/* ============================
   花植茶语品牌官网
   ============================ */

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-primary: #3A7D5C;
  --color-primary-light: #5BA67D;
  --color-primary-dark: #2D6147;
  --color-accent: #8BC34A;
  --color-bg: #FAFCFA;
  --color-white: #FFFFFF;
  --color-text: #1A2E1A;
  --color-text-secondary: #5A6F5A;
  --color-text-light: #8A9C8A;
  --color-divider: #E8F0E8;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --shadow-sm: 0 2px 8px rgba(58,125,92,.08);
  --shadow-md: 0 8px 30px rgba(58,125,92,.10);
  --shadow-lg: 0 20px 60px rgba(58,125,92,.12);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: .3s cubic-bezier(.4,0,.2,1);
}

html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Reveal Animation ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity .7s var(--transition), transform .7s var(--transition);
}
[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}
.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
}
.btn--primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(58,125,92,.25);
}
.btn--outline {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}
.btn--outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* ---------- Section Header ---------- */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}
.section-header__tag {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 50px;
  background: rgba(58,125,92,.08);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .5px;
  margin-bottom: 16px;
}
.section-header__title {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 12px;
  color: var(--color-text);
}
.section-header__desc {
  font-size: 16px;
  color: var(--color-text-secondary);
  max-width: 520px;
  margin: 0 auto;
}

/* ================================
   Navbar
   ================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 18px 0;
  transition: all var(--transition);
}
.navbar--scrolled {
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
  padding: 12px 0;
}
.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.navbar__brand {
  display: flex;
  align-items: center;
  gap: 8px;
}
.navbar__logo { font-size: 28px; }
.navbar__name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary-dark);
}
.navbar__links {
  list-style: none;
  display: flex;
  gap: 32px;
}
.navbar__links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition);
  position: relative;
}
.navbar__links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: width var(--transition);
}
.navbar__links a:hover {
  color: var(--color-primary);
}
.navbar__links a:hover::after {
  width: 100%;
}

/* ================================
   Hero
   ================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(160deg, #F0F7F0 0%, #E8F5E9 30%, #DCEDC8 70%, #C8E6C9 100%);
}
.hero__bg-shapes {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero__circle {
  position: absolute;
  border-radius: 50%;
  opacity: .12;
}
.hero__circle--1 {
  width: 500px; height: 500px;
  background: var(--color-primary);
  top: -120px; right: -100px;
}
.hero__circle--2 {
  width: 300px; height: 300px;
  background: var(--color-accent);
  bottom: -80px; left: -60px;
}
.hero__circle--3 {
  width: 200px; height: 200px;
  background: var(--color-primary-light);
  top: 40%; left: 10%;
}
.hero__leaf {
  position: absolute;
  font-size: 60px;
  opacity: .15;
  animation: floatLeaf 8s ease-in-out infinite;
}
.hero__leaf--1 { top: 15%; right: 12%; animation-delay: 0s; }
.hero__leaf--2 { bottom: 20%; left: 8%; animation-delay: 2.5s; }
.hero__leaf--3 { top: 60%; right: 25%; animation-delay: 5s; font-size: 48px; }

@keyframes floatLeaf {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(8deg); }
}

.hero__content {
  position: relative;
  text-align: center;
  padding: 120px 20px 80px;
}
.hero__title {
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 24px;
}
.hero__title-line {
  display: block;
}
.hero__title-line--accent {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero__subtitle {
  font-size: clamp(16px, 2.5vw, 20px);
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto 40px;
  line-height: 1.7;
}
.hero__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 60px;
}
.hero__stats {
  display: inline-flex;
  align-items: center;
  gap: 32px;
  background: rgba(255,255,255,.7);
  backdrop-filter: blur(8px);
  padding: 20px 40px;
  border-radius: 60px;
  box-shadow: var(--shadow-sm);
}
.hero__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.hero__stat-num {
  font-size: 24px;
  font-weight: 800;
  color: var(--color-primary);
}
.hero__stat-label {
  font-size: 13px;
  color: var(--color-text-light);
}
.hero__stat-divider {
  width: 1px;
  height: 36px;
  background: var(--color-divider);
}

/* ================================
   Features
   ================================ */
.features {
  padding: 100px 0;
  background: var(--color-white);
}
.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feat-card {
  padding: 36px 28px;
  border-radius: var(--radius);
  background: var(--color-bg);
  border: 1px solid var(--color-divider);
  transition: all var(--transition);
}
.feat-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.feat-card__icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.feat-card__icon-wrap--green  { background: rgba(58,125,92,.1);  color: #3A7D5C; }
.feat-card__icon-wrap--blue   { background: rgba(33,150,243,.1); color: #2196F3; }
.feat-card__icon-wrap--purple { background: rgba(156,39,176,.1); color: #9C27B0; }
.feat-card__icon-wrap--orange { background: rgba(255,152,0,.1);  color: #FF9800; }
.feat-card__icon-wrap--pink   { background: rgba(233,30,99,.1);  color: #E91E63; }
.feat-card__icon-wrap--teal   { background: rgba(0,150,136,.1);  color: #009688; }

.feat-card__icon {
  width: 28px;
  height: 28px;
}
.feat-card__title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text);
}
.feat-card__desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ================================
   Showcase
   ================================ */
.showcase {
  padding: 100px 0;
  background: linear-gradient(180deg, var(--color-bg) 0%, #E8F5E9 100%);
}
.showcase__grid {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 40px;
  flex-wrap: wrap;
}
.showcase__phone {
  text-align: center;
}
.showcase__phone--center {
  transform: translateY(-20px);
}
.showcase__screen {
  width: 260px;
  border-radius: 28px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 6px solid var(--color-white);
  background: var(--color-white);
}
.showcase__phone--center .showcase__screen {
  width: 280px;
}
.showcase__label {
  display: block;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-secondary);
}

/* Mock Screen */
.mock-screen {
  background: var(--color-bg);
}
.mock-screen__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-divider);
}
.mock-screen__dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-divider);
}
.mock-screen__dot--clear { opacity: 0; }
.mock-screen__title-bar {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
}
.mock-screen__body {
  padding: 12px;
  min-height: 340px;
}

/* Mock cards inside screens */
.mock-card {
  border-radius: var(--radius-sm);
  padding: 16px;
  margin-bottom: 10px;
}
.mock-card--hero {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: var(--color-white);
}
.mock-card__badge {
  font-size: 11px;
  background: rgba(255,255,255,.25);
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  margin-bottom: 8px;
}
.mock-card__text {
  font-size: 14px;
  font-weight: 600;
}

.mock-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 12px;
}
.mock-grid__item {
  background: var(--color-white);
  border-radius: 10px;
  padding: 10px 4px;
  text-align: center;
  font-size: 11px;
  font-weight: 500;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-divider);
}

.mock-post {
  display: flex;
  gap: 10px;
  padding: 10px;
  background: var(--color-white);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
}
.mock-post__avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--color-divider);
  flex-shrink: 0;
}
.mock-post__content { flex: 1; }
.mock-post__name {
  width: 60px; height: 10px;
  background: var(--color-divider);
  border-radius: 4px;
  margin-bottom: 8px;
}
.mock-post__text {
  width: 100%; height: 8px;
  background: #F0F0F0;
  border-radius: 4px;
  margin-bottom: 5px;
}
.mock-post__text--short { width: 65%; }

/* Search */
.mock-search {
  background: var(--color-white);
  border-radius: 20px;
  padding: 8px 14px;
  font-size: 12px;
  color: var(--color-text-light);
  margin-bottom: 12px;
  border: 1px solid var(--color-divider);
}

/* Plant cards */
.mock-plant-card {
  display: flex;
  gap: 10px;
  padding: 10px;
  background: var(--color-white);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
}
.mock-plant-card__img {
  width: 54px; height: 54px;
  border-radius: 10px;
  flex-shrink: 0;
}
.mock-plant-card__info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
}
.mock-plant-card__name {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
}
.mock-plant-card__tag {
  font-size: 11px;
  color: var(--color-text-light);
}

/* Upload & Result mocks */
.mock-upload {
  text-align: center;
  padding: 32px 16px;
  background: var(--color-white);
  border: 2px dashed var(--color-divider);
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
}
.mock-upload__icon { font-size: 36px; margin-bottom: 8px; }
.mock-upload__text { font-size: 12px; color: var(--color-text-light); }

.mock-result {
  background: var(--color-white);
  border-radius: var(--radius-sm);
  padding: 14px;
}
.mock-result__badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  background: rgba(58,125,92,.1);
  color: var(--color-primary);
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 10px;
}
.mock-result__item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--color-text-secondary);
  padding: 6px 0;
}
.mock-result__dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.mock-result__dot--ok { background: var(--color-primary); }
.mock-result__dot--warn { background: #FF9800; }

/* ================================
   About
   ================================ */
.about {
  padding: 100px 0;
  background: var(--color-white);
}
.about__inner {
  max-width: 720px;
  margin: 0 auto;
}
.about__title {
  font-size: 32px;
  font-weight: 800;
  margin: 16px 0 20px;
  color: var(--color-text);
}
.about__desc {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}
.about__values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 36px;
}
.about__value {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 20px;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-divider);
}
.about__value-icon { font-size: 28px; flex-shrink: 0; }
.about__value strong {
  display: block;
  font-size: 15px;
  margin-bottom: 4px;
  color: var(--color-text);
}
.about__value p {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin: 0;
}

/* ================================
   Download
   ================================ */
.download {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-white);
  text-align: center;
}
.download__inner { max-width: 480px; margin: 0 auto; }
.download__title {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 12px;
}
.download__desc {
  font-size: 16px;
  opacity: .85;
  margin-bottom: 36px;
}
.download__qr-placeholder {
  width: 180px;
  height: 180px;
  margin: 0 auto 20px;
  background: rgba(255,255,255,.15);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 2px dashed rgba(255,255,255,.3);
}
.download__qr-placeholder span { font-size: 40px; }
.download__qr-placeholder p {
  font-size: 13px;
  opacity: .8;
  line-height: 1.4;
  margin: 0;
}
.download__hint {
  font-size: 13px;
  opacity: .65;
}

/* ================================
   Footer
   ================================ */
.footer {
  padding: 40px 0;
  background: var(--color-text);
  color: rgba(255,255,255,.6);
}
.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}
.footer__brand {
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer__logo { font-size: 22px; }
.footer__name {
  font-size: 16px;
  font-weight: 600;
  color: rgba(255,255,255,.85);
}
.footer__links {
  display: flex;
  gap: 28px;
}
.footer__links a {
  font-size: 13px;
  transition: color var(--transition);
}
.footer__links a:hover { color: rgba(255,255,255,.95); }
.footer__copy {
  text-align: center;
  font-size: 12px;
  line-height: 1.8;
}
.footer__icp { opacity: .5; }

/* ================================
   Responsive
   ================================ */
@media (max-width: 768px) {
  .navbar__links { gap: 20px; }
  .navbar__links a { font-size: 13px; }

  .hero__content { padding: 100px 16px 60px; }
  .hero__stats {
    flex-direction: column;
    gap: 16px;
    padding: 20px 32px;
    border-radius: var(--radius);
  }
  .hero__stat-divider {
    width: 60px;
    height: 1px;
  }

  .section-header__title { font-size: 28px; }
  .section-header { margin-bottom: 40px; }

  .features { padding: 60px 0; }
  .features__grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .showcase { padding: 60px 0; }
  .showcase__grid {
    flex-direction: column;
    align-items: center;
    gap: 28px;
  }
  .showcase__phone--center { transform: none; }
  .showcase__screen,
  .showcase__phone--center .showcase__screen {
    width: 260px;
  }

  .about { padding: 60px 0; }
  .about__title { font-size: 26px; }
  .about__values {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .download { padding: 60px 0; }
  .download__title { font-size: 26px; }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}