/* ===== Font (tự host, không phụ thuộc Google Fonts) ===== */
@font-face{font-family:"Be Vietnam Pro";font-style:normal;font-display:swap;font-weight:500;src:url(fonts/be-vietnam-pro-vietnamese-500-normal.woff2) format("woff2");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}
@font-face{font-family:"Be Vietnam Pro";font-style:normal;font-display:swap;font-weight:500;src:url(fonts/be-vietnam-pro-latin-ext-500-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Be Vietnam Pro";font-style:normal;font-display:swap;font-weight:500;src:url(fonts/be-vietnam-pro-latin-500-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Be Vietnam Pro";font-style:normal;font-display:swap;font-weight:700;src:url(fonts/be-vietnam-pro-vietnamese-700-normal.woff2) format("woff2");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}
@font-face{font-family:"Be Vietnam Pro";font-style:normal;font-display:swap;font-weight:700;src:url(fonts/be-vietnam-pro-latin-ext-700-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Be Vietnam Pro";font-style:normal;font-display:swap;font-weight:700;src:url(fonts/be-vietnam-pro-latin-700-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Be Vietnam Pro";font-style:normal;font-display:swap;font-weight:800;src:url(fonts/be-vietnam-pro-vietnamese-800-normal.woff2) format("woff2");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}
@font-face{font-family:"Be Vietnam Pro";font-style:normal;font-display:swap;font-weight:800;src:url(fonts/be-vietnam-pro-latin-ext-800-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Be Vietnam Pro";font-style:normal;font-display:swap;font-weight:800;src:url(fonts/be-vietnam-pro-latin-800-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

/* ===== Tokens ===== */
:root{
  --blue:#0338A0; --blue-2:#1d5fd6; --sky:#EAF1FF; --sky-2:#F5F8FF;
  --ink:#14213d; --muted:#55657f; --line:#dbe4f5;
  --green:#12a150; --green-d:#0d8a43; --orange:#e8750a; --red:#d93636; --gold:#c98a00;
  --radius:20px; --shadow:0 12px 32px rgba(3,56,160,.12);
  --max:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{font-family:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;font-weight:500;color:var(--ink);background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}
h1,h2,h3{line-height:1.2;font-weight:800;letter-spacing:-.01em}
h2{font-size:clamp(28px,4vw,42px);color:var(--blue)}
.eyebrow{display:inline-block;font-size:14px;font-weight:700;color:var(--blue-2);background:var(--sky);padding:6px 14px;border-radius:99px;margin-bottom:14px}
.lead{font-size:clamp(17px,2vw,20px);color:var(--muted)}
.section{padding:88px 0}
.section-head{text-align:center;max-width:760px;margin:0 auto 48px}
.section-head .lead{margin-top:14px}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-weight:800;font-size:17px;padding:15px 28px;border-radius:99px;transition:transform .15s,box-shadow .15s,background .15s;white-space:nowrap;cursor:pointer;border:0}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--green);color:#fff;box-shadow:0 10px 24px rgba(18,161,80,.3)}
.btn-primary:hover{background:var(--green-d)}
.btn-ghost{background:#fff;color:var(--blue);border:2px solid var(--line)}
.btn-ghost:hover{border-color:var(--blue)}
.btn-lg{font-size:19px;padding:18px 34px}
.btn svg{width:22px;height:22px;flex:none}

/* ===== Header ===== */
.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:border-color .2s}
.header.scrolled{border-color:var(--line)}
.header .container{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px}
.logo img{height:44px;width:auto}
.nav{display:flex;align-items:center;gap:28px}
.nav a:not(.btn){font-weight:700;color:var(--ink);font-size:16px}
.nav a:not(.btn):hover{color:var(--blue)}
.nav .btn{padding:11px 20px;font-size:15px}
.menu-toggle{display:none;background:none;border:0;padding:8px;cursor:pointer;color:var(--blue)}
.menu-toggle svg{width:28px;height:28px}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;background:#fff}
.hero .container{position:relative;display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:32px;align-items:center;min-height:600px}
.hero-img{margin-right:-60px}
.hero-img img{width:100%;-webkit-mask-image:radial-gradient(ellipse 72% 70% at 58% 50%,#000 62%,transparent 100%);mask-image:radial-gradient(ellipse 72% 70% at 58% 50%,#000 62%,transparent 100%)}
.hero-cta .btn-lg{font-size:17px;padding:16px 24px}
.hero-text{padding:56px 0}
.hero h1{font-size:clamp(32px,4.2vw,52px);color:var(--blue)}
.hero h1 span{color:var(--green)}
.hero .lead{margin-top:20px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-trust{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:26px;font-size:15px;color:var(--muted);font-weight:700}
.hero-trust span::before{content:"✓ ";color:var(--green);font-weight:800}

/* ===== Stats strip ===== */
.strip{background:var(--blue);color:#fff}
.strip .container{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding-top:30px;padding-bottom:30px;text-align:center}
.strip b{display:block;font-size:clamp(22px,3vw,30px);font-weight:800}
.strip span{font-size:15px;opacity:.85}

/* ===== Pain carousel ===== */
.pain{background:var(--sky-2)}
.carousel{position:relative}
.track{display:grid;grid-auto-flow:column;grid-auto-columns:calc((100% - 48px)/3);gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;padding:6px 2px 20px}
.track::-webkit-scrollbar{display:none}
.track figure{scroll-snap-align:start;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:#fff}
.carousel-nav{display:flex;justify-content:center;align-items:center;gap:14px;margin-top:10px}
.carousel-nav button{width:48px;height:48px;border-radius:50%;border:2px solid var(--line);background:#fff;color:var(--blue);font-size:22px;font-weight:800;cursor:pointer}
.carousel-nav button:hover{border-color:var(--blue)}
.dots{display:flex;gap:8px}
.dots i{width:9px;height:9px;border-radius:50%;background:#c3d0ea;transition:all .2s}
.dots i.on{background:var(--blue);width:26px;border-radius:99px}

/* ===== Features ===== */
.feature{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;padding:44px 0}
.feature.reverse .feature-img{order:2}
.feature-img img{border-radius:var(--radius);box-shadow:var(--shadow)}
.feature h3{font-size:clamp(24px,3vw,34px);color:var(--blue);margin-bottom:14px}
.feature p{color:var(--muted);font-size:18px}
.checks{list-style:none;margin-top:20px;display:grid;gap:12px}
.checks li{position:relative;padding-left:36px;font-size:17px}
.checks li::before{content:"";position:absolute;left:0;top:3px;width:24px;height:24px;border-radius:50%;background:var(--green) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5L20 7'/%3E%3C/svg%3E") center/15px no-repeat}

/* ===== Compare table ===== */
.compare{background:var(--sky-2)}
.table-wrap{overflow-x:auto;border-radius:var(--radius);box-shadow:var(--shadow);background:#fff}
table.cmp{width:100%;border-collapse:collapse;min-width:640px}
.cmp th,.cmp td{padding:18px 22px;text-align:left;border-bottom:1px solid var(--line);font-size:16px;vertical-align:top}
.cmp thead th{font-size:17px;font-weight:800;background:#fff}
.cmp thead th:nth-child(2){color:var(--red)}
.cmp thead th:nth-child(3){color:#fff;background:var(--blue)}
.cmp td:first-child{font-weight:800;color:var(--ink);width:24%}
.cmp td:nth-child(2){color:var(--muted)}
.cmp td:nth-child(3){background:#f3f7ff;font-weight:700}
.cmp tr:last-child td{border-bottom:0}

/* ===== Pricing ===== */
.trial{background:linear-gradient(135deg,var(--blue),var(--blue-2));border-radius:28px;color:#fff;padding:36px 44px;display:flex;align-items:center;gap:36px;box-shadow:0 18px 40px rgba(3,56,160,.28);max-width:900px;margin:0 auto}
.trial .big{font-weight:800;font-size:120px;line-height:.85;text-align:center}
.trial .big small{display:block;font-size:26px;margin-top:10px}
.trial h3{font-size:clamp(26px,3.4vw,40px)}
.trial h3 span{color:#FFD84D}
.trial p{margin-top:10px;font-size:18px;opacity:.95}
.plans{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:40px}
.plan{background:#fff;border:2px solid var(--line);border-radius:var(--radius);padding:28px 24px;text-align:center;transition:border-color .2s,transform .2s}
.plan:hover{border-color:var(--blue);transform:translateY(-4px)}
.plan h4{font-size:20px;color:var(--blue);font-weight:800}
.plan .rooms{color:var(--muted);margin-top:4px}
.plan .price{font-size:32px;font-weight:800;margin-top:16px;color:var(--ink)}
.plan .price small{font-size:15px;color:var(--muted);font-weight:500}
.plan .perday{font-size:14px;color:var(--green);font-weight:700;margin-top:4px}
.note{text-align:center;color:var(--muted);font-size:15px;margin-top:16px}
.lifetime{margin:28px auto 0;max-width:900px;border:3px solid var(--gold);background:#FFF8E1;border-radius:24px;padding:26px 32px;display:flex;justify-content:space-between;align-items:center;gap:20px;position:relative}
.lifetime .tag{position:absolute;top:-15px;left:26px;background:var(--gold);color:#fff;font-weight:800;font-size:14px;padding:4px 14px;border-radius:99px}
.lifetime h4{font-size:26px;color:#7a5200;font-weight:800}
.lifetime p{color:#6b5a2e}
.lifetime .price{font-size:40px;font-weight:800;color:#7a5200;text-align:right;line-height:1.1;white-space:nowrap}
.lifetime .price small{display:block;font-size:15px;font-weight:700}

/* ===== FAQ ===== */
.faq-list{max-width:820px;margin:0 auto;display:grid;gap:14px}
.faq-list details{background:#fff;border:2px solid var(--line);border-radius:16px;padding:0 24px}
.faq-list details[open]{border-color:var(--blue)}
.faq-list summary{font-weight:800;font-size:18px;padding:20px 0;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";font-size:26px;line-height:1;color:var(--blue);transition:transform .2s}
.faq-list details[open] summary::after{transform:rotate(45deg)}
.faq-list details p{padding:0 0 20px;color:var(--muted);font-size:17px}

/* ===== Final CTA ===== */
.final{background:linear-gradient(180deg,var(--sky-2),var(--sky))}
.final-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.final-grid img{border-radius:var(--radius);box-shadow:var(--shadow)}
.final h2{font-size:clamp(30px,4vw,46px)}
.final .hero-cta{margin-top:28px}

/* ===== Footer ===== */
.footer{background:#0b1f4d;color:#c9d5ee;padding:56px 0 28px;font-size:15px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
.footer .flogo{background:#fff;display:inline-block;padding:10px 16px;border-radius:14px}
.footer .flogo img{height:40px;width:auto}
.footer h5{color:#fff;font-size:16px;font-weight:800;margin-bottom:12px}
.footer ul{list-style:none;display:grid;gap:8px}
.footer a:hover{color:#fff}
.copy{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:22px;text-align:center;font-size:14px;opacity:.8}

/* ===== Floating Zalo ===== */
.float-zalo{position:fixed;right:18px;bottom:18px;z-index:60;background:#0068FF;color:#fff;font-weight:800;border-radius:99px;padding:14px 20px;box-shadow:0 10px 26px rgba(0,104,255,.4);display:flex;align-items:center;gap:8px;font-size:16px}
.float-zalo svg{width:22px;height:22px}

/* ===== Reveal animation ===== */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}html{scroll-behavior:auto}}

/* ===== Responsive ===== */
@media (max-width:980px){
  .hero .container{grid-template-columns:1fr;min-height:0}
  .hero-text{padding:48px 0 0;max-width:680px}
  .hero-img{margin:0}
  .track{grid-auto-columns:calc((100% - 24px)/2)}
  .plans{grid-template-columns:repeat(2,1fr)}
  .feature{gap:36px}
}
@media (max-width:760px){
  .section{padding:64px 0}
  .menu-toggle{display:block}
  .nav{position:fixed;top:72px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:8px 20px 20px;border-bottom:1px solid var(--line);box-shadow:0 20px 30px rgba(0,0,0,.08);display:none}
  .nav.open{display:flex}
  .nav a:not(.btn){padding:14px 0;border-bottom:1px solid var(--line)}
  .nav .btn{margin-top:14px}
  .logo img{height:38px}
  .hero .container{grid-template-columns:1fr;min-height:0;gap:0}
  .hero-text{padding:36px 0 8px}
  .hero-img{margin:0 -20px}
  .hero-img img{-webkit-mask-image:none;mask-image:none}
  .hero-cta .btn{flex:1}
  .strip .container{grid-template-columns:repeat(2,1fr)}
  .track{grid-auto-columns:86%}
  .feature{grid-template-columns:1fr;gap:24px;padding:28px 0}
  .final-grid{grid-template-columns:1fr;gap:28px}
  /* Bảng so sánh → dạng thẻ trên điện thoại */
  table.cmp{min-width:0}
  .cmp thead{display:none}
  .cmp tr{display:block;border-bottom:1px solid var(--line);padding:16px 18px}
  .cmp tr:last-child{border-bottom:0}
  .cmp td{display:block;border:0;padding:4px 0;width:auto!important;background:none!important}
  .cmp td:first-child{font-size:17px;color:var(--blue);margin-bottom:4px}
  .cmp td:nth-child(2)::before{content:"✗ Excel: ";color:var(--red);font-weight:800}
  .cmp td:nth-child(3)::before{content:"✓ NhaTro.online: ";color:var(--green);font-weight:800}
  .feature.reverse .feature-img{order:0}
  .trial{flex-direction:column;text-align:center;padding:30px 22px;gap:14px}
  .trial .big{font-size:96px}
  .plans{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
  .plan .price small{display:block}
  .plan{padding:20px 12px}
  .plan .price{font-size:24px}
  .lifetime{flex-direction:column;align-items:flex-start;padding:26px 22px}
  .lifetime .price{text-align:left}
  .footer-grid{grid-template-columns:1fr}
  .float-zalo span{display:none}
  .float-zalo{padding:14px}
}

/* ===== Hướng dẫn (trang chủ) ===== */
.guide-card{display:block;max-width:820px;margin:0 auto;background:#fff;border:2px solid var(--line);border-radius:var(--radius);padding:28px 30px;transition:border-color .2s,transform .2s}
.guide-card:hover{border-color:var(--blue);transform:translateY(-4px)}
.guide-card .guide-tag{font-size:14px;font-weight:700;color:var(--green)}
.guide-card h3{font-size:clamp(20px,2.4vw,26px);color:var(--blue);margin:6px 0 10px}
.guide-card p{color:var(--muted);font-size:17px}
.guide-card .guide-more{display:inline-block;margin-top:14px;font-weight:800;color:var(--blue-2)}
.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.guide-grid .guide-card{max-width:none;margin:0;display:flex;flex-direction:column}
.guide-grid .guide-card p{flex:1}
.guide-all{text-align:center;margin-top:40px}
@media (max-width:960px){.guide-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.guide-grid{grid-template-columns:1fr}.guide-card{padding:22px 20px}}

/* ===== Trang /blog/ và 404 ===== */
.section-head h1{font-size:clamp(28px,4vw,42px);color:var(--blue)}
.blog-list .crumbs{max-width:760px;margin:0 auto 18px;text-align:center}
.not-found .hero-cta{justify-content:center}

/* ===== Bài viết blog ===== */
.article{padding:48px 0 88px}
.article .container{max-width:800px}
.crumbs{font-size:14px;color:var(--muted);margin-bottom:18px}
.crumbs a{color:var(--blue-2);font-weight:700}
.crumbs a:hover{text-decoration:underline}
.article h1{font-size:clamp(28px,4.4vw,44px);color:var(--blue)}
.article .meta{margin-top:14px;font-size:15px;color:var(--muted)}
.prose{margin-top:28px;font-size:18px}
.prose p,.prose ul,.prose ol,.prose .tbl-wrap,.prose .callout{margin-top:18px}
.prose h2{font-size:clamp(24px,3.2vw,32px);margin-top:56px;scroll-margin-top:90px}
.prose h3{font-size:clamp(19px,2.4vw,23px);color:var(--ink);margin-top:34px}
.prose ul,.prose ol{padding-left:24px;display:grid;gap:8px}
.prose a:not(.btn){color:var(--blue-2);font-weight:700;text-decoration:underline;text-underline-offset:3px}
.prose strong{font-weight:800}
.prose .formula{background:var(--sky-2);border-left:4px solid var(--blue);border-radius:10px;padding:14px 18px;font-weight:700}
.prose ul.checks{padding-left:0;list-style:none}
.prose .checks li{font-size:18px}
.callout{background:var(--sky);border-radius:16px;padding:20px 24px;margin-bottom: 24px;}
.callout > :first-child{margin-top:0}
.callout ul{margin-top:10px}
.callout.warn{background:#FFF8E1;border:2px solid #f2d27a}
.toc{background:var(--sky-2);border:2px solid var(--line);border-radius:16px;padding:18px 24px}
.toc b{display:block;margin-bottom:6px}
.toc ol{margin-top:0;gap:4px;font-size:17px}
.toc a{color:var(--blue-2)!important;text-decoration:none!important}
.tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:14px;background:#fff}
table.tbl{width:100%;border-collapse:collapse;font-size:16px}
table.tbl.wide{min-width:560px}
.tbl th,.tbl td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.tbl th{background:var(--blue);color:#fff;font-weight:800}
.tbl tr:last-child td{border-bottom:0}
.tbl tr.hl td{background:#f3f7ff;font-weight:800}
.tbl td.num{white-space:nowrap}
.article-cta{background:linear-gradient(135deg,var(--blue),var(--blue-2));color:#fff;border-radius:24px;padding:28px 30px;margin-top:24px}
.article-cta ul{margin-top:14px}
.article-cta .checks li{font-size:17px}
.article-cta .btn{margin-top:22px}
.faq-qa h3{margin-top:26px}
.faq-qa p{margin-top:8px;color:var(--muted)}
.prose hr{border:0;border-top:1px solid var(--line);margin:48px 0 0}
.source{font-size:15px;color:var(--muted);font-style:italic}
@media (max-width:760px){
  .article{padding:32px 0 64px}
  .prose{font-size:17px}
  .article-cta{padding:24px 20px}
  .article-cta .btn{width:100%;white-space:normal}
}

/* ===== Video giới thiệu (#video) ===== */
.video-frame{position:relative;max-width:960px;margin:0 auto;aspect-ratio:16/9;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:var(--sky)}
.video-frame video{display:block;width:100%;height:100%;object-fit:cover;cursor:pointer}
.video-play,.video-mute{position:absolute;display:grid;place-items:center;border:0;border-radius:50%;color:#fff;cursor:pointer;transition:opacity .2s,transform .2s,background .2s}
.video-play{left:50%;top:50%;width:80px;height:80px;transform:translate(-50%,-50%);background:var(--blue);box-shadow:0 12px 30px rgba(3,56,160,.35)}
.video-play:hover{transform:translate(-50%,-50%) scale(1.06)}
.video-play svg{width:34px;height:34px}
.video-play .i-play{margin-left:4px}
/* Nút loa: góc dưới phải ở màn hình rộng; hẹp hơn 1300px chuyển sang dưới trái để nút "Chat Zalo" cố định không đè lên */
.video-mute{left:16px;bottom:16px;width:48px;height:48px;background:rgba(20,33,61,.72)}
@media (min-width:1300px){.video-mute{left:auto;right:16px}}
.video-mute:hover{background:var(--blue)}
.video-mute svg{width:24px;height:24px}
.video-play .i-pause,.video-mute .i-sound{display:none}
/* Đang phát: ẩn nút play lớn (vẫn focus được bằng Tab, hiện lại dạng nút tạm dừng) */
.video-frame.is-playing .video-play{opacity:0;pointer-events:none}
.video-frame.is-playing .video-play:focus-visible{opacity:1;pointer-events:auto}
.video-frame.is-playing .video-play .i-play{display:none}
.video-frame.is-playing .video-play .i-pause{display:block}
.video-frame.is-unmuted .video-mute .i-muted{display:none}
.video-frame.is-unmuted .video-mute .i-sound{display:block}
.video-play:focus-visible,.video-mute:focus-visible{outline:3px solid #fff;outline-offset:2px;box-shadow:0 0 0 7px var(--blue-2)}
.video-cta{text-align:center;margin-top:36px}
@media (max-width:760px){
  .video-frame{border-radius:14px}
  .video-play{width:64px;height:64px}
  .video-play svg{width:28px;height:28px}
  .video-mute{left:10px;bottom:10px;width:44px;height:44px}
  .video-cta .btn{width:100%;white-space:normal}
}
/* Menu (6 link + nút): không xuống dòng; thu khoảng cách ở laptop nhỏ, dưới 1000px chuyển sang menu ☰ như điện thoại */
.nav a{white-space:nowrap}
@media (min-width:1001px) and (max-width:1100px){.nav{gap:18px}}
@media (max-width:1000px){
  .menu-toggle{display:block}
  .nav{position:fixed;top:72px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:8px 20px 20px;border-bottom:1px solid var(--line);box-shadow:0 20px 30px rgba(0,0,0,.08);display:none}
  .nav.open{display:flex}
  .nav a:not(.btn){padding:14px 0;border-bottom:1px solid var(--line)}
  .nav .btn{margin-top:14px}
}