/* ==========================================================================
   页面级组件：产品详情 / 应用 / 技术 / 品质 / 定制 / 联系
   ========================================================================== */

/* ---------- quick facts strip ---------- */
.quickfacts {
  border-bottom: 1px solid var(--line);
  background: #fff;
}
.quickfacts__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.quickfact {
  padding: 26px 24px 26px 0;
  border-right: 1px solid var(--line);
}
.quickfact:last-child { border-right: 0; }
.quickfact__label {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 11.5px;
  letter-spacing: .1em;
}
.quickfact__value { color: var(--ink); font-size: 16px; font-weight: 600; line-height: 1.5; }
.quickfact__value small { display: block; margin-top: 2px; color: var(--body); font-size: 12.5px; font-weight: 400; }

/* ---------- product detail layout ---------- */
.detail {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 72px;
  align-items: start;
}
.detail__main { min-width: 0; }
.detail__aside { position: sticky; top: 96px; display: grid; gap: 18px; }
.aside-card {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--band);
}
.aside-card h2, .aside-card h3 { font-size: 16px; font-weight: 600; }
.aside-card p { margin-top: 10px; color: var(--body); font-size: 13px; line-height: 1.85; }
.aside-card .btn { width: 100%; justify-content: center; margin-top: 18px; padding: 11px 18px; font-size: 13px; }
.aside-list { margin: 12px 0 0; padding: 0; list-style: none; }
.aside-list li { margin: 0; border-top: 1px solid var(--line); }
.aside-list a { display: block; padding: 11px 0; color: var(--ink-2); font-size: 13.5px; }
.aside-list a:hover, .aside-list a.is-current { color: var(--brand); }

.block { margin-bottom: 68px; }
.block:last-child { margin-bottom: 0; }
.block > h2 {
  margin-bottom: 8px;
  font-size: clamp(21px, 1.75vw, 25px);
  font-weight: 700;
}
.block > .block__sub { margin-bottom: 20px; color: var(--muted); font-size: 13px; }
.block h3 { margin: 32px 0 10px; font-size: 17px; font-weight: 600; }
.block p { font-size: 14.5px; line-height: 1.95; }
.block ul { font-size: 14.5px; }
.block ul li::marker { color: var(--brand); }

.figure { margin: 30px 0 0; }
.figure img { width: 100%; border-radius: var(--radius); }
.figure figcaption { margin-top: 10px; color: var(--muted); font-size: 12px; }

.note-box {
  margin: 26px 0 0;
  padding: 18px 22px;
  border-left: 2px solid var(--brand);
  background: var(--brand-soft);
  color: var(--ink-2);
  font-size: 13.5px;
  line-height: 1.9;
}
.note-box strong { color: var(--brand); }

/* ---------- gallery strip ---------- */
.strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 26px;
}
.strip img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--band);
}

/* ---------- application page blocks ---------- */
.app-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.app-list { display: grid; gap: 0; margin: 24px 0 0; padding: 0; list-style: none; }
.app-list li {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 10px;
  margin: 0;
  padding: 13px 0;
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--ink-2);
}
.app-list li:last-child { border-bottom: 1px solid var(--line); }
.app-list li::before {
  content: attr(data-i);
  color: var(--brand);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .06em;
  line-height: 1.9;
}

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.contact-card {
  padding: 30px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}
.contact-card__label {
  display: block;
  margin-bottom: 12px;
  color: var(--brand);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .14em;
}
.contact-card__value { color: var(--ink); font-size: 19px; font-weight: 600; line-height: 1.6; }
.contact-card__value--sm { font-size: 15px; font-weight: 500; word-break: break-all; }
.contact-card p { margin-top: 10px; color: var(--body); font-size: 13px; line-height: 1.85; }

/* ---------- form ---------- */
.form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 20px;
  margin-top: 28px;
}
.field { display: grid; gap: 7px; }
.field--full { grid-column: 1 / -1; }
.field label { color: var(--ink-2); font-size: 13px; font-weight: 500; }
.field label .req { color: #c0392b; }
.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--line-2);
  border-radius: 2px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  line-height: 1.7;
  transition: border-color .2s, box-shadow .2s;
}
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus,
.field textarea:focus,
.field select:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(13, 75, 140, .1);
  outline: 0;
}
.field__hint { color: var(--muted); font-size: 11.5px; }
.form__foot {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 4px;
}
.form__msg { color: var(--brand); font-size: 13px; }
.form__msg.is-error { color: #b3261e; }

/* ---------- misc ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 11px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  color: var(--ink-2);
  font-size: 11.5px;
  letter-spacing: .04em;
}
.badge-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }

.split-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 44px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}
.split-list li {
  margin: 0;
  padding: 13px 0;
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--ink-2);
}
.split-list li strong { display: block; color: var(--ink); font-size: 14.5px; }

.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 40px; }
.value {
  padding: 30px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}
.value__no { color: var(--brand); font-size: 11.5px; font-weight: 600; letter-spacing: .16em; }
.value h3 { margin: 12px 0 8px; font-size: 17px; }
.value p { color: var(--body); font-size: 13.5px; line-height: 1.9; }

/* ---------- responsive ---------- */
@media (max-width: 1180px) {
  .nav { display: none; }
  .nav-toggle { display: block; }
  .header-cta .header-tel { display: none; }
  .hero__grid { gap: 44px; }
  .grid--5 { grid-template-columns: repeat(3, 1fr); }
  .detail { grid-template-columns: minmax(0, 1fr) 270px; gap: 44px; }
}

@media (max-width: 1024px) {
  .wrap { width: calc(100% - 56px); }
  .section { padding: 84px 0; }
  .section--tight { padding: 64px 0; }
  .hero { min-height: 560px; height: auto; padding: 132px 0 84px; }
  .hero__grid { grid-template-columns: 1fr; gap: 40px; }
  .hero__stats { grid-template-columns: repeat(3, 1fr); gap: 0 24px; }
  .hero__stat { padding: 16px 0; }
  .hero__stat:last-child { border-bottom: 0; }
  .hero__stat:nth-child(3) { border-bottom: 1px solid rgba(255, 255, 255, .16); }
  .hero__num { font-size: 28px; }
  .hero__label { font-size: 12px; }
  .page-hero { height: auto; min-height: 380px; padding: 128px 0 48px; }
  .page-hero__top { position: static; margin-bottom: 40px; }
  .page-hero__top .subnav { display: none; }
  .split, .app-intro { grid-template-columns: 1fr; gap: 40px; }
  .split--reverse .split__media { order: -1; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 48px; }
  .steps { grid-template-columns: repeat(3, 1fr); gap: 30px 0; }
  .step { padding-right: 24px; }
  .quickfacts__grid { grid-template-columns: repeat(2, 1fr); }
  .quickfact { padding: 22px 20px 22px 0; }
  .quickfact:nth-child(2n) { border-right: 0; }
  .quickfact:nth-child(-n + 2) { border-bottom: 1px solid var(--line); }
  .detail { grid-template-columns: 1fr; }
  .detail__aside { position: static; grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .value-grid { grid-template-columns: 1fr 1fr; }
  .footer__top { grid-template-columns: 1fr 1fr 1fr; gap: 34px; }
  .footer__brandcol { grid-column: 1 / -1; }
  .strip { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  body { font-size: 14.5px; }
  .wrap { width: calc(100% - 40px); }
  .site-header { height: 64px; }
  .site-header.is-solid { height: 60px; }
  .site-header .wrap { width: calc(100% - 32px); }
  .brand__mark { width: 34px; height: 34px; }
  .brand__name { font-size: 15px; }
  .brand__sub { font-size: 9.5px; }
  .header-cta .btn { display: none; }
  .section { padding: 64px 0; }
  .section--tight { padding: 52px 0; }
  .h2 { font-size: 24px; }
  .lead { font-size: 14.5px; margin-top: 14px; }
  .hero { padding: 108px 0 72px; }
  .hero::after {
    background:
      linear-gradient(180deg, rgba(7, 11, 17, .82) 0%, rgba(7, 11, 17, .62) 38%, rgba(7, 11, 17, .9) 100%),
      linear-gradient(96deg, rgba(7, 11, 17, .88) 0%, rgba(7, 11, 17, .5) 100%);
  }
  .hero__actions { gap: 10px; }
  .hero__actions .btn { flex: 1 1 46%; justify-content: center; padding: 12px 14px; font-size: 13px; }
  .hero h1 { font-size: 27px; line-height: 1.42; }
  .hero__desc { font-size: 14px; margin: 18px 0 26px; }
  .hero__stats { grid-template-columns: 1fr; }
  .hero__stat { padding: 14px 0; }
  .hero__stat:nth-child(3) { border-bottom: 0; }
  .hero__stat:last-child { border-bottom: 1px solid rgba(255, 255, 255, .16); }
  .hero__num { font-size: 26px; }
  .hero__foot { position: static; margin-top: 36px; padding: 0; }
  .hero__scroll { display: none; }
  .hero__mark { font-size: 64px; bottom: 8%; }
  .page-hero { padding: 104px 0 40px; min-height: 320px; }
  .page-hero h1 { font-size: 26px; }
  .page-hero__sub { font-size: 13.5px; }
  .grid--5, .grid--4, .grid--3, .grid--2 { grid-template-columns: 1fr; gap: 18px; }
  .grid--5 { grid-template-columns: 1fr 1fr; gap: 14px; }
  .grid--5 .card__body { padding: 16px 15px 18px; }
  .grid--5 .card__title { font-size: 15px; }
  .grid--5 .card__desc { display: none; }
  .stats { grid-template-columns: 1fr 1fr; }
  .stat { padding: 20px 18px; }
  .stat__num { font-size: 26px; }
  .steps { grid-template-columns: 1fr; gap: 0; }
  .step { padding: 18px 0 18px 18px; border-top: 0; border-left: 1px solid var(--line-2); }
  .step::before { top: 24px; left: -4.5px; }
  .step__no { margin: 0 0 4px; }
  .section--dark .step { border-left-color: rgba(255, 255, 255, .18); border-top: 0; }
  .quickfacts__grid { grid-template-columns: 1fr 1fr; }
  .quickfact__value { font-size: 14px; }
  .detail__aside { grid-template-columns: 1fr; }
  .form { grid-template-columns: 1fr; }
  .split-list { grid-template-columns: 1fr; gap: 0; }
  .value-grid { grid-template-columns: 1fr; }
  .tile { aspect-ratio: 3 / 2; }
  .tile__desc { max-height: 64px; opacity: 1; }
  .footer__top { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer__bottom { flex-direction: column; align-items: flex-start; gap: 10px; }
  .dock { right: 14px; bottom: 16px; }
  .dock__btn { width: 40px; height: 40px; }
  table.spec { font-size: 12.5px; min-width: 560px; }
  table.spec th, table.spec td { padding: 10px 12px; }
  .table-wrap {
    box-shadow: inset -18px 0 16px -16px rgba(11, 15, 20, .45);
    background-image: linear-gradient(to left, rgba(13, 75, 140, .04), transparent 40px);
  }
  .strip { grid-template-columns: 1fr 1fr; }
}