/* ============================================================
   超兴创投 · 官网排版设计系统
   编辑排版式极简风：衬线大标题 + 发丝线分割 + 品牌红点缀
   ============================================================ */

:root {
  --paper: #faf9f6;
  --card: #ffffff;
  --ink: #191a1e;
  --ink-soft: #45484f;
  --muted: #8a8d95;
  --line: #e5e2da;
  --line-dark: rgba(255, 255, 255, 0.16);
  --accent: #c8132d;
  --accent-dark: #9e0e23;
  --dark: #141519;
  --dark-deep: #0e0f12;
  --serif: "Songti SC", "STSong", "STZhongsong", "Noto Serif SC", "SimSun", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --container: 1120px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, ul, ol, li, figure { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

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

::selection { background: var(--accent); color: #fff; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- 顶部信息条 ---------- */
.topbar {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.55);
  font-size: 12px;
  letter-spacing: 0.08em;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 38px;
}
.topbar .en { letter-spacing: 0.3em; font-size: 10px; text-transform: uppercase; }

/* ---------- 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 249, 246, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.3s var(--ease);
}
.site-header.is-scrolled { box-shadow: 0 8px 30px rgba(25, 26, 30, 0.07); }
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

/* 品牌：印章符号 + 字标 */
.brand { display: flex; align-items: center; gap: 14px; }
.brand .seal {
  width: 38px;
  height: 38px;
  flex: none;
  display: grid;
  place-items: center;
  background: var(--accent);
  color: #fff;
  font-family: var(--serif);
  font-size: 21px;
  line-height: 1;
  border-radius: 3px;
  box-shadow: 0 2px 8px rgba(200, 19, 45, 0.3);
}
.brand .wordmark { display: flex; flex-direction: column; line-height: 1.2; }
.brand .cn { font-family: var(--serif); font-size: 21px; letter-spacing: 0.22em; color: var(--ink); }
.brand .en { font-size: 9px; letter-spacing: 0.32em; color: var(--muted); text-transform: uppercase; margin-top: 3px; }

/* 导航 */
.nav { display: flex; align-items: center; gap: 6px; }
.nav a {
  position: relative;
  display: block;
  padding: 10px 18px;
  font-size: 15px;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  transition: color 0.25s var(--ease);
}
.nav a::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 4px;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}
.nav a:hover { color: var(--accent); }
.nav a:hover::after { transform: scaleX(1); }
.nav a.active { color: var(--ink); font-weight: 600; }
.nav a.active::after { transform: scaleX(1); }

/* 移动端汉堡按钮 */
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 0;
  background: transparent;
  cursor: pointer;
  position: relative;
}
.nav-toggle span {
  position: absolute;
  left: 9px;
  right: 9px;
  height: 2px;
  background: var(--ink);
  transition: transform 0.3s var(--ease), opacity 0.2s;
}
.nav-toggle span:nth-child(1) { top: 13px; }
.nav-toggle span:nth-child(2) { top: 19px; }
.nav-toggle span:nth-child(3) { top: 25px; }
.nav-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative;
  min-height: 560px;
  height: 82vh;
  max-height: 760px;
  display: flex;
  align-items: flex-end;
  background: url("./banner.png") center 30% / cover no-repeat;
  color: #fff;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 12, 18, 0.42) 0%, rgba(10, 12, 18, 0.18) 40%, rgba(10, 12, 18, 0.78) 100%);
}
.hero .container { position: relative; width: 100%; padding-bottom: 96px; }
.hero .kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  letter-spacing: 0.22em;
  color: rgba(255, 255, 255, 0.78);
}
.hero .kicker::before { content: ""; width: 26px; height: 2px; background: var(--accent); flex: none; }
.hero h1 {
  margin-top: 22px;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(46px, 8vw, 88px);
  letter-spacing: 0.14em;
  line-height: 1.1;
  text-shadow: 0 4px 30px rgba(0, 0, 0, 0.35);
}
.hero .en-name {
  margin-top: 14px;
  font-size: 12px;
  letter-spacing: 0.55em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.62);
}
.hero .tags {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.hero .tags li {
  font-size: 13px;
  letter-spacing: 0.18em;
  padding: 8px 18px;
  border: 1px solid rgba(255, 255, 255, 0.38);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(4px);
  transition: border-color 0.25s, background 0.25s;
}
.hero .tags li:hover { border-color: var(--accent); background: rgba(200, 19, 45, 0.22); }
.hero .scroll-hint {
  position: absolute;
  right: 40px;
  bottom: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-size: 10px;
  letter-spacing: 0.35em;
  color: rgba(255, 255, 255, 0.55);
  writing-mode: vertical-rl;
}
.hero .scroll-hint::after {
  content: "";
  width: 1px;
  height: 46px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.7), transparent);
  animation: drip 2.2s var(--ease) infinite;
}
@keyframes drip {
  0% { transform: scaleY(0); transform-origin: top; }
  55% { transform: scaleY(1); transform-origin: top; }
  56% { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- 通用区块 ---------- */
.section { padding: 96px 0; }
.section + .section { border-top: 1px solid var(--line); }

.section-head { display: flex; align-items: baseline; gap: 20px; margin-bottom: 48px; }
.section-head .no {
  font-family: var(--serif);
  font-size: 15px;
  color: var(--accent);
  letter-spacing: 0.1em;
}
.section-head .no::after { content: ""; display: block; width: 26px; height: 1px; background: var(--accent); margin-top: 6px; }
.section-head h2 { font-family: var(--serif); font-size: clamp(26px, 3.4vw, 36px); letter-spacing: 0.14em; color: var(--ink); }
.section-head .en { font-size: 11px; letter-spacing: 0.32em; text-transform: uppercase; color: var(--muted); }

/* 正文排版 */
.prose { max-width: 780px; }
.prose p {
  font-size: 17px;
  line-height: 2.1;
  color: var(--ink-soft);
  text-align: justify;
  margin-bottom: 1.4em;
}
.prose p:last-child { margin-bottom: 0; }

/* 合规提示块 */
.notice {
  margin-top: 48px;
  max-width: 780px;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  padding: 26px 32px;
}
.notice .label {
  font-size: 12px;
  letter-spacing: 0.28em;
  color: var(--accent);
  margin-bottom: 10px;
}
.notice p { font-size: 13.5px; line-height: 2; color: var(--muted); text-align: justify; }

/* ---------- 投资方向 ---------- */
.focus-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0 36px;
}
.focus-item {
  border-top: 1px solid var(--line);
  padding-top: 24px;
  transition: transform 0.35s var(--ease);
}
.focus-item:hover { transform: translateY(-4px); }
.focus-item .idx { font-family: var(--serif); font-size: 14px; color: var(--accent); letter-spacing: 0.08em; }
.focus-item h3 { font-family: var(--serif); font-size: 22px; letter-spacing: 0.12em; margin: 12px 0 8px; color: var(--ink); }
.focus-item p { font-size: 13px; line-height: 1.9; color: var(--muted); }
.focus-item::after { content: ""; display: block; height: 2px; width: 0; background: var(--accent); transition: width 0.4s var(--ease); margin-top: 18px; }
.focus-item:hover::after { width: 100%; }

/* ---------- CTA 通栏 ---------- */
.cta-band { display: block; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); transition: background 0.3s var(--ease); }
.cta-band:hover { background: var(--card); }
.cta-band .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 52px;
  padding-bottom: 52px;
}
.cta-band .text { font-family: var(--serif); font-size: clamp(22px, 3vw, 30px); letter-spacing: 0.12em; color: var(--ink); }
.cta-band .text small { display: block; font-family: var(--sans); font-size: 11px; letter-spacing: 0.3em; text-transform: uppercase; color: var(--muted); margin-top: 8px; }
.cta-band .arrow {
  flex: none;
  width: 54px;
  height: 54px;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: grid;
  place-items: center;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
}
.cta-band .arrow svg { transition: transform 0.3s var(--ease); stroke: var(--ink); }
.cta-band:hover .arrow { background: var(--accent); border-color: var(--accent); }
.cta-band:hover .arrow svg { transform: translateX(4px); stroke: #fff; }

/* ---------- 子页页头 ---------- */
.page-hero { padding: 88px 0 64px; border-bottom: 1px solid var(--line); }
.page-hero .crumb { font-size: 12px; letter-spacing: 0.2em; color: var(--muted); margin-bottom: 20px; }
.page-hero .crumb a:hover { color: var(--accent); }
.page-hero h1 { font-family: var(--serif); font-size: clamp(34px, 5vw, 54px); letter-spacing: 0.16em; color: var(--ink); }
.page-hero .en { margin-top: 12px; font-size: 12px; letter-spacing: 0.45em; text-transform: uppercase; color: var(--muted); }

/* ---------- 关于我们 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 72px;
  align-items: start;
}
.about-photo { position: relative; }
.about-photo img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: 2px;
}
.about-photo::before {
  content: "";
  position: absolute;
  inset: 18px -18px -18px 18px;
  border: 1px solid var(--accent);
  border-radius: 2px;
  z-index: -1;
  opacity: 0.5;
}
.facts {
  margin-top: 64px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px;
}
.facts li { border-top: 1px solid var(--line); padding-top: 20px; }
.facts .k { font-size: 12px; letter-spacing: 0.24em; color: var(--muted); }
.facts .v { font-family: var(--serif); font-size: 20px; letter-spacing: 0.06em; color: var(--ink); margin-top: 10px; }

/* ---------- 投资项目 ---------- */
.portfolio { border-top: 1px solid var(--line); }
.portfolio-item {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 40px;
  padding: 44px 12px;
  border-bottom: 1px solid var(--line);
  transition: background 0.3s var(--ease);
}
.portfolio-item:hover { background: var(--card); }
.portfolio-item .code .num { font-family: var(--serif); font-size: 27px; letter-spacing: 0.04em; color: var(--accent); }
.portfolio-item .code .k { font-size: 11px; letter-spacing: 0.26em; color: var(--muted); margin-top: 6px; }
.portfolio-item h3 { font-family: var(--serif); font-size: 23px; letter-spacing: 0.1em; color: var(--ink); transition: color 0.25s; }
.portfolio-item:hover h3 { color: var(--accent); }
.portfolio-item .tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 14px;
  margin-left: 14px;
  vertical-align: 4px;
}
.portfolio-item .desc { margin-top: 14px; font-size: 15px; line-height: 2; color: var(--ink-soft); text-align: justify; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--dark); color: rgba(255, 255, 255, 0.72); }
.site-footer .container {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  padding-top: 64px;
  padding-bottom: 64px;
}
.site-footer .brand .cn { color: #fff; }
.site-footer .brand .en { color: rgba(255, 255, 255, 0.4); }
.site-footer .slogan { margin-top: 18px; font-size: 13px; line-height: 2; color: rgba(255, 255, 255, 0.45); max-width: 320px; }
.contact-list li {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 18px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-dark);
  font-size: 14px;
}
.contact-list li:first-child { border-top: 1px solid var(--line-dark); }
.contact-list .k { color: rgba(255, 255, 255, 0.4); letter-spacing: 0.2em; font-size: 12px; padding-top: 2px; }
.contact-list a:hover { color: #fff; }
.copyright {
  background: var(--dark-deep);
  color: rgba(255, 255, 255, 0.38);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  text-align: center;
  padding: 18px 24px;
  line-height: 2;
}
.copyright a { color: rgba(255, 255, 255, 0.5); }
.copyright a:hover { color: var(--accent); }

/* ---------- 滚动显现动效 ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .container { padding: 0 24px; }
  .section { padding: 72px 0; }
  .focus-grid { grid-template-columns: repeat(3, 1fr); gap: 40px 28px; }
  .about-grid { grid-template-columns: 1fr; gap: 56px; }
  .about-photo { max-width: 420px; }
  .portfolio-item { grid-template-columns: 1fr; gap: 14px; padding: 36px 8px; }
  .site-footer .container { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 768px) {
  /* 移动端导航 */
  .nav-toggle { display: block; }
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 20px 40px rgba(25, 26, 30, 0.1);
    padding: 8px 0;
    display: none;
  }
  .nav.open { display: flex; }
  .nav a { padding: 15px 32px; font-size: 16px; border-top: 1px solid var(--line); }
  .nav a:first-child { border-top: 0; }
  .nav a::after { display: none; }
  .nav a.active { color: var(--accent); }

  .topbar .en { display: none; }
  .hero { min-height: 480px; height: 68vh; }
  .hero .container { padding-bottom: 64px; }
  .hero .scroll-hint { display: none; }
  .section-head { flex-wrap: wrap; gap: 8px 16px; margin-bottom: 36px; }
  .prose p { font-size: 16px; }
  .facts { grid-template-columns: 1fr; gap: 24px; margin-top: 48px; }
  .cta-band .container { padding-top: 40px; padding-bottom: 40px; }
  .page-hero { padding: 56px 0 44px; }
}

@media (max-width: 560px) {
  .container { padding: 0 20px; }
  .section { padding: 56px 0; }
  .focus-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 20px; }
  .focus-item h3 { font-size: 19px; }
  .brand .en { display: none; }
  .hero .tags li { font-size: 12px; padding: 6px 14px; }
  .portfolio-item .tag { margin-left: 0; margin-top: 10px; }
  .notice { padding: 20px 22px; }
}