/* =========================================================
   DEJIE TECH — 深圳得捷电子科技发展有限公司
   企业官网统一样式表
   ========================================================= */

:root {
  --ink: #071713;
  --ink-2: #0c211b;
  --ink-3: #15342b;
  --green: #2ce0a0;
  --green-2: #12c184;
  --green-3: #0a8f63;
  --paper: #f4f7f5;
  --paper-2: #eaf1ed;
  --white: #ffffff;
  --text: #14241e;
  --muted: #62746c;
  --line: #dfe8e3;
  --line-dark: rgba(255, 255, 255, 0.12);
  --shadow: 0 18px 50px rgba(7, 23, 19, 0.08);
  --shadow-hover: 0 24px 60px rgba(7, 23, 19, 0.14);
  --radius: 16px;
  --radius-sm: 10px;
  --maxw: 1200px;
  --header-h: 76px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--white);
  color: var(--text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
h1, h2, h3, h4 { margin: 0; font-weight: 700; line-height: 1.25; letter-spacing: -0.02em; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

.container { width: min(var(--maxw), calc(100% - 48px)); margin: 0 auto; }

.section { padding: 96px 0; }
.section--paper { background: var(--paper); }
.section--dark { background: var(--ink); color: #e8f3ee; }
.section--tight { padding: 64px 0; }

.section-head { max-width: 720px; margin-bottom: 52px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 { font-size: clamp(30px, 3.6vw, 46px); }
.section-head p { margin-top: 18px; color: var(--muted); font-size: 17px; }
.section--dark .section-head p { color: #9fb8ae; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 18px;
  color: var(--green-3);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 22px; height: 2px; background: currentColor; }
.section--dark .eyebrow { color: var(--green); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: transform .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary { background: var(--green); color: #04150f; }
.btn--primary:hover { background: #57edbb; }
.btn--outline { border-color: rgba(255,255,255,.35); color: #fff; }
.btn--outline:hover { border-color: var(--green); color: var(--green); }
.btn--dark { background: var(--ink); color: #fff; }
.btn--dark:hover { background: var(--ink-3); }
.btn--line { border-color: var(--line); color: var(--text); background: #fff; }
.btn--line:hover { border-color: var(--green-3); color: var(--green-3); }
.btn .arrow { font-size: 18px; line-height: 1; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(7, 23, 19, .96);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line-dark);
}
.nav-wrap { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 32px; }

.brand { display: flex; align-items: center; gap: 11px; color: #fff; flex-shrink: 0; }
.brand__mark {
  width: 34px; height: 34px; flex: 0 0 34px;
  border-radius: 9px;
  background: linear-gradient(140deg, var(--green), var(--green-3));
  display: grid; place-items: center;
}
.brand__mark svg { width: 20px; height: 20px; }
.brand__txt { display: flex; flex-direction: column; line-height: 1.15; }
.brand__txt strong { font-size: 17px; letter-spacing: .02em; }
.brand__txt span { font-size: 9px; letter-spacing: .22em; color: #8fb3a4; margin-top: 3px; }

.nav { display: flex; align-items: center; gap: 34px; }
.nav a {
  position: relative;
  color: #c6d7cf;
  font-size: 14.5px;
  font-weight: 500;
  transition: color .2s;
  padding: 8px 0;
}
.nav a:hover, .nav a.is-active { color: #fff; }
.nav a.is-active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 2px; background: var(--green); border-radius: 2px;
}
.nav__cta {
  margin-left: 6px;
  padding: 10px 20px;
  background: var(--green);
  color: #04150f !important;
  border-radius: 999px;
  font-weight: 700;
}
.nav__cta:hover { background: #57edbb; }
.nav__cta::after { display: none !important; }

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--line-dark);
  background: transparent;
  border-radius: 10px;
  color: #fff;
  cursor: pointer;
  align-items: center; justify-content: center;
}
.nav-toggle svg { width: 20px; height: 20px; }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative;
  min-height: min(760px, calc(100vh - var(--header-h)));
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--ink);
  color: #fff;
}
.hero__bg { position: absolute; inset: 0; }
.hero__bg img { width: 100%; height: 100%; object-fit: cover; object-position: center 58%; opacity: .78; }
.hero__bg::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(4,18,13,.94) 0%, rgba(4,18,13,.76) 38%, rgba(4,18,13,.28) 72%, rgba(4,18,13,.45) 100%),
    linear-gradient(0deg, rgba(4,18,13,.9) 0%, transparent 40%);
}
.hero__grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(90deg, #000, transparent 70%);
  pointer-events: none;
}
.hero__inner { position: relative; z-index: 2; padding: 90px 0 60px; width: 100%; }
.hero__content { max-width: 690px; }
.hero__badge {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 7px 15px; border: 1px solid rgba(44,224,160,.35);
  border-radius: 999px; color: var(--green); font-size: 12.5px;
  letter-spacing: .06em; background: rgba(44,224,160,.07);
}
.hero__badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 12px var(--green); }
.hero h1 { margin: 26px 0 22px; font-size: clamp(38px, 5.2vw, 66px); line-height: 1.14; letter-spacing: -0.03em; }
.hero h1 em { font-style: normal; color: var(--green); }
.hero__lead { max-width: 560px; color: #c1d5cc; font-size: 17px; line-height: 1.85; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 38px; }

.hero__stats {
  position: relative; z-index: 2;
  border-top: 1px solid var(--line-dark);
  background: #06140f;
}
.hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); }
.hero-stat { padding: 26px 24px 26px 0; border-right: 1px solid var(--line-dark); }
.hero-stat:last-child { border-right: 0; }
.hero-stat:not(:first-child) { padding-left: 28px; }
.hero-stat strong { display: block; font-size: 27px; font-weight: 700; color: #fff; letter-spacing: -.02em; }
.hero-stat strong span { font-size: 15px; color: var(--green); margin-left: 3px; font-weight: 600; }
.hero-stat small { display: block; margin-top: 4px; color: #a9c4b8; font-size: 12.5px; letter-spacing: .04em; }

/* ---------- 产品分类卡 ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cat-card {
  position: relative; overflow: hidden;
  border-radius: var(--radius);
  background: var(--ink-2);
  color: #fff;
  min-height: 380px;
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 28px;
  isolation: isolate;
  transition: transform .28s ease, box-shadow .28s ease;
}
.cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.cat-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .42; z-index: -2; transition: transform .5s ease, opacity .4s; }
.cat-card:hover img { transform: scale(1.06); opacity: .52; }
.cat-card::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(0deg, rgba(4,16,12,.96) 4%, rgba(4,16,12,.45) 60%, rgba(4,16,12,.12)); }
.cat-card__no { position: absolute; top: 22px; right: 24px; font-size: 12px; letter-spacing: .18em; color: rgba(255,255,255,.55); }
.cat-card h3 { font-size: 23px; }
.cat-card .en { display: block; margin-top: 4px; font-size: 11px; letter-spacing: .16em; color: var(--green); text-transform: uppercase; }
.cat-card p { margin-top: 14px; font-size: 14px; color: #bdcfc7; line-height: 1.7; }
.cat-card__link { display: inline-flex; align-items: center; gap: 7px; margin-top: 20px; font-size: 14px; color: var(--green); font-weight: 600; }

/* ---------- 产品卡 ---------- */
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.prod-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s;
}
.prod-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: #c6ddd2; }
.prod-card__media { position: relative; aspect-ratio: 16 / 10; background: var(--paper); overflow: hidden; }
.prod-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s ease; }
.prod-card:hover .prod-card__media img { transform: scale(1.05); }
.tag {
  position: absolute; top: 14px; left: 14px;
  padding: 5px 12px; border-radius: 999px;
  background: rgba(7,23,19,.86); color: #fff;
  font-size: 11.5px; letter-spacing: .04em; backdrop-filter: blur(6px);
}
.tag--green { background: var(--green); color: #04150f; font-weight: 700; }
.prod-card__body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.prod-card__model { font-size: 12px; color: var(--green-3); font-weight: 700; letter-spacing: .08em; }
.prod-card h3 { margin-top: 8px; font-size: 19px; }
.prod-card__desc { margin-top: 10px; font-size: 14px; color: var(--muted); line-height: 1.65; flex: 1; }
.spec-list { margin-top: 18px; border-top: 1px dashed var(--line); padding-top: 14px; display: grid; gap: 8px; }
.spec-list li { display: flex; justify-content: space-between; gap: 12px; font-size: 13px; }
.spec-list li span { color: var(--muted); }
.spec-list li b { font-weight: 600; color: var(--text); text-align: right; }
.prod-card__foot { margin-top: 20px; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.prod-card__foot .btn { padding: 9px 18px; font-size: 13.5px; }
.prod-card__foot .hint { font-size: 12px; color: #96a49e; }

/* ---------- 优势 / 特性 ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.feature { padding: 30px 26px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.feature__icon {
  width: 46px; height: 46px; border-radius: 12px;
  background: var(--paper-2); color: var(--green-3);
  display: grid; place-items: center; margin-bottom: 22px;
}
.feature__icon svg { width: 23px; height: 23px; }
.feature h3 { font-size: 18px; }
.feature p { margin-top: 10px; font-size: 14px; color: var(--muted); line-height: 1.75; }

/* ---------- 数字 / 技术亮点 ---------- */
.tech-strip { display: grid; grid-template-columns: 1.15fr 1fr; gap: 60px; align-items: center; }
.tech-strip__visual { border-radius: var(--radius); overflow: hidden; }
.tech-strip__visual img { width: 100%; height: 100%; object-fit: cover; max-height: 460px; }
.tech-numbers { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px 32px; margin-top: 34px; }
.tech-num { border-left: 2px solid var(--green); padding-left: 18px; }
.tech-num strong { display: block; font-size: 30px; letter-spacing: -.03em; }
.tech-num small { color: var(--muted); font-size: 13px; }

/* ---------- 解决方案 ---------- */
.sol-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.sol-card {
  position: relative; padding: 34px; border-radius: var(--radius);
  background: var(--paper); border: 1px solid transparent;
  transition: background .25s, transform .25s, border-color .25s;
}
.sol-card:hover { background: #fff; border-color: var(--line); transform: translateY(-4px); box-shadow: var(--shadow); }
.sol-card__top { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.sol-card__idx { font-size: 13px; font-weight: 700; color: var(--green-3); letter-spacing: .1em; }
.sol-card h3 { font-size: 22px; margin-top: 12px; }
.sol-card > p { margin-top: 12px; font-size: 14.5px; color: var(--muted); line-height: 1.8; }
.sol-card__list { margin-top: 22px; display: grid; gap: 10px; }
.sol-card__list li { display: flex; gap: 10px; font-size: 14px; color: #33463e; }
.sol-card__list li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--green-2); margin-top: 9px; flex: 0 0 6px; }
.sol-card__foot { margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 8px; }
.chip { padding: 5px 12px; border-radius: 6px; background: #fff; border: 1px solid var(--line); font-size: 12px; color: var(--muted); }

/* ---------- 流程图 ---------- */
.flow { display: flex; align-items: stretch; gap: 0; margin-top: 44px; flex-wrap: wrap; }
.flow__node {
  flex: 1 1 150px; min-width: 150px;
  padding: 22px 18px; background: rgba(255,255,255,.045);
  border: 1px solid var(--line-dark); border-radius: 12px;
  text-align: center;
}
.flow__node .ic { font-size: 15px; font-weight: 700; letter-spacing: .12em; color: var(--green); }
.flow__node strong { display: block; margin-top: 10px; font-size: 15px; color: #fff; }
.flow__node small { display: block; margin-top: 5px; font-size: 11.5px; color: #8fae9f; }
.flow__arrow { display: grid; place-items: center; width: 38px; color: var(--green); font-size: 20px; flex: 0 0 38px; }

/* ---------- 步骤 ---------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; counter-reset: step; }
.step { padding: 26px 20px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.step::before {
  counter-increment: step; content: "0" counter(step);
  display: block; font-size: 13px; font-weight: 700; color: var(--green-3); letter-spacing: .1em;
}
.step h3 { margin-top: 14px; font-size: 16px; }
.step p { margin-top: 8px; font-size: 13px; color: var(--muted); line-height: 1.7; }

/* ---------- CTA ---------- */
.cta-band {
  position: relative; overflow: hidden;
  background: linear-gradient(110deg, var(--ink-2), var(--ink-3));
  color: #fff; border-radius: 22px;
  padding: 56px 60px;
  display: flex; align-items: center; justify-content: space-between; gap: 40px;
}
.cta-band::after {
  content: ""; position: absolute; right: -80px; top: -120px;
  width: 380px; height: 380px; border-radius: 50%;
  background: radial-gradient(circle, rgba(44,224,160,.24), transparent 65%);
  pointer-events: none;
}
.cta-band h2 { font-size: clamp(26px, 3vw, 36px); }
.cta-band p { margin-top: 12px; color: #a9c2b7; font-size: 15px; }
.cta-band__actions { display: flex; gap: 12px; flex-wrap: wrap; position: relative; z-index: 1; }

/* ---------- 内页页头 ---------- */
.page-hero {
  position: relative;
  padding: 78px 0 72px;
  background: var(--ink);
  color: #fff;
  overflow: hidden;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(90deg, #000, transparent 80%);
}
.page-hero::after {
  content: ""; position: absolute; width: 520px; height: 520px;
  right: -140px; top: -260px; border-radius: 50%;
  background: radial-gradient(circle, rgba(44,224,160,.16), transparent 65%);
}
.page-hero__inner { position: relative; z-index: 1; }
.page-hero h1 { font-size: clamp(34px, 4.4vw, 54px); }
.page-hero p { margin-top: 18px; max-width: 660px; color: #b3cbc0; font-size: 17px; line-height: 1.85; }
.breadcrumb { display: flex; gap: 10px; align-items: center; margin-bottom: 22px; font-size: 13px; color: #8ba99c; }
.breadcrumb a:hover { color: var(--green); }
.breadcrumb .sep { opacity: .5; }

/* ---------- 筛选 ---------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 34px; scroll-margin-top: 100px; }
.filter-btn {
  padding: 9px 22px; border: 1px solid var(--line); border-radius: 999px;
  background: #fff; color: var(--muted); font-size: 14px; cursor: pointer;
  transition: all .2s;
}
.filter-btn:hover { border-color: var(--green-3); color: var(--green-3); }
.filter-btn.is-active { background: var(--ink); border-color: var(--ink); color: #fff; font-weight: 600; }
.filter-count { margin-left: auto; align-self: center; font-size: 13px; color: var(--muted); }

.note-box {
  margin-top: 34px; padding: 18px 22px;
  background: var(--paper); border-left: 3px solid var(--green-2);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 13.5px; color: var(--muted); line-height: 1.8;
}

/* ---------- 两栏内容 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.split__img { border-radius: var(--radius); overflow: hidden; }
.split__img img { width: 100%; height: 100%; min-height: 380px; object-fit: cover; }
.para + .para { margin-top: 16px; }
.para { color: var(--muted); font-size: 15.5px; line-height: 1.9; }
.check-list { margin-top: 28px; display: grid; gap: 14px; }
.check-list li { display: flex; gap: 12px; font-size: 15px; }
.check-list .tick {
  width: 20px; height: 20px; flex: 0 0 20px; margin-top: 3px;
  border-radius: 50%; background: var(--green-2); color: #fff;
  display: grid; place-items: center; font-size: 11px; font-weight: 700;
}

/* ---------- 信息块 ---------- */
.info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.info-card { padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); }
.info-card .label { font-size: 12px; letter-spacing: .12em; color: var(--green-3); font-weight: 700; }
.info-card h3 { margin-top: 12px; font-size: 19px; }
.info-card p { margin-top: 10px; font-size: 14px; color: var(--muted); line-height: 1.75; }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; background: #fff; }
th, td { padding: 15px 20px; text-align: left; border-bottom: 1px solid var(--line); }
th { background: var(--paper); font-weight: 700; font-size: 13px; letter-spacing: .04em; color: #43564d; }
tbody tr:last-child td { border-bottom: 0; }
td:first-child { font-weight: 600; }

/* ---------- 联系 ---------- */
.contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 40px; align-items: start; }
.contact-card { padding: 34px; background: var(--ink); color: #fff; border-radius: var(--radius); }
.contact-card h3 { font-size: 22px; }
.contact-card > p { margin-top: 10px; color: #a5bfb3; font-size: 14px; }
.contact-item { margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--line-dark); }
.contact-item .label { font-size: 12px; letter-spacing: .12em; color: #82a697; text-transform: uppercase; }
.contact-item .value { display: block; margin-top: 8px; font-size: 19px; font-weight: 600; word-break: break-all; }
.contact-item .value a:hover { color: var(--green); }
.contact-item .sub { margin-top: 6px; font-size: 13px; color: #8fae9f; }
.copy-btn { margin-top: 14px; padding: 8px 16px; font-size: 12.5px; border: 1px solid rgba(44,224,160,.4); background: transparent; color: var(--green); border-radius: 999px; cursor: pointer; }
.copy-btn:hover { background: rgba(44,224,160,.1); }

.form-card { padding: 36px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
.form-card h3 { font-size: 22px; }
.form-card > p { margin-top: 8px; color: var(--muted); font-size: 14px; }
.form-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.field { margin-top: 20px; display: flex; flex-direction: column; gap: 8px; }
.field label { font-size: 13.5px; font-weight: 600; }
.field label .req { color: #d64a3a; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line);
  border-radius: 9px; background: #fbfdfc; color: var(--text); outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--green-2); box-shadow: 0 0 0 3px rgba(18,193,132,.13); background: #fff;
}
.field textarea { min-height: 116px; resize: vertical; }
.form-foot { margin-top: 26px; display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.form-foot .tip { font-size: 12.5px; color: var(--muted); flex: 1; min-width: 200px; }
.form-msg { margin-top: 16px; padding: 12px 16px; border-radius: 9px; background: var(--paper-2); color: var(--green-3); font-size: 13.5px; display: none; }
.form-msg.is-show { display: block; }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 12px; max-width: 860px; }
.faq details { border: 1px solid var(--line); border-radius: 12px; background: #fff; padding: 0 22px; }
.faq summary { padding: 18px 0; font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--green-3); font-size: 20px; line-height: 1; }
.faq details[open] summary::after { content: "\2212"; }
.faq details p { padding: 0 0 20px; color: var(--muted); font-size: 14.5px; line-height: 1.85; }

/* ---------- 页脚 ---------- */
.site-footer { background: #05120e; color: #a8c0b5; padding: 72px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.25fr; gap: 44px; }
.footer-grid h4 { color: #fff; font-size: 14px; letter-spacing: .06em; margin-bottom: 20px; }
.footer-grid a, .footer-grid li { font-size: 14px; line-height: 2.15; }
.footer-grid a:hover { color: var(--green); }
.footer-brand p { margin-top: 18px; font-size: 14px; line-height: 1.9; max-width: 320px; }
.footer-contact strong { display: block; color: #fff; font-size: 17px; margin-top: 4px; }
.footer-contact a { color: var(--green); }
.footer-bottom {
  margin-top: 56px; padding: 22px 0;
  border-top: 1px solid var(--line-dark);
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  font-size: 12.5px; color: #759186;
}
.footer-bottom a:hover { color: var(--green); }

/* ---------- 滚动出现 ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .cat-grid, .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-contact { grid-column: 1 / -1; }
  .nav { gap: 20px; }
}

@media (max-width: 860px) {
  .section { padding: 68px 0; }
  .tech-strip, .split, .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .hero-stat:nth-child(2) { border-right: 0; }
  .hero-stat:nth-child(3), .hero-stat:nth-child(4) { border-top: 1px solid var(--line-dark); }
  .sol-grid { grid-template-columns: 1fr; }
  .cta-band { flex-direction: column; align-items: flex-start; padding: 42px 32px; }
  .info-grid { grid-template-columns: repeat(2, 1fr); }
  .flow__arrow { transform: rotate(90deg); width: 100%; height: 34px; flex: 1 1 100%; }
  .nav-toggle { display: flex; }
  .nav {
    position: absolute; top: var(--header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #071713; border-bottom: 1px solid var(--line-dark);
    padding: 12px 24px 24px; display: none;
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,.07); }
  .nav a.is-active::after { display: none; }
  .nav__cta { margin: 16px 0 0; text-align: center; }
}

@media (max-width: 600px) {
  .container { width: calc(100% - 32px); }
  .hero { min-height: auto; }
  .hero__inner { padding: 70px 0 48px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .hero-stat { padding: 18px 12px; }
  .hero-stat:not(:first-child) { padding-left: 18px; }
  .hero-stat strong { font-size: 21px; }
  .cat-grid, .prod-grid, .feature-grid, .info-grid, .steps { grid-template-columns: 1fr; }
  .cat-card { min-height: 320px; }
  .form-row { grid-template-columns: 1fr; }
  .form-card, .contact-card { padding: 26px 22px; }
  .tech-numbers { grid-template-columns: 1fr 1fr; gap: 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .footer-brand { grid-column: 1 / -1; }
  .cta-band { padding: 34px 24px; }
  .page-hero { padding: 56px 0 52px; }
  .filter-count { width: 100%; margin: 8px 0 0; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}