/* X-TuneEditor marketing site — palette matches the editor (ink / neon) */
:root{
  --ink-950:#03050b;--ink-900:#060a14;--ink-850:#0a1020;--ink-800:#0d1528;--ink-700:#152039;--ink-600:#1d2b4b;--ink-500:#2a3b63;
  --cyan:#22d3ee;--blue:#3b82f6;--violet:#8b5cf6;--amber:#fbbf24;--pink:#e879f9;--green:#34d399;--red:#fb7185;
  --text:#d6e2f5;--muted:#8a9cc0;--white:#f4f8ff;
  --line:rgba(90,130,200,.18);--line2:rgba(90,130,200,.28);
  --r:14px;--maxw:1180px;
  --font:Inter,"Segoe UI",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --mono:"JetBrains Mono",Consolas,ui-monospace,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;background:var(--ink-950);color:var(--text);font:16px/1.6 var(--font);-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img,svg{display:block}
h1,h2,h3,h4{color:var(--white);margin:0;line-height:1.2;letter-spacing:-.01em}
p{margin:0}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.narrow{max-width:820px}
.muted{color:var(--muted)}
.ic{width:18px;height:18px;flex:none;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
symbol{overflow:visible}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;height:40px;padding:0 1.05rem;border-radius:10px;font-weight:600;font-size:14.5px;border:1px solid var(--line2);background:rgba(13,21,40,.6);color:#d7e4fa;transition:transform .15s,box-shadow .2s,border-color .2s,background .2s;white-space:nowrap;cursor:pointer}
.btn:hover{transform:translateY(-1px);border-color:rgba(34,211,238,.5)}
.btn-lg{height:50px;padding:0 1.4rem;font-size:15.5px;border-radius:12px}
.btn-block{width:100%}
.btn-acc{border-color:rgba(34,211,238,.6);background:linear-gradient(180deg,rgba(34,211,238,.28),rgba(34,211,238,.1));color:#eafcff;box-shadow:0 0 0 1px rgba(34,211,238,.15),0 8px 30px -10px rgba(34,211,238,.55)}
.btn-acc:hover{box-shadow:0 0 0 1px rgba(34,211,238,.35),0 10px 34px -8px rgba(34,211,238,.7)}
.btn-violet{border-color:rgba(139,92,246,.6);background:linear-gradient(180deg,rgba(139,92,246,.3),rgba(139,92,246,.1));color:#f1ebff;box-shadow:0 8px 30px -10px rgba(139,92,246,.6)}
.btn-violet:hover{border-color:rgba(167,139,250,.8)}
.btn-ghost{background:rgba(10,16,32,.5)}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(3,5,11,.72);backdrop-filter:saturate(140%) blur(14px);-webkit-backdrop-filter:saturate(140%) blur(14px);border-bottom:1px solid transparent;transition:border-color .2s,background .2s}
.nav.scrolled{border-bottom-color:var(--line);background:rgba(3,5,11,.88)}
.nav-in{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;color:var(--white);letter-spacing:.2px}
.brand img{filter:drop-shadow(0 0 8px rgba(34,211,238,.45))}
.brand b{color:var(--cyan);font-weight:700}
.nav-links{display:flex;gap:4px;margin-left:12px}
.nav-links a{padding:8px 12px;border-radius:8px;font-size:14.5px;color:#aebfdd;transition:color .15s,background .15s}
.nav-links a:hover{color:#fff;background:rgba(34,211,238,.08)}
.nav-act{display:flex;align-items:center;gap:10px;margin-left:auto}
.lang{display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 10px;border-radius:9px;border:1px solid var(--line);background:transparent;color:#aebfdd;font:600 13.5px var(--font);cursor:pointer}
.lang:hover{color:#fff;border-color:var(--line2)}
.menu{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:transparent;color:#cfe0ff;align-items:center;justify-content:center;cursor:pointer}
.menu .ic{width:20px;height:20px}

/* hero */
.hero{position:relative;padding:72px 0 64px;overflow:hidden}
.hero-bg{position:absolute;inset:0;pointer-events:none;
  background:
   radial-gradient(700px 380px at 15% -5%,rgba(34,211,238,.17),transparent 70%),
   radial-gradient(600px 420px at 95% 20%,rgba(139,92,246,.16),transparent 70%),
   radial-gradient(500px 300px at 60% 110%,rgba(59,130,246,.12),transparent 70%)}
.hero-bg::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(90,130,200,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(90,130,200,.07) 1px,transparent 1px);background-size:44px 44px;-webkit-mask-image:radial-gradient(ellipse 80% 70% at 50% 30%,#000 30%,transparent 80%);mask-image:radial-gradient(ellipse 80% 70% at 50% 30%,#000 30%,transparent 80%)}
.hero-in{position:relative;display:grid;grid-template-columns:1fr 1.08fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:99px;border:1px solid rgba(34,211,238,.3);background:rgba(34,211,238,.07);color:#a5f3fc;font-size:13px;font-weight:600;letter-spacing:.2px}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 10px var(--green)}
.hero h1{font-size:clamp(44px,6.4vw,76px);font-weight:800;margin:20px 0 14px;letter-spacing:-.025em}
.grad{background:linear-gradient(100deg,#cffafe 0%,var(--cyan) 40%,var(--violet) 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:clamp(19px,2.1vw,23px);color:#e6eeff;font-weight:600;line-height:1.4;max-width:560px}
.hero .sub{margin-top:14px;color:var(--muted);max-width:540px;font-size:16px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-points{list-style:none;padding:0;margin:30px 0 0;display:flex;flex-wrap:wrap;gap:10px 22px;color:#b6c6e3;font-size:14px}
.hero-points li{display:flex;align-items:center;gap:8px}
.hero-points .ic{color:var(--cyan);width:17px;height:17px}

/* editor mock */
.mock{border-radius:16px;border:1px solid var(--line2);background:linear-gradient(180deg,rgba(13,21,40,.95),rgba(6,10,20,.97));box-shadow:0 30px 80px -20px rgba(0,0,0,.9),0 0 0 1px rgba(34,211,238,.08),0 0 60px -20px rgba(34,211,238,.35);overflow:hidden;font-size:12px;transform:perspective(1600px) rotateY(-4deg) rotateX(2deg);transition:transform .5s}
.mock:hover{transform:none}
.mock-bar{display:flex;align-items:center;gap:7px;height:34px;padding:0 12px;border-bottom:1px solid var(--line);background:#060a14;color:#7f93b8;font-size:11.5px}
.mock-bar i{width:10px;height:10px;border-radius:50%;background:#1d2b4b}
.mock-bar i:nth-child(1){background:#fb7185}.mock-bar i:nth-child(2){background:#fbbf24}.mock-bar i:nth-child(3){background:#34d399}
.mock-bar span{margin-left:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mock-tools{display:flex;gap:6px;padding:8px 12px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.chip{padding:3px 9px;border-radius:7px;border:1px solid var(--line2);background:rgba(13,21,40,.7);color:#c8d6ee;font-size:11px;font-weight:500}
.chip-acc{border-color:rgba(34,211,238,.55);color:#e6fbff;background:rgba(34,211,238,.14)}
.chip-v{border-color:rgba(139,92,246,.55);color:#ede9fe;background:rgba(139,92,246,.16)}
.mock-body{display:grid;grid-template-columns:150px 1fr;min-height:300px}
.mock-tree{border-right:1px solid var(--line);padding:8px 0;color:#9fb3d6;font-size:11.5px}
.t-h{padding:4px 12px;font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:#5d7096}
.t-gap{margin-top:8px}
.t-r{display:flex;align-items:center;gap:6px;padding:4px 12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.t-2{padding-left:22px}.t-3{padding-left:32px;color:#67e8f9}
.t-r.on{background:linear-gradient(90deg,rgba(34,211,238,.18),rgba(34,211,238,.02));box-shadow:inset 2px 0 0 var(--cyan);color:#fff}
.bd{display:inline-grid;place-items:center;width:15px;height:15px;border-radius:4px;font-size:9px;font-weight:700;border:1px solid}
.bd-m{color:#67e8f9;border-color:rgba(34,211,238,.45);background:rgba(34,211,238,.1)}
.bd-c{color:#a5b4fc;border-color:rgba(129,140,248,.45);background:rgba(129,140,248,.1)}
.bd-v{color:#6ee7b7;border-color:rgba(52,211,153,.45);background:rgba(52,211,153,.1)}
.mock-map,.mock-stage{padding:10px 12px;min-width:0}
/* hero showcase carousel */
.mock-tools{align-items:center}
.chip{transition:border-color .25s,background .25s,color .25s,box-shadow .25s}
.chip.press{border-color:rgba(34,211,238,.9);background:rgba(34,211,238,.32);box-shadow:0 0 14px -2px rgba(34,211,238,.7)}
.views{margin-left:auto;display:inline-flex;padding:2px;gap:2px;border-radius:8px;border:1px solid var(--line);background:rgba(3,6,14,.6)}
.vw{padding:2px 8px;border-radius:6px;font-size:10.5px;font-weight:600;color:#6f84ab;transition:color .3s,background .3s}
.vw.on{color:#e6fbff;background:rgba(34,211,238,.18);box-shadow:inset 0 0 0 1px rgba(34,211,238,.4)}
.mock-tree .t-r[data-f]{transition:background .35s,color .35s,box-shadow .35s}
.mock-stage{position:relative;height:266px}
.slide{position:absolute;inset:10px 12px;opacity:0;visibility:hidden;transform:scale(.985);transition:opacity .7s ease,transform .9s cubic-bezier(.2,.7,.2,1),visibility 0s .7s}
.slide.on{opacity:1;visibility:visible;transform:none;transition:opacity .7s ease,transform .9s cubic-bezier(.2,.7,.2,1),visibility 0s}
.no-js .slide:first-child,.mock:not(.live) .slide:first-child{opacity:1;visibility:visible;transform:none}
.surf,.curve{display:block;width:100%;height:calc(100% - 28px)}
.surf .fl{stroke:rgba(90,130,200,.22);stroke-width:.7;fill:none}
.surf .qd{stroke:rgba(3,6,14,.55);stroke-width:.6;stroke-linejoin:round}
.surf .lb,.curve .tk{fill:#6b7fa6;font:600 10px var(--mono)}
.curve .gl{stroke:rgba(90,130,200,.14);stroke-width:1}
.curve .ori{fill:none;stroke:#6b7fa6;stroke-width:1.5;stroke-dasharray:4 4}
.curve .mod{fill:none;stroke:url(#cg);stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round;filter:drop-shadow(0 0 6px rgba(34,211,238,.55))}
.curve .ar{fill:url(#ca);opacity:.9}
.curve .pt{fill:#0a1020;stroke:#6b7fa6;stroke-width:1.5}
.curve .pt.up{stroke:#22d3ee;fill:#062a33}
.curve .tip rect{fill:rgba(6,10,20,.92);stroke:rgba(34,211,238,.6)}
.curve .tip text{fill:#e6fbff;font:600 10.5px var(--mono)}
.curve.draw .mod{stroke-dasharray:1;stroke-dashoffset:1;animation:xteDraw 1.4s .25s cubic-bezier(.4,.1,.2,1) forwards}
.curve.draw .ar,.curve.draw .pt.up,.curve.draw .tip{opacity:0;animation:xteFade .6s 1.3s ease forwards}
@keyframes xteDraw{to{stroke-dashoffset:0}}
@keyframes xteFade{to{opacity:1}}
.diff-lg{display:inline-flex;align-items:center;gap:5px}
.diff-lg i{display:inline-block;width:9px;height:9px;border-radius:2px}
.diff-lg .lg-up{background:rgba(52,211,153,.25);box-shadow:inset 0 0 0 1.5px #34d399}
.diff-lg .lg-ori{margin-left:4px;border:1px dashed #6b7fa6}
.map .c{transition:background .35s ease}
.map-diff .ds{box-shadow:inset 0 0 0 1px rgba(34,211,238,.45)}
.map-diff .chg{box-shadow:inset 0 0 0 1.5px #34d399;font-weight:700}
.map-diff .flash{animation:xteFlash .42s ease}
@keyframes xteFlash{0%{filter:brightness(1.9);transform:scale(1.12)}100%{filter:none;transform:none}}
.mock-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;height:38px;padding:0 14px;border-top:1px solid var(--line);background:rgba(6,10,20,.85);font-size:12px}
.cap{position:relative;display:flex;align-items:center;gap:10px;min-width:0;flex:1;height:100%}
.cap b{font:700 11px var(--mono);color:var(--cyan);letter-spacing:.06em}
.cap-t{position:absolute;left:30px;top:50%;transform:translate(6px,-50%);opacity:0;white-space:nowrap;color:#c9d6ee;font-weight:600;letter-spacing:.02em;transition:opacity .5s,transform .5s}
.cap-t.on{opacity:1;transform:translate(0,-50%)}
.dots{display:flex;gap:6px}
.dots button{position:relative;width:22px;height:4px;padding:0;border:0;border-radius:99px;background:rgba(90,130,200,.25);cursor:pointer;overflow:hidden;transition:width .4s,background .3s}
.dots button::after{content:"";position:absolute;inset:0;width:0;background:linear-gradient(90deg,var(--cyan),var(--violet));border-radius:inherit}
.dots button.on{width:40px}
.dots button.on::after{animation:xteProg 5.2s linear forwards}
.dots button[aria-current="true"]:not(.on)::after,.dots button:focus-visible::after{width:100%}
.dots button:hover{background:rgba(90,130,200,.45)}
.dots button:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
.mock:hover .dots button.on::after,.mock:focus-within .dots button.on::after{animation-play-state:paused}
@keyframes xteProg{to{width:100%}}
.map-title{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:8px;color:#fff;font-weight:600;font-size:12.5px}
.map-title em{font-style:normal;color:#6b7fa6;font-weight:400;font-size:11px}
.map{display:grid;gap:2px;font-family:var(--mono);font-size:10px}
.map .c{height:20px;line-height:20px;text-align:center;border-radius:3px;color:#f2f7ff;text-shadow:0 1px 2px rgba(0,0,0,.6);overflow:hidden}
.map .ax{color:#a9c8f2;background:rgba(34,60,110,.28)}
.map .ax0{background:transparent}
.map .sel{outline:1.5px solid var(--cyan);outline-offset:-1px;box-shadow:0 0 10px rgba(34,211,238,.6);position:relative;z-index:1}

/* strip */
.strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(6,10,20,.6)}
.strip-in{display:grid;grid-template-columns:repeat(4,1fr)}
.strip-in>div{padding:22px 18px;display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line)}
.strip-in>div:first-child{border-left:0}
.strip b{color:var(--white);font-size:20px;font-weight:700}
.strip span{color:var(--muted);font-size:13.5px}

/* sections */
.sec{padding:96px 0}
.sec-alt{background:linear-gradient(180deg,rgba(10,16,32,.55),rgba(6,10,20,.3));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{text-align:center;max-width:720px;margin:0 auto 52px}
.sec-head h2,.split h2{font-size:clamp(28px,3.6vw,40px);font-weight:750;margin:12px 0 14px}
.sec-head p{color:var(--muted);font-size:17px}
.kicker{display:inline-block;color:var(--cyan);font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase}
.kicker-v{color:#c4b5fd}

/* cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.cards-4{grid-template-columns:repeat(4,1fr)}
.card{position:relative;padding:26px 24px;border-radius:var(--r);border:1px solid var(--line);background:linear-gradient(180deg,rgba(13,21,40,.85),rgba(10,16,32,.6));transition:border-color .2s,transform .2s,box-shadow .2s}
.card:hover{border-color:rgba(34,211,238,.35);transform:translateY(-3px);box-shadow:0 16px 40px -20px rgba(34,211,238,.35)}
.card h3{font-size:17.5px;font-weight:650;margin:16px 0 8px;display:flex;align-items:center;flex-wrap:wrap;gap:8px}
.card p{color:var(--muted);font-size:14.5px}
.ico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;color:var(--cyan);background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.28);box-shadow:0 0 18px -6px rgba(34,211,238,.6)}
.ico svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.ico-v{color:#c4b5fd;background:rgba(139,92,246,.12);border-color:rgba(139,92,246,.35);box-shadow:0 0 18px -6px rgba(139,92,246,.7)}
.card-hi{border-color:rgba(139,92,246,.35);background:linear-gradient(180deg,rgba(32,24,64,.55),rgba(10,16,32,.6))}
.card-hi:hover{border-color:rgba(167,139,250,.6);box-shadow:0 16px 40px -20px rgba(139,92,246,.5)}
.tag{font-style:normal;font-size:11px;font-weight:700;padding:2px 8px;border-radius:99px;color:#ddd6fe;background:rgba(139,92,246,.2);border:1px solid rgba(139,92,246,.45);letter-spacing:.02em}

/* split blocks */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.split+.split{margin-top:96px}
.split .muted{font-size:16.5px}
.split .btn{margin-top:26px}
.ticks{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:12px}
.ticks li{display:flex;gap:10px;align-items:flex-start;color:#c9d6ee}
.ticks .ic{color:var(--green);margin-top:3px}
.lib-panel,.smart{border-radius:16px;border:1px solid var(--line2);background:linear-gradient(180deg,rgba(13,21,40,.95),rgba(6,10,20,.95));box-shadow:0 24px 60px -24px rgba(0,0,0,.9),0 0 50px -24px rgba(34,211,238,.4);padding:18px}
.lib-search{display:flex;align-items:center;gap:10px;height:42px;padding:0 12px;border-radius:10px;border:1px solid rgba(34,211,238,.35);background:rgba(3,6,14,.7);font-family:var(--mono);font-size:13px;color:#cfe0ff}
.lib-search .ic{color:var(--cyan)}
.lib-search em{margin-left:auto;font-style:normal;font-family:var(--font);font-size:12px;font-weight:700;color:#6ee7b7;padding:2px 8px;border-radius:99px;background:rgba(52,211,153,.12);border:1px solid rgba(52,211,153,.4)}
.lib-tree{margin-top:14px;font-size:14px}
.lt{padding:7px 10px;border-radius:8px;color:#9fb3d6}
.lt.b{color:#e6eeff;font-weight:600}
.lt.b::before{content:"▸ ";color:#5d7096}
.lt.b.open::before{content:"▾ "}
.lt.m{padding-left:28px}
.lt.e{padding-left:44px;font-family:var(--mono);font-size:12.5px}
.lt.on{background:linear-gradient(90deg,rgba(34,211,238,.18),rgba(34,211,238,.02));box-shadow:inset 2px 0 0 var(--cyan);color:#fff}
.lt.on i{font-style:normal;color:var(--green);margin-left:6px}
.smart{box-shadow:0 24px 60px -24px rgba(0,0,0,.9),0 0 50px -20px rgba(139,92,246,.5)}
.smart-h{display:flex;align-items:center;gap:8px;font-weight:700;color:#ede9fe}
.smart-h .ic{color:#c4b5fd}
.smart-row{display:flex;justify-content:space-between;margin:14px 0;padding:10px 12px;border-radius:10px;background:rgba(3,6,14,.6);border:1px solid var(--line);font-size:14px;color:var(--muted)}
.smart-row b{color:#fff;font-weight:600}
.bars{display:grid;gap:12px}
.bars div{display:grid;grid-template-columns:120px 1fr 52px;align-items:center;gap:12px;font-size:13.5px}
.bars label{color:#c9d6ee}
.bars i{display:block;height:8px;border-radius:99px;background:rgba(90,130,200,.15);position:relative;overflow:hidden}
.bars i::after{content:"";position:absolute;inset:0;width:var(--w);border-radius:99px;background:linear-gradient(90deg,var(--cyan),var(--violet))}
.bars em{font-style:normal;text-align:right;font-family:var(--mono);color:#a5f3fc;font-size:12.5px}
.smart-f{margin-top:16px;padding-top:12px;border-top:1px dashed var(--line2);color:#c4b5fd;font-size:13px;text-align:center}

/* steps */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:18px;position:relative}
.steps::before{content:"";position:absolute;top:32px;left:10%;right:10%;height:2px;background:linear-gradient(90deg,transparent,rgba(34,211,238,.45),rgba(139,92,246,.45),transparent)}
.steps li{position:relative;text-align:center;padding:0 6px}
.st-ico{position:relative;width:64px;height:64px;margin:0 auto 18px;border-radius:18px;display:grid;place-items:center;background:var(--ink-850);border:1px solid rgba(34,211,238,.35);color:var(--cyan);box-shadow:0 0 0 6px var(--ink-950),0 0 24px -6px rgba(34,211,238,.6)}
.st-ico svg{width:26px;height:26px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.st-ico b{position:absolute;top:-8px;right:-8px;width:24px;height:24px;border-radius:50%;display:grid;place-items:center;background:var(--cyan);color:#03131a;font-size:12px;font-weight:800}
.steps h3{font-size:16.5px;margin-bottom:6px}
.steps p{color:var(--muted);font-size:14px}

/* pricing */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch}
.plan{position:relative;display:flex;flex-direction:column;padding:30px 26px;border-radius:18px;border:1px solid var(--line);background:linear-gradient(180deg,rgba(13,21,40,.9),rgba(10,16,32,.6))}
.plan-hi{border-color:rgba(139,92,246,.55);background:linear-gradient(180deg,rgba(36,26,72,.7),rgba(10,16,32,.7));box-shadow:0 0 0 1px rgba(139,92,246,.2),0 24px 60px -24px rgba(139,92,246,.55)}
.plan h3{font-size:20px}
.plan-d{color:var(--muted);font-size:14.5px;margin-top:6px;min-height:44px}
.price{display:flex;align-items:baseline;gap:8px;margin:18px 0 22px}
.price b{font-size:44px;font-weight:800;color:var(--white);letter-spacing:-.02em}
.price span{color:var(--muted);font-size:15px}
.plan ul{list-style:none;padding:0;margin:0 0 26px;display:grid;gap:12px;flex:1}
.plan li{display:flex;gap:10px;align-items:center;font-size:14.5px;color:#c9d6ee}
.plan li .ok{color:var(--green)}
.plan li .ok.v{color:#c4b5fd}
.plan li b{color:#ede9fe}
.plan li.no{color:#5d7096;text-decoration:line-through;text-decoration-color:rgba(93,112,150,.6)}
.plan li.no .ic{color:#5d7096}
.ribbon{position:absolute;top:-12px;right:22px;padding:4px 12px;border-radius:99px;font-size:12px;font-weight:700;color:#fff;background:linear-gradient(90deg,var(--violet),#a78bfa);box-shadow:0 6px 20px -6px rgba(139,92,246,.8)}
.ribbon-c{background:linear-gradient(90deg,#0891b2,var(--cyan));color:#03131a;box-shadow:0 6px 20px -6px rgba(34,211,238,.7)}
.cmp-wrap{margin-top:44px;border:1px solid var(--line);border-radius:16px;overflow-x:auto;background:rgba(6,10,20,.6)}
.cmp{width:100%;border-collapse:collapse;min-width:620px;font-size:14.5px}
.cmp th,.cmp td{padding:14px 18px;text-align:center;border-bottom:1px solid var(--line)}
.cmp th:first-child,.cmp td:first-child{text-align:left;color:#c9d6ee}
.cmp thead th{color:var(--white);font-weight:700;background:rgba(13,21,40,.8)}
.cmp tbody tr:last-child td{border-bottom:0}
.cmp tbody tr:hover td{background:rgba(34,211,238,.04)}
.cmp td{color:var(--green)}
.cmp tr:nth-child(-n+2) td{color:var(--white);font-weight:600}
.cmp .hi{background:rgba(139,92,246,.08)}
.cmp thead .hi{color:#ddd6fe;background:rgba(139,92,246,.18)}
.cmp .v{color:#c4b5fd;font-weight:700}
.cmp .dim{color:#3d4d70}
.note{text-align:center;color:var(--muted);font-size:14px;margin-top:20px}

/* faq */
details{border:1px solid var(--line);border-radius:12px;background:rgba(13,21,40,.6);margin-bottom:12px;transition:border-color .2s}
details[open]{border-color:rgba(34,211,238,.35)}
summary{list-style:none;cursor:pointer;padding:18px 52px 18px 20px;font-weight:600;color:#e6eeff;position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:22px;font-weight:400;color:var(--cyan);transition:transform .2s}
details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
details p{padding:0 20px 18px;color:var(--muted)}

/* download + contact */
.cta-band{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;padding:44px 44px;border-radius:22px;border:1px solid rgba(34,211,238,.3);background:radial-gradient(500px 220px at 0% 0%,rgba(34,211,238,.18),transparent 70%),radial-gradient(500px 240px at 100% 100%,rgba(139,92,246,.2),transparent 70%),linear-gradient(180deg,#0d1528,#0a1020);box-shadow:0 30px 80px -30px rgba(34,211,238,.35)}
.cta-band h2{font-size:clamp(26px,3.2vw,36px)}
.cta-band p{color:#b6c6e3;margin-top:8px}
.cta-band .cta-row{margin-top:0}
.dl-meta{display:flex;gap:10px;font-size:13px;color:var(--muted)!important}
.dl-meta #dlVer:not(:empty){color:#a5f3fc;font-family:var(--mono)}
.contact{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;margin-top:24px;padding:28px 32px;border-radius:18px;border:1px solid var(--line);background:rgba(10,16,32,.6)}
.contact h3{font-size:20px;margin-bottom:6px}
.contact .muted{max-width:560px;font-size:15px}
.contact-links{display:flex;gap:10px;flex-wrap:wrap}
.soc-btn{display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 14px;border-radius:10px;border:1px solid var(--line2);background:rgba(13,21,40,.7);font-weight:600;font-size:14px;color:#d7e4fa;transition:border-color .2s,color .2s}
.soc-btn:hover{border-color:rgba(34,211,238,.5);color:#fff}

/* footer */
.foot{border-top:1px solid var(--line);background:var(--ink-900);padding:52px 0 0}
.foot-in{display:grid;grid-template-columns:1.4fr 1fr auto;gap:40px;align-items:start}
.foot-brand p{color:var(--muted);font-size:14px;margin-top:12px;max-width:340px}
.foot-cols{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.foot-cols h4{font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:#7f93b8;margin-bottom:12px}
.foot-cols a{display:block;color:#b6c6e3;font-size:14.5px;padding:4px 0}
.foot-cols a:hover{color:var(--cyan)}
.socials{display:flex;gap:10px}
.socials a{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;border:1px solid var(--line2);background:rgba(13,21,40,.7);color:#b6c6e3;transition:color .2s,border-color .2s,box-shadow .2s,transform .2s}
.socials a:hover{color:var(--cyan);border-color:rgba(34,211,238,.5);box-shadow:0 0 18px -4px rgba(34,211,238,.5);transform:translateY(-2px)}
.socials svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.foot-bot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:40px;padding-top:20px;padding-bottom:28px;border-top:1px solid var(--line);font-size:13px;color:#7f93b8}

/* reveal */
.js .rv{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.js .rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.js .rv{opacity:1;transform:none;transition:none}.mock{transform:none}.dots button.on::after{animation:none;width:100%}.slide,.slide.on{transition:none}.curve.draw .mod,.curve.draw .ar,.curve.draw .pt.up,.curve.draw .tip{animation:none;opacity:1;stroke-dashoffset:0}}

/* zh tweaks */
html[lang="zh-CN"] body{letter-spacing:.01em}
html[lang="zh-CN"] .kicker{letter-spacing:.08em}

/* responsive */
@media (max-width:1080px){
  .nav-links{display:none}
  .menu{display:inline-flex}
  .nav-links.open{display:flex;flex-direction:column;position:absolute;top:68px;left:0;right:0;margin:0;padding:10px 16px 16px;background:rgba(3,5,11,.97);border-bottom:1px solid var(--line)}
  .nav-links.open a{padding:12px}
  .cards-4{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:960px){
  .hero{padding:48px 0 48px}
  .hero-in{grid-template-columns:1fr;gap:40px}
  .mock{transform:none}
  .cards{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:36px}
  .split-rev>div:first-child{order:2}
  .steps{grid-template-columns:1fr;gap:14px;max-width:520px;margin:0 auto}
  .steps::before{top:0;bottom:0;left:31px;right:auto;width:2px;height:auto;background:linear-gradient(180deg,rgba(34,211,238,.45),rgba(139,92,246,.45))}
  .steps li{display:grid;grid-template-columns:64px 1fr;column-gap:18px;text-align:left;padding:0}
  .steps .st-ico{grid-row:span 2;margin:0}
  .steps h3{align-self:end;margin:6px 0 2px}
  .plans{grid-template-columns:1fr;max-width:480px;margin:0 auto}
  .plan-d{min-height:0}
  .foot-in{grid-template-columns:1fr 1fr}
  .socials{grid-column:1/-1}
  .strip-in{grid-template-columns:repeat(2,1fr)}
  .strip-in>div:nth-child(3){border-left:0}
  .strip-in>div:nth-child(n+3){border-top:1px solid var(--line)}
}
@media (max-width:640px){
  .wrap{padding:0 18px}
  .hide-sm{display:none}
  .sec{padding:68px 0}
  .split+.split{margin-top:68px}
  .sec-head{margin-bottom:36px}
  .cards,.cards-4{grid-template-columns:1fr}
  .mock-body{grid-template-columns:1fr}
  .mock-tree{display:none}
  .views{display:none}
  .mock-foot{padding:0 12px}
  .cta-row .btn-lg{flex:1 1 100%}
  .cta-band{padding:30px 22px}
  .contact{padding:24px 20px}
  .foot-in{grid-template-columns:1fr}
  .bars div{grid-template-columns:96px 1fr 46px}
  .strip b{font-size:17px}
}