/* =========================================================
   艾特森电子 · 全局样式
   ========================================================= */

/* ---------- 设计变量 ---------- */
:root {
  --brand: #0b5cff;
  --brand-2: #2c7bff;
  --mint: #00c8b4;
  --navy: #06101f;
  --navy-2: #0b1b33;
  --ink: #0c1a2b;
  --text: #43536a;
  --muted: #74849b;
  --line: #e4eaf2;
  --bg: #ffffff;
  --soft: #f5f8fd;
  --radius: 18px;
  --shadow: 0 18px 50px -20px rgba(9, 30, 66, 0.28);
  --max: 1180px;
  --grad: linear-gradient(135deg, #0b5cff 0%, #2c7bff 55%, #00c8b4 100%);
}

/* ---------- 重置与基础 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", system-ui,
    -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
h4,
h5 {
  margin: 0;
  color: var(--ink);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.015em;
}

p {
  margin: 0;
}

button {
  font: inherit;
  cursor: pointer;
  border: 0;
  background: none;
  color: inherit;
}

::selection {
  background: rgba(11, 92, 255, 0.16);
}

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 通用布局 ---------- */
.container {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: 24px;
}

.section {
  padding: clamp(64px, 7.5vw, 104px) 0;
}

.section--soft {
  background: var(--soft);
}

.section--tight {
  padding: clamp(48px, 5vw, 72px) 0;
}

.section-head {
  max-width: 740px;
  margin-bottom: clamp(36px, 4vw, 56px);
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brand);
}

.kicker::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--grad);
  border-radius: 2px;
}

.section-head h2 {
  margin: 14px 0 16px;
  font-size: clamp(27px, 3.3vw, 40px);
}

.lead {
  font-size: 16.5px;
  color: var(--muted);
  line-height: 1.8;
}

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 50px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease,
    color 0.25s ease, border-color 0.25s ease;
}

.btn svg {
  width: 17px;
  height: 17px;
  flex: none;
}

.btn--primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 14px 30px -14px rgba(11, 92, 255, 0.75);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 38px -14px rgba(11, 92, 255, 0.8);
}

.btn--ghost {
  border-color: rgba(255, 255, 255, 0.34);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.14);
  transform: translateY(-2px);
}

.btn--outline {
  border-color: var(--line);
  background: #fff;
  color: var(--ink);
}

.btn--outline:hover {
  border-color: rgba(11, 92, 255, 0.45);
  color: var(--brand);
  transform: translateY(-2px);
}

.btn--dark {
  background: var(--navy);
  color: #fff;
}

.btn--dark:hover {
  background: #0d2340;
  transform: translateY(-2px);
}

.btn--sm {
  height: 42px;
  padding: 0 20px;
  font-size: 14px;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-weight: 600;
  font-size: 15px;
  color: var(--brand);
}

.link-arrow svg {
  width: 16px;
  height: 16px;
  transition: transform 0.25s ease;
}

.link-arrow:hover svg {
  transform: translateX(4px);
}

/* ---------- 头部导航 ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(180%) blur(14px);
  transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 78px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: none;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--grad);
  color: #fff;
  box-shadow: 0 10px 22px -12px rgba(11, 92, 255, 0.9);
}

.brand__mark svg {
  width: 23px;
  height: 23px;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__text strong {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.brand__text small {
  font-size: 9.5px;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav__list a {
  position: relative;
  display: inline-block;
  padding: 6px 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  transition: color 0.2s ease;
}

.nav__list a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--grad);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.28s ease;
}

.nav__list a:hover,
.nav__list a[aria-current="page"] {
  color: var(--ink);
}

.nav__list a:hover::after,
.nav__list a[aria-current="page"]::after {
  transform: scaleX(1);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.header__phone {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.header__phone svg {
  width: 17px;
  height: 17px;
  color: var(--brand);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  padding: 10px;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.28s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 首页透明头部 */
.header--over {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  background: transparent;
  border-bottom-color: transparent;
  backdrop-filter: none;
  color: #fff;
}

.header--over .brand__text strong {
  color: #fff;
}

.header--over .brand__text small {
  color: rgba(255, 255, 255, 0.55);
}

.header--over .nav__list a {
  color: rgba(255, 255, 255, 0.76);
}

.header--over .nav__list a:hover,
.header--over .nav__list a[aria-current="page"] {
  color: #fff;
}

.header--over .header__phone {
  color: rgba(255, 255, 255, 0.9);
}

.header--over .nav-toggle {
  color: #fff;
}

.header--over.is-stuck {
  background: rgba(255, 255, 255, 0.96);
  border-bottom-color: var(--line);
  box-shadow: 0 16px 34px -28px rgba(6, 16, 31, 0.6);
  backdrop-filter: saturate(180%) blur(14px);
}

.header--over.is-stuck .brand__text strong {
  color: var(--ink);
}

.header--over.is-stuck .brand__text small {
  color: var(--muted);
}

.header--over.is-stuck .nav__list a {
  color: var(--text);
}

.header--over.is-stuck .nav__list a:hover,
.header--over.is-stuck .nav__list a[aria-current="page"] {
  color: var(--ink);
}

.header--over.is-stuck .header__phone {
  color: var(--ink);
}

.header--over.is-stuck .nav-toggle {
  color: var(--ink);
}

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: var(--navy);
  color: #fff;
  padding: 168px 0 132px;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.44;
}

.hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
      90deg,
      rgba(4, 12, 24, 0.97) 0%,
      rgba(4, 12, 24, 0.86) 42%,
      rgba(4, 12, 24, 0.52) 100%
    ),
    radial-gradient(circle at 78% 16%, rgba(11, 92, 255, 0.4), transparent 55%);
}

.hero__grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: linear-gradient(
      rgba(255, 255, 255, 0.05) 1px,
      transparent 1px
    ),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 76px 76px;
  mask-image: radial-gradient(circle at 40% 30%, #000 0%, transparent 72%);
  -webkit-mask-image: radial-gradient(
    circle at 40% 30%,
    #000 0%,
    transparent 72%
  );
  pointer-events: none;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 60px;
  align-items: center;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 16px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(6px);
}

.pill i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 4px rgba(0, 200, 180, 0.18);
}

.hero h1 {
  margin: 22px 0 22px;
  font-size: clamp(32px, 4.6vw, 58px);
  line-height: 1.12;
  color: #fff;
  letter-spacing: -0.025em;
}

.hero__desc {
  max-width: 560px;
  font-size: 17px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.72);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin-top: 38px;
  padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.66);
}

.hero__meta span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.hero__meta svg {
  width: 15px;
  height: 15px;
  color: var(--mint);
}

.hero-card {
  padding: 10px 28px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.055);
  backdrop-filter: blur(14px);
  box-shadow: 0 30px 60px -40px rgba(0, 0, 0, 0.9);
}

.hero-card__title {
  display: block;
  padding: 20px 0 8px;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
}

.hero-card li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.13);
}

.hero-card li:last-child {
  border-bottom: 0;
}

.hero-card li span {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.62);
}

.hero-card li strong {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
}

/* ---------- 数字统计 ---------- */
.stats-wrap {
  position: relative;
  z-index: 5;
  margin-top: -72px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 30px 8px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #fff;
  box-shadow: var(--shadow);
}

.stat {
  padding: 6px 18px;
  text-align: center;
  border-right: 1px solid var(--line);
}

.stat:last-child {
  border-right: 0;
}

.stat strong {
  display: block;
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--ink);
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.stat strong i {
  font-style: normal;
  font-size: 0.62em;
  color: var(--brand);
  margin-left: 2px;
}

.stat p {
  margin-top: 8px;
  font-size: 13.5px;
  color: var(--muted);
}

/* ---------- 卡片 ---------- */
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.card {
  position: relative;
  overflow: hidden;
  padding: 30px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 26px;
  right: 26px;
  height: 2px;
  background: var(--grad);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  border-color: rgba(11, 92, 255, 0.3);
  box-shadow: 0 26px 50px -30px rgba(9, 30, 66, 0.4);
}

.card:hover::before {
  opacity: 1;
}

.card__icon {
  display: grid;
  place-items: center;
  width: 50px;
  height: 50px;
  margin-bottom: 20px;
  border-radius: 14px;
  background: linear-gradient(
    140deg,
    rgba(11, 92, 255, 0.1),
    rgba(0, 200, 180, 0.14)
  );
  color: var(--brand);
}

.card__icon svg {
  width: 25px;
  height: 25px;
}

.card h3 {
  margin-bottom: 10px;
  font-size: 19px;
}

.card p {
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--brand);
}

.card__link svg {
  width: 14px;
  height: 14px;
  transition: transform 0.25s ease;
}

.card:hover .card__link svg {
  transform: translateX(3px);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.tags span {
  padding: 4px 11px;
  border-radius: 999px;
  background: rgba(11, 92, 255, 0.07);
  font-size: 12.5px;
  color: var(--brand);
}

/* ---------- 左右分栏 ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(36px, 5vw, 72px);
  align-items: center;
}

.split__media {
  position: relative;
}

.split__media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.split__media::before {
  content: "";
  position: absolute;
  inset: 18px -18px -18px 18px;
  z-index: -1;
  border-radius: 24px;
  border: 1px solid rgba(11, 92, 255, 0.18);
  background: linear-gradient(
    140deg,
    rgba(11, 92, 255, 0.06),
    rgba(0, 200, 180, 0.05)
  );
}

.badge-corner {
  position: absolute;
  left: -14px;
  bottom: 28px;
  padding: 14px 20px;
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 20px 40px -22px rgba(9, 30, 66, 0.5);
}

.badge-corner strong {
  display: block;
  font-size: 20px;
  color: var(--ink);
  line-height: 1.2;
}

.badge-corner span {
  font-size: 12.5px;
  color: var(--muted);
}

.split h2 {
  margin: 14px 0 18px;
  font-size: clamp(26px, 3vw, 36px);
}

.split > div > p {
  color: var(--muted);
  line-height: 1.85;
}

.checklist {
  margin-top: 26px;
}

.checklist li {
  display: flex;
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 15px;
}

.checklist li:last-child {
  border-bottom: 0;
}

.checklist svg {
  flex: none;
  width: 21px;
  height: 21px;
  margin-top: 3px;
  color: var(--mint);
}

.checklist strong {
  color: var(--ink);
  font-weight: 600;
}

.checklist span {
  display: block;
  font-size: 13.5px;
  color: var(--muted);
}

/* ---------- 规格表 ---------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
}

.spec-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 14.5px;
}

.spec-table th,
.spec-table td {
  padding: 15px 22px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.spec-table th {
  background: var(--soft);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--ink);
  white-space: nowrap;
}

.spec-table td:first-child {
  color: var(--muted);
  white-space: nowrap;
}

.spec-table td strong {
  color: var(--ink);
  font-weight: 600;
}

.spec-table tbody tr:last-child td {
  border-bottom: 0;
}

.spec-table tbody tr:hover {
  background: #fafcff;
}

/* ---------- 流程 ---------- */
.process {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  counter-reset: step;
}

.process li {
  position: relative;
  padding: 28px 26px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  counter-increment: step;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.process li::before {
  content: "0" counter(step);
  position: absolute;
  top: 22px;
  right: 24px;
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: rgba(11, 92, 255, 0.1);
  font-variant-numeric: tabular-nums;
}

.process li::after {
  content: "";
  position: absolute;
  left: 26px;
  top: 0;
  width: 42px;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: var(--grad);
}

.process li:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 44px -30px rgba(9, 30, 66, 0.4);
}

.process h3 {
  margin-bottom: 8px;
  font-size: 17px;
}

.process p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.75;
}

/* ---------- 行业应用 ---------- */
.industry {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.industry li {
  display: flex;
  gap: 16px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.industry li:hover {
  transform: translateY(-3px);
  border-color: rgba(11, 92, 255, 0.35);
}

.industry .icon {
  display: grid;
  place-items: center;
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--soft);
  color: var(--brand);
}

.industry .icon svg {
  width: 22px;
  height: 22px;
}

.industry h3 {
  margin-bottom: 3px;
  font-size: 16px;
}

.industry p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- CTA 区块 ---------- */
.cta {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  padding: clamp(40px, 5vw, 64px);
  border-radius: 28px;
  background: linear-gradient(130deg, #071528 0%, #0b2a55 62%, #0a3d6b 100%);
  color: #fff;
}

.cta::before {
  content: "";
  position: absolute;
  right: -80px;
  top: -110px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(0, 200, 180, 0.26),
    transparent 65%
  );
  pointer-events: none;
}

.cta::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(
      rgba(255, 255, 255, 0.045) 1px,
      transparent 1px
    ),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 62px 62px;
  mask-image: linear-gradient(90deg, transparent, #000 70%);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 70%);
  pointer-events: none;
}

.cta > div {
  position: relative;
  z-index: 1;
}

.cta h2 {
  font-size: clamp(24px, 3vw, 36px);
  color: #fff;
  margin-bottom: 12px;
}

.cta p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 15.5px;
  max-width: 520px;
}

.cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  flex: none;
}

/* ---------- 内页头部 ---------- */
.page-hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding: clamp(64px, 8vw, 96px) 0 clamp(56px, 6vw, 80px);
  background: var(--navy);
  color: #fff;
}

.page-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.page-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.page-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
      left,
      rgba(5, 14, 27, 0.97) 0%,
      rgba(5, 14, 27, 0.84) 55%,
      rgba(5, 14, 27, 0.6) 100%
    ),
    radial-gradient(circle at 85% 10%, rgba(11, 92, 255, 0.32), transparent 55%);
}

.page-hero h1 {
  font-size: clamp(30px, 4vw, 48px);
  color: #fff;
  letter-spacing: -0.02em;
  max-width: 780px;
}

.page-hero__lead {
  max-width: 640px;
  margin-top: 18px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.72);
}

.crumb {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 20px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.48);
}

.crumb a {
  transition: color 0.2s ease;
}

.crumb a:hover {
  color: #fff;
}

/* ---------- 页脚 ---------- */
.footer {
  margin-top: clamp(64px, 7vw, 96px);
  padding-top: 72px;
  background: #06101f;
  color: rgba(255, 255, 255, 0.62);
  font-size: 14px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.25fr;
  gap: 40px;
  padding-bottom: 52px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer .brand__text strong {
  color: #fff;
}

.footer .brand__text small {
  color: rgba(255, 255, 255, 0.42);
}

.footer__desc {
  max-width: 320px;
  margin-top: 18px;
  font-size: 13.5px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.5);
}

.footer h4 {
  margin-bottom: 18px;
  font-size: 14.5px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.02em;
}

.footer li + li {
  margin-top: 10px;
}

.footer a {
  transition: color 0.2s ease;
}

.footer a:hover {
  color: #fff;
}

.footer__contact li {
  display: flex;
  gap: 10px;
  line-height: 1.7;
  font-size: 13.5px;
}

.footer__contact svg {
  flex: none;
  width: 16px;
  height: 16px;
  margin-top: 5px;
  color: var(--mint);
}

.footer__contact strong {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  padding: 24px 0;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.36);
}

/* ---------- 关于我们 ---------- */
.timeline {
  position: relative;
  display: grid;
  gap: 0;
  margin-top: 8px;
}

.timeline li {
  position: relative;
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 28px;
  padding: 22px 0 22px 34px;
  border-left: 1px solid var(--line);
}

.timeline li:first-child {
  padding-top: 0;
}

.timeline li:last-child {
  padding-bottom: 0;
}

.timeline li::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 30px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--brand);
  box-shadow: 0 0 0 4px rgba(11, 92, 255, 0.1);
}

.timeline li:first-child::before {
  top: 6px;
}

.timeline__year {
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}

.timeline h3 {
  margin-bottom: 5px;
  font-size: 16px;
}

.timeline p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.value-card {
  padding: 28px 24px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
}

.value-card .num {
  display: block;
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--brand);
}

.value-card h3 {
  margin-bottom: 8px;
  font-size: 17px;
}

.value-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.78;
}

/* ---------- 设备卡片 ---------- */
.equip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.equip li {
  padding: 26px 24px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.equip li:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 44px -32px rgba(9, 30, 66, 0.42);
}

.equip .icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 16px;
  border-radius: 12px;
  background: var(--soft);
  color: var(--brand);
}

.equip .icon svg {
  width: 22px;
  height: 22px;
}

.equip h3 {
  margin-bottom: 6px;
  font-size: 16px;
}

.equip p {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

.equip .qty {
  display: inline-block;
  margin-top: 14px;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(0, 200, 180, 0.1);
  font-size: 12px;
  font-weight: 600;
  color: #0a8f80;
}

/* ---------- 品质流程 ---------- */
.qc-flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
  counter-reset: qc;
}

.qc-flow li {
  position: relative;
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  counter-increment: qc;
}

.qc-flow li::before {
  content: counter(qc);
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  margin-bottom: 14px;
  border-radius: 8px;
  background: var(--grad);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}

.qc-flow h3 {
  margin-bottom: 6px;
  font-size: 15px;
}

.qc-flow p {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

.cert-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.cert-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
}

.cert-list svg {
  width: 18px;
  height: 18px;
  color: var(--brand);
}

/* ---------- 联系页 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(32px, 4vw, 56px);
  align-items: start;
}

.info-card {
  display: flex;
  gap: 16px;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
}

.info-card + .info-card {
  margin-top: 14px;
}

.info-card .icon {
  display: grid;
  place-items: center;
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(
    140deg,
    rgba(11, 92, 255, 0.1),
    rgba(0, 200, 180, 0.14)
  );
  color: var(--brand);
}

.info-card .icon svg {
  width: 21px;
  height: 21px;
}

.info-card h3 {
  margin-bottom: 3px;
  font-size: 14px;
  color: var(--muted);
  font-weight: 500;
}

.info-card p,
.info-card a {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  line-height: 1.5;
}

.info-card small {
  display: block;
  margin-top: 3px;
  font-size: 12.5px;
  color: var(--muted);
  font-weight: 400;
}

.form-card {
  padding: clamp(26px, 3vw, 40px);
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 26px 60px -44px rgba(9, 30, 66, 0.5);
}

.form-card h2 {
  font-size: 22px;
  margin-bottom: 6px;
}

.form-card > p {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 26px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.field {
  margin-bottom: 16px;
}

.field label {
  display: block;
  margin-bottom: 7px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
}

.field label i {
  font-style: normal;
  color: #e5484d;
  margin-left: 2px;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fbfcfe;
  font-family: inherit;
  font-size: 14.5px;
  color: var(--ink);
  transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.field textarea {
  min-height: 118px;
  resize: vertical;
  line-height: 1.7;
}

.field input::placeholder,
.field textarea::placeholder {
  color: #a9b5c6;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: rgba(11, 92, 255, 0.55);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(11, 92, 255, 0.1);
}

.form-note {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-top: 14px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

.form-note svg {
  flex: none;
  width: 15px;
  height: 15px;
  margin-top: 3px;
  color: var(--mint);
}

.form-status {
  display: none;
  margin-top: 14px;
  padding: 12px 16px;
  border-radius: 10px;
  background: rgba(0, 200, 180, 0.1);
  font-size: 14px;
  color: #07756a;
}

.form-status.is-visible {
  display: block;
}

.map-band {
  position: relative;
  overflow: hidden;
  min-height: 300px;
  border-radius: 22px;
  background: linear-gradient(135deg, #071528, #0b2a55);
  color: #fff;
}

.map-band img {
  width: 100%;
  height: 100%;
  min-height: 300px;
  object-fit: cover;
  opacity: 0.34;
}

.map-band__content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 10px;
  padding: clamp(26px, 4vw, 52px);
  background: linear-gradient(
    90deg,
    rgba(5, 14, 27, 0.94),
    rgba(5, 14, 27, 0.45)
  );
}

.map-band h2 {
  font-size: clamp(22px, 2.6vw, 30px);
  color: #fff;
}

.map-band p {
  font-size: 14.5px;
  color: rgba(255, 255, 255, 0.7);
  max-width: 460px;
}

/* ---------- 条目列表（内页） ---------- */
.list-panel {
  padding: 30px 28px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
}

.list-panel h3 {
  margin-bottom: 14px;
  font-size: 18px;
}

.list-panel ul li {
  position: relative;
  padding: 9px 0 9px 20px;
  font-size: 14px;
  color: var(--text);
  border-bottom: 1px dashed var(--line);
}

.list-panel ul li:last-child {
  border-bottom: 0;
}

.list-panel ul li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 19px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint);
}

/* ---------- 滚动动画 ---------- */
html.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s cubic-bezier(0.22, 0.61, 0.36, 1),
    transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
  will-change: opacity, transform;
}

html.js .reveal.is-in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html.js .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .card:hover,
  .process li:hover,
  .equip li:hover,
  .industry li:hover,
  .btn:hover {
    transform: none;
  }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .nav__list {
    gap: 22px;
  }

  .header__phone {
    display: none;
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .qc-flow {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 960px) {
  .header__inner {
    height: 70px;
  }

  .header--over .header__inner {
    height: 70px;
  }

  .nav-toggle {
    display: flex;
  }

  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px 24px 26px;
    border-bottom: 1px solid var(--line);
    background: #fff;
    box-shadow: 0 28px 40px -30px rgba(9, 30, 66, 0.5);
  }

  .nav.is-open {
    display: flex;
  }

  .nav__list {
    flex-direction: column;
    gap: 0;
    width: 100%;
  }

  .nav__list a {
    display: block;
    padding: 14px 0;
    font-size: 15.5px;
    color: var(--ink) !important;
    border-bottom: 1px solid var(--line);
  }

  .nav__list a::after {
    display: none;
  }

  .nav__cta {
    margin-top: 18px;
  }

  .nav__cta .btn {
    width: 100%;
  }

  .hero {
    padding: 128px 0 112px;
  }

  .hero__inner {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .hero-card {
    max-width: 460px;
  }

  .stats-wrap {
    margin-top: -56px;
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px 0;
    padding: 26px 8px;
  }

  .stat:nth-child(2) {
    border-right: 0;
  }

  .split {
    grid-template-columns: 1fr;
  }

  .split--reverse .split__media {
    order: -1;
  }

  .split__media::before {
    display: none;
  }

  .process,
  .industry,
  .equip {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .cta {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .container {
    padding-inline: 20px;
  }

  .grid-4,
  .grid-3,
  .grid-2,
  .process,
  .industry,
  .equip,
  .qc-flow {
    grid-template-columns: 1fr;
  }

  .stats {
    grid-template-columns: 1fr 1fr;
  }

  .stat {
    padding: 4px 10px;
  }

  .stat:nth-child(3) {
    border-right: 1px solid var(--line);
  }

  .stat:nth-child(4) {
    border-right: 0;
  }

  .stat p {
    font-size: 12.5px;
  }

  .timeline li {
    grid-template-columns: 1fr;
    gap: 4px;
    padding-left: 26px;
  }

  .timeline__year {
    font-size: 18px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer {
    padding-top: 56px;
  }

  .footer__grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 118px 0 104px;
  }

  .hero__meta {
    gap: 10px 20px;
  }

  .badge-corner {
    left: 10px;
    bottom: 14px;
    padding: 10px 14px;
  }
}