/* MaxBox.AI — Global site styles */
:root {
  --ink: #0a1b2e;
  --ink-2: #13294a;
  --paper: #fafaf7;
  --card: #ffffff;
  --gold: #c5a265;
  --gold-d: #a8874a;
  --muted: #5c6672;
  --line: #e7e4dc;
  --radius: 18px;
  --shadow: 0 18px 50px rgba(10, 27, 46, .10);
  --maxw: 1200px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Inter", -apple-system, "Segoe UI", "Helvetica Neue", Arial,
    "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 250, 247, .85);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-in {
  max-width: var(--maxw); margin: 0 auto; padding: 16px 28px;
  display: flex; align-items: center; gap: 32px;
}
.logo { font-size: 21px; font-weight: 800; letter-spacing: .5px; }
.logo em { font-style: normal; color: var(--gold-d); }
.logo small { display: block; font-size: 9.5px; font-weight: 600; letter-spacing: 2.5px; color: var(--muted); text-transform: uppercase; }
.nav-links { display: flex; gap: 26px; margin-left: auto; font-size: 14.5px; font-weight: 500; }
.nav-links a { color: var(--ink-2); opacity: .85; transition: opacity .2s; }
.nav-links a:hover { opacity: 1; }
.lang-btn {
  border: 1px solid var(--ink); background: transparent; color: var(--ink);
  font: inherit; font-size: 13px; font-weight: 700; letter-spacing: 1px;
  padding: 7px 16px; border-radius: 999px; cursor: pointer; transition: all .2s;
}
.lang-btn:hover { background: var(--ink); color: #fff; }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; background: linear-gradient(180deg, #f3f1ea 0%, var(--paper) 100%); }
.hero-in {
  max-width: var(--maxw); margin: 0 auto; padding: 84px 28px 72px;
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center;
}
.eyebrow {
  font-size: 12px; font-weight: 700; letter-spacing: 3.5px; text-transform: uppercase;
  color: var(--gold-d); margin-bottom: 22px;
}
.hero h1 {
  font-size: clamp(38px, 4.6vw, 58px); line-height: 1.12; font-weight: 800;
  letter-spacing: -1px; margin-bottom: 24px;
}
.hero h1 em { font-style: normal; color: var(--gold-d); }
.hero p.lead { font-size: 18px; color: var(--muted); max-width: 520px; margin-bottom: 34px; }
.btn-row { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 14px 30px; border-radius: 999px;
  font-size: 15px; font-weight: 600; transition: transform .15s, box-shadow .2s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--ink); color: #fff; box-shadow: 0 10px 26px rgba(10,27,46,.25); }
.btn-primary:hover { box-shadow: 0 14px 32px rgba(10,27,46,.32); }
.btn-ghost { border: 1.5px solid var(--ink); color: var(--ink); }
.btn-ghost:hover { background: rgba(10,27,46,.06); }
.hero-img { position: relative; }
.hero-img img { border-radius: 24px; box-shadow: var(--shadow); }
.hero-badge {
  position: absolute; left: -18px; bottom: 26px;
  background: #fff; border: 1px solid var(--line); border-radius: 14px;
  padding: 12px 18px; font-size: 12.5px; font-weight: 600; color: var(--ink-2);
  box-shadow: var(--shadow); letter-spacing: .3px;
}
.hero-badge b { color: var(--gold-d); }

/* ---------- Stats strip ---------- */
.stats { border-block: 1px solid var(--line); background: #fff; }
.stats-in {
  max-width: var(--maxw); margin: 0 auto; padding: 30px 28px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center;
}
.stat b { display: block; font-size: 26px; font-weight: 800; letter-spacing: -.5px; }
.stat span { font-size: 12.5px; letter-spacing: 1.6px; text-transform: uppercase; color: var(--muted); }

/* ---------- Sections ---------- */
section.block { padding: 96px 0; }
.sec-head { max-width: 640px; margin-bottom: 48px; }
.sec-head h2 { font-size: clamp(28px, 3.2vw, 40px); font-weight: 800; letter-spacing: -.5px; margin: 10px 0 14px; }
.sec-head p { color: var(--muted); font-size: 16.5px; }

/* ---------- Product filters & grid ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 36px; }
.chip {
  border: 1px solid var(--line); background: #fff; color: var(--ink-2);
  font: inherit; font-size: 13.5px; font-weight: 600; padding: 9px 20px;
  border-radius: 999px; cursor: pointer; transition: all .2s;
}
.chip.on, .chip:hover { background: var(--ink); border-color: var(--ink); color: #fff; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.pcard {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column; transition: transform .2s, box-shadow .25s;
}
.pcard:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.pcard .ph { position: relative; background: #f1efe8; aspect-ratio: 4/3; overflow: hidden; }
.pcard .ph img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.pcard:hover .ph img { transform: scale(1.04); }
.pcard .tag {
  position: absolute; top: 14px; left: 14px; background: rgba(10,27,46,.82); color: #fff;
  font-size: 11px; font-weight: 600; letter-spacing: 1.2px; text-transform: uppercase;
  padding: 5px 12px; border-radius: 999px; backdrop-filter: blur(4px);
}
.pcard .bd { padding: 22px 24px 24px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.pcard h3 { font-size: 18.5px; font-weight: 700; letter-spacing: -.2px; }
.pcard .model { font-size: 12px; color: var(--muted); letter-spacing: .6px; }
.pcard .brief { font-size: 14px; color: var(--muted); flex: 1; }
.prow { display: flex; align-items: center; justify-content: space-between; margin-top: 10px; }
.price { font-size: 17px; font-weight: 800; color: var(--ink); }
.price small { display: block; font-size: 11px; font-weight: 500; color: var(--muted); letter-spacing: .4px; }
.spec-btn {
  border: 1px solid var(--ink); background: transparent; color: var(--ink);
  font: inherit; font-size: 13px; font-weight: 600; padding: 9px 18px;
  border-radius: 999px; cursor: pointer; transition: all .2s;
}
.spec-btn:hover { background: var(--ink); color: #fff; }
.grid-note { margin-top: 26px; font-size: 13px; color: var(--muted); }

/* ---------- Technology ---------- */
#technology { background: var(--ink); color: #f4f2ec; }
#technology .sec-head h2 { color: #fff; }
#technology .sec-head p { color: #b9c2cf; }
#technology .eyebrow { color: var(--gold); }
.tech-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.tcard { background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.12); border-radius: var(--radius); padding: 30px 26px; }
.tcard .big { font-size: 40px; font-weight: 800; color: var(--gold); letter-spacing: -1px; margin-bottom: 12px; }
.tcard h4 { font-size: 16.5px; font-weight: 700; margin-bottom: 8px; color: #fff; }
.tcard p { font-size: 13.8px; color: #b9c2cf; }

/* ---------- Science enrichment (inside #technology) ---------- */
.sci { margin-top: 58px; border-top: 1px solid rgba(255,255,255,.12); padding-top: 52px; }
.sci .sh { font-size: 22px; font-weight: 800; letter-spacing: -.2px; color: #fff; margin: 42px 0 16px; }
.sci .sh:first-child { margin-top: 0; }
.sci .sl { font-size: 15.5px; line-height: 1.75; color: #b9c2cf; max-width: 760px; }
.sci-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 22px; }
.sci-stats > div { border-left: 2px solid var(--gold); padding-left: 18px; }
.sci-stats b { display: block; font-size: 34px; font-weight: 800; color: var(--gold); letter-spacing: -1px; }
.sci-stats span { display: block; margin-top: 8px; font-size: 13.5px; line-height: 1.6; color: #a9b4c2; }
.why-grid { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.why-grid span {
  font-size: 13.5px; padding: 9px 18px; border-radius: 100px;
  border: 1px solid rgba(255,255,255,.18); color: #dfe6ef; background: rgba(255,255,255,.03);
}
.sci-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.sci-quote {
  margin: 22px 0 0; padding: 18px 22px; border-left: 3px solid var(--gold);
  background: rgba(197,162,101,.08); color: #e8e2d4; font-size: 14.5px; line-height: 1.7; font-style: italic;
}
.hyp-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; margin-top: 22px; }
.hyp { border-top: 2px solid rgba(197,162,101,.5); padding-top: 16px; }
.hyp h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.hyp p { font-size: 13px; line-height: 1.7; color: #a9b4c2; }
.isr-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 26px; }
.isr-grid > div { background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.12); border-radius: 18px; padding: 26px 24px; text-align: center; }
.isr-grid b { display: block; font-size: 40px; font-weight: 800; color: var(--gold); letter-spacing: -1px; }
.isr-grid span { display: block; margin-top: 8px; font-size: 13px; letter-spacing: .3px; color: #b9c2cf; }
.who-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 20px; }
.who-grid span {
  font-size: 14px; padding: 14px 18px; border-radius: 12px;
  border: 1px solid rgba(255,255,255,.14); background: rgba(255,255,255,.04); color: #e4e9f0;
}
.who-grid span::before { content: '＋'; color: var(--gold); margin-right: 8px; }
.news-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 20px; }
.news-row p {
  font-size: 13.5px; line-height: 1.75; color: #b9c2cf;
  border-left: 2px solid rgba(255,255,255,.18); padding-left: 16px;
}

/* ---------- Quality ---------- */
#quality { background: var(--paper); border-top: 1px solid var(--line); }
.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 28px; }
.cert {
  background: #fff; border: 1px solid var(--line); border-radius: 18px;
  padding: 24px 22px 26px; box-shadow: 0 10px 30px rgba(10,27,46,.05);
}
.cert-top { display: flex; align-items: baseline; gap: 8px; margin-bottom: 16px; }
.cert-top b { font-size: 26px; font-weight: 800; letter-spacing: -1px; color: var(--ink); }
.cert-top small { font-size: 12px; letter-spacing: 1.8px; color: var(--gold-d); font-weight: 700; }
.cert h4 { font-size: 15.5px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.cert p { font-size: 13px; line-height: 1.7; color: var(--muted); }
.pat-band {
  display: flex; align-items: center; gap: 28px; padding: 28px 32px; margin-bottom: 40px;
  background: var(--ink); border-radius: 18px; color: #f4f2ec;
}
.pat-band .pat-num { font-size: 54px; font-weight: 800; color: var(--gold); letter-spacing: -2px; line-height: 1; }
.pat-band h3 { font-size: 17px; font-weight: 700; margin-bottom: 6px; color: #fff; }
.pat-band p { font-size: 13.5px; line-height: 1.7; color: #b9c2cf; max-width: 760px; }
#quality .tech-grid { grid-template-columns: repeat(4, 1fr); }
#quality .tcard { background: #fff; border: 1px solid var(--line); box-shadow: 0 10px 30px rgba(10,27,46,.05); }
#quality .tcard .big { font-size: 30px; }
#quality .tcard h4 { color: var(--ink); }
#quality .tcard p { color: var(--muted); }
#quality .sh { font-size: 22px; font-weight: 800; color: var(--ink); margin: 34px 0 20px; }
.case-band { margin-top: 36px; padding: 30px 34px; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
.case-band h3 { font-size: 17px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.case-band p { font-size: 14.5px; line-height: 1.8; color: var(--muted); }

/* ---------- Contact ---------- */
#contact { background: #fff; border-top: 1px solid var(--line); }
.contact-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; align-items: stretch; }
.cbox {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 34px; background: var(--paper);
  display: flex; flex-direction: column;
}
.cbox h3 { font-size: 20px; font-weight: 800; margin-bottom: 6px; }
.cbox .sub { color: var(--muted); font-size: 14.5px; margin-bottom: 22px; }
.mailto {
  display: inline-flex; align-items: center; gap: 10px; align-self: flex-start;
  background: var(--ink); color: #fff; font-size: 16px; font-weight: 600;
  padding: 14px 28px; border-radius: 999px; transition: box-shadow .2s;
}
.mailto:hover { box-shadow: 0 12px 30px rgba(10,27,46,.3); }
.cline { margin-top: auto; padding-top: 22px; font-size: 14.5px; color: var(--ink-2); }
.cline b { display: block; font-size: 11.5px; letter-spacing: 1.8px; text-transform: uppercase; color: var(--gold-d); margin-bottom: 3px; }
.qr-wrap { text-align: center; }
.qr-wrap img { width: 190px; border-radius: 14px; border: 1px solid var(--line); margin: auto auto 14px; }
.qr-wrap p { font-size: 13.5px; color: var(--muted); }

/* ---------- Footer ---------- */
footer { background: var(--ink); color: #9aa6b5; font-size: 13px; }
.foot-in {
  max-width: var(--maxw); margin: 0 auto; padding: 44px 28px;
  display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap;
}
.foot-brand { color: #fff; font-size: 19px; font-weight: 800; }
.foot-brand em { font-style: normal; color: var(--gold); }
.foot-co { line-height: 1.9; }
.foot-co b { color: #d9dee6; font-weight: 600; }
.foot-bottom { border-top: 1px solid rgba(255,255,255,.1); }
.foot-bottom .wrap { padding: 18px 28px; display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; font-size: 12px; }

/* ---------- Modal ---------- */
.modal {
  position: fixed; inset: 0; z-index: 90; display: none;
  align-items: center; justify-content: center; padding: 24px;
  background: rgba(8, 18, 32, .58); backdrop-filter: blur(6px);
}
.modal.open { display: flex; }
.modal-card {
  background: #fff; border-radius: 20px; max-width: 860px; width: 100%;
  max-height: 88vh; overflow: auto; box-shadow: 0 30px 80px rgba(0,0,0,.35);
}
.modal-head { display: flex; justify-content: space-between; align-items: start; gap: 20px; padding: 30px 34px 0; }
.modal-head h3 { font-size: 23px; font-weight: 800; letter-spacing: -.3px; }
.modal-head .model { font-size: 12.5px; color: var(--muted); margin-top: 4px; }
.modal-close { border: none; background: #f0eee8; width: 38px; height: 38px; border-radius: 50%; font-size: 18px; cursor: pointer; flex: 0 0 auto; }
.modal-close:hover { background: #e4e1d8; }
.modal-body { padding: 22px 34px 34px; }
.price-row { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 22px; }
.price-pill { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 12px 18px; }
.price-pill small { display: block; font-size: 11px; letter-spacing: 1.2px; text-transform: uppercase; color: var(--gold-d); font-weight: 700; }
.price-pill b { font-size: 18px; }
table.spec { width: 100%; border-collapse: collapse; font-size: 14px; }
table.spec th, table.spec td { text-align: left; padding: 11px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.spec th { width: 36%; color: var(--muted); font-weight: 600; }
.modal-img { width: 100%; border-radius: 14px; margin-bottom: 22px; max-height: 340px; object-fit: cover; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-in { grid-template-columns: 1fr; padding-top: 56px; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .sci-stats { grid-template-columns: repeat(2, 1fr); }
  .hyp-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .sci-pair { grid-template-columns: 1fr; gap: 8px; }
  .who-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .stats-in { grid-template-columns: repeat(2, 1fr); }
  .nav-links { display: none; }
}
@media (max-width: 620px) {
  .grid { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: 1fr; }
  .sci-stats, .isr-grid, .news-row, .sci-pair { grid-template-columns: 1fr; }
  .hyp-grid, .who-grid, .cert-grid, #quality .tech-grid { grid-template-columns: 1fr; }
  .pat-band { flex-direction: column; align-items: flex-start; gap: 14px; }
}