* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --navy: #0c2340;
  --navy-2: #14345c;
  --navy-3: #1d4477;
  --gold: #c9a227;
  --gold-d: #a8871f;
  --blue: #1a6fc4;
  --blue-l: #eaf2fa;
  --ink: #22303f;
  --muted: #5d6b7a;
  --line: #dde5ee;
  --bg: #fff;
  --bg-alt: #f4f7fb;
}
html { scroll-behavior: smooth; }
body { font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif; color: var(--ink); background: var(--bg); line-height: 1.65; }
[dir="rtl"] body { font-family: Tahoma, "Segoe UI", Arial, sans-serif; }
.wrap { max-width: 1140px; margin: 0 auto; padding: 0 24px; }
.wrap.narrow { max-width: 680px; }
img { vertical-align: middle; }

/* topbar */
.topbar { background: var(--navy); color: #c8d6e6; font-size: 13px; }
.topbar-inner { display: flex; justify-content: space-between; align-items: center; min-height: 36px; gap: 12px; flex-wrap: wrap; }
.tb-co { letter-spacing: .2px; }
.tb-mail { color: var(--gold); text-decoration: none; font-weight: 600; }
.tb-mail:hover { color: #e6c85a; }

/* nav */
.nav { border-bottom: 1px solid var(--line); position: sticky; top: 0; background: rgba(255,255,255,.97); backdrop-filter: blur(8px); z-index: 60; }
.nav-inner { display: flex; align-items: center; gap: 18px; height: 68px; }
.logo { font-size: 23px; font-weight: 800; color: var(--navy); text-decoration: none; letter-spacing: -.3px; margin-inline-end: auto; }
.logo span { color: var(--blue); }
.mainnav { display: flex; align-items: center; gap: 22px; }
.mainnav a { color: var(--ink); text-decoration: none; font-size: 15px; font-weight: 500; white-space: nowrap; }
.mainnav a:hover { color: var(--blue); }
.navtoggle { display: none; background: none; border: 1px solid var(--line); border-radius: 8px; font-size: 20px; padding: 4px 12px; cursor: pointer; }

/* language switcher */
.langwrap { position: relative; }
.langbtn { display: inline-flex; align-items: center; gap: 8px; background: var(--bg-alt); border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; cursor: pointer; font-size: 14px; color: var(--ink); font-family: inherit; }
.langbtn:hover { border-color: var(--blue); }
.langbtn img { border-radius: 2px; box-shadow: 0 0 0 1px rgba(0,0,0,.08); }
.langmenu { display: none; position: absolute; top: calc(100% + 8px); inset-inline-end: 0; background: #fff; border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 16px 40px rgba(12,35,64,.18); padding: 8px; min-width: 210px; max-height: 70vh; overflow: auto; z-index: 100; }
.langmenu.open { display: block; }
.lg-item { display: flex; align-items: center; gap: 10px; padding: 8px 12px; border-radius: 8px; text-decoration: none; color: var(--ink); font-size: 14.5px; }
.lg-item:hover { background: var(--blue-l); }
.lg-item img { border-radius: 2px; box-shadow: 0 0 0 1px rgba(0,0,0,.08); }

/* buttons */
.btn { display: inline-block; background: var(--blue); color: #fff; padding: 12px 28px; border-radius: 8px; text-decoration: none; font-weight: 600; font-size: 15px; border: none; cursor: pointer; transition: background .15s; }
.btn:hover { background: var(--navy-2); }
.btn-sm { padding: 8px 18px; }
.btn-ghost { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,.55); }
.btn-ghost:hover { background: rgba(255,255,255,.1); }

/* hero */
.hero { background: linear-gradient(155deg, var(--navy) 0%, var(--navy-2) 60%, #1d4477 100%); color: #fff; padding: 88px 0 72px; position: relative; }
.hero::after { content: ""; position: absolute; inset-inline-end: 0; top: 0; bottom: 0; width: 42%; background: radial-gradient(600px 380px at 80% 30%, rgba(201,162,39,.18), transparent 70%); pointer-events: none; }
.eyebrow { text-transform: uppercase; letter-spacing: 2.5px; font-size: 12.5px; color: var(--gold); font-weight: 700; margin-bottom: 16px; }
.hero h1 { font-size: 50px; line-height: 1.12; font-weight: 800; letter-spacing: -.8px; max-width: 760px; }
.lead { margin: 22px 0 30px; font-size: 18px; color: #d9e5f2; max-width: 760px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-cta .btn { background: var(--gold); color: var(--navy); }
.hero-cta .btn:hover { background: #e0b93a; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 56px; }
.stat { border-inline-start: 3px solid var(--gold); padding-inline-start: 16px; }
.stat strong { font-size: 30px; font-weight: 800; display: block; line-height: 1.15; }
.stat span { color: #b9cde2; font-size: 14px; }

/* sections */
.section { padding: 84px 0; }
.section.alt { background: var(--bg-alt); }
h2 { font-size: 33px; color: var(--navy); letter-spacing: -.4px; margin-bottom: 10px; }
.section-sub { color: var(--muted); margin-bottom: 40px; font-size: 16.5px; max-width: 860px; }
.section-sub a { color: var(--blue); font-weight: 600; }
.mail { color: #9fc3e8; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.card { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 28px; transition: box-shadow .15s, transform .15s; }
.section.alt .card { border-color: #fff; box-shadow: 0 2px 10px rgba(12,35,64,.05); }
.card:hover { box-shadow: 0 12px 32px rgba(12,35,64,.10); transform: translateY(-2px); }
.card h3 { color: var(--navy); font-size: 18.5px; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15px; }

/* clusters */
.cl-toprow { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.cl-badge { background: var(--navy); color: var(--gold); font-weight: 700; font-size: 14px; padding: 8px 18px; border-radius: 999px; white-space: nowrap; }
.filters { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 28px; }
.chip { background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 8px 18px; font-size: 14px; cursor: pointer; color: var(--ink); font-family: inherit; }
.chip:hover { border-color: var(--blue); color: var(--blue); }
.chip.on { background: var(--navy); border-color: var(--navy); color: #fff; }
.cl-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.cl-card { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 20px 22px; }
.cl-card:hover { border-color: var(--blue); }
.cl-head { display: flex; flex-direction: column; gap: 2px; margin-bottom: 8px; }
.cl-place { font-weight: 700; color: var(--navy); font-size: 15.5px; }
.cl-prod { color: var(--gold-d); font-weight: 600; font-size: 13.5px; text-transform: uppercase; letter-spacing: .4px; }
.cl-card p { color: var(--muted); font-size: 14px; }

/* steps */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.step { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 22px 18px; }
.step span { display: inline-flex; width: 34px; height: 34px; border-radius: 50%; background: var(--gold); color: var(--navy); align-items: center; justify-content: center; font-weight: 800; margin-bottom: 12px; }
.step h3 { font-size: 16px; color: var(--navy); margin-bottom: 6px; }
.step p { font-size: 13.5px; color: var(--muted); }

/* about */
.about-body { max-width: 860px; display: grid; gap: 16px; font-size: 16.5px; color: var(--ink); }
.about-body p { border-inline-start: 3px solid var(--gold); padding-inline-start: 18px; }

/* contact */
.contact { background: linear-gradient(155deg, var(--navy) 0%, var(--navy-2) 100%); color: #fff; }
.contact h2 { color: #fff; }
.contact .section-sub { color: #c6d8ea; }
form { background: #fff; border-radius: 14px; padding: 30px; color: var(--ink); }
form label { display: block; font-size: 14px; font-weight: 600; color: var(--navy); margin-bottom: 14px; }
form input, form textarea { width: 100%; margin-top: 6px; padding: 11px 13px; border: 1px solid var(--line); border-radius: 8px; font-size: 15px; font-family: inherit; }
form input:focus, form textarea:focus { outline: 2px solid var(--blue); border-color: transparent; }
form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.hidden { position: absolute; left: -9999px; }
[dir="rtl"] .hidden { left: auto; right: -9999px; }
form .btn { margin-top: 4px; }

/* footer */
footer { background: #081a30; color: #a9bccf; padding: 52px 0 24px; font-size: 14.5px; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1.4fr 1fr; gap: 36px; padding-bottom: 30px; border-bottom: 1px solid #1e344c; }
.logo-f { color: #fff; margin-bottom: 8px; font-size: 20px; }
.logo-f span { color: #5b9bd5; }
footer a { color: #9fc3e8; text-decoration: none; }
footer a:hover { text-decoration: underline; }
.ft-langs { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 14px; }
.ft-langs .lg-item { padding: 4px 0; font-size: 13.5px; color: #a9bccf; }
.copy { padding-top: 18px; font-size: 13px; color: #6c8095; }

@media (max-width: 1000px) {
  .grid, .grid.two, .cl-grid { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 38px; }
  .mainnav { display: none; position: absolute; top: 68px; inset-inline-start: 0; inset-inline-end: 0; background: #fff; flex-direction: column; align-items: flex-start; padding: 18px 24px; border-bottom: 1px solid var(--line); box-shadow: 0 20px 40px rgba(12,35,64,.12); }
  .mainnav.open { display: flex; }
  .navtoggle { display: block; }
}
@media (max-width: 620px) {
  .grid, .grid.two, .cl-grid, .steps, .footer-inner { grid-template-columns: 1fr; }
  form .row { grid-template-columns: 1fr; }
  .topbar-inner { justify-content: center; }
}

/* ===== 产业带详情页 ===== */
.cl-card{display:block;color:inherit;text-decoration:none;transition:transform .15s,box-shadow .15s;cursor:pointer}
.cl-card:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(11,31,59,.14)}
.cl-more{display:inline-block;margin-top:8px;font-size:.82rem;font-weight:600;color:var(--accent,#b08d2f)}
.cl-hero{padding:70px 0 50px}
.cl-para{max-width:80ch;margin:0 0 18px;line-height:1.8;color:#2c3a4d}
.cl-h2{margin:34px 0 14px;font-size:1.35rem}
.cl-adv{padding-left:0;list-style:none;display:grid;gap:12px}
.cl-adv li{position:relative;padding-left:30px;line-height:1.6;color:#2c3a4d}
.cl-adv li::before{content:"✓";position:absolute;left:0;top:0;color:#b08d2f;font-weight:800}
.cl-note{margin-top:30px;padding:20px 24px;border-left:4px solid #b08d2f;background:#faf6ec;border-radius:8px}
.cl-note h3{margin:0 0 8px;font-size:1.05rem}
.cl-note p{margin:0;line-height:1.7;color:#4a5666}
.pgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px}
.pcard{background:#fff;border:1px solid #e3e8ef;border-radius:12px;padding:20px 22px;display:flex;flex-direction:column;transition:box-shadow .15s}
.pcard:hover{box-shadow:0 6px 20px rgba(11,31,59,.10)}
.pcard h3{margin:0 0 6px;font-size:1.02rem;line-height:1.35}
.pdesc{margin:0 0 12px;font-size:.88rem;line-height:1.6;color:#5a6675}
.ptable{width:100%;border-collapse:collapse;font-size:.82rem;margin-top:auto}
.ptable td{padding:6px 0;border-top:1px solid #eef1f5;vertical-align:top;line-height:1.45}
.ptable td:first-child{width:36%;color:#7a8694;font-weight:600;white-space:nowrap;padding-right:10px}
.ptable td:last-child{color:#22303f}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;justify-content:center}
.cl-pager{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:34px 0;flex-wrap:wrap;font-size:.92rem}
.cl-pager a{color:#123a6b;font-weight:600;text-decoration:none}
.cl-pager a:hover{text-decoration:underline}