/* Sumi website. Washi paper by day, sumi ink by night. No external requests. */
@font-face { font-family: "Shippori Mincho"; src: url("/assets/fonts/shippori-mincho-bold.woff2") format("woff2"); font-weight: 700; font-display: swap; }

:root {
  --bg: #F5F0E6; --bg2: #EFE8DA; --card: #FBF8F2; --line: #DDD3C2; --paper: #EFE8DA;
  --ink: #1C1B1A; --soft: #5B554C; --faint: #8A8275; --accent: #B8432B; --accent-ink: #FBF8F2; --wash: #F3E3DC;
  --night: #1D1C22; --night-ink: #F3EDE2; --night-soft: #B8AFA1;
  --grid: rgba(184, 67, 43, .22);
  --sys: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --head: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", "Noto Serif JP", "Noto Serif CJK JP", Georgia, serif;
  --jp-serif: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", "Noto Serif JP", "Noto Serif CJK JP", "Source Han Serif JP", serif;
  --jp-sans: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "YuGothic", "Meiryo", "Noto Sans JP", "Noto Sans CJK JP", sans-serif;
  --r: 18px;
  --gutter-l: max(20px, env(safe-area-inset-left, 0px));
  --gutter-r: max(20px, env(safe-area-inset-right, 0px));
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #1C1B1A; --bg2: #232120; --card: #26241F; --line: #3B372F; --paper: #2B2924;
    --ink: #F3EDE2; --soft: #B8AFA1; --faint: #8F877B; --accent: #E0735A; --accent-ink: #1C1B1A; --wash: #3A2620;
    --night: #121115; --grid: rgba(224, 115, 90, .25); color-scheme: dark; }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.65 var(--sys); }
img, video, svg { max-width: 100%; }
img { height: auto; }
a { color: var(--accent); text-underline-offset: 3px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
h1, h2, h3 { font-family: var(--head); font-weight: 700; line-height: 1.2; margin: 0; text-wrap: balance; letter-spacing: -0.01em; }
h1 { font-size: clamp(34px, 6.4vw, 58px); }
h2 { font-size: clamp(26px, 4.2vw, 36px); }
h3 { font-size: 21px; }
p { margin: 0; }
[lang="ja"] { font-family: var(--jp-sans); }
h1 [lang="ja"], h2 [lang="ja"], h3 [lang="ja"], .lc-title [lang="ja"], .cta-title [lang="ja"] { font-family: var(--jp-serif); }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 12px; top: 12px; background: var(--card); padding: 8px 12px; z-index: 10; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.wrap { max-width: 1080px; margin: 0 auto; padding-left: var(--gutter-l); padding-right: var(--gutter-r); }
section { padding-block: 72px; }
section.alt { background: var(--bg2); }
.eyebrow { font: 700 13px/1.4 var(--sys); letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); }
.eyebrow a { color: inherit; text-decoration: none; }
.lead { font-size: 20px; color: var(--soft); max-width: 38ch; }
.sec-head { display: grid; gap: 10px; margin-bottom: 36px; max-width: 46rem; }
.sec-head p { color: var(--soft); font-size: 18px; }
.muted { color: var(--soft); font-size: 15px; }
.mail { font-weight: 700; overflow-wrap: anywhere; user-select: all; }

/* ---------- Header ---------- */
.lp-header { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); padding-top: env(safe-area-inset-top, 0px); }
.lp-header .wrap { display: flex; align-items: center; gap: 18px; min-height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-family: var(--head); font-weight: 700; font-size: 22px; }
.brand img { width: 34px; height: 34px; border-radius: 9px; }
.lp-nav { display: flex; gap: 20px; margin-left: auto; font-size: 15px; font-weight: 600; }
.lp-nav a { color: var(--soft); text-decoration: none; }
.lp-nav a:hover { color: var(--ink); }
@media (max-width: 760px) { .lp-nav { gap: 14px; } .lp-nav a:not(:first-child) { display: none; } }

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 12px 22px; border-radius: 999px; background: var(--accent); color: var(--accent-ink); font: 700 16px/1.2 var(--sys); text-decoration: none; border: 0; cursor: pointer; }
.btn:hover { filter: brightness(1.06); }
.btn.small { min-height: 40px; padding: 8px 16px; font-size: 14px; margin-left: 4px; white-space: nowrap; }
.btn.ghost { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 2px var(--line); }
.pill { display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; border-radius: 999px; background: var(--wash); color: var(--ink); font: 700 14px/1.3 var(--sys); }
.pill::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

/* ---------- Home ---------- */
.hero { padding-block: 56px 72px; }
.hero .wrap { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
.hero-text { display: grid; gap: 20px; min-width: 0; }
.hero-art { display: flex; justify-content: center; min-width: 0; }
.hero.nf .wrap { grid-template-columns: 1fr; }
@media (max-width: 860px) { .hero .wrap { grid-template-columns: 1fr; gap: 40px; } .hero-text { text-align: center; justify-items: center; } .lead { margin-inline: auto; } .hero-actions { justify-content: center; } }
.shot { width: min(320px, 80vw); border-radius: 26px; box-shadow: 0 30px 60px -28px rgba(0,0,0,.45), 0 0 0 1px var(--line); display: block; }
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; list-style: none; padding: 0; margin: 0; counter-reset: step; }
.steps li { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 24px; display: grid; gap: 10px; align-content: start; counter-increment: step; }
.steps li::before { content: counter(step); width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; background: var(--wash); color: var(--accent); font: 800 17px/1 var(--sys); }
.steps p { color: var(--soft); }
@media (max-width: 760px) { .steps { grid-template-columns: 1fr; } }
.gallery { display: flex; gap: 22px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 8px 4px 24px; margin: 0; list-style: none; }
.gallery li { flex: 0 0 auto; scroll-snap-align: center; display: grid; gap: 14px; justify-items: center; align-content: start; text-align: center; width: 250px; }
.gallery .shot { width: 250px; border-radius: 22px; }
.gallery span { color: var(--soft); font-size: 15px; line-height: 1.45; }
.gallery-hint { color: var(--soft); font-size: 14px; text-align: center; margin-top: 4px; }
.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.feature { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 24px; display: grid; gap: 8px; align-content: start; }
.feature .ico { width: 44px; height: 44px; border-radius: 14px; background: var(--wash); display: grid; place-items: center; font: 700 22px/1 var(--jp-serif); color: var(--accent); }
.feature p { color: var(--soft); }
@media (max-width: 900px) { .features { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .features { grid-template-columns: 1fr; } }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.split > * { min-width: 0; }
.split .copy { display: grid; gap: 16px; }
.split .copy p { color: var(--soft); font-size: 18px; }
.split .art { display: flex; justify-content: center; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }
.plans { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.plan { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 28px; display: grid; gap: 14px; align-content: start; }
.plan.pro { box-shadow: inset 0 0 0 2px var(--accent); }
.plan .tag { justify-self: start; }
.plan ul { margin: 0; padding-left: 1.2em; display: grid; gap: 6px; }
@media (max-width: 760px) { .plans { grid-template-columns: 1fr; } }
.band { background: var(--night); color: var(--night-ink); }
.band h2, .band h3 { color: var(--night-ink); }
.band .eyebrow { color: var(--night-soft); }
.band .sec-head p, .band p { color: var(--night-soft); }
.band .feature { background: color-mix(in srgb, var(--night) 80%, #ffffff 8%); border-color: color-mix(in srgb, var(--night) 70%, #ffffff 18%); }
.band .feature .ico { background: color-mix(in srgb, var(--night) 60%, #ffffff 14%); color: var(--night-ink); }
.faq { max-width: 760px; }
.faq details { border-top: 1px solid var(--line); padding-block: 18px; }
.faq details:last-of-type { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; font-weight: 700; font-size: 18px; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent); font-size: 24px; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details > *:not(summary) { margin-top: 10px; color: var(--soft); }
.faq ul { padding-left: 1.2em; }
.cta { text-align: center; display: grid; gap: 18px; justify-items: center; }
.cta img { width: 96px; height: 96px; border-radius: 24px; box-shadow: 0 16px 30px -16px rgba(0,0,0,.4); }
.more-link { margin-top: 28px; text-align: center; }

/* ---------- Lesson cards ---------- */
.lgrid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); gap: 16px; }
.lgrid li { min-width: 0; }
.lcard { display: flex; gap: 16px; align-items: center; height: 100%; padding: 14px; border-radius: var(--r); background: var(--card); border: 1px solid var(--line); color: var(--ink); text-decoration: none; transition: transform .15s ease, box-shadow .15s ease; }
.lcard:hover { transform: translateY(-2px); box-shadow: 0 14px 30px -20px rgba(0,0,0,.35); }
.lc-glyph { flex: none; width: 76px; height: 76px; border-radius: 14px; background: var(--paper); display: grid; place-items: center; }
.lc-glyph svg { width: 60px; height: 60px; }
.lc-glyph .glyph-text { font: 700 44px/1 var(--jp-serif); }
.lc-body { display: grid; gap: 4px; min-width: 0; }
.lc-cat { font: 700 12px/1.3 var(--sys); letter-spacing: .07em; text-transform: uppercase; color: var(--accent); }
.lc-title { font: 700 17px/1.35 var(--head); margin: 0; letter-spacing: 0; }
svg.glyph .s path, svg.strokes .s path { fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; }
svg.glyph .s path { stroke-width: 5; }

/* ---------- Index pages ---------- */
.index-head { padding-block: 40px 24px; }
.index-head .wrap { display: grid; gap: 16px; }
.index-head .lead { max-width: 60ch; }
.index-list { padding-block: 8px 80px; }
.chips { list-style: none; margin: 4px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chip { display: inline-block; padding: 8px 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--card); color: var(--ink); text-decoration: none; font: 600 15px/1.2 var(--sys); }
.chip:hover { border-color: var(--accent); }
.search { max-width: 520px; }
.search input { width: 100%; font: 17px/1.4 var(--sys); padding: 12px 16px; border-radius: 999px; border: 1px solid var(--line); background: var(--card); color: var(--ink); }
.search-empty { margin-top: 10px; color: var(--soft); }
.crumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; font-size: 14px; color: var(--soft); }
.crumbs li + li::before { content: "›"; margin-right: 6px; color: var(--faint); }
.crumbs a { color: var(--soft); }
.crumbs [aria-current] { display: none; }

/* ---------- Lesson page ---------- */
.lesson-head { padding-block: 36px 8px; }
.lesson-head .wrap { display: grid; gap: 14px; max-width: 1080px; }
.lesson-head h1 { font-size: clamp(32px, 5.6vw, 52px); max-width: 22ch; }
.lesson-meta { color: var(--soft); font-size: 15px; }
.prose { padding-block: 20px 64px; font-size: 18px; line-height: 1.72; }
.prose > * { max-width: 680px; }
.prose > * + * { margin-top: 1.1em; }
.prose h2 { margin-top: 2em; }
.prose h3 { margin-top: 1.6em; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li + li { margin-top: .35em; }
.prose blockquote { margin-left: 0; margin-right: 0; padding: 16px 20px; border-left: 4px solid var(--accent); background: var(--wash); border-radius: 0 12px 12px 0; }
.prose blockquote > * + * { margin-top: .6em; }
.prose strong { font-weight: 700; }
.prose ruby rt { font-size: 0.55em; color: var(--soft); }
.prose span[lang="ja"]:not([class]) { font-size: 1.04em; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 14px; background: var(--card); }
.prose table { border-collapse: collapse; width: 100%; font-size: 16px; }
.prose th, .prose td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
.prose th { font: 700 13px/1.3 var(--sys); text-transform: uppercase; letter-spacing: .06em; color: var(--soft); background: var(--bg2); }
.prose tr:last-child td { border-bottom: 0; }
.prose td span[lang="ja"]:not([class]) { font-size: 1.15em; }
.examples { list-style: none; padding: 0 !important; display: grid; gap: 12px; }
.examples li { margin: 0 !important; padding: 14px 18px; border-radius: 14px; background: var(--card); border: 1px solid var(--line); }
.ex-ja { font-size: 21px; line-height: 1.6; }
.ex-ro { color: var(--soft); font-style: italic; font-size: 16px; }
.ex-en { font-size: 16px; }
.byline { color: var(--soft); font-size: 15px; border-top: 1px solid var(--line); padding-top: 18px; margin-top: 2.4em !important; }
.sources ul { font-size: 15px; color: var(--soft); }

.lesson-video { margin: 0; display: grid; gap: 10px; justify-items: center; }
.lesson-video video { width: min(340px, 100%); aspect-ratio: 9 / 16; height: auto; border-radius: 24px; background: var(--paper); box-shadow: 0 30px 60px -30px rgba(0,0,0,.5), 0 0 0 1px var(--line); display: block; }
.lesson-video figcaption { color: var(--soft); font-size: 14px; text-align: center; max-width: 34ch; }
.prose > .lesson-video { margin-top: 1.6em; margin-bottom: .6em; max-width: 680px; }
@media (min-width: 1000px) {
  .prose.has-video { display: grid; grid-template-columns: minmax(0, 680px) 340px; column-gap: 56px; justify-content: space-between; }
  .prose.has-video > * { grid-column: 1; }
  .prose.has-video > .lesson-video { grid-column: 2; grid-row: 1 / span 80; align-self: start; position: sticky; top: 92px; margin: 0; }
}

/* ---------- Kanji cards ---------- */
.kanji-section > * + * { margin-top: 14px; }
.kgrid { display: grid; grid-template-columns: 1fr; gap: 14px; }
.kcard { margin: 0; display: grid; grid-template-columns: 128px minmax(0, 1fr); gap: 20px; padding: 16px; border-radius: var(--r); background: var(--card); border: 1px solid var(--line); align-items: start; }
.kc-art { display: grid; gap: 10px; justify-items: center; }
.kc-art svg, .kc-art .glyph-text { width: 128px; height: 128px; border-radius: 12px; background-color: var(--paper);
  background-image: linear-gradient(var(--grid), var(--grid)), linear-gradient(var(--grid), var(--grid));
  background-size: 100% 1px, 1px 100%; background-position: center; background-repeat: no-repeat; display: grid; place-items: center; }
.kc-art .glyph-text { font: 700 84px/1 var(--jp-serif); }
svg.strokes .s path { stroke-width: 3.6; }
svg.strokes .n text { font: 600 7px/1 var(--sys); fill: var(--accent); paint-order: stroke; stroke: var(--paper); stroke-width: 2px; }
svg.strokes.play .s path { stroke-dasharray: 1; stroke-dashoffset: 1; opacity: 0; animation: draw .55s ease both; }
svg.strokes.play .n { opacity: 0; }
@keyframes draw { 0% { stroke-dashoffset: 1; opacity: 0; } 1% { opacity: 1; } 100% { stroke-dashoffset: 0; opacity: 1; } }
@media (prefers-reduced-motion: reduce) { svg.strokes.play .s path { animation-duration: .01s; } }
.kc-play { font: 700 13px/1 var(--sys); padding: 8px 12px; border-radius: 999px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); cursor: pointer; }
.kc-play:hover { border-color: var(--accent); }
.kc-info { display: grid; gap: 10px; min-width: 0; font-size: 15px; line-height: 1.5; }
.kc-mean { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; font-weight: 700; font-size: 17px; }
.kc-char { font: 700 30px/1 var(--jp-serif); }
.kc-facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px 18px; margin: 0; }
.kc-facts div { display: grid; gap: 0; }
.kc-facts dt { color: var(--faint); font-size: 12px; text-transform: uppercase; letter-spacing: .07em; }
.kc-facts dd { margin: 0; overflow-wrap: anywhere; }
.kc-facts a { color: inherit; text-decoration-color: var(--line); }
.kc-word { color: var(--soft); }
.kc-label { display: block; color: var(--faint); font-size: 12px; text-transform: uppercase; letter-spacing: .07em; }
.kana { color: var(--soft); }
@media (max-width: 520px) {
  .kcard { grid-template-columns: 92px minmax(0, 1fr); gap: 14px; padding: 14px; }
  .kc-art svg, .kc-art .glyph-text { width: 92px; height: 92px; }
  .kc-art .glyph-text { font-size: 60px; }
  .kc-facts { grid-template-columns: 1fr; }
}

/* ---------- Widget call to action ---------- */
.cta-widget { margin-top: 2.6em !important; display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 28px; align-items: center; padding: 26px; border-radius: 26px; background: var(--night); color: var(--night-ink); max-width: 680px; }
.cta-widget .muted, .cta-widget p { color: var(--night-soft); font-size: 15px; }
.cta-widget .cta-copy { display: grid; gap: 12px; min-width: 0; }
.cta-title { font: 700 24px/1.25 var(--head); color: var(--night-ink) !important; }
.cta-widget .pill { background: rgba(255,255,255,.12); color: var(--night-ink); }
.w-medium { display: grid; grid-template-columns: 112px minmax(0, 1fr); gap: 14px; padding: 12px; border-radius: 22px; background: #F5F0E6; color: #1C1B1A; box-shadow: 0 18px 40px -20px rgba(0,0,0,.6); font-family: var(--sys); }
.w-tile { position: relative; border-radius: 14px; background: #EAE3D3; display: grid; place-items: center; aspect-ratio: 1; }
.w-level { position: absolute; top: 8px; left: 9px; font: 700 10px/1 var(--sys); color: #B8432B; }
.w-glyph { font: 400 62px/1 var(--jp-serif); color: #1C1B1A; }
.w-text { display: grid; gap: 2px; align-content: start; min-width: 0; }
.w-label { font-size: 11px; color: #5B554C; }
.w-text b { font-size: 16px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.w-read { font-size: 12px; color: #5B554C; }
.w-btns { display: flex; gap: 6px; margin-top: 10px; }
.w-btns span { flex: 1; text-align: center; padding: 7px 4px; border-radius: 10px; font: 600 11px/1.2 var(--sys); box-shadow: inset 0 0 0 1.5px #1C1B1A; white-space: nowrap; }
.w-btns .dark { background: #1C1B1A; color: #F5F0E6; }
@media (max-width: 640px) { .cta-widget { grid-template-columns: 1fr; padding: 20px; } .w-medium { max-width: 320px; } }

.more { padding-block: 56px 72px; }
.more h2 { margin-bottom: 22px; }

/* ---------- Footer ---------- */
.lp-footer { border-top: 1px solid var(--line); color: var(--soft); font-size: 14px; }
.lp-footer .wrap { padding-block: 28px 44px; display: grid; gap: 8px; }
.lp-footer a { color: inherit; }
.foot-links a { font-weight: 600; }