.seo-collection-page{background:linear-gradient(180deg,#f8fbff 0%,#eef4fb 100%);color:#0f172a;min-height:100vh;}
.seo-collection-hero{padding:46px 0 26px;}
.seo-collection-hero__box{background:linear-gradient(135deg,#ffffff 0%,#f5f8ff 55%,#eef4ff 100%);border:1px solid rgba(148,163,184,.22);border-radius:34px;padding:38px 34px;box-shadow:0 22px 60px rgba(15,23,42,.07);}
.seo-eyebrow{display:inline-flex;align-items:center;height:34px;padding:0 14px;border-radius:999px;background:#eaf0ff;color:#334155;font-size:13px;font-weight:900;letter-spacing:.04em;}
.seo-collection-hero h1{margin:16px 0 12px;font-size:clamp(32px,5vw,60px);line-height:1.08;letter-spacing:-.045em;color:#0f172a;}
.seo-collection-hero p{margin:0;max-width:820px;color:#475569;font-size:18px;line-height:1.75;}
.seo-collection-nav{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.seo-collection-nav a{display:inline-flex;align-items:center;min-height:40px;padding:0 15px;border-radius:999px;background:#fff;color:#1e293b;text-decoration:none;font-weight:800;border:1px solid #dbe5f0;box-shadow:0 6px 16px rgba(15,23,42,.04);}
.seo-collection-nav a:hover{background:#0f172a;color:#fff;border-color:#0f172a;}
.seo-section{padding:18px 0 44px;}
.seo-section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:18px;}
.seo-section__head h2{margin:0;font-size:30px;letter-spacing:-.03em;color:#0f172a;}
.seo-section__head p{margin:7px 0 0;color:#64748b;line-height:1.65;}
.keyword-cloud{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-start;}
.keyword-chip{appearance:none;border:none;display:inline-flex;align-items:center;gap:9px;min-height:44px;padding:0 15px;border-radius:999px;background:#fff;border:1px solid #dbe5f0;color:#0f172a;box-shadow:0 8px 20px rgba(15,23,42,.045);cursor:pointer;transition:.18s ease;}
.keyword-chip span{display:inline-flex;align-items:center;justify-content:center;min-width:25px;height:25px;border-radius:50%;background:#eef2ff;color:#334155;font-size:11px;font-weight:900;}
.keyword-chip strong{font-size:14px;line-height:1;}
.keyword-chip:hover,.keyword-chip.is-active{background:#0f172a;color:#fff;border-color:#0f172a;transform:translateY(-1px);}
.keyword-chip:hover span,.keyword-chip.is-active span{background:rgba(255,255,255,.18);color:#fff;}
.topic-menu{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;}
.topic-chip{appearance:none;text-align:left;border:none;background:#fff;border:1px solid #dbe5f0;border-radius:22px;padding:18px;cursor:pointer;box-shadow:0 10px 24px rgba(15,23,42,.045);transition:.18s ease;}
.topic-chip strong{display:block;font-size:18px;color:#0f172a;margin-bottom:6px;}
.topic-chip span{display:block;color:#64748b;line-height:1.55;font-size:14px;}
.topic-chip:hover,.topic-chip.is-active{background:#0f172a;border-color:#0f172a;transform:translateY(-1px);}
.topic-chip:hover strong,.topic-chip.is-active strong,.topic-chip:hover span,.topic-chip.is-active span{color:#fff;}
.event-filter-row{display:flex;flex-wrap:wrap;gap:10px;}
.event-filter{appearance:none;border:none;min-height:42px;padding:0 16px;border-radius:999px;background:#fff;border:1px solid #dbe5f0;color:#0f172a;font-weight:900;cursor:pointer;}
.event-filter:hover,.event-filter.is-active{background:#0f172a;color:#fff;border-color:#0f172a;}
.seo-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.seo-card{background:#fff;border:1px solid #e3eaf3;border-radius:24px;box-shadow:0 12px 34px rgba(15,23,42,.055);display:flex;flex-direction:column;min-height:100%;cursor:pointer;transition:.18s ease;overflow:hidden;}
.seo-card:hover{transform:translateY(-2px);box-shadow:0 18px 46px rgba(15,23,42,.09);border-color:#c9d7ea;}
.seo-card__body{padding:21px;display:flex;flex-direction:column;min-height:100%;}
.seo-card__meta{font-size:12px;font-weight:900;color:#64748b;text-transform:uppercase;letter-spacing:.06em;margin-bottom:10px;}
.seo-card h3{margin:0 0 10px;font-size:20px;line-height:1.38;color:#0f172a;}
.seo-card p{margin:0 0 14px;color:#475569;line-height:1.65;font-size:15px;}
.seo-tags{display:flex;flex-wrap:wrap;gap:7px;margin:12px 0;}
.seo-tags span{display:inline-flex;align-items:center;height:28px;padding:0 10px;border-radius:999px;background:#f1f5f9;color:#475569;font-size:12px;font-weight:800;}
.seo-card__link{margin-top:auto;display:inline-flex;align-items:center;color:#1d4ed8;font-weight:900;text-decoration:none;}
.seo-empty{grid-column:1/-1;background:#fff;border:1px dashed #cbd5e1;border-radius:20px;padding:26px;text-align:center;color:#64748b;}
.guide-steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:20px;}
.guide-step{background:#fff;border:1px solid #e3eaf3;border-radius:22px;padding:22px;}
.guide-step strong{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;background:#0f172a;color:#fff;margin-bottom:14px;}
.guide-step h3{margin:0 0 8px;color:#0f172a;line-height:1.4;}
.guide-step p{margin:0;color:#64748b;line-height:1.65;}
.seo-detail-modal[hidden]{display:none!important;}
.seo-detail-modal{position:fixed;inset:0;z-index:9999;display:grid;place-items:center;padding:22px;}
.seo-detail-dim{position:absolute;inset:0;background:rgba(15,23,42,.58);backdrop-filter:blur(5px);}
.seo-detail-panel{position:relative;width:min(760px,100%);max-height:min(82vh,760px);overflow:auto;background:#fff;border-radius:28px;padding:30px;box-shadow:0 30px 90px rgba(15,23,42,.32);}
.seo-detail-close{position:absolute;right:18px;top:18px;width:38px;height:38px;border-radius:50%;border:none;background:#f1f5f9;font-size:24px;cursor:pointer;}
.seo-detail-kicker{display:inline-flex;height:30px;align-items:center;padding:0 12px;border-radius:999px;background:#eef2ff;color:#334155;font-weight:900;font-size:12px;}
.seo-detail-panel h2{margin:14px 44px 12px 0;font-size:30px;line-height:1.28;letter-spacing:-.03em;color:#0f172a;}
.seo-detail-desc{font-size:16px;line-height:1.8;color:#475569;white-space:pre-line;}
.seo-detail-meta{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0;}
.seo-detail-meta span{display:inline-flex;align-items:center;min-height:30px;padding:0 10px;border-radius:999px;background:#f8fafc;border:1px solid #e2e8f0;color:#475569;font-size:13px;font-weight:800;}
.seo-detail-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
@media(max-width:900px){.seo-grid,.topic-menu,.guide-steps{grid-template-columns:1fr 1fr;}.seo-section__head{display:block;}}
@media(max-width:640px){.seo-collection-hero{padding:28px 0 18px}.seo-collection-hero__box{padding:26px 20px;border-radius:26px}.seo-grid,.topic-menu,.guide-steps{grid-template-columns:1fr}.seo-card__body{padding:18px}.seo-detail-panel{padding:24px 18px;border-radius:24px}.keyword-chip{min-height:40px;padding:0 12px}.keyword-chip strong{font-size:13px}}