:root{--blue:#0d86f7;--blue-dark:#0768cf;--blue-soft:#edf7ff;--text:#111;--muted:#666;--line:#dedede;--surface:#f5f5f5;--curve:cubic-bezier(.2,.8,.2,1)}*{box-sizing:border-box}html{background:#f4f4f4}body{margin:0;color:var(--text);font-family:"Segoe UI","Noto Sans SC","Microsoft YaHei",Arial,sans-serif;letter-spacing:0}.upgrade-shell{min-height:100vh;background:#f7f7f7;border:1px solid #ddd}.page-head{height:58px;display:flex;align-items:center;padding:0 24px;border-bottom:1px solid #e7e7e7;background:rgba(255,255,255,.8);position:sticky;top:0;z-index:20;backdrop-filter:blur(18px)}.brand{display:flex;align-items:center;gap:9px;text-decoration:none;color:#222;font-size:15px;font-weight:650}.brand img{width:28px;height:28px}.close{margin-left:auto;width:36px;height:36px;border:0;background:transparent;border-radius:50%;position:relative;cursor:pointer;transition:background .2s,transform .2s}.close:before,.close:after{content:"";position:absolute;left:10px;top:17px;width:16px;height:1.5px;background:#777}.close:before{transform:rotate(45deg)}.close:after{transform:rotate(-45deg)}.close:hover{background:#e9e9e9;transform:rotate(6deg)}.upgrade-panel{width:min(820px,calc(100% - 32px));margin:0 auto;padding:58px 0 72px}.upgrade-panel>h1{text-align:center;font-size:30px;font-weight:500;margin:0 0 24px}.view-switch{width:350px;max-width:100%;height:46px;margin:0 auto 38px;padding:4px;background:#eaeaea;border-radius:24px;display:grid;grid-template-columns:1fr 1fr;position:relative}.view-switch button{border:0;background:transparent;z-index:1;border-radius:20px;color:#777;font-size:14px;cursor:pointer;transition:color .3s}.view-switch button.active{color:#111}.switch-indicator{position:absolute;left:4px;top:4px;width:calc(50% - 4px);height:38px;background:#fff;border-radius:20px;box-shadow:0 1px 4px rgba(0,0,0,.16);transition:transform .36s var(--curve)}.view-switch.details .switch-indicator{transform:translateX(100%)}.view{animation:viewIn .36s var(--curve)}.cycle-switch{display:flex;justify-content:center;gap:4px;margin:-18px auto 20px}.cycle-switch button,.product-filter button{border:1px solid transparent;background:transparent;border-radius:18px;padding:7px 13px;color:#777;cursor:pointer;transition:.25s}.cycle-switch button.active,.product-filter button.active{color:var(--blue-dark);background:#e2f1ff}.cycle-switch span{font-size:11px;color:#15803d}.plan-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.plan-card{min-height:690px;border:1px solid var(--line);border-radius:24px;padding:26px 24px;background:#fff;position:relative;box-shadow:0 1px 2px rgba(0,0,0,.02);animation:cardUp .5s var(--curve) both}.pro-card{background:var(--blue-soft);border-color:#b9dffc;animation-delay:.08s}.recommended{position:absolute;right:22px;top:22px;background:#d9edff;color:#0872dc;border-radius:99px;padding:5px 9px;font-size:11px}.plan-label{font-size:17px;font-weight:700}.plan-card h2{font-size:27px;line-height:1.2;margin:28px 0 7px}.subtitle{color:var(--muted);margin:0;min-height:45px}.price{display:flex;align-items:baseline;gap:6px;margin:43px 0 22px}.price strong{font-size:52px;font-weight:400}.price span{color:#555}.plan-card>button{width:100%;height:44px;border-radius:22px;font-weight:600}.current{border:1px solid #ddd;background:#fff;color:#999}.upgrade{border:0;background:var(--blue);color:#fff;cursor:pointer;transition:background .2s,transform .2s,box-shadow .2s}.upgrade:hover{background:var(--blue-dark);box-shadow:0 6px 18px rgba(13,134,247,.25);transform:translateY(-1px)}.feature-title{font-size:14px;margin:34px 0 16px}.plan-card ul{padding:0;margin:0;list-style:none;display:grid;gap:17px}.plan-card li{display:flex;gap:12px;align-items:flex-start;font-size:14px;line-height:1.4}.plan-card li i{font-style:normal;width:20px;flex:0 0 20px;text-align:center;color:#222}.pro-card li i{color:#0872dc;font-weight:700}.detail-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:24px}.detail-head h2{font-size:25px;margin:0 0 6px}.detail-head p{margin:0;color:var(--muted)}.product-filter{display:flex;gap:2px;background:#ececec;border-radius:22px;padding:3px;overflow:auto}.product-filter button{white-space:nowrap}.benefit-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}.benefit-list article{display:flex;gap:16px;border:1px solid var(--line);background:#fff;border-radius:20px;padding:20px;min-height:156px;transition:transform .25s,border-color .25s;animation:cardUp .35s var(--curve) both}.benefit-list article:hover{transform:translateY(-2px);border-color:#a9d4fa}.benefit-list article.hidden{display:none}.product{width:42px;height:42px;flex:0 0 42px;border-radius:13px;display:grid;place-items:center;font-weight:700}.social{background:#e8f0fe;color:#1967d2}.developer{background:#fce8e6;color:#c5221f}.play{background:#e6f4ea;color:#137333}.mail{background:#fef7e0;color:#b06000}.ai{background:#f3e8fd;color:#8430ce}.benefit-list small{color:#777}.benefit-list h3{font-size:16px;margin:7px 0}.benefit-list p{font-size:13px;color:var(--muted);line-height:1.55;margin:0}.comparison{margin-top:20px;border:1px solid var(--line);border-radius:20px;overflow:hidden;background:#fff}.compare-row{display:grid;grid-template-columns:1.2fr 1fr 1fr;padding:15px 20px;border-bottom:1px solid #eee;font-size:13px}.compare-row:last-child{border:0}.compare-row span,.compare-row strong{text-align:center}.compare-row strong{color:#0872dc}.compare-title{background:#f4f4f4;color:#666}.notice{font-size:13px;line-height:1.6;color:#137333;background:#e8f5ec;border-radius:16px;padding:14px 18px}.toast{position:fixed;left:50%;bottom:26px;transform:translate(-50%,16px);opacity:0;background:#222;color:#fff;border-radius:12px;padding:12px 18px;font-size:13px;transition:.3s;pointer-events:none}.toast.show{opacity:1;transform:translate(-50%,0)}@keyframes viewIn{from{opacity:0;transform:translateY(8px)}}@keyframes cardUp{from{opacity:0;transform:translateY(14px)}}@media(max-width:680px){.page-head{height:54px;padding:0 14px}.upgrade-panel{width:min(100% - 24px,500px);padding:36px 0 48px}.upgrade-panel>h1{font-size:25px}.view-switch{margin-bottom:28px}.plan-grid{grid-template-columns:1fr}.plan-card{min-height:0;border-radius:20px;padding:23px 20px}.plan-card h2{font-size:24px}.price{margin:30px 0 19px}.price strong{font-size:45px}.detail-head{display:block}.product-filter{margin-top:18px}.benefit-list{grid-template-columns:1fr}.compare-row{grid-template-columns:1fr .8fr .9fr;padding:13px 12px;font-size:12px}.toast{white-space:nowrap;bottom:18px}}