:root{--bg: #f8fafc;--bg-soft: #f1f5f9;--card: #ffffff;--border: #e2e8f0;--border-soft: #eef2f6;--text: #0f172a;--muted: #64748b;--muted-2: #94a3b8;--primary: #14b8a6;--primary-hover: #0d9488;--primary-soft: #f0fdfa;--primary-soft-border: #99f6e4;--primary-disabled: #5eead4;--primary-grad: linear-gradient(135deg, #14b8a6 0%, #3b82f6 100%);--error: #dc2626;--error-bg: #fef2f2;--error-border: #fecaca;--success: #16a34a;--r-sm: 8px;--r-md: 12px;--r-lg: 16px;--r-xl: 20px;--r-pill: 999px;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .04);--shadow: 0 1px 2px rgba(15, 23, 42, .04), 0 8px 24px -12px rgba(15, 23, 42, .12);--shadow-lg: 0 4px 8px -2px rgba(15, 23, 42, .06), 0 24px 48px -16px rgba(15, 23, 42, .18);--shadow-focus: 0 0 0 3px rgba(20, 184, 166, .18);--maxw: 720px}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-feature-settings:"cv11","ss01","tnum";line-height:1.5}a{color:inherit;text-decoration:none}button{font-family:inherit}.app{min-height:100vh;display:flex;flex-direction:column}.topbar{position:sticky;top:0;z-index:30;background:#f8fafccc;backdrop-filter:saturate(180%) blur(12px);-webkit-backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--border-soft)}.topbar-inner{max-width:var(--maxw);margin:0 auto;padding:12px 20px;display:flex;align-items:center;justify-content:space-between}.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.01em}.brand-logo{width:28px;height:28px;display:block}.brand-name{font-size:15px}.topnav{display:flex;align-items:center;gap:4px}.nav-link{display:inline-flex;align-items:center;padding:7px 12px;font-size:13px;color:var(--muted);border-radius:var(--r-sm);transition:color .15s,background .15s}.nav-link:hover{color:var(--text);background:var(--bg-soft)}.nav-plain{cursor:default;font-weight:600;letter-spacing:.5px}.nav-plain:hover{background:transparent;color:var(--muted)}.nav-github{padding:7px}.nav-icon{width:18px;height:18px}.hero{max-width:var(--maxw);margin:0 auto;padding:56px 20px 32px;text-align:center}.hero-badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px 5px 8px;background:var(--primary-soft);border:1px solid var(--primary-soft-border);border-radius:var(--r-pill);font-size:12px;font-weight:600;color:#0f766e}.hero-badge-icon{width:14px;height:14px}.hero-title{margin:0;font-size:34px;line-height:1.15;letter-spacing:-.02em;font-weight:700}.hero-title-accent{display:block;margin-top:4px;background:var(--primary-grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.hero-sub{margin:18px 0 0;color:var(--muted);font-size:15px}.app-main{max-width:var(--maxw);width:100%;margin:0 auto;padding:8px 20px 32px;display:flex;flex-direction:column;gap:18px;flex:1}.uploader{display:flex;flex-direction:column;gap:8px}.dropzone{border:2px dashed var(--border);border-radius:var(--r-lg);padding:36px 20px;text-align:center;cursor:pointer;transition:border-color .18s,background .18s,transform .18s;background:var(--card);outline:none}.dropzone:hover,.dropzone:focus-visible{border-color:var(--primary);background:var(--primary-soft)}.dropzone.dragging{border-color:var(--primary);background:var(--primary-soft);transform:scale(1.005)}.dropzone.has-file{padding:16px 18px;text-align:left;border-style:solid}.dropzone-empty{display:flex;flex-direction:column;align-items:center;gap:8px}.upload-icon-wrap{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:var(--r-md);background:var(--primary-soft);color:var(--primary);margin-bottom:4px}.upload-icon{width:22px;height:22px}.dropzone-text{font-weight:600;font-size:15px}.dropzone-hint{color:var(--muted);font-size:12px}.file-info{display:flex;align-items:center;gap:14px}.file-icon-wrap{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--r-sm);background:var(--primary-soft);color:var(--primary);flex-shrink:0}.file-icon{width:20px;height:20px}.file-meta{flex:1;min-width:0}.file-name{font-weight:600;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-sub{color:var(--muted);font-size:12px;margin-top:2px;display:flex;align-items:center;gap:6px}.file-sub .dot{color:var(--muted-2)}.file-clear{background:transparent;border:none;cursor:pointer;padding:6px;border-radius:var(--r-sm);color:var(--muted);display:inline-flex;transition:background .15s,color .15s}.file-clear:hover{background:var(--bg-soft);color:var(--error)}.clear-icon{width:16px;height:16px}.uploader-error{color:var(--error);font-size:13px;padding-left:4px}.verify-row{display:flex;justify-content:center;min-height:65px}.turnstile-container{min-height:65px}.btn-submit{background:var(--primary-grad);color:#fff;border:none;border-radius:var(--r-md);padding:15px 24px;font-size:15px;font-weight:600;cursor:pointer;transition:transform .12s,box-shadow .18s,filter .18s;display:inline-flex;align-items:center;justify-content:center;gap:8px;box-shadow:0 4px 12px -4px #14b8a673}.btn-submit:hover:not(:disabled){filter:brightness(1.04);box-shadow:0 6px 20px -4px #14b8a68c}.btn-submit:active:not(:disabled){transform:translateY(1px)}.btn-submit:disabled{background:var(--primary-disabled);cursor:not-allowed;box-shadow:none;filter:none}.btn-submit-icon{width:16px;height:16px}.spinner-sm{width:14px;height:14px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}.shortcut-hint{text-align:center;font-size:12px;color:var(--muted-2);margin-top:-4px}.loading{text-align:center;padding:24px 0 8px;color:var(--muted);font-size:13px}.spinner{width:32px;height:32px;border:3px solid var(--primary-soft-border);border-top-color:var(--primary);border-radius:50%;margin:0 auto 12px;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.app-error{background:var(--error-bg);border:1px solid var(--error-border);color:var(--error);padding:12px 14px;border-radius:var(--r-md);font-size:13px;line-height:1.5}.result{border:1px solid var(--border);border-radius:var(--r-lg);overflow:hidden;background:var(--card);box-shadow:var(--shadow)}.result-tabs{display:flex;gap:8px;padding:10px 12px;background:var(--bg-soft);border-bottom:1px solid var(--border);flex-wrap:wrap;align-items:center;justify-content:space-between}.tabs-nav{display:flex;gap:2px;flex-wrap:wrap}.tabs-nav button{background:transparent;border:none;padding:7px 12px;border-radius:var(--r-sm);cursor:pointer;font-size:13px;font-weight:500;color:var(--muted);transition:background .15s,color .15s}.tabs-nav button:hover:not(.active):not(:disabled){background:var(--card);color:var(--text)}.tabs-nav button.active{background:var(--card);color:var(--text);font-weight:600;box-shadow:var(--shadow-sm)}.tabs-nav button:disabled{opacity:.4;cursor:not-allowed}.result-actions{display:flex;gap:6px;margin-left:auto}.btn-copy,.btn-download{display:inline-flex;align-items:center;gap:5px;background:var(--card);border:1px solid var(--border);border-radius:var(--r-sm);padding:6px 10px;font-size:12px;font-weight:500;cursor:pointer;color:var(--text);transition:border-color .15s,color .15s,background .15s}.btn-copy:hover:not(:disabled),.btn-download:hover:not(:disabled){border-color:var(--primary);color:var(--primary)}.btn-copy:disabled,.btn-download:disabled{opacity:.4;cursor:not-allowed}.btn-icon{width:14px;height:14px}.result-body{padding:18px 20px;max-height:480px;overflow-y:auto}.result-preview{display:flex;flex-direction:column;gap:0}.segment{display:flex;flex-direction:column;gap:4px;padding:12px 0;border-bottom:1px solid var(--border-soft);position:relative}.segment:first-child{padding-top:4px}.segment:last-child{border-bottom:none;padding-bottom:4px}.segment-head{display:flex;align-items:center;justify-content:space-between;gap:8px}.segment-time{font-size:11px;color:var(--primary);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:600;letter-spacing:.02em}.seg-copy{background:transparent;border:1px solid transparent;border-radius:var(--r-sm);padding:2px 8px;font-size:11px;color:var(--muted-2);cursor:pointer;opacity:0;transition:opacity .15s,color .15s,border-color .15s,background .15s}.segment:hover .seg-copy,.seg-copy:focus-visible{opacity:1}.seg-copy:hover{color:var(--primary);border-color:var(--primary-soft-border);background:var(--primary-soft)}.segment-text{font-size:15px;line-height:1.65;color:var(--text)}.result-plaintext{margin:0;line-height:1.7;white-space:pre-wrap;font-size:15px}.result-code{margin:0;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;line-height:1.6;white-space:pre-wrap;word-break:break-word;color:var(--text)}.result-meta{padding:10px 20px;background:var(--bg-soft);border-top:1px solid var(--border);font-size:12px;color:var(--muted);display:flex;align-items:center;flex-wrap:wrap;gap:6px}.result-meta .sep{color:var(--muted-2)}.meta-usage{color:var(--primary);font-weight:600}.trust-bar{max-width:var(--maxw);margin:0 auto;padding:8px 20px 40px;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.trust-item{display:flex;align-items:flex-start;gap:10px;padding:14px;background:var(--card);border:1px solid var(--border-soft);border-radius:var(--r-md)}.trust-icon{width:18px;height:18px;color:var(--primary);flex-shrink:0;margin-top:1px}.trust-title{font-size:13px;font-weight:600;color:var(--text)}.trust-desc{font-size:11px;color:var(--muted);margin-top:2px;line-height:1.45}.app-footer{border-top:1px solid var(--border-soft);background:var(--bg-soft);padding:48px 20px 24px;margin-top:64px}.footer-inner{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:1.4fr 2fr;gap:48px;align-items:start}.footer-brand{display:flex;align-items:center;gap:12px}.footer-logo{width:32px;height:32px;flex-shrink:0}.footer-brand-text{display:flex;flex-direction:column;gap:2px}.footer-name{font-size:15px;font-weight:650;color:var(--text);letter-spacing:-.01em}.footer-tagline{font-size:12px;color:var(--muted)}.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}.footer-col{display:flex;flex-direction:column;gap:8px}.footer-col-title{font-size:12px;font-weight:650;color:var(--text);margin-bottom:4px;letter-spacing:.02em;text-transform:uppercase}.footer-link,.footer-text{font-size:13px;color:var(--muted);transition:color .15s}.footer-link:hover{color:var(--primary)}.footer-text{cursor:default}.footer-bottom{max-width:var(--maxw);margin:32px auto 0;padding-top:20px;border-top:1px solid var(--border-soft);display:flex;align-items:center;flex-wrap:wrap;gap:6px;font-size:12px;color:var(--muted-2)}.footer-dot{color:var(--muted-2)}@media (max-width: 720px){.footer-inner{grid-template-columns:1fr;gap:32px}.footer-cols{grid-template-columns:repeat(2,1fr);gap:24px}.footer-bottom{flex-direction:column;align-items:flex-start;gap:4px}}.drop-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;background:#14b8a614;backdrop-filter:blur(2px);-webkit-backdrop-filter:blur(2px);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:600;color:var(--primary);border:3px dashed var(--primary);pointer-events:none}.toast{position:fixed;bottom:28px;left:50%;transform:translate(-50%);z-index:200;display:inline-flex;align-items:center;gap:8px;padding:10px 16px;background:var(--text);color:#fff;border-radius:var(--r-pill);font-size:13px;font-weight:500;box-shadow:var(--shadow-lg);animation:toast-in .18s ease-out}.toast-icon{width:14px;height:14px;color:#4ade80}@keyframes toast-in{0%{opacity:0;transform:translate(-50%,8px)}to{opacity:1;transform:translate(-50%)}}.result-body::-webkit-scrollbar{width:8px}.result-body::-webkit-scrollbar-track{background:transparent}.result-body::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}.result-body::-webkit-scrollbar-thumb:hover{background:var(--muted-2)}@media (max-width: 640px){.hero{padding:36px 18px 24px}.hero-title{font-size:26px}.hero-sub{font-size:14px}.app-main{padding:8px 16px 24px}.trust-bar{grid-template-columns:1fr;padding:8px 16px 32px;gap:8px}.trust-item{padding:12px}.result-actions{margin-left:0;width:100%;margin-top:6px}.btn-copy,.btn-download{flex:1;justify-content:center}.seg-copy{opacity:1}.topbar-inner{padding:10px 16px}.drop-overlay{font-size:15px;padding:0 20px;text-align:center}}