/* —— 自托管衬线字体（GB2312 一级常用字子集，改文案无需重新生成；生成方法见 DEPLOYMENT.md 附录）—— */
@font-face {
  font-family: "Noto Serif SC";
  src: url("fonts/NotoSerifSC-VF.subset.woff2") format("woff2");
  font-weight: 200 900;
  font-style: normal;
  font-display: swap;
}

/* =========================================================
   Design Tokens & Shared Styles  ——  发米牛AI透明整装
   与画布设计严格 1:1 对齐
   ========================================================= */

:root {
  /* Brand */
  --brand-primary: #5C9D90;
  --brand-light:   #7FAFA3;
  --brand-dark:    #3E7568;

  /* Surfaces */
  --bg-page:        #FAFAF8;
  --bg-warm:        #F2EFEB;
  --bg-dark:        #0F1A1B;
  --bg-dark-2:      #1A2C2D;
  --bg-card:        #FFFFFF;

  /* Text */
  --text-1:         #181818;
  --text-2:         #404040;
  --text-3:         #5C5C5C;
  --text-muted:     #8A8A8A;
  --text-on-dark-1: #FAFAF8;
  --text-on-dark-2: #9AAAA8;
  --text-on-dark-3: #5C5C5C;

  /* Hairlines */
  --hairline:       #E5E5E5;
  --hairline-warm:  #C9C3BA;
  --hairline-dark:  #2A3A39;

  /* Type */
  --font-serif:     "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  --font-sans:      "PingFang SC", "Microsoft YaHei", sans-serif;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg-page);
  color: var(--text-1);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

/* ---------- container ---------- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 80px;
  width: 100%;
}
.wide-container {
  max-width: 1440px;
  margin: 0 auto;
  width: 100%;
}

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  background: var(--bg-page);
  border-bottom: 1px solid var(--hairline);
  transition: border-color .25s ease, background .25s ease;
}
.site-header.is-scrolled { border-bottom-color: var(--hairline-warm); }
.site-header.is-scrolled + .page-hero { padding-top: 96px; }

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
  padding: 0 80px;
  max-width: 1440px;
  margin: 0 auto;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 14px;
}
.brand-logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 4px;
  background: #FFFFFF;
  border: 1px solid #EBEBEB;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 22px;
  color: var(--brand-primary);
}
.brand-logo-word {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--text-1);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 36px;
}
.site-nav a {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-2);
  transition: color .2s ease;
}
.site-nav a:hover, .site-nav a.is-active { color: var(--text-1); }

.site-header-right {
  display: flex;
  align-items: center;
  gap: 24px;
}
.header-cta {
  display: inline-flex;
  align-items: center;
  padding: 12px 22px;
  border-radius: 4px;
  background: var(--brand-primary);
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 500;
  transition: background .2s ease;
}
.header-cta:hover { background: var(--brand-dark); }

/* ---------- buttons ---------- */
.btn-text {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--brand-primary);
  font-size: 16px;
  font-weight: 500;
  padding: 18px 4px;
  transition: color .2s ease;
}
.btn-text:hover { color: var(--brand-dark); }

/* ---------- page hero ---------- */
.page-hero {
  padding: 140px 80px 96px;
  background: var(--bg-page);
}
.page-hero-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 96px;
  max-width: 1280px;
  margin: 0 auto;
  align-items: start;
}
.page-hero-eyebrow {
  font-size: 12px;
  font-weight: 600;
  color: var(--brand-primary);
  letter-spacing: 3px;
  text-transform: none;
  margin-bottom: 24px;
}
.page-hero-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 56px;
  line-height: 1.18;
  letter-spacing: -1px;
  color: var(--text-1);
  margin: 0 0 24px;
}
.page-hero-subtitle {
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-2);
  margin: 0 0 28px;
}
.page-hero-meta {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 1px;
}

/* ---------- section ---------- */
.section {
  padding: 100px 80px;
}
.section-warm { background: var(--bg-warm); }
.section-dark { background: var(--bg-dark); color: var(--text-on-dark-1); }

.section-title-block {
  max-width: 800px;
  margin-bottom: 64px;
}
.section-eyebrow {
  font-size: 12px;
  font-weight: 600;
  color: var(--brand-primary);
  letter-spacing: 3px;
  margin-bottom: 18px;
}
.section-dark .section-eyebrow { color: var(--brand-light); }
.section-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 40px;
  line-height: 1.25;
  letter-spacing: -0.5px;
  color: var(--text-1);
  margin: 0 0 18px;
}
.section-dark .section-title { color: var(--text-on-dark-1); }
.section-subtitle {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-2);
  margin: 0;
}
.section-dark .section-subtitle { color: var(--text-on-dark-2); }

/* ---------- form card ---------- */
.form-section { padding: 100px 80px 140px; background: var(--bg-warm); }
.form-card {
  background: var(--bg-card);
  border: 1px solid var(--hairline);
  border-radius: 8px;
  padding: 56px 64px;
  max-width: 1080px;
  margin: 0 auto;
}

/* ---------- value cards ---------- */
.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  max-width: 1280px;
  margin: 0 auto;
}
.value-card {
  background: var(--bg-card);
  border: 1px solid var(--hairline);
  border-radius: 8px;
  padding: 36px 30px;
}
.value-card-num {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: 48px;
  color: var(--brand-primary);
  letter-spacing: -1px;
  line-height: 1;
  margin-bottom: 18px;
}
.value-card-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 18px;
  color: var(--text-1);
  margin: 0 0 10px;
  letter-spacing: -0.2px;
}
.value-card-text {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.7;
  margin: 0;
}

/* ---------- trust strip ---------- */
.trust-strip {
  max-width: 1080px;
  margin: 64px auto 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 36px;
  padding: 36px 0 0;
  border-top: 1px solid var(--hairline);
}
.trust-strip-item { text-align: center; }
.trust-strip-num {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: 32px;
  color: var(--brand-primary);
  letter-spacing: -1px;
  display: block;
  line-height: 1;
}
.trust-strip-unit {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.5px;
  margin-left: 5px;
}
.trust-strip-label {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 1.5px;
  margin-top: 8px;
  display: block;
}

/* ---------- footer ---------- */
.site-footer {
  background: var(--bg-dark);
  color: var(--text-on-dark-2);
  padding: 80px 80px 40px;
}
.site-footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 80px;
}
.site-footer h4 {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-on-dark-1);
  letter-spacing: 2px;
  margin: 0 0 16px;
}
.footer-tagline {
  color: var(--text-on-dark-2);
  font-size: 13px;
  line-height: 1.6;
  margin-top: 18px;
  max-width: 340px;
}
.footer-tagline span { white-space: nowrap; }
@media (min-width: 1200px) {
  .site-footer-inner { grid-template-columns: auto 1fr; }
  .footer-tagline { max-width: none; }
}
.site-footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.site-footer-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.site-footer-nav a {
  color: var(--text-on-dark-2);
  font-size: 13px;
  transition: color .2s ease;
}
.site-footer-nav a:hover, .site-footer-nav a.is-active { color: var(--text-on-dark-1); }
.site-footer-nav .is-phone { color: var(--text-on-dark-1); }

.site-footer-bottom {
  max-width: 1280px;
  margin: 56px auto 0;
  padding-top: 32px;
  border-top: 1px solid var(--hairline-dark);
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-on-dark-3);
  letter-spacing: 1px;
}
.site-footer-bottom a { color: var(--text-on-dark-3); margin-left: 24px; }
.site-footer-bottom a:hover { color: var(--text-on-dark-2); }
.site-footer-bottom a:first-of-type { margin-left: 0; }

/* ---------- responsive ---------- */
@media (max-width: 1024px) {
  .container, .site-header-inner, .site-footer, .section,
  .form-section, .page-hero, .form-card { padding-left: 40px; padding-right: 40px; }
  .page-hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .page-hero-title { font-size: 44px; }
  .value-grid { grid-template-columns: 1fr 1fr; }
  .trust-strip { grid-template-columns: 1fr 1fr; }
  .site-footer-inner { grid-template-columns: 1fr; gap: 40px; }
  .site-footer-nav { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .container, .site-header-inner, .site-footer, .section,
  .form-section, .page-hero, .form-card { padding-left: 24px; padding-right: 24px; }
  .site-header-inner { height: 72px; }
  .site-nav { display: none; }
  .page-hero { padding-top: 80px; }
  .page-hero-title { font-size: 36px; }
  .hero-role-card .hero-role-name { font-size: 40px; }
  .brand-logo-word { font-size: 13px; white-space: nowrap; }
  .site-header-right { gap: 12px; }
  .header-cta { font-size: 13px; padding: 10px 14px; white-space: nowrap; }
  .form-card { padding: 36px 24px; }
  .value-grid { grid-template-columns: 1fr; }
  .trust-strip { grid-template-columns: 1fr 1fr; gap: 24px; }
  .site-footer-nav { grid-template-columns: 1fr 1fr; }
  .site-footer-bottom { flex-direction: column; gap: 12px; }
  .site-footer-bottom a { margin-left: 0; margin-right: 16px; }
}

/* 防止标题末行孤字换行；不支持 text-wrap 的旧浏览器自动忽略 */
h1, h2, h3, h4, .hero-role-name { text-wrap: balance; }

/* 极小屏（<360）隐藏头部文字 logo，保 F 标与按钮单行 */
@media (max-width: 359px) {
  .brand-logo-word { display: none; }
}

/* 头部/页脚字标替换为真实 logo 图形 */
.brand-logo-mark img { display: block; width: 26px; height: 26px; object-fit: contain; }