/* ============================================================
   蓝元界 AI · aicockpit.com.cn · Nova Edge Design System
   与 ailaosong.com 统一视觉：Navy #0A1B3D · Edge Blue #0A5FEF
   说明：本文件重写为 Nova Edge 设计系统，沿用站内原有 class 名，
   HTML 结构与 app.js 交互逻辑保持不变。
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@500;600;700&display=swap');

:root {
  /* ── 主色系：深海军蓝 ── */
  --navy-900: #050E28;
  --navy-800: #0A1B3D;
  --navy-700: #14264A;
  --navy-600: #243657;

  /* ── 强调色：电光蓝 ── */
  --blue:      #0A5FEF;
  --blue-600:  #1A6BFF;
  --blue-pale: #E7EFFD;
  --blue-mist: #F2F6FD;
  --blue-soft: #6FA0FF;   /* 深色背景上的浅蓝 */

  /* ── 文字 / 背景色阶 ── */
  --ink:    #0A1B3D;
  --ink-2:  #46556F;
  --ink-3:  #7C8AA3;
  --paper:  #FBFCFE;
  --mist:   #EEF2F9;
  --line:   #DCE4F0;
  --line-2: #C9D5E6;

  /* ── 语义色 ── */
  --green:  #1A7A4A;
  --red:    #C0392B;
  --amber:  #C8852B;
  --gold:   #C8A35B;

  /* 兼容旧变量名 */
  --bg: var(--paper);
  --surface: #ffffff;
  --text: var(--ink);
  --muted: var(--ink-2);

  /* ── 字体 ── */
  --serif: 'Noto Serif SC', 'Songti SC', 'STSong', serif;
  --sans:  'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;

  /* ── 布局 ── */
  --maxw: 1180px;
  --pad: 28px;
  --r-sm: 6px;
  --r: 12px;
  --r-lg: 20px;

  --shadow-sm: 0 1px 3px rgba(10,27,61,.06), 0 1px 2px rgba(10,27,61,.04);
  --shadow:    0 8px 30px rgba(10,27,61,.08);
  --shadow-lg: 0 20px 60px rgba(10,27,61,.14);
}

/* ── Reset & base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: var(--blue); text-decoration: none; transition: color .15s; }
a:hover { color: var(--blue-600); }
::selection { background: var(--blue); color: #fff; }

/* ============================================================
   HERO（深色 navy + 电光蓝径向光晕 + 集成导航）
   ============================================================ */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--navy-900);
  color: #E7EEF9;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(900px 500px at 78% 6%, rgba(10,95,239,.30), transparent 60%),
    radial-gradient(700px 600px at 8% 100%, rgba(10,95,239,.12), transparent 55%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute; top: 0; right: -5%; width: 46%; height: 100%;
  background: repeating-linear-gradient(105deg, rgba(255,255,255,.025) 0 2px, transparent 2px 28px);
  pointer-events: none;
}

.topbar {
  position: relative; z-index: 3;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 18px var(--pad);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand img {
  height: 42px; width: auto;
  background: #fff;
  border-radius: 9px;
  padding: 4px;
  object-fit: contain;
}
.brand div { display: grid; gap: 1px; }
.brand strong { font-family: var(--sans); font-size: 15px; font-weight: 700; color: #fff; letter-spacing: .01em; }
.brand span { color: rgba(231,238,249,.6); font-size: 12.5px; font-weight: 500; }

.navlinks { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.navlinks a, .auth-nav-button {
  font-family: var(--sans);
  font-size: 13.5px; font-weight: 500;
  color: rgba(231,238,249,.82);
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid transparent;
  background: transparent;
  text-decoration: none;
  transition: all .18s;
}
.navlinks a:hover { color: #fff; background: rgba(255,255,255,.08); }
.auth-nav-button {
  cursor: pointer;
  font-weight: 600;
  color: #fff;
  background: var(--blue);
  border-radius: 100px;
  padding: 9px 20px;
}
.auth-nav-button:hover { background: var(--blue-600); box-shadow: 0 8px 24px rgba(10,95,239,.32); }
.auth-nav-button.is-logged-in { background: rgba(255,255,255,.16); border-color: rgba(255,255,255,.28); }

.hero-body {
  position: relative; z-index: 2;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 70px var(--pad) 92px;
}

/* ============================================================
   SIGNATURE：斜切 edge stripe（品牌指纹）
   ============================================================ */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 18px;
}
.eyebrow::before {
  content: '';
  width: 26px; height: 9px;
  background: var(--blue);
  clip-path: polygon(18% 0, 100% 0, 82% 100%, 0 100%);
}
.hero .eyebrow, .crawler-hero .eyebrow { color: var(--blue-soft); }
.hero .eyebrow::before, .crawler-hero .eyebrow::before { background: var(--blue-soft); }

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1 {
  font-family: var(--serif);
  font-weight: 700;
  max-width: 860px;
  font-size: clamp(34px, 5.2vw, 56px);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: #fff;
}
.lead {
  font-family: var(--sans);
  max-width: 700px;
  margin: 22px 0 0;
  font-size: 18px;
  line-height: 1.7;
  color: var(--ink-2);
}
.hero .lead, .crawler-hero .lead { color: rgba(231,238,249,.8); }

.hero-actions { margin-top: 32px; display: flex; gap: 14px; flex-wrap: wrap; }

/* ============================================================
   BUTTONS（胶囊按钮，与模版一致）
   ============================================================ */
.primary, .secondary, .open-link, .inline-link, form button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 600;
  padding: 13px 28px;
  border-radius: 100px;
  border: 1.5px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: all .2s cubic-bezier(.2,.7,.3,1);
  white-space: nowrap;
}
.primary, form button { background: var(--blue); color: #fff; }
.primary:hover, form button:hover { background: var(--blue-600); color: #fff; box-shadow: 0 8px 24px rgba(10,95,239,.32); transform: translateY(-1px); }
.secondary { background: transparent; color: #fff; border-color: rgba(255,255,255,.28); }
.secondary:hover { background: #fff; color: var(--navy-800); border-color: #fff; }
.open-link { background: var(--navy-800); color: #fff; padding: 11px 22px; font-size: 14px; }
.open-link:hover { background: var(--navy-700); color: #fff; transform: translateY(-1px); }
.inline-link { background: var(--navy-800); color: #fff; padding: 10px 20px; font-size: 14px; }
.inline-link:hover { background: var(--navy-700); color: #fff; transform: translateY(-1px); }
.button-link { width: max-content; }

/* ============================================================
   MAIN & SECTIONS（白底节奏 + 签名分隔）
   ============================================================ */
main { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad); }
.section { padding: 64px 0; }
.section + .section { border-top: 1px solid var(--line); }
.section-head { margin-bottom: 36px; }
.section-head h2 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(26px, 3.4vw, 38px);
  line-height: 1.25;
  letter-spacing: -.005em;
  color: var(--ink);
}
.section-head p {
  color: var(--ink-2);
  max-width: 760px;
  line-height: 1.7;
  font-size: 16px;
  margin-top: 14px;
}

/* ============================================================
   APP CARDS
   ============================================================ */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 22px; }
.app-card {
  display: flex;
  flex-direction: column;
  min-height: 430px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  border-top: 3px solid var(--blue);
  padding: 28px;
  transition: border-color .2s, box-shadow .2s, transform .2s;
}
.app-card:hover { border-color: var(--line-2); border-top-color: var(--blue); box-shadow: var(--shadow); transform: translateY(-2px); }
.accent-blue  { border-top-color: var(--blue); }
.accent-green { border-top-color: var(--green); }
.accent-red   { border-top-color: var(--red); }
.accent-amber { border-top-color: var(--amber); }

.card-top { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.tag, .status {
  display: inline-flex;
  align-items: center;
  border-radius: 100px;
  padding: 4px 12px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .04em;
  background: var(--blue-pale);
  color: var(--blue);
}
.status { background: #E6F6EC; color: var(--green); }

.app-card h3 {
  font-family: var(--sans);
  margin: 16px 0 8px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
}
.app-card p, .guide p, .message-list p { color: var(--ink-2); line-height: 1.65; font-size: 14px; }
dl { margin: 12px 0 16px; }
dt { margin-top: 12px; font-weight: 700; font-size: 13px; color: var(--ink); }
dd { margin: 4px 0 0; color: var(--ink-2); line-height: 1.6; font-size: 13.5px; }
code {
  font-family: 'SFMono-Regular', Menlo, Consolas, monospace;
  background: var(--mist);
  color: var(--blue);
  border-radius: 5px;
  padding: 2px 7px;
  font-size: 12.5px;
  word-break: break-all;
}
.open-link { margin-top: auto; }

/* ============================================================
   GUIDE / TRANSFORMATION / ACCOUNT GRID
   ============================================================ */
.guide-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.guide-grid > div {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 28px;
  transition: border-color .2s, box-shadow .2s, transform .2s;
}
.guide-grid > div:hover { border-color: var(--line-2); box-shadow: var(--shadow); transform: translateY(-2px); }
.guide-grid strong { display: block; margin-bottom: 10px; font-family: var(--sans); font-size: 17px; font-weight: 700; color: var(--ink); }
.guide-grid p { color: var(--ink-2); line-height: 1.65; font-size: 14px; }
.account-entry-grid > div { display: flex; flex-direction: column; }
.account-entry-grid .inline-link { width: max-content; margin-top: auto; }

/* ============================================================
   WECHAT ENTRY
   ============================================================ */
.wechat-entry {
  display: grid;
  grid-template-columns: 170px repeat(2, minmax(0, 1fr));
  gap: 22px;
  align-items: stretch;
}
.wechat-entry > div {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 28px;
}
.wechat-entry strong { display: block; margin-bottom: 10px; font-size: 17px; font-weight: 700; color: var(--ink); }
.wechat-entry p { color: var(--ink-2); line-height: 1.65; font-size: 14px; }
.wechat-logo-card { display: grid; place-items: center; background: var(--mist); }
.wechat-logo-card img { width: 116px; height: 116px; border-radius: var(--r); object-fit: cover; }

/* ============================================================
   MESSAGE / FORMS
   ============================================================ */
.message-layout { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr); gap: 24px; align-items: start; }
.message-form, .message-list {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 28px;
}
.message-form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.message-form label, .auth-form label {
  display: grid;
  gap: 7px;
  font-weight: 600;
  font-size: 13.5px;
  color: var(--ink-2);
}
.message-form .wide { grid-column: 1 / -1; }
input, select, textarea {
  width: 100%;
  border: 1.5px solid var(--line);
  border-radius: var(--r-sm);
  padding: 12px 14px;
  font: inherit;
  font-size: 14.5px;
  background: #fff;
  color: var(--ink);
  outline: none;
  transition: border-color .15s;
}
input:focus, select:focus, textarea:focus { border-color: var(--blue); }
textarea { resize: vertical; min-height: 110px; }
form button { width: max-content; }
.form-result { margin: 0; color: var(--green); font-weight: 700; align-self: center; }
.message-list h3 { font-family: var(--sans); font-size: 18px; font-weight: 700; margin-bottom: 16px; color: var(--ink); }
.message-item { border-top: 1px solid var(--line); padding: 14px 0; }
.message-item:first-child { border-top: 0; }
.message-item strong { display: block; margin-bottom: 4px; color: var(--ink); }
.message-meta { color: var(--ink-3); font-size: 12px; margin-bottom: 6px; }

/* ============================================================
   FOOTER（深 navy）
   ============================================================ */
footer {
  background: var(--navy-900);
  color: rgba(231,238,249,.7);
  padding: 40px var(--pad);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  text-align: center;
}
footer strong { color: #fff; font-size: 15px; font-weight: 700; }
footer span { color: rgba(231,238,249,.55); font-size: 13.5px; }
footer a { color: rgba(231,238,249,.6); text-decoration: none; font-size: 13px; }
footer a:hover { color: #fff; }

/* ============================================================
   CRAWLER PAGE
   ============================================================ */
.crawler-hero {
  position: relative;
  overflow: hidden;
  background: var(--navy-900);
  color: #E7EEF9;
}
.crawler-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(800px 400px at 75% 0, rgba(10,95,239,.24), transparent 60%);
  pointer-events: none;
}
.crawler-main { padding-top: 48px; }
.workflow-grid, .download-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}
.workflow-card, .download-card, .config-panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 28px;
}
.workflow-card strong, .download-card strong { display: block; margin-bottom: 10px; font-size: 16px; font-weight: 700; color: var(--ink); }
.workflow-card p, .download-card p, .config-panel p, .config-panel li { color: var(--ink-2); line-height: 1.65; font-size: 14px; }
.download-card { display: flex; flex-direction: column; min-height: 230px; }
.download-card .open-link { width: max-content; }
.config-panel code { display: inline-block; margin: 2px 0; }
.notice {
  border-left: 4px solid var(--amber);
  background: rgba(200,133,43,.08);
  color: #6B4A12;
  padding: 14px 16px;
  border-radius: var(--r-sm);
}

/* ============================================================
   ADMIN PAGE
   ============================================================ */
.admin-page { background: var(--paper); }
.admin-header {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 36px var(--pad) 14px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 18px;
}
.admin-header h1 { color: var(--ink); font-size: clamp(26px, 3.4vw, 38px); }
.admin-header .eyebrow { color: var(--blue); }
.admin-header p:not(.eyebrow) { color: var(--ink-2); margin: 10px 0 0; }
.admin-header .secondary { color: var(--ink); border-color: var(--line-2); background: #fff; }
.admin-header .secondary:hover { background: var(--navy-800); color: #fff; border-color: var(--navy-800); }
.admin-grid { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad) 48px; display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.7fr); gap: 22px; align-items: start; }
.admin-form { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 28px; }
.account-policy {
  background: var(--navy-800);
  color: #E7EEF9;
  border-radius: var(--r-lg);
  padding: 28px;
}
.account-policy h2 { font-family: var(--serif); margin-bottom: 12px; font-size: 20px; color: #fff; }
.account-policy p, .account-policy dd { color: rgba(231,238,249,.75); }
.form-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.ghost-button, .small-button {
  border: 1.5px solid var(--line-2);
  background: #fff;
  color: var(--ink);
  border-radius: 100px;
  padding: 9px 18px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all .18s;
}
.ghost-button:hover, .small-button:hover { border-color: var(--navy-800); background: var(--navy-800); color: #fff; }
.small-button { padding: 6px 12px; font-size: 12px; margin: 2px; }
.account-table-wrap {
  overflow-x: auto;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
}
.account-table { width: 100%; border-collapse: collapse; min-width: 920px; }
.account-table th, .account-table td { padding: 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; font-size: 13px; }
.account-table th { background: var(--mist); color: var(--ink-2); font-weight: 700; }
.account-table td { color: var(--ink-2); }
.account-table small { display: block; color: var(--ink-3); margin-top: 4px; line-height: 1.45; }

/* ============================================================
   老宋AI 助理 浮窗
   ============================================================ */
.laosong-chat { position: fixed; right: 24px; bottom: 24px; z-index: 80; }
.laosong-launcher {
  position: relative;
  width: 64px; height: 64px;
  border: 0;
  border-radius: 20px;
  color: #fff;
  background: linear-gradient(135deg, var(--navy-900) 0%, var(--blue) 100%);
  box-shadow: 0 18px 46px rgba(10,27,61,.3);
  cursor: pointer;
  overflow: hidden;
}
.laosong-orbit { position: absolute; inset: 8px; border: 1px solid rgba(255,255,255,.36); border-radius: 16px; transform: rotate(18deg); }
.laosong-mark { position: relative; display: grid; place-items: center; width: 100%; height: 100%; font-family: var(--serif); font-size: 20px; font-weight: 700; }
.laosong-panel {
  position: absolute;
  right: 0; bottom: 78px;
  width: min(390px, calc(100vw - 32px));
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: rgba(255,255,255,.98);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(16px);
}
.laosong-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px;
  color: #fff;
  background: linear-gradient(135deg, var(--navy-800), var(--blue));
}
.laosong-head div { display: grid; gap: 3px; }
.laosong-head strong { font-size: 16px; }
.laosong-head span { color: rgba(255,255,255,.72); font-size: 12px; }
.laosong-head button {
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 8px;
  width: 32px; height: 32px;
  background: rgba(255,255,255,.12);
  color: #fff;
  font-size: 21px;
  cursor: pointer;
}
.laosong-body {
  display: grid; gap: 10px;
  max-height: 360px;
  overflow-y: auto;
  padding: 16px;
  background: linear-gradient(180deg, var(--blue-mist), #fff);
}
.laosong-msg {
  max-width: 88%;
  border-radius: var(--r);
  padding: 10px 13px;
  line-height: 1.55;
  font-size: 14px;
  white-space: pre-wrap;
  word-break: break-word;
}
.laosong-msg.bot { justify-self: start; background: var(--blue-pale); color: var(--ink); }
.laosong-msg.user { justify-self: end; background: var(--navy-800); color: #fff; }
.laosong-msg.loading { color: var(--ink-3); }
.laosong-prompts { display: flex; gap: 8px; flex-wrap: wrap; padding: 0 16px 12px; }
.laosong-prompts button {
  border: 1px solid var(--line);
  border-radius: 100px;
  background: #fff;
  color: var(--blue);
  padding: 7px 13px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all .15s;
}
.laosong-prompts button:hover { border-color: var(--blue); background: var(--blue-pale); }
.laosong-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  padding: 14px;
  border-top: 1px solid var(--line);
  background: #fff;
}
.laosong-form input { padding: 10px 12px; }
.laosong-form button { border-radius: 100px; padding: 0 20px; background: var(--blue); color: #fff; border: 0; cursor: pointer; }
.laosong-form button:hover { background: var(--blue-600); }

/* ============================================================
   登录弹窗
   ============================================================ */
.auth-modal {
  position: fixed; inset: 0; z-index: 120;
  display: grid; place-items: center;
  padding: 18px;
  background: rgba(5,14,40,.6);
}
.auth-modal[hidden] { display: none; }
.auth-dialog {
  width: min(420px, 100%);
  overflow: hidden;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow-lg);
}
.auth-head {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 14px;
  padding: 20px;
  color: #fff;
  background: linear-gradient(135deg, var(--navy-800), var(--blue));
}
.auth-head div { display: grid; gap: 5px; }
.auth-head strong { font-size: 17px; }
.auth-head span { color: rgba(255,255,255,.78); font-size: 12px; line-height: 1.5; }
.auth-head button {
  width: 32px; height: 32px;
  border: 1px solid rgba(255,255,255,.26);
  border-radius: 8px;
  background: rgba(255,255,255,.12);
  color: #fff;
  font-size: 21px;
  cursor: pointer;
}
.auth-form { display: grid; gap: 16px; padding: 24px; }
.auth-form button { width: 100%; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 940px) {
  .cards, .guide-grid, .message-layout, .workflow-grid, .download-grid, .admin-grid { grid-template-columns: 1fr; }
  .wechat-entry { grid-template-columns: 1fr; }
  .topbar { flex-direction: column; align-items: flex-start; }
  .navlinks { flex-wrap: wrap; }
  .section { padding: 52px 0; }
}
@media (max-width: 620px) {
  .hero-body { padding: 44px var(--pad) 56px; }
  .lead { font-size: 16px; }
  .message-form { grid-template-columns: 1fr; }
  .laosong-chat { right: 16px; bottom: 16px; }
}