/* ============================================
   Soulai - style.css
   深青 + 靛紫 | 毛玻璃 | 深色科技风
   ============================================ */

:root {
  --source-accent: #0d4a55;
  --source-second: #1e1240;
  --bg: #0f1421;
  --panel: rgba(20, 28, 42, .78);
  --ink: #eef2f8;
  --muted: #8b97a8;
  --accent: #1a6b7a;
  --second: #2a1850;
  --line: rgba(255, 255, 255, .16);
  --radius: 6px;
  --stroke: 1px;
  --shadow: 0 26px 70px rgba(0, 0, 0, .35);
}

/* ---------- Reset ---------- */
html { scroll-behavior: smooth; }
* { box-sizing: border-box; }

body {
  margin: 0;
  background: linear-gradient(180deg,
    color-mix(in srgb, var(--source-accent) 4%, var(--bg)),
    var(--bg) 28%,
    color-mix(in srgb, var(--source-second) 4%, var(--bg)));
  color: var(--ink);
  font-family: Consolas, "Microsoft YaHei", monospace;
  line-height: 1.65;
  overflow-x: hidden;
}

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

/* ---------- Container ---------- */
.soulai-container {
  width: min(1200px, calc(100% - 44px));
  margin-inline: auto;
}

/* ---------- Header ---------- */
.soulai-header {
  height: 74px;
  display: flex;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 30;
  background: linear-gradient(105deg,
    color-mix(in srgb, var(--bg) 86%, var(--source-accent)),
    color-mix(in srgb, var(--bg) 90%, transparent),
    color-mix(in srgb, var(--bg) 88%, var(--source-second)));
  border-bottom: var(--stroke) solid var(--line);
  backdrop-filter: blur(17px) saturate(145%);
  -webkit-backdrop-filter: blur(17px) saturate(145%);
}

.soulai-header-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 13px;
}

.soulai-logo {
  justify-self: start;
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 18px;
  font-weight: 900;
  white-space: nowrap;
}

.soulai-logo img {
  width: 38px;
  height: 38px;
  object-fit: cover;
  border-radius: calc(var(--radius) / 2);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--source-accent) 24%, transparent);
}

.soulai-nav {
  justify-self: center;
  display: flex;
  align-items: center;
  gap: 3px;
  font-size: 13px;
}

.soulai-nav a {
  padding: 8px 8px;
  border-bottom: 1px solid transparent;
  white-space: nowrap;
}

.soulai-nav a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.soulai-header-actions {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 10px;
}

.soulai-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 15px;
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--second) 76%, var(--accent)));
  color: #fff;
  font-weight: 800;
  border-radius: 999px;
  box-shadow: 0 10px 26px color-mix(in srgb, var(--accent) 24%, transparent);
}

.soulai-menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: var(--radius);
}

/* ---------- Hero ---------- */
.soulai-hero {
  height: calc(100svh - 74px);
  min-height: 610px;
  max-height: 900px;
  padding: 50px 0;
  display: flex;
  align-items: center;
  overflow: hidden;
  position: relative;
  isolation: isolate;
  background: linear-gradient(105deg,
    color-mix(in srgb, var(--source-accent) 11%, var(--bg)) 0%,
    var(--bg) 48%,
    color-mix(in srgb, var(--source-second) 8%, var(--bg)) 100%);
}

.soulai-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: .28;
  background: repeating-linear-gradient(0deg,
    transparent 0 63px,
    color-mix(in srgb, var(--source-accent) 9%, transparent) 64px);
}

.soulai-hero::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  z-index: 5;
  background: linear-gradient(90deg, transparent, var(--source-accent), var(--source-second), transparent);
}

.soulai-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, .88fr);
  gap: clamp(42px, 7vw, 96px);
  align-items: center;
}

.soulai-hero-left {
  position: relative;
  min-width: 0;
}

.soulai-hero-badge {
  position: absolute;
  inset: -42px auto auto -26px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--accent);
  font-size: 11px;
}

.soulai-hero-badge > span {
  width: 38px;
  height: 1px;
  background: linear-gradient(90deg, var(--source-accent), var(--source-second));
}

.soulai-hero-badge > i { font-size: 16px; }
.soulai-hero-badge > b { font-weight: 800; }

.soulai-hero-text {
  position: relative;
  z-index: 2;
}

.soulai-hero-tagline,
.soulai-section-label {
  display: inline-flex;
  width: max-content;
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 1px;
  padding: 4px 9px;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) / 2);
  background: color-mix(in srgb, var(--panel) 66%, transparent);
  backdrop-filter: blur(12px);
}

.soulai-hero-text h1 {
  font-size: clamp(58px, 7vw, 82px);
  line-height: 1.02;
  margin: 0;
  font-weight: 900;
  letter-spacing: 0;
}

.soulai-hero-desc {
  max-width: 560px;
  color: var(--muted);
  font-size: 16px;
  margin: 18px 0 22px;
}

.soulai-hero-cta {
  display: flex;
  gap: 11px;
  flex-wrap: wrap;
}

.soulai-cta-main,
.soulai-cta-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 19px;
  font-weight: 900;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.soulai-cta-main {
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--second) 72%, var(--accent)));
  color: #fff;
  border-color: color-mix(in srgb, var(--accent) 72%, var(--second));
  box-shadow: 0 12px 28px color-mix(in srgb, var(--accent) 25%, transparent);
}

.soulai-cta-secondary {
  background: color-mix(in srgb, var(--panel) 72%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.soulai-hero-tags {
  display: flex;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.soulai-hero-tags li {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 8px;
  border: 1px solid color-mix(in srgb, var(--source-accent) 16%, var(--line));
  background: color-mix(in srgb, var(--panel) 55%, transparent);
  backdrop-filter: blur(12px);
}

.soulai-hero-tags i { color: var(--accent); }

/* ---------- Hero Right (image + decorations) ---------- */
.soulai-hero-right {
  position: relative;
  min-width: 0;
  height: 520px;
  display: grid;
  place-items: center;
}

.soulai-hero-right::before {
  content: '';
  position: absolute;
  inset: 7% -5%;
  border: 1px solid color-mix(in srgb, var(--source-accent) 22%, transparent);
  background: repeating-linear-gradient(90deg,
    transparent 0 39px,
    color-mix(in srgb, var(--source-second) 8%, transparent) 40px);
  opacity: .62;
  pointer-events: none;
}

.soulai-hero-deco {
  position: absolute;
  inset: 0;
  z-index: 6;
  pointer-events: none;
  font-size: 10px;
  letter-spacing: 0;
}

.soulai-hero-deco-label {
  position: absolute;
  right: -8px;
  top: 10%;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 10px;
  font-weight: 900;
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--source-accent) 24%, var(--line));
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--panel) 86%, var(--source-accent) 14%),
    color-mix(in srgb, var(--panel) 72%, transparent));
  box-shadow: 0 12px 34px color-mix(in srgb, var(--source-second) 14%, transparent);
  backdrop-filter: blur(16px) saturate(145%);
  -webkit-backdrop-filter: blur(16px) saturate(145%);
}

.soulai-hero-img-wrap {
  position: relative;
  width: 88%;
}

.soulai-hero-img-wrap > i {
  position: absolute;
  border: 1px solid var(--accent);
  border-radius: 50%;
}

.soulai-hero-img-wrap > i:nth-of-type(1) {
  width: 48px;
  height: 48px;
  left: -24px;
  top: 18%;
}

.soulai-hero-img-wrap > i:nth-of-type(2) {
  width: 18px;
  height: 18px;
  right: -9px;
  top: 8%;
}

.soulai-hero-img-wrap > i:nth-of-type(3) {
  width: 72px;
  height: 72px;
  right: -36px;
  bottom: 12%;
}

.soulai-hero-img-box {
  position: relative;
  min-width: 0;
  z-index: 2;
}

.soulai-hero-img-box img {
  width: 100%;
  height: 460px;
  object-fit: cover;
  object-position: top;
  border: var(--stroke) solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.soulai-hero-img-box > span {
  position: absolute;
  right: 12px;
  bottom: 12px;
  padding: 7px 11px;
  background: linear-gradient(135deg, var(--accent), var(--second));
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  border-radius: calc(var(--radius) / 2);
  backdrop-filter: blur(10px);
}

/* ---------- Section Shared ---------- */
.soulai-section {
  padding: 98px 0;
}

.soulai-product,
.soulai-faq {
  background: color-mix(in srgb, var(--accent) 4%, var(--bg));
}

.soulai-features {
  background: color-mix(in srgb, var(--second) 3%, var(--bg));
}

.soulai-section-head {
  position: relative;
  margin-bottom: 52px;
}

.soulai-section-center {
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.soulai-section-title {
  font-size: 44px;
  line-height: 1.15;
  font-weight: 650;
}

.soulai-section-desc {
  max-width: 680px;
  color: var(--muted);
  font-size: 14px;
  margin-top: 13px;
}

.soulai-section-center .soulai-section-desc {
  margin-inline: auto;
}

.soulai-section-number {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  color: var(--accent);
  font-size: 10px;
}

.soulai-section-number i {
  display: block;
  width: 28px;
  height: 1px;
  background: var(--accent);
}

.soulai-section-number b {
  min-width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
}

.soulai-section-center .soulai-section-label {
  letter-spacing: 2px;
}

.soulai-section-center .soulai-section-number b {
  background: var(--accent);
  color: #fff;
}

/* ---------- Features ---------- */
.soulai-features-wrap {
  position: relative;
}

.soulai-features-wrap > .soulai-features-spark,
.soulai-features-wrap > b {
  color: var(--accent);
  font-size: 11px;
}

.soulai-features-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.soulai-feature-card {
  min-height: 269px;
  padding: 22px;
  background: linear-gradient(145deg,
    color-mix(in srgb, var(--panel) 88%, var(--source-accent) 12%),
    color-mix(in srgb, var(--panel) 74%, transparent));
  border: var(--stroke) solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  position: relative;
  backdrop-filter: blur(20px) saturate(135%);
  -webkit-backdrop-filter: blur(20px) saturate(135%);
}

.soulai-feature-card > i {
  width: 47px;
  height: 47px;
  display: grid;
  place-items: center;
  color: var(--accent);
  font-size: 23px;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) / 2);
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--source-accent) 16%, transparent),
    color-mix(in srgb, var(--source-second) 10%, transparent));
}

.soulai-feature-num {
  position: absolute;
  right: 18px;
  top: 15px;
  color: var(--muted);
  font-size: 11px;
}

.soulai-feature-name {
  font-size: 19px;
  font-weight: 800;
  margin: 20px 0 8px;
}

.soulai-feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.soulai-feature-card:nth-child(3n+2) {
  min-height: 320px;
  background: color-mix(in srgb, var(--panel) 80%, var(--second) 20%);
}

/* ---------- Product Showcase ---------- */
.soulai-product-list {
  position: relative;
}

.soulai-product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.soulai-product-card {
  min-width: 0;
}

.soulai-product-card:nth-child(odd) {
  transform: rotate(-1deg);
}

.soulai-product-card:nth-child(even) {
  transform: rotate(1deg);
}

.soulai-product-img {
  height: 430px;
  overflow: hidden;
  background: linear-gradient(145deg,
    color-mix(in srgb, var(--panel) 84%, var(--source-accent) 16%),
    var(--panel));
  border: var(--stroke) solid color-mix(in srgb, var(--source-accent) 32%, var(--line));
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  position: relative;
}

.soulai-product-img::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid color-mix(in srgb, var(--source-second) 18%, transparent);
  pointer-events: none;
}

.soulai-product-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}

.soulai-product-label {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 0;
}

.soulai-product-label span {
  font-size: 10px;
  color: var(--accent);
}

.soulai-product-label strong {
  font-size: 12px;
}

.soulai-product-list > p {
  margin: 18px 0 0;
  color: var(--accent);
  font-size: 10px;
  letter-spacing: 2px;
}

/* ---------- FAQ ---------- */
.soulai-faq-wrap {
  position: relative;
}

.soulai-faq-deco {
  position: absolute;
  left: 50%;
  top: -18px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  color: color-mix(in srgb, var(--accent) 42%, transparent);
  font-size: 10px;
  pointer-events: none;
}

.soulai-faq-deco i { font-size: 18px; }

.soulai-faq-list {
  width: min(100%, 970px);
  margin-inline: auto;
}

.soulai-faq-item {
  margin: 0 0 17px;
  padding: 0 16px;
  background: linear-gradient(145deg,
    color-mix(in srgb, var(--panel) 90%, var(--source-accent) 10%),
    color-mix(in srgb, var(--panel) 78%, transparent));
  border: var(--stroke) solid var(--line);
  border-radius: var(--radius);
  box-shadow: 6px 6px 0 color-mix(in srgb, var(--accent) 14%, transparent);
  backdrop-filter: blur(18px) saturate(135%);
  -webkit-backdrop-filter: blur(18px) saturate(135%);
}

.soulai-faq-item button {
  width: 100%;
  display: grid;
  grid-template-columns: 36px 1fr 30px;
  gap: 10px;
  align-items: center;
  text-align: left;
  border: 0;
  background: transparent;
  padding: 20px 0;
  cursor: pointer;
}

.soulai-faq-item button span {
  color: var(--accent);
  font-size: 10px;
}

.soulai-faq-item button > i {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--source-accent) 14%, transparent),
    color-mix(in srgb, var(--source-second) 10%, transparent));
  border-radius: 50%;
  transition: .25s;
}

.soulai-faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .28s;
}

.soulai-faq-answer p {
  overflow: hidden;
  color: var(--muted);
  margin: 0;
  max-width: 720px;
  font-size: 13px;
}

.soulai-faq-item.soulai-faq-open .soulai-faq-answer {
  grid-template-rows: 1fr;
}

.soulai-faq-item.soulai-faq-open .soulai-faq-answer p {
  margin-bottom: 20px;
}

.soulai-faq-item.soulai-faq-open button > i {
  transform: rotate(45deg);
}

/* ---------- Reviews ---------- */
.soulai-reviews-grid {
  columns: 3;
  column-gap: 12px;
}

.soulai-review-card {
  break-inside: avoid;
  margin: 0 0 12px;
  padding: 22px;
  background: linear-gradient(155deg,
    color-mix(in srgb, var(--panel) 90%, var(--source-second) 10%),
    color-mix(in srgb, var(--panel) 76%, transparent));
  border: var(--stroke) solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  position: relative;
  backdrop-filter: blur(18px) saturate(135%);
  -webkit-backdrop-filter: blur(18px) saturate(135%);
  outline: 1px solid var(--line);
  outline-offset: -7px;
}

.soulai-review-stars {
  display: flex;
  gap: 2px;
  color: var(--accent);
  font-size: 12px;
}

.soulai-review-card blockquote {
  margin: 17px 0 22px;
  font-size: 16px;
}

.soulai-review-card footer {
  display: flex;
  align-items: center;
  gap: 10px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.soulai-review-avatar {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--second));
  color: #fff;
  border-radius: 50%;
  font-weight: 900;
}

.soulai-review-card footer p {
  display: grid;
  flex: 1;
  margin: 0;
}

.soulai-review-time {
  font-size: 10px;
  color: var(--muted);
}

.soulai-review-badge {
  width: max-content;
  margin-top: 12px;
  padding: 3px 8px;
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  color: var(--accent);
  font-size: 10px;
  border-radius: 999px;
}

/* ---------- Footer ---------- */
.soulai-footer {
  padding: 48px 0 22px;
  background: color-mix(in srgb, var(--ink) 94%, var(--accent));
  color: var(--bg);
}

.soulai-footer-top {
  display: grid;
  grid-template-columns: 1fr .7fr .5fr;
  gap: 28px;
  align-items: start;
  padding-bottom: 34px;
  border-bottom: 1px solid color-mix(in srgb, var(--bg) 20%, transparent);
}

.soulai-footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 900;
}

.soulai-footer-logo img {
  width: 42px;
  height: 42px;
  object-fit: cover;
  border-radius: calc(var(--radius) / 2);
}

.soulai-footer-desc {
  max-width: 470px;
  color: color-mix(in srgb, var(--bg) 68%, transparent);
  font-size: 13px;
}

.soulai-footer-links {
  display: grid;
  gap: 7px;
  font-size: 12px;
}

.soulai-footer-social {
  display: flex;
  gap: 8px;
  margin-top: 14px;
}

.soulai-footer-social a {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--bg) 28%, transparent);
  border-radius: 50%;
}

.soulai-footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-top: 18px;
  color: color-mix(in srgb, var(--bg) 58%, transparent);
  font-size: 10px;
}

/* ============================================
   Responsive (max-width: 700px)
   ============================================ */
@media (max-width: 700px) {
  .soulai-container {
    width: min(100% - 28px, 1200px);
  }

  .soulai-header {
    height: 66px;
  }

  .soulai-header-inner {
    grid-template-columns: 1fr auto;
    gap: 10px;
  }

  .soulai-nav {
    display: none;
    position: absolute;
    left: 14px;
    right: 14px;
    top: 72px;
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    background: var(--bg);
    color: var(--ink);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
  }

  .soulai-nav.soulai-nav-open {
    display: flex !important;
  }

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  .soulai-product-card {
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