/* ================================
   钧箓院 · 草木文箓 前台全局样式
   色系：浅草木绿#6B8C7B / 米白#F5F2EB / 墨黑#222222
   ================================ */

/* --- Reset & Base --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;
  color: #222;
  background: #F5F2EB;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
a { color: #6B8C7B; text-decoration: none; transition: color .3s; }
a:hover { color: #4a6b55; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* --- Variables --- */
:root {
  --green: #6B8C7B;
  --green-light: #8aad9b;
  --green-dark: #4a6b55;
  --cream: #F5F2EB;
  --cream-dark: #ebe7dd;
  --ink: #222222;
  --ink-light: #555555;
  --white: #ffffff;
  --shadow: 0 4px 20px rgba(0,0,0,0.06);
  --shadow-hover: 0 8px 30px rgba(0,0,0,0.12);
  --radius: 8px;
  --transition: .3s ease;
}

/* --- Container --- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* --- Header & Nav --- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(245,242,235,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background var(--transition), box-shadow var(--transition);
}
.site-header.scrolled {
  background: rgba(245,242,235,0.97);
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 70px; max-width: 1200px; margin: 0 auto; padding: 0 20px;
}
.nav-logo {
  font-size: 1.5rem; font-weight: 700; color: var(--green);
  letter-spacing: 4px;
}
.nav-logo span { font-size: .85rem; color: var(--ink-light); margin-left: 8px; letter-spacing: 2px; }
.nav-menu { display: flex; gap: 8px; }
.nav-menu a {
  padding: 8px 16px; font-size: .9rem; color: var(--ink);
  border-radius: 4px; transition: all var(--transition);
}
.nav-menu a:hover, .nav-menu a.active {
  color: var(--green); background: rgba(107,140,123,0.08);
}
.nav-toggle { display: none; cursor: pointer; font-size: 1.5rem; color: var(--green); }

/* --- Banner / Hero --- */
.hero {
  position: relative; height: 100vh; min-height: 600px;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden; margin-top: 70px;
}
.hero-slider { position: absolute; inset: 0; }
.hero-slide {
  position: absolute; inset: 0; opacity: 0;
  transition: opacity 1s ease;
  background-size: cover; background-position: center;
}
.hero-slide.active { opacity: 1; }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(34,34,34,0.55), rgba(107,140,123,0.35));
}
.hero-content {
  position: relative; z-index: 2; text-align: center; color: var(--white);
  padding: 0 20px;
}
.hero-content h1 {
  font-size: 3rem; letter-spacing: 8px; margin-bottom: 12px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.hero-content p {
  font-size: 1.15rem; letter-spacing: 3px; opacity: .9; margin-bottom: 32px;
}
.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-arrow {
  position: absolute; top: 50%; z-index: 3;
  width: 44px; height: 44px; border-radius: 50%;
  background: rgba(255,255,255,0.2); border: 1px solid rgba(255,255,255,0.3);
  color: #fff; font-size: 1.2rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
}
.hero-arrow:hover { background: rgba(255,255,255,0.35); }
.hero-arrow.prev { left: 24px; transform: translateY(-50%); }
.hero-arrow.next { right: 24px; transform: translateY(-50%); }
.hero-dots {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  z-index: 3; display: flex; gap: 10px;
}
.hero-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: rgba(255,255,255,0.4); cursor: pointer;
  transition: all var(--transition);
}
.hero-dot.active { background: #fff; transform: scale(1.3); }

/* --- Buttons --- */
.btn {
  display: inline-block; padding: 12px 32px; border-radius: 4px;
  font-size: .95rem; letter-spacing: 2px; cursor: pointer;
  transition: all var(--transition); border: none; font-family: inherit;
}
.btn-primary {
  background: var(--green); color: var(--white);
}
.btn-primary:hover { background: var(--green-dark); transform: translateY(-1px); }
.btn-outline {
  background: transparent; color: var(--white);
  border: 1px solid rgba(255,255,255,0.5);
}
.btn-outline:hover { background: rgba(255,255,255,0.15); border-color: #fff; }
.btn-green-outline {
  background: transparent; color: var(--green);
  border: 1px solid var(--green);
}
.btn-green-outline:hover { background: var(--green); color: #fff; }
.btn-sm { padding: 8px 20px; font-size: .85rem; }

/* --- Sections --- */
.section { padding: 80px 0; }
.section-title {
  text-align: center; font-size: 1.8rem; letter-spacing: 4px;
  color: var(--ink); margin-bottom: 12px;
}
.section-subtitle {
  text-align: center; color: var(--ink-light); font-size: .95rem;
  margin-bottom: 48px; letter-spacing: 1px;
}
.section-title::after {
  content: ''; display: block; width: 40px; height: 2px;
  background: var(--green); margin: 12px auto 0;
}

/* --- Brand Intro --- */
.brand-intro {
  background: var(--white); position: relative;
}
.brand-intro-inner {
  max-width: 800px; margin: 0 auto; text-align: center;
  padding: 60px 20px;
}
.brand-intro-inner p {
  font-size: 1.05rem; color: var(--ink-light); line-height: 2;
  text-indent: 2em;
}

/* --- Business Cards --- */
.business-section { background: var(--cream); }
.business-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; max-width: 800px; margin: 0 auto;
}
.business-card {
  background: var(--white); border-radius: var(--radius);
  padding: 40px 28px; text-align: center;
  box-shadow: var(--shadow); transition: all var(--transition);
}
.business-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.business-card .icon {
  width: 64px; height: 64px; margin: 0 auto 20px;
  background: rgba(107,140,123,0.1); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem; color: var(--green);
}
.business-card h3 { font-size: 1.2rem; margin-bottom: 8px; letter-spacing: 2px; }
.business-card p { color: var(--ink-light); font-size: .9rem; margin-bottom: 20px; }
.business-card .price-tag { color: var(--green); font-size: 1.1rem; font-weight: 600; margin-bottom: 16px; }

/* --- Principles --- */
.principles-section { background: var(--white); }
.principles-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.principle-item {
  text-align: center; padding: 28px 16px;
  border: 1px solid var(--cream-dark); border-radius: var(--radius);
  transition: all var(--transition);
}
.principle-item:hover { border-color: var(--green); }
.principle-item .num {
  font-size: 2rem; color: var(--green-light); font-weight: 700; margin-bottom: 8px;
}
.principle-item h4 { font-size: 1rem; margin-bottom: 6px; letter-spacing: 1px; }
.principle-item p { font-size: .85rem; color: var(--ink-light); }

/* --- Works Grid --- */
.works-filter {
  display: flex; justify-content: center; gap: 12px; margin-bottom: 40px; flex-wrap: wrap;
}
.filter-btn {
  padding: 8px 24px; border-radius: 20px; border: 1px solid var(--cream-dark);
  background: transparent; color: var(--ink-light); cursor: pointer;
  font-size: .9rem; transition: all var(--transition); font-family: inherit;
}
.filter-btn:hover, .filter-btn.active {
  background: var(--green); color: #fff; border-color: var(--green);
}
.works-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.work-card {
  background: var(--white); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow);
  cursor: pointer; transition: all var(--transition);
}
.work-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.work-card .img-wrap {
  height: 240px; overflow: hidden; background: var(--cream-dark);
}
.work-card .img-wrap img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .5s ease;
}
.work-card:hover .img-wrap img { transform: scale(1.05); }
.work-card .info { padding: 20px; }
.work-card h3 { font-size: 1.05rem; margin-bottom: 6px; letter-spacing: 1px; }
.work-card .plant { font-size: .85rem; color: var(--ink-light); margin-bottom: 4px; }
.work-card .meaning { font-size: .85rem; color: var(--green); margin-bottom: 8px; }
.work-card .price { font-size: 1rem; color: var(--green); font-weight: 600; }

/* --- Modal --- */
.modal-overlay {
  position: fixed; inset: 0; z-index: 2000;
  background: rgba(0,0,0,0.6); backdrop-filter: blur(4px);
  display: none; align-items: center; justify-content: center;
  padding: 20px;
}
.modal-overlay.show { display: flex; }
.modal-box {
  background: var(--white); border-radius: var(--radius);
  max-width: 700px; width: 100%; max-height: 85vh; overflow-y: auto;
  position: relative; padding: 0;
}
.modal-close {
  position: absolute; top: 16px; right: 16px; z-index: 2;
  width: 36px; height: 36px; border-radius: 50%;
  background: rgba(0,0,0,0.05); border: none;
  font-size: 1.2rem; cursor: pointer; color: var(--ink-light);
  transition: all var(--transition);
}
.modal-close:hover { background: rgba(0,0,0,0.12); }
.modal-img { width: 100%; max-height: 400px; object-fit: cover; }
.modal-body { padding: 28px; }
.modal-body h2 { font-size: 1.4rem; margin-bottom: 12px; letter-spacing: 2px; }
.modal-body .meta { font-size: .9rem; color: var(--ink-light); margin-bottom: 6px; }
.modal-body .meta strong { color: var(--green); }
.modal-body .modal-price { font-size: 1.3rem; color: var(--green); font-weight: 700; margin: 16px 0; }
.modal-body .notice { font-size: .85rem; color: var(--ink-light); background: var(--cream); padding: 12px; border-radius: 4px; margin-top: 16px; }

/* --- Process Steps --- */
.process-steps { display: flex; gap: 0; justify-content: center; flex-wrap: wrap; }
.step {
  flex: 1; min-width: 200px; text-align: center; padding: 28px 16px;
  position: relative;
}
.step .step-num {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--green); color: #fff; font-size: 1.2rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px;
}
.step h4 { font-size: 1rem; margin-bottom: 6px; }
.step p { font-size: .85rem; color: var(--ink-light); }
.step::after {
  content: '\2192'; position: absolute; right: -10px; top: 52px;
  font-size: 1.4rem; color: var(--green-light);
}
.step:last-child::after { display: none; }

/* --- Pricing --- */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.price-card {
  background: var(--white); border-radius: var(--radius);
  padding: 32px 20px; text-align: center;
  box-shadow: var(--shadow); transition: all var(--transition);
  border: 2px solid transparent;
}
.price-card:hover { border-color: var(--green); }
.price-card.featured { border-color: var(--green); }
.price-card h3 { font-size: 1.05rem; letter-spacing: 1px; margin-bottom: 8px; }
.price-card .amount { font-size: 2rem; color: var(--green); font-weight: 700; margin: 12px 0; }
.price-card .amount small { font-size: .9rem; font-weight: 400; }
.price-card ul { margin: 16px 0; }
.price-card li { font-size: .85rem; color: var(--ink-light); padding: 4px 0; }

/* --- Forms --- */
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block; font-size: .9rem; color: var(--ink);
  margin-bottom: 6px; font-weight: 600;
}
.form-group label .required { color: #c0392b; }
.form-input {
  width: 100%; padding: 12px 16px; border: 1px solid var(--cream-dark);
  border-radius: 4px; font-size: .95rem; background: var(--white);
  transition: border-color var(--transition); font-family: inherit;
}
.form-input:focus { outline: none; border-color: var(--green); }
.form-input.error { border-color: #c0392b; }
.form-error { font-size: .8rem; color: #c0392b; margin-top: 4px; display: none; }
.form-input.error + .form-error { display: block; }
textarea.form-input { min-height: 100px; resize: vertical; }
.checkbox-group { display: flex; gap: 16px; flex-wrap: wrap; }
.checkbox-group label {
  display: flex; align-items: center; gap: 6px;
  font-weight: 400; cursor: pointer;
}
.checkbox-group input[type="checkbox"] { accent-color: var(--green); }

/* --- Footer --- */
.site-footer {
  background: var(--ink); color: rgba(255,255,255,0.7);
  padding: 48px 0 24px;
}
.footer-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 20px;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
  margin-bottom: 32px;
}
.footer-col h4 {
  color: #fff; font-size: 1rem; margin-bottom: 16px; letter-spacing: 2px;
}
.footer-col p { font-size: .85rem; line-height: 1.8; }
.footer-col a {
  display: block; color: rgba(255,255,255,0.6); font-size: .85rem;
  padding: 3px 0; transition: color var(--transition);
}
.footer-col a:hover { color: var(--green-light); }
.footer-social { display: flex; gap: 12px; margin-top: 8px; }
.footer-social a {
  width: 36px; height: 36px; border-radius: 50%;
  background: rgba(255,255,255,0.1); display: flex;
  align-items: center; justify-content: center;
  font-size: .85rem; transition: all var(--transition);
}
.footer-social a:hover { background: var(--green); color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px;
  text-align: center; font-size: .8rem;
}
.footer-disclaimer {
  background: rgba(107,140,123,0.15); padding: 12px 20px;
  border-radius: 4px; font-size: .8rem; margin-bottom: 12px;
  color: var(--green-light);
}

/* --- Back to Top --- */
.back-top {
  position: fixed; bottom: 32px; right: 32px; z-index: 900;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--green); color: #fff; border: none;
  font-size: 1.2rem; cursor: pointer;
  opacity: 0; visibility: hidden; transition: all var(--transition);
  box-shadow: 0 4px 12px rgba(107,140,123,0.3);
}
.back-top.show { opacity: 1; visibility: visible; }
.back-top:hover { transform: translateY(-3px); }

/* --- Fade-in Animation --- */
.fade-in {
  opacity: 0; transform: translateY(30px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* --- Page Header (inner pages) --- */
.page-header {
  padding: 140px 0 60px; text-align: center;
  background: linear-gradient(135deg, var(--cream) 0%, var(--white) 100%);
}
.page-header h1 {
  font-size: 2rem; letter-spacing: 4px; color: var(--ink); margin-bottom: 8px;
}
.page-header p { color: var(--ink-light); font-size: .95rem; letter-spacing: 1px; }

/* --- About Page --- */
.about-content { max-width: 800px; margin: 0 auto; }
.about-block { margin-bottom: 48px; }
.about-block h2 {
  font-size: 1.3rem; color: var(--ink); letter-spacing: 2px;
  margin-bottom: 16px; padding-left: 12px;
  border-left: 3px solid var(--green);
}
.about-block p { color: var(--ink-light); line-height: 2; text-indent: 2em; }

/* --- Copyright Page --- */
.copyright-block {
  background: var(--white); border-radius: var(--radius);
  padding: 32px; margin-bottom: 24px; box-shadow: var(--shadow);
}
.copyright-block h2 {
  font-size: 1.2rem; margin-bottom: 16px; letter-spacing: 1px;
  color: var(--ink); padding-bottom: 12px;
  border-bottom: 1px solid var(--cream-dark);
}
.copyright-block p { color: var(--ink-light); font-size: .95rem; line-height: 2; }

/* --- Contact Page --- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-info-card {
  background: var(--white); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow); margin-bottom: 16px;
}
.contact-info-card h3 { font-size: 1rem; margin-bottom: 8px; color: var(--green); }
.contact-info-card p { font-size: .9rem; color: var(--ink-light); }
.contact-form-wrap {
  background: var(--white); border-radius: var(--radius);
  padding: 32px; box-shadow: var(--shadow);
}

/* --- Notice Bar --- */
.notice-bar {
  background: rgba(107,140,123,0.08); padding: 10px 0;
  text-align: center; font-size: .85rem; color: var(--green);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .business-grid { grid-template-columns: 1fr; max-width: 500px; margin: 0 auto; }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .principles-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed; top: 70px; left: 0; right: 0;
    background: rgba(245,242,235,0.98); backdrop-filter: blur(12px);
    flex-direction: column; padding: 20px; gap: 4px;
    transform: translateY(-120%); transition: transform .3s ease;
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
  }
  .nav-menu.open { transform: translateY(0); }
  .nav-toggle { display: block; }
  .hero-content h1 { font-size: 2rem; letter-spacing: 4px; }
  .hero-content p { font-size: .95rem; }
  .works-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .process-steps { flex-direction: column; align-items: center; }
  .step::after { display: none; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 360px; margin: 0 auto; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
}

@media (max-width: 480px) {
  .hero-content h1 { font-size: 1.6rem; }
  .works-grid { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; align-items: center; }
  .principles-grid { grid-template-columns: 1fr; }
  .business-grid { grid-template-columns: 1fr; }
}