/* ============================================
   喵练 SpotterCat — spottercat.fit
   经典爱马仕配色 · 流光极光 · 文字拆字动画
   ============================================ */

:root {
    --orange: #D75F28;
    --orange-dim: #D75F2818;
    --orange-glow: #D75F2835;
    --brown: #3D2B1F;
    --bg: #110E0B;
    --surface: #181310;
    --card: #1E1915;
    --border: #2A2320;
    --text: #F5EDE5;
    --text-secondary: #A89888;
    --text-dim: #6B5D50;
    --nav-bg: rgba(17, 14, 11, 0.75);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --radius: 12px;
    --radius-sm: 8px;
}

/* Light Mode — 奶油白 */
html.light {
    --bg: #FDF6F0;
    --surface: #F5EDE5;
    --card: #EDE4DB;
    --border: #DDD4CB;
    --text: #1A1210;
    --text-secondary: #443A30;
    --text-dim: #7A6B5D;
    --nav-bg: rgba(253, 246, 240, 0.82);
    --orange-dim: #D75F2810;
    --orange-glow: #D75F281A;
}

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

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    font-weight: 300;
    line-height: 1.6;
    overflow-x: hidden;
    transition: background 0.4s ease, color 0.4s ease;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
img { display: block; max-width: 100%; }

/* ─── Scroll Progress (heartbeat glow) ─── */
#scrollProgress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    width: 0%;
    background: var(--orange);
    z-index: 1000;
    transition: width 0.1s linear;
    box-shadow: 0 0 8px var(--orange-glow), 0 0 2px var(--orange);
    animation: progressPulse 2s ease-in-out infinite;
}
@keyframes progressPulse {
    0%, 100% { box-shadow: 0 0 6px var(--orange-glow), 0 0 2px var(--orange); }
    50% { box-shadow: 0 0 16px var(--orange-glow), 0 0 4px var(--orange); }
}

/* ─── Navigation ─── */
#mainNav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 999;
    padding: 0 24px;
    backdrop-filter: blur(24px) saturate(1.4);
    -webkit-backdrop-filter: blur(24px) saturate(1.4);
    background: var(--nav-bg);
    border-bottom: 1px solid var(--border);
    transition: background 0.4s ease;
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo { display: flex; align-items: center; gap: 10px; }
.nav-icon { width: 32px; height: 32px; border-radius: 8px; }
.nav-brand { font-weight: 600; font-size: 18px; letter-spacing: -0.02em; }

.nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
    font-size: 14px;
    font-weight: 400;
}

.nav-links a:not(.nav-cta) { color: var(--text-secondary); transition: color 0.2s; }
.nav-links a:not(.nav-cta):hover { color: var(--text); }

.nav-cta {
    padding: 8px 20px;
    background: var(--orange);
    color: #fff;
    font-weight: 600;
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.2s;
}
.nav-cta:hover { filter: brightness(1.1); transform: translateY(-1px); }

/* ─── Theme Toggle ─── */
.theme-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    transition: all 0.25s;
}
.theme-btn:hover { border-color: var(--orange); color: var(--orange); }
.theme-btn .icon-moon { display: none; }
html.light .theme-btn .icon-sun { display: none; }
html.light .theme-btn .icon-moon { display: block; }

/* ─── Hero ─── */
#hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 120px 24px 80px;
    overflow: hidden;
}

/* Mesh gradient aurora */
.hero-mesh {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 20% 40%, rgba(215, 95, 40, 0.12) 0%, transparent 60%),
        radial-gradient(ellipse 60% 80% at 80% 30%, rgba(61, 43, 31, 0.15) 0%, transparent 55%),
        radial-gradient(ellipse 90% 50% at 50% 80%, rgba(215, 95, 40, 0.06) 0%, transparent 50%);
    animation: meshDrift 12s ease-in-out infinite alternate;
    pointer-events: none;
}

html.light .hero-mesh {
    background:
        radial-gradient(ellipse 80% 60% at 20% 40%, rgba(215, 95, 40, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse 60% 80% at 80% 30%, rgba(61, 43, 31, 0.06) 0%, transparent 55%),
        radial-gradient(ellipse 90% 50% at 50% 80%, rgba(215, 95, 40, 0.04) 0%, transparent 50%);
}

@keyframes meshDrift {
    0% { transform: scale(1) translate(0, 0); filter: blur(60px); }
    50% { transform: scale(1.1) translate(3%, -2%); filter: blur(70px); }
    100% { transform: scale(1.05) translate(-2%, 3%); filter: blur(65px); }
}

/* Film grain */
.hero-grain {
    position: absolute;
    inset: 0;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 720px;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    border: 1px solid var(--orange-dim);
    background: var(--orange-dim);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    color: var(--orange);
    letter-spacing: 0.02em;
    margin-bottom: 24px;
}

.hero-title {
    font-size: clamp(36px, 6vw, 64px);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
}

/* Vertical lift carousel */
.hero-carousel {
    --line-h: 1.2em;
    display: block;
    height: var(--line-h);
    overflow: hidden;
    position: relative;
}
.carousel-track {
    display: flex;
    flex-direction: column;
    transition: transform 0.7s cubic-bezier(0.22, 1.2, 0.36, 1);
}
.carousel-line {
    display: flex;
    align-items: center;
    justify-content: center;
    height: var(--line-h);
    flex-shrink: 0;
    opacity: 0.2;
    transform: scale(0.95);
    filter: blur(3px);
    transition: opacity 0.6s ease, transform 0.6s ease, filter 0.6s ease;
}
.carousel-line.is-active {
    opacity: 1;
    transform: scale(1);
    filter: blur(0);
}

.hero-sub {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 520px;
    margin: 0 auto 32px;
}

.hero-platforms {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
}

.platform-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 400;
    transition: border-color 0.2s;
}
.platform-badge:hover { border-color: var(--text-dim); }

.hero-cta {
    display: inline-block;
    padding: 14px 36px;
    background: var(--orange);
    color: #fff;
    font-weight: 600;
    font-size: 16px;
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}
.hero-cta::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 12px;
    box-shadow: 0 0 0 0 rgba(215, 95, 40, 0.5);
    animation: ctaPulse 2.5s cubic-bezier(0.4, 0, 0.2, 1) infinite;
    pointer-events: none;
}
@keyframes ctaPulse {
    0% { box-shadow: 0 0 0 0 rgba(215, 95, 40, 0.4); }
    70% { box-shadow: 0 0 0 14px rgba(215, 95, 40, 0); }
    100% { box-shadow: 0 0 0 0 rgba(215, 95, 40, 0); }
}
.hero-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px var(--orange-glow), 0 0 0 1px var(--orange);
}
.hero-cta:hover::after { animation: none; }

/* ─── Reveal animation (used by [data-reveal]) ─── */
[data-reveal] {
    opacity: 0;
    transform: translateY(24px);
    filter: blur(6px);
    transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.9s cubic-bezier(0.16, 1, 0.3, 1),
                filter 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}
[data-reveal].is-revealed {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
}

/* ─── Scroll Hint ─── */
.scroll-hint {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}
.scroll-mouse {
    width: 24px;
    height: 38px;
    border: 2px solid var(--text-dim);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
}
.scroll-dot {
    width: 4px;
    height: 8px;
    background: var(--text-dim);
    border-radius: 2px;
    animation: scrollDown 2s ease-in-out infinite;
}
@keyframes scrollDown {
    0% { transform: translateY(0); opacity: 1; }
    100% { transform: translateY(10px); opacity: 0; }
}

/* ─── Problem Section ─── */
.section-problem {
    padding: 120px 24px;
    max-width: 1200px;
    margin: 0 auto;
}
.problem-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.problem-card {
    position: relative;
    padding: 40px 32px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    overflow: hidden;
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1),
                transform 1s cubic-bezier(0.16, 1, 0.3, 1),
                border-color 0.3s;
}
.problem-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    width: 0%;
    background: var(--orange);
    transition: width 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.3s;
}
.problem-card.is-visible {
    opacity: 1;
    transform: translateY(0);
}
.problem-card.is-visible::after { width: 100%; }
.problem-card:hover { border-color: var(--orange-glow); }

.problem-number {
    display: block;
    font-size: 13px;
    color: var(--orange);
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 0.05em;
}
.problem-card p {
    font-size: 20px;
    font-weight: 400;
    line-height: 1.5;
    letter-spacing: -0.01em;
}

/* ─── Method Section ─── */
#method {
    padding: 160px 24px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 48px;
}

/* Rep counter */
.method-rep {
    display: flex;
    align-items: baseline;
    gap: 4px;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.method-rep.is-visible { opacity: 1; transform: translateY(0); }
.rep-current {
    font-size: 48px;
    font-weight: 700;
    color: var(--orange);
    font-variant-numeric: tabular-nums;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    display: inline-block;
}
.rep-current.bump { transform: scale(1.3); }
.rep-sep { font-size: 32px; font-weight: 300; color: var(--text-dim); }
.rep-total { font-size: 32px; font-weight: 300; color: var(--text-dim); }
.rep-label {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--text-dim);
    margin-left: 8px;
    text-transform: uppercase;
}

.method-inner {
    display: flex;
    gap: 40px;
    align-items: baseline;
}
.method-word {
    font-size: clamp(48px, 10vw, 120px);
    font-weight: 700;
    letter-spacing: -0.04em;
    opacity: 0;
    transform: translateY(40px) scale(0.8);
    filter: blur(12px);
    transition: all 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}
.method-word.is-visible {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0);
}
.method-word:nth-child(1) { color: var(--text-dim); }
.method-word:nth-child(2) { color: var(--text-secondary); }
.method-word:nth-child(3) { color: var(--orange); }

/* ─── Features Section (Apple-style scroll highlight) ─── */
#features {
    padding: 80px 24px 40px;
    max-width: 900px;
    margin: 0 auto;
}
.features-intro {
    text-align: center;
    margin-bottom: 80px;
}
.features-intro h2 {
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.25;
}
.features-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

/* Each feature row */
.feat {
    display: flex;
    align-items: flex-start;
    gap: 32px;
    padding: 48px 0;
    border-top: 1px solid var(--border);
    opacity: 0.2;
    transform: translateY(12px);
    filter: blur(1px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1),
                filter 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.feat:last-child { border-bottom: 1px solid var(--border); }
.feat.is-lit {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
}

/* Number */
.feat-num {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-dim);
    letter-spacing: 0.05em;
    padding-top: 6px;
    flex-shrink: 0;
    width: 32px;
    transition: color 0.6s ease;
}
.feat.is-lit .feat-num { color: var(--orange); }

/* Body */
.feat-body { flex: 1; }
.feat-icon {
    font-size: 36px;
    display: inline-block;
    margin-bottom: 16px;
    transform: scale(0.7);
    opacity: 0;
    transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1),
                opacity 0.6s ease;
}
.feat.is-lit .feat-icon {
    transform: scale(1);
    opacity: 1;
}
.feat-body h3 {
    font-size: clamp(22px, 3vw, 30px);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
    line-height: 1.2;
}
.feat-body p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Orange accent bar on active */
.feat::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 3px;
    height: 0%;
    background: var(--orange);
    transition: height 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.feat.is-lit::before { height: 100%; }
/* Need position relative for the bar */
.feat { position: relative; padding-left: 20px; }

/* ─── What Is / What Is Not ─── */
.section-what-is {
    padding: 120px 24px;
    max-width: 900px;
    margin: 0 auto;
}
.dual-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}
.what-column h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}
.what-is h3 { color: var(--orange); }
.what-isnot h3 { color: var(--text-dim); }

.what-column ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.what-column li {
    font-size: 16px;
    line-height: 1.5;
    padding-left: 28px;
    position: relative;
}
.what-is li::before {
    content: '\2713';
    position: absolute;
    left: 0;
    color: var(--orange);
    font-weight: 700;
}
.what-isnot li { color: var(--text-dim); }
.what-isnot li::before {
    content: '\2715';
    position: absolute;
    left: 0;
    color: var(--border);
    font-weight: 700;
}

/* ─── Install / Download ─── */
.section-install {
    padding: 120px 24px;
    text-align: center;
}
.install-inner { max-width: 600px; margin: 0 auto; }
.install-icon {
    width: 80px;
    height: 80px;
    border-radius: 18px;
    margin: 0 auto 32px;
    animation: iconBreathe 3s ease-in-out infinite;
}
@keyframes iconBreathe {
    0%, 100% { box-shadow: 0 0 0 0 rgba(215, 95, 40, 0.15); }
    50% { box-shadow: 0 0 0 16px rgba(215, 95, 40, 0); }
}
.section-install h2 {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
}
.install-req {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 48px;
}
.install-steps {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 48px;
}
.install-step {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: var(--text-secondary);
}
.step-num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border: 1px solid var(--border);
    border-radius: 50%;
    font-size: 13px;
    font-weight: 600;
    color: var(--orange);
    flex-shrink: 0;
}
.download-btn {
    display: inline-block;
    padding: 16px 48px;
    background: var(--orange);
    color: #fff;
    font-weight: 700;
    font-size: 17px;
    border-radius: 14px;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    margin-bottom: 16px;
    position: relative;
}
.download-btn::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 14px;
    animation: ctaPulse 2.5s cubic-bezier(0.4, 0, 0.2, 1) infinite;
    pointer-events: none;
}
.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px var(--orange-glow), 0 0 0 1px var(--orange);
}
.download-btn:hover::after { animation: none; }
.install-note {
    font-size: 13px;
    color: var(--text-dim);
}

/* ─── FAQ ─── */
.section-faq {
    padding: 80px 24px 120px;
    max-width: 700px;
    margin: 0 auto;
}
.section-faq h2 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 40px;
    letter-spacing: -0.02em;
}
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 1px;
    background: var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}
.faq-item { background: var(--surface); }
.faq-q {
    width: 100%;
    text-align: left;
    padding: 20px 24px;
    font-size: 15px;
    font-weight: 500;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.2s;
}
.faq-q::after {
    content: '+';
    font-size: 20px;
    font-weight: 300;
    color: var(--text-dim);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), color 0.3s;
}
.faq-item.is-open .faq-q::after {
    transform: rotate(45deg);
    color: var(--orange);
}
.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.faq-a p {
    padding: 0 24px 20px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ─── Footer ─── */
footer {
    border-top: 1px solid var(--border);
    padding: 40px 24px;
}
.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.footer-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    font-size: 14px;
}
.footer-icon { width: 24px; height: 24px; border-radius: 6px; }
.footer-links {
    display: flex;
    gap: 24px;
    font-size: 13px;
    color: var(--text-secondary);
}
.footer-links a:hover { color: var(--text); }
.footer-copy { font-size: 12px; color: var(--text-dim); }

/* ─── Back to Top ─── */
#backToTop {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--card);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s;
    z-index: 99;
    color: var(--text-secondary);
}
#backToTop.is-visible { opacity: 1; pointer-events: auto; }
#backToTop:hover { border-color: var(--orange); color: var(--orange); }

/* ─── Responsive ─── */

/* Tablet */
@media (max-width: 768px) {
    /* Nav: hide text links, keep theme + CTA */
    .nav-links a:not(.nav-cta) { display: none; }
    .nav-links { gap: 10px; }

    /* Hero */
    #hero { padding: 100px 20px 60px; }
    .hero-title { font-size: clamp(28px, 7vw, 48px); }
    .hero-carousel { --line-h: 1.3em; }
    .hero-sub { font-size: 16px; margin-bottom: 24px; }
    .hero-cta { padding: 12px 28px; font-size: 15px; }

    /* Problem */
    .section-problem { padding: 80px 20px; }
    .problem-cards { grid-template-columns: 1fr; gap: 16px; }
    .problem-card { padding: 28px 24px; }
    .problem-card p { font-size: 17px; }

    /* Method */
    #method { padding: 100px 20px; min-height: auto; gap: 32px; }
    .method-inner { flex-direction: column; gap: 16px; align-items: center; }
    .method-word { font-size: clamp(40px, 14vw, 80px); }
    .rep-current { font-size: 36px; }
    .rep-sep, .rep-total { font-size: 24px; }

    /* Features */
    #features { padding: 60px 20px 20px; }
    .features-intro { margin-bottom: 48px; }
    .feat { gap: 20px; padding: 36px 0 36px 16px; }
    .feat-body h3 { font-size: 20px; }
    .feat-body p { font-size: 15px; }
    .feat-body p br { display: none; }

    /* What Is */
    .section-what-is { padding: 80px 20px; }
    .dual-grid { grid-template-columns: 1fr; gap: 32px; }

    /* Install */
    .section-install { padding: 80px 20px; }
    .install-steps { flex-direction: column; align-items: center; gap: 16px; }
    .download-btn { padding: 14px 36px; font-size: 16px; }

    /* FAQ */
    .section-faq { padding: 60px 20px 80px; }

    /* Footer */
    .footer-inner { flex-direction: column; gap: 16px; text-align: center; }
}

/* Phone */
@media (max-width: 480px) {
    #hero { padding: 90px 16px 50px; }
    .hero-title { font-size: clamp(24px, 8vw, 36px); }
    .hero-carousel { --line-h: 1.4em; }
    .hero-badge { font-size: 12px; padding: 5px 12px; }
    .hero-sub { font-size: 15px; }
    .hero-platforms { flex-direction: column; align-items: center; gap: 8px; }
    .hero-cta { padding: 12px 24px; font-size: 14px; border-radius: 10px; }

    .method-word { font-size: clamp(36px, 16vw, 64px); }
    .method-inner { gap: 12px; }

    .features-intro h2 { font-size: 22px; }
    .feat { flex-direction: column; gap: 8px; padding: 32px 0 32px 16px; }
    .feat-num { padding-top: 0; }
    .feat-body h3 { font-size: 18px; }
    .feat-body p { font-size: 14px; }
    .what-column h3 { font-size: 20px; }
    .section-install h2 { font-size: 24px; }
    .section-faq h2 { font-size: 22px; }

    .nav-inner { height: 56px; }
    .nav-icon { width: 28px; height: 28px; }
    .nav-brand { font-size: 16px; }
    .nav-cta { padding: 6px 14px; font-size: 13px; }
    .theme-btn { width: 32px; height: 32px; }
    .scroll-hint { display: none; }
}

/* ─── Reduced Motion ─── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    .problem-card { opacity: 1; transform: none; }
    .method-word { opacity: 1; transform: none; filter: none; }
    [data-reveal] { opacity: 1; transform: none; filter: none; }
    .hero-mesh { animation: none; }
    .hero-cta::after, .download-btn::after { animation: none; }
    .install-icon { animation: none; }
    .method-rep { opacity: 1; transform: none; }
    .carousel-line { opacity: 1; transform: none; filter: none; }
    .feat { opacity: 1; transform: none; filter: none; }
    .feat-icon { opacity: 1; transform: none; }
    .feat::before { height: 100%; }
    .carousel-track { transition: none; }
    html { scroll-behavior: auto; }
}