin-top:auto;
  width:100%;
  display:flex;
  flex-direction:column;
  align-items:stretch;
  gap:8px;
}
.rail-title{
  text-align:center;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  color:var(--orange);
}
.rail-link{
  display:block;
  padding:6px 2px;
  border:var(--bw) solid var(--line-dark);
  color:var(--snow);
  font-size:12px;
  line-height:1.3;
  text-align:center;
  transition:border-color .14s ease,color .14s ease,background-color .14s ease;
}
.rail-link:hover{border-color:var(--cyan);color:var(--cyan);background-color:rgba(35,224,208,.08)}
@media (min-width:1080px){.brand-rail{display:flex}}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:clamp(48px,8vw,120px);
  background-color:var(--ink);
  color:var(--cream);
  border-top:var(--bw) solid var(--cyan);
}
.footer-inner{padding-block:clamp(36px,6vw,72px) clamp(20px,3vw,32px)}
.footer-top{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(24px,4vw,52px);
  padding-bottom:clamp(24px,4vw,40px);
  border-bottom:1px solid rgba(244,239,228,.16);
}
@media (min-width:900px){
  .footer-top{grid-template-columns:minmax(220px,1fr) minmax(360px,1.6fr)}
}
.footer-brand-name{
  font-size:26px;
  font-weight:900;
  letter-spacing:-.01em;
  line-height:1.2;
  color:var(--cream);
  transform:scaleY(.94);
  transform-origin:left top;
}
.footer-brand-note{
  margin-top:10px;
  max-width:32ch;
  font-size:14px;
  line-height:1.8;
  color:var(--cream-72);
}
.footer-stamp{
  margin-top:14px;
  font-size:11px;
  letter-spacing:.14em;
  color:var(--orange);
}
.footer-cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(16px,2vw,32px);
}
.footer-col ul{display:grid;gap:10px}
.footer-col-title{
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--cyan);
}
.footer-link{
  display:inline-block;
  font-size:14px;
  line-height:1.7;
  color:rgba(244,239,228,.8);
  border-bottom:1px solid transparent;
  transition:color .14s ease,transform .14s ease,border-color .14s ease;
}
.footer-link:hover{color:var(--cyan);border-bottom-color:var(--cyan);transform:translateX(4px)}

.footer-contact{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(16px,2vw,32px);
  padding-block:clamp(24px,4vw,36px);
  border-bottom:1px solid rgba(244,239,228,.16);
}
.contact-label{
  margin-bottom:6px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  color:var(--gray);
}
.contact-value{
  font-size:14px;
  line-height:1.7;
  color:var(--cream);
  overflow-wrap:anywhere;
}
.contact-item--note .contact-value{color:var(--cream-72)}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  padding-top:20px;
}
.footer-copyright{font-size:13px;color:var(--cream-72)}
.footer-legal{font-size:12px;letter-spacing:.08em;color:var(--gray)}
.footer-closing{font-size:13px;line-height:1.7;color:var(--cream-72);flex:1 1 260px}

.to-top{
  position:fixed;
  right:clamp(14px,3vw,32px);
  bottom:clamp(14px,3vw,32px);
  z-index:50;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 14px;
  background-color:var(--indigo-2);
  color:var(--snow);
  border:var(--bw) solid var(--cyan);
  box-shadow:4px 4px 0 rgba(35,224,208,.3);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s ease,background-color .14s ease,color .14s ease;
}
.to-top[data-visible]{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background-color:var(--cyan);color:var(--indigo)}

/* ---------- 显现 ---------- */
[data-reveal-pending]{opacity:0;transform:translateY(8px)}
[data-reveal-pending][data-revealed]{
  opacity:1;
  transform:none;
  transition:opacity .34s ease,transform .34s ease;
}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .site-nav{
    position:fixed;
    left:0;
    right:0;
    bottom:0;
    z-index:60;
    margin-left:0;
    max-height:82vh;
    overflow-y:auto;
    padding:14px var(--gutter) calc(18px + env(safe-area-inset-bottom));
    background-color:var(--indigo-2);
    border-top:var(--bw) solid var(--cyan);
    border-left:var(--bw) solid var(--indigo-3);
    border-right:var(--bw) solid var(--indigo-3);
    transform:translateY(104%);
    transition:transform .22s ease;
  }
  .site-nav[data-open]{transform:translateY(0)}
  html[data-nav-open] body{overflow:hidden}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{display:block;padding:14px 4px;border-bottom:1px solid var(--line-dark);font-size:17px}
  .nav-link::after{display:none}
  .nav-link:hover{transform:none}
  .nav-link[aria-current="page"]::before{content:"▍";margin-right:8px;color:var(--cyan)}
  .nav-toggle{display:inline-flex}
  .header-actions{margin-left:auto}
  .header-actions .btn{display:none}
}

@media (max-width:760px){
  body{font-size:16px}
  .season-switch{display:none}
  .footer-contact{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:560px){
  .brand-sub{display:none}
  .footer-cols{grid-template-columns:1fr}
  .footer-contact{grid-template-columns:1fr}
  .to-top{right:12px;bottom:12px;padding:9px 12px}
}

/* ---------- 减少动态效果 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .btn:hover,.card:hover,.footer-link:hover,.nav-link:hover{transform:none}
  [data-reveal-pending]{opacity:1;transform:none}
}