/* ===== Black & White — Premium ===== */
:root {
    --black: #000000;
    --white: #ffffff;
    --font: 'Plus Jakarta Sans', system-ui, sans-serif;
    --font-display: 'Cormorant Garamond', Georgia, serif;
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --container: 1160px;
    --header-h: 72px;
    --panel-bg: rgba(255, 255, 255, 0.04);
    --panel-border: rgba(255, 255, 255, 0.1);
    --panel-radius: 14px;
    --panel-hover: rgba(255, 255, 255, 0.08);
    --hover-dur: 0.28s;
    --hover-lift: -3px;
    --hover-border: rgba(255, 255, 255, 0.22);
    --hover-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
    --click-dur: 0.15s;
}

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

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

body {
    font-family: var(--font);
    background: var(--black);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 1.5rem;
}

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

@media (hover: hover) {
    .brand {
        transition: opacity var(--hover-dur) var(--ease);
    }

    .brand:hover { opacity: 0.82; }
}

/* Noise texture overlay */
.bg-noise {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.035;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 200;
    height: var(--header-h);
    transition: background 0.4s, border-color 0.4s, backdrop-filter 0.4s;
    border-bottom: 1px solid transparent;
}

.header.scrolled {
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(20px);
    border-bottom-color: rgba(255, 255, 255, 0.1);
}

.header-row {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-mark {
    width: 36px;
    height: 36px;
    background: var(--white);
    color: var(--black);
    border-radius: 10px;
    display: grid;
    place-items: center;
    font-weight: 800;
    font-size: 0.9rem;
}

.brand-mark-sm { width: 32px; height: 32px; font-size: 0.8rem; }

.brand-name {
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: -0.02em;
}

.nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav a {
    font-size: 0.85rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.55);
    position: relative;
    transition: color var(--hover-dur) var(--ease);
}

@media (hover: hover) {
    .nav a:not(.nav-cta)::after {
        content: '';
        position: absolute;
        left: 0;
        bottom: -4px;
        width: 100%;
        height: 1px;
        background: var(--white);
        transform: scaleX(0);
        transform-origin: left;
        transition: transform var(--hover-dur) var(--ease);
    }

    .nav a:not(.nav-cta):hover {
        color: var(--white);
    }

    .nav a:not(.nav-cta):hover::after {
        transform: scaleX(1);
    }
}

.nav-cta {
    padding: 0.5rem 1rem !important;
    border: 1px solid rgba(255, 255, 255, 0.25) !important;
    border-radius: 999px !important;
    color: var(--white) !important;
    transition: background var(--hover-dur) var(--ease), color var(--hover-dur) var(--ease), border-color var(--hover-dur) var(--ease) !important;
}

@media (hover: hover) {
    .nav-cta:hover {
        background: var(--white) !important;
        color: var(--black) !important;
        border-color: var(--white) !important;
    }
}

/* ===== Hero ===== */
.hero {
    padding: calc(var(--header-h) + 4rem) 0 5rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 65%);
    pointer-events: none;
}

.hero-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.label-row {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 1.5rem;
}

.label-dot {
    width: 8px;
    height: 8px;
    background: var(--white);
    border-radius: 50%;
    animation: pulse 2s ease infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.85); }
}

.label-text {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.5);
}

.hero h1 {
    font-size: clamp(2.4rem, 5vw, 3.75rem);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: 1.25rem;
}

.outline-text {
    -webkit-text-stroke: 1.5px var(--white);
    color: transparent;
}

.hero-desc {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.55);
    max-width: 420px;
    line-height: 1.75;
    margin-bottom: 2rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem 1.6rem;
    border-radius: 12px;
    font-family: var(--font);
    font-size: 0.9rem;
    font-weight: 600;
    border: 2px solid transparent;
    transition:
        transform var(--hover-dur) var(--ease),
        background var(--hover-dur) var(--ease),
        color var(--hover-dur) var(--ease),
        border-color var(--hover-dur) var(--ease),
        box-shadow var(--hover-dur) var(--ease);
    cursor: pointer;
}

.btn-primary {
    background: var(--white);
    color: var(--black);
    border-color: var(--white);
    box-shadow: 0 2px 16px rgba(255, 255, 255, 0.1);
}

.btn-ghost {
    background: transparent;
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.25);
}

@media (hover: hover) {
    .btn-primary:hover {
        transform: translateY(var(--hover-lift));
        background: transparent;
        color: var(--white);
        box-shadow: none;
    }

    .btn-ghost:hover {
        border-color: rgba(255, 255, 255, 0.55);
        background: rgba(255, 255, 255, 0.05);
        transform: translateY(var(--hover-lift));
    }
}

.btn:active {
    transform: scale(0.96);
    transition-duration: var(--click-dur);
}

.filter-btn:active,
.nav-cta:active {
    transform: scale(0.96);
    transition-duration: var(--click-dur);
}

/* Ripple click effect */
.has-ripple {
    position: relative;
    overflow: hidden;
    isolation: isolate;
}

.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.35);
    transform: scale(0);
    animation: ripple-pop 0.55s var(--ease) forwards;
    pointer-events: none;
    z-index: 0;
}

.btn-dl .ripple,
.filter-btn.active .ripple {
    background: rgba(0, 0, 0, 0.12);
}

@keyframes ripple-pop {
    to { transform: scale(1); opacity: 0; }
}

/* Hero entrance stagger */
.hero-anim {
    opacity: 0;
    transform: translateY(22px);
    animation: hero-in 0.75s var(--ease) forwards;
    animation-delay: calc(0.12s + var(--d, 0) * 0.08s);
}

@keyframes hero-in {
    to { opacity: 1; transform: translateY(0); }
}

.hero-trust {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
}

.hero-trust li {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.45);
    font-weight: 500;
}

.hero-trust svg {
    width: 16px;
    height: 16px;
    color: var(--white);
    opacity: 0.7;
}

/* Hero visual — orbit */
.hero-visual {
    position: relative;
    width: 100%;
    max-width: 420px;
    aspect-ratio: 1;
    margin: 0 auto;
    display: grid;
    place-items: center;
}

.visual-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.visual-ring-1 {
    inset: 8%;
    animation: spin 30s linear infinite;
}

.visual-ring-2 {
    inset: 22%;
    border-style: dashed;
    animation: spin 20s linear infinite reverse;
}

@keyframes spin { to { transform: rotate(360deg); } }

.visual-core {
    position: relative;
    z-index: 2;
    width: 140px;
    height: 140px;
    background: var(--white);
    color: var(--black);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    box-shadow: 0 0 80px rgba(255, 255, 255, 0.15);
}

.core-label {
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    opacity: 0.5;
}

.visual-core strong {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.04em;
}

.core-sub {
    font-size: 0.65rem;
    font-weight: 600;
    opacity: 0.45;
    margin-top: 0.15rem;
}

.orbit-icon {
    position: absolute;
    width: 48px;
    height: 48px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    backdrop-filter: blur(8px);
    border-radius: var(--panel-radius);
    display: grid;
    place-items: center;
    animation: float 4s ease-in-out infinite;
    transition: border-color var(--hover-dur) var(--ease), background var(--hover-dur) var(--ease);
}

@media (hover: hover) {
    .orbit-icon:hover {
        border-color: var(--hover-border);
        background: rgba(255, 255, 255, 0.08);
        animation-play-state: paused;
    }
}

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

.orbit-icon-1 { top: 5%;  left: 50%; transform: translateX(-50%); animation-delay: 0s; }
.orbit-icon-2 { top: 22%; right: 5%;  animation-delay: 0.5s; }
.orbit-icon-3 { bottom: 22%; right: 0; animation-delay: 1s; }
.orbit-icon-4 { bottom: 5%;  left: 50%; transform: translateX(-50%); animation-delay: 1.5s; }
.orbit-icon-5 { top: 30%;  left: 0;   animation-delay: 2s; }

@keyframes float {
    0%, 100% { translate: 0 0; }
    50% { translate: 0 -8px; }
}

/* ===== Stats strip ===== */
.stats-strip {
    padding: 0 0 2.5rem;
    position: relative;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
}

.stat-item {
    padding: 1.1rem 1.25rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    text-align: center;
    transition:
        border-color var(--hover-dur) var(--ease),
        background var(--hover-dur) var(--ease),
        transform var(--hover-dur) var(--ease);
}

.stat-item strong {
    display: block;
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 0.2rem;
}

.stat-num {
    font-variant-numeric: tabular-nums;
    transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
}

.stat-num.is-counting {
    opacity: 0.85;
}

.stat-num.is-done {
    animation: stat-pop 0.35s var(--ease);
}

@keyframes stat-pop {
    0%   { transform: scale(1); }
    40%  { transform: scale(1.06); }
    100% { transform: scale(1); }
}

.stat-item span {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.4);
}

@media (hover: hover) {
    .stat-item:hover {
        border-color: var(--hover-border);
        background: rgba(255, 255, 255, 0.05);
        transform: translateY(var(--hover-lift));
    }
}

/* ===== Marquee ===== */
.marquee-wrap {
    overflow: hidden;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    padding: 0.85rem 0;
    margin-bottom: 2.5rem;
    mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}

.marquee-track {
    display: flex;
    align-items: center;
    gap: 2rem;
    width: max-content;
    animation: marquee 28s linear infinite;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.35);
    white-space: nowrap;
}

.marquee-dot {
    font-size: 0.45rem;
    opacity: 0.4;
}

@keyframes marquee {
    to { transform: translateX(-50%); }
}

/* ===== Section headers ===== */
.section-top {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.section-tag {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 0.5rem;
}

.section-tag--dark { color: rgba(0, 0, 0, 0.4); }

.section-top h2 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 800;
    letter-spacing: -0.03em;
}

.section-note {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.45);
    max-width: 280px;
    text-align: right;
    line-height: 1.65;
}

/* ===== Downloads — Bento Grid ===== */
.downloads {
    padding: 0 0 5rem;
    background: var(--black);
    color: var(--white);
    position: relative;
}

.downloads::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
}

.downloads::after {
    content: '';
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translateX(-50%);
    width: min(900px, 80%);
    height: 420px;
    background: radial-gradient(ellipse, rgba(255,255,255,0.04) 0%, transparent 70%);
    pointer-events: none;
}

.downloads .section-tag { color: rgba(255, 255, 255, 0.4); }
.downloads .section-top h2 { color: var(--white); }
.downloads .section-note { color: rgba(255, 255, 255, 0.5); }

/* ===== Unified Panel System ===== */
.panel {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--panel-radius);
    overflow: hidden;
}

.panel-toolbar {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--panel-border);
}

.dl-filters {
    position: relative;
    display: inline-flex;
    gap: 0.35rem;
    margin-bottom: 1.75rem;
    padding: 0.35rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 999px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.filter-indicator {
    position: absolute;
    top: 0;
    left: 0;
    border-radius: 999px;
    background: var(--white);
    box-shadow: 0 2px 16px rgba(255, 255, 255, 0.12);
    transition: transform 0.35s var(--ease), width 0.35s var(--ease), height 0.35s var(--ease);
    pointer-events: none;
    z-index: 0;
}

.filter-btn {
    position: relative;
    z-index: 1;
    padding: 0.55rem 1.2rem;
    background: transparent;
    color: rgba(255, 255, 255, 0.45);
    border: none;
    border-radius: 999px;
    font-family: var(--font);
    font-size: 0.76rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    cursor: pointer;
    transition:
        color 0.35s var(--ease),
        transform var(--click-dur) var(--ease);
}

@media (hover: hover) {
    .filter-btn:hover:not(.active) {
        color: var(--white);
    }
}

.filter-btn.active {
    background: transparent;
    color: var(--black);
    box-shadow: none;
}

/* Download cards — ultra premium */
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.35rem;
    position: relative;
    z-index: 1;
}

.dl-card {
    position: relative;
    border-radius: 20px;
    transition: transform var(--hover-dur) var(--ease);
}

.dl-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 20px;
    padding: 1px;
    background: linear-gradient(155deg, rgba(255,255,255,0.28) 0%, rgba(255,255,255,0.06) 50%, rgba(255,255,255,0.02) 100%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    z-index: 2;
    opacity: 0.55;
    transition: opacity var(--hover-dur) var(--ease);
}

.dl-card.hidden { display: none; }

.dl-card.filter-out {
    animation: filter-out 0.28s var(--ease) forwards;
    pointer-events: none;
}

.dl-card.filter-in {
    animation: filter-in 0.4s var(--ease) forwards;
}

@keyframes filter-out {
    to { opacity: 0; transform: scale(0.94) translateY(8px); }
}

@keyframes filter-in {
    from { opacity: 0; transform: scale(0.94) translateY(12px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

@media (min-width: 769px) {
    .card-grid {
        grid-template-columns: repeat(6, 1fr);
    }

    .dl-card {
        grid-column: span 2;
    }

    .dl-card:nth-child(4):nth-last-child(2) {
        grid-column: 2 / span 2;
    }

    .dl-card:nth-child(5):nth-last-child(1) {
        grid-column: 4 / span 2;
    }
}

.dl-card-glow {
    position: absolute;
    top: -50px;
    right: -30px;
    width: 160px;
    height: 160px;
    background: radial-gradient(circle, rgba(255,255,255,0.07) 0%, transparent 68%);
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--hover-dur) var(--ease);
    z-index: 0;
    filter: blur(2px);
}

.dl-card-inner {
    position: relative;
    z-index: 1;
    overflow: hidden;
    background:
        linear-gradient(168deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.03) 38%, rgba(255,255,255,0.015) 100%);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 20px;
    padding: 1.4rem 1.35rem 1.3rem;
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
    min-height: 210px;
    box-shadow:
        0 1px 0 rgba(255,255,255,0.06) inset,
        0 8px 32px rgba(0, 0, 0, 0.35);
    transition:
        box-shadow var(--hover-dur) var(--ease),
        background var(--hover-dur) var(--ease);
}

@media (hover: hover) {
    .dl-card:hover {
        transform: translateY(var(--hover-lift));
    }

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

    .dl-card:hover .dl-card-glow { opacity: 1; }

    .dl-card:hover .dl-card-inner {
        background: linear-gradient(168deg, rgba(255,255,255,0.09) 0%, rgba(255,255,255,0.04) 38%, rgba(255,255,255,0.02) 100%);
        box-shadow:
            0 1px 0 rgba(255,255,255,0.08) inset,
            var(--hover-shadow);
    }
}

.dl-card-inner::before {
    content: '';
    position: absolute;
    top: 0; left: 12%; right: 12%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.25), transparent);
    pointer-events: none;
}

.dl-card-shine {
    position: absolute;
    top: -60px;
    left: 50%;
    transform: translateX(-50%);
    width: 140px;
    height: 140px;
    background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 65%);
    pointer-events: none;
}

.dl-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.dl-card-icon {
    position: relative;
    width: 44px;
    height: 44px;
    background: var(--white);
    color: var(--black);
    border-radius: 12px;
    display: grid;
    place-items: center;
    box-shadow: 0 2px 12px rgba(255, 255, 255, 0.12);
    transition: box-shadow var(--hover-dur) var(--ease);
}

@media (hover: hover) {
    .dl-card:hover .dl-card-icon {
        box-shadow: 0 4px 20px rgba(255, 255, 255, 0.18);
    }
}

.dl-card-icon svg { width: 20px; height: 20px; }

.dl-card-tag {
    font-size: 0.56rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.55);
    padding: 0.32rem 0.65rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 999px;
    backdrop-filter: blur(4px);
}

.dl-card-body { flex: 1; }

.dl-card-label {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.56rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.32);
    margin-bottom: 0.4rem;
}

.dl-card-dot {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--white);
    box-shadow: 0 0 6px rgba(255,255,255,0.6);
    flex-shrink: 0;
}

.dl-card-body h3 {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 600;
    font-style: italic;
    margin-bottom: 0.35rem;
    letter-spacing: -0.01em;
    line-height: 1.2;
    background: linear-gradient(180deg, #fff 30%, rgba(255,255,255,0.72) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.dl-card-body p {
    font-size: 0.74rem;
    color: rgba(255, 255, 255, 0.42);
    line-height: 1.6;
    letter-spacing: 0.01em;
}

.dl-card-foot {
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
    padding-top: 0.95rem;
    border-top: 1px solid rgba(255, 255, 255, 0.07);
    margin-top: auto;
}

.dl-card-size {
    display: inline-flex;
    align-self: flex-start;
    font-size: 0.64rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.38);
    padding: 0.28rem 0.55rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 6px;
}

.panel-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    background: transparent;
}

.panel-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--panel-border);
    border-radius: 14px;
    padding: 1.15rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    min-height: auto;
    transition:
        border-color var(--hover-dur) var(--ease),
        background var(--hover-dur) var(--ease),
        transform var(--hover-dur) var(--ease),
        box-shadow var(--hover-dur) var(--ease);
}

@media (hover: hover) {
    .panel-card:not(.guide-card):hover {
        border-color: var(--hover-border);
        background: rgba(255, 255, 255, 0.04);
        transform: translateY(var(--hover-lift));
        box-shadow: var(--hover-shadow);
    }
}

.panel-card.hidden { display: none; }

.panel-card-icon {
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    display: grid;
    place-items: center;
    color: var(--white);
}

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

.panel-card-body { flex: 1; }

.panel-card-tag {
    display: inline-block;
    font-size: 0.58rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 0.3rem;
}

.panel-card-body h3 {
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 0.2rem;
}

.panel-card-body p {
    font-size: 0.72rem;
    color: rgba(255, 255, 255, 0.45);
    line-height: 1.5;
}

.panel-card-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    padding-top: 0.65rem;
    border-top: 1px solid var(--panel-border);
    margin-top: auto;
}

.panel-card-size {
    font-size: 0.68rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.35);
}

.btn-dl {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.72rem 1rem;
    background: var(--white);
    color: var(--black);
    border: 1px solid var(--white);
    border-radius: 11px;
    font-family: var(--font);
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    transition:
        background var(--hover-dur) var(--ease),
        color var(--hover-dur) var(--ease),
        border-color var(--hover-dur) var(--ease),
        box-shadow var(--hover-dur) var(--ease);
    box-shadow: 0 2px 12px rgba(255, 255, 255, 0.1);
}

.btn-dl svg {
    width: 14px;
    height: 14px;
    transition: transform var(--hover-dur) var(--ease);
}

@media (hover: hover) {
    .btn-dl:hover {
        background: transparent;
        color: var(--white);
        border-color: rgba(255, 255, 255, 0.45);
        box-shadow: none;
    }

    .btn-dl:hover svg { transform: translateY(1px); }
}

.btn-dl:active,
.btn-dl.clicked {
    transform: scale(0.96);
    transition-duration: var(--click-dur);
}

.btn-dl.loading {
    pointer-events: none;
    opacity: 0.7;
}

.btn-dl.loading svg { animation: spin 0.7s linear infinite; }

.btn-dl.loading::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: rgba(255, 255, 255, 0.12);
    animation: pulse-bg 1s ease infinite;
    pointer-events: none;
}

@keyframes pulse-bg {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.65; }
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ===== Guide ===== */
.guide {
    background: var(--black);
    color: var(--white);
    padding: 4rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.guide .section-tag--dark {
    color: rgba(255, 255, 255, 0.4);
}

.guide-title {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 2.5rem;
    color: var(--white);
}

.guide-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

/* Guide step cards */
.guide-card {
    position: relative;
    padding: 0;
    border-radius: 16px;
    overflow: hidden;
    cursor: default;
}

.guide-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 16px;
    padding: 1px;
    background: linear-gradient(155deg, rgba(255,255,255,0.22) 0%, rgba(255,255,255,0.05) 50%, rgba(255,255,255,0.02) 100%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    z-index: 2;
    opacity: 0.5;
    transition: opacity var(--hover-dur) var(--ease);
}

.guide-card-inner {
    position: relative;
    z-index: 1;
    padding: 1.75rem 1.5rem 1.6rem;
    min-height: 170px;
    display: flex;
    flex-direction: column;
    background: linear-gradient(168deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.015) 100%);
    border-radius: 16px;
    transition:
        background var(--hover-dur) var(--ease),
        transform var(--hover-dur) var(--ease);
}

.guide-card-inner::before {
    content: '';
    position: absolute;
    top: 0; left: 15%; right: 15%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.18), transparent);
    opacity: 0;
    transition: opacity var(--hover-dur) var(--ease);
}

.guide-step {
    display: block;
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    color: rgba(255, 255, 255, 0.2);
    margin-bottom: 1rem;
    line-height: 1;
    transition:
        color var(--hover-dur) var(--ease),
        transform var(--hover-dur) var(--ease),
        opacity var(--hover-dur) var(--ease);
}

.guide-card-body {
    flex: 1;
    transition: transform var(--hover-dur) var(--ease);
}

.guide-card-body h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.45rem;
    transition: color var(--hover-dur) var(--ease);
}

.guide-card-body p {
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.45);
    line-height: 1.6;
    transition: color var(--hover-dur) var(--ease);
}

.guide-card-arrow {
    position: absolute;
    bottom: 1.4rem;
    right: 1.4rem;
    font-size: 1.1rem;
    color: var(--white);
    opacity: 0;
    transform: translateX(-8px);
    transition:
        opacity var(--hover-dur) var(--ease),
        transform var(--hover-dur) var(--ease);
}

@media (hover: hover) {
    .guide-card:hover {
        transform: translateY(-5px);
        border-color: transparent;
        background: transparent;
        box-shadow: none;
    }

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

    .guide-card:hover .guide-card-inner {
        background: linear-gradient(168deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.03) 100%);
        box-shadow: var(--hover-shadow);
    }

    .guide-card:hover .guide-card-inner::before { opacity: 1; }

    .guide-card:hover .guide-step {
        color: var(--white);
        transform: translateX(4px);
    }

    .guide-card:hover .guide-card-body {
        transform: translateX(4px);
    }

    .guide-card:hover .guide-card-body h4 { color: var(--white); }

    .guide-card:hover .guide-card-body p {
        color: rgba(255, 255, 255, 0.6);
    }

    .guide-card:hover .guide-card-arrow {
        opacity: 0.7;
        transform: translateX(0);
    }
}

.guide-card:active {
    transform: scale(0.98);
    transition-duration: var(--click-dur);
}

/* Scroll-in animation for guide cards */
.guide-card.scroll-reveal.is-visible .guide-step {
    animation: guide-step-in 0.65s var(--ease) forwards;
}

.guide-card.scroll-reveal.is-visible .guide-card-body {
    animation: guide-body-in 0.65s var(--ease) forwards;
}

.guide-card.scroll-reveal:nth-child(1).is-visible .guide-step { animation-delay: 0.05s; }
.guide-card.scroll-reveal:nth-child(1).is-visible .guide-card-body { animation-delay: 0.12s; }
.guide-card.scroll-reveal:nth-child(2).is-visible .guide-step { animation-delay: 0.15s; }
.guide-card.scroll-reveal:nth-child(2).is-visible .guide-card-body { animation-delay: 0.22s; }
.guide-card.scroll-reveal:nth-child(3).is-visible .guide-step { animation-delay: 0.25s; }
.guide-card.scroll-reveal:nth-child(3).is-visible .guide-card-body { animation-delay: 0.32s; }

@keyframes guide-step-in {
    from { opacity: 0; transform: translateY(16px); color: rgba(255,255,255,0); }
    to   { opacity: 1; transform: translateY(0); color: rgba(255,255,255,0.2); }
}

@keyframes guide-body-in {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

.guide-cards .panel-card {
    min-height: auto;
    padding: 0;
}

/* ===== CTA strip ===== */
.cta-strip {
    padding: 3.5rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    background: linear-gradient(180deg, rgba(255,255,255,0.03) 0%, transparent 100%);
}

.cta-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    flex-wrap: wrap;
    padding: 2rem 2.25rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 18px;
}

.cta-text h3 {
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 0.35rem;
}

.cta-text p {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.45);
    max-width: 420px;
}

.cta-text .section-tag { margin-bottom: 0.4rem; }

/* ===== Footer ===== */
.footer {
    background: var(--black);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 2.5rem 0;
}

.footer-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.footer-brand strong {
    display: block;
    font-size: 0.9rem;
    font-weight: 700;
}

.footer-brand span {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.4);
}

.footer-copy {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.3);
}

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

.footer-links a {
    font-size: 0.8rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.45);
    transition: color var(--hover-dur) var(--ease);
}

@media (hover: hover) {
    .footer-links a:hover { color: var(--white); }
}

/* ===== Alert & Toast ===== */
.alert {
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 12px;
    font-size: 0.85rem;
    display: none;
}

.alert.show {
    display: block;
    animation: alert-in 0.45s var(--ease) forwards;
}

@keyframes alert-in {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(120%);
    background: var(--white);
    color: var(--black);
    padding: 0.85rem 1.5rem;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
    opacity: 0;
    transition: transform 0.45s var(--ease), opacity 0.45s;
    z-index: 300;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.toast-icon {
    width: 24px;
    height: 24px;
    background: var(--black);
    color: var(--white);
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-size: 0.7rem;
    animation: toast-bounce 0.5s var(--ease);
}

@keyframes toast-bounce {
    0% { transform: scale(0); }
    60% { transform: scale(1.15); }
    100% { transform: scale(1); }
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* ===== Reveal ===== */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    animation: reveal 0.7s var(--ease) forwards;
}

.dl-card:nth-child(1) { animation-delay: 0.04s; }
.dl-card:nth-child(2) { animation-delay: 0.08s; }
.dl-card:nth-child(3) { animation-delay: 0.12s; }
.dl-card:nth-child(4) { animation-delay: 0.16s; }
.dl-card:nth-child(5) { animation-delay: 0.2s; }

.panel-card:nth-child(1) { animation-delay: 0.05s; }

.guide-cards .panel-card:nth-child(1) { animation-delay: 0.1s; }
.guide-cards .panel-card:nth-child(2) { animation-delay: 0.18s; }
.guide-cards .panel-card:nth-child(3) { animation-delay: 0.26s; }

@keyframes reveal {
    to { opacity: 1; transform: translateY(0); }
}

.scroll-reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

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

.guide-title.scroll-reveal { transition-delay: 0s; }

.guide-cards .panel-card.scroll-reveal:nth-child(1) { transition-delay: 0.06s; }
.guide-cards .panel-card.scroll-reveal:nth-child(2) { transition-delay: 0.13s; }
.guide-cards .panel-card.scroll-reveal:nth-child(3) { transition-delay: 0.2s; }

.dl-filters.scroll-reveal { transition-delay: 0.05s; }

.cta-inner.scroll-reveal { transition-delay: 0.08s; }

/* Focus — keyboard navigation */
.btn:focus-visible,
.btn-dl:focus-visible,
.filter-btn:focus-visible,
.nav a:focus-visible,
.brand:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.55);
    outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

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

/* ===== Responsive ===== */
@media (max-width: 960px) {
    .hero-layout {
        grid-template-columns: 1fr;
        gap: 2.5rem;
        text-align: center;
    }

    .stats-grid { grid-template-columns: repeat(2, 1fr); }

    .hero-desc { margin-left: auto; margin-right: auto; }
    .hero-actions { justify-content: center; }
    .hero-trust { justify-content: center; }

    .section-top { flex-direction: column; align-items: flex-start; }
    .section-note { text-align: left; max-width: none; }

    .guide-cards { grid-template-columns: 1fr; }

    .cta-inner { flex-direction: column; align-items: flex-start; }
    .footer-row { flex-wrap: wrap; }
    .footer-links { order: 3; width: 100%; }
}

@media (max-width: 768px) {
    .card-grid { grid-template-columns: 1fr 1fr; }

    .dl-card { grid-column: auto !important; }

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

    .dl-card-body h3 { font-size: 1.2rem; }

    .dl-card-foot {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }

    .btn-dl { justify-content: center; }

    .dl-filters { display: flex; width: 100%; }
    .filter-btn { flex: 1; text-align: center; }
}

@media (max-width: 480px) {
    .card-grid { grid-template-columns: 1fr; }
    .guide-cards { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    .nav a:not(.nav-cta) { display: none; }

    .hero-visual { max-width: 300px; }

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