/* ==========================================================================
   Sytronic Chat — landing page
   ========================================================================== */

.landing-page { overflow-x: clip; }
.landing { position: relative; min-height: 100dvh; overflow: clip; }

.shell {
    width: min(1180px, calc(100% - 48px));
    margin-inline: auto;
}

/* --------------------------------------------------------------------------
   Ambient background
   -------------------------------------------------------------------------- */
.aurora { position: absolute; inset: 0 0 auto; height: 880px; pointer-events: none; z-index: 0; }
.aurora-blob {
    position: absolute; border-radius: 50%; filter: blur(80px); opacity: .5;
}
.aurora-a {
    width: 620px; height: 620px; top: -200px; right: -80px;
    background: radial-gradient(circle, color-mix(in srgb, var(--primary) 55%, transparent), transparent 68%);
}
.aurora-b {
    width: 520px; height: 520px; top: 120px; left: -220px;
    background: radial-gradient(circle, color-mix(in srgb, var(--secondary) 42%, transparent), transparent 70%);
    opacity: .4;
}
.aurora-rings {
    position: absolute; inset: 0;
    background-image:
        radial-gradient(circle at 78% 22%, color-mix(in srgb, var(--outline-v) 55%, transparent) 0 1px, transparent 1.4px);
    background-size: 28px 28px;
    -webkit-mask-image: radial-gradient(ellipse 55% 60% at 72% 30%, #000 0%, transparent 72%);
    mask-image: radial-gradient(ellipse 55% 60% at 72% 30%, #000 0%, transparent 72%);
    opacity: .8;
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.site-header {
    position: sticky; top: 0; z-index: 50;
    background: color-mix(in srgb, var(--surface) 82%, transparent);
    border-bottom: 1px solid color-mix(in srgb, var(--outline-v) 70%, transparent);
    -webkit-backdrop-filter: saturate(140%) blur(18px);
    backdrop-filter: saturate(140%) blur(18px);
}
.header-inner {
    display: flex; align-items: center; gap: 28px; height: 74px;
}
.site-nav {
    display: flex; align-items: center; gap: 2px;
}
.site-nav a {
    display: inline-flex; align-items: center; gap: 3px;
    padding: 8px 13px; border-radius: 999px;
    color: var(--on-sv); font-size: 13px; font-weight: 800;
    transition: background .18s, color .18s;
}
.site-nav a:hover { background: var(--surface-ch); color: var(--on-surface); }
.site-nav .icon { width: 13px; height: 13px; opacity: .7; }
.header-actions {
    display: flex; align-items: center; gap: 10px; margin-left: auto;
}
.header-login .icon { width: 16px; height: 16px; }

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */
.hero {
    position: relative; z-index: 1;
    display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    gap: clamp(28px, 4vw, 64px); align-items: center;
    padding: clamp(48px, 7vw, 92px) 0 clamp(48px, 6vw, 84px);
}
.hero-copy { max-width: 590px; }
.eyebrow {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 7px 14px; border-radius: 999px;
    border: 1px solid var(--outline-v);
    background: color-mix(in srgb, var(--surface-cl) 70%, transparent);
    font-size: 12px; font-weight: 800; letter-spacing: .01em; color: var(--on-sv);
    box-shadow: var(--shadow-sm);
}
.eyebrow-plain {
    border: 0; background: none; padding: 0; box-shadow: none;
    color: var(--primary); font-size: 12px; font-weight: 900;
    letter-spacing: .16em; text-transform: uppercase;
}
.live-dot {
    width: 7px; height: 7px; flex: none; border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 22%, transparent);
    animation: pulse-dot 2.4s ease-in-out infinite;
}
@keyframes pulse-dot {
    0%, 100% { box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 22%, transparent); }
    50% { box-shadow: 0 0 0 6px color-mix(in srgb, var(--primary) 8%, transparent); }
}

.hero h1 {
    margin: 22px 0 0;
    font-size: clamp(42px, 5.3vw, 68px);
    line-height: 1.06; letter-spacing: -.035em; font-weight: 900;
}
.grad {
    background: linear-gradient(100deg, var(--primary) 8%, var(--tertiary) 55%, var(--secondary) 105%);
    -webkit-background-clip: text; background-clip: text; color: transparent;
    -webkit-text-fill-color: transparent;
}
.hero-lead {
    margin-top: 22px; max-width: 520px;
    font-size: clamp(15px, 1.3vw, 17px); line-height: 1.78; color: var(--on-sv);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.trust-row {
    display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 26px;
    list-style: none; font-size: 12.5px; font-weight: 800; color: var(--on-sv);
}
.trust-row li { display: inline-flex; align-items: center; gap: 6px; }
.trust-row .icon { color: var(--primary); }

.setup-card {
    margin-top: 26px; padding: 16px 18px;
    border: 1px dashed color-mix(in srgb, var(--primary) 45%, var(--outline-v));
    border-radius: 16px;
    background: color-mix(in srgb, var(--primary-container) 28%, var(--surface-cl));
    font-size: 12.5px; color: var(--on-sv);
}
.setup-card-head {
    display: flex; align-items: center; gap: 8px; margin-bottom: 7px;
    color: var(--on-surface); font-size: 13px;
}
.setup-card-head .icon { color: var(--primary); }
.setup-card p { line-height: 1.65; }
.setup-card code {
    font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 11.5px;
    padding: 2px 6px; border-radius: 6px; background: var(--surface-c); color: var(--on-surface);
}
.setup-uri { display: block; margin-top: 9px; word-break: break-all; }
.demo-card {
    display: flex; flex-wrap: wrap; align-items: center; gap: 10px;
    margin-top: 14px; padding: 12px 16px; border-radius: 14px;
    border: 1px solid var(--outline-v); background: var(--surface-cl);
}
.demo-label { font-size: 12px; font-weight: 800; color: var(--outline); }
.demo-buttons { display: flex; gap: 8px; flex-wrap: wrap; }
.demo-buttons .btn { min-height: 34px; padding: 0 12px; font-size: 12.5px; border-radius: 10px; }

/* --------------------------------------------------------------------------
   Hero visual — mock chat window
   -------------------------------------------------------------------------- */
.hero-visual {
    position: relative; min-height: 520px;
    display: grid; place-items: center;
    padding: 24px 8px;
}
.orbit {
    position: absolute; border-radius: 50%;
    border: 1px dashed color-mix(in srgb, var(--primary) 32%, transparent);
    pointer-events: none;
}
.orbit-a { width: min(560px, 96%); aspect-ratio: 1; transform: rotate(18deg); }
.orbit-b { width: min(700px, 118%); aspect-ratio: 1; border-color: color-mix(in srgb, var(--outline) 22%, transparent); }

.mock-window {
    position: relative; z-index: 2;
    width: min(470px, 100%);
    background: var(--surface-cl);
    border: 1px solid var(--outline-v);
    border-radius: 26px;
    box-shadow: var(--shadow-lg), 0 0 0 8px color-mix(in srgb, var(--surface-cl) 35%, transparent);
    overflow: hidden;
    transform: rotate(-1.4deg);
    transition: transform .5s cubic-bezier(.2, .8, .2, 1);
}
.mock-window:hover { transform: rotate(0deg) translateY(-3px); }
.mock-chrome {
    display: flex; align-items: center; gap: 10px;
    height: 42px; padding: 0 16px;
    background: var(--surface-clo); border-bottom: 1px solid var(--outline-v);
    font-size: 11px; font-weight: 800; color: var(--outline);
}
.mock-dots { display: inline-flex; gap: 5px; }
.mock-dots i { width: 8px; height: 8px; border-radius: 50%; background: var(--outline-v); }
.mock-dots i:first-child { background: color-mix(in srgb, var(--primary) 70%, var(--outline-v)); }
.mock-title { letter-spacing: .02em; }
.mock-live {
    display: inline-flex; align-items: center; gap: 6px; margin-left: auto;
    padding: 3px 9px; border-radius: 999px;
    background: color-mix(in srgb, var(--primary) 12%, transparent);
    color: var(--success); font-size: 10px; font-weight: 900;
}
.mock-live .live-dot { width: 5px; height: 5px; }
.mock-head {
    display: flex; align-items: center; gap: 10px;
    padding: 13px 16px; border-bottom: 1px solid var(--outline-v);
    background: var(--surface-cl);
}
.mock-avatar {
    width: 36px; height: 36px; border-radius: 50%; flex: none;
    display: inline-grid; place-items: center;
    color: #fff; font-size: 14px; font-weight: 900;
    background: radial-gradient(circle at 30% 25%, rgba(255,255,255,.35), transparent 55%), #7E57C2;
}
.mock-avatar-b { width: 27px; height: 27px; font-size: 11px; background: radial-gradient(circle at 30% 25%, rgba(255,255,255,.35), transparent 55%), #EC407A; }
.mock-peer { display: flex; flex-direction: column; line-height: 1.35; min-width: 0; }
.mock-peer strong { font-size: 13px; font-weight: 900; }
.mock-peer small { font-size: 10.5px; color: var(--success); font-weight: 700; }
.mock-head-icons { margin-left: auto; display: flex; gap: 8px; color: var(--outline); }
.mock-thread {
    display: flex; flex-direction: column; gap: 9px;
    padding: 16px; min-height: 298px;
    background:
        radial-gradient(circle at 15% 0%, color-mix(in srgb, var(--primary) 6%, transparent), transparent 45%),
        var(--surface);
}
.mock-day { align-self: center; font-size: 10px; font-weight: 800; color: var(--outline); }
.mock-row { display: flex; align-items: flex-end; gap: 8px; }
.mock-row.self { justify-content: flex-end; }
.mock-bubble {
    max-width: 78%; padding: 9px 13px;
    border-radius: 15px; border-bottom-left-radius: 5px;
    background: var(--surface-cl); color: var(--on-surface);
    border: 1px solid var(--outline-v);
    font-size: 12px; line-height: 1.6;
    box-shadow: 0 1px 2px rgba(25, 29, 25, .03);
}
.mock-row.self .mock-bubble {
    background: var(--primary); color: var(--on-primary);
    border-color: transparent; border-bottom-left-radius: 15px;
    border-bottom-right-radius: 5px;
}
.mock-read {
    display: inline-flex; align-items: center; gap: 3px;
    margin-left: 6px; font-size: 9px; font-weight: 800; opacity: .72;
    vertical-align: 1px;
}
.mock-read .icon { width: 11px; height: 11px; }
.mock-typing {
    display: inline-flex; align-items: center; gap: 4px;
    width: fit-content; margin-left: 35px;
    padding: 10px 13px; border-radius: 15px; border-bottom-left-radius: 5px;
    background: var(--surface-cl); border: 1px solid var(--outline-v);
}
.mock-typing i, .typing-pill i {
    width: 5px; height: 5px; border-radius: 50%; background: var(--outline);
    animation: typing-bounce 1.3s ease-in-out infinite;
}
.mock-typing i:nth-child(2), .typing-pill i:nth-child(2) { animation-delay: .16s; }
.mock-typing i:nth-child(3), .typing-pill i:nth-child(3) { animation-delay: .32s; }
@keyframes typing-bounce {
    0%, 60%, 100% { transform: translateY(0); opacity: .55; }
    30% { transform: translateY(-4px); opacity: 1; }
}
.mock-composer {
    display: flex; align-items: center; gap: 10px;
    padding: 11px 14px; border-top: 1px solid var(--outline-v);
    background: var(--surface-cl);
}
.mock-composer > span:first-child {
    flex: 1; padding: 9px 15px; border-radius: 999px;
    background: var(--surface-ch); color: var(--outline);
    font-size: 11.5px; font-weight: 600;
}
.mock-send {
    display: grid; place-items: center; width: 34px; height: 34px; flex: none;
    border-radius: 50%; background: var(--primary); color: var(--on-primary);
}
.mock-send .icon { width: 16px; height: 16px; }

.float-chip {
    position: absolute; z-index: 3;
    display: flex; align-items: center; gap: 10px;
    padding: 10px 14px; border-radius: 16px;
    background: var(--surface-cl); border: 1px solid var(--outline-v);
    box-shadow: var(--shadow-md);
    animation: floaty 7s ease-in-out infinite;
}
.float-chip .icon { width: 20px; height: 20px; color: var(--primary); }
.float-chip span { display: flex; flex-direction: column; line-height: 1.35; }
.float-chip strong { font-size: 11.5px; font-weight: 900; }
.float-chip small { font-size: 10px; color: var(--outline); font-weight: 700; }
.float-account { left: 4px; bottom: -30px; }
.float-realtime { right: 4px; bottom: -30px; animation-delay: -3.2s; }
@keyframes floaty { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

/* --------------------------------------------------------------------------
   Sections
   -------------------------------------------------------------------------- */
.feature-section, .platform-section, .privacy-section { position: relative; z-index: 1; padding: clamp(56px, 7vw, 96px) 0; }
.section-head { max-width: 660px; margin-bottom: 38px; }
.section-head h2, .platform-copy h2, .privacy-copy h2 {
    margin-top: 12px; font-size: clamp(28px, 3.4vw, 42px);
    line-height: 1.14; letter-spacing: -.03em; font-weight: 900;
}
.section-head p, .platform-copy p, .privacy-copy p {
    margin-top: 14px; font-size: 14.5px; line-height: 1.75; color: var(--on-sv);
}

.feature-grid {
    display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}
.feature-card {
    position: relative;
    padding: 26px;
    border: 1px solid var(--outline-v); border-radius: 20px;
    background: var(--surface-cl);
    transition: transform .2s, box-shadow .2s, border-color .2s;
}
.feature-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: color-mix(in srgb, var(--primary) 40%, var(--outline-v)); }
.feature-wide {
    grid-column: 1 / -1;
    display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: clamp(20px, 3vw, 40px); align-items: center;
}
.feature-wide-copy { min-width: 0; }
.feature-icon {
    display: grid; place-items: center; width: 44px; height: 44px;
    border-radius: 13px; background: var(--primary-container); color: var(--on-primary-container);
}
.feature-card h3 { margin: 16px 0 8px; font-size: 17px; font-weight: 900; letter-spacing: -.01em; }
.feature-card p { font-size: 13.5px; line-height: 1.72; color: var(--on-sv); }
.feature-demo { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }

/* A small, static conversation used to fill the wide feature card. */
.feature-wide-visual {
    position: relative; padding: 16px;
    border-radius: 18px; border: 1px solid var(--outline-v);
    background:
        radial-gradient(circle at 100% 0%, color-mix(in srgb, var(--primary) 10%, transparent), transparent 55%),
        var(--surface);
}
.mini-thread { display: flex; flex-direction: column; gap: 7px; }
.mini-bubble {
    max-width: 82%; padding: 8px 12px;
    border-radius: 13px; border-bottom-left-radius: 4px;
    background: var(--surface-cl); border: 1px solid var(--outline-v);
    font-size: 11.5px; line-height: 1.55;
}
.mini-bubble.self {
    align-self: flex-end;
    background: var(--primary); color: var(--on-primary);
    border-color: transparent; border-bottom-left-radius: 13px; border-bottom-right-radius: 4px;
}
.mini-typing {
    display: inline-flex; align-items: center; gap: 4px; align-self: flex-start;
    padding: 9px 12px; border-radius: 13px; border-bottom-left-radius: 4px;
    background: var(--surface-cl); border: 1px solid var(--outline-v);
}
.mini-typing i { width: 4px; height: 4px; border-radius: 50%; background: var(--outline); animation: typing-bounce 1.3s ease-in-out infinite; }
.mini-typing i:nth-child(2) { animation-delay: .16s; }
.mini-typing i:nth-child(3) { animation-delay: .32s; }
.mini-meta {
    display: flex; align-items: center; gap: 5px; justify-content: flex-end;
    padding-right: 4px; font-size: 9.5px; font-weight: 800; color: var(--outline);
}
.mini-meta .icon { width: 11px; height: 11px; color: var(--primary); }
.demo-pill {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 6px 11px; border-radius: 999px;
    border: 1px solid var(--outline-v); background: var(--surface-clo);
    font-size: 11.5px; font-weight: 800; color: var(--on-sv);
}
.demo-pill .icon { width: 14px; height: 14px; }
.read-pill .icon { color: var(--primary); }
.typing-pill i { width: 4px; height: 4px; }

/* Platforms */
.platform-card {
    display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: clamp(24px, 4vw, 56px); align-items: center;
    padding: clamp(26px, 4vw, 44px);
    border-radius: 26px; border: 1px solid var(--outline-v);
    background:
        radial-gradient(ellipse 70% 90% at 0% 0%, color-mix(in srgb, var(--primary-container) 55%, transparent), transparent 60%),
        var(--surface-cl);
}
.platform-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.platform-mobile-break { display: none; }
.platform-list li {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 16px; border-radius: 14px;
    border: 1px solid var(--outline-v); background: var(--surface-cl);
    font-size: 13.5px; font-weight: 800;
}
.platform-list li .icon { color: var(--outline); }
.platform-list li span { flex: 1; }
.platform-list li em { font-style: normal; font-size: 11px; font-weight: 800; color: var(--outline); }
.platform-list li.available { border-color: color-mix(in srgb, var(--primary) 50%, var(--outline-v)); background: color-mix(in srgb, var(--primary-container) 30%, var(--surface-cl)); }
.platform-list li.available .icon, .platform-list li.available em { color: var(--success); }

/* Privacy */
.privacy-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(24px, 5vw, 72px); align-items: center; }
.privacy-copy code {
    font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
    font-size: 12.5px; padding: 2px 6px; border-radius: 6px;
    background: var(--surface-c);
}
.text-link {
    display: inline-flex; align-items: center; gap: 6px; margin-top: 18px;
    font-size: 13px; font-weight: 800; color: var(--primary);
}
.text-link:hover { text-decoration: underline; text-underline-offset: 3px; }
.privacy-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.privacy-list li {
    display: flex; gap: 14px; align-items: flex-start;
    padding: 16px 18px; border-radius: 16px;
    border: 1px solid var(--outline-v); background: var(--surface-cl);
}
.privacy-list .icon { color: var(--primary); margin-top: 1px; }
.privacy-list div { display: flex; flex-direction: column; gap: 2px; }
.privacy-list strong { font-size: 13.5px; font-weight: 900; }
.privacy-list span { font-size: 12.5px; color: var(--on-sv); line-height: 1.55; }

/* CTA */
.cta-section { position: relative; z-index: 1; padding: clamp(40px, 6vw, 72px) 0 clamp(64px, 8vw, 104px); }
.cta-card {
    position: relative; overflow: hidden;
    display: flex; flex-direction: column; align-items: center;
    padding: clamp(44px, 6vw, 72px) 24px;
    border-radius: 28px; text-align: center;
    background: linear-gradient(135deg, #16381B 0%, #2E7D32 48%, #00796B 100%);
    color: #fff;
    box-shadow: var(--shadow-lg);
}
.cta-glow {
    position: absolute; width: 520px; height: 520px; top: -320px; right: -120px;
    border-radius: 50%; background: radial-gradient(circle, rgba(120, 224, 123, .55), transparent 68%);
    pointer-events: none;
}
.cta-card h2 { position: relative; font-size: clamp(30px, 4vw, 46px); line-height: 1.12; letter-spacing: -.03em; font-weight: 900; }
.cta-card p { position: relative; margin-top: 14px; font-size: 14.5px; opacity: .82; }
.cta-actions { position: relative; display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 28px; }
.cta-card .btn-primary { background: #fff; color: #1B5E20; box-shadow: 0 10px 30px -12px rgba(0, 0, 0, .5); }
.cta-card .btn-primary:hover { background: #F1F6F1; }
.cta-card .btn-ghost { border-color: rgba(255, 255, 255, .35); background: rgba(255, 255, 255, .08); color: #fff; }
.cta-card .btn-ghost:hover { background: rgba(255, 255, 255, .16); }

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer { position: relative; z-index: 1; border-top: 1px solid var(--outline-v); background: var(--surface-clo); }
.footer-inner {
    display: flex; flex-wrap: wrap; align-items: center; gap: 18px 36px;
    padding: 34px 0 40px;
}
.footer-brand p { margin-top: 8px; font-size: 11.5px; color: var(--outline); font-weight: 700; }
.footer-links { display: flex; flex-wrap: wrap; gap: 6px 22px; margin-left: auto; }
.footer-links a { color: var(--on-sv); font-size: 12.5px; font-weight: 800; }
.footer-links a:hover { color: var(--primary); }
.footer-copy { flex-basis: 100%; font-size: 11.5px; color: var(--outline); font-weight: 700; }

/* --------------------------------------------------------------------------
   Auth error page
   -------------------------------------------------------------------------- */
.auth-page { min-height: 100dvh; background: var(--surface); }
.auth-shell {
    min-height: 100dvh; display: flex; flex-direction: column;
    width: min(520px, calc(100% - 32px)); margin-inline: auto; padding: 22px 0 48px;
}
.auth-top { display: flex; align-items: center; justify-content: space-between; }
.auth-card {
    flex: 1; display: flex; flex-direction: column; justify-content: center; align-items: center;
    text-align: center; padding: 32px 0;
}
.auth-icon {
    display: grid; place-items: center; width: 64px; height: 64px;
    border-radius: 20px; background: var(--danger-container); color: var(--danger);
}
.auth-icon-brand { background: var(--primary-container); color: var(--on-primary-container); }
.error-code {
    display: block; margin-top: 16px;
    font-size: 12px; font-weight: 900; letter-spacing: .22em;
    color: var(--primary);
}
.error-code + h1 { margin-top: 6px; }
.auth-card h1 { margin-top: 20px; font-size: 27px; font-weight: 900; letter-spacing: -.02em; }
.auth-card > p { margin-top: 12px; max-width: 420px; font-size: 14px; line-height: 1.7; color: var(--on-sv); }
.auth-detail {
    margin-top: 16px; max-width: 100%; padding: 12px 14px; border-radius: 12px;
    background: var(--surface-clo); border: 1px solid var(--outline-v);
    font-size: 11.5px; color: var(--outline); text-align: left; white-space: pre-wrap;
    overflow-wrap: anywhere;
}
.auth-actions { display: flex; gap: 10px; margin-top: 26px; flex-wrap: wrap; justify-content: center; }
.auth-foot { margin-top: 26px; font-size: 11.5px; color: var(--outline); }
.auth-foot a { font-weight: 800; }

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1023px) {
    .hero { grid-template-columns: 1fr; gap: 36px; }
    .hero-copy { max-width: 680px; }
    .hero-visual { min-height: 0; padding-top: 8px; }
    .orbit { display: none; }
    .mock-window { transform: none; }
    .float-chip { display: none; }
    .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .feature-wide { grid-column: 1 / -1; }
    .platform-card, .privacy-grid { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
    .site-nav { display: none; }
    .header-inner { height: 66px; gap: 14px; }
}
@media (max-width: 720px) {
    .shell { width: calc(100% - 32px); }
    .header-login span { display: none; }
    .header-login { min-width: 44px; padding: 0 12px; }
    .hero { padding-top: 36px; }
    .hero h1 { font-size: clamp(38px, 11vw, 50px); }
    .hero-actions .btn-lg { width: 100%; }
    .trust-row { gap: 8px 16px; }
    .platform-copy h2 { font-size: 26px; }
    .platform-mobile-break { display: inline; }
    .platform-list li { padding: 11px 14px; }
    .feature-grid { grid-template-columns: 1fr; }
    .feature-wide { grid-template-columns: 1fr; }
    .feature-wide-visual { display: none; }
    .float-chip { display: none; }
    .hero-visual { padding-inline: 0; }
    .mock-window { border-radius: 22px; }
    .mock-thread { min-height: 0; }
    .footer-inner { flex-direction: column; align-items: flex-start; gap: 16px; }
    .footer-links { margin-left: 0; }
    .footer-copy { flex-basis: auto; }
    .auth-card h1 { font-size: 23px; }
}
@media (max-width: 420px) {
    .mock-bubble { font-size: 11.5px; }
    .mock-peer small { font-size: 10px; }
    .cta-card { border-radius: 22px; }
}

@media (prefers-color-scheme: dark) {
    html:not([data-theme]) .aurora-blob { opacity: .28; }
}
html[data-theme="dark"] .aurora-blob { opacity: .28; }