:root{
  --ink:#0B0B0F;
  --carbon:#17171E;
  --neon:#FF4A17;
  --lava:#FF8A3D;
  --sand:#E0B279;
  --gobi:#8C8577;
  --jade:#17C3A2;
  --paper:#F7F2E9;
  --paper-2:#E6DFD2;
  --rock:#4A3B31;
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular","JetBrains Mono","IBM Plex Mono",Menlo,Consolas,monospace;
  --wrap:1200px;
  --head-h:108px;
  --cut:clamp(24px,4vw,56px);
  --r-lg:24px;
  --r-md:16px;
  --r-pill:999px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--rock);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
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%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
strong{font-weight:700}
:focus-visible{outline:2px solid var(--jade);outline-offset:3px}

/* ---------- 工具类 ---------- */
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.mono{font-family:var(--font-mono);font-size:13px;letter-spacing:.04em}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.22em;
  color:var(--sand);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--neon);border-radius:2px}
.anno{
  writing-mode:vertical-rl;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.3em;
  color:var(--gobi);text-transform:uppercase;
}
.status-dot{
  display:inline-block;width:7px;height:7px;border-radius:50%;
  background:var(--jade);box-shadow:0 0 0 4px rgba(23,195,162,.18);
  vertical-align:middle;
}
.grain{
  position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:radial-gradient(rgba(224,178,121,.22) 1px,transparent 1px);
  background-size:4px 4px;
}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;left:16px;top:-72px;z-index:300;
  padding:10px 20px;border-radius:0 0 12px 12px;
  background:var(--neon);color:#fff;
  font-size:14px;font-weight:700;letter-spacing:.02em;
  transition:top .2s var(--ease);
}
.skip-link:focus-visible{top:0;outline-offset:-4px}

/* ---------- 页头 ---------- */
.site-head{
  position:fixed;inset:0 0 auto;z-index:120;
  color:var(--paper);
  background:linear-gradient(180deg,rgba(11,11,15,.94) 0%,rgba(11,11,15,.58) 58%,rgba(11,11,15,0) 100%);
  transition:background-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-head[data-scrolled]{
  background:var(--ink);
  box-shadow:0 1px 0 rgba(224,178,121,.22),0 22px 44px -30px rgba(0,0,0,.95);
}
.site-head[data-open]{background:var(--ink)}

.wayband{
  border-bottom:1px solid rgba(224,178,121,.22);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;
}
.wayband__inner{
  max-width:var(--wrap);margin:0 auto;padding:0 24px;
  height:34px;display:flex;align-items:center;gap:16px;
}
.wayband__path{display:flex;align-items:center;gap:8px;min-width:0;color:var(--sand)}
.wayband__path-label{color:var(--gobi);font-size:11px;letter-spacing:.18em}
.wayband__path-sep{color:rgba(224,178,121,.5)}
.wayband__path-here{
  color:var(--paper);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  transition:color .24s var(--ease);
}
.wayband__ticks{display:flex;align-items:center;gap:6px;margin-left:auto}
.wayband__tick{
  width:16px;height:5px;border-radius:2px;
  background:rgba(224,178,121,.22);
  transform:skewX(-30deg);
}
.wayband__tick.is-done{background:var(--neon)}
.wayband__quick{display:flex;align-items:center;gap:8px;margin-left:10px}

.masthead{
  max-width:var(--wrap);margin:0 auto;padding:0 24px;
  display:flex;align-items:center;gap:20px;
  min-height:74px;
}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand__mark{
  display:grid;place-items:center;
  width:42px;height:42px;flex:0 0 auto;
  border:2px solid var(--neon);border-radius:12px;
  color:var(--neon);font-size:26px;font-weight:900;line-height:1;
  transform:rotate(-6deg);
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.brand:hover .brand__mark{background:var(--neon);color:var(--ink)}
.brand__text{display:flex;flex-direction:column;line-height:1.1}
.brand__name{font-size:20px;font-weight:800;letter-spacing:.02em;color:var(--paper)}
.brand__line{
  margin-top:5px;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.26em;
  color:var(--sand);
}
.masthead__note{
  margin-left:auto;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  color:rgba(224,178,121,.75);white-space:nowrap;
}

.nav{margin-left:24px}
.nav__list{display:flex;align-items:center;gap:2px}
.nav__item{display:block}
.nav__link{
  position:relative;
  display:inline-flex;align-items:baseline;gap:6px;
  padding:9px 13px;border-radius:var(--r-pill);
  font-size:15px;font-weight:500;line-height:1.4;
  color:rgba(247,242,233,.82);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav__num{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.06em;
  color:var(--sand);opacity:.85;
}
.nav__link:hover{color:var(--paper);background:rgba(255,74,23,.16)}
.nav__link:focus-visible{outline-offset:-2px}
.nav__link[aria-current="page"]{
  background:var(--neon);color:var(--ink);font-weight:700;
}
.nav__link[aria-current="page"] .nav__num{color:rgba(11,11,15,.62);opacity:1}
.nav__quick{display:none}

.nav__toggle{
  display:none;align-items:center;gap:7px;margin-left:auto;
  padding:9px 15px;
  border:1px solid rgba(224,178,121,.45);border-radius:var(--r-pill);
  color:var(--paper);font-size:13px;font-weight:600;letter-spacing:.04em;
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.nav__toggle:hover{border-color:var(--sand);background:rgba(224,178,121,.12)}
.nav__toggle-bar{display:block;width:16px;height:1.5px;border-radius:2px;background:currentColor}
.nav__toggle-label{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em}

.scroll-meter{
  position:absolute;left:0;right:0;bottom:0;height:2px;
  background:rgba(224,178,121,.16);overflow:hidden;
}
.scroll-meter__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--neon),var(--lava) 55%,var(--sand));
  transition:width .12s linear;
}

/* ---------- 页脚 ---------- */
.site-foot{
  position:relative;
  background:var(--ink);color:var(--paper);
  clip-path:polygon(0 var(--cut),100% 0,100% 100%,0 100%);
  padding:calc(var(--cut) + clamp(44px,6vw,76px)) 0 0;
  overflow:hidden;
}
.site-foot__deco{
  position:absolute;right:-1.5%;top:6%;z-index:0;
  font-size:clamp(180px,34vw,420px);font-weight:900;line-height:.72;
  color:transparent;-webkit-text-stroke:1.5px rgba(255,74,23,.3);
  pointer-events:none;user-select:none;
}
.site-foot__inner{
  position:relative;z-index:1;
  max-width:var(--wrap);margin:0 auto;padding:0 24px;
  display:grid;grid-template-columns:1.15fr 1.5fr .95fr;
  gap:clamp(28px,4vw,56px);
}
.foot-brand{display:flex;flex-direction:column;align-items:flex-start;gap:16px}
.foot-brand__name{
  display:flex;align-items:center;gap:10px;
  font-size:22px;font-weight:800;letter-spacing:.02em;color:var(--paper);
}
.foot-brand__mark{
  display:grid;place-items:center;width:32px;height:32px;
  border:2px solid var(--neon);border-radius:9px;
  color:var(--neon);font-size:19px;font-weight:900;line-height:1;
  transform:rotate(-6deg);
}
.foot-brand__blurb{
  font-size:15px;line-height:1.85;color:rgba(247,242,233,.72);
  max-width:34ch;
}
.foot-brand__hours{
  display:flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:var(--gobi);
}

.foot-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.foot-col__title{
  font-family:var(--font-mono);font-size:11px;font-weight:500;letter-spacing:.22em;
  color:var(--sand);
  padding-bottom:10px;margin-bottom:14px;
  border-bottom:1px solid rgba(224,178,121,.22);
}
.foot-col__list{display:grid;gap:9px}
.foot-col__link{
  display:inline-block;
  font-size:15px;color:rgba(247,242,233,.78);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.foot-col__link:hover{color:var(--neon);transform:translateX(3px)}
.foot-col__link:focus-visible{outline-offset:2px}

.foot-contact{
  border-left:1px solid rgba(224,178,121,.2);
  padding-left:clamp(16px,2.4vw,28px);
}
.foot-contact__kicker{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;
  color:var(--jade);margin-bottom:16px;
}
.foot-contact__row{
  display:grid;grid-template-columns:44px 1fr;gap:10px;
  padding:7px 0;border-bottom:1px dashed rgba(140,133,119,.34);
  font-size:14px;
}
.foot-contact__k{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--gobi);padding-top:3px;
}
.foot-contact__v{color:rgba(247,242,233,.86);overflow-wrap:anywhere;line-height:1.6}
.foot-contact__note{
  margin-top:14px;font-size:12px;line-height:1.7;color:var(--gobi);
}

.foot-legal{
  position:relative;z-index:1;
  max-width:var(--wrap);margin:clamp(36px,5vw,60px) auto 0;
  padding:20px 24px 30px;
  border-top:1px solid rgba(224,178,121,.2);
  display:flex;flex-wrap:wrap;align-items:center;gap:14px 24px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;
  color:var(--gobi);
}
.foot-legal__icp{color:var(--sand)}
.foot-legal__copy{color:var(--gobi)}
.to-top{
  margin-left:auto;
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 17px;
  border:1px solid rgba(224,178,121,.42);border-radius:var(--r-pill);
  font-family:var(--font-sans);font-size:12px;font-weight:600;letter-spacing:.04em;
  color:var(--sand);
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.to-top:hover{background:var(--neon);border-color:var(--neon);color:#fff}

/* ---------- 按钮与胶囊 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:15px;font-weight:700;letter-spacing:.02em;line-height:1.3;
  transition:transform .18s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn--neon{background:var(--neon);color:#fff;box-shadow:0 16px 32px -20px rgba(255,74,23,.95)}
.btn--neon:hover{background:var(--lava)}
.btn--ghost{border-color:rgba(224,178,121,.5);color:var(--sand)}
.btn--ghost:hover{background:rgba(224,178,121,.14);color:var(--paper)}
.btn--ink{background:var(--ink);color:var(--paper)}
.btn--ink:hover{background:var(--rock)}

.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:12px;font-weight:600;letter-spacing:.04em;line-height:1.5;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.pill--solid{background:var(--neon);color:#fff}
.pill--solid:hover{background:var(--lava)}
.pill--ghost{border-color:rgba(224,178,121,.5);color:var(--sand)}
.pill--ghost:hover{border-color:var(--sand);color:var(--paper);background:rgba(224,178,121,.14)}
.pill--jade{background:rgba(23,195,162,.16);border-color:rgba(23,195,162,.42);color:var(--jade)}

.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 16px;border-radius:var(--r-pill);
  border:1px solid var(--paper-2);background:transparent;
  font-size:13px;font-weight:500;color:var(--rock);
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.chip:hover{border-color:var(--neon);color:var(--neon)}
.chip[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:var(--paper)}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;
  color:var(--gobi);
}
.crumbs a{transition:color .2s var(--ease)}
.crumbs a:hover{color:var(--neon)}
.crumbs__sep{color:var(--sand)}

/* ---------- 区块与标题 ---------- */
.section{padding:clamp(52px,7vw,100px) 0;position:relative}
.section--paper{background:var(--paper);color:var(--rock)}
.section--ink{background:var(--ink);color:var(--paper)}
.section--carbon{background:var(--carbon);color:var(--paper)}
.section--neon{background:var(--neon);color:#fff}

.sec-head{
  display:flex;align-items:baseline;gap:14px;
  margin-bottom:clamp(22px,3vw,34px);
}
.sec-head__num{
  font-family:var(--font-mono);font-size:13px;letter-spacing:.1em;
  color:var(--sand);flex:0 0 auto;
}
.sec-head__title{
  font-size:clamp(24px,3.2vw,36px);font-weight:800;
  letter-spacing:-.01em;line-height:1.25;
}
.sec-head__title::before{
  content:"";display:inline-block;
  width:4px;height:.86em;margin-right:12px;
  vertical-align:-.06em;border-radius:2px;
  background:var(--sand);
}
.section--ink .sec-head__title::before,
.section--carbon .sec-head__title::before{background:var(--neon)}

/* ---------- 网格 ---------- */
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2vw,28px)}

/* ---------- 卡片 ---------- */
.card{
  position:relative;
  background:#fff;border:1px solid var(--paper-2);border-radius:var(--r-lg);
  padding:clamp(20px,2.4vw,28px);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{
  transform:translateY(-3px);
  border-color:var(--sand);
  box-shadow:0 24px 44px -32px rgba(11,11,15,.65);
}
.card--ink{background:var(--carbon);border-color:rgba(224,178,121,.22);color:var(--paper)}
.card--ink:hover{border-color:rgba(255,74,23,.6)}

/* ---------- 图片容器 ---------- */
.media{
  position:relative;display:block;width:100%;
  overflow:hidden;border-radius:var(--r-lg);
  background:var(--carbon);isolation:isolate;
}
.media > img,
.media > picture > img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .5s var(--ease);
}
.media:hover > img{transform:scale(1.03)}
.media::before{
  content:"";position:absolute;inset:0;z-index:2;pointer-events:none;
  background:
    repeating-linear-gradient(0deg,rgba(247,242,233,.055) 0 1px,transparent 1px 7px),
    repeating-linear-gradient(90deg,rgba(247,242,233,.055) 0 1px,transparent 1px 7px);
}
.media::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(155deg,rgba(255,74,23,.18),rgba(11,11,15,.44) 66%,rgba(11,11,15,.12));
}
.media--wide{aspect-ratio:16/9}
.media--band{aspect-ratio:21/9}
.media--tall{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}

/* ---------- 章节目录 ---------- */
.chapter-rail{
  position:sticky;top:calc(var(--head-h) + 24px);
  display:flex;flex-direction:column;gap:2px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;
}
.chapter-rail__title{
  font-size:10px;letter-spacing:.24em;color:var(--gobi);
  padding:0 12px 10px;
}
.chapter-link{
  display:flex;align-items:center;gap:10px;
  padding:9px 12px;border-radius:10px;
  border-left:2px solid transparent;
  color:var(--gobi);line-height:1.5;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.chapter-link:hover{color:var(--ink);background:rgba(224,178,121,.16)}
.chapter-link[aria-current="true"]{
  color:var(--neon);border-left-color:var(--neon);
  background:rgba(255,74,23,.09);font-weight:600;
}
.section--ink .chapter-link,
.section--carbon .chapter-link{color:rgba(247,242,233,.6)}
.section--ink .chapter-link:hover,
.section--carbon .chapter-link:hover{color:var(--paper);background:rgba(224,178,121,.14)}
.section--ink .chapter-link[aria-current="true"],
.section--carbon .chapter-link[aria-current="true"]{color:var(--lava);border-left-color:var(--lava)}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .masthead__note{display:none}
  .nav__link{padding:9px 10px;font-size:14px}
}

@media (max-width:900px){
  :root{--head-h:96px}
  .wayband__inner{height:30px;padding:0 20px;gap:10px;font-size:11px}
  .wayband__path-label,
  .wayband__ticks,
  .wayband__quick{display:none}
  .wayband__path-here::after{content:" →";color:var(--neon)}
  .masthead{min-height:66px;padding:0 20px;gap:14px;flex-wrap:nowrap}
  .brand__mark{width:38px;height:38px;font-size:23px}
  .brand__name{font-size:18px}
  .brand__line{font-size:9px;letter-spacing:.2em}
  .nav__toggle{display:inline-flex}
  .nav{
    display:none;
    position:absolute;left:0;right:0;top:100%;
    margin:0;padding:14px 20px 22px;
    background:var(--carbon);
    border-top:1px solid rgba(224,178,121,.24);
    box-shadow:0 28px 52px -24px rgba(0,0,0,.95);
    max-height:calc(100vh - var(--head-h));
    overflow-y:auto;
  }
  .site-head[data-open] .nav{display:block}
  .nav__list{flex-direction:column;align-items:stretch;gap:2px}
  .nav__link{padding:13px 12px;border-radius:14px;font-size:17px;justify-content:flex-start;width:100%}
  .nav__num{font-size:11px}
  .nav__quick{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;padding-top:16px;border-top:1px dashed rgba(224,178,121,.28)}
  .site-foot__inner{grid-template-columns:1fr 1fr;gap:32px}
  .foot-contact{border-left:0;padding-left:0;grid-column:1 / -1;border-top:1px solid rgba(224,178,121,.2);padding-top:24px}
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .media--tall{aspect-ratio:4/5}
}

@media (max-width:640px){
  body{font-size:16px}
  .wrap{padding:0 20px}
  .masthead{padding:0 20px}
  .brand__line{display:none}
  .site-foot{clip-path:polygon(0 20px,100% 0,100% 100%,0 100%);padding-top:calc(20px + 48px)}
  .site-foot__inner{grid-template-columns:1fr;gap:28px;padding:0 20px}
  .site-foot__deco{font-size:clamp(150px,52vw,240px);right:-6%;top:2%;opacity:.7}
  .foot-cols{grid-template-columns:1fr 1fr;gap:22px}
  .foot-legal{padding:18px 20px 26px;gap:12px;flex-direction:column;align-items:flex-start}
  .to-top{margin-left:0}
  .grid-12{grid-template-columns:1fr}
  .sec-head{flex-wrap:wrap;gap:8px}
  .foot-brand__blurb{max-width:none}
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation:none !important;
    transition-property:color,background-color,border-color,opacity !important;
    transition-duration:.2s !important;
  }
  .media:hover > img{transform:none}
  .btn:hover,.card:hover{transform:none}
  .foot-col__link:hover{transform:none}
}