/* 铭瀚智远 Mondeon · 苹果风格 */
:root{
  --bg:#ffffff; --bg-2:#f5f5f7; --ink:#1d1d1f; --ink-2:#6e6e73; --ink-3:#86868b;
  --line:#d2d2d7; --blue:#0071e3; --blue-hover:#0077ed; --link:#0066cc;
  --dark:#000; --dark-2:#161617;
  --radius:28px; --radius-sm:18px; --w:1080px;
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);font-size:17px;line-height:1.5;-webkit-font-smoothing:antialiased;letter-spacing:-.01em}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.wrap{max-width:var(--w);margin:0 auto;padding:0 24px}

/* 顶栏 */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.72);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid rgba(0,0,0,.08)}
.nav .wrap{height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:baseline;gap:8px;font-weight:600;font-size:19px}
.brand small{font-size:12px;font-weight:500;color:var(--ink-3);letter-spacing:.08em}
.nav-links{display:flex;gap:30px;font-size:15px;color:#333}
.nav-links a:hover,.nav-links a.on{color:var(--ink)}
.nav-links a.on{font-weight:600}
.nav-cta{background:var(--blue);color:#fff;font-size:14px;padding:7px 16px;border-radius:999px}
.nav-cta:hover{background:var(--blue-hover)}
.burger{display:none;background:none;border:0;font-size:22px;cursor:pointer;padding:4px 8px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;font-size:17px;padding:12px 24px;border-radius:999px;border:0;cursor:pointer;font-family:inherit;transition:background .2s,transform .1s}
.btn:active{transform:scale(.98)}
.btn-blue{background:var(--blue);color:#fff}.btn-blue:hover{background:var(--blue-hover)}
.btn-line{background:transparent;color:var(--blue);box-shadow:inset 0 0 0 1.5px var(--blue)}.btn-line:hover{background:var(--blue);color:#fff}
.btn-white{background:#fff;color:var(--ink)}
.link{color:var(--link);font-size:17px}.link:hover{text-decoration:underline}

/* 区块 */
section{padding:110px 0}
.gray{background:var(--bg-2)}
.black{background:var(--dark);color:#f5f5f7}
.eyebrow{font-size:17px;font-weight:600;color:var(--ink-2);margin:0 0 10px}
.black .eyebrow{color:#a1a1a6}
.h1{font-size:clamp(44px,7vw,80px);line-height:1.05;font-weight:700;letter-spacing:-.03em;margin:0}
.h2{font-size:clamp(34px,5vw,56px);line-height:1.08;font-weight:700;letter-spacing:-.025em;margin:0}
.h3{font-size:24px;font-weight:600;letter-spacing:-.015em;margin:0 0 8px}
.lead{font-size:clamp(19px,2.2vw,24px);color:var(--ink-2);line-height:1.4;margin:18px 0 0;font-weight:400}
.black .lead{color:#a1a1a6}
.center{text-align:center}
.grad{background:linear-gradient(90deg,#0071e3,#7a5cff 55%,#c86dd7);-webkit-background-clip:text;background-clip:text;color:transparent}

/* 首屏 */
.hero{padding:120px 0 40px;text-align:center}
.hero .lead{max-width:720px;margin-left:auto;margin-right:auto}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:36px}
.hero-shot{margin:70px auto 0;max-width:980px;display:flex;justify-content:center;align-items:flex-end;gap:22px}
.phone{width:230px;aspect-ratio:9/19.5;border-radius:42px;background:#1d1d1f;padding:9px;box-shadow:0 30px 60px -20px rgba(0,0,0,.35)}
.phone>div{width:100%;height:100%;border-radius:34px;background:#eee center top/cover no-repeat}
.phone.mid{width:270px}
.phone.side{opacity:.95;transform:translateY(-10px)}

/* 卡片网格 */
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border-radius:var(--radius);padding:40px 36px;transition:transform .3s,box-shadow .3s}
.gray .card{background:#fff}
section:not(.gray):not(.black) .card{background:var(--bg-2)}
.card:hover{transform:translateY(-4px);box-shadow:0 20px 40px -20px rgba(0,0,0,.18)}
.card p{color:var(--ink-2);margin:0;font-size:17px}
.icon{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;font-size:26px;margin-bottom:22px;color:#fff}
.card ul{margin:18px 0 0;padding:0;list-style:none;color:var(--ink-2);font-size:15px}
.card li{padding:6px 0;border-top:1px solid rgba(0,0,0,.06)}
.card li:first-child{border-top:0}
.sec-head{margin-bottom:56px}
.sec-head.center .lead{max-width:680px;margin-left:auto;margin-right:auto}

/* 行业 */
.chips{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.chip{font-size:16px;padding:10px 20px;border-radius:999px;background:#fff;color:var(--ink);border:1px solid var(--line)}

/* 步骤 */
.steps{counter-reset:s}
.step{background:var(--dark-2);border-radius:var(--radius);padding:36px 30px}
.step .num{font-size:56px;font-weight:700;line-height:1;background:linear-gradient(180deg,#fff,#6e6e73);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:22px}
.step p{color:#a1a1a6;margin:0}

/* 数字 */
.stats{display:flex;justify-content:center;gap:80px;flex-wrap:wrap;margin-top:56px}
.stat b{display:block;font-size:64px;font-weight:700;letter-spacing:-.03em;line-height:1}
.stat span{color:var(--ink-2);font-size:17px}

/* 案例卡 */
.tpl-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:26px}
.tpl{background:#fff;border-radius:var(--radius-sm);overflow:hidden;cursor:pointer;transition:transform .3s,box-shadow .3s;display:flex;flex-direction:column;border:0;padding:0;text-align:left;font-family:inherit;color:inherit}
.tpl:hover{transform:translateY(-4px);box-shadow:0 20px 40px -18px rgba(0,0,0,.22)}
.tpl-cover{aspect-ratio:4/5;background:#e8e8ed center top/cover no-repeat;position:relative}
.tpl-tag{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.88);backdrop-filter:blur(10px);font-size:13px;font-weight:600;padding:4px 10px;border-radius:999px}
.tpl-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.tpl-name{font-size:18px;font-weight:600;display:flex;justify-content:space-between;gap:8px;align-items:baseline}
.tpl-name small{font-size:12px;color:var(--ink-3);font-weight:500}
.tpl-desc{font-size:14.5px;color:var(--ink-2);margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.tpl-feats{display:flex;flex-wrap:wrap;gap:6px;margin-top:2px}
.tpl-feats span{font-size:12px;background:var(--bg-2);color:var(--ink-2);padding:3px 9px;border-radius:999px}
.tpl-go{margin-top:auto;padding-top:8px;color:var(--link);font-size:15px}

.filter{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:0 0 48px}
.filter button{font-family:inherit;font-size:15px;padding:9px 18px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer;transition:.2s}
.filter button:hover{border-color:var(--ink-3)}
.filter button.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.filter button em{font-style:normal;color:var(--ink-3);font-size:13px;margin-left:4px}
.filter button.on em{color:#a1a1a6}

/* 预览弹窗 */
.modal{position:fixed;inset:0;z-index:100;background:rgba(0,0,0,.55);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);display:none;align-items:center;justify-content:center;padding:24px;gap:40px}
.modal.open{display:flex}
.modal .phone{width:min(390px,86vw);height:min(820px,86vh);aspect-ratio:auto;padding:12px;border-radius:52px;background:#1d1d1f;position:relative}
.modal iframe{width:100%;height:100%;border:0;border-radius:42px;background:#fff}
.modal-info{color:#fff;max-width:340px}
.modal-info h3{font-size:32px;margin:0 0 8px}
.modal-info p{color:#d2d2d7;margin:0 0 22px}
.modal-info .row{display:flex;gap:12px;flex-wrap:wrap}
.modal-close{position:absolute;top:22px;right:26px;width:44px;height:44px;border-radius:50%;border:0;background:rgba(255,255,255,.16);color:#fff;font-size:24px;cursor:pointer}
.modal-close:hover{background:rgba(255,255,255,.28)}
.loading{position:absolute;inset:12px;border-radius:42px;background:#fff;display:grid;place-items:center;color:var(--ink-3);font-size:15px;pointer-events:none;transition:opacity .3s}

/* 联系 */
.contact{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;max-width:820px;margin:0 auto}
.contact .card{text-align:center;padding:44px 30px}
.contact .val{font-size:28px;font-weight:600;margin:6px 0 22px;letter-spacing:0;word-break:break-all}
.contact .lbl{color:var(--ink-2);font-size:17px}
.toast{position:fixed;left:50%;bottom:40px;transform:translateX(-50%) translateY(20px);background:rgba(29,29,31,.92);color:#fff;padding:12px 22px;border-radius:999px;font-size:16px;opacity:0;transition:.3s;z-index:200;pointer-events:none}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* 页脚 */
footer{background:var(--bg-2);color:var(--ink-2);font-size:13px;padding:40px 0;border-top:1px solid rgba(0,0,0,.06)}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px}
footer a:hover{text-decoration:underline}
footer .links{display:flex;gap:22px}

/* 进场动画 */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .9s cubic-bezier(.2,.7,.2,1),transform .9s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* 手机 */
@media (max-width:860px){
  section{padding:80px 0}
  .g3,.g4{grid-template-columns:repeat(2,1fr)}
  .nav-links{display:none;position:absolute;top:56px;left:0;right:0;background:rgba(255,255,255,.97);flex-direction:column;gap:0;padding:8px 24px 16px;border-bottom:1px solid var(--line)}
  .nav-links.open{display:flex}
  .nav-links a{padding:14px 0;font-size:18px;border-bottom:1px solid rgba(0,0,0,.06)}
  .burger{display:block}
  .phone.side{display:none}
  .modal{flex-direction:column;gap:16px}
  .modal-info{text-align:center}.modal-info .row{justify-content:center}.modal-info p{display:none}
  .modal-info h3{font-size:22px;margin:0 0 10px}
  .modal .phone{height:min(700px,70vh)}
}
@media (max-width:560px){
  .g2,.g3,.g4,.contact{grid-template-columns:1fr}
  .card{padding:32px 26px}
  .stats{gap:40px}
  .tpl-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .tpl-body{padding:12px}
  .tpl-name{font-size:15px;flex-direction:column;gap:2px}
  .tpl-desc{font-size:13px;-webkit-line-clamp:2}
  .tpl-feats{display:none}
  .nav-cta{display:none}
  .filter{flex-wrap:nowrap;overflow-x:auto;justify-content:flex-start;margin:0 -24px 28px;padding:0 24px 6px;scrollbar-width:none}
  .filter::-webkit-scrollbar{display:none}
  .filter button{flex:none}
}

/* ================= 黑色版（html.dark） ================= */
html.dark{--bg:#000;--bg-2:#0b0b0d;--ink:#f5f5f7;--ink-2:#a1a1a6;--ink-3:#6e6e73;--line:#2c2c2e;--blue:#0a84ff;--blue-hover:#409cff;--link:#2997ff;--dark:#0b0b0d;--dark-2:#1c1c1e;color-scheme:dark}
html.dark body{background:#000}
html.dark .nav{background:rgba(0,0,0,.72);border-bottom-color:rgba(255,255,255,.1)}
html.dark .nav-links{color:#a1a1a6}
html.dark .nav-links a:hover,html.dark .nav-links a.on{color:#f5f5f7}
html.dark .burger{color:#f5f5f7}
html.dark .gray{background:#0b0b0d}
html.dark .card,html.dark .gray .card,html.dark section:not(.gray):not(.black) .card{background:#1c1c1e}
html.dark .card:hover{box-shadow:0 20px 50px -20px rgba(41,151,255,.25)}
html.dark .card li{border-top-color:rgba(255,255,255,.08)}
html.dark .black{background:linear-gradient(180deg,#000 0%,#0b0b0d 100%);border-top:1px solid #1c1c1e;border-bottom:1px solid #1c1c1e}
html.dark .chip{background:#1c1c1e;border-color:#2c2c2e;color:#f5f5f7}
html.dark .chip:hover{border-color:#6e6e73}
html.dark .tpl{background:#1c1c1e}
html.dark .tpl:hover{box-shadow:0 20px 50px -18px rgba(41,151,255,.3)}
html.dark .tpl-cover{background-color:#2c2c2e}
html.dark .tpl-tag{background:rgba(0,0,0,.6);color:#f5f5f7}
html.dark .tpl-feats span{background:#2c2c2e;color:#a1a1a6}
html.dark .filter button{background:#1c1c1e;border-color:#2c2c2e;color:#f5f5f7}
html.dark .filter button.on{background:#f5f5f7;color:#000;border-color:#f5f5f7}
html.dark .filter button.on em{color:#6e6e73}
html.dark .btn-white{background:#f5f5f7;color:#000}
html.dark .phone{background:#2c2c2e;box-shadow:0 30px 80px -20px rgba(41,151,255,.35)}
html.dark .hero{background:radial-gradient(900px 500px at 50% 0%,rgba(41,151,255,.14),transparent 70%)}
html.dark .grad{background:linear-gradient(90deg,#2997ff,#a78bfa 55%,#f0abfc);-webkit-background-clip:text;background-clip:text}
html.dark footer{background:#000;border-top-color:#1c1c1e}
html.dark .nav-links.open{background:rgba(0,0,0,.96);border-bottom-color:#2c2c2e}
html.dark .nav-links a{border-bottom-color:rgba(255,255,255,.08)}
html.dark .toast{background:rgba(245,245,247,.95);color:#000}

/* 主题切换按钮 */
.theme-btn{font-family:inherit;font-size:13px;padding:6px 12px;border-radius:999px;border:1px solid var(--line);background:transparent;color:var(--ink);cursor:pointer}
.theme-btn:hover{border-color:var(--ink-3)}
html.dark .filter button em{color:#8e8e93}

/* 高清封面：截图放在柔和底色上，保留圆角 */
.tpl-cover{aspect-ratio:4/5;background:linear-gradient(160deg,#f5f5f7,#e8e8ed);display:flex;align-items:flex-start;justify-content:center;overflow:hidden;padding:22px 22px 0}
.tpl-cover img{width:78%;height:auto;border-radius:22px 22px 0 0;box-shadow:0 10px 30px -10px rgba(0,0,0,.25);transition:transform .5s cubic-bezier(.2,.7,.2,1)}
.tpl:hover .tpl-cover img{transform:translateY(-6px)}
html.dark .tpl-cover{background:linear-gradient(160deg,#2c2c2e,#1c1c1e)}
html.dark .tpl-cover img{box-shadow:0 10px 40px -10px rgba(0,0,0,.8)}
@media (max-width:560px){.tpl-cover{padding:12px 12px 0}.tpl-cover img{width:86%;border-radius:14px 14px 0 0}}
.tpl-cover .tpl-tag{top:auto;bottom:14px;left:14px;z-index:2;backdrop-filter:blur(10px)}

/* ===== 留白调整：内容更松 ===== */
:root{--w:1180px}
section{padding:140px 0}
.sec-head{margin-bottom:72px}
.grid{gap:28px}
.card{padding:44px 40px}
/* 案例卡片：每行 3 个，间距加大，只留名称+一句介绍 */
.tpl-grid{grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:48px 36px}
.tpl{background:transparent!important;border-radius:0;overflow:visible}
.tpl:hover{transform:none;box-shadow:none!important}
.tpl-cover{border-radius:var(--radius);padding:36px 36px 0}
.tpl-cover img{width:70%}
.tpl-body{padding:20px 6px 0;gap:6px}
.tpl-name{font-size:20px}
.tpl-desc{-webkit-line-clamp:2;font-size:15px;line-height:1.6}
.tpl-feats{display:none}
.tpl-go{padding-top:6px}
/* 行业筛选按钮之间多点空隙 */
.filter{gap:10px 10px;margin-bottom:64px;max-width:960px;margin-left:auto;margin-right:auto}
.filter button{padding:9px 18px}
.chips{gap:12px;max-width:920px;margin-left:auto;margin-right:auto}
/* 预览弹窗：手机和文字拉开 */
.modal{gap:88px}
.modal-info{max-width:380px}
.modal-info h3{font-size:40px;margin-bottom:16px;line-height:1.15}
.modal-info p{font-size:17px;line-height:1.75;margin-bottom:36px}
@media (max-width:900px){
  section{padding:96px 0}
  .tpl-grid{grid-template-columns:repeat(2,1fr);gap:36px 20px}
  .modal{gap:20px}
}
@media (max-width:560px){
  section{padding:80px 0}
  .card{padding:30px 26px}
  .tpl-grid{gap:28px 14px}
  .tpl-cover{padding:16px 16px 0;border-radius:20px}
  .tpl-cover img{width:84%}
  .tpl-body{padding:12px 2px 0}
  .tpl-name{font-size:15px}
  .filter{margin-bottom:36px}
  .modal-info h3{font-size:22px}
}
.modal .phone{height:min(780px,80vh)}
.modal-info p{color:#e5e5ea}
.modal-close{width:48px;height:48px;top:28px;right:32px;background:rgba(255,255,255,.22)}