/* ==========================================================================
   GoRoBot · 官网样式
   设计基调：飞书式简洁 —— 白底、克制配色、大留白、细线分割、线性图标
   ========================================================================== */

:root{
  --brand:#3370ff;
  --brand-2:#1a4fd6;
  --brand-soft:#eef3ff;

  --ink:#1f2329;
  --ink-2:#4e5969;
  --ink-3:#8a919e;
  --ink-4:#b8bec8;

  --bg:#ffffff;
  --bg-2:#f6f7f9;
  --bg-3:#eff1f4;
  --dark:#15181d;
  --dark-2:#1d2127;

  --line:#e8eaee;
  --line-2:#f0f2f5;

  --ok:#00a870;
  --warn:#e37318;

  --r-s:6px;
  --r:10px;
  --r-l:16px;
  --r-xl:22px;

  --shadow-s:0 1px 2px rgba(31,35,41,.04);
  --shadow:0 4px 16px -4px rgba(31,35,41,.08), 0 1px 3px rgba(31,35,41,.04);
  --shadow-l:0 18px 48px -16px rgba(31,35,41,.16), 0 2px 8px rgba(31,35,41,.04);

  --max:1160px;
  --nav-h:64px;

  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB",
         "Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --mono:"SF Mono",ui-monospace,"JetBrains Mono",Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font);font-size:15px;line-height:1.7;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  font-feature-settings:"tnum" 1;
}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
button{font-family:inherit;cursor:pointer}
::selection{background:rgba(51,112,255,.16)}

/* ---------- 版心 ---------- */
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.wrap-s{max-width:820px;margin:0 auto;padding:0 24px}

/* ==========================================================================
   导航
   ========================================================================== */
.nav{
  position:sticky;top:0;z-index:100;height:var(--nav-h);
  background:rgba(255,255,255,.82);backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line-2);
}
.nav-in{
  max-width:var(--max);margin:0 auto;padding:0 24px;height:100%;
  display:flex;align-items:center;gap:34px;
}
.brand{display:flex;align-items:center;gap:9px;font-weight:650;font-size:15.5px;letter-spacing:-.01em}
.brand-mark{
  width:24px;height:24px;flex:0 0 auto;display:block;
  box-shadow:0 1px 3px rgba(43,94,224,.28);border-radius:5px;overflow:hidden;
}
.brand-mark svg{width:100%;height:100%;display:block}
.brand small{
  font-weight:500;font-size:10px;color:var(--ink-3);letter-spacing:.04em;
  border:1px solid var(--line);border-radius:4px;padding:1px 5px;margin-left:1px;
}
.nav-links{display:flex;align-items:center;gap:30px;margin-left:8px}
.nav-links a{font-size:14px;color:var(--ink-2);transition:color .16s}
.nav-links a:hover{color:var(--ink)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
/* 「用户登录」：跳转验证系统，加个细微的箭头提示是外链 */
.nav-login svg{width:13px;height:13px;stroke:currentColor;fill:none;stroke-width:1.7;
  opacity:.75;transition:opacity .16s,transform .16s}
.nav-login:hover svg{opacity:1;transform:translateX(2px)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  height:38px;padding:0 18px;border-radius:var(--r-s);
  font-size:14px;font-weight:500;border:1px solid transparent;
  transition:background .16s,border-color .16s,color .16s,transform .16s,box-shadow .16s;
  white-space:nowrap;
}
.btn svg{width:14px;height:14px;stroke-width:1.8;fill:none;stroke:currentColor}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 1px 2px rgba(51,112,255,.24)}
.btn-primary:hover{background:var(--brand-2);box-shadow:0 4px 14px -3px rgba(51,112,255,.4)}
.btn-ghost{background:#fff;color:var(--ink-2);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--ink-4);color:var(--ink)}
.btn-lg{height:46px;padding:0 26px;font-size:15px;border-radius:8px}
.btn-text{color:var(--brand);padding:0;height:auto;background:none}
.btn-text:hover{color:var(--brand-2)}
.btn-text svg{width:13px;height:13px;transition:transform .18s}
.btn-text:hover svg{transform:translateX(3px)}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero{padding:96px 0 0;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:-10% -10% auto;height:620px;z-index:0;
  background:
    radial-gradient(760px 380px at 50% -6%, rgba(51,112,255,.075), transparent 68%),
    radial-gradient(520px 300px at 84% 16%, rgba(51,112,255,.05), transparent 70%);
  pointer-events:none;
}
.hero .wrap{position:relative;z-index:1}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px 0 9px;
  border:1px solid var(--line);border-radius:999px;background:#fff;
  font-size:12.5px;color:var(--ink-2);box-shadow:var(--shadow-s);
}
.eyebrow i{
  width:6px;height:6px;border-radius:50%;background:var(--ok);
  box-shadow:0 0 0 3px rgba(0,168,112,.14);
}
.eyebrow b{font-weight:600;color:var(--ink)}

h1.hero-title{
  margin:26px 0 0;font-size:clamp(34px,4.6vw,58px);line-height:1.14;
  letter-spacing:-.028em;font-weight:680;
}
h1.hero-title em{font-style:normal;color:var(--brand)}
.hero-sub{
  margin:22px 0 0;max-width:620px;font-size:17.5px;line-height:1.75;color:var(--ink-2);
  letter-spacing:-.005em;
}
.hero-cta{margin-top:34px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.hero-meta{
  margin-top:22px;display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-3);
}
.hero-meta span{display:inline-flex;align-items:center;gap:6px}
.hero-meta svg{width:13px;height:13px;stroke:var(--ok);fill:none;stroke-width:2}

/* ---------- 产品界面示意 ---------- */
.shot{
  margin:58px auto 0;max-width:1000px;
  border:1px solid var(--line);border-radius:var(--r-xl);
  background:#fff;box-shadow:var(--shadow-l);overflow:hidden;
}
.shot-bar{
  height:38px;display:flex;align-items:center;gap:7px;padding:0 15px;
  background:var(--bg-2);border-bottom:1px solid var(--line-2);
}
.shot-bar i{width:9px;height:9px;border-radius:50%;background:#dfe2e7}
.shot-bar span{margin-left:10px;font-size:11.5px;color:var(--ink-3);font-family:var(--mono)}
.shot-body{display:grid;grid-template-columns:184px 1fr;min-height:352px}

.shot-side{border-right:1px solid var(--line-2);padding:14px 10px;background:#fcfcfd}
.shot-side .si{
  display:flex;align-items:center;gap:9px;height:32px;padding:0 10px;border-radius:7px;
  font-size:12.5px;color:var(--ink-2);margin-bottom:2px;
}
.shot-side .si.on{background:var(--brand-soft);color:var(--brand);font-weight:600}
.shot-side .si svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:1.55;flex:0 0 auto}
.shot-side .si em{
  margin-left:auto;font-style:normal;font-size:10px;color:var(--ink-3);
  background:var(--bg-3);border-radius:4px;padding:0 5px;line-height:16px;
}

.shot-main{padding:20px 24px;display:flex;flex-direction:column;gap:16px}
.shot-h{display:flex;align-items:center;gap:10px}
.shot-h h4{margin:0;font-size:14.5px;font-weight:620;letter-spacing:-.01em}
.shot-h .pill{
  font-size:10.5px;line-height:17px;padding:0 7px;border-radius:5px;
  background:rgba(0,168,112,.09);color:var(--ok);font-weight:600;
}
.shot-h .pill.free{background:rgba(227,115,24,.1);color:var(--warn)}

.acc-row{
  display:grid;grid-template-columns:1fr 84px 128px 66px;align-items:center;gap:12px;
  padding:11px 13px;border:1px solid var(--line-2);border-radius:9px;background:#fff;
  font-size:12.5px;
}
.acc-row .nm{font-weight:560;display:flex;align-items:center;gap:8px}
.acc-row .av{
  width:22px;height:22px;border-radius:6px;background:var(--bg-3);
  display:grid;place-items:center;font-size:10px;color:var(--ink-2);font-weight:600;
}
.acc-row .st{display:inline-flex;align-items:center;gap:5px;color:var(--ok);font-size:11.5px}
.acc-row .st i{width:5px;height:5px;border-radius:50%;background:var(--ok)}
.acc-row .st.off{color:var(--ink-3)}
.acc-row .st.off i{background:var(--ink-4)}
.acc-row .st.blk{color:var(--warn)}
.acc-row .st.blk i{background:var(--warn)}
.acc-row code{font-family:var(--mono);font-size:11.5px;color:var(--ink-3)}

.log-list{
  border:1px solid var(--line-2);border-radius:9px;overflow:hidden;flex:1;
  display:flex;flex-direction:column;
}
.log-line{
  display:flex;align-items:center;gap:10px;padding:8px 13px;font-size:12px;
  border-bottom:1px solid var(--line-2);color:var(--ink-2);
}
.log-line:last-child{border-bottom:0}
.log-line time{font-family:var(--mono);font-size:11px;color:var(--ink-4);flex:0 0 auto}
.log-line .tagm{
  font-size:10px;line-height:16px;padding:0 6px;border-radius:4px;flex:0 0 auto;
  background:var(--bg-3);color:var(--ink-2);font-weight:600;letter-spacing:.02em;
}
.log-line .tagm.img{background:rgba(51,112,255,.1);color:var(--brand)}
.log-line .tagm.txt{background:rgba(0,168,112,.1);color:var(--ok)}
.log-line .body{
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0;
}
.log-line .dup{
  margin-left:auto;font-size:10px;color:var(--ink-4);flex:0 0 auto;
  border:1px dashed var(--line);border-radius:4px;padding:0 5px;line-height:15px;
}

/* ==========================================================================
   通用区块
   ========================================================================== */
section{padding:104px 0}
section.tight{padding:76px 0}
.sec-head{max-width:700px;margin-bottom:52px}
.sec-kicker{
  font-size:12.5px;font-weight:640;letter-spacing:.08em;text-transform:uppercase;
  color:var(--brand);margin-bottom:14px;
}
h2.sec-title{
  margin:0;font-size:clamp(26px,3.1vw,38px);line-height:1.24;
  letter-spacing:-.024em;font-weight:660;
}
.sec-desc{margin:16px 0 0;font-size:16px;line-height:1.78;color:var(--ink-2)}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}

/* ---------- 能力卡片 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}

.card{
  border:1px solid var(--line);border-radius:var(--r-l);padding:26px 24px 28px;
  background:#fff;transition:border-color .2s,box-shadow .2s,transform .2s;
}
.card:hover{border-color:#d9dde4;box-shadow:var(--shadow);transform:translateY(-2px)}
.card-ic{
  width:38px;height:38px;border-radius:10px;background:var(--brand-soft);
  display:grid;place-items:center;margin-bottom:18px;
}
.card-ic svg{width:19px;height:19px;stroke:var(--brand);fill:none;stroke-width:1.6;
  stroke-linecap:round;stroke-linejoin:round}
.card h3{margin:0 0 9px;font-size:16px;font-weight:620;letter-spacing:-.012em}
.card p{margin:0;font-size:14px;line-height:1.75;color:var(--ink-2)}
.card ul{margin:14px 0 0;padding:0;list-style:none;display:flex;flex-direction:column;gap:8px}
.card ul li{
  font-size:13px;color:var(--ink-2);display:flex;gap:8px;align-items:flex-start;line-height:1.6;
}
.card ul li::before{
  content:"";width:5px;height:5px;border-radius:50%;background:var(--brand);
  margin-top:8px;flex:0 0 auto;opacity:.55;
}

/* ---------- 功能全景 ---------- */
.feat-wrap{display:grid;grid-template-columns:repeat(2,1fr);gap:0 56px}
.feat-group{padding:26px 0;border-top:1px solid var(--line-2)}
.feat-group:nth-child(-n+2){border-top:0;padding-top:0}
.feat-group h3{
  margin:0 0 14px;font-size:13px;font-weight:640;letter-spacing:.05em;
  text-transform:uppercase;color:var(--ink-3);
}
.feat-list{display:flex;flex-direction:column;gap:11px}
.feat-item{display:flex;gap:11px;align-items:flex-start}
.feat-item svg{
  width:15px;height:15px;stroke:var(--brand);fill:none;stroke-width:1.9;
  flex:0 0 auto;margin-top:4px;opacity:.85;
}
.feat-item svg.pro{stroke:var(--warn)}
.feat-item b{font-weight:600;font-size:14px;letter-spacing:-.005em}
.feat-item span{color:var(--ink-2);font-size:13.5px}

/* ==========================================================================
   版本对比
   ========================================================================== */
.cmp{
  border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;background:#fff;
  box-shadow:var(--shadow-s);
}
.cmp-table{width:100%;border-collapse:collapse}
.cmp-table th,.cmp-table td{
  padding:15px 22px;text-align:left;font-size:14px;border-bottom:1px solid var(--line-2);
  vertical-align:middle;
}
.cmp-table thead th{
  background:var(--bg-2);font-size:13px;font-weight:620;color:var(--ink);
  border-bottom:1px solid var(--line);padding-top:17px;padding-bottom:17px;
}
.cmp-table thead th:first-child{width:38%;color:var(--ink-3);font-weight:500}
.cmp-table thead th .th-in{display:flex;align-items:center;gap:9px}
.cmp-table th.mid .th-in{justify-content:center}
.cmp-table thead th .badge{
  font-size:10.5px;font-weight:600;line-height:18px;padding:0 7px;border-radius:5px;
  background:rgba(0,168,112,.1);color:var(--ok);
}
.cmp-table thead th .badge.free{background:var(--bg-3);color:var(--ink-2)}
.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table tbody tr:hover{background:#fafbfc}
.cmp-table td:first-child{color:var(--ink-2)}
.cmp-table td.mid,.cmp-table th.mid{text-align:center;width:24%}
.cmp-table td.mid{font-size:13.5px}
.cmp-group td{
  background:#fcfcfd;font-size:12px;font-weight:640;color:var(--ink-3);
  letter-spacing:.06em;text-transform:uppercase;padding:9px 22px;
}
.yes{display:inline-flex;align-items:center;gap:6px;color:var(--ok);font-weight:500}
.yes svg{width:14px;height:14px;stroke:var(--ok);fill:none;stroke-width:2.2}
.no{display:inline-flex;align-items:center;gap:6px;color:var(--ink-4)}
.no svg{width:14px;height:14px;stroke:var(--ink-4);fill:none;stroke-width:2}
.val{font-weight:600;color:var(--ink)}

/* ==========================================================================
   价格
   ========================================================================== */
.price-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.plan{
  position:relative;border:1px solid var(--line);border-radius:var(--r-l);
  padding:26px 22px 24px;background:#fff;display:flex;flex-direction:column;
  transition:border-color .2s,box-shadow .2s,transform .2s;
}
.plan:hover{border-color:#d9dde4;box-shadow:var(--shadow);transform:translateY(-2px)}
.plan.best{border-color:var(--brand);box-shadow:0 0 0 3px rgba(51,112,255,.08)}
.plan-tag{
  position:absolute;top:-10px;left:22px;height:20px;padding:0 9px;border-radius:5px;
  background:var(--brand);color:#fff;font-size:10.5px;font-weight:600;line-height:20px;
  letter-spacing:.02em;
}
.plan-name{font-size:14px;font-weight:620;color:var(--ink);margin-bottom:2px}
.plan-desc{font-size:12.5px;color:var(--ink-3);margin-bottom:20px}
.plan-price{display:flex;align-items:baseline;gap:3px;margin-bottom:3px}
.plan-price .cur{font-size:16px;font-weight:600;color:var(--ink);margin-right:1px}
.plan-price .num{
  font-size:38px;font-weight:680;letter-spacing:-.035em;line-height:1;
  font-variant-numeric:tabular-nums;
}
.plan-price .unit{font-size:13px;color:var(--ink-3);margin-left:3px}
.plan-equiv{font-size:12px;color:var(--ink-3);margin-bottom:20px;min-height:18px}
.plan-equiv b{color:var(--brand);font-weight:600}
.plan .btn{width:100%;margin-bottom:18px}
.plan-feats{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px}
.plan-feats li{
  font-size:13px;color:var(--ink-2);display:flex;gap:8px;align-items:flex-start;line-height:1.55;
}
.plan-feats svg{
  width:13.5px;height:13.5px;stroke:var(--ok);fill:none;stroke-width:2.2;flex:0 0 auto;margin-top:4px;
}
.price-note{
  margin-top:26px;padding:16px 20px;border-radius:var(--r);
  background:var(--bg-2);font-size:13px;color:var(--ink-2);line-height:1.75;
  display:flex;gap:11px;align-items:flex-start;
}
.price-note svg{
  width:15px;height:15px;stroke:var(--ink-3);fill:none;stroke-width:1.8;flex:0 0 auto;margin-top:3px;
}

/* ==========================================================================
   深色区块（技术特性）
   ========================================================================== */
.dark-sec{background:var(--dark);color:#fff;padding:96px 0}
.dark-sec .sec-kicker{color:#7fa4ff}
.dark-sec h2.sec-title{color:#fff}
.dark-sec .sec-desc{color:rgba(255,255,255,.62)}
.dark-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:rgba(255,255,255,.09);
  border:1px solid rgba(255,255,255,.09);border-radius:var(--r-l);overflow:hidden;margin-top:52px}
.dark-cell{background:var(--dark);padding:28px 26px;transition:background .2s}
.dark-cell:hover{background:var(--dark-2)}
.dark-cell .n{
  font-family:var(--mono);font-size:11px;color:#7fa4ff;margin-bottom:14px;letter-spacing:.04em;
}
.dark-cell h3{margin:0 0 9px;font-size:15.5px;font-weight:600;color:#fff;letter-spacing:-.01em}
.dark-cell p{margin:0;font-size:13.5px;line-height:1.72;color:rgba(255,255,255,.58)}
.dark-cell code{
  font-family:var(--mono);font-size:12px;color:#9fb8ff;background:rgba(127,164,255,.1);
  padding:1px 5px;border-radius:4px;
}

/* ==========================================================================
   文档入口
   ========================================================================== */
.docs-cta{
  display:grid;grid-template-columns:1.1fr 1fr;gap:44px;align-items:center;
  border:1px solid var(--line);border-radius:var(--r-xl);padding:44px 44px;
  background:linear-gradient(150deg,#fff 0%,var(--bg-2) 100%);
}
.docs-cta h2{margin:0 0 14px;font-size:clamp(22px,2.6vw,30px);letter-spacing:-.022em;
  line-height:1.3;font-weight:660}
.docs-cta p{margin:0 0 26px;font-size:15px;color:var(--ink-2);line-height:1.78}
.code-mini{
  background:var(--dark);border-radius:var(--r);padding:18px 20px;overflow:hidden;
  font-family:var(--mono);font-size:12.5px;line-height:1.85;color:#c9d1d9;
  box-shadow:var(--shadow);
}
.code-mini .c-key{color:#ff7b72}
.code-mini .c-fn{color:#d2a8ff}
.code-mini .c-str{color:#a5d6ff}
.code-mini .c-com{color:#6e7681}
.code-mini .c-cls{color:#ffa657}

/* ==========================================================================
   常见问题
   ========================================================================== */
.faq{border-top:1px solid var(--line-2)}
.faq details{border-bottom:1px solid var(--line-2)}
.faq summary{
  list-style:none;cursor:pointer;padding:22px 0;display:flex;align-items:center;gap:14px;
  font-size:15.5px;font-weight:560;letter-spacing:-.008em;transition:color .16s;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--brand)}
.faq summary .ico{
  margin-left:auto;width:18px;height:18px;flex:0 0 auto;position:relative;
}
.faq summary .ico::before,.faq summary .ico::after{
  content:"";position:absolute;background:var(--ink-3);border-radius:1px;
  transition:transform .2s,background .2s;
}
.faq summary .ico::before{left:0;top:8px;width:18px;height:1.5px}
.faq summary .ico::after{left:8px;top:0;width:1.5px;height:18px}
.faq details[open] summary .ico::after{transform:rotate(90deg)}
.faq details[open] summary .ico::before{background:var(--brand)}
.faq .ans{padding:0 32px 24px 0;font-size:14.5px;line-height:1.82;color:var(--ink-2)}
.faq .ans p{margin:0 0 10px}
.faq .ans p:last-child{margin:0}
.faq .ans code{
  font-family:var(--mono);font-size:12.5px;background:var(--bg-3);padding:1.5px 5px;
  border-radius:4px;color:var(--ink);
}

/* ==========================================================================
   页脚
   ========================================================================== */
.footer{background:var(--bg-2);border-top:1px solid var(--line);padding:60px 0 34px}
.foot-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:40px}
.foot-brand p{margin:14px 0 0;font-size:13px;color:var(--ink-3);line-height:1.75;max-width:260px}
.foot-col h4{
  margin:0 0 14px;font-size:12.5px;font-weight:640;color:var(--ink);letter-spacing:.03em;
}
.foot-col a{display:block;font-size:13px;color:var(--ink-2);margin-bottom:10px;transition:color .16s}
.foot-col a:hover{color:var(--brand)}
.foot-bot{
  border-top:1px solid var(--line);padding-top:24px;display:flex;align-items:center;
  gap:16px;flex-wrap:wrap;font-size:12.5px;color:var(--ink-3);
}
.foot-bot .sp{margin-left:auto;display:flex;gap:18px}
.foot-disclaimer{
  margin:16px 0 0;font-size:12px;line-height:1.75;color:var(--ink-4);
  max-width:820px;letter-spacing:.005em;
}
.foot-disclaimer b{color:var(--ink-3);font-weight:600}

/* ==========================================================================
   文档页
   ========================================================================== */
.doc-layout{display:grid;grid-template-columns:230px 1fr;gap:52px;padding:44px 0 90px;
  max-width:var(--max);margin:0 auto;padding-left:24px;padding-right:24px;align-items:start}
.doc-side{position:sticky;top:calc(var(--nav-h) + 24px);max-height:calc(100vh - var(--nav-h) - 48px);
  overflow-y:auto;padding-right:8px}
.doc-side::-webkit-scrollbar{width:4px}
.doc-side::-webkit-scrollbar-thumb{background:var(--line);border-radius:2px}
.doc-side h5{
  margin:22px 0 9px;font-size:11px;font-weight:640;letter-spacing:.07em;
  text-transform:uppercase;color:var(--ink-3);
}
.doc-side h5:first-child{margin-top:0}
.doc-side a{
  display:block;font-size:13.5px;color:var(--ink-2);padding:5px 0 5px 11px;
  border-left:2px solid transparent;transition:color .14s,border-color .14s;
}
.doc-side a:hover{color:var(--brand);border-left-color:rgba(51,112,255,.3)}
.doc-side a.on{color:var(--brand);border-left-color:var(--brand);font-weight:560}

.doc-main{min-width:0}
.doc-main h1{
  margin:0 0 12px;font-size:34px;letter-spacing:-.026em;line-height:1.24;font-weight:670;
}
.doc-main .lede{font-size:16px;color:var(--ink-2);line-height:1.8;margin:0 0 40px}
.doc-main h2{
  margin:56px 0 16px;font-size:23px;letter-spacing:-.018em;font-weight:650;
  padding-top:12px;scroll-margin-top:calc(var(--nav-h) + 20px);
}
.doc-main h2:first-of-type{margin-top:0}
.doc-main h3{
  margin:32px 0 11px;font-size:16.5px;font-weight:620;letter-spacing:-.01em;
  scroll-margin-top:calc(var(--nav-h) + 20px);
}
.doc-main h4{margin:24px 0 9px;font-size:14.5px;font-weight:620;color:var(--ink)}
.doc-main p{margin:0 0 14px;font-size:14.5px;line-height:1.82;color:var(--ink-2)}
.doc-main ul,.doc-main ol{margin:0 0 16px;padding-left:20px}
.doc-main li{font-size:14.5px;line-height:1.8;color:var(--ink-2);margin-bottom:7px}
.doc-main li b,.doc-main p b{color:var(--ink);font-weight:600}
.doc-main a.inline{color:var(--brand)}
.doc-main a.inline:hover{text-decoration:underline}

.doc-main code{
  font-family:var(--mono);font-size:.87em;background:var(--bg-3);color:#c4353c;
  padding:1.5px 5px;border-radius:4px;
}
.doc-main pre{
  margin:0 0 20px;background:var(--dark);border-radius:var(--r);padding:18px 20px;
  overflow-x:auto;font-family:var(--mono);font-size:12.8px;line-height:1.8;
  color:#c9d1d9;box-shadow:var(--shadow-s);
}
.doc-main pre code{background:none;color:inherit;padding:0;font-size:inherit}
.doc-main pre::-webkit-scrollbar{height:6px}
.doc-main pre::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:3px}

.doc-table{width:100%;border-collapse:collapse;margin:0 0 20px;font-size:13.5px;
  table-layout:fixed}
.doc-table th{
  text-align:left;padding:10px 14px;background:var(--bg-2);font-weight:620;
  font-size:12.5px;color:var(--ink);border-bottom:1px solid var(--line);
}
.doc-table td{
  padding:10px 14px;border-bottom:1px solid var(--line-2);color:var(--ink-2);
  vertical-align:top;line-height:1.7;overflow-wrap:anywhere;
}
.doc-table th:nth-child(1),.doc-table td:nth-child(1){width:40%}
.doc-table th:nth-child(2),.doc-table td:nth-child(2){width:13%}
.doc-table th:nth-child(3),.doc-table td:nth-child(3){width:47%}
.doc-table td:first-child{white-space:nowrap}
.doc-table td:first-child code{white-space:normal;overflow-wrap:anywhere;
  display:inline-block;max-width:100%}
.doc-table tr:last-child td{border-bottom:0}
.doc-table code{font-size:12px}

/* 四列的数据源清单表 */
.src-table th:nth-child(1),.src-table td:nth-child(1){width:26%}
.src-table th:nth-child(2),.src-table td:nth-child(2){width:20%}
.src-table th:nth-child(3),.src-table td:nth-child(3){width:44%}
.src-table th:nth-child(4),.src-table td:nth-child(4){width:10%;
  white-space:nowrap;color:var(--ink-3);font-variant-numeric:tabular-nums}

/* 提示块：文档里给「容易踩的坑」用 */
.doc-main .note{
  margin:0 0 22px;padding:14px 16px 14px 17px;border-radius:9px;
  background:var(--brand-soft);border:1px solid rgba(51,112,255,.18);
  border-left:3px solid var(--brand);
  font-size:13.5px;line-height:1.78;color:var(--ink-2);
}
.doc-main .note b{color:var(--ink);font-weight:620}
.doc-main .note code{background:rgba(51,112,255,.1);color:#2450c8}

/* 有序步骤列表 */
.doc-main .doc-list{
  margin:0 0 22px;padding-left:22px;font-size:14px;line-height:1.85;color:var(--ink-2);
}
.doc-main .doc-list li{margin-bottom:7px}
.doc-main .doc-list li:last-child{margin-bottom:0}
.doc-main .doc-list b{color:var(--ink);font-weight:620}
.doc-main .doc-list code{background:var(--bg-2);padding:1px 5px;border-radius:4px;font-size:12.5px}

.callout{
  display:flex;gap:12px;padding:15px 18px;border-radius:var(--r);margin:0 0 20px;
  background:var(--brand-soft);border:1px solid rgba(51,112,255,.16);font-size:13.5px;
  line-height:1.75;color:var(--ink-2);
}
.callout svg{width:16px;height:16px;stroke:var(--brand);fill:none;stroke-width:1.8;flex:0 0 auto;
  margin-top:2px}
.callout.warn{background:rgba(227,115,24,.06);border-color:rgba(227,115,24,.18)}
.callout.warn svg{stroke:var(--warn)}
.callout b{color:var(--ink);font-weight:600}

.badge-inline{
  display:inline-block;font-size:10.5px;font-weight:600;line-height:17px;padding:0 6px;
  border-radius:4px;background:rgba(227,115,24,.1);color:var(--warn);margin-left:5px;
  vertical-align:1px;
}
.badge-inline.free{background:var(--bg-3);color:var(--ink-2)}

/* ==========================================================================
   响应式
   ========================================================================== */
/* 768~1024：导航有三个按钮（文档 / 用户登录 / 获取授权），先收紧内边距 */
@media (max-width:900px){
  .nav-in{gap:22px}
  .nav-links{gap:20px}
  .nav-right{gap:8px}
  .nav-right .btn{height:36px;padding:0 13px;font-size:13.5px}
  .nav-right .nav-login{padding:0 11px}
}

@media (max-width:1024px){
  .grid-3,.grid-4,.dark-grid,.price-grid{grid-template-columns:repeat(2,1fr)}
  .feat-wrap{grid-template-columns:1fr;gap:0}
  .feat-group:nth-child(2){border-top:1px solid var(--line-2);padding-top:26px}
  .docs-cta{grid-template-columns:1fr;gap:32px;padding:34px}
  .foot-top{grid-template-columns:1fr 1fr;gap:28px}
  .doc-layout{grid-template-columns:1fr;gap:0;padding-top:28px}
  .doc-side{position:static;max-height:none;display:none}
  .shot-body{grid-template-columns:1fr}
  .shot-side{display:none}
}
@media (max-width:720px){
  :root{--nav-h:56px}
  body{font-size:14.5px}
  .nav-links{display:none}
  /* 小屏导航空间紧：隐藏次要按钮，只留「用户登录」+「获取授权」 */
  .nav-right{gap:7px}
  .nav-right .btn{height:34px;padding:0 12px;font-size:13px}
  .nav-right .nav-login{padding:0 10px}
  .nav-right .btn-ghost:not(.nav-login){display:none}
  .hero{padding-top:64px}
  section{padding:72px 0}
  .grid-3,.grid-4,.grid-2,.dark-grid,.price-grid{grid-template-columns:1fr}
  .hero-sub{font-size:16px}
  .hero-meta{gap:12px}
  .shot{margin-top:38px;border-radius:var(--r-l)}
  .shot-main{padding:16px}
  .acc-row{grid-template-columns:1fr auto;gap:8px;row-gap:4px}
  .acc-row .st{grid-column:2}
  .cmp-table th,.cmp-table td{padding:12px 13px;font-size:13px}
  .cmp-table thead th:first-child{width:34%}
  .cmp-table td.mid,.cmp-table th.mid{width:31%}
  .doc-table{table-layout:auto;font-size:12.5px}
  .doc-table th:nth-child(n),.doc-table td:nth-child(n){width:auto}
  .doc-table th,.doc-table td{padding:8px 10px}
  .doc-table td:first-child{white-space:normal}
  .doc-main pre{font-size:11.5px;padding:14px 14px}
  .foot-top{grid-template-columns:1fr}
  .doc-main h1{font-size:26px}
  .doc-main h2{font-size:20px;margin-top:40px}
  .log-line .dup{display:none}
}

/* ==========================================================================
   官方社区（QQ 群）
   ========================================================================== */
.community{padding:0 0 104px}
.comm-card{
  display:grid;grid-template-columns:1fr auto;align-items:center;gap:48px;
  padding:44px 48px;border:1px solid var(--line);border-radius:16px;
  background:
    radial-gradient(900px 220px at 88% -40%,rgba(51,112,255,.09),transparent 70%),
    var(--bg-2);
}
.comm-kicker{
  font-size:12.5px;font-weight:640;letter-spacing:.08em;text-transform:uppercase;
  color:var(--brand);margin-bottom:12px;
}
.comm-title{margin:0;font-size:23px;line-height:1.34;font-weight:650;letter-spacing:-.012em;color:var(--ink)}
.comm-desc{margin:12px 0 0;font-size:14.5px;line-height:1.8;color:var(--ink-2);max-width:520px}
.comm-desc a{color:var(--brand);text-decoration:none;border-bottom:1px solid rgba(51,112,255,.32)}
.comm-desc a:hover{border-bottom-color:var(--brand)}

.comm-num{display:flex;align-items:center;gap:10px;margin-top:20px;flex-wrap:wrap}
.comm-num-label{
  font-size:11.5px;font-weight:600;letter-spacing:.04em;color:var(--ink-3);
  background:#fff;border:1px solid var(--line);border-radius:6px;padding:3px 8px;
}
.comm-num-val{
  font-size:20px;font-weight:660;color:var(--ink);letter-spacing:.01em;
  font-variant-numeric:tabular-nums;
}
.comm-copy{
  display:inline-flex;align-items:center;gap:5px;height:28px;padding:0 10px;
  font-size:12px;font-weight:560;color:var(--ink-2);background:#fff;
  border:1px solid var(--line);border-radius:6px;cursor:pointer;
  font-family:inherit;transition:border-color .16s,color .16s;
}
.comm-copy:hover{border-color:var(--ink-4);color:var(--ink)}
.comm-copy svg{width:12px;height:12px;stroke:currentColor;fill:none;stroke-width:1.5}
.comm-copy.done{color:var(--ok);border-color:rgba(0,168,112,.45)}

.comm-side{display:flex;flex-direction:column;align-items:center;gap:12px;flex:0 0 auto}
.comm-join{gap:9px;white-space:nowrap;box-shadow:0 6px 18px -6px rgba(51,112,255,.5)}
.comm-join svg{width:17px;height:17px;fill:currentColor;opacity:.95}
.comm-hint{font-size:12px;color:var(--ink-3);white-space:nowrap}

@media (max-width:900px){
  .comm-card{grid-template-columns:1fr;gap:30px;padding:34px 30px}
  .comm-side{align-items:flex-start}
  .comm-desc{max-width:none}
}
@media (max-width:720px){
  .community{padding-bottom:72px}
  .comm-card{padding:28px 22px;border-radius:14px}
  .comm-title{font-size:20px}
  .comm-num-val{font-size:18px}
  .comm-join{width:100%;justify-content:center}
  .comm-hint{white-space:normal}
}