/* ============================================================
   啡乐世饮品解决方案 - 全站样式表
   参考 beevision.xyz 的现代简洁风格，结合咖啡主题色调
   ============================================================ */

/* ---------- 设计变量 ---------- */
:root {
    --primary: #6F4E37;        /* 咖啡深棕 */
    --primary-dark: #4B3220;
    --secondary: #C4A484;      /* 拿铁米色 */
    --accent: #D4A59A;          /* 玫瑰拿铁 */
    --light: #F8F4EF;           /* 浅奶泡 */
    --bg: #ffffff;
    --dark: #1f2933;
    --text: #4b5563;
    --text-light: #94a3b8;
    --border: #e5e7eb;
    --shadow-sm: 0 2px 6px rgba(0,0,0,0.06);
    --shadow-md: 0 6px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 14px 40px rgba(0,0,0,0.12);
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 18px;
    --transition: all 0.3s ease;
}

/* ---------- 基础重置 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
                 "Hiragino Sans GB", "Microsoft YaHei", Tahoma, Arial, sans-serif;
    color: var(--text);
    line-height: 1.65;
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
h1,h2,h3,h4 { color: var(--dark); font-weight: 700; line-height: 1.25; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部导航 ---------- */
.site-header {
    position: fixed; top: 0; left: 0; width: 100%;
    background: rgba(255,255,255,0.96);
    backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--border);
    z-index: 100;
}
.nav-bar {
    display: flex; justify-content: space-between; align-items: center;
    height: 72px;
}
.brand {
    display: flex; align-items: center; gap: 10px;
    font-size: 20px; font-weight: 800; color: var(--primary);
}
.brand-logo {
    width: 36px; height: 36px; border-radius: 50%;
    background: var(--primary); color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; font-weight: 800;
}
.nav-links { display: flex; gap: 36px; }
.nav-links a {
    font-size: 15px; font-weight: 500; color: var(--dark);
    position: relative; padding: 6px 0;
}
.nav-links a:hover, .nav-links a.active { color: var(--primary); }
.nav-links a.active::after {
    content: ""; position: absolute; left: 0; bottom: -4px;
    width: 100%; height: 2px; background: var(--primary); border-radius: 2px;
}
.nav-cta {
    background: var(--primary); color: #fff !important;
    padding: 9px 22px; border-radius: 999px;
    font-weight: 600; font-size: 14px;
}
.nav-cta:hover { background: var(--primary-dark); }

/* ---------- Hero 大图区 ---------- */
.hero {
    position: relative;
    min-height: 92vh;
    display: flex; align-items: center;
    background:
        linear-gradient(135deg, rgba(75,50,15,0.78) 0%, rgba(111,78,55,0.45) 100%),
        url('images/building.webp') center/cover no-repeat;
    color: #fff;
    padding-top: 72px;
}
.hero-inner { max-width: 720px; }
.hero-tag {
    display: inline-block;
    background: rgba(255,255,255,0.18); border: 1px solid rgba(255,255,255,0.35);
    padding: 6px 14px; border-radius: 999px;
    font-size: 13px; letter-spacing: 0.4px;
    margin-bottom: 18px;
}
.hero h1 {
    color: #fff; font-size: 56px; line-height: 1.15;
    margin-bottom: 22px;
}
.hero h1 span { color: var(--secondary); }
.hero p { font-size: 18px; opacity: 0.92; max-width: 600px; margin-bottom: 36px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 28px; border-radius: 999px;
    font-weight: 600; font-size: 15px;
    cursor: pointer; border: none;
    transition: var(--transition);
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-ghost {
    background: rgba(255,255,255,0.12); color: #fff;
    border: 1.5px solid rgba(255,255,255,0.55);
}
.btn-ghost:hover { background: rgba(255,255,255,0.22); }
.btn-light { background: #fff; color: var(--primary); }
.btn-light:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

/* ---------- 通用分区 ---------- */
section { padding: 96px 0; }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 56px; }
.section-head .eyebrow {
    color: var(--primary); font-weight: 700;
    letter-spacing: 2px; font-size: 13px; text-transform: uppercase;
    margin-bottom: 12px;
}
.section-head h2 { font-size: 38px; margin-bottom: 14px; }
.section-head p { color: var(--text); font-size: 16px; }
.bg-light { background: var(--light); }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 28px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 960px) {
    .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-2 { grid-template-columns: 1fr; }
    .hero h1 { font-size: 40px; }
    section { padding: 64px 0; }
}
@media (max-width: 560px) {
    .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .nav-links { display: none; }
}

/* ---------- 卡片通用 ---------- */
.card {
    background: #fff; border-radius: var(--radius-lg);
    padding: 32px; box-shadow: var(--shadow-sm);
    transition: var(--transition); position: relative;
    border: 1px solid rgba(0,0,0,0.04);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.card-icon {
    width: 52px; height: 52px; border-radius: 14px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: #fff; display: flex; align-items: center; justify-content: center;
    font-size: 22px; margin-bottom: 20px;
}
.card h3 { font-size: 20px; margin-bottom: 12px; color: var(--dark); }
.card p { font-size: 14px; color: var(--text); }

/* ---------- 案例展示 ---------- */
.case-card {
    background: #fff; border-radius: var(--radius-lg);
    overflow: hidden; box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.case-thumb {
    aspect-ratio: 4 / 3; overflow: hidden; background: var(--light);
}
.case-thumb img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.5s ease;
}
.case-card:hover .case-thumb img { transform: scale(1.06); }
.case-body { padding: 22px; }
.case-tag {
    display: inline-block; font-size: 12px; font-weight: 600;
    color: var(--primary); background: var(--light);
    padding: 3px 10px; border-radius: 999px; margin-bottom: 10px;
}
.case-body h4 { font-size: 17px; margin-bottom: 6px; }
.case-body p { font-size: 13px; color: var(--text-light); }

/* ---------- 数据条 ---------- */
.stats {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
    padding: 56px; background: var(--primary); color: #fff;
    border-radius: var(--radius-lg);
}
.stats .stat h3 { color: var(--secondary); font-size: 44px; }
.stats .stat p { opacity: 0.85; font-size: 14px; }
@media (max-width: 760px) { .stats { grid-template-columns: repeat(2, 1fr); } }

/* ---------- 教师/团队 ---------- */
.team-card { text-align: center; }
.team-card .avatar {
    width: 130px; height: 130px; border-radius: 50%;
    margin: 0 auto 16px; overflow: hidden;
    border: 4px solid #fff; box-shadow: var(--shadow-md);
}
.team-card .avatar img { width: 100%; height: 100%; object-fit: cover; }
.team-card h4 { font-size: 17px; margin-bottom: 4px; }
.team-card .role { color: var(--primary); font-size: 13px; font-weight: 600; margin-bottom: 8px; }
.team-card p { font-size: 13px; color: var(--text-light); }

/* ---------- 流程步骤 ---------- */
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step {
    background: #fff; padding: 30px 24px; border-radius: var(--radius);
    position: relative; border: 1px solid var(--border);
}
.step::before {
    counter-increment: step;
    content: counter(step, decimal-leading-zero);
    position: absolute; top: -18px; left: 24px;
    width: 38px; height: 38px; border-radius: 50%;
    background: var(--primary); color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 14px;
}
.step h4 { font-size: 16px; margin: 10px 0 8px; }
.step p { font-size: 13px; color: var(--text-light); }
@media (max-width: 960px) { .steps { grid-template-columns: repeat(2, 1fr); } }

/* ---------- 表单 ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: start; }
@media (max-width: 760px) { .form-grid { grid-template-columns: 1fr; } }
.form-card {
    background: #fff; padding: 36px; border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}
.form-card label { display: block; margin-bottom: 6px; font-size: 14px; color: var(--dark); font-weight: 600; }
.form-card input, .form-card textarea, .form-card select {
    width: 100%; padding: 12px 14px; margin-bottom: 18px;
    border: 1px solid var(--border); border-radius: var(--radius-sm);
    font-size: 14px; font-family: inherit;
    transition: var(--transition);
}
.form-card input:focus, .form-card textarea:focus, .form-card select:focus {
    outline: none; border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(111,78,55,0.12);
}
.form-card textarea { min-height: 120px; resize: vertical; }
.contact-info-card { background: var(--primary); color: #fff; padding: 36px; border-radius: var(--radius-lg); }
.contact-info-card h3 { color: #fff; margin-bottom: 18px; font-size: 22px; }
.contact-info-card .info-row { display: flex; gap: 12px; padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,0.12); }
.contact-info-card .info-row:last-child { border-bottom: none; }
.contact-info-card .info-row b { min-width: 72px; color: var(--secondary); font-weight: 600; }

/* ---------- 二维码 ---------- */
.qr-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 18px; }
.qr-box {
    background: rgba(255,255,255,0.08); border-radius: var(--radius);
    padding: 16px; text-align: center; border: 1px solid rgba(255,255,255,0.18);
}
.qr-box img { width: 100%; max-width: 140px; margin: 0 auto 8px; border-radius: 6px; }
.qr-box p { font-size: 13px; opacity: 0.9; }

/* ---------- 页脚 ---------- */
.site-footer { background: #14181f; color: #cbd5e1; padding: 64px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 36px; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-grid h5 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.footer-grid ul li { padding: 5px 0; font-size: 14px; }
.footer-grid ul li a:hover { color: var(--secondary); }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08); padding-top: 18px;
    display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
    font-size: 13px; opacity: 0.7;
}

/* ---------- 简易面包屑 ---------- */
.crumb {
    padding: 24px 0 8px;
    font-size: 13px; color: var(--text-light);
}
.crumb a:hover { color: var(--primary); }
.crumb .sep { margin: 0 6px; opacity: 0.5; }

/* ---------- 内页 Hero ---------- */
.page-hero {
    padding: 140px 0 70px;
    background: linear-gradient(135deg, var(--light) 0%, #fff 100%);
    text-align: center;
}
.page-hero h1 { font-size: 42px; margin-bottom: 12px; }
.page-hero p { font-size: 17px; max-width: 600px; margin: 0 auto; color: var(--text); }