:root{
  --ink:#060F18;
  --navy:#0B1B2B;
  --navy-lift:#10263B;
  --paper:#F4EFE6;
  --paper-2:#E2D9C8;
  --red:#D7263D;
  --red-dark:#8E1A29;
  --orange:#F49D37;
  --cyan:#3EC1D3;
  --mist:#7C8B99;
  --white:#FFFFFF;
  --line-w:3px;
  --line:var(--line-w) solid var(--ink);
  --shadow-hard:8px 8px 0 var(--ink);
  --shadow-soft:4px 4px 0 rgba(6,15,24,.9);
  --maxw:1440px;
  --gutter:64px;
  --font-head:'Oswald','Barlow Condensed','Noto Sans SC','Source Han Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-body:'Noto Sans SC','Source Han Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  --font-mono:'IBM Plex Mono','JetBrains Mono','SFMono-Regular',ui-monospace,monospace;
  --ease:cubic-bezier(.2,.8,.2,1);
  --dur:180ms;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--paper);
  background-image:radial-gradient(circle at 1px 1px,rgba(6,15,24,.07) 1px,transparent 0);
  background-size:6px 6px;
  color:var(--navy);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure{margin:0}
a{color:inherit}
button{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}
.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}
.skip-link{
  position:fixed;left:16px;top:-120px;z-index:200;
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 20px;
  background:var(--orange);color:var(--ink);
  border:var(--line);border-radius:999px;
  font-family:var(--font-head);font-weight:700;font-size:15px;letter-spacing:.04em;
  text-decoration:none;
  box-shadow:var(--shadow-soft);
  transition:top 160ms var(--ease);
}
.skip-link:focus{top:14px}

/* ---------- 悬浮胶囊浮岛 header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  padding:14px var(--gutter) 6px;
  background:linear-gradient(180deg,var(--paper) 0 58%,rgba(244,239,230,0) 100%);
}
.header-strip{
  position:relative;
  display:grid;
  grid-template-columns:auto auto minmax(0,1fr) auto;
  align-items:center;
  gap:clamp(8px,1.2vw,20px);
  max-width:var(--maxw);
  margin-inline:auto;
  padding:8px 10px 8px 12px;
  background-color:var(--navy);
  background-image:
    linear-gradient(rgba(244,239,230,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(244,239,230,.05) 1px,transparent 1px);
  background-size:44px 44px;
  color:var(--paper);
  border:var(--line);
  border-radius:999px;
  box-shadow:var(--shadow-soft);
  transition:padding var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.site-header.is-tight .header-strip{
  padding-block:4px;
  background-color:#091724;
  box-shadow:5px 5px 0 var(--ink);
}
.brand{
  grid-column:1;
  display:inline-flex;align-items:center;gap:10px;
  text-decoration:none;color:var(--paper);
  padding:2px 4px;border-radius:999px;
  transition:color var(--dur) var(--ease);
}
.brand:hover{color:var(--orange)}
.brand__plate{
  display:grid;place-items:center;
  width:34px;height:34px;flex:0 0 auto;
  background:var(--red);
  border:2px solid var(--ink);
  border-radius:8px;
  font-family:var(--font-head);font-weight:800;font-size:14px;letter-spacing:.02em;
  color:var(--white);
}
.brand__text{display:flex;flex-direction:column;line-height:1.1}
.brand__name{font-family:var(--font-head);font-weight:800;font-size:17px;letter-spacing:.06em;white-space:nowrap}
.brand__meta{font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;color:var(--mist);text-transform:uppercase;white-space:nowrap}
.header-round{grid-column:2;display:inline-flex;align-items:center;gap:8px}
.header-round__label{font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;color:var(--mist);text-transform:uppercase;white-space:nowrap}
.round-chip{
  display:inline-flex;align-items:center;
  padding:5px 12px;
  background:var(--orange);color:var(--ink);
  border:2px solid var(--ink);border-radius:999px;
  font-family:var(--font-mono);font-size:13px;font-weight:600;letter-spacing:.04em;
  white-space:nowrap;cursor:pointer;
  transition:background-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.round-chip:hover{background:var(--red);color:var(--white)}
.round-chip.is-swapping{animation:chip-swap 140ms var(--ease) 1}
@keyframes chip-swap{from{opacity:.35;transform:translateY(2px)}to{opacity:1;transform:none}}
.nav{grid-column:3;justify-self:center;min-width:0}
.nav__list{display:flex;align-items:center;gap:2px;flex-wrap:nowrap}
.nav__item{flex:0 0 auto}
.nav__link{
  display:inline-flex;align-items:center;
  padding:7px 11px;
  color:var(--paper);text-decoration:none;
  font-size:14px;letter-spacing:.04em;white-space:nowrap;
  border:2px solid transparent;border-radius:999px;
  transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav__link:hover{border-color:var(--cyan);background:rgba(62,193,211,.12);color:var(--white)}
.nav__link[aria-current="page"]{
  background:var(--red);color:var(--white);
  border-color:var(--ink);
  box-shadow:inset 0 0 0 2px rgba(255,255,255,.2);
}
.header-current{
  grid-column:3;grid-row:1;justify-self:center;
  display:none;align-items:center;
  padding:6px 14px;
  border:2px solid var(--orange);border-radius:999px;
  font-family:var(--font-head);font-weight:700;font-size:14px;letter-spacing:.1em;
  color:var(--orange);white-space:nowrap;
}
.site-header.is-tight .nav{display:none}
.site-header.is-tight .header-current{display:inline-flex}
.header-actions{grid-column:4;display:inline-flex;align-items:center;gap:10px;justify-self:end}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;
  border:var(--line-w) solid var(--ink);border-radius:999px;
  font-family:var(--font-head);font-weight:700;font-size:15px;letter-spacing:.06em;
  text-decoration:none;cursor:pointer;white-space:nowrap;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.btn--signal{background:var(--red);color:var(--white);box-shadow:4px 4px 0 var(--ink)}
.btn--signal:hover{background:var(--red-dark);transform:translate(-2px,-2px);box-shadow:8px 8px 0 var(--ink)}
.btn--signal:active{transform:none;box-shadow:2px 2px 0 var(--ink)}
.btn--line{background:transparent;color:var(--paper);border-color:var(--paper);box-shadow:4px 4px 0 var(--ink)}
.btn--line:hover{border-color:var(--orange);color:var(--orange);transform:translate(-2px,-2px);box-shadow:8px 8px 0 var(--ink)}
.status{display:inline-flex;align-items:center;gap:7px}
.status__dot{
  width:8px;height:8px;flex:0 0 auto;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 0 3px rgba(62,193,211,.22);
}
.status__text{font-family:var(--font-mono);font-size:11px;letter-spacing:.05em;color:var(--mist);white-space:nowrap}
.nav-toggle{
  display:none;align-items:center;gap:8px;
  padding:8px 12px;
  background:transparent;color:var(--paper);
  border:2px solid rgba(244,239,230,.4);border-radius:999px;
  cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle__bars{display:grid;gap:3px;width:16px}
.nav-toggle__bars i{display:block;height:2px;background:currentColor;border-radius:2px}
.nav-toggle__label{font-family:var(--font-head);font-weight:700;font-size:13px;letter-spacing:.08em}
.scroll-meter{
  position:absolute;left:26px;right:26px;bottom:3px;height:3px;
  border-radius:999px;background:rgba(244,239,230,.14);overflow:hidden;pointer-events:none;
}
.scroll-meter__bar{
  display:block;height:100%;width:0;border-radius:999px;
  background:linear-gradient(90deg,var(--cyan),var(--orange) 70%,var(--red));
  transition:width 90ms linear;
}

/* ---------- 常驻竖排轮次胶囊 ---------- */
.round-rail{
  position:fixed;right:14px;top:50%;transform:translateY(-50%);z-index:55;
  display:flex;flex-direction:column;align-items:center;gap:8px;
  padding:12px 6px;
  background:var(--navy);color:var(--paper);
  border:var(--line);border-radius:999px;
  box-shadow:4px 4px 0 rgba(6,15,24,.9);
}
.round-rail__caption{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.22em;
  writing-mode:vertical-rl;color:var(--mist);text-transform:uppercase;
}
.round-rail__stack{display:flex;flex-direction:column;gap:6px}
.round-rail__btn{
  width:32px;height:32px;display:grid;place-items:center;
  background:transparent;color:var(--paper);
  border:2px solid rgba(244,239,230,.28);border-radius:999px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.02em;
  cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.round-rail__btn:hover{border-color:var(--cyan);color:var(--cyan)}
.round-rail__btn[aria-pressed="true"],
.round-rail__btn.is-active{
  background:var(--red);color:var(--white);
  border-color:var(--ink);
  box-shadow:inset 0 0 0 2px var(--orange);
}

/* ---------- 通用排版与画册容器 ---------- */
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(56px,7vw,112px)}
.section--panel{
  background-color:var(--navy);color:var(--paper);
  background-image:
    linear-gradient(rgba(244,239,230,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(244,239,230,.05) 1px,transparent 1px);
  background-size:56px 56px;
  border-block:var(--line);
}
.section--deep{background-color:var(--ink);color:var(--paper)}
.page-head{padding-block:clamp(32px,5vw,72px)}
.page-title{
  font-family:var(--font-head);font-weight:800;
  font-size:clamp(36px,6vw,88px);line-height:.95;letter-spacing:-.02em;
  text-transform:uppercase;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--red);
}
.eyebrow::before{content:"";width:22px;height:3px;background:var(--red);border-radius:2px}
.section--panel .eyebrow,.section--deep .eyebrow{color:var(--orange)}
.section--panel .eyebrow::before,.section--deep .eyebrow::before{background:var(--orange)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:0;font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:var(--mist)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--orange)}
.breadcrumb a{color:inherit;text-decoration:none;border-bottom:1px solid transparent}
.breadcrumb a:hover{color:var(--red);border-bottom-color:var(--red)}
.prose{max-width:720px;font-size:17px;line-height:1.75}
.prose p{margin-bottom:1.2em}
.prose p:last-child{margin-bottom:0}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:24px}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-6{grid-column:span 6}
.span-7{grid-column:span 7}
.span-8{grid-column:span 8}
.span-9{grid-column:span 9}
.span-12{grid-column:span 12}
.frame-card{
  position:relative;
  background:var(--paper);
  border:var(--line);border-radius:4px;
  box-shadow:var(--shadow-hard);
  transition:box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.frame-card::after{
  content:"";position:absolute;top:calc(-1 * var(--line-w));right:calc(-1 * var(--line-w));
  width:14px;height:14px;background:var(--orange);
  border-left:var(--line-w) solid var(--ink);border-bottom:var(--line-w) solid var(--ink);
}
.frame-card:hover{border-color:var(--cyan);box-shadow:12px 12px 0 var(--ink);transform:translate(-2px,-2px)}
.media-frame{
  position:relative;display:block;overflow:hidden;
  border:var(--line);
  background-color:var(--paper-2);
  background-image:repeating-linear-gradient(135deg,rgba(6,15,24,.08) 0 2px,transparent 2px 12px);
}
.media-frame img{display:block;width:100%;height:100%;object-fit:cover}
.media-frame--16x9{aspect-ratio:16/9}
.media-frame--4x3{aspect-ratio:4/3}
.media-frame--1x1{aspect-ratio:1/1}
.media-frame--wide{aspect-ratio:21/9}
.tag{
  display:inline-flex;align-items:center;
  padding:3px 9px;
  background:var(--orange);color:var(--ink);
  border-radius:2px;text-decoration:none;
  font-family:var(--font-mono);font-size:13px;font-weight:600;letter-spacing:.04em;
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
a.tag:hover{background:var(--red);color:var(--white);transform:translateX(-2px)}

/* ---------- 四段式页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:96px;
  background-color:var(--navy);
  background-image:
    linear-gradient(rgba(244,239,230,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(244,239,230,.045) 1px,transparent 1px);
  background-size:64px 64px;
  color:var(--paper);
  border-top:var(--line);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;
  background:repeating-linear-gradient(90deg,var(--red) 0 44px,var(--orange) 44px 88px,var(--cyan) 88px 132px);
}
.footer-inner{
  max-width:var(--maxw);margin-inline:auto;
  padding:clamp(48px,6vw,80px) var(--gutter) 26px;
}
.footer-top{
  display:grid;grid-template-columns:1.2fr .8fr 1.15fr;
  gap:clamp(28px,4vw,56px);
  padding-bottom:40px;
  border-bottom:1px solid rgba(244,239,230,.16);
}
.footer-brand-col{display:flex;flex-direction:column;gap:16px}
.footer-brand{
  display:inline-flex;align-items:center;gap:12px;
  text-decoration:none;color:var(--paper);
  transition:color var(--dur) var(--ease);
}
.footer-brand:hover{color:var(--orange)}
.footer-brand__plate{
  display:grid;place-items:center;
  width:38px;height:38px;flex:0 0 auto;
  background:var(--red);border:2px solid var(--ink);border-radius:8px;
  font-family:var(--font-head);font-weight:800;font-size:15px;color:var(--white);
}
.footer-brand__name{font-family:var(--font-head);font-weight:800;font-size:22px;letter-spacing:.06em}
.footer-note{font-size:15px;line-height:1.7;color:rgba(244,239,230,.72);max-width:34ch}
.footer-version{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.05em;color:var(--mist);
}
.footer-version__k{
  padding:2px 7px;background:rgba(62,193,211,.16);color:var(--cyan);
  border:1px solid rgba(62,193,211,.5);border-radius:2px;
  font-size:10px;letter-spacing:.14em;
}
.footer-version__sep{color:var(--orange)}
.footer-title{
  font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;
  color:var(--orange);margin-bottom:16px;
}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{
  display:inline-block;
  font-size:15px;color:rgba(244,239,230,.86);text-decoration:none;
  border-bottom:2px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.footer-links a:hover{color:var(--orange);border-bottom-color:var(--orange)}
.footer-contact{display:flex;flex-direction:column;gap:18px}
.footer-meta{display:flex;flex-direction:column;gap:10px}
.footer-meta li{display:grid;grid-template-columns:44px 1fr;gap:10px;align-items:baseline}
.footer-meta__k{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--mist);
}
.footer-meta__v{font-size:14px;line-height:1.6;color:rgba(244,239,230,.9);word-break:break-word}
.footer-cta{align-self:flex-start;margin-top:2px}
.footer-legal{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0;
  border-bottom:1px solid rgba(244,239,230,.16);
}
.footer-legal__links{display:flex;flex-wrap:wrap;gap:8px 24px}
.footer-legal__links a{
  font-size:14px;color:rgba(244,239,230,.78);text-decoration:none;
  border-bottom:2px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.footer-legal__links a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.footer-icp{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
  color:var(--mist);padding:4px 10px;
  border:1px solid rgba(124,139,153,.5);border-radius:2px;
}
.footer-base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding-top:20px;
}
.footer-copy,.footer-status{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.05em;color:var(--mist);
}
.footer-status{display:inline-flex;align-items:center;gap:8px}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .brand__meta{display:none}
  .header-round__label{display:none}
  .status__text{display:none}
  .nav__link{padding:6px 8px;font-size:13px}
}
@media (max-width:1100px){
  .round-rail{display:none}
}
@media (max-width:900px){
  :root{--gutter:20px}
  .site-header{padding:10px var(--gutter) 4px}
  .header-strip{
    grid-template-columns:auto 1fr auto;
    border-radius:22px;
    padding:8px 8px 8px 10px;
  }
  .site-header.is-tight .header-strip{border-radius:18px}
  .brand{grid-column:1}
  .header-round{grid-column:2;justify-self:end;margin-right:4px}
  .header-actions{grid-column:3;gap:8px}
  .nav{
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    display:none;
    padding:12px;
    background:var(--navy);
    border:var(--line);border-radius:18px;
    box-shadow:var(--shadow-hard);
    z-index:2;
  }
  .site-header[data-open] .nav{display:block}
  .site-header[data-open] .header-strip{background-color:#091724}
  .nav__list{flex-direction:column;align-items:stretch;gap:4px}
  .nav__link{
    display:flex;justify-content:space-between;
    padding:12px 14px;font-size:16px;border-radius:10px;border-color:rgba(244,239,230,.14);
  }
  .nav__link[aria-current="page"]{border-radius:10px}
  .header-current{display:none!important}
  .site-header.is-tight .nav{display:none}
  .site-header[data-open] .nav{display:block}
  .nav-toggle{display:inline-flex}
  .status{display:none}
  .btn{font-size:13px;padding:9px 14px}
  .btn--signal{box-shadow:3px 3px 0 var(--ink)}
  .scroll-meter{left:18px;right:18px}
  .grid-12{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
  .span-3,.span-4,.span-5,.span-6,.span-7,.span-8,.span-9,.span-12{grid-column:span 4}
  .footer-top{grid-template-columns:1fr 1fr}
  .footer-brand-col{grid-column:1 / -1}
  .site-footer{margin-top:64px}
}
@media (max-width:640px){
  .brand__plate{width:28px;height:28px;font-size:12px}
  .brand__name{font-size:14px;letter-spacing:.04em}
  .round-chip{font-size:11px;padding:4px 9px}
  .header-actions{gap:6px}
  .btn{padding:8px 11px;font-size:12px;letter-spacing:.03em}
  .nav-toggle{padding:7px 9px}
  .nav-toggle__label{display:none}
  .footer-top{grid-template-columns:1fr}
  .footer-legal{flex-direction:column;align-items:flex-start}
  .footer-meta li{grid-template-columns:1fr;gap:2px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;scroll-behavior:auto!important;
  }
  .frame-card:hover,.btn:hover{transform:none}
  .scroll-meter__bar{transition:none}
}