/* ===========================================================
   Govita Solution — Hệ thống thiết kế dùng chung
   Phong cách: Y tế hiện đại (teal/trắng) + điểm nhấn AI tối
   =========================================================== */

:root{
  /* Màu thương hiệu */
  --teal-900:#063b3b;
  --teal-700:#0c6b6b;
  --teal-600:#0d8c8c;
  --teal-500:#14b5ac;
  --teal-400:#34d3c4;
  --mint-100:#e6fbf7;
  --mint-50:#f2fdfb;

  --ink-900:#0a1626;
  --ink-700:#1c2b3a;
  --ink-500:#46586b;
  --ink-400:#6b7c8f;
  --line:#e4ecef;

  --bg:#ffffff;
  --bg-soft:#f5fafa;
  --white:#ffffff;

  /* AI accent (dùng cho section tối) */
  --ai-bg:#070d1c;
  --ai-bg-2:#0c1733;
  --ai-cyan:#38e1d4;
  --ai-violet:#7c6bff;
  --ai-glow:rgba(56,225,212,.35);

  --radius:18px;
  --radius-sm:12px;
  --shadow-sm:0 4px 16px rgba(10,22,38,.06);
  --shadow:0 18px 50px rgba(10,22,38,.10);
  --shadow-lg:0 30px 80px rgba(6,59,59,.18);

  --maxw:1180px;
  --font:"Inter","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  color:var(--ink-700);
  background:var(--bg);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
section{position:relative}

.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- Tiêu đề ---------- */
h1,h2,h3,h4{color:var(--ink-900);line-height:1.2;letter-spacing:-.02em;font-weight:800}
h1{font-size:clamp(2.1rem,5vw,3.5rem)}
h2{font-size:clamp(1.7rem,3.4vw,2.6rem)}
h3{font-size:1.25rem}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.78rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:var(--teal-600);background:var(--mint-100);
  padding:7px 14px;border-radius:999px;margin-bottom:18px;
}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--teal-500)}
.section-head{max-width:900px;margin:0 auto 54px;text-align:center}
.section-head p{color:var(--ink-500);font-size:1.06rem;margin-top:14px}
.lead{color:var(--ink-500);font-size:1.12rem}

/* ---------- Nút ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  font-weight:700;font-size:.96rem;cursor:pointer;border:none;
  padding:14px 26px;border-radius:999px;transition:.25s;white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--teal-500),var(--teal-700));
  color:#fff;box-shadow:0 12px 28px rgba(13,140,140,.32);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(13,140,140,.42)}
.btn-ghost{background:#fff;color:var(--teal-700);border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:var(--teal-400);color:var(--teal-600)}
.btn-light{background:rgba(255,255,255,.12);color:#fff;border:1.5px solid rgba(255,255,255,.25)}
.btn-light:hover{background:rgba(255,255,255,.2)}
.btn-arrow::after{content:"→";transition:.2s}
.btn-arrow:hover::after{transform:translateX(4px)}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.82);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:1.18rem;color:var(--ink-900)}
.brand .logo-mark{
  width:42px;height:42px;border-radius:11px;flex:0 0 42px;
  /* background:linear-gradient(135deg,var(--teal-400),var(--teal-700)); */
  background:#ffffff;
  display:grid;place-items:center;color:#fff;font-weight:900;
  box-shadow:0 6px 16px rgba(13,140,140,.35);
  padding: 2px;
}
.brand small{display:block;font-size:.66rem;font-weight:600;color:var(--teal-600);letter-spacing:.18em;text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{font-weight:600;font-size:.95rem;color:var(--ink-700);transition:.2s}
.nav-links a:hover,.nav-links a.active{color:var(--teal-600)}
.nav-cta{display:flex;align-items:center;gap:14px}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;flex-direction:column;gap:5px}
.nav-toggle span{width:24px;height:2.5px;background:var(--ink-900);border-radius:2px;transition:.3s}

/* ---------- Hero ---------- */
.hero{
  padding:74px 0 90px;overflow:hidden;
  background:
    radial-gradient(60% 80% at 85% -10%,rgba(52,211,196,.16),transparent 60%),
    radial-gradient(50% 60% at 0% 100%,rgba(124,107,255,.08),transparent 60%),
    var(--bg-soft);
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{margin:18px 0 20px}
.hero h1 .grad{
  background:linear-gradient(120deg,var(--teal-500),var(--teal-700));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p{max-width:520px}
.hero-actions{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.hero-stats{display:flex;gap:34px;margin-top:40px;flex-wrap:wrap}
.hero-stats .num{font-size:1.9rem;font-weight:800;color:var(--teal-700)}
.hero-stats .lbl{font-size:.85rem;color:var(--ink-400)}

/* Hero AI panel (điểm nhấn tối) */
.ai-panel{
  background:linear-gradient(160deg,var(--ai-bg),var(--ai-bg-2));
  border-radius:24px;padding:28px;color:#fff;position:relative;
  box-shadow:var(--shadow-lg);overflow:hidden;
  border:1px solid rgba(56,225,212,.18);
}
.ai-panel::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(40% 50% at 80% 0%,var(--ai-glow),transparent 70%);
}
.ai-panel-top{display:flex;align-items:center;justify-content:space-between;position:relative}
.ai-tag{display:inline-flex;align-items:center;gap:8px;font-size:.78rem;font-weight:600;color:var(--ai-cyan)}
.ai-dot{width:8px;height:8px;border-radius:50%;background:var(--ai-cyan);box-shadow:0 0 0 0 var(--ai-glow);animation:pulse 1.8s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 var(--ai-glow)}70%{box-shadow:0 0 0 12px rgba(56,225,212,0)}100%{box-shadow:0 0 0 0 rgba(56,225,212,0)}}
.ai-title{font-size:1.05rem;font-weight:700;margin:22px 0 4px;color:#fff;position:relative}
.ai-sub{font-size:.86rem;color:#9fb2c9;position:relative}
.ai-bars{display:flex;align-items:flex-end;gap:7px;height:90px;margin:22px 0;position:relative}
.ai-bars span{flex:1;border-radius:6px 6px 0 0;background:linear-gradient(180deg,var(--ai-cyan),rgba(56,225,212,.15));animation:rise 1.6s ease infinite alternate}
.ai-bars span:nth-child(2){animation-delay:.2s}.ai-bars span:nth-child(3){animation-delay:.4s}
.ai-bars span:nth-child(4){animation-delay:.6s}.ai-bars span:nth-child(5){animation-delay:.1s}
.ai-bars span:nth-child(6){animation-delay:.5s}.ai-bars span:nth-child(7){animation-delay:.3s}
@keyframes rise{from{height:30%;opacity:.6}to{height:100%;opacity:1}}
.ai-metrics{display:grid;grid-template-columns:1fr 1fr;gap:14px;position:relative}
.ai-metric{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:14px 16px}
.ai-metric .v{font-size:1.5rem;font-weight:800;color:var(--ai-cyan)}
.ai-metric .k{font-size:.78rem;color:#9fb2c9}

/* ---------- Trust strip ---------- */
.trust{padding:30px 0;border-bottom:1px solid var(--line)}
.trust-row{display:flex;align-items:center;justify-content:center;gap:46px;flex-wrap:wrap;color:var(--ink-400);font-weight:700;font-size:.95rem}
.trust-row span{display:flex;align-items:center;gap:9px}

/* ---------- Sections ---------- */
.section{padding:90px 0}
section:has(.stats-band) + .section {padding-top: 0px;}
section:has(.about-hero) + .section {padding-top: 0px;}
#he-thong {padding-top: 0px;}
.section.soft{background:var(--bg-soft)}
/* === Nền y tế cố định (fixed) dùng chung cho các section nền trắng ===
   Dùng MỘT ảnh nền cố định cho cả trang, chỉ hiện xuyên qua các section
   nền trắng. Nhờ vậy 2 (hoặc nhiều) section trắng sát nhau vẫn liền mạch,
   không bị lặp/đè/đường nối giữa các section.
   Muốn thay ảnh: chỉ cần bỏ file assets/phong-benh.jpg là tự ưu tiên dùng. */
body{position:relative;background-color:var(--white)}
body::before{
  content:"";position:fixed;inset:0;z-index:-2;
  background:
    url("phong-benh.jpg") center/cover no-repeat fixed,
    url("https://images.unsplash.com/photo-1778151270682-15e0499454b3?auto=format&fit=crop&w=1600&q=75") center/cover no-repeat fixed;
  filter:blur(7px) saturate(1.05);
  transform:scale(1.06);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(255,255,255,.6),rgba(242,253,251,.55));
}
/* Section nền trắng: trong suốt để lộ nền cố định bên dưới */
.section:not(.soft){position:relative;background:transparent}

/* Tên viết tắt nổi bật cho thẻ hệ thống (HIS, LIS, PACS...) */
.sys-abbr{
  display:block;font-size:2.1rem;font-weight:900;letter-spacing:-.01em;line-height:1;
  margin:2px 0 12px;
  background:linear-gradient(120deg,var(--teal-500),var(--teal-700));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.card .feat-list{margin-top:14px;margin-bottom:0}
.card .feat-list li{font-size:.92rem}

/* Mission / feature cards */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:32px 28px;transition:.28s;box-shadow:var(--shadow-sm);
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(20,181,172,.4)}
.card .ico{
  width:54px;height:54px;border-radius:15px;display:grid;place-items:center;
  background:var(--mint-100);color:var(--teal-700);margin-bottom:20px;
}
.card .ico svg{width:26px;height:26px}
.card h3{margin-bottom:10px}
.card p{color:var(--ink-500);font-size:.98rem}

/* ---------- Product showcase ---------- */
.product{
  display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center;
  padding:34px 0;
}
.product.rev{direction:rtl}
.product.rev>*{direction:ltr}
.product-media{
  border-radius:22px;padding:34px;min-height:300px;position:relative;overflow:hidden;
  display:flex;flex-direction:column;justify-content:center;
  background:linear-gradient(160deg,var(--ai-bg),var(--ai-bg-2));
  border:1px solid rgba(56,225,212,.18);box-shadow:var(--shadow-lg);color:#fff;
}
.product-media::after{content:"";position:absolute;inset:0;background:radial-gradient(45% 55% at 85% 10%,var(--ai-glow),transparent 65%)}
.product-info .badge{
  display:inline-block;font-size:.76rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--teal-700);background:var(--mint-100);padding:6px 13px;border-radius:999px;margin-bottom:16px;
}
.product-info h3{font-size:1.7rem;margin-bottom:14px}
.product-info>p{color:var(--ink-500);margin-bottom:20px}
.feat-list{list-style:none;display:flex;flex-direction:column;gap:12px;margin-bottom:24px}
.feat-list li{display:flex;gap:12px;align-items:flex-start;font-size:.98rem;color:var(--ink-700)}
.feat-list li::before{
  content:"✓";flex:0 0 22px;width:22px;height:22px;border-radius:50%;
  background:var(--mint-100);color:var(--teal-600);font-size:.8rem;font-weight:900;
  display:grid;place-items:center;margin-top:2px;
}

/* mini UI inside product media */
.mini-window{position:relative;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:14px;padding:16px;backdrop-filter:blur(4px)}
.mini-window .dots{display:flex;gap:6px;margin-bottom:14px}
.mini-window .dots i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.25)}
.mini-row{display:flex;align-items:center;justify-content:space-between;padding:9px 0;border-bottom:1px solid rgba(255,255,255,.07);font-size:.85rem;color:#cdd8e6}
.mini-row:last-child{border-bottom:none}
.mini-row b{color:var(--ai-cyan)}
.chip{display:inline-block;font-size:.72rem;padding:3px 10px;border-radius:999px;background:rgba(56,225,212,.14);color:var(--ai-cyan);border:1px solid rgba(56,225,212,.3)}

/* chat bubble demo */
.chat .bubble{max-width:80%;padding:11px 15px;border-radius:14px;font-size:.88rem;margin-bottom:12px}
.chat .bot{background:rgba(255,255,255,.08);color:#dbe6f2;border-bottom-left-radius:4px}
.chat .user{background:linear-gradient(135deg,var(--ai-cyan),var(--teal-500));color:#04201e;margin-left:auto;border-bottom-right-radius:4px;font-weight:600}

/* ---------- AI dark band ---------- */
.ai-band{
  background:linear-gradient(160deg,var(--ai-bg),var(--ai-bg-2));
  color:#fff;padding:96px 0;overflow:hidden;position:relative;
}
.ai-band::before{content:"";position:absolute;inset:0;background:radial-gradient(40% 50% at 15% 0%,rgba(124,107,255,.18),transparent 60%),radial-gradient(40% 50% at 90% 100%,var(--ai-glow),transparent 60%)}
.ai-band .container{position:relative}
.ai-band h2{color:#fff}
.ai-band .eyebrow{background:rgba(56,225,212,.12);color:var(--ai-cyan)}
.ai-band .section-head p{color:#9fb2c9}
.ai-card{
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius);padding:30px 26px;transition:.28s;
}
.ai-card:hover{border-color:rgba(56,225,212,.5);transform:translateY(-6px);background:rgba(56,225,212,.05)}
.ai-card .ico{width:52px;height:52px;border-radius:14px;background:rgba(56,225,212,.12);color:var(--ai-cyan);display:grid;place-items:center;margin-bottom:18px}
.ai-card .ico svg{width:25px;height:25px}
.ai-card h3{color:#fff;margin-bottom:9px}
.ai-card p{color:#9fb2c9;font-size:.95rem}

/* ---------- Stats band ---------- */
.stats-band{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stats-band .num{font-size:2.6rem;font-weight:800;color:var(--teal-600);line-height:1}
.stats-band .lbl{color:var(--ink-500);margin-top:8px;font-size:.95rem}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{display:grid;grid-template-columns:auto 1fr;align-content:start;align-items:center;gap:12px 16px;position:relative;padding-top:8px}
.step .n{grid-column:1;grid-row:1;width:46px;height:46px;border-radius:13px;background:var(--teal-700);color:#fff;font-weight:800;display:grid;place-items:center;margin-bottom:0}
.step h3{grid-column:2;grid-row:1;font-size:1.1rem;margin-bottom:0}
.step p{grid-column:span 2;grid-row:2;color:var(--ink-500);font-size:.94rem}

/* ---------- CTA ---------- */
.cta{
  border-radius:28px;padding:60px;text-align:center;color:#fff;position:relative;overflow:hidden;
  background:linear-gradient(135deg,var(--teal-700),var(--teal-900));
  box-shadow:var(--shadow-lg);
}
.cta::before{content:"";position:absolute;inset:0;background:radial-gradient(40% 80% at 80% 0%,rgba(56,225,212,.3),transparent 60%)}
.cta>*{position:relative}
.cta h2{color:#fff;margin-bottom:14px}
.cta p{color:rgba(255,255,255,.85);max-width:560px;margin:0 auto 28px}
.cta .btn-light{backdrop-filter:blur(4px)}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink-900);color:#aebccd;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px;margin-bottom:40px}
.site-footer .brand{color:#fff}
.site-footer .brand small{color:var(--teal-400)}
.site-footer p{font-size:.94rem;max-width:300px;margin-top:16px}
.footer-col h4{color:#fff;font-size:.95rem;margin-bottom:16px;letter-spacing:.02em}
.footer-col a{display:block;font-size:.92rem;padding:5px 0;color:#aebccd;transition:.2s}
.footer-col a:hover{color:var(--teal-400)}
.footer-contact li{list-style:none;font-size:.92rem;padding:5px 0;display:flex;gap:9px;align-items:flex-start}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.86rem;color:#7a8aa0}

/* ---------- Page hero (trang con) ---------- */
.page-hero{
  padding:64px 0 56px;text-align:center;
  background:radial-gradient(60% 90% at 50% -20%,rgba(52,211,196,.16),transparent 60%),var(--bg-soft);
}
.page-hero p{max-width:620px;margin:16px auto 0;color:var(--ink-500);font-size:1.1rem}
.crumb{font-size:.85rem;color:var(--ink-400);margin-bottom:14px}
.crumb a:hover{color:var(--teal-600)}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:start}
.info-item{display:flex;gap:16px;margin-bottom:26px}
.info-item .ico{flex:0 0 48px;width:48px;height:48px;border-radius:13px;background:var(--mint-100);color:var(--teal-700);display:grid;place-items:center}
.info-item h4{margin-bottom:3px}
.info-item p{color:var(--ink-500);font-size:.96rem}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px;box-shadow:var(--shadow)}
.field{margin-bottom:18px}
.field label{display:block;font-size:.88rem;font-weight:600;margin-bottom:7px;color:var(--ink-700)}
.field input,.field textarea,.field select{
  width:100%;padding:13px 15px;border:1.5px solid var(--line);border-radius:11px;
  font-family:inherit;font-size:.95rem;color:var(--ink-900);transition:.2s;background:#fff;
}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--teal-400);box-shadow:0 0 0 4px rgba(52,211,196,.15)}
.field textarea{resize:vertical;min-height:120px}
.form-note{font-size:.82rem;color:var(--ink-400);margin-top:6px}
.form-success{display:none;background:var(--mint-100);color:var(--teal-700);padding:14px 18px;border-radius:12px;font-weight:600;margin-top:16px}

/* ---------- Value/About ---------- */
.values{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.value{padding:6px}
.value .ico{width:50px;height:50px;border-radius:14px;background:var(--mint-100);color:var(--teal-700);display:grid;place-items:center;margin-bottom:16px}
.value h3{font-size:1.12rem;margin-bottom:8px}
.value p{color:var(--ink-500);font-size:.96rem}
.timeline{max-width:720px;margin:0 auto}
.tl-item{display:grid;grid-template-columns:120px 1fr;gap:24px;padding:22px 0;border-bottom:1px solid var(--line)}
.tl-item .yr{font-weight:800;color:var(--teal-600);font-size:1.1rem}
.tl-item h4{margin-bottom:5px}
.tl-item p{color:var(--ink-500);font-size:.96rem}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:.7s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

/* ===========================================================
   Ảnh & thành phần hình ảnh (nâng cấp giao diện)
   =========================================================== */
.img-frame{position:relative;border-radius:22px;overflow:hidden;box-shadow:var(--shadow-lg)}
.img-frame img{width:100%;height:100%;object-fit:cover;display:block}
.img-frame.tint::after{content:"";position:absolute;inset:0;background:linear-gradient(150deg,rgba(6,59,59,.45),rgba(13,140,140,.12) 45%,rgba(124,107,255,.25))}
.img-frame.tint-dark::after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(7,13,28,.78),rgba(7,13,28,.30) 60%,rgba(56,225,212,.18))}

/* Hero visual với ảnh + thẻ nổi */
.hero-visual{position:relative}
.hero-visual .img-frame{aspect-ratio:4/4.4}
.ai-float{
  position:absolute;left:-22px;bottom:26px;width:230px;z-index:3;
  background:linear-gradient(160deg,var(--ai-bg),var(--ai-bg-2));
  border:1px solid rgba(56,225,212,.25);border-radius:18px;padding:16px 18px;color:#fff;
  box-shadow:0 24px 60px rgba(6,59,59,.4);
}
.ai-float .ai-tag{font-size:.72rem}
.ai-float .v{font-size:1.5rem;font-weight:800;color:var(--ai-cyan);line-height:1.1}
.ai-float .k{font-size:.74rem;color:#9fb2c9}
.stat-float{
  position:absolute;right:-16px;top:26px;z-index:3;background:#fff;border-radius:16px;
  padding:14px 18px;box-shadow:var(--shadow);display:flex;align-items:center;gap:12px;
  border:1px solid var(--line);
}
.stat-float .badge-ico{width:42px;height:42px;border-radius:12px;background:var(--mint-100);color:var(--teal-700);display:grid;place-items:center;flex:0 0 42px}
.stat-float .v{font-size:1.25rem;font-weight:800;color:var(--ink-900);line-height:1}
.stat-float .k{font-size:.74rem;color:var(--ink-400)}

/* Ảnh nền cho product media */
.product-media .media-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.22;z-index:0}
.product-media>*{position:relative;z-index:2}
.product-media::after{z-index:1}

/* Dải gallery ảnh */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.gallery .g-item{position:relative;border-radius:18px;overflow:hidden;aspect-ratio:3/3.4;box-shadow:var(--shadow-sm);transition:.3s}
.gallery .g-item:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.gallery .g-item img{width:100%;height:100%;object-fit:cover;transition:.5s}
.gallery .g-item:hover img{transform:scale(1.06)}
.gallery .g-item .cap{position:absolute;left:0;right:0;bottom:0;padding:16px;color:#fff;font-weight:700;font-size:.95rem;background:linear-gradient(transparent,rgba(7,13,28,.85))}
.gallery .g-item .cap small{display:block;font-weight:500;font-size:.78rem;color:#cfe;opacity:.9;margin-top:2px}

/* Card có ảnh */
.icard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:.28s;display:flex;flex-direction:column}
.icard:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(20,181,172,.4)}
.icard .icard-img{position:relative;aspect-ratio:16/9;overflow:hidden}
.icard .icard-img img{width:100%;height:100%;object-fit:cover;transition:.5s}
.icard:hover .icard-img img{transform:scale(1.05)}
.icard .icard-img .tag{position:absolute;top:14px;left:14px;font-size:.74rem;font-weight:700;color:#04201e;background:var(--ai-cyan);padding:5px 12px;border-radius:999px}
.icard .icard-body{padding:24px 26px 28px}
.icard h3{margin-bottom:9px}
.icard p{color:var(--ink-500);font-size:.96rem}

/* Banner ảnh nền (stats / cta / about) */
.bg-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.has-bg{position:relative;overflow:hidden}
.has-bg>.container{position:relative;z-index:2}
.cta .cta-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.28;z-index:0}
.cta::before{z-index:1}

/* About hero ảnh */
.about-hero{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.about-hero .img-frame{aspect-ratio:4/3.4}

/* Split feature ảnh */
.split{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.split .img-frame{aspect-ratio:4/3.2}

/* ===========================================================
   Hoạt ảnh ICON (dùng chung toàn site)
   =========================================================== */
@keyframes icoFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-5px)}}
@keyframes icoRing{0%{box-shadow:0 0 0 0 rgba(20,181,172,.35)}70%{box-shadow:0 0 0 14px rgba(20,181,172,0)}100%{box-shadow:0 0 0 0 rgba(20,181,172,0)}}
@keyframes icoRingDark{0%{box-shadow:0 0 0 0 rgba(56,225,212,.4)}70%{box-shadow:0 0 0 14px rgba(56,225,212,0)}100%{box-shadow:0 0 0 0 rgba(56,225,212,0)}}
@keyframes icoDraw{from{stroke-dashoffset:320}to{stroke-dashoffset:0}}
@keyframes icoPopIn{0%{transform:scale(.4);opacity:0}60%{transform:scale(1.15)}100%{transform:scale(1);opacity:1}}
@keyframes stepBob{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}

/* "Thở" nhẹ liên tục */
.card .ico,.ai-card .ico,.value .ico,.info-item .ico,.stat-float .badge-ico{
  animation:icoFloat 4.5s ease-in-out infinite;will-change:transform;
}
/* So le nhịp giữa các icon trong cùng hàng */
.grid-3>*:nth-child(2) .ico,.values>*:nth-child(2) .ico{animation-delay:.7s}
.grid-3>*:nth-child(3) .ico,.values>*:nth-child(3) .ico{animation-delay:1.4s}
.grid-2>*:nth-child(2) .ico{animation-delay:.7s}

/* SVG bên trong: mượt khi biến đổi */
.ico svg,.badge-ico svg{transition:transform .45s cubic-bezier(.2,.8,.2,1);transform-origin:center}

/* Tự vẽ nét khi cuộn tới (reveal) */
.reveal.in .ico svg path,.reveal.in .ico svg circle,.reveal.in .ico svg rect,
.reveal.in .ico svg ellipse,.reveal.in .ico svg line,.reveal.in .ico svg polyline,.reveal.in .ico svg polygon{
  stroke-dasharray:320;animation:icoDraw 1.3s ease forwards;
}

/* Rê chuột: icon bật nảy + vòng sóng lan toả */
.card:hover .ico,.value:hover .ico,.info-item:hover .ico{animation:icoFloat 4.5s ease-in-out infinite,icoRing 1.1s ease}
.ai-card:hover .ico{animation:icoFloat 4.5s ease-in-out infinite,icoRingDark 1.1s ease}
.card:hover .ico svg,.ai-card:hover .ico svg,.value:hover .ico svg,.info-item:hover .ico svg{transform:scale(1.18) rotate(-8deg)}

/* Số thứ tự các bước: nảy nhẹ + đổi màu khi hover */
.step .n{animation:stepBob 4s ease-in-out infinite;transition:background .3s,transform .3s}
.step:nth-child(2) .n{animation-delay:.5s}
.step:nth-child(3) .n{animation-delay:1s}
.step:nth-child(4) .n{animation-delay:1.5s}
.step:hover .n{transform:scale(1.12) rotate(6deg);background:var(--teal-500)}

/* Dấu tích trong feat-list: hiện dần khi reveal */
.reveal.in .feat-list li::before{animation:icoPopIn .5s ease both}
.reveal.in .feat-list li:nth-child(2)::before{animation-delay:.1s}
.reveal.in .feat-list li:nth-child(3)::before{animation-delay:.2s}
.reveal.in .feat-list li:nth-child(4)::before{animation-delay:.3s}

/* Tôn trọng thiết lập giảm chuyển động */
@media(prefers-reduced-motion:reduce){
  .card .ico,.ai-card .ico,.value .ico,.info-item .ico,.stat-float .badge-ico,
  .step .n,.ai-dot,.ai-bars span{animation:none!important}
  .reveal.in .ico svg *{animation:none!important;stroke-dasharray:none!important}
}

/* ---------- Responsive ---------- */
@media(max-width:960px){
  .hero-grid,.product,.product.rev,.contact-grid,.about-hero,.split{grid-template-columns:1fr}
  .product.rev{direction:ltr}
  .product-media{order:-1}
  .about-hero .img-frame,.split .img-frame{order:-1}
  .grid-3,.values,.steps,.stats-band{grid-template-columns:1fr 1fr}
  .gallery{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero-visual{max-width:100%;margin:0 auto}

  /* Kích hoạt menu burger dưới 960px (cho cả tablet dọc) */
  .nav-links{
    position:fixed;top:74px;left:0;right:0;background:#fff;flex-direction:column;
    align-items:flex-start;gap:0;padding:10px 24px 24px;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow);transform:translateY(-130%);transition:.35s;
  }
  .nav-links.open{transform:none}
  .nav-links a{padding:13px 0;width:100%;border-bottom:1px solid var(--line);color:var(--ink-700)}
  .nav-toggle{display:flex}
  .nav-cta .btn-ghost{display:none}
}
@media(max-width:640px){
  .grid-3,.grid-2,.values,.steps,.stats-band,.footer-grid,.gallery{grid-template-columns:1fr}
  .section{padding:64px 0}
  .cta{padding:40px 24px}
  .tl-item{grid-template-columns:1fr;gap:6px}
  .ai-float{left:50%;transform:translateX(-50%);bottom:-26px;width:78%}
  .stat-float{right:10px;top:14px;padding:10px 14px}
  .hero-visual{margin-bottom:30px}
}

/* ===========================================================
   Vita AI — Trợ lý nổi (điểm nhấn AI trên toàn site)
   =========================================================== */
.vita-fab{position:fixed;right:26px;bottom:26px;z-index:300;display:flex;align-items:center;gap:12px;cursor:pointer;border:none;background:none;padding:0}
.vita-fab .vita-label{
  background:rgba(7,13,28,.9);color:#eaf6ff;font-weight:700;font-size:.85rem;
  padding:9px 15px;border-radius:999px;box-shadow:var(--shadow);white-space:nowrap;
  border:1px solid rgba(56,225,212,.3);transition:.3s;
}
.vita-fab .vita-label b{background:linear-gradient(120deg,var(--ai-cyan),var(--ai-violet));-webkit-background-clip:text;background-clip:text;color:transparent}
.vita-orb{
  position:relative;width:64px;height:64px;border-radius:50%;flex:0 0 64px;
  background:linear-gradient(140deg,var(--ai-cyan),var(--teal-600) 55%,var(--ai-violet));
  display:grid;place-items:center;color:#04201e;
  box-shadow:0 14px 32px rgba(13,140,140,.5);animation:vitaPulse 2.4s infinite;
}
.vita-orb svg{width:31px;height:31px}
.vita-orb::after{content:"AI";position:absolute;top:-5px;right:-5px;background:var(--ai-violet);color:#fff;font-size:.6rem;font-weight:800;padding:2px 7px;border-radius:999px;letter-spacing:.06em;box-shadow:0 4px 12px rgba(124,107,255,.6)}
.vita-fab:hover .vita-orb{transform:scale(1.06)}
.vita-fab:hover .vita-label{transform:translateX(-2px)}
@keyframes vitaPulse{0%{box-shadow:0 14px 32px rgba(13,140,140,.5),0 0 0 0 var(--ai-glow)}70%{box-shadow:0 14px 32px rgba(13,140,140,.5),0 0 0 18px rgba(56,225,212,0)}100%{box-shadow:0 14px 32px rgba(13,140,140,.5),0 0 0 0 rgba(56,225,212,0)}}

.vita-panel{
  position:fixed;right:26px;bottom:104px;z-index:300;width:350px;max-width:calc(100vw - 36px);
  background:linear-gradient(165deg,var(--ai-bg),var(--ai-bg-2));
  border:1px solid rgba(56,225,212,.28);border-radius:22px;overflow:hidden;color:#fff;
  box-shadow:0 34px 90px rgba(6,59,59,.55);
  transform:translateY(22px) scale(.95);opacity:0;pointer-events:none;
  transition:.32s cubic-bezier(.2,.8,.2,1);transform-origin:bottom right;
}
.vita-panel.open{transform:none;opacity:1;pointer-events:auto}
.vita-head{display:flex;align-items:center;gap:12px;padding:16px 18px;border-bottom:1px solid rgba(255,255,255,.08);background:radial-gradient(120% 120% at 100% 0%,rgba(56,225,212,.18),transparent 60%)}
.vita-head .vita-av{width:40px;height:40px;border-radius:12px;background:linear-gradient(140deg,var(--ai-cyan),var(--ai-violet));display:grid;place-items:center;color:#04201e}
.vita-head .vita-av svg{width:22px;height:22px}
.vita-head h4{color:#fff;font-size:1rem;margin:0;line-height:1.2}
.vita-head .vita-status{font-size:.74rem;color:var(--ai-cyan);display:flex;align-items:center;gap:6px;margin-top:2px}
.vita-head .vita-status::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--ai-cyan);box-shadow:0 0 0 0 var(--ai-glow);animation:pulse 1.8s infinite}
.vita-close{margin-left:auto;background:rgba(255,255,255,.08);border:none;color:#cdd8e6;width:30px;height:30px;border-radius:9px;cursor:pointer;font-size:1.1rem;line-height:1;transition:.2s}
.vita-close:hover{background:rgba(255,255,255,.16);color:#fff}
.vita-body{padding:16px;display:flex;flex-direction:column;gap:10px;max-height:300px;overflow-y:auto}
.vita-msg{max-width:86%;padding:10px 13px;border-radius:14px;font-size:.88rem;line-height:1.5;animation:vitaIn .3s ease}
.vita-msg.bot{background:rgba(255,255,255,.08);color:#dde7f3;border-bottom-left-radius:4px;align-self:flex-start}
.vita-msg.user{background:linear-gradient(135deg,var(--ai-cyan),var(--teal-500));color:#04201e;font-weight:600;align-self:flex-end;border-bottom-right-radius:4px}
@keyframes vitaIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.vita-typing{display:flex;gap:5px;padding:11px 14px;background:rgba(255,255,255,.08);border-radius:14px;align-self:flex-start}
.vita-typing i{width:7px;height:7px;border-radius:50%;background:var(--ai-cyan);animation:vitaDot 1s infinite}
.vita-typing i:nth-child(2){animation-delay:.15s}.vita-typing i:nth-child(3){animation-delay:.3s}
@keyframes vitaDot{0%,60%,100%{opacity:.3;transform:translateY(0)}30%{opacity:1;transform:translateY(-4px)}}
.vita-chips{display:flex;flex-wrap:wrap;gap:8px;padding:0 16px 12px}
.vita-chip{font-size:.78rem;color:var(--ai-cyan);background:rgba(56,225,212,.12);border:1px solid rgba(56,225,212,.3);padding:6px 12px;border-radius:999px;cursor:pointer;transition:.2s}
.vita-chip:hover{background:rgba(56,225,212,.24)}
.vita-input{display:flex;gap:8px;padding:12px 16px;border-top:1px solid rgba(255,255,255,.08)}
.vita-input input{flex:1;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:10px 15px;color:#fff;font-size:.88rem;font-family:inherit;outline:none}
.vita-input input::placeholder{color:#7e90a8}
.vita-input input:focus{border-color:var(--ai-cyan)}
.vita-input button{flex:0 0 40px;width:40px;height:40px;border-radius:50%;border:none;cursor:pointer;background:linear-gradient(135deg,var(--ai-cyan),var(--teal-600));color:#04201e;display:grid;place-items:center}
.vita-input button svg{width:18px;height:18px}
@media(max-width:640px){
  .vita-fab .vita-label{display:none}
  .vita-fab{right:18px;bottom:18px}
  .vita-panel{right:14px;bottom:92px}
}
@media(prefers-reduced-motion:reduce){.vita-orb{animation:none}}

/* //responsive tablet trang chủ */

/* --- TABLET PORTRAIT (Màn hình dọc: 768px - 900px) --- */
@media (min-width: 768px) and (max-width: 900px) {
  .container {
    padding: 0 24px;
  }
  .brand {
    font-size: 1.05rem;
  }
  .brand .logo-mark {
    width: 36px;
    height: 36px;
    flex: 0 0 36px;
  }
  .nav-cta .btn {
    padding: 10px 20px;
    font-size: 0.9rem;
  }

  /* Hero Section dạng dọc (Stack 1 cột) */
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  .hero h1 .grad {
    display: block;
  }
  .hero p {
    margin: 0 auto;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-stats {
    justify-content: center;
    gap: 30px;
  }
  .hero-visual {
    max-width: 88%;
    margin: 0 auto;
  }

  /* Section padding */
  .section {
    padding: 64px 0;
  }
  .section-head {
    margin-bottom: 36px;
    max-width: 650px;
  }

  /* Grid 3 cột -> 2 cột cho tablet dọc */
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .grid-3 > .card:nth-child(3),
  .grid-3 > .ai-card:nth-child(3) {
    grid-column: span 2;
  }

  /* Spotlight sản phẩm dọc */
  .product {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .product-media {
    order: -1;
    min-height: 260px;
  }

  /* Grid 4 cột -> 2 cột */
  .stats-band, .steps, .gallery, .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  
  .cta {
    padding: 48px 32px;
  }

  /* Trust strip cho tablet dọc */
  .trust-row {
    display: grid;
    grid-template-columns: repeat(2, auto);
    grid-template-rows: repeat(2, auto);
    grid-auto-flow: column;
    justify-content: center;
    justify-items: start;
    align-items: center;
    gap: 16px 46px;
  }
}

/* --- TABLET LANDSCAPE (Màn hình ngang: 901px - 1024px) --- */
@media (min-width: 901px) and (max-width: 1024px) {
  .container {
    padding: 0 32px;
  }
  .nav-links {
    gap: 20px;
  }
  .nav-links a {
    font-size: 0.94rem;
  }
  .brand {
    font-size: 1.15rem;
  }

  /* Hero vẫn giữ 2 cột nhưng thu gọn khoảng cách */
  .hero-grid {
    gap: 28px;
  }
  .hero-stats {
    gap: 28px;
  }

  /* Section padding */
  .section {
    padding: 80px 0;
  }
  .section-head {
    max-width: 800px;
  }

  /* Grid 3 cột giữ nguyên nhưng giảm gap */
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  /* Spotlight sản phẩm 2 cột thon gọn */
  .product {
    gap: 36px;
  }
  .product-media {
    min-height: 280px;
  }

  /* Grid 4 cột giữ nguyên nhưng thu hẹp gap */
  .stats-band, .steps {
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
  }

  .gallery {
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
    gap: 24px;
  }

  /* Trust strip cho tablet ngang */
  .trust-row {
    display: flex;
    flex-wrap: nowrap;
    justify-content: center;
    gap: 20px;
    font-size: 0.9rem;
  }
}

/* //responsive mobile trang chủ */

/* --- MOBILE LANDSCAPE (Màn hình ngang: 481px - 767px) --- */
@media (min-width: 481px) and (max-width: 767px) {
  .container {
    padding: 0 16px;
  }
  .brand {
    font-size: 1.05rem;
  }
  .brand .logo-mark {
    width: 34px;
    height: 34px;
    flex: 0 0 34px;
  }
  .brand small {
    display: none;
  }
  .nav-cta .btn {
    padding: 8px 14px;
    font-size: 0.85rem;
  }
  .section {
    padding: 56px 0;
  }
  .hero {
    padding: 48px 0 64px;
    text-align: center;
  }
  .hero h1 {
    font-size: 2.1rem;
  }
  .hero h1 .grad {
    display: block;
  }
  .hero p {
    margin: 0 auto;
    font-size: 0.96rem;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-stats {
    justify-content: center;
    gap: 20px;
  }
  .hero-visual {
    max-width: 100%;
    margin: 0 auto;
  }
  
  .grid-3, .grid-2, .values, .steps, .stats-band, .gallery, .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .grid-3 > .card:nth-child(3),
  .grid-3 > .ai-card:nth-child(3) {
    grid-column: span 2;
  }
  
  .product {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .product-media {
    order: -1;
    min-height: 220px;
  }
  .cta {
    padding: 36px 20px;
  }
  .trust-row {
    display: grid;
    grid-template-columns: repeat(2, auto);
    grid-template-rows: repeat(2, auto);
    grid-auto-flow: column;
    justify-content: center;
    justify-items: start;
    align-items: center;
    gap: 16px 46px;
  }
}

/* --- MOBILE PORTRAIT (Màn hình dọc: <= 480px) --- */
@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
  .brand {
    font-size: 0.95rem;
  }
  .brand .logo-mark {
    width: 32px;
    height: 32px;
    flex: 0 0 32px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(13,140,140,.25);
  }
  .brand small {
    display: none;
  }
  .nav-cta .btn {
    padding: 7px 12px;
    font-size: 0.8rem;
  }

  .section {
    padding: 48px 0;
  }
  .section-head {
    margin-bottom: 28px;
  }
  .section-head h2 {
    font-size: 1.65rem;
  }
  .section-head p {
    font-size: 0.92rem;
  }
  
  .hero {
    padding: 36px 0 54px;
    text-align: center;
  }
  .hero h1 {
    font-size: 1.85rem;
    line-height: 1.25;
  }
  .hero p {
    margin: 0 auto;
    font-size: 0.92rem;
    line-height: 1.45;
  }
  .hero-actions {
    justify-content: center;
    gap: 10px;
  }
  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }
  .hero-stats {
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }
  .hero-stats > div {
    text-align: center;
  }
  .hero-visual {
    max-width: 100%;
  }
  .ai-float {
    width: 85%;
    left: 50%;
    transform: translateX(-50%);
    bottom: -20px;
    padding: 12px 14px;
  }
  .stat-float {
    right: 8px;
    top: 8px;
    padding: 8px 12px;
  }

  .grid-3, .grid-2, .values, .steps, .stats-band, .footer-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .gallery {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .gallery .g-item {
    aspect-ratio: 1;
  }
  
  .product {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .product-media {
    order: -1;
    min-height: 180px;
    padding: 20px;
  }
  .product-info h3 {
    font-size: 1.4rem;
  }
  .product-info .feat-list li {
    font-size: 0.9rem;
  }
  .cta {
    padding: 32px 16px;
  }
  .cta h2 {
    font-size: 1.5rem;
  }
  .cta p {
    font-size: 0.9rem;
    margin-bottom: 20px;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .form-card {
    padding: 24px 20px;
  }
  .timeline {
    padding: 0 10px;
  }
  .tl-item {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 16px 0;
  }
}

/* Responsive adjustments for Systems last card (Liên thông toàn diện) */
@media (max-width: 900px) {
  #he-thong .grid-3 > .card:last-child {
    grid-column: span 2;
    text-align: center;
    align-items: center;
  }
  #he-thong .grid-3 > .card:last-child a.btn {
    align-self: center !important;
  }
}
@media (max-width: 480px) {
  #he-thong .grid-3 > .card:last-child {
    grid-column: span 1;
  }
}

/* Keep values in 3 columns for tablet portrait and mobile landscape */
@media (min-width: 481px) and (max-width: 960px) {
  .values {
    grid-template-columns: repeat(3, 1fr);
  }
}