/* ==========================================================================
   奇点拾音 AURORA TECH — 官网样式表
   Liquid Glass / Glassmorphism 视觉系统
   ========================================================================== */

/* ------------------------------ 1. 设计令牌 ------------------------------ */
:root {
  /* 品牌色 */
  --c-blue:   #4d7cff;
  --c-cyan:   #38e1ff;
  --c-violet: #a855f7;
  --c-pink:   #ff6ec7;

  /* 渐变 */
  --grad-brand: linear-gradient(120deg, #38e1ff 0%, #4d7cff 42%, #a855f7 100%);
  --grad-stat:  linear-gradient(115deg, #38e1ff 0%, #6f9dff 52%, #a855f7 100%);
  --grad-soft:  linear-gradient(120deg, rgba(56,225,255,.18), rgba(168,85,247,.18));

  /* 玻璃 */
  --glass-bg:
    linear-gradient(150deg,
      rgba(255,255,255,.105) 0%,
      rgba(255,255,255,.055) 38%,
      rgba(255,255,255,.025) 100%);
  --glass-bg-strong:
    linear-gradient(150deg,
      rgba(255,255,255,.16) 0%,
      rgba(255,255,255,.07) 45%,
      rgba(255,255,255,.03) 100%);
  --glass-brd:  rgba(255,255,255,.14);
  --glass-brd-hi: rgba(255,255,255,.34);
  --glass-shadow:
    0 2px 6px rgba(0,0,0,.28),
    0 18px 46px -14px rgba(0,0,0,.62),
    0 42px 90px -40px rgba(8,14,45,.9);
  --glass-inset:
    inset 0 1px 0 rgba(255,255,255,.34),
    inset 0 -1px 0 rgba(255,255,255,.05),
    inset 1px 0 0 rgba(255,255,255,.06),
    inset -1px 0 0 rgba(255,255,255,.06);
  --blur: 22px;
  --sat: 175%;

  /* 文字 */
  --text:   #e9eefb;
  --text-2: #b9c4e2;
  --muted:  #8b97bb;
  --line:   rgba(255,255,255,.09);

  /* 页面 */
  --bg:      #05060f;
  --bg-soft: #080b1a;
  --orb-a: rgba(56,225,255,.30);
  --orb-b: rgba(77,124,255,.34);
  --orb-c: rgba(168,85,247,.30);
  --orb-d: rgba(255,110,199,.18);
  --noise-op: .045;
  --grid-op: .28;

  /* 尺寸 */
  --maxw: 1240px;
  --radius: 26px;
  --radius-sm: 16px;
  --radius-lg: 34px;
  --nav-h: 74px;

  --ease: cubic-bezier(.22,.68,0,1);
  --ff: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI Variable Display",
        "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI",
        "Microsoft YaHei", system-ui, sans-serif;
  --ff-mono: "JetBrains Mono", "SF Mono", "Cascadia Code", Consolas,
             "Liberation Mono", monospace;
}

/* 浅色主题 */
[data-theme="light"] {
  --glass-bg:
    linear-gradient(150deg,
      rgba(255,255,255,.86) 0%,
      rgba(255,255,255,.62) 45%,
      rgba(255,255,255,.42) 100%);
  --glass-bg-strong:
    linear-gradient(150deg,
      rgba(255,255,255,.95) 0%,
      rgba(255,255,255,.78) 100%);
  --glass-brd:  rgba(255,255,255,.95);
  --glass-brd-hi: rgba(255,255,255,1);
  --glass-shadow:
    0 2px 6px rgba(28,42,96,.05),
    0 18px 44px -16px rgba(28,42,96,.20),
    0 40px 90px -46px rgba(28,42,96,.30);
  --glass-inset:
    inset 0 1px 0 rgba(255,255,255,1),
    inset 0 -1px 0 rgba(255,255,255,.55),
    inset 1px 0 0 rgba(255,255,255,.7),
    inset -1px 0 0 rgba(255,255,255,.7);

  --text:   #0b1030;
  --text-2: #3c4a76;
  --muted:  #64719b;
  --line:   rgba(20,32,80,.10);

  --bg:      #eef1fa;
  --bg-soft: #f4f6fd;
  --orb-a: rgba(56,225,255,.42);
  --orb-b: rgba(77,124,255,.34);
  --orb-c: rgba(168,85,247,.30);
  --orb-d: rgba(255,110,199,.26);
  --noise-op: .03;
  --grid-op: .5;
}

[data-theme="light"] .brand__text em,
[data-theme="light"] .phone__brand,
[data-theme="light"] .codecard__head em { color: rgba(11,16,48,.45); }

/* 主题图标：深色显示太阳（切到浅色），浅色显示月亮（切到深色） */
.icon-moon { display: none; }
[data-theme="light"] .icon-sun  { display: none; }
[data-theme="light"] .icon-moon { display: block; }

/* ------------------------------ 2. 基础重置 ------------------------------ */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 18px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--ff);
  font-size: 16px;
  line-height: 1.72;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background .5s var(--ease), color .5s var(--ease);
}

body.is-locked { overflow: hidden; }

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; background: none; }
ul, ol, dl, dd, figure, blockquote { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0; line-height: 1.2; font-weight: 700; letter-spacing: -.02em; }
p { margin: 0; }
pre { margin: 0; }
em { font-style: normal; }

:focus-visible { outline: 2px solid var(--c-cyan); outline-offset: 3px; border-radius: 10px; }
::selection { background: rgba(77,124,255,.42); color: #fff; }

.svg-defs { position: absolute; width: 0; height: 0; overflow: hidden; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, rgba(77,124,255,.6), rgba(168,85,247,.6));
  border-radius: 99px;
  border: 3px solid transparent;
  background-clip: content-box;
}

/* ------------------------------ 3. 布局工具 ------------------------------ */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 26px;
}
.container--narrow { max-width: 880px; }

.section { padding: clamp(84px, 11vw, 140px) 0; position: relative; }
.section--tight { padding: clamp(64px, 8vw, 104px) 0; }

.sec-head {
  max-width: 760px;
  margin: 0 auto clamp(46px, 6vw, 68px);
  text-align: center;
}

.sec-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 16px;
}

.sec-title { font-size: clamp(30px, 4.4vw, 52px); margin-bottom: 18px; letter-spacing: -.035em; }

.sec-desc { color: var(--muted); font-size: clamp(15px, 1.6vw, 17px); line-height: 1.85; }

.grad-text {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  background-size: 200% 100%;
  animation: gradSlide 7s linear infinite;
}
@keyframes gradSlide { 0% { background-position: 0% 50%; } 100% { background-position: 200% 50%; } }

.grid { display: grid; gap: 22px; }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* ------------------------------ 4. 极光背景 ------------------------------ */
.aurora-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
  background: radial-gradient(120% 90% at 50% -10%, var(--bg-soft) 0%, var(--bg) 55%);
  transition: background .5s var(--ease);
}

.aurora-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(74px);
  opacity: .95;
  will-change: transform;
}

.blob-1 {
  width: 62vw; height: 62vw; max-width: 880px; max-height: 880px;
  top: -22vw; left: -12vw;
  background: radial-gradient(circle at 35% 35%, var(--orb-a), transparent 68%);
  animation: drift1 26s ease-in-out infinite;
}
.blob-2 {
  width: 56vw; height: 56vw; max-width: 780px; max-height: 780px;
  top: -8vw; right: -16vw;
  background: radial-gradient(circle at 60% 40%, var(--orb-c), transparent 68%);
  animation: drift2 32s ease-in-out infinite;
}
.blob-3 {
  width: 70vw; height: 70vw; max-width: 940px; max-height: 940px;
  bottom: -30vw; left: 8vw;
  background: radial-gradient(circle at 50% 50%, var(--orb-b), transparent 70%);
  animation: drift3 38s ease-in-out infinite;
}
.blob-4 {
  width: 40vw; height: 40vw; max-width: 560px; max-height: 560px;
  bottom: 8vw; right: -8vw;
  background: radial-gradient(circle at 50% 50%, var(--orb-d), transparent 70%);
  animation: drift1 30s ease-in-out infinite reverse;
}

@keyframes drift1 {
  0%,100% { transform: translate3d(0,0,0) scale(1); }
  50%     { transform: translate3d(6%, 8%, 0) scale(1.12); }
}
@keyframes drift2 {
  0%,100% { transform: translate3d(0,0,0) scale(1.05); }
  50%     { transform: translate3d(-8%, 10%, 0) scale(.94); }
}
@keyframes drift3 {
  0%,100% { transform: translate3d(0,0,0) scale(1); }
  50%     { transform: translate3d(9%, -7%, 0) scale(1.1); }
}

.aurora-grid {
  position: absolute;
  inset: -10%;
  opacity: var(--grid-op);
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: radial-gradient(115% 85% at 50% 12%, #000 12%, transparent 78%);
  -webkit-mask-image: radial-gradient(115% 85% at 50% 12%, #000 12%, transparent 78%);
}

.aurora-noise {
  position: absolute;
  inset: 0;
  opacity: var(--noise-op);
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ------------------------------ 5. 液态玻璃核心 ------------------------------ */
.glass {
  position: relative;
  isolation: isolate;
  border-radius: var(--radius);
  background: var(--glass-bg);
  border: 1px solid var(--glass-brd);
  box-shadow: var(--glass-shadow), var(--glass-inset);
  -webkit-backdrop-filter: blur(var(--blur)) saturate(var(--sat));
  backdrop-filter: blur(var(--blur)) saturate(var(--sat));
  transition:
    transform .55s var(--ease),
    border-color .4s var(--ease),
    box-shadow .55s var(--ease);
}

/* 镜面高光：位于玻璃底座之上、内容之下，跟随鼠标形成"液体"光斑 */
.glass::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  z-index: -1;
  opacity: 0;
  transition: opacity .45s var(--ease);
  background:
    radial-gradient(300px circle at var(--mx, 50%) var(--my, 0%),
      rgba(255,255,255,.34) 0%, rgba(255,255,255,.11) 40%, transparent 72%),
    radial-gradient(170px circle at var(--mx, 50%) var(--my, 0%),
      rgba(120,200,255,.30) 0%, transparent 76%);
}
.glass:hover::before { opacity: 1; }

[data-theme="light"] .glass::before {
  background:
    radial-gradient(320px circle at var(--mx, 50%) var(--my, 0%),
      rgba(255,255,255,.95) 0%, rgba(255,255,255,.4) 42%, transparent 74%),
    radial-gradient(170px circle at var(--mx, 50%) var(--my, 0%),
      rgba(77,124,255,.17) 0%, transparent 78%);
}

/* 边缘折射亮边 */
.glass::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  z-index: 1;
  padding: 1px;
  background: linear-gradient(160deg,
    rgba(255,255,255,.55) 0%,
    rgba(255,255,255,.06) 32%,
    transparent 58%,
    rgba(255,255,255,.10) 100%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: .9;
}

@supports not ((backdrop-filter: blur(2px)) or (-webkit-backdrop-filter: blur(2px))) {
  :root { --glass-bg: linear-gradient(150deg, rgba(24,30,58,.92), rgba(14,18,38,.88)); }
  [data-theme="light"] { --glass-bg: linear-gradient(150deg, rgba(255,255,255,.97), rgba(244,246,253,.94)); }
}

.card { padding: 30px 28px; overflow: hidden; }

.card__shine {
  position: absolute;
  left: 12%; right: 12%; bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-cyan), var(--c-violet), transparent);
  opacity: 0;
  transition: opacity .5s var(--ease);
  z-index: 3;
}
.card:hover .card__shine { opacity: .85; }
.card:hover { transform: translateY(-6px); border-color: var(--glass-brd-hi); }

/* ------------------------------ 6. 按钮 ------------------------------ */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 24px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .01em;
  white-space: nowrap;
  overflow: hidden;
  isolation: isolate;
  transition: transform .35s var(--ease), box-shadow .4s var(--ease),
              background-position .5s var(--ease), border-color .35s var(--ease);
}
.btn svg { width: 17px; height: 17px; flex: none; transition: transform .35s var(--ease); }
.btn:hover svg { transform: translateX(3px); }
.btn:active { transform: scale(.975); }

.btn--sm { padding: 10px 18px; font-size: 14px; }
.btn--lg { padding: 16px 32px; font-size: 16px; }
.btn--block { width: 100%; }

.btn--primary {
  color: #fff;
  border: 1px solid rgba(255,255,255,.28);
  background: linear-gradient(120deg, rgba(56,225,255,.95), rgba(77,124,255,.98) 48%, rgba(168,85,247,.95));
  background-size: 180% 100%;
  background-position: 0% 50%;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.5),
    inset 0 -8px 20px -8px rgba(0,0,0,.35),
    0 12px 30px -10px rgba(77,124,255,.7),
    0 22px 54px -22px rgba(168,85,247,.7);
}
.btn--primary::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(255,255,255,.55) 0%, transparent 42%);
  opacity: .55;
  z-index: -1;
}
.btn--primary:hover {
  background-position: 100% 50%;
  transform: translateY(-2px);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.55),
    0 16px 40px -10px rgba(77,124,255,.85),
    0 30px 70px -26px rgba(168,85,247,.85);
}

.btn--ghost {
  color: var(--text);
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-brd);
  -webkit-backdrop-filter: blur(16px) saturate(170%);
  backdrop-filter: blur(16px) saturate(170%);
  box-shadow: 0 10px 30px -14px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.3);
}
.btn--ghost:hover {
  transform: translateY(-2px);
  border-color: var(--glass-brd-hi);
  box-shadow: 0 16px 40px -14px rgba(0,0,0,.55), inset 0 1px 0 rgba(255,255,255,.45);
}

.icon-btn {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border-radius: 13px;
  color: var(--text-2);
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-brd);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  backdrop-filter: blur(14px) saturate(160%);
  transition: color .3s, border-color .3s, transform .4s var(--ease);
}
.icon-btn svg { width: 19px; height: 19px; }
.icon-btn:hover { color: var(--text); border-color: var(--glass-brd-hi); transform: translateY(-2px); }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 17px;
  border-radius: 999px;
  font-size: 13.5px;
  color: var(--text-2);
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-brd);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  backdrop-filter: blur(14px) saturate(160%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.28), 0 8px 24px -14px rgba(0,0,0,.6);
}
.pill b { color: var(--text); font-weight: 700; }
.pill__dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: #34d399;
  animation: pulseDot 2.4s ease-in-out infinite;
}
@keyframes pulseDot {
  0%,100% { box-shadow: 0 0 0 3px rgba(52,211,153,.2); }
  50%     { box-shadow: 0 0 0 8px rgba(52,211,153,0); }
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 9px 17px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
  background: rgba(255,255,255,.055);
  border: 1px solid var(--glass-brd);
  transition: all .3s var(--ease);
}
.chip:hover {
  color: var(--text);
  border-color: var(--glass-brd-hi);
  background: rgba(255,255,255,.1);
  transform: translateY(-2px);
}
[data-theme="light"] .chip { background: rgba(255,255,255,.7); }
[data-theme="light"] .chip:hover { background: #fff; }

.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.tag-list li {
  font-size: 12.5px;
  padding: 5px 12px;
  border-radius: 999px;
  color: var(--text-2);
  background: rgba(255,255,255,.06);
  border: 1px solid var(--line);
}
[data-theme="light"] .tag-list li { background: rgba(255,255,255,.75); }

/* ------------------------------ 7. 滚动进度 ------------------------------ */
.scroll-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  z-index: 200;
  background: transparent;
}
.scroll-progress span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--grad-brand);
  box-shadow: 0 0 14px rgba(77,124,255,.85);
  transition: width .1s linear;
}

/* ------------------------------ 8. 导航 ------------------------------ */
.nav {
  position: fixed;
  top: 14px; left: 0; right: 0;
  z-index: 150;
  transition: top .4s var(--ease);
}
.nav__inner {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 0 22px;
  border-radius: 22px;
  border: 1px solid transparent;
  transition: all .45s var(--ease);
}

.nav.is-stuck { top: 10px; }
.nav.is-stuck .nav__inner {
  background: var(--glass-bg-strong);
  border-color: var(--glass-brd);
  -webkit-backdrop-filter: blur(22px) saturate(180%);
  backdrop-filter: blur(22px) saturate(180%);
  box-shadow:
    0 2px 6px rgba(0,0,0,.2),
    0 20px 46px -20px rgba(0,0,0,.6),
    inset 0 1px 0 rgba(255,255,255,.3);
}
[data-theme="light"] .nav.is-stuck .nav__inner {
  box-shadow: 0 2px 6px rgba(28,42,96,.05), 0 20px 46px -20px rgba(28,42,96,.22), inset 0 1px 0 #fff;
}

.brand { display: inline-flex; align-items: center; gap: 12px; flex: none; }
.brand__orb {
  position: relative;
  width: 34px; height: 34px;
  border-radius: 50%;
  background: conic-gradient(from 210deg, #38e1ff, #4d7cff, #a855f7, #ff6ec7, #38e1ff);
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,.35),
    0 6px 18px -4px rgba(77,124,255,.8);
  animation: spinOrb 9s linear infinite;
}
.brand__orb::after {
  content: "";
  position: absolute;
  inset: 8px 8px 12px 9px;
  border-radius: 50%;
  background: radial-gradient(circle at 32% 28%, rgba(255,255,255,.9), transparent 62%);
}
@keyframes spinOrb { to { transform: rotate(360deg); } }

.brand__text { display: flex; flex-direction: column; line-height: 1.12; }
.brand__text strong { font-size: 16.5px; letter-spacing: .01em; }
.brand__text em { font-size: 9.5px; letter-spacing: .26em; color: var(--muted); font-weight: 600; }

.nav__links { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav__links a {
  position: relative;
  padding: 10px 15px;
  border-radius: 12px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text-2);
  transition: color .3s, background .3s;
}
.nav__links a::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 5px;
  width: 0; height: 2px;
  border-radius: 2px;
  background: var(--grad-brand);
  transform: translateX(-50%);
  transition: width .35s var(--ease);
}
.nav__links a:hover { color: var(--text); background: rgba(255,255,255,.06); }
.nav__links a:hover::after,
.nav__links a.is-current::after { width: 22px; }
.nav__links a.is-current { color: var(--text); }

.nav__actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }
.nav__links + .nav__actions { margin-left: 12px; }

/* 汉堡按钮（绝对定位，保证展开为 X） */
.nav__burger { display: none; position: relative; }
.nav__burger span {
  position: absolute;
  left: 50%; top: 50%;
  width: 17px; height: 1.8px;
  margin-left: -8.5px;
  border-radius: 2px;
  background: currentColor;
  transition: transform .38s var(--ease), opacity .25s;
}
.nav__burger span:nth-child(1) { transform: translateY(-5px); }
.nav__burger span:nth-child(2) { transform: translateY(0); }
.nav__burger span:nth-child(3) { transform: translateY(5px); }
.nav__burger[aria-expanded="true"] span:nth-child(1) { transform: rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav__burger[aria-expanded="true"] span:nth-child(3) { transform: rotate(-45deg); }

/* ------------------------------ 9. Hero ------------------------------ */
.hero {
  position: relative;
  padding: calc(var(--nav-h) + 74px) 0 92px;
  min-height: 100svh;
  display: flex;
  align-items: center;
}

.hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
  gap: clamp(30px, 5vw, 68px);
  align-items: center;
}

.hero__title {
  font-size: clamp(33px, 4.9vw, 68px);
  line-height: 1.08;
  letter-spacing: -.045em;
  margin: 22px 0 24px;
}

.hero__lead {
  font-size: clamp(15.5px, 1.75vw, 18px);
  line-height: 1.9;
  color: var(--muted);
  max-width: 560px;
}
.hero__lead b { color: var(--text); font-weight: 600; }

.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 36px 0 46px; }

.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0,1fr));
  gap: 8px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}
.stat__num {
  font-size: clamp(23px, 2.7vw, 34px);
  font-weight: 700;
  letter-spacing: -.035em;
  background: var(--grad-stat);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-variant-numeric: tabular-nums;
}
.stat__label { margin: 2px 0 0; font-size: 12.5px; color: var(--muted); }

/* Hero 舞台 */
.hero__stage { position: relative; min-height: 560px; perspective: 1400px; }
.stage__glow {
  position: absolute;
  inset: 6% 2% 10%;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 45%, rgba(77,124,255,.42), rgba(168,85,247,.22) 45%, transparent 72%);
  filter: blur(46px);
  z-index: 0;
}

/* 手机卡片 */
.phone {
  position: absolute;
  top: 54%; left: 42%;
  transform: translate(-50%, -50%);
  width: 264px;
  padding: 12px;
  border-radius: 40px;
  z-index: 3;
  animation: floatYCenter 7s ease-in-out infinite;
}
.phone__notch {
  position: absolute;
  top: 20px; left: 50%;
  transform: translateX(-50%);
  width: 62px; height: 15px;
  border-radius: 999px;
  background: rgba(4,7,18,.9);
  z-index: 4;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.08);
}
[data-theme="light"] .phone__notch { background: rgba(20,32,80,.85); }

.phone__screen {
  position: relative;
  border-radius: 30px;
  padding: 42px 15px 15px;
  background: linear-gradient(170deg, rgba(12,18,44,.92), rgba(7,10,26,.96));
  border: 1px solid rgba(255,255,255,.09);
  overflow: hidden;
}
[data-theme="light"] .phone__screen {
  background: linear-gradient(170deg, rgba(255,255,255,.95), rgba(238,242,252,.98));
  border-color: rgba(20,32,80,.08);
}

.phone__bar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.phone__brand { font-size: 10.5px; letter-spacing: .08em; color: rgba(233,238,251,.62); font-weight: 600; }
[data-theme="light"] .phone__brand { color: #64719b; }
.phone__dots { display: flex; gap: 4px; }
.phone__dots i { width: 5px; height: 5px; border-radius: 50%; background: rgba(255,255,255,.28); }
[data-theme="light"] .phone__dots i { background: rgba(20,32,80,.2); }

.phone__hero-card {
  position: relative;
  border-radius: 18px;
  padding: 15px 14px 13px;
  margin-bottom: 11px;
  background: linear-gradient(135deg, rgba(56,225,255,.22), rgba(77,124,255,.16) 45%, rgba(168,85,247,.2));
  border: 1px solid rgba(255,255,255,.16);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.28);
  overflow: hidden;
}
.ph-label { display: block; font-size: 10.5px; color: rgba(233,238,251,.66); letter-spacing: .04em; }
[data-theme="light"] .ph-label { color: #4a5a86; }
.ph-value {
  display: block;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -.03em;
  margin: 3px 0 2px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.ph-trend { font-size: 10.5px; color: #4ade80; font-weight: 600; }
[data-theme="light"] .ph-trend { color: #059669; }

.mini-bars { display: flex; align-items: flex-end; gap: 4px; height: 46px; margin-top: 11px; }
.mini-bars i {
  flex: 1;
  height: var(--h);
  border-radius: 3px 3px 1px 1px;
  background: linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,255,255,.34));
  animation: barGrow 1s var(--ease) backwards;
}
[data-theme="light"] .mini-bars i { background: linear-gradient(180deg, #4d7cff, #a855f7); opacity: .75; }
.mini-bars i:nth-child(2) { animation-delay: .06s; }
.mini-bars i:nth-child(3) { animation-delay: .12s; }
.mini-bars i:nth-child(4) { animation-delay: .18s; }
.mini-bars i:nth-child(5) { animation-delay: .24s; }
.mini-bars i:nth-child(6) { animation-delay: .3s; }
.mini-bars i:nth-child(7) { animation-delay: .36s; }
@keyframes barGrow { from { height: 0; } }

.phone__row { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; margin-bottom: 10px; }
.mini-card {
  padding: 10px 11px;
  border-radius: 13px;
  background: rgba(255,255,255,.055);
  border: 1px solid rgba(255,255,255,.1);
}
[data-theme="light"] .mini-card { background: rgba(20,32,80,.045); border-color: rgba(20,32,80,.07); }
.mini-card span { display: block; font-size: 10px; color: rgba(233,238,251,.58); }
[data-theme="light"] .mini-card span { color: #64719b; }
.mini-card b { font-size: 14.5px; font-weight: 700; font-variant-numeric: tabular-nums; }

.phone__list { display: grid; gap: 7px; }
.li {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 11px;
  border-radius: 12px;
  background: rgba(255,255,255,.045);
  border: 1px solid rgba(255,255,255,.08);
}
[data-theme="light"] .li { background: rgba(20,32,80,.04); border-color: rgba(20,32,80,.06); }
.li__ico { width: 20px; height: 20px; flex: none; border-radius: 7px; box-shadow: inset 0 1px 0 rgba(255,255,255,.4); }
.ico-a { background: linear-gradient(135deg, #38e1ff, #4d7cff); }
.ico-b { background: linear-gradient(135deg, #a855f7, #ff6ec7); }
.li__t { font-size: 11.5px; color: rgba(233,238,251,.75); }
[data-theme="light"] .li__t { color: #3c4a76; }

/* 代码卡 */
.codecard {
  position: absolute;
  top: -1%; right: -18px;
  width: 272px;
  padding: 14px 16px 18px;
  border-radius: 20px;
  z-index: 4;
  animation: floatY 8.5s ease-in-out infinite .6s;
}
.codecard__head { display: flex; align-items: center; gap: 6px; margin-bottom: 12px; }
.codecard__head .cd { width: 9px; height: 9px; border-radius: 50%; }
.cd:nth-child(1) { background: #ff5f57; }
.cd:nth-child(2) { background: #febc2e; }
.cd:nth-child(3) { background: #28c840; }
.codecard__head em { margin-left: auto; font-family: var(--ff-mono); font-size: 10.5px; color: rgba(233,238,251,.45); }
.codecard__body {
  font-family: var(--ff-mono);
  font-size: 11.5px;
  line-height: 1.85;
  color: rgba(233,238,251,.8);
  overflow: hidden;
}
[data-theme="light"] .codecard__body { color: #2b3763; }
.codecard__body .k { color: #ff8ad1; }
.codecard__body .v { color: #7dd3fc; }
.codecard__body .p { color: #a5b4fc; }
.codecard__body .s { color: #6ee7b7; }
.codecard__body .n { color: #fbbf24; }
.codecard__body .c { color: rgba(148,163,197,.72); }
[data-theme="light"] .codecard__body .k { color: #c026d3; }
[data-theme="light"] .codecard__body .v { color: #0369a1; }
[data-theme="light"] .codecard__body .p { color: #4338ca; }
[data-theme="light"] .codecard__body .s { color: #047857; }
[data-theme="light"] .codecard__body .n { color: #b45309; }
[data-theme="light"] .codecard__body .c { color: #94a3b8; }

/* 状态浮窗 */
.toast {
  position: absolute;
  bottom: 5%; left: -10px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 18px 13px 14px;
  border-radius: 18px;
  z-index: 5;
  animation: floatY 6.2s ease-in-out infinite .3s;
}
.toast__ico {
  width: 34px; height: 34px; flex: none;
  display: grid; place-items: center;
  border-radius: 11px;
  color: #fff;
  background: linear-gradient(135deg, #34d399, #10b981);
  box-shadow: 0 6px 18px -6px rgba(16,185,129,.9), inset 0 1px 0 rgba(255,255,255,.5);
}
.toast__ico svg { width: 17px; height: 17px; }
.toast strong { display: block; font-size: 13px; }
.toast small { font-size: 11px; color: var(--muted); }

@keyframes floatY {
  0%,100% { transform: translateY(0); }
  50%     { transform: translateY(-13px); }
}
@keyframes floatYCenter {
  0%,100% { transform: translate(-50%, -50%); }
  50%     { transform: translate(-50%, calc(-50% - 13px)); }
}

/* 浮动技术标签 */
.float-chip {
  position: absolute;
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-2);
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-brd);
  -webkit-backdrop-filter: blur(16px) saturate(170%);
  backdrop-filter: blur(16px) saturate(170%);
  box-shadow: 0 10px 26px -12px rgba(0,0,0,.65), inset 0 1px 0 rgba(255,255,255,.32);
  z-index: 6;
  white-space: nowrap;
}
.fc-1 { top: 2%;  left: 3%;  animation: floatChip 9s ease-in-out infinite; }
.fc-2 { top: 19%; left: -3%; animation: floatChip 11s ease-in-out infinite .6s; }
.fc-5 { top: 40%; right: -4%; animation: floatChip 9.6s ease-in-out infinite .3s; }
.fc-4 { top: 62%; left: 1%;  animation: floatChip 10s ease-in-out infinite 1.1s; }
.fc-3 { top: 70%; right: 1%; animation: floatChip 8.5s ease-in-out infinite 1.6s; }
.fc-6 { top: 90%; right: 30%; animation: floatChip 12s ease-in-out infinite 2s; }
@keyframes floatChip {
  0%,100% { transform: translate3d(0,0,0); }
  50%     { transform: translate3d(5px,-14px,0); }
}

/* 滚动提示 */
.scroll-hint {
  position: absolute;
  bottom: 30px; left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 9px;
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--muted);
  transition: color .3s;
}
.scroll-hint:hover { color: var(--text); }
.scroll-hint__mouse {
  width: 22px; height: 35px;
  border-radius: 999px;
  border: 1.5px solid currentColor;
  position: relative;
  opacity: .7;
}
.scroll-hint__mouse i {
  position: absolute;
  top: 7px; left: 50%;
  width: 3px; height: 7px;
  margin-left: -1.5px;
  border-radius: 2px;
  background: currentColor;
  animation: wheel 1.9s ease-in-out infinite;
}
@keyframes wheel {
  0%   { opacity: 0; transform: translateY(0); }
  35%  { opacity: 1; }
  100% { opacity: 0; transform: translateY(13px); }
}

/* ------------------------------ 10. 服务卡 ------------------------------ */
.service { display: flex; flex-direction: column; }
.service__ico {
  width: 54px; height: 54px;
  display: grid; place-items: center;
  border-radius: 17px;
  margin-bottom: 20px;
  color: #fff;
  background: linear-gradient(140deg, rgba(56,225,255,.9), rgba(77,124,255,.9) 50%, rgba(168,85,247,.9));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.5), 0 12px 30px -12px rgba(77,124,255,.9);
  transition: transform .5s var(--ease);
}
.service__ico svg { width: 26px; height: 26px; }
.service:hover .service__ico { transform: translateY(-3px) rotate(-6deg) scale(1.06); }
.service h3 { font-size: 19.5px; margin-bottom: 11px; }
.service p { font-size: 14.5px; line-height: 1.82; color: var(--muted); }
.service .tag-list { margin-top: auto; padding-top: 20px; }

/* ------------------------------ 11. 技术栈 ------------------------------ */
.stack { padding: 12px; border-radius: var(--radius-lg); }

.stack__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 8px;
  border-radius: 18px;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--line);
  margin-bottom: 12px;
}
[data-theme="light"] .stack__tabs { background: rgba(20,32,80,.035); }
.stack__tab {
  flex: 1 1 auto;
  padding: 11px 20px;
  border-radius: 13px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--muted);
  transition: all .35s var(--ease);
  white-space: nowrap;
}
.stack__tab:hover { color: var(--text); }
.stack__tab.is-active {
  color: #fff;
  background: linear-gradient(120deg, rgba(56,225,255,.85), rgba(77,124,255,.9) 50%, rgba(168,85,247,.85));
  box-shadow: 0 10px 26px -12px rgba(77,124,255,.95), inset 0 1px 0 rgba(255,255,255,.4);
}

.stack__panels { padding: 20px 14px 14px; }
.stack__panel { display: none; flex-wrap: wrap; gap: 10px; animation: fadeUp .5s var(--ease) backwards; }
.stack__panel.is-active { display: flex; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(10px); } }

/* ------------------------------ 12. 案例 ------------------------------ */
.case { padding: 0; display: flex; flex-direction: column; }

.case__visual {
  position: relative;
  height: 186px;
  overflow: hidden;
  border-radius: var(--radius) var(--radius) 0 0;
  display: grid;
  place-items: center;
  border-bottom: 1px solid var(--line);
}
.case__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 100% at 50% 0%, rgba(255,255,255,.22), transparent 60%);
  pointer-events: none;
}
.v-1 { background: linear-gradient(140deg, #0e2a4d, #1b3f7a 45%, #2f5fa8); }
.v-2 { background: linear-gradient(140deg, #2a1246, #4c1d95 45%, #6d28d9); }
.v-3 { background: linear-gradient(140deg, #062b30, #0f766e 45%, #14b8a6); }
.v-4 { background: linear-gradient(140deg, #341026, #9d174d 48%, #db2777); }
.v-5 { background: linear-gradient(140deg, #1a2547, #3730a3 48%, #4f46e5); }
.v-6 { background: linear-gradient(140deg, #12203f, #1d4ed8 48%, #38bdf8); }

.case__badge {
  position: absolute;
  top: 14px; left: 14px;
  z-index: 3;
  padding: 5px 13px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 600;
  color: #fff;
  background: rgba(255,255,255,.16);
  border: 1px solid rgba(255,255,255,.28);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.case__body { padding: 24px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.case__body h3 { font-size: 17.5px; margin-bottom: 10px; }
.case__body p { font-size: 14px; color: var(--muted); line-height: 1.78; }

.case__metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: auto;
  padding-top: 22px;
}
.case__metrics div { text-align: center; }
.case__metrics b {
  display: block;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -.02em;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.case__metrics span { font-size: 11.5px; color: var(--muted); }

/* 缩略图抽象组件 */
.mock { position: relative; z-index: 2; }

.mock--app {
  width: 96px; height: 130px;
  border-radius: 18px;
  padding: 14px 12px;
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.3);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.5), 0 20px 40px -18px rgba(0,0,0,.7);
}
.mock__dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,.8); margin-right: 5px; }
.mock__lines { margin-top: 12px; display: grid; gap: 7px; }
.mock__lines i { display: block; height: 6px; border-radius: 4px; background: rgba(255,255,255,.55); }

.mock--dash {
  width: 150px; height: 96px;
  border-radius: 16px;
  padding: 14px;
  display: flex;
  align-items: flex-end;
  background: rgba(255,255,255,.13);
  border: 1px solid rgba(255,255,255,.28);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.45), 0 20px 40px -18px rgba(0,0,0,.7);
}
.mock__chart { display: flex; align-items: flex-end; gap: 7px; width: 100%; height: 100%; }
.mock__chart i { flex: 1; height: var(--h); border-radius: 4px 4px 2px 2px; background: linear-gradient(180deg, rgba(255,255,255,.95), rgba(255,255,255,.35)); }

.mock--iot { width: 130px; height: 130px; display: grid; place-items: center; }
.mock--iot .ring { position: absolute; width: 100%; height: 100%; border-radius: 50%; border: 1px solid rgba(255,255,255,.35); }
.mock--iot .ring-2 { width: 66%; height: 66%; opacity: .7; }
.mock--iot .core {
  width: 34%; height: 34%;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 32%, #fff, rgba(255,255,255,.6));
  animation: corePulse 2.8s ease-in-out infinite;
}
@keyframes corePulse {
  0%,100% { transform: scale(1); box-shadow: 0 0 30px rgba(255,255,255,.6); }
  50%     { transform: scale(1.12); box-shadow: 0 0 46px rgba(255,255,255,.95); }
}

.mock--web {
  width: 160px; height: 104px;
  border-radius: 14px;
  padding: 10px;
  background: rgba(255,255,255,.13);
  border: 1px solid rgba(255,255,255,.28);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.45), 0 20px 40px -18px rgba(0,0,0,.7);
}
.mock__top { display: block; height: 8px; width: 42%; border-radius: 4px; background: rgba(255,255,255,.65); margin-bottom: 10px; }
.mock__cols { display: flex; gap: 8px; }
.mock__cols i { flex: 1; height: 62px; border-radius: 8px; background: linear-gradient(180deg, rgba(255,255,255,.5), rgba(255,255,255,.16)); }
.mock__cols i:nth-child(2) { height: 74px; margin-top: -12px; }

.mock--mini {
  width: 126px; height: 126px;
  border-radius: 20px;
  padding: 12px;
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.3);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.5), 0 20px 40px -18px rgba(0,0,0,.7);
}
.mini-top { display: block; height: 9px; width: 54%; border-radius: 5px; background: rgba(255,255,255,.7); margin-bottom: 11px; }
.mini-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.mini-grid i { height: 36px; border-radius: 9px; background: linear-gradient(150deg, rgba(255,255,255,.5), rgba(255,255,255,.14)); }

.mock--big { width: 170px; height: 120px; display: grid; place-items: center; }
.big-ring {
  position: absolute;
  width: 96px; height: 96px;
  border-radius: 50%;
  border: 8px solid rgba(255,255,255,.18);
  border-top-color: rgba(255,255,255,.85);
  border-right-color: rgba(255,255,255,.5);
  animation: spinOrb 6s linear infinite;
}
.big-bars {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 46px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 8px;
}
.big-bars i { width: 12px; height: var(--h); border-radius: 3px 3px 0 0; background: linear-gradient(180deg, rgba(255,255,255,.9), rgba(255,255,255,.25)); }

/* ------------------------------ 13. 流程 ------------------------------ */
.process { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 20px; }
.step { padding: 28px 26px 26px; }
.step__num {
  display: inline-block;
  font-family: var(--ff-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  padding: 5px 12px;
  border-radius: 9px;
  margin-bottom: 16px;
  color: var(--c-cyan);
  background: rgba(56,225,255,.1);
  border: 1px solid rgba(56,225,255,.24);
}
[data-theme="light"] .step__num { color: #0369a1; background: rgba(56,225,255,.16); border-color: rgba(56,225,255,.4); }
.step h3 { font-size: 18.5px; margin-bottom: 10px; }
.step p { font-size: 14.5px; color: var(--muted); line-height: 1.8; }
.step__out {
  display: inline-block;
  margin-top: 18px;
  font-size: 12.5px;
  color: var(--text-2);
  padding: 5px 13px;
  border-radius: 999px;
  background: rgba(255,255,255,.055);
  border: 1px solid var(--line);
}
[data-theme="light"] .step__out { background: rgba(255,255,255,.75); }

/* ------------------------------ 14. 为什么选我们 ------------------------------ */
.why {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
  gap: clamp(30px, 5vw, 64px);
  align-items: center;
}
.why__copy .sec-title { text-align: left; font-size: clamp(26px, 3.5vw, 42px); }
.why__copy .sec-desc { text-align: left; margin-bottom: 38px; }

.why__list { display: grid; gap: 20px; }
.why__list li { display: flex; gap: 15px; align-items: flex-start; }
.why__ico {
  flex: none;
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border-radius: 13px;
  color: var(--text);
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-brd);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  backdrop-filter: blur(14px) saturate(160%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.3);
}
.why__ico svg { width: 20px; height: 20px; color: var(--c-cyan); }
[data-theme="light"] .why__ico svg { color: #4d7cff; }
.why__list b { display: block; font-size: 16px; margin-bottom: 3px; }
.why__list p { font-size: 14px; color: var(--muted); line-height: 1.72; }

.why__panel { padding: 32px 30px; }
.why__panel-title { font-size: 17px; margin-bottom: 26px; }

.meter { margin-bottom: 21px; }
.meter__head { display: flex; justify-content: space-between; align-items: baseline; font-size: 14px; color: var(--text-2); margin-bottom: 9px; }
.meter__head b {
  font-size: 15.5px;
  font-variant-numeric: tabular-nums;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.meter__bar {
  height: 8px;
  border-radius: 999px;
  background: rgba(255,255,255,.09);
  overflow: hidden;
  box-shadow: inset 0 1px 2px rgba(0,0,0,.35);
}
[data-theme="light"] .meter__bar { background: rgba(20,32,80,.08); }
.meter__bar i {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: var(--grad-brand);
  box-shadow: 0 0 14px rgba(77,124,255,.75);
  transition: width 1.5s var(--ease);
}
.meter.is-in .meter__bar i { width: var(--w); }

.why__panel-foot {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--muted);
}
.dot-live { width: 7px; height: 7px; border-radius: 50%; background: #34d399; animation: pulseDot 2.4s ease-in-out infinite; }

/* ------------------------------ 15. 评价 ------------------------------ */
.quote { display: flex; flex-direction: column; gap: 16px; }
.quote__stars { color: #fbbf24; font-size: 14px; letter-spacing: 3px; }
.quote p { font-size: 15px; line-height: 1.9; color: var(--text-2); flex: 1; }
.quote footer { display: flex; align-items: center; gap: 13px; padding-top: 20px; border-top: 1px solid var(--line); }
.quote__ava {
  width: 42px; height: 42px; flex: none;
  display: grid; place-items: center;
  border-radius: 50%;
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.45), 0 8px 20px -8px rgba(0,0,0,.6);
}
.a-1 { background: linear-gradient(135deg, #38e1ff, #4d7cff); }
.a-2 { background: linear-gradient(135deg, #a855f7, #ff6ec7); }
.a-3 { background: linear-gradient(135deg, #34d399, #0ea5e9); }
.quote footer b { display: block; font-size: 14.5px; }
.quote footer em { font-size: 12.5px; color: var(--muted); }

/* ------------------------------ 16. 合作模式 ------------------------------ */
.plan { display: flex; flex-direction: column; padding: 34px 30px; }
.plan h3 { font-size: 21px; margin-bottom: 7px; }
.plan__sub { font-size: 13.5px; color: var(--muted); line-height: 1.7; min-height: 44px; }
.plan__price {
  margin: 22px 0 24px;
  padding: 18px 20px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,.05);
  border: 1px solid var(--line);
}
[data-theme="light"] .plan__price { background: rgba(255,255,255,.7); }
.plan__price b {
  display: block;
  font-size: 25px;
  letter-spacing: -.03em;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.plan__price em { font-size: 12.5px; color: var(--muted); }
.plan__feat { display: grid; gap: 12px; margin-bottom: 28px; flex: 1; }
.plan__feat li { position: relative; padding-left: 26px; font-size: 14.5px; color: var(--text-2); line-height: 1.6; }
.plan__feat li::before {
  content: "";
  position: absolute;
  left: 0; top: 7px;
  width: 15px; height: 15px;
  border-radius: 50%;
  background: var(--grad-soft);
  border: 1px solid rgba(56,225,255,.45);
}
.plan__feat li::after {
  content: "";
  position: absolute;
  left: 5px; top: 10px;
  width: 5px; height: 8px;
  border-right: 2px solid var(--c-cyan);
  border-bottom: 2px solid var(--c-cyan);
  transform: rotate(42deg);
}
[data-theme="light"] .plan__feat li::after { border-color: #4d7cff; }

.plan--hot {
  border-color: rgba(120,160,255,.42);
  box-shadow:
    0 2px 6px rgba(0,0,0,.3),
    0 26px 60px -18px rgba(77,124,255,.55),
    0 0 0 1px rgba(120,160,255,.16),
    var(--glass-inset);
}
.plan--hot:hover { transform: translateY(-10px); }
.plan__ribbon {
  position: absolute;
  top: 20px; right: 20px;
  padding: 5px 13px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 700;
  color: #fff;
  background: var(--grad-brand);
  box-shadow: 0 8px 22px -8px rgba(77,124,255,.95), inset 0 1px 0 rgba(255,255,255,.4);
  z-index: 4;
}

/* ------------------------------ 17. FAQ ------------------------------ */
.faq { display: grid; gap: 12px; }
.faq__item { border-radius: var(--radius-sm); overflow: hidden; transition: border-color .35s; }
.faq__item[open] { border-color: var(--glass-brd-hi); }
.faq__item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 21px 24px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  position: relative;
  z-index: 3;
  transition: color .3s;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary:hover { color: var(--c-cyan); }
[data-theme="light"] .faq__item summary:hover { color: var(--c-blue); }

.faq__ico {
  position: relative;
  width: 22px; height: 22px; flex: none;
  border-radius: 50%;
  border: 1px solid var(--glass-brd);
  background: rgba(255,255,255,.07);
  transition: transform .4s var(--ease), background .3s;
}
.faq__ico::before, .faq__ico::after {
  content: "";
  position: absolute;
  left: 50%; top: 50%;
  background: currentColor;
  border-radius: 2px;
  transform: translate(-50%,-50%);
  transition: opacity .3s, transform .4s var(--ease);
}
.faq__ico::before { width: 9px; height: 1.6px; }
.faq__ico::after  { width: 1.6px; height: 9px; }
.faq__item[open] .faq__ico { background: var(--grad-brand); border-color: transparent; transform: rotate(180deg); color: #fff; }
.faq__item[open] .faq__ico::after { opacity: 0; }

.faq__body { padding: 0 24px 24px; position: relative; z-index: 3; }
.faq__body p { font-size: 14.5px; line-height: 1.9; color: var(--muted); }
.faq__item[open] .faq__body { animation: fadeUp .4s var(--ease); }

/* ------------------------------ 18. CTA / 联系表单 ------------------------------ */
.cta {
  position: relative;
  border-radius: var(--radius-lg);
  padding: clamp(34px, 5vw, 60px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 460px);
  gap: clamp(30px, 5vw, 60px);
  overflow: hidden;
}
.cta__glow {
  position: absolute;
  top: -40%; right: -12%;
  width: 620px; height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(77,124,255,.34), rgba(168,85,247,.2) 45%, transparent 70%);
  filter: blur(52px);
  pointer-events: none;
  z-index: 0;
}
.cta__left { position: relative; z-index: 3; }
.cta h2 { font-size: clamp(27px, 3.4vw, 40px); margin: 14px 0 16px; letter-spacing: -.035em; }
.cta__left > p { font-size: 15.5px; line-height: 1.9; color: var(--muted); max-width: 460px; }
.cta__left > p b { color: var(--text); }

.cta__points { display: grid; gap: 12px; margin: 30px 0 34px; }
.cta__points li { display: flex; align-items: center; gap: 11px; font-size: 14.5px; color: var(--text-2); }
.cta__points i {
  position: relative;
  width: 18px; height: 18px; flex: none;
  border-radius: 50%;
  background: rgba(56,225,255,.14);
  border: 1px solid rgba(56,225,255,.4);
}
.cta__points i::after {
  content: "";
  position: absolute;
  left: 5px; top: 4px;
  width: 5px; height: 8px;
  border-right: 2px solid var(--c-cyan);
  border-bottom: 2px solid var(--c-cyan);
  transform: rotate(42deg);
}
[data-theme="light"] .cta__points i::after { border-color: #4d7cff; }

.cta__contacts { display: grid; gap: 12px; }
.contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 18px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,.05);
  border: 1px solid var(--line);
  transition: all .35s var(--ease);
}
[data-theme="light"] .contact-item { background: rgba(255,255,255,.72); }
.contact-item:hover { transform: translateX(4px); border-color: var(--glass-brd-hi); background: rgba(255,255,255,.09); }
[data-theme="light"] .contact-item:hover { background: #fff; }
.contact-item__ico {
  width: 40px; height: 40px; flex: none;
  display: grid; place-items: center;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(135deg, rgba(56,225,255,.9), rgba(77,124,255,.9) 55%, rgba(168,85,247,.9));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.45), 0 10px 24px -10px rgba(77,124,255,.9);
}
.contact-item__ico svg { width: 19px; height: 19px; }
.contact-item em { display: block; font-size: 12px; color: var(--muted); }
.contact-item b { font-size: 15.5px; letter-spacing: -.01em; }

.cta__form {
  position: relative;
  z-index: 3;
  display: grid;
  gap: 16px;
  padding: 26px;
  border-radius: var(--radius);
  background: rgba(255,255,255,.055);
  border: 1px solid var(--glass-brd);
  -webkit-backdrop-filter: blur(18px) saturate(170%);
  backdrop-filter: blur(18px) saturate(170%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.28), 0 20px 50px -24px rgba(0,0,0,.7);
}
[data-theme="light"] .cta__form { background: rgba(255,255,255,.72); box-shadow: inset 0 1px 0 #fff, 0 20px 50px -26px rgba(28,42,96,.3); }

.field { display: grid; gap: 8px; }
.field label { font-size: 13.5px; font-weight: 600; color: var(--text-2); }
.field label span { color: var(--c-pink); }

.field input, .field select, .field textarea {
  width: 100%;
  padding: 13px 16px;
  border-radius: 13px;
  font-size: 14.5px;
  color: var(--text);
  background: rgba(255,255,255,.05);
  border: 1px solid var(--line);
  outline: none;
  transition: border-color .3s, background .3s, box-shadow .3s;
  -webkit-appearance: none;
  appearance: none;
}
[data-theme="light"] .field input,
[data-theme="light"] .field select,
[data-theme="light"] .field textarea { background: rgba(255,255,255,.85); }

.field input::placeholder, .field textarea::placeholder { color: var(--muted); opacity: .72; }

.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238b97bb' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 17px;
  padding-right: 42px;
  cursor: pointer;
}
.field select option { background: var(--bg-soft); color: var(--text); }

.field input:focus, .field select:focus, .field textarea:focus {
  border-color: rgba(120,160,255,.68);
  background: rgba(255,255,255,.085);
  box-shadow: 0 0 0 4px rgba(77,124,255,.16);
}
[data-theme="light"] .field input:focus,
[data-theme="light"] .field select:focus,
[data-theme="light"] .field textarea:focus { background: #fff; }

.field textarea { resize: vertical; min-height: 84px; line-height: 1.65; }
.field.has-error input { border-color: rgba(255,110,140,.85); }

.form__note { display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--muted); justify-content: center; }
.form__note svg { width: 15px; height: 15px; flex: none; color: var(--c-cyan); }

/* ------------------------------ 19. 页脚 ------------------------------ */
.footer {
  position: relative;
  margin-top: 60px;
  padding-top: 68px;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, transparent, rgba(255,255,255,.022));
}
[data-theme="light"] .footer { background: linear-gradient(180deg, transparent, rgba(255,255,255,.6)); }

.footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
  gap: 40px;
  padding-bottom: 54px;
}
.footer__brand p { font-size: 14px; line-height: 1.85; color: var(--muted); margin: 20px 0 22px; max-width: 340px; }
.footer__social { display: flex; gap: 10px; }
.footer__social a {
  padding: 8px 17px;
  border-radius: 11px;
  font-size: 13px;
  color: var(--text-2);
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-brd);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  transition: all .3s var(--ease);
}
.footer__social a:hover { color: var(--text); border-color: var(--glass-brd-hi); transform: translateY(-2px); }

.footer__col h4 { font-size: 14.5px; margin-bottom: 18px; letter-spacing: .02em; }
.footer__col a, .footer__col span { display: block; font-size: 13.5px; color: var(--muted); padding: 6px 0; transition: color .3s, transform .3s var(--ease); }
.footer__col a:hover { color: var(--text); transform: translateX(3px); }

.footer__contact p { padding: 6px 0; }
.footer__contact em { display: block; font-size: 12px; color: var(--muted); opacity: .8; }
.footer__contact a, .footer__contact span { padding: 0; font-size: 14px; color: var(--text-2); }
.footer__contact a:hover { transform: none; color: var(--c-cyan); }
[data-theme="light"] .footer__contact a:hover { color: var(--c-blue); }

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 22px 26px 30px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
}
.footer__meta { display: flex; align-items: center; gap: 10px; }
.footer__meta a { transition: color .3s; }
.footer__meta a:hover { color: var(--text); }

/* ------------------------------ 20. 浮动控件 ------------------------------ */
.to-top {
  position: fixed;
  right: 24px; bottom: 24px;
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border-radius: 15px;
  color: var(--text);
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-brd);
  -webkit-backdrop-filter: blur(18px) saturate(170%);
  backdrop-filter: blur(18px) saturate(170%);
  box-shadow: 0 12px 32px -14px rgba(0,0,0,.7), inset 0 1px 0 rgba(255,255,255,.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px) scale(.9);
  transition: all .45s var(--ease);
  z-index: 140;
}
.to-top svg { width: 19px; height: 19px; }
.to-top.is-on { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { border-color: var(--glass-brd-hi); transform: translateY(-3px); }

.cursor-glow {
  position: fixed;
  top: 0; left: 0;
  width: 460px; height: 460px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 1;
  opacity: 0;
  background: radial-gradient(circle, rgba(77,124,255,.12), transparent 62%);
  transition: opacity .6s var(--ease);
  mix-blend-mode: screen;
  will-change: transform;
}
[data-theme="light"] .cursor-glow {
  background: radial-gradient(circle, rgba(77,124,255,.16), transparent 62%);
  mix-blend-mode: multiply;
}
.cursor-glow.is-on { opacity: 1; }

.toast-pop {
  position: fixed;
  left: 50%; bottom: 34px;
  transform: translate(-50%, 130%);
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 26px 15px 16px;
  border-radius: 20px;
  z-index: 210;
  transition: transform .6s var(--ease), opacity .4s;
  opacity: 0;
}
.toast-pop.is-show { transform: translate(-50%, 0); opacity: 1; }
.toast-pop__ico {
  width: 40px; height: 40px; flex: none;
  display: grid; place-items: center;
  border-radius: 13px;
  color: #fff;
  background: linear-gradient(135deg, #34d399, #10b981);
  box-shadow: 0 10px 26px -10px rgba(16,185,129,.95), inset 0 1px 0 rgba(255,255,255,.5);
}
.toast-pop__ico svg { width: 20px; height: 20px; }
.toast-pop b { display: block; font-size: 15px; }
.toast-pop small { font-size: 12.5px; color: var(--muted); }

/* ------------------------------ 21. 入场动画 ------------------------------ */
[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .85s var(--ease), transform .85s var(--ease);
  transition-delay: var(--rd, 0ms);
}
[data-reveal].is-in { opacity: 1; transform: none; }

.tilt { transform-style: preserve-3d; }

/* ------------------------------ 22. 响应式 ------------------------------ */
@media (max-width: 1080px) {
  .hero__inner { grid-template-columns: 1fr; gap: 56px; }
  .hero { min-height: auto; padding-bottom: 110px; }
  .hero__stage { min-height: 540px; max-width: 560px; margin-inline: auto; width: 100%; }
  .why { grid-template-columns: 1fr; }
  .cta { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .nav__links {
    position: fixed;
    top: calc(var(--nav-h) + 26px);
    left: 22px; right: 22px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 16px;
    border-radius: 22px;
    background: linear-gradient(150deg, rgba(16,21,44,.94), rgba(8,11,26,.96));
    border: 1px solid rgba(255,255,255,.16);
    -webkit-backdrop-filter: blur(26px) saturate(180%);
    backdrop-filter: blur(26px) saturate(180%);
    box-shadow: 0 30px 70px -26px rgba(0,0,0,.85), inset 0 1px 0 rgba(255,255,255,.22);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-14px) scale(.98);
    transition: all .4s var(--ease);
    margin-left: 0;
  }
  [data-theme="light"] .nav__links {
    background: linear-gradient(150deg, rgba(255,255,255,.97), rgba(240,244,253,.98));
    border-color: rgba(255,255,255,.9);
    box-shadow: 0 30px 70px -26px rgba(28,42,96,.35), inset 0 1px 0 #fff;
  }
  .nav__links.is-open { opacity: 1; visibility: visible; transform: none; }
  .nav__links a { padding: 14px 16px; font-size: 15.5px; border-radius: 14px; color: var(--text); }
  .nav__links a::after { display: none; }
  .nav__burger { display: block; }
  .nav__cta { display: none; }

  .grid--3 { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .process { grid-template-columns: repeat(2, minmax(0,1fr)); }
}

@media (max-width: 640px) {
  :root { --radius: 22px; --radius-lg: 28px; --nav-h: 68px; }
  .container { padding-inline: 18px; }
  .grid--3 { grid-template-columns: 1fr; }
  .process { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; gap: 32px; }

  .hero { padding-top: calc(var(--nav-h) + 48px); }
  .hero__stats { grid-template-columns: repeat(2, minmax(0,1fr)); gap: 18px 8px; }
  .hero__actions .btn { flex: 1 1 100%; }

  .hero__stage { min-height: 480px; }
  .phone { width: 216px; left: 40%; top: 56%; }
  .codecard { width: 208px; right: 0; top: -2%; padding: 12px 13px 14px; }
  .codecard__head em { font-size: 9px; }
  .codecard__body { font-size: 9.5px; line-height: 1.75; }
  .toast { left: 0; bottom: 2%; padding: 11px 14px 11px 11px; gap: 9px; }
  .toast strong { font-size: 12px; }
  .toast small { font-size: 10px; }
  .float-chip { font-size: 11px; padding: 5px 11px; }
  .fc-2, .fc-4, .fc-6 { display: none; }

  .case__visual { height: 158px; }
  .cta { padding: 26px 20px; }
  .cta__form { padding: 20px; }
  .to-top { right: 16px; bottom: 16px; width: 42px; height: 42px; }
  .toast-pop { left: 16px; right: 16px; transform: translate(0, 130%); width: auto; padding-right: 18px; }
  .toast-pop.is-show { transform: none; }
  .footer__bottom { padding-inline: 18px; }
}

/* ------------------------------ 23. 无障碍 / 降级 ------------------------------ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .aurora-blob { animation: none; }
}

@media (hover: none) {
  .cursor-glow { display: none; }
  .glass::before { display: none; }
}

@media print {
  .aurora-bg, .nav, .to-top, .cursor-glow, .toast-pop, .scroll-progress { display: none !important; }
  body { background: #fff; color: #000; }
  .glass { box-shadow: none; border: 1px solid #ddd; background: #fff; }
}