:root{
  --home-bg:#f5eedf;
  --home-bg-soft:#ebe0cb;
  --home-ink:var(--tl-ink,#172833);
  --home-muted:var(--tl-ink-soft,#52616a);
  --home-seal:var(--tl-seal,#a53b2e);
  --home-gold:#946f35;
  --home-paper:rgba(255,252,244,.78);
  --home-paper-strong:rgba(255,253,248,.92);
  --home-border:rgba(82,74,60,.18);
  --home-shadow:0 26px 72px rgba(44,50,49,.13),inset 0 1px rgba(255,255,255,.78);
}
html[data-mode="dark"]{
  --home-bg:#07131f;
  --home-bg-soft:#0b2032;
  --home-ink:#f4f0e7;
  --home-muted:#bcc8ca;
  --home-seal:#f09a83;
  --home-gold:#dfbd75;
  --home-paper:rgba(7,24,39,.72);
  --home-paper-strong:rgba(7,22,36,.9);
  --home-border:rgba(221,235,235,.17);
  --home-shadow:0 28px 76px rgba(0,0,0,.36),inset 0 1px rgba(255,255,255,.07);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;min-width:320px;background:var(--home-bg);color:var(--home-ink);font-family:var(--tl-font-ui,"Be Vietnam Pro",sans-serif);font-size:16px;line-height:1.65;overflow-x:hidden;transition:background-color .3s,color .3s}
body::before{content:"";position:fixed;inset:0;z-index:-2;background:url("/anh-art/nen-web-sang-1672.webp") center top/cover no-repeat;opacity:.58;transition:opacity .3s}
html[data-mode="dark"] body::before{background-image:url("/anh-art/nen-web-toi-1672.webp");opacity:.7}
body::after{content:"";position:fixed;inset:0;z-index:-1;background:linear-gradient(180deg,transparent 0,var(--home-bg) 86%);pointer-events:none}
a{color:inherit}
button,a,summary{touch-action:manipulation}
img{display:block;max-width:100%}
.skip-link:not(:focus){position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link:focus{position:fixed;top:10px;left:10px;z-index:100000;padding:12px 16px;border-radius:12px;background:var(--home-ink);color:var(--home-bg);font-weight:800;text-decoration:none}
:focus-visible{outline:3px solid var(--tl-focus,#1f7087);outline-offset:4px}

.home-header{position:relative;z-index:20;width:min(1240px,calc(100% - 32px));min-height:82px;margin:16px auto 0;padding:12px 78px 12px 14px;display:flex;align-items:center;justify-content:space-between;gap:24px;border:1px solid var(--home-border);border-radius:22px;background:var(--home-paper);box-shadow:0 12px 40px rgba(23,40,51,.08);backdrop-filter:blur(var(--tl-blur,18px));-webkit-backdrop-filter:blur(var(--tl-blur,18px))}
.brand{min-height:52px;display:inline-flex;align-items:center;gap:12px;text-decoration:none}
.brand-seal{width:48px;height:52px;display:grid;place-items:center;border-radius:10px;background:var(--home-seal);color:#fff8e8;font:900 17px/1.08 var(--tl-font-jp,serif);box-shadow:0 8px 20px rgba(165,59,46,.23)}
.brand-copy{display:grid;line-height:1.12}
.brand-copy strong{font-family:var(--tl-font-jp,serif);font-size:20px;letter-spacing:.01em}
.brand-copy small{margin-top:6px;color:var(--home-muted);font:700 9px/1 var(--tl-font-mono,monospace);letter-spacing:.18em}
.home-shortcuts{display:flex;align-items:center;gap:10px}
.home-shortcuts a{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 15px;border-radius:12px;font-weight:800;text-decoration:none}
.home-shortcuts>a:first-child{color:var(--home-muted)}
.header-cta{background:var(--home-ink);color:var(--home-bg)!important}

main{display:grid;gap:clamp(72px,9vw,126px);padding-bottom:clamp(72px,9vw,118px)}
.hero{position:relative;width:min(1240px,calc(100% - 32px));min-height:clamp(540px,calc(100svh - 126px),680px);margin:16px auto 0;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(380px,.85fr);align-items:stretch;overflow:hidden;border:1px solid var(--home-border);border-radius:34px;background:var(--home-paper);box-shadow:var(--home-shadow);isolation:isolate}
.hero::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(90deg,var(--home-paper-strong) 0%,var(--home-paper-strong) 49%,rgba(255,252,244,.34) 69%,transparent 86%);pointer-events:none}
html[data-mode="dark"] .hero::before{background:linear-gradient(90deg,var(--home-paper-strong) 0%,var(--home-paper-strong) 50%,rgba(7,22,36,.5) 70%,rgba(7,22,36,.08) 90%)}
.hero-art{position:absolute;inset:0 0 0 39%;z-index:0;overflow:hidden}
.hero-art::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,transparent 55%,var(--home-paper) 100%)}
.hero-art img{width:100%;height:100%;object-fit:cover;object-position:53% 50%;filter:saturate(.92) contrast(.95)}
html[data-mode="dark"] .hero-art img{filter:saturate(.78) brightness(.57) contrast(1.08)}
.hero-kanji{position:absolute;right:clamp(18px,4vw,56px);top:clamp(18px,5vw,54px);z-index:2;color:rgba(113,43,33,.62);font:900 clamp(86px,12vw,176px)/1 var(--tl-font-shodo,var(--tl-font-jp));text-shadow:0 1px rgba(255,255,255,.4)}
html[data-mode="dark"] .hero-kanji{color:rgba(242,188,132,.38);text-shadow:none}
.hero-copy{position:relative;z-index:3;grid-column:1;padding:clamp(36px,4.5vw,60px) clamp(26px,5vw,66px);display:flex;flex-direction:column;justify-content:center;align-items:flex-start}
.eyebrow{margin:0;color:var(--home-seal);font:700 var(--tl-text-meta,11px)/1.5 var(--tl-font-mono,monospace);letter-spacing:.18em;text-transform:uppercase}
.eyebrow span[lang="ja"]{font-family:var(--tl-font-jp,serif);letter-spacing:.12em}
.hero h1,.section-heading h2,.lesson-demo h2{margin:0;font-family:var(--tl-font-jp,serif);font-weight:700;letter-spacing:-.035em;text-wrap:balance}
.hero h1{margin-top:16px;font-size:clamp(48px,5vw,68px);line-height:1.01}
.hero h1 em{color:var(--home-seal);font-style:normal}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.button{min-height:52px;display:inline-flex;align-items:center;justify-content:center;gap:20px;padding:0 22px;border:1px solid transparent;border-radius:14px;font-weight:800;text-decoration:none;transition:transform .2s,box-shadow .2s,background-color .2s}
.button:hover{transform:translateY(-2px)}
.button-primary{background:var(--home-seal);color:#fffaf0;box-shadow:0 12px 30px rgba(165,59,46,.24)}
html[data-mode="dark"] .button-primary{color:#132632;box-shadow:0 12px 30px rgba(0,0,0,.28)}
.button-secondary{border-color:var(--home-border);background:rgba(255,255,255,.18);color:var(--home-ink)}
.hero-caption{position:absolute;right:24px;bottom:22px;z-index:3;margin:0;display:flex;gap:10px;align-items:center;padding:9px 13px;border:1px solid rgba(255,255,255,.5);border-radius:999px;background:rgba(255,252,244,.74);color:#283f47;backdrop-filter:blur(12px);font-size:12px}
.hero-caption span:first-child{font-family:var(--tl-font-jp,serif);font-weight:800;color:#8f372c}

.section-shell{width:min(1120px,calc(100% - 40px));margin:0 auto}
.section-heading{max-width:710px}
.section-heading h2,.lesson-demo h2{margin-top:12px;font-size:clamp(36px,5vw,62px);line-height:1.08}
.section-heading>p:last-child{margin:16px 0 0;color:var(--home-muted);font-size:18px}
.path-list{margin-top:40px;border-top:1px solid var(--home-border)}
.path-item{border-bottom:1px solid var(--home-border)}
.path-item summary{min-height:88px;display:grid;grid-template-columns:58px minmax(0,1fr) 44px;gap:18px;align-items:center;padding:14px 4px;cursor:pointer;list-style:none}
.path-item summary::-webkit-details-marker{display:none}
.path-mark{width:52px;height:52px;display:grid;place-items:center;border:1px solid color-mix(in srgb,var(--home-seal) 38%,transparent);border-radius:15px;color:var(--home-seal);background:var(--tl-wash,rgba(165,59,46,.075));font:900 23px var(--tl-font-jp,serif)}
.path-item summary strong{display:block;font-family:var(--tl-font-jp,serif);font-size:clamp(21px,2.3vw,30px);line-height:1.25}
.path-plus{width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--home-border);border-radius:50%;font-size:22px;transition:transform .25s}
.path-item[open] .path-plus{transform:rotate(45deg)}
.path-panel{padding:0 4px 28px 80px}
.path-panel>p{max-width:650px;margin:0;color:var(--home-muted)}
.path-panel nav{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px}
.path-panel a{min-height:44px;display:inline-flex;align-items:center;padding:0 14px;border:1px solid var(--home-border);border-radius:12px;background:var(--home-paper);font-size:14px;font-weight:800;text-decoration:none}
.path-panel a:first-child{border-color:color-mix(in srgb,var(--home-seal) 48%,transparent);color:var(--home-seal)}

.lesson-demo-heading{max-width:760px}
.lesson-demo-heading>p:last-child{margin:15px 0 0;color:var(--home-muted);font-size:17px}
.lesson-sample{position:relative;margin-top:34px;display:grid;grid-template-columns:.8fr 1.2fr;overflow:hidden;border:1px solid var(--home-border);border-radius:30px;background:var(--home-paper);box-shadow:var(--home-shadow)}
.lesson-sample::before{content:"約";position:absolute;left:-30px;bottom:-74px;color:var(--tl-wash,rgba(165,59,46,.075));font:900 260px/1 var(--tl-font-shodo,var(--tl-font-jp));pointer-events:none}
.lesson-word,.lesson-example{position:relative;z-index:1;padding:clamp(26px,4vw,48px)}
.lesson-word{display:flex;flex-direction:column;justify-content:center;border-right:1px solid var(--home-border);background:linear-gradient(145deg,var(--tl-wash,rgba(165,59,46,.075)),transparent 70%)}
.lesson-kicker{margin:0;color:var(--home-seal);font:700 10px/1.5 var(--tl-font-mono,monospace);letter-spacing:.16em}
.lesson-jp{margin:20px 0 0;font:700 clamp(42px,5.5vw,70px)/1.18 var(--tl-font-jp,serif);letter-spacing:.02em}
.lesson-jp rt,.example-ja rt{font-size:max(.42em,11px);color:var(--home-muted)}
.lesson-controls{display:flex;flex-wrap:wrap;gap:9px;margin-top:26px}
.listen-button,.meaning-button{min-width:44px;min-height:48px;display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:0 15px;border:1px solid var(--home-border);border-radius:13px;background:var(--home-paper-strong);color:var(--home-ink);font:800 14px var(--tl-font-ui,sans-serif);cursor:pointer}
.listen-button{border-color:color-mix(in srgb,var(--home-seal) 42%,transparent);color:var(--home-seal)}
.listen-button[aria-pressed="true"]{background:var(--home-seal);color:#fffaf0}
html[data-mode="dark"] .listen-button[aria-pressed="true"]{color:#132632}
.lesson-example{display:flex;flex-direction:column;justify-content:center}
.example-ja{margin:18px 0 0;font:600 clamp(23px,3vw,34px)/1.75 var(--tl-font-jp,serif);text-wrap:pretty}
.example-ja>span{display:inline-block;white-space:nowrap}
.listen-sentence{align-self:flex-start;margin-top:20px}
.lesson-meaning{margin-top:20px;padding:17px 0 0;border-top:1px solid var(--home-border);color:var(--home-muted)}
.lesson-meaning[hidden]{display:none}
.lesson-meaning p{margin:0}
.lesson-meaning p+p{margin-top:6px}
.lesson-meaning strong{color:var(--home-ink)}
.audio-status{min-height:24px;margin:12px 0 0;color:var(--home-muted);font-size:12px}
.lesson-link{min-height:48px;align-self:flex-start;display:inline-flex;align-items:center;gap:14px;margin-top:8px;border-bottom:2px solid var(--home-seal);color:var(--home-seal);font-weight:800;text-decoration:none}

.home-footer{width:min(1120px,calc(100% - 40px));margin:0 auto;padding:36px 0 calc(34px + env(safe-area-inset-bottom));display:grid;grid-template-columns:auto 1fr;gap:26px 44px;border-top:1px solid var(--home-border);color:var(--home-muted)}
.footer-brand{min-height:44px;display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--home-ink)}
.footer-brand span{color:var(--home-seal);font:900 20px var(--tl-font-jp,serif)}
.footer-brand strong{font-size:15px}
.home-footer nav{display:flex;justify-content:flex-end;flex-wrap:wrap;gap:8px 22px}
.home-footer nav a{min-width:44px;min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 8px;font-size:13px;font-weight:700;text-decoration:none}
.home-footer>p{grid-column:1/-1;margin:0;font-size:12px}

html[data-mode="dark"] #th-fab{box-shadow:0 8px 26px rgba(0,0,0,.42),inset 0 0 0 1px rgba(255,255,255,.42)}
html[data-mode="light"] #th-overlay{background:rgba(23,40,51,.24)}
#th-drawer .th-acct a{color:inherit!important}
#th-drawer .tl-settings>summary{color:inherit}

@media(max-width:900px){
  .hero{min-height:760px;grid-template-columns:1fr;align-items:end}
  .hero::before{background:linear-gradient(180deg,rgba(255,252,244,.05) 0%,var(--home-paper-strong) 49%,var(--home-paper-strong) 100%)}
  html[data-mode="dark"] .hero::before{background:linear-gradient(180deg,rgba(7,22,36,.06) 0%,var(--home-paper-strong) 49%,var(--home-paper-strong) 100%)}
  .hero-art{inset:0 0 40% 0}
  .hero-copy{grid-column:1;padding-top:330px;justify-content:flex-end}
  .hero-caption{top:24px;bottom:auto}
  .lesson-sample{grid-template-columns:1fr}
  .lesson-word{border-right:0;border-bottom:1px solid var(--home-border)}
}
@media(max-width:620px){
  .home-header{width:calc(100% - 20px);min-height:72px;margin-top:10px;padding:9px 65px 9px 10px;border-radius:18px}
  .brand-seal{width:43px;height:46px;font-size:15px}
  .brand-copy strong{font-size:18px}
  .brand-copy small{font-size:8px}
  .home-shortcuts>a:first-child{display:none}
  .header-cta{padding:0 12px!important;font-size:13px}
  main{gap:76px}
  .hero{width:calc(100% - 20px);min-height:650px;margin-top:10px;border-radius:26px}
  .hero-art{inset:0 0 48% 0}
  .hero-art img{object-position:48% center}
  .hero-kanji{top:16px;right:18px;font-size:86px}
  .hero-copy{padding:270px 20px 24px;justify-content:flex-end}
  .hero h1{font-size:clamp(40px,11.5vw,50px)}
  .hero-actions{width:100%;margin-top:22px}
  .button{width:100%}
  .hero-caption{top:19px;right:16px;font-size:11px}
  .section-shell{width:calc(100% - 28px)}
  .section-heading h2,.lesson-demo h2{font-size:38px}
  .path-list{margin-top:28px}
  .path-item summary{min-height:78px;grid-template-columns:46px minmax(0,1fr) 44px;gap:12px}
  .path-mark{width:44px;height:44px;border-radius:12px;font-size:20px}
  .path-item summary strong{font-size:19px}
  .path-panel{padding-left:58px}
  .path-panel nav{display:grid;grid-template-columns:1fr 1fr}
  .path-panel a{justify-content:center;text-align:center}
  .lesson-word,.lesson-example{padding:27px 21px}
  .lesson-jp{font-size:48px}
  .example-ja{font-size:23px;line-height:1.7}
  .home-footer{width:calc(100% - 32px);grid-template-columns:1fr}
  .home-footer nav{justify-content:flex-start}
}
@media(max-width:365px){
  .brand-copy small{display:none}
  .hero-copy{padding-left:18px;padding-right:18px}
  .path-panel{padding-left:0}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}
@media(prefers-reduced-transparency:reduce){
  .home-header,.hero,.path-panel a,.lesson-sample{backdrop-filter:none;-webkit-backdrop-filter:none;background:var(--home-paper-strong)}
}
@media(forced-colors:active){
  .home-header,.hero,.path-item,.path-panel a,.lesson-sample{border:1px solid CanvasText}
  .button-primary{border:2px solid ButtonText}
}