/* ============================================================
   ONG THỢ — Landing styles (handoff)
   Tất cả class prefix "ot-" để KHÔNG xung đột CSS theme hiện tại.
   Biến thương hiệu nằm trong :root — đổi 1 chỗ, đổi toàn site.
   Font tải qua <link> (xem README), không nhúng @import ở đây.
   ============================================================ */

:root{
  --ot-blue:#1499F5; --ot-blue-d:#0C73C4; --ot-blue-dd:#08538f;
  --ot-ink:#1F2937; --ot-ink-soft:#2C3E50;
  --ot-honey:#FFC233; --ot-honey-d:#F0A500;
  --ot-bg:#F4F8FC; --ot-bg2:#EAF4FE; --ot-line:#E2E8F0; --ot-white:#fff;
  --ot-muted:#697586; --ot-ok:#0F9E6E;
  --ot-radius:16px; --ot-radius-sm:11px;
  --ot-shadow:0 12px 34px -14px rgba(12,84,153,.28);
  --ot-shadow-sm:0 4px 16px -8px rgba(12,84,153,.25);
  --ot-maxw:1180px;
  --ot-font-body:'Be Vietnam Pro',sans-serif;
  --ot-font-head:'Baloo 2','Be Vietnam Pro',sans-serif;
}

/* Scope reset: chỉ áp dụng trong .ot-scope để không phá layout theme */
.ot-scope *{margin:0;padding:0;box-sizing:border-box}
.ot-scope{font-family:var(--ot-font-body);color:var(--ot-ink);background:var(--ot-bg);line-height:1.6;-webkit-font-smoothing:antialiased}
.ot-scope h1,.ot-scope h2,.ot-scope h3,.ot-scope h4{font-family:var(--ot-font-head);line-height:1.15;font-weight:700}
.ot-scope a{text-decoration:none;color:inherit}
.ot-scope img{max-width:100%;display:block}
.ot-wrap{max-width:var(--ot-maxw);margin:0 auto;padding:0 24px}

.ot-btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;padding:13px 24px;border-radius:999px;border:none;cursor:pointer;transition:.2s;font-family:inherit}
.ot-btn-primary{background:var(--ot-blue);color:#fff;box-shadow:0 8px 20px -6px rgba(20,153,245,.6)}
.ot-btn-primary:hover{background:var(--ot-blue-d);transform:translateY(-2px)}
.ot-btn-honey{background:var(--ot-honey);color:var(--ot-ink)}
.ot-btn-honey:hover{background:var(--ot-honey-d);transform:translateY(-2px)}
.ot-btn-ghost{background:#fff;color:var(--ot-ink);border:1.5px solid var(--ot-line)}
.ot-btn-ghost:hover{border-color:var(--ot-blue);color:var(--ot-blue)}
.ot-sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}

/* HEADER */
.ot-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--ot-line)}
.ot-nav{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.ot-brand img{width:96px;height:50px;object-fit:contain}
.ot-nav-links{display:flex;align-items:center;gap:2px}
.ot-nav-links a{padding:8px 12px;border-radius:9px;font-weight:500;font-size:14.5px;color:var(--ot-ink-soft);cursor:pointer;transition:.15s;position:relative;white-space:nowrap}
.ot-nav-links a:hover{background:var(--ot-bg2);color:var(--ot-blue-d)}
.ot-nav-links a.ot-active{color:var(--ot-blue-d);font-weight:600}
.ot-nav-links a.ot-active::after{content:"";position:absolute;left:12px;right:12px;bottom:1px;height:3px;border-radius:3px;background:var(--ot-blue)}
.ot-nav-cta{display:flex;align-items:center;gap:10px}
.ot-burger{display:none;background:none;border:none;font-size:26px;cursor:pointer;color:var(--ot-ink)}

/* PAGE SYSTEM (chỉ dùng nếu chạy bản 1-file SPA; theme đa trang thì bỏ) */
.ot-page{display:none}
.ot-page.ot-show{display:block;animation:ot-fade .4s ease}
@keyframes ot-fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

.ot-section{padding:64px 0}
.ot-eyebrow{display:inline-flex;align-items:center;gap:7px;font-weight:700;font-size:13px;letter-spacing:.5px;text-transform:uppercase;color:var(--ot-blue-d);background:var(--ot-bg2);padding:6px 14px;border-radius:999px;font-family:var(--ot-font-head)}
.ot-h-section{font-size:36px;margin:16px 0 10px}
.ot-sub-section{color:var(--ot-muted);font-size:17px;max-width:640px}
.ot-center{text-align:center}
.ot-center .ot-sub-section{margin:0 auto}
.ot-crumb{font-size:13.5px;color:var(--ot-muted);padding:22px 0 4px}
.ot-crumb b{color:var(--ot-ink)}

/* HERO */
.ot-hero{position:relative;overflow:hidden;background:radial-gradient(1100px 520px at 78% -10%,#cdeafe 0%,rgba(205,234,254,0) 60%),linear-gradient(180deg,#fff 0%,var(--ot-bg) 100%)}
.ot-hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;padding:60px 0 64px}
.ot-hero h1{font-size:54px;letter-spacing:-.5px}
.ot-hero h1 .ot-hl{color:var(--ot-blue)}
.ot-hero p.ot-lead{font-size:19px;color:var(--ot-ink-soft);margin:20px 0 12px;max-width:520px}
.ot-hero-trust{display:flex;gap:20px;margin-top:28px;flex-wrap:wrap}
.ot-hero-trust .ot-t{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ot-ink-soft);font-weight:500}
.ot-hero-trust .ot-t i{color:var(--ot-ok);font-size:20px}
.ot-hero-art{position:relative;display:flex;justify-content:center;align-items:center}
.ot-hero-blob{position:absolute;width:420px;height:420px;border-radius:46% 54% 60% 40%/50% 46% 54% 50%;background:linear-gradient(135deg,var(--ot-blue) 0%,#3fb0ff 100%);opacity:.16;animation:ot-morph 9s ease-in-out infinite}
@keyframes ot-morph{0%,100%{border-radius:46% 54% 60% 40%/50% 46% 54% 50%}50%{border-radius:60% 40% 44% 56%/56% 60% 40% 44%}}
.ot-hero-mascot{position:relative;z-index:2;width:330px;filter:drop-shadow(0 24px 40px rgba(12,84,153,.28))}
.ot-float-card{position:absolute;z-index:3;background:#fff;border-radius:14px;box-shadow:var(--ot-shadow);padding:11px 15px;display:flex;align-items:center;gap:10px;font-weight:600;font-size:14px}
.ot-fc1{top:18px;left:-6px;animation:ot-bob 4s ease-in-out infinite}
.ot-fc2{bottom:48px;right:-10px;animation:ot-bob 4s ease-in-out infinite .8s}
.ot-fc3{bottom:-6px;left:38px;animation:ot-bob 4s ease-in-out infinite 1.6s}
@keyframes ot-bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}
.ot-fc-ic{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;font-size:18px;color:#fff}
.ot-searchbar{margin-top:26px;background:#fff;border-radius:14px;box-shadow:var(--ot-shadow-sm);padding:8px;display:flex;gap:8px;max-width:500px;border:1px solid var(--ot-line)}
.ot-searchbar .ot-inp{flex:1;display:flex;align-items:center;gap:9px;padding:0 12px;color:var(--ot-muted);font-size:15px}
.ot-searchbar .ot-inp i{font-size:20px;color:var(--ot-blue)}

/* SERVICE GRID */
.ot-svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:34px}
.ot-svc-card{background:#fff;border:1px solid var(--ot-line);border-radius:var(--ot-radius);padding:26px 22px;cursor:pointer;transition:.22s;position:relative;overflow:hidden}
.ot-svc-card::before{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:var(--ot-blue);transform:scaleX(0);transform-origin:left;transition:.25s}
.ot-svc-card:hover{transform:translateY(-6px);box-shadow:var(--ot-shadow);border-color:transparent}
.ot-svc-card:hover::before{transform:scaleX(1)}
.ot-svc-ic{width:56px;height:56px;border-radius:15px;background:var(--ot-bg2);display:grid;place-items:center;font-size:28px;color:var(--ot-blue-d);margin-bottom:16px}
.ot-svc-card h3{font-size:21px;margin-bottom:5px}
.ot-svc-card p{color:var(--ot-muted);font-size:14.5px;margin-bottom:14px}
.ot-svc-price{font-weight:700;color:var(--ot-blue-d);font-size:15px;font-family:var(--ot-font-head)}
.ot-svc-card .ot-go{position:absolute;top:24px;right:22px;color:var(--ot-blue);opacity:0;transform:translateX(-6px);transition:.22s;font-size:20px}
.ot-svc-card:hover .ot-go{opacity:1;transform:none}

/* STEPS */
.ot-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:40px}
.ot-step{background:#fff;border:1px solid var(--ot-line);border-radius:var(--ot-radius);padding:28px 22px;text-align:center;position:relative}
.ot-step-n{position:absolute;top:-16px;left:50%;transform:translateX(-50%);width:34px;height:34px;border-radius:50%;background:var(--ot-blue);color:#fff;display:grid;place-items:center;font-weight:800;font-family:var(--ot-font-head);font-size:16px;box-shadow:0 6px 14px -4px rgba(20,153,245,.6)}
.ot-step i{font-size:34px;color:var(--ot-blue-d);margin:14px 0 12px}
.ot-step h4{font-size:18px;margin-bottom:6px}
.ot-step p{font-size:14px;color:var(--ot-muted)}

/* BAND / STATS */
.ot-band{background:linear-gradient(135deg,var(--ot-blue-dd),var(--ot-blue));color:#fff;border-radius:28px;padding:48px 40px;position:relative;overflow:hidden}
.ot-band::after{content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;background:rgba(255,255,255,.08)}
.ot-band::before{content:"";position:absolute;left:-40px;bottom:-70px;width:200px;height:200px;border-radius:50%;background:rgba(255,255,255,.07)}
.ot-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;z-index:2}
.ot-stat{text-align:center}
.ot-stat .ot-num{font-family:var(--ot-font-head);font-weight:800;font-size:42px;line-height:1}
.ot-stat .ot-lab{font-size:14px;opacity:.92;margin-top:6px}
.ot-band-head{text-align:center;position:relative;z-index:2;margin-bottom:32px}
.ot-band-head h2{font-size:30px}
.ot-band-head p{opacity:.9;margin-top:6px}

/* REVIEWS */
.ot-reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:34px}
.ot-review{background:#fff;border:1px solid var(--ot-line);border-radius:var(--ot-radius);padding:24px}
.ot-stars{color:var(--ot-honey-d);font-size:16px;letter-spacing:1px;margin-bottom:10px}
.ot-review p{font-size:15px;color:var(--ot-ink-soft);margin-bottom:16px}
.ot-reviewer{display:flex;align-items:center;gap:11px}
.ot-avatar{width:42px;height:42px;border-radius:50%;background:var(--ot-bg2);color:var(--ot-blue-d);display:grid;place-items:center;font-weight:700;font-family:var(--ot-font-head);font-size:17px}
.ot-reviewer .ot-nm{font-weight:600;font-size:14.5px}
.ot-reviewer .ot-mt{font-size:12.5px;color:var(--ot-muted)}

/* DICH VU - category rows */
.ot-cat-block{background:#fff;border:1px solid var(--ot-line);border-radius:var(--ot-radius);overflow:hidden;margin-bottom:20px}
.ot-cat-head{display:flex;align-items:center;gap:16px;padding:22px 24px;border-bottom:1px solid var(--ot-line);background:var(--ot-bg2)}
.ot-cat-head .ot-ic{width:58px;height:58px;border-radius:16px;background:#fff;display:grid;place-items:center;font-size:30px;color:var(--ot-blue-d);flex-shrink:0;border:1px solid var(--ot-line)}
.ot-cat-head h3{font-size:22px}
.ot-cat-head p{font-size:14px;color:var(--ot-muted);margin-top:2px}
.ot-cat-head .ot-badge{margin-left:auto;font-size:12px;font-weight:700;color:var(--ot-blue-d);background:#fff;border:1px solid var(--ot-blue);padding:6px 13px;border-radius:999px;white-space:nowrap;font-family:var(--ot-font-head)}
.ot-price-table{width:100%;border-collapse:collapse}
.ot-price-table tr{border-bottom:1px solid var(--ot-line)}
.ot-price-table tr:last-child{border-bottom:none}
.ot-price-table td{padding:13px 24px;font-size:14.5px}
.ot-price-table td:first-child{display:flex;align-items:center;gap:10px}
.ot-price-table td:first-child i{color:var(--ot-blue);font-size:18px}
.ot-price-table .ot-pr{text-align:right;font-weight:700;color:var(--ot-blue-d);font-family:var(--ot-font-head);white-space:nowrap}
.ot-price-table .ot-pr small{font-weight:400;color:var(--ot-muted);font-family:var(--ot-font-body);font-size:12px}
.ot-note{font-size:13px;color:var(--ot-muted);display:flex;gap:8px;margin:14px 2px 0;line-height:1.55}
.ot-note i{color:var(--ot-blue);flex-shrink:0;margin-top:2px;font-size:17px}

/* PARTNER */
.ot-partner-hero{background:linear-gradient(135deg,#0b1320,#13243b);color:#fff;border-radius:28px;padding:50px 44px;display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center;overflow:hidden;position:relative}
.ot-partner-hero h2{font-size:38px;line-height:1.12}
.ot-partner-hero h2 .ot-hl{color:var(--ot-honey)}
.ot-partner-hero p{opacity:.85;font-size:16px;margin:16px 0 8px}
.ot-perk{display:flex;gap:11px;align-items:flex-start;margin-top:13px}
.ot-perk i{color:#1499F5;font-size:21px;flex-shrink:0;margin-top:1px}
.ot-perk span{font-size:15px}
.ot-reg-card{background:#fff;border-radius:var(--ot-radius);padding:26px;color:var(--ot-ink)}
.ot-reg-card h3{font-size:21px;margin-bottom:6px}
.ot-reg-card .ot-rsub{font-size:13px;color:var(--ot-muted);margin-bottom:16px}
.ot-input{width:100%;background:var(--ot-bg);border:1px solid var(--ot-line);border-radius:11px;padding:13px 15px;font-size:15px;font-family:inherit;margin-bottom:11px;color:var(--ot-ink)}
.ot-input::placeholder{color:var(--ot-muted)}
select.ot-input{cursor:pointer}
.ot-proc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:38px}
.ot-proc{background:#fff;border:1px solid var(--ot-line);border-radius:var(--ot-radius);padding:22px 16px;text-align:center;position:relative}
.ot-proc .ot-pn{width:30px;height:30px;border-radius:50%;background:var(--ot-honey);color:var(--ot-ink);font-weight:800;font-family:var(--ot-font-head);display:grid;place-items:center;margin:0 auto 12px;font-size:15px}
.ot-proc h4{font-size:15px;margin-bottom:5px}
.ot-proc p{font-size:12.5px;color:var(--ot-muted)}
.ot-benefit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:24px}
.ot-benefit{background:#fff;border:1px solid var(--ot-line);border-radius:var(--ot-radius);padding:22px}
.ot-benefit i{font-size:28px;color:var(--ot-blue-d);margin-bottom:10px}
.ot-benefit h4{font-size:17px;margin-bottom:5px}
.ot-benefit p{font-size:14px;color:var(--ot-muted)}

/* FAQ accordion */
.ot-faq{max-width:820px;margin:26px auto 0;text-align:left}
.ot-faq details{background:#fff;border:1px solid var(--ot-line);border-radius:var(--ot-radius-sm);margin-top:14px;overflow:hidden;transition:.2s}
.ot-faq details[open]{border-color:var(--ot-blue);box-shadow:var(--ot-shadow-sm)}
.ot-faq summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;font-family:var(--ot-font-head);font-weight:700;font-size:16.5px;color:var(--ot-ink)}
.ot-faq summary::-webkit-details-marker{display:none}
.ot-faq summary i{flex-shrink:0;font-size:22px;color:var(--ot-blue);transition:transform .25s}
.ot-faq details[open] summary i{transform:rotate(180deg)}
.ot-faq .ot-faq-a{padding:0 22px 20px;color:var(--ot-ink-soft);font-size:15px;line-height:1.7}

/* ABOUT */
.ot-about-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;margin-top:24px}
.ot-vm-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:24px}
.ot-vm{background:#fff;border:1px solid var(--ot-line);border-radius:var(--ot-radius);padding:26px}
.ot-vm i{font-size:30px;color:var(--ot-blue-d);margin-bottom:10px}
.ot-vm h4{font-size:19px;margin-bottom:6px}
.ot-vm p{font-size:15px;color:var(--ot-muted)}
.ot-value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:24px}
.ot-value{background:#fff;border:1px solid var(--ot-line);border-radius:var(--ot-radius);padding:22px 16px;text-align:center}
.ot-value .ot-vl{width:46px;height:46px;border-radius:13px;background:var(--ot-bg2);display:grid;place-items:center;font-size:24px;color:var(--ot-blue-d);margin:0 auto 12px}
.ot-value h4{font-size:17px;margin-bottom:5px}
.ot-value p{font-size:12.5px;color:var(--ot-muted)}
.ot-promise{background:var(--ot-bg2);border:1px solid var(--ot-blue);border-radius:var(--ot-radius);padding:30px;text-align:center;margin-top:30px}
.ot-promise .ot-q{font-family:var(--ot-font-head);font-weight:800;font-size:26px;color:var(--ot-blue-d)}
.ot-promise .ot-pr-list{display:flex;gap:24px;justify-content:center;flex-wrap:wrap;margin-top:16px}
.ot-promise .ot-pr-list div{display:flex;align-items:center;gap:7px;font-size:14px;font-weight:500}
.ot-promise .ot-pr-list i{color:var(--ot-ok);font-size:19px}
.ot-aura-card{background:#fff;border:1px solid var(--ot-line);border-radius:var(--ot-radius);padding:24px;margin-top:30px;display:flex;gap:18px;align-items:flex-start}
.ot-aura-card .ot-ac-ic{width:50px;height:50px;border-radius:14px;background:var(--ot-bg2);display:grid;place-items:center;font-size:26px;color:var(--ot-blue-d);flex-shrink:0}
.ot-aura-card h4{font-size:18px;margin-bottom:6px}
.ot-aura-card p{font-size:14.5px;color:var(--ot-muted)}

/* LEGAL */
.ot-legal{max-width:860px;margin:0 auto}
.ot-legal h3{font-size:19px;margin:28px 0 10px;color:var(--ot-ink)}
.ot-legal h3:first-of-type{margin-top:0}
.ot-legal p,.ot-legal li{font-size:15px;color:var(--ot-ink-soft);margin-bottom:9px}
.ot-legal ul.ot-bul{padding-left:4px;list-style:none}
.ot-legal ul.ot-bul li{position:relative;padding-left:22px}
.ot-legal ul.ot-bul li::before{content:"";position:absolute;left:4px;top:11px;width:6px;height:6px;border-radius:50%;background:var(--ot-blue)}
.ot-legal .ot-meta{font-size:13px;color:var(--ot-muted);font-style:italic;margin-bottom:24px}
.ot-legal-card{background:#fff;border:1px solid var(--ot-line);border-radius:var(--ot-radius);padding:30px 34px;color:var(--ot-ink-soft);font-size:15.5px;line-height:1.8}
/* Style cho nội dung CMS gen ra bên trong (h1–h4, p, list, bảng, link…) */
.ot-legal-card > :first-child{margin-top:0}
.ot-legal-card > :last-child{margin-bottom:0}
.ot-legal-card h1,.ot-legal-card h2,.ot-legal-card h3,.ot-legal-card h4{font-family:var(--ot-font-head);color:var(--ot-ink);line-height:1.3;margin:30px 0 12px}
.ot-legal-card h1{font-size:27px}
.ot-legal-card h2{font-size:23px}
.ot-legal-card h3{font-size:19px;}
.ot-legal-card h4{font-size:16.5px}
.ot-legal-card p{margin:0 0 14px}
.ot-legal-card b,.ot-legal-card strong{color:var(--ot-ink);font-weight:700}
.ot-legal-card a{color:var(--ot-blue-d);font-weight:600;text-decoration:underline;text-underline-offset:2px}
.ot-legal-card a:hover{color:var(--ot-blue)}
.ot-legal-card ul,.ot-legal-card ol{margin:0 0 16px;padding-left:4px;list-style:none}
.ot-legal-card li{position:relative;margin-bottom:9px}
.ot-legal-card ul li{padding-left:20px}
.ot-legal-card ol li{padding-left:26px}
.ot-legal-card ul li::before{content:"";position:absolute;left:5px;top:11px;width:6px;height:6px;border-radius:50%;background:var(--ot-blue)}
.ot-legal-card ol{counter-reset:ot-li}
.ot-legal-card ol li{counter-increment:ot-li}
.ot-legal-card ol li::before{content:counter(ot-li);position:absolute;left:0;top:2px;width:19px;height:19px;border-radius:50%;background:var(--ot-bg2);color:var(--ot-blue-d);font-size:11.5px;font-weight:700;font-family:var(--ot-font-head);display:grid;place-items:center;line-height:1}
.ot-legal-card i,.ot-legal-card em{color:var(--ot-muted)}
.ot-legal-card blockquote{margin:0 0 16px;padding:14px 18px;background:var(--ot-bg);border-left: 4px solid #1499F5;border-radius:0 10px 10px 0}
.ot-legal-card img{border-radius:10px}
.ot-legal-card hr{border:none;border-top:1px solid var(--ot-line);margin:26px 0}
/* !important để thắng inline-style mà CMS/trình soạn thảo gắn vào <table>.
   separate + overflow:hidden để bo góc 10px ĂN CHẮC; viền NGOÀI ở table,
   kẻ TRONG là border-right/bottom của ô (bỏ ở ô cuối & hàng cuối) → 1 viền, không chồng. */
.ot-legal-card table{width:100%!important;height:auto!important;border-collapse:separate!important;border-spacing:0!important;border-radius:10px;overflow:hidden;margin:0 0 16px}
.ot-legal-card th,.ot-legal-card td{border-bottom:1px solid var(--ot-line);border-right:1px solid var(--ot-line);padding:10px 14px;text-align:left;height:auto!important}
.ot-legal-card th:last-child,.ot-legal-card td:last-child{border-right:none}
.ot-legal-card tr:last-child td{border-bottom:none}
.ot-legal-card th{background:var(--ot-bg2);font-family:var(--ot-font-head);color:var(--ot-ink)}
.ot-legal-card table tr, .ot-legal-card table tr td{border:none!important}
/* APP */
.ot-appcta{background:linear-gradient(135deg,var(--ot-blue-dd),var(--ot-blue));border-radius:28px;color:#fff;padding:46px;display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center;overflow:hidden;position:relative}
.ot-appcta h2{font-size:32px}
.ot-appcta p{opacity:.92;margin-top:8px;max-width:440px}
.ot-store-row{display:flex;gap:12px;margin-top:20px;flex-wrap:wrap}
.ot-store-btn{background:#fff;color:var(--ot-ink);border-radius:13px;padding:11px 18px;display:flex;align-items:center;gap:11px;font-weight:600;cursor:pointer}
.ot-store-btn i{font-size:28px}
.ot-store-btn small{display:block;font-size:11px;font-weight:400;color:var(--ot-muted)}
.ot-qr{background:#fff;border-radius:18px;padding:14px;display:grid;place-items:center;width:140px;height:140px}
.ot-qr .ot-qbox{width:100%;height:100%;background:repeating-linear-gradient(0deg,#1F2937 0 6px,transparent 6px 12px),repeating-linear-gradient(90deg,#1F2937 0 6px,transparent 6px 12px);opacity:.85;border-radius:8px}
.ot-app-two{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:34px}
.ot-app-card{background:#fff;border:1px solid var(--ot-line);border-radius:var(--ot-radius);padding:28px;text-align:center}
.ot-app-card .ot-ic{width:64px;height:64px;border-radius:18px;background:var(--ot-bg2);display:grid;place-items:center;font-size:32px;color:var(--ot-blue-d);margin:0 auto 14px}
.ot-app-card h3{font-size:20px;margin-bottom:6px}
.ot-app-card p{font-size:14px;color:var(--ot-muted);margin-bottom:16px}

/* FOOTER */
.ot-footer{background:#0d1117;color:#aeb6c2;margin-top:30px;padding:54px 0 30px}
.ot-foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:34px}
.ot-footer img{height:50px;width:96px;margin-bottom:14px}
.ot-footer .ot-desc{font-size:14px;line-height:1.7;max-width:300px}
.ot-foot-soc{display:flex;gap:10px;margin-top:16px}
.ot-foot-soc a{width:38px;height:38px;border-radius:10px;background:#1a212c;display:grid;place-items:center;color:#aeb6c2;font-size:18px;transition:.15s;cursor:pointer}
.ot-foot-soc a:hover{background:var(--ot-blue);color:#fff}
.ot-foot-bct{display:inline-block;margin-top:18px}
.ot-foot-bct img{width:150px;height:auto;margin-bottom:0}
.ot-footer h5{color:#fff;font-size:15px;font-weight:700;margin-bottom:14px;font-family:var(--ot-font-head)}
.ot-footer ul{list-style:none}
.ot-footer li{margin-bottom:9px}
.ot-footer li a{font-size:14px;cursor:pointer;transition:.15s}
.ot-footer li a:hover{color:var(--ot-blue)}
.ot-foot-contact div{display:flex;gap:9px;font-size:14px;margin-bottom:10px;align-items:flex-start}
.ot-foot-contact i{color:var(--ot-blue);font-size:18px;margin-top:1px;flex-shrink:0}
.ot-foot-bottom{border-top:1px solid #1a212c;margin-top:40px;padding-top:22px;font-size:13px;color:#6b7480;line-height:1.7;display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap}
.ot-foot-bottom .ot-foot-bct-text{display:inline-flex;align-items:center;gap:6px;color:var(--ot-blue);font-weight:600}
.ot-foot-bottom .ot-foot-bct-text i{font-size:16px}
.ot-foot-bottom .ot-foot-bct-text:hover{text-decoration:underline}

/* ============================================================
   RESPONSIVE — desktop-first; mốc: 1200 / 992 / 768 / 576
   ≥992px : menu ngang đầy đủ.  <992px : thu gọn còn nút hamburger.
   ============================================================ */

/* ===== < 992px : tablet & mobile — header thu gọn thành hamburger ===== */
@media (max-width: 991.98px) {
  /* Menu xổ xuống dạng dropdown, mở/đóng bằng class .ot-open (JS) */
  .ot-nav-links{
    display:none;
    position:absolute; top:68px; left:0; right:0;
    flex-direction:column; align-items:stretch; gap:4px;
    background:#fff; padding:14px 20px;
    border-bottom:1px solid var(--ot-line); box-shadow:var(--ot-shadow);
  }
  .ot-nav-links.ot-open{display:flex}
  .ot-nav-links a{padding:12px; border-radius:9px}
  .ot-nav-links a.ot-active::after{display:none}
  .ot-burger{display:block}

  /* Bố cục 2 cột → xếp chồng */
  .ot-hero-grid,.ot-about-grid,.ot-partner-hero,.ot-appcta,.ot-app-two,.ot-vm-grid{grid-template-columns:1fr}
  .ot-hero-grid{padding:40px 0 48px}
  .ot-hero-art{order:-1; min-height:300px}

  /* Lưới thẻ → ít cột hơn */
  .ot-svc-grid,.ot-reviews,.ot-benefit-grid,.ot-value-grid{grid-template-columns:repeat(2,1fr)}
  .ot-steps,.ot-proc-grid{grid-template-columns:repeat(3,1fr)}
  .ot-foot-grid{grid-template-columns:repeat(2,1fr)}

  /* Cỡ chữ */
  .ot-hero h1{font-size:40px}
  .ot-h-section{font-size:29px}
}

/* ===== < 768px : tablet dọc / điện thoại lớn ===== */
@media (max-width: 767.98px) {
  .ot-wrap{padding:0 18px}
  .ot-section{padding:48px 0}
  .ot-svc-grid,.ot-reviews,.ot-benefit-grid,.ot-value-grid,.ot-steps,.ot-proc-grid{grid-template-columns:repeat(2,1fr)}
  /* Trang chủ: chỉ hiện 4 dịch vụ đầu trên mobile (desktop/tablet vẫn 6) */
  .ot-svc-grid .ot-svc-card:nth-child(n+5){display:none}
  .ot-float-card{display:none}
  .ot-hero h1{font-size:34px}
  .ot-hero p.ot-lead{font-size:17px}
  .ot-h-section{font-size:26px}
  .ot-band{padding:36px 26px}
  .ot-band-head h2{font-size:25px}
}

/* ===== < 576px : điện thoại dọc — 1 cột ===== */
@media (max-width: 575.98px) {
  .ot-svc-grid,.ot-steps,.ot-stats,.ot-reviews,.ot-proc-grid,.ot-benefit-grid,.ot-value-grid,.ot-foot-grid{grid-template-columns:1fr!important}
  .ot-hero h1{font-size:30px}
  .ot-h-section{font-size:23px}
  .ot-sub-section{font-size:15.5px}
  .ot-section{padding:40px 0}
  .ot-appcta,.ot-legal-card{padding:24px}
  .ot-band{padding:28px 20px}
  .ot-cat-head{flex-wrap:wrap}
  .ot-cat-head .ot-badge{margin-left:0}
  .ot-price-table td{padding:11px 14px; font-size:14px}
  .ot-btn{padding:12px 20px}
  .ot-faq summary{padding:16px 18px; font-size:15.5px}
  .ot-faq .ot-faq-a{padding:0 18px 18px}
  .ot-crumb{padding:16px 0 4px}
}