/* 公开 SEO 站点样式：无外部字体、无内联样式，兼容 portalweb 的 CSP（style-src 'self'）。
   浅色、简洁、留白充足的 SaaS 风格：暖白背景、深藏蓝标题、明亮蓝强调、大圆角。 */
:root{--bg:#fbfaf7;--panel:#fff;--ink:#101d3c;--muted:#5c6a85;--line:#e8e4da;--accent:#2f6bff;--accent-ink:#fff;--dark:#101d3c;--code:#101a32;--code-ink:#e6edff;--max:1180px;color-scheme:light}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","PingFang SC","Hiragino Sans","Noto Sans CJK SC","Noto Sans JP","Microsoft YaHei",sans-serif}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
code,pre{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
code{font-size:.92em;background:#eef2f8;border-radius:4px;padding:2px 5px}
h1,h2,h3{line-height:1.25;margin:0 0 .5em;color:var(--ink);letter-spacing:-.01em}
h1{font-size:34px}
h2{font-size:24px;margin-top:1.4em}
h3{font-size:18px;margin-top:1.3em}
p{margin:0 0 1em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 22px}
.muted{color:var(--muted)}
.small{font-size:13px}
.skip{position:absolute;left:-999px;top:8px;background:var(--dark);color:#fff;padding:6px 12px;border-radius:8px}
.skip:focus{left:8px;z-index:10}

/* 顶部导航：白底、淡边框、左 logo 右按钮。 */
.top{background:rgba(255,255,255,.9);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.top-inner{display:flex;align-items:center;gap:22px;min-height:68px;flex-wrap:wrap}
.brand{display:inline-flex;align-items:center;gap:9px;font-size:18px;font-weight:800;color:var(--ink)}
.brand img{border-radius:9px}
.top-nav{display:flex;align-items:center;gap:20px;flex:1;flex-wrap:wrap}
.top-nav a{color:#3a4766;font-weight:600;font-size:14px}
.top-nav a:hover{color:var(--accent);text-decoration:none}
.top-nav .signin{margin-left:auto}
/* 语言切换：默认只显示当前语言，悬浮或键盘聚焦时展开列表（与注册页一致）。 */
.locale-switch{position:relative;flex:none}
.locale-current{display:inline-flex;align-items:center;gap:7px;height:36px;padding:0 12px;border:1px solid var(--line);border-radius:10px;background:var(--panel);color:var(--ink);font-size:13.5px;font-weight:650;white-space:nowrap;cursor:default;transition:border-color .15s ease}
.locale-current:hover,.locale-switch:focus-within .locale-current{border-color:var(--accent)}
.locale-icon{color:var(--accent);flex:none}
.locale-caret{color:var(--muted);flex:none;transition:transform .15s ease}
.locale-switch:hover .locale-caret,.locale-switch:focus-within .locale-caret{transform:rotate(180deg)}
.locale-menu{position:absolute;top:calc(100% - 2px);right:0;z-index:30;min-width:172px;padding:5px;background:var(--panel);border:1px solid var(--line);border-radius:12px;box-shadow:0 10px 32px rgba(16,29,60,.16);opacity:0;visibility:hidden;transform:translateY(-6px);transition:opacity .18s ease,transform .18s ease,visibility .18s ease}
.locale-switch:hover .locale-menu,.locale-switch:focus-within .locale-menu{opacity:1;visibility:visible;transform:translateY(0)}
.locale-menu a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 11px;border-radius:8px;color:var(--ink);font-size:13.5px;font-weight:600}
.locale-menu a:hover{background:#f2f6ff;color:var(--accent);text-decoration:none}
.locale-menu a[aria-current=true]{color:var(--accent)}
.locale-check{opacity:0;flex:none}
.locale-menu a[aria-current=true] .locale-check{opacity:1}

/* 按钮：主按钮深藏蓝，次按钮明亮蓝描边，圆角 12px。 */
.button{display:inline-block;padding:11px 22px;border-radius:12px;background:var(--dark);color:#fff;font-weight:700;border:1px solid var(--dark)}
.button:hover{text-decoration:none;background:#1d3058;border-color:#1d3058}
.button.ghost{background:transparent;color:var(--accent);border-color:var(--accent)}
.button.ghost:hover{background:#e9f2ff}
.button.small{padding:7px 14px;font-size:13px}
/* 汉堡按钮默认隐藏，仅在移动端且脚本可用时显示（见文件末尾媒体查询）。 */
.nav-toggle{display:none}
.actions{display:flex;gap:14px;flex-wrap:wrap;margin:26px 0;justify-content:center}

/* Hero：浅色、居中、柔和渐变光斑，深藏蓝大标题。 */
.hero{background:var(--bg);position:relative;overflow:hidden;padding:84px 0 56px;text-align:center}
.hero::before,.hero::after{content:'';position:absolute;border-radius:50%;filter:blur(90px);pointer-events:none}
.hero::before{width:560px;height:560px;top:-240px;right:-160px;background:linear-gradient(135deg,#dbe9ff,#c9f0ff);opacity:.85}
.hero::after{width:520px;height:520px;bottom:-260px;left:-180px;background:linear-gradient(135deg,#e8e4ff,#dbe9ff);opacity:.7}
.hero .wrap{position:relative}
.hero .eyebrow{color:var(--accent);font-size:13px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;margin:0 0 16px}
.hero h1{font-size:clamp(38px,5vw,68px);font-weight:800;letter-spacing:-.025em;max-width:900px;margin:0 auto 22px;line-height:1.12}
.hero .lead{font-size:clamp(16px,1.7vw,19px);max-width:800px;color:var(--muted);margin:0 auto 8px;line-height:1.7}
.hero .actions{margin:34px 0 8px}
.stats{list-style:none;margin:44px auto 0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:16px;max-width:860px;text-align:left}
.stats li{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:16px 18px;box-shadow:0 2px 10px rgba(16,29,60,.05)}
.stats strong{display:block;font-size:27px;line-height:1.15;color:var(--ink);font-weight:800}
.stats span{color:var(--muted);font-size:13px}

.section{padding:48px 0 10px;text-align:center}
.section.narrow{max-width:900px;text-align:left}
.section h2{font-size:clamp(26px,3vw,36px);font-weight:800;letter-spacing:-.02em}
.section>p{max-width:720px;margin:0 auto 10px;color:var(--muted);font-size:16px}
.cards{list-style:none;margin:26px 0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;text-align:left}
.cards a{display:block;height:100%;background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:18px 20px;color:var(--ink);box-shadow:0 2px 10px rgba(16,29,60,.04);transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease}
.cards a:hover{text-decoration:none;border-color:#c9ddff;box-shadow:0 8px 24px rgba(47,107,255,.12);transform:translateY(-3px)}
.cards strong{display:block;font-size:16px;margin-bottom:6px;color:var(--accent)}
.cards span{display:block;color:var(--muted);font-size:13px;line-height:1.6}
.steps{counter-reset:step;list-style:none;margin:26px 0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px;text-align:left}
.steps li{counter-increment:step;background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:20px 20px 20px 62px;position:relative;box-shadow:0 2px 10px rgba(16,29,60,.04)}
.steps li::before{content:counter(step);position:absolute;left:20px;top:20px;width:30px;height:30px;border-radius:10px;background:var(--accent);color:#fff;font-weight:800;display:grid;place-items:center;font-size:14px}
.steps strong{display:block;margin-bottom:6px}
.steps span{color:var(--muted);font-size:14px}
.features{list-style:none;margin:26px 0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;text-align:left}
.features li{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:0 2px 10px rgba(16,29,60,.04)}
.features strong{display:block;margin-bottom:6px}
.features span{color:var(--muted);font-size:14px}

.code{position:relative;margin:16px 0 22px;text-align:left}
.code pre{margin:0;padding:18px 16px;border-radius:14px;overflow:auto;background:var(--code);color:var(--code-ink);line-height:1.6;font-size:13px}
.code pre code{padding:0;background:none;color:inherit;white-space:pre}
.copy{position:absolute;top:9px;right:9px;padding:4px 10px;border:1px solid #455576;border-radius:8px;background:#263557;color:#f3f6ff;font-size:11px;cursor:pointer}
.copy:hover{background:#38507e}

/* 价格表：居中卡片，表格铺满容器宽度，金额右对齐并用等宽数字 */
.prices{max-width:1100px;margin:0 auto}
.prices-card{background:var(--panel);border:1px solid var(--line);border-radius:16px;box-shadow:0 1px 3px rgba(16,29,60,.04),0 10px 28px rgba(16,29,60,.05);overflow:hidden}
.prices-scroll{overflow-x:auto}
.prices table{width:100%;min-width:620px;border-collapse:collapse;table-layout:fixed;font-size:14px;text-align:left}
.prices th,.prices td{height:62px;padding:0 18px;vertical-align:middle;border-bottom:1px solid #eef0f4}
.prices th{border-bottom:1px solid var(--line);height:46px;background:#f7f7f4;color:var(--muted);font-size:12.5px;font-weight:700;white-space:nowrap}
.prices tbody tr:last-child td{border-bottom:0}
.prices tbody tr:hover{background:#f6f9ff}
.prices th:nth-child(1),.prices td:nth-child(1){width:46%;text-align:left}
.prices th:nth-child(2),.prices td:nth-child(2){width:14%}
.prices th:nth-child(3),.prices td:nth-child(3){width:20%}
.prices th:nth-child(4),.prices td:nth-child(4){width:20%}
.prices th:nth-child(2),.prices td:nth-child(2){text-align:center}
.prices th:nth-child(3),.prices th:nth-child(4),.prices td:nth-child(3),.prices td:nth-child(4){text-align:right}
.prices tbody a{color:#3a4766;font-weight:600}
.prices tbody a:hover{color:var(--accent);text-decoration:none}
.prices .per-task{color:#8a95a8;font-variant-numeric:tabular-nums}
.prices .per-k{color:var(--ink);font-weight:700;font-variant-numeric:tabular-nums}
.prices .status{display:inline-block;padding:3px 11px;border-radius:999px;background:#f1f2f5;color:var(--muted);font-size:12px;font-weight:600;white-space:nowrap}
.prices .status.ok{background:#e7f6ee;color:#1d7a46}
.prices .status.off{background:#fdf1e6;color:#a0541c}
.prices-foot{display:flex;align-items:center;justify-content:space-between;gap:12px 18px;flex-wrap:wrap;padding:12px 18px;border-top:1px solid #eef0f4;background:#fbfbf8}
.prices-foot p{margin:0;color:var(--muted);font-size:12.5px}
.prices-refresh{border:0;background:none;padding:2px 0;color:var(--accent);font:inherit;font-size:12.5px;font-weight:650;cursor:pointer;border-radius:6px}
.prices-refresh:hover{text-decoration:underline}
.prices-refresh:disabled{color:var(--muted);cursor:wait;text-decoration:none}
.prices-more{margin:14px 0 0!important;font-size:14px!important;color:var(--muted)}
.prices-more a{color:var(--accent);font-weight:650}
.faq details{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:4px 20px;margin:0 0 12px;text-align:left}
.faq summary{cursor:pointer;padding:12px 0;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:20px;color:var(--muted)}
.faq details[open] summary::after{content:"–"}
.faq summary h3{margin:0;font-size:16px}
.faq p{color:var(--muted);margin:0 0 14px}
/* CTA：浅蓝/青蓝/淡紫柔和渐变。 */
.cta{margin:56px 0 0;padding:72px 0;background:linear-gradient(135deg,#dbe9ff 0%,#c9f0ff 55%,#e8e4ff 100%);text-align:center}
.cta h2{margin-top:0}
.cta p{color:#4a5a7c}
.cta .actions{justify-content:center}

.docs{display:grid;grid-template-columns:240px minmax(0,1fr);gap:26px;align-items:start;padding-top:30px;padding-bottom:40px}
.side{position:sticky;top:84px;max-height:calc(100vh - 100px);overflow:auto;background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:16px}
.side-title{margin:0 0 10px;font-weight:700;font-size:13px}
.side h2{font-size:11px;letter-spacing:.05em;text-transform:uppercase;color:var(--muted);margin:14px 0 6px}
.side ul{list-style:none;margin:0;padding:0}
.side a{display:block;padding:6px 9px;border-radius:8px;color:#485a79;font-size:13px}
.side a:hover{background:#edf3ff;text-decoration:none}
.side a[aria-current=page]{background:#e9f2ff;color:var(--accent);font-weight:700}
.article{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:30px 34px}
.article h1{font-size:30px}
.article .eyebrow{color:var(--accent);font-size:12px;font-weight:800;letter-spacing:.05em;margin:0 0 8px}
.article .lead{color:var(--muted);font-size:15px}
.crumbs{font-size:13px;color:var(--muted);margin-bottom:14px}
.toc{background:#f7f6f2;border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin:18px 0}
.toc p{margin:0 0 6px;font-size:12px;font-weight:700;color:var(--muted)}
.toc ul{list-style:none;margin:0;padding:0;columns:2;column-gap:24px}
.toc li{font-size:13px;margin:3px 0;break-inside:avoid}
.toc li.h3{padding-left:14px}
.callout{margin:0 0 22px;padding:12px 15px;border:1px solid #d9e3fb;border-radius:12px;background:#f3f6ff;color:#3e537f;font-size:13px;line-height:1.75;overflow-wrap:anywhere}
.callout code{background:#e4ebfc}
.callout a{text-decoration:underline}
.prose{font-size:14px;line-height:1.8;overflow-wrap:anywhere}
.prose h2{font-size:22px;padding-top:6px}
.prose h3{font-size:17px}
.prose h4{font-size:15px;margin:1.2em 0 .5em}
.prose ul,.prose ol{padding-left:22px}
.prose li{margin:5px 0}
.prose a{text-decoration:underline}
.prose table{display:block;width:100%;overflow:auto;border-collapse:collapse;margin:14px 0 20px;font-size:13px}
.prose th,.prose td{min-width:100px;padding:9px 11px;border:1px solid #dfe6f0;text-align:left;vertical-align:top}
.prose th{background:#f5f3ee;white-space:nowrap}
.prose blockquote{margin:15px 0;padding:9px 15px;border-left:3px solid var(--accent);background:#f5f7fd}
.prose h2[id],.prose h3[id]{scroll-margin-top:84px}

.foot{margin-top:40px;border-top:1px solid var(--line);background:var(--panel);font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px;padding-top:36px;padding-bottom:20px}
.foot h2{font-size:13px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin:0 0 10px}
.foot ul{list-style:none;margin:0 0 18px;padding:0}
.foot li{margin:5px 0}
.foot li a{color:var(--ink)}
.directory-badges{display:flex;flex-wrap:wrap;align-items:center;gap:12px;padding-bottom:20px}
.directory-badges img{display:block;max-width:100%;height:auto}
.foot-end{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-top:14px;padding-bottom:24px;border-top:1px solid var(--line);color:var(--muted);font-size:12px}

@media(max-width:900px){.docs{grid-template-columns:minmax(0,1fr)}.foot-grid{grid-template-columns:1fr}.toc ul{columns:1}.top-nav .signin{margin-left:0}
/* 移动端目录改为单行横向浏览：否则 15 个目录项纵向铺开，正文被推到首屏之外。 */
.side{position:static;max-height:none;padding:10px 12px}
.side-title{display:none}
.side nav{display:flex;align-items:center;gap:8px;overflow-x:auto;white-space:nowrap;scrollbar-width:thin;-webkit-mask-image:linear-gradient(to right,#000 calc(100% - 20px),transparent);mask-image:linear-gradient(to right,#000 calc(100% - 20px),transparent)}
.side nav h2{flex:none;margin:0;padding:0;font-size:10px;letter-spacing:.06em}
.side nav ul{display:flex;flex:none;gap:4px;margin:0}
.side nav li{margin:0}
.side nav a{display:block;padding:7px 10px;border-radius:8px;background:#f5f3ee;font-size:12.5px}
.side nav a:hover{background:#e9f2ff;text-decoration:none}
.side nav a[aria-current=page]{background:#e9f2ff;color:var(--accent);font-weight:700}
.prose h2[id],.prose h3[id]{scroll-margin-top:120px}}
@media(max-width:600px){.hero{padding:52px 0 36px}.hero h1{font-size:31px}h1{font-size:28px}.article{padding:20px 16px}.wrap{padding:0 14px}.top-inner{gap:12px}}
button.button{font:inherit;cursor:pointer}
button.button:disabled{cursor:wait;opacity:.65}
@media(max-width:600px){.top-inner{padding-top:10px;padding-bottom:10px}.top-nav{order:4;flex-basis:100%;flex-direction:column;flex-wrap:nowrap;align-items:stretch;gap:0;padding-top:4px}.top-nav > a{padding:13px 4px;border-top:1px solid var(--line);text-align:left}.top-nav .signin{margin-left:0}.locale-current{height:32px;padding:0 9px;gap:5px;font-size:12px}.signup{margin-left:auto}.nav-toggle{display:none;margin-left:8px;align-items:center;justify-content:center;width:38px;height:38px;padding:0;border:1px solid var(--line);border-radius:10px;background:var(--panel);color:var(--ink);cursor:pointer}.nav-toggle-icon,.nav-toggle-close{display:block;font-size:19px;line-height:1}.nav-toggle-close{display:none}.nav-toggle[aria-expanded=true] .nav-toggle-icon{display:none}.nav-toggle[aria-expanded=true] .nav-toggle-close{display:block}.no-js .nav-toggle{display:none}.js .nav-toggle{display:inline-flex}.js .top-nav{display:none}.js .top-nav[data-open=true]{display:flex;max-height:calc(100dvh - 110px);overflow-y:auto}}

@media(max-width:600px){.prose h2[id],.prose h3[id]{scroll-margin-top:160px}}
.search-panel{position:relative;max-width:640px;margin:0 auto;padding:10px 0 4px}
.doc-search{position:relative}
.doc-search-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:#8b95ab;pointer-events:none}
.doc-search input{width:100%;height:46px;padding:0 16px 0 46px;border:1px solid var(--line);border-radius:14px;background:var(--panel);color:var(--ink);font:inherit;font-size:15px;box-shadow:0 1px 3px rgba(16,29,60,.04)}
.doc-search input::placeholder{color:#9aa5b8}
.doc-search input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(47,107,255,.14)}
.doc-search-status{display:block;margin:9px 2px 0;color:var(--muted);font-size:12.5px;min-height:1em}
.doc-search-status:empty{display:none}
.doc-search-results{list-style:none;position:absolute;left:0;right:0;top:calc(100% - 2px);z-index:40;margin:0;padding:6px;background:var(--panel);border:1px solid var(--line);border-radius:14px;box-shadow:0 14px 36px rgba(16,29,60,.14)}
.doc-search-results:empty{display:none}
.doc-search-results li{padding:9px 12px;border-radius:9px}
.doc-search-results li:hover{background:#f2f6ff}
.doc-search-results li a{display:block;font-weight:700;font-size:14px}
.doc-search-results li a:hover{text-decoration:none}
.doc-search-results li p{font-size:12.5px;color:var(--muted);margin:3px 0 0;line-height:1.5}
/* iOS Safari 在输入框字号小于 16px 时会在聚焦时自动放大页面；移动端保持 16px。 */
@media(max-width:600px){.doc-search input{font-size:16px}}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

.calc{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px 18px;margin:20px 0 18px;padding:18px;border:1px solid #dbe3f4;border-radius:14px;background:#fbfcff}
.calc-field{display:flex;flex-direction:column;gap:6px;font-size:13px;color:#42506e}
.calc-field span{font-weight:600}
.calc-field input,.calc-field select{font:inherit;padding:9px 11px;border:1px solid #cfd8ea;border-radius:10px;background:#fff;color:#1f2a44}
.calc-field input:focus,.calc-field select:focus{outline:2px solid #7f9cf5;outline-offset:1px}
.calc-result{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin:0 0 14px;padding:0}
.calc-result dt{margin:0;font-size:12px;color:#5b6b8c;font-weight:600}
.calc-result dd{margin:2px 0 0;font-size:22px;font-weight:700;color:#1b2540;font-variant-numeric:tabular-nums}