/* ── Design tokens ── */
:root {
    --bg:        #ffffff;
    --surface:   #f8f7fc;
    --text:      #1a1730;
    --muted:     #6b6488;
    --line:      #e8e4f4;
    --primary:   #432e8d;
    --primary-dark: #1c123a;
    --primary-h: #2f1f68;
    --accent:    #744dfe;
    --accent-bg: #f2effc;
    --radius:    12px;
    --max:       1080px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--text);
    background: var(--bg);
    font-family: -apple-system, BlinkMacSystemFont, "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img { max-width: 100%; display: block; }

/* ── Layout ── */
.container { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }

.skip-link {
    position: absolute; left: 16px; top: -48px;
    background: var(--primary); color: #fff;
    padding: 10px 14px; border-radius: var(--radius);
    z-index: 30;
}
.skip-link:focus { top: 16px; }

/* ── Header ── */
.site-header {
    position: sticky; top: 0; z-index: 20;
    background: rgba(255,255,255,0.94);
    border-bottom: 1px solid var(--line);
}
.nav {
    min-height: 68px;
    display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand {
    display: inline-flex; align-items: center; gap: 10px;
    text-decoration: none; font-weight: 800; letter-spacing: 0.02em;
}
.brand-mark {
    width: 40px; height: 40px; border-radius: 10px;
    display: grid; place-items: center;
    background: #fff; padding: 3px;
}
.brand-logo { width: 100%; height: 100%; object-fit: contain; }
.nav-links {
    display: flex; align-items: center; gap: 20px;
    color: var(--muted); font-size: 0.93rem;
}
.nav-links a { text-decoration: none; }
.nav-links a:hover { color: var(--accent); }

/* ── Buttons ── */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    min-height: 46px; padding: 11px 22px;
    border-radius: var(--radius); border: 1px solid transparent;
    font-weight: 700; text-decoration: none;
    transition: background 160ms ease, transform 120ms ease;
    cursor: pointer;
}
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-h); }
.btn-secondary {
    color: var(--primary); background: var(--accent-bg);
    border-color: rgba(67,46,141,0.14);
}
.btn-secondary:hover { background: #e8e2f8; }
.btn-lg { min-height: 52px; padding: 14px 28px; font-size: 1.02rem; }

/* ── Typography ── */
h1 {
    margin: 0;
    font-size: clamp(2.0rem, 4.2vw, 3.2rem);
    line-height: 1.16; letter-spacing: -0.02em;
}
h2 {
    margin: 0 0 12px;
    font-size: clamp(1.6rem, 3.6vw, 2.4rem);
    line-height: 1.2; letter-spacing: -0.02em;
}
h3 { letter-spacing: -0.01em; }
.lead { color: var(--muted); font-size: 1.05rem; margin: 0; }

.section-head { max-width: 680px; margin-bottom: 40px; }
.section-head.center { text-align: center; margin-left: auto; margin-right: auto; }

.eyebrow {
    display: inline-block;
    margin: 0 0 16px;
    color: var(--accent);
    font-size: 0.88rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

/* ── Section rhythm ── */
.section { padding: 96px 0; }
.section-tint { background: var(--surface); }

/* ── Hero (NON-fullscreen) ── */
.hero {
    padding: 120px 0 80px;
    display: flex; align-items: center;
}
.hero-grid {
    display: grid;
    grid-template-columns: 1fr minmax(360px, 1fr);
    gap: 56px;
    align-items: center;
    width: 100%;
}
.hero-sub {
    margin: 20px 0 0;
    color: var(--muted);
    font-size: clamp(1.02rem, 1.8vw, 1.18rem);
    max-width: 44ch;
}
.hero-actions { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 12px; }
.hero-photo {
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--line);
    background: #fff;
}
.hero-photo img { width: 100%; height: auto; display: block; object-fit: contain; }

/* ── How-it-works strip ── */
.steps-strip {
    padding: 56px 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    background: var(--surface);
}
.steps-row {
    display: flex; gap: 24px;
    justify-content: center; flex-wrap: wrap;
}
.step-item {
    display: flex; align-items: center; gap: 12px;
    font-weight: 600; font-size: 0.98rem; color: var(--text);
}
.step-num {
    width: 36px; height: 36px; border-radius: var(--radius);
    display: grid; place-items: center;
    background: var(--primary); color: #fff;
    font-weight: 800; font-size: 0.92rem;
    flex-shrink: 0;
}

/* ── Two-column layouts ── */
.split-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

/* ── Pain point items ── */
.pain-list { display: grid; gap: 16px; margin: 28px 0 0; padding: 0; list-style: none; }
.pain-list li {
    display: grid;
    grid-template-columns: 28px 1fr;
    gap: 14px; align-items: start;
    padding: 18px;
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid var(--line);
}
.pain-icon {
    width: 28px; height: 28px; border-radius: 8px;
    display: grid; place-items: center;
    background: var(--accent-bg); color: var(--accent);
    font-weight: 800; font-size: 0.85rem;
    flex-shrink: 0;
}
.pain-list strong { display: block; margin: 0 0 4px; color: var(--text); }

/* ── Method cards (2x2) ── */
.method-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}
.method-item {
    padding: 24px;
    border-radius: var(--radius);
    background: #fff;
    border: 1px solid var(--line);
}
.method-num {
    display: inline-flex; width: 36px; height: 36px;
    border-radius: 10px;
    align-items: center; justify-content: center;
    background: var(--accent-bg); color: var(--accent);
    font-weight: 800; font-size: 0.9rem;
}
.method-item h3 { margin: 14px 0 6px; font-size: 1.08rem; color: var(--primary); }
.method-item p  { margin: 0; color: var(--muted); font-size: 0.95rem; }

/* ── Photo frames (inline, NON-fullscreen) ── */
.photo-frame {
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--line);
    background: #fff;
}
.photo-frame img { width: 100%; height: auto; display: block; }
.photo-frame.cover img { object-fit: cover; min-height: 480px; }

/* ── FULLSCREEN image-background sections ── */
.screen-bg {
    position: relative;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    background-color: var(--primary-dark); /* base: text can never be white-on-white */
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: #fff;
}
.screen-bg::before {
    content: "";
    position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(28,18,58,0.86), rgba(43,26,96,0.80));
}
.screen-bg > .container { position: relative; z-index: 1; }
.screen-bg .eyebrow { color: #c9b8ff; }
.screen-bg h2 { color: #fff; }
.screen-bg .lead { color: rgba(255,255,255,0.86); }
.screen-bg .panel {
    max-width: 720px;
}
.screen-bg .panel.wide { max-width: 860px; }

/* Fullscreen-section list items (white on photo) */
.screen-list { display: grid; gap: 18px; margin: 28px 0 0; padding: 0; list-style: none; }
.screen-list li {
    display: grid;
    grid-template-columns: 28px 1fr;
    gap: 14px; align-items: start;
    padding: 18px 20px;
    border-radius: var(--radius);
    background: rgba(255,255,255,0.10);
    border: 1px solid rgba(255,255,255,0.18);
    color: #fff;
}
.screen-list .li-num {
    width: 28px; height: 28px; border-radius: 8px;
    display: grid; place-items: center;
    background: rgba(255,255,255,0.92); color: var(--primary);
    font-weight: 800; font-size: 0.85rem; flex-shrink: 0;
}
.screen-list strong { display: block; margin: 0 0 4px; color: #fff; }

/* ── Timeline (used inside fullscreen #why) ── */
.timeline { display: grid; gap: 14px; margin: 28px 0 0; }
.timeline-item {
    display: grid;
    grid-template-columns: 88px 1fr;
    gap: 16px; align-items: start;
    padding: 18px 20px;
    border-radius: var(--radius);
    background: rgba(255,255,255,0.10);
    border: 1px solid rgba(255,255,255,0.18);
    color: #fff;
}
.timeline-day {
    color: #fff; font-weight: 800; font-size: 0.92rem;
    background: rgba(255,255,255,0.18);
    border-radius: 10px; padding: 10px 8px; text-align: center;
}
.timeline-item strong { display: block; margin: 0 0 3px; color: #fff; }

/* ── Results stats (NON-fullscreen) ── */
.stats-row {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
}
.stat-item {
    text-align: center;
    padding: 24px 16px;
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid var(--line);
}
.stat-val {
    font-size: clamp(2.4rem, 5.5vw, 3.0rem);
    font-weight: 900; line-height: 1;
    letter-spacing: -0.03em;
    color: var(--primary);
}
.stat-label { margin-top: 8px; color: var(--muted); font-size: 0.93rem; }
.stat-dir {
    display: inline-block;
    font-size: 1.1rem; font-weight: 800;
    margin-left: 4px;
}
.stat-dir.up   { color: #2d8a4e; }
.stat-dir.down { color: #8a2d4e; }

/* ── Eligibility check list (NON) — also reused white-on-photo via .screen-list ── */
.elig-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}
.check-list { display: grid; gap: 14px; margin: 0; padding: 0; list-style: none; }
.check-list li {
    display: grid;
    grid-template-columns: 24px 1fr;
    gap: 12px; align-items: start;
    padding: 16px 18px;
    border-radius: var(--radius);
    background: #fff;
    border: 1px solid var(--line);
    font-size: 0.96rem;
}
.check-marker {
    width: 24px; height: 24px; border-radius: 6px;
    display: grid; place-items: center;
    background: var(--primary); color: #fff;
    font-weight: 800; font-size: 0.8rem;
    flex-shrink: 0; margin-top: 2px;
}

/* ── FAQ (NON-fullscreen) ── */
.faq-layout {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 48px;
    align-items: start;
}
.faq-list { display: grid; gap: 14px; margin: 0; padding: 0; list-style: none; }
.faq-item {
    padding: 22px 24px;
    border-radius: var(--radius);
    background: #fff;
    border: 1px solid var(--line);
}
.faq-item h3 { margin: 0 0 8px; font-size: 1.08rem; color: var(--primary); }
.faq-item p  { margin: 0; color: var(--muted); font-size: 0.96rem; }

/* ── CTA (FULLSCREEN background) ── */
.cta-screen {
    position: relative;
    min-height: 100dvh;
    display: flex; align-items: center; justify-content: center;
    text-align: center;
    background-size: cover; background-position: center;
    background-color: var(--primary-h);
    background-attachment: fixed;
    color: #fff;
}
.cta-screen::before {
    content: "";
    position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(33,21,74,0.88), rgba(67,46,141,0.84));
}
.cta-screen > .container { position: relative; z-index: 1; }
.cta-inner { max-width: 660px; margin: 0 auto; }
.cta-inner h2 {
    color: #fff; font-size: clamp(1.8rem, 5vw, 2.8rem);
    margin: 0 0 16px;
}
.cta-inner .cta-sub { color: rgba(255,255,255,0.88); font-size: 1.06rem; margin: 0 0 28px; }
.cta-perks {
    display: grid; gap: 10px; margin: 0 0 28px; padding: 0;
    list-style: none; text-align: left; max-width: 500px;
    margin-left: auto; margin-right: auto;
}
.cta-perks li {
    display: grid;
    grid-template-columns: 22px 1fr;
    gap: 10px; align-items: center;
    padding: 12px 16px;
    border-radius: var(--radius);
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.16);
    font-weight: 600; font-size: 0.96rem;
    color: #fff;
}
.cta-perks .perk-icon {
    width: 22px; height: 22px; border-radius: 6px;
    display: grid; place-items: center;
    background: rgba(255,255,255,0.22);
    color: #fff; font-weight: 800; font-size: 0.75rem;
}
.cta-screen .btn-secondary {
    background: #fff; color: var(--primary);
    border-color: rgba(255,255,255,0.4);
}
.cta-screen .btn-secondary:hover { background: #f0edf8; }
.cta-reminder {
    margin-top: 22px;
    color: rgba(255,255,255,0.8);
    font-weight: 600; font-size: 0.93rem;
}

/* ── Footer ── */
.footer { padding: 48px 0; border-top: 1px solid var(--line); background: #fff; color: var(--muted); }
.footer-grid {
    display: grid;
    grid-template-columns: 1.1fr 1.4fr 0.7fr;
    gap: 36px; align-items: start;
}
.footer a { color: var(--primary); text-decoration: none; }
.footer a:hover { color: var(--accent); }
.footer .brand { font-size: 1.05rem; }
.footer .contact-list {
    display: grid; gap: 12px; margin: 18px 0 0; padding: 0; list-style: none;
}
.footer .contact-list li {
    display: grid;
    grid-template-columns: 26px 1fr;
    gap: 10px; align-items: start;
    font-size: 0.93rem;
}
.footer .contact-list .ic {
    display: grid; place-items: center;
    color: var(--accent); font-weight: 700;
}
.footer .contact-list .ic svg { display: block; }
.footer small { display: block; margin-top: 16px; font-size: 0.88rem; }
.footer-map {
    border-radius: var(--radius); overflow: hidden;
    border: 1px solid var(--line);
}
.footer-map iframe { width: 100%; height: 240px; border: 0; display: block; }
.footer-social { display: flex; flex-direction: column; gap: 14px; }
.footer-social .social-title { font-weight: 800; color: var(--text); }
.social-row { display: flex; gap: 10px; }
.social-btn {
    width: 40px; height: 40px; border-radius: 10px;
    display: grid; place-items: center;
    background: #f1f1f4; border: 1px solid var(--line);
    text-decoration: none;
    transition: background 160ms ease, transform 120ms ease;
}
.social-btn img { width: 22px; height: 22px; object-fit: contain; display: block; }
.social-btn:hover { background: #e6e6ec; transform: translateY(-2px); }

/* ── Testimonial carousel ── */
.testimonial-carousel {
    position: relative;
    display: flex; align-items: center;
    margin: 0 auto;
}

/* Collapse gap between results and testimonials (shared tint) */
#testimonials.section { padding-top: 0; }
.carousel-track {
    width: 100%;
    overflow: hidden;
    border-radius: var(--radius);
    background: #000;
}
.carousel-slide {
    display: none;
    flex-direction: column;
}
.carousel-slide.active { display: flex; }
.video-thumb {
    position: relative;
    width: 100%; aspect-ratio: 16/9;
    background-size: cover; background-position: center;
    cursor: pointer;
}
.video-thumb video {
    width: 100%; height: 100%; display: block; object-fit: cover;
}
.play-btn {
    position: absolute; inset: 0;
    display: grid; place-items: center;
    background: rgba(0,0,0,0.28);
    border: none; cursor: pointer;
    color: #fff; opacity: 0.92;
    transition: opacity 160ms ease, transform 120ms ease;
}
.play-btn:hover { opacity: 1; transform: scale(1.06); }
.play-btn.played { display: none; }
.carousel-arrow {
    flex-shrink: 0;
    width: 44px; height: 44px; border-radius: 50%;
    border: 1px solid var(--line); background: #fff;
    color: var(--primary); font-size: 1.6rem;
    display: grid; place-items: center;
    cursor: pointer; line-height: 1;
    transition: background 160ms, transform 120ms;
    z-index: 1;
}
.carousel-arrow:hover { background: var(--accent-bg); }
.carousel-arrow:active { transform: scale(0.94); }
.carousel-prev { margin-right: -22px; }
.carousel-next { margin-left: -22px; }
.carousel-dots {
    display: flex; justify-content: center; gap: 10px;
    margin-top: 18px;
}
.carousel-dot {
    width: 10px; height: 10px; border-radius: 50%;
    border: none; background: var(--line); cursor: pointer;
    padding: 0; transition: background 160ms;
}
.carousel-dot.active { background: var(--primary); }

/* ── Responsive ── */
@media (max-width: 860px) {
    .nav-links { display: none; }
    .hero-grid,
    .split-2,
    .elig-grid,
    .faq-layout { grid-template-columns: 1fr; gap: 32px; }
    .method-grid { grid-template-columns: 1fr; }
    .stats-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-grid { grid-template-columns: 1fr; }
    .timeline-item { grid-template-columns: 1fr; }
    .steps-row { flex-direction: column; align-items: flex-start; gap: 14px; }
    .screen-bg { background-attachment: scroll; }
    .cta-screen { background-attachment: scroll; }
}
@media (max-width: 480px) {
    .container { width: min(100% - 24px, var(--max)); }
    .hero { padding: 88px 0 56px; }
    .section { padding: 64px 0; }
    .stats-row { grid-template-columns: 1fr; }
    .btn { width: 100%; }
    .hero-actions { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { transition: none !important; animation: none !important; }
}