/* ============================================================
   智美工艺品厂 · 景观雕塑  站点样式
   参考 cdhydsgc.com 的栏目结构与橙红主色，重写为响应式、无障碍实现
   ============================================================ */
:root {
  --brand: #e23d0f;
  --brand-dark: #bd3109;
  --accent: #c08860;
  --ink: #20242a;
  --ink-2: #3d434a;
  --muted: #6d737a;
  --line: #e5e5e2;
  --soft: #f6f6f3;
  --soft-2: #ededeb;
  --dark: #303030;
  --green: #243b2d;
  --white: #fff;
  --container: 1200px;
  --radius: 4px;
  --shadow: 0 12px 36px rgba(20, 24, 20, .10);
  --ease: cubic-bezier(.22, .61, .36, 1);
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font: 15px/1.75 var(--font);
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
h1, h2, h3, h4, p { margin-top: 0; }
ul { list-style: none; margin: 0; padding: 0; }
:focus-visible { outline: 3px solid var(--brand); outline-offset: 3px; }
[hidden] { display: none !important; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 12px; top: -60px; z-index: 200;
  background: var(--brand); color: #fff; padding: 10px 18px; border-radius: var(--radius);
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 12px; }

.container { width: min(var(--container), calc(100% - 48px)); margin-inline: auto; }
.section { padding: 76px 0; }
.section--soft { background: var(--soft); }
.section--gray { background: var(--soft-2); }
.section--tight { padding: 54px 0; }

/* ---------- 标题 ---------- */
.section-head { text-align: center; margin-bottom: 42px; }
.section-head__en {
  display: block; color: var(--brand); font-size: 12px; font-weight: 700;
  letter-spacing: .28em; text-transform: uppercase; margin-bottom: 10px;
}
.section-head__title {
  font-size: clamp(26px, 3.1vw, 36px); font-weight: 700; letter-spacing: .12em;
  margin: 0 0 10px; line-height: 1.35;
}
.section-head__rule {
  width: 46px; height: 3px; background: var(--brand); margin: 0 auto 12px; border: 0;
}
.section-head__desc { color: var(--muted); font-size: 14px; margin: 0; }
.section-head--left { text-align: left; }
.section-head--left .section-head__rule { margin-left: 0; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 44px; padding: 0 26px; border: 1px solid var(--brand);
  background: var(--brand); color: #fff; font-size: 14px; font-weight: 600;
  letter-spacing: .08em; border-radius: var(--radius);
  transition: background .25s var(--ease), color .25s var(--ease), transform .25s var(--ease), border-color .25s var(--ease);
}
.btn:hover { background: var(--brand-dark); border-color: var(--brand-dark); transform: translateY(-2px); }
.btn--ghost { background: transparent; color: var(--brand); }
.btn--ghost:hover { background: var(--brand); color: #fff; }
.btn--light { background: #fff; color: var(--ink); border-color: #fff; }
.btn--light:hover { background: transparent; color: #fff; }
.btn__arrow { transition: transform .25s var(--ease); font-size: 16px; line-height: 1; }
.btn:hover .btn__arrow { transform: translateX(4px); }
.more-link {
  display: inline-flex; align-items: center; gap: 8px; color: var(--brand);
  font-size: 13px; font-weight: 700; letter-spacing: .16em; padding: 8px 0;
  border-bottom: 1px solid currentColor;
}
.more-link:hover { color: var(--brand-dark); }
.more-link span:last-child { transition: transform .25s var(--ease); }
.more-link:hover span:last-child { transform: translateX(5px); }

/* ============================================================
   顶部
   ============================================================ */
.topbar { background: #f4f4f1; border-bottom: 1px solid var(--line); font-size: 13px; color: var(--muted); }
.topbar__inner { display: flex; align-items: center; justify-content: space-between; min-height: 38px; gap: 16px; }
.topbar__slogan { letter-spacing: .06em; }
.topbar__contact { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.topbar__contact a { color: var(--ink-2); }
.topbar__contact a:hover { color: var(--brand); }
.topbar__contact strong { color: var(--brand); font-weight: 700; letter-spacing: .04em; }

.site-header { background: #fff; border-bottom: 1px solid var(--line); position: relative; z-index: 60; }
.site-header__inner { display: flex; align-items: center; gap: 28px; min-height: 92px; }
.logo { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.logo__mark { width: 52px; height: 52px; }
.logo__text { display: flex; flex-direction: column; line-height: 1.15; }
.logo__cn { font-size: 25px; font-weight: 800; letter-spacing: .12em; color: var(--brand); }
.logo__en { font-size: 10px; letter-spacing: .3em; color: var(--ink-2); font-weight: 700; margin-top: 5px; }
.logo__sub { font-size: 11px; letter-spacing: .22em; color: var(--muted); margin-top: 3px; }

.nav { margin-left: auto; }
.nav__list { display: flex; align-items: stretch; }
.nav__item { position: relative; }
.nav__link {
  display: flex; align-items: center; height: 92px; padding: 0 19px;
  font-size: 15px; font-weight: 600; letter-spacing: .04em; white-space: nowrap;
  color: var(--ink-2); position: relative;
  transition: color .22s var(--ease);
}
.nav__link::after {
  content: ""; position: absolute; left: 19px; right: 19px; bottom: 26px; height: 2px;
  background: var(--brand); transform: scaleX(0); transform-origin: center;
  transition: transform .25s var(--ease);
}
.nav__link:hover, .nav__link[aria-current="page"] { color: var(--brand); }
.nav__link:hover::after, .nav__link[aria-current="page"]::after { transform: scaleX(1); }
.nav__item--has-sub > .nav__link { padding-right: 30px; }
.nav__item--has-sub > .nav__link::before {
  content: ""; position: absolute; right: 17px; top: 50%; width: 6px; height: 6px;
  border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor;
  transform: translateY(-70%) rotate(45deg); transition: transform .25s var(--ease);
}
.nav__item--has-sub:hover > .nav__link::before { transform: translateY(-30%) rotate(225deg); }
.nav__sub {
  position: absolute; top: 100%; left: 8px; min-width: 168px; background: #fff;
  border: 1px solid var(--line); border-top: 2px solid var(--brand);
  box-shadow: var(--shadow); padding: 8px 0; opacity: 0; visibility: hidden;
  transform: translateY(8px); transition: opacity .2s var(--ease), transform .2s var(--ease), visibility .2s;
}
.nav__item:hover .nav__sub, .nav__item:focus-within .nav__sub { opacity: 1; visibility: visible; transform: translateY(0); }
.nav__sub a { display: block; padding: 8px 20px; font-size: 14px; color: var(--ink-2); }
.nav__sub a:hover { background: var(--soft); color: var(--brand); padding-left: 25px; }
.nav__sub a { transition: padding .2s var(--ease), color .2s var(--ease), background .2s var(--ease); }

.nav-toggle {
  display: none; margin-left: auto; width: 46px; height: 46px; border: 1px solid var(--line);
  background: #fff; border-radius: var(--radius); align-items: center; justify-content: center;
  flex-direction: column; gap: 5px;
}
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); transition: transform .25s var(--ease), opacity .2s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   Banner 轮播
   ============================================================ */
.hero { position: relative; height: clamp(330px, 38vw, 560px); overflow: hidden; background: var(--green); }
.hero__slides { height: 100%; }
.hero__slide {
  position: absolute; inset: 0; opacity: 0; visibility: hidden;
  transition: opacity .9s var(--ease), visibility .9s;
}
.hero__slide.is-active { opacity: 1; visibility: visible; z-index: 1; }
.hero__img { width: 100%; height: 100%; object-fit: cover; }
.hero__slide:nth-child(1) .hero__img { object-position: 58% center; }
.hero__slide:nth-child(2) .hero__img { object-position: 62% center; }
.hero__slide:nth-child(3) .hero__img { object-position: 62% center; }
.hero__veil {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(23, 37, 28, .90) 0%, rgba(23, 37, 28, .74) 31%, rgba(23, 37, 28, .28) 58%, rgba(23, 37, 28, .04) 100%);
}
.hero__content {
  position: absolute; inset: 0; z-index: 2; display: flex; align-items: center;
  color: #fff; pointer-events: none;
}
.hero__content .container { pointer-events: auto; }
.hero__text { max-width: 560px; }
.hero__kicker {
  display: inline-flex; align-items: center; gap: 10px; font-size: 12px; font-weight: 700;
  letter-spacing: .3em; text-transform: uppercase; color: #ffd9c9; margin-bottom: 16px;
}
.hero__kicker::before { content: ""; width: 30px; height: 2px; background: var(--brand); }
.hero__title {
  font-size: clamp(34px, 5vw, 60px); font-weight: 800; letter-spacing: .06em;
  line-height: 1.25; margin: 0 0 14px; text-shadow: 0 2px 20px rgba(0,0,0,.28);
}
.hero__title em { font-style: normal; color: #ffb99e; }
.hero__desc { font-size: clamp(15px, 1.5vw, 18px); color: rgba(255,255,255,.88); margin: 0 0 28px; letter-spacing: .08em; }
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero__nav {
  position: absolute; bottom: 26px; left: 0; right: 0; z-index: 3;
  display: flex; align-items: center; justify-content: center; gap: 14px;
}
.hero__dot {
  width: 34px; height: 4px; border: 0; padding: 0; background: rgba(255,255,255,.45);
  border-radius: 2px; transition: background .25s var(--ease), width .25s var(--ease);
}
.hero__dot.is-active { background: var(--brand); width: 54px; }
.hero__arrow {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
  width: 44px; height: 60px; border: 0; background: rgba(20,28,22,.4); color: #fff;
  font-size: 24px; line-height: 1; transition: background .2s var(--ease);
}
.hero__arrow:hover { background: var(--brand); }
.hero__arrow--prev { left: 0; }
.hero__arrow--next { right: 0; }

/* ---------- 热门搜索 ---------- */
.hotbar { background: #fff; border-bottom: 1px solid var(--line); }
.hotbar__inner { display: flex; align-items: center; gap: 24px; min-height: 74px; }
.hotbar__label { color: var(--muted); font-size: 13px; white-space: nowrap; }
.hotbar__label b { color: var(--brand); letter-spacing: .12em; margin-right: 6px; }
.hotbar__tags { display: flex; gap: 10px; flex-wrap: wrap; }
.hotbar__tag {
  border: 1px solid var(--line); background: var(--soft); color: var(--ink-2);
  padding: 5px 15px; border-radius: 20px; font-size: 13px;
  transition: all .2s var(--ease);
}
.hotbar__tag:hover { border-color: var(--brand); color: var(--brand); background: #fff; }
.search-form { margin-left: auto; display: flex; height: 42px; min-width: 260px; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.search-form input { flex: 1; min-width: 0; border: 0; padding: 0 14px; background: #fff; }
.search-form input:focus { outline: none; }
.search-form:focus-within { border-color: var(--brand); }
.search-form button {
  width: 52px; border: 0; background: var(--brand); color: #fff; font-size: 17px;
  transition: background .2s var(--ease);
}
.search-form button:hover { background: var(--brand-dark); }

/* ============================================================
   产品
   ============================================================ */
.tabs { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; margin-bottom: 40px; }
.tab {
  min-height: 40px; padding: 0 22px; border: 1px solid var(--line); background: #fff;
  color: var(--ink-2); font-size: 14px; border-radius: var(--radius);
  transition: all .22s var(--ease);
}
.tab:hover { border-color: var(--accent); color: var(--accent); }
.tab.is-active, .tab[aria-selected="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }

.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.product-card {
  display: block; background: #fff; border: 1px solid var(--line);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.product-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: #d9d9d4; }
.product-card__media { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: var(--soft-2); }
.product-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .55s var(--ease); }
.product-card:hover .product-card__media img { transform: scale(1.07); }
.product-card__zoom {
  position: absolute; inset: 0; display: grid; place-items: center;
  background: rgba(24, 34, 27, .42); color: #fff; font-size: 13px; letter-spacing: .18em;
  opacity: 0; transition: opacity .3s var(--ease);
}
.product-card:hover .product-card__zoom, .product-card:focus-visible .product-card__zoom { opacity: 1; }
.product-card__body { padding: 14px 16px 16px; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.product-card__title { font-size: 15px; font-weight: 600; margin: 0; }
.product-card__cat { font-size: 12px; color: var(--muted); }
.product-card__plus { color: var(--brand); font-size: 20px; line-height: 1; }
.section__foot { text-align: center; margin-top: 38px; }

/* ---------- 热线横条 ---------- */
.hotline { background: var(--brand); color: #fff; }
.hotline__inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 88px; flex-wrap: wrap; }
.hotline__text { display: flex; align-items: center; gap: 16px; }
.hotline__icon { width: 44px; height: 44px; border: 1px solid rgba(255,255,255,.6); border-radius: 50%; display: grid; place-items: center; font-size: 20px; }
.hotline__icon svg, .floating__btn svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.info-card__icon svg, .contact-card__icon svg { stroke-linecap: round; stroke-linejoin: round; }
.hotline__label { font-size: 13px; letter-spacing: .16em; opacity: .9; }
.hotline__num { display: block; font-size: clamp(22px, 3vw, 30px); font-weight: 800; letter-spacing: .06em; line-height: 1.25; }
.hotline__note { font-size: 14px; opacity: .9; letter-spacing: .08em; }

/* ---------- 公司介绍横幅 ---------- */
.intro-band { position: relative; color: #fff; overflow: hidden; }
.intro-band__bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.intro-band::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(28,42,32,.94), rgba(28,42,32,.72)); }
.intro-band__inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr 1.15fr; gap: 60px; align-items: center; padding: 62px 0; }
.intro-band__title { font-size: clamp(26px, 3vw, 36px); font-weight: 700; letter-spacing: .1em; margin: 0 0 6px; }
.intro-band__en { font-size: 12px; letter-spacing: .28em; color: #ffb99e; text-transform: uppercase; }
.intro-band__rule { width: 42px; height: 3px; background: var(--brand); margin: 20px 0; }
.intro-band__text { color: rgba(255,255,255,.88); font-size: 15px; line-height: 2; margin: 0; }

/* ---------- 选择我们的理由 ---------- */
.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.feature {
  background: #fff; border: 1px solid var(--line); padding: 32px 24px 28px;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.feature:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.feature__no { font-size: 13px; font-weight: 800; letter-spacing: .2em; color: var(--brand); }
.feature__icon { width: 50px; height: 50px; margin: 14px 0 20px; color: var(--accent); }
.feature__icon svg { width: 100%; height: 100%; stroke: currentColor; fill: none; stroke-width: 1.4; }
.feature__title { font-size: 18px; font-weight: 700; margin: 0 0 10px; }
.feature__text { color: var(--muted); font-size: 13.5px; margin: 0; }

/* ---------- 新闻 ---------- */
.news-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.news-block__head { display: flex; align-items: flex-end; justify-content: space-between; border-bottom: 2px solid var(--ink); padding-bottom: 14px; margin-bottom: 24px; }
.news-block__title { font-size: 22px; font-weight: 700; letter-spacing: .1em; margin: 0; }
.news-block__en { display: block; font-size: 11px; letter-spacing: .2em; color: var(--muted); text-transform: uppercase; margin-top: 3px; }
.news-block__more { font-size: 12px; letter-spacing: .12em; color: var(--muted); }
.news-block__more:hover { color: var(--brand); }
.news-feature { display: grid; grid-template-columns: 46% 1fr; gap: 20px; }
.news-feature__img { aspect-ratio: 4 / 3; overflow: hidden; background: var(--soft-2); }
.news-feature__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.news-feature:hover img { transform: scale(1.06); }
.news-feature__date { color: var(--brand); font-size: 12px; font-weight: 700; letter-spacing: .1em; }
.news-feature__title { font-size: 18px; font-weight: 700; margin: 8px 0; line-height: 1.5; }
.news-feature__title a:hover { color: var(--brand); }
.news-feature__text { color: var(--muted); font-size: 13px; margin: 0; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.news-list li { border-bottom: 1px solid var(--line); }
.news-list a { display: flex; gap: 18px; padding: 16px 0; align-items: flex-start; }
.news-list__date { flex: 0 0 62px; text-align: center; background: var(--soft); padding: 8px 4px; border-top: 2px solid var(--accent); }
.news-list__day { display: block; font-size: 21px; font-weight: 800; line-height: 1.1; color: var(--ink); }
.news-list__month { font-size: 11px; color: var(--muted); }
.news-list__title { font-size: 15px; font-weight: 600; line-height: 1.5; transition: color .2s var(--ease); }
.news-list__text { color: var(--muted); font-size: 12.5px; margin: 4px 0 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-list a:hover .news-list__title { color: var(--brand); }

/* ---------- 成功案例轮播 ---------- */
.cases { position: relative; }
.cases__viewport { overflow: hidden; }
.cases__track { display: flex; gap: 22px; transition: transform .55s var(--ease); }
.case-card { flex: 0 0 calc((100% - 44px) / 3); background: #fff; border: 1px solid var(--line); }
.case-card__media { aspect-ratio: 4 / 3; overflow: hidden; background: var(--soft-2); }
.case-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.case-card:hover img { transform: scale(1.06); }
.case-card__body { padding: 16px 18px 20px; }
.case-card__tag { font-size: 11px; letter-spacing: .16em; color: var(--brand); }
.case-card__title { font-size: 17px; font-weight: 700; margin: 6px 0 4px; }
.case-card__text { font-size: 13px; color: var(--muted); margin: 0; }
.cases__controls { display: flex; justify-content: center; gap: 12px; margin-top: 32px; }
.cases__btn {
  width: 44px; height: 44px; border: 1px solid var(--line); background: #fff; color: var(--ink);
  font-size: 18px; border-radius: var(--radius); transition: all .2s var(--ease);
}
.cases__btn:hover:not(:disabled) { background: var(--brand); color: #fff; border-color: var(--brand); }
.cases__btn:disabled { opacity: .4; cursor: not-allowed; }

/* ---------- 关于我们 + 联系条 ---------- */
.about-strip { display: grid; grid-template-columns: 1.1fr .9fr; gap: 60px; align-items: center; }
.about-strip__text p { color: var(--ink-2); line-height: 2.05; margin-bottom: 18px; }
.about-strip__quote { border-left: 3px solid var(--brand); padding: 6px 0 6px 18px; color: var(--brand); font-weight: 600; letter-spacing: .06em; margin: 22px 0 26px; }
.about-strip__img { aspect-ratio: 4 / 3; overflow: hidden; background: var(--soft-2); }
.about-strip__img img { width: 100%; height: 100%; object-fit: cover; }
.stats { display: flex; gap: 36px; margin: 26px 0; }
.stats__num { font-size: 30px; font-weight: 800; color: var(--brand); line-height: 1.1; }
.stats__label { font-size: 12px; color: var(--muted); letter-spacing: .08em; }

.contact-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.contact-card { background: var(--soft); border: 1px solid var(--line); padding: 28px 26px; }
.contact-card__icon { width: 40px; height: 40px; color: var(--brand); margin-bottom: 14px; }
.contact-card__icon svg { width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 1.5; }
.contact-card__label { font-size: 12px; letter-spacing: .18em; color: var(--muted); }
.contact-card__value { font-size: 17px; font-weight: 700; margin-top: 6px; line-height: 1.6; word-break: break-all; }
.contact-card__value a:hover { color: var(--brand); }
.contact-card__hint { font-size: 12px; color: var(--muted); margin-top: 8px; }

/* ============================================================
   页脚
   ============================================================ */
.site-footer { background: var(--dark); color: rgba(255,255,255,.72); padding: 56px 0 44px; }
.footer-grid { display: grid; grid-template-columns: 1.25fr 2fr; gap: 60px; }
.footer-brand__name { color: #fff; font-size: 22px; font-weight: 800; letter-spacing: .1em; margin-bottom: 16px; }
.footer-brand p { font-size: 13px; line-height: 2; margin: 0 0 6px; }
.footer-brand a:hover { color: var(--brand); }
.footer-cols { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.footer-col__title { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 16px; }
.footer-col li { margin-bottom: 9px; font-size: 13px; }
.footer-col a:hover { color: var(--brand); }
.copyright { background: var(--brand); color: #fff; }
.copyright__inner { display: flex; align-items: center; justify-content: space-between; gap: 14px; min-height: 48px; font-size: 12.5px; flex-wrap: wrap; }
.copyright a { border-bottom: 1px solid rgba(255,255,255,.5); }

/* ---------- 悬浮工具 ---------- */
.floating { position: fixed; right: 18px; bottom: 22px; z-index: 70; display: flex; flex-direction: column; gap: 10px; }
.floating__btn {
  width: 46px; height: 46px; border: 0; border-radius: var(--radius);
  background: var(--dark); color: #fff; font-size: 18px; display: grid; place-items: center;
  box-shadow: 0 6px 20px rgba(0,0,0,.18); transition: background .2s var(--ease), transform .2s var(--ease);
}
.floating__btn:hover { background: var(--brand); transform: translateY(-2px); }
.floating__btn--top { opacity: 0; visibility: hidden; }
.floating__btn--top.is-visible { opacity: 1; visibility: visible; }

/* ============================================================
   灯箱
   ============================================================ */
.lightbox {
  position: fixed; inset: 0; z-index: 120; background: rgba(16, 20, 17, .92);
  display: flex; align-items: center; justify-content: center; padding: 24px;
}
.lightbox__dialog { position: relative; max-width: min(1100px, 92vw); width: 100%; text-align: center; color: #fff; }
.lightbox__img { max-width: 100%; max-height: 76vh; margin: 0 auto; object-fit: contain; }
.lightbox__caption { margin-top: 14px; font-size: 14px; letter-spacing: .1em; color: rgba(255,255,255,.85); }
.lightbox__counter { font-size: 12px; color: rgba(255,255,255,.6); margin-top: 4px; }
.lightbox__close, .lightbox__nav {
  position: absolute; border: 0; background: rgba(255,255,255,.12); color: #fff;
  width: 46px; height: 46px; font-size: 22px; border-radius: 50%;
  transition: background .2s var(--ease);
}
.lightbox__close:hover, .lightbox__nav:hover { background: var(--brand); }
.lightbox__close { top: -58px; right: 0; }
.lightbox__nav--prev { left: -60px; top: 42%; }
.lightbox__nav--next { right: -60px; top: 42%; }
body.is-locked { overflow: hidden; }

/* ============================================================
   内页
   ============================================================ */
.page-hero {
  position: relative; min-height: 240px; display: flex; align-items: center;
  background: var(--green) url("../img/page-hero.webp") center/cover no-repeat; color: #fff;
}
.page-hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(23,37,28,.9), rgba(23,37,28,.5)); }
.page-hero__inner { position: relative; z-index: 1; padding: 44px 0; }
.page-hero__title { font-size: clamp(28px, 3.6vw, 40px); font-weight: 800; letter-spacing: .12em; margin: 0 0 8px; }
.page-hero__en { font-size: 12px; letter-spacing: .28em; color: #ffcbb5; text-transform: uppercase; }
.breadcrumb { font-size: 13px; color: var(--muted); margin-top: 14px; }
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb span { margin: 0 8px; color: #bbb; }

.prose { max-width: 860px; }
.prose p { color: var(--ink-2); font-size: 15.5px; line-height: 2.1; margin-bottom: 20px; }
.prose h3 { font-size: 20px; margin: 34px 0 14px; padding-left: 14px; border-left: 3px solid var(--brand); }
.prose blockquote { margin: 26px 0; padding: 20px 24px; background: var(--soft); border-left: 3px solid var(--accent); color: var(--ink-2); }

.filter-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-bottom: 32px; padding-bottom: 24px; border-bottom: 1px solid var(--line); }
.filter-bar__label { color: var(--muted); font-size: 13px; margin-right: 6px; }
.filter-bar__count { margin-left: auto; color: var(--muted); font-size: 13px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.info-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.info-card { display: flex; gap: 18px; padding: 24px; border: 1px solid var(--line); background: #fff; }
.info-card__icon { flex: 0 0 44px; width: 44px; height: 44px; color: var(--brand); }
.info-card__icon svg { width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 1.5; }
.info-card__label { font-size: 12px; letter-spacing: .16em; color: var(--muted); }
.info-card__value { font-size: 17px; font-weight: 600; margin-top: 4px; line-height: 1.65; word-break: break-all; }
.info-card__value a:hover { color: var(--brand); }
.info-card__note { font-size: 12.5px; color: var(--muted); margin-top: 4px; }

.map-card { background: var(--soft); border: 1px solid var(--line); padding: 30px; height: 100%; display: flex; flex-direction: column; justify-content: center; }
.map-card__title { font-size: 20px; font-weight: 700; margin-bottom: 14px; }
.map-card__list li { padding: 9px 0; border-bottom: 1px dashed var(--line); font-size: 14px; color: var(--ink-2); }
.map-card__list b { color: var(--brand); margin-right: 10px; }

.news-page-list { display: grid; gap: 0; }
.news-page-item { display: grid; grid-template-columns: 190px 1fr auto; gap: 26px; align-items: center; padding: 22px 0; border-bottom: 1px solid var(--line); }
.news-page-item__img { aspect-ratio: 4 / 3; overflow: hidden; background: var(--soft-2); }
.news-page-item__img img { width: 100%; height: 100%; object-fit: cover; }
.news-page-item__tag { font-size: 11px; letter-spacing: .14em; color: var(--brand); }
.news-page-item__title { font-size: 19px; font-weight: 700; margin: 7px 0; }
.news-page-item__title a:hover { color: var(--brand); }
.news-page-item__text { color: var(--muted); font-size: 13.5px; margin: 0; }
.news-page-item__date { color: var(--muted); font-size: 13px; white-space: nowrap; }

.case-group { margin-bottom: 64px; }
.case-group__head { display: flex; align-items: baseline; gap: 18px; border-bottom: 2px solid var(--ink); padding-bottom: 12px; margin-bottom: 24px; }
.case-group__no { color: var(--brand); font-size: 14px; font-weight: 800; letter-spacing: .18em; }
.case-group__title { font-size: 22px; font-weight: 700; margin: 0; }
.case-group__desc { color: var(--muted); font-size: 13.5px; margin-left: auto; }

.form-card { background: #fff; border: 1px solid var(--line); padding: 34px; }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: 13px; font-weight: 600; }
.field label span { color: var(--brand); }
.field input, .field textarea, .field select {
  width: 100%; border: 1px solid var(--line); background: #fff; padding: 11px 13px;
  border-radius: var(--radius); color: var(--ink); min-height: 46px;
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--brand); outline: none; box-shadow: 0 0 0 3px rgba(226,61,15,.12); }
.field__error { color: var(--brand); font-size: 12px; min-height: 16px; }
.form-note { color: var(--muted); font-size: 12.5px; margin: 18px 0 0; }
.form-status { margin-top: 16px; padding: 12px 16px; border-radius: var(--radius); background: #eef6ef; color: #256b35; font-size: 14px; }
.form-status--error { background: #fdf0ec; color: var(--brand-dark); }

.note-box { background: var(--soft); border-left: 3px solid var(--accent); padding: 18px 22px; color: var(--ink-2); font-size: 13.5px; line-height: 1.9; }

/* ---------- 滚动显现 ---------- */
/* 内容始终可见，动画仅用于卡片 hover 等微交互，不隐藏正文 */

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
  .nav__link { padding: 0 12px; font-size: 14px; }
  .nav__link::after { left: 12px; right: 12px; }
  .nav__item--has-sub > .nav__link { padding-right: 24px; }
  .nav__item--has-sub > .nav__link::before { right: 11px; }
  .footer-grid { gap: 34px; }
  .intro-band__inner { gap: 34px; }
}

@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .site-header__inner { min-height: 74px; }
  .nav {
    position: absolute; top: 100%; left: 0; right: 0; margin: 0;
    background: #fff; border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
    max-height: 0; overflow: hidden; transition: max-height .35s var(--ease);
  }
  .nav.is-open { max-height: 80vh; overflow-y: auto; }
  .nav__list { display: block; padding: 8px 0 16px; }
  .nav__link { height: auto; padding: 12px 24px; font-size: 15px; }
  .nav__link::after { display: none; }
  .nav__item--has-sub > .nav__link::before { right: 26px; transform: translateY(-70%) rotate(45deg); }
  .nav__sub { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; border-left: 2px solid var(--brand); margin: 0 24px 6px; padding: 0 0 0 12px; min-width: 0; }
  .nav__sub a { padding: 7px 10px; font-size: 13.5px; }
  .nav__sub a:hover { padding-left: 14px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(3, 1fr); }
  .features { grid-template-columns: repeat(2, 1fr); }
  .news-layout { grid-template-columns: 1fr; gap: 46px; }
  .case-card { flex-basis: calc((100% - 22px) / 2); }
  .intro-band__inner { grid-template-columns: 1fr; padding: 46px 0; }
  .about-strip { grid-template-columns: 1fr; gap: 30px; }
  .footer-grid { grid-template-columns: 1fr; }
  .contact-strip { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 680px) {
  .container { width: min(100% - 32px, var(--container)); }
  .section { padding: 52px 0; }
  body { overflow-x: hidden; }
  .topbar__slogan { display: none; }
  .topbar__inner { justify-content: center; min-height: 34px; }
  .topbar__contact { gap: 12px; font-size: 12px; flex-wrap: wrap; justify-content: center; }
  .site-header__inner { gap: 10px; min-height: 68px; }
  .logo { min-width: 0; gap: 9px; }
  .logo__text { min-width: 0; }
  .logo__mark { width: 42px; height: 42px; flex: 0 0 42px; }
  .logo__cn { font-size: 20px; }
  .logo__en { font-size: 8px; letter-spacing: .18em; }
  .logo__sub { font-size: 10px; }
  .nav-toggle { flex: 0 0 44px; width: 44px; height: 44px; margin-left: auto; }
  .hero { height: 380px; }
  .hero__veil { background: linear-gradient(90deg, rgba(23,37,28,.9), rgba(23,37,28,.6) 60%, rgba(23,37,28,.35)); }
  .hero__arrow { display: none; }
  .hero__text { max-width: 100%; }
  .hero__title { font-size: 32px; }
  .hotbar__inner { flex-direction: column; align-items: stretch; gap: 12px; padding: 16px 0; }
  .hotbar__tags { gap: 8px; }
  .search-form { margin-left: 0; min-width: 0; width: 100%; }
  .product-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .product-card__body { padding: 10px 12px 12px; flex-direction: column; align-items: flex-start; gap: 2px; }
  .product-card__title { font-size: 13.5px; }
  .product-card__plus { display: none; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .tabs { gap: 6px; }
  .tab { padding: 0 13px; font-size: 13px; min-height: 36px; }
  .features { grid-template-columns: 1fr 1fr; gap: 12px; }
  .feature { padding: 22px 16px; }
  .feature__icon { width: 38px; height: 38px; margin: 10px 0 14px; }
  .feature__title { font-size: 16px; }
  .feature__text { font-size: 12.5px; }
  .news-feature { grid-template-columns: 1fr; }
  .case-card { flex-basis: 100%; }
  .contact-strip { grid-template-columns: 1fr; }
  .info-grid { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .copyright__inner { justify-content: center; text-align: center; padding: 10px 0; }
  .hotline__inner { padding: 18px 0; }
  .stats { gap: 20px; }
  .stats__num { font-size: 24px; }
  .form-grid { grid-template-columns: 1fr; }
  .form-card { padding: 22px; }
  .news-page-item { grid-template-columns: 110px 1fr; gap: 14px; }
  .news-page-item__date { grid-column: 2; }
  .news-page-item__text { display: none; }
  .case-group__head { flex-wrap: wrap; gap: 8px; }
  .case-group__desc { margin-left: 0; width: 100%; }
  .lightbox__nav--prev { left: 0; }
  .lightbox__nav--next { right: 0; }
  .lightbox__close { top: -54px; }
  .floating { right: 12px; bottom: 12px; }
}

@media (max-width: 380px) {
  .product-grid, .grid-4 { grid-template-columns: 1fr; }
  .features { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .product-card, .case-card, .feature { transition: none !important; }
}