/* ==========================================================
   饿饭加速器 · 深空石墨主题 (Graphite Blue)
   与黑白闪电 logo 协调：石墨深底 / 冷银白文字 / 电光蓝强调
   ========================================================== */

/* ---------- 1. 设计变量 ---------- */
:root {
  --bg: #070f1c;
  --bg-alt: #0b1a33;
  --surface: #0d1c33;
  --surface-2: #12233f;
  --line: rgba(130, 170, 240, 0.18);
  --line-mid: rgba(130, 170, 240, 0.32);
  --line-strong: rgba(110, 165, 255, 0.55);
  --accent: #4d8dff;
  --accent-lite: #8ab6ff;
  --accent-pale: #e8f0ff;
  --accent-deep: #1f4fa8;
  --grad-accent: linear-gradient(135deg, #1f4fa8 0%, #4d8dff 46%, #a9caff 100%);
  --grad-line: linear-gradient(90deg, transparent, rgba(110, 165, 255, 0.55), transparent);
  --silver: #cfdcf0;
  --text: #eaf1fb;
  --text-2: #a6b7d2;
  --text-3: #6f8099;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.62);
  --shadow-accent: 0 14px 42px rgba(77, 141, 255, 0.2);
  --serif: "Playfair Display", "Source Han Serif SC", "Noto Serif SC", "Songti SC", "STSong", "SimSun", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  --container: 1240px;
  --r-sm: 10px;
  --r: 16px;
  --r-lg: 22px;
}

/* ---------- 2. 基础 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  color: var(--text);
  background-color: var(--bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  position: relative;
}

/* 冷调光晕 + 细网格 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse 900px 520px at 80% -10%, rgba(77, 141, 255, 0.16), transparent 62%),
    radial-gradient(ellipse 780px 480px at 4% 6%, rgba(90, 130, 210, 0.13), transparent 60%),
    radial-gradient(ellipse 1000px 620px at 50% 108%, rgba(60, 110, 200, 0.1), transparent 62%);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
  background-image:
    linear-gradient(rgba(130, 170, 240, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(130, 170, 240, 0.07) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 28%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 28%, transparent 78%);
}

body > * { position: relative; z-index: 1; }

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

::selection { background: rgba(77, 141, 255, 0.32); color: #fff; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #050b16; }
::-webkit-scrollbar-thumb { background: linear-gradient(180deg, #1f4fa8, #6fa4ff); border-radius: 10px; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ---------- 3. 顶栏 ---------- */
.header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(7, 15, 28, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  height: 70px;
}
.header::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 1px;
  background: var(--grad-line); opacity: 0.9;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 70px; }

/* 品牌区：沿用官方原版标志（浅底深闪电），仅加圆角与描边适配深色头部，不做染色 */
.logo { display: flex; align-items: center; gap: 11px; font-size: 21px; font-weight: 700; color: var(--accent-pale); font-family: var(--serif); letter-spacing: 1px; }
.logo img {
  height: 38px; width: 38px; object-fit: contain; border-radius: 9px;
  background: #e9e9ea;
  border: 1px solid var(--line-mid);
  padding: 0; filter: none;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.32);
}

.nav { display: flex; align-items: center; gap: 34px; font-size: 15px; }
.nav a { color: var(--text-2); transition: color 0.25s; position: relative; padding-bottom: 2px; }
.nav a:hover { color: var(--accent-lite); }
.nav a.active { color: var(--accent-lite); }
.nav a.active::after {
  content: ""; position: absolute; left: 50%; bottom: -9px; transform: translateX(-50%);
  width: 20px; height: 2px; border-radius: 2px; background: var(--grad-accent);
}
.header-actions { display: flex; align-items: center; gap: 12px; }

/* ---------- 4. 按钮 ---------- */
.btn {
  display: inline-block; padding: 10px 24px; border-radius: var(--r-sm);
  font-size: 15px; font-weight: 600; transition: all 0.28s; cursor: pointer; text-align: center;
  border: 1px solid transparent;
}
.btn-outline { color: var(--silver); border-color: var(--line-strong); background: transparent; }
.btn-outline:hover { background: rgba(77, 141, 255, 0.12); color: var(--accent-pale); border-color: var(--accent); }
.btn-primary {
  color: #fff; background: var(--grad-accent); border: none;
  box-shadow: 0 6px 22px rgba(77, 141, 255, 0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 34px rgba(77, 141, 255, 0.42); filter: brightness(1.07); }
.btn-lg { padding: 15px 38px; font-size: 17px; border-radius: 12px; }
.menu-toggle { display: none; font-size: 26px; background: none; border: none; cursor: pointer; color: var(--accent-lite); }

/* ---------- 5. Hero 首屏 ---------- */
.hero {
  padding: 84px 0 96px;
  position: relative; overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.hero::before {
  content: ""; position: absolute; top: -260px; right: -180px; width: 700px; height: 700px;
  border-radius: 50%; pointer-events: none;
  background: radial-gradient(circle, rgba(77, 141, 255, 0.18), transparent 66%);
}
.hero::after {
  content: ""; position: absolute; bottom: -220px; left: -160px; width: 560px; height: 560px;
  border-radius: 50%; pointer-events: none;
  background: radial-gradient(circle, rgba(120, 150, 210, 0.14), transparent 68%);
}
.hero-inner { display: flex; align-items: center; gap: 64px; }
.hero-text { flex: 1 1 52%; min-width: 0; }
.hero-text h1 {
  font-family: var(--sans);
  font-size: 62px; font-weight: 800; line-height: 1.24; letter-spacing: -0.5px;
  color: #fff; margin-bottom: 22px;
}
.hero-text h1 span {
  background: var(--grad-accent);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-text p { font-size: 16px; color: #b9c6da; max-width: 520px; margin-bottom: 34px; }
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 46px; }




/* 客户端插画 */



























/* 首屏全幅背景图（透明底产品渲染图，构图对齐 QuickQ） */
.hero-full {
  position: relative; overflow: hidden;
  padding: 96px 0 104px;
  min-height: calc(100vh - 70px);
  min-height: calc(100svh - 70px);
  display: flex; align-items: center;
  background:
    radial-gradient(1180px 1010px at 66% 44%, rgba(28, 82, 150, .3) 0%, rgba(28, 82, 150, 0) 70%),
    linear-gradient(35deg, #0b2444 0%, #05101f 72%);
}
.hero-art {
  position: absolute; left: 23%; bottom: 0; z-index: 0;
  width: 74%; height: auto; max-width: none;
  pointer-events: none; opacity: .98;
}
.hero-mask {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background:
    linear-gradient(90deg, rgba(4, 12, 24, .93) 0%, rgba(4, 12, 24, .7) 28%, rgba(4, 12, 24, .18) 44%, rgba(4, 12, 24, 0) 56%),
    linear-gradient(180deg, rgba(4, 12, 24, .45) 0%, rgba(4, 12, 24, 0) 18%, rgba(4, 12, 24, 0) 74%, rgba(4, 12, 24, .7) 100%);
}
.hero-full .hero-inner { position: relative; z-index: 2; display: block; width: 100%; max-width: none; padding-left: 64px; padding-right: 64px; }
.hero-full .hero-text { max-width: 620px; margin-left: 0; }

/* 标题上方的品牌小标签 */
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 13px; font-weight: 700; letter-spacing: 4px;
  color: #e0bf7c; margin-bottom: 22px;
}
.hero-eyebrow::before {
  content: ""; width: 30px; height: 2px; border-radius: 2px;
  background: #e0bf7c;
}

/* 深色次按钮 */
.btn-ghost-dark {
  color: #dbe4f3; background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .16);
}
.btn-ghost-dark:hover { background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .3); color: #fff; }

/* ---------- 通栏下载横幅（band） ---------- */
.band {
  padding: 52px 0;
  position: relative;
  background: #0b2d63 url('image/hero-bg.webp') center/cover no-repeat;
}
.band-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.band h2 { margin: 0; font-size: 34px; font-weight: 800; color: #fff; letter-spacing: -0.5px; }
.band p { margin: 4px 0 0; color: #c8ddff; font-size: 15px; }
.band .btn { flex-shrink: 0; }

/* ---------- 通栏数据条（stats） ---------- */
.stats {
  border-block: 1px solid rgba(255, 255, 255, .08);
  background: #09172a;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); padding: 30px 0; }
.stat { text-align: center; border-right: 1px solid rgba(255, 255, 255, .09); }
.stat:last-child { border-right: 0; }
.stat b { display: block; color: #fff; font-size: 27px; font-weight: 800; letter-spacing: -0.3px; }
.stat span { font-size: 13px; color: #8f9db3; }

/* ---------- 6. 通用区块 ---------- */
.section { padding: 92px 0; position: relative; }
.section.alt { background: var(--bg-alt); }
.section.alt::before, .section.alt::after {
  content: ""; position: absolute; left: 0; right: 0; height: 1px; background: var(--grad-line); opacity: 0.65;
}
.section.alt::before { top: 0; }
.section.alt::after { bottom: 0; }

.section-title { text-align: center; margin-bottom: 56px; }
.section-title h2 {
  font-family: var(--sans);
  font-size: 38px; font-weight: 800; color: var(--accent-pale); margin-bottom: 16px; letter-spacing: 1px;
  position: relative; display: inline-block;
}
.section-title h2::after {
  content: ""; display: block; width: 54px; height: 2px; margin: 16px auto 0;
  background: var(--grad-accent); border-radius: 2px;
}
.section-title p { font-size: 17px; color: var(--text-2); max-width: 640px; margin: 18px auto 0; }

/* ---------- 7. 卡片通用 ---------- */
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.feature-card {
  background: linear-gradient(165deg, var(--surface) 0%, #0a1626 100%);
  border-radius: var(--r); padding: 38px 28px; text-align: center;
  border: 1px solid var(--line);
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
  position: relative; overflow: hidden;
}
.feature-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: var(--grad-accent); opacity: 0; transition: opacity 0.35s ease;
}
.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-accent);
}
.feature-card:hover::before { opacity: 1; }
.feature-card .icon { font-size: 42px; margin-bottom: 18px; display: block; filter: saturate(0.85) brightness(1.08); }
.feature-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; color: var(--accent-pale); font-family: var(--sans); letter-spacing: 1px; }
.feature-card p { font-size: 15px; color: var(--text-2); line-height: 1.8; }

.link-more { text-align: center; margin-top: 34px; }
.link-more a {
  color: var(--accent-lite); font-weight: 600; font-size: 16px; letter-spacing: 1px;
  border-bottom: 1px solid var(--line-strong); padding-bottom: 4px; transition: all 0.25s;
}
.link-more a:hover { color: var(--accent-pale); border-color: var(--accent); }

/* ---------- 8. 步骤 ---------- */
.steps { display: flex; justify-content: center; gap: 38px; flex-wrap: wrap; }
.step {
  flex: 1; min-width: 230px; max-width: 320px; text-align: center; position: relative;
  background: linear-gradient(165deg, var(--surface) 0%, #0a1626 100%);
  border-radius: var(--r); padding: 36px 26px;
  border: 1px solid var(--line);
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.step:hover { transform: translateY(-4px); border-color: var(--line-strong); }
.step .num {
  width: 58px; height: 58px; border-radius: 50%;
  background: transparent; border: 1px solid var(--line-strong);
  color: var(--accent-lite); font-family: var(--serif); font-size: 25px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 18px;
  box-shadow: inset 0 0 20px rgba(77, 141, 255, 0.16);
}
.step h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; color: var(--accent-pale); font-family: var(--sans); letter-spacing: 1px; }
.step p { font-size: 15px; color: var(--text-2); }
.step .step-link { display: inline-block; margin-top: 14px; color: var(--accent-lite); font-size: 14px; font-weight: 600; }
.step .step-link:hover { color: var(--accent-pale); text-decoration: underline; }

/* ---------- 9. 评价 ---------- */
.testimonials { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.testimonial {
  background: linear-gradient(165deg, var(--surface) 0%, #0a1626 100%);
  border-radius: var(--r); padding: 34px 30px;
  border: 1px solid var(--line);
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.testimonial:hover { transform: translateY(-4px); border-color: var(--line-strong); }
.testimonial .stars { color: var(--accent-lite); font-size: 17px; margin-bottom: 16px; letter-spacing: 3px; }
.testimonial p { font-size: 15px; color: var(--text-2); line-height: 1.9; margin-bottom: 20px; }
.testimonial .user { display: flex; align-items: center; gap: 12px; }
.testimonial .avatar {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--grad-accent); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 18px; font-family: var(--serif);
}
.testimonial .user-info .name { font-size: 15px; font-weight: 600; color: var(--text); }
.testimonial .user-info .role { font-size: 13px; color: var(--text-3); }

/* ---------- 10. CTA ---------- */










/* 横屏下载横幅（左文 · 右图 · 按钮） */









/* ---------- 11. 页脚 ---------- */
.footer {
  background: #050b16; color: var(--text-3); padding: 68px 0 30px; margin-top: 96px;
  border-top: 1px solid var(--line);
  position: relative;
}
.footer::before {
  content: ""; position: absolute; top: -1px; left: 0; right: 0; height: 1px; background: var(--grad-line);
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 46px; }
.footer-brand .logo { color: var(--accent-pale); margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.9; color: var(--text-3); max-width: 330px; }
.footer h4 { color: var(--accent-lite); font-size: 16px; font-weight: 700; margin-bottom: 18px; font-family: var(--sans); letter-spacing: 1px; }
.footer ul li { margin-bottom: 11px; }
.footer ul li a { font-size: 14px; color: var(--text-3); transition: color 0.22s; }
.footer ul li a:hover { color: var(--accent-lite); }
.footer-bottom {
  border-top: 1px solid var(--line); padding-top: 26px;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px; font-size: 13px; color: #64748f;
}

/* ---------- 12. 悬浮按钮 ---------- */
.float-btn {
  position: fixed; right: 24px; z-index: 999; width: 52px; height: 52px;
  border-radius: 50%; background: #0e1e36;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.55);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; cursor: pointer; transition: all 0.3s;
  border: 1px solid var(--line-mid);
  color: var(--accent-lite);
}
.float-btn:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: 0 10px 30px rgba(77, 141, 255, 0.28); }
.float-service { bottom: 96px; }
.float-top { bottom: 32px; font-size: 20px; }

/* ---------- 13. 内页头部（左文右图，与首页统一） ---------- */
.page-hero {
  padding: 96px 0;
  text-align: left;
  position: relative; overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(1180px 1010px at 66% 44%, rgba(28, 82, 150, .3) 0%, rgba(28, 82, 150, 0) 70%),
    linear-gradient(35deg, #0b2444 0%, #05101f 72%);
  min-height: calc(100vh - 70px);
  min-height: calc(100svh - 70px);
  display: flex; align-items: center;
}
.page-hero::after {
  content: ""; position: absolute; left: 0; bottom: -1px;
  width: 220px; height: 2px; background: var(--grad-accent); border-radius: 2px; z-index: 2;
}
.page-hero .container { position: relative; z-index: 2; width: 100%; max-width: none; padding-left: 64px; padding-right: 64px; }
.page-hero h1,
.page-hero p,
.page-hero .hero-buttons,
.page-hero .hero-eyebrow { margin-left: 0; }
.page-hero h1 {
  font-family: var(--sans);
  font-size: 56px; font-weight: 800; line-height: 1.24; letter-spacing: -0.5px;
  color: #fff; margin-bottom: 18px; max-width: 560px;
}
.page-hero h1 span {
  background: var(--grad-accent);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.page-hero p { font-size: 17px; color: var(--text-2); max-width: 580px; margin: 0 0 32px; }
.page-hero .hero-buttons { display: flex; gap: 16px; justify-content: flex-start; flex-wrap: wrap; }

/* ---------- 14. 功能页 ---------- */
.feature-row { display: flex; align-items: center; gap: 64px; margin-bottom: 78px; }
.feature-row:last-child { margin-bottom: 0; }
.feature-row.reverse { flex-direction: row-reverse; }
.feature-text { flex: 1; min-width: 0; }
.feature-text .tag {
  display: inline-block; padding: 5px 15px; border-radius: 20px;
  background: rgba(77, 141, 255, 0.12); color: var(--accent-lite); font-size: 13px; font-weight: 600;
  margin-bottom: 16px; border: 1px solid var(--line);
}
.feature-text h3 { font-family: var(--sans); font-size: 30px; font-weight: 700; color: var(--accent-pale); margin-bottom: 16px; letter-spacing: 1px; }
.feature-text p { font-size: 16px; color: var(--text-2); margin-bottom: 22px; line-height: 1.9; }
.feature-text ul li {
  padding: 7px 0; font-size: 15px; color: var(--text-2);
  display: flex; align-items: flex-start; gap: 10px;
}
.feature-text ul li::before { content: "▸"; color: var(--accent-lite); font-size: 12px; flex-shrink: 0; margin-top: 5px; }
.feature-visual {
  flex: 1; min-width: 0;
  background: linear-gradient(150deg, #0f2038 0%, #0a1626 100%);
  border-radius: var(--r-lg); padding: 48px 40px; min-height: 320px;
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
  border: 1px solid var(--line);
}
.feature-visual::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(circle at 70% 26%, rgba(77, 141, 255, 0.16), transparent 62%);
}
.feature-visual .big-icon { font-size: 104px; position: relative; z-index: 1; filter: saturate(0.8) brightness(1.05); }

.scenes-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.scene-card {
  background: linear-gradient(165deg, var(--surface) 0%, #0a1626 100%);
  border-radius: var(--r); padding: 32px 28px;
  border: 1px solid var(--line);
  display: flex; gap: 20px; transition: transform 0.3s ease, border-color 0.3s ease;
}
.scene-card:hover { transform: translateY(-4px); border-color: var(--line-strong); box-shadow: var(--shadow-accent); }
.scene-card .scene-icon {
  width: 54px; height: 54px; border-radius: 14px;
  background: rgba(77, 141, 255, 0.12); border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center; font-size: 25px; flex-shrink: 0;
}
.scene-card .scene-body h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; color: var(--accent-pale); font-family: var(--sans); letter-spacing: 1px; }
.scene-card .scene-body p { font-size: 15px; color: var(--text-2); line-height: 1.85; }

/* ---------- 15. 价格页 ---------- */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.pricing-card {
  background: linear-gradient(165deg, var(--surface) 0%, #0a1626 100%);
  border-radius: var(--r-lg); padding: 42px 32px; text-align: center;
  border: 1px solid var(--line);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  position: relative;
}
.pricing-card:hover { transform: translateY(-5px); border-color: var(--line-strong); box-shadow: var(--shadow-accent); }
.pricing-card.recommended {
  border: 1px solid var(--accent);
  background: linear-gradient(165deg, #142844 0%, #0d1b30 100%);
  box-shadow: var(--shadow-accent);
}
.pricing-card.recommended::before {
  content: ""; position: absolute; inset: 0; border-radius: var(--r-lg); pointer-events: none;
  box-shadow: inset 0 0 40px rgba(77, 141, 255, 0.1);
}
.badge {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: var(--grad-accent); color: #fff;
  font-size: 12px; font-weight: 700; padding: 5px 20px; border-radius: 20px; white-space: nowrap; letter-spacing: 1px;
}
.pricing-card h3 { font-size: 22px; font-weight: 700; margin-bottom: 10px; color: var(--accent-pale); font-family: var(--sans); letter-spacing: 1px; }
.pricing-card .price { font-family: var(--serif); font-size: 46px; font-weight: 700; color: var(--accent-lite); margin-bottom: 6px; line-height: 1.2; }
.pricing-card .price span { font-size: 15px; font-weight: 400; color: var(--text-3); }
.pricing-card .desc { font-size: 14px; color: var(--text-3); margin-bottom: 26px; }
.pricing-card ul { text-align: left; margin-bottom: 30px; }
.pricing-card ul li {
  padding: 9px 0; font-size: 15px; color: var(--text-2);
  display: flex; align-items: center; gap: 10px; border-bottom: 1px solid var(--line);
}
.pricing-card ul li:last-child { border-bottom: none; }
.pricing-card ul li::before { content: "▸"; color: var(--accent-lite); font-size: 12px; }
.pricing-card .btn { width: 100%; }
.refund-note { text-align: center; margin-top: 26px; font-size: 14px; color: var(--text-3); }
.refund-note a { color: var(--accent-lite); text-decoration: underline; }

.compare-wrap {
  background: linear-gradient(165deg, var(--surface) 0%, #0a1626 100%);
  border-radius: var(--r-lg); padding: 40px;
  border: 1px solid var(--line);
  overflow-x: auto;
}
.compare-wrap table { width: 100%; border-collapse: collapse; min-width: 620px; }
.compare-wrap th {
  text-align: center; padding: 16px 18px; font-size: 15px; font-weight: 600;
  color: var(--accent-pale); background: #14243d;
  border-bottom: 1px solid var(--line-mid); white-space: nowrap;
}
.compare-wrap th:first-child { text-align: left; }
.compare-wrap th.highlight { background: var(--grad-accent); color: #fff; }
.compare-wrap td {
  padding: 15px 18px; font-size: 14px; color: var(--text-2);
  text-align: center; border-bottom: 1px solid var(--line);
}
.compare-wrap td:first-child { text-align: left; font-weight: 600; color: var(--text); }
.compare-wrap tr:last-child td { border-bottom: none; }
.compare-wrap .yes { color: var(--accent-lite); font-weight: 700; }
.compare-wrap .no { color: #61738f; }
.compare-wrap .col-highlight { background: rgba(77, 141, 255, 0.07); }

.policy-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.policy-card {
  background: linear-gradient(165deg, var(--surface) 0%, #0a1626 100%);
  border-radius: var(--r); padding: 36px 30px;
  border: 1px solid var(--line);
}
.policy-card .icon-box {
  width: 56px; height: 56px; border-radius: 15px;
  background: rgba(77, 141, 255, 0.12); border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center; font-size: 26px; margin-bottom: 18px;
}
.policy-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 14px; color: var(--accent-pale); font-family: var(--sans); letter-spacing: 1px; }
.policy-card ol, .policy-card ul { counter-reset: step; }
.policy-card ol li, .policy-card ul li {
  padding: 7px 0; font-size: 15px; color: var(--text-2); line-height: 1.8;
  display: flex; align-items: flex-start; gap: 10px;
}
.policy-card ol li::before {
  content: counter(step); counter-increment: step;
  width: 22px; height: 22px; border-radius: 50%; flex-shrink: 0;
  background: rgba(77, 141, 255, 0.16); color: var(--accent-lite); font-size: 12px; font-weight: 700;
  display: flex; align-items: center; justify-content: center; margin-top: 4px;
}
.policy-card ul li::before { content: "▸"; color: var(--accent-lite); font-size: 12px; flex-shrink: 0; margin-top: 5px; }
.policy-card a { color: var(--accent-lite); text-decoration: underline; }

/* ---------- 16. 下载页 ---------- */
.download-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.download-card {
  background: linear-gradient(165deg, var(--surface) 0%, #0a1626 100%);
  border-radius: var(--r-lg); padding: 36px 32px;
  border: 1px solid var(--line);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  display: flex; flex-direction: column;
}
.download-card:hover { transform: translateY(-4px); border-color: var(--line-strong); box-shadow: var(--shadow-accent); }
.download-card .card-head { display: flex; align-items: center; gap: 16px; margin-bottom: 22px; }
.download-card .platform-icon {
  width: 64px; height: 64px; border-radius: 16px;
  background: rgba(4, 12, 24, .5); border: 1px solid rgba(130, 170, 240, .25);
  display: flex; align-items: center; justify-content: center; font-size: 32px; flex-shrink: 0;
}
.download-card .platform-icon img { width: 34px; height: 34px; object-fit: contain; }
.download-card .card-info h3 { font-size: 22px; font-weight: 700; color: var(--accent-pale); margin-bottom: 5px; font-family: var(--sans); letter-spacing: 1px; }
.download-card .card-info .os-desc { font-size: 13px; color: var(--text-3); }
.download-card .meta-list { margin-bottom: 26px; flex: 1; }
.download-card .meta-list li {
  display: flex; justify-content: space-between; padding: 11px 0;
  font-size: 14px; color: var(--text-2); border-bottom: 1px solid var(--line);
}
.download-card .meta-list li:last-child { border-bottom: none; }
.download-card .meta-list li span:first-child { color: var(--text-3); }
.download-card .meta-list li span:last-child { font-weight: 600; color: var(--text); }
.download-card .btn-download {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; padding: 14px 0; font-size: 16px; font-weight: 600;
  color: #fff; background: var(--grad-accent); border-radius: 12px;
  box-shadow: 0 6px 22px rgba(77, 141, 255, 0.3); transition: all 0.3s;
}
.download-card .btn-download:hover { transform: translateY(-2px); filter: brightness(1.07); box-shadow: 0 12px 30px rgba(77, 141, 255, 0.4); }
.download-card .btn-download img { width: 19px; height: 19px; object-fit: contain; opacity: .95; flex-shrink: 0; }
.download-card .qr-note { text-align: center; font-size: 12px; color: var(--text-3); margin-top: 12px; }

.install-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.install-step {
  background: linear-gradient(165deg, var(--surface) 0%, #0a1626 100%);
  border-radius: var(--r); padding: 38px 28px; text-align: center;
  border: 1px solid var(--line); position: relative;
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.install-step:hover { transform: translateY(-4px); border-color: var(--line-strong); }
.install-step .step-num {
  width: 54px; height: 54px; border-radius: 50%;
  background: transparent; border: 1px solid var(--line-strong);
  color: var(--accent-lite); font-family: var(--serif); font-size: 24px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 18px; box-shadow: inset 0 0 20px rgba(77, 141, 255, 0.16);
}
.install-step h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; color: var(--accent-pale); font-family: var(--sans); letter-spacing: 1px; }
.install-step p { font-size: 14px; color: var(--text-2); line-height: 1.8; }

.requirements {
  background: linear-gradient(165deg, var(--surface) 0%, #0a1626 100%);
  border-radius: var(--r-lg); padding: 40px;
  border: 1px solid var(--line); overflow-x: auto;
}
.requirements table { width: 100%; border-collapse: collapse; min-width: 620px; }
.requirements th {
  text-align: left; padding: 15px 16px; font-size: 14px; font-weight: 600;
  color: var(--accent-pale); background: #14243d; border-bottom: 1px solid var(--line-mid); white-space: nowrap;
}
.requirements td { padding: 14px 16px; font-size: 14px; color: var(--text-2); border-bottom: 1px solid var(--line); }
.requirements tr:last-child td { border-bottom: none; }
.requirements td:first-child { font-weight: 600; color: var(--text); }

/* ---------- 17. 帮助页 ---------- */
.support-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.support-card {
  background: linear-gradient(165deg, var(--surface) 0%, #0a1626 100%);
  border-radius: var(--r); padding: 36px 30px;
  border: 1px solid var(--line);
}
.support-card .icon-box {
  width: 56px; height: 56px; border-radius: 15px;
  background: rgba(77, 141, 255, 0.12); border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center; font-size: 27px; margin-bottom: 18px;
}
.support-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 14px; color: var(--accent-pale); font-family: var(--sans); letter-spacing: 1px; }
.support-card ul li {
  padding: 8px 0; font-size: 15px; color: var(--text-2); line-height: 1.8;
  display: flex; align-items: flex-start; gap: 10px;
}
.support-card ul li::before { content: "▸"; color: var(--accent-lite); font-size: 12px; flex-shrink: 0; margin-top: 5px; }
.support-card .btn { margin-top: 20px; }
.support-card a { color: var(--accent-lite); text-decoration: underline; }

/* 提示条 */
.notice {
  background: rgba(77, 141, 255, 0.07);
  border: 1px solid var(--line-mid); border-left: 3px solid var(--accent);
  border-radius: var(--r-sm); padding: 16px 20px; font-size: 14px;
  color: var(--text-2); margin-top: 26px; line-height: 1.8;
}
.notice strong { color: var(--accent-lite); font-weight: 600; }

/* ---------- 18. 关于页 ---------- */
.intro-wrap { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 56px; align-items: center; }
.intro-text h2 { font-family: var(--sans); font-size: 32px; font-weight: 700; color: var(--accent-pale); margin-bottom: 22px; letter-spacing: 1px; }
.intro-text p { font-size: 16px; color: var(--text-2); line-height: 1.95; margin-bottom: 16px; }
.intro-visual {
  background: linear-gradient(150deg, #0f2038 0%, #0a1626 100%);
  border-radius: var(--r-lg); padding: 48px 40px; min-height: 320px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  position: relative; overflow: hidden; border: 1px solid var(--line);
  box-shadow: var(--shadow-accent);
}
.intro-visual::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(circle at 70% 26%, rgba(77, 141, 255, 0.17), transparent 62%);
}
.intro-visual .big-icon { font-size: 92px; position: relative; z-index: 1; filter: saturate(0.85) brightness(1.05); }
.intro-visual .caption {
  margin-top: 18px; font-size: 15px; color: var(--accent-lite); font-weight: 600;
  position: relative; z-index: 1; letter-spacing: 2px;
}

.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.value-card {
  background: linear-gradient(165deg, var(--surface) 0%, #0a1626 100%);
  border-radius: var(--r); padding: 36px 30px;
  border: 1px solid var(--line);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.value-card:hover { transform: translateY(-5px); border-color: var(--line-strong); box-shadow: var(--shadow-accent); }
.value-card .icon-box {
  width: 56px; height: 56px; border-radius: 15px;
  background: rgba(77, 141, 255, 0.12); border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center; font-size: 27px; margin-bottom: 18px;
}
.value-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; color: var(--accent-pale); font-family: var(--sans); letter-spacing: 1px; }
.value-card p { font-size: 15px; color: var(--text-2); line-height: 1.85; }

.nodes {
  background: linear-gradient(165deg, #0f2038 0%, #0a1626 100%);
  border-radius: var(--r-lg); padding: 58px 40px; text-align: center;
  border: 1px solid var(--line);
}
.nodes-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-top: 40px; }
.node-item {
  background: #0c1a2e; border-radius: 14px; padding: 28px 20px;
  border: 1px solid var(--line);
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.node-item:hover { transform: translateY(-4px); border-color: var(--line-strong); }
.node-item .flag { font-size: 34px; margin-bottom: 10px; }
.node-item .name { font-size: 16px; font-weight: 600; color: var(--accent-pale); font-family: var(--serif); letter-spacing: 1px; }
.node-item .count { font-size: 13px; color: var(--text-3); margin-top: 4px; }
.node-item .status {
  display: inline-block; margin-top: 12px; padding: 3px 14px; border-radius: 20px;
  font-size: 12px; font-weight: 600; color: var(--accent-lite);
  background: rgba(77, 141, 255, 0.12); border: 1px solid var(--line);
}
.node-note { margin-top: 28px; font-size: 13px; color: var(--text-3); }

.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-card {
  background: linear-gradient(165deg, var(--surface) 0%, #0a1626 100%);
  border-radius: var(--r); padding: 34px 24px; text-align: center;
  border: 1px solid var(--line);
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.stat-card:hover { transform: translateY(-4px); border-color: var(--line-strong); }
.stat-card .num { font-family: var(--serif); font-size: 36px; font-weight: 700; color: var(--accent-lite); margin-bottom: 10px; line-height: 1.2; }
.stat-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; color: var(--accent-pale); font-family: var(--sans); letter-spacing: 1px; }
.stat-card p { font-size: 14px; color: var(--text-2); line-height: 1.8; }

.doc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.doc-card {
  background: linear-gradient(165deg, var(--surface) 0%, #0a1626 100%);
  border-radius: var(--r); padding: 34px 28px;
  border: 1px solid var(--line);
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.doc-card:hover { transform: translateY(-4px); border-color: var(--line-strong); }
.doc-card .icon-box {
  width: 52px; height: 52px; border-radius: 14px;
  background: rgba(77, 141, 255, 0.12); border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center; font-size: 24px; margin-bottom: 16px;
}
.doc-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; color: var(--accent-pale); font-family: var(--sans); letter-spacing: 1px; }
.doc-card p { font-size: 14px; color: var(--text-2); line-height: 1.85; margin-bottom: 14px; }
.doc-card a { color: var(--accent-lite); font-weight: 600; font-size: 14px; }
.doc-card a:hover { text-decoration: underline; }

/* ---------- 19. FAQ ---------- */
.faq-list { max-width: 880px; margin: 0 auto; }
.faq-item {
  background: linear-gradient(165deg, var(--surface) 0%, #0a1626 100%);
  border-radius: 14px; margin-bottom: 14px;
  border: 1px solid var(--line);
  overflow: hidden; transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.faq-item:hover { border-color: var(--line-strong); box-shadow: var(--shadow-accent); }
.faq-item.active { border-color: var(--line-mid); }
.faq-question {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 28px; cursor: pointer; user-select: none;
  font-size: 17px; font-weight: 600; color: var(--accent-pale);
}
.faq-question .arrow { font-size: 18px; color: var(--accent-lite); transition: transform 0.3s; flex-shrink: 0; margin-left: 16px; }
.faq-item.active .faq-question .arrow { transform: rotate(180deg); }
.faq-answer {
  max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s;
  padding: 0 28px; background: rgba(2, 8, 20, 0.32);
}
.faq-item.active .faq-answer { max-height: 640px; padding: 4px 28px 24px; }
.faq-answer p { font-size: 15px; color: var(--text-2); line-height: 1.9; padding-top: 10px; }
.faq-answer .step-label { font-weight: 600; color: var(--accent-lite); margin-right: 6px; }
.faq-answer a { color: var(--accent-lite); text-decoration: underline; }
.faq-more { text-align: center; margin-top: 32px; }
.faq-more a {
  color: var(--accent-lite); font-weight: 600; font-size: 16px; letter-spacing: 1px;
  border-bottom: 1px solid var(--line-strong); padding-bottom: 4px; transition: all 0.25s;
}
.faq-more a:hover { color: var(--accent-pale); border-color: var(--accent); }

/* ---------- 20. 实拍配图（photo-frame） ---------- */
.photo-frame { position: relative; overflow: hidden; }
.photo-frame img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(0.32) saturate(0.85) hue-rotate(172deg) brightness(0.6) contrast(1.16);
  transition: transform 0.8s ease, filter 0.5s ease;
}
.photo-frame:hover img {
  transform: scale(1.05);
  filter: grayscale(0.06) saturate(1) hue-rotate(172deg) brightness(0.82) contrast(1.08);
}
.photo-frame::before {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: linear-gradient(200deg, rgba(77, 141, 255, 0.24) 0%, rgba(7, 15, 28, 0.18) 45%, rgba(7, 15, 28, 0.72) 100%);
}
.photo-frame .caption { z-index: 2; }

/* ---------- 21. 更新记录时间线 ---------- */
.tl-list { max-width: 880px; margin: 0 auto; position: relative; }
.tl-list::before {
  content: ""; position: absolute; left: 104px; top: 12px; bottom: 12px; width: 1px;
  background: var(--grad-line);
}
.tl-row { display: flex; gap: 28px; padding-bottom: 22px; position: relative; }
.tl-row:last-child { padding-bottom: 0; }
.tl-date {
  flex: 0 0 128px; text-align: right; font-family: var(--serif); font-size: 15px;
  color: var(--accent-lite); letter-spacing: 1px; padding-top: 20px; padding-right: 38px; white-space: nowrap;
}
.tl-row::after {
  content: ""; position: absolute; left: 99px; top: 26px;
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--accent);
  box-shadow: 0 0 0 4px rgba(77, 141, 255, 0.14);
}
.tl-body {
  flex: 1; min-width: 0;
  background: linear-gradient(165deg, var(--surface) 0%, #0a1626 100%);
  border: 1px solid var(--line); border-radius: var(--r);
  padding: 20px 24px; transition: border-color 0.3s ease, transform 0.3s ease;
}
.tl-row:hover .tl-body { border-color: var(--line-strong); transform: translateX(4px); }
.tl-body h3 { font-family: var(--sans); font-size: 17px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.tl-body p { font-size: 14px; color: var(--text-2); line-height: 1.8; }

/* ---------- 22. 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-text h1 { font-size: 42px; }
  .hero-inner { gap: 40px; }

  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials { grid-template-columns: repeat(2, 1fr); }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .nodes-grid { grid-template-columns: repeat(2, 1fr); }
  .doc-grid { grid-template-columns: 1fr; }
  .policy-grid { grid-template-columns: 1fr; }
  .support-grid { grid-template-columns: 1fr; }
  .download-grid { grid-template-columns: 1fr; }
  .install-steps { grid-template-columns: 1fr; }
  .scenes-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-art { opacity: .85; }
  .hero-mask {
    background:
      linear-gradient(90deg, rgba(11, 13, 18, .96) 0%, rgba(11, 13, 18, .9) 42%, rgba(11, 13, 18, .52) 72%, rgba(11, 13, 18, .26) 100%),
      linear-gradient(180deg, rgba(11, 13, 18, .55) 0%, rgba(11, 13, 18, 0) 22%, rgba(11, 13, 18, .72) 100%);
  }
}

@media (max-width: 768px) {
  .nav { display: none; }
  .menu-toggle { display: block; }
  .hero { padding: 52px 0 68px; }
  .hero-full { padding: 64px 0 78px; min-height: calc(100svh - 60px); }
  .hero-art { position: relative; left: auto; bottom: auto; width: 100%; height: auto; opacity: .7; }
  .hero-full { flex-direction: column; align-items: stretch; }
  .band-inner { flex-direction: column; align-items: flex-start; }
  .band h2 { font-size: 26px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat { padding: 14px 0; border-right: 0; }
  .hero-mask {
    background: linear-gradient(180deg, rgba(11, 13, 18, .95) 0%, rgba(11, 13, 18, .84) 42%, rgba(11, 13, 18, .94) 100%);
  }
  .hero-inner { flex-direction: column; gap: 40px; }
  .hero-text h1 { font-size: 33px; }
  .hero-text p { font-size: 16px; }
  .hero-buttons { margin-bottom: 34px; }



  .section { padding: 62px 0; }
  .section-title { margin-bottom: 42px; }
  .section-title h2 { font-size: 28px; }
  .section-title p { font-size: 15px; }
  .features-grid { grid-template-columns: 1fr; }
  .steps { flex-direction: column; align-items: center; }
  .testimonials { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .value-grid { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: 1fr; }
  .intro-wrap { grid-template-columns: 1fr; gap: 34px; }
  .intro-text h2 { font-size: 25px; }
  .nodes { padding: 40px 20px; }
  .nodes-grid { grid-template-columns: 1fr; }
  .feature-row { flex-direction: column !important; gap: 26px; margin-bottom: 50px; }
  .feature-text h3 { font-size: 24px; }
  .feature-visual { min-height: 210px; padding: 30px 24px; }
  .feature-visual .big-icon { font-size: 78px; }
  .scene-card { flex-direction: column; gap: 14px; }
  .compare-wrap { padding: 22px 18px; }
  .requirements { padding: 22px 18px; }
  .download-card { padding: 28px 24px; }
  .download-card .card-head { gap: 12px; }
  .download-card .platform-icon { width: 54px; height: 54px; font-size: 27px; }
  .download-card .card-info h3 { font-size: 19px; }
  .install-step { padding: 28px 22px; }
  .page-hero { padding: 64px 0; min-height: calc(100svh - 60px); }
  .page-hero::before { opacity: .28; background-position: 0 0, 64% center; }
  .hero-full .hero-inner { padding-left: 24px; padding-right: 24px; }
  .page-hero .container { padding-left: 24px; padding-right: 24px; }
  .page-hero h1 { font-size: 30px; max-width: 100%; }
  .page-hero p { font-size: 15px; max-width: 100%; }
  .page-hero h1,
  .page-hero p,
  .page-hero .hero-buttons,
  .page-hero .hero-eyebrow { margin-left: 0; }

  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .header-actions .btn-outline { display: none; }
  .header-actions .btn-primary { padding: 8px 18px; font-size: 14px; }




  .faq-question { font-size: 15px; padding: 18px 20px; }
  .faq-answer { padding: 0 20px; }
  .faq-item.active .faq-answer { padding: 4px 20px 20px; }
  .float-btn { width: 46px; height: 46px; font-size: 20px; right: 16px; }
  .tl-list::before { left: 5px; }
  .tl-row { flex-direction: column; gap: 10px; padding-bottom: 20px; }
  .tl-date { flex: none; text-align: left; padding-left: 24px; padding-top: 0; }
  .tl-row::after { left: 0; top: 6px; }
  .tl-body { padding: 16px 18px; }
  .tl-row:hover .tl-body { transform: none; }
}

@media (max-width: 480px) {
  .hero-text h1 { font-size: 29px; }
  .hero-buttons { flex-direction: column; align-items: center; }
  .hero-buttons .btn { width: 100%; max-width: 300px; }

}