/* ============================================================
   PDM Copilot Website — Design System
   Color: Deep Navy + Tech Blue + Neon Cyan + White
   ============================================================ */

/* Self-hosted fonts — no fonts.googleapis.com (mainland-China friendly) */
@import url('fonts.css');

:root {
  --c-navy:       #0A1628;
  --c-navy-2:     #0D1E35;
  --c-navy-3:     #0F2543;
  --c-blue:       #0066CC;
  --c-blue-light: #1A7FE8;
  --c-cyan:       #00D4FF;
  --c-cyan-dim:   rgba(0,212,255,0.12);
  --c-cyan-glow:  rgba(0,212,255,0.4);
  --c-white:      #FFFFFF;
  --c-off-white:  #EEF6FF;
  --c-bg-light:   #F0F7FF;
  --c-text-dark:  #0A1628;
  --c-text-body:  #2D4A6A;
  --c-text-muted: #6B8CAD;
  --c-border-d:   rgba(0,212,255,0.18);
  --c-border-l:   rgba(0,102,204,0.14);

  --r-card:   12px;
  --r-btn:    8px;
  --nav-h:    72px;
  --sec-py:   100px;
  --max-w:    1200px;

  --shadow-glow: 0 0 32px rgba(0,212,255,0.3);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.10);
  --shadow-card-d: 0 4px 32px rgba(0,0,0,0.35);
}

/* ── Reset ─────────────────────────────────────────────────── */
*,*::before,*::after { box-sizing:border-box; margin:0; padding:0; }
html { scroll-behavior:smooth; }
body {
  font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;
  color:var(--c-text-dark);
  background:var(--c-white);
  line-height:1.6;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,h6 { font-weight:700; line-height:1.2; }
h1 { font-size:clamp(2rem,5vw,3.5rem); }
h2 { font-size:clamp(1.6rem,3vw,2.6rem); }
h3 { font-size:clamp(1.15rem,2vw,1.5rem); }
p  { line-height:1.75; }
a  { text-decoration:none; color:inherit; }
img { max-width:100%; display:block; }

/* ── Navigation ─────────────────────────────────────────────── */
.nav {
  position:fixed; top:0; left:0; right:0;
  height:var(--nav-h); z-index:200;
  padding:0 5%;
  transition:background .3s,box-shadow .3s;
}
.nav.transparent { background:transparent; }
.nav.scrolled {
  background:rgba(10,22,40,.96);
  backdrop-filter:blur(18px);
  box-shadow:0 1px 0 var(--c-border-d);
}
.nav.light {
  background:rgba(255,255,255,.97);
  backdrop-filter:blur(18px);
  box-shadow:0 1px 0 var(--c-border-l);
}
.nav-inner {
  height:100%; display:flex; align-items:center;
  justify-content:space-between;
  max-width:var(--max-w); margin:0 auto;
}
.nav-logo {
  display:flex; align-items:center; gap:10px;
  font-family:'Orbitron',sans-serif;
  font-size:.95rem; font-weight:700;
  color:var(--c-cyan); letter-spacing:.04em;
}
.nav-logo img { height:30px; width:auto; filter:brightness(0) invert(1); }
.nav.light .nav-logo { color:var(--c-blue); }
.nav.light .nav-logo img { filter:none; }

.nav-links {
  display:flex; align-items:center; gap:28px; list-style:none;
}
.nav-links a {
  font-size:.88rem; font-weight:500;
  color:rgba(255,255,255,.8);
  transition:color .2s;
  position:relative;
}
.nav-links a::after {
  content:''; position:absolute; bottom:-4px; left:0;
  width:0; height:2px; background:var(--c-cyan);
  transition:width .3s;
}
.nav-links a:hover { color:var(--c-cyan); }
.nav-links a:hover::after { width:100%; }
.nav.light .nav-links a { color:var(--c-text-body); }
.nav.light .nav-links a:hover { color:var(--c-blue); }
.nav.light .nav-links a::after { background:var(--c-blue); }

.nav-cta {
  background:linear-gradient(135deg,var(--c-blue),var(--c-cyan)) !important;
  color:#fff !important; padding:8px 20px; border-radius:var(--r-btn);
  font-weight:600 !important;
  transition:transform .2s,box-shadow .2s !important;
}
.nav-cta::after { display:none !important; }
.nav-cta:hover {
  transform:translateY(-2px) !important;
  box-shadow:0 8px 24px rgba(0,102,204,.4) !important;
}
.nav-hamburger {
  display:none; flex-direction:column; gap:5px;
  cursor:pointer; padding:4px; background:none; border:none;
}
.nav-hamburger span {
  width:24px; height:2px; background:#fff;
  border-radius:2px; transition:all .3s; display:block;
}
.nav.light .nav-hamburger span { background:var(--c-text-dark); }
.nav-mobile {
  display:none; position:fixed;
  top:var(--nav-h); left:0; right:0;
  background:rgba(10,22,40,.97); backdrop-filter:blur(18px);
  padding:16px 5%; flex-direction:column;
  z-index:199; border-top:1px solid var(--c-border-d);
}
.nav-mobile.open { display:flex; }
.nav-mobile a {
  display:block; padding:13px 0; font-size:1rem;
  color:rgba(255,255,255,.82); border-bottom:1px solid rgba(255,255,255,.07);
  transition:color .2s;
}
.nav-mobile a:hover { color:var(--c-cyan); }
.nav-mobile a:last-child { border:none; }

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display:inline-flex; align-items:center; gap:8px;
  padding:14px 32px; border-radius:var(--r-btn);
  font-size:1rem; font-weight:600; cursor:pointer; border:none;
  transition:all .3s cubic-bezier(.2,0,0,1);
  text-decoration:none; position:relative; overflow:hidden;
}
.btn::before {
  content:''; position:absolute; inset:0; opacity:0;
  transition:opacity .3s; border-radius:var(--r-btn);
}
.btn:hover::before { opacity:1; }

.btn-primary {
  background:linear-gradient(135deg,var(--c-blue) 0%,var(--c-cyan) 100%);
  color:#fff;
  box-shadow:0 4px 18px rgba(0,102,204,.35);
}
.btn-primary::before { background:linear-gradient(135deg,var(--c-cyan) 0%,var(--c-blue) 100%); }
.btn-primary:hover {
  transform:translateY(-3px);
  box-shadow:0 10px 36px rgba(0,212,255,.45), 0 0 60px rgba(0,212,255,.15);
  color:#fff;
}
.btn-primary span { position:relative; z-index:1; }

.btn-secondary {
  background:transparent; color:var(--c-cyan);
  border:2px solid rgba(0,212,255,.7);
}
.btn-secondary::before { background:var(--c-cyan); }
.btn-secondary:hover {
  color:var(--c-navy); transform:translateY(-3px);
  box-shadow:0 8px 28px var(--c-cyan-glow);
  border-color:var(--c-cyan);
}

.btn-outline {
  background:transparent; color:var(--c-blue);
  border:2px solid var(--c-blue);
}
.btn-outline:hover {
  background:var(--c-blue); color:#fff;
  transform:translateY(-3px);
  box-shadow:0 8px 24px rgba(0,102,204,.3);
}

.btn-sm { padding:10px 22px; font-size:.88rem; }
.btn-lg { padding:17px 40px; font-size:1.05rem; }

/* ── Layout ──────────────────────────────────────────────────── */
.section { padding:var(--sec-py) 5%; }
.section-inner { max-width:var(--max-w); margin:0 auto; }
.section-dark {
  background:linear-gradient(160deg,var(--c-navy) 0%,var(--c-navy-2) 100%);
  color:#fff;
}
.section-alt { background:var(--c-bg-light); }

.section-label {
  display:inline-flex; align-items:center; gap:8px;
  font-size:.78rem; font-weight:600; letter-spacing:.12em;
  text-transform:uppercase; color:var(--c-cyan); margin-bottom:14px;
}
.section-label::before { content:''; width:24px; height:2px; background:var(--c-cyan); }
.section-label.dark-mode { color:var(--c-blue); }
.section-label.dark-mode::before { background:var(--c-blue); }

.section-title { margin-bottom:14px; color:var(--c-text-dark); }
.section-title.on-dark { color:#fff; }
.section-subtitle {
  font-size:1.1rem; color:var(--c-text-muted);
  max-width:560px; line-height:1.75;
}
.section-subtitle.on-dark { color:rgba(255,255,255,.58); }
.section-header { margin-bottom:60px; }
.center { text-align:center; }
.center .section-subtitle { margin-left:auto; margin-right:auto; }
.center .section-label::before { display:none; }

/* ── Cards ───────────────────────────────────────────────────── */
.card {
  background:#fff; border-radius:var(--r-card); padding:32px;
  box-shadow:var(--shadow-card); border:1px solid var(--c-border-l);
  transition:transform .3s,box-shadow .3s;
}
.card:hover {
  transform:translateY(-6px);
  box-shadow:0 16px 44px rgba(0,102,204,.14);
}
.card-dark {
  background:rgba(255,255,255,.04);
  border:1px solid var(--c-border-d);
  border-radius:var(--r-card); padding:32px;
  transition:transform .3s,box-shadow .3s,border-color .3s;
}
.card-dark:hover {
  transform:translateY(-6px);
  border-color:rgba(0,212,255,.5);
  box-shadow:0 10px 44px rgba(0,212,255,.14);
}

/* ── Feature Icons ───────────────────────────────────────────── */
.f-icon {
  width:56px; height:56px; border-radius:12px;
  display:flex; align-items:center; justify-content:center;
  font-size:1.5rem; margin-bottom:20px;
  background:linear-gradient(135deg,rgba(0,102,204,.12),rgba(0,212,255,.12));
  border:1px solid rgba(0,212,255,.22);
}
.f-icon.lg { width:72px; height:72px; border-radius:16px; font-size:2rem; }

/* ── Grid ────────────────────────────────────────────────────── */
.grid-2 { display:grid; grid-template-columns:repeat(2,1fr); gap:32px; }
.grid-3 { display:grid; grid-template-columns:repeat(3,1fr); gap:32px; }
.grid-4 { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; }

/* ── Badges / Tags ───────────────────────────────────────────── */
.badge {
  display:inline-flex; align-items:center; gap:6px;
  padding:5px 14px; border-radius:20px;
  font-size:.78rem; font-weight:600; letter-spacing:.04em;
}
.badge-cyan {
  background:rgba(0,212,255,.1); color:var(--c-cyan);
  border:1px solid rgba(0,212,255,.28);
}
.badge-blue {
  background:rgba(0,102,204,.1); color:var(--c-blue);
  border:1px solid rgba(0,102,204,.24);
}
.badge-green {
  background:rgba(0,200,100,.1); color:#00C864;
  border:1px solid rgba(0,200,100,.24);
}
.badge-orange {
  background:rgba(255,160,0,.1); color:#FFA000;
  border:1px solid rgba(255,160,0,.24);
}

/* ── Dividers ────────────────────────────────────────────────── */
.divider-glow {
  height:1px;
  background:linear-gradient(90deg,transparent,var(--c-cyan),transparent);
}

/* ── Page Hero (non-index) ───────────────────────────────────── */
.page-hero {
  background:linear-gradient(140deg,var(--c-navy) 0%,var(--c-navy-3) 100%);
  padding:calc(var(--nav-h) + 64px) 5% 80px;
  position:relative; overflow:hidden;
}
.page-hero::after {
  content:''; position:absolute; inset:0;
  background:radial-gradient(ellipse at 75% 50%,rgba(0,212,255,.07) 0%,transparent 60%);
  pointer-events:none;
}
.page-hero-inner { max-width:var(--max-w); margin:0 auto; position:relative; }
.page-hero h1 { color:#fff; margin-bottom:14px; }
.page-hero .lead { color:rgba(255,255,255,.62); font-size:1.15rem; max-width:560px; }

/* ── Footer ──────────────────────────────────────────────────── */
.footer {
  background:var(--c-navy); color:rgba(255,255,255,.65);
  padding:64px 5% 32px;
}
.footer-inner { max-width:var(--max-w); margin:0 auto; }
.footer-grid {
  display:grid; grid-template-columns:2fr 1fr 1fr 1fr 1fr;
  gap:40px; margin-bottom:48px;
}
.footer-brand .nav-logo { color:var(--c-cyan); margin-bottom:14px; display:flex; }
.footer-brand p {
  font-size:.88rem; color:rgba(255,255,255,.5);
  line-height:1.75; max-width:280px;
}
.footer-social { display:flex; gap:12px; margin-top:22px; }
.footer-social a {
  width:36px; height:36px; border-radius:8px;
  border:1px solid rgba(255,255,255,.15);
  display:flex; align-items:center; justify-content:center;
  font-size:.85rem; color:rgba(255,255,255,.55);
  transition:all .2s; text-decoration:none;
}
.footer-social a:hover {
  border-color:var(--c-cyan); color:var(--c-cyan);
  background:rgba(0,212,255,.08);
}
.footer-col h4 {
  font-size:.8rem; font-weight:600; color:#fff;
  text-transform:uppercase; letter-spacing:.1em; margin-bottom:18px;
}
.footer-col ul { list-style:none; display:flex; flex-direction:column; gap:11px; }
.footer-col a {
  font-size:.88rem; color:rgba(255,255,255,.52); transition:color .2s;
}
.footer-col a:hover { color:var(--c-cyan); }
.footer-bottom {
  border-top:1px solid rgba(255,255,255,.09);
  padding-top:24px; display:flex;
  justify-content:space-between; align-items:center;
  font-size:.82rem; color:rgba(255,255,255,.38);
}

/* ── Scroll Animations ───────────────────────────────────────── */
[data-ani] { opacity:0; transform:translateY(28px); transition:opacity .65s,transform .65s; }
[data-ani].in { opacity:1; transform:none; }
[data-d="1"] { transition-delay:.1s; }
[data-d="2"] { transition-delay:.2s; }
[data-d="3"] { transition-delay:.3s; }
[data-d="4"] { transition-delay:.4s; }
[data-d="5"] { transition-delay:.5s; }
[data-d="6"] { transition-delay:.6s; }

/* ── Keyframes ───────────────────────────────────────────────── */
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-12px)} }
@keyframes pulse-ring {
  0%   { box-shadow:0 0 0 0 rgba(0,212,255,.4); }
  70%  { box-shadow:0 0 0 16px rgba(0,212,255,0); }
  100% { box-shadow:0 0 0 0 rgba(0,212,255,0); }
}
@keyframes typing-cursor { 0%,100%{opacity:1} 50%{opacity:0} }
@keyframes fade-up { from{opacity:0;transform:translateY(24px)} to{opacity:1;transform:none} }
@keyframes slide-in-right { from{opacity:0;transform:translateX(32px)} to{opacity:1;transform:none} }
@keyframes marquee { 0%{transform:translateX(0)} 100%{transform:translateX(-50%)} }

/* ── Code Block ──────────────────────────────────────────────── */
.code-block {
  background:rgba(0,0,0,.55); border:1px solid rgba(0,212,255,.2);
  border-radius:10px; padding:22px 26px;
  font-family:'Fira Code','Courier New',monospace;
  font-size:.88rem; color:#A8EFD8; overflow-x:auto;
  line-height:1.7;
}
.code-comment { color:#4DA6FF; }
.code-string  { color:#FFD580; }
.code-keyword { color:#C792EA; }
.code-fn      { color:#82AAFF; }

/* ── Chat Demo ───────────────────────────────────────────────── */
.chat-window {
  background:var(--c-navy-2); border:1px solid var(--c-border-d);
  border-radius:16px; overflow:hidden;
  box-shadow:var(--shadow-card-d), 0 0 60px rgba(0,212,255,.08);
}
.chat-topbar {
  background:var(--c-navy-3); padding:14px 20px;
  display:flex; align-items:center; gap:12px;
  border-bottom:1px solid var(--c-border-d);
}
.chat-dot { width:12px; height:12px; border-radius:50%; }
.chat-dot.red   { background:#FF5F57; }
.chat-dot.amber { background:#FEBC2E; }
.chat-dot.green { background:#28C840; }
.chat-topbar-title {
  margin-left:auto; margin-right:auto;
  font-size:.82rem; color:rgba(255,255,255,.5); letter-spacing:.06em;
}
.chat-body { padding:24px; display:flex; flex-direction:column; gap:16px; }
.chat-msg { display:flex; gap:12px; max-width:88%; }
.chat-msg.user { align-self:flex-end; flex-direction:row-reverse; }
.chat-avatar {
  width:34px; height:34px; border-radius:50%; flex-shrink:0;
  display:flex; align-items:center; justify-content:center;
  font-size:.8rem; font-weight:700;
}
.chat-avatar.ai {
  background:linear-gradient(135deg,var(--c-blue),var(--c-cyan));
  color:#fff;
}
.chat-avatar.user-av { background:rgba(255,255,255,.12); color:rgba(255,255,255,.7); }
.chat-bubble {
  background:rgba(255,255,255,.06); border:1px solid rgba(255,255,255,.08);
  border-radius:12px; padding:12px 16px;
  font-size:.9rem; color:rgba(255,255,255,.85); line-height:1.65;
}
.chat-msg.user .chat-bubble {
  background:rgba(0,102,204,.25); border-color:rgba(0,102,204,.4);
}
.chat-tool-call {
  display:inline-flex; align-items:center; gap:6px;
  background:rgba(0,212,255,.1); border:1px solid rgba(0,212,255,.25);
  border-radius:6px; padding:4px 10px;
  font-size:.78rem; color:var(--c-cyan); font-family:monospace;
  margin:4px 0;
}
.chat-result-grid {
  display:flex; flex-direction:column; gap:6px; margin-top:10px;
}
.chat-result-row {
  display:flex; align-items:center; gap:8px;
  font-size:.85rem; color:rgba(255,255,255,.75);
}
.chat-result-row .dot {
  width:6px; height:6px; border-radius:50%; flex-shrink:0;
}
.dot-cyan  { background:var(--c-cyan); }
.dot-blue  { background:var(--c-blue); }
.dot-warn  { background:#FFA000; }
.dot-green { background:#00C864; }

/* ── Accordion (FAQ) ─────────────────────────────────────────── */
.accordion-item {
  border:1px solid var(--c-border-l); border-radius:10px;
  margin-bottom:12px; overflow:hidden;
  transition:box-shadow .2s;
}
.accordion-item:hover { box-shadow:0 4px 16px rgba(0,102,204,.1); }
.accordion-item.open { box-shadow:0 4px 20px rgba(0,102,204,.12); }
.accordion-trigger {
  width:100%; display:flex; align-items:center;
  justify-content:space-between; padding:20px 24px;
  background:none; border:none; cursor:pointer; text-align:left;
  font-size:1rem; font-weight:600; color:var(--c-text-dark);
  gap:16px;
}
.accordion-trigger .chevron {
  width:20px; height:20px; flex-shrink:0; color:var(--c-blue);
  transition:transform .3s;
}
.accordion-item.open .chevron { transform:rotate(180deg); }
.accordion-body {
  display:none; padding:0 24px 22px;
  font-size:.95rem; color:var(--c-text-body); line-height:1.75;
}
.accordion-item.open .accordion-body { display:block; }

/* ── Step Timeline ───────────────────────────────────────────── */
.steps { display:flex; flex-direction:column; gap:0; }
.step {
  display:flex; gap:32px; align-items:flex-start;
  padding:32px 0; border-left:2px solid rgba(0,212,255,.2);
  padding-left:40px; position:relative;
  transition:border-color .3s;
}
.step:hover { border-left-color:var(--c-cyan); }
.step:last-child { border-left-color:transparent; }
.step-num {
  position:absolute; left:-21px; top:32px;
  width:40px; height:40px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  background:linear-gradient(135deg,var(--c-blue),var(--c-cyan));
  color:#fff; font-weight:700; font-size:.9rem;
  box-shadow:0 0 0 6px rgba(0,212,255,.1);
  flex-shrink:0;
}
.step-content h3 { margin-bottom:8px; }
.step-content p { color:var(--c-text-muted); font-size:.95rem; }

/* ── Stats ───────────────────────────────────────────────────── */
.stat-card { text-align:center; padding:32px 24px; }
.stat-number {
  font-size:clamp(2.2rem,5vw,3.5rem); font-weight:800;
  line-height:1; margin-bottom:8px;
  background:linear-gradient(135deg,var(--c-blue),var(--c-cyan));
  -webkit-background-clip:text; -webkit-text-fill-color:transparent;
  background-clip:text;
}
.stat-label { font-size:.92rem; color:var(--c-text-muted); font-weight:500; }

/* ── News Cards ──────────────────────────────────────────────── */
.news-meta {
  display:flex; align-items:center; gap:12px;
  font-size:.8rem; color:var(--c-text-muted);
  margin-bottom:14px; flex-wrap:wrap;
}
.news-title {
  font-size:1.1rem; font-weight:700; color:var(--c-text-dark);
  margin-bottom:10px; line-height:1.4;
  transition:color .2s;
}
.news-title:hover { color:var(--c-blue); }
.news-summary { font-size:.9rem; color:var(--c-text-body); line-height:1.7; }
.news-read-more {
  display:inline-flex; align-items:center; gap:6px;
  font-size:.88rem; font-weight:600; color:var(--c-blue);
  margin-top:14px; transition:gap .2s;
}
.news-read-more:hover { gap:10px; color:var(--c-cyan); }

/* ── Post Content ────────────────────────────────────────────── */
.post-body { max-width:760px; }
.post-body h2 { margin:40px 0 16px; color:var(--c-text-dark); }
.post-body h3 { margin:28px 0 12px; color:var(--c-text-dark); }
.post-body p  { margin-bottom:18px; color:var(--c-text-body); }
.post-body ul,
.post-body ol { margin:12px 0 18px 24px; color:var(--c-text-body); }
.post-body li { margin-bottom:8px; line-height:1.7; }
.post-body code {
  background:rgba(0,102,204,.08); color:var(--c-blue);
  padding:2px 7px; border-radius:4px; font-size:.9em;
  font-family:'Fira Code','Courier New',monospace;
}
.post-body pre {
  background:#0A1628; border:1px solid var(--c-border-d);
  border-radius:10px; padding:20px 24px; overflow-x:auto;
  margin:20px 0;
}
.post-body pre code { background:none; color:#A8EFD8; padding:0; }

/* ── Contact ─────────────────────────────────────────────────── */
.contact-info-item {
  display:flex; align-items:flex-start; gap:16px;
  padding:20px 0; border-bottom:1px solid var(--c-border-l);
}
.contact-info-item:last-child { border:none; }
.contact-icon {
  width:44px; height:44px; border-radius:10px; flex-shrink:0;
  display:flex; align-items:center; justify-content:center;
  font-size:1.2rem;
  background:linear-gradient(135deg,rgba(0,102,204,.12),rgba(0,212,255,.12));
  border:1px solid rgba(0,212,255,.2);
}
.contact-form-group { margin-bottom:22px; }
.contact-form-group label {
  display:block; font-size:.88rem; font-weight:600;
  color:var(--c-text-dark); margin-bottom:8px;
}
.contact-form-group input,
.contact-form-group textarea,
.contact-form-group select {
  width:100%; padding:12px 16px;
  border:1.5px solid var(--c-border-l); border-radius:8px;
  font-size:.95rem; font-family:inherit; color:var(--c-text-dark);
  background:#fff; transition:border-color .2s, box-shadow .2s;
  outline:none; resize:vertical;
}
.contact-form-group input:focus,
.contact-form-group textarea:focus,
.contact-form-group select:focus {
  border-color:var(--c-blue);
  box-shadow:0 0 0 3px rgba(0,102,204,.12);
}
.contact-form-group textarea { min-height:130px; }

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width:1024px) {
  .grid-3 { grid-template-columns:repeat(2,1fr); }
  .grid-4 { grid-template-columns:repeat(2,1fr); }
  .footer-grid { grid-template-columns:1fr 1fr; gap:36px; }
  .page-hero { padding-bottom:60px; }
}
@media (max-width:768px) {
  :root { --sec-py:64px; }
  .nav-links { display:none; }
  .nav-hamburger { display:flex; }
  .grid-2,.grid-3 { grid-template-columns:1fr; }
  .grid-4 { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr; gap:28px; }
  .footer-bottom { flex-direction:column; gap:10px; text-align:center; }
  .step { padding-left:28px; }
  .section-header { margin-bottom:40px; }
  .page-hero { padding-bottom:48px; }
  .page-hero .lead { font-size:1rem; }
  .card { padding:24px; }
  .card-dark { padding:24px; }
}
@media (max-width:480px) {
  :root { --sec-py:48px; }
  .btn { padding:12px 22px; font-size:.9rem; }
  .btn-lg { padding:14px 26px; font-size:.95rem; }
  .card { padding:20px; }
  .card-dark { padding:20px; }
  .section-subtitle { font-size:1rem; }
  .badge { padding:4px 11px; font-size:.74rem; }
}

/* ── Scrollbar ───────────────────────────────────────────────── */
::-webkit-scrollbar { width:6px; }
::-webkit-scrollbar-track { background:var(--c-navy); }
::-webkit-scrollbar-thumb { background:var(--c-blue); border-radius:3px; }
::-webkit-scrollbar-thumb:hover { background:var(--c-cyan); }