:root{--white:#fff;--paper:#f7faf9;--ink:#101917;--muted:#5f6d69;--line:#dfe7e4;--line-strong:#cbd8d4;--teal:#176c5b;--teal-dark:#0d5144;--teal-soft:#e9f3f0;--coral:#d75b42;--shadow:0 24px 60px rgba(18,43,37,.11),0 2px 8px rgba(18,43,37,.05);--max:1180px}
*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--white);font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit}.section-shell{width:min(var(--max),calc(100% - 56px));margin-inline:auto}
.home-top{height:74px;display:flex;align-items:center;justify-content:space-between;padding:0 max(28px,calc((100vw - var(--max))/2));border-bottom:1px solid var(--line);background:rgba(255,255,255,.9);backdrop-filter:blur(14px);position:relative;z-index:10}.home-brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;font-size:19px;font-weight:700;letter-spacing:-.02em}.home-brand img{width:34px;height:34px;border-radius:9px}.home-nav-link{color:var(--teal);font-size:14px;font-weight:600;text-decoration:none;padding:8px 0}.home-nav-link span{display:inline-block;margin-left:5px;transition:transform .2s ease}.home-nav-link:hover span{transform:translateX(4px)}
.hero{width:min(var(--max),calc(100% - 56px));min-height:650px;margin:0 auto;padding:74px 0 86px;display:grid;grid-template-columns:.83fr 1.17fr;gap:clamp(46px,6vw,84px);align-items:center}.hero-copy{animation:rise .7s cubic-bezier(.22,1,.36,1) both}.hero-brand{margin:0 0 12px;color:var(--teal);font-size:clamp(48px,6vw,76px);font-weight:700;line-height:1;letter-spacing:-.055em}.hero h1{margin:0;font-size:clamp(34px,3.5vw,50px);line-height:1.16;letter-spacing:-.045em;font-weight:700}.hero-lead{max-width:32em;margin:26px 0 0;color:var(--muted);font-size:17px;line-height:1.9}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}.btn{min-height:48px;padding:0 22px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;gap:13px;text-decoration:none;font-size:15px;font-weight:600;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease}.btn-primary{color:#fff;background:var(--teal);box-shadow:0 8px 20px rgba(23,108,91,.17)}.btn-primary:hover{background:var(--teal-dark);transform:translateY(-2px);box-shadow:0 12px 24px rgba(23,108,91,.23)}.btn-secondary{color:var(--teal);border:1px solid #93b8af;background:#fff}.btn-secondary:hover{border-color:var(--teal);background:var(--teal-soft);transform:translateY(-2px)}.privacy-note{margin:21px 0 0;display:flex;align-items:center;gap:8px;color:#7c8985;font-size:12px}.privacy-dot{width:7px;height:7px;border-radius:50%;background:#55a18f;box-shadow:0 0 0 4px var(--teal-soft)}
.workbench{min-width:0;overflow:hidden;border:1px solid var(--line-strong);border-radius:14px;background:#fff;box-shadow:var(--shadow);animation:rise .8s .08s cubic-bezier(.22,1,.36,1) both}.workbench-bar,.workbench-footer{height:52px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;border-bottom:1px solid var(--line);font-size:12px;color:var(--muted)}.workbench-title{display:flex;align-items:center;gap:6px}.workbench-title strong{color:var(--ink);font-size:13px}.brand-mark{width:21px;height:21px;border-radius:6px;display:grid;place-items:center;color:#fff;background:var(--teal);font:600 11px "JetBrains Mono",monospace}.workbench-tools{display:flex;gap:18px;color:#4e5b58}.workbench-tools span:last-child{letter-spacing:2px}.workbench-body{display:grid;grid-template-columns:1.08fr .92fr;height:366px}.editor-pane{min-width:0;display:grid;grid-template-rows:42px 1fr 34px;border-right:1px solid var(--line)}.tab-row{display:flex;align-items:stretch;border-bottom:1px solid var(--line);background:var(--paper);font:500 11px "JetBrains Mono",monospace}.active-tab{display:flex;align-items:center;padding:0 14px;background:#fff;border-right:1px solid var(--line)}.add-tab{padding:10px 14px;color:var(--muted)}.code-area{min-width:0;overflow:hidden;display:grid;grid-template-columns:36px 1fr;padding:14px 0}.line-numbers{list-style:none;margin:0;padding:0 9px 0 0;text-align:right;color:#a0aca8;font:400 11px/2.15 "JetBrains Mono",monospace;border-right:1px solid #edf1ef}.code-area pre{min-width:0;margin:0;padding:0 13px;overflow:hidden;color:#303936;font:400 11px/2.15 "JetBrains Mono","Cascadia Code",monospace;white-space:pre}.code-key{color:#315da6}.code-string{color:#c34936}.editor-status{display:flex;align-items:center;justify-content:space-between;padding:0 12px;border-top:1px solid var(--line);background:var(--paper);color:#76827e;font-size:10px}.status-ready{color:var(--teal)}.result-pane{min-width:0;padding:0 16px}.result-head{height:42px;margin:0 -16px;padding:0 16px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);font-size:12px}.result-pane pre{margin:15px 0 8px;color:#303936;font:500 12px/1.9 "JetBrains Mono",monospace}.chart{display:block;width:100%;max-height:190px}.grid path{stroke:#e9eeec;stroke-width:1}.axes path{fill:none;stroke:#aab6b2;stroke-width:1.2}.fit-line{fill:none;stroke:var(--coral);stroke-width:2.5}.points circle{fill:var(--ink);stroke:#fff;stroke-width:1.5}.labels{fill:#7a8682;font:9px "JetBrains Mono",monospace}.workbench-footer{height:44px;border-top:1px solid var(--line);border-bottom:0;background:var(--paper)}.mini-run{color:#fff;background:var(--teal);border-radius:5px;padding:5px 13px;font-weight:600}
.capabilities{padding:98px 0 102px;border-top:1px solid var(--line)}.section-heading{text-align:center}.section-heading h2,.cta-copy h2{margin:0;font-size:clamp(30px,3.2vw,42px);line-height:1.2;letter-spacing:-.045em}.section-heading p{margin:15px 0 0;color:var(--muted);font-size:16px}.feature-list{list-style:none;margin:56px 0 0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);border-block:1px solid var(--line)}.feature-list li{position:relative;min-width:0;padding:40px 30px 36px;border-right:1px solid var(--line)}.feature-list li:last-child{border-right:0}.feature-index{position:absolute;top:15px;right:16px;color:#b0bbb7;font:500 10px "JetBrains Mono",monospace}.feature-icon{width:38px;height:38px;margin-bottom:24px;fill:none;stroke:var(--teal);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.feature-list h3{margin:0 0 10px;font-size:18px;letter-spacing:-.02em}.feature-list p{margin:0;color:var(--muted);font-size:14px;line-height:1.85}
.audience{padding:96px 0 104px;display:grid;grid-template-columns:.72fr 1.28fr;gap:76px;align-items:start;border-top:1px solid var(--line)}.section-heading-left{text-align:left}.section-heading-left p{max-width:21em;line-height:1.85}.audience-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr)}.audience-list li{min-width:0;padding:7px 27px;border-left:1px solid var(--line)}.audience-list li:first-child{border-left:0;padding-left:0}.audience-list li:last-child{padding-right:0}.audience-symbol{width:50px;height:50px;margin-bottom:22px;border-radius:50%;display:grid;place-items:center;color:var(--teal);background:var(--teal-soft);font:500 23px "JetBrains Mono",monospace}.audience-list strong{font-size:16px}.audience-list p{margin:7px 0 0;color:var(--muted);font-size:14px;line-height:1.8}
.cta-wrap{padding-bottom:92px}.cta-block{position:relative;overflow:hidden;min-height:224px;padding:48px 54px;border:1px solid var(--line-strong);border-radius:14px;display:flex;align-items:center;justify-content:space-between;gap:42px;background-color:#fbfdfc;background-image:linear-gradient(rgba(23,108,91,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(23,108,91,.055) 1px,transparent 1px);background-size:22px 22px}.cta-block::after{content:"↗";position:absolute;right:34px;top:-43px;color:rgba(23,108,91,.06);font:700 190px/1 "JetBrains Mono",monospace;pointer-events:none}.cta-copy{position:relative;z-index:1}.cta-copy p{max-width:31em;margin:15px 0 0;color:var(--muted)}.btn-large{position:relative;z-index:1;flex:0 0 auto;min-height:54px;padding-inline:27px}
.home-foot{min-height:80px;padding:20px 0;border-top:1px solid var(--line);display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:18px;color:#7a8783;font-size:12px}.home-brand-small{font-size:16px;color:var(--ink)}.home-brand-small img{width:28px;height:28px}.home-foot>a:last-child{color:var(--teal);text-decoration:none;font-weight:600}@keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}
@media(max-width:980px){.hero{grid-template-columns:.75fr 1.25fr;gap:30px;padding-top:58px}.hero-brand{font-size:52px}.hero h1{font-size:34px}.hero-lead{font-size:14px;line-height:1.78}.hero-actions{gap:9px}.btn{padding-inline:16px;font-size:13px}.workbench-body{height:330px}.workbench-tools span:not(:last-child){display:none}.code-area pre{font-size:9px}.feature-list{grid-template-columns:repeat(2,1fr)}.feature-list li:nth-child(2){border-right:0}.feature-list li:nth-child(-n+2){border-bottom:1px solid var(--line)}.audience{grid-template-columns:1fr;gap:46px}.section-heading-left,.section-heading-left p{text-align:center;margin-inline:auto}}
@media(max-width:680px){.section-shell,.hero{width:min(100% - 36px,var(--max))}.home-top{height:66px;padding-inline:18px}.home-brand{font-size:17px}.home-brand img{width:30px;height:30px}.home-nav-link{font-size:13px}.hero{min-height:auto;padding:45px 0 66px;gap:42px;grid-template-columns:1fr}.hero-brand{font-size:46px}.hero h1{font-size:35px}.hero-lead{margin-top:21px;font-size:15px;line-height:1.8}.hero-actions{flex-direction:column;align-items:stretch}.btn{padding-inline:22px;font-size:15px}.privacy-note{justify-content:center}.workbench-body{grid-template-columns:1fr;height:auto}.editor-pane{height:300px;border-right:0;border-bottom:1px solid var(--line)}.result-pane{height:315px}.workbench-tools span:not(:last-child){display:none}.code-area pre{font-size:10px}.workbench-footer{display:none}.capabilities,.audience{padding:72px 0}.section-heading h2,.cta-copy h2{font-size:30px}.section-heading p{font-size:14px}.feature-list{grid-template-columns:1fr;margin-top:38px}.feature-list li{border-right:0;border-bottom:1px solid var(--line);padding:35px 14px 30px;display:grid;grid-template-columns:48px 1fr;column-gap:18px}.feature-list li:nth-child(2){border-bottom:1px solid var(--line)}.feature-list li:last-child{border-bottom:0}.feature-icon{grid-row:1/span 2;margin:2px 0 0}.feature-index{top:12px}.audience-list{grid-template-columns:1fr}.audience-list li,.audience-list li:first-child,.audience-list li:last-child{padding:24px 0;border-left:0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:54px 1fr;gap:18px}.audience-list li:last-child{border-bottom:0}.audience-symbol{margin:0}.cta-wrap{padding-bottom:60px}.cta-block{padding:40px 25px;text-align:center;flex-direction:column}.btn-large{width:100%}.home-foot{min-height:96px;grid-template-columns:auto auto;justify-content:space-between}.home-foot>span{grid-row:2;grid-column:1/-1}.home-foot>a:last-child{text-align:right}}