.v73-grade-detail{padding:34px 0;background:linear-gradient(180deg,#f7fbff 0%,#fff 100%)}
.v73-grade-shell{border:1px solid #dbe7f3;border-radius:24px;background:#fff;box-shadow:0 14px 38px rgba(24,65,104,.07);overflow:hidden}
.v73-grade-head{padding:30px 32px 24px;background:linear-gradient(135deg,#f8fbff 0%,#eef7ff 100%);border-bottom:1px solid #dfeaf4}
.v73-grade-head h2{margin:8px 0 10px;font-size:clamp(24px,3vw,34px);line-height:1.3;color:#132b45;letter-spacing:-.04em}
.v73-grade-head>p{margin:0;max-width:980px;color:#42566b;line-height:1.8;font-size:16px}
.v73-current-focus{display:flex;gap:10px;align-items:flex-start;margin-top:18px!important;padding:14px 16px;border-radius:14px;background:#fff;border:1px solid #d7e5f2}
.v73-current-focus strong{flex:0 0 auto;color:#0b5aa6}.v73-current-focus span{color:#33485d}
.v73-application-note{margin:12px 0 0!important;color:#51667a!important;font-size:14px!important;line-height:1.65!important}
.v73-grade-nav{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.v73-grade-nav a{display:inline-flex;align-items:center;justify-content:center;min-width:56px;padding:8px 12px;border:1px solid #b9d3ea;border-radius:999px;background:#fff;color:#164f82;font-weight:800;text-decoration:none;white-space:nowrap}
.v73-grade-nav a:hover{background:#eaf5ff}
.v73-grade-meta{display:flex;flex-wrap:wrap;gap:8px 14px;margin-top:14px;color:#6a7886;font-size:13px}
.v73-grade-meta span:before{content:'•';margin-right:6px;color:#4f8ec8}
.v73-grade-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;padding:24px 28px 28px}
.v73-grade-card{min-width:0;border:1px solid #dfe7ef;border-radius:18px;padding:20px;background:#fff;scroll-margin-top:92px}
.v73-grade-card:hover{border-color:#b8d1e7;box-shadow:0 8px 24px rgba(31,72,110,.07)}
.v73-grade-top{display:flex;align-items:center;gap:10px;margin-bottom:12px}.v73-grade-top span{display:inline-flex;align-items:center;justify-content:center;width:44px;height:28px;border-radius:999px;background:#0d4f89;color:#fff;font-weight:900;font-size:14px;white-space:nowrap}.v73-grade-top b{font-size:14px;color:#49647d;line-height:1.35}
.v73-grade-card h3{margin:0 0 10px;color:#15324c;font-size:19px;line-height:1.45;letter-spacing:-.03em}
.v73-grade-focus{margin:0 0 15px;padding:11px 12px;border-radius:11px;background:#f4f9fd;color:#174f7c;font-weight:800;line-height:1.6}
.v73-grade-card dl{margin:0}.v73-grade-card dl>div{display:grid;grid-template-columns:72px 1fr;gap:8px;padding:11px 0;border-top:1px dashed #dfe5eb}.v73-grade-card dt{font-weight:900;color:#355b7b}.v73-grade-card dd{margin:0;color:#4a5968;line-height:1.7;word-break:keep-all}
.v73-grade-bottom{margin:0 28px 28px;padding:17px 19px;border-radius:14px;background:#f8fafc;border:1px solid #e1e7ed}.v73-grade-bottom strong{display:block;margin-bottom:6px;color:#263f56}.v73-grade-bottom p{margin:0;color:#526272;line-height:1.75}
@media(max-width:980px){.v73-grade-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.v73-grade-detail{padding:24px 0}.v73-grade-shell{border-radius:18px}.v73-grade-head{padding:23px 18px 20px}.v73-grade-head h2{font-size:24px}.v73-grade-head>p{font-size:15px;line-height:1.75}.v73-current-focus{display:block}.v73-current-focus strong{display:block;margin-bottom:4px}.v73-grade-nav{gap:6px}.v73-grade-nav a{min-width:48px;padding:7px 10px;font-size:14px}.v73-grade-meta{display:block}.v73-grade-meta span{display:block;margin-top:5px}.v73-grade-grid{grid-template-columns:1fr;padding:18px 14px 20px;gap:12px}.v73-grade-card{padding:17px 15px}.v73-grade-card h3{font-size:18px}.v73-grade-card dl>div{grid-template-columns:64px 1fr;gap:7px}.v73-grade-bottom{margin:0 14px 18px;padding:15px}.v73-grade-card dd{word-break:normal}}
@media(max-width:380px){.v73-grade-head{padding-left:14px;padding-right:14px}.v73-grade-card dl>div{display:block}.v73-grade-card dt{margin-bottom:4px}.v73-grade-top{align-items:flex-start}.v73-grade-top b{font-size:13px}}