:root {
  --ink:#082f49;
  --text:#354f62;
  --muted:#536675;
  --teal:#087b88;
  --teal-dark:#075766;
  --accent:#43d4df;
  --accent-hover:#66e1e9;
  --mint:#e1f8fb;
  --paper:#fff;
  --bg:#fff;
  --line:#d7e6ed;
  --warm:#ffce75;
  --warm-soft:#fff3d8;
  --radius:20px;
  --page: min(1160px,calc(100% - 96px));
  font-synthesis:none
}
* {
  box-sizing:border-box
}
html {
  scroll-behavior:smooth;
  scroll-padding-top:110px
}
body {
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Avenir Next",Avenir,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased
}
img,svg {
  max-width:100%;
  display:block
}
a {
  color:inherit
}
button,input,select,textarea {
  font:inherit
}
button,a,input,select,textarea,summary {
  -webkit-tap-highlight-color:transparent
}
button,a {
  touch-action:manipulation
}
h1,h2,h3,p {
  margin:0
}
h1,h2,h3 {
  color:var(--ink);
  line-height:1.15;
  letter-spacing:-.035em;
  font-weight:700
}
h1 {
  font-size:clamp(2.5rem,4.55vw,3.8rem)
}
h2 {
  font-size:clamp(1.9rem,3vw,2.55rem)
}
h3 {
  font-size:1.2rem;
  letter-spacing:-.015em
}
p {
  overflow-wrap:break-word
}
[hidden] {
  display:none!important
}
:focus-visible {
  outline:3px solid var(--teal-dark);
  outline-offset:5px
}
.section-prices :focus-visible {
  outline-color:var(--warm)
}
[id] {
  scroll-margin-top:105px
}
.skip-link {
  position:fixed;
  z-index:200;
  top:12px;
  left:12px;
  padding:12px 18px;
  background:var(--ink);
  color:#fff;
  border-radius:8px;
  transform:translateY(-160%)
}
.skip-link:focus {
  transform:none
}
.site-header {
  position:sticky;
  top:0;
  z-index:40;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line)
}
.header-inner {
  width:var(--page);
  margin:auto;
  min-height:86px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px
}
.brand {
  display:block;
  flex-shrink:0
}
.brand-logo {
  width:112px;
  height:auto
}
.main-nav {
  display:flex;
  gap:27px;
  align-items:center
}
.main-nav a {
  text-decoration:none;
  font-size:.9rem;
  font-weight:600;
  white-space:nowrap
}
.main-nav a:hover {
  color:var(--teal)
}
.main-nav .nav-cta {
  background:var(--accent);
  color:var(--ink);
  border-radius:10px;
  padding:11px 17px
}
.main-nav .nav-cta:hover {
  background:var(--accent-hover);
  color:var(--ink)
}
.nav-toggle {
  display:none
}
.button-row {
  display:flex;
  align-items:center;
  gap:22px;
  flex-wrap:wrap;
  margin-top:28px
}
.button {
  min-height:48px;
  display:inline-flex;
  justify-content:center;
  align-items:center;
  gap:12px;
  border:1px solid transparent;
  border-radius:10px;
  padding:13px 21px;
  text-decoration:none;
  cursor:pointer;
  font-weight:650;
  font-size:.95rem;
  line-height:1.4;
  transition:background .18s,transform .18s,box-shadow .18s
}
.button:hover {
  transform:translateY(-2px)
}
.button:active {
  transform:translateY(0)
}
.button-primary,.button-whatsapp {
  background:var(--accent);
  color:var(--ink);
  box-shadow:0 4px 0 rgba(8,47,73,.12)
}
.button-primary:hover,.button-whatsapp:hover {
  background:var(--accent-hover);
  box-shadow:0 6px 18px rgba(8,47,73,.16)
}
.button-secondary {
  border-color:var(--line);
  background:var(--paper);
  color:var(--ink)
}
.button-secondary:hover {
  border-color:var(--teal)
}
.text-link {
  color:var(--teal);
  font-weight:650;
  text-decoration:underline;
  text-decoration-thickness:1px;
  text-underline-offset:5px;
  font-size:.92rem
}
.text-link:hover {
  text-decoration-thickness:2px
}
.eyebrow,.section-label {
  color:var(--teal);
  font-size:.73rem;
  font-weight:700;
  letter-spacing:.115em;
  text-transform:uppercase;
  margin-bottom:14px
}
.eyebrow {
  display:flex;
  align-items:center;
  gap:9px
}
.eyebrow-dot,.lesson-dot {
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--teal);
  display:inline-block;
  flex-shrink:0
}
.hero {
  width:var(--page);
  margin:0 auto;
  display:grid;
  grid-template-columns:1.18fr 1fr;
  gap:60px;
  align-items:center;
  padding:66px 0 50px
}
.hero h1 span {
  color:var(--teal)
}
.home-page main {
  background:radial-gradient(ellipse 640px 460px at 88% 290px,#dcf7fb,transparent)
}
.hero-text {
  font-size:1.07rem;
  max-width:550px;
  margin-top:25px;
  line-height:1.8
}
.audience {
  font-size:.84rem;
  color:var(--muted);
  margin-top:14px
}
.hero-note {
  font-size:.79rem;
  color:var(--muted);
  margin-top:22px;
  line-height:1.6
}
.hero-note span {
  padding:0 4px
}
.hero-rating {
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:3px 13px;
  width:fit-content;
  max-width:100%;
  min-height:44px;
  margin-top:19px;
  padding:9px 13px;
  border:1px solid #e7d1a7;
  border-radius:10px;
  background:var(--warm-soft);
  color:var(--ink);
  font-size:.78rem;
  line-height:1.6;
  text-decoration:none;
  transition:background .18s,border-color .18s
}
.hero-rating:hover {
  background:#ffebc1;
  border-color:#a57524
}
.hero-rating-score {
  display:inline-flex;
  align-items:center;
  gap:9px;
  white-space:nowrap
}
.rating-stars {
  color:#8c5b0a;
  letter-spacing:1px;
  font-size:.87rem
}
.hero-rating-label {
  display:inline-flex;
  align-items:center;
  gap:8px
}
.hero-rating:hover .hero-rating-label {
  text-decoration:underline;
  text-underline-offset:3px
}
.hero-rating+.button-row {
  margin-top:19px
}
.lesson-preview {
  padding:28px;
  background:#fff;
  border:1px solid #bce4ec;
  border-radius:var(--radius);
  box-shadow:0 20px 60px rgba(8,47,73,.09);
  position:relative;
  transform:rotate(1deg);
  animation:card-enter .6s ease-out both
}
.lesson-topline {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:10px;
  border-bottom:1px solid var(--line);
  padding-bottom:17px;
  margin-bottom:22px
}
.lesson-tag {
  font-size:.74rem;
  font-weight:650;
  color:var(--ink);
  background:var(--warm-soft);
  border-radius:6px;
  padding:5px 9px
}
.lesson-dot {
  background:var(--accent);
  width:7px;
  height:7px
}
.example-subject {
  font-size:.68rem;
  letter-spacing:.085em;
  text-transform:uppercase;
  color:var(--teal);
  font-weight:650;
  margin-bottom:8px
}
.lesson-preview h2 {
  font-size:1.45rem
}
.equation {
  font-family:"Avenir Next",ui-sans-serif,system-ui,sans-serif;
  color:var(--ink);
  font-size:2.1rem;
  font-weight:650;
  letter-spacing:.015em;
  text-align:center;
  margin:24px 0 18px
}
.example-quiz {
  margin:0;
  padding:0;
  border:0;
  min-width:0
}
.example-quiz legend {
  font-size:.82rem;
  text-align:center;
  width:100%;
  color:var(--text);
  margin-bottom:13px
}
.quiz-options {
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:10px
}
.quiz-answer {
  min-height:49px;
  padding:10px 5px;
  border:1px solid #a9e1e9;
  background:var(--mint);
  border-radius:8px;
  color:var(--ink);
  font-weight:700;
  font-size:1.03rem;
  white-space:nowrap;
  cursor:pointer;
  transition:background .18s,border-color .18s,box-shadow .18s
}
.quiz-answer:not([data-answer-state]):hover:enabled {
  background:#c4f0f4;
  border-color:var(--teal)
}
.quiz-answer:disabled {
  cursor:default
}
.quiz-answer[data-answer-state="correct"] {
  background:var(--accent);
  border-color:var(--teal-dark);
  box-shadow:inset 0 0 0 1px var(--teal-dark)
}
.quiz-answer[data-answer-state="incorrect"] {
  background:var(--warm-soft);
  border-color:#9b6a17;
  box-shadow:inset 0 0 0 1px #9b6a17
}
.quiz-answer[data-answer-state="correct"]::after {
  content:" ✓"
}
.quiz-answer[data-answer-state="incorrect"]::after {
  content:" ×"
}
.quiz-feedback {
  margin-top:13px;
  padding:11px 13px;
  border-radius:8px;
  font-size:.81rem;
  line-height:1.65;
  color:var(--ink);
  background:var(--warm-soft)
}
.quiz-feedback[data-result="correct"] {
  background:var(--mint)
}
.quiz-fallback {
  margin-top:12px;
  font-size:.77rem;
  color:var(--muted)
}
.example-hint {
  font-size:.88rem;
  line-height:1.65;
  margin-top:18px
}
.example-solution {
  margin-top:20px;
  border-top:1px solid var(--line)
}
.example-solution summary {
  list-style:none;
  cursor:pointer;
  color:var(--teal);
  font-size:.9rem;
  font-weight:650;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:14px 0 4px;
  min-height:48px
}
.example-solution summary::-webkit-details-marker {
  display:none
}
.example-solution summary>span {
  font-size:1.4rem;
  line-height:1;
  transition:transform .2s
}
.example-solution[open] summary>span {
  transform:rotate(45deg)
}
.example-solution ol {
  padding:0;
  list-style:none;
  margin:12px 0
}
.example-solution li {
  padding:10px 0;
  display:grid;
  gap:2px;
  border-bottom:1px solid var(--line);
  font-size:.82rem
}
.example-solution li strong {
  color:var(--ink);
  font-size:1rem
}
.example-solution>p {
  font-size:.83rem
}
.example-caption {
  font-size:.69rem;
  line-height:1.55;
  color:var(--muted);
  margin-top:16px
}
.reviews-section {
  width:var(--page);
  margin:0 auto;
  display:grid;
  grid-template-columns:minmax(250px,.8fr) minmax(0,1.4fr);
  border:1px solid var(--ink);
  border-radius:var(--radius);
  background:var(--ink);
  color:#dcebf3;
  overflow:hidden
}
.reviews-summary {
  padding:36px;
  background:#103c56;
  text-align:center
}
.reviews-source {
  font-size:.75rem;
  font-weight:650;
  letter-spacing:.07em;
  text-transform:uppercase
}
.reviews-score {
  display:flex;
  justify-content:center;
  align-items:baseline;
  gap:10px;
  margin-top:15px;
  line-height:1
}
.reviews-score strong {
  color:white;
  font-size:5rem;
  letter-spacing:-.06em;
  font-variant-numeric:tabular-nums
}
.reviews-score>span {
  font-size:1rem;
  white-space:nowrap
}
.reviews-stars {
  color:var(--warm);
  font-size:1.6rem;
  letter-spacing:4px;
  margin-top:12px;
  line-height:1.3
}
.reviews-count {
  margin-top:8px;
  font-size:.9rem
}
.reviews-count strong {
  color:white
}
.reviews-experience {
  display:flex;
  align-items:center;
  justify-content:center;
  gap:13px;
  margin-top:24px;
  padding-top:20px;
  border-top:1px solid #426277;
  text-align:left
}
.reviews-experience>strong {
  font-size:2rem;
  line-height:1;
  color:var(--accent);
  letter-spacing:-.03em
}
.reviews-experience>span {
  font-size:.76rem;
  line-height:1.5
}
.reviews-details {
  align-self:center;
  padding:36px 42px
}
.reviews-details .section-label {
  color:var(--accent)
}
.reviews-details h2 {
  color:white;
  font-size:clamp(1.8rem,2.8vw,2.3rem)
}
.reviews-details>p:not([class]) {
  margin-top:17px;
  max-width:490px;
  font-size:.95rem
}
.reviews-details>.button {
  margin-top:23px
}
.reviews-date {
  max-width:460px;
  margin-top:18px;
  font-size:.72rem;
  line-height:1.7;
  color:#bcd2df
}
.reviews-date a {
  text-underline-offset:3px
}
.reviews-date a:hover {
  color:white
}
.reviews-section :focus-visible {
  outline-color:var(--warm)
}
.section {
  width:var(--page);
  margin:0 auto;
  padding:65px 0
}
.section-heading {
  max-width:750px;
  margin-bottom:30px
}
.section-heading>p:not(.section-label) {
  margin-top:15px;
  font-size:.97rem
}
.split-heading {
  max-width:none;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:50px;
  align-items:end
}
.split-heading>p {
  max-width:460px;
  font-size:.9rem
}
.subject-list {
  border-top:1px solid var(--line)
}
.subject-row {
  display:grid;
  grid-template-columns:52px 1fr minmax(190px,1.05fr) 32px;
  gap:20px;
  align-items:center;
  border-bottom:1px solid var(--line);
  padding:20px 6px;
  text-decoration:none;
  transition:background .18s,padding .18s
}
.subject-row:hover {
  background:#f0fbfd;
  padding-left:12px
}
.subject-mark {
  display:grid;
  place-items:center;
  width:46px;
  height:46px;
  border-radius:10px;
  background:var(--mint);
  font-weight:700;
  color:var(--teal-dark);
  font-size:1.1rem
}
.subject-row h3 {
  font-size:1.06rem
}
.subject-row:nth-child(2) .subject-mark,
.subject-row:nth-child(5) .subject-mark {
  background:var(--warm-soft);
  color:var(--ink)
}
.subject-level {
  display:block;
  font-size:.75rem;
  color:var(--muted);
  margin-top:4px;
  line-height:1.5
}
.subject-row>p {
  font-size:.83rem;
  line-height:1.55;
  color:var(--muted)
}
.subject-arrow {
  font-size:1.15rem;
  color:var(--teal);
  text-align:center
}
.section-footnote {
  font-size:.83rem;
  margin-top:18px
}
.section-footnote a {
  font-size:inherit
}
.about-section {
  background:linear-gradient(115deg,var(--mint),#f0fbff);
  border-radius:var(--radius);
  padding:40px;
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:65px
}
.about-intro h2 {
  font-size:2.05rem
}
.about-intro>p:last-child,.about-method>p {
  margin-top:19px;
  font-size:.9rem
}
.about-method {
  padding:6px 0 0;
  border-left:1px solid #b9e0e8;
  padding-left:36px
}
.check-list {
  list-style:none;
  padding:0;
  margin:20px 0 0
}
.check-list li {
  position:relative;
  padding-left:24px;
  margin-top:9px;
  font-size:.83rem
}
.check-list li::before {
  content:"✓";
  position:absolute;
  left:0;
  color:var(--teal);
  font-weight:700
}
.steps {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:35px
}
.step-card {
  border-top:1px solid var(--line);
  padding-top:20px
}
.step-number {
  display:block;
  color:var(--teal);
  font-size:.75rem;
  letter-spacing:.1em;
  font-weight:700;
  margin-bottom:12px
}
.step-card h3 {
  font-size:1.04rem
}
.step-card p {
  font-size:.85rem;
  line-height:1.7;
  margin-top:12px
}
.process-note {
  font-size:.77rem;
  color:var(--muted);
  margin-top:23px;
  max-width:850px
}
.section-prices {
  width:100%;
  padding:62px max(48px,calc((100% - 1160px)/2));
  background:linear-gradient(125deg,var(--ink),#0b3b53);
  color:#d4e7f1
}
.section-prices h2 {
  color:white
}
.section-prices .section-label {
  color:var(--accent)
}
.section-prices .section-heading {
  margin-bottom:32px
}
.price-grid {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px
}
.price-card {
  display:flex;
  flex-direction:column;
  position:relative;
  background:#fff;
  padding:29px 24px 24px;
  border:1px solid #fff;
  border-radius:15px;
  color:var(--text)
}
.price-card.featured {
  background:#fff9ec;
  border-color:var(--warm)
}
.price-card h3 {
  font-size:1.08rem
}
.price-description {
  font-size:.8rem;
  line-height:1.6;
  margin-top:8px;
  min-height:42px
}
.price-per {
  margin-top:21px;
  color:var(--ink)
}
.price-per strong {
  font-size:2.45rem;
  letter-spacing:-.055em;
  font-weight:700;
  line-height:1.1
}
.price-per span {
  font-size:1.2rem;
  margin-left:4px
}
.price-unit {
  font-size:.77rem;
  color:var(--muted)
}
.price-total {
  padding-top:16px;
  margin-top:19px;
  border-top:1px solid var(--line);
  font-size:.9rem;
  font-weight:650;
  color:var(--ink)
}
.price-count {
  font-size:.78rem;
  margin-top:2px
}
.price-card .button {
  margin-top:24px;
  padding:10px 12px;
  font-size:.84rem;
  min-height:43px
}
.price-badge {
  display:inline-block;
  position:absolute;
  top:-11px;
  right:16px;
  background:var(--warm);
  color:#433513;
  font-size:.62rem;
  letter-spacing:.045em;
  text-transform:uppercase;
  padding:4px 9px;
  border-radius:5px;
  font-weight:700
}
.credit-note {
  display:grid;
  grid-template-columns:1fr 2fr;
  gap:35px;
  margin-top:29px;
  font-size:.8rem;
  line-height:1.7
}
.credit-note>strong {
  color:white;
  font-size:.9rem
}
.booking-section {
  display:grid;
  grid-template-columns:1fr 1.05fr;
  gap:75px;
  align-items:start
}
.booking-copy>p:not(.section-label) {
  margin-top:19px;
  font-size:.93rem
}
.booking-copy>.button {
  margin-top:25px
}
.booking-copy .contact-alternative {
  font-size:.79rem
}
.contact-alternative a {
  color:var(--teal);
  text-underline-offset:3px;
  overflow-wrap:anywhere
}
.booking-copy .contact-expectation {
  font-size:.8rem;
  color:var(--muted);
  max-width:400px
}
.booking-panel {
  padding:28px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--paper)
}
.booking-panel h3 {
  font-size:1.15rem
}
.form-intro {
  font-size:.81rem;
  margin:8px 0 22px;
  color:var(--muted)
}
.booking-fields {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px 14px
}
.booking-fields label {
  display:block;
  font-size:.8rem;
  font-weight:600;
  color:var(--ink)
}
.booking-fields label span {
  font-weight:400;
  font-size:.72rem;
  color:var(--muted)
}
.booking-field-wide {
  grid-column:1/-1
}
input,select,textarea {
  display:block;
  width:100%;
  min-height:45px;
  margin-top:6px;
  padding:10px 11px;
  border:1px solid #b7ccd9;
  border-radius:8px;
  background:#fff;
  color:var(--ink);
  font-size:16px;
  line-height:1.45;
  box-shadow:none
}
textarea {
  resize:vertical;
  min-height:76px
}
input::placeholder,textarea::placeholder {
  color:var(--muted);
  opacity:1
}
select:disabled {
  color:var(--muted);
  background:#f0f6f9
}
.form-hint {
  font-size:.73rem;
  line-height:1.6;
  color:var(--muted);
  margin-top:20px
}
.booking-widget .button {
  width:100%;
  margin-top:16px
}
.form-fallback {
  font-size:.78rem;
  margin-top:16px;
  padding-top:13px;
  border-top:1px solid var(--line)
}
.prepared-message {
  border:1px solid var(--line);
  padding:16px;
  border-radius:10px;
  margin-top:18px;
  background:var(--bg)
}
.prepared-message>p:first-child {
  font-size:.8rem;
  font-weight:600;
  color:var(--ink)
}
.prepared-message pre {
  font:inherit;
  font-size:.78rem;
  white-space:pre-wrap;
  overflow-wrap:anywhere;
  margin:12px 0
}
.prepared-message .button {
  margin-top:8px
}
.prepared-message small {
  display:block;
  font-size:.7rem;
  line-height:1.5;
  margin-top:10px
}
.faq-section {
  border-top:1px solid var(--line);
  padding-top:50px;
  padding-bottom:64px
}
.faq-list {
  max-width:850px
}
.faq-item {
  border-bottom:1px solid var(--line)
}
.faq-item:first-child {
  border-top:1px solid var(--line)
}
.faq-item summary {
  position:relative;
  cursor:pointer;
  list-style:none;
  padding:18px 38px 18px 0;
  font-size:.93rem;
  font-weight:600;
  color:var(--ink);
  min-height:56px
}
.faq-item summary::-webkit-details-marker {
  display:none
}
.faq-item summary::after {
  content:"+";
  position:absolute;
  right:4px;
  top:15px;
  color:var(--teal);
  font-size:1.3rem;
  font-weight:400
}
.faq-item[open] summary::after {
  content:"−"
}
.faq-item>p {
  font-size:.86rem;
  line-height:1.75;
  padding:0 30px 19px 0
}
.site-footer {
  background:#edf5fa;
  border-top:1px solid var(--line);
  padding:34px 0
}
.footer-inner {
  width:var(--page);
  margin:auto;
  display:grid;
  grid-template-columns:1fr 1.5fr;
  gap:20px 50px
}
.footer-brand {
  font-size:1.15rem;
  color:var(--ink);
  font-weight:700
}
.footer-inner p {
  font-size:.76rem;
  margin-top:7px;
  line-height:1.7;
  color:var(--muted)
}
.footer-links {
  display:flex;
  gap:9px 22px;
  justify-content:flex-end;
  align-content:start;
  flex-wrap:wrap
}
.footer-links a {
  font-size:.79rem;
  text-underline-offset:4px;
  padding:3px 0
}
.footer-bottom {
  grid-column:1/-1;
  display:flex;
  gap:20px;
  justify-content:space-between;
  align-items:center;
  border-top:1px solid var(--line);
  padding-top:18px;
  margin-top:9px;
  font-size:.74rem
}
.footer-bottom a {
  white-space:nowrap;
  text-underline-offset:4px
}
.mobile-cta {
  display:none
}
.subject-page .hero {
  grid-template-columns:1.5fr 1fr;
  align-items:start
}
.subject-page .hero h1 {
  font-size:clamp(2.25rem,4.1vw,3.25rem)
}
.subject-page .hero-text {
  font-size:1rem;
  max-width:700px
}
.subject-summary {
  padding:25px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--mint)
}
.subject-summary h2 {
  font-size:1.2rem;
  margin-bottom:15px
}
.subject-summary ul {
  padding-left:19px;
  font-size:.88rem;
  margin:0
}
.subject-summary li+li {
  margin-top:9px
}
.hero-points {
  list-style:none;
  padding:0;
  margin:21px 0 0;
  font-size:.82rem
}
.hero-points li {
  margin-top:7px;
  padding-left:20px;
  position:relative
}
.hero-points li::before {
  content:"✓";
  position:absolute;
  left:0;
  color:var(--teal)
}
.card-grid,.legal-card-grid {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px
}
.info-card,.legal-card {
  background:white;
  border:1px solid var(--line);
  padding:25px;
  border-radius:14px
}
.info-card p,.legal-card p {
  font-size:.85rem;
  margin-top:13px
}
.card-tag {
  font-size:.7rem!important;
  color:var(--teal);
  font-weight:650;
  text-transform:uppercase;
  letter-spacing:.06em;
  margin-top:0!important;
  margin-bottom:10px
}
.section-muted {
  border-top:1px solid var(--line)
}
.contact-section {
  width:var(--page);
  margin:auto;
  padding:55px 0 65px
}
.contact-card {
  max-width:780px
}
.contact-card>p:not(.section-label) {
  margin-top:18px;
  font-size:.95rem
}
.subject-page .section-prices {
  padding-top:48px;
  padding-bottom:48px
}
.subject-page .section-prices>p {
  font-size:.84rem;
  margin-top:24px
}
.legal-main {
  width:min(900px,calc(100% - 96px));
  margin:0 auto;
  padding:55px 0 70px
}
.legal-main h1 {
  font-size:2.8rem
}
.legal-main h2 {
  font-size:1.6rem
}
.legal-main h3 {
  font-size:1.06rem;
  margin-bottom:11px
}
.legal-intro {
  font-size:.94rem;
  margin-top:18px
}
.legal-section {
  padding:30px 0;
  border-bottom:1px solid var(--line)
}
.legal-section>p,.legal-section ul,.legal-copy {
  font-size:.88rem;
  margin-top:16px
}
.legal-copy article+article {
  margin-top:27px
}
.legal-copy p+p {
  margin-top:13px
}
.legal-details {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px 25px;
  margin:20px 0 0
}
.legal-details dt {
  font-size:.74rem;
  color:var(--muted)
}
.legal-details dd {
  margin:3px 0 0;
  font-size:.94rem;
  color:var(--ink)
}
.legal-warning {
  padding:20px;
  border-radius:12px;
  background:#fff2d8;
  border:1px solid #ead4a9;
  margin:24px 0;
  color:#614817;
  font-size:.84rem
}
.legal-warning strong {
  display:block;
  margin-bottom:8px
}
.legal-placeholder {
  color:#795519;
  border-bottom:1px dashed #b38f51
}
.legal-placeholder-block {
  padding:12px;
  background:#fff2d8;
  color:#674914;
  font-size:.83rem
}
.legal-list {
  padding-left:20px
}
.legal-list li+li {
  margin-top:8px
}
.legal-main a {
  text-underline-offset:4px
}
.error-page main {
  min-height:58vh
}
@keyframes card-enter {
  from {
    opacity:0;
    transform:translateY(12px) rotate(0)
  }
  to {
    opacity:1;
    transform:translateY(0) rotate(1deg)
  }
}
@keyframes soft-enter {
  from {
    opacity:.5;
    transform:translateY(8px)
  }
  to {
    opacity:1;
    transform:translateY(0)
  }
}
.in-view {
  animation:soft-enter .45s ease-out both
}
@media(max-width:1000px) {
  :root {
    --page:min(1160px,calc(100% - 64px))
  }
  .hero {
    gap:34px;
    padding-top:48px
  }
  .hero h1 {
    font-size:2.85rem
  }
  .main-nav {
    gap:14px
  }
  .main-nav a {
    font-size:.85rem
  }
  .lesson-preview {
    padding:22px
  }
  .booking-section {
    gap:40px
  }
  .about-section {
    gap:35px;
    padding:30px
  }
  .about-method {
    padding-left:26px
  }
  .section-prices {
    padding-inline:32px
  }
  .price-card {
    padding:26px 20px 20px
  }
  .credit-note {
    grid-template-columns:1fr 2fr
  }
}
@media(max-width:760px) {
  :root {
    --page:calc(100% - 40px)
  }
  html {
    scroll-padding-top:85px
  }
  [id] {
    scroll-margin-top:85px
  }
  .header-inner {
    min-height:72px;
    gap:15px;
    flex-wrap:wrap
  }
  .brand-logo {
    width:93px
  }
  .main-nav {
    width:100%;
    flex-wrap:wrap;
    gap:10px 20px;
    padding:0 0 17px
  }
  .main-nav a {
    font-size:.84rem
  }
  .site-header[data-nav-ready] .main-nav {
    display:none
  }
  .site-header[data-nav-ready] .main-nav.is-open {
    display:flex;
    border-top:1px solid var(--line);
    padding-top:16px
  }
  .site-header[data-nav-ready] .nav-toggle {
    display:flex;
    align-items:center;
    gap:9px;
    padding:10px 14px;
    min-height:44px;
    border:1px solid var(--line);
    background:white;
    border-radius:9px;
    font-size:.82rem;
    color:var(--ink);
    font-weight:600;
    cursor:pointer
  }
  .nav-icon {
    width:16px;
    height:10px;
    border-top:1.5px solid currentColor;
    border-bottom:1.5px solid currentColor
  }
  .hero {
    grid-template-columns:1fr;
    padding:36px 0 30px;
    gap:30px
  }
  .hero h1 {
    font-size:clamp(2.1rem,7.1vw,3rem);
    line-height:1.13
  }
  .hero-text {
    margin-top:20px;
    font-size:.96rem;
    line-height:1.75;
    max-width:590px
  }
  .audience {
    font-size:.77rem;
    margin-top:12px
  }
  .eyebrow,.section-label {
    font-size:.67rem;
    margin-bottom:12px
  }
  .button-row {
    margin-top:23px;
    gap:17px
  }
  .button {
    font-size:.86rem;
    padding:12px 17px;
    min-height:47px
  }
  .hero-note {
    font-size:.72rem;
    margin-top:18px
  }
  .lesson-preview {
    padding:23px;
    transform:none;
    animation:none;
    max-width:560px;
    width:100%;
    margin:auto
  }
  .lesson-preview h2 {
    font-size:1.3rem
  }
  .lesson-topline {
    padding-bottom:13px;
    margin-bottom:17px
  }
  .lesson-tag {
    font-size:.7rem
  }
  .equation {
    font-size:1.9rem;
    margin:18px 0 14px
  }
  .quiz-answer {
    font-size:.94rem
  }
  .example-hint {
    font-size:.81rem;
    margin-top:14px
  }
  .example-solution {
    margin-top:13px
  }
  .example-caption {
    font-size:.65rem;
    margin-top:11px
  }
  .hero-rating {
    font-size:.73rem;
    padding:9px 11px;
    gap:2px 11px;
    margin-top:16px
  }
  .hero-rating+.button-row {
    margin-top:18px
  }
  .reviews-section {
    grid-template-columns:1fr;
    border-radius:17px
  }
  .reviews-summary {
    padding:25px
  }
  .reviews-score {
    margin-top:12px
  }
  .reviews-score strong {
    font-size:4.2rem
  }
  .reviews-experience {
    margin-top:19px;
    padding-top:18px
  }
  .reviews-details {
    padding:28px 25px
  }
  .reviews-details>p:not([class]) {
    font-size:.88rem;
    margin-top:13px
  }
  .reviews-details>.button {
    width:100%;
    margin-top:19px;
    text-align:center
  }
  .reviews-date {
    font-size:.69rem;
    margin-top:16px
  }
  .section {
    padding:44px 0
  }
  .section-heading {
    margin-bottom:24px
  }
  .section-heading h2 {
    font-size:1.9rem
  }
  .split-heading {
    grid-template-columns:1fr;
    gap:0
  }
  .split-heading>p {
    font-size:.84rem;
    line-height:1.7;
    margin-top:14px
  }
  .subject-row {
    grid-template-columns:39px 1fr 23px;
    gap:7px 13px;
    padding:17px 0
  }
  .subject-mark {
    grid-column:1;
    grid-row:1/3;
    width:38px;
    height:38px;
    align-self:start;
    font-size:.9rem;
    border-radius:8px
  }
  .subject-row>div {
    grid-column:2;
    grid-row:1
  }
  .subject-row h3 {
    font-size:1rem
  }
  .subject-level {
    font-size:.68rem
  }
  .subject-row>p {
    grid-column:2;
    grid-row:2;
    font-size:.75rem;
    line-height:1.6
  }
  .subject-arrow {
    grid-column:3;
    grid-row:1/3
  }
  .section-footnote {
    font-size:.76rem;
    line-height:1.8
  }
  .about-section {
    grid-template-columns:1fr;
    gap:25px;
    padding:27px 24px;
    border-radius:16px
  }
  .about-intro h2 {
    font-size:1.75rem
  }
  .about-intro>p:last-child,.about-method>p {
    font-size:.84rem;
    margin-top:15px
  }
  .about-method {
    padding:24px 0 0;
    border-left:0;
    border-top:1px solid #b9e0e8
  }
  .about-method h3 {
    font-size:1.06rem
  }
  .check-list {
    margin-top:15px
  }
  .check-list li {
    font-size:.78rem
  }
  .steps {
    grid-template-columns:1fr;
    gap:19px
  }
  .step-card {
    display:grid;
    grid-template-columns:31px 1fr;
    gap:7px 13px;
    padding-top:17px
  }
  .step-number {
    grid-row:1/3;
    margin:0;
    padding-top:3px
  }
  .step-card h3 {
    font-size:1rem
  }
  .step-card p {
    margin:0;
    font-size:.8rem;
    line-height:1.7
  }
  .process-note {
    font-size:.72rem;
    margin-top:21px
  }
  .section-prices {
    padding:43px 20px;
    width:100%
  }
  .section-prices .section-heading>p {
    font-size:.85rem
  }
  .price-grid {
    grid-template-columns:1fr;
    gap:20px
  }
  .price-card {
    padding:21px;
    display:grid;
    grid-template-columns:1fr auto;
    column-gap:15px;
    border-radius:12px
  }
  .price-card h3 {
    font-size:1.08rem;
    grid-column:1;
    grid-row:1
  }
  .price-description {
    min-height:0;
    font-size:.76rem;
    grid-column:1;
    grid-row:2;
    margin-top:6px
  }
  .price-per {
    grid-column:2;
    grid-row:1;
    margin:0;
    text-align:right;
    white-space:nowrap
  }
  .price-per strong {
    font-size:1.85rem
  }
  .price-per span {
    font-size:1rem
  }
  .price-unit {
    grid-column:2;
    grid-row:2;
    font-size:.67rem;
    text-align:right;
    margin-top:7px
  }
  .price-total {
    grid-column:1/-1;
    grid-row:3;
    margin-top:14px;
    padding-top:12px;
    font-size:.86rem
  }
  .price-count {
    grid-column:1/-1;
    grid-row:4;
    font-size:.73rem
  }
  .price-card .button {
    grid-column:1/-1;
    grid-row:5;
    margin-top:15px;
    min-height:43px;
    font-size:.8rem
  }
  .price-badge {
    font-size:.59rem
  }
  .credit-note {
    grid-template-columns:1fr;
    gap:8px;
    font-size:.76rem;
    margin-top:23px
  }
  .credit-note>strong {
    font-size:.87rem
  }
  .booking-section {
    grid-template-columns:1fr;
    gap:29px
  }
  .booking-copy h2 {
    font-size:1.95rem
  }
  .booking-copy>p:not(.section-label) {
    font-size:.87rem;
    margin-top:16px
  }
  .booking-copy .contact-alternative {
    font-size:.76rem
  }
  .booking-copy .contact-expectation {
    font-size:.76rem
  }
  .booking-panel {
    padding:22px
  }
  .booking-panel h3 {
    font-size:1.1rem
  }
  .form-intro {
    font-size:.75rem;
    margin-bottom:19px
  }
  .booking-fields {
    gap:16px 12px
  }
  .booking-fields label {
    font-size:.76rem
  }
  .booking-fields label span {
    font-size:.67rem
  }
  .booking-fields select {
    font-size:16px
  }
  .form-hint {
    font-size:.7rem
  }
  .faq-section {
    padding:39px 0 50px
  }
  .faq-item summary {
    font-size:.86rem;
    padding-block:17px
  }
  .faq-item>p {
    font-size:.8rem
  }
  .site-footer {
    padding:29px 0 97px
  }
  .footer-inner {
    grid-template-columns:1fr;
    gap:20px
  }
  .footer-links {
    justify-content:flex-start;
    gap:9px 18px
  }
  .footer-links a {
    font-size:.74rem
  }
  .footer-bottom {
    flex-wrap:wrap;
    gap:9px;
    margin:0;
    padding-top:17px;
    line-height:1.6
  }
  .mobile-cta {
    position:fixed;
    bottom:12px;
    left:20px;
    right:20px;
    z-index:35;
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:10px;
    min-height:48px;
    padding:12px 17px;
    background:var(--accent);
    box-shadow:0 4px 22px rgba(8,47,73,.2);
    color:var(--ink);
    border:1px solid #29bbc7;
    border-radius:11px;
    text-decoration:none;
    font-size:.86rem;
    font-weight:600;
    transition:opacity .15s,visibility .15s
  }
  .mobile-cta span {
    font-size:.72rem;
    color:var(--ink);
    font-weight:400
  }
  .mobile-cta.is-hidden {
    opacity:0;
    visibility:hidden;
    pointer-events:none
  }
  .mobile-cta:focus-visible {
    outline-color:var(--ink)
  }
  .subject-page .hero {
    grid-template-columns:1fr;
    gap:25px
  }
  .subject-page .hero h1 {
    font-size:2.15rem
  }
  .subject-page .hero-text {
    font-size:.92rem
  }
  .subject-summary {
    padding:21px
  }
  .subject-summary h2 {
    font-size:1.13rem
  }
  .subject-summary ul {
    font-size:.81rem
  }
  .card-grid,.legal-card-grid {
    grid-template-columns:1fr;
    gap:15px
  }
  .info-card,.legal-card {
    padding:22px
  }
  .info-card h3,.legal-card h3 {
    font-size:1.08rem
  }
  .info-card p,.legal-card p {
    font-size:.8rem;
    margin-top:10px
  }
  .contact-section {
    padding:40px 0 45px
  }
  .contact-card h2 {
    font-size:1.95rem
  }
  .contact-card>p:not(.section-label) {
    font-size:.86rem
  }
  .legal-main {
    width:calc(100% - 40px);
    padding:35px 0 45px
  }
  .legal-main h1 {
    font-size:2.15rem
  }
  .legal-main h2 {
    font-size:1.4rem
  }
  .legal-details {
    grid-template-columns:1fr
  }
  .legal-intro {
    font-size:.86rem
  }
  .legal-section>p,.legal-section ul,.legal-copy {
    font-size:.81rem
  }
  .legal-warning {
    font-size:.8rem;
    padding:17px
  }
  .legal-page .mobile-cta,.error-page .mobile-cta {
    display:none
  }
  .legal-page .site-footer,.error-page .site-footer {
    padding-bottom:30px
  }
}
@media(max-width:370px) {
  .button-row {
    gap:14px
  }
  .hero .button-row>.button {
    width:100%;
    justify-content:space-between
  }
  .hero .button-row>.text-link {
    font-size:.8rem
  }
  .booking-fields {
    grid-template-columns:1fr
  }
  .price-card {
    column-gap:10px
  }
  .price-per strong {
    font-size:1.65rem
  }
  .price-description {
    font-size:.72rem
  }
  .booking-panel {
    padding:19px
  }
  .mobile-cta {
    font-size:.8rem
  }
  .mobile-cta span {
    font-size:.68rem
  }
  .equation {
    font-size:1.8rem
  }
}
@media(prefers-reduced-motion:reduce) {
  html {
    scroll-behavior:auto
  }
  *,*::before,*::after {
    animation:none!important;
    transition:none!important
  }
  .button:hover {
    transform:none
  }
  .lesson-preview {
    transform:none
  }
}
@media print {
  .site-header,.mobile-cta,.nav-toggle,.booking-section,.site-footer {
    display:none
  }
  .hero,.section,.reviews-section {
    width:100%;
    padding:20px 0
  }
  .reviews-section {
    background:white;
    color:black;
    break-inside:avoid
  }
  .reviews-summary {
    background:white
  }
  .reviews-section strong,.reviews-section h2,.reviews-section p,.reviews-section .section-label {
    color:black
  }
  .section-prices {
    background:white;
    color:black
  }
  .section-prices h2 {
    color:black
  }
  .lesson-preview {
    box-shadow:none;
    transform:none
  }
  .price-card,.about-section {
    break-inside:avoid
  }
}
.hero-price {
  font-size:.78rem;
  color:var(--muted);
  margin-top:18px
}
.hero-price+.hero-note {
  margin-top:8px
}
.subject-summary>p:last-child {
  font-size:.8rem;
  line-height:1.65;
  margin-top:17px
}
.section-note {
  font-size:.79rem;
  line-height:1.75;
  margin-top:22px;
  color:var(--muted)
}
.section-prices .section-note {
  color:#d4e7f1
}

.plan-note {
  padding: 10px 12px;
  margin-bottom: 18px;
  border-radius: 8px;
  background: var(--mint);
  color: var(--teal-dark);
  font-size: .78rem;
}
.plan-note button {
  border: 0;
  background: none;
  padding: 4px 0;
  margin-left: 6px;
  font-size: .73rem;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
  color: var(--teal-dark);
}