/* =========================================================
   工作室官网 · 单页应用版（主页 / 经历 / 相册 无刷新切换）
   视觉对照 xn--7nrs45e.cn 一比一还原
   ========================================================= */
:root{
  --bg:#f0f0f6;
  --ink:#44566c;
  --ink-strong:#2b3648;
  --muted:#8697a8;
  --blue:#0045ff;
  --blue-2:#0081ff;
  --soft:#f8fafb;
  --card:#ffffff;
  --radius:15px;
  --shadow:0 24px 40px rgba(134,151,168,.25);
  --shadow-sm:0 4px 8px rgba(134,151,168,.1);
  --content-w:1240px;
  --pad-x:30px;
  --font-sans:"Archivo","Helvetica Neue",Arial,"Songti SC",SimSun,serif;
  --font-serif:"Merriweather",Georgia,"Songti SC",SimSun,serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  min-height:100vh;
  background-color:var(--bg);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--blue);text-decoration:none;transition:color .3s cubic-bezier(.72,.16,.345,.875)}
a:hover{text-decoration:none}
body.menu-lock{overflow:hidden}
ul{list-style:none;margin:0;padding:0}
h1,h2,h3,h4,h5,p,figure{margin:0}
h1,h2,h3,h4,h5{font-family:var(--font-serif);font-weight:700;line-height:1.3}
img{max-width:100%;display:block}
button{font-family:inherit}

/* 背景三角 */
.bg-triangles{
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='460' height='460' viewBox='0 0 460 460'%3E%3Cpolygon points='0,0 330,0 0,330' fill='%23ebe9f2'/%3E%3Cpolygon points='0,0 190,0 0,190' fill='%23e5e3ee'/%3E%3C/svg%3E"),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='420' height='420' viewBox='0 0 420 420'%3E%3Cpolygon points='420,420 420,120 120,420' fill='%23ebe9f2'/%3E%3C/svg%3E");
  background-position:left top,right bottom;
  background-repeat:no-repeat;
}

/* ---------------- 布局 ---------------- */
.main{position:relative;z-index:1}
.container{max-width:var(--content-w);margin:0 auto;padding:0 15px}
@media (min-width:1300px){.container{max-width:var(--content-w)}}
.gutter-top{padding-top:10rem;padding-bottom:40px}
.row{display:grid;grid-template-columns:25% 75%;gap:0;margin:0 -15px;align-items:start}
.col-sidebar{min-width:0;padding:0 15px;align-self:stretch}
.col-content{min-width:0;padding:0 15px}

/* 卡片 */
.box{
  background:var(--card);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:30px;
  position:relative;
}
.box::before{
  content:"";position:absolute;left:0;right:0;bottom:0;margin:0 auto;
  width:86%;height:16px;box-shadow:0 24px 40px rgba(134,151,168,.15);
  z-index:-1;border-radius:var(--radius);
}

/* ---------------- 侧栏 ---------------- */
.sticky-column{position:sticky;top:30px;transition:box-shadow .35s ease-in-out}
.sidebar{padding:30px 30px 0;text-align:center;overflow:visible}
.sidebar__avatar{
  display:block;width:80px;height:100px;object-fit:contain;
  margin:-128px auto 24px;
  filter:drop-shadow(0 2px 8px rgba(134,151,168,.15)) drop-shadow(0 8px 32px rgba(134,151,168,.15));
  transition:margin-top .3s ease-in-out,filter .3s ease-in-out;
}
/* 吸附后：logo 滑入卡片，卡片轻微加深阴影（对照目标站 .is_stuck） */
@media (min-width:993px){
  .sticky-column.is-stuck{box-shadow:0 10px 30px rgba(134,151,168,.2)}
  .sticky-column.is-stuck .sidebar__avatar{margin-top:0}
}
.sidebar__user-name{
  font-family:var(--font-serif);
  font-size:1.5rem;font-weight:400;line-height:1.3;
  margin-bottom:.9rem;color:#44566c;
}
.sidebar__user-name .weight--500{font-weight:500}

.badge{
  display:inline-block;
  font-size:.875rem;font-weight:400;line-height:1.5;
  border-radius:10rem;
  padding:.5rem 1rem;
  background:#f0f0f6;color:#44566c;
  border:0;
}
/* 标语：一行展示（字号收到 12px，左右各外扩 12px）；窄侧栏放不下时按「·」整词换行，并让两行长度接近 */
.sidebar .badge{
  max-width:calc(100% + 24px);
  margin:0 -12px;
  padding:.42rem .8rem;
  font-size:.75rem;line-height:1.65;letter-spacing:.01em;
  word-break:keep-all;
  text-wrap:balance;
}
.badge b{font-weight:500}
.social{margin-top:1.5rem;margin-bottom:1.4rem;line-height:1.4}
.social .badge{padding:.5rem 1rem}

.sidebar__info{
  margin:0 -30px;
  padding:1.6rem 30px 1.9rem;
  background:var(--soft);
  border-radius:0 0 var(--radius) var(--radius);
  text-align:left;
}
.contacts-block{font-size:.937rem;margin-bottom:1.3rem}
.contacts-block__item{
  display:flex;align-items:center;
  margin-bottom:.5rem;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  color:#44566c;
}
.contacts-block__item:last-child{margin-bottom:0}
.contacts-block__item svg{
  width:18px;height:18px;flex:0 0 18px;
  margin-right:.875rem;color:#44566c;
}
.contacts-block__item a{color:#44566c;overflow:hidden;text-overflow:ellipsis}
.contacts-block__item a:hover{color:var(--blue)}
/* 长文本（如在线时间）允许换行，图标顶对齐 */
.contacts-block__item--wrap{white-space:normal;align-items:flex-start;line-height:1.5;word-break:keep-all;overflow-wrap:anywhere}
.contacts-block__item--wrap svg{margin-top:.18rem}
/* 主文本 + 备注（如「节假日照常在线」）：备注单独一行、字号小一点 */
.c-body{display:flex;flex-direction:column;gap:.12rem;min-width:0}
.c-main{text-wrap:balance}
.c-note{font-size:.8125rem;color:#8b98a8;line-height:1.45}

.btn{
  display:block;width:100%;text-align:center;
  padding:.7rem 2rem;border-radius:10rem;border:0;
  background-image:linear-gradient(to right,#0081ff 0%,#3fa0ff 50%,#0045ff 100%);
  background-size:200% auto;
  color:#fff;font-size:.937rem;font-weight:400;line-height:1.45;
  box-shadow:0 24px 40px rgba(0,69,255,.2),0 8px 16px rgba(0,69,255,.15);
  transition:.4s ease-in-out;
}
.btn+.btn{margin-top:.5rem}
.btn:hover{background-position:right center;color:#fff}

/* ---------------- 内容区 ---------------- */
.content-box{padding:30px 30px 46px;min-height:640px}
.title{color:var(--ink-strong)}
.title--h1{font-size:2rem;margin-bottom:1.1rem}
.title--h3{font-size:1.5rem;margin-bottom:1.4rem}
.title--h5{font-size:1rem;line-height:1.4}
.title__separate{margin-bottom:2.3rem;position:relative}
.title__separate::before{
  content:"";position:absolute;left:0;bottom:-1.1rem;
  width:3.12rem;height:4px;border-radius:.5rem;background:var(--blue);
}
.about-text p{font-size:1rem;line-height:1.75;color:#44566c;margin-bottom:1rem;white-space:pre-line}
.about-text p:last-child{margin-bottom:0}

/* 视图切换（无刷新） */
.views{position:relative}
.view{display:none}
.view.is-active{display:block}
.view.view--in{animation:viewIn .48s cubic-bezier(.22,1,.36,1)}
@keyframes viewIn{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}

/* 页面切换：整页淡淡退场 → 换页 → 整体上浮淡入（放慢节奏，能看清"页面动了一下"） */
.main{will-change:opacity,transform}
.main.page-out{opacity:0;transform:translateY(-14px);transition:opacity .17s ease-in,transform .17s ease-in}
.main.page-in{animation:pageIn .56s cubic-bezier(.22,1,.36,1) both}
@keyframes pageIn{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}

@media (prefers-reduced-motion:reduce){
  .view.view--in{animation:none}
  .main.page-in{animation:none}
  .main.page-out{transition:none;opacity:1;transform:none}
}

/* =========================================================
   右上角圆形菜单：默认收起，点击由右向左展开
   ========================================================= */
.circle-menu{
  position:absolute;top:0;right:0;
  width:3.75rem;height:3.75rem;
  border-radius:50% .937rem 50% 50%;
  background-image:linear-gradient(to right,#0081ff 0%,#0045ff 100%);
  box-shadow:0 24px 40px rgba(0,69,255,.2),0 8px 16px rgba(0,69,255,.15);
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;z-index:20;
  transition:transform .28s ease,border-radius .28s ease,box-shadow .28s ease;
  -webkit-tap-highlight-color:transparent;outline:none;user-select:none;
}
.circle-menu:hover{transform:scale(1.03)}
.circle-menu:active{transform:scale(.96)}
.circle-menu:focus-visible{box-shadow:0 0 0 3px rgba(0,69,255,.25)}
.circle-menu.active{border-radius:50%}
.hamburger{width:24px;display:flex;flex-direction:column;pointer-events:none}
.hamburger .line{
  display:block;height:3px;width:24px;margin:2.5px 0;
  background:#fff;border-radius:4px;
  transition:transform .25s ease-in-out,opacity .2s ease;
}
.hamburger .line:nth-child(2){width:20px;margin-left:4px}
.circle-menu.active .hamburger .line:nth-child(1){transform:translateY(8px) rotate(45deg)}
.circle-menu.active .hamburger .line:nth-child(2){opacity:0;transform:rotate(45deg)}
.circle-menu.active .hamburger .line:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

.inner-menu{
  position:absolute;top:0;right:0;height:3.75rem;
  display:flex;align-items:center;justify-content:flex-end;
  z-index:19;pointer-events:none;
}
.inner-menu .nav{
  --nav-w:240px;
  height:100%;
  display:flex;align-items:center;justify-content:flex-end;
  color:#fff;
  background-image:linear-gradient(to right,#0081ff 0%,#0045ff 100%);
  border-radius:2rem 0 0 2rem;
  box-shadow:0 24px 40px rgba(0,69,255,.2),0 8px 16px rgba(0,69,255,.15);
  white-space:nowrap;
  width:0;overflow:hidden;opacity:0;pointer-events:none;
  transition:width .42s cubic-bezier(.22,1.2,.36,1),opacity .16s ease;
  will-change:width;
}
body.menu-open .inner-menu .nav{
  width:var(--nav-w);opacity:1;pointer-events:auto;
  transition:width .5s cubic-bezier(.22,1.2,.36,1),opacity .1s linear;
}
.inner-menu .nav li{
  margin-right:3rem;flex:0 0 auto;
  opacity:0;transform:translateX(18px);
  transition:opacity .2s ease,transform .26s ease;
}
.inner-menu .nav li:first-child{margin-left:3rem}
.inner-menu .nav li:last-child{margin-right:88px}
body.menu-open .inner-menu .nav li{opacity:1;transform:none}
body.menu-open .inner-menu .nav li:nth-child(1){transition-delay:.15s}
body.menu-open .inner-menu .nav li:nth-child(2){transition-delay:.21s}
body.menu-open .inner-menu .nav li:nth-child(3){transition-delay:.27s}
body.menu-open .inner-menu .nav li:nth-child(4){transition-delay:.33s}
.inner-menu .nav a{
  display:inline-block;position:relative;
  font-size:.937rem;color:rgba(255,255,255,.7);padding:6px 0;
  transition:color .2s ease;
}
.inner-menu .nav a::after{
  content:"";position:absolute;left:50%;bottom:-1px;
  width:5px;height:5px;margin-left:-2.5px;border-radius:50%;
  background:#fff;opacity:0;transform:translateY(3px);
  transition:opacity .22s ease,transform .22s ease;
}
.inner-menu .nav a:hover{color:#fff}
.inner-menu .nav a.active{color:#fff}
.inner-menu .nav a.active::after{opacity:1;transform:none}

/* ---------------- 服务 ---------------- */
.box-inner{
  background:var(--soft);
  margin:0 calc(-1 * var(--pad-x));
  padding:2rem var(--pad-x) 2.2rem;
}
.box-inner--white{background:#fff;margin-bottom:0}
.box-inner--white+.box-inner--white{padding-top:0}
.case-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.875rem}
.case-item{
  display:grid;grid-template-columns:2.5rem minmax(0,1fr);
  column-gap:1.2rem;row-gap:.4rem;align-items:start;
  background:#fff;border-radius:var(--radius);
  padding:1.875rem 1.875rem 1.5rem;
  box-shadow:var(--shadow-sm);
  min-width:0;
}
.case-item__icon{grid-row:1 / span 2;width:2.5rem;height:2.5rem;margin:0}
.case-item__title{
  grid-column:2;align-self:center;
  font-size:1rem;line-height:1.45;font-weight:700;color:#2b3648;
}
.case-item__caption{
  grid-column:2;
  font-size:.875rem;line-height:1.6;color:var(--muted);
  white-space:pre-line;word-break:break-word;
}

/* ---------------- 经历 ---------------- */
.timeline{position:relative;margin-top:1.5rem;padding-left:1.75rem}
.timeline::before{
  content:"";position:absolute;left:.3rem;top:.45rem;bottom:.45rem;width:2px;
  background:linear-gradient(180deg,rgba(0,69,255,.3),rgba(0,69,255,.05));
  border-radius:2px;
}
.timeline-item{position:relative;padding-bottom:1.7rem}
.timeline-item:last-child{padding-bottom:.2rem}
.timeline-item__dot{
  position:absolute;left:-1.75rem;top:.3rem;
  width:.8rem;height:.8rem;border-radius:50%;
  background:#fff;border:3px solid var(--blue);
  box-shadow:0 0 0 4px rgba(0,69,255,.08);
}
.timeline-item__meta{display:flex;align-items:center;gap:.65rem;flex-wrap:wrap;margin-bottom:.35rem}
.timeline-item__period{
  font-size:.75rem;font-weight:700;color:#fff;background:var(--blue);
  padding:.2rem .65rem;border-radius:99px;letter-spacing:.03em;line-height:1.4;
}
.timeline-item__org{font-size:.82rem;color:var(--muted)}
.timeline-item__title{
  font-family:var(--font-serif);
  font-size:1.05rem;line-height:1.45;color:#2b3648;margin:0 0 .35rem;
}
.timeline-item__desc{
  font-size:.875rem;line-height:1.75;color:var(--muted);
  white-space:pre-line;word-break:break-word;margin:0;max-width:46em;
}
.timeline-empty{font-size:.875rem;color:var(--muted);padding:.6rem 0 .2rem}

/* ---------------- 业务 ---------------- */
.business-intro{
  font-size:.937rem;line-height:1.8;color:#5b6b82;
  margin:.2rem 0 1.8rem;max-width:46em;
}
.product-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:1.5rem;margin-top:1.4rem;
}
.product-card{
  display:flex;flex-direction:column;min-width:0;
  background:#fff;border-radius:var(--radius);
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:transform .3s cubic-bezier(.22,1,.36,1),box-shadow .3s ease;
}
.product-card:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(134,151,168,.22)}
.product-card__cover{
  position:relative;padding-bottom:46%;
  background:linear-gradient(135deg,#e8f0ff 0%,#f4f7fc 60%,#eef2f8 100%);
}
.product-card__cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.product-card__initial{
  position:absolute;inset:0;display:grid;place-items:center;
  font-family:var(--font-serif);font-size:2.6rem;font-weight:700;color:#4d7bd8;
}
.product-card__body{display:flex;flex-direction:column;flex:1;padding:1.15rem 1.35rem 1.3rem}
.product-card__head{display:flex;align-items:center;gap:.55rem;margin-bottom:.5rem;min-width:0}
.product-card__tag{
  flex:none;font-size:.72rem;line-height:1;padding:.32rem .6rem;border-radius:99px;
  background:rgba(0,69,255,.08);color:var(--blue);font-weight:600;white-space:nowrap;
}
.product-card__name{
  font-family:var(--font-serif);font-size:1.05rem;line-height:1.4;
  color:var(--ink-strong);min-width:0;
}
.product-card__desc{font-size:.875rem;line-height:1.7;color:var(--muted);white-space:pre-line}
.product-card__link{
  display:inline-flex;align-items:center;gap:.3rem;margin-top:auto;padding-top:.9rem;
  font-size:.875rem;font-weight:600;color:var(--blue);
}
.product-card__link svg{width:1rem;height:1rem;transition:transform .3s ease}
.product-card__link:hover{color:#0035c4}
.product-card__link:hover svg{transform:translateX(3px)}
.skill-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.5rem;margin-top:2.2rem}
.skill-box{background:#fff;border-radius:12px;padding:1.4rem 1.4rem 1.5rem;box-shadow:var(--shadow-sm)}
.skill-box .title--h3{font-size:1.15rem;margin-bottom:1rem}
.progress{position:relative;height:24px;border-radius:99px;background:#f0f0f6;margin-bottom:1rem;overflow:hidden}
.progress:last-child{margin-bottom:0}
.progress-bar{
  height:100%;border-radius:99px;width:0;
  background-image:linear-gradient(to right,#0081ff 0%,#0045ff 100%);
  box-shadow:0 2px 4px rgba(0,69,255,.15),0 8px 16px rgba(0,69,255,.2);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 12px;color:#fff;font-size:.78rem;white-space:nowrap;
  transition:width 1s cubic-bezier(.22,1,.36,1);
}

/* ---------------- 相册 ---------------- */
.gallery-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.25rem;margin-top:1.8rem}
.gallery-grid__item{min-width:0}
.gallery-grid__image-wrap{
  border-radius:10px;height:176px;overflow:hidden;position:relative;
  background:#eef2f8;cursor:zoom-in;
}
.gallery-grid__image{width:100%;height:100%;object-fit:cover;border-radius:10px;transition:transform .45s ease}
.gallery-grid__item:hover .gallery-grid__image{transform:scale(1.08)}
.gallery-grid__title{font-size:.937rem;font-weight:600;color:var(--ink-strong);margin-top:.75rem}
.gallery-grid__empty{
  display:grid;place-items:center;width:100%;height:100%;
  color:#9aa8bb;font-size:.8rem;
  background:linear-gradient(140deg,#f4f7fc,#e8eef8);
}
/* 相册空状态 */
.gallery-empty{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:.35rem;margin-top:1.8rem;padding:3.2rem 1.2rem;
  border:1px dashed #dde4ef;border-radius:12px;background:#fbfcfe;text-align:center;
}
.gallery-empty__icon{color:#c2cede;margin-bottom:.35rem}
.gallery-empty__icon svg{width:44px;height:44px}
.gallery-empty p{font-size:1rem;font-weight:600;color:#6b7c93}
.gallery-empty span{font-size:.8125rem;color:#9aa8bb}

/* 图片放大 */
.lightbox{
  position:fixed;inset:0;z-index:1200;background:rgba(18,26,42,.86);
  display:flex;align-items:center;justify-content:center;padding:40px;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility 0s linear .25s;
}
.lightbox.show{opacity:1;visibility:visible;transition:opacity .25s ease}
.lightbox img{max-width:92vw;max-height:86vh;border-radius:10px;box-shadow:0 30px 80px rgba(0,0,0,.45)}
.lightbox__close{
  position:absolute;top:22px;right:24px;width:40px;height:40px;border-radius:50%;
  border:0;background:rgba(255,255,255,.14);color:#fff;font-size:18px;cursor:pointer;
}
.lightbox__close:hover{background:rgba(255,255,255,.24)}

/* ---------------- 页脚 / 回到顶部 ---------------- */
.footer{margin-top:1.4rem;text-align:center;font-size:.8125rem;color:#9aa8b8}
.footer a{color:#9aa8b8}
.footer a:hover{color:var(--blue)}

.back-to-top{
  position:fixed;right:26px;bottom:26px;width:42px;height:42px;border-radius:50%;
  background:#fff;box-shadow:0 10px 28px rgba(31,43,68,.16);
  display:grid;place-items:center;color:#5b6b82;cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(8px);transition:.25s;z-index:50;
}
.back-to-top.show{opacity:1;visibility:visible;transform:none}
.back-to-top svg{width:18px;height:18px}

/* ---------------- 预加载 ---------------- */
.preloader{
  position:fixed;inset:0;z-index:9999;background:var(--bg);
  display:grid;place-items:center;transition:opacity .35s,visibility .35s;
}
.preloader.done{opacity:0;visibility:hidden;pointer-events:none}
/* 圆点脉冲（对照目标站：实心蓝点放大淡出，两个错相位） */
.circle-pulse{position:relative;width:96px;height:96px;margin:0 auto 18px}
.circle-pulse__1,.circle-pulse__2{
  position:absolute;top:50%;left:50%;border-radius:50%;
  transform:scale(0);animation:pulse 1.6s linear infinite;
}
.circle-pulse__1{width:6rem;height:6rem;margin:-3rem 0 0 -3rem;background:var(--blue)}
.circle-pulse__2{width:4.8rem;height:4.8rem;margin:-2.4rem 0 0 -2.4rem;background:rgba(0,69,255,.7);animation-delay:-.8s}
@keyframes pulse{0%{transform:scale(0);opacity:1}100%{transform:scale(1);opacity:0}}
.preloader__progress{width:132px;height:3px;border-radius:99px;background:rgba(0,69,255,.14);overflow:hidden;margin:0 auto}
.preloader__progress span{display:block;height:100%;width:40%;border-radius:99px;background:var(--blue);animation:load 1.1s ease-in-out infinite}
@keyframes load{0%{transform:translateX(-100%)}100%{transform:translateX(260%)}}

/* ---------------- 响应式 ---------------- */
@media (max-width:1200px){
  .container{max-width:100%}
  .sidebar{margin-bottom:1.875rem}
}
@media (max-width:992px){
  .row{grid-template-columns:1fr;gap:20px}
  .sticky-column{position:static}
  .gutter-top{padding-top:8.5rem}
  .content-box{padding:26px 26px 40px;--pad-x:26px;min-height:0}
  .box-inner{margin-left:-26px;margin-right:-26px;padding-left:26px;padding-right:26px}
  .circle-menu{width:3.55rem;height:3.55rem}
  .inner-menu{height:3.55rem}
  .inner-menu .nav li{margin-right:2rem}
  .inner-menu .nav li:first-child{margin-left:2rem}
  .inner-menu .nav li:last-child{margin-right:76px}
  .gallery-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .sidebar{margin-bottom:1.25rem}
}
@media (max-width:768px){
  .gallery-grid__image-wrap{height:200px}
}
@media (max-width:580px){
  body{font-size:15px}
  .container{padding:0 15px}
  .gutter-top{padding-top:7rem;padding-bottom:26px}
  .box{padding:1rem;border-radius:12px}
  .sidebar{padding:1rem 1rem 0;margin-bottom:.9375rem}
  .sidebar__avatar{width:76px;margin:-96px auto 18px}
  .sidebar__user-name{font-size:1.25rem;margin-bottom:.7rem}
  .badge{font-size:.8125rem;padding:.42rem .9rem}
  .social{margin:1.1rem 0 .9rem}
  .sidebar__info{margin:0 -1rem;padding:1.2rem 1rem 1.4rem}
  .contacts-block{font-size:.9375rem;margin-bottom:.9rem}
  .btn{padding:.62rem 1.4rem;font-size:.875rem}
  .content-box{--pad-x:1rem;padding:1rem 1rem 1.6rem;min-height:0}
  /* 手机端板块：不再向左右溢出，改为白卡内缩的圆角分区，保证明显边距 */
  .box-inner{
    margin:1.6rem 0 0;
    padding:1.1rem 1.05rem 1.3rem;
    border-radius:12px;
  }
  .box-inner--white{
    margin-top:1.3rem;padding:1.3rem 0 .2rem;
    border-top:1px solid #edf0f5;border-radius:0;
  }
  .box-inner--white+.box-inner--white{padding-top:0;border-top:0}
  .title--h1{font-size:1.75rem}
  .title__separate{margin-bottom:1.5rem}
  .title__separate::before{height:2px;bottom:-.6rem;width:3rem}
  .title--h3{font-size:1.25rem;margin-bottom:1rem}
  .case-grid{grid-template-columns:1fr;gap:.75rem}
  /* 手机端业务页：产品单栏、封面更矮、简介收紧 */
  .business-intro{font-size:.875rem;line-height:1.75;margin:.1rem 0 1.3rem}
  .product-grid{grid-template-columns:1fr;gap:1rem;margin-top:1.1rem}
  .product-card__cover{padding-bottom:40%}
  .product-card__initial{font-size:2rem}
  .product-card__body{padding:1rem 1.05rem 1.1rem}
  .product-card__name{font-size:1rem}
  /* 手机端服务卡：图标圆角底 + 标题同行，描述整行通排，避免窄列挤压 */
  .case-item{
    grid-template-columns:2.5rem minmax(0,1fr);
    column-gap:.75rem;row-gap:.55rem;
    padding:1rem 1.05rem 1.1rem;border-radius:12px;
    box-shadow:0 2px 10px rgba(134,151,168,.1);
  }
  .case-item__icon{
    grid-row:1;width:2.5rem;height:2.5rem;padding:.32rem;
    background:rgba(0,69,255,.06);border-radius:.62rem;box-sizing:border-box;
  }
  .case-item__title{font-size:1rem;align-self:center}
  .case-item__caption{grid-column:1 / -1;font-size:.875rem;line-height:1.65;color:#7b8a9d}
  /* 手机端经历时间线：收紧缩进与字号 */
  .timeline{margin-top:1.2rem;padding-left:1.4rem}
  .timeline-item__dot{left:-1.4rem;width:.7rem;height:.7rem;border-width:2.5px}
  .timeline-item{padding-bottom:1.35rem}
  .timeline-item__period{font-size:.72rem;padding:.16rem .55rem}
  .timeline-item__org{font-size:.78rem}
  .timeline-item__title{font-size:.98rem}
  .timeline-item__desc{font-size:.84rem;line-height:1.68}
  .skill-grid{grid-template-columns:1fr}
  .gallery-grid{grid-template-columns:1fr;gap:1.1rem}
  .gallery-grid__image-wrap{height:220px}
  .back-to-top{right:16px;bottom:16px}

  /* 手机端：整屏白色菜单 */
  .circle-menu{
    position:fixed;top:0;right:0;margin:1rem 1rem 0 0;
    width:2.5rem;height:2.5rem;border-radius:50%;z-index:1101;
    box-shadow:0 10px 22px rgba(0,69,255,.25);
  }
  .circle-menu.active{background-image:none;background-color:#fff;box-shadow:0 0 0 1px rgba(0,69,255,.5)}
  .circle-menu.active .hamburger .line{background:var(--blue)}
  .hamburger{width:18px}
  .hamburger .line{height:2px;width:18px;margin:2px 0}
  .hamburger .line:nth-child(2){width:14px;margin-left:0}
  .circle-menu.active .hamburger .line:nth-child(1){transform:translateY(6px) rotate(45deg)}
  .circle-menu.active .hamburger .line:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

  .inner-menu{
    position:fixed;inset:0;width:100%;height:100vh;
    display:block;padding:0;z-index:1100;pointer-events:none;
  }
  .inner-menu .nav{
    position:absolute;inset:0;width:100%;height:100%;
    flex-direction:column;justify-content:center;
    background:#fff;background-image:none;color:#44566c;
    border-radius:0;box-shadow:none;padding:0;
    opacity:0;visibility:hidden;font-size:1.5rem;
    transition:opacity .25s ease,visibility 0s linear .25s;
  }
  body.menu-open .inner-menu .nav{
    width:100%;opacity:1;visibility:visible;pointer-events:auto;
    transition:opacity .25s ease;
  }
  .inner-menu .nav li{margin:0;padding:.2rem 0;text-align:center;opacity:1;transform:none}
  body.menu-open .inner-menu .nav li{transition-delay:0s}
  .inner-menu .nav li:first-child{margin-left:0}
  .inner-menu .nav li:last-child{margin-right:0}
  .inner-menu .nav a{font-size:1.5rem;color:rgba(0,69,255,.6);padding:6px 0}
  .inner-menu .nav a:hover{color:var(--blue)}
  .inner-menu .nav a.active{color:var(--blue)}
  .inner-menu .nav a::after{display:none}
}