/* ==========================================================================
   FaceVault 设计系统
   全部使用 CSS 逻辑属性（margin-inline / padding-inline / inset-inline / start|end），
   阿拉伯语只需在 <html dir="rtl"> 上切换，无需第二套样式表。
   ========================================================================== */

:root {
  /* 墨 —— 主色，国际传媒集团的沉稳基调 */
  --ink-950: #0a0c10;
  --ink-900: #11141b;
  --ink-800: #1a1e28;
  --ink-700: #262c39;
  --ink-600: #3a4252;
  --ink-500: #5b6579;

  /* 纸 */
  --paper-000: #ffffff;
  --paper-050: #faf9f7;
  --paper-100: #f3f1ed;
  --paper-200: #e7e3dc;
  --paper-300: #d5cfc4;

  /* 金 —— 唯一强调色 */
  --gold-600: #a67c2e;
  --gold-500: #c69749;
  --gold-400: #d9b26c;
  --gold-100: #f4e9d4;

  /* 语义色 */
  --ok: #2f7d5d;
  --warn: #b8752a;
  --danger: #a63232;
  --info: #34618f;

  --text: var(--ink-900);
  --text-soft: var(--ink-500);
  --bg: var(--paper-050);
  --surface: var(--paper-000);
  --line: var(--paper-200);
  --line-strong: var(--paper-300);

  --radius: 3px;
  --radius-lg: 6px;
  --shadow-sm: 0 1px 2px rgba(10, 12, 16, .06);
  --shadow: 0 6px 24px -8px rgba(10, 12, 16, .18);

  --max: 1280px;
  --gutter: clamp(1.25rem, 4vw, 4rem);

  --font-sans: "Inter", "Helvetica Neue", "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-serif: "Iowan Old Style", "Palatino Linotype", "Source Han Serif SC",
                "Songti SC", Georgia, "Times New Roman", serif;
  --font-mono: "SFMono-Regular", "JetBrains Mono", Consolas, "Liberation Mono", monospace;
}

:lang(ar) {
  --font-sans: "Noto Sans Arabic", "Segoe UI", Tahoma, system-ui, sans-serif;
  --font-serif: "Noto Naskh Arabic", "Amiri", Georgia, serif;
}
:lang(ru) {
  --font-serif: "Iowan Old Style", Georgia, "Times New Roman", serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-family: var(--font-serif); font-weight: 600; line-height: 1.18;
  letter-spacing: -.01em; margin: 0 0 .6em; }
h1 { font-size: clamp(2.15rem, 5vw, 3.9rem); }
h2 { font-size: clamp(1.65rem, 3.2vw, 2.6rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.5rem); }
h4 { font-size: 1.05rem; font-family: var(--font-sans); font-weight: 650; }
p  { margin: 0 0 1.1em; }
a  { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 2px solid var(--gold-500); outline-offset: 2px;
}
img { max-width: 100%; height: auto; display: block; }
hr { border: 0; border-block-start: 1px solid var(--line); margin: 2.5rem 0; }

/* -------------------------------------------------------------- 布局 */
.wrap { max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(3.5rem, 8vw, 7rem); }
.section--tight { padding-block: clamp(2.25rem, 5vw, 3.5rem); }
.section--ink { background: var(--ink-950); color: var(--paper-100); }
.section--ink h1, .section--ink h2, .section--ink h3 { color: var(--paper-000); }
.section--paper { background: var(--paper-100); }
.section--surface { background: var(--surface); }

.grid { display: grid; gap: clamp(1.25rem, 3vw, 2.5rem); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr)); }
.stack > * + * { margin-block-start: var(--gap, 1rem); }
.cluster { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; }
.between { display: flex; flex-wrap: wrap; gap: 1rem;
  align-items: center; justify-content: space-between; }
.measure { max-width: 62ch; }
.center { text-align: center; margin-inline: auto; }

/* -------------------------------------------------------------- 页头 */
.masthead {
  position: sticky; inset-block-start: 0; z-index: 50;
  background: rgba(10, 12, 16, .94);
  backdrop-filter: saturate(180%) blur(10px);
  color: var(--paper-100);
  border-block-end: 1px solid rgba(255, 255, 255, .08);
}
.masthead__inner { display: flex; align-items: center; gap: 1.5rem;
  min-height: 68px; }
.logo { display: inline-flex; align-items: center; gap: .6rem;
  font-family: var(--font-serif); font-size: 1.2rem; font-weight: 600;
  letter-spacing: .01em; color: #fff; white-space: nowrap; }
.logo__mark {
  inline-size: 30px; block-size: 30px; border-radius: 2px; flex: none;
  background: linear-gradient(140deg, var(--gold-400), var(--gold-600));
  display: grid; place-items: center;
  font-family: var(--font-sans); font-size: .82rem; font-weight: 700;
  color: var(--ink-950);
}
.mainnav { display: flex; gap: 1.6rem; margin-inline-start: auto;
  font-size: .93rem; }
.mainnav a { color: rgba(255, 255, 255, .74); padding-block: .35rem;
  border-block-end: 1px solid transparent; transition: color .15s, border-color .15s; }
.mainnav a:hover { color: #fff; }
.mainnav a[aria-current="page"] { color: #fff; border-block-end-color: var(--gold-500); }
.masthead__actions { display: flex; align-items: center; gap: .6rem; }

.langmenu { position: relative; }
.langmenu summary {
  list-style: none; cursor: pointer; font-size: .88rem;
  color: rgba(255, 255, 255, .74); padding: .35rem .6rem; border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, .16);
}
.langmenu summary::-webkit-details-marker { display: none; }
.langmenu[open] summary { color: #fff; }
.langmenu__list {
  position: absolute; inset-block-start: calc(100% + .4rem); inset-inline-end: 0;
  background: var(--surface); color: var(--text); min-inline-size: 10rem;
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  box-shadow: var(--shadow); padding: .35rem; z-index: 60;
}
.langmenu__list a { display: block; padding: .45rem .7rem; border-radius: var(--radius);
  font-size: .9rem; }
.langmenu__list a:hover { background: var(--paper-100); }
.langmenu__list a[aria-current="true"] { color: var(--gold-600); font-weight: 600; }

.navtoggle { display: none; }

/* -------------------------------------------------------------- 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .7rem 1.35rem; border-radius: var(--radius); border: 1px solid transparent;
  font: inherit; font-size: .94rem; font-weight: 550; cursor: pointer;
  transition: background .15s, color .15s, border-color .15s, transform .05s;
  text-align: center;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--gold-500); color: var(--ink-950); }
.btn--primary:hover { background: var(--gold-400); }
.btn--dark { background: var(--ink-900); color: #fff; }
.btn--dark:hover { background: var(--ink-700); }
.btn--ghost { border-color: currentColor; color: inherit; background: transparent; }
.btn--ghost:hover { background: rgba(127, 127, 127, .1); }
.btn--line { border-color: var(--line-strong); background: var(--surface); }
.btn--line:hover { border-color: var(--ink-600); }
.btn--danger { background: var(--danger); color: #fff; }
.btn--sm { padding: .42rem .8rem; font-size: .84rem; }
.btn--block { inline-size: 100%; }
.btn[disabled] { opacity: .45; pointer-events: none; }

/* -------------------------------------------------------------- 首屏 */
.hero { background: var(--ink-950); color: var(--paper-100);
  position: relative; overflow: hidden; }
.hero::after {
  content: ""; position: absolute; inset-block-start: -30%;
  inset-inline-end: -12%; inline-size: 46rem; block-size: 46rem;
  background: radial-gradient(circle at 50% 50%,
    rgba(198, 151, 73, .17), transparent 62%);
  pointer-events: none;
}
.hero__inner { position: relative; z-index: 1;
  padding-block: clamp(4rem, 11vw, 9rem); max-width: 56rem; }
.eyebrow {
  font-size: .78rem; letter-spacing: .17em; text-transform: uppercase;
  color: var(--gold-400); font-weight: 600; margin-block-end: 1.4rem;
}
:lang(ar) .eyebrow, :lang(ru) .eyebrow { letter-spacing: .06em; }
.hero__lead { font-size: clamp(1.05rem, 1.7vw, 1.28rem);
  color: rgba(255, 255, 255, .78); max-width: 46rem; }
.hero__note { font-size: .88rem; color: rgba(255, 255, 255, .5);
  margin-block-start: 1.6rem; padding-inline-start: .9rem;
  border-inline-start: 2px solid var(--gold-600); }

/* -------------------------------------------------------------- 数据条 */
.statbar { border-block: 1px solid rgba(255, 255, 255, .1);
  background: var(--ink-900); }
.statbar__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr)); }
.stat { padding: 1.8rem 0; border-inline-end: 1px solid rgba(255, 255, 255, .08); }
.stat:last-child { border-inline-end: 0; }
.statbar__grid > .stat { padding-inline-end: 1.5rem; }
.stat__value { font-family: var(--font-serif); font-size: clamp(1.9rem, 3.4vw, 2.7rem);
  color: var(--gold-400); line-height: 1; }
.stat__label { font-size: .8rem; color: rgba(255, 255, 255, .55);
  margin-block-start: .5rem; }

/* -------------------------------------------------------------- 卡片 */
.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: clamp(1.25rem, 2.4vw, 1.9rem);
}
.card--flat { border: 0; background: transparent; padding: 0; }
.card--ink { background: var(--ink-800); border-color: var(--ink-700);
  color: var(--paper-200); }
.card__num { font-family: var(--font-mono); font-size: .78rem; color: var(--gold-600);
  letter-spacing: .08em; margin-block-end: .7rem; }
.card h3 { margin-block-end: .5rem; }
.card p:last-child { margin-block-end: 0; }

.steps { counter-reset: step; }
.step { position: relative; padding-inline-start: 3.2rem;
  padding-block: 1.15rem; border-block-start: 1px solid var(--line); }
.step:last-child { border-block-end: 1px solid var(--line); }
.step::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  position: absolute; inset-inline-start: 0; inset-block-start: 1.15rem;
  font-family: var(--font-mono); font-size: .8rem; color: var(--gold-600);
}
.step h4 { margin-block-end: .25rem; }
.step p { margin: 0; color: var(--text-soft); font-size: .95rem; }

.checklist { list-style: none; padding: 0; margin: 0; }
.checklist li { position: relative; padding-inline-start: 1.6rem;
  margin-block-end: .65rem; }
.checklist li::before {
  content: ""; position: absolute; inset-inline-start: 0; inset-block-start: .62em;
  inline-size: .5rem; block-size: .5rem; border-radius: 50%;
  background: var(--gold-500);
}
.checklist--x li::before { background: var(--danger); }
.checklist--ok li::before { background: var(--ok); }

/* -------------------------------------------------------------- 提示块 */
.notice {
  border-inline-start: 3px solid var(--gold-500);
  background: var(--gold-100); color: #4a3410;
  padding: 1.1rem 1.3rem; border-radius: var(--radius);
}
.notice--danger { border-inline-start-color: var(--danger);
  background: #fbeceb; color: #6d2020; }
.notice--info { border-inline-start-color: var(--info);
  background: #eaf1f8; color: #23405e; }
.notice--ok { border-inline-start-color: var(--ok);
  background: #eaf5ef; color: #1f5340; }
.notice h4 { margin-block-end: .4rem; }
.notice p:last-child { margin-block-end: 0; }
.notice--ink { background: rgba(255, 255, 255, .05); color: rgba(255, 255, 255, .8); }

/* -------------------------------------------------------------- 表格 */
.tablewrap { overflow-x: auto; border: 1px solid var(--line);
  border-radius: var(--radius-lg); background: var(--surface); }
table { inline-size: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { padding: .72rem .9rem; text-align: start; vertical-align: top;
  border-block-end: 1px solid var(--line); }
thead th { background: var(--paper-100); font-weight: 600; font-size: .82rem;
  letter-spacing: .03em; text-transform: uppercase; color: var(--ink-600);
  white-space: nowrap; }
tbody tr:last-child td { border-block-end: 0; }
tbody tr:hover { background: var(--paper-050); }
td.num, th.num { text-align: end; font-family: var(--font-mono); font-size: .87rem; }
.mono { font-family: var(--font-mono); font-size: .85rem; }
.truncate { max-inline-size: 22rem; overflow: hidden; text-overflow: ellipsis;
  white-space: nowrap; }

/* -------------------------------------------------------------- 徽标 */
.tag {
  display: inline-block; padding: .16rem .55rem; border-radius: 999px;
  font-size: .76rem; font-weight: 600; letter-spacing: .02em;
  background: var(--paper-200); color: var(--ink-700); white-space: nowrap;
}
.tag--ok { background: #dff0e7; color: #1f5340; }
.tag--warn { background: #fbeedd; color: #7a4c14; }
.tag--danger { background: #fadedd; color: #7d2222; }
.tag--info { background: #dfeaf6; color: #234a70; }
.tag--muted { background: var(--paper-200); color: var(--text-soft); }
.tag--gold { background: var(--gold-100); color: var(--gold-600); }

/* -------------------------------------------------------------- 表单 */
.field { display: block; margin-block-end: 1.05rem; }
.field > span { display: block; font-size: .84rem; font-weight: 600;
  margin-block-end: .35rem; color: var(--ink-700); }
.field small { display: block; font-weight: 400; color: var(--text-soft);
  margin-block-start: .25rem; font-size: .82rem; }
input[type="text"], input[type="email"], input[type="password"], input[type="tel"],
input[type="number"], input[type="search"], input[type="file"], select, textarea {
  inline-size: 100%; padding: .62rem .8rem; font: inherit; font-size: .95rem;
  color: var(--text); background: var(--surface);
  border: 1px solid var(--line-strong); border-radius: var(--radius);
}
textarea { min-block-size: 7rem; resize: vertical; }
input:disabled, select:disabled, textarea:disabled {
  background: var(--paper-100); color: var(--text-soft); }
.checkrow { display: flex; gap: .65rem; align-items: flex-start;
  padding: .8rem 0; border-block-end: 1px solid var(--line); }
.checkrow input { margin-block-start: .28rem; flex: none;
  inline-size: 1.05rem; block-size: 1.05rem; accent-color: var(--gold-600); }
.checkrow span { font-size: .93rem; }
.formgrid { display: grid; gap: 0 1.1rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr)); }

/* -------------------------------------------------------------- 控制台 */
.console { display: grid; grid-template-columns: 244px 1fr; min-block-size: 100vh; }
.console__side {
  background: var(--ink-950); color: rgba(255, 255, 255, .72);
  padding: 1.6rem 0; border-inline-end: 1px solid var(--ink-800);
}
.console__brand { padding-inline: 1.4rem; margin-block-end: 1.6rem; }
.console__title { font-size: .74rem; letter-spacing: .16em; text-transform: uppercase;
  color: var(--gold-400); margin-block-start: .8rem; }
.sidenav { display: flex; flex-direction: column; }
.sidenav a {
  padding: .58rem 1.4rem; font-size: .92rem; color: rgba(255, 255, 255, .68);
  border-inline-start: 2px solid transparent;
}
.sidenav a:hover { color: #fff; background: rgba(255, 255, 255, .04); }
.sidenav a[aria-current="page"] {
  color: #fff; border-inline-start-color: var(--gold-500);
  background: rgba(198, 151, 73, .1);
}
.console__main { padding: clamp(1.5rem, 3vw, 2.6rem); background: var(--bg);
  min-inline-size: 0; }
.console__head { margin-block-end: 1.8rem; }
.console__head h1 { font-size: clamp(1.5rem, 2.6vw, 2rem); margin-block-end: .25rem; }
.console__head p { color: var(--text-soft); margin: 0; }

.kpis { display: grid; gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 12rem), 1fr));
  margin-block-end: 1.8rem; }
.kpi { background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 1.1rem 1.25rem; }
.kpi__label { font-size: .8rem; color: var(--text-soft); }
.kpi__value { font-family: var(--font-serif); font-size: 1.85rem; line-height: 1.15;
  margin-block-start: .3rem; }
.kpi--alert { border-color: var(--warn); background: #fdf7ee; }
.kpi--danger { border-color: var(--danger); background: #fdf0ef; }

.meter { block-size: 6px; background: var(--paper-200); border-radius: 999px;
  overflow: hidden; margin-block-start: .6rem; }
.meter > i { display: block; block-size: 100%; background: var(--gold-500); }
.meter--warn > i { background: var(--warn); }
.meter--danger > i { background: var(--danger); }

/* -------------------------------------------------------------- 页脚 */
.footer { background: var(--ink-950); color: rgba(255, 255, 255, .6);
  padding-block: clamp(2.5rem, 5vw, 4rem); font-size: .9rem; }
.footer h4 { color: rgba(255, 255, 255, .92); font-size: .78rem;
  letter-spacing: .14em; text-transform: uppercase; margin-block-end: .9rem; }
.footer a { color: rgba(255, 255, 255, .6); }
.footer a:hover { color: var(--gold-400); }
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer li { margin-block-end: .45rem; }
.footer__bottom { margin-block-start: 2.5rem; padding-block-start: 1.5rem;
  border-block-start: 1px solid rgba(255, 255, 255, .1);
  display: flex; flex-wrap: wrap; gap: .8rem 1.5rem;
  justify-content: space-between; font-size: .84rem;
  color: rgba(255, 255, 255, .42); }

/* -------------------------------------------------------------- 杂项 */
.skip { position: absolute; inset-inline-start: -9999px; }
.skip:focus { inset-inline-start: 1rem; inset-block-start: 1rem; z-index: 100;
  background: #fff; color: #000; padding: .6rem 1rem; border-radius: var(--radius); }
.muted { color: var(--text-soft); }
.small { font-size: .87rem; }
.tiny { font-size: .78rem; }
.nowrap { white-space: nowrap; }
.mt-0 { margin-block-start: 0; }
.mb-0 { margin-block-end: 0; }
.divider { border-block-start: 1px solid var(--line); margin-block: 2rem; }
.faceph {
  aspect-ratio: 3 / 4; border-radius: var(--radius);
  background: linear-gradient(155deg, var(--ink-700), var(--ink-900));
  display: grid; place-items: center; color: rgba(255, 255, 255, .3);
  font-family: var(--font-mono); font-size: .72rem; text-align: center;
  padding: .5rem;
}
.mockflag {
  display: inline-flex; align-items: center; gap: .4rem;
  font-size: .78rem; color: var(--warn); font-weight: 600;
}
.mockflag::before { content: "▲"; font-size: .62rem; }

/* -------------------------------------------------------------- 响应式 */
@media (max-width: 900px) {
  .console { grid-template-columns: 1fr; }
  .console__side { border-inline-end: 0;
    border-block-end: 1px solid var(--ink-800); padding-block: 1rem; }
  .sidenav { flex-direction: row; overflow-x: auto; gap: .25rem;
    padding-inline: 1rem; }
  .sidenav a { white-space: nowrap; border-inline-start: 0;
    border-block-end: 2px solid transparent; padding: .5rem .7rem; }
  .sidenav a[aria-current="page"] { border-inline-start: 0;
    border-block-end-color: var(--gold-500); }
  .console__brand { padding-inline: 1rem; margin-block-end: .8rem; }
}

@media (max-width: 780px) {
  .navtoggle { display: inline-flex; margin-inline-start: auto; }
  .mainnav {
    display: none; position: absolute; inset-block-start: 68px;
    inset-inline: 0; flex-direction: column; gap: 0;
    background: var(--ink-950); padding: .5rem var(--gutter) 1.25rem;
    border-block-end: 1px solid rgba(255, 255, 255, .1);
  }
  .masthead[data-open="true"] .mainnav { display: flex; }
  .mainnav a { padding-block: .75rem;
    border-block-end: 1px solid rgba(255, 255, 255, .07); }
  .stat { border-inline-end: 0;
    border-block-end: 1px solid rgba(255, 255, 255, .08); }
}

@media print {
  .masthead, .footer, .console__side, .btn { display: none !important; }
  body { background: #fff; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}
