/* =========================================================
   幅图快快 · 官网主页
   设计风格：暗色 / 极光渐变 / 玻璃拟态 / Bento 网格
   适配：桌面 ≥1080px、平板 768–1079px、手机 <768px
   ========================================================= */

:root {
  --bg: #07070b;
  --bg-2: #0b0b13;
  --ink: #f4f5f8;
  --ink-2: #b9bac9;
  --muted: #87889b;
  --line: rgba(255, 255, 255, 0.09);
  --line-2: rgba(255, 255, 255, 0.16);
  --lime: #d6ff4b;
  --violet: #7c5cff;
  --coral: #ff7a4f;
  --cyan: #4be1ff;
  --card: rgba(255, 255, 255, 0.035);
  --card-2: rgba(255, 255, 255, 0.06);
  --radius: 24px;
  --radius-sm: 14px;
  --wrap: 1200px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Noto Sans SC",
    "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  letter-spacing: 0.01em;
}

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

h1, h2, h3 { margin: 0; line-height: 1.12; letter-spacing: -0.02em; font-weight: 700; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

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

.ico {
  width: 1.05em;
  height: 1.05em;
  flex: none;
  fill: none;
}

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 48px);
}
.wrap--narrow { max-width: 860px; }

/* ---------- 滚动进度 ---------- */
.scroll-progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 2px;
  z-index: 120;
  background: rgba(255, 255, 255, 0.05);
}
.scroll-progress span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--lime), var(--cyan) 45%, var(--violet));
}

/* ---------- 导航栏 ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 110;
  transition: background 0.35s var(--ease), backdrop-filter 0.35s var(--ease),
    border-color 0.35s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-stuck {
  background: rgba(7, 7, 11, 0.72);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom-color: var(--line);
}
.nav__inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 14px clamp(20px, 4vw, 48px);
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 10px; flex: none; }
.brand__mark svg { width: 34px; height: 34px; display: block; border-radius: 10px; }
.brand__text {
  display: flex;
  flex-direction: column;
  font-weight: 700;
  font-size: 17px;
  line-height: 1.1;
}
.brand__text em {
  font-style: normal;
  font-size: 9px;
  letter-spacing: 0.34em;
  color: var(--muted);
  font-weight: 500;
}

.nav__links {
  display: flex;
  gap: 4px;
  margin-left: auto;
}
.nav__links a {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 14.5px;
  color: var(--ink-2);
  transition: color 0.25s, background 0.25s;
}
.nav__links a:hover { color: #fff; background: rgba(255, 255, 255, 0.07); }

.nav__actions { display: flex; align-items: center; gap: 10px; }

.nav__burger {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line-2);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  cursor: pointer;
  padding: 0;
  place-items: center;
  gap: 5px;
  flex-direction: column;
}
.nav__burger span {
  display: block;
  width: 16px;
  height: 1.6px;
  background: var(--ink);
  transition: transform 0.3s var(--ease), opacity 0.3s;
}
.nav__burger.is-open span:nth-child(1) { transform: translateY(3.3px) rotate(45deg); }
.nav__burger.is-open span:nth-child(2) { transform: translateY(-3.3px) rotate(-45deg); }

/* ---------- 按钮 ---------- */
.btn {
  --bg-btn: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: var(--bg-btn);
  font-size: 14.5px;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease),
    background 0.25s, border-color 0.25s, color 0.25s;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary {
  background: var(--lime);
  color: #0a0a0f;
  box-shadow: 0 8px 30px -12px rgba(214, 255, 75, 0.7);
}
.btn--primary:hover { box-shadow: 0 16px 40px -14px rgba(214, 255, 75, 0.85); }
.btn--glass {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--line-2);
  color: var(--ink);
  backdrop-filter: blur(10px);
}
.btn--glass:hover { background: rgba(255, 255, 255, 0.12); }
.btn--ghost { color: var(--ink-2); border-color: var(--line); }
.btn--ghost:hover { color: #fff; border-color: var(--line-2); }
.btn--lg { padding: 15px 26px; font-size: 15.5px; }
.btn--block { width: 100%; }

/* ---------- 移动端菜单 ---------- */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 105;
  background: rgba(7, 7, 11, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 110px 28px 40px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  overflow-y: auto;
}
.mobile-menu[hidden] { display: none; }
.mobile-menu nav { display: flex; flex-direction: column; }
.mobile-menu a {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 4px;
  border-bottom: 1px solid var(--line);
  font-size: 22px;
  font-weight: 600;
}
.mobile-menu a span {
  font-size: 12px;
  color: var(--lime);
  letter-spacing: 0.1em;
  font-weight: 500;
}
.mobile-menu .btn { margin-top: 24px; }

/* ---------- 背景光效 ---------- */
.aurora {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
.aurora__blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.5;
  animation: float 22s var(--ease) infinite alternate;
}
.aurora__blob--a {
  width: 46vw; height: 46vw;
  top: -14vw; left: -8vw;
  background: radial-gradient(circle, #7c5cff 0%, transparent 68%);
}
.aurora__blob--b {
  width: 40vw; height: 40vw;
  top: 12vw; right: -10vw;
  background: radial-gradient(circle, #ff7a4f 0%, transparent 66%);
  opacity: 0.34;
  animation-duration: 27s;
}
.aurora__blob--c {
  width: 38vw; height: 38vw;
  top: 62vw; left: 24vw;
  background: radial-gradient(circle, #4be1ff 0%, transparent 66%);
  opacity: 0.22;
  animation-duration: 32s;
}
.aurora__grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 20%, transparent 78%);
}
@keyframes float {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(4vw, 6vw, 0) scale(1.14); }
}

main { position: relative; z-index: 1; }

/* ---------- 通用小组件 ---------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 15px 7px 12px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  font-size: 12.5px;
  color: var(--ink-2);
  backdrop-filter: blur(8px);
}
.pill__dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 4px rgba(214, 255, 75, 0.18);
  animation: blink 1.8s infinite;
}
@keyframes blink { 50% { opacity: 0.35; } }

.grad {
  background: linear-gradient(100deg, var(--lime), var(--cyan) 40%, var(--violet) 75%, var(--coral));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--lime);
  margin-bottom: 18px;
}
.eyebrow .ico { width: 14px; height: 14px; }

.section { padding: clamp(72px, 10vw, 132px) 0; position: relative; }
.section--alt::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.022) 12%, rgba(255, 255, 255, 0.022) 88%, transparent);
  pointer-events: none;
}

.sec-head { max-width: 720px; margin-bottom: clamp(36px, 5vw, 60px); }
.sec-title { font-size: clamp(30px, 5.2vw, 56px); }
.sec-desc { margin-top: 18px; color: var(--ink-2); font-size: clamp(15px, 1.6vw, 17px); }

/* ---------- 卡片基础 + 光斑 ---------- */
[data-spot] { position: relative; overflow: hidden; }
[data-spot]::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s;
  background: radial-gradient(340px circle at var(--mx, 50%) var(--my, 50%),
    rgba(255, 255, 255, 0.10), transparent 65%);
}
[data-spot]:hover::after { opacity: 1; }

/* ---------- HERO ---------- */
.hero { padding: clamp(120px, 16vh, 180px) 0 0; }
.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}
.hero__title {
  margin: 24px 0 22px;
  font-size: clamp(38px, 7.2vw, 82px);
  font-weight: 800;
  letter-spacing: -0.035em;
}
.hero__desc {
  color: var(--ink-2);
  font-size: clamp(15px, 1.7vw, 18px);
  max-width: 560px;
}
.hero__desc strong { color: #fff; }
.hero__desc b { color: var(--lime); font-weight: 600; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin: 34px 0 44px; }

.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}
.hero__stats li { display: flex; flex-direction: column; gap: 2px; }
.hero__stats b {
  font-size: clamp(24px, 3.2vw, 36px);
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(180deg, #fff, #9aa0b5);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__stats span { font-size: 12.5px; color: var(--muted); }

/* 手机模型 */
.hero__visual { position: relative; display: flex; justify-content: center; }
.phone {
  position: relative;
  width: clamp(250px, 24vw, 306px);
  aspect-ratio: 9 / 19;
  border-radius: 44px;
  padding: 11px;
  background: linear-gradient(160deg, #2a2b38, #101018 60%);
  box-shadow: 0 40px 90px -30px rgba(0, 0, 0, 0.9),
    0 0 0 1px rgba(255, 255, 255, 0.08) inset;
  transform: rotate(-3deg);
  transition: transform 0.6s var(--ease);
}
.phone__screen {
  height: 100%;
  border-radius: 34px;
  background: linear-gradient(180deg, #16161f, #0c0c12);
  padding: 16px 13px;
  display: flex;
  flex-direction: column;
  gap: 11px;
  overflow: hidden;
}
.phone__glow {
  position: absolute;
  inset: -30% -20%;
  background: radial-gradient(circle at 50% 0%, rgba(124, 92, 255, 0.5), transparent 60%);
  filter: blur(40px);
  z-index: -1;
}
.mp-top { display: flex; justify-content: space-between; align-items: center; }
.mp-top__title { font-size: 14px; font-weight: 700; }
.mp-top__cap {
  font-size: 10px;
  color: var(--lime);
  border: 1px solid rgba(214, 255, 75, 0.35);
  border-radius: 999px;
  padding: 2px 8px;
}
.mp-banner {
  border-radius: 14px;
  padding: 12px 13px;
  background: linear-gradient(120deg, rgba(124, 92, 255, 0.55), rgba(255, 122, 79, 0.42));
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.mp-banner span { font-size: 9.5px; opacity: 0.8; letter-spacing: 0.14em; }
.mp-banner b { font-size: 13.5px; }
.mp-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 7px; }
.mp-cell {
  aspect-ratio: 1;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  transition: transform 0.3s var(--ease), background 0.3s;
}
.mp-cell:hover { transform: translateY(-2px); background: rgba(255, 255, 255, 0.1); }
.mp-cell i { font-style: normal; font-size: 10.5px; font-weight: 600; }
.mp-cell .t1 { color: var(--lime); }
.mp-cell .t2 { color: var(--cyan); }
.mp-cell .t3 { color: var(--violet); }
.mp-cell .t4 { color: var(--coral); }
.mp-cell .t5 { color: #ffd166; }
.mp-cell .t6 { color: #8be9fd; }
.mp-cell .t7 { color: #ff9ecd; }
.mp-cell .t8 { color: #a0e77a; }
.mp-cell .t9 { color: #c0b3ff; }
.mp-bar {
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 11px 14px;
  border-radius: 14px;
  background: var(--lime);
  color: #0a0a0f;
  font-size: 12.5px;
  font-weight: 700;
}
.mp-bar em { font-style: normal; font-weight: 500; opacity: 0.65; font-size: 10.5px; }

/* 浮动卡片 */
.float-card {
  position: absolute;
  border-radius: 18px;
  border: 1px solid var(--line-2);
  background: rgba(18, 18, 26, 0.78);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 24px 60px -24px rgba(0, 0, 0, 0.9);
  animation: bob 7s ease-in-out infinite;
}
.float-card--img { width: clamp(150px, 15vw, 196px); left: -3%; bottom: 8%; padding: 7px; }
.float-card--img img { border-radius: 12px; aspect-ratio: 4 / 3; object-fit: cover; }
.float-card--img figcaption {
  font-size: 10.5px;
  color: var(--ink-2);
  padding: 7px 4px 3px;
  text-align: center;
}
.float-card--3d, .float-card--credit {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  right: -4%;
  animation-delay: -2s;
}
.float-card--3d { top: 16%; }
.float-card--credit { top: 52%; animation-delay: -4s; }
.float-card--3d .ico, .float-card--credit .ico { width: 18px; height: 18px; color: var(--lime); }
.float-card--3d b, .float-card--credit b { display: block; font-size: 12.5px; }
.float-card--3d span, .float-card--credit span { font-size: 10.5px; color: var(--muted); }
@keyframes bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* 跑马灯 */
.marquee {
  margin-top: clamp(56px, 8vw, 96px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  padding: 16px 0;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee__track {
  display: flex;
  gap: 26px;
  width: max-content;
  animation: slide 34s linear infinite;
  font-size: clamp(15px, 2vw, 22px);
  font-weight: 600;
  color: rgba(255, 255, 255, 0.34);
  white-space: nowrap;
}
.marquee__track i { color: var(--lime); font-style: normal; }
@keyframes slide { to { transform: translateX(-50%); } }

/* ---------- Bento 价值 ---------- */
.bento {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.bento__card {
  position: relative;
  grid-column: span 1;
  padding: clamp(24px, 3vw, 34px);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--card);
  transition: transform 0.4s var(--ease), border-color 0.4s, background 0.4s;
}
.bento__card--wide { grid-column: span 2; }
.bento__card:hover {
  transform: translateY(-4px);
  border-color: var(--line-2);
  background: var(--card-2);
}
.bento__ico {
  width: 42px; height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(214, 255, 75, 0.1);
  border: 1px solid rgba(214, 255, 75, 0.2);
  color: var(--lime);
  margin-bottom: 18px;
}
.bento__ico .ico { width: 20px; height: 20px; }
.bento__card h3 { font-size: clamp(18px, 2vw, 22px); margin-bottom: 10px; }
.bento__card p { color: var(--ink-2); font-size: 15px; }
.bento__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.bento__tags span {
  font-size: 11.5px;
  padding: 5px 11px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  color: var(--ink-2);
  background: rgba(255, 255, 255, 0.03);
}

/* ---------- 功能矩阵 ---------- */
.fx { display: grid; grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr); gap: 20px; }
.fx__list { display: flex; flex-direction: column; gap: 8px; }
.fx__item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 15px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: transparent;
  cursor: pointer;
  text-align: left;
  transition: background 0.3s, border-color 0.3s, transform 0.3s var(--ease);
}
.fx__item:hover { background: rgba(255, 255, 255, 0.04); transform: translateX(3px); }
.fx__item.is-active {
  background: linear-gradient(100deg, rgba(214, 255, 75, 0.14), rgba(124, 92, 255, 0.12));
  border-color: rgba(214, 255, 75, 0.4);
}
.fx__num { font-size: 12px; color: var(--muted); letter-spacing: 0.1em; }
.fx__item.is-active .fx__num { color: var(--lime); }
.fx__name { font-size: 16px; font-weight: 600; }
.fx__cost { font-size: 12px; color: var(--ink-2); }

.fx__panel {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--card);
  overflow: hidden;
}
.fx__panel-media { position: relative; }
.fx__panel-media img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.fx__badge {
  position: absolute;
  left: 16px; top: 16px;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 13px;
  border-radius: 999px;
  background: rgba(7, 7, 11, 0.7);
  border: 1px solid var(--line-2);
  backdrop-filter: blur(8px);
  color: var(--lime);
}
.fx__panel-body { padding: clamp(22px, 3vw, 32px); }
.fx__panel-body h3 { font-size: clamp(20px, 2.6vw, 28px); margin-bottom: 12px; }
.fx__panel-body > p { color: var(--ink-2); font-size: 15px; }
.fx__steps { margin-top: 18px; display: grid; gap: 10px; counter-reset: s; }
.fx__steps li {
  position: relative;
  padding-left: 30px;
  font-size: 14.5px;
  color: var(--ink-2);
  counter-increment: s;
}
.fx__steps li::before {
  content: counter(s);
  position: absolute;
  left: 0; top: 3px;
  width: 20px; height: 20px;
  border-radius: 6px;
  display: grid;
  place-items: center;
  font-size: 11px;
  font-weight: 700;
  color: var(--lime);
  background: rgba(214, 255, 75, 0.12);
  border: 1px solid rgba(214, 255, 75, 0.28);
}
.fx__meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.fx__meta span {
  font-size: 12px;
  padding: 5px 11px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  color: var(--muted);
}

.fx__cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 20px;
}
.mini-card {
  padding: 22px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--card);
  transition: transform 0.35s var(--ease), border-color 0.35s;
}
.mini-card:hover { transform: translateY(-3px); border-color: var(--line-2); }
.mini-card b { display: block; font-size: 15.5px; margin-bottom: 8px; }
.mini-card p { font-size: 13.5px; color: var(--muted); line-height: 1.65; }

/* ---------- 3D 区块 ---------- */
.three-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
}
.tick { display: grid; gap: 16px; margin: 28px 0 32px; }
.tick li { display: flex; gap: 12px; }
.tick .ico {
  width: 22px; height: 22px;
  flex: none;
  margin-top: 3px;
  padding: 4px;
  border-radius: 7px;
  color: var(--lime);
  background: rgba(214, 255, 75, 0.12);
  box-sizing: content-box;
}
.tick b { display: block; font-size: 15.5px; }
.tick span { font-size: 14px; color: var(--muted); }

.three-stage {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line-2);
  box-shadow: 0 40px 90px -40px rgba(0, 0, 0, 0.9);
}
.three-stage img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.three-stage::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(7, 7, 11, 0.85));
}
.three-stage__hud {
  position: absolute;
  left: clamp(16px, 3vw, 26px);
  bottom: clamp(16px, 3vw, 26px);
  z-index: 2;
  display: grid;
  gap: 9px;
  width: min(280px, 62%);
}
.hud-row { display: grid; grid-template-columns: 58px 1fr; align-items: center; gap: 10px; }
.hud-row i { font-style: normal; font-size: 11px; color: var(--ink-2); }
.bar { height: 5px; border-radius: 999px; background: rgba(255, 255, 255, 0.16); overflow: hidden; }
.bar em {
  display: block;
  height: 100%;
  width: calc(var(--v) * 100%);
  border-radius: 999px;
  background: linear-gradient(90deg, var(--lime), var(--cyan));
  animation: hud 4s ease-in-out infinite alternate;
}
@keyframes hud { to { filter: hue-rotate(-40deg); } }
.three-stage__tag {
  position: absolute;
  right: 16px; top: 16px;
  z-index: 2;
  font-size: 11.5px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(7, 7, 11, 0.65);
  border: 1px solid var(--line-2);
  backdrop-filter: blur(8px);
}
.three-stage__axis {
  position: absolute;
  right: 22px; bottom: 22px;
  z-index: 2;
  width: 54px; height: 54px;
}
.ax { position: absolute; background: currentColor; border-radius: 2px; }
.ax--x { width: 30px; height: 2px; left: 0; top: 26px; color: #ff5f6d; }
.ax--y { width: 2px; height: 30px; left: 0; top: 0; color: #7cff6b; }
.ax--z { width: 22px; height: 2px; left: 0; top: 16px; color: #4bb8ff; transform: rotate(-45deg); transform-origin: left center; }

/* ---------- 前后对比 ---------- */
.compare {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line-2);
  --p: 50%;
  aspect-ratio: 16 / 9;
  user-select: none;
  touch-action: pan-y;
}
.compare__after { width: 100%; height: 100%; object-fit: cover; }
.compare__before {
  position: absolute;
  inset: 0;
  clip-path: inset(0 calc(100% - var(--p)) 0 0);
}
.compare__before img { width: 100%; height: 100%; object-fit: cover; }
.compare__tag {
  position: absolute;
  top: 16px;
  font-size: 11.5px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(7, 7, 11, 0.62);
  border: 1px solid var(--line-2);
  backdrop-filter: blur(8px);
  z-index: 3;
}
.compare__tag--l { left: 16px; color: var(--muted); }
.compare__tag--r { right: 16px; color: var(--lime); }
.compare__handle {
  position: absolute;
  top: 0; bottom: 0;
  left: var(--p);
  width: 42px;
  transform: translateX(-50%);
  border: 0;
  background: transparent;
  cursor: ew-resize;
  z-index: 4;
  display: grid;
  place-items: center;
  pointer-events: none;
}
.compare__handle::before {
  content: "";
  position: absolute;
  top: 0; bottom: 0; left: 50%;
  width: 2px;
  transform: translateX(-50%);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.6);
}
.compare__handle svg {
  position: relative;
  width: 42px; height: 42px;
  padding: 10px;
  box-sizing: border-box;
  border-radius: 50%;
  background: #fff;
  color: #0a0a0f;
  box-shadow: 0 10px 30px -8px rgba(0, 0, 0, 0.8);
}
.compare__range {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: ew-resize;
  z-index: 5;
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
}

/* ---------- 流程 ---------- */
.flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  counter-reset: f;
}
.flow li {
  position: relative;
  padding: 30px 24px 28px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--card);
  transition: transform 0.35s var(--ease), border-color 0.35s;
}
.flow li:hover { transform: translateY(-4px); border-color: var(--line-2); }
.flow li + li::before {
  content: "";
  position: absolute;
  left: -18px; top: 50%;
  width: 18px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-2));
}
.flow__num {
  display: block;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--lime);
  margin-bottom: 14px;
}
.flow h3 { font-size: 19px; margin-bottom: 10px; }
.flow p { font-size: 14.5px; color: var(--ink-2); }

/* ---------- 场景 ---------- */
.cases { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.case {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--card);
  overflow: hidden;
  transition: transform 0.4s var(--ease), border-color 0.4s;
}
.case:hover { transform: translateY(-5px); border-color: var(--line-2); }
.case img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
.case__body { padding: 20px 22px 24px; }
.case__body h3 { font-size: 18px; margin-bottom: 10px; }
.case__body p { font-size: 14px; color: var(--ink-2); line-height: 1.75; }
.case__body b { color: #fff; font-weight: 600; }

/* ---------- 价格 ---------- */
.plans { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.plan {
  position: relative;
  padding: clamp(24px, 3vw, 34px);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--card);
  display: flex;
  flex-direction: column;
  transition: transform 0.4s var(--ease), border-color 0.4s;
}
.plan:hover { transform: translateY(-5px); border-color: var(--line-2); }
.plan--hot {
  background: linear-gradient(180deg, rgba(214, 255, 75, 0.09), rgba(255, 255, 255, 0.03));
  border-color: rgba(214, 255, 75, 0.35);
}
.plan__flag {
  position: absolute;
  top: -12px; left: 26px;
  font-size: 11.5px;
  font-weight: 600;
  padding: 5px 13px;
  border-radius: 999px;
  background: var(--lime);
  color: #0a0a0f;
}
.plan h3 { font-size: 18px; color: var(--ink-2); font-weight: 600; }
.plan__price { display: flex; align-items: baseline; gap: 10px; margin: 12px 0 22px; }
.plan__price b { font-size: clamp(32px, 4.4vw, 44px); font-weight: 800; letter-spacing: -0.03em; }
.plan__price span { font-size: 13.5px; color: var(--muted); }
.plan ul { display: grid; gap: 12px; margin-bottom: 26px; }
.plan li { display: flex; gap: 10px; font-size: 14.5px; color: var(--ink-2); }
.plan .ico { width: 18px; height: 18px; color: var(--lime); flex: none; margin-top: 3px; }
.plan .btn { margin-top: auto; }
.price-note { margin-top: 26px; font-size: 13px; color: var(--muted); }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 12px; }
.faq__item {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--card);
  overflow: hidden;
  transition: border-color 0.3s, background 0.3s;
}
.faq__item:hover { border-color: var(--line-2); }
.faq__item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 16px;
  font-weight: 600;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary .ico {
  width: 22px; height: 22px;
  color: var(--lime);
  transition: transform 0.35s var(--ease);
  flex: none;
}
.faq__item[open] summary .ico { transform: rotate(45deg); }
.faq__body {
  padding: 0 22px 22px;
  font-size: 14.5px;
  color: var(--ink-2);
}

/* ---------- CTA / 小程序入口 ---------- */
.cta { padding-bottom: clamp(72px, 10vw, 120px); }
.cta__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
}
.linkbox {
  margin-top: 30px;
  padding: 20px;
  border-radius: var(--radius);
  border: 1px solid var(--line-2);
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(12px);
}
.linkbox__label { font-size: 11.5px; letter-spacing: 0.16em; color: var(--muted); text-transform: uppercase; }
.linkbox code {
  display: block;
  margin: 10px 0 16px;
  padding: 14px 16px;
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid var(--line);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  color: var(--lime);
  word-break: break-all;
  line-height: 1.6;
}
.linkbox__actions { display: flex; flex-wrap: wrap; gap: 12px; }
.cta__meta { display: flex; flex-wrap: wrap; gap: 28px; margin-top: 30px; }
.cta__meta li { display: flex; flex-direction: column; gap: 2px; }
.cta__meta span { font-size: 12px; color: var(--muted); }
.cta__meta b { font-size: 15px; }

.qr { display: flex; flex-direction: column; align-items: center; gap: 16px; }
.qr__card {
  width: min(300px, 78vw);
  padding: 18px;
  border-radius: 26px;
  background: #fff;
  box-shadow: 0 40px 90px -34px rgba(0, 0, 0, 0.9), 0 0 0 1px rgba(255, 255, 255, 0.1);
  text-align: center;
}
.qr__card img { width: 100%; border-radius: 12px; }
.qr__card p { margin-top: 12px; font-size: 13.5px; font-weight: 600; color: #0a0a0f; }
.qr__hint { font-size: 13px; color: var(--muted); text-align: center; }

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--line); padding: 44px 0 56px; position: relative; z-index: 1; }
.footer__inner { display: grid; gap: 26px; }
.footer__brand { display: flex; align-items: center; gap: 14px; }
.footer__brand b { font-size: 17px; }
.footer__brand p { font-size: 13px; color: var(--muted); }
.footer__nav { display: flex; flex-wrap: wrap; gap: 22px; }
.footer__nav a { font-size: 14px; color: var(--ink-2); }
.footer__nav a:hover { color: var(--lime); }
.footer__copy { font-size: 12.5px; color: var(--muted); }

/* ---------- 入场动画 ---------- */
.reveal { opacity: 0; transform: translateY(26px); }
.reveal.is-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

/* ---------- 新手引导：场景选择器 ---------- */
.guide__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 20px;
  align-items: stretch;
}
.guide__picker,
.guide__result {
  padding: clamp(20px, 2.6vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.guide__step {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--lime);
  text-transform: uppercase;
  font-weight: 600;
}
.guide__chips { display: flex; flex-wrap: wrap; gap: 8px; }
.gchip {
  border: 1px solid var(--line-2);
  background: rgba(255, 255, 255, 0.03);
  color: var(--ink-2);
  padding: 9px 14px;
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.25s, color 0.25s, border-color 0.25s, transform 0.25s var(--ease);
}
.gchip:hover { background: rgba(255, 255, 255, 0.08); color: #fff; transform: translateY(-1px); }
.gchip.is-active {
  background: linear-gradient(120deg, rgba(214, 255, 75, 0.18), rgba(124, 92, 255, 0.16));
  border-color: rgba(214, 255, 75, 0.45);
  color: #fff;
}

.guide__card {
  padding: 22px;
  border-radius: var(--radius-sm);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  border: 1px solid var(--line-2);
}
.guide__card h4 { font-size: 20px; margin-bottom: 4px; }
.guide__card .gc-sub { font-size: 13px; color: var(--muted); margin-bottom: 14px; }
.guide__card .gc-cost {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  padding: 4px 11px;
  border-radius: 999px;
  background: rgba(214, 255, 75, 0.12);
  border: 1px solid rgba(214, 255, 75, 0.3);
  color: var(--lime);
  margin-bottom: 16px;
}
.guide__card ol {
  display: grid;
  gap: 10px;
  counter-reset: gc;
  margin-bottom: 4px;
}
.guide__card ol li {
  position: relative;
  padding-left: 28px;
  font-size: 14px;
  color: var(--ink-2);
  counter-increment: gc;
}
.guide__card ol li::before {
  content: counter(gc);
  position: absolute;
  left: 0; top: 3px;
  width: 19px; height: 19px;
  border-radius: 6px;
  display: grid;
  place-items: center;
  font-size: 10.5px;
  font-weight: 700;
  color: var(--lime);
  background: rgba(214, 255, 75, 0.14);
  border: 1px solid rgba(214, 255, 75, 0.3);
}
.guide__hint { font-size: 12.5px; color: var(--muted); margin-top: 14px; }

/* ---------- AI 助手 ---------- */
.agent__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
}
.agent__chat { display: flex; flex-direction: column; gap: 12px; }
.chat {
  border: 1px solid var(--line-2);
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.015));
  overflow: hidden;
  backdrop-filter: blur(14px);
  box-shadow: 0 40px 80px -36px rgba(0, 0, 0, 0.85);
}
.chat__head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
}
.chat__dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 4px rgba(214, 255, 75, 0.2);
  animation: blink 1.8s infinite;
}
.chat__title { font-weight: 600; font-size: 14.5px; flex: 1; }
.chat__status { font-style: normal; font-size: 11.5px; color: var(--lime); }
.chat__body {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 320px;
  max-height: 420px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.1) transparent;
}
.chat__body::-webkit-scrollbar { width: 6px; }
.chat__body::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.12); border-radius: 3px; }
.bubble {
  max-width: 88%;
  padding: 11px 14px;
  border-radius: 16px;
  font-size: 14px;
  line-height: 1.6;
  animation: bubbleIn 0.4s var(--ease) both;
}
.bubble--user {
  align-self: flex-end;
  background: var(--lime);
  color: #0a0a0f;
  border-bottom-right-radius: 6px;
}
.bubble--bot {
  align-self: flex-start;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--line);
  color: var(--ink);
  border-bottom-left-radius: 6px;
}
.bubble--bot strong { color: var(--lime); }
.bubble--typing::after {
  content: "";
  display: inline-block;
  width: 6px;
  animation: dots 1.2s infinite steps(3, end);
  vertical-align: bottom;
  margin-left: 2px;
}
@keyframes bubbleIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}
@keyframes dots {
  0% { content: "  "; }
  33% { content: ". "; }
  66% { content: ".. "; }
  100% { content: "..."; }
}
.chat__quick { display: flex; flex-wrap: wrap; gap: 8px; padding: 12px 18px; border-top: 1px solid var(--line); }
.qbtn {
  font-size: 12.5px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  background: rgba(255, 255, 255, 0.04);
  color: var(--ink-2);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.qbtn:hover { background: rgba(214, 255, 75, 0.14); color: var(--lime); border-color: rgba(214, 255, 75, 0.35); }
.chat__bar {
  padding: 12px 18px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.chat__placeholder {
  flex: 1;
  font-size: 13.5px;
  color: var(--muted);
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
}
.chat__send {
  width: 38px; height: 38px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--lime);
  color: #0a0a0f;
}
.chat__send .ico { color: #0a0a0f; }
.chat__hint { font-size: 12px; color: var(--muted); text-align: center; }
.chat__hint a { color: var(--lime); }

/* =========================================================
   响应式：平板 (≤1080px)
   ========================================================= */
@media (max-width: 1080px) {
  .hero__grid { grid-template-columns: 1fr; gap: 56px; }
  .hero__copy { max-width: 640px; }
  .hero__visual { order: -1; }
  .phone { transform: none; }
  .float-card--img { left: 2%; }
  .float-card--3d, .float-card--credit { right: 2%; }
  .bento { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bento__card--wide { grid-column: span 2; }
  .guide__grid { grid-template-columns: 1fr; }
  .agent__grid { grid-template-columns: 1fr; }
  .fx { grid-template-columns: 1fr; }
  .fx__list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .fx__cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .three-grid { grid-template-columns: 1fr; }
  .flow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .flow li + li::before { display: none; }
  .cases { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .plans { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .cta__grid { grid-template-columns: 1fr; }
  .qr { align-items: flex-start; }
}

/* =========================================================
   响应式：小平板 / 大手机 (≤860px)
   ========================================================= */
@media (max-width: 860px) {
  .nav__links { display: none; }
  .nav__burger { display: flex; }
  .hide-sm { display: none; }
  .fx__list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .plans { grid-template-columns: 1fr; }
}

/* =========================================================
   响应式：手机 (≤640px)
   ========================================================= */
@media (max-width: 640px) {
  body { font-size: 15px; }
  .hero { padding-top: 104px; }
  .hero__stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 10px; }
  .hero__cta .btn { flex: 1 1 100%; }
  .chat__body { min-height: 260px; }
  .bento { grid-template-columns: 1fr; }
  .bento__card--wide { grid-column: span 1; }
  .fx__list { grid-template-columns: 1fr; }
  .fx__cards { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr; }
  .cases { grid-template-columns: 1fr; }
  .float-card--img { width: 138px; left: -6px; bottom: 2%; }
  .float-card--3d, .float-card--credit { padding: 10px 12px; right: -6px; }
  .float-card--3d { top: 10%; }
  .float-card--credit { top: 56%; }
  .compare { aspect-ratio: 4 / 3; }
  .marquee__track { font-size: 16px; }
  .footer__nav { gap: 16px; }
}

@media (max-width: 400px) {
  .hero__stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------- 无障碍 / 降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}

@media print {
  .aurora, .nav, .mobile-menu, .scroll-progress { display: none; }
  body { background: #fff; color: #000; }
}