:root{--enter-duration:900ms;--enter-stagger:80ms;--enter-max-delay:240ms;--enter-easing:cubic-bezier(.25,.46,.45,.94)}
:root{--gold:#897257;--ink:#30302e;--red:#b52027;--sans:'Zhigao Sans','PingFang SC','Microsoft YaHei',sans-serif;--serif:'Zhigao Serif','Songti SC','STSong','SimSun',serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;color:var(--ink);background:#fff;font-family:var(--sans);font-size:14px}a{color:inherit;text-decoration:none}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--gold);outline-offset:5px}img{max-width:100%}h1,h2,h3,p,figure,dl,dd{margin:0}h2{font:700 30px/1.5 var(--serif);letter-spacing:1px}h2 small{font:300 17px/1.5 Arial,sans-serif;letter-spacing:0;color:#bbb;margin-left:10px}h3{font-size:18px;font-weight:500;line-height:1.7}.wrap{max-width:1130px;width:calc(100% - 80px);margin:auto}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.header{height:82px;position:absolute;top:0;left:0;z-index:20;width:100%;display:flex;align-items:center;justify-content:space-between;padding:0 7.5%;color:white;background:linear-gradient(#1b172c88,transparent)}.logo{width:180px;flex:none}.logo img{display:block}.logo .dark{display:none}.header nav{display:flex;gap:clamp(22px,3vw,56px);font-size:13px;letter-spacing:2px}.header nav a{padding:20px 0}.header a:hover{opacity:.7}.tools{display:flex;align-items:center;gap:24px}.tools button{color:inherit;background:none;border:0;padding:10px;display:flex;gap:10px;align-items:center;font-size:12px}.search-icon{display:block;width:14px;height:14px;border:1px solid currentColor;border-radius:50%;position:relative;margin:0 4px 3px 0;flex:none}.search-icon:after{content:'';position:absolute;width:6px;height:1px;background:currentColor;right:-5px;bottom:-3px;transform:rotate(45deg)}.tools .menu-toggle{display:flex;flex-direction:column;gap:5px}.menu-toggle span{height:1px;width:21px;background:currentColor}.hero{height:49.3vw;max-height:960px;background-image:url('https://static.chihkao.com/style/ui-practice/assets/design.jpg');background-size:100% auto;background-position:center -4.1vw;background-repeat:no-repeat;background-color:#635950}.about{max-width:980px;display:grid;grid-template-columns:1.4fr 1fr;gap:110px;padding:72px 0 80px}.about h2{color:var(--red);margin-bottom:25px}.about p{font-size:15px;line-height:2;color:#92928b;margin-bottom:14px}.button{display:inline-flex;background:var(--gold);color:white;align-items:center;gap:25px;justify-content:space-between;padding:10px 17px;font-family:var(--serif);font-size:17px;letter-spacing:2px;transition:background .2s}.button:hover{background:#6b563e}.about .button{margin-top:32px}.numbers{display:flex;flex-direction:column;justify-content:space-around;padding:55px 0 15px;gap:40px}.numbers>div{display:flex;align-items:center;gap:28px}.numbers dt{font-family:var(--sans);font-weight:200;font-stretch:condensed;font-size:54px;letter-spacing:-3px;color:#99896c;min-width:126px}.numbers dt span{font-size:33px;vertical-align:middle}.numbers dd{font-size:15px;line-height:1.8;letter-spacing:2px;color:#999;border-left:1px solid #ddd;padding-left:25px}.cases{display:grid;grid-template-columns:1fr 1fr}.case{min-height:330px;display:flex;flex-direction:column;justify-content:space-between;color:white;background-size:cover;background-position:center;position:relative}.case:before{content:'';position:absolute;inset:0;background:#0005;transition:background .3s}.case:hover:before{background:#0003}.case h2,.case p{position:relative}.case h2{text-align:center;margin-top:92px}.case p{background:#0008;padding:22px 12%;font-size:17px;line-height:1.8}.case p span{float:right}.achievement{background-image:url('https://static.chihkao.com/style/ui-practice/assets/pic5.jpg')}.studies{background-image:linear-gradient(#6c371d55,#6c371d55),url('https://static.chihkao.com/style/ui-practice/assets/pic4.jpg')}.updates{padding:70px 0 65px}.updates h2{color:var(--gold);margin-bottom:42px}.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:85px}.news-grid h3{font-size:23px;line-height:1.7;font-weight:500;min-height:85px}.news-grid p{font-size:14px;line-height:2;letter-spacing:1px;color:#888;margin:28px 0}.news-grid a:hover h3{color:var(--gold)}time{color:#bbb;font-size:13px;letter-spacing:1px}.text-link{display:flex;width:max-content;max-width:100%;margin:52px auto 0;align-items:center;gap:20px;font-size:13px;letter-spacing:2px;color:#b4a58e}.people{position:relative;overflow:hidden;min-height:650px;background:#4d453c;color:white}.office-art{position:absolute;inset:0;background:url('https://static.chihkao.com/style/ui-practice/assets/design.jpg') no-repeat;background-size:480% auto;background-position:0 64%;filter:brightness(.75)}.people-content{position:relative;padding-top:40px}.people h2{margin-bottom:160px}.people-panel{background:#333;display:grid;grid-template-columns:1fr 1.1fr;gap:55px;max-width:940px;margin:auto;padding:34px 42px}.people-panel h3{letter-spacing:3px}.people-panel p{font-size:13px;line-height:1.9;letter-spacing:1px;color:#ccc;margin-top:12px}.input-box{display:flex;align-items:center;background:#555;min-height:47px}.input-box input{border:0;min-width:0;width:100%;padding:14px;background:transparent;color:inherit;outline-offset:0}.input-box input::placeholder{color:#b4b4b4}.input-box button{border:0;background:none;padding:15px;color:inherit}.people-panel a{display:block;text-align:center;margin-top:20px;font-size:13px;letter-spacing:2px}.people-panel a:hover{text-decoration:underline}.honors{background:var(--gold);color:#fff}.honor-grid{display:grid;grid-template-columns:repeat(5,1fr);grid-template-rows:repeat(2,215px)}.honor-heading{grid-row:span 2;padding:42px 10px 20px 0}.honor-heading h2{font-size:30px}.honor-heading>small{display:block;color:#c4b59f;margin:10px 0 35px}.honor-heading p{color:#bbab93;font:24px/1.9 Georgia,serif}.award{padding:28px 25px;display:flex;flex-direction:column;justify-content:space-between;background:#a08a7066}.award:nth-child(3n){background:#70583f55}.award p{font-size:13px;line-height:1.9}.award>span{color:#c9bba8;text-align:right;font-size:23px}.award:hover{background:#bba58a66}.logo-award{background:#c1b3a6;padding:15px;justify-content:center;align-items:center}.logo-award strong{font:700 58px/.85 Georgia,serif;letter-spacing:-5px;color:#f2ece4}.alb{background:#29251f;align-items:center;justify-content:center;padding:15px}.alb>div{background:#ddd4bf;border:8px double #b18a49;border-radius:50%;width:160px;height:160px;text-align:center;display:flex;flex-direction:column;justify-content:center;color:#514536}.alb strong{font:30px Georgia,serif;color:#ab874b}.alb small{font-size:7px;margin:5px 0 12px}.alb b{font-size:11px}.award-type{font:32px/1.35 Georgia,serif;color:#bdab93;letter-spacing:4px;justify-content:center;text-align:center}.contact{position:relative;overflow:hidden;min-height:450px;color:white;background:#554b40}.contact-art{position:absolute;inset:0;background:url('https://static.chihkao.com/style/ui-practice/assets/design.jpg') no-repeat;background-size:250% auto;background-position:100% 89%;filter:brightness(.6)}.contact-content{position:relative;padding:40px 0}.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;max-width:990px;margin:32px auto 0}.contact-grid>div{padding:35px 45px;background:#221d18a6}.contact-grid h3{margin-bottom:22px;letter-spacing:2px}.contact-grid .button{width:100%;font:15px Arial,sans-serif;letter-spacing:1px;padding:16px 20px}.contact .text-link{color:#e0d6c8;margin-top:35px}footer{background:#111;color:#8c8c88;padding:50px 0 25px;font-size:11px}.footer-logo{display:block;width:190px;margin:0 auto 35px}footer nav{display:flex;justify-content:center;gap:22px;margin-bottom:50px}.footer-main{display:grid;grid-template-columns:1fr 185px;gap:100px}.footer-main>div{border-top:1px solid #41413e;border-bottom:1px solid #41413e;padding:30px 0;line-height:2.8}.footer-main .red{color:var(--red);font-size:17px}.footer-main figure{text-align:center}.footer-main figure img{width:150px;display:block;margin:auto}.footer-main figcaption{margin-top:12px;color:#ddd}.footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:30px}dialog{border:0;background:#fbfaf7;color:#333;width:min(600px,calc(100% - 36px));padding:60px 45px;box-shadow:0 20px 100px #0004}dialog::backdrop{background:#141310b3}dialog h2{margin-bottom:24px}dialog label{display:block;font-size:13px;color:#777;margin-bottom:12px}dialog .input-box{background:#e9e5dd}.close{position:absolute;right:20px;top:12px;background:none;border:0;color:var(--gold);font-size:32px}#menu nav{display:grid;gap:22px}#menu nav a{font:24px var(--serif);display:flex;justify-content:space-between;gap:20px}#menu nav small{font:13px Arial;color:#a19179}#menu>p{border-top:1px solid #d8d0c3;padding-top:25px;margin-top:30px;color:var(--gold)}body.modal-open{overflow:hidden}@media(min-width:1921px){.hero{background-size:1920px auto;background-position:center -80px}}@media(max-width:1100px){.header{padding:0 4%;height:70px}.header nav{gap:20px;font-size:12px}.logo{width:145px}.tools{gap:5px}.search-open>span:last-child{display:none}.about{gap:55px}.numbers dt{font-size:45px;min-width:110px}.news-grid{gap:35px}.honor-grid{grid-template-rows:repeat(2,190px)}.award{padding:20px 15px}.alb>div{width:130px;height:130px}.people-panel{max-width:90%}}@media(max-width:760px){html{scroll-padding-top:20px}.wrap{width:calc(100% - 40px)}.header{height:65px;padding:0 20px}.header nav{display:none}.logo{width:150px}.hero{height:76vh;min-height:480px;max-height:760px;background-size:auto 360%;background-position:center 0}.about{display:block;padding:42px 0}.about h2{margin-bottom:20px}h2{font-size:25px}h2 small{font-size:14px}.about p{font-size:14px;line-height:1.95}.about .button{margin-top:12px}.numbers{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;padding:35px 0 0}.numbers>div{display:block}.numbers dt{font-size:38px;min-width:0;letter-spacing:-2px}.numbers dt span{font-size:22px}.numbers dd{font-size:11px;letter-spacing:0;border:0;padding:10px 0 0;line-height:1.7}.cases{grid-template-columns:1fr}.case{min-height:250px}.case h2{margin-top:65px}.case p{padding:20px;font-size:14px}.updates{padding:42px 0}.updates h2{margin-bottom:25px}.news-grid{display:block}.news-grid>a{display:block;padding:22px 0;border-bottom:1px solid #e8e5df}.news-grid>a:first-child{padding-top:0}.news-grid h3{font-size:20px;min-height:0}.news-grid h3 br{display:none}.news-grid p{margin:13px 0;line-height:1.9;font-size:13px}.text-link{margin-top:28px}.people{min-height:510px}.people-content{padding-top:30px}.people h2{margin-bottom:90px}.people-panel{max-width:100%;grid-template-columns:1fr;gap:22px;padding:25px}.office-art{background-size:650% auto;background-position:0 63%}.honor-grid{grid-template-columns:repeat(2,1fr);grid-template-rows:auto; width:100%}.honor-heading{grid-column:span 2;grid-row:auto;display:flex;align-items:center;padding:28px 20px;gap:15px}.honor-heading h2{font-size:25px}.honor-heading>small{margin:0}.honor-heading p{font-size:14px;line-height:1.5}.honor-heading p br{display:none}.award{min-height:175px;padding:22px}.logo-award strong{font-size:51px}.award-type{font-size:27px}.contact{min-height:490px}.contact-content{padding:30px 0}.contact-grid{grid-template-columns:1fr;gap:15px;margin-top:25px}.contact-grid>div{padding:24px}.contact-grid h3{font-size:16px;margin-bottom:15px}.contact-art{background-size:550% auto;background-position:100% 88%}footer{padding:35px 0 25px}footer nav{gap:15px;flex-wrap:wrap;margin-bottom:30px}.footer-main{grid-template-columns:1fr;gap:25px}.footer-main figure img{width:110px}.footer-main>div{padding:20px 0}.footer-main .red{font-size:15px}.footer-logo{width:165px;margin-bottom:25px}dialog{padding:50px 25px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
/* 手机首屏保持设计稿画面比例，避免显示到原稿下一版块。 */
@media(max-width:760px){.hero{height:108vw;min-height:0;max-height:none;background-size:220% auto;background-position:center -9vw}}

/* 弹层轻量入场，与滚动淡入保持一致。 */
@keyframes dialog-enter {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: no-preference) {
  dialog[open] { animation: dialog-enter var(--enter-duration) var(--enter-easing); }
}

/* 首页与内页共用固定导航；脱离首屏后切换紧凑实色状态。 */
.header,
.practice-page .header {
  position: fixed;
  transition: background-color 220ms ease, color 220ms ease, height 220ms ease, box-shadow 220ms ease;
}
.header.is-scrolled,
.practice-page .header.is-scrolled {
  height: 70px;
  color: #30302e;
  background: #fff;
  box-shadow: 0 1px 0 rgba(48,48,46,.12);
}
.header.is-scrolled .logo .light { display: none; }
.header.is-scrolled .logo .dark { display: block; }
@media(max-width:760px) {
  .header.is-scrolled,
  .practice-page .header.is-scrolled { height: 60px; }
  html { scroll-padding-top: 80px; }
}
@media(prefers-reduced-motion:reduce) {
  .header, .practice-page .header { transition: none; }
}

/* PSD 独立图层：完整横幅构图，替换整页截图局部放大。 */
.office-art{background-image:url('https://static.chihkao.com/style/ui-practice/assets/people-background.png');background-size:100% 100%;background-position:center;filter:brightness(.75)}
.contact-art{background-image:url('https://static.chihkao.com/style/ui-practice/assets/contact-background.png');background-size:100% 100%;background-position:center;filter:brightness(.65)}
.people{min-height:0;height:34.58333vw}
.people-content{height:100%;padding-top:2.85vw}
.people h2{margin-bottom:0}
.people-panel{position:absolute;top:40%;left:7.5%;transform:none;width:85%;max-width:960px;background:rgba(45,45,45,.94);padding:30px;gap:40px}
.contact{min-height:0;height:24.47917vw}
.contact-content{height:100%;padding:2.4vw 0 0}
.contact-grid{margin-top:1.9vw;max-width:1080px}
.contact-grid>div{padding:2vw 2.8vw}
.contact-grid h3{margin-bottom:1.5vw}
.contact .text-link{margin-top:1.8vw}
.honor-grid{grid-template-rows:repeat(2,auto)}
.award{aspect-ratio:1;min-height:0}
.logo-award,.alb{padding:0}
.logo-award img,.alb img{width:100%;height:100%;object-fit:contain;display:block}
.award-type{padding:0;align-items:center}
.award-type img{width:64%;height:auto;display:block}
@media(max-width:1100px) and (min-width:761px){.people{height:430px}.contact{height:360px}.office-art,.contact-art{background-size:cover}.people-panel{padding:25px;gap:25px}.contact-grid>div{padding:25px}.contact-grid h3{margin-bottom:20px}}
@media(max-width:760px){
.people,.contact{height:auto;min-height:0}
.office-art,.contact-art{position:relative;inset:auto;background-size:100% 100%;filter:brightness(.8)}
.office-art{aspect-ratio:1920/664}.contact-art{aspect-ratio:1920/470}
.people-content{position:static;padding:0 0 28px}.people-content>h2{position:absolute;top:18px;left:20px}
.people-panel{position:relative;top:auto;left:auto;transform:none;width:100%;max-width:100%;margin:20px 0 0;padding:24px;gap:22px}
.contact-content{position:static;padding:0 0 28px}.contact-content>h2{position:absolute;top:18px;left:20px}
.contact-grid{margin-top:20px}.contact-grid>div{padding:24px}.contact-grid h3{margin-bottom:18px}.contact .text-link{margin-top:24px}
.award{min-height:175px;aspect-ratio:1}.logo-award,.alb{padding:0}.honor-heading{grid-row:auto}
}

/* 首屏和业绩案例改用 PSD 独立图层，保留原稿画面比例。 */
.hero{position:relative;height:auto;min-height:0;max-height:none;aspect-ratio:1920/1024;background-image:url('https://static.chihkao.com/style/ui-practice/assets/hero-background.png');background-size:100% 100%;background-position:center}
.hero-lettering{position:absolute;left:35.36458%;top:35.9375%;width:27.86458%;height:auto;display:block;pointer-events:none}
.achievement{background-image:url('https://static.chihkao.com/style/ui-practice/assets/achievement-background.png')}
.studies{background-image:url('https://static.chihkao.com/style/ui-practice/assets/case-background.png')}
.case{min-height:0;aspect-ratio:958/332;background-size:100% 100%;background-position:center}
.case h2{margin-top:11.5%}
.case p{padding:12px 12%;font-size:clamp(12px,1vw,17px)}
@media(max-width:760px){
/* 当前可视区域满屏，地址栏展开/收起时跟随可视高度。 */
.hero{height:100vh;height:100dvh;min-height:0;aspect-ratio:auto;background-size:cover;background-position:center}
.hero-lettering{left:50%;top:50%;width:76%;max-height:calc(100% - 150px);object-fit:contain;transform:translate(-50%,-50%)}
.case{min-height:230px;aspect-ratio:auto;background-size:cover}
.case h2{margin-top:55px}.case p{padding:16px 20px;font-size:14px}
}

/* Typography mapped to the supplied PSD font families. */
body{font-weight:400}button,input,select,textarea{font-family:var(--sans)}
h2 small{font-family:var(--sans);font-weight:300}
.header nav,.about p,.numbers dd,footer{font-weight:350}
.honor-heading p{font-family:var(--sans);font-weight:300}
.numbers dt{font-family:'Zhigao Numbers',Arial,sans-serif;font-weight:400;font-stretch:normal;letter-spacing:0}
.contact-grid .button,#menu nav small{font-family:var(--sans)}
.news-categories :is(button,a)[aria-current]{font-weight:700}

/* SVG保留原书法宽高比；动画结束即恢复原始图片。 */
.hero-lettering-reveal{aspect-ratio:535/249;overflow:hidden}
@media(prefers-reduced-motion:reduce){.hero-lettering-reveal{display:none}.hero-lettering{visibility:visible!important}}

/* Mobile intrinsic sizing: images and unbroken contact text must not widen the page. */
@media(max-width:760px){
  .honor-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .numbers{grid-template-columns:repeat(3,minmax(0,1fr))}
  .people-panel,.contact-grid,.footer-main{grid-template-columns:minmax(0,1fr)}
  .honor-grid>*,.people-panel>*,.contact-grid>*,.footer-main>*{min-width:0}
  .contact-grid .button{min-width:0;gap:12px;overflow-wrap:anywhere}
  .contact-grid .button>*{min-width:0}
  .footer-bottom{flex-wrap:wrap;overflow-wrap:anywhere}
  .footer-bottom>*{min-width:0;max-width:100%}
  .hero{overflow:hidden}
  .hero-lettering{aspect-ratio:535/249}
  .header .tools{flex-shrink:0}
  .header .logo{max-width:calc(100% - 94px)}
  /* Prevent focus-induced zoom in iOS without disabling user zoom. */
  input,select,textarea{font-size:16px}
}

/* Contact buttons use the mailbox, telephone and fax artwork from the homepage PSD. */
.contact-grid .contact-button{padding:0;gap:0;justify-content:flex-start;min-height:56px;border-radius:7px;overflow:hidden}
.contact-icons{display:flex;align-items:center;justify-content:center;align-self:stretch;flex:0 0 62px;padding:12px;background:rgba(67,43,21,.22)}
.contact-icons img{display:block;flex:none;width:32px;height:28px;object-fit:contain}
.contact-icons-phone{flex-basis:104px;gap:10px}
.contact-icons-phone img{width:25px;height:27px}
.contact-icon-divider{width:1px;height:27px;flex:none;background:rgba(255,255,255,.3)}
.contact-value{flex:1;min-width:0;padding:12px 14px;text-align:center;overflow-wrap:anywhere;line-height:1.5}
@media(max-width:760px){
 .contact-icons{flex-basis:48px;padding:10px}
 .contact-icons img{width:28px;height:25px}
 .contact-icons-phone{flex-basis:80px;gap:7px}
 .contact-icons-phone img{width:22px;height:24px}
 .contact-grid .contact-button{gap:0;font-size:14px;letter-spacing:0}
 .contact-value{padding:12px 8px}
}

.honors .logo-award,.honors .alb{background:#b9aa9666;padding:0}
.honors .logo-award img,.honors .alb img{width:100%;height:100%;object-fit:contain}

.honors .award-brand{padding:0;background:#b9aa9666;justify-content:center;align-items:center}.honors .award-brand img{display:block;width:100%;height:100%;object-fit:contain}

/* mobile-menu-baseline-v1 */
@media (max-width:760px) {
  #menu nav a { align-items:baseline; }
  #menu nav small { flex-shrink:0; line-height:1.4; }
}