/* Ki Browser — design system
 * Quiet, premium, on-brand. The page itself should feel like a deep breath.
 * Plain CSS. No build step. */

/* ─── Tokens ─────────────────────────────────────────────────────────── */

:root {
    --ki-ink: #0B1020;
    --ki-ink-soft: #1B2238;
    --ki-paper: #FCFCFD;
    --ki-paper-soft: #F4F5F8;
    --ki-surface: #FFFFFF;
    --ki-muted: #5B6175;
    --ki-muted-soft: #8B92A8;
    --ki-border: #E4E6EC;
    --ki-border-soft: #EFF1F5;
    --ki-accent: #4F46E5;
    --ki-accent-hover: #3730A3;
    --ki-accent-soft: #EEF0FE;
    --ki-watermark: rgba(11, 16, 32, 0.04);
    --ki-card-shadow: 0 1px 2px rgba(11, 16, 32, 0.04), 0 6px 24px rgba(11, 16, 32, 0.04);
    --ki-card-shadow-hover: 0 1px 2px rgba(11, 16, 32, 0.05), 0 12px 36px rgba(11, 16, 32, 0.08);
    --ki-icon-shadow: 0 1px 2px rgba(11, 16, 32, 0.06), 0 14px 48px rgba(11, 16, 32, 0.18);

    /* Type stack. Serif for display copy (Apple's New York on Apple devices,
     * graceful fallback to Georgia / Charter elsewhere); humanist sans for
     * running body. Both are system-installed everywhere, no web fetches.
     *
     * The CJK fallbacks (Hiragino Mincho ProN, Yu Mincho) make sure the
     * kanji 気 picks up Apple's serif Japanese (Mincho) — the cultural
     * equivalent of New York — instead of falling through to the gothic
     * Hiragino Sans default. Browsers walk the stack per-glyph: Latin uses
     * New York; CJK skips the Latin-only fonts and lands on Mincho. */
    --font-display: ui-serif, "New York", "Charter", "Iowan Old Style", Georgia, "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", "Times New Roman", serif;
    --font-body: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", "Segoe UI", Roboto, sans-serif;

    --bs-primary: var(--ki-accent);
    --bs-body-bg: var(--ki-paper);
    --bs-body-color: var(--ki-ink);
    --bs-link-color: var(--ki-accent);
    --bs-link-hover-color: var(--ki-accent-hover);
    --bs-border-color: var(--ki-border);
    --bs-border-color-translucent: var(--ki-border-soft);
    --bs-body-font-family: var(--font-body);
    --bs-font-sans-serif: var(--font-body);
    --bs-font-serif: var(--font-display);
    /* Bootstrap 5.3+ uses these for .text-muted, .text-secondary,
     * .text-body-secondary, .text-body-tertiary, and .text-emphasis.
     * Without these overrides those utilities ignore data-theme. */
    --bs-secondary-color: var(--ki-muted);
    --bs-tertiary-color: var(--ki-muted-soft);
    --bs-secondary-bg: var(--ki-paper-soft);
    --bs-tertiary-bg: var(--ki-paper-soft);
    --bs-emphasis-color: var(--ki-ink);
    --bs-heading-color: var(--ki-ink);
}

[data-theme="dark"] {
    --ki-ink: #ECEFF7;
    --ki-ink-soft: #C5C9DA;
    --ki-paper: #07091A;
    --ki-paper-soft: #0E1228;
    --ki-surface: #11163A;
    --ki-muted: #97A0BC;
    --ki-muted-soft: #6F7795;
    --ki-border: #1F2542;
    --ki-border-soft: #181E37;
    --ki-accent: #8B85FF;
    --ki-accent-hover: #B7B2FF;
    --ki-accent-soft: rgba(139, 133, 255, 0.12);
    --ki-watermark: rgba(236, 239, 247, 0.04);
    --ki-card-shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 28px rgba(0, 0, 0, 0.35);
    --ki-card-shadow-hover: 0 1px 2px rgba(0, 0, 0, 0.5), 0 16px 44px rgba(0, 0, 0, 0.5);
    --ki-icon-shadow: 0 2px 4px rgba(0, 0, 0, 0.5), 0 18px 56px rgba(139, 133, 255, 0.25);

    /* Re-point Bootstrap tokens for dark mode. */
    --bs-body-bg: var(--ki-paper);
    --bs-body-color: var(--ki-ink);
    --bs-link-color: var(--ki-accent);
    --bs-link-hover-color: var(--ki-accent-hover);
    --bs-border-color: var(--ki-border);
    --bs-border-color-translucent: var(--ki-border-soft);
    --bs-secondary-color: var(--ki-muted);
    --bs-tertiary-color: var(--ki-muted-soft);
    --bs-secondary-bg: var(--ki-paper-soft);
    --bs-tertiary-bg: var(--ki-paper-soft);
    --bs-emphasis-color: var(--ki-ink);
    --bs-heading-color: var(--ki-ink);
}

/* Belt-and-suspenders: a few Bootstrap utility classes still hardcode
 * the secondary token at !important. Mirror them explicitly so the
 * theme is never overridden, even if Bootstrap's load order shifts. */
.text-muted,
.text-secondary,
.text-body-secondary {
    color: var(--ki-muted) !important;
}
.text-body-tertiary {
    color: var(--ki-muted-soft) !important;
}

/* Dark mode: Bootstrap's default <hr> renders too faintly. */
hr {
    border-color: var(--ki-border-soft);
    opacity: 1;
}

/* Bootstrap's navbar-toggler-icon is a fixed dark SVG image and
 * disappears against a dark navbar. Switch to a light one in dark mode. */
[data-theme="dark"] .navbar-toggler-icon {
    background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='rgba%28236,239,247,0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
}
[data-theme="dark"] .navbar-toggler {
    border-color: var(--ki-border);
}

/* ─── Base ──────────────────────────────────────────────────────────── */

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    background-color: var(--ki-paper);
    color: var(--ki-ink);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    line-height: 1.55;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    color: var(--ki-ink);
    letter-spacing: -0.015em;
    line-height: 1.12;
    margin: 0;
    font-weight: 600;
}

p { margin: 0; }

a {
    color: var(--ki-accent);
    text-decoration: none;
    transition: color 0.15s ease;
}
a:hover { color: var(--ki-accent-hover); }

.skip-link {
    position: absolute;
    top: 0;
    left: 0;
    background: var(--ki-accent);
    color: white;
    padding: 0.75rem 1rem;
    z-index: 9999;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--ki-muted);
    margin-bottom: 0.6rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.95rem, 3.6vw, 2.75rem);
    font-weight: 600;
    letter-spacing: -0.018em;
    line-height: 1.1;
}

.section-subtitle {
    color: var(--ki-muted);
    font-size: 1.1rem;
    margin-top: 0.6rem;
    max-width: 56ch;
}

.text-link {
    color: var(--ki-muted);
    font-weight: 500;
    transition: color 0.15s;
}
.text-link:hover { color: var(--ki-ink); }

/* ─── Navbar ────────────────────────────────────────────────────────── */

.navbar {
    background-color: rgba(252, 252, 253, 0.72);
    backdrop-filter: saturate(180%) blur(16px);
    -webkit-backdrop-filter: saturate(180%) blur(16px);
    border-bottom: 1px solid var(--ki-border-soft);
    padding: 0.85rem 0;
}
[data-theme="dark"] .navbar {
    background-color: rgba(7, 9, 26, 0.72);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    font-weight: 600;
    color: var(--ki-ink);
}
.navbar-brand:hover { color: var(--ki-ink); }

.brand-icon {
    border-radius: 7px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}

.brand-name {
    font-family: var(--font-display);
    font-size: 1.25rem;
    letter-spacing: -0.005em;
    font-weight: 600;
}

.nav-link {
    color: var(--ki-muted);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.4rem 0.9rem !important;
    transition: color 0.15s;
}
.nav-link:hover { color: var(--ki-ink); }

.theme-toggle {
    background: transparent;
    border: 1px solid var(--ki-border);
    border-radius: 999px;
    width: 38px;
    height: 38px;
    color: var(--ki-muted);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: color 0.15s, border-color 0.15s, background-color 0.15s;
    padding: 0;
}
.theme-toggle:hover {
    color: var(--ki-ink);
    border-color: var(--ki-ink);
    background-color: var(--ki-paper-soft);
}

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

/* ─── Hero ──────────────────────────────────────────────────────────── */

.hero {
    position: relative;
    overflow: hidden;
    padding: 6rem 0 5rem;
    background: linear-gradient(180deg, var(--ki-paper) 0%, var(--ki-paper-soft) 100%);
    border-bottom: 1px solid var(--ki-border-soft);
}

.hero-watermark {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--font-display);
    font-size: clamp(28rem, 60vw, 48rem);
    line-height: 1;
    color: var(--ki-watermark);
    font-weight: 300;
    pointer-events: none;
    user-select: none;
    z-index: 0;
}

.hero-container {
    position: relative;
    z-index: 1;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: 4rem;
    align-items: center;
}

.hero-copy {
    max-width: 36rem;
}

.badge-beta {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--ki-accent-soft);
    color: var(--ki-accent);
    border: 1px solid transparent;
    border-radius: 999px;
    padding: 0.32rem 0.85rem;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    margin-bottom: 1.4rem;
}
.badge-beta::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--ki-accent);
    box-shadow: 0 0 0 4px var(--ki-accent-soft);
}

.hero-wordmark {
    font-family: var(--font-display);
    font-size: clamp(6rem, 15vw, 10.5rem);
    font-weight: 600;
    letter-spacing: -0.035em;
    line-height: 0.95;
    margin-bottom: 1.4rem;
    background: linear-gradient(135deg, var(--ki-ink) 0%, var(--ki-ink-soft) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-lead {
    font-family: var(--font-display);
    font-size: clamp(1.55rem, 2.6vw, 1.95rem);
    font-weight: 500;
    color: var(--ki-ink);
    letter-spacing: -0.012em;
    margin-bottom: 0.85rem;
    line-height: 1.25;
}

.hero-sub {
    font-size: 1.1rem;
    color: var(--ki-muted);
    margin-bottom: 1.6rem;
    max-width: 36rem;
}

.hero-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    margin-bottom: 2rem;
}

.hero-pill {
    background: var(--ki-surface);
    border: 1px solid var(--ki-border);
    border-radius: 999px;
    padding: 0.4rem 0.85rem;
    font-size: 0.85rem;
    color: var(--ki-muted);
    font-weight: 500;
}

.hero-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.25rem;
}

.app-store-link { display: inline-flex; }

.app-store-badge {
    height: 50px;
    transition: transform 0.15s, opacity 0.15s;
}
.app-store-badge:hover { opacity: 0.88; transform: translateY(-1px); }

[data-theme="dark"] .app-store-badge {
    filter: invert(1);
}

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

.hero-icon-frame {
    position: relative;
    width: 280px;
    height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero-icon-frame::before {
    content: "";
    position: absolute;
    inset: -20px;
    background: radial-gradient(circle at center, var(--ki-accent-soft) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
}

.hero-icon {
    position: relative;
    z-index: 1;
    border-radius: 28%;
    box-shadow: var(--ki-icon-shadow);
    animation: float 6s ease-in-out infinite;
}

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

@media (max-width: 880px) {
    .hero { padding: 4rem 0 3rem; }
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    .hero-copy { max-width: none; margin: 0 auto; }
    .hero-pills { justify-content: center; }
    .hero-actions { justify-content: center; }
    .hero-icon-frame { width: 200px; height: 200px; }
    .hero-icon { width: 180px !important; height: 180px !important; }
}

/* ─── Principle section ─────────────────────────────────────────────── */

.principle {
    padding: 6rem 0;
}

.principle-intro {
    text-align: center;
    max-width: 56ch;
    margin: 0 auto 3.5rem;
}
.principle-intro .section-subtitle { margin-left: auto; margin-right: auto; }

.principle-row { row-gap: 2rem; }

.principle-card {
    height: 100%;
    background: transparent;
    padding: 1.5rem 1rem 0;
    text-align: center;
}

.principle-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: var(--ki-accent-soft);
    color: var(--ki-accent);
    margin-bottom: 1.2rem;
}

.principle-card h3 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 0.6rem;
    letter-spacing: -0.012em;
}

.principle-card p {
    color: var(--ki-muted);
    font-size: 0.98rem;
    line-height: 1.6;
}

@media (max-width: 880px) {
    .principle { padding: 4rem 0; }
}

/* ─── Features ──────────────────────────────────────────────────────── */

.features {
    padding: 6rem 0;
    background: var(--ki-paper-soft);
    border-top: 1px solid var(--ki-border-soft);
    border-bottom: 1px solid var(--ki-border-soft);
}

.features-intro {
    text-align: center;
    margin-bottom: 3.5rem;
}

.feature-card {
    height: 100%;
    background: var(--ki-surface);
    border: 1px solid var(--ki-border-soft);
    border-radius: 20px;
    padding: 1.75rem;
    transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
    box-shadow: var(--ki-card-shadow);
}
.feature-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--ki-card-shadow-hover);
    border-color: var(--ki-border);
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--ki-accent-soft);
    color: var(--ki-accent);
    margin-bottom: 1.2rem;
}

.feature-card h5 {
    font-family: var(--font-display);
    font-size: 1.18rem;
    font-weight: 600;
    margin: 0 0 0.5rem;
    letter-spacing: -0.01em;
    color: var(--ki-ink);
}

.feature-card p {
    color: var(--ki-muted);
    font-size: 0.96rem;
    line-height: 1.6;
    margin: 0;
}

@media (max-width: 880px) {
    .features { padding: 4rem 0; }
}

/* ─── CTA ───────────────────────────────────────────────────────────── */

.cta {
    padding: 6rem 0;
    text-align: center;
}

.cta-card {
    max-width: 720px;
    margin: 0 auto;
    background: var(--ki-surface);
    border: 1px solid var(--ki-border);
    border-radius: 28px;
    padding: 3.5rem 2.5rem;
    box-shadow: var(--ki-card-shadow);
    position: relative;
    overflow: hidden;
}
.cta-card::before {
    content: "気";
    position: absolute;
    top: -3rem;
    right: -3rem;
    font-family: var(--font-display);
    font-size: 22rem;
    line-height: 1;
    color: var(--ki-watermark);
    font-weight: 300;
    pointer-events: none;
    user-select: none;
}

.cta-card .section-title {
    margin-bottom: 1rem;
}

.cta-lead {
    color: var(--ki-muted);
    font-size: 1.08rem;
    margin-bottom: 2rem;
    max-width: 48ch;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 880px) {
    .cta { padding: 4rem 0; }
    .cta-card { padding: 2.5rem 1.5rem; }
    .cta-card::before { font-size: 14rem; top: -1.5rem; right: -1.5rem; }
}

/* ─── Long-form pages (privacy, support) ────────────────────────────── */

.legal-content,
.support-content {
    max-width: 760px;
    margin: 0 auto;
    padding: 4rem 0 5rem;
    line-height: 1.7;
}

.legal-content h1,
.support-content h1 {
    font-family: var(--font-display);
    font-size: clamp(2.4rem, 4.4vw, 3.2rem);
    margin-bottom: 0.6rem;
    letter-spacing: -0.02em;
}

.legal-content h2,
.support-content h2 {
    font-family: var(--font-display);
    margin-top: 3rem;
    margin-bottom: 1rem;
    font-size: 1.55rem;
    font-weight: 600;
    letter-spacing: -0.012em;
}

.legal-content p,
.legal-content ul,
.legal-content ol,
.support-content p {
    color: var(--ki-ink);
    font-size: 1.02rem;
}

.legal-content ul,
.legal-content ol { padding-left: 1.5rem; }
.legal-content li { margin-bottom: 0.5rem; }
.legal-content p { margin-bottom: 1rem; }

.last-updated {
    color: var(--ki-muted);
    font-size: 0.9rem;
    margin-bottom: 2.5rem !important;
}

.highlight-box {
    background-color: var(--ki-accent-soft);
    border-left: 3px solid var(--ki-accent);
    padding: 1.1rem 1.4rem;
    border-radius: 12px;
    margin: 2rem 0;
    color: var(--ki-ink);
    line-height: 1.6;
}

/* Support */
.contact-box {
    background: var(--ki-paper-soft);
    border: 1px solid var(--ki-border-soft);
    border-radius: 20px;
    padding: 2.5rem;
    margin-bottom: 3.5rem;
    text-align: center;
}
.contact-box h2 {
    font-size: 1.3rem;
    margin-top: 0;
    margin-bottom: 1rem;
}

.faq-item {
    border-bottom: 1px solid var(--ki-border-soft);
    padding: 1.5rem 0;
}
.faq-item:last-child { border-bottom: none; }
.faq-question {
    font-family: var(--font-display);
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--ki-ink);
    font-size: 1.15rem;
    letter-spacing: -0.008em;
}
.faq-answer {
    color: var(--ki-muted);
    margin-bottom: 0;
}

/* ─── Footer ────────────────────────────────────────────────────────── */

.footer {
    background-color: var(--ki-paper-soft);
    border-top: 1px solid var(--ki-border-soft);
    padding: 3.5rem 0 2.5rem;
    margin-top: 0;
    color: var(--ki-muted);
}
.footer h6 {
    color: var(--ki-ink);
    font-size: 0.92rem;
    font-weight: 600;
    margin-bottom: 1rem;
    letter-spacing: 0.01em;
}
.footer a {
    color: var(--ki-muted);
    transition: color 0.15s;
    font-size: 0.95rem;
}
.footer a:hover {
    color: var(--ki-ink);
    text-decoration: none;
}
.footer hr {
    border-color: var(--ki-border-soft);
    opacity: 1;
    margin: 2rem 0 1.5rem;
}

/* ─── Reduced motion ────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0s !important;
        transition-duration: 0s !important;
    }
}

/* ─── Hero visual: the prismatic app icon, front and centre ─────────── */

.ki-hero-icon {
    position: relative;
    width: 340px; height: 340px;
    display: flex; align-items: center; justify-content: center;
}
.ki-hero-icon::before {
    content: ""; position: absolute; inset: 0;
    background: radial-gradient(circle at center, var(--ki-accent-soft) 0%, transparent 68%);
    border-radius: 50%; z-index: 0;
}
.ki-hero-icon .hero-icon {
    position: relative; z-index: 1; width: 232px; height: 232px;
    border-radius: 26%; box-shadow: var(--ki-icon-shadow);
    animation: float 6s ease-in-out infinite;
}
/* small privacy proof-points orbiting the icon */
.ki-orbit {
    position: absolute; z-index: 2;
    font-family: var(--font-body); font-size: .82rem; font-weight: 600; color: var(--ki-ink);
    background: var(--ki-surface); border: 1px solid var(--ki-border);
    border-radius: 999px; padding: .42rem .85rem;
    box-shadow: var(--ki-card-shadow);
    white-space: nowrap;
    animation: float 6s ease-in-out infinite;
}
.ki-orbit::before {
    content: ""; display: inline-block; width: 7px; height: 7px; border-radius: 50%;
    background: var(--ki-accent); margin-right: .45rem; vertical-align: 1px;
}
.ki-orbit--1 { top: 14%; right: -6%; animation-delay: .4s; }
.ki-orbit--2 { bottom: 20%; left: -10%; animation-delay: 1.2s; }
.ki-orbit--3 { bottom: 6%; right: 6%; animation-delay: 2s; }

@media (max-width: 880px) {
    .ki-hero-icon { width: 280px; height: 280px; }
    .ki-hero-icon .hero-icon { width: 188px; height: 188px; }
    .ki-orbit--1 { right: 0; } .ki-orbit--2 { left: 0; }
}

/* ============================================================
   How it works — scroll-driven privacy walkthrough
   ============================================================ */

/* Reveal primitive (motion.js adds .in-view) */
.motion-on [data-reveal] {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity .7s cubic-bezier(.2,.8,.2,1) var(--d, 0s),
                transform .7s cubic-bezier(.2,.8,.2,1) var(--d, 0s);
}
[data-reveal].in-view { opacity: 1; transform: none; }

.ki-how { padding: 7rem 0; }
.ki-how__kicker {
    font-size: .8rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
    color: var(--ki-accent); margin-bottom: .6rem;
}
.ki-how__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4.5vw, 3rem); font-weight: 600;
    letter-spacing: -0.02em; color: var(--ki-ink); margin: 0;
}
.ki-how__sub {
    color: var(--ki-muted); font-size: 1.12rem; line-height: 1.6;
    max-width: 38rem; margin: 1rem 0 0;
}

/* Scrollytelling scaffold */
.scrolly { position: relative; margin-top: 3.5rem; }
.scrolly-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }
.scrolly-stage {
    position: sticky; top: 14vh;
    height: 64vh; min-height: 460px;
    display: flex; align-items: center; justify-content: center;
}
.stage-device {
    position: absolute;
    transition: opacity .6s cubic-bezier(.2,.8,.2,1), transform .6s cubic-bezier(.2,.8,.2,1);
    pointer-events: none;
}
.motion-on .stage-device { opacity: 0; transform: translateY(28px) scale(.95); }
[data-step="1"] .stage-1, [data-step="2"] .stage-2, [data-step="3"] .stage-3 {
    opacity: 1; transform: none; pointer-events: auto;
}

.scrolly-step {
    min-height: 64vh;
    display: flex; flex-direction: column; justify-content: center;
}
.scrolly-step .loop-num {
    font-family: var(--font-body); font-weight: 800;
    font-size: 2.4rem; letter-spacing: -0.04em;
    color: transparent; -webkit-text-stroke: 1.4px var(--ki-accent);
    margin-bottom: .4rem;
}
.scrolly-step h3 {
    font-size: 1.5rem; font-weight: 700; letter-spacing: -0.02em;
    color: var(--ki-ink); margin: 0 0 .5rem;
}
.scrolly-step p { color: var(--ki-muted); font-size: 1.05rem; line-height: 1.6; max-width: 26rem; margin: 0; }

/* Browser card */
.ki-browser {
    width: min(420px, 92%);
    background: var(--ki-surface);
    border: 1px solid var(--ki-border);
    border-radius: 18px;
    box-shadow: var(--ki-icon-shadow);
    overflow: hidden;
}
.ki-browser__bar {
    display: flex; align-items: center; gap: .4rem;
    padding: .7rem .9rem;
    background: var(--ki-paper-soft);
    border-bottom: 1px solid var(--ki-border);
}
.ki-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--ki-border); }
.ki-dot:nth-child(1) { background: #FF5F57; }
.ki-dot:nth-child(2) { background: #FEBC2E; }
.ki-dot:nth-child(3) { background: #28C840; }
.ki-url {
    margin-left: .5rem; flex: 1;
    font-size: .8rem; color: var(--ki-muted);
    background: var(--ki-surface); border: 1px solid var(--ki-border);
    border-radius: 7px; padding: .25rem .7rem;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.ki-shield {
    display: inline-flex; align-items: center; gap: .25rem;
    color: var(--ki-accent); font-weight: 800; font-size: .82rem;
}
.ki-shield em { font-style: normal; }

.ki-browser__page { padding: 1.5rem 1.4rem 1.8rem; position: relative; min-height: 200px; }
.ki-skeleton {
    display: block; height: 13px; border-radius: 6px;
    background: var(--ki-paper-soft);
    margin-bottom: .85rem;
}
.ki-skeleton--title { height: 22px; width: 70%; background: var(--ki-border); }
.ki-skeleton--short { width: 45%; }

/* stage 1 — trackers trying to attach */
.ki-trackers {
    position: absolute; right: -10px; bottom: 26px;
    display: flex; flex-direction: column; align-items: flex-end; gap: .4rem;
}
.ki-chip {
    font-size: .72rem; font-weight: 600;
    padding: .25rem .6rem; border-radius: 999px;
    background: #FDECEC; color: #C2333A; border: 1px solid #F6C9CB;
    opacity: 0; transform: translateX(14px);
}
[data-theme="dark"] .ki-chip { background: rgba(194,51,58,.16); border-color: rgba(194,51,58,.3); color: #F2A4A8; }
[data-step="1"] .ki-chip { animation: ki-chip-in .5s cubic-bezier(.2,.8,.2,1) forwards; animation-delay: calc(.2s + var(--i) * .16s); }
@keyframes ki-chip-in {
    0% { opacity: 0; transform: translateX(14px); }
    60% { opacity: 1; transform: translateX(0); }
    100% { opacity: 1; transform: translateX(0); }
}

/* stage 2 — clean page + blocked pill */
.ki-blocked-pill {
    position: absolute; right: 16px; bottom: 18px;
    display: inline-flex; align-items: center; gap: .4rem;
    font-size: .78rem; font-weight: 700;
    padding: .4rem .8rem; border-radius: 999px;
    background: var(--ki-accent-soft); color: var(--ki-accent);
    opacity: 0; transform: translateY(10px) scale(.92);
}
[data-step="2"] .ki-blocked-pill { animation: ki-pill-in .5s cubic-bezier(.22,1.6,.36,1) .35s forwards; }
[data-step="2"] .ki-shield em { animation: ki-count .6s ease .1s both; }
@keyframes ki-pill-in { to { opacity: 1; transform: none; } }
@keyframes ki-count { from { opacity: .3; } to { opacity: 1; } }

/* stage 3 — per-site controls sheet */
.ki-sheet { padding: 1.3rem 1.3rem 1.5rem; }
.ki-sheet__title {
    font-size: .78rem; font-weight: 700; letter-spacing: .04em;
    color: var(--ki-muted); text-transform: uppercase; margin-bottom: 1rem;
}
.ki-toggle {
    display: flex; align-items: center; justify-content: space-between;
    padding: .7rem 0; border-bottom: 1px solid var(--ki-border-soft);
    color: var(--ki-ink); font-weight: 500; font-size: .95rem;
}
.ki-toggle:last-child { border-bottom: 0; }
.ki-sw {
    width: 40px; height: 24px; border-radius: 999px;
    background: var(--ki-border); position: relative; flex-shrink: 0;
    transition: background .25s ease;
}
.ki-sw::after {
    content: ""; position: absolute; top: 3px; left: 3px;
    width: 18px; height: 18px; border-radius: 50%; background: #fff;
    box-shadow: 0 1px 3px rgba(0,0,0,.25); transition: transform .25s cubic-bezier(.22,1.6,.36,1);
}
.ki-sw--on { background: var(--ki-accent); }
.ki-sw--on::after { transform: translateX(16px); }
[data-step="3"] .ki-sheet { animation: ki-sheet-in .5s cubic-bezier(.2,.8,.2,1) both; }
@keyframes ki-sheet-in { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }

/* responsive + reduced motion */
@media (max-width: 991px) {
    .scrolly-grid { grid-template-columns: 1fr; gap: 0; }
    /* stage stops being sticky: each device drops inline next to its step */
    .scrolly-stage, .scrolly-steps { display: contents; }
    .stage-device, .motion-on .stage-device {
        position: static; opacity: 1; transform: none;
        margin: 0 auto 1.4rem; pointer-events: auto;
    }
    .stage-1 { order: 1; } .scrolly-step[data-index="1"] { order: 2; }
    .stage-2 { order: 3; } .scrolly-step[data-index="2"] { order: 4; }
    .stage-3 { order: 5; } .scrolly-step[data-index="3"] { order: 6; }
    .scrolly-step { min-height: 0; padding: .25rem 0 2.4rem; opacity: 1; }
    /* mobile draws every stage fully (no scroll-driven swap) */
    .ki-chip, .ki-blocked-pill { opacity: 1 !important; transform: none !important; animation: none !important; }
    .ki-how { padding: 4.5rem 0; }
}
@media (prefers-reduced-motion: reduce) {
    .stage-device { transition: none; }
    .ki-chip, .ki-blocked-pill { opacity: 1; transform: none; animation: none; }
    [data-reveal] { opacity: 1; transform: none; transition: none; }
}

/* ============================================================
   Dark-mode contrast (a11y)
   Accent + accent-soft already flip in lockstep, so the brand
   chips/pills are fine. Two edges: the skip-link (white on the
   lightened accent #8B85FF = 3.04:1, shows on keyboard focus) and
   the latent --ki-muted-soft token (3.96–4.47:1 if ever rendered).
   ============================================================ */
[data-theme="dark"] .skip-link {
    background: var(--ki-accent-hover);
    color: var(--ki-paper);
}
[data-theme="dark"] { --ki-muted-soft: #7E86A4; }

/* ---- Polish pass: active-step sync, count-up, blocked chips ---- */
.ki-count { font-variant-numeric: tabular-nums; }

/* stage 2 — the same trackers, struck out as blocked (top-right, clear of pill) */
.ki-trackers--blocked {
    position: absolute; top: 16px; right: 14px; left: auto; bottom: auto;
    flex-direction: column; align-items: flex-end; gap: .4rem;
}
.ki-trackers--blocked .ki-chip {
    background: var(--ki-paper-soft); color: var(--ki-muted);
    border-color: var(--ki-border);
    text-decoration: line-through; text-decoration-color: var(--ki-muted-soft);
}
[data-theme="dark"] .ki-trackers--blocked .ki-chip {
    background: var(--ki-paper-soft); color: var(--ki-muted); border-color: var(--ki-border);
}
[data-step="2"] .ki-trackers--blocked .ki-chip {
    animation: ki-chip-in .5s cubic-bezier(.2,.8,.2,1) forwards;
    animation-delay: calc(.1s + var(--i) * .12s);
}

/* desktop only — dim inactive steps, light up the active number */
@media (min-width: 992px) {
    .scrolly-step { opacity: .34; transition: opacity .45s ease; }
    [data-step="1"] .scrolly-step[data-index="1"],
    [data-step="2"] .scrolly-step[data-index="2"],
    [data-step="3"] .scrolly-step[data-index="3"] { opacity: 1; }
    [data-step="1"] .scrolly-step[data-index="1"] .loop-num,
    [data-step="2"] .scrolly-step[data-index="2"] .loop-num,
    [data-step="3"] .scrolly-step[data-index="3"] .loop-num {
        color: var(--ki-accent); -webkit-text-stroke: 0;
    }
}