/* =========================================================
   闫宝龙地图标注 - 全局样式
   设计语言：米白宣纸 / 墨黑 / 朱砂红 / 古铜金
   字体：思源宋体 SC 标题 + 思源黑体 SC 正文
   ========================================================= */

/* ============== 设计令牌 ============== */
:root {
  --bg: #f7f5f0;             /* 宣纸米白 */
  --bg-warm: #faf8f3;        /* 暖白 */
  --bg-deep: #0a0a0a;        /* 墨黑 */
  --bg-navy: #1a1a2e;        /* 深海军蓝 */
  --ink: #0a0a0a;            /* 主文字 */
  --ink-soft: #2a2a2a;       /* 次文字 */
  --ink-mute: #6b6b6b;       /* 弱化文字 */
  --ink-faint: #a8a39a;      /* 极弱文字 */
  --line: #1a1a1a;           /* 主线条 */
  --line-soft: #d8d3c8;      /* 软线条 */
  --line-faint: #ebe7dc;     /* 极软线条 */
  --red: #c1121f;            /* 朱砂红 */
  --red-deep: #8a0a14;       /* 深朱砂 */
  --gold: #b8893f;           /* 古铜金 */
  --gold-soft: #d4a373;      /* 浅古铜 */
  --white: #ffffff;

  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", serif;
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "DM Mono", "JetBrains Mono", "SF Mono", monospace;

  --container: 1280px;
  --gutter: 32px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ============== 重置 ============== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.3s var(--ease); }
a:hover { color: var(--red); }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }
ol, ul { list-style: none; padding: 0; margin: 0; }
h1, h2, h3, h4, h5, h6, p { margin: 0; }

/* ============== 通用工具 ============== */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.section { padding: 120px 0; position: relative; }
.section-head { margin-bottom: 80px; max-width: 760px; }
.section-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--ink-mute);
  padding: 6px 0;
  border-bottom: 1px solid var(--line);
  margin-bottom: 24px;
}
.section-num.transparent { color: rgba(255,255,255,0.6); border-color: rgba(255,255,255,0.3); }
.section-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}
.section-title em {
  font-style: normal;
  color: var(--red);
  position: relative;
  display: inline-block;
}
.section-title em::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  bottom: 0.05em;
  height: 0.18em;
  background: var(--red);
  opacity: 0.12;
  z-index: -1;
}
.section-title.light { color: var(--white); }
.section-title.light em { color: var(--red); }
.section-desc {
  font-size: 16px;
  color: var(--ink-mute);
  max-width: 540px;
}
.section-desc.light { color: rgba(255,255,255,0.7); }

em { font-style: normal; }

/* ============== 按钮 ============== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 32px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.05em;
  border: 1px solid var(--line);
  background: var(--ink);
  color: var(--white);
  transition: all 0.4s var(--ease);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--red);
  transform: translateY(101%);
  transition: transform 0.5s var(--ease);
  z-index: 0;
}
.btn > * { position: relative; z-index: 1; }
.btn:hover { color: var(--white); border-color: var(--red); }
.btn:hover::before { transform: translateY(0); }
.btn-primary { background: var(--ink); color: var(--white); }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { color: var(--ink); }
.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.3);
}
.btn-outline::before { background: var(--red); }
.btn-block { display: flex; width: 100%; justify-content: center; }

/* ============================================================
   HERO + 导航
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  background: var(--bg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  isolation: isolate;
}

/* 地图网格背景 */
.map-grid {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.grid-line {
  position: absolute;
  background: var(--line);
  opacity: 0.06;
}
.grid-line-h { left: 0; right: 0; height: 1px; }
.grid-line-h:nth-child(1) { top: 20%; }
.grid-line-h:nth-child(2) { top: 40%; }
.grid-line-h:nth-child(3) { top: 60%; }
.grid-line-h:nth-child(4) { top: 80%; }
.grid-line-v { top: 0; bottom: 0; width: 1px; }
.grid-line-v:nth-child(5) { left: 20%; }
.grid-line-v:nth-child(6) { left: 40%; }
.grid-line-v:nth-child(7) { left: 60%; }
.grid-line-v:nth-child(8) { left: 80%; }

/* 浮动坐标 */
.map-pin {
  position: absolute;
  left: var(--x);
  top: var(--y);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-mute);
  letter-spacing: 0.05em;
  opacity: 0;
  animation: pinFade 8s var(--ease) infinite;
  animation-delay: var(--d);
  transform: translate(-50%, -50%);
  white-space: nowrap;
}
.map-pin::before {
  content: '';
  position: absolute;
  left: 50%; top: 100%;
  width: 1px; height: 30px;
  background: var(--ink-mute);
  opacity: 0.3;
}
.map-dot {
  position: absolute;
  left: var(--x);
  top: var(--y);
  width: 8px; height: 8px;
  background: var(--red);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 0 4px rgba(193, 18, 31, 0.1);
  animation: dotPulse 3s var(--ease) infinite;
}
.map-dot:nth-child(odd) { animation-delay: 1.5s; }

@keyframes pinFade {
  0%, 100% { opacity: 0; }
  10%, 90% { opacity: 0.5; }
}
@keyframes dotPulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); box-shadow: 0 0 0 4px rgba(193, 18, 31, 0.1); }
  50% { transform: translate(-50%, -50%) scale(1.2); box-shadow: 0 0 0 8px rgba(193, 18, 31, 0.05); }
}

/* 导航 */
.nav {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 48px;
  padding: 24px var(--gutter);
  max-width: var(--container);
  margin: 0 auto;
  width: 100%;
  transition: all 0.4s var(--ease);
}
.nav.scrolled {
  position: fixed;
  top: 0; left: 0; right: 0;
  max-width: 100%;
  padding: 16px var(--gutter);
  background: rgba(247, 245, 240, 0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line-soft);
  box-shadow: 0 4px 30px rgba(0,0,0,0.04);
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.logo-mark { position: relative; }
.trademark {
  font-size: 10px;
  color: var(--red);
  position: absolute;
  top: 2px;
  margin-left: 1px;
  font-family: var(--font-sans);
}
.logo-sep {
  color: var(--ink-faint);
  font-weight: 300;
  font-size: 18px;
}
.logo-text {
  color: var(--ink);
  font-weight: 500;
}
.nav-menu {
  display: flex;
  gap: 36px;
  margin-left: auto;
}
.nav-menu a {
  position: relative;
  font-size: 14px;
  font-weight: 400;
  color: var(--ink-soft);
  padding: 4px 0;
  transition: color 0.3s var(--ease);
}
.nav-menu a::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  bottom: 0;
  height: 1px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s var(--ease);
}
.nav-menu a:hover { color: var(--ink); }
.nav-menu a:hover::after { transform: scaleX(1); transform-origin: left; }
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--ink);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  transition: all 0.3s var(--ease);
}
.nav-cta:hover { background: var(--red); color: var(--white); }
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  margin-left: auto;
}
.nav-burger span {
  display: block;
  width: 24px; height: 1.5px;
  background: var(--ink);
  transition: all 0.3s var(--ease);
}

/* Hero 内容 */
.hero-content {
  position: relative;
  z-index: 5;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: var(--container);
  margin: 0 auto;
  width: 100%;
  padding: 80px var(--gutter) 120px;
}
.hero-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 32px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--ink-mute);
}
.hero-tag-line { flex: 1; height: 1px; background: var(--line-soft); max-width: 200px; }
.hero-title {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(56px, 9vw, 132px);
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin-bottom: 40px;
}
.title-line { display: block; }
.hero-title em {
  font-style: normal;
  color: var(--red);
  position: relative;
  display: inline-block;
}
.hero-title em::after {
  content: '';
  position: absolute;
  left: -4px; right: -4px;
  bottom: 0.05em;
  height: 0.1em;
  background: var(--red);
  opacity: 0.18;
  z-index: -1;
}
.hero-subtitle {
  font-size: clamp(15px, 1.4vw, 18px);
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 720px;
  margin-bottom: 48px;
}
.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 100px;
}
.hero-data {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line-soft);
  padding-top: 40px;
}
.data-cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-right: 24px;
  border-right: 1px solid var(--line-soft);
}
.data-cell:last-child { border-right: 0; }
.data-cell:not(:first-child) { padding-left: 24px; }
.data-num {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(36px, 4vw, 56px);
  line-height: 1;
  color: var(--ink);
  display: inline-block;
}
.data-unit {
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--red);
  margin-left: 4px;
}
.data-label {
  font-size: 13px;
  color: var(--ink-mute);
  letter-spacing: 0.02em;
}
.hero-scroll {
  position: absolute;
  right: var(--gutter);
  bottom: 40px;
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--ink-mute);
}
.scroll-line {
  width: 1px; height: 60px;
  background: var(--ink-mute);
  position: relative;
  overflow: hidden;
}
.scroll-line::after {
  content: '';
  position: absolute;
  left: 0; top: 0;
  width: 1px; height: 20px;
  background: var(--red);
  animation: scrollDown 2s var(--ease) infinite;
}
@keyframes scrollDown {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(300%); }
}

/* ============================================================
   核心优势
   ============================================================ */
.service { background: var(--bg-warm); }
.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.service-card {
  position: relative;
  padding: 48px 32px;
  border-right: 1px solid var(--line-soft);
  transition: all 0.4s var(--ease);
  cursor: default;
}
.service-card:last-child { border-right: 0; }
.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--ink);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.5s var(--ease);
  z-index: 0;
}
.service-card > * { position: relative; z-index: 1; }
.service-card:hover { transform: translateY(-8px); }
.service-card:hover::before { transform: scaleY(1); }
.service-card:hover .card-num,
.service-card:hover .card-title,
.service-card:hover .card-text { color: var(--white); }
.service-card:hover .card-line { background: var(--red); }
.card-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-mute);
  letter-spacing: 0.2em;
  margin-bottom: 60px;
  transition: color 0.3s var(--ease);
}
.card-title {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
  transition: color 0.3s var(--ease);
}
.card-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-mute);
  margin-bottom: 32px;
  transition: color 0.3s var(--ease);
}
.card-line {
  width: 32px; height: 2px;
  background: var(--ink);
  transition: background 0.3s var(--ease);
}

/* ============================================================
   平台矩阵
   ============================================================ */
.platform { background: var(--bg-deep); color: var(--white); }
.platform .section-num { color: rgba(255,255,255,0.5); border-color: rgba(255,255,255,0.2); }
.platform-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.platform-card {
  padding: 48px 32px;
  border-right: 1px solid rgba(255,255,255,0.08);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: all 0.4s var(--ease);
  position: relative;
  cursor: default;
}
.platform-card:nth-child(4n) { border-right: 0; }
.platform-card:hover {
  background: rgba(255,255,255,0.04);
  transform: translateY(-4px);
}
.platform-card:hover .platform-logo {
  background: var(--red);
  color: var(--white);
  border-color: var(--red);
}
.platform-logo {
  width: 56px; height: 56px;
  border: 1px solid rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 24px;
  transition: all 0.4s var(--ease);
}
.platform-card h4 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
}
.platform-card p {
  font-size: 13px;
  line-height: 1.6;
  color: rgba(255,255,255,0.6);
  margin-bottom: 24px;
}
.platform-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--red);
  padding: 4px 0;
  border-top: 1px solid var(--red);
}

/* ============================================================
   服务流程
   ============================================================ */
.process { background: var(--bg); }
.process-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--line-soft);
}
.process-step {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: 40px;
  padding: 40px 0;
  border-bottom: 1px solid var(--line-soft);
  align-items: start;
  transition: padding 0.4s var(--ease);
}
.process-step:hover { padding-left: 24px; background: var(--bg-warm); }
.step-num {
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 500;
  color: var(--red);
  line-height: 1;
}
.step-body h4 {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
}
.step-body p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-mute);
  max-width: 600px;
}
.step-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
  padding-top: 8px;
  white-space: nowrap;
}

/* ============================================================
   行业场景
   ============================================================ */
.industry { background: var(--bg-warm); }
.industry-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-bottom: 1px solid var(--line-soft);
  margin-bottom: 60px;
}
.industry-tab {
  padding: 20px 32px;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 500;
  color: var(--ink-mute);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all 0.3s var(--ease);
}
.industry-tab:hover { color: var(--ink); }
.industry-tab.active {
  color: var(--ink);
  border-bottom-color: var(--red);
  font-weight: 700;
}
.industry-panels { position: relative; min-height: 360px; }
.industry-panel {
  display: none;
  animation: fadeUp 0.5s var(--ease);
}
.industry-panel.active { display: block; }
.industry-panel h3 {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 24px;
}
.industry-panel p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft);
  margin-bottom: 24px;
  max-width: 800px;
}
.industry-panel ul {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  border-top: 1px solid var(--line-soft);
  padding-top: 24px;
  max-width: 800px;
}
.industry-panel li {
  font-size: 14px;
  color: var(--ink-soft);
  padding: 8px 0;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   关于闫宝龙
   ============================================================ */
.about {
  background: var(--bg-deep);
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.about::before {
  content: '闫宝龙';
  position: absolute;
  right: -5%;
  top: 10%;
  font-family: var(--font-serif);
  font-size: clamp(180px, 24vw, 360px);
  font-weight: 900;
  color: rgba(255,255,255,0.02);
  line-height: 0.8;
  letter-spacing: -0.05em;
  pointer-events: none;
  z-index: 0;
}
.about .container { position: relative; z-index: 1; }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  align-items: center;
}
.about-photo { position: relative; }
.photo-frame {
  position: relative;
  aspect-ratio: 4/5;
  background: var(--bg-navy);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.1);
}
.photo-frame img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(0.2) contrast(1.05);
  transition: filter 0.6s var(--ease);
}
.photo-frame:hover img { filter: grayscale(0) contrast(1); }
.photo-stamp {
  position: absolute;
  top: 24px; right: 24px;
  width: 64px; height: 64px;
  background: var(--red);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.1;
  text-align: center;
  transform: rotate(-8deg);
  border-radius: 4px;
  box-shadow: 0 8px 24px rgba(193, 18, 31, 0.3);
}
.photo-cap {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.4);
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: 16px;
}
.about-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--red);
  margin-bottom: 24px;
  padding: 6px 0;
  border-bottom: 1px solid var(--red);
}
.about-title {
  font-family: var(--font-serif);
  font-size: clamp(36px, 4.5vw, 56px);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 32px;
}
.about-title em {
  color: var(--red);
  font-style: normal;
  position: relative;
  display: inline-block;
}
.about-title em::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  bottom: 0.1em;
  height: 0.18em;
  background: var(--red);
  opacity: 0.2;
  z-index: -1;
}
.about-lead {
  font-size: 18px;
  line-height: 1.8;
  color: rgba(255,255,255,0.85);
  margin-bottom: 24px;
}
.about-text {
  font-size: 15px;
  line-height: 1.9;
  color: rgba(255,255,255,0.6);
  margin-bottom: 40px;
}
.about-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  padding: 32px 0;
  margin-bottom: 32px;
}
.about-stats > div {
  text-align: left;
  border-right: 1px solid rgba(255,255,255,0.08);
  padding-right: 16px;
}
.about-stats > div:last-child { border-right: 0; }
.about-stats strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 700;
  color: var(--white);
  line-height: 1;
  margin-bottom: 8px;
}
.about-stats strong small {
  font-size: 14px;
  color: var(--red);
  margin-left: 2px;
}
.about-stats span {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.05em;
}
.about-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.badge {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid rgba(255,255,255,0.2);
  font-size: 12px;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.05em;
  transition: all 0.3s var(--ease);
}
.badge:hover {
  background: var(--red);
  border-color: var(--red);
  color: var(--white);
}

/* ============================================================
   价格套餐
   ============================================================ */
.price { background: var(--bg-navy); color: var(--white); position: relative; overflow: hidden; }
.price::before {
  content: 'PRICING';
  position: absolute;
  left: -3%;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: clamp(160px, 22vw, 320px);
  font-weight: 500;
  color: rgba(255,255,255,0.025);
  letter-spacing: -0.05em;
  pointer-events: none;
}
.price .container { position: relative; z-index: 1; }
.price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}
.price-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 48px 32px;
  display: flex;
  flex-direction: column;
  transition: all 0.4s var(--ease);
  position: relative;
}
.price-card:hover {
  background: rgba(255,255,255,0.05);
  transform: translateY(-4px);
}
.price-card.featured {
  background: rgba(193, 18, 31, 0.05);
  border-color: var(--red);
  transform: scale(1.02);
}
.price-card.featured:hover { transform: scale(1.02) translateY(-4px); }
.price-badge {
  position: absolute;
  top: -1px; left: 50%;
  transform: translateX(-50%) translateY(-50%);
  background: var(--red);
  color: var(--white);
  padding: 6px 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  white-space: nowrap;
}
.price-card h3 {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
}
.price-sub {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 32px;
  letter-spacing: 0.05em;
}
.price-num {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.price-num span {
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--red);
}
.price-num {
  font-family: var(--font-serif);
  font-size: 64px;
  font-weight: 700;
  line-height: 1;
}
.price-num small {
  font-size: 14px;
  font-weight: 400;
  color: rgba(255,255,255,0.5);
  margin-left: 8px;
}
.price-list {
  flex: 1;
  margin-bottom: 32px;
}
.price-list li {
  padding: 10px 0;
  font-size: 14px;
  color: rgba(255,255,255,0.8);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.price-list li:last-child { border-bottom: 0; }
.price-card .btn-outline { background: transparent; }
.price-card .btn-primary { background: var(--white); color: var(--ink); border-color: var(--white); }
.price-card .btn-primary::before { background: var(--red); }
.price-card .btn-primary:hover { color: var(--white); border-color: var(--red); }

/* ============================================================
   FAQ
   ============================================================ */
.faq { background: var(--bg); }
.faq-list {
  border-top: 1px solid var(--line-soft);
}
.faq-item {
  border-bottom: 1px solid var(--line-soft);
  transition: background 0.3s var(--ease);
}
.faq-item[open] { background: var(--bg-warm); }
.faq-item summary {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 28px 0;
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: padding 0.3s var(--ease);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { padding-left: 12px; }
.faq-q {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--red);
  letter-spacing: 0.1em;
  font-weight: 500;
  flex-shrink: 0;
  width: 48px;
}
.faq-item summary {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
}
.faq-toggle {
  margin-left: auto;
  width: 24px; height: 24px;
  position: relative;
  flex-shrink: 0;
}
.faq-toggle::before, .faq-toggle::after {
  content: '';
  position: absolute;
  background: var(--ink);
  transition: all 0.3s var(--ease);
}
.faq-toggle::before { left: 50%; top: 0; bottom: 0; width: 1px; transform: translateX(-50%); }
.faq-toggle::after { top: 50%; left: 0; right: 0; height: 1px; transform: translateY(-50%); }
.faq-item[open] .faq-toggle::before { transform: translateX(-50%) rotate(90deg); opacity: 0; }
.faq-a {
  padding: 0 0 32px 80px;
  max-width: 900px;
}
.faq-a p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-soft);
}
.faq-a strong { color: var(--ink); font-weight: 700; }

/* ============================================================
   联系方式
   ============================================================ */
.contact { background: var(--bg-warm); padding: 120px 0; }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.contact-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--red);
  margin-bottom: 24px;
  padding: 6px 0;
  border-bottom: 1px solid var(--red);
}
.contact-title {
  font-family: var(--font-serif);
  font-size: clamp(36px, 4.5vw, 56px);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 24px;
}
.contact-title em {
  font-style: normal;
  color: var(--red);
  position: relative;
  display: inline-block;
}
.contact-title em::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  bottom: 0.1em;
  height: 0.18em;
  background: var(--red);
  opacity: 0.18;
  z-index: -1;
}
.contact-lead {
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-mute);
  margin-bottom: 48px;
  max-width: 480px;
}
.contact-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--line-soft);
}
.contact-list li {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line-soft);
  align-items: center;
}
.contact-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
}
.contact-value {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 500;
  color: var(--ink);
}
a.contact-value:hover { color: var(--red); }
.contact-qr {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.qr-card {
  position: relative;
  background: var(--white);
  padding: 24px;
  text-align: center;
  border: 1px solid var(--line-soft);
  overflow: hidden;
}
.qr-glow {
  position: absolute;
  top: 24px; left: 50%;
  transform: translateX(-50%);
  width: 180px; height: 180px;
  background: radial-gradient(circle, rgba(193, 18, 31, 0.08), transparent 70%);
  animation: glowPulse 3s var(--ease) infinite;
  z-index: 0;
}
@keyframes glowPulse {
  0%, 100% { transform: translateX(-50%) scale(1); opacity: 0.6; }
  50% { transform: translateX(-50%) scale(1.1); opacity: 1; }
}
.qr-card img {
  position: relative;
  z-index: 1;
  width: 180px; height: 180px;
  margin: 0 auto 16px;
  object-fit: contain;
  mix-blend-mode: multiply;
}
.qr-card p {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
  position: relative;
  z-index: 1;
}
.qr-card span {
  font-size: 12px;
  color: var(--ink-mute);
  position: relative;
  z-index: 1;
}
.qr-card.secondary {
  background: var(--ink);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
}
.qr-tel {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 16px 0;
}
.qr-tel span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.5);
}
.qr-tel strong {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--white);
}
.qr-tel .btn {
  margin-top: 12px;
  background: var(--white);
  color: var(--ink);
  border-color: var(--white);
  width: 100%;
  justify-content: center;
}
.qr-tel .btn::before { background: var(--red); }
.qr-tel .btn:hover { color: var(--white); border-color: var(--red); }

/* ============================================================
   底部
   ============================================================ */
.footer {
  background: var(--bg-deep);
  color: rgba(255,255,255,0.5);
  padding: 80px 0 40px;
}
.footer-friend {
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 40px;
}
.footer-friend-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 32px;
  letter-spacing: 0.05em;
}
.footer-friend-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  border-left: 1px solid rgba(255,255,255,0.06);
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-friend-grid a {
  padding: 14px 16px;
  font-size: 13px;
  border-right: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: all 0.3s var(--ease);
  color: rgba(255,255,255,0.6);
}
.footer-friend-grid a:hover {
  background: rgba(193, 18, 31, 0.1);
  color: var(--red);
}
.footer-bottom {
  text-align: center;
  font-size: 13px;
  line-height: 2;
}
.footer-link { color: rgba(255,255,255,0.7); transition: color 0.3s var(--ease); }
.footer-link:hover { color: var(--red); }
.footer-extra {
  font-size: 12px;
  color: rgba(255,255,255,0.3);
  margin-top: 8px;
  letter-spacing: 0.05em;
}

/* ============================================================
   入场动画
   ============================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  :root { --gutter: 24px; }
  .section { padding: 80px 0; }
  .nav-menu { display: none; }
  .nav-burger { display: flex; }
  .nav-burger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .nav-burger.open span:nth-child(2) { opacity: 0; }
  .nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .nav-menu.mobile-open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--bg);
    z-index: 100;
    padding: 100px 32px 32px;
    gap: 24px;
  }
  .nav-menu.mobile-open a { font-family: var(--font-serif); font-size: 24px; font-weight: 700; color: var(--ink); }
  .hero-data { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .data-cell { border-right: 0; }
  .data-cell:nth-child(odd) { border-right: 1px solid var(--line-soft); }
  .data-cell:nth-child(-n+2) { padding-bottom: 24px; border-bottom: 1px solid var(--line-soft); }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .service-card { border-right: 1px solid var(--line-soft); }
  .service-card:nth-child(2n) { border-right: 0; }
  .service-card:nth-child(-n+2) { border-bottom: 1px solid var(--line-soft); }
  .platform-grid { grid-template-columns: repeat(2, 1fr); }
  .platform-card:nth-child(2n) { border-right: 0; }
  .about-grid { grid-template-columns: 1fr; gap: 60px; }
  .price-grid { grid-template-columns: 1fr; }
  .price-card.featured { transform: none; }
  .price-card.featured:hover { transform: translateY(-4px); }
  .contact-grid { grid-template-columns: 1fr; gap: 60px; }
  .contact-qr { grid-template-columns: 1fr 1fr; }
  .footer-friend-grid { grid-template-columns: repeat(3, 1fr); }
  .industry-panel ul { grid-template-columns: 1fr; }
  .hero-cta { margin-bottom: 60px; }
  .hero-scroll { display: none; }
}
@media (max-width: 640px) {
  :root { --gutter: 20px; }
  .section { padding: 60px 0; }
  .section-head { margin-bottom: 48px; }
  .nav { padding: 16px var(--gutter); gap: 16px; }
  .nav-cta { display: none; }
  .hero-content { padding: 40px var(--gutter) 80px; }
  .hero-meta { font-size: 10px; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { justify-content: center; }
  .hero-data { grid-template-columns: 1fr 1fr; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card { border-right: 0; border-bottom: 1px solid var(--line-soft); }
  .service-card:last-child { border-bottom: 0; }
  .platform-grid { grid-template-columns: 1fr 1fr; }
  .process-step { grid-template-columns: 60px 1fr; gap: 16px; }
  .step-num { font-size: 24px; }
  .step-body h4 { font-size: 20px; }
  .step-meta { grid-column: 1 / -1; padding-left: 76px; padding-top: 0; }
  .industry-tab { padding: 14px 16px; font-size: 14px; }
  .about-stats { grid-template-columns: 1fr 1fr; gap: 16px; }
  .about-stats > div { border-right: 0; padding-right: 0; }
  .contact-qr { grid-template-columns: 1fr; }
  .footer-friend-grid { grid-template-columns: repeat(2, 1fr); }
  .faq-item summary { gap: 16px; font-size: 16px; padding: 20px 0; }
  .faq-q { width: 32px; font-size: 12px; }
  .faq-a { padding: 0 0 24px 48px; }
  .price-num { font-size: 48px; }
}

/* 选区 */
::selection { background: var(--red); color: var(--white); }

/* 滚动条 */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--ink-faint); }
::-webkit-scrollbar-thumb:hover { background: var(--ink-mute); }