/* ==========================================================================
   NaichaCMS 前台设计系统
   一套令牌驱动全站：官网 / 演示站 / 会员中心共用，保证视觉完全统一。
   ========================================================================== */

:root{
  /* ==========================================================
     色板与 naicha.cloud 官网 css/style.css 保持一致（逐值对齐）
     改这里之前请先核对官网，避免两站观感再次跑偏
     ========================================================== */
  --n1:#0078d4;
  --n2:#0f9be0;

  --brand:#0078d4;
  --brand-2:#0f9be0;
  --brand-3:#0059a8;
  --grad:linear-gradient(135deg,#0078d4,#0f9be0);
  --grad-soft:linear-gradient(135deg,#eaf4fa,#f4faff);

  --ink:#1e293b;
  --ink-2:#475569;
  --muted:#64748b;
  --line:#e3ecf3;
  --line-2:#eef4fa;
  --bg:#f2f6fa;
  --card:#fff;

  --ok:#22b07d; --warn:#f0a020; --danger:#d5483c;

  /* 形状 */
  --r-xs:8px; --r-sm:11px; --r:16px; --r-lg:22px; --r-xl:30px; --r-full:999px;

  /* 阴影 */
  --sh-1:0 1px 2px rgba(13,27,42,.04), 0 2px 6px rgba(13,27,42,.05);
  --sh-2:0 6px 16px rgba(13,27,42,.06), 0 16px 40px rgba(13,27,42,.07);
  --sh-3:0 12px 30px rgba(13,27,42,.10), 0 30px 60px rgba(13,27,42,.08);
  --sh-brand:0 8px 24px rgba(0,120,212,.22);

  --wrap:1140px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  font-family:"Segoe UI","PingFang SC","Microsoft YaHei","幼圆",-apple-system,BlinkMacSystemFont,sans-serif;
  background:var(--bg);color:var(--ink);
  font-size:15px;line-height:1.75;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
}
a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--brand-2)}
img{max-width:100%;height:auto;display:block}

/* ------------------------------------------------------------------
   内联 SVG 尺寸兜底
   只写 viewBox、没有 width/height 的裸 <svg> 会按浏览器默认的
   替换元素尺寸（300×150）渲染，图标会变成巨大一块。
   这里给一个基础尺寸兜底；具体位置的规则（.btn svg / .empty svg /
   .feature .ic svg 等）选择器优先级更高，会正常覆盖它。
   ------------------------------------------------------------------ */
svg{width:16px;height:16px;flex:none;vertical-align:-0.18em}
h1,h2,h3,h4{line-height:1.35;font-weight:700;letter-spacing:-.015em;color:var(--ink)}
::selection{background:rgba(0,120,212,.16)}
::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:#c9d8e6;border-radius:6px;border:2px solid var(--bg)}
::-webkit-scrollbar-thumb:hover{background:#a9bfd4}

/* ============================ 顶部导航 ============================ */
.nav{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(18px) saturate(1.6);
  -webkit-backdrop-filter:blur(18px) saturate(1.6);
  border-bottom:1px solid rgba(228,236,245,.9);
  transition:box-shadow .25s var(--ease);
}
.nav.is-stuck{box-shadow:0 4px 20px rgba(13,27,42,.06)}
.nav-inner{max-width:var(--wrap);margin:0 auto;padding:0 24px;height:68px;display:flex;align-items:center;gap:28px}

.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:var(--ink);letter-spacing:-.02em;white-space:nowrap}
.brand:hover{color:var(--ink)}
.brand .logo-box{
  width:34px;height:34px;border-radius:10px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;color:#fff;
  box-shadow:var(--sh-brand);flex:none;
}
.brand .logo-box svg{width:19px;height:19px}

.nav nav{display:flex;gap:4px;flex:1}
.nav nav a{
  position:relative;padding:8px 14px;border-radius:var(--r-full);
  font-size:14.5px;font-weight:500;color:var(--ink-2);white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.nav nav a:hover{background:var(--grad-soft);color:var(--brand)}
.nav nav a.active{color:var(--brand);font-weight:600;background:var(--grad-soft)}

.nav-right{display:flex;align-items:center;gap:10px;white-space:nowrap}
.nav-right .user{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-2)}
.nav-right .av{
  width:32px;height:32px;border-radius:var(--r-full);background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;
  box-shadow:0 3px 10px rgba(0,120,212,.24);
}
.nav-right .av svg{width:17px;height:17px}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;color:var(--ink);padding:6px;border-radius:var(--r-xs)}
.nav-toggle:hover{background:var(--line-2)}
.nav-toggle svg{width:22px;height:22px}

/* ============================ 按钮 ============================ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 20px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:14px;font-weight:600;font-family:inherit;cursor:pointer;white-space:nowrap;
  background:var(--grad);color:#fff;box-shadow:var(--sh-brand);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
}
.btn:hover{transform:translateY(-1px);box-shadow:0 10px 30px rgba(0,120,212,.3);color:#fff}
.btn:active{transform:translateY(0)}
.btn svg{width:16px;height:16px}
.btn.ghost{background:#fff;color:var(--ink-2);border-color:var(--line);box-shadow:var(--sh-1)}
.btn.ghost:hover{border-color:var(--brand);color:var(--brand);box-shadow:0 6px 18px rgba(0,120,212,.12)}
.btn.soft{background:var(--grad-soft);color:var(--brand);box-shadow:none;border-color:transparent}
.btn.soft:hover{background:#e0f0ff;color:var(--brand-3)}
.btn.lg{height:50px;padding:0 28px;font-size:15.5px;border-radius:var(--r)}
.btn.sm{height:34px;padding:0 14px;font-size:13px;border-radius:var(--r-xs)}
.btn.block{width:100%}

/* ============================ 版心 ============================ */
.container{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.section{padding:72px 0}
.section.tight{padding:48px 0}

.sec-head{max-width:660px;margin-bottom:38px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  color:var(--brand);background:var(--grad-soft);
  padding:5px 12px;border-radius:var(--r-full);margin-bottom:14px;
}
.sec-head h2{font-size:31px;margin-bottom:12px}
.sec-head h2 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.sec-head p{font-size:15.5px;color:var(--muted);line-height:1.8}

/* ============================ 首屏 Hero ============================ */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:#03243f;
  border-radius:0 0 var(--r-xl) var(--r-xl);
  margin-bottom:0;
}
.hero-bg{position:absolute;inset:0;background:var(--grad);opacity:.96}
.hero-bg:before{
  content:'';position:absolute;inset:0;
  background:
    radial-gradient(720px 380px at 12% -10%,rgba(255,255,255,.22),transparent 62%),
    radial-gradient(640px 420px at 92% 6%,rgba(0,255,224,.16),transparent 60%),
    radial-gradient(520px 340px at 60% 118%,rgba(255,255,255,.12),transparent 62%);
}
.hero-bg:after{
  content:'';position:absolute;inset:0;opacity:.20;
  background-image:linear-gradient(rgba(255,255,255,.16) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:radial-gradient(700px 420px at 30% 30%,#000,transparent 78%);
  mask-image:radial-gradient(700px 420px at 30% 30%,#000,transparent 78%);
}
.hero-inner{position:relative;max-width:var(--wrap);margin:0 auto;padding:88px 24px 96px}
.hero-top{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.hero .pill{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.24);
  padding:6px 14px;border-radius:var(--r-full);margin-bottom:20px;backdrop-filter:blur(6px);
}
.hero .pill .dot{width:6px;height:6px;border-radius:50%;background:#7df5c4;box-shadow:0 0 0 3px rgba(125,245,196,.25)}
.hero h1{font-size:46px;line-height:1.18;letter-spacing:-.025em;color:#fff;margin-bottom:18px;font-weight:800}
.hero h1 em{font-style:normal;background:linear-gradient(135deg,#b6e8ff,#ffffff);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero p.lead{font-size:16.5px;line-height:1.85;color:rgba(255,255,255,.9);max-width:560px;margin-bottom:30px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.hero .btn{background:#fff;color:var(--brand-3);box-shadow:0 10px 30px rgba(0,0,0,.18)}
.hero .btn:hover{color:var(--brand-3);box-shadow:0 14px 36px rgba(0,0,0,.24)}
.hero .btn.ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.32);box-shadow:none}
.hero .btn.ghost:hover{background:rgba(255,255,255,.2);color:#fff}
.hero-meta{display:flex;gap:26px;margin-top:34px;flex-wrap:wrap}
.hero-meta div{font-size:13px;color:rgba(255,255,255,.78)}
.hero-meta b{display:block;font-size:20px;font-weight:800;color:#fff;letter-spacing:-.02em}

/* Hero 右侧代码卡 */
.code-card{
  background:rgba(4,20,34,.55);border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r);overflow:hidden;backdrop-filter:blur(14px);
  box-shadow:0 24px 60px rgba(0,0,0,.34);
}
.code-card .bar{display:flex;align-items:center;gap:7px;padding:12px 16px;border-bottom:1px solid rgba(255,255,255,.12)}
.code-card .bar i{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.26)}
.code-card .bar span{margin-left:8px;font-size:12px;color:rgba(255,255,255,.6);font-family:ui-monospace,Consolas,monospace}
.code-card pre{
  margin:0;padding:18px;font-family:ui-monospace,Consolas,monospace;font-size:12.5px;line-height:1.85;
  color:#a9f0c4;overflow-x:auto;white-space:pre;
}
.code-card pre .c{color:#7fb0d8}
.code-card pre .t{color:#ffd479}
.code-card pre .s{color:#a9f0c4}

/* 轮播 */
.hero-slides{position:relative;min-height:250px}
.hero-slide{display:none;animation:fadeUp .5s var(--ease)}
.hero-slide.on{display:block}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.hero-dots{display:flex;gap:8px;margin-top:30px}
.hero-dots button{
  width:26px;height:4px;border-radius:2px;border:none;cursor:pointer;
  background:rgba(255,255,255,.3);transition:.25s var(--ease);padding:0;
}
.hero-dots button.on{background:#fff;width:40px}

/* ============================ 卡片与网格 ============================ */
.grid{display:grid;gap:18px}
.grid.c2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.grid.c3{grid-template-columns:repeat(auto-fit,minmax(272px,1fr))}
.grid.c4{grid-template-columns:repeat(auto-fit,minmax(228px,1fr))}

.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:24px;box-shadow:var(--sh-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card.hover:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#cfe4f7}
.card h3{font-size:15px;margin-bottom:16px;display:flex;align-items:center;gap:9px;font-weight:600;color:var(--ink)}
.card h3 svg{width:17px;height:17px;color:var(--brand);flex:none}
.card h3 + p{margin-top:-6px}

.feature{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:var(--sh-1);transition:.22s var(--ease)}
.feature:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#cfe4f7}
.feature .ic{
  width:46px;height:46px;border-radius:13px;background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;box-shadow:var(--sh-brand);
}
.feature .ic svg{width:22px;height:22px}
.feature h3{font-size:16.5px;margin-bottom:9px}
.feature p{font-size:14px;color:var(--muted);line-height:1.8}
.feature ul{margin:12px 0 0 18px;font-size:13.5px;color:var(--muted);line-height:1.9}

/* 数据带 */
.stat-band{
  background:var(--grad);border-radius:var(--r-lg);padding:38px 34px;color:#fff;
  display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:26px;
  box-shadow:var(--sh-brand);position:relative;overflow:hidden;
}
.stat-band:before{content:'';position:absolute;right:-70px;top:-90px;width:280px;height:280px;border-radius:50%;background:rgba(255,255,255,.1)}
.stat-band .item{position:relative}
.stat-band b{display:block;font-size:34px;font-weight:800;letter-spacing:-.03em;line-height:1.2}
.stat-band span{font-size:13.5px;color:rgba(255,255,255,.86)}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px;counter-reset:s}
.step{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:28px 24px 24px;box-shadow:var(--sh-1)}
.step:before{
  counter-increment:s;content:counter(s,decimal-leading-zero);
  position:absolute;top:-14px;left:24px;height:28px;padding:0 14px;
  background:var(--grad);color:#fff;border-radius:var(--r-full);
  font-size:12px;font-weight:700;line-height:28px;letter-spacing:.06em;box-shadow:var(--sh-brand);
}
.step h3{font-size:16px;margin:10px 0 8px}
.step p{font-size:13.5px;color:var(--muted);line-height:1.8}

/* 列表条目 */
.entry{
  display:flex;align-items:center;gap:16px;padding:18px 22px;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r);margin-bottom:10px;box-shadow:var(--sh-1);
  transition:.2s var(--ease);
}
.entry:hover{border-color:#cfe4f7;box-shadow:var(--sh-2);transform:translateY(-1px)}
.entry .tag-badge{
  font-size:11.5px;font-weight:600;color:var(--brand);background:var(--grad-soft);
  padding:3px 11px;border-radius:var(--r-full);white-space:nowrap;
}
.entry h3{font-size:15.5px;flex:1;margin:0;font-weight:600}
.entry h3 a{color:var(--ink)}
.entry h3 a:hover{color:var(--brand)}
.entry time{font-size:12.5px;color:var(--muted);white-space:nowrap}

/* ============================ 列表页 ============================ */
.page-head{padding:44px 0 30px;border-bottom:1px solid var(--line);background:#fff}
.page-head h1{font-size:29px;margin-bottom:10px}
.page-head p{font-size:15px;color:var(--muted);max-width:760px;line-height:1.8}
.crumb{display:flex;gap:8px;align-items:center;flex-wrap:wrap;font-size:13px;color:var(--muted);margin-bottom:14px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#c3d3e2}

.news-grid{display:grid;gap:16px}
.news-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:24px 26px;
  box-shadow:var(--sh-1);transition:.22s var(--ease);
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#cfe4f7}
.news-card h3{font-size:17px;margin-bottom:10px}
.news-card h3 a{color:var(--ink)}
.news-card h3 a:hover{color:var(--brand)}
.news-card p{font-size:14px;color:var(--muted);line-height:1.85;margin-bottom:14px}
.news-meta{display:flex;gap:16px;font-size:12.5px;color:#9db0c6;align-items:center}
.news-meta .dot{width:3px;height:3px;border-radius:50%;background:#c3d3e2}

/* 标签芯片 */
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:500;
  padding:5px 13px;border-radius:var(--r-full);background:#fff;border:1px solid var(--line);color:var(--ink-2);
  transition:.18s var(--ease);
}
.chip:hover{border-color:var(--brand);color:var(--brand);background:var(--grad-soft)}
.chip.on{background:var(--grad);color:#fff;border-color:transparent;box-shadow:var(--sh-brand)}
.chip small{color:var(--muted);font-size:11px}
.chip.on small{color:rgba(255,255,255,.8)}

/* ============================ 详情页 ============================ */
.article{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:44px 48px;box-shadow:var(--sh-1)}
.article h1{font-size:31px;line-height:1.35;margin-bottom:18px;letter-spacing:-.02em}
.article .meta{display:flex;gap:20px;flex-wrap:wrap;font-size:13px;color:var(--muted);padding-bottom:22px;border-bottom:1px solid var(--line-2);margin-bottom:30px}
.article .meta .tag-badge{font-size:11.5px;font-weight:600;color:var(--brand);background:var(--grad-soft);padding:3px 11px;border-radius:var(--r-full)}
.article .body{font-size:15.5px;line-height:1.95;color:var(--ink-2)}
.article .body h2{font-size:21px;margin:34px 0 14px;padding-left:14px;border-left:4px solid var(--brand);color:var(--ink)}
.article .body h3{font-size:17.5px;margin:26px 0 10px;color:var(--ink)}
.article .body p{margin-bottom:16px}
.article .body ul,.article .body ol{margin:0 0 16px 22px}
.article .body li{margin-bottom:8px}
.article .body img{border-radius:var(--r-sm);margin:18px 0;box-shadow:var(--sh-2)}
.article .body blockquote{
  border-left:3px solid var(--brand);background:var(--grad-soft);
  padding:16px 20px;border-radius:0 var(--r-xs) var(--r-xs) 0;color:var(--ink-2);margin:18px 0;
}
.article .body pre{
  background:#0b1b2b;color:#a9f0c4;padding:20px 22px;border-radius:var(--r-sm);overflow-x:auto;
  font-family:ui-monospace,Consolas,monospace;font-size:13px;line-height:1.8;margin:18px 0;box-shadow:var(--sh-2);
}
.article .body code{font-family:ui-monospace,Consolas,monospace;font-size:13.5px;background:#eef4fa;padding:2px 7px;border-radius:6px;color:#0b6b5f}
.article .body pre code{background:none;padding:0;color:inherit;font-size:13px}
.article .body table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14px}
.article .body th{background:#f7fafd;text-align:left;padding:11px 14px;border:1px solid var(--line);font-weight:600}
.article .body td{padding:11px 14px;border:1px solid var(--line)}
.article-foot{margin-top:34px;padding-top:24px;border-top:1px solid var(--line-2);display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center}

/* ============================ 分页 ============================ */
.nc-pager{display:flex;align-items:center;gap:7px;flex-wrap:wrap;justify-content:center;margin-top:34px}
.nc-pager-item{
  display:inline-flex;align-items:center;justify-content:center;min-width:38px;height:38px;padding:0 13px;
  border-radius:var(--r-xs);background:#fff;border:1px solid var(--line);
  font-size:14px;font-weight:500;color:var(--ink-2);transition:.18s var(--ease);
}
.nc-pager-item:hover{border-color:var(--brand);color:var(--brand);box-shadow:0 4px 14px rgba(0,120,212,.12)}
.nc-pager-item.is-active{background:var(--grad);color:#fff;border-color:transparent;box-shadow:var(--sh-brand);font-weight:600}
.nc-pager-item.is-disabled{color:#c3d3e2;cursor:not-allowed}
.nc-pager-item.is-disabled:hover{border-color:var(--line);box-shadow:none}
.nc-pager-item.is-gap{border:none;background:none;color:#9db0c6}
.nc-pager-total{margin-left:12px;font-size:13px;color:var(--muted)}

/* ============================ 表单 ============================ */
.form-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:32px 34px;box-shadow:var(--sh-2)}
.field{margin-bottom:18px}
.field>label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:7px}
.field input,.field select,.field textarea{
  width:100%;height:44px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-xs);
  font-size:14px;font-family:inherit;color:var(--ink);background:#fff;outline:none;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field textarea{height:auto;min-height:130px;padding:12px 14px;line-height:1.8;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(0,120,212,.1)}
.field input::placeholder,.field textarea::placeholder{color:#aebccd}
.hint{font-size:12px;color:var(--muted);margin-top:7px}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

.alert{display:flex;align-items:center;gap:10px;padding:13px 16px;border-radius:var(--r-xs);font-size:13.5px;margin-bottom:20px;border:1px solid transparent}
.alert.ok{background:#e9f9f1;color:#0d7a4b;border-color:#c3eeda}
.alert.err{background:#fdeceb;color:#b3261e;border-color:#f8cfcc}

.auth-box{max-width:430px;margin:56px auto}

/* ============================ 会员中心 ============================ */
.wrap{display:grid;grid-template-columns:250px 1fr;gap:24px;max-width:var(--wrap);margin:0 auto;padding:32px 24px 72px;align-items:start}
.side{position:sticky;top:92px;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px 14px;box-shadow:var(--sh-2)}
.side .ucard{text-align:center;padding:6px 0 20px;border-bottom:1px solid var(--line-2);margin-bottom:12px}
.side .ucard .avatar{
  width:60px;height:60px;border-radius:var(--r-full);background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:23px;font-weight:700;margin:0 auto 12px;
  box-shadow:var(--sh-brand);
}
.side .ucard .avatar svg{width:30px;height:30px}
.side .ucard b{display:block;font-size:15.5px;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.side .ucard span{font-size:12.5px;color:var(--muted)}
.side .g{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#9db0c6;padding:12px 12px 6px}
.side a{display:flex;align-items:center;gap:11px;padding:10px 13px;border-radius:var(--r-xs);font-size:14px;color:var(--ink-2);margin-bottom:2px;transition:.18s var(--ease)}
.side a:hover{background:var(--grad-soft);color:var(--brand)}
.side a.on{background:var(--grad-soft);color:var(--brand);font-weight:600}
.side a svg{width:17px;height:17px;flex:none}
.main{min-width:0}

/* 信息块网格（用户中心 / 后台共用） */
.info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px}
.info-item{background:var(--grad-soft);border:1px solid #dbeaf8;border-radius:var(--r-xs);padding:14px 16px}
.info-item span{display:block;font-size:12.5px;color:var(--muted);margin-bottom:6px}
.info-item b{font-size:15px;font-weight:600;color:var(--ink);word-break:break-all}
.info-item b.mono{font-family:ui-monospace,Consolas,monospace;font-size:13px}

/* ============================ 会员中心：资料横幅 ============================ */
.member-hero{
  position:relative;overflow:hidden;background:var(--grad);border-radius:var(--r);
  padding:28px 30px;color:#fff;display:flex;align-items:center;gap:20px;flex-wrap:wrap;
  box-shadow:var(--sh-brand);margin-bottom:18px;
}
.member-hero:before{content:'';position:absolute;right:-60px;top:-80px;width:220px;height:220px;border-radius:50%;background:rgba(255,255,255,.10)}
.member-hero:after{content:'';position:absolute;right:80px;bottom:-100px;width:160px;height:160px;border-radius:50%;background:rgba(255,255,255,.07)}
.member-hero .m-avatar{
  position:relative;width:68px;height:68px;border-radius:50%;flex:none;
  background:rgba(255,255,255,.2);border:2px solid rgba(255,255,255,.38);
  display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:700;color:#fff;
}
.member-hero .m-avatar svg{width:32px;height:32px}
.member-hero .m-body{position:relative;flex:1;min-width:0}
.member-hero h2{font-size:21px;color:#fff;margin:0 0 6px;letter-spacing:-.02em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.member-hero .m-meta{font-size:13px;color:rgba(255,255,255,.88);display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.member-hero .m-badge{display:inline-block;font-size:11.5px;font-weight:600;background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.24);padding:3px 11px;border-radius:var(--r-full)}
.member-hero .m-act{position:relative;display:flex;gap:10px;flex-wrap:wrap}
.member-hero .btn{background:#fff;color:var(--brand-3);box-shadow:0 6px 18px rgba(0,0,0,.14)}
.member-hero .btn:hover{color:var(--brand-3)}
.member-hero .btn.ghost{background:rgba(255,255,255,.16);color:#fff;border-color:rgba(255,255,255,.3);box-shadow:none}
.member-hero .btn.ghost:hover{background:rgba(255,255,255,.24);color:#fff}

/* 会员中心：概览小卡 */
.m-stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin-bottom:18px}
.m-stat{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:16px 18px;box-shadow:var(--sh-1)}
.m-stat .ms-ico{width:34px;height:34px;border-radius:10px;background:var(--grad-soft);display:flex;align-items:center;justify-content:center;margin-bottom:10px}
.m-stat .ms-ico svg{width:17px;height:17px;color:var(--brand)}
.m-stat b{display:block;font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.01em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.m-stat span{font-size:12.5px;color:var(--muted)}

/* ============================ 通用小件 ============================ */
.pill{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.24);
  padding:6px 14px;border-radius:var(--r-full);backdrop-filter:blur(6px);color:#fff;
}
.pill .dot{width:6px;height:6px;border-radius:50%;background:#7df5c4;box-shadow:0 0 0 3px rgba(125,245,196,.25)}
.btn-row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}

/* ============================ 首屏 v2（左文右图） ============================ */
.hero2{
  position:relative;overflow:hidden;color:#fff;background:#03243f;
  border-radius:0 0 var(--r-xl) var(--r-xl);
}
.hero2-bg{position:absolute;inset:0;background:var(--grad)}
.hero2-bg:before{
  content:'';position:absolute;inset:0;
  background:
    radial-gradient(760px 400px at 10% -12%,rgba(255,255,255,.22),transparent 62%),
    radial-gradient(680px 440px at 94% 4%,rgba(0,255,224,.15),transparent 60%),
    radial-gradient(560px 360px at 56% 120%,rgba(255,255,255,.12),transparent 64%);
}
.hero2-bg:after{
  content:'';position:absolute;inset:0;opacity:.18;
  background-image:linear-gradient(rgba(255,255,255,.16) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:54px 54px;
  -webkit-mask-image:radial-gradient(760px 460px at 26% 26%,#000,transparent 80%);
  mask-image:radial-gradient(760px 460px at 26% 26%,#000,transparent 80%);
}
.hero2-inner{position:relative;max-width:var(--wrap);margin:0 auto;padding:80px 24px 88px}
.hero2-top{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center}
.hero2 h1{font-size:clamp(30px,4vw,50px);line-height:1.16;letter-spacing:-.03em;color:#fff;margin:18px 0 22px;font-weight:800}
.hero2 h1 em{font-style:normal;background:linear-gradient(135deg,#c9ecff,#ffffff);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero2 .lead{font-size:16.5px;line-height:1.9;color:rgba(255,255,255,.9);margin-bottom:30px;max-width:520px}
.hero2-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.hero2 .btn{background:#fff;color:var(--brand-3);box-shadow:0 10px 30px rgba(0,0,0,.18);height:48px;padding:0 26px;font-size:15px}
.hero2 .btn:hover{color:var(--brand-3)}
.hero2 .btn.ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.3);box-shadow:none}
.hero2 .btn.ghost:hover{background:rgba(255,255,255,.2);color:#fff}
.hero2-trust{display:flex;gap:22px;flex-wrap:wrap;margin-top:30px;font-size:13px;color:rgba(255,255,255,.78)}
.hero2-trust span{display:inline-flex;align-items:center;gap:7px}
.hero2-trust svg{width:15px;height:15px;color:#7df5c4}

/* ============================ 后台界面示意图（纯 CSS 绘制） ============================ */
.mock{
  background:#fff;border-radius:14px;overflow:hidden;
  box-shadow:0 30px 70px rgba(0,0,0,.38);border:1px solid rgba(255,255,255,.2);
}
.mock-bar{display:flex;align-items:center;gap:7px;padding:11px 14px;background:#f6f9fc;border-bottom:1px solid #e4ecf5}
.mock-bar i{width:10px;height:10px;border-radius:50%;background:#ff5f57}
.mock-bar i:nth-child(2){background:#febc2e}
.mock-bar i:nth-child(3){background:#28c840}
.mock-bar u{flex:1;text-decoration:none;height:20px;border-radius:10px;background:#eaf1f8;margin-left:10px;display:block}
.mock-body{display:grid;grid-template-columns:112px 1fr;min-height:250px}
.mock-side{background:linear-gradient(180deg,#f7fbff,#fff);border-right:1px solid #eef4fa;padding:12px 9px}
.mock-side b{display:block;height:9px;border-radius:5px;background:#e6eef7;margin:0 0 9px}
.mock-side b.on{background:var(--brand);opacity:.9}
.mock-side b:nth-child(3n){width:78%}
.mock-main{padding:14px 16px}
.mock-kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:12px}
.mock-kpi{height:46px;border-radius:9px;background:var(--grad);opacity:.92}
.mock-kpi:nth-child(2){background:linear-gradient(135deg,#0f9be0,#0078d4);opacity:.75}
.mock-kpi:nth-child(3){background:linear-gradient(135deg,#5ec2f5,#0f9be0);opacity:.55}
.mock-row{height:11px;border-radius:6px;background:#eef4fa;margin-bottom:9px}
.mock-row:nth-child(2n){width:88%}
.mock-row:nth-child(3n){width:70%}
.mock-chart{display:flex;align-items:flex-end;gap:5px;height:56px;margin-top:12px}
.mock-chart i{flex:1;border-radius:4px 4px 2px 2px;background:linear-gradient(180deg,#8fd3f7,#0078d4)}

/* ============================ 信任带 ============================ */
.trust{padding:34px 0;border-bottom:1px solid var(--line);background:#fff}
.trust-inner{max-width:var(--wrap);margin:0 auto;padding:0 24px;text-align:center}
.trust p{font-size:13px;color:var(--muted);letter-spacing:.06em;text-transform:uppercase;font-weight:600;margin-bottom:18px}
.trust-badges{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.trust-badges span{
  display:inline-flex;align-items:center;gap:8px;font-size:13.5px;font-weight:600;color:var(--ink-2);
  background:var(--bg);border:1px solid var(--line);padding:9px 16px;border-radius:var(--r-full);
}
.trust-badges svg{width:16px;height:16px;color:var(--brand)}

/* ============================ 左右分栏（图文交替） ============================ */
.split2{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.split2+.split2{margin-top:64px}
.split2.rev .split-text{order:2}
.split-text h2{font-size:28px;margin-bottom:16px;letter-spacing:-.02em}
.split-text h2 em{font-style:normal;color:var(--brand)}
.split-text p{font-size:15px;color:var(--muted);line-height:1.95;margin-bottom:14px}
.split-text ul{margin:18px 0 0 0;list-style:none}
.split-text li{display:flex;gap:11px;align-items:flex-start;margin-bottom:12px;font-size:14.5px;color:var(--ink-2);line-height:1.75}
.split-text li svg{width:18px;height:18px;color:var(--ok);flex:none;margin-top:3px}
.split-media .code-card{box-shadow:var(--sh-3)}

/* ============================ 代码展示 ============================ */
.code-panel{
  background:#0b1b2b;border-radius:var(--r);overflow:hidden;box-shadow:var(--sh-3);
}
.code-panel .cp-bar{
  display:flex;align-items:center;gap:8px;padding:12px 16px;
  border-bottom:1px solid rgba(255,255,255,.08);font-size:12px;color:#7fb0d8;
  font-family:ui-monospace,Consolas,monospace;
}
.code-panel .cp-bar i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.2)}
.code-panel pre{
  margin:0;padding:18px 20px;font-family:ui-monospace,Consolas,monospace;
  font-size:12.5px;line-height:1.9;color:#a9f0c4;overflow-x:auto;white-space:pre;
}
.code-panel pre .c{color:#6f9dc0}
.code-panel pre .t{color:#ffd479}
.code-panel pre .s{color:#a9f0c4}
.code-panel pre .k{color:#ff9db1}

/* ============================ 对比表 ============================ */
.cmp-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:#fff;box-shadow:var(--sh-1)}
.cmp{width:100%;border-collapse:collapse;font-size:14px;min-width:640px}
.cmp th,.cmp td{padding:13px 18px;text-align:left;border-bottom:1px solid var(--line-2)}
.cmp thead th{
  background:#f7fafd;font-size:12.5px;font-weight:700;color:var(--muted);
  letter-spacing:.05em;text-transform:uppercase;
}
.cmp thead th:nth-child(2){color:var(--brand)}
.cmp tbody tr:last-child td{border-bottom:none}
.cmp tbody tr:hover{background:#fafcff}
.cmp .yes{color:var(--ok);font-weight:600}
.cmp .no{color:#b9c6d4}
.cmp .part{color:var(--warn);font-weight:600}
.cmp td:first-child{font-weight:500;color:var(--ink)}

/* ============================ 适用人群 ============================ */
.persona{
  border:1px solid var(--line);border-radius:var(--r);padding:26px;background:#fff;
  box-shadow:var(--sh-1);transition:.22s var(--ease);position:relative;overflow:hidden;
}
.persona:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#cfe4f7}
.persona:before{content:'';position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad)}
.persona h3{font-size:17px;margin-bottom:10px}
.persona p{font-size:14px;color:var(--muted);line-height:1.85;margin-bottom:14px}
.persona ul{list-style:none;font-size:13.5px;color:var(--ink-2)}
.persona li{padding-left:18px;position:relative;margin-bottom:7px;line-height:1.7}
.persona li:before{content:'';position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--brand);opacity:.5}

/* ============================ FAQ 手风琴 ============================ */
.faq-acc{display:grid;gap:10px}
.faq-acc details{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  overflow:hidden;transition:.18s var(--ease);
}
.faq-acc details[open]{border-color:#cfe4f7;box-shadow:var(--sh-1)}
.faq-acc summary{
  cursor:pointer;padding:16px 20px;font-size:15px;font-weight:600;color:var(--ink);
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.faq-acc summary::-webkit-details-marker{display:none}
.faq-acc summary:after{
  content:'+';font-size:20px;color:var(--brand);font-weight:400;flex:none;
  transition:transform .2s var(--ease);line-height:1;
}
.faq-acc details[open] summary:after{transform:rotate(45deg)}
.faq-acc .faq-body{padding:0 20px 18px;font-size:14px;color:var(--muted);line-height:1.95}

/* ============================ CTA 带 ============================ */
.cta-band{
  position:relative;overflow:hidden;background:var(--grad);border-radius:var(--r-lg);
  padding:52px 40px;color:#fff;text-align:center;box-shadow:var(--sh-brand);
}
.cta-band:before{content:'';position:absolute;right:-70px;top:-90px;width:280px;height:280px;border-radius:50%;background:rgba(255,255,255,.1)}
.cta-band:after{content:'';position:absolute;left:60px;bottom:-110px;width:200px;height:200px;border-radius:50%;background:rgba(255,255,255,.07)}
.cta-band h2{font-size:30px;color:#fff;margin-bottom:14px;letter-spacing:-.02em;position:relative}
.cta-band p{font-size:15.5px;color:rgba(255,255,255,.9);max-width:620px;margin:0 auto 28px;line-height:1.9;position:relative}
.cta-band .btn{background:#fff;color:var(--brand-3);height:50px;padding:0 30px;font-size:15.5px}
.cta-band .btn:hover{color:var(--brand-3)}
.cta-band .btn.ghost{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.3);box-shadow:none}
.cta-band .btn.ghost:hover{background:rgba(255,255,255,.22);color:#fff}

/* ============================ 页脚 ============================ */
.footer{background:#0a1a2b;color:#8fa6bd;padding:56px 0 26px;margin-top:0}
.footer-top{max-width:var(--wrap);margin:0 auto;padding:0 24px;display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer .fbrand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:#fff;margin-bottom:14px}
.footer .fbrand .logo-box{width:32px;height:32px;border-radius:9px;background:var(--grad);display:flex;align-items:center;justify-content:center}
.footer .fbrand .logo-box svg{width:18px;height:18px}
.footer p.about{font-size:13.5px;line-height:1.85;color:#8fa6bd;max-width:320px}
.footer h4{color:#fff;font-size:13.5px;margin-bottom:14px;font-weight:600}
.footer ul{list-style:none}
.footer li{margin-bottom:9px}
.footer ul a{color:#8fa6bd;font-size:13.5px}
.footer ul a:hover{color:#fff}
.footer-bottom{
  max-width:var(--wrap);margin:40px auto 0;padding:22px 24px 0;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12.5px;color:#6d8399;
}
.footer .chips a.chip{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.12);color:#a9bdd1}
.footer .chips a.chip:hover{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.2)}

/* ============================ 空态 ============================ */
.empty{background:var(--card);border:1px dashed var(--line);border-radius:var(--r);padding:72px 24px;text-align:center;color:var(--muted)}
.empty svg{width:48px;height:48px;color:#c9d8e6;margin:0 auto 14px}
.empty h3{font-size:17px;color:var(--ink-2);margin-bottom:8px}
.empty p{font-size:14px}

/* ============================ 响应式 ============================ */
@media(max-width:1000px){
  .hero-top{grid-template-columns:1fr;gap:38px}
  .hero h1{font-size:36px}
  .hero-inner{padding:64px 24px 72px}
  .footer-top{grid-template-columns:1fr 1fr;gap:28px}
}
@media(max-width:820px){
  .nav-inner{gap:14px;height:62px;padding:0 18px}
  .nav-toggle{display:flex;order:3}
  .nav nav{
    position:absolute;top:62px;left:0;right:0;background:#fff;flex-direction:column;gap:2px;
    padding:12px 18px 18px;border-bottom:1px solid var(--line);display:none;
    box-shadow:0 16px 40px rgba(13,27,42,.1);
  }
  .nav nav.open{display:flex}
  .nav nav a{padding:11px 14px;border-radius:var(--r-xs)}
  .wrap{grid-template-columns:1fr;gap:16px;padding:20px 18px 56px}
  .side{position:static;top:auto}
  .container{padding:0 18px}
  .section{padding:48px 0}
  .sec-head h2{font-size:25px}
  .hero h1{font-size:29px}
  .hero p.lead{font-size:15px}
  .article{padding:26px 20px}
  .article h1{font-size:23px}
  .form-card{padding:24px 20px}
  .entry{flex-wrap:wrap;gap:10px}
  .entry h3{flex-basis:100%;order:2}
  .stat-band{padding:28px 24px}
  .stat-band b{font-size:26px}
  .footer-top{grid-template-columns:1fr;gap:26px}
  .grid{counter-reset:none}
}

/* ============================================================
   在线文档 /docs
   左侧固定分组目录 + 右侧正文。窄屏时目录收到正文上方。
   ============================================================ */
.docs-wrap{display:grid;grid-template-columns:270px minmax(0,1fr);gap:40px;
  max-width:1220px;margin:0 auto;padding:34px 24px 70px;align-items:start}
.docs-side{position:sticky;top:86px;max-height:calc(100vh - 110px);overflow:auto}
.docs-side-inner{border-right:1px solid var(--line);padding-right:20px}
.docs-side-head{display:flex;align-items:center;justify-content:space-between;
  padding:0 0 14px;margin-bottom:14px;border-bottom:1px solid var(--line)}
.docs-home{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:15px;color:var(--ink)}
.docs-home svg{width:17px;height:17px;color:var(--primary)}
.docs-ver{font-size:12px;color:var(--muted);background:var(--bg);
  padding:2px 8px;border-radius:20px}
.docs-grp{margin-bottom:20px}
.docs-grp-t{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--muted);
  text-transform:uppercase;margin-bottom:7px;padding-left:11px}
.docs-link{display:block;padding:7px 11px;border-radius:8px;font-size:13.8px;
  color:var(--ink-2);line-height:1.5;transition:background .15s,color .15s}
.docs-link:hover{background:var(--bg);color:var(--primary)}
.docs-link.on{background:linear-gradient(135deg,rgba(0,120,212,.09),rgba(15,155,224,.09));
  color:var(--primary);font-weight:600;box-shadow:inset 2px 0 0 var(--primary)}

.docs-main{min-width:0}
.docs-crumb{font-size:13px;color:var(--muted);margin-bottom:22px}
.docs-crumb a{color:var(--muted)}
.docs-crumb a:hover{color:var(--primary)}
.docs-crumb .sep{margin:0 7px;opacity:.5}
.docs-body h1{font-size:31px;line-height:1.3;margin:0 0 12px;letter-spacing:-.01em}
.docs-lead{font-size:15.5px;color:var(--muted);line-height:1.85;
  padding-bottom:22px;margin:0 0 28px;border-bottom:1px solid var(--line)}
.docs-content{font-size:15px;line-height:1.95;color:var(--ink-2)}
.docs-content h2{font-size:21px;margin:38px 0 14px;padding-top:6px;color:var(--ink)}
.docs-content h2:first-child{margin-top:0}
.docs-content h3{font-size:16.5px;margin:26px 0 10px;color:var(--ink)}
.docs-content p{margin:0 0 15px}
.docs-content ul,.docs-content ol{margin:0 0 16px;padding-left:22px}
.docs-content li{margin-bottom:7px}
.docs-content a{color:var(--primary);border-bottom:1px solid rgba(0,120,212,.28)}
.docs-content a:hover{border-bottom-color:var(--primary)}
.docs-content code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:13px;background:var(--bg);border:1px solid var(--line);
  padding:1.5px 6px;border-radius:5px;color:#0b5a9e}
.docs-content pre{background:#0f1c2e;color:#dbe7f3;border-radius:11px;
  padding:16px 18px;overflow:auto;margin:0 0 18px;line-height:1.75}
.docs-content pre code{background:none;border:0;padding:0;color:inherit;font-size:13px}
.doc-table{width:100%;border-collapse:collapse;margin:0 0 20px;font-size:14px}
.doc-table th{text-align:left;font-weight:600;color:var(--ink);
  background:var(--bg);padding:10px 13px;border:1px solid var(--line);white-space:nowrap}
.doc-table td{padding:10px 13px;border:1px solid var(--line);vertical-align:top;line-height:1.75}
.doc-note{background:linear-gradient(135deg,rgba(0,120,212,.055),rgba(15,155,224,.055));
  border:1px solid rgba(0,120,212,.18);border-left:3px solid var(--primary);
  border-radius:0 10px 10px 0;padding:14px 17px;margin:0 0 20px;font-size:14px;line-height:1.85}
.doc-note b{color:var(--primary)}

.docs-pager{display:flex;gap:14px;margin:46px 0 0;padding-top:26px;
  border-top:1px solid var(--line)}
.dp-side{flex:1;min-width:0}
.dp-side.right{display:flex;justify-content:flex-end}
.dp-link{display:block;max-width:100%;border:1px solid var(--line);border-radius:11px;
  padding:12px 16px;transition:border-color .15s,box-shadow .15s,transform .15s}
.dp-link:hover{border-color:var(--primary);box-shadow:0 6px 18px rgba(0,120,212,.1);transform:translateY(-1px)}
.dp-link.next{text-align:right}
.dp-dir{display:block;font-size:11.5px;color:var(--muted);letter-spacing:.06em;margin-bottom:3px}
.dp-t{display:block;font-size:14.5px;font-weight:600;color:var(--ink);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.docs-help{margin-top:30px;font-size:13.5px;color:var(--muted);line-height:1.9;
  background:var(--bg);border-radius:11px;padding:15px 18px}
.docs-help b{color:var(--ink-2)}

@media (max-width:900px){
  .docs-wrap{grid-template-columns:1fr;gap:0;padding:20px 18px 54px}
  .docs-side{position:static;max-height:none;margin-bottom:22px}
  .docs-side-inner{border-right:0;border-bottom:1px solid var(--line);padding:0 0 18px}
  .docs-nav{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:14px}
  .docs-grp{margin-bottom:0}
  .docs-body h1{font-size:25px}
  .docs-content{font-size:14.5px}
  .docs-pager{flex-direction:column}
  .dp-side.right{justify-content:flex-start}
  .dp-link.next{text-align:left}
}

/* ============================================================
   验证码（算式型，不依赖 GD）
   ============================================================ */
.captcha-row{display:flex;align-items:center;gap:10px}
.captcha-row input{max-width:130px}
.captcha-q{display:inline-flex;align-items:center;justify-content:center;
  min-width:96px;height:40px;padding:0 14px;border-radius:9px;
  background:var(--bg);border:1px solid var(--line);
  font-family:ui-monospace,Menlo,Consolas,monospace;font-size:15px;
  font-weight:600;color:var(--ink);letter-spacing:.04em;
  user-select:none;-webkit-user-select:none}
.captcha-field .hint{margin-top:6px}