:root{--navy:#0B1F3A;--navy2:#13305a;--org:#FF7A00;--org2:#e56b00;--yel:#FFC400;--bg:#F6F7F9;--card:#fff;--tx:#18222f;--mut:#5b6877;--line:#e3e7ec;--ok:#12a150;--r:16px;--sh:0 6px 24px rgba(11,31,58,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--tx);background:var(--bg);line-height:1.6;font-size:16px;-webkit-text-size-adjust:100%}
img,svg{max-width:100%}a{color:var(--navy2)}
.wrap{max-width:1160px;margin:0 auto;padding:0 16px}
/* header */
.hdr{position:sticky;top:0;z-index:50;background:var(--navy);color:#fff;box-shadow:0 2px 12px rgba(0,0,0,.2)}
.hdr .wrap{display:flex;align-items:center;gap:14px;height:62px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:#fff;flex-shrink:0}
.logo svg{width:40px;height:40px}.logo b{font-size:22px;letter-spacing:.5px;font-weight:800;line-height:1}
.logo b i{font-style:normal;color:var(--org)}.logo small{display:block;font-size:10.5px;font-weight:500;color:#b9c6d8;letter-spacing:.3px;margin-top:3px}
.nav{margin-left:auto;display:flex;gap:4px;align-items:center}
.nav a{color:#dce6f3;text-decoration:none;padding:8px 11px;border-radius:9px;font-size:14.5px;font-weight:500}
.nav a:hover{background:rgba(255,255,255,.1);color:#fff}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;cursor:pointer;font:inherit;font-weight:700;text-decoration:none;border-radius:12px;padding:12px 20px;transition:.15s;line-height:1.2}
.btn-org{background:var(--org);color:#fff;box-shadow:0 6px 16px rgba(255,122,0,.35)}.btn-org:hover{background:var(--org2);transform:translateY(-1px)}
.btn-line{background:#fff;color:var(--navy);border:2px solid var(--navy)}.btn-line:hover{background:var(--navy);color:#fff}
.btn-zalo{background:#0068ff;color:#fff}.btn-zalo:hover{background:#0056d6}
.btn-sm{padding:8px 14px;font-size:14px;border-radius:10px}.btn-block{display:flex;width:100%}
.burger{display:none;margin-left:auto;background:none;border:0;color:#fff;font-size:26px;cursor:pointer}
@media(max-width:860px){.burger{display:block}.nav{display:none;position:absolute;left:0;right:0;top:62px;background:var(--navy);flex-direction:column;align-items:stretch;padding:8px 16px 16px;margin:0}.nav.open{display:flex}.nav a{padding:12px}}
/* hero */
.hero{background:radial-gradient(1200px 500px at 85% -10%,#1d4a85 0%,transparent 60%),linear-gradient(160deg,var(--navy),#0a1a30);color:#fff;padding:44px 0 56px;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;right:-60px;top:20px;width:340px;height:340px;background:repeating-linear-gradient(0deg,transparent 0 38px,rgba(255,196,0,.12) 38px 44px);transform:rotate(14deg);border-left:10px solid rgba(255,196,0,.12);border-right:10px solid rgba(255,196,0,.12);opacity:.8;pointer-events:none}
.hero-g{display:grid;grid-template-columns:1.25fr 1fr;gap:34px;align-items:center;position:relative;z-index:1}
.kick{display:inline-block;background:rgba(255,196,0,.15);color:var(--yel);border:1px solid rgba(255,196,0,.4);padding:5px 12px;border-radius:99px;font-size:13px;font-weight:600;margin-bottom:14px}
.hero h1{font-size:clamp(28px,4.6vw,46px);line-height:1.15;margin:0 0 14px;font-weight:800}
.hero h1 em{font-style:normal;color:var(--org)}
.hero p.lead{font-size:clamp(16px,2vw,19px);color:#d3deec;margin:0 0 22px;max-width:560px}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap}
.trust{display:flex;gap:18px;flex-wrap:wrap;margin-top:24px;color:#c7d5e8;font-size:13.5px}.trust span:before{content:"✓ ";color:var(--yel);font-weight:800}
.qbox{background:#fff;color:var(--tx);border-radius:20px;padding:22px;box-shadow:0 20px 60px rgba(0,0,0,.35)}
.qbox h2{margin:0 0 4px;font-size:20px;color:var(--navy)}.qbox p.sub{margin:0 0 14px;color:var(--mut);font-size:14px}
@media(max-width:860px){.hero-g{grid-template-columns:1fr}.hero:after{display:none}}
/* sections */
section{padding:46px 0}.sec-h{text-align:center;max-width:720px;margin:0 auto 28px}
.sec-h h2{font-size:clamp(24px,3.4vw,34px);margin:0 0 8px;color:var(--navy);font-weight:800;line-height:1.2}.sec-h p{margin:0;color:var(--mut)}
.alt{background:#fff}
/* cards */
.grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px;box-shadow:var(--sh);display:flex;flex-direction:column;transition:.2s}
.card:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(11,31,58,.14)}
.card h3{margin:0 0 6px;font-size:18px;color:var(--navy)}.card h3 a{text-decoration:none;color:inherit}
.card .tg{color:var(--mut);font-size:14px;margin:0 0 12px;flex:1}
.ico{width:54px;height:54px;border-radius:14px;background:linear-gradient(135deg,var(--navy),var(--navy2));display:grid;place-items:center;margin-bottom:12px}
.ico svg{width:30px;height:30px}
.meta{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 12px}.chip{background:#eef2f7;color:#2c3b4f;border-radius:99px;padding:3px 10px;font-size:12.5px;font-weight:600}
.chip.o{background:#fff1e2;color:#b14f00}
.price{font-weight:800;color:var(--org2)}
.card .act{display:flex;gap:8px}.card .act .btn{flex:1}
.stars{color:var(--yel);letter-spacing:2px;font-size:15px}
/* quiz */
.q-step{display:none}.q-step.on{display:block}
.opts{display:grid;gap:8px}.opts button{text-align:left;background:#f2f5f9;border:2px solid transparent;border-radius:12px;padding:12px 14px;font:inherit;cursor:pointer;font-weight:600;color:var(--navy)}
.opts button:hover{border-color:var(--org);background:#fff7ee}
.q-bar{height:6px;background:#e8edf3;border-radius:9px;margin:0 0 14px;overflow:hidden}.q-bar i{display:block;height:100%;background:var(--org);width:0;transition:.3s}
.q-in{width:100%;font:inherit;padding:12px 14px;border:2px solid var(--line);border-radius:12px;margin-bottom:10px}
.res{border:2px solid var(--line);border-radius:14px;padding:12px;margin-bottom:10px}.res.top{border-color:var(--org);background:#fff9f2}
.res h4{margin:0 0 4px;color:var(--navy)}.res .badge{background:var(--org);color:#fff;font-size:11.5px;border-radius:99px;padding:2px 9px;margin-left:6px;font-weight:700}
/* table */
.tw{overflow-x:auto;border-radius:var(--r);border:1px solid var(--line);background:#fff;box-shadow:var(--sh)}
table.cmp{border-collapse:collapse;width:100%;min-width:760px;font-size:14.5px}
.cmp th,.cmp td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.cmp thead th{background:var(--navy);color:#fff;font-weight:600;position:sticky;top:0}
.cmp tbody tr:nth-child(even){background:#fafbfc}.cmp td:first-child{font-weight:700;color:var(--navy);white-space:nowrap}
.bar{display:inline-block;width:70px;height:7px;background:#e6ebf1;border-radius:9px;vertical-align:middle;overflow:hidden}.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--yel),var(--org))}
/* page body */
.crumb{font-size:13.5px;color:var(--mut);padding:14px 0 0}.crumb a{color:var(--mut)}
.ph{background:linear-gradient(160deg,var(--navy),#0a1a30);color:#fff;padding:30px 0 36px}
.ph h1{margin:6px 0 8px;font-size:clamp(26px,4vw,40px);line-height:1.18;font-weight:800}.ph p{margin:0;color:#cdd9ea;max-width:760px;font-size:17px}
.ph .crumb,.ph .crumb a{color:#9fb3cf}
.two{display:grid;grid-template-columns:1fr 340px;gap:26px;align-items:start}
@media(max-width:940px){.two{grid-template-columns:1fr}}
.prose{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:var(--sh)}
.prose h2{color:var(--navy);margin:26px 0 10px;font-size:23px;line-height:1.25}.prose h2:first-child{margin-top:0}
.prose h3{margin:18px 0 6px;color:var(--navy)}.prose p{margin:0 0 12px}.prose ul{padding-left:20px;margin:0 0 12px}.prose li{margin-bottom:5px}
.side{position:sticky;top:76px;display:grid;gap:16px}
.box{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px;box-shadow:var(--sh)}.box h3{margin:0 0 10px;color:var(--navy);font-size:17px}
.spec{width:100%;font-size:14.5px;border-collapse:collapse}.spec td{padding:8px 0;border-bottom:1px dashed var(--line);vertical-align:top}.spec td:first-child{color:var(--mut);width:42%}.spec td:last-child{font-weight:600}
.score{display:grid;grid-template-columns:1fr 100px;gap:8px 10px;align-items:center;font-size:14.5px}.score .bar{width:100%;height:9px}
.pc{display:grid;grid-template-columns:1fr 1fr;gap:14px}@media(max-width:620px){.pc{grid-template-columns:1fr}}
.pc>div{border-radius:14px;padding:14px 16px}.pc .p{background:#ecfaf2;border:1px solid #bfe9d0}.pc .c{background:#fff2f0;border:1px solid #f4cdc7}
.pc h3{margin:0 0 6px;font-size:16px}.pc ul{margin:0;padding-left:18px}.pc li{margin-bottom:4px}
.kw{display:flex;flex-wrap:wrap;gap:8px}.kw a{background:#fff;border:1px solid var(--line);border-radius:99px;padding:7px 13px;font-size:14px;text-decoration:none;color:var(--navy);font-weight:600}.kw a:hover{border-color:var(--org);color:var(--org2);background:#fff7ee}
details{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:10px;padding:2px 16px}details summary{cursor:pointer;font-weight:700;padding:14px 0;color:var(--navy);list-style:none}details summary::-webkit-details-marker{display:none}details summary:after{content:"+";float:right;font-size:20px;color:var(--org)}details[open] summary:after{content:"−"}details p{margin:0 0 14px;color:#33414f}
.note{background:#fff8e6;border:1px solid #ffe3a0;border-radius:12px;padding:12px 16px;font-size:14.5px;color:#6b4e00}
.steps{counter-reset:s;display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}.steps>div{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px 18px 18px 64px;position:relative;box-shadow:var(--sh)}.steps>div:before{counter-increment:s;content:counter(s);position:absolute;left:16px;top:16px;width:34px;height:34px;border-radius:50%;background:var(--org);color:#fff;font-weight:800;display:grid;place-items:center}.steps h3{margin:0 0 4px;font-size:16.5px;color:var(--navy)}.steps p{margin:0;font-size:14.5px;color:var(--mut)}
.calc{display:grid;gap:10px}.calc label{font-weight:600;font-size:14px;color:var(--navy)}.calc select,.calc input{width:100%;font:inherit;padding:11px 13px;border:2px solid var(--line);border-radius:12px;background:#fff}
.calc .out{background:#fff7ee;border:2px dashed var(--org);border-radius:12px;padding:12px 14px;font-weight:700;color:var(--navy)}
/* cta band */
.band{background:linear-gradient(135deg,var(--org),#ff9a2f);color:#fff;border-radius:22px;padding:30px;display:flex;gap:20px;flex-wrap:wrap;align-items:center;justify-content:space-between}
.band h2{margin:0 0 4px;font-size:clamp(22px,3vw,30px)}.band p{margin:0;opacity:.95}.band .btn{background:#fff;color:var(--org2)}
/* footer */
.ftr{background:var(--navy);color:#b8c6da;padding:38px 0 90px;font-size:14.5px}.ftr h4{color:#fff;margin:0 0 10px}.ftr a{color:#d7e2f1;text-decoration:none}.ftr a:hover{color:var(--yel)}
.fg{display:grid;gap:26px;grid-template-columns:1.4fr 1fr 1fr}@media(max-width:760px){.fg{grid-template-columns:1fr}}
.fg ul{list-style:none;padding:0;margin:0;display:grid;gap:6px}
.copy{border-top:1px solid rgba(255,255,255,.12);margin-top:22px;padding-top:16px;font-size:13px}
/* sticky cta + popup */
.sticky{position:fixed;left:0;right:0;bottom:0;z-index:60;background:#fff;border-top:1px solid var(--line);padding:9px 12px;display:flex;gap:10px;box-shadow:0 -6px 20px rgba(0,0,0,.1)}
.sticky .btn{flex:1;padding:12px 10px;font-size:15px}
@media(min-width:861px){.sticky{display:none}.ftr{padding-bottom:38px}}
.pop{position:fixed;inset:0;background:rgba(7,18,35,.6);z-index:100;display:none;align-items:center;justify-content:center;padding:16px}.pop.on{display:flex}
.pop .in{background:#fff;border-radius:20px;max-width:420px;width:100%;padding:26px;position:relative;box-shadow:0 30px 80px rgba(0,0,0,.4)}
.pop h3{margin:0 0 6px;font-size:22px;color:var(--navy)}.pop p{margin:0 0 14px;color:var(--mut);font-size:15px}
.pop input[type=tel]{width:100%;font:inherit;font-size:17px;padding:14px;border:2px solid var(--line);border-radius:12px;margin-bottom:12px}.pop input:focus{outline:0;border-color:#0068ff}
.pop .x{position:absolute;right:12px;top:8px;background:none;border:0;font-size:28px;cursor:pointer;color:#8a97a8}
.pop .msg{font-size:14px;margin-top:10px;font-weight:600}.hp{position:absolute;left:-9999px}
.disc{font-size:13px;color:var(--mut)}
.toc{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 16px}
:focus-visible{outline:3px solid var(--yel);outline-offset:2px}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}