/* ==========================================================================
   江苏夏日胡杨膜结构工程有限公司 — 官网样式表
   ========================================================================== */

:root {
  --navy-900: #0E1620;
  --navy-800: #152029;
  --navy-700: #1E2C38;
  --navy-600: #2A3D4D;
  --cyan-600: #D9780C;
  --cyan-500: #F7941D;
  --cyan-400: #FFAC4F;
  --cyan-100: #FDF1DE;
  --gold-600: #245A80;
  --gold-500: #2C6E9B;
  --gold-100: #E8F1F8;
  --ink: #131C29;
  --text: #34424F;
  --muted: #6B7B8C;
  --line: #E4EAF1;
  --bg: #FFFFFF;
  --bg-soft: #F5F8FC;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 2px 8px rgba(12, 38, 66, .06);
  --shadow: 0 10px 30px rgba(12, 38, 66, .09);
  --shadow-lg: 0 24px 60px rgba(12, 38, 66, .14);
  --container: 1200px;
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB",
    "Source Han Sans SC", "Noto Sans SC", -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  font-size: 15px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; transition: color .25s ease; }
ul { list-style: none; }
button, input, textarea, select { font-family: inherit; font-size: inherit; }

h1, h2, h3, h4 {
  color: var(--ink);
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: .2px;
}

/* ---------- 通用容器与段落 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 96px 0; }
.section--soft { background: var(--bg-soft); }
.section--tight { padding: 72px 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 3px;
  color: var(--cyan-600);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan-500), var(--gold-500));
  border-radius: 2px;
}

.section-head { max-width: 720px; margin-bottom: 52px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head--center .eyebrow { justify-content: center; }

.section-title {
  font-size: 36px;
  letter-spacing: -.5px;
  margin-bottom: 16px;
}
.section-title em {
  font-style: normal;
  color: var(--cyan-600);
  position: relative;
}
.section-sub {
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.9;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 30px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .28s cubic-bezier(.4, 0, .2, 1);
  white-space: nowrap;
}
.btn--primary {
  background: linear-gradient(135deg, var(--cyan-500), var(--cyan-600));
  color: #fff;
  box-shadow: 0 10px 24px rgba(217, 120, 12, .32);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px rgba(217, 120, 12, .4);
}
.btn--gold {
  background: linear-gradient(135deg, var(--gold-500), var(--gold-600));
  color: #fff;
  box-shadow: 0 10px 24px rgba(44, 110, 155, .3);
}
.btn--gold:hover { transform: translateY(-2px); box-shadow: 0 16px 32px rgba(44, 110, 155, .38); }
.btn--ghost {
  border-color: rgba(255, 255, 255, .45);
  color: #fff;
  backdrop-filter: blur(6px);
  background: rgba(255, 255, 255, .08);
}
.btn--ghost:hover { background: rgba(255, 255, 255, .18); border-color: #fff; transform: translateY(-2px); }
.btn--outline {
  border-color: var(--line);
  color: var(--navy-700);
  background: #fff;
}
.btn--outline:hover { border-color: var(--cyan-500); color: var(--cyan-600); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.btn--sm { padding: 10px 22px; font-size: 14px; }
.btn--block { width: 100%; }

/* ==========================================================================
   顶部导航
   ========================================================================== */
.topbar {
  background: var(--navy-900);
  color: rgba(255, 255, 255, .78);
  font-size: 13px;
  line-height: 1;
  padding: 9px 0;
}
.topbar__inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.topbar__list { display: flex; gap: 22px; align-items: center; }
.topbar__list li { display: flex; align-items: center; gap: 7px; }
.topbar svg { width: 14px; height: 14px; flex: none; }
.topbar__tel strong { color: var(--gold-500); font-weight: 700; letter-spacing: .5px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 900;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .3s ease, border-color .3s ease;
}
.site-header.is-stuck { box-shadow: 0 6px 24px rgba(12, 38, 66, .08); border-bottom-color: var(--line); }

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  height: 84px;
}

/* Logo */
.brand { display: flex; align-items: center; gap: 13px; flex: none; }
.brand__mark { width: 46px; height: 46px; flex: none; }
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__name {
  font-size: 20px;
  font-weight: 800;
  color: var(--navy-800);
  letter-spacing: 2px;
}
.brand__en {
  font-size: 9.5px;
  letter-spacing: 1.4px;
  color: var(--muted);
  text-transform: uppercase;
  font-weight: 600;
}

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  position: relative;
  padding: 10px 16px;
  font-size: 15.5px;
  font-weight: 500;
  color: var(--text);
  border-radius: 8px;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan-500), var(--gold-500));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s ease;
}
.nav a:hover { color: var(--navy-800); }
.nav a:hover::after, .nav a.is-active::after { transform: scaleX(1); }
.nav a.is-active { color: var(--cyan-600); font-weight: 600; }

.header__actions { display: flex; align-items: center; gap: 14px; flex: none; }
.header__phone { display: flex; flex-direction: column; line-height: 1.2; text-align: right; }
.header__phone span { font-size: 11.5px; color: var(--muted); }
.header__phone strong { font-size: 18px; color: var(--navy-800); letter-spacing: .3px; }

.burger {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.burger span {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--navy-700);
  transition: transform .3s ease, opacity .3s ease;
}
.burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   首页 Hero
   ========================================================================== */
.hero {
  position: relative;
  min-height: 720px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--navy-900);
}
.hero__bg { position: absolute; inset: 0; z-index: 0; }
.hero__bg svg { width: 100%; height: 100%; }
.hero__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 62% center;
}
.hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(8, 25, 46, .96) 0%, rgba(8, 25, 46, .82) 38%, rgba(8, 25, 46, .34) 72%, rgba(8, 25, 46, .5) 100%);
}
.hero__inner {
  position: relative;
  z-index: 2;
  padding: 120px 0 130px;
  max-width: 700px;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .2);
  color: #fff;
  font-size: 13.5px;
  margin-bottom: 26px;
  backdrop-filter: blur(8px);
}
.hero__badge b { color: #FFAC4F; }
.hero__badge i {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--cyan-400);
  box-shadow: 0 0 0 4px rgba(63, 196, 214, .22);
  font-style: normal;
}
.hero h1 {
  color: #fff;
  font-size: 54px;
  line-height: 1.22;
  letter-spacing: -.5px;
  margin-bottom: 22px;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(100deg, #FFC98A, var(--cyan-400));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__lead {
  color: rgba(255, 255, 255, .8);
  font-size: 17px;
  line-height: 1.95;
  margin-bottom: 38px;
  max-width: 600px;
}
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 46px; }

.hero__points { display: flex; flex-wrap: wrap; gap: 12px 30px; }
.hero__points li {
  display: flex;
  align-items: center;
  gap: 9px;
  color: rgba(255, 255, 255, .88);
  font-size: 14.5px;
}
.hero__points svg { width: 19px; height: 19px; flex: none; }

.hero__scroll {
  position: absolute;
  left: 50%;
  bottom: 34px;
  transform: translateX(-50%);
  z-index: 3;
  color: rgba(255, 255, 255, .5);
  font-size: 12px;
  letter-spacing: 2px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.hero__scroll i {
  width: 1px; height: 34px;
  background: linear-gradient(180deg, rgba(255, 255, 255, .6), transparent);
  animation: scrollHint 2s ease-in-out infinite;
}
@keyframes scrollHint {
  0%, 100% { opacity: .3; transform: scaleY(.6); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ==========================================================================
   数据条
   ========================================================================== */
.stats {
  position: relative;
  z-index: 5;
  margin-top: -66px;
}
.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.stat {
  padding: 34px 26px;
  text-align: center;
  position: relative;
}
.stat + .stat::before {
  content: "";
  position: absolute;
  left: 0; top: 26%;
  height: 48%;
  width: 1px;
  background: var(--line);
}
.stat__num {
  font-size: 40px;
  font-weight: 800;
  color: var(--navy-800);
  line-height: 1;
  letter-spacing: -1px;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 3px;
}
.stat__num b { font-size: 20px; font-weight: 700; color: var(--cyan-500); }
.stat__label { font-size: 14px; color: var(--muted); margin-top: 10px; }

/* ==========================================================================
   关于我们（图文分栏）
   ========================================================================== */
.about-split {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 64px;
  align-items: center;
}
.about-split__visual { position: relative; }
.about-split__visual img,
.about-split__visual svg { border-radius: var(--radius-lg); width: 100%; height: auto; }
.about-split__deco {
  position: absolute;
  right: -22px;
  bottom: -22px;
  width: 150px;
  height: 150px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--cyan-500), var(--navy-700));
  z-index: -1;
}
.about-split__badge {
  position: absolute;
  left: -18px;
  bottom: 30px;
  background: #fff;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  padding: 18px 24px;
  display: flex;
  gap: 14px;
  align-items: center;
}
.about-split__badge svg { width: 40px; height: 40px; }
.about-split__badge strong { display: block; font-size: 22px; color: var(--navy-800); line-height: 1.2; }
.about-split__badge span { font-size: 13px; color: var(--muted); }

.about-list { margin: 26px 0 32px; display: grid; gap: 14px; }
.about-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 15px;
  color: var(--text);
}
.about-list svg { width: 20px; height: 20px; flex: none; margin-top: 4px; }

/* ==========================================================================
   产品网格
   ========================================================================== */
.grid-products {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.pcard {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform .35s cubic-bezier(.4, 0, .2, 1), box-shadow .35s ease, border-color .35s ease;
  display: flex;
  flex-direction: column;
}
.pcard:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: transparent; }
.pcard__media { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--bg-soft); }
.pcard__media svg,
.pcard__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s cubic-bezier(.4, 0, .2, 1);
}
.pcard:hover .pcard__media svg,
.pcard:hover .pcard__media img { transform: scale(1.06); }
.pcard__tag {
  position: absolute;
  left: 16px;
  top: 16px;
  padding: 5px 13px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(6px);
  font-size: 12px;
  font-weight: 600;
  color: var(--cyan-600);
  letter-spacing: .5px;
}
.pcard__body { padding: 24px 26px 28px; flex: 1; display: flex; flex-direction: column; }
.pcard__title { font-size: 19px; margin-bottom: 10px; }
.pcard__desc { font-size: 14px; color: var(--muted); line-height: 1.85; flex: 1; }
.pcard__meta {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chip {
  font-size: 12.5px;
  color: var(--navy-700);
  background: var(--cyan-100);
  border-radius: 6px;
  padding: 4px 10px;
}
.pcard__more {
  margin-top: 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--cyan-600);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.pcard__more svg { width: 15px; height: 15px; transition: transform .3s ease; }
.pcard:hover .pcard__more svg { transform: translateX(4px); }

/* 产品筛选 */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 44px;
}
.filter-btn {
  padding: 9px 22px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  font-size: 14px;
  cursor: pointer;
  transition: all .25s ease;
}
.filter-btn:hover { border-color: var(--cyan-400); color: var(--cyan-600); }
.filter-btn.is-active {
  background: linear-gradient(135deg, var(--cyan-500), var(--cyan-600));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 8px 20px rgba(14, 140, 158, .26);
}

/* ==========================================================================
   核心优势
   ========================================================================== */
.grid-adv { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.adv {
  padding: 34px 28px;
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid var(--line);
  transition: all .35s cubic-bezier(.4, 0, .2, 1);
  position: relative;
  overflow: hidden;
}
.adv::before {
  content: "";
  position: absolute;
  left: 0; top: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan-500), var(--gold-500));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s ease;
}
.adv:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.adv:hover::before { transform: scaleX(1); }
.adv__icon {
  width: 54px;
  height: 54px;
  border-radius: 15px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--cyan-100), #fff);
  border: 1px solid #F7E2C4;
  margin-bottom: 20px;
}
.adv__icon svg { width: 27px; height: 27px; }
.adv h3 { font-size: 18px; margin-bottom: 10px; }
.adv p { font-size: 14px; color: var(--muted); line-height: 1.85; }

/* ==========================================================================
   工程案例
   ========================================================================== */
.grid-cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  display: block;
  box-shadow: var(--shadow-sm);
}
.case svg,
.case img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s cubic-bezier(.4, 0, .2, 1); }
.case:hover svg,
.case:hover img { transform: scale(1.07); }
.case__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 25, 46, 0) 38%, rgba(8, 25, 46, .88) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 26px;
  color: #fff;
}
.case__cat {
  font-size: 12px;
  letter-spacing: 2px;
  color: #FFAC4F;
  font-weight: 600;
  margin-bottom: 8px;
}
.case__title { color: #fff; font-size: 18px; margin-bottom: 8px; }
.case__meta { font-size: 13px; color: rgba(255, 255, 255, .7); display: flex; gap: 16px; flex-wrap: wrap; }
.case--lg { grid-column: span 2; aspect-ratio: auto; }
.case--lg .case__overlay { justify-content: flex-end; }

/* ==========================================================================
   服务流程
   ========================================================================== */
.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; position: relative; }
.flow::before {
  content: "";
  position: absolute;
  top: 40px;
  left: 9%;
  right: 9%;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--line) 0 8px, transparent 8px 16px);
  z-index: 0;
}
.flow__item { position: relative; z-index: 1; text-align: center; }
.flow__dot {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--cyan-100);
  display: grid;
  place-items: center;
  font-size: 26px;
  font-weight: 800;
  color: var(--cyan-600);
  box-shadow: 0 8px 22px rgba(12, 38, 66, .07);
  transition: all .35s ease;
}
.flow__item:hover .flow__dot {
  background: linear-gradient(135deg, var(--cyan-500), var(--cyan-600));
  color: #fff;
  border-color: transparent;
  transform: translateY(-6px) scale(1.05);
}
.flow__item h3 { font-size: 16.5px; margin-bottom: 8px; }
.flow__item p { font-size: 13.5px; color: var(--muted); line-height: 1.8; }

/* ==========================================================================
   CTA 横幅
   ========================================================================== */
.cta-band {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  padding: 56px 60px;
  background: linear-gradient(110deg, var(--navy-900) 0%, var(--navy-700) 52%, var(--cyan-600) 100%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.cta-band::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 148, 29, .3), transparent 68%);
}
.cta-band__text { position: relative; z-index: 1; }
.cta-band h2 { color: #fff; font-size: 30px; margin-bottom: 12px; }
.cta-band p { color: rgba(255, 255, 255, .78); font-size: 15px; }
.cta-band__actions { position: relative; z-index: 1; display: flex; gap: 14px; flex-wrap: wrap; }

/* ==========================================================================
   内页 Hero
   ========================================================================== */
.page-hero {
  position: relative;
  padding: 92px 0 76px;
  background: linear-gradient(120deg, var(--navy-900), var(--navy-700) 60%, var(--cyan-600));
  overflow: hidden;
}
.page-hero::after {
  content: "";
  position: absolute;
  right: -120px;
  bottom: -160px;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(63, 196, 214, .28), transparent 66%);
}
.page-hero__inner { position: relative; z-index: 1; }
.page-hero h1 { color: #fff; font-size: 42px; letter-spacing: -.5px; margin-bottom: 14px; }
.page-hero p { color: rgba(255, 255, 255, .76); font-size: 16px; max-width: 660px; line-height: 1.9; }
.page-hero__deco {
  position: absolute;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  width: 300px;
  opacity: .5;
  z-index: 1;
  pointer-events: none;
}

.breadcrumb { font-size: 13.5px; color: rgba(255, 255, 255, .6); margin-bottom: 18px; }
.breadcrumb a:hover { color: var(--gold-500); }
.breadcrumb span { margin: 0 8px; }

/* ==========================================================================
   联系我们
   ========================================================================== */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 46px; align-items: start; }

.info-list { display: grid; gap: 18px; }
.info-card {
  display: flex;
  gap: 18px;
  padding: 22px 24px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--line);
  transition: all .3s ease;
}
.info-card:hover { border-color: var(--cyan-400); box-shadow: var(--shadow-sm); }
.info-card__icon {
  width: 46px;
  height: 46px;
  flex: none;
  border-radius: 13px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--cyan-100), #fff);
  border: 1px solid #F7E2C4;
}
.info-card__icon svg { width: 22px; height: 22px; }
.info-card h4 { font-size: 14px; color: var(--muted); font-weight: 500; margin-bottom: 4px; }
.info-card strong { font-size: 17px; color: var(--navy-800); font-weight: 700; letter-spacing: .3px; }
.info-card small { display: block; font-size: 12.5px; color: var(--muted); margin-top: 3px; }

.form-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 34px 36px 38px;
  box-shadow: var(--shadow);
}
.form-card h3 { font-size: 22px; margin-bottom: 6px; }
.form-card > p { font-size: 13.5px; color: var(--muted); margin-bottom: 26px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { margin-bottom: 18px; }
.field label {
  display: block;
  font-size: 13.5px;
  color: var(--navy-700);
  font-weight: 600;
  margin-bottom: 8px;
}
.field label i { color: #E05252; font-style: normal; margin-left: 3px; }
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg-soft);
  color: var(--ink);
  font-size: 14.5px;
  transition: all .25s ease;
  outline: none;
}
.field textarea { resize: vertical; min-height: 108px; line-height: 1.7; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--cyan-500);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(247, 148, 29, .16);
}
.field input::placeholder, .field textarea::placeholder { color: #A9B6C4; }
.field select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236B7B8C' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; background-size: 16px; padding-right: 40px; }

.form-note { font-size: 12.5px; color: var(--muted); margin-top: 14px; text-align: center; }

.form-success {
  display: none;
  padding: 26px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--cyan-100), #fff);
  border: 1px solid #F5DDC0;
  text-align: center;
}
.form-success.is-show { display: block; }
.form-success h4 { font-size: 18px; margin-bottom: 8px; color: var(--navy-800); }
.form-success p { font-size: 13.5px; color: var(--muted); margin-bottom: 18px; }
.form-success pre {
  text-align: left;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
  font-size: 12.5px;
  line-height: 1.8;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--text);
  font-family: ui-monospace, Menlo, Consolas, monospace;
  margin-bottom: 16px;
  max-height: 220px;
  overflow: auto;
}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer { background: var(--navy-900); color: rgba(255, 255, 255, .62); padding: 68px 0 0; font-size: 14px; }
.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.25fr;
  gap: 44px;
  padding-bottom: 52px;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}
.footer__brand .brand__name { color: #fff; }
.footer__brand .brand__en { color: rgba(255, 255, 255, .42); }
.footer__brand p { margin-top: 20px; line-height: 1.9; font-size: 13.5px; max-width: 330px; }
.footer__social { display: flex; gap: 12px; margin-top: 22px; }
.footer__social a {
  width: 38px; height: 38px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, .08);
  transition: all .28s ease;
}
.footer__social a:hover { background: var(--cyan-600); transform: translateY(-3px); }
.footer__social svg { width: 18px; height: 18px; }

.footer__col h4 {
  color: #fff;
  font-size: 15.5px;
  margin-bottom: 20px;
  letter-spacing: .5px;
  position: relative;
  padding-bottom: 12px;
}
.footer__col h4::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 28px; height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan-500), var(--gold-500));
}
.footer__col ul { display: grid; gap: 11px; }
.footer__col a:hover { color: var(--cyan-400); }
.footer__col li { display: flex; gap: 9px; align-items: flex-start; line-height: 1.75; font-size: 13.5px; }
.footer__col li svg { width: 15px; height: 15px; flex: none; margin-top: 5px; color: var(--cyan-400); }
.footer__col li strong { color: #fff; font-weight: 600; }

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  padding: 24px 0 28px;
  font-size: 13px;
  color: rgba(255, 255, 255, .45);
}

/* 浮动侧边栏 */
.float-bar {
  position: fixed;
  right: 22px;
  bottom: 28px;
  z-index: 800;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.float-btn {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  background: #fff;
  box-shadow: var(--shadow-lg);
  display: grid;
  place-items: center;
  cursor: pointer;
  position: relative;
  border: none;
  transition: all .3s cubic-bezier(.4, 0, .2, 1);
}
.float-btn svg { width: 24px; height: 24px; }
.float-btn:hover { transform: translateY(-4px); }
.float-btn--primary { background: linear-gradient(135deg, var(--cyan-500), var(--cyan-600)); }
.float-btn--primary svg { color: #fff; }
.float-btn::after {
  content: attr(data-tip);
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%) translateX(6px);
  background: var(--navy-800);
  color: #fff;
  font-size: 13px;
  padding: 7px 14px;
  border-radius: 8px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: all .25s ease;
}
.float-btn:hover::after { opacity: 1; transform: translateY(-50%) translateX(0); }

/* ==========================================================================
   滚动入场动画
   ========================================================================== */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s cubic-bezier(.22, 1, .36, 1); }
.reveal.is-in { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: .08s; }
.reveal-d2 { transition-delay: .16s; }
.reveal-d3 { transition-delay: .24s; }
.reveal-d4 { transition-delay: .32s; }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1080px) {
  .section { padding: 76px 0; }
  .grid-products, .grid-cases { grid-template-columns: repeat(2, 1fr); }
  .grid-adv { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(3, 1fr); row-gap: 34px; }
  .flow::before { display: none; }
  .hero h1 { font-size: 44px; }
  .about-split { gap: 44px; }
  .page-hero__deco { display: none; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 38px; }
}

@media (max-width: 860px) {
  .topbar { display: none; }
  .site-header__inner { height: 70px; }
  .nav {
    position: fixed;
    inset: 70px 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    padding: 12px 18px 26px;
    box-shadow: 0 20px 40px rgba(12, 38, 66, .14);
    transform: translateY(-140%);
    transition: transform .4s cubic-bezier(.22, 1, .36, 1);
    max-height: calc(100vh - 70px);
    overflow-y: auto;
  }
  .nav.is-open { transform: translateY(0); }
  .nav a { padding: 15px 10px; border-bottom: 1px solid var(--line); font-size: 16px; }
  .nav a::after { display: none; }
  .burger { display: flex; }
  .header__phone { display: none; }
  .header__actions .btn { display: none; }

  .hero { min-height: auto; }
  .hero__inner { padding: 92px 0 108px; }
  .hero h1 { font-size: 34px; }
  .hero__lead { font-size: 15.5px; }
  .stats { margin-top: -46px; }
  .stats__grid { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3)::before, .stat + .stat::before { display: none; }
  .stat { border-bottom: 1px solid var(--line); padding: 26px 18px; }
  .stat:nth-child(3), .stat:nth-child(4) { border-bottom: none; }

  .section-title { font-size: 27px; }
  .page-hero { padding: 66px 0 56px; }
  .page-hero h1 { font-size: 30px; }

  .about-split { grid-template-columns: 1fr; gap: 34px; }
  .about-split__deco { display: none; }
  .about-split__badge { left: 12px; bottom: -16px; padding: 14px 18px; }

  .contact-grid { grid-template-columns: 1fr; gap: 30px; }
  .form-card { padding: 26px 22px 30px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }

  .cta-band { padding: 38px 28px; }
  .cta-band h2 { font-size: 23px; }

  .footer__grid { grid-template-columns: 1fr; gap: 34px; padding-bottom: 38px; }
  .float-bar { right: 14px; bottom: 16px; }
  .float-btn { width: 48px; height: 48px; border-radius: 14px; }
  .float-btn::after { display: none; }
}

@media (max-width: 620px) {
  .container { padding: 0 18px; }
  .grid-products, .grid-cases, .grid-adv { grid-template-columns: 1fr; }
  .case--lg { grid-column: auto; aspect-ratio: 4 / 3; }
  .flow { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 28px; }
  .hero__actions .btn { flex: 1; justify-content: center; }
  .section { padding: 60px 0; }
}

/* ==========================================================================
   产品详情行 / 参数表（内页）
   ========================================================================== */
.detail-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  padding: 56px 0;
  border-bottom: 1px dashed var(--line);
}
.detail-row:last-child { border-bottom: none; }
.detail-row--rev .detail-row__media { order: 2; }
.detail-row__media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  aspect-ratio: 16 / 10;
  background: var(--bg-soft);
}
.detail-row__media img { width: 100%; height: 100%; object-fit: cover; }
.detail-row h3 { font-size: 26px; margin-bottom: 6px; }
.detail-row__kicker {
  font-size: 12.5px;
  letter-spacing: 2.4px;
  color: var(--cyan-600);
  font-weight: 700;
  text-transform: uppercase;
  display: block;
  margin-bottom: 10px;
}
.detail-row p { color: var(--muted); font-size: 15px; line-height: 1.95; margin-bottom: 18px; }
.detail-row ul { display: grid; gap: 10px; margin-bottom: 22px; }
.detail-row ul li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 14.5px;
  color: var(--text);
}
.detail-row ul svg { width: 18px; height: 18px; flex: none; margin-top: 5px; }

.spec-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  font-size: 14.5px;
}
.spec-table th,
.spec-table td {
  padding: 15px 20px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}
.spec-table th {
  background: linear-gradient(135deg, var(--navy-800), var(--navy-600));
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: .4px;
  white-space: nowrap;
}
.spec-table tbody tr:last-child td { border-bottom: none; }
.spec-table tbody tr:nth-child(even) { background: var(--bg-soft); }
.spec-table tbody tr:hover { background: var(--cyan-100); }
.spec-table td:first-child { font-weight: 600; color: var(--navy-800); white-space: nowrap; }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

@media (max-width: 900px) {
  .detail-row { grid-template-columns: 1fr; gap: 28px; padding: 40px 0; }
  .detail-row--rev .detail-row__media { order: 0; }
  .detail-row h3 { font-size: 22px; }
}


/* ==========================================================================
   资质与质检资料
   ========================================================================== */
.qual-grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 26px;
  align-items: start;
}
.qual-card {
  margin: 0;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform .35s cubic-bezier(.4, 0, .2, 1), box-shadow .35s ease;
}
.qual-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.qual-card img { width: 100%; display: block; }
.qual-card figcaption {
  padding: 14px 20px;
  font-size: 13.5px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  text-align: center;
  line-height: 1.7;
}
@media (max-width: 860px) {
  .qual-grid { grid-template-columns: 1fr; }
}

/* 页脚底部：服务语 + ICP 备案号 */
.footer__meta {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}
.footer__icp {
  color: rgba(255, 255, 255, .45);
  text-decoration: none;
  transition: color .25s ease;
}
.footer__icp:hover { color: var(--cyan-400); }
.footer__icp--pending { color: rgba(255, 255, 255, .38); }

/* ==========================================================================
   导航下拉菜单
   ========================================================================== */
.nav__item { position: relative; }
.nav__item > a { display: inline-flex; align-items: center; gap: 5px; }
.nav__item > a svg { opacity: .55; transition: transform .25s ease; }
.nav__item:hover > a svg { transform: rotate(180deg); }
.nav__sub {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translate(-50%, 10px);
  min-width: 230px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 10px;
  display: grid;
  gap: 2px;
  opacity: 0;
  visibility: hidden;
  transition: opacity .25s ease, transform .25s ease, visibility .25s;
  z-index: 80;
}
.nav__sub--wide {
  min-width: 480px;
  grid-template-columns: 1fr 1fr;
}
.nav__item:hover .nav__sub,
.nav__item:focus-within .nav__sub {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}
.nav__sub a {
  padding: 9px 12px;
  font-size: 14px;
  border-radius: 9px;
  white-space: nowrap;
  color: var(--text);
}
.nav__sub a:hover { background: var(--cyan-100); color: var(--cyan-600); }
.nav__sub::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 12px;
  height: 12px;
  background: #fff;
  border-left: 1px solid var(--line);
  border-top: 1px solid var(--line);
}
.topbar__link { color: inherit; }
.topbar__link:hover { color: var(--cyan-500); }

/* ==========================================================================
   文章卡片 / 资讯栏目
   ========================================================================== */
.acard {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 26px 26px 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: var(--shadow-sm);
  transition: transform .35s cubic-bezier(.4,0,.2,1), box-shadow .35s ease;
}
.acard:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.acard__meta { display: flex; align-items: center; gap: 10px; }
.acard__meta time { font-size: 12.5px; color: var(--muted); }
.acard__cat {
  font-size: 11.5px;
  font-weight: 700;
  color: var(--cyan-600);
  background: var(--cyan-100);
  border-radius: 999px;
  padding: 3px 10px;
}
.acard__title { font-size: 17.5px; line-height: 1.55; }
.acard__title a { color: var(--navy-800); }
.acard__title a:hover { color: var(--cyan-600); }
.acard__desc {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.85;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.acard__more {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--cyan-600);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* 首页知识百科三栏 */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.news-col {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow-sm);
}
.news-col__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 8px;
}
.news-col__head h3 { font-size: 17px; color: var(--navy-800); }
.news-col__head a { font-size: 13px; color: var(--cyan-600); font-weight: 600; }
.news-col ul { display: grid; }
.news-li {
  display: grid;
  grid-template-columns: 86px 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 13px 0;
  border-bottom: 1px dashed var(--line);
}
.news-li:last-child { border-bottom: none; }
.news-li time { font-size: 12.5px; color: var(--muted); }
.news-li a {
  font-size: 14px;
  color: var(--text);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-li a:hover { color: var(--cyan-600); }

/* 资讯栏目卡片 */
.cat-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: var(--shadow-sm);
}
.cat-card__head { display: flex; align-items: baseline; justify-content: space-between; }
.cat-card__head h3 { font-size: 19px; color: var(--navy-800); }
.cat-card__head span { font-size: 13px; color: var(--muted); }
.cat-card ul { flex: 1; display: grid; gap: 4px; }
.cat-card li {
  padding: 11px 0;
  border-bottom: 1px dashed var(--line);
  display: grid;
  gap: 4px;
}
.cat-card li:last-child { border-bottom: none; }
.cat-card time { font-size: 12px; color: var(--muted); }
.cat-card li a { font-size: 14px; color: var(--text); line-height: 1.6; }
.cat-card li a:hover { color: var(--cyan-600); }
.cat-card .btn { align-self: flex-start; }

/* ==========================================================================
   产品详情页
   ========================================================================== */
.pdetail {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 48px;
  align-items: center;
}
.pdetail__media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--bg-soft);
}
.pdetail__media img { width: 100%; display: block; }
.pdetail__info h2 { font-size: 30px; margin: 8px 0 14px; }
.pdetail__info > p { color: var(--muted); font-size: 15.5px; line-height: 1.9; }
.pdetail__info .about-list { margin: 20px 0 26px; }
.pdetail__actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* 正文排版 */
.prose { max-width: 920px; margin: 0 auto; }
.prose h2 {
  font-size: 21px;
  color: var(--navy-800);
  margin: 30px 0 12px;
  padding-left: 14px;
  border-left: 4px solid var(--cyan-500);
  line-height: 1.4;
}
.prose h2:first-child { margin-top: 0; }
.prose p { font-size: 15.5px; line-height: 2.05; color: #3A4A58; margin-bottom: 14px; }
.prose ul { display: grid; gap: 10px; margin: 0 0 16px; }
.prose ul li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.9;
  color: #3A4A58;
}
.prose ul li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .78em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan-500), var(--cyan-600));
}
.related-list li::before { display: none; }
.related-list li { padding-left: 0; }
.related-list a { color: var(--cyan-600); font-weight: 600; font-size: 15px; }
.related-list a:hover { text-decoration: underline; }

/* 造价说明块 */
.price-note {
  max-width: 920px;
  margin: 40px auto 0;
  display: flex;
  gap: 18px;
  align-items: flex-start;
  background: linear-gradient(135deg, #FFF9F0, var(--cyan-100));
  border: 1px solid #F3DFC2;
  border-radius: var(--radius-lg);
  padding: 26px 28px;
}
.price-note__icon { flex: none; width: 46px; height: 46px; }
.price-note__icon svg { width: 100%; height: 100%; }
.price-note h3 { font-size: 16.5px; color: var(--navy-800); margin-bottom: 8px; }
.price-note p { font-size: 14.5px; line-height: 1.95; color: #4A5560; }
.price-note b { color: var(--cyan-600); }

/* 文章页头 */
.article-head { max-width: 920px; margin: 0 auto; }
.article-head .section-title { font-size: 30px; }
.article-head .section-sub { text-align: left; margin-top: 14px; }

/* 小标签链接 */
.chip--link {
  display: inline-block;
  padding: 8px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13.5px;
  color: var(--text);
  margin: 0 6px;
  background: #fff;
}
.chip--link:hover { border-color: var(--cyan-500); color: var(--cyan-600); }

/* ==========================================================================
   页脚热门关键词
   ========================================================================== */
.footer__hot {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px 4px;
  padding: 22px 0;
  margin-top: 8px;
  border-top: 1px solid rgba(255, 255, 255, .12);
  font-size: 12.5px;
}
.footer__hot-label { color: rgba(255, 255, 255, .55); font-weight: 600; }
.footer__hot a {
  color: rgba(255, 255, 255, .62);
  padding: 3px 10px;
  border-radius: 999px;
  transition: color .2s ease, background .2s ease;
}
.footer__hot a:hover { color: #fff; background: rgba(255, 255, 255, .12); }

/* ==========================================================================
   移动端覆盖
   ========================================================================== */
@media (max-width: 960px) {
  .nav__sub { display: none; }
  .nav__item > a svg { display: none; }
  .news-grid { grid-template-columns: 1fr; }
  .pdetail { grid-template-columns: 1fr; gap: 26px; }
  .pdetail__info h2 { font-size: 24px; }
  .price-note { flex-direction: column; gap: 10px; padding: 22px; }
  .article-head .section-title { font-size: 24px; }
  .prose p, .prose ul li { font-size: 14.5px; }
}

/* ==========================================================================
   真实案例图集 + 资质证书墙
   ========================================================================== */
.casefig-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.casefig {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  transition: transform .35s cubic-bezier(.4, 0, .2, 1), box-shadow .35s ease;
}
.casefig:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.casefig img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
  transition: transform .6s cubic-bezier(.4, 0, .2, 1);
}
.casefig:hover img { transform: scale(1.05); }
.casefig figcaption {
  display: grid;
  gap: 3px;
  padding: 15px 18px 16px;
}
.casefig__year {
  font-size: 11.5px;
  font-weight: 700;
  color: var(--cyan-600);
  letter-spacing: 1.2px;
}
.casefig figcaption strong { font-size: 15.5px; color: var(--navy-800); line-height: 1.5; }
.casefig__loc { font-size: 13px; color: var(--muted); }

.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.cert-grid .qual-card { border-radius: var(--radius); }
.cert-grid figcaption { font-size: 13px; line-height: 1.65; }
.cert-grid figcaption small { color: var(--muted); font-size: 12px; }

@media (max-width: 900px) {
  .casefig-grid, .cert-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
}
@media (max-width: 560px) {
  .casefig-grid, .cert-grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   实景照片待补占位块（无实景照片的系列不使用任何生成图/网图）
   ========================================================================== */
.ph {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  height: 100%;
  min-height: 100%;
  background:
    repeating-linear-gradient(135deg, #F6F8FA 0 12px, #F1F4F7 12px 24px);
  color: #8494A3;
  text-align: center;
  padding: 24px 18px;
  box-sizing: border-box;
}
.ph__icon { width: 46px; height: 46px; opacity: .9; }
.ph__icon svg { width: 100%; height: 100%; display: block; }
.ph__text { font-size: 13.5px; font-weight: 600; color: #6E7F8F; letter-spacing: .5px; }
.ph__sub { font-size: 12px; color: #9AA8B5; }

.pcard__media--ph { background: #F1F4F7; }
.pcard__media--ph::after { display: none; }

/* 详情页大图占位：保持与图片一致的视觉分量 */
.pdetail__media--ph {
  min-height: 340px;
  display: flex;
  box-shadow: var(--shadow-sm);
  border: 1px dashed #D7DFE7;
  background: transparent;
}
.pdetail__media--ph .ph { min-height: 340px; }
.pdetail__media--ph .ph__icon { width: 58px; height: 58px; }
.pdetail__media--ph .ph__text { font-size: 15px; }
.pdetail__media--ph .ph__sub { font-size: 12.5px; }

/* 系列页主视觉占位 */
.about-split__visual--ph {
  min-height: 380px;
  display: flex;
  border: 1px dashed #D7DFE7;
  box-shadow: var(--shadow-sm);
}
.about-split__visual--ph .ph { min-height: 380px; }
.about-split__visual--ph .ph__icon { width: 54px; height: 54px; }
.about-split__visual--ph .ph__text { font-size: 14.5px; }

@media (max-width: 900px) {
  .pdetail__media--ph, .pdetail__media--ph .ph { min-height: 220px; }
  .about-split__visual--ph, .about-split__visual--ph .ph { min-height: 240px; }
}