.lv2{--red:#dc2626;--red-deep:#991b1b;--red-wash:#fef2f2;--ink:#1c1917;--ink-2:#44403c;--ink-3:#78716c;--line:#e7e5e4;--line-soft:#f0efee;--paper:#fff;--paper-2:#faf9f8;--paper-3:#f5f4f2;--r:3px;--r-sm:3px;--r-pill:999px;--shell:1220px;color:var(--ink);background:var(--paper);font-family:var(--font-noto-sans), "Noto Sans", system-ui, -apple-system, sans-serif;-webkit-font-smoothing:antialiased;overflow-x:clip}.lv2 *,.lv2 :before,.lv2 :after{box-sizing:border-box}.lv2__shell{width:100%;max-width:var(--shell);margin:0 inline;margin-inline:auto;padding-inline:24px}.lv2-nav{z-index:40;-webkit-backdrop-filter:saturate(180%)blur(14px);border-bottom:1px solid var(--line-soft);background:#ffffffdb;align-items:center;height:88px;display:flex;position:sticky;top:0}.lv2-nav__inner{justify-content:space-between;align-items:center;gap:24px;width:100%;display:flex}.lv2-nav__logo{width:auto;height:64px;display:block}.lv2-nav__links{align-items:center;gap:26px;margin-left:auto;display:flex}.lv2-nav__link{color:var(--ink-2);white-space:nowrap;font-size:14.5px;font-weight:500;text-decoration:none;transition:color .18s}.lv2-nav__link:hover{color:var(--ink)}.lv2-nav__lang{border:1px solid var(--line);border-radius:var(--r-pill);background:var(--paper-2);padding:3px;display:inline-flex}.lv2-nav__lang button{font:inherit;letter-spacing:.02em;color:var(--ink-3);border-radius:var(--r-pill);cursor:pointer;background:0 0;border:0;padding:5px 11px;font-size:12.5px;font-weight:600;transition:background .18s,color .18s}.lv2-nav__lang button[data-on=true]{background:var(--ink);color:#fff}.lv2-hero{padding:72px 0 18px}.lv2-hero__grid{grid-template-columns:6fr 5fr;align-items:center;gap:64px;display:grid}.lv2-hero__eyebrow{letter-spacing:.12em;text-transform:uppercase;color:var(--red-deep);background:var(--red-wash);border-radius:var(--r-pill);border:1px solid #fecaca;align-items:center;gap:9px;margin:0 0 22px;padding:6px 13px;font-size:12px;font-weight:700;display:inline-flex}.lv2-hero h1{letter-spacing:-.028em;text-wrap:balance;margin:0 0 20px;font-size:clamp(2.4rem,4.4vw,3.55rem);font-weight:800;line-height:1.08}.lv2-hero h1 em{color:var(--red);padding-bottom:2px;font-style:italic;font-weight:800;line-height:1.14}.lv2-hero__sub{color:var(--ink-2);max-width:34rem;margin:0 0 30px;font-size:1.075rem;line-height:1.6}.lv2-hero__cta{flex-wrap:wrap;gap:12px;display:flex}@media (min-width:861px){.lv2-hero__grid>.lv2-demo{align-self:start;margin-top:32px}}.lv2-btn{white-space:nowrap;font:inherit;border-radius:var(--r-pill);cursor:pointer;border:1px solid #0000;justify-content:center;align-items:center;gap:9px;padding:13px 26px;font-size:15.5px;font-weight:650;text-decoration:none;transition:transform .16s cubic-bezier(.16,1,.3,1),background .18s,border-color .18s,box-shadow .18s;display:inline-flex}.lv2-btn--primary{background:var(--red);color:#fff;box-shadow:0 1px 2px #991b1b2e,0 8px 24px #dc262638}.lv2-btn--primary:hover{background:#c81e1e}.lv2-btn--ghost{background:var(--paper);color:var(--ink);border-color:var(--line)}.lv2-btn--ghost:hover{background:var(--paper-2);border-color:#d6d3d1}.lv2-btn:active{transform:scale(.98)}.lv2-btn:focus-visible{outline:2px solid var(--red);outline-offset:3px}.lv2-demo{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:0 1px 2px #1c19170a,0 18px 50px -12px #1c191721}.lv2-demo__bar{background:var(--paper-2);border-bottom:1px solid var(--line-soft);color:var(--ink-3);justify-content:space-between;align-items:center;padding:11px 16px;font-size:12px;font-weight:600;display:flex}.lv2-demo__body{padding:26px 22px 22px}.lv2-demo__zh{letter-spacing:.01em;border-left:3px solid #0000;margin:0 0 10px;padding-left:12px;font-size:1.38rem;line-height:2.1}.lv2-demo__zh:last-child{margin-bottom:0}.lv2-demo__zh--a{border-left-color:var(--red)}.lv2-demo__zh--b{border-left-color:#378add}.lv2-word{vertical-align:bottom;font:inherit;cursor:pointer;background:0 0;border:0;border-radius:3px;flex-direction:column;align-items:center;padding:0 1px;transition:background .16s;display:inline-flex}.lv2-word:hover{background:var(--red-wash)}.lv2-word[data-on=true]{background:#fee2e2}.lv2-word:focus-visible{outline:2px solid var(--red);outline-offset:1px}.lv2-word__py{height:15px;color:var(--ink-3);letter-spacing:.01em;font-size:11.5px;font-weight:500;line-height:15px;transition:opacity .28s;display:block}.lv2-word__zh{line-height:1.35;display:block}.lv2-demo__gloss{border-bottom:1px dashed var(--line);min-height:44px;margin-bottom:16px;padding-bottom:14px}.lv2-gloss__row{flex-wrap:wrap;align-items:baseline;gap:0 9px;margin:0;display:flex}.lv2-gloss__zh{font-size:1.15rem;font-weight:700}.lv2-gloss__py{color:var(--ink-3);font-size:13px;font-weight:500}.lv2-gloss__tr{color:var(--ink-2);font-size:15px}.lv2-gloss__hint{color:var(--red-deep);font-size:15px;font-weight:600}.lv2-demo__foot{background:var(--paper-2);border-top:1px solid var(--line-soft);align-items:center;gap:8px;padding:11px 22px;display:flex}.lv2-ctl{font:inherit;color:var(--ink-2);background:var(--paper);border:1px solid var(--line);border-radius:var(--r);cursor:pointer;align-items:center;gap:7px;padding:7px 13px;font-size:12.5px;font-weight:650;transition:background .16s,border-color .16s,color .16s;display:inline-flex}.lv2-ctl:hover{border-color:#d6d3d1}.lv2-ctl:focus-visible{outline:2px solid var(--red);outline-offset:2px}.lv2-ctl[data-on=true]{background:var(--red);border-color:var(--red);color:#fff}.lv2-ctl--play{color:var(--red-deep)}.lv2-ctl--play:hover{background:var(--red-wash);border-color:#fecaca}.lv2-demo__zh[data-playing=true]{background:var(--red-wash)}.lv2-sec{padding:92px 0}.lv2-sec--tint{background:var(--paper-2);border-block:1px solid var(--line-soft)}.lv2-sec__h{letter-spacing:-.024em;text-wrap:balance;max-width:20ch;margin:0 0 14px;font-size:clamp(1.75rem,2.9vw,2.4rem);font-weight:800;line-height:1.15}.lv2-sec__p{color:var(--ink-2);max-width:54ch;margin:0;font-size:1.03rem;line-height:1.62}.lv2-course__grid{grid-template-columns:6fr 5fr;align-items:center;gap:56px;display:grid}.lv2-course__grid>:first-child{order:2}.lv2-books{order:1;gap:10px;display:grid}.lv2-book{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);color:inherit;grid-template-columns:auto 1fr auto;align-items:center;gap:16px;padding:17px 20px;text-decoration:none;transition:transform .18s cubic-bezier(.16,1,.3,1),border-color .18s,box-shadow .18s;display:grid}.lv2-book:hover{border-color:#d6d3d1;transform:translateY(-2px);box-shadow:0 10px 30px -12px #1c191729}.lv2-book__spine{color:#fff;background:linear-gradient(160deg, var(--red), var(--red-deep));border-radius:3px;place-items:center;width:38px;height:50px;font-size:15px;font-weight:800;display:grid;box-shadow:inset -3px 0 #00000024}.lv2-book__t{font-size:15.5px;font-weight:700;display:block}.lv2-book__s{color:var(--ink-3);margin-top:2px;font-size:13px;display:block}.lv2-book__n{color:var(--ink-3);font-variant-numeric:tabular-nums;white-space:nowrap;font-size:13px;font-weight:700}.lv2-bento{grid-template-columns:repeat(6,1fr);gap:14px;margin-top:44px;display:grid}.lv2-tile{border:1px solid var(--line);border-radius:var(--r);background:var(--paper);color:inherit;flex-direction:column;padding:24px;text-decoration:none;transition:transform .2s cubic-bezier(.16,1,.3,1),border-color .2s,box-shadow .2s;display:flex;position:relative;overflow:hidden}.lv2-tile:hover{border-color:#d6d3d1;transform:translateY(-3px);box-shadow:0 14px 36px -14px #1c191733}.lv2-tile--wide{grid-column:span 4}.lv2-tile--half{grid-column:span 3}.lv2-tile--third{grid-column:span 2}.lv2-tile__t{letter-spacing:-.012em;font-size:1.15rem;font-weight:750;display:block}.lv2-tile__d{color:var(--ink-2);max-width:40ch;margin-top:7px;font-size:14.5px;line-height:1.55;display:block}.lv2-tile--photo{justify-content:flex-end;min-height:236px;padding:0}.lv2-tile--photo img{object-fit:cover;width:100%;height:100%;position:absolute;inset:0}.lv2-tile--photo .lv2-tile__cap{color:#fff;background:linear-gradient(#0000,#1c191785 45%,#1c1917e0);padding:22px;display:block;position:relative}.lv2-tile--photo .lv2-tile__t{color:#fff}.lv2-tile--photo .lv2-tile__d{color:#ffffffe0}.lv2-tile--lyric{background:linear-gradient(150deg, #fff, var(--red-wash));border-color:#fde0e0;justify-content:flex-end;min-height:236px;position:relative;overflow:hidden}.lv2-tile__lyric{flex-wrap:wrap;gap:0 10px;margin-bottom:22px;display:flex}.lv2-lyr{flex-direction:column;align-items:center;display:flex}.lv2-lyr__py{color:var(--red-deep);font-size:12px;line-height:1.5}.lv2-lyr__ch{color:var(--ink);font-size:34px;font-weight:500;line-height:1.15}.lv2-tile--wash{background:linear-gradient(158deg, var(--red-wash), #fff 72%);border-color:#fecaca}.lv2-rail{scroll-snap-type:x mandatory;scrollbar-width:thin;grid-auto-columns:268px;grid-auto-flow:column;gap:14px;margin-inline:-24px;padding:4px 24px 22px;display:grid;overflow-x:auto}.lv2-rail::-webkit-scrollbar{height:7px}.lv2-rail::-webkit-scrollbar-thumb{background:var(--line);border-radius:99px}.lv2-card{scroll-snap-align:start;border:1px solid var(--line);border-radius:var(--r);background:var(--paper);color:inherit;text-decoration:none;transition:transform .18s cubic-bezier(.16,1,.3,1),box-shadow .18s;overflow:hidden}.lv2-card:hover{transform:translateY(-3px);box-shadow:0 14px 32px -14px #1c191738}.lv2-card img{aspect-ratio:16/9;object-fit:cover;width:100%;display:block}.lv2-card__b{padding:14px 16px 16px}.lv2-card__zh{font-size:1.02rem;font-weight:700}.lv2-card__tr{color:var(--ink-3);margin-top:3px;font-size:13.5px}.lv2-card__lvl{letter-spacing:.05em;color:var(--red-deep);background:var(--red-wash);border-radius:var(--r-sm);margin-top:9px;padding:3px 8px;font-size:11px;font-weight:700;display:inline-block}.lv2-cta{background:var(--ink);color:#fff;border-radius:var(--r);grid-template-columns:1fr auto;align-items:center;gap:40px;padding:62px 56px;display:grid}.lv2-cta h2{letter-spacing:-.024em;max-width:18ch;margin:0 0 12px;font-size:clamp(1.7rem,2.8vw,2.3rem);font-weight:800;line-height:1.15}.lv2-cta p{color:#ffffffbd;max-width:46ch;margin:0;font-size:1.02rem;line-height:1.6}.lv2-cta .lv2-btn--primary{box-shadow:none}.lv2-foot{border-top:1px solid var(--line-soft);margin-top:92px;padding:46px 0 60px}.lv2-foot__row{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:26px;display:flex}.lv2-foot__links{flex-wrap:wrap;gap:22px;display:flex}.lv2-foot a{color:var(--ink-2);font-size:14px;text-decoration:none}.lv2-foot a:hover{color:var(--ink)}.lv2-foot__note{color:var(--ink-3);font-size:13.5px}.lv2-reveal{opacity:0;transition:opacity .62s cubic-bezier(.16,1,.3,1),transform .62s cubic-bezier(.16,1,.3,1);transform:translateY(20px)}.lv2-reveal[data-in=true]{opacity:1;transform:none}@media (max-width:1120px) and (min-width:861px){.lv2-hero__grid{grid-template-columns:1fr 1fr;gap:36px}.lv2-hero h1{font-size:clamp(2.1rem,3.6vw,2.8rem)}.lv2-demo__zh{font-size:1.28rem}}@media (max-width:860px){.lv2-hero__grid{grid-template-columns:1fr;gap:40px}.lv2-hero h1{max-width:34rem}}@media (max-width:1000px){.lv2-course__grid{grid-template-columns:1fr;gap:40px}.lv2-course__grid>:first-child,.lv2-books{order:0}.lv2-tile--wide,.lv2-tile--half,.lv2-tile--third{grid-column:span 6}.lv2-cta{grid-template-columns:1fr;padding:44px 32px}}@media (max-width:600px){.lv2__shell{padding-inline:18px}.lv2-hero{padding-top:40px}.lv2-sec{padding:62px 0}.lv2-nav__logo{height:48px}.lv2-nav__links{gap:14px}.lv2-nav__link{display:none}.lv2-btn{min-height:44px;padding:13px 20px}.lv2-demo__zh{font-size:1.3rem;line-height:2.05}.lv2-hero h1{-webkit-hyphens:none;hyphens:none;font-size:2.05rem}.lv2-hero__sub{font-size:1rem}.lv2-rail{grid-auto-columns:232px;margin-inline:-18px;padding-inline:18px}.lv2-cta{padding:36px 22px}.lv2-ctl{padding:9px 14px}}@media (prefers-reduced-motion:reduce){.lv2 *,.lv2 :before,.lv2 :after{transition-duration:.001ms!important;animation-duration:.001ms!important}.lv2-reveal{opacity:1;transform:none}}