/* ===== HAEDU – bảng màu & nền tảng ===== */
:root {
  --primary: #1f9053;
  --primary-dark: #146b3c;
  --primary-deep: #0d4a29;
  --primary-soft: #e8f5ec;
  --primary-tint: #f3faf5;
  --gold: #f2c94c;
  --gold-dark: #b8860b;
  --ink: #101828;
  --ink-2: #344054;
  --muted: #667085;
  --line: #e4e9e6;
  --surface: #f6f8f7;
  --white: #ffffff;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
  --shadow: 0 8px 24px -8px rgba(16, 24, 40, .14);
  --shadow-lg: 0 24px 48px -16px rgba(13, 74, 41, .22);
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  margin: 0;
  font-family: "Be Vietnam Pro", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; line-height: 1.2; letter-spacing: -.01em; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
button { font: inherit; }

.container { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
.section { padding: 88px 0; }
.section.alt { background: var(--surface); }
.section-head { max-width: 680px; margin-bottom: 44px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
  color: var(--primary); margin-bottom: 14px;
}
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--primary); border-radius: 2px; }
.section-head.center .eyebrow::before { display: none; }
.section-head h2 { font-size: clamp(28px, 3.4vw, 40px); font-weight: 700; color: var(--ink); }
.section-head p { margin-top: 14px; color: var(--muted); font-size: 17px; }
.head-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.head-row .section-head { margin-bottom: 0; }
.link-more { font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 6px; }
.link-more:hover { color: var(--primary-dark); }

/* ===== Nút ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 22px; border-radius: 12px; font-weight: 600; font-size: 15px;
  border: 1px solid transparent; cursor: pointer; transition: .18s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 6px 16px -6px rgba(31, 144, 83, .6); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn-outline { background: #fff; color: var(--primary-dark); border-color: var(--line); }
.btn-outline:hover { border-color: var(--primary); background: var(--primary-tint); }
.btn-ghost { background: transparent; color: var(--ink-2); }
.btn-ghost:hover { color: var(--primary); }
.btn-gold { background: var(--gold); color: #3d2e00; }
.btn-gold:hover { background: #e6bb2f; }
.btn-lg { padding: 16px 28px; font-size: 16px; border-radius: 14px; }
.btn-sm { padding: 9px 14px; font-size: 14px; border-radius: 10px; }

/* ===== Thanh điều hướng ===== */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .86); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.topbar .container { display: flex; align-items: center; gap: 16px; height: 72px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 20px; color: var(--primary-deep); }
.brand img { width: 44px; height: 44px; }
.brand small { display: block; font-size: 11px; font-weight: 500; color: var(--muted); letter-spacing: .04em; }
.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a { padding: 8px 11px; border-radius: 10px; font-weight: 500; font-size: 14.5px; color: var(--ink-2); white-space: nowrap; }
.nav a:hover, .nav a.active { color: var(--primary-dark); background: var(--primary-soft); }
.nav-cta { display: flex; gap: 10px; }
.nav-toggle { display: none; margin-left: auto; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 10px; background: #fff; cursor: pointer; }
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--ink); margin: 4px auto; border-radius: 2px; }

/* ===== Hero ===== */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(31, 144, 83, .18), transparent 60%),
    radial-gradient(600px 400px at 0% 100%, rgba(242, 201, 76, .18), transparent 60%),
    linear-gradient(180deg, #fbfdfb 0%, #ffffff 100%);
  padding: 72px 0 40px;
}
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px 6px 6px;
  background: #fff; border: 1px solid var(--line); border-radius: 999px; font-size: 13px; font-weight: 500; color: var(--ink-2);
  box-shadow: var(--shadow-sm); margin-bottom: 22px;
}
.hero-badge b { background: var(--primary); color: #fff; border-radius: 999px; padding: 2px 10px; font-size: 12px; }
.hero h1 { font-size: clamp(36px, 5vw, 58px); font-weight: 800; letter-spacing: -.02em; color: var(--ink); }
.hero h1 span { color: var(--primary); }
.hero .lede { margin-top: 20px; font-size: 18px; color: var(--muted); max-width: 560px; }
.hero-actions { display: flex; gap: 12px; margin-top: 30px; flex-wrap: wrap; }
.hero-trust { display: flex; gap: 22px; margin-top: 36px; flex-wrap: wrap; }
.hero-trust div strong { display: block; font-size: 22px; font-weight: 800; color: var(--primary-deep); }
.hero-trust div span { font-size: 13px; color: var(--muted); }

.hero-visual { position: relative; }
.hero-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg); padding: 26px; position: relative; z-index: 2;
}
.hero-card-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.hero-card-top h3 { font-size: 17px; }
.pill { font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; background: var(--primary-soft); color: var(--primary-dark); }
.pill.gold { background: #fff6d6; color: var(--gold-dark); }
.pill.red { background: #fee4e2; color: #b42318; }
.route { display: grid; gap: 10px; }
.route-item {
  display: grid; grid-template-columns: 40px 1fr auto; align-items: center; gap: 12px;
  padding: 12px 14px; border-radius: 12px; background: var(--surface); border: 1px solid transparent; transition: .18s;
}
.route-item:hover { border-color: var(--primary); background: var(--primary-tint); }
.route-item i {
  width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center;
  background: #fff; font-style: normal; font-size: 18px; box-shadow: var(--shadow-sm);
}
.route-item b { display: block; font-size: 14px; }
.route-item small { color: var(--muted); font-size: 12.5px; }
.route-item em { font-style: normal; font-size: 12px; font-weight: 700; color: var(--primary); }
.float-card {
  position: absolute; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 12px 16px;
  box-shadow: var(--shadow); font-size: 13px; z-index: 3; display: flex; align-items: center; gap: 10px;
}
.float-card strong { display: block; font-size: 15px; color: var(--primary-deep); }
.float-a { top: -22px; right: -18px; }
.float-b { bottom: -22px; left: -26px; }
.float-card .dot { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; background: var(--primary-soft); font-size: 16px; }

/* ===== Thẻ công cụ nhanh ===== */
.tools { margin-top: 56px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.tool {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px;
  display: flex; gap: 14px; align-items: flex-start; transition: .18s; box-shadow: var(--shadow-sm);
}
.tool:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: rgba(31, 144, 83, .4); }
.tool .ico { width: 44px; height: 44px; flex: none; border-radius: 12px; background: var(--primary-soft); color: var(--primary-dark); display: grid; place-items: center; font-size: 20px; }
.tool b { display: block; font-size: 15px; margin-bottom: 4px; }
.tool span { font-size: 13.5px; color: var(--muted); }

/* ===== Logo strip ===== */
.strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; padding: 22px 0; }
.strip .container { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; justify-content: center; color: var(--muted); font-size: 14px; }
.strip .container > span:first-child { font-weight: 600; color: var(--ink-2); }
.strip .u { font-weight: 600; color: var(--ink-2); display: inline-flex; align-items: center; gap: 8px; }
.strip .u::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--primary); }

/* ===== Lưới thẻ chung ===== */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden;
  display: flex; flex-direction: column; transition: .2s; box-shadow: var(--shadow-sm);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.card-cover {
  height: 150px; position: relative; display: flex; align-items: flex-end; padding: 16px;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary)); color: #fff;
}
.card-cover.c2 { background: linear-gradient(135deg, #0d4a29, #1f9053 60%, #6fcf97); }
.card-cover.c3 { background: linear-gradient(135deg, #1b5e3a, #2f9e63 55%, #f2c94c); }
.card-cover.c4 { background: linear-gradient(135deg, #0f3d24, #2a8a54); }
.card-cover.c5 { background: linear-gradient(135deg, #17603a, #3aa96f 60%, #a3e4c1); }
.card-cover .zh {
  position: absolute; right: 14px; top: 10px; font-size: 64px; font-weight: 700; opacity: .16; line-height: 1;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", serif;
}
.card-cover .tag { position: absolute; left: 14px; top: 14px; font-size: 11.5px; font-weight: 700; padding: 4px 10px; border-radius: 999px; background: rgba(255,255,255,.92); color: var(--primary-dark); }
.card-cover .tag.hot { background: #ff6b35; color: #fff; }
.card-cover h3 { font-size: 20px; }
.card-body { padding: 20px 22px 22px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.card-body p { color: var(--muted); font-size: 14.5px; }
.kv { display: grid; gap: 8px; font-size: 14px; }
.kv div { display: flex; justify-content: space-between; gap: 12px; padding-bottom: 8px; border-bottom: 1px dashed var(--line); }
.kv div:last-child { border-bottom: 0; padding-bottom: 0; }
.kv span { color: var(--muted); flex: none; }
.kv b { text-align: right; color: var(--ink); font-weight: 600; }
.card-foot { margin-top: auto; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 6px; }
.price { font-weight: 800; color: var(--primary-dark); font-size: 17px; }
.price small { font-weight: 500; color: var(--muted); font-size: 12.5px; display: block; }

.needhsk { background: #eaf2ff; border: 1px solid #c7dafc; color: #1d3f7a; font-weight: 700; font-size: 13px; padding: 8px 12px; border-radius: 10px; }
.nohsk { background: #fff6d6; border: 1px solid #f5e3a1; color: #6b4d00; font-weight: 700; font-size: 13px; padding: 8px 12px; border-radius: 10px; }

/* ===== Trường đối tác ===== */
.school { display: flex; gap: 14px; align-items: center; padding: 16px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); transition: .18s; position: relative; }
.school:hover { border-color: rgba(31,144,83,.5); box-shadow: var(--shadow); }
.school .crest { width: 54px; height: 54px; flex: none; border-radius: 14px; display: grid; place-items: center; font-weight: 800; font-size: 20px; line-height: 1; text-align: center; padding: 4px; word-break: break-all; color: #fff; background: linear-gradient(135deg, var(--primary-dark), var(--primary)); font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", serif; }
.school b { display: block; font-size: 15px; line-height: 1.3; }
.school small { color: var(--muted); font-size: 13px; }
.school .hot { position: absolute; top: -8px; right: 12px; font-size: 11px; font-weight: 700; background: #ff6b35; color: #fff; padding: 3px 9px; border-radius: 999px; }
.school .badges { display: flex; gap: 6px; margin-top: 6px; flex-wrap: wrap; }
.school .badges span { font-size: 11px; font-weight: 600; padding: 2px 8px; border-radius: 6px; background: var(--primary-soft); color: var(--primary-dark); }

/* ===== Thẻ trường có ảnh ===== */
.school-card { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); transition: .2s; }
.school-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.sc-cover { height: 160px; background-size: cover; background-position: center; background-color: var(--primary-soft); position: relative; }
.sc-cover .tag { position: absolute; left: 12px; top: 12px; font-size: 11.5px; font-weight: 700; padding: 4px 10px; border-radius: 999px; background: #ff6b35; color: #fff; }
.sc-logo { position: absolute; right: 12px; bottom: -22px; width: 56px; height: 56px; border-radius: 14px; background: #fff; padding: 5px; object-fit: contain; box-shadow: var(--shadow); border: 1px solid var(--line); }
.sc-body { padding: 26px 18px 18px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.sc-body b { font-size: 15.5px; line-height: 1.3; padding-right: 50px; }
.sc-body small { color: var(--muted); font-size: 13px; }
.sc-body .badges { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 4px; }
.sc-body .badges span { font-size: 11.5px; font-weight: 600; padding: 3px 8px; border-radius: 6px; background: var(--primary-soft); color: var(--primary-dark); }
.sc-body em { font-style: normal; font-size: 13px; font-weight: 700; color: var(--primary); margin-top: auto; padding-top: 8px; }
#mHero img { width: 100%; height: 220px; object-fit: cover; border-radius: 14px; }
.mtext { font-size: 14.5px; color: var(--ink-2); white-space: pre-line; }

/* ===== Lộ trình thời gian ===== */
.timeline { display: grid; grid-template-columns: repeat(6, 1fr); gap: 0; position: relative; margin-top: 10px; }
.timeline::before { content: ""; position: absolute; left: 8%; right: 8%; top: 22px; height: 3px; background: var(--primary-soft); }
.tl { text-align: center; padding: 0 8px; position: relative; }
.tl i { display: block; width: 46px; height: 46px; border-radius: 50%; margin: 0 auto 12px; background: var(--primary); color: #fff; font-style: normal; font-weight: 800; display: grid; place-items: center; box-shadow: 0 0 0 6px #fff; position: relative; }
.tl.gold i { background: var(--gold); color: #3d2e00; }
.tl b { display: block; font-size: 14px; }
.tl span { font-size: 12.5px; color: var(--muted); }

/* ===== Nghề nghiệp ===== */
.career { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 24px; display: flex; flex-direction: column; gap: 12px; box-shadow: var(--shadow-sm); }
.career h3 { font-size: 19px; color: var(--primary-deep); }
.career .sub { color: var(--muted); font-size: 14px; }
.career h5 { margin: 6px 0 0; font-size: 12.5px; letter-spacing: .05em; text-transform: uppercase; color: var(--primary); }
.career .chips { display: flex; flex-wrap: wrap; gap: 6px; }
.career .chips span { font-size: 12.5px; padding: 4px 10px; border-radius: 999px; background: var(--surface); border: 1px solid var(--line); }
.career .path { font-size: 13.5px; color: var(--ink-2); }

/* ===== Liên hệ ===== */
.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.contact-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow-sm); display: flex; flex-direction: column; gap: 6px; }
.contact-card .ico { width: 44px; height: 44px; border-radius: 12px; background: var(--primary-soft); display: grid; place-items: center; font-size: 20px; margin-bottom: 6px; }
.contact-card b { font-size: 15px; }
.contact-card a, .contact-card span.v { color: var(--primary-dark); font-weight: 600; }
.contact-card small { color: var(--muted); font-size: 13px; }
@media (max-width: 1024px) { .timeline { grid-template-columns: repeat(3, 1fr); row-gap: 26px; } .timeline::before { display: none; } .contact-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 760px) { .timeline, .contact-grid { grid-template-columns: 1fr 1fr; } }

/* ===== Học bổng ===== */
.scholar { background: linear-gradient(180deg, var(--primary-deep), var(--primary-dark)); color: #fff; border-radius: 32px; padding: 64px 56px; position: relative; overflow: hidden; }
.scholar::after { content: "奖学金"; position: absolute; right: 30px; bottom: -30px; font-size: 180px; font-weight: 800; opacity: .06; font-family: "PingFang SC", "Hiragino Sans GB", serif; }
.scholar .eyebrow { color: var(--gold); } .scholar .eyebrow::before { background: var(--gold); }
.scholar h2 { font-size: clamp(28px, 3.2vw, 38px); }
.scholar .lede { margin-top: 14px; color: rgba(255,255,255,.78); max-width: 620px; font-size: 16.5px; }
.scholar-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 40px; position: relative; z-index: 1; }
.sc { background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.16); border-radius: 18px; padding: 22px; backdrop-filter: blur(6px); }
.sc .lvl { font-size: 12px; font-weight: 700; letter-spacing: .06em; color: var(--gold); text-transform: uppercase; }
.sc h3 { font-size: 19px; margin: 8px 0 10px; }
.sc p { color: rgba(255,255,255,.78); font-size: 14px; }
.sc ul { margin-top: 12px; display: grid; gap: 6px; font-size: 13.5px; }
.sc li::before { content: "✓ "; color: var(--gold); font-weight: 700; }

/* ===== Quy trình ===== */
.steps { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; position: relative; }
.step { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 18px; position: relative; }
.step .n { width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; font-weight: 800; background: var(--primary); color: #fff; margin-bottom: 14px; }
.step b { display: block; font-size: 15px; margin-bottom: 6px; }
.step span { color: var(--muted); font-size: 13.5px; }
.step::after { content: "→"; position: absolute; right: -14px; top: 28px; color: var(--primary); font-weight: 700; z-index: 1; }
.step:last-child::after { display: none; }

/* ===== Bảng chi phí ===== */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow-sm); }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; min-width: 720px; }
th, td { padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--primary-soft); color: var(--primary-deep); font-weight: 700; font-size: 13px; letter-spacing: .03em; text-transform: uppercase; }
tr:last-child td { border-bottom: 0; }
td b { color: var(--ink); }
td .ok { color: var(--primary); font-weight: 700; }
td .dim { color: var(--muted); }
.note { margin-top: 14px; font-size: 13.5px; color: var(--muted); }

/* ===== Vì sao chọn ===== */
.why { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.why-list { display: grid; gap: 18px; }
.why-item { display: flex; gap: 14px; }
.why-item .ico { width: 44px; height: 44px; flex: none; border-radius: 12px; display: grid; place-items: center; background: var(--primary-soft); color: var(--primary-dark); font-size: 20px; }
.why-item b { display: block; font-size: 16px; margin-bottom: 4px; }
.why-item span { color: var(--muted); font-size: 14.5px; }
.why-visual { position: relative; }
.why-visual .big { background: linear-gradient(160deg, var(--primary-soft), #fff); border: 1px solid var(--line); border-radius: 32px; padding: 40px; text-align: center; }
.why-visual .big img { width: 180px; margin: 0 auto 18px; }
.why-visual .big h3 { font-size: 22px; color: var(--primary-deep); }
.why-visual .big p { color: var(--muted); margin-top: 8px; }
.motto { display: flex; justify-content: center; gap: 18px; margin-top: 22px; }
.motto span { padding: 8px 16px; border-radius: 999px; background: #fff; border: 1px solid var(--line); font-weight: 600; color: var(--primary-dark); font-size: 14px; }

/* ===== Ứng dụng ===== */
.app-box { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; background: #fff; border: 1px solid var(--line); border-radius: 32px; padding: 56px; box-shadow: var(--shadow-sm); }
.app-box h2 { font-size: clamp(26px, 3vw, 36px); }
.app-box .lede { color: var(--muted); margin-top: 14px; font-size: 16.5px; }
.feat { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 24px; }
.feat li { display: flex; gap: 10px; font-size: 14.5px; align-items: flex-start; }
.feat li::before { content: "✓"; color: var(--primary); font-weight: 800; flex: none; }
.stores { display: flex; gap: 12px; margin-top: 26px; flex-wrap: wrap; align-items: center; }
.store { display: inline-flex; align-items: center; gap: 10px; background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 12px; font-size: 13px; line-height: 1.2; }
.store b { display: block; font-size: 15px; }
.store:hover { background: #000; }
.qr { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--muted); }
.qr img { width: 76px; height: 76px; border-radius: 10px; border: 1px solid var(--line); padding: 4px; background: #fff; }
.phone { position: relative; margin: 0 auto; width: 300px; height: 560px; border-radius: 44px; background: #0f1b14; padding: 12px; box-shadow: var(--shadow-lg); }
.phone .screen { width: 100%; height: 100%; border-radius: 34px; background: linear-gradient(180deg, var(--primary-deep), var(--primary-dark) 45%, var(--primary)); padding: 28px 20px; color: #fff; display: flex; flex-direction: column; gap: 14px; overflow: hidden; }
.phone .screen img { width: 64px; height: 64px; border-radius: 16px; }
.phone .screen h4 { font-size: 22px; }
.phone .screen p { font-size: 13px; color: rgba(255,255,255,.8); }
.bubble { background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.2); border-radius: 14px; padding: 10px 12px; font-size: 13px; }
.bubble.me { background: #fff; color: var(--ink); margin-left: 30px; }
.bubble .zh { font-size: 15px; font-weight: 600; display: block; }
.bubble .py { font-size: 11.5px; opacity: .75; }
.score { margin-top: auto; background: rgba(255,255,255,.14); border-radius: 14px; padding: 12px; display: flex; justify-content: space-between; align-items: center; font-size: 13px; }
.score b { font-size: 24px; color: var(--gold); }

/* ===== Đánh giá ===== */
.testi { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 26px; display: flex; flex-direction: column; gap: 14px; box-shadow: var(--shadow-sm); }
.testi .stars { color: var(--gold); letter-spacing: 2px; font-size: 15px; }
.testi p { color: var(--ink-2); font-size: 15px; }
.testi .who { display: flex; align-items: center; gap: 12px; margin-top: auto; }
.testi .av { width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; background: var(--primary-soft); color: var(--primary-dark); font-weight: 700; }
.testi .who b { display: block; font-size: 14.5px; }
.testi .who span { font-size: 13px; color: var(--muted); }

/* ===== FAQ ===== */
.faq { max-width: 820px; margin: 0 auto; display: grid; gap: 10px; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 4px 22px; }
.faq details[open] { border-color: rgba(31,144,83,.5); }
.faq summary { cursor: pointer; list-style: none; padding: 16px 0; font-weight: 600; font-size: 16px; display: flex; justify-content: space-between; gap: 14px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--primary); font-size: 22px; font-weight: 400; line-height: 1; }
.faq details[open] summary::after { content: "−"; }
.faq details p { color: var(--muted); padding: 0 0 18px; font-size: 15px; }

/* ===== Form tư vấn ===== */
.lead { background: linear-gradient(135deg, var(--primary-deep), var(--primary-dark) 60%, var(--primary)); color: #fff; border-radius: 32px; padding: 56px; display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; position: relative; overflow: hidden; }
.lead::before { content: "学而优 · 思而达"; position: absolute; left: 40px; bottom: 16px; font-size: 96px; font-weight: 800; opacity: .06; white-space: nowrap; font-family: "PingFang SC", "Hiragino Sans GB", serif; }
.lead h2 { font-size: clamp(26px, 3vw, 36px); }
.lead .lede { color: rgba(255,255,255,.8); margin-top: 14px; font-size: 16px; }
.lead-points { margin-top: 22px; display: grid; gap: 8px; font-size: 14.5px; }
.lead-points li::before { content: "✓  "; color: var(--gold); font-weight: 800; }
.lead-contact { margin-top: 26px; display: flex; gap: 12px; flex-wrap: wrap; }
.lead-contact a { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.2); border-radius: 12px; padding: 10px 14px; font-size: 14px; font-weight: 600; }
.lead-contact a:hover { background: rgba(255,255,255,.2); }
form.lead-form { background: #fff; color: var(--ink); border-radius: 22px; padding: 28px; display: grid; gap: 14px; box-shadow: var(--shadow-lg); position: relative; z-index: 1; }
form.lead-form h3 { font-size: 20px; }
form.lead-form .sub { font-size: 13.5px; color: var(--muted); margin-top: -8px; }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--ink-2); }
.field input, .field select, .field textarea { width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; font: inherit; font-size: 15px; background: #fff; color: var(--ink); }
.field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid rgba(31,144,83,.35); border-color: var(--primary); }
.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-msg { font-size: 13.5px; color: var(--primary-dark); min-height: 18px; }
.privacy { font-size: 12px; color: var(--muted); }

/* ===== Footer ===== */
footer { background: #0b1a11; color: rgba(255,255,255,.72); padding: 64px 0 28px; margin-top: 88px; }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.3fr; gap: 40px; }
.foot-brand .brand { color: #fff; }
.foot-brand .brand small { color: rgba(255,255,255,.5); }
.foot-brand p { margin-top: 16px; font-size: 14.5px; max-width: 360px; }
.foot h4 { color: #fff; font-size: 14px; letter-spacing: .06em; text-transform: uppercase; margin-bottom: 16px; }
.foot ul { display: grid; gap: 10px; font-size: 14.5px; }
.foot a:hover { color: #fff; }
.foot li { display: flex; gap: 8px; }
.socials { display: flex; gap: 10px; margin-top: 18px; }
.socials a { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; background: rgba(255,255,255,.08); font-size: 12px; font-weight: 700; color: #fff; }
.socials a:hover { background: var(--primary); }
.foot-bottom { border-top: 1px solid rgba(255,255,255,.1); margin-top: 44px; padding-top: 22px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13px; color: rgba(255,255,255,.5); }
.foot-bottom a { color: rgba(255,255,255,.7); }

/* ===== Nút Zalo nổi ===== */
.fab { position: fixed; right: 20px; bottom: 20px; z-index: 60; display: flex; flex-direction: column; gap: 10px; }
.fab a { display: flex; align-items: center; gap: 10px; background: var(--primary); color: #fff; padding: 12px 16px; border-radius: 999px; font-weight: 700; font-size: 14px; box-shadow: var(--shadow-lg); }
.fab a.zalo { background: #0068ff; }
.fab a:hover { transform: translateY(-2px); }

/* ===== Trang con ===== */
.page-hero { background: linear-gradient(180deg, var(--primary-tint), #fff); padding: 64px 0 40px; border-bottom: 1px solid var(--line); }
.page-hero h1 { font-size: clamp(30px, 4vw, 46px); font-weight: 800; }
.page-hero p { color: var(--muted); margin-top: 12px; font-size: 17px; max-width: 700px; }
.crumb { font-size: 13.5px; color: var(--muted); margin-bottom: 18px; }
.crumb a { color: var(--primary); font-weight: 600; }
.subnav { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 26px; }
.subnav a { padding: 8px 14px; border-radius: 999px; border: 1px solid var(--line); background: #fff; font-size: 14px; font-weight: 500; }
.subnav a:hover { border-color: var(--primary); color: var(--primary-dark); }
.section.tight { padding: 56px 0; }
.callout { background: #fff8e1; border: 1px solid #f5e3a1; border-radius: 14px; padding: 18px 20px; font-size: 14.5px; color: #5b4300; display: flex; gap: 12px; }
.callout b { color: #3d2e00; }

/* ===== Phương pháp học ===== */
.method { margin-top: 40px; background: linear-gradient(135deg, var(--primary-deep), var(--primary-dark) 70%, var(--primary)); color: #fff; border-radius: 28px; padding: 44px 48px; display: grid; grid-template-columns: 1.05fr 1fr; gap: 40px; align-items: center; }
.method .eyebrow { color: var(--gold); } .method .eyebrow::before { background: var(--gold); }
.method h3 { font-size: clamp(22px, 2.4vw, 30px); }
.method-copy p { margin-top: 14px; color: rgba(255,255,255,.82); font-size: 15.5px; }
.method-sched { margin-top: 18px; display: inline-block; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.22); border-radius: 12px; padding: 10px 14px; font-weight: 600; font-size: 14.5px; }
.method-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; counter-reset: st; }
.method-steps li { counter-increment: st; display: grid; grid-template-columns: 38px 1fr; gap: 12px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.14); border-radius: 14px; padding: 14px 16px; }
.method-steps li::before { content: counter(st); width: 38px; height: 38px; border-radius: 10px; background: var(--gold); color: #3d2e00; font-weight: 800; display: grid; place-items: center; grid-row: span 2; }
.method-steps b { display: block; font-size: 15px; }
.method-steps span { font-size: 13.5px; color: rgba(255,255,255,.8); }
.method-promise { grid-column: 1 / -1; background: rgba(255,255,255,.12); border-radius: 14px; padding: 14px 18px; font-size: 15px; text-align: center; }
@media (max-width: 1024px) { .method { grid-template-columns: 1fr; padding: 32px 24px; } }

/* ===== Popup khóa học ===== */
.modal { position: fixed; inset: 0; z-index: 100; display: flex; align-items: center; justify-content: center; padding: 20px; }
.modal[hidden] { display: none; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(13, 30, 20, .55); backdrop-filter: blur(3px); }
.modal-box { position: relative; background: #fff; border-radius: 22px; width: min(720px, 100%); max-height: calc(100vh - 40px); display: flex; flex-direction: column; box-shadow: var(--shadow-lg); animation: pop .22s ease; }
@keyframes pop { from { opacity: 0; transform: translateY(14px) scale(.98); } to { opacity: 1; transform: none; } }
.modal-x { position: absolute; top: 12px; right: 12px; width: 36px; height: 36px; border-radius: 50%; border: 0; background: var(--surface); font-size: 22px; line-height: 1; cursor: pointer; color: var(--ink-2); }
.modal-x:hover { background: var(--primary-soft); color: var(--primary-dark); }
.modal-head { padding: 26px 28px 18px; border-bottom: 1px solid var(--line); display: grid; gap: 8px; padding-right: 60px; }
.modal-head h3 { font-size: 21px; }
.modal-head .pill { justify-self: start; }
.modal-body { padding: 20px 28px; overflow-y: auto; display: grid; gap: 14px; }
.modal-body h4 { font-size: 15px; margin-top: 6px; color: var(--primary-deep); }
.modal-body .kv { font-size: 14.5px; }
.modal-body .kv b { text-align: left; }
.modal-body .kv div { grid-template-columns: 150px 1fr; display: grid; }
.tick { display: grid; gap: 7px; font-size: 14.5px; color: var(--ink-2); }
.tick li { display: flex; gap: 8px; }
.tick li::before { content: "✓"; color: var(--primary); font-weight: 800; flex: none; }
.modal-foot { padding: 16px 28px 22px; border-top: 1px solid var(--line); display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap; }
body.modal-open { overflow: hidden; }
@media (max-width: 760px) { .modal { padding: 0; align-items: flex-end; } .modal-box { border-radius: 22px 22px 0 0; max-height: 92vh; } .modal-head, .modal-body, .modal-foot { padding-left: 18px; padding-right: 18px; } .modal-body .kv div { grid-template-columns: 1fr; gap: 2px; } }

/* ===== Hiệu ứng xuất hiện ===== */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .tools, .grid-4, .scholar-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .step::after { display: none; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .hero-grid, .why, .app-box, .lead { grid-template-columns: 1fr; }
  .hero-visual { max-width: 520px; margin: 30px auto 0; }
  .phone { display: none; }
}
@media (max-width: 760px) {
  .section { padding: 64px 0; }
  .nav, .nav-cta { display: none; }
  .nav-toggle { display: block; }
  .topbar.open .nav { display: grid; position: absolute; top: 72px; left: 0; right: 0; background: #fff; padding: 12px 20px 20px; border-bottom: 1px solid var(--line); gap: 4px; }
  .topbar.open .nav a { padding: 12px 14px; }
  .tools, .grid-2, .grid-3, .grid-4, .scholar-grid, .feat, .row-2 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .scholar, .app-box, .lead { padding: 32px 22px; border-radius: 22px; }
  .lead::before, .scholar::after { display: none; }
  .foot-grid { grid-template-columns: 1fr; }
  .float-card { display: none; }
  .hero { padding-top: 40px; }
  .hero-trust { gap: 18px; }
  .fab a span { display: none; }
  .fab a { padding: 14px; }
}