/* 面无忧官网
 *
 * 与客户端保持同一套品牌色：纸白 #f7f5f0 / 墨 #22201c / 深绿 #2f5d50。
 * 只有一个强调色（深绿），全站一致。
 *
 * 圆角规则（唯一一套）：卡片 14px，按钮与输入 10px，标签胶囊全圆角。
 * 字体：系统字体栈，不加载中文 webfont（首屏速度优先）。
 */

:root{
  --paper:#f7f5f0;
  --paper-2:#f1eee7;
  --panel:#fbfaf7;
  --line:#e4dfd4;
  --line-strong:#d6d0c2;
  --ink:#22201c;
  --muted:#6f6a61;
  --green:#2f5d50;
  --green-soft:#e7ede9;
  --radius-card:14px;
  --radius-control:10px;
  --wrap:1180px;
  --ease:cubic-bezier(.16,1,.3,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3{margin:0;font-weight:600;letter-spacing:-.02em;line-height:1.2}
section[id]{scroll-margin-top:84px}
p{margin:0}

.wrap{width:min(var(--wrap),100% - 48px);margin-inline:auto}

.skip{position:absolute;left:-9999px}
.skip:focus{left:16px;top:16px;z-index:99;background:var(--ink);color:#fff;padding:10px 16px;border-radius:8px}

/* ---------- 导航 ---------- */
.nav{
  position:sticky;top:0;z-index:20;
  background:color-mix(in srgb,var(--paper) 94%,transparent);
  backdrop-filter:saturate(150%) blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease),background .3s var(--ease);
}
.nav.is-stuck{border-bottom-color:var(--line)}
.nav-inner{height:68px;display:flex;align-items:center;gap:32px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:600;font-size:17px}
.brand-mark{
  width:30px;height:30px;border-radius:9px;background:var(--green);color:var(--paper);
  display:grid;place-items:center;font-size:16px;font-weight:600;letter-spacing:0;line-height:1
}
.brand-mark.small{width:26px;height:26px;font-size:15px;border-radius:8px}
.nav-links{display:flex;gap:28px;margin-left:auto;font-size:15px;color:var(--muted)}
.nav-links a{text-decoration:none;transition:color .2s var(--ease)}
.nav-links a:hover{color:var(--ink)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border-radius:var(--radius-control);
  background:var(--green);color:#fff;text-decoration:none;font-size:16px;font-weight:500;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .18s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
  box-shadow:0 1px 0 rgba(34,32,28,.04);
}
.btn:hover{background:#285146;transform:translateY(-1px)}
.btn:active{transform:translateY(0) scale(.99)}
.btn-small{height:36px;min-height:36px;padding:0 14px;font-size:14px;border-radius:9px}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-strong)}
.btn-ghost:hover{background:var(--paper-2);border-color:var(--muted)}
.btn-dark{background:var(--ink);color:var(--paper)}
.btn-dark:hover{background:#000}

/* ---------- 通用排版 ---------- */
.eyebrow{
  display:inline-block;margin-bottom:18px;font-size:13px;letter-spacing:.14em;
  color:var(--green);font-weight:600;
}
.eyebrow.light{color:var(--green-soft)}
.section-title{font-size:clamp(30px,4vw,44px);line-height:1.25;letter-spacing:-.03em}
.lede{font-size:18px;color:var(--muted);max-width:100%;margin-top:20px}

/* ---------- Hero ---------- */
.hero{position:relative;padding:72px 0 92px;overflow:visible}
.hero::before{
  content:"";position:absolute;inset:-20% -10% auto -10%;height:720px;pointer-events:none;
  background:radial-gradient(60% 60% at 78% 18%,rgba(47,93,80,.13),rgba(47,93,80,0) 70%),
             radial-gradient(45% 45% at 12% 0%,rgba(47,93,80,.07),rgba(47,93,80,0) 70%);
}
.hero-grid{position:relative}
.hero-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center}

/* 宽屏时让截图往右出血，视觉上更“产品大片”，而不是缩在栅格里 */
@media (min-width:1200px){
  .hero-grid{grid-template-columns:minmax(0,.82fr) minmax(0,1.34fr);gap:64px}
  .hero-shot{margin-right:calc((100vw - var(--wrap)) / -2 - 10px)}
}
.hero h1{font-size:clamp(40px,5.8vw,72px);line-height:1.06;letter-spacing:-.04em}
.hero-actions{display:flex;gap:12px;margin-top:36px;flex-wrap:wrap}
.hero-shot{margin:0}
/* 首图做成“画框”：截图四周留一圈纸色卡纸，比直接贴图更像产品图 */
.hero-shot{
  position:relative;margin:0;padding:12px;background:var(--panel);
  border:1px solid var(--line);border-radius:20px;
  box-shadow:0 40px 90px -46px rgba(34,32,28,.5),0 4px 14px rgba(34,32,28,.05);
}
.hero-shot::after{
  content:"";position:absolute;inset:12% -6% -10% 8%;z-index:-1;border-radius:40px;
  background:radial-gradient(60% 60% at 50% 50%,rgba(47,93,80,.18),rgba(47,93,80,0) 72%);
  filter:blur(12px);
}
.hero-shot img{width:100%;border-radius:12px;display:block}

/* 首图下方的小标签：真实能力，不是装饰 */
.hero-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
.hero-tags span{
  font-size:12.5px;color:var(--muted);border:1px solid var(--line);border-radius:999px;
  padding:5px 11px;background:var(--panel);
}

/* ---------- 功能 bento ---------- */
.features{padding:96px 0}
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:16px;margin-top:44px}
.cell{
  grid-column:span 6;padding:30px 30px 32px;border-radius:var(--radius-card);
  border:1px solid var(--line);background:var(--panel);
}
.cell h3{font-size:20px;margin-bottom:10px}
.cell p{color:var(--muted);font-size:16px;line-height:1.8}
.cell-wide{grid-column:span 12;background:var(--paper-2)}
.cell-tint{background:linear-gradient(135deg,var(--paper-2),var(--panel) 70%)}
.cell-green{background:var(--green);border-color:var(--green);color:var(--paper)}
.cell-green p{color:#d6e2dc}
.cell-shot{grid-column:span 12;display:grid;grid-template-columns:7fr 5fr;gap:0;padding:0;overflow:hidden;background:var(--panel)}
.cell-shot img{width:100%;height:100%;object-fit:cover;object-position:left top;border-right:1px solid var(--line)}
.cell-shot-text{padding:32px}
.cell-shot-text h3{font-size:20px;margin-bottom:10px}
.cell-shot-text p{color:var(--muted);font-size:16px}

/* ---------- 适用场景 ---------- */
.scene{background:var(--panel);border-block:1px solid var(--line);padding:72px 0}
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:36px;
  border-top:1px solid var(--line)}
.scene-item{padding:30px 26px 30px 0;border-bottom:1px solid var(--line)}
.scene-item + .scene-item{border-left:1px solid var(--line);padding-left:26px}
.scene-item h3{font-size:19px;margin-bottom:8px}
.scene-item p{color:var(--muted);font-size:15.5px}
.scene-item .k{display:block;font-size:12.5px;color:var(--green);letter-spacing:.12em;margin-bottom:12px}

/* ---------- 面试中 ---------- */
.live{padding:96px 0;background:var(--paper-2);border-block:1px solid var(--line)}
.live-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.live-shot{margin:0}
.live-shot img{width:100%;filter:drop-shadow(0 18px 40px rgba(34,32,28,.18))}
.live-copy h2{font-size:clamp(26px,3.4vw,36px);line-height:1.3}
.points{list-style:none;margin:28px 0 0;padding:0;display:grid;gap:18px}
.points li{position:relative;padding-left:20px;color:var(--muted);font-size:16px}
.points li::before{content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:2px;background:var(--green)}
.points strong{color:var(--ink);font-weight:600}

/* ---------- 三步 ---------- */
.how{padding:96px 0}
.steps{list-style:none;margin:44px 0 0;padding:0;border-top:1px solid var(--line)}
.steps li{display:grid;grid-template-columns:120px 1fr;gap:28px;padding:34px 0;border-bottom:1px solid var(--line)}
.step-num{font-size:15px;color:var(--muted);font-variant-numeric:tabular-nums;padding-top:6px}
.steps h3{font-size:22px;margin-bottom:8px}
.steps p{color:var(--muted);max-width:56ch}

/* ---------- 安全 ---------- */
.trust{background:var(--green);color:var(--paper);padding:88px 0}
.trust-inner{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.trust h2{font-size:clamp(28px,3.6vw,40px);line-height:1.25;color:#fff}
.trust-list{list-style:none;margin:0;padding:0;display:grid;gap:22px}
.trust-list li{color:#cfdfd8;font-size:16px;padding-left:18px;position:relative}
.trust-list li::before{content:"";position:absolute;left:0;top:.6em;width:8px;height:2px;background:#8fb3a6}
.trust-list strong{color:#fff;font-weight:600}

/* ---------- 价格 ---------- */
.price{padding:96px 0}
.price-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:44px}
.price-col{border:1px solid var(--line);border-radius:var(--radius-card);padding:32px;background:var(--panel)}
.price-col-accent{border-color:var(--green);background:#fbfcfa}
.price-col h3{font-size:18px;margin-bottom:18px;color:var(--muted);font-weight:500}
.price-list{list-style:none;margin:0;padding:0}
.price-list li{display:flex;justify-content:space-between;align-items:baseline;padding:12px 0;border-bottom:1px solid var(--line)}
.price-list li:last-child{border-bottom:0}
.price-list span{color:var(--muted);font-size:16px}
.price-list b{font-size:22px;font-weight:600;letter-spacing:-.01em}
.price-note{color:var(--muted);font-size:14px;margin-top:16px}
.price-foot{color:var(--muted);font-size:15px;margin-top:24px}

/* ---------- FAQ ---------- */
.faq{padding:0 0 96px}
.faq-wrap{max-width:820px}
details{border-bottom:1px solid var(--line)}
details:first-of-type{border-top:1px solid var(--line)}
summary{
  cursor:pointer;padding:22px 0;font-size:17px;font-weight:500;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:16px;
}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--muted);font-size:20px;line-height:1;transition:transform .2s var(--ease)}
details[open] summary::after{transform:rotate(45deg)}
details p{color:var(--muted);padding:0 0 24px;max-width:64ch}

/* ---------- 下载 ---------- */
.download{
  position:relative;overflow:hidden;padding:88px 0;
  background:linear-gradient(150deg,#2f5d50 0%,#25493f 55%,#1d3a33 100%);
  color:var(--paper);
}
.download::after{
  content:"";position:absolute;inset:auto -10% -40% 30%;height:420px;pointer-events:none;
  background:radial-gradient(50% 50% at 50% 50%,rgba(255,255,255,.10),rgba(255,255,255,0) 70%);
}
.download-inner{display:flex;justify-content:space-between;align-items:center;gap:40px;flex-wrap:wrap}
.download h2{font-size:clamp(30px,3.8vw,44px);color:#fff}
.download p{color:#cfdfd8;margin-top:12px;max-width:46ch}
.download .btn-dark{background:var(--paper);color:var(--ink)}
.download .btn-dark:hover{background:#fff}
.download-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.foot{padding:48px 0;border-top:1px solid var(--line)}
.foot-inner{display:grid;gap:12px}
.foot-brand{display:flex;align-items:center;gap:10px;font-weight:600}
.foot-note,.foot-copy{color:var(--muted);font-size:14px}
.foot-copy a{text-decoration:none;border-bottom:1px solid var(--line-strong)}

/* ---------- 进场动效 ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:980px){
  .hero-grid,.live-grid,.trust-inner,.price-grid,.cell-shot{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr}
  .scene-item{padding:24px 0}
  .scene-item + .scene-item{border-left:0;padding-left:0}
  .hero{padding-top:40px}
  .hero-grid{gap:36px}
  .live-grid{gap:36px}
  .cell,.cell-wide{grid-column:span 12}
  .cell-shot img{border-right:0;border-bottom:1px solid var(--line);max-height:340px}
  .trust{padding:64px 0}
  .trust-inner{gap:28px}
}
@media (max-width:720px){
  body{font-size:16px}
  .wrap{width:calc(100% - 32px)}
  .nav-links{display:none}
  .nav-inner{height:60px;gap:16px}
  .hero{padding:32px 0 64px}
  .features,.live,.how,.price{padding:64px 0}
  .faq{padding-bottom:64px}
  .steps li{grid-template-columns:1fr;gap:8px;padding:24px 0}
  .step-num{padding-top:0}
  .download-inner{flex-direction:column;align-items:flex-start}
  .download-actions{width:100%}
  .download-actions .btn{flex:1}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
}

/* ---------- 首屏铺满视口（宽屏） ---------- */
@media (min-width:980px){
  .hero{min-height:calc(100dvh - 68px);display:flex;align-items:center}
  .hero .wrap{width:min(var(--wrap),100% - 48px)}
}

/* ---------- 指南（文章） ---------- */
.crumbs{font-size:13.5px;color:var(--muted);margin-bottom:28px}
.crumbs a{color:var(--muted);text-decoration:none;border-bottom:1px solid var(--line)}
.crumbs a:hover{color:var(--ink)}
.article{padding:56px 0 96px}
.article-wrap{max-width:760px}
.article h1{font-size:clamp(30px,4vw,46px);line-height:1.2;letter-spacing:-.03em}
.article .lede{font-size:18px;color:var(--muted);margin-top:18px;max-width:100%}
.article .meta{color:var(--muted);font-size:13.5px;margin-top:22px;padding-bottom:22px;border-bottom:1px solid var(--line)}
.article h2{font-size:clamp(22px,2.6vw,28px);margin:44px 0 14px;letter-spacing:-.02em}
.article h3{font-size:18.5px;margin:28px 0 10px}
.article p{margin:14px 0;color:#3a3733;line-height:1.9}
.article ul,.article ol{margin:14px 0;padding-left:22px;color:#3a3733;line-height:1.9}
.article li{margin:8px 0}
.article li::marker{color:var(--green)}
.article strong{color:var(--ink);font-weight:600}
.article blockquote{
  margin:24px 0;padding:18px 22px;border-left:2px solid var(--green);
  background:var(--paper-2);border-radius:0 var(--radius-control) var(--radius-control) 0;
  color:#3a3733;
}
.article blockquote p{margin:0}
.article .note{
  margin:24px 0;padding:18px 20px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--panel);font-size:15.5px;color:var(--muted);
}
.article .note strong{display:block;color:var(--ink);margin-bottom:6px;font-size:15px}
.toc{
  margin:28px 0 8px;padding:20px 22px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--panel);font-size:15px;
}
.toc p{margin:0 0 10px;font-size:12.5px;letter-spacing:.12em;color:var(--green);font-weight:600}
.toc ol{margin:0;padding-left:20px}
.toc a{color:var(--muted);text-decoration:none}
.toc a:hover{color:var(--ink)}
.related{margin-top:56px;padding-top:28px;border-top:1px solid var(--line)}
.related h2{font-size:18px;margin:0 0 14px}
.related ul{list-style:none;padding:0;margin:0}
.related li{padding:12px 0;border-bottom:1px solid var(--line)}
.related a{text-decoration:none;color:var(--ink);font-weight:500}
.related a:hover{color:var(--green)}
.related span{display:block;color:var(--muted);font-size:14px;margin-top:4px}
.article-cta{
  margin:40px 0 0;padding:26px 28px;border-radius:var(--radius-card);
  background:linear-gradient(140deg,#2f5d50,#1f3f36);color:var(--paper);
}
.article-cta h2{color:#fff;margin:0 0 8px;font-size:20px}
.article-cta p{color:#cfdfd8;margin:0 0 18px;font-size:15px}
.article-cta .btn{background:var(--paper);color:var(--ink)}
.article-cta .btn:hover{background:#fff}

/* 指南列表页 */
.guide-list{display:grid;gap:0;margin-top:40px;border-top:1px solid var(--line)}
.guide-item{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:baseline;
  padding:26px 0;border-bottom:1px solid var(--line);text-decoration:none;color:inherit}
.guide-item h2{font-size:20px;margin:0 0 6px}
.guide-item p{color:var(--muted);font-size:15px;margin:0}
.guide-item .date{color:var(--muted);font-size:13.5px;white-space:nowrap}
.guide-item:hover h2{color:var(--green)}
@media (prefers-reduced-motion:reduce){ .hero{min-height:0} }