:root{--navy:#062B5F;--blue:#0B4EAE;--sky:#EEF5FC;--ice:#F7FAFD;--text:#0F1F35;--muted:#5A6D86;--line:#D7E2F0;--gold:#C89B3C}
*{box-sizing:border-box}
body{margin:0;font-family:"Noto Sans SC","PingFang SC",Inter,Segoe UI,Arial,sans-serif;color:var(--text);background:#fff;line-height:1.8}
a{text-decoration:none;color:inherit}
.wrap{max-width:1180px;margin:0 auto;padding:0 32px}
.top{height:78px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;position:sticky;top:0;z-index:20}
.top .wrap{display:flex;align-items:center;justify-content:space-between;width:100%}
.brand{display:flex;gap:12px;align-items:center;color:var(--navy);font-weight:900;font-size:28px;letter-spacing:2px;text-decoration:none}
.brand small{display:block;font-size:12px;line-height:1.3;letter-spacing:0;font-weight:700}
.mark{width:46px;height:38px;background:linear-gradient(135deg,#9eb8d5,#0757c8);clip-path:polygon(5% 10%,80% 0,100% 22%,42% 53%,100% 78%,80% 100%,5% 90%,42% 52%)}
nav{display:flex;align-items:center;gap:22px;font-size:15px;font-weight:700}
nav a.active{color:var(--blue);border-bottom:3px solid var(--blue);padding-bottom:10px}
.btn{display:inline-flex;border-radius:4px;padding:11px 18px;font-weight:700;font-size:14px;background:var(--navy);color:#fff;border:1.5px solid var(--navy);cursor:pointer}
.article-hero{background:linear-gradient(110deg,#041C3D,#072F6B 50%,#0C4FA8);color:white;padding:72px 0 64px}
.article-meta{display:flex;gap:16px;align-items:center;margin-bottom:22px}
.tag-pill{background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.25);color:#BFD7F8;font-size:12px;font-weight:800;letter-spacing:.05em;padding:5px 12px;border-radius:20px}
.article-date{color:#7AAAD8;font-size:13px}
.article-hero h1{font-size:42px;line-height:1.3;margin:0 0 20px;max-width:820px}
.article-hero .lead{font-size:18px;color:#C8DEFA;max-width:700px;line-height:1.75;margin:0}
.article-body{max-width:780px;margin:0 auto;padding:72px 32px 96px}
.article-body h2{font-size:26px;color:var(--navy);margin:56px 0 16px;line-height:1.35}
.article-body h3{font-size:19px;color:var(--navy);margin:36px 0 12px}
.article-body p{font-size:17px;color:#2A3A4F;line-height:1.85;margin:0 0 22px}
.article-body ul{margin:0 0 24px;padding-left:0;list-style:none}
.article-body ul li{font-size:17px;color:#2A3A4F;line-height:1.75;padding:8px 0 8px 28px;position:relative;border-bottom:1px solid var(--line)}
.article-body ul li:last-child{border-bottom:0}
.article-body ul li:before{content:"";position:absolute;left:0;top:18px;width:8px;height:8px;border-radius:50%;background:var(--blue)}
.back-link{display:inline-flex;align-items:center;gap:8px;color:var(--muted);font-size:14px;margin-bottom:32px}
.back-link:hover{color:var(--navy)}
.pullquote{background:linear-gradient(135deg,#FFF8E8,#FFF3D4);border-left:4px solid var(--gold);border-radius:0 12px 12px 0;padding:28px 32px;margin:40px 0}
.pullquote p{font-size:19px;color:#6B4A00;font-weight:700;margin:0;line-height:1.6}

/* stat/region (article1) */
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:40px 0}
.stat-box{background:var(--sky);border:1px solid var(--line);border-radius:12px;padding:24px;text-align:center}
.stat-box strong{display:block;font-size:30px;color:var(--navy);font-weight:800;margin-bottom:6px}
.stat-box span{font-size:13px;color:var(--muted);line-height:1.5}
.region-table{border:1px solid var(--line);border-radius:14px;overflow:hidden;margin:32px 0}
.region-row{display:grid;grid-template-columns:180px 1fr;gap:20px;align-items:start;padding:22px 24px;border-bottom:1px solid var(--line);background:#fff}
.region-row:last-child{border-bottom:0}
.region-row:nth-child(even){background:var(--ice)}
.region-name{font-weight:800;color:var(--navy);font-size:15px}
.region-share{font-size:22px;font-weight:800;color:var(--blue)}
.region-desc{font-size:14px;color:var(--muted);line-height:1.7}

/* compare/cost (article2) */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:40px 0}
.compare-col{border-radius:16px;padding:32px;border:2px solid var(--line)}
.compare-col.col-amazon{background:#FFF5F5;border-color:#FFCDD2}
.compare-col.col-own{background:#F0FFF4;border-color:#A8D8B9}
.compare-col h3{font-size:16px;margin:0 0 20px}
.compare-col h3.amazon-title{color:#C62828}
.compare-col h3.own-title{color:#1B5E20}
.fee-line{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid rgba(0,0,0,.08);font-size:14.5px}
.fee-line:last-child{border-bottom:0;font-weight:800;padding-top:14px;margin-top:4px}
.fee-label{color:#2A3A4F}
.fee-val.red{color:#C62828;font-weight:700}
.fee-val.green{color:#1B5E20;font-weight:700}
.fee-val.bold{font-size:17px}
.result-bar{display:flex;align-items:center;gap:16px;background:var(--navy);color:white;border-radius:12px;padding:20px 24px;margin-top:20px}
.result-bar strong{font-size:26px;font-weight:800}
.result-bar span{font-size:13.5px;color:#C9DCF4;line-height:1.5}
.cost-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:32px 0}
.cost-card{background:var(--sky);border:1px solid var(--line);border-radius:12px;padding:22px}
.cost-card h4{font-size:15px;color:var(--navy);margin:0 0 8px}
.cost-card p{font-size:14px;color:var(--muted);margin:0;line-height:1.65}

/* generic numbered/insight/gap boxes used across many articles */
.numlist{border:1px solid var(--line);border-radius:10px;overflow:hidden;margin:24px 0}
.numlist .item{display:grid;grid-template-columns:52px 1fr;gap:16px;padding:22px 24px;border-bottom:1px solid var(--line)}
.numlist .item:last-child{border-bottom:none}
.numlist .circle{width:34px;height:34px;border-radius:50%;background:var(--navy);color:#fff;font-weight:800;font-size:.95rem;display:flex;align-items:center;justify-content:center}
.numlist h4{margin:0 0 6px;font-size:1rem;color:var(--text);font-weight:700}
.numlist p{margin:0;font-size:.92rem;color:var(--muted)}
.insight{background:var(--sky);border-radius:8px;padding:16px 20px;margin:16px 0 22px;font-size:.95rem}
.insight b{color:var(--navy)}
.card{background:var(--sky);border:1px solid var(--line);border-radius:10px;padding:20px 22px;margin:18px 0}
.card h4{font-size:.85rem;color:var(--blue);margin-bottom:8px;text-transform:uppercase;letter-spacing:.04em;font-weight:800}
.checklist{list-style:none;padding-left:0}
.checklist li{padding-left:28px;position:relative}
.checklist li::before{content:"×";position:absolute;left:0;color:var(--blue);font-weight:800}
.gap-block{margin:32px 0}
.gap-block .gnum{color:var(--blue);font-weight:800;font-size:.8rem;letter-spacing:.04em}

.cta-block{background:var(--navy);border-radius:18px;padding:48px;margin:64px 0 0;text-align:center}
.cta-block h2{color:white;font-size:26px;margin:0 0 12px}
.cta-block p{color:#C9DCF4;margin:0 0 28px;font-size:16px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn-white{display:inline-flex;border-radius:4px;padding:14px 24px;font-weight:700;font-size:15px;background:white;color:var(--navy);border:none;cursor:pointer}
.btn-outline{display:inline-flex;border-radius:4px;padding:14px 24px;font-weight:700;font-size:15px;background:transparent;color:white;border:2px solid rgba(255,255,255,.4);cursor:pointer}
.source-note{background:var(--ice);border:1px solid var(--line);border-radius:10px;padding:20px 24px;margin-top:48px}
.source-note p{font-size:13px;color:var(--muted);margin:0;line-height:1.7}
.footer{padding:34px 0;background:#fff;border-top:1px solid var(--line)}
.footer .wrap{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px}
.footer a{color:var(--muted);text-decoration:none}
.footer a:hover{color:var(--navy);text-decoration:underline}
.hamburger{display:none}
@media(max-width:720px){
  .article-hero h1{font-size:30px}
  .stat-row,.compare-grid,.cost-cards{grid-template-columns:1fr}
  .region-row{grid-template-columns:1fr;gap:8px}
  .article-body{padding:48px 20px 72px}
  .wrap{padding-left:20px;padding-right:20px}
  nav{display:none}
  .hamburger{display:block}
}

/* category grid / process steps / cost table (article4+) */
.cat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:32px 0}
.cat-item{background:var(--sky);border:1px solid var(--line);border-radius:10px;padding:16px 20px;display:flex;align-items:center;gap:12px}
.cat-item .dot{width:10px;height:10px;border-radius:50%;background:var(--blue);flex-shrink:0}
.cat-item p{font-size:15px;color:var(--text);margin:0;font-weight:600}
.process{border:1px solid var(--line);border-radius:16px;overflow:hidden;margin:32px 0}
.process-step{display:grid;grid-template-columns:80px 1fr;align-items:start;padding:28px 24px;border-bottom:1px solid var(--line);background:#fff}
.process-step:last-child{border-bottom:0}
.process-step:nth-child(even){background:var(--ice)}
.step-circle{width:52px;height:52px;border-radius:50%;background:var(--navy);color:white;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;flex-shrink:0}
.process-step h4{font-size:17px;color:var(--navy);margin:0 0 8px}
.process-step p{font-size:15px;color:var(--muted);margin:0;line-height:1.6}
.cost-table{border:1px solid var(--line);border-radius:12px;overflow:hidden;margin:32px 0}
.cost-row{display:grid;grid-template-columns:1fr auto auto;gap:16px;padding:16px 22px;border-bottom:1px solid var(--line);align-items:center}
.cost-row:last-child{border-bottom:0}
.cost-row:first-child{background:var(--navy);color:white;font-weight:800;font-size:13px;letter-spacing:.04em}
.cost-row.data{font-size:15px}
.cost-row.data:nth-child(even){background:var(--ice)}
.cost-val{text-align:right;font-weight:700;color:var(--navy)}
.cost-time{text-align:right;color:var(--muted);font-size:14px}
@media(max-width:720px){.cat-grid{grid-template-columns:1fr}.process-step{grid-template-columns:60px 1fr}.cost-row{grid-template-columns:1fr auto}}