/* QDOS 新官网共享样式 — 藏蓝 + 金色工业风 */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --navy: #0d2137; --navy-2: #16324f; --navy-3: #1d3f63;
  --accent: #d9a851; --accent-2: #c4913a;
  --bg: #f7f9fb; --card: #ffffff; --line: #e2e8ef;
  --text: #23303e; --muted: #6b7a8a;
  --shadow: 0 4px 18px rgba(13, 33, 55, .08);
}
html { scroll-behavior: smooth; }
body { font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", Arial, sans-serif; color: var(--text); background: var(--bg); line-height: 1.7; }
img { max-width: 100%; }

/* ===== 导航 ===== */
.nav { position: fixed; top: 0; left: 0; right: 0; height: 64px; background: var(--navy); display: flex; align-items: center; justify-content: space-between; padding: 0 5vw; z-index: 100; box-shadow: 0 2px 12px rgba(0,0,0,.18); }
.nav .logo { color: #fff; font-size: 17px; font-weight: 700; letter-spacing: 1px; text-decoration: none; }
.nav .logo span { color: var(--accent); }
.nav .links { display: flex; gap: 4px; align-items: center; flex-wrap: wrap; }
.nav a { color: #c9d6e2; text-decoration: none; font-size: 14.5px; padding: 8px 14px; border-radius: 6px; transition: .25s; }
.nav a:hover { color: #fff; background: rgba(255,255,255,.09); }
.nav a.active { color: #fff; background: rgba(217,168,81,.18); }
.nav a.cta { background: var(--accent); color: #fff; margin-left: 8px; font-weight: 600; }
.nav a.cta:hover { background: var(--accent-2); }
.nav a.lang { border: 1px solid rgba(255,255,255,.35); color: #fff; padding: 6px 12px; }
@media (max-width: 900px) { .nav { height: auto; flex-wrap: wrap; padding: 10px 4vw; } .nav .links { padding-top: 8px; } }

/* ===== HERO ===== */
.hero { background: linear-gradient(135deg, var(--navy) 0%, var(--navy-3) 60%, #2a5480 100%); color: #fff; padding: 130px 5vw 90px; position: relative; overflow: hidden; }
.hero::after { content: ""; position: absolute; right: -120px; top: -120px; width: 420px; height: 420px; border-radius: 50%; border: 60px solid rgba(217,168,81,.12); }
.hero-inner { max-width: 1100px; position: relative; z-index: 1; }
.hero .kicker { color: var(--accent); font-size: 13px; letter-spacing: 4px; text-transform: uppercase; margin-bottom: 14px; }
.hero h1 { font-size: clamp(28px, 4.4vw, 46px); line-height: 1.25; font-weight: 800; }
.hero h1 em { color: var(--accent); font-style: normal; }
.hero p.sub { margin: 20px 0 8px; font-size: clamp(15px, 1.6vw, 18px); color: #d7e2ec; max-width: 720px; }
.hero .en { color: #9fb4c8; font-size: 14px; font-style: italic; margin-bottom: 26px; }
.hero .btns { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 20px; }
.btn { display: inline-block; padding: 12px 30px; border-radius: 6px; text-decoration: none; font-weight: 600; font-size: 15px; transition: .25s; }
.btn.gold { background: var(--accent); color: #fff; }
.btn.gold:hover { background: var(--accent-2); transform: translateY(-2px); }
.btn.ghost { border: 1.5px solid rgba(255,255,255,.5); color: #fff; }
.btn.ghost:hover { border-color: var(--accent); color: var(--accent); }

/* QDOS 释义 */
.qdos-chips { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 30px; }
.qdos-chip { background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.16); border-radius: 8px; padding: 10px 16px; font-size: 13px; color: #e5edf4; }
.qdos-chip b { color: var(--accent); }

/* ===== 数据条 ===== */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 1px; background: var(--navy); margin-top: 0; }
.stat { background: #fff; text-align: center; padding: 26px 12px; }
.stat .num { font-size: clamp(22px, 2.6vw, 32px); font-weight: 800; color: var(--navy); }
.stat .num em { color: var(--accent); font-style: normal; }
.stat .lbl { font-size: 12.5px; color: var(--muted); margin-top: 4px; }

/* ===== 通用区块 ===== */
.section { padding: 72px 5vw; max-width: 1180px; margin: 0 auto; }
.section-head { text-align: center; margin-bottom: 44px; }
.section-head .tag { color: var(--accent-2); font-size: 13px; letter-spacing: 3px; text-transform: uppercase; font-weight: 700; }
.section-head h2 { font-size: clamp(24px, 3vw, 32px); color: var(--navy); margin: 8px 0 10px; }
.section-head p { color: var(--muted); max-width: 700px; margin: 0 auto; font-size: 15px; }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.grid-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
@media (max-width: 900px) { .grid-2, .grid-3, .grid-4, .grid-5 { grid-template-columns: 1fr; } }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 28px; box-shadow: var(--shadow); transition: .3s; }
.card:hover { transform: translateY(-4px); border-color: rgba(217,168,81,.55); }
.card .ico { width: 46px; height: 46px; border-radius: 10px; background: linear-gradient(135deg, var(--navy-3), var(--navy)); color: var(--accent); display: flex; align-items: center; justify-content: center; font-size: 20px; font-weight: 800; margin-bottom: 16px; }
.card h3 { color: var(--navy); font-size: 18px; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 14.5px; }
.card ul { margin: 10px 0 0 18px; color: var(--muted); font-size: 14px; }
.card ul li { margin: 5px 0; }
.card .more { display: inline-block; margin-top: 14px; color: var(--accent-2); font-weight: 600; text-decoration: none; font-size: 14px; }
.card .more:hover { text-decoration: underline; }

/* 链条（三步交付模式） */
.chain { display: flex; align-items: stretch; gap: 0; margin: 36px 0 10px; flex-wrap: wrap; }
.chain .step { flex: 1; min-width: 220px; background: #fff; border: 1px solid var(--line); padding: 22px 24px; position: relative; }
.chain .step:first-child { border-radius: 10px 0 0 10px; }
.chain .step:last-child { border-radius: 0 10px 10px 0; }
.chain .step .no { font-size: 12px; color: var(--accent-2); font-weight: 800; letter-spacing: 2px; }
.chain .step h4 { color: var(--navy); margin: 6px 0 4px; font-size: 16px; }
.chain .step p { color: var(--muted); font-size: 13px; }
.chain .step::after { content: "→"; position: absolute; right: -12px; top: 50%; transform: translateY(-50%); color: var(--accent); font-size: 20px; font-weight: 800; z-index: 2; }
.chain .step:last-child::after { content: ""; }

/* ===== 工艺流程条 ===== */
.process { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 8px; }
.pstep { background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 14px 10px; width: 128px; text-align: center; box-shadow: var(--shadow); }
.pstep .n { width: 30px; height: 30px; border-radius: 50%; background: var(--navy); color: var(--accent); font-weight: 800; display: flex; align-items: center; justify-content: center; margin: 0 auto 8px; font-size: 14px; }
.pstep b { display: block; color: var(--navy); font-size: 14px; }
.pstep span { font-size: 11.5px; color: var(--muted); display: block; margin-top: 3px; line-height: 1.4; }

/* ===== 表格 ===== */
.tbl-wrap { overflow-x: auto; background: #fff; border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); }
table.doc { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 560px; }
table.doc thead { background: var(--navy); color: #fff; }
table.doc th { padding: 12px 16px; text-align: left; font-weight: 600; }
table.doc td { padding: 11px 16px; border-top: 1px solid var(--line); color: var(--text); }
table.doc tbody tr:nth-child(even) { background: #f4f7fa; }
table.doc td b { color: var(--navy); }

/* 徽章/标签 */
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.chip { background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 7px 16px; font-size: 13px; color: var(--navy); font-weight: 600; }
.chip.hl { background: #fdf6e8; border-color: rgba(217,168,81,.5); color: var(--accent-2); }

/* ===== 公司卡 ===== */
.base-card { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 26px; box-shadow: var(--shadow); position: relative; }
.base-card .badge { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 1px; padding: 5px 12px; border-radius: 6px; background: #eaf1f8; color: var(--navy-3); margin-bottom: 14px; }
.base-card.gold .badge { background: #faf1df; color: var(--accent-2); }
.base-card .co-logo { height: 44px; object-fit: contain; display: block; margin-bottom: 14px; }
.base-card h3 { color: var(--navy); font-size: 18px; margin-bottom: 4px; }
.base-card .en-name { color: var(--muted); font-size: 12.5px; font-style: italic; margin-bottom: 14px; }
.base-card ul { margin-left: 18px; color: var(--muted); font-size: 13.5px; }
.base-card ul li { margin: 5px 0; }
.base-card .goldline { border-top: 3px solid var(--accent); margin-bottom: 16px; }

/* ===== 时间线 ===== */
.timeline { position: relative; margin: 30px 0 0; padding-left: 26px; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(var(--accent), var(--navy-3)); }
.tl-item { position: relative; padding: 0 0 26px 18px; }
.tl-item::before { content: ""; position: absolute; left: -26px; top: 6px; width: 14px; height: 14px; border-radius: 50%; background: #fff; border: 3px solid var(--accent); }
.tl-item .year { font-weight: 800; color: var(--accent-2); font-size: 15px; }
.tl-item b { display: block; color: var(--navy); font-size: 16px; margin: 2px 0; }
.tl-item p { color: var(--muted); font-size: 14px; max-width: 640px; }

/* ===== 认证卡 ===== */
.cert { display: flex; gap: 12px; align-items: flex-start; }
.cert .mark { flex: none; width: 44px; height: 44px; border-radius: 50%; background: var(--navy); color: var(--accent); font-weight: 800; display: flex; align-items: center; justify-content: center; font-size: 11px; }
.cert b { color: var(--navy); display: block; font-size: 15px; }
.cert span { color: var(--muted); font-size: 13.5px; }

/* ===== CTA ===== */
.cta-band { background: linear-gradient(120deg, var(--navy), var(--navy-3)); color: #fff; padding: 60px 5vw; text-align: center; }
.cta-band h2 { font-size: clamp(22px, 3vw, 30px); margin-bottom: 12px; }
.cta-band p { color: #c9d6e2; max-width: 640px; margin: 0 auto 24px; font-size: 15px; }

/* ===== 内页头部 ===== */
.page-hero { background: linear-gradient(135deg, var(--navy) 0%, var(--navy-3) 100%); color: #fff; padding: 110px 5vw 54px; }
.page-hero .crumb { color: #9fb4c8; font-size: 13px; margin-bottom: 10px; }
.page-hero h1 { font-size: clamp(26px, 3.6vw, 38px); font-weight: 800; }
.page-hero p { color: #d7e2ec; max-width: 760px; margin-top: 12px; font-size: 15.5px; }

/* ===== 图片占位 ===== */
.ph { background: repeating-linear-gradient(45deg, #eceff3, #eceff3 14px, #e3e8ee 14px, #e3e8ee 28px); border: 1.5px dashed #b9c4d0; border-radius: 10px; display: flex; align-items: center; justify-content: center; color: #7d8a98; font-size: 13px; text-align: center; padding: 20px; min-height: 180px; }

/* ===== 联系表单 ===== */
.form { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 30px; box-shadow: var(--shadow); }
.form label { display: block; font-weight: 600; color: var(--navy); font-size: 14px; margin: 14px 0 6px; }
.form input, .form textarea, .form select { width: 100%; border: 1px solid var(--line); border-radius: 8px; padding: 11px 14px; font-size: 14.5px; font-family: inherit; }
.form input:focus, .form textarea:focus { outline: 2px solid rgba(217,168,81,.5); }
.form .submit { margin-top: 22px; background: var(--accent); color: #fff; border: none; padding: 13px 34px; border-radius: 8px; font-size: 15px; font-weight: 700; cursor: pointer; }
.form .submit:hover { background: var(--accent-2); }
.info-line { display: flex; gap: 14px; align-items: flex-start; margin: 14px 0; }
.info-line .ico { flex: none; width: 40px; height: 40px; border-radius: 8px; background: #eaf1f8; display: flex; align-items: center; justify-content: center; font-size: 18px; }
.info-line b { color: var(--navy); display: block; font-size: 14.5px; }
.info-line span { color: var(--muted); font-size: 14px; }
.info-line a { color: var(--accent-2); text-decoration: none; font-weight: 600; }
.info-line a:hover { text-decoration: underline; }

/* ===== 页脚 ===== */
.footer { background: var(--navy); color: #9fb4c8; padding: 56px 5vw 26px; }
.footer .cols { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 34px; max-width: 1180px; margin: 0 auto; }
@media (max-width: 800px) { .footer .cols { grid-template-columns: 1fr; } }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 12px; }
.footer a { color: #9fb4c8; text-decoration: none; font-size: 13.5px; display: block; margin: 6px 0; }
.footer a:hover { color: var(--accent); }
.footer .copy { border-top: 1px solid rgba(255,255,255,.12); margin-top: 34px; padding-top: 20px; text-align: center; font-size: 12.5px; max-width: 1180px; margin-left: auto; margin-right: auto; }