/* ClashTool - Global Styles */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:#0f172a;color:#e2e8f0;line-height:1.7;font-size:16px}
a{color:#38bdf8;text-decoration:none;transition:color .2s}
a:hover{color:#7dd3fc}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* Header / Nav */
.site-header{position:sticky;top:0;z-index:100;background:rgba(15,23,42,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(6,182,212,.1)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px;max-width:1200px;margin:0 auto;padding:0 24px}
.logo{font-size:1.25rem;font-weight:700;color:#f1f5f9;letter-spacing:-.5px}
.logo span{color:#06b6d4}
.nav-links{display:flex;gap:24px;align-items:center}
.nav-links a{color:#94a3b8;font-size:.88rem;font-weight:500;transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:#f1f5f9}
.mobile-toggle{display:none;background:none;border:none;color:#e2e8f0;font-size:1.5rem;cursor:pointer}

/* Hero */
.hero{padding:90px 0 70px;text-align:center;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(ellipse at 50% 0%,rgba(6,182,212,.08) 0%,transparent 60%);pointer-events:none}
.hero h1{font-size:clamp(2rem,5vw,3rem);font-weight:800;line-height:1.25;margin-bottom:20px;background:linear-gradient(135deg,#f1f5f9 0%,#06b6d4 50%,#22d3ee 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{font-size:1.1rem;color:#94a3b8;max-width:680px;margin:0 auto 36px;line-height:1.8}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:10px;font-size:.95rem;font-weight:600;transition:all .25s ease;cursor:pointer;border:none;text-decoration:none}
.btn-primary{background:linear-gradient(135deg,#0891b2,#22d3ee);color:#0f172a;box-shadow:0 4px 20px rgba(6,182,212,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(6,182,212,.45);color:#0f172a}
.btn-outline{background:transparent;border:1.5px solid rgba(6,182,212,.4);color:#06b6d4}
.btn-outline:hover{background:rgba(6,182,212,.1);border-color:#06b6d4;transform:translateY(-2px);color:#06b6d4}
.btn-sm{padding:8px 18px;font-size:.85rem}
.btn-block{width:100%;justify-content:center}

/* Sections */
section{padding:70px 0}
.section-badge{display:inline-block;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:1.5px;color:#22d3ee;background:rgba(34,211,238,.1);padding:4px 14px;border-radius:20px;margin-bottom:16px}
.section-title{font-size:clamp(1.5rem,3.5vw,2.2rem);font-weight:700;margin-bottom:12px;color:#f1f5f9}
.section-desc{color:#94a3b8;max-width:640px;margin:0 auto 48px;font-size:1.05rem}
.text-center{text-align:center}

/* Cards */
.cards-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px}
.card{position:relative;background:#1e293b;border-radius:16px;padding:32px 28px;border:1px solid rgba(6,182,212,.08);transition:transform .25s,border-color .25s}
.card:hover{transform:translateY(-4px);border-color:rgba(6,182,212,.25)}
.card-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:20px;background:linear-gradient(135deg,rgba(8,145,178,.15),rgba(34,211,238,.1))}
.card h3{font-size:1.15rem;font-weight:600;margin-bottom:10px;color:#f1f5f9}
.card p{color:#94a3b8;font-size:.92rem;line-height:1.7;margin-bottom:14px}
.card .learn-more{font-size:.85rem;color:#06b6d4;font-weight:500}
.card .learn-more:hover{color:#22d3ee}

/* Platform cards */
.platforms-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}
.platform-card{background:#1e293b;border-radius:16px;padding:28px 24px;text-align:center;border:1px solid rgba(6,182,212,.06);transition:transform .25s,border-color .25s}
.platform-card:hover{transform:translateY(-3px);border-color:rgba(6,182,212,.2)}
.platform-icon{font-size:2.4rem;margin-bottom:14px;color:#06b6d4}
.platform-card h3{font-size:1.05rem;font-weight:600;color:#f1f5f9;margin-bottom:6px}
.platform-card .rec{font-size:.8rem;color:#22d3ee;margin-bottom:16px;display:block}

/* Steps */
.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px;counter-reset:step}
.step-card{position:relative;background:#1e293b;border-radius:16px;padding:32px 24px 28px;border:1px solid rgba(6,182,212,.06)}
.step-num{counter-increment:step;font-size:2.8rem;font-weight:800;background:linear-gradient(135deg,#0891b2,#22d3ee);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1;margin-bottom:14px;display:block}
.step-card h3{font-size:1.05rem;font-weight:600;color:#f1f5f9;margin-bottom:8px}
.step-card p{color:#94a3b8;font-size:.9rem;line-height:1.7;margin-bottom:12px}
.step-card a{font-size:.85rem;color:#06b6d4;font-weight:500}

/* FAQ */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid rgba(6,182,212,.08);border-radius:12px;margin-bottom:12px;overflow:hidden;background:#1e293b;transition:border-color .2s}
.faq-item:hover{border-color:rgba(6,182,212,.2)}
.faq-q{padding:18px 24px;cursor:pointer;display:flex;align-items:center;justify-content:space-between;font-weight:600;color:#f1f5f9;font-size:.95rem;user-select:none}
.faq-q::after{content:'+';font-size:1.3rem;color:#06b6d4;transition:transform .3s;flex-shrink:0;margin-left:16px}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease,padding .35s ease;padding:0 24px;color:#94a3b8;font-size:.9rem;line-height:1.8}
.faq-item.open .faq-a{max-height:500px;padding:0 24px 20px}

/* Blog cards */
.blog-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px}
.blog-card{background:#1e293b;border-radius:16px;padding:28px 24px;border:1px solid rgba(6,182,212,.06);transition:transform .25s,border-color .25s}
.blog-card:hover{transform:translateY(-3px);border-color:rgba(6,182,212,.2)}
.blog-tag{font-size:.75rem;color:#22d3ee;font-weight:600;text-transform:uppercase;letter-spacing:1px;margin-bottom:10px;display:block}
.blog-card h3{font-size:1.05rem;font-weight:600;color:#f1f5f9;margin-bottom:8px;line-height:1.4}
.blog-card p{color:#94a3b8;font-size:.88rem;line-height:1.7;margin-bottom:14px}
.blog-card .read-more{font-size:.85rem;color:#06b6d4;font-weight:500;text-decoration:none;display:inline-block;transition:color .2s}
.blog-card .read-more:hover{color:#22d3ee}
.blog-card .blog-status{font-size:.7rem;background:rgba(234,179,8,.12);color:#eab308;padding:2px 8px;border-radius:4px;margin-left:8px;font-weight:500}

/* Footer */
.site-footer{background:#0c1222;border-top:1px solid rgba(6,182,212,.06);padding:60px 0 30px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand p{color:#64748b;font-size:.88rem;line-height:1.7;margin-top:12px}
.footer-col h4{color:#f1f5f9;font-size:.9rem;font-weight:600;margin-bottom:16px}
.footer-col a{display:block;color:#64748b;font-size:.85rem;margin-bottom:10px;transition:color .2s}
.footer-col a:hover{color:#06b6d4}
.footer-bottom{border-top:1px solid rgba(255,255,255,.05);padding-top:24px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}
.footer-bottom p{color:#475569;font-size:.82rem}
.footer-bottom a{color:#475569;font-size:.82rem;margin-left:20px}

/* CTA Section */
.cta-section{background:linear-gradient(135deg,rgba(8,145,178,.12),rgba(34,211,238,.06));border:1px solid rgba(6,182,212,.15);border-radius:20px;padding:48px 40px;text-align:center;margin:40px 0}
.cta-section h2{font-size:1.6rem;font-weight:700;color:#f1f5f9;margin-bottom:12px}
.cta-section p{color:#94a3b8;margin-bottom:24px;font-size:1rem}
.cta-section .btn{margin:0 8px}

/* Tool Pages - Forms */
.tool-container{max-width:1000px;margin:0 auto;padding:60px 24px}
.tool-header{text-align:center;margin-bottom:40px}
.tool-header h1{font-size:clamp(1.5rem,4vw,2.4rem);font-weight:800;margin-bottom:12px;background:linear-gradient(135deg,#f1f5f9,#06b6d4);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.tool-header p{color:#94a3b8;font-size:1rem;max-width:600px;margin:0 auto}

.form-group{margin-bottom:24px}
.form-group label{display:block;font-size:.9rem;font-weight:600;color:#e2e8f0;margin-bottom:8px}
.form-group .hint{font-size:.8rem;color:#64748b;margin-top:4px}

.form-input,.form-textarea,.form-select{width:100%;background:#0f172a;border:1px solid rgba(6,182,212,.2);border-radius:10px;padding:12px 16px;color:#e2e8f0;font-size:.92rem;font-family:inherit;transition:border-color .2s}
.form-input:focus,.form-textarea:focus,.form-select:focus{outline:none;border-color:#06b6d4;box-shadow:0 0 0 3px rgba(6,182,212,.1)}
.form-textarea{min-height:140px;resize:vertical;font-family:"Cascadia Code","Fira Code","JetBrains Mono",monospace;font-size:.85rem;line-height:1.6}
.form-select{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='%2306b6d4' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;cursor:pointer}
.form-select option{background:#1e293b;color:#e2e8f0}

/* Checkbox / Radio groups */
.check-group{display:flex;flex-wrap:wrap;gap:12px}
.check-item{display:flex;align-items:center;gap:8px;cursor:pointer}
.check-item input[type="checkbox"],
.check-item input[type="radio"]{accent-color:#06b6d4;width:16px;height:16px}
.check-item label{font-size:.88rem;color:#cbd5e1;cursor:pointer}

/* Code Editor */
.editor-wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px;min-height:500px}
.editor-pane{position:relative;background:#0f172a;border:1px solid rgba(6,182,212,.15);border-radius:12px;overflow:hidden}
.editor-pane-header{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;background:rgba(6,182,212,.06);border-bottom:1px solid rgba(6,182,212,.1)}
.editor-pane-header span{font-size:.8rem;color:#94a3b8;font-weight:600}
.editor-pane-header .actions{display:flex;gap:8px}
.editor-pane-header .actions button{background:rgba(6,182,212,.12);border:1px solid rgba(6,182,212,.2);color:#06b6d4;padding:4px 12px;border-radius:6px;font-size:.78rem;cursor:pointer;transition:background .2s}
.editor-pane-header .actions button:hover{background:rgba(6,182,212,.2)}
.code-area{width:100%;height:calc(100% - 42px);min-height:450px;background:transparent;border:none;color:#e2e8f0;padding:16px;font-family:"Cascadia Code","Fira Code","JetBrains Mono",monospace;font-size:.85rem;line-height:1.7;resize:none;tab-size:2}
.code-area:focus{outline:none}
.validation-panel{padding:16px;overflow-y:auto;max-height:calc(100% - 42px)}
.validation-item{display:flex;align-items:flex-start;gap:10px;padding:8px 0;border-bottom:1px solid rgba(255,255,255,.04);font-size:.85rem}
.validation-ok{color:#22d3ee}
.validation-error{color:#f87171}
.validation-warn{color:#facc15}

/* Output / Preview */
.output-area{background:#0f172a;border:1px solid rgba(6,182,212,.15);border-radius:12px;overflow:hidden;margin-top:24px}
.output-header{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;background:rgba(6,182,212,.06);border-bottom:1px solid rgba(6,182,212,.1)}
.output-header span{font-size:.8rem;color:#94a3b8;font-weight:600}
.output-code{padding:16px;font-family:"Cascadia Code","Fira Code","JetBrains Mono",monospace;font-size:.83rem;line-height:1.7;color:#cbd5e1;white-space:pre-wrap;word-break:break-all;max-height:400px;overflow-y:auto}

/* Breadcrumb */
.breadcrumb{padding:16px 0;font-size:.85rem;color:#64748b}
.breadcrumb a{color:#94a3b8}
.breadcrumb a:hover{color:#06b6d4}
.breadcrumb span{margin:0 8px}

/* 404 page */
.error-page{display:flex;align-items:center;justify-content:center;min-height:70vh;text-align:center}
.error-page h1{font-size:6rem;font-weight:800;background:linear-gradient(135deg,#0891b2,#22d3ee);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1}
.error-page p{color:#94a3b8;margin:16px 0 32px;font-size:1.1rem}

/* Responsive */
@media(max-width:900px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .editor-wrap{grid-template-columns:1fr}
}
@media(max-width:768px){
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:#1e293b;flex-direction:column;padding:20px 24px;gap:16px;border-bottom:1px solid rgba(6,182,212,.1)}
  .nav-links.open{display:flex}
  .mobile-toggle{display:block}
  .hero{padding:50px 0 40px}
  .hero h1{font-size:1.8rem}
  .cards-grid,.platforms-grid,.steps-grid,.blog-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;text-align:center}
  section{padding:50px 0}
  .cta-section{padding:32px 20px}
  .tool-container{padding:40px 16px}
}

/* Mobile CTA bar */
.mobile-cta-bar{display:none;position:fixed;bottom:0;left:0;right:0;background:rgba(15,23,42,.95);backdrop-filter:blur(12px);border-top:1px solid rgba(6,182,212,.15);padding:12px 20px;z-index:99;text-align:center}
.mobile-cta-bar .btn{width:100%;justify-content:center}
@media(max-width:768px){
  .mobile-cta-bar{display:block}
  body{padding-bottom:64px}
}

/* Table */
.table-wrap{overflow-x:auto;border-radius:16px;border:1px solid rgba(6,182,212,.1);background:#1e293b}
.compare-table{width:100%;border-collapse:collapse;min-width:700px}
.compare-table th,.compare-table td{padding:14px 18px;text-align:left;font-size:.9rem}
.compare-table thead{background:rgba(8,145,178,.08)}
.compare-table th{color:#06b6d4;font-weight:600;font-size:.85rem;text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid rgba(6,182,212,.15)}
.compare-table td{color:#cbd5e1;border-bottom:1px solid rgba(255,255,255,.04)}
.compare-table tbody tr:hover{background:rgba(6,182,212,.03)}