/* Layout: one narrow column like a route on a map — a dashed trail with pins runs from the free starting point to the guides and the language tools. */
:root {
  --ink: #0f172a;        /* navy of the books */
  --ink-2: #1e293b;
  --paper: #ffffff;
  --page: #f3f5f9;
  --line: #dbe1ea;
  --text: #0f172a;
  --muted: #5b6678;
  --maple: #dc2626;
  --maple-soft: #fdecec;
  --gold: #fbbf24;
  --on-ink: #ffffff;
  --on-ink-muted: #cbd5e1;
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --page: #0b1120; --paper: #131c2e; --line: #26324a; --text: #e8edf5; --muted: #9aa6ba;
    --maple-soft: #2a1618; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --page: #0b1120; --paper: #131c2e; --line: #26324a; --text: #e8edf5; --muted: #9aa6ba;
  --maple-soft: #2a1618; color-scheme: dark;
}
* { box-sizing: border-box; }
body { background: var(--page); color: var(--text); font-family: var(--font-sans); font-size: 16px; line-height: 1.5; -webkit-font-smoothing: antialiased; }
a { color: inherit; }
.wrap { max-width: 34rem; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }

/* Header band */
.top { background: var(--ink); color: var(--on-ink); position: relative; overflow: hidden; }
.top .wrap { padding-block: 1.75rem 2.25rem; display: grid; gap: 1.1rem; }
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: .65rem; align-items: start; }
.p { position: relative; margin: 0; border-radius: 1rem; overflow: hidden; border: 1px solid rgba(255,255,255,.1); }
.p:last-child { margin-top: 1.5rem; }
.p img { width: 100%; max-width: 100%; aspect-ratio: 3 / 4; object-fit: cover; display: block; }
.p figcaption { position: absolute; inset: auto 0 0 0; padding: 1.8rem .75rem .6rem; background: linear-gradient(to top, rgba(15,23,42,.92), rgba(15,23,42,.55) 55%, rgba(15,23,42,0)); color: #fff; }
.p figcaption b { display: block; font-size: 1.05rem; font-weight: 800; letter-spacing: -.01em; }
.p figcaption span { display: block; font-size: .74rem; color: #e2e8f0; line-height: 1.35; margin-top: .1rem; }
.who { font-family: var(--font-mono); font-size: .74rem; letter-spacing: .16em; text-transform: uppercase; color: var(--gold); font-weight: 600; }
h1 { margin: .25rem 0 0; font-size: clamp(2rem, 8vw, 2.6rem); line-height: 1.02; letter-spacing: -.035em; font-weight: 900; text-wrap: balance; }
h1 span { color: #f87171; }
.motto { margin: .6rem 0 0; color: var(--on-ink-muted); font-size: 1.02rem; }
.motto b { color: var(--on-ink); font-weight: 700; }

/* Route trail */
.route { position: relative; padding-block: 1.5rem 1rem; }
.leg { position: relative; padding-left: 1.6rem; padding-bottom: 1.75rem; }
.leg::before { content: ""; position: absolute; left: .42rem; top: .9rem; bottom: 0; border-left: 2px dashed var(--line); }
.leg:last-child::before { display: none; }
.pin { position: absolute; left: 0; top: .2rem; width: 1rem; height: 1rem; border-radius: 50%; background: var(--maple); box-shadow: 0 0 0 4px var(--maple-soft); }
.leg-h { display: flex; flex-wrap: wrap; align-items: baseline; gap: .2rem .6rem; margin-bottom: .85rem; }
.leg-k { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--maple); font-weight: 600; }
.leg-t { font-size: 1.15rem; font-weight: 800; letter-spacing: -.015em; margin: 0; width: 100%; }

/* Kick Start feature */
.kick { background: var(--ink); color: var(--on-ink); border: 1px solid var(--line); border-radius: 1.1rem; padding: 1rem; display: grid; grid-template-columns: 7.5rem minmax(0, 1fr); gap: 1rem; align-items: start; }
.kick img { width: 100%; max-width: 100%; border-radius: .5rem; display: block; box-shadow: 0 8px 24px rgba(0,0,0,.35); }
.tag { display: inline-block; font-family: var(--font-mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; font-weight: 600; padding: .2rem .5rem; border-radius: .35rem; background: var(--gold); color: var(--ink); }
.kick h3 { margin: .5rem 0 .25rem; font-size: 1.3rem; font-weight: 900; letter-spacing: -.02em; line-height: 1.1; }
.kick p { margin: 0; color: var(--on-ink-muted); font-size: .9rem; }
.stats { display: flex; flex-wrap: wrap; gap: .35rem .9rem; margin-top: .6rem; font-size: .8rem; color: var(--on-ink-muted); font-variant-numeric: tabular-nums; }
.stats b { color: var(--on-ink); font-weight: 800; }
.cta { grid-column: 1 / -1; display: flex; align-items: center; justify-content: center; gap: .5rem; background: var(--maple); color: #fff; text-decoration: none; font-weight: 800; font-size: 1.02rem; padding: .95rem 1rem; border-radius: .8rem; transition: transform .15s ease, background .15s ease; }
.cta:hover { background: #b91c1c; }
.cta:active { transform: scale(.98); }
.cta svg { width: 1.1rem; height: 1.1rem; }
.note { grid-column: 1 / -1; margin: -.3rem 0 0; font-size: .78rem; color: var(--on-ink-muted); text-align: center; }

/* Guides */
.guides { display: grid; gap: .75rem; }
.guide { display: grid; grid-template-columns: 5.2rem minmax(0, 1fr); gap: .9rem; align-items: center; background: var(--paper); border: 1px solid var(--line); border-radius: .95rem; padding: .75rem; text-decoration: none; transition: border-color .15s ease, transform .15s ease; }
.guide:hover { border-color: var(--maple); }
.guide:active { transform: scale(.99); }
.guide img { width: 100%; max-width: 100%; aspect-ratio: 210 / 297; object-fit: cover; object-position: top; border-radius: .4rem; display: block; border: 1px solid var(--line); }
.dest { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
.guide h4 { margin: .15rem 0 .2rem; font-size: 1.02rem; font-weight: 800; letter-spacing: -.01em; line-height: 1.2; }
.guide p { margin: 0; font-size: .86rem; color: var(--muted); line-height: 1.45; }
.go { margin-top: .45rem; display: inline-flex; align-items: center; gap: .3rem; font-size: .82rem; font-weight: 700; color: var(--maple); }
.go svg { width: .9rem; height: .9rem; }

/* Language tools */
.tools { background: var(--paper); border: 1px solid var(--line); border-radius: .95rem; overflow: hidden; }
.tool { display: grid; grid-template-columns: 3.6rem minmax(0, 1fr) auto; gap: .8rem; align-items: center; padding: .7rem .8rem; text-decoration: none; }
.tool + .tool { border-top: 1px solid var(--line); }
.tool:hover h4 { color: var(--maple); }
.tool img { width: 100%; max-width: 100%; aspect-ratio: 1; object-fit: cover; object-position: left top; border-radius: .45rem; display: block; border: 1px solid var(--line); }
.tool h4 { margin: 0; font-size: .95rem; font-weight: 700; line-height: 1.25; }
.tool p { margin: .1rem 0 0; font-size: .8rem; color: var(--muted); }
.tool .arr { width: 1.1rem; height: 1.1rem; color: var(--muted); }

/* Footer */
.foot { border-top: 1px solid var(--line); }
.foot .wrap { padding-block: 1.25rem 2rem; display: grid; gap: .6rem; }
.legal { font-size: .78rem; color: var(--muted); margin: 0; }
.mail { font-size: .85rem; margin: 0; color: var(--muted); }
.mail a { color: var(--text); font-weight: 600; text-decoration: none; border-bottom: 1px solid var(--line); }
.mail a:hover { border-color: var(--maple); }
.sig { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin: 0; }

a:focus-visible { outline: 3px solid var(--gold); outline-offset: 3px; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }
@media (min-width: 30rem) { .kick { grid-template-columns: 9rem minmax(0, 1fr); padding: 1.2rem; } .guide { grid-template-columns: 6rem minmax(0, 1fr); } }

.wrap.wide { max-width: 46rem; }
.nav { background: var(--ink); color: var(--on-ink); border-bottom: 1px solid rgba(255,255,255,.08); }
.nav .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: .8rem; }
.nav a { text-decoration: none; font-size: .86rem; font-weight: 700; display: inline-flex; align-items: center; gap: .35rem; color: var(--on-ink); }
.nav a:hover { color: #fca5a5; }
.nav a svg { width: 1rem; height: 1rem; transform: rotate(180deg); }
.nav .brand { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .14em; text-transform: uppercase; color: var(--on-ink-muted); font-weight: 600; }
.hero { background: var(--ink); color: var(--on-ink); position: relative; overflow: hidden; }
.hero::after { content: ""; position: absolute; inset: auto -20% -40% auto; width: 60%; aspect-ratio: 1; background: radial-gradient(circle, rgba(220,38,38,.22), transparent 65%); pointer-events: none; }
.hero .wrap { position: relative; z-index: 1; padding-block: 2rem 2.4rem; display: grid; gap: 1.6rem; }
.hero-cover img { height: auto; width: 100%; max-width: 11rem; display: block; margin: 0 auto; border-radius: .6rem; box-shadow: 0 18px 40px rgba(0,0,0,.45); }
.hero .lead { margin: .7rem 0 0; color: var(--on-ink-muted); font-size: 1.05rem; text-wrap: pretty; }
.chips { list-style: none; padding: 0; margin: 1.1rem 0 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 9rem), 1fr)); gap: .5rem; }
.chips li { border: 1px solid rgba(255,255,255,.12); background: rgba(255,255,255,.05); border-radius: .75rem; padding: .6rem .7rem; font-size: .82rem; color: var(--on-ink-muted); line-height: 1.3; }
.chips b { display: block; font-size: 1.35rem; font-weight: 900; color: var(--gold); letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.buy { margin-top: 1.3rem; display: grid; gap: .55rem; }
.buy .cta { font-size: 1.05rem; }
.cta.off { background: #334155; color: #cbd5e1; cursor: default; pointer-events: none; }
.buy .note { margin: 0; }
.sec { padding-block: 2.2rem; }
.sec + .sec { border-top: 1px solid var(--line); }
.sec.alt { background: var(--paper); }
.kick-k { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--maple); font-weight: 600; margin: 0; }
.sec h2 { font-size: clamp(1.35rem, 4.6vw, 1.7rem); font-weight: 900; letter-spacing: -.025em; line-height: 1.12; margin: .35rem 0 .6rem; text-wrap: balance; }
.sec .intro { color: var(--muted); margin: 0 0 1.1rem; text-wrap: pretty; }
.fit { display: grid; gap: .8rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr)); }
.fit > div { background: var(--paper); border: 1px solid var(--line); border-radius: 1rem; padding: 1rem 1.1rem; }
.sec.alt .fit > div { background: var(--page); }
.fit h3 { margin: 0 0 .6rem; font-size: 1rem; font-weight: 800; }
.ticks { list-style: none; padding: 0; margin: 0; display: grid; gap: .5rem; }
.ticks li { position: relative; padding-left: 1.7rem; font-size: .93rem; line-height: 1.45; }
.ticks li::before { content: ""; position: absolute; left: 0; top: .1rem; width: 1.15rem; height: 1.15rem; border-radius: 50%; background: var(--maple) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center / 70% no-repeat; }
.ticks.no li::before { background: #94a3b8 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.5' stroke-linecap='round'%3E%3Cpath d='M7 7l10 10M17 7 7 17'/%3E%3C/svg%3E") center / 62% no-repeat; }
.toc { list-style: none; padding: 0; margin: 0; display: grid; gap: .45rem; }
.toc li { display: grid; grid-template-columns: 2.6rem minmax(0, 1fr); gap: .7rem; align-items: baseline; background: var(--paper); border: 1px solid var(--line); border-radius: .75rem; padding: .65rem .8rem; }
.sec.alt .toc li { background: var(--page); }
.toc .n { font-family: var(--font-mono); font-weight: 600; color: var(--maple); font-size: .9rem; text-align: right; }
.toc b { display: block; font-size: .95rem; font-weight: 700; line-height: 1.3; }
.toc span.s { display: block; font-size: .8rem; color: var(--muted); margin-top: .15rem; line-height: 1.4; }
.toc li.hl { border-color: var(--maple); box-shadow: inset 3px 0 0 var(--maple); }
.peek { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; }
.peek figure { margin: 0; }
.peek img { height: auto; width: 100%; max-width: 100%; display: block; border-radius: .6rem; border: 1px solid var(--line); box-shadow: 0 10px 26px rgba(15,23,42,.12); background: #fff; }
.peek figcaption { font-size: .8rem; color: var(--muted); margin-top: .45rem; line-height: 1.35; }
.get { display: grid; gap: .65rem; }
.get-i { display: grid; grid-template-columns: 2.4rem minmax(0, 1fr); gap: .8rem; align-items: start; background: var(--paper); border: 1px solid var(--line); border-radius: .9rem; padding: .85rem .9rem; }
.sec.alt .get-i { background: var(--page); }
.get-i .ic { width: 2.4rem; height: 2.4rem; border-radius: .6rem; background: var(--ink); color: #fff; display: grid; place-items: center; }
.get-i .ic svg { width: 1.2rem; height: 1.2rem; }
.get-i h3 { margin: 0; font-size: .98rem; font-weight: 800; line-height: 1.25; }
.get-i p { margin: .2rem 0 0; font-size: .87rem; color: var(--muted); line-height: 1.45; }
.authors { display: grid; gap: .8rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr)); }
.au { display: grid; grid-template-columns: 5.5rem minmax(0, 1fr); gap: .9rem; background: var(--paper); border: 1px solid var(--line); border-radius: 1rem; padding: .85rem; }
.sec.alt .au { background: var(--page); }
.au img { width: 100%; max-width: 100%; aspect-ratio: 3 / 4; object-fit: cover; object-position: center 20%; border-radius: .6rem; display: block; }
.au h3 { margin: 0; font-size: 1.02rem; font-weight: 800; }
.au .r { margin: .1rem 0 .4rem; font-size: .76rem; color: var(--maple); font-weight: 700; }
.au p { margin: 0; font-size: .85rem; color: var(--muted); line-height: 1.45; }
.faq details { background: var(--paper); border: 1px solid var(--line); border-radius: .8rem; padding: .2rem 1rem; }
.sec.alt .faq details { background: var(--page); }
.faq details + details { margin-top: .5rem; }
.faq summary { cursor: pointer; font-weight: 700; padding: .75rem 0; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--maple); font-weight: 900; font-size: 1.2rem; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 0 0 .9rem; color: var(--muted); font-size: .93rem; }
.final { background: var(--ink); color: var(--on-ink); }
.final .wrap { padding-block: 2.2rem; display: grid; gap: .9rem; text-align: center; }
.final h2 { margin: 0; font-size: 1.5rem; font-weight: 900; letter-spacing: -.02em; text-wrap: balance; }
.final p { margin: 0; color: var(--on-ink-muted); }
.countries { display: grid; gap: .6rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr)); }
.countries > div { background: var(--paper); border: 1px solid var(--line); border-radius: .85rem; padding: .75rem .9rem; }
.countries h3 { margin: 0 0 .25rem; font-family: var(--font-mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: var(--maple); font-weight: 600; }
.countries p { margin: 0; font-weight: 700; font-size: .95rem; }
.next { display: grid; gap: .7rem; }
.peek.split { grid-template-columns: 1fr; }
.peek.split figure:first-child { max-width: 22rem; margin-inline: auto; }
@media (min-width: 44rem) {
  .hero .wrap { grid-template-columns: minmax(0, 1fr) 15rem; align-items: center; gap: 2.4rem; padding-block: 3rem 3.2rem; }
  .hero-cover { order: 2; }
  .hero-cover img { max-width: 100%; transform: rotate(2deg); }
  .peek { gap: 1.2rem; }
  .peek.split { grid-template-columns: 1fr 1fr; }
  .peek.split figure:first-child { max-width: none; }
}

.kform { margin-top: 1.3rem; background: #fff; color: #0f172a; border-radius: 1rem; padding: 1.1rem; display: grid; gap: .85rem; box-shadow: 0 18px 40px rgba(0,0,0,.35); }
.kform h2 { margin: 0; font-size: 1.15rem; font-weight: 900; letter-spacing: -.015em; }
.kform .sub { margin: -.45rem 0 0; font-size: .86rem; color: #5b6678; }
.kf { display: grid; gap: .3rem; }
.kf label.l { font-size: .84rem; font-weight: 700; }
.kf label.l small { font-weight: 500; color: #5b6678; }
.kf input[type=text], .kf input[type=email], .kf input[type=tel], .kf select { width: 100%; font: 500 1rem/1.2 var(--font-sans); color: #0f172a; background: #f8fafc; border: 1.5px solid #cbd5e1; border-radius: .6rem; padding: .7rem .75rem; min-height: 2.9rem; }
.kf input:focus, .kf select:focus { outline: none; border-color: #dc2626; box-shadow: 0 0 0 3px rgba(220,38,38,.15); background: #fff; }
.kf .row { display: grid; grid-template-columns: minmax(0, 8.5rem) minmax(0, 1fr); gap: .4rem; }
.kf .hint { font-size: .76rem; color: #5b6678; margin: 0; }
.kf .err { font-size: .78rem; color: #b91c1c; font-weight: 600; margin: 0; display: none; }
.kf.bad .err { display: block; }
.kf.bad input, .kf.bad select { border-color: #dc2626; }
.kchk { display: grid; grid-template-columns: 1.25rem minmax(0, 1fr); gap: .55rem; align-items: start; font-size: .84rem; line-height: 1.4; }
.kchk input { width: 1.15rem; height: 1.15rem; margin: .1rem 0 0; accent-color: #dc2626; }
.kpriv { font-size: .74rem; color: #5b6678; margin: 0; line-height: 1.45; }
.kpriv a { color: #0f172a; font-weight: 600; }
.kform .cta { border: 0; width: 100%; cursor: pointer; font-family: var(--font-sans); }
.kform .cta[disabled] { opacity: .7; cursor: wait; }
.kmsg { display: none; border-radius: .7rem; padding: .8rem .9rem; font-size: .9rem; line-height: 1.45; }
.kmsg.ok { display: block; background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
.kmsg.no { display: block; background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.kmsg b { display: block; font-size: 1rem; margin-bottom: .15rem; }
.kform.done .kf, .kform.done .kchk, .kform.done .kpriv, .kform.done .cta, .kform.done .sub { display: none; }
.hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; opacity: 0; }