:root{
  --blue:#2b5cff; --blue-deep:#16307a; --blue-dark:#0e1f4d; --navy:#12225c;
  --ink:#1a2332; --ink-2:#4a5568; --ink-3:#8a94a6;
  --bg:#f4f7ff; --card:#ffffff; --line:#e4e9f5;
  --amber:#ffb020; --amber-soft:#fff4dd;
  --green:#0fa968; --green-soft:#e2f7ee;
  --red:#e5484d; --radius:16px;
  --shadow:0 2px 10px rgba(18,34,92,.06),0 12px 32px rgba(18,34,92,.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Segoe UI",system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.7}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}

/* ---------- Nav ---------- */
nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-in{max-width:1180px;margin:0 auto;padding:12px 24px;display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--blue-deep);font-size:17px;white-space:nowrap}
.brand .dot{width:12px;height:12px;border-radius:50%;background:radial-gradient(circle at 35% 35%,#6f97ff,var(--blue) 70%)}
.nav-links{display:flex;gap:4px;flex-wrap:wrap;margin-left:auto}
.nav-links a{color:var(--ink-2);text-decoration:none;font-size:13.5px;padding:6px 12px;border-radius:8px;transition:.2s}
.nav-links a:hover{background:#eef2ff;color:var(--blue)}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(135deg,#0e1f4d 0%,#16307a 45%,#2b5cff 100%);color:#fff;padding:72px 0 88px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:
  radial-gradient(600px 300px at 85% 15%,rgba(255,255,255,.14),transparent 60%),
  radial-gradient(500px 400px at 10% 90%,rgba(255,176,32,.16),transparent 60%)}
.hero .wrap{position:relative}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:2px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);padding:5px 14px;border-radius:99px;margin-bottom:22px}
.hero h1{font-size:clamp(34px,5.4vw,58px);line-height:1.18;font-weight:900;letter-spacing:1px}
.hero h1 .num{background:linear-gradient(90deg,#ffd57a,#ffb020);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin-top:16px;font-size:clamp(15px,2vw,18px);color:#cdd9ff;max-width:760px}
.hero-meta{margin-top:28px;display:flex;gap:10px;flex-wrap:wrap}
.hero-meta span{font-size:12.5px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);padding:5px 13px;border-radius:99px;color:#dfe7ff}
.scroll-hint{margin-top:40px;display:inline-flex;align-items:center;gap:8px;color:#9fb3ff;font-size:13px;text-decoration:none}
.scroll-hint svg{animation:bounce 1.6s infinite}
@keyframes bounce{0%,100%{transform:translateY(0)}50%{transform:translateY(5px)}}

/* ---------- Sections ---------- */
section{padding:64px 0}
.sec-head{margin-bottom:34px}
.sec-tag{display:inline-block;font-size:12.5px;font-weight:700;color:var(--blue);background:#e8efff;padding:4px 12px;border-radius:6px;letter-spacing:1px;margin-bottom:10px}
.sec-head h2{font-size:clamp(24px,3.2vw,34px);color:var(--blue-dark);font-weight:900}
.sec-head p{color:var(--ink-2);margin-top:8px;max-width:720px;font-size:15px}
.note-inline{margin-top:12px;font-size:13px;color:var(--ink-3)}
.note-inline b{color:var(--amber)}

/* ---------- KPI ---------- */
.kpi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}
.kpi{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px 22px 18px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.kpi::after{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:linear-gradient(180deg,var(--blue),#7aa0ff)}
.kpi .v{font-size:38px;font-weight:900;color:var(--blue-deep);line-height:1.15}
.kpi .v small{font-size:16px;font-weight:700;color:var(--ink-3);margin-left:2px}
.kpi .l{font-size:13.5px;color:var(--ink-2);margin-top:4px}
.kpi .d{font-size:12px;color:var(--ink-3);margin-top:6px}

/* ---------- Industry ---------- */
.two-col{display:grid;grid-template-columns:1.15fr .85fr;gap:22px}
@media(max-width:900px){.two-col{grid-template-columns:1fr}}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.panel h3{font-size:17px;color:var(--blue-dark);margin-bottom:4px}
.panel .sub{font-size:12.5px;color:var(--ink-3);margin-bottom:18px}
.bar-row{display:grid;grid-template-columns:96px 1fr 34px;align-items:center;gap:12px;margin-bottom:13px;font-size:13.5px}
.bar-row .name{color:var(--ink-2);font-weight:600;text-align:right;white-space:nowrap}
.bar-track{height:26px;background:#eef2fb;border-radius:8px;overflow:hidden}
.bar-fill{height:100%;border-radius:8px;width:0;transition:width 1s cubic-bezier(.22,1,.36,1);display:flex;align-items:center;justify-content:flex-end;padding-right:8px;color:#fff;font-size:11.5px;font-weight:700;min-width:26px}
.bar-row .cnt{font-weight:800;color:var(--blue-deep)}
.tech-cloud{display:flex;flex-wrap:wrap;gap:9px}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;padding:5px 12px;border-radius:99px;background:#eef2ff;color:var(--blue-deep);border:1px solid #dbe5ff}
.chip i{font-style:normal;font-size:11px;background:var(--blue);color:#fff;border-radius:99px;padding:0 7px;line-height:17px}

/* ---------- Effects ---------- */
.fx-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:16px}
.fx-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);transition:.25s}
.fx-card:hover{transform:translateY(-3px);box-shadow:0 6px 18px rgba(18,34,92,.12)}
.fx-card .no{font-size:11.5px;font-weight:800;color:#fff;background:var(--blue);border-radius:5px;padding:2px 8px;display:inline-block;margin-bottom:8px}
.fx-card .t{font-size:14px;font-weight:800;color:var(--ink);margin-bottom:12px}
.fx-pair{display:flex;align-items:center;gap:10px}
.fx-box{flex:1;text-align:center;border-radius:10px;padding:9px 6px}
.fx-box.before{background:#f2f4fa;color:var(--ink-3)}
.fx-box.after{background:var(--green-soft);color:var(--green)}
.fx-box .big{font-size:19px;font-weight:900;line-height:1.3}
.fx-box .sm{font-size:11px;opacity:.85}
.fx-arrow{color:var(--amber);font-weight:900;font-size:16px}
.fx-delta{margin-top:10px;font-size:12px;color:var(--ink-2)}
.fx-delta b{color:var(--green)}

/* ---------- Cases ---------- */
.filters{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:26px}
.fbtn{border:1px solid var(--line);background:#fff;color:var(--ink-2);font-size:13px;font-weight:600;padding:7px 16px;border-radius:99px;cursor:pointer;transition:.2s}
.fbtn:hover{border-color:var(--blue);color:var(--blue)}
.fbtn.active{background:var(--blue);border-color:var(--blue);color:#fff}
.case-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:18px}
.case-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:.25s}
.case-card:hover{transform:translateY(-4px);box-shadow:0 10px 26px rgba(18,34,92,.14)}
.case-top{padding:20px 20px 14px;color:#fff;position:relative}
.case-top .no{font-size:12px;font-weight:900;opacity:.9;letter-spacing:1px}
.case-top h3{font-size:17.5px;line-height:1.45;font-weight:800;margin-top:6px}
.case-top .route{margin-top:8px;font-size:12.5px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);border-radius:8px;padding:5px 10px;display:inline-block}
.case-top .route b{color:#ffd57a}
.case-body{padding:16px 20px 18px;flex:1;display:flex;flex-direction:column;gap:10px}
.case-tags{display:flex;flex-wrap:wrap;gap:6px}
.tag{font-size:11px;font-weight:700;padding:2.5px 9px;border-radius:99px;background:#eef2ff;color:var(--blue-deep)}
.case-fde{display:flex;align-items:center;gap:10px;font-size:13px}
.avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--blue),#7aa0ff);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;flex:none}
.case-fde .who b{color:var(--ink)}
.case-fde .who span{color:var(--ink-3);font-size:12px;display:block}
.quote{font-size:12.5px;color:var(--ink-2);background:#f7f9ff;border-left:3px solid var(--amber);padding:8px 12px;border-radius:0 8px 8px 0;font-style:italic}
.case-metrics{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto}
.metric{font-size:11.5px;background:var(--green-soft);color:#0b7a4b;border-radius:8px;padding:4px 9px;font-weight:700}
.case-foot{padding:0 20px 18px}
.detail-btn{width:100%;border:1px solid var(--line);background:#fff;border-radius:10px;padding:9px;font-size:13px;font-weight:700;color:var(--blue);cursor:pointer;transition:.2s}
.detail-btn:hover{background:var(--blue);color:#fff;border-color:var(--blue)}
.partial-badge{position:absolute;top:14px;right:14px;font-size:10.5px;font-weight:800;background:var(--amber);color:#5c3d00;padding:3px 9px;border-radius:99px}

/* ---------- Modal ---------- */
.modal-mask{position:fixed;inset:0;background:rgba(14,25,61,.55);backdrop-filter:blur(4px);z-index:100;display:none;align-items:flex-start;justify-content:center;padding:40px 16px;overflow-y:auto}
.modal-mask.show{display:flex}
.modal{background:#fff;border-radius:18px;max-width:860px;width:100%;overflow:hidden;animation:pop .25s cubic-bezier(.22,1,.36,1)}
@keyframes pop{from{transform:translateY(24px);opacity:0}to{transform:none;opacity:1}}
.modal-head{padding:26px 30px;color:#fff}
.modal-head .no{font-size:12px;font-weight:900;opacity:.9;letter-spacing:1px}
.modal-head h3{font-size:22px;font-weight:900;margin-top:6px;line-height:1.4}
.modal-head .route{margin-top:10px;font-size:13px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);border-radius:8px;padding:6px 12px;display:inline-block}
.modal-head .route b{color:#ffd57a}
.modal-close{position:absolute;top:18px;right:18px;width:34px;height:34px;border-radius:50%;border:none;background:rgba(255,255,255,.18);color:#fff;font-size:17px;cursor:pointer}
.modal-body{padding:24px 30px 30px}
.m-sec{margin-bottom:22px}
.m-sec h4{font-size:14.5px;color:var(--blue-deep);margin-bottom:9px;display:flex;align-items:center;gap:8px}
.m-sec h4::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--amber)}
.m-sec p{font-size:13.8px;color:var(--ink-2)}
.steps{counter-reset:s}
.step{display:flex;gap:12px;margin-bottom:10px}
.step::before{counter-increment:s;content:counter(s);flex:none;width:24px;height:24px;border-radius:50%;background:var(--blue);color:#fff;font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;margin-top:3px}
.step p{font-size:13.5px;color:var(--ink-2)}
.step b{color:var(--ink)}
.m-meta{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:20px}
@media(max-width:640px){.m-meta{grid-template-columns:1fr}}
.m-meta .box{background:#f7f9ff;border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:13px}
.m-meta .box span{color:var(--ink-3);font-size:12px;display:block}
.m-meta .box b{color:var(--ink)}
.m-effects{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px}
.m-effect{background:var(--green-soft);border-radius:10px;padding:12px 14px}
.m-effect .b{font-size:12px;color:#0b7a4b;font-weight:700}
.m-effect .a{font-size:17px;font-weight:900;color:#0b7a4b;margin-top:2px}
.m-effect .a s{color:var(--ink-3);font-size:12px;font-weight:600;margin-right:6px}
.m-challenges li{font-size:13.5px;color:var(--ink-2);margin-left:18px;margin-bottom:6px}

/* ---------- Method ---------- */
.method-wrap{background:linear-gradient(135deg,#0e1f4d,#16307a);border-radius:22px;padding:44px 40px;color:#fff;position:relative;overflow:hidden}
.method-wrap::before{content:"";position:absolute;inset:0;background:radial-gradient(500px 260px at 90% 0%,rgba(255,176,32,.18),transparent 60%)}
.method-wrap .sec-head h2{color:#fff}
.method-wrap .sec-head p{color:#bcc9f5}
.m-list{position:relative;display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px;margin-top:8px}
.m-item{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:20px;backdrop-filter:blur(4px)}
.m-item .idx{font-size:26px;font-weight:900;color:#ffd57a;line-height:1}
.m-item h4{font-size:15.5px;margin:10px 0 6px}
.m-item p{font-size:13px;color:#c6d2f8}
.m-item .src{margin-top:10px;font-size:11px;color:#8fa4e8}
.m-item .src b{color:#ffd57a}

/* ---------- Catalog ---------- */
.cat-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:12px}
.cat-item{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:15px 18px;display:flex;gap:13px;align-items:flex-start;transition:.2s}
.cat-item.included{border-color:#bfe6d4;background:linear-gradient(0deg,rgba(15,169,104,.05),rgba(15,169,104,.05)),#fff}
.cat-item .cno{flex:none;font-size:11px;font-weight:900;color:var(--blue);background:#e8efff;border-radius:6px;padding:3px 8px;margin-top:2px}
.cat-item .ct{font-size:13.5px;font-weight:700;color:var(--ink);line-height:1.5}
.cat-item .cm{font-size:11.5px;color:var(--ink-3);margin-top:3px}
.st{font-size:10.5px;font-weight:800;border-radius:99px;padding:2px 8px;margin-left:8px;white-space:nowrap}
.st.ok{background:var(--green-soft);color:#0b7a4b}
.st.part{background:var(--amber-soft);color:#8a5a00}
.st.wait{background:#eef0f5;color:var(--ink-3)}

footer{background:var(--blue-dark);color:#9fb0e0;padding:36px 0;font-size:12.5px}
footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.to-top{position:fixed;right:22px;bottom:22px;width:42px;height:42px;border-radius:50%;background:var(--blue);color:#fff;border:none;font-size:18px;cursor:pointer;box-shadow:0 6px 16px rgba(43,92,255,.4);display:none;z-index:60}
.to-top.show{display:block}

/* ============================================================
   fdehub 追加样式
   base.css 是从单文件可视化稿里原样抽出来的，不改；
   这里只放「拆成多页之后」新出现的东西：搜索框、案例详情页、
   上一例/下一例、页脚版权区、打印样式。
   ============================================================ */

/* ---------- 顶部导航：加一个返回站点的品牌链接 ---------- */
.brand a { color: inherit; text-decoration: none; }
.nav-links a.cta {
  background: var(--blue); color: #fff; font-weight: 700;
}
.nav-links a.cta:hover { background: var(--blue-deep); color: #fff; }

/* ---------- 搜索框 ---------- */
.searchbar {
  display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
  margin-bottom: 14px;
}
.searchbar input {
  flex: 1 1 260px; min-width: 0;
  font: inherit; font-size: 14px;
  padding: 10px 14px;
  border: 1px solid var(--line); border-radius: 10px;
  background: #fff; color: var(--ink);
  box-shadow: var(--shadow);
}
.searchbar input:focus {
  outline: none; border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(43, 92, 255, .12);
}
.searchbar .hit {
  font-size: 12.5px; color: var(--ink-3); white-space: nowrap;
}
.searchbar .hit b { color: var(--blue-deep); }
.empty-hint {
  display: none; padding: 40px 0; text-align: center;
  color: var(--ink-3); font-size: 14px;
}
.empty-hint.show { display: block; }

/* 筛选器分组标题 */
.filter-group { margin-bottom: 10px; }
.filter-group > .fg-label {
  font-size: 12px; font-weight: 700; color: var(--ink-3);
  margin-right: 8px; letter-spacing: .5px;
}
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.fbtn {
  font-size: 12.5px; font-weight: 600; padding: 5px 13px;
  border: 1px solid var(--line); border-radius: 99px;
  background: #fff; color: var(--ink-2); cursor: pointer; transition: .2s;
}
.fbtn:hover { border-color: var(--blue); color: var(--blue); }

/* 案例卡整块可点 */
.case-card > a.card-link {
  color: inherit; text-decoration: none; display: flex;
  flex-direction: column; flex: 1;
}
.case-card .detail-btn { display: block; text-align: center; text-decoration: none; }

/* ---------- 案例详情页 ---------- */
.case-hero { color: #fff; padding: 46px 0 40px; position: relative; overflow: hidden; }
.case-hero::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(520px 260px at 88% 10%, rgba(255, 255, 255, .16), transparent 62%);
}
.case-hero .wrap { position: relative; }
.case-hero .no {
  font-size: 12.5px; font-weight: 900; letter-spacing: 2px; opacity: .92;
}
.case-hero h1 {
  font-size: clamp(24px, 3.6vw, 36px); font-weight: 900;
  line-height: 1.32; margin-top: 8px; letter-spacing: .5px;
}
.case-hero .route {
  margin-top: 14px; font-size: 13.5px; display: inline-block;
  background: rgba(255, 255, 255, .16); border: 1px solid rgba(255, 255, 255, .28);
  border-radius: 9px; padding: 6px 13px;
}
.case-hero .route b { color: #ffd57a; }
.case-hero .hero-tags { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 7px; }
.case-hero .hero-tags span {
  font-size: 11.5px; font-weight: 700; padding: 3px 10px; border-radius: 99px;
  background: rgba(255, 255, 255, .15); border: 1px solid rgba(255, 255, 255, .22);
}
.crumb { font-size: 12.5px; padding: 12px 0; color: var(--ink-3); }
.crumb a { color: var(--blue); text-decoration: none; }
.crumb a:hover { text-decoration: underline; }

.case-main { padding: 34px 0 60px; }
.case-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 26px; align-items: start; }
@media (max-width: 900px) { .case-layout { grid-template-columns: 1fr; } }
.case-side { position: sticky; top: 76px; display: grid; gap: 14px; }
@media (max-width: 900px) { .case-side { position: static; } }

.side-card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px 20px; box-shadow: var(--shadow);
}
.side-card h4 { font-size: 13px; color: var(--ink-3); font-weight: 700; margin-bottom: 10px; letter-spacing: .5px; }
.side-card .who { display: flex; align-items: center; gap: 11px; }
.side-card .who b { font-size: 15px; color: var(--ink); display: block; }
.side-card .who span { font-size: 12px; color: var(--ink-3); display: block; margin-top: 2px; }
.side-card .aud { font-size: 13px; color: var(--ink-2); }

.blk {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 24px 26px; box-shadow: var(--shadow);
  margin-bottom: 18px;
}
.blk > h2 {
  font-size: 17px; color: var(--blue-dark); font-weight: 900;
  margin-bottom: 14px; display: flex; align-items: center; gap: 9px;
}
.blk > h2::before {
  content: ""; width: 9px; height: 9px; border-radius: 2px; background: var(--amber); flex: none;
}
.blk p { font-size: 14.5px; color: var(--ink-2); }
.blk .steps .step p { font-size: 14px; }
.blk .m-challenges li { font-size: 14px; }

.notice {
  background: var(--amber-soft); border: 1px solid #f3dcae; color: #7a5200;
  border-radius: 12px; padding: 13px 16px; font-size: 13px; margin-bottom: 18px;
}
.notice b { color: #5c3d00; }

/* 上一例 / 下一例 */
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 26px; }
@media (max-width: 640px) { .pager { grid-template-columns: 1fr; } }
.pager a {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 14px 18px; text-decoration: none; display: block; transition: .2s;
}
.pager a:hover { border-color: var(--blue); transform: translateY(-2px); }
.pager .dir { font-size: 11.5px; color: var(--ink-3); font-weight: 700; letter-spacing: 1px; }
.pager .tt { font-size: 14px; color: var(--ink); font-weight: 700; margin-top: 4px; line-height: 1.5; }
.pager .nx { text-align: right; }
.pager .ph { visibility: hidden; }

/* ---------- 页脚 ---------- */
footer .fnote { max-width: 760px; line-height: 1.8; }
footer a { color: #cbd8ff; }
footer .src {
  margin-top: 10px; font-size: 12px; color: #7f92c8;
}

/* ---------- 打印 ---------- */
@media print {
  nav, .to-top, .pager, .searchbar, .filters, .scroll-hint { display: none !important; }
  body { background: #fff; }
  .blk, .side-card { box-shadow: none; break-inside: avoid; }
  .case-hero { color: #000 !important; background: none !important; }
  .case-hero .no, .case-hero .route { color: #000 !important; }
}

/* ---------- 窄屏微调 ---------- */
@media (max-width: 560px) {
  .wrap { padding: 0 16px; }
  .nav-in { padding: 10px 16px; gap: 12px; }
  .nav-links { gap: 2px; }
  .nav-links a { padding: 5px 9px; font-size: 12.5px; }
  section { padding: 44px 0; }
  .blk { padding: 20px 18px; }
}

/* 筛选靠 el.hidden 控制。.case-card 自己是 display:flex，作者样式会盖掉
   浏览器默认的 [hidden]{display:none}，所以这里显式补一条。 */
[hidden] { display: none !important; }