*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    text-decoration: none;
    -webkit-tap-highlight-color: transparent;
}

html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
        "Helvetica Neue", "PingFang SC", "Hiragino Sans GB",
        "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    background: #F2F2F7;
    color: #1C1C1E;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

a, a:link, a:visited, a:hover, a:active, a:focus, a *, a::before, a::after {
    text-decoration: none !important;
    color: inherit;
}

img, svg {
    max-width: 100%;
    display: block;
}

.container {
    width: min(1100px, 92%);
    margin: 0 auto;
    padding: 0 16px;
}

/* ===== iOS Top Navigation Bar ===== */
.ios-navbar {
    background: rgba(242, 242, 247, 0.72);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 0.5px solid rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background 0.3s ease;
}

.ios-navbar.scrolled {
    background: rgba(242, 242, 247, 0.92);
    box-shadow: 0 1px 12px rgba(0, 0, 0, 0.06);
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 44px;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 16px;
}

.navbar-logo {
    font-size: 17px;
    font-weight: 600;
    letter-spacing: -0.3px;
    color: #1C1C1E;
}

.navbar-logo span {
    font-weight: 300;
    color: #007AFF;
}

.navbar-links {
    display: flex;
    gap: 20px;
}

.navbar-links a {
    font-size: 15px;
    color: #007AFF;
    font-weight: 500;
    transition: opacity 0.2s ease;
}

.navbar-links a:hover {
    opacity: 0.7;
}

/* ===== Hero Section ===== */
.hero {
    text-align: center;
    padding: 72px 0 56px;
    background: linear-gradient(180deg, rgba(242, 242, 247, 0) 0%, rgba(0, 122, 255, 0.04) 100%);
    position: relative;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 122, 255, 0.2), transparent);
}

.hero h1 {
    font-size: 40px;
    font-weight: 700;
    letter-spacing: -1.2px;
    margin-bottom: 12px;
    background: linear-gradient(135deg, #1C1C1E 0%, #007AFF 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    color: #8E8E93;
    font-size: 17px;
    margin-bottom: 32px;
    font-weight: 400;
}

/* ===== Search Bar ===== */
.search-box {
    display: flex;
    max-width: 620px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 0.5px solid rgba(0, 0, 0, 0.06);
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06), 0 0 0 0.5px rgba(0, 0, 0, 0.04);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.search-box:focus-within {
    box-shadow: 0 4px 20px rgba(0, 122, 255, 0.15), 0 0 0 0.5px rgba(0, 122, 255, 0.2);
    transform: translateY(-1px);
}

.search-box input {
    flex: 1;
    min-width: 0;
    padding: 14px 18px;
    border: none;
    outline: none;
    font-size: 16px;
    background: transparent;
    color: #1C1C1E;
    font-family: inherit;
}

.search-box input::placeholder {
    color: #C7C7CC;
}

.search-box button {
    flex-shrink: 0;
    padding: 0 24px;
    border: none;
    background: #007AFF;
    color: white;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    font-family: inherit;
    transition: background 0.2s ease;
}

.search-box button:hover {
    background: #0062CC;
}

/* ===== Section Titles ===== */
.section-title {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.3px;
    margin-bottom: 16px;
    padding-left: 4px;
    color: #1C1C1E;
}

/* ===== Tool Grid ===== */
.tools-section {
    padding: 50px 0;
}

.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
}

/* 首页分类入口 / 使用教程 / 技术原理：一行一个长条（与手机端一致） */
#categoryGrid,
#tutorialGrid,
#techGrid {
    grid-template-columns: 1fr;
    max-width: 760px;
    margin: 0 auto;
    gap: 12px;
}

/* ===== iOS-Style Tool Cards ===== */
.tool-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px;
    background: rgba(255, 255, 255, 0.78);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 0.5px solid rgba(0, 0, 0, 0.04);
    border-radius: 16px;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.02), 0 0 0 0.5px rgba(0, 0, 0, 0.02);
    animation: cardAppear 0.5s ease both;
}

.tool-card:nth-child(1) { animation-delay: 0.05s; }
.tool-card:nth-child(2) { animation-delay: 0.1s; }
.tool-card:nth-child(3) { animation-delay: 0.15s; }
.tool-card:nth-child(4) { animation-delay: 0.2s; }
.tool-card:nth-child(5) { animation-delay: 0.25s; }
.tool-card:nth-child(6) { animation-delay: 0.3s; }
.tool-card:nth-child(7) { animation-delay: 0.35s; }
.tool-card:nth-child(8) { animation-delay: 0.4s; }
.tool-card:nth-child(9) { animation-delay: 0.45s; }
.tool-card:nth-child(10) { animation-delay: 0.5s; }
.tool-card:nth-child(11) { animation-delay: 0.55s; }
.tool-card:nth-child(12) { animation-delay: 0.6s; }
.tool-card:nth-child(13) { animation-delay: 0.65s; }
.tool-card:nth-child(14) { animation-delay: 0.7s; }
.tool-card:nth-child(15) { animation-delay: 0.75s; }
.tool-card:nth-child(16) { animation-delay: 0.8s; }

@keyframes cardAppear {
    from {
        opacity: 0;
        transform: translateY(16px) scale(0.97);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.tool-card:hover {
    transform: translateY(-3px) scale(1.01);
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1), 0 0 0 0.5px rgba(0, 122, 255, 0.1);
    border-color: rgba(0, 122, 255, 0.1);
}

.tool-card:active {
    transform: translateY(-1px) scale(0.99);
    transition-duration: 0.1s;
}

.tool-icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.tool-card:hover .tool-icon {
    transform: scale(1.08) rotate(-2deg);
}

.tool-icon.blue { background: rgba(0, 122, 255, 0.12); color: #007AFF; }
.tool-icon.green { background: rgba(52, 199, 89, 0.12); color: #34C759; }
.tool-icon.orange { background: rgba(255, 149, 0, 0.12); color: #FF9500; }
.tool-icon.purple { background: rgba(175, 82, 222, 0.12); color: #AF52DE; }
.tool-icon.red { background: rgba(255, 59, 48, 0.12); color: #FF3B30; }
.tool-icon.teal { background: rgba(90, 200, 180, 0.12); color: #5AC8C8; }
.tool-icon.pink { background: rgba(255, 45, 85, 0.12); color: #FF2D55; }
.tool-icon.yellow { background: rgba(255, 204, 0, 0.15); color: #FFCC00; }
.tool-icon.indigo { background: rgba(88, 86, 214, 0.12); color: #5856D6; }

.tool-card-info {
    flex: 1;
    min-width: 0;
}

.tool-card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
    color: #1C1C1E;
    letter-spacing: -0.2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tool-card p {
    color: #8E8E93;
    font-size: 13px;
    line-height: 1.5;
    font-weight: 400;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== Category Separator ===== */
.category-title {
    font-size: 17px;
    font-weight: 600;
    color: #1C1C1E;
    margin-top: 40px;
    margin-bottom: 16px;
    padding-left: 4px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.category-title::before {
    content: '';
    width: 6px;
    height: 20px;
    background: #007AFF;
    border-radius: 3px;
    flex-shrink: 0;
}

/* ===== About Section ===== */
.about {
    padding: 56px 0;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    margin: 16px 0;
    border-radius: 20px;
    border: 0.5px solid rgba(0, 0, 0, 0.04);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.02);
}

.about h2 {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.3px;
    margin-bottom: 16px;
    text-align: center;
}

.about p {
    max-width: 600px;
    margin: 0 auto;
    color: #8E8E93;
    font-size: 16px;
    line-height: 1.8;
    text-align: center;
}

/* ===== Footer ===== */
footer {
    padding: 40px 0 32px;
    text-align: center;
    background: transparent;
}

footer p {
    color: #C7C7CC;
    font-size: 13px;
    font-weight: 400;
}

/* ===== Search Empty ===== */
.search-empty {
    text-align: center;
    color: #C7C7CC;
    font-size: 15px;
    padding: 32px 0;
    display: none;
}

.search-empty.visible {
    display: block;
}

/* ===== Back to Top ===== */
.back-to-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(0, 122, 255, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: white;
    border: none;
    cursor: pointer;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(0, 122, 255, 0.3);
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: 50;
}

.back-to-top.visible {
    opacity: 1;
    transform: scale(1);
}

.back-to-top:hover {
    background: #0062CC;
    transform: scale(1.08);
}

/* ===== Mobile Responsive ===== */
@media (max-width: 600px) {
    .container {
        width: min(1100px, 90%);
        padding: 0 12px;
    }

    .navbar-inner {
        height: 44px;
    }

    .navbar-logo {
        font-size: 16px;
    }

    .navbar-links {
        gap: 14px;
    }

    .navbar-links a {
        font-size: 14px;
    }

    .hero {
        padding: 50px 0 40px;
    }

    .hero h1 {
        font-size: 28px;
        letter-spacing: -0.8px;
    }

    .hero p {
        font-size: 16px;
    }

    .search-box {
        border-radius: 12px;
    }

    .tool-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .tool-card {
        padding: 14px;
        border-radius: 14px;
    }

    .tool-icon {
        width: 38px;
        height: 38px;
        border-radius: 10px;
        font-size: 16px;
    }

    .tool-card h3 {
        white-space: normal;
    }

    .tools-section {
        padding: 36px 0;
    }

    .category-title {
        margin-top: 32px;
        font-size: 16px;
    }

    .about {
        padding: 40px 0;
        margin: 12px 0;
        border-radius: 16px;
    }

    .about h2 {
        font-size: 20px;
    }

    /* Tool Page Mobile */
    .tool-page-header {
        padding: 32px 0 16px;
    }

    .tool-page-header h1 {
        font-size: 24px;
    }

    .tool-page-header .desc {
        font-size: 15px;
    }

    .tool-card-main {
        padding: 20px 16px;
        border-radius: 16px;
    }

    .buttons {
        gap: 8px;
    }

    .buttons .tool-btn {
        flex: 1 1 calc(50% - 8px);
        min-width: 0;
        padding: 12px 16px;
        font-size: 15px;
        text-align: center;
    }

    .info {
        padding: 16px;
        border-radius: 14px;
    }

    .info h2 {
        font-size: 16px;
    }

    .info p {
        font-size: 13px;
        line-height: 1.6;
    }

    .hash-result {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .hash-result .copy-btn {
        align-self: flex-end;
    }

    .tool-grid-result {
        gap: 8px;
    }

    .result-card {
        padding: 12px;
    }

    .output-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    .radio-group {
        flex-wrap: wrap;
        gap: 8px;
    }

    .radio-group label {
        padding: 6px 12px;
        font-size: 13px;
    }
}

/* ===== iOS Scrollbar ===== */
::-webkit-scrollbar {
    width: 0;
    height: 0;
}

/* ===== Selection ===== */
::selection {
    background: rgba(0, 122, 255, 0.2);
    color: #1C1C1E;
}

/* ===== Glass Card Base ===== */
.glass-card {
    background: rgba(255, 255, 255, 0.78);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 0.5px solid rgba(0, 0, 0, 0.04);
    border-radius: 16px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.02);
}

/* ===== Divider ===== */
.divider {
    height: 0.5px;
    background: rgba(0, 0, 0, 0.06);
    margin: 0;
}

/* ===== Button iOS Style ===== */
.ios-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 12px;
    border: none;
    font-family: inherit;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.ios-btn-primary {
    background: #007AFF;
    color: white;
}

.ios-btn-primary:hover {
    background: #0062CC;
}

.ios-btn-secondary {
    background: rgba(0, 122, 255, 0.08);
    color: #007AFF;
}

.ios-btn-secondary:hover {
    background: rgba(0, 122, 255, 0.14);
}

/* ===== Tool Page Shared Styles ===== */
.tool-page-header {
    text-align: center;
    padding: 40px 0 24px;
}

.tool-page-header h1 {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 8px;
}

.tool-page-header .desc {
    color: #8E8E93;
    font-size: 16px;
}

.tool-page-title {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 8px;
    padding-top: 8px;
    text-align: center;
    background: linear-gradient(135deg, #1C1C1E 0%, #007AFF 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.tool-page-main .section-title { font-size: 17px; font-weight: 600; margin-bottom: 12px; color: #1C1C1E; }

.tool-card-main {
    background: rgba(255, 255, 255, 0.78);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 0.5px solid rgba(0, 0, 0, 0.04);
    border-radius: 20px;
    padding: 28px 32px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.02);
    margin-bottom: 20px;
    animation: cardAppear 0.5s ease both;
}

.tool-input-group {
    margin-bottom: 20px;
}

.tool-input-label {
    font-size: 14px;
    font-weight: 500;
    color: #8E8E93;
    margin-bottom: 10px;
    display: block;
}

.tool-input {
    width: 100%;
    padding: 14px 16px;
    border: 0.5px solid rgba(0, 0, 0, 0.08);
    border-radius: 12px;
    font-size: 15px;
    font-family: inherit;
    background: rgba(255, 255, 255, 0.9);
    color: #1C1C1E;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    outline: none;
}

.tool-input:focus {
    border-color: #007AFF;
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

.tool-input::placeholder {
    color: #C7C7CC;
}

.tool-textarea {
    min-height: 180px;
    resize: vertical;
    line-height: 1.6;
}

.tool-btn {
    padding: 12px 32px;
    border-radius: 12px;
    border: none;
    font-family: inherit;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    background: #007AFF;
    color: white;
    letter-spacing: -0.1px;
}

.tool-btn:hover {
    background: #0062CC;
    transform: translateY(-1px);
}

.tool-btn:active {
    transform: translateY(0);
    transition-duration: 0.1s;
}

.tool-btn-secondary {
    background: rgba(0, 122, 255, 0.08);
    color: #007AFF;
}

.tool-btn-secondary:hover {
    background: rgba(0, 122, 255, 0.14);
}

.tool-result-box {
    background: rgba(0, 0, 0, 0.03);
    border-radius: 12px;
    padding: 18px;
    font-size: 14px;
    line-height: 1.6;
    color: #1C1C1E;
    word-break: break-all;
    min-height: 60px;
    white-space: pre-wrap;
}

.tool-output-label {
    font-size: 14px;
    font-weight: 500;
    color: #8E8E93;
    margin-bottom: 8px;
}

.tool-copy-btn {
    padding: 8px 16px;
    border-radius: 10px;
    border: 0.5px solid rgba(0, 0, 0, 0.08);
    background: rgba(255, 255, 255, 0.8);
    color: #007AFF;
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    backdrop-filter: blur(10px);
}

.tool-copy-btn:hover {
    background: rgba(0, 122, 255, 0.1);
    border-color: rgba(0, 122, 255, 0.2);
}

.tool-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    background: rgba(0, 0, 0, 0.03);
    padding: 4px;
    border-radius: 12px;
}

.tool-tab {
    flex: 1;
    padding: 10px 16px;
    border: none;
    border-radius: 10px;
    background: transparent;
    color: #8E8E93;
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.25s ease;
}

.tool-tab.active {
    background: rgba(255, 255, 255, 0.9);
    color: #1C1C1E;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

.tool-tab:hover:not(.active) {
    color: #1C1C1E;
}

.tool-divider {
    height: 0.5px;
    background: rgba(0, 0, 0, 0.06);
    margin: 20px 0;
}

/* ===== Toast Notification ===== */
.toast {
    position: fixed;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: rgba(28, 28, 30, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    color: white;
    padding: 10px 20px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 200;
    pointer-events: none;
}

.toast.visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ===== Special Input Types ===== */
input[type="file"].file-input { display: none; }
input[type="range"].tool-input {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    background: #E5E5EA;
    border-radius: 2px;
    outline: none;
}
input[type="range"].tool-input::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: #007AFF;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0,122,255,0.3);
}
input[type="range"].tool-input::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: #007AFF;
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 6px rgba(0,122,255,0.3);
}
input[type="number"].tool-input {
    padding: 14px 16px;
    border: 0.5px solid rgba(0,0,0,0.08);
    border-radius: 12px;
    font-size: 15px;
    font-family: inherit;
    background: rgba(255,255,255,0.9);
    color: #1C1C1E;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}
input[type="number"].tool-input:focus {
    border-color: #007AFF;
    box-shadow: 0 0 0 3px rgba(0,122,255,0.1);
}
.file-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: #007AFF;
    color: white;
    border-radius: 12px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
}
.file-label:hover { background: #0062CC; }
.file-label.secondary {
    background: rgba(0,122,255,0.08);
    color: #007AFF;
}
.file-label.secondary:hover { background: rgba(0,122,255,0.14); }
.radio-group { display: flex; gap: 16px; margin: 8px 0; }
.radio-group label {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 14px; color: #8E8E93; cursor: pointer;
    padding: 8px 16px; border-radius: 10px;
    transition: all 0.2s;
}
.radio-group label:has(input:checked) {
    background: rgba(0,122,255,0.08);
    color: #007AFF;
    font-weight: 500;
}
.radio-group input[type="radio"] {
    appearance: none; -webkit-appearance: none;
    width: 18px; height: 18px; border-radius: 50%;
    border: 2px solid #C7C7CC; cursor: pointer;
    position: relative; transition: all 0.2s;
}
.radio-group input[type="radio"]:checked {
    border-color: #007AFF;
    background: #007AFF;
}
.radio-group input[type="radio"]:checked::after {
    content: ''; position: absolute; top: 2px; left: 5px;
    width: 5px; height: 9px; border: solid white;
    border-width: 0 2px 2px 0; transform: rotate(45deg);
}
.preview-container { border-radius: 16px; overflow: hidden; border: 0.5px solid rgba(0,0,0,0.06); background: white; }

/* ===== Tool Page Specific ===== */
.tool-page-main { padding-bottom: 48px; }
.tool-page-main .desc { color: #8E8E93; font-size: 16px; line-height: 1.6; text-align: center; margin-bottom: 24px; }
.tool-page-main .buttons { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-bottom: 4px; }
.tool-page-main .status { font-size: 14px; padding: 12px 16px; border-radius: 10px; margin-bottom: 4px; min-height: 0; }
.tool-page-main .status:empty { display: none; padding: 0; margin: 0; }
.tool-page-main .status.success-text { background: rgba(52,199,89,0.1); color: #34C759; }
.tool-page-main .status.error-text { background: rgba(255,59,48,0.1); color: #FF3B30; }
.tool-page-main .info { background: rgba(255,255,255,0.5); border-radius: 16px; padding: 24px; margin-top: 8px; }
.tool-page-main .info h2 { font-size: 17px; font-weight: 600; margin-top: 20px; margin-bottom: 10px; }
.tool-page-main .info h2:first-child { margin-top: 0; }
.tool-page-main .info p { color: #8E8E93; font-size: 14px; line-height: 1.7; margin-bottom: 8px; }
.tool-page-main .info p:last-child { margin-bottom: 0; }
.tool-page-main .copy-btn { padding: 6px 14px; border-radius: 8px; border: 0.5px solid rgba(0,0,0,0.08); background: rgba(255,255,255,0.8); color: #007AFF; font-family: inherit; font-size: 13px; font-weight: 500; cursor: pointer; transition: all 0.2s; }
.tool-page-main .copy-btn:hover { background: rgba(0,122,255,0.1); }
.tool-page-main .tool-result { background: rgba(0,0,0,0.03); border-radius: 12px; padding: 16px; font-size: 14px; line-height: 1.6; color: #1C1C1E; word-break: break-all; min-height: 60px; white-space: pre-wrap; }
.tool-page-main .tool-output { margin-top: 16px; }
.tool-page-main .output-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.tool-page-main .output-row .label { font-size: 13px; color: #8E8E93; font-weight: 500; }
.tool-page-main .char-count { font-size: 13px; color: #C7C7CC; margin-top: 8px; text-align: right; }
.tool-page-main .tool-grid-result { display: grid; gap: 12px; }
.tool-page-main .result-card { background: rgba(0,0,0,0.03); border-radius: 12px; padding: 14px; }
.tool-page-main .result-card .result-label { font-size: 12px; color: #8E8E93; margin-bottom: 4px; }
.tool-page-main .result-card .result-value { font-size: 14px; font-weight: 500; word-break: break-all; }

/* Stats grid */
.tool-page-main .stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 12px; margin-top: 20px; }
.tool-page-main .stat { background: rgba(0,0,0,0.03); border-radius: 12px; padding: 16px; text-align: center; }
.tool-page-main .stat .num { font-size: 28px; font-weight: 700; color: #007AFF; line-height: 1.2; }
.tool-page-main .stat .lbl { font-size: 12px; color: #8E8E93; margin-top: 6px; }

/* Hash list */
.tool-page-main .hash-list { display: flex; flex-direction: column; gap: 12px; }
.tool-page-main .hash-item { background: rgba(0,0,0,0.03); border-radius: 12px; padding: 16px; }
.tool-page-main .hash-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.tool-page-main .hash-name { font-size: 13px; font-weight: 600; color: #007AFF; }
.tool-page-main .hash-item .value { font-size: 13px; word-break: break-all; line-height: 1.5; }

/* Timestamp */
.tool-page-main .now-card { background: rgba(0,122,255,0.04); border-radius: 14px; padding: 16px; margin-bottom: 20px; }
.tool-page-main .now-card .now-title { font-size: 13px; color: #8E8E93; font-weight: 500; margin-bottom: 10px; }
.tool-page-main .now-item { display: flex; justify-content: space-between; align-items: center; padding: 8px 0; border-bottom: 0.5px solid rgba(0,0,0,0.04); }
.tool-page-main .now-item:last-child { border-bottom: none; }
.tool-page-main .now-item .key { font-size: 13px; color: #8E8E93; }
.tool-page-main .now-item .val { font-size: 15px; font-weight: 600; color: #1C1C1E; font-family: "SF Mono", Menlo, monospace; }
.tool-page-main .result-box { background: rgba(0,0,0,0.03); border-radius: 12px; padding: 14px; margin-top: 12px; }
.tool-page-main .result-row { display: flex; justify-content: space-between; align-items: center; padding: 6px 0; }
.tool-page-main .result-row .k { font-size: 13px; color: #8E8E93; }
.tool-page-main .result-row .v { font-size: 14px; font-weight: 600; color: #1C1C1E; font-family: "SF Mono", Menlo, monospace; }

/* Upload / Drop zone */
.tool-page-main .drop-zone { border: 2px dashed rgba(0,0,0,0.1); border-radius: 16px; padding: 40px 20px; text-align: center; cursor: pointer; transition: all 0.2s; background: rgba(255,255,255,0.5); }
.tool-page-main .drop-zone:hover, .tool-page-main .drop-zone.dragover { border-color: #007AFF; background: rgba(0,122,255,0.04); }
.tool-page-main .drop-zone .big { font-size: 40px; margin-bottom: 12px; }
.tool-page-main .drop-zone p { color: #8E8E93; font-size: 14px; line-height: 1.6; }
.tool-page-main .drop-zone p strong { color: #1C1C1E; }

/* Upload area (word/excel) */
.tool-page-main .upload-area { border: 2px dashed rgba(0,0,0,0.1); border-radius: 16px; padding: 40px 20px; text-align: center; cursor: pointer; transition: all 0.2s; background: rgba(255,255,255,0.5); }
.tool-page-main .upload-area:hover, .tool-page-main .upload-area.dragover { border-color: #007AFF; background: rgba(0,122,255,0.04); }
.tool-page-main .upload-area .upload-icon { font-size: 40px; margin-bottom: 12px; }
.tool-page-main .upload-area .upload-text { font-size: 15px; font-weight: 500; color: #1C1C1E; margin-bottom: 4px; }
.tool-page-main .upload-area .upload-hint { font-size: 13px; color: #8E8E93; }
.tool-page-main .file-info { display: none; background: rgba(0,0,0,0.03); border-radius: 12px; padding: 14px; margin: 16px 0; }
.tool-page-main .file-info.show { display: block; }
.tool-page-main .file-name { font-size: 14px; font-weight: 600; color: #1C1C1E; margin-bottom: 4px; word-break: break-all; }
.tool-page-main .file-size { font-size: 13px; color: #8E8E93; }
.tool-page-main .error { display: none; background: rgba(255,59,48,0.08); color: #FF3B30; border-radius: 12px; padding: 14px; margin: 12px 0; font-size: 14px; }
.tool-page-main .error.show { display: block; }
.tool-page-main .success { display: none; background: rgba(52,199,89,0.08); color: #34C759; border-radius: 12px; padding: 14px; margin: 12px 0; font-size: 14px; }
.tool-page-main .success.show { display: block; }

/* Options row */
.tool-page-main .options { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; margin-bottom: 16px; }
.tool-page-main .options label { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; color: #8E8E93; }
.tool-page-main .options select { padding: 8px 12px; border-radius: 10px; border: 0.5px solid rgba(0,0,0,0.08); background: rgba(255,255,255,0.9); font-family: inherit; font-size: 14px; color: #1C1C1E; outline: none; }
.tool-page-main .options select:focus { border-color: #007AFF; }
.tool-page-main .options input[type="number"] { width: 80px; padding: 8px 10px; border-radius: 10px; border: 0.5px solid rgba(0,0,0,0.08); font-family: inherit; font-size: 14px; text-align: center; outline: none; }
.tool-page-main .options input[type="number"]:focus { border-color: #007AFF; }

/* Tabs */
.tool-page-main .tabs { display: flex; gap: 0; margin-bottom: 20px; background: rgba(0,0,0,0.03); padding: 4px; border-radius: 12px; }
.tool-page-main .tab { flex: 1; padding: 10px 16px; border: none; border-radius: 10px; background: transparent; color: #8E8E93; font-family: inherit; font-size: 14px; font-weight: 500; cursor: pointer; transition: all 0.25s; }
.tool-page-main .tab.active { background: rgba(255,255,255,0.9); color: #1C1C1E; box-shadow: 0 1px 4px rgba(0,0,0,0.06); }
.tool-page-main .tab:hover:not(.active) { color: #1C1C1E; }

/* Markdown panes */
.tool-page-main .panes { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.tool-page-main .pane { display: flex; flex-direction: column; }
.tool-page-main .pane .title { font-size: 13px; font-weight: 500; color: #8E8E93; margin-bottom: 8px; }
.tool-page-main .pane .tool-textarea { min-height: 420px; flex: 1; }
.tool-page-main .pane .preview { min-height: 420px; flex: 1; background: rgba(0,0,0,0.03); border-radius: 12px; padding: 16px; overflow-y: auto; }
.tool-page-main .preview { background: rgba(255,255,255,0.6); border-radius: 12px; padding: 16px; min-height: 200px; font-size: 14px; line-height: 1.7; overflow-y: auto; }

/* Prism/Phantom previews */
.tool-page-main .previews { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 16px; }
.tool-page-main .previews-3 { grid-template-columns: 1fr 1fr 1fr; }
.tool-page-main .preview-card { background: rgba(0,0,0,0.03); border-radius: 12px; padding: 14px; text-align: center; min-height: 180px; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.tool-page-main .preview-card.has-img { justify-content: flex-start; }
.tool-page-main .preview-card h3 { font-size: 13px; font-weight: 500; color: #8E8E93; margin-bottom: 10px; }
.tool-page-main .preview-card img { max-width: 100%; border-radius: 8px; display: none; }
.tool-page-main .preview-card img[src] { display: block; }
.tool-page-main .preview-card .placeholder { color: #C7C7CC; font-size: 40px; margin-bottom: 8px; }
.tool-page-main .preview-card .meta { font-size: 13px; color: #8E8E93; margin-top: 8px; }
.tool-page-main .canvas-wrap { border-radius: 10px; overflow: hidden; margin-bottom: 8px; }
.tool-page-main .canvas-wrap canvas { display: block; max-width: 100%; }
.tool-page-main .canvas-wrap.white { background: #fff; }
.tool-page-main .canvas-wrap.black { background: #000; }
.tool-page-main .canvas-wrap.checker { background: repeating-conic-gradient(#ccc 0% 25%, #fff 0% 50%) 50%/16px 16px; }
.tool-page-main .meta { font-size: 13px; color: #8E8E93; margin-top: 8px; line-height: 1.5; }
.tool-page-main .meta strong { color: #1C1C1E; }

/* Color / Size selectors */
.tool-page-main .clrs { display: flex; gap: 10px; flex-wrap: wrap; margin: 12px 0; }
.tool-page-main .clr { width: 36px; height: 36px; border-radius: 50%; border: 3px solid transparent; cursor: pointer; transition: all 0.2s; position: relative; }
.tool-page-main .clr:hover { transform: scale(1.1); }
.tool-page-main .clr.act { border-color: #007AFF; box-shadow: 0 0 0 2px rgba(0,122,255,0.3); }
.tool-page-main .clr.w { background: #fff; border-color: rgba(0,0,0,0.1); }
.tool-page-main .clr.b { background: #438edb; }
.tool-page-main .clr.r { background: #d32f2f; }
.tool-page-main .clr.g { background: #eee; }
.tool-page-main .szs { display: flex; gap: 8px; flex-wrap: wrap; margin: 12px 0; }
.tool-page-main .sz { padding: 8px 16px; border-radius: 10px; border: 0.5px solid rgba(0,0,0,0.08); background: rgba(255,255,255,0.6); font-size: 13px; cursor: pointer; transition: all 0.2s; }
.tool-page-main .sz:hover { background: rgba(0,122,255,0.06); }
.tool-page-main .sz.act { background: rgba(0,122,255,0.1); color: #007AFF; font-weight: 500; border-color: rgba(0,122,255,0.2); }
.tool-page-main .progress { height: 6px; background: #E5E5EA; border-radius: 3px; margin: 16px 0; overflow: hidden; }
.tool-page-main .progress-bar { height: 100%; background: #007AFF; border-radius: 3px; transition: width 0.3s; width: 0; }
.tool-page-main .sts { font-size: 14px; margin: 12px 0; padding: 12px 16px; border-radius: 10px; }
.tool-page-main .sts.ok { background: rgba(52,199,89,0.08); color: #34C759; }
.tool-page-main .sts.err { background: rgba(255,59,48,0.08); color: #FF3B30; }
.tool-page-main .sts.loading { background: rgba(0,122,255,0.06); color: #007AFF; }
.tool-page-main .pv { display: flex; gap: 16px; margin-top: 16px; flex-wrap: wrap; }
.tool-page-main .pv .pc { flex: 1; min-width: 200px; text-align: center; min-height: 180px; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.tool-page-main .pv .pc img { max-width: 100%; border-radius: 12px; border: 0.5px solid rgba(0,0,0,0.06); display: none; }
.tool-page-main .pv .pc img[src] { display: block; }
.tool-page-main .pv .m { font-size: 13px; color: #8E8E93; margin-top: 8px; }
.tool-page-main .pv .m strong { color: #1C1C1E; }
.tool-page-main .icon { font-size: 40px; margin-bottom: 12px; }
.tool-page-main .val { font-size: 13px; color: #007AFF; font-weight: 600; min-width: 36px; text-align: right; }

/* Regex */
.tool-page-main .pattern-row { display: flex; align-items: center; gap: 4px; margin-bottom: 12px; background: rgba(255,255,255,0.6); border: 0.5px solid rgba(0,0,0,0.08); border-radius: 12px; padding: 0 14px; }
.tool-page-main .pattern-row .slash { font-size: 18px; color: #C7C7CC; font-weight: 300; }
.tool-page-main .pattern-row input { flex: 1; border: none; background: transparent; padding: 14px 8px; font-size: 15px; font-family: "SF Mono", Menlo, monospace; outline: none; color: #1C1C1E; }
.tool-page-main .flags { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.tool-page-main .flags label { display: inline-flex; align-items: center; gap: 4px; font-size: 13px; color: #8E8E93; padding: 4px 10px; border-radius: 8px; cursor: pointer; transition: all 0.2s; }
.tool-page-main .flags label:has(input:checked) { background: rgba(0,122,255,0.08); color: #007AFF; font-weight: 500; }
.tool-page-main .flags input[type="checkbox"] { width: 16px; height: 16px; accent-color: #007AFF; }
.tool-page-main .field-label { font-size: 13px; font-weight: 500; color: #8E8E93; margin-bottom: 8px; display: block; }
.tool-page-main .highlight { background: rgba(255,255,255,0.6); border: 0.5px solid rgba(0,0,0,0.06); border-radius: 12px; padding: 16px; min-height: 80px; font-size: 14px; line-height: 1.8; white-space: pre-wrap; word-break: break-all; }
.tool-page-main .highlight mark { background: rgba(0,122,255,0.15); color: #1C1C1E; border-radius: 3px; padding: 1px 2px; }
.tool-page-main .match-list { margin-top: 12px; }
.tool-page-main .match-item { background: rgba(0,0,0,0.03); border-radius: 10px; padding: 12px; margin-bottom: 8px; }
.tool-page-main .match-item .index { font-size: 12px; color: #007AFF; font-weight: 600; margin-bottom: 4px; }
.tool-page-main .match-item .full { font-size: 13px; word-break: break-all; margin-bottom: 4px; }
.tool-page-main .match-item .group { font-size: 12px; color: #8E8E93; }

/* Checkbox in options */
.tool-page-main .options label:has(input[type="checkbox"]) { cursor: pointer; }
.tool-page-main .options input[type="checkbox"] { width: 18px; height: 18px; accent-color: #007AFF; }

/* Tool page mobile */
@media (max-width: 600px) {
    .tool-page-main .buttons { gap: 8px; }
    .tool-page-main .buttons .tool-btn, .tool-page-main .buttons button { flex: 1 1 calc(50% - 8px); min-width: 0; padding: 12px 16px; font-size: 15px; text-align: center; }
    .tool-page-main .info { padding: 16px; border-radius: 14px; }
    .tool-page-main .info h2 { font-size: 16px; }
    .tool-page-main .info p { font-size: 13px; line-height: 1.6; }
    .tool-page-main .stats { grid-template-columns: repeat(2, 1fr); }
    .tool-page-main .panes { grid-template-columns: 1fr; }
    .tool-page-main .previews { grid-template-columns: 1fr; }
    .tool-page-main .previews-3 { grid-template-columns: 1fr; }
    .tool-page-main canvas[id="histCanvas"] { height: 100px !important; }
    .tool-page-main .pv { flex-direction: column; }
    .tool-page-main .options { gap: 10px; }
    .tool-page-main .pattern-row { padding: 0 10px; }
    .tool-page-main .clrs { gap: 8px; }
    .tool-page-main .szs { gap: 6px; }
    .tool-page-main .sz { padding: 6px 12px; font-size: 12px; }
    .tool-page-main .drop-zone { padding: 28px 16px; }
    .tool-page-main .upload-area { padding: 28px 16px; }
}

/* ===== 工具页桌面端优化（全局） ===== */
@media (min-width: 768px) {
    .tool-page-main {
        max-width: 960px;
        margin: 28px auto 56px;
        padding: 40px 48px 48px;
        background: rgba(255, 255, 255, 0.82);
        backdrop-filter: blur(20px) saturate(180%);
        -webkit-backdrop-filter: blur(20px) saturate(180%);
        border: 0.5px solid rgba(0, 0, 0, 0.05);
        border-radius: 24px;
        box-shadow: 0 4px 28px rgba(0, 0, 0, 0.05);
    }
    .tool-page-title { font-size: 32px; margin-bottom: 10px; padding-top: 0; }
    .tool-page-main .desc { margin-bottom: 28px; }
    .tool-page-main .tool-card-main { padding: 24px 28px; background: rgba(0, 0, 0, 0.02); box-shadow: none; }
    .tool-page-main .info { margin-top: 24px; background: rgba(0, 0, 0, 0.03); }
    .tool-page-main .buttons { gap: 12px; margin-bottom: 8px; }
    .tool-page-main .options { display: flex; flex-wrap: wrap; gap: 16px 24px; }
    .tool-page-main .tool-input-group { margin-bottom: 24px; }
    .tool-page-main .preview-card { background: rgba(0, 0, 0, 0.02); }
}

/* ===== Favorite Button (global) ===== */
.fav-btn {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: none;
    background: rgba(0, 0, 0, 0.03);
    color: #C7C7CC;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    flex-shrink: 0;
    transition: all 0.2s ease;
    -webkit-tap-highlight-color: transparent;
}

.fav-btn:hover {
    color: #FF2D55;
    background: rgba(255, 45, 85, 0.1);
    transform: scale(1.08);
}

.fav-btn.active {
    color: #FF2D55;
    background: rgba(255, 45, 85, 0.1);
}

.fav-btn.active:hover {
    background: rgba(255, 45, 85, 0.2);
}

/* ===== Category Entry (homepage) ===== */
.tool-card .cat-arrow {
    color: #C7C7CC;
    font-size: 13px;
    flex-shrink: 0;
    transition: transform 0.2s ease, color 0.2s ease;
}

.tool-card:hover .cat-arrow {
    color: #007AFF;
    transform: translateX(2px);
}

/* ===== Category Page ===== */
.category-page-main {
    max-width: 760px;
    margin: 0 auto;
    padding: 40px 16px 64px;
}

.category-page-main .tool-page-title {
    text-align: center;
}

.category-page-main .category-desc {
    text-align: center;
    color: #8E8E93;
    font-size: 16px;
    margin: 8px 0 28px;
}

.tool-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.tool-row {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 18px;
    background: rgba(255, 255, 255, 0.78);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 0.5px solid rgba(0, 0, 0, 0.04);
    border-radius: 16px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.02);
    transition: all 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    animation: cardAppear 0.4s ease both;
}

.tool-row:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08), 0 0 0 0.5px rgba(0, 122, 255, 0.1);
    border-color: rgba(0, 122, 255, 0.1);
}

.tool-row:active {
    transform: translateY(0) scale(0.995);
    transition-duration: 0.1s;
}

.tool-row .tool-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    font-size: 18px;
}

.tool-row-info {
    flex: 1;
    min-width: 0;
}

.tool-row-info h3 {
    font-size: 16px;
    font-weight: 600;
    color: #1C1C1E;
    margin-bottom: 3px;
    letter-spacing: -0.2px;
}

.tool-row-info p {
    font-size: 13px;
    color: #8E8E93;
    line-height: 1.5;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

@media (max-width: 600px) {
    .category-page-main {
        padding: 28px 14px 48px;
    }

    .category-page-main .category-desc {
        font-size: 14px;
        margin-bottom: 20px;
    }

    .tool-list {
        gap: 10px;
    }

    .tool-row {
        padding: 12px 14px;
        border-radius: 14px;
        gap: 12px;
    }

    .tool-row .tool-icon {
        width: 38px;
        height: 38px;
        border-radius: 10px;
        font-size: 16px;
    }

    .tool-row-info h3 {
        font-size: 15px;
    }

    .tool-row-info p {
        font-size: 12px;
    }

    .fav-btn {
        width: 30px;
        height: 30px;
        font-size: 13px;
    }
}