:root{
  --ink:#0E2A24;
  --ink-2:#164238;
  --ink-3:#1B4C41;
  --sand:#E6D5B8;
  --sand-deep:#D8C39F;
  --paper:#F8F2E6;
  --orange:#E85D2A;
  --grass:#73B84A;
  --slate:#6F8496;
  --slate-soft:#B9C6D0;
  --char:#1C211F;

  --line:rgba(14,42,36,.14);
  --line-strong:rgba(14,42,36,.28);
  --line-light:rgba(248,242,230,.18);
  --warm-grad:linear-gradient(115deg,#F2A25C 0%,#E85D2A 100%);

  --font-display:"亚新标题黑","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:"思源黑体","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --cut:14px;
  --cut-lg:22px;
  --w:1180px;
  --pad:clamp(16px,4vw,44px);
  --ease:cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:24px}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  color:var(--char);
  background-color:var(--paper);
  background-image:
    radial-gradient(circle at 8% 0%,rgba(230,213,184,.55),transparent 42%),
    radial-gradient(circle at 92% 4%,rgba(115,184,74,.10),transparent 38%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding-inline-start:1.25em}
img,svg,picture,video{max-width:100%;display:block}
a{color:inherit}
button{font:inherit;color:inherit}
table{border-collapse:collapse;width:100%}

h1,h2,h3,h4,h5,h6{
  font-family:var(--font-display);
  font-weight:800;
  letter-spacing:-.008em;
  line-height:1.22;
  color:var(--ink);
}
h1{font-size:clamp(30px,4.6vw,52px)}
h2{font-size:clamp(24px,3.2vw,36px)}
h3{font-size:clamp(18px,2.2vw,24px)}
strong{font-weight:700}
.num,.data{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

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

/* ---------- 容器与栅格 ---------- */
.container{width:100%;max-width:var(--w);margin-inline:auto;padding-inline:var(--pad)}
.container--tight{max-width:820px}
.section{padding-block:clamp(32px,5vw,64px)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:12px 24px;margin-bottom:clamp(18px,2.5vw,30px)}
.eyebrow{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--orange);font-weight:500;
}
.section-title{font-family:var(--font-display);font-weight:800;font-size:clamp(26px,3.4vw,40px);line-height:1.16;letter-spacing:-.012em;color:var(--ink)}
.grid{display:grid;gap:clamp(16px,2.2vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 24px;
  font-family:var(--font-display);font-weight:800;font-size:15px;line-height:1.2;
  text-decoration:none;border:0;cursor:pointer;
  clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,0 100%);
  transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.btn--primary{background:var(--orange);color:var(--ink)}
.btn--primary:hover{background:var(--sand);color:var(--ink)}
.btn--ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 2px var(--ink)}
.btn--ghost:hover{background:var(--ink);color:var(--paper)}
.btn--primary:focus-visible,.btn--ghost:focus-visible{outline:none;box-shadow:inset 0 0 0 3px var(--ink),inset 0 0 0 6px var(--sand)}
.btn--ghost:focus-visible{box-shadow:inset 0 0 0 3px var(--orange)}

/* ---------- 面板 / 徽标 ---------- */
.panel{
  position:relative;background:#fff;border:1px solid var(--line);
  padding:clamp(18px,2.4vw,28px);
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut-lg)),calc(100% - var(--cut-lg)) 100%,0 100%);
}
.panel--sand{background:var(--sand);border-color:var(--line-strong)}
.panel--ink{background:var(--ink-2);border-color:var(--line-light);color:rgba(248,242,230,.86)}
.panel--ink h2,.panel--ink h3{color:var(--paper)}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  background:rgba(14,42,36,.08);color:var(--ink);text-decoration:none;
}
.tag--live{background:var(--grass);color:var(--ink)}
.tag--live::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ink)}
.tag--hot{background:var(--orange);color:var(--ink)}

/* ---------- 图片容器基础规则 ---------- */
.media-frame{
  position:relative;display:block;width:100%;aspect-ratio:16/10;overflow:hidden;
  background-color:var(--sand);
  background-image:
    linear-gradient(135deg,rgba(14,42,36,.10) 0 26%,transparent 26% 100%),
    linear-gradient(315deg,rgba(232,93,42,.20) 0 18%,transparent 18% 100%);
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut-lg)),calc(100% - var(--cut-lg)) 100%,0 100%);
}
.media-frame img{width:100%;height:100%;object-fit:cover;display:block}
.media-frame > figcaption{
  position:absolute;inset:auto 0 0 0;padding:10px 14px;
  background:linear-gradient(0deg,rgba(14,42,36,.88),rgba(14,42,36,0));
  color:var(--paper);font-size:12.5px;line-height:1.5;
}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--square{aspect-ratio:1/1}

/* ---------- 面包屑 ---------- */
.breadcrumbs{padding-top:18px;font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:rgba(28,33,31,.62)}
.breadcrumbs ol{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:0;padding:0}
.breadcrumbs li+li::before{content:"/";margin-right:8px;color:var(--slate)}
.breadcrumbs a{text-decoration:none;border-bottom:1px solid rgba(28,33,31,.2)}
.breadcrumbs a:hover{color:var(--orange);border-color:var(--orange)}
.breadcrumbs [aria-current="page"]{color:var(--ink);font-weight:500;border:0}

/* ---------- 长文排版 ---------- */
.prose{max-width:68ch;font-size:16px;line-height:1.85;color:var(--char)}
.prose > * + *{margin-top:1.05em}
.prose h2{font-size:clamp(22px,2.6vw,30px);margin-top:1.8em;color:var(--ink)}
.prose h3{font-size:clamp(17px,2vw,20px);margin-top:1.5em;color:var(--ink)}
.prose ul{list-style:disc;padding-left:1.35em}
.prose ol{list-style:decimal;padding-left:1.35em}
.prose li+li{margin-top:.4em}
.prose a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--orange);text-underline-offset:3px;text-decoration-thickness:2px}
.prose a:hover{background:var(--sand)}
.prose blockquote{border-left:3px solid var(--orange);background:var(--sand);padding:14px 20px;font-size:15px}
.prose code{font-family:var(--font-mono);font-size:.92em;background:rgba(14,42,36,.07);padding:1px 5px}

/* ---------- 标签页 ---------- */
.tablist{display:flex;flex-wrap:wrap;gap:6px;border-bottom:2px solid var(--ink)}
.tab{
  appearance:none;border:0;cursor:pointer;padding:11px 18px;
  font-family:var(--font-display);font-weight:700;font-size:14px;line-height:1.2;
  background:rgba(14,42,36,.07);color:var(--ink);
  clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,0 100%);
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.tab:hover{background:rgba(14,42,36,.14)}
.tab[aria-selected="true"]{background:var(--ink);color:var(--sand)}
.tab:focus-visible{outline:none;box-shadow:inset 0 0 0 3px var(--orange)}
.tabpanel{padding-top:clamp(16px,2.4vw,26px)}
.tabpanel[hidden]{display:none}

/* ---------- 滚动显现 ---------- */
.js [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.js [data-reveal].is-revealed{opacity:1;transform:none}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;top:0;left:0;z-index:200;
  transform:translateY(-130%);
  padding:12px 20px 12px 22px;
  background:var(--orange);color:var(--ink);
  font-family:var(--font-display);font-weight:800;font-size:14px;text-decoration:none;
  clip-path:polygon(0 0,100% 0,100% 100%,12px 100%,0 calc(100% - 12px));
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translateY(0)}
.skip-link:focus-visible{outline:none;box-shadow:inset 0 0 0 3px var(--ink)}

/* ================= 头部 ================= */
.site-header{position:relative;z-index:60;background:var(--ink);color:var(--paper)}
.header-shell{
  display:grid;
  grid-template-columns:132px minmax(0,1fr);
  align-items:stretch;
  width:100%;
}

.brand-rail{
  position:relative;display:flex;flex-direction:column;justify-content:center;gap:10px;
  padding:18px 18px 24px;
  background:var(--ink-2);
  border-right:1px solid var(--line-light);
  overflow:hidden;
}
.brand-rail::before{
  content:"";position:absolute;top:0;bottom:0;left:0;width:5px;
  background:linear-gradient(180deg,var(--orange),var(--grass));
}
.brand-rail::after{
  content:"";position:absolute;right:0;bottom:0;width:22px;height:22px;
  background:var(--orange);
  clip-path:polygon(100% 0,100% 100%,0 100%);
}
.brand-mark{display:flex;flex-direction:column;gap:4px;text-decoration:none;color:var(--paper)}
.brand-mark:focus-visible{outline:none;box-shadow:inset 0 0 0 3px var(--orange);padding:2px}
.brand-name{font-family:var(--font-display);font-weight:800;font-size:19px;line-height:1.2;letter-spacing:.02em}
.brand-tag{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--grass)}
.brand-rail-note{
  font-family:var(--font-mono);font-size:9.5px;line-height:1.5;letter-spacing:.14em;
  color:rgba(248,242,230,.44);max-width:82px;
}

.header-body{display:flex;flex-direction:column;min-width:0}
.header-utility{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px 24px;
  padding:14px clamp(16px,3vw,34px);
  border-bottom:1px solid var(--line-light);
}
.utility-text{
  margin:0;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;
  color:var(--slate-soft);
}
.bookmark-hint{
  flex:1 1 250px;min-width:0;margin:0;padding-left:10px;
  border-left:2px solid var(--grass);
  font-size:12.5px;line-height:1.55;color:rgba(248,242,230,.74);
}
.header-cta{
  margin-left:auto;display:inline-flex;align-items:center;white-space:nowrap;
  padding:8px 16px 8px 18px;
  background:var(--orange);color:var(--ink);
  font-family:var(--font-display);font-weight:800;font-size:13px;text-decoration:none;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 11px),calc(100% - 11px) 100%,0 100%);
  transition:background-color .2s var(--ease);
}
.header-cta:hover{background:var(--sand)}
.header-cta:focus-visible{outline:none;box-shadow:inset 0 0 0 3px var(--ink),inset 0 0 0 6px var(--sand)}

.nav-toggle{
  display:none;align-items:center;gap:10px;
  margin:12px clamp(16px,3vw,34px) 12px auto;
  padding:10px 18px 10px 16px;
  background:var(--sand);color:var(--ink);border:0;cursor:pointer;
  font-family:var(--font-display);font-weight:800;font-size:14px;
  clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,0 100%);
}
.nav-toggle:focus-visible{outline:none;box-shadow:inset 0 0 0 3px var(--orange)}
.nav-toggle-bars{
  position:relative;display:block;width:18px;height:2px;background:var(--ink);
  transition:background-color .2s var(--ease);
}
.nav-toggle-bars::before,.nav-toggle-bars::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
  transition:transform .2s var(--ease);
}
.nav-toggle-bars::before{top:-6px}
.nav-toggle-bars::after{top:6px}
.site-header[data-open] .nav-toggle-bars{background:transparent}
.site-header[data-open] .nav-toggle-bars::before{transform:translateY(6px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bars::after{transform:translateY(-6px) rotate(-45deg)}
.nav-toggle-label{letter-spacing:.04em}

.header-nav{padding:0 clamp(10px,2vw,24px);background:var(--sand)}
.nav-list{display:flex;flex-wrap:wrap;gap:2px;list-style:none;margin:0;padding:0}
.nav-item{display:block}
.nav-link{
  position:relative;display:inline-block;
  padding:14px 20px;
  font-family:var(--font-display);font-weight:700;font-size:15px;line-height:1.2;letter-spacing:.01em;
  color:var(--ink);text-decoration:none;
  clip-path:polygon(0 0,calc(100% - 13px) 0,100% 13px,100% 100%,0 100%);
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;top:0;right:0;width:13px;height:13px;
  background:rgba(14,42,36,.18);
  clip-path:polygon(100% 0,0 0,100% 100%);
  transition:background-color .2s var(--ease);
}
.nav-link:hover{background:rgba(14,42,36,.09)}
.nav-link:hover::after{background:var(--grass)}
.nav-link:focus-visible{outline:none;box-shadow:inset 0 0 0 3px var(--orange)}
.nav-link[aria-current="page"]{background:var(--ink);color:var(--sand)}
.nav-link[aria-current="page"]::after{background:var(--orange)}

/* ================= 页脚 ================= */
.site-footer{
  position:relative;margin-top:clamp(48px,8vw,96px);
  background:var(--ink);color:rgba(248,242,230,.78);
  overflow:hidden;
}
.footer-perf{
  height:16px;
  background-image:radial-gradient(circle at 50% 50%,rgba(248,242,230,.30) 2.4px,transparent 2.9px);
  background-size:24px 16px;
  background-position:0 50%;
  background-repeat:repeat-x;
  border-bottom:1px solid var(--line-light);
}
.footer-inner{
  max-width:var(--w);margin-inline:auto;
  padding:clamp(32px,5vw,56px) var(--pad) clamp(24px,4vw,40px);
  display:grid;
  grid-template-columns:minmax(0,1.1fr) minmax(0,1.4fr) minmax(0,.95fr);
  gap:clamp(24px,4vw,52px);
}
.footer-brand{min-width:0}
.footer-brand-name{font-family:var(--font-display);font-weight:800;font-size:24px;line-height:1.2;color:var(--paper)}
.footer-brand-tag{margin-top:6px;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--grass)}
.footer-summary{margin-top:14px;max-width:34ch;font-size:14px;line-height:1.8;color:rgba(248,242,230,.72)}
.footer-cols{display:grid;grid-template-columns:1fr 1fr;gap:clamp(18px,3vw,36px)}
.footer-col{min-width:0}
.footer-col-title,.footer-contact-title{
  margin:0 0 12px;padding-bottom:8px;
  font-family:var(--font-display);font-weight:800;font-size:13px;letter-spacing:.06em;
  color:var(--sand);border-bottom:1px solid var(--line-light);
}
.footer-links{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px}
.footer-links a{
  font-size:14px;color:rgba(248,242,230,.78);text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-links a:hover{color:var(--paper);border-color:var(--orange)}
.footer-links a:focus-visible{outline:none;box-shadow:inset 0 0 0 2px var(--orange)}
.footer-contact{min-width:0}
.footer-contact-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-contact-item{font-size:13.5px;line-height:1.6}
.footer-contact-label{
  display:block;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.12em;
  color:var(--slate-soft);
}
.footer-contact-value{color:var(--paper);word-break:break-word}
.footer-contact-note{
  margin-top:14px;padding-left:10px;border-left:2px solid var(--grass);
  font-size:12px;line-height:1.7;color:rgba(248,242,230,.55);
}
.footer-bottom{
  max-width:var(--w);margin-inline:auto;
  padding:16px var(--pad) 24px;
  border-top:1px solid var(--line-light);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 24px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.04em;
  color:rgba(248,242,230,.5);
}
.footer-legal{margin:0}

/* ================= 响应式 ================= */
@media (max-width:980px){
  .footer-inner{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:900px){
  .header-shell{grid-template-columns:1fr}
  .brand-rail{
    flex-direction:row;align-items:center;justify-content:space-between;gap:14px;
    padding:14px 18px 16px;
    border-right:0;border-bottom:1px solid var(--line-light);
  }
  .brand-rail::before{top:auto;bottom:0;left:0;right:0;width:auto;height:4px;background:linear-gradient(90deg,var(--orange),var(--grass))}
  .brand-rail::after{width:18px;height:18px}
  .brand-mark{flex-direction:row;align-items:baseline;gap:10px}
  .brand-name{font-size:18px}
  .brand-rail-note{max-width:none;text-align:right;font-size:9px;letter-spacing:.1em}
  .header-utility{padding:12px 18px}
  .bookmark-hint{flex-basis:100%;order:3}
  .header-cta{margin-left:0}
  .nav-toggle{display:inline-flex}
  .header-nav{display:none;padding:0 0 8px}
  .site-header[data-open] .header-nav{display:block}
  .nav-list{flex-direction:column;gap:0}
  .nav-link{display:block;padding:14px 20px;clip-path:none;border-bottom:1px solid rgba(14,42,36,.12)}
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{background:var(--ink);color:var(--sand)}
  .grid--2,.grid--3{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  body{font-size:15.5px}
  .footer-cols{grid-template-columns:1fr;gap:22px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .breadcrumbs{font-size:11px}
}
@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;
  }
  .js [data-reveal]{opacity:1;transform:none;transition:none}
  .skip-link{transition:none}
}