/* ============================================================
   Image Tools Theme — Canva/Adobe Express 风格
   亮色创意 / 玫红橙渐变 / 柔软大圆角 / 暖色调
   ============================================================ */

:root, [data-theme="image-tools"] {
    /* —— 品牌主色：玫红橙（Canva/Adobe Express 风） —— */
    --color-primary: #F43F5E;
    --color-primary-hover: #E11D48;
    --color-primary-soft: #FFF1F2;
    --color-accent-pink: #FB923C;
    --color-accent-amber: #F59E0B;
    --color-accent-cyan: #06B6D4;
    --color-accent-violet: #F97316;

    /* —— 背景层级 —— */
    --color-bg: #FFFFFF;
    --color-bg-alt: #FFF8F5;
    --color-bg-soft: #FFF5F0;
    --color-text: #0F172A;
    --color-text-muted: #64748B;
    --color-border: #FFE4E6;
    --color-border-soft: #FFF0EE;

    --font-base: 'Inter', -apple-system, system-ui, sans-serif;
    --font-display: 'Inter', -apple-system, system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', Menlo, monospace;

    --text-base: 16px;
    --leading-base: 1.65;

    /* —— 圆角更大更柔 —— */
    --radius-sm: 10px;
    --radius-md: 18px;
    --radius-lg: 28px;
    --radius-pill: 999px;

    /* —— 彩色柔和阴影 —— */
    --shadow-card: 0 2px 8px rgba(244,63,94,.06), 0 1px 3px rgba(15,23,42,.04);
    --shadow-card-hover: 0 18px 40px -12px rgba(244,63,94,.25), 0 8px 16px -8px rgba(249,115,22,.12);
    --shadow-btn: 0 6px 18px -6px rgba(244,63,94,.45);

    /* —— 渐变 —— */
    --gradient-primary: linear-gradient(135deg, #F43F5E 0%, #F97316 50%, #FB923C 100%);
    --gradient-soft: linear-gradient(135deg, #FFF1F2 0%, #FCE7F3 50%, #FEF3C7 100%);
    --gradient-aurora: radial-gradient(ellipse 80% 50% at 20% 20%, rgba(249,115,22,.25), transparent 60%),
                       radial-gradient(ellipse 70% 50% at 80% 10%, rgba(244,63,94,.25), transparent 60%),
                       radial-gradient(ellipse 60% 50% at 50% 100%, rgba(245,158,11,.2), transparent 60%);

    --hero-bg: #FFFFFF;
    --hero-title-size: clamp(36px, 6vw, 64px);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-base);
    font-size: var(--text-base);
    line-height: var(--leading-base);
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================================
   导航：白底通透 + 滚动模糊
   ============================================================ */
.site-nav {
    background: rgba(255,255,255,.85);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid var(--color-border-soft);
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-container {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 2rem;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-brand { text-decoration: none; display: flex; align-items: center; gap: .55rem; }
.nav-logo { height: 32px; }
.nav-site-name {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: 800;
    font-size: 1.15rem;
    letter-spacing: -.02em;
}
.nav-links { display: flex; gap: 2rem; }
.nav-links a {
    text-decoration: none;
    color: var(--color-text-muted);
    font-size: .92rem;
    font-weight: 500;
    transition: color .2s;
    position: relative;
}
.nav-links a:hover { color: var(--color-primary); }
.nav-links a::after {
    content: '';
    position: absolute;
    left: 0; right: 0; bottom: -4px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .25s;
}
.nav-links a:hover::after { transform: scaleX(1); }

/* ============================================================
   Hero 覆盖（home-image-tools 模板内嵌 .it-hero 样式的增强）
   把深色 Hero 改成 Fotor 风亮色 + 极光彩色斑点
   ============================================================ */
.it-hero {
    background: var(--hero-bg) !important;
    padding: 5.5rem 2rem 4rem !important;
    position: relative;
    isolation: isolate;
    overflow: hidden;
}
.it-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-aurora);
    z-index: -1;
    pointer-events: none;
}
.it-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 1px 1px, rgba(244,63,94,.12) 1px, transparent 0);
    background-size: 28px 28px;
    mask-image: radial-gradient(ellipse 70% 50% at 50% 40%, black 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse 70% 50% at 50% 40%, black 30%, transparent 80%);
    z-index: -1;
    pointer-events: none;
}
.it-hero-grid-bg { display: none !important; }

.it-hero-inner { position: relative; max-width: 820px; margin: 0 auto; text-align: center; }

.it-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: .55rem;
    padding: .5rem 1.1rem !important;
    background: rgba(255,255,255,.85) !important;
    border: 1px solid var(--color-border) !important;
    border-radius: var(--radius-pill);
    font-size: .82rem !important;
    color: var(--color-text) !important;
    font-weight: 600;
    box-shadow: 0 2px 12px rgba(244,63,94,.08);
    margin-bottom: 1.75rem !important;
}
.it-badge-dot {
    width: 7px; height: 7px;
    background: #22C55E !important;
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(34,197,94,.18), 0 0 8px rgba(34,197,94,.6) !important;
    animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
    0%, 100% { box-shadow: 0 0 0 4px rgba(34,197,94,.18), 0 0 8px rgba(34,197,94,.6); }
    50%      { box-shadow: 0 0 0 8px rgba(34,197,94,.08), 0 0 12px rgba(34,197,94,.5); }
}

.it-hero-title {
    font-size: var(--hero-title-size) !important;
    font-weight: 900 !important;
    letter-spacing: -.035em !important;
    line-height: 1.05 !important;
    margin-bottom: 1.35rem !important;
    color: var(--color-text) !important;
    background: linear-gradient(135deg, #0F172A 0%, #F43F5E 45%, #FB923C 95%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.it-hero-subtitle {
    font-size: 1.15rem !important;
    color: var(--color-text-muted) !important;
    max-width: 600px;
    margin: 0 auto 2.25rem !important;
    line-height: 1.6 !important;
}

.it-hero-actions { gap: 1.25rem !important; }
.it-btn-primary {
    padding: 1rem 2.25rem !important;
    background: var(--gradient-primary) !important;
    background-size: 200% 200% !important;
    color: #fff !important;
    border-radius: var(--radius-pill) !important;
    font-weight: 700 !important;
    font-size: 1rem !important;
    box-shadow: var(--shadow-btn) !important;
    transition: background-position .35s ease, transform .15s ease, box-shadow .25s ease !important;
}
.it-btn-primary:hover {
    background-position: 100% 50% !important;
    transform: translateY(-2px) !important;
    box-shadow: 0 12px 28px -8px rgba(244,63,94,.55), 0 6px 16px -6px rgba(249,115,22,.35) !important;
}
.it-hero-meta {
    font-size: .88rem !important;
    color: var(--color-text-muted) !important;
    font-weight: 500;
}

/* ============================================================
   工具网格区
   ============================================================ */
.it-tools {
    background: linear-gradient(180deg, #FFFFFF 0%, var(--color-bg-alt) 100%) !important;
    padding: 3.5rem 2rem 6rem !important;
}
.it-tools-inner { max-width: 1320px !important; }

/* iLoveIMG 风：节头紧凑 + 居中标题 */
.it-section-head {
    align-items: center !important;
    justify-content: center !important;
    margin-bottom: 2.5rem !important;
    gap: .85rem !important;
    flex-wrap: wrap;
}
.it-section-title {
    font-size: 1.75rem !important;
    font-weight: 800 !important;
    letter-spacing: -.025em !important;
    color: var(--color-text) !important;
}
.it-section-count {
    background: var(--color-primary-soft) !important;
    color: var(--color-primary) !important;
    border: none !important;
    font-weight: 700 !important;
    font-size: .8rem !important;
    padding: .35rem .9rem !important;
    text-transform: uppercase;
    letter-spacing: .04em;
}

/* 3 列对齐网格 — 主屏稳定显示 */
.it-grid {
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 22px !important;
    max-width: 1100px;
    margin: 0 auto;
}
@media (max-width: 900px) { .it-grid { grid-template-columns: repeat(2, 1fr) !important; } }
@media (max-width: 560px) { .it-grid { grid-template-columns: 1fr !important; } }

/* iLoveIMG 风：白底大圆角、垂直居中、强调图标 */
.it-card {
    background: var(--color-bg) !important;
    border: 1px solid var(--color-border-soft) !important;
    border-radius: var(--radius-md) !important;
    padding: 1.75rem 1.25rem 1.5rem !important;
    box-shadow: var(--shadow-card) !important;
    transition: transform .25s cubic-bezier(.2,.8,.3,1.2), box-shadow .25s, border-color .2s !important;
    position: relative;
    overflow: hidden;
    text-align: center;
    align-items: center;
    gap: 1rem !important;
}
.it-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(244,63,94,.04) 0%, rgba(249,115,22,.04) 100%);
    opacity: 0;
    transition: opacity .25s;
    pointer-events: none;
}
.it-card:hover {
    transform: translateY(-6px) !important;
    box-shadow: var(--shadow-card-hover) !important;
    border-color: transparent !important;
}
.it-card:hover::before { opacity: 1; }

/* 顶部行：图标居中显示，箭头改为绝对定位浮在右上 */
.it-card-top {
    width: 100%;
    justify-content: center !important;
    position: relative;
}

/* 图标容器 — 透明承载已带渐变的 SVG，仅保留尺寸与浮起阴影 */
.it-card-icon {
    width: 72px !important; height: 72px !important;
    border-radius: var(--radius-md) !important;
    background: transparent !important;
    padding: 0 !important;
    transition: transform .3s cubic-bezier(.2,.8,.3,1.2);
    filter: drop-shadow(0 6px 14px rgba(244,63,94,.18));
}
.it-card-icon img { width: 100%; height: 100%; object-fit: contain; display: block; }
.it-card:hover .it-card-icon { transform: rotate(-4deg) scale(1.08); }

/* 箭头 — 默认隐藏，hover 时显示在右上角，更克制更工具感 */
.it-card-arrow {
    position: absolute !important;
    top: -2px; right: -2px;
    width: 26px; height: 26px;
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    border-radius: 50% !important;
    background: var(--gradient-primary) !important;
    color: #fff !important;
    font-size: .78rem !important;
    opacity: 0;
    transform: scale(.6);
    transition: opacity .2s, transform .2s !important;
}
.it-card:hover .it-card-arrow {
    opacity: 1;
    transform: scale(1);
}

.it-card-body { width: 100%; }
.it-card-name {
    font-size: 1.02rem !important;
    font-weight: 700 !important;
    letter-spacing: -.01em !important;
    color: var(--color-text) !important;
    margin-bottom: .45rem !important;
}
.it-card-desc {
    font-size: .82rem !important;
    color: var(--color-text-muted) !important;
    line-height: 1.55 !important;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ============================================================
   通用 Tool Card / Tool Page（其它页面使用）
   ============================================================ */
.tool-card {
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border-soft);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: inherit;
    box-shadow: var(--shadow-card);
    transition: box-shadow .25s, transform .25s, border-color .2s;
    position: relative;
    overflow: hidden;
}
.tool-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-4px);
    border-color: transparent;
}
.tool-card-icon {
    width: 56px; height: 56px; margin-bottom: 1rem;
    border-radius: var(--radius-sm);
    background: transparent;
    padding: 0;
    filter: drop-shadow(0 4px 10px rgba(244,63,94,.18));
}
.tool-card-icon img { width: 100%; height: 100%; object-fit: contain; }
.tool-card-name { font-size: 1rem; font-weight: 700; margin-bottom: .4rem; color: var(--color-text); letter-spacing: -.01em; }
.tool-card-desc { font-size: .875rem; color: var(--color-text-muted); line-height: 1.55; }

.tool-page { padding: 3rem 1.5rem; background: linear-gradient(180deg, #fff 0%, var(--color-bg-alt) 100%); min-height: 70vh; }
.tool-page-container { max-width: 880px; margin: 0 auto; }
.tool-title {
    font-size: 2.4rem;
    font-weight: 900;
    letter-spacing: -.025em;
    margin-bottom: .65rem;
    background: linear-gradient(135deg, #0F172A 0%, #F43F5E 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.tool-description { color: var(--color-text-muted); margin-bottom: 2rem; font-size: 1.05rem; }
.tool-body {
    background: var(--color-bg);
    border: 1px solid var(--color-border-soft);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-card);
}

/* ============================================================
   SEO / FAQ / Related / Static / Footer
   ============================================================ */
.seo-content { margin: 2rem 0; }
.seo-content h2 { font-size: 1.5rem; font-weight: 800; letter-spacing: -.015em; margin: 1.75rem 0 .85rem; color: var(--color-text); }
.seo-content p, .seo-content li { color: var(--color-text); margin-bottom: .75rem; }
.seo-content ul, .seo-content ol { padding-left: 1.5rem; margin-bottom: 1rem; }

.faq-section { margin: 2.5rem 0; }
.faq-section h2 { font-size: 1.5rem; font-weight: 800; letter-spacing: -.015em; margin-bottom: 1.25rem; }
.faq-item {
    background: var(--color-bg);
    border: 1px solid var(--color-border-soft);
    border-radius: var(--radius-md);
    margin-bottom: .6rem;
    overflow: hidden;
    transition: border-color .2s, box-shadow .2s;
}
.faq-item:hover { border-color: var(--color-border); }
.faq-item[open] { box-shadow: var(--shadow-card); border-color: var(--color-primary-soft); }
.faq-item summary {
    padding: 1.1rem 1.4rem;
    cursor: pointer;
    font-weight: 600;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
    content: '+';
    color: var(--color-primary);
    font-size: 1.3rem;
    font-weight: 400;
    transition: transform .2s;
    flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { padding: 0 1.4rem 1.2rem; color: var(--color-text-muted); }

.related-tools { margin: 2.5rem 0; }
.related-tools h2 { font-size: 1.5rem; font-weight: 800; letter-spacing: -.015em; margin-bottom: 1.25rem; }

.disclaimer {
    background: var(--gradient-soft);
    border: 1px solid var(--color-border-soft);
    border-radius: var(--radius-md);
    padding: 1.1rem 1.4rem;
    font-size: .9rem;
    color: var(--color-text);
    margin: 2rem 0;
}

.static-page { padding: 4rem 1.5rem; background: linear-gradient(180deg, #fff, var(--color-bg-alt)); }
.static-page-container { max-width: 820px; margin: 0 auto; }
.static-page-container h1 {
    font-size: 2.4rem;
    font-weight: 900;
    letter-spacing: -.025em;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #0F172A, #F43F5E);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.static-page-container h2 { font-size: 1.4rem; font-weight: 700; margin: 1.75rem 0 .85rem; }
.static-page-container p, .static-page-container li { margin-bottom: .8rem; line-height: 1.75; }
.static-page-container ul { padding-left: 1.5rem; }
.static-contact-email {
    margin-top: 1.5rem;
    padding: 1rem 1.25rem;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: .95rem;
}
.static-contact-email a { color: var(--color-primary); text-decoration: none; }
.static-contact-email a:hover { text-decoration: underline; }

/* Footer：浅米白 + 彩色品牌带 */
.site-footer {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border-soft);
    padding: 3rem 1.5rem 2rem;
    position: relative;
}
.site-footer::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--gradient-primary);
}
.footer-container { max-width: 1320px; margin: 0 auto; text-align: center; }
.footer-links { display: flex; gap: 1.75rem; justify-content: center; margin-bottom: 1.25rem; flex-wrap: wrap; }
.footer-links a { text-decoration: none; color: var(--color-text-muted); font-size: .9rem; font-weight: 500; transition: color .2s; }
.footer-links a:hover { color: var(--color-primary); }
.footer-copyright { font-size: .82rem; color: var(--color-text-muted); margin-top: .5rem; opacity: .75; }

.ad-slot { margin: 1.75rem 0; }

/* 404 / 错误页 */
.error-page { display: flex; align-items: center; justify-content: center; min-height: calc(100vh - 200px); padding: 3rem 1.5rem; }
.error-container { text-align: center; }
.error-container h1 {
    font-size: 7rem;
    font-weight: 900;
    line-height: 1;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.error-container p { font-size: 1.15rem; color: var(--color-text-muted); margin: 1.25rem 0 2rem; }
.btn-primary {
    display: inline-block;
    padding: .9rem 2rem;
    background: var(--gradient-primary);
    color: #fff;
    border-radius: var(--radius-pill);
    text-decoration: none;
    font-weight: 700;
    box-shadow: var(--shadow-btn);
    transition: transform .15s, box-shadow .25s;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px -8px rgba(244,63,94,.55); }

.no-tools { text-align: center; color: var(--color-text-muted); padding: 4rem; font-size: 1.05rem; }

.tools-section { padding: 3.5rem 1.5rem; }
.tools-container { max-width: 1280px; margin: 0 auto; }
.tools-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
@media (max-width: 768px) { .tools-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .tools-grid { grid-template-columns: 1fr; } }

/* ============================================================
   Tool UI — 表单 / 按钮 / 拖放 / 预览 / 输出
   ============================================================ */
.tool-section   { margin-bottom: 22px; }
.tool-row       { display: flex; gap: 14px; flex-wrap: wrap; align-items: flex-end; margin-bottom: 18px; }
.tool-field     { display: flex; flex-direction: column; gap: 6px; flex: 1 1 140px; min-width: 0; }

.tool-label {
    display: block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .07em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: 6px;
}
.tool-hint { font-size: 12.5px; color: var(--color-text-muted); margin-top: 4px; line-height: 1.55; }

.tool-input,
.tool-textarea {
    display: block;
    width: 100%;
    padding: 11px 14px;
    background: var(--color-bg);
    color: var(--color-text);
    border: 1.5px solid var(--color-border-soft);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    line-height: 1.55;
    transition: border-color .18s, box-shadow .18s;
    box-sizing: border-box;
    min-width: 0;
}
.tool-textarea { padding: 12px 14px; resize: vertical; line-height: 1.65; }
.tool-input:focus,
.tool-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(244,63,94,.12);
}
.tool-range { width: 100%; cursor: pointer; accent-color: var(--color-primary); }
.tool-mono  { font-family: var(--font-mono); font-size: 13px; }

/* 按钮 */
.tool-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 11px 22px;
    border: none;
    border-radius: var(--radius-pill);
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
    transition: transform .12s, box-shadow .2s, filter .15s, background-position .35s ease;
    box-sizing: border-box;
}
.tool-btn:active { transform: scale(.97); }

.tool-btn-primary {
    background: var(--gradient-primary);
    background-size: 200% 200%;
    color: #fff;
    box-shadow: var(--shadow-btn);
}
.tool-btn-primary:hover {
    background-position: 100% 50%;
    transform: translateY(-1px);
    box-shadow: 0 10px 24px -8px rgba(244,63,94,.5);
}
.tool-btn-secondary {
    background: var(--color-bg);
    color: var(--color-text);
    border: 1.5px solid var(--color-border);
}
.tool-btn-secondary:hover { border-color: var(--color-primary); color: var(--color-primary); background: var(--color-primary-soft); }
.tool-btn-ghost {
    background: transparent;
    color: var(--color-text-muted);
    border: 1.5px solid var(--color-border-soft);
}
.tool-btn-ghost:hover { color: var(--color-text); border-color: var(--color-text-muted); }
.tool-btn-group { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 18px; align-items: center; }

.tool-link { background: none; border: none; color: var(--color-primary); cursor: pointer; font-size: inherit; text-decoration: underline; padding: 0; font-family: inherit; }
.tool-link:hover { color: var(--color-primary-hover); }

/* 错误提示 */
.tool-error {
    background: #FEF2F2;
    border: 1.5px solid #FCA5A5;
    color: #B91C1C;
    border-radius: var(--radius-sm);
    padding: 11px 14px;
    font-size: 13px;
    margin-bottom: 12px;
}

/* 结果框 */
.tool-result-box {
    background: var(--color-bg-soft);
    border: 1.5px solid var(--color-border-soft);
    border-radius: var(--radius-sm);
    padding: 13px 14px;
    font-size: 14px;
    line-height: 1.6;
    word-break: break-all;
}

/* 统计格子 */
.tool-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 14px;
    margin: 18px 0;
}
.tool-stat {
    background: var(--color-bg);
    border: 1px solid var(--color-border-soft);
    border-radius: var(--radius-md);
    padding: 18px 12px;
    text-align: center;
    box-shadow: var(--shadow-card);
    transition: transform .2s, box-shadow .2s;
}
.tool-stat:hover { transform: translateY(-2px); box-shadow: var(--shadow-card-hover); }
.tool-stat span {
    display: block;
    font-size: 28px;
    font-weight: 800;
    line-height: 1.15;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.tool-stat label { display: block; font-size: 12px; color: var(--color-text-muted); margin-top: 4px; font-weight: 600; }

.tool-stat-hero { margin-bottom: 22px; }
.tool-stat-big {
    font-size: 40px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-family: var(--font-mono);
    letter-spacing: .03em;
}

/* ============================================================
   图片拖放区 — Fotor 标志性大圆角彩边
   ============================================================ */
.tool-dropzone {
    position: relative;
    border: 2px dashed transparent;
    border-radius: var(--radius-lg);
    padding: 56px 24px;
    text-align: center;
    cursor: pointer;
    transition: transform .2s, background .2s;
    margin-bottom: 18px;
    background:
        linear-gradient(var(--color-bg-soft), var(--color-bg-soft)) padding-box,
        var(--gradient-primary) border-box;
    color: var(--color-text);
    font-size: 14px;
    overflow: hidden;
}
.tool-dropzone::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-aurora);
    opacity: .35;
    z-index: 0;
    pointer-events: none;
    transition: opacity .25s;
}
.tool-dropzone > * { position: relative; z-index: 1; }
.tool-dropzone:hover { transform: translateY(-2px); }
.tool-dropzone:hover::before { opacity: .55; }
.tool-dropzone.drag-over {
    background:
        linear-gradient(rgba(255,255,255,.6), rgba(255,255,255,.6)) padding-box,
        var(--gradient-primary) border-box;
    transform: scale(1.01);
}

/* 图片预览 */
.tool-preview-wrap { margin-bottom: 18px; }
.tool-preview-img {
    max-width: 100%;
    max-height: 320px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-soft);
    box-shadow: var(--shadow-card);
    display: block;
    margin-bottom: 10px;
}
.tool-preview-info { font-size: 13px; color: var(--color-text-muted); margin-bottom: 12px; }

/* 比较布局（图片压缩 before/after） */
.tool-compare { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 18px; }
@media (max-width: 600px) { .tool-compare { grid-template-columns: 1fr; } }

/* Diff */
.tool-diff-inputs { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 18px; }
@media (max-width: 640px) { .tool-diff-inputs { grid-template-columns: 1fr; } }
.tool-diff-output {
    background: var(--color-bg);
    border: 1.5px solid var(--color-border-soft);
    border-radius: var(--radius-md);
    padding: 16px;
    font-size: 14px;
    line-height: 1.85;
    white-space: pre-wrap;
    word-break: break-word;
    max-height: 420px;
    overflow: auto;
}
.tool-diff-output ins { background: #D1FAE5; color: #065F46; text-decoration: none; border-radius: 3px; padding: 0 3px; }
.tool-diff-output del { background: #FEE2E2; color: #991B1B; border-radius: 3px; padding: 0 3px; }
.tool-diff-summary { font-size: 13px; color: var(--color-text-muted); margin-top: 8px; }

/* Hash 行 */
.tool-hash-results { display: flex; flex-direction: column; gap: 10px; }
.tool-hash-row { display: flex; align-items: center; gap: 8px; min-width: 0; }
.tool-hash-label { font-size: 12px; font-weight: 700; color: var(--color-text-muted); width: 68px; flex-shrink: 0; }
.tool-hash-row .tool-input { flex: 1; min-width: 0; font-size: 12px; }
.tool-copy-btn {
    flex-shrink: 0;
    padding: 9px 14px;
    border-radius: var(--radius-pill);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    border: 1.5px solid var(--color-border);
    background: var(--color-bg);
    color: var(--color-text);
    font-family: inherit;
    transition: all .18s;
}
.tool-copy-btn:hover { border-color: var(--color-primary); color: var(--color-primary); background: var(--color-primary-soft); }

/* 单位转换格子 */
.tool-unit-grid { display: flex; flex-direction: column; gap: 12px; }
.tool-unit-row { display: flex; align-items: center; gap: 12px; }
.tool-unit-label { font-size: 13px; color: var(--color-text-muted); width: 220px; flex-shrink: 0; line-height: 1.4; }
.tool-unit-row .tool-input { flex: 1; min-width: 0; }
@media (max-width: 560px) { .tool-unit-label { width: 130px; font-size: 12px; } }

/* 正则高亮 */
.tool-highlight-box {
    background: var(--color-bg-soft);
    border: 1.5px solid var(--color-border-soft);
    border-radius: var(--radius-md);
    padding: 14px;
    overflow-x: auto;
    max-height: 380px;
    overflow-y: auto;
}
.tool-highlight-box pre { margin: 0; font-size: 14px; line-height: 1.7; white-space: pre-wrap; word-break: break-word; font-family: inherit; }
.rx-match { background: #FEF08A; color: #713F12; border-radius: 3px; padding: 0 3px; }

/* 表格 */
.tool-table { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 8px; border-radius: var(--radius-sm); overflow: hidden; }
.tool-table th { background: var(--color-primary-soft); color: var(--color-primary); font-weight: 700; text-align: left; }
.tool-table th, .tool-table td { padding: 10px 14px; border: 1px solid var(--color-border-soft); vertical-align: top; }
.tool-table tr:nth-child(even) td { background: var(--color-bg-alt); }

/* 关键词密度条 */
.kd-bar {
    height: 8px;
    background: var(--gradient-primary);
    border-radius: 4px;
    min-width: 4px;
    max-width: 100%;
    opacity: .85;
}

/* SEO 建议框 */
.seo-advice-box {
    background: var(--gradient-soft);
    border: 1px solid var(--color-border-soft);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    font-size: 14px;
}
.advice-warn { color: #92400E; font-weight: 600; }
.advice-info { color: #1E40AF; font-weight: 600; }
.advice-ok   { color: #065F46; font-weight: 600; }
.advice-best { color: #5B21B6; font-weight: 700; }

/* 长度徽章 */
.len-badge { display: inline-block; font-size: 12px; font-weight: 600; padding: 3px 11px; border-radius: var(--radius-pill); margin-top: 6px; }
.len-ok    { background: #D1FAE5; color: #065F46; }
.len-short { background: #FEF3C7; color: #92400E; }
.len-long  { background: #FEE2E2; color: #991B1B; }
.len-empty { background: #F3F4F6; color: #6B7280; }

/* OG 预览卡 */
.og-card {
    border: 1px solid var(--color-border-soft);
    border-radius: var(--radius-md);
    overflow: hidden;
    max-width: 540px;
    margin-bottom: 18px;
    background: var(--color-bg);
    box-shadow: var(--shadow-card);
}
.og-card-body { padding: 14px 18px; }
.og-site  { font-size: 11px; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 4px; }
.og-title { font-size: 15px; font-weight: 700; color: var(--color-text); margin-bottom: 4px; }
.og-desc  { font-size: 13px; color: var(--color-text-muted); line-height: 1.55; }

.tool-meta-field { margin-bottom: 22px; }