/* ==========================================================================
   NTPU AI4X Shared design system.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&family=Noto+Sans+TC:wght@400;500;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --ink: #0c1a2a;
  --ink-soft: #4a5d6e;
  --paper: #f5f7fb;
  --panel: rgba(255, 255, 255, 0.72);
  --line: rgba(12, 26, 42, 0.13);
  --blue: #0d4a9e;
  --blue-2: #4a90e2;
  --cyan: #11a8a0;
  --violet: #6d4ad9;
  --sun: #e8a838;
  --clay: #b85c3a;
  --radius: 10px;
  --shadow: 0 18px 42px -34px rgba(12, 26, 42, 0.5);
  --container: 1400px;
  --gutter: 1.5rem;
  --nav-height: 76px;
  --font-body: 'Manrope', 'Noto Sans TC', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --gradient: linear-gradient(135deg, var(--blue), var(--cyan) 52%, var(--violet));
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  padding-top: var(--nav-height);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  background:
    radial-gradient(900px 500px at 88% -8%, rgba(109, 74, 217, 0.12), transparent 60%),
    radial-gradient(800px 520px at -6% 4%, rgba(17, 168, 160, 0.12), transparent 55%),
    linear-gradient(180deg, #eaf1fb 0%, #f5f7fb 36%, #f5f7fb 70%, #eef3f8 100%);
  overflow-x: hidden;
}

body.menu-open { overflow: hidden; }

:lang(zh-Hant), [lang="zh-Hant"] { line-height: 1.85; }

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--blue); }

a:focus-visible, button:focus-visible {
  outline: 3px solid rgba(13, 74, 158, 0.4);
  outline-offset: 3px;
}

[id] { scroll-margin-top: calc(var(--nav-height) + 1rem); }
#main-content:focus { outline: none; }

.skip-link {
  position: fixed; top: 0.75rem; left: 0.75rem; z-index: 1000;
  padding: 0.65rem 0.95rem; background: #fff;
  border: 1px solid var(--line); border-radius: var(--radius);
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }

/* Typography */
h1, h2, h3, h4 {
  margin: 0; font-family: var(--font-body);
  font-weight: 800; line-height: 1.15; letter-spacing: 0;
}
h1 { font-size: 3.3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.3rem; }
h4 { font-size: 1rem; }
p { margin: 0 0 1rem; }
strong { color: var(--ink); font-weight: 800; }

.lede {
  max-width: 62ch; color: var(--ink-soft);
  font-size: 1.12rem; line-height: 1.72;
}

.eyebrow, .num-label, .breadcrumb, .chip, .day-label, .stat-label, .tier-name {
  font-family: var(--font-mono); font-size: 0.95rem; font-weight: 500;
  letter-spacing: 0.08em;
}
.eyebrow, .num-label, .breadcrumb .sep, .track-heading {
  color: var(--cyan);
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 0.6rem;
  color: var(--cyan);
}
.eyebrow::before { content: ''; width: 1.6rem; height: 1px; background: currentColor; }

.grad-text {
  color: transparent; font-style: normal;
  background: var(--gradient);
  -webkit-background-clip: text; background-clip: text;
}
.theme-emphasis { color: var(--cyan); font-style: normal; }

.zh-sub, .en-sub {
  display: block; margin-top: 0.35rem;
  color: var(--ink-soft); font-size: 0.5em; font-weight: 600; letter-spacing: 0;
}

/* Layout */
.wrap {
  position: relative; z-index: 2; width: 100%;
  max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter);
}
section { position: relative; padding: 2.75rem 0; }
.section-soft { background: rgba(255, 255, 255, 0.4); }
.section-tint {
  background: linear-gradient(160deg, rgba(13, 74, 158, 0.05), rgba(17, 168, 160, 0.05) 55%, rgba(109, 74, 217, 0.06));
  border-block: 1px solid var(--line);
}

.section-head {
  display: grid; grid-template-columns: max-content minmax(0, 1fr);
  gap: 1.25rem; align-items: start;
  padding-bottom: 0.85rem; margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--line);
}
.section-head h2 { max-width: 26ch; }

.split, .hero-content {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem; align-items: start;
}
.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.feature-grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.topic-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 0.8rem; }
.stat-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; }

/* Navigation */
.nav {
  position: fixed; inset: 0 0 auto; z-index: 100;
  background: rgba(245, 247, 251, 0.92);
  border-bottom: 1px solid rgba(13, 74, 158, 0.12);
  box-shadow: 0 14px 34px -32px rgba(12, 26, 42, 0.5);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
}
.nav-inner {
  min-height: var(--nav-height); max-width: var(--container);
  margin: 0 auto; padding: 0.55rem var(--gutter);
  display: flex; align-items: center; justify-content: space-between; gap: 1.25rem;
}
.brand { display: flex; align-items: center; gap: 0.7rem; min-width: max-content; font-weight: 800; }
.brand img { width: 46px; height: 46px; border-radius: 13px; }
.brand-text { line-height: 1.08; font-size: 1.05rem; }
.brand-text small {
  display: block; margin-top: 0.16rem;
  color: var(--cyan); font-size: 0.74rem; font-weight: 600;
  letter-spacing: 0.02em;
}
.nav-links {
  display: flex; align-items: center; gap: 0.22rem;
  padding: 0; margin: 0; list-style: none;
}
.nav-links a, .nav-toggle, .btn {
  display: inline-flex; min-height: 40px; align-items: center;
  justify-content: center; border-radius: 999px; font-weight: 700;
}
.nav-links a { padding: 0 0.62rem; color: var(--ink); font-size: 0.9rem; }
.nav-links a:hover, .nav-links a.active {
  color: var(--blue); background: rgba(13, 74, 158, 0.08);
}
.nav-links .lang-switch {
  gap: 0.4rem; padding: 0 0.85rem; color: var(--blue);
  border: 1px solid rgba(13, 74, 158, 0.32);
}
.nav-links .lang-switch:hover { color: var(--blue); background: rgba(13, 74, 158, 0.07); }
.lang-switch-icon { font-size: 1rem; line-height: 1; }
.nav-toggle {
  display: none; gap: 0.5rem; flex-shrink: 0;
  min-width: 48px; min-height: 48px;
  padding: 0 0.95rem; color: var(--blue);
  background: #fff; border: 1px solid rgba(13, 74, 158, 0.42);
  font-family: var(--font-body); font-size: 0.9rem; cursor: pointer;
}
.nav-toggle:hover { background: rgba(13, 74, 158, 0.07); }
.nav-toggle-text { white-space: nowrap; }

/* hamburger icon: middle bar is the span, outer bars are pseudo-elements */
.nav-toggle-icon {
  position: relative; display: block;
  width: 18px; height: 2px; border-radius: 2px;
  background: currentColor;
  transition: background 0.16s ease;
}
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: ''; position: absolute; left: 0;
  width: 18px; height: 2px; border-radius: 2px;
  background: currentColor;
  transition: transform 0.16s ease;
}
.nav-toggle-icon::before { transform: translateY(-6px); }
.nav-toggle-icon::after { transform: translateY(6px); }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before { transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after { transform: rotate(-45deg); }

/* Buttons */
.btn { gap: 0.55rem; padding: 0 1.25rem; border: 1px solid transparent; font-size: 0.95rem; transition: transform 0.15s ease, box-shadow 0.15s ease; }
.btn:hover { transform: translateY(-1px); }
.btn .arrow { transition: transform 0.15s ease; }
.btn:hover .arrow { transform: translateX(3px); }
.btn-primary {
  color: #fff; background: linear-gradient(135deg, var(--blue), var(--violet));
  box-shadow: 0 12px 26px -18px rgba(13, 74, 158, 0.7);
}
.btn-ghost {
  color: var(--ink); border-color: rgba(13, 74, 158, 0.26);
  background: rgba(255, 255, 255, 0.4);
}
.btn-ghost:hover { background: rgba(13, 74, 158, 0.08); }
.hero-ctas, .cta-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 1.25rem; }

/* Hero */
.hero { padding-top: 1.25rem; padding-bottom: 2.25rem; }
.hero-text .eyebrow { margin-bottom: 1rem; }
.hero-title { max-width: 16ch; margin-top: 0.4rem; font-size: 3.6rem; }
.hero-title-line { display: block; }
.hero-text .lede { margin-top: 1.2rem; }

.hero-visual {
  position: relative; align-self: stretch;
  min-height: 340px; padding: 1.4rem;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(13,74,158,0.06), rgba(17,168,160,0.06) 55%, rgba(109,74,217,0.08));
  box-shadow: var(--shadow); overflow: hidden;
}
.hero-visual svg { width: 100%; height: 100%; }

/* Page hero */
.page-hero { padding: 1.75rem 0 2.25rem; background: rgba(255, 255, 255, 0.34); }
.page-hero h1 { max-width: 20ch; margin-top: 0.7rem; }
.page-hero .lede { margin-top: 1rem; }
.breadcrumb { margin: 0 0 1.2rem; color: var(--ink-soft); }
.breadcrumb .sep { margin: 0 0.55rem; }

/* Cards / panels */
.feature, .info-card, .topic, .stat, .person, .tier {
  padding: 1.5rem; background: var(--panel);
  border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.feature { display: flex; flex-direction: column; gap: 0.5rem; }
.feature .num {
  margin-bottom: 0.4rem; font-family: var(--font-mono);
  font-size: 0.95rem; letter-spacing: 0.06em; color: var(--cyan);
}
.feature h3 .en-sub { color: var(--ink-soft); }
.feature p, .info-card p { color: var(--ink-soft); margin-bottom: 0; }
.feature ul, .info-card ul { margin: 0.4rem 0 0; padding-left: 1.15rem; color: var(--ink-soft); }
.feature li, .info-card li { margin-bottom: 0.45rem; }
.feature li strong, .info-card li strong { color: var(--ink); }

.card-accent { border-top: 3px solid var(--blue); }
.card-accent.a2 { border-top-color: var(--cyan); }
.card-accent.a3 { border-top-color: var(--violet); }
.card-accent.a4 { border-top-color: var(--sun); }

/* Stats */
.stat { text-align: center; gap: 0.35rem; display: flex; flex-direction: column; }
.stat .n { font-size: 2.6rem; font-weight: 800; line-height: 1; color: transparent; background: var(--gradient); -webkit-background-clip: text; background-clip: text; }
.stat-label { color: var(--ink-soft); }
.stat .desc { font-size: 0.95rem; color: var(--ink-soft); margin: 0; }

/* Concept / pillars */
.pillar-list { display: grid; gap: 0.9rem; }
.pillar {
  display: grid; grid-template-columns: 56px minmax(0,1fr); gap: 1rem;
  align-items: start; padding: 1.2rem 1.3rem;
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.pillar .idx {
  display: grid; place-items: center; width: 48px; height: 48px;
  border-radius: 12px; color: #fff; font-weight: 800; font-size: 1.2rem;
  background: var(--gradient);
}
.pillar h3 { margin-bottom: 0.3rem; }
.pillar p { margin: 0; color: var(--ink-soft); font-size: 0.98rem; }

/* Marquee */
.marquee {
  overflow: hidden; padding: 0.9rem 0; white-space: nowrap;
  background: rgba(255, 255, 255, 0.36); border-block: 1px solid var(--line);
}
.marquee-track { display: inline-block; animation: marquee 42s linear infinite; font-weight: 800; }
.marquee-track span { margin: 0 1.3rem; }
.marquee-track em { color: var(--cyan); font-style: normal; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* Timeline */
.timeline { border-top: 1px solid var(--line); }
.timeline-row {
  display: grid; grid-template-columns: 170px minmax(0, 1fr) auto;
  gap: 1.5rem; align-items: baseline; padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
}
.timeline-date { color: var(--blue); font-weight: 800; }
.timeline-title { font-weight: 700; }
.timeline-title .desc { display: block; font-weight: 400; color: var(--ink-soft); font-size: 0.95rem; margin-top: 0.2rem; }
.timeline-tag {
  display: inline-flex; width: fit-content; align-items: center;
  padding: 0.25rem 0.7rem; color: var(--cyan);
  background: rgba(17, 168, 160, 0.12); border-radius: 999px;
  font-family: var(--font-mono); font-size: 0.88rem; letter-spacing: 0.05em;
}
.timeline-tag.t2 { color: var(--violet); background: rgba(109, 74, 217, 0.12); }
.timeline-tag.t3 { color: var(--clay); background: rgba(184, 92, 58, 0.12); }

/* Org chart */
.org { display: grid; gap: 1rem; justify-items: center; }
.org-node {
  width: min(560px, 100%); padding: 1.1rem 1.4rem; text-align: center;
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.org-node.top { color: #fff; background: var(--gradient); border: 0; }
.org-node h3 { font-size: 1.15rem; }
.org-node p { margin: 0.25rem 0 0; color: var(--ink-soft); font-size: 0.95rem; }
.org-node.top p { color: rgba(255,255,255,0.85); }
.org-connector { width: 2px; height: 18px; background: var(--line); }
.org-divisions { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 1rem; width: 100%; }
.org-divisions .org-node { width: 100%; }

/* Table */
.table-scroll {
  overflow-x: auto; background: rgba(255, 255, 255, 0.86);
  border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
}
table.data {
  width: 100%; min-width: 620px; border-collapse: collapse; font-size: 0.95rem;
}
table.data th, table.data td {
  padding: 0.7rem 0.85rem; border: 1px solid var(--line); text-align: left; vertical-align: top;
}
table.data thead th { color: #fff; background: var(--blue); font-weight: 700; }
table.data tbody tr:nth-child(even) { background: rgba(13, 74, 158, 0.04); }
table.data tfoot td { font-weight: 800; background: rgba(17, 168, 160, 0.1); }

/* Footer */
.footer {
  padding: 1.5rem 0 1rem;
  background: rgba(234, 242, 251, 0.82);
  border-top: 1px solid rgba(13, 74, 158, 0.16);
}
.footer a:hover { color: var(--blue); }
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 1.5rem; align-items: start;
}
.footer-logo { width: 60px; height: 60px; margin-bottom: 0.75rem; border-radius: 14px; }
.footer-brand p, .footer-col a, .footer-col li, .footer-base {
  color: var(--ink-soft); font-size: 0.95rem;
}
.footer-col ul { padding: 0; margin: 0.65rem 0 0; list-style: none; }
.footer-col li { margin-bottom: 0.4rem; line-height: 1.5; }
.footer-base {
  display: grid; gap: 0.25rem; justify-items: center; text-align: center;
  padding-top: 1rem; margin-top: 1.25rem; font-size: 0.9rem;
  border-top: 1px solid rgba(13, 74, 158, 0.14);
}

/* Launch status badge */
.launch-badge {
  display: inline-flex; align-items: center; gap: 0.55rem;
  margin-bottom: 1.1rem; padding: 0.5rem 1.05rem;
  color: #fff; background: var(--gradient);
  border-radius: 999px; font-weight: 800; font-size: 0.95rem;
  box-shadow: 0 12px 26px -18px rgba(13, 74, 158, 0.7);
}
.launch-badge .dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: #7dffd4; box-shadow: 0 0 0 4px rgba(125, 255, 212, 0.25);
}

/* Quick facts (launch info) */
.fact-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 0.9rem; }
.fact {
  padding: 1.1rem 1.25rem; background: var(--panel);
  border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
}
.fact .fact-label {
  display: block; margin-bottom: 0.3rem; color: var(--cyan);
  font-family: var(--font-mono); font-size: 0.92rem;
  letter-spacing: 0.06em;
}
.fact .fact-value { font-weight: 800; line-height: 1.45; overflow-wrap: anywhere; }
.fact .fact-note { display: block; margin-top: 0.15rem; color: var(--ink-soft); font-size: 0.92rem; font-weight: 400; }

/* Status tags */
.status-tag {
  display: inline-flex; align-items: center; gap: 0.35rem;
  width: fit-content; padding: 0.28rem 0.8rem; border-radius: 999px;
  font-family: var(--font-mono); font-size: 0.88rem; font-weight: 500;
  letter-spacing: 0.05em; white-space: nowrap;
}
.status-tag.st-done { color: #0e7a45; background: rgba(24, 160, 94, 0.14); }
.status-tag.st-active { color: var(--cyan); background: rgba(17, 168, 160, 0.13); }
.status-tag.st-soon { color: var(--blue); background: rgba(13, 74, 158, 0.1); }
.status-tag.st-planned { color: var(--violet); background: rgba(109, 74, 217, 0.12); }
.status-tag.st-pending { color: var(--clay); background: rgba(184, 92, 58, 0.12); }

/* First-wave work list */
.work-list { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 0.9rem; }
.work-item {
  display: flex; flex-direction: column; gap: 0.45rem;
  padding: 1.15rem 1.3rem; background: var(--panel);
  border: 1px solid var(--line); border-left: 3px solid var(--cyan);
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.work-item h3 { font-size: 1.05rem; }
.work-item p { margin: 0; color: var(--ink-soft); font-size: 0.96rem; }

/* News */
.news-list { display: grid; gap: 0.9rem; }
.news-item {
  display: grid; grid-template-columns: 130px minmax(0,1fr); gap: 1.2rem;
  align-items: start; padding: 1.2rem 1.35rem;
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.news-date { color: var(--blue); font-family: var(--font-mono); font-size: 0.95rem; font-weight: 500; letter-spacing: 0.05em; }
.news-item h3 { font-size: 1.08rem; margin-bottom: 0.3rem; }
.news-item h3 a:hover { color: var(--blue); }
.news-item p { margin: 0; color: var(--ink-soft); font-size: 0.98rem; }
.news-item .status-tag { margin-bottom: 0.45rem; }

/* Preparation progress (cards, mobile friendly) */
.progress-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 0.9rem; }
.progress-card {
  display: flex; flex-direction: column; gap: 0.5rem;
  padding: 1.1rem 1.25rem; background: var(--panel);
  border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
}
.progress-card h3 { font-size: 1.02rem; }
.progress-card .eta { color: var(--ink-soft); font-size: 0.92rem; }

/* Contact cards */
.contact-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 1rem; }
.contact-card {
  padding: 1.5rem; background: var(--panel);
  border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
}
.contact-card h3 { margin-bottom: 0.6rem; }
.contact-card ul { margin: 0; padding: 0; list-style: none; color: var(--ink-soft); }
.contact-card li { margin-bottom: 0.5rem; line-height: 1.55; overflow-wrap: anywhere; }
.contact-card li strong { color: var(--ink); }
.contact-card a { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }
.contact-note { max-width: 70ch; color: var(--ink-soft); font-size: 0.96rem; }

/* Footer contact & meta */
.footer-contact { margin: 0.35rem 0 0; padding: 0; list-style: none; }
.footer-contact li { margin-bottom: 0.3rem; line-height: 1.5; overflow-wrap: anywhere; }
.footer-base .last-updated { color: var(--ink-soft); }

/* Reveal animation */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* Utilities */
.mt-1 { margin-top: 1rem; } .mt-2 { margin-top: 1.5rem; } .mt-3 { margin-top: 2rem; }
.mb-0 { margin-bottom: 0; } .tc { text-align: center; }
.max-70 { max-width: 70ch; } .max-60 { max-width: 60ch; }
.lead-block { max-width: 70ch; }

/* Responsive */
@media (max-width: 1100px) {
  .nav-links a { padding-inline: 0.4rem; font-size: 0.85rem; }
}
@media (max-width: 900px) {
  :root { --gutter: 1rem; --nav-height: 72px; }
  h1 { font-size: 2.4rem; } .hero-title { font-size: 2.5rem; }
  h2 { font-size: 1.9rem; } h3 { font-size: 1.2rem; }
  section { padding: 2rem 0; }
  .section-head, .split, .hero-content, .feature-grid, .feature-grid.cols-3,
  .stat-grid, .org-divisions, .footer-grid { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .section-head { gap: 0.4rem; margin-bottom: 1.2rem; }
  .nav-toggle { display: inline-flex; }

  /* dimmed, blurred backdrop behind the slide-out drawer */
  body::before {
    content: ''; position: fixed; inset: 0; z-index: 99;
    background: rgba(12, 26, 42, 0.38);
    -webkit-backdrop-filter: blur(3px); backdrop-filter: blur(3px);
    opacity: 0; pointer-events: none;
    transition: opacity 0.22s ease;
  }
  body.menu-open::before { opacity: 1; pointer-events: auto; }

  /* .nav-links goes position:fixed below, leaving its <nav> wrapper as an
     empty flex item that pushes the toggle away from the right edge */
  .nav-inner nav { display: contents; }

  /* right-side slide-out drawer under the fixed navbar */
  .nav-links {
    position: fixed; top: var(--nav-height); right: 0; left: auto;
    display: grid; align-content: start; gap: 0.15rem;
    width: min(360px, 88vw);
    height: calc(100vh - var(--nav-height));
    height: calc(100dvh - var(--nav-height));
    padding: 0.9rem 0.9rem calc(1.5rem + env(safe-area-inset-bottom));
    overflow-y: auto; overscroll-behavior: contain;
    background: rgba(245, 247, 251, 0.92);
    -webkit-backdrop-filter: blur(18px); backdrop-filter: blur(18px);
    border-left: 1px solid rgba(13, 74, 158, 0.18);
    box-shadow: -28px 0 56px -34px rgba(12, 26, 42, 0.45);
    visibility: hidden; transform: translateX(100%);
    transition: transform 0.24s ease, visibility 0s linear 0.24s;
  }
  .nav-links.open {
    visibility: visible; transform: translateX(0);
    transition: transform 0.24s ease;
  }
  .nav-links a { justify-content: flex-start; width: 100%; min-height: 48px; padding: 0 0.8rem; border-radius: var(--radius); font-size: 1rem; }
  .nav-links .lang-switch { justify-content: flex-start; margin-top: 0.35rem; }
  .btn { min-height: 48px; }
  .brand-text small { display: none; }
  .brand { min-width: 0; }
  .hero-title, .page-hero h1 { max-width: 100%; }
  .timeline-row { grid-template-columns: 1fr; gap: 0.35rem; }
  .pillar { grid-template-columns: 44px minmax(0,1fr); }
  .work-list, .progress-grid, .contact-grid { grid-template-columns: 1fr; }
  .fact-grid { grid-template-columns: 1fr; }
  .news-item { grid-template-columns: 1fr; gap: 0.35rem; }
}
@media (max-width: 600px) {
  .brand-text small { display: none; }
  .brand { min-width: 0; }
  .nav-toggle { min-width: 48px; min-height: 48px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}