/* 裁音魔方 · 页面样式（自 pages/video-to-audio.html 抽取，修改后请同步对应页面） */
* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Poppins', 'Segoe UI', sans-serif; }
:root {
--primary: #4CAF50; --primary-light: #81C784; --primary-dark: #388E3C;
--dark-bg: #121212; --darker-bg: #0A0A0A; --card-bg: #1E1E1E;
--card-border: #333333; --text-primary: #FFFFFF; --text-secondary: #B0B0B0;
--text-muted: #6B6B6B; --warning: #FF9800; --error: #F44336;
--gradient: linear-gradient(135deg, var(--primary), var(--primary-dark));
--radius: 16px; --radius-sm: 10px;
}
body { background-color: var(--darker-bg); color: var(--text-primary); line-height: 1.6; overflow-x: hidden; }
a { text-decoration: none; color: inherit; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
/* ===== 导航栏 ===== */
.navbar { position: fixed; top: 0; left: 0; right: 0; background-color: rgba(10,10,10,0.95); backdrop-filter: blur(10px); z-index: 1000; padding: 20px 0; border-bottom: 1px solid rgba(76,175,80,0.1); transition: all 0.3s ease; }
.navbar.scrolled { padding: 15px 0; background-color: rgba(10,10,10,0.98); }
.nav-container { display: flex; justify-content: space-between; align-items: center; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 24px; font-weight: 700; color: var(--primary); flex-shrink: 0; }
.logo i { font-size: 28px; }
.logo span { color: white; }
.nav-links { display: flex; gap: 30px; align-items: center; }
.nav-links a { font-weight: 500; font-size: 16px; transition: color 0.3s; position: relative; color: var(--text-primary); }
.nav-links a:hover { color: var(--primary); }
.nav-links a::after { content: ''; position: absolute; bottom: -5px; left: 0; width: 0; height: 2px; background-color: var(--primary); transition: width 0.3s; }
.nav-links a:hover::after { width: 100%; }
.nav-buttons { display: flex; gap: 15px; align-items: center; flex-shrink: 0; }
.mobile-menu-btn { display: none; background: none; border: none; color: white; font-size: 24px; cursor: pointer; padding: 5px; }
.mobile-menu { position: fixed; top: 70px; left: 0; width: 100%; background-color: var(--darker-bg); padding: 20px; border-top: 1px solid var(--card-border); transform: translateY(-100%); opacity: 0; visibility: hidden; transition: all 0.3s; z-index: 999; }
.mobile-menu.active { transform: translateY(0); opacity: 1; visibility: visible; }
.mobile-nav-links { display: flex; flex-direction: column; gap: 20px; margin-bottom: 30px; }
.mobile-nav-links a { font-size: 18px; padding: 10px 0; border-bottom: 1px solid var(--card-border); color: var(--text-secondary); }
.mobile-nav-links a:hover { color: var(--primary); }
.mobile-buttons { display: flex; flex-direction: column; gap: 15px; }
/* ===== 页脚 ===== */
.footer { background-color: var(--dark-bg); padding: 80px 0 40px; margin-top: 100px; border-top: 1px solid var(--card-border); }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 40px; margin-bottom: 50px; }
.footer-column h3 { font-size: 20px; margin-bottom: 25px; color: var(--primary); }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 12px; }
.footer-links a { color: var(--text-secondary); transition: color 0.3s; }
.footer-links a:hover { color: var(--primary); }
.copyright { text-align: center; padding-top: 40px; border-top: 1px solid var(--card-border); color: var(--text-secondary); font-size: 14px; }
.beian-link { color: var(--text-secondary); text-decoration: none; margin: 0 5px; }
.beian-link:hover { color: var(--primary); text-decoration: underline; }
/* Hero */
.hero { padding: 130px 0 40px; background: radial-gradient(circle at 50% 10%, rgba(76,175,80,0.12) 0%, transparent 60%), var(--darker-bg); border-bottom: 1px solid rgba(255,255,255,0.08); }
.hero-content { text-align: center; max-width: 820px; margin: 0 auto; }
.hero-tag { display: inline-flex; align-items: center; gap: 8px; background: rgba(93,209,255,0.12); color: #5DD1FF; padding: 6px 16px; border-radius: 20px; font-size: 13px; font-weight: 500; margin-bottom: 20px; }
.hero-content h1 { font-size: 42px; font-weight: 700; line-height: 1.25; margin-bottom: 16px; }
.hero-content h1 .highlight { color: var(--primary); }
.hero-content p { font-size: 16px; color: var(--text-secondary); margin-bottom: 24px; line-height: 1.7; }
.hero-badges { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; margin-bottom: 32px; }
.hero-badges span { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-secondary); background: rgba(255,255,255,0.05); padding: 6px 14px; border-radius: 20px; }
.hero-badges i { color: var(--primary); }
.btn { padding: 10px 24px; border-radius: var(--radius-sm); font-weight: 600; cursor: pointer; transition: all 0.24s; border: none; font-size: 15px; display: inline-flex; align-items: center; gap: 8px; }
.btn-primary { background: var(--gradient); color: white; }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-secondary { background: transparent; color: var(--text-primary); border: 1px solid rgba(255,255,255,0.15); }
.btn-sm { padding: 6px 14px; font-size: 13px; border-radius: 8px; }
@media (hover: hover) {
.btn-primary:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(76,175,80,0.28); }
.btn-secondary:hover:not(:disabled) { border-color: var(--primary); color: var(--primary); }
}
/* Main tool card */
.main-card { background: var(--card-bg); border-radius: var(--radius); padding: 36px 40px; margin: 40px auto; max-width: 1200px; border: 1px solid rgba(255,255,255,0.08); box-shadow: 0 16px 48px rgba(0,0,0,0.6); }
.section-header { display: flex; align-items: center; justify-content: center; gap: 14px; margin-bottom: 16px; flex-wrap: wrap; }
.section-header i { font-size: 28px; color: var(--primary); }
.section-header h2 { font-weight: 700; font-size: 24px; }
.section-header .badge { background: rgba(93,209,255,0.15); color: #5DD1FF; padding: 3px 14px; border-radius: 20px; font-size: 12px; font-weight: 500; }
.desc { color: var(--text-secondary); margin-bottom: 24px; font-size: 14px; line-height: 1.8; text-align: center; }
.desc .hl { color: var(--primary); font-weight: 500; }
/* Upload zone */
.upload-zone { background: rgba(255,255,255,0.02); border: 2px dashed rgba(255,255,255,0.12); border-radius: var(--radius); padding: 44px 32px; text-align: center; transition: all 0.24s; cursor: pointer; }
.upload-zone.dragover { border-color: var(--primary); background: rgba(76,175,80,0.08); }
@media (hover: hover) { .upload-zone:hover { border-color: var(--primary); background: rgba(76,175,80,0.04); } }
.upload-zone .icon { font-size: 44px; margin-bottom: 14px; color: var(--primary); }
.upload-zone h3 { font-weight: 600; font-size: 19px; margin-bottom: 6px; }
.upload-zone p { color: var(--text-secondary); margin-bottom: 20px; font-size: 13px; }
.upload-zone .limit-tip { font-size: 12px; color: var(--text-muted); margin-top: 14px; }
.upload-zone .limit-tip i { margin-right: 4px; color: #5DD1FF; }
.file-input-wrap { display: inline-block; position: relative; }
.file-input-wrap input[type="file"] { position: absolute; left: 0; top: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; }
/* File list */
.file-list-container { margin-top: 24px; max-height: 720px; overflow-y: auto; border-radius: var(--radius); border: 1px solid rgba(255,255,255,0.08); background: rgba(0,0,0,0.2); }
.file-list-header { display: flex; justify-content: space-between; align-items: center; padding: 12px 20px; border-bottom: 1px solid rgba(255,255,255,0.08); font-size: 14px; color: var(--text-secondary); background: rgba(0,0,0,0.15); position: sticky; top: 0; z-index: 5; }
.file-list-header .count { color: var(--primary); font-weight: 600; }
.file-list-header .clear-all { color: var(--error); cursor: pointer; background: none; border: none; font-size: 13px; display: flex; align-items: center; gap: 4px; }
.file-list-items { padding: 4px; }
.file-editor-row { background: var(--card-bg); margin: 12px; border-radius: var(--radius-sm); padding: 20px; border: 1px solid rgba(255,255,255,0.08); position: relative; }
.file-editor-row.disabled { opacity: 0.55; pointer-events: none; }
.file-editor-row .processing-overlay { position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.3); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; z-index: 2; }
.file-editor-row .processing-overlay span { background: rgba(255,152,0,0.2); color: var(--warning); padding: 6px 18px; border-radius: 20px; font-size: 13px; font-weight: 600; display: flex; align-items: center; gap: 6px; }
.file-editor-row .processing-overlay span i { animation: spin 0.8s linear infinite; }
@keyframes spin { 100% { transform: rotate(360deg); } }
.file-info-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; flex-wrap: wrap; gap: 12px; }
.file-info { display: flex; align-items: center; gap: 14px; flex: 1; min-width: 0; }
.video-thumb { width: 80px; height: 52px; border-radius: 8px; background: linear-gradient(135deg, #333, #222); display: flex; align-items: center; justify-content: center; color: var(--text-muted); font-size: 20px; flex-shrink: 0; position: relative; overflow: hidden; border: 1px solid rgba(255,255,255,0.08); }
.video-thumb .duration { position: absolute; bottom: 2px; right: 4px; font-size: 10px; background: rgba(0,0,0,0.75); color: white; padding: 1px 5px; border-radius: 3px; }
.file-meta { min-width: 0; flex: 1; }
.file-name { font-size: 14px; font-weight: 600; margin-bottom: 4px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-size { font-size: 12px; color: var(--text-secondary); }
.file-tools { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.remove-file { color: var(--text-secondary); cursor: pointer; background: none; border: none; font-size: 16px; padding: 6px; border-radius: 6px; transition: 0.24s; }
.remove-file:hover { color: var(--error); background: rgba(244,67,54,0.1); }
.preview-btn { color: var(--text-secondary); cursor: pointer; background: none; border: none; font-size: 13px; padding: 6px 14px; border-radius: 8px; transition: 0.24s; display: inline-flex; align-items: center; gap: 6px; border: 1px solid rgba(255,255,255,0.15); }
.preview-btn:hover { border-color: var(--primary); color: var(--primary); }
/* Settings grid */
.audio-settings-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.setting-item { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.setting-item label { font-size: 12px; font-weight: 600; color: var(--text-secondary); }
.setting-item label .info-tag { font-size: 11px; color: var(--text-muted); font-weight: 400; margin-left: 4px; }
.setting-item select { background: var(--darker-bg); border: 1px solid rgba(255,255,255,0.12); border-radius: var(--radius-sm); padding: 10px 12px; color: white; font-size: 13px; cursor: pointer; transition: 0.24s; width: 100%; }
.setting-item select:hover:not(:disabled), .setting-item select:focus:not(:disabled) { border-color: var(--primary); outline: none; }
.setting-item select:disabled { opacity: 0.45; cursor: not-allowed; }
/* Action bar */
.action-bar { display: flex; justify-content: center; align-items: center; gap: 20px; margin-top: 28px; flex-wrap: wrap; flex-direction: column; }
.action-bar .btn-primary { padding: 14px 44px; font-size: 16px; border-radius: var(--radius-sm); }
.cost-hint { font-size: 13px; color: var(--text-secondary); margin-top: 8px; text-align: center; }
/* Result box */
.result-box { margin-top: 32px; border-top: 1px solid rgba(255,255,255,0.08); padding-top: 28px; display: none; }
.result-box.active { display: block; }
.result-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; flex-wrap: wrap; gap: 12px; }
.result-header h3 { font-size: 18px; font-weight: 600; }
.result-header h3 i { color: var(--primary); margin-right: 6px; }
.result-header-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; }
.result-meta { display: flex; align-items: center; gap: 10px; flex: 1; min-width: 120px; }
.result-meta .file-icon { font-size: 1.2rem; color: var(--primary); flex-shrink: 0; }
.result-meta .info .file-name { font-weight: 500; font-size: 0.85rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.result-actions-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; align-items: center; }
.audio-player-simple { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.play-btn-simple { width: 40px; height: 40px; border-radius: 50%; background: var(--gradient); color: white; border: none; font-size: 14px; cursor: pointer; display: flex; align-items: center; justify-content: center; flex-shrink: 0; transition: 0.24s; }
.play-btn-simple:hover { transform: scale(1.08); box-shadow: 0 6px 16px rgba(76,175,80,0.35); }
/* 波形图 */
.waveform-container { position: relative; width: 100%; height: 60px; background: rgba(0,0,0,0.4); border-radius: 8px; overflow: hidden; border: 1px solid var(--card-border); margin-bottom: 12px; }
.waveform-container canvas { width: 100%; height: 100%; display: block; cursor: pointer; }
/* 音量控制 */
.volume-control { display: flex; align-items: center; gap: 6px; flex-shrink: 0; }
.volume-icon { color: var(--text-secondary); font-size: 13px; cursor: pointer; width: 14px; text-align: center; transition: color .2s; }
.volume-icon:hover { color: var(--primary); }
.volume-slider { -webkit-appearance: none; appearance: none; width: 64px; height: 4px; border-radius: 2px; background: linear-gradient(to right, var(--primary) 0%, var(--primary) var(--vol-pct, 100%), rgba(255,255,255,0.15) var(--vol-pct, 100%), rgba(255,255,255,0.15) 100%); outline: none; cursor: pointer; margin: 0; }
.volume-slider::-webkit-slider-thumb { -webkit-appearance: none; width: 11px; height: 11px; border-radius: 50%; background: var(--primary); border: none; cursor: pointer; }
.volume-slider::-moz-range-thumb { width: 11px; height: 11px; border-radius: 50%; background: var(--primary); border: none; cursor: pointer; }
.volume-step { width: 20px; height: 20px; border-radius: 50%; border: 1px solid var(--card-border); background: transparent; color: var(--text-secondary); font-size: 10px; cursor: pointer; display: flex; align-items: center; justify-content: center; padding: 0; transition: all .2s; flex-shrink: 0; }
.volume-step:hover { border-color: var(--primary); color: var(--primary); }
.progress-container-simple { flex: 1; min-width: 120px; height: 6px; border-radius: 3px; background: rgba(255,255,255,0.1); cursor: pointer; }
.progress-bar-simple { height: 100%; border-radius: 3px; background: var(--gradient); width: 0%; transition: width 0.2s linear; }
.time-display-simple { font-size: 12px; color: var(--text-secondary); min-width: 90px; text-align: right; }
.time-display-simple .current { color: var(--primary); }
/* Result item with player */
.result-item { background: rgba(255,255,255,0.03); border-radius: var(--radius-sm); padding: 18px 20px; border: 1px solid rgba(255,255,255,0.08); margin-bottom: 12px; }
.result-item-top { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 14px; flex-wrap: wrap; }
.result-item-info { display: flex; align-items: center; flex: 1; min-width: 0; gap: 12px; }
.result-icon { width: 36px; height: 36px; background: rgba(76,175,80,0.12); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--primary); flex-shrink: 0; }
.result-name { font-size: 14px; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; display: block; }
.result-meta { font-size: 12px; color: var(--text-muted); }
.result-badge { padding: 2px 12px; border-radius: 40px; font-size: 11px; font-weight: 600; display: inline-flex; align-items: center; gap: 4px; flex-shrink: 0; background: rgba(255,152,0,0.12); color: var(--warning); }
.result-badge.unlocked { background: rgba(76,175,80,0.12); color: var(--primary); }
/* Audio player */
.audio-player-wrapper { background: rgba(0,0,0,0.35); border-radius: var(--radius-sm); padding: 12px 16px; border: 1px solid rgba(255,255,255,0.08); display: flex; align-items: center; gap: 14px; }
.play-btn { width: 38px; height: 38px; border-radius: 50%; background: var(--gradient); border: none; color: white; font-size: 14px; cursor: pointer; display: flex; align-items: center; justify-content: center; flex-shrink: 0; transition: 0.24s; }
.play-btn:hover { transform: scale(1.08); }
.progress-container { flex: 1; height: 6px; background: rgba(255,255,255,0.1); border-radius: 3px; cursor: pointer; position: relative; }
.progress-bar { height: 100%; background: var(--gradient); border-radius: 3px; width: 0%; transition: width 0.1s; }
.time-display { font-size: 12px; color: var(--text-secondary); font-weight: 500; flex-shrink: 0; min-width: 82px; text-align: right; font-variant-numeric: tabular-nums; }
.time-display .current { color: var(--primary); }
.result-actions-row { margin-top: 14px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; align-items: center; }
.unlock-btn { background: var(--gradient); color: white; border: none; padding: 8px 20px; border-radius: 20px; font-weight: 600; font-size: 13px; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; transition: 0.24s; }
.unlock-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(76,175,80,0.35); }
.download-btn-single { background: var(--gradient); color: white; border: none; padding: 8px 20px; border-radius: 20px; font-weight: 600; font-size: 13px; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; transition: 0.24s; }
.download-btn-single:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(76,175,80,0.35); }
/* Video preview modal */
.preview-modal { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.9); z-index: 2000; display: none; align-items: center; justify-content: center; backdrop-filter: blur(8px); }
.preview-modal.active { display: flex; }
.preview-content { position: relative; max-width: 800px; width: 90%; }
.preview-content video { width: 100%; border-radius: var(--radius); border: 1px solid rgba(255,255,255,0.08); }
.preview-close { position: absolute; top: -46px; right: 0; background: none; border: none; color: white; font-size: 26px; cursor: pointer; padding: 6px 12px; border-radius: 8px; }
.preview-title { color: white; font-size: 15px; margin-bottom: 10px; font-weight: 500; }
/* Progress overlay */
.progress-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0,0,0,0.85); display: none; justify-content: center; align-items: center; z-index: 2000; backdrop-filter: blur(5px); }
.progress-overlay.active { display: flex; }
.progress-modal { background-color: var(--card-bg); border-radius: var(--radius); padding: 32px; text-align: center; max-width: 400px; width: 90%; border: 1px solid rgba(255,255,255,0.08); }
.modal-header h3 { font-size: 20px; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.modal-sub { font-size: 14px; color: var(--text-secondary); margin-bottom: 20px; }
.progress-ring-wrap { display: flex; justify-content: center; position: relative; width: 100px; height: 100px; margin: 0 auto 20px; }
.progress-ring-mini svg { transform: rotate(-90deg); width: 100px; height: 100px; }
.progress-ring-mini .bg { fill: none; stroke: rgba(255,255,255,0.1); stroke-width: 8; }
.progress-ring-mini .progress { fill: none; stroke: var(--primary); stroke-width: 8; stroke-linecap: round; transition: stroke-dashoffset 0.3s; }
.percent-text { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); font-size: 22px; font-weight: 700; color: var(--primary); }
.progress-status { font-size: 13px; color: var(--text-muted); margin-bottom: 20px; }
.processing-steps { text-align: left; padding-top: 16px; border-top: 1px solid rgba(255,255,255,0.08); }
.processing-step { display: flex; align-items: center; gap: 10px; padding: 5px 0; color: var(--text-muted); font-size: 14px; transition: color 0.3s; }
.processing-step .status-icon { width: 20px; text-align: center; }
.processing-step.active { color: var(--primary); }
.processing-step.done { color: var(--primary); }
.cancel-btn { background: transparent; color: var(--text-muted); border: 1px solid rgba(255,255,255,0.12); padding: 8px 20px; border-radius: var(--radius-sm); cursor: pointer; transition: all 0.24s; font-size: 14px; }
.cancel-btn:hover:not(:disabled) { color: var(--error); border-color: var(--error); }
/* Points confirm overlay */
.point-confirm-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.85); display: none; justify-content: center; align-items: center; z-index: 2100; backdrop-filter: blur(5px); }
.point-confirm-overlay.active { display: flex; }
.point-confirm-modal { background: var(--card-bg); border-radius: var(--radius); padding: 32px; text-align: center; max-width: 420px; width: 90%; border: 1px solid rgba(255,255,255,0.08); }
.point-confirm-modal h3 { font-size: 20px; font-weight: 700; margin-bottom: 16px; }
.point-confirm-content { margin: 16px 0; }
.point-confirm-actions { display: flex; gap: 12px; justify-content: center; margin-top: 20px; }
/* Sections */
.section { padding: 70px 0; }
.section-title { text-align: center; margin-bottom: 44px; }
.section-title h2 { font-size: 30px; font-weight: 700; margin-bottom: 10px; }
.section-title p { color: var(--text-secondary); max-width: 620px; margin: 0 auto; line-height: 1.7; }
.scenarios-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.scenario-card { background: var(--card-bg); border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius); padding: 26px 22px; transition: all 0.24s; }
@media (hover: hover) { .scenario-card:hover { border-color: var(--primary); transform: scale(1.02); } }
.scenario-card .icon { width: 48px; height: 48px; background: rgba(76,175,80,0.12); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; margin-bottom: 14px; font-size: 20px; color: var(--primary); }
.scenario-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.scenario-card p { color: var(--text-secondary); font-size: 13px; line-height: 1.7; }
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.step-card { text-align: center; background: var(--card-bg); border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius); padding: 32px 24px; }
.step-num { display: inline-flex; align-items: center; justify-content: center; width: 48px; height: 48px; border-radius: 50%; background: var(--gradient); color: white; font-weight: 700; font-size: 20px; margin-bottom: 16px; }
.step-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 8px; }
.step-card p { color: var(--text-secondary); font-size: 14px; line-height: 1.7; }
.info-block { background: var(--card-bg); border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius); padding: 32px 36px; line-height: 1.9; }
.info-block h3 { font-size: 18px; margin-bottom: 14px; color: var(--primary); }
.info-block p { color: var(--text-secondary); font-size: 15px; margin-bottom: 12px; }
.privacy-block { background: linear-gradient(135deg, rgba(76,175,80,0.08), rgba(93,209,255,0.05)); border: 1px solid rgba(76,175,80,0.3); border-radius: var(--radius); padding: 32px 36px; text-align: center; }
.privacy-block .icon { font-size: 36px; color: var(--primary); margin-bottom: 14px; }
.privacy-block h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.privacy-block p { color: var(--text-secondary); font-size: 14px; max-width: 720px; margin: 0 auto; line-height: 1.8; }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { background: var(--card-bg); border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius-sm); margin-bottom: 12px; overflow: hidden; }
.faq-q { width: 100%; text-align: left; background: none; border: none; color: var(--text-primary); font-size: 15px; font-weight: 500; padding: 18px 22px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px; transition: 0.24s; }
.faq-q:hover { color: var(--primary); }
.faq-q i { transition: transform 0.24s; flex-shrink: 0; color: var(--primary); }
.faq-item.active .faq-q i { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; padding: 0 22px; }
.faq-item.active .faq-a { max-height: 300px; padding-bottom: 20px; }
.faq-a p { color: var(--text-secondary); font-size: 14px; line-height: 1.8; }
.cta-section { padding: 70px 0; text-align: center; background: linear-gradient(180deg, var(--darker-bg), rgba(18,18,18,0.9)); border-top: 1px solid rgba(255,255,255,0.08); }
.cta-section h2 { font-size: 30px; font-weight: 700; margin-bottom: 12px; }
.cta-section p { color: var(--text-secondary); max-width: 540px; margin: 0 auto 28px; line-height: 1.7; }
.toast { position: fixed; bottom: 30px; right: 30px; background: var(--card-bg); border: 1px solid var(--primary); border-radius: var(--radius-sm); padding: 14px 22px; color: white; font-weight: 500; display: flex; align-items: center; gap: 10px; z-index: 999; transform: translateY(100px); opacity: 0; transition: all 0.4s; }
.toast.show { transform: translateY(0); opacity: 1; }
.toast.error { border-color: var(--error); }
@media (max-width: 1024px) { .scenarios-grid { grid-template-columns: repeat(2, 1fr); } .audio-settings-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 768px) {
.navbar { padding: 15px 0; }
.nav-links, .nav-buttons { display: none; }
.mobile-menu-btn { display: block; }
.hero-content h1 { font-size: 28px; }
.main-card { padding: 22px 18px; }
.scenarios-grid, .steps-grid { grid-template-columns: 1fr; }
.audio-settings-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
.action-bar .btn-primary { width: 100%; }
.result-item-top { flex-direction: column; align-items: flex-start; }
.audio-player-wrapper { flex-wrap: wrap; gap: 10px; }
.time-display { min-width: auto; }
.result-header-row { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 480px) { .audio-settings-grid { grid-template-columns: 1fr; } .audio-player-simple { gap: 8px; } .time-display-simple { min-width: auto; } .file-info-row { flex-direction: column; align-items: flex-start; } .volume-slider { width: 48px; } .volume-step { width: 18px; height: 18px; font-size: 9px; } }