@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;500;600;700&display=swap');:root{--bg-paper:#f7f4ed;--bg-paper-light:#fdfcf9;--ink-black:#2b2b2b;--ink-light:#4a4a4a;--seal-red:#b83b3b;--seal-red-dark:#8f2d2d;--seal-red-light:#d4524f;--indigo-blue:#3a5f85;--indigo-dark:#2c4a68;--jade-green:#5d8c6b;--gold-yellow:#c9a227;--border-gray:#d4cfc3;--border-dark:#b8b0a0;--shadow-soft:0 4px 15px rgba(43,43,43,0.08);--shadow-medium:0 6px 20px rgba(43,43,43,0.12);--shadow-strong:0 8px 30px rgba(43,43,43,0.15);--shadow-inner:inset 0 2px 4px rgba(43,43,43,0.06);--font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;--spacing-xs:8px;--spacing-sm:12px;--spacing-md:20px;--spacing-lg:32px;--spacing-xl:48px;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--transition-fast:0.15s ease;--transition-normal:0.25s ease;--transition-slow:0.4s ease}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font-serif);background-color:var(--bg-paper);color:var(--ink-black);min-height:100vh;display:flex;flex-direction:column;line-height:1.6;background-image:radial-gradient(ellipse at 20% 30%,rgba(212,207,195,0.3) 0%,transparent 50%),radial-gradient(ellipse at 80% 70%,rgba(212,207,195,0.2) 0%,transparent 50%),url("data:image/svg+xml,%3Csvg viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E")}.container{flex:1;width:100%;max-width:600px;margin:0 auto;padding:var(--spacing-lg) var(--spacing-md);display:flex;flex-direction:column;gap:var(--spacing-lg)}header{text-align:center;padding:var(--spacing-lg) var(--spacing-md);background:var(--bg-paper-light);border:1px solid var(--border-gray);border-radius:var(--radius-lg);box-shadow:var(--shadow-soft);position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--spacing-sm)}header::before{content:'';position:absolute;top:8px;left:8px;right:8px;bottom:8px;border:1px solid var(--border-gray);border-radius:var(--radius-md);pointer-events:none}.logo{width:80px;height:80px;object-fit:contain;filter:drop-shadow(0 2px 4px rgba(0,0,0,0.1));transition:transform var(--transition-normal);box-shadow:-8px 5px 10px rgb(0 0 0 / 50%);border-radius:50%}.logo:hover{transform:scale(1.05)}header h1{font-size:1.8rem;font-weight:700;color:var(--ink-black);letter-spacing:0.15em;position:relative;display:inline-block}header h1::before,header h1::after{content:'◆';position:absolute;top:50%;transform:translateY(-50%);color:var(--seal-red);font-size:0.5em;opacity:0.7}header h1::before{left:-1.5em}header h1::after{right:-1.5em}main{background:var(--bg-paper-light);border:1px solid var(--border-gray);border-radius:var(--radius-lg);padding:var(--spacing-lg);box-shadow:var(--shadow-medium);display:flex;flex-direction:column;gap:var(--spacing-md)}main>p{text-align:center;color:var(--ink-light);font-size:0.95rem;padding-bottom:var(--spacing-sm);border-bottom:1px dashed var(--border-gray)}.select2-container{width:100% !important}.select2-container--default .select2-selection--single{height:48px;border:2px solid var(--border-gray);border-radius:var(--radius-md);background:var(--bg-paper-light);font-family:var(--font-serif);font-size:1rem;transition:all var(--transition-fast)}.select2-container--default .select2-selection--single:hover{border-color:var(--border-dark)}.select2-container--default.select2-container--focus .select2-selection--single,.select2-container--default.select2-container--open .select2-selection--single{border-color:var(--indigo-blue);box-shadow:0 0 0 3px rgba(58,95,133,0.15)}.select2-container--default .select2-selection--single .select2-selection__rendered{line-height:44px;padding-left:16px;color:var(--ink-black);font-family:var(--font-serif)}.select2-container--default .select2-selection--single .select2-selection__arrow{height:46px;right:12px}.select2-container--default .select2-selection--single .select2-selection__arrow b{border-color:var(--ink-light) transparent transparent transparent}.select2-dropdown{border:2px solid var(--border-gray);border-radius:var(--radius-md);box-shadow:var(--shadow-medium);background:var(--bg-paper-light);font-family:var(--font-serif)}.select2-container--default .select2-results__option{padding:10px 16px;font-size:0.95rem}.select2-container--default .select2-results__option--highlighted[aria-selected]{background-color:var(--indigo-blue);color:white}.select2-container--default .select2-results__option[aria-selected="true"]{background-color:rgba(58,95,133,0.1);color:var(--indigo-blue)}.select2-container--default .select2-search--dropdown .select2-search__field{border:1px solid var(--border-gray);border-radius:var(--radius-sm);padding:8px 12px;font-family:var(--font-serif)}.select2-container--default .select2-search--dropdown .select2-search__field:focus{border-color:var(--indigo-blue);outline:none}#radicalSelect:not(.select2-hidden-accessible){width:100%;height:48px;padding:0 16px;border:2px solid var(--border-gray);border-radius:var(--radius-md);background:var(--bg-paper-light);font-family:var(--font-serif);font-size:1rem;color:var(--ink-black);cursor:pointer;transition:all var(--transition-fast);appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%234a4a4a' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center}#radicalSelect:not(.select2-hidden-accessible):hover{border-color:var(--border-dark)}#radicalSelect:not(.select2-hidden-accessible):focus{border-color:var(--indigo-blue);outline:none;box-shadow:0 0 0 3px rgba(58,95,133,0.15)}.manual-input-container{position:relative}.manual-input-container::before{content:'\f303';font-family:"Font Awesome 7 Free";font-weight:900;position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--ink-light);opacity:0.5;transition:opacity var(--transition-fast);pointer-events:none}#manualInput{width:100%;height:48px;padding:0 16px 0 44px;border:2px solid var(--border-gray);border-radius:var(--radius-md);background:var(--bg-paper-light);font-family:var(--font-serif);font-size:1.1rem;color:var(--ink-black);transition:all var(--transition-fast)}#manualInput::placeholder{color:var(--ink-light);opacity:0.5}#manualInput:hover{border-color:var(--border-dark)}#manualInput:focus{border-color:var(--indigo-blue);outline:none;box-shadow:0 0 0 3px rgba(58,95,133,0.15)}.manual-input-container:focus-within::before{opacity:0.8;color:var(--indigo-blue)}.result{min-height:120px;display:flex;align-items:center;justify-content:center;background:var(--bg-paper);border:2px solid var(--border-gray);border-radius:var(--radius-md);font-size:4rem;color:var(--ink-black);cursor:pointer;transition:all var(--transition-normal);position:relative;overflow:hidden;background-image:linear-gradient(90deg,var(--border-gray) 50%,transparent 50%),linear-gradient(90deg,var(--border-gray) 50%,transparent 50%),linear-gradient(0deg,var(--border-gray) 50%,transparent 50%),linear-gradient(0deg,var(--border-gray) 50%,transparent 50%);background-repeat:repeat-x,repeat-x,repeat-y,repeat-y;background-size:8px 1px,8px 1px,1px 8px,1px 8px;background-position:8px 8px,8px calc(100% - 8px),8px 8px,calc(100% - 8px) 8px}.result:empty::after{content:'待转换';font-size:1rem;color:var(--ink-light);opacity:0.4}.result:hover{border-color:var(--border-dark);box-shadow:var(--shadow-inner)}.result:active{background:var(--bg-paper-light)}.result::selection{background:rgba(184,59,59,0.2)}.buttons{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-sm)}button{height:48px;border:none;border-radius:var(--radius-md);font-family:var(--font-serif);font-size:0.95rem;font-weight:500;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:transform var(--transition-fast),box-shadow var(--transition-fast),background-color var(--transition-fast);position:relative;overflow:hidden}button::after{content:'';position:absolute;top:50%;left:50%;width:0;height:0;background:rgba(255,255,255,0.3);border-radius:50%;transform:translate(-50%,-50%);transition:width 0.4s ease,height 0.4s ease}button:active::after{width:200px;height:200px}#convertBtn,#generateBtn{background:linear-gradient(135deg,var(--seal-red) 0%,var(--seal-red-dark) 100%);color:white;box-shadow:0 3px 8px rgba(184,59,59,0.25)}#convertBtn::before{content:'\f0ec';font-family:"Font Awesome 7 Free";font-weight:900}#generateBtn::before{content:'\f00c';font-family:"Font Awesome 7 Free";font-weight:900}#convertBtn:active,#generateBtn:active{background:linear-gradient(135deg,var(--seal-red-dark) 0%,var(--seal-red-dark) 100%);transform:translateY(1px);box-shadow:0 1px 4px rgba(184,59,59,0.2)}#randomBtn,#copyBtn{background:linear-gradient(135deg,var(--indigo-blue) 0%,var(--indigo-dark) 100%);color:white;box-shadow:0 3px 8px rgba(58,95,133,0.25)}#randomBtn::before{content:'\f074';font-family:"Font Awesome 7 Free";font-weight:900}#copyBtn::before{content:'\f0c5';font-family:"Font Awesome 7 Free";font-weight:400}#randomBtn:active,#copyBtn:active{background:linear-gradient(135deg,var(--indigo-dark) 0%,var(--indigo-dark) 100%);transform:translateY(1px);box-shadow:0 1px 4px rgba(58,95,133,0.2)}#exampleBtn{grid-column:1 / -1;background:var(--bg-paper);color:var(--ink-black);border:2px solid var(--border-gray);box-shadow:none}#exampleBtn::before{content:'\f03e';font-family:"Font Awesome 7 Free";font-weight:400}#exampleBtn:active{background:var(--bg-paper-light);border-color:var(--border-dark);transform:translateY(1px)}@media (hover:hover){#convertBtn:hover,#generateBtn:hover{background:linear-gradient(135deg,var(--seal-red-light) 0%,var(--seal-red) 100%);transform:translateY(-2px);box-shadow:0 5px 15px rgba(184,59,59,0.35)}#randomBtn:hover,#copyBtn:hover{background:linear-gradient(135deg,#4a7299 0%,var(--indigo-blue) 100%);transform:translateY(-2px);box-shadow:0 5px 15px rgba(58,95,133,0.35)}#exampleBtn:hover{border-color:var(--indigo-blue);color:var(--indigo-blue);background:rgba(58,95,133,0.05)}}footer{text-align:center;padding:var(--spacing-md);color:var(--ink-light);font-size:0.85rem;opacity:0.7}footer p{display:flex;align-items:center;justify-content:center;gap:8px}footer p::before{content:'\f1fc';font-family:"Font Awesome 7 Free";font-weight:900;color:var(--seal-red);opacity:0.6}.alert-overlay,.image-preview-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(43,43,43,0.5);backdrop-filter:blur(4px);display:none;align-items:center;justify-content:center;z-index:1000;padding:var(--spacing-md);animation:fadeIn 0.2s ease}@keyframes fadeIn{from{opacity:0}to{opacity:1}}.alert-box{background:var(--bg-paper-light);border:2px solid var(--border-gray);border-radius:var(--radius-lg);padding:var(--spacing-lg);max-width:360px;width:100%;text-align:center;box-shadow:var(--shadow-strong);animation:slideUp 0.25s ease}@keyframes slideUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}#alertMessage{font-size:1rem;color:var(--ink-black);margin-bottom:var(--spacing-md);line-height:1.6}#alertCloseBtn{height:42px;padding:0 32px;background:linear-gradient(135deg,var(--seal-red) 0%,var(--seal-red-dark) 100%);color:white;border:none;border-radius:var(--radius-md);font-family:var(--font-serif);font-size:0.9rem;cursor:pointer;transition:all var(--transition-fast)}#alertCloseBtn:active{transform:translateY(1px);background:var(--seal-red-dark)}@media (hover:hover){#alertCloseBtn:hover{background:linear-gradient(135deg,var(--seal-red-light) 0%,var(--seal-red) 100%);transform:translateY(-1px);box-shadow:0 3px 10px rgba(184,59,59,0.3)}}.image-preview-box{max-width:90vw;max-height:85vh;background:var(--bg-paper-light);border:3px solid var(--border-gray);border-radius:var(--radius-lg);padding:var(--spacing-sm);box-shadow:var(--shadow-strong);overflow:hidden;animation:zoomIn 0.25s ease}@keyframes zoomIn{from{opacity:0;transform:scale(0.9)}to{opacity:1;transform:scale(1)}}#zoomedImage{max-width:100%;max-height:80vh;display:block;border-radius:var(--radius-sm);transition:transform 0.2s ease;cursor:zoom-in}@media screen and (max-width:768px){:root{--spacing-lg:24px;--spacing-xl:36px}.container{padding:var(--spacing-md)}header h1{font-size:1.5rem}header h1::before,header h1::after{display:none}.logo{width:64px;height:64px}.result{min-height:100px;font-size:3.5rem}}@media screen and (max-width:480px){:root{--spacing-md:16px;--spacing-lg:20px}html{font-size:15px}.container{padding:var(--spacing-sm);gap:var(--spacing-md)}header{padding:var(--spacing-md)}header::before{top:6px;left:6px;right:6px;bottom:6px}header h1{font-size:1.3rem;letter-spacing:0.1em}.logo{width:56px;height:56px}main{padding:var(--spacing-md);gap:var(--spacing-sm)}main>p{font-size:0.85rem}#manualInput,.select2-container--default .select2-selection--single,#radicalSelect:not(.select2-hidden-accessible){height:44px}.select2-container--default .select2-selection--single .select2-selection__rendered{line-height:40px;font-size:0.95rem}.result{min-height:90px;font-size:3rem}.buttons{gap:var(--spacing-xs)}button{height:44px;font-size:0.9rem}.buttons{grid-template-columns:1fr 1fr}button,#manualInput,.select2-container--default .select2-selection--single{-webkit-tap-highlight-color:transparent}.alert-box{padding:var(--spacing-md);margin:var(--spacing-sm)}#alertMessage{font-size:0.95rem}footer{padding:var(--spacing-sm);font-size:0.8rem}}@media screen and (max-width:360px){.buttons{grid-template-columns:1fr}#exampleBtn{grid-column:1}header h1{font-size:1.2rem}.result{font-size:2.5rem}}@media (prefers-color-scheme:dark){}@media print{body{background:white}.buttons,footer,.alert-overlay,.image-preview-overlay{display:none !important}.container{max-width:100%;padding:0}main{box-shadow:none;border:1px solid #ccc}.result{font-size:5rem;min-height:150px}}button:focus-visible,#manualInput:focus-visible,.select2-container--default.select2-container--focus .select2-selection--single{outline:2px solid var(--indigo-blue);outline-offset:2px}@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:0.01ms !important;animation-iteration-count:1 !important;transition-duration:0.01ms !important}}