/* ===== SPWorker 共享设计系统 ===== */
:root{
  --blue-900:#061634;
  --blue-800:#0a2350;
  --blue-700:#10357e;
  --blue-600:#1a4fb0;
  --blue-500:#2f6bff;
  --blue-400:#5b8bff;
  --silver-50:#f7f9fc;
  --silver-100:#f1f4f9;
  --silver-200:#e6ebf3;
  --silver-300:#d3dceb;
  --orange:#ff6a13;
  --orange-600:#e8580a;
  --orange-soft:#fff1e8;
  --ink:#15203a;
  --muted:#5b6b86;
  --line:#e3e9f2;
  --white:#ffffff;
  --radius:18px;
  --radius-sm:12px;
  --shadow-sm:0 6px 18px rgba(10,35,80,.07);
  --shadow:0 16px 44px rgba(10,35,80,.12);
  --shadow-blue:0 20px 60px rgba(26,79,176,.30);
  --maxw:1200px;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--white);line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:15px;padding:13px 26px;border-radius:999px;cursor:pointer;border:1px solid transparent;transition:.25s ease;white-space:nowrap}
.btn-orange{background:linear-gradient(135deg,var(--orange),var(--orange-600));color:#fff;box-shadow:0 10px 26px rgba(255,106,19,.35)}
.btn-orange:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(255,106,19,.45)}
.btn-ghost{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.35);backdrop-filter:blur(4px)}
.btn-ghost:hover{background:rgba(255,255,255,.18)}
.btn-blue{background:var(--blue-600);color:#fff}
.btn-blue:hover{background:var(--blue-700);transform:translateY(-2px)}
.btn-line{background:#fff;color:var(--blue-700);border-color:var(--silver-300)}
.btn-line:hover{border-color:var(--blue-500);color:var(--blue-500)}
.btn-lg{padding:15px 34px;font-size:16px}
.section{padding:88px 0}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:1.5px;color:var(--blue-500);background:var(--silver-100);padding:6px 14px;border-radius:999px;margin-bottom:16px}
.sec-title{font-size:34px;font-weight:800;letter-spacing:-.5px;line-height:1.25}
.sec-sub{color:var(--muted);font-size:16px;margin-top:14px;max-width:680px}
.center{text-align:center}
.center .sec-sub{margin-left:auto;margin-right:auto}

/* ---------- NAV ---------- */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line);transition:.3s}
header.scrolled{box-shadow:var(--shadow-sm)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--blue-800)}
.logo .mark{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--blue-500),var(--blue-700));display:grid;place-items:center;color:#fff;font-size:15px;font-weight:900;box-shadow:var(--shadow-blue)}
.logo small{display:block;font-size:10px;font-weight:600;color:var(--muted);letter-spacing:1px}

/* SPWorker 新 Logo：方形品牌图标 + 字标 / 页脚完整锁up */
.logo-mark{width:34px;height:34px;border-radius:9px;display:block;box-shadow:var(--shadow-blue)}
.logo .wm{display:flex;flex-direction:column;line-height:1.12;font-weight:800;font-size:20px;color:var(--blue-800)}
.logo .wm-red{color:#e2231a}
.logo-lockup{height:48px;width:auto;display:block}
.foot-brand .logo-lockup{height:44px}
.menu{display:flex;align-items:center;gap:22px}
.menu a{font-size:14.5px;color:var(--ink);font-weight:500;position:relative;padding:6px 0}
.menu a:hover{color:var(--blue-600)}
.menu a.active{color:var(--blue-600)}
.menu a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--blue-500);border-radius:2px;transition:.25s}
.menu a:hover::after,.menu a.active::after{width:100%}
.nav-cta{display:flex;align-items:center;gap:12px}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.hamburger span{width:22px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}

/* ---------- SUB HERO (inner pages) ---------- */
.subhero{position:relative;background:radial-gradient(1000px 500px at 80% -10%,rgba(47,107,255,.30),transparent 60%),linear-gradient(160deg,var(--blue-900),var(--blue-700));color:#fff;overflow:hidden;padding:72px 0 80px}
.subhero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:46px 46px;mask-image:radial-gradient(circle at 50% 20%,#000,transparent 75%);opacity:.5}
.subhero .wrap{position:relative;z-index:2}
.subhero h1{font-size:42px;font-weight:800;letter-spacing:-1px;line-height:1.2}
.subhero h1 .hl{background:linear-gradient(120deg,#ffd2a8,var(--orange));-webkit-background-clip:text;background-clip:text;color:transparent}
.subhero p{font-size:18px;color:#cdd9f0;margin-top:18px;max-width:640px}
.subhero .crumbs{font-size:13px;color:#9fb2d6;margin-bottom:18px}
.subhero .crumbs a:hover{color:#fff}
.bread-link{color:#9fb2d6}

/* ---------- ARCH STACK (product overview) ---------- */
.arch-stack{display:flex;flex-direction:column;gap:0;max-width:820px;margin:0 auto}
.arch-layer{border-radius:16px;padding:24px 28px;color:#fff;position:relative;box-shadow:var(--shadow)}
.arch-layer+.arch-layer{margin-top:14px}
.arch-layer .lt{font-size:18px;font-weight:800;display:flex;align-items:center;gap:10px}
.arch-layer .ld{font-size:14px;color:rgba(255,255,255,.9);margin-top:8px}
.arch-layer .chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.arch-layer .chip{font-size:12.5px;background:rgba(255,255,255,.16);padding:5px 12px;border-radius:999px}
.al-app{background:linear-gradient(135deg,var(--blue-500),var(--blue-700))}
.al-engine{background:linear-gradient(135deg,#19c3a6,#0f7a66)}
.al-base{background:linear-gradient(135deg,var(--blue-800),var(--blue-900))}
.arch-conn{text-align:center;color:var(--blue-400);font-size:13px;padding:4px 0;font-weight:600}

/* ---------- FEATURE PANORAMA ---------- */
.feat-group{margin-top:34px}
.feat-group h3{font-size:20px;font-weight:800;margin-bottom:16px;display:flex;align-items:center;gap:10px}
.feat-group h3 .gico{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;color:#fff;font-size:18px}
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.feat-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;box-shadow:var(--shadow-sm);transition:.25s}
.feat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--silver-300)}
.feat-card .ft{font-size:15px;font-weight:700;margin-bottom:6px}
.feat-card .fd{font-size:13px;color:var(--muted)}

/* ---------- ADVANTAGE ---------- */
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:46px}
.adv-card{background:linear-gradient(180deg,#fff,#f6f9ff);border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow-sm);transition:.25s}
.adv-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.adv-card .ai{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;font-size:26px;color:#fff;margin-bottom:16px}
.adv-card h4{font-size:17px;font-weight:800;margin-bottom:8px}
.adv-card p{font-size:13.5px;color:var(--muted)}

/* ---------- TABS (agent detail) ---------- */
.tab-nav{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:30px}
.tab-btn{font-size:14.5px;font-weight:700;padding:11px 22px;border-radius:999px;border:1px solid var(--silver-300);background:#fff;color:var(--ink);cursor:pointer;transition:.25s;display:flex;align-items:center;gap:8px}
.tab-btn .ti{width:26px;height:26px;border-radius:8px;display:grid;place-items:center;color:#fff;font-size:14px}
.tab-btn:hover{border-color:var(--blue-500)}
.tab-btn.active{background:var(--blue-700);color:#fff;border-color:var(--blue-700)}
.tab-btn.active .ti{background:rgba(255,255,255,.22)}
.tab-panel{display:none;animation:fade .4s ease}
.tab-panel.active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.detail-head{display:flex;align-items:center;gap:16px;margin-bottom:26px}
.detail-head .dava{width:64px;height:64px;border-radius:16px;display:grid;place-items:center;font-size:32px;color:#fff;flex:none}
.detail-head h2{font-size:26px;font-weight:800}
.detail-head .dt{font-size:14px;color:var(--muted)}
.step-list{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.step{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden}
.step .snum{position:absolute;right:14px;top:8px;font-size:42px;font-weight:900;color:var(--silver-100);line-height:1}
.step h4{font-size:16px;font-weight:800;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.step h4 .dot{width:9px;height:9px;border-radius:50%;background:var(--blue-500)}
.step p{font-size:14px;color:var(--muted)}
.demo-box{margin-top:18px;background:linear-gradient(160deg,#0a2350,#10357e);border-radius:16px;padding:28px;color:#fff;display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.demo-box .dv{font-size:40px}
.demo-box .dtxt{flex:1;min-width:200px}
.demo-box .dtxt b{font-size:16px}
.demo-box .dtxt p{font-size:13.5px;color:#cdd9f0;margin-top:4px}
.scenario-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.scenario-tags span{font-size:13px;background:var(--silver-100);border:1px solid var(--line);padding:7px 14px;border-radius:999px;color:var(--blue-700);font-weight:600}

/* mini calculator reused on agent & pricing */
.calc{background:var(--silver-50);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.calc h3{font-size:19px;font-weight:800;margin-bottom:6px}
.calc .desc{font-size:14px;color:var(--muted);margin-bottom:18px}
.calc label{display:block;font-size:13px;color:var(--muted);margin:14px 0 8px;font-weight:600}
.calc input[type=range]{width:100%;accent-color:var(--orange)}
.calc .val{float:right;color:var(--orange-600);font-weight:800}
.calc-result{margin-top:22px;background:linear-gradient(135deg,#fff1e8,#ffe3d2);border:1px solid #ffd2b3;border-radius:14px;padding:20px;text-align:center}
.calc-result .big{font-size:38px;font-weight:900;color:var(--orange-600);line-height:1}
.calc-result .note{font-size:13px;color:var(--muted);margin-top:8px}

/* ---------- PRICING ---------- */
.mode-tabs{display:flex;gap:12px;justify-content:center;margin-bottom:36px}
.mode-btn{font-size:15px;font-weight:700;padding:12px 28px;border-radius:999px;border:1px solid var(--silver-300);background:#fff;color:var(--ink);cursor:pointer;transition:.25s}
.mode-btn.active{background:var(--blue-700);color:#fff;border-color:var(--blue-700)}
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.plan{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;box-shadow:var(--shadow-sm);transition:.25s;position:relative;display:flex;flex-direction:column}
.plan:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.plan.featured{border:2px solid var(--blue-500);box-shadow:var(--shadow-blue)}
.plan-badge{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,var(--orange),var(--orange-600));color:#fff;font-size:12px;font-weight:700;padding:5px 16px;border-radius:999px}
.plan .pname{font-size:18px;font-weight:800}
.plan .pdesc{font-size:13px;color:var(--muted);margin-top:6px;min-height:38px}
.price{font-size:40px;font-weight:900;color:var(--blue-700);margin:16px 0 4px;line-height:1}
.price .cur{font-size:20px}
.price .per{font-size:14px;color:var(--muted);font-weight:500}
.plan-feat{margin:18px 0;flex:1}
.plan-feat li{padding:8px 0 8px 24px;position:relative;font-size:13.5px;color:var(--ink);border-bottom:1px dashed var(--silver-200)}
.plan-feat li::before{content:"✓";position:absolute;left:0;top:8px;color:var(--blue-500);font-weight:800}
.plan-feat li.off{color:var(--muted)}
.plan-feat li.off::before{content:"—";color:var(--silver-300)}
.priv-box{background:linear-gradient(160deg,var(--blue-800),var(--blue-600));color:#fff;border-radius:var(--radius);padding:36px;display:grid;grid-template-columns:1.1fr .9fr;gap:30px;align-items:center}
.priv-box h3{font-size:24px;font-weight:800;margin-bottom:12px}
.priv-box p{font-size:14.5px;color:#cdd9f0}
.priv-list{margin-top:16px}
.priv-list li{padding:8px 0 8px 26px;position:relative;font-size:14px;color:#e7eefc}
.priv-list li::before{content:"●";position:absolute;left:0;top:8px;color:var(--orange);font-size:12px}
.deploy-cmp{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:30px}
.cmp-card{border:1px solid var(--line);border-radius:14px;padding:24px;box-shadow:var(--shadow-sm)}
.cmp-card h4{font-size:17px;font-weight:800;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.cmp-card ul{margin-top:6px}
.cmp-card li{padding:7px 0 7px 22px;position:relative;font-size:13.5px;color:var(--muted)}
.cmp-card li::before{content:"";position:absolute;left:0;top:14px;width:7px;height:7px;border-radius:50%;background:var(--blue-500)}

/* ---------- CONTACT (shared bottom) ---------- */
.contact{background:linear-gradient(160deg,var(--blue-900),var(--blue-700));color:#fff;position:relative;overflow:hidden}
.contact::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 90% 10%,rgba(255,106,19,.25),transparent)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:34px;position:relative;z-index:2}
.ct-card{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:var(--radius);padding:32px}
.ct-card h3{font-size:21px;font-weight:800;margin-bottom:8px}
.ct-card .desc{font-size:14px;color:#cdd9f0;margin-bottom:20px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}
.field label{display:block;font-size:13px;color:#cdd9f0;margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border-radius:10px;border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.08);color:#fff;font-size:14px;font-family:inherit}
.field input::placeholder,.field textarea::placeholder{color:#9fb2d6}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--orange);background:rgba(255,255,255,.12)}
.field select option{color:var(--ink)}
.ct-card .btn-orange{width:100%;margin-top:6px}

/* ---------- FOOTER ---------- */
footer{background:var(--blue-900);color:#aebedb;padding:56px 0 30px;font-size:13.5px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}
.foot-brand .logo{color:#fff;margin-bottom:14px}
.foot-brand p{color:#8fa3c8;max-width:300px}
.foot-col h4{color:#fff;font-size:15px;margin-bottom:14px}
.foot-col a{display:block;color:#aebedb;padding:5px 0;transition:.2s}
.foot-col a:hover{color:#fff}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:40px;padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;color:#7e92b8;font-size:12.5px}
.foot-bottom a{color:#7e92b8;margin-left:14px}
.foot-bottom a:hover{color:#fff}

/* ---------- 共享 SVG 图标系统 ---------- */
.ico{display:inline-flex;align-items:center;justify-content:center;width:1em;height:1em;flex:0 0 auto;vertical-align:-0.14em;color:inherit;line-height:1}
.ico svg{width:1em;height:1em;display:block;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* floating */
.floating{position:fixed;right:22px;bottom:26px;z-index:60;display:flex;flex-direction:column;gap:12px}
.fab{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;color:#fff;cursor:pointer;box-shadow:var(--shadow);font-size:22px;transition:.25s;border:none}
.fab:hover{transform:scale(1.08)}
.fab.kefu{background:linear-gradient(135deg,var(--blue-500),var(--blue-700))}
.fab.doc{background:linear-gradient(135deg,var(--orange),var(--orange-600));font-size:18px;font-weight:800}

/* reveal */
.reveal{opacity:0;transform:translateY(26px);transition:.7s cubic-bezier(.2,.7,.3,1)}
.reveal.in-view{opacity:1;transform:none}

/* ===================================================================
   HOME PAGE MODULES  (首页专属，引用共享设计系统)
   =================================================================== */

/* ---------- HERO ---------- */
.hero{
  position:relative;
  background:
    radial-gradient(1100px 560px at 82% -8%, rgba(47,107,255,.32), transparent 60%),
    radial-gradient(700px 420px at 8% 110%, rgba(255,106,19,.16), transparent 60%),
    linear-gradient(160deg,var(--blue-900),var(--blue-700));
  color:#fff;overflow:hidden;padding:84px 0 96px;
}
.hero::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:radial-gradient(circle at 60% 30%,#000,transparent 78%);
  mask-image:radial-gradient(circle at 60% 30%,#000,transparent 78%);
  opacity:.6}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero .eyebrow{background:rgba(255,255,255,.12);color:#a9c4ff}
.hero h1{font-size:46px;font-weight:800;line-height:1.28;letter-spacing:-1px}
.hero h1 .hl{background:linear-gradient(120deg,#ffd2a8,var(--orange));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .sub{color:#cdd9f0;font-size:18px;margin-top:20px;max-width:560px;line-height:1.75}
.tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tags span{font-size:13.5px;font-weight:600;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.18);color:#e7eefc;padding:8px 15px;border-radius:999px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-cta .btn-ghost{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.32)}
.hero-cta .btn-ghost:hover{background:rgba(255,255,255,.2)}
.trust{display:flex;gap:34px;margin-top:38px;flex-wrap:wrap}
.trust div{font-size:13.5px;color:#9fb2d6}
.trust b{display:block;font-size:26px;font-weight:900;color:#fff;line-height:1.15;margin-bottom:2px}

/* hero 3D data-flow visual */
.visual{position:relative;height:430px}
.flowline{position:absolute;inset:0;width:100%;height:100%;z-index:1}
.flowline path{stroke:rgba(120,170,255,.35);stroke-width:1.5;fill:none;stroke-dasharray:5 6;animation:flow 14s linear infinite}
@keyframes flow{to{stroke-dashoffset:-220}}
.orb{position:absolute;z-index:2}
.orb>div{width:104px;height:104px;border-radius:24px;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  box-shadow:0 10px 30px rgba(5,15,40,.35);animation:float 6s ease-in-out infinite}
.orb .ico{width:34px;height:34px;display:flex;align-items:center;justify-content:center}
.orb .ico svg{width:32px;height:32px;fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.role-ico svg{width:28px;height:28px;fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.agent-ava svg{width:30px;height:30px;fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.ind-ico{color:var(--blue-600)}
.ind-ico svg{width:30px;height:30px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.tech-point .ti svg{width:24px;height:24px;fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.fab svg{width:24px;height:24px;fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.orb .lbl{font-size:12.5px;font-weight:700;color:#e7eefc}
.orb.boss{top:2%;left:16%}
.orb.super{top:6%;right:4%}
.orb.hr{bottom:6%;left:4%}
.orb.flow{bottom:2%;right:8%}
.orb.kb{top:40%;right:28%}
.orb.boss>div{background:linear-gradient(135deg,rgba(47,107,255,.45),rgba(16,53,126,.55));border-color:rgba(120,170,255,.5)}
.orb.super>div{background:linear-gradient(135deg,rgba(25,195,166,.40),rgba(15,122,102,.50));border-color:rgba(80,220,190,.5)}
.orb.hr>div{background:linear-gradient(135deg,rgba(155,91,255,.40),rgba(91,47,176,.50));border-color:rgba(190,150,255,.5)}
.orb.flow>div{background:linear-gradient(135deg,rgba(255,138,61,.42),rgba(232,88,10,.52));border-color:rgba(255,170,110,.6)}
.orb.kb>div{background:linear-gradient(135deg,rgba(255,178,77,.42),rgba(232,138,10,.52));border-color:rgba(255,200,120,.6)}
.core{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);z-index:3;width:118px;height:118px;border-radius:50%;
  background:linear-gradient(135deg,var(--orange),var(--orange-600));display:grid;place-items:center;color:#fff;font-weight:900;font-size:18px;letter-spacing:.5px;
  box-shadow:0 0 0 8px rgba(255,106,19,.18),0 20px 50px rgba(232,88,10,.5);animation:pulse 4s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@keyframes pulse{0%,100%{box-shadow:0 0 0 8px rgba(255,106,19,.18),0 20px 50px rgba(232,88,10,.5)}50%{box-shadow:0 0 0 14px rgba(255,106,19,.10),0 20px 50px rgba(232,88,10,.5)}}

/* ---------- ROLES ---------- */
.role-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:50px}
.role-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow-sm);transition:.3s;position:relative;overflow:hidden}
.role-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--blue-500)}
.role-card.r1::before{background:linear-gradient(90deg,var(--blue-500),var(--blue-700))}
.role-card.r2::before{background:linear-gradient(90deg,#19c3a6,#0f7a66)}
.role-card.r3::before{background:linear-gradient(90deg,#9b5bff,#5b2fb0)}
.role-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.role-card .top{display:flex;align-items:center;gap:14px;margin-bottom:18px}
.role-ico{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,var(--blue-500),var(--blue-700));display:grid;place-items:center;font-size:26px;flex:none}
.role-card.r2 .role-ico{background:linear-gradient(135deg,#19c3a6,#0f7a66)}
.role-card.r3 .role-ico{background:linear-gradient(135deg,#9b5bff,#5b2fb0)}
.role-card h3{font-size:20px;font-weight:800}
.role-tag{font-size:12.5px;color:var(--muted);font-weight:600;margin-top:2px}
.pain,.fix{margin-top:14px;border-radius:12px;padding:14px 16px}
.pain{background:var(--silver-100)}
.fix{background:linear-gradient(180deg,#eef4ff,#f7faff);border:1px solid #d8e6ff}
.badge-pain,.badge-fix{display:inline-block;font-size:12px;font-weight:800;padding:3px 10px;border-radius:6px;margin-bottom:8px}
.badge-pain{background:#ffe9e6;color:#d8421a}
.badge-fix{background:#e2edff;color:var(--blue-700)}
.pain p,.fix p{font-size:13.5px;line-height:1.7;color:#46566f}
.fix p{color:var(--ink)}

/* ---------- AGENTS (home) ---------- */
.agents{background:var(--silver-50)}
.agent-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:50px}
.agent-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm);transition:.3s;display:flex;flex-direction:column}
.agent-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--silver-300)}
.agent-head{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.agent-ava{width:54px;height:54px;border-radius:14px;display:grid;place-items:center;font-size:28px;color:#fff;flex:none}
.agent-head h3{font-size:17px;font-weight:800}
.agent-head .role-tag{color:var(--muted);font-size:12.5px;font-weight:600;margin-top:2px}
.cap{font-size:12px;font-weight:800;color:var(--blue-500);letter-spacing:1px;margin-bottom:10px}
.agent-card ul{margin-bottom:16px}
.agent-card ul li{font-size:13.5px;color:#46566f;padding:7px 0 7px 22px;position:relative}
.agent-card ul li::before{content:"";position:absolute;left:0;top:15px;width:7px;height:7px;border-radius:50%;background:var(--silver-300)}
.agent-val{margin-top:auto;background:var(--silver-100);border-radius:12px;padding:14px 16px;font-size:13.5px;color:#46566f;line-height:1.65}
.agent-val b{color:var(--blue-700)}

/* ---------- VALUE ---------- */
.value{background:linear-gradient(160deg,var(--blue-800),var(--blue-600));color:#fff;position:relative;overflow:hidden}
.value .eyebrow{background:rgba(255,255,255,.14);color:#bcd2ff}
.value .sec-title{color:#fff}
.value-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:50px}
.value-card{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.15);border-radius:var(--radius);padding:30px 22px;text-align:center}
.value-card .num{font-size:46px;font-weight:900;line-height:1;background:linear-gradient(120deg,#ffd2a8,var(--orange));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.value-card .suf{-webkit-text-fill-color:var(--orange);color:var(--orange);font-size:20px;font-weight:900}
.value-card .vt{font-size:13.5px;color:#cdd9f0;margin-top:14px;line-height:1.7}

/* ---------- INDUSTRY ---------- */
.ind-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:50px}
.ind-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm);transition:.3s;border-top:4px solid var(--blue-500)}
.ind-card.ind1{border-top-color:var(--blue-500)}
.ind-card.ind2{border-top-color:#19c3a6}
.ind-card.ind3{border-top-color:#9b5bff}
.ind-card.ind4{border-top-color:var(--orange)}
.ind-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.ind-ico{width:54px;height:54px;border-radius:14px;background:var(--silver-100);display:grid;place-items:center;font-size:28px;margin-bottom:14px}
.ind-card h3{font-size:18px;font-weight:800;margin-bottom:8px}
.ind-card p{font-size:13.5px;color:var(--muted);line-height:1.7}
.ind-card .more{display:inline-block;margin-top:14px;color:var(--blue-600);font-weight:700;font-size:13.5px}

/* ---------- CASES ---------- */
.cases{background:var(--silver-50)}
.case-head{font-size:30px;font-weight:800;text-align:center;letter-spacing:-.5px}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:30px}
.case-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);transition:.3s}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.case-top{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.case-logo{width:46px;height:46px;border-radius:12px;background:linear-gradient(135deg,var(--blue-500),var(--blue-700));color:#fff;display:grid;place-items:center;font-weight:800;font-size:20px;flex:none}
.case-top .ct{font-weight:800;font-size:15px}
.case-top .cs{font-size:12.5px;color:var(--muted)}
.case-compare{display:grid;grid-template-columns:1fr 1fr;gap:12px;background:var(--silver-50);border-radius:12px;padding:14px;margin-bottom:14px}
.case-compare .lab{font-size:12px;color:var(--muted)}
.case-compare .v{font-size:24px;font-weight:900;color:#d8421a;line-height:1.1;margin-top:2px}
.case-compare .v.after{color:#0f9d6b}
.case-quote{font-size:13px;color:#46566f;line-height:1.65;border-left:3px solid var(--blue-400);padding-left:12px}

/* ---------- TECH ---------- */
.tech-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start}
.tech-points{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.tech-point{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;box-shadow:var(--shadow-sm);transition:.25s}
.tech-point:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.tech-point .ti{width:46px;height:46px;border-radius:12px;background:linear-gradient(135deg,var(--blue-500),var(--blue-700));display:grid;place-items:center;font-size:22px;color:#fff;margin-bottom:12px}
.tech-point h4{font-size:16px;font-weight:800;margin-bottom:6px}
.tech-point p{font-size:13px;color:var(--muted);line-height:1.65}
.tech-visual{background:linear-gradient(160deg,#0a2350,#10357e);border-radius:var(--radius);padding:28px;color:#fff}
.tv-title{font-size:16px;font-weight:800;margin-bottom:18px;text-align:center}
.arch{display:flex;flex-direction:column;gap:0}
.arch .layer{border-radius:14px;padding:18px 20px;background:linear-gradient(135deg,rgba(47,107,255,.55),rgba(16,53,126,.65));border:1px solid rgba(120,170,255,.4)}
.arch .layer:nth-child(1){background:linear-gradient(135deg,rgba(47,107,255,.60),rgba(16,53,126,.72))}
.arch .layer:nth-child(3){background:linear-gradient(135deg,rgba(25,195,166,.50),rgba(15,122,102,.62))}
.arch .layer:nth-child(5){background:linear-gradient(135deg,rgba(10,35,80,.72),rgba(26,79,176,.45))}
.arch .layer+.layer{margin-top:14px}
.arch .lt{font-size:15px;font-weight:800}
.arch .ld{font-size:12.5px;color:#cdd9f0;margin-top:6px}
.arch .conn{text-align:center;color:#9fc0ff;font-size:12px;font-weight:700;padding:6px 0}

/* responsive */
@media (max-width:1024px){
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .adv-grid{grid-template-columns:repeat(2,1fr)}
  .plan-grid{grid-template-columns:1fr}
  .priv-box{grid-template-columns:1fr}
  .step-list{grid-template-columns:1fr}
  .hero-grid{grid-template-columns:1fr}
  .visual{height:380px;max-width:460px;margin:10px auto 0}
  .role-grid,.agent-grid,.ind-grid,.case-grid{grid-template-columns:repeat(2,1fr)}
  .value-grid{grid-template-columns:repeat(2,1fr)}
  .tech-grid{grid-template-columns:1fr}
}
@media (max-width:768px){
  .wrap{padding:0 18px}
  .menu,.nav-cta .btn-line{display:none}
  .menu.open{display:flex;position:absolute;top:68px;left:0;right:0;flex-direction:column;background:#fff;padding:18px 24px;gap:14px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-sm)}
  .hamburger{display:flex}
  .section{padding:60px 0}
  .hero{padding:60px 0 70px}
  .hero h1{font-size:32px}
  .hero .sub{font-size:16px}
  .subhero h1{font-size:30px}
  .subhero p{font-size:16px}
  .sec-title{font-size:27px}
  .feat-grid,.adv-grid,.plan-grid,.deploy-cmp,.contact-grid{grid-template-columns:1fr}
  .priv-box{grid-template-columns:1fr}
  .step-list{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .role-grid,.agent-grid,.ind-grid,.case-grid,.value-grid{grid-template-columns:1fr}
  .tech-points{grid-template-columns:1fr}
  .orb>div{width:88px;height:88px;border-radius:20px}
  .orb .ico{font-size:24px}
}
@media (max-width:480px){
  .foot-grid{grid-template-columns:1fr}
  .subhero h1{font-size:26px}
  .hero h1{font-size:27px}
  .trust{gap:18px}
  .case-compare{grid-template-columns:1fr 1fr}
}

/* =========================================================
 *  资讯中心 / 招聘 / 文章详情（前台新增）
 * ========================================================= */
/* 分类筛选条 */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:26px 0 34px}
.filter-bar .fb{padding:9px 20px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--muted);font-size:14px;font-weight:600;cursor:pointer;transition:.2s}
.filter-bar .fb:hover{border-color:var(--blue-400);color:var(--blue-600)}
.filter-bar .fb.active{background:var(--blue-600);border-color:var(--blue-600);color:#fff;box-shadow:0 8px 20px rgba(26,79,176,.28)}

/* 资讯网格 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:.25s;cursor:pointer}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--silver-300)}
.news-thumb{aspect-ratio:16/9;background:linear-gradient(135deg,var(--blue-700),var(--blue-500));position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-thumb .ph{color:rgba(255,255,255,.9);font-size:40px}
.news-thumb .cat-tag{position:absolute;top:12px;left:12px;background:rgba(0,0,0,.42);color:#fff;font-size:12px;padding:4px 12px;border-radius:999px;backdrop-filter:blur(4px)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-body h3{font-size:18px;line-height:1.45;margin-bottom:10px;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{color:var(--muted);font-size:14px;flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;justify-content:space-between;align-items:center;margin-top:16px;font-size:13px;color:var(--muted)}
.news-meta .rd{color:var(--blue-600);font-weight:600}
.news-featured{grid-column:span 3;display:grid;grid-template-columns:1.1fr 1fr;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);cursor:pointer;transition:.25s}
.news-featured:hover{box-shadow:var(--shadow)}
.news-featured .news-thumb{aspect-ratio:auto}
.news-featured .news-body{padding:34px 38px}
.news-featured .news-body h3{font-size:24px;-webkit-line-clamp:3}
.news-featured .fbadge{display:inline-block;background:var(--orange-soft);color:var(--orange-600);font-size:12px;font-weight:700;padding:4px 12px;border-radius:999px;margin-bottom:14px;width:fit-content}

/* 文章详情 */
.article{max-width:820px;margin:0 auto}
.article .a-cat{color:var(--blue-600);font-weight:700;font-size:14px}
.article h1{font-size:34px;line-height:1.35;margin:12px 0 16px;color:var(--ink)}
.article .a-meta{display:flex;gap:18px;color:var(--muted);font-size:14px;padding-bottom:22px;border-bottom:1px solid var(--line);margin-bottom:28px;flex-wrap:wrap}
.article .a-cover{width:100%;border-radius:var(--radius);margin-bottom:28px;aspect-ratio:16/8;object-fit:cover;background:linear-gradient(135deg,var(--blue-700),var(--blue-500))}
.article .a-content{font-size:16.5px;line-height:1.95;color:#31405c}
.article .a-content p{margin-bottom:20px;color:#31405c}
.a-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:32px}
.a-tags .t{background:var(--silver-100);color:var(--muted);font-size:13px;padding:6px 14px;border-radius:999px}
.a-back{display:inline-flex;align-items:center;gap:6px;color:var(--blue-600);font-weight:600;margin-bottom:22px}

/* 招聘 */
.job-intro{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:38px}
.job-intro .ji{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;text-align:center;box-shadow:var(--shadow-sm)}
.job-intro .ji .n{font-size:30px;font-weight:800;color:var(--blue-600)}
.job-intro .ji .l{color:var(--muted);margin-top:6px}
.job-list{display:flex;flex-direction:column;gap:16px}
.job-card{display:flex;align-items:center;justify-content:space-between;gap:20px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 28px;box-shadow:var(--shadow-sm);transition:.22s;cursor:pointer}
.job-card:hover{transform:translateX(4px);box-shadow:var(--shadow);border-color:var(--blue-400)}
.job-card .jc-l h3{font-size:19px;margin-bottom:8px;display:flex;align-items:center;gap:10px}
.job-card .jc-l .hot{background:var(--orange-soft);color:var(--orange-600);font-size:11px;font-weight:700;padding:2px 9px;border-radius:999px}
.job-tags{display:flex;flex-wrap:wrap;gap:8px}
.job-tags span{background:var(--silver-100);color:var(--muted);font-size:13px;padding:4px 12px;border-radius:8px}
.job-card .jc-r{text-align:right;white-space:nowrap;display:flex;flex-direction:column;align-items:flex-end;gap:10px}
.job-card .sal{color:var(--orange-600);font-weight:800;font-size:18px}
.job-detail-box{max-width:820px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:38px 42px;box-shadow:var(--shadow-sm)}
.job-detail-box h1{font-size:30px;margin-bottom:14px}
.job-detail-box .jd-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.job-detail-box .jd-tags span{background:var(--silver-100);color:var(--muted);padding:6px 14px;border-radius:8px;font-size:14px}
.job-detail-box h3{font-size:17px;margin:26px 0 10px;color:var(--blue-700);display:flex;align-items:center;gap:8px}
.job-detail-box h3::before{content:"";width:4px;height:16px;background:var(--blue-500);border-radius:3px;display:inline-block}
.job-detail-box p{color:#31405c;white-space:pre-line}
.empty-hint{text-align:center;color:var(--muted);padding:60px 0}

@media (max-width:1024px){
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .news-featured{grid-column:span 2}
  .job-intro{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:768px){
  .news-grid{grid-template-columns:1fr}
  .news-featured{grid-column:span 1;grid-template-columns:1fr}
  .news-featured .news-body{padding:24px}
  .job-intro{grid-template-columns:1fr}
  .job-card{flex-direction:column;align-items:flex-start}
  .job-card .jc-r{text-align:left;align-items:flex-start}
  .article h1{font-size:26px}
}

/* ==================== 帮助中心（help.html）2026-09-12 新增 ==================== */
.help-search{max-width:640px;margin:0 auto 30px;position:relative}
.help-search input{width:100%;padding:16px 52px 16px 22px;border-radius:999px;border:1px solid var(--silver-300);background:#fff;font-size:15px;font-family:var(--font);color:var(--ink);outline:none;transition:.25s;box-shadow:var(--shadow-sm)}
.help-search input:focus{border-color:var(--blue-500);box-shadow:0 0 0 4px rgba(47,107,255,.12)}
.help-search .hs-ico{position:absolute;right:18px;top:50%;transform:translateY(-50%);width:20px;height:20px;opacity:.45;pointer-events:none}
.help-tip{margin-top:12px;font-size:13px;color:var(--muted);text-align:center}
.help-tip a{color:var(--blue-600);font-weight:600}

.qa-list{margin-top:6px}
.qa-item{background:#fff;border:1px solid var(--silver-200);border-radius:var(--radius-sm);margin-bottom:12px;overflow:hidden;transition:.25s}
.qa-item:hover{border-color:var(--blue-400);box-shadow:var(--shadow-sm)}
.qa-item.open{border-color:var(--blue-500);box-shadow:var(--shadow-blue)}
.qa-q{display:flex;align-items:flex-start;gap:13px;padding:18px 22px;cursor:pointer;font-size:15px;font-weight:700;color:var(--ink);line-height:1.55;user-select:none}
.qa-q .qm{flex:0 0 auto;width:22px;height:22px;border-radius:6px;background:var(--blue-600);color:#fff;font-size:12.5px;display:flex;align-items:center;justify-content:center;font-weight:700;margin-top:1px}
.qa-q .qt{flex:1}
.qa-q .qc{flex:0 0 auto;width:18px;height:18px;position:relative;margin-top:3px;transition:.3s;opacity:.5}
.qa-q .qc::before,.qa-q .qc::after{content:"";position:absolute;background:var(--blue-700);border-radius:2px;left:50%;top:50%;transform:translate(-50%,-50%)}
.qa-q .qc::before{width:13px;height:2px}
.qa-q .qc::after{width:2px;height:13px;transition:.3s}
.qa-item.open .qc::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.qa-a{display:none;padding:0 22px 20px 57px;font-size:14.4px;line-height:1.85;color:var(--muted)}
.qa-item.open .qa-a{display:block;animation:fade .3s ease}
.qa-a p{margin-bottom:9px}
.qa-a p:last-child{margin-bottom:0}
.qa-a ol,.qa-a ul{margin:8px 0 10px 20px}
.qa-a li{margin-bottom:5px}
.qa-a b{color:var(--ink)}
.qa-a code{background:var(--silver-50);border:1px solid var(--silver-200);border-radius:4px;padding:1px 6px;font-size:13px;color:var(--blue-700)}
.qa-a .qa-note{margin-top:10px;padding:11px 14px;background:#f2f7ff;border-left:3px solid var(--blue-500);border-radius:0 6px 6px 0;font-size:13.4px;color:#2b4a80}
.qa-empty{display:none;text-align:center;padding:50px 20px;color:var(--muted);font-size:14.5px}
.qa-empty.show{display:block}

.help-cats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:26px}
.help-cat{background:#fff;border:1px solid var(--silver-200);border-radius:var(--radius-sm);padding:22px 18px;text-align:center;transition:.28s;cursor:pointer;text-decoration:none;display:block}
.help-cat:hover{transform:translateY(-4px);border-color:var(--blue-400);box-shadow:var(--shadow-blue)}
.help-cat .hc-ico{width:46px;height:46px;margin:0 auto 12px;border-radius:12px;background:linear-gradient(135deg,var(--blue-500),var(--blue-800));display:flex;align-items:center;justify-content:center;color:#fff}
.help-cat .hc-ico svg{width:23px;height:23px}
.help-cat h4{font-size:14.6px;color:var(--ink);margin-bottom:6px}
.help-cat p{font-size:12.6px;color:var(--muted);line-height:1.65;margin:0}
.help-cat .hc-n{display:inline-block;margin-top:10px;font-size:12px;color:var(--blue-600);font-weight:700;background:#eef4ff;padding:2px 9px;border-radius:999px}

.help-chan{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:26px}
.chan-card{background:#fff;border:1px solid var(--silver-200);border-radius:var(--radius-sm);padding:26px 22px;transition:.28s}
.chan-card:hover{border-color:var(--blue-400);box-shadow:var(--shadow-blue)}
.chan-card .cc-top{display:flex;align-items:center;gap:11px;margin-bottom:12px}
.chan-card .cc-ico{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#2f6bff,#10357e);color:#fff;flex:0 0 auto}
.chan-card .cc-ico svg{width:20px;height:20px}
.chan-card h4{font-size:15px;color:var(--ink);margin:0}
.chan-card p{font-size:13.4px;color:var(--muted);line-height:1.75;margin-bottom:10px}
.chan-card .cc-meta{font-size:12.8px;color:var(--blue-700);font-weight:600}

@media (max-width:1024px){
  .help-cats{grid-template-columns:repeat(2,1fr)}
  .help-chan{grid-template-columns:1fr}
}
@media (max-width:768px){
  .help-cats{grid-template-columns:1fr}
  .qa-q{font-size:14.2px;padding:15px 16px}
  .qa-a{padding:0 16px 17px 16px}
  .qa-q .qm{display:none}
  .qa-item.open .qa-a{padding-left:16px}
}

/* ===== Contact page: 沟通方式卡片 ===== */
.contact-methods{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:28px;margin-bottom:0}
.cm-card{background:#fff;border:1px solid var(--silver-200);border-radius:var(--radius);padding:32px 24px;text-align:center;transition:.28s;cursor:default}
.cm-card:hover{transform:translateY(-4px);border-color:var(--blue-400);box-shadow:var(--shadow-blue)}
.cm-ico{width:60px;height:60px;margin:0 auto 16px;border-radius:16px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--blue-500),var(--blue-800));color:#fff}
.cm-ico svg{width:28px;height:28px}
.cm-card h3{font-size:17px;color:var(--ink);margin:0 0 8px}
.cm-card p{font-size:13.8px;color:var(--muted);line-height:1.7;margin-bottom:10px}
.cm-meta{font-size:14.2px;color:var(--blue-700);font-weight:600;display:inline-block}

/* ===== Contact page: 联系信息三卡 ===== */
.contact-info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:24px;margin-bottom:0}
.ci-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:28px 22px;text-align:center;transition:.28s}
.ci-card:hover{background:rgba(255,255,255,.12);border-color:var(--blue-400)}
.ci-ico{width:50px;height:50px;margin:0 auto 14px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:rgba(47,107,255,.25);color:#a9c4ff}
.ci-ico svg{width:24px;height:24px}
.ci-card h4{font-size:15px;color:#fff;margin:0 0 6px}
.ci-card p{font-size:13.4px;color:rgba(255,255,255,.75);line-height:1.7;margin:0}

/* ===== Contact page: 表单样式 ===== */
.trial-form,.demo-form{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 18px;max-width:680px;margin:0 auto}
.trial-form .field-full,.demo-form .field-full{grid-column:1/-1}
.trial-form .field,.demo-form .field{display:flex;flex-direction:column}
.trial-form label,.demo-form label{font-size:13px;color:var(--ink);margin-bottom:4px;font-weight:600}
.trial-form input,.demo-form input,.trial-form select,.demo-form select{padding:10px 13px;border:1px solid var(--silver-200);border-radius:8px;font-size:14px;color:var(--ink);background:#fff;transition:.2s}
.trial-form input:focus,.demo-form input:focus,.trial-form select:focus,.demo-form select:focus{outline:none;border-color:var(--blue-500);box-shadow:0 0 0 3px rgba(47,107,255,.12)}
.trial-form textarea,.demo-form textarea{padding:10px 13px;border:1px solid var(--silver-200);border-radius:8px;font-size:14px;color:var(--ink);background:#fff;resize:vertical;min-height:80px;transition:.2s}
.trial-form textarea:focus,.demo-form textarea:focus{outline:none;border-color:var(--blue-500);box-shadow:0 0 0 3px rgba(47,107,255,.12)}
.trial-form .btn-submit,.demo-form .btn-submit{text-align:center;grid-column:1/-1}

@media (max-width:1024px){.contact-methods,.contact-info-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:768px){.contact-methods,.contact-info-grid,.trial-form,.demo-form{grid-template-columns:1fr}}