:root{--accent:#00a5dd;--accent-d:#0387b8;--pink:#ff8fc0;--pink-d:#ff5fa2;--pink-hov:#e64890;--ink:#333;--mut:#505050;--line:#e6e6ef;--bg:#fff;--tint:linear-gradient(90deg,#fff0f7,#f5eefc,#e9f7fd);--tint2:linear-gradient(90deg,#fff0f7,#f5eefc,#e9f7fd);--grad:linear-gradient(90deg,#ff5fa2 0%,#b06ce8 50%,#00b3f0 100%)}.gradtext,.h2n span{background-image:var(--grad);background-clip:text;-webkit-background-clip:text;color:transparent;-webkit-text-fill-color:transparent}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Noto Sans SC,PingFang SC,Microsoft YaHei,Segoe UI,system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}a{color:var(--accent);text-decoration:none}.wrap{max-width:720px;margin:0 auto;padding:20px 16px 64px}header.site{display:flex;align-items:center;justify-content:space-between;padding:14px 0;margin-bottom:10px}header.site .brand{font-family:Gill Sans Ultra Bold,Gill Sans Nova Ultra Bold,Gill Sans Nova,Gill Sans MT Ultra Bold,Franklin Gothic Heavy,Arial Black,sans-serif;font-weight:800;letter-spacing:.01em;white-space:nowrap;line-height:1.05;font-size:1.725rem;background-image:var(--grad);background-clip:text;-webkit-background-clip:text;color:transparent;-webkit-text-fill-color:transparent}@media(max-width:640px){header.site .brand{font-size:1.375rem}}header.site nav{display:flex;align-items:center;gap:14px}header.site nav a{color:var(--mut);font-size:.975rem;font-weight:700}header.site nav a:last-child{background:var(--pink-d);color:#fff;border-radius:999px;padding:8px 16px;font-weight:800}header.site nav a:last-child:hover{background:var(--pink-hov)}.menu-btn{display:none;background:none;border:0;cursor:pointer;padding:10px;flex-direction:column;gap:5px;flex:none}.menu-btn .mb-bar{display:block;width:24px;height:3px;border-radius:3px;background:var(--ink);transition:transform .22s,opacity .22s}header.site.open .menu-btn .mb-bar:nth-child(1){transform:translateY(8px) rotate(45deg)}header.site.open .menu-btn 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solid transparent;border-image:var(--grad);border-image-slice:1}.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px 22px;box-shadow:0 8px 26px #1428460f}.han{font-size:64px;line-height:1.1;text-align:center;color:var(--ink)}.py{text-align:center;color:var(--accent);font-weight:700;font-size:1.25rem;margin-top:6px}.en{text-align:center;color:var(--mut);margin-top:2px}.listen{display:block;margin:16px auto 0;background:var(--accent);color:#fff;border:none;cursor:pointer;font:inherit;font-weight:700;padding:10px 20px;border-radius:999px}.listen:hover{background:var(--accent-d)}.listen svg{width:1em;height:1em;fill:currentColor;vertical-align:-.12em;margin-right:6px}.meaning{margin-top:20px;color:#334155}.overview{margin-top:18px;color:#334155;font-size:1.02rem}.sec{margin-top:22px}.sec>h2{font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;color:var(--accent-d);margin-bottom:8px;font-weight:800;border-left:4px solid var(--pink-d);padding-left:8px}.sec p{color:#334155}.reg{background:#f0f9ff;border:1px solid #dbeafe;border-radius:10px;padding:12px 14px;font-size:.92rem;color:#1e3a5f}.vars{list-style:none}.var{display:flex;align-items:baseline;gap:10px;padding:8px 0;border-top:1px solid var(--line)}.var .vzh{font-size:1.15rem;min-width:78px}.var .vpy{color:var(--accent);font-size:.85rem;min-width:96px}.var .ven{color:var(--mut);font-size:.9rem}.tip{margin-top:22px;background:#fffbeb;border:1px solid #fde68a;border-left:4px solid #f59e0b;border-radius:10px;padding:12px 14px;font-size:.92rem;color:#713f12}.tip b{color:#92400e}.exs{margin-top:20px}.exs h2,.rel h2{font-size:.95rem;color:var(--accent-d);margin-bottom:8px}.ex{padding:10px 0;border-top:1px solid var(--line);display:flex;gap:10px;align-items:flex-start}.explay{flex:0 0 30px;height:30px;border-radius:50%;border:none;background:#e0f2fe;color:var(--accent);cursor:pointer;display:flex;align-items:center;justify-content:center;margin-top:2px}.explay:hover{background:#bae6fd}.explay svg{width:14px;height:14px;fill:currentColor}.extext{flex:1}.ex .zh{font-size:1.15rem}.ex .expy{color:var(--accent);font-size:.9rem}.ex .een{color:var(--mut);font-size:.9rem}.rel{margin-top:22px}.rel a{display:inline-block;background:#e0f2fe;border-radius:999px;padding:5px 14px;margin:0 6px 6px 0;font-size:.85rem}.byline{margin-top:18px;color:#94a3b8;font-size:.78rem;text-align:center}.li-row{display:flex;align-items:center;gap:10px;padding:9px 0;border-bottom:1px solid var(--line)}.li-row:last-child{border-bottom:none}.li-num{flex:0 0 26px;color:#cbd5e1;font-weight:700;font-size:.8rem;text-align:right}.li-zh{font-size:1.3rem;color:var(--ink);min-width:96px}.li-py{color:var(--accent);font-size:.88rem;min-width:110px}.li-en{color:var(--mut);font-size:.88rem;margin-left:auto;text-align:right}@media(max-width:520px){.li-py{display:none}.li-en{font-size:.8rem}}.cta{margin-top:24px;background:var(--tint);border:1px solid #eee0f2;border-radius:14px;padding:18px;text-align:center;color:var(--ink);font-weight:700}.cta a{display:inline-block;margin-top:10px;background:var(--pink-d);color:#fff;font-weight:800;padding:11px 24px;border-radius:999px;box-shadow:0 5px 14px #ff5fa24d;transition:background .15s,transform .15s}.cta a:hover{background:var(--pink-hov);transform:translateY(-2px)}.lead{text-align:center;margin:8px 0 20px;color:var(--mut)}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}.tile{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;text-align:center;transition:transform .12s}.tile:hover{transform:translateY(-2px)}.tile .han{font-size:40px}.tile .py{font-size:.95rem}.tile .en{font-size:.85rem}