:root{
  --ink:#0E0F13;
  --acc:#FF6A3D;
  --paper:#F2EDE4;
  --dim:rgba(242,237,228,.6);
  --glass:rgba(242,237,228,.06);
  --line:rgba(242,237,228,.14);
  --wrap:1140px;
  --fd:"Barlow Condensed","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink);
  color:var(--paper);
  font:400 17px/1.75 Barlow,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
p{margin:0}

/* 视差背景层 */
.bgl{position:fixed;inset:-15vh 0;z-index:0;pointer-events:none;will-change:transform}
.bgl-a{background:radial-gradient(52vw 52vw at 84% 2%,rgba(255,106,61,.26),rgba(255,106,61,0) 64%)}
.bgl-b{background:repeating-linear-gradient(90deg,rgba(242,237,228,.05) 0 1px,rgba(0,0,0,0) 1px 110px);opacity:.55}
.bgl-c{background:radial-gradient(48vw 40vw at 4% 88%,rgba(255,106,61,.16),rgba(255,106,61,0) 62%)}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}

/* 页头 */
.hdr{
  position:sticky;top:0;z-index:30;
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:6px 18px;
  padding:8px max(14px,calc((100% - var(--wrap)) / 2 + 14px));
  background:rgba(14,15,19,.74);
  border-bottom:1px solid rgba(242,237,228,.09);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.hdr-nav{display:flex;align-items:center;gap:2px}
.hdr > .hdr-nav{justify-self:end}
.hdr-end{display:flex;align-items:center;gap:10px;justify-self:stretch}
.hl{
  display:inline-flex;align-items:center;min-height:40px;padding:0 9px;
  font-size:16px;color:rgba(242,237,228,.78);border-radius:8px;
  transition:color .2s ease,background .2s ease;white-space:nowrap;
}
.hl:hover{color:var(--paper);background:rgba(242,237,228,.08)}
.brand{
  font-family:var(--fd);font-size:26px;font-weight:700;letter-spacing:.06em;
  padding:6px 10px;white-space:nowrap;color:var(--paper);
}
.brand:hover{color:var(--acc)}
.cta{
  margin-left:auto;display:inline-flex;align-items:center;min-height:40px;padding:0 16px;
  background:var(--acc);color:#12100e;font-weight:600;font-size:16px;border-radius:8px;
  white-space:nowrap;transition:filter .2s ease;
}
.cta:hover{filter:brightness(1.1)}

/* Hero */
.hero{
  position:relative;z-index:1;overflow:hidden;
  min-height:min(45vh,400px);display:flex;align-items:flex-end;
  padding:0 0 30px;border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute;right:-.04em;bottom:-.2em;z-index:0;pointer-events:none;
  font-family:var(--fd);font-weight:700;line-height:.78;letter-spacing:-.02em;white-space:nowrap;
  font-size:clamp(90px,25vw,290px);color:rgba(242,237,228,.055);
}
.hero-in{
  position:relative;z-index:1;width:100%;
  display:flex;flex-direction:column;align-items:flex-end;text-align:right;gap:12px;
}
.hero-ic{
  width:60px;height:60px;object-fit:cover;border-radius:10px;
  border:1px solid var(--line);box-shadow:0 12px 34px rgba(0,0,0,.5);
}
.hero h1{
  margin:0;font-family:var(--fd);font-weight:700;
  font-size:clamp(30px,5.4vw,58px);line-height:1.05;letter-spacing:.01em;
}
.hero-d{max-width:52ch;color:var(--dim);font-size:16px;line-height:1.7}
.hero-go{
  display:inline-flex;align-items:center;min-height:42px;padding:0 20px;
  border:1px solid var(--acc);color:var(--acc);border-radius:10px;
  font-weight:600;letter-spacing:.04em;transition:background .2s ease,color .2s ease;
}
.hero-go:hover{background:var(--acc);color:#12100e}

/* 主区 */
.main{position:relative;z-index:1}
.board{padding:44px 0 76px}
.sheet{display:grid;grid-template-columns:232px minmax(0,1fr);gap:44px;align-items:start}

.side{
  position:sticky;top:86px;
  background:var(--glass);border:1px solid var(--line);border-radius:10px;
  padding:16px 14px 10px;
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:0 18px 40px rgba(0,0,0,.28);
}
.side h2{margin:0;font-family:var(--fd);font-weight:600;font-size:20px;letter-spacing:.16em}
hr.rule,.body hr{
  display:block;border:0;height:2px;width:64px;margin:10px 0 16px;
  background:linear-gradient(90deg,var(--acc),rgba(255,106,61,0));
  border-radius:2px;
}
.side-list{list-style:none;margin:0;padding:0}
.side-list a{
  display:flex;align-items:baseline;gap:10px;min-height:40px;padding:6px 6px;
  border-radius:8px;font-size:16px;color:rgba(242,237,228,.74);
  transition:background .2s ease,color .2s ease;
}
.side-list a:hover{background:rgba(255,106,61,.13);color:var(--paper)}
.side-list .n{font-family:var(--fd);font-size:14px;letter-spacing:.08em;color:var(--acc);min-width:1.7em}

.body{min-width:0;font-size:17px}
.body div[id]{scroll-margin-top:96px}
.body div+div{margin-top:46px;padding-top:42px;border-top:1px solid var(--line)}
.body h2,.body h3{margin:0;font-family:var(--fd);font-weight:700;line-height:1.15}
.body h2{font-size:clamp(25px,3.6vw,36px)}
.body h3{font-size:clamp(20px,2.6vw,25px);margin-top:26px}
.body p{margin:16px 0}
.body ul,.body ol{margin:16px 0;padding-left:1.3em}
.body li{margin:8px 0}
.body a{color:var(--acc);border-bottom:1px solid rgba(255,106,61,.42)}
.body a:hover{border-bottom-color:var(--acc)}
.body strong{color:#fff;font-weight:600}
.body blockquote{
  margin:22px 0;padding:14px 18px;border-left:3px solid var(--acc);
  background:var(--glass);border-radius:0 10px 10px 0;color:rgba(242,237,228,.86);
}
.body table{width:100%;border-collapse:collapse;margin:18px 0;font-size:16px}
.body th,.body td{border:1px solid var(--line);padding:9px 11px;text-align:left}
.body th{background:rgba(255,106,61,.12);font-weight:600}
.body img{border-radius:10px;margin:18px 0}

/* 页脚 */
.ftr{
  position:relative;z-index:1;border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(242,237,228,.04),rgba(14,15,19,0));
}
.ftr-grid{display:grid;grid-template-columns:1.1fr 1.5fr 1fr;gap:36px;padding-top:46px;padding-bottom:32px}
address{
  font-style:normal;display:flex;align-items:center;gap:10px;
  font-family:var(--fd);font-weight:700;font-size:22px;letter-spacing:.06em;
}
.addr-ic{width:34px;height:34px;border-radius:8px;object-fit:cover}
address a:hover{color:var(--acc)}
.ftr-nav dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:6px 12px;align-items:baseline}
.ftr-nav dt{font-family:var(--fd);font-size:14px;letter-spacing:.1em;color:var(--acc)}
.ftr-nav dd{margin:0}
.ftr-nav a{display:inline-flex;align-items:center;min-height:40px;padding-right:6px;font-size:16px;color:rgba(242,237,228,.72)}
.ftr-nav a:hover{color:var(--acc)}
.ftr-c ul{list-style:none;margin:0;padding:0}
.ftr-c a{display:inline-flex;align-items:center;min-height:40px;font-size:16px;color:rgba(242,237,228,.72)}
.ftr-c a:hover{color:var(--acc)}
.ftr-b{
  border-top:1px solid rgba(242,237,228,.08);
  padding:14px 20px;display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:16px;
  font-size:15px;color:var(--dim);
}
.totop{display:inline-flex;align-items:center;min-height:40px;padding:0 12px;border:1px solid var(--line);border-radius:8px;color:var(--paper)}
.totop:hover{border-color:var(--acc);color:var(--acc)}

/* 滚动显现 */
.js .rv{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.2,1)}
.js .rv.in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .rv{opacity:1;transform:none;transition:none}
  .bgl{will-change:auto}
}

@media (max-width:880px){
  .hdr{
    position:static;display:flex;flex-wrap:wrap;justify-content:center;
    gap:4px 6px;padding:10px 14px 12px;
  }
  .hdr-end{display:contents}
  .brand{order:1;width:100%;text-align:center;font-size:24px;padding:0 0 4px}
  .hdr .hdr-nav{order:2;flex-wrap:wrap;justify-content:center}
  .hdr-end .hdr-nav{order:3}
  .cta{order:4;margin-left:0}
  .hero{padding-top:26px;min-height:min(47vh,360px)}
  .hero-bg{top:4px;bottom:auto;font-size:clamp(80px,30vw,180px)}
  .sheet{grid-template-columns:1fr;gap:26px}
  .side{position:static;top:auto}
  .side-list{display:grid;grid-template-columns:1fr 1fr;gap:0 10px}
  .ftr-grid{grid-template-columns:1fr 1fr;gap:26px;padding-top:32px}
  .ftr-a{grid-column:1 / -1}
}
@media (max-width:520px){
  .ftr-grid{grid-template-columns:1fr}
  .hero h1{font-size:30px}
  .body h2{font-size:24px}
  .body h3{font-size:20px}
  .side-list{grid-template-columns:1fr}
  .hl{font-size:15px;padding:0 8px}
}

button[aria-expanded]{min-width:44px;min-height:44px}