/* ============================================================
   贝博体育 · 共享外壳样式 /assets/site.css
   深海蓝浮岛页头 + 沙金信任页脚 + 画册式长卷排版基础
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{max-width:100%;display:block}
button{font:inherit;color:inherit;background:none;border:0}
a{color:inherit}
[hidden]{display:none!important}

/* ---------- 2. Tokens ---------- */
:root{
  --deep:#0B2A4A;
  --deep-soft:#123C66;
  --ink:#091724;
  --paper:#F6EBDD;
  --white:#FFF9F0;
  --orange:#FF6A2A;
  --orange-soft:#FF8248;
  --cyan:#18D9C2;
  --gold:#D5A24C;
  --soft-blue:#DDF3F4;
  --coral:#E64B5B;
  --mist:#516A78;

  --shell:min(1280px,92vw);
  --header-h:74px;
  --radius-pill:999px;
  --shadow-soft:0 16px 38px -30px rgba(9,23,36,.55);
  --shadow-lift:0 26px 60px -34px rgba(9,23,36,.7);
  --ease:cubic-bezier(.22,.61,.36,1);

  --font-display:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

/* ---------- 3. Base typography ---------- */
body{
  font-family:var(--font-body);
  font-size:clamp(15px,1.05vw,17px);
  line-height:1.75;
  color:var(--ink);
  background-color:var(--paper);
  background-image:repeating-linear-gradient(0deg,rgba(9,23,36,.03) 0 1px,transparent 1px 5px);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
#main-content{display:block;padding-top:calc(var(--header-h) + 18px)}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:900;line-height:1.06;letter-spacing:-.02em;color:inherit;text-wrap:balance}
h1{font-size:clamp(34px,6vw,76px)}
h2{font-size:clamp(26px,3.4vw,44px)}
h3{font-size:clamp(18px,1.8vw,24px);line-height:1.3;font-weight:800}
p{max-width:42em}
::selection{background:var(--orange);color:var(--ink)}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.03em}

:focus-visible{outline:3px solid var(--orange);outline-offset:3px;border-radius:6px}

/* ---------- 4. Skip link ---------- */
.skip-link{
  position:fixed;left:16px;top:-72px;z-index:200;
  padding:11px 20px;border-radius:var(--radius-pill);
  background:var(--orange);color:var(--ink);
  font-family:var(--font-display);font-weight:900;font-size:14px;letter-spacing:.04em;
  text-decoration:none;
  transition:top .22s var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{top:14px}

/* ---------- 5. Layout helpers ---------- */
.container{width:var(--shell);margin-inline:auto}
.band{padding:clamp(36px,6vw,84px) 0}
.band--deep{background:var(--deep);color:var(--paper)}
.band--soft{background:var(--soft-blue);color:var(--ink)}
.band--orange{background:var(--orange);color:var(--ink)}
.grid{display:grid;gap:clamp(16px,2.4vw,32px)}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-6{grid-column:span 6}
.span-7{grid-column:span 7}
.span-8{grid-column:span 8}
.span-12{grid-column:span 12}
.offset-1{grid-column-start:2}

/* ---------- 6. Editorial atoms ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;font-weight:700;
  letter-spacing:.22em;text-transform:uppercase;color:var(--orange);
}
.eyebrow::before{content:"";width:18px;height:2px;background:currentColor;display:block}
.eyebrow--on-dark{color:var(--cyan)}
.section-num{
  display:block;
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(44px,7vw,92px);line-height:.82;font-weight:700;
  color:rgba(11,42,74,.16);
}
.section-num--on-dark{color:rgba(255,249,240,.2)}

/* ---------- 7. Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border:1px solid transparent;border-radius:var(--radius-pill);
  font-family:var(--font-display);font-weight:900;font-size:14px;letter-spacing:.04em;
  text-decoration:none;cursor:pointer;
  transition:transform .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn--primary{background:var(--orange);color:var(--ink);box-shadow:0 14px 26px -18px rgba(255,106,42,.95)}
.btn--primary:hover{background:var(--orange-soft)}
.btn--ghost{background:transparent;color:var(--paper);border-color:rgba(246,235,221,.4)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn--ink{background:var(--deep);color:var(--paper)}
.btn--ink:hover{background:var(--deep-soft)}
.btn--cyan{background:var(--cyan);color:var(--ink)}
.btn--cyan:hover{background:#3fe6d2}
.btn--sm{padding:9px 17px;font-size:12.5px}
.btn--block{width:100%}

/* ---------- 8. Tags / filters ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-pill);
  font-size:11.5px;font-weight:700;letter-spacing:.08em;
  background:rgba(11,42,74,.07);color:var(--deep);border:1px solid rgba(11,42,74,.14);
}
.tag--cyan{background:rgba(24,217,194,.18);color:#08574e;border-color:rgba(24,217,194,.55)}
.tag--gold{background:rgba(213,162,76,.18);color:#6b4a10;border-color:rgba(213,162,76,.55)}
.tag--orange{background:rgba(255,106,42,.16);color:#8a3208;border-color:rgba(255,106,42,.45)}
.filter-bar{display:flex;flex-wrap:wrap;gap:8px}
.filter-btn{
  padding:9px 17px;border-radius:var(--radius-pill);
  border:1px solid rgba(11,42,74,.18);background:transparent;color:var(--deep);
  font-family:var(--font-display);font-weight:800;font-size:13px;letter-spacing:.04em;
  cursor:pointer;transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.filter-btn:hover{transform:translateY(-2px);border-color:var(--deep)}
.filter-btn[aria-pressed="true"]{background:var(--deep);color:var(--cyan);border-color:var(--deep)}

/* ---------- 9. Panels / prose / breadcrumbs ---------- */
.panel{
  background:var(--white);border:1px solid rgba(11,42,74,.1);border-radius:22px;
  padding:clamp(18px,2.4vw,30px);box-shadow:var(--shadow-soft);
}
.panel--dark{background:var(--deep);color:var(--paper);border-color:rgba(213,162,76,.26)}
.prose{max-width:72ch}
.prose p{margin-bottom:1.05em}
.prose h2,.prose h3{margin:1.6em 0 .55em}
.prose ul{list-style:disc;padding-left:1.2em;margin-bottom:1.05em}
.prose li{margin-bottom:.4em}
.prose a{color:var(--deep);text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--orange)}
.prose a:hover{color:var(--orange)}
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.06em;color:var(--mist);
}
.breadcrumbs a{color:var(--deep);text-decoration:none}
.breadcrumbs a:hover{color:var(--orange)}
.breadcrumbs__sep{opacity:.5}
.breadcrumbs [aria-current="page"]{color:var(--orange);font-weight:700}

/* ---------- 10. Reusable image frames ---------- */
.media-frame{
  position:relative;overflow:hidden;border-radius:20px;
  aspect-ratio:16/9;
  background:linear-gradient(135deg,var(--deep),var(--deep-soft) 60%,#17507f);
  box-shadow:var(--shadow-soft);
}
.media-frame img{width:100%;height:100%;object-fit:cover;display:block}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--thin{border-radius:12px}
.media-frame__caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 18px;font-size:12px;letter-spacing:.1em;
  color:var(--paper);background:linear-gradient(180deg,transparent,rgba(9,23,36,.78));
}

/* ---------- 11. Reveal ---------- */
html[data-reveal="on"] [data-reveal]{opacity:0;transform:translateY(16px)}
[data-reveal]{transition:opacity .62s var(--ease),transform .62s var(--ease)}
[data-reveal].is-in{opacity:1;transform:none}

/* ============================================================
   12. 悬浮胶囊页头
   ============================================================ */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:120;
  padding:14px 0 0;
  transition:padding .3s var(--ease);
}
.scroll-progress{
  position:absolute;left:0;right:0;top:0;height:3px;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--orange),var(--cyan));
  transition:transform .12s linear;
}
.header-shell{
  position:relative;
  width:var(--shell);margin-inline:auto;
  display:flex;align-items:center;gap:clamp(10px,1.5vw,22px);
  padding:10px 14px 10px 18px;
  border-radius:var(--radius-pill);
  background:rgba(11,42,74,.92);
  border:1px solid rgba(213,162,76,.36);
  box-shadow:var(--shadow-lift);
  color:var(--white);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  backdrop-filter:blur(14px) saturate(1.2);
  transition:padding .3s var(--ease),background-color .3s var(--ease),border-color .3s var(--ease);
}
.header-shell::before{
  content:"";position:absolute;left:0;top:50%;translate:0 -50%;
  width:6px;height:38%;border-radius:0 6px 6px 0;
  background:linear-gradient(180deg,var(--orange),var(--cyan));
  opacity:.9;
}
.site-header[data-scrolled]{padding-top:6px}
.site-header[data-scrolled] .header-shell{
  padding-top:6px;padding-bottom:6px;
  background:rgba(9,23,36,.96);
  border-color:rgba(213,162,76,.5);
}
.site-header a{text-decoration:none}

/* 品牌浮岛 */
.brand{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto;color:var(--white)}
.brand__mark{
  display:grid;place-items:center;width:38px;height:38px;
  background:linear-gradient(140deg,var(--orange),#ff9358);
  color:var(--ink);font-family:var(--font-display);font-weight:900;font-size:18px;
  clip-path:polygon(14% 0,100% 0,86% 100%,0 100%);
  transition:transform .3s var(--ease);
}
.brand:hover .brand__mark{transform:translateX(2px)}
.brand__text{display:grid;gap:2px;line-height:1}
.brand__name{font-family:var(--font-display);font-weight:900;font-size:18px;letter-spacing:.04em;color:var(--white)}
.brand__meta{font-family:var(--font-mono);font-size:9px;letter-spacing:.22em;color:var(--gold)}
.cert-badge{
  flex:0 0 auto;
  padding:5px 11px;border-radius:var(--radius-pill);
  border:1px solid rgba(213,162,76,.55);
  color:var(--gold);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;white-space:nowrap;
}

/* 栏目胶囊 */
.nav-capsule{margin-inline:auto}
.nav-capsule__list{display:flex;align-items:center;gap:2px;flex-wrap:wrap}
.nav-capsule__link{
  display:inline-block;
  padding:9px 14px;border-radius:var(--radius-pill);
  font-size:13.5px;font-weight:700;letter-spacing:.04em;
  color:rgba(255,249,240,.82);
  transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.nav-capsule__link:hover{background:rgba(24,217,194,.16);color:var(--white);transform:translateY(-1px)}
.nav-capsule__link:focus-visible{outline-color:var(--cyan)}
.nav-capsule__link[aria-current="page"]{
  background:var(--orange);color:var(--ink);
  box-shadow:0 8px 18px -12px rgba(255,106,42,.95);
}

/* 右侧快捷入口 */
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.quick-link{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 13px;border-radius:var(--radius-pill);
  border:1px solid rgba(221,243,244,.28);
  color:var(--paper);font-size:12.5px;font-weight:700;letter-spacing:.06em;white-space:nowrap;
  transition:border-color .2s var(--ease),color .2s var(--ease),background-color .2s var(--ease);
}
.quick-link:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(24,217,194,.1)}
.quick-link__dot{
  width:6px;height:6px;border-radius:50%;background:var(--cyan);
  animation:ql-pulse 2.6s ease-in-out infinite;
}
@keyframes ql-pulse{
  0%,100%{box-shadow:0 0 0 0 rgba(24,217,194,.55)}
  50%{box-shadow:0 0 0 5px rgba(24,217,194,0)}
}

/* 汉堡 */
.nav-toggle{
  display:none;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--radius-pill);
  border:1px solid rgba(213,162,76,.45);
  color:var(--paper);cursor:pointer;
  transition:background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--orange);color:var(--orange)}
.nav-toggle__bars{display:grid;gap:4px;width:18px}
.nav-toggle__bars span{display:block;height:2px;background:currentColor;border-radius:2px;transition:transform .26s var(--ease),opacity .2s var(--ease)}
.nav-toggle__label{font-family:var(--font-display);font-weight:900;font-size:12.5px;letter-spacing:.08em}
.site-header[data-open] .nav-toggle{border-color:var(--orange);color:var(--orange)}
.site-header[data-open] .nav-toggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header[data-open] .nav-toggle__bars span:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ============================================================
   13. 页脚
   ============================================================ */
.site-footer{
  position:relative;overflow:hidden;
  background:var(--deep);color:var(--paper);
  border-top:1px solid rgba(213,162,76,.35);
}
.site-footer::before{
  content:"";position:absolute;inset:auto -10% -30% auto;
  width:min(620px,80vw);aspect-ratio:1;border-radius:50%;
  background:radial-gradient(circle,rgba(24,217,194,.16),transparent 68%);
  pointer-events:none;
}
.footer-trust{
  position:relative;
  width:var(--shell);margin-inline:auto;
  display:flex;flex-wrap:wrap;gap:10px 30px;
  padding:16px 0;
  border-bottom:1px solid rgba(213,162,76,.22);
}
.footer-trust__item{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;
  color:rgba(213,162,76,.92);
}
.footer-trust__item::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--orange);display:block}
.footer-shell{
  position:relative;
  width:var(--shell);margin-inline:auto;
  padding:clamp(34px,5vw,64px) 0 clamp(20px,3vw,30px);
  display:grid;
  grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));
  gap:clamp(24px,4vw,54px);
}
.footer-brand{display:grid;gap:14px;align-content:start;max-width:34ch}
.footer-brand__logo{
  display:inline-block;width:fit-content;
  font-family:var(--font-display);font-weight:900;font-size:clamp(24px,2.6vw,30px);
  letter-spacing:-.01em;color:var(--white);text-decoration:none;
  padding-left:14px;border-left:5px solid var(--orange);
  line-height:1.05;
}
.footer-brand__logo:hover{color:var(--cyan)}
.footer-brand__line{font-size:14px;line-height:1.8;color:rgba(246,235,221,.78);margin:0}
.footer-badge{
  display:inline-block;width:fit-content;
  padding:6px 13px;border-radius:var(--radius-pill);
  border:1px solid rgba(213,162,76,.6);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  color:var(--gold);
}
.footer-col__title{
  font-family:var(--font-mono);font-size:11.5px;font-weight:700;
  letter-spacing:.2em;text-transform:uppercase;
  color:var(--gold);margin-bottom:15px;
}
.footer-list{display:grid;gap:10px}
.footer-list a{
  display:inline-block;
  font-size:14.5px;color:rgba(246,235,221,.82);text-decoration:none;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-list a:hover{color:var(--cyan);transform:translateX(3px)}
.footer-list--legal a{text-decoration:underline;text-underline-offset:4px;text-decoration-color:rgba(213,162,76,.6)}
.footer-list--contact{gap:14px}
.footer-list--contact li{display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px;font-size:14px;color:rgba(246,235,221,.88)}
.footer-contact__label{
  flex-basis:100%;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.16em;
  text-transform:uppercase;color:rgba(213,162,76,.9);
}
.footer-contact__value{line-height:1.6;word-break:break-word}
.copy-btn{
  padding:3px 10px;border-radius:var(--radius-pill);
  border:1px solid rgba(255,106,42,.5);background:rgba(255,106,42,.14);
  color:var(--orange);font-family:var(--font-display);font-weight:900;
  font-size:11px;letter-spacing:.06em;cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.copy-btn:hover{background:var(--orange);color:var(--ink);border-color:var(--orange)}
.copy-btn[data-copied="true"]{background:var(--cyan);border-color:var(--cyan);color:var(--ink)}
.footer-note{
  margin-top:14px;font-size:12.5px;line-height:1.75;
  color:rgba(246,235,221,.58);max-width:32ch;
}
.footer-bottom{
  position:relative;
  width:var(--shell);margin-inline:auto;
  padding:18px 0 26px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px 20px;
  border-top:1px solid rgba(213,162,76,.22);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
  color:rgba(246,235,221,.6);
}
.footer-bottom__copy{margin:0}
.footer-bottom__meta{margin:0;color:rgba(213,162,76,.8)}

/* 返回顶部 */
.to-top{
  position:fixed;right:clamp(14px,3vw,32px);bottom:clamp(14px,3vw,28px);z-index:110;
  width:48px;height:48px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--deep);color:var(--paper);
  border:1px solid rgba(213,162,76,.55);
  font-size:18px;cursor:pointer;
  box-shadow:var(--shadow-lift);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s,background-color .2s var(--ease),color .2s var(--ease);
}
.to-top[data-visible]{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--orange);color:var(--ink);border-color:var(--orange)}

/* ============================================================
   14. 响应式
   ============================================================ */
@media (max-width:1180px){
  .cert-badge{display:none}
}
@media (max-width:1080px){
  :root{--header-h:66px}
  .header-shell{gap:10px;padding:8px 10px 8px 14px}
  .brand__mark{width:34px;height:34px;font-size:16px}
  .brand__name{font-size:16px}
  .nav-toggle{display:inline-flex}
  .nav-capsule{
    position:absolute;left:0;right:0;top:calc(100% + 10px);
    margin-inline:0;
    padding:10px;
    border-radius:26px;
    background:rgba(9,23,36,.97);
    border:1px solid rgba(213,162,76,.34);
    box-shadow:var(--shadow-lift);
    max-height:0;overflow:hidden;opacity:0;visibility:hidden;
    transform:translateY(-10px);
    transition:max-height .34s var(--ease),opacity .26s var(--ease),transform .3s var(--ease),visibility .3s;
  }
  .site-header[data-open] .nav-capsule{
    max-height:min(72vh,540px);overflow:auto;
    opacity:1;visibility:visible;transform:none;
  }
  .nav-capsule__list{flex-direction:column;align-items:stretch;gap:4px}
  .nav-capsule__link{
    display:flex;justify-content:space-between;align-items:center;
    padding:13px 16px;border-radius:16px;font-size:15px;
  }
  .nav-capsule__link:hover{transform:none;background:rgba(24,217,194,.14)}
  .nav-capsule__link[aria-current="page"]{box-shadow:none}
}
@media (max-width:900px){
  .footer-shell{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1;max-width:none}
  .span-4,.span-5,.span-6,.span-7,.span-8{grid-column:span 12}
  .offset-1{grid-column-start:auto}
}
@media (max-width:640px){
  .header-actions__cta{display:none}
  .quick-link{padding:7px 10px;font-size:11.5px}
  .brand__meta{display:none}
  .footer-shell{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .footer-trust{gap:8px 18px}
  .footer-trust__item{font-size:10.5px;letter-spacing:.06em}
}

/* ============================================================
   15. 动效降级
   ============================================================ */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  html[data-reveal="on"] [data-reveal]{opacity:1;transform:none}
}