:root {
  --paper: #ffffff;
  --ink: #20342b;
  --muted: #465b50;
  --green: #1f5a45;
  --dark-green: #123c2f;
  --math: #2e7d5b;
  --mint: #e4f0e9;
  --blue: #2f5fa7;
  --sky: #e5edf8;
  --gold: #a46c0e;
  --line: #bdd5c7;
  --warm: #fff2d8;
  --white: #ffffff;
  --serif: Georgia, 'Times New Roman', serif;
}

* { box-sizing: border-box; }
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}
body { margin: 0; color: var(--ink); background: var(--paper); font: 1rem/1.65 system-ui, sans-serif; }
img { display: block; max-width: 100%; }
a { color: var(--green); text-underline-offset: .25em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid #235a9d; outline-offset: 5px; }
.skip { position: absolute; top: .5rem; left: .5rem; transform: translateY(-200%); padding: .6rem 1rem; z-index: 3; background: var(--white); }
.skip:focus { transform: translateY(0); }
.wrap { width: min(100% - 3rem, 73rem); margin-inline: auto; }
.site-header { border-bottom: 1px solid var(--line); }
.header-inner, .footer { display: flex; align-items: center; justify-content: space-between; gap: 1.25rem; }
.header-inner { min-height: 5.4rem; padding-block: .8rem; }
.brand { display: inline-flex; align-items: center; gap: .6rem; color: var(--ink); text-decoration: none; line-height: 1; }
.brand strong, .brand small { display: block; }
.brand strong { font: bold 1.65rem/.95 var(--serif); }
.brand small { font-size: .6rem; font-weight: 800; letter-spacing: .21em; margin-top: .4rem; }
nav { display: flex; align-items: center; flex-wrap: wrap; gap: .35rem clamp(.8rem, 3vw, 2rem); }
nav a { color: var(--ink); font-weight: 650; text-decoration: none; padding-block: .42rem; font-size: .92rem; }
nav a:hover { text-decoration: underline; }
.nav-contact { border: 1px solid var(--line); border-radius: 2rem; padding-inline: .95rem; }
.nav-platform { padding: .55rem .85rem; border-radius: .6rem; background: var(--green); color: white; }
.nav-platform:hover { background: var(--dark-green); }
.access-note { margin-top: .65rem; color: var(--muted); font-size: .88rem; }
.platform-button { margin-top: .85rem; }
.hero { display: grid; grid-template-columns: 1fr 1.06fr; gap: clamp(2rem, 5vw, 5rem); align-items: center; padding-block: clamp(3.8rem, 8vw, 7.3rem); }
.eyebrow { display: flex; gap: .55rem; align-items: center; margin: 0 0 1rem; color: var(--green); font-size: .72rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.eyebrow span { width: .6rem; height: .6rem; border-radius: 50%; background: var(--gold); flex: none; }
h1, h2, h3 { text-wrap: balance; margin: 0; }
h1, h2 { font-family: var(--serif); font-weight: 500; letter-spacing: -.055em; line-height: 1.02; }
h1 { font-size: clamp(3.4rem, 7vw, 6.6rem); }
h1 em { display: block; font-weight: inherit; color: var(--green); }
h2 { font-size: clamp(2.55rem, 5.3vw, 4.15rem); }
h3 { font-size: 1.3rem; line-height: 1.25; }
p { margin: 0; }
.lead, .section-lead { margin-top: 1.3rem; color: var(--muted); max-width: 56ch; font-size: clamp(1rem, 1.65vw, 1.18rem); }
.actions { display: flex; align-items: center; flex-wrap: wrap; gap: .75rem 1rem; margin-top: 1.8rem; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: .65rem; min-height: 2.85rem; padding: .55rem 1rem; border-radius: .6rem; text-decoration: none; font-size: .92rem; font-weight: 750; }
.primary { background: var(--green); color: white; }
.primary:hover { background: #143f2c; }
.text-button { padding-inline: 0; text-decoration: underline; }
.hero-map { margin: 0; border: 1px solid #bccfe9; border-radius: 1.4rem; background: var(--sky); padding: .65rem; }
.hero-map img { width: 100%; height: auto; }
.hero-map figcaption { display: flex; justify-content: space-between; gap: 1rem; padding: .62rem .35rem .1rem; color: var(--muted); font-size: .76rem; letter-spacing: .07em; }
.section { padding-block: clamp(3.4rem, 7vw, 6.2rem); }
section[id] { scroll-margin-top: 1rem; }
.product { background: var(--mint); border-block: 1px solid var(--line); }
.product-grid, .about-inner { display: grid; grid-template-columns: 1.22fr .78fr; gap: clamp(2rem, 7vw, 6rem); align-items: center; }
.steps { padding: 0; margin: 1.5rem 0 0; list-style: none; }
.steps li { display: flex; align-items: center; gap: .8rem; padding: .53rem 0; border-top: 1px solid var(--line); font-weight: 650; }
.steps li span, .number { font: 750 .75rem/1.4 system-ui, sans-serif; color: var(--green); letter-spacing: .1em; }
.sample { background: var(--warm); border: 1px solid #ddcbb0; border-radius: 1.3rem; padding: clamp(1.25rem, 3vw, 2.25rem); }
.sample h3 { font: 500 1.95rem/1.15 var(--serif); }
.sample p:not(.eyebrow) { margin-top: .8rem; }
.sample .sample-source { color: var(--muted); font-size: .84rem; }
details { margin-top: 1.25rem; border-top: 1px solid #cbb99e; padding-top: .65rem; }
summary { cursor: pointer; color: var(--green); font-weight: 800; padding: .3rem 0; }
.year-catalog { margin-top: clamp(2.25rem, 5vw, 4rem); }
.year-catalog > h3 { font: 500 clamp(1.9rem, 3.6vw, 2.8rem)/1.12 var(--serif); }
.achievement-copy h3 { font: 500 clamp(1.9rem, 3.6vw, 2.8rem)/1.12 var(--serif); }
.year-catalog-intro { margin-top: .65rem; color: var(--muted); }
.year-grid, .future-grid { display: grid; gap: 1rem; margin-top: 1.25rem; }
.year-grid, .future-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.year-card { padding: 1rem; border: 1px solid var(--line); border-top: 3px solid var(--math); border-radius: .85rem; background: var(--white); }
.year-card:has(.planned-status) { border-top-color: var(--gold); }
.future-card { border-top-color: var(--blue); }
.year-card-heading { display: flex; align-items: center; flex-wrap: wrap; gap: .45rem .75rem; }
.year-card h4 { margin: 0; font-size: 1.12rem; }
.year-status { padding: .16rem .6rem; border-radius: 1rem; background: #e2eee2; color: var(--green); font-size: .78rem; font-weight: 750; }
.year-card ol { margin: .7rem 0 0; padding-inline-start: 1.4rem; }
.year-card li + li { margin-top: .4rem; }
.planned-status, .future-card .year-status:not(.test-status) { background: var(--warm); color: var(--ink); }
.future-card h4 { margin-top: .6rem; }
.year-card p { margin-top: .45rem; color: var(--muted); }
.cycle-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; padding: 0; margin: 1.5rem 0 0; list-style: none; }
.cycle-grid li { padding: 1rem; border-top: 3px solid var(--blue); border-radius: 0 0 .85rem .85rem; background: var(--sky); }
.cycle-grid .number { color: var(--blue); }
.cycle-grid h3 { margin-top: .45rem; }
.cycle-grid p { margin-top: .45rem; color: var(--muted); }
@media (width > 53rem) {
  .cycle-grid { grid-template-columns: repeat(8, minmax(0, 1fr)); }
  .cycle-grid li { grid-column: span 2; }
  .cycle-grid li:nth-child(5) { grid-column: 2 / span 2; }
}
#conquistas .year-catalog-intro { max-width: 68ch; }
#conquistas { display: grid; grid-template-columns: 1.1fr 1fr; align-items: center; gap: clamp(1.5rem, 4vw, 3rem); }
.ascent-preview { min-width: 0; margin: 0; padding: 1.25rem; background: var(--white); border: 1px solid var(--line); border-radius: 1rem; box-shadow: 0 8px 24px #123c2f0a; }
.ascent-preview figcaption { display: flex; align-items: baseline; flex-wrap: wrap; justify-content: space-between; gap: .25rem .75rem; font-weight: 750; color: var(--green); }
.ascent-preview figcaption span { font-size: .75rem; font-weight: 500; color: var(--muted); }
.ascent-preview > p { margin-top: .6rem; font-size: .9rem; }
.ascent-preview progress { display: block; width: 100%; height: .65rem; margin-top: .4rem; accent-color: #225b49; }
.ascent-preview .ascent-remaining { margin-top: .35rem; font-size: .8rem; color: var(--muted); }
.ascent-preview svg { display: block; width: 100%; height: auto; margin-top: .75rem; border-radius: .7rem; background: #edf3e7; }
.ascent-preview .mountain-distant { fill: #d0e0cf; }
.ascent-preview .mountain-near { fill: #b8cfb8; }
.ascent-preview .mountain-route { fill: none; stroke: #476952; stroke-width: 3; stroke-dasharray: 2 6; stroke-linecap: round; }
.ascent-preview .mountain-route.is-earned { stroke: #225b49; stroke-width: 5; stroke-dasharray: none; }
.ascent-preview .mountain-node { fill: #fff; stroke: #476952; stroke-width: 2; }
.ascent-preview .mountain-node.is-earned { fill: #225b49; stroke: #fff; }
.ascent-preview .mountain-marker { fill: #183f35; font: 700 13px system-ui, sans-serif; text-anchor: middle; dominant-baseline: central; }
.ascent-preview .mountain-node.is-earned + .mountain-marker { fill: #fff; }
.ascent-preview .mountain-flag { fill: #b36b23; stroke: #633b13; stroke-width: 1.3; stroke-linejoin: round; }
.product-tools { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem; margin-top: 2rem; }
.product-tools article { border-top: 1px solid var(--line); padding-top: 1rem; }
.product-tools h3 { text-wrap: wrap; }
.product-tools p { margin-top: .55rem; color: var(--muted); max-width: 58ch; }
.product-tools > article { display: flex; flex-direction: column; min-width: 0; }
.product-tools > article > a { align-self: flex-start; }
.tool-visual { margin: auto 0 0; padding-top: 1.5rem; }
.tool-visual figcaption { margin-top: .7rem; color: var(--muted); font-size: .78rem; line-height: 1.5; }
@media (width > 40rem) {
  .product-tools > article { display: grid; grid-row: span 3; grid-template-rows: subgrid; }
  .tool-visual { display: grid; grid-row: span 2; grid-template-rows: subgrid; margin: 0; padding: 0; row-gap: .7rem; }
  .tool-visual figcaption { margin: 0; }
}
.offline-scene { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1fr); align-items: center; gap: 1.25rem; padding: 1.5rem; border-radius: 1rem; background: var(--mint); }
.phone-illustration { max-width: 195px; width: 100%; margin: auto; padding: .65rem; border: 5px solid var(--dark-green); border-radius: 1.6rem; background: #fff; box-shadow: 8px 10px 0 #1f5a4510; }
.phone-speaker { width: 34%; height: 4px; margin: 0 auto 1rem; border-radius: 4px; background: var(--dark-green); }
.phone-heading { display: flex; align-items: center; gap: .35rem; font-size: .78rem; }
.download-chip { display: inline-block; margin-top: .8rem; padding: .2rem .45rem; border-radius: 1rem; background: var(--mint); color: var(--green); font-size: .65rem; font-weight: 750; }
.phone-lesson { margin-top: .7rem; padding: .7rem; background: #f5f7f2; border: 1px solid var(--line); border-radius: .65rem; }
.phone-lesson > span { display: block; font-size: .55rem; letter-spacing: .1em; color: var(--green); }
.phone-lesson strong { display: block; margin-top: .4rem; font-size: .8rem; line-height: 1.4; }
.lesson-marks { display: flex; gap: 3px; margin-top: .8rem; }
.lesson-marks i { flex: 1; height: 4px; background: #d0e0cf; }
.lesson-marks i:first-child { background: var(--gold); }
.phone-action { margin-top: .8rem; padding: .5rem .25rem; border-radius: .45rem; background: var(--green); color: #fff; text-align: center; font-size: .65rem; font-weight: 650; }
.phone-home { height: 4px; width: 36%; background: var(--dark-green); border-radius: 4px; margin: 1rem auto .1rem; }
.visual-eyebrow { display: block; font-size: .65rem; font-weight: 750; letter-spacing: .07em; text-transform: uppercase; color: var(--green); }
.offline-steps > div { display: flex; gap: .65rem; margin-top: 1rem; }
.offline-steps b { display: grid; place-items: center; flex: none; width: 1.75rem; height: 1.75rem; border-radius: 50%; color: var(--green); background: white; font-size: .7rem; }
.offline-steps strong, .offline-steps small { display: block; }
.offline-steps strong { font-size: .85rem; }
.offline-steps small { margin-top: .2rem; font-size: .75rem; color: var(--muted); line-height: 1.5; }
.browser-illustration { border: 1px solid #bdd0e8; border-radius: 1rem; overflow: hidden; background: white; box-shadow: 0 8px 20px #2f5fa708; }
.browser-bar { display: flex; align-items: center; gap: 1rem; padding: .65rem 1rem; background: var(--sky); color: var(--blue); font-size: .7rem; }
.browser-bar > span:first-child { letter-spacing: .12em; }
.browser-content { padding: 1.25rem; }
.browser-content .visual-eyebrow { color: var(--blue); }
.browser-title { display: block; margin: .45rem 0 1rem; font-size: 1.05rem; line-height: 1.4; }
.skill-example { display: flex; align-items: center; justify-content: space-between; gap: .5rem; padding: .65rem 0; border-top: 1px solid #e1e8ef; font-size: .78rem; }
.skill-example b { flex: none; padding: .15rem .5rem; border-radius: 1rem; font-size: .65rem; }
.skill-good { color: var(--green); background: var(--mint); }
.skill-review { color: #76500d; background: var(--warm); }
.skill-study { color: var(--blue); background: var(--sky); }
.browser-note { display: flex; gap: .5rem; margin-top: 1rem; padding: .65rem; border-radius: .5rem; background: var(--sky); font-size: .75rem; color: #234f88; }
.browser-note > span { font-size: 1rem; }
@media (max-width: 25rem) {
  .product-tools .offline-scene { grid-template-columns: 1fr; }
}
.audiences { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin-top: 2rem; gap: 1rem; }
.audiences article { border-top: 3px solid var(--math); padding: 1.15rem 1.1rem 1.35rem; background: var(--mint); border-radius: 0 0 .85rem .85rem; display: flex; flex-direction: column; align-items: start; }
.audiences h3 { margin-top: .65rem; }
.audiences p { margin-block: .65rem 1.2rem; color: var(--muted); }
.audiences a { margin-top: auto; font-size: .9rem; font-weight: 750; }
.about { background: var(--dark-green); color: var(--white); }
.about .eyebrow, .about .section-lead { color: #e4f0e9; }
.about .author { color: var(--ink); }
.author { display: flex; align-items: center; gap: 1rem; padding: 1.2rem; border: 1px solid var(--line); border-radius: 1rem; background: var(--white); }
.author img { border-radius: 50%; object-fit: cover; flex: none; }
.author p { color: var(--muted); margin-top: .3rem; }
.contact { display: flex; align-items: center; justify-content: space-between; gap: 1.6rem; padding: clamp(1.5rem, 5vw, 3.6rem); background: var(--green); color: var(--white); border-radius: 1.4rem; }
.contact .eyebrow { color: #f2d5a9; }
.contact p:not(.eyebrow) { margin-top: 1rem; max-width: 51ch; }
.contact-with-form { display: grid; grid-template-columns: 1fr 1fr; align-items: start; }
.contact-form { padding: 1.4rem; background: white; color: var(--ink); border-radius: 1rem; min-width: 0; }
.contact-form fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
.contact-form legend { padding: 0; margin-bottom: .8rem; font-size: 1.25rem; font-weight: 750; }
.contact-form label { display: block; margin-top: .7rem; font-weight: 650; }
.contact-form input, .contact-form select, .contact-form textarea { display: block; width: 100%; margin-top: .25rem; padding: .65rem; font: inherit; color: var(--ink); background: #fff; border: 1px solid #7b9689; border-radius: .45rem; }
.contact-form textarea { resize: vertical; }
.contact .contact-purpose { font-size: .8rem; line-height: 1.5; }
.contact-form button { margin-top: 1rem; cursor: pointer; font: inherit; border: 0; }
.contact-form button:disabled { opacity: .65; cursor: wait; }
.contact-form #contact-status { font-size: .9rem; }
.contact-form #contact-status:empty { display: none; }
.contact-alternative { margin-top: 1rem; font-size: .9rem; }
.light { background: var(--white); color: var(--green); flex: none; }
.light:hover { background: #f2e8d5; }
.light:focus-visible { outline-color: var(--white); }
.footer { border-top: 1px solid var(--line); padding-block: 1.3rem 2rem; flex-wrap: wrap; font-size: .88rem; }
.footer a { overflow-wrap: anywhere; }
.information { max-width: 48rem; }
.information h1 { font-size: clamp(2.2rem, 6vw, 3.8rem); margin-bottom: 1rem; }
.information section { margin-top: 2rem; }
.information section h2 { font-size: clamp(1.45rem, 3vw, 2rem); margin-bottom: .6rem; }
.information section p + p { margin-top: .6rem; }

@media (width > 40rem) and (height >= 30rem) {
  html { scroll-padding-top: 5.5rem; }
  .site-header { position: sticky; top: 0; z-index: 2; background: var(--paper); }
}

@media (max-width: 53rem) {
  .contact-with-form { grid-template-columns: 1fr; }
  .offline-scene { grid-template-columns: 1fr; padding: 1.1rem; }
  #conquistas { grid-template-columns: 1fr; }
  .hero, .product-grid, .about-inner { grid-template-columns: 1fr; }
  .audiences, .year-grid, .cycle-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-map { width: min(100%, 36rem); }
  .about-inner { gap: 1.4rem; }
}
@media (max-width: 40rem) {
  .offline-scene { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: .9rem; }
  .wrap { width: calc(100% - 2rem); }
  .header-inner, .contact { flex-direction: column; align-items: flex-start; }
  .header-inner { gap: .7rem; }
  .nav-contact { padding-inline: .62rem; }
  .audiences, .product-tools, .year-grid, .future-grid, .cycle-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 2.7rem; }
  .hero-map figcaption { font-size: .66rem; }
}