/* === Reset & tokens === */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter", system-ui, sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.55;
}

/* Brand display font — gives Slatly a distinctive typographic identity on the
   wordmark + section headings. */
:root { --brand-font: "Bricolage Grotesque", -apple-system, BlinkMacSystemFont, system-ui, sans-serif; }
.brand-name,
.footer-brand,
h1, h2 {
    font-family: var(--brand-font);
}
.brand-name {
    font-weight: 800;
    font-size: 18px;
    letter-spacing: -0.02em;
}
h1, h2 {
    font-weight: 700;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { padding: 0; margin: 0; list-style: none; }

:root {
    --bg: #0f1e4a;
    --bg-2: #172a64;
    --surface: #1f3275;
    --surface-2: #2a4291;
    --border: rgba(255,255,255,0.10);
    --ink: #f4f6ff;
    --ink-2: #c1cae6;
    --ink-3: #8e98bf;
    --accent: #62b3ff;
    --accent-2: #8be1ff;
    --accent-deep: #1f5bff;
    --gold: #ffd87a;
    --container: 1120px;
    --radius: 14px;
    --radius-lg: 22px;
}

/* === Layout primitives === */
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    margin: 0 0 12px;
}

h1, h2, h3 {
    margin: 0 0 16px;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
}
h1 { font-size: clamp(34px, 5.6vw, 64px); }
h2 { font-size: clamp(28px, 3.4vw, 42px); }
h3 { font-size: 20px; }

p { margin: 0 0 14px; color: var(--ink-2); }

/* === Top bar === */
.topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: saturate(160%) blur(14px);
    -webkit-backdrop-filter: saturate(160%) blur(14px);
    background: rgba(15, 30, 74, 0.72);
    border-bottom: 1px solid var(--border);
}
.topbar-inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    gap: 24px;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    color: var(--ink);
}
.brand-name { letter-spacing: -0.01em; }
.brand-mark {
    width: 20px;
    height: 20px;
    display: inline-flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 2px 0;
}
.brand-mark-slat {
    height: 3px;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--accent-2), var(--accent));
}
.topnav {
    display: flex;
    gap: 22px;
    margin-left: auto;
    align-items: center;
    color: var(--ink-2);
    font-size: 14px;
    font-weight: 500;
}
.topnav a:hover { color: var(--ink); }
.topnav-github {
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: 999px;
}
.lang-switcher { position: relative; }
.lang-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--ink-2);
    border-radius: 999px;
    font: inherit;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
}
.lang-btn:hover { color: var(--ink); border-color: rgba(255,255,255,0.18); }
.lang-menu {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 6px;
    min-width: 140px;
    box-shadow: 0 18px 40px rgba(0,0,0,0.4);
}
.lang-menu li button {
    width: 100%;
    text-align: left;
    background: transparent;
    border: none;
    color: var(--ink-2);
    padding: 8px 10px;
    border-radius: 8px;
    font: inherit;
    font-size: 14px;
    cursor: pointer;
}
.lang-menu li button:hover { background: var(--surface-2); color: var(--ink); }

/* === Hero === */
.hero { position: relative; overflow: hidden; padding: 80px 0 120px; }
.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(70% 60% at 20% 0%, rgba(98, 179, 255, 0.22), transparent 60%),
        radial-gradient(60% 50% at 80% 10%, rgba(139, 225, 255, 0.16), transparent 60%),
        linear-gradient(180deg, #14275c 0%, #0f1e4a 100%);
}
.hero-glow {
    position: absolute;
    top: 10%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(closest-side, rgba(98, 179, 255, 0.18), transparent);
    filter: blur(20px);
}
.hero-inner {
    position: relative;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
}
.hero-text { max-width: 620px; }
.hero-sub {
    font-size: 18px;
    color: var(--ink-2);
    margin-bottom: 28px;
    max-width: 540px;
}
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 22px; }
.hero-meta {
    font-size: 13px;
    color: var(--ink-3);
}

/* Hero composition: a real window with venetian blinds in the back, the Apple
   Watch app overlaid in the foreground driving them. Both blinds share the
   exact same keyframes / delays so the watch UI visibly causes the window. */
.hero-art {
    display: flex;
    justify-content: center;
    padding-right: 160px; /* room for the watch + crown callout */
    perspective: 1400px;
}
.scene {
    position: relative;
    width: 340px;
    height: 420px;
    transform-style: preserve-3d;
}

/* Real window in the back: a proper casing (frame) with a glass pane recessed
   inside, a vertical mullion splitting the panes, and a chunky window sill at
   the bottom. */
.window-frame {
    position: absolute;
    top: 0;
    left: 0;
    width: 320px;
    height: 380px;
    border-radius: 6px;
    padding: 16px 16px 0;
    background:
        linear-gradient(180deg, #3c4048 0%, #2a2d34 55%, #1f2228 100%);
    box-shadow:
        0 30px 80px rgba(0, 0, 0, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.10),
        inset 0 -1px 0 rgba(0, 0, 0, 0.6),
        0 0 0 1px rgba(0, 0, 0, 0.55);
    overflow: hidden;
    transform: rotateY(6deg) rotateX(2deg) translateZ(-30px);
    transform-origin: left center;
}
.window-frame::before {
    /* very subtle brushed-aluminium stripe along the casing */
    content: "";
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        180deg,
        transparent 0,
        transparent 7px,
        rgba(255, 255, 255, 0.02) 7px,
        rgba(255, 255, 255, 0.02) 8px
    );
    pointer-events: none;
    border-radius: inherit;
}

/* The actual glass pane sits inside the frame */
.window-pane {
    position: relative;
    width: 100%;
    height: 308px;
    border-radius: 2px;
    overflow: hidden;
    box-shadow:
        inset 0 0 0 1px rgba(0, 0, 0, 0.75),
        inset 0 2px 8px rgba(0, 0, 0, 0.45),
        0 1px 0 rgba(255, 255, 255, 0.08);
}
.window-pane::after {
    /* faint diagonal glass sheen */
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        125deg,
        rgba(255, 255, 255, 0.16) 0%,
        rgba(255, 255, 255, 0) 35%,
        rgba(255, 255, 255, 0) 65%,
        rgba(255, 255, 255, 0.06) 100%
    );
    pointer-events: none;
    z-index: 4;
}

/* Window sill — thin chunky band at the bottom, same anthracite as frame */
.window-sill {
    position: absolute;
    left: -8px;
    right: -8px;
    bottom: 0;
    height: 22px;
    background: linear-gradient(180deg, #34373f 0%, #1a1c22 100%);
    border-radius: 3px;
    box-shadow:
        0 8px 18px rgba(0, 0, 0, 0.55),
        inset 0 1px 0 rgba(255, 255, 255, 0.12),
        inset 0 -2px 3px rgba(0, 0, 0, 0.45);
    z-index: 3;
}

/* Horizontal mullion splits the pane visually in two, top/bottom */
.window-mullion {
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    height: 4px;
    background: linear-gradient(180deg, #3a3d44 0%, #1d1f25 100%);
    transform: translateY(-50%);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.08),
        0 0 4px rgba(0, 0, 0, 0.6);
    z-index: 3;
    pointer-events: none;
}

.window-sky {
    position: absolute;
    inset: 0;
    background: var(--sky-grad, linear-gradient(180deg, #6ba7ff 0%, #2c5fc4 100%));
    overflow: hidden;
    transition: background 1.2s ease;
}
/* Time-of-day sky presets — set on .window-sky by setupTimeOfDay() in script.js */
.window-sky.tod-sunrise { --sky-grad: linear-gradient(180deg, #ffb88c 0%, #ff7e5f 45%, #6a82fb 100%); }
.window-sky.tod-day     { --sky-grad: linear-gradient(180deg, #6ba7ff 0%, #2c5fc4 100%); }
.window-sky.tod-sunset  { --sky-grad: linear-gradient(180deg, #f78a5c 0%, #c25b8a 40%, #463076 100%); }
.window-sky.tod-night   { --sky-grad: linear-gradient(180deg, #0c0e2e 0%, #1a1c4a 60%, #25275a 100%); }

.window-sun {
    position: absolute;
    top: var(--sun-y, 18%);
    left: var(--sun-x, 78%);
    transform: translate(-50%, -50%);
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, #fff5c5, #ffd87a 50%, rgba(255, 216, 122, 0) 75%);
    filter: blur(0.4px);
    animation: sunPulse 6s ease-in-out infinite;
    z-index: 1;
    transition: top 1.2s ease, left 1.2s ease, background 1.2s ease;
}
/* Sun morphs into moon at night — pale gray + soft glow, no warm pulse */
.window-sky.tod-night .window-sun {
    background: radial-gradient(circle at 32% 32%, #f5f7ff, #c8ccdc 55%, rgba(200, 204, 220, 0) 78%);
    box-shadow: 0 0 18px rgba(220, 225, 255, 0.35);
    animation: none;
}
/* Stars only at night */
.window-sky.tod-night::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(1px 1px at 18px 32px, rgba(255,255,255,0.9), transparent 60%),
        radial-gradient(1px 1px at 58px 70px, rgba(255,255,255,0.7), transparent 60%),
        radial-gradient(1.5px 1.5px at 92px 48px, rgba(255,255,255,0.95), transparent 60%),
        radial-gradient(1px 1px at 138px 88px, rgba(255,255,255,0.7), transparent 60%),
        radial-gradient(1px 1px at 78px 118px, rgba(255,255,255,0.8), transparent 60%),
        radial-gradient(1.5px 1.5px at 28px 102px, rgba(255,255,255,0.85), transparent 60%),
        radial-gradient(1px 1px at 122px 28px, rgba(255,255,255,0.7), transparent 60%),
        radial-gradient(1px 1px at 168px 60px, rgba(255,255,255,0.75), transparent 60%);
    pointer-events: none;
    z-index: 0;
    animation: twinkle 4s ease-in-out infinite;
}
@keyframes twinkle {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}
@keyframes sunPulse {
    0%, 100% { transform: scale(1); filter: blur(0.4px) brightness(1); }
    50% { transform: scale(1.06); filter: blur(0.6px) brightness(1.18); }
}

/* Drifting clouds — two of them, different sizes, different timing */
.cloud {
    position: absolute;
    background: rgba(255, 255, 255, 0.92);
    border-radius: 50%;
    box-shadow:
        18px 5px 0 -2px rgba(255, 255, 255, 0.92),
        -18px 5px 0 -4px rgba(255, 255, 255, 0.92),
        32px 10px 0 -6px rgba(255, 255, 255, 0.92),
        -32px 10px 0 -8px rgba(255, 255, 255, 0.92),
        0 -4px 0 -3px rgba(255, 255, 255, 0.85);
    z-index: 1;
    opacity: 0.92;
    filter: blur(0.4px);
}
.cloud-1 {
    width: 44px;
    height: 18px;
    top: 50px;
    left: -80px;
    animation: cloudDrift 24s linear infinite;
}
.cloud-2 {
    width: 36px;
    height: 14px;
    top: 130px;
    left: -70px;
    animation: cloudDrift 32s linear infinite;
    animation-delay: -10s;
    opacity: 0.78;
}
@keyframes cloudDrift {
    0% { transform: translateX(0); }
    100% { transform: translateX(380px); }
}

/* Birds — small V-shapes that drift across the sky and bob up + down */
.bird {
    position: absolute;
    width: 22px;
    height: 10px;
    z-index: 2;
    overflow: visible;
}
.bird path {
    animation: birdFlap 0.45s ease-in-out infinite;
    transform-origin: 50% 50%;
}
.bird-1 {
    top: 70px;
    left: -30px;
    animation: birdsFly1 16s linear infinite;
}
.bird-2 {
    width: 16px;
    height: 8px;
    top: 95px;
    left: -40px;
    animation: birdsFly2 20s linear infinite;
    animation-delay: -5s;
}
.bird-2 path { animation-duration: 0.55s; }

@keyframes birdsFly1 {
    0%   { transform: translate(0, 0); }
    50%  { transform: translate(160px, -12px); }
    100% { transform: translate(330px, -8px); }
}
@keyframes birdsFly2 {
    0%   { transform: translate(0, 0); }
    50%  { transform: translate(180px, 14px); }
    100% { transform: translate(340px, 6px); }
}
@keyframes birdFlap {
    0%, 100% { transform: scaleY(1); }
    50% { transform: scaleY(0.4); }
}

.blind {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    gap: 0;
    pointer-events: none;
    z-index: 2;
}
.slat {
    flex: 1;
    background: linear-gradient(180deg, #4d5159 0%, #2a2d34 70%, #1e2026 100%);
    border-bottom: 1px solid rgba(0, 0, 0, 0.55);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.10),
        0 1px 0 rgba(0, 0, 0, 0.35);
    transform-origin: center top;
    animation: slatTilt 5s ease-in-out infinite;
    animation-delay: calc(var(--i) * 60ms);
}
/* User-controlled tilt: when scene.interactive is on, the slats follow
   --tilt (0 = open, 100 = closed) instead of the auto-cycle. */
.scene.interactive .slat,
.scene.interactive .mini-slat {
    animation: none !important;
    transform: scaleY(calc(1 - var(--tilt, 50) / 100 * 0.85));
    transition: transform 80ms ease-out;
}
.slat:last-child { border-bottom: none; }

@keyframes slatTilt {
    0%, 100% { transform: scaleY(1) translateZ(0); opacity: 1; }
    25% { transform: scaleY(0.18); opacity: 0.78; }
    50% { transform: scaleY(0.55); opacity: 0.92; }
    75% { transform: scaleY(0.18); opacity: 0.78; }
}

/* Hero watch: reuses the shared device-watch styling (strap + case + screen +
   crown nub from way below in the file) and only adds hero-specific extras:
   3D tilt, floating animation, brighter crown glow + ridge motion. */
.hero-watch {
    position: absolute;
    right: -40px;
    bottom: -10px;
    width: 160px;
    transform: rotateY(-8deg) rotateX(4deg) translateZ(60px);
    transform-origin: right center;
    animation: watchFloat 5s ease-in-out infinite;
    filter: drop-shadow(0 30px 40px rgba(0, 0, 0, 0.55));
    z-index: 3;
}
.hero-watch .watch-case { width: 160px; height: 192px; border-radius: 38px; }
.hero-watch .watch-screen { inset: 10px; border-radius: 30px; }
.hero-watch .watch-strap { width: 110px; height: 30px; }
.hero-watch .watch-crown-nub.hero-crown-nub {
    top: 72px;
    height: 36px;
    width: 12px;
    right: -10px;
    overflow: visible;
    cursor: ns-resize;
    /* Bigger invisible hit area so the crown is comfortably draggable. */
    touch-action: none;
}
.hero-watch .watch-crown-nub.hero-crown-nub::before {
    content: "";
    position: absolute;
    inset: -12px -10px -12px -4px;
}
.hero-watch .watch-crown-nub.hero-crown-nub::after {
    /* Soft blue glow ring that pulses behind the crown to draw the eye. */
    content: "";
    position: absolute;
    inset: -10px;
    border-radius: inherit;
    background: radial-gradient(
        closest-side,
        rgba(98, 179, 255, 0.55),
        rgba(98, 179, 255, 0) 70%
    );
    z-index: -1;
    animation: crownGlow 2.4s ease-in-out infinite;
}
.crown-ridges-overlay {
    position: absolute;
    left: 2px;
    right: 0;
    top: -4px;
    bottom: -4px;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.65) 0,
        rgba(0, 0, 0, 0.65) 1px,
        transparent 1px,
        transparent 4px
    );
    animation: crownSpin 2.4s linear infinite;
}
@keyframes watchFloat {
    0%, 100% { transform: rotateY(-8deg) rotateX(4deg) translateZ(60px) translateY(0); }
    50% { transform: rotateY(-8deg) rotateX(4deg) translateZ(60px) translateY(-6px); }
}
@keyframes crownSpin {
    /* Rolling the ridge texture downward fakes a clockwise rotation when the
       cylinder is viewed from the side. 4px = one ridge cycle. */
    from { transform: translateY(0); }
    to   { transform: translateY(4px); }
}
@keyframes crownGlow {
    0%, 100% { opacity: 0.35; transform: scale(1); }
    50% { opacity: 0.95; transform: scale(1.18); }
}

/* Tiny app UI inside the watch screen: brand label, mini blind that mirrors
   the big window, and live readout chips. */
.mini-ui {
    position: absolute;
    inset: 14px 10px 10px;
    display: flex;
    flex-direction: column;
    gap: 5px;
    color: #fff;
    font: 600 9px/1 -apple-system, BlinkMacSystemFont, "SF Pro Display", system-ui, sans-serif;
}
.mini-brand {
    text-align: center;
    font-size: 8px;
    letter-spacing: 0.08em;
    color: rgba(255, 255, 255, 0.55);
    text-transform: uppercase;
}
.mini-blind {
    flex: 1;
    border-radius: 8px;
    background: linear-gradient(180deg, #4a8cff 0%, #1f4dab 100%);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}
.mini-blind::before {
    /* tiny sun glint inside the mini scene */
    content: "";
    position: absolute;
    top: 5px;
    right: 8px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, #fff5c5, #ffd87a 55%, rgba(255, 216, 122, 0) 75%);
    animation: sunPulse 6s ease-in-out infinite;
}
.mini-slat {
    flex: 1;
    background: linear-gradient(180deg, rgba(232, 236, 248, 0.94), rgba(170, 180, 210, 0.92));
    border-bottom: 0.5px solid rgba(20, 30, 60, 0.25);
    transform-origin: center top;
    animation: slatTilt 5s ease-in-out infinite;
    animation-delay: calc(var(--i) * 60ms);
}
.mini-slat:last-child { border-bottom: none; }
.mini-chips {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2px;
    color: rgba(255, 255, 255, 0.75);
    font-variant-numeric: tabular-nums;
}
.mini-chip {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    font-size: 9px;
}
.mini-chip b {
    font-weight: 700;
    color: #fff;
    animation: chipPulse 5s ease-in-out infinite;
}
.mini-tilt { animation-delay: 1.2s !important; }
.mini-dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent-2);
    box-shadow: 0 0 6px rgba(139, 225, 255, 0.7);
    animation: dotPulse 1.8s ease-in-out infinite;
}
@keyframes chipPulse {
    0%, 100% { opacity: 0.55; }
    50% { opacity: 1; }
}
@keyframes dotPulse {
    0%, 100% { opacity: 0.35; transform: scale(0.85); }
    50% { opacity: 1; transform: scale(1.15); }
}

/* Callout is positioned RELATIVE TO THE CROWN NUB itself — that way the
   horizontal connector line always points exactly at the cylinder, regardless
   of watch size or rotation. */
.crown-callout {
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%);
    margin-left: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-2);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    pointer-events: none;
    white-space: nowrap;
    text-shadow: 0 1px 6px rgba(11, 15, 36, 0.6);
    z-index: 10;
}
.crown-callout::before {
    /* Connector line from the crown to the label. */
    content: "";
    display: block;
    width: 18px;
    height: 1.5px;
    background: linear-gradient(90deg, var(--accent-2), rgba(139, 225, 255, 0));
    border-radius: 1px;
    margin-left: -14px; /* eat the gap and start right at the crown */
}
.crown-arrow {
    display: inline-block;
    font-size: 18px;
    line-height: 1;
    animation: crownArrowSpin 2.4s linear infinite;
    transform-origin: 50% 55%;
}
.crown-label { white-space: nowrap; }
@keyframes crownArrowSpin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 11px 22px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 15px;
    border: 1px solid transparent;
    transition: transform 120ms ease, background 200ms ease, border-color 200ms ease;
    cursor: pointer;
}
.btn-lg { padding: 14px 28px; font-size: 16px; }
.btn-primary {
    background: linear-gradient(180deg, var(--accent), var(--accent-deep));
    color: #fff;
    box-shadow: 0 12px 30px -10px rgba(31, 91, 255, 0.55), inset 0 1px 0 rgba(255,255,255,0.18);
}
.btn-primary:hover { transform: translateY(-1px); }
.btn-ghost {
    border-color: var(--border);
    color: var(--ink);
}
.btn-ghost:hover { border-color: rgba(255,255,255,0.18); background: rgba(255,255,255,0.04); }

/* === Sections === */
section { padding: 84px 0; }

/* Features */
.features { background: linear-gradient(180deg, #0f1e4a 0%, #142557 100%); }
.feature-grid {
    margin-top: 36px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}
.feature-card {
    padding: 28px;
    background: linear-gradient(180deg, var(--surface), var(--bg-2));
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}
.feature-card::after {
    content: "";
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    pointer-events: none;
    background: linear-gradient(135deg, rgba(98, 179, 255, 0.16), transparent 35%);
    opacity: 0;
    transition: opacity 200ms ease;
}
.feature-card:hover::after { opacity: 1; }
.feature-icon {
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: rgba(98, 179, 255, 0.14);
    color: var(--accent-2);
    margin-bottom: 16px;
}
.feature-icon svg { width: 22px; height: 22px; stroke-linecap: round; stroke-linejoin: round; }
.feature-card h3 { color: var(--ink); }
.feature-card p { color: var(--ink-2); margin: 0; }

/* Showcase */
.showcase { background: var(--bg); }
.showcase .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.showcase-art {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 460px;
    perspective: 1400px;
}
.showcase-art .device-watch {
    width: 200px;
    margin: 0;
    position: absolute;
    transition: transform 200ms ease;
}
.showcase-art .watch-case { width: 200px; height: 240px; border-radius: 48px; }
.showcase-art .watch-screen { inset: 12px; border-radius: 38px; }
.showcase-art .watch-strap { width: 138px; height: 36px; }
.showcase-art .watch-crown-nub { top: 88px; height: 40px; width: 13px; right: -10px; }
.showcase-art .watch-a {
    /* py-a is driven by scroll (set in script.js); falls back to 0. */
    transform: translateX(-110px) translateY(var(--py-a, 0px)) rotate(-7deg);
    z-index: 1;
    will-change: transform;
}
.showcase-art .watch-b {
    transform: translateX(110px) translateY(var(--py-b, 0px)) rotate(7deg) translateZ(40px);
    z-index: 2;
    filter: drop-shadow(0 30px 50px rgba(0, 0, 0, 0.5));
    will-change: transform;
}

/* === CSS mock UI inside the watch screens === */
.mock-watch {
    position: absolute;
    inset: 0;
    padding: 14px 10px 10px;
    color: #fff;
    font: 600 10px/1.2 -apple-system, BlinkMacSystemFont, "SF Pro Display", system-ui, sans-serif;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.mock-statusbar {
    text-align: center;
    line-height: 1.1;
}
.mock-time { display: block; font-size: 11px; font-weight: 700; color: #fff; }
.mock-title { display: block; font-size: 10px; font-weight: 600; color: var(--accent-2); margin-top: 1px; }

/* List variant */
.mock-list .mock-rows {
    display: flex;
    flex-direction: column;
    gap: 3px;
    margin-top: 2px;
}
.mock-list .mock-row {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 7px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    font-size: 10px;
    font-weight: 600;
}
.mock-list .dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    flex-shrink: 0;
}
.dot-anth { background: linear-gradient(180deg, #4d5159, #2a2d34); }
.dot-beige { background: linear-gradient(180deg, #d2c39a, #a59377); }
.mock-list .mock-tiles {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 4px;
    margin-top: auto;
}
.mock-tile {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 3px;
    height: 28px;
    padding: 0 8px;
    border-radius: 8px;
    font-size: 9px;
    font-weight: 700;
    color: #fff;
}
.mock-tile-scene {
    background: linear-gradient(180deg, var(--accent), var(--accent-deep));
}
.mock-tile-icon { font-size: 11px; }
.mock-tile-my {
    background: linear-gradient(180deg, #ffd87a, #d39b00);
    color: rgba(0, 0, 0, 0.85);
    width: 28px;
    padding: 0;
    font-size: 13px;
}
.mock-tile-stop {
    background: linear-gradient(180deg, #ff5b5b, #b91d1d);
    color: #fff;
    width: 28px;
    padding: 0;
    font-size: 11px;
}

/* Detail variant */
.mock-detail .mock-blind {
    flex: 1;
    margin-top: 4px;
    border-radius: 6px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    background: linear-gradient(180deg, #4a8cff 0%, #1f4dab 100%);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}
.mock-detail .mock-slat {
    flex: 1;
    background: linear-gradient(180deg, #4d5159 0%, #2a2d34 70%, #1e2026 100%);
    border-bottom: 0.5px solid rgba(0, 0, 0, 0.55);
}
.mock-detail .mock-slat:last-child { border-bottom: none; }
.mock-bottom-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 4px;
    padding: 0 2px;
}
.mock-chip {
    font-size: 10px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.85);
    font-variant-numeric: tabular-nums;
}
.mock-star {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 18px;
    border-radius: 9px;
    background: rgba(var(--accent-rgb, 98, 179, 255), 0.18);
    color: var(--accent-2);
    font-size: 12px;
}

/* How it works */
.howto { background: linear-gradient(180deg, #142557 0%, #0f1e4a 100%); }
.howto-steps {
    margin-top: 36px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    counter-reset: step;
}
.howto-steps li {
    padding: 28px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}
.howto-steps li > h3,
.howto-steps li > p { width: 100%; }
.howto-steps li > p { text-align: center; }

/* All three howto images render at the same fixed size and aspect ratio so the
   step number badges + headings line up across the row regardless of what's in
   the image. User-supplied artwork lives in assets/step{1,2,3}-{lang}.png. */
.howto-img {
    width: 100%;
    max-width: 280px;
    aspect-ratio: 1 / 1;
    height: auto;
    object-fit: cover;
    display: block;
    margin: 0 auto 20px;
    border-radius: 16px;
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
}
.step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 12px;
    background: linear-gradient(180deg, var(--accent), var(--accent-deep));
    color: #fff;
    font-weight: 700;
    margin-bottom: 14px;
}

/* === Device frames (iPhone + Apple Watch) ===
   Every step card reserves the same vertical area for the device render so
   the step number + heading line up across the row regardless of which device
   is shown. */
.device-frame {
    margin: 0 auto 20px;
    min-height: 360px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: center;
}

/* iPhone — top-half slab with fixed dimensions. Chassis has rounded corners
   only on top; bottom is flat so it reads as "phone peeking up from below the
   card edge". Image is object-fit:cover with top alignment to show the login
   header + form, never the dead whitespace below it. */
.device-iphone {
    position: relative;
    width: 158px;
    height: 232px;
    background: linear-gradient(140deg, #2a2d34 0%, #14161f 100%);
    border-radius: 28px 28px 0 0;
    padding: 8px 8px 0;
    box-shadow:
        0 24px 50px rgba(0, 0, 0, 0.55),
        inset 0 1px 0 rgba(255, 255, 255, 0.12),
        0 0 0 1px rgba(255, 255, 255, 0.04);
    box-sizing: border-box;
}
.iphone-island { display: none; }

.iphone-screen {
    display: block;
    width: 100%;
    height: 100%;
    background: #f1f2f6;
    border-radius: 22px 22px 0 0;
    overflow: hidden;
    position: relative;
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.4);
}
.iphone-screen img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    display: block;
}

/* Apple Watch — case with two strap segments */
.device-watch {
    width: 180px;
}
.watch-strap {
    display: block;
    width: 124px;
    height: 32px;
    background:
        linear-gradient(180deg, #34373f 0%, #1d1f25 100%),
        repeating-linear-gradient(
            90deg,
            rgba(0, 0, 0, 0.18) 0 1px,
            transparent 1px 4px
        );
    background-blend-mode: overlay;
    border-radius: 8px;
    position: relative;
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.08),
        inset 0 -1px 0 rgba(0, 0, 0, 0.5);
}
.watch-strap::before {
    content: "";
    position: absolute;
    inset: 5px 10px;
    border: 1px dashed rgba(0, 0, 0, 0.45);
    border-radius: 3px;
    pointer-events: none;
}
.watch-strap-top {
    border-radius: 8px 8px 3px 3px;
}
.watch-strap-bottom {
    border-radius: 3px 3px 8px 8px;
}
.watch-case {
    position: relative;
    display: block;
    width: 180px;
    height: 216px;
    margin: -8px 0;
    background: linear-gradient(140deg, #2e313d 0%, #14161f 100%);
    border-radius: 44px;
    box-shadow:
        0 24px 48px rgba(0, 0, 0, 0.55),
        inset 0 1px 0 rgba(255, 255, 255, 0.16),
        inset 0 -1px 0 rgba(0, 0, 0, 0.55),
        0 0 0 1px rgba(255, 255, 255, 0.04);
    z-index: 2;
}
.watch-screen {
    position: absolute;
    inset: 10px;
    background: #000;
    border-radius: 34px;
    overflow: hidden;
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.7);
}
.watch-screen img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.watch-crown-nub {
    position: absolute;
    right: -10px;
    top: 78px;
    width: 12px;
    height: 36px;
    background: linear-gradient(
        90deg,
        #2a2c34 0%,
        #6a6d7e 50%,
        #2a2c34 100%
    );
    border-radius: 2px 6px 6px 2px;
    box-shadow:
        0 2px 4px rgba(0, 0, 0, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
}
.watch-crown-nub::before {
    content: "";
    position: absolute;
    inset: 0 0 0 2px;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.55) 0 1px,
        transparent 1px 3px
    );
    border-radius: inherit;
}

/* FAQ */
.faq { background: var(--bg); }
.faq-list {
    margin-top: 28px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.faq-list details {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 18px;
}
.faq-list summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--ink);
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
    content: "+";
    font-size: 22px;
    color: var(--ink-3);
    transition: transform 160ms ease;
}
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p {
    margin: 10px 0 0;
    color: var(--ink-2);
}

/* CTA */
.cta {
    background:
        radial-gradient(80% 70% at 50% 30%, rgba(98, 179, 255, 0.20), transparent 65%),
        linear-gradient(135deg, #2b46a8 0%, #142a6e 100%);
    text-align: center;
}
.cta h2 { font-size: clamp(28px, 3.4vw, 40px); }
.cta-buttons {
    margin-top: 24px;
    display: inline-flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

/* Footer */
.footer {
    padding: 36px 0;
    background: #0b1638;
    border-top: 1px solid var(--border);
}
.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    text-align: center;
}
.footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--ink);
}
.footer-fineprint {
    margin: 0;
    color: var(--ink-3);
    font-size: 12px;
    max-width: 720px;
}

/* === Responsive === */
@media (max-width: 900px) {
    .hero { padding: 56px 0 80px; }
    .hero-inner { grid-template-columns: 1fr; gap: 40px; }
    .hero-art { justify-self: center; }
    .feature-grid { grid-template-columns: 1fr; }
    .showcase .container { grid-template-columns: 1fr; gap: 40px; }
    .howto-steps { grid-template-columns: 1fr; }
    .topnav { display: none; }
    section { padding: 64px 0; }
}

@media (max-width: 560px) {
    .hero-art { padding-right: 100px; }
    .scene { width: 280px; height: 360px; }
    .window-frame { width: 250px; height: 310px; }
    .hero-watch { width: 170px; right: -32px; bottom: -8px; }
    .hero-watch .watch-case { width: 170px; height: 204px; border-radius: 40px; }
    .hero-watch .watch-screen { inset: 10px; border-radius: 32px; }
    .hero-watch .watch-crown-nub.hero-crown-nub { top: 76px; height: 38px; width: 12px; }
    .crown-callout { font-size: 10px; margin-left: 8px; }
    h1 { font-size: 36px; }
}

/* === Reduced motion === */
@media (prefers-reduced-motion: reduce) {
    .slat, .mini-slat { animation: none; transform: scaleY(0.6); }
    .crown-ridges-overlay, .crown-arrow, .hero-watch, .window-sun,
    .mini-chip b, .mini-dot, .mini-blind::before { animation: none; }
}