:root{
  --yitm-bg:#f6f8fb; --yitm-card:#ffffff; --yitm-ink:#122033; --yitm-muted:#526173;
  --yitm-line:#dbe3ef; --yitm-brand:#0f5e9c; --yitm-brand-2:#153e75;
  --yitm-soft:#eaf5ff; --yitm-accent:#ffb94a; --yitm-radius:22px;
  --yitm-shadow:0 18px 45px rgba(18,32,51,.12);
}
*{box-sizing:border-box}
body{margin:0;background:var(--yitm-bg);color:var(--yitm-ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;line-height:1.65;font-size:17px}
a{color:var(--yitm-brand);text-decoration:none}a:hover{text-decoration:underline}
.yitm-post{max-width:1180px;margin:0 auto;padding:22px 18px 54px}.yitm-wrap{max-width:1120px;margin:0 auto}
.yitm-breadcrumbs{font-size:.94rem;color:var(--yitm-muted);display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:4px 0 20px}.yitm-breadcrumbs a{color:var(--yitm-brand-2)}
.yitm-hero{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);gap:30px;align-items:center;background:linear-gradient(135deg,#fff 0%,#edf7ff 100%);border:1px solid var(--yitm-line);border-radius:30px;box-shadow:var(--yitm-shadow);padding:34px;margin-bottom:24px;overflow:hidden}.yitm-hero-copy{min-width:0}.yitm-badge{display:inline-flex;align-items:center;gap:8px;margin:0 0 12px;padding:7px 12px;border-radius:999px;background:#dff0ff;color:#174b7a;font-weight:700;font-size:.88rem}.yitm-hero h1{font-size:clamp(2rem,4vw,3.55rem);line-height:1.05;margin:0 0 16px;letter-spacing:-.04em}.yitm-subtitle{font-size:1.15rem;color:#33445a;margin:0 0 18px;max-width:760px}.yitm-chip-row{display:flex;flex-wrap:wrap;gap:10px;margin:14px 0}.yitm-chip{display:inline-flex;align-items:center;border:1px solid #c7d8ea;background:#fff;border-radius:999px;padding:7px 11px;font-size:.88rem;font-weight:650;color:#31465f}.yitm-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}.yitm-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;border:1px solid var(--yitm-brand);background:var(--yitm-brand);color:#fff!important;font-weight:800;padding:11px 18px;box-shadow:0 10px 22px rgba(15,94,156,.18)}.yitm-btn:nth-child(n+2){background:#fff;color:var(--yitm-brand)!important}.yitm-btn:hover{text-decoration:none;transform:translateY(-1px)}
.yitm-hero-media{margin:0}.yitm-hero-media img{display:block;width:100%;height:auto;border-radius:24px;border:1px solid #d6e2ee;box-shadow:0 18px 32px rgba(18,32,51,.14);background:#fff}
.yitm-card{background:var(--yitm-card);border:1px solid var(--yitm-line);border-radius:var(--yitm-radius);box-shadow:0 10px 26px rgba(18,32,51,.07);padding:24px;margin:20px 0}.yitm-card-soft{background:linear-gradient(135deg,#ffffff 0%,#f1f8ff 100%)}.yitm-card h2{font-size:clamp(1.45rem,2.5vw,2rem);line-height:1.17;margin:0 0 12px;letter-spacing:-.02em}.yitm-card h3{font-size:1.18rem;line-height:1.24;margin:10px 0 8px}.yitm-card p{margin:0 0 12px}.yitm-card ul{margin:10px 0 0;padding-left:22px}.yitm-card li{margin:6px 0}.yitm-short-answer{border-left:6px solid var(--yitm-brand)}.yitm-what-you-get{border-left:6px solid var(--yitm-accent)}
.yitm-guide-grid,.yitm-related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:16px}.yitm-guide-card{display:block;margin:0;padding:20px;transition:.18s ease;color:var(--yitm-ink)}.yitm-guide-card:hover{transform:translateY(-2px);text-decoration:none;border-color:#b2cbe2;box-shadow:0 16px 32px rgba(18,32,51,.12)}.yitm-guide-card b{display:inline-flex;margin-top:8px;color:var(--yitm-brand)}
.yitm-article-body{font-size:1.02rem}.yitm-article-body h2{margin-top:30px}.yitm-faq details{background:#fff;border:1px solid var(--yitm-line);border-radius:16px;margin:10px 0;padding:14px 16px}.yitm-faq summary{cursor:pointer;font-weight:800;color:#172941}.yitm-card-cta{background:linear-gradient(135deg,var(--yitm-brand-2),var(--yitm-brand));color:#fff}.yitm-card-cta a{color:#fff}.yitm-card-cta .yitm-btn{background:#fff;color:var(--yitm-brand)!important;border-color:#fff}.yitm-about,.yitm-footer-note{color:var(--yitm-muted);font-size:.96rem}.yitm-footer-note{border-top:1px solid var(--yitm-line);margin-top:26px;padding-top:18px;text-align:center}
@media(max-width:860px){.yitm-post{padding:14px 12px 38px}.yitm-hero{grid-template-columns:1fr;padding:22px;border-radius:24px}.yitm-guide-grid,.yitm-related-grid{grid-template-columns:1fr}.yitm-card{padding:20px}.yitm-actions{display:grid;grid-template-columns:1fr}.yitm-btn{width:100%}}