:root{--bg:#f7f9ff;--surface:#fff;--surface-2:#f3f6ff;--surface-3:#eef7ff;--ink:#151629;--muted:#667085;--soft:#98a2b3;--line:#dfe6f6;--line-strong:#c8d4ec;--violet:#7b61ff;--violet-2:#a99cff;--blue:#5aa7ff;--cyan:#6da9ff;--green:#0f9b6d;--amber:#c77904;--red:#d13f5e;--coral:#8bbdff;--sun:#d8ccff;--result-green:#20b36b;--result-yellow:#f2bb2f;--result-red:#ef476f;--shadow:0 28px 90px #4254a029;--shadow-soft:0 16px 42px #46569617;--focus-ring:0 0 0 3px #7b61ff26;--editor-pane-height:clamp(500px, 31.25vw, 600px);--workspace-fold-height:auto}*{box-sizing:border-box}html{scroll-behavior:smooth}body{color:var(--ink);letter-spacing:0;background:radial-gradient(circle at 50% 170px,#7b61ff2e,#0000 360px),radial-gradient(circle at 82% 330px,#5aa7ff29,#0000 330px),radial-gradient(circle at 14% 520px,#7b61ff14,#0000 300px),#f8faff;margin:0;font-family:Outfit,Microsoft YaHei,PingFang SC,Hiragino Sans,Noto Sans,sans-serif}body:before{filter:blur(2px);content:"";pointer-events:none;z-index:-1;background:radial-gradient(circle at 50% 35%,#7b61ff29,#0000 36%),radial-gradient(circle at 52% 62%,#5aa7ff1f,#0000 42%);height:100vh;position:fixed;top:0;left:0;right:0;-webkit-mask-image:linear-gradient(#000 0% 72%,#0000 100%);mask-image:linear-gradient(#000 0% 72%,#0000 100%)}button,textarea,select{font:inherit}button{cursor:pointer;transition:background-color .18s,border-color .18s,box-shadow .18s,color .18s,transform .18s}button:disabled{cursor:not-allowed;opacity:.62}button:not(:disabled):hover{transform:translateY(-1px)}button:focus-visible,a:focus-visible,textarea:focus-visible,select:focus-visible{box-shadow:var(--focus-ring);outline:none}a{color:inherit;text-decoration:none}main{min-height:100vh;overflow-x:clip}h1,h2,h3,p{margin:0}.site-header{-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);z-index:20;background:#ffffffdb;border:1px solid #ffffffeb;border-radius:8px;justify-content:space-between;align-items:center;gap:24px;max-width:1180px;min-height:70px;margin:14px auto 0;padding:10px 15px;display:flex;position:sticky;top:12px;box-shadow:0 18px 58px #4254a01f}.brand,.brand-mark,.site-header nav,.header-tools,.header-actions,.language-button,.language-option,.eyebrow,.hero-badges,.pane-title,.pane-title div,.pane-actions,.section-heading,.style-select,.score-badge,.mode-tabs,.comparison{align-items:center;display:flex}.brand{white-space:nowrap;gap:10px;font-size:1.04rem;font-weight:900}.brand-mark{background:linear-gradient(135deg, #fff3, transparent), linear-gradient(135deg, var(--violet), var(--blue));color:#fff;border-radius:8px;justify-content:center;width:36px;height:36px;box-shadow:0 12px 26px #4d46e542}.brand-mark img{object-fit:contain;width:18px;height:18px}.site-header nav{color:var(--muted);background:#f5f8ffd1;border:1px solid #d9e2f8eb;border-radius:999px;flex:1;justify-content:center;gap:4px;max-width:440px;margin:0 auto;padding:4px}.site-header nav a{border-radius:999px;padding:10px 15px;font-size:.88rem;font-weight:850;line-height:18px}.site-header nav a.active,.site-header nav a:hover{color:#5c2be8;background:#fff;box-shadow:0 8px 22px #4328841c}.header-actions{gap:8px}.header-tools{justify-content:flex-end;gap:10px}.auth-actions{min-height:38px}.auth-status{color:var(--green);white-space:nowrap;background:#eafaf3;border:1px solid #109b6d2e;border-radius:999px;padding:7px 10px;font-size:.78rem;font-weight:900}.ghost-button,.solid-button,.quiet-button,.secondary-button,.primary-button{white-space:nowrap;border-radius:999px;justify-content:center;align-items:center;gap:8px;min-height:40px;padding:0 17px;display:inline-flex}.ghost-button,.quiet-button{color:var(--muted);background:#ffffff94;border:1px solid #0000;font-weight:850}.solid-button,.secondary-button{background:var(--surface);border:1px solid var(--line);color:var(--ink);font-weight:900;box-shadow:0 8px 18px #533a7512}.primary-button{background:linear-gradient(135deg, #ffffff38, transparent), linear-gradient(135deg, var(--violet), var(--blue));color:#fff;border:0;font-weight:950;box-shadow:0 14px 30px #4f46e547}.secondary-button{color:#5c2be8}.quiet-button:hover,.secondary-button:hover,.solid-button:hover,.language-button:hover{border-color:#7c3df547;box-shadow:0 12px 26px #533a751f}.language-switcher{flex:none;position:relative}.language-button{border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:999px;justify-content:center;gap:8px;min-height:40px;padding:0 13px}.language-button span{font-size:.88rem;font-weight:900}.language-button svg:last-child{color:var(--muted);transition:transform .18s}.language-switcher.open .language-button svg:last-child{transform:rotate(180deg)}.language-menu{-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--line);z-index:40;background:#fffffff5;border-radius:8px;gap:4px;min-width:218px;padding:8px;display:grid;position:absolute;top:calc(100% + 10px);right:0;box-shadow:0 24px 70px #3426522e}.language-option{color:var(--muted);text-align:left;background:0 0;border:0;border-radius:8px;grid-template-columns:34px minmax(0,1fr) auto;justify-content:stretch;gap:10px;min-height:44px;padding:0 10px;font-weight:850;display:grid}.language-option:hover,.language-option.selected{color:var(--ink);background:#f5efff}.language-code{color:#6d6a7d;text-transform:uppercase;font-weight:950}.language-option.selected .language-code{color:#5c2be8}.language-dot{background:var(--violet);border-radius:999px;width:8px;height:8px;box-shadow:0 0 0 5px #7c3df51f}.hero-band{max-width:1180px;margin:33px auto 10px;padding:0 20px;position:relative}.hero-band:before,.hero-band:after{content:"";pointer-events:none;z-index:-1;position:absolute;left:50%;transform:translate(-50%)}.hero-band:before{filter:blur(8px);background:radial-gradient(#7b61ff24,#0000 68%),radial-gradient(at 55% 62%,#5aa7ff1f,#0000 72%);width:calc(100% - 40px);max-width:1020px;height:260px;top:-20px}.hero-band:after{opacity:.7;background:radial-gradient(#fff9,#0000 64%);width:min(880px,100% - 40px);height:160px;top:36px}.hero-copy{text-align:center;max-width:940px;margin:0 auto}.eyebrow{display:none}.eyebrow span{font-size:.83rem;font-weight:950}.hero-title{letter-spacing:0;font-family:Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:clamp(2.35rem,3.125vw,3.75rem);font-weight:900;line-height:75px}.hero-title-line{margin-bottom:0;padding-bottom:0;display:block;overflow:visible}.hero-title-main{margin-bottom:8px}.hero-title-rotating-line{flex-wrap:wrap;justify-content:center;align-items:baseline;gap:.14em;display:flex}.hero-title-fragment{margin-bottom:0;padding-bottom:0;display:inline}.hero-title-after-fragment{display:inline-flex}.split-char-wrap{vertical-align:baseline;margin-bottom:-.18em;padding-bottom:.18em;display:inline-block;overflow:hidden}.split-char{opacity:0;animation:1.25s cubic-bezier(.22,1,.36,1) forwards split-rise;animation-delay:calc(var(--char-index) * 50ms);will-change:transform, opacity;display:inline-block;transform:translateY(40px)}.hero-title-highlight .split-char{color:var(--char-color)}.rotating-word{vertical-align:baseline;justify-content:flex-end;align-items:baseline;min-width:4.8em;padding:0 0 .22em;line-height:1;display:inline-flex;overflow:visible}.text-rotate-sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.rotating-word-inner{padding:.02em 0 .22em;line-height:1;display:inline-flex;overflow:hidden}.rotating-word-wrap{padding-bottom:.18em}.rotating-word-char{animation:.72s cubic-bezier(.22,1,.36,1) both rotate-word-in;animation-delay:calc(var(--rotate-index) * 25ms);color:var(--char-color);will-change:transform, opacity;display:inline-block;transform:translateY(105%)}@keyframes split-rise{to{opacity:1;transform:translate(0,0)}}@keyframes rotate-word-in{0%{opacity:0;transform:translateY(105%)}to{opacity:1;transform:translate(0,0)}}.hero-badges{display:none}.hero-badges span{color:#4f4568;background:#ffffffc2;border:1px solid #eadfede6;border-radius:999px;padding:8px 12px;font-size:.8rem;font-weight:900;box-shadow:0 10px 24px #533a7514}.workspace-shell{border:1px solid var(--line);box-shadow:var(--shadow);max-width:1960px;min-height:var(--workspace-fold-height);background:#ffffffeb;border-radius:26px;flex-direction:column;width:min(1880px,100% - 40px);margin:0 auto;padding:15px 15px 23.5px;display:flex;position:relative}.workspace-shell:before{content:"";display:none}.workspace-toolbar{justify-content:space-between;align-items:center;gap:14px;padding:0 0 12px;display:flex}.mode-tabs{border:1px solid var(--line);background:#f5f7ff;border-radius:999px;gap:4px;padding:5px}.mode-tabs button{color:var(--muted);background:0 0;border:0;border-radius:999px;grid-template-columns:auto auto;align-items:center;gap:2px 8px;min-height:40.88px;padding:6px 15px;display:grid}.mode-tabs button.selected{color:#5c2be8;background:#fff;font-weight:950;box-shadow:0 9px 22px #533a7521}.mode-tabs button svg{grid-row:1/span 2}.mode-tabs button span{font-weight:950;line-height:1}.mode-tabs button small{color:var(--muted);font-size:.68rem;font-weight:850;line-height:1}.style-select{border:1px solid var(--line);background:#f5f7ff;border-radius:999px;gap:10px;min-height:42px;padding:0 14px}.style-select span{color:var(--muted);letter-spacing:.04em;text-transform:uppercase;font-size:.72rem;font-weight:950}.style-select select{color:var(--ink);background:0 0;border:0;outline:none;font-weight:900}.score-badge{border:1px solid var(--line);border-radius:999px;justify-content:center;gap:8px;min-width:142px;min-height:42px;padding:0 16px}.score-badge img{object-fit:contain;width:18px;height:18px}.score-badge span{font-size:1.08rem;font-weight:950}.score-badge small{color:var(--muted);font-weight:900}.score-badge.empty{color:var(--muted);background:#f8f3ff}.score-badge.success{color:var(--green);background:#eafaf3}.score-badge.warning{color:var(--amber);background:#fff7df}.score-badge.danger{color:var(--red);background:#fff0f4}.editor-grid{flex:none;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px;display:grid}.editor-pane{border:1px solid var(--line);height:var(--editor-pane-height);min-height:var(--editor-pane-height);background:linear-gradient(#f7f9fff2,#fffffff5);border-radius:28px;flex-direction:column;padding:13px;display:flex;position:relative;box-shadow:inset 0 1px #ffffffb3}.editor-pane:before{content:"";display:none}.output-pane{background:linear-gradient(#f3fbfff0,#fffffff5)}.highlight-output{border:1px solid var(--line);color:#252231;white-space:pre-wrap;background:#ffffffd1;border-radius:20px;flex:1;width:100%;min-height:0;padding:18px;font-size:1.02rem;line-height:2.05;overflow:auto}.highlight-output.placeholder{border-color:var(--line);color:var(--muted);opacity:.58;background:#fff;align-items:flex-start;font-weight:500;line-height:1.7;display:flex}.pane-icon{object-fit:contain;width:20px;height:20px}.highlight-output.plain-output{border-color:var(--line);color:#252231;background:#ffffffc7}.processing-output{border:1px solid var(--line);color:#252231;background:radial-gradient(circle at 34% 18%,#755cff1f,#0000 34%),linear-gradient(135deg,#ffffffd6,#f5faffdb);border-radius:8px;flex:1;justify-content:center;align-items:center;width:100%;min-height:0;padding:24px;display:flex;overflow:hidden}.processing-panel{gap:18px;width:min(82%,520px);max-width:520px;display:grid}.processing-heading{color:var(--ink);letter-spacing:0;justify-content:center;align-items:center;gap:12px;font-size:clamp(1.25rem,2.1vw,1.7rem);font-weight:950;display:flex}.processing-icon{color:#fff;background:linear-gradient(135deg,#755cff,#62b0ff);border-radius:8px;justify-content:center;align-items:center;width:42px;height:42px;display:inline-flex;box-shadow:0 14px 28px #6280ff3d}.processing-bar{background:#dee8f7b8;border-radius:999px;height:13px;position:relative;overflow:hidden;box-shadow:inset 0 1px 2px #494d7014}.processing-bar span{border-radius:inherit;background:linear-gradient(90deg,#6f72f5,#755cff 48%,#62b0ff);min-width:18%;height:100%;transition:width .36s;display:block;position:relative;overflow:hidden;box-shadow:0 6px 18px #6570f53d}.processing-bar span:after{content:"";background:linear-gradient(90deg,#0000,#ffffff7a,#0000);animation:1.15s ease-in-out infinite progress-sheen;position:absolute;inset:0;transform:translate(-100%)}.processing-meta{color:var(--muted);justify-content:space-between;align-items:center;font-size:.98rem;font-weight:650;display:flex}.processing-meta strong{color:var(--ink);font-size:1.28rem;font-weight:950}.highlight-token{-webkit-box-decoration-break:clone;box-decoration-break:clone;border-radius:5px;margin-right:7px;padding:2px 5px;display:inline}.highlight-token.success{color:#176548;background:#109b6d24}.highlight-token.warning{color:#7b4a05;background:#c7780429}.highlight-token.danger{color:#9f2b45;background:#d13f5e24}.pane-title{color:var(--muted);justify-content:space-between;margin-bottom:12px;padding:0 19px}.pane-title div{gap:8px}.pane-title span{color:var(--ink);font-weight:950}.pane-title small{color:var(--muted);background:#ffffffc2;border:1px solid #eadfedc7;border-radius:999px;padding:6px 10px;font-size:.76rem;font-weight:900}textarea{color:#252231;resize:none;background:#fff;border:1px solid #0000;border-radius:20px;outline:none;flex:1;width:100%;min-height:0;padding:18px;font-size:1.02rem;line-height:1.86}.input-shortcuts{z-index:2;gap:16px;display:flex;position:absolute;top:50%;left:50%;transform:translate(-50%,-40%)}.input-shortcuts button{color:#1b133f;border:0;border-radius:12px;flex-direction:column;justify-content:center;align-items:center;gap:10px;min-width:156px;height:111px;padding:11px 24px;font-size:.88rem;font-weight:950;display:flex}.input-shortcuts button:first-child{background:#f3f3ff}.input-shortcuts button:last-child{background:#edf8fe}.input-shortcuts button svg{color:#7560ff}.input-shortcuts button img{object-fit:contain;width:24px;height:24px}textarea:focus{background:#fff;border-color:#7c3df53d}textarea::placeholder{color:#9b98aa}.pane-actions{border-top:1px dashed var(--line);justify-content:flex-end;gap:8px;margin-top:10px;padding-top:10px}.analysis-grid{grid-template-columns:.9fr 1.4fr .8fr;gap:16px;margin-top:16px;display:grid}.analysis-panel{border:1px solid var(--line);background:#fff;border-radius:8px;min-height:186px;padding:16px}.section-heading{gap:9px;margin-bottom:14px}.section-heading h2{font-size:1rem}.metric-row+.metric-row{margin-top:13px}.metric-heading{justify-content:space-between;align-items:center;margin-bottom:7px;display:flex}.metric-heading span{color:var(--muted);font-size:.88rem}.metric-heading strong{font-size:.84rem}.meter{background:#eceaf4;border-radius:999px;height:8px;overflow:hidden}.meter span{background:linear-gradient(90deg, var(--cyan), var(--violet));height:100%;display:block}.sentence-list{gap:8px;display:grid}.sentence-item{border:1px solid var(--line);border-radius:8px;grid-template-columns:minmax(0,1fr) auto;align-items:flex-start;gap:10px;padding:10px;display:grid}.sentence-item span{color:#393544;font-size:.9rem;line-height:1.55}.sentence-item strong{text-align:center;border-radius:8px;min-width:34px;padding:5px 7px;font-size:.78rem}.sentence-item.success strong{color:var(--green);background:#eaf8f2}.sentence-item.warning strong{color:var(--amber);background:#fff6e8}.sentence-item.danger strong{color:var(--red);background:#fff0f4}.empty-state{color:var(--muted);font-size:.92rem;line-height:1.6}.comparison{justify-content:space-between;gap:8px}.comparison div{background:var(--surface-2);border-radius:8px;flex:1;place-items:center;gap:8px;min-height:96px;padding:12px;display:grid}.comparison span{color:var(--muted);text-transform:uppercase;font-size:.78rem;font-weight:850}.comparison strong{font-size:1.8rem}.error-banner{color:var(--red);background:#fff0f4;border:1px solid #ffd3dd;border-radius:8px;margin-top:14px;padding:12px 14px;font-weight:850}.result-card{border:1px solid var(--line);box-shadow:none;color:var(--ink);background:#ffffffe0;border-radius:20px;margin-top:10px;padding:16px}.result-card.empty-result{border-color:var(--line);color:var(--ink);background:linear-gradient(135deg,#ffffffeb,#f2f7ffcc);align-items:center;gap:12px;min-height:97px;padding:17px 37px;display:flex}.result-empty-icon{color:var(--violet);background:#f0e8ff;border-radius:8px;flex:none;justify-content:center;align-items:center;width:32px;height:32px;display:flex}.result-card.empty-result h2{font-size:1.05rem;font-weight:950}.result-card.empty-result p{color:var(--muted);margin-top:5px;line-height:1.6}.result-message{text-align:center;justify-content:center;align-items:center;gap:16px;margin-bottom:18px;display:flex}.result-message span{border-radius:999px;justify-content:center;align-items:center;width:28px;height:28px;display:flex}.result-card.success .result-message{color:var(--green)}.result-card.warning .result-message{color:var(--amber)}.result-card.danger .result-message{color:var(--red)}.result-card.success .result-message span{background:#2ecc712e}.result-card.warning .result-message span{background:#f4c4302e}.result-card.danger .result-message span{background:#ff4d4f2e}.result-message h2{font-size:clamp(1.05rem,1.8vw,1.35rem);font-weight:950;line-height:1.2}.result-message-copy{flex-direction:column;align-items:center;display:flex}.result-body{grid-template-columns:minmax(140px,240px) minmax(220px,320px) minmax(0,1fr);align-items:center;gap:34px;display:grid}.donut-wrap{place-items:center;display:grid}.donut{border-radius:999px;place-items:center;width:118px;height:118px;display:grid;box-shadow:0 18px 42px #533a7521}.donut>div{background:#fff;border-radius:999px;place-items:center;width:86px;height:86px;display:grid}.donut strong{font-size:1.55rem;line-height:1}.donut span{color:#ff696b;font-size:.76rem;font-weight:950}.score-split{gap:18px;display:grid}.score-split div{grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:10px;display:grid}.score-split strong{color:var(--muted);font-size:1rem}.score-split b{font-size:1.18rem}.dot{border-radius:999px;width:8px;height:8px}.dot.green{background:var(--result-green)}.dot.yellow{background:var(--result-yellow)}.dot.red{background:var(--result-red)}.cross-check-panel{border-left:1px solid var(--line);min-width:0;padding-left:34px}.cross-check-panel h3{align-items:center;gap:10px;margin-bottom:18px;display:flex}.cross-check-panel h3 svg{color:var(--violet)}.cross-check-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;display:grid}.cross-check-item{color:var(--ink);background:#eafaf3d1;border:1px solid #20b36b38;border-radius:10px;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:10px;min-height:44px;padding:8px 11px;display:grid}.cross-check-item.warning{background:#fff7dfe0;border-color:#f2bb2f57}.cross-check-item.danger,.cross-check-item.failed{background:#fff0f4db;border-color:#d13f5e3d}.cross-check-logo,.cross-check-status{border-radius:999px;justify-content:center;align-items:center;font-weight:950;display:flex}.cross-check-logo{color:inherit;background:0 0;width:23px;height:23px;font-size:0}.cross-check-logo img{object-fit:contain;width:100%;height:100%}.cross-check-item strong{text-overflow:ellipsis;white-space:nowrap;font-weight:900;overflow:hidden}.cross-check-status{color:#fff;background:#36db83;width:auto;min-width:31px;height:22px;padding:0 6px;font-size:.66rem;line-height:1}.detector-logo-band{color:#1516292e;flex-wrap:nowrap;justify-content:space-between;align-items:center;gap:0;max-width:1503.82px;height:123px;margin:36px auto 0;padding:0;display:flex;overflow:hidden}.detector-logo{filter:grayscale();object-fit:contain;opacity:.7;flex:none;width:auto;max-width:none;height:auto}.detector-logo.turnitin{width:210.38px;height:109.91px}.detector-logo.gptzero{opacity:.72;width:226.11px;height:118.13px}.detector-logo.copyleaks{width:185.65px;height:48.45px}.detector-logo.chatgpt{opacity:.66;width:233.74px;height:122.81px}.detector-logo.zerogpt{opacity:.68;width:235.78px;height:68.59px}.detector-logo.sapling{opacity:.7;width:198.3px;height:50.13px}.quality-section .section-intro h2 span{background:linear-gradient(90deg,#755cff,#4f8cff);color:#0000;-webkit-background-clip:text;background-clip:text}.cross-check-status:after{content:"%"}.cross-check-item.warning .cross-check-status{background:var(--result-yellow);color:#4f3400}.cross-check-item.danger .cross-check-status,.cross-check-item.failed .cross-check-status{background:var(--red);color:#fff}.rewrite-delta{color:var(--muted);margin-top:14px;font-size:.92rem;line-height:1.6}.quality-band{max-width:1180px;margin:84px auto 0;padding:0 20px}.section-intro{text-align:center;max-width:1228px;margin:0 auto 30px}.section-intro h2,.pricing-band h2{font-size:clamp(2rem,4vw,3.35rem)}.section-intro p,.pricing-band p,.feature-grid p{color:var(--muted);margin-top:10px;font-weight:600;line-height:1.7}.feature-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;display:grid}.feature-grid article{border:1px solid var(--line);box-shadow:var(--shadow-soft);text-align:center;background:#ffffffe0;border-radius:20px;min-height:376.57px;padding:49px 35px;position:relative}.feature-grid article:before,.before-after-grid article:before,.use-case-grid article:before,.tool-matrix article:before,.article-grid article:before{content:"";display:none}.feature-card-icon{object-fit:contain;width:64px;height:64px;margin:0 auto 22px;display:block}.feature-grid h3{font-size:2rem;font-weight:950}.pricing-band{border:1px solid var(--line);box-shadow:var(--shadow-soft);color:var(--ink);background:#fff;border-radius:8px;justify-content:space-between;align-items:center;width:calc(100% - 40px);max-width:1180px;margin:70px auto 80px;padding:30px;display:flex}.pricing-band p{color:var(--muted)}.billing-section{max-width:1644px;scroll-margin-top:120px}.pricing-toolbar{justify-content:center;align-items:center;gap:14px;margin-bottom:18px;display:flex}.currency-pill,.billing-cycle-toggle{border:1px solid #c7d7ff;border-radius:999px;align-items:center;font-weight:850;display:inline-flex}.currency-pill{color:#344054;background:#ffffffeb;gap:8px;min-height:44px;padding:0 14px}.billing-cycle-toggle{background:#edf3ff;gap:4px;padding:4px}.billing-cycle-toggle button,.billing-cycle-toggle span{white-space:nowrap;border:0;border-radius:999px;justify-content:center;align-items:center;min-height:36px;padding:0 16px;display:inline-flex}.billing-cycle-toggle button{color:#667085;background:0 0;font-weight:800}.billing-cycle-toggle button.active{color:#1d2939;background:#fff;box-shadow:0 8px 20px #435a991f}.billing-discount-chip{color:#fff;letter-spacing:.01em;background:linear-gradient(135deg,#745dff,#5aa7ff);font-size:.82rem;font-weight:900}.billing-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;display:grid}.billing-card{background:linear-gradient(#fffffffa,#f3f7fff2);border:1px solid #c6d6ff;border-radius:36px;flex-direction:column;min-height:744px;padding:24px;display:flex;position:relative;box-shadow:0 18px 42px #596ea614}.billing-card.featured{transform:translateY(-4px);box-shadow:0 28px 68px #5c6bcd24}.billing-card-top{justify-content:space-between;align-items:flex-start;gap:14px;display:flex}.billing-card h3{color:#151629;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:32px;font-weight:700;line-height:1.05}.billing-card p{color:#667085;margin-top:10px;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;line-height:1.6}.billing-badge{color:#5c2be8;text-transform:uppercase;white-space:nowrap;background:#745dff1c;border:1px solid #745dff29;border-radius:999px;align-self:flex-start;padding:7px 10px;font-size:.72rem;font-weight:900;line-height:1}.billing-price-block{margin-top:22px}.billing-compare{color:#98a2b3;margin-bottom:6px;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:17px;font-weight:500;text-decoration:line-through;display:inline-block}.billing-price{align-items:baseline;gap:8px;display:flex}.billing-price strong{color:#151629;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:52px;font-weight:700;line-height:1}.billing-price span{color:#98a2b3;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:18px;font-weight:400}.billing-note{font-size:.95rem;color:#98a2b3!important;margin-top:8px!important}.billing-button{border:0;border-radius:16px;justify-content:center;align-items:center;gap:8px;width:100%;min-height:50px;margin-top:20px;padding:0 16px;display:inline-flex}.billing-button.current{color:#475467;background:#eef2ff}.billing-button.subscribe{color:#fff;background:linear-gradient(#fff3,#fff0),linear-gradient(135deg,#745dff,#5aa7ff);box-shadow:0 18px 34px #676bf433}.billing-button svg{flex:none}.billing-features{gap:12px;margin:18px 0 0;padding:0;display:grid}.billing-features li{color:#344054;align-items:flex-start;gap:10px;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:.96rem;line-height:1.55;list-style:none;display:flex}.billing-features li.excluded{color:#98a2b3}.billing-feature-status{border-radius:999px;flex:none;justify-content:center;align-items:center;width:18px;height:18px;margin-top:2px;display:inline-flex}.billing-features li.included .billing-feature-status{color:#32c468;background:#32c4681f}.billing-features li.excluded .billing-feature-status{color:#e25656;background:#e256561f}.trust-band{flex-wrap:wrap;justify-content:center;align-items:center;gap:10px;max-width:1180px;margin:44px auto 0;padding:0 20px;display:flex}.trust-band span,.section-kicker,.article-grid span,.before-after-grid span{color:#5c2be8;letter-spacing:.04em;text-transform:uppercase;font-size:.78rem;font-weight:950}.trust-band span{border:1px solid var(--line);background:#ffffffc7;border-radius:999px;padding:9px 13px;box-shadow:0 12px 30px #533a7514}.seo-section{max-width:1484px;margin:84px auto 0;padding:0 20px}.workflow-section .section-intro h2 span,.before-after-section .section-intro h2 span{background:linear-gradient(90deg,#745dff 0%,#3e9eff 100%);color:#0000;-webkit-background-clip:text;background-clip:text}.workflow-section .section-intro h2,.before-after-section .section-intro h2{white-space:normal;flex-wrap:wrap;justify-content:center;gap:12px;display:flex}.workflow-section .section-intro p,.before-after-section .section-intro p{max-width:1040px}.quality-section{margin-top:102px}.quality-section .section-intro{margin-bottom:36px}.quality-section .section-intro h2{white-space:nowrap;justify-content:center;gap:16px;margin-top:16px;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:60px;font-weight:700;line-height:75px;display:flex}.quality-section .section-intro p{color:var(--muted);max-width:810px;margin:16px auto 0;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:16px;font-weight:500;line-height:27.2px}.quality-section .section-intro h2 span:first-child{background:linear-gradient(90deg,#755cff 0%,#3da0ff 100%);color:#0000;-webkit-background-clip:text;background-clip:text}.seo-section h2{margin-top:10px;font-family:Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:clamp(2rem,3.125vw,3.75rem);line-height:1.05}.seo-section p,.steps-list p,.before-after-grid p,.use-case-grid p,.tool-matrix p,.faq-list p,.article-grid p{color:var(--muted);font-weight:600;line-height:1.7}.seo-feature-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;max-width:1403.19px;margin:0 auto}.seo-feature-grid article{background:linear-gradient(#ffffffe0 0%,#f6f5ffe0 100%);border:1.284px solid #dfe6f6;border-radius:20px;min-height:376.569px;padding:49.284px 35.284px 82.284px;box-shadow:0 20.551px 53.945px #46569617}.seo-feature-grid article:before{display:none}.seo-feature-grid .feature-card-icon{box-shadow:none;background:0 0;border:0;border-radius:0;width:74px;height:74px;margin:0 auto 22px;padding:0}.seo-feature-grid h3{color:var(--ink);font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:32px;font-weight:700;line-height:1.05}.seo-feature-grid p{color:var(--muted);margin-top:12px;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:20.551px;font-weight:400;line-height:34.936px}.split-section{grid-template-columns:minmax(260px,.85fr) minmax(0,1fr);align-items:start;gap:34px;display:grid}.split-section>div:first-child p{margin-top:14px}.steps-list{gap:12px;display:grid}.steps-list article{border:1px solid var(--line);box-shadow:var(--shadow-soft);background:#ffffffe0;border-radius:8px;grid-template-columns:auto minmax(0,1fr);align-items:start;gap:14px;padding:18px;display:grid}.steps-list strong{background:linear-gradient(135deg, var(--violet), var(--blue));color:#fff;border-radius:8px;place-items:center;width:34px;height:34px;font-size:1rem;display:grid}.steps-list h3,.use-case-grid h3,.tool-matrix h3,.article-grid h3{margin-bottom:8px;font-size:1.08rem;font-weight:950}.before-after-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.before-after-grid article,.use-case-grid article,.tool-matrix article,.article-grid article{border:1px solid var(--line);box-shadow:var(--shadow-soft);background:#ffffffe0;border-radius:8px;padding:22px;position:relative;overflow:hidden}.before-after-grid article:first-child{background:#f7f9fff0}.before-after-grid p{color:var(--ink);margin-top:12px;font-size:1.08rem}.workflow-cards{grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;display:grid;position:relative}.workflow-arrow{pointer-events:none;z-index:0;width:min(90%,1050px);position:absolute;left:50%;transform:translate(-50%)}.workflow-card{background:linear-gradient(#ffffffeb 0%,#f2f6ffeb 100%);border:1.2px solid #dce6f9;border-radius:24px;min-height:696px;padding:39px 34px 30px;position:relative;overflow:hidden;box-shadow:0 18px 42px #46569614}.workflow-card.rose{background:linear-gradient(#ffffffeb 0%,#fff4f4eb 100%);border-color:#ffdfe5}.workflow-card.green{background:linear-gradient(#ffffffeb 0%,#e7f5edeb 100%);border-color:#cce8d6}.workflow-number{-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);color:#7466ff;background:#7b61ff1a;border:1px solid #7466ff33;border-radius:16px;justify-content:center;align-items:center;width:64px;height:64px;font-family:Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:32px;font-weight:700;display:inline-flex}.workflow-card h3{color:var(--ink);margin-bottom:12px;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:32px;font-weight:700;line-height:1.05}.workflow-card p{color:var(--muted);font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:20.551px;font-weight:400;line-height:34.936px}.workflow-visual{position:absolute;bottom:0;left:50%;transform:translate(-50%)}.workflow-visual.input{width:415px;height:282px}.workflow-input-screen{width:100%;position:absolute;top:-26px;left:0}.workflow-input-card{width:100%;position:absolute;bottom:-2px;left:0}.workflow-input-cursor{width:86px;position:absolute;top:62px;left:13px}.workflow-input-frame{width:104px;position:absolute;top:53px;left:50%;transform:translate(-50%)}.workflow-visual.detector{width:450px;height:267px}.workflow-visual.humanizer{width:739px;height:236px}.workflow-paper{position:absolute;left:50%;transform:translate(-50%)}.detector-paper{width:224px;top:34px}.humanizer-paper{width:234px;top:8px}.workflow-label{color:#fff;white-space:nowrap;border-radius:999px;justify-content:center;align-items:center;padding:3px 8px;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:7px;font-weight:700;line-height:1;display:inline-flex;position:absolute}.detector-label{background:#8994a6;top:40px;left:50%;transform:translate(-50%)}.humanizer-label{background:#35af73;top:16px;left:50%;transform:translate(-50%)}.workflow-lines{background:#eef2f5;border-radius:4px;position:absolute;right:36px}.detector .line-1{width:195px;height:18px;top:63px}.detector .line-2{width:195px;height:18px;top:87px}.detector .line-3{width:195px;height:18px;top:111px}.humanizer .line-1{width:203px;height:18px;top:39px}.humanizer .line-2{width:203px;height:18px;top:64px}.humanizer .line-3{width:203px;height:18px;top:89px}.workflow-detector-result{width:431px;position:absolute;top:121px;left:50%;transform:translate(-50%)}.workflow-alert{width:69px;position:absolute;top:37px;right:26px}.workflow-humanizer-result{width:431px;position:absolute;top:100px;left:146px}.workflow-side-arrow{width:45px;position:absolute}.detector-arrow{top:57px;left:58px}.humanizer-arrow{top:33px;left:200px}.workflow-thumb{width:88px;position:absolute;top:38px;right:0}.before-after-section{max-width:1520px}.before-after-section .section-intro{margin-bottom:34px}.before-after-showcase{grid-template-columns:52px minmax(0,1fr) minmax(0,1fr) 52px;align-items:center;gap:18px;display:grid}.example-arrow{color:#151629;background:0 0;border:0;justify-content:center;align-items:center;width:52px;height:52px;padding:0;display:flex}.example-card{background:#fff;border:1px solid #c6d6ff;border-radius:36px;flex-direction:column;align-self:stretch;gap:12px;min-height:676px;padding:24px;display:flex;overflow:hidden}.example-card:last-of-type{justify-content:flex-start}.example-pill{border-radius:999px;align-self:flex-start;padding:10px 24px;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:18px;font-weight:500;line-height:1}.example-pill.original{color:#e94e4c;background:#e4565626}.example-pill.humanized{color:#32c468;background:#32c46826}.example-text{background:#fcfdff;border-radius:40px;flex:1;padding:16px 24px}.example-text p{color:#151629;font-size:20px;line-height:34.936px}.example-text p+p{margin-top:20px}.workflow-section{max-width:1552px}.workflow-section .section-intro{margin-bottom:34px}.workflow-cards{align-items:stretch;gap:24px;padding:104px 0 112px}.workflow-arrow{opacity:.78;width:min(76%,1010px)}.workflow-arrow.top{top:0}.workflow-arrow.bottom{bottom:2px}.workflow-card{z-index:1;min-height:688px;padding:39px 34px 26px}.workflow-copy{max-width:358px;margin-top:19px}.workflow-card h3{margin-bottom:10px;font-size:31px;font-weight:700}.workflow-card p{font-size:19.5px;font-weight:400;line-height:33px}.workflow-visual.input{width:415px;height:286px;bottom:36px}.workflow-input-screen{top:-20px}.workflow-visual.detector{width:450px;height:267px;bottom:58px}.workflow-visual.humanizer{width:430px;height:auto;bottom:72px}.workflow-detector-result,.workflow-humanizer-result{object-fit:contain;max-width:100%;margin:0 auto;display:block;position:static;top:auto;left:auto;transform:none}.workflow-detector-result{width:100%;margin-top:8px}.workflow-humanizer-result{width:100%;margin-top:0}.undetected-section{max-width:1644px;padding-top:12px}.undetected-panel{grid-template-columns:minmax(420px,1fr) minmax(420px,552px);align-items:center;gap:clamp(56px,8vw,130px);min-height:570px;display:grid}.undetected-demo{justify-content:center;align-items:center;min-height:420px;display:flex;position:relative}.undetected-glow{object-fit:fill;pointer-events:none;z-index:0;width:min(820px,112%);height:352px;position:absolute;top:50%;left:50%;transform:translate(-50%,-51%)}.undetected-score{color:#151629;text-align:center;z-index:2;width:100%;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:20.551px;font-weight:400;line-height:34.936px;position:absolute;top:98px;left:50%;transform:translate(-50%)}.undetected-score strong{color:#4eca7c;font-weight:700}.undetected-card{z-index:1;justify-content:center;align-items:center;width:min(770px,100%);height:159px;margin-top:54px;display:flex;position:relative}.undetected-border{object-fit:fill;pointer-events:none;width:100%;height:100%;position:absolute;inset:0}.undetected-card p{color:#667085;text-align:center;max-width:660px;margin:0;padding:0 52px;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:20.551px;font-weight:400;line-height:34.936px;position:relative}.undetected-copy{flex-direction:column;align-items:flex-start;gap:24px;display:flex}.undetected-copy h2{color:#151629;flex-direction:column;margin:0;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:clamp(2.8rem,3.125vw,60px);font-weight:700;line-height:1.25;display:flex}.undetected-copy h2 strong{color:#151629;font:inherit}.undetected-copy h2 em{background:linear-gradient(90deg,#745dff 0%,#3e9eff 100%);color:#0000;-webkit-background-clip:text;background-clip:text;font-style:normal}.undetected-copy>p{color:#667085;max-width:680px;margin:0;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:20.551px;font-weight:400;line-height:34.936px}.undetected-benefits{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;width:552px;margin-top:6px;display:grid}.undetected-benefits span{color:#a6a6b0;align-items:center;gap:12px;min-height:24px;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:16px;font-weight:400;line-height:24px;display:flex}.undetected-benefits img{width:20px;height:20px}.undetected-cta{color:#fff;text-align:center;background:linear-gradient(156deg,#ffffff38 0%,#fff0 100%),linear-gradient(142deg,#7b61ff 10.82%,#5aa7ff 103.42%);border-radius:12px;justify-content:center;align-items:center;min-width:383px;min-height:52px;padding:11px 16px 12px;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:20px;font-weight:700;line-height:28px;text-decoration:none;display:inline-flex}.audience-section{max-width:1644px;margin-top:118px}.audience-section .section-intro{margin-bottom:68px}.audience-section .section-intro h2{color:#151629;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:clamp(2.8rem,3.125vw,60px);font-weight:700;line-height:75px}.audience-section .section-intro h2 span{background:linear-gradient(90deg,#745dff 0%,#3e9eff 100%);color:#0000;-webkit-background-clip:text;background-clip:text}.audience-section .section-intro p{color:#667085;max-width:944px;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:20.551px;font-weight:400;line-height:34.936px}.audience-section .use-case-grid{gap:16px}.audience-section .use-case-grid article{box-shadow:none;text-align:center;background:linear-gradient(#fff 0%,#f2f8ffe8 100%);border:1px solid #c6d6ff;border-radius:36px;flex-direction:column;justify-content:flex-start;align-items:center;gap:16px;height:407px;padding:60px 34px;display:flex;position:relative;overflow:hidden}.audience-section .use-case-grid article:after{content:"";filter:blur(30px);opacity:.1;background:#63bbf14d;border-radius:9999px;width:221px;height:160px;position:absolute;bottom:-142px;left:-61px}.use-case-icon{object-fit:contain;width:64px;height:64px;display:block}.audience-section .use-case-grid article:first-child .use-case-icon{width:68px;height:68px}.audience-section .use-case-grid h3{color:#151629;max-width:300px;margin:0;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:32px;font-weight:700;line-height:normal}.audience-section .use-case-grid p{color:#667085;max-width:340px;margin:0;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:20.551px;font-weight:400;line-height:34.936px}.before-after-showcase{gap:16px}.example-arrow.prev svg{transform:rotate(90deg)}.example-arrow.next svg{transform:rotate(-90deg)}.example-pill{font-size:17px;font-weight:500}.example-text p{font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:19px;font-weight:400;line-height:33px}.use-case-grid,.tool-matrix,.article-grid{gap:16px;display:grid}.use-case-grid,.tool-matrix{grid-template-columns:repeat(4,minmax(0,1fr))}.tool-matrix svg{color:var(--violet);margin-bottom:18px}.faq-section{max-width:1487px}.faq-section .section-intro{margin-bottom:34px}.faq-section .section-intro h2{color:#151629;margin-top:0;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:clamp(2.5rem,3.125vw,60px);font-weight:700;line-height:75px}.faq-section .section-intro p{color:#667085;max-width:1008px;margin:8px auto 0;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:20.551px;font-weight:400;line-height:34.936px}.faq-list{gap:24px;display:grid}.faq-row{grid-template-columns:repeat(2,minmax(0,1fr));align-items:stretch;gap:12px;display:grid}.faq-card{background:linear-gradient(#ffffffe0 0%,#f6f5ffe0 100%);border:1.284px solid #dfe6f6;border-radius:20px;flex-direction:column;height:100%;min-height:96px;padding:0;display:flex;overflow:hidden;box-shadow:0 20.551px 53.945px #46569617}.faq-question{color:#151629;cursor:pointer;text-align:left;background:0 0;border:0;justify-content:space-between;align-items:center;gap:20px;width:100%;min-height:96px;padding:25px 33px;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:20px;font-weight:700;line-height:1.3;display:flex}.faq-question:hover{transform:none}.faq-question:after{content:"";border-bottom:2.5px solid;border-right:2.5px solid;flex:none;width:9px;height:9px;transition:transform .18s;transform:rotate(45deg)}.faq-card.open .faq-question:after{transform:rotate(225deg)translate(-2px,-2px)}.faq-answer{flex:1;padding:0 33px 30px}.faq-answer p{color:#667085;margin:0;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:18px;font-weight:400;line-height:1.65}.faq-answer p+p{margin-top:18px}.article-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.article-grid h3{margin-top:12px}.tool-matrix-section,.article-section{max-width:1180px;margin-top:70px}.tool-matrix-section .section-intro,.billing-section .section-intro,.article-section .section-intro{margin-bottom:24px}.tool-matrix-section h2,.billing-section h2,.article-section h2{font-size:clamp(1.8rem,2.55vw,3rem);line-height:1.08}.tool-matrix-section .section-intro p,.article-section .section-intro p{max-width:760px;margin-left:auto;margin-right:auto;font-size:.98rem;line-height:1.62}.tool-matrix,.article-grid{gap:14px}.tool-matrix article,.article-grid article{padding:18px}.tool-matrix svg{margin-bottom:12px}.tool-matrix h3,.article-grid h3{margin-bottom:6px;font-size:1rem}.tool-matrix p,.article-grid p{font-size:.94rem;line-height:1.58}.ethical-use-section{max-width:1152px;margin-top:84px}.ethical-use-card{text-align:center;background:#ffffff38;border:1px solid #6051f14d;border-radius:24px;padding:57px 128px;overflow:hidden}.ethical-use-card h2{color:#151629;margin:0 0 10px;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:36px;font-weight:700;line-height:40px}.ethical-use-card .ethical-use-subtitle{color:#6152f1;margin:0 0 4px;font-size:20.551px;font-weight:400;line-height:34.936px}.ethical-use-card p:not(.ethical-use-subtitle){color:#151629;max-width:896px;margin:0 auto;font-size:16px;font-weight:400;line-height:24px}.final-cta-section{max-width:1152px;margin-top:52px}.final-cta-card{text-align:center;background:radial-gradient(at 6% 2%,#e4effff2,#0000 34%),radial-gradient(circle at 92% 18%,#937fff38,#0000 36%),linear-gradient(#fff 0%,#f2f8ffe8 100%);border:1px solid #c6d6ff;border-radius:29px;flex-direction:column;align-items:center;gap:26px;padding:58px 24px 30px;display:flex;position:relative;overflow:hidden}.final-cta-card:before,.final-cta-card:after{content:"";filter:blur(30px);pointer-events:none;z-index:0;border-radius:9999px;position:absolute}.final-cta-card:before{opacity:.8;background:#e4efff;width:340px;height:228px;top:-68px;left:-93px}.final-cta-card:after{filter:blur(32px);background:linear-gradient(225deg,#937fff45 0%,#9580ff00 50%,#947fff12 100%);width:384px;height:384px;top:-13px;right:-12px}.final-cta-card h2,.final-cta-card p,.final-cta-card a{z-index:1;position:relative}.final-cta-card h2{flex-direction:column;gap:10px;margin:0;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:clamp(2.8rem,3.125vw,60px);font-weight:700;line-height:70px;display:flex}.final-cta-card h2 span{color:#151629}.final-cta-card h2 strong{background:linear-gradient(90deg,#745dff 0%,#3e9eff 100%);color:#0000;font:inherit;-webkit-background-clip:text;background-clip:text}.final-cta-card p{color:#151629;margin:-1px 0 0;font-size:16px;font-weight:400;line-height:24px}.final-cta-card a{color:#fff;background:linear-gradient(160deg,#ffffff38 0%,#fff0 100%),linear-gradient(147deg,#7b61ff 10.82%,#5aa7ff 103.42%);border-radius:12px;justify-content:center;min-width:373px;padding:12px 62px;font-size:20px;font-weight:700;line-height:28px;display:inline-flex}.site-footer{background:#f8faff;border:0;flex-direction:column;gap:32px;width:100%;margin:52px auto 0;padding:0 20px 12px;display:flex}.site-footer-rule{border-top:1px dashed #d9e1f2;width:min(1788px,100%);height:0;margin:0 auto}.site-footer-inner{grid-template-columns:240px 330px;justify-content:center;gap:146px;width:100%;max-width:1440px;min-height:129px;margin:0 auto;display:grid}.footer-link-group{flex-direction:column;gap:12px;display:flex}.footer-link-group h2{color:#151629;margin:0;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:20px;font-weight:400;line-height:30px}.footer-link-columns{gap:12px;display:flex}.footer-link-columns.legal-links{gap:10px}.footer-link-columns div{gap:12px;min-width:144px;display:grid}.footer-link-columns.legal-links div{min-width:160px}.site-footer a{color:#07070799;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:18px;font-weight:400;line-height:27px}.site-footer a:hover{color:#6152f1}.policy-page{background:radial-gradient(circle at 20% 8%,#e4effff2,#0000 25%),radial-gradient(circle at 88% 12%,#937fff2e,#0000 28%),#f8faff;min-height:100vh;padding:24px 20px 80px}.policy-header{justify-content:space-between;align-items:center;max-width:1120px;margin:0 auto 34px;display:flex}.policy-brand,.policy-back-link{font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-weight:700}.policy-brand{color:#151629;font-size:20px}.policy-back-link{color:#6152f1;background:#fff;border:1px solid #dfe6f6;border-radius:999px;padding:10px 18px;font-size:15px;box-shadow:0 12px 28px #46569614}.policy-document{background:linear-gradient(#fffffff5 0%,#f6fafff0 100%);border:1px solid #c6d6ff;border-radius:29px;max-width:1120px;margin:0 auto;padding:clamp(32px,5vw,70px);box-shadow:0 24px 70px #46569617}.policy-document h1{color:#151629;margin:8px 0 10px;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:clamp(2.5rem,4.5vw,60px);font-weight:700;line-height:1.12}.policy-updated{color:#6152f1;font-size:18px;font-weight:500;line-height:1.5}.policy-intro{border-bottom:1px dashed #d9e1f2;gap:12px;margin:30px 0 34px;padding-bottom:30px;display:grid}.policy-document p,.policy-document li{color:#667085;font-size:18px;font-weight:400;line-height:1.76}.policy-sections{gap:30px;display:grid}.policy-sections section{gap:12px;display:grid}.policy-sections h2{color:#151629;margin:0;font-family:TikTok Sans,Outfit,Microsoft YaHei,PingFang SC,sans-serif;font-size:28px;font-weight:700;line-height:1.25}.policy-sections ul{gap:10px;margin:0;padding-left:22px;display:grid}.seo-scale-zone{--seo-scale:.84}.seo-scale-zone .detector-logo-band{max-width:1525px;height:103px;margin-top:32px}.seo-scale-zone .detector-logo{transform:scale(var(--seo-scale));transform-origin:50%}.seo-scale-zone .seo-section{max-width:1247px;margin-top:86px;padding-left:16px;padding-right:16px}.seo-scale-zone .workflow-section{max-width:1304px}.seo-scale-zone .undetected-section,.seo-scale-zone .audience-section,.seo-scale-zone .billing-section{max-width:1381px}.seo-scale-zone .faq-section{max-width:1250px}.seo-scale-zone .ethical-use-section,.seo-scale-zone .final-cta-section{max-width:968px}.seo-scale-zone .quality-section{margin-top:100px}.seo-scale-zone .audience-section{margin-top:112px}.seo-scale-zone .billing-section{margin-top:130px}.seo-scale-zone .faq-section{margin-top:128px}.seo-scale-zone .ethical-use-section{margin-top:132px}.seo-scale-zone .section-intro{max-width:1032px;margin-bottom:27px}.seo-scale-zone .workflow-section .section-intro,.seo-scale-zone .faq-section .section-intro{margin-bottom:32px}.seo-scale-zone .audience-section .section-intro{margin-bottom:64px}.seo-scale-zone .section-kicker,.seo-scale-zone .article-grid span,.seo-scale-zone .before-after-grid span{font-size:.72rem}.seo-scale-zone .seo-section h2,.seo-scale-zone .quality-section .section-intro h2,.seo-scale-zone .audience-section .section-intro h2,.seo-scale-zone .faq-section .section-intro h2{font-size:clamp(2.02rem,2.63vw,50.4px);line-height:1.18}.seo-scale-zone .quality-section .section-intro h2,.seo-scale-zone .workflow-section .section-intro h2,.seo-scale-zone .before-after-section .section-intro h2{gap:10px}.seo-scale-zone .section-intro p,.seo-scale-zone .quality-section .section-intro p,.seo-scale-zone .audience-section .section-intro p,.seo-scale-zone .faq-section .section-intro p{max-width:793px;font-size:.96rem;line-height:1.62}.seo-scale-zone .seo-feature-grid{gap:21px}.seo-scale-zone .seo-feature-grid article,.seo-scale-zone .feature-grid article{border-radius:17px;min-height:316px;padding:41px 30px 69px}.seo-scale-zone .seo-feature-grid .feature-card-icon,.seo-scale-zone .feature-card-icon{border-radius:0;width:76px;height:76px;margin-bottom:20px;padding:0}.seo-scale-zone .feature-grid h3,.seo-scale-zone .use-case-grid h3,.seo-scale-zone .tool-matrix h3,.seo-scale-zone .article-grid h3{font-size:1rem}.seo-scale-zone .seo-feature-grid h3{font-size:26px;line-height:1.18}.seo-scale-zone .seo-section p,.seo-scale-zone .steps-list p,.seo-scale-zone .before-after-grid p,.seo-scale-zone .use-case-grid p,.seo-scale-zone .tool-matrix p,.seo-scale-zone .faq-list p,.seo-scale-zone .article-grid p{font-size:.94rem;line-height:1.58}.seo-scale-zone .workflow-cards{gap:21px;padding:68px 0 76px}.seo-scale-zone .workflow-arrow{width:min(76%,848px)}.seo-scale-zone .workflow-card{border-radius:20px;min-height:505px;padding:29px 29px 20px}.seo-scale-zone .workflow-number{width:38px;height:38px}.seo-scale-zone .workflow-copy{max-width:301px;margin-top:13px}.seo-scale-zone .workflow-card h3{margin-bottom:8px;font-size:26px}.seo-scale-zone .workflow-card p{font-size:16.4px;line-height:27.7px}.seo-scale-zone .workflow-visual.input{width:318px;height:206px;bottom:58px}.seo-scale-zone .workflow-visual.detector{width:340px;height:195px;bottom:73px}.seo-scale-zone .workflow-visual.humanizer{width:326px;bottom:83px}.seo-scale-zone .undetected-section{padding-top:9px}.seo-scale-zone .undetected-panel{grid-template-columns:minmax(353px,1fr) minmax(353px,464px);gap:clamp(47px,6.7vw,109px);min-height:479px}.seo-scale-zone .undetected-demo{min-height:353px}.seo-scale-zone .undetected-glow{height:296px}.seo-scale-zone .undetected-score{font-size:17.3px;line-height:29px;top:82px}.seo-scale-zone .undetected-card{width:min(647px,100%);height:134px;margin-top:45px}.seo-scale-zone .undetected-card p{max-width:554px;padding:0 44px;font-size:17.3px;line-height:29px}.seo-scale-zone .undetected-copy{gap:21px}.seo-scale-zone .undetected-copy h2{font-size:clamp(2.35rem,2.63vw,50.4px);line-height:1.25}.seo-scale-zone .undetected-copy>p{max-width:571px;font-size:17.3px;line-height:29px}.seo-scale-zone .undetected-benefits{gap:13px;width:464px}.seo-scale-zone .undetected-benefits span{gap:10px;font-size:13.4px;line-height:20px}.seo-scale-zone .undetected-benefits img{width:17px;height:17px}.seo-scale-zone .undetected-cta{border-radius:9px;min-width:322px;min-height:44px;font-size:16.8px;line-height:24px}.seo-scale-zone .audience-section .use-case-grid{gap:14px}.seo-scale-zone .audience-section .use-case-grid article{border-radius:30px;gap:14px;height:342px;padding:51px 29px}.seo-scale-zone .use-case-icon{width:54px;height:54px}.seo-scale-zone .audience-section .use-case-grid article:first-child .use-case-icon{width:57px;height:57px}.seo-scale-zone .audience-section .use-case-grid h3{max-width:252px;font-size:27px}.seo-scale-zone .audience-section .use-case-grid p{max-width:286px;font-size:17.3px;line-height:29px}.seo-scale-zone .before-after-showcase{grid-template-columns:44px minmax(0,1fr) minmax(0,1fr) 44px;gap:14px}.seo-scale-zone .example-arrow{width:44px;height:44px}.seo-scale-zone .example-card{border-radius:30px;min-height:568px;padding:21px}.seo-scale-zone .example-pill{padding:8px 21px;font-size:14px}.seo-scale-zone .example-text{border-radius:34px;padding:14px 21px}.seo-scale-zone .example-text p{font-size:16px;line-height:27.7px}.seo-scale-zone .billing-grid{gap:14px}.seo-scale-zone .billing-card{border-radius:30px;min-height:625px;padding:24px}.seo-scale-zone .billing-card.featured{transform:translateY(-3px)}.seo-scale-zone .billing-card h3{font-size:27px}.seo-scale-zone .billing-card p,.seo-scale-zone .billing-note,.seo-scale-zone .billing-features li{font-size:.88rem}.seo-scale-zone .billing-price strong{font-size:2.26rem}.seo-scale-zone .billing-button{min-height:43px}.seo-scale-zone .faq-list{gap:22px}.seo-scale-zone .faq-row{gap:11px}.seo-scale-zone .faq-card{border-radius:17px;min-height:81px}.seo-scale-zone .faq-question{min-height:81px;padding:21px 28px;font-size:16.8px}.seo-scale-zone .faq-answer{padding:0 28px 25px}.seo-scale-zone .faq-answer p{font-size:15px;line-height:1.62}.seo-scale-zone .tool-matrix-section,.seo-scale-zone .article-section{max-width:920px;margin-top:55px}.seo-scale-zone .tool-matrix,.seo-scale-zone .article-grid{gap:11px}.seo-scale-zone .tool-matrix article,.seo-scale-zone .article-grid article{padding:14px}.seo-scale-zone .ethical-use-card{border-radius:20px;padding:48px 108px}.seo-scale-zone .ethical-use-card h2{font-size:30px;line-height:34px}.seo-scale-zone .ethical-use-card .ethical-use-subtitle{font-size:17.3px;line-height:29px}.seo-scale-zone .ethical-use-card p:not(.ethical-use-subtitle){font-size:13.4px;line-height:20px}.seo-scale-zone .final-cta-section{margin-top:102px}.seo-scale-zone .final-cta-card{border-radius:24px;gap:22px;padding:49px 21px 25px}.seo-scale-zone .final-cta-card h2{gap:9px;font-size:clamp(2.35rem,2.63vw,50.4px);line-height:58.8px}.seo-scale-zone .final-cta-card p{font-size:13.4px;line-height:20px}.seo-scale-zone .final-cta-card a{border-radius:9px;min-width:313px;padding:10px 52px;font-size:16.8px;line-height:24px}.seo-scale-zone .site-footer{gap:27px;margin-top:54px;padding-bottom:10px}.seo-scale-zone .site-footer-inner{grid-template-columns:202px 277px;gap:123px;min-height:109px}.seo-scale-zone .footer-link-group{gap:10px}.seo-scale-zone .footer-link-group h2{font-size:16.8px;line-height:25px}.seo-scale-zone .footer-link-columns{gap:9px}.seo-scale-zone .footer-link-columns.legal-links{gap:8px}.seo-scale-zone .footer-link-columns div{gap:10px;min-width:121px}.seo-scale-zone .footer-link-columns.legal-links div{min-width:134px}.seo-scale-zone .site-footer a{font-size:15px;line-height:23px}.billing-page{align-items:center;min-height:100vh;padding:32px 20px;display:flex}.billing-result-card{border:1px solid var(--line);box-shadow:var(--shadow);text-align:center;background:#ffffffeb;border-radius:8px;max-width:620px;margin:0 auto;padding:34px}.billing-result-card h1{margin-top:10px;font-size:clamp(2rem,5vw,3.1rem);line-height:1.05}.billing-result-card p:not(.section-kicker){color:var(--muted);margin:16px auto 0;line-height:1.75}.billing-status-dot{border-radius:999px;width:14px;height:14px;display:inline-flex}.billing-status-dot.success{background:var(--green);box-shadow:0 0 0 8px #0f9b6d1a}.billing-status-dot.warning{background:var(--amber);box-shadow:0 0 0 8px #c779041f}.billing-plan-recap{border:1px solid var(--line);background:#f6f8ff;border-radius:8px;justify-content:space-between;align-items:center;margin:22px 0;padding:14px;display:flex}.billing-plan-recap strong{font-weight:950}.billing-plan-recap span{color:var(--muted);font-weight:850}.spin{animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}@keyframes progress-sheen{to{transform:translate(100%)}}@media (prefers-reduced-motion:no-preference){.workspace-shell,.hero-copy,.seo-section,.trust-band{animation:.58s both rise-in}.workspace-shell{animation-delay:80ms}.trust-band{animation-delay:.12s}.feature-grid article,.steps-list article,.before-after-grid article,.use-case-grid article,.tool-matrix article,.article-grid article{transition:border-color .18s,box-shadow .18s,transform .18s}.feature-grid article:hover,.steps-list article:hover,.before-after-grid article:hover,.use-case-grid article:hover,.tool-matrix article:hover,.article-grid article:hover{border-color:#7c3df547;transform:translateY(-3px);box-shadow:0 20px 52px #533a7524}}@keyframes rise-in{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}@media (prefers-reduced-motion:reduce){.split-char,.rotating-word-char{opacity:1;animation:none;transform:none}}@media (max-width:1020px){.site-header{flex-direction:column;align-items:stretch;position:static}.site-header nav{justify-content:flex-start;max-width:none;overflow-x:auto}.header-tools{justify-content:space-between}.editor-grid,.analysis-grid,.feature-grid,.billing-grid,.seo-feature-grid,.split-section,.workflow-cards,.before-after-showcase,.before-after-grid,.use-case-grid,.tool-matrix,.article-grid{grid-template-columns:1fr}.editor-pane{min-height:430px}.workspace-shell{min-height:auto}textarea,.highlight-output,.processing-output{min-height:310px}.workflow-card,.example-card{min-height:0}.workflow-visual{transform-origin:bottom;position:relative;transform:translate(-50%)scale(.82)}.workflow-cards{gap:18px;padding:0}.workflow-arrow{display:none}.before-after-showcase{grid-template-columns:1fr}.undetected-panel{grid-template-columns:1fr;gap:32px;min-height:0}.undetected-demo{min-height:360px}.undetected-copy{text-align:center;align-items:center}.undetected-copy>p{max-width:720px}.undetected-benefits{width:100%;max-width:552px}.example-arrow{display:none}.result-body{grid-template-columns:1fr}.cross-check-panel{border-left:0;border-top:1px solid var(--line);padding-top:24px;padding-left:0}.ethical-use-card{padding:42px 40px}.site-footer-inner{grid-template-columns:repeat(2,minmax(0,max-content));gap:48px}}@media (max-width:680px){body:before{height:100vh}.site-header{width:calc(100% - 24px);margin-top:14px}.site-header nav{border-radius:8px;grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.site-header nav a{text-align:center;white-space:normal;justify-content:center;align-items:center;min-height:44px;padding:8px;display:flex}.hero-band{margin-top:30px}.hero-band:before{top:178px}.workspace-shell,.pricing-band{width:calc(100% - 24px)}.undetected-demo{min-height:310px}.undetected-glow{width:118%;height:260px}.undetected-score{font-size:15px;line-height:24px;top:82px}.undetected-card{height:118px}.undetected-card p{padding:0 28px;font-size:14px;line-height:22px}.undetected-copy h2,.audience-section .section-intro h2{font-size:2.25rem;line-height:1.15}.undetected-copy>p,.audience-section .section-intro p{font-size:1rem;line-height:1.7}.undetected-benefits{grid-template-columns:1fr}.undetected-cta{width:100%;min-width:0}.audience-section{margin-top:72px}.audience-section .section-intro{margin-bottom:34px}.audience-section .use-case-grid article{height:auto;min-height:330px;padding:42px 24px}.workspace-toolbar,.pane-actions,.pricing-band,.header-tools{flex-direction:column;align-items:stretch}.mode-tabs{border-radius:8px;grid-template-columns:repeat(3,1fr);display:grid}.mode-tabs button{border-radius:8px;padding:7px 8px}.style-select,.score-badge,.language-button,.primary-button,.secondary-button,.quiet-button{width:100%}.language-menu{min-width:100%;left:0;right:auto}.header-actions{grid-template-columns:1fr 1fr;display:grid}.comparison{flex-direction:column}.result-card{padding:18px}.result-card.empty-result{align-items:flex-start}.result-message{text-align:left;justify-content:flex-start;align-items:flex-start}.cross-check-grid{grid-template-columns:1fr}.ethical-use-section,.final-cta-section{padding:0 12px}.ethical-use-card{padding:34px 20px}.ethical-use-card h2{font-size:2rem;line-height:1.15}.ethical-use-card .ethical-use-subtitle{white-space:normal;font-size:1rem;line-height:1.6}.ethical-use-card p:not(.ethical-use-subtitle){font-size:.92rem;line-height:1.7}.final-cta-card{gap:18px;padding:42px 18px 28px}.final-cta-card h2{gap:4px;font-size:2.35rem;line-height:1.12}.final-cta-card a{width:100%;min-width:0;padding:12px 18px;font-size:1rem}.site-footer{padding:0 24px 30px}.site-footer-inner{grid-template-columns:1fr;gap:28px;min-height:0}.footer-link-columns,.footer-link-columns.legal-links{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 20px;display:grid}.footer-link-columns div,.footer-link-columns.legal-links div{min-width:0}.site-footer a{font-size:.96rem;line-height:1.6}.policy-page{padding:18px 12px 54px}.policy-header{margin-bottom:18px}.policy-document{border-radius:22px;padding:28px 20px}.policy-document p,.policy-document li{font-size:1rem}.policy-sections h2{font-size:1.45rem}.donut{width:132px;height:132px}.donut>div{width:98px;height:98px}}