:root{
  --bg:#0a0e14;--bg2:#0f1520;--card:#131b28;--line:#1f2a3a;
  --txt:#e8edf4;--sub:#8b98ab;--dim:#5b6879;
  --red:#e0453a;--red2:#ff6b5e;--gold:#d9a441;--green:#3ecf8e;--blue:#4d9fff;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--txt);font-family:"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;line-height:1.7;overflow-x:hidden}
a{color:inherit;text-decoration:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}

/* ============ NAV ============ */
nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(10,14,20,.88);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-in{max-width:1180px;margin:0 auto;padding:0 24px;height:64px;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16.5px}
.logo .shield{width:28px;height:32px;flex:none}
.nav-links{display:flex;gap:6px;font-size:14px;color:var(--sub)}
.nav-links a{padding:7px 14px;border-radius:8px;transition:.2s}
.nav-links a:hover{color:var(--txt);background:rgba(255,255,255,.05)}
.nav-links a.on{color:var(--red2);background:rgba(224,69,58,.1)}
.nav-cta{background:linear-gradient(135deg,var(--red),#b93028);padding:8px 20px;border-radius:8px;font-size:14px;font-weight:600;color:#fff}
.burger{display:none;background:none;border:0;color:var(--txt);font-size:24px;cursor:pointer}
@media(max-width:880px){
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:var(--bg2);flex-direction:column;padding:14px 24px;border-bottom:1px solid var(--line)}
  .nav-links.open{display:flex}
  .burger{display:block}
}

/* ============ HERO ============ */
.hero{position:relative;padding:150px 0 90px;text-align:center;background:radial-gradient(ellipse 70% 50% at 50% -10%,rgba(224,69,58,.15),transparent),radial-gradient(ellipse 40% 35% at 80% 20%,rgba(217,164,65,.06),transparent)}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:56px 56px;opacity:.18;mask-image:radial-gradient(ellipse 60% 60% at 50% 30%,#000 30%,transparent 75%)}
.hero>*{position:relative}
.badge{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);background:rgba(19,27,40,.8);border-radius:99px;padding:6px 18px;font-size:13px;color:var(--sub);margin-bottom:28px}
.badge .dot{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 8px var(--green)}
.hero h1{font-size:50px;font-weight:800;letter-spacing:2px;line-height:1.25}
.hero h1 .red{background:linear-gradient(120deg,var(--red2),var(--gold));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .pitch{font-size:18px;line-height:2;color:var(--sub);max-width:720px;margin:30px auto 24px;font-weight:300}
.hero-chips{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-bottom:20px}
.hero-chips span{font-size:13.5px;color:var(--sub);border:1px solid var(--line);border-radius:99px;padding:7px 20px;background:rgba(19,27,40,.55);letter-spacing:.5px;white-space:nowrap}
.hero .sub{font-size:13.5px;color:var(--dim);max-width:680px;margin:0 auto 42px;letter-spacing:.3px}
.cta-row{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn{padding:13px 34px;border-radius:10px;font-size:15px;font-weight:600;transition:.2s;display:inline-block}
.btn-primary{background:linear-gradient(135deg,var(--red),#b93028);color:#fff;box-shadow:0 8px 24px rgba(224,69,58,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(224,69,58,.4)}
.btn-ghost{border:1px solid var(--line);color:var(--sub)}
.btn-ghost:hover{border-color:var(--red);color:var(--txt)}
.btn-sm{padding:9px 22px;font-size:13.5px}

/* hero terminal */
.term{max-width:760px;margin:52px auto 0;background:#0b1018;border:1px solid var(--line);border-radius:14px;overflow:hidden;text-align:left;box-shadow:0 24px 60px rgba(0,0,0,.5)}
.term-bar{background:#111826;padding:11px 16px;display:flex;gap:7px;align-items:center}
.term-bar i{width:11px;height:11px;border-radius:50%;display:inline-block}
.term-bar .r{background:#ff5f57}.term-bar .y{background:#febc2e}.term-bar .g{background:#28c840}
.term-bar span{margin-left:10px;font-size:12px;color:var(--dim);font-family:Consolas,monospace}
.term-body{padding:20px 24px;font-family:Consolas,"Courier New",monospace;font-size:13.5px;color:#a8b6c8;min-height:230px;white-space:pre-wrap;line-height:1.85}
.term-body .c{color:#4f5d70}.term-body .k{color:#ff6b5e}.term-body .g{color:#3ecf8e}.term-body .y{color:#d9a441}.term-body .b{color:#4d9fff}.term-body .cur{display:inline-block;width:8px;height:15px;background:#3ecf8e;vertical-align:-2px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* ============ STATS ============ */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg2)}
.stats-in{max-width:1180px;margin:0 auto;padding:26px 24px;display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:16px;text-align:center}
.stat b{display:block;font-size:26px;font-weight:800;color:var(--gold);font-family:Consolas,monospace}
.stat span{font-size:12px;color:var(--dim);letter-spacing:1px}

/* ============ SECTIONS ============ */
section{padding:88px 0}
.sec-head{text-align:center;margin-bottom:54px}
.sec-head .kicker{font-size:13px;color:var(--red2);letter-spacing:4px;font-weight:600;margin-bottom:10px}
.sec-head h2{font-size:34px;font-weight:800}
.sec-head p{color:var(--sub);margin-top:12px;font-size:15px;max-width:680px;margin-left:auto;margin-right:auto}

/* ============ PHILOSOPHY ============ */
.philo{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.philo-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:26px 24px;transition:.25s}
.philo-card:hover{border-color:rgba(224,69,58,.5);transform:translateY(-4px)}
.philo-card .num{font-family:Consolas,monospace;font-size:13px;color:var(--red2);margin-bottom:10px}
.philo-card h3{font-size:17px;margin-bottom:8px}
.philo-card p{font-size:13.5px;color:var(--sub)}

/* ============ FEATURES / TABS ============ */
.tabs{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-bottom:34px}
.tab{border:1px solid var(--line);background:var(--card);color:var(--sub);border-radius:10px;padding:10px 22px;font-size:14px;cursor:pointer;transition:.2s;font-family:inherit}
.tab:hover{color:var(--txt)}
.tab.on{border-color:var(--red);color:var(--red2);background:rgba(224,69,58,.08)}
.panel{display:none}
.panel.on{display:block;animation:fade .35s}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.panel-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center}
@media(max-width:880px){.panel-grid{grid-template-columns:1fr}}
.panel-grid h3{font-size:22px;margin-bottom:14px}
.panel-grid .desc{font-size:14.5px;color:var(--sub);margin-bottom:20px}
.panel-grid .pts{list-style:none}
.panel-grid .pts li{font-size:14px;color:var(--sub);padding:8px 0;border-bottom:1px dashed var(--line)}
.panel-grid .pts li b{color:var(--txt)}
.panel-grid .pts li::before{content:"◆";color:var(--red2);margin-right:10px;font-size:11px;vertical-align:2px}
.vis{background:#0b1018;border:1px solid var(--line);border-radius:14px;padding:22px;font-family:Consolas,monospace;font-size:12.5px;color:#a8b6c8;overflow-x:auto;line-height:1.9}
.vis .c{color:#4f5d70}.vis .k{color:#ff6b5e}.vis .g{color:#3ecf8e}.vis .y{color:#d9a441}.vis .b{color:#4d9fff}

/* ============ DASHBOARD MOCK（对齐产品内置大屏布局） ============ */
.dash{background:#0b1018;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:0 24px 60px rgba(0,0,0,.5)}
.dash-bar{background:#111826;padding:9px 16px;display:flex;gap:7px}
.dash-bar i{width:11px;height:11px;border-radius:50%}
.dash-bar .r{background:#ff5f57}.dash-bar .y{background:#febc2e}.dash-bar .g{background:#28c840}
.db-top{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 16px;border-bottom:1px solid rgba(56,130,246,.14);background:rgba(9,17,38,.5)}
.db-brand{font-size:13px;font-weight:700}
.db-brand span{display:block;font-family:Consolas,monospace;font-size:9.5px;font-weight:400;color:#3d5675;letter-spacing:.6px;margin-top:2px}
.db-right{display:flex;align-items:center;gap:10px;font-family:Consolas,monospace;font-size:11px;color:var(--dim);white-space:nowrap}
.db-demo{border:1px solid rgba(217,164,65,.5);color:var(--gold);font-size:9.5px;padding:2px 7px;border-radius:5px;letter-spacing:.7px}
.db-live{color:var(--green);display:flex;align-items:center;gap:5px}
.db-live::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--green);box-shadow:0 0 9px rgba(62,207,142,.9);animation:dbpulse 1.6s infinite}
@keyframes dbpulse{50%{opacity:.25}}
.db-ticker{height:28px;display:flex;align-items:center;overflow:hidden;border-bottom:1px solid rgba(56,130,246,.14);background:rgba(9,17,38,.32)}
.db-ticker>div{white-space:nowrap;font-family:Consolas,monospace;font-size:10.5px;color:#8fb0dd;padding-left:100%;animation:dbtk 34s linear infinite}
@keyframes dbtk{to{transform:translateX(-100%)}}
.db-ticker b{color:#ff9f9f;font-weight:700}
.db-in{padding:12px}
.db-kpis{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;margin-bottom:9px}
.db-kpi{background:var(--card);border:1px solid var(--line);border-radius:9px;padding:8px 10px}
.db-kpi .v{font-family:Consolas,monospace;font-size:16px;font-weight:700;line-height:1.25}
.db-kpi .v.red{color:var(--red2)}.db-kpi .v.amber{color:var(--gold)}.db-kpi .v.green{color:var(--green)}
.db-kpi .l{font-size:10px;color:var(--dim);margin-top:1px}
.db-kpi .d{font-size:9px;color:#3d5675;font-family:Consolas,monospace}
.db-kpi .d.up{color:#c9584f}
.db-3{display:grid;grid-template-columns:1fr 1.12fr 1fr;gap:8px;margin-bottom:8px;align-items:stretch}
.db-col{display:flex;flex-direction:column;gap:8px}
.db-col>.db-p{flex:1;display:flex;flex-direction:column}
.db-p .db-h{flex:none}
.db-col>.db-p>.db-vec,.db-col>.db-p>.db-src,.db-col>.db-p>.db-chips,.db-col>.db-p>.db-mods,.db-col>.db-p>.db-subs{flex:1;display:flex;flex-direction:column;justify-content:space-evenly}
.db-col>.db-p>.db-chips{flex-direction:row;flex-wrap:wrap;align-content:center;align-items:flex-start;gap:6px}
.db-p{background:var(--card);border:1px solid var(--line);border-radius:9px;padding:9px 11px}
.db-p .db-h{font-size:11px;margin:0 0 8px;display:flex;justify-content:space-between;align-items:baseline;color:var(--txt);font-weight:600}
.db-p .db-h em{font-style:normal;font-family:Consolas,monospace;font-size:8.5px;color:#3d5675;letter-spacing:.6px}
.db-vec .row,.db-src .row,.db-mods .row,.db-subs .row{display:flex;align-items:center;gap:7px;font-family:Consolas,monospace;font-size:10px;color:var(--sub);margin-bottom:6px}
.db-vec .row:last-child,.db-src .row:last-child,.db-mods .row:last-child,.db-subs .row:last-child{margin-bottom:0}
.db-vec .nm{flex:none;width:58px;color:#8fb0dd}
.db-vec .bar{flex:1;height:7px;border-radius:4px;background:rgba(255,255,255,.05);overflow:hidden}
.db-vec .bar i{display:block;height:100%;border-radius:4px;background:linear-gradient(90deg,rgba(224,69,58,.55),#e0453a)}
.db-vec .bar i.g2{background:linear-gradient(90deg,rgba(62,207,142,.4),#3ecf8e)}
.db-vec .ct,.db-src .ct{flex:none;width:42px;text-align:right;color:#c7d2e0}
.db-src .ip{flex:1;color:#c7d2e0}
.db-src .geo{flex:none;width:22px;color:#d9a441}
.db-p-globe{flex:none}
.db-globe{position:relative;flex:1;min-height:124px;border-radius:8px;overflow:hidden;background:radial-gradient(circle at 50% 58%,rgba(45,110,200,.22),rgba(9,17,38,.95) 65%)}
.db-globe .ring{position:absolute;left:50%;top:58%;transform:translate(-50%,-50%);border-radius:50%;border:1px solid rgba(77,159,255,.16)}
.db-globe .r1{width:66px;height:66px;border-style:dashed}
.db-globe .r2{width:112px;height:112px;border-color:rgba(77,159,255,.13)}
.db-globe .r3{width:160px;height:160px;border-color:rgba(77,159,255,.1)}
.db-globe .sweep{position:absolute;left:50%;top:58%;width:190px;height:190px;margin:-95px 0 0 -95px;border-radius:50%;background:conic-gradient(rgba(224,69,58,0) 0deg,rgba(224,69,58,.26) 46deg,rgba(224,69,58,0) 92deg);animation:dbspin 5s linear infinite}
@keyframes dbspin{to{transform:rotate(360deg)}}
.db-globe .pt{position:absolute;width:5px;height:5px;border-radius:50%;background:#ff5f57;box-shadow:0 0 10px rgba(255,95,87,.95);animation:dbpulse 2.2s infinite}
.db-globe .p1{left:26%;top:34%}.db-globe .p2{left:64%;top:26%;animation-delay:.5s}
.db-globe .p3{left:72%;top:62%;animation-delay:1s}.db-globe .p4{left:20%;top:66%;animation-delay:1.5s}
.db-globe .p5{left:48%;top:20%;animation-delay:.8s}.db-globe .p6{left:38%;top:78%;animation-delay:1.2s}
.db-globe .core{position:absolute;left:50%;top:58%;width:9px;height:9px;margin:-4.5px 0 0 -4.5px;border-radius:50%;background:#3ecf8e;box-shadow:0 0 14px rgba(62,207,142,.9)}
.db-chart{width:100%;flex:1;min-height:84px;display:block}
.db-chart .grid{stroke:rgba(255,255,255,.055);stroke-width:.7;fill:none}
.db-chart .l1{fill:none;stroke:#4d9fff;stroke-width:1.4}
.db-chart .l2{fill:none;stroke:#e0453a;stroke-width:1.2;stroke-dasharray:3 2}
.db-legend{display:flex;align-items:center;gap:5px;font-size:9.5px;color:var(--dim);font-family:Consolas,monospace;margin-top:5px}
.db-legend i{width:9px;height:2.5px;border-radius:2px;margin-left:9px}
.db-legend i:first-child{margin-left:0}
.db-legend i.k1{background:#4d9fff}.db-legend i.k2{background:#e0453a}
.db-chips{display:flex;flex-wrap:wrap;gap:5px}
.db-chips span{font-size:9.5px;font-family:Consolas,monospace;color:#9fd8bb;border:1px solid rgba(62,207,142,.28);background:rgba(62,207,142,.07);padding:2.5px 7px;border-radius:5px}
.db-mods .nm{flex:1;color:#8fb0dd}
.db-mods .st{flex:none;font-size:9px;padding:1px 6px;border-radius:4px}
.db-mods .st.ok{color:#3ecf8e;background:rgba(62,207,142,.1)}
.db-mods .ct{flex:none;width:46px;text-align:right;color:#c7d2e0}
.db-subs .row span{flex:1;color:#8fb0dd}
.db-subs .row b{color:#c7d2e0;font-weight:600}
.db-events{padding-bottom:8px}
.db-tbl-wrap{overflow-x:auto}
.db-tbl{width:100%;min-width:540px;border-collapse:collapse;font-family:Consolas,monospace;font-size:10px;color:var(--sub)}
.db-tbl th{text-align:left;font-weight:500;color:#3d5675;font-size:9px;letter-spacing:.4px;padding:0 6px 5px;border-bottom:1px solid rgba(255,255,255,.05)}
.db-tbl td{padding:4.5px 6px;border-bottom:1px solid rgba(255,255,255,.03);white-space:nowrap}
.db-tbl tr:last-child td{border-bottom:0}
.db-tbl .r{text-align:right}
.db-tbl .a-blk{color:#ff6b5e}.db-tbl .a-pass{color:#3ecf8e}.db-tbl .a-mon{color:#d9a441}
@media(max-width:960px){.db-3{grid-template-columns:1fr}.db-kpis{grid-template-columns:repeat(3,1fr)}.db-brand span{display:none}}
@media(max-width:560px){.db-kpis{grid-template-columns:repeat(2,1fr)}.db-top{flex-wrap:wrap;gap:8px}}

/* ============ PIPELINE ============ */
.pipe{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.pipeline{display:flex;align-items:stretch;gap:0;justify-content:center;flex-wrap:wrap;margin-bottom:34px}
.pnode{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px 20px;text-align:center;min-width:150px;flex:1;max-width:190px}
.pnode b{display:block;font-size:14.5px;margin-bottom:6px}
.pnode span{font-size:12px;color:var(--dim)}
.parrow{display:flex;align-items:center;color:var(--red);font-size:22px;padding:0 8px}
.pnode.hot{border-color:rgba(224,69,58,.6);background:rgba(224,69,58,.07)}
.code-box{background:#0b1018;border:1px solid var(--line);border-radius:12px;padding:22px 26px;font-family:Consolas,monospace;font-size:13px;color:#a8b6c8;overflow-x:auto;max-width:900px;margin:0 auto}
.code-box .c{color:#4f5d70}.code-box .k{color:var(--red2)}.code-box .g{color:var(--green)}.code-box .y{color:var(--gold)}

/* ============ COMPARE ============ */
.cmp{max-width:920px;margin:0 auto;border:1px solid var(--line);border-radius:14px;overflow:hidden;overflow-x:auto}
.cmp table{width:100%;border-collapse:collapse;font-size:14px;min-width:640px}
.cmp th{background:var(--card);padding:16px;text-align:left}
.cmp th.y{color:var(--gold)}
.cmp td{padding:14px 16px;border-top:1px solid var(--line);color:var(--sub)}
.cmp td:first-child{color:var(--txt);font-weight:600;width:22%}
.cmp .ok{color:var(--green)}.cmp .bad{color:var(--dim)}

/* ============ SCENES ============ */
.scene-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}
.scene{border:1px solid var(--line);border-radius:14px;padding:26px;background:linear-gradient(160deg,var(--card),var(--bg2));transition:.25s}
.scene:hover{border-color:rgba(224,69,58,.5);transform:translateY(-3px)}
.scene h3{font-size:16px;margin-bottom:8px}
.scene .li{font-size:13px;color:var(--sub);margin-top:6px;padding-left:16px;position:relative}
.scene .li::before{content:"·";position:absolute;left:2px;color:var(--red2);font-weight:700}

/* ============ FAQ ============ */
.faq{max-width:820px;margin:0 auto}
.qa{border:1px solid var(--line);border-radius:12px;margin-bottom:12px;background:var(--card);overflow:hidden}
.qa button{width:100%;background:none;border:0;color:var(--txt);font-size:15px;font-family:inherit;text-align:left;padding:18px 22px;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
.qa button::after{content:"+";color:var(--red2);font-size:20px;font-weight:300;transition:.2s}
.qa.open button::after{transform:rotate(45deg)}
.qa .ans{display:none;padding:0 22px 18px;font-size:14px;color:var(--sub)}
.qa.open .ans{display:block}

/* ============ PRICING ============ */
.price-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(266px,1fr));gap:20px;max-width:1180px;margin:0 auto}
.price{border:1px solid var(--line);border-radius:16px;padding:32px 28px;background:var(--card);display:flex;flex-direction:column}
.price.hot{border-color:var(--red);position:relative;box-shadow:0 0 40px rgba(224,69,58,.12)}
.price.hot::before{content:"最受欢迎";position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--red);font-size:11px;padding:3px 14px;border-radius:99px;font-weight:700}
.price h3{font-size:18px}
.price .pv{font-size:30px;font-weight:800;margin:10px 0 4px}
.price .pv small{font-size:13px;color:var(--dim);font-weight:400}
.price .pv .old{font-size:15px;color:var(--dim);text-decoration:line-through;margin-left:8px;font-weight:400}
.price .pv .note{display:block;font-size:12px;color:var(--gold);font-weight:400;margin-top:7px;letter-spacing:.2px}
.price ul{list-style:none;margin:18px 0 26px;flex:1}
.price li{font-size:13.5px;color:var(--sub);padding:7px 0;border-bottom:1px dashed var(--line)}
.price li::before{content:"✓";color:var(--green);margin-right:9px;font-weight:700}
.price .btn{text-align:center;display:block}

/* ============ CTA BANNER ============ */
.cta-banner{background:linear-gradient(120deg,rgba(224,69,58,.16),rgba(217,164,65,.08)),var(--card);border:1px solid rgba(224,69,58,.4);border-radius:18px;padding:52px 40px;text-align:center}
.cta-banner h2{font-size:28px;margin-bottom:12px}
.cta-banner p{color:var(--sub);font-size:15px;margin-bottom:28px}

/* ============ FEATURE DETAIL PAGES ============ */
.fdetail{display:grid;grid-template-columns:64px 1fr;gap:24px;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:34px;margin-bottom:22px}
.fdetail .fico{width:64px;height:64px;border-radius:14px;background:rgba(224,69,58,.12);display:flex;align-items:center;justify-content:center;font-size:30px}
.fdetail h3{font-size:20px;margin-bottom:4px}
.fdetail .fsub{font-size:12.5px;color:var(--dim);font-family:Consolas,monospace;margin-bottom:14px}
.fdetail p{font-size:14.5px;color:var(--sub);margin-bottom:12px}
.fdetail .pts{list-style:none;margin-top:8px}
.fdetail .pts li{font-size:14px;color:var(--sub);padding:7px 0;border-bottom:1px dashed var(--line)}
.fdetail .pts li::before{content:"◆";color:var(--red2);margin-right:10px;font-size:11px;vertical-align:2px}
.fdetail .pts li b{color:var(--txt)}
@media(max-width:640px){.fdetail{grid-template-columns:1fr}}

/* ============ DOCS ============ */
.docs-grid{display:grid;grid-template-columns:220px 1fr;gap:40px;align-items:start}
@media(max-width:880px){.docs-grid{grid-template-columns:1fr}}
.doc-nav{position:sticky;top:88px;border:1px solid var(--line);border-radius:12px;padding:16px;background:var(--card)}
.doc-nav a{display:block;font-size:13.5px;color:var(--sub);padding:7px 12px;border-radius:8px}
.doc-nav a:hover{color:var(--txt);background:rgba(255,255,255,.05)}
.doc-nav .dh{font-size:11px;color:var(--dim);letter-spacing:2px;padding:10px 12px 4px}
.doc-sec{margin-bottom:52px;scroll-margin-top:90px}
.doc-sec h2{font-size:23px;padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:18px}
.doc-sec h3{font-size:16px;margin:22px 0 10px;color:var(--gold)}
.doc-sec p{font-size:14.5px;color:var(--sub);margin-bottom:12px}
.doc-sec .code-box{margin:14px 0;font-size:13px}
.doc-sec table{width:100%;border-collapse:collapse;font-size:13.5px;margin:14px 0}
.doc-sec th{background:var(--card);padding:11px 14px;text-align:left;color:var(--txt)}
.doc-sec td{padding:10px 14px;border-top:1px solid var(--line);color:var(--sub)}
.doc-sec td code,.doc-sec p code{background:#0b1018;border:1px solid var(--line);border-radius:5px;padding:1px 7px;font-family:Consolas,monospace;font-size:12.5px;color:var(--gold)}
.tip{border-left:3px solid var(--gold);background:rgba(217,164,65,.06);border-radius:0 10px 10px 0;padding:13px 18px;font-size:13.5px;color:var(--sub);margin:14px 0}
.tip b{color:var(--gold)}

/* ============ DOWNLOAD ============ */
.dl-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:30px;margin-bottom:20px;display:grid;grid-template-columns:70px 1fr auto;gap:22px;align-items:center}
@media(max-width:640px){.dl-card{grid-template-columns:1fr}}
.dl-card .dico{width:64px;height:64px;border-radius:14px;background:rgba(224,69,58,.12);display:flex;align-items:center;justify-content:center;font-size:30px}
.dl-card h3{font-size:17px}
.dl-card p{font-size:13px;color:var(--sub)}
.ver-tag{display:inline-block;font-size:11px;color:var(--gold);border:1px solid rgba(217,164,65,.4);border-radius:5px;padding:1px 9px;font-family:Consolas,monospace;margin-left:8px;vertical-align:2px}
.steps{counter-reset:s;max-width:820px;margin:10px auto}
.step{position:relative;padding:0 0 30px 56px}
.step::before{counter-increment:s;content:counter(s);position:absolute;left:0;top:0;width:36px;height:36px;border-radius:50%;background:rgba(224,69,58,.14);border:1px solid var(--red);color:var(--red2);font-weight:700;display:flex;align-items:center;justify-content:center;font-family:Consolas,monospace}
.step:not(:last-child)::after{content:"";position:absolute;left:17.5px;top:40px;bottom:6px;width:1px;background:var(--line)}
.step h4{font-size:15.5px;margin-bottom:6px}
.step p{font-size:13.5px;color:var(--sub)}

/* ============ TIMELINE (about) ============ */
.tline{max-width:820px;margin:0 auto;position:relative;padding-left:30px}
.tline::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--red),var(--line))}
.tl{position:relative;padding:0 0 34px 24px}
.tl::before{content:"";position:absolute;left:-28px;top:8px;width:14px;height:14px;border-radius:50%;background:var(--bg);border:3px solid var(--red)}
.tl .tv{font-family:Consolas,monospace;color:var(--gold);font-size:13px}
.tl h4{font-size:16.5px;margin:4px 0 6px}
.tl p{font-size:13.5px;color:var(--sub)}

/* ============ FOOTER ============ */
footer{border-top:1px solid var(--line);background:var(--bg2);padding:56px 0 34px;margin-top:40px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:34px;margin-bottom:44px}
@media(max-width:820px){.foot-grid{grid-template-columns:1fr 1fr}}
.foot-grid h4{font-size:14px;margin-bottom:14px;color:var(--txt)}
.foot-grid a,.foot-grid p{display:block;font-size:13px;color:var(--dim);margin-bottom:9px}
.foot-grid a:hover{color:var(--red2)}
.foot-brand .logo{margin-bottom:14px}
.copyright{border-top:1px solid var(--line);padding-top:24px;text-align:center;font-size:12.5px;color:var(--dim)}
.copyright .red{color:var(--red2)}
.copyright .icp{color:var(--dim);text-decoration:none;border-bottom:1px dotted rgba(120,150,190,.35)}
.copyright .icp:hover{color:var(--gold);border-bottom-style:solid}

/* ============ FLOAT ============ */
.float-qq{position:fixed;right:22px;bottom:26px;z-index:90;background:linear-gradient(135deg,var(--red),#b93028);color:#fff;border-radius:12px;padding:12px 18px;font-size:13.5px;font-weight:600;box-shadow:0 8px 24px rgba(224,69,58,.4);display:flex;align-items:center;gap:9px;transition:.2s}
.float-qq:hover{transform:translateY(-2px)}

/* ============ MOBILE POLISH ============ */
@media(max-width:880px){
  /* 文档页：表格内容宽（长 code 令牌）会撑破 1fr 栅格 → 表格改为块级内部横向滚动 */
  .doc-sec table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}
  .doc-sec td,.doc-sec th{overflow-wrap:anywhere}
  .doc-sec td code,.doc-sec p code,.tip code{overflow-wrap:anywhere}
  .doc-nav{position:static}
}
@media(max-width:640px){
  .hero h1{font-size:clamp(30px,9.5vw,38px);letter-spacing:1px}
  .hero{padding:120px 0 64px}
  .hero .pitch{font-size:15.5px;line-height:1.95;margin:24px auto 18px;max-width:92%}
  .hero-chips span{font-size:12px;padding:6px 14px}
  .hero .sub{font-size:12.5px;line-height:1.9}
  .sec-head h2{font-size:26px}
  .float-qq{right:14px;bottom:16px;padding:10px 14px;font-size:12.5px;border-radius:10px}
  .term-body{padding:16px;font-size:12px;min-height:200px}
  .wrap{padding:0 18px}
  .nav-in{padding:0 18px}
  .stats-in{padding:22px 18px;grid-template-columns:repeat(2,1fr)}
}

/* reveal on scroll */
.rv{opacity:0;transform:translateY(22px);transition:.6s cubic-bezier(.2,.7,.3,1)}
.rv.vis{opacity:1;transform:none}

/* ============ 首屏定位句 / 转化入口 ============ */
.hero .pitch b{color:var(--txt);font-weight:600}
.hero .sub b{color:var(--sub);font-weight:600}
.cta-link{align-self:center;font-size:13.5px;color:var(--dim);text-decoration:none;border-bottom:1px dashed rgba(255,255,255,.18);padding-bottom:2px;transition:.2s}
.cta-link:hover{color:var(--gold);border-color:var(--gold)}

/* ============ 两类读者 ============ */
.paths{display:grid;grid-template-columns:1fr 1fr;gap:20px;max-width:1020px;margin:0 auto}
.path-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:26px;display:flex;flex-direction:column}
.path-card .tag{align-self:flex-start;font-size:11.5px;color:var(--gold);border:1px solid rgba(217,164,65,.35);border-radius:99px;padding:3px 12px;margin-bottom:14px;letter-spacing:.5px}
.path-card h3{font-size:19px;margin-bottom:15px}
.path-card ul{list-style:none;padding:0;margin:0 0 22px;display:flex;flex-direction:column;gap:11px}
.path-card li{font-size:13.5px;color:var(--sub);line-height:1.8;padding-left:16px;position:relative}
.path-card li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--red2);opacity:.65}
.path-card li b{color:var(--txt);font-weight:600}
.path-card code{font-family:Consolas,monospace;font-size:12px;color:var(--gold);background:rgba(217,164,65,.08);padding:1px 5px;border-radius:4px}
.path-card .btn{margin-top:auto;align-self:flex-start}

/* ============ 信任背书 ============ */
.trust-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(238px,1fr));gap:16px;margin-bottom:18px}
.trust-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px}
.trust-card h3{font-size:15px;margin-bottom:10px}
.trust-card p{font-size:13px;color:var(--dim);line-height:1.9}
.trust-fit{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px;text-align:center}
.trust-fit h3{font-size:15px;margin-bottom:14px}
.fit-row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:12px}
.fit-row span{font-size:13px;color:var(--sub);border:1px solid var(--line);border-radius:99px;padding:6px 16px;background:rgba(255,255,255,.02)}
.fit-note{font-size:12px;color:var(--dim);line-height:1.8}

@media(max-width:820px){.paths{grid-template-columns:1fr}.path-card .btn{align-self:stretch;text-align:center}}
@media(max-width:640px){
  .hero .pitch{font-size:15px;line-height:1.9;margin-top:18px}
  .path-card{padding:20px}
  .path-card h3{font-size:17px}
  .trust-fit{text-align:left}
  .fit-row{justify-content:flex-start}
}

/* ============ 快速上手 ============ */
.qs-steps{display:flex;flex-direction:column;gap:16px;max-width:820px;margin:0 auto}
.qs-step{display:flex;gap:20px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:24px;align-items:flex-start}
.qs-n{flex:none;width:44px;height:44px;border-radius:50%;border:1px solid var(--red);color:var(--red2);display:flex;align-items:center;justify-content:center;font-size:19px;font-weight:700;font-family:Consolas,monospace;background:rgba(224,69,58,.07)}
.qs-body{flex:1;min-width:0}
.qs-body h3{font-size:17px;margin-bottom:8px}
.qs-body p{font-size:13.5px;color:var(--sub);line-height:1.8;margin-bottom:12px}
.qs-body code{font-family:Consolas,monospace;font-size:12.5px;color:var(--gold);background:rgba(217,164,65,.08);padding:1px 5px;border-radius:4px}
.qs-code{background:#0b1018;border:1px solid var(--line);border-radius:10px;padding:14px 18px;font-family:Consolas,monospace;font-size:12.5px;line-height:2;color:#a8b6c8;overflow-x:auto;white-space:pre}
.qs-code .p{color:var(--gold)}
.qs-code .g{color:var(--green)}
.qs-code .c{color:#4f5d70}
.qs-code .k{color:#ff6b5e}
.qs-code .y{color:var(--gold)}
.qs-more{text-align:center;margin-top:22px;font-size:13.5px;color:var(--dim)}
.qs-more a{color:var(--gold);text-decoration:none;border-bottom:1px dashed rgba(217,164,65,.4)}
.qs-more a:hover{border-bottom-style:solid}
@media(max-width:640px){.qs-step{padding:18px;gap:14px;flex-direction:column;align-items:stretch}.qs-body{width:100%}.qs-n{width:38px;height:38px;font-size:16px}.qs-code{font-size:11.5px;padding:12px 14px;max-width:100%}}

/* ============ 大屏演示：横滚与备注 ============ */
.dash-scroll{position:relative}
.dash-hint{display:none}
.db-note{margin-top:14px;font-size:11.5px;color:var(--dim);text-align:center;line-height:1.9;letter-spacing:.2px}
.db-more{margin-top:6px;font-size:12px;text-align:center;letter-spacing:.3px}
.db-more a{color:var(--gold);text-decoration:none;border-bottom:1px dashed rgba(217,164,65,.4)}
.db-more a:hover{border-bottom-style:solid}
@media(max-width:1080px){
  .dash-hint{display:block;font-size:11.5px;color:var(--dim);font-family:Consolas,monospace;margin-bottom:8px;text-align:center;letter-spacing:.5px}
  .dash-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:6px}
  .dash-scroll .dash{min-width:860px}
}
@media(max-width:640px){
  .db-note{text-align:left;font-size:11px}
  .db-more{text-align:left;font-size:11.5px}
  .dash-scroll .dash{min-width:820px}
}

/* ============ 面包屑（专题页） ============ */
.bc{font-size:12px;color:var(--dim);letter-spacing:.3px;margin-bottom:20px;font-family:Consolas,monospace}
.bc a{color:var(--sub);text-decoration:none;border-bottom:1px dotted rgba(217,164,65,.35)}
.bc a:hover{color:var(--gold);border-bottom-style:solid}
@media(max-width:640px){.bc{font-size:11px;line-height:1.9}}