:root{--bg:#f6f7f9;--fg:#14202b;--muted:#5b6673;--line:#e1e5ea;--soft:#eef2f6;--accent:#16507e;--accent-2:#0f7a68;--accent-fg:#fff;--card:#fff;--error:#a3261d;--warn:#b4532a;--ink:#0d2236;--ink-fg:#e9eef4;--shadow:0 1px 2px rgba(16,32,48,.06),0 8px 24px rgba(16,32,48,.06);--radius:12px}
@media (prefers-color-scheme:dark){:root{--bg:#0f1418;--fg:#e6ebf0;--muted:#9aa5b1;--line:#26303a;--soft:#18212a;--accent:#6fa8d8;--accent-2:#4cc2a6;--accent-fg:#0b1218;--card:#151c22;--error:#f08b82;--warn:#e39a6f;--ink:#0a1117;--ink-fg:#e6ebf0;--shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.25)}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}[hidden]{display:none!important}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Inter,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-underline-offset:2px}
main{max-width:1080px;margin:0 auto;padding:32px 20px 64px}
main.full{max-width:none;padding:0}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
h1{font-size:30px;line-height:1.2;letter-spacing:-.01em;margin:4px 0 12px;font-weight:700}
h2{font-size:21px;line-height:1.3;margin:32px 0 10px;font-weight:650;letter-spacing:-.005em}
h3{font-size:16px;margin:20px 0 6px;font-weight:650}
.muted{color:var(--muted)}.small{font-size:14px}.error{color:var(--error)}.error:empty{display:none}
/* 顶栏 */
.top{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.top-inner{max-width:1080px;margin:0 auto;padding:12px 20px;display:flex;justify-content:space-between;align-items:center;gap:16px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;letter-spacing:-.01em;text-decoration:none;color:var(--fg)}
.brand svg{width:28px;height:28px;flex:none}
.top nav{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.top nav a{color:var(--muted);text-decoration:none;padding:6px 10px;border-radius:8px;font-size:15px;font-weight:500}
.top nav a:hover{color:var(--fg);background:var(--soft)}
.top nav a.button{color:var(--accent-fg);background:var(--accent);margin-left:6px}
.top nav a.button:hover{filter:brightness(1.08)}
.top nav button{padding:6px 12px;font-size:14px;margin-left:4px}
/* 按钮和表单 */
.button,button{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--accent);color:var(--accent-fg);border:1px solid transparent;border-radius:10px;padding:10px 18px;font:inherit;font-weight:600;text-decoration:none;cursor:pointer;transition:filter .15s,background .15s}
.button:hover,button:hover{filter:brightness(1.08)}
.button.secondary,button.secondary{background:var(--card);color:var(--fg);border-color:var(--line)}
.button.secondary:hover,button.secondary:hover{background:var(--soft);filter:none}
.button.lg{padding:13px 22px;font-size:17px}
.wide{display:flex;width:100%}
button.small{padding:5px 11px;font-size:14px;border-radius:8px}
button.link{background:none;color:var(--muted);padding:5px 4px;border:0;text-decoration:underline}
button:disabled{opacity:.6;cursor:wait}button.danger{background:var(--error);color:#fff}
label{display:flex;flex-direction:column;gap:6px;font-weight:550;font-size:15px}
input,select,textarea{font:inherit;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--fg);transition:border-color .15s,box-shadow .15s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 22%,transparent)}
.check{flex-direction:row;align-items:flex-start;gap:10px;font-weight:400}.check input{margin-top:5px;padding:0}
fieldset{border:1px solid var(--line);border-radius:var(--radius);padding:12px 16px;background:var(--card)}legend{font-weight:650;padding:0 6px}
.stack{display:flex;flex-direction:column;gap:14px;margin:14px 0}
.inline{display:flex;gap:8px;flex-wrap:wrap}.inline input{flex:1 1 260px}
.narrow{max-width:440px;margin:24px auto;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:28px 28px 20px;box-shadow:var(--shadow)}
.narrow h1{font-size:26px}
.or{text-align:center;color:var(--muted);margin:10px 0}
/* 卡片 */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin:20px 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.card h3{margin:0 0 6px;font-size:17px}.card p{margin:0;color:var(--muted)}
.card.featured{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent),var(--shadow)}
.price{font-size:32px;font-weight:700;letter-spacing:-.02em;margin:8px 0 4px;color:var(--fg)}.price span{font-size:15px;color:var(--muted);font-weight:500}
.card .button,.card button{margin-top:14px}
.badge{display:inline-block;font-size:12px;font-weight:650;letter-spacing:.02em;color:var(--accent);background:color-mix(in srgb,var(--accent) 12%,transparent);border-radius:999px;padding:3px 10px}
.icon{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;background:color-mix(in srgb,var(--accent) 12%,transparent);color:var(--accent);margin-bottom:12px}
.icon svg{width:22px;height:22px}
/* 首页 */
.hero{padding:64px 0 48px;background:radial-gradient(1200px 400px at 85% -10%,color-mix(in srgb,var(--accent) 14%,transparent),transparent 70%),linear-gradient(180deg,var(--card),var(--bg))}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero h1{font-size:46px;line-height:1.08;letter-spacing:-.025em;margin:14px 0 18px}
.hero .lead{font-size:19px;color:var(--muted);max-width:560px;margin:0 0 24px}
.hero .ctas{display:flex;gap:12px;flex-wrap:wrap}
.ticks{list-style:none;padding:0;margin:22px 0 0;display:flex;flex-wrap:wrap;gap:8px 20px;color:var(--muted);font-size:14px}
.ticks li::before{content:"✓";color:var(--accent-2);font-weight:700;margin-right:6px}
.preview{background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:0 30px 60px -20px rgba(16,32,48,.25),var(--shadow);overflow:hidden}
.preview-bar{display:flex;gap:6px;padding:10px 14px;border-bottom:1px solid var(--line);background:var(--soft)}
.preview-bar i{width:10px;height:10px;border-radius:50%;background:var(--line)}
.preview-body{padding:16px 18px 18px}
.preview svg{width:100%;height:auto;display:block}
.section{padding:72px 0}.section.alt{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.eyebrow{font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);margin:0}
.section h2{font-size:32px;line-height:1.2;letter-spacing:-.02em;margin:8px 0 12px}
.section .sub{font-size:18px;color:var(--muted);max-width:640px;margin:0}
.steps3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:32px;counter-reset:s}
.steps3 .card{position:relative;padding-top:52px}
.steps3 .card::before{counter-increment:s;content:counter(s);position:absolute;top:18px;left:20px;width:26px;height:26px;border-radius:50%;background:var(--accent);color:var(--accent-fg);font-weight:700;font-size:14px;display:grid;place-items:center}
.band{background:var(--ink);color:var(--ink-fg);border-radius:20px;padding:44px;display:grid;grid-template-columns:1fr 1fr;gap:36px}
.band h2{color:#fff;margin-top:6px}.band .eyebrow{color:#8fc7f0}.band p{color:#b7c4d1}
.band ul{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.band li{padding-left:28px;position:relative;color:#d6dee6}.band li::before{content:"";position:absolute;left:0;top:7px;width:14px;height:14px;border-radius:4px;background:#2c8a74}
.cta-band{text-align:center;padding:56px 20px}
.cta-band h2{font-size:30px;margin:0 0 10px}
.not-list{display:grid;grid-template-columns:repeat(2,1fr);gap:10px 28px;padding:0;list-style:none;margin:20px 0 0}
.not-list li{padding-left:24px;position:relative;color:var(--muted)}.not-list li::before{content:"—";position:absolute;left:0;color:var(--line)}
/* 页脚 */
.foot{border-top:1px solid var(--line);background:var(--card);color:var(--muted);font-size:13px}
.foot-inner{max-width:1080px;margin:0 auto;padding:28px 20px}
.foot-links{display:flex;flex-wrap:wrap;gap:6px 20px;margin-bottom:12px}.foot-links a{color:var(--muted);text-decoration:none}.foot-links a:hover{color:var(--fg)}
/* 文章 */
.prose{max-width:740px}.prose h2{margin-top:32px}.prose li{margin:6px 0}.prose p,.prose li{color:color-mix(in srgb,var(--fg) 88%,var(--muted))}
.steps{padding-left:20px}.steps h2{font-size:18px;margin:22px 0 4px}.cta{margin-top:32px}
/* 应用内 */
.row{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.pill{border:1px solid var(--line);background:var(--card);border-radius:999px;padding:5px 14px;font-size:14px;margin:0;font-weight:550}
.list{list-style:none;padding:0;margin:16px 0;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.list:empty{display:none}
.list li{display:flex;justify-content:space-between;gap:12px;padding:14px 18px;border-bottom:1px solid var(--line);flex-wrap:wrap;align-items:center}
.list li:last-child{border-bottom:0}.list li a{font-weight:600;text-decoration:none}.list li a:hover{text-decoration:underline}
.upload{display:flex;flex-direction:column;gap:12px;padding:20px;border:1.5px dashed color-mix(in srgb,var(--accent) 40%,var(--line));border-radius:var(--radius);background:color-mix(in srgb,var(--accent) 4%,var(--card))}
.doc{flex-direction:column;align-items:stretch!important}.doc-head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;width:100%}
.actions{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.chip{font-size:12.5px;font-weight:600;border-radius:999px;padding:3px 10px;border:1px solid var(--line);background:var(--soft)}
.chip.reviewed{border-color:transparent;color:#1d6b3a;background:#e3f3e8}.chip.needs_review{border-color:transparent;color:#8a3d18;background:#fbeadf}.chip.rejected{color:var(--muted)}
@media (prefers-color-scheme:dark){.chip.reviewed{background:#173326;color:#7fd3a0}.chip.needs_review{background:#3a2216;color:#f0b28c}}
.review-box{width:100%;margin-top:10px}.scroll{overflow-x:auto;max-width:100%}
table{border-collapse:collapse;width:100%;font-size:14.5px}th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}
thead th{font-size:12.5px;color:var(--muted);font-weight:650;text-transform:uppercase;letter-spacing:.03em;background:var(--soft)}
tbody th{font-weight:550}tbody tr:hover{background:color-mix(in srgb,var(--soft) 60%,transparent)}
table.compare,table.review{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;border-collapse:separate;border-spacing:0}
table.compare td,table.compare thead th{text-align:right;white-space:nowrap;font-variant-numeric:tabular-nums}table.compare thead th:first-child{text-align:left}
tr.flag{background:color-mix(in srgb,var(--warn) 9%,transparent)}a.src{font-size:12px;margin-left:4px;color:var(--muted)}
.controls{display:flex;gap:10px;flex-wrap:wrap;margin:12px 0}
.segmented{display:inline-flex;background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:3px;gap:2px}
.segmented button{background:transparent;color:var(--muted);border:0;border-radius:8px;padding:6px 12px;font-weight:550;font-size:14px}
.segmented button.on{background:var(--card);color:var(--fg);box-shadow:0 1px 2px rgba(16,32,48,.12)}
.slider{flex-direction:row;align-items:center;gap:12px;margin:10px 0;font-variant-numeric:tabular-nums}.slider input{flex:1;padding:0;accent-color:var(--accent)}
.chart{width:100%;height:auto;margin:8px 0;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:8px}
.chart .grid{stroke:var(--line)}.chart .tick{fill:var(--muted);font-size:11px}.chart .cursor{stroke:var(--muted);stroke-dasharray:4 3}
.legend{display:flex;gap:16px;flex-wrap:wrap;font-size:14px;color:var(--muted)}.swatch{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:6px}
.notice{border:1px solid color-mix(in srgb,var(--warn) 35%,var(--line));border-left:4px solid var(--warn);border-radius:10px;padding:10px 14px;background:color-mix(in srgb,var(--warn) 6%,var(--card));margin:10px 0}
.hint{display:block;font-weight:400;color:var(--warn);font-size:13px}
.report-form{max-width:620px}
main > section > h2{padding-top:8px}
@media (max-width:860px){.hero-grid,.band{grid-template-columns:1fr}.steps3{grid-template-columns:1fr}.hero h1{font-size:36px}.not-list{grid-template-columns:1fr}.section{padding:52px 0}.band{padding:28px}}
@media (max-width:640px){.top-inner{flex-wrap:wrap}.top nav a{padding:6px 8px;font-size:14px}h1{font-size:26px}.hero{padding:36px 0 28px}.hero h1{font-size:31px}.hero .lead{font-size:17px}.narrow{padding:22px 18px;margin:8px auto}.section h2{font-size:26px}}