:root {
  --c-red:#D9252C;
  --c-orange:#F97316;
  --c-dark:#0F172A;
  --c-light:#F1F5F9;
  --c-gray:#64748B;
  --c-green:#4D7C0F;
  --c-terra:#C2573A;
  --c-gold:#FBBF24;
  --font-head:'Noto Sans SC','Arial Black','PingFang SC','Microsoft YaHei',sans-serif;
  --font-body:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --header-w:280px;
  --max-w:1200px;
  --radius:6px;
  --shadow-md:0 10px 30px rgba(15,23,42,.14);
  --shadow-lg:0 20px 50px rgba(15,23,42,.22);
  --ease:cubic-bezier(.22,1,.36,1);
  --line:rgba(148,163,184,.18);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;background:var(--c-light)}
body{min-height:100vh;font-family:var(--font-body);font-size:16px;line-height:1.8;color:var(--c-dark);background:var(--c-light);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,h5{font-family:var(--font-head);line-height:1.2;font-weight:900;color:var(--c-dark)}
h1{font-size:clamp(34px,5vw,48px)}
h2{font-size:clamp(26px,3.6vw,32px)}
h3{font-size:24px}
p{max-width:65ch}
::selection{background:var(--c-red);color:#fff}
:focus-visible{outline:3px solid var(--c-orange);outline-offset:2px;border-radius:2px}
#main-content{display:block;min-height:70vh}
@media (min-width:1024px){body{padding-left:var(--header-w)}}

.container{width:100%;max-width:var(--max-w);margin-inline:auto;padding-inline:20px}
@media (min-width:768px){.container{padding-inline:32px}}

.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;top:10px;left:10px;z-index:2000;transform:translateY(-160%);background:linear-gradient(135deg,var(--c-red),var(--c-orange));color:#fff;padding:10px 20px;border-radius:var(--radius);font-weight:700;box-shadow:var(--shadow-md);transition:transform .2s var(--ease)}
.skip-link:focus{transform:translateY(0)}

html.js [data-reveal]{opacity:0;transform:translateY(24px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
html.js [data-reveal].is-visible{opacity:1;transform:none}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;font-family:var(--font-head);font-weight:900;font-size:15px;line-height:1.4;border-radius:var(--radius);transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease)}
.btn--primary{background:linear-gradient(135deg,var(--c-red),var(--c-orange));color:#fff;box-shadow:0 8px 22px rgba(217,37,44,.28)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(217,37,44,.38)}
.btn--ghost{border:2px solid var(--c-dark);color:var(--c-dark)}
.btn--ghost:hover{background:var(--c-dark);color:#fff}

.chip{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:13px;font-weight:700;background:var(--c-light);color:var(--c-gray);border:1px solid #E2E8F0}
.chip::before{content:"";width:8px;height:8px;border-radius:50%;background:currentColor}
.chip--live{color:var(--c-red);border-color:rgba(217,37,44,.3);background:rgba(217,37,44,.08)}
.chip--ready{color:var(--c-green);border-color:rgba(77,124,15,.3);background:rgba(77,124,15,.08)}

.section-head{display:grid;gap:10px;margin-bottom:32px}
.section-number{justify-self:start;display:inline-block;font-family:var(--font-head);font-weight:900;font-size:13px;letter-spacing:.1em;color:#fff;background:var(--c-red);padding:5px 16px 5px 12px;clip-path:polygon(0 0,100% 0,calc(100% - 8px) 100%,0 100%);line-height:1.6}
.section-title{margin-top:2px}
.section-copy{color:var(--c-gray);max-width:58ch}

.breadcrumbs{margin:20px 0 4px}
.breadcrumbs__list{display:flex;flex-wrap:wrap;gap:6px;align-items:center;font-size:14px;color:var(--c-gray)}
.breadcrumbs__item{display:flex;align-items:center;gap:6px}
.breadcrumbs__item:not(:first-child)::before{content:"/";font-weight:700;color:var(--c-gray)}
.breadcrumbs__link:hover{color:var(--c-red)}
.breadcrumbs__link[aria-current="page"]{color:var(--c-dark);font-weight:700}

.split{display:grid;gap:28px;align-items:center}
@media (min-width:768px){.split{grid-template-columns:1fr 1fr;gap:40px}}
@media (min-width:1024px){.split--lead{grid-template-columns:.85fr 1.15fr}}

.image-frame{position:relative;overflow:hidden;border-radius:var(--radius);background:linear-gradient(135deg,rgba(15,23,42,.95),rgba(15,23,42,.7) 42%,rgba(217,37,44,.42))}
.image-frame::after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(-45deg,transparent 0 14px,rgba(255,255,255,.06) 14px 16px)}
.image-frame--wide{aspect-ratio:16/9}
.image-frame--portrait{aspect-ratio:3/4}
.image-frame--square{aspect-ratio:1/1}

.site-header{position:sticky;top:0;z-index:1000;display:flex;align-items:center;justify-content:space-between;min-height:64px;padding:0 20px;background:var(--c-dark);color:#fff;box-shadow:0 2px 14px rgba(15,23,42,.3)}
.site-header__brand{display:flex;align-items:center;gap:10px;min-width:0}
.site-header__logo{display:flex;align-items:center;gap:8px;color:#fff;font-family:var(--font-head);font-weight:900}
.site-header__logo-mark{display:flex;align-items:center;justify-content:center;width:36px;height:36px;background:linear-gradient(135deg,var(--c-red),var(--c-orange));border-radius:5px;font-size:16px;letter-spacing:.04em;box-shadow:0 4px 14px rgba(217,37,44,.45)}
.site-header__logo-title{font-size:20px;letter-spacing:.12em}
.site-header__tagline{display:none}

.site-header__toggle{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;width:42px;height:42px;border-radius:var(--radius);transition:background .2s}
.site-header__toggle:hover{background:rgba(255,255,255,.08)}
.site-header__toggle-line{display:block;width:22px;height:2px;border-radius:2px;background:#fff;transition:transform .3s var(--ease),opacity .3s var(--ease)}
.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1){transform:translateY(7px) rotate(45deg)}
.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(2){opacity:0}
.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.site-nav{position:absolute;top:100%;left:0;right:0;z-index:999;background:var(--c-dark);max-height:0;overflow:hidden;visibility:hidden;transition:max-height .45s var(--ease),visibility .45s}
.site-nav[data-open]{max-height:calc(100vh - 64px);overflow-y:auto;visibility:visible;box-shadow:0 24px 48px rgba(15,23,42,.4)}
.site-nav__list{display:flex;flex-direction:column;padding:8px 20px 24px}
.site-nav__item{border-bottom:1px solid var(--line)}
.site-nav__item:last-child{border-bottom:0}
.site-nav__link{display:flex;align-items:center;gap:10px;padding:14px 6px;font-family:var(--font-head);font-weight:900;font-size:17px;letter-spacing:.04em;color:#E2E8F0;transition:color .2s,padding-left .2s}
.site-nav__link:hover{color:var(--c-orange)}
.site-nav__link[aria-current="page"]{position:relative;color:var(--c-orange)}
.site-nav__link[aria-current="page"]::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:20px;border-radius:2px;background:var(--c-orange)}

.site-header__progress{position:absolute;bottom:0;left:0;z-index:2;height:4px;width:0;background:linear-gradient(90deg,var(--c-red),var(--c-orange))}

@media (min-width:1024px){
  .site-header{
    position:fixed;top:0;left:0;bottom:0;width:var(--header-w);min-height:0;
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    padding:32px 26px 28px;overflow-y:auto;box-shadow:none;
  }
  .site-header::before{content:"";position:absolute;top:0;right:0;width:4px;height:100%;background:rgba(148,163,184,.16)}
  .site-header::after{content:"FB";position:absolute;bottom:12px;left:26px;font-family:var(--font-head);font-weight:900;font-size:72px;line-height:1;letter-spacing:-.06em;color:rgba(148,163,184,.06);pointer-events:none}
  .site-header__brand{flex-direction:column;align-items:flex-start;gap:12px;padding-bottom:24px;margin-bottom:26px;border-bottom:1px solid var(--line)}
  .site-header__logo-mark{width:48px;height:48px;font-size:20px}
  .site-header__logo-title{font-size:26px}
  .site-header__tagline{display:block;font-size:13px;color:#94A3B8;letter-spacing:.12em;line-height:1.6}
  .site-header__toggle{display:none}
  .site-nav{position:static;z-index:auto;max-height:none;overflow:visible;visibility:visible;box-shadow:none;background:transparent}
  .site-nav__list{padding:0;counter-reset:navitem}
  .site-nav__item{border-bottom:0;counter-increment:navitem}
  .site-nav__link{border-radius:6px;padding:13px 10px}
  .site-nav__link::after{content:"0" counter(navitem);display:inline-block;margin-left:auto;font-family:var(--font-body);font-size:12px;letter-spacing:.08em;color:var(--c-gray);transition:color .2s}
  .site-nav__link:hover{padding-left:14px;background:rgba(217,37,44,.1)}
  .site-nav__link:hover::after{color:var(--c-orange)}
  .site-nav__link[aria-current="page"]{padding-left:14px;background:rgba(217,37,44,.12)}
  .site-nav__link[aria-current="page"]::after{color:var(--c-gold)}
  .site-header__progress{top:0;right:0;bottom:auto;left:auto;width:4px;height:0;background:linear-gradient(180deg,var(--c-red),var(--c-orange))}
}

.site-footer{position:relative;overflow:hidden;background:var(--c-dark);color:#CBD5E1}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--c-red) 0 34%,var(--c-orange) 34% 52%,transparent 52%)}
.site-footer__inner{max-width:var(--max-w);margin-inline:auto;padding:48px 20px 28px}
.site-footer__top{display:grid;gap:32px;margin-bottom:36px}
.site-footer__brand{font-family:var(--font-head);font-weight:900;font-size:28px;color:#fff;letter-spacing:.04em}
.site-footer__slogan{margin-top:4px;font-size:14px;font-weight:700;letter-spacing:.1em;color:var(--c-orange)}
.site-footer__note{margin-top:8px;font-size:14px;color:#94A3B8}
.site-footer__heading{display:flex;align-items:center;gap:8px;font-family:var(--font-head);font-size:15px;font-weight:900;color:#fff;margin-bottom:14px}
.site-footer__heading::before{content:"";width:4px;height:16px;border-radius:2px;background:linear-gradient(180deg,var(--c-red),var(--c-orange));flex:none}
.site-footer__list{display:flex;flex-direction:column;gap:8px;font-size:14px}
.site-footer__list a{display:inline-flex;align-items:center;gap:6px;color:#CBD5E1;transition:color .2s,transform .2s var(--ease)}
.site-footer__list a::before{content:"→";color:var(--c-orange);font-size:12px;flex:none}
.site-footer__list a:hover{color:#fff;transform:translateX(3px)}
.site-footer__contact-note{margin-top:14px;font-size:13px;line-height:1.7;color:#94A3B8}
.site-footer__bottom{border-top:1px solid var(--line);padding-top:20px;display:grid;gap:12px}
.site-footer__trust{font-size:13px;line-height:1.7;color:#94A3B8}
.site-footer__meta{display:flex;flex-wrap:wrap;gap:8px 16px;justify-content:space-between;font-size:13px;color:#64748B}

@media (min-width:768px){
  .site-footer__top{grid-template-columns:1.2fr 1fr 1.3fr;gap:40px}
  .site-footer__bottom{display:flex;align-items:center;justify-content:space-between;gap:16px}
}
@media (min-width:1024px){
  .site-footer__inner{padding:64px 32px 32px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}
  html.js [data-reveal]{opacity:1;transform:none}
}