/* 杭州智慧圈科技有限公司官网样式：全部自写，不依赖任何第三方库或外部字体 */
:root {
  --ink: #1c2a35;
  --muted: #586a78;
  --brand: #2c6e8c;
  --brand-dark: #1d4a61;
  --brand-soft: #e6f1f5;
  --warm: #c9824f;
  --bg: #f5f8fa;
  --card: #ffffff;
  --line: #dde6ec;
  --footer: #15232d;
  --radius: 14px;
  --shadow: 0 6px 24px rgba(28, 42, 53, 0.07);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans CJK SC", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.75;
}

img, svg { max-width: 100%; }

a { color: var(--brand); }
a:hover { color: var(--brand-dark); }

h1, h2, h3 { line-height: 1.35; margin: 0 0 0.6em; }
h2 { font-size: 1.7rem; }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 22px; }

.skip {
  position: absolute; left: -999px; top: 0;
  background: var(--brand-dark); color: #fff; padding: 8px 14px; z-index: 100;
}
.skip:focus { left: 8px; top: 8px; }

/* 页头 */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; min-height: 68px;
}
.brand { display: flex; flex-direction: column; text-decoration: none; line-height: 1.25; }
.brand-cn { font-size: 1.08rem; font-weight: 700; color: var(--ink); letter-spacing: 0.02em; }
.brand-en { font-size: 0.7rem; color: var(--muted); letter-spacing: 0.01em; }

.site-nav { display: flex; align-items: center; gap: 4px; }
.site-nav a {
  padding: 8px 12px; border-radius: 8px;
  color: var(--ink); text-decoration: none; font-size: 0.95rem; white-space: nowrap;
}
.site-nav a:hover { background: var(--brand-soft); color: var(--brand-dark); }
.site-nav a[aria-current="page"] { color: var(--brand); font-weight: 600; }

.nav-toggle {
  display: none; width: 44px; height: 44px; padding: 10px;
  background: none; border: 1px solid var(--line); border-radius: 10px; cursor: pointer;
}
.nav-toggle span { display: block; height: 2px; margin: 5px 0; background: var(--ink); border-radius: 2px; }

/* 首屏 */
.hero {
  position: relative; overflow: hidden; color: #fff;
  background: linear-gradient(135deg, #1d4a61 0%, #2c6e8c 48%, #6fb0bd 100%);
}
.hero-inner { position: relative; z-index: 1; padding: 96px 0 104px; max-width: 720px; }
.hero-rings {
  position: absolute; right: -140px; top: 50%; width: 640px; height: 640px;
  transform: translateY(-50%); opacity: 0.55; pointer-events: none;
}
.eyebrow {
  display: inline-block; margin-bottom: 18px; padding: 4px 14px;
  border: 1px solid rgba(255, 255, 255, 0.45); border-radius: 999px;
  font-size: 0.85rem; letter-spacing: 0.06em;
}
.hero h1 { font-size: 2.6rem; letter-spacing: 0.03em; margin-bottom: 0.25em; }
.hero-en { font-size: 1.02rem; opacity: 0.88; margin-bottom: 1.4em; }
.hero-lead { font-size: 1.22rem; line-height: 1.7; margin-bottom: 1.8em; }

.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-block; padding: 12px 26px; border-radius: 999px;
  font-weight: 600; font-size: 0.98rem; text-decoration: none;
  border: 1.5px solid transparent;
}
.btn-primary { background: #fff; color: var(--brand-dark); }
.btn-primary:hover { background: var(--brand-soft); color: var(--brand-dark); }
.btn-ghost { border-color: rgba(255, 255, 255, 0.7); color: #fff; }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.14); color: #fff; }
.btn-solid { background: var(--brand); color: #fff; }
.btn-solid:hover { background: var(--brand-dark); color: #fff; }

/* 内页标题条 */
.page-hero {
  color: #fff; padding: 64px 0 56px;
  background: linear-gradient(135deg, #1d4a61 0%, #2c6e8c 60%, #5c9fb0 100%);
}
.page-hero h1 { font-size: 2.1rem; margin-bottom: 0.3em; }
.page-hero p { margin: 0; opacity: 0.9; max-width: 640px; }

/* 板块 */
.section { padding: 72px 0; }
.section-alt { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 680px; margin-bottom: 36px; }
.section-head p { color: var(--muted); margin: 0; }
.kicker {
  display: block; margin-bottom: 8px; color: var(--warm);
  font-size: 0.85rem; font-weight: 700; letter-spacing: 0.12em;
}

.grid { display: grid; gap: 22px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 26px; box-shadow: var(--shadow);
}
.card p { color: var(--muted); margin: 0; }
.card p + p { margin-top: 0.8em; }
.section-alt .card { background: var(--bg); box-shadow: none; }
.icon {
  width: 52px; height: 52px; margin-bottom: 18px; padding: 12px;
  border-radius: 14px; background: var(--brand-soft); color: var(--brand);
}
.icon svg { display: block; width: 100%; height: 100%; }

.scene { padding: 22px 22px; }
.scene h3 { font-size: 1.02rem; margin-bottom: 0.35em; }
.scene p { font-size: 0.95rem; }

.steps { counter-reset: step; }
.step { position: relative; padding-left: 62px; }
.step::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 0; top: 0; width: 42px; height: 42px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%; background: var(--brand); color: #fff; font-weight: 700;
}
.step p { color: var(--muted); margin: 0; }
.step + .step { margin-top: 26px; }

.notice {
  border-left: 4px solid var(--warm); background: #fbf4ee;
  padding: 18px 22px; border-radius: 0 var(--radius) var(--radius) 0;
}
.notice p { margin: 0; color: #5d4a3c; }
.notice p + p { margin-top: 0.6em; }

.badge {
  display: inline-block; padding: 3px 12px; border-radius: 999px;
  background: #fbf4ee; color: var(--warm); font-size: 0.82rem; font-weight: 700;
  border: 1px solid #efd9c6;
}

.cta {
  display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap;
  background: var(--brand-dark); color: #fff; border-radius: 20px; padding: 40px 40px;
}
.cta h2 { margin-bottom: 0.3em; }
.cta p { margin: 0; opacity: 0.88; }

/* 信息表 */
.info { margin: 0; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; overflow: hidden; }
.info > div { display: grid; grid-template-columns: 190px 1fr; border-top: 1px solid var(--line); }
.info > div:first-child { border-top: 0; }
.info dt { padding: 16px 20px; background: var(--bg); color: var(--muted); font-size: 0.93rem; }
.info dd { margin: 0; padding: 16px 20px; word-break: break-word; }

/* 长文（隐私政策） */
.prose { max-width: 780px; }
.prose h2 { font-size: 1.3rem; margin-top: 2em; }
.prose ul { padding-left: 1.3em; margin: 0 0 1em; }
.prose li { margin-bottom: 0.4em; }
.prose .meta { color: var(--muted); font-size: 0.93rem; }

/* 页脚 */
.site-footer { background: var(--footer); color: #c5d2da; padding: 52px 0 36px; font-size: 0.93rem; }
.footer-inner { display: grid; gap: 22px; }
.footer-name { margin: 0; color: #fff; font-size: 1.1rem; font-weight: 700; }
.footer-name-en { margin: 2px 0 0; color: #9fb2be; }
.footer-info { margin: 0; display: grid; gap: 8px; }
.footer-info > div { display: grid; grid-template-columns: 110px 1fr; gap: 8px; }
.footer-info dt { color: #8499a6; }
.footer-info dd { margin: 0; word-break: break-word; }
.footer-legal { margin: 0; padding-top: 20px; border-top: 1px solid rgba(255, 255, 255, 0.12); color: #9fb2be; }
.footer-legal a { color: #c5d2da; }
.footer-legal .sep { margin: 0 8px; }

/* 手机与平板 */
@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .site-nav {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line); padding: 8px 14px 14px;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 13px 10px; font-size: 1rem; border-bottom: 1px solid var(--line); border-radius: 0; }
  .site-nav a:last-child { border-bottom: 0; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  h2 { font-size: 1.4rem; }
  .brand-cn { font-size: 1rem; }
  .brand-en { font-size: 0.62rem; }
  .hero-inner { padding: 60px 0 68px; }
  .hero h1 { font-size: 1.75rem; }
  .hero-en { font-size: 0.9rem; }
  .hero-lead { font-size: 1.05rem; }
  .hero-rings { width: 420px; height: 420px; right: -200px; opacity: 0.35; }
  .page-hero { padding: 44px 0 38px; }
  .page-hero h1 { font-size: 1.6rem; }
  .section { padding: 48px 0; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .card { padding: 22px 20px; }
  .cta { padding: 28px 24px; }
  .info > div { grid-template-columns: 1fr; }
  .info dt { padding: 10px 16px 4px; background: none; font-size: 0.85rem; }
  .info dd { padding: 0 16px 12px; }
  .footer-info > div { grid-template-columns: 1fr; gap: 0; }
  .footer-legal .sep { display: none; }
  .footer-legal a { display: block; margin-top: 6px; }
}