:root {
  --bg: #f5f8fc;
  --bg-alt: #eaf0f8;
  --card: #ffffff;
  --ink: #0a2150;
  --muted: #51607a;
  --line: #d4deeb;
  --accent: #0a78cf;
  --accent-ink: #ffffff;
  --radius: 14px;
  --wrap: 1120px;
  --font: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #08142b;
    --bg-alt: #0c1b38;
    --card: #10224a;
    --ink: #eaf2ff;
    --muted: #9db0cf;
    --line: #1f3560;
    --accent: #3db4ff;
    --accent-ink: #06122a;
  }
  .brand img { background: #ffffff; border-radius: 8px; padding: 2px; }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, p, ul, ol, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; }
img { max-width: 100%; display: block; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 780px; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; z-index: 100; background: var(--ink); color: var(--bg); padding: 10px 14px; border-radius: 8px; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 22px; border-radius: 999px; border: 1.5px solid var(--ink);
  font: inherit; font-weight: 600; font-size: 15.5px; text-decoration: none;
  cursor: pointer; transition: transform .15s ease, background .15s ease, color .15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-solid { background: var(--ink); color: var(--bg); }
.btn-solid:hover { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-sm { padding: 9px 16px; font-size: 14.5px; }
.btn-block { width: 100%; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: -0.02em; text-decoration: none; font-size: 17px; }
.brand img { width: 30px; height: 30px; }
.menu { display: flex; align-items: center; gap: 26px; }
.menu a:not(.btn) { text-decoration: none; font-size: 15px; color: var(--muted); font-weight: 500; }
.menu a:not(.btn):hover { color: var(--ink); }
.nav-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 10px; background: transparent; cursor: pointer; padding: 0; }
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--ink); margin: 5px auto; transition: transform .2s ease; }
.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { padding: 84px 0 96px; }
.hero-grid { display: grid; grid-template-columns: 1.25fr .9fr; gap: 56px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; font-family: var(--mono); font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: #2fae5a; box-shadow: 0 0 0 4px color-mix(in srgb, #2fae5a 22%, transparent); }
h1 { font-size: clamp(36px, 5.6vw, 64px); line-height: 1.08; letter-spacing: -0.035em; font-weight: 800; margin: 20px 0 22px; }
h1 em { font-style: normal; color: var(--accent); }
.lead { font-size: 18.5px; color: var(--muted); max-width: 560px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 32px 0 30px; }
.hero-notes { display: grid; gap: 8px; font-size: 15px; color: var(--muted); }
.hero-notes li { padding-left: 24px; position: relative; }
.hero-notes li::before { content: ""; position: absolute; left: 0; top: .62em; width: 12px; height: 2px; background: var(--accent); }

.sheet { background: var(--card); border: 1.5px solid var(--ink); border-radius: var(--radius); box-shadow: 8px 8px 0 var(--ink); overflow: hidden; }
.sheet-head, .sheet-foot { display: flex; justify-content: space-between; padding: 14px 20px; font-family: var(--mono); font-size: 12.5px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.sheet-head { border-bottom: 1.5px solid var(--ink); }
.sheet-row { display: grid; grid-template-columns: 38px 1fr; column-gap: 8px; padding: 18px 20px; border-bottom: 1px solid var(--line); text-decoration: none; transition: background .15s ease; }
.sheet-row:hover { background: var(--bg-alt); }
.sheet-row .num { font-family: var(--mono); font-size: 13px; color: var(--accent); padding-top: 5px; grid-row: span 2; }
.sheet-row .name { font-weight: 700; font-size: 20px; letter-spacing: -0.02em; }
.sheet-row .tag { font-size: 14px; color: var(--muted); }

/* ---------- Proof strip ---------- */
.proof { margin-top: 64px; padding-top: 28px; border-top: 1px solid var(--line); display: grid; grid-template-columns: auto 1fr; gap: 24px 48px; align-items: center; }
.proof-stats { display: flex; gap: 36px; margin: 0; }
.proof-stats div { display: grid; gap: 2px; }
.proof-stats dt { font-size: 30px; font-weight: 800; letter-spacing: -0.03em; line-height: 1.1; }
.proof-stats dd { margin: 0; font-size: 13.5px; color: var(--muted); max-width: 150px; line-height: 1.4; }
.proof-names { font-size: 15px; color: var(--muted); line-height: 1.7; }
.proof-names span { display: block; font-family: var(--mono); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--accent); }

/* ---------- Inline CTA ---------- */
.cta-inline { margin-top: 56px; display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; padding: 24px 28px; border: 1.5px solid var(--ink); border-radius: var(--radius); background: var(--card); }
.cta-inline p { font-size: 18px; font-weight: 600; letter-spacing: -0.01em; }

/* ---------- Thu gọn danh sách dự án ---------- */
.projects .is-more { display: none; }
.projects-toggle { margin-top: 20px; }
.projects-toggle + .projects-sub { margin-top: 64px; }

/* ---------- Nút tư vấn nổi trên điện thoại ---------- */
.mobile-cta { display: none; }

/* ---------- Sections ---------- */
.section { padding: 92px 0; }
.section-alt { background: var(--bg-alt); border-block: 1px solid var(--line); }
.section-head { max-width: 680px; margin-bottom: 48px; }
.kicker { font-family: var(--mono); font-size: 13px; text-transform: uppercase; letter-spacing: .08em; color: var(--accent); margin-bottom: 12px; }
h2 { font-size: clamp(28px, 3.8vw, 42px); line-height: 1.15; letter-spacing: -0.03em; font-weight: 800; }
.section-head p:last-child { margin-top: 14px; color: var(--muted); font-size: 17.5px; }
h3 { font-size: 21px; letter-spacing: -0.02em; line-height: 1.3; }

/* ---------- Services ---------- */
.services { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.service { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; display: flex; flex-direction: column; gap: 16px; transition: border-color .15s ease, transform .15s ease; }
.service:hover { border-color: var(--ink); transform: translateY(-3px); }
.service-top { display: flex; align-items: baseline; gap: 14px; }
.num { font-family: var(--mono); font-size: 13px; color: var(--accent); }
.service > p { color: var(--muted); }
.service ul { display: grid; gap: 9px; font-size: 15.5px; }
.service li { padding-left: 22px; position: relative; }
.service li::before { content: "+"; position: absolute; left: 0; color: var(--accent); font-family: var(--mono); }
.service .service-out { margin-top: auto; padding-top: 16px; border-top: 1px dashed var(--line); font-size: 15px; color: var(--ink); }

/* ---------- Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1.5px solid var(--ink); border-radius: var(--radius); overflow: hidden; background: var(--card); }
.steps li { padding: 28px 24px; border-right: 1px solid var(--line); }
.steps li:last-child { border-right: 0; }
.step-n { font-family: var(--mono); font-size: 12.5px; text-transform: uppercase; letter-spacing: .06em; color: var(--accent); }
.steps h3 { margin: 10px 0 10px; font-size: 19px; }
.steps p { font-size: 15px; color: var(--muted); }

/* ---------- Projects ---------- */
.projects { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.project-thumb, .about-photo {
  display: grid; place-items: center; border-radius: var(--radius); border: 1.5px dashed var(--line);
  background: repeating-linear-gradient(45deg, transparent 0 12px, color-mix(in srgb, var(--line) 45%, transparent) 12px 13px);
  color: var(--muted); font-family: var(--mono); font-size: 13px;
}
.project-thumb { aspect-ratio: 4 / 3; margin-bottom: 18px; }
.projects + .projects-sub { margin-top: 64px; }
.projects-sub { font-family: var(--mono); font-size: 13px; font-weight: 500; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 20px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.project-shot { aspect-ratio: 16 / 10; margin-bottom: 18px; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--card); }
.project-shot img, .project-shot video { display: block; width: 100%; height: 100%; object-fit: cover; object-position: top center; transition: transform .35s ease; }
.project-shot-tall { aspect-ratio: 4 / 5; }
.projects-tall { margin-top: 28px; }
.projects-2 { grid-template-columns: repeat(2, 1fr); margin-bottom: 28px; }
.project-shot-left img { object-position: top left; }
.project-shot-mid img { object-position: center; }
.project-link { display: block; text-decoration: none; }
.project-link:hover .project-shot { border-color: var(--ink); }
.project-link:hover .project-shot img { transform: scale(1.03); }
.project p:not(.project-tag) { color: var(--muted); font-size: 15.5px; }
.project .go { display: inline-block; margin-top: 10px; font-family: var(--mono); font-size: 13px; color: var(--accent); }
.project-tag { font-family: var(--mono); font-size: 12.5px; text-transform: uppercase; letter-spacing: .06em; color: var(--accent); margin-bottom: 6px; }
.project h3 { margin-bottom: 8px; }
.project p:last-child { color: var(--muted); font-size: 15.5px; }

/* ---------- Prices ---------- */
.prices { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.price { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; }
.price h3 { font-size: 17px; }
.price-n { margin: 14px 0 6px; font-size: 16px; color: var(--muted); }
.price-n b { font-size: 30px; letter-spacing: -0.03em; color: var(--ink); }
.price-d { font-size: 14.5px; color: var(--muted); }
.program { margin-top: 16px; display: grid; grid-template-columns: 1.6fr 1fr; gap: 40px; align-items: center; padding: 34px 36px; border-radius: var(--radius); background: var(--ink); color: var(--bg); }
.program-tag { font-family: var(--mono); font-size: 12.5px; text-transform: uppercase; letter-spacing: .08em; opacity: .7; margin-bottom: 10px; }
.program h3 { font-size: 26px; margin-bottom: 10px; }
.program p { opacity: .85; }
.program ul { margin-top: 16px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px 24px; font-size: 15px; }
.program li { padding-left: 20px; position: relative; }
.program li::before { content: "+"; position: absolute; left: 0; font-family: var(--mono); opacity: .7; }
.program-price { display: grid; gap: 18px; justify-items: start; }
.program-price .price-n { margin: 0; color: inherit; opacity: 1; }
.program-price .price-n b { font-size: 44px; color: inherit; }
.program .btn { background: var(--bg); color: var(--ink); border-color: var(--bg); }
.program .btn:hover { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
@media (max-width: 760px) {
  .program { grid-template-columns: 1fr; gap: 24px; padding: 26px 20px; }
  .program ul { grid-template-columns: 1fr; }
}
.price-note { margin-top: 26px; padding: 18px 22px; border-left: 3px solid var(--accent); background: var(--card); border-radius: 0 var(--radius) var(--radius) 0; font-size: 15.5px; }

/* ---------- About ---------- */
.about { display: grid; grid-template-columns: .8fr 1.2fr; gap: 56px; align-items: center; }
.about-photo { aspect-ratio: 4 / 5; }
.about h2 { margin-bottom: 18px; }
.about p:not(.kicker) { color: var(--muted); margin-bottom: 14px; }
.facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--line); }
.facts dt { font-family: var(--mono); font-size: 12.5px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.facts dd { font-size: 20px; font-weight: 700; letter-spacing: -0.02em; margin-top: 4px; }

/* ---------- Activities ---------- */
.activities { margin-top: 72px; }
.activity-grid { display: grid; grid-template-columns: 1.4fr 1fr; grid-template-rows: 1fr 1fr; gap: 16px; }
.activity { margin: 0; position: relative; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); background: var(--card); }
.activity-main { grid-row: span 2; }
.activity img { width: 100%; height: 100%; object-fit: cover; display: block; aspect-ratio: 16 / 9; }
.activity-main img { aspect-ratio: auto; min-height: 100%; }
.activity figcaption { position: absolute; left: 12px; bottom: 12px; right: 12px; width: fit-content; max-width: calc(100% - 24px); padding: 7px 12px; border-radius: 8px; background: rgba(10, 20, 40, .72); color: #fff; font-size: 14px; line-height: 1.4; }
@media (max-width: 760px) {
  .activities { margin-top: 48px; }
  .activity-grid { grid-template-columns: 1fr; grid-template-rows: none; }
  .activity-main { grid-row: auto; }
  .activity-main img { aspect-ratio: 16 / 9; }
}
@media print {
  .activity-grid { grid-template-columns: 1.4fr 1fr; grid-template-rows: 1fr 1fr; }
  .activity-main { grid-row: span 2; }
  .activities { break-inside: avoid; }
}

/* ---------- FAQ ---------- */
details { border-bottom: 1px solid var(--line); }
details:first-of-type { border-top: 1px solid var(--line); }
summary { cursor: pointer; list-style: none; padding: 20px 40px 20px 0; font-weight: 600; font-size: 17.5px; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-family: var(--mono); font-size: 22px; color: var(--accent); }
details[open] summary::after { content: "−"; }
details p { padding: 0 0 22px; color: var(--muted); max-width: 660px; }
/* Câu hỏi chưa có câu trả lời (data-draft): ẩn với khách, chỉ hiện khi bật Sửa trang. */
details[data-draft] { display: none; }
html:not(.editing) details[data-draft]:first-of-type + details { border-top: 1px solid var(--line); }
.editing details[data-draft] { display: block; }
.editing details[data-draft] summary::before { content: "Đang ẩn với khách · "; color: var(--accent); font-weight: 400; }

/* ---------- Contact ---------- */
.contact { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: start; }
.contact h2 { margin-bottom: 16px; }
.contact > div > p:not(.kicker) { color: var(--muted); }
.channels { margin-top: 30px; display: grid; }
.channels li { display: flex; justify-content: space-between; gap: 16px; padding: 15px 0; border-bottom: 1px solid var(--line); }
.channels span { font-family: var(--mono); font-size: 12.5px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); padding-top: 3px; }
.channels a { font-weight: 600; text-decoration-color: var(--accent); text-underline-offset: 4px; overflow-wrap: anywhere; text-align: right; }

.form { background: var(--card); border: 1.5px solid var(--ink); border-radius: var(--radius); padding: 30px; box-shadow: 8px 8px 0 var(--ink); display: grid; gap: 18px; }
.field { display: grid; gap: 7px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
label { font-size: 14px; font-weight: 600; }
input, select, textarea {
  width: 100%; font: inherit; font-size: 16px; color: var(--ink);
  background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px;
}
textarea { resize: vertical; min-height: 110px; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.is-invalid { border-color: var(--accent); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status { font-size: 14.5px; color: var(--muted); min-height: 1.4em; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--line); padding: 30px 0; font-size: 14.5px; color: var(--muted); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer .brand { color: var(--ink); }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .service { transition: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-grid, .about, .contact { grid-template-columns: 1fr; gap: 44px; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .steps li:nth-child(2) { border-right: 0; }
  .steps li:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .services { grid-template-columns: 1fr; }
  .projects { grid-template-columns: repeat(2, 1fr); }
  .about-photo { max-width: 340px; }
}
@media (max-width: 760px) {
  .proof { grid-template-columns: 1fr; margin-top: 44px; }
  .proof-stats { gap: 20px; justify-content: space-between; }
  .proof-stats dt { font-size: 24px; }
  .mobile-cta {
    display: flex; justify-content: center; position: fixed; left: 16px; right: 16px; bottom: 14px; z-index: 40;
    padding: 14px 20px; border-radius: 999px; background: var(--ink); color: var(--bg); font-weight: 600; text-decoration: none;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .25); transition: opacity .2s ease, transform .2s ease;
  }
  .mobile-cta.is-hidden { opacity: 0; transform: translateY(20px); pointer-events: none; }
  .footer { padding-bottom: 90px; }
  .wrap { padding: 0 16px; }
  .hero { padding: 52px 0 64px; }
  .section { padding: 64px 0; }
  .nav-toggle { display: block; }
  .menu {
    display: none; position: absolute; left: 0; right: 0; top: 64px;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line); padding: 8px 16px 18px;
  }
  .menu.open { display: flex; }
  .menu a:not(.btn) { padding: 13px 0; border-bottom: 1px solid var(--line); font-size: 16px; }
  .menu .btn { margin-top: 14px; }
  .services, .projects, .projects-2, .prices, .steps, .field-row { grid-template-columns: 1fr; }
  .steps li { border-right: 0; border-bottom: 1px solid var(--line); }
  .steps li:last-child { border-bottom: 0; }
  .sheet, .form { box-shadow: 5px 5px 0 var(--ink); }
  .service, .form { padding: 24px 20px; }
  .facts { grid-template-columns: 1fr; }
}

/* ---------- Bài toán (trang chủ) ---------- */
.problems { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.problem { display: flex; flex-direction: column; gap: 12px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; text-decoration: none; transition: border-color .15s ease, transform .15s ease; }
.problem:hover { border-color: var(--ink); transform: translateY(-3px); }
.problem h3 { font-size: 18.5px; }
.problem p { font-size: 15px; color: var(--muted); }
.problem .go { margin-top: auto; padding-top: 12px; font-weight: 600; font-size: 14.5px; color: var(--accent); }
.problem-main { border: 1.5px solid var(--ink); box-shadow: 6px 6px 0 var(--ink); }

/* ---------- Hậu trường ---------- */
.backstage { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
.backstage video, .backstage img { width: 100%; height: 100%; aspect-ratio: 9 / 16; object-fit: cover; border-radius: var(--radius); background: var(--bg-alt); }
.backstage .main { grid-column: span 2; grid-row: span 2; }
.backstage video { border: 1.5px solid var(--ink); }
.strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 26px; }
.strip img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; border-radius: var(--radius); }
.strip-cap { margin-top: 10px; font-size: 14px; color: var(--muted); }
@media (max-width: 980px) { .backstage { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 760px) { .backstage { grid-template-columns: repeat(2, 1fr); } .strip { grid-template-columns: repeat(2, 1fr); } }

.about-logo { display: grid; place-items: center; padding: 32px; background: #ffffff; border: 1px solid var(--line); border-radius: var(--radius); }
.about-logo img { width: 100%; max-width: 360px; height: auto; }

/* ---------- Trang giải pháp ---------- */
.page-hero { padding: 64px 0 72px; }
.page-hero h1 { font-size: clamp(32px, 4.6vw, 54px); max-width: 900px; }
.page-hero .lead { max-width: 720px; }
.crumb { font-family: var(--mono); font-size: 13px; color: var(--muted); }
.crumb a { text-decoration: none; }
.crumb a:hover { color: var(--ink); }

.cols-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.card h3 { font-size: 18.5px; margin-bottom: 8px; }
.card p { font-size: 15.5px; color: var(--muted); }
.card .num, .card .step-n { display: block; margin-bottom: 10px; }
.card ul { display: grid; gap: 8px; margin-top: 12px; font-size: 15px; }
.card li { padding-left: 20px; position: relative; }
.card li::before { content: "+"; position: absolute; left: 0; color: var(--accent); font-family: var(--mono); }

.funnel { border: 1.5px solid var(--ink); border-radius: var(--radius); background: var(--card); overflow: hidden; }
.funnel-row { display: grid; grid-template-columns: 52px 190px 1fr 250px; gap: 20px; padding: 22px 24px; border-bottom: 1px solid var(--line); align-items: start; }
.funnel-row:last-child { border-bottom: 0; }
.funnel-row h3 { font-size: 18px; }
.funnel-row p { font-size: 15px; color: var(--muted); }
.funnel-row .metric { font-size: 14px; color: var(--ink); }
.funnel-row .metric b { display: block; font-family: var(--mono); font-size: 12px; font-weight: 500; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin-bottom: 3px; }

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); }
table { width: 100%; border-collapse: collapse; font-size: 15px; min-width: 720px; }
th, td { text-align: left; vertical-align: top; padding: 15px 18px; border-bottom: 1px solid var(--line); }
tr:last-child td { border-bottom: 0; }
th { font-family: var(--mono); font-size: 12px; font-weight: 500; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
td:first-child { font-weight: 600; white-space: nowrap; }
td { color: var(--muted); }
td:first-child { color: var(--ink); }

.kpis { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.kpi { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.kpi h3 { font-size: 16px; margin-bottom: 6px; }
.kpi p { font-size: 14px; color: var(--muted); }
.kpi dl { margin-top: 14px; padding-top: 12px; border-top: 1px dashed var(--line); display: grid; gap: 4px; font-size: 13.5px; }
.kpi dl div { display: flex; justify-content: space-between; gap: 8px; }
.kpi dt { color: var(--muted); }
.kpi dd { font-weight: 600; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.note { margin-top: 26px; padding: 18px 22px; border-left: 3px solid var(--accent); background: var(--card); border-radius: 0 var(--radius) var(--radius) 0; font-size: 15.5px; }
.cta-band { text-align: center; }
.cta-band h2 { max-width: 720px; margin: 0 auto 14px; }
.cta-band p { color: var(--muted); max-width: 600px; margin: 0 auto 28px; }

@media (max-width: 980px) {
  .problems { grid-template-columns: repeat(2, 1fr); }
  .cols-3 { grid-template-columns: 1fr; }
  .kpis { grid-template-columns: repeat(2, 1fr); }
  .funnel-row { grid-template-columns: 44px 1fr; }
  .funnel-row > p, .funnel-row .metric { grid-column: 2; }
}
@media (max-width: 760px) {
  .problems, .split, .kpis { grid-template-columns: 1fr; }
  .page-hero { padding: 44px 0 52px; }
  .problem-main { box-shadow: 5px 5px 0 var(--ink); }
}

/* ---------- Print / PDF ---------- */
/* Trang rộng 320mm (tỉ lệ A4) để giữ bố cục desktop; khi in ra giấy A4 sẽ tự thu nhỏ vừa trang. */
@page { size: 320mm 452mm; margin: 0; }
@media print {
  .projects .is-more { display: block; }
  .projects-toggle, .mobile-cta, .cta-inline .btn { display: none !important; }
  :root {
    --bg: #f5f8fc; --bg-alt: #eaf0f8; --card: #ffffff; --ink: #0a2150; --muted: #51607a; --line: #d4deeb; --accent: #0a78cf; --accent-ink: #ffffff;
  }
  * { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  html { scroll-behavior: auto; }
  .nav { position: static; backdrop-filter: none; background: var(--bg); }
  .skip, .nav-toggle, .form-status, .footer-inner > a:last-child { display: none; }
  .reveal { opacity: 1 !important; transform: none !important; transition: none; }
  .hero, .section, .footer { break-inside: avoid; }
  .service, .project, .price, .program, .steps li, details, .form, .sheet { break-inside: avoid; }
  .program { grid-template-columns: 1.6fr 1fr; gap: 40px; padding: 34px 36px; }
  .program ul { grid-template-columns: 1fr 1fr; }

  /* Chrome tính media query khi in theo bề rộng hẹp, nên phải khai báo lại bố cục desktop ở đây. */
  .wrap { padding: 0 24px; }
  .hero { padding: 72px 0 80px; }
  .section { padding: 72px 0; }
  .menu { display: flex; position: static; flex-direction: row; align-items: center; gap: 26px; padding: 0; border: 0; }
  .menu a:not(.btn) { padding: 0; border: 0; font-size: 15px; }
  .menu .btn { margin: 0; }
  .hero-grid { grid-template-columns: 1.25fr .9fr; gap: 56px; }
  .about { grid-template-columns: .8fr 1.2fr; gap: 56px; }
  .contact { grid-template-columns: 1fr 1.1fr; gap: 56px; }
  .about-photo { max-width: none; }
  .services { grid-template-columns: repeat(3, 1fr); }
  .projects { grid-template-columns: repeat(3, 1fr); }
  .projects-2 { grid-template-columns: repeat(2, 1fr); }
  .prices { grid-template-columns: repeat(3, 1fr); }
  .facts { grid-template-columns: repeat(3, 1fr); }
  .field-row { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: repeat(4, 1fr); }
  .steps li, .steps li:nth-child(2), .steps li:nth-child(-n+2) { border-right: 1px solid var(--line); border-bottom: 0; }
  .steps li:last-child { border-right: 0; }
  .sheet, .form { box-shadow: 8px 8px 0 var(--ink); }
  .service, .form { padding: 30px; }
  .page-hero { padding: 56px 0 64px; }
  .cta-band { padding: 36px 0; }
  .footer { padding: 16px 0; break-before: avoid; }
  .problems { grid-template-columns: repeat(4, 1fr); }
  .backstage { grid-template-columns: repeat(6, 1fr); }
  .strip { grid-template-columns: repeat(4, 1fr); }
  .backstage img, .backstage video, .strip img { break-inside: avoid; }
  .cols-3 { grid-template-columns: repeat(3, 1fr); }
  .kpis { grid-template-columns: repeat(5, 1fr); }
  .split { grid-template-columns: 1fr 1fr; }
  .funnel-row { grid-template-columns: 52px 190px 1fr 250px; }
  .funnel-row > p, .funnel-row .metric { grid-column: auto; }
  .problem-main { box-shadow: 6px 6px 0 var(--ink); }
  .table-wrap { overflow: visible; }
  .card, .kpi, .problem, .funnel-row, tr, .note { break-inside: avoid; }
}