.vr a{color:#cf3a4f;text-decoration:none}.vr{--ink:#1d1d1f;--text:#3a3a3c;--muted:#6e6e73;--line:#e3e3e8;--surface:#f5f5f7;--coral:#f05869;--coral-ink:#cf3a4f;--coral-press:#b3304a;--green:#14532d;--green-bg:#e6f6ec;--deal:#b42318;--ease:cubic-bezier(.2,.8,.2,1);--spring:cubic-bezier(.3,1.25,.4,1);font-family:var(--v-font);font-optical-sizing:auto;color:var(--text);-webkit-font-smoothing:antialiased;font-size:17px;line-height:1.5;overflow-x:clip}.vr *{box-sizing:border-box}.vr h1,.vr h2,.vr h3,.vr h4,.vr p{margin:0}.vr .wrap{max-width:1180px;margin:0 auto;padding:0 24px}.vr .eyebrow{color:var(--coral-ink);font-size:15px;font-weight:600}.vr .h2{letter-spacing:-.036em;color:var(--ink);font-size:clamp(32px,4.4vw,54px);font-weight:800;line-height:1.04}.vr .lead{color:var(--muted);font-size:clamp(18px,1.9vw,21px);line-height:1.45}.vr .small{color:var(--muted);font-size:14px;line-height:1.45}.vr .btn{background:var(--coral-ink);color:#fff;min-height:48px;font:600 16px/1 var(--v-font);cursor:pointer;transition:transform .12s var(--ease),background-color .16s;white-space:nowrap;border:0;border-radius:999px;justify-content:center;align-items:center;gap:8px;padding:0 24px;display:inline-flex}.vr .btn:hover{background:var(--coral-press);color:#fff}.vr .btn:active{transform:scale(.96)}.vr .btn.ghost{color:var(--coral-ink);background:0 0;box-shadow:inset 0 0 0 1.5px}.vr .btn.ghost:hover{color:var(--coral-press);background:#cf3a4f12}.vr .btn.light{color:#1d1d1f;background:#fff}.vr .btn.light:hover{color:#1d1d1f;background:#ececef}.vr .btn.ink{background:var(--ink)}.vr .btn.ink:hover{background:#000}.vr .btn.sm{min-height:44px;padding:0 18px;font-size:15px}@keyframes rise{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}@keyframes pop{0%{transform:scale(1)}40%{transform:scale(1.06)}to{transform:scale(1)}}@keyframes fanIn{0%{opacity:0;transform:translate(0)translateY(60px)rotate(0)}to{opacity:1}}@keyframes glow{0%,to{box-shadow:0 0 #f0586900,0 24px 60px #0000000f}50%{box-shadow:0 0 0 6px #f0586924,0 24px 60px #0000000f}}@keyframes grow{0%{transform:scaleX(0)}to{transform:scaleX(1)}}.vr .in1{animation:rise .8s var(--ease) both 60ms}.vr .in2{animation:rise .8s var(--ease) both .18s}.vr .in3{animation:rise .8s var(--ease) both .3s}@supports (animation-timeline:view()){.vr .rv{animation:linear both rise;animation-timeline:view();animation-range:entry 5% cover 25%}.vr .bar i{animation:linear both grow;animation-timeline:view();animation-range:entry 10% cover 40%}}.vr .hero{color:var(--ink);background:linear-gradient(#fff8f1 0%,#fff1e8 60%,#ffe9e2 100%);padding:48px 0 0;position:relative;overflow:hidden}.vr .hero:before{content:"";pointer-events:none;background:radial-gradient(38% 46% at 50% 72%,#f0586938,#0000 70%),radial-gradient(28% 36% at 12% 22%,#ffc47859,#0000 70%),radial-gradient(28% 36% at 90% 18%,#00bcf224,#0000 70%);height:120%;position:absolute;inset:-10% -10% auto}.vr .hero .wrap{text-align:center;flex-direction:column;align-items:center;gap:16px;display:flex;position:relative}.vr .crumbs{color:var(--muted);font-size:13px}.vr .crumbs a{color:var(--muted)}.vr .kicker{letter-spacing:-.01em;color:var(--ink);flex-wrap:wrap;justify-content:center;align-items:center;gap:10px;font-size:clamp(17px,1.8vw,21px);font-weight:700;display:flex}.vr .kicker span{letter-spacing:.06em;color:#fff;background:#1d1d1f;border-radius:999px;padding:5px 10px;font-size:12px;font-weight:800}.vr .display{letter-spacing:-.05em;max-width:1000px;color:var(--ink);font-size:clamp(42px,7vw,96px);font-weight:800;line-height:.98}.vr .display em{color:var(--coral-ink);font-style:normal}.vr .hsub{color:var(--text);max-width:700px;font-size:clamp(17px,1.9vw,21px);line-height:1.45}.vr .hctas{flex-wrap:wrap;justify-content:center;gap:10px;margin-top:6px;display:flex}.vr .hfrom{color:var(--muted);font-size:14px}.vr .hfrom b{color:var(--ink)}.vr .fan{width:100%;max-width:1000px;height:400px;margin-top:16px;position:relative}.vr .bk{cursor:pointer;transform-origin:50% 120%;width:184px;transition:transform .52s var(--spring);animation:fanIn .9s var(--ease) both;filter:drop-shadow(0 26px 30px #78281e38);background:0 0;border:0;margin-left:-92px;padding:0;position:absolute;bottom:-70px;left:50%}.vr .bk img{border-radius:6px;width:100%;height:auto;display:block}.vr .bk .tick{color:#fff;width:30px;height:30px;animation:pop .36s var(--ease);background:#1f9d55;border-radius:99px;justify-content:center;align-items:center;display:flex;position:absolute;top:10px;right:10px;box-shadow:0 4px 12px #00000040}.vr .bk .lbl{white-space:nowrap;color:#fff;opacity:0;background:#1d1d1f;border-radius:999px;padding:6px 12px;font-size:12.5px;font-weight:700;transition:opacity .2s;position:absolute;top:-40px;left:50%;transform:translate(-50%)}.vr .bk:hover .lbl,.vr .bk:focus-visible .lbl{opacity:1}.vr .bk:focus-visible{outline:3px solid var(--coral-ink);outline-offset:6px}.vr .fan-hint{z-index:2;color:var(--text);margin:-4px 0 0;font-size:13.5px;font-weight:600;position:relative}.vr .hstrip{z-index:2;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);background:#ffffffc7;border-top:1px solid #cf3a4f1a;width:100%;position:relative}.vr .hstrip-in{text-align:left;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;max-width:1180px;margin:0 auto;padding:18px 24px;display:grid}.vr .hstrip b{letter-spacing:-.02em;color:var(--ink);font-size:20px;display:block}.vr .hstrip span{color:var(--muted);font-size:13.5px;line-height:1.4}.vr .solve{background:#fff;padding:96px 0}.vr .sec-head{text-align:center;flex-direction:column;align-items:center;gap:14px;max-width:780px;margin:0 auto 44px;display:flex}.vr .vs{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;max-width:1000px;margin:0 auto;display:grid}.vr .vs-card{border-radius:28px;flex-direction:column;gap:14px;padding:30px;display:flex}.vr .vs-card.before{background:var(--surface)}.vr .vs-card h3{letter-spacing:-.02em;font-size:22px;font-weight:800}.vr .vs-card.before h3{color:var(--muted)}.vr .vs-card ul{flex-direction:column;gap:12px;margin:0;padding:0;list-style:none;display:flex}.vr .vs-card li{gap:10px;font-size:16px;line-height:1.45;display:flex}.vr .vs-card.before li{color:var(--muted)}.vr .vs-card.before li svg{color:#a1a1aa;flex:none;margin-top:3px}.vr .vs-card.after li svg{color:#4ade80;flex:none;margin-top:3px}.vr .buy{background:linear-gradient(#fbf7f8,#fff 340px);padding:88px 0 96px;scroll-margin-top:56px}.vr .steps{flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;margin:0 auto 36px;display:flex}.vr .stp{color:var(--muted);align-items:center;gap:8px;font-size:14px;font-weight:700;display:flex}.vr .stp i{width:26px;height:26px;color:var(--muted);background:#efeff2;border-radius:99px;justify-content:center;align-items:center;font-size:13px;font-style:normal;display:inline-flex}.vr .stp.on{color:var(--ink)}.vr .stp.on i{background:var(--ink);color:#fff}.vr .stp.done i{color:#fff;background:#1f9d55}.vr .stp-line{background:#e3e3e8;border-radius:2px;width:44px;height:2px}.vr .buy-grid{grid-template-columns:minmax(0,1fr) 350px;align-items:start;gap:32px;display:grid}.vr .panel{background:#fff;border-radius:30px;padding:28px;box-shadow:0 1px 2px #0000000a,0 24px 60px #0000000f}.vr .panel.attn{animation:glow 2.6s var(--ease) 3}.vr .ph{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:18px;display:flex}.vr .ph h3{letter-spacing:-.025em;color:var(--ink);font-size:clamp(22px,2.4vw,28px);font-weight:800}.vr .ph h3 i{color:var(--coral-ink);margin-right:8px;font-style:normal}.vr .ph p{color:var(--muted);font-size:14px}.vr .fgrid{gap:14px;display:grid}.vr .fgrid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.vr .fgrid.three{grid-template-columns:minmax(0,1fr) minmax(0,1.18fr) minmax(0,1fr);align-items:center}.vr .fcard.star{background:linear-gradient(#fff6f0,#fff);padding:26px 22px;box-shadow:0 0 0 1.5px #cf3a4f59,0 20px 44px #cf3a4f24}.vr .fcard.star.on{box-shadow:inset 0 0 0 2.5px var(--coral-ink),0 22px 48px #cf3a4f33}.vr .fcard.star h4{font-size:21px}.vr .fcard.star .fprice b{font-size:24px}.vr .fcard .worth{color:var(--green);background:var(--green-bg);border-radius:10px;align-self:flex-start;padding:6px 9px;font-size:13px;font-weight:700}.vr .fcard .hint{color:var(--coral-ink);font-size:12.5px;font-weight:700}.vr .fcard{text-align:left;cursor:pointer;background:var(--surface);font:inherit;color:var(--text);transition:transform .2s var(--ease),box-shadow .24s var(--ease),background-color .24s;border:0;border-radius:22px;flex-direction:column;gap:10px;padding:20px;display:flex;position:relative}.vr .fcard:active{transform:scale(.98)}.vr .fcard.on{box-shadow:inset 0 0 0 2.5px var(--ink),0 16px 36px #00000014;background:#fff}.vr .fcard .ftop{align-items:center;gap:12px;display:flex}.vr .fic{width:48px;height:48px;color:var(--ink);background:#fff;border-radius:14px;flex:none;justify-content:center;align-items:center;display:flex;box-shadow:0 0 0 .5px #00000014}.vr .fcard.on .fic{background:var(--ink);color:#fff}.vr .fcard h4{letter-spacing:-.015em;color:var(--ink);font-size:19px;font-weight:800;line-height:1.2}.vr .fcard .radio{border-radius:99px;flex:none;justify-content:center;align-items:center;width:24px;height:24px;margin-left:auto;display:flex;box-shadow:inset 0 0 0 2px #c7c7cc}.vr .fcard.on .radio{box-shadow:none;background:var(--ink);color:#fff}.vr .fcard.star.on .radio{background:var(--coral-ink)}.vr .fcard ul{flex-direction:column;gap:6px;margin:0;padding:0;list-style:none;display:flex}.vr .fcard li{gap:8px;font-size:14px;line-height:1.4;display:flex}.vr .fcard li svg{color:var(--green);flex:none;margin-top:2px}.vr .fprice{border-top:1px solid var(--line);flex-wrap:wrap;align-items:baseline;gap:8px;padding-top:10px;display:flex}.vr .fprice b{color:var(--ink);letter-spacing:-.02em;font-size:20px}.vr .fprice s{color:var(--muted);font-size:14px}.vr .off{color:var(--deal);font-size:12.5px;font-weight:800}.vr .ribbon{letter-spacing:.05em;color:#fff;background:linear-gradient(100deg,#cf3a4f,#8650a0);border-radius:999px;padding:5px 11px;font-size:11px;font-weight:800;position:absolute;top:-11px;right:16px;box-shadow:0 6px 14px #cf3a4f4d}.vr .upsell{color:var(--ink);animation:rise .4s var(--ease) both;background:#fff7ed;border-radius:16px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-top:14px;padding:14px 16px;font-size:15px;display:flex}.vr .upsell b{font-weight:800}.vr .valid{flex-direction:column;gap:10px;margin-top:18px;display:flex}.vr .valid p{color:var(--ink);font-size:14px;font-weight:700}.vr .vopts{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.vr .vopt{cursor:pointer;text-align:left;background:var(--surface);font:inherit;border:0;border-radius:16px;flex-direction:column;gap:3px;padding:14px 16px;transition:box-shadow .2s,background-color .2s;display:flex}.vr .vopt.on{box-shadow:inset 0 0 0 2px var(--ink);background:#fff}.vr .vopt b{color:var(--ink);font-size:15.5px}.vr .vopt span{color:var(--muted);font-size:13px}.vr .vopt em{letter-spacing:.04em;color:var(--green);background:var(--green-bg);border-radius:999px;align-self:flex-start;margin-top:2px;padding:2px 8px;font-size:11px;font-style:normal;font-weight:800}.vr .gap{height:18px}.vr .combos{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.vr .combos.one{grid-template-columns:minmax(0,1fr)}.vr .combo{background:var(--surface);text-align:center;transition:box-shadow .24s var(--ease),background-color .24s;border-radius:22px;flex-direction:column;align-items:center;gap:10px;padding:18px;display:flex;position:relative}.vr .combos.one .combo{text-align:left;flex-direction:row;padding:20px 24px}.vr .combo.on{box-shadow:inset 0 0 0 2.5px var(--ink),0 14px 34px #00000014;background:#fff}.vr .combo img{-o-object-fit:contain;object-fit:contain;filter:drop-shadow(0 10px 16px #00000024);flex:none;width:118px;height:150px}.vr .combo .cbody{flex-direction:column;flex:1;align-items:center;gap:6px;min-width:0;display:flex}.vr .combos.one .combo .cbody{align-items:flex-start}.vr .combo h4{letter-spacing:-.015em;color:var(--ink);font-size:18px;font-weight:800}.vr .combo .papers{color:var(--muted);font-size:12.5px;line-height:1.4}.vr .cp{flex-wrap:wrap;justify-content:center;align-items:baseline;gap:8px;display:flex}.vr .combos.one .cp{justify-content:flex-start}.vr .cp b{color:var(--ink);letter-spacing:-.02em;font-size:24px}.vr .cp s{color:var(--muted);font-size:14px}.vr .save{color:var(--green);background:var(--green-bg);border-radius:999px;padding:4px 10px;font-size:12.5px;font-weight:800;display:inline-flex}.vr .flag{letter-spacing:.05em;color:#fff;background:#1d1d1f;border-radius:999px;padding:4px 9px;font-size:10.5px;font-weight:800;position:absolute;top:12px;left:12px}.vr .add{cursor:pointer;min-width:120px;min-height:44px;font:700 15px/1 var(--v-font);transition:transform .12s var(--ease),background-color .2s,color .2s;border:0;border-radius:999px;justify-content:center;align-items:center;gap:8px;padding:0 18px;display:inline-flex}.vr .add:active{transform:scale(.95)}.vr .add.off{background:var(--coral-ink);color:#fff}.vr .add.off:hover{background:var(--coral-press)}.vr .add.on{background:var(--green-bg);color:var(--green);animation:pop .36s var(--ease)}.vr .add.cov{color:var(--muted);cursor:default;background:#efeff2}.vr .capx{text-align:left;cursor:pointer;width:100%;font:inherit;background:#fff7ed;border:0;border-radius:14px;align-items:center;gap:10px;padding:10px 12px;transition:background-color .2s,box-shadow .2s;display:flex}.vr .capx.on{background:#fff;box-shadow:inset 0 0 0 2px #b45309}.vr .capx img{-o-object-fit:contain;object-fit:contain;filter:drop-shadow(0 4px 8px #0000002e);flex:none;width:34px;height:48px}.vr .capx span{flex-direction:column;flex:1;gap:1px;min-width:0;display:flex}.vr .capx b{color:var(--ink);font-size:13.5px;line-height:1.25}.vr .capx small{color:#92400e;font-size:12px;line-height:1.3}.vr .capx i{color:#fff;border-radius:6px;flex:none;justify-content:center;align-items:center;width:22px;height:22px;font-style:normal;display:flex;box-shadow:inset 0 0 0 2px #b45309}.vr .capx.on i{box-shadow:none;background:#b45309}.vr .nudge{animation:rise .5s var(--ease) both;background:linear-gradient(100deg,#fff4e5,#fdf1f3);border-radius:18px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px;margin-top:16px;padding:16px 18px;display:flex}.vr .nudge p{color:var(--ink);flex:1;min-width:240px;font-size:15px;line-height:1.45}.vr .nudge p b{font-weight:800}.vr .nudge svg{color:#b45309;flex:none}.vr .subjects{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.vr .subj{background:var(--surface);transition:box-shadow .24s var(--ease),background-color .24s;border-radius:22px;flex-direction:column;display:flex;overflow:hidden}.vr .subj.on{box-shadow:inset 0 0 0 2.5px var(--ink),0 14px 34px #00000014;background:#fff}.vr .subj .art{background:linear-gradient(160deg,#fdf1f3,#eef6fb);justify-content:center;align-items:flex-end;height:180px;padding-top:16px;display:flex}.vr .subj .art img{filter:drop-shadow(0 12px 18px #00000029);width:auto;height:164px;transition:transform .5s var(--ease);display:block;transform:translateY(14px)}.vr .subj:hover .art img{transform:translateY(6px)}.vr .subj .sb{flex-direction:column;flex:1;gap:8px;padding:14px 16px 16px;display:flex}.vr .paper{letter-spacing:.06em;color:var(--coral-ink);font-size:12px;font-weight:800}.vr .subj h4{letter-spacing:-.015em;color:var(--ink);flex:1;font-size:16.5px;font-weight:800;line-height:1.25}.vr .sprice{flex-wrap:wrap;align-items:baseline;gap:7px;display:flex}.vr .sprice b{color:var(--ink);letter-spacing:-.015em;font-size:20px}.vr .sprice s{color:var(--muted);font-size:13px}.vr .meta{justify-content:space-between;gap:8px;font-size:13px;display:flex}.vr .meta a{font-weight:600}.vr .stock{color:#b45309;font-weight:700}.vr .subj .add{width:100%}.vr .sum{background:#fff;border-radius:26px;flex-direction:column;gap:14px;padding:22px;display:flex;position:sticky;top:76px;box-shadow:0 1px 2px #0000000a,0 24px 60px #00000014,0 0 0 .5px #0000000f}.vr .sum h3{color:var(--ink);letter-spacing:-.015em;justify-content:space-between;align-items:baseline;font-size:19px;font-weight:800;display:flex}.vr .sum h3 span{color:var(--muted);text-align:right;font-size:12.5px;font-weight:600}.vr .lines{flex-direction:column;gap:10px;display:flex}.vr .line{color:var(--text);justify-content:space-between;gap:12px;font-size:14.5px;display:flex}.vr .line b{color:var(--ink);white-space:nowrap;font-weight:700}.vr .line small{color:var(--muted);font-size:12px;display:block}.vr .line button{color:var(--muted);font:500 12.5px var(--v-font);cursor:pointer;text-underline-offset:2px;background:0 0;border:0;min-height:24px;margin-left:6px;padding:0;text-decoration:underline}.vr .empty-sum{color:var(--muted);background:var(--surface);border-radius:16px;padding:16px;font-size:14.5px;line-height:1.5}.vr .tot{border-top:1px solid var(--line);flex-direction:column;gap:7px;padding-top:12px;display:flex}.vr .tot .line.big{font-size:17px}.vr .tot .line.big b{letter-spacing:-.02em;font-size:26px}.vr .dline,.vr .dline b{color:var(--green)}.vr .youSave{background:var(--green-bg);color:var(--green);text-align:center;border-radius:14px;padding:10px 12px;font-size:14.5px;font-weight:800}.vr .code{color:var(--text);font-size:13.5px}.vr .pair{color:var(--text);align-items:flex-start;gap:8px;font-size:13.5px;line-height:1.45;display:flex}.vr .pair svg{color:var(--coral-ink);flex:none;margin-top:2px}.vr .assure{color:var(--muted);flex-direction:column;gap:6px;font-size:12.5px;display:flex}.vr .assure span{align-items:center;gap:7px;display:flex}.vr .mbar{display:none}.vr .edition{background:#fff;padding:0 0 96px}.vr .ed-card{color:#fff;background:#0b0b0d;border-radius:36px;grid-template-columns:minmax(0,1fr) minmax(0,.9fr);align-items:center;display:grid;position:relative;overflow:hidden}.vr .ed-card:before{content:"";pointer-events:none;background:radial-gradient(50% 70% at 80%,#8650a073,#0000 70%),radial-gradient(40% 60% at 95% 90%,#f0586959,#0000 70%);position:absolute;inset:0}.vr .ed-copy{flex-direction:column;gap:18px;padding:56px;display:flex;position:relative}.vr .ed-copy .tag{letter-spacing:.06em;background:linear-gradient(100deg,#29b6f6,#a06cc8 50%,#f05869);border-radius:999px;align-self:flex-start;padding:6px 12px;font-size:12px;font-weight:800}.vr .ed-copy h2{letter-spacing:-.04em;font-size:clamp(34px,4.6vw,58px);font-weight:800;line-height:1.02}.vr .ed-list{flex-direction:column;gap:14px;margin-top:4px;display:flex}.vr .ed-list div{gap:14px;display:flex}.vr .ed-list i{color:#ff8a98;background:#ffffff1f;border-radius:10px;flex:none;justify-content:center;align-items:center;width:32px;height:32px;font-style:normal;display:flex}.vr .ed-list b{color:#fff;font-size:17px;display:block}.vr .ed-list span{color:#ffffffad;font-size:14.5px;line-height:1.45}.vr .ed-art{justify-content:center;padding:40px;display:flex;position:relative}.vr .ed-art img{filter:drop-shadow(0 40px 60px #0009);width:100%;max-width:440px;height:auto}.vr .helped{background:var(--surface);padding:96px 0}.vr .hgrid{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);align-items:stretch;gap:20px;display:grid}.vr .bars{background:#fff;border-radius:28px;flex-direction:column;gap:24px;padding:32px;display:flex}.vr .bar-row{flex-direction:column;gap:8px;display:flex}.vr .bar-top{justify-content:space-between;align-items:baseline;gap:16px;display:flex}.vr .bar-top b{letter-spacing:-.04em;color:var(--ink);font-size:clamp(36px,4vw,52px);font-weight:800;line-height:1}.vr .bar-top span{color:var(--text);text-align:right;max-width:330px;font-size:15.5px;line-height:1.4}.vr .bar{background:#efeff2;border-radius:99px;height:12px;overflow:hidden}.vr .bar i{transform-origin:0;background:linear-gradient(90deg,#cf3a4f,#8650a0);border-radius:99px;height:100%;display:block}.vr .big-stat{color:#fff;background:#0b0b0d;border-radius:28px;flex-direction:column;justify-content:space-between;gap:20px;padding:32px;display:flex}.vr .big-stat b{letter-spacing:-.05em;font-size:clamp(56px,7vw,92px);font-weight:800;line-height:.95}.vr .big-stat p{color:#ffffffbf;font-size:17px;line-height:1.5}.vr .reviews{text-align:center;color:var(--muted);background:#fff;border:1.5px dashed #c9c9d1;border-radius:24px;margin-top:20px;padding:24px;font-size:15px}.vr .howto{padding:96px 0}.vr .hw-grid{grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);align-items:center;gap:40px;display:grid}.vr .video{aspect-ratio:16/9;background:#111;border-radius:28px;justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}.vr .video img{-o-object-fit:cover;object-fit:cover;opacity:.55;width:100%;height:100%;position:absolute;inset:0}.vr .video button{color:#1d1d1f;cursor:pointer;width:84px;height:84px;transition:transform .16s var(--ease);background:#ffffffeb;border:0;border-radius:99px;justify-content:center;align-items:center;display:flex;position:relative;box-shadow:0 20px 40px #00000059}.vr .video button:active{transform:scale(.94)}.vr .video .vcap{color:#fff;text-shadow:0 2px 10px #00000080;font-size:15px;font-weight:700;position:absolute;bottom:18px;left:20px}.vr .hsteps{counter-reset:s;flex-direction:column;gap:6px;display:flex}.vr .hstep{border-bottom:1px solid var(--line);gap:16px;padding:16px 0;display:flex}.vr .hstep:last-child{border-bottom:0}.vr .hstep i{background:var(--surface);width:36px;height:36px;color:var(--coral-ink);border-radius:12px;flex:none;justify-content:center;align-items:center;font-style:normal;font-weight:800;display:flex}.vr .hstep b{color:var(--ink);letter-spacing:-.01em;font-size:17px;display:block}.vr .hstep span{color:var(--text);font-size:15px;line-height:1.5}.vr .deep{padding:24px 0 40px}.vr .feat{border-top:1px solid var(--line);grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:center;gap:56px;padding:56px 0;display:grid}.vr .feat.flip .f-art{order:2}.vr .f-art{background:var(--surface);aspect-ratio:5/4;border-radius:28px;justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}.vr .f-art img{-o-object-fit:cover;object-fit:cover;-o-object-position:top center;object-position:top center;width:100%;height:100%;display:block}.vr .f-copy{flex-direction:column;gap:14px;display:flex}.vr .f-copy .n{letter-spacing:.06em;color:var(--coral-ink);font-size:13px;font-weight:800}.vr .f-copy h3{letter-spacing:-.032em;color:var(--ink);font-size:clamp(28px,3.2vw,40px);font-weight:800;line-height:1.08}.vr .f-copy p{color:var(--text);font-size:17px;line-height:1.55}.vr .helps{color:#14532d;background:#f0faf3;border-radius:16px;padding:14px 16px;font-size:15px;line-height:1.5}.vr .helps b{font-weight:800}.vr .chips{flex-wrap:wrap;gap:8px;padding:28px;display:flex}.vr .chip{color:var(--ink);background:#fff;border-radius:12px;padding:10px 14px;font-size:14px;font-weight:600;box-shadow:0 1px 2px #0000000d}.vr .chip small{color:var(--muted);font-size:12px;font-weight:500;display:block}.vr .mini-q{width:82%;color:var(--text);background:#fff;border-radius:18px;flex-direction:column;gap:10px;padding:20px;font-size:14.5px;display:flex;box-shadow:0 20px 40px #00000014}.vr .mini-q .refs{flex-wrap:wrap;gap:6px;display:flex}.vr .mini-q .refs span{letter-spacing:.03em;color:#0b5394;background:#eef6fb;border-radius:999px;padding:4px 9px;font-size:11.5px;font-weight:800}.vr .mini-q .refs span.m{color:#b3304a;background:#fdf1f3}.vr .mini-q .dup{color:#92400e;background:#fff7ed;border-radius:10px;padding:8px 10px;font-size:12.5px}.vr .ladder-v{flex-direction:column;gap:8px;width:72%;display:flex}.vr .ladder-v div{color:#fff;border-radius:12px;padding:12px 14px;font-size:14px;font-weight:700}.vr .fresh{flex-direction:column;gap:10px;width:80%;display:flex}.vr .fresh div{color:var(--ink);background:#fff;border-radius:14px;align-items:center;gap:10px;padding:14px 16px;font-size:14.5px;font-weight:600;display:flex;box-shadow:0 1px 2px #0000000d}.vr .fresh i{color:#fff;background:#1f9d55;border-radius:999px;padding:3px 8px;font-size:11px;font-style:normal;font-weight:800}.vr .mid-cta{color:#fff;background:#0b0b0d;border-radius:28px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px;margin:16px 0 0;padding:28px 32px;display:flex}.vr .mid-cta b{letter-spacing:-.02em;font-size:clamp(20px,2.4vw,28px)}.vr .mid-cta span{color:#ffffffb3;letter-spacing:0;margin-top:4px;font-size:14.5px;font-weight:400;display:block}.vr .prep{background:linear-gradient(#fff,#f7f4f9);padding:96px 0}.vr .ladder{grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;display:grid}.vr .rung{background:#fff;border-radius:24px;flex-direction:column;gap:10px;padding:22px;display:flex;box-shadow:0 1px 2px #0000000a,0 14px 34px #0000000d}.vr .rung.here{color:#fff;box-shadow:none;background:#1d1d1f}.vr .rung.here h4,.vr .rung.here b{color:#fff}.vr .rung.here p{color:#ffffffbf}.vr .rung .stepn{letter-spacing:.06em;color:var(--coral-ink);font-size:12px;font-weight:800}.vr .rung h4{letter-spacing:-.015em;color:var(--ink);font-size:19px;font-weight:800}.vr .rung p{color:var(--text);flex:1;font-size:14.5px;line-height:1.5}.vr .rung b{color:var(--ink);font-size:15px}.vr .rung a.go{align-items:center;min-height:44px;font-size:15px;font-weight:700;display:inline-flex}.vr .rung .youre{letter-spacing:.05em;color:#1d1d1f;background:#fff;border-radius:999px;align-self:flex-start;padding:4px 9px;font-size:11px;font-weight:800;display:inline-flex}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideIn{0%{transform:translate(100%)}to{transform:none}}.vr .faq-sec{padding:96px 0 80px}.vr .faq{border-top:1px solid var(--line);max-width:840px;margin:0 auto}.vr .faq-item{border-bottom:1px solid var(--line)}.vr .faq-q{text-align:left;cursor:pointer;width:100%;font:700 19px/1.35 var(--v-font);letter-spacing:-.012em;color:var(--ink);background:0 0;border:0;justify-content:space-between;align-items:center;gap:24px;min-height:44px;padding:22px 0;display:flex}.vr .faq-ic{background:var(--surface);width:32px;height:32px;color:var(--ink);transition:transform .4s var(--ease),background-color .2s;border-radius:999px;flex:none;justify-content:center;align-items:center;display:flex}.vr .faq-body{transition:grid-template-rows .45s var(--ease),opacity .3s;display:grid}.vr .faq-body>div{overflow:hidden}.vr .faq-a{color:var(--text);padding:0 56px 24px 0;font-size:16px;line-height:1.6}.vr .levels{padding:0 0 96px}.vr .lgrid{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.vr .lcard{background:var(--surface);color:var(--ink);transition:transform .24s var(--ease),box-shadow .24s;border-radius:22px;align-items:center;gap:16px;padding:20px;display:flex}.vr .lcard:hover{color:var(--ink);transform:translateY(-3px);box-shadow:0 14px 30px #00000012}.vr .lcard img{-o-object-fit:contain;object-fit:contain;flex:none;width:64px;height:64px}.vr .lcard b{font-size:17px;display:block}.vr .lcard span{color:var(--muted);font-size:13.5px}@media (max-width:1100px){.vr .buy-grid{grid-template-columns:minmax(0,1fr) 310px}.vr .subjects,.vr .ladder{grid-template-columns:repeat(2,minmax(0,1fr))}.vr .fgrid.three{grid-template-columns:minmax(0,1fr)}}@media (max-width:1023px){.vr .hstrip-in{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:899px){.vr .buy-grid{grid-template-columns:minmax(0,1fr)}.vr .sum-col{display:none}.vr .mbar{z-index:55;-webkit-backdrop-filter:blur(20px)saturate(180%);backdrop-filter:blur(20px)saturate(180%);padding:10px 20px calc(10px + env(safe-area-inset-bottom));background:#ffffffe0;border-radius:18px 18px 0 0;justify-content:space-between;align-items:center;gap:12px;margin-top:24px;display:flex;position:sticky;bottom:0;box-shadow:0 -1px #0000000f}.vr .combos{grid-template-columns:minmax(0,1fr)}.vr .combo{text-align:left;flex-direction:row}.vr .combo .cbody,.vr .cp{justify-content:flex-start;align-items:flex-start}.vr .combo img{width:84px;height:108px}.vr .vs,.vr .hgrid,.vr .hw-grid,.vr .feat,.vr .ed-card{grid-template-columns:minmax(0,1fr)}.vr .feat.flip .f-art{order:0}.vr .feat{gap:24px;padding:40px 0}.vr .ed-art{padding:0 28px 32px}.vr .ed-copy{padding:32px 28px}.vr .lgrid{grid-template-columns:minmax(0,1fr)}}@media (max-width:767px){.vr{font-size:16px}.vr .wrap{padding-left:20px;padding-right:20px}.vr .hero{padding-top:28px}.vr .fan{height:250px}.vr .bk{width:120px;margin-left:-60px;bottom:-44px}.vr .hstrip-in{padding:14px 20px}.vr .hstrip b{font-size:17px}.vr .solve,.vr .buy,.vr .helped,.vr .howto,.vr .prep,.vr .faq-sec{padding-top:64px;padding-bottom:64px}.vr .panel{border-radius:24px;padding:18px}.vr .fgrid.two{grid-template-columns:minmax(0,1fr)}.vr .fcard ul{display:none}.vr .stp-line{width:16px}.vr .subjects{gap:10px}.vr .subj .art{height:140px}.vr .subj .art img{height:128px}.vr .subj .sb{padding:12px}.vr .subj h4{font-size:15px}.vr .ladder{grid-template-columns:minmax(0,1fr)}.vr .bars,.vr .big-stat{padding:22px}.vr .faq-a{padding-right:0}.vr .faq-q{font-size:17px}}@media (prefers-reduced-motion:reduce){.vr *{transition:none!important;animation:none!important}}@media (prefers-reduced-transparency:reduce){.vr .hstrip{background:#1d1d1f!important}}.vr{background:#fff}.vr .mbar button.peek{text-align:left;cursor:pointer;font:inherit;background:0 0;border:0;flex-direction:column;justify-content:center;min-height:44px;padding:0;display:flex}.vr .mbar button.peek b{color:var(--ink);font-size:19px}.vr .mbar button.peek span{color:var(--green);font-size:12.5px;font-weight:700}.vr .bk{touch-action:manipulation}.vr .add[disabled],.vr .btn[disabled]{opacity:.55;cursor:default}.vr .note{color:#92400e;font-size:12.5px;font-weight:600}.vr .soon-pill{letter-spacing:.04em;color:#fff;background:#1d1d1f;border-radius:999px;align-self:flex-start;padding:3px 8px;font-size:11px;font-weight:800;display:inline-flex}.vr .prev-ed{color:#92400e;text-align:center;background:#fff7ed;padding:10px 16px;font-size:14.5px}.vr .prev-ed a{font-weight:700}.vr .toast{z-index:70;color:#fff;animation:rise .3s var(--ease) both;background:#1d1d1f;border-radius:999px;align-items:center;gap:12px;padding:12px 18px;font-size:14.5px;font-weight:600;display:flex;position:fixed;bottom:24px;left:50%;transform:translate(-50%);box-shadow:0 12px 30px #00000040}.vr .toast button{color:#ff8a98;font:700 14.5px var(--v-font);cursor:pointer;background:0 0;border:0;min-height:32px}.vr .video iframe{border:0;width:100%;height:100%;position:absolute;inset:0}.vr .hw-grid.solo{grid-template-columns:minmax(0,1fr);max-width:760px;margin:0 auto}.vr .lines .line span{min-width:0}.vr .levels .lcard img{-o-object-fit:contain;object-fit:contain}.vr .err-box{background:var(--surface);text-align:center;border-radius:22px;flex-direction:column;align-items:center;gap:12px;max-width:640px;margin:0 auto;padding:28px;display:flex}@media (max-width:899px){.vr .mbar{bottom:0}}@media (max-width:420px){.vr .display{font-size:40px}.vr .fan{height:220px}.vr .bk{width:104px;margin-left:-52px;bottom:-40px}.vr .hctas .btn{flex:1}.vr .hstrip-in{gap:10px}}.vr .vs-card.after{color:var(--ink);background:linear-gradient(160deg,#fff1ea,#ffe7ee)}.vr .vs-card.after h3{color:var(--coral-ink)}.vr .vs-card.after li{color:var(--ink)}.vr .vs-card.after li svg{color:#1f9d55}.vr .ed-card{color:var(--ink);background:linear-gradient(135deg,#ffe9dd 0%,#ffe1e8 55%,#f3e6fa 100%)}.vr .ed-card:before{background:radial-gradient(50% 70% at 82%,#ffffffb3,#0000 70%)}.vr .ed-copy .tag{background:var(--coral-ink);color:#fff}.vr .ed-copy h2{color:var(--ink)}.vr .ed-sub{color:var(--text);font-size:17px;line-height:1.5}.vr .ed-list i{color:var(--coral-ink);background:#fff}.vr .ed-list b{color:var(--ink)}.vr .ed-list span{color:var(--text)}.vr .ed-art img{filter:drop-shadow(0 30px 40px #78281e40)}.vr .ed-copy .btn.light{background:var(--coral-ink);color:#fff}.vr .big-stat{background:linear-gradient(150deg,#cf3a4f,#e0577a 60%,#b9478f)}.vr .mid-cta{background:linear-gradient(110deg,#cf3a4f,#e0577a)}.vr .rung.here{background:var(--coral-ink)}.vr .rung.here .stepn{color:#ffe1e6}@media (max-width:1100px){.vr .fcard.star{order:-1}}.vr .hero{padding-top:calc(var(--nav-h) + 40px)}.vr .fan{z-index:1}.vr .hstrip{z-index:3}@media (max-width:767px){.vr .hero{padding-top:calc(var(--nav-h) + 20px)}.vr .fan{height:200px;margin-top:8px}.vr .bk{bottom:-34px}.vr .hstrip-in{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (min-width:768px) and (max-width:1023px){.vr .fan{height:320px}.vr .bk{width:160px;margin-left:-80px}}.vr .pcount{color:var(--muted);font-size:12.5px;display:none}@media (max-width:767px){.vr .combo{gap:12px;padding:14px}.vr .combo .papers{display:none}.vr .pcount{display:block}.vr .combo img{width:72px;height:94px}.vr .cp b{font-size:21px}.vr .combo .add{width:100%;min-width:0}.vr .flag{top:8px;left:8px}}.vr .display{max-width:1120px;font-size:clamp(40px,6.2vw,84px)}.vr .fan{height:300px}.vr .bk{bottom:-40px}@media (min-width:768px) and (max-width:1023px){.vr .fan{height:270px}}@media (max-width:767px){.vr .fan{height:200px}.vr .bk{bottom:-34px}}.vr .sum-col{align-self:stretch}.vr .flag{z-index:2}.vr .fan-hint{z-index:4;background:#ffffffeb;border-radius:999px;margin:-22px auto 10px;padding:6px 14px;display:table;box-shadow:0 6px 18px #78281e1f}.vr .display{text-wrap:balance;max-width:1200px;font-size:clamp(36px,5.6vw,74px)}.vr .display em{display:block}.vr .cpn{background:#fff;border-radius:30px;padding:28px;scroll-margin-top:96px;box-shadow:0 1px 2px #0000000a,0 24px 60px #0000000f}.vr .cpn-list{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px;margin:0;padding:0;list-style:none;display:grid}.vr .cpn-card{background:var(--surface);transition:box-shadow .2s var(--ease),background-color .2s;border:1.5px dashed #e8b6be;border-radius:20px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px 14px;padding:16px 18px 16px 22px;display:flex;position:relative}.vr .cpn-card:before,.vr .cpn-card:after{content:"";background:#fff;border-radius:50%;width:16px;height:16px;position:absolute;left:-9px}.vr .cpn-card:before{top:calc(50% - 8px)}.vr .cpn-card.on{background:var(--green-bg);border-color:#86d3a3}.vr .cpn-main{flex:150px;min-width:0}.vr .cpn-offer{letter-spacing:-.02em;color:var(--ink);font-size:19px;font-weight:800;line-height:1.2}.vr .cpn-desc{color:var(--text);margin-top:3px;font-size:14px}.vr .cpn-meta{color:var(--muted);flex-wrap:wrap;gap:2px 10px;margin-top:6px;font-size:12.5px;display:flex}.vr .cpn-meta span+span:before{content:"·";margin-right:10px}.vr .cpn-need{color:var(--deal);margin-top:6px;font-size:13px;font-weight:600}.vr .cpn-act{flex-direction:column;align-items:stretch;gap:8px;min-width:132px;display:flex}.vr .cpn-code{border:1.5px solid var(--line);min-height:40px;font:600 14px/1 var(--v-font);color:var(--ink);cursor:pointer;background:#fff;border-radius:12px;justify-content:space-between;align-items:center;gap:10px;padding:0 12px;display:flex}.vr .cpn-code b{letter-spacing:.06em;font-weight:800}.vr .cpn-code span{color:var(--coral-ink);font-size:12px;font-weight:700}.vr .cpn-code:hover{border-color:var(--coral)}.vr .cpn-act .btn{min-height:40px;padding:0 14px;font-size:14px}.vr .cpn-act .btn:disabled{opacity:.45;cursor:not-allowed}.vr .cpn-ok,.vr .cpn-err{flex-basis:100%;font-size:13.5px;font-weight:600;line-height:1.4}.vr .cpn-ok{color:var(--green)}.vr .cpn-err{color:var(--deal)}.vr .cpn-ok button{font:inherit;color:var(--coral-ink);cursor:pointer;background:0 0;border:0;padding:0;text-decoration:underline}@media (max-width:560px){.vr .cpn{border-radius:24px;padding:18px}.vr .cpn-list{grid-template-columns:1fr}.vr .cpn-act{flex-direction:row;width:100%}.vr .cpn-act>*{flex:1}}.vr .art-link,.vr .combo-link{color:inherit;display:block}.vr .art-link:focus-visible,.vr .combo-link:focus-visible,.vr .subj h4 a:focus-visible{outline:3px solid var(--coral);outline-offset:3px;border-radius:12px}.vr .subj h4 a:hover,.vr .combo h4 a:hover{color:var(--coral-ink)!important}.vr .more{color:var(--coral-ink);font-size:14px;font-weight:700}.vr .more:hover{color:var(--coral-press);text-decoration:underline}.vr.pd{background:#fff;min-height:60vh;padding-top:84px}.vr .pd-top{grid-template-columns:minmax(0,420px) minmax(0,1fr);align-items:start;gap:48px;padding:8px 0 56px;display:grid}.vr .pd-art{background:linear-gradient(160deg,#fdf1f3,#eef6fb);border-radius:30px;justify-content:center;align-items:flex-end;padding:40px 24px 0;display:flex;position:sticky;top:96px;overflow:hidden}.vr .pd-art img{filter:drop-shadow(0 22px 28px #0003);width:auto;max-width:100%;height:min(420px,56vw);display:block;transform:translateY(18px)}.vr .pd-info h1{letter-spacing:-.034em;color:var(--ink);margin:6px 0 10px;font-size:clamp(30px,4vw,46px);font-weight:800;line-height:1.06}.vr .pd-price{flex-wrap:wrap;align-items:baseline;gap:12px;margin:14px 0 4px;display:flex}.vr .pd-price b{letter-spacing:-.03em;color:var(--ink);font-size:36px;font-weight:800}.vr .pd-price s{color:var(--muted);font-size:19px}.vr .pd-price .off{color:var(--deal);font-size:15px;font-weight:700}.vr .pd-save{color:var(--green);background:var(--green-bg);border-radius:999px;margin-bottom:6px;padding:4px 12px;font-size:14px;font-weight:700;display:inline-block}.vr .pd-fmt{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:18px 0 12px;display:grid}.vr .pd-fmt button{text-align:left;background:var(--surface);cursor:pointer;font:600 14px/1.25 var(--v-font);color:var(--ink);border:0;border-radius:18px;flex-direction:column;align-items:flex-start;gap:2px;padding:12px 14px;transition:box-shadow .16s,background-color .16s;display:flex;box-shadow:inset 0 0 0 1.5px #0000}.vr .pd-fmt button b{font-size:15px;font-weight:800}.vr .pd-fmt button span{color:var(--muted);font-size:13px;font-weight:600}.vr .pd-fmt button.on{box-shadow:inset 0 0 0 2.5px var(--ink);background:#fff}.vr .pd-fmt button:disabled{opacity:.45;cursor:not-allowed}.vr .pd-val{flex-wrap:wrap;gap:10px;margin:0 0 12px;display:flex}.vr .pd-val button{background:var(--surface);font:700 14px/1 var(--v-font);color:var(--ink);cursor:pointer;border:0;border-radius:999px;padding:9px 16px}.vr .pd-val button.on{background:var(--ink);color:#fff}.vr .pd-buy{flex-wrap:wrap;gap:12px;margin:18px 0 8px;display:flex}.vr .pd-buy .btn{flex:200px}.vr .pd-buy .btn:disabled{opacity:.5;cursor:not-allowed}.vr .pd-note{color:var(--muted);margin-top:6px;font-size:14px}.vr .pd-note.warn{color:var(--deal);font-weight:600}.vr .pd-list{gap:8px;margin:14px 0 0;padding:0;list-style:none;display:grid}.vr .pd-list li{color:var(--text);align-items:flex-start;gap:10px;font-size:16px;display:flex}.vr .pd-list svg{color:var(--green);flex:none;margin-top:4px}.vr .pd-sec{padding:0 0 56px}.vr .pd-sec h2{letter-spacing:-.03em;color:var(--ink);margin-bottom:18px;font-size:clamp(24px,3vw,34px);font-weight:800}.vr .pd-inside{grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:14px;display:grid}.vr .pd-inside a{background:var(--surface);color:var(--ink);border-radius:20px;align-items:center;gap:12px;padding:12px 14px;display:flex}.vr .pd-inside img{flex:none;width:48px;height:auto}.vr .pd-inside b{font-size:15px;font-weight:800;line-height:1.25}.vr .pd-inside small{color:var(--muted);font-size:12.5px;font-weight:600;display:block}.vr .pd-bar{display:none}.vr .pd-missing{text-align:center;padding:96px 0}@media (max-width:900px){.vr .pd-top{grid-template-columns:1fr;gap:24px}.vr .pd-art{position:static}.vr .pd-art img{height:min(300px,70vw)}.vr .pd-fmt{grid-template-columns:1fr}.vr .pd-fmt button{flex-direction:row;justify-content:space-between;align-items:center}.vr .pd-bar{z-index:30;padding:10px 16px calc(10px + env(safe-area-inset-bottom,0px));-webkit-backdrop-filter:saturate(180%)blur(14px);backdrop-filter:saturate(180%)blur(14px);border-top:1px solid var(--line);background:#fffffff0;justify-content:space-between;align-items:center;gap:12px;display:flex;position:fixed;bottom:0;left:0;right:0}.vr .pd-bar b{color:var(--ink);font-size:20px;font-weight:800}.vr.pd{padding-bottom:76px}.vr.pd .toast{bottom:84px}}