:root{--bg:#07101b;--bg2:#0b1624;--card:#0d1b2acc;--line:#23374b;--text:#eef6fb;--muted:#9db0c2;--accent:#3bedd3;--accent2:#64a8ff;--warn:#ffcf70;--radius:24px;--shadow:0 22px 70px rgba(0,0,0,.34)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 90% 2%,rgba(35,194,180,.13),transparent 30%),radial-gradient(circle at 2% 35%,rgba(121,76,255,.12),transparent 28%),var(--bg);color:var(--text);font-family:Inter,"Noto Sans KR","Noto Sans JP",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.68;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.wrap{width:min(1160px,calc(100% - 40px));margin:auto}.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:16px;z-index:99;background:white;color:black;padding:10px 14px;border-radius:10px}.site-header{position:sticky;top:0;z-index:30;background:rgba(7,16,27,.82);backdrop-filter:blur(18px);border-bottom:1px solid rgba(255,255,255,.06)}.header-row{height:74px;display:flex;align-items:center;gap:24px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.02em;white-space:nowrap}.brand-mark{width:34px;height:34px;border:1px solid rgba(59,237,211,.55);border-radius:11px;display:grid;place-items:center;background:linear-gradient(145deg,rgba(59,237,211,.14),rgba(100,168,255,.05))}.brand-mark:before{content:"";width:15px;height:15px;border:3px solid var(--accent);border-radius:50%}.brand-mark i{display:none}.desktop-nav{display:flex;gap:20px;margin-left:auto}.desktop-nav a{font-size:14px;color:#b9c8d5}.desktop-nav a:hover,.desktop-nav a[aria-current="page"]{color:white}.header-actions{display:flex;gap:12px;align-items:center}.lang-switch{display:flex;padding:4px;border:1px solid rgba(255,255,255,.08);border-radius:999px;background:rgba(255,255,255,.03)}.lang-switch a{font-size:11px;padding:5px 8px;color:#8fa2b4;border-radius:999px}.lang-switch 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rgba(59,237,211,.26);background:rgba(59,237,211,.08);color:#bafff2}.status.muted{color:#b6c5d2;border-color:rgba(255,255,255,.1);background:rgba(255,255,255,.03)}h1{font-size:clamp(42px,5.7vw,76px);line-height:1.08;letter-spacing:-.055em;margin:0 0 20px;max-width:820px}.lead{font-size:19px;color:#b7c7d5;margin:0 0 24px;max-width:740px}.quick-answer{border-left:3px solid var(--accent);padding:12px 18px;margin:26px 0;background:linear-gradient(90deg,rgba(59,237,211,.08),transparent);border-radius:0 14px 14px 0}.quick-answer span{font-size:11px;text-transform:uppercase;letter-spacing:.14em;color:var(--accent);font-weight:800}.quick-answer p{margin:4px 0 0;color:#e7f3f8}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 18px;border-radius:13px;font-weight:800;font-size:14px;border:1px solid transparent;transition:.2s}.button.primary{background:linear-gradient(135deg,var(--accent),#69d4ff);color:#041215;box-shadow:0 10px 32px rgba(59,237,211,.15)}.button.primary:hover{transform:translateY(-1px);filter:brightness(1.05)}.button.ghost{border-color:var(--line);color:#d5e1ea;background:rgba(255,255,255,.02)}.micro{font-size:12px;color:#8195a7;margin:13px 0 0}.feature-image{margin:0;position:relative}.feature-image img{border-radius:34px;box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.08);aspect-ratio:1/1;object-fit:cover}.feature-image figcaption{position:absolute;bottom:16px;left:16px;background:rgba(4,9,16,.76);backdrop-filter:blur(9px);padding:7px 10px;border-radius:9px;color:#b9cad6;font-size:11px}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:42px;align-items:start;padding-bottom:80px}.article{min-width:0}.content-section,.faq-section,.related{padding:34px 0;border-top:1px solid rgba(255,255,255,.08)}.content-section h2,.faq-section 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rgba(255,207,112,.18);color:#e8d9b8;font-size:13px}.inline-cta{display:flex;align-items:center;gap:12px;margin-top:22px}.inline-cta span{font-size:11px;color:#72879a}.calculator{margin-top:20px;padding:22px;border:1px solid rgba(59,237,211,.2);border-radius:18px;background:linear-gradient(145deg,rgba(59,237,211,.07),rgba(100,168,255,.03))}.calculator label{display:grid;gap:8px;font-weight:800}.calculator input{width:100%;background:#07111c;border:1px solid #2b4257;color:white;font-size:18px;padding:13px 14px;border-radius:12px;outline:none}.calculator input:focus{border-color:var(--accent)}.preset-row{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}.preset-row button{background:#102336;color:#d7e7ef;border:1px solid #29445a;border-radius:10px;padding:8px 12px;cursor:pointer}.calc-output{display:grid;gap:3px;padding-top:11px;border-top:1px solid rgba(255,255,255,.08)}.calc-output span,.calc-output small{color:#8da2b4}.calc-output 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1fr;gap:14px;align-items:center;padding:10px;border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.025);border-radius:16px}.guide-card img{width:104px;height:104px;object-fit:cover;border-radius:12px}.guide-card h3{font-size:15px;margin:0 0 5px}.guide-card p{font-size:12px;color:#869aab;margin:0;line-height:1.5}.toc{position:sticky;top:98px}.toc-card{border:1px solid rgba(255,255,255,.08);border-radius:17px;background:rgba(11,22,36,.72);backdrop-filter:blur(14px);padding:16px;display:grid;gap:7px}.toc-card strong{font-size:12px;color:#dbe7ef;margin-bottom:3px}.toc-card a{font-size:12px;color:#8498a9;padding:5px 0}.toc-card a:hover{color:#d9fff8}.site-footer{border-top:1px solid rgba(255,255,255,.08);padding:42px 0 24px;background:#050c14}.footer-top{display:grid;grid-template-columns:1.3fr .7fr;gap:40px}.footer-brand{margin-bottom:12px}.footer-top p{color:#7f93a5;max-width:620px;font-size:13px}.footer-links{display:grid;grid-template-columns:repeat(2,1fr);gap:9px;align-content:start}.footer-links a{color:#9eb0be;font-size:13px}.footer-bottom{margin-top:32px;padding-top:18px;border-top:1px solid rgba(255,255,255,.06);display:flex;justify-content:space-between;color:#607588;font-size:11px}.mobile-cta{display:none}
@media(max-width:980px){.desktop-nav{display:none}.menu-btn{display:inline-block}.hero-grid{grid-template-columns:1fr;gap:32px}.feature-image{max-width:620px}.article-layout{grid-template-columns:1fr}.toc{display:none}.footer-top{grid-template-columns:1fr}.guide-grid{grid-template-columns:1fr}}
@media(max-width:640px){.wrap{width:min(100% - 28px,1160px)}.header-row{height:66px}.brand span:last-child{font-size:14px}.lang-switch{display:none}.hero{padding:36px 0 28px}h1{font-size:40px}.lead{font-size:16px}.feature-image img{border-radius:22px}.content-section,.faq-section,.related{padding:28px 0}.content-section h2,.faq-section h2,.related h2{font-size:25px}.guide-card{grid-template-columns:82px 1fr}.guide-card img{width:82px;height:82px}.source-card{display:grid}.source-card>a{justify-self:start}.inline-cta{align-items:flex-start;flex-direction:column}.mobile-cta{display:block;position:fixed;left:12px;right:12px;bottom:calc(10px + env(safe-area-inset-bottom));z-index:40}.mobile-cta a{display:block;text-align:center;background:linear-gradient(135deg,var(--accent),#69d4ff);color:#041215;font-weight:900;padding:13px 16px;border-radius:15px;box-shadow:0 14px 40px rgba(0,0,0,.42)}body{padding-bottom:72px}.footer-bottom{flex-direction:column;gap:4px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

/* 2026-09-16 responsive image & language UI audit */
.feature-image{width:100%;min-width:0}
.feature-image img{width:100%;height:auto;max-height:none;aspect-ratio:auto;object-fit:contain;object-position:center;display:block}
.feature-image figcaption{position:static;margin-top:8px;background:transparent;backdrop-filter:none;padding:0 2px;color:#8fa3b4;line-height:1.5}
.guide-card{overflow:hidden}
.guide-card img{object-fit:contain;object-position:center;background:#0b1724}
.lang-switch a,.mobile-lang-switch a{white-space:nowrap}
@media(max-width:980px){.feature-image{max-width:620px;width:100%;margin-inline:auto}}
@media(max-width:640px){.feature-image{max-width:none}.feature-image img{width:100%;height:auto;border-radius:20px}.feature-image figcaption{font-size:10px}.guide-card img{object-fit:contain}}