/* =====================================================================
   xgen × QuestUI — nền nâu tối, serif chạm khắc, bóng phát sáng vàng
   Hai màu chủ đạo: vàng #FFD166 (gold) và đỏ #E63946 (accent / badge)
   ===================================================================== */
:root{
  --gold:#FFD166; --gold-d:#E0B24C; --gold-dd:#B8861F;
  --red:#E63946; --red-d:#B72C37; --red-dd:#7F1D26;
  --bg:#FFFFFF; --alt:#F6F8FC; --surface:#FFFFFF; --elev:#FFF6DC; --line:#DCE3EE; --line2:#E9EEF6;
  --text:#1D3557; --muted:#5B6B82; --ink:#1D3557; --navy:#1D3557; --navy2:#2A4A75; --navy3:#14263F; --gold-t:#8F6200; --ok:#22C55E;
  --head:"Sora","Be Vietnam Pro",system-ui,sans-serif; --body:"Be Vietnam Pro",system-ui,"Segoe UI",sans-serif;
  --r:4px; --r-lg:8px;
  --sh-sm:1px 1px 3px rgba(255,209,102,.15); --sh:2px 2px 8px rgba(255,209,102,.20); --sh-md:4px 4px 16px rgba(255,209,102,.25); --sh-lg:8px 8px 32px rgba(255,209,102,.30);
  --glow:0 0 20px rgba(255,209,102,.40);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;font-family:var(--body);font-size:16px;line-height:1.65;color:var(--text);background:var(--bg)}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,h5{font-family:var(--head);font-weight:700;line-height:1.25;margin:0;letter-spacing:-.2px}
.wrap{max-width:1180px;margin:0 auto;padding:0 16px}
[hidden]{display:none!important}
::selection{background:var(--gold);color:var(--ink)}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px}

/* ---------- Topbar + header ---------- */
.topbar{background:#14263F;color:var(--muted);font-size:13px;border-bottom:1px solid var(--line2)}
.topbar-in{display:flex;justify-content:space-between;gap:12px;padding:6px 16px;flex-wrap:wrap}
.topbar a:hover{color:var(--gold-t)}
.topbar .i{margin-right:4px;color:var(--gold-t)}
.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(6px);border-bottom:1px solid var(--line);box-shadow:0 2px 14px rgba(255,209,102,.10)}
.header-in{display:flex;align-items:center;gap:18px;height:72px}
.logo img{display:block;height:46px;width:auto}
.nav{display:flex;gap:2px;margin-left:auto}
.nav a{padding:8px 10px;font-family:var(--head);font-weight:700;font-size:16px;letter-spacing:.6px;color:var(--muted);border-bottom:2px solid transparent;transition:.3s}
.nav a:hover{color:var(--gold-t)}
.nav a.active{color:var(--gold-t);border-bottom-color:var(--red)}
.burger{display:none;margin-left:auto;font-size:24px;background:none;border:1px solid var(--line);color:var(--gold-t);border-radius:var(--r);cursor:pointer;padding:2px 10px}

/* ---------- Buttons ---------- */
.btn{display:inline-block;padding:8px 22px;min-height:40px;border-radius:var(--r);border:1px solid transparent;font-family:var(--head);font-weight:700;font-size:16px;letter-spacing:.8px;cursor:pointer;text-align:center;transition:.3s;line-height:1.7}
.btn-primary{background:var(--gold);color:var(--ink);border-color:var(--gold-d);box-shadow:var(--sh-sm)}
.btn-primary:hover{background:var(--gold-d);box-shadow:var(--glow)}
.btn-outline{background:transparent;color:var(--gold-t);border-color:var(--gold)}
.btn-outline:hover{background:rgba(255,209,102,.1);box-shadow:var(--sh-sm)}
.btn-ghost,.btn-light{background:transparent;color:var(--muted);border-color:var(--line)}
.btn-ghost:hover,.btn-light:hover{background:var(--elev);color:var(--text);border-color:var(--gold)}
.btn-flag{background:transparent;color:var(--red);border-color:var(--red)}
.btn-flag.on{background:var(--red);color:var(--text)}
.btn:disabled{opacity:.35;cursor:not-allowed;box-shadow:none;border-color:var(--line)}
.block{display:block;width:100%}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);background:
  radial-gradient(620px 380px at 20% 35%,rgba(255,209,102,.13),transparent 70%),
  radial-gradient(520px 360px at 88% 75%,rgba(230,57,70,.16),transparent 70%),
  repeating-linear-gradient(45deg,rgba(255,209,102,.03) 0 2px,transparent 2px 22px),var(--bg)}
.hero-in{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:center;padding-top:52px;padding-bottom:128px}
.hero-logo{display:block;width:min(100%,520px);height:auto;margin-left:-8px;}
.hero h1{font-size:clamp(24px,2.8vw,34px);color:var(--gold-t);margin:22px 0 10px;line-height:1.25}
.hero p{color:var(--muted);font-size:17px;max-width:500px;margin:0}
.hero-cta{display:flex;gap:12px;margin:26px 0 0;flex-wrap:wrap}

/* thẻ giá trị so le (huy hiệu vàng + dải đỏ) */
.values{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px}
.values li{display:flex;align-items:center;width:min(100%,440px)}
.values li:nth-child(2){margin-left:36px}.values li:nth-child(3){margin-left:72px}.values li:nth-child(4){margin-left:108px}
.vl{flex:none;z-index:1;width:58px;height:58px;display:grid;place-items:center;border-radius:var(--r);background:var(--gold);color:var(--ink);font-family:var(--head);font-size:34px;font-weight:700;
  border:2px solid var(--gold-dd);box-shadow:var(--glow);margin-right:-12px;transform:rotate(-3deg)}
.values li>div{flex:1;padding:10px 20px 10px 28px;background:linear-gradient(90deg,var(--red),var(--red-d));color:var(--text);border:1px solid var(--red-dd);border-radius:0 var(--r) var(--r) 0;box-shadow:var(--sh)}
.values b{display:block;font-family:var(--head);font-size:18px;letter-spacing:.4px}
.values small{font-size:13px;opacity:.92;font-style:italic}

/* ---------- Danh mục (thẻ nổi đè banner) ---------- */
.tiles-wrap{margin-top:-86px;position:relative;z-index:2}
.tiles{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;background:var(--elev);padding:16px;border:1px solid rgba(255,209,102,.25);border-top:2px solid var(--gold);border-radius:var(--r);box-shadow:var(--sh-lg)}
.tile{border:1px solid var(--line);background:var(--surface);border-radius:var(--r);padding:18px 10px;text-align:center;display:flex;flex-direction:column;gap:10px;align-items:center;font-family:var(--head);font-weight:700;font-size:16px;line-height:1.25;transition:.3s}
.tile:hover{border-color:var(--gold);box-shadow:var(--glow);transform:translateY(-3px)}

/* ---------- Icon: nét mảnh, khung tròn viền kép vàng ---------- */
.i{display:inline-flex;vertical-align:-.15em;font-size:1.05em}
.ic{display:inline-grid;place-items:center;flex:none;width:56px;height:56px;border-radius:50%;color:var(--gold-t);font-size:28px;background:var(--bg);border:1px solid var(--gold);box-shadow:inset 0 0 0 3px var(--bg),inset 0 0 0 4px rgba(255,209,102,.4)}
.tile .ic{width:64px;height:64px;font-size:32px}
.tile:hover .ic,.card:hover>.ic{background:rgba(255,209,102,.08)}
.card>.ic{margin-bottom:12px}
.row-card .ic{width:52px;height:52px;font-size:26px;align-self:flex-start}
.ai .ic{margin-bottom:12px}

/* ---------- Sections ---------- */
.section{padding:72px 0}.alt{background:var(--alt);border-block:1px solid var(--line2)}
.title{font-size:clamp(28px,3.4vw,40px);text-align:center;color:var(--text)}
.title span{color:var(--gold-t)}
.title::after{content:"";display:block;width:150px;height:10px;margin:14px auto 0;
  background:linear-gradient(90deg,transparent,var(--gold) 30%,var(--gold) 42%,transparent 42%,transparent 58%,var(--gold) 58%,var(--gold) 70%,transparent) center/100% 1px no-repeat;position:relative}
.lead{text-align:center;color:var(--muted);max-width:720px;margin:14px auto 36px;font-size:17px}
.sub{margin:48px 0 18px;font-size:28px;color:var(--gold-t)}
.card{background:var(--surface);border:1px solid var(--line);border-top:2px solid var(--gold);border-radius:var(--r);padding:24px;box-shadow:var(--sh-sm);transition:.3s}
.card:hover{background:var(--elev);box-shadow:var(--sh-md)}
.card h3{font-size:22px;margin-bottom:8px;color:var(--gold-t)}
.card p{margin:0;color:var(--muted);font-size:15.5px}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.features .card{position:relative;padding-top:34px}
.num{position:absolute;top:8px;right:16px;font-family:var(--head);font-size:34px;font-weight:700;color:var(--red);opacity:.85}
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(5,1fr);gap:14px;counter-reset:s}
.steps li{counter-increment:s;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px}
.steps li::before{content:counter(s);display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--red);color:var(--text);font-family:var(--head);font-size:20px;font-weight:700;margin-bottom:10px;box-shadow:0 0 12px rgba(230,57,70,.45)}
.steps b{display:block;margin-bottom:4px;font-family:var(--head);font-size:19px;color:var(--gold-t)}.steps span{font-size:14.5px;color:var(--muted)}
.more{display:inline-block;margin-top:12px;font-family:var(--head);font-weight:700;color:var(--red);font-size:16px;letter-spacing:.5px}
.more:hover{color:var(--gold-t)}

/* ---------- Page banner + breadcrumb ---------- */
.page-banner{padding:40px 0 44px;border-bottom:1px solid var(--line);background:
  radial-gradient(520px 260px at 85% 30%,rgba(230,57,70,.18),transparent 70%),
  radial-gradient(520px 260px at 10% 80%,rgba(255,209,102,.10),transparent 70%),
  repeating-linear-gradient(45deg,rgba(255,209,102,.03) 0 2px,transparent 2px 22px),var(--bg);box-shadow:inset 0 -3px 0 -1px var(--red-dd)}
.page-banner h1{font-size:clamp(32px,4.4vw,48px);color:var(--gold-t);margin:8px 0 10px}
.page-banner p{margin:0;max-width:720px;color:var(--muted);font-size:18px}
.crumb{font-size:14px;color:var(--muted)}.crumb a{color:var(--gold-t)}.crumb a:hover{text-decoration:underline}

/* ---------- Form ---------- */
.field{display:block;font-weight:500;font-size:14px;margin-bottom:14px;color:var(--text)}
.field input:not([type=range]),.field select,.field textarea{display:block;width:100%;margin-top:6px;padding:8px 12px;min-height:40px;border:1px solid var(--line);border-radius:var(--r);font:inherit;font-size:15px;color:var(--text);background:var(--surface);transition:.3s}
.field select option{background:var(--surface)}
.field input:not([type=range]):hover,.field select:hover,.field textarea:hover{border-color:var(--gold)}
.field input:not([type=range]):focus,.field select:focus,.field textarea:focus,.qbox input[type=text]:focus,.qbox textarea:focus{outline:0;border:1px solid var(--gold);box-shadow:0 0 0 3px rgba(255,209,102,.25)}
.field input[type=range]{width:100%;margin-top:8px;accent-color:var(--gold)}
.form-ok{color:var(--ok);font-weight:600;margin:12px 0 0}
.info{list-style:none;padding:0;display:grid;gap:10px;margin:0}
.info li{display:flex;align-items:center;gap:10px}.info .i{color:var(--gold-t);font-size:20px}
.info a:hover{color:var(--gold-t)}

/* ---------- Thi thử ---------- */
.exam{background:var(--surface);border:1px solid var(--line);border-top:2px solid var(--gold);border-radius:var(--r-lg);box-shadow:var(--sh-md);padding:24px;max-width:1040px;margin:0 auto}
#vStart{display:grid;grid-template-columns:1.2fr 1fr;gap:28px}
.exam-meta{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.exam-meta span{background:rgba(255,209,102,.12);color:var(--gold-t);padding:2px 12px;border-radius:2px;font-family:var(--head);font-size:14px;font-weight:700;letter-spacing:1px;text-transform:uppercase}
.checks{display:grid;gap:8px;margin-bottom:18px;font-size:14.5px}
.checks input{accent-color:var(--gold);margin-right:8px;width:16px;height:16px;vertical-align:-3px}
.rules{background:var(--bg);border:1px solid var(--line2);border-radius:var(--r);padding:20px 20px 20px 38px;margin:0;color:var(--muted);font-size:15px}
.rules li{margin-bottom:8px}
.run-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;gap:12px}
.run-top b{font-family:var(--head);font-size:22px;color:var(--gold-t)}.run-top small{display:block;color:var(--muted)}
.timer{font-family:var(--head);font-variant-numeric:tabular-nums;font-size:30px;font-weight:700;color:var(--gold-t);background:var(--bg);border:1px solid var(--gold);padding:2px 18px;border-radius:var(--r);box-shadow:var(--sh-sm)}
.timer.low{color:var(--text);background:var(--red);border-color:var(--red-d);animation:pulse 1s infinite}
@keyframes pulse{50%{opacity:.65}}
.run-grid{display:grid;grid-template-columns:1fr 250px;gap:20px}
.qbox{border:1px solid var(--line);background:var(--bg);border-radius:var(--r);padding:22px;min-height:360px;display:flex;flex-direction:column}
.qtype{align-self:flex-start;font-family:var(--head);font-size:12.5px;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:var(--text);background:var(--red);padding:1px 10px;border-radius:2px;margin-bottom:10px}
.qbox h4{font-size:23px;margin-bottom:16px;color:var(--text);font-weight:700;line-height:1.35}
#qBody{flex:1}
.opt{display:flex;gap:10px;align-items:flex-start;padding:10px 14px;border:1px solid var(--line);background:var(--surface);border-radius:var(--r);margin-bottom:10px;cursor:pointer;transition:.3s}
.opt:hover{border-color:var(--gold)}
.opt.sel{border-color:var(--gold);background:rgba(255,209,102,.08);box-shadow:var(--glow)}
.opt input{margin-top:5px;accent-color:var(--gold)}
.opt.right{border-color:var(--ok);background:rgba(34,197,94,.1);box-shadow:none}.opt.wrong{border-color:var(--red);background:rgba(230,57,70,.12);box-shadow:none}
.qbox textarea,.qbox input[type=text]{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:var(--r);font:inherit;color:var(--text);background:var(--surface)}
.qnav{display:flex;justify-content:space-between;gap:8px;margin-top:18px;flex-wrap:wrap}
.side{display:flex;flex-direction:column;gap:12px}
.proctor{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#14263F;color:var(--text)}
.proctor video,.proctor-off{width:100%;height:130px;object-fit:cover;display:block;transform:scaleX(-1)}
.proctor-off{display:grid;place-items:center;font-size:13px;color:var(--muted);transform:none}
.proctor-state{padding:6px 10px;font-size:12.5px;background:var(--elev)}
.proctor-state.warn{background:var(--red)}
.viol{padding:4px 10px 8px;font-size:12.5px;background:var(--elev);color:var(--muted)}.viol b{color:var(--gold-t)}
.palette{display:grid;grid-template-columns:repeat(5,1fr);gap:6px}
.palette button{aspect-ratio:1;border:1px solid var(--line);border-radius:var(--r);background:var(--surface);color:var(--muted);font-family:var(--head);font-size:18px;font-weight:700;cursor:pointer;position:relative;transition:.3s}
.palette button:hover{border-color:var(--gold)}
.palette button.ans{background:var(--gold);color:var(--ink);border-color:var(--gold-d)}
.palette button.cur{outline:2px solid var(--text);outline-offset:1px;box-shadow:var(--glow)}
.palette button.flag::after{content:"";position:absolute;top:2px;right:2px;width:9px;height:9px;border-radius:50%;background:var(--red)}
.legend{font-size:12px;color:var(--muted);display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.legend i{width:12px;height:12px;border-radius:2px;display:inline-block;margin-left:6px}
.l-cur{outline:2px solid var(--text)}.l-ans{background:var(--gold)}.l-flag{background:var(--red);border-radius:50%!important}
.res-head{display:flex;gap:28px;align-items:center;flex-wrap:wrap;margin-bottom:24px}
.score-ring{--p:0;width:140px;height:140px;border-radius:50%;display:grid;place-content:center;text-align:center;background:conic-gradient(var(--gold) calc(var(--p)*1%),var(--elev) 0);position:relative;box-shadow:var(--glow)}
.score-ring::before{content:"";position:absolute;inset:12px;background:var(--surface);border-radius:50%}
.score-ring>*{position:relative}
.score-ring b{font-family:var(--head);font-size:44px;color:var(--gold-t);line-height:1}
.score-ring small{color:var(--muted)}
.res-head h3{font-size:28px;color:var(--gold-t)}
.res-actions{display:flex;gap:10px;margin-top:12px}
.res-head p{color:var(--muted);margin:4px 0 0}
.res-cols{display:grid;grid-template-columns:1.2fr 1fr;gap:28px}
.res-cols h4{margin-bottom:12px;font-size:20px;color:var(--gold-t)}
.tbar{margin-bottom:12px;font-size:14.5px}
.tbar div{height:12px;background:var(--bg);border:1px solid var(--line);border-radius:2px;overflow:hidden;margin-top:4px}
.tbar i{display:block;height:100%;background:linear-gradient(90deg,var(--gold-d),var(--gold));width:var(--w)}
.tbl{width:100%;border-collapse:collapse;font-size:15px}
.tbl td{padding:8px 0;border-bottom:1px solid var(--line2)}.tbl td:last-child{text-align:right;font-weight:700;color:var(--gold-t)}
.review{margin-top:24px;border-top:1px solid var(--line);padding-top:20px}
.review .rq{margin-bottom:20px}
.review .exp{font-size:14.5px;color:var(--muted);background:var(--bg);border-left:2px solid var(--red);padding:8px 12px}

/* ---------- Hạ tầng / phần mềm / AI / giá ---------- */
.split{display:grid;grid-template-columns:1.5fr 1fr;gap:24px;align-items:start}
.list-cards{display:grid;gap:14px}
.row-card{display:flex;gap:16px;background:var(--surface);border:1px solid var(--line);border-left:2px solid var(--gold);border-radius:var(--r);padding:18px;transition:.3s}
.row-card:hover{background:var(--elev);box-shadow:var(--sh-md)}
.row-card h3{font-size:22px;color:var(--gold-t);margin-bottom:4px}.row-card p{margin:0;color:var(--muted);font-size:15.5px}
.calc-out{margin:16px 0}
.calc-out div{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px solid var(--line2)}
.calc-out dt{color:var(--muted)}.calc-out dd{margin:0;font-weight:700;color:var(--gold-t)}
.calc small{color:var(--muted);font-size:12.5px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.timeline{list-style:none;display:grid;grid-template-columns:repeat(5,1fr);margin:48px 0 0;padding:0;position:relative}
.timeline::before{content:"";position:absolute;top:11px;left:10%;right:10%;height:2px;background:var(--line)}
.timeline li{text-align:center;position:relative;font-size:15px}
.timeline li::before{content:"";display:block;width:20px;height:20px;transform:rotate(45deg);background:var(--red);margin:1px auto 14px;border:2px solid var(--gold);position:relative}
.timeline b{display:block;font-family:var(--head);font-size:20px;color:var(--gold-t)}.timeline span{color:var(--muted)}
.pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch}
.plan{background:var(--surface);border:1px solid var(--line);border-top:2px solid var(--gold);border-radius:var(--r);padding:28px;position:relative;display:flex;flex-direction:column;transition:.3s}
.plan:hover{box-shadow:var(--sh-md)}
.plan.hot{border:1px solid var(--gold);border-top-width:2px;background:var(--elev);box-shadow:var(--sh-md)}
.ribbon{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--red);color:var(--text);font-family:var(--head);font-size:14px;font-weight:700;letter-spacing:1px;text-transform:uppercase;padding:0 14px;border-radius:2px;box-shadow:0 0 12px rgba(230,57,70,.5)}
.plan h3{color:var(--gold-t);font-size:24px}.price{font-family:var(--head);font-size:24px;font-weight:700;margin:10px 0}
.plan ul{padding-left:18px;color:var(--muted);flex:1;margin:0 0 20px}.plan li{margin-bottom:8px}
.contact{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.contact .title,.contact .lead{text-align:left;margin-left:0}
.cta{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.cta h2{font-size:30px;color:var(--gold-t);margin-bottom:6px}.cta p{margin:0;color:var(--muted)}
.cta .hero-cta{margin:0}

/* ---------- Tuyển dụng ---------- */
.why{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.chip{font-family:var(--head);font-weight:700;font-size:14px;letter-spacing:1px;text-transform:uppercase;padding:3px 14px;border-radius:2px;border:1px solid var(--line);background:var(--surface);color:var(--muted);cursor:pointer;transition:.3s}
.chip:hover{border-color:var(--gold);color:var(--text)}.chip.on{background:var(--gold);border-color:var(--gold);color:var(--ink)}
.jobs{display:grid;gap:12px}
.job{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:.3s}
.job[open]{border-color:var(--gold);box-shadow:var(--sh-md)}
.job summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px;padding:16px 20px}
.job summary:hover{background:var(--elev)}
.job summary::-webkit-details-marker{display:none}
.job-t b{display:block;font-family:var(--head);font-size:22px;color:var(--gold-t)}.job-t small{color:var(--muted)}
.job-g{flex:none;background:var(--red);color:var(--text);font-family:var(--head);font-weight:700;font-size:13px;letter-spacing:1px;text-transform:uppercase;padding:1px 12px;border-radius:2px}
.job-b{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding:16px 20px 20px;border-top:1px solid var(--line2)}
.job-b h4{margin-bottom:6px;font-size:19px;color:var(--text)}.job-b ul{margin:0;padding-left:18px;color:var(--muted);font-size:15.5px}.job-b li{margin-bottom:4px}
.job-b .btn{grid-column:1/-1;justify-self:start}
.apply{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-top:28px}
.apply p{margin:4px 0 0}
.note{font-size:13px;color:var(--muted);margin-top:16px;font-style:italic}

/* ---------- Footer ---------- */
.footer{background:#14263F;border-top:2px solid var(--gold);color:var(--muted);padding-top:40px}
.foot-in{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px;padding-bottom:28px}
.footer .logo img{height:44px}
.footer h5{color:var(--gold-t);margin:0 0 10px;font-size:20px}
.footer a:not(.logo){display:block;padding:2px 0;font-size:15px}.footer a:not(.logo):hover{color:var(--gold-t)}
.copy{border-top:1px solid var(--line2);text-align:center;padding:14px;font-size:13px}

/* ---------- Responsive ---------- */
@media (max-width:1100px){.nav a{font-size:15px;padding:8px 7px}}
@media (max-width:980px){
  .hero-in,#vStart,.split,.contact,.res-cols{grid-template-columns:1fr}
  .hero-in{padding-bottom:110px}
  .values li:nth-child(n){margin-left:0}
  .values li:nth-child(2){margin-left:18px}.values li:nth-child(3){margin-left:36px}.values li:nth-child(4){margin-left:54px}
  .tiles{grid-template-columns:repeat(3,1fr)}
  .features,.grid3,.pricing,.why{grid-template-columns:repeat(2,1fr)}
  .grid4{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr 1fr}
  .run-grid,.job-b{grid-template-columns:1fr}
  .nav{display:none;position:absolute;top:72px;left:0;right:0;background:var(--bg);flex-direction:column;padding:10px 16px;border-bottom:1px solid var(--line)}
  .nav a{font-size:18px;border-bottom:0;border-left:2px solid transparent}.nav a.active{border-left-color:var(--red)}
  .nav.open{display:flex}.burger{display:block}.header-in>.btn{display:none}
}
@media (max-width:600px){
  .tiles{grid-template-columns:repeat(2,1fr)}
  .features,.grid3,.pricing,.grid4,.steps,.foot-in,.why{grid-template-columns:1fr}
  .timeline{grid-template-columns:1fr;gap:14px}.timeline::before{display:none}
  .exam{padding:14px}.logo img{height:38px}
  .values li:nth-child(n){margin-left:0}.values li{width:100%}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;scroll-behavior:auto!important;transition:none!important}}

/* menu một dòng */
.nav a{white-space:nowrap}
@media (max-width:1280px) and (min-width:981px){.header-in>.btn{display:none}.nav{margin-left:auto}}

/* ================= Nền trắng: tinh chỉnh tương phản ================= */
.btn-primary{color:var(--ink)}
.values li>div,.ribbon,.job-g,.qtype,.steps li::before,.btn-flag.on,.timer.low,.proctor-state.warn{color:#fff}
.hero h1{color:var(--ink)}
.hero h1,.page-banner h1{text-shadow:none}
.page-banner h1{color:var(--ink)}
.title span{color:var(--red)}
.qbox,.rules,.review .exp{background:var(--alt)}
.card,.tile,.row-card,.plan,.job,.steps li{box-shadow:0 1px 3px rgba(29,53,87,.10)}
.card:hover,.row-card:hover,.plan:hover,.tile:hover{box-shadow:var(--sh-md)}
.tiles{background:#fff}
/* vùng tối giữ nguyên tông nâu: topbar, footer, khung camera */
.topbar{background:#1D3557;color:#DCE5F3;border-bottom:0}.topbar a{color:#DCE5F3}.topbar .i{color:var(--gold)}
.footer{background:#1D3557;color:#C9D4E5;border-top:3px solid var(--gold)}
.footer h5{color:var(--gold)}.footer a:not(.logo):hover{color:var(--gold)}
.copy{border-top-color:#2F4A72;color:#9FB0CB}
.proctor{background:#1D3557;color:#F5E6D3}
.proctor-state,.viol{background:#2A4A75;color:#F5E6D3}.viol b{color:var(--gold)}
.proctor-off{color:#9FB0CB}
::selection{color:var(--ink)}
.header-in>.btn{white-space:nowrap;flex:none}
@media (max-width:1400px) and (min-width:981px){.header-in>.btn{display:none}}

/* ================= Nhận diện mới: Sora + Be Vietnam Pro, đỏ – vàng – navy ================= */
.logo img{height:48px;width:auto}
.hero-logo{width:min(100%,480px);margin-left:0;filter:none}
.footer .logo img{height:50px}
.nav a{font-size:14px;font-weight:600;letter-spacing:0;padding:8px 9px}
.btn{font-size:14px;font-weight:600;letter-spacing:.2px;line-height:1.6}
.hero h1{font-size:clamp(24px,2.7vw,34px);line-height:1.25}
.hero p{font-size:16.5px}
.title{font-size:clamp(26px,3vw,34px)}
.title span{color:var(--red)}
.lead{font-size:16.5px}
.sub{font-size:24px}
.card h3,.row-card h3{font-size:18px}
.card p,.row-card p{font-size:15px}
.steps b,.timeline b{font-size:16px}
.num{font-size:26px}
.more{font-size:14px;letter-spacing:0}
.tile{font-size:14px;line-height:1.35}
.values b{font-size:16px;letter-spacing:0}
.vl{font-size:28px}
.page-banner h1{font-size:clamp(28px,4vw,40px)}
.page-banner p{font-size:17px}
.plan h3{font-size:20px}.price{font-size:20px}
.cta h2{font-size:24px}
.job-t b{font-size:17px}.job-b h4{font-size:16px}
.job-g,.ribbon,.chip,.qtype,.exam-meta span{font-size:11.5px;letter-spacing:.8px}
.run-top b{font-size:18px}
.qbox h4{font-size:19px;line-height:1.45}
.timer{font-size:24px}
.palette button{font-size:15px}
.score-ring b{font-size:38px}
.res-head h3{font-size:24px}.res-cols h4{font-size:17px}
.footer h5{font-size:16px}
.footer p{margin:6px 0 0;color:#C9D4E5}
.steps li::before,.palette button{font-family:var(--head)}
.steps li::before{font-size:16px}
/* vùng tối = navy của logo */
.topbar,.footer{background:var(--navy)}
.footer{border-top:3px solid var(--gold)}
.hero{background:radial-gradient(620px 380px at 18% 40%,rgba(255,209,102,.20),transparent 70%),radial-gradient(520px 360px at 90% 75%,rgba(230,57,70,.10),transparent 70%),#fff}
@media (max-width:1100px){.nav a{font-size:13px;padding:8px 6px}}

/* ---------- Đối tác, dự án, sự kiện ---------- */
.partner{text-align:center}
.pb{display:grid;place-items:center;width:64px;height:64px;margin:0 auto 12px;border-radius:50%;background:var(--navy);color:#fff;font-family:var(--head);font-weight:700;font-size:20px;border:3px solid var(--gold);box-shadow:var(--sh-sm)}
.partner h3{font-size:20px}
.tag{display:inline-block;background:var(--navy);color:#fff;font-family:var(--head);font-weight:600;font-size:11.5px;letter-spacing:.8px;text-transform:uppercase;padding:1px 12px;border-radius:2px;margin-bottom:10px}
.tag.red{background:var(--red)}
.projects{grid-template-columns:repeat(2,1fr)}
.project h3{margin-bottom:8px}
.event{display:flex;gap:28px;align-items:center;padding:28px}
.ev-date{flex:none;display:flex;flex-direction:column;align-items:center;justify-content:center;width:112px;height:128px;border-radius:var(--r);background:var(--red);color:#fff;border:2px solid var(--gold);box-shadow:var(--glow)}
.ev-date b{font-family:var(--head);font-size:44px;line-height:1}.ev-date span{font-weight:600;font-size:14px}.ev-date small{font-size:13px;opacity:.9}
.event h3{font-size:24px;margin-bottom:6px;color:var(--navy)}
.ev-theme{font-style:italic;color:var(--muted);margin:0 0 12px!important;font-size:16px!important}
.ev-meta{list-style:none;margin:0 0 18px;padding:0;display:grid;gap:6px;color:var(--text);font-size:15px}
.ev-meta .i{color:var(--red);margin-right:6px}
.ev-cta{display:flex;gap:12px;flex-wrap:wrap}
.partner-row{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-bottom:28px}
.pchip{display:inline-flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:8px 18px 8px 8px;font-family:var(--head);font-weight:600;color:var(--navy);box-shadow:var(--sh-sm)}
.pchip b{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--navy);color:#fff;font-size:13px;border:2px solid var(--gold)}
.event-strip{display:flex;align-items:center;gap:22px;background:#fff;border:1px solid var(--line);border-left:4px solid var(--red);border-radius:var(--r);padding:18px 22px;box-shadow:var(--sh-sm);transition:.3s}
.event-strip:hover{box-shadow:var(--sh-md);border-color:var(--gold);border-left-color:var(--red)}
.event-strip .ev-date{width:84px;height:92px}.event-strip .ev-date b{font-size:32px}.event-strip .ev-date span{font-size:12px}
.event-strip>div:nth-of-type(2){flex:1;min-width:0}.event-strip h3{font-size:20px;color:var(--navy);margin-bottom:2px}.event-strip p{margin:0;color:var(--muted);font-size:14.5px}
.event-strip .more{margin:0;white-space:nowrap}
@media (max-width:980px){.projects{grid-template-columns:1fr}.event{flex-direction:column;align-items:flex-start}.event-strip{flex-wrap:wrap}}
@media (max-width:600px){.event-strip .more{width:100%}}

/* ---------- Ảnh đối tác / dự án / sự kiện ---------- */
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.plogo{display:block;width:min(100%,240px);height:auto;margin:0 auto 14px}
.partner p{margin-top:0}
.card.project{padding:0;overflow:hidden}
.card.project .cover{display:block;width:100%;aspect-ratio:16/9;object-fit:cover;border-bottom:1px solid var(--line)}
.card.project .tag,.card.project h3,.card.project p{margin-left:24px;margin-right:24px}
.card.project .tag{margin-top:20px}
.card.project p{margin-bottom:24px}
.event{padding:0;overflow:hidden;align-items:stretch;gap:0}
.ev-img{flex:0 0 42%;width:42%;object-fit:cover;min-height:280px}
.event .ev-body{padding:28px;flex:1;display:flex;flex-direction:column;justify-content:center;align-items:flex-start}
.event{position:relative}
.event .ev-date{position:absolute;top:18px;left:18px;width:92px;height:104px;z-index:1}
.event .ev-date b{font-size:36px}
.pchip{padding:10px 16px}
.pchip img{display:block;height:44px;width:auto}
.ev-thumb{flex:none;width:130px;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r);border:1px solid var(--line)}
@media (max-width:980px){.event{flex-direction:column}.ev-img{flex:none;width:100%;min-height:0;aspect-ratio:16/9}}
@media (max-width:600px){.ev-thumb{display:none}}

/* logo đối tác (ảnh thật) */
.plogo{height:84px;width:auto;max-width:100%;object-fit:contain}
.plogo-sq{height:96px}
.pchip{background:#fff;padding:12px 22px;min-width:170px;justify-content:center}
.pchip img{height:48px;max-width:190px;object-fit:contain}

/* CYSEEX: logo chữ trắng đặt trên nền tối */
.plate{display:flex;align-items:center;justify-content:center;width:min(100%,240px);height:84px;margin:0 auto 14px;border-radius:var(--r);background:linear-gradient(135deg,#1b1464,#4a2bb0)}
.plate img{display:block;width:170px;height:auto}
.plate.sm{width:auto;height:48px;margin:0;padding:0 14px}.plate.sm img{width:120px}
.pchip:has(.plate){padding:12px 22px}
/* sự kiện: banner đầy đủ ở trên, nội dung bên dưới */
.event{flex-direction:column;align-items:stretch}
.event .ev-img{flex:none;width:100%;min-height:0;aspect-ratio:16/9;object-fit:cover}
.event .ev-body{padding:28px}
.gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.gallery figure{margin:0;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff;box-shadow:var(--sh-sm)}
.gallery img{display:block;width:100%;aspect-ratio:16/10;object-fit:cover}
.gallery figcaption{padding:10px 14px;font-size:14px;color:var(--muted)}
@media (max-width:600px){.gallery{grid-template-columns:1fr}}