:root{
  --bg:#09080d;--panel:#121019;--panel2:#181421;--text:#f6f3f8;--muted:#a79dac;
  --line:rgba(228,216,239,.13);--line2:rgba(236,207,142,.28);--gold:#e6c276;
  --gold2:#f3dda7;--violet:#a58bd6;--max:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--text);font-family:Inter,Pretendard,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65;background:linear-gradient(180deg,#0b0910,#08070b 62%,#0a080d)}
a{color:inherit;text-decoration:none}
.wrap{width:min(var(--max),calc(100% - 40px));margin:auto}
.top{position:sticky;top:0;z-index:30;border-bottom:1px solid var(--line);background:rgba(7,7,11,.96);backdrop-filter:blur(12px)}
.topin{display:flex;align-items:center;justify-content:space-between;gap:28px;min-height:58px}
.brand{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:950;letter-spacing:.04em;white-space:nowrap}
.brand:before{content:"◈";display:grid;place-items:center;width:28px;height:28px;border:1px solid rgba(230,194,118,.5);border-radius:8px;color:var(--gold)}
.brand b{padding-left:8px;border-left:1px solid var(--line);font-size:11px;color:var(--gold2);letter-spacing:.1em}
nav{display:flex;gap:4px;overflow:auto;scrollbar-width:none}
nav::-webkit-scrollbar{display:none}
nav a{padding:8px 10px;border-radius:8px;color:#aaa2b2;font-size:12px;font-weight:750;white-space:nowrap}
nav a:hover{color:#fff;background:rgba(255,255,255,.05)}
.sol-main-hero{height:220px;border-bottom:1px solid rgba(230,194,118,.18);background:#100c18 center center/cover no-repeat}
.home-main{padding:27px 0 76px}
.home-title{display:flex;align-items:end;justify-content:space-between;gap:28px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.home-title h1{margin:0;font-size:31px;line-height:1.15;letter-spacing:-.045em}
.home-title p{max-width:600px;margin:0;color:var(--muted);font-size:13px}
.updated{display:inline-flex;margin-top:10px;color:#8e8494;font-size:10px}
.section{padding-top:31px}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:13px}
.section-head h2{margin:0;font-size:21px;letter-spacing:-.03em}
.section-head p{margin:0;color:#827a88;font-size:11px}
.hot-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.hot-card{position:relative;min-height:154px;padding:18px;border:1px solid var(--line);border-radius:14px;background:linear-gradient(150deg,#191522,#100d15);transition:.18s ease}
.hot-card:hover{transform:translateY(-2px);border-color:var(--line2)}
.hot-card .rank{color:var(--gold);font-size:10px;font-weight:900;letter-spacing:.11em}
.hot-card b{display:block;margin:8px 0 6px;font-size:17px;line-height:1.35;letter-spacing:-.025em}
.hot-card p{margin:0;color:#9a919f;font-size:12px;line-height:1.55}
.hot-card i{position:absolute;right:15px;bottom:12px;color:var(--violet);font-style:normal;font-size:13px}
.problem-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.problem-card{display:grid;grid-template-columns:96px 1fr auto;align-items:center;gap:14px;padding:15px 17px;border:1px solid var(--line);border-radius:13px;background:#110e16}
.problem-card strong{color:var(--gold2);font-size:12px}
.problem-card b{font-size:14px}
.problem-card span{color:#8f8695;font-size:11px}
.problem-card i{color:var(--violet);font-style:normal}
.guide-list{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.guide-list a{padding:16px;border:1px solid var(--line);border-radius:13px;background:#100d15}
.guide-list b{display:block;font-size:15px}
.guide-list span{display:block;margin-top:4px;color:#8e8593;font-size:11px}
.home-note{margin-top:30px;padding:16px 18px;border:1px solid rgba(230,194,118,.15);border-radius:13px;background:rgba(230,194,118,.045);color:#a89eaa;font-size:12px}
.page-main{padding-bottom:72px}
.breadcrumb{display:flex;gap:7px;padding-top:18px;color:#7f7685;font-size:11px}
.breadcrumb a:hover{color:#ddd}
.page-hero{padding:31px 0 25px;border-bottom:1px solid var(--line)}
.kicker{color:var(--gold);font-size:10px;font-weight:900;letter-spacing:.12em}
.page-hero h1{max-width:880px;margin:7px 0 9px;font-size:clamp(28px,4vw,38px);line-height:1.16;letter-spacing:-.045em}
.page-hero p{max-width:800px;margin:0;color:#aaa0ae;font-size:14px}
.page-meta{display:flex;gap:7px;flex-wrap:wrap;margin-top:12px}
.page-meta span{padding:4px 7px;border:1px solid var(--line);border-radius:999px;color:#837987;font-size:9px}
.content-layout{display:grid;grid-template-columns:minmax(0,820px) 230px;gap:52px;align-items:start}
.article{padding-top:26px}
.article>p:first-child{margin-top:0;font-size:15px;color:#d7d0da}
.article h2{margin:34px 0 10px;font-size:22px;line-height:1.25;letter-spacing:-.035em}
.article h3{margin:24px 0 7px;font-size:17px}
.article p,.article li{color:#bbb2bf;font-size:14px}
.article ul,.article ol{padding-left:21px}
.article li+li{margin-top:6px}
.answer-box{padding:17px 18px;border:1px solid rgba(230,194,118,.22);border-radius:13px;background:linear-gradient(135deg,rgba(230,194,118,.08),rgba(165,139,214,.05))}
.answer-box b{display:block;margin-bottom:5px;color:var(--gold2);font-size:15px}
.answer-box p{margin:0;color:#d2c9d4}
.check-grid,.facts{display:grid;grid-template-columns:repeat(2,1fr);gap:9px;margin:17px 0}
.check,.fact{padding:14px;border:1px solid var(--line);border-radius:12px;background:#100d15}
.check b,.fact b{display:block;margin-bottom:3px;font-size:13px}
.check span,.fact span{color:#908695;font-size:11px}
.compare{width:100%;border-collapse:collapse;margin:16px 0 23px;font-size:13px}
.compare th,.compare td{padding:11px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.compare th{color:var(--gold2);font-size:11px;background:rgba(255,255,255,.025)}
.compare td{color:#b9b0bd}
.callout{margin:20px 0;padding:14px 16px;border-left:2px solid var(--gold);border-radius:0 11px 11px 0;background:rgba(230,194,118,.055);color:#c9bfcc;font-size:13px}
.related{margin-top:40px;padding-top:20px;border-top:1px solid var(--line)}
.related h2{margin:0 0 11px;font-size:17px}
.related a{display:inline-block;margin:0 6px 7px 0;padding:7px 10px;border:1px solid var(--line);border-radius:8px;background:#110e16;color:#aaa0af;font-size:11px}
.side-nav{position:sticky;top:78px;margin-top:27px;padding:15px;border:1px solid var(--line);border-radius:13px;background:#100d15}
.side-nav b{display:block;margin-bottom:8px;color:var(--gold2);font-size:12px}
.side-nav a{display:block;padding:8px 0;border-top:1px solid rgba(255,255,255,.06);color:#9f96a4;font-size:11px}
.class-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:18px 0}
.class-card{padding:17px;border:1px solid var(--line);border-radius:13px;background:#110e17}
.class-card small{color:var(--gold);font-size:9px;font-weight:900;letter-spacing:.1em}
.class-card b{display:block;margin:5px 0;font-size:18px}
.class-card p{margin:0;color:#978d9c;font-size:12px}
.faq details{border-top:1px solid var(--line);padding:13px 0}
.faq summary{cursor:pointer;font-weight:750;font-size:13px}
.faq p{margin:8px 0 0}
.footer{border-top:1px solid var(--line);padding:26px 0 38px;color:#716975;font-size:10px}
@media(max-width:900px){
 .hot-grid{grid-template-columns:repeat(2,1fr)}
 .content-layout{grid-template-columns:1fr}.side-nav{display:none}
 .home-title{align-items:flex-start;flex-direction:column}
}
@media(max-width:650px){
 .wrap{width:calc(100% - 24px)}
 .topin{min-height:56px;align-items:flex-start;flex-direction:column;gap:5px;padding:9px 0}
 nav{width:100%;padding-bottom:1px}
 .brand{font-size:14px}.brand:before{width:25px;height:25px}
 .sol-main-hero{height:155px;background-position:center center}
 .home-main{padding-top:20px}.home-title h1{font-size:27px}
 .hot-grid,.problem-grid,.guide-list,.check-grid,.facts,.class-grid{grid-template-columns:1fr}
 .problem-card{grid-template-columns:82px 1fr auto}
 .page-hero{padding:25px 0 21px}.page-hero h1{font-size:29px}
 .article{padding-top:21px}.article h2{font-size:20px;margin-top:29px}
 .compare{font-size:11px}.compare th,.compare td{padding:9px 7px}
}