/* ===== 00. Design tokens ===== */
:root{
  --bd-navy:#081A38;
  --bd-navy-2:#12306B;
  --bd-navy-3:#0B2247;
  --bd-blue:#1E4FD8;
  --bd-blue-soft:#5B8DFF;
  --bd-silver:#C9D4E6;
  --bd-white:#F3F6FC;
  --bd-orange:#FF5B2E;
  --bd-teal:#17C3A2;
  --bd-amber:#FFB020;
  --bd-teal-ink:#0E6B5E;
  --bd-line:rgba(201,212,230,.16);
  --bd-line-strong:rgba(201,212,230,.32);
  --bd-glass:rgba(9,26,54,.82);
  --bd-r-lg:28px;
  --bd-r:20px;
  --bd-r-sm:14px;
  --bd-r-pill:999px;
  --bd-container:1220px;
  --bd-gutter:clamp(18px,4vw,52px);
  --bd-header-h:76px;
  --bd-font-display:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC",sans-serif;
  --bd-font-body:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  --bd-font-index:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --bd-ease:cubic-bezier(.22,1,.36,1);
  --bd-shadow:0 24px 60px rgba(3,10,24,.45);
}
/* ===== 01. Reset & base ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html.bd-lock,body.bd-lock{overflow:hidden}
body{
  margin:0;
  font-family:var(--bd-font-body);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  color:var(--bd-white);
  background-color:var(--bd-navy);
  background-image:
    radial-gradient(1200px 620px at 84% -10%, rgba(30,79,216,.45), transparent 62%),
    radial-gradient(900px 540px at -12% 14%, rgba(23,195,162,.13), transparent 62%),
    radial-gradient(760px 760px at 108% 88%, rgba(255,91,46,.10), transparent 66%);
  -webkit-font-smoothing:antialiased;
}
@media (min-width:900px){body{background-attachment:fixed}}
h1,h2,h3,h4,p,ul,ol,li,figure,blockquote,dl,dd{margin:0;padding:0}
ul,ol{list-style:none}
img,picture,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
::selection{background:rgba(30,79,216,.55);color:#fff}
:focus-visible{outline:2px solid var(--bd-teal);outline-offset:3px;border-radius:8px}
/* ===== 02. Utilities ===== */
.bd-visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.bd-container{width:100%;max-width:var(--bd-container);margin-inline:auto;padding-inline:var(--bd-gutter)}
.bd-skip{position:fixed;left:16px;top:-84px;z-index:140;padding:12px 20px;border-radius:0 0 var(--bd-r-sm) var(--bd-r-sm);background:var(--bd-teal);color:#04231C;font-weight:700;transition:top .2s var(--bd-ease)}
.bd-skip:focus{top:0}
.bd-divider{height:1px;border:0;margin:clamp(28px,4vw,56px) 0;background:linear-gradient(90deg,transparent,var(--bd-line-strong),transparent)}
/* ===== 03. Typography ===== */
.bd-display{font-family:var(--bd-font-display);font-weight:200;font-size:clamp(2.6rem,6vw,5.5rem);line-height:1.05;letter-spacing:-.02em}
.bd-h2{font-family:var(--bd-font-display);font-weight:200;font-size:clamp(1.9rem,3.4vw,2.5rem);line-height:1.15;letter-spacing:-.02em}
.bd-h3{font-size:clamp(1.25rem,1.6vw,1.5rem);font-weight:600;line-height:1.3}
.bd-lede{font-size:clamp(1.05rem,1.3vw,1.2rem);line-height:1.7;color:var(--bd-silver);max-width:58ch}
.bd-eyebrow{font-family:var(--bd-font-index);font-size:12.5px;letter-spacing:.08em;color:var(--bd-blue-soft)}
.bd-note{font-size:13.5px;line-height:1.7;color:rgba(201,212,230,.78);padding-left:14px;border-left:2px solid var(--bd-blue-soft)}
.bd-prose{max-width:68ch;color:var(--bd-silver);font-size:17px;line-height:1.8}
.bd-prose h2{font-family:var(--bd-font-display);font-weight:200;font-size:clamp(1.6rem,2.6vw,2.1rem);line-height:1.2;color:var(--bd-white);margin-bottom:.6em}
.bd-prose h3{font-size:1.25rem;font-weight:600;color:var(--bd-white);margin:1.6em 0 .5em}
.bd-prose p+p{margin-top:1.05em}
.bd-prose a{color:var(--bd-blue-soft);border-bottom:1px solid rgba(91,141,255,.4)}
.bd-prose a:hover{color:var(--bd-white);border-bottom-color:var(--bd-white)}
.bd-prose ul{margin-top:1em;display:grid;gap:.5em}
.bd-prose ul li{padding-left:20px;position:relative}
.bd-prose ul li::before{content:"";position:absolute;left:0;top:.78em;width:7px;height:7px;border-radius:50%;background:var(--bd-teal)}
/* ===== 04. Layout ===== */
.bd-section{position:relative;padding:clamp(56px,8vw,120px) 0}
.bd-section--tight{padding-block:clamp(36px,5vw,72px)}
.bd-section--light{background:linear-gradient(180deg,#F3F6FC,#E4EBF8);color:var(--bd-navy)}
.bd-section--light .bd-eyebrow{color:var(--bd-teal-ink)}
.bd-section--light .bd-lede,.bd-section--light .bd-prose{color:rgba(8,26,56,.78)}
.bd-section--light .bd-card{background:#fff;border-color:rgba(8,26,56,.12);box-shadow:0 18px 40px rgba(8,26,56,.08)}
.bd-section--light .bd-card__body{color:rgba(8,26,56,.74)}
.bd-section--light .bd-note{color:rgba(8,26,56,.7);border-left-color:var(--bd-teal-ink)}
.bd-split{display:grid;grid-template-columns:minmax(0,2.2fr) minmax(220px,1fr);gap:clamp(24px,3vw,56px);align-items:start}
.bd-bento{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(14px,1.6vw,24px);align-items:start}
.bd-card{grid-column:span 4;position:relative;padding:clamp(20px,2.4vw,32px);border-radius:var(--bd-r-lg);border:1px solid var(--bd-line);background:linear-gradient(160deg,rgba(18,48,107,.66),rgba(8,26,56,.9));transition:transform .35s var(--bd-ease),border-color .35s var(--bd-ease),box-shadow .35s var(--bd-ease)}
.bd-card:hover{transform:translateY(-4px);border-color:rgba(91,141,255,.55);box-shadow:0 22px 50px rgba(3,10,24,.5)}
.bd-card--wide{grid-column:span 8}
.bd-card--tall{grid-row:span 2}
.bd-card--full{grid-column:1/-1}
.bd-card--accent{background:linear-gradient(150deg,rgba(30,79,216,.9),rgba(18,48,107,.92));border-color:rgba(91,141,255,.6)}
.bd-card--drop{margin-top:clamp(18px,4vw,64px)}
.bd-card__head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.bd-card__title{font-size:22px;font-weight:600;line-height:1.3;letter-spacing:-.01em}
.bd-card__body{font-size:15.5px;line-height:1.75;color:rgba(201,212,230,.82)}
.bd-card__body p+p{margin-top:.8em}
.bd-card__foot{margin-top:18px;display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.bd-card>*+*{margin-top:12px}
/* ===== 05. Buttons & pills ===== */
.bd-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 24px;border-radius:var(--bd-r-pill);border:1px solid transparent;font-size:15px;font-weight:600;line-height:1.2;transition:transform .25s var(--bd-ease),background .25s var(--bd-ease),border-color .25s var(--bd-ease),color .25s var(--bd-ease)}
.bd-btn--primary{background:linear-gradient(135deg,#FF5B2E,#FF8B5F);color:#081A38;box-shadow:0 14px 32px rgba(255,91,46,.28)}
.bd-btn--primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px rgba(255,91,46,.36)}
.bd-btn--ghost{border-color:var(--bd-line-strong);background:rgba(11,34,71,.55);color:var(--bd-white)}
.bd-btn--ghost:hover{border-color:var(--bd-blue-soft);background:rgba(30,79,216,.26)}
.bd-btn--quiet{color:var(--bd-blue-soft);padding-inline:6px}
.bd-btn--quiet:hover{color:var(--bd-white)}
/* ===== 06. Tags, status, breadcrumb, rail ===== */
.bd-tag{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:var(--bd-r-pill);border:1px solid var(--bd-line-strong);font-family:var(--bd-font-index);font-size:12px;letter-spacing:.06em;color:var(--bd-silver)}
.bd-tag--new{border-color:rgba(23,195,162,.55);background:rgba(23,195,162,.12);color:#7FE9D4}
.bd-tag--alert{border-color:rgba(255,91,46,.55);background:rgba(255,91,46,.14);color:#FFB59F}
.bd-tag--info{border-color:rgba(91,141,255,.5);background:rgba(30,79,216,.18);color:#BFD2FF}
.bd-status{display:inline-flex;align-items:center;gap:9px;font-size:14px;color:var(--bd-silver)}
.bd-status::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--bd-silver);flex:0 0 auto}
.bd-status--ok::before{background:var(--bd-teal);box-shadow:0 0 0 3px rgba(23,195,162,.2)}
.bd-status--warn::before{background:var(--bd-amber);box-shadow:0 0 0 3px rgba(255,176,32,.18)}
.bd-status--alert::before{background:var(--bd-orange);box-shadow:0 0 0 3px rgba(255,91,46,.18)}
.bd-breadcrumb{font-family:var(--bd-font-index);font-size:12.5px;letter-spacing:.06em;color:var(--bd-silver)}
.bd-breadcrumb ol{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.bd-breadcrumb li+li::before{content:"/";margin-right:10px;color:rgba(201,212,230,.4)}
.bd-breadcrumb a:hover{color:var(--bd-white)}
.bd-breadcrumb [aria-current="page"]{color:var(--bd-blue-soft)}
.bd-indexrail{position:sticky;top:calc(var(--bd-header-h) + 28px);display:flex;flex-direction:column;gap:6px}
.bd-indexrail__link{display:flex;gap:10px;align-items:baseline;padding:9px 12px;border-radius:var(--bd-r-sm);border-left:2px solid transparent;font-size:14px;color:var(--bd-silver);transition:background .25s var(--bd-ease),color .25s var(--bd-ease)}
.bd-indexrail__link:hover{background:rgba(30,79,216,.14);color:var(--bd-white)}
.bd-indexrail__link[aria-current="true"]{border-left-color:var(--bd-blue-soft);background:rgba(30,79,216,.18);color:var(--bd-white)}
.bd-indexrail__num{font-family:var(--bd-font-index);font-size:12px;color:rgba(201,212,230,.6)}
/* ===== 07. Media placeholders ===== */
.bd-media{position:relative;overflow:hidden;aspect-ratio:16/9;border-radius:var(--bd-r-lg);border:1px solid var(--bd-line);background-image:radial-gradient(120% 90% at 12% 8%, rgba(91,141,255,.38), transparent 60%),linear-gradient(150deg,#12306B,#081A38)}
.bd-media::after{content:"";position:absolute;right:-18%;bottom:-58%;width:62%;aspect-ratio:1;border-radius:50%;background:radial-gradient(circle,rgba(23,195,162,.26),transparent 70%);pointer-events:none}
.bd-media--4x3{aspect-ratio:4/3}
.bd-media--3x2{aspect-ratio:3/2}
.bd-media--1x1{aspect-ratio:1/1}
.bd-media--21x9{aspect-ratio:21/9}
.bd-media__img{width:100%;height:100%;object-fit:cover}
.bd-media__caption{position:absolute;left:16px;bottom:14px;z-index:1;font-family:var(--bd-font-index);font-size:12px;letter-spacing:.08em;color:var(--bd-silver)}
/* ===== 08. Tabs, chips, details ===== */
.bd-tabs{position:relative}
.bd-tabs__list{display:inline-flex;flex-wrap:wrap;gap:6px;padding:6px;border-radius:var(--bd-r-pill);border:1px solid var(--bd-line);background:rgba(11,34,71,.7)}
.bd-tabs__tab{padding:9px 18px;border-radius:var(--bd-r-pill);font-size:14px;font-weight:500;color:var(--bd-silver);transition:background .25s var(--bd-ease),color .25s var(--bd-ease)}
.bd-tabs__tab:hover{color:var(--bd-white);background:rgba(91,141,255,.16)}
.bd-tabs__tab[aria-selected="true"]{background:linear-gradient(135deg,var(--bd-blue),#3C6BEA);color:#fff;box-shadow:0 10px 24px rgba(30,79,216,.42)}
.bd-tabs__panel{margin-top:22px}
.bd-tabs__panel[hidden]{display:none}
.bd-chips{display:flex;flex-wrap:wrap;gap:10px}
.bd-chip{padding:7px 15px;border-radius:var(--bd-r-pill);border:1px solid var(--bd-line-strong);background:rgba(11,34,71,.5);font-size:13.5px;color:var(--bd-silver);transition:border-color .25s var(--bd-ease),color .25s var(--bd-ease),background .25s var(--bd-ease)}
.bd-chip:hover{border-color:var(--bd-blue-soft);color:var(--bd-white)}
.bd-chip[aria-pressed="true"]{border-color:var(--bd-teal);background:rgba(23,195,162,.16);color:#7FE9D4}
.bd-details{border:1px solid var(--bd-line);border-radius:var(--bd-r);background:rgba(11,34,71,.45);overflow:hidden}
.bd-details+.bd-details{margin-top:12px}
.bd-details__summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 20px;font-weight:500;list-style:none;cursor:pointer}
.bd-details__summary::-webkit-details-marker{display:none}
.bd-details__summary::after{content:"+";font-family:var(--bd-font-index);color:var(--bd-blue-soft)}
.bd-details[open] .bd-details__summary::after{content:"–"}
.bd-details__body{padding:0 20px 20px;font-size:15.5px;color:var(--bd-silver)}
/* ===== 09. Reveal & misc ===== */
[data-reveal]{opacity:0;transform:translateY(18px);transition:opacity .5s var(--bd-ease),transform .5s var(--bd-ease)}
[data-reveal].is-visible{opacity:1;transform:none}
.bd-top{position:fixed;right:clamp(16px,3vw,32px);bottom:clamp(16px,3vw,32px);z-index:80;width:48px;height:48px;display:grid;place-items:center;border-radius:50%;border:1px solid var(--bd-line-strong);background:rgba(9,26,54,.92);color:var(--bd-white);opacity:0;visibility:hidden;transition:opacity .3s var(--bd-ease),visibility .3s var(--bd-ease),border-color .3s var(--bd-ease)}
.bd-top::before{content:"↑";font-size:16px}
.bd-top[data-open="true"]{opacity:1;visibility:visible}
.bd-top:hover{border-color:var(--bd-teal);color:#7FE9D4}
/* ===== 10. Header ===== */
.bd-header{--bd-header-h:76px;position:sticky;top:0;z-index:100;background:linear-gradient(180deg,rgba(8,26,56,.95),rgba(8,26,56,.78));backdrop-filter:blur(16px) saturate(140%);border-bottom:1px solid var(--bd-line)}
.bd-header[data-condensed="true"]{--bd-header-h:62px;background:rgba(6,20,44,.97)}
.bd-header__inner{display:flex;align-items:center;gap:clamp(10px,2vw,26px);min-height:var(--bd-header-h);padding-block:8px}
.bd-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;overflow:hidden;pointer-events:none}
.bd-progress__bar{display:block;width:100%;height:100%;transform:scaleX(0);transform-origin:0 50%;background:linear-gradient(90deg,var(--bd-teal),var(--bd-blue-soft),var(--bd-orange))}
.bd-brand{flex:0 0 auto}
.bd-brand__link{display:flex;align-items:center;gap:12px}
.bd-brand__glyph{position:relative;flex:0 0 auto;width:36px;height:36px;border-radius:11px;background:linear-gradient(140deg,var(--bd-blue-soft),var(--bd-blue) 48%,var(--bd-teal));clip-path:polygon(0 0,100% 0,100% 64%,64% 100%,0 100%);box-shadow:0 8px 22px rgba(30,79,216,.45)}
.bd-brand__glyph::after{content:"";position:absolute;left:9px;top:9px;width:9px;height:9px;border-radius:2px;background:rgba(243,246,252,.9)}
.bd-brand__text{display:flex;flex-direction:column;line-height:1.2}
.bd-brand__name{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--bd-white)}
.bd-brand__desc{font-family:var(--bd-font-index);font-size:11.5px;letter-spacing:.08em;color:var(--bd-silver);white-space:nowrap}
.bd-header[data-condensed="true"] .bd-brand__desc{display:none}
.bd-nav{flex:1 1 auto;min-width:0}
.bd-nav__list{display:flex;align-items:center;gap:2px}
.bd-nav__link{position:relative;display:inline-flex;align-items:center;gap:7px;padding:9px 13px;border-radius:var(--bd-r-pill);font-size:14px;font-weight:500;color:var(--bd-silver);white-space:nowrap;transition:background .25s var(--bd-ease),color .25s var(--bd-ease),box-shadow .25s var(--bd-ease)}
.bd-nav__link:hover{color:var(--bd-white);background:rgba(91,141,255,.15)}
.bd-nav__link[aria-current="page"]{color:#fff;background:var(--bd-blue);box-shadow:inset 0 0 0 1px var(--bd-blue-soft),0 6px 18px rgba(30,79,216,.45)}
.bd-nav__dot{width:7px;height:7px;border-radius:50%;background:rgba(201,212,230,.32);flex:0 0 auto}
.bd-nav__dot[data-dot="update"]{background:var(--bd-teal);box-shadow:0 0 0 3px rgba(23,195,162,.18)}
.bd-nav__dot[data-dot="alert"]{background:var(--bd-orange);box-shadow:0 0 0 3px rgba(255,91,46,.18)}
.bd-header__actions{display:flex;align-items:center;gap:8px;margin-left:auto;flex:0 0 auto}
.bd-action{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:var(--bd-r-pill);border:1px solid var(--bd-line-strong);background:rgba(11,34,71,.55);font-size:14px;color:var(--bd-silver);white-space:nowrap;transition:background .25s var(--bd-ease),border-color .25s var(--bd-ease),color .25s var(--bd-ease)}
.bd-action:hover{border-color:var(--bd-blue-soft);background:rgba(30,79,216,.24);color:var(--bd-white)}
.bd-action[data-copied="true"]{border-color:var(--bd-teal);background:rgba(23,195,162,.16);color:#7FE9D4}
.bd-action__icon{position:relative;width:14px;height:14px;border-radius:50%;border:2px solid currentColor;flex:0 0 auto}
.bd-action__icon::after{content:"";position:absolute;left:9px;top:8px;width:8px;height:2px;background:currentColor;transform:rotate(45deg);transform-origin:left center}
.bd-navtoggle{display:none;width:44px;height:44px;border-radius:var(--bd-r-sm);border:1px solid var(--bd-line-strong);background:rgba(11,34,71,.6);align-items:center;justify-content:center}
.bd-navtoggle__bars{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--bd-white);transition:background .25s var(--bd-ease)}
.bd-navtoggle__bars::before,.bd-navtoggle__bars::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--bd-white);transition:transform .3s var(--bd-ease)}
.bd-navtoggle__bars::before{top:-6px}
.bd-navtoggle__bars::after{top:6px}
.bd-navtoggle[aria-expanded="true"] .bd-navtoggle__bars{background:transparent}
.bd-navtoggle[aria-expanded="true"] .bd-navtoggle__bars::before{transform:translateY(6px) rotate(45deg)}
.bd-navtoggle[aria-expanded="true"] .bd-navtoggle__bars::after{transform:translateY(-6px) rotate(-45deg)}
/* ===== 11. Index overlay ===== */
.bd-indexpanel{position:fixed;inset:0;z-index:120;display:flex;justify-content:center;align-items:flex-start;padding:calc(var(--bd-header-h) + 20px) var(--bd-gutter) 40px;overflow-y:auto;background:rgba(4,12,28,.84);backdrop-filter:blur(10px);opacity:0;visibility:hidden;transition:opacity .3s var(--bd-ease),visibility .3s var(--bd-ease)}
.bd-indexpanel[data-open="true"]{opacity:1;visibility:visible}
.bd-indexpanel__inner{width:min(980px,100%);padding:clamp(22px,4vw,44px);border-radius:var(--bd-r-lg);border:1px solid var(--bd-line-strong);background:linear-gradient(160deg,rgba(18,48,107,.97),rgba(8,26,56,.99));box-shadow:var(--bd-shadow);transform:translateY(14px);transition:transform .4s var(--bd-ease)}
.bd-indexpanel[data-open="true"] .bd-indexpanel__inner{transform:none}
.bd-indexpanel__head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:18px;margin-bottom:22px;border-bottom:1px solid var(--bd-line)}
.bd-indexpanel__close{padding:8px 16px;border-radius:var(--bd-r-pill);border:1px solid var(--bd-line-strong);font-size:13.5px;color:var(--bd-silver);transition:border-color .25s var(--bd-ease),color .25s var(--bd-ease)}
.bd-indexpanel__close:hover{border-color:var(--bd-teal);color:#7FE9D4}
.bd-indexpanel__list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.bd-indexpanel__item{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:14px;padding:14px 16px;border-radius:var(--bd-r-sm);border:1px solid transparent;transition:background .25s var(--bd-ease),border-color .25s var(--bd-ease)}
.bd-indexpanel__item:hover{background:rgba(30,79,216,.16);border-color:var(--bd-line)}
.bd-indexpanel__num{font-family:var(--bd-font-index);font-size:12px;color:var(--bd-blue-soft)}
.bd-indexpanel__link{font-size:16px;font-weight:600;color:var(--bd-white)}
.bd-indexpanel__link:hover{color:var(--bd-blue-soft)}
.bd-indexpanel__note{font-family:var(--bd-font-index);font-size:11.5px;letter-spacing:.06em;color:rgba(201,212,230,.7)}
.bd-indexpanel__foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin-top:24px;padding-top:20px;border-top:1px solid var(--bd-line)}
.bd-indexpanel__foot .bd-note{max-width:34ch}
/* ===== 12. Footer ===== */
.bd-footer{position:relative;overflow:hidden;margin-top:clamp(48px,7vw,110px);border-top:1px solid var(--bd-line);background:linear-gradient(180deg,rgba(8,26,56,.22),rgba(4,12,26,.97))}
.bd-footer::before{content:"";position:absolute;left:-12%;top:-160px;width:560px;height:560px;border-radius:50%;background:radial-gradient(circle,rgba(30,79,216,.32),transparent 68%);pointer-events:none}
.bd-footer__inner{position:relative;display:grid;grid-template-columns:minmax(200px,1.5fr) repeat(4,minmax(130px,1fr));gap:clamp(20px,2.6vw,40px);padding-block:clamp(40px,6vw,72px)}
.bd-footer__brand{display:flex;flex-direction:column;align-items:flex-start;gap:10px}
.bd-footer__name{font-size:19px;font-weight:700;letter-spacing:.01em;color:var(--bd-white)}
.bd-footer__desc{font-family:var(--bd-font-index);font-size:11.5px;letter-spacing:.08em;color:var(--bd-silver)}
.bd-footer__brand .bd-btn{margin-top:10px}
.bd-footer__col{display:flex;flex-direction:column;gap:14px}
.bd-footer__title{font-family:var(--bd-font-index);font-size:12px;font-weight:500;letter-spacing:.1em;color:var(--bd-blue-soft)}
.bd-footer__list{display:flex;flex-direction:column;gap:10px}
.bd-footer__link{display:inline-block;align-self:flex-start;font-size:14.5px;color:var(--bd-silver);border-bottom:1px solid transparent;transition:color .25s var(--bd-ease),border-color .25s var(--bd-ease)}
.bd-footer__link:hover{color:var(--bd-white);border-bottom-color:var(--bd-blue-soft)}
.bd-footer__meta{position:relative;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:clamp(18px,3vw,40px);padding-block:clamp(20px,3vw,34px);border-top:1px solid var(--bd-line)}
.bd-footer__contact{display:flex;flex-direction:column;gap:8px;font-size:14px;color:var(--bd-silver)}
.bd-footer__eyebrow{font-family:var(--bd-font-index);font-size:11.5px;letter-spacing:.1em;color:var(--bd-blue-soft)}
.bd-footer__copy{align-self:flex-start;font-family:var(--bd-font-index);font-size:13.5px;letter-spacing:.02em;color:var(--bd-white);border-bottom:1px dashed rgba(201,212,230,.4);transition:color .25s var(--bd-ease),border-color .25s var(--bd-ease)}
.bd-footer__copy:hover{color:var(--bd-teal);border-bottom-color:var(--bd-teal)}
.bd-footer__copy[data-copied="true"]{color:#7FE9D4;border-bottom-color:var(--bd-teal)}
.bd-footer__addr{color:rgba(201,212,230,.8)}
.bd-footer__note{max-width:46ch;font-size:12.5px;color:rgba(201,212,230,.65)}
.bd-footer__legal{display:flex;flex-wrap:wrap;align-items:center;gap:16px;font-family:var(--bd-font-index);font-size:12px;letter-spacing:.06em;color:rgba(201,212,230,.7)}
/* ===== 13. Responsive ===== */
@media (max-width:1080px){
  .bd-navtoggle{display:inline-flex}
  .bd-nav{position:fixed;left:0;right:0;top:var(--bd-header-h);max-height:calc(100dvh - var(--bd-header-h));overflow-y:auto;padding:16px var(--bd-gutter) 28px;background:linear-gradient(180deg,rgba(8,26,56,.99),rgba(5,16,36,.99));border-bottom:1px solid var(--bd-line);opacity:0;visibility:hidden;transform:translateY(-10px);transition:opacity .3s var(--bd-ease),transform .3s var(--bd-ease),visibility .3s var(--bd-ease)}
  .bd-nav[data-open="true"]{opacity:1;visibility:visible;transform:none}
  .bd-nav__list{flex-direction:column;align-items:stretch;gap:6px}
  .bd-nav__link{justify-content:space-between;padding:14px 16px;border-radius:var(--bd-r-sm);border:1px solid var(--bd-line);background:rgba(18,48,107,.5);font-size:16px}
  .bd-nav__link[aria-current="page"]{box-shadow:inset 0 0 0 1px var(--bd-blue-soft)}
  .bd-footer__inner{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bd-footer__brand{grid-column:1/-1}
}
@media (max-width:900px){
  .bd-brand__desc{display:none}
  .bd-bento{grid-template-columns:repeat(6,minmax(0,1fr))}
  .bd-card,.bd-card--wide{grid-column:span 3}
  .bd-card--full{grid-column:1/-1}
  .bd-split{grid-template-columns:1fr}
  .bd-indexrail{position:static}
}
@media (max-width:640px){
  body{font-size:16px}
  .bd-bento{grid-template-columns:1fr}
  .bd-card,.bd-card--wide,.bd-card--full,.bd-card--tall{grid-column:auto;grid-row:auto}
  .bd-card--drop{margin-top:0}
  .bd-indexpanel__list{grid-template-columns:1fr}
  .bd-header__actions .bd-action__text{font-size:13px}
  .bd-footer__inner{grid-template-columns:1fr}
  .bd-footer__meta{flex-direction:column;align-items:flex-start}
  .bd-tabs__list{display:flex;width:100%}
  .bd-tabs__tab{flex:1 1 auto;text-align:center}
}
@media (max-width:420px){
  .bd-action--copy{display:none}
  .bd-action{padding:9px 13px}
}
@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;transform:none}
}