/* 赋得科技 Foundex 视觉：取自公司 PPT 模板（深海军蓝 + 亮蓝、六边形底纹、方角色块） */
:root {
  --navy-900: #0a1734;
  --navy: #0a1f48;
  --navy-ink: #1a2238;
  --blue: #0b64ff;
  --blue-deep: #123a8c;
  --blue-soft: #6fa5ff;
  --blue-tint: #9cc0ff;

  --bg: #f4f7fc;
  --surface: #ffffff;
  --panel: #edf3fc;
  --panel-2: #e3ecfa;
  --text: #1a2238;
  --text-2: #5d6a82;
  --text-3: #8893a8;
  --border: #dde4f0;
  --accent: var(--blue);
  --accent-ink: #ffffff;
  --selected: #eaf1fc;
  --danger: #d14343;
  --danger-soft: #fdeeee;
  --ok: #12b3a6;
  --focus: #0b64ff;
  --shadow: 0 1px 2px rgba(10, 31, 72, .05);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #081229;
    --surface: #0e1c3b;
    --panel: #12244a;
    --panel-2: #172c57;
    --text: #e7edf8;
    --text-2: #a3b0c8;
    --text-3: #7c89a3;
    --border: #22365f;
    --accent: #3d86ff;
    --selected: #14305f;
    --danger: #ff7b7b;
    --danger-soft: #3a1d26;
    --focus: #6fa5ff;
    --shadow: none;
  }
}
:root[data-theme="dark"] {
  --bg: #081229; --surface: #0e1c3b; --panel: #12244a; --panel-2: #172c57; --text: #e7edf8; --text-2: #a3b0c8;
  --text-3: #7c89a3; --border: #22365f; --accent: #3d86ff; --selected: #14305f; --danger: #ff7b7b;
  --danger-soft: #3a1d26; --focus: #6fa5ff; --shadow: none;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.65 Arial, "Microsoft YaHei", "微软雅黑", "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", sans-serif;
}
button, input, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
img { display: block; max-width: 100%; }

/* ---------- 顶栏：深蓝色带 + 六边形底纹 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: var(--navy) url("assets/hex-band.jpg") right center / auto 100% no-repeat;
  color: #fff;
  box-shadow: 0 2px 10px rgba(10, 23, 52, .25);
}
.topbar-inner {
  max-width: 1160px; margin: 0 auto; padding: 12px 16px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.brand { display: flex; align-items: center; gap: 14px; min-width: 0; }
.brand-logo { height: 26px; width: auto; flex-shrink: 0; }
.brand-sep { width: 1px; height: 22px; background: rgba(255, 255, 255, .28); flex-shrink: 0; }
.brand-text { display: flex; flex-direction: column; min-width: 0; }
.brand-title { font-weight: 700; font-size: 16px; letter-spacing: .02em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.save-state { font-size: 12px; color: var(--blue-tint); min-height: 1.2em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.top-actions { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.progress { display: flex; align-items: center; gap: 8px; }
.progress-bar { width: 140px; height: 6px; background: rgba(255, 255, 255, .16); overflow: hidden; }
.progress-bar span { display: block; height: 100%; width: 0; background: var(--blue-soft); transition: width .25s; }
.progress-text { font-size: 12px; color: #d6e3fb; white-space: nowrap; font-variant-numeric: tabular-nums; }

.btn {
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  padding: 8px 18px; cursor: pointer; line-height: 1.4; border-radius: 2px; font-weight: 600;
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn-primary { background: var(--blue); border-color: var(--blue); color: #fff; }
.btn-primary:hover { background: #2a78ff; border-color: #2a78ff; color: #fff; }
.btn-primary:disabled { opacity: .6; cursor: progress; }
.btn-link { border: 0; background: none; color: var(--accent); padding: 0; cursor: pointer; font-weight: 600; }
.btn-link:hover { text-decoration: underline; }

@media (max-width: 760px) {
  .topbar-inner { padding: 10px 16px; gap: 10px; }
  .brand-logo { height: 20px; }
  .brand-sep, .save-state { display: none; }
  .brand-title { font-size: 14px; }
  .progress-bar { width: 56px; }
  .btn-primary.top { padding: 7px 14px; }
}
@media (max-width: 420px) { .brand-text { display: none; } }

/* ---------- 布局 ---------- */
.layout {
  max-width: 1160px; margin: 0 auto; padding: 28px 16px 40px;
  display: grid; grid-template-columns: 236px minmax(0, 1fr); gap: 28px; align-items: start;
}
.sidenav { position: sticky; top: 82px; display: flex; flex-direction: column; gap: 2px; }
.nav-item {
  display: flex; align-items: center; gap: 10px; width: 100%;
  border: 0; background: none; text-align: left; padding: 8px 12px; cursor: pointer;
  color: var(--text-2); border-left: 3px solid transparent;
}
.nav-item:hover { background: var(--panel); color: var(--text); }
.nav-item[aria-current="true"] { background: var(--navy); color: #fff; border-left-color: var(--blue); font-weight: 600; }
.nav-item[aria-current="true"] .nav-no { color: var(--blue-tint); }
.nav-item[aria-current="true"] .nav-badge { color: #c9d8f5; }
.nav-no { font-family: Arial, sans-serif; font-weight: 700; font-size: 12px; width: 20px; color: var(--accent); font-variant-numeric: tabular-nums; }
.nav-name { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nav-badge { font-size: 11px; color: var(--text-3); font-variant-numeric: tabular-nums; }
.nav-badge.todo { color: var(--danger); }
.nav-item[aria-current="true"] .nav-badge.todo { color: #ffb4b4; }
.nav-badge.done::before { content: "✓"; color: var(--ok); font-weight: 700; }

@media (max-width: 760px) {
  .layout { grid-template-columns: minmax(0, 1fr); padding-top: 0; gap: 14px; }
  .sidenav {
    position: sticky; top: 52px; z-index: 10; flex-direction: row; overflow-x: auto;
    margin: 0 -16px; padding: 8px 16px; background: var(--bg); border-bottom: 1px solid var(--border);
    scrollbar-width: none;
  }
  .sidenav::-webkit-scrollbar { display: none; }
  .nav-item { width: auto; flex-shrink: 0; padding: 5px 10px; border-left: 0; border-bottom: 3px solid transparent; }
  .nav-item[aria-current="true"] { border-bottom-color: var(--blue); }
  .nav-badge { display: none; }
}

/* ---------- 封面（基本信息页顶部） ---------- */
.cover {
  position: relative; overflow: hidden; color: #fff; padding: 34px 32px 30px; margin-bottom: 14px;
  background: var(--navy-900) url("assets/hex-cover.jpg") right center / cover no-repeat;
}
.cover::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(10, 23, 52, .92) 0%, rgba(10, 23, 52, .55) 60%, rgba(10, 23, 52, .1) 100%); }
.cover > * { position: relative; }
.cover-kicker { color: var(--blue-tint); font-size: 13px; font-weight: 600; letter-spacing: .08em; }
.cover h1 { font-size: 32px; line-height: 1.25; margin: 8px 0 10px; font-weight: 800; letter-spacing: .01em; }
.cover p { margin: 0; color: #c9d8f5; max-width: 34em; }
.cover-meta { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: 20px; font-size: 13px; color: #d6e3fb; }
.cover-meta b { color: #fff; font-size: 18px; margin-right: 4px; font-family: Arial, sans-serif; }
@media (max-width: 560px) { .cover { padding: 26px 20px 22px; } .cover h1 { font-size: 26px; } }

/* ---------- 章节标题：仿 PPT「编号 | 标题」 ---------- */
.section-head { margin: 2px 0 18px; padding-bottom: 14px; border-bottom: 2px solid var(--navy); }
.section-head h1 { font-size: 26px; line-height: 1.3; margin: 0; font-weight: 800; color: var(--text); display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.section-no { color: var(--accent); font-family: Arial, sans-serif; }
.section-bar { color: var(--accent); font-weight: 400; }
.section-desc { color: var(--text-2); margin: 8px 0 0; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .section-head { border-bottom-color: var(--blue); } }
:root[data-theme="dark"] .section-head { border-bottom-color: var(--blue); }

/* ---------- 题目卡片：方角色块 ---------- */
.card {
  background: var(--surface); border: 1px solid var(--border);
  padding: 20px 22px; margin-bottom: 12px; box-shadow: var(--shadow);
}
.card.child { margin-left: 24px; border-left: 3px solid var(--blue-tint); }
.card.child.lv3 { margin-left: 48px; }
@media (max-width: 760px) { .card.child { margin-left: 10px; } .card.child.lv3 { margin-left: 20px; } .card { padding: 16px; } }
.card.error { border-color: var(--danger); box-shadow: inset 3px 0 0 var(--danger); }
.card.flash { animation: flash 1.2s ease; }
@keyframes flash { 0%, 40% { box-shadow: 0 0 0 3px var(--focus); } 100% { box-shadow: var(--shadow); } }

.q-title { display: flex; gap: 10px; align-items: baseline; margin: 0 0 4px; font-size: 16px; font-weight: 700; line-height: 1.5; }
.q-no { color: var(--accent); font-family: Arial, sans-serif; font-weight: 700; font-size: 13px; font-variant-numeric: tabular-nums; flex-shrink: 0; }
.req { color: var(--danger); margin-left: 3px; }
.q-hint { color: var(--text-2); font-size: 13px; margin: 8px 0 4px; padding: 8px 12px; background: var(--panel); border-left: 3px solid var(--blue); }
.q-err { color: var(--danger); font-size: 13px; margin: 8px 0 0; }

.options { display: grid; gap: 6px; margin-top: 12px; }
.opt {
  display: flex; align-items: flex-start; gap: 10px; padding: 10px 12px;
  border: 1px solid var(--border); cursor: pointer; background: var(--surface);
  transition: background .12s, border-color .12s;
}
.opt:hover { border-color: var(--blue-tint); background: var(--panel); }
.opt input { margin: 4px 0 0; accent-color: var(--blue); width: 16px; height: 16px; flex-shrink: 0; }
.opt.checked { border-color: var(--accent); background: var(--selected); box-shadow: inset 3px 0 0 var(--accent); font-weight: 600; }
.opt.disabled { opacity: .45; cursor: not-allowed; }

.field { width: 100%; padding: 10px 12px; border: 1px solid var(--border); background: var(--surface); margin-top: 12px; border-radius: 0; }
.field:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px rgba(11, 100, 255, .15); }
textarea.field { min-height: 80px; resize: vertical; }
.num-wrap { display: flex; align-items: center; gap: 8px; margin-top: 12px; }
.num-wrap .field { margin: 0; max-width: 200px; }
.unit { color: var(--text-2); }

.note-toggle { margin-top: 10px; font-size: 13px; }
.note-toggle .btn-link { font-size: 13px; }
.note-box textarea { min-height: 60px; font-size: 14px; background: var(--panel); }

/* ---------- 基本信息 ---------- */
.basic-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 18px; }
@media (max-width: 560px) { .basic-grid { grid-template-columns: 1fr; } }
.basic-grid label { display: block; font-weight: 700; font-size: 14px; }
.basic-grid .field { margin-top: 6px; }
.basic-grid .full { grid-column: 1 / -1; }

.rules { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 14px; }
@media (max-width: 900px) { .rules { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .rules { gap: 8px; } .rule { padding: 10px 12px; } .rule b { font-size: 13px; } .rule span { font-size: 12px; line-height: 1.5; } }
.rule { background: var(--panel); padding: 14px 16px; border-top: 3px solid var(--navy); }
.rule b { display: block; color: var(--text); font-size: 14px; margin-bottom: 4px; }
.rule span { color: var(--text-2); font-size: 13px; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .rule { border-top-color: var(--blue); } }
:root[data-theme="dark"] .rule { border-top-color: var(--blue); }

.card-title { font-size: 15px; font-weight: 700; margin: 0 0 14px; display: flex; align-items: center; gap: 8px; }
.card-title::before { content: ""; width: 4px; height: 16px; background: var(--blue); }

.pager { display: flex; justify-content: space-between; gap: 12px; margin-top: 22px; }

/* ---------- 检查并提交 ---------- */
.missing-list { list-style: none; padding: 0; margin: 10px 0 0; display: grid; gap: 6px; }
.missing-list button { text-align: left; font-weight: 500; }
.consent { display: flex; gap: 10px; align-items: flex-start; margin: 0 0 16px; color: var(--text-2); font-size: 14px; }
.consent input { margin-top: 4px; accent-color: var(--blue); }
.ok-box { border-color: var(--ok); box-shadow: inset 3px 0 0 var(--ok); }
.ok-box strong { color: var(--ok); }
.muted { color: var(--text-2); font-size: 13px; }

/* ---------- 页脚 ---------- */
.site-footer { max-width: 1160px; margin: 0 auto; padding: 18px 16px 40px; display: flex; align-items: center; justify-content: space-between; gap: 12px; color: var(--text-3); font-size: 12px; border-top: 1px solid var(--border); }
.site-footer img { height: 18px; width: auto; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .site-footer img { filter: brightness(0) invert(.85); } }
:root[data-theme="dark"] .site-footer img { filter: brightness(0) invert(.85); }

.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px); opacity: 0; pointer-events: none;
  background: var(--navy); color: #fff; padding: 10px 18px; font-size: 14px; border-left: 3px solid var(--blue);
  transition: opacity .2s, transform .2s; max-width: calc(100% - 32px);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

pre.payload { background: var(--panel); padding: 12px; overflow: auto; max-height: 320px; font-size: 12px; }