/* ===== 基础 ===== */
* { margin:0; padding:0; box-sizing:border-box; font-family:"Microsoft YaHei",-apple-system,sans-serif; }
html, body { width:100%; overflow-x:hidden; }
body { background:#f9fcff; color:#333; display:flex; flex-direction:column; min-height:100vh; }
a { text-decoration:none; color:inherit; }

/* ===== 顶部导航 ===== */
.topbar { background:#fff; padding:0; width:100%; display:flex; align-items:center; position:fixed; top:0; left:0; z-index:300; box-shadow:0 1px 3px rgba(0,0,0,.06); height:75px; }
.topbar-inner { max-width:1280px; margin:0 auto; padding:0 24px; width:100%; display:flex; align-items:center; gap:24px; height:75px; }
.brand { display:flex; align-items:center; gap:10px; cursor:pointer; flex-shrink:0; }
.brand .logo-icon { width:36px; height:36px; display:flex; align-items:center; justify-content:center; }
.brand .logo-icon img { width:36px; height:36px; object-fit:contain; border-radius:50%; }
.brand .name { font-size:20px; font-weight:700; letter-spacing:1px; color:rgb(15,15,15); }
.brand .name span { font-weight:700; color:rgb(45,45,45); font-size:14px; margin-left:4px; }

/* 导航分类 */
.nav-cats { display:flex; align-items:center; gap:4px; flex:1; }
.nav-cat { padding:10px 16px; font-size:16px; font-weight:700; color:#000; letter-spacing:2px; cursor:pointer; border-radius:8px; position:relative; display:flex; align-items:center; gap:4px; transition:all .15s; }
.nav-cat:hover { background:#f3f4f6; color:#111; }
.nav-cat .chev { width:14px; height:14px; transition:transform .2s; }
.nav-cat.has-dropdown:hover .chev { transform:rotate(180deg); }
.nav-cat-disabled { color:#c0c4cc; cursor:not-allowed; }
.nav-cat-disabled:hover { background:none; color:#c0c4cc; }

/* 下拉面板 */
.dropdown { position:absolute; top:100%; left:50%; transform:translateX(-50%) translateY(8px); background:#fff; border-radius:16px; box-shadow:0 12px 40px rgba(0,0,0,.12); padding:20px; display:flex; gap:32px; opacity:0; visibility:hidden; transition:all .2s; min-width:480px; border:1px solid #f0f0f0; }
.nav-cat.has-dropdown:hover .dropdown { opacity:1; visibility:visible; transform:translateX(-50%) translateY(0); }
.dd-col { flex:1; }
.dd-label { font-size:11px; font-weight:600; color:#9ca3af; text-transform:uppercase; letter-spacing:.5px; margin-bottom:12px; }
.dd-item { display:flex; gap:12px; align-items:flex-start; padding:8px; border-radius:10px; margin:0 -8px; transition:all .15s; }
.dd-item:hover { background:#f9fafb; }
.dd-icon { width:36px; height:36px; border-radius:10px; display:flex; align-items:center; justify-content:center; flex-shrink:0; }
.dd-icon svg { width:18px; height:18px; }
.ic-blue { background:#f3f0ff; color:#7c5ce0; }
.ic-teal { background:#fff3ea; color:#ff7a29; }
.ic-orange { background:#fdeef3; color:#e91e63; }
.ic-purple { background:#f3e8ff; color:#8b5cf6; }
.ic-cyan { background:#e0f7fa; color:#0891b2; }
.ic-file { background:#e0f7fa; color:#0891b2; }
.dd-item strong { display:block; font-size:14px; font-weight:600; color:#1f2937; }
.dd-item small { display:block; font-size:12px; color:#9ca3af; margin-top:2px; }
.dd-links { display:grid; grid-template-columns:1fr 1fr; gap:4px 16px; }
.dd-links a { font-size:14px; color:#4b5563; padding:6px 0; transition:color .15s; }
.dd-links a:hover { color:#2563eb; }

/* 右侧操作区 */
.top-actions { display:flex; gap:10px; align-items:center; margin-left:auto; }
.search { position:relative; width:220px; }
.search input { width:100%; padding:10px 16px 10px 38px; border:none; background:#f3f4f6; border-radius:8px; font-size:14px; outline:none; transition:all .2s; color:#333; }
.search input::placeholder { color:#9ca3af; }
.search input:focus { background:#e5e7eb; }
.search svg { position:absolute; left:14px; top:50%; transform:translateY(-50%); width:16px; height:16px; color:#9ca3af; }
.search-dropdown { position:absolute; top:calc(100% + 8px); left:0; right:0; background:#fff; border-radius:8px; box-shadow:0 12px 40px rgba(0,0,0,.15); max-height:400px; overflow-y:auto; display:none; z-index:500; border:1px solid #f0f0f0; }
.search-dropdown.open { display:block; }
.sd-item { display:flex; align-items:center; gap:12px; padding:10px 14px; cursor:pointer; transition:background .1s; }
.sd-item:hover { background:#f9fafb; }
.sd-icon { width:36px; height:36px; border-radius:10px; display:flex; align-items:center; justify-content:center; flex-shrink:0; }
.sd-icon svg { width:18px; height:18px; }
.sd-item strong { font-size:14px; font-weight:500; color:#1f2937; }
.sd-empty { padding:20px; text-align:center; color:#9ca3af; font-size:13px; }
.act-btn { width:34px; height:34px; border-radius:50%; background:#f3f4f6; border:none; display:flex; align-items:center; justify-content:center; cursor:pointer; }
.mobile-search-btn { display:none; }
.act-btn svg { width:16px; height:16px; color:#6b7280; }
.btn-login { padding:10px 24px; background:#2563eb; color:#fff; border:none; border-radius:8px; font-size:14px; font-weight:600; cursor:pointer; transition:all .15s; }
.btn-login:hover { background:#1d4ed8; transform:translateY(-2px); }
.hamburger { display:none; }

/* ===== Hero区域 ===== */
.hero { background:linear-gradient(180deg,#e8f1fb 0%,#f9fcff 100%); padding:120px 24px 60px; text-align:center; }
.hero-inner { max-width:700px; margin:0 auto; }
.hero h1 { font-size:54px; font-weight:800; color:#111827; line-height:1.2; margin-bottom:20px; letter-spacing:1px; }
.hero h1 .hl { background:#dc2626; color:#fff; padding:2px 12px; border-radius:6px; display:inline-block; }
.hero p { font-size:16px; color:#6b7280; margin-bottom:48px; }
.hero-search { position:relative; max-width:720px; margin:0 auto; background:#fff; border-radius:50px; box-shadow:0 4px 20px rgba(37,99,235,.1); display:flex; align-items:center; padding:6px 6px 6px 20px; }
.hero-search > svg { width:20px; height:20px; color:#9ca3af; flex-shrink:0; }
.hero-search input { flex:1; border:none; outline:none; padding:12px 16px; font-size:15px; background:transparent; color:#333; }
.hero-search input::placeholder { color:#c0c4cc; }
.hero-search-btn { padding:12px 28px; background:#2563eb; color:#fff; border:none; border-radius:50px; font-size:15px; font-weight:600; cursor:pointer; flex-shrink:0; transition:all .15s; }
.hero-search-btn:hover { background:#1d4ed8; transform:translateY(-2px); }

/* ===== 分类彩色卡片 ===== */
.cat-cards { max-width:1280px; margin:0 auto; padding:0 24px; display:grid; grid-template-columns:repeat(5,1fr); gap:20px; }
.cat-card { border-radius:24px; overflow:hidden; cursor:pointer; transition:transform .2s, box-shadow .2s; background:#fff; box-shadow:0 1px 3px rgba(0,0,0,.06); }
.cat-card:hover { transform:translateY(-4px); box-shadow:0 12px 32px rgba(0,0,0,.12); }
.cc-color { padding:24px; color:#fff; position:relative; }
.cc-pdf .cc-color { background:#7c5ce0; }
.cc-image .cc-color { background:#ff7a29; }
.cc-text .cc-color { background:#e91e63; }
.cc-media .cc-color { background:#8b5cf6; }
.cc-file .cc-color { background:#0891b2; }
.cc-top { display:flex; justify-content:space-between; align-items:flex-start; margin-bottom:14px; }
.cc-icon { width:44px; height:44px; background:rgba(255,255,255,.2); border-radius:50%; display:flex; align-items:center; justify-content:center; flex-shrink:0; }
.cc-icon svg { width:22px; height:22px; color:#fff; }
.cc-count { background:rgba(255,255,255,.25); padding:4px 10px; border-radius:20px; font-size:12px; font-weight:500; }
.cc-soon-tag { background:rgba(255,255,255,.2); color:#e5e7eb; padding:4px 10px; border-radius:20px; font-size:12px; white-space:nowrap; }
.cc-color h3 { font-size:18px; font-weight:700; margin-bottom:4px; }
.cc-color p { font-size:13px; opacity:.85; margin-bottom:12px; }
.cc-arrow { position:absolute; right:20px; bottom:18px; font-size:18px; }
.cc-featured { padding:18px 20px; background:#fff; font-size:13px; border-top:1px solid #f3f4f6; }
.cc-featured span { color:#9ca3af; }
.cc-featured a { color:#2563eb; font-weight:600; text-decoration:none; margin-left:4px; }
.cc-featured em { color:#9ca3af; font-style:normal; margin-left:4px; }
.cc-soon:hover { transform:none; box-shadow:0 1px 3px rgba(0,0,0,.06); }
@media (max-width:1100px) { .cat-cards { grid-template-columns:repeat(3,1fr); } }
@media (max-width:768px) { .cat-cards { grid-template-columns:1fr 1fr; gap:10px; padding:0 16px; } }

/* ===== 工具网格 ===== */
.grid-section { max-width:1280px; margin:60px auto 0; padding:0 24px; }
.grid-header { margin-bottom:24px; text-align:center; }
.grid-header h2 { font-size:28px; font-weight:700; color:#111827; margin-bottom:8px; }
.grid-header p { font-size:14px; color:#9ca3af; }
.grid { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; }
@media (max-width:1100px) { .grid { grid-template-columns:repeat(3,1fr); } .cat-cards { grid-template-columns:repeat(2,1fr); } }
@media (max-width:800px) { .grid { grid-template-columns:repeat(2,1fr); } }

.card { background:#fff; border-radius:24px; padding:20px; border:1px solid #f0f0f0; cursor:pointer; transition:all .2s; display:flex; flex-direction:column; }
.card:hover { box-shadow:0 8px 24px rgba(0,0,0,.08); transform:translateY(-3px); border-color:#e5e7eb; }
.card-icon-wrap { width:38px; height:38px; border-radius:10px; display:flex; align-items:center; justify-content:center; margin-bottom:12px; }
.card-icon-wrap svg { width:20px; height:20px; }
.card h4 { font-size:15px; margin-bottom:6px; font-weight:700; color:#111827; }
.card p { font-size:13px; color:#6b7280; line-height:1.5; margin-bottom:12px; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.card-foot { border-top:1px solid #f3f4f6; padding-top:10px; margin-top:auto; display:flex; align-items:center; justify-content:space-between; }
.cat-label { font-size:12px; font-weight:500; }
.clr-blue { color:#7c5ce0; }
.clr-teal { color:#ff7a29; }
.clr-orange { color:#e91e63; }
.clr-purple { color:#8b5cf6; }
.clr-cyan { color:#0891b2; }
.heart { cursor:pointer; color:#d1d5db; background:none; border:none; padding:0; }
.heart svg { width:16px; height:16px; display:block; }
.heart.active { color:#ff4d7e; }
.heart:hover { color:#ff4d7e; }

/* ===== Hot Tools / Why / FAQ ===== */
.hot-section { max-width:1280px; margin:140px auto 0; padding:0 24px; }
.hot-section h2 { font-size:36px; margin-bottom:28px; color:#111827; font-weight:700; }
.why-section { max-width:1280px; margin:180px auto 0; padding:0 24px; }
.why-section h2, .faq-section h2 { font-size:36px; margin-bottom:28px; color:#111827; font-weight:700; }
.why-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
@media (max-width:800px){ .why-grid{grid-template-columns:1fr;} }
.why-card { background:#fff; border:1px solid #f0f0f0; border-radius:16px; padding:24px; }
.why-card h4 { font-size:16px; margin-bottom:10px; color:#111827; }
.why-card p { font-size:13px; color:#6b7280; line-height:1.7; }
.faq-section { max-width:1280px; margin:60px auto 0; padding:0 24px; }
.faq-item { background:#fff; border:1px solid #f0f0f0; border-radius:16px; padding:24px 28px; margin-bottom:16px; }
.faq-item h4 { font-size:15px; margin-bottom:8px; color:#111827; }
.faq-item p { font-size:13px; color:#6b7280; }

/* ===== 底部 ===== */
.footer { background:#fff; border-top:1px solid #f0f0f0; margin-top:auto; padding:30px 0; }
.footer-inner { max-width:1280px; margin:0 auto; padding:0 24px; display:flex; justify-content:space-between; align-items:center; font-size:13px; color:#111; }
.f-links a { color:#6b7280; text-decoration:none; margin-left:20px; font-size:13px; }
.f-links a:hover { color:#2563eb; }

/* ===== 手机端菜单 ===== */
.menu-overlay { display:none; position:fixed; top:75px; left:0; right:0; bottom:0; background:rgba(0,0,0,.3); z-index:150; }
.menu-overlay.open { display:block; }
.mobile-menu { position:fixed; top:75px; left:0; right:0; bottom:0; background:#fff; z-index:200; padding:20px 20px 80px; overflow-y:auto; transform:translateX(-100%); transition:transform .3s ease, visibility .3s; visibility:hidden; display:flex; flex-direction:column; }
.mobile-menu.open { transform:translateX(0); visibility:visible; }
.mm-search-wrap { position:relative; margin-bottom:16px; flex-shrink:0; }
.mm-search-icon { position:absolute; left:14px; top:50%; transform:translateY(-50%); width:18px; height:18px; color:#9ca3af; }
#mmSearch { width:100%; padding:14px 16px 14px 42px; border:none; background:#f3f4f6; border-radius:8px; font-size:15px; outline:none; }
.mm-cats { flex:1; overflow-y:auto; }
.mm-login-btn { position:sticky; bottom:0; left:0; right:0; width:100%; padding:14px; background:#2563eb; color:#fff; border:none; border-radius:8px; font-size:16px; font-weight:600; cursor:pointer; margin-top:16px; flex-shrink:0; box-shadow:0 -4px 12px rgba(0,0,0,.08); }
.mm-cat-head { padding:12px 0; font-size:16px; font-weight:700; color:#111827; cursor:pointer; display:flex; justify-content:space-between; align-items:center; border-bottom:1px solid #f3f4f6; }
.mm-chev { width:16px; height:16px; color:#9ca3af; transition:transform .2s; }
.mm-cat.open .mm-chev { transform:rotate(180deg); }
.mm-cat-tools { display:none; padding:4px 0 4px 12px; }
.mm-cat.open .mm-cat-tools { display:block; }
.mm-cat-tools a { display:flex; align-items:center; gap:10px; padding:10px 0; font-size:14px; color:#4b5563; text-decoration:none; border-bottom:1px solid #f9fafb; }
.mm-cat-tools a:hover { color:#2563eb; }
.mm-tool-icon { width:36px; height:24px; border-radius:4px; display:flex; align-items:center; justify-content:center; font-size:9px; font-weight:700; flex-shrink:0; }
.mm-tool-icon.ic-pdf { background:#f3f0ff; color:#7c5ce0; }
.mm-tool-icon.ic-img { background:#fff3ea; color:#ff7a29; }
.mm-tool-icon.ic-txt { background:#fdeef3; color:#e91e63; }
.m-disabled .mm-cat-head { color:#9ca3af; cursor:default; white-space:nowrap; }
.m-disabled .mm-cat-head small { font-size:10px; color:#c0c4cc; white-space:nowrap; }
.mm-login-btn { display:block; width:100%; margin-top:24px; padding:14px; background:#2563eb; color:#fff; border:none; border-radius:8px; font-size:16px; font-weight:600; cursor:pointer; }
.m-disabled { color:#c0c4cc; cursor:not-allowed; }

/* ===== 工具页通用样式 ===== */
.tool-header { max-width:1100px; margin:95px auto 0; padding:0 20px 20px; text-align:center; }
.breadcrumb { font-size:14px; color:#6b7280; margin-bottom:24px; display:flex; align-items:center; }
.breadcrumb a { color:#374151; text-decoration:none; display:inline-flex; align-items:center; gap:4px; }
.breadcrumb a:hover { color:#2563eb; }
.breadcrumb .sep { margin:0 6px; color:#d1d5db; }
.tool-title-row { display:flex; align-items:center; justify-content:center; gap:10px; margin-bottom:20px; }
.tool-title-row .t-icon svg { width:32px; height:32px; color:#111; }
.tool-title-row h1 { font-size:36px; font-weight:700; color:#111; letter-spacing:.5px; line-height:1; }
.tool-desc { font-size:14px; color:#9ca3af; }
.tool-container { max-width:1280px; margin:0 auto; padding:0 24px 40px; display:flex; gap:20px; align-items:flex-start; }
.tool-main { flex:1; min-width:0; }
.tool-side { width:320px; flex-shrink:0; }
.tool-box { background:#fff; border:1px solid #f0f0f0; border-radius:16px; padding:20px; margin-bottom:16px; }
.upload-zone { border:2px dashed #d1d5db; border-radius:16px; padding:40px 20px; text-align:center; cursor:pointer; transition:border-color .2s, background .2s; }
.upload-zone:hover { border-color:#2563eb; background:#f9fafb; }
.upload-zone .icon svg { width:40px; height:40px; color:#9ca3af; margin-bottom:12px; }
.upload-zone p { font-size:16px; color:#374151; margin-bottom:4px; }
.upload-zone .sub { font-size:12px; color:#9ca3af; }
.btn-go, .btn-zip { padding:12px 28px; background:#2563eb; color:#fff; border:none; border-radius:8px; font-size:15px; cursor:pointer; transition:all .15s; }
.btn-go:hover, .btn-zip:hover { background:#1d4ed8; transform:translateY(-2px); }
.btn-go:disabled, .btn-zip:disabled { background:#9ca3af; cursor:not-allowed; }
.tip-box { background:#eff6ff; border-radius:8px; padding:14px 16px; margin:12px 0; display:flex; gap:10px; align-items:flex-start; }
.tip-box h4 { font-size:13px; color:#1e40af; margin-bottom:2px; }
.tip-box p { font-size:13px; color:#3b82f6; }

/* 全局下拉框样式 */
select { padding:8px 12px; border:1px solid #e0e0e0; border-radius:8px; font-size:14px; background:#fff; color:#333; cursor:pointer; outline:none; transition:all .15s; }
select:hover { border-color:#2563eb; }
select:focus { border-color:#2563eb; }
.log-box { background:#fff; border:1px solid #f0f0f0; border-radius:16px; padding:16px; }
.log-content { max-height:400px; min-height:120px; overflow-y:auto; font-size:13px; line-height:1.8; color:#4b5563; }

/* ===== 手机端适配 ===== */
@media (max-width:768px) {
  .topbar { padding:0 12px; }
  .topbar-inner { gap:10px; padding:0; }
  .nav-cats { display:none; }
  .search { display:none; }
  .mobile-search-btn { display:flex; }
  .brand .name { font-size:14px; }
  .brand .name span { display:none; }
  .brand .logo-icon { width:30px; height:30px; }
  .brand .logo-icon img { width:30px; height:30px; }
  .hamburger { display:flex; }
  .btn-login { display:none; }
  .hero { padding:90px 16px 30px; }
  .hero h1 { font-size:28px; }
  .hero p { font-size:14px; }
  .cat-cards { grid-template-columns:repeat(3,1fr); gap:10px; padding:0 16px; }
  .cat-card { min-height:auto; padding:0; border-radius:16px; }
  .cc-color { padding:12px; }
  .cc-top { flex-wrap:nowrap; margin-bottom:8px; }
  .cc-arrow { display:none; }
  .cc-color h3 { font-size:13px; margin:8px 0 4px; white-space:nowrap; }
  .cc-color p { font-size:10px; white-space:nowrap; }
  .cc-icon { width:28px; height:28px; }
  .cc-count { font-size:10px; padding:2px 8px; white-space:nowrap; }
  .cc-featured { padding:8px 10px; font-size:11px; }
  .grid-section { padding:0 16px; margin-top:24px; }
  .grid { grid-template-columns:repeat(2,1fr); gap:12px; }
  .grid-header h2 { font-size:22px; }
  .card { padding:14px; }
  .card-icon-wrap { width:32px; height:32px; margin-bottom:10px; }
  .card h4 { font-size:14px; }
  .card p { font-size:12px; margin-bottom:10px; }
  .hot-section, .why-section, .faq-section { padding:0 16px; }
  .footer-inner { flex-direction:column; gap:10px; text-align:center; }
  .f-links a { margin:0 8px; }
  .tool-header { margin-top:85px; padding:0 16px 16px; }
  .tool-title-row h1 { font-size:22px; }
  .tool-container { flex-direction:column; padding:0 16px 24px; }
  .tool-side { width:100%; }
}

/* ===== 工具页淡入动画 ===== */
@keyframes fadeInUp { from { opacity:0; transform:translateY(12px); } to { opacity:1; transform:translateY(0); } }
.tool-page-wrap { animation: fadeInUp 0.4s ease-out both; }

/* ===== 工具页公共样式 ===== */
.tool-page-wrap { max-width:1100px; margin:0 auto; padding:0 20px 40px; }
.tool-box { background:#fff; border-radius:20px; padding:24px; box-shadow:0 2px 12px rgba(0,0,0,.04); margin-bottom:16px; }
.upload-zone { border:2px dashed #d1d9e6; border-radius:16px; padding:50px 20px; height:360px; display:flex; flex-direction:column; align-items:center; justify-content:center; cursor:pointer; transition:all .2s; }
.upload-zone:hover { border-color:#2563eb; background:#f8faff; }
.upload-zone .icon { margin-bottom:16px; display:flex; justify-content:center; }
.upload-zone .icon svg { width:36px; height:36px; color:#6b7280; }
.upload-zone p { color:#111; font-size:18px; font-weight:700; }
.upload-zone .sub { color:#9ca3af; font-size:13px; margin-top:8px; font-weight:400; }
.file-info { display:flex; align-items:center; gap:12px; padding:14px; background:#f7f8fa; border-radius:8px; margin-bottom:16px; }
.file-info .fname { font-weight:600; font-size:14px; flex:1; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.file-info .fsize { color:#9ca3af; font-size:12px; }
.file-info .del-btn { background:none; border:none; cursor:pointer; color:#9ca3af; padding:4px; }
.file-info .del-btn:hover { color:#ef4444; }
.file-info .del-btn svg { width:18px; height:18px; }
.controls { display:flex; gap:12px; align-items:center; flex-wrap:wrap; }
.controls label { font-size:13px; color:#6b7280; font-weight:600; }
.controls select { padding:8px 12px; border:1px solid #e5e7eb; border-radius:8px; font-size:13px; background:#fff; cursor:pointer; outline:none; }
.controls select:focus { border-color:#2563eb; }
.btn-go { background:#2563eb; color:#fff; border:none; padding:10px 24px; border-radius:8px; font-size:14px; font-weight:600; cursor:pointer; margin-left:auto; }
.btn-go:hover { background:#1d4ed8; transform:translateY(-2px); }
.btn-go:disabled { background:#1d4ed8; cursor:not-allowed; }
.btn-download { background:#2563eb; color:#fff; border:none; padding:12px 28px; border-radius:8px; font-size:15px; font-weight:600; cursor:pointer; display:inline-flex; align-items:center; gap:8px; text-decoration:none; }
.btn-download:hover { background:#1d4ed8; transform:translateY(-2px); }
.tip-box { background:#f0f9ff; border-radius:8px; padding:14px 18px; margin-bottom:16px; display:flex; align-items:center; gap:8px; font-size:15px; color:#4b5563; font-weight:500; }
.hidden { display:none !important; }
.progress-wrap { margin-top:14px; }
.progress-bar { height:6px; background:#e5e7eb; border-radius:3px; overflow:hidden; margin-top:6px; }
.progress-bar div { height:100%; width:0%; background:#2563eb; transition:width .3s; }
.progress-label { display:flex; justify-content:space-between; font-size:12px; color:#6b7280; }
.result-box { text-align:center; padding:30px 20px; }
.result-box .r-icon { width:56px; height:56px; border-radius:16px; background:#eff6ff; display:flex; align-items:center; justify-content:center; margin:0 auto 16px; }
.result-box .r-icon svg { width:28px; height:28px; color:#2563eb; }
.result-box h3 { font-size:18px; font-weight:700; color:#111; margin-bottom:6px; }
.result-box p { font-size:14px; color:#6b7280; margin-bottom:20px; }
.tool-note { background:#fff; border-radius:16px; padding:20px 24px; }
.tool-note .note-title { display:flex; align-items:center; gap:8px; margin-bottom:10px; }
.tool-note .note-title svg { width:18px; height:18px; color:#6b7280; }
.tool-note .note-title h4 { font-size:16px; font-weight:700; color:#111; margin:0; }
.tool-note .note-content { font-size:14px; color:#4b5563; line-height:1.9; }
.tool-note .note-content p { margin:0 0 8px; }
.tool-note .note-content p:last-child { margin-bottom:0; }
@keyframes spin { to { transform:rotate(360deg); } }

/* ===== 微动效优化 ===== */
/* 按钮点击按压效果 */
.btn-go, .btn-zip, .btn-download, .btn-login {
  transition: all .15s ease;
}
.btn-go:active, .btn-zip:active, .btn-download:active, .btn-login:active {
  transform: scale(0.97);
}

/* 页面内容淡入 */
.tool-header, .upload-zone, .result-box, .tool-note,
.hot-section, .why-section, .faq-section, .grid {
  animation: fadeInUp .45s ease;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 卡片展开时逐个淡入 */
#grid .card {
  animation: cardFadeIn .4s ease;
}

@keyframes cardFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 上传区域hover微动效 */
.upload-zone {
  transition: all .2s ease;
}

/* 导航下拉淡入 */
.dropdown {
  transform-origin: top center;
}

@media (max-width:768px) {
  .upload-zone { height:240px !important; padding:30px 16px !important; }
  .tool-header { margin-top:70px; }
  .tool-title-row h1 { font-size:28px; }
}