:root {
  --bg: #FFFFFF;
  --surface: #FFFFFF;
  --surface-2: #F6F9FE;
  --line: #DCE7F3;
  --line-strong: #C3D5EA;
  --ink: #0F2548;
  --ink-2: #2B4064;
  --ink-3: #4F5F77;
  --ink-4: #5C6B80;
  --navy: #0D47A1;
  --navy-2: #1565C0;
  --navy-soft: #E6F0FB;
  --sky: #1E88E5;
  --blue-soft: #EDF5FD;
  --blue-line: #B8D7F3;
  --orange: #F57C00;
  --orange-2: #FFA726;
  --orange-soft: #FFF6EA;
  --orange-line: #F6C995;
  --gold: #A84600;
  --gold-2: #8F3C00;
  --gold-soft: #FFF3E3;
  --amber: #FFA726;
  --coral: #F57C00;
  --teal: #1C9A9C;
  --teal-ink: #12706F;
  --teal-soft: #E0F3F2;
  --green: #1F7A48;
  --green-soft: #E3F4EA;
  --red: #C62828;
  --red-soft: #FDECEA;
  --violet: #5C6BC0;
  --violet-ink: #3949AB;
  --violet-soft: #E8EAF6;
  --c1: #F57C00; --c1-ink: #B54D00; --c1-soft: #FFF3E3; --c1-g1: #FFA726; --c1-g2: #EF6C00;
  --c2: #1C9A9C; --c2-ink: #12706F; --c2-soft: #E0F3F2; --c2-g1: #34C3B8; --c2-g2: #178C9C;
  --c3: #5C6BC0; --c3-ink: #3949AB; --c3-soft: #E8EAF6; --c3-g1: #7986CB; --c3-g2: #3F51B5;
  --c4: #2E9E62; --c4-ink: #1F7A48; --c4-soft: #E3F4EA; --c4-g1: #4CC47E; --c4-g2: #23865A;
  --accent: var(--navy-2); --accent-ink: var(--navy); --accent-soft: var(--navy-soft); --accent-g1: #1E88E5; --accent-g2: #0D47A1;
  --grad-navy: linear-gradient(120deg, #0A3483 0%, #0D47A1 45%, #1565C0 100%);
  --grad-cta: linear-gradient(135deg, #FFB547 0%, #F57C00 100%);
  --grad-bar: linear-gradient(90deg, #0D47A1 0%, #1257B5 50%, #1976D2 100%);
  --grad-label: linear-gradient(90deg, #0D47A1 0%, #1976D2 100%);
  --grad-label-orange: linear-gradient(90deg, #D84315 0%, #EF6C00 100%);
  --font-sans: "Be Vietnam Pro", "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  --font-display: "Be Vietnam Pro", "Segoe UI", system-ui, sans-serif;
  --font-serif: "Lora", Georgia, "Times New Roman", serif;
  --font-ipa: "Charis SIL", "Noto Sans", "Segoe UI", "Lucida Sans Unicode", sans-serif;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 1px 2px rgba(13, 71, 161, .05), 0 10px 26px rgba(13, 71, 161, .07);
  --shadow-hover: 0 2px 6px rgba(13, 71, 161, .08), 0 22px 44px rgba(13, 71, 161, .16);
  --max: 1200px;
  --header-h: 115px;
}
.acc-1 { --accent: var(--c1); --accent-ink: var(--c1-ink); --accent-soft: var(--c1-soft); --accent-g1: var(--c1-g1); --accent-g2: var(--c1-g2); }
.acc-2 { --accent: var(--c2); --accent-ink: var(--c2-ink); --accent-soft: var(--c2-soft); --accent-g1: var(--c2-g1); --accent-g2: var(--c2-g2); }
.acc-3 { --accent: var(--c3); --accent-ink: var(--c3-ink); --accent-soft: var(--c3-soft); --accent-g1: var(--c3-g1); --accent-g2: var(--c3-g2); }
.acc-4 { --accent: var(--c4); --accent-ink: var(--c4-ink); --accent-soft: var(--c4-soft); --accent-g1: var(--c4-g1); --accent-g2: var(--c4-g2); }

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans); font-size: 16.5px; line-height: 1.6; color: var(--ink); background: var(--bg);
  min-height: 100vh; display: flex; flex-direction: column;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--navy-2); text-decoration: none; }
a:hover { color: var(--ink); }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: 0; }
input, select, textarea { font: inherit; color: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, [tabindex]:focus-visible { outline: 3px solid var(--orange); outline-offset: 2px; }

h1, h2, h3, .serif { font-family: var(--font-display); font-weight: 800; line-height: 1.2; letter-spacing: -.015em; text-wrap: balance; color: var(--ink); }
h1 { font-size: clamp(27px, 3.6vw, 38px); }
h2 { font-size: clamp(21px, 2.4vw, 25px); font-weight: 800; color: var(--navy); }
h3 { font-size: 19px; font-weight: 700; }
sub, sup { font-size: .72em; line-height: 0; }
.sec-title { display: inline-block; padding-bottom: 6px; color: var(--navy); background: linear-gradient(var(--orange), var(--orange)) left bottom / 100% 3px no-repeat; }
p, li, td, dd { text-wrap: pretty; }

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 40px; }
@media (min-width: 1500px) {
  :root { --max: 1460px; }
  body { font-size: 17px; }
}
@media (min-width: 1800px) {
  :root { --max: 1600px; }
}
main { flex: 1; padding: 26px 0 48px; }

.vi { color: var(--ink); }
.en { color: var(--gold); font-family: var(--font-serif); font-style: italic; }
[data-lang="en"] .en { font-family: inherit; font-style: normal; color: inherit; }
.bi > .en { display: block; margin-top: 3px; }
.ipa { font-family: var(--font-ipa); letter-spacing: .1px; color: var(--ink-3); }
.muted { color: var(--ink-3); }
.small { font-size: 16px; }
.eyebrow { font-size: 15px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; color: var(--gold); }
.num-dot { width: 30px; height: 30px; flex: none; border-radius: 50%; display: inline-grid; place-items: center; background: var(--sky); color: #fff; font-size: 16.5px; font-weight: 800; box-shadow: 0 4px 10px rgba(30, 136, 229, .3); }
.nw { white-space: nowrap; }

.ph-header { position: sticky; top: 0; z-index: 50; }
.ph-top { background: var(--surface); border-bottom: 1px solid var(--line); }
.ph-top .wrap { display: flex; align-items: center; gap: 24px; height: 64px; }
.ph-logo { display: inline-flex; align-items: center; gap: 10px; flex: none; color: var(--ink); }
.ph-logo:hover { color: var(--ink); }
.ph-logo .word { font-size: 22px; font-weight: 700; letter-spacing: -.5px; }
.ph-logo .word { color: var(--navy); font-weight: 800; }
.ph-logo .word b { color: #EF6C00; font-weight: 800; }
.ph-logo .kntt { border: 1.5px solid var(--navy-2); color: var(--navy); font-size: 13px; font-weight: 700; letter-spacing: .6px; padding: 2px 6px; border-radius: 6px; white-space: nowrap; }
.ph-metric { display: flex; align-items: center; gap: 10px; flex: none; margin-left: auto; color: var(--ink); }
.ph-metric:hover { color: var(--ink); }
.ph-metric .ic { width: 34px; height: 34px; border-radius: 50%; background: var(--orange-soft); border: 2px solid var(--orange-line); display: grid; place-items: center; color: #E65100; }
.ph-metric .lbl { display: block; font-size: 14px; font-weight: 600; letter-spacing: .9px; text-transform: uppercase; color: var(--gold); white-space: nowrap; }
.ph-metric .num { display: flex; align-items: center; gap: 8px; margin-top: 2px; }
.ph-metric .num .n { font-family: var(--font-display); font-size: 16.5px; font-weight: 700; white-space: nowrap; color: var(--navy); }
.ph-metric .bar { width: 58px; height: 5px; border-radius: 3px; background: #FDE3C4; overflow: hidden; }
.ph-metric .bar i { display: block; height: 100%; border-radius: 3px; background: var(--grad-cta); }
.ph-lang { display: inline-flex; align-items: center; flex: none; background: var(--blue-soft); border: 1px solid var(--blue-line); border-radius: 22px; padding: 3px; }
.ph-lang button { min-height: 40px; padding: 0 14px; border-radius: 18px; font-size: 16px; white-space: nowrap; color: var(--ink-2); transition: background .25s ease, color .25s ease; }
.ph-lang button:hover { background: #DCEBFA; color: var(--ink); }
.ph-lang button.active { background: var(--grad-label); color: #fff; font-weight: 700; box-shadow: 0 3px 10px rgba(13, 71, 161, .3); }
.ph-lang .short { display: none; }
@media (min-width: 721px) and (max-width: 1199px) {
  .ph-top .wrap { gap: 14px; }
  .ph-lang .long { display: none; }
  .ph-lang .short { display: inline; }
  .ph-lang button { padding: 0 10px; }
}

.ph-tim { position: relative; flex: 1 1 auto; min-width: 240px; max-width: 470px; }
.ph-tim-o { display: block; width: 100%; height: 44px; padding: 0 52px 0 20px; border-radius: 999px; border: 1.5px solid var(--line-strong); background: var(--surface-2); font-size: 16px; color: var(--ink); outline: none; transition: border-color .2s, box-shadow .2s, background .2s; }
.ph-tim-o:hover { border-color: #8FB8E4; background: var(--surface); }
.ph-tim-o:focus { border-color: var(--navy-2); background: var(--surface); box-shadow: 0 0 0 4px rgba(21, 101, 192, .15); outline: none; }
.ph-tim-o::placeholder { color: var(--ink-4); }
.ph-tim-o::-webkit-search-cancel-button { display: none; }
.ph-tim-nut { position: absolute; right: 2px; top: 2px; width: 40px; height: 40px; border-radius: 50%; background: var(--grad-label); display: grid; place-items: center; color: #fff; box-shadow: 0 4px 10px rgba(13, 71, 161, .3); transition: transform .2s, box-shadow .2s; }
.ph-tim-nut:hover { transform: scale(1.08); color: #fff; box-shadow: 0 6px 14px rgba(13, 71, 161, .42); }
.ph-tim-xoa { position: absolute; right: 46px; top: 7px; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; color: var(--ink-3); }
.ph-tim-xoa:hover { background: var(--navy-soft); }
.ph-tim-kq { position: absolute; left: 0; top: 52px; width: min(600px, calc(100vw - 32px)); background: var(--surface); border-radius: 18px; border: 1px solid var(--line); box-shadow: 0 22px 50px rgba(20, 32, 66, .2); padding: 8px; z-index: 60; }
.ph-kq { display: flex; align-items: center; gap: 12px; padding: 9px 10px; border-radius: 12px; border: 1px solid transparent; color: var(--ink); transition: background .2s, border-color .2s; }
.ph-kq:hover, .ph-kq:focus-visible { background: var(--blue-soft); border-color: var(--blue-line); color: var(--ink); }
.ph-kq .loai { flex: none; min-width: 66px; text-align: center; padding: 3px 8px; border-radius: 999px; font-size: 14px; font-weight: 700; white-space: nowrap; background: var(--accent-soft); color: var(--accent-ink); }
.ph-kq .chinh { display: block; font-size: 16.5px; font-weight: 600; }
.ph-kq .phu { display: block; font-size: 15.5px; }
.ph-kq .noi { flex: none; margin-left: auto; font-size: 15px; color: var(--ink-3); white-space: nowrap; }
.ph-kq-dem { margin: 6px 10px 4px; font-size: 15px; color: var(--ink-3); }
.ph-kq-rong { padding: 12px 12px 10px; }
.ph-kq-rong p { font-size: 16.5px; font-weight: 600; margin-bottom: 8px; }
.ph-kq-rong .goi { font-size: 16px; font-weight: 400; color: var(--ink-3); }
.ph-kq-rong .chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.ph-kq-rong .chips a { padding: 6px 12px; border-radius: 999px; background: var(--orange-soft); border: 1px solid var(--orange-line); color: var(--c1-ink); font-size: 16px; font-weight: 600; }
.ph-kq-rong .chips a:hover { background: #FFE6C7; }

.ph-bar { position: relative; background: var(--surface); box-shadow: 0 6px 16px rgba(13, 71, 161, .06); }
.ph-bar::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 3px; background: linear-gradient(90deg, var(--navy-2) 0 72%, var(--orange) 72% 100%); pointer-events: none; }
.ph-bar .wrap { display: flex; align-items: stretch; height: 48px; }
.ph-mm { display: flex; }
.ph-bar-i { position: relative; height: 48px; display: inline-flex; align-items: center; gap: 7px; padding: 0 14px; color: var(--navy); font-size: 17.5px; font-weight: 700; white-space: nowrap; transition: background .2s, color .2s; }
.ph-bar-i:hover, .ph-mm:hover > .ph-bar-i, .ph-mm:focus-within > .ph-bar-i { background: var(--blue-soft); color: var(--navy); }
.ph-bar-i::after { content: ""; position: absolute; left: 12px; right: 12px; bottom: 3px; height: 4px; border-radius: 4px 4px 0 0; background: var(--orange); transform: scaleX(0); z-index: 1; transition: transform .25s ease; }
.ph-bar-i:hover::after, .ph-mm:hover > .ph-bar-i::after, .ph-mm:focus-within > .ph-bar-i::after, .ph-bar-on::after { transform: scaleX(1); }
.ph-bar-on { background: var(--blue-soft); color: var(--navy-2); }
.ph-bar-i .lb { display: flex; flex-direction: column; line-height: 1.15; }
.ph-bar .wrap > a:first-child .icon { width: 25px; height: 25px; stroke-width: 2.1; }
.ph-bar-sub { display: none; font-family: var(--font-serif); font-style: italic; font-size: 14px; font-weight: 500; color: var(--gold); }
[data-lang="bi"] .ph-bar-sub { display: block; }
.ph-mm-v { display: flex; transition: transform .25s; color: var(--sky); }
.ph-mm:hover .ph-mm-v, .ph-mm:focus-within .ph-mm-v { transform: rotate(180deg); }
.ph-bar .spacer { flex: 1; }
.ph-bar-i .tn { width: 26px; height: 26px; border-radius: 8px; background: linear-gradient(135deg, var(--c1-g1), var(--c1-g2)); display: grid; place-items: center; color: #fff; }
.ph-mm-p {
  position: absolute; left: 40px; right: 40px; top: 48px; background: var(--surface); border-radius: 0 0 22px 22px; border-top: 3px solid var(--orange);
  box-shadow: 0 28px 60px rgba(20, 32, 66, .24); padding: 22px 26px 20px; opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity .2s, transform .2s, visibility 0s linear .2s; z-index: 55; text-align: left; font-weight: 400; white-space: normal;
}
.ph-mm-p { max-height: calc(100vh - 128px); overflow-y: auto; overscroll-behavior: contain; }
.ph-mm:hover .ph-mm-p, .ph-mm:focus-within .ph-mm-p, .ph-mm.mo .ph-mm-p { opacity: 1; visibility: visible; transform: none; transition: opacity .22s ease .05s, transform .22s ease .05s, visibility 0s linear 0s; }
.ph-mm-h { margin: 0 0 10px; font-size: 15px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; color: var(--gold); }
.ph-mm-l { display: flex; align-items: flex-start; gap: 10px; padding: 9px 10px; min-height: 40px; border-radius: 12px; border: 1px solid transparent; color: var(--ink); font-size: 16.5px; line-height: 1.45; transition: background .2s, border-color .2s, color .2s; }
.ph-mm-l:hover, .ph-mm-l:focus-visible { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-ink); }
.ph-mm-l .so { flex: none; min-width: 26px; height: 22px; margin-top: 1px; border-radius: 7px; background: var(--accent-soft); color: var(--accent-ink); font-size: 15px; font-weight: 700; display: grid; place-items: center; }
.ph-mm-l .ten { min-width: 0; }
.ph-mm-l .ten .en { display: block; font-size: 15.5px; line-height: 1.35; }
[data-lang="vi"] .ph-mm-l .ten .en, [data-lang="en"] .ph-mm-l .ten .en { display: none; }
.ph-mm-l .ic { width: 32px; height: 32px; flex: none; border-radius: 10px; background: var(--accent-soft); color: var(--accent-ink); display: grid; place-items: center; }
.ph-mm-l .ic.big { width: 38px; height: 38px; border-radius: 12px; background: linear-gradient(135deg, var(--accent-g1), var(--accent-g2)); color: #fff; box-shadow: 0 6px 14px rgba(31, 41, 51, .16); }
.ph-mm-l .ic.g { width: 54px; height: 54px; border-radius: 16px; color: #fff; box-shadow: 0 8px 18px rgba(31, 41, 51, .18); }
.ph-mm-l .meta { flex: none; margin-left: auto; font-size: 15.5px; color: var(--ink-3); white-space: nowrap; }
.ph-mm-l .h { display: block; font-weight: 600; }
.ph-mm-l .h.big { font-family: var(--font-display); font-size: 17px; font-weight: 800; }
.ph-mm-l .cap { display: block; font-size: 14px; font-weight: 700; letter-spacing: .6px; text-transform: uppercase; color: var(--accent-ink); }
.ph-mm-cols { display: grid; gap: 16px; }
.ph-mm-cols.c4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.ph-mm-cols.c3 { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.ph-mm-rule { height: 2px; border-radius: 1px; background: linear-gradient(90deg, var(--accent-g1), rgba(255, 255, 255, 0)); margin: 6px 8px; }
.ph-mm-more { margin: 6px 10px 0; font-size: 15.5px; color: var(--ink-4); }
.ph-mm-foot { margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--line); display: flex; align-items: center; gap: 16px; }
.ph-mm-foot .ph-mm-l { flex: 1; align-items: center; }
.ph-mm-box { border-radius: 18px; padding: 16px 18px; background: var(--orange-soft); border: 1.5px solid var(--orange-line); }
.ph-mm-box.blue { background: var(--blue-soft); border-color: var(--blue-line); }
.ph-mm-box .word { font-family: var(--font-serif); font-style: italic; font-size: 20px; font-weight: 600; color: var(--gold); }
.ph-mm-box p { font-size: 16px; line-height: 1.55; color: var(--ink-2); }
.ph-mm-tag { display: inline-flex; align-items: center; gap: 6px; padding: 5px 10px; border-radius: 999px; font-size: 15.5px; font-weight: 600; white-space: nowrap; }

.ph-mob { display: none; }
.ph-tabs { display: none; }
.ph-strip { display: none; }
.ph-mob-search { display: none; }

.ph-footer { position: relative; background: var(--surface); padding: 22px 0 24px; font-size: 16px; color: var(--navy); }
.ph-footer::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3px; background: linear-gradient(90deg, var(--navy-2) 0 72%, var(--orange) 72% 100%); }
.ph-footer p:first-child { font-weight: 600; }
.ph-footer .wrap { display: flex; align-items: flex-start; justify-content: space-between; gap: 40px; }
.ph-footer p + p { margin-top: 4px; font-size: 15.5px; color: var(--ink-3); }
.ph-footer nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px 26px; flex: none; }
.ph-footer nav a { display: inline-flex; align-items: center; min-height: 32px; white-space: nowrap; }

.card { background: var(--surface); border: 1.5px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); transition: transform .25s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease; }
.card.soft { background: var(--surface-2); }
a.card:hover, .card.lift:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
a.card { color: inherit; }
.card-title { font-family: var(--font-display); font-size: 20px; font-weight: 800; color: var(--navy); }
.o { border: 1.5px solid var(--line); transition: background .25s ease, border-color .25s ease, transform .25s ease, box-shadow .25s ease; }
.o:hover { background: var(--accent-soft); border-color: var(--accent); transform: translateY(-3px); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; padding: 0 22px; border-radius: 999px;
  font-weight: 700; font-size: 16.5px; line-height: 1.2; background: var(--navy); color: #fff; border: 1px solid var(--navy); white-space: nowrap;
  transition: background .2s, transform .2s, box-shadow .2s;
}
.btn:hover { background: var(--navy-2); color: #fff; transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn { background: var(--grad-label); border-color: var(--navy); box-shadow: 0 6px 16px rgba(13, 71, 161, .22); }
.btn:hover { background: var(--navy-2); }
.btn.gold, .btn.glow { background: var(--grad-cta); border-color: transparent; color: var(--ink); box-shadow: 0 8px 20px rgba(245, 124, 0, .3); }
.btn.gold:hover, .btn.glow:hover { color: var(--ink); box-shadow: 0 12px 26px rgba(245, 124, 0, .4); }
.btn.outline { background: var(--surface); color: var(--navy); border: 1.5px solid var(--blue-line); box-shadow: none; }
.btn.outline:hover { background: var(--blue-soft); color: var(--navy); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--navy-2); padding-inline: 10px; box-shadow: none; }
.btn.ghost:hover { background: var(--navy-soft); color: var(--navy); transform: none; }
.btn.accent { background: var(--accent-ink); border-color: var(--accent-ink); box-shadow: none; }
.btn.sm { min-height: 38px; padding: 0 16px; font-size: 16px; }
.btn.block { width: 100%; }
.btn:disabled, .btn.disabled { background: #E3EAF3; border-color: #E3EAF3; color: var(--ink-3); cursor: not-allowed; transform: none; box-shadow: none; }

.pill { display: inline-flex; align-items: center; gap: 8px; min-height: 40px; padding: 0 16px; border-radius: 999px; border: 1.5px solid var(--line-strong); background: var(--surface); font-size: 16px; font-weight: 600; color: var(--ink-2); white-space: nowrap; transition: background .2s, border-color .2s, color .2s; }
.pill:hover { border-color: var(--navy-2); color: var(--navy); background: var(--blue-soft); }
.pill.active { background: var(--navy); border-color: var(--navy); color: #fff; }
.pill.active.acc-1, .pill.active.acc-2, .pill.active.acc-3, .pill.active.acc-4 { background: var(--accent-ink); border-color: var(--accent-ink); }
.pill .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--accent); }
.pill.active .dot { background: #fff; }
.pill.gold { background: var(--orange-soft); border-color: var(--orange-line); color: var(--gold); }
.pill:disabled { opacity: .5; cursor: not-allowed; }
.pills { display: flex; flex-wrap: wrap; gap: 8px; }

.tag { display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; border-radius: 999px; font-size: 14px; font-weight: 600; background: #EAF1FA; color: var(--ink-2); white-space: nowrap; }
.tag.navy { background: var(--navy-soft); color: var(--navy); }
.tag.gold { background: var(--orange-soft); color: var(--gold); box-shadow: inset 0 0 0 1px var(--orange-line); }
.tag.green { background: var(--green-soft); color: var(--green); }
.tag.acc { background: var(--accent-soft); color: var(--accent-ink); }

.badge { display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px; border-radius: 999px; font-size: 14px; font-weight: 700; letter-spacing: .8px; text-transform: uppercase; background: var(--accent-soft); color: var(--accent-ink); }

.progress { height: 6px; border-radius: 3px; background: #E1EAF5; overflow: hidden; }
.progress > i { display: block; height: 100%; border-radius: 3px; background: linear-gradient(90deg, var(--accent-g1), var(--accent-g2)); transition: width .4s; }
.progress.gold > i { background: var(--grad-cta); }

.icon-tile { width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center; color: #fff; flex: none; box-shadow: 0 8px 18px rgba(13, 71, 161, .18); background: linear-gradient(135deg, var(--accent-g1), var(--accent-g2)); }
.icon-tile svg { width: 22px; height: 22px; }
.icon-tile.sm { width: 36px; height: 36px; border-radius: 11px; }
.icon-tile.sm svg { width: 18px; height: 18px; }
.icon-tile.lg { width: 64px; height: 64px; border-radius: 18px; }
.icon-tile.lg svg { width: 30px; height: 30px; }
.tone-1 { background: linear-gradient(135deg, var(--c1-g1), var(--c1-g2)); }
.tone-2 { background: linear-gradient(135deg, var(--c2-g1), var(--c2-g2)); }
.tone-3 { background: linear-gradient(135deg, var(--c3-g1), var(--c3-g2)); }
.tone-4 { background: linear-gradient(135deg, var(--c4-g1), var(--c4-g2)); }
.tone-navy { background: linear-gradient(135deg, #1E88E5, #0D47A1); }
.tone-gold { background: var(--grad-cta); }
.tone-teal { background: linear-gradient(135deg, #34C3B8, #178C9C); }
.tone-violet { background: linear-gradient(135deg, #7986CB, #3F51B5); }
.ph-mm-l .ic.tone-1 { background: linear-gradient(135deg, var(--c1-g1), var(--c1-g2)); }
.ph-mm-l .ic.tone-2 { background: linear-gradient(135deg, var(--c2-g1), var(--c2-g2)); }
.ph-mm-l .ic.tone-3 { background: linear-gradient(135deg, var(--c3-g1), var(--c3-g2)); }
.ph-mm-l .ic.tone-4 { background: linear-gradient(135deg, var(--c4-g1), var(--c4-g2)); }
.ph-mm-l .ic.tone-navy { background: linear-gradient(135deg, #1E88E5, #0D47A1); }
.ph-mm-l .ic.tone-gold { background: var(--grad-cta); }
.ph-mm-l .ic.tone-teal { background: linear-gradient(135deg, #34C3B8, #178C9C); }
.ph-mm-l .ic.tone-violet { background: linear-gradient(135deg, #7986CB, #3F51B5); }
.tone-cta { background: var(--grad-cta); color: var(--ink); }

.grid { display: grid; gap: 18px; }
.grid.c2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.c3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.c4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid.c5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.stack { display: flex; flex-direction: column; gap: 12px; }
.row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.between { justify-content: space-between; }
.section { margin-top: 30px; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
.section-head h2 { font-size: 25px; display: inline-block; padding-bottom: 6px; color: var(--navy); background: linear-gradient(var(--orange), var(--orange)) left bottom / 100% 3px no-repeat; }
.section-head a { display: inline-flex; align-items: center; gap: 6px; min-height: 36px; font-size: 16.5px; font-weight: 600; }

.search { display: flex; align-items: center; gap: 10px; background: var(--surface); border: 1px solid var(--line-strong); border-radius: 24px; padding: 0 16px; min-height: 48px; }
.search input { flex: 1; border: 0; outline: 0; background: transparent; font-size: 16.5px; min-width: 0; }
.search input::placeholder { color: var(--ink-4); }
.search svg { color: var(--ink-4); flex: none; }

.icon { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.icon.sm { width: 15px; height: 15px; }
hr.sep { border: 0; border-top: 1px solid var(--line); margin: 16px 0; }
.notice { background: var(--blue-soft); border: 1.5px dashed var(--blue-line); border-radius: 14px; padding: 12px 16px; font-size: 16px; color: var(--ink-2); }
.empty { padding: 32px; text-align: center; color: var(--ink-3); }
.math { font-family: var(--font-serif); font-size: 18px; font-weight: 600; font-style: italic; letter-spacing: .01em; color: var(--navy); }
.mono { font-family: "JetBrains Mono", Consolas, "Courier New", monospace; }

.page-hero { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) auto; grid-template-rows: auto auto auto 1fr; column-gap: 28px; row-gap: 12px; align-items: start; margin-bottom: 26px; color: var(--ink); }
.page-hero > div:first-child { display: contents; }
.page-hero h1 { grid-row: 1; grid-column: 1 / -1; position: relative; overflow: hidden; min-height: 70px; display: flex; align-items: center; margin: 0; padding: 12px 290px 12px 88px; border-radius: 16px 16px 16px 16px; background: var(--grad-bar); color: #fff; text-transform: uppercase; letter-spacing: .3px; font-size: clamp(22px, 2.5vw, 30px); line-height: 1.2; box-shadow: 0 10px 24px rgba(13, 71, 161, .16); }
.page-hero h1::before { content: ""; position: absolute; left: 16px; top: 50%; width: 54px; height: 54px; margin-top: -27px; border-radius: 50%; background: #fff var(--hero-ic, none) center / 28px no-repeat; box-shadow: 0 0 0 3px #90CAF9, 0 4px 12px rgba(4, 22, 66, .25); }
.page-hero h1::after { content: ""; position: absolute; top: 0; bottom: 0; right: -40px; width: 300px; background: linear-gradient(90deg, #fff 0 4px, #2F80D8 4px, #4B97E4 100%); border-left: 12px solid var(--orange); transform: skewX(-24deg); }
.page-hero .eyebrow { grid-row: 1; grid-column: 1 / -1; justify-self: end; align-self: center; position: relative; z-index: 2; max-width: 220px; margin-right: 22px; padding: 0 0 5px; border-bottom: 2px solid rgba(255, 255, 255, .85); color: #fff; font-size: 15.5px; font-weight: 600; letter-spacing: 1px; line-height: 1.45; text-transform: uppercase; text-align: left; }
.page-hero .sub-en { grid-column: 1; font-family: var(--font-serif); font-style: italic; font-size: 19px; color: var(--gold); }
.page-hero p.lead { grid-column: 1; color: var(--ink-2); font-size: 16.5px; line-height: 1.7; max-width: 760px; }
.page-hero > :nth-child(2):not(h1):not(p) { grid-column: 2; grid-row: 2 / 5; align-self: start; }
.page-hero .ico { display: none; }
.page-hero .spacer { display: none; }
.hero-panel { position: relative; overflow: hidden; background: linear-gradient(180deg, #FFFFFF 0%, #F5F9FE 100%); border: 1.5px solid var(--line); border-radius: 26px; padding: 40px 48px 36px; box-shadow: var(--shadow); color: var(--ink); }
.hero-panel::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 6px; background: linear-gradient(90deg, var(--navy) 0%, var(--navy-2) 70%, var(--orange) 70% 100%); }
.hero-panel::after { content: ""; position: absolute; top: -20px; right: 34px; width: 22px; height: 90px; background: var(--orange-2); transform: skewX(-24deg); box-shadow: -34px 0 0 var(--navy-2); opacity: .9; }
.hero-panel > * { position: relative; z-index: 1; }
.hero-panel h1 { color: var(--navy); }
.hero-panel .eyebrow { display: inline-block; padding: 6px 14px; border-radius: 999px; background: var(--blue-soft); border: 1.5px solid var(--blue-line); color: var(--navy); font-size: 15.5px; font-weight: 700; letter-spacing: .4px; text-transform: uppercase; }
.hero-panel .sub-en { font-family: var(--font-serif); font-style: italic; font-size: 20px; color: var(--gold); margin-top: 8px; }
.hero-panel p.lead { color: var(--ink-2); font-size: 17px; line-height: 1.7; max-width: 580px; margin-top: 12px; }
.glass { background: var(--blue-soft); border: 1.5px solid var(--blue-line); border-radius: 22px; color: var(--ink); }
.glass-lite { background: #fff; border: 1.5px solid var(--line); border-radius: 20px; color: var(--ink); }

.ph-label { display: inline-flex; align-items: center; max-width: 100%; }
.ph-label .b { position: relative; z-index: 1; width: 48px; height: 48px; flex: none; border-radius: 50%; background: #fff; border: 3px solid var(--sky); color: var(--navy-2); display: grid; place-items: center; box-shadow: 0 4px 12px rgba(13, 71, 161, .2); }
.ph-label .b svg { width: 22px; height: 22px; }
.ph-label .t { margin-left: -16px; padding: 7px 22px 7px 26px; border-radius: 0 999px 999px 0; background: var(--grad-label); color: #fff; font-size: 18px; font-weight: 700; line-height: 1.3; min-width: 0; }
.ph-label.orange .b { border-color: var(--orange); color: #E65100; }
.ph-label.orange .t { background: var(--grad-label-orange); font-size: 20px; }
.ph-label.sm .b { width: 40px; height: 40px; border-width: 2.5px; }
.ph-label.sm .b svg { width: 18px; height: 18px; }
.ph-label.sm .t { font-size: 17px; padding: 5px 18px 5px 22px; margin-left: -14px; }
.ph-label.sm.orange .t { font-size: 20px; }

.panel { position: relative; background: var(--blue-soft); border: 1.5px solid var(--blue-line); border-radius: 20px; padding: 18px 20px; }
.panel.orange { background: var(--orange-soft); border-color: var(--orange-line); }
.panel.white { background: var(--surface); }
.panel.has-label { margin-top: 30px; padding-top: 34px; }
.panel.has-label > .ph-label { position: absolute; left: -6px; top: -25px; }
.panel.has-label > .ph-label.sm { top: -21px; }

.figure { position: relative; border-radius: 18px; overflow: hidden; background: #DCE7F3; box-shadow: var(--shadow); }
.figure img { width: 100%; height: 100%; object-fit: cover; }
.figure .cap { position: absolute; left: 50%; bottom: 12px; transform: translateX(-50%); max-width: calc(100% - 24px); padding: 6px 16px; border-radius: 10px; background: rgba(237, 245, 253, .94); border: 1.5px solid var(--blue-line); color: var(--navy); font-size: 15px; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; box-shadow: 0 4px 12px rgba(4, 22, 66, .18); }
.figure .cap.orange { background: rgba(255, 246, 234, .95); border-color: var(--orange-line); color: var(--c1-ink); }

.term { cursor: pointer; border-bottom: 2px solid var(--sky); color: var(--navy); font-weight: 600; padding-bottom: 1px; transition: background .15s; }
.term:hover, .term.open { background: var(--navy-soft); border-radius: 3px; }
.kem { font-family: var(--font-serif); font-style: italic; color: var(--gold); font-size: .93em; }
.en .term { color: var(--gold); border-bottom-color: var(--orange-line); font-weight: 600; }
.en .term:hover, .en .term.open { background: var(--orange-soft); }
.ph-pop { position: absolute; z-index: 60; width: min(340px, calc(100vw - 32px)); background: var(--surface); border: 1.5px solid var(--blue-line); border-top: 4px solid var(--navy-2); border-radius: 16px; box-shadow: 0 18px 44px rgba(31, 41, 51, .22); padding: 14px 16px; font-size: 16.5px; }
.ph-pop .head { display: flex; align-items: center; gap: 8px; }
.ph-pop .head b { color: var(--gold); font-family: var(--font-serif); font-size: 18px; }
.ph-pop .head .vi-name { color: var(--ink); font-weight: 600; }
.ph-pop .meta { font-size: 15.5px; color: var(--ink-3); margin: 2px 0 8px; }
.ph-pop .def + .def { margin-top: 6px; }
.ph-pop .def.en { font-style: normal; font-family: inherit; color: var(--ink-2); padding-left: 10px; border-left: 2px solid var(--orange-line); }
.ph-pop .speak { margin-left: auto; color: #fff; display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; background: var(--grad-label); flex: none; }
.ph-pop .links { display: flex; flex-wrap: wrap; gap: 6px 12px; margin-top: 10px; font-size: 15.5px; }
.ph-pop .links a { display: inline-flex; align-items: center; gap: 4px; min-height: 28px; font-weight: 600; }
.speak-btn { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; color: #fff; background: linear-gradient(135deg, var(--sky), var(--navy)); box-shadow: 0 6px 14px rgba(13, 71, 161, .28); transition: transform .2s; flex: none; }
.speak-btn:hover { transform: scale(1.08); color: #fff; }
.speak-btn.ghost { background: transparent; color: var(--navy-2); box-shadow: none; }
.speak-btn.ghost:hover { background: var(--blue-soft); }
.dict-links { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; font-size: 15.5px; }
.dict-links .dl-lb { flex-basis: 100%; font-size: 14px; color: var(--ink-3); }
.dict-links a { display: inline-flex; align-items: center; gap: 4px; min-height: 30px; padding: 0 11px; border-radius: 999px; background: var(--blue-soft); border: 1px solid var(--blue-line); font-weight: 700; color: var(--navy); transition: background .2s, border-color .2s; }
.dict-links a:hover { background: #DCEBFA; border-color: var(--navy-2); color: var(--navy); }
.dict-links a::after { content: "↗"; font-size: 14px; opacity: .7; }

.ph-toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%) translateY(12px); background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 999px; font-size: 16.5px; opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; z-index: 80; max-width: calc(100vw - 32px); }
.ph-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

table.tbl { width: 100%; border-collapse: collapse; font-size: 16.5px; background: var(--surface); }
table.tbl th, table.tbl td { text-align: left; padding: 9px 12px; border: 1px solid #CFE0F2; vertical-align: top; }
table.tbl th { font-size: 16px; font-weight: 700; color: var(--navy); background: #DCEBFA; }
table.tbl td:first-child { font-weight: 600; }

.skel { border-radius: 10px; background: linear-gradient(90deg, #E6EEF8 25%, #F2F6FC 50%, #E6EEF8 75%); background-size: 200% 100%; animation: skel 1.2s linear infinite; min-height: 14px; }
@keyframes skel { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

.reveal { opacity: 0; transform: translateY(16px); transition: opacity .55s ease, transform .55s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .08s; }
.reveal[data-delay="2"] { transition-delay: .16s; }
.reveal[data-delay="3"] { transition-delay: .24s; }
@keyframes ph-noi { 0% { transform: translateY(0); } 50% { transform: translateY(-9px); } 100% { transform: translateY(0); } }

@media (max-width: 1080px) {
  .wrap { padding: 0 24px; }
  .ph-mm-p { left: 24px; right: 24px; }
  .ph-mm-cols.c4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid.c5 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid.c4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
  .ph-metric { display: none; }
  .ph-mm-cols.c3 { grid-template-columns: 1fr; gap: 14px; }
  .grid.c3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-panel { padding: 30px 28px; border-radius: 24px; }
}
@media (max-width: 720px) {
  :root { --header-h: 56px; }
  .wrap { padding: 0 16px; }
  main { padding: 14px 0 96px; }
  body { padding-bottom: 0; }
  .ph-top, .ph-bar { display: none; }
  .ph-mob { display: block; background: var(--surface); border-bottom: 1px solid var(--line); }
  .ph-mob .wrap { display: flex; align-items: center; gap: 8px; height: 56px; padding: 0 14px 0 16px; }
  .ph-mob .ph-logo .word { font-size: 20px; }
  .ph-mob .ph-logo .kntt { display: none; }
  .ph-mob .spacer { flex: 1; }
  .ph-mob { border-bottom: 3px solid var(--orange) !important; }
  .ph-mob-tim { width: 44px; height: 44px; border-radius: 50%; background: var(--blue-soft); border: 1.5px solid var(--blue-line); color: var(--navy); display: grid; place-items: center; transition: background .2s; }
  .ph-mob-tim:hover, .ph-mob-tim[aria-expanded="true"] { background: #DCEBFA; }
  .ph-mob-lang { min-height: 40px; display: inline-flex; align-items: center; gap: 6px; padding: 0 12px; border-radius: 19px; background: var(--grad-label); color: #fff; font-size: 16px; font-weight: 700; white-space: nowrap; box-shadow: 0 2px 8px rgba(13, 71, 161, .3); }
  .ph-mob-search { display: none; padding: 8px 12px; background: var(--surface); border-bottom: 1px solid var(--line); }
  .ph-mob-search.open { display: block; }
  .ph-mob-search .ph-tim { max-width: none; min-width: 0; }
  .ph-mob-search .ph-tim-kq { width: auto; left: 0; right: 0; max-height: 60vh; overflow: auto; }
  .ph-mob-search .ph-kq { flex-wrap: wrap; gap: 4px 10px; }
  .ph-mob-search .ph-kq .noi { margin-left: 0; }
  .ph-strip { display: flex; align-items: center; gap: 9px; height: 32px; padding: 0 16px; background: var(--orange-soft); border-bottom: 1px solid var(--orange-line); font-size: 14px; font-weight: 700; letter-spacing: .8px; text-transform: uppercase; color: var(--gold); white-space: nowrap; }
  .ph-strip .n { font-family: var(--font-display); font-size: 16px; letter-spacing: 0; text-transform: none; font-weight: 700; color: var(--navy); }
  .ph-strip .bar { flex: 1; height: 5px; border-radius: 3px; background: #FDE3C4; overflow: hidden; }
  .ph-strip .bar i { display: block; height: 100%; background: var(--grad-cta); }
  .ph-tabs { display: flex; position: fixed; left: 0; right: 0; bottom: 0; height: 72px; padding: 0 6px; background: var(--surface); border-top: 2px solid var(--blue-line); z-index: 50; }
  .ph-tabs a { flex: 1 1 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px; color: var(--ink-3); font-size: 15px; }
  .ph-tabs a .ic { width: 44px; height: 28px; border-radius: 14px; display: grid; place-items: center; }
  .ph-tabs a.active { color: var(--navy); font-weight: 700; }
  .ph-tabs a.active .ic { background: var(--navy-soft); }
  .ph-tabs .ph-bar-sub { color: var(--gold); font-size: 13px; }
  .ph-footer { padding-bottom: 20px; }
  .ph-footer .wrap { flex-direction: column; gap: 14px; }
  .ph-footer nav { grid-template-columns: 1fr 1fr; }
  .hero-panel { padding: 22px 18px; border-radius: 22px; }
  .hero-panel::after { display: none; }
  .page-hero { grid-template-columns: minmax(0, 1fr); grid-template-rows: none; row-gap: 10px; margin-bottom: 18px; }
  .page-hero .eyebrow { grid-row: 1; justify-self: start; max-width: none; margin: 0; padding: 0; border: 0; color: var(--gold); font-size: 15px; font-weight: 700; }
  .page-hero h1 { grid-row: 2; min-height: 58px; padding: 10px 54px 10px 66px; font-size: 20px; border-radius: 14px; }
  .page-hero h1::before { left: 10px; width: 44px; height: 44px; margin-top: -22px; background-size: 22px; }
  .page-hero h1::after { width: 64px; right: -22px; border-left-width: 9px; }
  .page-hero > :nth-child(2):not(h1):not(p) { grid-column: 1; grid-row: auto; }
  .ph-label .t { font-size: 17px; }
  .ph-label.orange .t { font-size: 20px; }
  .grid.c2, .grid.c3, .grid.c4, .grid.c5 { grid-template-columns: 1fr; }
  .card { padding: 16px; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 6px; }
  .btn { min-height: 46px; }
  .pill { min-height: 44px; }
  h1 { font-size: 26px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}
@media print {
  .ph-header, .ph-footer, .ph-tabs, .ph-toast, .no-print { display: none !important; }
  body { background: #fff; font-size: 12pt; }
  main { padding: 0; }
  .card { box-shadow: none; border-color: #ccc; break-inside: avoid; }
  a { color: inherit; }
}

@media (min-width: 721px) and (max-width: 1279px) {
  .ph-bar .wrap { padding: 0 24px; }
  .ph-bar-i { padding: 0 9px; gap: 5px; }
}
@media (min-width: 721px) and (max-width: 799px) {
  .ph-bar .wrap { padding: 0 12px; }
  .ph-bar-i { padding: 0 6px; gap: 4px; font-size: 16.5px; }
}

[data-lang="vi"] .sub-en,
[data-lang="vi"] .h1-en,
[data-lang="vi"] .ten-en { display: none; }