/* 学习规划站 — 公共样式（与常青知书首页风格一致：森林主题、圆角、柔和配色） */
:root{
  --paper:#faf7f0; --surface:#fffdf8; --ink:#2d2a24; --muted:#8b8377;
  --gold:#c9a45c; --gold-deep:#8a5a00; --green:#5f9e6e; --green-deep:#2f6b3c; --green-light:#e6f2e8;
  --blue:#5b7fa6; --blue-deep:#3d5b80;
  --line:rgba(216,200,175,.55);
  --shadow:0 2px 10px rgba(160,130,80,.10);
  --shadow-lg:0 14px 40px rgba(120,90,40,.16);
}
*{box-sizing:border-box;margin:0}
body{background:var(--paper);color:var(--ink);line-height:1.65;
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","Helvetica Neue","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}

/* 导航栏 */
nav{position:sticky;top:0;z-index:50;background:rgba(250,247,240,.85);
  backdrop-filter:blur(20px) saturate(1.6);border-bottom:1px solid var(--line)}
nav .wrap{display:flex;align-items:center;gap:18px;height:60px;flex-wrap:wrap}
.logo{font-size:17px;font-weight:700;letter-spacing:-.2px;display:flex;align-items:center;gap:8px;color:var(--ink);text-decoration:none}
.logo .dot{width:9px;height:9px;border-radius:3px;background:var(--green)}
nav .nl{color:var(--muted);text-decoration:none;font-size:14px;font-weight:500;padding:6px 2px;transition:color .15s;cursor:pointer;position:relative}
nav .nl:hover{color:var(--ink)}
.nav-dd{position:relative}
.nav-dd .menu{position:absolute;top:100%;left:0;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:10px;min-width:180px;box-shadow:var(--shadow-lg);display:none;flex-direction:column;gap:4px;z-index:60}
.nav-dd:hover .menu,.nav-dd.open .menu{display:flex}
.nav-dd .menu a{color:var(--ink);text-decoration:none;font-size:13.5px;padding:6px 10px;border-radius:6px;display:block}
.nav-dd .menu a:hover{background:var(--green-light);color:var(--green-deep)}
.nav-dd .menu .group-label{font-size:11px;color:var(--muted);font-weight:600;padding:6px 10px 2px;letter-spacing:.3px}

/* 主内容 */
main{padding:30px 0 60px}
.breadcrumb{font-size:13px;color:var(--muted);padding:16px 0;display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.breadcrumb a{color:var(--muted);text-decoration:none}
.breadcrumb a:hover{color:var(--green-deep)}
.breadcrumb .sep{color:var(--line)}

.sec-title{font-size:28px;font-weight:700;letter-spacing:-.4px;margin-bottom:10px;line-height:1.3}
.sec-sub{color:var(--muted);font-size:15px;margin-bottom:18px}
.section-header{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:30px;box-shadow:var(--shadow);margin-bottom:24px}
.section-header .positioning{color:var(--green-deep);font-size:14.5px;font-weight:600;margin:10px 0 14px}
.section-header .key-tips{background:var(--green-light);border:1px solid rgba(95,158,110,.25);border-radius:12px;padding:12px 18px;font-size:13.5px}
.section-header .key-tips ul{padding-left:20px;margin-top:4px}
.section-header .key-tips li{margin-bottom:4px;color:var(--ink)}

/* 折叠面板（年级页/主题页模块） */
.modules{margin-top:18px}
.module{background:var(--surface);border:1px solid var(--line);border-radius:16px;margin-bottom:12px;box-shadow:var(--shadow);overflow:hidden}
.module-head{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;cursor:pointer;user-select:none}
.module-head:hover{background:rgba(95,158,110,.04)}
.module-head .title{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:650;color:var(--ink)}
.module-head .ico{font-size:22px}
.module-head .arrow{transition:transform .2s;color:var(--muted);font-size:14px}
.module.open .module-head .arrow{transform:rotate(180deg)}
.module-body{padding:0 22px 22px;display:none}
.module.open .module-body{display:block}
.points-list{display:flex;flex-direction:column;gap:16px}
.point{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.point .pt-title{font-weight:600;font-size:15px;color:var(--ink);margin-bottom:6px;display:flex;align-items:baseline;gap:8px}
.point .pt-title::before{content:"•";color:var(--green);font-size:18px}
.point .pt-content{font-size:14px;color:var(--ink);line-height:1.75;margin-bottom:8px}
.point .pt-source{display:inline-block;font-size:11.5px;color:var(--gold-deep);background:#fdf6e7;border:1px solid #ecd9ae;border-radius:999px;padding:2px 10px}
.point .pt-resources{margin-top:8px;display:flex;flex-wrap:wrap;gap:6px}
.point .pt-resources .r-tag{font-size:12px;background:var(--blue);color:#fff;padding:2px 10px;border-radius:999px}

/* 首页 — 年级卡片 */
.hero{text-align:center;padding:50px 0 30px}
.hero .stage{display:inline-block;background:var(--green-light);border:1px solid rgba(95,158,110,.3);border-radius:999px;padding:5px 18px;font-size:12.5px;letter-spacing:1px;color:var(--green-deep);margin-bottom:18px;font-weight:600}
.hero h1{font-size:38px;font-weight:800;letter-spacing:-.6px;margin-bottom:14px;line-height:1.18}
.hero .slogan{color:var(--muted);font-size:16px;font-weight:400;max-width:640px;margin:0 auto 28px;line-height:1.75}
.hero .links{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:6px;border:none;cursor:pointer;
  border-radius:999px;padding:10px 22px;font-size:14px;font-weight:600;
  font-family:inherit;text-decoration:none;transition:transform .12s, box-shadow .15s;color:inherit}
.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow)}
.btn-green{background:linear-gradient(135deg,#7ab586,#5f9e6e);color:#fff;box-shadow:0 2px 8px rgba(95,158,110,.35)}
.btn-ghost{background:var(--surface);border:1px solid var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--green)}

.grade-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:12px;padding:8px 0 26px}
@media(max-width:1024px){.grade-grid{grid-template-columns:repeat(4,1fr)}}
@media(max-width:680px){.grade-grid{grid-template-columns:repeat(2,1fr)}}
.grade-card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:18px 14px;text-align:center;text-decoration:none;color:var(--ink);box-shadow:var(--shadow);transition:transform .18s,box-shadow .2s}
.grade-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--green)}
.grade-card .ico{font-size:28px;margin-bottom:8px}
.grade-card .gt{font-size:14.5px;font-weight:650;margin-bottom:4px}
.grade-card .age{font-size:12px;color:var(--muted)}

.topic-cats{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;padding:8px 0 26px}
@media(max-width:1024px){.topic-cats{grid-template-columns:repeat(3,1fr)}}
@media(max-width:680px){.topic-cats{grid-template-columns:repeat(2,1fr)}}
.cat-card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:20px 18px;box-shadow:var(--shadow);cursor:pointer;color:var(--ink);transition:transform .18s,box-shadow .2s}
.cat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.cat-card .head{display:flex;align-items:center;gap:10px;margin-bottom:12px;text-decoration:none;color:var(--ink)}
.cat-card .ico{font-size:24px}
.cat-card .ct{font-size:15px;font-weight:700}
.cat-card ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:6px}
.cat-card li{font-size:13.5px}
.cat-card li a{color:var(--green-deep);text-decoration:none;font-weight:500}
.cat-card li a:hover{text-decoration:underline}

h2.section-h{font-size:22px;font-weight:700;margin:40px 0 14px;letter-spacing:-.3px}
.section-sub{color:var(--muted);font-size:14px;margin-bottom:16px}

.recommend{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:30px}
@media(max-width:680px){.recommend{grid-template-columns:1fr}}
.rec-card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:var(--shadow);text-decoration:none;color:var(--ink);display:block}
.rec-card:hover{border-color:var(--green)}
.rec-card .ti{font-size:20px;margin-bottom:8px}
.rec-card b{font-size:14.5px;display:block;margin-bottom:6px}
.rec-card p{font-size:13px;color:var(--muted);line-height:1.7;margin:0}

/* 时间轴 */
.timeline-bar{display:flex;justify-content:space-between;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:18px 12px;margin:18px 0;box-shadow:var(--shadow);overflow-x:auto;gap:6px}
.t-node{flex:1;min-width:120px;text-align:center;padding:10px 8px;border-radius:12px;cursor:pointer;text-decoration:none;color:var(--ink);transition:all .15s;border:2px solid transparent}
.t-node:hover{background:var(--green-light);border-color:var(--green)}
.t-node .age{font-size:12px;color:var(--muted);margin-bottom:4px}
.t-node .ph{font-size:14px;font-weight:650}

.timeline-detail{margin-top:26px}
.t-phase{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:22px;margin-bottom:14px;box-shadow:var(--shadow)}
.t-phase h3{font-size:17px;margin-bottom:4px;color:var(--green-deep);display:flex;align-items:center;gap:8px}
.t-phase .age{font-size:13px;color:var(--muted);margin-bottom:12px}
.t-phase ul{padding-left:22px}
.t-phase li{margin-bottom:6px;font-size:14px}
.t-phase .ms-priority{display:inline-block;font-size:11px;padding:1px 8px;border-radius:999px;margin-right:6px;font-weight:600}
.t-phase .priority-high{background:var(--green-light);color:var(--green-deep)}
.t-phase .priority-medium{background:#f3ecdb;color:var(--gold-deep)}
.t-phase .priority-low{background:#eee;color:var(--muted)}

/* 主题页核心逻辑 */
.core-logic{background:linear-gradient(135deg,var(--green-light),#fffdf8);border:1px solid rgba(95,158,110,.25);border-radius:16px;padding:20px 24px;margin-bottom:22px;font-size:14.5px;line-height:1.8}
.core-logic b{color:var(--green-deep)}
.key-points{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:26px}
@media(max-width:680px){.key-points{grid-template-columns:1fr}}
.kp{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 16px;font-size:14px;color:var(--ink);display:flex;gap:10px;align-items:flex-start}
.kp::before{content:"▸";color:var(--green);font-weight:700;flex-shrink:0}

.grade-block{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:22px;margin-bottom:14px;box-shadow:var(--shadow);scroll-margin-top:80px}
.grade-block h3{font-size:16px;font-weight:700;color:var(--green-deep);margin-bottom:4px}
.grade-block .age{font-size:13px;color:var(--muted);margin-bottom:14px;display:block}

.faq{margin-top:30px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:12px;margin-bottom:10px;overflow:hidden}
.faq-q{padding:14px 18px;cursor:pointer;font-weight:600;font-size:14.5px;display:flex;justify-content:space-between;align-items:center}
.faq-q::after{content:"+";color:var(--muted);font-size:18px;font-weight:400}
.faq-item.open .faq-q::after{content:"−"}
.faq-a{padding:0 18px 14px;display:none;font-size:13.5px;color:var(--ink);line-height:1.75}
.faq-item.open .faq-a{display:block}
.faq-a .source{display:inline-block;font-size:11px;color:var(--gold-deep);background:#fdf6e7;border:1px solid #ecd9ae;border-radius:999px;padding:1px 8px;margin-top:6px}

/* 资源页 */
.resource-section{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:22px;margin-bottom:16px;box-shadow:var(--shadow)}
.resource-section h3{font-size:17px;font-weight:700;color:var(--green-deep);margin-bottom:6px}
.resource-section .desc{color:var(--muted);font-size:13.5px;margin-bottom:14px}
.resource-section ul{padding-left:0;list-style:none}
.resource-section li{padding:10px 0;border-bottom:1px solid var(--line);font-size:14px;display:flex;flex-wrap:wrap;gap:6px;align-items:baseline}
.resource-section li:last-child{border-bottom:none}
.resource-section li b{font-weight:650;color:var(--ink)}
.resource-section li .meta{font-size:12px;color:var(--muted);margin-left:auto}
.resource-section li .tag{font-size:11.5px;background:var(--blue);color:#fff;padding:2px 8px;border-radius:999px}
.resource-section li .source{font-size:11px;color:var(--gold-deep)}
.resource-table-wrap{overflow-x:auto;margin-top:12px}
.resource-table{width:100%;border-collapse:collapse;font-size:13.5px}
.resource-table th{background:var(--green-light);color:var(--green-deep);padding:10px;text-align:left;font-weight:600;border:1px solid var(--line)}
.resource-table td{padding:10px;border:1px solid var(--line)}
.resource-table tr:nth-child(even){background:var(--paper)}

/* 关于/指南/搜索页 */
.simple-page{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:30px;box-shadow:var(--shadow);margin-bottom:24px}
.simple-page h3{font-size:17px;color:var(--green-deep);margin:18px 0 8px}
.simple-page p{font-size:14px;line-height:1.8;margin-bottom:10px;color:var(--ink)}
.simple-page ul{padding-left:22px;font-size:14px;line-height:1.9}
.simple-page li{margin-bottom:4px}

.search-box{display:flex;gap:8px;margin-bottom:24px}
.search-box input{flex:1;padding:12px 16px;border:1px solid var(--line);border-radius:999px;font-size:15px;background:var(--surface);font-family:inherit;color:var(--ink);outline:none}
.search-box input:focus{border-color:var(--green)}
.search-box button{padding:12px 24px;background:var(--green);color:#fff;border:none;border-radius:999px;font-size:14px;font-weight:600;cursor:pointer;font-family:inherit}
.search-result{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin-bottom:10px}
.search-result b{font-size:15px;display:block;margin-bottom:4px}
.search-result a{color:var(--green-deep);text-decoration:none}
.search-result a:hover{text-decoration:underline}
.search-result .snippet{color:var(--muted);font-size:13px;line-height:1.7}

/* 下一阶段预告 */
.next-banner{background:linear-gradient(135deg,#fffdf8,var(--green-light));border:1px solid rgba(95,158,110,.25);border-radius:16px;padding:18px 22px;margin-top:24px;display:flex;align-items:center;gap:14px}
.next-banner .lbl{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:1px;font-weight:600}
.next-banner .next-title{font-size:16px;font-weight:650;color:var(--green-deep);text-decoration:none}
.next-banner .next-title:hover{text-decoration:underline}
.next-banner .preview{font-size:13.5px;color:var(--muted);margin-top:4px}

/* 移动端汉堡菜单 */
.hamburger{display:none;background:none;border:none;font-size:22px;cursor:pointer;color:var(--ink);padding:4px 8px}
@media(max-width:768px){
  .hamburger{display:block}
  nav .wrap{gap:8px}
  .nav-dd,.nav-links{display:none}
  .nav-links.mobile-open{display:flex;flex-direction:column;position:absolute;top:60px;left:0;right:0;background:var(--surface);border-bottom:1px solid var(--line);padding:14px 24px;gap:8px;box-shadow:var(--shadow-lg)}
  .hero h1{font-size:30px}
  .section-header{padding:20px}
}

/* 页脚 */
footer{border-top:1px solid var(--line);padding:26px 0 40px;text-align:center;color:var(--muted);font-size:12.5px;margin-top:40px}
footer a{color:inherit;text-decoration:none;margin:0 6px}
footer a:hover{color:var(--green-deep)}

/* 表格的滚动 */
.scroll-content{overflow-x: auto}

/* 锚点高亮 */
.anchor-flash{animation: flash 1.6s ease-out}
@keyframes flash{0%{background:var(--green-light)}100%{background:transparent}}
/* 政策类页面时效提示 */
.policy-notice{background:#fff8e7;border:1px solid rgba(201,164,92,.35);border-radius:12px;padding:14px 18px;font-size:13.5px;margin-bottom:20px;color:var(--ink);line-height:1.7}
.policy-notice b{color:var(--gold-deep)}
@media(max-width:768px){.policy-notice{padding:12px 14px;font-size:13px;margin-bottom:16px}}


/* ===== 清爽精简层 · 2026-09-30（内容与来源标注全部保留，仅视觉收纳） ===== */

/* A. 主题页学段块：默认收起，点击标题展开（配 app.js 折叠交互） */
.grade-block{cursor:pointer;padding:14px 18px 16px;margin-bottom:10px}
.grade-block h3{display:flex;align-items:center;justify-content:space-between;margin-bottom:4px;padding-right:4px;font-size:15.5px}
.grade-block h3::after{content:"+";color:var(--green);font-weight:400;font-size:17px;line-height:1}
.grade-block.open h3::after{content:"−"}
.grade-block .age{margin-bottom:4px}
.grade-block .point{display:none}
.grade-block.open .point{display:block;margin-bottom:12px}
.grade-block.open .point:last-child{margin-bottom:2px}
.grade-block.open{cursor:default}

/* B. 导航下拉菜单：行距更松、分组更轻 */
.nav-dd .menu{gap:2px;padding:12px}
.nav-dd .menu a{padding:7px 12px}
.nav-dd .menu .group-label{padding:8px 12px 3px;opacity:.75}

/* C. 主题页头部关键点：去卡片框，改轻量列表，减少视觉块数量 */
.key-points{gap:2px;margin-bottom:10px}
.key-points .kp{background:transparent;border:none;padding:3px 0 3px 2px;font-size:13.5px;gap:8px}
.positioning{display:inline-block;font-size:12px;font-weight:600;margin:6px 0 10px;border:1px solid rgba(95,158,110,.35);border-radius:999px;padding:2px 10px}

/* D. 时效提示条：弱化为轻量虚线风 */
.policy-notice{background:#fffdf4;border:1px dashed rgba(201,164,92,.45);font-size:12.5px;padding:10px 14px}

/* E. 内容卡与模块的呼吸感 */
.point{padding:14px 16px}
.module{margin-bottom:14px}
.faq{margin-top:22px}


/* ===== 导航收进 ☰ 菜单 · 2026-09-30（桌面与移动统一） ===== */

/* ☰ 按钮全断点显示，横排导航全断点隐藏 */
.hamburger{display:block}
.nav-links{display:none}
.nav-links.mobile-open{display:flex;flex-direction:column;position:absolute;top:64px;left:0;right:0;background:var(--surface);border-bottom:1px solid var(--line);padding:14px 24px;gap:6px;box-shadow:var(--shadow-lg);z-index:70}

/* 面板内条目与下拉展开形态 */
.nav-links.mobile-open .nav-dd{display:block}
.nav-links.mobile-open .nav-dd .menu{position:static;box-shadow:none;border:none;background:transparent;padding:2px 0 8px 14px;min-width:0;border-radius:0}
.nav-links.mobile-open .nav-dd:hover .menu{display:none}
.nav-links.mobile-open .nav-dd.open .menu{display:flex}
.nav-links.mobile-open .nav-dd .nl{display:flex;align-items:center;justify-content:space-between;padding:8px 6px;border-radius:8px;font-size:14.5px;font-weight:600;color:var(--ink)}
.nav-links.mobile-open .nav-dd .nl:hover{background:var(--green-light)}
.nav-links.mobile-open > a.nl{padding:8px 6px;border-radius:8px;font-size:14.5px;font-weight:600;color:var(--ink)}
.nav-links.mobile-open > a.nl:hover{background:var(--green-light)}