*{box-sizing:border-box;margin:0;padding:0}
:root{--navy:#071d33;--navy2:#173b5b;--ink:#182a3d;--muted:#64788c;--line:#cbd5df;--silver:#e8edf2;--soft:#f5f7f9;--paper:#fff;--accent:#315f89;--accent-soft:#dbe6ef;--shadow:0 28px 72px -54px rgba(7,29,51,.82)}
html{scroll-behavior:smooth}
body{min-height:100vh;background:radial-gradient(circle at 12% 0,#fff 0,#f4f7f9 36%,#e6edf3 100%);color:var(--ink);font-family:"Pretendard","Lexend",-apple-system,BlinkMacSystemFont,sans-serif;line-height:1.65}
a{color:inherit;text-decoration:none}
.ref-topbar{position:sticky;top:0;z-index:30;border-bottom:1px solid rgba(181,194,206,.78);background:rgba(255,255,255,.92);backdrop-filter:blur(18px)}
.ref-topbar-inner{width:min(1500px,calc(100% - 48px));min-height:70px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:20px}
.ref-brand{display:flex;align-items:center;gap:12px;color:var(--navy);font-weight:900}.ref-brand img{width:42px;height:42px;border:1px solid #bcc8d3;border-radius:12px;background:#fff}.ref-brand small{display:block;color:#728499;font:800 9px/1.2 "Lexend",sans-serif;letter-spacing:2px;text-transform:uppercase}
.ref-actions{display:flex;gap:8px}.ref-action{display:inline-flex;min-height:38px;align-items:center;justify-content:center;padding:8px 14px;border:1px solid #b8c5d0;border-radius:999px;background:#fff;color:var(--navy);font-size:11px;font-weight:850}.ref-action.primary{border-color:var(--navy);background:var(--navy);color:#fff}
.topic-strip{width:min(1500px,calc(100% - 48px));margin:18px auto 0;display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:7px}
.topic-link{display:flex;min-width:0;align-items:center;gap:9px;padding:10px 11px;border:1px solid #c8d2dc;border-radius:14px;background:rgba(255,255,255,.72);color:#587086;transition:.18s ease}.topic-link:hover,.topic-link.on{transform:translateY(-2px);border-color:#7890a7;background:#fff;color:var(--navy);box-shadow:0 18px 36px -30px rgba(7,29,51,.8)}
.topic-link.topic-photo{position:relative;isolation:isolate;min-height:74px;overflow:hidden;border-color:rgba(255,255,255,.78);background-image:var(--topic-photo);background-position:center;background-size:cover;color:#fff;box-shadow:inset 0 0 0 1px rgba(255,255,255,.24),0 16px 28px -24px rgba(7,29,51,.9)}.topic-link.topic-photo::after{content:"";position:absolute;z-index:-1;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.02),transparent 58%,rgba(3,15,28,.12));pointer-events:none}.topic-link.topic-photo:hover,.topic-link.topic-photo.on{border-color:#fff;background-image:var(--topic-photo);color:#fff;box-shadow:0 20px 34px -24px rgba(7,29,51,.95),0 0 0 2px var(--navy)}
.topic-icon{position:relative;z-index:1;display:grid;place-items:center;flex:0 0 40px;width:40px;height:40px;overflow:hidden;border:1px solid rgba(255,255,255,.62);border-radius:11px;background:rgba(4,18,32,.72);color:#fff;font:900 11px/1 "Lexend",sans-serif;box-shadow:inset 0 0 0 1px rgba(255,255,255,.12);backdrop-filter:blur(7px)}.topic-icon span{padding:4px 5px;text-shadow:0 1px 4px rgba(0,0,0,.7)}.topic-link.on .topic-icon{border-color:#fff;box-shadow:0 0 0 2px rgba(255,255,255,.25),inset 0 0 0 1px rgba(255,255,255,.22)}.topic-link b{position:relative;z-index:1;overflow:hidden;padding:6px 7px;border:1px solid rgba(255,255,255,.18);border-radius:8px;background:rgba(4,18,32,.56);color:inherit;font-size:11px;white-space:nowrap;text-overflow:ellipsis;text-shadow:0 2px 7px rgba(0,0,0,.78);backdrop-filter:blur(5px)}
.ref-shell{width:min(1500px,calc(100% - 48px));margin:14px auto 80px}
.ref-hero{position:relative;overflow:hidden;display:grid;grid-template-columns:minmax(0,1fr) 390px;gap:26px;min-height:410px;padding:44px;border:1px solid #bfcbd6;border-radius:30px;background:rgba(255,255,255,.93);box-shadow:var(--shadow)}
.ref-hero::after{content:attr(data-mark);position:absolute;right:-18px;bottom:-80px;color:rgba(7,29,51,.045);font:900 260px/1 "Lexend",sans-serif;pointer-events:none}.hero-copy,.hero-board{position:relative;z-index:1}.hero-kicker{display:flex;align-items:center;gap:10px;color:var(--accent);font:800 10px/1 "Lexend",sans-serif;letter-spacing:2px;text-transform:uppercase}.hero-kicker::before{content:"";width:38px;height:2px;background:linear-gradient(90deg,#8da0b2,var(--navy))}.hero-title{max-width:850px;margin-top:24px;color:var(--navy);font-size:clamp(44px,6vw,78px);font-weight:950;line-height:1.02;letter-spacing:-4px;word-break:keep-all}.hero-lead{max-width:850px;margin-top:20px;color:#52677b;font-size:17px;line-height:1.8;word-break:keep-all}.hero-stats{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}.hero-stat{padding:8px 11px;border:1px solid #c1ccd6;border-radius:999px;background:#f8fafb;color:#35516c;font:800 10px "Lexend",sans-serif}
.hero-board{align-self:stretch;padding:26px;border:1px solid #bdc9d4;border-radius:23px;background:linear-gradient(145deg,#0a2038,#1d486d);color:#fff}.board-label{color:#a8bdcf;font:800 9px "Lexend",sans-serif;letter-spacing:2px;text-transform:uppercase}.board-title{margin-top:13px;font-size:25px;font-weight:900;line-height:1.22;letter-spacing:-.8px}.board-list{display:grid;gap:9px;margin-top:22px}.board-list li{position:relative;list-style:none;padding:10px 11px 10px 34px;border:1px solid rgba(255,255,255,.16);border-radius:11px;background:rgba(255,255,255,.06);color:#dce6ee;font-size:11px;font-weight:700;line-height:1.5}.board-list li::before{content:"✓";position:absolute;left:11px;top:10px;color:#92d4bf;font-weight:900}.hero-notice{margin-top:18px;padding:12px 13px;border-left:3px solid #8eb0cd;background:rgba(255,255,255,.08);color:#c8d7e3;font-size:10px;line-height:1.6}
.store-intro{margin-top:18px;padding:28px;border:1px solid #9cafbf;border-radius:26px;background:linear-gradient(145deg,#fdfefe,#e8eef3);box-shadow:var(--shadow)}.store-intro-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.store-intro-card{position:relative;min-height:230px;padding:22px;border:1px solid #c4d0da;border-radius:18px;background:#fff}.store-intro-card>span{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:#0a2641;color:#fff;font:900 10px "Lexend",sans-serif}.store-intro-card h3{margin-top:18px;color:var(--navy);font-size:20px;letter-spacing:-.5px}.store-intro-card p{margin-top:7px;color:#5d7185;font-size:11px;line-height:1.65}.store-intro-card ul{display:grid;gap:5px;margin-top:14px;list-style:none}.store-intro-card li{position:relative;padding-left:15px;color:#294963;font-size:10px;font-weight:800}.store-intro-card li::before{content:"✓";position:absolute;left:0;color:#47799d}
.resource-group{margin-top:18px;padding:28px;border:1px solid #c8d3dd;border-radius:26px;background:rgba(255,255,255,.86);box-shadow:var(--shadow)}.group-head{display:grid;grid-template-columns:1fr auto;gap:20px;align-items:end;margin-bottom:18px}.group-kicker{color:#71859a;font:800 9px "Lexend",sans-serif;letter-spacing:1.8px;text-transform:uppercase}.group-title{margin-top:7px;color:var(--navy);font-size:28px;letter-spacing:-1.2px}.group-desc{max-width:580px;color:#64788b;font-size:12px;line-height:1.65;text-align:right}
.lesson-plan{margin-top:18px;padding:28px;border:1px solid #7890a7;border-radius:26px;background:linear-gradient(135deg,#091f36,#1c496d);box-shadow:var(--shadow)}.lesson-plan .group-kicker{color:#a6bacb}.lesson-plan .group-title{color:#fff}.lesson-plan .group-desc{color:#c8d6e1}.lesson-plan-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}.lesson-plan-card{position:relative;display:block;min-height:178px;padding:19px;border:1px solid rgba(255,255,255,.17);border-radius:17px;background:rgba(255,255,255,.07)}.lesson-plan-card.ready{border-color:#c7d7e4;background:linear-gradient(145deg,#fff,#dce7ef);box-shadow:0 20px 40px -34px #000;transition:.18s ease}.lesson-plan-card.ready:hover{transform:translateY(-3px)}.lesson-plan-card>span{display:grid;place-items:center;width:34px;height:34px;border:1px solid rgba(255,255,255,.25);border-radius:10px;color:#a8c0d3;font:900 11px "Lexend",sans-serif}.lesson-plan-card.ready>span{border-color:#9eb1c1;background:#0b2742;color:#fff}.lesson-plan-card h3{margin-top:15px;color:#fff;font-size:17px;letter-spacing:-.4px}.lesson-plan-card p{margin-top:8px;color:#cbd8e2;font-size:11px;line-height:1.65;word-break:keep-all}.lesson-plan-card.ready h3{color:#071d33}.lesson-plan-card.ready p{color:#526a7f}.lesson-open,.lesson-coming{display:block;margin-top:14px;font-size:10px}.lesson-open{color:#1f557e}.lesson-coming{color:#8fa6b8;font-weight:700}
.resource-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.resource-card{position:relative;display:flex;min-height:340px;flex-direction:column;overflow:hidden;border:1px solid #c8d3dd;border-radius:19px;background:#fff;transition:.2s ease}.resource-card:hover{transform:translateY(-4px);border-color:#6f879d;box-shadow:0 26px 50px -34px rgba(7,29,51,.82)}.resource-card.ranked{border-color:#aebdca}.resource-preview{position:relative;display:block;height:165px;overflow:hidden;background:linear-gradient(135deg,#0b243e,#a9b8c5)}.resource-preview::after{content:"";position:absolute;inset:auto 0 0;height:62%;background:linear-gradient(180deg,transparent,rgba(4,17,31,.72));pointer-events:none}.resource-preview img{width:100%;height:100%;display:block;object-fit:cover;object-position:center;transform:scale(1.002);transition:transform .45s ease}.resource-card:hover .resource-preview img{transform:scale(1.045)}.resource-top{position:absolute;z-index:2;inset:12px 12px auto;display:flex;align-items:center;justify-content:space-between;gap:10px}.resource-type{display:inline-flex;align-items:center;gap:7px;padding:6px 8px;border:1px solid rgba(255,255,255,.42);border-radius:999px;background:rgba(5,24,42,.7);backdrop-filter:blur(10px);color:#fff;font:800 8px "Lexend",sans-serif;letter-spacing:1.35px;text-transform:uppercase}.resource-rank{display:grid;place-items:center;min-width:22px;height:22px;margin:-3px 0 -3px -4px;border-radius:999px;background:#fff;color:#0a233c;font:900 9px "Lexend",sans-serif;letter-spacing:0}.resource-arrow{display:grid;place-items:center;width:31px;height:31px;border:1px solid rgba(255,255,255,.42);border-radius:50%;background:rgba(5,24,42,.7);color:#fff;font-size:17px}.resource-body{display:flex;flex:1;flex-direction:column;padding:17px 19px 18px}.resource-card h3{color:var(--navy);font-size:20px;line-height:1.28;letter-spacing:-.6px}.resource-card p{margin-top:8px;color:#5e7285;font-size:12px;line-height:1.66;word-break:keep-all}.resource-tags{display:flex;flex-wrap:wrap;gap:5px;margin-top:auto;padding-top:14px}.resource-tags span{padding:5px 7px;border:1px solid #cbd5de;border-radius:999px;background:#f8fafb;color:#5d7185;font:750 8px "Lexend",sans-serif}.resource-guide-label{display:block;margin-top:12px;padding-top:11px;border-top:1px solid #dde4ea;color:#173f62;font-size:10px;font-weight:900}
.ref-footer{display:grid;grid-template-columns:1fr auto;gap:18px;align-items:center;margin-top:18px;padding:23px 25px;border:1px solid #203f5e;border-radius:20px;background:linear-gradient(135deg,#071c31,#173d5e);color:#d7e2eb}.ref-footer small{display:block;color:#91a9bd;font:800 8px "Lexend",sans-serif;letter-spacing:1.7px}.ref-footer b{display:block;margin-top:6px;font-size:16px}.ref-footer a{padding:10px 13px;border:1px solid rgba(255,255,255,.28);border-radius:999px;background:rgba(255,255,255,.08);font-size:10px;font-weight:850}
@media(max-width:1180px){.topic-strip{grid-template-columns:repeat(4,minmax(0,1fr))}.ref-hero{grid-template-columns:1fr}.hero-board{max-width:none}.resource-grid,.lesson-plan-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.store-intro-grid{grid-template-columns:1fr}}
@media(max-width:720px){.ref-topbar-inner,.topic-strip,.ref-shell{width:calc(100% - 24px)}.ref-topbar-inner{min-height:62px}.ref-brand small,.ref-actions .ref-action:first-child{display:none}.topic-strip{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:12px}.topic-link{padding:8px}.ref-hero{min-height:0;padding:28px 21px;border-radius:23px}.hero-title{font-size:44px;letter-spacing:-2.7px}.hero-lead{font-size:15px}.hero-board{padding:21px}.resource-group,.lesson-plan,.store-intro{padding:20px 14px;border-radius:21px}.group-head{grid-template-columns:1fr}.group-desc{text-align:left}.resource-grid,.lesson-plan-grid{grid-template-columns:1fr}.resource-card{min-height:320px}.resource-preview{height:175px}.lesson-plan-card{min-height:160px}.ref-footer{grid-template-columns:1fr}.ref-footer a{text-align:center}}