:root {
    --bg-900: #050b12;
    --bg-800: #081321;
    --bg-700: #0c1c2f;
    --card-bg: rgba(12, 27, 45, 0.55);
    --card-border: rgba(125, 201, 255, 0.2);
    --line-soft: rgba(145, 212, 255, 0.15);

    --accent-cyan: #50e6ff;
    --accent-mint: #89ffcd;
    --accent-blue: #78a8ff;
    --accent-strong: #1ac8ff;

    --text-main: #f6fbff;
    --text-muted: #b7cce2;
    --text-dim: #7f98b2;

    --font-display: 'Sora', sans-serif;
    --font-body: 'Space Grotesk', sans-serif;
    --font-mono: 'IBM Plex Mono', monospace;

    --container-width: 1180px;
    --header-height: 80px;
    --radius-xl: 30px;
    --radius-lg: 22px;
    --radius-md: 16px;
    --radius-sm: 12px;

    --shadow-soft: 0 18px 42px rgba(5, 13, 24, 0.45);
    --shadow-glow: 0 0 0 1px rgba(80, 230, 255, 0.35), 0 0 36px rgba(80, 230, 255, 0.28);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    background: var(--bg-900);
}

body {
    min-height: 100vh;
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.65;
    background:
        radial-gradient(1300px 620px at -10% -15%, rgba(120, 168, 255, 0.18), transparent 54%),
        radial-gradient(900px 520px at 108% 6%, rgba(80, 230, 255, 0.14), transparent 58%),
        linear-gradient(160deg, var(--bg-900) 10%, var(--bg-800) 60%, var(--bg-700) 100%);
    overflow-x: hidden;
    position: relative;
}

body::before,
body::after {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
}

body::before {
    background:
        linear-gradient(115deg, rgba(80, 230, 255, 0.08), transparent 28%),
        repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.02) 0 1px, transparent 1px 38px),
        repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.009) 0 1px, transparent 1px 44px);
    mix-blend-mode: screen;
    opacity: 0.5;
}

body::after {
    background: radial-gradient(circle at 72% 82%, rgba(137, 255, 205, 0.08), transparent 38%);
    animation: ambientPulse 10s ease-in-out infinite alternate;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease, transform 0.25s ease;
}

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

h1,
h2,
h3,
h4 {
    line-height: 1.15;
    letter-spacing: -0.03em;
    font-family: var(--font-display);
}

h1 {
    font-size: clamp(2.6rem, 5.5vw, 4.8rem);
}

h2 {
    font-size: clamp(2rem, 4.2vw, 3.2rem);
}

h3 {
    font-size: clamp(1.2rem, 2.1vw, 1.6rem);
}

main,
header,
footer {
    position: relative;
    z-index: 2;
}

.container {
    width: min(92%, var(--container-width));
    margin: 0 auto;
}

.section-pad {
    padding: 5.8rem 0;
}

.text-gradient {
    background: linear-gradient(95deg, #ffffff 8%, var(--accent-cyan) 55%, var(--accent-mint) 96%);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
}

.text-mono {
    font-family: var(--font-mono);
}

.section-kicker {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    padding: 0.45rem 0.85rem;
    border: 1px solid var(--line-soft);
    border-radius: 999px;
    font-size: 0.74rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent-cyan);
    background: rgba(6, 25, 39, 0.66);
    font-family: var(--font-mono);
}

.glass-card {
    background: linear-gradient(135deg, rgba(14, 33, 56, 0.72), rgba(8, 19, 35, 0.46));
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-soft);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 46px;
    padding: 0.75rem 1.3rem;
    border-radius: 13px;
    border: 1px solid transparent;
    font-family: var(--font-display);
    font-size: 0.86rem;
    font-weight: 600;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(100deg, #9ef7ff 0%, var(--accent-cyan) 52%, var(--accent-blue) 100%);
    color: #03253a;
    box-shadow: 0 8px 22px rgba(80, 230, 255, 0.34);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 28px rgba(80, 230, 255, 0.36);
}

.btn-outline {
    border-color: var(--line-soft);
    color: var(--text-main);
    background: rgba(7, 21, 34, 0.35);
}

.btn-outline:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    background: rgba(80, 230, 255, 0.08);
}

.btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    min-height: var(--header-height);
    border-bottom: 1px solid transparent;
    transition: background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
    z-index: 100;
}

.header.is-scrolled {
    background: rgba(6, 16, 30, 0.78);
    border-color: rgba(125, 201, 255, 0.2);
    box-shadow: 0 9px 24px rgba(2, 9, 17, 0.4);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.header-inner {
    min-height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.4rem;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    font-family: var(--font-display);
    font-size: 1.18rem;
    letter-spacing: 0.17em;
    font-weight: 600;
}

.logo img {
    width: 38px;
    height: 38px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-link {
    position: relative;
    color: var(--text-dim);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.nav-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -0.45rem;
    width: 100%;
    height: 1px;
    background: var(--accent-cyan);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.25s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-cyan);
}

.nav-link:hover::after,
.nav-link.active::after {
    transform: scaleX(1);
    transform-origin: left;
}

.lang-switch {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin-left: 0.7rem;
    padding-left: 1.1rem;
    border-left: 1px solid var(--line-soft);
}

.lang-divider {
    opacity: 0.35;
}

.lang-btn {
    border: none;
    background: transparent;
    color: var(--text-dim);
    font-size: 0.74rem;
    letter-spacing: 0.11em;
    font-family: var(--font-mono);
    cursor: pointer;
    padding: 0.25rem;
}

.lang-btn:hover,
.lang-btn.active {
    color: var(--text-main);
}

.menu-toggle {
    display: none;
    border: 1px solid var(--line-soft);
    background: rgba(11, 23, 36, 0.45);
    color: var(--text-main);
    padding: 0.35rem 0.5rem;
    border-radius: 10px;
    font-size: 1rem;
    font-family: var(--font-mono);
    cursor: pointer;
}

/* Hero */
.hero {
    min-height: 100vh;
    padding-top: calc(var(--header-height) + 3.4rem);
    padding-bottom: 4.5rem;
    position: relative;
}

.hero::before,
.hero::after {
    content: '';
    position: absolute;
    pointer-events: none;
}

.hero::before {
    width: 430px;
    height: 430px;
    right: -110px;
    top: 16%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(80, 230, 255, 0.22), transparent 72%);
    filter: blur(8px);
}

.hero::after {
    left: -80px;
    bottom: 3%;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(137, 255, 205, 0.14), transparent 68%);
    animation: ambientFloat 9s ease-in-out infinite alternate;
}

.hero-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: 2.1rem;
    align-items: center;
}

.hero-copy {
    max-width: 660px;
}

.hero-tag {
    margin-bottom: 1.25rem;
}

.hero-flags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.52rem;
    margin-bottom: 1rem;
}

.hero-flags span {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 0.28rem 0.62rem;
    border: 1px solid rgba(145, 212, 255, 0.28);
    border-radius: 999px;
    background: rgba(7, 21, 34, 0.46);
    color: #d7f7ff;
    font-family: var(--font-mono);
    font-size: 0.69rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hero-copy h1 {
    margin-bottom: 1.2rem;
}

.hero-sub {
    max-width: 580px;
    color: var(--text-muted);
    font-size: clamp(1rem, 1.95vw, 1.22rem);
    margin-bottom: 1.9rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-bottom: 1.8rem;
}

.hero-actions .btn-outline {
    border-color: rgba(145, 212, 255, 0.14);
    background: rgba(7, 21, 34, 0.35);
}

.hero-actions .btn-outline:hover {
    border-color: rgba(80, 230, 255, 0.28);
    color: var(--accent-cyan);
    background: rgba(80, 230, 255, 0.1);
}

.hero-actions .btn-primary {
    box-shadow: 0 8px 20px rgba(80, 230, 255, 0.24);
}

.hero-actions .btn-primary:hover {
    box-shadow: 0 14px 26px rgba(80, 230, 255, 0.3);
}

.hero-metrics {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.85rem;
    max-width: 720px;
}

.metric-card {
    padding: 1rem 1rem 0.95rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--line-soft);
    background: rgba(8, 23, 40, 0.52);
}

.metric-value {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(1.05rem, 2vw, 1.5rem);
    font-weight: 600;
    margin-bottom: 0.35rem;
    color: #e7fbff;
}

.metric-label {
    display: block;
    color: var(--text-dim);
    font-size: 0.76rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    font-family: var(--font-mono);
}

.signal-panel {
    padding: 1.55rem;
    border-radius: var(--radius-xl);
    position: relative;
    overflow: hidden;
}

.signal-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: -65%;
    width: 55%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(137, 255, 205, 0.18), transparent);
    animation: scanner 4.2s linear infinite;
    pointer-events: none;
}

.panel-title {
    margin: 0.7rem 0 1.35rem;
    font-size: clamp(1.35rem, 2.5vw, 2rem);
}

.panel-sub {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.25rem;
}

.signal-lines {
    border: 1px solid var(--line-soft);
    border-radius: 14px;
    background: rgba(7, 19, 33, 0.55);
    padding: 0.55rem 0.9rem;
}

.signal-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 0.72rem 0;
    border-bottom: 1px solid rgba(143, 201, 237, 0.16);
    font-size: 0.86rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.signal-row:last-child {
    border-bottom: none;
}

.signal-value {
    color: var(--accent-mint);
}

.signal-wave {
    display: flex;
    align-items: flex-end;
    gap: 0.3rem;
    height: 44px;
    margin-top: 1.35rem;
}

.signal-wave span {
    flex: 1;
    border-radius: 999px;
    background: linear-gradient(180deg, rgba(137, 255, 205, 0.95), rgba(80, 230, 255, 0.35));
    height: 24%;
    animation: wavePulse 1.6s ease-in-out infinite;
    transform-origin: bottom;
}

.signal-wave span:nth-child(2) {
    animation-delay: 0.15s;
}

.signal-wave span:nth-child(3) {
    animation-delay: 0.3s;
}

.signal-wave span:nth-child(4) {
    animation-delay: 0.45s;
}

.signal-wave span:nth-child(5) {
    animation-delay: 0.6s;
}

/* Features */
.section-head {
    max-width: 760px;
    margin-bottom: 2.1rem;
}

.section-head h2 {
    margin-top: 1rem;
}

.section-head h1 {
    margin-top: 1rem;
}

.section-head p {
    color: var(--text-muted);
    margin-top: 0.95rem;
    font-size: 1.03rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.feature-card {
    position: relative;
    padding: 1.35rem;
    border-radius: var(--radius-lg);
    overflow: hidden;
    min-height: 220px;
}

.feature-card::after {
    content: '';
    position: absolute;
    inset: auto 0 0 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
    opacity: 0.5;
}

.feature-symbol {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(137, 255, 205, 0.38);
    background: rgba(11, 33, 46, 0.6);
    color: var(--accent-mint);
    font-size: 0.83rem;
    font-family: var(--font-mono);
    letter-spacing: 0.08em;
    margin-bottom: 1.15rem;
}

.feature-card h3 {
    margin-bottom: 0.6rem;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    max-width: 38ch;
}

/* Download */
.download-panel {
    padding: clamp(1.6rem, 4vw, 3rem);
    border-radius: var(--radius-xl);
    position: relative;
    overflow: hidden;
}

.download-panel::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(110deg, rgba(80, 230, 255, 0.25), rgba(137, 255, 205, 0.2), rgba(120, 168, 255, 0.25));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

.download-head {
    text-align: center;
    max-width: 740px;
    margin: 0 auto;
}

.download-head h2 {
    margin-top: 0.9rem;
}

.download-head p {
    margin-top: 0.8rem;
    color: var(--text-muted);
}

.platform-grid {
    margin-top: 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
    gap: 0.9rem;
}

.platform-btn {
    min-height: 126px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.62rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--line-soft);
    background: rgba(10, 26, 42, 0.58);
}

.platform-btn:hover {
    transform: translateY(-3px);
    border-color: rgba(137, 255, 205, 0.58);
    box-shadow: 0 12px 20px rgba(3, 14, 24, 0.38);
}

.platform-icon-img {
    width: 36px;
    height: 36px;
    object-fit: contain;
    display: block;
    filter: invert(87%) sepia(21%) saturate(2208%) hue-rotate(146deg) brightness(101%) contrast(103%);
}

.platform-name {
    font-family: var(--font-display);
    font-size: 0.95rem;
    letter-spacing: 0.01em;
}

.platform-status {
    margin-top: 0.1rem;
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-family: var(--font-mono);
    color: var(--text-dim);
}

.platform-btn.is-disabled {
    cursor: not-allowed;
    pointer-events: none;
    border-color: rgba(145, 212, 255, 0.12);
    background: rgba(8, 19, 31, 0.45);
}

.platform-btn.is-disabled .platform-icon-img {
    filter: invert(60%) sepia(12%) saturate(412%) hue-rotate(171deg) brightness(90%) contrast(87%);
    opacity: 0.72;
}

.platform-btn.is-disabled .platform-name {
    color: var(--text-muted);
}

/* Workflow */
.workflow-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
}

.workflow-card {
    padding: 1.35rem;
    min-height: 200px;
}

.workflow-step {
    font-family: var(--font-mono);
    color: var(--accent-cyan);
    letter-spacing: 0.08em;
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
}

.workflow-card h3 {
    margin-bottom: 0.65rem;
}

.workflow-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* FAQ */
.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 0.95rem;
}

.faq-item {
    padding: 1.2rem;
}

.faq-item h3 {
    margin-bottom: 0.62rem;
    font-size: 1.02rem;
}

.faq-item p {
    color: var(--text-muted);
    font-size: 0.94rem;
}

.support-strip {
    margin-top: 1rem;
    padding: 1.05rem 1.2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.support-title {
    font-family: var(--font-display);
    font-size: 1.05rem;
}

.support-desc {
    color: var(--text-muted);
    margin-top: 0.35rem;
    font-size: 0.9rem;
}

.support-links {
    display: flex;
    align-items: center;
    gap: 0.95rem;
    flex-wrap: wrap;
    font-size: 0.76rem;
    letter-spacing: 0.05em;
}

.support-links a {
    color: var(--accent-cyan);
    border-bottom: 1px solid transparent;
}

.support-links a:hover {
    border-color: rgba(80, 230, 255, 0.45);
}

/* Converter */
.converter-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: 1rem;
}

.converter-panel,
.converter-result {
    padding: clamp(1.4rem, 3vw, 2.2rem);
}

.converter-panel h1 {
    margin-top: 0.9rem;
}

.converter-panel .converter-desc {
    color: var(--text-muted);
    margin-top: 0.7rem;
}

.converter-panel code {
    font-family: var(--font-mono);
    color: var(--accent-mint);
}

.upload-zone {
    margin-top: 1.2rem;
    border-radius: var(--radius-lg);
    border: 1px dashed rgba(137, 255, 205, 0.44);
    background: rgba(9, 23, 39, 0.62);
    min-height: 220px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 1.5rem;
    cursor: pointer;
    transition: border-color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}

.upload-zone.dragover,
.upload-zone:hover {
    border-color: var(--accent-cyan);
    background: rgba(15, 36, 54, 0.74);
}

.upload-zone.has-file {
    border-style: solid;
    border-color: rgba(80, 230, 255, 0.6);
}

.upload-icon {
    width: 62px;
    height: 62px;
    border-radius: 14px;
    border: 1px solid rgba(80, 230, 255, 0.55);
    background: rgba(10, 29, 44, 0.58);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-cyan);
    font-family: var(--font-mono);
    letter-spacing: 0.08em;
    margin-bottom: 0.9rem;
}

.upload-title {
    font-family: var(--font-display);
    font-size: 1.02rem;
}

.upload-sub {
    color: var(--text-dim);
    font-size: 0.88rem;
    margin-top: 0.35rem;
}

.converter-actions {
    margin-top: 1rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.85rem;
}

.file-meta {
    color: var(--text-dim);
    font-size: 0.78rem;
}

.converter-status {
    margin-top: 0.8rem;
    color: var(--accent-cyan);
    font-size: 0.8rem;
}

.converter-result h2 {
    margin-bottom: 0.45rem;
}

.small-muted {
    color: var(--text-dim);
    font-size: 0.86rem;
}

.result-textarea {
    width: 100%;
    margin-top: 1rem;
    min-height: 360px;
    resize: vertical;
    border-radius: var(--radius-md);
    border: 1px solid var(--line-soft);
    background: rgba(4, 12, 20, 0.86);
    color: var(--text-main);
    font-family: var(--font-mono);
    font-size: 0.84rem;
    line-height: 1.6;
    padding: 0.95rem;
}

.result-actions {
    margin-top: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.result-actions .btn {
    min-height: 40px;
    padding: 0.56rem 0.95rem;
    font-size: 0.73rem;
}

.result-meta {
    margin-left: auto;
    color: var(--text-dim);
    font-size: 0.72rem;
}

.converter-tip {
    margin-top: 1rem;
    border-left: 2px solid rgba(80, 230, 255, 0.5);
    padding-left: 0.8rem;
    color: var(--text-muted);
    font-size: 0.88rem;
}

.converter-example {
    margin-top: 1rem;
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-md);
    background: rgba(7, 20, 33, 0.55);
    padding: 0.88rem;
}

.converter-example summary {
    cursor: pointer;
    color: var(--accent-cyan);
    font-size: 0.76rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    user-select: none;
}

.converter-example pre {
    margin-top: 0.72rem;
    white-space: pre-wrap;
    word-break: break-word;
    font-family: var(--font-mono);
    font-size: 0.77rem;
    color: var(--text-muted);
}

.converter-help {
    margin-top: 1rem;
    border: 1px solid rgba(145, 212, 255, 0.14);
    border-radius: var(--radius-md);
    background: rgba(8, 20, 33, 0.42);
    padding: 0.9rem;
}

.converter-help h3 {
    font-size: 0.92rem;
    margin-bottom: 0.45rem;
}

.converter-help ul {
    margin: 0;
    padding-left: 1.1rem;
}

.converter-help li {
    color: var(--text-muted);
    font-size: 0.82rem;
    margin-bottom: 0.4rem;
}

.converter-help code {
    color: var(--accent-mint);
    font-family: var(--font-mono);
    font-size: 0.78rem;
}

/* Footer */
.footer {
    border-top: 1px solid var(--line-soft);
    padding: 2.3rem 0;
    background: rgba(4, 11, 18, 0.68);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 1.3rem;
    flex-wrap: wrap;
}

.footer-link {
    color: var(--text-dim);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.footer-link:hover {
    color: var(--accent-cyan);
}

.footer-copy {
    color: var(--text-dim);
    font-size: 0.78rem;
    letter-spacing: 0.05em;
    margin-left: auto;
}

.footer-company {
    width: 100%;
    color: var(--text-dim);
    opacity: 0.55;
    font-size: 0.7rem;
    letter-spacing: 0.03em;
    text-align: right;
}

.footer-content.center {
    justify-content: center;
}

/* Inner pages */
.inner-main {
    padding: calc(var(--header-height) + 2.5rem) 0 4rem;
}

.legal-card {
    padding: clamp(1.4rem, 3vw, 2.4rem);
}

.legal-header {
    max-width: 820px;
    margin: 0 auto 2rem;
    text-align: center;
}

.legal-header h1 {
    margin-top: 0.95rem;
}

.legal-meta {
    margin-top: 0.8rem;
    color: var(--text-muted);
}

.legal-article {
    max-width: 840px;
    margin: 0 auto;
    color: var(--text-muted);
}

.legal-article h3 {
    margin-top: 1.7rem;
    margin-bottom: 0.6rem;
    color: var(--text-main);
}

.legal-article ul {
    margin-top: 0.85rem;
    padding-left: 1.2rem;
}

.legal-article li {
    margin-bottom: 0.4rem;
}

.legal-article a {
    color: var(--accent-cyan);
}

.back-link {
    font-size: 0.72rem;
}

/* Reveal motion */
.js-ready [data-animate] {
    opacity: 0;
    transform: translateY(22px);
    transition: transform 0.62s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.62s ease;
    transition-delay: var(--delay, 0s);
}

.js-ready [data-animate].is-visible {
    opacity: 1;
    transform: translateY(0);
}

.features-grid .feature-card:nth-child(2),
.platform-grid .platform-btn:nth-child(2),
.workflow-grid .workflow-card:nth-child(2) {
    --delay: 0.08s;
}

.features-grid .feature-card:nth-child(3),
.platform-grid .platform-btn:nth-child(3),
.workflow-grid .workflow-card:nth-child(3) {
    --delay: 0.14s;
}

.features-grid .feature-card:nth-child(4),
.platform-grid .platform-btn:nth-child(4) {
    --delay: 0.2s;
}

.features-grid .feature-card:nth-child(5),
.platform-grid .platform-btn:nth-child(5) {
    --delay: 0.26s;
}

.features-grid .feature-card:nth-child(6) {
    --delay: 0.32s;
}

/* Responsive */
@media (max-width: 1080px) {
    .hero-layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .hero-copy {
        max-width: 100%;
    }

    .signal-panel {
        max-width: 760px;
    }

    .converter-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 860px) {
    .section-pad {
        padding: 4.9rem 0;
    }

    .menu-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .nav-links {
        position: fixed;
        top: var(--header-height);
        left: 4%;
        right: 4%;
        display: grid;
        gap: 0.9rem;
        padding: 1.1rem;
        border-radius: 16px;
        border: 1px solid var(--card-border);
        background: rgba(7, 17, 30, 0.94);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        transform: translateY(-14px);
        opacity: 0;
        pointer-events: none;
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .lang-switch {
        margin: 0;
        padding: 0;
        border: none;
        justify-content: center;
    }

    .hero {
        min-height: auto;
    }

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

    .footer-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .workflow-grid {
        grid-template-columns: 1fr;
    }

    .support-strip {
        justify-content: center;
        text-align: center;
    }

    .support-links {
        justify-content: center;
    }
}

@media (max-width: 620px) {
    .container {
        width: min(94%, var(--container-width));
    }

    .hero {
        padding-top: calc(var(--header-height) + 2.5rem);
    }

    .hero-actions {
        width: 100%;
    }

    .hero-flags {
        gap: 0.4rem;
    }

    .hero-flags span {
        font-size: 0.64rem;
        min-height: 28px;
        padding: 0.24rem 0.54rem;
    }

    .hero-actions .btn {
        flex: 1;
        min-width: 150px;
    }

    .hero-metrics {
        grid-template-columns: 1fr;
    }

    .footer-content,
    .footer-links {
        align-items: center;
        justify-content: center;
        text-align: center;
    }

    .footer-copy {
        text-align: center;
        margin-left: 0;
    }

    .footer-company {
        text-align: center;
    }

    .result-textarea {
        min-height: 290px;
    }

    .result-meta {
        margin-left: 0;
    }
}

/* Keyframes */
@keyframes scanner {
    to {
        left: 120%;
    }
}

@keyframes wavePulse {
    0%,
    100% {
        transform: scaleY(0.35);
    }

    45% {
        transform: scaleY(1);
    }
}

@keyframes ambientFloat {
    from {
        transform: translateY(0);
    }

    to {
        transform: translateY(-18px);
    }
}

@keyframes ambientPulse {
    from {
        opacity: 0.35;
    }

    to {
        opacity: 0.65;
    }
}