/* ========================================
   SANYOU-TRANS · 三友捷运
   home.css — 首页专属样式（Homepage Only）
   Loads after common.css; relies on its
   variables, reset, buttons, nav & footer.
   ======================================== */

/* ====== NAV MENU ADJUSTMENT ====== */
/* Homepage carries 8 menu links; compact but readable */
.nav-inner{padding:0 12px}
.nav-logo{gap:8px}
.logo-mark{width:40px;height:40px;border-radius:8px;font-size:17px}
.logo-text .lt-main{font-size:16px}
.logo-text .lt-sub{font-size:12px}
.nav-menu{gap:12px;flex-wrap:nowrap;white-space:nowrap}
.nav-menu a{font-size:15px}
.nav-right{gap:8px}
.lang-toggle button{padding:5px 10px;font-size:13px}
.nav-cta,.nav-portal{padding:7px 14px!important;font-size:13px!important}

/* ====== HERO ====== */
.hero{
  min-height:100vh;display:flex;align-items:center;
  padding-top:var(--nav-h);position:relative;overflow:hidden;
}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:0.78}
.hero-bg::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(6,11,20,0.7) 0%,rgba(6,11,20,0.58) 35%,rgba(6,11,20,0.38) 65%,rgba(6,11,20,0.28) 100%),
             linear-gradient(0deg,rgba(6,11,20,0.82) 0%,rgba(6,11,20,0.1) 40%,rgba(6,11,20,0.15) 100%);
}
.hero-content{position:relative;z-index:1;width:100%;padding:60px 0}
.hero-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:48px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:8px 18px;border-radius:50px;
  background:rgba(245,158,11,0.12);border:1px solid rgba(245,158,11,0.3);
  font-size:13px;font-weight:600;color:var(--accent);letter-spacing:0.05em;
  margin-bottom:28px;
}
.hero-badge::before{content:'';width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent)}
.hero-title{
  font-size:clamp(36px,5.5vw,64px);font-weight:900;line-height:1.1;
  letter-spacing:-0.03em;margin-bottom:20px;
}
.hero-title .highlight{color:var(--accent);display:block}
.hero-subtitle{font-size:20px;font-weight:500;color:var(--muted-light);margin-bottom:20px}
.hero-desc{font-size:16px;color:var(--muted);max-width:520px;margin-bottom:36px;line-height:1.8}
.hero-ctas{display:flex;gap:16px;flex-wrap:wrap}
/* Hero cards — 2×2 glass-morphism grid */
.hero-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.hero-card{
  background:var(--glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border:1px solid var(--glass-border);border-radius:var(--radius);
  padding:24px 20px;transition:all .3s;
}
.hero-card:hover{background:var(--surface-hover);transform:translateY(-4px);border-color:rgba(245,158,11,0.3)}
.hero-card-icon{
  width:44px;height:44px;border-radius:12px;
  background:var(--accent-dim);display:flex;align-items:center;justify-content:center;
  margin-bottom:14px;
}
.hero-card-icon svg{width:24px;height:24px;stroke:var(--accent);fill:none;stroke-width:2}
.hero-card-title{font-size:15px;font-weight:700;margin-bottom:4px}
.hero-card-desc{font-size:12px;color:var(--muted);line-height:1.4}

/* ====== SCROLL INDICATOR ====== */
.scroll-indicator{
  position:absolute;bottom:32px;left:50%;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;gap:8px;z-index:1;
}
.scroll-indicator span{font-size:11px;color:var(--muted);letter-spacing:0.1em;text-transform:uppercase}
.scroll-mouse{width:24px;height:38px;border:2px solid var(--muted);border-radius:12px;position:relative}
.scroll-mouse::after{content:'';position:absolute;top:6px;left:50%;transform:translateX(-50%);width:4px;height:8px;border-radius:2px;background:var(--accent);animation:scrollAnim 1.5s infinite}
@keyframes scrollAnim{0%{opacity:1;transform:translate(-50%,0)}100%{opacity:0;transform:translate(-50%,12px)}}

/* ====== ABOUT PREVIEW ====== */
#about{background:var(--bg2)}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.about-text p{font-size:16px;color:var(--muted-light);line-height:1.9;margin-bottom:20px}
.about-text p strong{color:var(--ink);font-weight:600}
.about-image{position:relative;border-radius:var(--radius-lg);overflow:hidden}
.about-image img{width:100%;height:420px;object-fit:cover}
.about-image::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,transparent 50%,rgba(6,11,20,0.4));pointer-events:none}
.about-image-badge{
  position:absolute;bottom:24px;left:24px;right:24px;
  background:rgba(6,11,20,0.85);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border:1px solid var(--glass-border);border-radius:var(--radius);
  padding:20px 24px;display:flex;align-items:center;gap:16px;z-index:1;
}
.about-image-badge .aib-icon{
  width:48px;height:48px;border-radius:12px;flex-shrink:0;
  background:var(--accent2-dim);display:flex;align-items:center;justify-content:center;
}
.about-image-badge .aib-icon svg{width:26px;height:26px;stroke:var(--accent2);fill:none;stroke-width:2}
.about-image-badge .aib-text{font-size:14px}
.about-image-badge .aib-text strong{display:block;font-size:16px;margin-bottom:2px}
.about-image-badge .aib-text span{color:var(--muted)}
/* Stat cards */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:64px}
.stat-card{text-align:center;padding:32px 16px;background:var(--surface);border-radius:var(--radius);border:1px solid var(--rule);transition:all .3s}
.stat-card:hover{background:var(--surface-hover);border-color:rgba(245,158,11,0.2);transform:translateY(-4px)}
.stat-number{font-size:clamp(32px,4vw,48px);font-weight:900;color:var(--accent);line-height:1;margin-bottom:8px;font-family:'Inter',sans-serif}
.stat-suffix{font-size:20px;font-weight:700;color:var(--accent)}
.stat-label{font-size:14px;color:var(--muted);font-weight:500}

/* ====== PARTNERS STRIP ====== */
/* Also defined in common.css; included here for homepage completeness */
.partners{padding:48px 0;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);background:var(--bg)}
.partners-label{text-align:center;font-size:13px;color:var(--muted);letter-spacing:0.1em;text-transform:uppercase;margin-bottom:24px}
.partners-row{display:flex;flex-wrap:wrap;justify-content:center;gap:16px}
.partner-badge{
  padding:8px 20px;border:1px solid var(--rule);border-radius:50px;
  font-size:14px;font-weight:700;color:var(--muted-light);letter-spacing:0.05em;
  transition:all .3s;
}
.partner-badge:hover{border-color:var(--accent);color:var(--accent)}

/* ====== SERVICES GRID ====== */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.service-card{
  background:var(--surface);border:1px solid var(--rule);border-radius:var(--radius-lg);
  padding:36px 32px;transition:all .4s;position:relative;overflow:hidden;
}
/* Top gradient line on hover */
.service-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent),transparent);transform:scaleX(0);transform-origin:left;transition:transform .4s}
.service-card:hover{background:var(--surface-hover);border-color:rgba(245,158,11,0.2);transform:translateY(-6px)}
.service-card:hover::before{transform:scaleX(1)}
.service-icon{
  width:56px;height:56px;border-radius:14px;
  background:var(--accent-dim);display:flex;align-items:center;justify-content:center;
  margin-bottom:24px;transition:all .3s;
}
.service-card:hover .service-icon{background:var(--accent)}
.service-icon svg{width:28px;height:28px;stroke:var(--accent);fill:none;stroke-width:1.8;transition:stroke .3s}
.service-card:hover .service-icon svg{stroke:#0B1424}
.service-card h3{font-size:20px;font-weight:700;margin-bottom:6px}
.service-card .service-en{font-size:13px;color:var(--accent);font-weight:500;margin-bottom:16px;display:block}
.service-card p{font-size:14px;color:var(--muted);line-height:1.7;margin-bottom:16px}
.service-tags{display:flex;flex-wrap:wrap;gap:8px}

/* ====== SOLUTIONS GRID ====== */
#solutions{background:var(--bg2)}
.solutions-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.solution-card{
  background:var(--surface);border:1px solid var(--rule);border-radius:var(--radius-lg);
  padding:40px;transition:all .4s;display:flex;gap:24px;align-items:flex-start;
}
.solution-card:hover{background:var(--surface-hover);border-color:rgba(59,130,246,0.25);transform:translateY(-4px)}
.solution-icon{
  width:52px;height:52px;border-radius:12px;flex-shrink:0;
  background:var(--accent2-dim);display:flex;align-items:center;justify-content:center;
}
.solution-icon svg{width:26px;height:26px;stroke:var(--accent2);fill:none;stroke-width:1.8}
.solution-card h3{font-size:19px;font-weight:700;margin-bottom:4px}
.solution-card .sol-en{font-size:13px;color:var(--accent2);font-weight:500;margin-bottom:14px;display:block}
.solution-card p{font-size:14px;color:var(--muted);line-height:1.7}
.solution-features{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px}

/* ====== SERVICE HUB ====== */
#hub{
  background:var(--bg);
  position:relative;
}
/* Ambient radial glows behind hub section */
#hub::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(circle at 20% 50%,rgba(245,158,11,0.04),transparent 50%),
             radial-gradient(circle at 80% 50%,rgba(59,130,246,0.04),transparent 50%);
  pointer-events:none;
}
.hub-intro{text-align:center;max-width:680px;margin:0 auto 56px}
.hub-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;position:relative}
.hub-card{
  background:var(--glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border:1px solid var(--glass-border);border-radius:var(--radius-lg);
  padding:36px 32px;transition:all .4s;cursor:pointer;position:relative;overflow:hidden;
  display:flex;flex-direction:column;
}
/* Radial glow on hover */
.hub-card::after{
  content:'';position:absolute;top:0;right:0;width:120px;height:120px;
  background:radial-gradient(circle,var(--accent-dim),transparent 70%);
  opacity:0;transition:opacity .4s;
}
.hub-card:hover{border-color:rgba(245,158,11,0.3);transform:translateY(-6px);background:rgba(255,255,255,0.08)}
.hub-card:hover::after{opacity:1}
.hub-card-icon{
  width:52px;height:52px;border-radius:14px;
  background:linear-gradient(135deg,var(--accent),#D97706);
  display:flex;align-items:center;justify-content:center;margin-bottom:20px;
}
.hub-card-icon svg{width:26px;height:26px;stroke:#0B1424;fill:none;stroke-width:2}
.hub-card h3{font-size:18px;font-weight:700;margin-bottom:4px}
.hub-card .hub-en{font-size:12px;color:var(--accent);font-weight:600;letter-spacing:0.05em;margin-bottom:14px;display:block}
.hub-card p{font-size:14px;color:var(--muted);line-height:1.6;flex-grow:1}
.hub-card .hub-enter{margin-top:20px;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent);transition:gap .3s}
.hub-card:hover .hub-enter{gap:12px}

/* ====== CASES PREVIEW ====== */
#cases{background:var(--bg2)}
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.case-card{
  display:block;color:inherit;text-decoration:none;
  border-radius:var(--radius-lg);overflow:hidden;position:relative;
  height:280px;cursor:pointer;transition:all .4s;
}
.case-bg{position:absolute;inset:0;transition:transform .4s;overflow:hidden;background:var(--surface)}
.case-bg img{width:100%;height:100%;object-fit:cover;object-position:center}
/* Hover zoom effect on background image */
.case-card:hover .case-bg img{transform:scale(1.08)}
/* Gradient overlay */
.case-overlay{
  position:absolute;inset:0;
  background:linear-gradient(0deg,rgba(6,11,20,0.95) 0%,rgba(6,11,20,0.4) 60%,transparent 100%);
}
.case-content{position:absolute;bottom:0;left:0;right:0;padding:28px 24px}
.case-icon{width:40px;height:40px;border-radius:10px;background:rgba(255,255,255,0.1);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.case-icon svg{width:22px;height:22px;stroke:var(--accent);fill:none;stroke-width:2}
.case-card h3{font-size:17px;font-weight:700;margin-bottom:4px}
.case-card .case-en{font-size:12px;color:var(--accent);font-weight:500;display:block;margin-bottom:8px}
.case-card p{font-size:13px;color:var(--muted);line-height:1.5}
.case-tag{
  position:absolute;top:20px;left:20px;
  padding:4px 12px;border-radius:50px;
  background:rgba(6,11,20,0.7);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  font-size:11px;font-weight:600;color:var(--accent);letter-spacing:0.05em;
}

/* ====== RESPONSIVE ====== */
@media(max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-cards{max-width:500px}
  .about-grid{grid-template-columns:1fr;gap:40px}
  .about-image img{height:320px}
  .services-grid{grid-template-columns:repeat(2,1fr)}
  .solutions-grid{grid-template-columns:1fr}
  .hub-grid{grid-template-columns:repeat(2,1fr)}
  .cases-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:768px){
  .hero-cards{grid-template-columns:1fr 1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .services-grid{grid-template-columns:1fr}
  .hub-grid{grid-template-columns:1fr}
  .cases-grid{grid-template-columns:1fr}
  .hero-title{font-size:36px}
  .section-title{font-size:28px}
  .solution-card{padding:28px;gap:16px}
  .service-card{padding:28px 24px}
}
@media(max-width:480px){
  .hero-cards{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr}
  .hero-ctas{flex-direction:column}
  .hero-ctas .btn{width:100%;justify-content:center}
  .hero-desc{font-size:14px}
  .hero-subtitle{font-size:17px}
}

/* ====== HERO BANNER CAROUSEL ======
   背景轮播与 Banner 文案完全解耦：
   后台无论 1 张还是多张图片，都不会再改变 hero-content 的文档流与垂直居中。 */
.hero{overflow:hidden;position:relative}
.hero-bg-stage{position:absolute;inset:0;z-index:0;overflow:hidden;background:var(--bg)}
.hero-bg-slide{
  position:absolute;inset:0;
  opacity:0;visibility:hidden;
  transition:opacity .7s ease,visibility .7s ease;
}
/* JS 初始化前先显示第一张，避免首屏闪空；初始化完成后只允许 active 显示。 */
.hero-bg-slide:first-child{opacity:1;visibility:visible;z-index:1}
.hero.carousel-ready .hero-bg-slide{opacity:0;visibility:hidden;z-index:0}
.hero.carousel-ready .hero-bg-slide.active{opacity:1;visibility:visible;z-index:1}
.hero-bg-slide img{
  display:block;width:100%;height:100%;
  object-fit:cover;object-position:center center;
  opacity:.78;
}
.hero-bg-stage::after{
  content:'';position:absolute;inset:0;z-index:2;pointer-events:none;
  background:linear-gradient(90deg,rgba(6,11,20,.70) 0%,rgba(6,11,20,.58) 35%,rgba(6,11,20,.38) 65%,rgba(6,11,20,.28) 100%),
             linear-gradient(0deg,rgba(6,11,20,.82) 0%,rgba(6,11,20,.10) 40%,rgba(6,11,20,.15) 100%);
}
.hero-content{position:relative;z-index:3;width:100%}
.scroll-indicator{z-index:4}
.hero-banner-nav{
  display:none;position:absolute;top:50%;z-index:6;
  width:38px;height:38px;margin-top:-19px;padding:0;
  align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.26);border-radius:50%;
  background:rgba(6,11,20,.46);color:#fff;cursor:pointer;
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
  -webkit-appearance:none;appearance:none;
}
.hero.has-multiple-banners .hero-banner-nav{display:flex}
.hero-banner-prev{left:22px}
.hero-banner-next{right:22px}
.hero-banner-nav svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.hero-banner-nav:hover{background:rgba(245,158,11,.90);border-color:rgba(245,158,11,1);transform:scale(1.06)}
.hero-banner-nav:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
@media(max-width:768px){
  /* 手机端不显示左右切换箭头，仅保留自动轮播。 */
  .hero.has-multiple-banners .hero-banner-nav,
  .hero-banner-nav{display:none!important}
}
.hero-card-icon svg,.hero-card-icon img{shape-rendering:geometricPrecision;text-rendering:geometricPrecision;-webkit-font-smoothing:antialiased}

/* 矮屏桌面端避免文案被导航和底部滚动提示挤压。 */
@media (min-width:769px) and (max-height:720px){
  .hero-content{padding:28px 0}
  .hero-badge{margin-bottom:18px}
  .hero-title{font-size:clamp(34px,4.4vw,52px);margin-bottom:14px}
  .hero-subtitle{margin-bottom:14px}
  .hero-desc{margin-bottom:24px;line-height:1.65}
  .scroll-indicator{bottom:16px}
}