/* Shared styles for the parent guides (en|vn)/*.html linked from resources.html */
:root { --ink: #0F172A; --body: #475569; --muted: #94A3B8; --line: #E2E8F0; --soft: #F8FAFC; --primary: #193b92; --teal: #2C7A7B; }
* { box-sizing: border-box; }
body { margin: 0; background: #fff; color: var(--ink); font-family: 'Inter', system-ui, sans-serif; -webkit-font-smoothing: antialiased; }
a { color: var(--primary); }
.wrap { max-width: 640px; margin: 0 auto; padding: 0 20px; }
header { padding: 24px 0; }
header .wrap { display: flex; justify-content: space-between; align-items: center; }
.logo { font-weight: 800; font-size: 22px; text-decoration: none; letter-spacing: -0.02em; }
.logo .t1 { color: var(--primary); } .logo .t2 { color: #14B8A6; }
.lang { font-size: 14px; color: var(--body); text-decoration: none; }
.lang:hover { color: var(--primary); }

.eyebrow { font-size: 13px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin: 56px 0 16px; }
h1 { font-size: clamp(40px, 8vw, 56px); line-height: 1.05; letter-spacing: -0.03em; margin: 0 0 20px; font-weight: 800; }
h1 span { color: var(--primary); }
.lede { font-size: 20px; line-height: 1.55; color: var(--body); margin: 0; }

section { padding: 64px 0 0; }
h2 { font-size: 26px; line-height: 1.25; letter-spacing: -0.02em; margin: 0 0 16px; font-weight: 700; }
p { font-size: 17px; line-height: 1.75; color: var(--body); margin: 0 0 16px; }
p strong { color: var(--ink); font-weight: 600; }

.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 24px; }
.card { border: 1px solid var(--line); border-radius: 16px; padding: 20px; }
.card.make { border-color: var(--primary); background: #F5F7FD; }
.card h3 { margin: 0 0 12px; font-size: 15px; font-weight: 700; }
.card.make h3 { color: var(--primary); }
.card ul { margin: 0; padding: 0; list-style: none; }
.card li { font-size: 15px; line-height: 1.5; color: var(--body); padding: 8px 0; border-top: 1px solid var(--line); }
.card li:first-child { border-top: 0; padding-top: 0; }

.rows { margin-top: 24px; border-top: 1px solid var(--line); }
.row { padding: 20px 0; border-bottom: 1px solid var(--line); }
.row .does { font-size: 17px; font-weight: 600; color: var(--ink); margin: 0 0 6px; }
.row .learns { font-size: 16px; line-height: 1.65; color: var(--body); margin: 0; }
.row .term { display: inline-block; font-size: 12px; font-weight: 600; color: var(--primary); background: #EEF2FB; border-radius: 999px; padding: 2px 10px; margin-left: 6px; vertical-align: 2px; }

.steps { counter-reset: s; margin-top: 8px; }
.step { position: relative; padding: 24px 0 24px 56px; border-bottom: 1px solid var(--line); }
.step:last-child { border-bottom: 0; }
.step::before { counter-increment: s; content: counter(s); position: absolute; left: 0; top: 22px; width: 36px; height: 36px; border-radius: 50%; background: var(--primary); color: #fff; font-weight: 700; font-size: 16px; display: flex; align-items: center; justify-content: center; }
.step h3 { margin: 0 0 8px; font-size: 19px; font-weight: 700; }
.step p { margin: 0 0 8px; font-size: 16px; }
.say { display: block; font-size: 16px; color: var(--ink); background: var(--soft); border-left: 3px solid var(--primary); padding: 10px 14px; border-radius: 0 8px 8px 0; margin: 8px 0; }
.tools { margin: 12px 0 0; padding: 0; list-style: none; }
.tools li { font-size: 15px; color: var(--body); padding: 6px 0; }
.tools a { font-weight: 600; text-decoration: none; }

.close { padding: 72px 0 0; text-align: center; }
.close p.big { font-size: clamp(24px, 5vw, 30px); line-height: 1.3; color: var(--ink); font-weight: 700; letter-spacing: -0.02em; margin: 0 0 32px; }
.close p.small { font-size: 15px; color: var(--body); margin: 0; }
.close a { font-weight: 600; text-decoration: none; }

footer { margin-top: 80px; padding: 24px 0 40px; border-top: 1px solid var(--line); }
footer p { font-size: 13px; color: var(--muted); margin: 0; }
footer a { color: var(--muted); }

@media (max-width: 520px) {
  .pair { grid-template-columns: 1fr; }
  .lede { font-size: 18px; }
  .step { padding-left: 48px; }
}

.callout { font-size: clamp(20px, 4vw, 24px); line-height: 1.45; font-weight: 600; color: var(--ink); background: var(--soft); border-left: 4px solid var(--primary); border-radius: 0 12px 12px 0; padding: 20px 24px; margin: 8px 0 20px; }
.row .where { font-size: 15px; line-height: 1.6; color: var(--body); margin: 6px 0 0; }
.row .where b { color: var(--ink); font-weight: 600; }
.note { font-size: 15px; line-height: 1.65; color: var(--body); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; margin-top: 24px; }
.note b { color: var(--ink); }