/* ============================================
   冰梭 - 主样式表
   专业商业级UI设计 - 科技感深色Hero+粒子动效
   ============================================ */

:root {
    --color-primary: #3B82F6;
    --color-primary-light: #60A5FA;
    --color-primary-dark: #2563EB;
    --color-primary-bg: #EFF6FF;
    --color-accent: #7C3AED;
    --color-success: #10B981;
    --color-success-bg: #ECFDF5;
    --color-danger: #EF4444;
    --color-danger-bg: #FEF2F2;
    --color-warning: #F59E0B;
    --color-warning-bg: #FFFBEB;
    --color-text: #1E293B;
    --color-text-secondary: #64748B;
    --color-text-muted: #94A3B8;
    --color-border: #E2E8F0;
    --color-bg: #F1F5F9;
    --color-bg-white: #FFFFFF;
    --color-bg-card: #FFFFFF;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1),0 2px 4px -2px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1),0 4px 6px -4px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1),0 8px 10px -6px rgba(0,0,0,0.1);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition: all 0.3s ease;
    --font-sans: 'Segoe UI','Microsoft YaHei','PingFang SC',sans-serif;
    --max-width: 1100px;
}

*,*::before,*::after { box-sizing:border-box; margin:0; padding:0; }
html { font-size:16px; scroll-behavior:smooth; -webkit-font-smoothing:antialiased; }
body { font-family:var(--font-sans); color:var(--color-text); background:var(--color-bg); line-height:1.7; min-height:100vh; display:flex; flex-direction:column; overflow-x:hidden; }
a { color:var(--color-primary); text-decoration:none; transition:color 0.2s; }
a:hover { color:var(--color-primary-dark); }

/* ========== 导航栏 ========== */
.navbar {
    position:fixed; top:0; width:100%; z-index:1000;
    background:rgba(255,255,255,0.96); backdrop-filter:blur(16px);
    border-bottom:1px solid var(--color-border);
    transition:all 0.3s;
}
.navbar.scrolled { background:rgba(255,255,255,0.99); box-shadow:0 1px 12px rgba(0,0,0,0.06); }
.navbar-inner {
    max-width:var(--max-width); margin:0 auto; padding:0 1.5rem;
    height:60px; display:flex; align-items:center; justify-content:space-between;
}
.navbar-brand { display:flex; align-items:center; gap:0.5rem; font-size:1.2rem; font-weight:700; color:var(--color-text); text-decoration:none; flex-shrink:0; }
.brand-logo { width:32px; height:32px; border-radius:6px; transition:transform 0.3s; }
.navbar-brand:hover .brand-logo { transform:scale(1.05); }
.brand-text { background:linear-gradient(135deg,var(--color-primary),var(--color-accent)); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.navbar-nav { display:flex; gap:0.25rem; }
.nav-link { color:var(--color-text-secondary); font-weight:500; padding:0.4rem 0.8rem; border-radius:6px; font-size:0.9rem; transition:all 0.2s; }
.nav-link:hover { background:var(--color-primary-bg); color:var(--color-primary); }
.nav-link.active { background:var(--color-primary); color:#fff; }
.navbar-actions { display:flex; align-items:center; gap:12px; flex-shrink:0; }
.user-area { position:relative; }
.user-actions { display:flex; align-items:center; gap:8px; cursor:pointer; padding:4px 12px; border-radius:var(--radius-md); transition:var(--transition); }
.user-actions:hover { background:var(--color-primary-bg); }
.user-avatar { width:32px; height:32px; border-radius:50%; background:linear-gradient(135deg,var(--color-primary),var(--color-accent)); display:flex; align-items:center; justify-content:center; color:#fff; font-size:14px; font-weight:600; }
.user-name { font-size:14px; color:var(--color-text); max-width:100px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.user-dropdown { position:absolute; top:100%; right:0; margin-top:8px; background:var(--color-bg-white); border:1px solid var(--color-border); border-radius:var(--radius-md); box-shadow:var(--shadow-lg); min-width:180px; padding:8px; display:none; }
.user-actions:hover .user-dropdown { display:block; }
.dropdown-item { display:flex; align-items:center; gap:8px; padding:8px 12px; border-radius:var(--radius-sm); font-size:14px; color:var(--color-text); cursor:pointer; transition:var(--transition); }
.dropdown-item:hover { background:var(--color-primary-bg); color:var(--color-primary); }
.badge { display:inline-flex; align-items:center; padding:2px 8px; border-radius:999px; font-size:12px; font-weight:600; }
.badge-member { background:linear-gradient(135deg,#FBBF24,#F59E0B); color:#78350F; }

/* ========== 按钮 ========== */
.btn { display:inline-flex; align-items:center; justify-content:center; gap:6px; padding:10px 20px; border:none; border-radius:8px; font-size:14px; font-weight:600; cursor:pointer; transition:all 0.3s; white-space:nowrap; font-family:var(--font-sans); position:relative; overflow:hidden; }
.btn::before { content:''; position:absolute; top:50%; left:50%; width:0; height:0; border-radius:50%; background:rgba(255,255,255,0.2); transform:translate(-50%,-50%); transition:width 0.6s,height 0.6s; }
.btn:hover::before { width:300px; height:300px; }
.btn-primary { background:linear-gradient(135deg,var(--color-primary),var(--color-primary-dark)); color:#fff; box-shadow:0 4px 12px rgba(59,130,246,0.3); }
.btn-primary:hover { transform:translateY(-2px); box-shadow:0 6px 20px rgba(59,130,246,0.4); }
.btn-ghost { background:transparent; color:var(--color-text-secondary); }
.btn-ghost:hover { background:var(--color-primary-bg); color:var(--color-primary); }
.btn-danger { background:var(--color-danger); color:#fff; }
.btn-danger:hover { background:#DC2626; }
.btn-sm { padding:6px 14px; font-size:13px; }
.btn-lg { padding:14px 32px; font-size:16px; }

/* ========== 主内容 ========== */
.main-content { flex:1; width:100%; }
.view { padding:0 0 40px; }

/* ========== Hero - 科技感核心操作区 ========== */
.hero {
    width:100%; min-height:100vh;
    display:flex; align-items:center; justify-content:center;
    text-align:center; color:#fff;
    position:relative; overflow:hidden;
    background:linear-gradient(170deg,#0a0e27 0%,#0d1b3e 30%,#0f2847 50%,#0a1628 80%,#060a1a 100%);
    padding:5rem 2rem 3rem;
}
.hero-particles { position:absolute; top:0; left:0; width:100%; height:100%; pointer-events:none; overflow:hidden; }
.particle { position:absolute; width:3px; height:3px; background:rgba(96,165,250,0.5); border-radius:50%; box-shadow:0 0 8px rgba(96,165,250,0.6),0 0 16px rgba(96,165,250,0.3); animation:particleFloat 10s infinite; }
.particle:nth-child(1){top:15%;left:8%;animation-delay:0s}
.particle:nth-child(2){top:55%;left:18%;animation-delay:1.2s}
.particle:nth-child(3){top:25%;left:72%;animation-delay:2.4s}
.particle:nth-child(4){top:75%;left:82%;animation-delay:3.6s}
.particle:nth-child(5){top:35%;left:92%;animation-delay:4.8s}
.particle:nth-child(6){top:85%;left:38%;animation-delay:6s}
.particle:nth-child(7){top:8%;left:55%;animation-delay:7.2s}
.particle:nth-child(8){top:45%;left:28%;animation-delay:8.4s}
@keyframes particleFloat {
    0%,100%{transform:translate(0,0) scale(1);opacity:0.2}
    25%{transform:translate(30px,-40px) scale(1.5);opacity:0.7}
    50%{transform:translate(-15px,-80px) scale(0.6);opacity:0.4}
    75%{transform:translate(40px,-40px) scale(1.2);opacity:0.6}
}
.speed-lines { position:absolute; top:0; left:0; width:100%; height:100%; pointer-events:none; overflow:hidden; }
.speed-line { position:absolute; height:1px; background:linear-gradient(90deg,transparent 0%,rgba(96,165,250,0.5) 50%,transparent 100%); box-shadow:0 0 8px rgba(96,165,250,0.2); animation:speedLine 4s infinite; }
.speed-line:nth-child(1){top:18%;width:120px;animation-delay:0s}
.speed-line:nth-child(2){top:38%;width:180px;animation-delay:0.8s}
.speed-line:nth-child(3){top:58%;width:100px;animation-delay:1.6s}
.speed-line:nth-child(4){top:78%;width:140px;animation-delay:2.4s}
.speed-line:nth-child(5){top:48%;width:160px;animation-delay:3.2s}
@keyframes speedLine { 0%{left:-200px;opacity:0} 10%{opacity:0.8} 90%{opacity:0.8} 100%{left:100%;opacity:0} }

/* 网格线 - 科技感 */
.hero-grid-lines { position:absolute; top:0; left:0; width:100%; height:100%; pointer-events:none; overflow:hidden; }
.grid-line { position:absolute; width:100%; height:1px; background:linear-gradient(90deg,transparent,rgba(96,165,250,0.05),transparent); }
.grid-line:nth-child(1){top:12%} .grid-line:nth-child(2){top:25%} .grid-line:nth-child(3){top:37%}
.grid-line:nth-child(4){top:50%} .grid-line:nth-child(5){top:62%} .grid-line:nth-child(6){top:75%}
.grid-line:nth-child(7){top:87%} .grid-line:nth-child(8){top:100%}

/* Hero 大气渐变光晕 */
.hero::before {
    content:''; position:absolute; top:-20%; left:50%; transform:translateX(-50%);
    width:100%; height:70%;
    background:radial-gradient(ellipse at center,rgba(59,130,246,0.15) 0%,rgba(99,102,241,0.08) 30%,transparent 60%);
    pointer-events:none;
}
.hero::after {
    content:''; position:absolute; bottom:0; left:0; width:100%; height:180px;
    background:linear-gradient(to top,var(--color-bg),transparent);
    pointer-events:none; z-index:1;
}

.hero-content { position:relative; z-index:2; max-width:680px; margin:0 auto; width:100%; }
.hero-badge { display:inline-block; padding:6px 20px; border:1px solid rgba(96,165,250,0.25); border-radius:999px; font-size:13px; color:rgba(147,197,253,0.95); margin-bottom:1.5rem; background:rgba(59,130,246,0.08); letter-spacing:0.5px; backdrop-filter:blur(4px); }
.hero-title { font-size:3.2rem; font-weight:800; margin-bottom:0.75rem; color:#fff; letter-spacing:-0.5px; line-height:1.2; }
.title-accent { background:linear-gradient(135deg,#60A5FA,#C084FC,#818CF8); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.hero-subtitle { font-size:1.2rem; color:rgba(148,163,184,0.9); margin-bottom:2.5rem; font-weight:400; letter-spacing:3px; }

/* Hero内上传区域 */
.hero .upload-zone {
    border:1.5px dashed rgba(96,165,250,0.3); border-radius:var(--radius-xl);
    padding:44px 36px; text-align:center; cursor:pointer; transition:all 0.3s;
    background:rgba(10,14,39,0.6); backdrop-filter:blur(12px);
    margin-bottom:2rem; position:relative;
}
.hero .upload-zone::before {
    content:''; position:absolute; inset:-1px; border-radius:var(--radius-xl);
    background:linear-gradient(135deg,rgba(59,130,246,0.15),transparent,rgba(99,102,241,0.15));
    z-index:-1; opacity:0; transition:opacity 0.3s;
}
.hero .upload-zone:hover::before,.hero .upload-zone.dragover::before { opacity:1; }
.hero .upload-zone:hover,.hero .upload-zone.dragover { border-color:rgba(96,165,250,0.6); background:rgba(10,14,39,0.8); }
.hero .upload-zone.dragover { transform:scale(1.01); box-shadow:0 0 0 3px rgba(59,130,246,0.15),0 0 60px rgba(59,130,246,0.1); }
.hero .upload-icon { color:rgba(147,197,253,0.8); margin-bottom:14px; }
.hero .upload-text { font-size:15px; color:rgba(203,213,225,0.8); margin-bottom:6px; }
.hero .upload-link { color:#93C5FD; font-weight:600; text-decoration:underline; text-underline-offset:2px; }
.hero .upload-hint { font-size:12px; color:rgba(148,163,184,0.5); }
.hero .file-input { display:none; }

/* Hero三步引导 */
.hero-steps { display:flex; align-items:center; justify-content:center; gap:16px; flex-wrap:wrap; }
.hero-step { display:flex; align-items:center; gap:8px; color:rgba(203,213,225,0.6); font-size:14px; }
.hero-step-num { width:30px; height:30px; border-radius:50%; border:1.5px solid rgba(96,165,250,0.35); color:#93C5FD; display:flex; align-items:center; justify-content:center; font-weight:700; font-size:13px; background:rgba(59,130,246,0.08); }
.hero-step-arrow { color:rgba(96,165,250,0.25); }

.hero-glow { position:absolute; top:0; left:0; width:100%; height:100%; pointer-events:none; background:radial-gradient(600px circle at var(--mouse-x,50%) var(--mouse-y,50%),rgba(59,130,246,0.1),transparent 40%); }

/* ========== 独立上传区域（非Hero内） ========== */
.upload-section { max-width:640px; margin:-2rem auto 3rem; position:relative; z-index:2; }
.upload-section .upload-zone {
    border:2px dashed var(--color-border); border-radius:var(--radius-xl);
    padding:50px 40px; text-align:center; cursor:pointer; transition:all 0.3s;
    background:var(--color-bg-white); box-shadow:var(--shadow-lg);
}
.upload-section .upload-zone:hover,.upload-section .upload-zone.dragover { border-color:var(--color-primary); background:var(--color-primary-bg); }
.upload-section .upload-zone.dragover { transform:scale(1.02); box-shadow:0 0 0 4px rgba(59,130,246,0.2),var(--shadow-xl); }

/* ========== Section标题 ========== */
.section-title { text-align:center; font-size:1.75rem; color:#0F172A; margin-bottom:2rem; font-weight:600; max-width:var(--max-width); margin-left:auto; margin-right:auto; padding:0 1.5rem; }

/* ========== 功能特性 ========== */
.features-section { margin-bottom:4rem; padding:3rem 0; background:linear-gradient(180deg,#E2E8F0 0%,var(--color-bg) 100%); position:relative; }
.features-section::after { content:''; position:absolute; bottom:0; left:0; right:0; height:2px; background:linear-gradient(90deg,transparent 0%,var(--color-primary) 20%,var(--color-primary-light) 50%,var(--color-primary) 80%,transparent 100%); }
.features-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:1.25rem; max-width:var(--max-width); margin:0 auto; padding:0 1.5rem; }
.feature-card { background:var(--color-bg-white); border:1px solid var(--color-border); border-radius:12px; padding:1.5rem; transition:all 0.3s; position:relative; overflow:hidden; }
.feature-card::before { content:''; position:absolute; top:0; left:-100%; width:100%; height:100%; background:linear-gradient(90deg,transparent,rgba(59,130,246,0.05),transparent); transition:left 0.5s; }
.feature-card:hover::before { left:100%; }
.feature-card:hover { border-color:var(--color-primary); box-shadow:0 8px 24px rgba(59,130,246,0.15); transform:translateY(-5px); }
.feature-icon { width:48px; height:48px; background:var(--color-primary-bg); border-radius:10px; display:flex; align-items:center; justify-content:center; color:var(--color-primary); margin-bottom:1rem; transition:all 0.3s; }
.feature-card:hover .feature-icon { background:var(--color-primary); color:#fff; transform:rotate(360deg); box-shadow:0 4px 12px rgba(59,130,246,0.3); }
.feature-title { font-size:1.15rem; color:#0F172A; margin-bottom:0.5rem; font-weight:600; }
.feature-desc { color:var(--color-text-secondary); line-height:1.7; font-size:0.95rem; }

/* ========== 传输容器 ========== */
.transfer-container { max-width:600px; margin:0 auto; padding:5rem 1.5rem 0; }
.transfer-header { display:flex; align-items:center; justify-content:space-between; margin-bottom:32px; }
.transfer-header h2 { font-size:24px; font-weight:700; }
.file-info-card { display:flex; align-items:center; gap:16px; background:var(--color-bg-card); border:1px solid var(--color-border); border-radius:var(--radius-lg); padding:20px 24px; margin-bottom:24px; }
.file-icon { color:var(--color-primary); flex-shrink:0; }
.file-name { font-size:16px; font-weight:600; word-break:break-all; }
.file-size { font-size:14px; color:var(--color-text-secondary); margin-top:4px; }
.link-section { margin-bottom:24px; }
.link-label { font-size:14px; font-weight:600; color:var(--color-text-secondary); margin-bottom:8px; }
.link-box { display:flex; gap:8px; }
.link-input { flex:1; padding:10px 16px; border:1px solid var(--color-border); border-radius:var(--radius-md); font-size:14px; background:var(--color-bg); color:var(--color-text); font-family:monospace; }
.qrcode-box { text-align:center; margin-top:20px; }
.qrcode-box canvas { border:1px solid var(--color-border); border-radius:var(--radius-md); }
.qrcode-hint { font-size:13px; color:var(--color-text-muted); margin-top:8px; }

/* 传输状态 */
.transfer-status { display:flex; align-items:center; gap:10px; padding:16px 20px; background:var(--color-primary-bg); border-radius:var(--radius-md); margin-bottom:24px; font-size:14px; color:var(--color-primary-dark); }
.status-indicator { width:10px; height:10px; border-radius:50%; flex-shrink:0; }
.status-waiting { background:var(--color-warning); animation:pulse 2s infinite; }
.status-connecting { background:var(--color-primary); animation:pulse 1.5s infinite; }
.status-transferring { background:var(--color-success); animation:pulse 1s infinite; }
.status-complete { background:var(--color-success); }
.status-error { background:var(--color-danger); }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.4} }

/* 进度条 */
.progress-section { margin-bottom:24px; }
.progress-bar { height:8px; background:var(--color-border); border-radius:999px; overflow:hidden; margin-bottom:12px; }
.progress-fill { height:100%; background:linear-gradient(90deg,var(--color-primary),var(--color-accent)); border-radius:999px; transition:width 0.3s ease; width:0%; }
.progress-info { display:flex; justify-content:space-between; align-items:center; margin-bottom:4px; }
.progress-percent { font-size:18px; font-weight:700; color:var(--color-text); }
.progress-detail { font-size:13px; color:var(--color-text-secondary); }
.progress-speed { font-size:13px; color:var(--color-text-muted); text-align:right; }
.transfer-actions { text-align:center; margin-top:16px; }
.receive-actions { text-align:center; margin:32px 0; }
.transfer-complete { text-align:center; padding:40px 0; }
.complete-icon { color:var(--color-success); margin-bottom:16px; }
.transfer-complete h3 { font-size:20px; font-weight:700; margin-bottom:8px; }
.transfer-complete p { color:var(--color-text-secondary); }

/* ========== 超限 ========== */
.exceeded-icon { text-align:center; color:var(--color-warning); margin-bottom:16px; }
.exceeded-title { text-align:center; font-size:22px; font-weight:700; margin-bottom:12px; }
.exceeded-info { text-align:center; color:var(--color-text-secondary); margin-bottom:32px; line-height:1.8; }
.exceeded-options { display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-bottom:24px; }
.option-card { background:var(--color-bg-card); border:1px solid var(--color-border); border-radius:var(--radius-lg); padding:24px; text-align:center; position:relative; transition:var(--transition); }
.option-card:hover { box-shadow:var(--shadow-md); }
.option-featured { border-color:var(--color-primary); box-shadow:0 0 0 1px var(--color-primary); }
.option-badge { position:absolute; top:-10px; left:50%; transform:translateX(-50%); background:linear-gradient(135deg,var(--color-primary),var(--color-accent)); color:#fff; padding:2px 12px; border-radius:999px; font-size:11px; font-weight:700; }
.option-name { font-size:16px; font-weight:700; margin-bottom:8px; }
.option-price { font-size:28px; font-weight:800; color:var(--color-text); margin-bottom:8px; }
.option-period { font-size:13px; font-weight:400; color:var(--color-text-secondary); }
.option-desc { font-size:13px; color:var(--color-text-secondary); margin-bottom:16px; }

/* ========== 传输记录 ========== */
.history-list { display:flex; flex-direction:column; gap:12px; }
.history-empty { text-align:center; padding:60px 0; color:var(--color-text-muted); }
.history-item { display:flex; align-items:center; gap:16px; background:var(--color-bg-card); border:1px solid var(--color-border); border-radius:var(--radius-md); padding:16px 20px; transition:var(--transition); }
.history-item:hover { border-color:var(--color-primary); }
.history-item .file-icon { color:var(--color-primary); }
.history-item-info { flex:1; }
.history-item-name { font-size:14px; font-weight:600; }
.history-item-meta { font-size:12px; color:var(--color-text-muted); margin-top:4px; }
.history-item-status { font-size:12px; font-weight:600; padding:4px 10px; border-radius:999px; }
.status-completed { background:var(--color-success-bg); color:var(--color-success); }
.status-cancelled { background:var(--color-danger-bg); color:var(--color-danger); }
.status-transferring { background:var(--color-primary-bg); color:var(--color-primary); }

/* ========== 页脚 ========== */
.footer { background:#1E293B; color:#E2E8F0; padding:2.5rem 1.5rem 0; margin-top:auto; }
.footer-inner { max-width:var(--max-width); margin:0 auto; }
.footer-sections { display:grid; grid-template-columns:repeat(auto-fit,minmax(200px,1fr)); gap:2rem; }
.footer-section h4 { color:#F1F5F9; font-size:1rem; margin-bottom:1rem; font-weight:600; }
.footer-section ul { list-style:none; }
.footer-section ul li { margin-bottom:0.5rem; }
.footer-section ul li a { color:#94A3B8; transition:color 0.2s; font-size:0.9rem; }
.footer-section ul li a:hover { color:#60A5FA; }
.footer-section p { color:#94A3B8; line-height:1.6; font-size:0.9rem; }
.footer-bottom { text-align:center; padding-top:2rem; margin-top:2rem; border-top:1px solid #334155; color:#64748B; font-size:0.85rem; padding-bottom:1.5rem; }

/* ========== 登录弹窗 ========== */
.modal-overlay { position:fixed; top:0; left:0; width:100%; height:100%; background:rgba(0,0,0,0.5); backdrop-filter:blur(4px); z-index:2000; display:flex; align-items:center; justify-content:center; animation:fadeIn 0.2s ease; }
.modal { background:var(--color-bg-white); border-radius:var(--radius-lg); width:90%; max-width:420px; box-shadow:var(--shadow-xl); animation:modalIn 0.3s ease; }
.modal-header { display:flex; align-items:center; justify-content:space-between; padding:20px 24px; border-bottom:1px solid var(--color-border); }
.modal-header h3 { font-size:18px; font-weight:700; }
.modal-close { width:32px; height:32px; border:none; background:none; font-size:20px; color:var(--color-text-muted); cursor:pointer; border-radius:6px; transition:var(--transition); }
.modal-close:hover { background:var(--color-bg); color:var(--color-text); }
.modal-body { padding:24px; }
.modal-desc { color:var(--color-text-secondary); font-size:14px; margin-bottom:24px; text-align:center; }
.login-options { display:flex; flex-direction:column; gap:12px; }
.login-btn { display:flex; align-items:center; justify-content:center; gap:10px; padding:14px 20px; border:1px solid var(--color-border); border-radius:var(--radius-md); font-size:15px; font-weight:600; cursor:pointer; transition:all 0.3s; font-family:var(--font-sans); background:var(--color-bg-white); }
.login-wechat { color:#07C160; }
.login-wechat:hover { background:#07C160; color:#fff; border-color:#07C160; box-shadow:0 4px 12px rgba(7,193,96,0.3); }
.login-wechat:hover svg path { fill:#fff; }
.login-alipay { color:#1677FF; }
.login-alipay:hover { background:#1677FF; color:#fff; border-color:#1677FF; box-shadow:0 4px 12px rgba(22,119,255,0.3); }
.login-alipay:hover svg path { fill:#fff; }
@keyframes fadeIn { from{opacity:0} to{opacity:1} }
@keyframes modalIn { from{opacity:0;transform:scale(0.95) translateY(10px)} to{opacity:1;transform:scale(1) translateY(0)} }

/* ========== Toast ========== */
.toast-container { position:fixed; top:80px; right:24px; z-index:3000; display:flex; flex-direction:column; gap:8px; }
.toast { padding:12px 20px; border-radius:var(--radius-md); font-size:14px; font-weight:500; box-shadow:var(--shadow-lg); animation:slideIn 0.3s ease; max-width:360px; }
.toast-success { background:var(--color-success); color:#fff; }
.toast-error { background:var(--color-danger); color:#fff; }
.toast-info { background:var(--color-primary); color:#fff; }
@keyframes slideIn { from{transform:translateX(100%);opacity:0} to{transform:translateX(0);opacity:1} }
@keyframes slideOut { from{transform:translateX(0);opacity:1} to{transform:translateX(100%);opacity:0} }

/* ========== 滚动显示动画 ========== */
.scroll-reveal { opacity:0; transform:translateY(20px); transition:all 0.5s ease; }
.scroll-reveal.revealed { opacity:1; transform:translateY(0); }

/* ========== 响应式 ========== */
@media(max-width:768px) {
    .navbar-inner { flex-wrap:wrap; height:auto; padding:0.6rem 1rem; gap:0; }
    .navbar-brand { order:1; }
    .navbar-actions { order:2; }
    .navbar-nav { order:3; width:100%; justify-content:center; flex-wrap:wrap; padding-top:0.5rem; border-top:1px solid var(--color-border); margin-top:0.5rem; }
    .hero { min-height:auto; padding:5rem 1rem 2rem; }
    .hero-title { font-size:2rem; }
    .hero-subtitle { font-size:1rem; letter-spacing:1px; }
    .hero .upload-zone { padding:28px 20px; }
    .hero-steps { gap:8px; }
    .hero-step span { font-size:12px; }
    .features-grid,.scenarios-grid,.testimonials-grid { grid-template-columns:1fr; }
    .exceeded-options { grid-template-columns:1fr; }
    .footer-sections { grid-template-columns:1fr; text-align:center; }
}
@media(max-width:480px) {
    .navbar-inner { padding:0.5rem 0.75rem; }
    .navbar-nav { gap:0; }
    .nav-link { padding:0.35rem 0.6rem; font-size:0.85rem; }
    .hero-title { font-size:1.6rem; }
    .hero-badge { font-size:11px; padding:4px 12px; }
    .hero-step-num { width:24px; height:24px; font-size:11px; }
    .hero-step-arrow svg { width:16px; height:16px; }
}

/* ========== 适用场景 ========== */
.scenarios-section { margin-bottom:3rem; padding:3rem 0; background:var(--color-bg-white); border-top:1px solid var(--color-border); }
.scenarios-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:1.25rem; max-width:var(--max-width); margin:0 auto; padding:0 1.5rem; }
.scenario-card { background:var(--color-bg); border:1px solid var(--color-border); border-radius:12px; padding:1.5rem; text-align:center; transition:all 0.3s; position:relative; overflow:hidden; }
.scenario-card::after { content:''; position:absolute; bottom:0; left:0; right:0; height:3px; background:linear-gradient(90deg,var(--color-primary),var(--color-primary-light),var(--color-primary)); transform:scaleX(0); transition:transform 0.3s; }
.scenario-card:hover::after { transform:scaleX(1); }
.scenario-card:hover { border-color:var(--color-primary); box-shadow:0 8px 24px rgba(59,130,246,0.15); transform:translateY(-5px); }
.scenario-icon { margin-bottom:1rem; color:var(--color-primary); transition:all 0.3s; }
.scenario-card:hover .scenario-icon { transform:scale(1.1) rotate(5deg); filter:drop-shadow(0 4px 8px rgba(59,130,246,0.3)); }
.scenario-card h3 { color:#0F172A; font-size:1.1rem; margin-bottom:0.5rem; font-weight:600; }
.scenario-card p { color:var(--color-text-secondary); font-size:0.9rem; line-height:1.6; }

/* ========== 用户评价 ========== */
.testimonials-section { margin-bottom:3rem; padding:3rem 0; background:var(--color-bg); }
.testimonials-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(300px,1fr)); gap:1.25rem; max-width:var(--max-width); margin:0 auto; padding:0 1.5rem; }
.testimonial-card { background:var(--color-bg-white); border:1px solid var(--color-border); border-radius:12px; padding:1.5rem; transition:all 0.2s; }
.testimonial-card:hover { box-shadow:0 4px 12px rgba(0,0,0,0.08); transform:translateY(-3px); }
.testimonial-quote { color:#334155; font-size:1rem; margin-bottom:1rem; line-height:1.7; }
.testimonial-author { color:var(--color-primary); font-weight:600; font-size:0.95rem; }
.testimonial-role { color:var(--color-text-muted); font-size:0.85rem; margin-top:0.25rem; }

/* ========== 支付弹窗 ========== */
.payment-modal { max-width:460px; }
.payment-order-info { text-align:center; margin-bottom:24px; padding:20px; background:var(--color-bg); border-radius:var(--radius-md); }
.payment-amount { display:flex; align-items:baseline; justify-content:center; gap:8px; margin-bottom:8px; }
.amount-label { font-size:14px; color:var(--color-text-secondary); }
.amount-value { font-size:32px; font-weight:800; color:var(--color-primary); }
.payment-desc { font-size:14px; color:var(--color-text-secondary); }
.payment-methods { display:flex; gap:12px; }
.payment-method-btn { flex:1; display:flex; flex-direction:column; align-items:center; gap:8px; padding:20px 16px; border:1px solid var(--color-border); border-radius:var(--radius-md); cursor:pointer; transition:all 0.3s; background:var(--color-bg-white); font-family:var(--font-sans); font-size:14px; font-weight:600; color:var(--color-text); }
.payment-method-btn:hover { border-color:var(--color-primary); box-shadow:0 4px 12px rgba(59,130,246,0.15); transform:translateY(-2px); }
.payment-qrcode { text-align:center; padding:20px 0; }
.qrcode-tip { font-size:14px; color:var(--color-text-secondary); margin-bottom:16px; }
.qrcode-wrapper { display:inline-block; padding:12px; background:#fff; border:1px solid var(--color-border); border-radius:var(--radius-md); }
.qrcode-status { font-size:14px; color:var(--color-text-muted); margin-top:12px; animation:pulse 2s infinite; }

/* ========== 模态框动画增强 ========== */
.modal-overlay { opacity:0; transition:opacity 0.3s ease; }
.modal-overlay.active { opacity:1; }
.modal-overlay .modal { transform:scale(0.95) translateY(10px); transition:transform 0.3s ease; }
.modal-overlay.active .modal { transform:scale(1) translateY(0); }

/* ========== 滚动条 ========== */
::-webkit-scrollbar { width:8px; }
::-webkit-scrollbar-track { background:var(--color-bg); }
::-webkit-scrollbar-thumb { background:#CBD5E1; border-radius:4px; }
::-webkit-scrollbar-thumb:hover { background:#94A3B8; }