@charset "UTF-8";
/* ==========================================================================
   AN BÌNH SECURITY — styles.css   v1.0.0
   QUY ƯỚC: mỗi vùng giao diện có ĐÚNG MỘT khối CSS ở đây.
   Template chỉ chứa HTML + class. Không style="..." trong .tpl.
   Bảng màu lấy từ logo: navy #0B2540 + gold #E8AC1F.
   Signature: thẻ khiên (clip-path vát góc), lưới blueprint, tuyến tuần tra.
   ========================================================================== */

/* ============ 1. TOKENS ============ */
:root{
  --navy-0:#081826; --navy:#0B2540; --navy-1:#0F3358; --navy-2:#134071;
  --blue:#0C5AA6; --blue-1:#2380D6;   /* xanh logo thật #0058A0 */
  --gold:#E8AC1F; --gold-1:#F2C230; --gold-pale:#FBEECB;
  --bg:#F2F5F7; --white:#FFFFFF;
  --ink:#101B26; --ink-70:#33424E; --ink-45:#5C6C79; --line:#DDE4E9;
  --f-h:"Oswald","Be Vietnam Pro",sans-serif;
  --f-b:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  --f-m:"IBM Plex Mono",ui-monospace,Menlo,monospace;
  --shadow:0 12px 32px -14px rgba(8,24,38,.28);
  --notch:14px;
  --grid:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
}

/* ============ 2. NỀN ============ */
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body.ab{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-b);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,h5{font-family:var(--f-h);font-weight:600;line-height:1.15;margin:0;color:var(--navy);text-transform:uppercase;letter-spacing:.01em}
p{margin:0}
img{max-width:100%;height:auto;display:block}
/* a:not([class]) — để mọi component tự quyết màu, tránh đè rule 1-class */
a:not([class]){color:var(--blue);text-decoration:none}
a:not([class]):hover{color:var(--navy)}
a[class]{text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px;border-radius:3px}
.ab-wrap{max-width:1200px;margin:0 auto;padding:0 20px}
.ab-ic{width:1em;height:1em;fill:none;flex:none;vertical-align:-.15em}
.ab-sprite{position:absolute;width:0;height:0;overflow:hidden}
.ab-mono{font-family:var(--f-m);font-weight:600;letter-spacing:.04em}
.ab-eyebrow{font-family:var(--f-m);font-size:11.5px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--blue);margin-bottom:10px}
.ab-eyebrow--gold{color:var(--gold)}
.ab-lead{font-size:17px;color:var(--ink-70)}
.ab-tag{display:inline-block;background:var(--gold-pale);color:#7A5300;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:3px 8px;border-radius:3px}
.ab-hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}html{scroll-behavior:auto}}

/* ============ 3. THẺ KHIÊN (badge-shape) — dùng nhất quán toàn site ============ */
.ab-badge{clip-path:polygon(0 0,calc(100% - var(--notch)) 0,100% var(--notch),100% 100%,0 100%)}

/* ============ 4. NÚT ============ */
.ab-btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-family:var(--f-b);font-weight:700;font-size:15px;
  padding:12px 22px;border:2px solid transparent;cursor:pointer;transition:.18s;text-align:center;line-height:1.2;
  clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,0 100%)}
.ab-btn .ab-ic{width:1.1em;height:1.1em}
.ab-btn--lg{padding:15px 28px;font-size:16px}
.ab-btn--block{width:100%;margin-top:10px}
.ab-btn--gold{background:var(--gold);color:var(--navy-0)}
.ab-btn--gold:hover{background:var(--gold-1);color:var(--navy-0)}
.ab-btn--navy{background:var(--navy);color:#fff}
.ab-btn--navy:hover{background:var(--navy-2);color:#fff}
.ab-btn--line{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
.ab-btn--line:hover{border-color:var(--gold);color:var(--gold)}
.ab-btn--line-navy{background:transparent;border-color:var(--navy);color:var(--navy)}
.ab-btn--line-navy:hover{background:var(--navy);color:#fff}
.ab-more{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:14px;color:var(--blue);margin-top:auto}
.ab-more:hover{color:var(--navy)}
.ab-more .ab-ic{transition:.2s}
.ab-more:hover .ab-ic{transform:translateX(3px)}

/* ============ 5. TOPBAR ============ */
.ab-topbar{background:var(--navy-0);color:#B7C7D6;font-size:13px}
.ab-topbar__in{display:flex;justify-content:space-between;align-items:center;gap:20px;min-height:36px}
.ab-topbar__list{display:flex;gap:22px;flex-wrap:wrap}
.ab-topbar__list li,.ab-topbar__right{display:flex;align-items:center;gap:7px}
.ab-topbar .ab-ic{color:var(--gold)}
.ab-topbar a{color:#B7C7D6}
.ab-topbar a:hover{color:var(--gold)}
@media(max-width:760px){.ab-topbar__list li:first-child,.ab-topbar__right{display:none}.ab-topbar__in{justify-content:center}}

/* ============ 6. HEADER (tầng logo + hotline) ============ */
.ab-head{background:#fff;border-bottom:1px solid var(--line)}
.ab-head__in{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:84px}
.ab-brand{display:flex;align-items:center;gap:12px;color:var(--navy)}
.ab-brand:hover{color:var(--navy)}
.ab-brand__img{max-height:64px;width:auto}
.ab-brand__mark{width:52px;height:52px;flex:none}
.ab-brand__mark svg{width:100%;height:100%;display:block}
.ab-brand__txt{display:flex;flex-direction:column;line-height:1.1}
.ab-brand__txt b{font-family:var(--f-h);font-weight:700;font-size:22px;letter-spacing:.04em;text-transform:uppercase}
.ab-brand__txt small{font-size:11.5px;color:var(--ink-45);margin-top:3px;letter-spacing:.02em}
.ab-brand--light{color:#fff}.ab-brand--light:hover{color:#fff}
.ab-brand--light .ab-brand__txt b{color:#fff}
.ab-head__contact{display:flex;align-items:center;gap:22px}
.ab-hotline{display:flex;align-items:center;gap:10px}
.ab-hotline .ab-ic{width:38px;height:38px;padding:9px;background:var(--gold-pale);color:var(--navy);clip-path:polygon(0 0,calc(100% - 7px) 0,100% 7px,100% 100%,0 100%)}
.ab-hotline span{display:flex;flex-direction:column;line-height:1.15}
.ab-hotline small{font-size:11px;color:var(--ink-45);letter-spacing:.06em;text-transform:uppercase}
.ab-hotline a{font-family:var(--f-h);font-size:22px;font-weight:600;color:var(--navy);letter-spacing:.02em}
.ab-hotline a:hover{color:var(--blue)}
.ab-burger{display:none;width:44px;height:44px;border:2px solid var(--navy);background:#fff;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px;padding:0;
  clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,0 100%)}
.ab-burger span{display:block;width:20px;height:2px;background:var(--navy);transition:.2s}
.ab-burger.is-x span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.ab-burger.is-x span:nth-child(2){opacity:0}
.ab-burger.is-x span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(max-width:980px){
  .ab-head__contact{display:none}
  .ab-burger{display:flex}
  .ab-head__in{min-height:70px}
  .ab-brand__mark{width:44px;height:44px}
  .ab-brand__txt b{font-size:18px}
}

/* ============ 7. NAVBAR (dải navy chiếm trọn chiều rộng) ============ */
.ab-navbar{background:var(--navy);position:sticky;top:0;z-index:60;box-shadow:0 4px 14px -8px rgba(8,24,38,.5)}
.ab-nav{display:flex;white-space:nowrap;flex-wrap:wrap}  /* KHÔNG overflow-x:auto — sẽ cắt dropdown submenu */
.ab-nav::-webkit-scrollbar{display:none}
.ab-nav__item{position:relative}
.ab-nav__link{display:block;padding:15px 20px;color:#DCE6EF;font-family:var(--f-h);font-size:15.5px;font-weight:500;letter-spacing:.06em;text-transform:uppercase;border-bottom:3px solid transparent;transition:.15s}
.ab-nav__link:hover{color:#fff;background:var(--navy-1)}
.ab-nav__item.is-active > .ab-nav__link{color:var(--gold);border-bottom-color:var(--gold)}
.ab-nav__more{display:none}
.ab-nav__sub{display:none;position:absolute;top:100%;left:0;min-width:240px;background:#fff;border-top:3px solid var(--gold);box-shadow:var(--shadow);padding:6px 0;z-index:70;white-space:normal}
.ab-nav__item.has-sub:hover > .ab-nav__sub{display:block}
.ab-nav__sub a{display:block;padding:10px 18px;color:var(--ink);font-size:14.5px;font-weight:500}
.ab-nav__sub a:hover{background:var(--bg);color:var(--blue)}
.ab-navbar__mobile{display:none}
@media(max-width:980px){
  .ab-navbar{position:static;display:none;box-shadow:none}
  .ab-navbar.is-open{display:block}
  .ab-nav{flex-direction:column;white-space:normal;overflow:visible}
  .ab-nav__item{border-bottom:1px solid rgba(255,255,255,.08)}
  .ab-nav__link{padding:14px 4px;border-bottom:0;border-left:3px solid transparent;padding-left:14px}
  .ab-nav__item.is-active > .ab-nav__link{border-left-color:var(--gold)}
  .ab-nav__more{display:block;position:absolute;top:8px;right:0;width:40px;height:34px;background:none;border:0;cursor:pointer}
  .ab-nav__more::after{content:"";position:absolute;left:14px;top:9px;width:9px;height:9px;border-right:2px solid var(--gold);border-bottom:2px solid var(--gold);transform:rotate(45deg);transition:.2s}
  .ab-nav__item.is-open > .ab-nav__more::after{transform:rotate(225deg);top:14px}
  .ab-nav__sub{position:static;display:none;background:var(--navy-0);border:0;box-shadow:none;padding:0 0 8px 14px}
  .ab-nav__item.has-sub:hover > .ab-nav__sub{display:none}
  .ab-nav__item.is-open > .ab-nav__sub{display:block}
  .ab-nav__sub a{color:#DCE6EF;padding:9px 14px}
  .ab-nav__sub a:hover{background:transparent;color:var(--gold)}
  .ab-navbar__mobile{display:block;padding:14px 0 18px}
  .ab-navbar__mobile .ab-btn{width:100%}
}

/* ============ 8. HERO TRANG CHỦ ============ */
.ab-hero{background:var(--navy-0);color:#fff;position:relative;overflow:hidden;padding:64px 0 0}
.ab-hero::before{content:"";position:absolute;inset:0;background-image:var(--grid);background-size:32px 32px;pointer-events:none}
.ab-hero::after{content:"";position:absolute;top:-220px;right:-160px;width:640px;height:640px;border-radius:50%;background:radial-gradient(circle,rgba(232,172,31,.22),transparent 65%);pointer-events:none}
.ab-hero__in{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;position:relative;z-index:1}
.ab-hero h1{color:#fff;font-size:clamp(34px,5vw,60px);font-weight:700;margin:14px 0 20px}
.ab-hero h1 em{font-style:normal;color:var(--gold)}
.ab-hero .ab-lead{color:#C7D4E0;max-width:560px}
.ab-hero__cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
.ab-hero__trust{display:flex;flex-direction:column;gap:8px;margin-top:28px;font-size:14px;color:#B7C7D6}
.ab-hero__trust li{display:flex;align-items:center;gap:9px}
.ab-hero__trust .ab-ic{color:var(--gold);width:18px;height:18px}
.ab-hero__vis{position:relative}
@media(max-width:980px){.ab-hero{padding-top:44px}.ab-hero__in{grid-template-columns:1fr;gap:36px}}

/* ============ 9. BẢN ĐỒ TUYẾN TUẦN TRA ============ */
.ab-map svg{width:100%;height:auto;display:block;filter:drop-shadow(0 20px 40px rgba(0,0,0,.45))}
.ab-map__lbl{font-family:var(--f-m);font-size:10px;font-weight:600;fill:#7FA3C8;letter-spacing:.2em;text-anchor:middle}
.ab-map__foot{font-family:var(--f-m);font-size:9.5px;font-weight:600;fill:#7FA3C8;letter-spacing:.14em}
.ab-map__foot--r{text-anchor:end;fill:#3ED07A}
.ab-map__route-bg{fill:none;stroke:#2C5E93;stroke-width:1.5;opacity:.6}
.ab-map__route{fill:none;stroke:var(--gold);stroke-width:2.5;stroke-dasharray:10 8;stroke-linecap:round;animation:abDash 2.2s linear infinite}
.ab-map__route--slow{animation-duration:3.4s;stroke-dasharray:6 8;stroke-width:2}
@keyframes abDash{to{stroke-dashoffset:-36}}
.ab-map__post text{font-family:var(--f-m);font-size:11px;font-weight:600;fill:var(--gold);text-anchor:middle}
.ab-map__post--hq text{fill:var(--navy-0);font-size:13px}
.ab-map__post--hq circle:first-child{animation:abPulse 2.4s ease-in-out infinite}
@keyframes abPulse{0%,100%{transform:scale(1);opacity:.7}50%{transform:scale(1.5);opacity:.15}}
.ab-map__post--hq circle:first-child{transform-origin:260px 200px}
.ab-map__dot{filter:drop-shadow(0 0 6px rgba(242,194,48,.9))}
.ab-map__live{animation:abBlink 1.2s steps(2,start) infinite}
@keyframes abBlink{to{opacity:.2}}

/* ============ 10. SỐ LIỆU ============ */
.ab-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;position:relative;z-index:1;margin-top:56px;transform:translateY(36px)}
.ab-stat{background:#fff;color:var(--navy);padding:22px 22px 20px;display:flex;flex-direction:column;gap:4px;box-shadow:var(--shadow)}
.ab-stat b{font-family:var(--f-h);font-size:40px;font-weight:700;line-height:1;color:var(--navy)}
.ab-stat span{font-size:13.5px;color:var(--ink-45);font-weight:500;letter-spacing:.02em}
.ab-hero + .ab-sec{padding-top:110px}
@media(max-width:900px){.ab-stats{grid-template-columns:repeat(2,1fr)}.ab-stat b{font-size:32px}}
@media(max-width:480px){.ab-stats{gap:10px}.ab-stat{padding:16px}}

/* ============ 11. SECTION CHUNG ============ */
.ab-sec{padding:76px 0}
.ab-sec--grey{background:var(--bg)}
.ab-sec:not(.ab-sec--grey):not(.ab-sec--dark){background:#fff}
.ab-sec--dark{background:var(--navy);color:#fff;position:relative;overflow:hidden}
.ab-sec--dark::before{content:"";position:absolute;inset:0;background-image:var(--grid);background-size:32px 32px;pointer-events:none}
.ab-sec--dark > .ab-wrap{position:relative;z-index:1}
.ab-sechead{max-width:720px;margin-bottom:40px}
.ab-sechead h2{font-size:clamp(26px,3.6vw,40px)}
.ab-sechead .ab-lead{margin-top:12px}
.ab-sechead--light h2{color:#fff}
.ab-sechead--row{max-width:none;display:flex;justify-content:space-between;align-items:flex-end;gap:20px;flex-wrap:wrap}
.ab-secmore{text-align:center;margin-top:34px}
.ab-grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.ab-grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
@media(max-width:980px){.ab-grid3{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.ab-grid3,.ab-grid2{grid-template-columns:1fr}.ab-sec{padding:52px 0}}

/* ============ 12. GIỚI THIỆU NGẮN (trang chủ) ============ */
.ab-intro{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:center}
.ab-intro__card{background:var(--navy-0);color:#fff;padding:44px 34px;position:relative;overflow:hidden;box-shadow:var(--shadow)}
.ab-intro__card::before{content:"";position:absolute;inset:0;background-image:var(--grid);background-size:26px 26px}
.ab-intro__card > *{position:relative}
.ab-intro__shield{width:120px;height:120px;color:var(--gold);margin:0 auto 18px}
.ab-intro__code{text-align:center;font-size:18px;color:var(--gold);letter-spacing:.2em}
.ab-intro__mst{text-align:center;color:#B7C7D6;font-size:13px;margin-top:8px}
.ab-intro__addr{text-align:center;color:#8FA6BB;font-size:13px;margin-top:18px;padding-top:16px;border-top:1px dashed rgba(255,255,255,.15)}
.ab-intro__txt h2{font-size:clamp(24px,3.2vw,36px);margin-bottom:16px}
.ab-intro__txt > p{color:var(--ink-70);margin-bottom:18px}
.ab-checks{display:flex;flex-direction:column;gap:10px;margin-bottom:26px}
.ab-checks li{display:flex;gap:10px;align-items:flex-start;color:var(--ink-70);font-size:15px}
.ab-checks .ab-ic{width:22px;height:22px;flex:none;color:var(--navy);background:var(--gold-pale);padding:4px;margin-top:1px;clip-path:polygon(0 0,calc(100% - 5px) 0,100% 5px,100% 100%,0 100%)}
@media(max-width:900px){.ab-intro{grid-template-columns:1fr;gap:32px}.ab-intro__vis{max-width:420px}}

/* ============ 13. THẺ DỊCH VỤ ============ */
.ab-svc{background:#fff;border:1px solid var(--line);padding:26px 24px 24px;display:flex;flex-direction:column;gap:10px;transition:.2s;position:relative}
.ab-sec--grey .ab-svc{border-color:transparent}
.ab-svc:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--gold)}
.ab-svc__top{display:flex;justify-content:space-between;align-items:center}
.ab-svc__icon{width:52px;height:52px;display:grid;place-items:center;background:var(--navy);color:var(--gold);clip-path:polygon(0 0,calc(100% - 9px) 0,100% 9px,100% 100%,0 100%)}
.ab-svc__icon .ab-ic{width:26px;height:26px}
.ab-svc__code{font-size:12px;color:var(--ink-45)}
.ab-svc h3{font-size:19px}
.ab-svc h3 a{color:var(--navy)}
.ab-svc h3 a:hover{color:var(--blue)}
.ab-svc p{font-size:14.5px;color:var(--ink-70);line-height:1.6}

/* ============ 14. QUY TRÌNH 5 BƯỚC ============ */
.ab-steps{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;counter-reset:s}
.ab-step{background:var(--navy-1);border:1px solid rgba(255,255,255,.08);padding:24px 20px;position:relative;transition:.2s}
.ab-step:hover{background:var(--navy-2);border-color:var(--gold)}
.ab-step__n{display:block;font-size:30px;color:var(--gold);line-height:1;margin-bottom:14px}
.ab-step h3{color:#fff;font-size:17px;margin-bottom:8px}
.ab-step p{font-size:13.5px;color:#B7C7D6;line-height:1.55}
@media(max-width:1000px){.ab-steps{grid-template-columns:repeat(3,1fr)}}
@media(max-width:640px){.ab-steps{grid-template-columns:1fr}}

/* ============ 15. LÝ DO CHỌN / GIÁ TRỊ CỐT LÕI ============ */
.ab-why{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);background:#fff}
.ab-why__item{padding:30px 26px;border-right:1px solid var(--line);position:relative}
.ab-why__item:last-child{border-right:0}
.ab-why__n{font-size:13px;color:var(--gold);display:block;margin-bottom:14px}
.ab-why__n::after{content:"";display:block;width:36px;height:3px;background:var(--gold);margin-top:8px}
.ab-why h3{font-size:18px;margin-bottom:10px}
.ab-why p{font-size:14.5px;color:var(--ink-70);line-height:1.6}
@media(max-width:900px){.ab-why{grid-template-columns:1fr 1fr}.ab-why__item:nth-child(2){border-right:0}.ab-why__item:nth-child(-n+2){border-bottom:1px solid var(--line)}}
@media(max-width:520px){.ab-why{grid-template-columns:1fr}.ab-why__item{border-right:0;border-bottom:1px solid var(--line)}.ab-why__item:last-child{border-bottom:0}}

/* ============ 16. THẺ TIN TỨC ============ */
.ab-news{background:#fff;border:1px solid var(--line);display:flex;flex-direction:column;transition:.2s}
.ab-sec--grey .ab-news{border-color:transparent}
.ab-news:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--gold)}
.ab-news__img{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--navy-0)}
.ab-news__img img{width:100%;height:100%;object-fit:cover;transition:.35s}
.ab-news:hover .ab-news__img img{transform:scale(1.04)}
.ab-ph{display:grid;place-items:center;width:100%;height:100%;background:var(--navy-0);background-image:var(--grid);background-size:24px 24px;color:var(--gold)}
.ab-ph .ab-ic{width:44px;height:44px;opacity:.85}
.ab-news__body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:9px;flex:1}
.ab-news__meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:12px;color:var(--ink-45)}
.ab-news h3{font-size:18px;text-transform:none;letter-spacing:0;line-height:1.35;font-family:var(--f-b);font-weight:700}
.ab-news h3 a{color:var(--navy)}
.ab-news h3 a:hover{color:var(--blue)}
.ab-news p{font-size:14.5px;color:var(--ink-70);line-height:1.6}

/* ============ 17. PAGE HEADER (trang con) ============ */
.ab-pagehead{background:var(--navy-0);color:#fff;padding:44px 0 46px;position:relative;overflow:hidden}
.ab-pagehead::before{content:"";position:absolute;inset:0;background-image:var(--grid);background-size:32px 32px;pointer-events:none}
.ab-pagehead::after{content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(232,172,31,.2),transparent 65%);pointer-events:none}
.ab-pagehead > .ab-wrap{position:relative;z-index:1}
.ab-pagehead h1{color:#fff;font-size:clamp(28px,4vw,46px);max-width:900px}
.ab-pagehead__desc{margin-top:12px;color:#B7C7D6;max-width:720px;font-size:16.5px}
.ab-pagehead .ab-eyebrow{margin-bottom:8px}
.ab-crumb{font-size:13px;color:#8FA6BB;margin-bottom:18px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.ab-crumb a{color:#B7C7D6}
.ab-crumb a:hover{color:var(--gold)}
.ab-crumb__sep{color:#3D5C7A}
.ab-crumb__now{color:var(--gold)}

/* ============ 18. BỐ CỤC TRANG CON + SIDEBAR ============ */
.ab-page{display:grid;grid-template-columns:1fr 330px;gap:40px;padding-top:48px;padding-bottom:70px;align-items:start}
.ab-main{min-width:0}
.ab-side{display:flex;flex-direction:column;gap:18px;position:sticky;top:76px}
.ab-sidebox{background:#fff;border:1px solid var(--line);padding:22px}
.ab-sidebox h4{font-size:16px;margin-bottom:12px;padding-bottom:10px;border-bottom:2px solid var(--gold);display:inline-block}
.ab-sidebox--dark{background:var(--navy-0);border-color:transparent;color:#fff;position:relative;overflow:hidden}
.ab-sidebox--dark::before{content:"";position:absolute;inset:0;background-image:var(--grid);background-size:24px 24px}
.ab-sidebox--dark > *{position:relative}
.ab-sidebox--dark h4{color:#fff;border-bottom:0;padding-bottom:0;font-size:22px;margin-bottom:8px;display:block}
.ab-sidebox--dark p{font-size:14px;color:#B7C7D6;margin-bottom:12px}
.ab-sidelist li{border-bottom:1px solid var(--line)}
.ab-sidelist li:last-child{border-bottom:0}
.ab-sidelist a{display:block;padding:9px 0;font-size:14.5px;color:var(--ink);font-weight:500}
.ab-sidelist a:hover,.ab-sidelist li.is-active a{color:var(--blue)}
@media(max-width:980px){.ab-page{grid-template-columns:1fr;gap:30px}.ab-side{position:static}}

/* ============ 19. BỘ LỌC CHUYÊN MỤC + KHỐI DANH MỤC ============ */
.ab-filter{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:26px}
.ab-filter a{display:block;padding:8px 16px;border:1.5px solid var(--line);background:#fff;font-size:14px;font-weight:600;color:var(--ink-70);
  clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,0 100%);transition:.15s}
.ab-filter a:hover{border-color:var(--navy);color:var(--navy)}
.ab-filter li.is-active a{background:var(--navy);border-color:var(--navy);color:var(--gold)}
.ab-catblock{margin-bottom:40px}
.ab-catblock__title{font-size:22px;margin-bottom:18px;padding-bottom:8px;border-bottom:3px solid var(--gold);display:inline-block}
.ab-catblock__title a{color:var(--navy)}

/* ============ 20. BÀI VIẾT CHI TIẾT ============ */
.ab-article__meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--ink-45);padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:22px}
.ab-article__intro{font-size:18px;line-height:1.6;color:var(--ink);border-left:4px solid var(--gold);padding:4px 0 4px 18px;margin-bottom:24px;font-weight:500}
.ab-article__img{margin:0 0 28px;background:var(--navy-0)}
.ab-article__img img,.ab-article__img svg{width:100%;height:auto;display:block}
.ab-article__body{font-size:16.5px;line-height:1.8;color:#1F2C38}
.ab-article__body h2{font-size:26px;margin:34px 0 14px}
.ab-article__body h3{font-size:20px;margin:26px 0 10px}
.ab-article__body p{margin:0 0 16px}
.ab-article__body ul,.ab-article__body ol{margin:0 0 18px;padding-left:22px}
.ab-article__body ul{list-style:disc}.ab-article__body ol{list-style:decimal}
.ab-article__body li{margin-bottom:7px}
.ab-article__body img{margin:20px 0}
.ab-article__body a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}
.ab-article__body blockquote{margin:22px 0;padding:16px 20px;background:var(--gold-pale);border-left:4px solid var(--gold);color:var(--ink-70)}
.ab-article__body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:15px;display:block;overflow-x:auto}
.ab-article__body th,.ab-article__body td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.ab-article__body th{background:var(--bg);font-weight:700}
.ab-article__body .ab-tags{display:flex;gap:8px;flex-wrap:wrap;margin:6px 0 20px}
.ab-article__body .ab-tags span{background:var(--bg);border:1px solid var(--line);padding:4px 10px;font-size:13px;font-weight:600;color:var(--ink-70)}
.ab-article__sub{margin-top:40px;margin-bottom:22px}
.ab-article__sub h2{font-size:24px}
.ab-article .ab-steps{grid-template-columns:repeat(3,1fr)}
.ab-article .ab-step{background:var(--navy)}
.ab-article .ab-step:hover{background:var(--navy-2)}
@media(max-width:1000px){.ab-article .ab-steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.ab-article .ab-steps{grid-template-columns:1fr}}
.ab-article__cta{margin-top:36px;background:var(--navy-0);color:#fff;padding:28px;display:grid;grid-template-columns:1fr auto;gap:22px;align-items:center;position:relative;overflow:hidden}
.ab-article__cta::before{content:"";position:absolute;inset:0;background-image:var(--grid);background-size:26px 26px}
.ab-article__cta > *{position:relative}
.ab-article__cta h3{color:#fff;font-size:22px;margin-bottom:6px}
.ab-article__cta p{color:#B7C7D6;font-size:14.5px}
.ab-article__cta-act{display:flex;gap:10px;flex-wrap:wrap}
.ab-article__cta .ab-btn--line-navy{border-color:rgba(255,255,255,.55);color:#fff}
.ab-article__cta .ab-btn--line-navy:hover{background:transparent;border-color:var(--gold);color:var(--gold)}
@media(max-width:680px){.ab-article__cta{grid-template-columns:1fr}}
.ab-article__back{margin-top:24px;font-size:14.5px}
.ab-article__back a{color:var(--blue);font-weight:600}
.ab-article__custom{margin-top:26px}
.ab-related{margin-top:48px;padding-top:34px;border-top:1px solid var(--line)}
.ab-related .ab-eyebrow{margin-bottom:18px}

/* ============ 21. GIỚI THIỆU (trang tĩnh gioi-thieu) ============ */
.ab-about{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:start}
.ab-legal{background:var(--navy-0);color:#fff;padding:26px 24px;position:relative;overflow:hidden;box-shadow:var(--shadow)}
.ab-legal::before{content:"";position:absolute;inset:0;background-image:var(--grid);background-size:24px 24px}
.ab-legal > *{position:relative}
.ab-legal__tbl{width:100%;border-collapse:collapse;font-size:14px}
.ab-legal__tbl th,.ab-legal__tbl td{padding:10px 0;border-bottom:1px dashed rgba(255,255,255,.15);vertical-align:top;text-align:left}
.ab-legal__tbl tr:last-child th,.ab-legal__tbl tr:last-child td{border-bottom:0}
.ab-legal__tbl th{width:38%;color:#8FA6BB;font-weight:500;padding-right:12px}
.ab-legal__tbl td{color:#fff;font-weight:500}
.ab-legal__tbl a{color:var(--gold)}
.ab-mv{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.ab-mv__item{background:var(--navy-1);border:1px solid rgba(255,255,255,.08);padding:30px 28px}
.ab-mv__item p{font-size:17px;line-height:1.65;color:#DCE6EF;font-weight:500}
@media(max-width:900px){.ab-about{grid-template-columns:1fr;gap:30px}.ab-mv{grid-template-columns:1fr}}

/* ============ 22. LIÊN HỆ ============ */
.ab-cinfo{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:36px}
.ab-cinfo li{background:#fff;border:1px solid var(--line);padding:22px 20px;display:flex;flex-direction:column;gap:6px;font-size:14.5px;color:var(--ink-70)}
.ab-cinfo .ab-ic{width:40px;height:40px;padding:10px;background:var(--navy);color:var(--gold);margin-bottom:6px;clip-path:polygon(0 0,calc(100% - 7px) 0,100% 7px,100% 100%,0 100%)}
.ab-cinfo b{color:var(--navy);font-family:var(--f-h);font-size:16px;text-transform:uppercase;letter-spacing:.03em}
.ab-cinfo a{color:var(--blue);font-weight:700}
.ab-contact{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:stretch}
.ab-cform{background:#fff;border:1px solid var(--line);padding:32px}
.ab-cform h2{font-size:24px;margin-bottom:22px}
.ab-cmap{background:var(--navy-0);min-height:420px;position:relative}
.ab-cmap iframe{position:absolute;inset:0;width:100%;height:100%;border:0;display:block}
.ab-notice{background:var(--gold-pale);border-left:4px solid var(--gold);padding:12px 16px;margin-bottom:18px;font-size:15px}
.ab-form__row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.ab-fld{margin-bottom:16px}
.ab-fld label{display:block;font-size:13.5px;font-weight:700;margin-bottom:6px;color:var(--ink-70)}
.ab-fld label b{color:#C0392B}
.ab-fld input,.ab-fld select,.ab-fld textarea{width:100%;padding:12px 14px;border:1.5px solid var(--line);background:#fff;color:var(--ink);font-family:var(--f-b);font-size:15px;border-radius:0}
.ab-fld input:focus,.ab-fld select:focus,.ab-fld textarea:focus{border-color:var(--navy);outline:none;box-shadow:0 0 0 3px rgba(11,37,64,.1)}
.ab-fld textarea{resize:vertical;min-height:120px}
.ab-form__note{font-size:13px;color:var(--ink-45);margin-top:12px}
.ab-toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);background:var(--navy-0);color:#fff;padding:14px 22px;font-size:15px;font-weight:600;border-left:4px solid var(--gold);box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.3s;z-index:90;max-width:calc(100% - 32px)}
.ab-toast.is-on{opacity:1;transform:translate(-50%,0)}
@media(max-width:980px){.ab-cinfo{grid-template-columns:repeat(2,1fr)}.ab-contact{grid-template-columns:1fr}.ab-cmap{min-height:320px}}
@media(max-width:600px){.ab-cinfo{grid-template-columns:1fr}.ab-form__row{grid-template-columns:1fr}.ab-cform{padding:22px}}

/* ============ 23. RỖNG + PHÂN TRANG ============ */
.ab-empty{background:#fff;border:1px dashed var(--line);padding:44px 24px;text-align:center}
.ab-empty h3{font-size:20px;margin-bottom:8px}
.ab-empty p{color:var(--ink-70)}
.ab-pager{margin-top:32px;display:flex;justify-content:center;gap:6px;flex-wrap:wrap}
.ab-pager a,.ab-pager span,.ab-pager strong{display:inline-flex;align-items:center;justify-content:center;min-width:40px;height:40px;padding:0 12px;border:1.5px solid var(--line);background:#fff;font-size:14.5px;font-weight:600;color:var(--ink-70);cursor:pointer}
.ab-pager a:hover{border-color:var(--navy);color:var(--navy)}
.ab-pager .active,.ab-pager strong,.ab-pager .current{background:var(--navy);border-color:var(--navy);color:var(--gold)}
.ab-pager .limit,.ab-pager select{display:none!important}

/* ============ 24. DẢI CTA TRƯỚC FOOTER ============ */
.ab-cta{background:var(--navy);color:#fff;position:relative;overflow:hidden;padding:56px 0}
.ab-cta::before{content:"";position:absolute;inset:0;background-image:var(--grid);background-size:32px 32px;pointer-events:none}
.ab-cta::after{content:"";position:absolute;left:-100px;bottom:-200px;width:460px;height:460px;border-radius:50%;background:radial-gradient(circle,rgba(232,172,31,.18),transparent 65%);pointer-events:none}
.ab-cta__in{position:relative;z-index:1;display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center}
.ab-cta h2{color:#fff;font-size:clamp(24px,3.2vw,34px);margin-bottom:10px}
.ab-cta p{color:#B7C7D6;max-width:560px}
.ab-cta__act{display:flex;gap:12px;flex-wrap:wrap}
@media(max-width:800px){.ab-cta__in{grid-template-columns:1fr}.ab-cta{padding:44px 0}}

/* ============ 25. FOOTER ============ */
.ab-foot{background:var(--navy-0);color:#8FA6BB;font-size:14px;padding:56px 0 26px;border-top:4px solid var(--gold)}
.ab-foot__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.ab-foot h4{color:#fff;font-size:15px;letter-spacing:.1em;margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid var(--gold);display:inline-block}
.ab-foot__about{color:#B7C7D6;line-height:1.7;margin-top:14px;max-width:340px}
.ab-foot__mst{margin-top:10px;font-size:13px}
.ab-foot__links li{padding:5px 0}
.ab-foot__links a{color:#B7C7D6}
.ab-foot__links a:hover{color:var(--gold)}
.ab-foot__info li{display:flex;gap:10px;align-items:flex-start;padding:6px 0;line-height:1.55}
.ab-foot__info .ab-ic{color:var(--gold);width:18px;height:18px;margin-top:3px}
.ab-foot__info a{color:#fff;font-weight:600}
.ab-foot__info a:hover{color:var(--gold)}
.ab-foot__bot{margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:#5F7A93}
@media(max-width:900px){.ab-foot__grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.ab-foot__grid{grid-template-columns:1fr;gap:28px}}

/* ============ 26. NÚT GỌI NỔI (mobile) ============ */
.ab-fab{display:none}
@media(max-width:980px){
  .ab-fab{display:flex;position:fixed;left:14px;right:14px;bottom:14px;z-index:80;align-items:center;justify-content:center;gap:10px;height:52px;
    background:var(--gold);color:var(--navy-0);font-family:var(--f-h);font-size:19px;font-weight:600;letter-spacing:.04em;box-shadow:0 12px 28px -8px rgba(232,172,31,.7);
    clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,0 100%)}
  .ab-fab .ab-ic{width:22px;height:22px}
  body.ab{padding-bottom:78px}
}

/* ============ 27. HIỆU ỨNG HIỆN KHI CUỘN ============ */
.ab-reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.ab-reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.ab-reveal{opacity:1;transform:none}}

/* ============ 28. CHẨN ĐOÁN (kiemtra.tpl — xoá khi xong) ============ */
.ab-kiemtra{background:#081826;color:#F2C230;padding:20px;font:12px/1.6 var(--f-m);overflow:auto}
.ab-kiemtra hr{border-color:#1F4C7A}

/* ============ 29. HOOK CẤU TRÚC (không để class mồ côi) ============ */
.ab-hero__txt{max-width:640px}
.ab-head__cta{flex:none}
.ab-foot__col{min-width:0}
.ab-foot__col--brand{max-width:360px}
.ab-about__txt{min-width:0}
.ab-about__side{position:sticky;top:76px}
.ab-article__img--ph{aspect-ratio:800/340}
.ab-count{font-variant-numeric:tabular-nums}
.ab-form{margin:0}

/* ============ 30. MENU CẤP 3 + THÔNG BÁO FORM + PHỤ ============ */
.ab-nav__sub li{position:relative}
.ab-nav__sub2{display:none;position:absolute;top:0;left:100%;min-width:230px;background:#fff;border-top:3px solid var(--gold);box-shadow:var(--shadow);padding:6px 0}
.ab-nav__sub li.has-children:hover > .ab-nav__sub2{display:block}
.ab-nav__sub li.has-children > a::after{content:"›";float:right;color:var(--ink-45)}
@media(max-width:980px){
  .ab-nav__sub2{display:block;position:static;border:0;box-shadow:none;padding:0 0 4px 14px;background:transparent}
  .ab-nav__sub li.has-children > a::after{content:""}
}
.ab-form__alert{display:none;padding:12px 14px;margin-bottom:14px;font-size:14.5px;font-weight:600;border-left:4px solid transparent}
.ab-form__alert.is-ok{display:block;background:#E8F7EE;border-color:#2E9E5B;color:#1B6B3A}
.ab-form__alert.is-err{display:block;background:#FDECEA;border-color:#C0392B;color:#8E2A1F}
.ab-muted{color:var(--ink-45);font-size:14.5px}
@media(max-width:480px){.ab-brand__txt small{display:none}}

/* ============ 31. LOGO/HUY HIỆU THẬT + SLOGAN ============ */
.ab-intro__badge{width:150px;height:auto;margin:0 auto 12px;display:block}
.ab-intro__slogan{text-align:center;font-family:var(--f-h);font-size:22px;color:#fff;letter-spacing:.04em;text-transform:uppercase;margin-bottom:10px}
.ab-intro__code{font-size:14px}
.ab-legal__head{display:flex;gap:14px;align-items:center;margin-bottom:14px}
.ab-legal__head img{width:72px;height:auto;flex:none}
.ab-legal__slogan{font-family:var(--f-h);font-size:17px;color:#fff;text-transform:uppercase;letter-spacing:.03em}
.ab-foot__slogan{color:var(--gold);font-family:var(--f-h);font-size:16px;letter-spacing:.04em;text-transform:uppercase;margin-top:12px}
.ab-foot__mst a{color:#B7C7D6}
.ab-foot__mst a:hover{color:var(--gold)}
.ab-brand--light .ab-brand__img{max-height:72px}

/* ============ 32. SLIDE BANNER ĐẦU TRANG ============ */
.ab-slide{background:var(--navy-0);padding:18px 0 0}
.ab-slider{position:relative;overflow:hidden;clip-path:polygon(0 0,calc(100% - 18px) 0,100% 18px,100% 100%,0 100%)}
.ab-slider__track{display:flex;transition:transform .6s cubic-bezier(.22,.8,.3,1)}
.ab-slider__item{display:block;flex:0 0 100%;min-width:100%}
.ab-slider__item img{width:100%;height:auto;display:block;aspect-ratio:16/6;object-fit:cover}
.ab-slider__btn{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border:0;background:rgba(8,24,38,.55);color:#fff;font-size:30px;line-height:1;cursor:pointer;transition:.15s;display:grid;place-items:center;padding:0 0 4px}
.ab-slider__btn:hover{background:var(--gold);color:var(--navy-0)}
.ab-slider__btn--prev{left:0}.ab-slider__btn--next{right:0}
.ab-slider__dots{position:absolute;left:0;right:0;bottom:12px;display:flex;justify-content:center;gap:8px}
.ab-slider__dots button{width:26px;height:6px;border:0;padding:0;background:rgba(255,255,255,.45);cursor:pointer;transition:.2s}
.ab-slider__dots button.is-on{background:var(--gold);width:40px}
.ab-slider.is-single .ab-slider__btn,.ab-slider.is-single .ab-slider__dots{display:none}
@media(max-width:640px){.ab-slider__btn{width:34px;height:34px;font-size:24px}.ab-slider__dots{bottom:8px}}
.ab-hero{padding-top:52px}