:root{--bg:#f8f8f2;--panel:#fff;--ink:#263a34;--muted:#77847a;--accent:#337f65;--soft:#e7efe4;--line:#e4e9df;--icon-bg:#e9f0e5;--art:#e9efdf;--bs-body-font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif}html{scroll-behavior:smooth;scroll-padding-top:24px}body{background:var(--bg);color:var(--ink);font-family:var(--bs-body-font-family);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}a:focus-visible{outline:3px solid var(--accent);outline-offset:5px;border-radius:5px}.skip{position:fixed;top:-60px;left:20px;z-index:100;background:var(--panel);padding:12px}.skip:focus{top:10px}.shell{max-width:1320px;padding:0 56px;margin:auto}.site-head{min-height:112px;display:flex;align-items:center;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;font-size:24px;font-weight:760;letter-spacing:-1px}.brand-mark{display:grid;place-items:center;background:var(--accent);color:#fff;width:44px;height:44px;border-radius:14px;font-size:35px;font-weight:700;line-height:1;position:relative}.brand-mark>span{position:absolute;font-size:25px;right:7px;top:4px;color:#d4e9bc}.brand-sub{display:block;font-size:10px;letter-spacing:1.5px;color:var(--muted);font-weight:400;margin-top:2px}.site-head nav{display:flex;gap:8px}.nav-pill{font-size:13px;padding:10px 18px;border-radius:25px;color:var(--muted)}.nav-pill.active{color:var(--ink);background:var(--soft)}.head-note{font-size:11px;color:var(--muted);display:flex;align-items:center;gap:8px}.head-note i,.ready i{display:inline-block;width:5px;height:5px;background:var(--accent);border-radius:50%}.hero{display:grid;grid-template-columns:1.15fr 1fr;align-items:center;min-height:510px;padding:52px 0 50px;gap:34px}.eyebrow{font-size:10px;letter-spacing:2px;font-weight:650;color:var(--muted)}.hero .eyebrow{display:flex;align-items:center;gap:9px;letter-spacing:1.4px}.spark{color:var(--accent);font-size:20px}.hero h1{font-size:clamp(40px,5vw,66px);line-height:1.2;letter-spacing:-2px;font-weight:750;margin:18px 0 22px}.hero h1>span{color:var(--accent)}.hero-desc{font-size:15px;line-height:1.95;color:var(--muted);margin-bottom:26px}.main-btn{background:var(--accent);color:white;padding:13px 22px;border-radius:14px;border:0;font-size:13px;box-shadow:0 6px 13px #337f6512;display:inline-flex;gap:28px;align-items:center}.main-btn:hover{background:var(--ink);color:var(--bg)}.hero-caption{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:10px;margin-top:24px}.tiny-line{width:20px;height:1px;background:var(--muted)}.hero-art{height:355px;position:relative;background:var(--art);border-radius:45% 45% 42% 42%;isolation:isolate;margin:0 20px}.art-label{position:absolute;top:18px;left:50%;transform:translateX(-50%);font-size:7px;letter-spacing:2.1px;white-space:nowrap;color:var(--accent);opacity:.7}.paper{position:absolute;width:205px;height:259px;border-radius:19px;left:calc(50% - 102px);top:54px;box-shadow:0 18px 30px #284e3320}.back-paper{background:#c0d3ad;transform:rotate(-12deg) translate(-12px,-8px)}.main-paper{background:#fffefa;padding:24px;transform:rotate(8deg);color:#263a34;display:flex;flex-direction:column}.paper-number{font-size:8px;letter-spacing:1px;opacity:.5}.paper-symbol{font-size:50px;color:#6a995a;line-height:1.3;margin:13px 0 9px}.main-paper strong{font-size:24px;line-height:1.3;letter-spacing:-.7px}.paper-bottom{display:flex;justify-content:space-between;font-size:9px;margin-top:auto;padding-top:14px;border-top:1px solid #dce3d5}.paper-bottom span{font-size:15px}.floating-tag{position:absolute;bottom:23px;right:-7px;background:var(--panel);border:1px solid var(--line);border-radius:13px;padding:11px 15px;font-size:10px;box-shadow:0 6px 15px #22352a0a;transform:rotate(-5deg)}.floating-tag>span{color:var(--accent);margin-right:6px}.orbit{border:1px solid #65845525;position:absolute;inset:12px -13px;border-radius:50%;transform:rotate(25deg);z-index:-1}.orbit-two{inset:35px -25px;transform:rotate(-30deg)}.art-dot{position:absolute;border-radius:50%;background:#9db88f}.dot-one{width:14px;height:14px;left:1%;top:24%}.dot-two{width:8px;height:8px;right:1%;bottom:30%;background:#d4ae6f}.section-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:25px;gap:20px}.section-eyebrow{font-size:8px;margin-bottom:9px}.section-head h2{font-size:24px;font-weight:700;margin:0;letter-spacing:-.5px}.count{color:var(--muted);font-size:11px;margin-left:14px;vertical-align:top;font-weight:450}.section-head p{font-size:11px;color:var(--muted);margin:0}.tools{padding:0 0 60px}.tool-card{height:100%;background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:25px 24px 0;box-shadow:0 4px 12px #243a2c02;transition:transform .2s,box-shadow .2s}.tool-card.memory:hover{transform:translateY(-5px);box-shadow:0 12px 25px #243a2c0d}.tool-top{display:flex;align-items:center;justify-content:space-between}.tool-icon{display:grid;place-items:center;width:49px;height:49px;border-radius:15px;background:var(--icon-bg);color:var(--accent)}.tool-icon svg{width:28px;height:28px}.status{font-size:9px;border-radius:20px;background:var(--soft);color:var(--muted);padding:6px 9px;font-weight:450;display:flex;align-items:center;gap:5px}.status.ready{background:#eaf2e7;color:#3d7b57}.card-body{padding:23px 0 0;display:flex;flex-direction:column}.tool-kind{font-size:9px;color:var(--muted);margin-bottom:7px}.tool-card h3{font-size:21px;font-weight:700;margin-bottom:12px;letter-spacing:-.6px}.tool-card .card-text{font-size:11px;line-height:1.9;color:var(--muted);margin-bottom:19px}.tags{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:28px}.tags span{font-size:8px;padding:4px 7px;background:var(--bg);border-radius:5px;color:var(--muted)}.tool-link{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);padding:16px 0 19px;font-size:11px;color:var(--accent);font-weight:600;margin-top:auto;min-height:52px}.tool-link>span:last-child{font-size:19px;line-height:1}.tool-link.unavailable{font-weight:400;color:var(--muted)}.tool-link.unavailable>span:first-child{font-size:11px;line-height:1.5}.knowledge{--icon-bg:#f3eee2}.knowledge .tool-icon{color:#a88a52}.next{--icon-bg:#eeeaf3}.next .tool-icon{color:#9384a8}.about{position:relative;display:flex;align-items:center;gap:58px;background:var(--soft);border-radius:24px;padding:35px 40px;margin-bottom:45px;overflow:hidden}.about-sign{font-size:21px;line-height:1.3;font-weight:650;letter-spacing:-.8px;flex-shrink:0}.about-sign em{font-family:Georgia,serif;font-weight:400;color:var(--accent)}.about h2{font-size:16px;font-weight:650;margin:9px 0}.about p{font-size:11px;color:var(--muted);line-height:1.9;margin:0}.about .eyebrow{font-size:8px}.about-flower{font-size:85px;margin-left:auto;color:var(--accent);opacity:.2;line-height:1}footer{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding:25px 0 30px;font-size:10px;color:var(--muted);gap:20px}.footer-brand{font-size:16px;font-weight:700;letter-spacing:-.7px;color:var(--ink)}.footer-brand span{font-size:9px;font-weight:400;letter-spacing:0;margin-left:15px}
/* B: centered landing page and a blue product strip. */
[data-style=sky]{--bg:#f6f9ff;--ink:#1d3155;--muted:#76829a;--accent:#3d66e8;--soft:#e9efff;--line:#e1e8f7;--icon-bg:#eaf0ff;--art:#eaf0ff}[data-style=sky] .shell{max-width:1380px}[data-style=sky] .site-head{border-bottom:0;min-height:96px}[data-style=sky] .brand-mark{border-radius:50%;background:#3d66e8}[data-style=sky] .hero{display:block;text-align:center;position:relative;min-height:auto;padding:50px 0 66px}[data-style=sky] .hero .eyebrow,[data-style=sky] .hero-caption{justify-content:center}[data-style=sky] h1{font-size:62px;letter-spacing:-2.5px;margin:18px 0}[data-style=sky] h1 br{display:none}[data-style=sky] .hero-desc br{display:none}[data-style=sky] .hero-desc{font-size:14px;margin-bottom:24px}[data-style=sky] .hero-art{display:none}[data-style=sky] .hero:before,[data-style=sky] .hero:after{content:"✳";position:absolute;color:#b9cafa;font-size:66px;left:5%;top:100px;transform:rotate(15deg)}[data-style=sky] .hero:after{content:"✦";left:auto;right:6%;top:180px;font-size:45px}[data-style=sky] .main-btn{border-radius:30px;padding:14px 25px}[data-style=sky] .tools{background:#fff;border-radius:32px;border:1px solid var(--line);padding:31px 30px 32px;margin-bottom:28px;box-shadow:0 20px 55px #4d6bbb08}[data-style=sky] .tool-card{border-radius:20px;box-shadow:none;background:var(--bg)}[data-style=sky] .tool-card.memory{background:#3d66e8;color:white;--line:#ffffff26;--muted:#d5defb;--accent:#fff;--icon-bg:#ffffff1a;--bg:#ffffff14;--soft:#ffffff15}[data-style=sky] .memory .ready{background:#ffffff20;color:white}[data-style=sky] .memory .ready i{background:#b5f5d4}[data-style=sky] .about{background:transparent;border-radius:0;padding:22px 20px 40px;justify-content:center;gap:65px;margin-bottom:14px}[data-style=sky] .about-flower{display:none}[data-style=sky] .head-note{background:#fff;border:1px solid var(--line);padding:8px 12px;border-radius:20px}
/* C: dark editorial workbench, with side navigation on wide screens. */
[data-style=night]{--bg:#13171c;--panel:#1d232a;--ink:#e5e8e4;--muted:#89929d;--accent:#bddd84;--soft:#262f2a;--line:#30373e;--icon-bg:#303d2d;--art:#242d26}[data-style=night] .shell{max-width:1440px;display:grid;grid-template-columns:190px 1fr;gap:0 44px;padding:0 38px}[data-style=night] .site-head{position:sticky;top:0;height:100vh;min-height:700px;display:flex;flex-direction:column;justify-content:start;align-items:start;border:0;border-right:1px solid var(--line);padding:43px 25px 30px 0;grid-row:1/3;gap:42px}[data-style=night] .brand{font-size:22px;gap:10px}[data-style=night] .brand-mark{color:#182119;width:38px;height:38px;font-size:29px;border-radius:10px}[data-style=night] .brand-mark>span{color:#628046}[data-style=night] .brand-sub{font-size:8px;letter-spacing:1px}[data-style=night] .site-head nav{flex-direction:column;width:100%;gap:10px}[data-style=night] .nav-pill{border-radius:10px;font-size:12px;padding:13px 15px}[data-style=night] .nav-pill.active{border:1px solid #bddc8430;color:var(--accent)}[data-style=night] .head-note{margin-top:auto;font-size:10px}[data-style=night] .hero{min-height:410px;gap:5px;padding:54px 0 40px;grid-template-columns:1.15fr .85fr}[data-style=night] h1{font-size:51px;font-weight:550;letter-spacing:-1.8px}[data-style=night] .hero-art{height:270px;margin:0 10px;border-radius:50%}[data-style=night] .art-label{font-size:5px}[data-style=night] .paper{width:155px;height:205px;left:calc(50% - 77px);top:32px;border-radius:13px}[data-style=night] .main-paper{padding:18px;background:#dfe8ce;transform:rotate(10deg)}[data-style=night] .back-paper{background:#576b48;transform:rotate(-10deg) translate(-7px,-4px)}[data-style=night] .paper-number{font-size:6px}[data-style=night] .paper-symbol{font-size:37px;margin:8px 0}[data-style=night] .main-paper strong{font-size:20px}[data-style=night] .paper-bottom{font-size:7px;padding-top:7px}[data-style=night] .floating-tag{font-size:8px;padding:9px 11px;bottom:8px;right:-4px}[data-style=night] .hero-desc{font-size:12px}[data-style=night] .hero-caption{font-size:8px;margin-top:20px}[data-style=night] .eyebrow{font-size:8px;letter-spacing:1px}[data-style=night] .main-btn{color:#182119;border-radius:10px;padding:12px 17px;font-size:11px}[data-style=night] .main-btn:hover{background:#d1eba4}[data-style=night] .section-head h2{font-size:21px}[data-style=night] .section-head p{font-size:9px}[data-style=night] .tool-grid{--bs-gutter-x:16px;--bs-gutter-y:16px}[data-style=night] .tool-card{padding:21px 20px 0;border-radius:17px;box-shadow:none}[data-style=night] .tool-card h3{font-size:18px}[data-style=night] .tool-card .card-text{font-size:10px}[data-style=night] .tool-icon{width:42px;height:42px;border-radius:12px}[data-style=night] .tool-icon svg{width:25px;height:25px}[data-style=night] .status.ready{background:#bddd8414;color:#bddc84}[data-style=night] .knowledge{--icon-bg:#3a342a}[data-style=night] .next{--icon-bg:#302e3d}[data-style=night] .about{padding:25px 27px;border-radius:17px;gap:30px;margin-bottom:24px}[data-style=night] .about-sign{font-size:18px}[data-style=night] .about h2{font-size:14px}[data-style=night] .about p{font-size:10px}[data-style=night] .about-flower{font-size:65px}[data-style=night] .tools{padding-bottom:30px}[data-style=night] footer{grid-column:2;font-size:9px;padding:20px 0}[data-style=night] .footer-brand{font-size:14px}
@media(min-width:768px) and (max-width:1199px){.tool-grid>div:last-child{width:100%}.tool-grid>div:last-child .tool-card{display:grid;grid-template-columns:100px 1fr}.tool-grid>div:last-child .tool-top{flex-direction:column;justify-content:start;gap:14px}.tool-grid>div:last-child .card-body{padding-top:0}.tool-grid>div:last-child .tags{margin-bottom:10px}[data-style=night] .shell{grid-template-columns:160px 1fr;gap:0 28px;padding:0 28px}[data-style=night] .hero-art{display:none}[data-style=night] .hero{grid-template-columns:1fr}[data-style=night] .section-head{display:block}[data-style=night] .section-head p{margin-top:12px}}
@media(max-width:767px){.shell{padding:0 22px}.site-head{min-height:90px;gap:10px}.brand{font-size:22px;gap:9px}.brand-mark{width:37px;height:37px;font-size:29px;border-radius:12px}.brand-sub{font-size:8px;letter-spacing:1px}.brand-mark>span{font-size:21px;top:2px;right:6px}.head-note{display:none}.site-head nav{gap:0}.nav-pill{font-size:11px;padding:9px 10px}.site-head nav a:last-child{display:none}.hero{grid-template-columns:1fr;padding:35px 0 34px;gap:25px;min-height:0}.hero h1{font-size:46px;margin:15px 0 20px;letter-spacing:-1.8px}.hero .eyebrow{font-size:7px;letter-spacing:.8px}.spark{font-size:17px}.hero-desc{font-size:13px;line-height:1.95;margin-bottom:21px}.main-btn{padding:12px 19px;font-size:12px}.hero-caption{margin-top:18px;font-size:9px}.hero-art{height:275px;margin:4px 25px 10px}.paper{width:163px;height:209px;left:calc(50% - 81px);top:40px;border-radius:15px}.main-paper{padding:19px}.paper-number{font-size:6px}.paper-symbol{font-size:39px;margin:9px 0}.main-paper strong{font-size:22px}.paper-bottom{font-size:8px;padding-top:9px}.art-label{font-size:5px;top:11px}.floating-tag{font-size:8px;bottom:10px;padding:9px 12px}.section-head{display:block;margin-bottom:20px}.section-head h2{font-size:23px}.section-head p{margin-top:10px;font-size:10px}.section-eyebrow{font-size:7px}.tool-card{padding:24px 24px 0;border-radius:23px}.tool-card h3{font-size:23px}.tool-card .card-text{font-size:12px}.tool-kind{font-size:10px}.tags span{font-size:9px}.status{font-size:10px}.tool-link{font-size:12px;padding:17px 0}.tool-icon{width:49px;height:49px}.tools{padding-bottom:32px}.tool-grid{--bs-gutter-y:16px}.about{display:block;padding:28px;margin-bottom:28px}.about-sign{margin-bottom:23px;font-size:24px}.about h2{font-size:16px}.about p{font-size:11px}.about p br{display:none}.about-flower{position:absolute;right:19px;top:20px;font-size:58px}.about .eyebrow{font-size:7px}footer{flex-wrap:wrap;gap:16px;padding:22px 0;font-size:9px}.footer-brand{width:100%;font-size:18px}.footer-brand span{font-size:10px}.footer-brand+span{margin-right:auto}[data-style=sky] .site-head{min-height:86px}[data-style=sky] .hero{padding:35px 0 40px}[data-style=sky] h1{font-size:43px;line-height:1.25;letter-spacing:-2px}[data-style=sky] h1 br{display:block}[data-style=sky] .hero-desc{font-size:12px;max-width:270px;margin:0 auto 23px}[data-style=sky] .hero-desc br{display:block}[data-style=sky] .hero:before{font-size:27px;left:0;top:105px}[data-style=sky] .hero:after{font-size:24px;right:-4px;top:180px}[data-style=sky] .tools{padding:25px 17px 18px;border-radius:25px;margin:0 -4px 5px}[data-style=sky] .tool-card{padding:23px 21px 0}[data-style=sky] .about{display:block;padding:30px 8px 24px;margin-bottom:14px}[data-style=night] .shell{display:block;padding:0 21px}[data-style=night] .site-head{height:auto;min-height:87px;position:static;flex-direction:row;padding:0;border-right:0;border-bottom:1px solid var(--line);align-items:center;justify-content:space-between;gap:10px}[data-style=night] .brand{font-size:21px}[data-style=night] .brand-sub{font-size:7px}[data-style=night] .site-head nav{width:auto;display:block}[data-style=night] .nav-pill{font-size:10px;padding:10px 12px}[data-style=night] .hero{grid-template-columns:1fr;padding:35px 0 30px;gap:20px;min-height:0}[data-style=night] h1{font-size:47px}[data-style=night] .hero-art{display:block;height:255px;width:260px;margin:0 auto 10px}[data-style=night] .hero-desc{font-size:13px}[data-style=night] .hero-caption{font-size:9px}[data-style=night] .tool-card{padding:24px 22px 0;border-radius:19px}[data-style=night] .tool-card h3{font-size:22px}[data-style=night] .tool-card .card-text{font-size:12px}[data-style=night] .tool-icon{width:47px;height:47px}[data-style=night] .section-head p{font-size:10px}[data-style=night] .about{padding:27px}[data-style=night] .about-sign{font-size:23px}[data-style=night] .about h2{font-size:15px}[data-style=night] .about p{font-size:11px}[data-style=night] footer{font-size:9px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}@media(max-width:359px){.shell{padding:0 17px}.hero h1{font-size:40px}.hero-art{margin-left:18px;margin-right:18px}.hero .eyebrow{letter-spacing:.1px}.tool-card{padding-left:20px;padding-right:20px}}
/* Keep tool descriptions legible on both screen sizes. */
.tool-card .card-text{font-size:13px}.tool-kind{font-size:10px}.tags span{font-size:10px}.status{font-size:10px}.tool-link{font-size:12px}.section-head p{font-size:12px}
@media(max-width:767px){.tool-card .card-text,[data-style=night] .tool-card .card-text{font-size:14px}.hero-desc,[data-style=night] .hero-desc,[data-style=sky] .hero-desc{font-size:14px}.tool-kind{font-size:11px}.tool-link{font-size:14px}.tool-link.unavailable>span:first-child{font-size:12px}.tags span{font-size:11px}.about p,[data-style=night] .about p{font-size:13px}.section-head p,[data-style=night] .section-head p{font-size:12px}}