/* ==========================================================
   翡钰纪 FEIYUJI — 企业官网样式系统
   设计语言：Apple 式 —— 白底 / 黑字 / 苹果蓝，无衬线，大圆角
   ========================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  --ink-deep:   #1d1d1f;
  --ink:        #1d1d1f;
  --bg:         #fbfbfd;
  --surface:    #ffffff;
  --surface-2:  #f5f5f7;
  --line:       #d2d2d7;
  --line-soft:  #e8e8ed;
  --text:       #1d1d1f;
  --muted:      #6e6e73;
  --muted-2:    #86868b;
  --accent:     #0071e3;
  --accent-lt:  #2997ff;
  --accent-soft:#e8f2fd;

  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
               "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
               "Helvetica Neue", Arial, sans-serif;
  --font-display: var(--font-sans);

  --wrap: 1120px;
  --pad: clamp(20px, 5vw, 44px);
  --gap-section: clamp(72px, 9vw, 132px);

  --ease: cubic-bezier(.28, .11, .32, 1);
  --r-sm: 10px;
  --r-md: 18px;
  --r-lg: 26px;
  --shadow-s: 0 2px 10px rgba(0, 0, 0, .05);
  --shadow-m: 0 8px 30px rgba(0, 0, 0, .08);
  --shadow-l: 0 20px 56px rgba(0, 0, 0, .12);
}

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

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  letter-spacing: -.005em;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.14;
  margin: 0;
  letter-spacing: -.02em;
}

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

a { color: inherit; text-decoration: none; }

ul, ol { margin: 0; padding: 0; list-style: none; }

::selection { background: rgba(0, 113, 227, .18); color: var(--ink); }

/* ---------- 3. 版心与通用 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding-inline: var(--pad);
}

.section { padding-block: var(--gap-section); position: relative; }
.section--tight { padding-block: clamp(56px, 6vw, 88px); }
.section--paper { background: var(--surface); }
.section--cream { background: var(--surface-2); }

/* 小标签 */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--accent);
  margin-bottom: 18px;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1.5px;
  background: currentColor;
  opacity: .55;
  border-radius: 2px;
}
.section--dark .eyebrow { color: var(--accent-lt); }

/* 标题组 */
.section-head { max-width: 720px; margin-bottom: clamp(38px, 4.6vw, 60px); }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head--center .eyebrow { justify-content: center; }
.section-head h2 {
  font-size: clamp(30px, 3.8vw, 46px);
  letter-spacing: -.025em;
  line-height: 1.1;
}
.section-head p {
  margin-top: 16px;
  color: var(--muted);
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.7;
}
.section--dark .section-head h2 { color: #f5f5f7; }
.section--dark .section-head p { color: rgba(255, 255, 255, .62); }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -.01em;
  border: 1px solid transparent;
  border-radius: 980px;
  cursor: pointer;
  transition: background .25s var(--ease), color .25s var(--ease),
              border-color .25s var(--ease), transform .25s var(--ease),
              box-shadow .25s var(--ease);
  white-space: nowrap;
}
.btn svg { flex: none; }

.btn--gold,
.btn--primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn--gold:hover,
.btn--primary:hover {
  background: #0077ed;
  border-color: #0077ed;
  box-shadow: 0 8px 24px rgba(0, 113, 227, .28);
}

.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn--ghost:hover {
  background: rgba(0, 0, 0, .04);
  border-color: #b9b9c0;
}

.btn--ghost-lt {
  background: transparent;
  color: #f5f5f7;
  border-color: rgba(255, 255, 255, .3);
}
.btn--ghost-lt:hover {
  background: rgba(255, 255, 255, .1);
  border-color: rgba(255, 255, 255, .6);
}

/* 深色区块 */
.section--dark {
  background: var(--ink-deep);
  color: #f5f5f7;
  overflow: hidden;
}
.section--dark::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 55% at 18% 12%, rgba(0, 113, 227, .16), transparent 65%),
    radial-gradient(ellipse 46% 46% at 86% 88%, rgba(41, 151, 255, .09), transparent 68%);
  pointer-events: none;
}

/* 入场动画 */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
  will-change: opacity, transform;
}
.reveal.is-in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .08s; }
.reveal[data-delay="2"] { transition-delay: .16s; }
.reveal[data-delay="3"] { transition-delay: .24s; }
.reveal[data-delay="4"] { transition-delay: .32s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: .001s !important; }
}

/* ==========================================================
   4. 页头导航
   ========================================================== */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background .3s var(--ease), box-shadow .3s var(--ease),
              border-color .3s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 72px;
  transition: height .3s var(--ease);
}
.site-header.is-stuck {
  background: rgba(255, 255, 255, .72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom-color: rgba(0, 0, 0, .08);
}
.site-header.is-stuck .site-header__inner { height: 60px; }

/* Logo */
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: none;
}
.logo__mark {
  width: 34px;
  height: 34px;
  flex: none;
  color: var(--ink);
  transition: transform .5s var(--ease);
}
.logo:hover .logo__mark { transform: rotate(-8deg); }
.logo__text { display: flex; flex-direction: column; line-height: 1.1; }
.logo__cn {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--ink);
}
.logo__en {
  font-size: 9px;
  font-weight: 500;
  letter-spacing: .28em;
  color: var(--muted-2);
  margin-top: 3px;
}

/* 主导航 */
.nav { display: flex; align-items: center; gap: 2px; }
.nav__link {
  position: relative;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 400;
  letter-spacing: -.005em;
  color: rgba(29, 29, 31, .82);
  transition: color .25s var(--ease);
}
.nav__link:hover { color: var(--accent); }
.nav__link.is-active { color: var(--accent); font-weight: 500; }

.header-cta { flex: none; }
.header-cta .btn { padding: 9px 20px; font-size: 13.5px; }

/* 移动端汉堡 */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 0;
  flex: none;
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--ink);
  position: relative;
  border-radius: 2px;
  transition: background .3s var(--ease);
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 1.5px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform .35s var(--ease), top .35s var(--ease);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after  { top: 6px; }

.nav-toggle.is-open span { background: transparent; }
.nav-toggle.is-open span::before { top: 0; transform: rotate(45deg); }
.nav-toggle.is-open span::after  { top: 0; transform: rotate(-45deg); }

/* ==========================================================
   5. 首页 Hero
   ========================================================== */
.hero {
  position: relative;
  min-height: 88svh;
  display: flex;
  align-items: center;
  padding-block: 116px 80px;
  background: var(--bg);
  color: var(--ink);
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero__bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 62% 58% at 88% 42%, rgba(0, 113, 227, .10), transparent 66%),
    radial-gradient(ellipse 54% 50% at 8% 88%, rgba(41, 151, 255, .07), transparent 68%),
    linear-gradient(180deg, #ffffff 0%, #fbfbfd 55%, #f5f5f7 100%);
}

/* 玉璧装饰环 */
.hero__ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, .07);
  pointer-events: none;
}
.hero__ring--1 {
  width: min(700px, 76vw);
  aspect-ratio: 1;
  right: -15%;
  top: 50%;
  transform: translateY(-50%);
}
.hero__ring--2 {
  width: min(450px, 52vw);
  aspect-ratio: 1;
  right: -6%;
  top: 50%;
  transform: translateY(-50%);
  border-color: rgba(0, 0, 0, .05);
}
.hero__ring--3 {
  position: absolute;
  width: min(140px, 18vw);
  aspect-ratio: 1;
  right: 9%;
  top: 15%;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, .06);
  pointer-events: none;
}
.hero__ring--3::after {
  content: "";
  position: absolute;
  inset: 6%;
  border-radius: 50%;
  background: radial-gradient(circle at 36% 32%, rgba(41, 151, 255, .30), rgba(0, 113, 227, .06) 58%, transparent 72%);
  filter: blur(2px);
}

.hero__inner { position: relative; z-index: 2; width: 100%; }
.hero__content { max-width: 720px; }

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 16px 6px 13px;
  border: 1px solid var(--line);
  border-radius: 980px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: -.005em;
  color: var(--muted);
  background: rgba(255, 255, 255, .7);
  margin-bottom: 26px;
}
.hero__badge i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 113, 227, .14);
}

.hero h1 {
  font-size: clamp(40px, 5.8vw, 74px);
  line-height: 1.06;
  letter-spacing: -.035em;
  font-weight: 600;
  margin-bottom: 22px;
}
.hero h1 em {
  font-style: normal;
  color: var(--accent);
}

.hero__desc {
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.62;
  color: var(--muted);
  max-width: 560px;
  margin-bottom: 34px;
}

.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* Hero 数据条 */
.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(24px, 3vw, 46px);
  margin-top: clamp(40px, 4.4vw, 58px);
  padding-top: 28px;
  max-width: 860px;
  border-top: 1px solid var(--line);
}
.hero__stat dt {
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 600;
  letter-spacing: -.02em;
  color: var(--ink);
  line-height: 1.1;
}
.hero__stat dd {
  margin: 6px 0 0;
  font-size: 13.5px;
  letter-spacing: -.005em;
  color: var(--muted);
}

/* 滚动提示 */
.hero__scroll {
  position: absolute;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .22em;
  color: var(--muted-2);
}
.hero__scroll::after {
  content: "";
  width: 1px;
  height: 36px;
  background: linear-gradient(var(--line), transparent);
  animation: scrollHint 2.4s var(--ease) infinite;
}
@keyframes scrollHint {
  0%   { transform: scaleY(.15); transform-origin: top; opacity: 0; }
  40%  { transform: scaleY(1);   transform-origin: top; opacity: 1; }
  100% { transform: scaleY(1);   transform-origin: bottom; opacity: 0; }
}

/* ==========================================================
   6. 承诺条
   ========================================================== */
.pledge {
  background: var(--surface);
  border-bottom: 1px solid var(--line-soft);
}
.pledge__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line-soft);
}
.pledge__item {
  background: var(--surface);
  padding: clamp(28px, 3.4vw, 42px) clamp(20px, 2.4vw, 30px);
  display: flex;
  gap: 14px;
  align-items: flex-start;
  transition: background .3s var(--ease);
}
.pledge__item:hover { background: var(--surface-2); }
.pledge__icon {
  width: 26px;
  height: 26px;
  flex: none;
  color: var(--accent);
  margin-top: 1px;
}
.pledge__title {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -.01em;
  margin-bottom: 5px;
}
.pledge__text {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
}

/* ==========================================================
   7. 品牌介绍（双栏）
   ========================================================== */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: center;
}
.split--reverse .split__media { order: 2; }

.split__media { position: relative; }
.split__frame {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--surface-2);
  box-shadow: var(--shadow-m);
}
.split__frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}
.split__deco {
  position: absolute;
  right: -22px;
  bottom: -22px;
  width: clamp(90px, 12vw, 140px);
  aspect-ratio: 1;
  color: var(--accent);
  opacity: .2;
  pointer-events: none;
}

.split__body h2 {
  font-size: clamp(28px, 3.4vw, 42px);
  letter-spacing: -.028em;
  margin-bottom: 20px;
}
.split__body > p {
  color: var(--muted);
  font-size: 16.5px;
  line-height: 1.72;
  margin-bottom: 16px;
}

/* 要点列表 */
.check-list { margin-top: 30px; display: grid; gap: 18px; }
.check-list li {
  display: flex;
  gap: 13px;
  align-items: flex-start;
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--text);
}
.check-list svg {
  flex: none;
  width: 19px;
  height: 19px;
  margin-top: 3px;
  color: var(--accent);
}
.check-list strong { font-weight: 600; }
.check-list span { color: var(--muted); }

/* ---------- 品牌字解卡片 ---------- */
.glyph-card {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: var(--r-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(26px, 4vw, 48px);
  background: linear-gradient(165deg, #2c2c2e 0%, #1d1d1f 62%, #131315 100%);
  box-shadow: var(--shadow-l);
  color: #f5f5f7;
}
.glyph-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 62% 46% at 22% 10%, rgba(41, 151, 255, .22), transparent 64%),
    radial-gradient(ellipse 48% 42% at 84% 92%, rgba(0, 113, 227, .14), transparent 66%);
  pointer-events: none;
}
.glyph-card__inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  flex: 1;
  padding-block: 10px;
}
.glyph {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(14px, 2.2vw, 22px);
  min-width: 0;
}
.glyph + .glyph { border-left: 1px solid rgba(255, 255, 255, .12); }
.glyph__char {
  font-size: clamp(40px, 5.6vw, 68px);
  line-height: 1;
  font-weight: 300;
  letter-spacing: .02em;
  color: #f5f5f7;
}
.glyph__note {
  font-size: 12px;
  line-height: 1.75;
  letter-spacing: -.005em;
  color: rgba(255, 255, 255, .48);
  text-align: center;
}
.glyph-card__foot {
  position: relative;
  z-index: 2;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, .12);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .22em;
  color: rgba(255, 255, 255, .5);
  text-align: center;
}

/* ---------- 企业铭牌卡片 ---------- */
.plaque {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  padding: clamp(28px, 4.2vw, 52px);
  box-shadow: var(--shadow-m);
  overflow: hidden;
}
.plaque__top {
  position: relative;
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .18em;
  color: var(--muted-2);
}
.plaque__body { position: relative; }
.plaque__body h3 {
  font-size: clamp(24px, 2.8vw, 32px);
  line-height: 1.3;
  letter-spacing: -.025em;
  margin: 22px 0 12px;
  color: var(--ink);
}
.plaque__en {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .12em;
  color: var(--muted-2);
  margin: 0;
}
.plaque__rule {
  height: 1px;
  background: var(--line-soft);
  margin: 26px 0 24px;
}
.plaque__meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 24px;
  margin: 0;
}
.plaque__meta div { display: flex; flex-direction: column; gap: 4px; }
.plaque__meta dt {
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--muted-2);
}
.plaque__meta dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.5;
  font-weight: 500;
  color: var(--text);
}
.plaque__seal {
  position: absolute;
  right: -10px;
  bottom: -30px;
  font-size: clamp(110px, 15vw, 170px);
  line-height: 1;
  font-weight: 700;
  color: rgba(0, 0, 0, .035);
  pointer-events: none;
  user-select: none;
}

/* ==========================================================
   8. 产品分类
   ========================================================== */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  overflow: hidden;
}
.cat-card {
  position: relative;
  background: var(--surface);
  padding: clamp(25px, 2.8vw, 34px) clamp(18px, 2vw, 24px);
  min-height: 170px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: background .3s var(--ease);
}
.cat-card__idx {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--muted-2);
  transition: color .3s var(--ease);
}
.cat-card__name {
  display: block;
  font-size: clamp(17px, 1.6vw, 19px);
  font-weight: 600;
  letter-spacing: -.015em;
  margin-bottom: 5px;
  transition: color .3s var(--ease);
}
.cat-card__sub {
  display: block;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--muted);
  transition: color .3s var(--ease);
}
.cat-card > span:last-child { display: block; }
.cat-card:hover { background: var(--surface-2); }
.cat-card:hover .cat-card__idx { color: var(--accent); }
.cat-card:hover .cat-card__name { color: var(--accent); }

/* ==========================================================
   9. APP 展示
   ========================================================== */
.app-showcase {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  gap: clamp(40px, 6vw, 76px);
  align-items: center;
}

.phones {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: clamp(10px, 1.6vw, 22px);
  padding-block: 20px;
}
.phone {
  position: relative;
  flex: none;
  width: clamp(120px, 15vw, 190px);
  border-radius: 26px;
  background: #000;
  padding: 6px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, .42), 0 0 0 1px rgba(255, 255, 255, .12);
  transition: transform .5s var(--ease);
}
.phone img {
  width: 100%;
  border-radius: 20px;
  display: block;
}
.phone--main {
  width: clamp(150px, 19vw, 236px);
  z-index: 2;
  transform: translateY(-14px);
}
.phone--side { opacity: .9; }
.phone--side:hover { opacity: 1; transform: translateY(-8px); }
.phone--main:hover { transform: translateY(-22px); }

.app-points { display: grid; gap: 0; margin-top: 6px; }
.app-point {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 18px;
  padding: 20px 0;
  border-top: 1px solid rgba(255, 255, 255, .1);
  align-items: start;
}
.app-point:last-child { border-bottom: 1px solid rgba(255, 255, 255, .1); }
.app-point__num {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--accent-lt);
  padding-top: 2px;
}
.app-point h4 {
  font-size: 17px;
  font-weight: 600;
  color: #f5f5f7;
  letter-spacing: -.012em;
  margin-bottom: 6px;
}
.app-point p {
  font-size: 14.5px;
  line-height: 1.65;
  color: rgba(255, 255, 255, .58);
  margin: 0;
}

/* ==========================================================
   10. 服务理念三栏
   ========================================================== */
.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 2.6vw, 28px);
}
.value-card {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  padding: clamp(28px, 3.2vw, 40px);
  display: flex;
  flex-direction: column;
  gap: 14px;
  height: 100%;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-m);
}
.value-card__icon {
  width: 34px;
  height: 34px;
  color: var(--accent);
  margin-bottom: 2px;
}
.value-card h3 {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -.015em;
}
.value-card p {
  font-size: 15px;
  line-height: 1.65;
  color: var(--muted);
  margin: 0;
}

/* ==========================================================
   11. 门店 / 联系
   ========================================================== */
.store {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: clamp(40px, 6vw, 76px);
  align-items: center;
}
.store__info dl {
  margin: 30px 0 0;
  display: grid;
  gap: 0;
}
.store__row {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 20px;
  padding: 17px 0;
  border-top: 1px solid var(--line-soft);
  align-items: baseline;
}
.store__row:last-child { border-bottom: 1px solid var(--line-soft); }
.store__row dt {
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--muted-2);
  font-weight: 500;
}
.store__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--text);
}

/* 地图样式卡片 */
.map-card {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--surface-2);
  border: 1px solid var(--line-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-m);
}
.map-card svg { width: 100%; height: 100%; }
.map-card__pin {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.map-card__pin i {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px rgba(0, 113, 227, .18), 0 0 0 11px rgba(0, 113, 227, .08);
  animation: pulse 2.6s var(--ease) infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 5px rgba(0, 113, 227, .18), 0 0 0 11px rgba(0, 113, 227, .07); }
  50%      { box-shadow: 0 0 0 8px rgba(0, 113, 227, .10), 0 0 0 17px rgba(0, 113, 227, .04); }
}
.map-card__label {
  position: absolute;
  left: 16px;
  bottom: 16px;
  right: 16px;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-sm);
  padding: 12px 16px;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--muted);
}
.map-card__label b {
  display: block;
  color: var(--ink);
  font-size: 13.5px;
  font-weight: 600;
  margin-bottom: 2px;
  letter-spacing: -.01em;
}

/* ==========================================================
   12. 行动号召
   ========================================================== */
.cta-band {
  position: relative;
  padding-block: clamp(64px, 7.5vw, 104px);
  background: var(--ink-deep);
  color: #f5f5f7;
  text-align: center;
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 58% 78% at 50% 0%, rgba(0, 113, 227, .18), transparent 70%),
    radial-gradient(ellipse 42% 58% at 82% 100%, rgba(41, 151, 255, .10), transparent 72%);
}
.cta-band__inner { position: relative; z-index: 2; }
.cta-band h2 {
  font-size: clamp(28px, 3.8vw, 46px);
  letter-spacing: -.028em;
  margin-bottom: 14px;
}
.cta-band p {
  color: rgba(255, 255, 255, .62);
  font-size: 17px;
  max-width: 640px;
  margin: 0 auto 30px;
  line-height: 1.6;
}
.cta-band__actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}

/* ==========================================================
   13. 页脚
   ========================================================== */
.site-footer {
  background: var(--surface-2);
  color: var(--muted);
  padding-block: clamp(52px, 6vw, 76px) 0;
  font-size: 13.5px;
  border-top: 1px solid var(--line-soft);
}
.footer__top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: clamp(32px, 4vw, 56px);
  padding-bottom: clamp(36px, 4.5vw, 52px);
  border-bottom: 1px solid var(--line);
}
.footer__brand .logo { margin-bottom: 16px; }
.footer__brand p {
  line-height: 1.7;
  color: var(--muted);
  max-width: 340px;
  font-size: 13px;
}
.footer__col h4 {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--ink);
  margin-bottom: 14px;
}
.footer__col li { margin-bottom: 10px; }
.footer__col a {
  transition: color .25s var(--ease);
  line-height: 1.6;
  display: inline-block;
}
.footer__col a:hover { color: var(--accent); }
.footer__col address {
  font-style: normal;
  line-height: 1.7;
  color: var(--muted);
}
.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  align-items: center;
  justify-content: space-between;
  padding-block: 22px;
  font-size: 12.5px;
  color: var(--muted-2);
}
.footer__bottom a:hover { color: var(--accent); }

/* 经营范围 */
.scope {
  border: 1px solid var(--line-soft);
  background: var(--surface);
  padding: clamp(24px, 3vw, 34px);
  border-radius: var(--r-md);
}
.scope h4 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--ink);
  margin: 0 0 12px;
}
.scope p {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
  margin: 0;
}

/* ==========================================================
   14. 内容页
   ========================================================== */
.page-hero {
  position: relative;
  padding-block: 150px clamp(52px, 6.5vw, 88px);
  background: var(--surface-2);
  color: var(--ink);
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 56% 70% at 88% 10%, rgba(0, 113, 227, .09), transparent 68%),
    linear-gradient(180deg, #ffffff 0%, #fbfbfd 100%);
}
.page-hero .wrap { position: relative; z-index: 2; }
.page-hero h1 {
  font-size: clamp(34px, 4.6vw, 56px);
  letter-spacing: -.035em;
  line-height: 1.06;
  font-weight: 600;
  margin-bottom: 16px;
}
.page-hero p {
  max-width: 620px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.65;
}

/* 面包屑 */
.crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--muted-2);
  margin-bottom: 22px;
}
.crumb a { transition: color .25s var(--ease); }
.crumb a:hover { color: var(--accent); }
.crumb i { font-style: normal; opacity: .6; }

/* 时间线 */
.timeline { position: relative; padding-left: 32px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--line);
}
.timeline li {
  position: relative;
  padding-bottom: 32px;
}
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: "";
  position: absolute;
  left: -32px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--accent);
}
.timeline time {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--accent);
  margin-bottom: 5px;
}
.timeline h4 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -.012em;
  margin-bottom: 5px;
}
.timeline p {
  font-size: 15px;
  line-height: 1.65;
  color: var(--muted);
  margin: 0;
}

/* 信息表 */
.info-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}
.info-table th,
.info-table td {
  text-align: left;
  padding: 15px 0;
  border-bottom: 1px solid var(--line-soft);
  vertical-align: top;
  line-height: 1.65;
}
.info-table th {
  width: 128px;
  font-weight: 500;
  font-size: 13px;
  color: var(--muted-2);
  padding-right: 24px;
}
.info-table tr:first-child th,
.info-table tr:first-child td { padding-top: 0; }
.info-table td { font-weight: 400; }

/* 功能列表 */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  overflow: hidden;
}
.feature-item {
  background: var(--surface);
  padding: clamp(24px, 3vw, 34px);
  display: flex;
  gap: 16px;
}
.feature-item svg {
  flex: none;
  width: 24px;
  height: 24px;
  color: var(--accent);
  margin-top: 2px;
}
.feature-item h4 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -.015em;
  margin-bottom: 6px;
}
.feature-item p {
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--muted);
  margin: 0;
}

/* 截图墙 */
.shots {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2.4vw, 26px);
}
.shot {
  border-radius: var(--r-md);
  overflow: hidden;
  background: #000;
  padding: 5px;
  box-shadow: 0 16px 44px rgba(0, 0, 0, .35), 0 0 0 1px rgba(255, 255, 255, .1);
  transition: transform .4s var(--ease);
}
.shot:hover { transform: translateY(-6px); }
.shot img {
  border-radius: 13px;
  width: 100%;
  aspect-ratio: 494 / 1014;
  object-fit: cover;
  object-position: top center;
}
.shot figcaption {
  text-align: center;
  font-size: 12.5px;
  color: rgba(255, 255, 255, .5);
  padding: 12px 4px 6px;
}

/* 联系卡片 */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(18px, 2.4vw, 26px);
}
.contact-card {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  padding: clamp(26px, 3vw, 34px);
  transition: box-shadow .3s var(--ease), transform .3s var(--ease);
}
.contact-card:hover { box-shadow: var(--shadow-m); transform: translateY(-3px); }
.contact-card svg {
  width: 24px;
  height: 24px;
  color: var(--accent);
  margin-bottom: 16px;
}
.contact-card h4 {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .01em;
  color: var(--muted-2);
  margin-bottom: 8px;
}
.contact-card p,
.contact-card a {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -.015em;
  color: var(--text);
  transition: color .25s var(--ease);
}
.contact-card a:hover { color: var(--accent); }
.contact-card small {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  font-weight: 400;
  color: var(--muted);
  line-height: 1.6;
}

/* ---------- 品类快跳 chips ---------- */
.chips {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}
.chips::-webkit-scrollbar { height: 3px; }
.chips::-webkit-scrollbar-thumb { background: var(--line); border-radius: 3px; }
.chip {
  flex: none;
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 980px;
  font-size: 13.5px;
  color: var(--ink);
  background: var(--surface);
  transition: color .25s var(--ease), border-color .25s var(--ease),
              background .25s var(--ease);
}
.chip:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}

/* ---------- 品类详解列表 ---------- */
.cat-list { border-top: 1px solid var(--line-soft); }

.cat-row {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr) 250px;
  gap: clamp(20px, 3vw, 44px);
  padding: clamp(28px, 3.4vw, 42px) 0;
  border-bottom: 1px solid var(--line-soft);
  align-items: start;
  scroll-margin-top: 88px;
}
.cat-row__num {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--muted-2);
  padding-top: 6px;
}
.cat-row__main h3 {
  font-size: clamp(20px, 2.1vw, 25px);
  letter-spacing: -.022em;
  margin-bottom: 10px;
}
.cat-row__main p {
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--muted);
  margin-bottom: 16px;
  max-width: 560px;
}
.tag-list { display: flex; flex-wrap: wrap; gap: 7px; }
.tag-list li {
  font-size: 12.5px;
  padding: 4px 12px;
  border: 1px solid var(--line-soft);
  border-radius: 980px;
  color: var(--muted);
  background: var(--surface);
}
.cat-row__note {
  border-left: 1px solid var(--line-soft);
  padding-left: 22px;
}
.cat-row__note span {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 7px;
}
.cat-row__note p {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--muted);
  margin: 0;
}

/* ---------- 选购指南 ---------- */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(20px, 3vw, 34px);
  position: relative;
  z-index: 2;
}
.guide-item {
  border-top: 1px solid rgba(255, 255, 255, .18);
  padding-top: 20px;
}
.guide-item__num {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--accent-lt);
  margin-bottom: 10px;
}
.guide-item h4 {
  font-size: 17px;
  font-weight: 600;
  color: #f5f5f7;
  letter-spacing: -.015em;
  margin-bottom: 8px;
}
.guide-item p {
  font-size: 14px;
  line-height: 1.65;
  color: rgba(255, 255, 255, .58);
  margin: 0;
}

/* ---------- APP 主视觉展示台 ---------- */
.app-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(26px, 4vw, 46px);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: linear-gradient(165deg, #f5f5f7 0%, #ebebf0 100%);
}
.app-visual::before {
  content: "";
  position: absolute;
  width: 76%;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, .05);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}
.app-visual::after {
  content: "";
  position: absolute;
  width: 54%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, .95), rgba(255, 255, 255, 0) 68%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}
.app-visual .phone {
  position: relative;
  z-index: 2;
  width: min(232px, 100%);
}
.app-visual .phone--main {
  width: min(248px, 100%);
  transform: none;
}
.app-visual .phone:hover { transform: translateY(-8px); }
.app-visual--compact .phone { width: min(210px, 100%); }

/* ---------- 获取方式列表 ---------- */
.get-list { margin-top: 32px; display: grid; }
.get-row {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 20px;
  padding: 17px 0;
  border-top: 1px solid var(--line-soft);
  align-items: baseline;
}
.get-row:last-child { border-bottom: 1px solid var(--line-soft); }
.get-row__tag {
  font-size: 12.5px;
  color: var(--muted-2);
  font-weight: 500;
}
.get-row p {
  font-size: 15px;
  line-height: 1.65;
  color: var(--muted);
  margin: 0;
}

/* ---------- 常见问题折叠 ---------- */
.faq { border-top: 1px solid var(--line-soft); margin-top: 8px; }
.faq__item { border-bottom: 1px solid var(--line-soft); }
.faq__item summary {
  list-style: none;
  cursor: pointer;
  position: relative;
  padding: 20px 44px 20px 0;
  font-size: clamp(16px, 1.6vw, 18px);
  font-weight: 500;
  letter-spacing: -.012em;
  color: var(--text);
  transition: color .25s var(--ease);
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: "";
  position: absolute;
  right: 12px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-right: 1.5px solid var(--muted-2);
  border-bottom: 1.5px solid var(--muted-2);
  transform: translateY(-70%) rotate(45deg);
  transition: transform .3s var(--ease);
}
.faq__item:hover summary { color: var(--accent); }
.faq__item[open] summary { color: var(--accent); }
.faq__item[open] summary::after {
  border-color: var(--accent);
  transform: translateY(-25%) rotate(225deg);
}
.faq__body {
  padding: 0 44px 22px 0;
  animation: faqIn .28s var(--ease);
}
@keyframes faqIn {
  from { opacity: 0; transform: translateY(-3px); }
  to   { opacity: 1; transform: none; }
}
.faq__body p {
  font-size: 15.5px;
  line-height: 1.72;
  color: var(--muted);
  margin: 0;
  max-width: 760px;
}

/* ==========================================================
   15. 响应式
   ========================================================== */
@media (max-width: 1080px) {
  .cat-row { grid-template-columns: 48px minmax(0, 1fr); gap: 18px 24px; }
  .cat-row__note {
    grid-column: 2;
    border-left: 0;
    border-top: 1px solid var(--line-soft);
    padding-left: 0;
    padding-top: 14px;
  }
  .guide-grid { grid-template-columns: repeat(2, 1fr); gap: 26px; }
}

@media (max-width: 1024px) {
  .cat-grid { grid-template-columns: repeat(3, 1fr); }
  .footer__top { grid-template-columns: 1fr 1fr; }
  .app-showcase { grid-template-columns: 1fr; }
  .phones { order: 2; margin-top: 20px; }
  .split { grid-template-columns: 1fr; }
  .split--reverse .split__media { order: 0; }
  .split__frame { aspect-ratio: 16 / 10; }
  .split__deco { display: none; }
  .store { grid-template-columns: 1fr; }
  .map-card { aspect-ratio: 16 / 10; }
  .glyph-card { aspect-ratio: 16 / 9; }
  .glyph-card__inner { padding-block: 0; }
  .glyph__char { font-size: clamp(38px, 6.4vw, 58px); }
}

@media (max-width: 860px) {
  .nav { display: none; }
  .nav-toggle { display: flex; }
  .header-cta { display: none; }

  .pledge__grid { grid-template-columns: 1fr 1fr; }
  .value-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }

  /* 移动端抽屉导航：absolute + 100svh 规避 header 的 backdrop-filter 包含块问题 */
  .nav.is-open {
    display: flex;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100vh;
    height: 100svh;
    flex-direction: column;
    align-items: stretch;
    justify-content: center;
    gap: 0;
    padding: 92px 28px 40px;
    background: var(--bg);
    z-index: 99;
    overflow-y: auto;
    animation: navIn .3s var(--ease);
  }
  @keyframes navIn {
    from { opacity: 0; transform: translateY(-6px); }
    to   { opacity: 1; transform: none; }
  }
  .nav.is-open .nav__link {
    padding: 17px 0;
    font-size: 21px;
    font-weight: 500;
    letter-spacing: -.02em;
    color: var(--ink);
    border-bottom: 1px solid var(--line-soft);
  }
  .nav.is-open .nav__link.is-active { color: var(--accent); }
  .site-header .logo,
  .site-header .nav-toggle { position: relative; z-index: 101; }
  body.nav-locked .site-header {
    background: transparent;
    border-bottom-color: transparent;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
  body.nav-locked { overflow: hidden; }
}

@media (max-width: 640px) {
  :root { --gap-section: 64px; }

  .hero { min-height: auto; padding-block: 116px 68px; }
  .hero__ring--1, .hero__ring--2 { display: none; }
  .hero__ring--3 { display: none; }
  .hero__scroll { display: none; }
  .hero__stats { gap: 22px 36px; }
  .hero__stat dt { font-size: 21px; }
  .hero__actions .btn { flex: 1 1 auto; }

  .pledge__grid { grid-template-columns: 1fr; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .cat-card { min-height: 136px; padding: 20px 16px; }
  .cat-card__name { font-size: 16px; }
  .shots { grid-template-columns: 1fr; max-width: 320px; margin-inline: auto; }

  .footer__top { grid-template-columns: 1fr; gap: 30px; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }

  .phones { gap: 8px; }
  .phone--side { display: none; }
  .phone--main { width: 200px; }

  .store__row { grid-template-columns: 1fr; gap: 4px; }
  .info-table th { width: 92px; font-size: 12px; }
  .info-table td { font-size: 14px; }

  .glyph-card { aspect-ratio: auto; padding: 26px 16px 20px; }
  .glyph__char { font-size: 38px; }
  .glyph__note { font-size: 11px; }
  .glyph-card__foot { font-size: 9px; letter-spacing: .14em; }

  .cat-row { grid-template-columns: 1fr; gap: 10px; padding-block: 26px; }
  .cat-row__num { padding-top: 0; }
  .cat-row__note { grid-column: 1; }
  .guide-grid { grid-template-columns: 1fr; gap: 22px; }
  .plaque__meta { grid-template-columns: 1fr; gap: 16px; }
  .chips { margin-inline: calc(var(--pad) * -1); padding-inline: var(--pad); }
}