/* ============ 基础变量（沉稳版：深松石绿 + 哑光古金 + 炭墨） ============ */
:root{
  --paper:#f3f1ea;
  --paper-2:#e8e4d7;
  --card:#faf8f1;
  --ink:#1e2126;
  --ink-soft:#565852;
  --teal:#1f6f63;
  --teal-deep:#134f46;
  --amber:#b98a45;
  --orange:#c97516;
  --pine:#17392f;
  --line:rgba(30,33,38,.16);
  --serif:'ZCOOL XiaoWei','Noto Serif SC',serif;
  --song:'Noto Serif SC',serif;
  --sans:'Noto Sans SC',sans-serif;
  --brush:'Ma Shan Zheng',cursive;
  --ease:cubic-bezier(.22,1,.36,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:92px}
body{
  font-family:var(--sans);
  background:var(--paper);
  color:var(--ink);
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
::selection{background:var(--teal);color:#fff}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.wrap{max-width:1280px;margin:0 auto;padding:0 clamp(20px,4vw,48px)}

/* 纸张噪点 */
.grain{
  position:fixed;inset:0;z-index:2000;pointer-events:none;opacity:.5;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3CfeColorMatrix type='matrix' values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.04 0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* 顶部阅读进度 */
.progress{position:fixed;top:0;left:0;height:3px;width:0;background:linear-gradient(90deg,var(--amber),var(--teal));z-index:1500;transition:width .1s linear}

/* ============ 导航 ============ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(243,241,234,.85);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .4s var(--ease);
}
.nav.scrolled{box-shadow:0 10px 40px -18px rgba(30,33,38,.28)}
.nav-inner{max-width:1280px;margin:0 auto;padding:0 clamp(20px,4vw,48px);height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;align-items:center;gap:12px;flex-shrink:0}
.logo-mark{
  width:46px;height:46px;background:#fff;border-radius:11px;overflow:hidden;
  display:grid;place-items:center;flex-shrink:0;
  box-shadow:0 4px 12px -4px rgba(30,33,38,.22),inset 0 0 0 1px rgba(30,33,38,.06);
}
.logo-mark img{width:82%;height:82%;object-fit:contain}
.logo-txt{line-height:1.15}
.logo-txt b{display:block;font-family:var(--serif);font-size:21px;letter-spacing:.14em;font-weight:400}
.logo-txt span{display:block;font-size:9.5px;letter-spacing:.3em;color:var(--ink-soft);text-transform:uppercase}
.nav-links{display:flex;gap:clamp(16px,2.6vw,38px)}
.nav-links a{position:relative;font-size:14.5px;letter-spacing:.12em;color:var(--ink-soft);padding:6px 0;transition:color .3s}
.nav-links a::after{content:'';position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--teal);transition:width .35s var(--ease)}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{width:100%}
.nav-cta{
  flex-shrink:0;background:var(--teal);color:#fff;font-size:13.5px;letter-spacing:.16em;
  padding:11px 22px;border-radius:99px;transition:background .3s,transform .3s var(--ease);
}
.nav-cta:hover{background:var(--teal-deep);transform:translateY(-2px)}
.lang-toggle{
  flex-shrink:0;font-size:12px;letter-spacing:.1em;color:var(--ink-soft);
  border:1px solid var(--line);border-radius:99px;padding:8px 16px;
  transition:.3s;font-weight:500;background:none;
}
.lang-toggle:hover{border-color:var(--teal);color:var(--teal)}
.burger{display:none;flex-direction:column;gap:5px;padding:8px}
.burger span{width:24px;height:2px;background:var(--ink);transition:.35s var(--ease)}
body.menu-open .burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.menu-open .burger span:nth-child(2){opacity:0}
body.menu-open .burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-nav{
  position:fixed;inset:76px 0 0 0;background:var(--paper);z-index:990;
  display:flex;flex-direction:column;gap:8px;padding:32px clamp(20px,4vw,48px);
  transform:translateX(100%);transition:transform .45s var(--ease);
}
body.menu-open .mobile-nav{transform:none}
.mobile-nav a{font-family:var(--serif);font-size:26px;padding:12px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}
.mobile-nav a i{font-style:normal;font-size:12px;color:var(--teal);letter-spacing:.2em}

/* ============ Hero ============ */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;
  padding:clamp(120px,15vh,170px) 0 clamp(56px,8vh,90px);
  overflow:hidden;
}
.hero-bg-char{
  position:absolute;right:-6vw;top:-8vh;font-family:var(--brush);
  font-size:clamp(20rem,42vw,40rem);line-height:1;color:rgba(30,33,38,.045);
  pointer-events:none;user-select:none;
}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);gap:clamp(36px,5vw,84px);align-items:center;position:relative}
.hero-kicker{
  display:inline-flex;align-items:center;gap:12px;font-size:13px;letter-spacing:.42em;
  color:var(--teal);margin-bottom:26px;
}
.hero-kicker::before{content:'';width:38px;height:1px;background:var(--teal)}
.hero h1{
  font-family:var(--serif);font-weight:400;
  font-size:clamp(2.5rem,5.6vw,4.4rem);line-height:1.22;letter-spacing:.04em;
  margin-bottom:26px;
}
.hero h1 .brush{
  font-family:var(--brush);color:var(--teal);position:relative;display:inline-block;
  padding:0 .06em;
}
.hero h1 .brush::after{
  content:'';position:absolute;left:0;right:0;bottom:.02em;height:.14em;
  background:rgba(185,138,69,.3);z-index:-1;border-radius:2px;
}
.hero-sub{max-width:520px;color:var(--ink-soft);font-size:15.5px;margin-bottom:36px}
.hero-btns{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:48px}
.btn{
  display:inline-flex;align-items:center;gap:10px;font-size:14.5px;letter-spacing:.14em;
  padding:15px 32px;border-radius:99px;transition:.35s var(--ease);
}
.btn-solid{background:var(--teal);color:#fff;box-shadow:0 12px 28px -12px rgba(31,111,99,.55)}
.btn-solid:hover{background:var(--teal-deep);transform:translateY(-3px)}
.btn-ghost{border:1px solid var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-3px)}
.btn .arr{transition:transform .35s var(--ease)}
.btn:hover .arr{transform:translateX(5px)}
.hero-stats{display:flex;flex-wrap:wrap;gap:clamp(26px,3.5vw,52px)}
.stat b{display:block;font-family:var(--song);font-weight:900;font-size:clamp(1.8rem,2.8vw,2.4rem);line-height:1.2}
.stat b i{font-style:normal;color:var(--amber);font-size:.6em;vertical-align:.08em}
.stat span{font-size:12.5px;color:var(--ink-soft);letter-spacing:.1em}

.hero-visual{position:relative;height:min(70vh,620px)}
.hero-visual .img-mask{
  width:100%;height:100%;overflow:hidden;border-radius:6px;position:relative;
  box-shadow:24px 28px 0 -6px var(--paper-2),0 40px 80px -30px rgba(30,33,38,.4);
}
.hero-visual img{width:100%;height:106%;object-fit:cover;will-change:transform}
.hero-visual::after{
  content:'';position:absolute;top:22px;left:-22px;right:22px;bottom:-22px;
  border:1px solid var(--amber);border-radius:6px;z-index:-1;
}
.seal{
  position:absolute;top:-26px;left:-30px;width:84px;height:84px;background:#fff;
  border-radius:14px;display:grid;place-items:center;overflow:hidden;
  box-shadow:0 14px 30px -10px rgba(30,33,38,.35),inset 0 0 0 1px rgba(30,33,38,.06);
  transform:rotate(4deg);z-index:2;
}
.seal img{width:76%;height:76%;object-fit:contain}
.hero-side{
  position:absolute;right:clamp(-64px,-4vw,-30px);top:50%;transform:translateY(-50%);
  writing-mode:vertical-rl;font-size:12px;letter-spacing:.6em;color:var(--ink-soft);opacity:.65;
}
.hero-side::before{content:'◆';color:var(--teal);margin-bottom:14px;display:block;text-align:center}
.scroll-hint{
  position:absolute;bottom:26px;left:50%;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;gap:8px;
  font-size:11px;letter-spacing:.4em;color:var(--ink-soft);
}
.scroll-hint::after{
  content:'';width:1px;height:44px;background:linear-gradient(var(--teal),transparent);
  animation:drip 2s var(--ease) infinite;
}
@keyframes drip{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ============ 走马灯 ============ */
.marquee{background:var(--ink);color:var(--amber);overflow:hidden;padding:15px 0;position:relative}
.marquee-track{display:flex;width:max-content;animation:mq 30s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee-track span{
  font-family:var(--serif);font-size:15px;letter-spacing:.3em;white-space:nowrap;padding:0 18px;
}
.marquee-track span i{font-style:normal;color:var(--orange);margin-right:34px}
@keyframes mq{to{transform:translateX(-50%)}}

/* ============ 章节通用 ============ */
section{position:relative}
.sec{padding:clamp(80px,11vh,130px) 0}
.sec-head{position:relative;margin-bottom:clamp(44px,6vh,72px)}
.ghost{
  position:absolute;top:-.55em;left:-.06em;font-family:var(--song);font-weight:900;
  font-size:clamp(5rem,10vw,8.5rem);line-height:1;color:transparent;
  -webkit-text-stroke:1px rgba(31,111,99,.24);z-index:0;pointer-events:none;user-select:none;
}
.kicker{
  position:relative;display:inline-flex;align-items:center;gap:12px;
  font-size:13px;letter-spacing:.4em;color:var(--teal);margin-bottom:18px;z-index:1;
}
.kicker::before{content:'';width:34px;height:1px;background:var(--teal)}
.sec-head h2{
  position:relative;font-family:var(--serif);font-weight:400;
  font-size:clamp(1.9rem,4vw,3rem);letter-spacing:.05em;line-height:1.3;z-index:1;
}
.sec-head h2 em{font-style:normal;color:var(--teal)}
.sec-head p{position:relative;color:var(--ink-soft);max-width:620px;margin-top:16px;z-index:1}

/* 偏移金框 */
.frame{position:relative}
.frame .img-mask{overflow:hidden;border-radius:6px;position:relative;z-index:1;height:100%}
.frame img{width:100%;height:100%;object-fit:cover;transition:transform .9s var(--ease)}
.frame:hover img{transform:scale(1.18)}
.frame::after{content:'';position:absolute;top:20px;left:-20px;right:20px;bottom:-20px;border:1px solid var(--amber);border-radius:6px}

/* 入场动画 */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .9s var(--ease),transform .9s var(--ease);transition-delay:var(--d,0s)}
.reveal.in{opacity:1;transform:none}

/* ============ 第一站：主营业务 ============ */
.services .service{
  display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);
  gap:clamp(32px,5vw,80px);align-items:center;
  padding:clamp(40px,6vh,64px) 0;border-top:1px solid var(--line);
}
.service:last-child{border-bottom:1px solid var(--line)}
.service.flip{grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr)}
.service.flip .s-img{order:2}
.service.flip .s-txt{order:1}
.s-num{
  font-family:var(--song);font-weight:900;font-size:clamp(3.4rem,6vw,5.4rem);line-height:1;
  color:transparent;-webkit-text-stroke:1.5px var(--teal);display:block;margin-bottom:14px;
}
.s-txt h3{font-family:var(--serif);font-weight:400;font-size:clamp(1.5rem,2.6vw,2.1rem);letter-spacing:.06em;margin-bottom:14px}
.s-txt h3 small{font-size:.5em;color:var(--amber);letter-spacing:.3em;margin-left:14px;vertical-align:middle}
.s-badge{
  display:inline-block;vertical-align:middle;font-style:normal;font-family:var(--sans);
  font-size:11px;letter-spacing:.2em;color:#fff;background:var(--teal);
  border-radius:99px;padding:4px 12px;margin-left:12px;transform:translateY(-4px);
}
.s-txt p{color:var(--ink-soft);font-size:15px;margin-bottom:22px;max-width:520px}
.s-tags{display:flex;flex-wrap:wrap;gap:10px}
.s-tags li{
  font-size:12.5px;letter-spacing:.14em;color:var(--ink-soft);
  border:1px solid var(--line);border-radius:99px;padding:7px 16px;
  transition:.3s;cursor:default;
}
.s-tags li:hover{border-color:var(--teal);color:var(--teal);transform:translateY(-2px)}
.s-img{height:clamp(280px,36vw,420px)}

/* ============ 第二站：研学（深松绿） ============ */
.study{background:var(--pine);color:var(--paper)}
.study .ghost{-webkit-text-stroke:1px rgba(243,241,234,.13)}
.study .kicker{color:var(--amber)}
.study .kicker::before{background:var(--amber)}
.study .sec-head h2 em{color:var(--amber)}
.study .sec-head p{color:rgba(243,241,234,.66)}
.study-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:clamp(36px,5vw,84px);align-items:start}
.course-title{font-family:var(--serif);font-weight:400;font-size:1.25rem;letter-spacing:.14em;margin:34px 0 18px;display:flex;align-items:center;gap:12px}
.course-title::before{content:'◆';color:var(--amber);font-size:.7em}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chips li{
  font-size:13px;letter-spacing:.14em;padding:9px 20px;border-radius:99px;
  border:1px solid rgba(243,241,234,.26);color:rgba(243,241,234,.85);transition:.3s;cursor:default;
}
.chips li:hover{background:var(--teal);border-color:var(--teal);transform:translateY(-2px)}
.safety{margin-top:38px;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.safety li:last-child{grid-column:1/-1}
.safety li{
  display:flex;gap:14px;align-items:flex-start;padding:18px 20px;
  background:rgba(243,241,234,.05);border:1px solid rgba(243,241,237,.12);border-radius:6px;
  transition:.35s var(--ease);
}
.safety li:hover{background:rgba(243,241,234,.1);transform:translateY(-3px)}
.safety b{display:block;font-size:14.5px;letter-spacing:.1em;margin-bottom:3px}
.safety b::before{content:'✓ ';color:var(--amber)}
.safety span{font-size:12.5px;color:rgba(243,241,234,.6);line-height:1.6}
.study-visual{position:relative}
.study-visual .img-mask{border-radius:6px;overflow:hidden;box-shadow:0 40px 80px -30px rgba(0,0,0,.55)}
.study-visual img{width:100%;height:clamp(320px,42vw,480px);object-fit:cover}
.repurch{
  position:absolute;right:-18px;bottom:-24px;background:var(--paper);color:var(--ink);
  padding:20px 26px;border-radius:6px;box-shadow:0 24px 50px -20px rgba(0,0,0,.5);
  display:flex;align-items:baseline;gap:10px;
}
.repurch b{font-family:var(--song);font-weight:900;font-size:2.2rem;color:var(--teal);line-height:1}
.repurch span{font-size:12px;color:var(--ink-soft);letter-spacing:.1em}
.schools{margin-top:clamp(56px,8vh,90px);border-top:1px solid rgba(243,241,234,.14);padding-top:34px}
.schools-label{font-size:12.5px;letter-spacing:.4em;color:var(--amber);margin-bottom:20px}
.schools-list{display:flex;flex-wrap:wrap;gap:10px 14px}
.schools-list li{
  font-family:var(--serif);font-size:14.5px;letter-spacing:.12em;color:rgba(243,241,234,.75);
  padding:8px 18px;border:1px solid rgba(243,241,234,.16);border-radius:4px;transition:.3s;cursor:default;
}
.schools-list li:hover{color:var(--paper);border-color:var(--amber);background:rgba(185,138,69,.14)}

/* ============ 第三站：精选线路 ============ */
.filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:40px}
.filters button{
  font-size:13.5px;letter-spacing:.16em;padding:10px 24px;border-radius:99px;
  border:1px solid var(--line);color:var(--ink-soft);transition:.3s;
}
.filters button:hover{border-color:var(--teal);color:var(--teal)}
.filters button.active{background:var(--teal);border-color:var(--teal);color:#fff}
.routes-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,2.5vw,32px)}
.route-card{
  background:var(--card);border:1px solid var(--line);border-radius:6px;overflow:hidden;
  transition:transform .45s var(--ease),box-shadow .45s var(--ease),opacity .4s;
  animation:cardIn .5s var(--ease) both;
}
@keyframes cardIn{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
.route-card:hover{transform:translateY(-8px);box-shadow:0 30px 60px -24px rgba(30,33,38,.35)}
.route-card.hide{display:none}
.rc-img{aspect-ratio:4/3;overflow:hidden;position:relative}
.rc-img img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.route-card:hover .rc-img img{transform:scale(1.18)}
.rc-tag{
  position:absolute;top:14px;left:14px;background:rgba(30,33,38,.85);color:var(--paper);
  font-size:11.5px;letter-spacing:.2em;padding:6px 14px;border-radius:3px;backdrop-filter:blur(4px);
}
.rc-body{padding:24px 24px 22px}
.rc-body h3{font-family:var(--serif);font-weight:400;font-size:1.22rem;letter-spacing:.05em;margin-bottom:8px}
.rc-body p{font-size:13px;color:var(--ink-soft);line-height:1.7;min-height:44px}
.rc-meta{
  display:flex;justify-content:space-between;align-items:center;
  border-top:1px dashed var(--line);margin-top:16px;padding-top:15px;
}
.rc-meta .info{font-size:12px;color:var(--ink-soft);letter-spacing:.08em}
.rc-meta .price{font-family:var(--song);font-weight:900;font-size:1.15rem;color:var(--orange)}
.rc-meta .price i{font-style:normal;font-size:.62em;font-weight:400;margin-right:2px}
.rc-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:14px;
  font-size:12.5px;letter-spacing:.2em;color:var(--teal);
}
.rc-link .arr{transition:transform .3s var(--ease)}
.route-card:hover .rc-link .arr{transform:translateX(6px)}

/* ============ 第四站：非遗体验 ============ */
.heritage{background:var(--paper-2)}
.heritage-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(18px,2vw,28px);margin-top:clamp(36px,4vw,56px)}
.heritage-item{
  background:var(--card);border:1px solid var(--line);border-radius:6px;overflow:hidden;
  transition:transform .45s var(--ease),box-shadow .45s var(--ease);
}
.heritage-item:hover{transform:translateY(-6px);box-shadow:0 24px 50px -20px rgba(30,33,38,.28)}
.h-img{aspect-ratio:4/3;overflow:hidden}
.h-img img{width:100%;height:100%;object-fit:cover;transition:transform .7s var(--ease)}
.heritage-item:hover .h-img img{transform:scale(1.12)}
.h-body{padding:18px 18px 20px;text-align:center}
.h-body h4{font-family:var(--serif);font-weight:400;font-size:1.15rem;letter-spacing:.1em;margin-bottom:6px}
.h-body h4 small{display:block;font-size:.55em;color:var(--amber);letter-spacing:.28em;margin-top:4px}
.h-body p{font-size:12.5px;color:var(--ink-soft);line-height:1.6}

/* ============ 第五站：定制旅行 ============ */
.custom{background:var(--paper-2)}
.custom-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(36px,5vw,84px);align-items:center}
.custom-visual{position:relative;height:clamp(420px,48vw,560px)}
.custom-visual .img-mask{width:100%;height:100%;overflow:hidden;border-radius:6px;position:relative;z-index:1;box-shadow:20px 24px 0 -6px var(--paper),0 40px 80px -30px rgba(30,33,38,.35)}
.custom-visual img{width:100%;height:100%;object-fit:cover}
.custom-visual .float-note{
  position:absolute;left:-26px;bottom:38px;background:var(--ink);color:var(--paper);
  padding:18px 24px;border-radius:6px;z-index:2;box-shadow:0 24px 50px -18px rgba(0,0,0,.5);
}
.float-note b{display:block;font-family:var(--song);font-weight:900;font-size:1.5rem;color:var(--amber);line-height:1.2}
.float-note span{font-size:11.5px;letter-spacing:.14em;color:rgba(243,241,234,.7)}
.steps{position:relative;padding-left:6px}
.steps::before{
  content:'';position:absolute;left:25px;top:16px;bottom:16px;
  border-left:1px dashed rgba(31,111,99,.5);
}
.step{display:flex;gap:24px;align-items:flex-start;padding:0 0 34px;position:relative}
.step:last-child{padding-bottom:0}
.step-n{
  flex-shrink:0;width:52px;height:52px;border-radius:50%;background:var(--paper);
  border:1px solid var(--teal);color:var(--teal);display:grid;place-items:center;
  font-family:var(--song);font-weight:900;font-size:1.2rem;position:relative;z-index:1;
  box-shadow:0 0 0 6px var(--paper-2);transition:.35s var(--ease);
}
.step:hover .step-n{background:var(--teal);color:#fff;transform:scale(1.08)}
.step h4{font-family:var(--serif);font-weight:400;font-size:1.2rem;letter-spacing:.08em;margin:8px 0 6px}
.step h4 small{font-size:.6em;color:var(--amber);letter-spacing:.24em;margin-left:12px}
.step p{font-size:14px;color:var(--ink-soft);max-width:440px}

/* ============ 客户评价 ============ */
.quotes-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,2.5vw,32px)}
.quote{
  background:var(--card);border:1px solid var(--line);border-radius:6px;padding:34px 30px 30px;
  position:relative;transition:.4s var(--ease);
}
.quote:hover{transform:translateY(-6px);box-shadow:0 26px 50px -22px rgba(30,33,38,.28)}
.quote::before{
  content:'"';position:absolute;top:6px;right:22px;font-family:var(--song);font-weight:900;
  font-size:4.6rem;line-height:1;color:rgba(185,138,69,.35);
}
.quote p{font-size:14.5px;line-height:1.9;color:var(--ink);margin-bottom:20px}
.quote footer{font-size:12.5px;color:var(--ink-soft);letter-spacing:.1em;border-top:1px dashed var(--line);padding-top:14px}
.quote footer b{color:var(--teal);font-weight:500}

/* ============ 第五站：关于惠途 ============ */
.about{background:var(--ink);color:var(--paper)}
.about .ghost{-webkit-text-stroke:1px rgba(243,241,234,.12)}
.about .kicker{color:var(--amber)}
.about .kicker::before{background:var(--amber)}
.about .sec-head h2 em{color:var(--amber)}
.about-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:clamp(36px,5vw,80px);align-items:center;margin-bottom:clamp(48px,7vh,80px)}
.about-grid p{color:rgba(243,241,234,.7);font-size:15px;margin-bottom:20px}
.values{margin-top:30px;display:grid;gap:14px}
.values li{display:flex;gap:16px;align-items:baseline;border-bottom:1px solid rgba(243,241,234,.12);padding-bottom:14px}
.values b{font-family:var(--serif);font-weight:400;font-size:1.15rem;letter-spacing:.2em;color:var(--amber);white-space:nowrap}
.values span{font-size:13.5px;color:rgba(243,241,234,.6)}
.about-visual .img-mask{border-radius:6px;overflow:hidden;box-shadow:0 40px 90px -30px rgba(0,0,0,.6)}
.about-visual img{width:100%;height:clamp(300px,36vw,430px);object-fit:cover}
.counters{
  display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(20px,3vw,48px);
  border-top:1px solid rgba(243,241,234,.14);padding-top:clamp(36px,5vh,56px);
}
.counter b{display:block;font-family:var(--song);font-weight:900;font-size:clamp(2.4rem,4.5vw,3.4rem);line-height:1.15;color:var(--amber)}
.counter b i{font-style:normal;font-size:.6em;color:var(--amber);vertical-align:.08em}
.counter>span{font-size:12.5px;letter-spacing:.2em;color:rgba(243,241,234,.55)}

/* ============ 终点站：CTA ============ */
.cta{
  background:linear-gradient(135deg,#12463f,var(--teal-deep) 55%,var(--teal));
  color:#f4f2ea;text-align:center;overflow:hidden;position:relative;
}
.cta-bg-char{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-52%);
  font-family:var(--brush);font-size:clamp(18rem,34vw,30rem);line-height:1;
  color:rgba(255,255,255,.06);pointer-events:none;user-select:none;
}
.cta .wrap{position:relative;z-index:1}
.cta h2{
  font-family:var(--brush);font-weight:400;font-size:clamp(2.6rem,6.5vw,4.6rem);
  letter-spacing:.1em;margin-bottom:18px;
}
.cta .sub{font-size:15px;letter-spacing:.24em;color:rgba(244,242,234,.85);margin-bottom:42px}
.cta-btns{display:flex;justify-content:center;flex-wrap:wrap;gap:16px}
.cta .btn-solid{background:var(--ink);box-shadow:0 14px 32px -12px rgba(0,0,0,.5)}
.cta .btn-solid:hover{background:#000}
.cta .btn-ghost{border-color:rgba(244,242,234,.6);color:#f4f2ea}
.cta .btn-ghost:hover{background:rgba(244,242,234,.14)}
.cta .seal-inline{
  display:inline-grid;place-items:center;width:64px;height:64px;background:#fff;
  border-radius:12px;overflow:hidden;margin-bottom:26px;
  box-shadow:0 10px 26px -10px rgba(0,0,0,.4);transform:rotate(-4deg);
}
.cta .seal-inline img{width:76%;height:76%;object-fit:contain}

/* ============ 页脚 ============ */
footer.site{background:#17191d;color:rgba(243,241,234,.65);padding:clamp(56px,8vh,84px) 0 0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:clamp(28px,4vw,56px);padding-bottom:clamp(40px,6vh,64px)}
.foot-brand p{font-size:13.5px;margin-top:16px;max-width:300px;line-height:1.9}
footer.site h5{font-family:var(--serif);font-weight:400;font-size:15px;letter-spacing:.3em;color:var(--paper);margin-bottom:20px}
footer.site h5::after{content:'';display:block;width:26px;height:2px;background:var(--amber);margin-top:10px}
.foot-links li{margin-bottom:12px}
.foot-links a{font-size:13.5px;transition:.3s;display:inline-flex;align-items:center;gap:8px}
.foot-links a::before{content:'·';color:var(--amber);font-weight:700}
.foot-links a:hover{color:var(--paper);transform:translateX(4px)}
.foot-contact li{font-size:13.5px;margin-bottom:14px;display:flex;gap:12px;line-height:1.7}
.foot-contact b{color:var(--amber);font-weight:400;white-space:nowrap}
.foot-bar{
  border-top:1px solid rgba(243,241,234,.1);padding:22px 0;
  display:flex;justify-content:center;flex-wrap:wrap;gap:10px;
  font-size:12px;letter-spacing:.08em;color:rgba(243,241,234,.4);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:52px}
  .hero-visual{height:min(52vh,460px)}
  .hero-side{display:none}
  .study-grid,.custom-grid,.about-grid{grid-template-columns:1fr;gap:56px}
  .routes-grid,.quotes-grid,.heritage-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .counters{grid-template-columns:repeat(2,1fr);row-gap:36px}
  .services .service,.services .service.flip{grid-template-columns:1fr;gap:28px;padding:40px 0}
  .service.flip .s-img{order:0}
  .s-img{height:min(40vw,280px)}
  .services .service,.services .service.flip{gap:36px;padding:44px 0}
  .repurch{position:static;margin-top:14px}
  .float-note{position:static;margin-top:14px;display:inline-block}
  .custom-visual{height:auto;min-height:280px}
}
@media (max-width:640px){
  .nav-links,.nav-cta,.lang-toggle{display:none}
  .burger{display:flex}
  .hero{padding-top:110px}
  .hero-bg-char{display:none}
  .hero-stats{gap:22px}
  .routes-grid,.quotes-grid,.heritage-grid{grid-template-columns:1fr}
  .safety{grid-template-columns:1fr}
  .seal{width:68px;height:68px;top:-18px;left:-12px}
  .hero-visual::after{display:none}
  .repurch{position:static;margin-top:14px;padding:14px 18px;box-shadow:0 12px 30px -14px rgba(0,0,0,.4)}
  .services .service,.services .service.flip{gap:40px;padding:60px 0;border-top:2px solid rgba(30,33,38,.28)}
  .s-img{height:min(58vw,340px)}
  .frame::after{display:none}
  .custom-visual{height:auto;min-height:200px;margin-bottom:32px}
  .custom-visual .img-mask{box-shadow:none}
  .float-note{position:static;margin-top:20px;display:inline-block}
  .foot-grid{grid-template-columns:1fr}
  .scroll-hint{display:none}
}
/* 图片填满容器（水印已通过本地化处理移除，无需再裁剪） */
.img-mask img,.rc-img img{object-fit:cover;object-position:center}
.hero-visual img{will-change:transform}

/* 微信复制链接 */
.wx-copy{color:var(--amber);text-decoration:underline;text-underline-offset:3px;cursor:pointer;transition:color .3s}
.wx-copy:hover{color:var(--orange)}
/* 电子邮箱链接 */
.foot-email{color:inherit;text-decoration:none;border-bottom:1px solid rgba(243,241,234,.3);transition:.3s}
.foot-email:hover{color:var(--paper);border-bottom-color:var(--amber)}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}