:root{
  --ink:#231817; --muted:#75615a; --paper:#fffdf8; --card:rgba(255,255,255,.86);
  --rose:#ff8aa0; --coral:#ef6f54; --amber:#ffcf70; --teal:#2f7d7f; --mint:#dff4ee;
  --violet:#7a5cff; --blue:#75b8ff; --line:rgba(92,61,48,.16); --shadow:0 22px 70px rgba(68,35,22,.16);
  --good:#197447; --bad:#ad2f2f; --good-bg:#e8f6ee; --bad-bg:#fdecec;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);min-height:100svh;background:
  radial-gradient(circle at 8% 10%, rgba(255,138,160,.34), transparent 26%),
  radial-gradient(circle at 92% 12%, rgba(117,184,255,.32), transparent 28%),
  radial-gradient(circle at 40% 0%, rgba(255,207,112,.42), transparent 24%),
  linear-gradient(135deg,#fff8ef 0%,#f9ede7 46%,#eaf7f5 100%);}
body:before{content:"";position:fixed;inset:0;pointer-events:none;background-image:radial-gradient(rgba(35,24,23,.05) 1px, transparent 1px);background-size:22px 22px;mask-image:linear-gradient(#000,transparent 85%)}
header{position:sticky;top:0;z-index:20;display:flex;justify-content:space-between;gap:12px;align-items:center;padding:12px 14px;background:rgba(255,248,240,.78);border-bottom:1px solid var(--line);backdrop-filter:blur(18px)}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-weight:950;letter-spacing:-.03em}.brand:before{content:"♪";display:grid;place-items:center;width:36px;height:36px;border-radius:15px;color:white;background:linear-gradient(135deg,var(--coral),var(--violet));box-shadow:0 10px 26px rgba(122,92,255,.22)}
nav{display:flex;gap:7px;flex-wrap:wrap;justify-content:flex-end}nav a{color:#4d403b;text-decoration:none;background:rgba(255,255,255,.72);border:1px solid var(--line);border-radius:999px;padding:8px 10px;font-size:.9rem;font-weight:800;box-shadow:0 6px 16px rgba(61,38,24,.06)}nav a:hover{transform:translateY(-1px);background:#fff}
main{max-width:1120px;margin:auto;padding:20px 14px 90px}.card{background:var(--card);border:1px solid var(--line);border-radius:28px;padding:20px;margin:14px 0;box-shadow:var(--shadow);backdrop-filter:blur(14px)}.soft-card{background:rgba(255,255,255,.58);border:1px solid var(--line);border-radius:24px;padding:16px;box-shadow:0 12px 32px rgba(61,38,24,.08)}
.grid{display:grid;gap:14px}@media(min-width:760px){.two{grid-template-columns:1.1fr .9fr}.three{grid-template-columns:repeat(3,1fr)}}
h1{font-size:clamp(2rem,7vw,4.6rem);line-height:.98;letter-spacing:-.07em;margin:8px 0 12px}h2{font-size:clamp(1.35rem,4vw,2rem);letter-spacing:-.035em;margin:10px 0}h3{letter-spacing:-.025em}.muted{color:var(--muted);line-height:1.55}.lead{font-size:1.12rem;color:var(--muted);line-height:1.62;max-width:70ch}.kicker{display:inline-flex;align-items:center;width:max-content;max-width:100%;border:1px solid var(--line);background:rgba(255,255,255,.78);color:var(--teal);border-radius:999px;padding:8px 12px;font-weight:950;font-size:.84rem}.hero{display:grid;gap:18px;align-items:center}.hero-visual{min-height:240px;border-radius:32px;overflow:hidden;background:linear-gradient(135deg,#fff1d5,#e8fbf7);border:1px solid var(--line);box-shadow:var(--shadow)}.hero-visual img{display:block;width:100%;height:100%;object-fit:cover}.home-cta{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}.button,button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:18px;padding:13px 16px;background:linear-gradient(135deg,var(--coral),#c64e82);color:#fff;text-decoration:none;font-weight:900;min-height:48px;cursor:pointer;box-shadow:0 12px 26px rgba(198,78,130,.22)}.button:hover,button:hover{transform:translateY(-1px)}.secondary{background:rgba(255,255,255,.82)!important;color:var(--ink)!important;border:1px solid var(--line)!important;box-shadow:0 8px 18px rgba(61,38,24,.08)!important}.ghost{background:transparent!important;color:var(--muted)!important;border:1px dashed var(--line)!important;box-shadow:none!important}.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.axis-card{position:relative;overflow:hidden;min-height:210px}.axis-card:after{content:"";position:absolute;right:-35px;bottom:-35px;width:150px;height:150px;border-radius:50%;background:radial-gradient(circle,rgba(255,207,112,.65),transparent 65%)}.axis-icon{display:grid;place-items:center;width:58px;height:58px;border-radius:20px;background:linear-gradient(135deg,#fff3d0,#f2e8ff);font-size:1.7rem;margin-bottom:8px}.axis-card h2{margin-top:0}.page-card{text-decoration:none;color:inherit;display:block;transition:.18s ease}.page-card:hover{transform:translateY(-2px)}
input,textarea,select{width:100%;border:1px solid var(--line);border-radius:16px;padding:12px;font:inherit;background:rgba(255,255,255,.9)}textarea{min-height:310px;font-family:ui-monospace,Consolas,monospace;font-size:.92rem}label{display:block;font-weight:900;margin:12px 0 6px}.pill{display:inline-flex;align-items:center;padding:5px 9px;border-radius:999px;background:#fff1dc;color:#9d4b1f;font-size:.78rem;font-weight:900;margin:3px;border:1px solid rgba(157,75,31,.12)}.meta-discreet{display:flex;gap:5px;flex-wrap:wrap;opacity:.72;font-size:.78rem}.page-tools{display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end}.page-tools .button,.page-tools a{font-size:.82rem;padding:8px 10px;min-height:36px;border-radius:999px}.top{display:flex;justify-content:space-between;gap:12px;align-items:flex-start;flex-wrap:wrap}.article-shell{display:grid;gap:14px}@media(min-width:920px){.article-shell{grid-template-columns:minmax(0,1fr) 220px}.article-side{position:sticky;top:86px;align-self:start}.hero{grid-template-columns:1fr .8fr}}
.md{font-size:1.03rem}.md p,.md li{line-height:1.72}.md p{max-width:72ch}.md h1{font-size:clamp(2rem,6vw,3.5rem)}.md h2{border-top:1px solid var(--line);padding-top:22px;margin-top:28px;color:#2a5557}.md h3{color:#8c3f2f;margin-top:24px}.md blockquote{margin:16px 0;padding:15px 16px;border-left:5px solid var(--teal);background:#f0fbf8;border-radius:16px;font-weight:750;color:#24494b}.md a{color:#a84634;font-weight:850;text-decoration-thickness:2px;text-underline-offset:3px}.md code{background:#fff1dc;border:1px solid rgba(157,75,31,.16);border-radius:8px;padding:1px 5px}.md-img,.thumb{max-width:100%;border-radius:22px;border:1px solid var(--line);box-shadow:0 14px 34px rgba(61,38,24,.12);background:#fff}.md-img{display:block;margin:18px 0}.side-note{font-size:.86rem;color:var(--muted);line-height:1.45}.side-note a{display:block;margin:6px 0;color:var(--muted);text-decoration:none}.side-note a:hover{color:var(--ink)}
table{width:100%;border-collapse:separate;border-spacing:0;background:rgba(255,255,255,.84);border:1px solid var(--line);border-radius:20px;overflow:hidden}td,th{padding:11px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}tr:last-child td{border-bottom:0}pre{white-space:pre-wrap;background:#fff7eb;padding:14px;border-radius:18px;border:1px solid var(--line);overflow:auto}.notice{padding:13px;border-radius:16px;background:#fff4db}.ok{background:var(--good-bg)}.bad{background:var(--bad-bg)}.discussion{padding:13px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.82);margin:10px 0}.discussion p{line-height:1.55}.screen{display:none}.screen.active{display:block}.hidden{display:none!important}
#quiz .answer,.answer{width:100%;text-align:left;margin:6px 0;background:rgba(255,255,255,.86);color:var(--ink);border:1px solid var(--line);box-shadow:none}.answer.selected{background:#edf7f7;border-color:#2f7d7f}.answer.correct{background:var(--good-bg)}.answer.wrong{background:var(--bad-bg)}.feedback{border-radius:20px;padding:15px;margin-top:14px}.feedback.good{background:var(--good-bg)}.feedback.bad{background:var(--bad-bg)}
.mobile-menu-title{display:none}@media(max-width:620px){header{align-items:flex-start}.brand{font-size:1rem}nav{gap:5px}nav a{font-size:.78rem;padding:7px 8px}main{padding-top:14px}.card{border-radius:24px;padding:17px}.home-cta .button{width:100%}.hero-visual{min-height:180px}.page-tools{width:100%;justify-content:flex-start}.article-shell{display:block}}