/* ===== 文枢背单词 全局样式 ===== */
:root{
  --primary:#ff6b6b;
  --primary-dark:#e74c5a;
  --secondary:#feca57;
  --tertiary:#48dbfb;
  --violet:#a29bfe;
  --green:#1dd1a1;
  --ink:#2d3436;
  --muted:#636e72;
  --bg:#fff9f0;
  --card:#ffffff;
  --shadow:0 8px 30px rgba(0,0,0,.08);
  --radius:18px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%}
button{font-family:inherit;cursor:pointer;border:none}
input,select,textarea{font-family:inherit}

/* ===== 顶部导航 ===== */
.navbar{
  position:sticky;top:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 28px;height:66px;
  background:rgba(255,255,255,.92);backdrop-filter:blur(10px);
  box-shadow:0 2px 14px rgba(0,0,0,.06);
}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:22px}
.brand .logo{
  width:38px;height:38px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;font-size:20px;
}
.brand .sub{font-size:12px;font-weight:400;color:var(--muted);margin-top:-2px}
.nav-links{display:flex;align-items:center;gap:8px}
.nav-links a,.btn{
  padding:8px 18px;border-radius:30px;font-size:14px;font-weight:600;
  transition:.25s;
}
.nav-links a:hover{background:#fff0ec}
.nav-links .auth-btn{
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#fff;box-shadow:0 4px 14px rgba(255,107,107,.35);
}
.nav-links .auth-btn:hover{transform:translateY(-2px);box-shadow:0 6px 18px rgba(255,107,107,.45)}
.nav-links .ghost{color:var(--primary)}
.nav-links .ghost:hover{background:#fff0ec}
.nav-user{display:flex;align-items:center;gap:10px}
.nav-user .avatar{
  width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--violet),var(--tertiary));color:#fff;font-weight:700;font-size:15px;
}
.nav-user .uname{font-weight:600;font-size:14px}
.role-tag{
  font-size:11px;padding:2px 8px;border-radius:10px;font-weight:700;
  background:#e8f7ff;color:#0a8fd4;
}
.role-tag.admin{background:#fff0db;color:#d97a00}

/* ===== Hero ===== */
.hero{
  position:relative;overflow:hidden;text-align:center;padding:70px 20px 60px;
  background:linear-gradient(135deg,#ffe3e8 0%,#fff4d6 40%,#d6f4ff 100%);
}
.hero .blob{position:absolute;border-radius:50%;filter:blur(40px);opacity:.55;z-index:0}
.hero .blob.b1{width:300px;height:300px;background:#ffd3d3;top:-80px;left:-60px}
.hero .blob.b2{width:260px;height:260px;background:#ffe9a8;bottom:-60px;right:-40px}
.hero .blob.b3{width:200px;height:200px;background:#bfe9ff;top:30%;left:60%}
.brand-slogan{display:inline-block;background:linear-gradient(135deg,#7a5cff,#a29bfe);border:none;color:#fff;font-weight:900;font-size:1.28rem;padding:10px 26px;border-radius:999px;margin-bottom:18px;letter-spacing:1.2px;box-shadow:0 8px 24px #7a5cff44;animation:sloganPop .6s ease}
@keyframes sloganPop{from{transform:translateY(-8px);opacity:0}to{transform:none;opacity:1}}
.hero h1{position:relative;z-index:1;font-size:52px;font-weight:900;letter-spacing:1.5px;line-height:1.2;text-shadow:0 3px 0 rgba(255,255,255,.6)}
.hero h1 .grad{
  background:linear-gradient(90deg,var(--primary),#ff9f43,var(--tertiary),var(--violet));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero .hero-sub{position:relative;z-index:1;margin:20px auto;max-width:700px;font-size:20px;line-height:1.9;color:var(--muted)}
.hero .hero-sub b{color:var(--primary);font-weight:800}
.hero .hero-sub .hl1{color:#e74c3c;background:linear-gradient(transparent 62%,#ffd54f 62%);padding:0 2px}
.hero .hero-sub .hl2{color:#8e44ad;background:linear-gradient(transparent 62%,#d7b5ff 62%);padding:0 2px}
.hero .hero-sub .hl3{color:#0e9f6e;background:linear-gradient(transparent 62%,#b9f5d6 62%);padding:0 2px}
.hero .hero-sub .hl4{color:#d35400;background:linear-gradient(transparent 62%,#ffcd94 62%);padding:0 2px}
.hero .cta{position:relative;z-index:1;margin-top:26px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn-big{padding:14px 34px;font-size:17px;border-radius:40px;font-weight:700;color:#fff;box-shadow:0 6px 20px rgba(255,107,107,.4)}
.btn-primary{background:linear-gradient(135deg,var(--primary),#ff9f43)}
.btn-secondary{background:linear-gradient(135deg,var(--tertiary),#54a0ff)}
.btn-big:hover{transform:translateY(-3px)}
.hero .floating{position:relative;z-index:1;margin-top:34px;display:flex;justify-content:center;gap:20px;flex-wrap:wrap}
.float-card{
  background:rgba(255,255,255,.85);backdrop-filter:blur(6px);border-radius:16px;padding:14px 20px;
  box-shadow:var(--shadow);font-weight:700;display:flex;align-items:center;gap:8px;animation:bob 3s ease-in-out infinite;
}
.float-card:nth-child(2){animation-delay:.5s}
.float-card:nth-child(3){animation-delay:1s}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}

/* ===== 通用区块 ===== */
.section{padding:56px 26px;max-width:1180px;margin:0 auto}
.section-title{text-align:center;font-size:30px;font-weight:900;margin-bottom:8px}
.section-sub{text-align:center;color:var(--muted);margin-bottom:34px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:22px}
.card{
  background:var(--card);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);
  transition:.3s;border:1px solid #f3ecdd;
}
.card:hover{transform:translateY(-6px);box-shadow:0 14px 36px rgba(0,0,0,.12)}
.card .ic{font-size:36px;margin-bottom:12px}
.card h3{font-size:19px;margin-bottom:8px}
.card p{color:var(--muted);font-size:14px}

/* ===== 成功案例 ===== */
.cases{background:#fff5ec}
.case{
  display:flex;gap:16px;align-items:flex-start;background:#fff;border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow);border-left:5px solid var(--secondary);
}
.case .rank{font-size:40px;font-weight:900}
.case .meta{font-size:13px;color:var(--muted);margin:4px 0}
.case .score{color:var(--primary);font-weight:800}

/* ===== 页脚 ===== */
.footer{
  background:#2d3436;color:#dfe6e9;padding:34px 26px;text-align:center;font-size:14px;
}
.footer .links{margin-bottom:12px}
.footer .links a{margin:0 14px;color:#a4b0be}
.footer .links a:hover{color:#fff}

/* ===== 表单卡片 ===== */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:30px;background:linear-gradient(135deg,#ffe3e8,#fff4d6,#d6f4ff)}
.auth-card{background:#fff;border-radius:22px;box-shadow:var(--shadow);padding:38px 42px;width:100%;max-width:420px}
.auth-card h2{text-align:center;margin-bottom:6px;font-size:26px}
.auth-card .hint{text-align:center;color:var(--muted);margin-bottom:22px;font-size:14px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:#4a4a4a}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:12px;border:1.5px solid #e8ded0;font-size:15px;outline:none;transition:.2s;
  background:#fffdfa;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(255,107,107,.15)}
.field .row{display:flex;gap:10px}
.btn-submit{width:100%;padding:13px;border-radius:40px;font-size:16px;font-weight:700;color:#fff;background:linear-gradient(135deg,var(--primary),#ff9f43);box-shadow:0 6px 18px rgba(255,107,107,.35);margin-top:6px}
.btn-submit:hover{transform:translateY(-2px)}
.auth-foot{text-align:center;margin-top:16px;font-size:14px;color:var(--muted)}
.auth-foot a{color:var(--primary);font-weight:600}
.msg{font-size:13px;margin-top:10px;text-align:center}
.msg.err{color:#e74c5a}
.msg.ok{color:#1dd1a1}

/* ===== 工作台 ===== */
.dash{max-width:1180px;margin:0 auto;padding:34px 22px}
.dash-top{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-bottom:26px}
.dash-top h1{font-size:28px}
.welcome-banner{
  background:linear-gradient(135deg,#ff9a9e,#fad0c4 50%,#a1c4fd);border-radius:var(--radius);
  padding:26px;color:#fff;margin-bottom:28px;box-shadow:var(--shadow);
}
.welcome-banner h2{font-size:24px;margin-bottom:6px}
.welcome-banner p{opacity:.95;font-size:15px}

.dash-grid{display:grid;grid-template-columns:1fr 1.4fr;gap:26px}
@media(max-width:900px){.dash-grid{grid-template-columns:1fr}}
.panel{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:24px;border:1px solid #f3ecdd}
.panel h3{font-size:19px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.profile-list{display:flex;flex-direction:column;gap:12px}
.profile-item{display:flex;justify-content:space-between;align-items:center;padding:10px 12px;border-radius:12px;background:#fdf8f1}
.profile-item .k{font-size:13px;color:var(--muted)}
.profile-item .v{font-weight:700}

/* ===== 智能体聊天 ===== */
.agent-box{display:flex;flex-direction:column;height:600px;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:#fff;border:1px solid #f3ecdd}
.agent-head{display:flex;align-items:center;gap:12px;padding:16px 20px;background:linear-gradient(135deg,var(--primary),#ff9f43);color:#fff}
.agent-head .bot{width:40px;height:40px;border-radius:50%;background:#fff;display:flex;align-items:center;justify-content:center;font-size:20px}
.agent-head .tt{font-weight:800;font-size:17px}
.agent-head .st{font-size:12px;opacity:.9}
.agent-msgs{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:14px;background:#fffdfa}
.msg{max-width:82%;padding:12px 16px;border-radius:16px;font-size:14px;line-height:1.7;white-space:pre-wrap}
.msg.bot{align-self:flex-start;background:#fff;border:1px solid #f0e7db;border-top-left-radius:4px;box-shadow:0 2px 8px rgba(0,0,0,.05)}
.msg.user{align-self:flex-end;background:linear-gradient(135deg,var(--primary),#ff9f43);color:#fff;border-top-right-radius:4px}
.agent-input{display:flex;gap:10px;padding:14px;border-top:1px solid #f0e7db;background:#fff}
.agent-input input{flex:1;padding:12px 14px;border-radius:30px;border:1.5px solid #e8ded0;outline:none}
.agent-input input:focus{border-color:var(--primary)}
.agent-input button{padding:12px 22px;border-radius:30px;background:var(--primary);color:#fff;font-weight:700}

/* ===== 杂志展示 ===== */
.magazine{margin-top:26px}
.version-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}
.vt{padding:9px 18px;border-radius:30px;font-weight:700;font-size:14px;background:#fdf1e7;color:#a55}
.vt.active{background:linear-gradient(135deg,var(--primary),#ff9f43);color:#fff}
.version-panel{
  background:linear-gradient(180deg,#fff8f3,#fff);border:2px solid #ffe6cf;border-radius:18px;padding:30px;
  font-size:16.5px;line-height:2.05;color:#3c3c3c;min-height:300px;
}
.version-panel .mag-title{font-size:26px;text-align:center;font-weight:900;margin-bottom:4px}
.src-badge{display:inline-block;padding:3px 12px;border-radius:20px;font-size:13px;font-weight:700;margin:0 6px;vertical-align:middle}
.src-badge.reuse{background:#e8f5e9;color:#2e7d32;border:1px solid #a5d6a7}
.src-badge.new{background:#fff3e0;color:#e65100;border:1px solid #ffcc80}
.cfg-item{max-width:660px}
.cfg-row{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.cfg-row label{width:120px;font-weight:600;color:var(--muted);flex-shrink:0}
.cfg-row select,.cfg-row input{flex:1;padding:9px 12px;border:1px solid #e2e6ef;border-radius:10px;font-size:14px;background:#fff;color:var(--text)}
.cfg-actions{margin-top:8px}
.cfg-msg{margin-top:10px;font-size:13px}
.hidden{display:none!important}
.version-panel .mag-topic{text-align:center;color:var(--muted);margin-bottom:20px;font-size:14px}
.version-panel .blank-mark{color:var(--primary);font-weight:900;border-bottom:2px dashed var(--primary)}
.cover{max-height:360px;border-radius:14px;display:block;margin:0 auto 22px;box-shadow:var(--shadow)}
.answers{margin-top:22px;background:#f2fbf6;border:1.5px dashed var(--green);border-radius:14px;padding:16px 18px;font-size:14px}
.answers b{color:var(--green)}

/* ===== 杂志体验升级：点读 / 一键下载 / 多图 ===== */
.version-panel{position:relative}
.dl-btn{display:block;margin:6px auto 22px;font-size:15px;padding:11px 24px;background:linear-gradient(135deg,#ff9f43,#ff6a00);color:#fff;border:none;border-radius:30px;font-weight:800;cursor:pointer;box-shadow:0 6px 16px rgba(255,106,0,.3)}
.dl-btn:hover{transform:translateY(-2px)}
.word-bar{background:linear-gradient(135deg,#f3efff,#fff);border:2px solid #dcd0ff;border-radius:16px;padding:16px 20px;margin-top:22px}
.word-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:10px}
.word-chip{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;background:#fff;border:2px solid #c9b8ff;border-radius:26px;font-size:15px;font-weight:800;color:#5b3ed0;cursor:pointer;transition:all .15s;box-shadow:0 2px 6px rgba(123,97,255,.15)}
.word-chip:hover{background:#7a5cff;color:#fff;border-color:#7a5cff;transform:translateY(-1px)}
.word-chip.playing{background:#ff9f43;color:#fff;border-color:#ff9f43}

/* ===== 管理后台 ===== */
.admin-wrap{max-width:1180px;margin:0 auto;padding:34px 22px}
.admin-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-bottom:30px}
.stat{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;text-align:center}
.stat .num{font-size:36px;font-weight:900;color:var(--primary)}
.stat .lab{color:var(--muted);font-size:14px}
.table-wrap{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
table{width:100%;border-collapse:collapse}
th{background:#fff5ec;text-align:left;padding:14px 16px;font-size:13px;color:#8a7a68}
td{padding:14px 16px;font-size:14px;border-top:1px solid #f5efe6}
tr:hover td{background:#fffdfa}
.del-btn{padding:6px 14px;border-radius:20px;background:#ffecec;color:#e74c5a;font-size:13px;font-weight:600}
.del-btn:hover{background:#ffd6d6}
.empty{text-align:center;color:var(--muted);padding:30px}

.spin{display:inline-block;width:16px;height:16px;border:2.5px solid #fff;border-top-color:transparent;border-radius:50%;animation:rot .7s linear infinite;vertical-align:middle}
@keyframes rot{to{transform:rotate(360deg)}}
.hidden{display:none!important}
.nowrap{white-space:nowrap}

/* ===== 导航：进入智能体按钮 ===== */
.nav-links .gem{
  background:linear-gradient(135deg,#a29bfe,#6c5ce7);color:#fff;font-weight:700;
  box-shadow:0 4px 14px rgba(108,92,231,.4);
}
.nav-links .gem:hover{transform:translateY(-2px);box-shadow:0 6px 18px rgba(108,92,231,.5);background:linear-gradient(135deg,#a29bfe,#6c5ce7)}

/* ===== Hero 数据条 ===== */
.stat-strip{position:relative;z-index:1;display:flex;justify-content:center;gap:40px;flex-wrap:wrap;margin-top:34px}
.stat-strip>div{display:flex;flex-direction:column;align-items:center}
.stat-strip b{font-size:30px;font-weight:900;background:linear-gradient(90deg,var(--primary),#ff9f43,var(--tertiary),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-strip span{font-size:13px;color:var(--muted)}

/* ===== 精品推荐大卡片 ===== */
.big-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}
.big-card{
  position:relative;overflow:hidden;background:#fff;border-radius:22px;padding:30px;box-shadow:var(--shadow);
  border:1px solid #f3ecdd;display:flex;flex-direction:column;gap:12px;transition:.3s;
}
.big-card::before{content:'';position:absolute;top:-60px;right:-60px;width:200px;height:200px;border-radius:50%;background:linear-gradient(135deg,var(--c1),var(--c2));opacity:.14}
.big-card:hover{transform:translateY(-6px);box-shadow:0 16px 40px rgba(0,0,0,.14)}
.big-card .bc-ic{font-size:48px;background:linear-gradient(135deg,var(--c1),var(--c2));color:#fff;width:76px;height:76px;border-radius:20px;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 20px rgba(0,0,0,.18)}
.big-card h3{font-size:23px}
.big-card p{color:var(--muted);font-size:15px;flex:1}
.big-card .bc-btn{font-weight:800;color:var(--c2)}

/* ===== 最新更新列表 ===== */
.updates{background:#f6fbff}
.update-list{display:flex;flex-direction:column;gap:18px}
.upd{display:flex;gap:18px;align-items:center;background:#fff;border-radius:16px;padding:16px 18px;box-shadow:0 3px 12px rgba(0,0,0,.05);border:1px solid #eef2f7;transition:.25s}
.upd:hover{transform:translateY(-3px);box-shadow:0 8px 22px rgba(0,0,0,.1)}
.upd .thumb{width:86px;height:86px;border-radius:16px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:40px;color:#fff;background:linear-gradient(135deg,var(--c1),var(--c2));box-shadow:0 6px 16px rgba(0,0,0,.15)}
.upd h3{font-size:17px;margin-bottom:2px}
.upd .u-meta{font-size:12px;color:var(--muted);margin-bottom:4px}
.upd .u-meta b{color:var(--primary)}
.upd .u-desc{font-size:14px;color:#555}

/* ===== 热门栏目卡片 ===== */
.channels{background:#fff8f0}
.ch-card-wrap{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:22px}
.ch-card{background:#fff;border-radius:var(--radius);padding:26px;text-align:center;box-shadow:var(--shadow);border:1px solid #f3ecdd}
.ch-card .ch-ic{font-size:46px;margin-bottom:10px}
.ch-card h3{font-size:21px;margin-bottom:8px}
.ch-card p{color:var(--muted);font-size:14px;margin-bottom:12px}
.ch-card b{color:var(--primary);font-size:15px}

/* ===== 三步流程 ===== */
.steps-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:22px}
.step{background:#fff;border-radius:var(--radius);padding:26px;text-align:center;box-shadow:var(--shadow);border:1px solid #f3ecdd}
.step b{display:inline-flex;width:44px;height:44px;align-items:center;justify-content:center;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;font-size:20px;margin-bottom:12px}
.step h3{font-size:18px;margin-bottom:6px}
.step p{color:var(--muted);font-size:14px}