/* ============================================================
   1227 · KẾ BÀI VIỆT — Blueprint drafting style
   Prussian blue + white drafting lines + amber annotations
   ============================================================ */

:root {
  --bp-ink: #10295e;
  --bp-ink-2: #0b1f4b;
  --bp-deep: #0a1c42;
  --bp-blue: #12336b;
  --bp-blue-2: #16397c;
  --bp-white: #dbeafe;
  --bp-white-soft: rgba(219, 234, 254, .78);
  --bp-white-mute: rgba(219, 234, 254, .62);
  --bp-line: rgba(219, 234, 254, .3);
  --bp-line-soft: rgba(219, 234, 254, .16);
  --bp-amber: #fbbf24;
  --bp-amber-deep: #d99e0b;
  --bp-shadow: rgba(4, 12, 34, .55);
  --bp-mono: "IBM Plex Mono", ui-monospace, "Courier New", monospace;
  --bp-sans: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --bp-shell: 1200px;
  --bp-radius: 4px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body.bp-body {
  font-family: var(--bp-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--bp-white-soft);
  background-color: var(--bp-ink);
  background-image:
    linear-gradient(rgba(219, 234, 254, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(219, 234, 254, .05) 1px, transparent 1px);
  background-size: 36px 36px;
  min-height: 100vh;
  overflow-x: hidden;
}

img {height:auto; display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

.bp-shell { width: 100%; max-width: var(--bp-shell); margin: 0 auto; padding: 0 24px; }

.bp-skip {
  position: absolute; left: -9999px; top: 0; z-index: 999;
  padding: 10px 16px; background: var(--bp-amber); color: #0a1c42;
  font-weight: 700; border-radius: 0 0 var(--bp-radius) 0;
}
.bp-skip:focus { left: 0; }

/* ---------- Coordinate strip ---------- */
.bp-coord {
  background: var(--bp-deep);
  border-bottom: 1px solid var(--bp-line-soft);
  font-family: var(--bp-mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--bp-white-mute);
}
.bp-coord-in { display: flex; justify-content: space-between; gap: 16px; padding-top: 7px; padding-bottom: 7px; }
.bp-coord-in span:nth-child(2) { color: var(--bp-amber); }

/* ---------- Header ---------- */
.bp-header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(16, 41, 94, .94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--bp-line);
}
.bp-header-in { display: flex; align-items: center; justify-content: space-between; gap: 28px; min-height: 76px; }
.bp-brand { flex: 0 0 auto; display: block; }
.bp-brand-img { width: 196px; height: auto; }

.bp-nav-list { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.bp-nav-a {
  position: relative; display: inline-block;
  padding: 8px 12px; font-size: 14.5px; font-weight: 600;
  color: var(--bp-white-soft); white-space: nowrap;
  border-bottom: 2px dotted transparent;
  transition: color .18s, border-color .18s;
}
.bp-nav-a:hover, .bp-nav-a.is-active { color: #fff; border-bottom-color: var(--bp-amber); }

.bp-burger {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 46px; height: 46px; padding: 0 11px;
  border: 1px solid var(--bp-line); border-radius: var(--bp-radius);
}
.bp-burger span { display: block; height: 2px; width: 100%; background: var(--bp-white); transition: transform .22s, opacity .22s; }
.bp-burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.bp-burger.is-open span:nth-child(2) { opacity: 0; }
.bp-burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.bp-hairline { height: 0; border-top: 1px solid var(--bp-line-soft); }

/* ---------- Mobile drafting sheet (drop-down) ---------- */
.bp-sheet {
  position: fixed; inset: 0 0 auto 0; z-index: 90;
  max-height: 0; overflow: hidden;
  background: var(--bp-blue);
  transition: max-height .32s ease;
}
.bp-sheet.is-open { max-height: 86vh; overflow-y: auto; box-shadow: 0 24px 48px var(--bp-shadow); }
.bp-sheet-grid {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(219, 234, 254, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(219, 234, 254, .07) 1px, transparent 1px);
  background-size: 24px 24px;
}
.bp-sheet-body { position: relative; padding: 18px 24px 26px; }
.bp-sheet-top { display: flex; align-items: center; justify-content: space-between; padding-bottom: 12px; border-bottom: 1px solid var(--bp-line); }
.bp-sheet-title { font-family: var(--bp-mono); font-size: 12px; letter-spacing: .22em; color: var(--bp-amber); }
.bp-sheet-close {
  width: 42px; height: 42px; font-size: 26px; line-height: 1;
  border: 1px solid var(--bp-line); border-radius: var(--bp-radius); color: var(--bp-white);
}
.bp-sheet-list { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 18px; padding: 14px 0 6px; }
.bp-sheet-list a {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 10px; border: 1px solid transparent; border-radius: var(--bp-radius);
  color: var(--bp-white-soft); transition: background .16s, border-color .16s;
}
.bp-sheet-list a:hover, .bp-sheet-list a:focus-visible { background: rgba(219, 234, 254, .07); border-color: var(--bp-line); color: #fff; }
.bp-sheet-no { font-family: var(--bp-mono); font-size: 12px; color: var(--bp-amber); }
.bp-sheet-name { flex: 1; font-weight: 600; font-size: 15px; }
.bp-sheet-list b { color: var(--bp-amber); font-weight: 400; }
.bp-sheet-note {
  margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--bp-line);
  font-family: var(--bp-mono); font-size: 11.5px; letter-spacing: .04em; color: var(--bp-white-mute);
}

/* ---------- Buttons ---------- */
.bp-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: var(--bp-radius);
  font-size: 14.5px; font-weight: 700; letter-spacing: .01em;
  border: 1px solid var(--bp-amber); color: var(--bp-amber);
  transition: background .18s, color .18s, transform .18s;
}
.bp-btn b { font-weight: 700; transition: transform .18s; }
.bp-btn:hover b { transform: translateX(3px); }
.bp-btn-amber { background: var(--bp-amber); color: #0a1c42; }
.bp-btn-amber:hover { background: #ffd34d; border-color: #ffd34d; }
.bp-btn-line { background: transparent; color: var(--bp-white); border-color: var(--bp-line); }
.bp-btn-line:hover { border-color: var(--bp-amber); color: var(--bp-amber); }

/* ---------- Ticks & dimension lines & stamp & hatch ---------- */
.bp-tick { position: absolute; width: 14px; height: 14px; border: 0 solid var(--bp-amber); pointer-events: none; }
.bp-tick { top: -5px; left: -5px; border-top-width: 2px; border-left-width: 2px; }
.bp-tick-2 { top: -5px; left: auto; right: -5px; border-top-width: 2px; border-left-width: 0; border-right-width: 2px; }
.bp-tick-3 { top: auto; bottom: -5px; left: -5px; border-top-width: 0; border-bottom-width: 2px; border-left-width: 2px; }
.bp-tick-4 { top: auto; bottom: -5px; left: auto; right: -5px; border-top-width: 0; border-bottom-width: 2px; border-right-width: 2px; border-left-width: 0; }

.bp-dim { position: relative; height: 1px; background: rgba(219, 234, 254, .45); margin: 14px 0; }
.bp-dim::before, .bp-dim::after {
  content: ""; position: absolute; top: -4px; width: 1px; height: 9px; background: rgba(219, 234, 254, .45);
}
.bp-dim::before { left: 0; }
.bp-dim::after { right: 0; }
.bp-dim span {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  padding: 1px 10px; background: var(--bp-ink);
  font-family: var(--bp-mono); font-size: 10.5px; letter-spacing: .12em; color: var(--bp-white-mute);
}

.bp-stamp {
  display: inline-flex; align-items: center; justify-content: center;
  width: 54px; height: 54px; flex: 0 0 auto;
  border: 2px solid var(--bp-amber); border-radius: 50%;
  font-family: var(--bp-mono); font-style: normal; font-size: 10px; font-weight: 700;
  letter-spacing: .1em; color: var(--bp-amber);
  transform: rotate(-8deg); opacity: .92;
}

.bp-hatch {
  height: 12px;
  background: repeating-linear-gradient(-45deg, rgba(251, 191, 36, .55) 0 2px, transparent 2px 12px);
}

/* ---------- Sections & heads ---------- */
.bp-section { padding: 72px 0; }
.bp-section-ink {
  background: var(--bp-ink-2);
  background-image:
    linear-gradient(rgba(219, 234, 254, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(219, 234, 254, .04) 1px, transparent 1px);
  background-size: 36px 36px;
  border-top: 1px solid var(--bp-line-soft);
  border-bottom: 1px solid var(--bp-line-soft);
}
.bp-head { margin-bottom: 40px; }
.bp-head-center { text-align: center; max-width: 720px; margin: 0 auto 40px; }
.bp-head-split { display: flex; align-items: flex-end; justify-content: space-between; gap: 28px; flex-wrap: wrap; }
.bp-kicker {
  font-family: var(--bp-mono); font-size: 12px; font-weight: 600;
  letter-spacing: .24em; color: var(--bp-amber); margin-bottom: 12px;
}
.bp-kicker-amber { color: var(--bp-amber); }
.bp-h2 {
  font-size: clamp(26px, 3.2vw, 36px); font-weight: 800; line-height: 1.25;
  color: #fff; letter-spacing: -.01em; margin-bottom: 14px;
}
.bp-head-desc { color: var(--bp-white-mute); font-size: 15.5px; }
.bp-more { color: var(--bp-amber); font-weight: 600; font-size: 13.5px; }
.bp-more b { font-weight: 600; }
.bp-chip {
  display: inline-block; padding: 3px 10px;
  border: 1px solid var(--bp-amber); border-radius: 2px;
  font-family: var(--bp-mono); font-size: 11px; letter-spacing: .08em;
  text-transform: uppercase; color: var(--bp-amber);
}

/* ---------- Hero ---------- */
.bp-hero { padding: 64px 0 76px; border-bottom: 1px solid var(--bp-line-soft); }
.bp-hero-in { display: grid; grid-template-columns: 1.05fr .95fr; gap: 54px; align-items: center; }
.bp-hero-kicker {
  font-family: var(--bp-mono); font-size: 12px; font-weight: 600;
  letter-spacing: .2em; color: var(--bp-amber); margin-bottom: 18px;
}
.bp-hero-title {
  font-size: clamp(30px, 4vw, 46px); font-weight: 800; line-height: 1.18;
  color: #fff; letter-spacing: -.012em; margin-bottom: 20px;
  text-wrap: balance;
}
.bp-hero-desc { color: var(--bp-white-mute); font-size: 16.5px; max-width: 54ch; margin-bottom: 28px; }
.bp-hero-acts { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 34px; }
.bp-hero-stats { display: flex; gap: 0; border: 1px solid var(--bp-line); border-radius: var(--bp-radius); overflow: hidden; }
.bp-hero-stats li { flex: 1; padding: 16px 18px; border-left: 1px dashed var(--bp-line); }
.bp-hero-stats li:first-child { border-left: 0; }
.bp-hero-stats strong { display: block; font-family: var(--bp-mono); font-size: 24px; font-weight: 700; color: var(--bp-amber); }
.bp-hero-stats span { font-size: 13px; color: var(--bp-white-mute); }

.bp-hero-fig { position: relative; padding: 12px; border: 1px solid var(--bp-line); background: rgba(219, 234, 254, .04); }
.bp-hero-fig img { width: 100%; border: 1px solid var(--bp-line-soft); }
.bp-hero-cap { display: flex; align-items: center; gap: 14px; margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--bp-line); font-family: var(--bp-mono); font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--bp-white-mute); }
.bp-hero-dim span { background: var(--bp-ink); }

/* ---------- Category plates ---------- */
.bp-plates { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.bp-plate {
  display: flex; flex-direction: column; height: 100%;
  border: 1px solid var(--bp-line); border-radius: var(--bp-radius);
  background: rgba(219, 234, 254, .035);
  transition: border-color .2s, background .2s, transform .2s;
}
.bp-plate:hover { border-color: var(--bp-amber); background: rgba(219, 234, 254, .07); transform: translateY(-3px); }
.bp-plate-head { display: flex; align-items: center; justify-content: space-between; padding: 10px 14px; border-bottom: 1px dashed var(--bp-line); }
.bp-plate-no { font-family: var(--bp-mono); font-size: 12px; font-weight: 700; color: var(--bp-amber); letter-spacing: .08em; }
.bp-plate-tag { font-family: var(--bp-mono); font-size: 10px; letter-spacing: .18em; color: var(--bp-white-mute); }
.bp-plate-media { display: block; border-bottom: 1px solid var(--bp-line-soft); }
.bp-plate-media img { width: 100%; aspect-ratio: 16 / 11; object-fit: cover; filter: saturate(.92); transition: filter .2s; }
.bp-plate:hover .bp-plate-media img { filter: saturate(1.05); }
.bp-plate-body { display: flex; flex-direction: column; gap: 8px; padding: 16px 14px 18px; flex: 1; }
.bp-plate-name { font-size: 17px; font-weight: 700; color: #fff; }
.bp-plate-desc { font-size: 13.5px; color: var(--bp-white-mute); flex: 1; }
.bp-plate-go { font-size: 13px; font-weight: 600; color: var(--bp-amber); }
.bp-plate-go b { font-weight: 600; }

/* ---------- Spotlight: main plate + spec register ---------- */
.bp-spot { display: grid; grid-template-columns: 1.12fr .88fr; grid-auto-rows: 1fr; gap: 16px 24px; align-items: stretch; }
.bp-plate-main { grid-row: 1 / span 4; border: 1px solid var(--bp-line); border-radius: var(--bp-radius); background: rgba(219, 234, 254, .04); overflow: hidden; }
.bp-plate-main a { display: flex; flex-direction: column; height: 100%; }
.bp-plate-main-media { display: block; border-bottom: 1px solid var(--bp-line-soft); }
.bp-plate-main-media img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.bp-plate-main-body { display: flex; flex-direction: column; gap: 12px; padding: 22px 24px 26px; flex: 1; }
.bp-plate-main-title { font-size: clamp(20px, 2.2vw, 26px); font-weight: 800; line-height: 1.3; color: #fff; }
.bp-plate-main-desc { color: var(--bp-white-mute); font-size: 15px; }
.bp-plate-main-meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: auto; padding-top: 14px; border-top: 1px dashed var(--bp-line); font-family: var(--bp-mono); font-size: 12px; color: var(--bp-white-mute); }

.bp-spec { border: 1px solid var(--bp-line); border-radius: var(--bp-radius); background: rgba(219, 234, 254, .035); transition: border-color .2s, background .2s; }
.bp-spec:hover { border-color: var(--bp-amber); background: rgba(219, 234, 254, .07); }
.bp-spec a { display: flex; align-items: center; gap: 16px; height: 100%; padding: 14px 18px; }
.bp-spec-no { font-family: var(--bp-mono); font-size: 12px; font-weight: 700; color: var(--bp-amber); letter-spacing: .06em; flex: 0 0 auto; }
.bp-spec-body { flex: 1; min-width: 0; }
.bp-spec-title {
  display: block; font-size: 15.5px; font-weight: 700; color: #fff; line-height: 1.4;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.bp-spec-meta { display: flex; gap: 12px; margin-top: 5px; font-family: var(--bp-mono); font-size: 11px; color: var(--bp-white-mute); }
.bp-spec-meta i { font-style: normal; color: var(--bp-amber); }
.bp-spec-go { color: var(--bp-amber); flex: 0 0 auto; }

/* ---------- Latest cards ---------- */
.bp-grid { display: grid; gap: 20px; }
.bp-grid-4 { grid-template-columns: repeat(4, 1fr); }
.bp-card { border: 1px solid var(--bp-line); border-radius: var(--bp-radius); background: rgba(219, 234, 254, .035); overflow: hidden; transition: border-color .2s, transform .2s; }
.bp-card:hover { border-color: var(--bp-amber); transform: translateY(-3px); }
.bp-card-link { display: flex; flex-direction: column; height: 100%; }
.bp-card-media { position: relative; display: block; border-bottom: 1px solid var(--bp-line-soft); }
.bp-card-media img { width: 100%; aspect-ratio: 16 / 11; object-fit: cover; }
.bp-card-date {
  position: absolute; top: 10px; right: 10px;
  padding: 3px 9px; background: var(--bp-amber); color: #0a1c42;
  font-family: var(--bp-mono); font-style: normal; font-size: 11.5px; font-weight: 700; letter-spacing: .06em;
}
.bp-card-body { display: flex; flex-direction: column; gap: 8px; padding: 16px 16px 18px; flex: 1; }
.bp-card-cat { font-family: var(--bp-mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--bp-amber); }
.bp-card-title { font-size: 15.5px; font-weight: 700; line-height: 1.45; color: #fff; flex: 1; }
.bp-card-foot { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding-top: 10px; border-top: 1px dashed var(--bp-line); font-family: var(--bp-mono); font-size: 11.5px; color: var(--bp-white-mute); }

/* ---------- FAQ ---------- */
.bp-faq-shell { max-width: 880px; }
.bp-faq { display: grid; gap: 14px; }
.bp-faq-item { border: 1px solid var(--bp-line); border-radius: var(--bp-radius); background: rgba(219, 234, 254, .035); transition: border-color .2s; }
.bp-faq-item[open] { border-color: var(--bp-amber); border-left: 3px solid var(--bp-amber); }
.bp-faq-item summary {
  display: flex; align-items: center; gap: 16px;
  padding: 17px 20px; cursor: pointer; list-style: none;
  font-weight: 700; color: #fff; font-size: 15.5px;
}
.bp-faq-item summary::-webkit-details-marker { display: none; }
.bp-faq-no { font-family: var(--bp-mono); font-size: 12px; font-weight: 700; color: var(--bp-amber); letter-spacing: .06em; flex: 0 0 auto; }
.bp-faq-q { flex: 1; }
.bp-faq-ico { position: relative; width: 16px; height: 16px; flex: 0 0 auto; }
.bp-faq-ico::before, .bp-faq-ico::after { content: ""; position: absolute; background: var(--bp-amber); transition: transform .2s; }
.bp-faq-ico::before { left: 0; top: 7px; width: 16px; height: 2px; }
.bp-faq-ico::after { left: 7px; top: 0; width: 2px; height: 16px; }
.bp-faq-item[open] .bp-faq-ico::after { transform: scaleY(0); }
.bp-faq-a { padding: 0 20px 18px 49px; color: var(--bp-white-mute); font-size: 15px; }

/* ---------- About ---------- */
.bp-about { background: var(--bp-deep); border-top: 1px solid var(--bp-line-soft); }
.bp-about-wrap { display: grid; grid-template-columns: .95fr 1.05fr; gap: 54px; align-items: center; padding: 72px 24px; }
.bp-about-media { position: relative; padding: 12px; border: 1px solid var(--bp-line); background: rgba(219, 234, 254, .04); }
.bp-about-media img { width: 100%; border: 1px solid var(--bp-line-soft); }
.bp-about-cap { display: flex; align-items: center; gap: 14px; margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--bp-line); font-family: var(--bp-mono); font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--bp-white-mute); }
.bp-about-title { font-size: clamp(24px, 3vw, 34px); font-weight: 800; color: #fff; line-height: 1.25; margin-bottom: 16px; }
.bp-about-desc { color: var(--bp-white-mute); margin-bottom: 26px; }
.bp-about-chips { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 28px; }
.bp-about-chips li { border: 1px dashed var(--bp-line); border-radius: var(--bp-radius); padding: 14px 16px; }
.bp-about-chips strong { display: block; font-family: var(--bp-mono); font-size: 21px; color: var(--bp-amber); }
.bp-about-chips span { font-size: 12.5px; color: var(--bp-white-mute); }

/* ---------- Breadcrumb ---------- */
.bp-crumb { border-bottom: 1px solid var(--bp-line-soft); background: rgba(11, 31, 75, .5); }
.bp-crumb-line { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; padding-top: 11px; padding-bottom: 11px; font-family: var(--bp-mono); font-size: 12px; letter-spacing: .03em; }
.bp-crumb a { color: var(--bp-white-mute); transition: color .16s; }
.bp-crumb a:hover { color: var(--bp-amber); }
.bp-crumb-sep { color: var(--bp-amber); opacity: .7; }
.bp-crumb-now { color: #fff; font-weight: 600; }

/* ---------- Inner banner ---------- */
.bp-ibanner {
  background: var(--bp-blue);
  background-image:
    linear-gradient(rgba(219, 234, 254, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(219, 234, 254, .06) 1px, transparent 1px);
  background-size: 28px 28px;
  border-bottom: 1px solid var(--bp-line);
}
.bp-ibanner-in { padding: 46px 24px 40px; text-align: center; }
.bp-ibanner-kicker { font-family: var(--bp-mono); font-size: 11.5px; letter-spacing: .22em; color: var(--bp-amber); margin-bottom: 10px; }
.bp-ibanner-title { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; color: #fff; margin-bottom: 10px; }
.bp-ibanner-desc { max-width: 640px; margin: 0 auto; color: var(--bp-white-mute); font-size: 15px; }
.bp-ibanner .bp-dim { max-width: 320px; margin: 18px auto 0; }
.bp-ibanner .bp-dim span { background: var(--bp-blue); }

/* ---------- Category page ---------- */
.bp-page { padding-top: 54px; padding-bottom: 72px; }
.bp-page-head { max-width: 760px; margin: 0 auto 44px; text-align: center; }
.bp-page-h1 { font-size: clamp(26px, 3.2vw, 36px); font-weight: 800; color: #fff; margin-bottom: 12px; }
.bp-page-desc { color: var(--bp-white-mute); font-size: 15.5px; margin-bottom: 22px; }
.bp-page-acts { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }
.bp-other { margin-top: 56px; }
.bp-block-h {
  font-family: var(--bp-mono); font-size: 13px; font-weight: 700;
  letter-spacing: .2em; text-transform: uppercase; color: var(--bp-amber);
  padding-bottom: 12px; border-bottom: 1px solid var(--bp-line); margin-bottom: 18px;
}
.bp-other-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 24px; }
.bp-other-list a {
  display: flex; align-items: center; gap: 16px; padding: 15px 18px;
  border: 1px solid var(--bp-line); border-radius: var(--bp-radius);
  background: rgba(219, 234, 254, .03); transition: border-color .18s, background .18s;
}
.bp-other-list a:hover { border-color: var(--bp-amber); background: rgba(219, 234, 254, .07); }
.bp-other-no { font-family: var(--bp-mono); font-size: 12px; font-weight: 700; color: var(--bp-amber); flex: 0 0 auto; }
.bp-other-body { flex: 1; min-width: 0; }
.bp-other-body strong { display: block; color: #fff; font-size: 15.5px; font-weight: 700; }
.bp-other-body span { display: block; font-size: 13px; color: var(--bp-white-mute); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bp-other-go { color: var(--bp-amber); flex: 0 0 auto; }

/* ---------- List page ---------- */
.bp-list-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 40px; align-items: start; }
.bp-rows { display: grid; gap: 18px; margin-top: 26px; }
.bp-row { border: 1px solid var(--bp-line); border-radius: var(--bp-radius); background: rgba(219, 234, 254, .035); transition: border-color .2s; }
.bp-row:hover { border-color: var(--bp-amber); }
.bp-row-link { display: grid; grid-template-columns: 260px 1fr; gap: 0; height: 100%; }
.bp-row-media { display: block; border-right: 1px solid var(--bp-line-soft); }
.bp-row-media img { width: 100%; height: 100%; min-height: 170px; object-fit: cover; }
.bp-row-body { display: flex; flex-direction: column; gap: 8px; padding: 18px 20px; }
.bp-row-meta { display: flex; gap: 14px; font-family: var(--bp-mono); font-size: 11px; color: var(--bp-white-mute); }
.bp-row-meta i { font-style: normal; color: var(--bp-amber); letter-spacing: .08em; text-transform: uppercase; }
.bp-row-title { font-size: 17.5px; font-weight: 700; color: #fff; line-height: 1.4; }
.bp-row-desc { font-size: 14px; color: var(--bp-white-mute); }
.bp-row .bp-more { margin-top: auto; padding-top: 6px; }

.bp-pagi { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 26px; }
.bp-pagi button {
  min-width: 42px; height: 42px; padding: 0 12px;
  border: 1px solid var(--bp-line); border-radius: var(--bp-radius);
  font-family: var(--bp-mono); font-size: 13px; color: var(--bp-white-soft);
  transition: border-color .16s, color .16s, background .16s;
}
.bp-pagi button:hover:not(:disabled) { border-color: var(--bp-amber); color: var(--bp-amber); }
.bp-pagi button.is-cur { background: var(--bp-amber); border-color: var(--bp-amber); color: #0a1c42; font-weight: 700; }
.bp-pagi button:disabled { opacity: .4; cursor: not-allowed; }

/* ---------- Sidebar ---------- */
.bp-side { display: grid; gap: 20px; position: sticky; top: 96px; }
.bp-side-box { border: 1px solid var(--bp-line); border-radius: var(--bp-radius); background: rgba(219, 234, 254, .035); padding: 20px; }
.bp-side-h {
  font-family: var(--bp-mono); font-size: 12px; font-weight: 700;
  letter-spacing: .16em; text-transform: uppercase; color: var(--bp-amber);
  padding-bottom: 10px; border-bottom: 1px dashed var(--bp-line); margin-bottom: 14px;
}
.bp-side-hot { display: grid; gap: 14px; }
.bp-side-hot a { display: flex; gap: 12px; }
.bp-side-hot img { width: 84px; height: 62px; object-fit: cover; flex: 0 0 auto; border: 1px solid var(--bp-line-soft); }
.bp-side-hot-body strong { display: block; font-size: 13.5px; font-weight: 600; color: #fff; line-height: 1.45; }
.bp-side-hot time { display: block; margin-top: 4px; font-family: var(--bp-mono); font-size: 11px; color: var(--bp-white-mute); }
.bp-side-hot a:hover strong { color: var(--bp-amber); }
.bp-side-more { display: inline-block; margin-top: 16px; font-family: var(--bp-mono); font-size: 12px; color: var(--bp-amber); }
.bp-side-list { display: grid; gap: 4px; }
.bp-side-list a { display: flex; gap: 12px; align-items: baseline; padding: 9px 4px; border-bottom: 1px dashed var(--bp-line-soft); font-size: 14px; color: var(--bp-white-soft); transition: color .16s; }
.bp-side-list a:hover { color: var(--bp-amber); }
.bp-side-num { font-family: var(--bp-mono); font-size: 12px; color: var(--bp-amber); flex: 0 0 auto; }
.bp-side-note p { font-size: 14px; color: var(--bp-white-mute); margin-bottom: 16px; }

/* ---------- Show page ---------- */
.bp-article-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 40px; align-items: start; }
.bp-article-h1 { font-size: clamp(25px, 3vw, 34px); font-weight: 800; color: #fff; line-height: 1.3; margin-bottom: 16px; text-wrap: balance; }
.bp-article-meta {
  display: flex; align-items: center; flex-wrap: wrap; gap: 16px;
  padding: 12px 0; margin-bottom: 24px;
  border-top: 1px solid var(--bp-line); border-bottom: 1px dashed var(--bp-line);
  font-family: var(--bp-mono); font-size: 12px; color: var(--bp-white-mute);
}
.bp-article-meta b { color: #fff; font-weight: 600; }
.bp-article-figure { position: relative; margin-bottom: 26px; }
.bp-article-figure img { width: 100%; border: 1px solid var(--bp-line); }
.bp-article-dim { margin: 10px 0 0; }
.bp-article-body { font-size: 16.5px; color: var(--bp-white-soft); }
.bp-article-body p { margin-bottom: 18px; }
.bp-article-body h2, .bp-article-body h3 { color: #fff; font-weight: 700; margin: 26px 0 12px; line-height: 1.35; }
.bp-article-body h2 { font-size: 22px; border-left: 3px solid var(--bp-amber); padding-left: 12px; }
.bp-article-body h3 { font-size: 18px; }
.bp-article-body img { border: 1px solid var(--bp-line); margin: 8px 0 18px; }
.bp-article-body ul, .bp-article-body ol { margin: 0 0 18px 22px; }
.bp-article-body li { margin-bottom: 8px; }
.bp-article-body a { color: var(--bp-amber); text-decoration: underline; text-underline-offset: 3px; }
.bp-article-body strong { color: #fff; }
.bp-article-tags { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin-top: 26px; padding-top: 18px; border-top: 1px dashed var(--bp-line); }
.bp-tag-label { font-family: var(--bp-mono); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--bp-white-mute); }
.bp-tag {
  padding: 4px 12px; border: 1px solid var(--bp-line); border-radius: 2px;
  font-family: var(--bp-mono); font-size: 12px; color: var(--bp-white-soft);
  transition: border-color .16s, color .16s;
}
.bp-tag:hover { border-color: var(--bp-amber); color: var(--bp-amber); }

.bp-switcher { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 34px; }
.bp-switcher-cell { border: 1px solid var(--bp-line); border-radius: var(--bp-radius); padding: 16px 18px; background: rgba(219, 234, 254, .03); }
.bp-switcher-label { display: block; font-family: var(--bp-mono); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--bp-amber); margin-bottom: 8px; }
.bp-switcher-link { font-size: 14.5px; font-weight: 600; color: #fff; line-height: 1.45; }
.bp-switcher-link:hover { color: var(--bp-amber); }
.bp-switcher-next { text-align: right; }
.bp-switcher-empty { font-size: 13.5px; color: var(--bp-white-mute); font-style: italic; }
.bp-related { margin-top: 44px; }

/* ---------- 404 ---------- */
.bp-404 { padding: 90px 0 100px; }
.bp-404-in { max-width: 640px; margin: 0 auto; text-align: center; }
.bp-404-kicker { font-family: var(--bp-mono); font-size: 12px; letter-spacing: .22em; color: var(--bp-amber); margin-bottom: 10px; }
.bp-404-no { font-family: var(--bp-mono); font-size: clamp(80px, 14vw, 150px); font-weight: 700; line-height: 1; color: #fff; letter-spacing: .04em; }
.bp-404-dim { max-width: 340px; margin: 10px auto 22px; }
.bp-404-dim span { background: var(--bp-ink); color: var(--bp-amber); }
.bp-404-title { font-size: clamp(22px, 3vw, 30px); font-weight: 800; color: #fff; margin-bottom: 14px; }
.bp-404-desc { color: var(--bp-white-mute); margin-bottom: 28px; }
.bp-404-acts { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }

/* ---------- Friend links ---------- */
.bp-flink { padding: 56px 0 48px; border-top: 1px solid var(--bp-line-soft); background: rgba(10, 28, 66, .5); }
.bp-flink-head { margin-bottom: 26px; }
.bp-flink-title {
  font-family: var(--bp-mono); font-size: 13px; font-weight: 700;
  letter-spacing: .2em; text-transform: uppercase; color: var(--bp-amber);
}
.bp-flink-note { margin-top: 6px; font-size: 14px; color: var(--bp-white-mute); }
.bp-flink-row { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.bp-flink-chip {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 18px 12px; text-align: center;
  border: 1px dashed var(--bp-line); border-radius: var(--bp-radius);
  font-size: 13px; font-weight: 600; color: var(--bp-white-soft);
  transition: border-color .18s, color .18s;
}
.bp-flink-chip:hover { border-color: var(--bp-amber); color: #fff; }
.bp-flink-logo { width: 56px; height: 56px; border-radius: 50%; border: 1px solid var(--bp-line); object-fit: cover; }

/* ---------- Footer ---------- */
.bp-footer { background: var(--bp-deep); border-top: 1px solid var(--bp-line); }
.bp-foot-top { display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; padding: 52px 0 36px; align-items: center; }
.bp-fbrand-img { width: 210px; height: auto; }
.bp-foot-slogan { color: var(--bp-white-mute); font-size: 14.5px; }
.bp-foot-grid { display: grid; grid-template-columns: 1.1fr .9fr 1.1fr; gap: 36px; padding: 36px 0; border-top: 1px solid var(--bp-line-soft); }
.bp-foot-h {
  font-family: var(--bp-mono); font-size: 12px; font-weight: 700;
  letter-spacing: .16em; text-transform: uppercase; color: var(--bp-amber); margin-bottom: 16px;
}
.bp-foot-list { display: grid; gap: 9px; }
.bp-foot-list a { font-size: 14.5px; color: var(--bp-white-mute); transition: color .16s; }
.bp-foot-list a:hover { color: var(--bp-amber); }
.bp-foot-cats { grid-template-columns: 1fr 1fr; column-gap: 24px; }
.bp-foot-info { display: grid; gap: 10px; }
.bp-foot-info li { display: grid; grid-template-columns: 96px 1fr; gap: 10px; font-size: 14px; }
.bp-foot-key { font-family: var(--bp-mono); font-size: 11.5px; letter-spacing: .06em; color: var(--bp-amber); padding-top: 2px; }
.bp-foot-val { color: var(--bp-white-mute); }
.bp-foot-base { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding: 20px 0 26px; border-top: 1px solid var(--bp-line-soft); }
.bp-foot-copy { font-size: 13px; color: var(--bp-white-mute); }
.bp-foot-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; font-family: var(--bp-mono); font-size: 12px; color: var(--bp-white-mute); }
.bp-foot-sitemap { color: var(--bp-amber); border-bottom: 1px dotted var(--bp-amber); }
.bp-foot-sitemap:hover { color: #ffd34d; border-bottom-color: #ffd34d; }

/* ---------- Back to top ---------- */
.bp-top-btn {
  position: fixed; right: 22px; bottom: 22px; z-index: 70;
  width: 46px; height: 46px; border-radius: 50%;
  border: 1px solid var(--bp-amber); color: var(--bp-amber);
  background: rgba(10, 28, 66, .9); font-size: 18px;
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: opacity .22s, transform .22s, visibility .22s;
}
.bp-top-btn.is-show { opacity: 1; visibility: visible; transform: translateY(0); }
.bp-top-btn:hover { background: var(--bp-amber); color: #0a1c42; }

/* ---------- Reveal ---------- */
html.bp-js .bp-reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
html.bp-js .bp-reveal.is-in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1180px) {
  .bp-spec-title { white-space: normal; }
}

@media (max-width: 1023px) {
  .bp-nav { display: none; }
  .bp-burger { display: flex; }
  .bp-hero-in { grid-template-columns: 1fr; gap: 40px; }
  .bp-plates { grid-template-columns: repeat(2, 1fr); }
  .bp-spot { grid-template-columns: 1fr; }
  .bp-plate-main { grid-row: auto; }
  .bp-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .bp-list-wrap, .bp-article-wrap { grid-template-columns: 1fr; }
  .bp-side { position: static; }
  .bp-about-wrap { grid-template-columns: 1fr; gap: 36px; }
  .bp-foot-top { grid-template-columns: 1fr; gap: 22px; }
  .bp-foot-grid { grid-template-columns: 1fr 1fr; }
  .bp-flink-row { grid-template-columns: repeat(3, 1fr); }
  .bp-other-list { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .bp-shell { padding: 0 16px; }
  .bp-coord-in span:nth-child(2) { display: none; }
  .bp-brand-img { width: 158px; }
  .bp-section { padding: 52px 0; }
  .bp-hero { padding: 44px 0 54px; }
  .bp-hero-acts .bp-btn { width: 100%; justify-content: center; }
  .bp-hero-stats { flex-direction: column; }
  .bp-hero-stats li { border-left: 0; border-top: 1px dashed var(--bp-line); }
  .bp-hero-stats li:first-child { border-top: 0; }
  .bp-plates { grid-template-columns: 1fr; }
  .bp-grid-4 { grid-template-columns: 1fr; }
  .bp-row-link { grid-template-columns: 1fr; }
  .bp-row-media { border-right: 0; border-bottom: 1px solid var(--bp-line-soft); }
  .bp-row-media img { min-height: 180px; max-height: 220px; }
  .bp-switcher { grid-template-columns: 1fr; }
  .bp-sheet-list { grid-template-columns: 1fr; }
  .bp-flink-row { grid-template-columns: repeat(2, 1fr); }
  .bp-foot-grid { grid-template-columns: 1fr; }
  .bp-foot-cats { grid-template-columns: 1fr 1fr; }
  .bp-faq-a { padding-left: 20px; }
  .bp-about-chips { grid-template-columns: 1fr; }
}