/* ==========================================================================
   Dolphin Advanced Ceramic — design system
   Industrial, semiconductor-grade look: deep navy + cyan accent
   ========================================================================== */

:root {
  --bg: #ffffff;
  --bg-alt: #f2f6f9;
  --ink: #0f2230;
  --muted: #55697a;
  --line: #e1e9f0;

  --navy: #071724;
  --navy-2: #0b2334;
  --navy-3: #10314a;

  --cyan: #14b8ce;
  --cyan-dark: #0d93a7;
  --cyan-soft: rgba(20, 184, 206, 0.12);

  --wa: #25d366;
  --wa-dark: #1da851;

  --radius: 14px;
  --shadow: 0 10px 30px rgba(7, 23, 36, 0.10);
  --shadow-lg: 0 24px 60px rgba(7, 23, 36, 0.22);
  --font-display: "Sora", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;
  --wrap: 1180px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--cyan-dark); text-decoration: none; }
a:hover { color: var(--cyan); }

h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.18; color: inherit; }

.wrap { width: min(var(--wrap), 92%); margin-inline: auto; }

.section { padding: clamp(56px, 8vw, 96px) 0; }
.section.alt { background: var(--bg-alt); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan-dark);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--cyan);
  border-radius: 2px;
}

.section-title { font-size: clamp(26px, 3.4vw, 38px); font-weight: 700; margin-bottom: 14px; }
.section-lead { color: var(--muted); max-width: 760px; font-size: 17px; }
.center { text-align: center; }
.center .section-lead { margin-inline: auto; }
.center .eyebrow { justify-content: center; }

/* --------------------------------------------------------------------------
   Header / navigation
   -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 23, 36, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 70px;
}

.brand { display: flex; align-items: center; gap: 11px; color: #fff; }
.brand:hover { color: #fff; }
.brand-mark { width: 38px; height: 38px; flex: none; }
.brand-text {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 400;
  letter-spacing: 0.06em;
  line-height: 1.25;
  white-space: nowrap;
}
.brand-text b { display: block; font-weight: 800; font-size: 17px; letter-spacing: 0.04em; }
.brand-text b em { font-style: normal; color: var(--cyan); }

.nav { display: flex; align-items: center; gap: 26px; }
.nav > a {
  color: rgba(255, 255, 255, 0.82);
  font-weight: 500;
  font-size: 15px;
  position: relative;
  padding: 6px 0;
}
.nav > a:hover, .nav > a.active { color: #fff; }
.nav > a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
}

/* WhatsApp button — top right */
.wa-btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: var(--wa);
  color: #fff !important;
  font-weight: 700;
  font-size: 14.5px;
  padding: 10px 18px;
  border-radius: 999px;
  box-shadow: 0 6px 18px rgba(37, 211, 102, 0.35);
  transition: transform 0.2s, background 0.2s;
  white-space: nowrap;
}
.wa-btn:hover { background: var(--wa-dark); transform: translateY(-1px); color: #fff !important; }
.wa-btn svg { width: 19px; height: 19px; flex: none; }
.wa-btn.sm { padding: 8px 15px; font-size: 13.5px; }

.nav-toggle { display: none; }

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */

.hero {
  position: relative;
  color: #fff;
  background: var(--navy);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.55;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(7, 23, 36, 0.96) 8%, rgba(7, 23, 36, 0.78) 42%, rgba(7, 23, 36, 0.25) 100%);
}
.hero-inner {
  position: relative;
  z-index: 2;
  padding: clamp(90px, 13vw, 170px) 0 clamp(80px, 11vw, 150px);
  max-width: 720px;
}
.hero .eyebrow { color: var(--cyan); }
.hero h1 {
  font-size: clamp(32px, 5vw, 54px);
  font-weight: 800;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}
.hero h1 em { font-style: normal; color: var(--cyan); }
.hero p { font-size: clamp(16px, 1.6vw, 18.5px); color: rgba(255, 255, 255, 0.85); max-width: 620px; }

.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

.hero-stats {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius) var(--radius) 0 0;
  overflow: hidden;
  backdrop-filter: blur(6px);
}
.stat { background: rgba(7, 23, 36, 0.72); padding: 20px 22px; }
.stat b { display: block; font-family: var(--font-display); font-size: clamp(20px, 2.4vw, 28px); color: #fff; }
.stat b em { font-style: normal; color: var(--cyan); }
.stat span { font-size: 13px; color: rgba(255, 255, 255, 0.66); letter-spacing: 0.02em; }

/* Page hero (subpages) */
.page-hero { position: relative; color: #fff; background: var(--navy); overflow: hidden; }
.page-hero .hero-bg { opacity: 0.4; }
.page-hero::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(7, 23, 36, 0.95) 20%, rgba(7, 23, 36, 0.45) 100%);
}
.page-hero .hero-inner { padding: clamp(64px, 9vw, 110px) 0; max-width: 860px; }
.page-hero h1 { font-size: clamp(28px, 4vw, 44px); margin-bottom: 14px; }
.page-hero p { color: rgba(255, 255, 255, 0.85); max-width: 680px; }
.crumbs { font-size: 13px; color: rgba(255, 255, 255, 0.55); margin-bottom: 18px; }
.crumbs a { color: rgba(255, 255, 255, 0.75); }
.crumbs a:hover { color: var(--cyan); }

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 15px;
  padding: 13px 26px;
  border-radius: 999px;
  border: 0;
  cursor: pointer;
  transition: transform 0.2s, background 0.2s, box-shadow 0.2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--cyan); color: var(--navy); box-shadow: 0 8px 22px rgba(20, 184, 206, 0.35); }
.btn-primary:hover { background: #2fcbde; color: var(--navy); }
.btn-ghost { background: transparent; color: #fff; border: 1.5px solid rgba(255, 255, 255, 0.55); }
.btn-ghost:hover { border-color: #fff; color: #fff; background: rgba(255, 255, 255, 0.08); }
.btn-dark { background: var(--navy); color: #fff; }
.btn-dark:hover { background: var(--navy-3); color: #fff; }
.btn-outline { background: transparent; color: var(--navy); border: 1.5px solid var(--navy); }
.btn-outline:hover { background: var(--navy); color: #fff; }

/* --------------------------------------------------------------------------
   Cards & grids
   -------------------------------------------------------------------------- */

.grid { display: grid; gap: 26px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
  display: flex;
  flex-direction: column;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.card-img { aspect-ratio: 4 / 3; overflow: hidden; }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.card:hover .card-img img { transform: scale(1.05); }
.card-body { padding: 24px 24px 26px; flex: 1; display: flex; flex-direction: column; }
.card-body h3 { font-size: 20px; margin-bottom: 10px; }
.card-body p { color: var(--muted); font-size: 14.8px; flex: 1; }
.card-tags { display: flex; flex-wrap: wrap; gap: 7px; margin: 16px 0 18px; }
.tag {
  font-size: 12px;
  font-weight: 600;
  color: var(--cyan-dark);
  background: var(--cyan-soft);
  border-radius: 999px;
  padding: 4px 11px;
}
.card-link { font-weight: 700; font-size: 14px; margin-top: 6px; }
.card-link::after { content: " →"; }

/* dark card variant */
.card.dark { background: rgba(255, 255, 255, 0.05); border-color: rgba(255, 255, 255, 0.12); }
.card.dark h3, .card.dark h4 { color: #fff; }
.card.dark p { color: rgba(255, 255, 255, 0.72); }

/* Feature list (icon + text) */
.feature { display: flex; gap: 16px; align-items: flex-start; }
.feature-ico {
  flex: none;
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--cyan-soft);
  display: grid;
  place-items: center;
  font-size: 21px;
}
.feature h4 { font-size: 16.5px; margin-bottom: 6px; }
.feature p { color: var(--muted); font-size: 14.5px; }

/* Split layout */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(30px, 5vw, 64px); align-items: center; }
.split-img { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg); }
.split-img img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4 / 3; }

.check-list { list-style: none; margin-top: 18px; }
.check-list li {
  position: relative;
  padding: 9px 0 9px 32px;
  color: var(--ink);
  font-size: 15.5px;
  border-bottom: 1px dashed var(--line);
}
.check-list li:last-child { border-bottom: 0; }
.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0; top: 8px;
  width: 21px; height: 21px;
  border-radius: 50%;
  background: var(--cyan-soft);
  color: var(--cyan-dark);
  font-size: 12px;
  font-weight: 800;
  display: grid;
  place-items: center;
}

/* --------------------------------------------------------------------------
   Tables
   -------------------------------------------------------------------------- */

.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
table.spec { width: 100%; border-collapse: collapse; min-width: 640px; font-size: 14.5px; }
table.spec th, table.spec td { padding: 13px 18px; text-align: left; border-bottom: 1px solid var(--line); }
table.spec thead th {
  background: var(--navy);
  color: #fff;
  font-family: var(--font-display);
  font-size: 13.5px;
  letter-spacing: 0.03em;
  white-space: nowrap;
}
table.spec tbody th { font-weight: 600; color: var(--ink); white-space: nowrap; }
table.spec tbody tr:last-child td, table.spec tbody tr:last-child th { border-bottom: 0; }
table.spec tbody tr:hover { background: #f7fbfd; }
.note { font-size: 12.5px; color: var(--muted); margin-top: 10px; }

/* --------------------------------------------------------------------------
   CTA band / footer
   -------------------------------------------------------------------------- */

.cta-band {
  background:
    radial-gradient(1000px 400px at 85% -20%, rgba(20, 184, 206, 0.25), transparent 60%),
    linear-gradient(120deg, var(--navy) 0%, var(--navy-3) 100%);
  color: #fff;
  padding: clamp(52px, 7vw, 84px) 0;
}
.cta-band h2 { font-size: clamp(24px, 3.2vw, 36px); margin-bottom: 12px; }
.cta-band p { color: rgba(255, 255, 255, 0.78); max-width: 640px; }
.cta-flex { display: flex; flex-wrap: wrap; gap: 26px; align-items: center; justify-content: space-between; }

.site-footer { background: var(--navy); color: rgba(255, 255, 255, 0.72); font-size: 14.5px; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
  gap: 40px;
  padding: clamp(48px, 6vw, 72px) 0 44px;
}
.site-footer h4 { color: #fff; font-size: 15px; letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 18px; }
.site-footer a { color: rgba(255, 255, 255, 0.72); display: block; padding: 5px 0; }
.site-footer a:hover { color: var(--cyan); }
.footer-brand { display: flex; align-items: center; gap: 11px; color: #fff; margin-bottom: 16px; }
.footer-brand .brand-mark { width: 34px; height: 34px; }
.footer-contact li { list-style: none; padding: 7px 0 7px 28px; position: relative; }
.footer-contact li::before { content: var(--ico, "•"); position: absolute; left: 0; color: var(--cyan); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.09);
  padding: 20px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

/* --------------------------------------------------------------------------
   Contact page
   -------------------------------------------------------------------------- */

.contact-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: clamp(30px, 5vw, 60px); }
.info-tile {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 16px;
}
.info-tile .feature-ico { background: var(--navy); color: var(--cyan); }
.info-tile h4 { font-size: 15px; margin-bottom: 3px; }
.info-tile p { color: var(--muted); font-size: 14.5px; word-break: break-word; }

form.rfq { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(24px, 4vw, 38px); box-shadow: var(--shadow); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 13px; font-weight: 700; letter-spacing: 0.02em; }
.field input, .field select, .field textarea {
  font-family: var(--font-body);
  font-size: 14.5px;
  color: var(--ink);
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
  outline: none;
  transition: border 0.2s, box-shadow 0.2s;
  width: 100%;
}
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px var(--cyan-soft);
  background: #fff;
}
.form-note { font-size: 13px; color: var(--muted); margin-top: 14px; }
.form-status { display: none; margin-top: 14px; padding: 12px 16px; border-radius: 10px; background: #e8f9f0; color: #177245; font-size: 14px; }
.form-status.show { display: block; }

/* --------------------------------------------------------------------------
   Misc / banners
   -------------------------------------------------------------------------- */

.honor-strip { display: flex; flex-wrap: wrap; gap: 12px; }
.honor-chip {
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  font-size: 13.5px;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: 999px;
}

.img-band {
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  min-height: 380px;
  display: flex;
  align-items: flex-end;
}
.img-band img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.img-band .img-band-caption {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: 26px 30px;
  background: linear-gradient(transparent, rgba(7, 23, 36, 0.9));
  color: #fff;
}

.app-row { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.app-tile {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 3 / 4;
  display: block;
  background: var(--navy);
}
.app-tile img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.85; transition: transform 0.5s; }
.app-tile:hover img { transform: scale(1.06); }
.app-tile span {
  position: absolute;
  z-index: 2;
  left: 0; right: 0; bottom: 0;
  padding: 40px 16px 16px;
  color: #fff;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15.5px;
  background: linear-gradient(transparent, rgba(7, 23, 36, 0.92));
}

.kv-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.kv { border-left: 3px solid var(--cyan); padding: 4px 0 4px 18px; }
.kv b { display: block; font-family: var(--font-display); font-size: 22px; }
.kv span { color: var(--muted); font-size: 13.5px; }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */

@media (max-width: 1020px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .app-row { grid-template-columns: repeat(3, 1fr); }
  .kv-list { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .nav {
    position: fixed;
    inset: 70px 0 auto 0;
    background: var(--navy-2);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 5% 22px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transform: translateY(-130%);
    transition: transform 0.3s ease;
    z-index: 99;
  }
  .nav.open { transform: none; }
  .nav > a { padding: 13px 4px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); font-size: 16px; }
  .nav .nav-wa { margin-top: 16px; justify-content: center; }
  .nav-toggle {
    display: grid;
    gap: 5px;
    background: none;
    border: 0;
    cursor: pointer;
    padding: 8px;
  }
  .nav-toggle span { width: 24px; height: 2.5px; background: #fff; border-radius: 2px; transition: 0.25s; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

  .split, .grid-2, .grid-3, .contact-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: 1fr; }
  .app-row { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .cta-flex { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 560px) {
  .brand-text b { font-size: 15px; }
  .grid-4 { grid-template-columns: 1fr; }
  .app-row { grid-template-columns: 1fr; }
  .wa-btn .wa-num { display: none; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
}

/* ==========================================================================
   V2 additions — resources / articles / FAQ / answer-first blocks
   ========================================================================== */

/* 5-column footer (brand + Products + Applications + Resources + Contact) */
.footer-grid { grid-template-columns: 1.5fr 1fr 1fr 1.15fr 1.15fr; gap: 32px; }
@media (max-width: 1020px) { .footer-grid { grid-template-columns: 1fr 1fr 1fr; } }
@media (max-width: 860px)  { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px)  { .footer-grid { grid-template-columns: 1fr; } }

/* Small uppercase kicker inside cards */
.card-kicker {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cyan-dark);
  margin-bottom: 8px;
}

/* --------------------------------------------------------------------------
   Answer-first summary box — the paragraph AI engines tend to quote
   -------------------------------------------------------------------------- */

.answer-box {
  background: linear-gradient(180deg, #f4fbfd 0%, #ffffff 100%);
  border: 1px solid var(--line);
  border-left: 4px solid var(--cyan);
  border-radius: var(--radius);
  padding: 24px 28px;
  margin: 0 0 12px;
}
.answer-box h2, .answer-box h3 { font-size: 17px; margin-bottom: 10px; color: var(--navy); }
.answer-box p { color: var(--ink); font-size: 16px; }
.answer-box p + p { margin-top: 10px; }
.answer-box strong { color: var(--navy); }

/* --------------------------------------------------------------------------
   FAQ accordion
   -------------------------------------------------------------------------- */

.faq { max-width: 880px; margin: 36px auto 0; border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 20px 42px 20px 0;
  position: relative;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  color: var(--navy);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px; height: 26px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--cyan-soft);
  color: var(--cyan-dark);
  font-weight: 800;
  font-size: 16px;
  transition: transform 0.25s;
}
.faq details[open] summary::after { content: "−"; }
.faq details[open] summary { color: var(--cyan-dark); }
.faq-a { padding: 0 42px 22px 0; }
.faq-a p { color: var(--muted); font-size: 15.5px; }
.faq-a p + p { margin-top: 10px; }
.faq-a ul { margin: 10px 0 0 20px; color: var(--muted); font-size: 15.5px; }
.faq-a li { padding: 3px 0; }
.faq-a strong { color: var(--ink); }

/* --------------------------------------------------------------------------
   Article / long-form prose
   -------------------------------------------------------------------------- */

.article-head { padding: clamp(48px, 7vw, 84px) 0 clamp(28px, 4vw, 44px); background: var(--bg-alt); border-bottom: 1px solid var(--line); }
.article-head .crumbs { color: var(--muted); }
.article-head .crumbs a { color: var(--cyan-dark); }
.article-head h1 { font-size: clamp(26px, 3.6vw, 42px); margin: 12px 0 16px; max-width: 900px; }
.article-head .article-lead { color: var(--muted); font-size: 18px; max-width: 820px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: 20px; font-size: 13.5px; color: var(--muted); }
.article-meta span { display: inline-flex; align-items: center; gap: 7px; }
.article-meta b { color: var(--ink); font-weight: 600; }

.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: clamp(32px, 5vw, 64px); align-items: start; }

.prose { max-width: 100%; }
.prose > * + * { margin-top: 16px; }
.prose h2 {
  font-size: clamp(22px, 2.5vw, 29px);
  margin-top: 46px;
  padding-top: 8px;
  scroll-margin-top: 90px;
}
.prose h3 { font-size: 19.5px; margin-top: 32px; scroll-margin-top: 90px; }
.prose p, .prose li { color: #32475a; font-size: 16.5px; line-height: 1.78; }
.prose ul, .prose ol { margin: 14px 0 0 22px; }
.prose li { padding: 4px 0; }
.prose strong { color: var(--navy); }
.prose a { font-weight: 600; text-decoration: underline; text-decoration-color: var(--cyan-soft); text-underline-offset: 3px; }
.prose a:hover { text-decoration-color: var(--cyan); }
.prose blockquote {
  border-left: 3px solid var(--cyan);
  background: var(--bg-alt);
  padding: 18px 22px;
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--ink);
  font-size: 16.5px;
}
.prose blockquote p { color: var(--ink); }
.prose img { border-radius: var(--radius); margin-top: 26px; }

/* In-article table (reuses .spec look but inside prose) */
.prose .table-scroll { margin-top: 26px; }
.prose table.spec { min-width: 560px; }

/* Sidebar */
.side-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  position: sticky;
  top: 92px;
}
.side-card + .side-card { margin-top: 20px; }
.side-card h3 { font-size: 15px; letter-spacing: 0.04em; text-transform: uppercase; margin-bottom: 14px; }
.side-card h3 span { color: var(--cyan-dark); }
.side-card.toc ol { margin: 0; padding-left: 18px; }
.side-card.toc li { font-size: 14.5px; padding: 5px 0; color: var(--muted); }
.side-card.toc a { color: var(--muted); font-weight: 500; }
.side-card.toc a:hover { color: var(--cyan-dark); }
.side-card.cta { background: var(--navy); border-color: var(--navy); }
.side-card.cta h3 { color: #fff; }
.side-card.cta p { color: rgba(255, 255, 255, 0.75); font-size: 14.5px; margin-bottom: 16px; }
.side-card.cta .wa-btn { width: 100%; justify-content: center; font-size: 14px; padding: 11px 14px; }
.side-card.cta .wa-num { display: inline; }
.side-facts { list-style: none; }
.side-facts li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 14px;
  color: var(--muted);
}
.side-facts li:last-child { border-bottom: 0; }
.side-facts b { color: var(--ink); font-weight: 600; text-align: right; }

/* Article card meta row */
.card-meta { font-size: 12.5px; color: var(--muted); margin-top: 14px; display: flex; gap: 14px; flex-wrap: wrap; }

/* Related-articles strip at the end of an article */
.related { background: var(--bg-alt); }

@media (max-width: 1020px) {
  .article-layout { grid-template-columns: 1fr; }
  .side-card { position: static; }
}


/* ---- photo gallery ---- */
.gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.gallery figure { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin: 0; transition: transform 0.4s, box-shadow 0.4s; }
.gallery figure:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.gallery img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; display: block; }
.gallery figcaption { padding: 13px 16px 15px; font-size: 13.8px; font-weight: 600; line-height: 1.45; }
@media (max-width: 900px) { .gallery { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 640px) { .gallery { grid-template-columns: repeat(2, 1fr); gap: 14px; } .gallery figcaption { font-size: 12.6px; padding: 10px 12px 12px; } }