/* 山宝找厂AI —— 深蓝+金色矿山机械行业风格 */
:root {
  --blue-900: #0b1f3a;
  --blue-800: #0e2a4a;
  --blue-700: #143a63;
  --blue-100: #e8eef6;
  --gold: #d9a441;
  --gold-light: #ecc06a;
  --ink: #1d2b3a;
  --ink-2: #5a6b7d;
  --line: #e3e9f0;
  --bg: #f5f7fa;
  --white: #ffffff;
  --radius: 12px;
  --shadow: 0 6px 24px rgba(11, 31, 58, 0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}
.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }
a { color: var(--blue-700); text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

/* ---------- 顶部导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: var(--blue-900);
  border-bottom: 2px solid var(--gold);
}
.nav-in { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.logo { color: var(--white); font-size: 20px; font-weight: 700; letter-spacing: 1px; }
.logo span { color: var(--gold); }
.logo-ai {
  font-style: normal; font-size: 11px; background: var(--gold); color: var(--blue-900);
  border-radius: 4px; padding: 1px 5px; margin-left: 6px; vertical-align: middle; font-weight: 700;
}
.nav-links a { color: #c8d5e5; margin-left: 22px; font-size: 15px; }
.nav-links a:hover { color: var(--gold-light); }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(160deg, var(--blue-900) 0%, var(--blue-800) 55%, var(--blue-700) 100%);
  padding: 96px 0 110px;
  text-align: center;
  transition: padding 0.3s ease;
}
.hero.compact { padding: 28px 0; }
.hero.compact .sub, .hero.compact .chips { display: none; }
.hero h1 { color: var(--white); font-size: 40px; letter-spacing: 2px; margin-bottom: 14px; }
.hero.compact h1 { font-size: 22px; margin-bottom: 12px; }
.hero .sub { color: var(--gold-light); font-size: 17px; letter-spacing: 4px; margin-bottom: 36px; }

.search-box {
  display: flex; max-width: 640px; margin: 0 auto;
  background: var(--white); border-radius: 999px; overflow: hidden;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}
.search-box input {
  flex: 1; border: none; outline: none; padding: 16px 24px; font-size: 16px; color: var(--ink);
  min-width: 0;
}
.search-box button {
  border: none; background: var(--gold); color: var(--blue-900);
  font-size: 16px; font-weight: 700; padding: 0 34px; transition: background 0.2s;
}
.search-box button:hover { background: var(--gold-light); }

.chips { margin-top: 22px; display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.chip {
  border: 1px solid rgba(217, 164, 65, 0.55); background: rgba(255, 255, 255, 0.06);
  color: #d5e0ee; border-radius: 999px; padding: 7px 16px; font-size: 13px;
  transition: all 0.2s;
}
.chip:hover { background: var(--gold); color: var(--blue-900); border-color: var(--gold); }

/* ---------- 对话流 ---------- */
.chat { padding: 28px 0 120px; }
.chat-in { display: flex; flex-direction: column; gap: 18px; }

.msg { display: flex; }
.msg-user { justify-content: flex-end; }
.bubble {
  max-width: 82%; border-radius: var(--radius); padding: 14px 18px;
  font-size: 15px; white-space: pre-wrap; word-break: break-word;
}
.msg-user .bubble {
  background: var(--blue-800); color: var(--white);
  border-bottom-right-radius: 4px;
}
.msg-ai .bubble {
  background: var(--white); color: var(--ink);
  border: 1px solid var(--line); border-bottom-left-radius: 4px;
  box-shadow: var(--shadow);
}
.msg-ai .bubble.streaming::after {
  content: ""; display: inline-block; width: 8px; height: 16px;
  background: var(--gold); margin-left: 3px; vertical-align: -2px;
  animation: blink 0.9s steps(2) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ---------- 工厂卡片 ---------- */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 12px; max-width: 82%; }
.card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 18px; cursor: pointer; transition: all 0.2s; box-shadow: var(--shadow);
}
.card:hover { border-color: var(--gold); transform: translateY(-2px); }
.card h4 { font-size: 16px; color: var(--blue-800); margin-bottom: 6px; }
.card .loc { font-size: 13px; color: var(--ink-2); margin-bottom: 8px; }
.card .loc b { color: var(--gold); font-weight: 600; }
.card .tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }
.tag {
  font-size: 12px; background: var(--blue-100); color: var(--blue-700);
  border-radius: 4px; padding: 2px 8px;
}
.tag.gold { background: #fbf1dc; color: #9a6d1f; }
.card .meta { font-size: 12px; color: var(--ink-2); display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 底部输入栏 ---------- */
.composer {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
  background: rgba(255, 255, 255, 0.96); border-top: 1px solid var(--line);
  backdrop-filter: blur(6px); padding: 12px 0;
}
.composer-in { display: flex; gap: 10px; }
.composer input {
  flex: 1; border: 1px solid var(--line); border-radius: 999px; outline: none;
  padding: 12px 20px; font-size: 15px; min-width: 0; background: var(--white);
}
.composer input:focus { border-color: var(--blue-700); }
.composer button {
  border: none; background: var(--blue-800); color: var(--white);
  border-radius: 999px; padding: 0 28px; font-size: 15px; font-weight: 600;
}
.composer button:disabled { opacity: 0.5; cursor: not-allowed; }
.composer button:hover:not(:disabled) { background: var(--blue-700); }

/* ---------- 详情抽屉 ---------- */
.drawer-mask {
  position: fixed; inset: 0; z-index: 60; background: rgba(11, 31, 58, 0.45);
  opacity: 0; pointer-events: none; transition: opacity 0.25s;
}
.drawer-mask.open { opacity: 1; pointer-events: auto; }
.drawer {
  position: fixed; top: 0; right: 0; bottom: 0; z-index: 61;
  width: min(480px, 94vw); background: var(--white);
  box-shadow: -8px 0 30px rgba(11, 31, 58, 0.2);
  transform: translateX(105%); transition: transform 0.28s ease;
  display: flex; flex-direction: column;
}
.drawer.open { transform: translateX(0); }
.drawer-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; background: var(--blue-900); color: var(--white);
  border-bottom: 2px solid var(--gold);
}
.drawer-head h3 { font-size: 17px; }
.drawer-close {
  border: none; background: none; color: var(--white); font-size: 26px; line-height: 1;
}
.drawer-body { padding: 20px; overflow-y: auto; flex: 1; }
.d-section { margin-bottom: 18px; }
.d-name { font-size: 19px; color: var(--blue-800); font-weight: 700; }
.d-short { color: var(--gold); font-size: 14px; margin-left: 8px; }
.d-grid { display: grid; grid-template-columns: 96px 1fr; row-gap: 8px; font-size: 14px; margin-top: 12px; }
.d-grid dt { color: var(--ink-2); }
.d-grid dd { color: var(--ink); word-break: break-all; }
.d-grid a { color: var(--blue-700); border-bottom: 1px dashed var(--blue-700); }
.d-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.d-label { font-size: 13px; color: var(--ink-2); margin-bottom: 2px; }
.d-intro { font-size: 14px; color: var(--ink); background: var(--bg); border-radius: 8px; padding: 12px 14px; }
.d-src { font-size: 12px; color: #9aa8b6; margin-top: 14px; }

/* ---------- 页脚 ---------- */
.footer { background: var(--blue-900); color: #8fa3ba; text-align: center; padding: 22px 0; font-size: 13px; }

/* ---------- 响应式 ---------- */
@media (max-width: 720px) {
  .hero { padding: 64px 0 72px; }
  .hero h1 { font-size: 28px; }
  .hero .sub { font-size: 14px; letter-spacing: 2px; }
  .search-box button { padding: 0 20px; }
  .cards { grid-template-columns: 1fr; max-width: 100%; }
  .bubble { max-width: 94%; }
}