/* 滴灌通 · 样式系统 —— 农业绿 + 水滴蓝 主题，移动优先响应式 */
:root{
  --green:#15803d; --green-d:#14532d; --green-l:#dcfce7;
  --blue:#0369a1; --blue-l:#e0f2fe; --sky:#0ea5e9;
  --amber:#b45309; --amber-l:#fef3c7;
  --red:#b91c1c; --red-l:#fee2e2;
  --ink:#0f172a; --ink-2:#334155; --ink-3:#64748b;
  --bg:#f4f7f2; --card:#ffffff; --line:#e2e8f0;
  --radius:16px; --shadow:0 1px 2px rgba(15,23,42,.05),0 8px 24px -12px rgba(15,23,42,.12);
  --maxw:1120px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--blue)}
button{font-family:inherit}
.skip-link{position:absolute;left:-9999px;top:0;background:#fff;padding:8px 16px;z-index:99}
.skip-link:focus{left:8px}

/* ── 头部 ── */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{max-width:var(--maxw);margin:0 auto;padding:0 16px;display:flex;align-items:center;justify-content:space-between;gap:12px;height:60px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:17px;letter-spacing:1px}
.brand-text i{font-style:normal;font-size:11px;color:var(--ink-3)}
.main-nav{display:flex;gap:2px;flex-wrap:wrap}
.main-nav a{display:block;padding:8px 12px;border-radius:10px;text-decoration:none;color:var(--ink-2);font-size:14.5px;font-weight:500;white-space:nowrap}
.main-nav a:hover{background:var(--green-l);color:var(--green-d)}
.main-nav a.active{background:var(--green);color:#fff}
.nav-toggle{display:none;background:none;border:0;width:44px;height:44px;flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media (max-width:900px){
  .nav-toggle{display:flex}
  .main-nav{display:none;position:absolute;top:60px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;padding:8px 12px 14px;box-shadow:var(--shadow)}
  .main-nav.open{display:flex}
  .main-nav a{padding:12px 14px;border-radius:12px;font-size:16px}
}

/* ── 版式 ── */
#app{max-width:var(--maxw);margin:0 auto;padding:0 16px 64px;min-height:70vh;outline:none}
.page-title{margin:34px 0 6px;font-size:clamp(24px,4.5vw,34px);letter-spacing:1px}
.page-sub{color:var(--ink-3);margin:0 0 26px;font-size:15px}
h2.sec{font-size:21px;margin:38px 0 14px;display:flex;align-items:center;gap:10px}
h2.sec::before{content:"";width:6px;height:22px;border-radius:3px;background:linear-gradient(180deg,var(--green),var(--sky))}
h3{font-size:17px;margin:18px 0 8px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;margin:14px 0}
.grid{display:grid;gap:14px}
.grid.c2{grid-template-columns:repeat(2,1fr)}
.grid.c3{grid-template-columns:repeat(3,1fr)}
.grid.c4{grid-template-columns:repeat(4,1fr)}
@media (max-width:760px){.grid.c3,.grid.c4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.grid.c2,.grid.c3,.grid.c4{grid-template-columns:1fr}}
.muted{color:var(--ink-3);font-size:13.5px}
.small{font-size:13px}
.tag{display:inline-block;padding:2px 10px;border-radius:999px;font-size:12px;background:var(--green-l);color:var(--green-d);font-weight:600}
.tag.blue{background:var(--blue-l);color:var(--blue)}
.tag.amber{background:var(--amber-l);color:var(--amber)}
.tag.red{background:var(--red-l);color:var(--red)}
.callout{border-left:4px solid var(--sky);background:var(--blue-l);border-radius:0 12px 12px 0;padding:12px 16px;margin:14px 0;font-size:14.5px}
.callout.warn{border-color:#f59e0b;background:var(--amber-l)}
.callout.danger{border-color:#ef4444;background:var(--red-l)}

/* ── 表格防溢出 ── */
.card{min-width:0;box-sizing:border-box}     /* 关键：允许 grid 子项收缩 */
.table-wrap{overflow-x:auto;max-width:100%;-webkit-overflow-scrolling:touch}
table{width:100%;table-layout:auto;border-collapse:collapse}
th,td{overflow-wrap:anywhere;word-break:break-word;white-space:normal}

/* ── Hero ── */
.hero{position:relative;border-radius:calc(var(--radius) + 6px);overflow:hidden;margin-top:22px;color:#fff;box-shadow:var(--shadow)}
.hero img{width:100%;height:clamp(280px,46vw,440px);object-fit:cover}
.hero .veil{position:absolute;inset:0;background:linear-gradient(100deg,rgba(6,40,18,.82) 20%,rgba(6,40,18,.35) 65%,rgba(3,60,90,.35))}
.hero .hero-text{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;padding:clamp(18px,5vw,52px)}
.hero h1{font-size:clamp(26px,5.2vw,44px);margin:0 0 10px;letter-spacing:2px;text-shadow:0 2px 12px rgba(0,0,0,.35)}
.hero p{margin:0;max-width:560px;font-size:clamp(13.5px,1.8vw,16.5px);opacity:.95}
.hero .hero-tags{margin-top:16px;display:flex;gap:8px;flex-wrap:wrap}
.hero .hero-tags span{background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.35);backdrop-filter:blur(4px);padding:4px 12px;border-radius:999px;font-size:12.5px}
.hero .cta{margin-top:22px;display:flex;gap:10px;flex-wrap:wrap}
.hero .cta a{padding:10px 22px;border-radius:999px;text-decoration:none;font-weight:600;font-size:15px}
.hero .cta .go{background:#fff;color:var(--green-d)}
.hero .cta .ghost{border:1.5px solid rgba(255,255,255,.7);color:#fff}

/* ── 统计数字 ── */
.stats{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin:22px 0}
@media (max-width:900px){.stats{grid-template-columns:repeat(3,1fr)}}
@media (max-width:520px){.stats{grid-template-columns:repeat(2,1fr)}}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px 10px;text-align:center;box-shadow:var(--shadow)}
.stat b{display:block;font-size:22px;background:linear-gradient(90deg,var(--green),var(--sky));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:12.5px;color:var(--ink-3)}

/* ── 功能入口卡片 ── */
.feature{display:block;text-decoration:none;color:inherit;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);transition:.2s;position:relative;overflow:hidden}
.feature:hover{transform:translateY(-3px);border-color:var(--green)}
.feature .ico{font-size:26px}
.feature b{display:block;margin:8px 0 4px;font-size:16px}
.feature p{margin:0;font-size:13px;color:var(--ink-3);line-height:1.6}
.feature::after{content:"→";position:absolute;right:14px;bottom:10px;color:var(--green);font-weight:700;opacity:0;transition:.2s}
.feature:hover::after{opacity:1;transform:translateX(3px)}

/* ── 表格 ── */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);box-shadow:var(--shadow);margin:12px 0}
table{border-collapse:collapse;width:100%;font-size:14px;min-width:560px}
th,td{padding:10px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
thead th{background:linear-gradient(90deg,var(--green-l),var(--blue-l));color:var(--green-d);font-weight:700;white-space:nowrap;position:sticky;top:0}
tbody tr:hover{background:#f0fdf4}
tbody tr:last-child td{border-bottom:0}
td.sym{font-family:Consolas,Menlo,monospace;color:var(--blue);white-space:nowrap}

/* ── 筛选/搜索 ── */
.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:16px 0}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{border:1px solid var(--line);background:#fff;border-radius:999px;padding:6px 14px;font-size:13.5px;cursor:pointer;color:var(--ink-2);transition:.15s}
.chip:hover{border-color:var(--green)}
.chip.on{background:var(--green);border-color:var(--green);color:#fff;font-weight:600}
.search{flex:1;min-width:200px;display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 16px}
.search input{border:0;outline:0;flex:1;font-size:14.5px;background:transparent;font-family:inherit}
select,input[type=number],input[type=text]{border:1px solid var(--line);border-radius:10px;padding:8px 10px;font-size:14.5px;font-family:inherit;background:#fff;color:var(--ink)}
select:focus,input:focus{border-color:var(--sky);outline:2px solid rgba(14,165,233,.2)}

/* ── 提示条（48条） ── */
.tip{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;margin:10px 0;box-shadow:var(--shadow);display:flex;gap:14px}
.tip .no{flex:none;width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--green),#16a34a);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px}
.tip.hot .no{background:linear-gradient(135deg,#b91c1c,#ef4444)}
.tip b{display:block;font-size:15.5px}
.tip p{margin:4px 0 0;color:var(--ink-2);font-size:14px}
.tip .fav{margin-left:auto;flex:none;background:none;border:0;font-size:20px;cursor:pointer;color:#cbd5e1;line-height:1;padding:4px}
.tip .fav.on{color:#f59e0b}

/* ── 审计清单 ── */
.progress{height:10px;background:var(--line);border-radius:999px;overflow:hidden;margin:6px 0}
.progress i{display:block;height:100%;background:linear-gradient(90deg,var(--green),var(--sky));border-radius:999px;transition:width .3s}
.check{display:flex;gap:12px;padding:12px 14px;border-bottom:1px dashed var(--line);align-items:flex-start;cursor:pointer}
.check:last-child{border-bottom:0}
.check input{width:20px;height:20px;margin-top:4px;accent-color:var(--green);flex:none;cursor:pointer}
.check.done .c-body{opacity:.55}
.check.done .c-item{text-decoration:line-through}
.c-item{font-weight:600;font-size:14.5px}
.c-meta{font-size:13px;color:var(--ink-3);margin-top:2px}
.c-meta b{color:var(--green-d)}
.c-meta em{font-style:normal;color:var(--red)}
.dim-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.dim-head .progress{flex:1;min-width:120px;margin:0}

/* ── 计算器 ── */
.calc-grid{display:grid;grid-template-columns:340px 1fr;gap:16px;align-items:start}
@media (max-width:860px){.calc-grid{grid-template-columns:1fr}}
.form-row{display:flex;justify-content:space-between;align-items:center;gap:10px;margin:10px 0}
.form-row label{font-size:13.5px;color:var(--ink-2)}
.form-row label i{font-style:normal;color:var(--ink-3);font-size:12px}
.form-row input,.form-row select{width:130px;text-align:right}
.result{background:linear-gradient(135deg,#052e16,#0c4a6e);color:#e2e8f0;border-radius:var(--radius);padding:18px 20px;font-family:Consolas,Menlo,monospace;font-size:14px;line-height:2;overflow-x:auto}
.result b{color:#4ade80}
.result .ok{color:#4ade80}.result .bad{color:#f87171}
.formula{background:#f8fafc;border:1px dashed #cbd5e1;border-radius:10px;padding:8px 14px;font-family:Consolas,Menlo,monospace;font-size:13px;color:var(--ink-2);margin:8px 0;overflow-x:auto}
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin:18px 0 4px}
.tab{border:1px solid var(--line);background:#fff;border-bottom:0;border-radius:12px 12px 0 0;padding:9px 16px;font-size:14px;cursor:pointer;font-weight:600;color:var(--ink-3)}
.tab.on{background:var(--green);color:#fff;border-color:var(--green)}

/* ── 科普示意图 ── */
.diagram-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px;margin:14px 0}
.diagram-card svg{width:100%;height:auto}
.diagram-card .part{cursor:pointer}
.diagram-card .part:hover .shape,.diagram-card .part.on .shape{filter:brightness(1.12) drop-shadow(0 0 6px rgba(14,165,233,.7))}
.diagram-info{min-height:74px;background:var(--blue-l);border-radius:12px;padding:12px 16px;margin-top:10px;font-size:14px}
.diagram-info b{color:var(--blue)}

/* ── 诊断 ── */
.doc-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);padding:16px 18px;margin:10px 0;box-shadow:var(--shadow)}
.doc-row{display:grid;grid-template-columns:88px 1fr;gap:6px 12px;font-size:14px;margin-top:8px}
.doc-row dt{color:var(--ink-3);font-weight:600}
.doc-row dd{margin:0}
.lv-重{border-left:5px solid #ef4444}
.lv-中{border-left:5px solid #f59e0b}
.lv-轻{border-left:5px solid #22c55e}

/* ── 智能灌溉 ── */
.wx-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:8px;margin:12px 0}
@media (max-width:760px){.wx-grid{grid-template-columns:repeat(4,1fr)}}
.wx-day{background:#f8fafc;border:1px solid var(--line);border-radius:12px;padding:8px 6px;text-align:center;font-size:12.5px}
.wx-day b{display:block;font-size:15px;color:var(--blue)}
.wx-day.past{opacity:.55}
.wx-day .et{color:var(--amber);font-weight:700}
.et-chart{width:100%;height:auto}
.advice{border-radius:var(--radius);padding:18px 20px;margin:14px 0;color:#fff;background:linear-gradient(120deg,var(--green-d),#075985)}
.advice b{font-size:17px}
.advice .big{font-size:30px;font-weight:800;margin:4px 0}

/* ── 页脚 ── */
.site-footer{background:#0f2419;color:#a7c4b2;margin-top:40px}
.footer-inner{max-width:var(--maxw);margin:0 auto;padding:28px 16px;font-size:13px;line-height:1.9}
.site-footer b{color:#e7f6ec;font-size:15px}
.site-footer a{color:#7dd3fc}
.footer-note{color:#5c7a68;font-size:12px}

/* ── 打印 ── */
@media print{
  .site-header,.site-footer,.toolbar,.nav-toggle,.hero .cta,.fav{display:none!important}
  body{background:#fff}
  .card,.table-wrap{box-shadow:none;border-color:#999}
  #app{max-width:none;padding:0}
}
/* 动效 */
@media (prefers-reduced-motion:no-preference){
  #app{animation:fadein .3s ease}
  @keyframes fadein{from{opacity:0;transform:translateY(6px)}to{opacity:1}}
}