:root{
  --ink:#12312d;
  --muted:#526b67;
  --line:#d8e9e4;
  --panel:#ffffff;
  --soft:#f2f7f4;
  --navy:#174b55;
  --deep:#123f46;
  --blue:#2878a4;
  --teal:#159a8c;
  --green:#2d8065;
  --orange:#d28a2f;
  --shadow:0 12px 26px rgba(20,79,70,.07);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
body{margin:0;font-family:Segoe UI,Arial,sans-serif;color:var(--ink);background:var(--soft)}
a{color:inherit;text-decoration:none}
.site-header{
  position:sticky;top:0;z-index:30;
  display:flex;justify-content:space-between;align-items:center;gap:22px;
  padding:17px 6vw;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px)
}
.brand{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:900;color:var(--navy)}
.brand::before{
  content:"B";display:grid;place-items:center;width:36px;height:36px;border-radius:8px;
  background:var(--green);color:white;font-size:18px;font-weight:900
}
nav{display:flex;align-items:center;gap:17px;color:var(--muted);font-weight:800;font-size:14px;white-space:nowrap}
.hero{
  position:relative;min-height:620px;display:flex;align-items:center;overflow:hidden;
  padding:74px 6vw 64px;color:white;background:#153a34
}
.compact-hero{min-height:620px}
.hero::before{
  content:"";position:absolute;inset:0;z-index:1;background:rgba(7,31,27,.58);pointer-events:none
}
.hero-bg{
  position:absolute;inset:0;
  background:#153a34 url("assets/bdo-hero-2026.png") center/cover no-repeat
}
.hero-content{position:relative;z-index:2;width:100%;min-width:0;max-width:760px}
.eyebrow{margin:0 0 12px;text-transform:uppercase;letter-spacing:.08em;font-size:12px;font-weight:900;color:var(--green)}
h1,h2,h3,p{letter-spacing:0}
h1{margin:0;font-size:58px;line-height:1.04;max-width:760px}
.hero .eyebrow{color:#a9e0c9}
.lead{margin:24px 0 0;max-width:700px;color:#f1f7f4;font-size:21px;line-height:1.48}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:32px 0 24px}
.button{display:inline-flex;justify-content:center;align-items:center;min-height:48px;padding:14px 20px;border-radius:8px;font-weight:900}
.button.primary{background:var(--green);color:white}
.button.secondary{border:1px solid rgba(255,255,255,.7);color:white;background:rgba(12,48,42,.66)}
.button.full{width:100%;background:var(--blue);color:white}
.button:hover,.quick-map a:hover,.bdo-number-grid a:hover,.intro-list a:hover,.knowledge-stack a:hover,.topic-grid a:hover,.project-card:hover,.feature-grid a:hover,.process-grid a:hover,.blog-teaser-grid a:hover,.detail-grid article a:hover,.official-links a:hover{transform:translateY(-1px)}
.hero-points{display:flex;flex-wrap:wrap;gap:10px}
.hero-points span{padding:9px 11px;background:rgba(9,43,37,.72);border:1px solid rgba(255,255,255,.32);border-radius:8px;font-size:13px;font-weight:800;color:white}
.essence{padding:42px 6vw;background:#f6faf8;border-bottom:1px solid var(--line)}
.essence-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.essence-grid > a{display:grid;gap:8px;min-height:158px;padding:20px;background:white;border:1px solid var(--line);border-top:3px solid #72b9aa;border-radius:8px;box-shadow:var(--shadow)}
.essence-grid b{font-size:20px;color:var(--navy)}
.essence-grid p{margin:0;color:var(--muted);line-height:1.5}
.quick-map{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;
  padding:18px 6vw;background:white;border-bottom:1px solid var(--line)
}
.quick-map a{
  display:grid;gap:6px;min-height:92px;padding:16px;background:white;
  border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow)
}
.quick-map b{font-size:16px;color:var(--navy);line-height:1.25}
.quick-map span{color:var(--muted);line-height:1.4;font-size:14px}
.bdo-number{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(360px,.9fr);gap:22px;
  padding:34px 6vw;background:#eaf4f0;border-bottom:1px solid #d3e5de
}
.bdo-number h2{margin:0;font-size:30px;line-height:1.16}
.bdo-number p{color:var(--muted);line-height:1.56}
.bdo-number-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.bdo-number-grid a{
  display:grid;gap:8px;padding:18px;background:white;border:1px solid #d5ecea;
  border-radius:8px;box-shadow:var(--shadow)
}
.bdo-number-grid b{font-size:18px;color:var(--navy)}
.bdo-number-grid span{color:var(--muted);line-height:1.45}
.intro-band{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(360px,.55fr);gap:34px;
  padding:50px 6vw;background:#f8fbf9;border-bottom:1px solid var(--line)
}
.intro-band h2,.section h2,.purchase h2{margin:0;font-size:35px;line-height:1.16}
.intro-band p,.section-head p,.knowledge-main p,.knowledge-stack span,.topic-grid p,.project-card p,.purchase p,.faq p{color:var(--muted);line-height:1.58}
.intro-list{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.intro-list a{display:flex;align-items:center;min-height:70px;padding:14px;background:#eef8f7;border:1px solid #d5ecea;border-radius:8px;font-weight:900;color:var(--navy)}
.section{padding:58px 6vw}
.feature-strip,.compact-faq{padding:42px 6vw}
.section-head{max-width:840px;margin-bottom:30px}
.knowledge{background:#edf5f1}
.knowledge-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(420px,.75fr);gap:18px}
.knowledge-main,.project-card,.topic-grid article,.feature-grid article{
  background:white;border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow)
}
.knowledge-main{padding:28px}
.knowledge-main h3,.knowledge-stack b,.topic-grid h3,.project-card h3,.feature-grid h3,.official-links h3{margin:0 0 12px;font-size:20px}
.knowledge-stack{display:grid;gap:12px}
.knowledge-stack a{padding:20px;background:white;border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow)}
.knowledge-stack b,.knowledge-stack span{display:block}
.knowledge-stack span{margin-top:7px}
.topic-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:18px}
.topic-grid a{padding:22px;background:white;border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow)}
.project{background:white;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.project-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.project-card{padding:22px}
.project-card.strong{background:#effaf8;border-color:#cfe9e5;color:var(--ink)}
.project-card.strong p{color:var(--muted)}
.feature-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}
.feature-grid a{padding:21px;background:white;border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow)}
.feature-grid p{margin:0;color:var(--muted);line-height:1.5}
.feature-grid.compact a{min-height:150px}
.ppwr-public{
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(420px,.95fr);gap:26px;align-items:start;
  padding:54px 6vw;background:#f0f8f7;border-top:1px solid #d5ecea;border-bottom:1px solid #d5ecea
}
.ppwr-copy h2{margin:0;font-size:35px;line-height:1.16;color:var(--navy)}
.ppwr-copy>p:not(.eyebrow){color:var(--muted);line-height:1.62}
.ppwr-note{padding:14px 16px;background:white;border-left:4px solid var(--teal);border-radius:0 8px 8px 0}
.ppwr-actions{display:flex;align-items:center;flex-wrap:wrap;gap:16px;margin-top:22px}
.button.ppwr-primary{background:var(--navy);color:white}
.ppwr-source{color:var(--blue);font-weight:900}
.ppwr-checklist{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.ppwr-checklist article{min-height:145px;padding:19px;background:white;border:1px solid #d5ecea;border-radius:8px;box-shadow:var(--shadow)}
.ppwr-checklist b,.ppwr-checklist span{display:block}
.ppwr-checklist b{margin-bottom:8px;color:var(--navy);font-size:17px}
.ppwr-checklist span{color:var(--muted);line-height:1.5}
.details{background:white;border-top:1px solid var(--line)}
.info-library{padding:20px;background:#f6fbf8}
.info-library summary{font-size:18px;color:var(--navy)}
.info-library .detail-grid{margin-top:18px}
.detail-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.detail-grid article{padding:21px;background:white;border:1px solid var(--line);border-radius:8px}
.detail-grid h3{margin:0 0 10px;font-size:18px}
.detail-grid p{margin:0;color:var(--muted);line-height:1.5}
.detail-grid article a{display:inline-flex;margin-top:14px;color:var(--blue);font-weight:900}
.process{background:#eef8f7}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.process-grid a{min-height:128px;padding:20px;background:white;border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow)}
.process-grid b{display:flex;align-items:center;justify-content:center;width:34px;height:34px;margin-bottom:15px;border-radius:50%;background:var(--teal);color:white}
.process-grid span{font-weight:900;line-height:1.4}
.blog-teaser{background:white;border-top:1px solid var(--line)}
.blog-teaser-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.blog-teaser-grid a{padding:22px;background:#f6fbf8;border:1px solid var(--line);border-radius:8px}
.blog-teaser-grid b,.blog-teaser-grid span{display:block}
.blog-teaser-grid b{font-size:19px;margin-bottom:8px}
.blog-teaser-grid span{color:var(--muted);line-height:1.5}
.text-link{display:inline-flex;margin-top:18px;color:var(--blue);font-weight:900}
.purchase{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(340px,430px);gap:34px;align-items:center;
  padding:66px 6vw;background:white;border-top:1px solid var(--line);border-bottom:1px solid var(--line)
}
.compact-purchase{padding:42px 6vw}
.purchase-card{padding:28px;background:#f7fcfa;border:2px solid #9fd5c8;border-radius:8px;box-shadow:var(--shadow)}
.purchase-card span{font-weight:900;color:var(--teal)}
.purchase-card b{display:block;margin:12px 0;font-size:32px}
.contact-section{display:grid;grid-template-columns:minmax(0,1fr) minmax(340px,430px);gap:34px;align-items:center;padding:62px 6vw;background:var(--deep);color:white}
.compact-contact{padding:42px 6vw}
.contact-section p{color:#d7e3ff;line-height:1.58}
.contact-section h2{margin:0;font-size:34px;line-height:1.16}
.contact-card{padding:24px;background:white;color:var(--ink);border-radius:8px}
.contact-card b,.contact-card span{display:block}
.contact-card span{margin-top:10px;color:var(--muted);line-height:1.5}
.faq-list{display:grid;gap:10px}
details{background:white;border:1px solid var(--line);border-radius:8px;padding:18px 20px}
summary{cursor:pointer;font-weight:900}
details p{margin:12px 0 0}
.official-links{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
.official-links h3{grid-column:1/-1}
.official-links a{display:flex;align-items:center;min-height:68px;padding:14px;background:white;border:1px solid var(--line);border-radius:8px;color:var(--blue);font-weight:900;line-height:1.35}
.compact-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.compact-links a{display:inline-flex;align-items:center;min-height:42px;padding:10px 14px;background:#eef8f7;border:1px solid #d5ecea;border-radius:8px;color:var(--navy);font-weight:900}
footer{display:flex;justify-content:space-between;gap:18px;padding:28px 6vw;color:white;background:var(--deep)}
footer span{color:#c5d1e8}
.footer-company{display:grid;gap:7px;max-width:760px}
.footer-company address{font-style:normal;color:#c5d1e8;line-height:1.55}
.footer-links{display:flex;gap:14px;flex-wrap:wrap}
.footer-links a{color:#c5d1e8;font-weight:800}
.cookie-banner{
  position:fixed;right:18px;bottom:18px;z-index:80;
  width:min(460px,calc(100vw - 36px));
  display:grid;gap:14px;
  padding:16px;background:white;border:1px solid var(--line);border-radius:8px;
  box-shadow:0 22px 60px rgba(8,29,53,.18)
}
.cookie-banner[hidden]{display:none}
.cookie-banner p{margin:5px 0 0;color:var(--muted);line-height:1.45}
.cookie-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.cookie-actions button,.cookie-actions a{
  display:inline-flex;align-items:center;min-height:42px;padding:10px 13px;border-radius:8px;
  border:0;background:#e8edf7;color:var(--ink);font-weight:900;font:inherit;cursor:pointer
}
.cookie-actions #cookieAccept{background:var(--blue);color:white}
@media(max-width:1100px){
  .essence-grid,.quick-map,.topic-grid,.project-grid,.feature-grid,.official-links,.detail-grid,.blog-teaser-grid{grid-template-columns:1fr 1fr}
  .knowledge-layout,.bdo-number,.intro-band,.purchase,.contact-section,.ppwr-public{grid-template-columns:1fr}
}
@media(max-width:900px){
  .site-header{align-items:flex-start;flex-direction:column}
  nav{width:100%;overflow:auto;padding-bottom:4px}
}
@media(max-width:760px){
  .hero{min-height:560px;padding-top:58px;background:#153a34}
  .hero-bg{background-position:62% center}
  .hero::before{background:rgba(7,31,27,.68)}
  h1{font-size:38px}
  .lead{font-size:18px}
  .essence-grid,.quick-map,.bdo-number-grid,.intro-list,.topic-grid,.project-grid,.feature-grid,.process-grid,.official-links,.detail-grid,.blog-teaser-grid{grid-template-columns:1fr}
  .ppwr-checklist{grid-template-columns:1fr}
  footer{flex-direction:column;align-items:flex-start}
  .cookie-banner{left:18px;right:18px;width:auto}
}
@media(max-width:520px){
  .site-header{gap:12px;padding:14px 20px}
  .brand{font-size:20px}
  .hero{min-height:640px;padding:46px 20px 38px}
  .hero-content{width:calc(100vw - 40px);max-width:calc(100vw - 40px)}
  .hero-content h1{width:100%;font-size:31px;overflow-wrap:anywhere}
  .lead{font-size:17px}
  .hero-actions{display:grid;grid-template-columns:1fr;margin-top:24px}
  .hero-actions .button{width:100%}
  .hero-points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero-points span{display:flex;min-width:0;align-items:center;justify-content:center;text-align:center}
}