/* Layout: one sticky "data stage" hero, then alternating bands where every claim carries a number you can move. */
    :root{
      --navy:#004aad; --deep:#00214f; --night:#00142f;
      --gold:#C9A84C; --gold-deep:#b8952f; --gold-soft:#e7d7a6;
      --paper:#F7F4EF; --white:#ffffff; --ink:#12161f; --body:#3a4252; --muted:#646d80;
      --mist:#a9bbdb; --line-dark:rgba(247,244,239,.16); --line-light:rgba(18,22,31,.13);
      --hollow:#6f9be8;
      --display:'Funnel Display',system-ui,-apple-system,'Segoe UI',sans-serif;
      --text:'Funnel Sans',system-ui,-apple-system,'Segoe UI',sans-serif;
      --max:1200px; --gut:clamp(16px,4.5vw,48px);
      --stretch:clamp(72%, 60% + 3vw, 112%);
    }
    *{box-sizing:border-box}
    html{-webkit-text-size-adjust:100%}
    html,body{margin:0;max-width:100%;overflow-x:clip}
    body{font-family:var(--text);color:var(--body);background:var(--paper);font-size:clamp(16px,1.05vw + 11px,18px);line-height:1.6}
    img{max-width:100%;display:block}
    h1,h2,h3{overflow-wrap:break-word;hyphens:auto}
    a{color:inherit}
    .wrap{max-width:var(--max);margin:0 auto;padding-left:var(--gut);padding-right:var(--gut)}
    :focus-visible{outline:3px solid var(--gold);outline-offset:3px;border-radius:4px}
    .sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
    .tab{font-variant-numeric:tabular-nums}

    header.top{position:fixed;inset:0 0 auto 0;z-index:50;transition:background .3s, box-shadow .3s}
    header.top .wrap{display:flex;align-items:center;gap:28px;height:72px}
    header.top .brand img{height:40px;width:auto}
    .logo-ink{display:none}
    header.top.solid{background:rgba(247,244,239,.95);box-shadow:0 1px 0 var(--line-light);backdrop-filter:blur(8px)}
    header.top.solid .logo-light{display:none} header.top.solid .logo-ink{display:block}
    .navlinks{display:flex;gap:22px;margin-left:auto}
    .navlinks a{text-decoration:none;font-size:15px;font-weight:500;color:rgba(247,244,239,.85)}
    .navlinks a:hover{color:var(--white)}
    header.top.solid .navlinks a{color:var(--body)} header.top.solid .navlinks a:hover{color:var(--ink)}
    .lang-toggle{background:none;border:1px solid var(--line-dark);color:rgba(247,244,239,.88);font:600 13px var(--text);padding:6px 11px;border-radius:999px;cursor:pointer}
    header.top.solid .lang-toggle{border-color:var(--line-light);color:var(--body)}
    .lang-toggle .lang-sep{opacity:.5;margin:0 3px} .lang-toggle .lang-other{opacity:.6}
    .menu-btn{display:none;background:none;border:0;padding:8px;cursor:pointer;color:var(--paper)}
    header.top.solid .menu-btn{color:var(--ink)}
    .menu-btn svg{width:24px;height:24px;stroke:currentColor;stroke-width:2;fill:none}
    .mobile-panel{display:none}
    @media (max-width:920px){
      .navlinks{display:none} .menu-btn{display:block} .lang-toggle{margin-left:auto}
      .mobile-panel.open{display:flex;flex-direction:column;padding:8px var(--gut) 20px;background:var(--paper);border-bottom:1px solid var(--line-light)}
      .mobile-panel a{padding:11px 0;text-decoration:none;color:var(--ink);font-weight:600}
      header.top:has(.mobile-panel.open){background:var(--paper)}
      header.top:has(.mobile-panel.open) .logo-light{display:none}
      header.top:has(.mobile-panel.open) .logo-ink{display:block}
      header.top:has(.mobile-panel.open) .menu-btn{color:var(--ink)}
    }

    .btn{display:inline-flex;align-items:center;justify-content:center;font:600 16px var(--text);padding:15px 24px;border-radius:999px;text-decoration:none;cursor:pointer;border:0;transition:transform .15s, background .2s}
    .btn:active{transform:translateY(1px)}
    .btn-gold{background:var(--gold);color:var(--ink)} .btn-gold:hover{background:#d6b866}
    .btn-ghost{background:transparent;color:var(--paper);box-shadow:inset 0 0 0 1.5px rgba(247,244,239,.4)} .btn-ghost:hover{box-shadow:inset 0 0 0 1.5px var(--paper)}
    .actions{display:flex;flex-wrap:wrap;gap:12px}

    /* bands */
    section.s{padding-block:clamp(72px,10vw,136px)}
    .h2{font-family:var(--display);font-stretch:var(--stretch);font-weight:800;font-size:clamp(34px,4.6vw,64px);line-height:.98;letter-spacing:-.01em;color:var(--ink);margin:0 0 20px;max-width:18ch;text-wrap:balance}
    .intro{font-size:clamp(17px,1.3vw,20px);max-width:56ch;margin:0}
    .dark{background:var(--deep);color:rgba(247,244,239,.82)} .dark .h2{color:var(--paper)}
    .white{background:var(--white)}
    .note{font-size:13.5px;color:var(--muted);margin:14px 0 0;max-width:70ch}
    .dark .note{color:var(--mist)}
    .note a{color:inherit}

    .ctrl{display:grid;gap:4px}
    .ctrl label{font-size:14.5px;font-weight:600;color:var(--ink);display:flex;justify-content:space-between;gap:12px}
    .ctrl label output{font-variant-numeric:tabular-nums;color:var(--navy);white-space:nowrap}
    input[type=range]{width:100%;accent-color:var(--navy);height:28px;margin:0}

    /* lessons */
    .lessons{margin-top:44px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
    .lesson{display:flex;flex-direction:column;gap:8px;text-decoration:none;padding:26px;border-radius:24px;background:var(--paper);border:1px solid var(--line-light);transition:border-color .2s, transform .2s}
    a.lesson:hover{border-color:var(--navy);transform:translateY(-2px)}
    .lesson .k{font-size:14px;color:var(--navy);font-weight:700}
    .lesson h3{margin:0;font-family:var(--display);font-stretch:var(--stretch);font-size:clamp(22px,2vw,28px);font-weight:800;line-height:1.05;color:var(--ink)}
    .lesson p{margin:0;font-size:15.5px}
    .lesson.soon{background:var(--gold);border-color:var(--gold)}
    .lesson.soon .k{color:#5a4300}
    @media (max-width:900px){.lessons{grid-template-columns:1fr}}

    /* final */
    .final{background:var(--gold);padding-block:clamp(84px,11vw,140px)}
    .final .h2{max-width:16ch;font-size:clamp(40px,6vw,88px);color:var(--ink)}
    .final p{color:#3b3110;max-width:52ch;font-size:clamp(17px,1.3vw,20px);margin:0 0 30px}
    .btn-ink{background:var(--ink);color:var(--paper)} .btn-ink:hover{background:#000}
    .btn-line{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--ink)}
    .final .mail{margin:18px 0 0;font-size:15px}

    footer{background:var(--paper);padding-block:48px;border-top:1px solid var(--line-light);font-size:14.5px}
    .foot{display:flex;flex-wrap:wrap;gap:28px 48px;justify-content:space-between}
    .foot-logo{height:28px;width:auto;margin-bottom:10px}
    .foot-links{display:flex;flex-wrap:wrap;gap:8px 18px;max-width:520px}
    .foot-links a{text-decoration:none;color:var(--body)} .foot-links a:hover{color:var(--ink)}

    
    /* page hero for inner pages */
    .page-hero{background:radial-gradient(900px 600px at 85% 30%, rgba(0,74,173,.55), transparent 70%),linear-gradient(180deg,var(--deep),var(--night));color:rgba(247,244,239,.86);padding-block:clamp(130px,16vw,190px) clamp(64px,8vw,104px)}
    .page-hero .kicker{color:var(--mist);font-size:clamp(15px,1.2vw,18px);font-weight:500;margin:0 0 14px}
    .page-hero h1{margin:0;color:var(--paper);font-family:var(--display);font-stretch:var(--stretch);font-weight:800;line-height:.95;letter-spacing:-.01em;font-size:clamp(42px,6vw,84px);max-width:16ch;text-wrap:balance}
    .page-hero h1 .g{color:var(--gold)}
    .page-hero .lead{color:rgba(247,244,239,.84);font-size:clamp(16px,1.3vw,20px);max-width:52ch;margin:22px 0 0}
    .page-hero .actions{margin-top:28px}
    .navlinks a[aria-current="page"]{color:var(--white);box-shadow:inset 0 -2px 0 var(--gold)}
    header.top.solid .navlinks a[aria-current="page"]{color:var(--ink)}

    /* footer social */
    .foot-social{display:flex;flex-wrap:wrap;gap:6px 14px;margin-top:10px}
    .foot-social a{color:var(--navy);text-decoration:none;font-weight:600} .foot-social a:hover{text-decoration:underline}

    /* ---------- motion layer (motion.js adds .mo to <html>) ---------- */
    .readbar{position:fixed;top:0;left:0;right:0;height:3px;background:var(--gold);transform-origin:0 50%;transform:scaleX(0);z-index:70;pointer-events:none}
    .page-hero{position:relative;overflow:hidden}
    .page-hero > .wrap{position:relative;z-index:1}
    .hero-field{position:absolute;inset:0;z-index:0;pointer-events:none}
    .mo .page-hero > .wrap > *{opacity:0;transform:translateY(18px);transition:opacity .7s ease, transform .9s cubic-bezier(.2,.7,.2,1)}
    .mo .page-hero > .wrap > :nth-child(2){transition-delay:.15s} .mo .page-hero > .wrap > :nth-child(3){transition-delay:.3s}
    .mo .page-hero.in > .wrap > *{opacity:1;transform:none}
    .mo .page-hero h1{font-weight:300;letter-spacing:.03em;filter:blur(5px);transition:font-weight 1.3s cubic-bezier(.2,.7,.2,1) .1s, letter-spacing 1.3s cubic-bezier(.2,.7,.2,1) .1s, filter .9s ease .1s}
    .mo .page-hero.in h1{font-weight:800;letter-spacing:-.01em;filter:none}
    .mo .rv{opacity:0;transform:translateY(26px);transition:opacity .7s ease var(--rd,0ms), transform .9s cubic-bezier(.2,.7,.2,1) var(--rd,0ms)}
    .mo .rv.in{opacity:1;transform:none}
    section:not(.final):not(.page-hero) > .wrap > .h2::after{content:"";display:block;width:56px;height:4px;border-radius:2px;background:var(--gold);margin-top:18px;transform-origin:0 50%;transition:transform .9s cubic-bezier(.2,.7,.2,1) .3s}
    .mo .h2.rv:not(.in)::after{transform:scaleX(0)}
    @media (hover:hover){
      .way,.mode,.chan,.art,.spec,.rule,.case,.phase,.lesson,.res-card,.feature{transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease, opacity .25s ease}
      .way:hover,.mode:hover,.chan:hover,.art:hover,.spec:hover,.rule:hover,.case:hover,.lesson:hover{transform:translateY(-4px);box-shadow:0 22px 44px -28px rgba(0,20,47,.55)}
    }
    @media (prefers-reduced-motion:reduce){ *{transition:none!important;animation:none!important} }