@charset "UTF-8";
/* ==========================================================================
   Boss圈儿 官网样式
   主色 #007FFF（品牌蓝） / 强调 #E80615（APP 图标红） / 辅助 #B27A47（紫金山金）
   ========================================================================== */

:root {
  --blue: #007FFF;
  --blue-600: #0069D9;
  --blue-050: #EAF3FF;
  --indigo: #0B1F3A;
  --ink: #0E1A2B;
  --ink-2: #3B4A61;
  --muted: #6A7A92;
  --line: #E4EBF5;
  --line-soft: #EEF3FA;
  --bg: #FFFFFF;
  --bg-soft: #F6F9FE;
  --red: #E80615;
  --gold: #B27A47;

  --radius-sm: 12px;
  --radius: 18px;
  --radius-lg: 24px;

  --shadow-xs: 0 1px 2px rgba(16, 32, 56, .05);
  --shadow-sm: 0 2px 6px rgba(16, 32, 56, .04), 0 10px 30px rgba(16, 32, 56, .06);
  --shadow-lg: 0 30px 70px rgba(0, 80, 180, .14);

  --maxw: 1120px;
  --header-h: 72px;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "HarmonyOS Sans SC", "Hiragino Sans GB", "Microsoft YaHei",
          "Helvetica Neue", Arial, sans-serif;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink-2);
  background: var(--bg);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  color: var(--ink);
  margin: 0;
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: -0.01em;
}

p { margin: 0; }
ul, dl, dd { margin: 0; padding: 0; }
li { list-style: none; }

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

a {
  color: var(--blue);
  text-decoration: none;
  transition: color .2s ease;
}
a:hover { color: var(--blue-600); }

button { font-family: inherit; }

::selection { background: rgba(0, 127, 255, .16); color: var(--ink); }

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: 6px;
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 24px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--blue);
  color: #fff;
  border-radius: 0 0 10px 10px;
}
.skip-link:focus { top: 0; color: #fff; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 50px;
  padding: 0 30px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .01em;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .22s ease,
              background-color .2s ease, border-color .2s ease, color .2s ease;
  white-space: nowrap;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(180deg, #1A8CFF 0%, var(--blue) 100%);
  box-shadow: 0 8px 20px rgba(0, 127, 255, .26);
}
.btn-primary:hover {
  color: #fff;
  background: linear-gradient(180deg, #0C82FF 0%, var(--blue-600) 100%);
  transform: translateY(-1px);
  box-shadow: 0 12px 26px rgba(0, 127, 255, .32);
}
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  color: var(--ink);
  background: #fff;
  border-color: var(--line);
  box-shadow: var(--shadow-xs);
}
.btn-ghost:hover {
  color: var(--blue);
  border-color: #BBD9FF;
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.btn-sm { height: 40px; padding: 0 20px; font-size: 14px; }

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 15px;
}
.text-link span { transition: transform .2s ease; }
.text-link:hover span { transform: translateX(3px); }

/* ---------- 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, box-shadow .25s ease, background-color .25s ease;
}
.site-header.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 4px 20px rgba(16, 32, 56, .04);
  background: rgba(255, 255, 255, .94);
}

.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}
.brand-logo { height: 30px; width: auto; }
.brand-divider {
  width: 1px;
  height: 20px;
  background: var(--line);
}
.brand-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: .01em;
}
.brand:hover .brand-name { color: var(--blue); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
  font-size: 15px;
}
.nav-links a:not(.btn) {
  color: var(--ink-2);
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}
.nav-links a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 2px;
  background: var(--blue);
  border-radius: 2px;
  transition: right .25s ease;
}
.nav-links a:not(.btn):hover { color: var(--ink); }
.nav-links a:not(.btn):hover::after { right: 0; }
.nav-links .btn { margin-left: 4px; }

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}
.nav-toggle span {
  display: block;
  width: 16px;
  height: 1.5px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

/* ---------- 首屏 ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 92px 0 104px;
  background: linear-gradient(180deg, #FBFDFF 0%, #FFFFFF 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(720px 420px at 74% 18%, rgba(0, 127, 255, .10), transparent 68%),
    radial-gradient(520px 320px at 6% 4%, rgba(0, 127, 255, .06), transparent 70%),
    radial-gradient(circle at center, rgba(16, 32, 56, .07) 1px, transparent 1px);
  background-size: auto, auto, 26px 26px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, .35) 62%, transparent 92%);
  mask-image: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, .35) 62%, transparent 92%);
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.04fr .96fr;
  align-items: center;
  gap: 56px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 32px;
  padding: 0 14px 0 12px;
  border-radius: 999px;
  background: rgba(0, 127, 255, .07);
  border: 1px solid rgba(0, 127, 255, .16);
  color: var(--blue-600);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
}
.chip::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 0 3px rgba(0, 127, 255, .15);
}

.hero-title {
  margin-top: 22px;
  font-size: clamp(44px, 5.6vw, 64px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.08;
  color: var(--ink);
}

.hero-subtitle {
  margin-top: 14px;
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.hero-desc {
  margin-top: 18px;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

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

.download-slot { margin-top: 20px; }

.hero-meta {
  margin-top: 30px;
  font-size: 13px;
  color: #93A1B5;
  letter-spacing: .01em;
}

/* 首屏图标 */
.hero-visual {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 30px;
  min-height: 440px;
}

.icon-wrap {
  position: relative;
  display: grid;
  place-items: center;
}

.icon-stage {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 400px;
  height: 400px;
  transform: translate(-50%, -50%);
  pointer-events: none;
}
.ring {
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 50%;
  border: 1px solid rgba(0, 127, 255, .13);
  transform: translate(-50%, -50%);
}
.ring-1 { width: 320px; height: 320px; }
.ring-2 { width: 400px; height: 400px; border-style: dashed; border-color: rgba(0, 127, 255, .10); }
.icon-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 300px;
  height: 300px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(0, 127, 255, .16), transparent 66%);
  filter: blur(18px);
}

.icon-card {
  position: relative;
  width: 210px;
  height: 210px;
  border-radius: 46px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 24px 60px rgba(16, 32, 56, .16), 0 2px 6px rgba(16, 32, 56, .06);
  outline: 1px solid rgba(16, 32, 56, .05);
  outline-offset: -1px;
}
.icon-card img { width: 100%; height: 100%; object-fit: cover; }

.icon-caption {
  position: relative;
  margin: 0;
  font-size: 13px;
  color: #8A98AD;
  letter-spacing: .06em;
}

/* ---------- 区块通用 ---------- */
.section { padding: 96px 0; }
.section-soft { background: var(--bg-soft); }

.section-head {
  max-width: 640px;
  margin-bottom: 52px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--blue);
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--blue);
}
.section-head h2 {
  margin-top: 16px;
  font-size: clamp(26px, 3.2vw, 36px);
  letter-spacing: -0.02em;
}
.section-head p {
  margin-top: 14px;
  color: var(--muted);
  font-size: 16px;
}

/* ---------- 功能卡片 ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  padding: 32px 28px 30px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform .22s ease, box-shadow .25s ease, border-color .25s ease;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: #CFE2FF;
  box-shadow: 0 16px 36px rgba(16, 32, 56, .07);
}

.icon-badge {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 13px;
  background: linear-gradient(180deg, #F4F9FF 0%, #E7F1FF 100%);
  border: 1px solid rgba(0, 127, 255, .12);
  color: var(--blue);
}
.icon-badge svg { width: 22px; height: 22px; }

.feature-card h3 {
  margin-top: 20px;
  font-size: 18px;
  letter-spacing: 0;
}
.feature-card p {
  margin-top: 10px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 关于 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 72px;
  align-items: start;
}

.about-copy h2 {
  margin-top: 16px;
  font-size: clamp(28px, 3.4vw, 40px);
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.about-body {
  padding-top: 30px;
  border-top: 1px solid var(--line);
}
.about-body p {
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.95;
}
.about-body p + p { margin-top: 18px; }
.about-body .text-link { margin-top: 28px; }

/* ---------- 联系 ---------- */
.contact-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 56px;
  box-shadow: var(--shadow-sm);
}
.contact-card h2 {
  margin-top: 16px;
  font-size: clamp(24px, 2.8vw, 32px);
  letter-spacing: -0.02em;
}
.contact-desc {
  margin-top: 14px;
  color: var(--muted);
  font-size: 15px;
  max-width: 26em;
}

.contact-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 15px;
  color: var(--ink);
}
.contact-list li:first-child { padding-top: 0; }
.contact-list li:last-child { border-bottom: 0; padding-bottom: 0; }
.contact-label {
  flex: none;
  color: var(--muted);
  font-size: 14px;
}

.contact-multi {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
  text-align: right;
  line-height: 1.7;
}
.contact-multi a { font-variant-numeric: tabular-nums; }

/* ---------- 页脚 ---------- */
.site-footer {
  background: #F7F9FC;
  border-top: 1px solid var(--line);
  padding-top: 60px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.7fr .8fr 1fr;
  gap: 40px;
  padding-bottom: 46px;
}

.footer-brand img {
  width: auto;
  height: 68px;
  object-fit: contain;
  margin-bottom: 16px;
}
.footer-company {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}
.footer-slogan {
  margin-top: 6px;
  font-size: 13.5px;
  color: var(--muted);
}

.footer-nav, .footer-legal {
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 14px;
}
.footer-top h4 {
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: .08em;
  margin-bottom: 4px;
}
.footer-nav a, .footer-legal a { color: var(--muted); }
.footer-nav a:hover, .footer-legal a:hover { color: var(--blue); }

.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 22px 0 30px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 13px;
  color: #6E7C90;
}
.compliance {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  line-height: 1.9;
}
.compliance span { position: relative; }
.compliance span + span::before {
  content: "";
  position: absolute;
  left: -9px;
  top: 50%;
  width: 1px;
  height: 11px;
  transform: translateY(-50%);
  background: #D9E2EE;
}
.compliance a { color: #8391A6; text-decoration: underline; text-underline-offset: 2px; }
.compliance a:hover { color: var(--blue); }
.copyright { color: #9AA7B8; }

/* ---------- 文档页（隐私政策 / 用户协议） ---------- */
.doc-hero {
  padding: 64px 0 40px;
  background: linear-gradient(180deg, #FBFDFF, #fff);
  border-bottom: 1px solid var(--line-soft);
}
.doc-hero h1 {
  font-size: clamp(28px, 3.4vw, 38px);
  letter-spacing: -0.02em;
}
.doc-hero p {
  margin-top: 12px;
  color: var(--muted);
  font-size: 14px;
}

.doc-wrap {
  max-width: 820px;
  padding: 56px 24px 96px;
  margin: 0 auto;
}
.doc h2 {
  font-size: 19px;
  margin: 40px 0 12px;
  letter-spacing: 0;
}
.doc h2:first-child { margin-top: 0; }
.doc h3 {
  font-size: 15.5px;
  margin: 22px 0 8px;
  color: var(--ink);
}
.doc p, .doc li {
  font-size: 15px;
  line-height: 1.95;
  color: var(--ink-2);
}
.doc p + p { margin-top: 12px; }
.doc ul { margin: 10px 0 0; }
.doc ul li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 6px;
}
.doc ul li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 12px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #C3D3E6;
}
.doc strong { color: var(--ink); font-weight: 600; }
.doc .note {
  margin-top: 28px;
  padding: 18px 22px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--muted);
}
.doc .back-link { margin-top: 40px; display: inline-flex; }

/* ---------- 滚动进入动画 ---------- */
.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .6s cubic-bezier(.22, .61, .36, 1),
              transform .6s cubic-bezier(.22, .61, .36, 1);
}
.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-inner { gap: 32px; }
  .hero-visual { min-height: 380px; }
  .icon-stage { width: 340px; height: 340px; }
  .ring-1 { width: 270px; height: 270px; }
  .ring-2 { width: 340px; height: 340px; }
  .icon-card { width: 180px; height: 180px; border-radius: 40px; }
  .feature-grid { gap: 16px; }
  .feature-card { padding: 28px 24px; }
  .about-grid { gap: 40px; }
  .contact-card { padding: 44px; gap: 36px; }
}

@media (max-width: 860px) {
  :root { --header-h: 64px; }

  .nav-toggle { display: inline-flex; }

  .nav-links {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 24px 22px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 18px 32px rgba(16, 32, 56, .08);
  }
  .nav-links.is-open { display: flex; }
  .nav-links a:not(.btn) { padding: 14px 0; font-size: 16px; border-bottom: 1px solid var(--line-soft); }
  .nav-links a:not(.btn)::after { display: none; }
  .nav-links .btn { margin: 16px 0 0; width: 100%; }

  .hero { padding: 56px 0 72px; }
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-copy { order: 1; }
  .hero-visual { order: 2; min-height: 300px; }
  .hero-desc { font-size: 15.5px; }
  .hero-actions { margin-top: 28px; }
  .hero-actions .btn { flex: 1 1 auto; min-width: 140px; }

  .icon-stage { width: 280px; height: 280px; }
  .ring-1 { width: 226px; height: 226px; }
  .ring-2 { width: 280px; height: 280px; }
  .icon-card { width: 150px; height: 150px; border-radius: 34px; }

  .section { padding: 64px 0; }
  .section-head { margin-bottom: 36px; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 28px; }
  .about-body { border-top: 0; padding-top: 0; }
  .contact-card { grid-template-columns: 1fr; gap: 32px; padding: 34px 28px; }

  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .compliance { flex-direction: column; gap: 2px; }
  .compliance span + span::before { display: none; }
  .doc-wrap { padding: 40px 24px 72px; }
}

@media (max-width: 560px) {
  .container { padding: 0 20px; }
  .brand-logo { height: 26px; }
  .brand-divider { display: none; }
  .brand-name { font-size: 16px; }

  .hero-title { font-size: 40px; }
  .hero-subtitle { font-size: 19px; }
  .btn { height: 48px; padding: 0 24px; font-size: 15px; }
  .btn-sm { height: 38px; padding: 0 18px; }

  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { padding: 26px 22px; }
  .contact-list li { flex-direction: column; gap: 2px; }
  .contact-multi { align-items: flex-start; text-align: left; }
  .footer-top { grid-template-columns: 1fr; }
}