:root {
    --c-primary:        hsl(16, 100%, 62%);
    --c-primary-dark:   hsl(16, 100%, 48%);
    --c-primary-light:  hsl(16, 100%, 74%);
    --c-primary-tint:   hsl(16, 100%, 96%);
    --c-accent:         hsl(10, 100%, 58%);
    --c-bg:             hsl(20, 30%, 98%);
    --c-surface:        hsl(0, 0%, 100%);
    --c-border:         hsl(20, 20%, 91%);
    --c-text-1:         hsl(210, 28%, 18%);
    --c-text-2:         hsl(210, 16%, 44%);
    --c-text-3:         hsl(210, 12%, 64%);

    --sp-1: 0.25rem;
    --sp-2: 0.5rem;
    --sp-3: 0.75rem;
    --sp-4: 1rem;
    --sp-5: 1.25rem;
    --sp-6: 1.5rem;
    --sp-8: 2rem;
    --sp-10: 2.5rem;
    --sp-12: 3rem;
    --fs-xs:   0.75rem;
    --fs-sm:   0.875rem;
    --fs-base: 1rem;
    --fs-lg:   1.125rem;
    --fs-xl:   1.375rem;
    --fs-2xl:  1.75rem;
    --fs-3xl:  2.25rem;
    --fs-4xl:  3rem;
    --fw-normal:   400;
    --fw-medium:   500;
    --fw-semibold: 600;
    --fw-bold:     700;
    --fw-black:    800;
    --lh-tight:   1.2;
    --lh-snug:    1.4;
    --lh-normal:  1.6;
    --lh-relaxed: 1.75;
    --r-sm:   0.5rem;
    --r-md:   0.875rem;
    --r-lg:   1.25rem;
    --r-xl:   1.75rem;
    --r-full: 9999px;
    --sh-sm:  0 2px 8px -2px hsla(16, 60%, 30%, 0.10);
    --sh-md:  0 6px 20px -4px hsla(16, 60%, 30%, 0.13);
    --sh-lg:  0 16px 40px -8px hsla(16, 60%, 30%, 0.16);
    --sh-warm:0 20px 40px -10px hsla(16, 80%, 50%, 0.22);

    --t-fast: 180ms ease;
    --t-base: 260ms ease;

    --container: 900px;
    --section-pad: var(--sp-10) var(--sp-6);
    --z-sticky: 100;
    --z-modal:  200;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}
body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    font-size: var(--fs-base);
    line-height: var(--lh-normal);
    color: var(--c-text-1);
    background: var(--c-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
input, button, textarea, select { font: inherit; }
p, h1, h2, h3, h4 { overflow-wrap: break-word; }
button { border: none; background: none; cursor: pointer; }

.visually-hidden {
    position: absolute; width: 1px; height: 1px;
    padding: 0; margin: -1px; overflow: hidden;
    clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.skip-link {
    position: absolute; top: -48px; left: 0;
    background: var(--c-primary); color: #fff;
    padding: var(--sp-2) var(--sp-4);
    text-decoration: none; z-index: var(--z-modal);
    border-radius: 0 0 var(--r-sm) 0;
}
.skip-link:focus { top: 0; }
.container {
    width: 100%;
    max-width: var(--container);
    background: var(--c-surface);
    border-radius: 0;
    box-shadow: var(--sh-lg);
    overflow: hidden;
}

.section--white  { background: var(--c-surface); }
.section--tint   { background: var(--c-primary-tint); }
.section--muted  { background: hsl(20, 20%, 97%); }

.section-inner {
    padding: var(--section-pad);
}

.section-header {
    text-align: center;
    margin-bottom: var(--sp-8);
}

.section-label {
    display: inline-block;
    font-size: var(--fs-xs);
    font-weight: var(--fw-bold);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--c-primary-dark);
    background: hsl(16, 100%, 92%);
    padding: var(--sp-1) var(--sp-3);
    border-radius: var(--r-full);
    margin-bottom: var(--sp-3);
}

.section-label--large {
    font-size: var(--fs-lg);
    padding: var(--sp-2) var(--sp-4);
}

.section-title {
    font-size: clamp(var(--fs-xl), 4vw, var(--fs-2xl));
    font-weight: var(--fw-black);
    color: var(--c-text-1);
    line-height: var(--lh-tight);
    margin-bottom: var(--sp-2);
}

.section-desc {
    font-size: var(--fs-sm);
    color: var(--c-text-2);
    line-height: var(--lh-relaxed);
    max-width: 46ch;
    margin-inline: auto;
    text-align: center;
}

.header {
    background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-accent) 100%);
    color: #fff;
    padding: var(--sp-10) var(--sp-6) var(--sp-8);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 80% at 90% -10%, rgba(255,255,255,0.18) 0%, transparent 60%),
        radial-gradient(ellipse 50% 60% at -10% 110%, rgba(0,0,0,0.08) 0%, transparent 60%);
    pointer-events: none;
}

.header-content {
    position: relative;
    z-index: 1;
}

.header-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    background: rgba(255,255,255,0.18);
    border: 1px solid rgba(255,255,255,0.30);
    border-radius: var(--r-full);
    padding: var(--sp-1) var(--sp-3) var(--sp-1) var(--sp-2);
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.92);
    margin-bottom: var(--sp-4);
}

.header-badge-dot {
    width: 6px; height: 6px;
    background: #fff;
    border-radius: var(--r-full);
    opacity: 0.8;
}

.header-title {
    font-size: clamp(2rem, 8vw, 3.2rem);
    font-weight: var(--fw-black);
    line-height: var(--lh-tight);
    letter-spacing: -0.02em;
    margin-bottom: var(--sp-3);
    color: #fff;
}

.header-subtitle {
    font-size: clamp(var(--fs-sm), 3vw, var(--fs-base));
    color: rgba(255,255,255,0.88);
    line-height: var(--lh-relaxed);
    max-width: 36ch;
    margin-inline: auto;
}

.card {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--r-lg);
    padding: var(--sp-6) var(--sp-5);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--sp-2);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
}

.card-icon {
    width: 44px; height: 44px;
    background: var(--c-primary-tint);
    border-radius: var(--r-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    flex-shrink: 0;
    margin-bottom: var(--sp-1);
}

.card-title {
    font-size: var(--fs-sm);
    font-weight: var(--fw-bold);
    color: var(--c-text-1);
    line-height: var(--lh-snug);
}

.card-text {
    font-size: var(--fs-sm);
    color: var(--c-text-2);
    line-height: var(--lh-relaxed);
    margin: 0;
}

.card-body {
    display: flex;
    flex-direction: column;
    gap: var(--sp-1);
    min-width: 0;
}

.card--center {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--sp-4);
    padding: var(--sp-4) var(--sp-5);
}

.card--center .card-icon { margin-bottom: 0; flex-shrink: 0; }

.card--row {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--sp-4);
    padding: var(--sp-4) var(--sp-5);
}

.card--row .card-icon { margin-bottom: 0; }

.grid-4 {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--sp-3);
}

.grid-3 {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--sp-3);
}

.video-section {
    padding: var(--sp-8) 0 0;
}

.video-section .section-inner-header {
    padding: 0 var(--sp-6) var(--sp-6);
}

.video-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #000;
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.video-element {
    width: 100%; height: 100%;
    object-fit: contain;
    background: #000;
}

.video-element:fullscreen,
.video-element:-webkit-full-screen,
.video-element:-moz-full-screen {
    object-fit: contain;
    background: #000;
}

.pdf-section {
    padding: var(--sp-8) 0 0;
}

.pdf-section .section-inner-header {
    padding: 0 var(--sp-6) var(--sp-6);
}

.pdf-wrapper {
    position: relative;
    width: 100%;
    overflow: hidden;
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: 0;
    margin-bottom: var(--sp-6);
}

.pdf-element {
    width: 100%;
    height: auto;
    display: block;
    border: none;
}

.pdf-fallback {
    font-size: var(--fs-sm);
    color: var(--c-text-2);
    text-align: center;
    padding: var(--sp-4);
    background: var(--c-bg);
}

.pdf-fallback a {
    color: var(--c-primary);
    font-weight: var(--fw-semibold);
}

.stat-banner {
    background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-accent) 100%);
    border-radius: var(--r-lg);
    padding: var(--sp-6) var(--sp-8);
    text-align: center;
    color: #fff;
    margin-bottom: var(--sp-6);
    position: relative;
    overflow: hidden;
    box-shadow: var(--sh-warm);
}

.stat-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 70% 100% at 80% -20%, rgba(255,255,255,0.14) 0%, transparent 60%);
    pointer-events: none;
}

.stat-number {
    display: block;
    font-size: clamp(var(--fs-3xl), 8vw, var(--fs-4xl));
    font-weight: var(--fw-black);
    line-height: 1;
    letter-spacing: -0.03em;
}

.stat-label {
    display: block;
    font-size: var(--fs-sm);
    color: rgba(255,255,255,0.88);
    margin-top: var(--sp-2);
    line-height: var(--lh-relaxed);
}

.who-strip {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-left: 3px solid var(--c-primary);
    border-radius: var(--r-md);
    padding: var(--sp-4) var(--sp-5);
    margin-top: var(--sp-6);
}

.who-strip-icon { font-size: 1.4rem; flex-shrink: 0; }

.who-strip-text {
    font-size: var(--fs-sm);
    color: var(--c-text-2);
    line-height: var(--lh-relaxed);
}

.who-strip-text strong { color: var(--c-text-1); }

.boost-banner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--sp-4);
    background: var(--c-text-1);
    color: #fff;
    border-radius: var(--r-lg);
    padding: var(--sp-6) var(--sp-8);
    margin-top: var(--sp-4);
    flex-wrap: wrap;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.boost-banner::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 50%, rgba(255,127,80,0.12) 100%);
    pointer-events: none;
}

.boost-icon { font-size: 2rem; flex-shrink: 0; }

.boost-headline {
    font-size: clamp(var(--fs-xl), 4vw, var(--fs-2xl));
    font-weight: var(--fw-black);
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.boost-headline .hi {
    color: var(--c-primary);
    font-size: 1.2em;
    font-weight: var(--fw-black);
}

.boost-sub {
    font-size: var(--fs-sm);
    color: rgba(255,255,255,0.6);
    margin-top: var(--sp-1);
}

.sources {
    font-size: var(--fs-xs);
    color: var(--c-text-3);
    line-height: var(--lh-relaxed);
    text-align: center;
    margin-top: var(--sp-6);
    padding-top: var(--sp-4);
    border-top: 1px solid var(--c-border);
}

.cta-section {
    padding: var(--section-pad);
    background: linear-gradient(135deg, var(--c-primary-tint) 0%, hsl(10,100%,96%) 100%);
    text-align: center;
}

.cta-title {
    font-size: clamp(var(--fs-2xl), 5vw, var(--fs-4xl));
    font-weight: var(--fw-black);
    color: var(--c-text-1);
    line-height: var(--lh-tight);
    margin-bottom: var(--sp-2);
}
.section-desc {
    font-size: var(--fs-sm);
    color: var(--c-text-2);
    line-height: var(--lh-relaxed);
    max-width: 46ch;
    margin-inline: auto;
    text-align: center;
}
.cta-desc {
    font-size: var(--fs-sm);
    color: var(--c-text-2);
    margin-bottom: var(--sp-6);
    line-height: var(--lh-relaxed);
    max-width: 40ch;
    margin-inline: auto;
}

.cta-hash {
    font-size: var(--fs-lg);
    font-weight: var(--fw-bold);
    color: var(--c-text-1);
    margin-bottom: var(--sp-6);
    line-height: var(--lh-relaxed);
    max-width: 40ch;
    margin-inline: auto;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-accent) 100%);
    color: #fff;
    padding: var(--sp-3) var(--sp-10);
    border-radius: var(--r-full);
    font-weight: var(--fw-bold);
    font-size: var(--fs-base);
    text-decoration: none;
    box-shadow: var(--sh-warm);
    transition: opacity var(--t-fast), box-shadow var(--t-base);
    min-height: 48px;
}

.btn-primary:hover {
    opacity: 0.9;
    box-shadow: 0 24px 48px -10px hsla(16, 80%, 50%, 0.32);
}

.footer {
    padding: var(--sp-6) var(--sp-6) var(--sp-8);
    background: var(--c-surface);
    border-top: 1px solid var(--c-border);
    text-align: center;
}

.disclaimer {
    font-size: var(--fs-xs);
    color: var(--c-text-3);
    line-height: var(--lh-relaxed);
    margin-bottom: var(--sp-2);
}

.copyright {
    font-size: var(--fs-xs);
    color: var(--c-text-3);
}

@media (min-width: 560px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .boost-banner { text-align: left; flex-wrap: nowrap; }
    .card--center {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: var(--sp-6) var(--sp-5);
    }
    .card--center .card-icon { margin-bottom: var(--sp-1); }
    .card--center .card-body { align-items: center; }
}

@media (min-width: 780px) {
    :root { --section-pad: var(--sp-12) var(--sp-8); }
    .grid-4 { grid-template-columns: repeat(4, 1fr); }
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; }
}

@media (min-width: 640px) {
    body { padding: var(--sp-6); }
    .container { border-radius: var(--r-xl); box-shadow: var(--sh-lg); }
}