/* ============================================================
   镭刻拾光 · 静态站点公共样式（复刻万网小智参考站）
   墨黑 #121010 / 暖米 #F7F4EF / 金色渐变 #F5C46B→#D97E32
   ============================================================ */
:root {
  --ink: #1c1917;
  --ink-deep: #121010;
  --ink-card: #1b1816;
  --black: #0a0a0a;
  --cream: #f5f1e8;
  --beige: #f7f4ef;
  --beige-card: #ffffff;
  --coffee: #211d18;
  --muted: #a8a094;
  --muted-dark: #6b6259;
  --gold: #e9a23b;
  --gold-1: #f5c46b;
  --gold-2: #d97e32;
  --line: rgba(245, 241, 232, 0.1);
  --line-dark: rgba(33, 29, 24, 0.1);
  --radius: 16px;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  --shadow-soft: 0 12px 40px rgba(33, 29, 24, 0.08);
  --grad-gold: linear-gradient(135deg, var(--gold-1) 0%, var(--gold-2) 100%);
  --font: "Alibaba PuHuiTi 3.0", "PingFang SC", "HarmonyOS Sans SC",
    "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--ink-deep);
  color: var(--cream);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
.container { width: min(1160px, 92%); margin: 0 auto; }

/* ---------------- 顶部导航 ---------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(18, 16, 16, 0.65);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, border-color 0.3s ease;
}
.site-header.scrolled {
  background: rgba(18, 16, 16, 0.95);
  border-bottom-color: var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 21px; font-weight: 700; letter-spacing: 2px; color: var(--cream);
}
.logo .dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--grad-gold);
  box-shadow: 0 0 12px rgba(233, 162, 59, 0.8);
}
.nav-links { display: flex; align-items: center; gap: 36px; }
.nav-links > li { position: relative; }
.nav-links a.nav-item {
  font-size: 15px; color: rgba(245, 241, 232, 0.78);
  padding: 8px 2px; display: inline-flex; align-items: center; gap: 6px;
  transition: color 0.25s ease;
}
.nav-links a.nav-item:hover,
.nav-links a.nav-item.active { color: var(--gold-1); }
.nav-links a.nav-item .caret { font-size: 10px; transition: transform 0.25s ease; }
.has-dropdown:hover .caret { transform: rotate(180deg); }

/* 帮助文档下拉 */
.dropdown {
  position: absolute; top: calc(100% + 10px); left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 200px; background: rgba(24, 21, 19, 0.98);
  border: 1px solid var(--line); border-radius: 12px; padding: 8px;
  opacity: 0; visibility: hidden; transition: all 0.25s ease;
  box-shadow: var(--shadow);
}
.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown {
  opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0);
}
.dropdown a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; border-radius: 8px; font-size: 14px;
  color: rgba(245, 241, 232, 0.82);
  transition: background 0.2s ease, color 0.2s ease;
}
.dropdown a:hover { background: rgba(233, 162, 59, 0.12); color: var(--gold-1); }
.dropdown a .tag { font-size: 12px; color: var(--muted); margin-left: auto; }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 30px; border-radius: 10px;
  font-size: 15px; font-weight: 600; cursor: pointer;
  border: 1px solid transparent; font-family: var(--font);
  transition: all 0.25s ease;
}
.btn-gold {
  background: var(--grad-gold); color: #241a08;
  box-shadow: 0 8px 24px rgba(217, 126, 50, 0.35);
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 14px 32px rgba(217, 126, 50, 0.45); }
.btn-outline { border-color: rgba(245, 241, 232, 0.4); color: var(--cream); background: transparent; }
.btn-outline:hover { border-color: var(--gold-1); color: var(--gold-1); transform: translateY(-2px); }
.btn-outline-dark { border-color: rgba(33, 29, 24, 0.35); color: var(--coffee); background: transparent; }
.btn-outline-dark:hover { border-color: var(--gold-2); color: var(--gold-2); transform: translateY(-2px); }
.nav .btn { padding: 10px 24px; border-radius: 10px; }

/* 移动端汉堡 */
.hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: 0; cursor: pointer; padding: 6px;
}
.hamburger span { width: 24px; height: 2px; background: var(--cream); transition: all 0.3s ease; }

/* ---------------- 页面 Hero ---------------- */
.page-hero {
  padding: 200px 0 120px;
  text-align: center;
  background:
    radial-gradient(ellipse 62% 55% at 50% -12%, rgba(233, 162, 59, 0.16), transparent 70%),
    var(--ink-deep);
  border-radius: 0 0 36px 36px;
  position: relative;
  overflow: hidden;
}
.eyebrow {
  display: inline-block; font-size: 14px; font-weight: 700;
  letter-spacing: 8px; text-transform: uppercase;
  color: var(--gold-1); margin-bottom: 20px;
}
.page-hero h1 {
  font-size: clamp(44px, 7vw, 76px);
  font-weight: 800; letter-spacing: 6px; color: var(--cream);
}
.page-hero .sub {
  margin-top: 24px; font-size: 19px; color: var(--muted); letter-spacing: 2px;
}
.hero-actions { margin-top: 48px; display: flex; gap: 18px; justify-content: center; flex-wrap: wrap; }

/* ---------------- 通用 section ---------------- */
.section { padding: 100px 0; }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 64px; }
.section-head .eyebrow { letter-spacing: 5px; margin-bottom: 14px; }
.section-head h2 {
  font-size: clamp(30px, 4vw, 44px); font-weight: 800;
  letter-spacing: 3px; color: var(--cream); margin-top: 6px;
}
.section-head p { margin-top: 16px; color: var(--muted); font-size: 17px; }
.section-light { background: var(--beige); color: var(--coffee); }
.section-light .section-head h2 { color: var(--coffee); }
.section-light .section-head p { color: var(--muted-dark); }

/* ---------------- 01 软件操作指南：步骤卡片 ---------------- */
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.guide-card {
  background: var(--beige-card); border-radius: var(--radius);
  padding: 36px 32px; box-shadow: var(--shadow-soft);
  border: 1px solid var(--line-dark);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.guide-card:hover { transform: translateY(-6px); box-shadow: 0 24px 48px rgba(33, 29, 24, 0.14); }
.guide-card h3 { font-size: 22px; font-weight: 700; color: var(--coffee); letter-spacing: 1px; }
.guide-card .desc { margin: 10px 0 24px; color: var(--muted-dark); font-size: 14.5px; }
.step-list { display: grid; gap: 14px; counter-reset: step; }
.step-list li {
  display: flex; align-items: flex-start; gap: 12px;
  font-size: 14.5px; color: #4a443c; counter-increment: step;
}
.step-list li::before {
  content: counter(step);
  flex: 0 0 auto; width: 24px; height: 24px; border-radius: 50%;
  background: var(--grad-gold); color: #241a08;
  font-size: 13px; font-weight: 700;
  display: inline-flex; align-items: center; justify-content: center;
  margin-top: 2px;
}
.guide-footer { text-align: center; margin-top: 56px; }

/* ---------------- 02 硬件参数规格：参数表 ---------------- */
.spec-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.spec-card {
  background: var(--ink-card); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden;
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.spec-card:hover { border-color: rgba(233, 162, 59, 0.45); transform: translateY(-4px); }
.spec-card h3 {
  padding: 20px 28px; font-size: 18px; letter-spacing: 2px;
  color: var(--gold-1); border-bottom: 1px solid var(--line);
  background: rgba(233, 162, 59, 0.06);
}
.spec-table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.spec-table tr { border-bottom: 1px solid rgba(245, 241, 232, 0.06); }
.spec-table tr:last-child { border-bottom: 0; }
.spec-table th {
  width: 108px; text-align: left; padding: 14px 20px 14px 28px;
  color: var(--muted); font-weight: 500; vertical-align: top; white-space: nowrap;
}
.spec-table td { padding: 14px 28px 14px 0; color: rgba(245, 241, 232, 0.9); }
.spec-note { margin-top: 36px; text-align: center; color: var(--muted-dark); font-size: 14px; }

/* ---------------- 03 FAQ ---------------- */
.faq-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.faq-group h3 {
  font-size: 18px; font-weight: 700; letter-spacing: 2px;
  color: var(--coffee); margin-bottom: 20px;
  display: flex; align-items: center; gap: 10px;
}
.faq-group h3::before {
  content: ""; width: 8px; height: 8px; border-radius: 50%;
  background: var(--grad-gold); display: inline-block;
}
.faq-item {
  background: var(--beige-card); border: 1px solid var(--line-dark);
  border-radius: 12px; padding: 20px 22px; margin-bottom: 14px;
  box-shadow: var(--shadow-soft);
}
.faq-item h4 { font-size: 15px; font-weight: 700; color: var(--coffee); margin-bottom: 8px; }
.faq-item p { font-size: 14px; color: var(--muted-dark); }

/* ---------------- 帮助文档入口 ---------------- */
.docs-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; max-width: 860px; margin: 0 auto; }
.doc-card {
  display: flex; flex-direction: column; gap: 6px;
  background: var(--ink-card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 36px 32px;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.doc-card:hover {
  transform: translateY(-6px); border-color: rgba(233, 162, 59, 0.5);
  box-shadow: 0 24px 60px rgba(217, 126, 50, 0.15);
}
.doc-card .icon {
  width: 52px; height: 52px; border-radius: 14px;
  background: rgba(233, 162, 59, 0.12); color: var(--gold-1);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; margin-bottom: 16px;
}
.doc-card h3 { font-size: 21px; color: var(--cream); letter-spacing: 1px; }
.doc-card .en { font-size: 13px; color: var(--muted); letter-spacing: 1px; }
.doc-card p { margin: 12px 0 20px; color: var(--muted); font-size: 14.5px; flex: 1; }
.doc-card .go {
  align-self: flex-start; font-size: 14px; font-weight: 600; color: var(--gold-1);
  display: inline-flex; align-items: center; gap: 8px;
}
.doc-card:hover .go { gap: 12px; }

/* ---------------- 服务卡片（services 页） ---------------- */
.service-card {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0;
  background: var(--beige-card); border-radius: var(--radius);
  overflow: hidden; margin-bottom: 56px;
  box-shadow: var(--shadow-soft); border: 1px solid var(--line-dark);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.service-card:hover { transform: translateY(-6px); box-shadow: 0 28px 56px rgba(33, 29, 24, 0.14); }
.service-card:nth-child(even) .service-media { order: 2; }
.service-media { overflow: hidden; min-height: 320px; }
.service-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.service-card:hover .service-media img { transform: scale(1.06); }
.service-body { padding: 52px 56px; display: flex; flex-direction: column; justify-content: center; }
.service-body h2 { font-size: 27px; font-weight: 700; color: var(--coffee); margin-bottom: 12px; letter-spacing: 1px; }
.service-body .desc { color: var(--muted-dark); margin-bottom: 22px; }
.feature-list { display: grid; gap: 12px; margin-bottom: 30px; }
.feature-list li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 15px; color: #4a443c;
}
.feature-list li::before {
  content: "✓"; flex: 0 0 auto; width: 20px; height: 20px; border-radius: 50%;
  background: rgba(233, 162, 59, 0.18); color: var(--gold-2);
  font-size: 12px; display: inline-flex; align-items: center; justify-content: center;
  margin-top: 4px;
}
.service-body .btn { align-self: flex-start; }

/* ---------------- 关于页 ---------------- */
.about-lead { max-width: 820px; margin: 0 auto; display: grid; gap: 22px; }
.about-lead p { color: var(--muted); font-size: 16.5px; text-align: justify; }
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.adv-card {
  background: var(--ink-card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 32px 26px;
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.adv-card:hover { transform: translateY(-6px); border-color: rgba(233, 162, 59, 0.45); }
.adv-card .icon {
  width: 48px; height: 48px; border-radius: 12px; margin-bottom: 18px;
  background: rgba(233, 162, 59, 0.12); color: var(--gold-1);
  display: flex; align-items: center; justify-content: center; font-size: 22px;
}
.adv-card h3 { font-size: 18px; color: var(--cream); margin-bottom: 10px; letter-spacing: 1px; }
.adv-card p { font-size: 14px; color: var(--muted); }

/* ---------------- 联系页 ---------------- */
.contact-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: start; }
.contact-form {
  background: var(--beige-card); border-radius: var(--radius);
  padding: 40px 36px; box-shadow: var(--shadow-soft); border: 1px solid var(--line-dark);
}
.form-field { margin-bottom: 20px; }
.form-field label { display: block; font-size: 14px; font-weight: 600; color: var(--coffee); margin-bottom: 8px; }
.form-field label em { color: #c0392b; font-style: normal; margin-left: 2px; }
.form-field input, .form-field textarea {
  width: 100%; padding: 13px 16px; border-radius: 10px;
  border: 1px solid rgba(33, 29, 24, 0.18); background: #fbfaf7;
  font-size: 14.5px; font-family: var(--font); color: var(--coffee);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.form-field input:focus, .form-field textarea:focus {
  outline: none; border-color: var(--gold-2);
  box-shadow: 0 0 0 3px rgba(233, 162, 59, 0.18);
}
.form-field textarea { min-height: 130px; resize: vertical; }
.form-success {
  display: none; margin-top: 16px; padding: 12px 16px; border-radius: 10px;
  background: rgba(94, 212, 173, 0.15); color: #1e7a5a; font-size: 14px;
}
.form-success.show { display: block; }
.contact-info h3, .flow-title { font-size: 20px; color: var(--cream); letter-spacing: 2px; margin-bottom: 24px; }
.info-list { display: grid; gap: 18px; margin-bottom: 44px; }
.info-list .row { display: flex; gap: 14px; align-items: flex-start; }
.info-list .row .icon {
  width: 42px; height: 42px; border-radius: 12px; flex: 0 0 auto;
  background: rgba(233, 162, 59, 0.12); color: var(--gold-1);
  display: flex; align-items: center; justify-content: center; font-size: 18px;
}
.info-list .row h4 { font-size: 15px; color: var(--cream); margin-bottom: 2px; }
.info-list .row p { font-size: 14.5px; color: var(--muted); }
.flow-list { display: grid; gap: 0; }
.flow-list li { display: flex; gap: 18px; position: relative; padding-bottom: 26px; }
.flow-list li::before {
  content: ""; position: absolute; left: 17px; top: 36px; bottom: 0;
  width: 1px; background: var(--line);
}
.flow-list li:last-child::before { display: none; }
.flow-list .num {
  flex: 0 0 auto; width: 36px; height: 36px; border-radius: 50%;
  background: var(--grad-gold); color: #241a08; font-weight: 700; font-size: 14px;
  display: flex; align-items: center; justify-content: center;
}
.flow-list h4 { font-size: 15.5px; color: var(--cream); margin-bottom: 2px; }
.flow-list p { font-size: 13.5px; color: var(--muted); }

/* ---------------- 作品页 ---------------- */
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.gallery-item {
  border-radius: var(--radius); overflow: hidden; position: relative;
  border: 1px solid var(--line); background: var(--ink-card);
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.gallery-item:hover { transform: translateY(-6px); border-color: rgba(233, 162, 59, 0.45); }
.gallery-item img { width: 100%; height: 260px; object-fit: cover; transition: transform 0.6s ease; }
.gallery-item:hover img { transform: scale(1.07); }
.gallery-item figcaption {
  padding: 16px 18px; font-size: 14.5px; color: rgba(245, 241, 232, 0.85);
}

/* ---------------- CTA ---------------- */
.cta-section {
  padding: 110px 0; text-align: center;
  background:
    radial-gradient(ellipse 55% 70% at 50% 115%, rgba(233, 162, 59, 0.18), transparent 70%),
    var(--ink);
}
.cta-section h2 { font-size: clamp(32px, 4.5vw, 48px); font-weight: 800; letter-spacing: 2px; color: var(--cream); }
.cta-section p { margin: 18px 0 36px; color: var(--muted); font-size: 17px; }

/* ---------------- 页脚 ---------------- */
.site-footer {
  background: var(--black); border-top: 1px solid var(--line);
  padding: 80px 0 0; color: var(--muted); font-size: 14px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1.2fr 1.2fr; gap: 48px; padding-bottom: 60px; }
.footer-brand .logo { margin-bottom: 18px; }
.footer-brand p { color: var(--muted-dark); max-width: 300px; }
.footer-col h4 { color: var(--cream); font-size: 16px; letter-spacing: 2px; margin-bottom: 20px; }
.footer-col ul { display: grid; gap: 12px; }
.footer-col a { color: var(--muted); transition: color 0.2s ease; }
.footer-col a:hover { color: var(--gold-1); }
.footer-col li { color: var(--muted); }
.footer-col .doc-links { display: flex; gap: 10px; align-items: center; }
.footer-bottom {
  border-top: 1px solid var(--line); padding: 24px 0;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap; color: var(--muted-dark);
}
.footer-bottom .legal { display: flex; gap: 24px; }
.footer-bottom .legal a:hover { color: var(--gold-1); }

/* ---------------- 动画与页内锚点 ---------------- */
.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s ease, transform 0.7s ease; }
.js .reveal.visible { opacity: 1; transform: none; }
[id] { scroll-margin-top: 90px; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1024px) {
  .guide-grid { grid-template-columns: 1fr; }
  .faq-grid { grid-template-columns: 1fr; }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .hamburger { display: flex; }
  .nav-links {
    position: fixed; top: 72px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: rgba(18, 16, 16, 0.98); border-bottom: 1px solid var(--line);
    padding: 12px 6vw 24px;
    transform: translateY(-12px); opacity: 0; visibility: hidden;
    transition: all 0.3s ease;
  }
  .nav-links.open { transform: none; opacity: 1; visibility: visible; }
  .nav-links > li { padding: 6px 0; }
  .dropdown {
    position: static; transform: none; opacity: 1; visibility: visible;
    display: none; box-shadow: none; border: 0; background: transparent;
    padding: 0 0 0 16px;
  }
  .has-dropdown:hover .dropdown, .has-dropdown.open .dropdown { display: block; }
  .nav .btn { display: none; }
  .spec-grid, .docs-grid, .contact-grid { grid-template-columns: 1fr; }
  .service-card { grid-template-columns: 1fr; }
  .service-card:nth-child(even) .service-media { order: 0; }
  .service-body { padding: 36px 28px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}
@media (max-width: 560px) {
  .footer-grid, .adv-grid, .gallery-grid { grid-template-columns: 1fr; }
  .page-hero { padding: 150px 0 90px; border-radius: 0 0 24px 24px; }
  .section { padding: 72px 0; }
}