/* =========================================================
   Web tuyển sinh Thạc sĩ – HVNH Phân viện Bắc Ninh
   Màu, font, khoảng cách lấy từ DESIGN.md (09/11/2026)
   ========================================================= */
:root{
  --navy:#18246D;
  --navy-900:#102258;
  --navy-100:#C9D0F0;
  --amber:#EFA317;
  --amber-600:#F7B731;
  --amber-050:#FFF6E3;
  --bg:#FFFFFF;
  --bg-alt:#F3F5FB;
  --ink:#141A3A;
  --ink-2:#4A5275;
  --ink-3:#6B7499;
  --line:#D5DAEA;
  --field:#8A93B8;
  --link:#2B50D9;
  --focus:#2B50D9;
  --error:#B42318;
  --error-050:#FEF1F0;
  --ok:#1F7A4D;
  --ok-050:#ECF7F1;
  --zalo:#0068FF;

  --font:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --r-sm:4px; --r-md:8px; --r-lg:16px;
  --wrap:1200px;
  --gut:16px;
  --sec:56px;
  --header-h:64px;
}
@media (min-width:768px){ :root{ --gut:32px; --sec:88px; --header-h:72px; } }

/* ============ NỀN TẢNG ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--header-h) + 12px)}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:1rem;line-height:1.6;overflow-x:hidden;padding-bottom:88px}
@media (min-width:1024px){ body{font-size:1.0625rem} }
img{max-width:100%;display:block}
a{color:var(--link);text-underline-offset:3px}
a:hover{text-decoration-thickness:2px}
h1,h2,h3,h4{margin:0;color:var(--navy);letter-spacing:-.01em}
h1{font-size:2rem;line-height:1.15;font-weight:800}
h2{font-size:1.5rem;line-height:1.22;font-weight:700}
h3{font-size:1.1875rem;line-height:1.3;font-weight:700}
@media (min-width:768px){ h1{font-size:2.75rem} h2{font-size:2rem} h3{font-size:1.3125rem} }
@media (min-width:1024px){ h1{font-size:3.25rem} h2{font-size:2.25rem} }
p{margin:0 0 1em}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.sec{padding:var(--sec) 0}
.sec--alt{background:var(--bg-alt)}
.lead{font-size:1.0625rem;color:var(--ink-2);max-width:62ch}
@media (min-width:768px){ .lead{font-size:1.1875rem} }
.muted{color:var(--ink-2)}
.small{font-size:.875rem;line-height:1.5}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}
.on-dark :focus-visible,.on-dark:focus-visible{outline-color:var(--amber)}
.skip{position:absolute;left:8px;top:-60px;background:var(--amber);color:var(--navy-900);padding:10px 16px;border-radius:var(--r-md);font-weight:700;z-index:100}
.skip:focus{top:8px}
.svg-sprite{position:absolute;width:0;height:0;overflow:hidden}

/* Vạch nhấn lấy từ logo */
.bars{display:inline-grid;gap:4px;width:28px;margin-bottom:14px}
.bars i{display:block;height:5px;border-radius:2px;background:var(--amber)}
.bars i:nth-child(2){background:var(--navy);width:70%;justify-self:end}
.on-dark .bars i:nth-child(2){background:#fff}

/* Nhãn chờ nội dung */
.pending{display:inline-flex;align-items:center;gap:6px;font-size:.8125rem;line-height:1.3;font-weight:600;color:#7A4B00;background:var(--amber-050);border:1px dashed #C98A12;border-radius:var(--r-sm);padding:3px 8px}
.pending::before{content:"";width:6px;height:6px;border-radius:50%;background:#C98A12;flex:none}
.pending-box{border:1.5px dashed #C98A12;background:var(--amber-050);border-radius:var(--r-md);padding:16px;color:#5C3A00}
.pending-box strong{color:#5C3A00}
.ref{font-size:.875rem;color:var(--ink-2);border-left:3px solid var(--line);padding:2px 0 2px 12px;margin-top:12px}

/* ============ NÚT ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:12px 22px;border-radius:var(--r-md);border:2px solid transparent;font:600 1rem/1.2 var(--font);text-decoration:none;cursor:pointer;transition:background-color .15s,border-color .15s,color .15s;white-space:nowrap}
.btn svg{width:20px;height:20px;flex:none}
.btn--act{background:var(--amber);color:var(--navy-900);box-shadow:inset 0 -3px 0 rgba(16,34,88,.18)}
.btn--act:hover{background:var(--amber-600)}
.btn--act:active{box-shadow:none;transform:translateY(1px)}
.btn--navy{background:var(--navy);color:#fff}
.btn--navy:hover{background:var(--navy-900)}
.btn--ghost{background:transparent;color:var(--navy);border-color:var(--navy)}
.btn--ghost:hover{background:var(--bg-alt)}
.btn--ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.btn--ghost-light:hover{background:rgba(255,255,255,.08);border-color:#fff}
.btn--zalo{background:var(--zalo);color:#fff}
.btn--zalo:hover{background:#0055D4}
.btn[disabled],.btn[aria-disabled="true"]{opacity:.55;cursor:not-allowed;transform:none}
.btn--block{width:100%}
.btn-row{display:flex;flex-wrap:wrap;gap:12px}
.zl-ico{width:24px;height:24px;border-radius:50%;background:#fff;color:var(--zalo);display:grid;place-items:center;font-weight:800;font-size:.625rem;flex:none}
.textlink{display:inline-block;padding:8px 0;font-weight:600;color:var(--navy);text-decoration:underline;text-decoration-color:var(--amber);text-decoration-thickness:2px;text-underline-offset:4px}
.textlink:hover{text-decoration-thickness:3px}

/* ============ ĐẦU TRANG ============ */
.hdr{position:sticky;top:0;z-index:40;background:#fff;border-bottom:1px solid var(--line)}
.hdr__in{height:var(--header-h);display:flex;align-items:center;gap:12px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--navy);min-width:0;margin-right:auto}
.brand img{height:44px;width:auto;flex:none}
@media (min-width:768px){ .brand img{height:50px} }
.brand__t{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.brand__t b{font-size:.9375rem;font-weight:800;white-space:nowrap}
.brand__t span{font-size:.75rem;color:var(--ink-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
@media (max-width:359px){ .brand__t span{display:none} .brand__t b{font-size:.875rem} .hdr a.icon-btn{display:none} }
@media (max-width:419px){ .hero__kicker > span{display:none} }
.nav{display:none}
.nav a{white-space:nowrap;color:var(--ink);text-decoration:none;font-weight:600;font-size:.9375rem;padding:10px 4px;border-bottom:3px solid transparent}
.nav a:hover{color:var(--navy);border-bottom-color:var(--line)}
.nav a[aria-current="page"]{color:var(--navy);border-bottom-color:var(--amber)}
.hdr__tel{display:none;align-items:center;gap:8px;text-decoration:none;color:var(--navy);font-weight:700;white-space:nowrap}
.hdr__tel small{display:block;font-weight:500;color:var(--ink-2);font-size:.75rem}
.hdr__tel svg{width:20px;height:20px}
.icon-btn{width:48px;height:48px;display:inline-grid;place-items:center;border-radius:var(--r-md);border:1.5px solid var(--line);background:#fff;color:var(--navy);cursor:pointer;flex:none;text-decoration:none}
.icon-btn svg{width:22px;height:22px}
.icon-btn:hover{border-color:var(--navy)}
.hdr__cta{display:none}
@media (min-width:1200px){
  .nav{display:flex;gap:20px;align-items:center}
  .hdr__tel{display:flex}
  .hdr .icon-btn{display:none}
  .hdr .btn{min-height:44px;padding:10px 18px}
  .hdr__cta{display:inline-flex}
}

/* Menu điện thoại */
.drawer{position:fixed;inset:var(--header-h) 0 0 0;background:#fff;z-index:39;padding:8px var(--gut) 32px;overflow:auto;display:none}
.drawer.open{display:block}
.drawer a.dl-nav{display:flex;align-items:center;justify-content:space-between;min-height:56px;border-bottom:1px solid var(--line);color:var(--ink);text-decoration:none;font-weight:600;font-size:1.0625rem}
.drawer a.dl-nav svg{width:20px;height:20px}
.drawer a.dl-nav[aria-current="page"]{color:var(--navy);box-shadow:inset 4px 0 0 var(--amber);padding-left:12px}
.drawer .btn{margin-top:20px}
.drawer__tel{margin-top:20px;padding:16px;background:var(--bg-alt);border-radius:var(--r-md)}
.drawer__tel a{display:block;font-weight:700;font-size:1.125rem;color:var(--navy);text-decoration:none;padding:6px 0}

/* ============ PHẦN MỞ ĐẦU ============ */
.hero{background:var(--navy);color:#fff;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;pointer-events:none;background:repeating-linear-gradient(180deg,transparent 0 47px,rgba(255,255,255,.045) 47px 48px)}
.hero__in{position:relative;z-index:1;display:grid;gap:36px;padding-top:40px;padding-bottom:48px}
@media (min-width:960px){ .hero__in{grid-template-columns:1.05fr .95fr;gap:56px;padding-top:72px;padding-bottom:80px;align-items:center} }
.hero__kicker{display:inline-flex;align-items:center;gap:10px;font-weight:600;font-size:.9375rem;color:var(--navy-100);margin-bottom:14px}
.hero__kicker b{background:var(--amber);color:var(--navy-900);padding:3px 10px;border-radius:var(--r-sm);font-weight:700}
.hero h1{color:#fff;max-width:16ch}
.hero h1 span{display:block;color:var(--navy-100);font-weight:600;font-size:.5em;line-height:1.3;margin-top:14px;letter-spacing:0}
.hero p.lead{color:#E4E8F8;margin:18px 0 26px}
.hero__tel{margin-top:22px;font-size:.9375rem;color:var(--navy-100)}
.hero__tel a{color:#fff;font-weight:700;text-decoration:none;border-bottom:2px solid var(--amber)}

/* Phiếu tra nhanh */
.sheet{background:#fff;color:var(--ink);border-radius:var(--r-lg);box-shadow:0 24px 48px -24px rgba(5,10,40,.6);overflow:hidden}
.sheet__hd{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 20px;border-bottom:1px solid var(--line)}
.sheet__hd h2{font-size:1.0625rem;font-weight:700}
.sheet__hd span{font-size:.8125rem;color:var(--ink-3);white-space:nowrap}
.sheet ol{list-style:none;margin:0;padding:0}
.qrow{display:grid;grid-template-columns:8px 1fr auto;gap:0 14px;align-items:center;padding:14px 20px 14px 0;border-bottom:1px solid var(--line);text-decoration:none;color:inherit;transition:background-color .15s}
.sheet li:last-child .qrow{border-bottom:0}
.qrow:hover{background:var(--bg-alt)}
.qrow::before{content:"";align-self:stretch;background:var(--amber);border-radius:0 3px 3px 0;margin:4px 0;opacity:0;transition:opacity .15s}
.qrow:hover::before,.qrow:focus-visible::before{opacity:1}
.qrow__q{font-size:.8125rem;font-weight:600;color:var(--ink-3);display:block;margin-bottom:2px}
.qrow__a{font-weight:700;color:var(--navy);display:block;line-height:1.35}
.qrow__a em{font-style:normal;font-weight:500;color:var(--ink-2)}
.qrow svg{width:20px;height:20px;color:var(--navy)}
@media (prefers-reduced-motion:no-preference){
  .sheet .qrow{animation:rowIn .5s cubic-bezier(.2,.7,.2,1) both}
  .sheet li:nth-child(2) .qrow{animation-delay:.07s}
  .sheet li:nth-child(3) .qrow{animation-delay:.14s}
  .sheet li:nth-child(4) .qrow{animation-delay:.21s}
  .sheet li:nth-child(5) .qrow{animation-delay:.28s}
  @keyframes rowIn{from{opacity:0;transform:translateX(16px)}to{opacity:1;transform:none}}
}

/* ============ VÌ SAO ============ */
.why{display:grid;gap:28px 32px;margin-top:32px}
@media (min-width:600px){ .why{grid-template-columns:1fr 1fr} }
@media (min-width:1024px){ .why{grid-template-columns:repeat(4,1fr)} }
.why h3{font-size:1.0625rem;margin-bottom:6px}
.why p{color:var(--ink-2);margin:0;font-size:.9688rem}
.why__n{font-size:2.25rem;font-weight:800;color:var(--navy);line-height:1;margin-bottom:8px;display:block}
.why__ico{width:40px;height:40px;color:var(--navy);margin-bottom:12px}

/* ============ NGÀNH – danh sách dòng ============ */
.split{display:grid;gap:28px}
@media (min-width:960px){ .split{grid-template-columns:minmax(260px,.75fr) 1.6fr;gap:56px;align-items:start} .split__side{position:sticky;top:calc(var(--header-h) + 32px)} }
.mlist{list-style:none;margin:0;padding:0;border-top:2px solid var(--navy)}
.mrow{display:grid;gap:10px;padding:20px 0;border-bottom:1px solid var(--line)}
@media (min-width:720px){ .mrow{grid-template-columns:1fr auto;align-items:center;gap:8px 24px} }
.h3-like{font-size:1.1875rem;line-height:1.3;font-weight:700}
@media (min-width:768px){ .h3-like{font-size:1.3125rem} }
.side-card .h3-like{font-size:1.0625rem;margin-bottom:6px}
.side-card--navy .h3-like{color:#fff}
.mrow h3 a,.mrow .h3-like a{color:inherit;text-decoration:none;display:inline-block;padding:2px 0}
.mrow h3 a:hover,.mrow .h3-like a:hover{text-decoration:underline;text-decoration-color:var(--amber);text-decoration-thickness:2px}
.mrow p{margin:4px 0 0;color:var(--ink-2);font-size:.9375rem}
.mrow__act{display:flex;gap:10px;flex-wrap:wrap}
.mrow__act .btn{min-height:44px;padding:10px 16px;font-size:.9375rem}

/* ============ CÁC BƯỚC ============ */
.steps{list-style:none;margin:32px 0 0;padding:0;display:grid;gap:0;counter-reset:s}
@media (min-width:900px){ .steps{grid-template-columns:repeat(4,1fr);gap:24px} }
.step{position:relative;padding:0 0 28px 64px;counter-increment:s}
.step::before{content:counter(s);position:absolute;left:0;top:0;width:44px;height:44px;border-radius:50%;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:800;font-size:1.125rem}
.step::after{content:"";position:absolute;left:21px;top:48px;bottom:4px;width:2px;background:var(--line)}
.step:last-child::after{display:none}
.step:last-child::before{background:var(--amber);color:var(--navy-900)}
@media (min-width:900px){
  .step{padding:64px 0 0}
  .step::after{left:52px;right:-20px;top:21px;bottom:auto;width:auto;height:2px}
}
.step h3{font-size:1.0625rem;margin-bottom:6px}
.step p{margin:0;color:var(--ink-2);font-size:.9375rem}
/* bản dọc gọn trong cột phụ */
.steps--v{grid-template-columns:1fr!important;gap:0!important;margin-top:16px}
.steps--v .step{padding:0 0 20px 60px}
.steps--v .step::after{left:21px;right:auto;top:48px;bottom:4px;width:2px;height:auto}

/* ============ HỎI ĐÁP ============ */
.faq{border-top:2px solid var(--navy)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:56px;padding:14px 0;font-weight:700;color:var(--navy);font-size:1.0313rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary .pm{width:28px;height:28px;border-radius:50%;border:1.5px solid var(--navy);flex:none;position:relative}
.faq summary .pm::before,.faq summary .pm::after{content:"";position:absolute;left:50%;top:50%;width:12px;height:2px;background:var(--navy);transform:translate(-50%,-50%)}
.faq summary .pm::after{transform:translate(-50%,-50%) rotate(90deg);transition:transform .2s}
.faq details[open] summary .pm{background:var(--navy)}
.faq details[open] summary .pm::before{background:#fff}
.faq details[open] summary .pm::after{transform:translate(-50%,-50%) rotate(0);background:#fff}
.faq .ans{padding:0 0 18px;color:var(--ink-2);max-width:68ch}
.faq .ans p:last-child{margin:0}

/* ============ KHỐI FORM CUỐI TRANG CHỦ ============ */
.cta-band{background:var(--navy);color:#fff}
.cta-band__in{display:grid;gap:28px;padding-top:var(--sec);padding-bottom:var(--sec)}
@media (min-width:960px){ .cta-band__in{grid-template-columns:1fr 1.1fr;gap:56px;align-items:center} }
.cta-band h2{color:#fff}
.cta-band p{color:#E4E8F8}
.cta-band .card p{color:var(--ink-3)}
.cta-band ul{list-style:none;padding:0;margin:20px 0 0;display:grid;gap:10px}
.cta-band li{display:flex;gap:10px;align-items:flex-start;color:#E4E8F8}
.cta-band li svg{width:22px;height:22px;color:var(--amber);flex:none;margin-top:2px}
.cta-band li a{color:#fff;font-weight:700}

/* ============ FORM ============ */
.card{background:#fff;color:var(--ink);border:1px solid var(--line);border-radius:var(--r-lg);padding:20px}
@media (min-width:768px){ .card{padding:32px} }
.form{display:grid;gap:18px}
.form__grid{display:grid;gap:18px}
@media (min-width:640px){ .form__grid{grid-template-columns:1fr 1fr} .form__grid .full{grid-column:1/-1} }
.fld label,.fld legend{display:block;font-weight:600;font-size:.9375rem;margin-bottom:6px;color:var(--ink)}
.fld .req{color:var(--error);font-weight:700}
.fld .opt{color:var(--ink-3);font-weight:500;font-size:.8125rem}
.fld .hint{font-size:.8125rem;color:var(--ink-3);margin:6px 0 0}
.inp{width:100%;min-height:48px;padding:11px 14px;border:1.5px solid var(--field);border-radius:var(--r-sm);background:#fff;color:var(--ink);font:400 16px/1.4 var(--font)}
.inp::placeholder{color:#7A82A6}
.inp:hover{border-color:var(--ink-2)}
.inp:focus{outline:none;border-color:var(--navy);box-shadow:0 0 0 3px rgba(43,80,217,.35)}
select.inp{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' fill='none' stroke='%2318246D' stroke-width='2'%3E%3Cpath d='m5 8 5 5 5-5'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:40px}
.fld.is-err .inp{border-color:var(--error);border-width:2px;background:var(--error-050)}
.err{display:none;align-items:flex-start;gap:6px;color:var(--error);font-size:.875rem;font-weight:600;margin:6px 0 0}
.err svg{width:18px;height:18px;flex:none;margin-top:1px}
.fld.is-err .err{display:flex}
.fld label.chk,.chk{display:flex;font-weight:500;gap:12px;align-items:flex-start;cursor:pointer;font-size:.9375rem;color:var(--ink)}
.chk input{width:24px;height:24px;margin:1px 0 0;accent-color:var(--navy);flex:none}
.chk a{font-weight:600}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.ts-box:empty{display:none}
.alert{display:none;gap:12px;padding:14px 16px;border-radius:var(--r-md);border:1.5px solid}
.alert.show{display:flex}
.alert svg{width:22px;height:22px;flex:none}
.alert--err{background:var(--error-050);border-color:var(--error);color:#7A1A12}
.alert--err strong{color:var(--error)}
.alert a{color:inherit;font-weight:700}
.spin{width:18px;height:18px;border:2.5px solid rgba(16,34,88,.3);border-top-color:var(--navy-900);border-radius:50%;animation:sp .8s linear infinite;display:none}
.is-loading .spin{display:inline-block}
@keyframes sp{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){ .spin{animation-duration:2.4s} }
.form__foot{display:grid;gap:12px}
.form__foot p{margin:0}

/* ============ ĐẦU TRANG CON ============ */
.phead{background:var(--bg-alt);border-bottom:1px solid var(--line);padding:28px 0 32px}
@media (min-width:768px){ .phead{padding:44px 0 48px} }
.crumb{font-size:.875rem;color:var(--ink-2);margin-bottom:10px;display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.crumb a{color:var(--ink-2);display:inline-block;padding:4px 0}
.phead h1{font-size:1.875rem}
@media (min-width:768px){ .phead h1{font-size:2.5rem} }
.phead .lead{margin-top:12px;margin-bottom:0}

.toc{display:flex;gap:8px;overflow-x:auto;padding:4px 0 2px;margin-top:20px;scrollbar-width:thin}
.toc a{flex:none;display:inline-flex;align-items:center;min-height:40px;padding:8px 14px;border-radius:999px;border:1.5px solid var(--line);background:#fff;color:var(--navy);font-weight:600;font-size:.875rem;text-decoration:none}
.toc a:hover{border-color:var(--navy)}
.layout{display:grid;gap:40px}
.layout>*{min-width:0}
@media (min-width:1024px){ .layout{grid-template-columns:1fr 320px;gap:56px;align-items:start} .aside{position:sticky;top:calc(var(--header-h) + 24px)} }
.block{padding:8px 0 40px;border-bottom:1px solid var(--line);margin-bottom:40px}
.block:last-child{border-bottom:0;margin-bottom:0}
.block h2{font-size:1.5rem;margin-bottom:16px}
@media (min-width:768px){ .block h2{font-size:1.75rem} }
.checklist{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.checklist li{display:flex;gap:12px;align-items:flex-start}
.checklist svg{width:22px;height:22px;color:var(--ok);flex:none;margin-top:2px}

/* Bảng mốc thời gian */
.tl{width:100%;border-collapse:collapse;font-size:.9688rem}
.tl th,.tl td{text-align:left;padding:14px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.tl thead th{background:var(--navy);color:#fff;font-weight:600;font-size:.875rem}
.tl thead th:first-child{border-radius:var(--r-md) 0 0 0}
.tl thead th:last-child{border-radius:0 var(--r-md) 0 0}
.tl td:first-child{font-weight:700;color:var(--navy)}
@media (max-width:599px){
  .tl thead{display:none}
  .tl tr{display:block;border:1px solid var(--line);border-radius:var(--r-md);margin-bottom:12px;padding:6px 14px}
  .tl td{display:block;border:0;padding:6px 0}
  .tl td[data-k]::before{content:attr(data-k);display:block;font-size:.75rem;font-weight:600;color:var(--ink-3)}
}

/* Thẻ bên cạnh */
.side-card{border:1px solid var(--line);border-radius:var(--r-lg);padding:20px;background:#fff}
.side-card h3{font-size:1.0625rem;margin-bottom:6px}
.side-card .btn{width:100%;margin-top:12px}
.side-card + .side-card{margin-top:16px}
.side-card--navy{background:var(--navy);border-color:var(--navy);color:#fff}
.side-card--navy h3{color:#fff}
.side-card--navy p{color:#E4E8F8}

/* Nút tải tài liệu */
.dl{display:flex;align-items:center;gap:14px;padding:14px 16px;border:1.5px solid var(--navy);border-radius:var(--r-md);text-decoration:none;color:var(--navy);background:#fff;min-height:64px}
.dl:hover{background:var(--bg-alt)}
.dl svg{width:28px;height:28px;flex:none}
.dl b{display:block;font-size:.9688rem}
.dl small{display:block;color:var(--ink-2);font-size:.8125rem;font-weight:500}
.dl[aria-disabled="true"]{border-style:dashed;border-color:#C98A12;background:var(--amber-050);color:#5C3A00;cursor:not-allowed}
.dl[aria-disabled="true"] small{color:#7A4B00}

/* Liên hệ */
.contact{display:grid;gap:16px}
@media (min-width:640px){ .contact{grid-template-columns:1fr 1fr} }
.contact>*{min-width:0}
.ccard{display:flex;gap:14px;align-items:flex-start;padding:18px;border:1px solid var(--line);border-radius:var(--r-lg);background:#fff}
.ccard>div{min-width:0}
.ccard__ico{width:44px;height:44px;border-radius:var(--r-md);background:var(--bg-alt);display:grid;place-items:center;color:var(--navy);flex:none}
.ccard__ico--zalo{background:#E6F0FF;color:var(--zalo)}
.ccard__ico svg{width:22px;height:22px}
.ccard h3,.ccard .ccard-h{font-size:.875rem;line-height:1.4;font-weight:600;color:var(--ink-2);margin-bottom:2px}
.ccard .v{font-size:1.125rem;font-weight:700;color:var(--navy);text-decoration:none;display:inline-block;padding:4px 0;overflow-wrap:anywhere}
.ccard .v--sm{font-size:1rem}
.ccard .v:hover{text-decoration:underline}
.ccard p{margin:2px 0 0;font-size:.875rem;color:var(--ink-2)}
.ccard .addr{font-size:1rem;color:var(--ink);font-weight:600}
.map{border-radius:var(--r-lg);border:1px solid var(--line);overflow:hidden;background:var(--bg-alt)}
.map iframe{display:block;width:100%;height:360px;border:0}
.map__foot{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;padding:14px 16px;border-top:1px solid var(--line);background:#fff}
.map__foot p{margin:0}

/* Trang trạng thái */
.state{max-width:640px;margin:0 auto;text-align:center;padding:56px 0 72px}
.state__ico{width:72px;height:72px;border-radius:50%;display:grid;place-items:center;margin:0 auto 20px}
.state__ico svg{width:36px;height:36px}
.state__ico--ok{background:var(--ok-050);color:var(--ok)}
.state__ico--neutral{background:var(--bg-alt);color:var(--navy)}
.state h1{font-size:1.75rem;margin-bottom:12px}
@media (min-width:768px){ .state h1{font-size:2.25rem} }
.state .lead{margin:0 auto}
.state .btn-row{justify-content:center;margin-top:24px}
.state .big404{font-size:5rem;font-weight:800;color:var(--navy);line-height:1;margin-bottom:8px}
.nextlist{text-align:left;margin:28px auto 0;border:1px solid var(--line);border-radius:var(--r-lg);padding:20px 22px;background:#fff}
.nextlist b{color:var(--navy)}
.nextlist ol{margin:8px 0 0;padding-left:20px;display:grid;gap:8px;color:var(--ink-2)}
.demo-note{margin:20px auto 0;text-align:left}

/* Bài viết */
.prose{max-width:70ch}
.prose h2{font-size:1.375rem;margin:36px 0 12px}
.prose h2:first-child{margin-top:0}
.prose ul{padding-left:22px}
.prose li{margin-bottom:6px}

/* Tin tức */
.news{display:grid;gap:16px}
.ncard{display:block;padding:20px;border:1px solid var(--line);border-radius:var(--r-lg);text-decoration:none;color:inherit;background:#fff}
.ncard time{font-size:.8125rem;color:var(--ink-3);font-weight:600}
.ncard h3{margin:6px 0 8px}
.ncard p{color:var(--ink-2);margin:0;font-size:.9375rem}

/* ============ CHÂN TRANG ============ */
.ftr{background:var(--navy-900);color:#C9D0F0;padding:48px 0 24px;font-size:.9375rem}
.ftr a{color:#fff}
.ftr__grid{display:grid;gap:32px}
@media (min-width:860px){ .ftr__grid{grid-template-columns:1.4fr 1fr 1fr} }
.ftr__brand{display:flex;gap:14px;align-items:flex-start}
.ftr__brand img{height:64px;width:auto;flex:none}
.ftr__brand b{display:block;color:#fff;font-size:1rem;margin-bottom:4px;line-height:1.35}
.ftr h2{color:#fff;font-size:.9375rem;margin-bottom:12px}
.ftr ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.ftr ul a{text-decoration:none;display:inline-block;padding:6px 0}
.ftr ul a:hover{text-decoration:underline}
.ftr__bot{border-top:1px solid rgba(201,208,240,.25);margin-top:32px;padding-top:18px;display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;font-size:.8125rem}
.ftr__bot a{display:inline-block;padding:4px 0}

/* ============ NÚT NỔI ZALO / GỌI ============ */
.fab{position:fixed;right:16px;bottom:16px;z-index:45;display:flex;flex-direction:column;gap:10px;align-items:flex-end;transition:opacity .2s, transform .2s}
.fab.hide{opacity:0;transform:translateY(12px);pointer-events:none}
.fab a{display:flex;align-items:center;gap:8px;height:56px;min-width:56px;padding:0 18px 0 16px;border-radius:28px;text-decoration:none;font-weight:700;font-size:.9375rem;box-shadow:0 8px 20px -6px rgba(5,10,40,.45)}
.fab a svg{width:24px;height:24px;flex:none}
.fab__zalo{background:var(--zalo);color:#fff}
.fab__zalo:hover{background:#0055D4}
.fab__call{background:var(--amber);color:var(--navy-900)}
.fab__call:hover{background:var(--amber-600)}
.fab .zl{width:28px;height:28px;border-radius:50%;background:#fff;color:var(--zalo);display:grid;place-items:center;font-weight:800;font-size:.6875rem;letter-spacing:-.02em}
@media (max-width:420px){ .fab a{padding:0;width:56px;justify-content:center} .fab a .lbl{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)} }

.mt0{margin-top:0}.mt8{margin-top:8px}.mt16{margin-top:16px}.mt24{margin-top:24px}.mt32{margin-top:32px}