/* 汉水信息官网 · 全站样式 */
:root{
  --ink:#0E2A4E; --ink-2:#1B3A63; --brand:#1D6FE8; --brand-d:#1257C0;
  --accent:#00B4A6; --accent-soft:#E6FAF8;
  --muted:#64748B; --line:#E5EAF2; --soft:#F5F8FC; --white:#fff;
  --warn:#E8A33D; --danger:#D9433F; --ok:#2FA36B;
  --radius:12px; --radius-lg:18px;
  --shadow:0 2px 8px rgba(14,42,78,.06);
  --shadow-lg:0 12px 36px rgba(14,42,78,.12);
  --max:1200px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; font:16px/1.7 system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink); background:var(--white);
}
a{color:var(--brand); text-decoration:none}
a:hover{color:var(--brand-d)}
img{max-width:100%; height:auto; display:block}
h1,h2,h3,h4{line-height:1.3; margin:0 0 .6em; font-weight:700; letter-spacing:-.01em}
h1{font-size:40px} h2{font-size:30px} h3{font-size:21px} h4{font-size:17px}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em; padding-left:1.4em}
.container{max-width:var(--max); margin:0 auto; padding:0 24px}
.section{padding:72px 0}
.section-soft{background:var(--soft)}
.section-head{max-width:720px; margin:0 auto 44px; text-align:center}
.section-head .eyebrow{color:var(--brand); font-weight:600; font-size:14px; letter-spacing:.08em; text-transform:uppercase; margin-bottom:10px}
.section-head p{color:var(--muted); font-size:17px; margin:0}
.text-center{text-align:center}
.muted{color:var(--muted)}
.small{font-size:14px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:12px 24px; border-radius:8px; font-weight:600; font-size:15px;
  border:1px solid transparent; cursor:pointer; transition:.18s; white-space:nowrap;
}
.btn-primary{background:var(--brand); color:#fff}
.btn-primary:hover{background:var(--brand-d); color:#fff}
.btn-ghost{background:transparent; color:var(--ink); border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand); color:var(--brand)}
.btn-white{background:#fff; color:var(--ink)}
.btn-white:hover{background:#EEF3FA; color:var(--ink)}
.btn-block{display:flex; width:100%}
.btn-sm{padding:8px 16px; font-size:14px}

/* ---------- 页头 ---------- */
.site-header{
  position:sticky; top:0; z-index:80; background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px); border-bottom:1px solid var(--line);
}
.header-inner{display:flex; align-items:center; gap:32px; height:68px}
.logo{display:flex; align-items:center; gap:10px; font-weight:800; font-size:19px; color:var(--ink); flex-shrink:0}
.logo:hover{color:var(--ink)}
.logo-mark{
  width:34px; height:34px; border-radius:9px; background:linear-gradient(135deg,var(--brand),var(--accent));
  display:grid; place-items:center; color:#fff; font-weight:800; font-size:17px;
}
.main-nav{display:flex; gap:2px; margin:0; padding:0; list-style:none; flex:1}
.main-nav>li{position:relative}
.main-nav a{
  display:block; padding:10px 14px; font-size:15px; font-weight:500; color:var(--ink-2); border-radius:8px;
}
.main-nav>li>a:hover{background:var(--soft); color:var(--brand)}
.main-nav>li.active>a{color:var(--brand); font-weight:600}
.main-nav ul{
  display:none; position:absolute; top:100%; left:0; min-width:190px; margin:0; padding:8px; list-style:none;
  background:#fff; border:1px solid var(--line); border-radius:var(--radius); box-shadow:var(--shadow-lg);
}
.main-nav li:hover>ul{display:block}
.main-nav ul a{font-size:14px; padding:8px 12px; color:var(--ink-2)}
.header-cta{display:flex; gap:10px; align-items:center}
.nav-toggle{display:none; background:none; border:none; font-size:24px; cursor:pointer; color:var(--ink)}

@media(max-width:1080px){
  .main-nav{display:none}
  .main-nav.open{display:block; position:absolute; top:68px; left:0; right:0; background:#fff;
    border-bottom:1px solid var(--line); padding:12px; max-height:70vh; overflow:auto}
  .main-nav.open li{width:100%}
  .main-nav.open ul{display:block; position:static; box-shadow:none; border:none; padding-left:12px}
  .nav-toggle{display:block}
  .header-cta .btn-ghost{display:none}
}

/* ---------- Hero ---------- */
.hero{
  position:relative; padding:96px 0 84px; color:#fff; overflow:hidden;
  background:linear-gradient(135deg,#0E2A4E 0%,#17406F 55%,#1D6FE8 130%);
}
.hero::after{
  content:""; position:absolute; inset:0; opacity:.16; pointer-events:none;
  background:radial-gradient(circle at 78% 22%,#00B4A6 0,transparent 42%),
             radial-gradient(circle at 18% 78%,#1D6FE8 0,transparent 46%);
}
.hero .container{position:relative; z-index:2}
.hero h1{font-size:46px; margin-bottom:18px}
.hero p{font-size:18px; color:rgba(255,255,255,.86); max-width:660px; margin-bottom:30px}
.hero-actions{display:flex; gap:12px; flex-wrap:wrap}
.hero-meta{display:flex; gap:36px; flex-wrap:wrap; margin-top:44px; padding-top:28px; border-top:1px solid rgba(255,255,255,.18)}
.hero-meta div strong{display:block; font-size:28px; font-weight:800}
.hero-meta div span{font-size:13px; color:rgba(255,255,255,.72)}
@media(max-width:640px){ .hero{padding:64px 0 56px} .hero h1{font-size:30px} }

/* ---------- 卡片 / 网格 ---------- */
.grid{display:grid; gap:24px}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:1000px){ .g-3,.g-4{grid-template-columns:repeat(2,1fr)} }
@media(max-width:640px){ .g-2,.g-3,.g-4{grid-template-columns:1fr} }

.card{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius-lg);
  padding:28px; transition:.2s; display:flex; flex-direction:column;
}
.card:hover{border-color:#C9D9F2; box-shadow:var(--shadow-lg); transform:translateY(-2px)}
.card h3{margin-bottom:10px}
.card p{color:var(--muted); font-size:15px; margin-bottom:0}
.card-link{color:var(--brand); font-size:14px; font-weight:600; margin-top:16px; display:inline-flex; gap:6px; align-items:center}
.card-icon{
  width:46px; height:46px; border-radius:12px; background:var(--soft); display:grid; place-items:center;
  font-size:22px; margin-bottom:16px;
}
.card-list{margin:12px 0 0; padding:0; list-style:none; font-size:14px; color:var(--muted)}
.card-list li{padding:5px 0 5px 18px; position:relative}
.card-list li::before{content:""; position:absolute; left:0; top:13px; width:6px; height:6px; border-radius:50%; background:var(--brand)}

/* 服务线大卡 */
.svc-card{position:relative; overflow:hidden}
.svc-card .no{font-size:52px; font-weight:800; color:#EDF3FB; position:absolute; right:20px; top:8px; line-height:1}

/* ---------- 数字条 ---------- */
.stat-strip{background:var(--ink); color:#fff; padding:38px 0}
.stat-strip .grid{text-align:center}
.stat-strip strong{display:block; font-size:34px; font-weight:800; color:#fff}
.stat-strip span{font-size:13px; color:rgba(255,255,255,.7)}

/* ---------- 痛点 / 流程 ---------- */
.pain-item{padding:22px; border-left:3px solid var(--warn); background:#FFFBF3; border-radius:0 10px 10px 0; margin-bottom:14px}
.pain-item h4{margin-bottom:6px}
.pain-item p{margin:0; font-size:15px; color:var(--muted)}

.flow-item{display:flex; gap:18px; padding:20px 0; border-bottom:1px dashed var(--line)}
.flow-item:last-child{border:none}
.flow-no{
  flex-shrink:0; width:44px; height:44px; border-radius:50%; background:var(--brand); color:#fff;
  display:grid; place-items:center; font-weight:700; font-size:15px;
}
.flow-body h4{margin-bottom:4px}
.flow-body p{margin:0 0 6px; font-size:15px; color:var(--muted)}
.flow-meta{font-size:13px; color:var(--brand); display:flex; gap:16px; flex-wrap:wrap}

/* ---------- 表格 ---------- */
.table-wrap{overflow-x:auto; border:1px solid var(--line); border-radius:var(--radius); background:#fff}
table{width:100%; border-collapse:collapse; font-size:15px}
th,td{padding:13px 16px; text-align:left; border-bottom:1px solid var(--line)}
th{background:var(--soft); font-weight:600; font-size:14px; color:var(--ink-2); white-space:nowrap}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:#FAFCFF}
.inline-table th{width:130px; background:#fff}

/* ---------- 标签 ---------- */
.tag{
  display:inline-block; padding:3px 10px; border-radius:20px; font-size:12px; font-weight:600;
  background:var(--soft); color:var(--ink-2); margin:0 6px 6px 0;
}
.tag-brand{background:#E8F1FE; color:var(--brand)}
.tag-accent{background:var(--accent-soft); color:#00796D}
.tag-warn{background:#FDF3E3; color:#A9721C}
.tag-new{background:#FFE9E9; color:var(--danger)}
.chips{display:flex; flex-wrap:wrap; gap:8px}
.chip{padding:6px 14px; border:1px solid var(--line); border-radius:20px; font-size:14px; background:#fff; cursor:pointer}
.chip:hover{border-color:var(--brand)}
.chip.on{background:var(--brand); color:#fff; border-color:var(--brand)}

/* ---------- 价格 ---------- */
.price-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:24px}
@media(max-width:900px){ .price-grid{grid-template-columns:1fr} }
.price-card{border:1px solid var(--line); border-radius:var(--radius-lg); padding:30px; background:#fff; display:flex; flex-direction:column}
.price-card.rec{border:2px solid var(--brand); box-shadow:var(--shadow-lg); position:relative}
.price-card .badge{position:absolute; top:-12px; left:30px; background:var(--brand); color:#fff; font-size:12px; padding:3px 12px; border-radius:20px}
.price-card h3{font-size:19px}
.price-num{font-size:30px; font-weight:800; color:var(--ink); margin:6px 0}
.price-num small{font-size:14px; font-weight:500; color:var(--muted)}
.price-card ul{list-style:none; padding:0; margin:18px 0 24px; flex:1; font-size:14px}
.price-card ul li{padding:6px 0 6px 22px; position:relative; color:var(--muted)}
.price-card ul li::before{content:"✓"; position:absolute; left:0; color:var(--ok); font-weight:700}

/* ---------- FAQ ---------- */
.faq-item{border:1px solid var(--line); border-radius:var(--radius); margin-bottom:12px; background:#fff; overflow:hidden}
.faq-q{padding:16px 20px; cursor:pointer; font-weight:600; display:flex; justify-content:space-between; align-items:center; gap:12px}
.faq-q::after{content:"+"; font-size:20px; color:var(--brand); font-weight:700}
.faq-item.open .faq-q::after{content:"−"}
.faq-a{display:none; padding:0 20px 18px; color:var(--muted); font-size:15px}
.faq-item.open .faq-a{display:block}

/* ---------- 面包屑 ---------- */
.crumbs{font-size:13px; color:var(--muted); padding:18px 0}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand)}
.crumbs span{margin:0 6px; opacity:.5}

/* ---------- 表单 ---------- */
.form-row{display:grid; grid-template-columns:1fr 1fr; gap:16px}
@media(max-width:640px){ .form-row{grid-template-columns:1fr} }
.field{margin-bottom:16px}
.field label{display:block; font-size:14px; font-weight:600; margin-bottom:6px}
.field input,.field select,.field textarea{
  width:100%; padding:11px 14px; border:1px solid var(--line); border-radius:8px; font-size:15px;
  font-family:inherit; background:#fff; color:var(--ink);
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none; border-color:var(--brand); box-shadow:0 0 0 3px rgba(29,111,232,.12)}
.field .hint{font-size:12px; color:var(--muted); margin-top:5px}
.hp{position:absolute; left:-9999px; width:1px; height:1px; overflow:hidden}
.captcha-row{display:flex; gap:10px; align-items:center}
.captcha-row img{height:38px; border-radius:6px; cursor:pointer; border:1px solid var(--line)}
.alert{padding:12px 16px; border-radius:8px; font-size:14px; margin-bottom:16px}
.alert-ok{background:#E9F7F0; color:#1E7A50}
.alert-err{background:#FDECEC; color:#A33}
.alert-warn{background:#FDF3E3; color:#A9721C}

/* ---------- CTA 区 ---------- */
.cta-band{background:linear-gradient(120deg,var(--ink) 0%,#1B4A82 100%); color:#fff; padding:64px 0; text-align:center}
.cta-band h2{color:#fff}
.cta-band p{color:rgba(255,255,255,.8); margin-bottom:26px}

/* ---------- 案例 ---------- */
.case-card{display:flex; flex-direction:column}
.case-metrics{display:flex; gap:18px; flex-wrap:wrap; margin-top:14px; padding-top:14px; border-top:1px solid var(--line)}
.case-metrics div strong{font-size:20px; color:var(--brand); display:block}
.case-metrics div span{font-size:12px; color:var(--muted)}
.quote-box{background:var(--soft); border-left:4px solid var(--brand); padding:20px 24px; border-radius:0 12px 12px 0; margin:24px 0}
.quote-box p{font-size:17px; margin-bottom:8px}
.quote-box cite{font-size:14px; color:var(--muted); font-style:normal}

/* ---------- 课程 ---------- */
.course-grid{display:grid; grid-template-columns:1fr 340px; gap:36px; align-items:start}
@media(max-width:960px){ .course-grid{grid-template-columns:1fr} }
.sticky-card{position:sticky; top:88px}
.enroll-card{border:1px solid var(--line); border-radius:var(--radius-lg); padding:26px; box-shadow:var(--shadow-lg); background:#fff}
.enroll-card .price{font-size:32px; font-weight:800}
.outline-day{border:1px solid var(--line); border-radius:var(--radius); margin-bottom:16px; overflow:hidden}
.outline-day>summary{padding:16px 20px; cursor:pointer; font-weight:700; background:var(--soft); list-style:none}
.outline-day>summary::-webkit-details-marker{display:none}
.outline-day>summary::after{content:"▾"; float:right; color:var(--brand)}
.outline-day[open]>summary::after{content:"▴"}
.outline-mod{padding:14px 20px; border-top:1px solid var(--line)}
.outline-mod h5{margin:0 0 6px; font-size:15px}
.outline-mod .dur{font-size:12px; color:var(--brand); margin-left:8px}
.outline-mod ul{margin:6px 0 0; padding-left:18px; font-size:14px; color:var(--muted)}
.seats{font-weight:700}
.seats-ok{color:var(--ok)} .seats-few{color:var(--warn)} .seats-full{color:var(--muted)}
.teacher-card{display:flex; gap:18px; align-items:flex-start; border:1px solid var(--line); border-radius:var(--radius-lg); padding:24px}
.teacher-avatar{width:72px; height:72px; border-radius:50%; background:var(--soft); display:grid; place-items:center; font-size:26px; font-weight:700; color:var(--brand); flex-shrink:0}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink); color:rgba(255,255,255,.72); padding:56px 0 24px; margin-top:0}
.site-footer h4{color:#fff; font-size:15px; margin-bottom:14px}
.site-footer a{color:rgba(255,255,255,.7); font-size:14px}
.site-footer a:hover{color:#fff}
.footer-grid{display:grid; grid-template-columns:1.6fr repeat(4,1fr); gap:32px}
@media(max-width:900px){ .footer-grid{grid-template-columns:1fr 1fr} }
@media(max-width:560px){ .footer-grid{grid-template-columns:1fr} }
.footer-list{list-style:none; margin:0; padding:0}
.footer-list li{margin-bottom:8px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12); margin-top:36px; padding-top:20px; font-size:13px; display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap}

/* ---------- 分页 ---------- */
.pager{display:flex; gap:6px; justify-content:center; margin-top:36px; flex-wrap:wrap}
.pager a,.pager span{padding:8px 14px; border:1px solid var(--line); border-radius:8px; font-size:14px; color:var(--ink-2)}
.pager a:hover{border-color:var(--brand); color:var(--brand)}
.pager .on{background:var(--brand); color:#fff; border-color:var(--brand)}

/* ---------- 文章正文 ---------- */
.prose{max-width:760px; margin:0 auto}
.prose h2{margin-top:36px; font-size:24px}
.prose h3{margin-top:26px}
.prose p{font-size:16px; color:#33445C}
.prose img{border-radius:12px; margin:20px 0}
.prose blockquote{border-left:4px solid var(--brand); margin:20px 0; padding:6px 0 6px 18px; color:var(--muted)}

/* ---------- 工具页 ---------- */
.tool-box{border:1px solid var(--line); border-radius:var(--radius-lg); padding:32px; background:#fff}
.tool-q{margin-bottom:22px; padding-bottom:20px; border-bottom:1px dashed var(--line)}
.tool-q:last-of-type{border:none}
.tool-q p{margin:0 0 10px; font-weight:600}
.tool-opts{display:flex; gap:10px; flex-wrap:wrap}
.tool-opt{padding:9px 16px; border:1px solid var(--line); border-radius:8px; cursor:pointer; font-size:14px; background:#fff}
.tool-opt.on{background:var(--brand); color:#fff; border-color:var(--brand)}
.tool-result{margin-top:26px; padding:24px; background:var(--soft); border-radius:var(--radius); display:none}
.tool-result.show{display:block}

/* ---------- 后台 ---------- */
.admin-body{background:var(--soft); min-height:100vh}
.admin-wrap{display:flex; min-height:100vh}
.admin-side{width:220px; background:var(--ink); color:#fff; flex-shrink:0; position:sticky; top:0; height:100vh; overflow:auto}
.admin-side .brand{padding:20px; font-weight:800; font-size:17px; border-bottom:1px solid rgba(255,255,255,.1)}
.admin-side ul{list-style:none; margin:0; padding:8px}
.admin-side a{display:block; padding:10px 14px; color:rgba(255,255,255,.75); border-radius:8px; font-size:14px}
.admin-side a:hover,.admin-side a.on{background:rgba(255,255,255,.12); color:#fff}
.admin-main{flex:1; min-width:0}
.admin-top{background:#fff; border-bottom:1px solid var(--line); padding:14px 24px; display:flex; justify-content:space-between; align-items:center}
.admin-content{padding:24px}
.admin-card{background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:22px; margin-bottom:20px}
.admin-card h3{margin-bottom:16px; font-size:17px}
.admin-table{font-size:14px}
.admin-table td,.admin-table th{padding:10px 12px}
.badge{padding:2px 8px; border-radius:12px; font-size:12px; background:var(--soft); color:var(--muted)}
.badge-on{background:#E9F7F0; color:#1E7A50}
.badge-off{background:#F1F3F6; color:#888}
.stat-cards{display:grid; grid-template-columns:repeat(4,1fr); gap:16px; margin-bottom:20px}
@media(max-width:900px){ .stat-cards{grid-template-columns:1fr 1fr} }
.stat-card{background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:20px}
.stat-card strong{display:block; font-size:28px; font-weight:800}
.stat-card span{font-size:13px; color:var(--muted)}
.admin-bar{display:flex; gap:10px; margin-bottom:16px; flex-wrap:wrap; align-items:center}
.admin-bar input,.admin-bar select{padding:8px 12px; border:1px solid var(--line); border-radius:8px; font-size:14px}
.login-wrap{min-height:100vh; display:grid; place-items:center; background:linear-gradient(135deg,#0E2A4E,#1D6FE8)}
.login-box{background:#fff; border-radius:var(--radius-lg); padding:40px; width:380px; box-shadow:var(--shadow-lg)}
.login-box h2{text-align:center; margin-bottom:24px; font-size:22px}
.media-grid{display:grid; grid-template-columns:repeat(6,1fr); gap:12px}
@media(max-width:900px){ .media-grid{grid-template-columns:repeat(3,1fr)} }
.media-item{border:1px solid var(--line); border-radius:10px; overflow:hidden; background:#fff; position:relative}
.media-item img{width:100%; height:90px; object-fit:cover; background:var(--soft)}
.media-item .mi-name{font-size:11px; padding:6px; color:var(--muted); word-break:break-all}
.media-item .mi-del{position:absolute; top:4px; right:4px; background:rgba(0,0,0,.6); color:#fff; border:none; border-radius:6px; padding:2px 7px; cursor:pointer; font-size:12px}
.help{font-size:13px; color:var(--muted); margin-top:8px; line-height:1.6}
pre.json-hint{background:#0E2A4E; color:#B8D4F5; padding:12px; border-radius:8px; font-size:12px; overflow:auto; margin:6px 0 0}