:root {
  --green: #1f5c3d;
  --green-deep: #143f29;
  --green-dark: #0e2f1e;
  --cream: #f7f3ea;
  --cream-soft: #fdfbf6;
  --lime: #dbe9a8;
  --lime-strong: #c9dd7f;
  --ink: #1c2a20;
  --ink-soft: #4c5a50;
  --border: #e5ddca;
  --white: #ffffff;
  --shadow: 0 16px 48px rgba(20, 63, 41, 0.10);
}

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

html { scroll-behavior: smooth; }

section { scroll-margin-top: 72px; }

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--lime-strong);
  outline-offset: 3px;
  border-radius: 4px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--cream);
  color: var(--ink);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ===== Nav ===== */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: var(--green-deep);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.nav-inner {
  max-width: 1120px; margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.logo { text-decoration: none; display: flex; align-items: center; }
.logo-img { height: 30px; width: auto; display: block; }
.nav-links { display: flex; gap: 30px; }
.nav-links a {
  color: rgba(255,255,255,0.82); text-decoration: none; font-size: 15px;
  transition: color .2s;
}
.nav-links a:hover { color: var(--lime); }
.nav-cta {
  background: var(--lime); color: var(--green-deep); text-decoration: none;
  padding: 9px 22px; border-radius: 999px; font-size: 14px; font-weight: 700;
  transition: background .2s, transform .2s;
}
.nav-cta:hover { background: var(--lime-strong); transform: translateY(-1px); }

/* ===== Hero ===== */
.hero {
  position: relative; overflow: hidden;
  padding: 110px 24px 100px;
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(219,233,168,0.35), transparent 60%),
    var(--cream);
}
.hero-inner { max-width: 1120px; margin: 0 auto; }
.hero-logo { height: 40px; width: auto; display: block; margin-bottom: 44px; }
.hero-eyebrow {
  display: inline-block; font-size: 15px; font-weight: 700; letter-spacing: 2px;
  color: var(--green); margin-bottom: 22px;
}
.hero-title { font-size: clamp(36px, 6vw, 62px); font-weight: 800; line-height: 1.2; letter-spacing: 0.5px; }
.mark {
  background: linear-gradient(180deg, transparent 60%, var(--lime) 60%);
  color: var(--green-deep); padding: 0 4px; border-radius: 2px;
}
.hero-sub { margin-top: 26px; font-size: 19px; color: var(--ink-soft); }
.hero-actions { margin-top: 40px; display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 14px 30px; border-radius: 999px;
  font-size: 16px; font-weight: 700; text-decoration: none; transition: transform .2s, box-shadow .2s, background .2s;
}
.btn-primary { background: var(--green); color: #fff; box-shadow: 0 10px 28px rgba(31, 92, 61, .30); }
.btn-primary:hover { background: var(--green-deep); transform: translateY(-2px); }
.btn-ghost { background: transparent; color: var(--green-deep); border: 1.5px solid var(--green); }
.btn-ghost:hover { background: var(--green-deep); color: #fff; transform: translateY(-2px); }

/* ===== Sections ===== */
.section { padding: 92px 24px; }
.section-inner { max-width: 1120px; margin: 0 auto; }
.section-eyebrow {
  text-align: center; font-size: 14px; font-weight: 700; letter-spacing: 3px;
  color: var(--green); text-transform: uppercase; margin-bottom: 14px;
}
.section-title { font-size: clamp(26px, 4vw, 40px); font-weight: 800; text-align: center; line-height: 1.35; }
.section-sub { text-align: center; color: var(--ink-soft); margin-top: 14px; font-size: 17px; }

/* ===== About ===== */
.section-about { background: var(--cream-soft); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.about-grid {
  display: flex; align-items: center; gap: 56px; flex-wrap: wrap;
}
.about-lead { flex: 1 1 480px; }
.about-lead .section-title { text-align: left; }
.about-p { margin-top: 22px; color: var(--ink-soft); font-size: 17px; }
.about-p strong { color: var(--green-deep); font-weight: 700; }

/* ===== Credential ===== */
.credential { flex: 0 0 auto; text-align: center; }
.credential-badge { width: 150px; height: 150px; display: block; margin: 0 auto; }
.credential-cap { margin-top: 16px; font-size: 14px; font-weight: 700; color: var(--green-deep); line-height: 1.5; }

/* ===== Team ===== */
.section-team { background: var(--cream); }
.team-intro {
  max-width: 720px; margin: 16px auto 0; text-align: center;
  color: var(--ink-soft); font-size: 17px;
}
.founder-grid {
  display: flex; align-items: center; gap: 64px; flex-wrap: wrap;
  margin-top: 48px;
}
.founder-photo { flex: 0 0 auto; }
.founder-photo img {
  width: 320px; height: auto; border-radius: 20px; display: block;
  box-shadow: var(--shadow);
}
.founder-bio { flex: 1 1 400px; }
.founder-name { font-size: 30px; font-weight: 800; color: var(--green-deep); }
.founder-role { margin-top: 8px; font-size: 16px; font-weight: 700; color: var(--green); }
.founder-list { margin-top: 24px; list-style: none; }
.founder-list li {
  position: relative; padding-left: 22px; margin-top: 14px;
  color: var(--ink-soft); font-size: 16px;
}
.founder-list li::before {
  content: ""; position: absolute; left: 0; top: 11px;
  width: 7px; height: 7px; border-radius: 50%; background: var(--lime-strong);
}

/* ===== Values ===== */
.section-values { background: var(--green-deep); color: #fff; }
.section-values .section-eyebrow { color: var(--lime); }
.section-values .section-title { color: #fff; }
.value-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 26px; margin-top: 54px;
}
.value-card {
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.14);
  border-radius: 18px; padding: 34px 30px; transition: transform .25s, background .25s;
}
.value-card:hover { transform: translateY(-5px); background: rgba(255,255,255,0.10); }
.value-num { font-size: 15px; font-weight: 800; color: var(--lime); letter-spacing: 1px; }
.value-title { font-size: 20px; font-weight: 700; margin-top: 16px; }
.value-text { margin-top: 12px; color: rgba(255,255,255,0.78); font-size: 15px; }

/* ===== Products ===== */
.product-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
  gap: 26px; margin-top: 54px;
}
.product-card {
  background: var(--cream-soft); border: 1px solid var(--border); border-radius: 20px;
  padding: 36px 32px; display: flex; flex-direction: column; box-shadow: var(--shadow);
  transition: transform .25s, box-shadow .25s;
}
.product-card:hover { transform: translateY(-6px); box-shadow: 0 22px 56px rgba(20, 63, 41, .16); }
.product-tag {
  align-self: flex-start; font-size: 12px; font-weight: 700; letter-spacing: 1px;
  background: var(--lime); color: var(--green-deep); padding: 4px 12px; border-radius: 999px;
}
.product-title { font-size: 22px; font-weight: 800; margin-top: 18px; line-height: 1.4; }
.product-sub { margin-top: 8px; color: var(--ink-soft); font-size: 15px; }
.product-audience {
  margin-top: 16px; font-size: 14px; color: var(--green-deep); font-weight: 600;
  background: rgba(219, 233, 168, 0.35); border-radius: 10px; padding: 10px 14px;
}
.product-list { margin-top: 18px; list-style: none; flex: 1 0 auto; }
.product-list li {
  position: relative; padding-left: 18px; margin-top: 10px;
  color: var(--ink-soft); font-size: 15px;
}
.product-list li::before {
  content: ""; position: absolute; left: 0; top: 11px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--green);
}
.product-link {
  margin-top: 24px; color: var(--green-deep); font-weight: 700; text-decoration: none;
  font-size: 15px; display: inline-block; transition: transform .2s;
}
.product-link:hover { transform: translateX(4px); }

/* ===== Contact ===== */
.contact-info {
  margin: 40px auto 0; max-width: 640px;
  background: var(--cream-soft); border: 1px solid var(--border); border-radius: 18px;
  padding: 26px 30px; box-shadow: var(--shadow);
}
.contact-line { display: flex; gap: 18px; padding: 12px 0; align-items: baseline; }
.contact-line + .contact-line { border-top: 1px dashed var(--border); }
.contact-k { flex: 0 0 72px; font-weight: 700; color: var(--green-deep); font-size: 15px; }
.contact-v { color: var(--ink-soft); font-size: 16px; line-height: 1.6; word-break: break-all; }
.contact-tel { color: var(--green-deep); font-weight: 700; }

.qr-grid {
  margin-top: 50px; display: flex; gap: 48px; justify-content: center; flex-wrap: wrap;
}
.qr-card { text-align: center; }
.qr-img {
  width: 200px; height: 200px; object-fit: cover; border-radius: 16px;
  border: 1px solid var(--border); background: #fff;
}
.qr-cap { margin-top: 16px; font-size: 16px; font-weight: 700; color: var(--green-deep); }

/* ===== Footer ===== */
.footer {
  background: var(--green-dark); color: rgba(255,255,255,0.75);
  text-align: center; padding: 64px 24px 48px;
}
.footer-logo { height: 40px; width: auto; }
.footer-tagline { margin-top: 22px; font-size: 16px; color: rgba(255,255,255,0.85); }
.footer-entity { margin-top: 28px; font-size: 14px; line-height: 1.9; color: rgba(255,255,255,0.7); }
.footer-legal { margin-top: 22px; display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 20px; }
.footer-legal a {
  font-size: 13px; color: rgba(255,255,255,0.55); text-decoration: none; transition: color .2s;
  display: inline-flex; align-items: center; gap: 5px;
}
.footer-legal a:hover { color: var(--lime); }
.psb-icon { width: 14px; height: auto; vertical-align: middle; }
.footer-copy { margin-top: 24px; font-size: 14px; color: rgba(255,255,255,0.6); }

/* ===== Sub-page (陪跑) ===== */
.hero-sub { padding: 88px 24px 80px; }
.hero-title-sub { font-size: clamp(30px, 5vw, 48px); }
.level-list { display: flex; flex-direction: column; gap: 28px; margin-top: 54px; }
.level-card {
  background: var(--cream-soft); border: 1px solid var(--border); border-radius: 20px;
  padding: 36px 36px 30px; box-shadow: var(--shadow);
}
.level-head { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.level-badge {
  background: var(--green-deep); color: var(--lime); font-weight: 800; letter-spacing: 1px;
  padding: 6px 16px; border-radius: 999px; font-size: 14px;
}
.level-meta { display: flex; align-items: center; gap: 16px; }
.level-duration { font-size: 15px; font-weight: 700; color: var(--green); }
.level-price { font-size: 20px; font-weight: 800; color: var(--green-deep); }
.level-title { font-size: 24px; font-weight: 800; margin-top: 18px; color: var(--ink); }
.level-sub { margin-top: 6px; color: var(--ink-soft); font-size: 15px; }
.level-detail { margin-top: 20px; }
.level-row {
  display: flex; gap: 16px; padding: 13px 0; border-top: 1px dashed var(--border);
}
.level-row:first-child { border-top: none; }
.level-row dt {
  flex: 0 0 76px; color: var(--green-deep); font-weight: 700; font-size: 14px; padding-top: 1px;
}
.level-row dd { color: var(--ink-soft); font-size: 15px; }

/* ===== Path ===== */
.section-path { background: var(--green-deep); color: #fff; }
.section-path .section-eyebrow { color: var(--lime); }
.section-path .section-title { color: #fff; }
.path-grid {
  margin-top: 54px; display: flex; align-items: stretch; justify-content: center;
  gap: 14px; flex-wrap: wrap;
}
.path-step {
  flex: 1 1 200px; max-width: 240px; background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14); border-radius: 16px; padding: 28px 22px;
}
.path-num { font-size: 14px; font-weight: 800; color: var(--lime); letter-spacing: 1px; }
.path-step h3 { font-size: 19px; font-weight: 700; margin-top: 12px; }
.path-step p { margin-top: 8px; color: rgba(255,255,255,0.75); font-size: 14px; }
.path-arrow { align-self: center; color: var(--lime); font-size: 22px; font-weight: 700; }

/* ===== Signup ===== */
.signup-grid {
  margin-top: 50px; display: flex; align-items: center; justify-content: center;
  gap: 60px; flex-wrap: wrap;
}
.signup-steps { list-style: none; font-size: 17px; color: var(--ink-soft); line-height: 2.4; }
.signup-steps strong { color: var(--green-deep); font-weight: 700; }
.qr-img-lg { width: 280px; height: 280px; }

/* ===== Closing ===== */
.section-closing { background: var(--cream-soft); border-top: 1px solid var(--border); }
.closing-text {
  text-align: center; font-size: clamp(20px, 3vw, 28px); font-weight: 800;
  color: var(--green-deep); line-height: 1.6;
}

/* ===== 404 ===== */
.notfound { text-align: center; padding: 40px 0; }
.notfound-code {
  font-size: 96px; font-weight: 800; color: var(--green);
  line-height: 1; letter-spacing: 2px;
}
.notfound-title { margin-top: 20px; font-size: clamp(24px, 4vw, 36px); font-weight: 800; color: var(--green-deep); }
.notfound-sub { margin-top: 14px; color: var(--ink-soft); font-size: 17px; }
.notfound-actions { margin-top: 36px; display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== Legal page ===== */
.legal-inner { max-width: 760px; }
.legal-title { font-size: clamp(28px, 4vw, 40px); font-weight: 800; text-align: center; color: var(--green-deep); }
.legal-updated { text-align: center; color: var(--ink-soft); margin-top: 10px; font-size: 14px; }
.legal-p { margin-top: 18px; color: var(--ink-soft); font-size: 16px; }
.legal-h2 { margin-top: 34px; font-size: 21px; font-weight: 800; color: var(--green-deep); }
.legal-list { margin-top: 12px; padding-left: 22px; color: var(--ink-soft); font-size: 16px; }
.legal-list li { margin-top: 8px; }

@media (max-width: 640px) {
  .nav-hide-mobile { display: none; }
  .nav-links { gap: 18px; }
  .hero { padding: 72px 20px 64px; }
  .hero br, .hero-sub br, .about-lead br { display: none; }
  .hero-title { font-size: clamp(32px, 9vw, 44px); }
  .about-grid { gap: 36px; }
  .about-lead .section-title { text-align: center; }
  .credential { margin: 0 auto; }
  .founder-grid { gap: 32px; }
  .founder-photo { margin: 0 auto; }
  .founder-photo img { width: 260px; }
  .qr-grid { gap: 28px; }
  .contact-line { flex-direction: column; gap: 4px; }
  .contact-k { flex: none; }
  .level-row { flex-direction: column; gap: 6px; }
  .level-row dt { flex: none; }
  .path-arrow { transform: rotate(90deg); }
  .signup-grid { gap: 36px; }
}