/* =========================================================
   Space Launch — design system
   Dark minimal. Near-black canvas, stepped surfaces,
   hairline borders, one indigo accent.
   ========================================================= */

:root {
    --bg: #050505;
    --bg-deep: #020202;
    --surface: #0d0d0d;
    --surface-2: #141414;
    --surface-3: #1c1c1c;
    --border: rgba(255, 255, 255, 0.06);
    --border-strong: rgba(255, 255, 255, 0.12);
    --text: #f5f5f5;
    --text-2: #a1a1a1;
    --text-3: #737373;
    --accent: #ffffff;
    --accent-strong: #d1d5db;
    --accent-soft: rgba(255, 255, 255, 0.08);
    --accent-glow: rgba(255, 255, 255, 0.15);
    --radius: 16px;
    --radius-sm: 10px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --maxw: 1320px;
    --nav-h: 96px;
}

/* ---------- Reset & base ---------- */

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--nav-h) + 16px);
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

a { color: var(--accent-strong); text-decoration: none; transition: color 0.18s ease; }
a:hover { color: var(--text); }

h1, h2, h3, h4 {
    margin: 0;
    line-height: 1.15;
    letter-spacing: -0.02em;
    font-weight: 650;
}

h2 {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    letter-spacing: -0.03em;
}

h3 { font-size: 1.2rem; letter-spacing: -0.01em; }

p { margin: 0.75rem 0; color: var(--text-2); }

ul { padding-left: 1.25rem; }

::selection { background: var(--accent-soft); color: var(--text); }

/* ---------- Layout utilities ---------- */

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

.section { padding: 5.5rem 0; }

.section-head {
    max-width: 640px;
    margin-bottom: 3rem;
}

.section-head p { font-size: 1.1rem; }

.eyebrow {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 650;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    color: var(--accent-strong);
    margin-bottom: 0.9rem;
}

.gradient-text {
    background: linear-gradient(120deg, var(--text) 0%, var(--text-2) 60%, var(--accent-strong) 130%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ---------- Buttons ---------- */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.72rem 1.35rem;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1.2;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
    white-space: nowrap;
}

.btn:active { transform: translateY(1px); }

.btn-primary {
    background: var(--accent);
    color: var(--bg);
    box-shadow: 0 8px 24px var(--accent-glow);
}

.btn-primary:hover { background: #e5e5e5; color: var(--bg); box-shadow: 0 10px 30px var(--accent-glow); }

.btn-ghost {
    background: rgba(255, 255, 255, 0.03);
    color: var(--text);
    border-color: var(--border-strong);
}

.btn-ghost:hover { background: rgba(255, 255, 255, 0.06); color: var(--text); border-color: rgba(255, 255, 255, 0.2); }

.btn-lg { padding: 0.9rem 1.7rem; font-size: 1.02rem; }

.btn-row { display: flex; flex-wrap: wrap; gap: 0.85rem; }

/* ---------- Badges / chips ---------- */

.chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-2);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.3rem 0.8rem;
}

.chip svg { width: 13px; height: 13px; }

/* ---------- Cards ---------- */

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem;
    transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.card:hover { transform: translateY(-3px); border-color: var(--border-strong); }

/* ---------- Navbar ---------- */

.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--nav-h);
    z-index: 100;
    background: transparent;
    border-bottom: 1px solid transparent;
    transition: background 0.25s ease, border-color 0.25s ease, backdrop-filter 0.25s ease;
}

.nav.scrolled {
    background: rgba(5, 5, 5, 0.78);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-bottom-color: var(--border);
}

.nav-inner {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 1.5rem;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.brand { display: flex; align-items: center; gap: 0.65rem; font-weight: 650; font-size: 1.05rem; color: var(--text); letter-spacing: -0.01em; }

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

.brand-logo { width: 80px; height: 80px; border-radius: 20px; }

.nav-links { display: flex; align-items: center; gap: 1.6rem; }

.nav-links a { color: var(--text-2); font-size: 0.93rem; font-weight: 500; }
.nav-links a:hover { color: var(--text); }

.nav-cta { display: flex; align-items: center; gap: 1rem; }

.nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border-strong);
    border-radius: 8px;
    color: var(--text);
    width: 40px; height: 40px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

/* ---------- Hero ---------- */

.hero {
    position: relative;
    padding: calc(var(--nav-h) + 4.5rem) 0 4.5rem;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-glow {
    position: absolute;
    top: -20%;
    left: 50%;
    transform: translateX(-50%);
    width: 900px;
    height: 620px;
    background: radial-gradient(ellipse at center, var(--accent-glow) 0%, transparent 65%);
    opacity: 0.55;
    filter: blur(40px);
    animation: glowPulse 8s ease-in-out infinite;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(var(--border) 1px, transparent 1px),
        linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 56px 56px;
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, #000 0%, transparent 70%);
    mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, #000 0%, transparent 70%);
    opacity: 0.5;
}

.hero-inner {
    position: relative;
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: clamp(2.4rem, 5.5vw, 3.7rem);
    font-weight: 750;
    letter-spacing: -0.035em;
    line-height: 1.06;
}

.hero-sub { font-size: 1.18rem; color: var(--text-2); max-width: 500px; margin: 1.25rem 0 2rem; }

.hero-stats {
    display: flex;
    gap: 2.25rem;
    margin-top: 2.75rem;
    padding-top: 1.75rem;
    border-top: 1px solid var(--border);
}

.stat-num { font-size: 1.5rem; font-weight: 700; letter-spacing: -0.02em; }
.stat-label { font-size: 0.82rem; color: var(--text-3); margin-top: 0.1rem; }

/* ---------- Phone carousel ---------- */

.phone-wrap { position: relative; width: 100%; max-width: 340px; margin: 0 0 0 auto; perspective: 1200px; }

.phone-halo {
    position: absolute;
    inset: 6% 0;
    background: radial-gradient(ellipse at 50% 40%, var(--accent-glow) 0%, transparent 70%);
    filter: blur(50px);
    opacity: 0.5;
}

.phone {
    position: relative;
    aspect-ratio: 9 / 20;
    border-radius: 48px;
    background: #0a0a0a;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow:
        0 0 0 6px #000,
        0 0 0 7px rgba(255, 255, 255, 0.08),
        0 0 24px 4px rgba(255, 255, 255, 0.14),
        0 0 70px 14px rgba(255, 255, 255, 0.10),
        0 40px 90px rgba(0, 0, 0, 0.55);
    animation: float 7s ease-in-out infinite;
}

.phone::before { /* side buttons */
    content: "";
    position: absolute;
    left: -4px; top: 22%;
    width: 3px; height: 56px;
    background: #1c1c1c;
    border-radius: 2px 0 0 2px;
}

.carousel {
    position: absolute;
    inset: 0;
    background: #050505;
    border-radius: 41px;
    overflow: hidden;
}

.carousel img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transform: scale(0.98);
    will-change: transform, opacity;
    transition:
        transform 0.6s cubic-bezier(0.4, 0, 0.2, 1),
        opacity 0.6s ease;
}

.carousel img.active {
    opacity: 1;
    transform: scale(1);
}

.carousel img.exit {
    opacity: 0;
    transform: scale(0.98);
}

/* ---------- Feature rows ---------- */

.feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    padding: 3rem 0;
}

.feature-row + .feature-row { border-top: 1px solid var(--border); }

.feature-media { position: relative; perspective: 1200px; }

.feature-media .phone {
    max-width: 280px;
    margin: 0 0 0 auto;
    animation: none;
    transform-origin: 50% 100%;
    will-change: transform;
    box-shadow: 0 0 0 5px #000, 0 0 0 6px rgba(255, 255, 255, 0.07), 0 0 24px 4px rgba(255, 255, 255, 0.14), 0 0 70px 14px rgba(255, 255, 255, 0.10), 0 30px 70px rgba(0, 0, 0, 0.5);
    border-radius: 40px;
}

.feature-media .phone img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 34px;
}

.feature-copy h3 { font-size: 1.5rem; margin-bottom: 0.75rem; }
.feature-copy p { font-size: 1.05rem; }

.feature-row--flip .feature-copy { order: 2; }
.feature-row--flip .feature-media { order: 1; }
.feature-row--flip .feature-media .phone { margin: 0 auto 0 0; }

.feature-list { list-style: none; padding: 0; margin: 1.25rem 0 0; }
.feature-list li {
    display: flex;
    gap: 0.6rem;
    align-items: flex-start;
    color: var(--text-2);
    margin-bottom: 0.5rem;
    font-size: 0.98rem;
}

.feature-list li svg { width: 16px; height: 16px; margin-top: 0.2rem; color: var(--accent-strong); flex-shrink: 0; }

/* ---------- Feature grid (cards) ---------- */

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }

.card .icon-box {
    width: 42px; height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 11px;
    background: var(--accent-soft);
    border: 1px solid rgba(255, 255, 255, 0.18);
    margin-bottom: 1rem;
    color: var(--accent-strong);
}

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

.card h3 { margin-bottom: 0.5rem; }
.card p { margin: 0; font-size: 0.95rem; }

/* ---------- Dark emphasis band ---------- */

.band {
    position: relative;
    background: var(--bg-deep);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 5.5rem 0;
    overflow: hidden;
}

.band-glow {
    position: absolute;
    right: -10%;
    bottom: -40%;
    width: 700px;
    height: 700px;
    background: radial-gradient(ellipse at center, var(--accent-glow) 0%, transparent 65%);
    filter: blur(60px);
    pointer-events: none;
}

.band-pages {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 3rem;
}

.page-chip {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.35rem 0.85rem 0.35rem 0.4rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-2);
    transition: border-color 0.25s ease, transform 0.25s ease, color 0.25s ease;
}

.page-chip:hover { border-color: var(--border-strong); color: var(--text); transform: translateY(-2px); }

.page-chip svg {
    width: 32px;
    height: 32px;
    padding: 6px;
    border-radius: 8px;
    background: var(--accent-soft);
    color: var(--accent-strong);
}

.arch-panel {
    position: relative;
    background: var(--bg-deep);
    border: 1px solid var(--border);
    border-radius: 28px;
    padding: 3.5rem 3rem 3rem;
    margin-top: 3.5rem;
    overflow: hidden;
}

.arch-panel .band-glow { right: -6%; bottom: -34%; }

.arch-head {
    margin-bottom: 2.5rem;
}

.arch-head .eyebrow { margin-bottom: 1rem; }

.arch-head h3 {
    font-size: clamp(1.4rem, 2.5vw, 1.8rem);
    letter-spacing: -0.02em;
    margin: 0 0 0.75rem;
}

.arch-head p {
    max-width: 640px;
    color: var(--text-2);
    margin: 0;
}

.band-note {
    text-align: center;
    color: var(--text-3);
    font-size: 0.95rem;
    margin: 1.5rem 0 0;
}

/* Ambient section decor */

.section-glow {
    position: absolute;
    width: 760px;
    height: 760px;
    background: radial-gradient(ellipse at center, var(--accent-glow) 0%, transparent 65%);
    filter: blur(70px);
    opacity: 0.5;
    pointer-events: none;
}

.section-glow--tl { top: -25%; left: -18%; }
.section-glow--tr { top: -25%; right: -18%; }
.section-glow--cc { top: -18%; left: 50%; transform: translateX(-50%); }

#widgets, #focus, #gallery, #pricing, #faq {
    position: relative;
    overflow: hidden;
}

/* ---------- Gallery ---------- */

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
}

.gallery-item {
    position: relative;
    border-radius: 22px;
    overflow: hidden;
    border: 1px solid var(--border);
    aspect-ratio: 9 / 19.5;
    background: var(--surface);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.gallery-item:hover { transform: translateY(-5px); border-color: var(--border-strong); }

.gallery-item img { width: 100%; height: 100%; object-fit: cover; }

.gallery-item .gallery-caption {
    position: absolute;
    inset: auto 0 0 0;
    padding: 2rem 1rem 1rem;
    font-size: 0.85rem;
    color: var(--text);
    background: linear-gradient(transparent, rgba(2, 2, 2, 0.9));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.gallery-item:hover .gallery-caption { opacity: 1; }

/* ---------- FAQ ---------- */

.faq { max-width: 760px; margin: 0 auto; }

.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    margin-bottom: 0.75rem;
    overflow: hidden;
}

.faq-q {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    background: none;
    border: none;
    color: var(--text);
    font: inherit;
    font-weight: 600;
    text-align: left;
    padding: 1.15rem 1.35rem;
    cursor: pointer;
}

.faq-q svg { width: 18px; height: 18px; color: var(--text-3); flex-shrink: 0; transition: transform 0.25s ease; }

.faq-item.open .faq-q svg { transform: rotate(45deg); }

.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }

.faq-a p { padding: 0 1.35rem 1.2rem; margin: 0; }

/* ---------- CTA band ---------- */

.cta-box {
    text-align: center;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, transparent 100%);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 24px;
    padding: 4.5rem 2rem;
}

.cta-box h2 { margin-bottom: 0.75rem; }
.cta-box p { max-width: 480px; margin: 0 auto 2rem; }

/* ---------- Footer ---------- */

.footer {
    border-top: 1px solid var(--border);
    background: var(--bg-deep);
    padding: 3.5rem 0 2.5rem;
    margin-top: 4rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 2rem;
}

.footer h4 { font-size: 0.85rem; color: var(--text); margin-bottom: 0.9rem; }

.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 0.5rem; }
.footer-links a { font-size: 0.92rem; color: var(--text-3); }
.footer-links a:hover { color: var(--text-2); }

.footer-bottom {
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--text-3);
}

/* ---------- Docs layout ---------- */

.docs-wrap {
    display: grid;
    grid-template-columns: 250px 1fr 210px;
    gap: 2.5rem;
    padding-top: calc(var(--nav-h) + 2rem);
    align-items: start;
}

.docs-side {
    position: sticky;
    top: calc(var(--nav-h) + 1.5rem);
    max-height: calc(100vh - var(--nav-h) - 3rem);
    overflow-y: auto;
}

.docs-side .nav-group { margin-bottom: 1.4rem; }

.docs-side .nav-group-title {
    font-size: 0.7rem;
    font-weight: 650;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-3);
    margin-bottom: 0.5rem;
    padding: 0 0.6rem;
}

.docs-side ul { list-style: none; padding: 0; margin: 0; }

.docs-side a {
    display: block;
    padding: 0.38rem 0.6rem;
    font-size: 0.9rem;
    color: var(--text-2);
    border-left: 2px solid transparent;
    border-radius: 0 6px 6px 0;
    transition: color 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.docs-side a:hover { color: var(--text); background: rgba(255, 255, 255, 0.03); }

.docs-side a.active {
    color: var(--accent-strong);
    border-left-color: var(--accent);
    background: var(--accent-soft);
}

.docs-content { min-width: 0; padding-bottom: 4rem; }

.doc-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.25rem;
    margin-top: 1.5rem;
}

.doc-card:first-child { margin-top: 0; }

.doc-card > h2:first-child { font-size: 1.6rem; margin-bottom: 1rem; }

.doc-card h3 { margin-top: 1.75rem; margin-bottom: 0.5rem; }

.doc-card p, .doc-card li { color: var(--text-2); }

.doc-card li { margin-bottom: 0.4rem; }

.doc-card .lead { font-size: 1.08rem; color: var(--text); }

.doc-toc {
    position: sticky;
    top: calc(var(--nav-h) + 1.5rem);
    font-size: 0.82rem;
}

.doc-toc h4 {
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-3);
    margin-bottom: 0.75rem;
}

.doc-toc ul { list-style: none; padding: 0; margin: 0; border-left: 1px solid var(--border); }
.doc-toc a { display: block; padding: 0.3rem 0 0.3rem 1rem; color: var(--text-3); font-size: 0.82rem; border-left: 2px solid transparent; margin-left: -1px; }
.doc-toc a:hover { color: var(--text-2); }
.doc-toc a.active { color: var(--accent-strong); border-left-color: var(--accent); }

.doc-img {
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    margin: 1.25rem 0;
}

.doc-screenshot {
    max-width: 240px;
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 0 4px #000, 0 20px 50px rgba(0, 0, 0, 0.5);
}

.doc-shot-row { display: flex; gap: 1.5rem; flex-wrap: wrap; margin: 1.5rem 0; justify-content: center; }

.doc-shot { text-align: center; }
.doc-shot img { max-width: 200px; border-radius: 22px; border: 1px solid rgba(255, 255, 255, 0.1); box-shadow: 0 0 0 4px #000, 0 16px 40px rgba(0, 0, 0, 0.5); }
.doc-shot span { display: block; margin-top: 0.6rem; font-size: 0.8rem; color: var(--text-3); }

.callout {
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    background: var(--accent-soft);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 1rem 1.25rem;
    margin: 1.25rem 0;
}

.callout p { margin: 0; color: var(--text-2); font-size: 0.95rem; }
.callout strong { color: var(--text); }

.callout.warn { border-left-color: #f59e0b; background: rgba(245, 158, 11, 0.08); }
.callout.danger { border-left-color: #ef4444; background: rgba(239, 68, 68, 0.08); }

.doc-step { display: flex; gap: 1rem; margin: 1rem 0; }
.doc-step-num {
    flex-shrink: 0;
    width: 30px; height: 30px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    background: var(--accent-soft);
    border: 1px solid rgba(255, 255, 255, 0.22);
    color: var(--accent-strong);
    font-weight: 650;
    font-size: 0.9rem;
}

.doc-step p { margin: 0.1rem 0 0; }

kbd {
    font-family: inherit;
    font-size: 0.82em;
    background: var(--surface-2);
    border: 1px solid var(--border-strong);
    border-bottom-width: 2px;
    border-radius: 6px;
    padding: 0.1rem 0.45rem;
    color: var(--text);
}

.doc-prevnext {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 2.5rem;
}

.doc-prevnext a {
    flex: 1;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.9rem 1.1rem;
    font-size: 0.88rem;
    transition: border-color 0.2s ease, background 0.2s ease;
}

.doc-prevnext a:hover { border-color: var(--border-strong); background: var(--surface-2); color: var(--text); }

.doc-prevnext .label { display: block; font-size: 0.72rem; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 0.2rem; }

/* ---------- Privacy / prose page ---------- */

.prose { max-width: 780px; margin: 0 auto; }
.prose h1 { font-size: clamp(2rem, 5vw, 2.8rem); margin-bottom: 0.75rem; }
.prose h2 { font-size: 1.5rem; margin-top: 2.75rem; }
.prose h3 { font-size: 1.15rem; margin-top: 1.75rem; color: var(--text); }
.prose p, .prose li { color: var(--text-2); }

.page-head {
    padding: calc(var(--nav-h) + 4rem) 0 1rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 2.5rem;
}

.page-head .muted { color: var(--text-3); font-size: 0.95rem; }

/* ---------- Reveal animations ---------- */

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.in-view { opacity: 1; transform: none; }

.reveal-d1 { transition-delay: 0.06s; }
.reveal-d2 { transition-delay: 0.12s; }
.reveal-d3 { transition-delay: 0.18s; }
.reveal-d4 { transition-delay: 0.24s; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.45; }
    50% { opacity: 0.7; }
}

/* ---------- Responsive ---------- */

@media (max-width: 1024px) {
    .docs-wrap { grid-template-columns: 210px 1fr; }
    .doc-toc { display: none; }
    .gallery-grid { grid-template-columns: repeat(3, 1fr); }
    .doc-card { padding: 1.75rem; }
}

@media (max-width: 900px) {
    .nav-links { display: none; }
    .nav-toggle { display: flex; }

    .nav-links.open {
        display: flex;
        position: absolute;
        top: var(--nav-h);
        left: 0; right: 0;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
        padding: 1rem 1.5rem;
        background: rgba(5, 5, 5, 0.97);
        border-bottom: 1px solid var(--border);
        -webkit-backdrop-filter: blur(14px);
        backdrop-filter: blur(14px);
    }

    .brand-logo { width: 44px; height: 44px; border-radius: 12px; }
    .nav-inner { padding: 0 1rem; }
    .docs-side { display: none; }
    .doc-card { padding: 1.5rem; }
    .doc-card > h2:first-child { font-size: 1.3rem; }
    .hero { padding: calc(var(--nav-h) + 2rem) 0 2rem; }
    .phone-wrap { max-width: 260px; }

    .hero-inner { grid-template-columns: 1fr; gap: 3rem; }
    .feature-row { grid-template-columns: 1fr; gap: 2rem; }
    .feature-row .feature-media { order: -1; }
    .feature-row--flip .feature-media { order: -1; }
    .feature-row--flip .feature-media .phone { margin: 0 0 0 auto; }
    .grid-3 { grid-template-columns: 1fr; }
    .grid-2 { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .docs-wrap { grid-template-columns: 1fr; }
    .hero-stats { flex-wrap: wrap; gap: 1.5rem; }
    .arch-panel { padding: 2.5rem 1.25rem 2rem; }
}

@media (max-width: 560px) {
    .container { padding: 0 1rem; }
    .doc-card { padding: 1.25rem; }
    .doc-shot img { max-width: 140px; }
    .doc-shot-row { gap: 0.75rem; }
    .hero-stats { gap: 1rem; }
    .stat-num { font-size: 1.2rem; }
    .page-head { padding: calc(var(--nav-h) + 2rem) 0 1rem; }
    .cta-box { padding: 3rem 1.25rem; }
    .doc-prevnext { flex-direction: column; }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 0.75rem; }
    .footer-grid { grid-template-columns: 1fr; }
    .section { padding: 4rem 0; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; }
}