:root{--c-dark: #0A1F14;--c-forest: #2D6A4F;--c-sage: #9FC7AF;--c-gold: #C9A961;--c-gold-deep: #A88A4A;--c-gold-soft: #E3CB8C;--c-alert: #8B2635;--c-bg: #FAFAF7;--c-surface: #FFFFFF;--c-border: #E6E2D6;--c-text: #1a2332;--c-body: #3a4558;--c-muted: #5f6b7a;--gds-font: "Pretendard Variable", "Pretendard", "Segoe UI", "Malgun Gothic", sans-serif}.gds-callout,.gds-section-badge,.gds-part-divider,.gds-def-box,.gds-table-wrap,.gds-guide-card,.gds-feature-card{font-family:var(--gds-font);box-sizing:border-box}.gds-callout *,.gds-guide-card *,.gds-feature-card *,.gds-def-box *,.gds-table-wrap *{box-sizing:border-box}.gds-section-badge{display:inline-block;background:var(--c-gold);color:var(--c-dark);font-size:.74rem;font-weight:700;padding:4px 12px;border-radius:12px;letter-spacing:.5px}.gds-def-box{background:linear-gradient(135deg,#fbf7e9,#f5efd8);border-radius:12px;padding:24px;margin:18px 0;border:1px solid var(--c-gold-soft)}.gds-def-box .gds-big-def{font-size:1.08rem;font-weight:700;color:var(--c-dark);line-height:1.6;margin:0}.gds-callout{background:linear-gradient(135deg,#fbf7e9,#f5efd8);border-left:4px solid var(--c-gold);padding:18px 22px;border-radius:0 12px 12px 0;margin:20px 0;font-size:.93rem;color:var(--c-body);line-height:1.75}.gds-callout strong{color:var(--c-gold-deep)}.gds-callout--forest{background:linear-gradient(135deg,#eef4f0,#e3efe8);border-left-color:var(--c-forest)}.gds-callout--forest strong{color:var(--c-forest)}.gds-callout--gray{background:#f3f1ea;border-left-color:#bdb89f}.gds-callout--gray strong{color:var(--c-muted)}.gds-part-divider{max-width:920px;margin:40px 0 8px}.gds-part-tag{display:inline-block;background:var(--c-dark);color:#fff;font-size:.95rem;font-weight:700;padding:8px 22px;border-radius:24px;letter-spacing:.5px}.gds-part-tag span{color:var(--c-gold)}.gds-part-desc{color:var(--c-muted);font-size:.92rem;margin:8px 0 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#0a1f141f;border-color:var(--c-gold);transform:translateY(-2px)}.gds-guide-head{background:linear-gradient(135deg,#1b3520,#2d6a4f);color:#fff;padding:22px 26px;border-bottom:4px solid var(--c-gold)}.gds-guide-name{display:inline-block;background:var(--c-gold);color:var(--c-dark);font-weight:800;padding:6px 18px;border-radius:8px;font-size:1.05rem;margin-bottom:12px;letter-spacing:-.2px}.gds-guide-line{margin:0;color:#fff;font-size:1.02rem;line-height:1.65;font-weight:500;opacity:.96}.gds-guide-body{padding:22px 26px 26px;display:flex;flex-direction:column;gap:20px;flex:1}.gds-guide-block{padding-bottom:18px;border-bottom:1px solid #f0eee6}.gds-guide-block:last-child{padding-bottom:0;border-bottom:none}.gds-guide-block h5{color:var(--c-gold-deep);font-size:.82rem;font-weight:800;letter-spacing:.8px;margin:0 0 12px;text-transform:uppercase}.gds-guide-block-body{margin:0;font-size:.98rem;line-height:1.78;color:var(--c-body)}.gds-guide-block-body strong{color:var(--c-text);font-weight:700}.gds-feature-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:12px;padding:20px;transition:all .3s;position:relative;overflow:hidden;max-width:300px}.gds-feature-card:before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:var(--c-gold)}.gds-feature-card:hover{transform:translateY(-3px);box-shadow:0 8px 24px #0a1f141a;border-color:var(--c-gold-soft)}.gds-fc-num{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:50%;background:var(--c-gold);color:var(--c-dark);font-weight:700;font-size:.82rem;margin-bottom:10px}.gds-feature-card h4{color:var(--c-text);font-size:.95rem;font-weight:700;margin:0 0 6px}.gds-feature-card p{color:var(--c-muted);font-size:.85rem;line-height:1.55;margin:0}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--c-bg);color:var(--c-body);font-family:var(--gds-font);line-height:1.75;-webkit-font-smoothing:antialiased}.app-hero{background:linear-gradient(135deg,#0a1f14,#1b3520 45%,#2d6a4f 78%,#0a1f14);color:#fff;padding:38px 24px 34px;text-align:center;position:relative;overflow:hidden}.app-hero:before{content:"";position:absolute;top:-50%;right:-50%;bottom:-50%;left:-50%;background:radial-gradient(ellipse at 30% 40%,rgba(201,169,97,.16) 0%,transparent 60%);pointer-events:none}.app-hero .eyebrow{display:inline-block;border:1px solid rgba(201,169,97,.5);color:var(--c-gold-soft);font-size:.8rem;font-weight:700;letter-spacing:2px;padding:6px 16px;border-radius:20px;margin-bottom:22px}.app-hero h1{font-size:2.1rem;font-weight:800;margin:0;letter-spacing:-.5px;line-height:1.25}.app-hero h1 span{color:var(--c-gold)}.app-hero p{font-size:1.16rem;font-weight:300;opacity:.9;max-width:620px;margin:0 auto}.ds-toc{position:sticky;top:0;z-index:50;background:#fafaf7f7;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--c-border)}.ds-toc-inner{max-width:1000px;margin:0 auto;padding:10px 24px;display:flex;flex-direction:column;gap:7px}.ds-row{display:flex;align-items:center;gap:12px}.ds-label{flex:0 0 162px;color:var(--c-forest);font-weight:700;font-size:.95rem;letter-spacing:.1px;white-space:nowrap}.ds-chips{display:flex;flex-wrap:wrap;gap:2px}.ds-chips button{background:none;border:none;cursor:pointer;font-family:inherit;color:var(--c-text);padding:4px 7px;border-radius:6px;font-size:.92rem;font-weight:500;line-height:1.2;transition:color .2s}.ds-chips button .n{color:var(--c-muted);font-weight:700;font-size:.82rem;margin-right:5px;letter-spacing:.2px}.ds-chips button:hover,.ds-chips button:hover .n{color:var(--c-gold-deep)}.ds-chips button:focus-visible{outline:2px solid var(--c-gold-deep);outline-offset:2px}.ds-chips button.on{color:var(--c-gold-deep);font-weight:700;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px}.ds-chips button.on .n{color:var(--c-gold-deep)}@media (max-width: 760px){.ds-toc{position:static}.ds-row{flex-wrap:wrap}.ds-label{flex:0 0 100%;text-align:center;margin-bottom:2px}.ds-chips{flex:0 0 100%;justify-content:center}}.app-wrap{max-width:980px;margin:0 auto;padding:0 24px 80px}.app-section{background:var(--c-surface);border:1px solid var(--c-border);border-radius:16px;padding:40px 38px;margin:22px 0 8px;box-shadow:0 1px 3px #0a1f140d,0 8px 24px #0a1f140a}@media (max-width: 760px){.app-section{padding:26px 18px;border-radius:12px}}.app-section>h2{color:var(--c-text);font-size:1.9rem;font-weight:800;letter-spacing:-.5px;margin:14px 0 6px}.app-section>.lead{color:var(--c-muted);font-size:1.04rem;margin:0 0 24px;max-width:760px}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin:24px 0 8px;align-items:start}.grid-feats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin:22px 0 8px}@media (max-width: 760px){.app-hero h1{font-size:2rem}.grid-2{grid-template-columns:1fr}}.flow{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin:20px 0 8px}.flow-step{background:var(--c-forest);color:#fff;padding:9px 14px;border-radius:8px;font-size:.82rem;font-weight:600;text-align:center}.flow-step small{display:block;font-weight:400;opacity:.62;font-size:.68rem;margin-top:2px}.flow-step.hl{background:#fff8e7;color:var(--c-dark);border:1px solid var(--c-gold)}.flow-arrow{color:var(--c-gold-deep);font-weight:700}.formula{background:#0a1f14;color:#e3cb8c;padding:14px 18px;border-radius:8px;font-size:.84rem;line-height:1.7;overflow-x:auto;margin:10px 0;font-family:JetBrains Mono,Consolas,monospace;white-space:pre-wrap}.note{color:var(--c-muted);font-size:.9rem;margin:10px 0}.adv{margin:14px 0;border:1px solid var(--c-border);border-radius:10px;background:#fff;overflow:hidden}.adv>summary{cursor:pointer;list-style:none;padding:12px 16px;font-weight:700;font-size:.92rem;color:var(--c-forest);background:#f6f3e9}.adv>summary::-webkit-details-marker{display:none}.adv>summary:before{content:"▸";margin-right:8px;color:var(--c-gold-deep)}.adv[open]>summary:before{content:"▾"}.adv-body{padding:14px 18px;font-size:.94rem;line-height:1.75;color:var(--c-body)}.adv-body p{margin:0 0 10px}.adv-body ul{margin:6px 0;padding-left:18px}.gloss h3{color:var(--c-forest);font-size:1.06rem;font-weight:700;margin:26px 0 10px;padding-bottom:6px;border-bottom:1px solid var(--c-gold-soft)}.gloss dl{display:grid;gap:10px;margin:0}.gloss dt{color:var(--c-text);font-weight:700;font-size:.95rem;margin-top:6px}.gloss dd{color:var(--c-body);font-size:.9rem;margin:0;padding-left:14px;line-height:1.7}.column{border:1.5px solid var(--c-gold);border-radius:16px;padding:22px 26px;margin:20px 0;background:#fcfaf3}.column .col-tag{display:inline-block;margin-bottom:10px;padding:3px 12px;border-radius:20px;font-size:.74rem;font-weight:700;background:#ece6f5;color:#6b4fa0}.column h3{color:var(--c-text);font-size:1.28rem;font-weight:800;margin:0 0 4px;border:none}.column .col-sub{color:var(--c-muted);font-size:.95rem;margin:0 0 14px}.column .col-body{line-height:1.85;color:var(--c-body);font-size:.96rem}.column .col-body p{margin:0 0 12px}.column .col-src{margin-top:14px;font-size:.84rem;color:var(--c-muted);border-top:1px solid var(--c-border);padding-top:12px}.src-link{color:var(--c-gold-deep);text-decoration:none;font-weight:600}.src-link:hover{text-decoration:underline}.fig{width:100%;height:auto;border-radius:10px;border:1px solid var(--c-border);margin:6px 0;display:block}.app-footer{text-align:center;padding:48px 24px 64px;color:var(--c-muted);font-size:.88rem;border-top:1px solid var(--c-border)}.app-footer strong{color:var(--c-forest)}