/* roulang page: index */
:root {
  --bg: #06101d;
  --bg-2: #0a1830;
  --bg-3: #102445;
  --ink: #e8f2ff;
  --muted: #b7c8e2;
  --line: rgba(140, 196, 255, 0.22);
  --cyan: #67e7ff;
  --blue: #3d7dff;
  --blue-2: #1aa7ff;
  --glass: rgba(10, 24, 48, 0.62);
  --glass-2: rgba(18, 40, 78, 0.72);
  --radius: 18px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --glow: 0 0 0 1px rgba(120, 220, 255, 0.35), 0 0 28px rgba(61, 125, 255, 0.45);
  --max: 1160px;
  --pad: 22px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Be Vietnam Pro", sans-serif;
  background: radial-gradient(1200px 500px at 80% -10%, rgba(61, 125, 255, 0.22), transparent 55%), var(--bg);
  color: var(--ink);
  line-height: 1.7;
  font-size: 16px;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font-family: inherit; color: inherit; }
button { cursor: pointer; }
::selection { background: rgba(61, 125, 255, 0.45); }
.container { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.skip {
  position: absolute; left: 12px; top: -40px; background: #fff; color: #04101f; padding: 8px 12px; z-index: 20;
}
.skip:focus { top: 8px; }
.site-header {
  position: sticky; top: 0; z-index: 30;
  background: rgba(6, 16, 29, 0.88);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}
.nav-wrap {
  min-height: 70px;
  display: flex; align-items: center; gap: 18px;
}
.logo { display: flex; flex-direction: column; line-height: 1.05; min-width: 168px; }
.logo-mark { font-weight: 800; letter-spacing: 0.04em; font-size: 20px; color: white; }
.logo-sub { color: var(--cyan); font-size: 12px; font-weight: 600; }
.nav-links { display: flex; align-items: center; gap: 6px; flex: 1; }
.nav-links a {
  color: var(--muted); font-size: 13px; font-weight: 600; padding: 8px 8px; border-radius: 999px;
}
.nav-links a:hover, .nav-links a:focus-visible { color: white; background: rgba(103, 231, 255, 0.08); }
.nav-links a.active { color: #04121f; background: linear-gradient(135deg, var(--cyan), #9ad7ff); }
.nav-tools { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.search { display: flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.04); border: 1px solid var(--line); border-radius: 999px; padding: 6px 10px; }
.search input { background: transparent; border: 0; outline: 0; width: 168px; font-size: 13px; }
.search button { background: transparent; border: 0; color: var(--cyan); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 999px; padding: 11px 18px; border: 1px solid transparent; font-weight: 700; transition: 0.2s ease;
}
.btn-glow {
  background: linear-gradient(135deg, #3d7dff, #19c8ff);
  color: white; box-shadow: var(--glow);
}
.btn-glow:hover { transform: translateY(-2px); filter: brightness(1.06); }
.btn-glow:active { transform: translateY(0); }
.btn-ghost { background: rgba(255,255,255,0.04); border-color: var(--line); color: white; }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.btn:focus-visible, .nav-links a:focus-visible, .search input:focus-visible, .menu-toggle:focus-visible, summary:focus-visible {
  outline: 2px solid var(--cyan); outline-offset: 2px;
}
.menu-toggle, .drawer { display: none; }
.hero { position: relative; min-height: 680px; display: flex; align-items: flex-end; overflow: hidden; }
.hero-photo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero-shade {
  position: relative; z-index: 1; width: 100%;
  background: linear-gradient(180deg, rgba(5, 12, 24, 0.2) 0%, rgba(5, 12, 24, 0.55) 42%, rgba(5, 12, 24, 0.92) 100%);
  padding: 72px 0 28px;
}
.eyebrow { color: var(--cyan); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; font-size: 12px; margin-bottom: 10px; }
h1 { font-size: 54px; line-height: 1.12; margin: 0 0 16px; max-width: 820px; }
.lead { max-width: 860px; color: #d5e4f8; font-size: 17px; margin: 0 0 22px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 28px; }
.series-bar {
  display: flex; gap: 10px; overflow: auto; padding-bottom: 6px;
  background: rgba(8, 18, 36, 0.55); border: 1px solid var(--line); backdrop-filter: blur(12px);
  border-radius: 16px; padding: 10px;
}
.series-bar a {
  flex: 0 0 auto; padding: 10px 14px; border-radius: 12px; background: rgba(255,255,255,0.04); border: 1px solid transparent; font-weight: 600; font-size: 14px;
}
.series-bar a:hover { border-color: rgba(103, 231, 255, 0.5); color: var(--cyan); }
.section { padding: 74px 0; }
.section-alt { background: linear-gradient(180deg, rgba(16, 36, 69, 0.35), rgba(6, 16, 29, 0)); }
.section-head { display: flex; justify-content: space-between; gap: 24px; align-items: flex-end; margin-bottom: 22px; }
.section-head h2, .block-title { font-size: 32px; line-height: 1.25; margin: 0 0 8px; }
.section p, .prose { color: var(--muted); }
.kicker { color: var(--cyan); font-size: 13px; font-weight: 700; margin: 0 0 6px; }
.metrics { padding-top: 34px; }
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.metric {
  background: var(--glass); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px;
  box-shadow: var(--shadow); backdrop-filter: blur(10px);
}
.metric b { display: block; font-size: 30px; color: white; }
.metric span { color: var(--muted); font-size: 14px; }
.ticker { margin-top: 16px; overflow: hidden; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.ticker-track { display: flex; gap: 28px; white-space: nowrap; padding: 10px 0; animation: slide 28s linear infinite; color: #d5e6ff; }
@keyframes slide { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.split { display: grid; grid-template-columns: 1.4fr 0.8fr; gap: 22px; }
.feed-item, .rank, .bento-card, .topic-card, .tree-group, .compare-col, .update-row, .mile, .news-row, .quote, .shield, .qa, .faq-item, .form-card, .sub-copy {
  background: var(--glass); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); backdrop-filter: blur(12px);
}
.feed { display: flex; flex-direction: column; gap: 14px; }
.feed-item { display: grid; grid-template-columns: 168px 1fr; gap: 14px; padding: 12px; }
.feed-item img, .news-row img, .sub-visual img { width: 100%; height: 120px; object-fit: cover; border-radius: 12px; }
.feed-item h3, .rank h3, .news-row h3, .topic-card h3, .bento-card h3 { margin: 0 0 6px; font-size: 18px; }
.tag, .badge { display: inline-flex; align-items: center; gap: 6px; border-radius: 999px; padding: 3px 8px; font-size: 12px; font-weight: 700; color: #d8f7ff; background: rgba(103, 231, 255, 0.1); border: 1px solid rgba(103, 231, 255, 0.2); }
.hot { padding: 8px; }
.rank { display: grid; grid-template-columns: 46px 1fr; gap: 8px; padding: 12px; margin-bottom: 10px; }
.rank:hover, .feed-item:hover, .bento-card:hover, .topic-card:hover, .news-row:hover { transform: translateY(-3px); border-color: rgba(103, 231, 255, 0.45); transition: 0.2s ease; }
.rank i { font-style: normal; font-weight: 800; color: var(--cyan); font-size: 20px; }
.bento { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 14px; }
.bento-card { padding: 18px; min-height: 210px; }
.bento-card.wide { grid-column: span 1; background: linear-gradient(180deg, rgba(61,125,255,0.18), rgba(10,24,48,0.7)); }
.bento-card p, .topic-card p, .tree-group p, .compare-col p, .quote p, .shield p, .qa p { color: var(--muted); }
.h-scroll { display: flex; gap: 14px; overflow-x: auto; padding-bottom: 8px; scroll-snap-type: x mandatory; }
.topic-card { min-width: 280px; scroll-snap-align: start; padding: 16px; }
.topic-card img { height: 120px; width: 100%; object-fit: cover; border-radius: 12px; margin-bottom: 10px; }
.tree { display: grid; grid-template-columns: 280px 1fr; gap: 18px; }
.tree-group { padding: 16px 18px; }
.tree a { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; border-bottom: 1px solid rgba(255,255,255,0.06); color: #e7f2ff; font-weight: 600; }
.tree a:hover { color: var(--cyan); }
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.compare-col { padding: 18px; }
.compare-col img { height: 180px; width: 100%; object-fit: cover; border-radius: 14px; margin-bottom: 12px; }
.delta { display: flex; justify-content: space-between; gap: 8px; padding: 8px 0; border-top: 1px solid rgba(255,255,255,0.08); }
.update-list, .news-list { display: flex; flex-direction: column; gap: 12px; }
.update-row, .news-row { display: grid; grid-template-columns: 120px 1fr auto; gap: 14px; align-items: center; padding: 14px; }
.news-row { grid-template-columns: 180px 1fr; }
.timeline { position: relative; margin-left: 12px; }
.timeline:before { content: ""; position: absolute; left: 8px; top: 0; bottom: 0; width: 2px; background: linear-gradient(var(--cyan), transparent); }
.mile { margin: 0 0 14px 28px; padding: 16px 18px; position: relative; }
.mile:before { content: ""; width: 12px; height: 12px; border-radius: 50%; background: var(--cyan); position: absolute; left: -26px; top: 22px; box-shadow: 0 0 12px var(--cyan); }
.media-band { position: relative; overflow: hidden; }
.media-band .bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.28; }
.media-grid { position: relative; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 14px; }
.quote { padding: 18px; }
.shield-grid, .qa-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.shield, .qa, .faq-item { padding: 16px 18px; }
.faq-item summary { cursor: pointer; font-weight: 700; font-size: 18px; }
.faq-item p { margin-bottom: 0; }
.sub-banner { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 18px; align-items: center; }
.sub-visual img { width: 100%; height: 280px; object-fit: cover; border-radius: 20px; }
.form-card { padding: 22px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
label { display: flex; flex-direction: column; gap: 6px; font-size: 14px; color: #d7e6f8; font-weight: 600; }
input, select, textarea {
  background: rgba(255,255,255,0.04); border: 1px solid var(--line); border-radius: 12px; padding: 12px; outline: none;
}
textarea { min-height: 120px; resize: vertical; }
input:focus, select:focus, textarea:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(103, 231, 255, 0.15); }
.full { grid-column: 1 / -1; }
.notice { display: none; margin-top: 12px; color: #b8ffe4; }
.more-link { color: var(--cyan); font-weight: 700; }
.site-footer { border-top: 1px solid var(--line); padding: 36px 0 24px; background: #050c18; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 18px; }
.site-footer a { display: block; color: var(--muted); padding: 4px 0; }
.site-footer a:hover { color: white; }
.copy { color: var(--muted); font-size: 13px; margin-top: 18px; }
@media (max-width: 1024px) {
  .nav-links { display: none; }
  .menu-toggle { display: inline-flex; background: transparent; border: 1px solid var(--line); color: white; border-radius: 10px; padding: 8px 10px; }
  .drawer.open { display: flex; flex-direction: column; padding: 0 16px 16px; }
  .drawer a { padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,0.06); }
  h1 { font-size: 40px; }
  .metric-grid, .bento, .tree, .compare, .shield-grid, .qa-grid, .sub-banner, .media-grid, .foot-grid, .split { grid-template-columns: 1fr 1fr; }
  .bento-card.wide { grid-column: auto; }
}
@media (max-width: 768px) {
  .metric-grid, .bento, .tree, .compare, .shield-grid, .qa-grid, .sub-banner, .media-grid, .foot-grid, .split, .form-grid { grid-template-columns: 1fr; }
  .feed-item, .update-row, .news-row { grid-template-columns: 1fr; }
  .section-head { flex-direction: column; align-items: flex-start; }
  .search input { width: 110px; }
  h1 { font-size: 34px; }
}
@media (max-width: 520px) {
  .hero { min-height: 0; }
  .nav-tools .btn-glow span { display: none; }
  h1 { font-size: 30px; }
  .container { width: min(var(--max), calc(100% - 20px)); }
  .section { padding: 54px 0; }
}
@media (prefers-reduced-motion: reduce) {
  .ticker-track { animation: none; }
}

/* roulang page: category2 */
:root {
 --bg: #06101d;
 --bg-2: #0a1830;
 --bg-3: #102445;
 --ink: #e8f2ff;
 --muted: #b7c8e2;
 --line: rgba(140, 196, 255, 0.22);
 --cyan: #67e7ff;
 --blue: #3d7dff;
 --blue-2: #1aa7ff;
 --glass: rgba(10, 24, 48, 0.62);
 --glass-2: rgba(18, 40, 78, 0.72);
 --radius: 18px;
 --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
 --glow: 0 0 0 1px rgba(120, 220, 255, 0.35), 0 0 28px rgba(61, 125, 255, 0.45);
 --max: 1160px;
 --pad: 22px;
}
/* roulang page: index */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
 margin: 0;
 font-family: "Be Vietnam Pro", sans-serif;
 background: radial-gradient(1200px 500px at 80% -10%, rgba(61, 125, 255, 0.22), transparent 55%), var(--bg);
 color: var(--ink);
 line-height: 1.7;
 font-size: 16px;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font-family: inherit; color: inherit; }
button { cursor: pointer; }
.container { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.site-header {
 position: sticky; top: 0; z-index: 30;
 background: rgba(6, 16, 29, 0.88);
 border-bottom: 1px solid var(--line);
 backdrop-filter: blur(16px);
}
.nav-wrap {
 min-height: 70px;
 display: flex; align-items: center; gap: 18px;
 position: relative;
}
.logo { display: flex; flex-direction: column; line-height: 1.05; min-width: 168px; }
.logo-mark { font-weight: 800; letter-spacing: 0.04em; font-size: 20px; color: white; }
.logo-sub { color: var(--cyan); font-size: 12px; font-weight: 600; }
.nav-links { display: flex; align-items: center; gap: 6px; flex: 1; }
.nav-links a {
 color: var(--muted); font-size: 13px; font-weight: 600; padding: 8px 8px; border-radius: 999px;
}
.nav-links a:hover, .nav-links a:focus-visible { color: white; background: rgba(103, 231, 255, 0.08); }
.nav-links a.active { color: #04121f; background: linear-gradient(135deg, var(--cyan), #9ad7ff); }
.nav-tools { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.search { display: flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.04); border: 1px solid var(--line); border-radius: 999px; padding: 6px 10px; }
.search input { background: transparent; border: 0; outline: 0; width: 168px; font-size: 13px; }
.search button { background: transparent; border: 0; color: var(--cyan); }
.btn {
 display: inline-flex; align-items: center; justify-content: center; gap: 8px;
 border-radius: 999px; padding: 11px 18px; border: 1px solid transparent; font-weight: 700; transition: 0.2s ease;
}
.btn-glow {
 background: linear-gradient(135deg, #3d7dff, #19c8ff);
 color: white; box-shadow: var(--glow);
}
.btn-glow:hover { transform: translateY(-2px); filter: brightness(1.06); }
.btn-glow:active { transform: translateY(0); }
.btn-ghost { background: rgba(255,255,255,0.04); border-color: var(--line); color: white; }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.btn:focus-visible, .nav-links a:focus-visible, .search input:focus-visible, .menu-toggle:focus-visible, summary:focus-visible, .tag-btn:focus-visible {
 outline: 2px solid var(--cyan); outline-offset: 2px;
}
.menu-toggle {
 display: none;
 width: 42px; height: 42px; border-radius: 12px;
 background: rgba(255,255,255,0.04); border: 1px solid var(--line); color: white;
}
.section { padding: 74px 0; }
.section-alt { background: linear-gradient(180deg, rgba(16, 36, 69, 0.35), rgba(6, 16, 29, 0)); }
.section-head { display: flex; justify-content: space-between; gap: 24px; align-items: flex-end; margin-bottom: 22px; }
.section-head h2, .block-title { font-size: 32px; line-height: 1.25; margin: 0 0 8px; }
.section p, .prose { color: var(--muted); }
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.feed-item, .rank, .bento-card, .topic-card, .tree-group, .compare-col, .update-row, .mile, .news-row, .quote, .shield, .qa, .faq-item, .form-card, .sub-copy {
 background: var(--glass); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); backdrop-filter: blur(12px);
}
.feed-item { display: grid; grid-template-columns: 168px 1fr; gap: 14px; padding: 12px; }
.feed-item img, .news-row img, .sub-visual img { width: 100%; height: 120px; object-fit: cover; border-radius: 12px; }
.feed-item h3, .rank h3, .news-row h3, .topic-card h3, .bento-card h3 { margin: 0 0 6px; font-size: 18px; }
.tag, .badge { display: inline-flex; align-items: center; gap: 6px; border-radius: 999px; padding: 3px 8px; font-size: 12px; font-weight: 700; color: #d8f7ff; background: rgba(103, 231, 255, 0.1); border: 1px solid rgba(103, 231, 255, 0.2); }
.rank:hover, .feed-item:hover, .bento-card:hover, .topic-card:hover, .news-row:hover { transform: translateY(-3px); border-color: rgba(103, 231, 255, 0.45); transition: 0.2s ease; }
.bento-card { padding: 18px; min-height: 210px; }
.bento-card.wide { grid-column: span 1; background: linear-gradient(180deg, rgba(61,125,255,0.18), rgba(10,24,48,0.7)); }
.bento-card p, .topic-card p, .tree-group p, .compare-col p, .quote p, .shield p, .qa p { color: var(--muted); }
.topic-card { min-width: 280px; scroll-snap-align: start; padding: 16px; }
.topic-card img { height: 120px; width: 100%; object-fit: cover; border-radius: 12px; margin-bottom: 10px; }
.tree a { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; border-bottom: 1px solid rgba(255,255,255,0.06); color: #e7f2ff; font-weight: 600; }
.tree a:hover { color: var(--cyan); }
.compare-col { padding: 18px; }
.compare-col img { height: 180px; width: 100%; object-fit: cover; border-radius: 14px; margin-bottom: 12px; }
.delta { display: flex; justify-content: space-between; gap: 8px; padding: 8px 0; border-top: 1px solid rgba(255,255,255,0.08); color: var(--ink); font-weight: 600; font-size: 14px; }
.rank { padding: 18px; }
.num { display: block; font-size: 34px; line-height: 1.1; font-weight: 800; color: white; margin: 10px 0 6px; }
.eyebrow { color: var(--cyan); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; font-size: 12px; margin-bottom: 10px; }
.lead { max-width: 640px; color: #d5e4f8; font-size: 17px; margin: 0 0 22px; }
.ios-mast { position: relative; overflow: hidden; }
.mast-photo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.mast-shade {
 position: relative; z-index: 1;
 background: linear-gradient(90deg, rgba(5,12,24,0.92) 0%, rgba(5,12,24,0.78) 48%, rgba(5,12,24,0.55) 100%);
 padding: 42px 0 36px;
}
.mast-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 28px; align-items: center; }
.glass-panel { background: var(--glass-2); border: 1px solid var(--line); border-radius: 24px; box-shadow: var(--shadow); overflow: hidden; backdrop-filter: blur(14px); }
.glass-panel img { width: 100%; height: 210px; object-fit: cover; }
.stat-list { display: grid; grid-template-columns: repeat(3, 1fr); }
.stat-list div { padding: 14px; border-top: 1px solid var(--line); }
.stat-list strong { display: block; color: white; font-size: 15px; }
.stat-list span { color: var(--muted); font-size: 12px; }
.mast-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.matrix-grid { display: grid; grid-template-columns: 1.35fr 0.85fr; gap: 14px; }
.stack { display: grid; gap: 14px; }
.bento-card ul, .shield ul { margin: 10px 0 0; padding-left: 18px; color: var(--muted); }
.tree-group { padding: 18px; }
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.topic-scroller { display: flex; gap: 14px; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 8px; }
.topic-scroller::-webkit-scrollbar { height: 8px; }
.topic-scroller::-webkit-scrollbar-thumb { background: rgba(103,231,255,0.35); border-radius: 99px; }
.mile-list { display: grid; gap: 12px; position: relative; }
.mile { display: grid; grid-template-columns: 120px 1fr; gap: 16px; padding: 16px 18px; }
.mile time { color: var(--cyan); font-weight: 800; }
.update-row, .news-row { display: grid; grid-template-columns: 148px 1fr auto; gap: 14px; align-items: center; padding: 12px; margin-bottom: 12px; }
.news-list { display: grid; gap: 12px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-btn { background: rgba(255,255,255,0.04); color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 7px 12px; font-weight: 700; font-size: 13px; }
.tag-btn.is-on, .tag-btn:hover { color: #04121f; background: linear-gradient(135deg, var(--cyan), #9ad7ff); border-color: transparent; }
.assure-grid { display: grid; grid-template-columns: 1.2fr 0.8fr 0.9fr; gap: 14px; }
.shield, .qa { padding: 18px; }
.faq-list { display: grid; gap: 10px; }
.faq-item { padding: 14px 16px; }
.faq-item summary { cursor: pointer; font-weight: 700; list-style: none; display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:after { content: "+"; color: var(--cyan); font-size: 20px; }
.faq-item[open] summary:after { content: "–"; }
.faq-item[open] { border-color: rgba(103,231,255,0.45); }
.form-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 18px; align-items: start; }
.form-card { padding: 18px; }
.fields { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.field { display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 700; color: #d5e7ff; }
.field.full { grid-column: 1 / -1; }
.field input, .field select, .field textarea {
 background: #0c1b33; border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; font-weight: 500;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--cyan); box-shadow: var(--glow); outline: none; }
.field option { background: #0c1b33; color: white; }
.form-note { margin-top: 12px; color: var(--cyan); font-weight: 700; }
.site-footer { border-top: 1px solid var(--line); padding: 42px 0 28px; background: #040c18; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 0.7fr 0.8fr 0.9fr; gap: 22px; }
.foot-grid strong { display: block; margin-bottom: 8px; }
.foot-grid a { display: block; color: var(--muted); padding: 4px 0; font-weight: 600; }
.foot-grid a:hover { color: var(--cyan); }
.copy { color: var(--muted); font-size: 13px; margin: 22px 0 0; border-top: 1px solid rgba(255,255,255,0.06); padding-top: 16px; }
.kicker { color: var(--muted); font-size: 13px; }
@media (max-width: 1024px) {
 .nav-links {
  display: none; position: absolute; top: 70px; left: 0; right: 0;
  flex-direction: column; align-items: stretch; padding: 10px;
  background: rgba(6,16,29,0.97); border-bottom: 1px solid var(--line);
 }
 .nav-links.is-open { display: flex; }
 .nav-links a { padding: 12px; }
 .menu-toggle { display: inline-flex; align-items: center; justify-content: center; }
 .metric-grid, .assure-grid { grid-template-columns: 1fr 1fr; }
 .mast-grid, .matrix-grid, .form-grid, .foot-grid { grid-template-columns: 1fr 1fr; }
 .search input { width: 120px; }
}
@media (max-width: 768px) {
 .section { padding: 52px 0; }
 .section-head, .mile, .update-row, .news-row { display: grid; grid-template-columns: 1fr; }
 .section-head h2 { font-size: 26px; }
 .mast-grid, .matrix-grid, .compare-grid, .form-grid, .foot-grid, .fields, .metric-grid, .assure-grid { grid-template-columns: 1fr; }
 .search { display: none; }
 .stat-list { grid-template-columns: 1fr; }
 .nav-tools .btn-glow { display: none; }
}
@media (max-width: 520px) {
 .logo { min-width: 0; }
 .mast-actions .btn, .form-card .btn { width: 100%; }
 .lead { font-size: 15px; }
 .num { font-size: 28px; }
 .container { width: min(var(--max), calc(100% - 20px)); }
}

/* roulang page: category1 */
:root {
 --bg: #06101d;
 --bg-2: #0a1830;
 --bg-3: #102445;
 --ink: #e8f2ff;
 --muted: #b7c8e2;
 --line: rgba(140, 196, 255, 0.22);
 --cyan: #67e7ff;
 --blue: #3d7dff;
 --blue-2: #1aa7ff;
 --glass: rgba(10, 24, 48, 0.62);
 --glass-2: rgba(18, 40, 78, 0.72);
 --radius: 18px;
 --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
 --glow: 0 0 0 1px rgba(120, 220, 255, 0.35), 0 0 28px rgba(61, 125, 255, 0.45);
 --max: 1160px;
 --pad: 22px;
}
/* roulang page: android */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
 margin: 0;
 font-family: "Be Vietnam Pro", sans-serif;
 background: radial-gradient(1200px 500px at 80% -10%, rgba(61, 125, 255, 0.22), transparent 55%), var(--bg);
 color: var(--ink);
 line-height: 1.7;
 font-size: 16px;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font-family: inherit; color: inherit; }
button { cursor: pointer; }
p { margin: 0 0 10px; }
h1, h2, h3, h4 { margin: 0; font-weight: 800; letter-spacing: -0.02em; }
.container { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.sr-only {
 position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
 overflow: hidden; clip: rect(0, 0, 0, 0); border: 0;
}
.site-header {
 position: sticky; top: 0; z-index: 30;
 background: rgba(6, 16, 29, 0.88);
 border-bottom: 1px solid var(--line);
 backdrop-filter: blur(16px);
}
.nav-wrap {
 min-height: 70px;
 display: flex; align-items: center; gap: 18px;
}
.logo { display: flex; flex-direction: column; line-height: 1.05; min-width: 168px; }
.logo-mark { font-weight: 800; letter-spacing: 0.04em; font-size: 20px; color: white; }
.logo-sub { color: var(--cyan); font-size: 12px; font-weight: 600; }
.nav-links { display: flex; align-items: center; gap: 6px; flex: 1; flex-wrap: wrap; }
.nav-links a {
 color: var(--muted); font-size: 13px; font-weight: 600; padding: 8px 8px; border-radius: 999px;
}
.nav-links a:hover, .nav-links a:focus-visible { color: white; background: rgba(103, 231, 255, 0.08); }
.nav-links a.active { color: #04121f; background: linear-gradient(135deg, var(--cyan), #9ad7ff); }
.nav-tools { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.search { display: flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.04); border: 1px solid var(--line); border-radius: 999px; padding: 6px 10px; }
.search input { background: transparent; border: 0; outline: 0; width: 168px; font-size: 13px; }
.search button { background: transparent; border: 0; color: var(--cyan); }
.btn {
 display: inline-flex; align-items: center; justify-content: center; gap: 8px;
 border-radius: 999px; padding: 11px 18px; border: 1px solid transparent; font-weight: 700; transition: 0.2s ease;
}
.btn-glow {
 background: linear-gradient(135deg, #3d7dff, #19c8ff);
 color: white; box-shadow: var(--glow);
}
.btn-glow:hover { transform: translateY(-2px); filter: brightness(1.06); }
.btn-glow:active { transform: translateY(0); }
.btn-ghost { background: rgba(255,255,255,0.04); border-color: var(--line); color: white; }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.btn:focus-visible, .nav-links a:focus-visible, .search input:focus-visible, .menu-toggle:focus-visible, summary:focus-visible, .chip:focus-visible {
 outline: 2px solid var(--cyan); outline-offset: 2px;
}
.menu-toggle, .drawer { display: none; }
.menu-toggle {
 width: 42px; height: 42px; border-radius: 12px;
 border: 1px solid var(--line); background: rgba(255,255,255,0.04); color: white;
 align-items: center; justify-content: center;
}
.drawer { border-top: 1px solid var(--line); padding: 10px 16px 16px; background: rgba(6, 16, 29, 0.98); }
.drawer a { display: block; padding: 10px 12px; border-radius: 12px; color: var(--muted); font-weight: 600; }
.drawer a:hover { color: white; background: rgba(103, 231, 255, 0.08); }
.drawer a.active { color: #04121f; background: linear-gradient(135deg, var(--cyan), #9ad7ff); }
.section { padding: 74px 0; }
.section-alt { background: linear-gradient(180deg, rgba(16, 36, 69, 0.35), rgba(6, 16, 29, 0)); }
.section-head { display: flex; justify-content: space-between; gap: 24px; align-items: flex-end; margin-bottom: 22px; }
.section-head h2, .block-title { font-size: 32px; line-height: 1.25; margin: 0 0 8px; }
.section p, .prose { color: var(--muted); }
.eyebrow { color: var(--cyan); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; font-size: 12px; margin-bottom: 10px; }
.lead { max-width: 640px; color: #d5e4f8; font-size: 17px; margin: 0 0 22px; }
.tag, .badge { display: inline-flex; align-items: center; gap: 6px; border-radius: 999px; padding: 3px 8px; font-size: 12px; font-weight: 700; color: #d8f7ff; background: rgba(103, 231, 255, 0.1); border: 1px solid rgba(103, 231, 255, 0.2); }
.page-intro { padding: 34px 0 20px; }
.intro-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 28px; align-items: start; }
.page-intro h1 { font-size: clamp(34px, 4.6vw, 52px); line-height: 1.12; margin: 0 0 14px; max-width: 640px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 18px; }
.mini-points { display: flex; flex-wrap: wrap; gap: 8px; }
.mini-points span { color: #d5e7fb; font-size: 13px; font-weight: 600; border: 1px solid var(--line); border-radius: 999px; padding: 6px 10px; background: rgba(255,255,255,0.03); }
.pick-board { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.pick-card, .metric, .topic-card, .compare-col, .mile, .news-row, .rank, .shield, .faq-item, .form-card, .sub-copy, .channel-box {
 background: var(--glass); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); backdrop-filter: blur(12px);
}
.pick-card { padding: 16px; }
.pick-card.is-hot {
 grid-column: 1 / -1;
 background: linear-gradient(180deg, rgba(61,125,255,0.28), rgba(10,24,48,0.78));
 box-shadow: var(--glow);
}
.pick-card img { width: 100%; height: 140px; object-fit: cover; border-radius: 12px; margin: 10px 0; }
.pick-card h2, .pick-card h3 { font-size: 20px; margin-bottom: 6px; }
.pick-top { display: flex; justify-content: space-between; gap: 8px; align-items: center; }
.spec-list { list-style: none; padding: 0; margin: 8px 0 14px; }
.spec-list li { display: flex; justify-content: space-between; gap: 10px; padding: 7px 0; border-top: 1px solid rgba(255,255,255,0.06); font-size: 14px; color: #d7e6f8; }
.ticker { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; padding: 10px 12px; border-radius: 14px; border: 1px solid var(--line); background: rgba(8, 20, 40, 0.72); }
.ticker p { margin: 0; color: #d5e4f8; font-weight: 600; }
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.metric { padding: 18px; min-height: 132px; }
.metric b { display: block; font-size: 30px; line-height: 1.1; color: white; margin: 8px 0 4px; }
.metric span, .metric small { color: var(--muted); }
.metric i { color: var(--cyan); }
.matrix-layout { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 18px; align-items: start; }
.scroller { display: flex; gap: 14px; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 8px; margin-bottom: 16px; }
.scroller::-webkit-scrollbar { height: 8px; }
.scroller::-webkit-scrollbar-thumb { background: rgba(103, 231, 255, 0.35); border-radius: 999px; }
.topic-card { min-width: 260px; flex: 0 0 270px; scroll-snap-align: start; padding: 16px; }
.topic-card img { height: 120px; width: 100%; object-fit: cover; border-radius: 12px; margin-bottom: 10px; }
.topic-card h3, .news-row h3, .rank h3, .compare-col h3, .shield h3 { margin: 0 0 6px; font-size: 18px; }
.topic-card p, .compare-col p, .shield p, .faq-item p, .sub-copy p, .rank p { color: var(--muted); }
.channel-box { padding: 16px 18px; }
.channel-row { display: flex; justify-content: space-between; gap: 12px; padding: 11px 0; border-bottom: 1px solid rgba(255,255,255,0.06); color: #e7f2ff; font-weight: 600; }
.channel-row:last-child { border-bottom: 0; }
.channel-row em { font-style: normal; color: var(--cyan); font-size: 13px; }
.compare-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 14px; }
.compare-col { padding: 18px; }
.compare-col.is-current { box-shadow: var(--glow); background: linear-gradient(180deg, rgba(26,167,255,0.16), rgba(10,24,48,0.78)); }
.compare-col img { height: 180px; width: 100%; object-fit: cover; border-radius: 14px; margin-bottom: 12px; }
.delta { display: flex; justify-content: space-between; gap: 8px; padding: 8px 0; border-top: 1px solid rgba(255,255,255,0.08); color: #d7e6f8; font-size: 14px; }
.delta b { color: var(--cyan); }
.mile-list { border-left: 2px solid rgba(103,231,255,0.35); margin-left: 12px; }
.mile { margin: 0 0 14px 18px; padding: 16px 18px; position: relative; }
.mile::before { content: ""; position: absolute; left: -25px; top: 22px; width: 12px; height: 12px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); }
.mile strong { display: block; color: white; }
.news-layout { display: grid; grid-template-columns: 1.4fr 0.7fr; gap: 16px; align-items: start; }
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.chip { border-radius: 999px; border: 1px solid var(--line); background: rgba(255,255,255,0.04); color: var(--muted); padding: 7px 12px; font-weight: 700; font-size: 13px; }
.chip.is-on, .chip:hover { color: #04121f; background: linear-gradient(135deg, var(--cyan), #9ad7ff); border-color: transparent; }
.news-list { display: grid; gap: 12px; }
.news-row { display: grid; grid-template-columns: 148px 1fr; gap: 14px; padding: 12px; align-items: center; }
.news-row img { width: 100%; height: 120px; object-fit: cover; border-radius: 12px; }
.rank { padding: 16px; }
.rank ol { margin: 8px 0 0; padding-left: 18px; color: #d7e6f8; }
.rank li { margin: 8px 0; }
.topic-card:hover, .pick-card:hover, .news-row:hover, .metric:hover, .compare-col:hover, .shield:hover { transform: translateY(-3px); border-color: rgba(103, 231, 255, 0.45); transition: 0.2s ease; }
.band { position: relative; overflow: hidden; min-height: 360px; display: flex; align-items: center; }
.band-photo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.band-shade { position: relative; z-index: 1; width: 100%; background: linear-gradient(90deg, rgba(5,12,24,0.92) 0%, rgba(5,12,24,0.78) 48%, rgba(5,12,24,0.55) 100%); padding: 64px 0; }
.band-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 22px; align-items: center; }
.band h2 { font-size: clamp(28px, 4vw, 40px); margin-bottom: 10px; }
.shield-stack { display: grid; gap: 12px; }
.shield { padding: 16px; }
.faq-list { display: grid; gap: 10px; }
.faq-item { padding: 0 16px; }
.faq-item summary { cursor: pointer; font-weight: 700; padding: 14px 0; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--cyan); font-size: 20px; }
.faq-item[open] summary::after { content: "–"; }
.faq-item p { margin: 0 0 14px; }
.request-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 18px; align-items: start; }
.sub-copy, .form-card { padding: 20px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field.full { grid-column: 1 / -1; }
.field span { font-size: 13px; font-weight: 700; }
.field input, .field select, .field textarea {
 width: 100%; background: rgba(255,255,255,0.04); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px;
}
.field textarea { min-height: 110px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(103,231,255,0.15); outline: none; }
.field option { background: #0a1830; }
.form-note { min-height: 1.4em; color: var(--cyan); font-weight: 600; margin-top: 10px; }
.site-footer { border-top: 1px solid var(--line); padding: 42px 0 28px; background: #040b16; }
.foot-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 22px; }
.foot-grid strong { display: block; margin-bottom: 8px; }
.foot-grid a { display: block; color: var(--muted); padding: 4px 0; }
.foot-grid a.logo { display: flex; color: inherit; }
.foot-grid a:hover { color: var(--cyan); }
.copy { color: var(--muted); font-size: 13px; margin-top: 18px; }
@media (max-width: 1024px) {
 .nav-links { display: none; }
 .menu-toggle { display: inline-flex; }
 .drawer.open { display: grid; }
 .intro-grid, .matrix-layout, .compare-grid, .news-layout, .band-grid, .request-grid, .foot-grid { grid-template-columns: 1fr; }
 .metric-grid { grid-template-columns: 1fr 1fr; }
 .search input { width: 120px; }
 .section-head { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 768px) {
 .section { padding: 56px 0; }
 .search { display: none; }
 .nav-tools .btn { padding: 9px 12px; }
 .news-row { grid-template-columns: 1fr; }
 .news-row img, .pick-card img, .compare-col img { height: 180px; }
 .form-grid { grid-template-columns: 1fr; }
 .logo { min-width: 0; }
}
@media (max-width: 520px) {
 .container { width: min(var(--max), calc(100% - 20px)); }
 .metric-grid, .pick-board { grid-template-columns: 1fr; }
 .pick-card.is-hot { grid-column: auto; }
 .page-intro h1 { font-size: 32px; }
 .hero-actions .btn, .pick-card .btn { width: 100%; }
 .ticker { align-items: flex-start; flex-direction: column; }
 .channel-row { flex-direction: column; gap: 2px; }
 .nav-wrap { min-height: 64px; }
}
@media (prefers-reduced-motion: reduce) {
 * { transition: none !important; scroll-behavior: auto !important; }
}

/* roulang page: category4 */
:root {
  --bg: #06101d;
  --bg-2: #0a1830;
  --bg-3: #102445;
  --ink: #e8f2ff;
  --muted: #b7c8e2;
  --line: rgba(140, 196, 255, 0.22);
  --cyan: #67e7ff;
  --blue: #3d7dff;
  --blue-2: #1aa7ff;
  --glass: rgba(10, 24, 48, 0.62);
  --glass-2: rgba(18, 40, 78, 0.72);
  --radius: 18px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --glow: 0 0 0 1px rgba(120, 220, 255, 0.35), 0 0 28px rgba(61, 125, 255, 0.45);
  --max: 1160px;
  --pad: 22px;
}
/* roulang page: category4 */
html { scroll-behavior: smooth; }
*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Be Vietnam Pro", sans-serif;
  background: radial-gradient(1200px 500px at 80% -10%, rgba(61, 125, 255, 0.22), transparent 55%), var(--bg);
  color: var(--ink);
  line-height: 1.7;
  font-size: 16px;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font-family: inherit; color: inherit; }
button { cursor: pointer; }
.container { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 30;
  background: rgba(6, 16, 29, 0.88);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}
.nav-wrap {
  min-height: 70px;
  display: flex; align-items: center; gap: 18px;
}
.logo { display: flex; flex-direction: column; line-height: 1.05; min-width: 168px; }
.logo-mark { font-weight: 800; letter-spacing: 0.04em; font-size: 20px; color: white; }
.logo-sub { color: var(--cyan); font-size: 12px; font-weight: 600; }
.nav-links { display: flex; align-items: center; gap: 6px; flex: 1; }
.nav-links a {
  color: var(--muted); font-size: 13px; font-weight: 600; padding: 8px 8px; border-radius: 999px;
}
.nav-links a:hover, .nav-links a:focus-visible { color: white; background: rgba(103, 231, 255, 0.08); }
.nav-links a.active { color: #04121f; background: linear-gradient(135deg, var(--cyan), #9ad7ff); }
.nav-tools { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.search { display: flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.04); border: 1px solid var(--line); border-radius: 999px; padding: 6px 10px; }
.search input { background: transparent; border: 0; outline: 0; width: 168px; font-size: 13px; }
.search button { background: transparent; border: 0; color: var(--cyan); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 999px; padding: 11px 18px; border: 1px solid transparent; font-weight: 700; transition: 0.2s ease;
}
.btn-glow {
  background: linear-gradient(135deg, #3d7dff, #19c8ff);
  color: white; box-shadow: var(--glow);
}
.btn-glow:hover { transform: translateY(-2px); filter: brightness(1.06); }
.btn-glow:active { transform: translateY(0); }
.btn-ghost { background: rgba(255,255,255,0.04); border-color: var(--line); color: white; }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.btn:focus-visible, .nav-links a:focus-visible, .search input:focus-visible, .menu-toggle:focus-visible, summary:focus-visible, .field input:focus-visible, .field select:focus-visible, .field textarea:focus-visible {
  outline: 2px solid var(--cyan); outline-offset: 2px;
}
.menu-toggle {
  display: none; width: 42px; height: 42px; border-radius: 12px;
  border: 1px solid var(--line); background: rgba(255,255,255,0.04); color: white;
  align-items: center; justify-content: center;
}
.eyebrow { color: var(--cyan); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; font-size: 12px; margin: 0 0 10px; }
.lead { max-width: 680px; color: #d5e4f8; font-size: 17px; margin: 0 0 22px; }
.section { padding: 74px 0; }
.section-alt { background: linear-gradient(180deg, rgba(16, 36, 69, 0.35), rgba(6, 16, 29, 0)); }
.section-head { display: flex; justify-content: space-between; gap: 24px; align-items: flex-end; margin-bottom: 22px; }
.section-head h2, .block-title { font-size: 32px; line-height: 1.25; margin: 0 0 8px; }
.section p, .prose { color: var(--muted); }
h1 { font-size: 46px; line-height: 1.15; margin: 0 0 14px; letter-spacing: -0.03em; }
h2, h3 { color: white; }
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.feed-item, .rank, .bento-card, .topic-card, .tree-group, .compare-col, .update-row, .mile, .news-row, .quote, .shield, .qa, .faq-item, .form-card, .sub-copy, .metric, .sheet, .span-card {
  background: var(--glass); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); backdrop-filter: blur(12px);
}
.feed-item { display: grid; grid-template-columns: 168px 1fr; gap: 14px; padding: 12px; }
.feed-item img, .news-row img, .sub-visual img { width: 100%; height: 120px; object-fit: cover; border-radius: 12px; }
.feed-item h3, .rank h3, .news-row h3, .topic-card h3, .bento-card h3, .compare-col h3, .shield h3 { margin: 0 0 6px; font-size: 18px; }
.tag, .badge { display: inline-flex; align-items: center; gap: 6px; border-radius: 999px; padding: 3px 8px; font-size: 12px; font-weight: 700; color: #d8f7ff; background: rgba(103, 231, 255, 0.1); border: 1px solid rgba(103, 231, 255, 0.2); }
.rank:hover, .feed-item:hover, .bento-card:hover, .topic-card:hover, .news-row:hover, .compare-col:hover, .mile:hover, .shield:hover { transform: translateY(-3px); border-color: rgba(103, 231, 255, 0.45); transition: 0.2s ease; }
.bento-card { padding: 18px; min-height: 210px; }
.bento-card.wide { background: linear-gradient(180deg, rgba(61,125,255,0.18), rgba(10,24,48,0.7)); }
.bento-card p, .topic-card p, .tree-group p, .compare-col p, .quote p, .shield p, .qa p, .sheet p, .span-card p { color: var(--muted); }
.topic-card { min-width: 280px; scroll-snap-align: start; padding: 16px; }
.topic-card img { height: 120px; width: 100%; object-fit: cover; border-radius: 12px; margin-bottom: 10px; }
.tree a { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; border-bottom: 1px solid rgba(255,255,255,0.06); color: #e7f2ff; font-weight: 600; }
.tree a:hover { color: var(--cyan); }
.compare-col { padding: 18px; }
.compare-col img { height: 180px; width: 100%; object-fit: cover; border-radius: 14px; margin-bottom: 12px; }
.delta { display: flex; justify-content: space-between; gap: 8px; padding: 8px 0; border-top: 1px solid rgba(255,255,255,0.08); color: #d5e6fb; font-weight: 600; font-size: 14px; }
.site-footer { border-top: 1px solid var(--line); background: #07111f; padding: 46px 0 22px; margin-top: 10px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 0.7fr 0.8fr 0.9fr; gap: 22px; }
.foot-grid strong { display: block; margin-bottom: 8px; }
.foot-grid a { display: block; color: var(--muted); padding: 4px 0; font-weight: 600; }
.foot-grid a:hover { color: var(--cyan); }
.foot-grid p { color: var(--muted); }
.copy { color: var(--muted); border-top: 1px solid rgba(255,255,255,0.08); margin: 22px 0 0; padding-top: 14px; font-size: 14px; }
.dossier-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 28px; align-items: stretch; }
.crumb { color: var(--muted); font-size: 13px; margin-bottom: 14px; }
.crumb b { color: white; font-weight: 600; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 18px; }
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; }
.sheet { padding: 14px; display: flex; flex-direction: column; gap: 12px; }
.sheet img { width: 100%; height: 220px; object-fit: cover; border-radius: 14px; }
.sheet-top { display: flex; justify-content: space-between; gap: 10px; align-items: center; }
.toc-list { list-style: none; margin: 0; padding: 0; }
.toc-list li { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; border-bottom: 1px solid rgba(255,255,255,0.06); color: #e7f2ff; font-weight: 600; }
.toc-list a:hover { color: var(--cyan); }
.metric { padding: 18px; }
.metric b { display: block; font-size: 30px; line-height: 1.1; color: white; margin: 8px 0 4px; }
.metric span, .metric small { color: var(--muted); }
.bento-wrap { display: grid; grid-template-columns: 1.45fr 0.85fr; gap: 14px; }
.bento-card img, .span-card img { width: 100%; height: 150px; object-fit: cover; border-radius: 12px; margin-bottom: 12px; }
.span-card { grid-column: 1 / -1; display: grid; grid-template-columns: 240px 1fr; gap: 16px; padding: 14px; align-items: center; }
.span-card img { height: 140px; margin: 0; }
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.timeline { display: grid; gap: 12px; }
.mile { display: grid; grid-template-columns: 74px 1fr; gap: 8px 16px; padding: 16px 18px; align-items: start; }
.mile-index { font-size: 26px; font-weight: 800; color: var(--cyan); line-height: 1; }
.model-list { display: grid; gap: 12px; }
.model-list .news-row { display: grid; grid-template-columns: 188px 1fr auto; gap: 16px; padding: 12px; align-items: center; }
.model-list .news-row img { width: 188px; height: 108px; }
.model-side { text-align: right; min-width: 120px; }
.model-side strong { display: block; color: white; }
.assure-band { position: relative; border-radius: 24px; overflow: hidden; border: 1px solid var(--line); min-height: 360px; box-shadow: var(--shadow); }
.assure-band > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.assure-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr 1fr; gap: 18px; padding: 28px; background: linear-gradient(100deg, rgba(6,16,29,0.94) 10%, rgba(6,16,29,0.78) 55%, rgba(8,20,40,0.55)); min-height: 360px; }
.assure-list { display: grid; gap: 10px; align-content: center; }
.shield { padding: 14px 16px; }
.faq-list { display: grid; gap: 10px; }
.faq-item { padding: 0 16px; }
.faq-item summary { cursor: pointer; font-weight: 700; padding: 14px 0; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:after { content: "+"; color: var(--cyan); font-size: 20px; }
.faq-item[open] summary:after { content: "–"; }
.faq-item p { margin-top: 0; }
.form-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 22px; align-items: start; }
.form-card { padding: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }
.field span { font-size: 13px; font-weight: 700; }
.field input, .field select, .field textarea {
  width: 100%; background: rgba(255,255,255,0.04); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px;
}
.field textarea { min-height: 110px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(103,231,255,0.15); }
.form-note { min-height: 24px; color: var(--cyan); font-weight: 600; }
.head-note { max-width: 360px; text-align: right; }
@media (max-width: 1080px) {
  .menu-toggle { display: inline-flex; }
  .nav-links {
    display: none; position: absolute; top: 70px; left: 0; right: 0; z-index: 40;
    flex-direction: column; align-items: stretch; padding: 12px 16px 16px;
    background: rgba(6,16,29,0.97); border-bottom: 1px solid var(--line);
  }
  .nav-links.is-open { display: flex; }
  .nav-links a { padding: 12px; }
  .search input { width: 120px; }
  .dossier-grid, .bento-wrap, .compare-grid, .form-grid, .assure-inner, .foot-grid { grid-template-columns: 1fr 1fr; }
  .metric-grid { grid-template-columns: 1fr 1fr; }
  h1 { font-size: 36px; }
}
@media (max-width: 768px) {
  .section { padding: 54px 0; }
  .section-head, .dossier-grid, .bento-wrap, .compare-grid, .form-grid, .assure-inner, .foot-grid, .span-card, .model-list .news-row, .form-row { grid-template-columns: 1fr; }
  .head-note, .model-side { text-align: left; }
  .span-card img, .model-list .news-row img { width: 100%; height: 180px; }
  .search { display: none; }
  .nav-cta { display: none; }
  .section-head h2, .block-title { font-size: 26px; }
}
@media (max-width: 520px) {
  .metric-grid { grid-template-columns: 1fr; }
  h1 { font-size: 30px; }
  .hero-actions .btn, .form-card .btn { width: 100%; }
  .mile { grid-template-columns: 52px 1fr; }
  .logo { min-width: 0; }
  .container { width: min(var(--max), calc(100% - 20px)); }
}

/* roulang page: category3 */
:root {
  --bg: #06101d;
  --bg-2: #0a1830;
  --bg-3: #102445;
  --ink: #e8f2ff;
  --muted: #b7c8e2;
  --line: rgba(140, 196, 255, 0.22);
  --cyan: #67e7ff;
  --blue: #3d7dff;
  --blue-2: #1aa7ff;
  --glass: rgba(10, 24, 48, 0.62);
  --glass-2: rgba(18, 40, 78, 0.72);
  --radius: 18px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --glow: 0 0 0 1px rgba(120, 220, 255, 0.35), 0 0 28px rgba(61, 125, 255, 0.45);
  --max: 1160px;
  --pad: 22px;
  --amber: #ffd27a;
  --mint: #9af6d8;
}
/* roulang page: bn-v */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Be Vietnam Pro", sans-serif;
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(61, 125, 255, 0.22), transparent 55%),
    var(--bg);
  color: var(--ink);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font-family: inherit; color: inherit; }
button { cursor: pointer; }
p { margin: 0 0 12px; }
h1, h2, h3 { overflow-wrap: break-word; }
.container { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 30;
  background: rgba(6, 16, 29, 0.88);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}
.nav-wrap {
  min-height: 70px;
  display: flex; align-items: center; gap: 18px;
}
.logo { display: flex; flex-direction: column; line-height: 1.05; min-width: 150px; }
.logo-mark { font-weight: 800; letter-spacing: 0.04em; font-size: 20px; color: white; }
.logo-sub { color: var(--cyan); font-size: 12px; font-weight: 600; }
.nav-links { display: flex; align-items: center; gap: 4px; flex: 1; min-width: 0; }
.nav-links a, .drawer a {
  color: var(--muted); font-size: 13px; font-weight: 600; padding: 8px 8px; border-radius: 999px;
}
.nav-links a:hover, .nav-links a:focus-visible, .drawer a:hover, .drawer a:focus-visible {
  color: white; background: rgba(103, 231, 255, 0.08);
}
.nav-links a.active, .drawer a.active {
  color: #04121f; background: linear-gradient(135deg, var(--cyan), #9ad7ff);
}
.nav-tools { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.search {
  display: flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.04); border: 1px solid var(--line);
  border-radius: 999px; padding: 6px 10px;
}
.search input { background: transparent; border: 0; outline: 0; width: 132px; font-size: 13px; padding: 0; }
.search button { background: transparent; border: 0; color: var(--cyan); padding: 0; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 999px; padding: 11px 18px; border: 1px solid transparent;
  font-weight: 700; transition: 0.2s ease; line-height: 1.2;
}
.btn-glow {
  background: linear-gradient(135deg, #3d7dff, #19c8ff);
  color: white; box-shadow: var(--glow);
}
.btn-glow:hover { transform: translateY(-2px); filter: brightness(1.06); }
.btn-glow:active { transform: translateY(0); }
.btn-ghost { background: rgba(255,255,255,0.04); border-color: var(--line); color: white; }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.nav-tools .btn { padding: 8px 14px; font-size: 13px; white-space: nowrap; }
.btn:focus-visible, .nav-links a:focus-visible, .search input:focus-visible, .menu-toggle:focus-visible, summary:focus-visible, .chip:focus-visible {
  outline: 2px solid var(--cyan); outline-offset: 2px;
}
.menu-toggle {
  display: none; width: 42px; height: 42px; border-radius: 12px;
  border: 1px solid var(--line); background: rgba(255,255,255,0.04); color: white;
}
.drawer { display: none; }
.section { padding: 74px 0; }
.section-alt { background: linear-gradient(180deg, rgba(16, 36, 69, 0.45), rgba(6, 16, 29, 0)); }
.section-head { display: flex; justify-content: space-between; gap: 24px; align-items: flex-end; margin-bottom: 22px; }
.section-head h2, .block-title { font-size: 32px; line-height: 1.25; margin: 0 0 8px; }
.section-head p, .section p, .prose { color: var(--muted); }
.eyebrow { color: var(--cyan); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; font-size: 12px; margin-bottom: 10px; }
.lead { max-width: 640px; color: #d5e4f8; font-size: 17px; margin: 0 0 22px; }
.tag, .badge {
  display: inline-flex; align-items: center; gap: 6px; border-radius: 999px;
  padding: 3px 8px; font-size: 12px; font-weight: 700; color: #d8f7ff;
  background: rgba(103, 231, 255, 0.1); border: 1px solid rgba(103, 231, 255, 0.2);
}
.crumb { display: flex; gap: 8px; align-items: center; color: var(--muted); font-size: 13px; font-weight: 600; margin-bottom: 14px; }
.crumb a:hover { color: var(--cyan); }
.crumb span[aria-hidden] { opacity: 0.6; }
.patch-hero { padding: 34px 0 20px; }
.patch-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 22px; align-items: stretch; }
.patch-copy h1 { font-size: clamp(32px, 4vw, 50px); line-height: 1.12; margin: 0 0 14px; letter-spacing: -0.03em; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.pain {
  margin: 0 0 18px; padding: 12px 14px; border-left: 3px solid var(--amber);
  background: rgba(255, 210, 122, 0.08); border-radius: 0 14px 14px 0; color: #ffe7b8; font-weight: 600;
}
.demo-panel {
  position: relative; overflow: hidden; border-radius: 24px; min-height: 460px;
  border: 1px solid var(--line); box-shadow: var(--shadow); background: #07111f;
}
.demo-panel > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.demo-shade {
  position: relative; z-index: 1; height: 100%; min-height: 460px;
  padding: 18px; display: flex; flex-direction: column; justify-content: flex-end;
  background: linear-gradient(180deg, rgba(5,12,24,0.15), rgba(5,12,24,0.88));
}
.demo-card {
  background: var(--glass-2); border: 1px solid var(--line); border-radius: 16px;
  padding: 14px; backdrop-filter: blur(14px); box-shadow: var(--glow);
}
.demo-top { display: flex; justify-content: space-between; gap: 10px; align-items: center; margin-bottom: 10px; }
.demo-top strong { font-size: 16px; }
.demo-row { display: flex; justify-content: space-between; gap: 12px; padding: 8px 0; border-top: 1px solid rgba(255,255,255,0.08); font-size: 14px; }
.demo-row span { color: var(--muted); }
.live { display: inline-flex; align-items: center; gap: 6px; color: var(--mint); font-size: 12px; font-weight: 700; }
.live i { width: 8px; height: 8px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 10px var(--mint); }
.update-strip { display: flex; gap: 10px; overflow-x: auto; padding: 16px 0 6px; scroll-snap-type: x mandatory; }
.update-chip {
  flex: 0 0 250px; scroll-snap-align: start; padding: 12px 14px; border-radius: 14px;
  background: var(--glass); border: 1px solid var(--line); backdrop-filter: blur(12px);
}
.update-chip:hover { border-color: rgba(103, 231, 255, 0.5); transform: translateY(-2px); transition: 0.2s ease; }
.update-chip b { display: block; color: white; }
.update-chip span { color: var(--muted); font-size: 13px; }
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.metric, .bento-card, .patch-mini, .compare-col, .mile, .news-row, .shield, .faq-item, .form-card, .sub-copy, .channel {
  background: var(--glass); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); backdrop-filter: blur(12px);
}
.metric { padding: 18px; }
.metric b { display: block; font-size: 34px; line-height: 1.1; letter-spacing: -0.04em; }
.metric span { color: var(--muted); font-weight: 600; font-size: 14px; }
.metric i { color: var(--cyan); margin-bottom: 10px; }
.matrix { display: grid; grid-template-columns: 1.25fr 0.75fr; gap: 14px; }
.bento-card { padding: 16px; }
.bento-card img { width: 100%; height: 230px; object-fit: cover; border-radius: 14px; margin-bottom: 12px; }
.bento-card h3, .patch-mini h3, .compare-col h3, .news-row h3, .mile h3 { margin: 0 0 6px; font-size: 18px; }
.bento-card p, .patch-mini p, .compare-col p, .mile p, .news-row p, .shield p, .sub-copy p, .channel p { color: var(--muted); }
.patch-side { display: flex; flex-direction: column; gap: 12px; }
.patch-mini { display: grid; grid-template-columns: 58px 1fr; gap: 12px; padding: 14px; align-items: center; }
.patch-mini:hover, .news-row:hover, .metric:hover, .bento-card:hover, .compare-col:hover, .channel:hover {
  transform: translateY(-3px); border-color: rgba(103, 231, 255, 0.45); transition: 0.2s ease;
}
.ico {
  width: 58px; height: 58px; border-radius: 16px; display: grid; place-items: center;
  background: rgba(61, 125, 255, 0.18); color: var(--cyan); font-size: 20px;
  border: 1px solid rgba(103, 231, 255, 0.25);
}
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.compare-col { padding: 16px; }
.compare-col img { height: 190px; width: 100%; object-fit: cover; border-radius: 14px; margin-bottom: 12px; }
.compare-col.before { box-shadow: inset 0 0 0 1px rgba(255, 210, 122, 0.25); }
.compare-col.after { box-shadow: var(--glow); }
.delta { display: flex; justify-content: space-between; gap: 8px; padding: 8px 0; border-top: 1px solid rgba(255,255,255,0.08); font-weight: 600; }
.delta em { font-style: normal; color: var(--amber); }
.compare-col.after .delta em { color: var(--mint); }
.mile-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; position: relative; }
.mile-list::before {
  content: ""; position: absolute; left: 6%; right: 6%; top: 34px; height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
}
.mile { position: relative; padding: 16px; }
.mile .when { color: var(--cyan); font-weight: 800; font-size: 13px; letter-spacing: 0.04em; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.chip {
  border-radius: 999px; border: 1px solid var(--line); background: rgba(255,255,255,0.04);
  color: var(--muted); padding: 7px 12px; font-weight: 700; font-size: 13px;
}
.chip.active, .chip:hover { color: #04121f; background: linear-gradient(135deg, var(--cyan), #9ad7ff); border-color: transparent; }
.news-list { display: flex; flex-direction: column; gap: 12px; }
.news-row { display: grid; grid-template-columns: 78px 168px 1fr auto; gap: 14px; align-items: center; padding: 12px; }
.news-row img { width: 168px; height: 108px; object-fit: cover; border-radius: 12px; }
.rank-no { font-size: 22px; font-weight: 800; color: var(--cyan); }
.news-meta { color: var(--muted); font-size: 13px; font-weight: 600; }
.assure {
  background:
    linear-gradient(105deg, rgba(6,16,29,0.92), rgba(6,16,29,0.78)),
    url("/assets/images/36db7db3d61c63bd.webp") center/cover fixed;
}
.assure-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 18px; align-items: start; }
.shield-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.shield { padding: 16px; }
.shield h3 { margin: 8px 0; font-size: 17px; }
.shield i { color: var(--cyan); }
.channel-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 14px; }
.channel { padding: 14px; }
.channel strong { display: block; margin-bottom: 4px; }
.faq-layout { display: grid; grid-template-columns: 0.72fr 1.28fr; gap: 18px; }
.faq-list { display: flex; flex-direction: column; gap: 10px; }
.faq-item { padding: 0 16px; }
.faq-item summary { cursor: pointer; font-weight: 700; padding: 14px 0; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--cyan); font-size: 20px; }
.faq-item[open] summary::after { content: "–"; }
.faq-item p { margin: 0 0 14px; }
.form-split { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 16px; }
.sub-copy, .form-card { padding: 18px; }
.check { list-style: none; padding: 0; margin: 12px 0 0; }
.check li { display: flex; gap: 8px; align-items: flex-start; padding: 8px 0; border-top: 1px solid rgba(255,255,255,0.08); color: #d7e6f8; font-weight: 600; }
.check i { color: var(--mint); margin-top: 4px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.field { display: flex; flex-direction: column; gap: 6px; font-size: 14px; font-weight: 600; }
.field.full { grid-column: 1 / -1; }
.field span { color: var(--muted); }
input, select, textarea {
  width: 100%; background: rgba(255,255,255,0.04); border: 1px solid var(--line);
  border-radius: 12px; padding: 12px 14px; outline: none;
}
textarea { min-height: 110px; resize: vertical; }
input:focus, select:focus, textarea:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(103,231,255,0.15); }
select option { background: #0a1830; color: white; }
.form-note { margin-top: 12px; padding: 12px; border-radius: 12px; border: 1px solid rgba(154,246,216,0.4); color: var(--mint); background: rgba(154,246,216,0.08); }
.site-footer { border-top: 1px solid var(--line); padding: 42px 0 28px; background: #040b16; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 0.8fr 0.8fr 0.8fr; gap: 22px; }
.foot-grid p { color: var(--muted); }
.foot-grid strong { display: block; margin-bottom: 10px; }
.foot-grid a { display: block; color: var(--muted); padding: 4px 0; font-weight: 600; }
.foot-grid .logo { margin-bottom: 10px; }
.foot-grid a:hover { color: var(--cyan); }
.copy { color: var(--muted); font-size: 13px; margin: 22px 0 0; border-top: 1px solid var(--line); padding-top: 16px; }
@media (max-width: 1080px) {
  .nav-links { display: none; }
  .menu-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .drawer.open { display: flex; flex-direction: column; padding: 8px 16px 16px; border-top: 1px solid var(--line); background: rgba(6,16,29,0.98); }
  .drawer a { padding: 12px 10px; }
  .patch-grid, .matrix, .assure-grid, .faq-layout, .form-split { grid-template-columns: 1fr; }
  .mile-list { grid-template-columns: 1fr 1fr; }
  .mile-list::before { display: none; }
}
@media (max-width: 1024px) {
  .metric-grid, .compare-grid, .channel-row { grid-template-columns: 1fr 1fr; }
  .news-row { grid-template-columns: 56px 140px 1fr; }
  .news-row .news-meta { grid-column: 2 / -1; }
}
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .section-head { flex-direction: column; align-items: flex-start; }
  .metric-grid, .shield-grid, .form-grid, .foot-grid, .channel-row { grid-template-columns: 1fr; }
  .search input { width: 92px; }
  .news-row { grid-template-columns: 1fr; }
  .news-row img { width: 100%; height: 160px; }
  .bento-card img, .compare-col img { height: 180px; }
  .assure { background-attachment: scroll; }
}
@media (max-width: 520px) {
  .container { width: min(var(--max), calc(100% - 22px)); }
  .nav-tools .btn-glow, .search { display: none; }
  .section { padding: 46px 0; }
  .section-head h2 { font-size: 28px; }
  .hero-actions .btn { width: 100%; }
  .mile-list { grid-template-columns: 1fr; }
  .demo-panel, .demo-shade { min-height: 0; }
  .metric b { font-size: 30px; }
  .logo { min-width: 0; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}

/* roulang page: category6 */
:root {
  --bg: #06101d;
  --bg-2: #0a1830;
  --bg-3: #102445;
  --ink: #e8f2ff;
  --muted: #b7c8e2;
  --line: rgba(140, 196, 255, 0.22);
  --cyan: #67e7ff;
  --blue: #3d7dff;
  --blue-2: #1aa7ff;
  --glass: rgba(10, 24, 48, 0.62);
  --glass-2: rgba(18, 40, 78, 0.72);
  --radius: 18px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --glow: 0 0 0 1px rgba(120, 220, 255, 0.35), 0 0 28px rgba(61, 125, 255, 0.45);
  --max: 1160px;
  --pad: 22px;
}
/* roulang page: category6 sua loi */
:root {
  --bg: #06101d;
  --bg-2: #0a1830;
  --bg-3: #102445;
  --ink: #e8f2ff;
  --muted: #b7c8e2;
  --line: rgba(140, 196, 255, 0.22);
  --cyan: #67e7ff;
  --blue: #3d7dff;
  --blue-2: #1aa7ff;
  --glass: rgba(10, 24, 48, 0.62);
  --glass-2: rgba(18, 40, 78, 0.72);
  --radius: 18px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --glow: 0 0 0 1px rgba(120, 220, 255, 0.35), 0 0 28px rgba(61, 125, 255, 0.45);
  --max: 1160px;
  --pad: 22px;
}
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Be Vietnam Pro", sans-serif;
  background: radial-gradient(1200px 500px at 80% -10%, rgba(61, 125, 255, 0.22), transparent 55%), var(--bg);
  color: var(--ink);
  line-height: 1.7;
  font-size: 16px;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font-family: inherit; color: inherit; }
button { cursor: pointer; }
.container { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 30;
  background: rgba(6, 16, 29, 0.88);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}
.nav-wrap {
  min-height: 70px;
  display: flex; align-items: center; gap: 18px;
}
.logo { display: flex; flex-direction: column; line-height: 1.05; min-width: 168px; }
.logo-mark { font-weight: 800; letter-spacing: 0.04em; font-size: 20px; color: white; }
.logo-sub { color: var(--cyan); font-size: 12px; font-weight: 600; }
.nav-links { display: flex; align-items: center; gap: 6px; flex: 1; }
.nav-links a {
  color: var(--muted); font-size: 13px; font-weight: 600; padding: 8px 8px; border-radius: 999px;
}
.nav-links a:hover, .nav-links a:focus-visible { color: white; background: rgba(103, 231, 255, 0.08); }
.nav-links a.active { color: #04121f; background: linear-gradient(135deg, var(--cyan), #9ad7ff); }
.nav-tools { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.search { display: flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.04); border: 1px solid var(--line); border-radius: 999px; padding: 6px 10px; }
.search input { background: transparent; border: 0; outline: 0; width: 148px; font-size: 13px; }
.search button { background: transparent; border: 0; color: var(--cyan); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 999px; padding: 11px 18px; border: 1px solid transparent; font-weight: 700; transition: 0.2s ease;
}
.btn-glow {
  background: linear-gradient(135deg, #3d7dff, #19c8ff);
  color: white; box-shadow: var(--glow);
}
.btn-glow:hover { transform: translateY(-2px); filter: brightness(1.06); }
.btn-glow:active { transform: translateY(0); }
.btn-ghost { background: rgba(255,255,255,0.04); border-color: var(--line); color: white; }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.btn:focus-visible, .nav-links a:focus-visible, .search input:focus-visible, .menu-toggle:focus-visible, summary:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--cyan); outline-offset: 2px;
}
.menu-toggle, .drawer { display: none; }
.menu-toggle {
  width: 42px; height: 42px; border-radius: 12px;
  border: 1px solid var(--line); background: rgba(255,255,255,0.04); color: white;
  align-items: center; justify-content: center;
}
.drawer { border-top: 1px solid var(--line); padding: 8px 16px 16px; background: rgba(6, 16, 29, 0.98); }
.drawer a { display: block; padding: 10px 12px; border-radius: 12px; color: var(--muted); font-weight: 600; }
.drawer a:hover, .drawer a:focus-visible { color: white; background: rgba(103, 231, 255, 0.08); }
.drawer a.active { color: #04121f; background: linear-gradient(135deg, var(--cyan), #9ad7ff); }
.section { padding: 74px 0; }
.section-alt { background: linear-gradient(180deg, rgba(16, 36, 69, 0.35), rgba(6, 16, 29, 0)); }
.section-head { display: flex; justify-content: space-between; gap: 24px; align-items: flex-end; margin-bottom: 22px; }
.section-head h2, .block-title { font-size: 32px; line-height: 1.25; margin: 0 0 8px; }
.section p, .prose { color: var(--muted); }
.eyebrow { color: var(--cyan); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; font-size: 12px; margin-bottom: 10px; }
.lead { max-width: 760px; color: #d5e4f8; font-size: 17px; margin: 0 0 22px; }
.tag, .badge { display: inline-flex; align-items: center; gap: 6px; border-radius: 999px; padding: 3px 8px; font-size: 12px; font-weight: 700; color: #d8f7ff; background: rgba(103, 231, 255, 0.1); border: 1px solid rgba(103, 231, 255, 0.2); }
.feed-item, .rank, .bento-card, .topic-card, .tree-group, .compare-col, .update-row, .mile, .news-row, .quote, .shield, .qa, .faq-item, .form-card, .sub-copy, .icon-cell, .matrix-row, .stat-pill {
  background: var(--glass); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); backdrop-filter: blur(12px);
}
.feed-item { display: grid; grid-template-columns: 168px 1fr; gap: 14px; padding: 12px; }
.feed-item img, .news-row img, .sub-visual img { width: 100%; height: 120px; object-fit: cover; border-radius: 12px; }
.feed-item h3, .rank h3, .news-row h3, .topic-card h3, .bento-card h3, .shield h3, .qa h3, .mile h3 { margin: 0 0 6px; font-size: 18px; }
.feed-item:hover, .news-row:hover, .icon-cell:hover, .matrix-row:hover, .shield:hover, .qa:hover { transform: translateY(-3px); border-color: rgba(103, 231, 255, 0.45); transition: 0.2s ease; }
.bento-card p, .topic-card p, .tree-group p, .compare-col p, .quote p, .shield p, .qa p, .mile p, .news-row p, .feed-item p { color: var(--muted); }
.page-mast { padding: 42px 0 28px; }
.mast-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 28px; align-items: center; }
.icon-matrix { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.icon-cell { padding: 14px; min-height: 92px; }
.icon-cell i { color: var(--cyan); font-size: 18px; margin-bottom: 8px; }
.icon-cell strong { display: block; font-size: 14px; }
.icon-cell span { color: var(--muted); font-size: 12px; }
.status-strip { margin-top: 22px; display: flex; gap: 10px; overflow-x: auto; padding-bottom: 6px; scroll-snap-type: x mandatory; }
.status-chip, .stat-pill { flex: 0 0 auto; scroll-snap-align: start; padding: 10px 14px; border-radius: 14px; display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 14px; }
.status-chip b, .stat-pill b { color: white; font-size: 16px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }
.error-layout { display: grid; grid-template-columns: 280px 1fr; gap: 22px; align-items: start; }
.error-side { position: sticky; top: 92px; }
.feed-list { display: grid; gap: 12px; }
.matrix { display: grid; gap: 10px; }
.matrix-head, .matrix-row { display: grid; grid-template-columns: 130px 1.1fr 1.2fr 1fr; gap: 12px; align-items: start; }
.matrix-head { color: var(--cyan); font-size: 12px; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase; padding: 0 16px; background: transparent; border: 0; box-shadow: none; }
.matrix-row { padding: 16px; }
.matrix-row strong { color: white; }
.compare-wrap { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 16px; }
.compare-col { padding: 18px; }
.compare-col img { height: 190px; width: 100%; object-fit: cover; border-radius: 14px; margin-bottom: 12px; }
.compare-col.bad { background: linear-gradient(180deg, rgba(255, 90, 120, 0.12), rgba(10, 24, 48, 0.72)); }
.compare-col.good { background: linear-gradient(180deg, rgba(61, 125, 255, 0.2), rgba(10, 24, 48, 0.75)); }
.delta { display: flex; justify-content: space-between; gap: 8px; padding: 8px 0; border-top: 1px solid rgba(255,255,255,0.08); color: #d5e6fb; font-size: 14px; }
.delta span { color: var(--muted); }
.timeline { display: grid; gap: 0; position: relative; margin-left: 8px; }
.timeline:before { content: ""; position: absolute; left: 18px; top: 8px; bottom: 8px; width: 2px; background: linear-gradient(var(--cyan), transparent); }
.mile { margin: 0 0 14px 48px; padding: 16px 18px; position: relative; }
.mile:before { content: ""; position: absolute; left: -38px; top: 22px; width: 12px; height: 12px; border-radius: 50%; background: var(--cyan); box-shadow: var(--glow); }
.note-list { display: grid; gap: 12px; }
.news-row { display: grid; grid-template-columns: 210px 1fr auto; gap: 16px; align-items: center; padding: 12px; }
.news-row img { height: 110px; }
.assure-band {
  background:
    linear-gradient(100deg, rgba(6, 16, 29, 0.94) 0%, rgba(6, 16, 29, 0.78) 48%, rgba(8, 22, 48, 0.88) 100%),
    url("/assets/images/df609affb91a041c.webp") center/cover;
}
.assure-grid { display: grid; grid-template-columns: 1.4fr 0.8fr; gap: 16px; }
.shield-col { display: grid; gap: 12px; }
.shield { padding: 16px 18px; display: grid; grid-template-columns: 46px 1fr; gap: 12px; align-items: start; }
.shield i { width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center; color: #04121f; background: linear-gradient(135deg, var(--cyan), #9ad7ff); }
.stat-stack { display: grid; gap: 12px; }
.stat-pill { display: block; padding: 18px; }
.stat-pill b { display: block; font-size: 28px; line-height: 1.1; margin-bottom: 4px; }
.qa-row { display: grid; grid-template-columns: 1.3fr 0.8fr 0.9fr; gap: 12px; }
.qa { padding: 16px; }
.qa:nth-child(2) { transform: translateY(18px); }
.close-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 18px; align-items: start; }
.faq-list { display: grid; gap: 10px; }
.faq-item { padding: 0 16px; }
.faq-item summary { cursor: pointer; font-weight: 700; padding: 14px 0; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:after { content: "+"; color: var(--cyan); font-size: 20px; }
.faq-item[open] summary:after { content: "–"; }
.faq-item p { margin-top: 0; }
.form-card { padding: 18px; }
.field { display: grid; gap: 6px; margin-bottom: 12px; }
.field span { font-size: 13px; font-weight: 700; color: #d7e9ff; }
.field input, .field select, .field textarea {
  width: 100%; box-sizing: border-box; background: rgba(255,255,255,0.04);
  border: 1px solid var(--line); border-radius: 12px; padding: 11px 12px;
}
.field textarea { min-height: 110px; resize: vertical; }
.form-note { color: var(--muted); font-size: 13px; }
.form-ok { display: none; margin-top: 12px; padding: 12px; border-radius: 12px; background: rgba(103, 231, 255, 0.1); border: 1px solid rgba(103, 231, 255, 0.3); }
.site-footer { border-top: 1px solid var(--line); padding: 36px 0 22px; background: #040b16; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 0.7fr 0.7fr 0.9fr; gap: 22px; }
.foot-grid strong { display: block; margin-bottom: 8px; }
.foot-grid a { display: block; color: var(--muted); padding: 4px 0; }
.foot-grid a:hover { color: var(--cyan); }
.copy { color: var(--muted); font-size: 13px; margin: 22px 0 0; border-top: 1px solid rgba(255,255,255,0.06); padding-top: 14px; }
@media (max-width: 1100px) {
  .nav-links { display: none; }
  .menu-toggle { display: inline-flex; }
  .drawer.open { display: grid; }
  .mast-grid, .error-layout, .compare-wrap, .assure-grid, .close-grid, .qa-row { grid-template-columns: 1fr; }
  .qa:nth-child(2) { transform: none; }
  .error-side { position: static; }
  .matrix-head { display: none; }
  .matrix-row, .news-row { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .section { padding: 54px 0; }
  .section-head { flex-direction: column; align-items: flex-start; }
  .section-head h2, .block-title { font-size: 26px; }
  .search { display: none; }
  .feed-item { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .news-row img, .feed-item img, .compare-col img { height: 160px; }
}
@media (max-width: 520px) {
  .container { width: min(var(--max), calc(100% - 20px)); }
  .nav-wrap { min-height: 62px; gap: 8px; }
  .logo { min-width: 0; }
  .btn-label { display: none; }
  .icon-matrix, .foot-grid { grid-template-columns: 1fr; }
  .hero-actions, .mast-actions { flex-direction: column; }
  .mast-actions .btn { width: 100%; }
}

/* roulang page: category5 */
:root {
 --bg: #06101d;
 --bg-2: #0a1830;
 --bg-3: #102445;
 --ink: #e8f2ff;
 --muted: #b7c8e2;
 --line: rgba(140, 196, 255, 0.22);
 --cyan: #67e7ff;
 --blue: #3d7dff;
 --blue-2: #1aa7ff;
 --glass: rgba(10, 24, 48, 0.62);
 --glass-2: rgba(18, 40, 78, 0.72);
 --radius: 18px;
 --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
 --glow: 0 0 0 1px rgba(120, 220, 255, 0.35), 0 0 28px rgba(61, 125, 255, 0.45);
 --max: 1160px;
 --pad: 22px;
}
/* roulang page: index */
:root {
 --bg: #06101d;
 --bg-2: #0a1830;
 --bg-3: #102445;
 --ink: #e8f2ff;
 --muted: #b7c8e2;
 --line: rgba(140, 196, 255, 0.22);
 --cyan: #67e7ff;
 --blue: #3d7dff;
 --blue-2: #1aa7ff;
 --glass: rgba(10, 24, 48, 0.62);
 --glass-2: rgba(18, 40, 78, 0.72);
 --radius: 18px;
 --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
 --glow: 0 0 0 1px rgba(120, 220, 255, 0.35), 0 0 28px rgba(61, 125, 255, 0.45);
 --max: 1160px;
 --pad: 22px;
}
html { scroll-behavior: smooth; }
body {
 margin: 0;
 font-family: "Be Vietnam Pro", sans-serif;
 background: radial-gradient(1200px 500px at 80% -10%, rgba(61, 125, 255, 0.22), transparent 55%), var(--bg);
 color: var(--ink);
 line-height: 1.7;
 font-size: 16px;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font-family: inherit; color: inherit; }
button { cursor: pointer; }
.container { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.site-header {
 position: sticky; top: 0; z-index: 30;
 background: rgba(6, 16, 29, 0.88);
 border-bottom: 1px solid var(--line);
 backdrop-filter: blur(16px);
}
.nav-wrap {
 min-height: 70px;
 display: flex; align-items: center; gap: 18px;
}
.logo { display: flex; flex-direction: column; line-height: 1.05; min-width: 168px; }
.logo-mark { font-weight: 800; letter-spacing: 0.04em; font-size: 20px; color: white; }
.logo-sub { color: var(--cyan); font-size: 12px; font-weight: 600; }
.nav-links { display: flex; align-items: center; gap: 6px; flex: 1; }
.nav-links a {
 color: var(--muted); font-size: 13px; font-weight: 600; padding: 8px 8px; border-radius: 999px;
}
.nav-links a:hover, .nav-links a:focus-visible { color: white; background: rgba(103, 231, 255, 0.08); }
.nav-links a.active { color: #04121f; background: linear-gradient(135deg, var(--cyan), #9ad7ff); }
.nav-tools { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.search { display: flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.04); border: 1px solid var(--line); border-radius: 999px; padding: 6px 10px; }
.search input { background: transparent; border: 0; outline: 0; width: 168px; font-size: 13px; }
.search button { background: transparent; border: 0; color: var(--cyan); }
.btn {
 display: inline-flex; align-items: center; justify-content: center; gap: 8px;
 border-radius: 999px; padding: 11px 18px; border: 1px solid transparent; font-weight: 700; transition: 0.2s ease;
}
.btn-glow {
 background: linear-gradient(135deg, #3d7dff, #19c8ff);
 color: white; box-shadow: var(--glow);
}
.btn-glow:hover { transform: translateY(-2px); filter: brightness(1.06); }
.btn-glow:active { transform: translateY(0); }
.btn-ghost { background: rgba(255,255,255,0.04); border-color: var(--line); color: white; }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.btn:focus-visible, .nav-links a:focus-visible, .search input:focus-visible, .menu-toggle:focus-visible, summary:focus-visible {
 outline: 2px solid var(--cyan); outline-offset: 2px;
}
.menu-toggle, .drawer { display: none; }
.hero { position: relative; min-height: 680px; display: flex; align-items: flex-end; overflow: hidden; }
.hero-photo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero-shade {
 position: relative; z-index: 1; width: 100%;
 background: linear-gradient(180deg, rgba(5, 12, 24, 0.2) 0%, rgba(5, 12, 24, 0.55) 42%, rgba(5, 12, 24, 0.92) 100%);
 padding: 72px 0 28px;
}
.eyebrow { color: var(--cyan); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; font-size: 12px; margin-bottom: 10px; }
.lead { max-width: 860px; color: #d5e4f8; font-size: 17px; margin: 0 0 22px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 28px; }
.series-bar a {
 flex: 0 0 auto; padding: 10px 14px; border-radius: 12px; background: rgba(255,255,255,0.04); border: 1px solid transparent; font-weight: 600; font-size: 14px;
}
.series-bar a:hover { border-color: rgba(103, 231, 255, 0.5); color: var(--cyan); }
.section { padding: 74px 0; }
.section-alt { background: linear-gradient(180deg, rgba(16, 36, 69, 0.35), rgba(6, 16, 29, 0)); }
.section-head { display: flex; justify-content: space-between; gap: 24px; align-items: flex-end; margin-bottom: 22px; }
.section-head h2, .block-title { font-size: 32px; line-height: 1.25; margin: 0 0 8px; }
.section p, .prose { color: var(--muted); }
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.feed-item, .rank, .bento-card, .topic-card, .tree-group, .compare-col, .update-row, .mile, .news-row, .quote, .shield, .qa, .faq-item, .form-card, .sub-copy {
 background: var(--glass); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); backdrop-filter: blur(12px);
}
.feed-item { display: grid; grid-template-columns: 168px 1fr; gap: 14px; padding: 12px; }
.feed-item img, .news-row img, .sub-visual img { width: 100%; height: 120px; object-fit: cover; border-radius: 12px; }
.feed-item h3, .rank h3, .news-row h3, .topic-card h3, .bento-card h3 { margin: 0 0 6px; font-size: 18px; }
.tag, .badge { display: inline-flex; align-items: center; gap: 6px; border-radius: 999px; padding: 3px 8px; font-size: 12px; font-weight: 700; color: #d8f7ff; background: rgba(103, 231, 255, 0.1); border: 1px solid rgba(103, 231, 255, 0.2); }
.rank:hover, .feed-item:hover, .bento-card:hover, .topic-card:hover, .news-row:hover { transform: translateY(-3px); border-color: rgba(103, 231, 255, 0.45); transition: 0.2s ease; }
.bento-card { padding: 18px; min-height: 210px; }
.bento-card.wide { grid-column: span 1; background: linear-gradient(180deg, rgba(61,125,255,0.18), rgba(10,24,48,0.7)); }
.bento-card p, .topic-card p, .tree-group p, .compare-col p, .quote p, .shield p, .qa p { color: var(--muted); }
.topic-card { min-width: 280px; scroll-snap-align: start; padding: 16px; }
.topic-card img { height: 120px; width: 100%; object-fit: cover; border-radius: 12px; margin-bottom: 10px; }
.tree a { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; border-bottom: 1px solid rgba(255,255,255,0.06); color: #e7f2ff; font-weight: 600; }
.tree a:hover { color: var(--cyan); }
.compare-col { padding: 18px; }
.compare-col img { height: 180px; width: 100%; object-fit: cover; border-radius: 14px; margin-bottom: 12px; }
.delta { display: flex; justify-content: space-between; gap: 8px; padding: 8px 0; border-top: 1px solid rgba(255,255,255,0.08); color: var(--ink); font-weight: 600; font-size: 14px; }
.site-footer { border-top: 1px solid var(--line); padding: 42px 0 28px; background: #040b16; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 0.8fr 0.8fr 0.9fr; gap: 22px; }
.foot-grid > div > a:not(.logo) { display: block; color: var(--muted); padding: 4px 0; font-weight: 600; }
.foot-grid > div > a:not(.logo):hover { color: var(--cyan); }
.site-footer strong { display: block; margin-bottom: 8px; }
.site-footer p { color: var(--muted); }
.copy { color: var(--muted); font-size: 13px; margin: 22px 0 0; }
.menu-toggle {
 width: 42px; height: 42px; border-radius: 50%; border: 1px solid var(--line);
 background: rgba(255,255,255,0.04); color: white; align-items: center; justify-content: center;
}
.drawer { position: absolute; left: 0; right: 0; top: 100%; background: rgba(6,16,29,0.97); border-bottom: 1px solid var(--line); padding: 8px 16px 16px; }
.drawer a { display: block; padding: 10px 8px; border-radius: 12px; color: var(--muted); font-weight: 700; }
.drawer a.active { color: #04121f; background: linear-gradient(135deg, var(--cyan), #9ad7ff); }
.drawer a:hover { color: white; background: rgba(103,231,255,0.08); }
.cat-hero { position: relative; overflow: hidden; padding: 36px 0 10px; }
.cat-hero-photo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.32; }
.cat-hero-shade { position: absolute; inset: 0; background: linear-gradient(100deg, rgba(6,16,29,0.94) 8%, rgba(6,16,29,0.78) 48%, rgba(6,16,29,0.62)); }
.cat-hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 22px; align-items: stretch; }
.cat-copy h1 { margin: 0 0 12px; font-size: clamp(34px, 4.6vw, 54px); line-height: 1.12; letter-spacing: -0.03em; }
.cat-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.feature-file { padding: 14px; display: grid; gap: 12px; }
.feature-file img { width: 100%; height: 210px; object-fit: cover; border-radius: 14px; }
.file-meta { display: flex; justify-content: space-between; gap: 8px; color: var(--ink); font-weight: 700; font-size: 14px; }
.metric { background: var(--glass); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px 16px 14px; backdrop-filter: blur(12px); }
.metric i { color: var(--cyan); font-size: 18px; }
.metric strong { display: block; margin-top: 8px; font-size: 30px; line-height: 1.1; color: white; }
.metric span { color: var(--muted); font-size: 13px; }
.update-row { display: flex; gap: 12px; align-items: center; padding: 12px 14px; margin-top: 14px; }
.update-row p { margin: 0; color: #e7f3ff; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.chip { border: 1px solid var(--line); background: rgba(255,255,255,0.04); color: var(--muted); border-radius: 999px; padding: 7px 12px; font-weight: 700; font-size: 13px; }
.chip:hover, .chip:focus-visible { color: white; border-color: var(--cyan); }
.chip.active { color: #04121f; background: linear-gradient(135deg, var(--cyan), #9ad7ff); border-color: transparent; }
.topic-scroller { display: flex; gap: 14px; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 8px; margin-bottom: 16px; }
.topic-scroller::-webkit-scrollbar { height: 8px; }
.topic-scroller::-webkit-scrollbar-thumb { background: rgba(103,231,255,0.35); border-radius: 99px; }
.matrix-layout { display: grid; grid-template-columns: 1.35fr 0.75fr; gap: 16px; }
.bento-card img { width: 100%; height: 150px; object-fit: cover; border-radius: 12px; margin-bottom: 12px; }
.tree-group, .rank { padding: 16px 18px; }
.hot-list { list-style: none; margin: 12px 0 0; padding: 0; }
.hot-list li { display: flex; gap: 12px; align-items: flex-start; padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,0.06); }
.hot-list b { color: var(--cyan); min-width: 28px; }
.hot-list small, .muted { color: var(--muted); display: block; font-size: 13px; }
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.compare-col h3 { margin: 0 0 8px; }
.mile-list { display: grid; gap: 12px; }
.mile { display: grid; grid-template-columns: 150px 1fr; gap: 14px; padding: 16px 18px; align-items: center; }
.mile time { color: var(--cyan); font-weight: 800; }
.mile h3 { margin: 0 0 4px; font-size: 18px; }
.news-list { display: grid; gap: 12px; }
.news-row { display: grid; grid-template-columns: 180px 1fr auto; gap: 14px; padding: 12px; align-items: center; }
.news-row p { margin: 0; }
.assure-grid { display: grid; grid-template-columns: 1.15fr 0.9fr 0.9fr; gap: 14px; }
.shield { padding: 18px; }
.shield i { color: var(--cyan); font-size: 20px; }
.shield h3 { margin: 8px 0; }
.qa-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.qa { padding: 16px 18px; }
.qa h3 { margin: 0 0 6px; font-size: 17px; }
.faq-list { display: grid; gap: 10px; }
.faq-item { padding: 0 16px; }
.faq-item summary { padding: 14px 0; font-weight: 700; cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:after { content: "+"; color: var(--cyan); font-size: 20px; }
.faq-item[open] summary:after { content: "–"; }
.faq-item p { margin-top: 0; }
.request-grid { display: grid; grid-template-columns: 0.86fr 1.14fr; gap: 16px; }
.sub-visual { padding: 12px; }
.sub-visual img { height: 100%; min-height: 280px; object-fit: cover; }
.form-card { padding: 18px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }
.field.full { grid-column: 1 / -1; }
.field span { font-size: 13px; font-weight: 700; }
.field input, .field select, .field textarea {
 background: rgba(255,255,255,0.04); border: 1px solid var(--line); border-radius: 12px; padding: 11px 12px;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid var(--cyan); border-color: transparent; }
.field select option { color: #04121f; }
.form-note { min-height: 1.4em; color: var(--cyan); font-weight: 700; margin: 8px 0 0; }
[hidden] { display: none !important; }
@media (max-width: 1100px) {
 .nav-links { display: none; }
 .menu-toggle { display: inline-flex; }
 .drawer.open { display: block; }
 .search input { width: 120px; }
}
@media (max-width: 1024px) {
 .cat-hero-grid, .matrix-layout, .compare-grid, .request-grid, .assure-grid { grid-template-columns: 1fr; }
 .metric-grid { grid-template-columns: 1fr 1fr; }
 .news-row { grid-template-columns: 150px 1fr; }
 .news-row .row-side { display: none; }
 .foot-grid { grid-template-columns: 1fr 1fr; }
 .section-head h2 { font-size: 28px; }
}
@media (max-width: 768px) {
 .section { padding: 54px 0; }
 .mile, .qa-grid, .form-grid, .feed-item { grid-template-columns: 1fr; }
 .feature-file img, .compare-col img { height: 180px; }
 .nav-wrap { gap: 10px; }
 .logo { min-width: 0; }
}
@media (max-width: 520px) {
 .metric-grid, .foot-grid, .news-row { grid-template-columns: 1fr; }
 .search { display: none; }
 .cat-actions .btn, .form-card .btn { width: 100%; }
 .section-head { flex-direction: column; align-items: flex-start; }
 .cat-copy h1 { font-size: 32px; }
 .update-row { align-items: flex-start; }
}

/* roulang page: category7 */
:root {
  --bg: #06101d;
  --bg-2: #0a1830;
  --bg-3: #102445;
  --ink: #e8f2ff;
  --muted: #b7c8e2;
  --line: rgba(140, 196, 255, 0.22);
  --cyan: #67e7ff;
  --blue: #3d7dff;
  --blue-2: #1aa7ff;
  --glass: rgba(10, 24, 48, 0.62);
  --glass-2: rgba(18, 40, 78, 0.72);
  --radius: 18px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --glow: 0 0 0 1px rgba(120, 220, 255, 0.35), 0 0 28px rgba(61, 125, 255, 0.45);
  --max: 1160px;
  --pad: 22px;
}
/* roulang page: ti-nguyn */
html { scroll-behavior: smooth; }
*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Be Vietnam Pro", sans-serif;
  background: radial-gradient(1200px 500px at 80% -10%, rgba(61, 125, 255, 0.22), transparent 55%), var(--bg);
  color: var(--ink);
  line-height: 1.7;
  font-size: 16px;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font-family: inherit; color: inherit; }
button { cursor: pointer; }
h1, h2, h3, p { overflow-wrap: anywhere; }
.container { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 30;
  background: rgba(6, 16, 29, 0.88);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}
.nav-wrap {
  min-height: 70px;
  display: flex; align-items: center; gap: 18px;
}
.logo { display: flex; flex-direction: column; line-height: 1.05; min-width: 168px; }
.logo-mark { font-weight: 800; letter-spacing: 0.04em; font-size: 20px; color: white; }
.logo-sub { color: var(--cyan); font-size: 12px; font-weight: 600; }
.nav-links { display: flex; align-items: center; gap: 6px; flex: 1; flex-wrap: wrap; }
.nav-links a {
  color: var(--muted); font-size: 13px; font-weight: 600; padding: 8px 8px; border-radius: 999px;
}
.nav-links a:hover, .nav-links a:focus-visible { color: white; background: rgba(103, 231, 255, 0.08); }
.nav-links a.active { color: #04121f; background: linear-gradient(135deg, var(--cyan), #9ad7ff); }
.nav-tools { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.search { display: flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.04); border: 1px solid var(--line); border-radius: 999px; padding: 6px 10px; }
.search input { background: transparent; border: 0; outline: 0; width: 168px; font-size: 13px; }
.search button { background: transparent; border: 0; color: var(--cyan); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 999px; padding: 11px 18px; border: 1px solid transparent; font-weight: 700; transition: 0.2s ease;
}
.btn-glow {
  background: linear-gradient(135deg, #3d7dff, #19c8ff);
  color: white; box-shadow: var(--glow);
}
.btn-glow:hover { transform: translateY(-2px); filter: brightness(1.06); }
.btn-glow:active { transform: translateY(0); }
.btn-ghost { background: rgba(255,255,255,0.04); border-color: var(--line); color: white; }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.btn:focus-visible, .nav-links a:focus-visible, .search input:focus-visible, .menu-toggle:focus-visible, summary:focus-visible, .drawer a:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--cyan); outline-offset: 2px;
}
.menu-toggle, .drawer { display: none; }
.menu-toggle {
  width: 42px; height: 42px; border-radius: 12px;
  border: 1px solid var(--line); background: rgba(255,255,255,0.04); color: white;
  align-items: center; justify-content: center;
}
.drawer { flex-direction: column; gap: 4px; padding: 0 0 14px; }
.drawer a { color: var(--muted); font-weight: 600; padding: 10px 12px; border-radius: 12px; }
.drawer a:hover { color: white; background: rgba(103, 231, 255, 0.08); }
.drawer a.active { color: #04121f; background: linear-gradient(135deg, var(--cyan), #9ad7ff); }
.drawer.open { display: flex; }
.section { padding: 74px 0; }
.section-alt { background: linear-gradient(180deg, rgba(16, 36, 69, 0.35), rgba(6, 16, 29, 0)); }
.section-head { display: flex; justify-content: space-between; gap: 24px; align-items: flex-end; margin-bottom: 22px; }
.section-head h2, .block-title { font-size: 32px; line-height: 1.25; margin: 0 0 8px; }
.section p, .prose { color: var(--muted); }
.eyebrow { color: var(--cyan); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; font-size: 12px; margin: 0 0 10px; }
.lead { max-width: 720px; color: #d5e4f8; font-size: 17px; margin: 0 0 22px; }
.tag, .badge { display: inline-flex; align-items: center; gap: 6px; border-radius: 999px; padding: 3px 8px; font-size: 12px; font-weight: 700; color: #d8f7ff; background: rgba(103, 231, 255, 0.1); border: 1px solid rgba(103, 231, 255, 0.2); }
.feed-item, .rank, .bento-card, .topic-card, .tree-group, .compare-col, .update-row, .mile, .news-row, .quote, .shield, .qa, .faq-item, .form-card, .sub-copy, .stat {
  background: var(--glass); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); backdrop-filter: blur(12px);
}
.feed-item { display: grid; grid-template-columns: 168px 1fr; gap: 14px; padding: 12px; }
.feed-item img, .news-row img, .sub-visual img { width: 100%; height: 120px; object-fit: cover; border-radius: 12px; }
.feed-item h3, .rank h3, .news-row h3, .topic-card h3, .bento-card h3 { margin: 0 0 6px; font-size: 18px; }
.rank:hover, .feed-item:hover, .bento-card:hover, .topic-card:hover, .news-row:hover, .mile:hover, .stat:hover { transform: translateY(-3px); border-color: rgba(103, 231, 255, 0.45); transition: 0.2s ease; }
.bento-card { padding: 18px; min-height: 210px; }
.bento-card.wide { background: linear-gradient(180deg, rgba(61,125,255,0.18), rgba(10,24,48,0.7)); }
.bento-card p, .topic-card p, .tree-group p, .compare-col p, .quote p, .shield p, .qa p, .mile p, .update-row p { color: var(--muted); }
.topic-card { min-width: 280px; scroll-snap-align: start; padding: 16px; }
.topic-card img { height: 120px; width: 100%; object-fit: cover; border-radius: 12px; margin-bottom: 10px; }
.tree a { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; border-bottom: 1px solid rgba(255,255,255,0.06); color: #e7f2ff; font-weight: 600; }
.tree a:hover { color: var(--cyan); }
.compare-col { padding: 18px; }
.compare-col img { height: 180px; width: 100%; object-fit: cover; border-radius: 14px; margin-bottom: 12px; }
.delta { display: flex; justify-content: space-between; gap: 8px; padding: 8px 0; border-top: 1px solid rgba(255,255,255,0.08); color: #d5e6fa; font-size: 14px; }
.delta span { color: var(--muted); }
.res-mast { position: relative; overflow: hidden; }
.mast-photo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.mast-shade {
  position: relative; z-index: 1;
  background: linear-gradient(90deg, rgba(5,12,24,0.92) 0%, rgba(5,12,24,0.78) 48%, rgba(5,12,24,0.55) 100%);
  padding: 54px 0 36px;
}
.mast-grid { display: grid; grid-template-columns: 1.25fr 0.75fr; gap: 22px; align-items: end; }
.mast-title { margin: 0 0 12px; font-size: clamp(32px, 4.6vw, 52px); line-height: 1.12; letter-spacing: -0.03em; }
.hero-actions, .mast-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 18px; }
.chip-row { display: flex; gap: 8px; flex-wrap: wrap; }
.chip-row a { padding: 8px 12px; border-radius: 999px; border: 1px solid var(--line); background: rgba(8,18,36,0.55); font-size: 13px; font-weight: 600; color: #e7f4ff; }
.chip-row a:hover { border-color: var(--cyan); color: var(--cyan); }
.mast-side { display: grid; gap: 10px; }
.stat { padding: 14px 16px; }
.stat b { display: block; font-size: 28px; line-height: 1.1; color: white; }
.stat span { color: var(--muted); font-size: 13px; }
.ticker { display: flex; gap: 10px; overflow: auto; padding-bottom: 4px; }
.ticker span { flex: 0 0 auto; border: 1px solid var(--line); background: rgba(8,20,40,0.72); border-radius: 999px; padding: 7px 12px; font-size: 13px; color: #d7ebff; }
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.bento { display: grid; grid-template-columns: 1.35fr 1fr 1fr; gap: 14px; }
.bento-card img { width: 100%; height: 128px; object-fit: cover; border-radius: 12px; margin-bottom: 12px; }
.bento-card.feature { grid-row: span 2; min-height: 100%; }
.bento-card.feature img { height: 230px; }
.meta-line { display: flex; justify-content: space-between; gap: 8px; color: #d5e7fb; font-size: 13px; font-weight: 600; margin-top: 8px; }
.update-list, .rank-list, .news-list, .mile-list, .faq-list { display: grid; gap: 12px; }
.update-row { display: grid; grid-template-columns: 120px 1fr auto; gap: 14px; align-items: center; padding: 14px 16px; }
.update-row strong { color: white; }
.rank { display: grid; grid-template-columns: auto 1fr auto; gap: 14px; align-items: center; padding: 14px 16px; }
.rank-no { width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; font-weight: 800; color: #04121f; background: linear-gradient(135deg, var(--cyan), #9ad7ff); }
.mile-list { position: relative; }
.mile { padding: 16px 18px 16px 22px; border-left: 3px solid rgba(103, 231, 255, 0.7); }
.mile time { color: var(--cyan); font-size: 13px; font-weight: 700; }
.news-row { display: grid; grid-template-columns: 168px 1fr auto; gap: 14px; align-items: center; padding: 12px; }
.h-scroll { display: flex; gap: 14px; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 8px; }
.h-scroll::-webkit-scrollbar { height: 8px; }
.h-scroll::-webkit-scrollbar-thumb { background: rgba(103,231,255,0.35); border-radius: 999px; }
.compare-grid { display: grid; grid-template-columns: 1fr 1fr 0.8fr; gap: 14px; }
.shield { padding: 18px; }
.shield h3, .form-card h3, .qa h3 { margin: 0 0 8px; }
.bottom-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 18px; align-items: start; }
.faq-item { padding: 0 16px; }
.faq-item summary { cursor: pointer; font-weight: 700; padding: 14px 0; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item p { margin: 0 0 14px; }
.form-card { padding: 18px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.field { display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 600; color: #d5e6f8; }
.field.full { grid-column: 1 / -1; }
.field input, .field select, .field textarea {
  background: rgba(4, 12, 24, 0.55); border: 1px solid var(--line); border-radius: 12px; padding: 11px 12px; font-size: 14px; font-weight: 500;
}
.field textarea { min-height: 110px; resize: vertical; }
.form-note { margin: 12px 0 0; color: var(--cyan); font-weight: 600; }
.site-footer { border-top: 1px solid var(--line); padding: 42px 0 28px; background: #050d18; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 22px; }
.foot-grid p { color: var(--muted); margin: 12px 0 0; }
.foot-grid strong { display: block; margin-bottom: 8px; }
.foot-grid a { display: block; color: var(--muted); padding: 4px 0; font-size: 14px; }
.foot-grid a.logo { display: flex; }
.foot-grid a:hover { color: var(--cyan); }
.copy { color: var(--muted); font-size: 13px; margin: 22px 0 0; border-top: 1px solid var(--line); padding-top: 16px; }
@media (max-width: 1024px) {
  .nav-links { display: none; }
  .menu-toggle { display: inline-flex; }
  .search input { width: 120px; }
  .mast-grid, .bento, .compare-grid, .bottom-grid { grid-template-columns: 1fr 1fr; }
  .bento-card.feature { grid-row: auto; grid-column: 1 / -1; }
  .bento-card.feature img { height: 180px; }
  .metric-grid { grid-template-columns: 1fr 1fr; }
  .news-row, .update-row { grid-template-columns: 140px 1fr; }
  .news-row .badge, .update-row .badge { grid-column: 2; justify-self: start; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .section-head { flex-direction: column; align-items: flex-start; }
  .section-head h2 { font-size: 28px; }
  .mast-grid, .compare-grid, .bottom-grid, .form-grid { grid-template-columns: 1fr; }
  .mast-shade { background: linear-gradient(180deg, rgba(5,12,24,0.45), rgba(5,12,24,0.92)); }
  .nav-wrap { min-height: 64px; }
}
@media (max-width: 520px) {
  .container { width: min(var(--max), calc(100% - 20px)); }
  .logo { min-width: 0; }
  .nav-tools .search { display: none; }
  .metric-grid, .bento, .foot-grid { grid-template-columns: 1fr; }
  .feed-item, .news-row, .update-row, .rank { grid-template-columns: 1fr; }
  .news-row .badge, .update-row .badge { grid-column: auto; }
  .section { padding: 46px 0; }
  .mast-title { font-size: 32px; }
  .btn { width: 100%; }
  .mast-actions { flex-direction: column; }
}