/* =====================================================================
   宏脉客云 · hmccloud.com
   设计语言「云舞青」：清透留白底 + 深松石绿 + teal（对标 2026 年度色
   Pantone「Cloud Dancer」）。建立在一套设计令牌（CSS 变量）之上，
   阴影 / 玻璃态 / 描边 / 深色版块文字等派生色由 color-mix 自动适配。
   ===================================================================== */

/* ---------- 自托管字体（子集化，避免依赖 Google Fonts，中国大陆可靠加载） ---------- */
@font-face{
  font-family:'HMC Serif';
  src:url('../fonts/hmc-serif.woff2') format('woff2');
  font-weight:400 700;
  font-style:normal;
  font-display:swap;
}

/* ---------- Design Tokens（设计语言：云舞青） ---------- */
:root{
  /* 色彩 — 基础调色板，派生色用 color-mix 自适应 */
  --bg:#F2F4F3;
  --bg-2:#E7ECEA;
  --surface:#FFFFFF;
  --surface-2:#FAFCFB;
  --ink:#1B2623;
  --ink-soft:#56625E;
  --ink-mute:#919C98;
  --brand:#134E48;
  --brand-deep:#0E3B37;
  --brand-soft:#2C6E66;
  --accent:#0E867A;
  --accent-soft:#62B9AE;
  --line:#E2E8E6;
  --line-strong:#CFD9D6;
  --on-brand:#F2F6F4;            /* 位于 brand / 深色版块之上的浅色文字、图标 */

  /* 字体 */
  --font-serif:'HMC Serif',Georgia,'Songti SC','Noto Serif CJK SC',serif;
  --font-sans:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei','Hiragino Sans GB','Noto Sans CJK SC',sans-serif;
  --font-display:var(--font-serif);   /* 标题字体，可整体切换衬线 / 无衬线 */

  /* 圆角 */
  --r-lg:22px;
  --r-md:14px;
  --r-sm:9px;

  /* 阴影（克制，随 --ink 自适应主题） */
  --shadow-soft:0 18px 44px -28px color-mix(in srgb,var(--ink) 30%,transparent);
  --shadow-lift:0 30px 70px -36px color-mix(in srgb,var(--ink) 42%,transparent);

  /* 节奏 */
  --section-y:clamp(72px,9vw,128px);
  --container:1240px;

  --ease:cubic-bezier(.22,.61,.36,1);
}

/* 英文页：标题改用拉丁文衬线（Georgia），中文品牌字仍走 HMC Serif 子集 */
html[lang="en"]{
  --font-serif:Georgia,'HMC Serif','Songti SC','Noto Serif CJK SC',serif;
}
/* 英文单词较长：Hero 文案列加宽、主标题略收字号，保证两行落位 */
html[lang="en"] .hero__inner{grid-template-columns:1fr .92fr}
html[lang="en"] .hero__title{font-size:clamp(2.15rem,3.8vw,3rem);line-height:1.18}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  font-family:var(--font-sans);
  background:var(--bg);
  color:var(--ink);
  font-size:17px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,select{font-family:inherit;font-size:inherit}
::selection{background:var(--brand);color:var(--on-brand)}

/* 换肤时平滑过渡 */
body,.site-header,.card,.feat,.case,.btn,.field input,.field select,
.app-shot,.float-card,.lead-form,.floating__btn{
  transition:background-color .4s var(--ease),border-color .4s var(--ease),color .4s var(--ease);
}

/* ---------- Layout helpers ---------- */
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:clamp(20px,5vw,52px)}
.section{padding-block:var(--section-y)}
.section--alt{background:linear-gradient(180deg,var(--bg) 0%,var(--bg-2) 100%)}
section[id]{scroll-margin-top:88px}

/* ---------- Typography ---------- */
h1,h2,h3,h4{font-family:var(--font-display);font-weight:600;line-height:1.28;letter-spacing:.01em;text-wrap:balance}
h2{font-size:clamp(1.95rem,3.4vw,2.85rem);color:var(--ink)}
h3{font-size:1.28rem;line-height:1.4}

.eyebrow,.kicker{
  font-size:.82rem;font-weight:600;letter-spacing:.16em;
  text-transform:uppercase;color:var(--accent);
}
.kicker{display:inline-block;margin-bottom:18px;position:relative;padding-left:30px}
.kicker::before{
  content:"";position:absolute;left:0;top:50%;width:20px;height:1px;
  background:var(--accent);transform:translateY(-50%);
}
.kicker--light{color:var(--accent-soft)}
.kicker--light::before{background:var(--accent-soft)}

.section-head{max-width:680px;margin-bottom:clamp(40px,5vw,64px)}
.section-head h2{margin-bottom:0}
.section-sub{margin-top:18px;color:var(--ink-soft);font-size:1.06rem}
.hero__sub,.section-sub,.card p,.feat__lead,.case__quote,.footer-brand p,.cta-copy>p{text-wrap:pretty}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:15px 30px;border-radius:var(--r-sm);
  font-size:1rem;font-weight:600;
  transition:transform .25s var(--ease),background .25s var(--ease),box-shadow .25s var(--ease),color .25s var(--ease);
  white-space:nowrap;
}
.btn--primary{background:var(--brand);color:var(--on-brand);box-shadow:0 12px 26px -14px color-mix(in srgb,var(--brand) 78%,transparent)}
.btn--primary:hover{background:var(--brand-deep);transform:translateY(-2px);box-shadow:0 16px 32px -14px color-mix(in srgb,var(--brand) 85%,transparent)}
.btn--ghost{background:transparent;color:var(--ink);border:1px solid var(--line-strong)}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn--sm{padding:11px 22px;font-size:.95rem}
.btn--block{width:100%}

/* ===================================================================
   顶部导航
   =================================================================== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:color-mix(in srgb,var(--bg) 82%,transparent);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px -26px color-mix(in srgb,var(--ink) 50%,transparent);
}
.header-inner{display:flex;align-items:center;gap:32px;height:72px}

.brand{display:flex;align-items:center;gap:11px}
/* 品牌图标：预着色 PNG，用 background-image（全浏览器可靠） */
.brand__mark{
  width:74px;height:44px;flex:none;
  background:url('../img/logo.png') center/contain no-repeat;
}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__text strong{font-family:var(--font-display);font-size:1.18rem;font-weight:600;letter-spacing:.02em}
.brand__text em{font-style:normal;font-size:.68rem;color:var(--ink-mute);letter-spacing:.08em}

.nav{display:flex;gap:30px;margin-right:auto}
.nav a{
  font-size:.97rem;font-weight:500;color:var(--ink-soft);
  position:relative;padding:6px 0;transition:color .2s var(--ease);
}
.nav a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:1.5px;
  background:var(--accent);transition:width .26s var(--ease);
}
.nav a:hover{color:var(--ink)}
.nav a:hover::after{width:100%}

.header-actions{display:flex;align-items:center;gap:18px}
.lang{display:flex;align-items:center;gap:7px;font-size:.88rem}
.lang__item{color:var(--ink-mute);font-weight:500;transition:color .2s}
.lang__item:hover{color:var(--ink)}
.lang__item.is-active{color:var(--ink);font-weight:600}
.lang__sep{color:var(--line-strong)}

.nav-toggle{display:none;flex-direction:column;gap:5px;padding:8px}
.nav-toggle span{width:22px;height:2px;background:var(--ink);border-radius:2px;transition:transform .3s var(--ease),opacity .2s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===================================================================
   Hero
   =================================================================== */
.hero{position:relative;overflow:hidden;padding-block:clamp(56px,7vw,104px)}
.hero::before{
  content:"";position:absolute;top:-30%;right:-12%;width:62vw;height:62vw;
  max-width:760px;max-height:760px;border-radius:50%;
  background:radial-gradient(circle,color-mix(in srgb,var(--brand-soft) 13%,transparent),transparent 66%);
  z-index:0;
}
.hero__inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:.95fr 1.05fr;gap:clamp(36px,5vw,76px);
  align-items:center;
}
.hero__title{
  font-size:clamp(2.35rem,4.7vw,3.7rem);line-height:1.22;
  letter-spacing:.005em;margin:20px 0 22px;
}
.hero__sub{font-size:1.12rem;color:var(--ink-soft);max-width:34em;margin-bottom:32px}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero__endorse{
  font-size:.9rem;color:var(--ink-mute);padding-top:22px;
  border-top:1px solid var(--line);
}

/* --- Hero 产品截图 --- */
.hero__visual{position:relative}
.app-shot{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--shadow-lift);
  overflow:hidden;
}
.app-shot__bar{
  display:flex;align-items:center;gap:7px;
  padding:11px 16px;background:var(--surface-2);border-bottom:1px solid var(--line);
}
.app-shot__bar .dot{width:9px;height:9px;border-radius:50%;background:var(--line-strong)}
.app-shot__label{margin-left:10px;font-size:.78rem;color:var(--ink-mute);letter-spacing:.04em}
.app-shot__img{display:block;width:100%;height:auto}

.float-card{
  position:absolute;display:flex;align-items:center;gap:10px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);padding:11px 14px;font-size:.78rem;color:var(--ink-soft);
  box-shadow:var(--shadow-lift);line-height:1.4;
}
.float-card strong{color:var(--ink);font-size:.84rem}
.float-card--1{top:-5%;left:-9%;animation:floaty 5s ease-in-out infinite}
.float-card--2{bottom:-6%;right:-8%;animation:floaty 5.6s ease-in-out infinite .7s}
.fc-icon{
  width:26px;height:26px;border-radius:50%;flex:none;
  background:var(--brand);color:var(--on-brand);display:grid;place-items:center;
  font-size:.8rem;font-weight:700;
}
.fc-dot{width:9px;height:9px;border-radius:50%;background:var(--accent);flex:none;
  box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 24%,transparent)}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}

/* ===================================================================
   信任背书条
   =================================================================== */
.trust{
  padding-block:clamp(48px,6vw,76px);
  background:var(--brand);color:color-mix(in srgb,var(--on-brand) 84%,transparent);
}
.trust__title{
  text-align:center;font-family:var(--font-display);font-size:1.32rem;
  color:var(--on-brand);margin-bottom:38px;letter-spacing:.04em;
}
.trust__stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  padding-bottom:34px;border-bottom:1px solid color-mix(in srgb,var(--on-brand) 18%,transparent);
}
.stat{
  display:flex;flex-direction:column;align-items:center;text-align:center;gap:9px;
  padding-top:19px;position:relative;
}
.stat::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:22px;height:2px;background:var(--accent-soft);
}
.stat__n{
  font-family:var(--font-display);font-size:clamp(1.7rem,2.6vw,2.15rem);
  font-weight:600;color:var(--on-brand);line-height:1.12;white-space:nowrap;
}
.stat__l{font-size:.86rem;color:color-mix(in srgb,var(--on-brand) 78%,transparent);line-height:1.5;max-width:11em}
.trust__assoc{
  text-align:center;margin-top:26px;font-size:.92rem;
  color:var(--accent-soft);letter-spacing:.03em;
}
.logo-wall{
  display:flex;flex-wrap:wrap;justify-content:center;gap:14px 38px;
  margin-top:26px;
}
.logo-wall span{
  font-size:.9rem;color:color-mix(in srgb,var(--on-brand) 50%,transparent);letter-spacing:.06em;
  padding:7px 0;
}

/* ===================================================================
   通用网格 / 卡片
   =================================================================== */
.grid{display:grid;gap:22px}
.grid--4{grid-template-columns:repeat(4,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}

.card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:30px 26px;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-soft);border-color:var(--line-strong)}
.card h3{margin-bottom:8px}
.card p{color:var(--ink-soft);font-size:.96rem}

/* 适用行业 */
.card--industry .card__icon{
  width:54px;height:54px;border-radius:14px;margin-bottom:20px;
  background:var(--bg-2);display:grid;place-items:center;
  border:1px solid var(--line);
}
.card__icon svg{width:27px;height:27px;fill:none;stroke:var(--brand);stroke-width:1.6;
  stroke-linecap:round;stroke-linejoin:round}

/* 为什么选客云 */
.card--why{position:relative;padding-top:34px}
.card__no{
  font-family:var(--font-display);font-size:1.7rem;font-weight:600;
  color:var(--accent);opacity:.55;display:block;margin-bottom:14px;
}

/* ===================================================================
   核心功能 Bento
   =================================================================== */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:22px}
.feat{
  grid-column:span 2;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:32px 30px;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
}
.feat--wide{grid-column:span 3}
.feat:hover{transform:translateY(-5px);box-shadow:var(--shadow-soft);border-color:var(--line-strong)}
.feat__icon{
  width:50px;height:50px;border-radius:13px;margin-bottom:18px;
  background:var(--brand);display:grid;place-items:center;
}
.feat__icon svg{width:25px;height:25px;fill:none;stroke:var(--accent-soft);
  stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.feat h3{margin-bottom:6px}
.feat__lead{color:var(--accent);font-weight:600;font-size:.95rem;margin-bottom:16px}
.feat__list{display:flex;flex-direction:column;gap:9px}
.feat__list li{
  position:relative;padding-left:22px;color:var(--ink-soft);font-size:.95rem;
}
.feat__list li::before{
  content:"";position:absolute;left:2px;top:.62em;width:7px;height:7px;
  border-radius:2px;background:var(--accent);transform:rotate(45deg);
}

/* AI 版块尾部说明 */
.ai-note{margin-top:38px;text-align:center;font-size:.95rem;color:var(--ink-soft)}
.ai-note a{color:var(--brand);font-weight:600;border-bottom:1px solid var(--line-strong)}
.ai-note a:hover{border-color:var(--brand)}

/* ===================================================================
   数据安全（深色锚点屏）
   =================================================================== */
.security{
  background:var(--brand-deep);color:color-mix(in srgb,var(--on-brand) 84%,transparent);
  position:relative;overflow:hidden;
}
.security::before{
  content:"";position:absolute;bottom:-40%;left:-10%;width:54vw;height:54vw;
  max-width:620px;max-height:620px;border-radius:50%;
  background:radial-gradient(circle,color-mix(in srgb,var(--accent) 15%,transparent),transparent 68%);
}
.security .section-head{position:relative}
.security h2{color:var(--on-brand)}
.security .section-sub{color:color-mix(in srgb,var(--on-brand) 78%,transparent)}
.grid--sec{
  position:relative;
  display:grid;grid-template-columns:repeat(5,1fr);gap:0;
  border:1px solid color-mix(in srgb,var(--on-brand) 16%,transparent);border-radius:var(--r-lg);
  overflow:hidden;
}
.sec-item{
  padding:30px 24px;border-right:1px solid color-mix(in srgb,var(--on-brand) 13%,transparent);
  transition:background .3s var(--ease);
}
.sec-item:last-child{border-right:none}
.sec-item:hover{background:color-mix(in srgb,var(--on-brand) 5%,transparent)}
.sec-item h3{
  color:var(--on-brand);margin-bottom:10px;font-size:1.12rem;
  padding-bottom:12px;position:relative;
}
.sec-item h3::after{
  content:"";position:absolute;left:0;bottom:0;width:26px;height:1.5px;
  background:var(--accent);
}
.sec-item p{font-size:.9rem;color:color-mix(in srgb,var(--on-brand) 74%,transparent);line-height:1.65}

/* ===================================================================
   客户案例
   =================================================================== */
.case{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:32px 28px;
  display:flex;flex-direction:column;gap:22px;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
.case:hover{transform:translateY(-5px);box-shadow:var(--shadow-soft)}
.case__quote{
  font-family:var(--font-display);font-size:1.08rem;line-height:1.7;
  color:var(--ink);flex:1;
}
.case__by{display:flex;align-items:center;gap:13px;
  padding-top:18px;border-top:1px solid var(--line)}
.case__avatar{
  width:42px;height:42px;border-radius:50%;flex:none;
  background:var(--bg-2);border:1px solid var(--line-strong);
  display:grid;place-items:center;
  font-family:var(--font-display);font-weight:600;color:var(--brand);
}
.case__meta{display:flex;flex-direction:column;line-height:1.4}
.case__meta strong{font-size:.95rem}
.case__meta em{font-style:normal;font-size:.76rem;color:var(--ink-mute)}

/* ===================================================================
   服务支持
   =================================================================== */
.support{
  padding:30px 28px;border-left:2px solid var(--line);
  transition:border-color .3s var(--ease);
}
.support:hover{border-left-color:var(--accent)}
.support__num{
  font-family:var(--font-display);font-size:.95rem;font-weight:600;
  color:var(--accent);letter-spacing:.1em;
}
.support h3{margin:12px 0 8px}
.support p{color:var(--ink-soft);font-size:.96rem}

/* ===================================================================
   最终转化区
   =================================================================== */
.cta-section{background:linear-gradient(180deg,var(--bg-2),var(--bg))}
.cta-inner{
  display:grid;grid-template-columns:1fr 1fr;gap:clamp(36px,5vw,72px);
  align-items:center;
}
.cta-copy h2{margin-bottom:18px}
.cta-copy>p{color:var(--ink-soft);font-size:1.06rem;margin-bottom:24px}
.cta-points{display:flex;flex-direction:column;gap:12px;margin-bottom:26px}
.cta-points li{position:relative;padding-left:28px;color:var(--ink-soft)}
.cta-points li::before{
  content:"";position:absolute;left:0;top:.18em;width:18px;height:18px;
  border-radius:50%;background:var(--brand);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23FFFFFF' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5L20 6'/%3E%3C/svg%3E");
  background-size:11px;background-repeat:no-repeat;background-position:center;
}
.cta-contact{font-size:.94rem;color:var(--ink-mute)}
.cta-contact a{color:var(--brand);font-weight:600;border-bottom:1px solid var(--line-strong)}
.cta-contact a:hover{border-color:var(--brand)}

.lead-form{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:clamp(26px,3.4vw,40px);
  box-shadow:var(--shadow-soft);
}
.field{margin-bottom:17px}
.field label{display:block;font-size:.88rem;font-weight:600;margin-bottom:7px}
.field label span{color:var(--accent)}
.field input,.field select{
  width:100%;padding:13px 15px;
  background:var(--surface-2);border:1px solid var(--line-strong);
  border-radius:var(--r-sm);color:var(--ink);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field input::placeholder{color:var(--ink-mute)}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 14%,transparent);
}
.field input.is-error,.field select.is-error{
  border-color:#B5544A;box-shadow:0 0 0 3px rgba(181,84,74,.12);
}
.lead-form .btn{margin-top:6px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}

.code-row{display:flex;gap:10px}
.code-row input{flex:1;min-width:0}
.btn-code{
  flex:none;white-space:nowrap;padding:0 18px;
  background:var(--brand);color:var(--on-brand);
  border:1px solid var(--brand);border-radius:var(--r-sm);
  font-size:.86rem;font-weight:600;cursor:pointer;
  transition:background .2s var(--ease);
}
.btn-code:hover:not(:disabled){background:var(--brand-deep)}
.btn-code:disabled{
  background:var(--surface-2);border-color:var(--line-strong);
  color:var(--ink-mute);cursor:not-allowed;
}

.form-agree{
  display:flex;align-items:flex-start;gap:9px;margin-top:4px;
  font-size:.82rem;color:var(--ink-soft);line-height:1.55;cursor:pointer;
}
.form-agree input{
  flex:none;width:15px;height:15px;margin-top:2px;
  accent-color:var(--brand);cursor:pointer;
}
.form-agree a{color:var(--brand);font-weight:600;border-bottom:1px solid var(--line-strong)}
.form-agree.is-error,.form-agree.is-error a{color:#B5544A}

.form-success,.form-error{
  margin-top:14px;text-align:center;font-size:.92rem;font-weight:600;
  border-radius:var(--r-sm);padding:12px;
}
.form-success{color:var(--brand);background:color-mix(in srgb,var(--brand) 9%,transparent)}
.form-error{color:#B5544A;background:rgba(181,84,74,.08)}

/* ===================================================================
   页脚
   =================================================================== */
.site-footer{background:var(--brand-deep);color:color-mix(in srgb,var(--on-brand) 70%,transparent);padding-top:clamp(54px,6vw,84px)}
.footer-inner{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:38px;
  padding-bottom:48px;
}
/* 页脚深色底：统一用浅色 logo（置于主题规则之后以覆盖之） */
.brand--footer .brand__mark{background-image:url('../img/logo-light.png')}
.brand--footer .brand__text strong{color:var(--on-brand)}
.footer-brand p{margin-top:16px;font-size:.92rem;max-width:30em;line-height:1.7}
.footer-col h4{
  font-family:var(--font-sans);font-size:.82rem;font-weight:700;
  letter-spacing:.12em;text-transform:uppercase;
  color:var(--accent-soft);margin-bottom:18px;
}
.footer-col a{
  display:block;font-size:.93rem;margin-bottom:11px;
  color:color-mix(in srgb,var(--on-brand) 72%,transparent);transition:color .2s var(--ease);
}
.footer-col a:hover{color:var(--on-brand)}
.footer-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  padding-block:24px;border-top:1px solid color-mix(in srgb,var(--on-brand) 12%,transparent);
  font-size:.82rem;color:color-mix(in srgb,var(--on-brand) 52%,transparent);
}
.footer-bottom a:hover{color:var(--accent-soft)}

/* ===================================================================
   浮动咨询
   =================================================================== */
.floating{
  position:fixed;right:24px;bottom:24px;z-index:90;
  display:flex;flex-direction:column;gap:11px;align-items:flex-end;
}
.floating__btn{
  display:flex;align-items:center;gap:9px;
  background:var(--surface);border:1px solid var(--line-strong);
  border-radius:40px;box-shadow:var(--shadow-soft);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.floating__btn svg{width:21px;height:21px;fill:none;stroke:var(--brand);
  stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.floating__btn:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift)}
.floating__btn--main{
  background:var(--brand);color:var(--on-brand);padding:13px 22px;font-weight:600;font-size:.95rem;
}
.floating__btn--main svg{stroke:var(--accent-soft)}
.floating__btn:not(.floating__btn--main){width:46px;height:46px;justify-content:center}

/* ===================================================================
   滚动渐入动效
   =================================================================== */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
.reveal.is-in:nth-child(2){transition-delay:.07s}
.reveal.is-in:nth-child(3){transition-delay:.14s}
.reveal.is-in:nth-child(4){transition-delay:.21s}
.reveal.is-in:nth-child(5){transition-delay:.28s}

/* ===================================================================
   响应式
   =================================================================== */
@media (max-width:1024px){
  .hero__inner{grid-template-columns:1fr;gap:48px}
  .hero__visual{max-width:520px;margin-inline:auto}
  .cta-inner{grid-template-columns:1fr}
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .bento{grid-template-columns:repeat(2,1fr)}
  .feat,.feat--wide{grid-column:span 1}
  .grid--sec{grid-template-columns:1fr 1fr}
  .sec-item{border-right:1px solid color-mix(in srgb,var(--on-brand) 13%,transparent);border-bottom:1px solid color-mix(in srgb,var(--on-brand) 13%,transparent)}
  .sec-item:nth-child(2n){border-right:none}
}
@media (max-width:760px){
  body{font-size:16px}
  .nav,.header-actions .lang{
    display:none;
  }
  .nav{
    position:fixed;inset:72px 0 auto;flex-direction:column;gap:0;
    background:var(--bg);border-bottom:1px solid var(--line);
    padding:12px clamp(20px,5vw,52px) 22px;margin:0;
    box-shadow:var(--shadow-soft);
  }
  .nav.is-open{display:flex}
  .nav a{padding:14px 0;border-bottom:1px solid var(--line);font-size:1.05rem}
  .nav a::after{display:none}
  .nav-toggle{display:flex}
  .header-inner{gap:16px}
  .brand{margin-right:auto}
  .brand__mark{width:60px;height:36px}
  .trust__stats{grid-template-columns:1fr 1fr;gap:30px 18px}
  .grid--4,.grid--3,.bento{grid-template-columns:1fr}
  .grid--sec{grid-template-columns:1fr}
  .sec-item,.sec-item:nth-child(2n){border-right:none}
  .sec-item:last-child{border-bottom:none}
  .float-card{font-size:.72rem;padding:9px 11px}
  .float-card--1{left:-3%;top:-4%}
  .float-card--2{right:-3%;bottom:-5%}
  .float-card strong{font-size:.78rem}
  .fc-icon{width:22px;height:22px}
  .field-row{grid-template-columns:1fr;gap:0}
  .footer-inner{grid-template-columns:1fr 1fr;gap:30px}
  .footer-brand{grid-column:1/-1}
  .floating__btn--main span{display:none}
  .floating__btn--main{width:52px;height:52px;padding:0;justify-content:center}
}
@media (max-width:420px){
  .footer-inner{grid-template-columns:1fr}
  .hero__cta .btn{flex:1}
}

/* 减弱动效偏好 */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}