/* ============================================================
   AI 面试（/careers/interview）——页面由 scripts/build-site.mjs + site-content/careers.mjs 生成，
   面试本身由 assets/js/interview.js 画（docs/careers-interview.md）。
   面分层（docs/site-design.md）：区块是灰面，面上的卡是白色浮起的卡，控件用 --fill；不画四边框；
   强调只用信号橙（选中的任务、计时快到、当前部分）。类名一律 iv- 开头，颜色只用 site.css 的变量。
   ============================================================ */

.iv-hero { padding-bottom: clamp(8px, 2vw, 24px); }
.iv-sec { padding-top: clamp(16px, 3vw, 40px); padding-bottom: clamp(96px, 12vw, 160px); }

/* ---------- 预约页：左边说明，右边开始 ---------- */
.iv-book { display: grid; grid-template-columns: minmax(0, 1.7fr) minmax(300px, 1fr); gap: clamp(20px, 3vw, 40px); align-items: start; }
.iv-book[hidden] { display: none; }
.iv-main { display: grid; gap: 12px; min-width: 0; }
.iv-block { padding: clamp(22px, 2.6vw, 32px); border-radius: 28px; background: var(--surface); }
.iv-h2 { font-size: 1.25rem; font-weight: 600; letter-spacing: -0.02em; color: var(--ink-strong); }
.iv-p { margin-top: 8px; font-size: 1rem; line-height: 1.7; color: var(--mut); }

.iv-tasks { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-top: 18px; }
.iv-task { position: relative; display: block; cursor: pointer; }
.iv-task input { position: absolute; opacity: 0; pointer-events: none; }
.iv-task-b { display: grid; gap: 10px; height: 100%; padding: 18px 20px; border-radius: 20px; background: var(--raised); box-shadow: var(--elev-1); transition: box-shadow 0.15s ease, transform 0.2s var(--ease-out); }
.iv-task-b b { font-size: 1.0625rem; font-weight: 600; line-height: 1.4; color: var(--ink-strong); }
.iv-task-m { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; }
.iv-task:hover .iv-task-b { transform: translateY(-1px); box-shadow: var(--elev-2); }
.iv-task input:checked + .iv-task-b { box-shadow: 0 0 0 2px var(--signal), var(--elev-2); }
.iv-task input:focus-visible + .iv-task-b { outline: 2px solid var(--focus); outline-offset: 3px; }

.iv-parts { display: grid; gap: 0; margin: 14px 0 0; padding: 0; list-style: none; }
.iv-part { display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: 4px; padding: 16px 0; }
.iv-part + .iv-part { box-shadow: inset 0 1px 0 var(--line-soft); }
.iv-part-n { font-size: 0.875rem; font-weight: 600; color: var(--signal); font-feature-settings: "tnum" 1; padding-top: 2px; }
.iv-part-b { display: grid; gap: 4px; }
.iv-part-b b { font-size: 1.0625rem; font-weight: 600; color: var(--ink-strong); }
.iv-part-b small { font-size: 0.8125rem; font-weight: 500; color: var(--mut-2); }
.iv-part-b p { font-size: 0.9375rem; line-height: 1.7; color: var(--ink); }

.iv-rules { display: grid; gap: 10px; margin: 14px 0 0; padding: 0; list-style: none; }
.iv-rules li { position: relative; padding-left: 22px; font-size: 0.9875rem; line-height: 1.7; color: var(--ink); }
.iv-rules li::before { content: ""; position: absolute; left: 4px; top: 0.72em; width: 7px; height: 7px; border-radius: 50%; background: var(--signal); }

.iv-side { position: sticky; top: calc(var(--nav-h) + 20px); }
.iv-go { display: grid; gap: 16px; padding: clamp(22px, 2.4vw, 28px); border-radius: 28px; background: var(--raised); box-shadow: var(--ring), var(--elev-2); }
.iv-go-h { font-size: 1.125rem; font-weight: 600; color: var(--ink-strong); }
.iv-prep { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.iv-prep li { display: flex; align-items: center; gap: 10px; font-size: 0.9375rem; color: var(--ink); }
.iv-prep li::before { content: ""; flex: none; width: 18px; height: 18px; border-radius: 50%; background: var(--leaf-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231f8a5b' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 12.5l4 4L18 8'/%3E%3C/svg%3E") center / 12px no-repeat; }
.iv-start { width: 100%; justify-content: center; }
.iv-sched summary { cursor: pointer; font-size: 0.9375rem; font-weight: 500; color: var(--ink-strong); list-style: none; }
.iv-sched summary::-webkit-details-marker { display: none; }
.iv-sched summary::after { content: " →"; color: var(--signal); }
.iv-sched[open] summary::after { content: " ↓"; }
.iv-sched p { margin-top: 8px; font-size: 0.875rem; line-height: 1.6; color: var(--mut); }
.iv-sched-row { display: flex; gap: 8px; margin-top: 10px; }
.iv-sched-row input { flex: 1; min-width: 0; padding: 10px 12px; border: 0; border-radius: var(--radius); background: var(--fill); color: var(--ink-strong); font: inherit; font-size: 0.9375rem; }
.iv-sched-row input:focus-visible { outline: 2px solid var(--focus); outline-offset: 1px; }
.iv-err { padding: 10px 12px; border-radius: 12px; background: var(--signal-soft); color: var(--signal); font-size: 0.875rem; line-height: 1.55; }
.iv-err[hidden] { display: none; }
.iv-fine { font-size: 0.8125rem; line-height: 1.6; color: var(--mut-2); }

/* 你之前的面试（本机记住的链接） */
.iv-mine { display: grid; gap: 8px; }
.iv-mine b { font-size: 0.875rem; font-weight: 600; color: var(--mut); }
.iv-mine a { display: flex; justify-content: space-between; gap: 10px; padding: 10px 14px; border-radius: 14px; background: var(--fill); color: var(--ink-strong); font-size: 0.875rem; text-decoration: none; }
.iv-mine a:hover { background: var(--fill-hover); }
.iv-mine a span { color: var(--mut); white-space: nowrap; }

/* ---------- 面试本身 ---------- */
.iv-stage { max-width: 820px; margin: 0 auto; }
.iv-stage[hidden] { display: none; }
.iv-frame { border-radius: 32px; background: var(--surface); padding: clamp(14px, 2vw, 22px); }
.iv-bar { position: sticky; top: var(--nav-h); z-index: 5; display: flex; align-items: center; justify-content: space-between; gap: 16px; margin: -4px -6px 0; padding: 8px 12px 16px; border-radius: 0 0 20px 20px; background: var(--surface); }
.iv-who { display: flex; align-items: center; gap: 10px; min-width: 0; }
.iv-ava { flex: none; display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; background: var(--raised); box-shadow: var(--elev-1); }
.iv-ava svg { width: 30px; height: 30px; }
.iv-ip-shell { fill: var(--ink-strong); }
.iv-ip-eyes rect { fill: var(--signal); }
.iv-who-t { display: grid; min-width: 0; }
.iv-who-t b { font-size: 0.9375rem; font-weight: 600; color: var(--ink-strong); }
.iv-who-t small { overflow: hidden; font-size: 0.8125rem; color: var(--mut); white-space: nowrap; text-overflow: ellipsis; }
.iv-steps { display: flex; gap: 6px; }
.iv-steps i { display: flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 999px; background: var(--fill); font-size: 0.8125rem; font-style: normal; font-weight: 500; color: var(--mut); white-space: nowrap; }
.iv-steps i.is-now { background: var(--ink-strong); color: var(--bg); }
.iv-steps i.is-done { color: var(--ink-strong); }
.iv-steps i.is-done::before { content: "✓"; color: var(--leaf); font-weight: 700; }

.iv-timer { position: relative; flex: none; display: grid; place-items: center; width: 56px; height: 56px; }
.iv-timer svg { position: absolute; inset: 0; width: 100%; height: 100%; transform: rotate(-90deg); }
.iv-timer circle { fill: none; stroke-width: 4; }
.iv-timer .iv-track { stroke: var(--line); }
.iv-timer .iv-arc { stroke: var(--ink-strong); stroke-linecap: round; transition: stroke 0.3s ease; }
.iv-timer b { font-size: 0.875rem; font-weight: 600; color: var(--ink-strong); font-feature-settings: "tnum" 1; }
.iv-timer.is-low .iv-arc { stroke: var(--signal); }
.iv-timer.is-low b { color: var(--signal); }
.iv-timer[hidden] { visibility: hidden; display: grid; }

.iv-card { display: grid; gap: 18px; padding: clamp(22px, 3vw, 36px); border-radius: 24px; background: var(--raised); box-shadow: var(--ring), var(--elev-2); animation: iv-in 0.32s var(--ease-out); }
@keyframes iv-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .iv-card { animation: none; } }
.iv-kicker { font-size: 0.8125rem; font-weight: 600; color: var(--signal); letter-spacing: 0.01em; }
.iv-q { font-size: clamp(1.2rem, 2.2vw, 1.5rem); font-weight: 600; line-height: 1.45; letter-spacing: -0.02em; color: var(--ink-strong); -webkit-user-select: none; user-select: none; }
.iv-brief { padding: 16px 18px; border-radius: 16px; background: var(--surface); font-size: 1rem; line-height: 1.8; color: var(--ink); white-space: pre-line; -webkit-user-select: none; user-select: none; }
.iv-hint { font-size: 0.875rem; line-height: 1.6; color: var(--mut); }

.iv-opts { display: grid; gap: 8px; }
.iv-opt { display: grid; grid-template-columns: 28px minmax(0, 1fr); gap: 12px; align-items: start; width: 100%; padding: 14px 16px; border: 0; border-radius: 16px; background: var(--fill); color: var(--ink-strong); font: inherit; font-size: 1rem; line-height: 1.55; text-align: left; cursor: pointer; -webkit-user-select: none; user-select: none; transition: background 0.12s ease, transform 0.12s ease; }
.iv-opt:hover { background: var(--fill-hover); }
.iv-opt:active { transform: scale(0.995); }
.iv-opt kbd { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 8px; background: var(--raised); box-shadow: var(--elev-1); font-family: var(--font-body); font-size: 0.8125rem; font-weight: 600; color: var(--mut); }
.iv-opt small { display: block; margin-top: 2px; font-size: 0.875rem; color: var(--mut); }
.iv-opt[aria-checked="true"] { background: var(--ink-strong); color: var(--bg); }
.iv-opt[aria-checked="true"] kbd { background: var(--signal); color: #fff; box-shadow: none; }
.iv-opt[aria-checked="true"] small { color: inherit; opacity: 0.75; }
.iv-opt:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

.iv-matrix { display: grid; gap: 6px; }
.iv-mrow { display: grid; grid-template-columns: minmax(160px, 1fr) minmax(0, 1.6fr); gap: 12px; align-items: center; padding: 10px 12px; border-radius: 14px; background: var(--surface); }
.iv-mrow > span { font-size: 0.9375rem; font-weight: 500; color: var(--ink-strong); }
.iv-seg { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 4px; }
.iv-seg button { padding: 8px 6px; border: 0; border-radius: 10px; background: var(--raised); color: var(--ink); font: inherit; font-size: 0.8125rem; line-height: 1.3; cursor: pointer; }
.iv-seg button:hover { background: var(--raised-hover); }
.iv-seg button[aria-checked="true"] { background: var(--ink-strong); color: var(--bg); }
.iv-seg button:focus-visible { outline: 2px solid var(--focus); outline-offset: 1px; }

.iv-text { display: grid; gap: 8px; }
.iv-text textarea { width: 100%; min-height: 200px; resize: vertical; padding: 16px 18px; border: 0; border-radius: 16px; background: var(--fill); color: var(--ink-strong); font: inherit; font-size: 1rem; line-height: 1.75; }
.iv-text textarea:focus-visible { outline: 2px solid var(--focus); outline-offset: 1px; }
.iv-text-m { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 16px; font-size: 0.8125rem; color: var(--mut); }
.iv-text-m b { font-weight: 500; color: var(--mut); font-feature-settings: "tnum" 1; }
.iv-guard { display: flex; gap: 8px; align-items: flex-start; padding: 10px 12px; border-radius: 12px; background: var(--surface); font-size: 0.8125rem; line-height: 1.55; color: var(--mut); }
.iv-guard::before { content: "!"; flex: none; display: grid; place-items: center; width: 18px; height: 18px; border-radius: 50%; background: var(--ink-strong); color: var(--bg); font-size: 0.6875rem; font-weight: 700; }
.iv-warn { padding: 10px 12px; border-radius: 12px; background: var(--signal-soft); color: var(--signal); font-size: 0.875rem; font-weight: 500; line-height: 1.55; }
.iv-warn[hidden] { display: none; }

.iv-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; }
.iv-row .btn[disabled] { opacity: 0.45; pointer-events: none; }
.iv-row-note { font-size: 0.8125rem; color: var(--mut-2); }

/* 部分说明、预约成功、评分中、过期 */
.iv-intro h2, .iv-msg h2 { font-size: clamp(1.4rem, 2.6vw, 1.9rem); font-weight: 600; line-height: 1.3; letter-spacing: -0.025em; color: var(--ink-strong); }
.iv-intro p, .iv-msg p { font-size: 1rem; line-height: 1.75; color: var(--ink); }
.iv-intro ul { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.iv-intro li { position: relative; padding-left: 20px; font-size: 0.9375rem; line-height: 1.65; color: var(--ink); }
.iv-intro li::before { content: ""; position: absolute; left: 3px; top: 0.7em; width: 6px; height: 6px; border-radius: 50%; background: var(--signal); }
.iv-link { display: flex; gap: 8px; align-items: center; padding: 10px 12px; border-radius: 14px; background: var(--fill); }
.iv-link code { flex: 1; min-width: 0; overflow: hidden; font-family: var(--font-mono); font-size: 0.8125rem; color: var(--ink-strong); white-space: nowrap; text-overflow: ellipsis; }
.iv-spin { width: 44px; height: 44px; border-radius: 50%; background: conic-gradient(var(--signal) 0 25%, var(--line) 25% 100%); -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 5px), #000 calc(100% - 4px)); mask: radial-gradient(farthest-side, transparent calc(100% - 5px), #000 calc(100% - 4px)); animation: iv-spin 0.9s linear infinite; }
@keyframes iv-spin { to { transform: rotate(1turn); } }
@media (prefers-reduced-motion: reduce) { .iv-spin { animation-duration: 3s; } }

/* ---------- 画像 ---------- */
.iv-result { display: grid; gap: 12px; }
.iv-hero-card { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: clamp(20px, 3vw, 40px); padding: clamp(24px, 3vw, 40px); border-radius: 28px; background: var(--raised); box-shadow: var(--ring), var(--elev-2); }
.iv-type-k { font-size: 0.8125rem; font-weight: 600; color: var(--signal); }
.iv-type-name { margin-top: 8px; font-size: clamp(2rem, 4.4vw, 3.2rem); font-weight: 650; line-height: 1.05; letter-spacing: -0.045em; color: var(--ink-strong); }
.iv-type-name small { display: block; margin-top: 6px; font-size: 1rem; font-weight: 500; letter-spacing: 0; color: var(--mut); }
.iv-type-p { margin-top: 14px; font-size: 1rem; line-height: 1.7; color: var(--ink); }
.iv-type-meta { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.iv-type-meta span { padding: 5px 12px; border-radius: 999px; background: var(--fill); font-size: 0.8125rem; color: var(--ink); }
.iv-type-meta span b { font-weight: 600; color: var(--ink-strong); }
.iv-bars { display: grid; gap: 10px; align-content: center; }
.iv-bar-r { display: grid; grid-template-columns: minmax(96px, 1fr) minmax(0, 2fr) 44px; gap: 10px; align-items: center; font-size: 0.875rem; color: var(--ink); }
.iv-bar-r b { font-weight: 600; color: var(--ink-strong); text-align: right; font-feature-settings: "tnum" 1; }
.iv-meter { height: 8px; border-radius: 999px; background: var(--fill); overflow: hidden; }
.iv-meter i { display: block; height: 100%; border-radius: inherit; background: var(--ink-strong); transform-origin: left; animation: iv-grow 0.8s var(--ease-out) both; }
.iv-bar-r.is-top .iv-meter i { background: var(--signal); }
@keyframes iv-grow { from { transform: scaleX(0); } to { transform: scaleX(1); } }
@media (prefers-reduced-motion: reduce) { .iv-meter i { animation: none; } }

.iv-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.iv-panel { display: grid; gap: 14px; align-content: start; padding: clamp(20px, 2.6vw, 30px); border-radius: 24px; background: var(--raised); box-shadow: var(--ring), var(--elev-1); }
.iv-panel h3 { font-size: 1.0625rem; font-weight: 600; color: var(--ink-strong); }
.iv-dim { display: grid; gap: 6px; }
.iv-dim-h { display: flex; justify-content: space-between; gap: 10px; font-size: 0.9375rem; color: var(--ink); }
.iv-dim-h b { font-weight: 600; color: var(--ink-strong); font-feature-settings: "tnum" 1; }
.iv-dim-h em { font-style: normal; font-size: 0.8125rem; color: var(--mut); }
.iv-stack { display: grid; gap: 0; }
.iv-stack div { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr); gap: 10px; padding: 10px 0; font-size: 0.875rem; color: var(--ink); }
.iv-stack div + div { box-shadow: inset 0 1px 0 var(--line-soft); }
.iv-stack div.is-head { padding-top: 0; font-size: 0.75rem; font-weight: 600; color: var(--mut-2); }
.iv-stack span:first-child { font-weight: 500; color: var(--ink-strong); }
.iv-say { font-size: 1.0625rem; line-height: 1.75; color: var(--ink-strong); }
.iv-list { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.iv-list li { position: relative; padding-left: 20px; font-size: 0.9375rem; line-height: 1.65; color: var(--ink); }
.iv-list li::before { content: ""; position: absolute; left: 3px; top: 0.7em; width: 6px; height: 6px; border-radius: 50%; background: var(--ink-strong); }
.iv-list.is-up li::before { background: var(--leaf); }
.iv-list.is-grow li::before { background: var(--signal); }
.iv-bg { display: grid; gap: 0; margin: 0; }
.iv-bg div { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 12px; padding: 9px 0; font-size: 0.875rem; }
.iv-bg div + div { box-shadow: inset 0 1px 0 var(--line-soft); }
.iv-bg dt { color: var(--mut); }
.iv-bg dd { margin: 0; font-weight: 500; color: var(--ink-strong); }
.iv-next { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px 24px; padding: clamp(20px, 2.6vw, 30px); border-radius: 24px; background: var(--raised); box-shadow: var(--ring), var(--elev-1); }
.iv-next p { max-width: 36rem; font-size: 0.9375rem; line-height: 1.6; color: var(--ink); }
.iv-next .btn-row { margin: 0; }
.iv-note { font-size: 0.8125rem; line-height: 1.6; color: var(--mut-2); }

/* ---------- 窄屏 ---------- */
@media (max-width: 960px) {
  .iv-book { grid-template-columns: minmax(0, 1fr); }
  .iv-side { position: static; order: -1; }
  .iv-hero-card, .iv-grid { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 640px) {
  .iv-tasks { grid-template-columns: minmax(0, 1fr); }
  .iv-frame { padding: 10px; border-radius: 24px; }
  /* 手机上的顶栏只留头像、当前部分与计时：别的部分缩成小圆点（做完的是绿点），面试官的名字收起 */
  .iv-bar { gap: 10px; }
  .iv-who-t { display: none; }
  .iv-steps { align-items: center; }
  .iv-steps i { width: 8px; height: 8px; padding: 0; }
  .iv-steps i span { display: none; }
  .iv-steps i.is-done { background: var(--leaf); }
  .iv-steps i.is-done::before { content: none; }
  .iv-steps i.is-now { width: auto; height: auto; padding: 6px 12px; }
  .iv-steps i.is-now span { display: inline; }
  .iv-mrow { grid-template-columns: minmax(0, 1fr); }
  .iv-seg { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .iv-bar-r { grid-template-columns: minmax(80px, 1fr) minmax(0, 1.4fr) 40px; }
}