/* K-Socrates Edu Lab — design tokens from DESIGN.md (concept v6) */
:root {
  --navy: #0F172A; --cobalt: #1E3A8A; --gold: #D97706; --sky: #2563EB; --sky-l: #38BDF8;
  --bg: #FFFFFF; --bg-sub: #F8FAFC; --bg-elev: #F1F5F9;
  --line: #E2E8F0; --line-strong: #CBD5E1; --muted: #64748B; --text: #0F172A;
  --r: 4px; --r-lg: 8px; --r-xl: 12px;
  --shadow: 0 10px 25px -5px rgba(15,23,42,.06), 0 8px 10px -6px rgba(15,23,42,.04);
  --font: Inter, "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", "Malgun Gothic", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg-sub); color: var(--text); font-family: var(--font);
  font-size: 16px; line-height: 1.65; letter-spacing: -0.005em; word-break: keep-all; }
a { color: inherit; text-decoration: none; }
.wrap { max-width: 1280px; margin: 0 auto; padding: 0 48px; }

/* language */
html[lang="ko"] .en, html[lang="en"] .ko { display: none !important; }

/* header */
.nav { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.85);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
.nav-in { display: flex; align-items: center; gap: 24px; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; white-space: nowrap; }
.mark { width: 34px; height: 34px; border-radius: var(--r); background: var(--navy); color: #fff;
  display: grid; place-items: center; font-weight: 800; }
.brand-text b { color: var(--cobalt); font-weight: 700; }
.menu { display: flex; gap: 22px; margin-left: auto; font-size: 14px; font-weight: 600; color: #334155; }
.menu a:hover { color: var(--cobalt); }
.nav-right { display: flex; align-items: center; gap: 12px; }
.lang { display: flex; border: 1px solid var(--line-strong); border-radius: var(--r); overflow: hidden; }
.lang button { border: 0; background: #fff; font: 600 12px var(--font); padding: 6px 9px; cursor: pointer; color: var(--muted); }
.lang button.on { background: var(--navy); color: #fff; }
.burger { display: none; border: 0; background: none; padding: 6px; cursor: pointer; }
.burger span { display: block; width: 20px; height: 2px; background: var(--navy); margin: 4px 0; }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px;
  padding: 0 20px; border-radius: var(--r); font-weight: 600; font-size: 15px; transition: .15s; text-align: center; }
.btn-sm { min-height: 36px; padding: 0 14px; font-size: 13px; }
.btn-gold { background: var(--gold); color: #fff; }
.btn-gold:hover { background: #B45309; }
.btn-navy { background: var(--navy); color: #fff; }
.btn-navy:hover { background: var(--cobalt); }
.btn-sky { background: var(--sky); color: #fff; }
.btn-sky:hover { background: var(--cobalt); }
.btn-ghost { border: 1px solid var(--line-strong); background: #fff; color: var(--navy); }
.btn-ghost:hover { background: var(--bg-elev); }
.btn-ghost svg { width: 18px; height: 18px; fill: var(--gold); }

/* hero */
.hero { background: linear-gradient(180deg, #fff 0%, var(--bg-sub) 100%); padding: 88px 0 56px; }
.eyebrow { display: inline-block; margin: 0 0 18px; padding: 4px 10px; border: 1px solid var(--line-strong);
  border-radius: var(--r); background: #fff; font-size: 12px; font-weight: 600; letter-spacing: .04em; color: var(--cobalt); }
.hero h1 { margin: 0 0 20px; font-size: 56px; line-height: 1.2; font-weight: 800; letter-spacing: -0.03em; }
.lead { max-width: 820px; margin: 0 0 10px; font-size: 20px; line-height: 1.7; color: #1E293B; }
.sub { max-width: 820px; margin: 0 0 28px; font-size: 15px; color: var(--muted); }
html[lang="en"] .lead { margin-bottom: 28px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* cards */
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 32px; transition: .2s; }
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.tracks { padding: 8px 0 40px; }
.track { display: flex; flex-direction: column; border-top-width: 4px; }
.track-a { border-top-color: var(--cobalt); }
.track-b { border-top-color: var(--sky-l); }
.track-tag { margin: 0 0 10px; font-size: 12px; font-weight: 700; letter-spacing: .06em; color: var(--muted); }
.track-a .track-tag { color: var(--cobalt); }
.track-b .track-tag { color: var(--sky); }
.track h2 { margin: 0 0 10px; font-size: 26px; line-height: 1.35; letter-spacing: -0.02em; }
.track > p { margin: 0 0 16px; color: #334155; }
.track ul { list-style: none; margin: 0 0 24px; padding: 0; flex: 1; }
.track li { position: relative; padding-left: 26px; margin: 8px 0; }
.track li::before { content: ""; position: absolute; left: 2px; top: 9px; width: 12px; height: 7px;
  border-left: 2px solid var(--gold); border-bottom: 2px solid var(--gold); transform: rotate(-45deg); }
.track .btn { align-self: flex-start; }

/* stats */
.stats { padding: 8px 0 24px; }
.stat { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 24px 28px; }
.stat strong { display: block; font-size: 44px; line-height: 1.1; font-weight: 800; letter-spacing: -0.03em; color: var(--navy); }
.stat strong em { font-style: normal; color: var(--gold); }
.stat span { color: var(--muted); font-size: 15px; }
.asof { margin: 10px auto 0; font-size: 12px; color: var(--muted); text-align: right; }
/* greeting */
.greeting { padding: 96px 0 24px; scroll-margin-top: 68px; }
.sec-tag { margin: 0 0 20px; font-size: 12px; font-weight: 700; letter-spacing: .06em; color: var(--cobalt); }
.greet-grid { display: grid; grid-template-columns: 320px 1fr; gap: 24px; align-items: start; }
.profile { text-align: center; position: sticky; top: 92px; }
.profile:hover, .letter:hover { transform: none; box-shadow: none; }
.profile img { width: 120px; height: 120px; border-radius: 50%; object-fit: cover; border: 2px solid var(--line); display: block; margin: 0 auto 16px; }
.profile h3 { margin: 0; font-size: 22px; letter-spacing: -0.01em; }
.role { margin: 2px 0 18px; font-size: 14px; color: var(--gold); font-weight: 600; }
.ch-link { display: flex; align-items: center; gap: 10px; margin-top: 16px; padding: 14px 12px 0; border-top: 1px solid var(--line); text-decoration: none; color: #334155; font-size: 13px; text-align: left; }
.ch-link svg { color: #dc2626; flex: none; }
.ch-link b { display: block; font-size: 15px; color: var(--cobalt); }
.ch-link:hover b { text-decoration: underline; }
.bio { list-style: none; margin: 0; padding: 16px 0 0; border-top: 1px solid var(--line); text-align: left; font-size: 14px; color: #334155; }
.bio li { padding: 4px 0 4px 14px; position: relative; line-height: 1.5; }
.bio li::before { content: ""; position: absolute; left: 0; top: 12px; width: 5px; height: 5px; background: var(--cobalt); border-radius: 50%; }
.letter { padding: 40px 48px; border-left: 4px solid var(--gold); }
.letter p { margin: 0 0 16px; font-size: 17px; line-height: 1.85; color: #1E293B; }
.letter .hello { font-size: 20px; font-weight: 700; color: var(--navy); margin-bottom: 20px; }
.letter .sign { margin: 28px 0 0; text-align: right; color: var(--muted); font-size: 15px; }
.letter .sign b { color: var(--navy); font-size: 18px; margin-left: 4px; }
@media (max-width: 900px) {
  .greet-grid { grid-template-columns: 1fr; }
  .profile { position: static; }
  .letter { padding: 28px 24px; }
  .letter p { font-size: 16px; }
}
/* why */
.why { padding: 96px 0 24px; scroll-margin-top: 68px; }
.sec-title { margin: 0 0 28px; font-size: 40px; line-height: 1.25; font-weight: 700; letter-spacing: -0.025em; }
.reality { display: flex; gap: 18px; align-items: flex-start; background: #FFF7ED; border: 1px solid #FED7AA;
  border-radius: var(--r-lg); padding: 24px 28px; margin-bottom: 24px; }
.reality svg { flex: none; width: 28px; height: 28px; fill: var(--gold); margin-top: 2px; }
.reality p { margin: 0; font-size: 17px; line-height: 1.75; color: #1E293B; }
.reality .r-tag { font-size: 13px; font-weight: 700; color: #B45309; margin-bottom: 4px; letter-spacing: .02em; }
.sol { position: relative; display: flex; flex-direction: column; }
.sol-no { position: absolute; top: 24px; right: 28px; font-size: 28px; font-weight: 800; color: var(--line-strong); }
.sol-ic { width: 40px; height: 40px; padding: 8px; border-radius: var(--r-lg); background: var(--bg-elev); fill: var(--cobalt); margin-bottom: 18px; }
.sol h3 { margin: 0 0 10px; font-size: 20px; line-height: 1.4; letter-spacing: -0.01em; }
.sol > p { margin: 0 0 16px; color: #334155; }
.chips { margin-top: auto !important; font-size: 13px; font-weight: 600; color: var(--cobalt) !important; }
@media (max-width: 767px) { .sec-title { font-size: 28px; } .reality { padding: 20px; } .reality p { font-size: 16px; } }
/* join */
.join { padding: 96px 0 24px; scroll-margin-top: 68px; }
.sec-lead { margin: -12px 0 28px; font-size: 17px; color: #334155; max-width: 760px; }
.steps { list-style: none; margin: 0 0 48px; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.step { display: flex; flex-direction: column; padding: 28px 24px; }
.step-no { font-size: 13px; font-weight: 800; color: #fff; background: var(--cobalt); border-radius: var(--r);
  width: 36px; height: 28px; display: grid; place-items: center; margin-bottom: 16px; }
.step h3 { margin: 0 0 8px; font-size: 18px; letter-spacing: -0.01em; }
.step > p { margin: 0 0 16px; font-size: 15px; color: #334155; }
.step-meta { margin-top: auto; font-size: 13px; font-weight: 700; color: var(--gold); }
.sub-title { margin: 0 0 16px; font-size: 22px; letter-spacing: -0.015em; }
.ways { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 48px; }
.way { background: #fff; border: 1px solid var(--line); border-left: 4px solid var(--gold); border-radius: var(--r-lg);
  padding: 18px 20px; font-size: 14px; color: var(--muted); }
.way b { display: block; font-size: 16px; color: var(--navy); margin-bottom: 4px; }
.faq { display: grid; gap: 10px; margin-bottom: 36px; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 0 24px; }
.faq summary { cursor: pointer; padding: 18px 0; font-weight: 600; font-size: 16px; list-style: none; position: relative; padding-right: 28px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 0; top: 14px; font-size: 22px; color: var(--cobalt); font-weight: 400; }
.faq details[open] summary::after { content: "−"; }
.faq details p { margin: 0 0 18px; color: #334155; }
.center { text-align: center; margin: 0; }
@media (max-width: 1023px) { .steps, .ways { grid-template-columns: 1fr 1fr; } }
@media (max-width: 767px) { .steps, .ways { grid-template-columns: 1fr; } .faq details { padding: 0 18px; } }
/* request */
.request { padding: 96px 0 24px; scroll-margin-top: 68px; }
.req-grid { display: grid; grid-template-columns: 5fr 7fr; gap: 32px; align-items: start; }
.req-info > p { margin: 0 0 24px; font-size: 17px; color: #334155; }
.req-info h3 { margin: 0 0 8px; font-size: 18px; }
.checks { list-style: none; margin: 0 0 28px; padding: 0; }
.checks li { position: relative; padding-left: 26px; margin: 8px 0; color: #334155; }
.checks li::before { content: ""; position: absolute; left: 2px; top: 9px; width: 12px; height: 7px;
  border-left: 2px solid var(--sky); border-bottom: 2px solid var(--sky); transform: rotate(-45deg); }
.mailbox { background: var(--bg-elev); border-radius: var(--r-lg); padding: 18px 22px; }
.mailbox p { margin: 0; font-size: 14px; color: var(--muted); }
.mailbox a { display: block; margin: 4px 0; font-size: 18px; font-weight: 700; color: var(--cobalt); }
.small { font-size: 13px !important; }
.form { display: grid; gap: 16px; border-top: 4px solid var(--sky-l); }
.form:hover { transform: none; box-shadow: none; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form label { display: block; font-size: 14px; font-weight: 600; color: var(--navy); }
.form input, .form textarea { font: 400 15px var(--font); color: var(--text); background: #fff; border: 1px solid var(--line-strong);
  border-radius: var(--r); padding: 0 14px; height: 44px; width: 100%; display: block; margin-top: 6px; }
.form textarea { height: auto; padding: 10px 14px; resize: vertical; }
.form input:focus, .form textarea:focus { outline: none; border-color: var(--cobalt); box-shadow: 0 0 0 3px rgba(30,58,138,.15); }
.form .agree { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; color: #334155; font-size: 13px; line-height: 1.6; }
.form .agree input { width: 18px; height: 18px; flex: none; margin-top: 2px; }
.form .btn { justify-self: start; border: 0; cursor: pointer; font-family: var(--font); }
.form-msg { margin: 0; font-size: 14px; min-height: 1.4em; }
.form-msg.ok { color: #047857; } .form-msg.err { color: #B91C1C; } .form-msg.info { color: var(--gold); }
.form .invalid { border-color: #DC2626; }
@media (max-width: 900px) { .req-grid, .row2 { grid-template-columns: 1fr; } .form .btn { justify-self: stretch; } }
/* projects */
.projects { padding: 96px 0 24px; scroll-margin-top: 68px; }
.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 28px; }
.sec-head .sec-title { margin: 0; }
.proj { padding: 0; overflow: hidden; display: flex; flex-direction: column; }
.thumb { display: block; position: relative; aspect-ratio: 16 / 9; background: var(--navy); overflow: hidden; }
.thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.proj:hover .thumb img { transform: scale(1.04); }
.badge { position: absolute; left: 16px; top: 16px; background: var(--gold); color: #fff; font-size: 12px; font-weight: 700;
  padding: 4px 10px; border-radius: var(--r); }
.badge-sky { background: var(--sky); }
.proj-body { padding: 28px 32px 32px; display: flex; flex-direction: column; flex: 1; }
.proj-body h3 { margin: 0 0 12px; font-size: 21px; line-height: 1.4; letter-spacing: -0.015em; }
.proj-body > p { margin: 0 0 20px; color: #334155; font-size: 15px; }
.series { list-style: none; margin: auto 0 0; padding: 0; display: grid; gap: 10px; }
.series a, .series .plain { display: flex; justify-content: space-between; align-items: center; gap: 12px;
  border: 1px solid var(--line); border-radius: var(--r); padding: 12px 16px; font-size: 14px; background: var(--bg-sub); }
.series a:hover { border-color: var(--cobalt); background: #fff; }
.series b { color: var(--navy); font-weight: 600; }
.series a > span, .series .plain > span { color: var(--cobalt); font-weight: 600; white-space: nowrap; font-size: 13px; }
.series .plain > span { color: var(--gold); }
@media (max-width: 767px) { .proj-body { padding: 22px; } .series a, .series .plain { flex-direction: column; align-items: flex-start; } .series a > span { white-space: normal; } }
/* lectures */
.lectures { padding: 96px 0 24px; scroll-margin-top: 68px; }
.vid { padding: 0; overflow: hidden; display: flex; flex-direction: column; }
.vthumb { position: relative; display: block; aspect-ratio: 16 / 9; background: var(--navy); overflow: hidden; }
.vthumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.vid:hover .vthumb img { transform: scale(1.04); }
.vthumb em { position: absolute; right: 10px; bottom: 10px; background: rgba(15,23,42,.8); color: #fff; font-style: normal;
  font-size: 12px; font-weight: 600; padding: 2px 6px; border-radius: var(--r); }
.vid .cat { margin: 18px 22px 6px; font-size: 12px; font-weight: 700; color: var(--cobalt); letter-spacing: .02em; }
.vid b { margin: 0 22px 10px; font-size: 17px; line-height: 1.45; color: var(--navy); display: -webkit-box; -webkit-line-clamp: 2;
  -webkit-box-orient: vertical; overflow: hidden; }
.vid .who { margin: auto 22px 20px; font-size: 13px; color: var(--muted); }
/* book */
.book { padding: 96px 0 24px; scroll-margin-top: 68px; }
.book-card { display: grid; grid-template-columns: 280px 1fr; gap: 48px; padding: 40px 48px; align-items: center;
  background: linear-gradient(135deg, #fff 60%, #EFF4FF); }
.book-card:hover { transform: none; }
.cover { position: relative; }
.cover img { width: 100%; border-radius: var(--r); box-shadow: 0 20px 40px -12px rgba(15,23,42,.35); display: block; }
.cover-note { position: absolute; left: 10px; top: 10px; background: rgba(15,23,42,.75); color: #fff; font-size: 11px; font-weight: 600; padding: 2px 8px; border-radius: var(--r); }
.status { display: inline-block; margin: 0 0 12px; padding: 3px 10px; border-radius: var(--r); background: #FFF7ED; color: #B45309; font-size: 12px; font-weight: 700; }
.book-body h2 { margin: 0; font-size: 34px; letter-spacing: -0.02em; }
.by { margin: 4px 0 18px; color: var(--muted); font-weight: 600; }
.book-body > p:not(.status):not(.by) { margin: 0 0 18px; font-size: 16px; color: #334155; }
.book-actions { display: flex; flex-wrap: wrap; gap: 12px; }
@media (max-width: 900px) { .book-card { grid-template-columns: 1fr; padding: 28px 24px; gap: 28px; } .cover { max-width: 220px; margin: 0 auto; } }
/* people */
.people { padding: 96px 0 24px; scroll-margin-top: 68px; }
.person { text-align: center; display: flex; flex-direction: column; }
.person:hover { transform: none; }
.avatar { width: 88px; height: 88px; border-radius: 50%; object-fit: cover; border: 2px solid var(--line); margin: 0 auto 14px; display: block; }
.initials { display: grid; place-items: center; background: var(--cobalt); color: #fff; font-weight: 800; font-size: 26px; }
.initials.anon { background: var(--bg-elev); color: var(--muted); }
.person h3 { margin: 0; font-size: 20px; }
.person .role { margin: 2px 0 12px; font-size: 14px; color: var(--gold); font-weight: 600; }
.tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; margin: 0 0 14px; }
.tags > span { background: var(--bg-elev); color: var(--cobalt); font-size: 12px; font-weight: 600; padding: 3px 8px; border-radius: var(--r); }
html[lang="ko"] .tags > .en, html[lang="en"] .tags > .ko { display: none !important; }
.person .bio { margin-bottom: 12px; }
.why { text-align: left; margin-top: auto; border-top: 1px solid var(--line); padding-top: 10px; }
.why summary { cursor: pointer; font-size: 14px; font-weight: 600; color: var(--cobalt); }
.why p { margin: 10px 0 0; font-size: 14px; color: #334155; line-height: 1.7; }
.person .note { margin: auto 0 0; font-size: 12px; color: var(--muted); }
.org-title { margin-top: 56px; }
.org { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 32px; display: grid; gap: 20px; }
.node { background: #fff; border: 1px solid var(--line-strong); border-left: 4px solid var(--navy); border-radius: var(--r);
  padding: 12px 16px; display: flex; flex-direction: column; gap: 2px; font-size: 13px; color: var(--muted); }
.node small { font-size: 11px; font-weight: 700; color: var(--muted); letter-spacing: .04em; }
.node b { color: var(--navy); font-size: 15px; }
.node.top { max-width: 360px; margin: 0 auto; text-align: center; border-left-color: var(--gold); width: 100%; }
.node.cob { border-left-color: var(--cobalt); } .node.sky { border-left-color: var(--sky-l); } .node.gold { border-left-color: var(--gold); }
.node.open { border-style: dashed; border-left: 1px dashed var(--line-strong); background: var(--bg-sub); }
.org-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; max-width: 760px; margin: 0 auto; width: 100%; }
.org-label { margin: 0 0 10px; font-weight: 700; font-size: 14px; color: var(--navy); }
.org-label em { font-style: normal; font-weight: 400; color: var(--muted); font-size: 12px; }
.org-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.org-grid.five { grid-template-columns: repeat(5, 1fr); }
@media (max-width: 1023px) { .org-grid, .org-grid.five { grid-template-columns: 1fr 1fr; } }
@media (max-width: 767px) { .org { padding: 20px; } .org-row, .org-grid, .org-grid.five { grid-template-columns: 1fr; } }
/* news */
.news { padding: 96px 0 24px; scroll-margin-top: 68px; }
.news-list { list-style: none; margin: 0; padding: 0; background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); }
.news-list li { display: grid; grid-template-columns: 110px 90px 1fr; gap: 16px; align-items: center; padding: 18px 24px; border-top: 1px solid var(--line); }
.news-list li:first-child { border-top: 0; }
.news-list time { font-size: 14px; font-weight: 600; color: var(--muted); font-variant-numeric: tabular-nums; }
.ntag { font-size: 12px; font-weight: 700; color: var(--cobalt); background: var(--bg-elev); padding: 3px 8px; border-radius: var(--r); justify-self: start; }
.news-list a, .news-list .nt { font-size: 16px; color: var(--navy); font-weight: 500; }
.news-list a:hover { color: var(--cobalt); text-decoration: underline; }
@media (max-width: 767px) { .news-list li { grid-template-columns: 1fr; gap: 6px; padding: 16px 18px; } }
/* apply */
.apply { padding: 96px 0 96px; scroll-margin-top: 68px; }
.apply-form { max-width: 860px; border-top-color: var(--gold); }
.ways-pick { border: 0; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 10px 20px; }
.ways-pick legend { font-size: 14px; font-weight: 600; color: var(--navy); margin-bottom: 8px; padding: 0; }
.form .ways-pick label { display: flex; align-items: center; gap: 8px; font-weight: 400; color: #334155; }
.form .ways-pick input { width: 18px; height: 18px; margin: 0; display: inline-block; }
.agree a { color: var(--cobalt); text-decoration: underline; }
/* footer */
.foot { background: var(--navy); color: #CBD5E1; padding: 56px 0 24px; scroll-margin-top: 68px; }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; }
.foot .brand { color: #fff; margin-bottom: 14px; }
.foot .mark { background: #fff; color: var(--navy); }
.foot .brand-text b { color: #93C5FD; }
.foot p { margin: 0; font-size: 14px; line-height: 1.7; max-width: 440px; }
.foot h4 { margin: 0 0 12px; color: #fff; font-size: 14px; }
.foot-grid > div > a:not(.brand) { display: block; font-size: 14px; margin: 6px 0; color: #CBD5E1; }
.foot-grid a:hover { color: #fff; }
.foot-bottom { display: flex; justify-content: space-between; margin-top: 40px; padding-top: 18px; border-top: 1px solid #1E293B; font-size: 12px; color: #94A3B8; }
@media (max-width: 767px) { .foot-grid { grid-template-columns: 1fr; gap: 24px; } .foot-bottom { flex-direction: column; gap: 6px; } }
.next { padding: 48px 0 96px; color: var(--muted); font-size: 14px; text-align: center; }

/* tablet */
@media (max-width: 1100px) {
  .menu { display: none; }
  .burger { display: block; }
  .menu.open { display: flex; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line); padding: 12px 32px 20px; gap: 14px; }
}
@media (max-width: 1023px) { .wrap { padding: 0 32px; } }
/* mobile */
@media (max-width: 767px) {
  .wrap { padding: 0 20px; }
  .menu.open { padding: 12px 20px 20px; }
  .brand-text { font-size: 15px; }
  .nav-right .btn-gold { display: none; }
  .hero { padding: 56px 0 40px; }
  .hero h1 { font-size: 36px; }
  .lead { font-size: 17px; }
  .grid2, .grid3 { grid-template-columns: 1fr; gap: 16px; }
  .card { padding: 24px; }
  .track h2 { font-size: 22px; }
  .track .btn { align-self: stretch; }
  .stat strong { font-size: 36px; }
}
.plan { margin: auto 0 10px !important; font-size: 13px !important; font-weight: 700; color: var(--cobalt) !important; }
.plan + .series { margin-top: 0; }
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grid4 .person { padding: 28px 22px; }
.initials.yan { background: var(--sky); }
@media (max-width: 1100px) { .grid4 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 767px) { .grid4 { grid-template-columns: 1fr; } }
.silhouette { display: grid; place-items: end center; background: #E2E8F0; overflow: hidden; }
.silhouette svg { width: 78%; height: 78%; fill: #111827; }