.browser-support-card,.browser-invite-card{position:relative;overflow:hidden;grid-column:1/-1;padding:24px}
.browser-support-card::before,.browser-invite-card::before{content:"";position:absolute;inset:-35% auto auto 65%;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(41,227,154,.16),transparent 70%);pointer-events:none}
.browser-support-card .section-heading,.browser-invite-card .invite-hero-row{position:relative;z-index:1}
.support-invite-result{margin-top:18px;padding:18px;border:1px solid var(--line);border-radius:20px;background:rgba(7,18,31,.42)}
.support-invite-result>span{display:block;color:var(--muted);font-size:.82rem;text-transform:uppercase;letter-spacing:.08em;margin-bottom:5px}
.support-invite-result>strong{display:block;font-size:clamp(1.8rem,5vw,3rem);letter-spacing:.12em;margin-bottom:14px}
.invite-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.danger-btn{border:1px solid rgba(255,95,107,.45);background:rgba(255,95,107,.09);color:#ffb5bb;border-radius:14px;padding:12px 16px;font-weight:700;cursor:pointer}
.invite-hero-row{display:flex;gap:24px;justify-content:space-between;align-items:flex-start}
.invite-hero-row h1{margin:.35rem 0 .6rem;font-size:clamp(2rem,5vw,4rem);line-height:1.02}
.browser-flow-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:22px 0}
.browser-flow-steps span{display:flex;align-items:center;gap:10px;padding:12px 14px;border:1px solid var(--line);border-radius:16px;background:rgba(7,18,31,.35)}
.browser-flow-steps b{display:grid;place-items:center;min-width:28px;height:28px;border-radius:50%;background:var(--accent);color:#06130e}
.invite-permissions{margin:18px 0;border:1px solid var(--line);border-radius:18px;padding:14px 16px;display:grid;gap:10px}
.invite-permissions legend{padding:0 8px;color:var(--muted);font-size:.84rem;text-transform:uppercase;letter-spacing:.08em}
.invite-permissions label{display:flex;align-items:flex-start;gap:10px}
.invite-permissions small{color:var(--muted);margin-left:4px}
.browser-share-cta{width:100%;font-size:1.05rem;padding:15px 18px}
.browser-vs-control{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:18px}
.browser-vs-control>div{border:1px solid var(--line);border-radius:16px;padding:14px;display:grid;gap:4px}
.browser-vs-control span{color:var(--muted);font-size:.9rem}
body.invite-mode .home-grid{grid-template-columns:minmax(0,920px);justify-content:center}
body.invite-mode .invite-hidden{display:none!important}
body.invite-mode .home-legal-footer{grid-column:1}
body.invite-mode .topbar .intro-link{display:flex}
.intro-shell{max-width:1180px;margin:0 auto;padding:34px 22px 60px}
.intro-hero{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:center}
.intro-hero-copy h1{font-size:clamp(2.4rem,6vw,5rem);line-height:.98;margin:.45rem 0 1rem}
.intro-hero-copy p{font-size:1.08rem;color:var(--muted);max-width:720px}
.intro-cover{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:24px;border:1px solid var(--line);box-shadow:0 24px 70px rgba(0,0,0,.32)}
.intro-cta{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.intro-section{margin-top:26px}
.choice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.choice-card{display:grid;gap:10px;padding:22px;border:1px solid var(--line);border-radius:24px;background:var(--panel)}
.choice-card .choice-icon{font-size:2rem}.choice-card p{color:var(--muted);margin:0}.choice-card .primary-btn,.choice-card .secondary-btn{margin-top:auto;text-align:center;text-decoration:none}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.step-card{padding:18px;border-radius:20px;border:1px solid var(--line);background:rgba(7,18,31,.36)}.step-card b{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--accent);color:#06130e;margin-bottom:12px}
.compat-table{width:100%;border-collapse:collapse;overflow:hidden;border-radius:18px}.compat-table th,.compat-table td{padding:13px 14px;border-bottom:1px solid var(--line);text-align:left}.compat-table th{color:var(--muted);font-size:.82rem;text-transform:uppercase;letter-spacing:.06em}.compat-table td:not(:first-child){text-align:center}
.intro-note{padding:18px;border:1px solid rgba(41,227,154,.3);background:rgba(41,227,154,.06);border-radius:20px}
@media(max-width:900px){.intro-hero,.choice-grid,.steps-grid{grid-template-columns:1fr}.browser-flow-steps{grid-template-columns:1fr}.browser-vs-control{grid-template-columns:1fr}.invite-hero-row{display:grid}.intro-cover{order:-1}}
@media(max-width:620px){.intro-shell{padding:20px 14px 42px}.support-invite-result>strong{font-size:1.65rem}.invite-actions>*{width:100%;text-align:center}.compat-table{font-size:.84rem}.compat-table th,.compat-table td{padding:10px 8px}}