/* 全站主样式：黑黄商务风格、响应式布局与移动端适配 */
/* 主题变量：集中管理底色、文字颜色、品牌黄和分隔线 */
:root{--bg:#0d0e0e;--panel:#151616;--panel2:#1b1c1b;--gold:#ffeb00;--gold-soft:#e5d300;--white:#f5f4ef;--muted:#a4a49e;--line:rgba(245,244,239,.13);--max:1240px}
*{box-sizing:border-box}
/* 全局基础：平滑滚动与锚点定位 */
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;background:var(--bg);color:var(--white);font-family:"DM Sans",Arial,sans-serif;line-height:1.65;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit}
.ambient{position:absolute;pointer-events:none;border-radius:50%;filter:blur(90px);opacity:.09;z-index:0}
.ambient-one{width:400px;height:400px;background:#f5d32f;top:130px;right:-200px}
.ambient-two{width:340px;height:340px;background:#d2a91c;top:1500px;left:-220px}
.section-wrap,/* 顶部导航区域 */
.site-header{width:min(var(--max),calc(100% - 80px));margin-inline:auto;position:relative;z-index:1}
.site-header{height:92px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);z-index:5}
.brand{display:flex;align-items:center;gap:13px}
.brand-mark{font-family:Manrope,sans-serif;font-size:25px;font-weight:800;letter-spacing:-2px;color:var(--white)}
.brand-mark span{color:var(--gold)}
.brand-label{font-size:9px;letter-spacing:2px;color:#aaa;max-width:90px;line-height:1.5}
.desktop-nav{display:flex;gap:34px;align-items:center}
.desktop-nav a{font-size:12px;color:#c5c5bf;transition:color .2s}
.desktop-nav a:hover,.back-top:hover{color:var(--gold)}
.header-cta{font-size:11px;letter-spacing:.5px;padding:12px 17px;border:1px solid rgba(245,211,47,.55);color:var(--gold)}
.header-cta span{padding-left:12px}
.menu-toggle{display:none;background:none;border:0;color:var(--white)}
/* 首屏：标题与人物肖像的双栏布局 */
.hero{min-height:720px;display:grid;grid-template-columns:1fr .86fr;align-items:center;gap:6%;padding-top:45px;padding-bottom:72px}
.hero-copy{padding:35px 0 50px}
.eyebrow{display:flex;align-items:center;gap:12px;font-size:9px;letter-spacing:2px;color:#c9c7bd;margin-bottom:50px}
.eyebrow-line{width:32px;height:2px;background:var(--gold)}
.hero-kicker{font-size:10px;letter-spacing:2.2px;color:var(--gold);margin:0 0 13px}
.hero-kicker span{color:#777;margin-left:7px}
h1,h2,h3,p{margin-top:0}
h1,h2,h3{font-family:Manrope,"DM Sans",sans-serif}
h1{font-size:clamp(62px,7.4vw,108px);line-height:.97;letter-spacing:-6px;margin:0 0 25px;font-weight:700}
h1 span{color:var(--gold)}
.hero-title{font-size:clamp(20px,2.1vw,27px);font-weight:500;line-height:1.35;margin-bottom:19px}
.hero-intro{max-width:440px;color:var(--muted);font-size:14px;line-height:1.9;margin-bottom:32px}
.hero-meta{display:flex;align-items:center;gap:15px;border-top:1px solid var(--line);padding-top:22px;max-width:440px}
.meta-symbol{width:42px;height:42px;display:grid;place-items:center;border:1px solid rgba(245,211,47,.45);color:var(--gold);font-size:20px}
.meta-label,.meta-company{display:block;font-size:9px;letter-spacing:1.2px;color:#999}
.meta-label{margin-bottom:4px}
.hero-meta strong{font-size:13px;font-weight:600;display:block;margin-bottom:3px}
.gold{color:var(--gold)}
.meta-company{letter-spacing:.2px;font-size:11px}
.scroll-cue{display:flex;align-items:center;gap:12px;font-size:9px;letter-spacing:1.8px;color:#92928c;margin-top:42px}
.scroll-icon{border:1px solid var(--line);border-radius:50%;width:28px;height:28px;display:grid;place-items:center;color:var(--gold);font-size:15px}
.hero-visual{position:relative;max-width:480px;width:100%;justify-self:end}
.portrait-frame{padding:13px;border:1px solid rgba(245,211,47,.3);position:relative;background:rgba(255,255,255,.015)}
.portrait-topline,.portrait-caption{display:flex;justify-content:space-between;align-items:center;font-size:8px;letter-spacing:1.7px;color:#aaa;padding:7px 4px 12px}
.portrait{width:100%;aspect-ratio:4/5;object-fit:cover;object-position:center 30%;filter:saturate(.82);background:#eee}
.portrait-caption{padding:14px 4px 3px;gap:8px;letter-spacing:1px;flex-wrap:wrap}
.caption-dot{width:6px;height:6px;background:var(--gold);border-radius:50%;flex:none}
.caption-year{margin-left:auto;color:var(--gold)}
.vertical-label{position:absolute;right:-32px;top:24%;writing-mode:vertical-rl;font-size:8px;letter-spacing:2px;color:#a7a69c}
.hero-number{position:absolute;bottom:-42px;left:-30px;font-family:Manrope,sans-serif;font-size:53px;font-weight:700;color:var(--gold);letter-spacing:-3px}
.hero-number span{font-size:13px;color:#888;letter-spacing:0;margin-left:5px}
.hero-bottom-rule{position:absolute;bottom:0;left:0;right:0;display:flex;align-items:center;gap:15px;color:#73736d;font-size:8px;letter-spacing:1.7px}
.hero-bottom-rule span:first-child{height:1px;background:var(--gold);width:55px}
.hero-bottom-rule span:nth-child(2){margin-right:auto}
/* 各内容区统一上下留白 */
.section-pad{padding-top:115px;padding-bottom:120px}
.section-heading{display:grid;grid-template-columns:1fr 2fr;column-gap:30px;align-items:start;margin-bottom:56px}
.section-index{font-size:11px;letter-spacing:1.6px;color:var(--gold);padding-top:13px}
.section-index span{color:#777;margin-left:9px;font-size:9px}
h2{font-size:clamp(35px,4.5vw,60px);line-height:1.12;letter-spacing:-2.5px;margin:0;font-weight:600}
h2 em{font-style:normal;color:var(--gold)}
.overview-content{margin-left:calc(33.333% + 10px);max-width:720px}
.lead{font-size:22px;line-height:1.55;max-width:720px}
.overview-content>p:not(.lead){color:var(--muted);font-size:14px;line-height:1.9;max-width:700px}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:38px;border-top:1px solid var(--line);padding-top:25px}
.stat strong{display:block;font:700 28px Manrope,sans-serif;color:var(--gold);letter-spacing:-1px}
.stat span{font-size:11px;color:#aaa}
/* 品牌重点区：亮黄色背景与深色文字 */
.alpaca-section,.background-section{background:var(--gold);color:#121212;position:relative;overflow:hidden}
.alpaca-section:before,.background-section:before{content:"";position:absolute;width:420px;height:420px;border:1px solid rgba(0,0,0,.1);border-radius:50%;right:-160px;top:-190px;box-shadow:0 0 0 45px rgba(0,0,0,.025),0 0 0 90px rgba(0,0,0,.02)}
.light-heading .section-index{color:#1a1a1a}
.light-heading .section-index span{color:rgba(0,0,0,.55)}
.light-heading h2 em{color:#fff}
.heading-aside{grid-column:2;margin:20px 0 0;max-width:380px;color:rgba(0,0,0,.65);font-size:13px}
/* Alpaca 品牌卡片与业务重点列表 */
.alpaca-feature{display:grid;grid-template-columns:.78fr 1.22fr;gap:48px;align-items:stretch}
.alpaca-brand-card{background:#101111;color:#f7f6f0;padding:28px;display:flex;flex-direction:column;min-height:365px}
.logo-shell{height:118px;background:#ffeb00;display:grid;place-items:center;padding:20px;margin-bottom:28px;overflow:hidden}
.logo-shell img{width:min(100%,255px);height:100%;object-fit:contain}
.brand-card-label{font-size:9px;letter-spacing:1.8px;color:#999}
.alpaca-brand-card h3{font-size:34px;letter-spacing:-1px;margin:7px 0}
.alpaca-brand-card p{font-size:12px;color:#b1b1aa;max-width:250px}
.brand-card-bottom{display:flex;justify-content:space-between;align-items:center;border-top:1px solid #353535;padding-top:15px;margin-top:auto;font-size:9px;letter-spacing:1.2px;color:var(--gold)}
.role-grid{display:flex;flex-direction:column}
.role-item{display:grid;grid-template-columns:35px 1fr 20px;gap:13px;align-items:start;border-bottom:1px solid rgba(0,0,0,.2);padding:20px 0}
.role-item:first-child{padding-top:0}
.role-num{font-size:10px;letter-spacing:1px;padding-top:4px;color:rgba(0,0,0,.6)}
.role-item h3{font-size:16px;margin-bottom:6px;letter-spacing:-.3px}
.role-item p{font-size:12px;line-height:1.8;color:rgba(0,0,0,.7);margin:0;max-width:470px}
.role-arrow{font-size:17px}
.experience-intro{margin-left:33.333%;max-width:590px;color:var(--muted);font-size:14px;line-height:1.9;margin-top:-25px;margin-bottom:45px}
/* 职业经历时间线 */
.timeline{position:relative}
.timeline:before{content:"";position:absolute;left:calc(33.333% + 6px);top:12px;bottom:15px;width:1px;background:var(--line)}
.timeline-item{display:grid;grid-template-columns:33.333% 20px 1fr 35px;gap:18px;position:relative;padding:0 0 35px}
.timeline-date{text-align:right;color:#96968f;font-size:9px;letter-spacing:1.5px;padding-top:7px}
.timeline-marker{width:12px;height:12px;border:2px solid var(--gold);background:var(--bg);border-radius:50%;margin:7px 0 0 0;z-index:1}
.timeline-item.current .timeline-marker{background:var(--gold);box-shadow:0 0 0 5px rgba(245,211,47,.12)}
.timeline-body{padding:0 0 25px;border-bottom:1px solid var(--line)}
.timeline-company{display:flex;align-items:center;gap:13px;margin-bottom:12px}
.company-symbol{width:39px;height:39px;display:grid;place-items:center;border:1px solid var(--line);font:700 17px Manrope,sans-serif;color:var(--gold)}
.alpaca-symbol{background:var(--gold);color:#101010;border-color:var(--gold)}
.timeline-company h3{font-size:19px;margin:0 0 2px}
.timeline-company span:not(.company-symbol){font-size:10px;color:#999}
.timeline-body p{font-size:12px;line-height:1.8;color:var(--muted);max-width:650px;margin:0}
.timeline-index{font:500 12px Manrope,sans-serif;color:#5d5d57;padding-top:6px;text-align:right}
/* 专业背景卡片网格 */
.background-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.background-card{border:1px solid rgba(0,0,0,.22);padding:26px;min-height:235px;display:flex;flex-direction:column}
.card-icon{font-size:24px;margin-bottom:26px}
.card-label{font-size:9px;letter-spacing:1.5px;color:rgba(0,0,0,.65)}
.background-card h3{font-size:22px;line-height:1.25;margin:9px 0 12px;letter-spacing:-.6px}
.background-card p{font-size:12px;line-height:1.8;color:rgba(0,0,0,.75);margin:0}
.career-path{display:flex;align-items:center;justify-content:space-between;gap:15px;border-top:1px solid rgba(0,0,0,.25);margin-top:35px;padding-top:22px;font-size:9px;letter-spacing:1.4px;flex-wrap:wrap}
.career-path b{font-size:17px;font-weight:400}
/* 行业影响内容的双栏布局 */
.focus-layout{display:grid;grid-template-columns:1fr 1fr;gap:9%;align-items:start}
.focus-lead{font:600 clamp(23px,2.7vw,35px)/1.35 Manrope,sans-serif;letter-spacing:-1px;max-width:400px}
.focus-copy p{font-size:13px;color:var(--muted);line-height:1.95;margin-bottom:20px}
.focus-tags{display:flex;gap:9px;flex-wrap:wrap;margin-top:38px}
.focus-tags span{border:1px solid var(--line);padding:10px 13px;font-size:8px;letter-spacing:1.2px;color:#c7c5b9}
.site-footer{border-top:1px solid var(--line);padding:30px max(40px,calc((100% - var(--max))/2));position:relative;z-index:1}
.footer-top,.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:20px}
.footer-brand .brand-label{max-width:none}
.back-top{font-size:9px;letter-spacing:1.5px;color:#aaa}
.footer-bottom{border-top:1px solid var(--line);margin-top:26px;padding-top:18px;color:#777;font-size:8px;letter-spacing:1.2px;flex-wrap:wrap}
@media(min-width:1500px){.hero{min-height:780px}}
/* 平板和窄屏笔记本的布局调整 */
@media(max-width:900px){.section-wrap,.site-header{width:calc(100% - 48px)}.desktop-nav{gap:18px}.hero{min-height:650px;gap:4%;grid-template-columns:1fr .8fr}h1{letter-spacing:-4px}.section-pad{padding-top:85px;padding-bottom:90px}.alpaca-feature{gap:28px}.alpaca-brand-card{padding:20px}.section-heading{grid-template-columns:.7fr 2fr}.overview-content,.experience-intro{margin-left:26%}.timeline:before{left:calc(26% + 6px)}.timeline-item{grid-template-columns:26% 20px 1fr 25px;gap:13px}.site-footer{padding-inline:24px}}
/* 手机端：单栏布局、折叠菜单和防横向溢出 */
@media(max-width:640px){
  html{scroll-padding-top:70px}
  .section-wrap,.site-header{width:calc(100% - 36px);max-width:100%}
  .site-header{height:72px}
  .brand{gap:9px}.brand-mark{font-size:23px}.brand-label{font-size:8px;letter-spacing:1.3px;max-width:82px}
  .desktop-nav{display:none;position:absolute;top:71px;left:0;right:0;padding:18px;background:#151616;border:1px solid var(--line);flex-direction:column;align-items:stretch;gap:0}
  .desktop-nav.open{display:flex}.desktop-nav a{padding:12px 4px;border-bottom:1px solid var(--line);font-size:13px}.desktop-nav a:last-child{border:0}
  .header-cta{font-size:9px;padding:10px 11px;margin-left:auto;margin-right:12px}.header-cta span{padding-left:4px}
  .menu-toggle{display:flex;flex-direction:column;gap:5px;padding:8px 0 8px 8px;flex:none}.menu-toggle span{width:20px;height:1px;background:var(--gold)}
  .hero{display:flex;flex-direction:column;align-items:stretch;gap:24px;padding-top:36px;padding-bottom:55px;min-height:0}
  .hero-copy{padding:0}
  .eyebrow{font-size:8px;letter-spacing:1.25px;margin-bottom:34px;gap:8px}
  .eyebrow-line{width:22px;flex:none}
  .hero-kicker{font-size:9px;letter-spacing:1.7px}
  h1{font-size:clamp(60px,17vw,86px);letter-spacing:-4px;margin-bottom:18px;overflow-wrap:normal}
  .hero-title{font-size:21px;line-height:1.35}
  .desktop-break{display:none}
  .hero-intro{font-size:13px;line-height:1.85;margin-bottom:25px}
  .hero-meta{padding-top:17px;gap:12px}
  .meta-symbol{width:38px;height:38px;flex:none}
  .hero-meta strong{font-size:12px}
  .meta-company{font-size:10px;line-height:1.6}
  .scroll-cue{margin-top:25px;font-size:8px}
  .hero-visual{width:calc(100% - 24px);max-width:420px;align-self:center;margin:10px 12px 18px 0}
  .portrait-frame{padding:9px}
  .portrait-topline,.portrait-caption{font-size:7px;letter-spacing:1px}
  .portrait{aspect-ratio:4/4.4;object-position:center 28%}
  .vertical-label{right:-18px;font-size:7px}
  .hero-number{left:-12px;bottom:-35px;font-size:43px}
  .hero-bottom-rule{gap:8px;font-size:7px;letter-spacing:1px}
  .hero-bottom-rule span:first-child{width:25px}
  .section-pad{padding-top:68px;padding-bottom:72px}
  .section-heading{display:block;margin-bottom:32px}
  .section-index{font-size:10px;padding-top:0;margin-bottom:17px}
  h2{font-size:clamp(34px,9.5vw,47px);letter-spacing:-1.8px;line-height:1.13}
  .overview-content,.experience-intro{margin-left:0}
  .lead{font-size:19px;line-height:1.55}
  .overview-content>p:not(.lead){font-size:13px}
  .stat-row{gap:10px;margin-top:27px;padding-top:20px}
  .stat strong{font-size:24px}.stat span{font-size:10px;line-height:1.5;display:block}
  .heading-aside{margin:17px 0 0;font-size:12px}
  .alpaca-feature{grid-template-columns:1fr;gap:27px}
  .alpaca-brand-card{min-height:0;padding:20px}
  .logo-shell{height:100px;margin-bottom:22px;padding:15px}
  .alpaca-brand-card h3{font-size:30px}
  .role-item{grid-template-columns:27px 1fr 15px;gap:10px;padding:17px 0}
  .role-item h3{font-size:15px;line-height:1.4}
  .role-item p{font-size:12px}
  .experience-intro{margin-top:0;margin-bottom:34px;font-size:13px}
  .timeline:before{left:5px}
  .timeline-item{grid-template-columns:18px minmax(0,1fr) 22px;gap:12px;padding-bottom:25px}
  .timeline-date{grid-column:2;text-align:left;grid-row:1;padding:0 0 8px;font-size:8px}
  .timeline-marker{grid-column:1;grid-row:1;margin-top:3px}
  .timeline-body{grid-column:2;grid-row:2;padding-bottom:20px;min-width:0}
  .timeline-index{grid-column:3;grid-row:2;font-size:10px}
  .timeline-company h3{font-size:18px}
  .timeline-company span:not(.company-symbol){font-size:9px;line-height:1.5}
  .timeline-body p{font-size:12px}
  .background-grid{grid-template-columns:1fr;gap:12px}
  .background-card{min-height:0;padding:22px}
  .card-icon{margin-bottom:18px}
  .background-card h3{font-size:21px}
  .career-path{justify-content:flex-start;gap:10px;font-size:8px;letter-spacing:.8px;line-height:1.6}
  .career-path b{font-size:13px}
  .focus-layout{grid-template-columns:1fr;gap:18px}
  .focus-lead{font-size:26px;margin-bottom:0}
  .focus-copy p{font-size:13px}
  .focus-tags{margin-top:25px;gap:7px}
  .focus-tags span{font-size:7px;padding:9px 10px;letter-spacing:.8px}
  .site-footer{padding:25px 18px}
  .footer-top{align-items:flex-start}
  .footer-bottom{font-size:7px;gap:8px;line-height:1.8}
}
/* 超窄屏手机：进一步缩小边距与标签间距 */
@media(max-width:360px){.section-wrap,.site-header{width:calc(100% - 28px)}.header-cta{padding:9px 8px;font-size:8px}.brand-label{max-width:70px}.hero-bottom-rule{letter-spacing:.5px}.caption-year{margin-left:0}.career-path{gap:7px}.career-path span{font-size:7px}}
/* 尊重系统减少动态效果的偏好 */
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}


/* ===== 本轮整改：导航 Logo、全设备排版与横向溢出修复 ===== */

/* 统一盒模型与页面宽度，避免子元素撑宽视口产生右侧黑边 */
html {
  width: 100%;
  max-width: 100%;
  overflow-x: clip;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}
body {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow-x: clip;
  font-family: "DM Sans", "Manrope", -apple-system, BlinkMacSystemFont,
    "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  font-kerning: normal;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
main, header, footer, section, article, nav, div {
  min-width: 0;
}
img, video, svg {
  max-width: 100%;
}

/* 顶部与底部统一展示最新 Alpaca 图片 Logo */
.brand-image {
  display: inline-flex;
  align-items: center;
  flex: 0 1 230px;
  width: min(230px, 28vw);
  max-width: 230px;
  min-width: 110px;
  overflow: hidden;
  background: #050000;
}
.brand-image img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 64px;
  object-fit: contain;
}
.site-header {
  gap: 24px;
}
.desktop-nav {
  flex: 0 1 auto;
  min-width: 0;
}
.desktop-nav a {
  white-space: nowrap;
}

/* 移除职业经历公司标题前的旧方形字母图标后，保持标题对齐 */
.timeline-company {
  gap: 0;
}
.timeline-company h3 {
  overflow-wrap: anywhere;
}

/* 标题和正文使用流体字号，在桌面、平板、手机之间平滑缩放 */
h1 {
  font-size: clamp(3.25rem, 7.2vw, 7rem);
  letter-spacing: clamp(-6px, -0.42vw, -2px);
}
h2 {
  font-size: clamp(2.1rem, 4.3vw, 3.8rem);
  letter-spacing: clamp(-2.5px, -0.18vw, -1px);
}
h3 {
  overflow-wrap: anywhere;
}
p, li, a, span {
  overflow-wrap: break-word;
}
.hero-intro, .overview-content p, .role-item p, .timeline-body p,
.background-card p, .focus-copy p {
  text-wrap: pretty;
}

/* 处理装饰光斑超出屏幕边界的问题 */
.ambient {
  max-width: 100vw;
  contain: paint;
}
.ambient-one {
  right: 0;
  transform: translateX(50%);
}
.ambient-two {
  left: 0;
  transform: translateX(-50%);
}

/* 平板：导航自动收紧，内容区改用安全的弹性宽度 */
@media (max-width: 900px) {
  .site-header {
    width: calc(100% - 48px);
    gap: 16px;
  }
  .brand-image {
    width: 180px;
    min-width: 120px;
  }
  .desktop-nav {
    gap: clamp(10px, 2vw, 18px);
  }
  .desktop-nav a {
    font-size: 11px;
  }
  .section-wrap {
    width: calc(100% - 48px);
  }
}

/* 手机：取消可能撑宽页面的元素，导航菜单限制在视口内 */
@media (max-width: 640px) {
  html, body {
    width: 100%;
    max-width: 100%;
    overflow-x: clip;
  }
  .site-header, .section-wrap {
    width: calc(100% - 32px);
    max-width: calc(100% - 32px);
  }
  .site-header {
    gap: 10px;
    justify-content: space-between;
  }
  .brand-image {
    width: clamp(112px, 38vw, 165px);
    min-width: 0;
    max-width: 165px;
  }
  .brand-image img {
    max-height: 48px;
  }
  .desktop-nav {
    left: 0;
    right: 0;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }
  .menu-toggle {
    margin-left: auto;
  }
  .hero, .overview, .experience, .focus,
  .alpaca-section, .background-section, .site-footer {
    max-width: 100%;
  }
  .hero-visual {
    max-width: calc(100% - 18px);
  }
  .vertical-label {
    right: -10px;
  }
  .hero-number {
    left: -8px;
  }
  .section-heading, .overview-content, .focus-layout,
  .timeline-item, .background-grid, .alpaca-feature {
    min-width: 0;
    max-width: 100%;
  }
  .timeline-item {
    grid-template-columns: 16px minmax(0, 1fr) 18px;
    gap: 9px;
  }
  .timeline-body, .timeline-company, .timeline-company > div {
    min-width: 0;
  }
  .timeline-company h3 {
    font-size: clamp(17px, 5vw, 20px);
  }
  .career-path {
    max-width: 100%;
  }
  .footer-brand {
    width: clamp(112px, 38vw, 165px);
  }
  .footer-top, .footer-bottom {
    min-width: 0;
  }
  .footer-bottom span {
    max-width: 100%;
    overflow-wrap: anywhere;
  }
}

/* 小尺寸手机：进一步减少边距，避免导航和文字挤压 */
@media (max-width: 380px) {
  .site-header, .section-wrap {
    width: calc(100% - 26px);
    max-width: calc(100% - 26px);
  }
  .brand-image, .footer-brand {
    width: 108px;
  }
  .menu-toggle span {
    width: 18px;
  }
  h1 {
    font-size: clamp(3rem, 16vw, 4rem);
    letter-spacing: -2.5px;
  }
  h2 {
    font-size: clamp(1.95rem, 9vw, 2.35rem);
  }
  .hero-bottom-rule {
    letter-spacing: .35px;
  }
}

/* 桌面大屏：限制正文行长，提升阅读舒适度 */
@media (min-width: 1200px) {
  .overview-content, .focus-copy, .timeline-body {
    line-height: 1.9;
  }
}

/* 尊重用户系统的减少动态效果设置 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}


/* ===== 本轮修复：Logo 背景融合、品牌卡片居中、移动端防横向溢出 ===== */

/* 页面背景与顶部/底部 Logo 的黑色背景统一，消除图片矩形边框 */
.brand-image {
  background: #0d0e0e !important;
  flex: 0 1 230px;
  width: min(230px, 28vw);
  min-width: 0;
  max-width: 230px;
  align-self: center;
}
.brand-image img {
  width: 100%;
  height: auto;
  max-height: 66px;
  object-fit: contain;
  object-position: center;
}

/* 第二部分 Logo 容器：使用 Flex 居中，图片不再偏下或贴边 */
.alpaca-brand-card .logo-shell {
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 100%;
  min-height: 118px;
  height: 118px;
  padding: 10px 14px !important;
  margin: 0 0 24px;
  background: #ffeb00 !important;
  overflow: hidden;
  box-sizing: border-box;
}
.alpaca-brand-card .logo-shell img {
  display: block;
  width: min(100%, 390px);
  max-width: 100%;
  max-height: 100%;
  height: auto;
  object-fit: contain;
  object-position: center center;
  margin: auto;
}

/* 统一视口与盒模型；对不完整支持 overflow:clip 的旧浏览器使用 hidden 兜底 */
html {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden !important;
  overscroll-behavior-x: none;
}
body {
  position: relative;
  width: 100%;
  max-width: 100%;
  min-width: 0 !important;
  overflow-x: hidden !important;
  overscroll-behavior-x: none;
}
*, *::before, *::after {
  box-sizing: border-box;
}
main, header, footer, section, article, nav, aside,
.site-header, .section-wrap, .hero, .alpaca-feature,
.timeline, .background-grid, .focus-layout {
  min-width: 0;
  max-width: 100%;
}
img, video, iframe, svg, canvas {
  max-width: 100%;
}

/* 背景装饰固定在视口内，避免绝对定位和模糊滤镜扩大页面滚动宽度 */
.ambient {
  position: fixed !important;
  max-width: 100vw;
  pointer-events: none;
  overflow: hidden;
  contain: strict;
}
.ambient-one {
  right: 0 !important;
  transform: translateX(50%);
}
.ambient-two {
  left: 0 !important;
  transform: translateX(-50%);
}

/* 确保所有主内容按视口居中，不继承可能导致偏移的旧宽度 */
@media (max-width: 640px) {
  html, body {
    width: 100vw !important;
    max-width: 100vw !important;
    overflow-x: hidden !important;
  }
  body {
    margin: 0 !important;
    padding: 0 !important;
  }
  .site-header, .section-wrap {
    width: calc(100% - 36px) !important;
    max-width: calc(100% - 36px) !important;
    margin-left: auto !important;
    margin-right: auto !important;
  }
  .site-header {
    left: auto !important;
    right: auto !important;
    padding-left: 0;
    padding-right: 0;
  }
  main {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    overflow-x: clip;
  }
  .hero, .overview, .experience, .focus {
    width: calc(100% - 36px);
    margin-left: auto;
    margin-right: auto;
  }
  .alpaca-section, .background-section {
    width: 100%;
    margin-left: 0;
    margin-right: 0;
    overflow: hidden;
  }
  .alpaca-section > .section-wrap,
  .background-section > .section-wrap {
    width: calc(100% - 36px) !important;
    max-width: calc(100% - 36px) !important;
    margin-inline: auto !important;
  }
  .hero-copy, .hero-visual, .overview-content, .section-heading,
  .timeline-body, .background-grid, .focus-layout, .alpaca-feature {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    margin-left: 0;
    margin-right: 0;
  }
  .hero-visual {
    align-self: center;
  }
  .hero-number {
    left: 0;
  }
  .vertical-label {
    right: 0;
  }
  .hero-bottom-rule {
    left: 0;
    right: 0;
    max-width: 100%;
  }
  .alpaca-brand-card {
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }
  .alpaca-brand-card .logo-shell {
    height: 104px;
    min-height: 104px;
    padding: 8px 12px !important;
  }
  .alpaca-brand-card .logo-shell img {
    width: min(100%, 340px);
    max-height: 88px;
  }
  .footer-top, .footer-bottom {
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }
  .footer-brand {
    flex: 0 1 165px;
    width: min(165px, 43vw);
    min-width: 0;
  }
}

/* 极窄屏手机：保留足够左右安全边距，避免内容贴边 */
@media (max-width: 380px) {
  .site-header, .section-wrap,
  .hero, .overview, .experience, .focus,
  .alpaca-section > .section-wrap,
  .background-section > .section-wrap {
    width: calc(100% - 28px) !important;
    max-width: calc(100% - 28px) !important;
  }
  .site-header {
    width: calc(100% - 28px) !important;
  }
  .brand-image, .footer-brand {
    width: min(145px, 42vw);
  }
}

/* 大屏桌面 Logo 稍作放大；保持与导航垂直居中 */
@media (min-width: 1200px) {
  .brand-image {
    width: 230px;
  }
}