/* ==========================================================================
   广州狐影科技有限责任公司 — 官网样式
   ========================================================================== */

/* --- 设计令牌 ----------------------------------------------------------- */
:root {
  --ink: #10131a;
  --ink-soft: #1a1f2b;
  --ink-line: #262d3d;
  --paper: #ffffff;
  --paper-soft: #f6f7f9;
  --paper-line: #e6e9ef;

  --text: #1b2030;
  --text-muted: #5b6478;
  --text-invert: #f2f4f8;
  --text-invert-muted: #9aa4ba;

  --brand: #e8622c;
  --brand-deep: #c94b1a;
  --brand-soft: #fff1ea;

  --radius: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 2px rgba(16, 19, 26, 0.06), 0 4px 12px rgba(16, 19, 26, 0.05);
  --shadow-md: 0 8px 30px rgba(16, 19, 26, 0.09);

  --wrap: 1160px;
  --gutter: clamp(20px, 5vw, 40px);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue",
    Arial, sans-serif;
}

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

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: -0.01em;
}

p {
  margin: 0;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
  border-radius: 4px;
}

/* --- 布局 --------------------------------------------------------------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: clamp(64px, 9vw, 112px);
}

.section--soft {
  background: var(--paper-soft);
}

.section__head {
  max-width: 720px;
  margin-bottom: clamp(36px, 5vw, 56px);
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand);
  margin-bottom: 14px;
}

.section__title {
  font-size: clamp(26px, 3.6vw, 38px);
  margin-bottom: 16px;
}

.section__lead {
  font-size: clamp(15px, 1.4vw, 17px);
  color: var(--text-muted);
}

.grid {
  display: grid;
  gap: clamp(18px, 2.4vw, 28px);
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

/* --- 头部导航 ----------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.site-header.is-stuck {
  border-bottom-color: var(--paper-line);
  box-shadow: 0 1px 12px rgba(16, 19, 26, 0.05);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.brand__mark {
  width: 32px;
  height: 32px;
  flex: none;
}

.brand__en {
  display: block;
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  text-transform: uppercase;
  line-height: 1.2;
  margin-top: 1px;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.5vw, 34px);
}

.nav__link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.18s;
}

.nav__link:hover,
.nav__link.is-active {
  color: var(--text);
}

.nav__link.is-active {
  font-weight: 600;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--paper-line);
  border-radius: 10px;
  background: var(--paper);
  cursor: pointer;
  padding: 0;
  place-items: center;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 17px;
  height: 1.8px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.22s, opacity 0.22s;
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
}

.nav-toggle span::before {
  transform: translateY(-6px);
}

.nav-toggle span::after {
  transform: translateY(6px);
}

.nav-toggle[aria-expanded="true"] span {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] span::before {
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span::after {
  transform: rotate(-45deg);
}

/* --- 按钮 --------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.16s, background 0.18s, border-color 0.18s, color 0.18s;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--primary {
  background: var(--brand);
  color: #fff;
}

.btn--primary:hover {
  background: var(--brand-deep);
}

.btn--ghost {
  border-color: var(--paper-line);
  color: var(--text);
  background: var(--paper);
}

.btn--ghost:hover {
  border-color: var(--text-muted);
}

.btn--on-dark {
  border-color: rgba(255, 255, 255, 0.28);
  color: var(--text-invert);
  background: transparent;
}

.btn--on-dark:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
}

.btn--sm {
  padding: 9px 18px;
  font-size: 14px;
}

/* --- 首屏 --------------------------------------------------------------- */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--text-invert);
  padding-block: clamp(76px, 12vw, 140px);
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.hero::before {
  width: 620px;
  height: 620px;
  top: -280px;
  right: -160px;
  background: radial-gradient(circle, rgba(232, 98, 44, 0.34), transparent 68%);
}

.hero::after {
  width: 520px;
  height: 520px;
  bottom: -300px;
  left: -180px;
  background: radial-gradient(circle, rgba(64, 110, 220, 0.22), transparent 70%);
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 6px 14px 6px 10px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  font-size: 13px;
  color: var(--text-invert-muted);
  margin-bottom: 26px;
}

.hero__badge b {
  color: var(--text-invert);
  font-weight: 600;
}

.hero__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 4px rgba(232, 98, 44, 0.22);
  flex: none;
}

.hero__title {
  font-size: clamp(32px, 5.6vw, 60px);
  line-height: 1.18;
  letter-spacing: -0.025em;
  margin-bottom: 22px;
}

.hero__title em {
  font-style: normal;
  color: var(--brand);
}

.hero__lead {
  font-size: clamp(16px, 1.7vw, 19px);
  color: var(--text-invert-muted);
  max-width: 640px;
  margin-bottom: 34px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero__stats {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 20px 32px;
  margin-top: clamp(48px, 7vw, 76px);
  padding-top: 34px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.stat__num {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-invert);
}

.stat__num span {
  color: var(--brand);
}

.stat__label {
  font-size: 13.5px;
  color: var(--text-invert-muted);
  margin-top: 2px;
}

/* --- 卡片 --------------------------------------------------------------- */
.card {
  background: var(--paper);
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 2.6vw, 32px);
  transition: transform 0.22s, box-shadow 0.22s, border-color 0.22s;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.card__icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--brand-soft);
  color: var(--brand-deep);
  margin-bottom: 18px;
}

.card__icon svg {
  width: 23px;
  height: 23px;
}

.card__title {
  font-size: 18.5px;
  margin-bottom: 10px;
}

.card__text {
  font-size: 14.8px;
  color: var(--text-muted);
}

.card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 18px;
}

.tag {
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--paper-soft);
  border: 1px solid var(--paper-line);
  border-radius: 6px;
  padding: 3px 9px;
}

/* --- 流程步骤 ----------------------------------------------------------- */
.step {
  position: relative;
  padding-top: 26px;
  border-top: 2px solid var(--paper-line);
}

.step__num {
  position: absolute;
  top: -1px;
  left: 0;
  width: 34px;
  height: 2px;
  background: var(--brand);
}

.step__k {
  font-size: 13px;
  font-weight: 700;
  color: var(--brand);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.step__title {
  font-size: 17px;
  margin-bottom: 8px;
}

.step__text {
  font-size: 14.5px;
  color: var(--text-muted);
}

/* --- 关于页 ------------------------------------------------------------- */
.page-head {
  background: var(--ink);
  color: var(--text-invert);
  padding-block: clamp(60px, 8vw, 96px);
  position: relative;
  overflow: hidden;
}

.page-head::after {
  content: "";
  position: absolute;
  width: 480px;
  height: 480px;
  top: -240px;
  right: -120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 98, 44, 0.28), transparent 70%);
}

.page-head__inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.page-head__title {
  font-size: clamp(30px, 4.6vw, 46px);
  letter-spacing: -0.025em;
  margin-bottom: 16px;
}

.page-head__lead {
  font-size: clamp(15px, 1.5vw, 18px);
  color: var(--text-invert-muted);
}

.prose {
  max-width: 760px;
}

.prose p + p {
  margin-top: 18px;
}

.prose p {
  font-size: clamp(15px, 1.4vw, 16.5px);
  color: var(--text-muted);
}

.prose strong {
  color: var(--text);
  font-weight: 600;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}

.factsheet {
  background: var(--paper-soft);
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-lg);
  padding: clamp(22px, 2.4vw, 30px);
}

.factsheet__title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--paper-line);
}

.factsheet dl {
  margin: 0;
  display: grid;
  gap: 15px;
}

.factsheet dt {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 3px;
}

.factsheet dd {
  margin: 0;
  font-size: 15px;
  color: var(--text);
  word-break: break-word;
}

.factsheet a:hover {
  color: var(--brand-deep);
  text-decoration: underline;
}

/* --- 价值观清单 --------------------------------------------------------- */
.value {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.value__k {
  flex: none;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  background: var(--ink);
  color: var(--text-invert);
  font-size: 13px;
  font-weight: 700;
  margin-top: 3px;
}

.value__title {
  font-size: 17px;
  margin-bottom: 6px;
}

.value__text {
  font-size: 14.5px;
  color: var(--text-muted);
}

/* --- CTA ---------------------------------------------------------------- */
.cta {
  background: var(--ink);
  color: var(--text-invert);
  border-radius: var(--radius-lg);
  padding: clamp(34px, 5vw, 60px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.cta::after {
  content: "";
  position: absolute;
  width: 380px;
  height: 380px;
  right: -120px;
  bottom: -220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 98, 44, 0.3), transparent 70%);
}

.cta__inner {
  position: relative;
  z-index: 1;
}

.cta__title {
  font-size: clamp(23px, 2.8vw, 32px);
  margin-bottom: 12px;
}

.cta__text {
  font-size: 15.5px;
  color: var(--text-invert-muted);
}

.cta__actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* --- 页脚 --------------------------------------------------------------- */
.site-footer {
  background: var(--ink);
  color: var(--text-invert-muted);
  padding-top: clamp(48px, 6vw, 72px);
  padding-bottom: 30px;
  font-size: 14.5px;
}

.site-footer .brand {
  color: var(--text-invert);
}

.site-footer .brand__en {
  color: var(--text-invert-muted);
}

.footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(auto-fit, minmax(150px, 1fr));
  gap: clamp(28px, 4vw, 52px);
  padding-bottom: 34px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__about {
  max-width: 340px;
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.7;
}

.footer__col-title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-invert);
  margin-bottom: 14px;
}

.footer__list {
  display: grid;
  gap: 10px;
}

.footer__list a:hover {
  color: var(--text-invert);
}

.footer__bottom {
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  align-items: center;
  justify-content: space-between;
  font-size: 13.5px;
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  align-items: center;
}

.footer__legal a:hover {
  color: var(--text-invert);
  text-decoration: underline;
}

/* --- 404 --------------------------------------------------------------- */
.notfound {
  min-height: 68vh;
  display: grid;
  place-content: center;
  text-align: center;
  padding-block: 80px;
}

.notfound__code {
  font-size: clamp(64px, 12vw, 120px);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--brand);
  line-height: 1;
}

.notfound__title {
  font-size: clamp(22px, 3vw, 30px);
  margin: 18px 0 12px;
}

.notfound__text {
  color: var(--text-muted);
  margin-bottom: 28px;
}

/* --- 进场动画 ----------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

/* --- 响应式 ------------------------------------------------------------- */
@media (max-width: 860px) {
  .split {
    grid-template-columns: 1fr;
  }

  .cta {
    grid-template-columns: 1fr;
  }

  .footer__top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: grid;
  }

  .nav {
    position: fixed;
    inset: 68px 0 auto;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--paper-line);
    box-shadow: var(--shadow-md);
    padding: 8px var(--gutter) 20px;
    transform: translateY(-130%);
    transition: transform 0.28s ease;
  }

  .nav.is-open {
    transform: none;
  }

  .nav__link {
    padding: 13px 0;
    border-bottom: 1px solid var(--paper-line);
    font-size: 16px;
  }

  .nav .btn {
    margin-top: 16px;
  }
}

@media (max-width: 520px) {
  .footer__top {
    grid-template-columns: 1fr;
  }

  .brand {
    font-size: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}