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var(--dbh-page-gutter)));--dbh-header-height:104px;--dbh-btn-height:52px;--dbh-btn-padding-x:22px;--dbh-btn-primary-bg:linear-gradient(180deg,#1D75FF,#1358CF);--dbh-btn-primary-text:#FFFFFF;--dbh-btn-aqua-bg:linear-gradient(180deg,#57E6DE,#2FD1CA);--dbh-btn-aqua-text:#08305E;--dbh-btn-success-bg:linear-gradient(180deg,#66EF23,#54E31D 55%,#43CD17);--dbh-btn-success-text:#FFFFFF;--dbh-btn-ghost-bg:#FFFFFF;--dbh-btn-ghost-text:var(--dbh-primary);--dbh-btn-ghost-border:rgba(176,122,18,0.20);--dbh-btn-premium-bg:linear-gradient(180deg,#FFF4DA,#F7E3AF);--dbh-btn-premium-text:var(--dbh-gold-dark);--dbh-card-bg:var(--dbh-surface);--dbh-card-bg-soft:var(--dbh-surface-soft);--dbh-card-border:1px solid var(--dbh-border);--dbh-card-border-warm:1px solid var(--dbh-border-warm);--dbh-card-radius:var(--dbh-radius-lg);--dbh-card-padding:24px;--dbh-tier-premium-bg:var(--dbh-gold-soft);--dbh-tier-premium-text:var(--dbh-gold-dark);--dbh-tier-golden-bg:#F8F2E7;--dbh-tier-golden-text:#8F6A1C;--dbh-tier-silver-bg:#EEF2F7;--dbh-tier-silver-text:#617086}html{scroll-behavior:smooth}body{font-family:var(--dbh-font-base);background:var(--dbh-bg);color:var(--dbh-text)}.dbh-shell{width:100%}.dbh-section{width:var(--dbh-section-width);margin:24px auto 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8px;color:var(--dbh-primary);font-size:var(--dbh-fs-xl);font-weight:800}.dbh-card-text{margin:0;color:var(--dbh-text-soft);font-size:var(--dbh-fs-md);line-height:var(--dbh-lh-relaxed);font-weight:600}.dbh-btn{min-height:var(--dbh-btn-height);padding:0 var(--dbh-btn-padding-x);border-radius:var(--dbh-radius-pill);display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;cursor:pointer;text-decoration:none;font-size:15px;font-weight:800;transition:transform .18s ease,box-shadow .18s ease,opacity .18s ease}.dbh-btn:hover{transform:translateY(-1px)}.dbh-btn:disabled{opacity:.65;cursor:not-allowed;transform:none}.dbh-btn-primary{background:var(--dbh-btn-primary-bg);color:var(--dbh-btn-primary-text)}.dbh-btn-aqua,.dbh-btn-primary{box-shadow:var(--dbh-shadow-md)}.dbh-btn-aqua{background:var(--dbh-btn-aqua-bg);color:var(--dbh-btn-aqua-text)}.dbh-btn-success{background:var(--dbh-btn-success-bg);color:var(--dbh-btn-success-text);box-shadow:0 12px 24px 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