/* ========================================
   咏梦行川工作室 · 山川风格官网样式
   Color palette: 墨色 / 青黛 / 山雾 / 朱砂
   ======================================== */

/* ---------- Variables ---------- */
:root {
  --ink:        #0e1418;
  --ink-light:  #1a2228;
  --ink-mid:    #2a343b;
  --qing:       #5a8a7c;
  --qing-light: #7bb5a4;
  --qing-dark:  #3e6b5e;
  --shan:       #4a6b7c;
  --wu:         #c8d0d4;
  --wu-light:   #e5e9eb;
  --zhusha:     #c5392f;
  --zhusha-soft:#d4594f;
  --parchment:  #f4f0eb;
  --cream:      #faf8f5;
  --gold:       #c9a96e;
  --gold-light: #e2d5b0;
  --text:       #2a2a2a;
  --text-light: #666;
  --text-muted: #999;
  --white:      #ffffff;
  --radius:     6px;
  --radius-lg:  12px;
  --shadow-sm:  0 2px 8px rgba(14,20,24,.06);
  --shadow:     0 4px 24px rgba(14,20,24,.08);
  --shadow-lg:  0 8px 48px rgba(14,20,24,.12);
  --font-zh:    'Noto Serif SC', '思源宋体', 'Songti SC', STSong, serif;
  --font-en:    'Cormorant Garamond', 'Georgia', serif;
  --font-ui:    'Manrope', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --transition: .4s cubic-bezier(.23,1,.32,1);
  --ease-out:   cubic-bezier(.16,1,.3,1);
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth;-webkit-font-smoothing:antialiased;overflow-x:hidden}
body{font-family:var(--font-ui);color:var(--text);background:var(--cream);line-height:1.8;overflow-x:hidden;min-height:100vh}
a{text-decoration:none;color:inherit;transition:color var(--transition)}
img{max-width:100%;height:auto;display:block}
button{border:none;cursor:pointer;background:transparent;font-family:inherit}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 clamp(20px,4vw,60px)}

/* ---------- 开屏动画 ---------- */
.loader{
  position:fixed;inset:0;z-index:9999;display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  background:
    radial-gradient(circle at 50% 16%,rgba(244,240,235,.055),transparent 30%),
    linear-gradient(180deg,var(--ink) 0%,#111b20 62%,var(--ink) 100%);
  overflow:hidden;
  transform-origin:center bottom;
  clip-path:inset(0 0 0 0 round 0);
  transition:
    clip-path 1.05s cubic-bezier(.22,1,.36,1),
    opacity .65s ease,
    visibility 1.05s;
}
.loader.done{
  opacity:.98;
  visibility:visible;
  pointer-events:none;
  clip-path:inset(0 0 100% 0 round 0 0 42px 42px);
}
.loader__ink{
  position:absolute;inset:0;
  background:radial-gradient(circle at 50% 50%,transparent 0%,var(--ink) 70%);
  animation:inkSpread 2s var(--ease-out) forwards;
  transition:opacity .95s cubic-bezier(.22,1,.36,1),transform .95s cubic-bezier(.22,1,.36,1);
}
.loader.done .loader__ink{opacity:.18;transform:translateY(-18px) scale(1.05)}
@keyframes inkSpread{
  0%{background:radial-gradient(circle at 50% 50%,rgba(90,138,124,.15) 0%,var(--ink) 5%)}
  100%{background:radial-gradient(circle at 50% 50%,rgba(90,138,124,.06) 0%,var(--ink) 80%)}
}
.loader__mountain{
  position:absolute;bottom:0;width:100%;height:40%;
  fill:var(--ink-light);opacity:0;
  animation:mountainRise 1.6s .4s var(--ease-out) forwards;
  transform-origin:center bottom;
  transition:transform 1.05s cubic-bezier(.22,1,.36,1),opacity 1.05s cubic-bezier(.22,1,.36,1);
}
.loader.done .loader__mountain{
  opacity:.58;
  transform:translateY(-8%) scale(1.02);
}
@keyframes mountainRise{
  0%{transform:translateY(100%);opacity:0}
  100%{transform:translateY(0);opacity:.5}
}
.loader__brand{
  position:relative;z-index:2;display:flex;gap:8px;
  font-family:var(--font-zh);color:var(--wu);font-size:clamp(2rem,6vw,4rem);
  font-weight:700;letter-spacing:.15em;
  transition:opacity .6s cubic-bezier(.22,1,.36,1),transform .6s cubic-bezier(.22,1,.36,1);
}
.loader.done .loader__brand{
  opacity:0;
  transform:translateY(-18px) scale(.98);
}
.loader__char{
  display:inline-block;opacity:0;transform:translateY(30px);
  animation:charReveal .7s calc(.6s + var(--d)) var(--ease-out) forwards;
}
.loader__char--small{font-size:.6em;align-self:flex-end;margin-bottom:.1em}
@keyframes charReveal{
  to{opacity:1;transform:translateY(0)}
}
.loader__seal{
  position:relative;z-index:2;
  font-family:var(--font-en);color:var(--gold);
  font-size:.8rem;letter-spacing:.35em;margin-top:18px;
  opacity:0;animation:charReveal .6s 1.4s var(--ease-out) forwards;
  transition:opacity .55s cubic-bezier(.22,1,.36,1),transform .55s cubic-bezier(.22,1,.36,1);
}
.loader.done .loader__seal{
  opacity:0;
  transform:translateY(-12px);
}
.loader::before{
  content:'';
  position:absolute;
  inset:0;
  opacity:.16;
  background-image:
    radial-gradient(circle at 18% 22%,rgba(255,255,255,.14) 0 1px,transparent 1.5px),
    radial-gradient(circle at 72% 64%,rgba(255,255,255,.1) 0 1px,transparent 1.5px);
  background-size:42px 42px,58px 58px;
  pointer-events:none;
}
.loader::after{
  content:'';
  position:absolute;
  left:-15%;
  right:-15%;
  bottom:-70px;
  height:170px;
  background:
    linear-gradient(180deg,transparent,rgba(200,208,212,.14),transparent),
    linear-gradient(90deg,transparent 0%,rgba(200,208,212,.08) 25%,rgba(200,208,212,.18) 50%,rgba(200,208,212,.08) 75%,transparent 100%);
  opacity:0;
  transform:translate3d(10%,0,0);
  transition:opacity .9s cubic-bezier(.22,1,.36,1),transform .9s cubic-bezier(.22,1,.36,1);
}
.loader.done::after{
  opacity:1;
  transform:translate3d(-8%,-58vh,0);
}
.loader.gone{visibility:hidden}

/* ---------- 顶部导航 ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 clamp(20px,4vw,60px);height:72px;
  transition:background .5s,box-shadow .5s,height .3s;
}
.nav.scrolled{
  background:rgba(250,248,245,.92);backdrop-filter:blur(16px);
  box-shadow:var(--shadow-sm);height:60px;
}
.nav__brand{display:flex;align-items:baseline;gap:10px}
.nav__brand-zh{
  font-family:var(--font-zh);font-size:1.35rem;font-weight:700;
  color:var(--wu-light);transition:color var(--transition);letter-spacing:.1em;
}
.nav.scrolled .nav__brand-zh{color:var(--ink)}
.nav__brand-en{
  font-family:var(--font-en);font-size:.7rem;color:var(--text-muted);
  letter-spacing:.2em;display:none;
}
.nav.scrolled .nav__brand-en{display:inline}
.nav__menu{display:flex;gap:0}
.nav__item{
  position:relative;padding:0 16px;height:72px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;font-size:.88rem;
  color:rgba(255,255,255,.75);transition:color var(--transition);
}
.nav.scrolled .nav__item{color:var(--text-light);height:60px}
.nav__item i{
  font-style:normal;font-family:var(--font-en);font-size:.6rem;
  letter-spacing:.15em;color:var(--text-muted);opacity:0;
  transform:translateY(-4px);transition:all var(--transition);
}
.nav__item:hover i,.nav__item.active i{opacity:1;transform:translateY(0)}
.nav__item::after{
  content:'';position:absolute;bottom:12px;left:50%;width:0;height:1.5px;
  background:var(--qing);transform:translateX(-50%);transition:width var(--transition);
}
.nav__item:hover::after,.nav__item.active::after{width:24px}
.nav__item:hover{color:var(--white)}
.nav.scrolled .nav__item:hover{color:var(--ink)}

/* 汉堡按钮 */
.nav__toggle{display:none;width:28px;height:20px;position:relative;z-index:1001}
.nav__toggle span{
  position:absolute;left:0;width:100%;height:2px;background:var(--wu-light);
  border-radius:2px;transition:all .35s var(--ease-out);
}
.nav.scrolled .nav__toggle span{background:var(--ink)}
.nav__toggle span:nth-child(1){top:0}
.nav__toggle span:nth-child(2){top:50%;transform:translateY(-50%)}
.nav__toggle span:nth-child(3){bottom:0}
.nav__toggle.open span:nth-child(1){top:50%;transform:translateY(-50%) rotate(45deg)}
.nav__toggle.open span:nth-child(2){opacity:0}
.nav__toggle.open span:nth-child(3){bottom:50%;transform:translateY(50%) rotate(-45deg)}

/* ---------- 通用动画类 ---------- */
.reveal{opacity:0;transform:translateY(40px);transition:opacity .8s var(--ease-out),transform .8s var(--ease-out)}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-left{opacity:0;transform:translateX(-50px);transition:opacity .8s var(--ease-out),transform .8s var(--ease-out)}
.reveal-left.visible{opacity:1;transform:translateX(0)}
.reveal-right{opacity:0;transform:translateX(50px);transition:opacity .8s var(--ease-out),transform .8s var(--ease-out)}
.reveal-right.visible{opacity:1;transform:translateX(0)}
.reveal-scale{opacity:0;transform:scale(.92);transition:opacity .8s var(--ease-out),transform .8s var(--ease-out)}
.reveal-scale.visible{opacity:1;transform:scale(1)}

/* stagger children */
.stagger > *{opacity:0;transform:translateY(30px);transition:opacity .6s var(--ease-out),transform .6s var(--ease-out)}
.stagger.visible > *:nth-child(1){transition-delay:.0s;opacity:1;transform:none}
.stagger.visible > *:nth-child(2){transition-delay:.08s;opacity:1;transform:none}
.stagger.visible > *:nth-child(3){transition-delay:.16s;opacity:1;transform:none}
.stagger.visible > *:nth-child(4){transition-delay:.24s;opacity:1;transform:none}
.stagger.visible > *:nth-child(5){transition-delay:.32s;opacity:1;transform:none}
.stagger.visible > *:nth-child(6){transition-delay:.40s;opacity:1;transform:none}
.stagger.visible > *:nth-child(7){transition-delay:.48s;opacity:1;transform:none}
.stagger.visible > *:nth-child(8){transition-delay:.56s;opacity:1;transform:none}

/* ---------- 文字墨迹下划线 ---------- */
.ink-underline{
  display:inline;
  background-image:linear-gradient(120deg,var(--qing) 0%,var(--qing-light) 100%);
  background-repeat:no-repeat;background-size:0% 2px;background-position:0 100%;
  transition:background-size .6s var(--ease-out);padding-bottom:2px;
}
.ink-underline:hover,.ink-underline.visible{background-size:100% 2px}

/* ---------- Hero (首页) ---------- */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;
  overflow:hidden;background:var(--ink);
}
.hero__bg{
  position:absolute;inset:0;overflow:hidden;
}
/* 多层山脉视差 */
.hero__mountain{
  position:absolute;bottom:0;width:100%;
}
.hero__mountain--far{
  height:55%;
  background:linear-gradient(180deg,transparent 0%,rgba(42,52,59,.6) 100%);
  clip-path:polygon(0% 100%,0% 55%,8% 40%,16% 50%,24% 30%,32% 45%,40% 25%,48% 40%,56% 20%,64% 38%,72% 22%,80% 42%,88% 28%,96% 38%,100% 32%,100% 100%);
  animation:mountainFloat 12s ease-in-out infinite alternate;
}
.hero__mountain--mid{
  height:45%;
  background:linear-gradient(180deg,transparent 0%,rgba(26,34,40,.7) 100%);
  clip-path:polygon(0% 100%,0% 60%,6% 50%,14% 58%,22% 42%,30% 55%,38% 38%,46% 52%,54% 35%,62% 48%,70% 32%,78% 50%,86% 40%,94% 55%,100% 45%,100% 100%);
  animation:mountainFloat 10s 1s ease-in-out infinite alternate-reverse;
}
.hero__mountain--near{
  height:35%;
  background:linear-gradient(180deg,transparent 0%,rgba(14,20,24,.85) 100%);
  clip-path:polygon(0% 100%,0% 65%,5% 55%,12% 62%,20% 50%,28% 60%,36% 48%,44% 58%,52% 45%,60% 56%,68% 42%,76% 55%,84% 48%,92% 58%,100% 52%,100% 100%);
  animation:mountainFloat 8s .5s ease-in-out infinite alternate;
}
@keyframes mountainFloat{
  0%{transform:translateY(0)}
  100%{transform:translateY(-8px)}
}

/* 流动的雾/云 */
.hero__mist{
  position:absolute;bottom:20%;width:200%;height:120px;
  background:linear-gradient(90deg,transparent 0%,rgba(200,208,212,.08) 25%,rgba(200,208,212,.12) 50%,rgba(200,208,212,.08) 75%,transparent 100%);
  animation:mistFlow 20s linear infinite;
}
.hero__mist--2{bottom:35%;height:80px;opacity:.5;animation-duration:28s;animation-direction:reverse}
@keyframes mistFlow{
  0%{transform:translateX(0)}
  100%{transform:translateX(-50%)}
}

/* 星点/萤火 */
.hero__particles{position:absolute;inset:0}
.hero__particle{
  position:absolute;width:2px;height:2px;border-radius:50%;
  background:var(--gold-light);opacity:0;
  animation:particlePulse var(--dur) var(--delay) ease-in-out infinite;
}
@keyframes particlePulse{
  0%,100%{opacity:0;transform:translateY(0)}
  50%{opacity:.7;transform:translateY(-20px)}
}

/* 日/月光晕 */
.hero__glow{
  position:absolute;top:18%;left:50%;width:clamp(120px,20vw,280px);height:clamp(120px,20vw,280px);
  border-radius:50%;transform:translateX(-50%);
  background:radial-gradient(circle,rgba(201,169,110,.18) 0%,transparent 70%);
  animation:glowPulse 6s ease-in-out infinite alternate;
}
@keyframes glowPulse{
  0%{transform:translateX(-50%) scale(1);opacity:.7}
  100%{transform:translateX(-50%) scale(1.15);opacity:1}
}

/* Hero 文字 */
.hero__content{
  position:relative;z-index:10;text-align:center;color:var(--wu-light);
  padding:0 20px;
}
.hero__kicker{
  font-family:var(--font-en);font-size:.75rem;letter-spacing:.4em;
  color:var(--gold);text-transform:uppercase;margin-bottom:16px;
  opacity:0;animation:heroFadeUp .8s 2.2s var(--ease-out) forwards;
}
.hero__title{
  font-family:var(--font-zh);font-weight:900;
  font-size:clamp(2.4rem,8vw,5.6rem);line-height:1.2;letter-spacing:.12em;
  margin-bottom:10px;
}
.hero__title span{
  display:inline-block;opacity:0;
  animation:heroFadeUp .9s var(--ease-out) forwards;
}
.hero__title span:nth-child(1){animation-delay:2.0s}
.hero__title span:nth-child(2){animation-delay:2.15s}
.hero__title span:nth-child(3){animation-delay:2.3s}
.hero__title span:nth-child(4){animation-delay:2.45s}
.hero__subtitle{
  font-family:var(--font-zh);font-size:clamp(1rem,2.5vw,1.3rem);
  font-weight:300;color:rgba(200,208,212,.7);margin-top:20px;
  opacity:0;animation:heroFadeUp .8s 2.8s var(--ease-out) forwards;
}
.hero__cta{
  margin-top:40px;opacity:0;
  animation:heroFadeUp .8s 3.1s var(--ease-out) forwards;
}
@keyframes heroFadeUp{
  0%{opacity:0;transform:translateY(30px)}
  100%{opacity:1;transform:translateY(0)}
}

/* 向下箭头 */
.hero__scroll{
  position:absolute;bottom:40px;left:50%;transform:translateX(-50%);z-index:10;
  opacity:0;animation:heroFadeUp .8s 3.4s var(--ease-out) forwards;
}
.hero__scroll svg{animation:scrollBounce 2s ease-in-out infinite}
@keyframes scrollBounce{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(8px)}
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 32px;border-radius:var(--radius);font-size:.9rem;
  font-weight:500;letter-spacing:.05em;transition:all var(--transition);
}
.btn--primary{
  background:var(--qing);color:var(--white);
  box-shadow:0 4px 16px rgba(90,138,124,.25);
}
.btn--primary:hover{background:var(--qing-dark);transform:translateY(-2px);box-shadow:0 6px 24px rgba(90,138,124,.35)}
.btn--outline{
  border:1.5px solid var(--wu);color:var(--wu-light);background:transparent;
}
.btn--outline:hover{border-color:var(--qing-light);color:var(--qing-light)}
.btn--dark{background:var(--ink);color:var(--wu-light)}
.btn--dark:hover{background:var(--ink-mid)}

/* ---------- Section 通用 ---------- */
.section{padding:clamp(60px,10vw,120px) 0;position:relative}
.section--dark{background:var(--ink);color:var(--wu-light)}
.section--alt{background:var(--parchment)}
.section__header{text-align:center;margin-bottom:clamp(40px,6vw,80px)}
.section__kicker{
  font-family:var(--font-en);font-size:.72rem;letter-spacing:.35em;
  color:var(--qing);text-transform:uppercase;margin-bottom:10px;
}
.section__title{
  font-family:var(--font-zh);font-size:clamp(1.6rem,4vw,2.6rem);
  font-weight:700;letter-spacing:.08em;line-height:1.4;
}
.section--dark .section__title{color:var(--wu-light)}
.section__line{
  width:40px;height:2px;background:var(--qing);margin:16px auto 0;
  transition:width .6s var(--ease-out);
}
.section__header:hover .section__line{width:80px}

/* ---------- 山脉分隔线 ---------- */
.mountain-divider{
  position:relative;width:100%;height:80px;overflow:hidden;
  margin-top:-1px;
}
.mountain-divider svg{position:absolute;bottom:0;width:100%;height:100%}
.mountain-divider__far{fill:rgba(90,138,124,.15)}
.mountain-divider__mid{fill:rgba(90,138,124,.1)}
.mountain-divider__near{fill:var(--cream)}
.section--dark + .mountain-divider .mountain-divider__near{fill:var(--cream)}
.mountain-divider--footer{margin-top:0;height:60px;background:transparent}
.mountain-divider--footer .mountain-divider__far{fill:rgba(14,20,24,.3)}
.mountain-divider--footer .mountain-divider__mid{fill:rgba(14,20,24,.5)}
.mountain-divider--footer .mountain-divider__near{fill:var(--ink)}

/* ---------- 水墨笔触装饰 ---------- */
.ink-stroke{
  display:inline-block;position:relative;
}
.ink-stroke::after{
  content:'';position:absolute;bottom:-.12em;left:-.05em;
  width:110%;height:.35em;
  background:linear-gradient(90deg,var(--qing) 0%,var(--qing-light) 100%);
  opacity:.18;border-radius:50%;z-index:-1;
  transform:scaleX(0);transform-origin:left;
  transition:transform .6s var(--ease-out);
}
.ink-stroke:hover::after,.visible .ink-stroke::after{transform:scaleX(1)}

/* ---------- Stats / 数据 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(16px,3vw,40px);text-align:center;margin-top:50px}
.stats__item{padding:20px 10px}
.stats__num{
  font-family:var(--font-en);font-size:clamp(2rem,5vw,3.2rem);
  font-weight:700;color:var(--qing-light);line-height:1;
  display:flex;align-items:baseline;justify-content:center;gap:2px;
}
.stats__num span{font-size:.55em;color:var(--gold)}
.stats__label{
  font-size:.82rem;color:var(--text-muted);margin-top:8px;letter-spacing:.05em;
}
.section--dark .stats__label{color:rgba(200,208,212,.6)}

/* ---------- Services 服务 ---------- */
.services-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:clamp(20px,3vw,36px)}
.service-card{
  background:var(--white);border-radius:var(--radius-lg);padding:clamp(28px,4vw,42px);
  position:relative;overflow:hidden;transition:all var(--transition);
  border:1px solid rgba(0,0,0,.04);
}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.service-card__icon{
  width:56px;height:56px;border-radius:50%;
  background:linear-gradient(135deg,var(--qing),var(--qing-light));
  display:flex;align-items:center;justify-content:center;margin-bottom:20px;
  color:var(--white);font-family:var(--font-zh);font-size:1.1rem;font-weight:700;
  transition:transform var(--transition);
}
.service-card:hover .service-card__icon{transform:scale(1.1) rotate(-5deg)}
.service-card__title{
  font-family:var(--font-zh);font-size:1.15rem;font-weight:700;margin-bottom:4px;
}
.service-card__subtitle{
  font-family:var(--font-en);font-size:.72rem;color:var(--text-muted);
  letter-spacing:.15em;margin-bottom:14px;
}
.service-card__desc{font-size:.88rem;color:var(--text-light);line-height:1.8}
.service-card__tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:16px}
.service-card__tag{
  padding:3px 10px;border-radius:20px;font-size:.72rem;
  background:var(--parchment);color:var(--text-muted);
}
/* 笔触角装饰 */
.service-card::before{
  content:'';position:absolute;top:-30px;right:-30px;width:80px;height:80px;
  background:radial-gradient(circle,var(--qing) 0%,transparent 70%);
  opacity:0;transition:opacity var(--transition);border-radius:50%;
}
.service-card:hover::before{opacity:.08}

/* ---------- Portfolio 作品 ---------- */
.portfolio-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:clamp(16px,3vw,28px)}
.portfolio-card{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  aspect-ratio:4/3;cursor:pointer;group:portfolio;
}
.portfolio-card__img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .8s var(--ease-out);
  background:linear-gradient(135deg,var(--ink-light),var(--ink-mid));
}
.portfolio-card:hover .portfolio-card__img{transform:scale(1.06)}
.portfolio-card__overlay{
  position:absolute;inset:0;display:flex;flex-direction:column;justify-content:flex-end;
  padding:clamp(20px,3vw,36px);
  background:linear-gradient(0deg,rgba(14,20,24,.75) 0%,rgba(14,20,24,.1) 50%,transparent 100%);
  opacity:0;transition:opacity .5s var(--ease-out);
}
.portfolio-card:hover .portfolio-card__overlay{opacity:1}
.portfolio-card__category{
  font-family:var(--font-en);font-size:.68rem;letter-spacing:.2em;
  color:var(--gold);text-transform:uppercase;margin-bottom:6px;
}
.portfolio-card__title{
  font-family:var(--font-zh);font-size:1.2rem;font-weight:700;color:var(--white);
}
.portfolio-card__sub{font-size:.82rem;color:rgba(255,255,255,.7);margin-top:4px}
/* 水墨墨点 placeholder */
.portfolio-card__placeholder{
  width:100%;height:100%;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--ink-light) 0%,var(--ink-mid) 100%);
  font-family:var(--font-zh);font-size:2.4rem;font-weight:300;color:var(--ink);
  letter-spacing:.2em;position:relative;
}
.portfolio-card__placeholder::after{
  content:'';position:absolute;inset:0;
  background:radial-gradient(circle at 30% 40%,rgba(90,138,124,.2) 0%,transparent 60%),
             radial-gradient(circle at 70% 60%,rgba(201,169,110,.15) 0%,transparent 50%);
}

/* ---------- News 新闻 ---------- */
.news-list{display:flex;flex-direction:column;gap:clamp(20px,3vw,36px)}
.news-card{
  display:grid;grid-template-columns:auto 1fr;gap:clamp(20px,3vw,40px);
  align-items:start;padding:clamp(20px,3vw,36px);
  background:var(--white);border-radius:var(--radius-lg);
  border:1px solid rgba(0,0,0,.04);transition:all var(--transition);
}
.news-card:hover{transform:translateX(6px);box-shadow:var(--shadow)}
.news-card__date{
  display:flex;flex-direction:column;align-items:center;min-width:64px;
  padding:12px 8px;border-right:2px solid var(--qing);
}
.news-card__day{font-family:var(--font-en);font-size:2rem;font-weight:700;color:var(--qing);line-height:1}
.news-card__month{font-size:.72rem;color:var(--text-muted);margin-top:4px}
.news-card__body{}
.news-card__cat{
  font-family:var(--font-en);font-size:.68rem;letter-spacing:.15em;
  color:var(--gold);text-transform:uppercase;margin-bottom:6px;
}
.news-card__title{
  font-family:var(--font-zh);font-size:1.1rem;font-weight:600;
  line-height:1.5;margin-bottom:8px;transition:color var(--transition);
}
.news-card:hover .news-card__title{color:var(--qing)}
.news-card__summary{font-size:.88rem;color:var(--text-light);line-height:1.7}
.news-card__more{
  display:inline-flex;align-items:center;gap:4px;margin-top:12px;
  font-size:.82rem;color:var(--qing);font-weight:500;
}
.news-card__more svg{transition:transform var(--transition)}
.news-card:hover .news-card__more svg{transform:translateX(4px)}

/* ---------- Team 团队 ---------- */
.team-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:clamp(20px,3vw,36px)}
.team-card{text-align:center;padding:30px 20px}
.team-card__avatar{
  width:100px;height:100px;min-width:100px;min-height:100px;
  border-radius:50%;margin:0 auto 16px;
  background:linear-gradient(135deg,var(--qing),var(--shan));
  position:relative;overflow:hidden;
  font-family:var(--font-zh);font-size:1.6rem;color:var(--white);font-weight:700;
  transition:transform var(--transition),box-shadow var(--transition);
}
.team-card__avatar img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.team-card__initial{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}
.team-card__avatar--image .team-card__initial{display:none}
.team-card__avatar--image.is-fallback .team-card__initial{display:flex}
.team-card:hover .team-card__avatar{transform:translateY(-6px);box-shadow:0 12px 32px rgba(90,138,124,.3)}
.team-card__name{font-family:var(--font-zh);font-size:1.05rem;font-weight:600;margin-bottom:4px}
.team-card__role{font-size:.78rem;color:var(--qing);margin-bottom:8px}
.team-card__desc{font-size:.82rem;color:var(--text-muted);line-height:1.7}

/* ---------- Clients ---------- */
.clients-track{
  display:flex;gap:clamp(30px,5vw,60px);
  animation:clientsScroll 30s linear infinite;
  width:fit-content;
}
.clients-wrapper{overflow:hidden;padding:20px 0}
.clients-track__item{
  flex-shrink:0;padding:12px 24px;
  font-family:var(--font-zh);font-size:1rem;color:var(--text-muted);
  white-space:nowrap;opacity:.5;transition:opacity var(--transition);
  letter-spacing:.1em;
}
.clients-track__item:hover{opacity:1}
@keyframes clientsScroll{
  0%{transform:translateX(0)}
  100%{transform:translateX(-50%)}
}

/* ---------- Contact Form ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,5vw,60px);align-items:start}
.contact-info{padding:20px 0}
.contact-info__item{
  display:flex;align-items:flex-start;gap:16px;margin-bottom:24px;
}
.contact-info__icon{
  width:42px;height:42px;border-radius:50%;flex-shrink:0;
  background:var(--parchment);display:flex;align-items:center;justify-content:center;
  color:var(--qing);font-size:.9rem;
}
.contact-info__text h4{font-size:.88rem;font-weight:600;margin-bottom:2px}
.contact-info__text p{font-size:.84rem;color:var(--text-light)}
.contact-form{background:var(--white);border-radius:var(--radius-lg);padding:clamp(24px,4vw,40px);box-shadow:var(--shadow-sm)}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:.82rem;font-weight:500;margin-bottom:6px;color:var(--text)}
.form-input{
  width:100%;padding:10px 14px;border:1.5px solid rgba(0,0,0,.08);
  border-radius:var(--radius);font-size:.88rem;font-family:inherit;
  background:var(--parchment);transition:border-color var(--transition),box-shadow var(--transition);
  color:var(--text);
}
.form-input:focus{outline:none;border-color:var(--qing);box-shadow:0 0 0 3px rgba(90,138,124,.12)}
textarea.form-input{resize:vertical;min-height:120px}

/* ---------- News Detail ---------- */
.article{max-width:760px;margin:0 auto;padding-top:120px}
.article__back{
  display:inline-flex;align-items:center;gap:6px;font-size:.84rem;
  color:var(--text-muted);margin-bottom:24px;
}
.article__back:hover{color:var(--qing)}
.article__meta{
  font-family:var(--font-en);font-size:.72rem;letter-spacing:.15em;
  color:var(--gold);margin-bottom:10px;
}
.article__title{
  font-family:var(--font-zh);font-size:clamp(1.4rem,3.5vw,2.2rem);
  font-weight:700;line-height:1.4;margin-bottom:20px;
}
.article__cover{
  width:100%;border-radius:var(--radius-lg);margin-bottom:30px;
  aspect-ratio:16/7;object-fit:cover;
  background:linear-gradient(135deg,var(--ink-light),var(--ink-mid));
}
.article__body{font-size:.95rem;line-height:2;color:var(--text)}
.article__body p{margin-bottom:1.2em}

/* ---------- Page Header (子页面) ---------- */
.page-header{
  position:relative;min-height:360px;display:flex;align-items:center;
  justify-content:center;text-align:center;overflow:hidden;
  background:var(--ink);
}
.page-header__bg{
  position:absolute;inset:0;
}
.page-header__mountains{
  position:absolute;bottom:0;width:100%;height:50%;
}
.page-header__mountains--far{
  position:absolute;bottom:0;width:100%;height:100%;
  background:var(--ink-light);
  clip-path:polygon(0% 100%,0% 50%,10% 35%,20% 45%,30% 25%,40% 40%,50% 20%,60% 35%,70% 18%,80% 38%,90% 25%,100% 35%,100% 100%);
  opacity:.4;
}
.page-header__mountains--near{
  position:absolute;bottom:0;width:100%;height:70%;
  background:var(--ink-mid);
  clip-path:polygon(0% 100%,0% 60%,8% 50%,16% 58%,24% 42%,32% 55%,40% 40%,48% 52%,56% 38%,64% 50%,72% 35%,80% 48%,88% 38%,100% 48%,100% 100%);
  opacity:.3;
}
.page-header__content{position:relative;z-index:10;padding-top:80px}
.page-header__kicker{
  font-family:var(--font-en);font-size:.72rem;letter-spacing:.35em;
  color:var(--gold);text-transform:uppercase;margin-bottom:10px;
}
.page-header__title{
  font-family:var(--font-zh);font-size:clamp(1.8rem,5vw,3rem);
  font-weight:700;color:var(--wu-light);letter-spacing:.1em;
}
.page-header__sub{
  font-size:.9rem;color:rgba(200,208,212,.6);margin-top:10px;
  font-family:var(--font-zh);
}

/* ---------- About Page ---------- */
.about-intro{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,5vw,60px);align-items:center}
.about-intro__text h3{
  font-family:var(--font-zh);font-size:1.4rem;font-weight:700;margin-bottom:16px;
}
.about-intro__text p{font-size:.92rem;color:var(--text-light);line-height:2;margin-bottom:12px}
.about-intro__image{
  border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:4/5;
  background:linear-gradient(135deg,var(--ink-light),var(--ink-mid));
  position:relative;
}
.about-intro__image::before{
  content:'行川';position:absolute;top:50%;left:50%;
  transform:translate(-50%,-50%);font-family:var(--font-zh);
  font-size:4rem;color:rgba(90,138,124,.2);font-weight:900;letter-spacing:.3em;
}
.timeline{position:relative;padding:40px 0;max-width:700px;margin:0 auto}
.timeline::before{
  content:'';position:absolute;top:0;bottom:0;left:50%;width:2px;
  background:linear-gradient(180deg,transparent,var(--qing),transparent);
  transform:translateX(-50%);
}
.timeline__item{
  position:relative;padding:0 0 40px;display:grid;
  grid-template-columns:1fr 1fr;gap:30px;align-items:center;
}
.timeline__item:nth-child(odd) .timeline__content{grid-column:1;text-align:right}
.timeline__item:nth-child(odd) .timeline__year{grid-column:2}
.timeline__item:nth-child(even) .timeline__content{grid-column:2}
.timeline__item:nth-child(even) .timeline__year{grid-column:1;text-align:right}
.timeline__dot{
  position:absolute;left:50%;top:0;width:12px;height:12px;
  border-radius:50%;background:var(--qing);border:3px solid var(--cream);
  transform:translateX(-50%);z-index:2;
}
.timeline__year{
  font-family:var(--font-en);font-size:1.8rem;font-weight:700;
  color:var(--qing-light);opacity:.4;
}
.timeline__content h4{font-family:var(--font-zh);font-size:1rem;font-weight:600;margin-bottom:4px}
.timeline__content p{font-size:.84rem;color:var(--text-light);line-height:1.7}

/* ---------- Footer ---------- */
.footer{background:var(--ink);color:var(--wu);padding:clamp(40px,6vw,80px) 0 24px}
.footer__grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:clamp(20px,4vw,40px);margin-bottom:40px}
.footer__logo{font-family:var(--font-zh);font-size:1.6rem;font-weight:700;color:var(--wu-light);letter-spacing:.15em}
.footer__logo-en{font-family:var(--font-en);font-size:.68rem;letter-spacing:.2em;color:var(--text-muted);margin-top:4px}
.footer__tagline{font-size:.84rem;color:rgba(200,208,212,.5);margin-top:12px}
.footer__links h4,.footer__contact h4,.footer__social h4{
  font-family:var(--font-zh);font-size:.84rem;font-weight:600;
  color:var(--wu-light);margin-bottom:14px;letter-spacing:.08em;
}
.footer__links a{display:block;font-size:.82rem;color:rgba(200,208,212,.55);padding:3px 0;transition:color var(--transition)}
.footer__links a:hover{color:var(--qing-light)}
.footer__contact p{font-size:.82rem;color:rgba(200,208,212,.55);line-height:1.8}
.social-icon{
  display:inline-flex;width:36px;height:36px;border-radius:50%;
  border:1px solid rgba(200,208,212,.2);align-items:center;justify-content:center;
  color:var(--wu);transition:all var(--transition);margin-right:6px;
}
.social-icon:hover{border-color:var(--qing);color:var(--qing-light);transform:translateY(-2px)}
.footer__bottom{
  border-top:1px solid rgba(200,208,212,.1);padding-top:20px;
  text-align:center;font-size:.72rem;color:rgba(200,208,212,.35);
}

/* ---------- Back to top ---------- */
.back-top{
  position:fixed;right:24px;bottom:24px;z-index:900;
  width:44px;height:44px;border-radius:50%;
  background:rgba(14,20,24,.8);color:var(--wu-light);
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:all var(--transition);backdrop-filter:blur(8px);
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{background:var(--qing);transform:translateY(-3px)}

/* ---------- Pagination ---------- */
.pagination{display:flex;justify-content:center;gap:6px;margin-top:40px}
.pagination a,.pagination span{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:36px;height:36px;border-radius:var(--radius);
  font-size:.84rem;border:1px solid rgba(0,0,0,.08);
  transition:all var(--transition);
}
.pagination a:hover{border-color:var(--qing);color:var(--qing)}
.pagination .current{background:var(--qing);color:var(--white);border-color:var(--qing)}

/* ---------- Flash 消息 ---------- */
.flash{padding:12px 20px;border-radius:var(--radius);margin-bottom:20px;font-size:.88rem}
.flash--success{background:#ecf7f0;color:#2a7d4f;border:1px solid #c3e8cf}
.flash--error{background:#fdf0ef;color:#c5392f;border:1px solid #f0c8c5}
.flash--info{background:#edf4f8;color:#3a6b8c;border:1px solid #c5d8e5}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .nav__menu{
    position:fixed;inset:0;background:rgba(14,20,24,.97);backdrop-filter:blur(16px);
    flex-direction:column;align-items:center;justify-content:center;gap:0;
    opacity:0;visibility:hidden;transition:all .4s var(--ease-out);z-index:999;
  }
  .nav__menu.open{opacity:1;visibility:visible}
  .nav__menu .nav__item{color:var(--wu-light);height:52px;font-size:1rem}
  .nav__toggle{display:block}
  .about-intro{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr 1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .portfolio-grid{grid-template-columns:1fr}
  .timeline::before{left:20px}
  .timeline__item{grid-template-columns:1fr;padding-left:50px}
  .timeline__item:nth-child(odd) .timeline__content,
  .timeline__item:nth-child(even) .timeline__content{grid-column:1;text-align:left}
  .timeline__item:nth-child(odd) .timeline__year,
  .timeline__item:nth-child(even) .timeline__year{grid-column:1;text-align:left}
  .timeline__dot{left:20px}
}
@media(max-width:600px){
  .footer__grid{grid-template-columns:1fr}
  .hero__title{letter-spacing:.06em}
  .services-grid{grid-template-columns:1fr}
  .team-grid{grid-template-columns:repeat(2,1fr)}
  .news-card{grid-template-columns:1fr}
  .news-card__date{flex-direction:row;gap:8px;border-right:none;border-bottom:2px solid var(--qing);padding-bottom:8px;margin-bottom:4px}
}