/* ===== 植慧官网 · 自然清新治愈系 ===== */
:root {
  --cream: #faf7f0;
  --paper: #ffffff;
  --green: #2e6b3f;
  --green-deep: #1d4a2c;
  --green-mid: #4a8a5c;
  --green-soft: #e9f2e6;
  --green-pale: #f3f8f1;
  --wood: #b08958;
  --sand: #efe6d5;
  --ink: #2b3a2e;
  --muted: #77836f;
  --line: #e4e0d4;
  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(40, 60, 40, .08);
  --shadow-sm: 0 4px 14px rgba(40, 60, 40, .06);
  --serif: "Noto Serif SC", "Songti SC", "STSong", Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--green); text-decoration: none; transition: color .18s; }
a:hover { color: var(--green-deep); }
h1, h2, h3, h4 { font-family: var(--serif); line-height: 1.35; font-weight: 700; }
.container { max-width: 1140px; margin: 0 auto; padding: 0 22px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 26px; border-radius: 999px; border: 1.5px solid transparent;
  font-size: 15px; font-weight: 600; cursor: pointer; transition: all .18s; white-space: nowrap;
}
.btn-primary { background: var(--green); color: #fff; box-shadow: 0 6px 16px rgba(46,107,63,.25); }
.btn-primary:hover { background: var(--green-deep); color: #fff; transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--green-deep); border-color: var(--green-mid); }
.btn-ghost:hover { background: var(--green-soft); }
.btn-light { background: #fff; color: var(--green-deep); }
.btn-light:hover { color: var(--green-deep); background: var(--green-pale); transform: translateY(-1px); }
.btn-sm { padding: 9px 18px; font-size: 13.5px; }
.btn-block { width: 100%; }

/* ---------- 头部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(250,247,240,.92); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-bar { display: flex; align-items: center; justify-content: space-between; height: 70px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark { color: var(--green); display: inline-flex; }
.brand-text { font-family: var(--serif); font-size: 25px; font-weight: 800; letter-spacing: 2px; color: var(--green-deep); }
.main-nav { display: flex; gap: 4px; }
.main-nav a {
  padding: 9px 15px; border-radius: 999px; color: var(--ink); font-size: 15px; font-weight: 500;
}
.main-nav a:hover { background: var(--green-soft); color: var(--green-deep); }
.main-nav a.active { background: var(--green); color: #fff; }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle span { width: 22px; height: 2px; background: var(--ink); border-radius: 2px; transition: .25s; }
@media (max-width: 960px) {
  .main-nav {
    position: fixed; inset: 70px 0 auto 0; background: var(--cream);
    flex-direction: column; padding: 12px 20px 20px; border-bottom: 1px solid var(--line);
    display: none; gap: 4px;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 16px; font-size: 16px; }
  .nav-toggle { display: inline-flex; }
  .nav-actions .btn { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: radial-gradient(1200px 500px at 85% -10%, #dcecd6 0%, transparent 60%),
              radial-gradient(900px 420px at -10% 30%, #f3e8d5 0%, transparent 55%), var(--cream);
  padding: 84px 0 70px;
}
.hero::after {
  content: ""; position: absolute; right: -60px; bottom: -90px; width: 380px; height: 380px;
  background: radial-gradient(circle, #cde3c5 0%, transparent 68%);
  border-radius: 50%; z-index: 0;
}
.hero .container { position: relative; z-index: 1; }
.hero-inner { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 16px; border-radius: 999px;
  background: var(--green-soft); color: var(--green-deep); font-size: 13px; font-weight: 600; letter-spacing: .5px;
  margin-bottom: 20px;
}
.hero h1 { font-size: clamp(34px, 5vw, 52px); color: var(--green-deep); letter-spacing: 1px; }
.hero h1 .accent { color: var(--green); }
.hero-sub { margin: 18px 0 30px; font-size: 17px; color: #5a6657; max-width: 540px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 34px; }
.hero-points { display: flex; gap: 26px; flex-wrap: wrap; color: var(--muted); font-size: 14px; }
.hero-points b { color: var(--green-deep); font-size: 20px; font-family: var(--serif); margin-right: 4px; }
.hero-visual { position: relative; }
.hero-card {
  background: var(--paper); border-radius: 26px; padding: 26px; box-shadow: var(--shadow);
  border: 1px solid #f0ecdf; transform: rotate(1.2deg);
}
.hero-card-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.hero-card-head .chip { background: var(--green-pale); color: var(--green); border-radius: 999px; padding: 4px 12px; font-size: 12px; font-weight: 600; }
.hero-plant {
  display: flex; gap: 14px; align-items: center; background: #fff; border-radius: 16px;
  padding: 12px; border: 1px solid var(--line); margin-bottom: 10px;
}
.hero-plant .thumb { width: 52px; height: 52px; border-radius: 14px; flex: none; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 20px; font-family: var(--serif); }
.hero-plant .name { font-weight: 700; color: var(--ink); }
.hero-plant .meta { font-size: 12.5px; color: var(--muted); }
.hero-plant .state { margin-left: auto; display: flex; align-items: center; gap: 5px; font-size: 12.5px; font-weight: 600; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot.ok { background: #58b368; } .dot.warn { background: #e8b13d; } .dot.bad { background: #d96459; }
.hero-tip {
  background: linear-gradient(120deg, var(--green-deep), var(--green));
  color: #fff; border-radius: 18px; padding: 16px 18px; margin-top: 14px; font-size: 14px;
  box-shadow: 0 10px 22px rgba(29,74,44,.28);
}
.hero-tip b { font-family: var(--serif); font-size: 16px; }
.float-note {
  position: absolute; background: #fff; border-radius: 14px; padding: 10px 16px; box-shadow: var(--shadow-sm);
  font-size: 13px; color: var(--ink); border: 1px solid var(--line);
}
.float-note.f1 { top: -18px; right: -6px; }
.float-note.f2 { bottom: 34px; left: -26px; }
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero { padding: 48px 0 44px; }
}

/* ---------- 通用区块 ---------- */
.section { padding: 72px 0; }
.section.alt { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section.soft { background: var(--green-pale); }
.section-head { max-width: 760px; margin: 0 auto 46px; text-align: center; }
.section-head .kicker { color: var(--green); font-weight: 700; letter-spacing: 3px; font-size: 13px; margin-bottom: 10px; display: block; }
.section-head h2 { font-size: clamp(26px, 3.4vw, 36px); color: var(--green-deep); }
.section-head p { margin-top: 14px; color: var(--muted); font-size: 16px; }
.lead { color: var(--muted); font-size: 16.5px; }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 960px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }
.card {
  background: var(--paper); border-radius: var(--radius); padding: 26px;
  border: 1px solid #efead9; box-shadow: var(--shadow-sm); transition: transform .2s, box-shadow .2s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.card-icon { width: 54px; height: 54px; border-radius: 15px; display: flex; align-items: center; justify-content: center; font-size: 26px; margin-bottom: 16px; }
.card h3 { font-size: 19px; color: var(--green-deep); margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 14.5px; }

/* ---------- 流程条 ---------- */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; counter-reset: step; }
.step {
  background: #fff; border-radius: var(--radius); border: 1px solid var(--line); padding: 24px 20px; position: relative;
}
.step .step-no {
  width: 34px; height: 34px; border-radius: 50%; background: var(--green-soft); color: var(--green-deep);
  font-weight: 800; display: flex; align-items: center; justify-content: center; margin-bottom: 12px; font-size: 15px;
}
.step h4 { font-size: 16.5px; color: var(--green-deep); margin-bottom: 6px; }
.step p { font-size: 13.5px; color: var(--muted); }

/* ---------- 植物百科 ---------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 26px; }
.filter-bar .search-box { display: flex; flex: 1; min-width: 220px; }
.filter-bar input[type=text] {
  flex: 1; border: 1.5px solid var(--line); border-radius: 999px 0 0 999px; padding: 11px 20px;
  font-size: 15px; background: #fff; outline: none; color: var(--ink);
}
.filter-bar input[type=text]:focus { border-color: var(--green-mid); }
.filter-bar button[type=submit] { border-radius: 0 999px 999px 0; border: 1.5px solid var(--green); background: var(--green); color: #fff; padding: 0 22px; cursor: pointer; font-size: 15px; }
.cat-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.cat-pills a { padding: 7px 15px; border-radius: 999px; background: #fff; border: 1px solid var(--line); color: var(--ink); font-size: 13.5px; }
.cat-pills a:hover { border-color: var(--green-mid); color: var(--green-deep); }
.cat-pills a.active { background: var(--green); color: #fff; border-color: var(--green); }
.plant-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 18px; }
.plant-card {
  background: #fff; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line);
  box-shadow: var(--shadow-sm); transition: transform .2s, box-shadow .2s; display: block;
}
.plant-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); color: inherit; }
.plant-thumb {
  aspect-ratio: 4/3; display: flex; align-items: center; justify-content: center; position: relative;
  background: linear-gradient(135deg, var(--g1), var(--g2));
}
.plant-thumb .initial {
  font-family: var(--serif); font-size: 46px; color: rgba(255,255,255,.96); font-weight: 700;
  text-shadow: 0 4px 12px rgba(0,0,0,.10);
}
.plant-thumb .difficulty {
  position: absolute; top: 10px; right: 10px; background: rgba(255,255,255,.85); backdrop-filter: blur(4px);
  font-size: 11.5px; padding: 3px 10px; border-radius: 999px; color: var(--green-deep); font-weight: 600;
}
.plant-body { padding: 13px 16px 16px; }
.plant-body h3 { font-size: 17px; color: var(--green-deep); }
.plant-body .cat { font-size: 12px; color: var(--wood); font-weight: 600; letter-spacing: .5px; }
.plant-body .meaning { font-size: 13px; color: var(--muted); margin-top: 4px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 34px; }
.pagination a, .pagination span {
  min-width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center;
  border-radius: 10px; background: #fff; border: 1px solid var(--line); color: var(--ink); font-size: 14px;
}
.pagination .cur { background: var(--green); color: #fff; border-color: var(--green); }
.empty { text-align: center; color: var(--muted); padding: 60px 0; }

/* ---------- 百科详情 ---------- */
.detail-hero { background: #fff; border-bottom: 1px solid var(--line); }
.detail-top { display: grid; grid-template-columns: 380px 1fr; gap: 40px; padding: 40px 0; align-items: start; }
@media (max-width: 860px) { .detail-top { grid-template-columns: 1fr; } }
.detail-img {
  aspect-ratio: 1/1; border-radius: 24px; display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--g1), var(--g2));
}
.detail-img .initial { font-family: var(--serif); font-size: 90px; color: rgba(255,255,255,.95); font-weight: 700; text-shadow: 0 6px 20px rgba(0,0,0,.12); }
.detail-img .img-note { margin-top: 12px; color: rgba(255,255,255,.8); font-size: 12.5px; }
.detail-title h1 { font-size: clamp(26px, 3.6vw, 36px); color: var(--green-deep); }
.detail-title .sci { color: var(--muted); font-style: italic; font-size: 15.5px; margin-top: 6px; }
.detail-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0; }
.tag { background: var(--green-pale); color: var(--green-deep); padding: 6px 14px; border-radius: 999px; font-size: 13px; font-weight: 600; }
.care-strip { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin-top: 20px; }
.care-cell { background: var(--green-pale); border-radius: 14px; padding: 12px 14px; }
.care-cell .k { font-size: 12px; color: var(--muted); display: block; margin-bottom: 4px; }
.care-cell .v { font-size: 13.5px; color: var(--green-deep); font-weight: 600; line-height: 1.5; }
.info-cards { padding: 56px 0 26px; }
.info-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
@media (max-width: 760px) { .info-grid { grid-template-columns: 1fr; } }
.info-block { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 24px; }
.info-block h3 { font-size: 17px; color: var(--green-deep); display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.info-block p { font-size: 14.5px; color: #55604f; white-space: pre-line; }
.info-block.full { grid-column: 1 / -1; }

/* ---------- 合作 ---------- */
.coop-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 46px; align-items: start; }
@media (max-width: 900px) { .coop-grid { grid-template-columns: 1fr; } }
.form-card { background: #fff; border-radius: 24px; padding: 30px; border: 1px solid var(--line); box-shadow: var(--shadow-sm); }
.form-card h3 { color: var(--green-deep); margin-bottom: 20px; font-size: 21px; }
.form-row { margin-bottom: 16px; }
.form-row label { display: block; font-size: 14px; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.form-row label .req { color: #d96459; }
.form-row input[type=text], .form-row input[type=tel], .form-row input[type=email], .form-row input[type=password], .form-row input[type=number], .form-row textarea, .form-row select {
  width: 100%; padding: 12px 15px; border: 1.5px solid var(--line); border-radius: 12px; font-size: 15px;
  background: #fff; color: var(--ink); font-family: var(--sans); outline: none; transition: border .15s;
}
.form-row input:focus, .form-row textarea:focus, .form-row select:focus { border-color: var(--green-mid); }
.form-row textarea { min-height: 100px; resize: vertical; }
.form-grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
@media (max-width: 600px) { .form-grid2 { grid-template-columns: 1fr; } }
.alert { padding: 14px 18px; border-radius: 12px; margin-bottom: 18px; font-size: 14.5px; }
.alert.ok { background: var(--green-soft); color: var(--green-deep); border: 1px solid #cfe3c8; }
.alert.err { background: #fbeae7; color: #a13d30; border: 1px solid #f0cfc9; }

/* ---------- 关于/正文页 ---------- */
.page-hero { padding: 62px 0 46px; text-align: center; background: radial-gradient(700px 260px at 50% -20%, #e3eedc 0%, transparent 70%), var(--cream); }
.page-hero h1 { font-size: clamp(28px, 4vw, 42px); color: var(--green-deep); }
.page-hero p { margin-top: 12px; color: var(--muted); font-size: 16.5px; max-width: 640px; margin-left: auto; margin-right: auto; }
.prose { font-size: 16px; color: #46523f; }
.prose h3 { color: var(--green-deep); margin: 26px 0 12px; }
.prose p { margin-bottom: 16px; }
.two-col-list { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 20px; }
@media (max-width: 800px) { .two-col-list { grid-template-columns: 1fr; } }
.feature-item { display: flex; gap: 14px; align-items: flex-start; background: #fff; padding: 18px; border-radius: var(--radius); border: 1px solid var(--line); }
.feature-item .fi-icon { font-size: 24px; flex: none; }
.feature-item h4 { font-size: 16px; color: var(--green-deep); margin-bottom: 4px; }
.feature-item p { font-size: 13.5px; color: var(--muted); }

/* ---------- 新闻 ---------- */
.news-list { display: grid; gap: 18px; }
.news-card { display: grid; grid-template-columns: 260px 1fr; gap: 20px; background: #fff; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
@media (max-width: 700px) { .news-card { grid-template-columns: 1fr; } }
.news-cover { background: linear-gradient(135deg, #e3eedc, #cfe3c5); min-height: 150px; display: flex; align-items: center; justify-content: center; font-size: 42px; }
.news-body { padding: 20px 20px 20px 0; }
@media (max-width: 700px) { .news-body { padding: 0 18px 18px; } }
.news-body h3 { font-size: 18px; color: var(--green-deep); margin-bottom: 6px; }
.news-body .date { font-size: 12.5px; color: var(--wood); }
.news-body p { font-size: 14px; color: var(--muted); margin-top: 8px; }
.article-content { background: #fff; border: 1px solid var(--line); border-radius: 22px; padding: 40px 46px; max-width: 860px; margin: 0 auto; }
@media (max-width: 700px) { .article-content { padding: 24px 22px; } }
.article-content h1 { font-size: 26px; color: var(--green-deep); }
.article-content .meta { color: var(--muted); font-size: 13.5px; margin: 10px 0 24px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.article-content .content p { margin-bottom: 15px; white-space: pre-line; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--green-deep); color: #d8e4d2; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 34px; padding: 56px 0 40px; }
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-col h4 { color: #fff; font-size: 15.5px; margin-bottom: 14px; letter-spacing: 1px; }
.footer-col a { display: block; color: #b7c9b0; font-size: 14px; padding: 4px 0; }
.footer-col a:hover { color: #fff; }
.brand-light .brand-mark { color: #cfe3c5; }
.brand-light .brand-text { color: #fff; }
.footer-slogan { font-family: var(--serif); font-size: 17px; color: #fff; margin: 12px 0 8px; }
.footer-desc { color: #a9bda3; font-size: 13px; }
.footer-addr { margin-top: 6px; }
.footer-qr { width: 96px; border-radius: 10px; margin-top: 8px; }
.qr-placeholder { display: inline-block; border: 1.5px dashed #6f8f74; color: #9db5a1; border-radius: 12px; padding: 14px 10px; margin-top: 8px; font-size: 12px; text-align: center; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.14); padding: 18px 0 26px; display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; color: #93a88e; font-size: 13px; }
.footer-heart { font-family: var(--serif); letter-spacing: 1px; }

/* ---------- 404 ---------- */
.err-wrap { text-align: center; padding: 120px 20px; }
.err-wrap .big { font-family: var(--serif); font-size: 90px; color: var(--green-soft); }
.err-wrap h1 { color: var(--green-deep); margin: 10px 0; }

/* ---------- AI 生成素材 ---------- */
.banner-img {
  width: 100%; display: block; border-radius: 24px; margin: 0 0 44px;
  box-shadow: var(--shadow); border: 1px solid #f0ecdf;
}
.footer-logo { width: 66px; height: 66px; border-radius: 20px; margin-bottom: 10px; box-shadow: 0 8px 20px rgba(0,0,0,.25); }
.login-logo { width: 76px; height: 76px; border-radius: 22px; margin: 0 auto 14px; display: block; box-shadow: var(--shadow); }