/* ============ 基础 ============ */
:root {
  --bg: #f2f0e8;
  --bg-2: #eceadf;
  --card: #e9e7dc;
  --ink: #1f211c;
  --muted: #6b6f63;
  --line: #d8d5c8;
  --lime: #d7e88a;
  --red: #c8392b;
  --dark: #1f211c;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 720px; margin: 0 auto; padding: 0 20px; }

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 { line-height: 1.25; font-weight: 800; }

/* ============ 顶部细条 ============ */
.topbar {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 20px;
  background: var(--dark); color: var(--lime);
  font-size: 12px; letter-spacing: 2px;
}
.topbar-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--lime); display: inline-block; }
.topbar-text { opacity: .9; }

/* ============ 导航 ============ */
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 50;
}
.nav-brand { display: flex; align-items: center; gap: 12px; }
.logo-mark { display: inline-flex; }
.brand-text { display: flex; flex-direction: column; }
.brand-cn { font-size: 19px; font-weight: 800; letter-spacing: 1px; }
.brand-en { font-size: 10px; letter-spacing: 3px; color: var(--muted); }

.nav-toggle {
  width: 46px; height: 46px; background: transparent;
  border: 1.5px solid var(--ink); border-radius: 10px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px;
  cursor: pointer;
}
.nav-toggle span { width: 20px; height: 2px; background: var(--ink); display: block; }

.nav-menu { display: none; flex-direction: column; gap: 4px; width: 100%; padding: 10px 0; }
.nav-menu.open { display: flex; }
.nav-menu a { padding: 10px 4px; font-size: 15px; border-bottom: 1px dashed var(--line); }

@media (min-width: 720px) {
  .nav-toggle { display: none; }
  .nav-menu { display: flex; flex-direction: row; gap: 24px; width: auto; padding: 0; }
  .nav-menu a { border: 0; padding: 0; }
}

/* ============ 通用板块 ============ */
.section { padding: 56px 0; }
.section.dark { background: var(--dark); color: var(--bg); }

.eyebrow, .eyebrow-red, .eyebrow-lime {
  display: flex; align-items: center; gap: 10px;
  font-size: 13px; letter-spacing: 2px; font-weight: 700; margin-bottom: 20px;
}
.eyebrow-red { color: var(--red); }
.eyebrow-lime { color: var(--lime); }
.red-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--red); display: inline-block; }

.section-title { font-size: 32px; margin-bottom: 18px; }
.section-title .red { color: var(--red); }
.section-title .lime { color: var(--lime); }
.section-title.light { color: var(--bg); }
.section-desc { color: var(--muted); font-size: 15px; max-width: 560px; }
.section-desc.light { color: #b9bcac; }

/* ============ HERO ============ */
.hero { padding: 40px 0 30px; }
.pill {
  display: inline-block; background: var(--lime);
  padding: 10px 16px; border-radius: 6px;
  font-size: 15px; font-weight: 700; margin: 14px 0 26px;
}
.hero-title { font-size: 38px; margin-bottom: 22px; }
.underline-red { position: relative; white-space: nowrap; }
.underline-red::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -6px;
  height: 6px; background: var(--red); border-radius: 4px; opacity: .85;
}
.hero-desc { color: var(--muted); font-size: 15px; max-width: 560px; margin-bottom: 28px; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 22px; }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 15px 22px; border-radius: 10px; font-size: 15px; font-weight: 700;
}
.btn-dark { background: var(--ink); color: var(--bg); }
.btn-line { border: 1.5px solid var(--ink); color: var(--ink); }
.btn-lime { background: var(--lime); color: var(--ink); }
.arrow { font-weight: 400; }
.hero-tags { color: var(--muted); font-size: 13px; }

/* HERO 卡片 */
.hero-card { position: relative; margin-top: 40px; padding-left: 18px; }
.hero-card-side {
  position: absolute; right: 0; top: 24px; width: 55%; height: 80%;
  background: var(--lime); border-radius: 14px; z-index: 0;
}
.hero-card-inner {
  position: relative; z-index: 1;
  background: var(--dark); color: var(--bg);
  border-radius: 14px; padding: 24px;
}
.hero-card-head { display: flex; justify-content: space-between; font-size: 12px; letter-spacing: 1.5px; opacity: .8; margin-bottom: 26px; }
.hero-card-inner h3 { font-size: 28px; margin-bottom: 14px; }
.hero-card-inner .lime { color: var(--lime); }
.hero-card-sub { font-size: 13px; opacity: .85; }
.hero-card-en { font-size: 11px; letter-spacing: 2px; opacity: .6; margin-top: 18px; }
.trend { width: 100%; height: 90px; margin-top: 10px; }

/* ============ 服务卡片 ============ */
.service-list { display: flex; flex-direction: column; gap: 18px; margin-top: 30px; }
.service-card {
  background: var(--card); border-radius: 16px; padding: 24px;
}
.service-red { background: var(--red); color: #fff; }
.service-head { display: flex; justify-content: space-between; font-size: 12px; letter-spacing: 1.5px; margin-bottom: 22px; opacity: .9; }
.service-en { font-size: 12px; letter-spacing: 2px; opacity: .8; margin-bottom: 10px; }
.service-card h3 { font-size: 23px; margin-bottom: 12px; }
.service-desc { font-size: 14px; opacity: .85; }
.service-tags { margin-top: 16px; font-size: 13px; opacity: .7; }

/* ============ 理念 / LOOP ============ */
.link-lime { display: inline-flex; align-items: center; gap: 10px; color: var(--lime); font-weight: 700; margin-top: 24px; }
.loop { margin-top: 40px; border-top: 1px solid #3a3f34; }
.loop-head { display: flex; justify-content: space-between; font-size: 12px; letter-spacing: 1.5px; opacity: .7; padding: 18px 0; }
.loop-item { display: flex; gap: 18px; padding: 20px 0; border-bottom: 1px solid #3a3f34; }
.loop-no { color: var(--lime); font-weight: 800; font-size: 16px; min-width: 34px; }
.loop-item h4 { font-size: 18px; margin-bottom: 6px; }
.loop-item p { font-size: 14px; color: #b9bcac; }

.dark-banner {
  display: flex; align-items: center; gap: 16px;
  background: var(--lime); color: var(--ink);
  border-radius: 14px; padding: 22px; margin-top: 30px;
}
.dark-banner p { font-weight: 700; font-size: 17px; }
.flower-icon { display: inline-flex; flex-shrink: 0; }
.flower-icon.big { margin-left: auto; }

/* ============ 推广目标 ============ */
.obj-list { display: flex; flex-direction: column; gap: 22px; margin-top: 30px; }
.obj-item { display: flex; gap: 16px; align-items: flex-start; }
.obj-no { color: var(--red); font-weight: 800; font-size: 14px; min-width: 24px; padding-top: 4px; }
.obj-icon {
  width: 56px; height: 56px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.lime-bg { background: var(--lime); }
.gray-bg { background: var(--card); }
.obj-item h3 { font-size: 19px; margin-bottom: 6px; }
.obj-item p { font-size: 14px; color: var(--muted); }

.obj-note {
  margin-top: 30px; background: var(--card); border-radius: 16px; padding: 22px;
  display: flex; flex-direction: column; gap: 12px;
}
.obj-note p { font-size: 14px; }
.link-dark { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; }

/* ============ 流程 ============ */
.step-grid { display: grid; grid-template-columns: 1fr; gap: 16px; margin-top: 26px; }
@media (min-width: 600px) { .step-grid { grid-template-columns: 1fr 1fr; } }
.step-card { background: var(--card); border-radius: 16px; padding: 22px; }
.step-label { font-size: 12px; letter-spacing: 1.5px; color: var(--red); font-weight: 700; }
.step-no { font-size: 44px; font-weight: 800; color: rgba(31,33,28,.1); line-height: 1; margin: 8px 0; }
.step-card h3 { font-size: 18px; margin-bottom: 8px; }
.step-card p { font-size: 14px; color: var(--muted); }

/* ============ 红色 CTA ============ */
.cta-red { background: var(--red); color: #fff; padding: 50px 0; position: relative; overflow: hidden; }
.cta-red h2 { font-size: 34px; margin-bottom: 18px; }
.cta-red h2 .lime { color: var(--lime); }
.cta-red p { font-size: 13px; letter-spacing: 2px; opacity: .85; }
.cta-red .flower-icon { position: absolute; right: 30px; bottom: 30px; }

/* ============ 关于 ============ */
.about-company { font-size: 19px; margin: 18px 0 14px; }

/* ============ FAQ ============ */
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary {
  display: flex; justify-content: space-between; align-items: center;
  padding: 20px 0; font-size: 16px; font-weight: 700; cursor: pointer; list-style: none;
}
.faq-plus { font-size: 22px; font-weight: 400; }
.faq-item p { padding: 0 0 20px; color: var(--muted); font-size: 14px; max-width: 560px; }

/* ============ 联系 ============ */
.contact-block { margin-top: 30px; border-top: 1px solid #3a3f34; padding-top: 28px; }
.contact-label { color: var(--lime); font-size: 13px; letter-spacing: 2px; font-weight: 700; margin-bottom: 14px; }
.contact-phone { display: block; font-size: 38px; font-weight: 800; letter-spacing: 2px; margin-bottom: 22px; }
.contact-note { margin-top: 16px; font-size: 12px; color: #8f927f; }

/* ============ 页脚 ============ */
.footer { background: var(--bg); padding: 44px 0 30px; border-top: 1px solid var(--line); }
.footer-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.footer-company { font-weight: 700; margin-bottom: 8px; }
.footer-biz { color: var(--muted); font-size: 14px; margin-bottom: 26px; }
.footer-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 30px; }
.footer-col h4 { font-size: 15px; margin-bottom: 12px; }
.footer-col a, .footer-col span { display: block; font-size: 13px; color: var(--muted); padding: 5px 0; }
.footer-bottom {
  display: flex; flex-wrap: wrap; gap: 14px; align-items: center;
  border-top: 1px solid var(--line); padding-top: 20px; font-size: 13px; color: var(--muted);
}
.footer-icp { color: var(--muted); }
.footer-top { margin-left: auto; }
.footer-disclaimer { margin-top: 16px; font-size: 12px; color: #8a8d80; line-height: 1.7; }