/* PPT Master landing v2 — dark editorial, single accent, modular sections */

:root {
    --bg: #0b0b0d;
    --bg-alt: #101013;
    --surface: #15151a;
    --surface-2: #1b1b21;
    --border: #26262e;
    --border-strong: #33333d;
    --text: #ecedf2;
    --muted: #9a9aa6;
    --muted-2: #74747f;
    --accent: #5b8def;
    --accent-soft: rgba(91, 141, 239, 0.14);
    --accent-line: rgba(91, 141, 239, 0.4);
    --radius: 14px;
    --radius-lg: 20px;
    --container: 1180px;
    --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
        "Microsoft YaHei", sans-serif;
    --mono: "SFMono-Regular", ui-monospace, "JetBrains Mono", Menlo, monospace;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 96px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

code {
    font-family: var(--mono);
    font-size: 0.9em;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1px 6px;
}

kbd {
    font-family: var(--mono);
    font-size: 0.85em;
    background: var(--surface-2);
    border: 1px solid var(--border-strong);
    border-bottom-width: 2px;
    border-radius: 6px;
    padding: 2px 7px;
}

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

.container.narrow {
    max-width: 820px;
}

.skip {
    position: absolute;
    left: -9999px;
    top: 0;
    background: var(--accent);
    color: #fff;
    padding: 10px 16px;
    z-index: 100;
}

.skip:focus {
    left: 12px;
    top: 12px;
}

/* ---------- buttons ---------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid transparent;
    border-radius: 10px;
    font-weight: 550;
    letter-spacing: 0.01em;
    transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
    white-space: nowrap;
}

.btn-sm {
    padding: 8px 14px;
    font-size: 14px;
}

.btn-lg {
    padding: 14px 26px;
    font-size: 16px;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 10px 30px -12px rgba(91, 141, 239, 0.85);
}

.btn-primary:hover {
    background: #6d9af5;
    transform: translateY(-1px);
}

.btn-ghost {
    border-color: var(--border-strong);
    color: var(--text);
    background: rgba(255, 255, 255, 0.02);
}

.btn-ghost:hover {
    border-color: #43434f;
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-1px);
}

.btn:focus-visible,
.segmented button:focus-visible,
a:focus-visible,
summary:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 8px;
}

.link {
    color: var(--accent);
    font-weight: 550;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.link:hover {
    color: #8db0fb;
}

/* ---------- nav ---------- */

.nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(11, 11, 13, 0.72);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.25s ease, background 0.25s ease;
}

.nav.is-stuck {
    border-bottom-color: var(--border);
    background: rgba(11, 11, 13, 0.9);
}

.nav-inner {
    display: flex;
    align-items: center;
    gap: 28px;
    height: 68px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    letter-spacing: -0.01em;
    white-space: nowrap;
}

.brand-mark {
    width: 30px;
    height: 20px;
    color: var(--accent);
}

.nav-links {
    display: flex;
    gap: 24px;
    margin-left: 8px;
    font-size: 14px;
    color: var(--muted);
}

.nav-links a {
    padding: 6px 0;
    border-bottom: 1px solid transparent;
    transition: color 0.18s ease, border-color 0.18s ease;
}

.nav-links a:hover {
    color: var(--text);
    border-bottom-color: var(--accent-line);
}

.nav-actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ---------- hero ---------- */

.hero {
    position: relative;
    padding: 96px 0 72px;
    overflow: hidden;
}

.hero-glow {
    position: absolute;
    inset: -30% 20% 40%;
    background: radial-gradient(ellipse at 50% 0%, rgba(91, 141, 239, 0.22), transparent 62%);
    pointer-events: none;
}

.hero-inner {
    position: relative;
    text-align: center;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.16em;
    color: var(--muted);
    text-transform: uppercase;
}

.eyebrow .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 12px rgba(91, 141, 239, 0.9);
}

.hero-title {
    margin: 22px auto 0;
    max-width: 900px;
    font-size: clamp(30px, 5.4vw, 62px);
    line-height: 1.14;
    letter-spacing: -0.025em;
    font-weight: 650;
    text-wrap: balance;
}

.hero-title em {
    font-style: normal;
    background: linear-gradient(96deg, #8db0fb 12%, var(--accent) 58%, #b9a0ff 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-lead {
    margin: 24px auto 0;
    max-width: 660px;
    color: var(--muted);
    font-size: 17px;
}

.hero-actions {
    margin-top: 34px;
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.facts {
    margin: 46px auto 0;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1px;
    max-width: 760px;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    list-style: none;
}

.facts li {
    background: var(--bg);
    padding: 18px 10px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.facts strong {
    font-size: 22px;
    font-weight: 650;
    letter-spacing: -0.02em;
}

.facts span {
    font-size: 12.5px;
    color: var(--muted-2);
}

/* ---------- deck window mock ---------- */

.deck-window {
    margin: 56px auto 0;
    max-width: 1040px;
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-lg);
    overflow: hidden;
    text-align: left;
    box-shadow: 0 60px 120px -60px rgba(0, 0, 0, 0.95), 0 0 0 1px rgba(255, 255, 255, 0.02) inset;
}

.deck-titlebar {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 11px 16px;
    background: #101015;
    border-bottom: 1px solid var(--border);
    font-size: 12.5px;
    color: var(--muted);
}

.traffic {
    display: inline-flex;
    gap: 6px;
}

.traffic i {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #2f2f38;
}

.traffic i:first-child {
    background: #3a3a45;
}

.deck-filename {
    font-family: var(--mono);
    font-size: 12px;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.deck-flag {
    margin-left: auto;
    font-size: 11.5px;
    color: var(--accent);
    border: 1px solid var(--accent-line);
    background: var(--accent-soft);
    border-radius: 999px;
    padding: 4px 11px;
    white-space: nowrap;
    flex: none;
}

.deck-ribbon {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: nowrap;
    overflow: hidden;
    padding: 9px 14px;
    background: #131318;
    border-bottom: 1px solid var(--border);
    font-size: 12px;
    color: var(--muted-2);
}

.deck-ribbon .tab {
    padding: 3px 10px;
    border-radius: 6px;
}

.deck-ribbon .tab.is-active {
    color: var(--text);
    background: var(--surface-2);
}

.ribbon-sep {
    width: 1px;
    height: 16px;
    background: var(--border);
    margin: 0 6px;
}

.deck-ribbon .tool {
    width: 22px;
    height: 14px;
    border-radius: 4px;
    background: #1e1e25;
}

.deck-body {
    display: grid;
    grid-template-columns: 116px minmax(0, 1fr) 176px;
    gap: 14px;
    padding: 16px;
    background: #0f0f13;
}

.deck-thumbs {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.thumb {
    position: relative;
    aspect-ratio: 16 / 9;
    border-radius: 5px;
    background: #191920;
    border: 1px solid #23232b;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #3d3d47;
    font-size: 11px;
    font-family: var(--mono);
}

.thumb.is-current {
    border-color: var(--accent-line);
    background: #1b2333;
    color: #7d96c9;
}

.deck-canvas {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6px;
    container-type: inline-size;
}

.deck-panel {
    border-left: 1px solid var(--border);
    padding-left: 14px;
    font-size: 11.5px;
    color: var(--muted-2);
}

.panel-title {
    color: var(--text);
    font-size: 12.5px;
    font-weight: 600;
    margin-bottom: 12px;
}

.panel-sub {
    margin: 12px 0 6px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    font-size: 10px;
    color: #5a5a66;
}

.swatches {
    display: flex;
    gap: 6px;
}

.sw {
    width: 20px;
    height: 20px;
    border-radius: 5px;
    background: #2a2a33;
    border: 1px solid #34343f;
}

.sw.is-on {
    background: var(--accent);
    border-color: #86a8f7;
}

.panel-row {
    display: flex;
    justify-content: space-between;
    gap: 6px;
    padding: 5px 8px;
    border-radius: 6px;
    background: #17171d;
    border: 1px solid #22222a;
}

.panel-hint {
    margin-top: 14px;
    color: var(--accent);
    font-size: 11px;
}

/* ---------- slide surface ---------- */

.slide {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #0d1420;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid #2a3446;
    padding: clamp(16px, 3.2cqw, 34px) clamp(20px, 4cqw, 42px);
    color: #e9eefb;
    isolation: isolate;
}

.slide-lines {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(122, 156, 220, 0.14) 1px, transparent 1px),
        linear-gradient(90deg, rgba(122, 156, 220, 0.14) 1px, transparent 1px);
    background-size: 25% 33.333%;
    -webkit-mask-image: radial-gradient(ellipse 120% 100% at 20% 15%, #000 35%, rgba(0, 0, 0, 0.25) 100%);
    mask-image: radial-gradient(ellipse 120% 100% at 20% 15%, #000 35%, rgba(0, 0, 0, 0.25) 100%);
}

.slide-kicker {
    position: relative;
    font-family: var(--mono);
    font-size: clamp(6px, 1.1cqw, 12px);
    letter-spacing: 0.26em;
    color: #7f9dd6;
}

.slide-head {
    position: relative;
    margin-top: clamp(10px, 2.4cqw, 26px);
    font-size: clamp(13px, 5.2cqw, 52px);
    line-height: 1.08;
    letter-spacing: -0.02em;
    font-weight: 600;
    max-width: 72%;
}

.slide-sub {
    position: relative;
    margin-top: clamp(6px, 1.4cqw, 14px);
    font-size: clamp(8px, 1.9cqw, 18px);
    color: #93a4c4;
}

.slide-kpis {
    position: relative;
    margin-top: clamp(14px, 4cqw, 40px);
    display: flex;
    gap: clamp(14px, 3.6cqw, 44px);
}

.slide-kpis span {
    display: inline-flex;
    align-items: baseline;
    gap: 5px;
    font-size: clamp(6px, 1.35cqw, 13px);
    color: #8598b8;
}

.slide-kpis b {
    font-size: clamp(10px, 2.8cqw, 28px);
    font-weight: 620;
    letter-spacing: -0.02em;
    color: #eef2fb;
    font-variant-numeric: tabular-nums;
}

.slide-bars {
    position: absolute;
    right: clamp(20px, 4cqw, 42px);
    bottom: clamp(30px, 6cqw, 58px);
    display: flex;
    align-items: flex-end;
    gap: clamp(6px, 1.2cqw, 12px);
    height: 38%;
}

.slide-bars span {
    width: clamp(6px, 2.2cqw, 22px);
    height: var(--h);
    border-radius: 3px 3px 0 0;
    background: linear-gradient(180deg, var(--accent), rgba(91, 141, 239, 0.35));
    transition: height 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.slide-foot {
    position: absolute;
    left: clamp(20px, 4cqw, 42px);
    bottom: clamp(16px, 3cqw, 26px);
    font-family: var(--mono);
    font-size: clamp(5px, 1cqw, 11px);
    letter-spacing: 0.22em;
    color: #5f7194;
}

/* selection affordance */

.selection {
    position: absolute;
    left: 5.5%;
    top: 12.5%;
    width: 68%;
    height: 19%;
    border: 1px solid var(--accent);
    pointer-events: none;
}

.handle {
    position: absolute;
    width: 7px;
    height: 7px;
    background: #fff;
    border: 1px solid var(--accent);
    border-radius: 1px;
}

.handle:nth-child(1) { left: -4px; top: -4px; }
.handle:nth-child(2) { right: -4px; top: -4px; }
.handle:nth-child(3) { left: -4px; bottom: -4px; }
.handle:nth-child(4) { right: -4px; bottom: -4px; }
.handle:nth-child(5) { left: calc(50% - 4px); top: -4px; }
.handle:nth-child(6) { left: calc(50% - 4px); bottom: -4px; }
.handle:nth-child(7) { top: calc(50% - 4px); left: -4px; }
.handle:nth-child(8) { top: calc(50% - 4px); right: -4px; }

.sel-label {
    position: absolute;
    left: -1px;
    top: calc(100% + 4px);
    background: var(--accent);
    color: #fff;
    font-family: var(--mono);
    font-size: clamp(7px, 1.5cqw, 10px);
    padding: 2px 7px;
    border-radius: 4px;
    white-space: nowrap;
}

.caret {
    position: absolute;
    left: 44%;
    top: 22%;
    width: 1.5px;
    height: 26px;
    background: #fff;
    animation: blink 1.15s steps(2, start) infinite;
}

@keyframes blink {
    to {
        opacity: 0;
    }
}

/* ---------- sections ---------- */

.section {
    padding: 104px 0;
    border-top: 1px solid rgba(38, 38, 46, 0.7);
}

.section-alt {
    background: var(--bg-alt);
}

.section-head {
    max-width: 780px;
    margin-bottom: 46px;
}

.section-head-row {
    max-width: none;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 28px;
}

.section-head-row > div {
    max-width: 620px;
}

.section h2 {
    margin-top: 16px;
    font-size: clamp(26px, 3.4vw, 40px);
    line-height: 1.22;
    letter-spacing: -0.022em;
    font-weight: 640;
    text-wrap: balance;
}

.section-lead {
    margin-top: 16px;
    color: var(--muted);
    font-size: 16.5px;
    text-wrap: pretty;
}

.hint {
    margin-top: 26px;
    color: var(--muted-2);
    font-size: 14.5px;
}

.grid {
    display: grid;
    gap: 18px;
}

.grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.cards {
    margin-top: 56px;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 22px;
    transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

.card:hover {
    border-color: var(--border-strong);
    background: var(--surface-2);
    transform: translateY(-2px);
}

.card h3 {
    font-size: 16.5px;
    font-weight: 600;
    margin-bottom: 10px;
}

.card p {
    color: var(--muted);
    font-size: 14.5px;
}

/* ---------- compare ---------- */

.compare {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
}

.segmented {
    display: inline-flex;
    gap: 4px;
    padding: 4px;
    background: #101014;
    border: 1px solid var(--border);
    border-radius: 10px;
}

.segmented button {
    border: 0;
    background: transparent;
    color: var(--muted);
    font: inherit;
    font-size: 13.5px;
    padding: 8px 16px;
    border-radius: 7px;
    cursor: pointer;
    transition: background 0.18s ease, color 0.18s ease;
}

.segmented button[aria-selected="true"] {
    background: var(--surface-2);
    color: var(--text);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset;
}

.compare-stage {
    margin-top: 18px;
    container-type: inline-size;
}

.slide-compare {
    background: #0e1524;
}

.compare-notes {
    margin-top: 18px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    list-style: none;
}

.note {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 18px;
    opacity: 0.5;
    transition: opacity 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.note strong {
    display: block;
    font-size: 14.5px;
    margin-bottom: 6px;
}

.note p {
    color: var(--muted);
    font-size: 14px;
}

.compare-stage[data-mode="image"] .note-image,
.compare-stage[data-mode="native"] .note-native {
    opacity: 1;
    border-color: var(--border-strong);
    background: var(--surface-2);
}

/* image-mode treatment */

.bitmap-overlay {
    position: absolute;
    inset: 0;
    display: none;
    align-items: flex-end;
    justify-content: space-between;
    padding: clamp(12px, 2.4cqw, 24px) clamp(12px, 2.4cqw, 24px) clamp(46px, 6cqw, 62px);
    background: repeating-conic-gradient(from 0deg, rgba(255, 255, 255, 0.035) 0% 25%, transparent 0% 50%) 0 0 / 6px 6px;
}

.bitmap-tag {
    font-family: var(--mono);
    font-size: clamp(9px, 1.2cqw, 12px);
    color: #cfd6e4;
    background: rgba(9, 12, 18, 0.82);
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 6px;
    padding: 4px 10px;
}

.bitmap-cursor {
    align-self: flex-start;
    font-size: clamp(9px, 1.2cqw, 12px);
    color: #ffb4b4;
    background: rgba(60, 12, 12, 0.78);
    border: 1px solid rgba(255, 120, 120, 0.34);
    border-radius: 6px;
    padding: 4px 10px;
}

.compare-stage[data-mode="image"] .slide-compare {
    filter: grayscale(0.78) contrast(0.82) brightness(0.86);
}

.compare-stage[data-mode="image"] .selection,
.compare-stage[data-mode="image"] .slide-lines {
    opacity: 0;
}

.compare-stage[data-mode="image"] .bitmap-overlay {
    display: flex;
}

.compare-stage[data-mode="native"] .slide-bars span:hover {
    background: linear-gradient(180deg, #b9a0ff, rgba(91, 141, 239, 0.5));
}

/* ---------- steps ---------- */

.steps {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    list-style: none;
    counter-reset: step;
}

.steps li {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px 22px;
}

.steps li::after {
    content: "";
    position: absolute;
    top: 42px;
    right: -18px;
    width: 18px;
    height: 1px;
    background: linear-gradient(90deg, var(--border-strong), transparent);
}

.steps li:last-child::after {
    display: none;
}

.step-no {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--accent);
    letter-spacing: 0.16em;
}

.steps h3 {
    margin: 12px 0 8px;
    font-size: 18px;
    font-weight: 600;
}

.steps p {
    color: var(--muted);
    font-size: 14.5px;
}

/* ---------- gallery ---------- */

.gallery .shot {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform 0.22s ease, border-color 0.22s ease;
}

.gallery .shot:hover {
    transform: translateY(-3px);
    border-color: var(--accent-line);
}

.shot-frame {
    display: block;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #0f0f13;
    border-bottom: 1px solid var(--border);
}

.shot-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: 50% 46%;
    transition: transform 0.4s ease;
}

.shot:hover .shot-frame img {
    transform: scale(1.02);
}

.shot h3 {
    padding: 16px 18px 4px;
    font-size: 15.5px;
    font-weight: 600;
}

.shot p {
    padding: 0 18px 18px;
    color: var(--muted-2);
    font-size: 13.5px;
}

/* ---------- routes ---------- */

.route {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px 26px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.route:hover {
    border-color: var(--border-strong);
}

.route-tag {
    align-self: flex-start;
    font-size: 11.5px;
    letter-spacing: 0.08em;
    color: var(--accent);
    border: 1px solid var(--accent-line);
    background: var(--accent-soft);
    border-radius: 999px;
    padding: 4px 11px;
}

.route h3 {
    font-size: 20px;
    font-weight: 620;
}

.route p {
    color: var(--muted);
    font-size: 15px;
}

.route ul {
    list-style: none;
    display: grid;
    gap: 8px;
    margin: 2px 0 4px;
}

.route ul li {
    position: relative;
    padding-left: 20px;
    font-size: 14.5px;
    color: #c9c9d3;
}

.route ul li::before {
    content: "";
    position: absolute;
    left: 2px;
    top: 9px;
    width: 7px;
    height: 7px;
    border-radius: 2px;
    background: var(--accent);
    opacity: 0.85;
}

.route .link {
    margin-top: auto;
}

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

.chips {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    list-style: none;
}

.chips li {
    border: 1px solid var(--border);
    background: var(--surface);
    border-radius: 999px;
    padding: 10px 18px;
    font-size: 14.5px;
    color: #d5d5de;
    transition: border-color 0.18s ease, color 0.18s ease, transform 0.18s ease;
    cursor: default;
}

.chips li:hover {
    border-color: var(--accent-line);
    color: #fff;
    transform: translateY(-2px);
}

/* ---------- faq ---------- */

.faq {
    display: grid;
    gap: 12px;
}

.faq details {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0 20px;
    transition: border-color 0.2s ease;
}

.faq details[open] {
    border-color: var(--border-strong);
}

.faq summary {
    cursor: pointer;
    list-style: none;
    padding: 18px 28px 18px 0;
    font-size: 16px;
    font-weight: 550;
    position: relative;
}

.faq summary::-webkit-details-marker {
    display: none;
}

.faq summary::after {
    content: "+";
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    color: var(--accent);
    font-size: 20px;
    line-height: 1;
    transition: transform 0.2s ease;
}

.faq details[open] summary::after {
    content: "–";
}

.faq details p {
    color: var(--muted);
    font-size: 15px;
    padding-bottom: 20px;
    max-width: 62ch;
}

/* ---------- cta + footer ---------- */

.cta {
    position: relative;
    padding: 100px 0;
    border-top: 1px solid var(--border);
    overflow: hidden;
}

.cta::before {
    content: "";
    position: absolute;
    inset: -40% 15% 30%;
    background: radial-gradient(ellipse at 50% 50%, rgba(91, 141, 239, 0.2), transparent 62%);
    pointer-events: none;
}

.cta-inner {
    position: relative;
    text-align: center;
}

.cta h2 {
    font-size: clamp(26px, 3.6vw, 42px);
    letter-spacing: -0.022em;
    line-height: 1.2;
    font-weight: 640;
    text-wrap: balance;
}

.cta p {
    margin: 16px auto 0;
    max-width: 560px;
    color: var(--muted);
    font-size: 16.5px;
    text-wrap: pretty;
}

.cta-actions {
    margin-top: 32px;
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-note {
    margin-top: 20px !important;
    font-size: 13.5px !important;
    color: var(--muted-2) !important;
}

.footer {
    border-top: 1px solid var(--border);
    background: var(--bg-alt);
    padding: 40px 0 26px;
}

.footer-inner {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 28px;
}

.footer-brand {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.footer-brand strong {
    font-size: 15px;
}

.footer-brand p {
    color: var(--muted-2);
    font-size: 13.5px;
    margin-top: 2px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 14px;
    color: var(--muted);
}

.footer-links a:hover {
    color: var(--text);
}

.footer-note {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid rgba(38, 38, 46, 0.7);
    display: flex;
    justify-content: space-between;
    gap: 16px;
    color: var(--muted-2);
    font-size: 13px;
}

/* Contact entry — shared by the marketing shell and the SEO/public shell. */
.footer-contact {
    color: var(--muted);
    border-bottom: 1px solid transparent;
    padding-bottom: 1px;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.footer-contact:hover {
    color: var(--text);
    border-bottom-color: var(--accent-line);
}

/* ---------- reveal ---------- */

[data-reveal] {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
}

[data-reveal].is-visible {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    [data-reveal] {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .caret {
        animation: none;
    }

    .btn:hover,
    .card:hover,
    .shot:hover,
    .chips li:hover {
        transform: none;
    }
}

/* ---------- responsive ---------- */

@media (max-width: 1080px) {
    .deck-body {
        grid-template-columns: 92px minmax(0, 1fr) 150px;
    }

    .grid-4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

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

    .deck-panel {
        display: none;
    }

    .deck-body {
        grid-template-columns: 78px minmax(0, 1fr);
    }

    .grid-3 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .section-head-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 18px;
    }
}

@media (max-width: 720px) {
    .hero {
        padding-top: 64px;
    }

    .hero-title br {
        display: none;
    }

    .section {
        padding: 72px 0;
    }

    .facts {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .deck-thumbs {
        display: none;
    }

    .deck-ribbon .tool,
    .deck-ribbon .ribbon-sep {
        display: none;
    }

    .deck-ribbon .tab:nth-child(n + 4) {
        display: none;
    }

    .deck-body {
        grid-template-columns: minmax(0, 1fr);
        padding: 12px;
    }

    .grid-2,
    .grid-3,
    .grid-4,
    .steps,
    .compare-notes {
        grid-template-columns: minmax(0, 1fr);
    }

    .compare-stage[data-mode="image"] .note-image,
    .compare-stage[data-mode="native"] .note-native {
        order: -1;
    }

    .steps li::after {
        display: none;
    }

    .footer-inner {
        flex-direction: column;
    }

    .footer-note {
        flex-direction: column;
    }
}