/* =========================================================================
   悬溺 APP 官网 · 治愈系雾紫视觉系统
   编辑式非对称排版 / Bento 网格 / 深色分区 / 发丝级细节
   ========================================================================= */

/* ---------- 01 设计令牌 ---------- */
:root {
  /* 墨紫（深色分区） */
  --plum-950: #1e1a2e;
  --plum-900: #251f38;
  --plum-850: #2b2440;
  --plum-800: #332b4b;

  /* 主色阶 */
  --violet-700: #7263a8;
  --violet-600: #8b79c4;
  --violet-500: #a291d6;
  --violet-400: #bcabe3;
  --violet-300: #d3c7ec;
  --violet-200: #e5ddf5;
  --violet-100: #f0eafa;
  --violet-050: #f8f5fd;

  /* 中性 */
  --paper: #fcfbff;
  --ink-900: #241f33;
  --ink-800: #3a3450;
  --ink-700: #565070;
  --ink-500: #837d99;
  --ink-400: #a6a0b6;
  --ink-300: #c2bdcd;

  /* 描边 */
  --hair: rgba(120, 104, 165, .13);
  --hair-strong: rgba(120, 104, 165, .24);
  --hair-light: rgba(255, 255, 255, .78);
  --hair-dark: rgba(255, 255, 255, .09);

  /* 渐变 */
  --grad-brand: linear-gradient(118deg, #c0b0e8 0%, #a291d6 48%, #8571bf 100%);
  --grad-brand-soft: linear-gradient(140deg, #f2ecfd 0%, #e4daf6 100%);
  --grad-text: linear-gradient(98deg, #9381cf 0%, #bdaaec 46%, #7d6ab8 100%);
  --grad-hair: linear-gradient(90deg, rgba(162,145,214,0), rgba(162,145,214,.55), rgba(162,145,214,0));

  /* 阴影（分层） */
  --sh-1: 0 1px 2px rgba(60, 45, 100, .04), 0 6px 18px rgba(93, 74, 150, .05);
  --sh-2: 0 2px 4px rgba(60, 45, 100, .04), 0 16px 40px rgba(93, 74, 150, .09);
  --sh-3: 0 4px 10px rgba(60, 45, 100, .05), 0 32px 70px rgba(93, 74, 150, .14);
  --sh-4: 0 8px 20px rgba(60, 45, 100, .07), 0 48px 100px rgba(93, 74, 150, .18);
  --sh-glow: 0 10px 26px rgba(133, 113, 191, .32), 0 2px 6px rgba(133, 113, 191, .22);

  /* 圆角 */
  --r-xs: 10px;
  --r-sm: 14px;
  --r-md: 20px;
  --r-lg: 28px;
  --r-xl: 36px;
  --r-pill: 999px;

  /* 字体 */
  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB", "Microsoft YaHei",
               "Source Han Sans SC", "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont,
               "Segoe UI", Roboto, sans-serif;
  --font-serif: "Cormorant Garamond", "Times New Roman", Georgia, "Songti SC", serif;

  /* 缓动 */
  --ease: cubic-bezier(.22, .61, .36, 1);
  --ease-soft: cubic-bezier(.4, 0, .2, 1);
  --ease-out: cubic-bezier(.16, 1, .3, 1);

  --container: 1200px;
  --gutter: 32px;
  --nav-h: 78px;
}

/* ---------- 02 基础 ---------- */
* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-700);
  background: var(--paper);
  letter-spacing: .012em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, p, ul, figure { margin: 0; }
ul { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
em { font-style: normal; }

::selection { background: rgba(162, 145, 214, .24); color: var(--ink-900); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #f4f1fa; }
::-webkit-scrollbar-thumb {
  border: 3px solid #f4f1fa;
  border-radius: var(--r-pill);
  background: var(--violet-300);
}
::-webkit-scrollbar-thumb:hover { background: var(--violet-400); }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.only-mobile { display: none; }

/* ---------- 03 滚动进度 ---------- */
.progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 90;
  height: 2px;
  background: rgba(162, 145, 214, .1);
}
/* 用 transform: scaleX 驱动，避免每帧修改 width 触发重排 */
.progress span {
  display: block;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--violet-400), var(--violet-600));
  will-change: transform;
}

/* ---------- 04 氛围层 ---------- */
.ambient {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  background:
    radial-gradient(58% 42% at 14% -4%, #f3edff 0%, rgba(243, 237, 255, 0) 68%),
    radial-gradient(50% 38% at 94% 4%, #f7f1fb 0%, rgba(247, 241, 251, 0) 66%),
    radial-gradient(70% 50% at 50% 108%, #f1eafa 0%, rgba(241, 234, 250, 0) 70%),
    linear-gradient(180deg, #fefdff 0%, #faf8fe 46%, #f6f2fc 100%);
}

/* 柔光团：用多段 radial-gradient 直接做出模糊衰减，
   不再使用 filter: blur()——避免每帧对超大图层重复做高斯模糊 */
.ambient__blob {
  position: absolute;
  border-radius: 50%;
}
.ambient__blob--1 {
  width: 48vw; height: 48vw;
  top: -16vw; left: -10vw;
  background: radial-gradient(circle at 42% 42%,
    rgba(176, 158, 228, .46) 0%,
    rgba(176, 158, 228, .26) 30%,
    rgba(176, 158, 228, .09) 52%,
    rgba(176, 158, 228, 0) 74%);
  animation: drift-a 28s var(--ease-soft) infinite alternate;
}
.ambient__blob--2 {
  width: 40vw; height: 40vw;
  top: 4vh; right: -12vw;
  background: radial-gradient(circle at 55% 45%,
    rgba(204, 188, 240, .4) 0%,
    rgba(204, 188, 240, .2) 32%,
    rgba(204, 188, 240, .07) 54%,
    rgba(204, 188, 240, 0) 74%);
  animation: drift-b 34s var(--ease-soft) infinite alternate;
}
.ambient__blob--3 {
  width: 44vw; height: 44vw;
  bottom: -18vw; left: 26vw;
  background: radial-gradient(circle at 50% 50%,
    rgba(184, 200, 238, .28) 0%,
    rgba(184, 200, 238, .13) 34%,
    rgba(184, 200, 238, .04) 56%,
    rgba(184, 200, 238, 0) 76%);
  animation: drift-c 40s var(--ease-soft) infinite alternate;
}

@keyframes drift-a {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(4vw, 3vh, 0) scale(1.09); }
}
@keyframes drift-b {
  from { transform: translate3d(0, 0, 0) scale(1.06); }
  to   { transform: translate3d(-3vw, 4vh, 0) scale(.95); }
}
@keyframes drift-c {
  from { transform: translate3d(0, 0, 0) scale(.97); }
  to   { transform: translate3d(3vw, -3vh, 0) scale(1.08); }
}

/* 分栏参考线 */
.ambient__grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg, rgba(120, 104, 165, .05) 1px, transparent 1px);
  background-size: calc(100% / 6) 100%;
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 10%, #000 90%, transparent 100%);
  mask-image: linear-gradient(180deg, transparent 0%, #000 10%, #000 90%, transparent 100%);
}

/* 胶片颗粒：纯透明度叠加，不使用 mix-blend-mode（避免全页每帧重新合成） */
.ambient__grain {
  position: absolute;
  inset: 0;
  opacity: .055;
  background-repeat: repeat;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
}

main, .nav, .footer { position: relative; z-index: 1; }

/* ---------- 05 通用组件 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: var(--r-pill);
  font-size: 14.5px;
  font-weight: 500;
  letter-spacing: .028em;
  white-space: nowrap;
  transition: transform .5s var(--ease), box-shadow .5s var(--ease),
              background-color .5s var(--ease), border-color .5s var(--ease), color .5s var(--ease);
}
.btn__arrow {
  width: 15px; height: 15px;
  fill: none; stroke: currentColor;
  stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round;
  transition: transform .5s var(--ease);
}
.btn:hover .btn__arrow { transform: translateX(3px); }

.btn--lg { padding: 16px 34px; font-size: 15.5px; }

.btn--primary {
  color: #fff;
  background: var(--grad-brand);
  box-shadow: var(--sh-glow);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(133, 113, 191, .42), 0 3px 8px rgba(133, 113, 191, .24);
}

.btn--outline {
  color: var(--ink-800);
  background: rgba(255, 255, 255, .88);
  border: 1px solid var(--hair-strong);
  box-shadow: var(--sh-1);
}
.btn--outline:hover {
  transform: translateY(-2px);
  color: var(--violet-700);
  border-color: rgba(162, 145, 214, .6);
  box-shadow: var(--sh-2);
}

.link-underline {
  position: relative;
  padding: 6px 2px;
  font-size: 15.5px;
  color: var(--ink-800);
  letter-spacing: .03em;
}
.link-underline::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--hair-strong);
  transform-origin: right;
  transform: scaleX(1);
  transition: background-color .5s var(--ease);
}
.link-underline::before {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--violet-600);
  transform-origin: left;
  transform: scaleX(0);
  transition: transform .6s var(--ease);
  z-index: 1;
}
.link-underline:hover { color: var(--violet-700); }
.link-underline:hover::before { transform: scaleX(1); }

/* 区块通用 */
.section {
  position: relative;
  padding: 130px 0;
  scroll-margin-top: calc(var(--nav-h) + 20px);
}

/* 区块标题（编辑式） */
.head { margin-bottom: 60px; }

.head__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 26px;
}
.head__num {
  font-family: var(--font-serif);
  font-size: 15px;
  letter-spacing: .08em;
  color: var(--violet-600);
}
.head__line {
  flex: 0 0 56px;
  height: 1px;
  background: var(--hair-strong);
}
.head__en {
  font-family: var(--font-serif);
  font-size: 13.5px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--ink-400);
}

.head__row {
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: 48px;
  align-items: end;
}

.head__title {
  font-size: clamp(26px, 3.2vw, 42px);
  font-weight: 600;
  line-height: 1.32;
  letter-spacing: -.01em;
  color: var(--ink-900);
}
.head__title--md { font-size: clamp(24px, 2.6vw, 34px); }
.head__title--xl {
  font-size: clamp(30px, 4.4vw, 60px);
  line-height: 1.2;
  letter-spacing: -.02em;
}

.head__desc {
  max-width: 42em;
  padding-bottom: 6px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-500);
}

/* 区块内指向二级页的内链 */
.head__more {
  display: inline-block;
  margin-top: 16px;
  font-size: 14px;
}
.head--deep .link-underline { color: rgba(255, 255, 255, .84); }
.head--deep .link-underline::after { background: rgba(255, 255, 255, .26); }
.head--deep .link-underline::before { background: var(--violet-300); }
.head--deep .link-underline:hover { color: #fff; }

.head--center { text-align: center; }
.head--center .head__meta { justify-content: center; }
.head__meta--center { justify-content: center; }
.head__desc--center { margin: 22px auto 0; }

/* 深色区块标题 */
.head--deep .head__num { color: var(--violet-300); }
.head--deep .head__line { background: rgba(255, 255, 255, .22); }
.head--deep .head__en { color: rgba(255, 255, 255, .38); }
.head--deep .head__title { color: #fff; }
.head--deep .head__desc { color: rgba(255, 255, 255, .62); }

/* 滚动渐显 */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1.1s var(--ease-out) var(--d, 0s), transform 1.1s var(--ease-out) var(--d, 0s);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---------- 06 导航 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 60;
  padding: 16px 0;
  transition: padding .5s var(--ease);
}
.nav.is-scrolled { padding: 10px 0; }

.nav__shell {
  max-width: calc(var(--container) + 8px);
  margin: 0 auto;
  padding: 0 24px;
}

.nav__bar {
  position: relative;
  display: flex;
  align-items: center;
  gap: 22px;
  height: var(--nav-h);
  padding: 0 14px 0 22px;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  /* 不参与过渡的属性不写进来：backdrop-filter 过渡会引发持续重绘 */
  transition: background-color .35s var(--ease), border-color .35s var(--ease),
              box-shadow .35s var(--ease), height .4s var(--ease);
}

.nav.is-scrolled .nav__bar {
  height: 64px;
  background: rgba(255, 255, 255, .8);
  border-color: var(--hair-light);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  box-shadow: 0 1px 2px rgba(60, 45, 100, .04), 0 18px 40px rgba(93, 74, 150, .1);
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  flex-shrink: 0;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 34px; height: 34px;
  border-radius: 11px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: var(--grad-brand);
  box-shadow: var(--sh-glow);
  transition: transform .6s var(--ease);
}
.brand:hover .brand__mark { transform: rotate(-6deg) scale(1.05); }

.brand__name {
  display: flex;
  flex-direction: column;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: .08em;
  color: var(--ink-900);
}
.brand__name em {
  margin-top: 3px;
  font-family: var(--font-serif);
  font-size: 9.5px;
  font-weight: 400;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--ink-400);
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 2px;
  margin: 0 auto;
}

.nav__link {
  position: relative;
  padding: 9px 16px;
  border-radius: var(--r-pill);
  font-size: 14px;
  color: var(--ink-700);
  transition: color .45s var(--ease);
}
.nav__link::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--r-pill);
  background: rgba(162, 145, 214, 0);
  transition: background-color .45s var(--ease);
}
.nav__link:hover { color: var(--violet-700); }
.nav__link:hover::before { background: rgba(162, 145, 214, .09); }
.nav__link.is-active { color: var(--violet-700); font-weight: 500; }
.nav__link.is-active::before { background: rgba(162, 145, 214, .13); }

.nav__cta { flex-shrink: 0; padding: 11px 22px; font-size: 14px; }

.nav__toggle {
  display: none;
  position: relative;
  width: 44px; height: 44px;
  border-radius: 14px;
  border: 1px solid var(--hair);
  background: rgba(255, 255, 255, .7);
}
.nav__toggle span {
  position: absolute;
  left: 50%; top: 50%;
  width: 17px; height: 1.6px;
  border-radius: 2px;
  background: var(--violet-700);
  transition: transform .5s var(--ease), opacity .35s var(--ease);
}
.nav__toggle span:nth-child(1) { transform: translate(-50%, -4px); }
.nav__toggle span:nth-child(2) { transform: translate(-50%, 4px); }
.nav__toggle.is-open span:nth-child(1) { transform: translate(-50%, -1px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2) { transform: translate(-50%, -1px) rotate(-45deg); }

/* ---------- 07 首屏 ---------- */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 100svh;
  padding: calc(var(--nav-h) + 84px) 0 110px;
  overflow: hidden;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.06fr .94fr;
  gap: 56px;
  align-items: center;
  width: 100%;
}

.tagline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px 8px 14px;
  margin-bottom: 30px;
  border-radius: var(--r-pill);
  border: 1px solid var(--hair-light);
  background: rgba(255, 255, 255, .86);
  box-shadow: var(--sh-1);
  font-family: var(--font-serif);
  font-size: 12.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--violet-700);
}
.tagline__pulse {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--violet-500);
  box-shadow: 0 0 0 0 rgba(162, 145, 214, .6);
  animation: pulse 2.8s var(--ease-soft) infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(162, 145, 214, .55); }
  70%  { box-shadow: 0 0 0 9px rgba(162, 145, 214, 0); }
  100% { box-shadow: 0 0 0 0 rgba(162, 145, 214, 0); }
}

.hero__title {
  font-size: clamp(34px, 4.9vw, 68px);
  font-weight: 600;
  line-height: 1.14;
  letter-spacing: -.015em;
  color: var(--ink-900);
}
.hero__title-accent {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__sub {
  max-width: 30em;
  margin-top: 26px;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.9;
  color: var(--ink-500);
}

/* 两大卖点 */
.points {
  display: flex;
  align-items: stretch;
  gap: 26px;
  margin-top: 40px;
}
.point { display: flex; gap: 14px; }
.point__index {
  flex-shrink: 0;
  padding-top: 3px;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--violet-500);
}
.point b {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink-900);
  letter-spacing: .02em;
}
.point p {
  margin-top: 4px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-500);
}
.points__divider {
  flex: 0 0 1px;
  background: linear-gradient(180deg, transparent, var(--hair-strong), transparent);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 26px;
  margin-top: 44px;
}

/* 数据带 */
.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--hair);
}
.metrics li { display: flex; flex-direction: column; gap: 3px; }
.metrics strong {
  font-family: var(--font-serif);
  font-size: clamp(24px, 2.4vw, 32px);
  font-weight: 500;
  line-height: 1;
  color: var(--ink-900);
}
.metrics strong em { font-size: .58em; color: var(--violet-500); }
.metrics span {
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--ink-400);
}

/* 右侧视觉 */
.hero__visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 580px;
}

.halo {
  position: absolute;
  width: 460px; height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle,
    rgba(186, 168, 232, .38) 0%,
    rgba(186, 168, 232, .17) 34%,
    rgba(186, 168, 232, .05) 52%,
    rgba(186, 168, 232, 0) 68%);
  animation: halo-breathe 12s var(--ease-soft) infinite alternate;
}
/* 使用独立 scale 属性，避免与视差 transform 互相覆盖 */
@keyframes halo-breathe {
  from { scale: .94; opacity: .78; }
  to   { scale: 1.06; opacity: 1; }
}

/* 悬浮信息卡 */
.float {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 12px 18px 12px 13px;
  border-radius: var(--r-md);
  border: 1px solid var(--hair-light);
  background: rgba(255, 255, 255, .94);
  box-shadow: var(--sh-2);
  white-space: nowrap;
}
.float b {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-900);
}
.float p {
  margin-top: 2px;
  font-size: 11.5px;
  color: var(--ink-400);
}
.float__badge {
  display: grid;
  place-items: center;
  width: 30px; height: 30px;
  border-radius: 10px;
  font-size: 12.5px;
  font-weight: 600;
  color: #fff;
  background: var(--grad-brand);
  box-shadow: var(--sh-glow);
}
.float__badge--b { background: linear-gradient(140deg, #c3b2e8, #9181c4); }
.float__dot {
  width: 9px; height: 9px;
  margin: 0 6px;
  border-radius: 50%;
  background: var(--violet-500);
  box-shadow: 0 0 0 5px rgba(162, 145, 214, .16);
}

.float--top    { top: 13%; right: -2%; animation: bob 7s var(--ease-soft) infinite alternate; }
.float--mid    { bottom: 27%; left: -6%; animation: bob 8.5s var(--ease-soft) .6s infinite alternate; }
.float--bottom { bottom: 6%; right: 2%; animation: bob 9.5s var(--ease-soft) 1.2s infinite alternate; }
@keyframes bob {
  from { translate: 0 0; }
  to   { translate: 0 -14px; }
}

/* 首屏滚动提示 */
.hero__scroll {
  position: absolute;
  left: 50%; bottom: 34px;
  display: flex;
  align-items: center;
  gap: 10px;
  transform: translateX(-50%);
  font-family: var(--font-serif);
  font-size: 10px;
  letter-spacing: .34em;
  color: var(--ink-300);
}
.hero__scroll span {
  position: relative;
  display: block;
  width: 1px; height: 42px;
  background: linear-gradient(180deg, transparent, var(--hair-strong));
  overflow: hidden;
}
.hero__scroll span::after {
  content: "";
  position: absolute;
  top: -40%; left: 0;
  width: 1px; height: 40%;
  background: var(--violet-500);
  animation: scroll-dot 2.6s var(--ease-soft) infinite;
}
@keyframes scroll-dot {
  0% { top: -40%; }
  100% { top: 100%; }
}

/* ---------- 08 手机样机（真实界面截图，比例 497 : 1080） ---------- */
/* 默认等分排列，随容器自适应；小屏再切换为横向滚动 */
.phone {
  flex: 1 1 0;
  min-width: 0;
  max-width: 272px;
  text-align: center;
}

.phone__body {
  position: relative;
  width: 100%;
  padding: 9px;
  border-radius: 42px;
  background: linear-gradient(158deg, #ffffff 0%, #f6f2fd 46%, #e9e1f8 100%);
  border: 1px solid rgba(255, 255, 255, .95);
  box-shadow:
    0 2px 4px rgba(60, 45, 100, .05),
    0 22px 50px rgba(93, 74, 150, .16),
    inset 0 0 0 1px rgba(206, 190, 240, .32);
  transition: transform .5s var(--ease), box-shadow .5s var(--ease);
}
.phone:hover .phone__body {
  transform: translateY(-12px);
  box-shadow:
    0 2px 4px rgba(60, 45, 100, .05),
    0 30px 62px rgba(93, 74, 150, .22),
    inset 0 0 0 1px rgba(186, 168, 232, .5);
}

.phone__shot {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 33px;
  background: #f7f4fd;
}

.phone__label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--ink-500);
}
.phone__label i {
  font-family: var(--font-serif);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--violet-400);
}

/* 首屏单机：固定基准宽但允许收缩 */
.phone--hero { flex: 0 1 268px; }
/* 中间的「视频 · 双视图」作为主角机，略大一些 */
.phone--lead { flex-grow: 1.16; max-width: 312px; }

/* ---------- 界面墙：真实截图双向滚动 ---------- */
.gallery {
  display: grid;
  gap: 26px;
  margin-top: 70px;
  overflow: hidden;
}

.gallery__row {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 7%, #000 93%, transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0%, #000 7%, #000 93%, transparent 100%);
}

/* 时长随行内张数调整，保证两行滚动线速度接近 */
.gallery__track {
  display: flex;
  width: max-content;
  animation: gallery-ltr 112s linear infinite;
}
.gallery__track--reverse {
  animation-name: gallery-rtl;
  animation-duration: 145s;
}

/* 悬停或离开视口时暂停，避免无谓的持续合成 */
.gallery:hover .gallery__track,
.gallery.is-paused .gallery__track { animation-play-state: paused; }

@keyframes gallery-ltr {
  from { transform: translate3d(0, 0, 0); }
  to   { transform: translate3d(-50%, 0, 0); }
}
@keyframes gallery-rtl {
  from { transform: translate3d(-50%, 0, 0); }
  to   { transform: translate3d(0, 0, 0); }
}

.shot {
  flex: 0 0 auto;
  width: 178px;
  margin-right: 24px;
  text-align: center;
}

.shot__body {
  padding: 7px;
  border-radius: 30px;
  background: linear-gradient(158deg, #ffffff, #f2ecfb);
  border: 1px solid rgba(255, 255, 255, .95);
  box-shadow:
    0 2px 4px rgba(60, 45, 100, .04),
    0 16px 36px rgba(93, 74, 150, .12),
    inset 0 0 0 1px rgba(206, 190, 240, .3);
  transition: transform .5s var(--ease), box-shadow .5s var(--ease);
}
.shot:hover .shot__body {
  transform: translateY(-8px);
  box-shadow:
    0 4px 8px rgba(60, 45, 100, .05),
    0 26px 52px rgba(93, 74, 150, .18),
    inset 0 0 0 1px rgba(186, 168, 232, .5);
}

.shot img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 23px;
  background: #f7f4fd;
}

.shot figcaption {
  margin-top: 14px;
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--ink-400);
}

/* ---------- 09 Bento 网格 ---------- */
.bento {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 20px;
}

.tile {
  position: relative;
  grid-column: span 4;
  min-width: 0;
  padding: 34px 32px 32px;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: rgba(255, 255, 255, .92);
  border: 1px solid var(--hair-light);
  box-shadow: var(--sh-1);
  transition: transform .55s var(--ease-out), box-shadow .55s var(--ease-out),
              border-color .55s var(--ease), background-color .55s var(--ease);
}
.tile::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(90% 60% at 50% -10%, rgba(186, 168, 232, .22), transparent 68%);
  opacity: 0;
  transition: opacity .7s var(--ease);
  pointer-events: none;
}
.tile:hover {
  transform: translateY(-5px);
  background: #fff;
  border-color: rgba(162, 145, 214, .34);
  box-shadow: var(--sh-3);
}
.tile:hover::before { opacity: 1; }

.tile--span7 { grid-column: span 7; }
.tile--span5 { grid-column: span 5; }
.tile--span4 { grid-column: span 4; }
.tile--span3 { grid-column: span 3; }

.tile__num {
  position: absolute;
  top: 26px; right: 28px;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--violet-300);
  transition: color .7s var(--ease);
}
.tile:hover .tile__num { color: var(--violet-500); }

.tile__icon {
  display: inline-grid;
  place-items: center;
  width: 46px; height: 46px;
  margin-bottom: 24px;
  border-radius: var(--r-sm);
  color: var(--violet-600);
  background: linear-gradient(140deg, #f4effd 0%, #e7dff7 100%);
  border: 1px solid rgba(255, 255, 255, .85);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .95), 0 8px 18px rgba(133, 113, 191, .13);
  transition: transform .7s var(--ease);
}
.tile:hover .tile__icon { transform: translateY(-3px) scale(1.04); }
.tile__icon svg {
  width: 23px; height: 23px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.45;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.tile__title {
  margin-bottom: 12px;
  font-size: 18.5px;
  font-weight: 600;
  letter-spacing: .015em;
  color: var(--ink-900);
}

.tile__text {
  font-size: 14px;
  line-height: 1.9;
  color: var(--ink-500);
}

/* --- 特色卡视觉装饰 --- */
.tile__visual {
  position: relative;
  margin-top: 26px;
}

/* Y 币 */
.tile__visual--coin {
  display: flex;
  align-items: center;
  height: 74px;
  padding-left: 8px;
  border-radius: var(--r-md);
  background: linear-gradient(120deg, rgba(244, 239, 253, .9), rgba(233, 225, 247, .55));
  border: 1px solid rgba(255, 255, 255, .8);
}
.tile__visual--coin em {
  margin-left: auto;
  padding-right: 20px;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--violet-600);
}
.coin {
  display: grid;
  place-items: center;
  width: 44px; height: 44px;
  border-radius: 50%;
  font-family: var(--font-serif);
  font-size: 18px;
  color: #fff;
  background: var(--grad-brand);
  box-shadow: var(--sh-glow);
}
.coin--2 { margin-left: -14px; opacity: .72; transform: scale(.9); }
.coin--3 { margin-left: -14px; opacity: .42; transform: scale(.8); }

/* 双人会员 */
.tile__visual--duo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.duo-chip {
  flex: 1;
  padding: 13px 16px;
  border-radius: var(--r-sm);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-800);
  background: rgba(255, 255, 255, .9);
  border: 1px solid var(--hair);
  box-shadow: var(--sh-1);
}
.duo-chip em {
  display: block;
  margin-top: 3px;
  font-family: var(--font-serif);
  font-size: 11.5px;
  color: var(--violet-600);
}
.duo-chip--b { background: linear-gradient(135deg, #f4effd, #e8e0f7); }
.duo-link {
  flex: 0 0 26px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--violet-400), transparent);
}

/* 双视图 */
.tile__visual--views {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 74px;
}
.view {
  display: block;
  height: 100%;
  border-radius: var(--r-sm);
  border: 1px solid rgba(255, 255, 255, .85);
  background: #fff;
  box-shadow: var(--sh-1);
}
.view--card {
  width: 58px;
  background-image: radial-gradient(circle at 50% 34%, rgba(186, 168, 232, .55) 0 14px, transparent 15px);
  background-repeat: no-repeat;
}
.view--flow {
  flex: 1;
  background-image:
    linear-gradient(180deg, rgba(186, 168, 232, .42) 0 6px, transparent 6px),
    linear-gradient(180deg, rgba(186, 168, 232, .3) 0 6px, transparent 6px);
  background-size: 100% 24px, 100% 24px;
  background-position: 0 14px, 0 46px;
}
.tile__visual--views em {
  font-family: var(--font-serif);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--violet-600);
}

/* 情绪标签 */
.tile__visual--mood { display: flex; flex-wrap: wrap; gap: 9px; }
.tile__visual--mood span {
  padding: 8px 16px;
  border-radius: var(--r-pill);
  font-size: 12.5px;
  color: var(--violet-700);
  background: rgba(255, 255, 255, .86);
  border: 1px solid var(--hair-light);
  box-shadow: var(--sh-1);
}

/* ---------- 10 深色分区 ---------- */
.section--deep {
  position: relative;
  overflow: hidden;
  /* 提亮一档，与全站低饱和治愈基调保持一致 */
  background: linear-gradient(168deg, #3c3558 0%, #312a4a 46%, #29233e 100%);
}
.section--deep::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .1;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E");
}

.deep-glow {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}
.deep-glow--a {
  width: 44vw; height: 44vw;
  top: -16vw; left: -8vw;
  background: radial-gradient(circle,
    rgba(150, 128, 210, .34) 0%,
    rgba(150, 128, 210, .15) 34%,
    rgba(150, 128, 210, 0) 70%);
}
.deep-glow--b {
  width: 38vw; height: 38vw;
  bottom: -14vw; right: -6vw;
  background: radial-gradient(circle,
    rgba(122, 116, 190, .26) 0%,
    rgba(122, 116, 190, .11) 36%,
    rgba(122, 116, 190, 0) 72%);
}

.tile--dark {
  background: rgba(255, 255, 255, .075);
  border-color: rgba(255, 255, 255, .11);
  box-shadow: 0 2px 6px rgba(0, 0, 0, .12), 0 22px 50px rgba(0, 0, 0, .16);
}
.tile--dark::before {
  background: radial-gradient(90% 70% at 50% -10%, rgba(186, 168, 232, .18), transparent 70%);
}
.tile--dark:hover {
  background: rgba(255, 255, 255, .095);
  border-color: rgba(190, 175, 235, .34);
  box-shadow: 0 4px 12px rgba(0, 0, 0, .2), 0 32px 70px rgba(0, 0, 0, .3);
}
.tile--dark .tile__num { color: rgba(255, 255, 255, .24); }
.tile--dark:hover .tile__num { color: rgba(200, 185, 240, .6); }
.tile--dark .tile__icon {
  color: var(--violet-300);
  background: linear-gradient(140deg, rgba(255, 255, 255, .12), rgba(255, 255, 255, .04));
  border-color: rgba(255, 255, 255, .12);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .16);
}
.tile--dark .tile__title { color: #fff; }
.tile--dark .tile__text { color: rgba(255, 255, 255, .6); }

/* 深色卡内装饰 */
.tile__visual--feed { display: grid; gap: 8px; margin-top: 24px; }
.mini-post {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 10px 12px;
  border-radius: 13px;
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .07);
}
.mini-ava {
  width: 22px; height: 22px;
  flex-shrink: 0;
  border-radius: 50%;
  background: linear-gradient(140deg, rgba(200, 186, 238, .85), rgba(150, 133, 208, .55));
}
.mini-ava--b {
  background: linear-gradient(140deg, rgba(186, 198, 238, .8), rgba(140, 133, 200, .5));
}

.mini-post b, .mini-post em {
  display: block;
  height: 5px;
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, .22);
}
.mini-post b { width: 46px; margin-bottom: 5px; }
.mini-post em { width: 76px; background: rgba(255, 255, 255, .12); }
.mini-wave { display: flex; align-items: center; gap: 3px; height: 26px; padding: 0 4px; }
.mini-wave span {
  flex: 1;
  border-radius: var(--r-pill);
  background: linear-gradient(180deg, rgba(196, 181, 234, .9), rgba(150, 133, 208, .5));
  animation: bar 3s var(--ease-soft) infinite;
}
.mini-wave span:nth-child(1) { height: 34%; }
.mini-wave span:nth-child(2) { height: 62%; animation-delay: .1s; }
.mini-wave span:nth-child(3) { height: 44%; animation-delay: .2s; }
.mini-wave span:nth-child(4) { height: 86%; animation-delay: .3s; }
.mini-wave span:nth-child(5) { height: 52%; animation-delay: .4s; }
.mini-wave span:nth-child(6) { height: 94%; animation-delay: .5s; }
.mini-wave span:nth-child(7) { height: 40%; animation-delay: .6s; }
.mini-wave span:nth-child(8) { height: 72%; animation-delay: .7s; }
.mini-wave span:nth-child(9) { height: 50%; animation-delay: .8s; }

.orbit {
  position: relative;
  display: grid;
  place-items: center;
  height: 132px;
  margin-top: 26px;
}
.orbit__ring {
  position: absolute;
  width: 104px; height: 104px;
  border-radius: 50%;
  border: 1px dashed rgba(190, 175, 235, .3);
  animation: spin 26s linear infinite;
}
.orbit__ring--2 {
  width: 70px; height: 70px;
  border-style: solid;
  border-color: rgba(190, 175, 235, .16);
  animation-duration: 18s;
  animation-direction: reverse;
}
.orbit__core {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--grad-brand);
  box-shadow: 0 0 0 10px rgba(186, 168, 232, .1), 0 0 34px rgba(162, 145, 214, .6);
}

.bottle {
  position: relative;
  display: grid;
  place-items: center;
  height: 132px;
  margin-top: 26px;
}
.bottle__glass {
  position: relative;
  width: 34px; height: 62px;
  border-radius: 8px 8px 14px 14px;
  border: 1.5px solid rgba(190, 175, 235, .5);
  background: linear-gradient(180deg, rgba(186, 168, 232, .14), rgba(186, 168, 232, .04));
  animation: bob-y 6s var(--ease-soft) infinite alternate;
}
.bottle__glass::before {
  content: "";
  position: absolute;
  top: -12px; left: 50%;
  width: 12px; height: 12px;
  border-radius: 3px 3px 0 0;
  border: 1.5px solid rgba(190, 175, 235, .5);
  border-bottom: 0;
  transform: translateX(-50%);
}
.bottle__glass i {
  position: absolute;
  left: 50%; bottom: 9px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: rgba(186, 168, 232, .55);
  transform: translateX(-50%);
}
.bottle__sea {
  position: absolute;
  bottom: 20px;
  width: 96px; height: 34px;
  border-radius: 50%;
  border-bottom: 1px solid rgba(190, 175, 235, .28);
  background: radial-gradient(60% 100% at 50% 100%, rgba(150, 128, 210, .22), transparent 70%);
}
@keyframes bob-y {
  from { transform: translateY(0) rotate(-3deg); }
  to   { transform: translateY(-12px) rotate(3deg); }
}

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.chips li {
  padding: 8px 14px;
  border-radius: var(--r-pill);
  font-size: 12px;
  color: rgba(255, 255, 255, .76);
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .09);
}

.nodes {
  position: relative;
  height: 150px;
  margin-top: 20px;
}
.nodes__ring {
  position: absolute;
  left: 50%; top: 50%;
  width: 116px; height: 116px;
  border-radius: 50%;
  border: 1px dashed rgba(190, 175, 235, .24);
  transform: translate(-50%, -50%);
}
.node {
  position: absolute;
  display: grid;
  place-items: center;
  width: 38px; height: 38px;
  border-radius: 50%;
  font-size: 12px;
  color: rgba(255, 255, 255, .82);
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .12);
  transition: transform .7s var(--ease), background-color .7s var(--ease);
}
.node--c {
  left: 50%; top: 50%;
  width: 48px; height: 48px;
  font-size: 14px;
  color: #fff;
  background: var(--grad-brand);
  border-color: transparent;
  box-shadow: 0 0 0 12px rgba(186, 168, 232, .1), 0 12px 30px rgba(133, 113, 191, .4);
  transform: translate(-50%, -50%);
}
.node--n1 { left: 50%; top: 4px; transform: translateX(-50%); }
.node--n2 { right: 24px; top: 34%; }
.node--n3 { right: 54px; bottom: 8px; }
.node--n4 { left: 54px; bottom: 8px; }
.tile--dark:hover .node--n1 { transform: translateX(-50%) translateY(-4px); }
.tile--dark:hover .node--n2 { transform: translateY(-4px); }
.tile--dark:hover .node--n3 { transform: translateY(-4px); }
.tile--dark:hover .node--n4 { transform: translateY(-4px); }

.level { margin-top: 26px; }
.level__bar {
  height: 6px;
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, .08);
  overflow: hidden;
}
.level__bar span {
  display: block;
  width: 64%;
  height: 100%;
  border-radius: var(--r-pill);
  background: linear-gradient(90deg, var(--violet-400), var(--violet-600));
  box-shadow: 0 0 14px rgba(162, 145, 214, .6);
}
.level__meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-top: 10px;
}
.level__meta b {
  font-family: var(--font-serif);
  font-size: 17px;
  color: #fff;
}
.level__meta em { font-size: 11px; color: rgba(255, 255, 255, .5); }

/* ---------- 11 跑马灯 ---------- */
.marquee {
  position: relative;
  z-index: 1;
  padding: 24px 0;
  overflow: hidden;
  border-top: 1px solid var(--hair);
  border-bottom: 1px solid var(--hair);
  background: rgba(255, 255, 255, .5);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.marquee__track {
  display: flex;
  align-items: center;
  gap: 30px;
  width: max-content;
  animation: marquee 42s linear infinite;
}
.marquee__track span {
  font-size: 15px;
  letter-spacing: .14em;
  color: var(--ink-400);
  white-space: nowrap;
}
.marquee__track i {
  font-size: 9px;
  color: var(--violet-400);
}
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ---------- 12 APP 预览 ---------- */
.section--preview { padding-bottom: 90px; }

.stage {
  position: relative;
  padding-top: 20px;
}

.phones {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 22px;
  max-width: 1240px;
  margin: 0 auto;
  padding: 20px 32px 30px;
}

.phone--lead .phone__body {
  box-shadow:
    0 2px 6px rgba(60, 45, 100, .06),
    0 28px 64px rgba(93, 74, 150, .2),
    inset 0 0 0 1px rgba(186, 168, 232, .44);
}

.stage__floor {
  display: block;
  width: 78%;
  max-width: 980px;
  height: 60px;
  margin: -16px auto 0;
  border-radius: 50%;
  background: radial-gradient(50% 100% at 50% 50%,
    rgba(133, 113, 191, .13) 0%,
    rgba(133, 113, 191, .05) 46%,
    transparent 76%);
}

/* ---------- 13 关于我们 ---------- */
.about__grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 72px;
  align-items: start;
}

.about__p {
  margin-top: 20px;
  font-size: 15px;
  line-height: 2;
  color: var(--ink-500);
}

.about__facts {
  display: grid;
  gap: 0;
  margin-top: 38px;
  border-top: 1px solid var(--hair);
}
.about__facts div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--hair);
}
.about__facts b {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-900);
}
.about__facts span { font-size: 13px; color: var(--ink-400); }

/* 地址较长，改为上下排布 */
.about__facts .is-stack {
  display: grid;
  gap: 5px;
}
.about__facts .is-stack span { line-height: 1.7; }

.about__link {
  font-variant-numeric: tabular-nums;
  letter-spacing: .04em;
  color: var(--violet-700);
  transition: color .4s var(--ease), border-color .4s var(--ease);
  border-bottom: 1px solid rgba(162, 145, 214, .35);
}
.about__link:hover {
  color: var(--violet-500);
  border-bottom-color: var(--violet-500);
}

.about__card {
  position: relative;
  padding: 46px 40px 38px;
  border-radius: var(--r-xl);
  overflow: hidden;
  background: rgba(255, 255, 255, .93);
  border: 1px solid var(--hair-light);
  box-shadow: var(--sh-3);
}
.about__card::after {
  content: "";
  position: absolute;
  top: -35%; right: -28%;
  width: 74%; height: 86%;
  background: radial-gradient(circle, rgba(186, 168, 232, .34), transparent 68%);
  pointer-events: none;
}

.about__quote-mark {
  position: absolute;
  top: 18px; right: 34px;
  font-family: var(--font-serif);
  font-size: 92px;
  line-height: 1;
  color: rgba(162, 145, 214, .16);
}

.about__quote {
  position: relative;
  font-size: clamp(22px, 2.3vw, 28px);
  font-weight: 500;
  line-height: 1.62;
  letter-spacing: .03em;
  color: var(--ink-900);
}

.about__sign {
  display: flex;
  align-items: center;
  gap: 13px;
  margin-top: 28px;
}
.about__seal {
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  border-radius: 13px;
  font-size: 16px;
  color: #fff;
  background: var(--grad-brand);
  box-shadow: var(--sh-glow);
}
.about__sign b {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-900);
}
.about__sign em {
  font-family: var(--font-serif);
  font-size: 10px;
  letter-spacing: .26em;
  color: var(--ink-400);
}

.about__mini {
  display: grid;
  gap: 13px;
  margin-top: 32px;
  padding-top: 26px;
  border-top: 1px solid var(--hair);
}
.about__mini div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}
.about__mini b { font-size: 14px; font-weight: 600; color: var(--ink-800); }
.about__mini span { font-size: 12.5px; color: var(--ink-400); }

/* ---------- 14 下载 ---------- */
.dl {
  position: relative;
  padding: 86px 48px 74px;
  border-radius: var(--r-xl);
  overflow: hidden;
  text-align: center;
  background:
    radial-gradient(70% 120% at 50% 0%, rgba(226, 216, 244, .8) 0%, rgba(240, 234, 250, .5) 44%, rgba(255, 255, 255, .76) 100%);
  border: 1px solid var(--hair-light);
  box-shadow: var(--sh-4);
}
.dl__glow {
  position: absolute;
  bottom: -55%; left: 50%;
  width: 82%; height: 92%;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(186, 168, 232, .3), transparent 70%);
  pointer-events: none;
}
.dl__word {
  position: absolute;
  left: 50%; bottom: -4%;
  transform: translateX(-50%);
  font-family: var(--font-serif);
  font-size: clamp(90px, 15vw, 190px);
  font-weight: 500;
  letter-spacing: .1em;
  line-height: 1;
  color: rgba(133, 113, 191, .07);
  pointer-events: none;
  white-space: nowrap;
}
.dl__inner { position: relative; }

.dl__title {
  font-size: clamp(28px, 3.6vw, 46px);
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--ink-900);
}
.dl__desc {
  margin-top: 18px;
  font-size: 15px;
  color: var(--ink-500);
}
.dl__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-top: 40px;
}
.dl__note {
  margin-top: 28px;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--ink-300);
}

/* ---------- 15 底部 ---------- */
.footer {
  position: relative;
  padding: 88px 0 0;
  overflow: hidden;
  border-top: 1px solid rgba(255, 255, 255, .8);
  background: linear-gradient(180deg, rgba(246, 242, 252, .55) 0%, rgba(237, 230, 249, .9) 100%);
}

.footer__top {
  display: grid;
  grid-template-columns: 1.1fr 1.4fr;
  gap: 60px;
  padding-bottom: 54px;
}

.footer__slogan {
  margin-top: 20px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: .03em;
  color: var(--ink-800);
}
.footer__sub {
  margin-top: 8px;
  font-size: 13.5px;
  color: var(--ink-400);
}

.footer__cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.footer__col h4 {
  margin-bottom: 18px;
  font-family: var(--font-serif);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--ink-400);
}
.footer__col a {
  display: block;
  padding: 5px 0;
  font-size: 14px;
  color: var(--ink-700);
  transition: color .4s var(--ease), transform .4s var(--ease);
}
.footer__col a:hover { color: var(--violet-700); transform: translateX(3px); }

.footer__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 26px 0;
  border-top: 1px solid var(--hair);
  border-bottom: 1px solid var(--hair);
  font-size: 13.5px;
  color: var(--ink-500);
}
.footer__links a { transition: color .4s var(--ease); }
.footer__links a:hover { color: var(--violet-700); }
.footer__links span { color: var(--ink-300); opacity: .55; }

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px 44px;
  padding: 28px 0 34px;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--ink-400);
}
.footer__copy { flex: 0 0 auto; }

.footer__legal {
  display: grid;
  gap: 8px;
  justify-items: end;
}

.footer__icp {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 9px;
  letter-spacing: .025em;
}
.footer__icp i {
  font-style: normal;
  color: var(--ink-300);
  opacity: .5;
}
.footer__icp a { transition: color .4s var(--ease); }
.footer__icp a:hover { color: var(--violet-700); }

/* 电话与地址共用同一行样式 */
.footer__meta {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 7px;
  letter-spacing: .025em;
}
.footer__meta svg {
  width: 13px; height: 13px;
  flex-shrink: 0;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.4;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: .8;
}
.footer__tel a {
  font-variant-numeric: tabular-nums;
  transition: color .4s var(--ease);
}
.footer__tel a:hover { color: var(--violet-700); }

.footer__watermark {
  margin: 0 0 -3.4vw;
  text-align: center;
  font-family: var(--font-serif);
  font-size: clamp(72px, 17vw, 230px);
  font-weight: 500;
  line-height: .82;
  letter-spacing: .06em;
  color: transparent;
  background: linear-gradient(180deg, rgba(133, 113, 191, .16) 0%, rgba(133, 113, 191, 0) 82%);
  -webkit-background-clip: text;
  background-clip: text;
  user-select: none;
  pointer-events: none;
}

/* ---------- 16 回到顶部 ---------- */
.to-top {
  position: fixed;
  right: 26px; bottom: 30px;
  z-index: 50;
  display: grid;
  place-items: center;
  width: 46px; height: 46px;
  border-radius: 16px;
  color: var(--violet-700);
  background: rgba(255, 255, 255, .92);
  border: 1px solid var(--hair-light);
  box-shadow: var(--sh-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity .5s var(--ease), transform .5s var(--ease), visibility .5s,
              background-color .5s var(--ease), color .5s var(--ease);
}
.to-top svg {
  width: 16px; height: 16px;
  fill: none; stroke: currentColor;
  stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round;
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover {
  transform: translateY(-3px);
  color: #fff;
  background: var(--grad-brand);
  border-color: transparent;
}

/* =========================================================================
   17 响应式
   ========================================================================= */

@media (max-width: 1120px) {
  :root { --gutter: 28px; }

  .tile, .tile--span7, .tile--span5, .tile--span4, .tile--span3 { grid-column: span 6; }

  .hero__grid { grid-template-columns: 1fr .88fr; gap: 40px; }
  .float--mid { left: -3%; }
  .float--top { right: 0; }
}

@media (max-width: 980px) {
  :root { --nav-h: 70px; }

  .section { padding: 92px 0; }
  .head { margin-bottom: 44px; }
  .head__row { grid-template-columns: 1fr; gap: 18px; align-items: start; }
  .head__desc { padding-bottom: 0; }

  /* 导航：下拉面板 */
  .ambient__grid { background-size: calc(100% / 3) 100%; }

  .nav__bar { padding: 0 12px 0 18px; }
  .nav__menu {
    position: absolute;
    top: calc(100% + 12px);
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    margin: 0;
    padding: 14px;
    border-radius: var(--r-lg);
    background: rgba(255, 255, 255, .96);
    border: 1px solid var(--hair-light);
    backdrop-filter: blur(14px) saturate(140%);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
    box-shadow: var(--sh-3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity .45s var(--ease), transform .45s var(--ease), visibility .45s;
  }
  .nav__menu.is-open { opacity: 1; visibility: visible; transform: translateY(0); }
  .nav__link { padding: 13px 16px; text-align: center; font-size: 15px; }
  .nav__cta { margin-left: auto; }
  .nav__toggle { display: grid; place-items: center; }

  /* 首屏单列 */
  .hero { min-height: auto; padding: calc(var(--nav-h) + 68px) 0 80px; }
  .hero__grid { grid-template-columns: 1fr; gap: 64px; }
  .hero__copy { text-align: center; display: flex; flex-direction: column; align-items: center; }
  .hero__sub { margin-left: auto; margin-right: auto; }
  .points { text-align: left; }
  .hero__actions { justify-content: center; }
  .hero__visual { min-height: 500px; }
  .hero__scroll { display: none; }

  /* 平板起改为横向滚动 + 吸附，避免 5 台机被压得过窄 */
  .phones {
    justify-content: flex-start;
    gap: 20px;
    padding: 16px 28px 26px;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .phones::-webkit-scrollbar { display: none; }
  .phone,
  .phone--lead {
    flex: 0 0 auto;
    width: 238px;
    max-width: none;
    scroll-snap-align: center;
  }

  /* 关于我们单列 */
  .about__grid { grid-template-columns: 1fr; gap: 48px; }

  /* 底部 */
  .footer__top { grid-template-columns: 1fr; gap: 44px; }
  .footer__bottom {
    justify-content: center;
    align-items: center;
    text-align: center;
  }
  .footer__legal { justify-items: center; }
  .footer__icp,
  .footer__meta { justify-content: center; }
}

@media (max-width: 720px) {
  :root { --gutter: 20px; }

  body { font-size: 15px; }
  .section { padding: 72px 0; }

  .tile, .tile--span7, .tile--span5, .tile--span4, .tile--span3 { grid-column: span 12; }
  .bento { gap: 16px; }
  .tile { padding: 28px 24px 26px; }
  .tile__num { top: 22px; right: 22px; }

  .only-mobile { display: block; }

  /* 首屏 */
  .tagline { font-size: 11px; letter-spacing: .12em; padding: 7px 15px 7px 12px; }
  .hero__sub { margin-top: 20px; }
  .points { flex-direction: column; gap: 18px; width: 100%; }
  .points__divider { height: 1px; flex: 0 0 1px; width: 100%; background: linear-gradient(90deg, transparent, var(--hair-strong), transparent); }
  .hero__actions { flex-direction: column; align-items: stretch; width: 100%; max-width: 340px; gap: 18px; }
  .hero__actions .btn { width: 100%; }
  .link-underline { text-align: center; }
  .metrics { grid-template-columns: repeat(2, 1fr); gap: 22px 16px; margin-top: 42px; }
  .metrics li:last-child { grid-column: auto; }

  .hero__visual { min-height: 470px; }
  .phone--hero { flex: 0 0 auto; width: 216px; max-width: none; }
  .phone--hero .phone__body { border-radius: 36px; padding: 8px; }
  .phone--hero .phone__shot { border-radius: 28px; }
  .float--top    { top: 4%; right: -4%; }
  .float--mid    { bottom: 12%; left: -4%; }
  .float--bottom { bottom: -2%; right: -4%; }
  .float { padding: 9px 14px 9px 11px; }
  .float b { font-size: 11.5px; }
  .float p { font-size: 10px; }
  .float__badge { width: 26px; height: 26px; font-size: 11px; }

  /* 跑马灯 */
  .marquee { padding: 18px 0; }
  .marquee__track span { font-size: 13.5px; }

  /* 预览 */
  .section--preview { padding-bottom: 56px; }
  .phones { justify-content: flex-start; gap: 18px; padding: 12px 20px 24px; }
  .phone,
  .phone--lead,
  .phone--hero { width: 216px; }
  .phone__body { border-radius: 36px; padding: 8px; }
  .phone__shot { border-radius: 28px; }
  .stage__floor { width: 90%; }

  .gallery { gap: 18px; margin-top: 46px; }
  .shot { width: 148px; margin-right: 16px; }
  .shot__body { padding: 6px; border-radius: 26px; }
  .shot img { border-radius: 20px; }
  .shot figcaption { margin-top: 10px; font-size: 11.5px; }

  /* 关于 */
  .about__card { padding: 34px 26px 30px; }
  .about__quote-mark { font-size: 68px; right: 22px; }

  /* 下载 */
  .dl { padding: 58px 24px 48px; }
  .dl__actions { flex-direction: column; align-items: stretch; }
  .dl__actions .btn { width: 100%; }

  /* 底部 */
  .footer { padding-top: 64px; }
  .footer__cols { grid-template-columns: 1fr 1fr; gap: 28px 20px; }
  .footer__watermark { margin-bottom: -2.6vw; }
  .to-top { right: 16px; bottom: 18px; width: 42px; height: 42px; }
}

@media (max-width: 420px) {
  .footer__cols { grid-template-columns: 1fr; gap: 24px; }
  .footer__links { gap: 10px; font-size: 12.5px; }
}

/* 触屏设备去掉 hover 位移 */
@media (hover: none) {
  .tile:hover,
  .phone:hover .phone__body,
  .float:hover,
  .btn--primary:hover,
  .btn--outline:hover,
  .to-top:hover { transform: none; }
}

/* =========================================================================
   18 性能优化
   ========================================================================= */

/* 用 clip 代替 hidden：不产生滚动容器，fixed 元素与滚动路径更高效 */
@supports (overflow-x: clip) {
  body { overflow-x: clip; }
}

/* 持续动画的图层提前提升，避免逐帧重新判定 */
.marquee__track { will-change: transform; }
.progress span { backface-visibility: hidden; }

/* 隔离绘制范围，滚动时不必重算整块区域 */
.section--deep,
.marquee,
.section--preview { contain: paint; }

/* 移动端降级：关闭大面积柔光漂移，保留静态氛围 */
@media (max-width: 900px) {
  .ambient__blob { animation: none; }
  .deep-glow { display: none; }
  .ambient__grid { display: none; }
}

@media (max-width: 720px) {
  .float { animation: none; }
  .halo { animation: none; }
  .phone__body { transition: none; }
  .tile { transition-duration: .3s; }
  /* 小屏取消 hover 位移，避免触屏下的无效重绘 */
  .phone:hover .phone__body { transform: none; }
}

/* =========================================================================
   19 二级页面
   ========================================================================= */
.page {
  position: relative;
  padding: calc(var(--nav-h) + 96px) 0 110px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin-bottom: 26px;
  font-size: 12.5px;
  color: var(--ink-400);
}
.breadcrumb a { transition: color .4s var(--ease); }
.breadcrumb a:hover { color: var(--violet-700); }
.breadcrumb i { font-style: normal; opacity: .45; }
.breadcrumb strong { font-weight: 400; color: var(--ink-700); }

/* 页面标题区 */
.page-head {
  max-width: 780px;
  padding-bottom: 46px;
  border-bottom: 1px solid var(--hair);
}
.page-head__en {
  margin-bottom: 18px;
  font-family: var(--font-serif);
  font-size: 12.5px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--violet-500);
}
.page-head h1 {
  font-size: clamp(30px, 4.2vw, 52px);
  font-weight: 600;
  line-height: 1.24;
  letter-spacing: -.015em;
  color: var(--ink-900);
}
.page-head__lead {
  margin-top: 22px;
  font-size: 16px;
  line-height: 1.95;
  color: var(--ink-500);
}
.page-head__meta {
  margin-top: 24px;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--ink-300);
}

/* 正文排版 */
.prose {
  max-width: 840px;
  padding-top: 54px;
}
.prose h2 {
  margin: 60px 0 0;
  font-size: clamp(19px, 2.1vw, 25px);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: .01em;
  color: var(--ink-900);
  scroll-margin-top: calc(var(--nav-h) + 28px);
}
.prose > h2:first-child { margin-top: 0; }

.prose h2 .num {
  margin-right: 12px;
  font-family: var(--font-serif);
  font-size: .74em;
  font-weight: 400;
  color: var(--violet-400);
}

.prose h3 {
  margin: 36px 0 0;
  font-size: 16.5px;
  font-weight: 600;
  color: var(--ink-800);
}

.prose p {
  margin-top: 18px;
  font-size: 15px;
  line-height: 2.05;
  color: var(--ink-500);
}

.prose strong { font-weight: 600; color: var(--ink-800); }

.prose ul,
.prose ol {
  display: grid;
  gap: 11px;
  margin-top: 18px;
  list-style: none;
  padding: 0;
}
.prose li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--ink-500);
}
.prose ul > li::before {
  content: "";
  position: absolute;
  left: 4px; top: 11px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--violet-400);
}
.prose ol { counter-reset: prose-ol; }
.prose ol > li { counter-increment: prose-ol; padding-left: 30px; }
.prose ol > li::before {
  content: counter(prose-ol);
  position: absolute;
  left: 0; top: 2px;
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--violet-500);
}

.prose a {
  color: var(--violet-700);
  border-bottom: 1px solid rgba(162, 145, 214, .35);
  transition: color .4s var(--ease), border-color .4s var(--ease);
}
.prose a:hover { color: var(--violet-500); border-bottom-color: var(--violet-500); }

.prose blockquote {
  margin-top: 30px;
  padding: 22px 28px;
  border-radius: var(--r-md);
  border-left: 2px solid var(--violet-400);
  background: rgba(255, 255, 255, .74);
  box-shadow: var(--sh-1);
}
.prose blockquote p { margin-top: 0; font-size: 14.5px; }
.prose blockquote p + p { margin-top: 10px; }

/* 页内目录 */
.toc {
  margin-top: 40px;
  padding: 26px 30px;
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, .76);
  border: 1px solid var(--hair-light);
  box-shadow: var(--sh-1);
}
.toc__title {
  margin-bottom: 16px;
  font-family: var(--font-serif);
  font-size: 11.5px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--ink-400);
}
.toc ol {
  display: grid;
  gap: 10px;
  counter-reset: toc;
  list-style: none;
  padding: 0;
}
.toc li { counter-increment: toc; }
.toc a {
  display: flex;
  gap: 12px;
  font-size: 14px;
  color: var(--ink-700);
  transition: color .4s var(--ease);
}
.toc a::before {
  content: counter(toc, decimal-leading-zero);
  font-family: var(--font-serif);
  font-size: 12px;
  color: var(--violet-400);
}
.toc a:hover { color: var(--violet-700); }

/* 功能卡片网格 */
.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 34px;
}
.cards__item {
  padding: 30px 28px;
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, .84);
  border: 1px solid var(--hair-light);
  box-shadow: var(--sh-1);
  transition: transform .55s var(--ease-out), box-shadow .55s var(--ease-out),
              border-color .55s var(--ease);
}
.cards__item:hover {
  transform: translateY(-5px);
  border-color: rgba(162, 145, 214, .32);
  box-shadow: var(--sh-2);
}
.cards__item h3 { margin: 0 0 12px; font-size: 16.5px; }
.cards__item p { margin-top: 0; font-size: 14px; line-height: 1.9; }
.cards__item ul { margin-top: 16px; gap: 8px; }
.cards__item li { font-size: 13.5px; }

/* 信息量表（联系/公司信息） */
.info-list {
  display: grid;
  margin-top: 30px;
  border-top: 1px solid var(--hair);
}
.info-list__row {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--hair);
}
.info-list__row dt {
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--ink-400);
}
.info-list__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-800);
}
.info-list__row dd a {
  color: var(--violet-700);
  border-bottom: 1px solid rgba(162, 145, 214, .35);
  transition: color .4s var(--ease), border-color .4s var(--ease);
}
.info-list__row dd a:hover { color: var(--violet-500); border-bottom-color: var(--violet-500); }
.info-list__row .is-dim { font-size: 13px; color: var(--ink-400); }

/* FAQ */
.faq {
  display: grid;
  gap: 14px;
  margin-top: 30px;
}
.faq__item {
  padding: 20px 26px;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, .84);
  border: 1px solid var(--hair-light);
  box-shadow: var(--sh-1);
  transition: border-color .5s var(--ease), box-shadow .5s var(--ease);
}
.faq__item[open] {
  border-color: rgba(162, 145, 214, .3);
  box-shadow: var(--sh-2);
}
.faq__item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 500;
  color: var(--ink-900);
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: "";
  flex: 0 0 auto;
  width: 7px; height: 7px;
  border-right: 1.5px solid var(--violet-500);
  border-bottom: 1.5px solid var(--violet-500);
  transform: rotate(45deg) translateY(-2px);
  transition: transform .45s var(--ease);
}
.faq__item[open] summary::after { transform: rotate(-135deg) translateY(-2px); }
.faq__item p { margin-top: 14px; }

/* 页面底部相关导航 */
.page-nav {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 72px;
  padding-top: 40px;
  border-top: 1px solid var(--hair);
}
.page-nav__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 20px 24px;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, .8);
  border: 1px solid var(--hair-light);
  box-shadow: var(--sh-1);
  font-size: 14.5px;
  color: var(--ink-800);
  transition: transform .5s var(--ease), box-shadow .5s var(--ease), color .5s var(--ease);
}
.page-nav__item::after {
  content: "";
  flex: 0 0 auto;
  width: 7px; height: 7px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(-45deg);
  opacity: .55;
  transition: transform .5s var(--ease);
}
.page-nav__item:hover {
  transform: translateY(-3px);
  color: var(--violet-700);
  box-shadow: var(--sh-2);
}
.page-nav__item:hover::after { transform: rotate(-45deg) translateX(3px); }

/* CTA 条 */
.page-cta {
  position: relative;
  margin-top: 72px;
  padding: 52px 44px;
  border-radius: var(--r-xl);
  overflow: hidden;
  text-align: center;
  background:
    radial-gradient(70% 120% at 50% 0%, rgba(226, 216, 244, .8) 0%, rgba(240, 234, 250, .5) 46%, rgba(255, 255, 255, .76) 100%);
  border: 1px solid var(--hair-light);
  box-shadow: var(--sh-3);
}
.page-cta h2 {
  margin: 0;
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 600;
  color: var(--ink-900);
}
.page-cta p {
  margin-top: 14px;
  font-size: 14.5px;
  color: var(--ink-500);
}
.page-cta .page-cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-top: 30px;
}

/* 二级页内的手机示意图 */
.page-figure {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 48px 0 10px;
}
.page-figure .phone {
  flex: 0 0 auto;
  width: 268px;
  max-width: 100%;
}
.page-figure figcaption {
  max-width: 30em;
  margin-top: 22px;
  font-size: 13px;
  line-height: 1.8;
  text-align: center;
  color: var(--ink-400);
}

/* 404 */
/* 位于 .page 之内，不再重复叠加顶部内边距 */
.notfound {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 58svh;
  padding: 32px 0 40px;
  text-align: center;
}
.notfound__code {
  font-family: var(--font-serif);
  font-size: clamp(80px, 16vw, 180px);
  line-height: .9;
  letter-spacing: .04em;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.notfound h1 {
  margin-top: 18px;
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 600;
  color: var(--ink-900);
}
.notfound p {
  max-width: 34em;
  margin-top: 16px;
  font-size: 15px;
  color: var(--ink-500);
}
.notfound__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-top: 34px;
}
.notfound__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 22px;
  margin-top: 42px;
  padding-top: 30px;
  border-top: 1px solid var(--hair);
  font-size: 13.5px;
  color: var(--ink-400);
}
.notfound__links a { transition: color .4s var(--ease); }
.notfound__links a:hover { color: var(--violet-700); }

/* 二级页响应式 */
@media (max-width: 980px) {
  .page { padding: calc(var(--nav-h) + 68px) 0 88px; }
  .page-head { padding-bottom: 34px; }
  .prose { padding-top: 40px; }
  .prose h2 { margin-top: 46px; }
  .cards { grid-template-columns: 1fr; }
  .info-list__row { grid-template-columns: 1fr; gap: 6px; }
  .page-nav { margin-top: 56px; }
  .page-cta { padding: 42px 28px; margin-top: 56px; }
}

@media (max-width: 720px) {
  .page { padding: calc(var(--nav-h) + 52px) 0 72px; }
  .breadcrumb { margin-bottom: 20px; font-size: 12px; }
  .page-head__lead { font-size: 15px; }
  .prose p { font-size: 14.5px; line-height: 1.95; }
  .toc { padding: 22px 22px; }
  .cards__item { padding: 24px 22px; }
  .faq__item { padding: 18px 20px; }
  .page-cta .page-cta__actions { flex-direction: column; align-items: stretch; }
  .page-cta .page-cta__actions .btn { width: 100%; }
  .notfound__actions { flex-direction: column; align-items: stretch; width: 100%; max-width: 320px; }
  .notfound__actions .btn { width: 100%; }
}

/* =========================================================================
   20 图片灯箱（界面墙与首屏截图点击放大）
   ========================================================================= */

/* 可点击提示：右下角展开图标 */
.shot { cursor: zoom-in; }
.shot__body,
.phone--hero .phone__body { position: relative; }
.phone--hero .phone__body { cursor: zoom-in; }

.shot__body::after,
.phone--hero .phone__body::after {
  content: "";
  position: absolute;
  right: 15px; bottom: 15px;
  width: 28px; height: 28px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, .94);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%235c5670' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 2H2v4M10 14h4v-4M2 10v4h4M14 6V2h-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 13px;
  box-shadow: 0 4px 14px rgba(60, 45, 100, .22);
  opacity: 0;
  transform: scale(.85);
  transition: opacity .4s var(--ease), transform .4s var(--ease);
  pointer-events: none;
  z-index: 3;
}
.shot:hover .shot__body::after,
.shot:focus-visible .shot__body::after,
.phone--hero .phone__body:hover::after { opacity: 1; transform: none; }

.shot__body:focus-visible,
.phone--hero .phone__body:focus-visible {
  outline: 2px solid var(--violet-500);
  outline-offset: 4px;
  border-radius: 28px;
}

/* 灯箱主体 */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
  background: rgba(34, 28, 50, .66);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  opacity: 0;
  visibility: hidden;
  transition: opacity .4s var(--ease), visibility .4s;
}
.lightbox.is-open { opacity: 1; visibility: visible; }

.lightbox__figure {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 0;
  transform: scale(.965) translateY(12px);
  transition: transform .5s var(--ease-out);
}
.lightbox.is-open .lightbox__figure { transform: none; }

.lightbox__img {
  display: block;
  width: auto;
  height: auto;
  max-width: min(96vw, 520px);
  max-height: 78vh;
  border-radius: 30px;
  background: #f8f5fd;
  box-shadow: 0 40px 90px rgba(18, 12, 36, .5), 0 0 0 1px rgba(255, 255, 255, .18);
}

.lightbox__cap {
  margin-top: 18px;
  font-size: 13.5px;
  letter-spacing: .08em;
  color: rgba(255, 255, 255, .8);
}

.lightbox__close {
  position: absolute;
  top: -14px; right: -14px;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .95);
  color: var(--ink-800);
  box-shadow: 0 10px 26px rgba(18, 12, 36, .32);
  transition: transform .45s var(--ease), background-color .45s var(--ease);
}
.lightbox__close svg {
  width: 15px; height: 15px;
  fill: none; stroke: currentColor;
  stroke-width: 1.8; stroke-linecap: round;
}
.lightbox__close:hover { transform: rotate(90deg) scale(1.06); color: var(--violet-700); }

/* 灯箱打开时锁定页面滚动 */
body.is-locked { overflow: hidden; }

@media (hover: none) {
  /* 触屏无 hover，常驻提示 */
  .shot__body::after,
  .phone--hero .phone__body::after { opacity: .92; transform: none; }
}

@media (max-width: 720px) {
  .lightbox { padding: 24px 16px; }
  .lightbox__img { max-height: 72vh; border-radius: 24px; }
  .lightbox__close { top: -8px; right: -4px; width: 36px; height: 36px; }
  .lightbox__cap { margin-top: 14px; font-size: 12.5px; }
}

/* 无障碍：减少动效 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .marquee__track { animation: none; }
  .ambient__blob { animation: none; }
}