:root {
    color-scheme: light;
    --bg: #f5f7fc;
    --bg-2: #eef2fb;
    --ink: #0b1424;
    --muted: #5a6a83;
    --muted-2: #7b8aa1;
    --line: rgba(15, 23, 42, 0.08);
    --line-strong: rgba(15, 23, 42, 0.14);
    --glass: rgba(255, 255, 255, 0.6);
    --glass-strong: rgba(255, 255, 255, 0.78);
    --glass-border: rgba(255, 255, 255, 0.8);
    --glass-hover: rgba(255, 255, 255, 0.9);
    --shadow: 0 26px 70px rgba(20, 40, 80, 0.13);
    --shadow-soft: 0 12px 34px rgba(20, 40, 80, 0.08);
    --blue: #2463eb;
    --blue-ink: #194fc2;
    --purple: #7657f6;
    --teal: #14b8a6;
    --gradient: linear-gradient(135deg, #2463eb 0%, #7657f6 55%, #a45cff 100%);
    --radius: 24px;
    --font: "Inter", "SF Pro Display", "Segoe UI", system-ui, -apple-system, sans-serif;
}

html[data-theme="dark"] {
    color-scheme: dark;
    --bg: #070b14;
    --bg-2: #0b1220;
    --ink: #eaf0ff;
    --muted: #a7b4cc;
    --muted-2: #7e8cab;
    --line: rgba(255, 255, 255, 0.08);
    --line-strong: rgba(255, 255, 255, 0.14);
    --glass: rgba(15, 23, 42, 0.55);
    --glass-strong: rgba(15, 23, 42, 0.72);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-hover: rgba(30, 41, 64, 0.8);
    --shadow: 0 26px 70px rgba(0, 0, 0, 0.45);
    --shadow-soft: 0 12px 34px rgba(0, 0, 0, 0.35);
    --blue: #77a7ff;
    --blue-ink: #b6d0ff;
    --purple: #a98cff;
    --teal: #5eead4;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 110px;
}

body {
    margin: 0;
    min-height: 100vh;
    background: var(--bg);
    color: var(--ink);
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font: inherit;
    cursor: pointer;
}

img {
    display: block;
    max-width: 100%;
}

h1,
h2,
h3,
h4,
p {
    margin: 0;
}

::selection {
    color: #fff;
    background: var(--purple);
}

:is(a, button, summary, input):focus-visible {
    outline: 3px solid var(--blue);
    outline-offset: 3px;
}

.skip-link {
    position: fixed;
    top: 8px;
    left: 8px;
    z-index: 300;
    padding: 10px 14px;
    border-radius: 10px;
    background: var(--ink);
    color: var(--bg);
    transform: translateY(-160%);
    transition: transform 0.2s ease;
}

.skip-link:focus {
    transform: translateY(0);
}

/* ---------------------------------------------------------------- aurora */

.aurora {
    position: fixed;
    inset: 0;
    z-index: -2;
    overflow: hidden;
    pointer-events: none;
    background:
        radial-gradient(1200px 800px at 80% -10%, rgba(122, 162, 255, 0.28), transparent 60%),
        radial-gradient(900px 700px at -10% 30%, rgba(167, 139, 250, 0.22), transparent 60%),
        linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.55;
    will-change: transform;
}

.orb-a {
    width: 560px;
    height: 560px;
    top: -160px;
    left: -120px;
    background: #7aa2ff;
    animation: drift-a 24s ease-in-out infinite;
}

.orb-b {
    width: 480px;
    height: 480px;
    top: 40px;
    right: -140px;
    background: #a78bfa;
    animation: drift-b 28s ease-in-out infinite;
}

.orb-c {
    width: 420px;
    height: 420px;
    bottom: -180px;
    left: 30%;
    background: #6ee7d8;
    opacity: 0.35;
    animation: drift-a 32s ease-in-out infinite reverse;
}

.orb-d {
    width: 320px;
    height: 320px;
    bottom: 20%;
    right: 12%;
    background: #f0abfc;
    opacity: 0.22;
    animation: drift-b 26s ease-in-out infinite reverse;
}

html[data-theme="dark"] .orb {
    opacity: 0.32;
}

html[data-theme="dark"] .aurora {
    background:
        radial-gradient(1200px 800px at 80% -10%, rgba(64, 96, 200, 0.35), transparent 60%),
        radial-gradient(900px 700px at -10% 30%, rgba(110, 70, 210, 0.28), transparent 60%),
        linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
}

@keyframes drift-a {
    0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
    50% { transform: translate3d(40px, 30px, 0) scale(1.08); }
}

@keyframes drift-b {
    0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
    50% { transform: translate3d(-40px, 40px, 0) scale(1.06); }
}

/* ----------------------------------------------------------------- glass */

.glass {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    -webkit-backdrop-filter: blur(22px) saturate(180%);
    backdrop-filter: blur(22px) saturate(180%);
    box-shadow: var(--shadow-soft);
}

.glass-strong {
    background: var(--glass-strong);
    border: 1px solid var(--glass-border);
    -webkit-backdrop-filter: blur(30px) saturate(180%);
    backdrop-filter: blur(30px) saturate(180%);
    box-shadow: var(--shadow);
}

/* ---------------------------------------------------------------- header */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 14px 20px 0;
}

.header-inner {
    display: flex;
    align-items: center;
    gap: 26px;
    max-width: 1180px;
    margin: 0 auto;
    padding: 9px 12px 9px 16px;
    border-radius: 20px;
    transition: box-shadow 0.25s ease, background 0.25s ease;
}

.site-header.scrolled .header-inner {
    box-shadow: var(--shadow);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

.brand-mark {
    height: 38px;
    width: auto;
    filter: drop-shadow(0 6px 14px rgba(36, 99, 235, 0.22));
}

.brand-word {
    font-size: 19px;
    font-weight: 750;
    letter-spacing: -0.035em;
    color: var(--ink);
    white-space: nowrap;
}

.brand-dot {
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 26px;
    margin-left: 8px;
}

.nav-links a {
    font-size: 13.5px;
    font-weight: 500;
    color: var(--muted);
    transition: color 0.15s ease;
}

.nav-links a:hover {
    color: var(--ink);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

.icon-btn {
    display: inline-grid;
    place-items: center;
    width: 38px;
    height: 38px;
    padding: 0;
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    background: transparent;
    color: var(--muted);
    transition: background 0.15s ease, color 0.15s ease;
}

.icon-btn:hover {
    background: var(--glass-hover);
    color: var(--ink);
}

.icon-btn svg {
    width: 18px;
    height: 18px;
}

html[data-theme="light"] .icon-sun,
html[data-theme="dark"] .icon-moon {
    display: none;
}

.menu-toggle {
    display: none;
}

.menu-bars {
    display: grid;
    gap: 4px;
    width: 16px;
}

.menu-bars span {
    display: block;
    height: 1.6px;
    border-radius: 2px;
    background: currentColor;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.menu-toggle[aria-expanded="true"] .menu-bars span:nth-child(1) {
    transform: translateY(5.6px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-bars span:nth-child(2) {
    opacity: 0;
}

.menu-toggle[aria-expanded="true"] .menu-bars span:nth-child(3) {
    transform: translateY(-5.6px) rotate(-45deg);
}

.mobile-menu {
    display: none;
    max-width: 1180px;
    margin: 8px auto 0;
    padding: 12px;
    border-radius: 18px;
    grid-template-columns: 1fr;
    gap: 4px;
}

.mobile-menu a {
    padding: 11px 12px;
    border-radius: 10px;
    color: var(--muted);
    font-size: 14px;
    font-weight: 500;
}

.mobile-menu a:hover {
    background: var(--glass-hover);
    color: var(--ink);
}

.mobile-menu .btn {
    margin-top: 6px;
    justify-content: center;
}

.mobile-menu .mobile-signin {
    border-top: 1px solid var(--line);
    border-radius: 0;
    margin-top: 4px;
    padding-top: 15px;
}

/* ---------------------------------------------------------------- buttons */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 42px;
    padding: 0 16px;
    border: 1px solid transparent;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 650;
    letter-spacing: -0.01em;
    white-space: nowrap;
    transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.btn svg {
    width: 17px;
    height: 17px;
    transition: transform 0.18s ease;
}

.btn-primary {
    background: var(--gradient);
    color: #fff;
    box-shadow: 0 12px 26px rgba(76, 92, 246, 0.32);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 16px 34px rgba(76, 92, 246, 0.4);
}

.btn-primary:hover svg {
    transform: translateX(2px);
}

.btn-glass {
    background: var(--glass-strong);
    border-color: var(--glass-border);
    color: var(--ink);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    box-shadow: var(--shadow-soft);
}

.btn-glass:hover {
    background: var(--glass-hover);
    transform: translateY(-1px);
}

.btn-ghost {
    background: transparent;
    color: var(--muted);
}

.btn-ghost:hover {
    color: var(--ink);
    background: var(--glass-hover);
}

.btn-lg {
    height: 52px;
    padding: 0 22px;
    border-radius: 14px;
    font-size: 15px;
}

/* ------------------------------------------------------------------ hero */

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 54px;
    align-items: center;
    max-width: 1180px;
    min-height: calc(100svh - 120px);
    margin: 0 auto;
    padding: 64px 20px 34px;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--muted);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.glass-pill {
    padding: 8px 13px;
    border: 1px solid var(--glass-border);
    border-radius: 999px;
    background: var(--glass);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    color: var(--muted);
    font-size: 11px;
    letter-spacing: 0.08em;
}

.pulse-dot {
    position: relative;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #22c55e;
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.5);
    animation: pulse 2.4s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.45); }
    70% { box-shadow: 0 0 0 8px rgba(34, 197, 94, 0); }
    100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

.hero h1 {
    margin-top: 22px;
    font-size: clamp(42px, 5.3vw, 74px);
    font-weight: 780;
    line-height: 1.02;
    letter-spacing: -0.048em;
}

.gradient {
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.lede {
    max-width: 560px;
    margin-top: 24px;
    color: var(--muted);
    font-size: clamp(15.5px, 1.3vw, 18px);
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 32px;
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 22px;
    margin-top: 26px;
    color: var(--muted-2);
    font-size: 12.5px;
}

.hero-meta span {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.hero-meta span::before {
    content: "";
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--teal);
}

/* --------------------------------------------------------------- preview */

.hero-visual {
    position: relative;
}

.preview-shell {
    position: relative;
    padding: 38px 36px 48px;
}

.preview-glow {
    position: absolute;
    inset: 12% 4% 6%;
    border-radius: 40px;
    background: linear-gradient(135deg, rgba(36, 99, 235, 0.45), rgba(164, 92, 255, 0.4));
    filter: blur(60px);
    opacity: 0.55;
    z-index: 0;
}

.preview-window {
    position: relative;
    z-index: 1;
    padding: 13px;
    border-radius: 26px;
    overflow: hidden;
}

.preview-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 2px 4px 12px;
    color: var(--muted);
    font-size: 10.5px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.window-dots {
    display: inline-flex;
    gap: 5px;
}

.window-dots i {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--line-strong);
}

.window-dots i:first-child { background: #ff8a8a; }
.window-dots i:nth-child(2) { background: #ffd166; }
.window-dots i:nth-child(3) { background: #6ee7b7; }

.preview-room {
    margin-left: 4px;
}

.live-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-left: auto;
    padding: 4px 9px;
    border: 1px solid rgba(34, 197, 94, 0.3);
    border-radius: 999px;
    background: rgba(34, 197, 94, 0.1);
    color: #16a34a;
    font-size: 9.5px;
    font-weight: 700;
    letter-spacing: 0.1em;
}

html[data-theme="dark"] .live-pill { color: #6ee7b7; }

.preview-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
}

.preview-tile {
    position: relative;
    display: grid;
    place-items: center;
    aspect-ratio: 1 / 1;
    border-radius: 16px;
    overflow: hidden;
    background: #1b2440;
}

.tile-a { background: linear-gradient(150deg, #1e3a8a, #6d7ff5 65%, #93a5ff); }
.tile-b { background: linear-gradient(150deg, #3b2a6e, #8b5cf6 70%, #c4a8ff); }
.tile-c { background: linear-gradient(150deg, #0f3a3a, #14b8a6 70%, #6ee7d8); }

.tile-glow {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 120%, rgba(255, 255, 255, 0.35), transparent 60%);
}

.avatar {
    position: relative;
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.16);
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.02em;
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
}

.preview-tile.speaking {
    box-shadow: 0 0 0 2px #6ee7b7, 0 0 28px rgba(52, 211, 153, 0.45);
}

.tile-name {
    position: absolute;
    left: 9px;
    bottom: 8px;
    color: #fff;
    font-size: 10.5px;
    font-weight: 600;
    text-shadow: 0 1px 8px rgba(0, 0, 0, 0.4);
}

.tile-lang {
    position: absolute;
    top: 8px;
    left: 8px;
    padding: 2px 6px;
    border-radius: 5px;
    background: rgba(7, 11, 20, 0.35);
    color: #fff;
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.tile-wave {
    position: absolute;
    right: 8px;
    bottom: 9px;
    display: flex;
    align-items: flex-end;
    gap: 2px;
    height: 12px;
}

.tile-wave i {
    width: 2.5px;
    height: 30%;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.85);
    animation: wave 1.2s ease-in-out infinite;
}

.tile-wave i:nth-child(2) { animation-delay: 0.15s; height: 55%; }
.tile-wave i:nth-child(3) { animation-delay: 0.3s; height: 80%; }
.tile-wave i:nth-child(4) { animation-delay: 0.45s; height: 45%; }
.tile-wave i:nth-child(5) { animation-delay: 0.6s; height: 65%; }

@keyframes wave {
    0%, 100% { transform: scaleY(0.5); }
    50% { transform: scaleY(1); }
}

.preview-captions {
    display: grid;
    gap: 6px;
    margin-top: 9px;
}

.caption-line {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 11px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--glass);
    color: var(--ink);
    font-size: 11.5px;
}

.caption-line.translated {
    border-color: rgba(118, 87, 246, 0.25);
    background: linear-gradient(135deg, rgba(36, 99, 235, 0.08), rgba(164, 92, 255, 0.1));
}

.caption-tag {
    flex: 0 0 auto;
    color: var(--muted-2);
    font-size: 8.5px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.caption-line.translated .caption-tag {
    color: var(--purple);
}

.float-chip {
    position: absolute;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 9px 13px;
    border-radius: 999px;
    color: var(--ink);
    font-size: 11.5px;
    font-weight: 600;
    white-space: nowrap;
}

.float-chip svg {
    width: 15px;
    height: 15px;
    color: var(--purple);
}

.chip-langs {
    top: 2px;
    right: 18px;
    animation: bob 7s ease-in-out infinite;
}

.chip-gpu {
    bottom: 2px;
    left: 18px;
    animation: bob 8s ease-in-out infinite reverse;
}

.chip-secure {
    top: 2px;
    left: 18px;
    animation: bob 9s ease-in-out infinite;
}

@keyframes bob {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

/* ----------------------------------------------------------------- proof */

.proof {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 10px 30px;
    max-width: 1180px;
    margin: 6px auto 0;
    padding: 15px 24px;
    border-radius: 16px;
    color: var(--muted);
    font-size: 12px;
    font-weight: 600;
}

.proof-label {
    color: var(--muted-2);
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.proof span:not(.proof-label) {
    opacity: 0.8;
}

/* -------------------------------------------------------------- sections */

.section {
    max-width: 1180px;
    margin: 0 auto;
    padding: 88px 20px 0;
}

.section-head {
    max-width: 660px;
    margin: 0 auto 32px;
    text-align: center;
}

.section-head h2,
.security-copy h2,
.cta-band h2 {
    margin-top: 12px;
    font-size: clamp(30px, 3.5vw, 46px);
    font-weight: 760;
    line-height: 1.08;
    letter-spacing: -0.04em;
}

.section-head p {
    margin-top: 14px;
    color: var(--muted);
    font-size: 15.5px;
    line-height: 1.7;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.feature-card {
    padding: 26px;
    border-radius: 22px;
    transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: var(--line-strong);
}

.icon-badge {
    display: grid;
    place-items: center;
    width: 46px;
    height: 46px;
    border: 1px solid var(--glass-border);
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(36, 99, 235, 0.12), rgba(164, 92, 255, 0.14));
    color: var(--purple);
}

.icon-badge svg {
    width: 22px;
    height: 22px;
}

.feature-card h3 {
    margin-top: 18px;
    font-size: 17px;
    font-weight: 680;
    letter-spacing: -0.02em;
}

.feature-card p {
    margin-top: 9px;
    color: var(--muted);
    font-size: 13.5px;
    line-height: 1.65;
}

/* ----------------------------------------------------------------- steps */

.steps {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.step-card {
    position: relative;
    padding: 28px;
    border-radius: 22px;
    overflow: hidden;
}

.step-num {
    display: block;
    font-size: 34px;
    font-weight: 800;
    letter-spacing: -0.05em;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.step-card h3 {
    margin-top: 12px;
    font-size: 17px;
    font-weight: 680;
}

.step-card p {
    margin-top: 8px;
    color: var(--muted);
    font-size: 13.5px;
    line-height: 1.65;
}

/* -------------------------------------------------------------- security */

.security-card {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 40px;
    align-items: center;
    padding: 42px;
    border-radius: 30px;
    background:
        radial-gradient(700px 320px at 100% 0%, rgba(164, 92, 255, 0.14), transparent 60%),
        var(--glass-strong);
}

.security-copy p {
    max-width: 520px;
    margin-top: 14px;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.7;
}

.check-list {
    display: grid;
    gap: 11px;
    margin: 24px 0 28px;
    padding: 0;
    list-style: none;
}

.check-list li {
    position: relative;
    padding-left: 30px;
    color: var(--ink);
    font-size: 14px;
}

.check-list li::before {
    content: "";
    position: absolute;
    top: 1px;
    left: 0;
    width: 19px;
    height: 19px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(36, 99, 235, 0.15), rgba(20, 184, 166, 0.18));
    border: 1px solid rgba(20, 184, 166, 0.3);
}

.check-list li::after {
    content: "";
    position: absolute;
    top: 5px;
    left: 6px;
    width: 6px;
    height: 3px;
    border-left: 1.6px solid var(--teal);
    border-bottom: 1.6px solid var(--teal);
    transform: rotate(-45deg);
}

.security-visual {
    position: relative;
    display: grid;
    place-items: center;
    min-height: 260px;
}

.lock-card {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 14px;
    width: min(100%, 340px);
    padding: 18px;
    border-radius: 18px;
}

.lock-icon {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    flex: 0 0 auto;
    border-radius: 13px;
    background: linear-gradient(135deg, rgba(36, 99, 235, 0.15), rgba(164, 92, 255, 0.16));
    color: var(--purple);
}

.lock-icon svg {
    width: 22px;
    height: 22px;
}

.lock-card strong {
    display: block;
    font-size: 13.5px;
    font-weight: 650;
}

.lock-card span:not(.lock-icon):not(.lock-state) {
    display: block;
    margin-top: 2px;
    color: var(--muted-2);
    font-size: 11.5px;
}

.lock-state {
    margin-left: auto;
    padding: 3px 8px;
    border-radius: 6px;
    background: rgba(20, 184, 166, 0.14);
    color: var(--teal);
    font-size: 9.5px;
    font-weight: 800;
    letter-spacing: 0.08em;
}

.security-rings {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
}

.security-rings span {
    position: absolute;
    border: 1px solid var(--line-strong);
    border-radius: 50%;
    animation: ring 7s ease-in-out infinite;
}

.security-rings span:nth-child(1) { width: 180px; height: 180px; opacity: 0.5; }
.security-rings span:nth-child(2) { width: 260px; height: 260px; opacity: 0.3; animation-delay: 0.8s; }
.security-rings span:nth-child(3) { width: 340px; height: 340px; opacity: 0.16; animation-delay: 1.6s; }

@keyframes ring {
    0%, 100% { transform: scale(0.96); }
    50% { transform: scale(1.04); }
}

/* -------------------------------------------------------------- cta band */

.cta-band {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    padding: 40px;
    border-radius: 30px;
    background:
        radial-gradient(600px 280px at 8% 0%, rgba(36, 99, 235, 0.14), transparent 60%),
        radial-gradient(600px 320px at 92% 100%, rgba(164, 92, 255, 0.16), transparent 60%),
        var(--glass-strong);
}

.cta-band p {
    max-width: 520px;
    margin-top: 12px;
    color: var(--muted);
    font-size: 14.5px;
    line-height: 1.7;
}

.cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

/* ---------------------------------------------------------------- footer */

.site-footer {
    max-width: 1180px;
    margin: 96px auto 0;
    padding: 44px 20px 26px;
    border-top: 1px solid var(--line);
}

.footer-inner {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: 48px;
}

.footer-brand p {
    max-width: 330px;
    margin-top: 14px;
    color: var(--muted);
    font-size: 13.5px;
    line-height: 1.65;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

.footer-links h4 {
    margin-bottom: 12px;
    color: var(--muted-2);
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.footer-links a {
    display: block;
    padding: 4px 0;
    color: var(--muted);
    font-size: 13px;
    transition: color 0.15s ease;
}

.footer-links a:hover {
    color: var(--ink);
}

.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 10px;
    margin-top: 42px;
    padding-top: 18px;
    border-top: 1px solid var(--line);
    color: var(--muted-2);
    font-size: 12px;
}

/* ---------------------------------------------------------------- reveal */

.reveal {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 0.7s cubic-bezier(0.2, 0.7, 0.2, 1), transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.reveal.is-visible {
    opacity: 1;
    transform: none;
}

/* ------------------------------------------------------------- responsive */

@media (max-width: 1080px) {
    .hero {
        grid-template-columns: minmax(0, 1fr);
        min-height: 0;
        gap: 40px;
        padding-top: 44px;
    }

    .hero-visual {
        max-width: 560px;
        margin: 0 auto;
        width: 100%;
    }

    .feature-grid,
    .steps {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .security-card {
        grid-template-columns: minmax(0, 1fr);
        gap: 24px;
    }

    .security-visual {
        min-height: 220px;
    }

    .footer-inner {
        grid-template-columns: minmax(0, 1fr);
        gap: 32px;
    }
}

@media (max-width: 900px) {
    .nav-links,
    .nav-signin {
        display: none;
    }

    .menu-toggle {
        display: inline-grid;
    }

    .mobile-menu:not([hidden]) {
        display: grid;
    }

    .header-inner {
        gap: 12px;
    }
}

@media (max-width: 720px) {
    .site-header {
        padding: 10px 12px 0;
    }

    .header-inner {
        padding: 8px 8px 8px 12px;
        border-radius: 16px;
    }

    .brand-mark {
        height: 32px;
    }

    .brand-word {
        font-size: 17px;
    }

    .header-cta {
        display: none;
    }

    .hero {
        padding: 36px 16px 24px;
    }

    .hero h1 {
        font-size: clamp(36px, 10vw, 48px);
    }

    .lede {
        font-size: 15px;
    }

    .hero-actions {
        gap: 10px;
    }

    .hero-actions .btn {
        flex: 1 1 100%;
    }

    .hero-meta {
        gap: 8px 16px;
        font-size: 12px;
    }

    .proof {
        margin: 10px 16px 0;
    }

    .section {
        padding: 64px 16px 0;
    }

    .feature-grid,
    .steps {
        grid-template-columns: minmax(0, 1fr);
    }

    .security-card,
    .cta-band {
        padding: 26px;
        border-radius: 24px;
    }

    .security-visual {
        display: none;
    }

    .cta-band {
        align-items: flex-start;
    }

    .cta-actions {
        width: 100%;
    }

    .cta-actions .btn {
        flex: 1 1 100%;
    }

    .preview-shell {
        padding: 8px 0;
    }

    .float-chip {
        display: none;
    }

    .site-footer {
        margin-top: 64px;
        padding: 32px 16px 22px;
    }

    .footer-links {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 20px;
    }
}

@media (max-width: 420px) {
    .glass-pill {
        font-size: 10px;
    }

    .caption-line {
        font-size: 10.5px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}