.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(247,247,245,.96);
  border-bottom: 1px solid var(--border-subtle);
}
.site-header.scrolled { background: rgba(255,255,255,.98); }
.header-inner { height: 100%; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 30px; }
.brand-link { display: inline-flex; align-items: center; gap: 12px; }
.brand-logo { width: 46px; height: 34px; object-fit: contain; object-position: center; border-radius: 0; }
.brand-text { display: flex; flex-direction: column; line-height: 1.05; }
.brand-title { color: var(--text-primary); font-size: .84rem; font-weight: 700; letter-spacing: .12em; }
.brand-subtitle { margin-top: 6px; color: var(--text-muted); font-size: .6rem; font-weight: 600; letter-spacing: .16em; }
.nav-menu { grid-column: 2 / 4; display: grid; grid-template-columns: auto minmax(96px,1fr); align-items: center; gap: clamp(22px,3vw,52px); }
.nav-links { display: flex; align-items: center; gap: clamp(18px,2.1vw,34px); list-style: none; }
.nav-item a { display: block; padding: 10px 0 7px; border-bottom: 1px solid transparent; color: var(--text-secondary); font-size: .83rem; font-weight: 600; }
.nav-item a:hover, .nav-item a.active { border-color: var(--text-primary); color: var(--text-primary); }
.nav-actions { display: flex; align-items: center; justify-content: flex-end; gap: 10px; }
.lang-btn { width: 44px; height: 44px; padding: 0; display: inline-flex; flex: 0 0 44px; align-items: center; justify-content: center; border: 1px solid var(--border-light); border-radius: 50%; color: var(--text-primary); font-size: .68rem; line-height: 1; font-weight: 700; letter-spacing: .04em; }
.btn-primary, .btn-secondary { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; padding: 10px 18px; border: 1px solid var(--text-primary); border-radius: 999px; font-size: .8rem; font-weight: 700; letter-spacing: .02em; transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast); }
.btn-primary { background: var(--text-primary); color: var(--text-inverse); }
.btn-secondary { background: transparent; color: var(--text-primary); }
.btn-primary:hover, .btn-secondary:hover { transform: translateY(-2px); background: var(--accent-primary); border-color: var(--accent-primary); color: #fff; }

.mobile-toggle { display: none; width: 42px; height: 42px; padding: 10px 7px; flex-direction: column; justify-content: center; gap: 6px; }
.mobile-toggle span { width: 100%; height: 1px; background: var(--text-primary); transition: transform var(--transition-fast), opacity var(--transition-fast); }
.mobile-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-drawer { position: fixed; z-index: 1050; top: 0; right: -100%; width: min(88%,390px); height: 100svh; padding: 95px 28px 28px; display: flex; flex-direction: column; justify-content: space-between; background: #fff; border-left: 1px solid var(--border-light); transition: right var(--transition-normal); }
.mobile-drawer.active { right: 0; }
.drawer-overlay { position: fixed; z-index: 1040; inset: 0; pointer-events: none; opacity: 0; background: rgba(23,23,19,.55); transition: opacity var(--transition-normal); }
.drawer-overlay.active { pointer-events: auto; opacity: 1; }
.drawer-links { display: flex; flex-direction: column; list-style: none; border-top: 1px solid var(--border-subtle); }
.drawer-links a { display: block; padding: 16px 0; border-bottom: 1px solid var(--border-subtle); font-family: var(--font-serif); font-size: 1.08rem; }
.mobile-toggle, .drawer-links a, .nav-cta, .btn-primary, .btn-secondary, .lang-btn { min-height: 44px; }

.hero-section, .doc-page { padding-top: calc(var(--header-height) + clamp(54px,7vw,100px)); padding-bottom: clamp(80px,9vw,140px); }
.hero-badge { display: inline-block; margin-bottom: 24px; color: var(--accent-primary); font-size: .68rem; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; }
.hero-title { max-width: 1000px; margin-bottom: 24px; font-family: var(--font-sans); font-size: clamp(2.6rem,5.2vw,5.6rem); font-weight: 700; line-height: 1.08; letter-spacing: -.055em; }
.hero-title em { color: var(--accent-primary); font-style: normal; }
.hero-subtitle { max-width: 700px; margin-bottom: 38px; color: var(--text-secondary); font-family: var(--font-serif); font-size: clamp(1rem,1.55vw,1.25rem); line-height: 1.9; }

.grid-2, .grid-3 { display: grid; gap: 1px; background: var(--border-subtle); border: 1px solid var(--border-subtle); }
.grid-2 { grid-template-columns: repeat(2,1fr); }
.grid-3 { grid-template-columns: repeat(3,1fr); }
.feature-card { padding: clamp(28px,3.2vw,48px); background: var(--bg-card); border: 0; border-radius: 0; transition: background var(--transition-fast); }
.feature-card:hover { background: #fff; }
.feature-icon { width: auto; height: auto; margin-bottom: 30px; display: block; background: none; color: var(--accent-primary); font-size: 1.6rem; }
.feature-card h3 { margin-bottom: 12px; font-family: var(--font-serif); font-size: 1.45rem; font-weight: 600; }
.feature-card p { color: var(--text-secondary); font-size: .94rem; line-height: 1.8; }

.doc-header { margin-bottom: 52px; padding-bottom: 34px; border-bottom: 1px solid var(--border-light); }
.doc-layout { display: grid; grid-template-columns: 230px minmax(0,820px); gap: clamp(42px,7vw,100px); }
.doc-sidebar { position: sticky; top: calc(var(--header-height) + 28px); height: fit-content; }
.doc-toc { display: flex; flex-direction: column; list-style: none; }
.doc-toc a { display: block; padding: 9px 0; border-bottom: 1px solid var(--border-subtle); color: var(--text-secondary); font-size: .82rem; }
.doc-toc a:hover, .doc-toc a.active { color: var(--accent-primary); }
.doc-content h2 { margin: 46px 0 16px; padding-top: 25px; border-top: 1px solid var(--border-subtle); font-family: var(--font-serif); font-size: 1.75rem; font-weight: 600; }
.doc-content h2:first-child { margin-top: 0; padding-top: 0; border-top: 0; }
.doc-content p, .doc-content ul, .doc-content ol { margin-bottom: 20px; color: var(--text-secondary); line-height: 1.9; }
.doc-content ul, .doc-content ol { padding-left: 1.4rem; }
.doc-content li { margin-bottom: 8px; }

.accordion { border-top: 1px solid var(--border-light); }
.accordion-item { background: transparent; border: 0; border-bottom: 1px solid var(--border-light); border-radius: 0; }
.accordion-header { width: 100%; padding: 24px 0; display: flex; align-items: center; justify-content: space-between; gap: 24px; color: var(--text-primary); text-align: left; font-family: var(--font-serif); font-size: 1.08rem; font-weight: 600; }
.accordion-icon { color: var(--accent-primary); transition: transform var(--transition-fast); }
.accordion-item.active .accordion-icon { transform: rotate(180deg); }
.accordion-body { max-height: 0; overflow: hidden; padding: 0; color: var(--text-secondary); line-height: 1.85; transition: max-height var(--transition-normal), padding var(--transition-normal); }
.accordion-item.active .accordion-body { max-height: 520px; padding: 0 0 25px; }

.site-footer { margin-top: auto; padding: clamp(70px,8vw,110px) 0 28px; background: #101c2c; color: #ffffff; border-top: 0; }
.site-footer .brand-title, .site-footer .footer-col h4 { color: #ffffff; }
.site-footer .brand-subtitle, .site-footer .footer-brand p, .site-footer .footer-links a, .site-footer .footer-bottom { color: #c8d4e5; }
.site-footer .brand-logo { filter: invert(1); }
.footer-top { display: grid; grid-template-columns: 2fr repeat(3,1fr); gap: clamp(30px,5vw,80px); margin-bottom: 72px; }
.footer-brand p { max-width: 330px; margin-top: 24px; font-family: var(--font-serif); font-size: .9rem; line-height: 1.8; }
.footer-col h4 { margin-bottom: 22px; font-size: .68rem; font-weight: 700; letter-spacing: .15em; text-transform: uppercase; }
.footer-links { display: flex; flex-direction: column; gap: 12px; list-style: none; }
.footer-links a { font-size: .84rem; }
.footer-links a:hover { color: #fff; text-decoration: underline; text-underline-offset: 4px; }
.footer-bottom { padding-top: 22px; display: flex; justify-content: space-between; gap: 24px; border-top: 1px solid #40516a; font-size: .7rem; letter-spacing: .06em; }

/* Reframe legacy inline page UI without gradients or low-contrast glass effects. */
.bio-card, .tech-stack-card { background: var(--bg-card) !important; border: 1px solid var(--border-light) !important; border-radius: 0 !important; box-shadow: none !important; }
.bio-avatar-placeholder { background: var(--accent-primary) !important; border-radius: 0 !important; }
.app-brand-badge { background: transparent !important; border: 1px solid var(--border-light) !important; border-radius: 0 !important; }
.hero-phone-glow { display: none !important; }
.phone-mockup, .phone-frame { box-shadow: 0 24px 60px rgba(28,24,19,.22) !important; }
.stats-bar { background: var(--bg-secondary) !important; border-top: 1px solid var(--border-light); border-bottom: 1px solid var(--border-light); }
.app-view-button { border-radius: 0 !important; background: transparent !important; color: var(--text-secondary) !important; }
.app-view-button.active { border-color: var(--text-primary) !important; background: var(--text-primary) !important; color: #fff !important; }

@media (max-width: 1050px) {
  .nav-menu { display: none; }
  .mobile-toggle { display: flex; grid-column: 3; justify-self: end; }
  .grid-3 { grid-template-columns: repeat(2,1fr); }
  .footer-top { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-top > :last-child { grid-column: 2; }
  .about-grid, .product-hero-grid { grid-template-columns: 1fr !important; gap: 52px !important; }
  .product-grid { grid-template-columns: 1fr !important; gap: 52px !important; }
  .bio-card { max-width: 620px; }
  .hero-phone-container { min-height: 680px; align-items: center; }
  .stats-grid { grid-template-columns: repeat(2,1fr) !important; }
  .tab-navigation { flex-wrap: wrap; }
}
@media (max-width: 760px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .doc-layout { grid-template-columns: 1fr; }
  .doc-sidebar { display: none; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 42px 24px; }
  .footer-top > :first-child { grid-column: 1 / -1; }
  .footer-top > :last-child { grid-column: auto; }
  .footer-bottom { flex-direction: column; }
  .hero-section, .doc-page { padding-top: calc(var(--header-height) + 42px); padding-bottom: 76px; }
  .hero-title { font-size: clamp(2.35rem,11vw,4rem); line-height: 1.16; }
  .hero-subtitle { font-size: 1rem; line-height: 1.8; }
  .about-hero, .product-hero { padding-top: calc(var(--header-height) + 42px) !important; padding-bottom: 70px !important; }
  .about-grid { margin-top: 48px !important; }
  .hero-meta { flex-wrap: wrap; gap: 24px !important; }
  .meta-item { flex: 1 1 200px; }
  .philosophy-grid { grid-template-columns: 1fr !important; gap: 1px !important; }
  .bio-card, .tech-stack-card { padding: 28px 22px !important; }
  .phone-mockup { width: min(290px,86vw) !important; height: auto !important; aspect-ratio: 310/630; border-radius: 46px !important; }
  .phone-display { border-radius: 38px !important; }
  .hero-phone-container { min-height: 590px; }
  .stats-grid { grid-template-columns: 1fr 1fr !important; gap: 24px 12px !important; }
  .tab-navigation { display: grid !important; grid-template-columns: 1fr 1fr; gap: 8px !important; }
  .app-view-button { width: 100%; min-height: 48px; padding: 12px !important; justify-content: flex-start; }
  .product-hero .hero-subtitle + div { flex-wrap: wrap; align-items: stretch !important; }
  .product-hero .hero-subtitle + div > a { min-height: 48px; }
  .accordion-header { min-height: 64px; padding: 20px 0; font-size: 1rem; }
  .doc-content { overflow-x: auto; }
  .doc-content table { display: block; overflow-x: auto; white-space: nowrap; }
}
@media (max-width: 480px) {
  .brand-title { font-size: .75rem; }
  .brand-subtitle { display: none; }
  .brand-logo { width: 40px; height: 32px; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-top > :first-child, .footer-top > :last-child { grid-column: auto; }
  .stats-grid, .tab-navigation { grid-template-columns: 1fr !important; }
  .hero-phone-container { min-height: 540px; }
  .phone-mockup { width: min(270px,84vw) !important; }
  .product-hero .hero-subtitle + div > a { width: 100%; }
  .feature-card { padding: 28px 22px; }
  .footer-bottom { text-align: left; }
}