/* ==========================================================================
   长安现代口腔 · 官网样式表
   设计基调：温润的现代医疗 —— 青蓝主色 + 暖沙底色 + 大圆角 + 微动效
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root{
  /* 品牌 */
  --brand:       #3E93A3;   /* 主色（可点击 / CTA） */
  --brand-600:   #2E7C8B;
  --brand-700:   #1F5F6B;
  --brand-900:   #0E2E36;
  --brand-lt:    #7EC2CE;   /* Logo 原色 */
  --brand-100:   #D9EDF1;
  --brand-50:    #EDF7F9;

  /* 中性 */
  --ink:         #0E2E36;
  --ink-2:       #3C5C64;
  --ink-3:       #7A939A;
  --ink-4:       #A9BCC1;
  --line:        #E3ECEE;
  --line-2:      #EFF4F5;
  --paper:       #FFFFFF;
  --bg:          #FAFBFB;
  --sand:        #F7F2EA;
  --sand-2:      #EFE7DA;

  /* 点缀 */
  --blush:       #D4578F;   /* 吉祥物粉 · 仅儿牙 */
  --blush-50:    #FDF0F6;
  --gold:        #C6A15B;

  /* 阴影 */
  --sh-xs: 0 1px 2px rgba(14,46,54,.05);
  --sh-sm: 0 2px 8px rgba(14,46,54,.06);
  --sh-md: 0 8px 24px -6px rgba(14,46,54,.10), 0 2px 6px rgba(14,46,54,.04);
  --sh-lg: 0 24px 56px -18px rgba(14,46,54,.18), 0 8px 20px -8px rgba(14,46,54,.06);
  --sh-xl: 0 40px 90px -30px rgba(14,46,54,.26);

  /* 圆角 */
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 24px;
  --r-xl: 32px;
  --r-2xl: 40px;
  --r-pill: 999px;

  /* 版心 */
  --wrap: 1200px;
  --gutter: 24px;
  --sect: 96px;

  /* 字体 */
  --font: "PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC",
          "Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --serif: "Optima","Palatino Linotype","Songti SC","STSong",Georgia,"Times New Roman",serif;
  --mono: "SF Mono","JetBrains Mono","Consolas",monospace;

  --ease: cubic-bezier(.22,.61,.36,1);
  --ease-out: cubic-bezier(.16,1,.3,1);
}

/* ---------- 2. 重置 ---------- */
*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; scroll-padding-top:88px; }
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,svg,video{ display:block; max-width:100%; }
a{ color:inherit; text-decoration:none; }
button{ font:inherit; color:inherit; border:0; background:none; cursor:pointer; }
input,textarea,select{ font:inherit; color:inherit; }
ul,ol{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4,h5,p{ margin:0; }
::selection{ background:var(--brand-100); color:var(--brand-900); }

/* ---------- 3. 排版 ---------- */
h1,h2,h3,h4{ color:var(--ink); font-weight:700; line-height:1.25; letter-spacing:-.01em; }
.h-xxl{ font-size:clamp(32px,4.6vw,58px); line-height:1.14; letter-spacing:-.025em; }
.h-xl { font-size:clamp(28px,3.6vw,44px); line-height:1.2;  letter-spacing:-.02em; }
.h-lg { font-size:clamp(22px,2.4vw,30px); line-height:1.3; }
.h-md { font-size:clamp(18px,1.6vw,21px); line-height:1.4; }
.h-sm { font-size:16px; line-height:1.5; }
.lead{ font-size:clamp(16px,1.35vw,18px); line-height:1.9; color:var(--ink-2); }
.muted{ color:var(--ink-3); }
.small{ font-size:14px; line-height:1.7; }
.tiny{ font-size:12.5px; line-height:1.6; }
.serif{ font-family:var(--serif); }
.num{ font-family:var(--serif); font-variant-numeric:tabular-nums; letter-spacing:.01em; }

/* 眉题 */
.eyebrow{
  display:inline-flex; align-items:center; gap:9px;
  font-size:12.5px; font-weight:600; letter-spacing:.16em; text-transform:uppercase;
  color:var(--brand-600);
}
.eyebrow::before{ content:""; width:22px; height:1.5px; background:currentColor; opacity:.5; border-radius:2px; }
.eyebrow.no-line::before{ display:none; }

/* 强调下划线 */
.hl{ position:relative; display:inline-block; color:var(--brand-700); }
.hl::after{
  content:""; position:absolute; left:-2%; right:-2%; bottom:.06em; height:.34em;
  background:linear-gradient(90deg,var(--brand-100),rgba(126,194,206,.35));
  border-radius:6px; z-index:-1;
}

/* ---------- 4. 布局 ---------- */
.wrap{ width:100%; max-width:var(--wrap); margin-inline:auto; padding-inline:var(--gutter); }
.wrap-wide{ max-width:1340px; }
.sect{ padding-block:var(--sect); position:relative; }
.sect-tight{ padding-block:64px; }
.sect-sand{ background:var(--sand); }
.sect-mist{ background:linear-gradient(180deg,#FFF,var(--brand-50) 40%,#FFF); }
.sect-dark{ background:var(--brand-900); color:#CFE3E7; }
.sect-dark h1,.sect-dark h2,.sect-dark h3,.sect-dark h4{ color:#fff; }
.sect-dark .muted{ color:#8FB0B7; }

.sec-head{ max-width:720px; margin-bottom:52px; }
.sec-head.center{ margin-inline:auto; text-align:center; }
.sec-head.center .eyebrow{ justify-content:center; }
.sec-head .h-xl{ margin-top:16px; }
.sec-head p{ margin-top:18px; }

.flex{ display:flex; }
.between{ justify-content:space-between; }
.center{ align-items:center; }
.wrapflex{ flex-wrap:wrap; }
.gap-sm{ gap:12px; } .gap{ gap:20px; } .gap-lg{ gap:32px; }
.grid{ display:grid; }
.g2{ grid-template-columns:repeat(2,1fr); }
.g3{ grid-template-columns:repeat(3,1fr); }
.g4{ grid-template-columns:repeat(4,1fr); }
.mt-s{ margin-top:16px } .mt{ margin-top:28px } .mt-l{ margin-top:44px } .mt-xl{ margin-top:64px }
.mb-s{ margin-bottom:16px } .mb{ margin-bottom:28px }
.tc{ text-align:center }

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:9px;
  padding:14px 26px; border-radius:var(--r-pill);
  font-size:15px; font-weight:600; letter-spacing:.01em; white-space:nowrap;
  transition:transform .28s var(--ease), box-shadow .28s var(--ease),
             background-color .22s var(--ease), color .22s var(--ease), border-color .22s var(--ease);
  cursor:pointer; border:1.5px solid transparent;
}
.btn .ico{ width:18px; height:18px; flex:none; }
.btn-primary{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-600) 100%);
  color:#fff; box-shadow:0 10px 24px -10px rgba(62,147,163,.7);
}
.btn-primary:hover{ transform:translateY(-2px); box-shadow:0 18px 34px -12px rgba(62,147,163,.65); }
.btn-dark{ background:var(--brand-900); color:#fff; }
.btn-dark:hover{ transform:translateY(-2px); background:#0A242B; }
.btn-ghost{ border-color:var(--line); background:#fff; color:var(--ink); box-shadow:var(--sh-xs); }
.btn-ghost:hover{ border-color:var(--brand-lt); color:var(--brand-700); transform:translateY(-2px); box-shadow:var(--sh-md); }
.btn-onDark{ border-color:rgba(255,255,255,.24); color:#fff; }
.btn-onDark:hover{ background:rgba(255,255,255,.1); border-color:rgba(255,255,255,.5); }
.btn-lg{ padding:17px 34px; font-size:16px; }
.btn-sm{ padding:10px 18px; font-size:13.5px; }
.btn-block{ width:100%; }

.link-arrow{
  display:inline-flex; align-items:center; gap:7px; font-weight:600; font-size:14.5px;
  color:var(--brand-600); transition:gap .25s var(--ease),color .2s;
}
.link-arrow:hover{ gap:12px; color:var(--brand-700); }
.link-arrow .ico{ width:16px; height:16px; }

/* ---------- 6. 顶栏 ---------- */
.nav{
  position:fixed; inset:0 0 auto 0; z-index:90;
  transition:background-color .35s var(--ease), box-shadow .35s var(--ease), backdrop-filter .35s;
}
.nav-in{
  display:flex; align-items:center; gap:28px;
  height:76px; max-width:1340px; margin-inline:auto; padding-inline:var(--gutter);
}
.nav.scrolled{
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(180%) blur(18px); -webkit-backdrop-filter:saturate(180%) blur(18px);
  box-shadow:0 1px 0 var(--line), 0 10px 30px -20px rgba(14,46,54,.35);
}
.brand{ display:flex; align-items:center; gap:11px; flex:none; }
.brand img{ height:30px; width:auto; }
.brand-txt{ display:flex; flex-direction:column; line-height:1.1; }
.brand-txt b{ font-size:15.5px; color:var(--ink); letter-spacing:.02em; }
.brand-txt span{ font-size:10px; letter-spacing:.14em; color:var(--ink-4); text-transform:uppercase; }

.nav-links{ display:flex; align-items:center; gap:4px; margin-left:auto; }
.nav-links a{
  position:relative; padding:9px 15px; border-radius:var(--r-pill);
  font-size:14.5px; font-weight:500; color:var(--ink-2);
  transition:color .2s,background-color .2s;
}
.nav-links a:hover{ color:var(--brand-700); background:var(--brand-50); }
.nav-links a.active{ color:var(--brand-700); font-weight:600; }
.nav-links a.active::after{
  content:""; position:absolute; left:50%; bottom:1px; width:16px; height:2.5px;
  transform:translateX(-50%); border-radius:2px; background:var(--brand);
}
.nav-cta{ display:flex; align-items:center; gap:10px; flex:none; }
.nav-tel{
  display:inline-flex; align-items:center; gap:7px; font-weight:600; font-size:14.5px;
  color:var(--brand-700); font-variant-numeric:tabular-nums;
}
.nav-tel .ico{ width:16px; height:16px; }
.burger{ display:none; width:42px; height:42px; border-radius:12px; align-items:center; justify-content:center; }
.burger span{ display:block; width:19px; height:1.8px; background:var(--ink); border-radius:2px; transition:.3s var(--ease); }
.burger span+span{ margin-top:5px; }
body.nav-open .burger span:nth-child(1){ transform:translateY(6.8px) rotate(45deg); }
body.nav-open .burger span:nth-child(2){ opacity:0; }
body.nav-open .burger span:nth-child(3){ transform:translateY(-6.8px) rotate(-45deg); }

.drawer{
  position:fixed; inset:76px 0 0 0; z-index:89; background:rgba(255,255,255,.98);
  backdrop-filter:blur(20px); padding:20px var(--gutter) 40px;
  display:flex; flex-direction:column; gap:2px;
  transform:translateY(-12px); opacity:0; pointer-events:none;
  transition:opacity .3s var(--ease),transform .3s var(--ease);
  overflow-y:auto;
}
body.nav-open .drawer{ opacity:1; transform:none; pointer-events:auto; }
.drawer a{
  padding:15px 4px; font-size:17px; font-weight:600; color:var(--ink);
  border-bottom:1px solid var(--line-2);
}
.drawer .btn{ margin-top:20px; }

/* ---------- 7. 首屏 ---------- */
.hero{ position:relative; padding-top:132px; padding-bottom:80px; overflow:hidden; }
.hero::before{
  content:""; position:absolute; z-index:0;
  width:820px; height:820px; right:-220px; top:-320px; border-radius:50%;
  background:radial-gradient(circle at 50% 50%,rgba(126,194,206,.30),rgba(126,194,206,0) 68%);
}
.hero::after{
  content:""; position:absolute; z-index:0;
  width:520px; height:520px; left:-200px; bottom:-260px; border-radius:50%;
  background:radial-gradient(circle at 50% 50%,rgba(212,87,143,.08),rgba(212,87,143,0) 70%);
}
.hero .wrap{ position:relative; z-index:1; }
.hero-grid{ display:grid; grid-template-columns:minmax(0,1.06fr) minmax(0,1fr); gap:64px; align-items:center; }
.hero h1{ margin-top:22px; }
.hero .lead{ margin-top:24px; max-width:540px; }
.hero-actions{ display:flex; flex-wrap:wrap; gap:12px; margin-top:34px; }
.hero-trust{
  display:flex; flex-wrap:wrap; gap:10px 22px; margin-top:34px; padding-top:26px;
  border-top:1px solid var(--line);
}
.hero-trust li{ display:flex; align-items:center; gap:8px; font-size:13.5px; color:var(--ink-3); }
.hero-trust .ico{ width:16px; height:16px; color:var(--brand); flex:none; }

.hero-visual{ position:relative; }
.hero-shot{
  position:relative; border-radius:var(--r-2xl); overflow:hidden;
  box-shadow:var(--sh-xl); aspect-ratio:4/3.4; background:var(--brand-50);
}
.hero-shot img{ width:100%; height:100%; object-fit:cover; object-position:35% center; }
.hero-shot::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(180deg,rgba(14,46,54,0) 45%,rgba(14,46,54,.45));
}
.hero-badge{
  position:absolute; left:22px; right:22px; bottom:22px; z-index:2;
  display:flex; align-items:center; gap:12px;
  padding:13px 16px; border-radius:var(--r-md);
  background:rgba(255,255,255,.16); border:1px solid rgba(255,255,255,.28);
  backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px);
}
.hero-badge b{ display:block; font-size:13.5px; color:#fff; }
.hero-badge span{ display:block; font-size:11.5px; color:rgba(255,255,255,.78); }
.hero-badge .ico{ width:20px; height:20px; color:#fff; flex:none; }

.hero-chip{
  position:absolute; background:#fff; border-radius:var(--r-lg);
  box-shadow:var(--sh-lg); padding:16px 18px; display:flex; align-items:center; gap:13px;
}
.hero-chip-1{ top:34px; left:-34px; animation:float 7s var(--ease) infinite; }
.hero-chip-2{ bottom:96px; right:-30px; animation:float 8.5s var(--ease) infinite .8s; }
.hero-chip img{ width:44px; height:44px; object-fit:contain; }
.hero-chip .big{ font-family:var(--serif); font-size:24px; font-weight:700; color:var(--brand-700); line-height:1; }
.hero-chip .lbl{ font-size:11.5px; color:var(--ink-3); margin-top:3px; }
@keyframes float{ 0%,100%{ transform:translateY(0) } 50%{ transform:translateY(-11px) } }

/* 滚动信任条 */
.marquee{ overflow:hidden; border-block:1px solid var(--line); background:#fff; }
.marquee-track{ display:flex; width:max-content; animation:slide 46s linear infinite; }
.marquee:hover .marquee-track{ animation-play-state:paused; }
.marquee-track span{
  display:inline-flex; align-items:center; gap:10px; padding:17px 30px;
  font-size:13.5px; color:var(--ink-3); white-space:nowrap;
}
.marquee-track span::after{ content:""; width:4px; height:4px; border-radius:50%; background:var(--brand-100); margin-left:20px; }
@keyframes slide{ from{ transform:translateX(0) } to{ transform:translateX(-50%) } }

/* ---------- 8. 数据条 ---------- */
.stats{ display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:var(--line); border-radius:var(--r-lg); overflow:hidden; }
.stat{ background:#fff; padding:36px 28px; }
.stat .big{ font-family:var(--serif); font-size:clamp(34px,4vw,46px); font-weight:700; color:var(--brand-700); line-height:1; }
.stat .unit{ font-size:15px; font-weight:600; color:var(--brand); margin-left:3px; }
.stat .lbl{ margin-top:12px; font-size:14px; color:var(--ink-3); }

/* ---------- 9. 卡片通用 ---------- */
.card{
  background:#fff; border:1px solid var(--line); border-radius:var(--r-lg);
  transition:transform .4s var(--ease), box-shadow .4s var(--ease), border-color .3s;
}
.card:hover{ transform:translateY(-4px); box-shadow:var(--sh-lg); border-color:transparent; }

/* 诊疗品类卡 */
.cat-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.cat{
  position:relative; display:flex; flex-direction:column; overflow:hidden;
  background:#fff; border:1px solid var(--line); border-radius:var(--r-lg);
  transition:transform .45s var(--ease),box-shadow .45s var(--ease),border-color .3s;
}
.cat:hover{ transform:translateY(-5px); box-shadow:var(--sh-lg); border-color:transparent; }
.cat-img{ aspect-ratio:16/10; overflow:hidden; background:var(--brand-50); }
.cat-img img{ width:100%; height:100%; object-fit:cover; transition:transform .8s var(--ease); }
.cat:hover .cat-img img{ transform:scale(1.05); }
.cat-body{ padding:24px 24px 26px; flex:1; display:flex; flex-direction:column; }
.cat-idx{
  position:absolute; top:14px; right:16px; z-index:2;
  font-family:var(--serif); font-size:12px; letter-spacing:.1em;
  padding:5px 11px; border-radius:var(--r-pill);
  background:rgba(255,255,255,.88); backdrop-filter:blur(8px); color:var(--brand-700); font-weight:700;
}
.cat h3{ font-size:19px; }
.cat .cat-en{ font-size:10.5px; letter-spacing:.16em; text-transform:uppercase; color:var(--ink-4); margin-top:5px; }
.cat p{ margin-top:12px; font-size:14px; color:var(--ink-3); line-height:1.7; }
.cat .tags{ display:flex; flex-wrap:wrap; gap:7px; margin-top:18px; }
.cat .link-arrow{ margin-top:20px; }

.tag{
  font-size:12px; padding:5px 11px; border-radius:var(--r-pill);
  background:var(--brand-50); color:var(--brand-700); font-weight:500; white-space:nowrap;
}
.tag-sand{ background:var(--sand); color:#8A6A3C; }
.tag-blush{ background:var(--blush-50); color:#A63A6C; }
.tag-line{ background:#fff; border:1px solid var(--line); color:var(--ink-3); }

/* 特色大卡 */
.feature{
  position:relative; border-radius:var(--r-xl); overflow:hidden; min-height:420px;
  display:flex; align-items:flex-end; padding:34px; color:#fff;
  box-shadow:var(--sh-lg); isolation:isolate;
}
.feature img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; z-index:-2; transition:transform 1s var(--ease); }
.feature:hover img{ transform:scale(1.04); }
.feature::after{
  content:""; position:absolute; inset:0; z-index:-1;
  background:linear-gradient(180deg,rgba(14,46,54,.05) 30%,rgba(11,40,47,.88));
}
.feature h3{ color:#fff; font-size:clamp(20px,2vw,25px); }
.feature p{ margin-top:12px; font-size:14.5px; color:rgba(255,255,255,.86); line-height:1.75; }
.feature .tag{ background:rgba(255,255,255,.18); color:#fff; border:1px solid rgba(255,255,255,.26); }
.feature .fnum{
  font-family:var(--serif); font-size:13px; letter-spacing:.16em; opacity:.7; margin-bottom:14px; display:block;
}

/* ---------- 10. 医生 ---------- */
.doc-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:22px; }
.doc{
  background:#fff; border:1px solid var(--line); border-radius:var(--r-lg); overflow:hidden;
  transition:transform .42s var(--ease),box-shadow .42s var(--ease),border-color .3s;
  display:flex; flex-direction:column;
}
.doc:hover{ transform:translateY(-5px); box-shadow:var(--sh-lg); border-color:transparent; }
.doc-photo{
  position:relative; aspect-ratio:4/3.1; overflow:hidden;
  background:linear-gradient(165deg,var(--brand-50),#fff 65%);
}
.doc-photo img{ position:absolute; inset:0; width:100%; height:100%; object-fit:contain; object-position:bottom center; transition:transform .7s var(--ease); }
.doc:hover .doc-photo img{ transform:scale(1.035) translateY(-2px); }
.doc-role{
  position:absolute; top:13px; left:13px; z-index:2;
  font-size:11.5px; font-weight:600; padding:5px 12px; border-radius:var(--r-pill);
  background:rgba(255,255,255,.9); backdrop-filter:blur(8px); color:var(--brand-700);
}
.doc-body{ padding:18px 20px 22px; flex:1; display:flex; flex-direction:column; }
.doc-name{ display:flex; align-items:baseline; gap:8px; }
.doc-name b{ font-size:18px; color:var(--ink); }
.doc-name span{ font-size:12px; color:var(--ink-4); }
.doc-meta{ margin-top:9px; font-size:12.5px; color:var(--ink-3); display:flex; flex-wrap:wrap; gap:5px 12px; }
.doc-meta i{ font-style:normal; color:var(--ink-4); }
.doc-good{ margin-top:14px; font-size:13px; color:var(--ink-2); line-height:1.7; }
.doc-good b{ color:var(--brand-700); font-weight:600; }
.doc-motto{
  margin-top:auto; padding-top:16px; border-top:1px dashed var(--line);
  font-size:12.5px; color:var(--ink-3); font-style:italic; display:flex; gap:8px;
}
.doc-motto .ico{ width:14px; height:14px; flex:none; color:var(--brand-lt); margin-top:3px; }

/* ---------- 11. 设备 ---------- */
.dev-rail{ display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
.dev{
  background:#fff; border:1px solid var(--line); border-radius:var(--r-lg); padding:24px;
  transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .3s;
  display:flex; flex-direction:column;
}
.dev:hover{ transform:translateY(-4px); box-shadow:var(--sh-md); border-color:var(--brand-100); }
.dev-img{
  height:132px; display:flex; align-items:center; justify-content:center;
  border-radius:var(--r-md); background:linear-gradient(160deg,#F7FAFB,#EEF5F7); margin-bottom:18px;
  overflow:hidden;
}
.dev-img img{ max-height:112px; width:auto; object-fit:contain; mix-blend-mode:multiply; }
.dev h4{ font-size:15.5px; }
.dev .dev-spec{ margin-top:6px; font-size:11.5px; color:var(--ink-4); letter-spacing:.02em; }
.dev p{ margin-top:12px; font-size:13px; color:var(--ink-3); line-height:1.7; flex:1; }

/* ---------- 12. 案例对比 ---------- */
.case-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:26px; }
.case-grid .cmp-hero{ grid-column:span 2; }
.cmp{
  position:relative; border-radius:var(--r-lg); overflow:hidden; background:#0E2E36;
  aspect-ratio:2/1; cursor:ew-resize; user-select:none; touch-action:pan-y;
  box-shadow:var(--sh-md);
}
.cmp-hero{ aspect-ratio:2.4/1; }
.cmp img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; pointer-events:none; }
/* .layer 为上层，裁切到左侧 --x 区域（显示“术前”），底层露出“术后” */
.cmp .layer{ clip-path:inset(0 calc(100% - var(--x,50%)) 0 0); }
.cmp.dragging{ cursor:grabbing; }
.cmp-handle{
  position:absolute; top:0; bottom:0; left:var(--x,50%); width:2px; background:#fff;
  box-shadow:0 0 0 1px rgba(14,46,54,.14); z-index:3; pointer-events:none;
}
.cmp-handle::after{
  content:""; position:absolute; top:50%; left:50%; width:40px; height:40px;
  transform:translate(-50%,-50%); border-radius:50%; background:#fff;
  box-shadow:0 4px 16px rgba(14,46,54,.3);
}
.cmp-handle::before{
  content:"‹ ›"; position:absolute; top:50%; left:50%; transform:translate(-50%,-52%);
  z-index:4; font-size:15px; color:var(--brand-700); font-weight:700; letter-spacing:1px;
}
.cmp-lbl{
  position:absolute; bottom:12px; z-index:5; font-size:11px; font-weight:600; letter-spacing:.1em;
  padding:4px 11px; border-radius:var(--r-pill); background:rgba(255,255,255,.9); color:var(--ink);
  backdrop-filter:blur(6px);
}
.cmp-lbl.l{ left:12px; } .cmp-lbl.r{ right:12px; }
.case-meta{ padding:16px 2px 0; }
.case-meta h4{ font-size:15px; }
.case-meta p{ font-size:12.5px; color:var(--ink-3); margin-top:5px; }

/* ---------- 13. 荣誉 / 图库 ---------- */
.gal{ display:grid; grid-template-columns:repeat(6,1fr); gap:14px; }
.gal a{
  position:relative; border-radius:var(--r-md); overflow:hidden; background:#fff;
  border:1px solid var(--line); aspect-ratio:4/3;
  transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}
.gal a:hover{ transform:translateY(-4px) scale(1.015); box-shadow:var(--sh-md); z-index:2; }
.gal img{ width:100%; height:100%; object-fit:cover; }
.gal-wide{ grid-template-columns:repeat(4,1fr); }
.gal-wide a{ aspect-ratio:4/3; }

.honor-roll{ display:flex; flex-wrap:wrap; gap:9px; }
.honor-roll span{
  font-size:13px; padding:8px 15px; border-radius:var(--r-pill);
  background:#fff; border:1px solid var(--line); color:var(--ink-2);
  transition:.25s var(--ease);
}
.honor-roll span:hover{ border-color:var(--brand-lt); color:var(--brand-700); background:var(--brand-50); }

/* ---------- 14. 流程 / 承诺 ---------- */
.steps{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; counter-reset:s; }
.step{
  position:relative; background:#fff; border:1px solid var(--line); border-radius:var(--r-lg);
  padding:28px 26px 30px; transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}
.step:hover{ transform:translateY(-4px); box-shadow:var(--sh-md); }
.step-n{
  font-family:var(--serif); font-size:34px; font-weight:700; line-height:1;
  color:var(--brand-100); letter-spacing:-.02em;
}
.step h4{ margin-top:14px; font-size:16.5px; }
.step p{ margin-top:10px; font-size:13.5px; color:var(--ink-3); line-height:1.75; }

.promise{ display:grid; grid-template-columns:repeat(4,1fr); gap:18px; }
.promise li{
  background:rgba(255,255,255,.05); border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-lg); padding:26px 24px;
  transition:background-color .3s,border-color .3s,transform .4s var(--ease);
}
.promise li:hover{ background:rgba(255,255,255,.09); border-color:rgba(255,255,255,.24); transform:translateY(-3px); }
.promise .ico{ width:24px; height:24px; color:var(--brand-lt); }
.promise b{ display:block; margin-top:16px; font-size:15.5px; color:#fff; }
.promise p{ margin-top:9px; font-size:13px; color:#8FB0B7; line-height:1.7; }

/* ---------- 15. FAQ ---------- */
.faq{ max-width:860px; margin-inline:auto; }
.faq-item{ border-bottom:1px solid var(--line); }
.faq-q{
  width:100%; display:flex; align-items:flex-start; gap:18px; text-align:left;
  padding:24px 4px; font-size:16.5px; font-weight:600; color:var(--ink);
  transition:color .22s;
}
.faq-q:hover{ color:var(--brand-700); }
.faq-q .qmark{ font-family:var(--serif); font-size:15px; color:var(--brand-lt); flex:none; margin-top:3px; }
.faq-q .plus{
  margin-left:auto; flex:none; width:26px; height:26px; border-radius:50%;
  border:1.5px solid var(--line); position:relative; transition:.3s var(--ease); margin-top:2px;
}
.faq-q .plus::before,.faq-q .plus::after{
  content:""; position:absolute; top:50%; left:50%; background:var(--ink-3); border-radius:2px;
  transition:.3s var(--ease); transform:translate(-50%,-50%);
}
.faq-q .plus::before{ width:11px; height:1.6px; }
.faq-q .plus::after{ width:1.6px; height:11px; }
.faq-item.open .faq-q{ color:var(--brand-700); }
.faq-item.open .plus{ background:var(--brand); border-color:var(--brand); transform:rotate(90deg); }
.faq-item.open .plus::before{ background:#fff; }
.faq-item.open .plus::after{ opacity:0; }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .45s var(--ease); }
.faq-a-in{ padding:0 46px 26px 41px; font-size:14.5px; color:var(--ink-3); line-height:1.9; }

/* ---------- 16. 联系 / 地图 ---------- */
.contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:52px; align-items:start; }
.info-list{ display:flex; flex-direction:column; }
.info-list li{ display:flex; gap:16px; padding:20px 0; border-bottom:1px solid var(--line); }
.info-list .ico{ width:19px; height:19px; color:var(--brand); flex:none; margin-top:4px; }
.info-list b{ display:block; font-size:12px; letter-spacing:.1em; color:var(--ink-4); text-transform:uppercase; font-weight:600; }
.info-list span{ display:block; margin-top:6px; font-size:15px; color:var(--ink); line-height:1.7; }
.info-list a:hover{ color:var(--brand-700); }

.map-card{
  border-radius:var(--r-xl); overflow:hidden; box-shadow:var(--sh-lg); background:#fff;
  border:1px solid var(--line);
}
.map-card img{ width:100%; height:auto; }
.map-foot{ padding:20px 24px; display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap; }

/* 表单 */
.form{ background:#fff; border:1px solid var(--line); border-radius:var(--r-xl); padding:34px; box-shadow:var(--sh-md); }
.field{ margin-bottom:16px; }
.field label{ display:block; font-size:13px; font-weight:600; color:var(--ink); margin-bottom:8px; }
.field label i{ font-style:normal; color:var(--blush); }
.field input,.field select,.field textarea{
  width:100%; padding:13px 15px; border:1px solid var(--line); border-radius:var(--r-sm);
  background:#FCFDFD; font-size:14.5px; transition:.22s var(--ease); outline:none;
}
.field textarea{ min-height:104px; resize:vertical; }
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand-lt); background:#fff; box-shadow:0 0 0 4px rgba(126,194,206,.16);
}
.form-row{ display:grid; grid-template-columns:1fr 1fr; gap:14px; }
.form-note{ margin-top:14px; font-size:12.5px; color:var(--ink-4); line-height:1.7; }
.form-done{ display:none; padding:22px; border-radius:var(--r-md); background:var(--brand-50); color:var(--brand-700); font-size:14.5px; }
.form.done form{ display:none; }
.form.done .form-done{ display:block; }

/* ---------- 17. 页脚 ---------- */
.foot{ background:var(--brand-900); color:#8FB0B7; padding:72px 0 0; }
.foot-grid{ display:grid; grid-template-columns:1.6fr 1fr 1fr 1.2fr; gap:44px; }
.foot h4{ color:#fff; font-size:14px; letter-spacing:.06em; margin-bottom:20px; }
.foot a{ font-size:13.5px; color:#8FB0B7; transition:color .2s; display:block; padding:6px 0; }
.foot a:hover{ color:#fff; }
.foot .brand img{ height:32px; filter:brightness(0) invert(1); opacity:.92; }
.foot-brand p{ margin-top:20px; font-size:13.5px; line-height:1.9; max-width:330px; }
.foot-lic{ margin-top:22px; font-size:12px; color:#5F858D; line-height:1.9; }
.foot-bot{
  margin-top:60px; border-top:1px solid rgba(255,255,255,.1); padding:24px 0;
  display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap;
  font-size:12.5px; color:#5F858D;
}

/* ---------- 18. 页面头（内页） ---------- */
.phead{ padding-top:130px; padding-bottom:56px; position:relative; overflow:hidden; }
.phead::before{
  content:""; position:absolute; width:640px; height:640px; right:-180px; top:-340px; border-radius:50%;
  background:radial-gradient(circle,rgba(126,194,206,.26),transparent 68%);
}
.phead .wrap{ position:relative; z-index:1; }
.crumb{ font-size:12.5px; color:var(--ink-4); display:flex; align-items:center; gap:8px; }
.crumb a:hover{ color:var(--brand-700); }
.phead h1{ margin-top:16px; }
.phead .lead{ margin-top:18px; max-width:660px; }

/* ---------- 19. 筛选 / Tab ---------- */
.filters{ display:flex; flex-wrap:wrap; gap:9px; }
.filters button{
  padding:10px 20px; border-radius:var(--r-pill); font-size:14px; font-weight:500;
  background:#fff; border:1px solid var(--line); color:var(--ink-2);
  transition:.25s var(--ease);
}
.filters button:hover{ border-color:var(--brand-lt); color:var(--brand-700); }
.filters button.on{ background:var(--brand-900); border-color:var(--brand-900); color:#fff; }

/* 项目列表 */
.svc-list{ display:grid; grid-template-columns:repeat(2,1fr); gap:20px; }
.svc{
  background:#fff; border:1px solid var(--line); border-radius:var(--r-lg); overflow:hidden;
  transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .3s;
  display:flex; flex-direction:column;
}
.svc:hover{ transform:translateY(-4px); box-shadow:var(--sh-lg); border-color:transparent; }
.svc-top{ display:flex; gap:18px; padding:22px 24px 0; }
.svc-thumb{
  width:96px; height:96px; flex:none; border-radius:var(--r-md); overflow:hidden; background:var(--brand-50);
}
.svc-thumb img{ width:100%; height:100%; object-fit:cover; }
.svc-hd{ flex:1; min-width:0; }
.svc-hd .cat-name{ font-size:11.5px; letter-spacing:.1em; color:var(--brand); font-weight:600; }
.svc-hd h3{ font-size:17.5px; margin-top:6px; }
.svc-hd .price{
  margin-top:9px; font-size:14px; color:var(--brand-700); font-weight:600;
  font-family:var(--serif); letter-spacing:.01em;
}
.svc-body{ padding:18px 24px 24px; }
.svc-body>p{ font-size:14px; color:var(--ink-3); line-height:1.8; }
.svc-more{ margin-top:18px; }
.svc-more summary{
  list-style:none; cursor:pointer; display:inline-flex; align-items:center; gap:7px;
  font-size:13.5px; font-weight:600; color:var(--brand-600);
}
.svc-more summary::-webkit-details-marker{ display:none; }
.svc-more summary .ico{ width:15px; height:15px; transition:transform .3s var(--ease); }
.svc-more[open] summary .ico{ transform:rotate(180deg); }
.svc-detail{ margin-top:18px; padding-top:18px; border-top:1px dashed var(--line); }
.dt{ display:flex; gap:12px; margin-bottom:14px; }
.dt:last-child{ margin-bottom:0; }
.dt .ico{ width:16px; height:16px; color:var(--brand); flex:none; margin-top:4px; }
.dt b{ display:block; font-size:12.5px; color:var(--ink); margin-bottom:5px; letter-spacing:.02em; }
.dt p{ font-size:13.5px; color:var(--ink-3); line-height:1.8; }

/* ---------- 20. 灯箱 ---------- */
.lb{
  position:fixed; inset:0; z-index:200; background:rgba(8,26,31,.9);
  backdrop-filter:blur(10px); display:flex; align-items:center; justify-content:center;
  padding:5vh 5vw; opacity:0; pointer-events:none; transition:opacity .3s var(--ease);
}
.lb.on{ opacity:1; pointer-events:auto; }
.lb img{ max-width:100%; max-height:90vh; border-radius:var(--r-md); box-shadow:var(--sh-xl); }
.lb-x{
  position:absolute; top:24px; right:26px; width:44px; height:44px; border-radius:50%;
  background:rgba(255,255,255,.14); color:#fff; display:flex; align-items:center; justify-content:center;
}
.lb-x:hover{ background:rgba(255,255,255,.26); }

/* ---------- 20b. 列数工具类 ----------
   放在所有组件之后，保证能覆盖 .gal / .dev-rail 的默认列数；
   移动端覆盖见第 23 节（媒体查询位于其后，优先级更高）。
   页面上不要写内联 grid-template-columns，否则会盖掉移动端样式。 */
.cols-3{ grid-template-columns:repeat(3,1fr); }
.cols-5{ grid-template-columns:repeat(5,1fr); }

/* ---------- 21. 动效 ---------- */
.rv{ opacity:0; transform:translateY(24px); transition:opacity .7s var(--ease-out),transform .7s var(--ease-out); }
.rv.in{ opacity:1; transform:none; }
.rv-d1{ transition-delay:.07s } .rv-d2{ transition-delay:.14s } .rv-d3{ transition-delay:.21s }
.rv-d4{ transition-delay:.28s } .rv-d5{ transition-delay:.35s }
@media (prefers-reduced-motion:reduce){
  *{ animation:none!important; transition-duration:.01ms!important; }
  .rv{ opacity:1!important; transform:none!important; }
  html{ scroll-behavior:auto; }
}

/* ---------- 22. 移动端底部操作条 ---------- */
.mbar{
  position:fixed; left:0; right:0; bottom:0; z-index:88;
  display:none; gap:10px; padding:10px 14px calc(10px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.94); backdrop-filter:blur(16px);
  border-top:1px solid var(--line);
}
.mbar .btn{ flex:1; }

/* ---------- 23. 响应式 ---------- */
@media (max-width:1080px){
  :root{ --sect:76px; }
  .nav-links{ display:none; }
  .burger{ display:flex; }
  .nav-cta .nav-tel{ display:none; }
  .hero-grid{ grid-template-columns:1fr; gap:52px; }
  .hero-shot{ aspect-ratio:4/3.4; }
  .hero-chip-1{ left:8px; top:16px; }
  .hero-chip-2{ right:8px; bottom:82px; }
  .cat-grid,.doc-grid,.dev-rail{ grid-template-columns:repeat(2,1fr); }
  .case-grid{ grid-template-columns:1fr; }
  .case-grid .cmp-hero{ grid-column:auto; }
  .cmp-hero{ aspect-ratio:2/1; }
  .stats{ grid-template-columns:repeat(2,1fr); }
  .promise{ grid-template-columns:repeat(2,1fr); }
  .steps{ grid-template-columns:1fr 1fr; }
  .contact-grid{ grid-template-columns:1fr; gap:40px; }
  .gal{ grid-template-columns:repeat(4,1fr); }
  .cols-3{ grid-template-columns:repeat(2,1fr); }
  .cols-5{ grid-template-columns:repeat(4,1fr); }
  .foot-grid{ grid-template-columns:1fr 1fr; gap:36px; }
  .svc-list{ grid-template-columns:1fr; }
}
@media (max-width:720px){
  :root{ --sect:60px; --gutter:20px; }
  body{ font-size:15.5px; }
  .nav-in{ height:66px; }
  .drawer{ inset:66px 0 0 0; }
  .brand img{ height:26px; }
  .hero{ padding-top:104px; padding-bottom:56px; }
  .hero-grid{ gap:40px; }
  .hero-shot{ aspect-ratio:4/3.1; border-radius:var(--r-xl); }
  .hero-actions .btn{ flex:1 1 100%; }
  .hero-trust{ gap:10px 16px; }
  .cat-grid,.doc-grid,.dev-rail,.stats,
  .promise,.steps,.g2,.g3,.g4{ grid-template-columns:1fr; }
  .gal,.gal-wide{ grid-template-columns:repeat(2,1fr); }
  .gal a{ aspect-ratio:1/1; }
  .cols-3{ grid-template-columns:1fr; }
  .cols-5{ grid-template-columns:repeat(2,1fr); }
  .foot-grid{ grid-template-columns:1fr; gap:30px; }
  .form{ padding:24px; }
  .form-row{ grid-template-columns:1fr; }
  .sec-head{ margin-bottom:36px; }
  .mbar{ display:flex; }
  body{ padding-bottom:74px; }
  .foot{ padding-bottom:20px; }
  .svc-top{ flex-direction:column; gap:14px; }
  .svc-thumb{ width:100%; height:150px; }
  .faq-q{ font-size:15.5px; gap:12px; }
  .faq-a-in{ padding:0 0 24px 30px; }
  .feature{ min-height:340px; padding:24px; }
  .cmp,.cmp-hero{ aspect-ratio:1.6/1; }
  .cmp-lbl{ font-size:10px; padding:3px 9px; }
}
@media (max-width:420px){
  .h-xxl{ font-size:30px; }
  .stat{ padding:26px 20px; }
}