/* =====================================================================
   博万官网 · 共享样式 /assets/site.css
   深海蓝基底 · 活力橙行动 · 薄荷绿状态 · 切角与斜线的坐标秩序
   ===================================================================== */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,dt{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
img,svg,video{display:block;max-width:100%;height:auto}
table{border-collapse:collapse;width:100%}
[hidden]{display:none!important}
html[data-nav-lock] body{overflow:hidden}

/* ---------- 2. 变量 ---------- */
:root{
  --ink:#0B2A4A;
  --ink-2:#163A5F;
  --orange:#FF6B35;
  --orange-deep:#E85A26;
  --orange-soft:#FFE3D6;
  --mint:#2EC4B6;
  --mint-ink:#1E8F85;
  --mist:#F6F8FA;
  --graphite:#2B2F36;
  --grey:#6B7683;
  --electric:#38BDF8;
  --violet:#6C4FD6;
  --line:rgba(11,42,74,.10);
  --line-strong:rgba(11,42,74,.18);
  --white:#FFFFFF;

  --font-display:"Source Han Serif SC","Noto Serif SC","Songti SC",Georgia,serif;
  --font-head:"Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Source Han Serif SC","Noto Serif SC","Songti SC","PingFang SC","Microsoft YaHei",serif;
  --font-ui:"Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono","SFMono-Regular",Consolas,"Source Han Sans SC",monospace;

  --fs-12:12px;--fs-14:14px;--fs-17:17px;--fs-21:21px;
  --fs-28:28px;--fs-36:36px;--fs-52:52px;--fs-72:72px;

  --gutter:clamp(16px,4vw,40px);
  --radius:14px;
  --radius-pill:999px;
  --shadow-soft:0 10px 30px rgba(11,42,74,.08);
  --shadow-float:0 18px 44px rgba(11,42,74,.14);
}

/* ---------- 3. 基础排版 ---------- */
body{
  background:var(--mist);
  color:var(--graphite);
  font-family:var(--font-body);
  font-size:var(--fs-17);
  line-height:1.9;
  letter-spacing:.005em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{font-family:var(--font-head);font-weight:900;color:var(--ink);line-height:1.28;letter-spacing:-.01em}
::selection{background:var(--orange);color:#fff}

.display-1,.display-2{font-family:var(--font-display);font-weight:900;letter-spacing:-.02em;color:var(--ink);line-height:1.14}
.display-1{font-size:clamp(36px,6vw,var(--fs-72))}
.display-2{font-size:clamp(28px,4vw,var(--fs-52))}
.section-head{font-size:clamp(24px,3.2vw,var(--fs-36))}
.lead{font-size:var(--fs-21);line-height:1.85;color:#3D4652}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:var(--fs-12);
  letter-spacing:.2em;text-transform:uppercase;color:var(--mint-ink);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--mint)}
.coord{font-family:var(--font-mono);font-size:var(--fs-12);letter-spacing:.12em;color:var(--grey)}
.prose{max-width:68ch}
.prose p{margin-block:0 .9em}
.prose > :last-child{margin-bottom:0}
.prose ul{list-style:disc;padding-left:1.4em}
.prose ol{list-style:decimal;padding-left:1.6em}
.prose li{margin-block:.35em}
.prose strong{font-family:var(--font-head);color:var(--ink)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

/* ---------- 4. 通用容器与网格 ---------- */
.container{width:min(1240px,100% - 2 * var(--gutter));margin-inline:auto}
.container--narrow{width:min(780px,100% - 2 * var(--gutter));margin-inline:auto}
.section{padding-block:clamp(48px,7vw,96px)}
.section--tight{padding-block:clamp(28px,4vw,52px)}
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--split{grid-template-columns:minmax(0,4fr) minmax(0,7fr)}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:12px 22px;border:1px solid transparent;border-radius:var(--radius-pill);
  font-family:var(--font-ui);font-size:var(--fs-14);font-weight:500;letter-spacing:.02em;
  white-space:nowrap;cursor:pointer;
  transition:background-color .22s ease,color .22s ease,border-color .22s ease,transform .22s ease;
}
.btn--primary{background:var(--orange);color:#fff;box-shadow:0 8px 20px rgba(255,107,53,.26)}
.btn--primary:hover{background:var(--orange-deep)}
.btn--primary:active{transform:translateY(1px)}
.btn--ghost{background:transparent;border-color:var(--line-strong);color:var(--ink)}
.btn--ghost:hover{background:var(--orange-soft);border-color:var(--orange);color:var(--ink)}
.btn--sm{padding:9px 18px;font-size:var(--fs-12)}

/* ---------- 6. 跳转链接 ---------- */
.skip-link{
  position:absolute;left:var(--gutter);top:-60px;z-index:300;
  padding:10px 18px;background:var(--ink);color:#fff;
  font-family:var(--font-ui);font-size:var(--fs-14);
  border-radius:0 0 10px 10px;transition:top .2s ease;
}
.skip-link:focus{top:0}

:focus-visible{outline:2px solid var(--electric);outline-offset:3px;border-radius:4px}

/* ---------- 7. 更新记录横条 ---------- */
.ticker{
  position:relative;z-index:70;
  background:var(--ink);color:rgba(255,255,255,.86);
}
.ticker__inner{
  width:min(1240px,100% - 2 * var(--gutter));margin-inline:auto;
  display:flex;align-items:center;gap:clamp(10px,2vw,22px);
  padding-block:9px;min-height:44px;
  font-family:var(--font-ui);font-size:var(--fs-12);
}
.ticker__label{
  display:inline-flex;align-items:center;gap:8px;flex:0 0 auto;
  font-family:var(--font-mono);font-size:var(--fs-12);
  letter-spacing:.14em;color:var(--mint);text-transform:uppercase;
}
.ticker__pulse{
  width:7px;height:7px;border-radius:50%;background:var(--mint);
  box-shadow:0 0 0 0 rgba(46,196,182,.7);
  animation:ticker-pulse 2.4s ease-out infinite;
}
@keyframes ticker-pulse{
  0%{box-shadow:0 0 0 0 rgba(46,196,182,.7)}
  70%{box-shadow:0 0 0 9px rgba(46,196,182,0)}
  100%{box-shadow:0 0 0 0 rgba(46,196,182,0)}
}
.ticker__track{flex:1 1 auto;min-width:0}
.ticker__item{display:none}
.ticker__item[data-active]{display:flex;align-items:baseline;flex-wrap:wrap;gap:6px 12px}
.ticker__date{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  color:#fff;letter-spacing:.06em;
}
.ticker__scope{color:rgba(255,255,255,.72)}
.ticker__scope::before{content:"／";margin-right:6px;color:var(--mint)}
.ticker__note{color:rgba(56,189,248,.92)}
.ticker__note::before{content:"·";margin-right:6px;color:rgba(255,255,255,.4)}
.ticker__ctrl{display:flex;align-items:center;gap:6px;flex:0 0 auto}
.ticker__dot{
  width:20px;height:4px;border-radius:2px;
  background:rgba(255,255,255,.28);cursor:pointer;
  transition:width .24s ease,background-color .24s ease;
}
.ticker__dot[aria-current="true"]{width:34px;background:var(--mint)}
.ticker__dot:hover{background:rgba(255,255,255,.55)}
.ticker__dot[aria-current="true"]:hover{background:var(--mint)}

/* ---------- 8. 悬浮胶囊页头 ---------- */
.site-head{
  position:sticky;top:0;z-index:60;
  background:rgba(246,248,250,.94);
  border-bottom:1px solid var(--line);
}
.site-head__inner{
  width:min(1240px,100% - 2 * var(--gutter));margin-inline:auto;
  display:flex;align-items:center;gap:clamp(12px,2vw,28px);
  padding-block:11px;
  transition:padding .28s ease;
}
html[data-scrolled="true"] .site-head__inner{padding-block:6px}
html[data-scrolled="true"] .site-head{box-shadow:0 8px 26px rgba(11,42,74,.07)}

.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink)}
.brand__mark{
  display:grid;place-items:center;width:38px;height:38px;
  background:var(--ink);color:#fff;
  font-family:var(--font-mono);font-size:var(--fs-12);letter-spacing:.06em;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 11px),calc(100% - 11px) 100%,0 100%);
}
.brand__text{display:flex;flex-direction:column;line-height:1.3}
.brand__name{font-family:var(--font-head);font-weight:900;font-size:var(--fs-17);letter-spacing:-.01em}
.brand__tag{font-family:var(--font-ui);font-size:var(--fs-12);color:var(--grey);letter-spacing:.01em}

.capsule-nav{display:flex;align-items:center;gap:12px;margin-left:auto}
.capsule-nav__list{
  display:flex;align-items:center;gap:2px;
  padding:5px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.86);
  border:1px solid var(--line);
  box-shadow:0 8px 24px rgba(11,42,74,.06);
}
.capsule-nav__link{
  display:block;padding:8px 15px;border-radius:var(--radius-pill);
  font-family:var(--font-ui);font-size:var(--fs-14);font-weight:500;color:var(--ink);
  white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,box-shadow .2s ease;
}
.capsule-nav__link:hover{background:var(--orange-soft)}
.capsule-nav__link[aria-current="page"]{
  background:var(--ink);color:#fff;
  box-shadow:inset 0 0 0 1px var(--electric);
}
.capsule-nav__cta{flex:0 0 auto}

.nav-toggle{
  display:none;align-items:center;gap:8px;
  position:relative;z-index:90;
  margin-left:auto;padding:9px 14px;
  border:1px solid var(--line-strong);border-radius:var(--radius-pill);
  background:rgba(255,255,255,.9);color:var(--ink);
  font-family:var(--font-ui);font-size:var(--fs-12);
}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:16px}
.nav-toggle__bars span{display:block;height:2px;width:100%;background:var(--ink);border-radius:2px;transition:transform .26s ease,opacity .26s ease}
.nav-toggle__text{letter-spacing:.06em}
.nav-toggle[aria-expanded="true"]{background:var(--ink);color:#fff;border-color:var(--ink)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span{background:#fff}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(3px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){transform:translateY(-3px) rotate(-45deg)}

.nav-scrim{display:none}

/* ---------- 9. 页脚 ---------- */
.site-foot{
  position:relative;overflow:hidden;
  background:var(--ink);color:rgba(255,255,255,.78);
  padding-bottom:18px;
}
.site-foot::before{
  content:"";position:absolute;right:-10%;top:-40%;
  width:60%;height:180%;
  background-image:repeating-linear-gradient(-45deg,rgba(56,189,248,.10) 0 1px,transparent 1px 14px);
  pointer-events:none;
}
.site-foot__rule{
  height:8px;
  background-image:repeating-linear-gradient(-45deg,rgba(46,196,182,.65) 0 2px,transparent 2px 11px);
}
.site-foot__inner{
  position:relative;
  display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1.7fr) minmax(0,1.2fr);
  gap:clamp(24px,4vw,56px);
  padding-block:clamp(30px,4.4vw,54px);
}
.foot__brand{display:flex;flex-direction:column;align-items:flex-start;gap:14px}
.brand--foot{color:#fff}
.brand--foot .brand__mark{background:#fff;color:var(--ink)}
.brand--foot .brand__name{color:#fff}
.brand--foot .brand__tag{color:rgba(255,255,255,.6)}
.foot__pitch{
  font-family:var(--font-body);font-size:var(--fs-14);line-height:1.85;
  color:rgba(255,255,255,.72);max-width:30ch;
}
.foot__cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.foot__title{
  font-family:var(--font-ui);font-size:var(--fs-12);font-weight:500;
  letter-spacing:.18em;text-transform:uppercase;color:var(--mint);
  margin-bottom:14px;
}
.foot__list{display:flex;flex-direction:column;gap:9px}
.foot__link{
  font-family:var(--font-ui);font-size:var(--fs-14);color:rgba(255,255,255,.82);
  border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease;
}
.foot__link:hover{color:#fff;border-bottom-color:var(--orange)}
.foot__contact{padding-left:clamp(0px,2vw,22px);border-left:1px solid rgba(255,255,255,.14)}
.foot__facts{display:grid;grid-template-columns:auto minmax(0,1fr);gap:6px 14px;font-family:var(--font-ui);font-size:var(--fs-14)}
.foot__facts dt{font-family:var(--font-mono);font-size:var(--fs-12);letter-spacing:.06em;color:rgba(255,255,255,.5)}
.foot__facts dd{color:rgba(255,255,255,.9)}
.foot__note{margin-top:12px;font-size:var(--fs-12);line-height:1.8;color:rgba(255,255,255,.55)}
.site-foot__legal{
  position:relative;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  padding-top:16px;border-top:1px solid rgba(255,255,255,.14);
  font-family:var(--font-mono);font-size:var(--fs-12);letter-spacing:.04em;
  color:rgba(255,255,255,.5);
}

/* ---------- 10. 面包屑 ---------- */
.breadcrumb{
  padding-block:16px 0;
  font-family:var(--font-mono);font-size:var(--fs-12);letter-spacing:.06em;color:var(--grey);
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center}
.breadcrumb li + li::before{content:"／";margin-inline:8px;color:rgba(107,118,131,.6)}
.breadcrumb a{color:var(--mint-ink)}
.breadcrumb a:hover{color:var(--orange-deep)}

/* ---------- 11. 内容区块与装饰 ---------- */
.theme-band{
  position:relative;overflow:hidden;
  background:var(--ink);color:#fff;
  padding-block:clamp(30px,4.6vw,58px);
}
.theme-band::after{
  content:"";position:absolute;inset:auto 0 0 0;height:5px;
  background-image:repeating-linear-gradient(-45deg,rgba(56,189,248,.55) 0 2px,transparent 2px 10px);
}
.theme-band .section-head,.theme-band .display-2{color:#fff}
.theme-band .lead{color:rgba(255,255,255,.78)}

.slant-band{
  height:14px;
  background-image:repeating-linear-gradient(-45deg,rgba(11,42,74,.14) 0 1px,transparent 1px 9px);
}

.cut-panel{
  background:#fff;
  border:1px solid var(--line);
  padding:clamp(20px,3vw,34px);
  clip-path:polygon(0 0,calc(100% - 22px) 0,100% 22px,100% 100%,0 100%);
}
.cut-panel--ink{background:var(--ink-2);color:rgba(255,255,255,.82);border-color:rgba(255,255,255,.1)}
.cut-panel--ink .section-head{color:#fff}

.card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:clamp(18px,2.4vw,28px);
  transition:box-shadow .24s ease,transform .24s ease;
}
.card:hover{box-shadow:var(--shadow-soft);transform:translateY(-2px)}

.date-stamp{
  display:inline-flex;align-items:center;gap:7px;
  padding:4px 11px;border-radius:var(--radius-pill);
  border:1px solid rgba(46,196,182,.45);background:rgba(46,196,182,.08);
  font-family:var(--font-mono);font-size:var(--fs-12);letter-spacing:.05em;color:var(--mint-ink);
}
.date-stamp::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--mint)}

.legend{display:flex;flex-wrap:wrap;gap:10px 22px}
.legend__item{display:flex;align-items:center;gap:8px;font-family:var(--font-ui);font-size:var(--fs-12);color:var(--grey)}
.legend__dot{width:10px;height:10px;border-radius:2px;background:var(--mint);flex:0 0 auto}
.legend__dot--orange{background:var(--orange)}
.legend__dot--violet{background:var(--violet)}
.legend__dot--electric{background:var(--electric)}
.legend__dot--ink{background:var(--ink)}

/* ---------- 12. 筛选条 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:8px}
.filter-chip{
  padding:7px 15px;border-radius:var(--radius-pill);
  border:1px solid var(--line-strong);background:#fff;color:var(--ink);
  font-family:var(--font-ui);font-size:var(--fs-12);font-weight:500;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.filter-chip:hover{border-color:var(--orange);color:var(--orange-deep)}
.filter-chip[aria-pressed="true"]{background:var(--orange);border-color:var(--orange);color:#fff}

/* ---------- 13. 图片容器（供页面阶段放置） ---------- */
.media{
  position:relative;overflow:hidden;border-radius:var(--radius);
  aspect-ratio:16/10;
  background-color:#E9EEF4;
  background-image:repeating-linear-gradient(-45deg,rgba(11,42,74,.06) 0 1px,transparent 1px 12px);
}
.media--wide{aspect-ratio:21/9}
.media--tall{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media--cut{clip-path:polygon(0 0,calc(100% - 24px) 0,100% 24px,100% 100%,0 100%)}
.media__img{width:100%;height:100%;object-fit:cover}
.media__caption{
  position:absolute;inset:auto 0 0 0;padding:16px 18px;
  background:linear-gradient(transparent,rgba(11,42,74,.86));
  color:#fff;font-family:var(--font-ui);font-size:var(--fs-12);line-height:1.7;
}
.media__badge{
  position:absolute;top:12px;left:12px;
  padding:4px 10px;border-radius:var(--radius-pill);
  background:rgba(11,42,74,.86);color:#fff;
  font-family:var(--font-mono);font-size:var(--fs-12);letter-spacing:.06em;
}
.media__badge--mint{background:var(--mint);color:#08283a}

/* ---------- 14. 滚动显现 ---------- */
[data-reveal]{opacity:0;transform:translateY(18px);transition:opacity .5s ease,transform .5s ease}
[data-reveal].is-visible{opacity:1;transform:none}
[data-reveal="2"]{transition-delay:.08s}
[data-reveal="3"]{transition-delay:.16s}

/* ---------- 15. 响应式 ---------- */
@media (max-width:1180px){
  .capsule-nav__link{padding:8px 11px;font-size:var(--fs-12)}
  .brand__tag{display:none}
}
@media (max-width:1024px){
  .site-foot__inner{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .foot__contact{grid-column:1 / -1;padding-left:0;border-left:0;border-top:1px solid rgba(255,255,255,.14);padding-top:22px}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .capsule-nav{
    position:fixed;top:0;right:0;bottom:0;left:auto;z-index:80;
    width:min(340px,86vw);
    display:flex;flex-direction:column;align-items:stretch;gap:22px;
    margin:0;padding:92px 24px 32px;
    background:var(--ink);overflow-y:auto;
    transform:translateX(103%);
    transition:transform .32s ease;
    box-shadow:-20px 0 50px rgba(11,42,74,.28);
  }
  .capsule-nav[data-open]{transform:translateX(0)}
  .capsule-nav__list{
    flex-direction:column;align-items:stretch;gap:4px;
    padding:0;background:transparent;border:0;box-shadow:none;
  }
  .capsule-nav__link{
    padding:14px 12px;border-radius:8px;
    border-left:2px solid transparent;
    color:rgba(255,255,255,.9);font-size:var(--fs-17);
  }
  .capsule-nav__link:hover{background:rgba(255,255,255,.09);color:#fff}
  .capsule-nav__link[aria-current="page"]{
    background:rgba(56,189,248,.16);color:#fff;
    border-left-color:var(--electric);box-shadow:none;
  }
  .capsule-nav__cta{align-self:stretch}
  .nav-scrim[data-visible]{
    display:block;position:fixed;inset:0;z-index:70;
    background:rgba(11,42,74,.5);
  }
  .grid--split,.grid--2,.grid--3{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:720px){
  :root{--fs-21:19px;--fs-28:24px;--fs-36:29px}
  .ticker__inner{flex-wrap:wrap;gap:6px 12px;padding-block:10px}
  .ticker__note{display:none}
  .ticker__track{order:3;flex-basis:100%}
  .ticker__ctrl{margin-left:auto}
  .site-foot__inner{grid-template-columns:minmax(0,1fr)}
  .foot__cols{grid-template-columns:repeat(2,minmax(0,1fr))}
  .site-foot__legal{flex-direction:column}
}
@media (max-width:420px){
  .foot__cols{grid-template-columns:minmax(0,1fr)}
  .brand__mark{width:34px;height:34px}
}

/* ---------- 16. 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;
  }
  [data-reveal]{opacity:1!important;transform:none!important}
}