/* ============================================
   Mytory Video Tools — GitHub Pages Styles
   Premium light aesthetic
   ============================================ */

/* --- Reset & Variables --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root:lang(ja),
:root:lang(zh) {
    word-break: normal;
}

:root {
    --color-bg: #fafaf9;
    word-break: keep-all;
    --color-surface: #ffffff;
    --color-surface-subtle: #f5f5f4;
    --color-surface-elevated: #ffffff;
    --color-border: #e4e4e7;
    --color-border-hover: #d4d4d8;
    --color-text-primary: #1c1917;
    --color-text-secondary: #57534e;
    --color-text-tertiary: #a8a29e;
    --color-accent: #3b82f6;
    --color-accent-hover: #2563eb;
    --color-accent-muted: rgba(59, 130, 246, 0.08);
    --color-accent-light: #dbeafe;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
    --max-width: 1200px;
    --nav-height: 64px;
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

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

/* --- Navigation --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--nav-height);
    background: rgba(250, 250, 249, 0.8);
    backdrop-filter: blur(16px) saturate(1.4);
    -webkit-backdrop-filter: blur(16px) saturate(1.4);
    border-bottom: 1px solid var(--color-border);
    transition: background 0.3s ease, border-color 0.3s ease;
}

.navbar__inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar__brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 15px;
    letter-spacing: -0.02em;
}

.navbar__logo {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    flex-shrink: 0;
}

.navbar__links {
    display: flex;
    align-items: center;
    gap: 4px;
}

.navbar__link {
    padding: 8px 14px;
    font-size: 13.5px;
    font-weight: 500;
    color: var(--color-text-secondary);
    border-radius: 8px;
    transition: all 0.2s var(--ease-out-expo);
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.navbar__link:hover {
    color: var(--color-text-primary);
    background: var(--color-accent-muted);
}

.navbar__link--external svg {
    opacity: 0.4;
    transition: opacity 0.2s ease;
}

.navbar__link--external:hover svg {
    opacity: 0.8;
}

.navbar__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.navbar__toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* --- Hero --- */
.hero {
    position: relative;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding-top: var(--nav-height);
}

.hero__bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    background:
        radial-gradient(ellipse 70% 50% at 60% 20%, rgba(59, 130, 246, 0.06), transparent),
        radial-gradient(ellipse 50% 40% at 20% 80%, rgba(59, 130, 246, 0.03), transparent);
}

.hero__inner {
    position: relative;
    z-index: 1;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 40px 24px 80px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    width: 100%;
}

.hero__content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.hero__eyebrow {
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-accent);
    font-family: var(--font-mono);
}

.hero__title {
    font-size: clamp(38px, 5vw, 72px);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.035em;
    color: var(--color-text-primary);
}

.hero__title--accent {
    background: linear-gradient(135deg, var(--color-accent), #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__sub {
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text-secondary);
    max-width: 52ch;
}

.hero__ctas {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 4px;
}

.hero__tech {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    color: var(--color-text-tertiary);
    font-family: var(--font-mono);
    margin-top: 8px;
    flex-wrap: wrap;
}

.hero__sep {
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: var(--color-text-tertiary);
    opacity: 0.3;
}

/* --- Hero Screenshot --- */
.hero__visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero__screenshot {
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.04),
        0 4px 12px rgba(0, 0, 0, 0.04),
        0 20px 60px rgba(0, 0, 0, 0.06);
    background: var(--color-surface);
    transform: perspective(1200px) rotateY(-2deg) rotateX(1deg);
    transition: transform 0.5s var(--ease-out-expo);
}

.hero__screenshot:hover {
    transform: perspective(1200px) rotateY(0deg) rotateX(0deg);
}

.hero__screenshot img {
    width: 100%;
    height: auto;
    display: block;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    transition: all 0.25s var(--ease-out-expo);
    cursor: pointer;
    border: none;
    line-height: 1;
}

.btn--primary {
    background: var(--color-accent);
    color: #fff;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
}

.btn--primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.25);
}

.btn--primary:active {
    transform: translateY(0);
}

.btn--ghost {
    background: transparent;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.btn--ghost:hover {
    color: var(--color-text-primary);
    border-color: var(--color-border-hover);
    background: var(--color-surface);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.btn--ghost:active {
    transform: translateY(0);
}

/* --- Language Navigator --- */
.lang-nav {
    padding: 24px 24px 16px;
    border-top: 1px solid var(--color-border);
    background: var(--color-surface);
}

.lang-nav__inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.lang-nav__label {
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-tertiary);
    font-family: var(--font-mono);
    white-space: nowrap;
}

.lang-nav__links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 4px;
    justify-content: center;
}

.lang-nav__link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 11px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: all 0.2s var(--ease-out-expo);
    white-space: nowrap;
}

.lang-nav__link:hover {
    color: var(--color-text-primary);
    background: var(--color-accent-muted);
}

.lang-nav__link--active {
    color: var(--color-accent);
    background: var(--color-accent-muted);
    font-weight: 600;
}

.lang-nav__flag {
    font-size: 16px;
    line-height: 1;
}

@media (max-width: 768px) {
    .lang-nav {
        padding: 16px 16px 12px;
    }
    .lang-nav__inner {
        gap: 10px;
    }
    .lang-nav__link {
        font-size: 12px;
        padding: 5px 9px;
    }
    .lang-nav__flag {
        font-size: 14px;
    }
}

/* --- Trusted / Powered By --- */
.trusted {
    padding: 48px 24px;
    border-top: 1px solid var(--color-border);
    background: var(--color-surface-subtle);
}

.trusted__inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

.trusted__label {
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--color-text-tertiary);
}

.trusted__logos {
    display: flex;
    align-items: center;
    gap: 36px;
    flex-wrap: wrap;
    justify-content: center;
}

.trusted__logo {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-tertiary);
    letter-spacing: -0.01em;
    transition: color 0.2s ease;
}

.trusted__logo:hover {
    color: var(--color-text-secondary);
}

/* --- Features --- */
.features {
    padding: 120px 24px;
}

.features__inner {
    max-width: var(--max-width);
    margin: 0 auto;
}

.features__header {
    text-align: center;
    max-width: 620px;
    margin: 0 auto 64px;
}

.features__title {
    font-size: clamp(30px, 3.5vw, 44px);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 16px;
    color: var(--color-text-primary);
}

.features__sub {
    font-size: 16px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.features__grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 20px;
}

.feature-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 14px;
    padding: 32px 28px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: all 0.35s var(--ease-out-expo);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    opacity: 0;
    transition: opacity 0.35s ease;
}

.feature-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.02),
        0 8px 24px rgba(0, 0, 0, 0.04),
        0 24px 48px rgba(0, 0, 0, 0.02);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card--wide {
    grid-column: span 2;
}

.feature-card__icon-wrap {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: var(--color-accent-muted);
    color: var(--color-accent);
    margin-bottom: 4px;
}

.feature-card__title {
    font-size: 17px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.feature-card__desc {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.feature-card__tags {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 4px;
}

.feature-card__tags li {
    font-size: 11px;
    font-weight: 500;
    padding: 4px 10px;
    border-radius: 6px;
    background: var(--color-accent-muted);
    border: 1px solid var(--color-accent-light);
    color: var(--color-accent);
    font-family: var(--font-mono);
}

/* --- Hardware Acceleration --- */
.hwaccel {
    padding: 120px 24px;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    background: linear-gradient(180deg, var(--color-surface-subtle), var(--color-bg));
}

.hwaccel__inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.hwaccel__content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.hwaccel__eyebrow {
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-accent);
    font-family: var(--font-mono);
}

.hwaccel__title {
    font-size: clamp(30px, 3.5vw, 44px);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
}

.hwaccel__title--accent {
    background: linear-gradient(135deg, var(--color-accent), #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hwaccel__desc {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 52ch;
}

.hwaccel__chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 4px;
}

.hwaccel__chip {
    font-size: 11px;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: 8px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
    transition: all 0.2s ease;
}

.hwaccel__chip:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: var(--color-accent-muted);
}

.hwaccel__visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* --- Diagram (CPU → GPU) --- */
.diagram {
    width: 100%;
    max-width: 380px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 14px;
    padding: 32px 28px;
    box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.02),
        0 4px 12px rgba(0, 0, 0, 0.03);
}

.diagram__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

/* Chip blocks */
.diagram__chip {
    width: 100%;
    padding: 16px 20px;
    border-radius: 10px;
    text-align: center;
    position: relative;
    transition: transform 0.3s var(--ease-out-expo), box-shadow 0.3s var(--ease-out-expo);
}

.diagram__chip:hover {
    transform: translateY(-2px);
}

.diagram__chip--cpu {
    background: #fafaf9;
    border: 1px solid var(--color-border);
}

.diagram__chip--gpu {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.06), rgba(124, 58, 237, 0.05));
    border: 1px solid rgba(59, 130, 246, 0.25);
}

.diagram__chip-label {
    font-size: 22px;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--color-text-primary);
    line-height: 1.2;
}

.diagram__chip--gpu .diagram__chip-label {
    background: linear-gradient(135deg, var(--color-accent), #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.diagram__chip-sub {
    font-size: 12px;
    font-weight: 500;
    color: var(--color-text-tertiary);
    margin-top: 4px;
}

.diagram__chip--gpu .diagram__chip-sub {
    color: var(--color-text-secondary);
}

.diagram__chip-badge {
    position: absolute;
    top: -10px;
    right: 16px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.08em;
    padding: 3px 10px;
    border-radius: 5px;
    background: var(--color-accent);
    color: #fff;
    font-family: var(--font-mono);
}

/* Arrow connecting chips */
.diagram__arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
}

.diagram__arrow-line {
    width: 2px;
    height: 20px;
    background: linear-gradient(180deg, var(--color-border), var(--color-accent));
    border-radius: 1px;
}

.diagram__arrow-head {
    width: 0;
    height: 0;
    border-left: 7px solid transparent;
    border-right: 7px solid transparent;
    border-top: 7px solid var(--color-accent);
}

/* Outcome row */
.diagram__outcome {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-accent);
    padding: 8px 16px;
    border-radius: 8px;
    background: var(--color-accent-muted);
    border: 1px solid var(--color-accent-light);
}

.diagram__outcome svg {
    flex-shrink: 0;
    color: var(--color-accent);
}

/* --- Language Support --- */
.languages {
    padding: 120px 24px;
}

.languages__inner {
    max-width: var(--max-width);
    margin: 0 auto;
}

.languages__header {
    text-align: center;
    max-width: 560px;
    margin: 0 auto 56px;
}

.languages__eyebrow {
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-accent);
    font-family: var(--font-mono);
    margin-bottom: 12px;
}

.languages__title {
    font-size: clamp(28px, 3.5vw, 42px);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 12px;
}

.languages__title--accent {
    background: linear-gradient(135deg, var(--color-accent), #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.languages__sub {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.languages__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.languages__list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 14px;
    padding: 24px;
}

.languages__item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.languages__item:hover {
    background: var(--color-accent-muted);
}

.languages__flag {
    font-size: 20px;
    line-height: 1;
}

.languages__code {
    margin-left: auto;
    font-size: 11px;
    font-weight: 500;
    font-family: var(--font-mono);
    padding: 2px 8px;
    border-radius: 4px;
    background: var(--color-surface-subtle);
    color: var(--color-text-tertiary);
    letter-spacing: 0.03em;
}

.languages__screenshot {
    border-radius: 12px;
    overflow: hidden;
    box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.04),
        0 4px 12px rgba(0, 0, 0, 0.04),
        0 20px 60px rgba(0, 0, 0, 0.06);
    background: var(--color-surface);
}

.languages__screenshot img {
    width: 100%;
    height: auto;
    display: block;
}

.languages__caption {
    padding: 12px 16px;
    font-size: 13px;
    color: var(--color-text-tertiary);
    border-top: 1px solid var(--color-border);
    line-height: 1.5;
}

/* --- Download --- */
.download {
    padding: 120px 24px;
    background: var(--color-surface-subtle);
    border-top: 1px solid var(--color-border);
}

.download__inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 44px;
}

.download__header {
    text-align: center;
    max-width: 500px;
}

.download__eyebrow {
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-accent);
    font-family: var(--font-mono);
    margin-bottom: 12px;
}

.download__title {
    font-size: clamp(28px, 3vw, 38px);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.3;
    margin-bottom: 12px;
}

.download__title-name {
    white-space: nowrap;
}

.download__sub {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.download__platforms {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    width: 100%;
    max-width: 680px;
    align-items: start;
}

.platform-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 36px 24px 32px;
    border-radius: 14px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    text-align: center;
    transition: all 0.35s var(--ease-out-expo);
    position: relative;
    overflow: hidden;
}

.platform-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    opacity: 0;
    transition: opacity 0.35s ease;
}

.platform-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.02),
        0 8px 24px rgba(0, 0, 0, 0.04),
        0 24px 48px rgba(0, 0, 0, 0.02);
}

.platform-card:hover::before {
    opacity: 1;
}

.platform-card__icon {
    width: 40px;
    height: 40px;
    color: var(--color-text-tertiary);
    transition: color 0.3s ease;
}

.platform-card:hover .platform-card__icon {
    color: var(--color-accent);
}

.platform-card__title {
    font-size: 16px;
    font-weight: 700;
}

.platform-card__desc {
    font-size: 13px;
    color: var(--color-text-secondary);
}

.platform-card__wrapper {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.platform-card__wrapper .platform-card {
    width: 100%;
}

.platform-card__alt {
    display: block;
    text-align: center;
    font-size: 12.5px;
    font-weight: 500;
    color: var(--color-text-tertiary);
    padding: 8px 12px;
    border-radius: 10px;
    transition: all 0.25s var(--ease-out-expo);
    border: 1px solid transparent;
}

.platform-card__alt:hover {
    color: var(--color-accent);
    background: var(--color-accent-muted);
    border-color: var(--color-accent-light);
}

.platform-card__meta {
    font-size: 10px;
    font-weight: 600;
    font-family: var(--font-mono);
    padding: 4px 12px;
    border-radius: 6px;
    background: var(--color-accent-muted);
    color: var(--color-accent);
    letter-spacing: 0.04em;
}

/* --- Concept / Philosophy --- */
.concept {
    padding: 120px 24px;
    border-top: 1px solid var(--color-border);
    background: linear-gradient(180deg, var(--color-surface-subtle), var(--color-bg));
}

.concept__inner {
    max-width: var(--max-width);
    margin: 0 auto;
}

.concept__header {
    text-align: center;
    margin-bottom: 48px;
}

.concept__eyebrow {
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-accent);
    font-family: var(--font-mono);
    margin-bottom: 12px;
}

.concept__title {
    font-size: clamp(30px, 3.5vw, 44px);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.concept__title--accent {
    background: linear-gradient(135deg, var(--color-accent), #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.concept__body {
    max-width: 680px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.concept__text {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.concept__text strong {
    color: var(--color-text-primary);
    font-weight: 600;
}

.concept__text em {
    font-style: italic;
    color: var(--color-text-primary);
}

.concept__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-top: 40px;
}

.concept__tag {
    font-size: 11px;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: 8px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
    transition: all 0.2s ease;
}

.concept__tag:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: var(--color-accent-muted);
}

/* --- Open Source --- */
.oss {
    padding: 100px 24px;
}

.oss__inner {
    max-width: var(--max-width);
    margin: 0 auto;
}

.oss__content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 20px;
    max-width: 500px;
    margin: 0 auto;
}

.oss__icon {
    color: var(--color-text-tertiary);
    opacity: 0.35;
}

.oss__title {
    font-size: 30px;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.oss__desc {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* --- Footer --- */
.footer {
    padding: 48px 24px;
    border-top: 1px solid var(--color-border);
}

.footer__inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

.footer__brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
}

.footer__brand img {
    border-radius: 4px;
}

.footer__links {
    display: flex;
    gap: 20px;
}

.footer__links a {
    font-size: 13px;
    color: var(--color-text-tertiary);
    transition: color 0.2s ease;
}

.footer__links a:hover {
    color: var(--color-text-primary);
}

.footer__copy {
    font-size: 12px;
    color: var(--color-text-tertiary);
    width: 100%;
    text-align: center;
    margin-top: 8px;
}

.footer__support {
    font-size: 13px;
    color: var(--color-text-tertiary);
    width: 100%;
    text-align: center;
    margin: 0 0 12px 0;
}

.footer__support a {
    color: var(--color-text-secondary);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color 0.2s ease;
}

.footer__support a:hover {
    color: var(--color-text-primary);
}

/* --- Reveal Animation --- */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s var(--ease-out-expo), transform 0.6s var(--ease-out-expo);
}

.reveal--visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .hero__inner {
        grid-template-columns: 1fr;
        gap: 48px;
        text-align: center;
    }

    .hero__content {
        align-items: center;
        order: 1;
    }

    .hero__sub {
        max-width: 100%;
    }

    .hero__ctas {
        justify-content: center;
    }

    .hero__tech {
        justify-content: center;
    }

    .hero__visual {
        order: 0;
    }

    .hero__screenshot {
        max-width: 560px;
        margin: 0 auto;
        transform: none;
    }

    .hero__screenshot:hover {
        transform: none;
    }

    .hwaccel__inner {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 48px;
    }

    .hwaccel__content {
        align-items: center;
        order: 1;
    }

    .hwaccel__desc {
        max-width: 100%;
    }

    .hwaccel__chips {
        justify-content: center;
    }

    .hwaccel__diagram {
        max-width: 300px;
        margin: 0 auto;
    }

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

    .feature-card--wide {
        grid-column: span 1;
    }

    .languages__grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .languages__list {
        order: 1;
    }

    .languages__screenshot {
        order: 0;
    }
}

@media (max-width: 768px) {
    .navbar__links {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: rgba(250, 250, 249, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 12px;
        gap: 2px;
        border-bottom: 1px solid var(--color-border);
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    }

    .navbar__links--open {
        display: flex;
    }

    .navbar__link {
        width: 100%;
        padding: 12px 16px;
    }

    .navbar__toggle {
        display: flex;
    }

    .hero {
        min-height: auto;
    }

    .hero__inner {
        padding: 80px 20px 40px;
        gap: 36px;
    }

    .hero__title {
        font-size: 34px;
    }

    .features {
        padding: 80px 20px;
    }

    .features__grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .feature-card {
        padding: 24px 20px;
    }

    .hwaccel {
        padding: 80px 20px;
    }

    .languages {
        padding: 80px 20px;
    }

    .languages__list {
        padding: 16px;
    }

    .languages__item {
        padding: 10px 12px;
        font-size: 14px;
    }

    .download {
        padding: 80px 20px;
    }

    .download__platforms {
        grid-template-columns: 1fr;
        max-width: 300px;
    }

    .oss {
        padding: 80px 20px;
    }

    .footer__inner {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .footer__links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero__title {
        font-size: 28px;
    }

    .hero__sub {
        font-size: 14px;
    }

    .btn {
        padding: 10px 22px;
        font-size: 14px;
    }

    .trusted__logos {
        gap: 20px;
    }

    .trusted__logo {
        font-size: 12px;
    }
}