:root {
  --blue-950: #06365e;
  --blue-800: #075591;
  --blue-600: #0b79cf;
  --blue-100: #eaf5fd;
  --sky-50: #f5fbff;
  --coral: #ed6b5b;
  --coral-100: #fff0ed;
  --ink: #14283a;
  --muted: #607486;
  --line: #dce8f0;
  --white: #fff;
  --shadow: 0 18px 50px rgba(16, 66, 100, 0.11);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 7% 4%, rgba(11, 121, 207, 0.13), transparent 31rem),
    linear-gradient(180deg, #fbfdff 0, #f5fbff 48rem, #fff 100%);
}

button, input, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }

.topbar {
  max-width: 1180px;
  min-height: 76px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand { display: flex; gap: 11px; align-items: center; color: inherit; text-decoration: none; }
.brand img { width: 50px; height: 50px; object-fit: cover; border-radius: 50%; box-shadow: 0 4px 12px rgba(9, 78, 129, 0.18); }
.brand span { display: grid; gap: 1px; }
.brand strong { letter-spacing: 0.08em; color: var(--blue-800); font-size: 1.08rem; }
.brand small { color: var(--muted); font-size: 0.75rem; }

.private-badge {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 12px; border: 1px solid #c9e0ef; border-radius: 999px;
  color: var(--blue-800); background: rgba(255,255,255,.76); font-size: .79rem; font-weight: 700;
}
.private-badge span { color: #2ca86b; font-size: .7rem; }

main { overflow: hidden; }
.hero {
  max-width: 1180px;
  margin: 38px auto 80px;
  padding: 0 24px;
  display: grid;
  grid-template-columns: minmax(0, .88fr) minmax(480px, 1.12fr);
  gap: 68px;
  align-items: center;
}

.hero-copy { max-width: 520px; }
.eyebrow { margin: 0 0 10px; color: var(--blue-600); font-size: .76rem; font-weight: 800; letter-spacing: .14em; }
h1, h2, h3, h4, p { text-wrap: pretty; }
h1 { margin: 0; color: var(--blue-950); font-size: clamp(2.3rem, 4vw, 3.65rem); line-height: 1.02; letter-spacing: -.045em; }
.hero-title { display: flex; flex-direction: column; gap: .12em; font-size: clamp(2.05rem, 3.15vw, 3.15rem); line-height: 1.1; letter-spacing: -.035em; }
.hero-title span { display: block; }
.lead { margin: 25px 0; color: var(--muted); font-size: 1.08rem; line-height: 1.7; }
.trust-row { display: flex; flex-wrap: wrap; gap: 8px; }
.trust-row span { padding: 7px 10px; color: #3e6076; background: #edf7fd; border-radius: 8px; font-size: .77rem; font-weight: 700; }

.finder-card {
  position: relative;
  min-height: 620px;
  padding: 34px;
  border: 1px solid rgba(194, 220, 237, .85);
  border-radius: 28px;
  background: rgba(255, 255, 255, .93);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}
.progress { height: 5px; border-radius: 99px; background: #e7f0f5; overflow: hidden; }
.progress span { display: block; width: 16.667%; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--blue-600), #45a9ea); transition: width .25s ease; }
.question-head { display: flex; justify-content: space-between; align-items: center; margin: 20px 0 10px; }
.step-label { color: var(--blue-800); font-weight: 800; font-size: .81rem; }
.text-button { border: 0; padding: 6px; color: var(--muted); background: transparent; cursor: pointer; font-size: .78rem; }
.text-button:hover { color: var(--blue-600); }
.question { display: none; border: 0; padding: 0; margin: 0; }
.question.active { display: block; animation: reveal .25s ease; }
.question legend { padding: 0; color: var(--blue-950); font-size: 1.55rem; font-weight: 800; letter-spacing: -.025em; }
.question > p { margin: 8px 0 22px; color: var(--muted); font-size: .9rem; }
.question > p strong { color: var(--blue-800); }

.grade-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.grade-grid input, .choice-list input { position: absolute; opacity: 0; pointer-events: none; }
.grade-grid span {
  display: grid; place-items: center; aspect-ratio: 1.15;
  border: 1.5px solid var(--line); border-radius: 14px;
  color: var(--blue-950); background: #fff; font-weight: 800; cursor: pointer;
  transition: .18s ease;
}
.grade-grid label:hover span { border-color: #8ec9ef; transform: translateY(-1px); }
.grade-grid input:checked + span { border-color: var(--blue-600); color: #fff; background: var(--blue-600); box-shadow: 0 7px 20px rgba(11,121,207,.22); }
.grade-grid input:focus-visible + span, .choice-list input:focus-visible + span { outline: 3px solid rgba(11,121,207,.25); outline-offset: 2px; }

.choice-list { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.choice-list label > span {
  display: grid; gap: 5px; min-height: 94px; padding: 15px;
  border: 1.5px solid var(--line); border-radius: 14px; background: #fff; cursor: pointer; transition: .18s ease;
}
.choice-list label:hover > span { border-color: #8ec9ef; transform: translateY(-1px); }
.choice-list input:checked + span { border-color: var(--blue-600); background: var(--blue-100); box-shadow: inset 3px 0 0 var(--blue-600); }
.choice-list b { color: var(--blue-950); font-size: .88rem; line-height: 1.3; }
.choice-list small { color: var(--muted); line-height: 1.35; font-size: .73rem; }
.choice-list.compact label > span { min-height: 86px; }
.field-error { min-height: 18px; margin: 10px 0 0 !important; color: #bb4137 !important; font-size: .78rem !important; font-weight: 700; }

.form-actions { position: absolute; left: 34px; right: 34px; bottom: 32px; display: flex; justify-content: flex-end; gap: 10px; }
.button {
  min-height: 46px; display: inline-flex; align-items: center; justify-content: center;
  padding: 0 19px; border: 1px solid transparent; border-radius: 12px; text-decoration: none;
  font-weight: 800; font-size: .88rem; cursor: pointer; transition: transform .16s ease, box-shadow .16s ease, background .16s ease;
}
.button:hover { transform: translateY(-1px); }
.button.primary { color: #fff; background: var(--blue-600); box-shadow: 0 8px 22px rgba(11,121,207,.2); }
.button.primary:hover { background: var(--blue-800); }
.button.secondary { color: var(--blue-800); border-color: var(--line); background: #fff; }
.button.zalo { color: #fff; background: #0674dd; }
.hidden { display: none !important; }

.results-section { max-width: 1180px; margin: 0 auto; padding: 16px 24px 72px; }
.section-heading { max-width: 760px; margin-bottom: 26px; }
.section-heading h2 { margin: 0; color: var(--blue-950); font-size: clamp(2rem, 4vw, 3.2rem); letter-spacing: -.04em; }
.section-heading > p:last-child { color: var(--muted); line-height: 1.65; }

.profile-summary { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 9px; margin: -4px 0 18px; }
.profile-item { padding: 12px 13px; border: 1px solid var(--line); border-radius: 13px; background: #fff; }
.profile-item small { display: block; margin-bottom: 4px; color: var(--blue-600); font-size: .62rem; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; }
.profile-item strong { display: block; color: #355368; font-size: .73rem; line-height: 1.4; }

.recommendation-layout { display: grid; grid-template-columns: .85fr 1.55fr; gap: 18px; align-items: stretch; }
.recommendation-card, .compare-wrap, .cta-card { border: 1px solid var(--line); border-radius: 24px; background: #fff; }
.recommendation-card { padding: 27px; background: linear-gradient(155deg, var(--blue-950), #0876ba); color: #fff; box-shadow: var(--shadow); }
.recommendation-top { display: flex; justify-content: space-between; gap: 8px; }
.match-pill, .level-pill { padding: 7px 9px; border-radius: 99px; background: rgba(255,255,255,.14); font-size: .7rem; font-weight: 800; }
.recommendation-card h3 { margin: 24px 0 10px; font-size: 1.75rem; letter-spacing: -.03em; }
.recommendation-card > p { color: rgba(255,255,255,.8); line-height: 1.55; font-size: .88rem; }
.route { display: grid; gap: 13px; margin: 24px 0; }
.route-step { position: relative; display: grid; grid-template-columns: 30px 1fr; gap: 11px; align-items: start; }
.route-step:not(:last-child)::after { content: ""; position: absolute; top: 30px; bottom: -14px; left: 14px; width: 1px; background: rgba(255,255,255,.27); }
.route-step > span { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; color: var(--blue-950); background: #fff; font-weight: 900; font-size: .72rem; }
.route-step strong { display: block; margin: 1px 0 3px; font-size: .88rem; }
.route-step small { display: block; color: rgba(255,255,255,.72); line-height: 1.45; font-size: .74rem; }
.recommendation-card .note { margin: 0; padding-top: 17px; border-top: 1px solid rgba(255,255,255,.16); font-size: .68rem; }

.compare-wrap { padding: 25px; }
.compare-head { display: flex; justify-content: space-between; align-items: end; gap: 20px; margin-bottom: 18px; }
.compare-head h3 { margin: 0; color: var(--blue-950); font-size: 1.12rem; }
.compare-head span { color: var(--muted); font-size: .7rem; }
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; }
.solution-card { padding: 18px; border: 1.5px solid var(--line); border-radius: 17px; transition: .2s ease; }
.solution-card.is-recommended { border-color: var(--blue-600); background: #f8fcff; box-shadow: 0 8px 24px rgba(11,121,207,.08); }
.solution-card.is-secondary { opacity: .78; }
.solution-icon { display: grid; place-items: center; width: 32px; height: 32px; margin-bottom: 15px; border-radius: 9px; color: #fff; background: var(--blue-600); font-size: .72rem; font-weight: 900; }
.solution-icon.coral { background: var(--coral); }
.solution-icon.green { background: #23966f; }
.solution-icon.violet { background: #7157c8; }
.solution-card h4 { margin: 0; color: var(--blue-950); font-size: 1.04rem; }
.solution-tagline { min-height: 36px; margin: 6px 0 14px; color: var(--muted); font-size: .76rem; line-height: 1.4; }
.solution-card dl { display: grid; gap: 11px; margin: 0; }
.solution-card dl div { padding-top: 10px; border-top: 1px solid #eaf0f4; }
.solution-card dt { margin-bottom: 4px; color: var(--blue-800); font-size: .65rem; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; }
.solution-card dd { margin: 0; color: #486174; font-size: .75rem; line-height: 1.48; }

.cta-card { margin-top: 18px; padding: 27px; display: flex; justify-content: space-between; align-items: center; gap: 30px; background: linear-gradient(135deg, #f4faff, #fff7f4); }
.cta-card h3 { margin: 0 0 7px; color: var(--blue-950); font-size: 1.35rem; }
.cta-card p:not(.eyebrow) { max-width: 720px; margin: 0; color: var(--muted); line-height: 1.5; font-size: .86rem; }
.cta-actions { display: flex; flex-shrink: 0; gap: 9px; }

dialog { width: min(520px, calc(100% - 28px)); max-height: calc(100dvh - 24px); padding: 26px; border: 0; border-radius: 22px; color: var(--ink); box-shadow: 0 28px 80px rgba(5, 41, 67, .24); overflow-y: auto; }
dialog::backdrop { background: rgba(7, 33, 51, .52); backdrop-filter: blur(3px); }
.dialog-head { display: flex; align-items: start; justify-content: space-between; gap: 18px; margin-bottom: 20px; }
.dialog-head h2 { margin: 0; color: var(--blue-950); font-size: 1.4rem; }
.close-button { width: 36px; height: 36px; border: 0; border-radius: 50%; color: var(--muted); background: #edf4f8; cursor: pointer; font-size: 1.4rem; }
dialog label { display: grid; gap: 7px; margin-top: 14px; color: #27485f; font-size: .77rem; font-weight: 800; }
dialog input, dialog textarea { width: 100%; padding: 12px 13px; border: 1.5px solid var(--line); border-radius: 11px; color: var(--ink); background: #fff; font-size: .88rem; outline: none; }
dialog input:focus, dialog textarea:focus { border-color: var(--blue-600); box-shadow: 0 0 0 3px rgba(11,121,207,.1); }
.privacy-note { color: var(--muted); font-size: .7rem; line-height: 1.45; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 9px; margin-top: 20px; }
#message-output { width: 100%; padding: 13px; border: 1px solid var(--line); border-radius: 12px; color: #27485f; background: #f7fbfd; line-height: 1.5; resize: none; }

.advisor-tools { max-width: 860px; margin: 12px auto 30px; padding: 0 24px; }
.advisor-tools details { border: 1px solid var(--line); border-radius: 18px; background: #fff; box-shadow: 0 10px 32px rgba(16, 66, 100, .06); overflow: hidden; }
.advisor-tools summary { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 18px 20px; cursor: pointer; list-style: none; }
.advisor-tools summary::-webkit-details-marker { display: none; }
.advisor-tools summary > span:first-child { display: grid; gap: 3px; }
.advisor-tools summary strong { color: var(--blue-950); font-size: .87rem; }
.advisor-tools summary small { color: var(--muted); font-size: .7rem; }
.summary-action { color: var(--blue-600); font-size: .74rem; font-weight: 800; white-space: nowrap; }
.advisor-tools details[open] .summary-action { font-size: 0; }
.advisor-tools details[open] .summary-action::after { content: "Đóng"; font-size: .74rem; }
.advisor-panel { display: grid; gap: 18px; padding: 19px 20px 21px; border-top: 1px solid var(--line); background: #f8fcff; }
.advisor-panel label { display: block; margin-bottom: 7px; color: #27485f; font-size: .75rem; font-weight: 800; }
.advisor-input-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 9px; }
.advisor-input-row input { min-width: 0; padding: 12px 13px; border: 1.5px solid var(--line); border-radius: 11px; color: var(--ink); background: #fff; outline: none; }
.advisor-input-row input:focus { border-color: var(--blue-600); box-shadow: 0 0 0 3px rgba(11,121,207,.1); }
.generated-link { padding-top: 17px; border-top: 1px solid var(--line); }
.generated-link p { margin: 8px 0 0; color: var(--muted); font-size: .7rem; }

footer { max-width: 1180px; margin: 0 auto; padding: 24px; display: flex; align-items: center; justify-content: center; gap: 9px; color: var(--muted); font-size: .75rem; }
footer img { width: 28px; height: 28px; border-radius: 50%; }

@keyframes reveal { from { opacity: 0; transform: translateX(8px); } to { opacity: 1; transform: translateX(0); } }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 38px; margin-top: 24px; }
  .hero-copy { max-width: 720px; }
  .recommendation-layout { grid-template-columns: 1fr; }
  .recommendation-card { display: grid; grid-template-columns: 1fr 1fr; column-gap: 24px; }
  .recommendation-top, .recommendation-card .note { grid-column: 1 / -1; }
  .profile-summary { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 650px) {
  .topbar { min-height: 66px; padding: 9px 16px; }
  .brand img { width: 43px; height: 43px; }
  .brand small { display: none; }
  .private-badge { padding: 7px 9px; font-size: .66rem; }
  .hero { margin: 23px auto 56px; padding: 0 16px; gap: 29px; }
  h1 { font-size: clamp(2.25rem, 12vw, 3.2rem); }
  .hero-title { font-size: clamp(1.85rem, 8.8vw, 2.45rem); line-height: 1.12; }
  .lead { margin: 17px 0 20px; font-size: .97rem; }
  .finder-card { min-height: 800px; padding: 24px 18px; border-radius: 21px; }
  .question legend { font-size: 1.3rem; }
  .choice-list { grid-template-columns: 1fr; gap: 8px; }
  .choice-list label > span, .choice-list.compact label > span { min-height: 72px; padding: 13px; }
  .form-actions { left: 18px; right: 18px; bottom: 21px; }
  .form-actions .button { flex: 1; }
  .results-section { padding: 6px 16px 50px; }
  .section-heading h2 { font-size: 2rem; }
  .profile-summary { grid-template-columns: 1fr 1fr; }
  .profile-item:last-child { grid-column: 1 / -1; }
  .recommendation-card { display: block; padding: 21px; border-radius: 20px; }
  .compare-wrap { padding: 19px; border-radius: 20px; }
  .compare-head { display: block; }
  .compare-head span { display: block; margin-top: 5px; }
  .compare-grid { grid-template-columns: 1fr; }
  .solution-tagline { min-height: 0; }
  .cta-card { display: block; padding: 22px; border-radius: 20px; }
  .cta-actions { display: grid; margin-top: 20px; }
  .cta-actions .button { width: 100%; }
  dialog { padding: 21px 18px; }
  .dialog-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .advisor-tools { padding: 0 16px; }
  .advisor-tools summary { padding: 16px; }
  .advisor-panel { padding: 17px 16px; }
  .advisor-input-row { grid-template-columns: 1fr; }
  .advisor-input-row .button { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}