/* HULKNPE Brand Site — Light theme */
:root {
  --blue: #0b5fa5;
  --blue-dark: #08487f;
  --green: #16a34a;
  --orange: #ff9900;
  --ink: #1a2330;
  --ink-soft: #55606e;
  --line: #e3e8ee;
  --bg: #ffffff;
  --bg-soft: #f4f7fa;
  --radius: 14px;
  --shadow: 0 8px 28px rgba(11, 95, 165, .10);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Segoe UI", "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
}

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

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

.container { width: min(1120px, 92%); margin: 0 auto; }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.25rem; letter-spacing: .04em; color: var(--ink); }
.brand .logo-badge {
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(135deg, var(--blue), var(--green));
  display: grid; place-items: center; color: #fff; font-size: .95rem; font-weight: 800;
}
.brand small { display: block; font-size: .62rem; font-weight: 500; color: var(--ink-soft); letter-spacing: .18em; }
.nav-links { display: flex; gap: 26px; list-style: none; align-items: center; }
.nav-links a { color: var(--ink); font-weight: 600; font-size: .92rem; }
.nav-links a:hover { color: var(--blue); }
.nav-links a.active { color: var(--blue); }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 22px; border-radius: 10px;
  font-weight: 700; font-size: .92rem; cursor: pointer;
  border: 2px solid transparent; transition: .18s;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-dark); color: #fff; }
.btn-amazon { background: var(--orange); color: #232f3e; }
.btn-amazon:hover { background: #e68a00; color: #111; }
.btn-ghost { border-color: var(--blue); color: var(--blue); background: transparent; }
.btn-ghost:hover { background: var(--blue); color: #fff; }
.btn svg { width: 16px; height: 16px; }

/* ===== Hero ===== */
.hero { padding: 72px 0 64px; background:
  radial-gradient(900px 420px at 85% -10%, rgba(22,163,74,.10), transparent 60%),
  radial-gradient(700px 380px at 5% 110%, rgba(11,95,165,.10), transparent 60%),
  var(--bg-soft); }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.kicker {
  display: inline-block; padding: 6px 14px; border-radius: 999px;
  background: #e6f2ec; color: #14713c; font-weight: 700; font-size: .78rem;
  letter-spacing: .08em; text-transform: uppercase; margin-bottom: 18px;
}
.hero h1 { font-size: clamp(1.9rem, 4vw, 2.9rem); line-height: 1.2; letter-spacing: -.01em; }
.hero h1 span { color: var(--blue); }
.hero p.lead { margin: 18px 0 28px; color: var(--ink-soft); font-size: 1.06rem; max-width: 34em; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 34px; margin-top: 38px; flex-wrap: wrap; }
.stat b { display: block; font-size: 1.5rem; color: var(--blue); }
.stat span { font-size: .82rem; color: var(--ink-soft); }
.hero-visual { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 22px; }

/* ===== Sections ===== */
.section { padding: 72px 0; }
.section.alt { background: var(--bg-soft); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 44px; }
.section-head .kicker { margin-bottom: 12px; }
.section-head h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
.section-head p { color: var(--ink-soft); margin-top: 10px; }

/* ===== Product cards ===== */
.product-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow); display: flex; flex-direction: column;
  transition: transform .2s, box-shadow .2s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 14px 36px rgba(11,95,165,.16); }
.card-visual { background: linear-gradient(160deg, #eef5fb, #f6fbf7); padding: 30px; display: grid; place-items: center; }
.card-body { padding: 26px 28px 30px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.card-body h3 { font-size: 1.28rem; }
.card-body .tagline { color: var(--green); font-weight: 700; font-size: .85rem; letter-spacing: .05em; text-transform: uppercase; }
.card-body p { color: var(--ink-soft); font-size: .95rem; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-size: .76rem; font-weight: 600; color: var(--blue-dark);
  background: #e8f1f9; border: 1px solid #d3e4f2; padding: 4px 11px; border-radius: 999px;
}
.card-cta { display: flex; gap: 12px; margin-top: auto; padding-top: 8px; flex-wrap: wrap; }

/* ===== Feature grid ===== */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.feature {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 22px;
}
.feature .icon {
  width: 44px; height: 44px; border-radius: 11px; background: #e8f1f9;
  display: grid; place-items: center; margin-bottom: 14px; color: var(--blue);
}
.feature h3 { font-size: 1.02rem; margin-bottom: 6px; }
.feature p { font-size: .88rem; color: var(--ink-soft); }

/* ===== Specs table ===== */
.spec-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.spec-table th, .spec-table td { text-align: left; padding: 13px 20px; border-bottom: 1px solid var(--line); font-size: .92rem; }
.spec-table th { background: var(--bg-soft); width: 34%; color: var(--blue-dark); }
.spec-table tr:last-child td, .spec-table tr:last-child th { border-bottom: none; }

/* ===== Steps ===== */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: step; }
.step { position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 22px; }
.step::before {
  counter-increment: step; content: counter(step);
  display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%;
  background: var(--blue); color: #fff; font-weight: 800; margin-bottom: 14px;
}
.step h3 { font-size: 1rem; margin-bottom: 6px; }
.step p { font-size: .88rem; color: var(--ink-soft); }

/* ===== Page banner ===== */
.page-banner { background: linear-gradient(120deg, var(--blue-dark), var(--blue)); color: #fff; padding: 58px 0 52px; }
.page-banner h1 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); }
.page-banner p { color: #cfe3f5; margin-top: 8px; max-width: 46em; }
.page-banner .crumb { font-size: .8rem; color: #9fc3e2; letter-spacing: .06em; text-transform: uppercase; font-weight: 700; margin-bottom: 10px; }

/* ===== Contact ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.info-list { list-style: none; display: grid; gap: 16px; margin-top: 22px; }
.info-list li { display: flex; gap: 14px; align-items: flex-start; }
.info-list .icon { flex: 0 0 40px; width: 40px; height: 40px; border-radius: 10px; background: #e8f1f9; display: grid; place-items: center; color: var(--blue); }
.info-list b { display: block; font-size: .85rem; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-soft); }
.info-list span { font-size: .95rem; }
.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 32px; }
.form-card h3 { margin-bottom: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: .82rem; font-weight: 700; margin-bottom: 6px; color: var(--ink-soft); }
.field input, .field select, .field textarea {
  width: 100%; padding: 11px 14px; border: 1px solid var(--line); border-radius: 9px;
  font: inherit; background: var(--bg-soft); color: var(--ink);
}
.field input:focus, .field textarea:focus, .field select:focus { outline: 2px solid var(--blue); background: #fff; }

/* ===== Footer ===== */
.site-footer { background: #10202e; color: #b9c6d3; padding: 56px 0 30px; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding-bottom: 36px; border-bottom: 1px solid #22384b; }
.site-footer .brand { color: #fff; }
.site-footer p { font-size: .88rem; margin-top: 12px; }
.site-footer h4 { color: #fff; font-size: .9rem; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 14px; }
.site-footer ul { list-style: none; display: grid; gap: 9px; }
.site-footer ul a { color: #b9c6d3; font-size: .9rem; }
.site-footer ul a:hover { color: #fff; }
.footer-bottom { padding-top: 22px; font-size: .8rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* ===== Real product imagery ===== */
.card-visual.photo { padding: 0; }
.card-visual img { width: 100%; height: auto; display: block; }
.hero-visual img { width: 100%; height: auto; border-radius: 9px; display: block; }
.hero-visual img.contain { object-fit: contain; }

.shot-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.shot {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow);
}
.shot img { width: 100%; height: auto; display: block; }
.shot figcaption { padding: 14px 18px 18px; font-size: .9rem; color: var(--ink-soft); }
.shot figcaption b { display: block; color: var(--ink); font-size: 1rem; margin-bottom: 3px; }

.banner-img { width: 100%; height: auto; border-radius: var(--radius); box-shadow: var(--shadow); display: block; }
.banner-figure { margin-bottom: 34px; }

.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 16px; }
.gallery img {
  width: 100%; aspect-ratio: 1/1; object-fit: cover;
  border: 1px solid var(--line); border-radius: 10px; background: #fff;
  transition: transform .2s, box-shadow .2s;
}
.gallery img:hover { transform: scale(1.03); box-shadow: 0 8px 20px rgba(11,95,165,.16); }

.two-col-visual { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: center; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .hero-grid, .product-grid, .contact-grid, .two-col-visual { grid-template-columns: 1fr; }
  .feature-grid, .steps, .shot-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .feature-grid, .steps, .form-row, .shot-grid, .gallery { grid-template-columns: 1fr; }
}

/* ===== FAQ accordion ===== */
.faq-item {
  background: #fff;
  border: 1px solid var(--line, #d8e0ea);
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
  box-shadow: 0 1px 2px rgba(15, 34, 51, .04);
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 16px 20px;
  font-weight: 700;
  color: var(--ink, #0f2233);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--blue, #0b5fa5);
  flex: none;
  transition: transform .2s ease;
}
.faq-item[open] summary::after { content: "−"; }
.faq-a { padding: 0 20px 18px; color: var(--ink-soft, #55606e); }
.faq-a p { margin: 0 0 10px; }
.faq-a b { color: var(--ink, #0f2233); }