:root{--ac1:#4F46E5;--ac2:#7C3AED;--ac-deep:#4338CA;--ac-mid:#6D28D9;--ac-soft:#EEEDFD;--ac-softer:#F6F5FE;--ink:#1E1B2E;--muted:#6B6780;--line:#E8E6F0;--bg:#FAFAFC;--card:#FFFFFF;--panel:#F3F2FA;--grad:linear-gradient(120deg,var(--ac1),var(--ac2));--ok:#30A46C;--warn:#D97706;--danger:#E5484D;--r-sm:10px;--r-md:14px;--r-lg:20px;--r-xl:28px;--sh1:0 2px 8px rgba(30,27,46,.06);--sh2:0 8px 28px rgba(30,27,46,.1);--sh3:0 24px 64px rgba(30,27,46,.18);--ease:cubic-bezier(.16,1,.3,1);--font:"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;--mono:"SF Mono",Consolas,"Courier New",monospace}[data-theme=teal]{--ac1:#0D9488;--ac2:#0891B2;--ac-deep:#0F766E;--ac-mid:#0A93A0;--ac-soft:#E4F6F4;--ac-softer:#F1FAF9}[data-theme=amber]{--ac1:#EA580C;--ac2:#F59E0B;--ac-deep:#C2410C;--ac-mid:#F07B09;--ac-soft:#FDEEE2;--ac-softer:#FFF7F0}[data-theme=rose]{--ac1:#E11D48;--ac2:#BE185D;--ac-deep:#BE123C;--ac-mid:#D01A52;--ac-soft:#FCE9EF;--ac-softer:#FEF5F8}*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}html{scroll-behavior:smooth}body{font-family:var(--font);background:var(--bg);color:var(--ink);line-height:1.6;font-size:15.5px;overflow-x:hidden}body:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;z-index:-1;background:radial-gradient(52rem 36rem at 12% -4%,color-mix(in srgb,var(--ac1) 9%,transparent),transparent 60%),radial-gradient(44rem 32rem at 104% 14%,color-mix(in srgb,var(--ac2) 8%,transparent),transparent 58%)}img{max-width:100%;height:auto}button{font-family:inherit;border:none;cursor:pointer;background:none;color:inherit;touch-action:manipulation}a{color:inherit;text-decoration:none}:focus-visible{outline:2px solid var(--ac1);outline-offset:2px;border-radius:4px}.ic{width:22px;height:22px;flex:none;display:block}.gs1{stop-color:var(--ac1)}.gsm{stop-color:var(--ac-mid)}.gs2{stop-color:var(--ac2)}.wrap{max-width:1160px;margin:0 auto;padding:0 28px}.site-nav{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 82%,transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:border .2s,box-shadow .2s}.site-nav.scrolled{border-bottom-color:var(--line);box-shadow:0 4px 24px #1e1b2e0d}.nav-inner{display:flex;align-items:center;gap:26px;height:66px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:-.02em;color:var(--ac-deep)}.brand svg{width:32px;height:32px;filter:drop-shadow(0 3px 8px color-mix(in srgb,var(--ac1) 26%,transparent))}.brand .sub{font-weight:400;font-size:11.5px;color:var(--muted);margin-left:2px;letter-spacing:.02em}.nav-links{display:flex;gap:4px;margin-left:12px}.nav-links a{padding:8px 14px;border-radius:10px;font-size:14.5px;font-weight:600;color:var(--muted);transition:background .16s,color .16s}.nav-links a:hover{background:var(--ac-soft);color:var(--ac-deep)}.nav-space{flex:1}.theme-dots{display:flex;gap:7px;margin-right:6px}.theme-dot{width:20px;height:20px;border-radius:50%;border:2px solid transparent;position:relative;transition:transform .16s var(--ease)}.theme-dot:hover{transform:scale(1.15)}.theme-dot.on{border-color:var(--ink)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 20px;border-radius:var(--r-md);font-weight:600;font-size:15px;transition:transform .16s var(--ease),box-shadow .16s var(--ease),background .16s;-webkit-user-select:none;user-select:none}.btn:active{transform:scale(.97)}.btn-pri{background:var(--grad);color:#fff;box-shadow:0 4px 14px color-mix(in srgb,var(--ac1) 35%,transparent)}.btn-pri:hover{box-shadow:0 8px 22px color-mix(in srgb,var(--ac1) 45%,transparent);transform:translateY(-1px)}.btn-ghost{background:var(--panel);color:var(--ink)}.btn-ghost:hover{background:var(--ac-soft);color:var(--ac-deep)}.btn-light{background:#fff;color:var(--ac-deep)}.btn-light:hover{transform:translateY(-1px);box-shadow:0 8px 22px #0000002e}.btn-line{background:transparent;border:1.5px solid rgba(255,255,255,.55);color:#fff}.btn-line:hover{background:#ffffff24}.hero{position:relative;padding:88px 0 84px;overflow:hidden}.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:48px;align-items:center}.hero-chip{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--ac-deep);background:var(--ac-soft);border:1px solid color-mix(in srgb,var(--ac1) 18%,transparent);padding:5px 14px;border-radius:999px;margin-bottom:20px}.hero-chip .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px color-mix(in srgb,var(--ok) 22%,transparent)}.hero h1{font-size:clamp(34px,4.6vw,52px);line-height:1.18;font-weight:800;letter-spacing:-.03em}.hero h1 .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}.hero .lead{margin-top:18px;font-size:17px;color:var(--muted);max-width:33em}.hero-ctas{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}.hero-meta{display:flex;gap:22px;margin-top:34px;flex-wrap:wrap}.hero-meta .hm{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--muted)}.hero-meta .hm b{font-size:17px;color:var(--ink);font-family:var(--mono);letter-spacing:-.01em}.hero-meta .hm .ic{width:17px;height:17px;color:var(--ac1)}.hero-visual{position:relative;display:flex;justify-content:center;min-height:600px;align-items:center}.deco-bubble{position:absolute;border-radius:50%;background:var(--ac-soft);border:1px solid color-mix(in srgb,var(--ac1) 15%,transparent)}.db1{width:230px;height:230px;top:-30px;right:4%}.db2{width:110px;height:110px;bottom:8%;left:2%}.db3{width:56px;height:56px;top:16%;left:10%}.float-msg{position:absolute;padding:11px 16px;border-radius:18px;font-size:14.5px;font-weight:600;box-shadow:var(--sh2);animation:floaty 5.2s ease-in-out infinite;z-index:3}.fm1{top:9%;right:0;background:var(--grad);color:#fff;border-top-right-radius:6px;box-shadow:0 12px 30px color-mix(in srgb,var(--ac1) 40%,transparent)}.fm2{bottom:20%;left:0;background:var(--card);border:1px solid var(--line);color:var(--ink);border-top-left-radius:6px;animation-delay:1.4s}.fm3{bottom:-2%;right:8%;background:var(--card);border:1px solid var(--line);animation-delay:2.6s;font-family:var(--mono);font-size:12.5px;color:var(--muted)}@keyframes floaty{0%,to{transform:translateY(0)}50%{transform:translateY(-12px)}}.phone{position:relative;z-index:2;width:296px;background:var(--card);border-radius:40px;border:1px solid var(--line);box-shadow:0 34px 90px #1e1b2e33,0 0 0 9px #211d2f,0 0 0 11px #3a3450;overflow:hidden}.phone-island{width:86px;height:22px;border-radius:12px;background:#0f0c16;margin:12px auto 2px}.ph-head{display:flex;align-items:center;gap:11px;padding:10px 16px 12px;border-bottom:1px solid var(--line)}.ph-ava{width:38px;height:38px;border-radius:38%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex:none}.ph-head b{font-size:14.5px;display:block;line-height:1.3}.ph-head span{font-size:11px;color:var(--muted)}.ph-body{padding:16px 14px;display:flex;flex-direction:column;gap:8px;min-height:328px;background:var(--bg)}.ph-msg{max-width:78%;padding:9px 13px;border-radius:16px;font-size:13px;line-height:1.5;box-shadow:var(--sh1)}.ph-msg.them{align-self:flex-start;background:var(--ac-softer);border:1px solid color-mix(in srgb,var(--ac1) 14%,transparent);border-top-left-radius:5px}.ph-msg.me{align-self:flex-end;background:var(--grad);color:#fff;border-top-right-radius:5px}.ph-msg .t{display:block;font-size:9.5px;opacity:.65;margin-top:3px;font-family:var(--mono)}.ph-input{display:flex;align-items:center;gap:10px;padding:10px 14px 16px;background:var(--card)}.ph-input .box{flex:1;min-height:40px;display:flex;align-items:center;padding:0 14px;border-radius:13px;background:var(--bg);border:1.5px solid var(--line);font-size:12.5px;color:var(--muted)}.ph-send{width:40px;height:40px;border-radius:13px;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px color-mix(in srgb,var(--ac1) 35%,transparent)}.ph-send .ic{width:18px;height:18px}.section{padding:84px 0}.section-head{max-width:640px;margin:0 auto 48px;text-align:center}.eyebrow{display:inline-flex;font-size:12.5px;font-weight:700;letter-spacing:.1em;color:var(--ac-deep);background:var(--ac-soft);padding:4px 14px;border-radius:999px;margin-bottom:14px}.section-head h2{font-size:clamp(26px,3.2vw,36px);font-weight:800;letter-spacing:-.025em;line-height:1.25}.section-head p{margin-top:12px;color:var(--muted);font-size:15.5px}.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.feat-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 24px;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border .22s}.feat-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:color-mix(in srgb,var(--ac1) 22%,transparent)}.feat-ic{width:48px;height:48px;border-radius:15px;background:var(--ac-soft);color:var(--ac-deep);display:flex;align-items:center;justify-content:center;margin-bottom:16px}.feat-ic .ic{width:23px;height:23px}.feat-card h3{font-size:17px;font-weight:700;letter-spacing:-.01em}.feat-card p{margin-top:7px;font-size:13.8px;color:var(--muted)}.platform-band{position:relative}.plat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;max-width:980px;margin:0 auto}.plat-card{position:relative;background:var(--card);border:1px solid var(--line);border-radius:22px;padding:28px 24px 24px;display:flex;flex-direction:column;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border .22s;overflow:hidden}.plat-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad);opacity:.9}.plat-card:hover{transform:translateY(-4px);box-shadow:var(--sh2)}.plat-top{display:flex;align-items:center;gap:14px;margin-bottom:14px}.plat-ic{width:52px;height:52px;border-radius:16px;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 16px color-mix(in srgb,var(--ac1) 30%,transparent)}.plat-ic .ic{width:25px;height:25px}.plat-top h3{font-size:18.5px;font-weight:800;letter-spacing:-.01em}.plat-top .tag{display:inline-flex;font-size:11px;font-weight:600;color:var(--ac-deep);background:var(--ac-soft);border-radius:999px;padding:1px 9px;margin-left:8px;vertical-align:2px}.plat-card .desc{font-size:13.8px;color:var(--muted);min-height:3.2em}.url-row{display:flex;align-items:center;gap:8px;margin:16px 0 18px;padding:10px 8px 10px 14px;background:var(--panel);border-radius:12px;border:1px dashed color-mix(in srgb,var(--ac1) 22%,transparent)}.url-row code{flex:1;font-family:var(--mono);font-size:13.5px;color:var(--ac-deep);letter-spacing:-.01em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.url-row .copy-btn{width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;color:var(--muted);transition:background .16s,color .16s;flex:none}.url-row .copy-btn:hover{background:var(--ac-soft);color:var(--ac-deep)}.url-row .copy-btn .ic{width:16px;height:16px}.plat-card .btn{margin-top:auto;width:100%}.plat-feats{display:flex;gap:6px;flex-wrap:wrap;margin:0 0 14px}.plat-feats span{font-size:11px;font-weight:600;color:var(--ac-deep);background:var(--ac-soft);padding:2px 10px;border-radius:999px}.theme-band{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.theme-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.theme-item{border:2px solid var(--line);border-radius:18px;padding:12px;cursor:pointer;background:var(--card);transition:border .18s,transform .18s var(--ease)}.theme-item:hover{transform:translateY(-3px)}.theme-item.on{border-color:var(--ac1)}.theme-prev{height:76px;border-radius:12px;position:relative;overflow:hidden;margin-bottom:10px}.theme-prev:before{content:"";position:absolute;left:14px;bottom:-14px;width:34px;height:34px;border-radius:50%;background:#ffffff59}.theme-prev .mini-bubble{position:absolute;top:16px;left:14px;width:52px;height:18px;border-radius:9px;background:#ffffffd9}.theme-prev .mini-bubble.b2{left:auto;right:14px;top:34px;background:#ffffff73}.theme-item b{font-size:14.5px;display:flex;align-items:center;gap:6px}.theme-item .tkc{width:15px;height:15px;color:var(--ac1);opacity:0}.theme-item.on .tkc{opacity:1}.theme-item .t-desc{font-size:11.5px;color:var(--muted)}.contact-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:22px;align-items:stretch}.chan{display:flex;align-items:center;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:15px 16px;margin-bottom:12px;transition:transform .2s var(--ease),box-shadow .2s var(--ease)}.chan:hover{transform:translateY(-2px);box-shadow:var(--sh1)}.chan .c-ic{width:46px;height:46px;border-radius:14px;background:var(--ac-soft);color:var(--ac-deep);display:flex;align-items:center;justify-content:center;flex:none}.chan .c-ic .ic{width:21px;height:21px}.chan b{font-size:14.5px;display:block;line-height:1.35}.chan code{font-family:var(--mono);font-size:13px;color:var(--ac-deep)}.chan .copy-btn{margin-left:auto;width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--muted);transition:background .16s,color .16s;flex:none}.chan .copy-btn:hover{background:var(--ac-soft);color:var(--ac-deep)}.chan .copy-btn .ic{width:16px;height:16px}.chan .arrow-link{margin-left:auto;width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--ac-deep);background:var(--ac-soft);flex:none}.contact-form{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:28px 26px;box-shadow:var(--sh1)}.contact-form h3{font-size:18px;font-weight:800;letter-spacing:-.01em}.contact-form .f-sub{font-size:13px;color:var(--muted);margin-top:4px}.c-label{font-size:13px;font-weight:600;color:var(--muted);display:block;margin:16px 0 7px}.c-input{width:100%;min-height:48px;padding:12px 14px;border:1.5px solid var(--line);border-radius:12px;background:var(--bg);font-family:inherit;font-size:15px;color:var(--ink);transition:border .16s,box-shadow .16s;-webkit-appearance:none;-moz-appearance:none;appearance:none}.c-input:focus{outline:none;border-color:var(--ac1);box-shadow:0 0 0 3px var(--ac-soft)}textarea.c-input{min-height:118px;resize:vertical}.contact-form .btn{margin-top:20px;width:100%}.contact-note{margin-top:12px;font-size:12px;color:var(--muted);text-align:center}.cta-band{position:relative;border-radius:30px;background:var(--grad);color:#fff;padding:64px 40px;text-align:center;overflow:hidden;box-shadow:var(--sh3)}.cta-band:before,.cta-band:after{content:"";position:absolute;border-radius:50%;border:1.5px solid rgba(255,255,255,.22)}.cta-band:before{width:340px;height:340px;top:-160px;right:-90px}.cta-band:after{width:240px;height:240px;bottom:-130px;left:-70px}.cta-band h2{position:relative;font-size:clamp(24px,3vw,34px);font-weight:800;letter-spacing:-.02em}.cta-band p{position:relative;margin:12px auto 30px;max-width:34em;opacity:.9;font-size:15.5px}.cta-btns{position:relative;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}footer{background:#17141f;color:#ffffffb8;margin-top:96px}.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding:56px 0 40px}.foot-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:#fff;margin-bottom:12px}.foot-brand svg{width:30px;height:30px}.foot-desc{font-size:13.5px;color:#ffffff8c;max-width:30em}.foot-col h4{color:#fff;font-size:14px;margin-bottom:14px;letter-spacing:.04em}.foot-col a,.foot-col span{display:flex;align-items:center;gap:8px;font-size:13.5px;color:#ffffff9e;padding:5px 0;transition:color .16s}.foot-col a:hover{color:#fff}.foot-col .ic{width:15px;height:15px;opacity:.7}.foot-col code{font-family:var(--mono);font-size:12.5px}.foot-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0 26px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12.5px;color:#fff6}#toast{position:fixed;left:50%;bottom:34px;transform:translate(-50%) translateY(16px);z-index:99;background:var(--ink);color:#fff;padding:10px 20px;border-radius:12px;font-size:14px;opacity:0;pointer-events:none;transition:all .3s var(--ease);box-shadow:var(--sh2);max-width:86vw;text-align:center}#toast.on{opacity:1;transform:translate(-50%) translateY(0)}.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}.reveal.in{opacity:1;transform:none}.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}.d4{transition-delay:.32s}@media (max-width:1020px){.hero-grid{grid-template-columns:1fr;gap:56px;text-align:center}.hero .lead{margin-left:auto;margin-right:auto}.hero-ctas,.hero-meta{justify-content:center}.hero-visual{min-height:560px;order:2}.feat-grid,.theme-cards{grid-template-columns:repeat(2,1fr)}.foot-grid{grid-template-columns:1fr 1fr}}@media (max-width:860px){.nav-links,.theme-dots{display:none}}@media (max-width:640px){.wrap{padding:0 20px}.hero{padding:56px 0 64px}.hero-visual{min-height:0}.db1{right:-70px}.fm1{right:-6px}.section{padding:64px 0}.feat-grid,.plat-grid,.contact-grid{grid-template-columns:1fr}.theme-cards{grid-template-columns:repeat(2,1fr)}.foot-grid{grid-template-columns:1fr;gap:28px}.cta-band{padding:48px 22px;border-radius:24px}.float-msg,.hero-visual{display:none}.hero:after{content:"💻  📱  🖥️";display:block;margin-top:10px;font-size:30px;text-align:center}}@media (prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}html{scroll-behavior:auto}.reveal{opacity:1;transform:none}}