/* ============================================================
   码城科技 MACHENG TECH — 官网样式
   1. Tokens & Reset
   2. Utilities / Buttons / Reveal
   3. Navigation
   4. Hero
   5. Sections (shared)
   6. Services
   7. Tech
   8. Industries
   9. Cases
   10. Process
   11. Custom
   12. About
   13. Contact / Form
   14. Footer / ToTop
   15. Responsive
   ============================================================ */

/* ---------- 1. Tokens（暗色为默认，html[data-theme=light] 覆盖） ---------- */
:root{
  color-scheme: dark;

  /* 底色层 */
  --ink:        #05080f;
  --ink-1:      #070b14;
  --ink-2:      #0a111d;
  --ink-3:      #0d1626;

  /* 表面 / 分隔 */
  --surf-1:     rgba(255,255,255,.045);
  --surf-2:     rgba(255,255,255,.012);
  --surf-3:     rgba(255,255,255,.03);
  --surf-4:     rgba(255,255,255,.07);
  --line:       rgba(148,163,184,.13);
  --line-mid:   rgba(148,163,184,.20);
  --line-strong:rgba(148,163,184,.4);
  --deco:       rgba(148,163,184,.32);
  --grid-line:  rgba(148,163,184,.075);
  --chip-bg:    rgba(148,163,184,.08);
  --chip-bd:    rgba(148,163,184,.10);
  --chip-fg:    #a4b4cf;

  /* 文本 */
  --text:       #e9eff9;
  --text-strong:#dbe6fb;
  --text-soft:  #c2cee2;
  --dim:        #98a5bc;
  --faint:      #7a879f;
  --badge-fg:   #c5d3f2;
  --footer-fg:  #8494ad;

  /* 主题强调 */
  --blue:       #4f7bff;
  --blue-soft:  #6c8cff;
  --cyan:       #22d3ee;
  --violet:     #8b5cf6;
  --icon-fg:    #a9bdf5;
  --link-accent:#a8bdff;
  --link-line:  rgba(168,189,255,.3);
  --grad:       linear-gradient(100deg,#6c8cff 0%,#4f7bff 45%,#22d3ee 100%);
  --grad-text:  var(--grad);
  --stat-grad:  linear-gradient(180deg,#fff,#a9bff5);
  --stat-fallback:#eef3ff;

  /* 光晕与浮层 */
  --glow-1:     rgba(79,123,255,.5);
  --glow-2:     rgba(34,211,238,.34);
  --alt-glow:   rgba(79,123,255,.055);
  --case-glow:  rgba(79,123,255,.16);
  --panel-glow: rgba(79,123,255,.22);
  --panel-glow-2:rgba(34,211,238,.2);
  --casecat-bg: rgba(34,211,238,.09);
  --nav-bg:     rgba(6,10,18,.78);
  --nav-solid:  rgba(5,8,15,.97);
  --nav-fade:   linear-gradient(180deg,rgba(5,8,15,.9),rgba(5,8,15,.55) 70%,transparent);
  --elev:       rgba(13,22,38,.86);
  --float-bg:   rgba(11,18,32,.9);
  --card-strong:linear-gradient(172deg,rgba(13,22,38,.9),rgba(7,11,20,.95));
  --logo-filter:grayscale(1) brightness(0) invert(1) opacity(.55);
  --radius:     18px;
  --radius-sm:  12px;
  --shadow:     0 24px 60px -28px rgba(0,0,0,.9);
  --font:       "Inter","SF Pro SC",-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --mono:       ui-monospace,"SF Mono",Menlo,Consolas,"JetBrains Mono",monospace;
  --ease:       cubic-bezier(.22,.61,.36,1);
  --nav-h:      74px;
  --max:        1200px;
}

/* ---------- 1b. 亮色主题 ---------- */
html[data-theme="light"]{
  color-scheme: light;

  --ink:        #f5f7fb;
  --ink-1:      #ffffff;
  --ink-2:      #eef2f8;
  --ink-3:      #ffffff;

  --surf-1:     rgba(13,22,38,.05);
  --surf-2:     rgba(13,22,38,.014);
  --surf-3:     rgba(13,22,38,.035);
  --surf-4:     rgba(13,22,38,.07);
  --line:       rgba(15,23,42,.12);
  --line-mid:   rgba(15,23,42,.18);
  --line-strong:rgba(15,23,42,.32);
  --deco:       rgba(15,23,42,.28);
  --grid-line:  rgba(15,23,42,.07);
  --chip-bg:    rgba(13,22,38,.05);
  --chip-bd:    rgba(13,22,38,.09);
  --chip-fg:    #3d4c66;

  --text:       #0d1626;
  --text-strong:#16233c;
  --text-soft:  #33425c;
  --dim:        #4b5a72;
  --faint:      #5d6c84;
  --badge-fg:   #2a3c5e;
  --footer-fg:  #56657e;

  --blue:       #2f52d8;
  --blue-soft:  #2f52d8;
  --cyan:       #0e9fbf;
  --icon-fg:    #2f52d8;
  --link-accent:#2f52d8;
  --link-line:  rgba(47,82,216,.3);
  --grad:       linear-gradient(100deg,#2f52d8 0%,#3a63f0 50%,#0e9fbf 100%);
  --grad-text:  linear-gradient(100deg,#2f52d8 0%,#3a63f0 45%,#0e9fbf 100%);
  --stat-grad:  linear-gradient(180deg,#0d1626,#3a4a6b);
  --stat-fallback:#0d1626;

  --glow-1:     rgba(79,123,255,.20);
  --glow-2:     rgba(34,211,238,.16);
  --alt-glow:   rgba(79,123,255,.05);
  --case-glow:  rgba(79,123,255,.09);
  --panel-glow: rgba(79,123,255,.14);
  --panel-glow-2:rgba(14,159,191,.25);
  --casecat-bg: rgba(14,159,191,.10);
  --nav-bg:     rgba(250,251,254,.86);
  --nav-solid:  rgba(248,250,253,.98);
  --nav-fade:   linear-gradient(180deg,rgba(245,247,251,.95),rgba(245,247,251,.6) 70%,transparent);
  --elev:       rgba(255,255,255,.92);
  --float-bg:   rgba(255,255,255,.95);
  --card-strong:linear-gradient(172deg,#ffffff,#f3f6fc);
  --logo-filter:grayscale(1) brightness(0) opacity(.55);

  --shadow:     0 20px 50px -30px rgba(13,22,38,.35);
}

/* 亮色下的细节修正 */
html[data-theme="light"] .hero__title,
html[data-theme="light"] h1{letter-spacing:-.015em}
html[data-theme="light"] .qrcard__frame{border:1px solid rgba(13,22,38,.08)}
html[data-theme="light"] .btn--ghost{border-color:var(--line-mid)}
html[data-theme="light"] .badge{border-color:rgba(47,82,216,.28);background:linear-gradient(100deg,rgba(47,82,216,.12),rgba(14,159,191,.06))}
html[data-theme="light"] .svc__icon{background:linear-gradient(150deg,rgba(47,82,216,.14),rgba(14,159,191,.07));border-color:rgba(47,82,216,.22)}
html[data-theme="light"] .case__cat{color:#0b6f86}
html[data-theme="light"] .filter.is-active{color:#fff;background-color:#2f52d8;background-image:linear-gradient(120deg,#2f52d8,#0e88a8)}
html[data-theme="light"] .hero__stats b{letter-spacing:-.02em}
html[data-theme="light"] .step:hover{background:linear-gradient(170deg,rgba(47,82,216,.07),transparent 70%)}
html[data-theme="light"] .ind:hover{background:linear-gradient(160deg,rgba(47,82,216,.09),rgba(14,159,191,.04))}
html[data-theme="light"] .svc:hover{background:linear-gradient(168deg,rgba(47,82,216,.08),var(--surf-2))}
html[data-theme="light"] .codecard{box-shadow:0 40px 80px -44px rgba(13,22,38,.6),inset 0 1px 0 rgba(255,255,255,.06)}
html[data-theme="light"] .totop{box-shadow:0 14px 30px -16px rgba(13,22,38,.28)}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{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}
input,select,textarea{font:inherit;color:inherit}
::selection{background:rgba(79,123,255,.32);color:#fff}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}

/* ---------- 2. Utilities ---------- */
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 28px}

.grad-text{
  color:#8fa9ff; /* 兜底：不支持 background-clip:text 时仍清晰可见 */
}
@supports ((-webkit-background-clip:text) or (background-clip:text)){
  .grad-text{
    background:var(--grad-text);
    -webkit-background-clip:text;background-clip:text;
    color:transparent;
    -webkit-text-fill-color:transparent;
  }
}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:50px;padding:0 26px;
  border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.02em;
  white-space:nowrap;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),background .28s var(--ease),border-color .28s var(--ease),color .28s var(--ease);
  will-change:transform;
}
.btn svg{width:16px;height:16px;transition:transform .28s var(--ease)}
.btn:hover svg{transform:translateX(3px)}
.btn--sm{height:42px;padding:0 18px;font-size:14px}

.btn--primary{
  color:#fff;
  background:linear-gradient(180deg,#5b84ff,#3a63f0);
  box-shadow:0 10px 26px -12px rgba(79,123,255,.9),inset 0 1px 0 rgba(255,255,255,.24);
}
.btn--primary:hover{
  transform:translateY(-2px);
  box-shadow:0 18px 38px -14px rgba(79,123,255,.95),inset 0 1px 0 rgba(255,255,255,.3);
}
.btn--ghost{
  color:var(--text);
  border:1px solid var(--line-mid);
  background:var(--surf-3);
  backdrop-filter:blur(8px);
}
.btn--ghost:hover{background:var(--surf-4);border-color:var(--line-strong);transform:translateY(-2px)}
.btn--block{width:100%}

/* 滚动揭示（仅在 JS 可用时隐藏，避免无脚本时白屏） */
.reveal{transition:opacity .8s var(--ease),transform .8s var(--ease);transition-delay:var(--d,0ms)}
html.js .reveal{opacity:0;transform:translateY(20px)}
html.js .reveal.is-in{opacity:1;transform:none}

/* ---------- 3. Navigation ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:90;
  transition:background .35s var(--ease),border-color .35s var(--ease),backdrop-filter .35s var(--ease);
  border-bottom:1px solid transparent;
}
.nav::before{
  content:"";position:absolute;inset:0;
  background:var(--nav-fade);
  opacity:1;transition:opacity .35s var(--ease);pointer-events:none;
}
.nav.is-stuck{
  background:var(--nav-bg);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom-color:var(--line);
}
.nav.is-stuck::before{opacity:0}
.nav__inner{
  position:relative;
  height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}

.brand{display:inline-flex;align-items:center;gap:11px;flex-shrink:0}
.brand__mark{width:36px;height:36px;flex-shrink:0;display:block;filter:drop-shadow(0 4px 12px rgba(79,123,255,.35))}
.brand__mark img{display:block;width:100%;height:100%;object-fit:contain}
.brand__text{display:flex;flex-direction:column;line-height:1.12}
.brand__text strong{font-size:17px;font-weight:700;letter-spacing:.06em}
.brand__text em{
  font-style:normal;font-size:10px;letter-spacing:.24em;
  color:var(--faint);font-weight:600;margin-top:2px;
}

.nav__links{display:flex;align-items:center;gap:4px;flex-wrap:nowrap}
.nav__links a{
  position:relative;
  padding:9px 14px;border-radius:10px;
  white-space:nowrap;
  font-size:14.5px;font-weight:500;color:var(--dim);
  transition:color .25s var(--ease),background .25s var(--ease);
}
.nav__links a:hover{color:var(--text);background:var(--surf-1)}
.nav__links a.is-active{color:var(--text)}
.nav__links a.is-active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:16px;height:2px;border-radius:2px;background:var(--grad);
}

.nav__actions{display:flex;align-items:center;gap:10px;flex-shrink:0}

.iconbtn{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;padding:0;border-radius:11px;
  border:1px solid var(--line-mid);
  background:var(--surf-3);
  color:var(--text);
  transition:background .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease),color .25s var(--ease);
}
.iconbtn:hover{background:var(--surf-4);border-color:var(--line-strong);transform:translateY(-1px);color:var(--text)}
.iconbtn .ico{width:18px;height:18px;display:none}
html[data-theme-mode="auto"]  .iconbtn--theme .ico--auto{display:block}
html[data-theme-mode="light"] .iconbtn--theme .ico--light{display:block}
html[data-theme-mode="dark"]  .iconbtn--theme .ico--dark{display:block}
.iconbtn--lang{width:auto;min-width:46px;padding:0 11px;font-size:12.5px;font-weight:700;letter-spacing:.08em}
.iconbtn--lang .lang-cur{font-family:var(--mono);line-height:1}

.nav__toggle{
  display:none;
  width:42px;height:42px;border-radius:11px;
  border:1px solid var(--line-mid);
  align-items:center;justify-content:center;flex-direction:column;gap:4.5px;
}
.nav__toggle span{
  display:block;width:17px;height:1.6px;background:var(--text);border-radius:2px;
  transition:transform .3s var(--ease),opacity .25s var(--ease);
}
body.menu-open .nav__toggle span:nth-child(1){transform:translateY(6.1px) rotate(45deg)}
body.menu-open .nav__toggle span:nth-child(2){opacity:0}
body.menu-open .nav__toggle span:nth-child(3){transform:translateY(-6.1px) rotate(-45deg)}

/* 移动端菜单 */
.mmenu{
  position:fixed;inset:0;z-index:85;
  background:var(--nav-solid);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  padding:calc(var(--nav-h) + 34px) 28px 40px;
  display:flex;flex-direction:column;
  opacity:0;visibility:hidden;transform:translateY(-12px);
  /* visibility 关闭时延迟到动画结束，打开时立即生效（否则菜单内元素无法立即获得焦点） */
  transition:opacity .35s var(--ease),transform .35s var(--ease),visibility 0s linear .35s;
  overflow-y:auto;
}
body.menu-open .mmenu{
  opacity:1;visibility:visible;transform:none;
  transition:opacity .35s var(--ease),transform .35s var(--ease),visibility 0s linear 0s;
}
.mmenu__list{display:flex;flex-direction:column}
.mmenu__list a{
  display:flex;align-items:baseline;gap:14px;
  padding:17px 4px;
  font-size:21px;font-weight:600;letter-spacing:.02em;
  border-bottom:1px solid var(--line);
}
.mmenu__list a span{
  font-family:var(--mono);font-size:11px;font-weight:500;
  color:var(--blue);letter-spacing:.1em;
}
.mmenu__list a.is-active{color:#fff}
.mmenu__list a.is-active span{color:var(--cyan)}
.mmenu__switches{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:26px}
.switch{
  display:flex;flex-direction:column;gap:3px;align-items:flex-start;
  padding:12px 14px;border-radius:12px;text-align:left;
  border:1px solid var(--line-mid);background:var(--surf-3);
  transition:background .25s var(--ease),border-color .25s var(--ease);
}
.switch:hover{background:var(--surf-4);border-color:var(--line-strong)}
.switch span{font-size:11px;letter-spacing:.1em;color:var(--faint)}
.switch b{font-size:13.5px;font-weight:700;letter-spacing:.01em}
.mmenu__cta{margin-top:28px;width:100%}
.mmenu__meta{margin-top:18px;font-size:13px;color:var(--faint);text-align:center}
body.menu-open{overflow:hidden}

.skip{
  position:fixed;top:0;left:0;z-index:200;
  width:1px;height:1px;overflow:hidden;
  clip:rect(0 0 0 0);clip-path:inset(50%);
  padding:0;border:0;
  background:#2f52d8;color:#fff;font-weight:600;font-size:14px;
  border-radius:0 0 10px 0;
}
.skip:focus{
  width:auto;height:auto;overflow:visible;
  clip:auto;clip-path:none;
  padding:12px 20px;
}
/* 跳转落到主内容时不画整页焦点框 */
#main:focus{outline:none}

/* ---------- 4. Hero ---------- */
.hero{position:relative;padding:calc(var(--nav-h) + 76px) 0 0;overflow:hidden}
.hero__bg{position:absolute;inset:0;pointer-events:none}
.hero__grid{
  position:absolute;inset:-10% -10% 0;
  background-image:
    linear-gradient(to right,var(--grid-line) 1px,transparent 1px),
    linear-gradient(to bottom,var(--grid-line) 1px,transparent 1px);
  background-size:62px 62px;
  mask-image:radial-gradient(ellipse 78% 62% at 50% 12%,#000 25%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 78% 62% at 50% 12%,#000 25%,transparent 78%);
}
.hero__glow{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5}
.hero__glow--a{width:620px;height:620px;top:-260px;left:-140px;background:radial-gradient(circle,var(--glow-1),transparent 65%)}
.hero__glow--b{width:560px;height:560px;top:-160px;right:-160px;background:radial-gradient(circle,var(--glow-2),transparent 66%)}

.hero__inner{
  position:relative;
  display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);
  gap:56px;align-items:center;
  padding-bottom:76px;
}
.hero__inner > *,.tech > *,.about > *,.contact > *,.footer__top > *{min-width:0}
.hero__copy{max-width:600px}

.badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:7px 15px 7px 11px;border-radius:999px;
  border:1px solid rgba(79,123,255,.28);
  background:linear-gradient(100deg,rgba(79,123,255,.14),rgba(34,211,238,.06));
  font-size:12.5px;font-weight:600;letter-spacing:.06em;color:var(--badge-fg);
}
.badge__dot{
  width:6px;height:6px;border-radius:50%;background:var(--cyan);flex-shrink:0;
  box-shadow:0 0 0 4px rgba(34,211,238,.16);
  animation:pulse 2.6s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 3px rgba(34,211,238,.16)}
  50%{box-shadow:0 0 0 7px rgba(34,211,238,.04)}
}

.hero__title{
  margin:24px 0 0;
  /* 上限 60px：保证「智能时代的数字底座」9 字在 555px 列宽内不断行 */
  font-size:clamp(38px,4.6vw,60px);
  line-height:1.16;
  font-weight:800;
  letter-spacing:-.02em;
}
.hero__lede{
  margin-top:24px;
  max-width:560px;
  font-size:16.5px;
  line-height:1.85;
  color:var(--dim);
}
.hero__lede strong{color:var(--text-strong);font-weight:600}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}

.hero__stats{
  display:grid;grid-template-columns:repeat(4,auto);
  gap:34px;margin-top:52px;
  padding-top:28px;border-top:1px solid var(--line);
}
.hero__stats dt{display:flex;align-items:baseline}
.hero__stats b{
  font-family:var(--font);
  font-size:32px;font-weight:800;line-height:1;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
  color:var(--stat-fallback);
}
@supports ((-webkit-background-clip:text) or (background-clip:text)){
  .hero__stats b{
    background:var(--stat-grad);
    -webkit-background-clip:text;background-clip:text;
    -webkit-text-fill-color:transparent;color:transparent;
  }
}
.hero__stats i{font-style:normal;font-size:15px;font-weight:700;color:var(--blue-soft);margin-left:2px}
.hero__stats dd{margin-top:7px;font-size:12.5px;color:var(--faint);letter-spacing:.04em;white-space:nowrap}

/* 代码卡片 */
.hero__visual{position:relative}
.codecard{
  position:relative;
  min-width:0;max-width:100%;
  border-radius:16px;
  border:1px solid rgba(148,163,184,.20);
  background-color:#0a111d;                    /* 代码卡固定深色，两套主题通用 */
  background-image:linear-gradient(168deg,rgba(13,22,38,.96),rgba(8,13,23,.98));
  box-shadow:0 40px 90px -40px rgba(0,0,0,.95),0 0 0 1px var(--surf-3),inset 0 1px 0 var(--surf-1);
  overflow:hidden;
  transform:perspective(1400px) rotateY(-4deg) rotateX(1.5deg);
  transition:transform .6s var(--ease);
}
.codecard:hover{transform:perspective(1400px) rotateY(0) rotateX(0)}
.codecard::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(600px 200px at 80% -10%,rgba(79,123,255,.16),transparent 70%);
}
.codecard__bar{
  display:flex;align-items:center;gap:12px;
  padding:11px 16px;
  border-bottom:1px solid rgba(148,163,184,.13);
  background:rgba(255,255,255,.022);
}
.dots{display:flex;gap:6px}
.dots i{width:9px;height:9px;border-radius:50%;background:#64748b}
.dots i:nth-child(1){background:#f0575a}
.dots i:nth-child(2){background:#f5be4f}
.dots i:nth-child(3){background:#5ac96b}
.codecard__file{font-family:var(--mono);font-size:11.5px;color:#98a5bc;letter-spacing:.02em}
.codecard__lang{
  margin-left:auto;font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;
  color:#22d3ee;padding:3px 8px;border-radius:5px;
  background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.2);
}
.codecard__body{
  margin:0;padding:20px 18px 22px;
  min-width:0;max-width:100%;
  font-family:var(--mono);
  font-size:12.4px;line-height:1.85;
  color:#c8d4ea;
  overflow-x:auto;
  tab-size:2;
}
.codecard__body code{font-family:inherit}
.tk-c{color:#7b8aa3;font-style:italic}
.tk-k{color:#c792ea}
.tk-s{color:#7ee0b3}
.tk-f{color:#82aaff}
.tk-a{color:#ffcb6b}

.floatchip{
  position:absolute;
  display:flex;align-items:center;gap:11px;
  padding:11px 15px;border-radius:13px;
  background:var(--float-bg);
  border:1px solid var(--line-mid);
  box-shadow:0 20px 44px -22px rgba(0,0,0,.95);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  animation:float 7s ease-in-out infinite;
}
.floatchip svg{width:20px;height:20px;flex-shrink:0}
.floatchip b{display:block;font-size:12.5px;font-weight:700;line-height:1.35}
.floatchip span{display:block;font-size:11px;color:var(--faint);line-height:1.4;letter-spacing:.02em}
.floatchip--1{top:-22px;left:-26px}
.floatchip--2{bottom:-24px;right:-18px;animation-delay:-3.4s}
@keyframes float{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-9px)}
}

/* 行业跑马灯 */
.ticker{
  position:relative;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:var(--surf-2);
  overflow:hidden;
  mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
}
.ticker__track{
  display:flex;align-items:center;gap:0;
  padding:15px 0;
  width:max-content;
  animation:marquee 34s linear infinite;
}
.ticker__track span{
  position:relative;
  padding:0 30px;
  font-size:13.5px;font-weight:500;letter-spacing:.14em;
  color:var(--faint);white-space:nowrap;
}
.ticker__track span::after{
  content:"";position:absolute;right:0;top:50%;transform:translateY(-50%);
  width:3px;height:3px;border-radius:50%;background:var(--deco);
}
@keyframes marquee{
  from{transform:translateX(0)}
  to{transform:translateX(-50%)}
}

/* ---------- 5. Sections ---------- */
.section{position:relative;padding:clamp(84px,8.5vw,126px) 0}
/* 锚点跳转时为固定导航留出安全距离，避免标题被压住 */
section[id]{scroll-margin-top:calc(var(--nav-h) + 14px)}
.section--alt{
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%,var(--alt-glow),transparent 70%),
    var(--ink-1);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}

.sec-head{max-width:820px;margin-bottom:clamp(44px,5vw,64px)}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);
  font-size:12px;font-weight:600;letter-spacing:.16em;
  color:var(--blue-soft);
  text-transform:uppercase;
}
.eyebrow span{
  display:block;width:22px;height:1px;background:var(--grad);
}
.sec-head h2,.about__intro h2,.contact__copy h2{
  margin-top:18px;
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.24;
  font-weight:800;
  letter-spacing:-.015em;
}
.sec-lede{
  margin-top:18px;
  font-size:15.5px;line-height:1.85;
  color:var(--dim);
}
.sec-lede--narrow{max-width:380px;margin-top:0;font-size:14.5px}
.sec-head--between{display:flex;justify-content:space-between;align-items:flex-end;gap:48px;max-width:none}

/* ---------- 6. Services ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.svc{
  position:relative;
  padding:30px 26px 26px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:linear-gradient(168deg,var(--surf-1),var(--surf-2));
  overflow:hidden;
  transition:transform .4s var(--ease),border-color .4s var(--ease),box-shadow .4s var(--ease),background .4s var(--ease);
}
.svc::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(79,123,255,.85),rgba(34,211,238,.85),transparent);
  opacity:0;transition:opacity .4s var(--ease);
}
.svc:hover{
  transform:translateY(-5px);
  border-color:rgba(79,123,255,.36);
  background:linear-gradient(168deg,rgba(79,123,255,.09),var(--surf-2));
  box-shadow:0 30px 60px -34px rgba(79,123,255,.6);
}
.svc:hover::before{opacity:1}
.svc__no{
  position:absolute;top:22px;right:24px;
  font-family:var(--mono);font-size:12px;font-weight:600;
  color:var(--deco);letter-spacing:.08em;
}
.svc__icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:13px;
  background:linear-gradient(150deg,rgba(79,123,255,.2),rgba(34,211,238,.08));
  border:1px solid rgba(79,123,255,.24);
  color:var(--icon-fg);
  transition:color .4s var(--ease),transform .4s var(--ease),box-shadow .4s var(--ease);
}
.svc__icon svg{width:23px;height:23px}
.svc:hover .svc__icon{color:#8fe9f7;transform:translateY(-2px);box-shadow:0 10px 26px -12px rgba(34,211,238,.7)}
.svc h3{margin-top:20px;font-size:18.5px;font-weight:700;letter-spacing:-.005em}
.svc p{margin-top:12px;font-size:14.2px;line-height:1.8;color:var(--dim)}
.svc__tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:20px}
.svc__tags li{
  font-size:11.5px;font-weight:500;letter-spacing:.03em;
  padding:4px 10px;border-radius:7px;
  color:var(--chip-fg);
  background:var(--chip-bg);
  border:1px solid var(--chip-bd);
}

.svc-strip{
  display:flex;align-items:center;gap:26px;flex-wrap:wrap;
  margin-top:22px;padding:18px 26px;
  border-radius:14px;
  border:1px dashed var(--line-mid);
  background:var(--surf-2);
}
.svc-strip__label{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;color:var(--blue-soft);
  padding-right:22px;border-right:1px solid var(--line);
}
.svc-strip ul{display:flex;flex-wrap:wrap;gap:10px 30px}
.svc-strip li{
  position:relative;font-size:13.5px;color:var(--dim);
}
.svc-strip li::before{
  content:"";position:absolute;left:-14px;top:50%;transform:translateY(-50%);
  width:4px;height:4px;border-radius:50%;background:rgba(79,123,255,.6);
}

/* ---------- 7. Tech ---------- */
.tech{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:clamp(40px,6vw,84px);align-items:start}
.tech__points{margin-top:36px;display:flex;flex-direction:column;gap:26px}
.tech__points li{
  position:relative;padding-left:24px;
}
.tech__points li::before{
  content:"";position:absolute;left:0;top:10px;
  width:8px;height:8px;border-radius:2px;
  background-color:var(--blue);
  background-image:var(--grad);
  box-shadow:0 0 14px rgba(79,123,255,.8);
}
.tech__points b{display:block;font-size:15.5px;font-weight:700;letter-spacing:.01em}
.tech__points span{display:block;margin-top:6px;font-size:13.8px;line-height:1.8;color:var(--dim)}

.tech__matrix{
  display:grid;grid-template-columns:1fr 1fr;gap:14px;
}
.stackgroup{
  padding:20px 20px 18px;
  border-radius:14px;
  border:1px solid var(--line);
  background:linear-gradient(170deg,var(--surf-1),var(--surf-2));
  transition:border-color .35s var(--ease),transform .35s var(--ease);
}
.stackgroup:hover{border-color:rgba(79,123,255,.3);transform:translateY(-2px)}
.stackgroup h4{
  font-family:var(--mono);
  font-size:11.5px;font-weight:600;letter-spacing:.13em;
  color:var(--blue-soft);text-transform:uppercase;
}
.stackgroup ul{display:flex;flex-wrap:wrap;gap:6px;margin-top:13px}
.stackgroup li{
  font-size:12.5px;line-height:1.5;
  padding:4px 9px;border-radius:6px;
  color:var(--chip-fg);
  background:var(--grid-line);
  border:1px solid var(--chip-bd);
}

/* ---------- 8. Industries ---------- */
.ind-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.ind{
  position:relative;
  padding:30px 24px 32px;
  background:var(--ink);
  transition:background .4s var(--ease);
  overflow:hidden;
}
.ind::after{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;
  background-color:var(--blue);
  background-image:var(--grad);opacity:0;transition:opacity .4s var(--ease);
}
.ind:hover{background:linear-gradient(160deg,rgba(79,123,255,.1),rgba(34,211,238,.03))}
.ind:hover::after{opacity:1}
.ind__no{
  font-family:var(--mono);font-size:11px;font-weight:600;
  color:var(--line-strong);letter-spacing:.1em;
}
.ind h3{margin-top:12px;font-size:18px;font-weight:700}
.ind p{margin-top:9px;font-size:13px;line-height:1.72;color:var(--dim)}

/* ---------- 9. Cases ---------- */
.filters{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:30px}
.filter{
  padding:8px 17px;border-radius:999px;
  font-size:13.5px;font-weight:500;color:var(--dim);
  border:1px solid var(--line);
  background:var(--surf-3);
  transition:color .28s var(--ease),border-color .28s var(--ease),background .28s var(--ease),transform .28s var(--ease);
}
.filter:hover{color:var(--text);border-color:var(--line-mid)}
.filter.is-active{
  color:#fff;font-weight:600;
  background-color:#3d63e8;
  background-image:linear-gradient(120deg,#4f7bff,#1fa8c8);
  border-color:transparent;
  box-shadow:0 10px 24px -14px rgba(79,123,255,.95);
}

.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.case{
  position:relative;
  display:flex;flex-direction:column;
  padding:26px 24px 22px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:linear-gradient(172deg,var(--surf-1),var(--surf-2));
  transition:transform .4s var(--ease),border-color .4s var(--ease),box-shadow .4s var(--ease);
  overflow:hidden;
}
.case::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(420px 180px at 100% 0%,var(--case-glow),transparent 70%);
  opacity:0;transition:opacity .45s var(--ease);pointer-events:none;
}
.case:hover{
  transform:translateY(-5px);
  border-color:rgba(79,123,255,.34);
  box-shadow:0 30px 60px -36px rgba(0,0,0,.95);
}
.case:hover::before{opacity:1}
.case__head{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.case__cat{
  font-size:11px;font-weight:600;letter-spacing:.05em;
  padding:4px 10px;border-radius:6px;
  color:#9dd9f5;
  background:var(--casecat-bg);
  border:1px solid var(--panel-glow-2);
}
.case__org{font-size:11.5px;color:var(--faint);letter-spacing:.03em}
.case h3{margin-top:14px;font-size:17.5px;font-weight:700;letter-spacing:-.005em}
.case p{margin-top:10px;font-size:13.6px;line-height:1.78;color:var(--dim);flex:1}
.case__chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:18px;padding-top:16px;border-top:1px solid var(--chip-bd)}
.case__chips li{
  font-size:11px;letter-spacing:.02em;color:var(--chip-fg);
  padding:3px 8px;border-radius:5px;
  background:var(--chip-bg);
}
.case__note{
  margin-top:26px;font-size:13px;color:var(--faint);
  padding-left:16px;border-left:2px solid rgba(79,123,255,.35);
}
.case.is-hidden{display:none}

/* ---------- 9b. Clients ---------- */
.section--clients{border-top:1px solid var(--line)}
.clients__head{max-width:760px;margin-bottom:clamp(34px,4vw,48px)}
.clientwall{
  display:grid;grid-template-columns:repeat(6,1fr);
  gap:1px;background:var(--line);
  border:1px solid var(--line);
  border-radius:16px;overflow:hidden;
}
.client{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;
  min-height:104px;padding:18px 12px;
  background:var(--ink);
  text-align:center;
  transition:background .35s var(--ease);
}
.client:hover{background:linear-gradient(160deg,rgba(79,123,255,.09),transparent 72%)}
.client img{
  max-width:132px;max-height:38px;width:auto;height:auto;object-fit:contain;
  filter:var(--logo-filter);
  transition:filter .35s var(--ease),opacity .35s var(--ease);
}
.client:hover img{filter:none}
.client__name{font-size:12.5px;font-weight:600;color:var(--text-soft);line-height:1.5}
.client__en{font-family:var(--mono);font-size:9.5px;font-weight:600;letter-spacing:.13em;color:var(--faint);text-transform:uppercase}

/* ---------- 10. Process ---------- */
.steps{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:18px;
  overflow:hidden;
}
.step{
  position:relative;
  padding:34px 30px 30px;
  background:var(--ink);
  transition:background .4s var(--ease);
}
.step::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background-color:var(--blue);
  background-image:var(--grad);opacity:0;transition:opacity .4s var(--ease);
}
.step:hover{background:linear-gradient(170deg,rgba(79,123,255,.08),transparent 70%)}
.step:hover::before{opacity:1}
.step__no{
  display:block;
  font-family:var(--mono);font-size:12px;font-weight:600;letter-spacing:.14em;
  color:var(--blue-soft);
}
.step h3{margin-top:14px;font-size:19px;font-weight:700}
.step p{margin-top:10px;font-size:13.8px;line-height:1.78;color:var(--dim)}
.step__out{
  display:inline-block;margin-top:18px;
  font-size:11.5px;font-weight:500;letter-spacing:.03em;
  color:var(--chip-fg);
  padding:5px 10px;border-radius:6px;
  background:var(--chip-bg);
  border:1px solid var(--chip-bd);
}

/* ---------- 11. Custom ---------- */
.custom{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.custom__panel{
  position:relative;
  padding:38px 34px 34px;
  border-radius:20px;
  border:1px solid var(--line);
  background:linear-gradient(168deg,var(--surf-1),var(--surf-2));
  overflow:hidden;
  transition:border-color .4s var(--ease),transform .4s var(--ease);
}
.custom__panel::after{
  content:"";position:absolute;right:-80px;top:-80px;
  width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,var(--panel-glow),transparent 68%);
  filter:blur(20px);
  pointer-events:none;
}
.custom__panel:hover{border-color:rgba(79,123,255,.32);transform:translateY(-4px)}
.custom__panel--accent::after{background:radial-gradient(circle,var(--panel-glow-2),transparent 68%)}
.custom__tag{
  font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.14em;
  color:var(--blue-soft);
}
.custom__panel h3{margin-top:14px;font-size:23px;font-weight:750;letter-spacing:-.01em}
.custom__panel p{margin-top:14px;font-size:14.4px;line-height:1.82;color:var(--dim)}
.checklist{margin-top:24px;display:grid;gap:11px}
.checklist li{
  position:relative;padding-left:26px;
  font-size:13.8px;color:var(--text-soft);
}
.checklist li::before{
  content:"";position:absolute;left:0;top:6px;
  width:15px;height:15px;border-radius:50%;
  background:var(--case-glow);
  border:1px solid rgba(79,123,255,.35);
}
.checklist li::after{
  content:"";position:absolute;left:5px;top:9.5px;
  width:5px;height:2.5px;
  border-left:1.6px solid var(--cyan);
  border-bottom:1.6px solid var(--cyan);
  transform:rotate(-45deg);
}

/* ---------- 12. About ---------- */
.about{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:clamp(40px,6vw,80px);align-items:start}
.about__intro .sec-lede + .sec-lede{margin-top:14px}
.about__cards{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.vcard{
  padding:26px 24px;
  border-radius:16px;
  border:1px solid var(--line);
  background:linear-gradient(170deg,var(--surf-1),var(--surf-2));
  transition:border-color .35s var(--ease),transform .35s var(--ease);
}
.vcard:hover{border-color:rgba(79,123,255,.3);transform:translateY(-3px)}
.vcard h4{
  font-family:var(--mono);font-size:11px;font-weight:600;
  letter-spacing:.14em;color:var(--blue-soft);
}
.vcard__big{margin-top:12px;font-size:16px;font-weight:700;line-height:1.5;letter-spacing:.01em}
.vcard p:last-child{margin-top:10px;font-size:13px;line-height:1.78;color:var(--dim)}

/* ---------- 13. Contact ---------- */
.section--cta{
  background:
    radial-gradient(ellipse 70% 60% at 12% 0%,var(--case-glow),transparent 62%),
    radial-gradient(ellipse 60% 60% at 92% 20%,rgba(34,211,238,.1),transparent 62%),
    var(--ink);
  border-top:1px solid var(--line);
}
.contact{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.86fr);gap:clamp(40px,6vw,80px);align-items:start}
.contact__info{margin-top:38px;display:grid;gap:2px;border-top:1px solid var(--line)}
.contact__info li{
  display:flex;align-items:baseline;gap:18px;
  padding:16px 0;border-bottom:1px solid var(--line);
}
.contact__info span{
  flex:0 0 84px;
  font-size:12px;letter-spacing:.08em;color:var(--faint);
}
.contact__info a,.contact__info p{
  font-size:15.5px;font-weight:600;letter-spacing:.01em;
  transition:color .25s var(--ease);
}
.contact__info a:hover{color:var(--cyan)}

.qrcard{
  position:relative;
  padding:34px 30px 30px;
  border-radius:20px;
  border:1px solid var(--line-mid);
  background:var(--card-strong);
  box-shadow:var(--shadow);
  text-align:center;
  overflow:hidden;
}
.qrcard::before{
  content:"";position:absolute;left:-60px;top:-60px;
  width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,var(--panel-glow),transparent 68%);
  filter:blur(18px);pointer-events:none;
}
.qrcard__frame{
  position:relative;
  width:min(256px,64vw);
  margin:0 auto;
  padding:11px;
  border-radius:14px;
  background:#fff;
  box-shadow:0 18px 40px -22px rgba(0,0,0,.9),0 0 0 1px var(--surf-4);
}
.qrcard__frame img{display:block;width:100%;height:auto;border-radius:6px}
/* 扫描取景角标 */
.qrcard__frame::before,.qrcard__frame::after{
  content:"";position:absolute;width:16px;height:16px;
  border:2px solid var(--cyan);opacity:.9;
}
.qrcard__frame::before{top:-6px;left:-6px;border-right:0;border-bottom:0;border-radius:5px 0 0 0}
.qrcard__frame::after{bottom:-6px;right:-6px;border-left:0;border-top:0;border-radius:0 0 5px 0}
.qrcard h3{margin-top:22px;font-size:17px;font-weight:700;letter-spacing:.01em}
.qrcard p{margin-top:9px;font-size:13.4px;line-height:1.75;color:var(--dim)}
.qrcard__note{margin-top:12px;font-size:12.5px;color:var(--faint)}
.qrcard__note a{color:var(--link-accent);border-bottom:1px solid var(--link-line);transition:color .25s var(--ease)}
.qrcard__note a:hover{color:var(--cyan)}

/* ---------- 14. Footer ---------- */
.footer{
  padding:clamp(56px,6vw,76px) 0 26px;
  background:var(--ink-1);
  border-top:1px solid var(--line);
}
.footer__top{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1.95fr);gap:clamp(36px,6vw,80px)}
.footer__slogan{
  margin-top:22px;
  font-size:15px;font-weight:700;letter-spacing:.14em;
  color:var(--link-accent);
  width:max-content;max-width:100%;
  overflow-wrap:anywhere;
}
@supports ((-webkit-background-clip:text) or (background-clip:text)){
  .footer__slogan{
    background:var(--grad-text);
    -webkit-background-clip:text;background-clip:text;
    -webkit-text-fill-color:transparent;color:transparent;
  }
}
.footer__desc{margin-top:12px;font-size:12.5px;line-height:1.8;color:var(--faint)}
.footer__cols{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.footer__col{display:flex;flex-direction:column;gap:6px;min-width:0;overflow-wrap:anywhere}
.footer__col h5{
  font-size:12px;font-weight:700;letter-spacing:.1em;
  color:var(--text-soft);margin-bottom:4px;
}
.footer__col a,.footer__col p{
  font-size:13px;color:var(--faint);line-height:1.6;padding:4px 0;
  transition:color .25s var(--ease);
  width:max-content;max-width:100%;
}
.footer__col a:hover{color:var(--cyan)}
.footer__bottom{
  margin-top:clamp(36px,5vw,54px);padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--footer-fg);
}

.totop{
  position:fixed;right:24px;bottom:24px;z-index:70;
  width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  color:var(--text);
  background:var(--elev);
  border:1px solid var(--line-mid);
  backdrop-filter:blur(12px);
  box-shadow:0 14px 30px -16px rgba(0,0,0,.9);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .35s var(--ease),transform .35s var(--ease),visibility .35s,border-color .25s,color .25s;
}
.totop svg{width:19px;height:19px}
.totop.is-show{opacity:1;visibility:visible;transform:none}
.totop:hover{color:#fff;border-color:rgba(79,123,255,.55)}

/* ---------- 15. Responsive ---------- */
/* 901–1280 之间 8 个导航入口 + 品牌 + 操作区会挤到折行，这里统一收紧 */
@media (max-width:1280px){
  .nav__inner{gap:14px}
  .nav__links{gap:0}
  .nav__links a{padding:9px 9px;font-size:13.5px}
  .nav__actions{gap:8px}
  .brand__text strong{font-size:16px}
}
@media (max-width:1120px){
  .brand__text em{display:none}
  .nav__actions .btn--sm{padding:0 14px;font-size:13px}
}
/* 901–1020：8 个入口 + CTA 放不下，先收起 CTA（移动菜单与首屏仍可联系我们） */
@media (max-width:1020px){
  .nav__actions .btn--sm{display:none}
  .nav__links a{padding:9px 8px;font-size:13px}
}
@media (max-width:1080px){
  .hero__inner{grid-template-columns:minmax(0,1fr);gap:52px;padding-bottom:64px}
  .hero__copy{max-width:none}
  .hero__visual{max-width:620px;width:100%}
  .floatchip--1{left:auto;right:-8px;top:-30px}
  .floatchip--2{right:auto;left:-8px;bottom:-26px}
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .ind-grid{grid-template-columns:repeat(2,1fr)}
  .case-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .tech{grid-template-columns:minmax(0,1fr);gap:44px}
  .about{grid-template-columns:minmax(0,1fr);gap:40px}
  .contact{grid-template-columns:minmax(0,1fr);gap:44px}
  .footer__top{grid-template-columns:minmax(0,1fr);gap:40px}
  .custom{grid-template-columns:1fr}
  .sec-head--between{flex-direction:column;align-items:flex-start;gap:18px}
  .sec-lede--narrow{max-width:560px}
}

@media (max-width:900px){
  :root{--nav-h:66px}
  .nav__links{display:none}
  .iconbtn{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;padding:0;border-radius:11px;
  border:1px solid var(--line-mid);
  background:var(--surf-3);
  color:var(--text);
  transition:background .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease),color .25s var(--ease);
}
.iconbtn:hover{background:var(--surf-4);border-color:var(--line-strong);transform:translateY(-1px);color:var(--text)}
.iconbtn .ico{width:18px;height:18px;display:none}
html[data-theme-mode="auto"]  .iconbtn--theme .ico--auto{display:block}
html[data-theme-mode="light"] .iconbtn--theme .ico--light{display:block}
html[data-theme-mode="dark"]  .iconbtn--theme .ico--dark{display:block}
.iconbtn--lang{width:auto;min-width:46px;padding:0 11px;font-size:12.5px;font-weight:700;letter-spacing:.08em}
.iconbtn--lang .lang-cur{font-family:var(--mono);line-height:1}

.nav__toggle{display:flex}
  .nav__actions .btn--sm{display:none}
  .hero{padding-top:calc(var(--nav-h) + 52px)}
  .hero__title{font-size:clamp(32px,7.4vw,44px)}
  .hero__stats{gap:22px 26px;grid-template-columns:repeat(2,1fr);margin-top:40px}
  .codecard{transform:none}
  .floatchip{padding:9px 12px}
  .floatchip b{font-size:11.5px}
  .floatchip span{font-size:11px}
  .footer__cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px 24px}
  .clientwall{grid-template-columns:repeat(4,1fr)}
}

@media (max-width:720px){
  .container{padding:0 20px}
  .section{padding:66px 0}
  .hero__cta{gap:10px}
  .hero__cta .btn{flex:1 1 auto}
  .svc-grid{grid-template-columns:1fr}
  .case-grid{grid-template-columns:1fr}
  .ind-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .about__cards{grid-template-columns:1fr}
  .tech__matrix{grid-template-columns:1fr}
  .qrcard{padding:28px 22px 26px}
  .custom__panel{padding:30px 24px}
  .contact__info li{flex-direction:column;gap:6px}
  .contact__info span{flex:none}
  .footer__bottom{flex-direction:column;gap:8px}
  .totop{right:16px;bottom:16px}
  .svc-strip{gap:14px;padding:16px 20px}
  .svc-strip__label{padding-right:0;border-right:0;width:100%}
  .svc-strip ul{gap:8px 24px}
  .clientwall{grid-template-columns:repeat(3,1fr)}
  .client{min-height:92px;padding:14px 10px}
}

@media (max-width:420px){
  .codecard__body{font-size:11.2px;padding:16px 14px 18px}
  .hero__stats b{font-size:26px}
  .hero__stats dd{font-size:11.5px}
  .floatchip--2{display:none}
  .badge{font-size:11px;padding:6px 12px 6px 10px;letter-spacing:.03em}
  .mmenu__list a{font-size:19px;padding:15px 2px}
  .iconbtn{width:34px;height:34px;border-radius:9px}
  .iconbtn--lang{min-width:42px;padding:0 9px;font-size:12px}
  .clientwall{grid-template-columns:repeat(2,1fr)}
  .client img{max-width:112px}
}

/* 动效偏好 */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html.js .reveal{opacity:1;transform:none}
  .codecard{transform:none}
}