/* ============================================================
   DESIGN SYSTEM — Anant Kumar Portfolio
   Aesthetic: Editorial, calm, spacious, confident
   Reference: Apple, Notion, Linear
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&display=swap');

/* ── Tokens ─────────────────────────────────────────────── */
:root {
  --bg:          #FAFAF7;
  --bg-alt:      #F4F4F0;
  --bg-dark:     #0F172A;
  --text-primary: #111111;
  --text-secondary: #525252;
  --accent-saffron: #FF7A00;
  --accent-navy:  #0F172A;
  --border:       #E5E5E5;

  --font-head:  'General Sans', 'Clash Display', 'Inter', sans-serif;
  --font-body:  'Inter', sans-serif;

  --max-width:  1200px;
  --section-pad: clamp(64px, 10vw, 120px);
  --grid-gap:   clamp(24px, 4vw, 48px);

  --ease-out:   cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.45, 0, 0.55, 1);
}

/* ── Reset ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ── Typography Scale ────────────────────────────────────── */
.t-display {
  font-family: var(--font-head);
  font-size: clamp(52px, 8vw, 108px);
  font-weight: 600;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}
.t-h1 {
  font-family: var(--font-head);
  font-size: clamp(36px, 5vw, 72px);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.025em;
}
.t-h2 {
  font-family: var(--font-head);
  font-size: clamp(28px, 3.5vw, 52px);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.t-h3 {
  font-family: var(--font-head);
  font-size: clamp(20px, 2vw, 32px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.015em;
}
.t-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.t-body {
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.75;
  color: var(--text-secondary);
}
.t-large {
  font-size: clamp(18px, 1.8vw, 24px);
  line-height: 1.6;
  color: var(--text-secondary);
}

/* ── Layout ─────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 80px);
}
.section {
  padding: var(--section-pad) 0;
}
.section--alt {
  background: var(--bg-alt);
}
.section--dark {
  background: var(--bg-dark);
  color: #fff;
}
.section-label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 48px;
}
.section-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--text-secondary);
}

/* ── Navigation ─────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 clamp(20px, 5vw, 80px);
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(250, 250, 247, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: border-color 0.3s var(--ease-out);
}
.nav--scrolled {
  border-color: var(--border);
}
.nav__logo {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}
.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav__link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
}
.nav__link:hover { color: var(--text-primary); }
.nav__cta {
  font-size: 14px;
  font-weight: 500;
  padding: 8px 20px;
  background: var(--text-primary);
  color: var(--bg);
  border-radius: 6px;
  transition: opacity 0.2s;
}
.nav__cta:hover { opacity: 0.85; }
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.nav__hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-primary);
  transition: transform 0.3s;
}

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 6px;
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out), opacity 0.2s;
}
.btn--primary {
  background: var(--text-primary);
  color: var(--bg);
}
.btn--primary:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(17,17,17,0.18);
}
.btn--outline {
  border: 1px solid var(--border);
  color: var(--text-primary);
  background: transparent;
}
.btn--outline:hover {
  border-color: var(--text-primary);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(17,17,17,0.08);
}
.btn--saffron {
  background: var(--accent-saffron);
  color: #fff;
}
.btn--saffron:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(255,122,0,0.3);
}
.btn--arrow::after {
  content: '→';
  transition: transform 0.2s;
}
.btn--arrow:hover::after { transform: translateX(4px); }

/* ── Hero ────────────────────────────────────────────────── */
.hero {
  padding-top: 128px;
  padding-bottom: var(--section-pad);
  min-height: 100svh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 28px;
}
.hero__eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-saffron);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.7; }
}
.hero__title { margin-bottom: 28px; }
.hero__sub {
  font-size: clamp(16px, 1.5vw, 20px);
  line-height: 1.65;
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: 44px;
}
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero__portrait-wrap {
  position: relative;
  display: flex;
  justify-content: flex-end;
}
.hero__portrait {
  width: 100%;
  max-width: 480px;
  aspect-ratio: 3/4;
  object-fit: cover;
  object-position: top;
  filter: grayscale(100%) contrast(1.05);
  border-radius: 4px;
}
.hero__portrait-label {
  position: absolute;
  bottom: 24px;
  left: 24px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 12px 16px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

/* ── Stats Strip ─────────────────────────────────────────── */
.stats-strip {
  padding: 40px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.stats-strip__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.stat-item {
  padding: 0 32px;
  border-right: 1px solid var(--border);
  text-align: center;
}
.stat-item:first-child { padding-left: 0; text-align: left; }
.stat-item:last-child { border-right: none; padding-right: 0; text-align: right; }
.stat-num {
  font-family: var(--font-head);
  font-size: clamp(32px, 4vw, 56px);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1;
  color: var(--text-primary);
}
.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 8px;
  font-weight: 400;
}

/* ── Journey Timeline ────────────────────────────────────── */
.journey__grid {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  gap: 0 48px;
}
.journey__line {
  background: var(--border);
  position: relative;
}
.journey__side { display: flex; flex-direction: column; gap: 0; }
.journey__item {
  position: relative;
  padding: 0 0 56px 0;
}
.journey__item:last-child { padding-bottom: 0; }
.journey__item--right { text-align: right; }
.journey__dot-wrap {
  position: absolute;
  top: 6px;
}
.journey__side:first-child .journey__dot-wrap { right: -60px; }
.journey__side:last-child .journey__dot-wrap { left: -60px; }
.journey__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--border);
  transition: border-color 0.3s, background 0.3s;
}
.journey__item:hover .journey__dot {
  border-color: var(--text-primary);
  background: var(--text-primary);
}
.journey__year {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-saffron);
  margin-bottom: 8px;
}
.journey__event {
  font-family: var(--font-head);
  font-size: clamp(18px, 1.8vw, 24px);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.journey__desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* ── Ventures ────────────────────────────────────────────── */
.ventures__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--grid-gap);
}
.venture-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out), border-color 0.3s;
  background: var(--bg);
  text-decoration: none;
  color: inherit;
}
.venture-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 48px rgba(17,17,17,0.08);
  border-color: #ccc;
}
.venture-card--featured {
  grid-column: 1 / -1;
  flex-direction: row;
  align-items: flex-start;
  gap: 48px;
}
.venture-card__emoji {
  font-size: 36px;
  line-height: 1;
}
.venture-card__label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 4px;
}
.venture-card__title {
  font-family: var(--font-head);
  font-size: clamp(20px, 2vw, 28px);
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.venture-card__desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
  flex: 1;
}
.venture-card__metrics {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.venture-metric {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.venture-metric__num {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}
.venture-metric__label {
  font-size: 11px;
  color: var(--text-secondary);
}
.venture-card__arrow {
  font-size: 18px;
  color: var(--text-secondary);
  transition: transform 0.2s, color 0.2s;
}
.venture-card:hover .venture-card__arrow {
  transform: translate(4px, -4px);
  color: var(--text-primary);
}
.venture-card__content { flex: 1; }
.venture-card__tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 100px;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  margin-right: 6px;
  margin-bottom: 6px;
}

/* ── Philosophy ──────────────────────────────────────────── */
.philosophy__list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.philosophy__item {
  display: flex;
  align-items: baseline;
  gap: 32px;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
}
.philosophy__item:first-child { border-top: 1px solid var(--border); }
.philosophy__num {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  min-width: 28px;
}
.philosophy__statement {
  font-family: var(--font-head);
  font-size: clamp(22px, 2.5vw, 40px);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--text-primary);
  flex: 1;
}
.philosophy__note {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-secondary);
  max-width: 280px;
}

/* ── Current Focus ───────────────────────────────────────── */
.focus__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px 80px;
}
.focus__item {}
.focus__label-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 10px;
}
.focus__name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}
.focus__pct {
  font-size: 13px;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
}
.focus__bar {
  height: 1px;
  background: var(--border);
  border-radius: 1px;
  overflow: hidden;
}
.focus__fill {
  height: 100%;
  background: var(--text-primary);
  border-radius: 1px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 1.2s var(--ease-out);
}
.focus__fill.animated { transform: scaleX(1); }

/* ── Writing/Blog ────────────────────────────────────────── */
.writing__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--grid-gap);
}
.post-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 32px 0;
  border-top: 1px solid var(--border);
  cursor: pointer;
  transition: transform 0.25s var(--ease-out);
  text-decoration: none;
  color: inherit;
}
.post-card:hover { transform: translateY(-4px); }
.post-card__tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-saffron);
}
.post-card__title {
  font-family: var(--font-head);
  font-size: clamp(16px, 1.5vw, 20px);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
  color: var(--text-primary);
}
.post-card__excerpt {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
}
.post-card__date {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: auto;
}
.post-card__arrow {
  font-size: 16px;
  color: var(--text-secondary);
  margin-top: auto;
  transition: transform 0.2s;
}
.post-card:hover .post-card__arrow { transform: translate(4px, -4px); }

/* ── Activity Feed ───────────────────────────────────────── */
.activity__feed {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 720px;
}
.activity__item {
  display: flex;
  gap: 24px;
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
}
.activity__item:first-child { border-top: 1px solid var(--border); }
.activity__meta {
  min-width: 88px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 2px;
}
.activity__date { font-size: 12px; color: var(--text-secondary); }
.activity__platform {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.activity__content-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.activity__link {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
  padding-bottom: 1px;
  width: fit-content;
  margin-top: 8px;
  transition: border-color 0.2s;
}
.activity__link:hover { border-color: var(--text-primary); }

/* ── Footer / Contact ────────────────────────────────────── */
.footer {
  background: var(--bg-dark);
  color: #fff;
  padding: clamp(80px, 12vw, 160px) 0 clamp(40px, 6vw, 80px);
}
.footer__tagline {
  font-family: var(--font-head);
  font-size: clamp(32px, 5vw, 72px);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: #fff;
  margin-bottom: 48px;
  max-width: 680px;
}
.footer__email {
  display: inline-block;
  font-size: clamp(16px, 2vw, 22px);
  font-weight: 400;
  color: rgba(255,255,255,0.6);
  border-bottom: 1px solid rgba(255,255,255,0.2);
  padding-bottom: 2px;
  margin-bottom: 64px;
  transition: color 0.2s, border-color 0.2s;
}
.footer__email:hover {
  color: #fff;
  border-color: rgba(255,255,255,0.6);
}
.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 32px;
  flex-wrap: wrap;
  gap: 16px;
}
.footer__copy {
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}
.footer__socials {
  display: flex;
  gap: 28px;
}
.footer__social {
  font-size: 13px;
  font-weight: 500;
  color: rgba(255,255,255,0.5);
  transition: color 0.2s;
}
.footer__social:hover { color: #fff; }

/* ── Scroll-reveal ───────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ── Page Header (venture pages) ─────────────────────────── */
.page-hero {
  padding-top: 128px;
  padding-bottom: var(--section-pad);
  border-bottom: 1px solid var(--border);
}
.page-hero__back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 48px;
  transition: color 0.2s;
}
.page-hero__back:hover { color: var(--text-primary); }
.page-hero__back::before { content: '←'; }
.page-hero__label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 16px;
}
.page-hero__title { margin-bottom: 24px; }
.page-hero__desc {
  font-size: clamp(16px, 1.5vw, 20px);
  line-height: 1.65;
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 40px;
}
.page-hero__meta {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.page-meta-item { display: flex; flex-direction: column; gap: 4px; }
.page-meta-item__label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-secondary); font-weight: 600; }
.page-meta-item__value { font-size: 15px; font-weight: 500; color: var(--text-primary); }

/* Case study sections */
.case-section {
  padding: 80px 0;
  border-bottom: 1px solid var(--border);
}
.case-section__header {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 64px;
  align-items: start;
}
.case-section__number {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  padding-top: 6px;
}
.case-section__title {
  font-family: var(--font-head);
  font-size: clamp(24px, 2.5vw, 36px);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 24px;
}
.case-section__body {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
}
.case-section__body p + p { margin-top: 20px; }

/* Metrics row */
.metrics-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  margin-top: 48px;
}
.metric-box {
  padding: 32px;
  border-right: 1px solid var(--border);
  text-align: center;
}
.metric-box:last-child { border-right: none; }
.metric-box__num {
  font-family: var(--font-head);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 600;
  letter-spacing: -0.025em;
  color: var(--text-primary);
}
.metric-box__label { font-size: 12px; color: var(--text-secondary); margin-top: 6px; }

/* Tech tags */
.tech-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.tech-tag {
  font-size: 12px;
  font-weight: 500;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-secondary);
  background: var(--bg);
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 100px;
  }
  .hero__portrait-wrap {
    justify-content: flex-start;
    order: -1;
  }
  .hero__portrait { max-width: 320px; aspect-ratio: 4/5; }
  .stats-strip__grid { grid-template-columns: repeat(2, 1fr); gap: 32px 0; }
  .stat-item { border-right: none; text-align: left; padding: 0; }
  .stat-item:last-child { text-align: left; padding-right: 0; }
  .ventures__grid { grid-template-columns: 1fr; }
  .venture-card--featured { flex-direction: column; }
  .writing__grid { grid-template-columns: repeat(2, 1fr); }
  .philosophy__item { flex-wrap: wrap; gap: 16px; }
  .philosophy__note { max-width: 100%; }
  .focus__grid { grid-template-columns: 1fr; gap: 32px; }
  .case-section__header { grid-template-columns: 1fr; gap: 24px; }
  .journey__grid { grid-template-columns: 24px 1fr; gap: 0 24px; }
  .journey__side:first-child { display: none; }
  .journey__side:last-child .journey__dot-wrap { left: -30px; }
  .nav__links { display: none; }
  .nav__hamburger { display: flex; }
}

@media (max-width: 600px) {
  .writing__grid { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
  .ventures__grid { grid-template-columns: 1fr; }
  .metrics-row { grid-template-columns: 1fr 1fr; }
  .metric-box:nth-child(even) { border-right: none; }
  .metric-box:nth-child(n+3) { border-top: 1px solid var(--border); }
}

/* Mobile nav open */
.nav__mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 24px clamp(20px, 5vw, 80px);
  flex-direction: column;
  gap: 20px;
  z-index: 99;
}
.nav__mobile-menu.open { display: flex; }
.nav__mobile-link {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
}
.nav__mobile-link:hover { color: var(--text-primary); }