/* ==========================================================================
   广瞬科技 GINSTANT — 官网设计系统
   深空藏青底 × 青蓝/琥珀金高光 · 暗色科技质感
   ========================================================================== */

:root {
  /* 背景层级 */
  --bg-0: #060A12;
  --bg-1: #0B1220;
  --bg-2: #101A2E;
  --bg-3: #16223C;
  --bg-4: #1D2B49;

  /* 描边 */
  --line: rgba(159, 176, 201, .14);
  --line-2: rgba(159, 176, 201, .26);
  --line-3: rgba(34, 211, 238, .34);

  /* 文字 */
  --txt: #FFFFFF;
  --txt-2: #9FB0C9;
  --txt-3: #6B7A94;
  --txt-4: #4A5870;

  /* 品牌色 */
  --blue: #3B82F6;
  --cyan: #22D3EE;
  --gold: #F5B841;
  --green: #34D399;
  --violet: #8B5CF6;
  --red: #F2665B;

  --grad: linear-gradient(115deg, #3B82F6 0%, #22D3EE 100%);
  --grad-gold: linear-gradient(115deg, #F5B841 0%, #FFD98A 100%);
  --grad-soft: linear-gradient(180deg, rgba(59, 130, 246, .12), rgba(34, 211, 238, .04));

  --shadow: 0 24px 60px -24px rgba(0, 0, 0, .85);
  --shadow-cyan: 0 20px 60px -26px rgba(34, 211, 238, .55);

  --r-sm: 10px;
  --r: 16px;
  --r-lg: 24px;
  --max: 1200px;

  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-num: "DIN Alternate", "Bahnschrift", "SF Pro Display", ui-sans-serif, system-ui, sans-serif;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg-1);
  color: var(--txt-2);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { color: var(--txt); margin: 0; line-height: 1.22; font-weight: 700; letter-spacing: -.01em; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; }
::selection { background: rgba(34, 211, 238, .3); color: #fff; }

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-0); }
::-webkit-scrollbar-thumb { background: #22304C; border-radius: 99px; border: 2px solid var(--bg-0); }
::-webkit-scrollbar-thumb:hover { background: #2E4468; }

/* ---------- 布局 ---------- */
.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 28px; }
.section { padding: 108px 0; position: relative; }
.section--tight { padding: 76px 0; }
.section--dark { background: var(--bg-0); }
.section--panel { background: linear-gradient(180deg, var(--bg-1), var(--bg-0)); }

.grid { display: grid; gap: 22px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }
.g5 { grid-template-columns: repeat(5, 1fr); }

/* ---------- 标题组 ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 12.5px; letter-spacing: .16em; text-transform: uppercase;
  color: var(--cyan); font-weight: 600; margin-bottom: 18px;
}
.eyebrow::before {
  content: ""; width: 26px; height: 1px; background: var(--grad); display: block;
}
.eyebrow--gold { color: var(--gold); }
.eyebrow--gold::before { background: var(--grad-gold); }

.h1 { font-size: clamp(32px, 3.9vw, 54px); line-height: 1.16; letter-spacing: -.025em; }
.h2 { font-size: clamp(26px, 2.9vw, 38px); letter-spacing: -.02em; }
.h3 { font-size: clamp(19px, 1.7vw, 23px); }
.h4 { font-size: 17px; }

.lead { font-size: 17px; color: var(--txt-2); line-height: 1.85; }
.muted { color: var(--txt-3); font-size: 14.5px; }
.grad-txt {
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.gold-txt {
  background: var(--grad-gold); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.sec-head { max-width: 940px; margin-bottom: 54px; }
.sec-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-head--center .eyebrow { justify-content: center; }
.sec-head .lead { margin-top: 18px; }

/* ---------- 顶部导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 90;
  backdrop-filter: saturate(140%) blur(18px);
  -webkit-backdrop-filter: saturate(140%) blur(18px);
  background: rgba(7, 12, 22, .74);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, background .3s;
}
.nav.is-stuck { border-bottom-color: var(--line); background: rgba(7, 12, 22, .92); }
.nav__in { display: flex; align-items: center; gap: 42px; height: 72px; }
.nav__logo { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.nav__logo img { width: 97px; height: auto; }
.nav__links { display: flex; gap: 0; margin-left: auto; }
.nav__links a {
  padding: 8px 12px; font-size: 14.5px; color: var(--txt-2); border-radius: 99px;
  transition: color .2s, background .2s; white-space: nowrap;
}
.nav__links a:hover { color: #fff; background: rgba(159, 176, 201, .08); }
.nav__links a.is-active { color: var(--cyan); background: rgba(34, 211, 238, .1); }
.nav__cta { margin-left: 8px; }

/* 导航 · 服务热线 */
.nav__tel {
  display: inline-flex; align-items: center; gap: 7px; margin-left: 14px;
  font-size: 14.5px; font-weight: 700; font-family: var(--font-num); letter-spacing: .01em;
  color: #fff; padding: 9px 16px; border-radius: 99px; white-space: nowrap;
  border: 1px solid rgba(245, 184, 65, .34); background: rgba(245, 184, 65, .09);
  transition: .22s;
}
.nav__tel:hover { background: rgba(245, 184, 65, .18); border-color: rgba(245, 184, 65, .58); transform: translateY(-1px); }
.nav__tel-i { font-size: 12px; color: var(--gold); }

/* 导航 · 下拉（加入我们） */
.nav__drop { position: relative; display: inline-flex; }
.nav__drop-t { display: inline-flex; align-items: center; gap: 6px; }
.caret {
  width: 0; height: 0; border-left: 4px solid transparent; border-right: 4px solid transparent;
  border-top: 4.5px solid currentColor; opacity: .72; transition: transform .22s;
}
.nav__drop:hover .caret { transform: rotate(180deg); }
.nav__drop-m {
  position: absolute; top: 100%; left: 50%; transform: translate(-50%, 8px);
  min-width: 178px; padding: 8px; border-radius: 14px;
  background: rgba(10, 17, 30, .98); border: 1px solid var(--line-2);
  box-shadow: 0 20px 50px rgba(0, 0, 0, .5);
  display: flex; flex-direction: column; gap: 2px;
  opacity: 0; visibility: hidden; pointer-events: none; transition: .2s;
}
.nav__drop:hover .nav__drop-m, .nav__drop:focus-within .nav__drop-m {
  opacity: 1; visibility: visible; pointer-events: auto; transform: translate(-50%, 4px);
}
.nav__drop-m a { display: block; padding: 10px 14px; border-radius: 9px; font-size: 14px; }
.nav__drop-m a.is-active { color: var(--cyan); background: rgba(34, 211, 238, .1); }

.nav__burger {
  display: none; margin-left: auto; width: 42px; height: 42px; border: 1px solid var(--line-2);
  border-radius: 12px; background: transparent; color: #fff; cursor: pointer; align-items: center;
  justify-content: center; flex-direction: column; gap: 5px;
}
.nav__burger span { display: block; width: 17px; height: 1.6px; background: #fff; border-radius: 2px; transition: .25s; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 13px 26px; border-radius: 99px; font-size: 15px; font-weight: 600;
  border: 1px solid transparent; cursor: pointer; transition: .25s; white-space: nowrap;
  line-height: 1;
}
.btn--primary {
  background: var(--grad); color: #04121F; box-shadow: var(--shadow-cyan);
}
.btn--primary:hover { transform: translateY(-2px); filter: brightness(1.08); }
.btn--ghost {
  background: rgba(159, 176, 201, .06); color: #fff; border-color: var(--line-2);
}
.btn--ghost:hover { background: rgba(159, 176, 201, .13); border-color: var(--line-3); }
.btn--gold { background: var(--grad-gold); color: #241802; }
.btn--gold:hover { transform: translateY(-2px); filter: brightness(1.06); }
.btn--sm { padding: 10px 20px; font-size: 14px; }
.btn--lg { padding: 16px 34px; font-size: 16px; }
.btn-row { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }

.arrow { display: inline-block; transition: transform .25s; }
.btn:hover .arrow, a:hover > .arrow { transform: translateX(4px); }

/* ---------- 标签 / 徽章 ---------- */
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 15px; border-radius: 99px; font-size: 13px; font-weight: 600;
  border: 1px solid var(--line-2); background: rgba(159, 176, 201, .05); color: var(--txt-2);
}
.pill--cyan { border-color: rgba(34, 211, 238, .35); background: rgba(34, 211, 238, .09); color: #7EE7F5; }
.pill--gold { border-color: rgba(245, 184, 65, .35); background: rgba(245, 184, 65, .09); color: #F7CB76; }
.pill--green { border-color: rgba(52, 211, 153, .32); background: rgba(52, 211, 153, .09); color: #6EE7B7; }
.pill-row { display: flex; gap: 10px; flex-wrap: wrap; }
.dot { width: 6px; height: 6px; border-radius: 99px; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }

/* ---------- 卡片 ---------- */
.card {
  background: linear-gradient(165deg, var(--bg-2), var(--bg-1));
  border: 1px solid var(--line); border-radius: var(--r); padding: 30px;
  position: relative; overflow: hidden; transition: border-color .3s, transform .3s;
}
.card:hover { border-color: var(--line-2); }
.card--hover:hover { transform: translateY(-4px); border-color: var(--line-3); }
.card--flat { background: rgba(16, 26, 46, .56); }
.card__icon {
  width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center;
  background: rgba(34, 211, 238, .1); border: 1px solid rgba(34, 211, 238, .24);
  color: var(--cyan); font-weight: 700; font-size: 15px; margin-bottom: 18px;
  font-family: var(--font-num);
}
.card__icon--gold { background: rgba(245, 184, 65, .1); border-color: rgba(245, 184, 65, .26); color: var(--gold); }
.card__icon--violet { background: rgba(139, 92, 246, .12); border-color: rgba(139, 92, 246, .28); color: #A78BFA; }
.card__icon--green { background: rgba(52, 211, 153, .1); border-color: rgba(52, 211, 153, .26); color: var(--green); }
.card__idx {
  position: absolute; top: 22px; right: 26px; font-family: var(--font-num);
  font-size: 40px; font-weight: 800; color: rgba(159, 176, 201, .1); line-height: 1;
}
.card h3 { margin-bottom: 12px; }
.card p { color: var(--txt-2); font-size: 15px; }

/* 顶部渐变描边卡 */
.card--edge::before {
  content: ""; position: absolute; inset: 0 0 auto; height: 2px;
  background: var(--grad); opacity: .8;
}
.card--edge-gold::before { background: var(--grad-gold); }

/* ---------- 数字 ---------- */
.num { font-family: var(--font-num); font-weight: 800; letter-spacing: -.03em; line-height: 1; }
.stat__val { font-family: var(--font-num); font-weight: 800; font-size: clamp(26px, 2.6vw, 34px); line-height: 1; color: #fff; letter-spacing: -.03em; }
.stat__label { font-size: 13.5px; color: var(--txt-3); margin-top: 10px; line-height: 1.6; }
.stat__delta { color: var(--green); font-size: 13px; font-weight: 700; }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding: 96px 0 84px; background: var(--bg-1); }
.hero__bg {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
}
.hero__bg img { width: 100%; height: 100%; object-fit: cover; opacity: .42; }
.hero__bg::after {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(1100px 620px at 78% 26%, rgba(34, 211, 238, .16), transparent 62%),
    radial-gradient(900px 560px at 12% 8%, rgba(59, 130, 246, .17), transparent 64%),
    linear-gradient(180deg, rgba(11, 18, 32, .78) 0%, rgba(11, 18, 32, .88) 55%, var(--bg-1) 96%);
}
.hero__grid-lines {
  position: absolute; inset: 0; z-index: 1; pointer-events: none; opacity: .5;
  background-image:
    linear-gradient(rgba(159, 176, 201, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(159, 176, 201, .055) 1px, transparent 1px);
  background-size: 62px 62px;
  mask-image: radial-gradient(1000px 560px at 50% 22%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(1000px 560px at 50% 22%, #000 20%, transparent 78%);
}
.hero__in { position: relative; z-index: 2; display: grid; grid-template-columns: 1.2fr .8fr; gap: 56px; align-items: center; }
.hero__in--full { grid-template-columns: 1fr; }
.hero h1 { font-size: clamp(30px, 3.6vw, 50px); margin: 20px 0 0; }
.hero .lead { margin-top: 22px; max-width: 560px; font-size: 17.5px; }
.hero .pill-row { margin-top: 26px; }
.hero .btn-row { margin-top: 34px; }
.hero__tel { margin-top: 22px; font-size: 14px; color: var(--txt-3); display: flex; align-items: center; gap: 9px; flex-wrap: wrap; }
.hero__tel a { font-family: var(--font-num); font-weight: 800; font-size: 18px; color: var(--gold); letter-spacing: .01em; }
.hero__tel a:hover { color: #FFD37A; }
.hero__meta {
  margin-top: 44px; padding-top: 26px; border-top: 1px solid var(--line);
  display: flex; gap: 34px; flex-wrap: wrap;
}
.hero__meta div { font-size: 13.5px; color: var(--txt-3); }
.hero__meta b { display: block; color: #fff; font-size: 20px; font-family: var(--font-num); font-weight: 800; margin-bottom: 3px; letter-spacing: -.02em; }

.hero__art { position: relative; }
.hero__art img {
  width: 100%; border-radius: var(--r-lg); border: 1px solid var(--line-2);
  box-shadow: var(--shadow);
}
.hero__badge {
  position: absolute; left: -18px; bottom: 28px;
  background: rgba(11, 18, 32, .9); backdrop-filter: blur(14px);
  border: 1px solid var(--line-3); border-radius: var(--r-sm);
  padding: 14px 18px; box-shadow: var(--shadow);
}
.hero__badge b { display: block; font-family: var(--font-num); font-size: 22px; color: #fff; font-weight: 800; }
.hero__badge span { font-size: 12.5px; color: var(--txt-3); }

/* ---------- 流程 / 步骤 ---------- */
.flow { display: grid; gap: 14px; grid-template-columns: repeat(4, 1fr); }
.flow--5 { grid-template-columns: repeat(5, 1fr); }
.flow--3 { grid-template-columns: repeat(3, 1fr); }
.step {
  background: linear-gradient(165deg, var(--bg-2), var(--bg-1));
  border: 1px solid var(--line); border-radius: var(--r); padding: 24px 22px;
  position: relative; transition: .3s;
}
.step:hover { border-color: var(--line-3); transform: translateY(-3px); }
.step__no {
  font-family: var(--font-num); font-size: 12px; font-weight: 800; letter-spacing: .1em;
  color: var(--cyan); margin-bottom: 10px; display: block;
}
.step h4 { font-size: 16.5px; margin-bottom: 8px; }
.step p { font-size: 13.5px; color: var(--txt-3); line-height: 1.7; }

/* 横向时间轴 */
.tl { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.tl::before {
  content: ""; position: absolute; top: 15px; left: 12px; right: 12px; height: 1px;
  background: linear-gradient(90deg, rgba(34, 211, 238, .5), rgba(59, 130, 246, .28), rgba(159, 176, 201, .1));
}
.tl__item { position: relative; padding-top: 46px; }
.tl__dot {
  position: absolute; top: 8px; left: 0; width: 15px; height: 15px; border-radius: 99px;
  background: var(--bg-1); border: 2px solid var(--cyan); box-shadow: 0 0 0 5px rgba(34, 211, 238, .11);
}
.tl__wk { font-family: var(--font-num); font-size: 13px; font-weight: 800; color: var(--cyan); letter-spacing: .04em; }
.tl__item h4 { font-size: 16.5px; margin: 8px 0 10px; }
.tl__item p { font-size: 14px; color: var(--txt-2); }
.tl__item .hl { display: block; margin-top: 12px; font-size: 13.5px; color: var(--gold); }

/* ---------- 表格对比 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r); background: rgba(16, 26, 46, .5); }
table.cmp { width: 100%; border-collapse: collapse; min-width: 860px; }
table.cmp th, table.cmp td { padding: 17px 22px; text-align: left; font-size: 14.5px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.cmp thead th { font-size: 14px; color: var(--txt-3); font-weight: 600; letter-spacing: .04em; background: rgba(6, 10, 18, .6); }
table.cmp tbody tr:last-child td { border-bottom: 0; }
table.cmp td:first-child, table.cmp th:first-child { color: #fff; font-weight: 600; width: 132px; white-space: nowrap; }
table.cmp .col-g { background: linear-gradient(180deg, rgba(34, 211, 238, .08), rgba(34, 211, 238, .02)); }
table.cmp thead .col-g { color: var(--cyan); }
table.cmp .col-g { color: #D9F5FA; font-weight: 600; }
table.cmp .bad { color: var(--txt-4); }

/* ---------- 表格横向滚动提示（仅窄屏） ---------- */
.scroll-hint { display: none; font-size: 12.5px; color: var(--txt-4); margin-bottom: 12px; letter-spacing: .02em; }
@media (max-width: 860px) { .scroll-hint { display: block; } }

/* ---------- 案例 ---------- */
.case {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0;
  border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden;
  background: linear-gradient(165deg, var(--bg-2), var(--bg-1));
}
.case:nth-child(even) .case__media { order: 2; }
.case__media { position: relative; min-height: 340px; }
.case__media img { width: 100%; height: 100%; object-fit: cover; }
.case__media::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(11, 18, 32, .5), transparent 55%);
}
.case:nth-child(even) .case__media::after { background: linear-gradient(270deg, rgba(11, 18, 32, .5), transparent 55%); }
.case__body { padding: 40px 40px 36px; }
.case__tag { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; }
.case__body h3 { font-size: clamp(19px, 1.9vw, 25px); margin-bottom: 16px; }
.case__row { margin-top: 20px; }
.case__row h5 {
  font-size: 12.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--cyan);
  font-weight: 700; margin: 0 0 10px;
}
.case__row h5.gold { color: var(--gold); }
.case__row p { font-size: 14.5px; color: var(--txt-2); }
.case__row ul li {
  position: relative; padding-left: 20px; font-size: 14.5px; color: var(--txt-2); margin-bottom: 8px;
}
.case__row ul li::before {
  content: ""; position: absolute; left: 2px; top: 11px; width: 7px; height: 1px; background: var(--cyan);
}
.case__kpi { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 24px; }
.kpi {
  background: rgba(6, 10, 18, .5); border: 1px solid var(--line); border-radius: var(--r-sm); padding: 16px 18px;
}
.kpi b { display: block; font-family: var(--font-num); font-size: 21px; font-weight: 800; color: #fff; letter-spacing: -.02em; }
.kpi b.gold { color: var(--gold); }
.kpi b.green { color: var(--green); }
.kpi span { font-size: 12.5px; color: var(--txt-3); line-height: 1.5; display: block; margin-top: 7px; }
.case__quote {
  margin-top: 24px; padding-left: 18px; border-left: 2px solid var(--gold);
  font-size: 14.5px; color: var(--txt-2); font-style: normal;
}

/* 数据墙 */
.wall { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.wall__item {
  background: linear-gradient(165deg, var(--bg-2), var(--bg-1));
  border: 1px solid var(--line); border-radius: var(--r); padding: 24px 22px;
  transition: .3s;
}
.wall__item:hover { border-color: var(--line-3); transform: translateY(-4px); }
.wall__name { font-size: 14.5px; color: #fff; font-weight: 600; }
.wall__cat { font-size: 12.5px; color: var(--txt-4); margin-top: 4px; }
.wall__num { margin-top: 18px; font-family: var(--font-num); font-size: 25px; font-weight: 800; letter-spacing: -.03em; color: #fff; }
.wall__num em { font-style: normal; color: var(--txt-4); font-size: 19px; }
.wall__num i { font-style: normal; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.wall__lab { font-size: 12.5px; color: var(--txt-3); margin-top: 9px; }

/* ---------- 引擎 / 架构图 ---------- */
.engines { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.engine {
  border: 1px solid var(--line); border-radius: var(--r-lg); padding: 32px 28px;
  background: linear-gradient(180deg, rgba(22, 34, 60, .76), rgba(11, 18, 32, .8));
  position: relative; overflow: hidden;
}
.engine::before { content: ""; position: absolute; inset: 0 0 auto; height: 2px; background: var(--grad); }
.engine--gold::before { background: var(--grad-gold); }
.engine--violet::before { background: linear-gradient(115deg, #8B5CF6, #22D3EE); }
.engine__tag { font-size: 12.5px; letter-spacing: .14em; text-transform: uppercase; color: var(--cyan); font-weight: 700; }
.engine--gold .engine__tag { color: var(--gold); }
.engine--violet .engine__tag { color: #A78BFA; }
.engine h3 { font-size: 23px; margin: 12px 0 8px; }
.engine .desc { font-size: 14px; color: var(--txt-3); min-height: 44px; }
.engine ol { counter-reset: e; margin-top: 22px; display: grid; gap: 12px; }
.engine ol li {
  counter-increment: e; position: relative; padding-left: 34px; font-size: 14.5px; color: var(--txt-2);
  line-height: 1.7;
}
.engine ol li::before {
  content: counter(e, decimal-leading-zero); position: absolute; left: 0; top: 2px;
  font-family: var(--font-num); font-size: 11.5px; font-weight: 800; color: var(--cyan);
  border: 1px solid var(--line-2); border-radius: 6px; padding: 2px 5px; line-height: 1;
}
.engine--gold ol li::before { color: var(--gold); }
.engine--violet ol li::before { color: #A78BFA; }

/* 中枢条 */
.hub {
  margin-top: 20px; display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
  border: 1px dashed var(--line-3); border-radius: var(--r); padding: 20px 26px;
  background: rgba(34, 211, 238, .04);
}
.hub b { color: #fff; font-size: 15.5px; }
.hub span { font-size: 14px; color: var(--txt-3); }

/* ---------- 问答 / 对话 ---------- */
.chat { display: grid; gap: 14px; }
.bubble { border-radius: 14px; padding: 15px 19px; font-size: 14.5px; max-width: 92%; }
.bubble--q { background: rgba(159, 176, 201, .08); border: 1px solid var(--line); color: #fff; margin-left: auto; }
.bubble--a { background: rgba(34, 211, 238, .07); border: 1px solid rgba(34, 211, 238, .22); color: var(--txt-2); }
.bubble--a b { color: var(--cyan); }

/* ---------- CTA ---------- */
.cta {
  position: relative; overflow: hidden; border: 1px solid var(--line-2); border-radius: var(--r-lg);
  padding: 66px 56px; text-align: center;
  background: linear-gradient(150deg, rgba(22, 34, 60, .9), rgba(11, 18, 32, .95));
}
.cta__bg { position: absolute; inset: 0; object-fit: cover; width: 100%; height: 100%; opacity: .34; }
.cta__in { position: relative; z-index: 2; }
.cta h2 { font-size: clamp(28px, 3.4vw, 46px); }
.cta .lead { margin: 18px auto 0; max-width: 740px; }
.cta .btn-row { justify-content: center; margin-top: 32px; }

/* ---------- 表单 ---------- */
.form { display: grid; gap: 16px; }
.field { display: grid; gap: 8px; }
.field label { font-size: 13.5px; color: var(--txt-3); }
.field input, .field select, .field textarea {
  width: 100%; padding: 13px 16px; border-radius: var(--r-sm);
  background: rgba(6, 10, 18, .62); border: 1px solid var(--line-2); color: #fff;
  font-family: inherit; font-size: 15px; transition: .2s;
}
.field input::placeholder, .field textarea::placeholder { color: var(--txt-4); }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(34, 211, 238, .13);
}
.field select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--txt-3) 50%), linear-gradient(135deg, var(--txt-3) 50%, transparent 50%); background-position: calc(100% - 20px) 21px, calc(100% - 15px) 21px; background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; }
.field select option { background: var(--bg-2); color: #fff; }

/* ---------- 页脚 ---------- */
.footer { background: var(--bg-0); border-top: 1px solid var(--line); padding: 62px 0 34px; }
.footer__top { display: grid; grid-template-columns: 1.55fr .95fr 1fr .95fr .95fr; gap: 34px; }
.footer__brand img { width: 91px; height: auto; margin-bottom: 18px; }
.footer__brand p { font-size: 14px; color: var(--txt-3); max-width: 300px; }
.footer__tel { margin-top: 18px; display: flex; align-items: baseline; gap: 9px; }
.footer__tel span { font-size: 12.5px; color: var(--txt-4); }
.footer__tel a { font-family: var(--font-num); font-size: 19px; font-weight: 800; color: var(--gold); letter-spacing: .01em; }
.footer__tel a:hover { color: #FFD37A; }
.footer h5 { color: #fff; font-size: 14px; margin: 0 0 16px; letter-spacing: .04em; }
.footer ul li { margin-bottom: 11px; }
.footer ul a { font-size: 14px; color: var(--txt-3); transition: color .2s; }
.footer ul a:hover { color: var(--cyan); }
.footer__bottom {
  margin-top: 46px; padding-top: 24px; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap;
  font-size: 13px; color: var(--txt-4);
}
.footer__icp { margin-top: 12px; font-size: 13px; color: var(--txt-4); }
.footer__icp a { color: inherit; }
.footer__icp a:hover { color: var(--txt-3); }

/* ---------- 信息表（关于我们等） ---------- */
table.kv { width: 100%; border-collapse: collapse; }
table.kv th, table.kv td { padding: 21px 6px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; font-size: 15px; line-height: 1.75; }
table.kv th { width: 148px; color: var(--txt-3); font-weight: 600; font-size: 14px; white-space: nowrap; }
table.kv td { color: var(--txt-2); }
table.kv tr:last-child th, table.kv tr:last-child td { border-bottom: 0; }
table.kv td b { color: #fff; }
/* 键值表专用卡片内边距（用类而不用 inline style，保证能被媒体查询覆盖） */
.card--kv { padding: 14px 34px; }

/* 技术底座标签 */
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  padding: 9px 16px; border-radius: 99px; font-size: 13.5px;
  border: 1px solid var(--line-2); background: rgba(159, 176, 201, .05); color: var(--txt-2);
}
.chip--hl { border-color: rgba(34, 211, 238, .32); background: rgba(34, 211, 238, .08); color: #8DEBF7; }

/* ---------- 岗位卡片（招贤纳士） ---------- */
.job {
  position: relative; padding: 34px 32px; border-radius: var(--r-lg);
  border: 1px solid var(--line); background: linear-gradient(180deg, rgba(16, 26, 46, .72), rgba(9, 15, 27, .72));
  transition: .25s;
}
.job:hover { border-color: var(--line-3); transform: translateY(-4px); }
.job__head { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
.job__tag {
  display: inline-block; padding: 5px 12px; border-radius: 99px; font-size: 12.5px; letter-spacing: .04em;
  border: 1px solid rgba(34, 211, 238, .3); background: rgba(34, 211, 238, .09); color: #8DEBF7;
}
.job__tag--gold { border-color: rgba(245, 184, 65, .34); background: rgba(245, 184, 65, .1); color: var(--gold); }
.job h3 { margin: 14px 0 10px; }
.job__meta { display: flex; flex-wrap: wrap; gap: 9px; margin: 16px 0 22px; }
.job__meta span {
  font-size: 12.5px; color: var(--txt-3); padding: 5px 11px; border-radius: 7px;
  border: 1px solid var(--line); background: rgba(159, 176, 201, .04);
}
.job__sec { margin-top: 20px; }
.job__sec h5 { color: #fff; font-size: 14px; margin: 0 0 12px; letter-spacing: .02em; }
.job__li { position: relative; padding-left: 18px; font-size: 14.5px; color: var(--txt-2); line-height: 1.8; margin-bottom: 7px; }
.job__li::before { content: ""; position: absolute; left: 0; top: 10px; width: 5px; height: 5px; border-radius: 50%; background: var(--cyan); opacity: .8; }
.job__li b { color: #fff; }

/* ---------- 服务体系卡片（代理商） ---------- */
.sup { padding: 26px 24px; border-radius: var(--r); border: 1px solid var(--line); background: rgba(16, 26, 46, .5); transition: .25s; }
.sup:hover { border-color: var(--line-3); transform: translateY(-3px); }
.sup__no { font-family: var(--font-num); font-size: 13px; font-weight: 800; color: var(--cyan); letter-spacing: .08em; }
.sup h4 { margin: 12px 0 9px; }
.sup p { font-size: 14px; color: var(--txt-3); line-height: 1.75; }

/* ---------- 大号电话 ---------- */
.telbox {
  display: inline-flex; align-items: center; gap: 14px; padding: 16px 26px; border-radius: 99px;
  border: 1px solid rgba(245, 184, 65, .4); background: rgba(245, 184, 65, .08);
  transition: .22s; margin-top: 8px;
}
.telbox:hover { background: rgba(245, 184, 65, .16); transform: translateY(-2px); }
.telbox__lab { font-size: 13px; color: var(--txt-3); }
.telbox__num { font-family: var(--font-num); font-size: 26px; font-weight: 800; color: #fff; letter-spacing: .01em; }
.telbox__ico { font-size: 18px; color: var(--gold); }
@media (max-width: 560px) { .telbox__num { font-size: 21px; } .telbox { padding: 14px 18px; gap: 10px; } }

/* ---------- 表单状态 ---------- */
.form__note.ok { color: var(--green); }
.form__note.err { color: #FCA5A5; }
.form__note.load { color: var(--txt-2); }
.honey { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.btn[disabled] { opacity: .6; cursor: not-allowed; transform: none !important; }

/* ---------- 大号邮箱胶囊 ---------- */
.mailbox {
  display: inline-flex; align-items: center; gap: 14px; padding: 16px 26px; border-radius: 99px;
  border: 1px solid rgba(34, 211, 238, .4); background: rgba(34, 211, 238, .08);
  transition: .22s; margin-top: 14px; max-width: 100%;
}
.mailbox:hover { background: rgba(34, 211, 238, .15); transform: translateY(-2px); }
.mailbox__ico { font-size: 18px; color: var(--cyan); flex: 0 0 auto; }
.mailbox__lab { font-size: 13px; color: var(--txt-3); }
.mailbox__num { font-family: var(--font-num); font-size: 21px; font-weight: 800; color: #fff; letter-spacing: .01em; word-break: break-all; }

/* ---------- 电话 / 邮箱并排 ---------- */
.contact-pills { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 14px; }
.contact-pills .telbox, .contact-pills .mailbox { margin-top: 0; }

/* ---------- 地址条目 ---------- */
.addr { margin-top: 16px; display: grid; gap: 12px; }
.addr p { font-size: 14px; color: var(--txt-2); line-height: 1.7; overflow-wrap: anywhere; }
.addr b { display: block; color: var(--txt-4); font-size: 12.5px; font-weight: 600; letter-spacing: .04em; margin-bottom: 2px; }
.addr a { color: var(--cyan); }
.addr a:hover { color: #67E8F9; }

/* ---------- 页脚联系方式 ---------- */
.footer__mail { margin-top: 12px; display: flex; align-items: baseline; gap: 9px; flex-wrap: wrap; }
.footer__mail span { font-size: 12.5px; color: var(--txt-4); }
.footer__mail a { font-family: var(--font-num); font-size: 15px; font-weight: 700; color: var(--cyan); word-break: break-all; }
.footer__mail a:hover { color: #67E8F9; }
.footer__addr { margin-top: 16px; display: grid; gap: 9px; }
.footer__addr p { font-size: 13px; color: var(--txt-4); line-height: 1.65; max-width: 300px; overflow-wrap: anywhere; }
.footer__addr b { color: var(--txt-3); font-weight: 600; margin-right: 7px; }

/* ---------- 微交互 ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s cubic-bezier(.22,.7,.3,1), transform .7s cubic-bezier(.22,.7,.3,1); }
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1200px) {
  .nav__tel { display: none; }
}
@media (max-width: 1080px) {
  .hero__in, .hero__in--full { grid-template-columns: 1fr; gap: 44px; }
  .hero__art { max-width: 640px; }
  .g4, .g5, .wall, .flow, .flow--5, .flow--3, .tl, .engines { grid-template-columns: repeat(2, 1fr); }
  .tl::before { display: none; }
  .footer__top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 860px) {
  .nav__links, .nav__cta, .nav__tel { display: none; }
  .nav__burger { display: flex; }
  .nav.is-open .nav__links {
    display: flex; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0;
    background: rgba(7, 12, 22, .98); border-bottom: 1px solid var(--line); padding: 14px 20px 22px; gap: 2px;
  }
  .nav.is-open .nav__links a { padding: 13px 14px; border-radius: 10px; }
  .nav.is-open .nav__drop { display: flex; flex-direction: column; }
  .nav.is-open .nav__drop-t .caret { display: none; }
  .nav.is-open .nav__drop-m {
    position: static; transform: none; opacity: 1; visibility: visible; pointer-events: auto;
    min-width: 0; padding: 0 0 0 14px; background: none; border: 0; box-shadow: none;
  }
  .nav.is-open .nav__drop-m a { font-size: 14px; color: var(--txt-3); }
  .section { padding: 76px 0; }
  .case { grid-template-columns: 1fr; }
  .sec-head h2 br { display: none; }
  .case:nth-child(even) .case__media { order: 0; }
  .case__media { min-height: 230px; }
  .case__body { padding: 30px 26px 30px; }
  .cta { padding: 48px 26px; }
  .g3, .g2 { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .wrap { padding: 0 18px; }
  .mailbox { padding: 14px 18px; gap: 10px; border-radius: 16px; width: 100%; }
  .mailbox__num { font-size: 16px; }
  .contact-pills > * { width: 100%; }
  .g4, .g5, .wall, .flow, .flow--5, .flow--3, .tl, .engines { grid-template-columns: 1fr; }
  .wall { grid-template-columns: 1fr 1fr; gap: 12px; }
  .wall__item { padding: 18px 16px; }
  .wall__num { font-size: 20px; margin-top: 14px; }
  .wall__num em { font-size: 15px; }
  .hero__meta { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
  .case__kpi { grid-template-columns: 1fr 1fr; }
  .footer__top { grid-template-columns: 1fr; }
  .hero { padding: 64px 0 56px; }
  .section { padding: 60px 0; }
  .card, .engine, .step { padding: 24px 20px; }
  .card--kv { padding: 10px 14px; }
  /* 键值表在手机上改为上下堆叠，避免右侧内容被裁切 */
  table.kv, table.kv tbody, table.kv tr, table.kv th, table.kv td { display: block; width: auto; }
  table.kv tr { padding: 15px 0; border-bottom: 1px solid var(--line); }
  table.kv tr:last-child { border-bottom: 0; }
  table.kv th, table.kv td { padding: 0; border: 0; white-space: normal; font-size: 14px; line-height: 1.7; }
  table.kv th { font-size: 12.5px; letter-spacing: .04em; }
  table.kv td { margin-top: 5px; overflow-wrap: anywhere; }
}