/* ============================================================
   Investment Connections：浅色、理性的投行风格
   象牙白底 + 墨蓝文字 + 铜色点缀，无衬线标题，左右分栏首屏
   ============================================================ */

:root {
  --bg: #f6f2ea;
  --bg-2: #eee8dd;
  --surface: #fffdf8;
  --navy: #131c2a;
  --ink: #16202e;
  --ink-2: #4b5564;
  --ink-3: #808894;
  --accent: #a8743f;
  --accent-soft: rgba(168, 116, 63, 0.1);
  --line: rgba(22, 32, 46, 0.12);
  --line-strong: rgba(22, 32, 46, 0.22);
  --sans: "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --latin: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --gutter: clamp(20px, 5vw, 72px);
  --maxw: 1280px;
  --header-h: 72px;
}

:lang(zh-Hant) { --sans: "Inter", "PingFang TC", "Microsoft JhengHei", "Noto Sans TC", system-ui, sans-serif; }
:lang(ja) { --sans: "Inter", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", system-ui, sans-serif; }
:lang(ko) { --sans: "Inter", "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", system-ui, sans-serif; }
:lang(ar) { --sans: "Geeza Pro", "Noto Sans Arabic", "Segoe UI", Tahoma, sans-serif; }
:lang(th) { --sans: "Inter", "Thonburi", "Leelawadee UI", "Noto Sans Thai", system-ui, sans-serif; }

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  background: var(--bg);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
p { margin: 0; }
figure { margin: 0; }
button { font: inherit; }

h1, h2, h3 {
  margin: 0;
  font-family: var(--sans);
  font-weight: 600;
  letter-spacing: -0.02em;
  overflow-wrap: break-word;
}
h3 { hyphens: auto; }

:lang(zh-Hans) :is(h1, h2, .statement p),
:lang(zh-Hant) :is(h1, h2, .statement p),
:lang(ja) :is(h1, h2, .statement p),
:lang(ko) :is(h1, h2, h3, .statement p) {
  word-break: keep-all;
  overflow-wrap: anywhere;
  letter-spacing: 0;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

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

.eyebrow {
  display: inline-block;
  padding: 5px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-family: var(--latin);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  line-height: 1.4;
  text-transform: uppercase;
  color: var(--ink-2);
}

/* ---------- 顶部导航 ---------- */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  border-bottom: 1px solid transparent;
  transition: background-color 0.3s, border-color 0.3s;
}
.site-header.scrolled {
  background: rgba(246, 242, 234, 0.9);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-color: var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: var(--header-h);
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.brand-mark {
  display: grid;
  place-items: center;
  flex: none;
  width: 34px;
  height: 34px;
  border-radius: 6px;
  background: var(--navy);
  color: #d29c62;
  font-family: var(--latin);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.brand-name {
  font-family: var(--latin);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.header-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-links { display: flex; gap: 28px; }
.nav-links a {
  font-size: 14px;
  color: var(--ink-2);
  white-space: nowrap;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--ink); }

.lang { position: relative; flex: none; }
.lang select {
  -webkit-appearance: none;
  appearance: none;
  max-width: 150px;
  padding: 8px 32px 8px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: var(--surface);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 13px;
  line-height: 1.4;
  cursor: pointer;
}
.lang select:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.lang::after {
  content: "";
  position: absolute;
  top: 50%;
  inset-inline-end: 14px;
  width: 5px;
  height: 5px;
  border-right: 1.5px solid var(--ink-2);
  border-bottom: 1.5px solid var(--ink-2);
  transform: translateY(-70%) rotate(45deg);
  pointer-events: none;
}
[dir="rtl"] .lang select { padding: 8px 14px 8px 32px; }

@media (max-width: 900px) {
  .nav-links { display: none; }
}
@media (max-width: 560px) {
  :root { --header-h: 62px; }
  .brand-name { font-size: 14px; }
  .lang select { max-width: 120px; }
}

/* ---------- 首屏：左文右图 ---------- */

.hero {
  padding-top: calc(var(--header-h) + clamp(32px, 6vw, 72px));
  padding-bottom: clamp(56px, 8vw, 104px);
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(40px, 6vw, 96px);
  align-items: center;
}
.hero h1 {
  margin: 28px 0 24px;
  font-size: clamp(38px, 4.6vw, 64px);
  line-height: 1.08;
  text-wrap: balance;
}
:lang(zh-Hans) .hero h1, :lang(zh-Hant) .hero h1, :lang(ja) .hero h1 { line-height: 1.25; }
.hero-sub {
  max-width: 520px;
  font-size: clamp(16px, 1.3vw, 18px);
  color: var(--ink-2);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 28px;
  margin-top: 40px;
}
.scroll-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-2);
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 2px;
  transition: color 0.2s, border-color 0.2s;
}
.scroll-link:hover { color: var(--ink); border-color: var(--ink); }

.hero-figure {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border-radius: 4px;
  background: var(--bg-2);
}
.hero-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-figure::after {
  content: "";
  position: absolute;
  inset-inline-start: -1px;
  bottom: -1px;
  width: 38%;
  height: 6px;
  background: var(--accent);
}

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); }
  .hero-figure { aspect-ratio: 16 / 10; }
}
@media (max-width: 560px) {
  .hero .cta { width: 100%; }
  .scroll-link { display: none; }
  :lang(zh-Hans) .hero h1,
  :lang(zh-Hant) .hero h1,
  :lang(ja) .hero h1 { font-size: min(32px, 8.4vw); }
}

/* ---------- 按钮 ---------- */

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 15px 26px;
  border: 0;
  border-radius: 6px;
  background: var(--navy);
  color: #f6f2ea;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.4;
  text-align: center;
  cursor: pointer;
  transition: background-color 0.25s;
}
.cta:hover { background: var(--accent); }
.cta:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.cta .arrow { display: inline-block; transition: transform 0.25s; }
.cta:hover .arrow { transform: translateX(3px); }
[dir="rtl"] .cta .arrow { transform: scaleX(-1); }
[dir="rtl"] .cta:hover .arrow { transform: scaleX(-1) translateX(3px); }

/* ---------- 通用区块 ---------- */

.section { padding-block: clamp(72px, 9vw, 120px); }
.section-head {
  display: grid;
  justify-items: start;
  gap: 18px;
  max-width: 760px;
  margin-bottom: clamp(36px, 5vw, 56px);
}
.section-head h2 {
  font-size: clamp(30px, 3.4vw, 46px);
  line-height: 1.15;
  text-wrap: balance;
}
.section-head p { color: var(--ink-2); font-size: 17px; }

/* 引言：带铜色竖线的大字 */
.statement {
  padding-block: clamp(56px, 7vw, 96px);
  background: var(--surface);
  border-block: 1px solid var(--line);
}
.statement p {
  max-width: 980px;
  padding-inline-start: clamp(20px, 3vw, 36px);
  border-inline-start: 3px solid var(--accent);
  font-size: clamp(22px, 2.5vw, 32px);
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

/* 我们做什么：编号横排列表 */
.values-list { border-top: 1px solid var(--line-strong); }
.value {
  display: grid;
  grid-template-columns: 96px minmax(0, 0.9fr) minmax(0, 1.3fr);
  gap: 12px 32px;
  align-items: baseline;
  padding-block: 30px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.25s;
}
.value:hover { background: var(--surface); }
.value .num { font-size: 0; }
.value .num::before {
  content: attr(data-n);
  font-family: var(--latin);
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.04em;
}
.value h3 { font-size: clamp(20px, 1.8vw, 24px); line-height: 1.3; }
.value p { color: var(--ink-2); }

@media (max-width: 760px) {
  .value { grid-template-columns: 48px minmax(0, 1fr); }
  .value p { grid-column: 2; }
}

/* 对接方式：横幅图 + 三栏 */
.banner {
  aspect-ratio: 21 / 8;
  overflow: hidden;
  border-radius: 4px;
  background: var(--bg-2);
}
.banner img { width: 100%; height: 100%; object-fit: cover; }
.format-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin-top: 32px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--surface);
}
.format {
  padding: 32px clamp(20px, 2.4vw, 32px);
}
.format + .format { border-inline-start: 1px solid var(--line); }
.format .num {
  display: block;
  margin-bottom: 18px;
  font-family: var(--latin);
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
}
.format h3 { margin-bottom: 10px; font-size: 21px; line-height: 1.3; }
.format p { font-size: 15px; color: var(--ink-2); }

@media (max-width: 900px) {
  .banner { aspect-ratio: 16 / 9; }
  .format-grid { grid-template-columns: minmax(0, 1fr); }
  .format + .format { border-inline-start: 0; border-top: 1px solid var(--line); }
}

/* 适合谁 */
.audience { background: var(--bg-2); }
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(40px, 6vw, 96px);
  align-items: center;
}
.split .section-head { margin-bottom: 32px; }
.split-media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 4px;
  background: var(--bg);
}
.split-media img { width: 100%; height: 100%; object-fit: cover; }
.tags {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-strong);
}
.tags li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-block: 14px;
  border-bottom: 1px solid var(--line);
  font-weight: 500;
}
.tags li::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  background: var(--accent);
}

@media (max-width: 900px) {
  .split { grid-template-columns: minmax(0, 1fr); }
}

/* 加入流程：横向卡片 */
.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}
.step {
  position: relative;
  padding: 28px 24px 30px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--surface);
}
.step::before {
  counter-increment: step;
  content: "Step 0" counter(step);
  display: block;
  margin-bottom: 36px;
  font-family: var(--latin);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}
.step::after {
  content: "→";
  position: absolute;
  top: 24px;
  inset-inline-end: 22px;
  color: var(--ink-3);
}
.step:last-child::after { content: none; }
[dir="rtl"] .step::after { content: "←"; }
[dir="rtl"] .step:last-child::after { content: none; }
.step h3 { margin-bottom: 8px; font-size: 20px; line-height: 1.3; }
.step p { font-size: 15px; color: var(--ink-2); }

@media (max-width: 900px) {
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .steps { grid-template-columns: minmax(0, 1fr); }
  .step::after { content: "↓"; }
  [dir="rtl"] .step::after { content: "↓"; }
}

/* 常见问题 */
.faq { background: var(--surface); border-top: 1px solid var(--line); }
.faq-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.6fr);
  gap: clamp(32px, 6vw, 96px);
  align-items: start;
}
.faq-grid .section-head { margin-bottom: 0; }
.faq-list { border-top: 1px solid var(--line-strong); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  padding-block: 24px;
  list-style: none;
  font-size: clamp(17px, 1.5vw, 19px);
  font-weight: 600;
  line-height: 1.45;
  cursor: pointer;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "";
  flex: none;
  width: 10px;
  height: 10px;
  margin-top: 6px;
  border-right: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(45deg);
  transition: transform 0.25s;
}
.faq-item[open] summary::after { transform: rotate(-135deg); }
.faq-item summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.faq-item p { max-width: 720px; padding-bottom: 26px; color: var(--ink-2); }

@media (max-width: 900px) {
  .faq-grid { grid-template-columns: minmax(0, 1fr); }
}

/* 结尾：墨蓝色横条 */
.final {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: clamp(72px, 9vw, 112px);
  background: var(--navy);
  color: #f3eee4;
}
.final-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}
.final-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.35;
}
.final-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px 48px;
}
.final .eyebrow { color: #d9cdb9; border-color: rgba(243, 238, 228, 0.3); }
.final h2 {
  max-width: 720px;
  margin: 22px 0 14px;
  font-size: clamp(30px, 3.6vw, 48px);
  line-height: 1.15;
  text-wrap: balance;
}
.final p { color: #c9c2b5; }
.final .cta { background: #d29c62; color: var(--navy); }
.final .cta:hover { background: #f3eee4; }
@media (max-width: 560px) {
  .final .cta { width: 100%; }
}

/* 页脚 */
.site-footer {
  padding-block: 52px 40px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--ink-3);
}
.footer-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
}
.footer-top .brand-name { color: var(--ink); }
.footer-circles {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 24px;
}
.footer-circles .label { color: var(--ink-3); }
.footer-circles a { color: var(--ink-2); font-weight: 500; }
.footer-circles a:hover { color: var(--accent); }
#footer-links { display: contents; }
.disclaimer { max-width: 900px; padding-top: 24px; line-height: 1.8; }
.copyright { margin-top: 12px; }

img.missing { visibility: hidden; }

/* 进场动画 */
.js main { opacity: 0; transition: opacity 0.4s ease; }
.js body.ready main { opacity: 1; }
.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.js .reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
}