:root{--blue:#2453ff;--ink:#0d1b3e;--soft:#f3f6ff;--line:#e2e8f5;--txt:#3b4660;--ok:#13a36b}
*{box-sizing:border-box}body{margin:0;font-family:Manrope,system-ui,sans-serif;color:var(--txt);background:#fff;line-height:1.7}
a{color:var(--blue);text-decoration:none}img{display:block;max-width:100%}
.ss-nav{position:sticky;top:0;background:#fff;border-bottom:1px solid var(--line);z-index:5}
.ss-nav__in{max-width:1200px;margin:auto;padding:0 20px;height:66px;display:flex;align-items:center;gap:30px}
.ss-logo{font-weight:800;color:var(--ink);font-size:1.2rem;display:flex;gap:8px;align-items:center}
.ss-logo i{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--blue),#7a5cff);display:inline-block}
.ss-nav__links{display:flex;gap:22px;margin-left:auto;font-weight:600;font-size:.92rem}
.ss-nav__links a{color:var(--txt)}.ss-nav__links a:hover{color:var(--blue)}
.ss-hero{background:linear-gradient(180deg,var(--soft),#fff);padding:64px 20px 30px}
.ss-hero__in{max-width:1200px;margin:auto}
.ss-hero h1{color:var(--ink);font-size:clamp(2rem,4.5vw,3.3rem);line-height:1.1;letter-spacing:-.03em;margin:0 0 14px;max-width:780px}
.ss-hero p{max-width:620px;font-size:1.1rem;margin:0}
.ss-tabs{max-width:1200px;margin:26px auto 0;padding:0 20px;display:flex;gap:8px;flex-wrap:wrap}
.ss-tabs a{padding:8px 16px;border-radius:10px;background:#fff;border:1px solid var(--line);color:var(--ink);font-weight:600;font-size:.9rem}
.ss-tabs a.is-active{background:var(--ink);color:#fff;border-color:var(--ink)}
.ss-grid{max-width:1200px;margin:30px auto;padding:0 20px;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ss-card{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#fff;transition:box-shadow .2s,transform .2s;display:flex;flex-direction:column}
.ss-card:hover{box-shadow:0 14px 34px rgba(13,27,62,.1);transform:translateY(-2px)}
.ss-card img{aspect-ratio:16/10;object-fit:cover;width:100%}
.ss-card__b{padding:18px 20px 22px;display:flex;flex-direction:column;flex:1}
.ss-pill{display:inline-block;font-size:.72rem;font-weight:700;color:var(--blue);background:var(--soft);padding:3px 10px;border-radius:99px;align-self:flex-start}
.ss-card h3{color:var(--ink);font-size:1.12rem;line-height:1.35;margin:10px 0 8px}
.ss-card p{font-size:.92rem;margin:0 0 12px;flex:1;color:var(--txt)}
.ss-card small{color:#7c87a0}
.ss-pages{max-width:1200px;margin:10px auto 50px;padding:0 20px;display:flex;gap:6px;flex-wrap:wrap}
.ss-pages a,.ss-pages strong{min-width:40px;height:40px;display:grid;place-items:center;border-radius:10px;border:1px solid var(--line);font-weight:700}
.ss-pages strong{background:var(--blue);color:#fff;border-color:var(--blue)}
.ss-art{max-width:1200px;margin:0 auto;padding:40px 20px;display:grid;grid-template-columns:260px minmax(0,720px);gap:56px;justify-content:center}
.ss-toc{position:sticky;top:90px;align-self:start;font-size:.9rem}
.ss-toc b{display:block;color:var(--ink);margin-bottom:8px}
.ss-toc a{display:block;color:var(--txt);padding:6px 0 6px 12px;border-left:2px solid var(--line)}
.ss-toc a:hover{border-color:var(--blue);color:var(--blue)}
.ss-art h1{color:var(--ink);font-size:clamp(1.9rem,4vw,2.7rem);line-height:1.15;letter-spacing:-.025em;margin:12px 0}
.ss-by{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:.88rem;color:#7c87a0;margin-bottom:22px}
.ss-by .ok{color:var(--ok);font-weight:700}
.ss-lead{border-radius:16px;margin-bottom:24px;width:100%;aspect-ratio:16/9;object-fit:cover}
.ss-key{background:var(--soft);border-radius:14px;padding:18px 22px;margin:0 0 26px}
.ss-key b{color:var(--ink)}.ss-key ul{margin:8px 0 0;padding-left:20px}
.ss-text h2{color:var(--ink);font-size:1.45rem;letter-spacing:-.015em;margin:2em 0 .4em;scroll-margin-top:90px}
.ss-text figure{margin:28px 0}.ss-text figure img{border-radius:12px}
.ss-disc{border:1px solid var(--line);border-left:4px solid #f5a524;border-radius:10px;padding:14px 18px;font-size:.88rem;margin-top:34px;background:#fffbf2}
.ss-page{max-width:760px;margin:0 auto;padding:50px 20px}
.ss-page h1{color:var(--ink);font-size:2.4rem;letter-spacing:-.03em}
.ss-page h2{color:var(--ink);font-size:1.25rem;margin-top:1.8em}
.ss-page input,.ss-page textarea,.ss-page select{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font:inherit;margin:4px 0 16px}
.ss-page button{background:var(--blue);color:#fff;border:0;border-radius:10px;padding:12px 26px;font:700 1rem Manrope,sans-serif;cursor:pointer}
.ss-foot{background:var(--ink);color:#aab4cc;padding:46px 20px 30px;font-size:.9rem}
.ss-foot__in{max-width:1200px;margin:auto;display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}
.ss-foot a{color:#dfe5f5;display:block;margin:4px 0}
.ss-foot p.c{grid-column:1/-1;border-top:1px solid #23325a;padding-top:18px;margin:10px 0 0;font-size:.8rem}
@media(max-width:960px){.ss-grid{grid-template-columns:1fr 1fr}.ss-art{grid-template-columns:1fr}.ss-toc{display:none}}
@media(max-width:620px){.ss-grid{grid-template-columns:1fr}.ss-nav__links a.hm{display:none}.ss-foot__in{grid-template-columns:1fr}}