/* quantri360.com — site công khai (site:3600). Token màu một nơi; nhận diện xanh lá landing cũ. */
:root {
    --c-ink: #0f1f1a;
    --c-text: #33413c;
    --c-muted: #6b7a74;
    --c-line: #e3ebe7;
    --c-bg: #ffffff;
    --c-soft: #f4f8f6;
    --c-brand: #059669;
    --c-brand-2: #0d9488;
    --c-brand-ink: #065f46;
    --c-accent: #34d399;
    --c-hero-from: #0b3d2e;
    --c-hero-to: #0f766e;
    --radius: 14px;
    --wrap: 1200px;
    --shadow: 0 10px 30px rgba(6, 95, 70, .10);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--c-bg); color: var(--c-text); font-family: var(--font-sans); font-size: var(--fs-md, 15px); line-height: 1.65; }
img { max-width: 100%; height: auto; }
a { color: var(--c-brand); }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 16px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 8px; background: #fff; padding: 6px 10px; z-index: 100; }

/* ---------- header ---------- */
.hd { position: sticky; top: 0; z-index: 50; background: rgba(255, 255, 255, .94); backdrop-filter: blur(8px); border-bottom: 1px solid var(--c-line); }
.hd .wrap { display: flex; align-items: center; gap: 24px; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--c-ink); font-weight: 800; font-size: 18px; }
.logo img { width: 36px; height: 36px; }
.nav { display: flex; gap: 4px; margin-left: auto; }
.nav a { padding: 8px 12px; border-radius: 8px; text-decoration: none; color: var(--c-text); font-weight: 500; }
.nav a:hover, .nav a.on { color: var(--c-brand-ink); background: var(--c-soft); }
.hd-cta { display: flex; gap: 8px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 10px 18px; border-radius: 10px; font-weight: 600; text-decoration: none; border: 1px solid transparent; cursor: pointer; font-size: inherit; font-family: inherit; }
.btn-primary { background: linear-gradient(135deg, var(--c-brand), var(--c-brand-2)); color: #fff; }
.btn-primary:hover { filter: brightness(1.06); }
.btn-ghost { border-color: var(--c-line); color: var(--c-ink); background: #fff; }
.btn-ghost:hover { border-color: var(--c-brand); color: var(--c-brand-ink); }
.btn-light { background: #fff; color: var(--c-brand-ink); }
.btn-outline-light { border-color: rgba(255, 255, 255, .5); color: #fff; }
.menu-btn { display: none; margin-left: auto; background: none; border: 1px solid var(--c-line); border-radius: 8px; padding: 8px 10px; font-size: 18px; line-height: 1; cursor: pointer; }

/* ---------- hero + section ---------- */
.hero { background: linear-gradient(135deg, var(--c-hero-from), var(--c-hero-to)); color: #fff; padding: 72px 0 64px; overflow: hidden; }
.hero .wrap { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; align-items: center; }
.badge { display: inline-block; padding: 6px 12px; border-radius: 999px; background: rgba(255, 255, 255, .12); border: 1px solid rgba(255, 255, 255, .2); font-size: 13px; font-weight: 600; }
.hero h1 { font-size: clamp(34px, 5vw, 56px); line-height: 1.12; margin: 18px 0 14px; color: #fff; letter-spacing: -.02em; }
.hero h1 em { font-style: normal; color: var(--c-accent); }
.hero p.lead { font-size: 18px; color: rgba(255, 255, 255, .85); margin: 0 0 26px; }
.hero .actions { display: flex; gap: 12px; flex-wrap: wrap; }
.pills { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 22px; }
.pills span { font-size: 13px; padding: 5px 12px; border-radius: 999px; background: rgba(255, 255, 255, .1); }
.quote { margin-top: 22px; font-size: 14px; font-style: italic; color: rgba(255, 255, 255, .7); white-space: pre-line; }
.shots { display: flex; gap: 14px; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 6px; }
.shots img { flex: 0 0 100%; scroll-snap-align: center; border-radius: var(--radius); box-shadow: 0 20px 50px rgba(0, 0, 0, .3); background: #fff; }
.dots { display: flex; gap: 6px; justify-content: center; margin-top: 10px; }
.dots button { width: 8px; height: 8px; border-radius: 50%; border: 0; background: rgba(255, 255, 255, .35); cursor: pointer; padding: 0; }
.dots button.on { background: #fff; width: 22px; border-radius: 4px; }

.sec { padding: 72px 0; }
.sec.soft { background: var(--c-soft); }
.sec-hd { max-width: 720px; margin: 0 auto 40px; text-align: center; }
.sec-hd .eyebrow { color: var(--c-brand); font-weight: 700; font-size: 13px; text-transform: uppercase; letter-spacing: .08em; }
.sec-hd h2 { font-size: clamp(26px, 3.4vw, 36px); line-height: 1.25; margin: 8px 0 10px; color: var(--c-ink); }
.sec-hd p { margin: 0; color: var(--c-muted); }
.grid { display: grid; gap: 20px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.card { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 22px; }
.card h3 { margin: 0 0 6px; font-size: 17px; color: var(--c-ink); }
.card p { margin: 0; color: var(--c-muted); }
.card .tag { display: inline-block; font-size: 12px; font-weight: 700; color: var(--c-brand); margin-bottom: 6px; }
.card img { border-radius: 10px; margin-bottom: 14px; border: 1px solid var(--c-line); }
.card ul { margin: 10px 0 0; padding-left: 18px; color: var(--c-text); }
.stats { display: flex; justify-content: center; gap: 56px; flex-wrap: wrap; margin-top: 36px; }
.stats b { display: block; font-size: 40px; color: var(--c-brand-ink); line-height: 1.1; }
.stats span { color: var(--c-muted); font-size: 14px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; margin-bottom: 48px; }
.split:nth-child(even) .split-img { order: 2; }
.split img { border-radius: var(--radius); box-shadow: var(--shadow); }
.split h3 { font-size: 22px; color: var(--c-ink); margin: 0 0 8px; }
.cta-band { background: linear-gradient(135deg, var(--c-hero-from), var(--c-hero-to)); color: #fff; border-radius: 20px; padding: 48px 32px; text-align: center; }
.cta-band h2 { color: #fff; margin: 6px 0 10px; font-size: clamp(24px, 3vw, 34px); white-space: pre-line; }
.cta-band p { color: rgba(255, 255, 255, .85); margin: 0 0 22px; }
.cta-band .actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ---------- bài viết ---------- */
.page-hd { background: var(--c-soft); border-bottom: 1px solid var(--c-line); padding: 44px 0 32px; }
.page-hd h1 { margin: 6px 0 8px; font-size: clamp(28px, 4vw, 40px); line-height: 1.2; color: var(--c-ink); }
.page-hd p { margin: 0; color: var(--c-muted); max-width: 760px; }
.crumb { font-size: 13px; color: var(--c-muted); }
.crumb a { color: var(--c-muted); text-decoration: none; }
.prose { max-width: 780px; margin: 0 auto; padding: 36px 16px 64px; }
.prose h2 { font-size: 24px; color: var(--c-ink); margin: 36px 0 10px; scroll-margin-top: 80px; }
.prose h3 { font-size: 19px; color: var(--c-ink); margin: 26px 0 8px; scroll-margin-top: 80px; }
.prose img { border-radius: 10px; border: 1px solid var(--c-line); }
.prose table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 14px; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--c-line); padding: 8px 10px; text-align: left; vertical-align: top; }
.prose th { background: var(--c-soft); color: var(--c-ink); }
.prose blockquote { margin: 16px 0; padding: 12px 16px; border-left: 4px solid var(--c-brand); background: var(--c-soft); border-radius: 0 10px 10px 0; }
.prose blockquote p { margin: 0; }
.prose code { background: var(--c-soft); padding: 1px 6px; border-radius: 6px; font-family: var(--font-mono); font-size: .9em; }
.prose pre { background: #0f1f1a; color: #e6f2ed; padding: 14px; border-radius: 10px; overflow-x: auto; }
.prose pre code { background: none; padding: 0; color: inherit; }
.prose .cover { margin: 0 0 24px; }
.meta-line { font-size: 13px; color: var(--c-muted); margin-top: 8px; }

.docs { display: grid; grid-template-columns: 250px minmax(0, 1fr) 210px; gap: 32px; padding: 28px 16px 64px; max-width: 1280px; margin: 0 auto; }
.docs .prose { padding: 0; max-width: none; margin: 0; }
.docs-nav, .docs-toc { position: sticky; top: 84px; align-self: start; max-height: calc(100vh - 100px); overflow-y: auto; font-size: 14px; }
.docs-nav ul, .docs-toc ul { list-style: none; margin: 0; padding: 0; }
.docs-nav ul ul { padding-left: 12px; border-left: 1px solid var(--c-line); margin-left: 6px; }
.docs-nav a, .docs-toc a { display: block; padding: 5px 8px; border-radius: 6px; text-decoration: none; color: var(--c-text); }
.docs-nav a:hover, .docs-toc a:hover { background: var(--c-soft); }
.docs-nav a.on { background: var(--c-soft); color: var(--c-brand-ink); font-weight: 600; }
.docs-nav .grp, .docs-toc .grp { font-size: 12px; font-weight: 700; text-transform: uppercase; color: var(--c-muted); margin: 0 0 8px; letter-spacing: .06em; }
.docs-toc .l3 a { padding-left: 18px; font-size: 13px; }
.pager { display: flex; justify-content: space-between; gap: 12px; margin-top: 40px; border-top: 1px solid var(--c-line); padding-top: 18px; }
.pager a { text-decoration: none; padding: 12px 14px; border: 1px solid var(--c-line); border-radius: 10px; color: var(--c-ink); max-width: 48%; }
.pager a small { display: block; color: var(--c-muted); }
.pager a.next { margin-left: auto; text-align: right; }

.posts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.post { border: 1px solid var(--c-line); border-radius: var(--radius); overflow: hidden; text-decoration: none; color: inherit; background: #fff; display: flex; flex-direction: column; }
.post:hover { box-shadow: var(--shadow); }
.post .thumb { aspect-ratio: 16 / 9; background: var(--c-soft); object-fit: cover; width: 100%; }
.post .body { padding: 16px 18px 20px; }
.post h3 { margin: 0 0 6px; font-size: 17px; color: var(--c-ink); line-height: 1.35; }
.post p { margin: 0; color: var(--c-muted); font-size: 14px; }
.empty { text-align: center; color: var(--c-muted); padding: 48px 0; }
.pg { display: flex; gap: 8px; justify-content: center; margin-top: 32px; }

/* ---------- bảng giá rút gọn (shortcode) ---------- */
.price-mini th:first-child { width: 34%; }

/* ---------- footer ---------- */
.ft { background: #0b1f19; color: rgba(255, 255, 255, .75); padding: 48px 0 24px; margin-top: 0; font-size: 14px; }
.ft .cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 28px; }
.ft h4 { color: #fff; font-size: 13px; text-transform: uppercase; letter-spacing: .08em; margin: 0 0 12px; }
.ft a { color: rgba(255, 255, 255, .75); text-decoration: none; display: block; padding: 3px 0; }
.ft a:hover { color: #fff; }
.ft a.inl { display: inline; }
.ft .org b { color: #fff; }
.ft .org img { width: 56px; height: 56px; border-radius: 50%; background: #fff; margin-bottom: 10px; }
.ft .copy { border-top: 1px solid rgba(255, 255, 255, .1); margin-top: 32px; padding-top: 16px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* ---------- mobile ---------- */
@media (max-width: 1080px) {
    .docs { grid-template-columns: 220px minmax(0, 1fr); }
    .docs-toc { display: none; }
}
@media (max-width: 900px) {
    .menu-btn { display: block; }
    .nav, .hd-cta { display: none; }
    .hd.open .nav, .hd.open .hd-cta { display: flex; }
    .hd .wrap { flex-wrap: wrap; height: auto; min-height: 64px; padding-top: 10px; padding-bottom: 10px; }
    .hd.open .nav { flex-direction: column; width: 100%; margin: 0; }
    .hd.open .hd-cta { width: 100%; padding-bottom: 6px; }
    .hd.open .hd-cta .btn { flex: 1; }
    .hero { padding: 48px 0; }
    .hero .wrap, .split, .g2, .g3, .posts { grid-template-columns: 1fr; }
    .split:nth-child(even) .split-img { order: 0; }
    .sec { padding: 52px 0; }
    .docs { grid-template-columns: 1fr; gap: 20px; }
    .docs-nav { position: static; max-height: none; border: 1px solid var(--c-line); border-radius: 10px; padding: 10px; }
    .ft .cols { grid-template-columns: 1fr 1fr; }
    .stats { gap: 28px; }
}
.mt { margin-top: 20px; }
/* menu 2 cấp (site_settings.menu_header) */
.nav-dd { position: relative; }
.nav-dd-btn { background: none; border: 0; font: inherit; padding: 8px 12px; border-radius: 8px; color: var(--c-text); font-weight: 500; cursor: pointer; }
.nav-dd-btn:hover, .nav-dd-btn.on, .nav-dd.open .nav-dd-btn { color: var(--c-brand-ink); background: var(--c-soft); }
.nav-dd-menu { display: none; position: absolute; top: 100%; left: 0; min-width: 220px; background: #fff; border: 1px solid var(--c-line); border-radius: 12px; box-shadow: var(--shadow); padding: 6px; z-index: 60; }
.nav-dd:hover .nav-dd-menu, .nav-dd.open .nav-dd-menu { display: block; }
.nav-dd-menu a { display: block; padding: 8px 10px; }
.ft .cols { grid-template-columns: 1.4fr repeat(auto-fit, minmax(150px, 1fr)); }
.ft .soc { display: flex; gap: 12px; margin-top: 8px; }
@media (max-width: 900px) {
    .nav-dd-menu { position: static; display: block; box-shadow: none; border: 0; padding: 0 0 0 12px; }
    .nav-dd-btn { width: 100%; text-align: left; }
}
/* blog: danh mục + thẻ (GĐ3) */
.cat-nav { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; }
.cat-nav a { padding: 6px 12px; border-radius: 999px; border: 1px solid var(--c-line); background: #fff; text-decoration: none; color: var(--c-text); font-size: 14px; }
.cat-nav a.on, .cat-nav a:hover { border-color: var(--c-brand); color: var(--c-brand-ink); }
.post-cat { font-size: 12px; font-weight: 700; color: var(--c-brand); text-transform: uppercase; letter-spacing: .04em; margin-bottom: 4px; }
.tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 28px; padding-top: 16px; border-top: 1px solid var(--c-line); }
.tags a { font-size: 13px; padding: 4px 10px; border-radius: 999px; background: var(--c-soft); text-decoration: none; color: var(--c-brand-ink); }
/* khối (GĐ4) */
.hero .wrap.hero-solo { grid-template-columns: 1fr; max-width: 860px; text-align: center; }
.hero .wrap.hero-solo .actions, .hero .wrap.hero-solo .pills { justify-content: center; }
.hero-title { font-size: clamp(34px, 5vw, 56px); line-height: 1.12; margin: 18px 0 14px; color: #fff; letter-spacing: -.02em; }
.hero-title em { font-style: normal; color: var(--c-accent); }
.g4 { grid-template-columns: repeat(4, 1fr); }
.faq { max-width: 820px; margin: 0 auto; display: grid; gap: 10px; }
.faq details { border: 1px solid var(--c-line); border-radius: 12px; background: #fff; padding: 14px 18px; }
.faq summary { cursor: pointer; font-weight: 600; color: var(--c-ink); }
.faq details p { margin: 10px 0 0; color: var(--c-text); white-space: pre-line; }
.sec-md { padding: 24px 0; }
.prose-wide { max-width: var(--wrap); padding-top: 0; padding-bottom: 0; }
.preview-bar { background: #fff4d6; color: #7a4b00; text-align: center; padding: 8px 16px; font-size: 14px; font-weight: 600; }
@media (max-width: 900px) { .g4 { grid-template-columns: 1fr 1fr; } }
/* khẩu hiệu + nút liên hệ nổi (site_settings.general.tagline, site_settings.contact) */
.logo span { display: flex; flex-direction: column; line-height: 1.15; }
.logo-tag { font-size: 11px; font-weight: 500; color: var(--c-muted); }
.ft-tag { color: rgba(255, 255, 255, .9); margin-bottom: 8px; }
.fab { position: fixed; bottom: 20px; z-index: 70; display: flex; flex-direction: column; gap: 10px; }
.fab-right { right: 18px; align-items: flex-end; } .fab-left { left: 18px; align-items: flex-start; }
.fab-btn { position: relative; width: 52px; height: 52px; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; text-decoration: none; box-shadow: 0 6px 18px rgba(0, 0, 0, .18); transition: transform .15s; }
.fab-btn:hover { transform: scale(1.06); }
.fab-zalo { background: #0068ff; } .fab-zalo b { font-size: 13px; letter-spacing: -.02em; }
.fab-mes { background: linear-gradient(135deg, #0a7cff, #a033ff); }
.fab-phone { background: var(--c-brand); }
.fab-tip { position: absolute; white-space: nowrap; background: #0f1f1a; color: #fff; font-size: 13px; padding: 5px 10px; border-radius: 8px; opacity: 0; pointer-events: none; transition: opacity .15s; }
.fab-right .fab-tip { right: 62px; } .fab-left .fab-tip { left: 62px; }
.fab-btn:hover .fab-tip { opacity: 1; }
@media (max-width: 900px) { .logo-tag { display: none; } .fab-btn { width: 46px; height: 46px; } .fab-tip { display: none; } }
/* chatbot trợ lý (site/public/agent.js) */
.fab-bot { background: #0f1f1a; border: 0; cursor: pointer; }
.ag-box { position: fixed; right: 18px; bottom: 90px; width: 380px; max-height: min(640px, calc(100vh - 120px)); display: none; flex-direction: column; background: #fff; border-radius: 16px; box-shadow: 0 18px 50px rgba(0, 0, 0, .22); z-index: 80; overflow: hidden; border: 1px solid var(--c-line); }
.ag-box.open { display: flex; }
.ag-head { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; background: linear-gradient(135deg, var(--c-hero-from), var(--c-hero-to)); color: #fff; }
.ag-x { background: none; border: 0; color: #fff; font-size: 24px; line-height: 1; cursor: pointer; }
.ag-list { flex: 1; overflow-y: auto; padding: 14px; display: flex; flex-direction: column; gap: 10px; background: var(--c-soft); }
.ag-msg { max-width: 88%; padding: 9px 12px; border-radius: 14px; font-size: 14px; line-height: 1.55; word-wrap: break-word; }
.ag-me { align-self: flex-end; background: var(--c-brand); color: #fff; border-bottom-right-radius: 4px; }
.ag-bot { align-self: flex-start; background: #fff; border: 1px solid var(--c-line); border-bottom-left-radius: 4px; }
.ag-bot a { color: var(--c-brand); }
.ag-err { border-color: #f3c5c5; background: #fff6f6; }
.ag-status { padding: 4px 16px; font-size: 12px; color: var(--c-muted); background: var(--c-soft); }
.ag-ui { align-self: stretch; background: #fff; border: 1px solid var(--c-line); border-radius: 12px; padding: 10px; font-size: 13px; }
.ag-ui-t { font-weight: 700; margin-bottom: 6px; color: var(--c-ink); }
.ag-cards { display: grid; gap: 8px; }
.ag-card { border: 1px solid var(--c-line); border-radius: 10px; padding: 9px 10px; position: relative; background: #fff; margin-bottom: 6px; }
.ag-card.ag-rec { border-color: var(--c-brand); }
.ag-badge { display: inline-block; font-size: 11px; font-weight: 700; color: #fff; background: var(--c-brand); border-radius: 999px; padding: 1px 8px; margin-bottom: 4px; }
.ag-card-t { font-weight: 700; color: var(--c-ink); }
.ag-price { color: var(--c-brand-ink); font-weight: 700; margin: 2px 0; }
.ag-reason, .ag-p { color: var(--c-text); }
.ag-pro { color: #0a7a52; } .ag-con { color: #a14a00; }
.ag-h { font-weight: 700; margin-top: 6px; color: var(--c-ink); }
.ag-acts { display: flex; gap: 10px; align-items: center; margin-top: 6px; }
.ag-btn { background: var(--c-brand); color: #fff; padding: 5px 12px; border-radius: 8px; text-decoration: none; font-weight: 600; }
.ag-link { color: var(--c-brand); font-size: 13px; }
.ag-lead { border-color: var(--c-brand); background: #effaf5; }
.ag-chips { display: flex; flex-wrap: wrap; gap: 6px; padding: 8px 12px 0; background: #fff; }
.ag-chip { border: 1px solid var(--c-line); background: #fff; border-radius: 999px; padding: 5px 10px; font-size: 13px; cursor: pointer; font-family: inherit; color: var(--c-ink); }
.ag-chip:hover { border-color: var(--c-brand); }
.ag-form { display: flex; gap: 8px; padding: 10px 12px; background: #fff; }
.ag-in { flex: 1; border: 1px solid var(--c-line); border-radius: 10px; padding: 9px 11px; font: inherit; font-size: 14px; }
.ag-send { background: var(--c-brand); color: #fff; border: 0; border-radius: 10px; padding: 0 14px; font-weight: 600; cursor: pointer; font-family: inherit; }
.ag-send:disabled { opacity: .5; }
.ag-note { font-size: 11px; color: var(--c-muted); padding: 0 12px 8px; background: #fff; }
@media (max-width: 600px) { .ag-box { right: 0; left: 0; bottom: 0; width: auto; max-height: none; height: 100%; border-radius: 0; } }