/* ==========================================================================
   原创模板样式 (仿现代落地页风格) —— 手写, 无第三方框架
   ========================================================================== */
:root {
    --primary: #33b6ff;
    --primary-dark: #0a1d43;
    --primary-deep: #03163b;
    --accent: #fb9902;
    --teal: #3dcab1;
    --light: #eaf8ff;
    --text: #757f95;
    --heading: #0a1d43;
    --white: #ffffff;
    --border: rgba(10, 29, 67, .10);
    --radius: 16px;
    --shadow: 0 10px 40px rgba(10, 29, 67, .08);
    --shadow-lg: 0 24px 60px rgba(10, 29, 67, .14);
    --font: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    --transition: all .3s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font); color: var(--text); background: var(--white); line-height: 1.75; font-size: 16px; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
ul { list-style: none; }
h1, h2, h3, h4 { color: var(--heading); line-height: 1.25; font-weight: 700; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 30px; border-radius: 50px; font-weight: 600; font-size: 15px; border: 2px solid transparent; cursor: pointer; transition: var(--transition); white-space: nowrap; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 10px 24px rgba(51, 182, 255, .35); }
.btn-primary:hover { background: #1aa2ee; color: #fff; transform: translateY(-2px); }
.btn-outline { background: transparent; border-color: rgba(255, 255, 255, .5); color: #fff; }
.btn-outline:hover { background: #fff; color: var(--primary-dark); border-color: #fff; }
.btn-dark { background: var(--primary-dark); color: #fff; }
.btn-dark:hover { background: var(--primary-deep); color: #fff; transform: translateY(-2px); }

/* header */
.header { position: sticky; top: 0; z-index: 100; background: rgba(255, 255, 255, .92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 20px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: var(--heading); }
.logo .dot { width: 12px; height: 12px; border-radius: 4px; background: linear-gradient(135deg, var(--primary), var(--teal)); }
.nav ul { display: flex; gap: 30px; }
.nav a { color: var(--heading); font-size: 15px; font-weight: 500; position: relative; padding: 6px 0; }
.nav a::after { content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 2px; background: var(--primary); transition: var(--transition); }
.nav a:hover::after, .nav a.active::after { width: 100%; }
.header-cta { display: flex; align-items: center; gap: 14px; }
.header-phone { font-weight: 700; color: var(--heading); font-size: 15px; }
.menu-toggle { display: none; background: none; border: 0; font-size: 26px; cursor: pointer; color: var(--heading); }

/* hero */
.hero { position: relative; overflow: hidden; background: radial-gradient(1200px 600px at 80% -10%, #12467e 0%, transparent 60%), linear-gradient(160deg, var(--primary-deep), var(--primary-dark)); color: #fff; padding: 110px 0 90px; }
.hero::before { content: ""; position: absolute; inset: 0; background-image: radial-gradient(rgba(255,255,255,.06) 1px, transparent 1px); background-size: 22px 22px; opacity: .6; }
.hero .container { position: relative; z-index: 2; max-width: 900px; text-align: center; }
.hero-tag { display: inline-block; padding: 6px 16px; border-radius: 50px; background: rgba(51, 182, 255, .15); color: #8fd6ff; font-size: 13px; font-weight: 600; letter-spacing: .5px; margin-bottom: 20px; border: 1px solid rgba(51,182,255,.3); }
.hero h1 { font-size: 44px; color: #fff; margin-bottom: 18px; letter-spacing: .5px; }
.hero-desc { font-size: 17px; color: rgba(255,255,255,.8); max-width: 680px; margin: 0 auto 34px; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 64px; }
.hero-stats .stat { text-align: center; padding: 18px 8px; border-radius: 14px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1); }
.hero-stats .num { font-size: 32px; font-weight: 800; color: #fff; }
.hero-stats .num span { color: var(--primary); }
.hero-stats .label { font-size: 13px; color: rgba(255,255,255,.7); margin-top: 4px; }

/* section */
.section { padding: 90px 0; }
.section.alt { background: var(--light); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-head .kicker { display: inline-block; color: var(--primary); font-weight: 700; font-size: 13px; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 12px; }
.section-head h2 { font-size: 34px; }
.section-head p { margin-top: 14px; }

/* grid */
.grid { display: grid; gap: 26px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* feature card */
.card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 26px; transition: var(--transition); }
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.card .icon { width: 58px; height: 58px; border-radius: 16px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--light), #fff); border: 1px solid var(--border); margin-bottom: 20px; }
.card .icon svg { width: 28px; height: 28px; stroke: var(--primary); }
.card h3 { font-size: 19px; margin-bottom: 10px; }
.card p { font-size: 15px; }
.card .more { display: inline-block; margin-top: 14px; font-weight: 600; font-size: 14px; }

/* service item */
.service-item { position: relative; overflow: hidden; background: #fff; border-radius: var(--radius); border: 1px solid var(--border); padding: 34px 28px; transition: var(--transition); }
.service-item::after { content: ""; position: absolute; left: 0; top: 0; height: 4px; width: 0; background: linear-gradient(90deg, var(--primary), var(--teal)); transition: var(--transition); }
.service-item:hover::after { width: 100%; }
.service-item:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.service-item .idx { font-size: 30px; font-weight: 800; color: rgba(51,182,255,.18); }
.service-item h3 { font-size: 20px; margin: 8px 0 10px; }

/* case */
.case-card { border-radius: var(--radius); overflow: hidden; background: #fff; border: 1px solid var(--border); transition: var(--transition); }
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.case-thumb { height: 180px; background: linear-gradient(135deg, #12467e, #33b6ff); position: relative; }
.case-thumb.t2 { background: linear-gradient(135deg, #0a1d43, #3dcab1); }
.case-thumb.t3 { background: linear-gradient(135deg, #fb9902, #f76464); }
.case-thumb.t4 { background: linear-gradient(135deg, #3dcab1, #0a1d43); }
.case-thumb.t5 { background: linear-gradient(135deg, #33b6ff, #6a1b9a); }
.case-thumb.t6 { background: linear-gradient(135deg, #0a1d43, #33b6ff); }
.case-body { padding: 22px 22px 26px; }
.case-body h3 { font-size: 18px; margin-bottom: 8px; }
.case-body .tag { display: inline-block; font-size: 12px; color: var(--primary); background: var(--light); padding: 3px 10px; border-radius: 50px; margin-bottom: 10px; }

/* process */
.process { counter-reset: step; }
.process-item { position: relative; padding: 30px 24px; border-radius: var(--radius); background: #fff; border: 1px solid var(--border); text-align: center; }
.process-item .step-no { width: 52px; height: 52px; margin: 0 auto 16px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 800; color: #fff; background: linear-gradient(135deg, var(--primary), #1aa2ee); font-size: 18px; }
.process-item h3 { font-size: 17px; margin-bottom: 8px; }

/* counter band */
.counter-band { background: linear-gradient(135deg, var(--primary-dark), var(--primary-deep)); color: #fff; border-radius: 22px; padding: 56px 40px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; text-align: center; }
.counter-band .n { font-size: 40px; font-weight: 800; }
.counter-band .n span { color: var(--primary); }
.counter-band .t { color: rgba(255,255,255,.72); font-size: 14px; margin-top: 6px; }

/* testimonial */
.quote { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 30px; }
.quote .stars { color: var(--accent); margin-bottom: 12px; letter-spacing: 2px; }
.quote p { font-size: 15px; font-style: italic; }
.quote .who { display: flex; align-items: center; gap: 12px; margin-top: 20px; }
.quote .avatar { width: 44px; height: 44px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--teal)); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; }
.quote .who b { color: var(--heading); display: block; font-size: 15px; }
.quote .who small { color: var(--text); }

/* faq */
.faq-list { max-width: 840px; margin: 0 auto; }
.faq-item { background: #fff; border: 1px solid var(--border); border-radius: 14px; margin-bottom: 14px; overflow: hidden; }
.faq-item summary { list-style: none; cursor: pointer; padding: 20px 24px; font-weight: 600; color: var(--heading); display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .plus { color: var(--primary); font-size: 22px; transition: var(--transition); flex: none; }
.faq-item[open] summary .plus { transform: rotate(45deg); }
.faq-item p { padding: 0 24px 20px; font-size: 15px; }

/* cta band */
.cta { background: linear-gradient(135deg, var(--primary), #1aa2ee); border-radius: 24px; padding: 60px 40px; text-align: center; color: #fff; }
.cta h2 { color: #fff; font-size: 32px; }
.cta p { color: rgba(255,255,255,.9); margin: 14px 0 28px; }
.cta .btn { background: #fff; color: var(--primary-dark); }

/* page hero */
.page-hero { background: linear-gradient(160deg, var(--primary-deep), var(--primary-dark)); color: #fff; padding: 80px 0; text-align: center; }
.page-hero h1 { color: #fff; font-size: 36px; margin-bottom: 12px; }
.page-hero p { color: rgba(255,255,255,.8); max-width: 640px; margin: 0 auto; }
.breadcrumb { color: rgba(255,255,255,.6); font-size: 14px; margin-top: 16px; }
.breadcrumb a { color: #8fd6ff; }

/* pricing */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; align-items: stretch; }
.price-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 36px 30px; text-align: center; transition: var(--transition); display: flex; flex-direction: column; }
.price-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.price-card.featured { border-color: var(--primary); box-shadow: 0 20px 60px rgba(51,182,255,.25); position: relative; }
.price-card.featured .badge { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: var(--accent); color: #fff; font-size: 12px; font-weight: 700; padding: 5px 16px; border-radius: 50px; }
.price-card h3 { font-size: 20px; }
.price-card .price { font-size: 42px; font-weight: 800; color: var(--primary-dark); margin: 14px 0; }
.price-card .price small { font-size: 15px; font-weight: 500; color: var(--text); }
.price-card ul { text-align: left; margin: 18px 0 26px; display: grid; gap: 10px; }
.price-card ul li { padding-left: 26px; position: relative; font-size: 15px; }
.price-card ul li::before { content: "✓"; position: absolute; left: 0; color: var(--teal); font-weight: 700; }
.price-card .btn { margin-top: auto; }

/* contact */
.contact-wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 44px; }
.form { display: grid; gap: 16px; }
.form .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form label { font-size: 14px; font-weight: 600; color: var(--heading); margin-bottom: 6px; display: block; }
.form input, .form textarea, .form select { width: 100%; padding: 14px 16px; border: 1px solid var(--border); border-radius: 10px; font: inherit; font-size: 15px; color: var(--heading); background: #fff; transition: var(--transition); }
.form input:focus, .form textarea:focus, .form select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px rgba(51,182,255,.12); }
.form textarea { min-height: 140px; resize: vertical; }
.contact-info { background: var(--light); border-radius: var(--radius); padding: 36px 30px; }
.contact-info h3 { font-size: 20px; margin-bottom: 18px; }
.contact-info .item { display: flex; gap: 14px; margin-bottom: 18px; }
.contact-info .ic { width: 42px; height: 42px; border-radius: 12px; background: #fff; display: flex; align-items: center; justify-content: center; color: var(--primary); font-weight: 700; flex: none; }
.contact-info b { color: var(--heading); display: block; font-size: 14px; }
.contact-info span { font-size: 14px; }

/* footer */
.footer { background: var(--primary-deep); color: rgba(255,255,255,.65); padding: 60px 0 30px; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 32px; }
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 16px; }
.footer .logo { color: #fff; margin-bottom: 14px; }
.footer a { color: rgba(255,255,255,.65); display: block; padding: 4px 0; font-size: 14px; }
.footer a:hover { color: var(--primary); }
.footer p { font-size: 14px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); margin-top: 40px; padding-top: 22px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13px; }

/* reveal */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (max-width: 992px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .pricing-grid { grid-template-columns: 1fr; }
    .contact-wrap { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .hero h1 { font-size: 34px; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); }
    .counter-band { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .header .container { height: 64px; }
    .menu-toggle { display: block; }
    .header-phone { display: none; }
    .nav { position: absolute; top: 64px; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--border); padding: 12px 20px; display: none; }
    .nav.open { display: block; }
    .nav ul { flex-direction: column; gap: 4px; }
    .nav a { display: block; padding: 10px 0; border-bottom: 1px solid var(--border); }
    .nav a::after { display: none; }
    .hero { padding: 70px 0 60px; }
    .hero h1 { font-size: 27px; }
    .section { padding: 60px 0; }
    .section-head h2 { font-size: 26px; }
    .cta { padding: 40px 22px; }
    .cta h2 { font-size: 24px; }
    .footer-grid { grid-template-columns: 1fr; }
    .form .row2 { grid-template-columns: 1fr; }
}

/* ===== 图片 & 新增版块 ===== */
.hero-grid { display:grid; grid-template-columns:1.05fr .95fr; gap:50px; align-items:center; text-align:left; }
.hero-grid .hero-text { text-align:left; }
.hero-media img { width:100%; border-radius:20px; box-shadow:0 30px 70px rgba(0,0,0,.35); }
.hero .container.center { max-width:900px; text-align:center; }
.case-thumb { height:200px; overflow:hidden; }
.case-thumb img, .news-card img, .team-card img, .partners img { display:block; width:100%; }
.case-thumb img, .news-card img { height:100%; object-fit:cover; }
.service-item .thumb { border-radius:12px; overflow:hidden; margin-bottom:16px; height:150px; }
.service-item .thumb img { width:100%; height:100%; object-fit:cover; }
.news-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:26px; }
.news-card { background:#fff; border:1px solid var(--border); border-radius:var(--radius); overflow:hidden; transition:var(--transition); }
.news-card:hover { transform:translateY(-6px); box-shadow:var(--shadow-lg); }
.news-card .body { padding:20px 22px 24px; }
.news-card .date { font-size:12px; color:var(--primary); font-weight:600; }
.news-card h3 { font-size:17px; margin:8px 0; }
.team-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:26px; }
.team-card { text-align:center; background:#fff; border:1px solid var(--border); border-radius:var(--radius); padding:28px 20px; transition:var(--transition); }
.team-card:hover { transform:translateY(-6px); box-shadow:var(--shadow-lg); }
.team-card img { width:104px; height:104px; border-radius:50%; margin:0 auto 16px; }
.team-card h3 { font-size:17px; }
.team-card small { color:var(--primary); font-weight:600; }
.partners { display:grid; grid-template-columns:repeat(6,1fr); gap:20px; align-items:center; }
.partners img { filter:grayscale(1); opacity:.7; transition:var(--transition); }
.partners img:hover { filter:none; opacity:1; }
@media (max-width:992px){ .hero-grid{grid-template-columns:1fr;} .team-grid{grid-template-columns:repeat(2,1fr);} .partners{grid-template-columns:repeat(3,1fr);} }
@media (max-width:640px){ .news-grid{grid-template-columns:1fr;} .partners{grid-template-columns:repeat(2,1fr);} }