/* =========================================================
   半岛赛场 · 共享样式 /assets/site.css
   框架式导航 · 纵向叙事长卷 · 珠宝色分区
   ========================================================= */

:root{
  /* 色板 */
  --bp-night:#050D1A;
  --bp-navy:#0B1E33;
  --bp-indigo:#1A1B4E;
  --bp-teal:#08343A;
  --bp-wine:#5C1026;
  --bp-orange:#FF6A1A;
  --bp-cyan:#33F0CE;
  --bp-white:#F4FAFF;
  --bp-mist:#9DB2C4;
  --bp-glass:rgba(255,255,255,.08);
  --bp-glass-line:rgba(255,255,255,.14);

  /* 框架尺寸 */
  --bp-frame-top:64px;
  --bp-frame-side:0px;
  --bp-max:1200px;
  --bp-radius:14px;
  --bp-ease:cubic-bezier(.22,1,.36,1);

  /* 字体 */
  --bp-font:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --bp-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}

/* ---------------- 重置 ---------------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--bp-frame-top) + 16px)}
[hidden]{display:none !important}
body{
  margin:0;
  padding-top:var(--bp-frame-top);
  background:var(--bp-night);
  color:var(--bp-white);
  font-family:var(--bp-font);
  font-size:17px;
  line-height:1.85;
  font-weight:450;
  letter-spacing:.004em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0 0 .6em;font-weight:800;line-height:1.22;letter-spacing:-.02em}
button{font:inherit;color:inherit}
#main-content{display:block}
:focus-visible{outline:2px solid var(--bp-cyan);outline-offset:3px;border-radius:6px}

/* ---------------- 跳转链接 ---------------- */
.bp-skip{
  position:fixed;top:10px;left:10px;z-index:200;
  padding:12px 18px;border-radius:10px;
  background:var(--bp-cyan);color:#04161A;
  font-size:14px;font-weight:800;letter-spacing:.08em;
  transform:translateY(-180%);
  transition:transform .2s var(--bp-ease);
}
.bp-skip:focus{transform:translateY(0)}

/* ---------------- 框架顶栏 ---------------- */
.bp-frame{position:relative;z-index:120}
.bp-frame__top{
  position:fixed;top:0;left:0;right:0;z-index:130;
  height:var(--bp-frame-top);
  display:flex;align-items:center;gap:14px;
  padding:0 16px;
  background:rgba(5,13,26,.84);
  border-bottom:1px solid var(--bp-glass-line);
  backdrop-filter:blur(14px) saturate(150%);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
}

.bp-brand{display:flex;align-items:center;gap:12px;min-width:0;color:var(--bp-white)}
.bp-brand__mark{
  flex:none;width:38px;height:38px;display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(140deg,var(--bp-orange),#FF9A4D);
  color:#08111E;font-size:18px;font-weight:900;
  box-shadow:0 0 0 1px rgba(255,106,26,.4),0 10px 24px -12px rgba(255,106,26,.95);
}
.bp-brand__text{display:flex;flex-direction:column;line-height:1.16;min-width:0}
.bp-brand__name{font-size:18px;font-weight:900;letter-spacing:.02em;white-space:nowrap}
.bp-brand__tagline{
  font-size:11px;letter-spacing:.16em;color:var(--bp-mist);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}

.bp-frame__cta{
  margin-left:auto;flex:none;
  padding:11px 20px;border-radius:999px;
  background:var(--bp-orange);color:#08111E;
  font-size:14px;font-weight:800;letter-spacing:.06em;
  transition:transform .25s var(--bp-ease),box-shadow .25s var(--bp-ease);
}
.bp-frame__cta:hover{transform:translateY(-2px);box-shadow:0 12px 26px -14px rgba(255,106,26,.95)}

.bp-toggle{
  flex:none;margin-left:auto;
  display:inline-flex;align-items:center;gap:10px;
  padding:10px 14px;border-radius:12px;
  background:var(--bp-glass);border:1px solid var(--bp-glass-line);
  color:var(--bp-white);font-size:13px;font-weight:700;letter-spacing:.18em;
  cursor:pointer;
  transition:background .25s var(--bp-ease),border-color .25s var(--bp-ease);
}
.bp-toggle:hover{background:rgba(255,255,255,.14)}
.bp-toggle__bars{display:flex;flex-direction:column;gap:4px;width:18px}
.bp-toggle__bar{display:block;height:2px;border-radius:2px;background:var(--bp-white);transition:transform .25s var(--bp-ease),opacity .2s linear}
.bp-toggle[aria-expanded="true"] .bp-toggle__bar:nth-child(1){transform:translateY(6px) rotate(45deg)}
.bp-toggle[aria-expanded="true"] .bp-toggle__bar:nth-child(2){opacity:0}
.bp-toggle[aria-expanded="true"] .bp-toggle__bar:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.bp-toggle[aria-expanded="true"]{background:rgba(51,240,206,.14);border-color:rgba(51,240,206,.4);color:var(--bp-cyan)}

/* ---------------- 主导航（移动端抽屉） ---------------- */
.bp-nav{
  position:fixed;top:var(--bp-frame-top);right:0;z-index:125;
  width:min(84vw,340px);
  max-height:calc(100vh - var(--bp-frame-top));
  max-height:calc(100dvh - var(--bp-frame-top));
  overflow-y:auto;
  padding:22px 18px 34px;
  background:linear-gradient(180deg,rgba(11,30,51,.98),rgba(5,13,26,.99));
  border-left:1px solid var(--bp-glass-line);
  border-bottom-left-radius:20px;
  box-shadow:-30px 0 70px -34px rgba(0,0,0,.95);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  transform:translateX(104%);
  visibility:hidden;
  transition:transform .32s var(--bp-ease),visibility .32s var(--bp-ease);
}
.bp-nav[data-open]{transform:translateX(0);visibility:visible}

.bp-nav__list{list-style:none;display:flex;flex-direction:column;gap:2px;margin:0;padding:0}
.bp-nav__item{width:100%}
.bp-nav__link{
  display:flex;align-items:center;gap:14px;
  padding:14px 12px;border-radius:12px;
  border-left:2px solid transparent;
  color:var(--bp-white);font-size:16px;font-weight:700;letter-spacing:.06em;
  transition:background .25s var(--bp-ease),color .25s var(--bp-ease),border-color .25s var(--bp-ease);
}
.bp-nav__num{flex:none;font-family:var(--bp-mono);font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--bp-orange)}
.bp-nav__label{display:inline-block}
.bp-nav__link:hover{background:var(--bp-glass)}
.bp-nav__link[aria-current="page"]{
  background:var(--bp-glass);
  box-shadow:inset 0 0 0 1px var(--bp-glass-line);
  border-left-color:var(--bp-orange);
}
.bp-nav__link[aria-current="page"] .bp-nav__num{color:var(--bp-cyan)}

/* ---------------- 右侧导轨与返回顶部 ---------------- */
.bp-rail{
  position:fixed;right:14px;bottom:18px;z-index:118;
  display:flex;flex-direction:column;align-items:center;gap:12px;
}
.bp-rail__chapter,.bp-rail__track{display:none}
.bp-rail__fill{display:block;height:0;width:100%;border-radius:2px;background:linear-gradient(180deg,var(--bp-cyan),var(--bp-orange))}

.bp-totop{
  display:inline-flex;flex-direction:column;align-items:center;gap:6px;
  padding:10px;border-radius:14px;cursor:pointer;
  background:rgba(5,13,26,.88);
  border:1px solid var(--bp-glass-line);
  color:var(--bp-white);font-size:12px;font-weight:700;letter-spacing:.2em;
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:background .25s var(--bp-ease),border-color .25s var(--bp-ease),transform .25s var(--bp-ease);
}
.bp-totop:hover{background:rgba(255,106,26,.16);border-color:rgba(255,106,26,.5);transform:translateY(-2px)}
.bp-totop__arrow{font-size:16px;line-height:1;color:var(--bp-cyan)}
.bp-totop__text{writing-mode:horizontal-tb}

/* ---------------- 页脚 ---------------- */
.bp-footer{
  margin-top:48px;
  padding:56px 0 26px;
  background:linear-gradient(180deg,var(--bp-navy) 0%,#03080F 100%);
  border-top:1px solid var(--bp-glass-line);
}
.bp-footer__inner{
  width:100%;max-width:var(--bp-max);margin:0 auto;padding:0 22px;
  display:grid;grid-template-columns:1fr;gap:34px;
}
.bp-footer__brand{max-width:360px}
.bp-footer__logo{margin:0 0 8px;font-size:22px;font-weight:900;letter-spacing:.04em}
.bp-footer__tagline{margin:0 0 16px;font-size:12px;letter-spacing:.22em;color:var(--bp-cyan)}
.bp-footer__contact{margin:0 0 12px;font-size:14px;line-height:1.95;color:var(--bp-mist)}
.bp-footer__contact b{display:inline-block;min-width:5em;color:var(--bp-white);font-weight:700}
.bp-footer__note{margin:0;font-size:13px;line-height:1.8;color:var(--bp-mist)}
.bp-footer__cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:28px}
.bp-footer__col{display:flex;flex-direction:column;gap:12px}
.bp-footer__title{
  margin:0;font-size:12px;font-weight:800;letter-spacing:.28em;
  color:var(--bp-orange);
}
.bp-footer__list{list-style:none;display:flex;flex-direction:column;gap:9px;margin:0;padding:0}
.bp-footer__link{
  display:inline-block;font-size:15px;color:var(--bp-mist);
  border-bottom:1px solid transparent;
  transition:color .22s var(--bp-ease),border-color .22s var(--bp-ease);
}
.bp-footer__link:hover{color:var(--bp-white);border-bottom-color:var(--bp-orange)}
.bp-footer__bottom{
  width:100%;max-width:var(--bp-max);margin:36px auto 0;padding:18px 22px 0;
  border-top:1px solid var(--bp-glass-line);
  display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center;justify-content:space-between;
}
.bp-footer__legal{margin:0;font-family:var(--bp-mono);font-size:12px;letter-spacing:.08em;color:var(--bp-mist)}
.bp-footer__copyright{margin:0;font-size:13px;color:var(--bp-mist)}
.bp-footer__copyright [data-year]{font-family:var(--bp-mono);color:var(--bp-cyan)}

/* ---------------- 容器与色区节奏 ---------------- */
.bp-container{width:100%;max-width:var(--bp-max);margin:0 auto;padding:0 22px}
.bp-container--narrow{max-width:760px}
.bp-container--wide{max-width:1400px}
.bp-section{position:relative;padding:64px 0}
.bp-section[data-tone="navy"]{background:var(--bp-navy)}
.bp-section[data-tone="indigo"]{background:linear-gradient(165deg,#1A1B4E 0%,#0A0C2E 72%)}
.bp-section[data-tone="teal"]{background:linear-gradient(165deg,#08343A 0%,#04222A 74%)}
.bp-section[data-tone="wine"]{background:linear-gradient(165deg,#5C1026 0%,#2A0713 80%)}
.bp-section[data-tone="glass"]{background:var(--bp-glass)}
.bp-section[data-tone]::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--bp-glass-line);
}

/* ---------------- 章节色带 ---------------- */
.bp-band{
  display:flex;align-items:center;gap:16px;
  margin:0 0 26px;padding:16px 20px;
  border-radius:var(--bp-radius);
  border:1px solid var(--bp-glass-line);
  background:var(--bp-glass);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}
.bp-band[data-tone="indigo"]{background:linear-gradient(100deg,#1A1B4E,#0B1E33)}
.bp-band[data-tone="teal"]{background:linear-gradient(100deg,#08343A,#0B1E33)}
.bp-band[data-tone="wine"]{background:linear-gradient(100deg,#5C1026,#2A0713)}
.bp-band__num{font-family:var(--bp-mono);font-size:30px;font-weight:700;line-height:1;color:var(--bp-orange)}
.bp-band__title{margin:0;font-size:19px;font-weight:800;letter-spacing:-.01em}
.bp-band__note{margin:0 0 0 auto;font-size:12px;letter-spacing:.3em;color:var(--bp-mist)}

/* ---------------- 排版 ---------------- */
.bp-display{
  margin:0 0 18px;
  font-size:clamp(38px,7.2vw,86px);
  font-weight:900;line-height:1.03;letter-spacing:-.03em;
}
.bp-h2{margin:0 0 16px;font-size:clamp(26px,4.2vw,44px);font-weight:900;letter-spacing:-.02em}
.bp-h3{margin:0 0 10px;font-size:clamp(20px,2.4vw,26px);font-weight:800}
.bp-eyebrow{
  display:inline-block;margin:0 0 14px;
  font-family:var(--bp-mono);font-size:12px;font-weight:700;
  letter-spacing:.3em;color:var(--bp-cyan);
}
.bp-lede{margin:0 0 22px;max-width:44em;font-size:clamp(17px,1.7vw,20px);line-height:1.8;color:#DCE7F1}
.bp-prose{max-width:42em;color:#DDE8F2}
.bp-prose p{margin:0 0 1.1em;line-height:1.9}
.bp-prose a{color:var(--bp-cyan);text-decoration:underline;text-underline-offset:3px}
.bp-note{margin:0;font-size:14px;line-height:1.8;color:var(--bp-mist)}
.bp-annotation{margin:0;font-size:12px;letter-spacing:.3em;color:var(--bp-mist)}
.bp-num{font-family:var(--bp-mono);font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ---------------- 按钮 ---------------- */
.bp-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 26px;border-radius:999px;
  border:1px solid transparent;cursor:pointer;
  font-size:15px;font-weight:800;letter-spacing:.05em;text-decoration:none;
  transition:transform .25s var(--bp-ease),box-shadow .25s var(--bp-ease),background .25s var(--bp-ease),color .25s var(--bp-ease),border-color .25s var(--bp-ease);
}
.bp-btn:hover{transform:translateY(-2px)}
.bp-btn--orange{background:var(--bp-orange);color:#08111E;box-shadow:0 14px 32px -18px rgba(255,106,26,.95)}
.bp-btn--cyan{background:var(--bp-cyan);color:#04161A}
.bp-btn--ghost{background:var(--bp-glass);color:var(--bp-white);border-color:var(--bp-glass-line);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.bp-btn--ghost:hover{background:rgba(255,255,255,.15);border-color:rgba(51,240,206,.4)}

/* ---------------- 面包屑 ---------------- */
.bp-crumbs{max-width:var(--bp-max);margin:0 auto;padding:20px 22px 0}
.bp-crumbs__list{
  list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0;padding:0;
  font-size:12px;letter-spacing:.12em;color:var(--bp-mist);
}
.bp-crumbs__item{display:inline-flex;align-items:center;gap:8px}
.bp-crumbs__item + .bp-crumbs__item::before{content:"/";color:rgba(157,178,196,.5)}
.bp-crumbs__link{color:var(--bp-mist)}
.bp-crumbs__link:hover{color:var(--bp-cyan)}
.bp-crumbs__current{color:var(--bp-white)}

/* ---------------- 网格与卡片 ---------------- */
.bp-grid{display:grid;gap:18px;grid-template-columns:1fr}
.bp-grid--2,.bp-grid--3,.bp-grid--split{grid-template-columns:1fr}
.bp-card{
  position:relative;
  padding:22px;border-radius:var(--bp-radius);
  background:var(--bp-navy);
  border:1px solid var(--bp-glass-line);
  transition:transform .3s var(--bp-ease),border-color .3s var(--bp-ease),background .3s var(--bp-ease);
}
.bp-card:hover{transform:translateY(-3px);border-color:rgba(51,240,206,.38);background:#0E243D}
.bp-card__label{display:block;font-family:var(--bp-mono);font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--bp-cyan)}
.bp-card__title{margin:10px 0 8px;font-size:20px;font-weight:800;line-height:1.35}
.bp-card__text{margin:0;font-size:15px;line-height:1.8;color:var(--bp-mist)}
.bp-card__meta{display:block;margin-top:14px;font-family:var(--bp-mono);font-size:12px;letter-spacing:.1em;color:var(--bp-mist)}

/* ---------------- 标签与说明牌 ---------------- */
.bp-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.14em;
  background:rgba(51,240,206,.12);color:var(--bp-cyan);
  border:1px solid rgba(51,240,206,.32);
}
.bp-tag--orange{background:rgba(255,106,26,.14);color:#FFB183;border-color:rgba(255,106,26,.4)}
.bp-plate{
  display:inline-flex;align-items:center;gap:10px;
  padding:8px 14px;border-radius:12px;
  background:var(--bp-glass);border:1px solid var(--bp-glass-line);
  font-size:12px;letter-spacing:.22em;color:var(--bp-white);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}

/* ---------------- 图片容器（供页面阶段放图） ---------------- */
.bp-media{
  position:relative;display:block;width:100%;
  aspect-ratio:16 / 9;
  overflow:hidden;border-radius:var(--bp-radius);
  border:1px solid var(--bp-glass-line);
  background:
    radial-gradient(120% 100% at 14% 0%,rgba(51,240,206,.18),transparent 58%),
    radial-gradient(90% 90% at 100% 100%,rgba(255,106,26,.18),transparent 60%),
    linear-gradient(135deg,var(--bp-navy),var(--bp-indigo) 62%,#070A22);
}
.bp-media--wide{aspect-ratio:21 / 9}
.bp-media--tall{aspect-ratio:4 / 5}
.bp-media--square{aspect-ratio:1 / 1}
.bp-media__img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.bp-media__cap{
  position:absolute;left:14px;right:14px;bottom:14px;margin:0;
  padding:8px 12px;border-radius:10px;
  background:rgba(5,13,26,.74);
  border:1px solid var(--bp-glass-line);
  font-size:12px;letter-spacing:.14em;color:var(--bp-mist);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}

/* ---------------- 显现与动效 ---------------- */
@media (prefers-reduced-motion:no-preference){
  .bp-js .bp-reveal{
    opacity:0;transform:translateY(24px);
    transition:opacity .32s var(--bp-ease),transform .32s var(--bp-ease);
  }
  .bp-js .bp-reveal.is-visible{opacity:1;transform:none}
}

/* ---------------- 响应式 ---------------- */
@media (max-width:559px){
  .bp-frame__cta{display:none}
  .bp-brand__tagline{display:none}
}

@media (min-width:700px){
  .bp-grid--2{grid-template-columns:repeat(2,1fr)}
  .bp-grid--3{grid-template-columns:repeat(2,1fr)}
  .bp-footer__inner{grid-template-columns:minmax(240px,1fr) 1.7fr;gap:44px}
}

@media (min-width:900px){
  .bp-grid--split{grid-template-columns:1.35fr .9fr}
  .bp-section{padding:80px 0}
}

@media (min-width:1080px){
  :root{--bp-frame-top:76px;--bp-frame-side:88px}
  body{padding-left:var(--bp-frame-side);padding-right:var(--bp-frame-side)}
  .bp-container{padding:0 32px}
  .bp-section{padding:96px 0}
  .bp-grid--3{grid-template-columns:repeat(3,1fr)}
  .bp-grid{gap:22px}

  /* 导航转为左侧竖导轨 */
  .bp-toggle{display:none}
  .bp-frame__cta{margin-left:auto}

  .bp-nav{
    top:var(--bp-frame-top);left:0;right:auto;bottom:0;
    width:var(--bp-frame-side);
    max-height:none;
    display:flex;align-items:center;justify-content:center;
    padding:16px 0;
    border-left:0;border-right:1px solid var(--bp-glass-line);
    border-bottom-left-radius:0;
    background:linear-gradient(180deg,rgba(11,30,51,.92),rgba(5,13,26,.96));
    box-shadow:none;
    transform:none;visibility:visible;
    overflow-y:auto;overflow-x:hidden;
    scrollbar-width:none;
    transition:none;
  }
  .bp-nav::-webkit-scrollbar{display:none}
  .bp-nav__list{flex-direction:column;align-items:center;gap:10px;width:100%}
  .bp-nav__item{width:auto}
  .bp-nav__link{
    flex-direction:column;gap:8px;
    padding:10px 6px;border:1px solid transparent;border-radius:10px;
    font-size:13px;letter-spacing:.2em;color:var(--bp-mist);font-weight:700;
  }
  .bp-nav__label{writing-mode:vertical-rl;text-orientation:mixed;letter-spacing:.2em}
  .bp-nav__num{font-size:10px}
  .bp-nav__link:hover{background:var(--bp-glass);color:var(--bp-white)}
  .bp-nav__link[aria-current="page"]{
    background:var(--bp-orange);color:#08111E;
    border-color:var(--bp-orange);box-shadow:none;
  }
  .bp-nav__link[aria-current="page"] .bp-nav__num{color:#08111E}

  /* 右侧导轨 */
  .bp-rail{
    right:0;bottom:0;top:var(--bp-frame-top);
    width:var(--bp-frame-side);
    justify-content:center;gap:22px;
    padding:16px 0;
    border-left:1px solid var(--bp-glass-line);
    background:linear-gradient(180deg,rgba(11,30,51,.9),rgba(5,13,26,.94));
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
  }
  .bp-rail__chapter{
    display:block;margin:0;
    writing-mode:vertical-rl;text-orientation:mixed;
    font-family:var(--bp-mono);font-size:12px;letter-spacing:.26em;color:var(--bp-mist);
  }
  .bp-rail__track{
    display:block;position:relative;width:2px;height:150px;
    border-radius:2px;background:rgba(255,255,255,.14);overflow:hidden;
  }
  .bp-rail__fill{position:absolute;left:0;right:0;bottom:0;width:auto;transition:height .18s linear}
  .bp-totop__text{writing-mode:vertical-rl;text-orientation:mixed;letter-spacing:.2em}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .bp-js .bp-reveal{opacity:1;transform:none}
}