/* 美甄科技官网 — PC 专版 */
:root {
  --brand-green: #00e676;
  --brand-green-dim: #00c853;
  --brand-green-glow: rgba(0, 230, 118, 0.45);
  --brand-black: #050805;
  --bg-deep: #030504;
  --bg-panel: rgba(8, 18, 12, 0.72);
  --bg-card: rgba(12, 28, 18, 0.55);
  --line: rgba(0, 230, 118, 0.22);
  --text: #e8f5e9;
  --text-muted: #8fa896;
  --text-dim: #5c7364;
  --radius: 4px;
  --font-display: "Orbitron", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", "Segoe UI", sans-serif;
  --max: 1280px;
  --header-h: 72px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-width: 1280px;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg-deep);
  overflow-x: auto;
}

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

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

ul {
  list-style: none;
}

/* —— 粒子层 —— */
#particles-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0, 230, 118, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 230, 118, 0.03) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 20%, #000 20%, transparent 75%);
}

.site-wrap {
  position: relative;
  z-index: 1;
}

.container {
  width: var(--max);
  max-width: calc(100% - 80px);
  margin: 0 auto;
}

/* —— 顶栏 —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  border-bottom: 1px solid var(--line);
  background: rgba(3, 5, 4, 0.82);
  backdrop-filter: blur(16px);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-mark {
  width: 40px;
  height: 40px;
  object-fit: contain;
  filter: drop-shadow(0 0 8px var(--brand-green-glow));
}

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

.brand-name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text);
}

.brand-en {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--brand-green);
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav a {
  padding: 8px 14px;
  font-size: 14px;
  color: var(--text-muted);
  border-radius: var(--radius);
  transition: color 0.2s, background 0.2s, box-shadow 0.2s;
}

.nav a:hover,
.nav a.is-active {
  color: var(--brand-green);
  background: rgba(0, 230, 118, 0.08);
  box-shadow: inset 0 -1px 0 var(--brand-green);
}

.header-cta {
  flex-shrink: 0;
}

/* —— 按钮 —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s, border-color 0.2s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  color: #031208;
  background: linear-gradient(135deg, #00ff88, #00c853);
  box-shadow: 0 0 24px var(--brand-green-glow);
}

.btn-primary:hover {
  box-shadow: 0 0 36px rgba(0, 230, 118, 0.65);
}

.btn-ghost {
  color: var(--brand-green);
  background: transparent;
  border-color: rgba(0, 230, 118, 0.45);
}

.btn-ghost:hover {
  background: rgba(0, 230, 118, 0.1);
  border-color: var(--brand-green);
  box-shadow: 0 0 20px rgba(0, 230, 118, 0.25);
}

/* —— Hero —— */
.hero {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
  padding: 80px 0 100px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background: #030504 url("../img/hero-bg.jpg") center / cover no-repeat;
}

.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: saturate(1.15) contrast(1.05);
}

.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    105deg,
    rgba(3, 5, 4, 0.88) 0%,
    rgba(3, 5, 4, 0.42) 48%,
    rgba(3, 5, 4, 0.78) 100%
  );
  pointer-events: none;
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background: radial-gradient(ellipse 50% 40% at 70% 40%, rgba(0, 230, 118, 0.2), transparent 70%);
  pointer-events: none;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
  font-size: 13px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--brand-green);
}

.hero-eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--brand-green);
  box-shadow: 0 0 8px var(--brand-green);
}

.hero-title {
  font-family: var(--font-display);
  font-size: 64px;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
  text-shadow: 0 0 40px rgba(0, 230, 118, 0.35);
}

.hero-title span {
  color: var(--brand-green);
}

.hero-tagline {
  max-width: 620px;
  font-size: 20px;
  color: var(--text-muted);
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 56px;
}

.hero-meta {
  display: flex;
  gap: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
  max-width: 720px;
}

.hero-meta dt {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  margin-bottom: 4px;
}

.hero-meta dd {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--text);
}

/* —— 通用区块 —— */
.section {
  padding: 100px 0;
  position: relative;
}

.section-head {
  margin-bottom: 56px;
}

.section-label {
  display: inline-block;
  margin-bottom: 14px;
  font-size: 12px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--brand-green);
}

.section-title {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 16px;
}

.section-desc {
  max-width: 640px;
  color: var(--text-muted);
  font-size: 16px;
}

.section-dark {
  background: linear-gradient(180deg, transparent, rgba(0, 40, 20, 0.25), transparent);
}

/* —— 业务卡片 —— */
.biz-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.biz-card {
  position: relative;
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: 220px;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg-card);
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}

.biz-card:hover {
  border-color: rgba(0, 230, 118, 0.55);
  box-shadow: 0 0 40px rgba(0, 230, 118, 0.15);
  transform: translateY(-3px);
}

.biz-card-media {
  position: relative;
  overflow: hidden;
}

.biz-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}

.biz-card:hover .biz-card-media img {
  transform: scale(1.06);
}

.biz-card-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 40%, rgba(8, 18, 12, 0.85));
}

.biz-card-body {
  padding: 28px 28px 28px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.biz-card-num {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--brand-green);
  margin-bottom: 10px;
}

.biz-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 10px;
}

.biz-card p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.biz-link {
  font-size: 13px;
  color: var(--brand-green);
  letter-spacing: 0.06em;
}

.biz-link::after {
  content: " →";
}

/* —— 服务流程 —— */
.flow {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  position: relative;
}

.flow::before {
  content: "";
  position: absolute;
  top: 36px;
  left: 4%;
  right: 4%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--brand-green), transparent);
  opacity: 0.35;
  z-index: 0;
}

.flow-item {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 20px 12px 28px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.flow-dot {
  width: 14px;
  height: 14px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: var(--brand-green);
  box-shadow: 0 0 16px var(--brand-green-glow);
}

.flow-item h4 {
  font-size: 15px;
  margin-bottom: 8px;
}

.flow-item p {
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.5;
}

/* —— 理念条 —— */
.promise {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 48px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(0, 230, 118, 0.08), transparent 50%),
    var(--bg-panel);
  box-shadow: inset 0 0 60px rgba(0, 230, 118, 0.05);
}

.promise-quote {
  font-size: 24px;
  font-weight: 500;
  line-height: 1.55;
  letter-spacing: 0.02em;
}

.promise-quote em {
  font-style: normal;
  color: var(--brand-green);
}

.promise-side {
  display: grid;
  gap: 16px;
}

.promise-stat {
  padding: 16px 20px;
  border-left: 2px solid var(--brand-green);
  background: rgba(0, 0, 0, 0.25);
}

.promise-stat strong {
  display: block;
  font-family: var(--font-display);
  font-size: 28px;
  color: var(--brand-green);
  margin-bottom: 4px;
}

.promise-stat span {
  font-size: 13px;
  color: var(--text-muted);
}

/* —— CTA 条 —— */
.cta-band {
  padding: 72px 0;
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  padding: 48px 56px;
  border: 1px solid rgba(0, 230, 118, 0.4);
  border-radius: 8px;
  background:
    radial-gradient(ellipse at right, rgba(0, 230, 118, 0.2), transparent 55%),
    rgba(6, 16, 10, 0.9);
  box-shadow: 0 0 50px rgba(0, 230, 118, 0.12);
}

.cta-inner h2 {
  font-family: var(--font-display);
  font-size: 28px;
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}

.cta-inner p {
  color: var(--text-muted);
  max-width: 520px;
}

/* —— 页脚 —— */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 56px 0 32px;
  background: rgba(0, 0, 0, 0.45);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .brand {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  max-width: 320px;
}

.footer-col h4 {
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brand-green);
  margin-bottom: 16px;
}

.footer-col a,
.footer-col li {
  display: block;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.footer-col a:hover {
  color: var(--brand-green);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-dim);
}

/* —— 内页 Hero —— */
.page-hero {
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(ellipse 60% 80% at 80% 0%, rgba(0, 230, 118, 0.12), transparent 60%),
    linear-gradient(180deg, rgba(0, 30, 15, 0.4), transparent);
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: 42px;
  letter-spacing: 0.05em;
  margin-bottom: 14px;
}

.page-hero p {
  max-width: 640px;
  color: var(--text-muted);
  font-size: 17px;
}

.breadcrumb {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 13px;
  color: var(--text-dim);
}

.breadcrumb a:hover {
  color: var(--brand-green);
}

/* —— 内容布局 —— */
.content-block {
  padding: 72px 0;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.split-media {
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 0 40px rgba(0, 230, 118, 0.1);
}

.split-media img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

.split-body h2 {
  font-family: var(--font-display);
  font-size: 28px;
  margin-bottom: 16px;
  letter-spacing: 0.03em;
}

.split-body p {
  color: var(--text-muted);
  margin-bottom: 14px;
}

.feature-list {
  margin-top: 20px;
}

.feature-list li {
  position: relative;
  padding: 10px 0 10px 28px;
  border-bottom: 1px solid rgba(0, 230, 118, 0.1);
  color: var(--text);
  font-size: 15px;
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand-green);
  box-shadow: 0 0 10px var(--brand-green-glow);
}

/* —— 关于 / 联系 —— */
.info-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.info-card {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--bg-card);
}

.info-card h3 {
  font-size: 16px;
  margin-bottom: 10px;
  color: var(--brand-green);
}

.info-card p {
  font-size: 14px;
  color: var(--text-muted);
}

.contact-panel {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 40px;
}

.contact-form {
  padding: 36px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-panel);
}

.form-row {
  margin-bottom: 18px;
}

.form-row label {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  color: var(--text-muted);
}

.form-row input,
.form-row textarea {
  width: 100%;
  padding: 12px 14px;
  font-family: inherit;
  font-size: 14px;
  color: var(--text);
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-row input:focus,
.form-row textarea:focus {
  border-color: var(--brand-green);
  box-shadow: 0 0 0 3px rgba(0, 230, 118, 0.15);
}

.form-row textarea {
  min-height: 120px;
  resize: vertical;
}

/* —— 自定义下拉 —— */
.mz-select {
  position: relative;
}

.mz-select-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  font-family: inherit;
  font-size: 14px;
  color: var(--text);
  text-align: left;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.mz-select-trigger:hover {
  border-color: rgba(0, 230, 118, 0.45);
}

.mz-select.is-open .mz-select-trigger,
.mz-select-trigger:focus {
  border-color: var(--brand-green);
  box-shadow: 0 0 0 3px rgba(0, 230, 118, 0.15), 0 0 18px rgba(0, 230, 118, 0.12);
  background: rgba(0, 20, 10, 0.55);
}

.mz-select-value {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mz-select-chevron {
  width: 10px;
  height: 10px;
  flex-shrink: 0;
  border-right: 1.5px solid var(--brand-green);
  border-bottom: 1.5px solid var(--brand-green);
  transform: rotate(45deg) translateY(-2px);
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 0 6px rgba(0, 230, 118, 0.35);
}

.mz-select.is-open .mz-select-chevron {
  transform: rotate(225deg) translateY(-2px);
}

.mz-select-menu {
  position: absolute;
  left: 0;
  right: 0;
  top: calc(100% + 6px);
  z-index: 40;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: linear-gradient(180deg, rgba(6, 22, 14, 0.98), rgba(3, 10, 6, 0.98));
  border: 1px solid rgba(0, 230, 118, 0.4);
  border-radius: 6px;
  box-shadow:
    0 12px 40px rgba(0, 0, 0, 0.55),
    0 0 28px rgba(0, 230, 118, 0.12),
    inset 0 1px 0 rgba(0, 230, 118, 0.12);
  backdrop-filter: blur(12px);
  overflow: hidden;
}

.mz-select-menu[hidden] {
  display: none;
}

.mz-select-menu li {
  position: relative;
  padding: 11px 14px 11px 28px;
  font-size: 14px;
  color: var(--text-muted);
  border-radius: 4px;
  cursor: pointer;
  transition: color 0.15s, background 0.15s, box-shadow 0.15s;
}

.mz-select-menu li::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 50%;
  width: 6px;
  height: 6px;
  margin-top: -3px;
  border-radius: 50%;
  background: transparent;
  box-shadow: none;
  transition: background 0.15s, box-shadow 0.15s;
}

.mz-select-menu li:hover,
.mz-select-menu li.is-active {
  color: var(--text);
  background: rgba(0, 230, 118, 0.1);
}

.mz-select-menu li[aria-selected="true"] {
  color: var(--brand-green);
  background: rgba(0, 230, 118, 0.14);
  box-shadow: inset 0 0 0 1px rgba(0, 230, 118, 0.25);
}

.mz-select-menu li[aria-selected="true"]::before,
.mz-select-menu li:hover::before,
.mz-select-menu li.is-active::before {
  background: var(--brand-green);
  box-shadow: 0 0 8px var(--brand-green-glow);
}

.contact-aside h2 {
  font-family: var(--font-display);
  font-size: 26px;
  margin-bottom: 16px;
}

.contact-aside p {
  color: var(--text-muted);
  margin-bottom: 28px;
}

.contact-lines li {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}

.contact-lines strong {
  display: block;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--brand-green);
  margin-bottom: 4px;
}

.form-note {
  margin-top: 12px;
  font-size: 12px;
  color: var(--text-dim);
}

/* —— 入场动画 —— */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* —— 手机提示（PC 站遇窄屏时） —— */
.pc-only-hint {
  display: none;
}