:root {
  --color-bg-main: #171a1d;
  --color-bg-dark: #0e1215;
  --color-bg-card: #141a1e;
  --color-bg-soft: #1b2125;
  --color-aqua: #37d7c4;
  --color-aqua-hover: #4be4d2;
  --color-aqua-muted: rgba(55, 215, 196, 0.18);
  --color-text-main: #d7d9dc;
  --color-text-secondary: #9fa5ab;
  --color-text-muted: #7e858b;
  --color-border: rgba(55, 215, 196, 0.32);
  --color-divider: rgba(255, 255, 255, 0.08);
  --color-white-soft: #f1f3f4;
  --color-black: #080a0c;
  --content-width: 1180px;
}

@font-face {
  font-family: "Manrope";
  src: url("/assets/fonts/manrope/manrope-variable.ttf") format("truetype");
  font-style: normal;
  font-weight: 200 800;
  font-display: swap;
}
@font-face {
  font-family: "Lora";
  src: url("/assets/fonts/lora/lora-variable.ttf") format("truetype");
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
}
@font-face {
  font-family: "Lora";
  src: url("/assets/fonts/lora/lora-italic-variable.ttf") format("truetype");
  font-style: italic;
  font-weight: 400 700;
  font-display: swap;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 5rem; }
body { margin: 0; background: var(--color-bg-main); color: var(--color-text-main); font: 400 1.0625rem/1.7 Manrope, Inter, Arial, sans-serif; }
body.menu-open { overflow: hidden; }
img, video { display: block; max-width: 100%; height: auto; }
a { color: var(--color-aqua); }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--color-aqua); outline-offset: 4px; }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 100; padding: .75rem 1rem; background: var(--color-aqua); color: var(--color-black); }
.skip-link:focus { top: 1rem; }
.container { width: min(100% - 44px, var(--content-width)); margin-inline: auto; }
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(14,18,21,.94); border-bottom: 1px solid var(--color-divider); backdrop-filter: blur(12px); }
.header-inner { min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { color: var(--color-white-soft); text-decoration: none; font-size: .82rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.header-actions { display: flex; align-items: center; gap: .75rem; }
.language-switch { display: flex; gap: .35rem; font-size: .875rem; }
.language-switch a { color: var(--color-text-secondary); text-decoration: none; }
.language-switch [aria-current="page"] { color: var(--color-aqua); font-weight: 700; }
.menu-toggle { width: 44px; height: 44px; border: 1px solid var(--color-border); background: transparent; color: var(--color-white-soft); border-radius: 6px; }
.site-nav { display: none; position: fixed; inset: 69px 0 auto; padding: 1.5rem 22px; background: var(--color-bg-dark); border-bottom: 1px solid var(--color-divider); }
.site-nav.is-open { display: block; }
.site-nav ul { max-width: var(--content-width); margin: auto; padding: 0; list-style: none; }
.site-nav a { display: block; padding: .8rem 0; color: var(--color-white-soft); text-decoration: none; }
.section { padding: clamp(4.75rem, 12vw, 8.5rem) 0; }
.section-dark { background: var(--color-bg-dark); }
.eyebrow { margin: 0 0 1rem; color: var(--color-aqua); text-transform: uppercase; letter-spacing: .15em; font-size: .72rem; font-weight: 800; }
h1, h2, h3 { color: var(--color-white-soft); line-height: 1.1; letter-spacing: -.025em; }
h1 { margin: 0 0 1.25rem; font-size: clamp(2.65rem, 13vw, 5rem); }
h2 { margin: 0 0 1.25rem; font-size: clamp(2rem, 8vw, 3.25rem); }
h3 { font-size: clamp(1.35rem, 5vw, 2rem); }
.lead { max-width: 730px; color: var(--color-text-secondary); font-size: clamp(1.08rem, 3vw, 1.25rem); }
.hero-grid, .split { display: grid; gap: 2rem; align-items: center; }
.hero-media img, .media-frame img { width: 100%; border: 1px solid var(--color-border); object-fit: cover; }
.hero-media img { aspect-ratio: 3 / 4; }
.book-cover-media img { aspect-ratio: 2 / 3; object-fit: contain; }
.media-frame img { aspect-ratio: 4 / 3; }
.actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.75rem; }
.button { min-height: 52px; display: inline-flex; align-items: center; justify-content: center; padding: .75rem 1.25rem; border: 1px solid var(--color-aqua); border-radius: 6px; text-decoration: none; font-weight: 700; cursor: pointer; }
.button-primary { background: var(--color-aqua); color: var(--color-black); }
.button-primary:hover { background: var(--color-aqua-hover); }
.button-secondary { background: transparent; color: var(--color-aqua); }
.button-secondary:hover { background: var(--color-aqua-muted); }
.social-list { display: flex; flex-wrap: wrap; gap: 1rem; padding: 0; list-style: none; }
.social-list a { color: var(--color-text-main); }
.social-icon { width: 1.25rem; height: 1.25rem; flex: 0 0 auto; fill: currentColor; color: var(--color-aqua); }
.social-label, .social-list-icons a { display: inline-flex; align-items: center; gap: .65rem; }
.social-list-icons a { min-height: 44px; text-decoration: none; }
.social-list a:hover .social-icon, .social-list a:focus-visible .social-icon { color: var(--color-text-main); }
.cards { display: grid; gap: 1rem; margin-top: 2rem; }
.card { display: flex; min-width: 0; flex-direction: column; padding: 1.35rem; background: var(--color-bg-card); border: 1px solid var(--color-divider); }
.card picture { display: block; }
.card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.card h3 { margin-bottom: .7rem; overflow-wrap: anywhere; }
.card > p { color: var(--color-text-secondary); }
.card > a { margin-top: auto; padding-top: 1rem; font-weight: 700; text-underline-offset: .25em; }
.business-principles { margin-top: 2.5rem; }
.book-download { text-align: center; }
.book-download .lead { margin: 0 auto 1.75rem; }
.fine-print { margin: .8rem 0 0; color: var(--color-text-muted); font-size: .85rem; }
.legal-content { max-width: 850px; }
.legal-content h2 { margin-top: 2.5rem; }
.legal-content strong { color: var(--color-aqua); }
.legal-section { padding-top: .25rem; }
.legal-section ul { padding-left: 1.3rem; }
.legal-section li + li { margin-top: .45rem; }
.book-content { max-width: 900px; }
.book-chapter { padding-block: 3.5rem; border-bottom: 1px solid var(--color-divider); }
.book-chapter:first-child { padding-top: 0; }
.book-chapter p { max-width: 760px; }
.book-chapter > p:not(.lead) { color: var(--color-text-secondary); }
.book-topics { display: grid; gap: .8rem; margin: 2rem 0 0; padding-left: 1.3rem; color: var(--color-text-secondary); }
.book-topics li::marker { color: var(--color-aqua); }
.book-content > .quote { max-width: 760px; margin-block: 4rem; }
.author-note { border-bottom: 0; }
.quote { margin: 2rem 0; padding-left: 1.25rem; border-left: 3px solid var(--color-aqua); font-family: Lora, Georgia, serif; font-size: 1.35rem; }
.video-preview { position: relative; max-width: 360px; margin-inline: auto; }
.video-preview img { width: 100%; aspect-ratio: 9 / 16; object-fit: cover; }
.play-button { position: absolute; inset: 50% auto auto 50%; transform: translate(-50%, -50%); width: 72px; height: 72px; border-radius: 50%; border: 0; background: var(--color-aqua); color: var(--color-black); font-size: 1.2rem; cursor: pointer; }
.video-modal { width: 100vw; height: 100dvh; max-width: none; max-height: none; padding: 0; border: 0; background: var(--color-black); }
.video-modal::backdrop { background: rgba(0,0,0,.9); }
.video-modal video { width: 100%; height: 100%; object-fit: contain; }
.video-close { position: fixed; top: 1rem; right: 1rem; z-index: 2; width: 48px; height: 48px; border: 1px solid var(--color-white-soft); border-radius: 50%; background: rgba(0,0,0,.65); color: white; cursor: pointer; }
.site-footer { padding: 2.5rem 0; background: var(--color-bg-dark); border-top: 1px solid var(--color-divider); }
.footer-links { display: flex; flex-wrap: wrap; gap: .8rem 1.25rem; }
.back-top { border: 0; background: transparent; color: var(--color-aqua); cursor: pointer; }

/* Phase 2: approved visual direction for the opening experience. */
.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-top: 3.5rem;
  background:
    radial-gradient(circle at 82% 22%, rgba(55,215,196,.12), transparent 32rem),
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: auto, 52px 52px, 52px 52px;
}
.hero::before { content: "AK"; position: absolute; z-index: -1; top: 3.2rem; right: -1.2rem; color: rgba(255,255,255,.025); font-size: clamp(10rem, 56vw, 42rem); font-weight: 800; line-height: .8; letter-spacing: -.12em; }
.hero-grid { gap: 2.75rem; }
.hero-copy { position: relative; z-index: 2; }
.hero-copy h1 { max-width: 8ch; font-size: clamp(3.25rem, 15vw, 6.6rem); letter-spacing: -.065em; }
html[lang="ru"] .hero-copy h1 { font-size: clamp(3.25rem, 13vw, 5.7rem); }
.hero-copy h1 span { display: block; color: var(--color-aqua); }
.hero-copy .lead { max-width: 590px; color: var(--color-white-soft); font-size: clamp(1.12rem, 4.6vw, 1.38rem); line-height: 1.55; }
.hero-note { max-width: 510px; margin-top: 1.2rem; padding-left: 1rem; border-left: 1px solid var(--color-border); color: var(--color-text-secondary); font-size: .98rem; }
.hero .actions { display: grid; grid-template-columns: 1fr; }
.hero .button { justify-content: space-between; padding-inline: 1.2rem; }
.hero-portrait { position: relative; width: min(100%, 430px); margin-inline: auto; }
.hero-media { position: relative; padding: 10px; background: linear-gradient(145deg, rgba(55,215,196,.4), transparent 38%, rgba(255,255,255,.08)); }
.hero-media::before { content: ""; position: absolute; inset: -12px auto auto -12px; width: 42%; aspect-ratio: 1; border-top: 1px solid var(--color-aqua); border-left: 1px solid var(--color-aqua); pointer-events: none; }
.hero-media img { filter: saturate(.75) contrast(1.04); }
.media-caption { display: flex; justify-content: space-between; margin: .8rem 0 0; color: var(--color-text-muted); font-size: .72rem; letter-spacing: .09em; text-transform: uppercase; }
.media-caption span { color: var(--color-aqua); }
.scroll-cue { display: flex; align-items: center; gap: .7rem; margin-top: 3.5rem; color: var(--color-text-muted); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; }
.scroll-cue span { display: block; width: 2.5rem; height: 1px; background: var(--color-border); }

.social-strip { border-block: 1px solid var(--color-divider); }
.social-inner { padding-block: 1.6rem; }
.social-inner > p { margin: 0 0 1rem; color: var(--color-text-muted); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; }
.social-inner .social-list { display: grid; gap: 0; margin: 0; border-top: 1px solid var(--color-divider); }
.social-inner .social-list li { border-bottom: 1px solid var(--color-divider); }
.social-inner .social-list a { display: flex; justify-content: space-between; align-items: center; min-height: 52px; text-decoration: none; font-size: .9rem; }
.social-inner .social-list a span:last-child { color: var(--color-aqua); }

.story-intro { position: relative; overflow: hidden; background: linear-gradient(180deg, var(--color-bg-main), #121619 58%, var(--color-bg-dark)); }
.story-intro::after { content: ""; position: absolute; inset: 15% -12rem auto auto; width: 24rem; height: 24rem; border: 1px solid rgba(55,215,196,.08); border-radius: 50%; box-shadow: 0 0 0 5rem rgba(55,215,196,.018), 0 0 0 10rem rgba(55,215,196,.012); pointer-events: none; }
.story-video-grid, .journey-grid { position: relative; z-index: 1; }
.section-index { margin: 0 0 2.8rem; color: var(--color-text-muted); font-size: .68rem; letter-spacing: .13em; text-transform: uppercase; }
.story-copy h2, .journey-copy h2 { max-width: 10ch; }
.video-duration { display: flex; gap: .55rem; align-items: center; margin-top: 1.5rem; color: var(--color-text-muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; }
.video-duration span { color: var(--color-aqua); font-size: .55rem; }
.video-shell { width: min(82%, 340px); margin: 1rem auto 0; padding: 8px; border: 1px solid var(--color-border); background: rgba(14,18,21,.75); box-shadow: 0 30px 80px rgba(0,0,0,.28); }
.video-preview { max-width: none; overflow: hidden; }
.video-preview::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 50%, rgba(8,10,12,.62)); pointer-events: none; }
.play-button { z-index: 2; display: grid; place-items: center; width: 76px; height: 76px; box-shadow: 0 0 0 10px rgba(55,215,196,.13); }
.play-button span { transform: translateX(2px); }
.video-label { position: absolute; z-index: 2; left: 1rem; bottom: 1rem; color: var(--color-white-soft); font-size: .72rem; letter-spacing: .11em; text-transform: uppercase; }
.journey-grid { display: grid; gap: 2.5rem; margin-top: 8rem; }
.journey-media { position: relative; }
.journey-media::before { content: ""; position: absolute; z-index: -1; inset: -12px 12px 12px -12px; border: 1px solid var(--color-border); }
.journey-media > span { position: absolute; right: -2.5rem; bottom: 4.2rem; transform: rotate(-90deg); color: var(--color-text-muted); font-size: .62rem; letter-spacing: .14em; text-transform: uppercase; }
.journey-copy { position: relative; }
.journey-copy > p:not(.eyebrow, .section-index) { color: var(--color-text-secondary); }
.journey-copy .lead { color: var(--color-text-main); }
.journey-mark { position: absolute; right: 0; bottom: -3rem; color: rgba(55,215,196,.07); font-size: 6rem; font-weight: 800; line-height: 1; }

@media (min-width: 768px) {
  .container { width: min(100% - 64px, var(--content-width)); }
  .hero-grid, .split { grid-template-columns: 1fr 1fr; gap: clamp(2rem, 6vw, 5rem); }
  .cards { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .menu-toggle { display: none; }
  .site-nav { display: block; position: static; padding: 0; background: transparent; border: 0; }
  .site-nav ul { display: flex; gap: 1.25rem; }
  .site-nav a { padding: .5rem 0; font-size: .9rem; }
  .header-inner { min-height: 76px; }
  .video-modal { width: min(430px, 90vw); height: min(90dvh, 760px); }
  .hero { min-height: calc(100svh - 76px); display: flex; flex-direction: column; justify-content: center; }
  .hero-grid { grid-template-columns: minmax(0, 1.15fr) minmax(300px, .85fr); }
  .hero .actions { display: flex; }
  .hero .button { min-width: 190px; }
  .social-inner { display: grid; grid-template-columns: .8fr 2.2fr; align-items: center; gap: 2rem; }
  .social-inner > p { margin: 0; }
  .social-inner .social-list { grid-template-columns: repeat(3, 1fr); border-top: 0; }
  .social-inner .social-list li { border-bottom: 0; border-left: 1px solid var(--color-divider); }
  .social-inner .social-list a { padding-inline: 1.25rem; }
  .story-video-grid { grid-template-columns: 1.1fr .9fr; }
  .journey-grid { grid-template-columns: 1.08fr .92fr; align-items: center; gap: clamp(3rem, 8vw, 7rem); margin-top: 11rem; }
  .book-topics { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 3rem; }
}

@media (min-width: 1024px) {
  .hero-copy { padding-left: 4rem; }
  .hero-copy::before { content: ""; position: absolute; top: .3rem; left: 0; width: 1px; height: 10rem; background: linear-gradient(var(--color-aqua), transparent); }
  .story-copy { padding-left: 4rem; }
  .video-shell { width: min(100%, 390px); }
  .journey-copy { padding-right: 4rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}