/* Little Ant Math — site styles */
:root {
  --navy: #16336b;
  --navy-deep: #0f2550;
  --navy-soft: #e8eef8;
  --orange: #e8742a;
  --orange-deep: #c95c17;
  --orange-soft: #fdf0e6;
  --gold: #f4b53f;
  --ink: #1b2433;
  --muted: #5a6577;
  --line: #e4e0d8;
  --bg: #fbf9f5;
  --card: #ffffff;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(15, 37, 80, .06), 0 8px 24px rgba(15, 37, 80, .06);
  --wrap: 1140px;
  --font: "Plus Jakarta Sans", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--navy); }
a:hover { color: var(--orange-deep); }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .5em; color: var(--navy-deep); letter-spacing: -.01em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); font-weight: 800; }
h3 { font-size: 1.25rem; font-weight: 700; }
p { margin: 0 0 1em; }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; border-radius: 4px; }

/* Language switching: every bilingual pair is .en + .zh */
html[data-lang="en"] .zh, html[data-lang="zh"] .en { display: none !important; }
html[data-lang="zh"] body { letter-spacing: .01em; }
html[data-lang="zh"] h1 { font-size: clamp(2rem, 4.6vw, 3.2rem); }

.wrap { width: min(var(--wrap), 100% - 32px); margin-inline: auto; }
.section { padding: clamp(56px, 8vw, 96px) 0; }
.section-alt { background: #fff; border-block: 1px solid var(--line); }
.section-head { max-width: 720px; margin-bottom: 40px; }
.section-head.center { text-align: center; margin-inline: auto; }
.eyebrow {
  display: inline-block;
  font-size: .8rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  color: var(--orange-deep); margin-bottom: 10px;
}
html[data-lang="zh"] .eyebrow { letter-spacing: .08em; }
.lead { font-size: 1.15rem; color: var(--muted); }
.muted { color: var(--muted); }
.nowrap { white-space: nowrap; }
.small { font-size: .9rem; }
.skip { position: absolute; left: -999px; top: 8px; background: #fff; padding: 8px 12px; z-index: 100; }
.skip:focus { left: 8px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 24px; border-radius: 999px; border: 2px solid transparent;
  font: inherit; font-weight: 700; font-size: 1rem; line-height: 1.2;
  text-decoration: none; cursor: pointer; transition: background .15s, color .15s, border-color .15s, transform .15s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--orange); color: #fff; }
.btn-primary:hover { background: var(--orange-deep); color: #fff; }
.btn-outline { border-color: var(--navy); color: var(--navy); background: transparent; }
.btn-outline:hover { background: var(--navy); color: #fff; }
.btn-light { background: #fff; color: var(--navy-deep); }
.btn-light:hover { background: var(--orange-soft); color: var(--navy-deep); }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(251, 249, 245, .92); backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 20px; height: 72px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--navy-deep); }
.brand img { width: 44px; height: 44px; }
.brand-name { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name strong { font-size: 1.1rem; font-weight: 800; }
.brand-name span { font-size: .8rem; color: var(--muted); font-weight: 600; }
.nav { display: flex; gap: 4px; margin-left: auto; }
.nav a {
  padding: 8px 12px; border-radius: 999px; text-decoration: none; color: var(--ink);
  font-weight: 600; font-size: .95rem;
}
.nav a:hover, .nav a[aria-current="page"] { background: var(--navy-soft); color: var(--navy); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.lang-toggle {
  display: inline-flex; border: 1px solid var(--line); border-radius: 999px; background: #fff; padding: 3px;
}
.lang-toggle button {
  border: 0; background: transparent; font: inherit; font-size: .85rem; font-weight: 700;
  padding: 5px 10px; border-radius: 999px; cursor: pointer; color: var(--muted);
}
.lang-toggle button[aria-pressed="true"] { background: var(--navy); color: #fff; }
.header-actions .btn { padding: 9px 18px; font-size: .92rem; }
.menu-btn {
  display: none; border: 1px solid var(--line); background: #fff; border-radius: 10px;
  width: 42px; height: 42px; cursor: pointer; color: var(--navy-deep);
}
.menu-btn svg { margin: auto; }

@media (max-width: 960px) {
  .nav {
    position: absolute; top: 72px; left: 0; right: 0; flex-direction: column; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line); padding: 8px 16px 16px;
    display: none;
  }
  .nav.open { display: flex; }
  .nav a { padding: 12px; border-radius: 10px; }
  .menu-btn { display: grid; }
  .header-actions { margin-left: auto; }
  .header-actions .btn { display: none; }
}
.brand-name strong, .lang-toggle button { white-space: nowrap; }
@media (max-width: 480px) {
  .header-inner { gap: 10px; }
  .brand img { width: 38px; height: 38px; }
  .brand-name strong { font-size: 1rem; }
  .lang-toggle button { padding: 5px 8px; }
  .hero-art { width: min(240px, 70%); }
}
@media (max-width: 360px) {
  .brand-name span { display: none; }
}

/* Hero */
.hero { padding: clamp(40px, 7vw, 88px) 0 clamp(48px, 7vw, 80px); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.hero .tag {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; border-radius: 999px;
  background: var(--navy-soft); color: var(--navy); font-weight: 700; font-size: .88rem; margin-bottom: 20px;
}
.hero h1 .accent { color: var(--orange); }
.hero .lead { max-width: 560px; margin-bottom: 28px; }
.hero-art { position: relative; justify-self: center; width: min(440px, 100%); }
.hero-art::before {
  content: ""; position: absolute; inset: -6%; border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--orange-soft), transparent 60%), var(--navy-soft);
  z-index: -1;
}
.hero-art img { border-radius: 50%; box-shadow: 0 20px 50px rgba(15, 37, 80, .18); }
.chip {
  position: absolute; background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 8px 14px; font-weight: 700; color: var(--navy-deep); box-shadow: var(--shadow); font-size: .92rem;
  white-space: nowrap;
}
.chip-1 { top: 8%; left: -6%; }
.chip-2 { bottom: 10%; right: -4%; }
.chip b { color: var(--orange); }
.facts {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 56px;
  background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
}
.fact { background: #fff; padding: 18px 20px; }
.fact strong { display: block; font-size: 1.35rem; color: var(--navy-deep); line-height: 1.2; }
.fact > span { color: var(--muted); font-size: .9rem; }
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-art { width: min(320px, 80%); order: -1; }
  .facts { grid-template-columns: repeat(2, 1fr); }
  .chip-1 { left: -10%; }
}

/* Course cards */
.course-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; }
.course-card {
  grid-column: span 2; display: flex; flex-direction: column; background: var(--card);
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  text-decoration: none; color: inherit; transition: transform .2s, box-shadow .2s;
}
.course-card:nth-child(4), .course-card:nth-child(5) { grid-column: span 3; }
.course-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); color: inherit; }
.course-card img { aspect-ratio: 3 / 2; object-fit: cover; width: 100%; }
.course-card .body { padding: 20px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.course-card .num { font-size: .8rem; font-weight: 800; color: var(--orange-deep); letter-spacing: .1em; }
.course-card h3 { margin: 4px 0 8px; }
.course-card p { color: var(--muted); font-size: .97rem; margin-bottom: 14px; }
.course-card .more { margin-top: auto; font-weight: 700; color: var(--navy); font-size: .95rem; }
@media (max-width: 900px) {
  .course-grid { grid-template-columns: 1fr 1fr; }
  .course-card, .course-card:nth-child(4), .course-card:nth-child(5) { grid-column: span 1; }
}
@media (max-width: 580px) { .course-grid { grid-template-columns: 1fr; } }

/* Feature list */
.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.feature { padding: 26px 22px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); }
.feature .icon {
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: var(--orange-soft); color: var(--orange-deep); margin-bottom: 16px;
}
.feature p { color: var(--muted); font-size: .97rem; margin: 0; }
@media (max-width: 900px) { .features { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .features { grid-template-columns: 1fr; } }

.values { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; justify-content: center; }
.value {
  padding: 10px 18px; border-radius: 999px; background: var(--navy); color: #fff; font-weight: 600; font-size: .95rem;
}
.value b { color: var(--gold); margin-right: 6px; }

/* About */
.about-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 56px; align-items: start; }
.tutor-card {
  background: var(--navy); color: #dfe7f5; border-radius: var(--radius); padding: 32px; position: sticky; top: 96px;
}
.tutor-card h3 { color: #fff; }
.tutor-card .role { color: var(--gold); font-weight: 700; margin-bottom: 20px; }
.tutor-card dl { margin: 0; display: grid; gap: 14px; }
.tutor-card dt { font-size: .78rem; text-transform: uppercase; letter-spacing: .1em; color: #9fb2d6; font-weight: 700; }
.tutor-card dd { margin: 2px 0 0; color: #fff; font-weight: 600; }
.tutor-photo { position: relative; width: min(220px, 70%); margin-bottom: 22px; }
.tutor-photo picture img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; border-radius: 12px; border: 3px solid rgba(255,255,255,.18); }
.tutor-photo .badge {
  position: absolute; right: -18px; bottom: -14px; width: 56px; height: 56px; border-radius: 50%;
  border: 3px solid var(--navy); background: #fff;
}
.about-copy p { font-size: 1.05rem; }
.checks { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 10px; }
.checks li { position: relative; padding-left: 32px; }
.checks li::before {
  content: ""; position: absolute; left: 0; top: .3em; width: 20px; height: 20px; border-radius: 50%;
  background: var(--orange-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5.5 10.5l3 3 6-7' fill='none' stroke='%23c95c17' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/16px no-repeat;
}
@media (max-width: 860px) {
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .tutor-card { position: static; }
}

/* Process */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; list-style: none; padding: 0; margin: 0; }
.steps li {
  position: relative; padding: 28px 22px 24px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  counter-increment: step;
}
.steps li::before {
  content: counter(step, decimal-leading-zero); display: block; font-weight: 800; font-size: 1.6rem; color: var(--orange);
  margin-bottom: 8px;
}
.steps h3 { font-size: 1.1rem; }
.steps p { color: var(--muted); font-size: .95rem; margin: 0; }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }

/* Info tiles */
.tiles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.tile { background: var(--navy-soft); border-radius: var(--radius); padding: 22px; }
.tile h3 { font-size: 1rem; color: var(--navy); margin-bottom: 6px; }
.tile p { margin: 0; font-size: .95rem; }
@media (max-width: 900px) { .tiles { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .tiles { grid-template-columns: 1fr; } }

/* FAQ */
.faq { max-width: 820px; margin-inline: auto; display: grid; gap: 12px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-sm); }
.faq summary {
  cursor: pointer; list-style: none; padding: 18px 52px 18px 22px; font-weight: 700; position: relative; color: var(--navy-deep);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%);
  font-size: 1.5rem; font-weight: 500; color: var(--orange);
}
.faq details[open] summary::after { content: "–"; }
.faq .answer { padding: 0 22px 18px; color: var(--muted); }
.faq .answer p:last-child { margin: 0; }

/* CTA band */
.cta {
  background: var(--navy-deep); color: #dfe7f5; border-radius: 20px; padding: clamp(32px, 5vw, 56px);
  display: grid; grid-template-columns: 1.3fr 1fr; gap: 40px; align-items: center; position: relative; overflow: hidden;
}
.cta h2 { color: #fff; }
.cta .contact-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.cta .contact-list li { display: flex; gap: 12px; align-items: flex-start; }
.cta .contact-list svg { flex: none; margin-top: 3px; color: var(--gold); }
.cta .contact-list a { color: #fff; font-weight: 700; text-decoration: none; word-break: break-all; }
.cta .contact-list a:hover { text-decoration: underline; }
.cta .note { font-size: .88rem; color: #9fb2d6; margin: 18px 0 0; }
@media (max-width: 860px) { .cta { grid-template-columns: 1fr; } }

/* Page hero (inner pages) */
.page-hero { padding: clamp(40px, 6vw, 72px) 0 clamp(28px, 4vw, 40px); }
.page-hero .lead { max-width: 680px; }
.crumbs { font-size: .9rem; color: var(--muted); margin-bottom: 12px; }
.crumbs a { color: var(--muted); }

/* Course detail */
.course-nav { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.course-nav a {
  padding: 8px 16px; border-radius: 999px; background: #fff; border: 1px solid var(--line);
  text-decoration: none; font-weight: 600; font-size: .92rem; color: var(--navy);
}
.course-nav a:hover { border-color: var(--navy); }
.course-detail {
  display: grid; grid-template-columns: 380px 1fr; gap: 40px; padding: 40px 0; border-top: 1px solid var(--line);
  scroll-margin-top: 90px;
}
.course-detail:first-of-type { border-top: 0; }
.course-detail figure { margin: 0; }
.course-detail figure img { border-radius: var(--radius); aspect-ratio: 3 / 2; object-fit: cover; width: 100%; }
.course-detail .num { font-size: .85rem; font-weight: 800; color: var(--orange-deep); letter-spacing: .1em; }
.qa { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 20px 0; }
.qa div { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 14px 16px; }
.qa dt { font-size: .78rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; color: var(--orange-deep); margin-bottom: 4px; }
html[data-lang="zh"] .qa dt { letter-spacing: .04em; }
.qa dd { margin: 0; font-size: .97rem; }
.qa .wide { grid-column: 1 / -1; }
.qa ul { margin: 4px 0 0; padding-left: 18px; }
@media (max-width: 900px) {
  .course-detail { grid-template-columns: 1fr; gap: 20px; }
  .course-detail figure img { aspect-ratio: 16 / 7; }
}
@media (max-width: 560px) { .qa { grid-template-columns: 1fr; } }

/* Tables */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
table { width: 100%; border-collapse: collapse; font-size: .97rem; }
th, td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--navy-soft); color: var(--navy-deep); font-weight: 700; }
tr:last-child td { border-bottom: 0; }
td:first-child { font-weight: 700; color: var(--navy-deep); }
td:last-child { white-space: nowrap; }
@media (max-width: 640px) {
  thead { display: none; }
  table, tbody, tr, td { display: block; }
  tr { padding: 14px 16px; border-bottom: 1px solid var(--line); }
  tr:last-child { border-bottom: 0; }
  td { padding: 2px 0; border: 0; }
  td:last-child { color: var(--orange-deep); font-weight: 600; font-size: .9rem; }
}
.pill-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0; }
.pill { padding: 6px 14px; border-radius: 999px; background: var(--orange-soft); color: var(--orange-deep); font-weight: 700; font-size: .9rem; }

/* Policy cards (book page) */
.policy-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.policy { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.policy h3 { display: flex; align-items: center; gap: 10px; }
.policy h3 .badge { font-size: .75rem; padding: 3px 10px; border-radius: 999px; background: var(--navy-soft); color: var(--navy); }
.policy ul { margin: 0; padding-left: 20px; }
.policy li { margin-bottom: 6px; }
@media (max-width: 760px) { .policy-grid { grid-template-columns: 1fr; } }

/* Booking layout & form */
.book-grid { display: grid; grid-template-columns: 1fr 1.35fr; gap: 40px; align-items: start; }
.book-aside { position: sticky; top: 96px; display: grid; gap: 20px; }
@media (max-width: 960px) {
  .book-grid { grid-template-columns: 1fr; }
  .book-aside { position: static; }
}
.form-card { background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: clamp(22px, 4vw, 40px); box-shadow: var(--shadow); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 20px; }
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field.full { grid-column: 1 / -1; }
.field label, .field legend { font-weight: 700; font-size: .95rem; color: var(--navy-deep); padding: 0; }
.field .req { color: var(--orange-deep); }
.field .hint { font-size: .85rem; color: var(--muted); }
input[type="text"], input[type="email"], input[type="tel"], select, textarea {
  width: 100%; font: inherit; font-size: 1rem; padding: 12px 14px; border-radius: 10px;
  border: 1.5px solid #d6d1c6; background: #fff; color: var(--ink); transition: border-color .15s, box-shadow .15s;
}
textarea { min-height: 120px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--navy); box-shadow: 0 0 0 3px rgba(22, 51, 107, .15); }
input[aria-invalid="true"], select[aria-invalid="true"], textarea[aria-invalid="true"] { border-color: #c0392b; }
fieldset.field { border: 0; margin: 0; padding: 0; }
.choices { display: flex; flex-wrap: wrap; gap: 8px; }
.choice { position: relative; }
.choice input { position: absolute; opacity: 0; inset: 0; cursor: pointer; margin: 0; }
.choice > span {
  display: inline-block; padding: 9px 16px; border-radius: 999px; border: 1.5px solid #d6d1c6; background: #fff;
  font-weight: 600; font-size: .93rem; cursor: pointer; transition: all .15s;
}
.choice input:checked + span { background: var(--navy); border-color: var(--navy); color: #fff; }
.choice input:focus-visible + span { outline: 3px solid var(--gold); outline-offset: 2px; }
.consent { display: flex; gap: 12px; align-items: flex-start; font-size: .93rem; color: var(--muted); }
.consent input { width: 20px; height: 20px; margin-top: 3px; accent-color: var(--navy); flex: none; }
.hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; }
.notice {
  background: var(--orange-soft); border-left: 4px solid var(--orange); border-radius: 8px; padding: 14px 16px;
  font-size: .93rem; color: #6b3a12;
}
.form-error { color: #c0392b; font-weight: 600; font-size: .93rem; }
.form-status { display: none; border-radius: 14px; padding: 24px; }
.form-status.show { display: block; }
.form-status.ok { background: #eaf6ee; border: 1px solid #b8dfc4; }
.form-status.ok h3 { color: #1e6b3a; }
.form-status.warn { background: var(--orange-soft); border: 1px solid #f3c9a6; }

/* Prose (policies) */
.prose { max-width: 780px; }
.prose h2 { margin-top: 1.6em; font-size: 1.6rem; }
.prose h3 { margin-top: 1.4em; }
.prose ul { padding-left: 22px; }
.prose li { margin-bottom: 6px; }
.toc { display: flex; flex-wrap: wrap; gap: 8px; margin: 24px 0 8px; }

/* Footer */
.site-footer { background: var(--navy-deep); color: #9fb2d6; padding: 56px 0 28px; margin-top: 0; font-size: .95rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
.site-footer h4 { color: #fff; font-size: .95rem; margin-bottom: 12px; }
.site-footer a { color: #dfe7f5; text-decoration: none; }
.site-footer a:hover { color: var(--gold); }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.footer-brand { display: flex; gap: 12px; align-items: center; margin-bottom: 14px; }
.footer-brand img { width: 48px; height: 48px; }
.footer-brand strong { color: #fff; font-size: 1.1rem; display: block; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); margin-top: 40px; padding-top: 20px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-size: .85rem; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr; gap: 28px; } }

/* Mobile sticky booking bar */
.mobile-cta { display: none; }
@media (max-width: 760px) {
  .mobile-cta {
    display: flex; position: fixed; left: 0; right: 0; bottom: 0; z-index: 40; gap: 10px; padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
    background: rgba(255,255,255,.96); border-top: 1px solid var(--line); backdrop-filter: blur(8px);
  }
  .mobile-cta .btn { flex: 1; padding: 11px 12px; font-size: .95rem; }
  body.has-mobile-cta { padding-bottom: 72px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}
@media print {
  .site-header, .mobile-cta, .site-footer, .btn { display: none !important; }
}

/* ---- v2: trust line, course finder, pathway, puzzles, reveal ---- */
.trust { list-style: none; padding: 0; margin: 22px 0 0; display: flex; flex-wrap: wrap; gap: 8px 20px; font-size: .92rem; color: var(--muted); font-weight: 600; }
.trust li { display: flex; align-items: center; gap: 7px; }
.trust li::before {
  content: ""; width: 18px; height: 18px; border-radius: 50%; flex: none;
  background: var(--orange-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5.5 10.5l3 3 6-7' fill='none' stroke='%23c95c17' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/14px no-repeat;
}

.finder-band { padding: 0 0 clamp(48px, 7vw, 80px); }
.finder {
  display: grid; grid-template-columns: 1fr 1.1fr 1fr; gap: 28px; align-items: start;
  background: var(--navy-deep); color: #dfe7f5; border-radius: 20px; padding: clamp(24px, 4vw, 40px);
  position: relative; overflow: hidden;
}
.finder::after {
  content: ""; position: absolute; right: -60px; top: -60px; width: 220px; height: 220px; border-radius: 50%;
  background: radial-gradient(circle, rgba(232,116,42,.35), transparent 70%); pointer-events: none;
}
.finder h2 { color: #fff; font-size: clamp(1.4rem, 2.4vw, 1.8rem); }
.finder .eyebrow { color: var(--gold); }
.finder-intro p { margin: 0; }
.finder-form { display: grid; gap: 16px; }
.finder .field label, .finder .field legend { color: #fff; }
.finder select { border-color: transparent; }
.finder .choice > span { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.25); color: #fff; font-size: .88rem; padding: 8px 14px; }
.finder .choice input:checked + span { background: var(--orange); border-color: var(--orange); }
.finder-result {
  background: #fff; color: var(--ink); border-radius: var(--radius); padding: 22px; min-height: 100%;
  position: relative; z-index: 1;
}
.finder-empty { color: var(--muted); margin: 0; display: flex; align-items: center; min-height: 140px; }
.finder-result .rec-label { font-size: .78rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; color: var(--orange-deep); }
.finder-result h3 { margin: 4px 0 8px; font-size: 1.3rem; }
.finder-result p { color: var(--muted); font-size: .95rem; margin-bottom: 12px; }
.finder-result .pill-row { margin: 0 0 16px; }
.finder-result .pill { font-size: .82rem; }
.finder-result .btn-row .btn { padding: 10px 18px; font-size: .92rem; }
.finder-result.pop { animation: pop .35s ease; }
@keyframes pop { from { transform: scale(.97); opacity: .4; } to { transform: none; opacity: 1; } }
@media (max-width: 960px) { .finder { grid-template-columns: 1fr; } .finder-empty { min-height: 0; } }

.stairs { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; align-items: end; }
.stair {
  position: relative; background: var(--card); border: 1px solid var(--line); border-top: 4px solid var(--orange);
  border-radius: var(--radius); padding: 22px 20px; min-height: calc(150px + var(--h) * 38px);
  display: flex; flex-direction: column; justify-content: flex-end;
}
.stair:nth-child(2) { border-top-color: var(--gold); }
.stair:nth-child(3) { border-top-color: #3d6fc2; }
.stair:nth-child(4) { border-top-color: var(--navy); background: var(--navy-soft); }
.stair-years { font-size: .8rem; font-weight: 800; color: var(--orange-deep); letter-spacing: .04em; }
.stair h3 { font-size: 1.1rem; margin: 4px 0 6px; }
.stair p { margin: 0; color: var(--muted); font-size: .93rem; }
.stair-ant { position: absolute; top: -34px; right: 16px; width: 64px; height: 64px; border-radius: 50%; border: 3px solid #fff; box-shadow: var(--shadow); }
.side-tracks { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 14px; }
.track {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 12px; padding: 16px 20px; border-radius: var(--radius);
  border: 1.5px dashed #c9c2b4; text-decoration: none; color: var(--muted); font-size: .93rem; background: #fff;
}
.track b { color: var(--navy-deep); font-size: 1rem; }
.track:hover { border-color: var(--orange); color: var(--muted); }
@media (max-width: 900px) {
  .stairs { grid-template-columns: 1fr 1fr; }
  .stair { min-height: 0; }
}
@media (max-width: 560px) {
  .stairs, .side-tracks { grid-template-columns: 1fr; }
  .stair { margin-left: calc((var(--h) - 1) * 12px); }
}

.puzzles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.puzzle { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; display: flex; flex-direction: column; }
.puzzle .level { align-self: flex-start; font-size: .78rem; font-weight: 800; padding: 4px 10px; border-radius: 999px; background: var(--navy-soft); color: var(--navy); margin-bottom: 12px; }
.puzzle p { font-size: .97rem; }
.puzzle details { border-top: 1px solid var(--line); padding: 10px 0 0; margin-top: 10px; }
.puzzle details:first-of-type { margin-top: auto; }
.puzzle summary { cursor: pointer; font-weight: 700; color: var(--navy); list-style: none; display: flex; align-items: center; gap: 8px; }
.puzzle summary::-webkit-details-marker { display: none; }
.puzzle summary::before { content: "+"; display: inline-grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--navy-soft); font-size: .95rem; }
.puzzle details[open] summary::before { content: "–"; }
.puzzle details.answer summary { color: var(--orange-deep); }
.puzzle details.answer summary::before { background: var(--orange-soft); }
.puzzle details p { margin: 10px 0 0; color: var(--ink); }
.center-cta { text-align: center; margin: 32px 0 0; }
@media (max-width: 900px) { .puzzles { grid-template-columns: 1fr; } }

/* Gentle reveal on scroll (only when JS is running) */
html.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
html.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { html.js .reveal { opacity: 1; transform: none; } }