/* ============================================================
   富港汇 FuGangHui — redesigned homepage
   Design tokens lifted from the repo (assets/styles/global)
   ============================================================ */
:root {
  /* neutrals */
  --cbi-black: #131523;
  --cbi-black-2: #333752;
  --cbi-black-3: #5a607f;
  --cbi-black-4: #7e84a3;
  --cbi-white: #ffffff;
  --cbi-gray: #bbbfd6;
  --cbi-gray-2: #d7dbec;
  --cbi-gray-3: #e6e9f4;
  --cbi-gray-4: #f5f6fa;

  /* brand */
  --cbi-blue: #1460ff;
  --cbi-blue-2: #6e88ff;
  --cbi-green: #0ecb8f;
  --cbi-teal: #33bba9;

  /* gradients */
  --grad: linear-gradient(90deg, #67ceac 0%, #5162df 100%);
  --grad-soft: linear-gradient(90deg, #46b590 0%, #3d5bd3 100%);
  --grad-text: linear-gradient(90deg, #00987e 0%, #3d5bd3 100%);
  --grad-vivid: linear-gradient(90deg, #03df92 0%, #1365fa 100%);
  --grad-banner: linear-gradient(120deg, #edeff6 0%, #eaf4f0 52%, #f0f9f5 100%);

  /* layout */
  --maxw: 1200px;
  --pad: 32px;
  --header-h: 76px;

  /* shadow */
  --sh-sm: 0 4px 18px rgba(16, 40, 90, 0.06);
  --sh-md: 0 18px 44px rgba(16, 40, 90, 0.09);
  --sh-lg: 0 40px 80px rgba(16, 40, 90, 0.14);

  --r-lg: 24px;
  --r-md: 16px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "Poppins", "PingFang SC", "Microsoft YaHei", -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--cbi-black);
  background: #fff;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.layout {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--pad);
  padding-right: var(--pad);
}

.text-gradient {
  background-image: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* section heading shared */
.sec-head { margin-bottom: 56px; }
.sec-title {
  font-size: 38px;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.sec-desc {
  margin-top: 16px;
  font-size: 17px;
  color: var(--cbi-black-3);
  line-height: 1.6;
  max-width: 720px;
}

/* =========================================================
   BUTTONS
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  height: 56px;
  padding: 0 30px;
  border-radius: 999px;
  font-size: 17px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease),
    background 0.4s var(--ease);
  white-space: nowrap;
  font-family: inherit;
}
.btn .arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.22);
  transition: transform 0.4s var(--ease);
}
.btn .arrow svg { width: 13px; height: 13px; }
.btn:hover .arrow { transform: translateX(4px); }

.btn-grad {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 14px 30px rgba(64, 113, 194, 0.32);
}
.btn-grad:hover { transform: translateY(-3px); box-shadow: 0 20px 40px rgba(64, 113, 194, 0.4); }

.btn-white { background: #fff; color: var(--cbi-black); box-shadow: var(--sh-md); }
.btn-white .arrow { background: var(--grad); color: #fff; }
.btn-white:hover { transform: translateY(-3px); box-shadow: var(--sh-lg); }

.btn-dark { background: var(--cbi-black); color: #fff; }
.btn-dark:hover { transform: translateY(-3px); }

/* circular nav button (testimonial) */
.btn-circle {
  width: 64px; height: 64px;
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: all 0.35s var(--ease);
  border: 1.5px solid var(--cbi-gray-2);
  background: #fff; color: var(--cbi-black);
}
.btn-circle:hover:not(:disabled) { background: var(--cbi-black); color: #fff; border-color: var(--cbi-black); transform: translateY(-2px); }
.btn-circle:disabled { color: var(--cbi-gray); border-color: var(--cbi-gray-3); cursor: not-allowed; }
.btn-circle svg { width: 22px; height: 22px; }

/* =========================================================
   REVEAL ANIMATION
   ========================================================= */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
  transition-delay: var(--delay, 0s);
  will-change: opacity, transform;
}
[data-reveal].in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
}

/* floating diamonds */
.diamond {
  position: absolute;
  width: 12px; height: 12px;
  border-radius: 3px;
  transform: rotate(45deg);
  z-index: 1;
}
.diamond.blue { background: var(--cbi-blue); }
.diamond.green { background: var(--cbi-green); }
.diamond.soft { background: var(--cbi-blue-2); opacity: 0.5; }
@keyframes floaty {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50% { transform: rotate(45deg) translateY(-14px); }
}
@keyframes bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-18px); }
}