/* ═══════════ 设计令牌（对齐 pay 站 index.html :root） ═══════════ */
@font-face{
  font-family:"alimama";
  src:url("../font/alimama-core.woff2?v=20260926c") format("woff2");
  font-weight:400 700;
  font-display:swap;
  unicode-range:U+0020-007E, U+00A0-00B7, U+00D7, U+00F7, U+2014-2026, U+2190, U+3001-3015, U+3220-3229, U+4E00-4FF1, U+500C-5026, U+503A-5065, U+5076-508D, U+50A3-50BB, U+50CF-50F5, U+510B, U+513F-5272, U+5288, U+529B-52E4, U+52FA-5305, U+5316-53A9, U+53BB-5510, U+5524-554A, U+5561-559D, U+55B7-55E8, U+55FD-563B, U+5668-566A, U+567C, U+568F, U+56B7-5708, U+571F-57AE, U+57C2-57E0, U+57F9-5807, U+5824-5835, U+584C-586C, U+5883-58A8, U+58C1, U+58E4-59A8, U+59B9-5A07, U+5A18-5A46, U+5A5A-5A62, U+5A74-5A7F, U+5A92-5A9A, U+5AB2-5ACC, U+5AE6-5AE9, U+5B32, U+5B50-5CB8, U+5CE1-5D4C, U+5D69, U+5DCD-5EB8, U+5EC9-5ED3, U+5EF6-5F3C, U+5F52-602A, U+603B-6127, U+613F-6177, U+618E, U+61A8-61A9, U+61C2-61D2, U+6208-63B7, U+63C9-64E6, U+6500, U+6512, U+6525-6697, U+66A8-66B4, U+66DD, U+66F0-6912, U+6930-6942, U+695A-6960, U+6977-69BB, U+69CC-69DF, U+69FD, U+6A1F-6A31, U+6A44, U+6A58-6A61, U+6A80-6A90, U+6AA9-6AAC, U+6B20-6B4C, U+6B62-6B6A, U+6B7B-6BA1, U+6BB4-6BEF, U+6C0F-6E38, U+6E56-6E5B, U+6E7E-6FA1, U+6FB3-6FC0, U+6FD2-6FEE, U+7011, U+704C, U+706B-7096, U+70AB-7136, U+714C-71E7, U+7206, U+722A-728F, U+72AC-72FC, U+730E-733F, U+7350-7357, U+736C-736D, U+7384-73ED, U+7403-7410, U+7422-743C, U+7455-745E, U+7470-7487, U+74A7-74A8, U+74DC-7600, U+761F-764C, U+7663-7693, U+76AE-770B, U+771F-7729, U+773A-7741, U+775B-776B, U+778E, U+77A7-77BB, U+77DB-78D5, U+78E8-78FA, U+7934-798F, U+79A7, U+79BB-7A20, U+7A33-7A46, U+7A57, U+7A74-7AA8, U+7ACB-7B60, U+7B77-7BB1, U+7BC6-7C07, U+7C27, U+7C38-7C4D, U+7C73-7CFB, U+7D20-7D2F, U+7D6E, U+7DA6, U+7E41, U+7E82, U+7EA0-7F72, U+7F8A-7FE1, U+7FFB-806A, U+8083-811A, U+812F-81B3, U+81C6, U+81EA-8247, U+8258, U+826E-8428, U+843D, U+8457-849C, U+84B2-84EC, U+8513-85E4, U+85FB-85FF, U+8611, U+8638, U+864E-8729, U+873F-8760, U+8774-878D, U+87A8-87D1, U+87E5, U+87F9-87FE, U+8840-88AD, U+88C1-88F9, U+8910, U+8925-8944, U+895F, U+897F-8986, U+89C1-89E6, U+8A00, U+8A89, U+8B66-8B6C, U+8BA0-8C4C, U+8C61-8C8C, U+8D1D-8D8B, U+8D9F-8DFA, U+8E0F, U+8E22-8E2A, U+8E44-8E4B, U+8E66-8E81, U+8EAB-8EBA, U+8F66-9022, U+9038-9102, U+9146-91AE, U+91C7-91DC, U+9274, U+933E, U+938F, U+946B, U+9486-957F, U+95E8-96D5, U+96E8-971E, U+9732-9739, U+9752-9774, U+978B-978D, U+97A0-97AD, U+97E6-97F6, U+9875-98A0, U+98CE-98DF, U+9910, U+9955-99A8, U+9A6C-9AB0, U+9AD3-9AD8, U+9B03, U+9B3C-9B54, U+9C7C-9CE2, U+9E1F-9E51, U+9E64-9EA6, U+9EB8-9EDD, U+9F0E-9F20, U+9F3B, U+9F50, U+9F7F-9F84, U+9F99-9F9F, U+FF01-FF1F, U+FF3B-FF3D, U+FF5C-FF5E, U+FFE5;
}
:root{
  --brand:#3a78ee;
  --brand-dark:#2b5fcc;
  --brand-light:#5b96f4;
  --brand-bg:#e8f0ff;
  --brand-bg2:#f2f7ff;
  --brand-grad:linear-gradient(135deg,#3a78ee 0%,#5b96f4 100%);
  --link:#3377ff;
  --ink:#1a1a2e;
  --t2:#333;
  --t3:#666;
  --t4:#999;
  --success:#2bb673;
  --success-bg:#eaf9f2;
  --warn:#f5a623;
  --warn-bg:#fff8e6;
  --hot:#e63946;
  --bg:#f6f7fa;
  --card:#fff;
  --line:#ececec;
  --r-tag:6px;
  --r-card:12px;
  --r-pop:16px;
  --r-pill:22px;
  --shadow:0 2px 8px rgba(0,0,0,.04);
  --shadow-md:0 6px 24px rgba(0,0,0,.06);
  --font:"alimama","alimama-full","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Open Sans",Arial,sans-serif;
  --w:1120px;
}
/* ═══════════ 深色模式（html.dark，同 pay 站） ═══════════ */
html.dark{
  --brand:#5b96f4; --brand-dark:#2b5fcc; --brand-light:#7facf7;
  --brand-bg:#1a2a4a; --brand-bg2:#152238;
  --brand-grad:linear-gradient(135deg,#1e3c78 0%,#2e63c4 100%);
  --link:#6ea3ff;
  --ink:#e8ecf5; --t2:#c3cbd9; --t3:#98a4ba; --t4:#6d7994;
  --success:#3ecf8e; --success-bg:#12291c;
  --warn:#f7b84b; --warn-bg:#2e2614;
  --hot:#ff7b81;
  --bg:#0d1320; --card:#151d2e; --line:#24304a;
  --shadow:0 2px 8px rgba(0,0,0,.35);
  --shadow-md:0 6px 24px rgba(0,0,0,.45);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);font-size:15px;line-height:1.65;color:var(--ink);background:var(--bg)}
html.dark body{background:var(--bg)}
a{color:var(--link);text-decoration:none}
img,svg{display:block}
.wrap{max-width:var(--w);margin:0 auto;padding:0 20px}
.ic{width:1em;height:1em;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* ═══════════ 顶栏 ═══════════ */
.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
html.dark .topbar{background:rgba(13,19,32,.92)}
.topbar-in{max-width:var(--w);margin:0 auto;padding:0 20px;height:58px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;color:var(--ink)}
.brand small{font-size:11px;color:#fff;background:var(--brand);border-radius:var(--r-tag);padding:2px 7px;font-weight:500;margin-left:2px}
.brand-mark{width:32px;height:32px;border-radius:9px;background:var(--brand-grad);display:flex;align-items:center;justify-content:center;color:#fff;flex:none}
.brand-mark .ic{width:17px;height:17px}
.nav{display:flex;gap:2px;margin-left:auto}
.nav a{color:var(--t3);font-size:14px;padding:8px 14px;border-radius:var(--r-pill);transition:.18s}
.nav a:hover{color:var(--brand);background:var(--brand-bg2)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 20px;border-radius:var(--r-pill);font-size:14px;font-weight:600;transition:.18s;cursor:pointer;border:1px solid transparent;font-family:inherit}
.btn-grad{background:var(--brand-grad);color:#fff;box-shadow:0 4px 14px rgba(58,120,238,.32)}
.btn-grad:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-ghost{background:var(--card);color:var(--t2);border:1px solid var(--line)}
.btn-ghost:hover{background:var(--brand-bg2);color:var(--brand);border-color:var(--brand-bg)}
.btn-lg{padding:12px 26px;font-size:15px}
.btn[disabled]{opacity:.5;pointer-events:none}
.dark-btn{margin-left:6px;background:none;border:none;cursor:pointer;color:var(--t3);width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:.18s}
.dark-btn:hover{background:var(--brand-bg2);color:var(--brand)}
.menu-btn{display:none;background:none;border:none;color:var(--t2);cursor:pointer;padding:6px}
.menu-btn .ic{width:22px;height:22px}
.m-nav{display:none;flex-direction:column;background:var(--card);border-bottom:1px solid var(--line)}
.m-nav a{padding:13px 22px;border-bottom:1px solid var(--line);color:var(--t2);font-size:14px}
.m-nav.open{display:flex}

/* ═══════════ Hero ═══════════ */
.hero{position:relative;overflow:hidden;background:var(--brand-grad);color:#fff}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 85% 15%,rgba(255,255,255,.18),transparent 60%),radial-gradient(500px 280px at 10% 90%,rgba(255,255,255,.1),transparent 60%)}
.hero-in{position:relative;z-index:1;max-width:var(--w);margin:0 auto;padding:70px 20px 76px;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.4);border-radius:var(--r-pill);padding:6px 14px;font-size:13px;margin-bottom:20px}
.hero-kicker .dot{width:7px;height:7px;border-radius:50%;background:#7dffb8;box-shadow:0 0 8px #7dffb8}
.hero h1{font-size:44px;line-height:1.2;letter-spacing:-.5px;margin-bottom:16px}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,#ffe27a,#ffc65c);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:16px;opacity:.92;max-width:560px;margin-bottom:26px}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:22px}
.hero .btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.45)}
.hero .btn-ghost:hover{background:rgba(255,255,255,.22)}
.hero-tags{display:flex;gap:8px;flex-wrap:wrap}
.hero-tags span{font-size:12px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);padding:4px 12px;border-radius:var(--r-pill);opacity:.95}
.demo{display:flex;justify-content:center}
.demo-phone{width:330px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.3);border-radius:var(--r-pop);padding:18px;backdrop-filter:blur(6px);box-shadow:0 16px 40px rgba(10,40,100,.25)}
.demo-head{display:flex;align-items:center;gap:9px;font-size:14px;font-weight:600;margin-bottom:14px}
.demo-head .ring{width:30px;height:30px;border-radius:50%;background:rgba(255,255,255,.2);display:flex;align-items:center;justify-content:center;flex:none}
.demo-row{display:flex;justify-content:space-between;align-items:center;padding:9px 2px;border-bottom:1px dashed rgba(255,255,255,.25);font-size:13px}
.demo-row .k{opacity:.85}
.demo-row .v{font-weight:600}
.demo-toast{display:flex;align-items:center;gap:10px;background:#fff;color:var(--ink);border-radius:var(--r-card);padding:12px 14px;margin-top:14px;box-shadow:var(--shadow-md)}
.demo-toast .ok{width:30px;height:30px;border-radius:50%;background:var(--success-bg);color:var(--success);display:flex;align-items:center;justify-content:center;flex:none}
.demo-toast b{font-size:14px;display:block}
.demo-toast small{color:var(--t4);font-size:12px}
.demo-toast .amt{margin-left:auto;font-weight:800;color:var(--success);font-size:17px}

/* ═══════════ 数据条 ═══════════ */
.stats{background:var(--card);border-bottom:1px solid var(--line)}
.stats-in{max-width:var(--w);margin:0 auto;padding:26px 20px;display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat b{font-size:26px;color:var(--brand);letter-spacing:-.5px}
.stat b i{font-style:normal;font-size:14px;margin-left:2px;color:var(--t4)}
.stat span{display:block;color:var(--t3);font-size:13px;margin-top:2px}

/* ═══════════ 通用节区 ═══════════ */
section{padding:72px 0}
section.alt{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{text-align:center;max-width:640px;margin:0 auto 42px}
.eyebrow{display:inline-block;color:var(--brand);background:var(--brand-bg);border-radius:var(--r-pill);font-size:13px;font-weight:600;padding:5px 16px;margin-bottom:14px}
.sec-head h2,.tool-head h2{font-size:30px;letter-spacing:-.4px;margin-bottom:10px}
.sec-head p{color:var(--t3)}

/* ═══════════ 工具区 ═══════════ */
.tool-head{text-align:center;max-width:640px;margin:0 auto 30px}
.tool-head p{color:var(--t3)}
.tool-bar{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-bottom:18px}
.tb-group{display:flex;align-items:center;gap:10px}
.tb-label{font-size:13px;color:var(--t3);font-weight:600}
.seg{display:inline-flex;background:var(--card);border:1px solid var(--line);border-radius:var(--r-pill);padding:3px;box-shadow:var(--shadow)}
.seg-btn{border:none;background:none;font-family:inherit;font-size:13px;font-weight:600;color:var(--t3);padding:6px 16px;border-radius:var(--r-pill);cursor:pointer;transition:.15s}
.seg-btn:hover{color:var(--brand)}
.seg-btn.active{background:var(--brand-grad);color:#fff;box-shadow:0 2px 8px rgba(58,120,238,.3)}
.tb-btn{margin-left:auto}
.tool-bar .tb-btn + .tb-btn{margin-left:0}

.dropzone{background:var(--card);border:2px dashed var(--line);border-radius:var(--r-pop);padding:52px 24px;text-align:center;cursor:pointer;transition:.18s;outline:none}
.dropzone:hover,.dropzone:focus{border-color:var(--brand-light);background:var(--brand-bg2)}
.dropzone.over{border-color:var(--brand);background:var(--brand-bg);transform:scale(1.005)}
.dz-ico{width:58px;height:58px;margin:0 auto 14px;border-radius:16px;background:var(--brand-grad);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 20px rgba(58,120,238,.3)}
.dz-ico svg{width:28px;height:28px}
.dropzone b{display:block;font-size:16px;margin-bottom:6px}
.dropzone span{color:var(--t4);font-size:13px}

.queue{display:flex;flex-direction:column;gap:10px;margin-top:18px}
.q-item{display:flex;align-items:center;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:10px 14px;box-shadow:var(--shadow);transition:.18s}
.q-item:hover{border-color:var(--brand-bg)}
.q-thumb{width:52px;height:52px;border-radius:10px;background:var(--brand-bg2);flex:none;display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative}
.q-thumb img{width:100%;height:100%;object-fit:cover}
.q-thumb::after{content:"";position:absolute;inset:0;background:conic-gradient(#eee 0 25%,#fff 0 50%,#eee 0 75%,#fff 0);background-size:12px 12px;z-index:-1}
.q-info{flex:1;min-width:0}
.q-name{font-weight:600;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.q-sub{display:flex;gap:8px;align-items:center;font-size:12px;color:var(--t4);margin-top:2px;flex-wrap:wrap}
.q-fmt{background:var(--brand-bg);color:var(--brand);border-radius:var(--r-tag);padding:1px 7px;font-weight:600;font-size:11px}
.q-status{font-size:12px;color:var(--t4);flex:none;display:flex;align-items:center;gap:8px}
.q-status .save{color:var(--success);font-weight:700;font-size:13px}
.q-size{font-size:13px;color:var(--t3);flex:none;font-variant-numeric:tabular-nums}
.q-size .new{color:var(--ink);font-weight:700}
.q-size .old{text-decoration:line-through;color:var(--t4);font-size:12px;margin-right:6px}
.q-acts{display:flex;gap:6px;flex:none}
.q-btn{border:1px solid var(--line);background:var(--card);color:var(--t2);border-radius:var(--r-pill);padding:6px 13px;font-size:12px;font-weight:600;cursor:pointer;font-family:inherit;transition:.15s;display:inline-flex;align-items:center;gap:5px}
.q-btn:hover{color:var(--brand);border-color:var(--brand-bg);background:var(--brand-bg2)}
.q-btn.primary{background:var(--brand-grad);color:#fff;border-color:transparent}
.q-btn.primary:hover{filter:brightness(1.06)}
.q-btn.x{padding:6px 8px}
.spin{width:14px;height:14px;border:2px solid var(--brand-bg);border-top-color:var(--brand);border-radius:50%;animation:sp .7s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.q-item.err{border-color:var(--hot)}
.q-status .errmsg{color:var(--hot)}
.queue-sum{margin-top:16px;background:var(--success-bg);border:1px solid transparent;border-radius:var(--r-card);padding:14px 18px;color:var(--success);font-weight:600;font-size:14px;display:flex;gap:18px;flex-wrap:wrap;align-items:center}
.queue-sum b{font-size:16px}

/* ═══════════ 特性 ═══════════ */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feat{background:var(--bg);border:1px solid var(--line);border-radius:var(--r-card);padding:26px 22px;transition:.18s;display:flex;flex-wrap:wrap;align-items:center;column-gap:14px}
html.dark .feat{background:var(--card)}
.feat:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--brand-bg)}
.feat b{flex:1;font-size:16px;margin:0}
.feat p{flex-basis:100%;color:var(--t3);font-size:13.5px;margin-top:10px}
.fi{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center}
.fi .ic{width:22px;height:22px}
.fi-blue{background:var(--brand-bg);color:var(--brand)}
.fi-purple{background:#f0ebff;color:#7c5cf0}
.fi-teal{background:#e6f7f4;color:#14b8a6}
.fi-orange{background:#fff3e6;color:#f08c2e}
.fi-green{background:var(--success-bg);color:var(--success)}
.fi-red{background:#fdeaec;color:var(--hot)}

/* ═══════════ 流程 ═══════════ */
.flow-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.flow-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:26px 22px;box-shadow:var(--shadow);display:flex;flex-wrap:wrap;align-items:center;column-gap:12px}
.flow-ico{width:38px;height:38px;border-radius:50%;background:var(--brand-grad);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;flex:none}
.flow-card b{flex:1;font-size:16px;margin:0}
.flow-card p{flex-basis:100%;color:var(--t3);font-size:13.5px;margin-top:10px}
.tag{display:inline-block;background:var(--brand-bg);color:var(--brand);font-size:11px;font-weight:600;border-radius:var(--r-tag);padding:2px 8px;margin-left:8px;vertical-align:2px}

/* ═══════════ FAQ（左分类导航 + 右问答手风琴） ═══════════ */
.faq-shell{display:grid;grid-template-columns:216px minmax(0,1fr);gap:52px;align-items:start}
.faq-side{display:flex;flex-direction:column;gap:4px;position:sticky;top:82px}
.fs-btn{background:none;border:0;font-family:inherit;font-size:15px;color:var(--t3);text-align:left;padding:12px 18px;border-radius:10px;cursor:pointer;transition:.18s;line-height:1.45}
.fs-btn:hover{background:var(--brand-bg2);color:var(--brand)}
.fs-btn.is-on{background:var(--brand-grad);color:#fff;font-weight:600;box-shadow:0 6px 16px rgba(58,120,238,.28)}
.faq-main{min-width:0}
.fq-search{position:relative;margin-bottom:30px}
.fq-search .ic{position:absolute;left:16px;top:50%;transform:translateY(-50%);width:17px;height:17px;color:var(--t4);pointer-events:none}
.fq-search input{width:100%;height:46px;border:1px solid var(--line);background:var(--card);border-radius:var(--r-pill);padding:0 46px 0 44px;font-family:inherit;font-size:14px;color:var(--ink);outline:none;transition:.18s}
.fq-search input::placeholder{color:var(--t4)}
.fq-search input:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-bg)}
.fq-search input::-webkit-search-cancel-button{-webkit-appearance:none;appearance:none}
.fq-clear{position:absolute;right:9px;top:50%;transform:translateY(-50%);width:30px;height:30px;border:0;border-radius:50%;background:none;color:var(--t4);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:.15s}
.fq-clear[hidden]{display:none}
.fq-clear:hover{background:var(--brand-bg);color:var(--brand)}
.fq-clear .ic{width:15px;height:15px}
.fq-panel{display:none}
.fq-panel.is-on{display:block}
.fq-title{font-size:26px;font-weight:700;letter-spacing:.5px}
.fq-sub{color:var(--t4);font-size:13px;margin-top:6px}
.fq-list{border-top:1px solid var(--line);margin-top:16px}
.fq{border-bottom:1px solid var(--line)}
.fq[hidden]{display:none}
.fq-q{display:flex;align-items:center;gap:16px;width:100%;background:none;border:0;font-family:inherit;font-size:15.5px;font-weight:600;color:var(--ink);text-align:left;padding:19px 0;cursor:pointer;transition:color .15s}
.fq-q>span{flex:1;min-width:0}
.fq-q:hover{color:var(--brand)}
.fq-tg{position:relative;width:26px;height:26px;border-radius:8px;background:var(--brand-bg);flex:none;transition:background .2s}
html.dark .fq-tg{background:rgba(91,150,244,.16)}
.fq-tg::before,.fq-tg::after{content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;transition:.22s}
.fq-tg::before{width:12px;height:2px;transform:translate(-50%,-50%)}
.fq-tg::after{width:2px;height:12px;transform:translate(-50%,-50%)}
.fq-q:hover .fq-tg,.fq.on .fq-tg{background:var(--brand)}
.fq-q:hover .fq-tg::before,.fq-q:hover .fq-tg::after,.fq.on .fq-tg::before,.fq.on .fq-tg::after{background:#fff}
.fq.on .fq-tg::after{opacity:0;transform:translate(-50%,-50%) scaleY(.2)}
.fq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s ease}
.fq.on .fq-a{grid-template-rows:1fr}
.fq-a-in{overflow:hidden;min-height:0}
.fq-a p{color:var(--t3);font-size:14px;line-height:1.9;margin-bottom:20px}
.fq-a b{color:var(--t2)}
.fq-empty{display:none;padding:36px 0;color:var(--t4);font-size:14px}
.fq-empty.is-on{display:block}
.fq-empty a{color:var(--brand);font-weight:600}

/* ═══════════ 工具说明（SEO 正文块） ═══════════ */
.seo-block{padding:64px 0}
.seo-block h2{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;margin-bottom:12px}
.seo-block .em-ico{width:34px;height:34px;border-radius:10px;background:var(--brand-bg);
  color:var(--brand);display:flex;align-items:center;justify-content:center;flex:none}
.seo-block .em-ico .ic{width:18px;height:18px;stroke-width:1.9}
.seo-block .seo-p{color:var(--t3);font-size:13.5px;line-height:1.9;margin-bottom:22px}
.seo-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.seo-item{background:var(--bg);border:1px solid var(--line);border-radius:var(--r-card);padding:16px 16px}
.seo-item b{display:flex;align-items:center;gap:7px;font-size:14px;font-weight:700;margin-bottom:7px}
.seo-item b .ic{width:16px;height:16px;color:var(--brand);flex:none}
.seo-item p{color:var(--t3);font-size:12.5px;line-height:1.8}
@media (max-width:900px){
  .seo-block{padding:48px 0}
  .seo-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:560px){
  .seo-grid{grid-template-columns:1fr}
}

/* ═══════════ 底部 ═══════════ */
.foot{background:#101625;color:#93a0b5;padding:34px 0;font-size:13px}
.foot-in{max-width:var(--w);margin:0 auto;padding:0 20px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.foot .fb{display:flex;align-items:center;gap:9px;color:#fff;font-weight:700;font-size:14px}
.foot .fb .brand-mark{width:26px;height:26px;border-radius:7px}
.foot-links{margin-left:auto;display:flex;gap:20px;flex-wrap:wrap}
.foot-links a{color:#93a0b5}
.foot-links a:hover{color:#fff}
.foot-copy{width:100%;border-top:1px solid rgba(255,255,255,.08);padding-top:18px;color:#5d6a80;font-size:12.5px}
.foot-copy a{color:#7c89a0}
.foot-copy a:hover{color:#fff}
.foot-ext{display:none}
@media(min-width:681px){.foot-ext{display:inline}}

/* ═══════════ 对比弹层 ═══════════ */
.cmp-mask{position:fixed;inset:0;z-index:100;background:rgba(10,16,30,.66);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;padding:20px}
.cmp-mask[hidden]{display:none}
.cmp-box{background:var(--card);border-radius:var(--r-pop);max-width:min(920px,94vw);width:100%;max-height:92vh;display:flex;flex-direction:column;box-shadow:var(--shadow-md);overflow:hidden}
.cmp-head{display:flex;align-items:center;gap:12px;padding:14px 18px;border-bottom:1px solid var(--line)}
.cmp-head b{font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cmp-meta{color:var(--t4);font-size:12.5px;margin-left:auto;white-space:nowrap}
.cmp-close{background:none;border:none;color:var(--t3);cursor:pointer;padding:6px;border-radius:50%;display:flex}
.cmp-close:hover{background:var(--brand-bg2);color:var(--hot)}
.cmp-view{position:relative;overflow:auto;background:repeating-conic-gradient(#f1f2f5 0 25%,#fff 0 50%) 0 0/20px 20px;user-select:none;-webkit-user-select:none}
html.dark .cmp-view{background:repeating-conic-gradient(#1b2436 0 25%,#141c2c 0 50%) 0 0/20px 20px}
.cmp-img{display:block;width:100%;height:auto;pointer-events:none}
.cmp-half{position:absolute;inset:0;width:50%;overflow:hidden}
.cmp-half .cmp-img{position:absolute;top:0;left:0;width:auto;height:auto;max-width:none}
.cmp-line{position:absolute;top:0;bottom:0;left:50%;width:2px;background:#fff;box-shadow:0 0 0 1px rgba(0,0,0,.18),0 0 10px rgba(0,0,0,.25);cursor:ew-resize;display:flex;align-items:center;justify-content:center}
.cmp-handle{width:38px;height:38px;border-radius:50%;background:#fff;color:var(--brand);display:flex;align-items:center;justify-content:center;box-shadow:0 3px 12px rgba(0,0,0,.3);flex:none}
.cmp-handle svg{width:20px;height:20px}
.cmp-tag{position:absolute;top:12px;background:rgba(10,16,30,.55);color:#fff;font-size:12px;padding:3px 11px;border-radius:var(--r-pill);backdrop-filter:blur(4px)}
.cmp-tag-l{left:12px}
.cmp-tag-r{right:12px}

/* ═══════════ 入场动画 ═══════════ */
.rv{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease}
.rv.in{opacity:1;transform:none}

/* ═══════════ 响应式 ═══════════ */
@media(max-width:960px){
  .hero-in{grid-template-columns:1fr;gap:36px;padding:52px 20px 60px}
  .hero h1{font-size:34px}
  .feat-grid,.flow-row{grid-template-columns:1fr 1fr}
  .stats-in{grid-template-columns:1fr 1fr;gap:14px}
}
@media(max-width:880px){
  .faq-shell{grid-template-columns:minmax(0,1fr);gap:22px}
  .faq-side{flex-direction:row;gap:8px;position:static;overflow-x:auto;padding:2px 0 6px;scrollbar-width:none}
  .faq-side::-webkit-scrollbar{display:none}
  .fs-btn{white-space:nowrap;background:var(--card);border:1px solid var(--line);padding:9px 16px;border-radius:var(--r-pill);font-size:14px}
  .fs-btn.is-on{background:var(--brand-grad);border-color:transparent}
  .fq-title{font-size:22px}
  .fq-q{font-size:15px;gap:12px;padding:17px 0}
  .fq-tg{width:24px;height:24px}
}
@media(max-width:680px){
  .nav,.top-cta{display:none}
  /* 窄屏顶栏：品牌名不换行、不撑破 58px 顶栏（原状：390px 折两行、320px 溢出 79px） */
  .topbar-in{gap:10px}
  .brand{font-size:14.5px;gap:8px;flex:1 1 auto;min-width:0}
  .brand-txt{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .brand small{display:none}
  .brand-mark{width:28px;height:28px;border-radius:8px}
  .dark-btn,.menu-btn{flex:none}
  .fq-search{margin-bottom:22px}
  .fq-search input{height:44px;font-size:13.5px}
  .menu-btn{display:block}
  .feat-grid,.flow-row{grid-template-columns:1fr}
  .hero h1{font-size:29px}
  .lead{font-size:14.5px}
  .tool-bar{gap:10px}
  .tb-btn{margin-left:0;width:100%}
  .q-item{flex-wrap:wrap}
  .q-status{order:5;width:100%;justify-content:flex-end}
  .cmp-meta{display:none}
  section{padding:52px 0}
}