/* ============================================================
   胜博 · /assets/site.css
   共享外壳：reset、变量、中文排版、页头、页脚、通用组件
   ============================================================ */

/* 1. Reset ------------------------------------------------ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd,hr{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
main{display:block}
hr{border:0}

/* 2. 变量 -------------------------------------------------- */
:root{
  --sb-deep:#0B1B2B;
  --sb-deep-2:#14314D;
  --sb-orange:#E2561A;
  --sb-orange-lt:#FF7A2F;
  --sb-cyan:#2FD6C6;
  --sb-steel:#93A2B2;
  --sb-cream:#F2EADD;
  --sb-paper:#FBF6EC;
  --sb-ink:#201A15;
  --sb-amber:#F2B03C;
  --sb-slate:#4A5A63;

  --sb-font-display:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --sb-font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --sb-font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --sb-shell:1240px;
  --sb-cut:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
  --sb-line-dark:rgba(47,214,198,.18);
  --sb-line-ink:rgba(32,26,21,.14);
  --sb-hatch:repeating-linear-gradient(12deg,rgba(147,162,178,.055) 0 1px,transparent 1px 14px);
}

/* 3. 基础排版 ---------------------------------------------- */
body{
  background:var(--sb-cream);
  color:var(--sb-ink);
  font-family:var(--sb-font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--sb-font-display);font-weight:900;letter-spacing:-.02em;line-height:1.18;color:var(--sb-ink)}
h1{font-size:clamp(34px,6vw,80px)}
h2{font-size:clamp(26px,3.4vw,56px)}
h3{font-size:clamp(20px,2.2vw,36px)}
h4{font-size:clamp(17px,1.5vw,24px)}
::selection{background:var(--sb-orange);color:var(--sb-paper)}
:focus-visible{outline:2px solid var(--sb-cyan);outline-offset:3px}
@media (prefers-reduced-motion:no-preference){
  html{scroll-behavior:smooth}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* 4. 布局骨架 ---------------------------------------------- */
.sb-shell{width:100%;max-width:var(--sb-shell);margin-inline:auto;padding-inline:clamp(16px,4vw,40px)}
.sb-container{width:100%;max-width:74ch;margin-inline:auto}
.sb-section{padding-block:clamp(48px,7vw,96px)}
.sb-section--dark{background:var(--sb-deep);color:var(--sb-paper);background-image:var(--sb-hatch)}
.sb-section--panel{background:var(--sb-deep-2);color:var(--sb-paper)}
.sb-section--dark h1,.sb-section--dark h2,.sb-section--dark h3,.sb-section--dark h4,.sb-section--panel h1,.sb-section--panel h2,.sb-section--panel h3{color:var(--sb-paper)}
.sb-section__head{max-width:62ch;margin-bottom:clamp(24px,3vw,44px)}
.sb-grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.sb-grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.sb-grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.sb-grid--split{grid-template-columns:minmax(0,7fr) minmax(0,4fr)}
.sb-rule{height:1px;background:repeating-linear-gradient(90deg,rgba(32,26,21,.28) 0 8px,transparent 8px 16px);margin-block:clamp(28px,4vw,56px)}

/* 5. 文本工具 ---------------------------------------------- */
.sb-eyebrow{
  display:inline-block;font-family:var(--sb-font-mono);font-size:12px;line-height:1.4;
  letter-spacing:.3em;color:var(--sb-orange);margin-bottom:12px;
}
.sb-section--dark .sb-eyebrow,.sb-section--panel .sb-eyebrow{color:var(--sb-cyan)}
.sb-lead{font-size:clamp(17px,1.5vw,20px);line-height:1.7;color:#3d342c;max-width:64ch}
.sb-section--dark .sb-lead,.sb-section--panel .sb-lead{color:rgba(251,246,236,.78)}
.sb-mono{font-family:var(--sb-font-mono);letter-spacing:.04em;font-size:13px;overflow-wrap:anywhere}
.sb-vnote{
  writing-mode:vertical-rl;font-family:var(--sb-font-mono);font-size:12px;letter-spacing:.3em;
  color:var(--sb-cyan);border-left:1px solid rgba(47,214,198,.4);padding-left:8px;
}
.sb-prose{max-width:72ch}
.sb-prose p+p{margin-top:1.2em}
.sb-prose h2{font-size:clamp(24px,3vw,36px);margin-top:1.8em;margin-bottom:.6em}
.sb-prose h3{font-size:clamp(19px,2vw,26px);margin-top:1.6em;margin-bottom:.5em}
.sb-prose ul,.sb-prose ol{margin-top:1em}
.sb-prose li{position:relative;padding-left:1.5em;margin-top:.55em}
.sb-prose li::before{content:"";position:absolute;left:0;top:.82em;width:9px;height:2px;background:var(--sb-orange)}
.sb-prose a{text-decoration:underline;text-decoration-color:var(--sb-cyan);text-decoration-thickness:2px;text-underline-offset:3px}
.sb-prose a:hover{color:var(--sb-orange)}
.sb-prose strong{font-weight:800}

/* 6. 按钮 -------------------------------------------------- */
.sb-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:11px 18px;background:var(--sb-orange);color:var(--sb-deep);
  font-weight:800;font-size:14px;letter-spacing:.04em;line-height:1.2;white-space:nowrap;
  border:1px solid var(--sb-orange);transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.sb-btn:hover{background:var(--sb-orange-lt);border-color:var(--sb-orange-lt)}
.sb-btn--cut{clip-path:var(--sb-cut)}
.sb-btn--cut:focus-visible{outline:none;box-shadow:inset 0 0 0 3px var(--sb-cyan)}
.sb-btn--ghost{background:transparent;color:var(--sb-paper);border-color:rgba(251,246,236,.34)}
.sb-btn--ghost:hover{background:rgba(47,214,198,.1);color:var(--sb-cyan);border-color:var(--sb-cyan)}

/* 7. 标签 / 徽章 / 面板 ------------------------------------ */
.sb-chip{
  display:inline-block;font-family:var(--sb-font-mono);font-size:11px;letter-spacing:.08em;
  padding:5px 9px;border:1px solid rgba(47,214,198,.35);background:rgba(47,214,198,.06);color:var(--sb-cyan);
}
.sb-chip--plain{border-color:var(--sb-line-ink);background:rgba(11,27,43,.04);color:#463d34}
.sb-tag{
  display:inline-block;font-family:var(--sb-font-mono);font-size:11px;font-weight:700;
  letter-spacing:.1em;padding:4px 8px;background:var(--sb-amber);color:var(--sb-ink);
}
.sb-panel{
  background:var(--sb-paper);border:1px solid var(--sb-line-ink);
  padding:clamp(18px,2.4vw,28px);clip-path:var(--sb-cut);
}
.sb-panel--dark{background:var(--sb-deep-2);border-color:var(--sb-line-dark);color:var(--sb-paper)}

/* 8. 数据 -------------------------------------------------- */
.sb-stat{border-left:3px solid var(--sb-orange);padding-left:14px}
.sb-stat__num{
  display:block;font-family:var(--sb-font-mono);font-weight:700;line-height:1;
  font-size:clamp(28px,4vw,46px);letter-spacing:-.02em;color:var(--sb-orange-lt);
}
.sb-stat__label{display:block;margin-top:8px;font-family:var(--sb-font-mono);font-size:12px;letter-spacing:.1em;color:var(--sb-steel)}
.sb-stat--on-cream{border-left-color:var(--sb-deep-2)}
.sb-stat--on-cream .sb-stat__num{color:var(--sb-orange)}
.sb-stat--on-cream .sb-stat__label{color:#6a6055}

/* 9. 图片容器 ---------------------------------------------- */
.sb-media{
  position:relative;overflow:hidden;background:var(--sb-deep-2);
  clip-path:var(--sb-cut);width:100%;
}
.sb-media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(12deg,rgba(47,214,198,.05) 0 1px,transparent 1px 16px);
}
.sb-media>img{width:100%;height:100%;object-fit:cover}
.sb-media--16x9{aspect-ratio:16/9}
.sb-media--4x3{aspect-ratio:4/3}
.sb-media--1x1{aspect-ratio:1/1}
.sb-media--wide{aspect-ratio:21/9}
.sb-media__note{
  position:absolute;left:0;bottom:0;z-index:2;margin:10px;
  font-family:var(--sb-font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--sb-cyan);background:rgba(11,27,43,.78);padding:5px 9px;
}

/* 10. 标签页 ----------------------------------------------- */
.sb-tabs{display:block}
.sb-tablist{
  display:flex;gap:2px;overflow-x:auto;border-bottom:1px solid var(--sb-line-ink);
  scrollbar-width:thin;
}
.sb-tablist::-webkit-scrollbar{height:4px}
.sb-tablist::-webkit-scrollbar-thumb{background:rgba(226,86,26,.5)}
.sb-tab{
  flex:0 0 auto;padding:12px 16px;margin-bottom:-1px;white-space:nowrap;
  font-family:var(--sb-font-mono);font-size:13px;letter-spacing:.08em;color:var(--sb-slate);
  border-bottom:3px solid transparent;transition:color .2s ease,background-color .2s ease,border-color .2s ease;
}
.sb-tab:hover{color:var(--sb-ink);background:rgba(11,27,43,.04)}
.sb-tab[aria-selected="true"]{color:var(--sb-ink);border-bottom-color:var(--sb-orange);background:rgba(226,86,26,.08)}
.sb-tablist--dark{border-bottom-color:var(--sb-line-dark)}
.sb-tablist--dark .sb-tab{color:var(--sb-steel)}
.sb-tablist--dark .sb-tab:hover{color:var(--sb-paper);background:rgba(47,214,198,.06)}
.sb-tablist--dark .sb-tab[aria-selected="true"]{color:var(--sb-paper);border-bottom-color:var(--sb-cyan)}
.sb-tabpanel{padding-top:clamp(18px,2.4vw,28px)}
.sb-tabpanel[hidden]{display:none}

/* 11. 面包屑 ----------------------------------------------- */
.sb-breadcrumb{font-family:var(--sb-font-mono);font-size:12px;letter-spacing:.08em;color:var(--sb-slate);margin-bottom:18px}
.sb-breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:.4em}
.sb-breadcrumb__list li+li::before{content:"/";margin-right:.4em;color:var(--sb-steel)}
.sb-breadcrumb a:hover{color:var(--sb-orange)}

/* 12. 动效 ------------------------------------------------- */
.sb-reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.3,1)}
.sb-reveal--1{transition-delay:.08s}
.sb-reveal--2{transition-delay:.16s}
.sb-reveal--3{transition-delay:.24s}
.sb-reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .sb-reveal{opacity:1;transform:none;transition:none}
}

/* 13. 跳至主要内容 ----------------------------------------- */
.sb-skip{
  position:fixed;left:12px;top:12px;z-index:200;
  transform:translateY(-240%);
  background:var(--sb-orange);color:var(--sb-deep);
  font-weight:800;font-size:14px;padding:11px 18px;clip-path:var(--sb-cut);
  transition:transform .2s ease;
}
.sb-skip:focus{transform:translateY(0)}

/* 14. 页头 ------------------------------------------------ */
.sb-header{
  position:sticky;top:0;z-index:100;
  background-color:var(--sb-deep);
  background-image:var(--sb-hatch);
  color:var(--sb-paper);
  border-bottom:1px solid var(--sb-line-dark);
  transition:box-shadow .3s ease;
}
.sb-header[data-scrolled]{box-shadow:0 12px 34px rgba(11,27,43,.45)}
.sb-header__bar{padding-block:16px 10px;transition:padding .3s ease}
.sb-header[data-scrolled] .sb-header__bar{padding-block:9px 6px}
.sb-masthead{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  gap:clamp(12px,2vw,24px);
}
.sb-capacity{
  justify-self:start;display:flex;align-items:center;gap:8px;
  border-left:2px solid var(--sb-orange);padding-left:10px;
  font-family:var(--sb-font-mono);font-size:11px;letter-spacing:.14em;color:var(--sb-steel);
}
.sb-capacity__num{font-size:16px;font-weight:700;letter-spacing:-.01em;color:var(--sb-cyan)}
.sb-capacity__unit{white-space:nowrap}
.sb-brand{justify-self:center;display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center}
.sb-brand__mark{
  font-family:var(--sb-font-display);font-weight:900;font-size:clamp(24px,3.2vw,36px);
  letter-spacing:.16em;line-height:1;color:var(--sb-paper);
}
.sb-brand__sub{
  font-family:var(--sb-font-mono);font-size:10px;letter-spacing:.26em;
  color:var(--sb-cyan);white-space:nowrap;
}
.sb-masthead__actions{justify-self:end;display:flex;align-items:center;gap:10px}
.sb-nav{
  border-top:1px solid rgba(251,246,236,.1);
  padding-top:4px;
}
.sb-nav__list{
  display:flex;justify-content:center;gap:clamp(4px,1.6vw,22px);
  padding-bottom:8px;overflow-x:auto;scrollbar-width:thin;
  -webkit-overflow-scrolling:touch;
}
.sb-nav__list::-webkit-scrollbar{height:4px}
.sb-nav__list::-webkit-scrollbar-thumb{background:rgba(47,214,198,.4)}
.sb-nav__link{
  display:inline-block;padding:10px 6px 8px;
  font-family:var(--sb-font-display);font-size:14px;font-weight:700;letter-spacing:.06em;
  color:rgba(251,246,236,.72);white-space:nowrap;
  border-bottom:3px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.sb-nav__link:hover{color:var(--sb-paper)}
.sb-nav__link[aria-current="page"]{color:var(--sb-paper);border-bottom-color:var(--sb-orange)}
.sb-nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:10px 12px;border:1px solid rgba(251,246,236,.34);color:var(--sb-paper);
  font-family:var(--sb-font-mono);font-size:11px;letter-spacing:.14em;
  transition:border-color .2s ease,color .2s ease;
}
.sb-nav-toggle__bars{position:relative;display:block;width:18px;height:2px;background:currentColor}
.sb-nav-toggle__bars::before,.sb-nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;
}
.sb-nav-toggle__bars::before{top:-6px}
.sb-nav-toggle__bars::after{top:6px}
.sb-nav-toggle[aria-expanded="true"]{border-color:var(--sb-cyan);color:var(--sb-cyan)}
.sb-progress{
  position:absolute;left:0;bottom:0;height:3px;width:0;
  background:linear-gradient(90deg,var(--sb-orange),var(--sb-amber),var(--sb-cyan));
  transition:width .1s linear;
}

/* 15. 页脚 ------------------------------------------------ */
.sb-footer{
  background-color:var(--sb-deep);
  background-image:var(--sb-hatch);
  color:rgba(251,246,236,.78);
  border-top:3px solid var(--sb-orange);
}
.sb-footer__grid{
  display:grid;grid-template-columns:1.5fr 1fr 1.5fr 1fr;
  gap:clamp(24px,3vw,48px);padding-block:clamp(40px,6vw,76px);
}
.sb-footer__col--brand{max-width:36ch}
.sb-footer__wordmark{
  font-family:var(--sb-font-display);font-weight:900;font-size:clamp(26px,3.4vw,40px);
  letter-spacing:.14em;line-height:1;color:var(--sb-paper);
}
.sb-footer__line{margin-top:14px;font-size:14px;line-height:1.8;color:rgba(251,246,236,.7)}
.sb-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.sb-footer__title{
  font-family:var(--sb-font-mono);font-size:12px;font-weight:700;letter-spacing:.24em;
  color:var(--sb-cyan);margin-bottom:16px;
}
.sb-footer__links li+li{margin-top:10px}
.sb-footer__links a{font-size:14px;font-weight:600;padding-bottom:2px;border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease}
.sb-footer__links a:hover{color:var(--sb-paper);border-bottom-color:var(--sb-orange)}
.sb-footer__contact li+li{margin-top:12px;padding-top:12px;border-top:1px dashed rgba(147,162,178,.28)}
.sb-footer__k{display:block;font-family:var(--sb-font-mono);font-size:11px;letter-spacing:.2em;color:var(--sb-steel);margin-bottom:5px}
.sb-footer__contact .sb-mono{color:var(--sb-paper);line-height:1.65}
.sb-footer__note{margin-top:16px;font-size:12px;line-height:1.75;color:rgba(251,246,236,.55);max-width:36ch}
.sb-footer__base{border-top:1px solid rgba(147,162,178,.2);background:rgba(0,0,0,.18)}
.sb-footer__base-inner{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px 24px;
  padding-block:16px;font-family:var(--sb-font-mono);font-size:11px;letter-spacing:.08em;color:var(--sb-steel);
}
.sb-footer__icp{color:rgba(251,246,236,.6)}

/* 16. 响应式 ---------------------------------------------- */
@media (max-width:1080px){
  .sb-footer__grid{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .sb-grid--2,.sb-grid--3,.sb-grid--split{grid-template-columns:minmax(0,1fr)}
  .sb-masthead{grid-template-columns:1fr auto;gap:10px}
  .sb-capacity{display:none}
  .sb-brand{justify-self:start;align-items:flex-start;text-align:left}
  .sb-brand__sub{white-space:normal;letter-spacing:.18em;line-height:1.6}
  .sb-masthead__actions{justify-self:end}
  .sb-nav-toggle{display:inline-flex}
  .sb-nav{display:none;padding-top:10px}
  .sb-header[data-open] .sb-nav{display:block}
  .sb-nav__list{justify-content:flex-start;padding-inline:0}
  .sb-header__bar{padding-block:12px 10px}
}
@media (max-width:720px){
  .sb-footer__grid{grid-template-columns:1fr;gap:30px}
  .sb-footer__note{max-width:none}
}
@media (max-width:560px){
  .sb-masthead__actions .sb-btn{display:none}
  .sb-brand__mark{letter-spacing:.1em}
  .sb-footer__base-inner{flex-direction:column;gap:6px}
}