/* ============================================================================
   croptool.net 站点样式 V3 —— 全站视觉改版
   设计语言：深靛蓝→天蓝渐变 · 明亮大气 · 全宽 1280 · 纯 CSS（无框架）
   兼容：保留编辑器页依赖的 CSS 变量名（--pink/--ink/--line/--muted 等别名），
         让 editor.css 自动跟随新品牌色，编辑器功能代码零改动。
   ============================================================================ */
:root{
  /* —— 基础色板 —— */
  --bg:#f5f7fe;
  --bg-deep:#edf1fc;
  --card:#ffffff;
  --ink:#182540;          /* 主文字（深藏青） */
  --ink-2:#46536f;        /* 次级文字 */
  --ink-3:#5e6c88;        /* 弱提示文字（AA 对比度） */
  --line:#e4eaf7;
  --line-strong:#d6def1;

  /* —— 品牌 —— */
  --brand:#4f46e5;
  --brand-strong:#4338ca;
  --brand-soft:#eef0fe;
  --sky:#0ea5e9;
  --teal:#06b6d4;
  --violet:#7c3aed;
  --amber:#f59e0b;
  --grad-main:linear-gradient(115deg,#4338ca 0%,#6366f1 46%,#0ea5e9 100%);
  --grad-soft:linear-gradient(120deg,#eef0fe 0%,#e6f2fe 100%);
  --grad-dark:linear-gradient(128deg,#1e1b4b 0%,#3730a3 52%,#0b5a8a 100%);

  /* —— 阴影 / 圆角 —— */
  --shadow-sm:0 1px 2px rgba(24,37,64,.05),0 2px 8px -2px rgba(24,37,64,.06);
  --shadow-md:0 10px 28px -14px rgba(35,43,96,.22),0 2px 8px -3px rgba(24,37,64,.05);
  --shadow-lg:0 24px 56px -22px rgba(35,43,96,.35);
  --radius:18px;
  --radius-sm:12px;
  --radius-lg:26px;

  --content-w:1280px;
  --font-sans:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-heading:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;

  /* —— 旧变量别名（内容页组件 + 编辑器依赖，勿删） —— */
  --background:var(--bg);
  --foreground:var(--ink);
  --card-color:var(--card);
  --primary:var(--brand);
  --primary-strong:var(--brand-strong);
  --accent:var(--sky);
  --success:#16a34a;
  --border:var(--line);
  --gradient-primary:var(--grad-main);
  --shadow-card:var(--shadow-md);
  --muted:var(--brand-soft);
  --muted-fg:var(--ink-2);
  /* 编辑器专用旧变量（原为糖果粉，现映射到品牌蓝） */
  --pink:#cfd6ff;
  --pink-strong:#4f46e5;
  --line-e:#e4eaf7;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-sans);
  background:var(--bg);
  color:var(--ink);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
::selection{background:rgba(99,102,241,.22)}
h1,h2,h3,h4{font-family:var(--font-heading);line-height:1.35;letter-spacing:.2px}

.wrap{max-width:var(--content-w);margin:0 auto;padding:0 22px}
.container{max-width:1180px;margin:0 auto;padding:0 22px}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ============================================================================
   顶部导航（66px 固定高，编辑器页依赖此高度）
   ============================================================================ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:18px;height:66px}
.brand{display:flex;align-items:center;gap:10px;margin-right:6px;flex:0 0 auto}
.brand-mark{width:34px;height:34px;flex:0 0 auto}
.brand-mark svg{width:100%;height:100%;display:block;filter:drop-shadow(0 3px 6px rgba(67,56,202,.28))}
.brand-tx{display:flex;flex-direction:column;line-height:1.12}
.brand-tx b{font-family:var(--font-heading);font-size:19px;font-weight:800;color:var(--ink);letter-spacing:2px}
.brand-tx b em{font-style:normal;color:var(--brand)}
.brand-tx i{font-style:normal;font-size:11px;color:var(--ink-3);white-space:nowrap;margin-top:2px}

/* 桌面导航 */
.desk-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.desk-nav > a,.desk-nav .drop-a{
  display:inline-flex;align-items:center;gap:5px;
  padding:8px 14px;border-radius:999px;font-size:15px;font-weight:500;color:var(--ink-2);
  transition:background .16s,color .16s;white-space:nowrap;
}
.desk-nav > a:hover,.desk-nav .drop:hover .drop-a,.desk-nav a.on{background:var(--brand-soft);color:var(--brand-strong)}
.desk-nav > a.on{font-weight:700}
.desk-nav .drop{position:relative}
.drop-arrow{width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;border-top:5px solid currentColor;margin-top:2px;opacity:.6}
.drop-menu{
  position:absolute;top:calc(100% + 8px);left:50%;transform:translateX(-50%) translateY(6px);
  min-width:232px;background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--shadow-lg);padding:8px;opacity:0;visibility:hidden;
  transition:opacity .18s,transform .18s,visibility .18s;z-index:90;
}
.drop-menu::before{content:"";position:absolute;top:-12px;left:0;right:0;height:12px}
.drop:hover .drop-menu,.drop:focus-within .drop-menu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.drop-menu a{
  display:flex;align-items:center;gap:9px;padding:9px 11px;border-radius:11px;font-size:14px;color:var(--ink-2);
}
.drop-menu a:hover{background:var(--brand-soft);color:var(--brand-strong)}
.drop-menu a .d-ic{width:30px;height:30px;border-radius:9px;background:var(--grad-soft);display:flex;align-items:center;justify-content:center;font-size:16px;flex:0 0 auto}
.drop-menu a b{font-size:13.5px;font-weight:600;color:var(--ink)}
.drop-menu a small{display:block;font-size:11.5px;color:var(--ink-3);line-height:1.35}

.nav-cta{margin-left:10px;flex:0 0 auto}

/* 移动端汉堡（<details> 纯 CSS 开关，零 JS） */
.mnav{display:none;margin-left:auto}
.mnav summary{
  list-style:none;cursor:pointer;width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line);background:#fff;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:4.5px;
  transition:border-color .15s,box-shadow .15s;
}
.mnav summary::-webkit-details-marker{display:none}
.mnav summary:hover{border-color:var(--brand);box-shadow:var(--shadow-sm)}
.mnav summary span{width:17px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s,opacity .2s}
.mnav[open] summary span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.mnav[open] summary span:nth-child(2){opacity:0}
.mnav[open] summary span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
.mnav-panel{
  position:fixed;top:66px;left:0;right:0;z-index:79;max-height:calc(100dvh - 66px);overflow-y:auto;
  background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg);
  padding:14px 22px 20px;display:flex;flex-direction:column;gap:2px;
}
.mnav-panel a{
  padding:12px 14px;border-radius:12px;font-size:16px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;
}
.mnav-panel a:hover{background:var(--brand-soft);color:var(--brand-strong)}
.mnav-panel a .m-sub{font-size:12px;font-weight:500;color:var(--ink-3)}
.mnav-panel .mnav-group-title{font-size:12px;color:var(--ink-3);margin:12px 8px 2px;letter-spacing:1.5px;font-weight:600}
.mnav-panel .btn{margin-top:14px}
.mnav-sep{height:1px;background:var(--line);margin:8px 0}

/* ============================================================================
   按钮 / 徽章
   ============================================================================ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 28px;border-radius:999px;font-weight:700;font-size:16px;
  background:var(--grad-main);color:#fff;border:0;cursor:pointer;white-space:nowrap;
  box-shadow:0 10px 22px -10px rgba(67,56,202,.55);
  transition:transform .16s,box-shadow .16s,filter .16s;
}
.btn:hover{transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 16px 30px -12px rgba(67,56,202,.6)}
.btn:active{transform:translateY(0)}
.btn.ghost{background:#fff;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--line-strong)}
.btn.ghost:hover{border:none;box-shadow:inset 0 0 0 1.5px var(--brand);filter:none}
.btn.sm{padding:7px 16px;font-size:14px;border-radius:999px}
.btn.lg{padding:15px 34px;font-size:17.5px}
.btn.block{width:100%}
.btn .ar{transition:transform .16s}
.btn:hover .ar{transform:translateX(3px)}

.chip{
  display:inline-flex;align-items:center;gap:7px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:7px 15px;font-size:13.5px;font-weight:600;color:var(--ink-2);
  box-shadow:var(--shadow-sm);
}
.chip .c-dot{width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 3px rgba(99,102,241,.18)}
.chip.green .c-dot{background:#16a34a;box-shadow:0 0 0 3px rgba(22,163,74,.16)}
.chip.teal .c-dot{background:#06b6d4;box-shadow:0 0 0 3px rgba(6,182,212,.16)}

/* ============================================================================
   首页 Hero（全宽渐变 + 纯 CSS 工具窗口示意）
   ============================================================================ */
.home-hero{position:relative;overflow:hidden;padding:66px 0 80px}
.home-hero .bg-deco{position:absolute;inset:0;pointer-events:none}
.home-hero .bg-deco::before,.home-hero .bg-deco::after{
  content:"";position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;
}
.home-hero .bg-deco::before{width:520px;height:520px;left:-140px;top:-160px;background:radial-gradient(circle,#c7d2fe,transparent 65%)}
.home-hero .bg-deco::after{width:640px;height:640px;right:-180px;bottom:-240px;background:radial-gradient(circle,#bae6fd,transparent 65%)}
.home-hero .bg-grid{
  position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:linear-gradient(rgba(99,102,241,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(99,102,241,.05) 1px,transparent 1px);
  background-size:42px 42px;
  mask-image:radial-gradient(ellipse 90% 78% at 50% 0%,#000 30%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 90% 78% at 50% 0%,#000 30%,transparent 78%);
}
.hero-inner{position:relative;text-align:center}
.kicker-pill{
  display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:7px 16px;font-size:13.5px;font-weight:600;color:var(--ink-2);
  box-shadow:var(--shadow-sm);
}
.kicker-pill .k-dot{width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,#6366f1,#0ea5e9)}
.home-hero h1{
  max-width:880px;margin:22px auto 0;font-size:clamp(34px,5.4vw,62px);
  font-weight:800;line-height:1.22;letter-spacing:.5px;
}
.home-hero h1 .grad{background:var(--grad-main);-webkit-background-clip:text;background-clip:text;color:transparent}
.home-hero .lead{
  max-width:700px;margin:18px auto 0;color:var(--ink-2);font-size:clamp(16px,1.7vw,19px);line-height:1.9;
}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:32px}
.hero-chips{display:flex;gap:9px;justify-content:center;flex-wrap:wrap;margin-top:26px}

/* —— CSS 工具窗口示意 —— */
.tool-window{
  position:relative;max-width:980px;margin:52px auto 0;background:#fff;
  border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow-lg);
  overflow:hidden;text-align:left;
}
.tw-bar{display:flex;align-items:center;gap:8px;padding:13px 18px;border-bottom:1px solid var(--line);background:#fbfcff}
.tw-dot{width:11px;height:11px;border-radius:50%}
.tw-bar .tw-addr{
  margin-left:12px;flex:0 1 auto;display:inline-flex;align-items:center;gap:7px;
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:4px 14px;
  font-size:12.5px;color:var(--ink-3);
}
.tw-addr .lock{color:var(--success);font-size:11px}
.tw-bar .tw-tag{margin-left:auto;font-size:11.5px;color:var(--ink-3);display:inline-flex;gap:5px;align-items:center}
.tw-body{display:grid;grid-template-columns:1.55fr 1fr;background:linear-gradient(180deg,#f7f9ff,#f2f5fd)}
.tw-canvas{position:relative;min-height:320px;overflow:hidden}
.mock-img{position:absolute;inset:20px;border-radius:16px;overflow:hidden}
.mock-img .ph{
  position:absolute;inset:0;
  background:
    radial-gradient(120px 100px at 22% 28%,#c7d2fe 0,transparent 60%),
    radial-gradient(150px 120px at 74% 22%,#a5f3fc 0,transparent 60%),
    radial-gradient(180px 150px at 30% 82%,#fbcfe8 0,transparent 62%),
    radial-gradient(160px 140px at 80% 80%,#e9d5ff 0,transparent 60%),
    linear-gradient(150deg,#eef2ff,#f0f9ff);
}
.mock-img .crop{
  position:absolute;left:20%;top:17%;width:60%;height:66%;
  border:2.5px solid #fff;border-radius:6px;
  box-shadow:0 0 0 2000px rgba(24,37,64,.44),0 0 0 1px rgba(255,255,255,.3);
}
.mock-img .crop i{
  position:absolute;width:13px;height:13px;border:2.5px solid #fff;border-radius:4px;
  background:linear-gradient(135deg,#6366f1,#0ea5e9);
}
.mock-img .crop i:nth-child(1){left:-7px;top:-7px}
.mock-img .crop i:nth-child(2){right:-7px;top:-7px}
.mock-img .crop i:nth-child(3){left:-7px;bottom:-7px}
.mock-img .crop i:nth-child(4){right:-7px;bottom:-7px}
.mock-img .crop em{
  position:absolute;top:-32px;right:0;font-style:normal;background:rgba(24,37,64,.8);color:#fff;
  font-size:11px;border-radius:7px;padding:3px 9px;letter-spacing:.5px;white-space:nowrap;
}
.tw-toolrow{
  position:absolute;left:20px;right:20px;bottom:18px;display:flex;gap:6px;flex-wrap:wrap;justify-content:center;
}
.tw-toolrow span{font-size:12px;background:#fff;border:1px solid var(--line);border-radius:8px;padding:4px 10px;color:var(--ink-2);box-shadow:var(--shadow-sm)}
.tw-panel{padding:26px 24px;display:flex;flex-direction:column;gap:16px;justify-content:center;border-left:1px solid var(--line)}
.tw-group h5{font-size:12px;color:var(--ink-3);font-weight:700;letter-spacing:1px;margin-bottom:8px;display:flex;align-items:center;gap:6px}
.tw-group h5::after{content:"";flex:1;height:1px;background:var(--line)}
.tw-ratios{display:flex;flex-wrap:wrap;gap:6px}
.tw-ratios span{font-size:12px;background:#fff;border:1px solid var(--line);border-radius:8px;padding:4px 10px;color:var(--ink-2);font-weight:600}
.tw-ratios span.on{background:var(--grad-main);color:#fff;border-color:transparent;box-shadow:0 5px 12px -5px rgba(67,56,202,.55)}
.tw-btns{display:flex;gap:8px}
.tw-btns .btn{flex:1;padding:9px 8px;font-size:13.5px;border-radius:10px}
.tw-btns .btn.ghost{flex:1.4}
.tw-note{font-size:12px;color:var(--ink-3);text-align:center}

/* ============================================================================
   通用区块
   ============================================================================ */
.band{padding:clamp(52px,7vw,84px) 0;position:relative}
.band.soft{background:var(--grad-soft)}
.band.tint{background:var(--bg-deep)}
.band.plain{background:var(--bg)}
.sec-head{text-align:center;max-width:760px;margin:0 auto 46px}
.sec-head .kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  letter-spacing:2.5px;color:var(--brand);text-transform:uppercase;
}
.sec-head .kicker::before,.sec-head .kicker::after{content:"";width:22px;height:1.5px;background:var(--grad-main);border-radius:2px}
.sec-head h2{font-size:clamp(26px,3.4vw,38px);font-weight:800;margin-top:12px}
.sec-head .sec-lead{color:var(--ink-2);font-size:16px;margin-top:12px}

/* 功能特性卡片 */
.grid{display:grid;gap:18px}
.grid.c3{grid-template-columns:repeat(auto-fit,minmax(255px,1fr))}
.grid.c4{grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.grid.c2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow-sm);position:relative;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.card .ic{
  width:50px;height:50px;border-radius:15px;display:flex;align-items:center;justify-content:center;
  font-size:25px;margin-bottom:16px;background:var(--grad-soft);
  box-shadow:inset 0 0 0 1px rgba(99,102,241,.12);
}
.card h3{font-size:17.5px;font-weight:700;margin-bottom:8px;color:var(--ink)}
.card p{font-size:14.5px;color:var(--ink-2);line-height:1.75}
.grid.c3 .card:nth-child(3n+2) .ic{background:linear-gradient(120deg,#e0f2fe,#e6f6fb);box-shadow:inset 0 0 0 1px rgba(14,165,233,.14)}
.grid.c3 .card:nth-child(3n) .ic{background:linear-gradient(120deg,#ecfeff,#f0fdfa);box-shadow:inset 0 0 0 1px rgba(6,182,212,.14)}

/* 场景入口卡（链接） */
.scene-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px}
.scene-link{
  display:flex;align-items:center;gap:15px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow-sm);
  transition:transform .18s,box-shadow .18s;position:relative;
}
.scene-link:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.scene-link .s-ic{
  width:52px;height:52px;flex:0 0 auto;border-radius:15px;display:flex;align-items:center;justify-content:center;
  font-size:26px;background:var(--grad-soft);box-shadow:inset 0 0 0 1px rgba(99,102,241,.12);
}
.scene-grid .scene-link:nth-child(3n+2) .s-ic{background:linear-gradient(120deg,#e0f2fe,#ecfeff)}
.scene-grid .scene-link:nth-child(3n) .s-ic{background:linear-gradient(120deg,#fae8ff,#eef0fe)}
.scene-link .s-tx{min-width:0;flex:1}
.scene-link .s-tx b{display:block;font-size:16px;font-weight:700;color:var(--ink)}
.scene-link .s-tx span{display:block;font-size:13px;color:var(--ink-3);margin-top:2px;line-height:1.5}
.scene-link .s-go{
  width:30px;height:30px;flex:0 0 auto;border-radius:50%;background:var(--brand-soft);color:var(--brand-strong);
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;
  transition:background .15s,color .15s,transform .15s;
}
.scene-link:hover .s-go{background:var(--brand);color:#fff;transform:translateX(2px)}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(168px,1fr));gap:14px;counter-reset:step}
.step-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 18px 20px;
  text-align:center;position:relative;box-shadow:var(--shadow-sm);
  transition:transform .18s,box-shadow .18s;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.step-card::before{
  content:"";position:absolute;top:0;left:24px;right:24px;height:3px;border-radius:0 0 4px 4px;
  background:var(--grad-main);opacity:0;transition:opacity .2s;
}
.step-card:hover::before{opacity:1}
.step-card .num{
  width:34px;height:34px;margin:0 auto 14px;border-radius:11px;
  background:var(--grad-main);color:#fff;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:16px;box-shadow:0 6px 14px -6px rgba(67,56,202,.55);
}
.step-card h3{font-size:15.5px;margin-bottom:7px}
.step-card p{font-size:13px;color:var(--ink-2);line-height:1.7}

/* 首页 SEO 长文区 */
.seo-block{max-width:880px;margin:0 auto;color:var(--ink-2)}
.seo-block h2{font-size:22px;color:var(--ink);margin:26px 0 10px;font-weight:800}
.seo-block p{margin:12px 0;font-size:15px;line-height:1.95}
.seo-block strong{color:var(--ink)}

/* ============================================================================
   内页头部（面包屑 + 标题条）
   ============================================================================ */
.page-band{position:relative;overflow:hidden;padding:38px 0 30px;background:var(--grad-soft)}
.page-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(340px 260px at 12% 8%,rgba(99,102,241,.10),transparent 62%),
    radial-gradient(420px 300px at 92% 30%,rgba(14,165,233,.10),transparent 60%);
}
.breadcrumb{position:relative;font-size:13px;color:var(--ink-3);display:flex;align-items:center;flex-wrap:wrap;gap:2px}
.breadcrumb a{color:var(--ink-3);transition:color .15s}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--line-strong);margin:0 5px;font-size:12px}
.breadcrumb .cur{color:var(--ink-2);font-weight:600}
.page-band h1{
  position:relative;font-size:clamp(26px,3.6vw,40px);font-weight:800;margin-top:14px;line-height:1.3;
}
.page-band .lead{position:relative;max-width:820px;margin-top:12px;color:var(--ink-2);font-size:16.5px;line-height:1.9}
.page-band .cta-row{position:relative;margin-top:22px;display:flex;gap:12px;flex-wrap:wrap}

/* ============================================================================
   文章正文排版
   ============================================================================ */
.page-article{padding:clamp(30px,5vw,54px) 0 8px}
.page-article .prose{max-width:880px;margin:0 auto}
.prose h2{
  font-size:clamp(21px,2.6vw,26px);font-weight:800;margin:44px 0 16px;color:var(--ink);
  display:flex;align-items:center;gap:12px;
}
.prose h2::before{content:"";width:5px;height:1.1em;border-radius:4px;background:var(--grad-main);flex:0 0 auto}
.prose h2:first-child{margin-top:6px}
.prose h3{font-size:19px;font-weight:700;margin:30px 0 10px;color:var(--ink)}
.prose p{margin:13px 0;line-height:1.95;color:var(--ink-2)}
.prose ul,.prose ol{margin:14px 0;padding-left:4px;list-style:none}
.prose ul li,.prose ol li{position:relative;padding:6px 0 6px 30px;color:var(--ink-2);line-height:1.85;margin:0}
.prose ul li::before{
  content:"";position:absolute;left:6px;top:16px;width:9px;height:9px;border-radius:3px;
  background:linear-gradient(135deg,#6366f1,#0ea5e9);
}
.prose ol{counter-reset:li}
.prose ol li{counter-increment:li;padding-left:40px}
.prose ol li::before{
  content:counter(li);position:absolute;left:0;top:7px;width:25px;height:25px;border-radius:9px;
  background:var(--brand-soft);color:var(--brand-strong);font-size:12.5px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
}
.prose strong{color:var(--ink)}
.prose table{
  width:100%;border-collapse:separate;border-spacing:0;margin:20px 0;font-size:14.5px;
  background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  box-shadow:var(--shadow-sm);
}
.prose th{
  background:linear-gradient(120deg,#eef0fe,#f0f6ff);text-align:left;padding:12px 14px;
  font-weight:700;color:var(--ink);border-bottom:1px solid var(--line);font-size:14px;
}
.prose td{padding:12px 14px;border-bottom:1px solid #eef1f8;vertical-align:top;color:var(--ink-2)}
.prose tr:last-child td{border-bottom:0}
.prose tr:hover td{background:#f8faff}
.prose .tip,.prose .note{
  border-radius:14px;padding:16px 20px 16px 56px;margin:20px 0;position:relative;
  font-size:14.5px;line-height:1.85;border:1px solid;
}
.prose .tip{background:#eef7ff;border-color:#d3ecff;color:#155e8a}
.prose .tip::before,.prose .note::before{
  content:"!";position:absolute;left:16px;top:14px;width:26px;height:26px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:13px;
}
.prose .tip::before{background:#0ea5e9;color:#fff}
.prose .note{background:#f4f2ff;border-color:#e2dcff;color:#5a46b0}
.prose .note::before{content:"i";background:#7c3aed;color:#fff}
.prose .tip strong,.prose .note strong{color:inherit}

/* ============================================================================
   FAQ
   ============================================================================ */
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--shadow-sm);overflow:hidden;margin:0;
  transition:border-color .18s,box-shadow .18s;
}
.faq-item:hover{border-color:var(--line-strong);box-shadow:var(--shadow-md)}
.faq-item summary{
  cursor:pointer;list-style:none;display:flex;align-items:center;gap:13px;
  padding:17px 20px;font-weight:700;font-size:15.5px;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"Q";flex:0 0 auto;width:27px;height:27px;border-radius:9px;background:var(--brand-soft);
  color:var(--brand-strong);display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;
}
.faq-item[open] summary::before{background:var(--grad-main);color:#fff}
.faq-item .a{padding:0 22px 18px 60px;color:var(--ink-2);font-size:14.5px;line-height:1.9}
.faq-item summary::after{content:"＋";margin-left:auto;color:var(--ink-3);font-size:16px;font-weight:600;flex:0 0 auto}
.faq-item[open] summary::after{content:"−"}

/* ============================================================================
   CTA 深色渐变横幅 + 相关阅读
   ============================================================================ */
.cta-wrap{padding:clamp(24px,4vw,44px) 0 0}
.cta-panel{
  position:relative;overflow:hidden;border-radius:26px;padding:56px 34px;text-align:center;
  background:var(--grad-dark);color:#fff;box-shadow:var(--shadow-lg);
}
.cta-panel::before{
  content:"";position:absolute;width:420px;height:420px;border-radius:50%;left:-140px;top:-180px;
  background:radial-gradient(circle,rgba(129,140,248,.45),transparent 65%);
}
.cta-panel::after{
  content:"";position:absolute;width:460px;height:460px;border-radius:50%;right:-150px;bottom:-220px;
  background:radial-gradient(circle,rgba(14,165,233,.4),transparent 65%);
}
.cta-panel>*{position:relative;z-index:1}
.cta-panel h2{font-size:clamp(23px,3vw,31px);font-weight:800}
.cta-panel p{color:rgba(255,255,255,.82);margin:10px auto 26px;max-width:560px;font-size:15.5px}
.cta-panel .btn{background:#fff;color:var(--brand-strong);box-shadow:0 14px 30px -12px rgba(0,0,0,.45)}
.cta-panel .btn:hover{color:#fff}
.cta-panel .btn.ghost{background:transparent;color:#fff;box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.5)}
.cta-panel .btn.ghost:hover{box-shadow:inset 0 0 0 2px #fff}

.rel-wrap{padding:clamp(26px,4vw,44px) 0 0}
.rel-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin-top:24px}
.rel-card{
  display:flex;gap:12px;align-items:center;background:#fff;border:1px solid var(--line);
  border-radius:16px;padding:15px 16px;box-shadow:var(--shadow-sm);
  transition:transform .16s,box-shadow .16s,border-color .16s;
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.rel-card .r-ic{width:42px;height:42px;flex:0 0 auto;border-radius:12px;background:var(--grad-soft);display:flex;align-items:center;justify-content:center;font-size:21px}
.rel-card b{display:block;font-size:14.5px;color:var(--ink)}
.rel-card span{font-size:12.5px;color:var(--ink-3)}
.rel-card .go{margin-left:auto;color:var(--brand);font-weight:800}

/* ============================================================================
   页脚（深色 · 多列链接）
   ============================================================================ */
.site-footer{
  margin-top:clamp(50px,7vw,84px);background:#12173a;color:#c6cdea;
  position:relative;overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,#4338ca,#6366f1,#0ea5e9,#06b6d4);
}
.footer-inner{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:34px;
  padding:52px 0 38px;
}
.f-brand .fb-mark{display:flex;align-items:center;gap:9px;margin-bottom:12px}
.f-brand .fb-mark svg{width:32px;height:32px;display:block}
.f-brand .fb-mark b{font-size:18px;color:#fff;letter-spacing:2px}
.f-brand p{font-size:13.5px;line-height:1.9;color:#9aa3cf;max-width:300px}
.f-badges{display:flex;flex-wrap:wrap;gap:7px;margin-top:15px}
.f-badges span{
  font-size:11.5px;color:#c6cdea;background:rgba(129,140,248,.12);
  border:1px solid rgba(129,140,248,.25);border-radius:999px;padding:4px 11px;
}
.footer-col h4{
  font-size:13.5px;color:#fff;font-weight:700;letter-spacing:1px;margin-bottom:16px;
  display:flex;align-items:center;gap:8px;
}
.footer-col h4::after{content:"";width:16px;height:2px;background:linear-gradient(90deg,#6366f1,#0ea5e9);border-radius:2px}
.footer-col a{display:flex;align-items:center;gap:6px;font-size:14px;color:#9aa3cf;padding:5.5px 0;transition:color .15s,transform .15s}
.footer-col a::before{content:"›";color:#5b64a8;transition:color .15s}
.footer-col a:hover{color:#fff;transform:translateX(3px)}
.footer-col a:hover::before{color:#0ea5e9}
.footer-bottom{
  border-top:1px solid rgba(148,163,184,.16);padding:18px 0;display:flex;
  justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;
  font-size:12.5px;color:#7d87bd;
}
.footer-bottom .fb-links a{color:#9aa3cf;margin-left:18px}
.footer-bottom .fb-links a:hover{color:#fff}

/* ============================================================================
   通用响应式
   ============================================================================ */
@media (max-width:1023px){
  .desk-nav{display:none}
  .mnav{display:block}
  .footer-inner{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:860px){
  .tw-body{grid-template-columns:1fr}
  .tw-canvas{min-height:250px}
  .tw-panel{border-left:0;border-top:1px solid var(--line);padding:18px 20px}
  .hero-cta .btn{flex:1;max-width:320px}
}
@media (max-width:640px){
  .wrap,.container{padding:0 16px}
  .brand-tx i{display:none}
  .mnav-panel{padding:12px 16px 18px}
  .home-hero{padding:44px 0 56px}
  .mock-img{inset:10px}
  .tool-window{box-shadow:var(--shadow-md)}
  .scene-grid{grid-template-columns:1fr}
  .grid.c3{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .footer-inner{grid-template-columns:1fr;gap:22px;padding:38px 0 28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .prose th,.prose td{padding:9px 10px}
  .faq-item .a{padding:0 16px 16px 46px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto}
}

/* FAQ 项出现在正文(prose)内部时的间距 */
.prose .faq-item{margin:10px 0}

/* FAQ 项出现在正文(prose)内部时的间距 */
.prose .faq-item{margin:10px 0}

/* ===== imgcomp.com 微调 ===== */
.tool-window{margin:56px auto 64px}
.home-hero{padding-bottom:60px}

/* ===== imgcomp 富排版内容页 ===== */
.rich{max-width:1000px;margin:0 auto}
.rich .steps{margin-bottom:10px}
.rich-h{display:flex;align-items:center;gap:10px;margin:34px 0 18px;font-size:20px;font-weight:800;color:var(--ink,#182540)}
.rich-h::before{content:"";width:5px;height:1em;border-radius:4px;background:linear-gradient(115deg,#2563eb,#06b6d4)}
.rich-p{font-size:16px;line-height:2;color:var(--ink-2,#46536f);max-width:860px}
.card .card-tag{display:inline-block;margin-top:10px;font-size:12px;font-weight:700;color:#2563eb;background:#e8f0ff;border-radius:999px;padding:3px 11px}
.fmt-pills{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0 8px}
.fmt-pills span{background:#fff;border:1px solid var(--line,#e4eaf7);border-radius:999px;padding:6px 16px;font-weight:700;font-size:14px;color:var(--ink-2,#46536f)}
.fmt-box{background:#fff;border:1px solid var(--line,#e4eaf7);border-radius:16px;overflow:hidden;box-shadow:var(--shadow-sm,0 1px 2px rgba(24,37,64,.05))}
.fmt-line{display:flex;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid #eef1f8;font-size:14px;flex-wrap:wrap}
.fmt-line:last-child{border-bottom:0}
.fmt-line b{color:#2563eb;font-weight:800;width:58px;flex:0 0 auto}
.fmt-line span{color:var(--ink,#182540);flex:1;min-width:0}
.fmt-line em{font-style:normal;color:var(--ink-3,#7c89a5);font-size:13px}
.seo-more{background:#fff;border:1px solid var(--line,#e4eaf7);border-radius:16px;box-shadow:var(--shadow-sm,0 1px 2px rgba(24,37,64,.05));margin:26px 0 8px;overflow:hidden}
.seo-more summary{cursor:pointer;list-style:none;display:flex;align-items:center;padding:14px 18px;font-weight:700;font-size:14.5px;color:var(--ink,#182540)}
.seo-more summary::-webkit-details-marker{display:none}
.seo-more summary::after{content:"展开 ▾";margin-left:auto;color:var(--ink-3,#7c89a5);font-size:12.5px;font-weight:600}
.seo-more[open] summary::after{content:"收起 ▴"}
.seo-more[open] .prose{border-top:1px dashed var(--line,#e4eaf7);padding:16px 20px 8px}