/* ============================================================
   VNPT BRVT — theme vnpt2026 (frontend)
   Design theo demo: nền sáng, xanh VNPT, bo góc lớn, đổ bóng mềm
   ============================================================ */

:root {
    --blue-950: #071F4D;
    --blue-900: #0A2A66;
    --blue-800: #0D3D8F;
    --blue-700: #0D47A1;
    --blue-600: #1465C0;
    --blue-500: #1E88E5;
    --accent: #00B0FF;
    --cyan: #38CFFF;
    --bg: #F4F8FC;
    --surface: #FFFFFF;
    --border: #E3EBF4;
    --text: #10233F;
    --muted: #5A6B85;
    --radius: 16px;
    --shadow: 0 8px 30px rgba(13, 61, 143, .08);
    --shadow-lg: 0 16px 48px rgba(13, 61, 143, .16);
    --container: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    font-size: 15px;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }

/* ---------- Nút ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 26px; border-radius: 999px; font-weight: 600; font-size: 14px;
    transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
    white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: linear-gradient(135deg, var(--blue-600), var(--blue-500)); color: #fff; box-shadow: 0 8px 20px rgba(20, 101, 192, .35); }
.btn-primary:hover { box-shadow: 0 12px 26px rgba(20, 101, 192, .45); }
.btn-outline { border: 1.5px solid rgba(255, 255, 255, .7); color: #fff; }
.btn-outline:hover { background: rgba(255, 255, 255, .12); }
.btn-white { background: #fff; color: var(--blue-700); box-shadow: 0 8px 20px rgba(0, 0, 0, .18); }
.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
    position: sticky; top: 0; z-index: 60;
    background: linear-gradient(90deg, var(--blue-950), var(--blue-800));
    color: #fff;
    box-shadow: 0 2px 18px rgba(7, 31, 77, .35);
}
.header-inner { display: flex; align-items: center; gap: 28px; height: 64px; }
.brand { display: flex; align-items: center; gap: 11px; }
.brand-logo-img { width: 42px; height: 42px; object-fit: contain; display: block; }
.brand-name { font-size: 20px; font-weight: 800; letter-spacing: .5px; line-height: 1.1; }
.brand-sub { font-size: 10px; letter-spacing: 1.6px; color: var(--cyan); font-weight: 600; }

.main-nav { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.main-nav > li { position: relative; }
.main-nav a.nav-link {
    display: flex; align-items: center; gap: 5px;
    padding: 10px 13px; font-size: 13.5px; font-weight: 600; letter-spacing: .3px;
    border-radius: 8px; text-transform: uppercase; color: #E3EEFF;
    transition: background .15s;
}
.main-nav a.nav-link:hover, .main-nav > li.active > a.nav-link { background: rgba(255, 255, 255, .12); color: #fff; }
.nav-caret { border: solid currentColor; border-width: 0 1.5px 1.5px 0; padding: 2.5px; transform: rotate(45deg) translateY(-2px); }

.dropdown {
    position: absolute; top: calc(100% + 8px); left: 0; min-width: 230px;
    background: #fff; color: var(--text); border-radius: 12px; box-shadow: var(--shadow-lg);
    padding: 8px; opacity: 0; visibility: hidden; transform: translateY(8px);
    transition: all .18s ease;
}
.main-nav li:hover .dropdown, .main-nav li:focus-within .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown a { display: block; padding: 10px 14px; border-radius: 8px; font-size: 14px; font-weight: 500; }
.dropdown a:hover { background: var(--bg); color: var(--blue-600); }

.header-hotline { display: flex; align-items: center; gap: 10px; margin-left: 8px; }
.hotline-icon {
    width: 38px; height: 38px; border-radius: 50%; background: rgba(255, 255, 255, .16);
    display: grid; place-items: center; padding: 9px;
    color: #fff; /* icon SVG trắng, không dùng emoji đỏ nữa */
}
.hotline-num { font-size: 17px; font-weight: 800; line-height: 1.1; }
.hotline-note { font-size: 11px; color: var(--cyan); }

.nav-toggle { display: none; width: 42px; height: 42px; border-radius: 10px; color: #fff; margin-left: auto; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: #fff; margin: 5px auto; border-radius: 2px; transition: .2s; }

/* ---------- Hero ---------- */
.hero {
    position: relative; overflow: hidden; color: #fff;
    background:
        radial-gradient(900px 500px at 85% 20%, rgba(0, 176, 255, .35), transparent 60%),
        radial-gradient(700px 420px at 105% 80%, rgba(56, 207, 255, .25), transparent 60%),
        linear-gradient(110deg, #0A2E73 0%, #0D47A1 45%, #1876D2 75%, #35A3E8 100%);
}
.hero::before {
    content: ""; position: absolute; inset: 0;
    background:
        radial-gradient(2px 2px at 15% 30%, rgba(255,255,255,.7), transparent 40%),
        radial-gradient(2px 2px at 70% 60%, rgba(255,255,255,.5), transparent 40%),
        radial-gradient(1.5px 1.5px at 40% 80%, rgba(255,255,255,.6), transparent 40%),
        radial-gradient(2px 2px at 88% 35%, rgba(255,255,255,.6), transparent 40%);
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; gap: 30px; padding: 64px 20px 58px; align-items: center; }
.hero-kicker { font-size: 26px; font-weight: 600; letter-spacing: 1px; }
.hero-title { font-size: 46px; font-weight: 900; letter-spacing: .5px; line-height: 1.12; margin: 2px 0 14px; text-shadow: 0 4px 24px rgba(0, 0, 0, .25); }
.hero-desc { font-size: 16px; color: #DDEBFF; max-width: 420px; }

.hero-services { display: flex; gap: 8px; margin: 26px 0 30px; flex-wrap: wrap; }
.hero-service {
    flex: 1 1 86px; max-width: 108px; text-align: center; padding: 12px 6px;
    border: 1px solid rgba(255, 255, 255, .25); border-radius: 14px;
    background: rgba(255, 255, 255, .08); backdrop-filter: blur(4px);
    font-size: 12px; line-height: 1.35; transition: background .15s, transform .15s;
}
.hero-service:hover { background: rgba(255, 255, 255, .18); transform: translateY(-3px); }
.hero-service .ico { display: block; width: 24px; height: 24px; margin: 0 auto 7px; color: #fff; }
.hero-service .ico svg { width: 100%; height: 100%; display: block; }

.hero-cta { display: flex; gap: 14px; }

.hero-visual { position: relative; min-height: 320px; }
.hero-5g {
    position: absolute; right: 4%; top: 50%; transform: translateY(-50%);
    font-size: 150px; font-weight: 900; letter-spacing: 2px; line-height: 1;
    background: linear-gradient(180deg, #FFFFFF, #9FDCFF 60%, #4FB7F0);
    -webkit-background-clip: text; background-clip: text; color: transparent;
    filter: drop-shadow(0 10px 30px rgba(0, 60, 130, .45));
}
.hero-ring {
    position: absolute; border: 2px solid rgba(255, 255, 255, .18); border-radius: 50%;
    animation: pulse 3.6s ease-out infinite;
}
.hero-ring.r1 { width: 260px; height: 260px; right: 0; top: 50%; margin-top: -130px; }
.hero-ring.r2 { width: 380px; height: 380px; right: -60px; top: 50%; margin-top: -190px; animation-delay: 1.2s; }
.hero-ring.r3 { width: 500px; height: 500px; right: -120px; top: 50%; margin-top: -250px; animation-delay: 2.4s; }
@keyframes pulse { 0% { opacity: .9; transform: scale(.92); } 100% { opacity: 0; transform: scale(1.08); } }

.hero-city { position: absolute; left: 0; right: 0; bottom: 0; width: 100%; height: 220px; pointer-events: none; opacity: .95; }

.hero-dots { position: relative; display: flex; gap: 8px; justify-content: center; padding-bottom: 22px; }
.hero-dots i { width: 8px; height: 8px; border-radius: 50%; background: rgba(255, 255, 255, .4); }
.hero-dots i.on { background: #fff; width: 22px; border-radius: 99px; }

/* ---------- Section chung ---------- */
.section { padding: 64px 0; }
.section-head { text-align: center; margin-bottom: 36px; }
.section-title { font-size: 30px; font-weight: 800; letter-spacing: .5px; text-transform: uppercase; }
.section-title em { font-style: normal; color: var(--blue-500); }
.section-sub { color: var(--muted); margin-top: 6px; }

/* ---------- Dịch vụ nổi bật ---------- */
.services-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.service-card {
    background: var(--surface); border-radius: var(--radius); overflow: hidden;
    box-shadow: var(--shadow); border: 1px solid var(--border);
    display: flex; flex-direction: column; transition: transform .18s, box-shadow .18s;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.service-thumb { aspect-ratio: 16 / 11; position: relative; overflow: hidden; }
.service-thumb svg { width: 100%; height: 100%; display: block; }
.service-body { padding: 16px 16px 14px; flex: 1; display: flex; flex-direction: column; }
.service-name { font-size: 14.5px; font-weight: 800; text-transform: uppercase; color: var(--blue-800); }
.service-desc { font-size: 13px; color: var(--muted); margin: 6px 0 12px; flex: 1; }
.service-foot { display: flex; align-items: center; justify-content: space-between; border-top: 1px solid var(--border); padding-top: 11px; }
.service-price { font-size: 13px; color: var(--muted); }
.service-price b { color: var(--blue-600); font-size: 15px; }
.service-arrow {
    width: 30px; height: 30px; border-radius: 50%; background: var(--blue-500); color: #fff;
    display: grid; place-items: center; font-size: 14px; transition: background .15s;
}
.service-card:hover .service-arrow { background: var(--blue-700); }

/* ---------- Combo banner ---------- */
.combo {
    border-radius: 22px; color: #fff; overflow: hidden; position: relative;
    background: linear-gradient(105deg, #0A2E73, #0D47A1 55%, #1876D2);
    box-shadow: var(--shadow-lg);
    display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 26px;
    padding: 34px 40px;
}
.combo::before { content: ""; position: absolute; inset: 0; background: radial-gradient(500px 260px at 78% 0%, rgba(0, 176, 255, .3), transparent 60%); }
.combo > * { position: relative; }
.combo-title { font-size: 24px; font-weight: 800; text-transform: uppercase; line-height: 1.25; }
.combo-save { display: flex; align-items: baseline; gap: 10px; margin-top: 8px; }
.combo-save b { font-size: 52px; font-weight: 900; color: var(--cyan); line-height: 1; }
.combo-save span { font-size: 13px; color: #CFE4FF; max-width: 140px; line-height: 1.35; }
.combo-items { display: flex; align-items: center; gap: 14px; }
.combo-item { text-align: center; }
.combo-item .box {
    width: 92px; height: 72px; border-radius: 14px; display: grid; place-items: center; color: #fff;
    background: rgba(255, 255, 255, .12); border: 1px solid rgba(255, 255, 255, .25);
}
.combo-item .box svg { width: 36px; height: 36px; }
.combo-item small { display: block; margin-top: 7px; font-size: 11px; letter-spacing: 1.2px; font-weight: 700; }
.combo-plus { font-size: 26px; font-weight: 800; color: var(--cyan); }

/* ---------- Bảng giá + Vì sao ---------- */
.split { display: grid; grid-template-columns: 1.15fr .85fr; gap: 44px; align-items: start; }
.split-head { margin-bottom: 22px; }
.split-title { font-size: 24px; font-weight: 800; text-transform: uppercase; }
.split-title em { font-style: normal; color: var(--blue-500); }
.split-sub { color: var(--muted); font-size: 14px; margin-top: 4px; }

.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; align-items: stretch; }
.plan {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 22px 18px 18px; position: relative; box-shadow: var(--shadow);
    display: flex; flex-direction: column; transition: transform .18s, box-shadow .18s;
}
.plan:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.plan.hot { border: 2px solid var(--blue-500); transform: translateY(-8px); }
.plan-badge {
    position: absolute; top: -12px; right: 14px; background: linear-gradient(135deg, var(--blue-500), var(--accent));
    color: #fff; font-size: 11px; font-weight: 700; padding: 4px 12px; border-radius: 99px;
    letter-spacing: .5px; box-shadow: 0 6px 14px rgba(0, 176, 255, .4);
}
.plan-name { font-weight: 800; font-size: 15px; letter-spacing: .5px; }
.plan-price { color: var(--blue-600); font-size: 21px; font-weight: 900; margin: 6px 0 2px; }
.plan-price small { font-size: 12px; font-weight: 600; color: var(--muted); }
.plan-speed { font-size: 13px; color: var(--muted); border-bottom: 1px dashed var(--border); padding-bottom: 10px; margin-bottom: 10px; }
.plan-speed b { color: var(--text); font-size: 17px; }
.plan-feats { flex: 1; display: grid; gap: 7px; font-size: 13px; margin-bottom: 14px; }
.plan-feats li { display: flex; gap: 8px; align-items: start; }
.plan-feats li::before { content: "✓"; color: var(--blue-500); font-weight: 800; }
.plans-more { text-align: right; margin-top: 14px; font-size: 13.5px; font-weight: 600; color: var(--blue-600); }
.plans-more a:hover { text-decoration: underline; }

.whys { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.why {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 20px; display: flex; gap: 14px; box-shadow: var(--shadow); transition: transform .18s;
}
.why:hover { transform: translateY(-4px); }
.why-ico {
    flex: 0 0 46px; width: 46px; height: 46px; border-radius: 12px; padding: 10px;
    background: linear-gradient(135deg, #E3F2FF, #CFE9FF); color: var(--blue-600);
    display: grid; place-items: center;
}
.why h4 { font-size: 14.5px; font-weight: 800; text-transform: uppercase; color: var(--blue-800); }
.why p { font-size: 13px; color: var(--muted); margin-top: 4px; }

/* ---------- Khách hàng + Tin tức ---------- */
.split2 { display: grid; grid-template-columns: .8fr 1.4fr; gap: 40px; align-items: start; }
.clients-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 16px; }
.clients-nav { display: flex; gap: 8px; }
.clients-nav button {
    width: 30px; height: 30px; border-radius: 50%; background: var(--surface);
    border: 1px solid var(--border); color: var(--blue-600); font-size: 17px; font-weight: 700;
    display: grid; place-items: center; box-shadow: var(--shadow); transition: background .15s;
}
.clients-nav button:hover { background: var(--blue-500); color: #fff; }
.split2 .client-logo { flex: 0 0 118px; height: 70px; font-size: 12.5px; }
.split2 .news-grid { grid-template-columns: repeat(3, 1fr); }
.split2 .news-title { font-size: 13px; }
.split2 .news-excerpt { display: none; }

.clients-track { display: flex; gap: 14px; align-items: stretch; overflow-x: auto; scrollbar-width: none; padding: 4px; scroll-behavior: smooth; }
.clients-track::-webkit-scrollbar { display: none; }
.client-logo {
    flex: 0 0 150px; height: 76px; background: var(--surface); border: 1px solid var(--border);
    border-radius: 12px; display: grid; place-items: center; font-weight: 800; color: var(--blue-800);
    font-size: 14px; text-align: center; box-shadow: var(--shadow); padding: 8px;
}
.client-logo small { display: block; font-size: 10px; color: var(--muted); font-weight: 600; letter-spacing: 1px; }

.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.news-card {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    overflow: hidden; box-shadow: var(--shadow); display: flex; flex-direction: column;
    transition: transform .18s, box-shadow .18s;
}
.news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.news-thumb { aspect-ratio: 16 / 9; position: relative; overflow: hidden; }
.news-thumb img, .news-thumb svg { width: 100%; height: 100%; object-fit: cover; display: block; }
.news-body { padding: 14px 16px 16px; flex: 1; display: flex; flex-direction: column; }
.news-title { font-size: 14.5px; font-weight: 700; line-height: 1.4; }
.news-card:hover .news-title { color: var(--blue-600); }
.news-excerpt { font-size: 13px; color: var(--muted); margin: 6px 0 10px; flex: 1;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-meta { font-size: 12px; color: var(--muted); display: flex; justify-content: space-between; }
.news-more { text-align: right; margin-top: 16px; font-size: 13.5px; font-weight: 600; color: var(--blue-600); }

/* Tin tức dạng hàng ngang: thumbnail trái — nội dung phải */
.news-list { display: grid; gap: 14px; }
.news-row {
    display: grid; grid-template-columns: 210px 1fr; align-items: stretch;
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    overflow: hidden; box-shadow: var(--shadow); transition: transform .18s, box-shadow .18s, border-color .18s;
}
.news-row:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: #C9DFF5; }
.news-row-thumb { min-height: 128px; position: relative; overflow: hidden; }
.news-row-thumb img, .news-row-thumb svg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.news-row-body { padding: 15px 20px 13px; display: flex; flex-direction: column; gap: 5px; min-width: 0; }
.news-row-meta { display: flex; align-items: center; gap: 10px; }
.news-chip {
    background: #E9F3FE; color: var(--blue-600); font-size: 11px; font-weight: 700;
    letter-spacing: .4px; text-transform: uppercase; padding: 3px 10px; border-radius: 99px;
}
.news-date { font-size: 12px; color: var(--muted); }
.news-row-title {
    font-size: 15.5px; font-weight: 700; line-height: 1.45; color: var(--text);
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
    transition: color .15s;
}
.news-row:hover .news-row-title { color: var(--blue-600); }
.news-row-excerpt {
    font-size: 13px; color: var(--muted);
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-row-more { margin-top: auto; padding-top: 4px; font-size: 12.5px; font-weight: 600; color: var(--blue-600); }
.qr-img { width: 52px; height: 52px; border-radius: 8px; border: 3px solid #fff; object-fit: cover; }
.client-logo img { max-width: 118px; max-height: 52px; object-fit: contain; }

/* ---------- CTA cuối: form + tổng đài ---------- */
.cta-band {
    border-radius: 24px; overflow: hidden; color: #fff; position: relative;
    background:
        radial-gradient(600px 300px at 90% 100%, rgba(0, 176, 255, .35), transparent 60%),
        linear-gradient(105deg, #071F4D, #0A2E73 55%, #0D47A1);
    box-shadow: var(--shadow-lg);
    display: grid; grid-template-columns: 1fr 1fr; gap: 30px; padding: 36px 40px;
}
.cta-band::before {
    content: ""; position: absolute; inset: 0;
    background: radial-gradient(2px 2px at 20% 20%, rgba(255,255,255,.5), transparent 40%),
                radial-gradient(2px 2px at 60% 70%, rgba(255,255,255,.35), transparent 40%);
}
.cta-band > * { position: relative; }
.lead-form { background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .18); border-radius: 18px; padding: 22px; backdrop-filter: blur(4px); }
.lead-form h3 { font-size: 17px; font-weight: 800; text-transform: uppercase; margin-bottom: 14px; }
.lead-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 10px; }
.lead-form input, .lead-form select {
    width: 100%; padding: 11px 14px; border-radius: 10px; border: 1px solid rgba(255, 255, 255, .25);
    background: rgba(255, 255, 255, .92); font: inherit; font-size: 13.5px; color: var(--text);
}
.lead-form input:focus, .lead-form select:focus { outline: 2px solid var(--accent); }
.lead-msg { font-size: 13px; margin-top: 10px; color: var(--cyan); min-height: 18px; }

.support-side { display: flex; flex-direction: column; justify-content: center; }
.support-side h3 { font-size: 15px; letter-spacing: 2px; font-weight: 700; color: var(--cyan); text-transform: uppercase; }
.support-phone { font-size: 44px; font-weight: 900; margin: 4px 0 18px; }
.support-phone small { font-size: 15px; font-weight: 600; color: #CFE4FF; }
.support-channels { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.support-chip { text-align: center; font-size: 11.5px; }
.support-chip .c {
    width: 52px; height: 52px; border-radius: 50%; margin: 0 auto 6px; padding: 14px;
    background: rgba(255, 255, 255, .12); border: 1px solid rgba(255, 255, 255, .25);
    display: grid; place-items: center; color: #fff;
    transition: background .15s, transform .15s;
}
.support-chip:hover .c { background: rgba(255, 255, 255, .22); transform: translateY(-3px); }
.support-qr {
    display: flex; gap: 10px; align-items: center; background: rgba(255, 255, 255, .1);
    border: 1px solid rgba(255, 255, 255, .22); border-radius: 14px; padding: 10px 14px; font-size: 12px;
}
.qr-box { width: 52px; height: 52px; border-radius: 8px; background:
    repeating-conic-gradient(#0A2A66 0% 25%, #fff 0% 50%) 0 0 / 14px 14px; border: 3px solid #fff; }

/* ---------- Footer ---------- */
.site-footer { background: linear-gradient(180deg, var(--blue-950), #050F2E); color: #C6D6EF; margin-top: 64px; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr 1.2fr; gap: 30px; padding: 48px 0 36px; }
.footer-brand p { font-size: 13px; margin-top: 12px; color: #93A9CE; }
.footer-col h4 { color: #fff; font-size: 13px; letter-spacing: 1.2px; text-transform: uppercase; margin-bottom: 14px; }
.footer-col li { margin-bottom: 9px; font-size: 13.5px; }
.footer-col a:hover { color: var(--cyan); }
.footer-contact li { display: flex; gap: 9px; align-items: start; }
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .1); padding: 16px 0; font-size: 12.5px; color: #7E94BC;
    display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap;
}
.footer-social { display: flex; gap: 10px; }
.footer-social a {
    width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center;
    background: rgba(255, 255, 255, .1); font-size: 15px; transition: background .15s;
}
.footer-social a:hover { background: var(--blue-500); color: #fff; }

/* ---------- Trang tin tức / bài viết ---------- */
.page-hero {
    color: #fff; padding: 44px 0; text-align: center;
    background: linear-gradient(110deg, #0A2E73, #0D47A1 60%, #1876D2);
}
.page-hero h1 { font-size: 30px; font-weight: 800; text-transform: uppercase; }
.page-hero .crumb { font-size: 13px; color: #BBD7FF; margin-top: 6px; }
.article { max-width: 800px; margin: 0 auto; background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); box-shadow: var(--shadow); padding: 34px 38px; }
.article h1.post-title { font-size: 27px; line-height: 1.3; margin-bottom: 10px; }
.article .post-meta { font-size: 13px; color: var(--muted); border-bottom: 1px solid var(--border); padding-bottom: 14px; margin-bottom: 20px; }
.post-content { font-size: 15.5px; line-height: 1.85; }
.post-content h2 { font-size: 21px; margin: 26px 0 10px; }
.post-content h3 { font-size: 17px; margin: 20px 0 8px; }
.post-content p { margin-bottom: 14px; }
.post-content img { border-radius: 12px; margin: 10px 0; }
.post-content ul, .post-content ol { margin: 0 0 14px 22px; }
.post-content blockquote { border-left: 4px solid var(--blue-500); background: var(--bg); padding: 12px 18px; border-radius: 0 10px 10px 0; margin-bottom: 14px; color: var(--muted); }
.post-tags { margin-top: 22px; display: flex; gap: 8px; flex-wrap: wrap; }
.post-tags span { background: #E9F3FE; color: var(--blue-600); font-size: 12px; font-weight: 600; padding: 5px 12px; border-radius: 99px; }
.empty-note { text-align: center; color: var(--muted); padding: 40px 0; }

/* ---------- Trang Hỗ trợ / Liên hệ ---------- */
.support-grid { display: grid; grid-template-columns: 320px 1fr; gap: 32px; align-items: start; }
.support-card {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    box-shadow: var(--shadow); padding: 22px; position: sticky; top: 84px;
}
.support-card h3 { font-size: 15px; font-weight: 800; text-transform: uppercase; color: var(--blue-800); margin-bottom: 10px; }
.support-card-phone { display: block; font-size: 26px; font-weight: 900; color: var(--blue-600); }
.support-card-note { font-size: 13px; color: var(--muted); margin-bottom: 14px; }
.support-card-links { display: grid; gap: 8px; margin-top: 12px; }
.contact-list { display: grid; gap: 10px; font-size: 14px; margin-bottom: 6px; }
.contact-list a:hover { color: var(--blue-600); }
.faq-list { display: grid; gap: 10px; }
.faq-item {
    background: var(--surface); border: 1px solid var(--border); border-radius: 14px;
    box-shadow: var(--shadow); overflow: hidden;
}
.faq-item summary {
    list-style: none; cursor: pointer; padding: 15px 44px 15px 18px; font-weight: 700; font-size: 14.5px;
    position: relative; transition: color .15s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
    content: "+"; position: absolute; right: 16px; top: 50%; transform: translateY(-50%);
    width: 24px; height: 24px; border-radius: 50%; background: #E9F3FE; color: var(--blue-600);
    display: grid; place-items: center; font-weight: 800;
}
.faq-item[open] summary { color: var(--blue-600); }
.faq-item[open] summary::after { content: "−"; background: var(--blue-500); color: #fff; }
.faq-answer { padding: 0 18px 16px; font-size: 14px; color: var(--muted); line-height: 1.75; }
.lead-form-light { background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow); }
.lead-form-light input, .lead-form-light select { border: 1px solid var(--border); }
.lead-form-light .lead-msg { color: var(--blue-600); }
@media (max-width: 860px) { .support-grid { grid-template-columns: 1fr; } .support-card { position: static; } }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
    .services-grid { grid-template-columns: repeat(3, 1fr); }
    .split, .split2 { grid-template-columns: 1fr; }
    .combo { grid-template-columns: 1fr; text-align: center; }
    .combo-items { justify-content: center; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .hero-5g { font-size: 110px; }
}
@media (max-width: 860px) {
    .main-nav {
        position: fixed; inset: 64px 0 auto 0; flex-direction: column; align-items: stretch; gap: 0;
        background: var(--blue-900); padding: 10px 14px 18px; display: none;
        box-shadow: 0 20px 30px rgba(0, 0, 0, .35); max-height: calc(100vh - 64px); overflow-y: auto;
    }
    .main-nav.open { display: flex; }
    .main-nav a.nav-link { padding: 13px 10px; border-bottom: 1px solid rgba(255, 255, 255, .08); border-radius: 0; }
    .dropdown { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none;
        background: transparent; color: #C9DCFA; padding: 0 0 6px 18px; display: none; }
    .main-nav li.open .dropdown { display: block; }
    .dropdown a:hover { background: rgba(255, 255, 255, .08); color: #fff; }
    .nav-toggle { display: block; }
    .header-hotline { margin-left: 0; }
    .hotline-note { display: none; }

    .hero-inner { grid-template-columns: 1fr; padding: 44px 20px 40px; }
    .hero-visual { min-height: 200px; }
    .hero-5g { font-size: 96px; right: 12%; }
    .hero-title { font-size: 33px; }

    .cta-band { grid-template-columns: 1fr; padding: 26px 22px; }
    .support-phone { font-size: 34px; }
}
@media (max-width: 640px) {
    .section { padding: 44px 0; }
    .section-title { font-size: 23px; }
    .services-grid { grid-template-columns: 1fr 1fr; }
    .plans { grid-template-columns: 1fr; }
    .plan.hot { transform: none; }
    .whys { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 22px; }
    .lead-grid { grid-template-columns: 1fr; }
    .combo-save b { font-size: 40px; }
    .hero-cta { flex-direction: column; }
    .article { padding: 22px 18px; }
    .news-row { grid-template-columns: 128px 1fr; }
    .news-row-excerpt { display: none; }
    .news-row-body { padding: 12px 14px 10px; }
    .news-row-title { font-size: 14px; }
}

/* ============================================================
   Chuyển động — hiện dần khi cuộn, hover nổi khối, nền gradient thở.
   Toàn bộ tắt khi người dùng bật "giảm chuyển động" trong hệ điều hành.
   ============================================================ */
/* Chỉ ẩn khi JS đã bật cờ `js-motion` — JS lỗi hay bị chặn thì nội dung vẫn hiện */
.js-motion .reveal {
    opacity: 0; transform: translateY(22px);
    transition: opacity .7s cubic-bezier(.22, .61, .36, 1), transform .7s cubic-bezier(.22, .61, .36, 1);
    will-change: opacity, transform;
}
.js-motion .reveal.is-visible { opacity: 1; transform: none; }
.reveal-1 { transition-delay: .08s; }
.reveal-2 { transition-delay: .16s; }
.reveal-3 { transition-delay: .24s; }
.reveal-zoom { transform: translateY(16px) scale(.97); }

/* Header co lại + đổ bóng khi cuộn */
.site-header { transition: box-shadow .3s, padding .3s, background .3s; }
.site-header.scrolled { box-shadow: 0 10px 30px rgba(13, 61, 143, .18); backdrop-filter: blur(8px); }

/* Thẻ nổi lên khi rê chuột */
.service-card, .plan, .promo-card, .combo-card, .news-row {
    transition: transform .28s cubic-bezier(.22, .61, .36, 1), box-shadow .28s, border-color .28s;
}
.service-card:hover, .plan:hover, .combo-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.service-card:hover .service-arrow { transform: translateX(5px); }
.service-arrow { transition: transform .25s; }

/* Nút: ánh sáng quét qua khi rê chuột */
.btn { position: relative; overflow: hidden; }
.btn::after {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, .35) 50%, transparent 70%);
    transform: translateX(-120%); transition: transform .6s;
}
.btn:hover::after { transform: translateX(120%); }
.btn-primary:hover { box-shadow: 0 12px 28px rgba(20, 101, 192, .45); }

/* Hero: nền gradient chuyển động chậm + nội dung trôi lên khi tải trang */
.hero { background-size: 180% 180%; animation: heroShift 18s ease-in-out infinite; }
@keyframes heroShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}
.hero-inner > * { animation: floatUp .8s cubic-bezier(.22, .61, .36, 1) both; }
.hero-inner > *:nth-child(2) { animation-delay: .1s; }
.hero-inner > *:nth-child(3) { animation-delay: .2s; }
.hero-inner > *:nth-child(4) { animation-delay: .3s; }
@keyframes floatUp { from { opacity: 0; transform: translateY(26px); } to { opacity: 1; transform: none; } }

/* Chip dịch vụ ở hero nảy nhẹ khi rê chuột */
.hero-service { transition: transform .25s, background .25s, box-shadow .25s; }
.hero-service:hover { transform: translateY(-4px) scale(1.03); box-shadow: 0 10px 24px rgba(0, 0, 0, .18); }

/* Giá combo/gói đếm tăng dần thì cần chỗ cố định để không giật layout */
.plan-price, .combo-card-price strong { font-variant-numeric: tabular-nums; }

@media (prefers-reduced-motion: reduce) {
    .js-motion .reveal, .js-motion .reveal.is-visible { opacity: 1; transform: none; transition: none; }
    .hero, .hero-inner > * { animation: none; }
    .btn::after { display: none; }
    .service-card:hover, .plan:hover, .combo-card:hover, .hero-service:hover { transform: none; }
}

/* ============================================================
   Nền công nghệ toàn site — lưới mạch mờ + đốm sáng trôi chậm.
   Đặt cố định sau nội dung, không nhận chuột, rất nhẹ (chỉ CSS).
   ============================================================ */
.tech-bg {
    position: fixed; inset: 0; z-index: -1; pointer-events: none; overflow: hidden;
    background: var(--bg);
}
.tech-grid {
    position: absolute; inset: -10%;
    background-image:
        linear-gradient(rgba(20, 101, 192, .055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(20, 101, 192, .055) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: radial-gradient(ellipse at 50% 0%, #000 20%, transparent 75%);
    animation: techGrid 40s linear infinite;
}
@keyframes techGrid { to { transform: translateY(64px); } }

.tech-blob {
    position: absolute; border-radius: 50%; filter: blur(70px); opacity: .5;
}
.tech-blob-1 {
    width: 46vw; height: 46vw; max-width: 620px; max-height: 620px;
    top: -12vw; left: -8vw;
    background: radial-gradient(circle, rgba(0, 176, 255, .38), transparent 70%);
    animation: techDrift1 30s ease-in-out infinite;
}
.tech-blob-2 {
    width: 38vw; height: 38vw; max-width: 520px; max-height: 520px;
    top: 42%; right: -10vw;
    background: radial-gradient(circle, rgba(20, 101, 192, .32), transparent 70%);
    animation: techDrift2 36s ease-in-out infinite;
}
.tech-blob-3 {
    width: 32vw; height: 32vw; max-width: 440px; max-height: 440px;
    bottom: -10vw; left: 22%;
    background: radial-gradient(circle, rgba(56, 207, 255, .26), transparent 70%);
    animation: techDrift3 44s ease-in-out infinite;
}
@keyframes techDrift1 { 50% { transform: translate(8vw, 6vw) scale(1.12); } }
@keyframes techDrift2 { 50% { transform: translate(-7vw, -5vw) scale(1.08); } }
@keyframes techDrift3 { 50% { transform: translate(5vw, -7vw) scale(1.15); } }

/* Body vẫn giữ nền đục (không để trong suốt — trình duyệt sẽ lộ nền hệ thống);
   .tech-bg là phần tử con nên vẫn vẽ đè lên nền body dù z-index âm. */
.section-tint { backdrop-filter: blur(2px); }

@media (prefers-reduced-motion: reduce) {
    .tech-grid, .tech-blob { animation: none; }
}

/* ============================================================
   Icon SVG có chuyển động (partials/icons.php)
   ============================================================ */
.vicon { width: 100%; height: 100%; display: block; overflow: visible; }

/* Nét vẽ chạy khi icon lọt vào màn hình */
/* Mặc định vẽ đủ nét: icon nằm ngoài vùng có hiệu ứng (dock, footer, nút) phải
   hiện ngay. Chỉ ẩn nét khi thật sự sắp có animation vẽ. */
.vicon .ic-draw { stroke-dasharray: 260; stroke-dashoffset: 0; }
.js-motion .reveal .vicon .ic-draw, .vicon-live .ic-draw { stroke-dashoffset: 260; }
.is-visible .vicon .ic-draw,
.vicon-live .ic-draw { animation: icDraw 1.1s ease forwards; }
.is-visible .vicon .ic-d1, .vicon-live .ic-d1 { animation-delay: .25s; }
@keyframes icDraw { to { stroke-dashoffset: 0; } }

/* Dấu tick nảy lên sau khi khung vẽ xong */
.vicon .ic-tick { stroke-dasharray: 30; stroke-dashoffset: 0; }
.js-motion .reveal .vicon .ic-tick, .vicon-live .ic-tick { stroke-dashoffset: 30; }
.is-visible .vicon .ic-tick, .vicon-live .ic-tick { animation: icDraw .5s ease .7s forwards; }
.vicon .ic-pop { transform-origin: center; }
.js-motion .reveal .vicon .ic-pop, .vicon-live .ic-pop { transform: scale(0); }
.is-visible .vicon .ic-pop, .vicon-live .ic-pop { animation: icPop .5s cubic-bezier(.34, 1.56, .64, 1) .55s forwards; }
@keyframes icPop { to { transform: scale(1); } }

/* Sóng lan (wifi, tổng đài, hỗ trợ) */
.vicon .ic-wave { opacity: 1; }
.js-motion .reveal .vicon .ic-wave, .vicon-live .ic-wave { opacity: 0; }
.is-visible .vicon .ic-wave, .vicon-live .ic-wave { animation: icWave 2.4s ease-in-out infinite; }
.vicon .ic-w1 { animation-delay: .4s !important; }
.vicon .ic-w2 { animation-delay: .2s !important; }
.vicon .ic-w3 { animation-delay: 0s !important; }
@keyframes icWave {
    0%, 70%, 100% { opacity: 0; transform: scale(.9); }
    25%, 45% { opacity: 1; transform: scale(1); }
}

.vicon .ic-spin { transform-origin: 32px 32px; animation: icSpin 6s linear infinite; }
@keyframes icSpin { to { transform: rotate(360deg); } }

.vicon .ic-float { animation: icFloat 3.5s ease-in-out infinite; }
@keyframes icFloat { 50% { transform: translateY(-3px); } }

.vicon .ic-arrow { animation: icArrow 1.8s ease-in-out infinite; }
@keyframes icArrow { 50% { transform: translateY(-5px); } }

.vicon .ic-pulse { transform-origin: center; animation: icPulse 2.2s ease-in-out infinite; }
@keyframes icPulse { 50% { opacity: .45; transform: scale(1.08); } }

.vicon .ic-hand-m { transform-origin: 32px 32px; animation: icSpin 4s linear infinite; }
.vicon .ic-hand-h { transform-origin: 32px 32px; animation: icSpin 24s linear infinite; }

.vicon .ic-ring { transform-origin: 32px 32px; animation: icRing 2.6s ease-in-out infinite; }
@keyframes icRing {
    0%, 60%, 100% { transform: rotate(0); }
    10%, 30%, 50% { transform: rotate(-9deg); }
    20%, 40% { transform: rotate(9deg); }
}

/* Cột biểu đồ mọc lên */
.vicon .ic-bar { transform-origin: center bottom; }
.js-motion .reveal .vicon .ic-bar, .vicon-live .ic-bar { transform: scaleY(0); }
.is-visible .vicon .ic-bar, .vicon-live .ic-bar { animation: icBar .7s cubic-bezier(.34, 1.3, .64, 1) forwards; }
.vicon .ic-b2 { animation-delay: .12s !important; }
.vicon .ic-b3 { animation-delay: .24s !important; }
@keyframes icBar { to { transform: scaleY(1); } }

/* Nét ký chạy dài */
.vicon .ic-sign { stroke-dasharray: 180; stroke-dashoffset: 0; }
.js-motion .reveal .vicon .ic-sign, .vicon-live .ic-sign { stroke-dashoffset: 180; }
.is-visible .vicon .ic-sign, .vicon-live .ic-sign { animation: icDraw 1.8s ease forwards; }

@media (prefers-reduced-motion: reduce) {
    .vicon * { animation: none !important; stroke-dashoffset: 0 !important; opacity: 1 !important; transform: none !important; }
}

/* ============================================================
   Khối nội dung trang sản phẩm
   ============================================================ */
.section-tint { background: linear-gradient(180deg, rgba(20, 101, 192, .05), transparent); }

/* ---- Sân khấu minh họa đầu trang sản phẩm ---- */
.svc-stage {
    position: relative; isolation: isolate;
    border-radius: 24px; overflow: hidden; padding: 26px;
    display: grid; place-items: center; min-height: 340px;
    background: linear-gradient(150deg, #0B2E63 0%, #124B96 45%, #0E6FC2 100%);
    box-shadow: 0 24px 60px rgba(11, 46, 99, .28);
}

/* Lưới điểm công nghệ */
.svc-grid {
    position: absolute; inset: -20%;
    background-image: radial-gradient(rgba(255, 255, 255, .22) 1px, transparent 1px);
    background-size: 26px 26px;
    mask-image: radial-gradient(circle at 50% 45%, #000 35%, transparent 78%);
    animation: svcGridDrift 26s linear infinite;
}
@keyframes svcGridDrift { to { transform: translate(26px, 26px); } }

/* Hai vòng quỹ đạo xoay ngược chiều */
.svc-orbit {
    position: absolute; border-radius: 50%;
    border: 1px dashed rgba(255, 255, 255, .28);
}
.svc-orbit::after {
    content: ""; position: absolute; top: -5px; left: 50%;
    width: 10px; height: 10px; border-radius: 50%;
    background: #7FE3FF; box-shadow: 0 0 14px 4px rgba(127, 227, 255, .8);
    transform: translateX(-50%);
}
.svc-orbit-1 { width: 300px; height: 300px; animation: svcSpin 22s linear infinite; }
.svc-orbit-2 { width: 220px; height: 220px; border-style: solid; border-color: rgba(255, 255, 255, .16); animation: svcSpin 16s linear infinite reverse; }
@keyframes svcSpin { to { transform: rotate(360deg); } }

/* Vệt sáng quét chậm */
.svc-glow {
    position: absolute; inset: -40%;
    background: conic-gradient(from 0deg, transparent 0deg, rgba(127, 227, 255, .22) 40deg, transparent 90deg);
    animation: svcSpin 14s linear infinite;
    mix-blend-mode: screen;
}

/* Khung kính chứa ảnh hoặc icon */
.svc-figure {
    position: relative; z-index: 2; width: min(78%, 320px); aspect-ratio: 1;
    border-radius: 22px; display: grid; place-items: center; overflow: hidden;
    background: rgba(255, 255, 255, .92);
    border: 1px solid rgba(255, 255, 255, .6);
    box-shadow: 0 18px 40px rgba(4, 24, 56, .35);
    backdrop-filter: blur(6px);
    animation: svcBreathe 7s ease-in-out infinite;
}
@keyframes svcBreathe { 50% { transform: translateY(-8px); } }
.svc-figure img, .svc-figure > svg { width: 100%; height: 100%; object-fit: cover; display: block; }

.svc-hero-icon { width: 100%; height: 100%; display: grid; place-items: center; padding: 16%; color: var(--blue-600); }
.svc-hero-icon .vicon { stroke-width: 2.4; }

/* Chip thông tin nổi quanh khung, lấy từ điểm nổi bật của sản phẩm */
.svc-chip {
    position: absolute; z-index: 3; display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 14px; border-radius: 999px; font-size: 12.5px; font-weight: 600;
    color: #0B2E63; background: rgba(255, 255, 255, .95);
    box-shadow: 0 10px 24px rgba(4, 24, 56, .28);
    max-width: 62%; animation: svcFloat 6s ease-in-out infinite;
}
.svc-chip i {
    width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
    background: linear-gradient(135deg, var(--blue-600), var(--cyan, #00B0FF));
    box-shadow: 0 0 0 3px rgba(0, 176, 255, .18);
}
.svc-chip-1 { top: 12%; left: 4%; animation-delay: 0s; }
.svc-chip-2 { bottom: 16%; right: 4%; animation-delay: 1.2s; }
.svc-chip-3 { bottom: 6%; left: 8%; animation-delay: 2.4s; }
@keyframes svcFloat { 50% { transform: translateY(-9px); } }

@media (max-width: 860px) {
    .svc-stage { min-height: 280px; }
    .svc-chip { font-size: 11.5px; max-width: 70%; }
    .svc-orbit-1 { width: 230px; height: 230px; }
    .svc-orbit-2 { width: 170px; height: 170px; }
}
@media (prefers-reduced-motion: reduce) {
    .svc-grid, .svc-orbit, .svc-glow, .svc-figure, .svc-chip { animation: none; }
}
.plan-price-contact { font-size: 24px; }
.feat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
.feat-card {
    background: var(--surface); border: 1px solid var(--border); border-radius: 18px;
    padding: 24px 22px; box-shadow: var(--shadow);
    transition: transform .28s cubic-bezier(.22, .61, .36, 1), box-shadow .28s, border-color .28s;
}
.feat-card:hover { transform: translateY(-6px); border-color: var(--blue-500); box-shadow: var(--shadow-lg); }
.feat-icon {
    width: 56px; height: 56px; color: var(--blue-600); margin-bottom: 14px;
    background: linear-gradient(135deg, rgba(20, 101, 192, .12), rgba(0, 176, 255, .16));
    border-radius: 16px; padding: 10px;
}
.feat-card:hover .feat-icon { color: var(--cyan, #00B0FF); }
.feat-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.feat-card p { color: var(--muted); font-size: 14px; }

/* Quy trình các bước: thẻ nổi, số lớn mờ phía sau, đường nối giữa các bước */
.steps {
    list-style: none; counter-reset: step;
    display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 22px;
    position: relative;
}
.step {
    counter-increment: step; position: relative; isolation: isolate;
    padding: 30px 24px 26px; border-radius: 20px;
    background: linear-gradient(180deg, var(--surface), #F7FBFF);
    border: 1px solid var(--border); box-shadow: var(--shadow);
    transition: transform .3s cubic-bezier(.22, .61, .36, 1), box-shadow .3s, border-color .3s;
    overflow: hidden;
}
/* Số lớn chìm làm nền */
.step::before {
    content: counter(step, decimal-leading-zero);
    position: absolute; right: 12px; top: -14px; z-index: -1;
    font-size: 92px; font-weight: 900; line-height: 1;
    color: rgba(20, 101, 192, .07);
}
/* Đường nối sang bước kế tiếp */
.step::after {
    content: ""; position: absolute; top: 48px; right: -22px; width: 22px; height: 2px;
    background: repeating-linear-gradient(90deg, var(--blue-500) 0 6px, transparent 6px 12px);
}
.step:last-child::after { display: none; }
.step:hover { transform: translateY(-6px); border-color: var(--blue-500); box-shadow: var(--shadow-lg); }

.step-num {
    display: grid; place-items: center; width: 46px; height: 46px; border-radius: 15px;
    margin-bottom: 14px; color: #fff; font-weight: 800; font-size: 17px;
    background: linear-gradient(135deg, var(--blue-700), var(--accent));
    box-shadow: 0 10px 22px rgba(20, 101, 192, .34);
    position: relative;
}
.step-num::before { content: counter(step); }
/* Vòng sáng lan ra từ số bước */
.step-num::after {
    content: ""; position: absolute; inset: 0; border-radius: inherit;
    border: 2px solid var(--accent); opacity: 0;
    animation: stepPing 3s ease-out infinite;
}
@keyframes stepPing {
    0% { transform: scale(1); opacity: .55; }
    70%, 100% { transform: scale(1.6); opacity: 0; }
}
.step:nth-child(2) .step-num::after { animation-delay: .5s; }
.step:nth-child(3) .step-num::after { animation-delay: 1s; }
.step:nth-child(4) .step-num::after { animation-delay: 1.5s; }

.step h3 { font-size: 16.5px; font-weight: 700; margin-bottom: 6px; }
.step p { color: var(--muted); font-size: 14px; }

@media (max-width: 900px) { .step::after { display: none; } }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 18px; }
.stat { text-align: center; padding: 22px 14px; border-radius: 18px; background: var(--surface); border: 1px solid var(--border); }
.stat b {
    display: block; font-size: 34px; font-weight: 900; line-height: 1.1;
    background: linear-gradient(135deg, var(--blue-600), var(--cyan, #00B0FF));
    -webkit-background-clip: text; background-clip: text; color: transparent;
    font-variant-numeric: tabular-nums;
}
.stat span { color: var(--muted); font-size: 14px; }

.acc { display: grid; gap: 10px; max-width: 860px; margin: 0 auto; }
.acc-item { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; overflow: hidden; }
.acc-item summary {
    cursor: pointer; padding: 16px 20px; font-weight: 600; list-style: none;
    display: flex; justify-content: space-between; gap: 12px; align-items: center;
}
.acc-item summary::-webkit-details-marker { display: none; }
.acc-item summary::after { content: "+"; font-size: 22px; color: var(--blue-600); transition: transform .25s; }
.acc-item[open] summary::after { transform: rotate(45deg); }
.acc-item .acc-body { padding: 0 20px 18px; color: var(--muted); }
.acc-item[open] .acc-body { animation: accOpen .35s ease; }
@keyframes accOpen { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }

/* Danh sách đối tượng / lợi ích: mỗi mục là một thẻ có dấu tick nổi */
.checklist { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 16px; }
.checklist li {
    list-style: none; position: relative; padding: 20px 20px 20px 58px;
    background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
    box-shadow: var(--shadow);
    transition: transform .28s cubic-bezier(.22, .61, .36, 1), box-shadow .28s, border-color .28s;
}
.checklist li:hover { transform: translateY(-4px); border-color: var(--blue-500); box-shadow: var(--shadow-lg); }
.check-mark {
    position: absolute; left: 18px; top: 20px;
    width: 26px; height: 26px; border-radius: 9px; display: grid; place-items: center;
    background: linear-gradient(135deg, var(--blue-700), var(--accent));
    box-shadow: 0 6px 14px rgba(20, 101, 192, .3);
}
.check-mark::before {
    content: ""; width: 11px; height: 6px; margin-top: -3px;
    border-left: 2.5px solid #fff; border-bottom: 2.5px solid #fff;
    transform: rotate(-45deg);
}
.checklist li b { display: block; font-size: 15.5px; margin-bottom: 4px; }
.checklist li span { color: var(--muted); font-size: 14px; }

/* Icon nhỏ thay emoji ở footer, liên hệ, meta bài viết */
.fic {
    display: inline-grid; place-items: center; width: 18px; height: 18px;
    vertical-align: -3px; color: currentColor; flex-shrink: 0;
}
.fic svg { width: 100%; height: 100%; stroke-width: 4; }
.fic-sm { width: 14px; height: 14px; vertical-align: -2px; }
.footer-contact li { display: flex; align-items: flex-start; gap: 10px; }
.contact-list li { display: flex; align-items: flex-start; gap: 10px; }
.support-chip .c svg, .hotline-icon svg { width: 100%; height: 100%; stroke-width: 4; }

/* ---- Trang dịch vụ (module Service) ---- */
.crumbs { font-size: 13px; color: var(--muted); }
.crumbs a { color: var(--blue-600); }
.svc-highlights { list-style: none; margin: 16px 0 0; display: grid; gap: 8px; }
.svc-highlights li { position: relative; padding-left: 26px; }
.svc-highlights li::before {
    content: "✓"; position: absolute; left: 0; top: 0;
    width: 18px; height: 18px; border-radius: 50%;
    background: var(--blue-600); color: #fff; font-size: 11px;
    display: grid; place-items: center;
}
.svc-figure { border-radius: 20px; overflow: hidden; box-shadow: var(--shadow); background: var(--surface); }
.svc-figure img, .svc-figure svg { width: 100%; height: 100%; display: block; object-fit: cover; }
.plans-wide { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.plan-old { color: var(--muted); font-size: 14px; margin-top: -6px; }
.plan-note { color: var(--muted); font-size: 12px; margin: 8px 0 10px; }

/* ---- Combo & khuyến mãi (module Promotion) ---- */
.combo-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.combo-card {
    position: relative; background: var(--surface); border: 1px solid var(--border);
    border-radius: 18px; padding: 22px; box-shadow: var(--shadow);
}
.combo-card h3 { font-size: 18px; font-weight: 800; }
.combo-card-sub { color: var(--muted); font-size: 14px; margin-top: 4px; }
.combo-card-items { display: flex; flex-wrap: wrap; gap: 12px; margin: 14px 0; }
.combo-card-item { display: flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; }
.combo-card-item small { color: var(--muted); font-weight: 400; }
.combo-card-item .box {
    width: 34px; height: 34px; border-radius: 10px; flex-shrink: 0;
    background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
    display: grid; place-items: center;
}
.combo-card-item .box svg { width: 20px; height: 20px; }
.combo-card-price { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.combo-card-price s { color: var(--muted); font-size: 14px; }
.combo-card-price strong { font-size: 28px; color: var(--blue-600); font-weight: 900; }
.combo-card-off { background: #E11D48; color: #fff; border-radius: 999px; padding: 1px 8px; font-size: 12px; font-weight: 700; }

.promo-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.promo-card {
    display: block; background: var(--surface); border: 1px solid var(--border);
    border-radius: 18px; overflow: hidden; box-shadow: var(--shadow); transition: transform .15s, box-shadow .15s;
}
.promo-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.promo-thumb { position: relative; aspect-ratio: 16 / 9; background: var(--bg-soft, #EAF2FB); }
.promo-thumb img, .promo-thumb svg { width: 100%; height: 100%; object-fit: cover; display: block; }
.promo-tag {
    position: absolute; left: 12px; top: 12px; background: #E11D48; color: #fff;
    border-radius: 999px; padding: 3px 12px; font-size: 12px; font-weight: 700;
}
.promo-tag.static { position: static; display: inline-block; }
.promo-body { padding: 16px 18px 18px; }
.promo-body h3 { font-size: 16px; font-weight: 700; }
.promo-body p { color: var(--muted); font-size: 14px; margin-top: 6px; }
.promo-foot, .promo-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 12px; }
.promo-chip { background: rgba(20, 101, 192, .1); color: var(--blue-600); border-radius: 999px; padding: 2px 10px; font-size: 12px; }
.promo-days { color: #E11D48; font-size: 12px; font-weight: 700; }
.promo-code { font-size: 13px; }

/* Honeypot chống bot: khuất khỏi mắt người lẫn trình đọc màn hình, bot vẫn điền */
.lead-hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.lead-form button[disabled] { opacity: .6; cursor: progress; }

/* ============================================================
   Thanh liên hệ nhanh (partials/contact-dock.php)
   Desktop: cột dọc nổi bên phải · Mobile: thanh app dưới đáy.
   Hiệu ứng 3D: nền kính, viền sáng, đổ bóng nhiều lớp, nhấn lún xuống.
   ============================================================ */
.dock {
    position: fixed; z-index: 60; right: 18px; top: 50%; transform: translateY(-50%);
    display: flex; flex-direction: column; gap: 12px;
}
.dock-item {
    position: relative; width: 52px; height: 52px; border-radius: 17px;
    display: grid; place-items: center; padding: 13px; color: #fff;
    background: linear-gradient(150deg, var(--blue-600), var(--blue-800));
    border: 1px solid rgba(255, 255, 255, .28);
    box-shadow:
        0 10px 22px rgba(8, 38, 88, .32),
        0 2px 0 rgba(255, 255, 255, .38) inset,
        0 -6px 14px rgba(4, 24, 56, .28) inset;
    transition: transform .25s cubic-bezier(.22, .61, .36, 1), box-shadow .25s, filter .25s;
}
/* Ánh sáng chếch trên đầu nút cho cảm giác khối */
.dock-item::before {
    content: ""; position: absolute; inset: 1px 1px auto; height: 45%;
    border-radius: 16px 16px 40% 40%;
    background: linear-gradient(180deg, rgba(255, 255, 255, .34), transparent);
    pointer-events: none;
}
.dock-item:hover { transform: translateY(-4px) scale(1.05); filter: brightness(1.08); }
.dock-item:active { transform: translateY(1px) scale(.98); box-shadow: 0 4px 10px rgba(8, 38, 88, .3); }
.dock-ico { width: 100%; height: 100%; display: grid; place-items: center; }
.dock-ico svg { width: 100%; height: 100%; stroke-width: 4; }
.dock-text { display: none; }

/* Nhãn bung ra khi rê chuột (desktop) */
.dock-item::after {
    content: attr(data-label);
    position: absolute; right: calc(100% + 12px); top: 50%; transform: translateY(-50%) translateX(8px);
    white-space: nowrap; padding: 8px 14px; border-radius: 12px;
    background: rgba(10, 42, 102, .96); color: #fff; font-size: 13px; font-weight: 600;
    box-shadow: 0 8px 20px rgba(8, 38, 88, .3);
    opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s;
}
.dock-item:hover::after { opacity: 1; transform: translateY(-50%) translateX(0); }

/* Màu riêng từng kênh */
.dock-zalo { background: linear-gradient(150deg, #0F8BFF, #0068D6); }
.dock-mess { background: linear-gradient(150deg, #A334FA, #0078FF); }
.dock-call { background: linear-gradient(150deg, #17BF63, #0E8C48); }
.dock-form { background: linear-gradient(150deg, #FF8A00, #E25A00); }

/* Vòng sóng lan quanh nút gọi để hút mắt */
.dock-pulse {
    position: absolute; inset: 0; border-radius: inherit;
    border: 2px solid rgba(23, 191, 99, .7);
    animation: dockPulse 2.4s ease-out infinite;
}
@keyframes dockPulse {
    0% { transform: scale(1); opacity: .8; }
    70%, 100% { transform: scale(1.75); opacity: 0; }
}

/* ---- Thanh điều hướng dưới đáy kiểu app ----
   Dùng cho mọi màn dưới 1340px: container rộng 1200px + cột dock 52px cần
   khoảng 1340px mới không đè lên nội dung (thẻ và nút mũi tên của slider). */
@media (max-width: 1339px) {
    .dock {
        right: 0; left: 0; top: auto; bottom: 0; transform: none;
        flex-direction: row; justify-content: space-around; align-items: flex-end; gap: 0;
        padding: 8px 10px calc(8px + env(safe-area-inset-bottom, 0px));
        background: rgba(255, 255, 255, .88);
        backdrop-filter: blur(16px) saturate(150%);
        border-top: 1px solid rgba(20, 101, 192, .14);
        box-shadow: 0 -8px 26px rgba(8, 38, 88, .12);
    }
    .dock-item {
        width: auto; flex: 1; height: auto; padding: 6px 2px; border-radius: 14px;
        background: none; border: none; box-shadow: none; color: var(--muted);
        display: flex; flex-direction: column; align-items: center; gap: 3px;
    }
    .dock-item::before, .dock-item::after { display: none; }
    .dock-ico {
        width: 26px; height: 26px; color: var(--blue-600);
        transition: transform .25s, color .25s;
    }
    .dock-text { display: block; font-size: 10.5px; font-weight: 600; letter-spacing: .2px; }
    .dock-item:hover, .dock-item:active { transform: none; filter: none; }
    .dock-item:active .dock-ico { transform: scale(.9); }

    /* Nút gọi nổi lên giữa thanh — điểm nhấn chính */
    .dock-call {
        flex: 0 0 66px; margin-top: -26px;
    }
    .dock-call .dock-ico {
        width: 54px; height: 54px; padding: 14px; border-radius: 50%; color: #fff;
        background: linear-gradient(150deg, #17BF63, #0E8C48);
        border: 3px solid #fff;
        box-shadow: 0 10px 22px rgba(14, 140, 72, .45), 0 2px 0 rgba(255, 255, 255, .4) inset;
    }
    .dock-call .dock-text { color: #0E8C48; }
    .dock-pulse { inset: auto; top: 0; left: 50%; width: 54px; height: 54px; margin-left: -27px; border-radius: 50%; }

    /* Chừa chỗ cho thanh dock, tránh che nội dung và footer */
    body { padding-bottom: 76px; }
}

@media (prefers-reduced-motion: reduce) {
    .dock-item, .dock-pulse { transition: none; animation: none; }
}

/* ============================================================
   Slider cho lưới nhiều hơn 4 thẻ (site.js tự bọc)
   Hiển thị 4 thẻ, cuộn ngang bằng mũi tên hoặc vuốt.
   ============================================================ */
.carousel { position: relative; }
.carousel-track {
    display: flex !important;
    grid-template-columns: none !important;
    gap: 20px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-padding-left: 2px;
    /* Chừa trên 26px: đặt overflow-x thì trình duyệt tính overflow-y thành auto,
       nhãn "PHỔ BIẾN" (top: -12px) và thẻ nổi (translateY(-8px)) sẽ bị cắt. */
    padding: 26px 2px 14px;
    scrollbar-width: none;
}
.carousel-track::-webkit-scrollbar { display: none; }
.carousel-track > * {
    flex: 0 0 calc((100% - 60px) / 4);
    scroll-snap-align: start;
    min-width: 0;
}
/* Thẻ giá cao bằng nhau cho gọn hàng */
.carousel-track.plans > * { display: flex; flex-direction: column; }
.carousel-track.plans .plan-feats { flex: 1; }

.carousel-btn {
    position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
    width: 44px; height: 44px; border-radius: 50%; cursor: pointer;
    display: grid; place-items: center;
    font-size: 26px; line-height: 1; padding-bottom: 4px;
    color: var(--blue-700); background: #fff;
    border: 1px solid var(--border);
    box-shadow: 0 10px 24px rgba(13, 61, 143, .18), 0 1px 0 rgba(255, 255, 255, .9) inset;
    transition: transform .2s, box-shadow .2s, opacity .2s, color .2s;
}
.carousel-btn:hover:not(:disabled) {
    transform: translateY(-50%) scale(1.08);
    color: #fff; background: linear-gradient(150deg, var(--blue-600), var(--blue-800));
    box-shadow: 0 14px 30px rgba(13, 61, 143, .3);
}
.carousel-btn:active:not(:disabled) { transform: translateY(-50%) scale(.96); }
.carousel-btn:disabled { opacity: .3; cursor: default; }
.carousel-prev { left: -20px; }
.carousel-next { right: -20px; }

@media (max-width: 1100px) {
    .carousel-track > * { flex-basis: calc((100% - 40px) / 3); }
    .carousel-prev { left: -6px; }
    .carousel-next { right: -6px; }
}
@media (max-width: 860px) {
    .carousel-track > * { flex-basis: calc((100% - 20px) / 2); }
}
@media (max-width: 620px) {
    .carousel-track > * { flex-basis: 84%; }
    .carousel-btn { display: none; }
}

/* ---- Tin tức trang chủ: 3 thẻ dọc, nằm dưới Khách hàng tiêu biểu ---- */
.news-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.news-card {
    display: block; background: var(--surface); border: 1px solid var(--border);
    border-radius: 18px; overflow: hidden; box-shadow: var(--shadow);
    transition: transform .28s cubic-bezier(.22, .61, .36, 1), box-shadow .28s, border-color .28s;
}
.news-card:hover { transform: translateY(-6px); border-color: var(--blue-500); box-shadow: var(--shadow-lg); }
.news-card-thumb { position: relative; aspect-ratio: 16 / 9; background: #EAF2FB; overflow: hidden; }
.news-card-thumb img, .news-card-thumb svg { width: 100%; height: 100%; object-fit: cover; display: block; }
.news-card-thumb .news-chip {
    position: absolute; left: 12px; top: 12px;
    background: rgba(20, 101, 192, .95); color: #fff;
    border-radius: 999px; padding: 3px 12px; font-size: 11.5px; font-weight: 600;
}
.news-card:hover .news-card-thumb img { transform: scale(1.05); }
.news-card-thumb img { transition: transform .4s cubic-bezier(.22, .61, .36, 1); }
.news-card-body { padding: 16px 18px 18px; }
.news-card-body .news-date { color: var(--muted); font-size: 12.5px; }
.news-card-title {
    font-size: 16px; font-weight: 700; margin: 6px 0 8px; line-height: 1.4;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-card:hover .news-card-title { color: var(--blue-600); }
.news-card-excerpt {
    color: var(--muted); font-size: 14px; margin-bottom: 10px;
    display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
@media (max-width: 900px) { .news-cards { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .news-cards { grid-template-columns: 1fr; } }

/* Neo #dang-ky chừa chỗ cho header dính khi nhảy bằng link thường (không JS) */
#dang-ky { scroll-margin-top: 88px; }

/* ============================================================
   Tinh chỉnh riêng cho điện thoại (≤620px)
   ============================================================ */
@media (max-width: 620px) {
    /* --- Header: logo gọn một dòng, hamburger sát mép phải, ẩn hotline --- */
    .brand { gap: 8px; flex-shrink: 0; }
    .brand-logo-img { width: 32px; height: 32px; }
    .brand-name { font-size: 16px; line-height: 1; }
    .brand-sub { font-size: 8px; letter-spacing: .7px; white-space: nowrap; }
    /* Số điện thoại đã có sẵn ở thanh app dưới đáy nên bỏ khỏi header cho thoáng */
    .header-hotline { display: none; }
    .nav-toggle { margin-left: auto; margin-right: 0; }

    /* --- Chip dịch vụ ở hero: 5 ô lớn chiếm gần hết màn hình, thu thành 1 hàng cuộn --- */
    /* Cha là grid nên phải ép min-width: 0, không thì flex nowrap tự nở rộng
       theo nội dung và overflow-x không bao giờ cuộn được. */
    .hero-inner > div { min-width: 0; }
    .hero-services {
        display: flex; flex-wrap: nowrap; gap: 8px; margin: 18px 0 22px;
        width: 100%; max-width: 100%; min-width: 0;
        overflow-x: auto; scroll-snap-type: x proximity;
        padding-bottom: 6px; scrollbar-width: none;
    }
    .hero-services::-webkit-scrollbar { display: none; }
    .hero-service {
        flex: 0 0 auto; max-width: none; scroll-snap-align: start;
        display: flex; align-items: center; gap: 8px;
        padding: 9px 14px 9px 10px; border-radius: 999px;
        font-size: 12px; white-space: nowrap;
    }
    .hero-service .ico { width: 18px; height: 18px; margin: 0; }

    /* --- Combo: 3 dịch vụ luôn nằm cùng một hàng, nhãn được xuống dòng --- */
    .combo { padding: 24px 16px; gap: 16px; }
    .combo-title { font-size: 19px; }
    .combo-save { flex-wrap: wrap; justify-content: center; gap: 6px 10px; }
    .combo-save b { font-size: 34px; }
    .combo-save span { max-width: none; font-size: 12px; }
    .combo-items { flex-wrap: nowrap; gap: 4px; justify-content: center; }
    .combo-item { flex: 1 1 0; min-width: 0; }
    .combo-item .box { width: 100%; max-width: 72px; height: 54px; margin: 0 auto; }
    .combo-item .box svg { width: 26px; height: 26px; }
    .combo-item small {
        font-size: 9px; letter-spacing: .2px; margin-top: 5px;
        white-space: normal; word-break: break-word;   /* nhãn dài tự xuống dòng */
    }
    .combo-plus { font-size: 17px; flex: 0 0 auto; }

    /* --- Slider: mỗi lượt hiện trọn 1 thẻ vừa khung, không lòi thẻ kế bên --- */
    .carousel-btn { display: grid; width: 36px; height: 36px; font-size: 21px; }
    .carousel-prev { left: 6px; }
    .carousel-next { right: 6px; }
    .carousel-track { padding-inline: 2px; gap: 16px; }
    /* Chiếm trọn bề ngang track nên thẻ kế tiếp lùi ra sau đúng một khoảng gap → khuất hẳn */
    .carousel-track > * { flex-basis: 100%; }
}