/* ============================================================
   自愈太极官网  ·  style.css
   主色：清雅墨绿 / 浅青  ·  辅色：米白 / 浅灰 / 淡金
   风格：国风、简约、治愈、轻养生
   ============================================================ */

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
                 "Helvetica Neue", Arial, "Hiragino Sans GB", "Heiti SC", sans-serif;
    font-size: 16px;
    line-height: 1.75;
    color: #2d3a35;
    background: #faf8f3;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; transition: color .25s; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }

/* ---------- 设计变量 ---------- */
:root {
    --color-primary: #2d5a4f;          /* 主墨绿 */
    --color-primary-dark: #1a3329;
    --color-primary-light: #4a7a6e;
    --color-teal: #6a9587;
    --color-teal-light: #a8c5b8;
    --color-teal-pale: #e8f0ec;
    --color-cream: #faf8f3;             /* 米白背景 */
    --color-cream-deep: #f5f1e8;
    --color-gray: #8b928c;
    --color-gray-light: #d4d0c4;
    --color-gold: #c9a96e;
    --color-gold-light: #e6d4a8;
    --color-text: #2d3a35;
    --color-text-soft: #5a6660;
    --color-text-light: #8b928c;
    --color-border: #e8e5dd;
    --shadow-sm: 0 2px 8px rgba(45, 90, 79, .06);
    --shadow-md: 0 4px 24px rgba(45, 90, 79, .08);
    --shadow-lg: 0 12px 48px rgba(45, 90, 79, .12);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --container: 1200px;
    --transition: .3s ease;
}

/* ---------- 排版辅助 ---------- */
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.text-center { text-align: center; }
.text-balance { text-wrap: balance; }

h1, h2, h3, h4 { color: var(--color-primary-dark); font-weight: 600; line-height: 1.3; }
h1 { font-size: clamp(2rem, 5vw, 3.25rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.75rem, 3.6vw, 2.5rem); letter-spacing: -.01em; }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.625rem); }
h4 { font-size: 1.125rem; }

p { color: var(--color-text-soft); }
small { color: var(--color-text-light); font-size: .875rem; }

/* ---------- 通用按钮 ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 14px 32px; border-radius: 999px; font-size: 1rem; font-weight: 500;
    transition: all var(--transition); white-space: nowrap;
    border: 1px solid transparent;
}
.btn-primary {
    background: var(--color-primary); color: #fff;
    box-shadow: 0 6px 20px rgba(45, 90, 79, .25);
}
.btn-primary:hover {
    background: var(--color-primary-dark); transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(45, 90, 79, .35);
}
.btn-outline {
    border-color: var(--color-primary); color: var(--color-primary);
    background: rgba(255,255,255,.6);
}
.btn-outline:hover {
    background: var(--color-primary); color: #fff;
}
.btn-gold {
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-light) 100%);
    color: #fff; box-shadow: 0 6px 20px rgba(201, 169, 110, .3);
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(201, 169, 110, .45); }
.btn-ghost { color: var(--color-primary); padding: 12px 20px; }

/* ---------- 顶部导航 ---------- */
.site-header {
    position: sticky; top: 0; z-index: 150;
    background: rgba(250, 248, 243, .92);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid var(--color-border);
}
.nav {
    display: flex; align-items: center; justify-content: space-between;
    height: 72px; max-width: var(--container); margin: 0 auto; padding: 0 24px;
}
.logo {
    display: flex; align-items: center; gap: 10px;
    font-size: 1.375rem; font-weight: 700; color: var(--color-primary-dark);
    letter-spacing: .02em;
}
.logo-mark {
    width: 36px; height: 36px; display: grid; place-items: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-teal) 100%);
    border-radius: 50%; color: #fff;
}
.nav-menu {
    display: flex; align-items: center; gap: 8px;
}
.nav-menu a {
    padding: 10px 16px; font-size: .9375rem; font-weight: 500;
    color: var(--color-text-soft); border-radius: var(--radius-sm);
}
.nav-menu a:hover, .nav-menu a.active { color: var(--color-primary); background: var(--color-teal-pale); }
.nav-cta { margin-left: 12px; }
/* 导航栏"领取资料"：与其它 nav-link 视觉统一，背景更浅 */
.nav-cta.btn-primary,
.nav-cta.btn-primary:hover {
    background: #f4f8f6;
    color: var(--color-primary-dark);
    border-color: transparent;
    box-shadow: none;
    padding: 10px 16px;
    transform: none;
}
.nav-toggle {
    display: none; width: 44px; height: 44px; border-radius: var(--radius-sm);
    align-items: center; justify-content: center; color: var(--color-primary);
}
.nav-toggle span { width: 22px; height: 2px; background: currentColor; position: relative; transition: all var(--transition); }
.nav-toggle span::before, .nav-toggle span::after {
    content: ''; position: absolute; left: 0; width: 100%; height: 2px; background: currentColor; transition: all var(--transition);
}
.nav-toggle span::before { top: -7px; }
.nav-toggle span::after { top: 7px; }
.nav-toggle.active span { background: transparent; }
.nav-toggle.active span::before { top: 0; transform: rotate(45deg); }
.nav-toggle.active span::after { top: 0; transform: rotate(-45deg); }

/* ---------- 页脚 ---------- */
.site-footer {
    background: var(--color-primary-dark); color: rgba(255,255,255,.7);
    padding: 64px 0 24px; margin-top: 80px;
}
.footer-grid {
    display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 48px;
    max-width: var(--container); margin: 0 auto; padding: 0 24px 48px;
    border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-brand .logo { color: #fff; }
.footer-brand p { color: rgba(255,255,255,.65); margin-top: 16px; max-width: 320px; }
.footer h5 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: rgba(255,255,255,.65); font-size: .9375rem; }
.footer-links a:hover { color: var(--color-gold-light); }
.footer-contact { font-size: .9375rem; line-height: 2; }
.footer-contact .label { color: rgba(255,255,255,.5); margin-right: 8px; }
.footer-contact .value { color: #fff; }
.footer-bottom {
    max-width: var(--container); margin: 0 auto; padding: 24px;
    display: flex; justify-content: space-between; align-items: center;
    font-size: .875rem; color: rgba(255,255,255,.5); flex-wrap: wrap; gap: 12px;
}

/* ---------- 通用区块 ---------- */
.section { padding: 80px 0; }
.section-tight { padding: 56px 0; }
.section-cream { background: var(--color-cream); }
.section-white { background: #fff; }
.section-dark { background: var(--color-primary-dark); color: rgba(255,255,255,.85); }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-dark p { color: rgba(255,255,255,.7); }

.section-head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.section-head .eyebrow {
    display: inline-block; padding: 6px 16px; background: var(--color-teal-pale);
    color: var(--color-primary); font-size: .875rem; border-radius: 999px;
    margin-bottom: 16px; font-weight: 500;
}
.section-head h2 { margin-bottom: 16px; }
.section-head p { font-size: 1.0625rem; color: var(--color-text-soft); }

/* ---------- 首屏 Banner ---------- */
.hero {
    position: relative; overflow: hidden;
    background: linear-gradient(160deg, var(--color-teal-pale) 0%, var(--color-cream) 60%, var(--color-cream-deep) 100%);
    padding: 96px 0 80px;
}
.hero::before {
    content: ''; position: absolute; inset: 0; pointer-events: none;
    background:
        radial-gradient(600px circle at 80% 20%, rgba(168, 197, 184, .5), transparent 60%),
        radial-gradient(500px circle at 10% 80%, rgba(201, 169, 110, .15), transparent 60%);
}
.hero-inner {
    position: relative; display: grid; grid-template-columns: 1.1fr 1fr; gap: 64px;
    align-items: center; max-width: var(--container); margin: 0 auto; padding: 0 24px;
}
.hero-content .badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 16px; background: rgba(255,255,255,.7); border: 1px solid var(--color-border);
    border-radius: 999px; font-size: .875rem; color: var(--color-primary);
    margin-bottom: 24px; backdrop-filter: blur(8px);
}
.hero-content .badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--color-teal); }
.hero-content h1 { margin-bottom: 20px; }
.hero-content h1 .accent { color: var(--color-primary); }
.hero-content .subtitle {
    font-size: 1.125rem; color: var(--color-text-soft); max-width: 520px; margin-bottom: 36px;
}
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats {
    display: flex; gap: 40px; margin-top: 56px; padding-top: 32px;
    border-top: 1px solid var(--color-border);
}
.hero-stats .stat-num {
    font-size: 1.875rem; font-weight: 700; color: var(--color-primary-dark);
    letter-spacing: -.02em;
}
.hero-stats .stat-label { font-size: .875rem; color: var(--color-text-soft); margin-top: 4px; }

.hero-visual {
    position: relative; aspect-ratio: 1/1; max-width: 480px; margin: 0 auto;
}
.hero-visual .card {
    position: absolute; padding: 20px; background: #fff; border-radius: var(--radius-md);
    box-shadow: var(--shadow-md); border: 1px solid var(--color-border);
}
.hero-visual .circle-bg {
    position: absolute; inset: 10%; border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-teal) 50%, var(--color-teal-light) 100%);
    opacity: .9;
}
.hero-visual .circle-bg::before {
    content: ''; position: absolute; inset: 6%; border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, rgba(255,255,255,.4), transparent 60%);
}
.hero-visual .main-svg {
    position: absolute; inset: 0; z-index: 2;
}
.hero-visual .float-card-1 { top: 6%; left: -6%; z-index: 3; max-width: 200px; }
.hero-visual .float-card-2 { bottom: 8%; right: -4%; z-index: 3; max-width: 220px; }
.hero-visual .float-card-3 { top: 50%; right: -8%; z-index: 3; max-width: 180px; }
.hero-visual .card-icon { width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center; color: #fff; margin-bottom: 10px; }
.hero-visual .card-title { font-size: .9375rem; font-weight: 600; color: var(--color-primary-dark); margin-bottom: 4px; }
.hero-visual .card-desc { font-size: .8125rem; color: var(--color-text-light); }

/* ---------- 差异化对比 ---------- */
.diff-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
    max-width: var(--container); margin: 0 auto;
}
.diff-card {
    padding: 40px; border-radius: var(--radius-lg); background: #fff;
    border: 1px solid var(--color-border); transition: all var(--transition);
}
.diff-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.diff-card.traditional { background: var(--color-cream-deep); }
.diff-card.self-healing {
    background: linear-gradient(160deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: rgba(255,255,255,.9);
}
.diff-card.self-healing h3, .diff-card.self-healing .diff-item-icon { color: #fff; }
.diff-card.self-healing .diff-item { color: rgba(255,255,255,.85); }
.diff-card.self-healing .diff-label { color: var(--color-gold-light); }
.diff-card h3 { margin-bottom: 24px; display: flex; align-items: center; gap: 12px; }
.diff-card .diff-label {
    display: inline-block; padding: 4px 12px; border-radius: 999px;
    font-size: .75rem; background: var(--color-teal-pale); color: var(--color-primary);
    margin-bottom: 8px; font-weight: 500;
}
.diff-card.traditional .diff-label { background: rgba(0,0,0,.06); color: var(--color-text-soft); }
.diff-item {
    display: flex; align-items: flex-start; gap: 12px;
    padding: 14px 0; font-size: 1rem; line-height: 1.6;
    border-bottom: 1px dashed rgba(0,0,0,.06);
}
.diff-card.traditional .diff-item { border-color: rgba(0,0,0,.08); }
.diff-card.self-healing .diff-item { border-color: rgba(255,255,255,.15); }
.diff-item:last-child { border-bottom: 0; }
.diff-item-icon {
    width: 28px; height: 28px; border-radius: 50%; flex-shrink: 0;
    background: rgba(0,0,0,.06); color: var(--color-text-light);
    display: grid; place-items: center; font-size: .875rem;
}
.diff-card.self-healing .diff-item-icon { background: rgba(255,255,255,.18); color: #fff; }

/* ---------- 适合人群 ---------- */
.audience-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.audience-card {
    padding: 28px; background: #fff; border-radius: var(--radius-md);
    border: 1px solid var(--color-border); transition: all var(--transition);
    text-align: left;
}
.audience-card:hover {
    transform: translateY(-6px); box-shadow: var(--shadow-md);
    border-color: var(--color-teal-light);
}
.audience-icon {
    width: 56px; height: 56px; border-radius: var(--radius-md);
    display: grid; place-items: center; margin-bottom: 16px;
    background: var(--color-teal-pale); color: var(--color-primary);
}
.audience-card h4 { margin-bottom: 8px; }
.audience-card p { font-size: .9375rem; }

/* ---------- 核心价值 ---------- */
.value-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.value-card {
    text-align: center; padding: 32px 24px;
}
.value-icon-wrap {
    width: 80px; height: 80px; margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--color-teal-pale) 0%, #fff 100%);
    border-radius: 50%; display: grid; place-items: center;
    border: 1px solid var(--color-border);
}
.value-icon-wrap svg { width: 36px; height: 36px; color: var(--color-primary); }
.value-card h4 { margin-bottom: 12px; }
.value-card p { font-size: .9375rem; }

/* ---------- 案例 ---------- */
.case-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.case-card {
    background: #fff; border-radius: var(--radius-md); overflow: hidden;
    border: 1px solid var(--color-border); transition: all var(--transition);
}
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.case-cover {
    aspect-ratio: 4/3; position: relative; overflow: hidden;
    background: linear-gradient(135deg, var(--color-teal-pale) 0%, var(--color-cream-deep) 100%);
    display: grid; place-items: center;
}
.case-cover .cover-svg { width: 70%; max-width: 220px; opacity: .85; }
.case-cover .case-tag {
    position: absolute; top: 16px; left: 16px;
    padding: 4px 12px; background: rgba(255,255,255,.9); border-radius: 999px;
    font-size: .8125rem; color: var(--color-primary); font-weight: 500;
}
.case-body { padding: 24px; }
.case-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.case-avatar {
    width: 36px; height: 36px; border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-teal) 100%);
    display: grid; place-items: center; color: #fff; font-weight: 600; font-size: .875rem;
}
.case-name { font-size: .9375rem; font-weight: 600; color: var(--color-primary-dark); }
.case-info { font-size: .8125rem; color: var(--color-text-light); }
.case-title { font-size: 1.0625rem; font-weight: 600; margin-bottom: 8px; color: var(--color-primary-dark); }
.case-desc { font-size: .9375rem; color: var(--color-text-soft); }
.case-stat {
    display: flex; align-items: center; gap: 8px; margin-top: 16px;
    padding-top: 16px; border-top: 1px solid var(--color-border);
    font-size: .875rem; color: var(--color-primary); font-weight: 500;
}

/* ---------- 学习流程 ---------- */
.flow-steps {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
    position: relative;
}
.flow-steps::before {
    content: ''; position: absolute; top: 36px; left: 16.67%; right: 16.67%;
    height: 2px; background: linear-gradient(90deg, var(--color-teal-light), var(--color-gold-light));
    z-index: 0;
}
.flow-step {
    text-align: center; position: relative; z-index: 1;
}
.flow-num {
    width: 72px; height: 72px; margin: 0 auto 20px;
    background: #fff; border: 2px solid var(--color-teal-light);
    border-radius: 50%; display: grid; place-items: center;
    font-size: 1.5rem; font-weight: 700; color: var(--color-primary);
}
.flow-step h4 { margin-bottom: 8px; }
.flow-step p { font-size: .9375rem; }

/* ---------- 资料领取模块 ---------- */
.lead-magnet {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: var(--radius-lg); padding: 56px;
    color: #fff; display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px;
    align-items: center; max-width: var(--container); margin: 0 auto;
    position: relative; overflow: hidden;
}
.lead-magnet::before {
    content: ''; position: absolute; inset: 0; pointer-events: none;
    background:
        radial-gradient(400px circle at 90% 10%, rgba(201, 169, 110, .25), transparent 50%),
        radial-gradient(300px circle at 10% 90%, rgba(168, 197, 184, .25), transparent 50%);
}
.lead-content { position: relative; }
.lead-content .badge {
    display: inline-block; padding: 4px 14px; background: rgba(255,255,255,.15);
    border-radius: 999px; font-size: .8125rem; margin-bottom: 16px;
    border: 1px solid rgba(255,255,255,.25);
}
.lead-content h2 { color: #fff; margin-bottom: 16px; }
.lead-content p { color: rgba(255,255,255,.8); font-size: 1.0625rem; margin-bottom: 24px; }
.lead-features { display: flex; flex-direction: column; gap: 12px; }
.lead-features li { display: flex; align-items: center; gap: 12px; color: rgba(255,255,255,.9); font-size: .9375rem; }
.lead-features svg { color: var(--color-gold-light); flex-shrink: 0; }

.lead-form { position: relative; background: #fff; padding: 32px; border-radius: var(--radius-md); color: var(--color-text); }
.lead-form h3 { font-size: 1.25rem; margin-bottom: 8px; }
.lead-form .lead-form-desc { font-size: .875rem; color: var(--color-text-light); margin-bottom: 20px; }
.form-field { margin-bottom: 14px; }
.form-field label { display: block; font-size: .875rem; color: var(--color-text-soft); margin-bottom: 6px; }
.form-field input, .form-field textarea {
    width: 100%; padding: 12px 14px; border: 1px solid var(--color-border);
    border-radius: var(--radius-sm); background: var(--color-cream); transition: all var(--transition);
    color: var(--color-text);
}
.form-field input:focus, .form-field textarea:focus {
    outline: none; border-color: var(--color-primary); background: #fff;
    box-shadow: 0 0 0 3px var(--color-teal-pale);
}
.form-submit { width: 100%; margin-top: 8px; }
.form-privacy { font-size: .75rem; color: var(--color-text-light); text-align: center; margin-top: 12px; }
.form-success {
    display: none; padding: 24px; background: var(--color-teal-pale);
    border-radius: var(--radius-sm); text-align: center;
    color: var(--color-primary-dark); margin-top: 16px;
}
.form-success.show { display: block; }

/* ---------- 课程卡片 ---------- */
.course-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.course-card {
    background: #fff; border-radius: var(--radius-lg); overflow: hidden;
    border: 1px solid var(--color-border); transition: all var(--transition);
    display: flex; flex-direction: column;
}
.course-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--color-teal-light); }
.course-card.featured {
    border-color: var(--color-primary); box-shadow: 0 0 0 4px var(--color-teal-pale);
}
.course-card .course-header {
    padding: 32px 28px; background: linear-gradient(160deg, var(--color-teal-pale) 0%, var(--color-cream) 100%);
    position: relative;
}
.course-card.featured .course-header {
    background: linear-gradient(160deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: #fff;
}
.course-tag-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.course-tag {
    padding: 4px 12px; background: rgba(255,255,255,.85); color: var(--color-primary);
    border-radius: 999px; font-size: .75rem; font-weight: 500;
}
.course-card.featured .course-tag { background: var(--color-gold-light); color: var(--color-primary-dark); }
.course-level { font-size: .75rem; color: var(--color-text-light); }
.course-card.featured .course-level { color: rgba(255,255,255,.7); }
.course-icon {
    width: 56px; height: 56px; border-radius: var(--radius-md);
    background: rgba(255,255,255,.85); display: grid; place-items: center;
    color: var(--color-primary); margin-bottom: 16px;
}
.course-card.featured .course-icon { background: rgba(255,255,255,.2); color: #fff; }
.course-header h3 { margin-bottom: 8px; }
.course-card.featured h3 { color: #fff; }
.course-header .course-summary { font-size: .9375rem; }
.course-card.featured .course-summary { color: rgba(255,255,255,.85); }
.course-body { padding: 28px; flex: 1; display: flex; flex-direction: column; }
.course-list { margin-bottom: 24px; }
.course-list li {
    padding: 10px 0; border-bottom: 1px dashed var(--color-border);
    display: flex; align-items: flex-start; gap: 10px; font-size: .9375rem;
}
.course-list li:last-child { border-bottom: 0; }
.course-list svg { color: var(--color-primary); flex-shrink: 0; margin-top: 4px; }
.course-meta { display: flex; gap: 20px; margin-bottom: 20px; padding: 16px; background: var(--color-cream); border-radius: var(--radius-sm); }
.course-meta .meta-item { font-size: .875rem; }
.course-meta .meta-label { color: var(--color-text-light); }
.course-meta .meta-value { font-weight: 600; color: var(--color-primary-dark); }
.course-action { margin-top: auto; }

/* ---------- 文章列表 ---------- */
.article-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.article-card {
    background: #fff; border-radius: var(--radius-md); overflow: hidden;
    border: 1px solid var(--color-border); transition: all var(--transition);
}
.article-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.article-cover {
    aspect-ratio: 16/9; background: linear-gradient(135deg, var(--color-teal-pale), var(--color-cream-deep));
    position: relative; display: grid; place-items: center;
}
.article-cover .cat-badge {
    position: absolute; top: 14px; left: 14px;
    padding: 4px 12px; background: rgba(255,255,255,.92); border-radius: 999px;
    font-size: .75rem; color: var(--color-primary); font-weight: 500;
}
.article-cover .cover-icon { width: 60px; height: 60px; color: var(--color-primary); opacity: .65; }
.article-body { padding: 20px; }
.article-body h3 { font-size: 1.125rem; margin-bottom: 10px; line-height: 1.5; }
.article-body p { font-size: .875rem; margin-bottom: 16px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.article-meta {
    display: flex; align-items: center; justify-content: space-between;
    padding-top: 16px; border-top: 1px solid var(--color-border);
    font-size: .8125rem; color: var(--color-text-light);
}

/* ---------- FAQ ---------- */
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item {
    background: #fff; border-radius: var(--radius-md); margin-bottom: 12px;
    border: 1px solid var(--color-border); overflow: hidden;
    transition: all var(--transition);
}
.faq-item.open { box-shadow: var(--shadow-sm); border-color: var(--color-teal-light); }
.faq-question {
    width: 100%; padding: 20px 24px; display: flex; align-items: center;
    justify-content: space-between; text-align: left;
    font-size: 1.0625rem; font-weight: 600; color: var(--color-primary-dark);
}
.faq-question .icon {
    width: 28px; height: 28px; flex-shrink: 0; margin-left: 16px;
    border-radius: 50%; background: var(--color-teal-pale); color: var(--color-primary);
    display: grid; place-items: center; transition: transform var(--transition);
}
.faq-item.open .faq-question .icon { transform: rotate(45deg); background: var(--color-primary); color: #fff; }
.faq-answer {
    max-height: 0; overflow: hidden; transition: max-height .4s ease;
}
.faq-answer-inner { padding: 0 24px 24px; color: var(--color-text-soft); font-size: .9375rem; line-height: 1.8; }
.faq-item.open .faq-answer { max-height: 600px; }

/* ---------- 关于 / 时间线 ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.about-visual {
    aspect-ratio: 1/1; max-width: 460px; margin: 0 auto;
    background: linear-gradient(135deg, var(--color-teal-pale), var(--color-cream-deep));
    border-radius: var(--radius-lg); padding: 40px; position: relative;
    display: grid; place-items: center;
}
.about-visual svg { width: 80%; }
.about-content h2 { margin-bottom: 20px; }
.about-content p { margin-bottom: 16px; font-size: 1.0625rem; }
.about-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 32px; padding-top: 32px; border-top: 1px solid var(--color-border); }
.about-stats .stat-num { font-size: 2rem; font-weight: 700; color: var(--color-primary); line-height: 1; }
.about-stats .stat-label { font-size: .875rem; color: var(--color-text-soft); margin-top: 8px; }

/* ---------- 时间线 / 资讯 ---------- */
.timeline { position: relative; max-width: 720px; margin: 0 auto; }
.timeline::before {
    content: ''; position: absolute; top: 0; bottom: 0; left: 24px;
    width: 2px; background: var(--color-border);
}
.news-item {
    position: relative; padding-left: 64px; padding-bottom: 32px;
}
.news-item::before {
    content: ''; position: absolute; left: 16px; top: 8px;
    width: 18px; height: 18px; border-radius: 50%;
    background: #fff; border: 4px solid var(--color-primary);
}
.news-card {
    background: #fff; padding: 24px; border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}
.news-date { font-size: .8125rem; color: var(--color-primary); margin-bottom: 8px; font-weight: 500; }
.news-card h3 { font-size: 1.125rem; margin-bottom: 8px; }
.news-card p { font-size: .9375rem; }
.news-card .tag {
    display: inline-block; padding: 3px 10px; background: var(--color-teal-pale);
    color: var(--color-primary); border-radius: 999px;
    font-size: .75rem; margin-bottom: 12px;
}

/* ---------- 联系我们 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact-info { padding: 8px 0; }
.contact-info h2 { margin-bottom: 16px; }
.contact-info > p { margin-bottom: 32px; }
.contact-list { display: flex; flex-direction: column; gap: 24px; }
.contact-item {
    display: flex; align-items: flex-start; gap: 16px;
    padding: 20px; background: #fff; border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}
.contact-icon {
    width: 48px; height: 48px; border-radius: var(--radius-md);
    background: var(--color-teal-pale); color: var(--color-primary);
    display: grid; place-items: center; flex-shrink: 0;
}
.contact-item h4 { font-size: 1rem; margin-bottom: 4px; }
.contact-item .value { color: var(--color-primary); font-weight: 600; }
.contact-item .desc { font-size: .875rem; color: var(--color-text-light); margin-top: 4px; }
.contact-form { background: #fff; padding: 36px; border-radius: var(--radius-md); border: 1px solid var(--color-border); }
.contact-form h3 { margin-bottom: 8px; }
.contact-form > p { font-size: .875rem; margin-bottom: 24px; }

/* ---------- 落地页 ---------- */
.landing-hero {
    background: linear-gradient(160deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: #fff; padding: 80px 0; position: relative; overflow: hidden;
}
.landing-hero::before {
    content: ''; position: absolute; inset: 0;
    background:
        radial-gradient(500px circle at 85% 15%, rgba(201, 169, 110, .25), transparent 50%),
        radial-gradient(400px circle at 15% 85%, rgba(168, 197, 184, .25), transparent 50%);
}
.landing-hero .container { position: relative; }
.landing-hero .badge {
    display: inline-block; padding: 6px 14px; background: rgba(255,255,255,.15);
    border: 1px solid rgba(255,255,255,.25); border-radius: 999px;
    font-size: .875rem; margin-bottom: 20px;
}
.landing-hero h1 { color: #fff; margin-bottom: 20px; max-width: 760px; }
.landing-hero p { color: rgba(255,255,255,.85); font-size: 1.125rem; max-width: 640px; margin-bottom: 32px; }
.landing-bonus {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
    max-width: 720px; margin: 40px auto 0;
}
.bonus-card {
    padding: 20px; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18);
    border-radius: var(--radius-md); backdrop-filter: blur(6px);
}
.bonus-card .icon { width: 40px; height: 40px; margin-bottom: 12px; color: var(--color-gold-light); }
.bonus-card h4 { color: #fff; font-size: 1rem; margin-bottom: 6px; }
.bonus-card p { color: rgba(255,255,255,.7); font-size: .8125rem; margin: 0; }

.landing-section { padding: 80px 0; }
.landing-form-card {
    max-width: 520px; margin: 0 auto; background: #fff;
    padding: 40px; border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg); border: 1px solid var(--color-border);
}
.landing-form-card h2 { text-align: center; margin-bottom: 8px; }
.landing-form-card .form-desc { text-align: center; font-size: .9375rem; margin-bottom: 24px; }
.landing-form-card .guarantee {
    display: flex; align-items: center; gap: 8px; justify-content: center;
    margin-top: 16px; font-size: .8125rem; color: var(--color-text-light);
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
    padding: 16px 0; background: var(--color-cream-deep);
    border-bottom: 1px solid var(--color-border);
    font-size: .875rem; color: var(--color-text-light);
}
.breadcrumb .container { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.breadcrumb a { color: var(--color-text-soft); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb .sep { color: var(--color-gray-light); }

/* ---------- 内页 Hero ---------- */
.page-hero {
    padding: 64px 0; background: linear-gradient(160deg, var(--color-teal-pale) 0%, var(--color-cream) 100%);
    text-align: center; position: relative; overflow: hidden;
}
.page-hero::before {
    content: ''; position: absolute; inset: 0; pointer-events: none;
    background: radial-gradient(500px circle at 50% 100%, rgba(201, 169, 110, .15), transparent 60%);
}
.page-hero .container { position: relative; }
.page-hero .eyebrow {
    display: inline-block; padding: 6px 16px; background: rgba(255,255,255,.7);
    border: 1px solid var(--color-border); border-radius: 999px;
    font-size: .875rem; color: var(--color-primary); margin-bottom: 20px;
}
.page-hero h1 { margin-bottom: 16px; }
.page-hero p { font-size: 1.125rem; color: var(--color-text-soft); max-width: 720px; margin: 0 auto; }

/* ---------- 锚点标签 ---------- */
.cat-tabs {
    display: flex; gap: 12px; justify-content: center; flex-wrap: wrap;
    margin-bottom: 40px;
}
.cat-tab {
    padding: 8px 20px; background: #fff; border: 1px solid var(--color-border);
    border-radius: 999px; font-size: .9375rem; color: var(--color-text-soft);
    cursor: pointer; transition: all var(--transition);
}
.cat-tab.active, .cat-tab:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

/* ---------- 悬浮客服 ---------- */
.floating-cta {
    position: fixed; bottom: 24px; right: 24px; z-index: 90;
    display: flex; flex-direction: column; gap: 12px;
}
.float-btn {
    width: 56px; height: 56px; border-radius: 50%;
    background: var(--color-primary); color: #fff;
    box-shadow: 0 8px 24px rgba(45, 90, 79, .35);
    display: grid; place-items: center;
    transition: all var(--transition); cursor: pointer;
}
.float-btn:hover { transform: translateY(-2px) scale(1.05); }
.float-btn.float-top { background: #fff; color: var(--color-primary); border: 1px solid var(--color-border); opacity: 0; pointer-events: none; transition: all var(--transition); }
.float-btn.float-top.show { opacity: 1; pointer-events: auto; }

/* ---------- CTA 板块 ---------- */
.cta-band {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    padding: 64px 0; text-align: center; color: #fff;
}
.cta-band h2 { color: #fff; margin-bottom: 16px; }
.cta-band p { color: rgba(255,255,255,.85); font-size: 1.125rem; max-width: 600px; margin: 0 auto 32px; }
.cta-band .btn-primary { background: #fff; color: var(--color-primary); }
.cta-band .btn-primary:hover { background: var(--color-cream); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
    .hero-inner { grid-template-columns: 1fr; gap: 48px; }
    .hero-visual { width: 100%; max-width: 360px; margin: 0 auto; aspect-ratio: 1/1; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .audience-grid, .value-grid { grid-template-columns: repeat(2, 1fr); }
    .case-grid, .course-grid, .article-grid { grid-template-columns: repeat(2, 1fr); }
    .diff-grid, .about-grid, .contact-grid { grid-template-columns: 1fr; }
    .lead-magnet { grid-template-columns: 1fr; padding: 40px; }
    .flow-steps { grid-template-columns: 1fr; gap: 24px; }
    .flow-steps::before { display: none; }
    .landing-bonus { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .section { padding: 64px 0; }
    .container { padding: 0 20px; }
    .nav { height: 64px; padding: 0 20px; }
    .nav-menu {
        position: fixed; top: 64px; left: 0; right: 0;
        height: calc(100vh - 64px);
        max-height: calc(100vh - 64px);
        z-index: 200;
        flex-direction: column; align-items: stretch; gap: 6px;
        background: var(--color-cream); padding: 16px 20px 32px;
        transform: translateX(100%); transition: transform var(--transition);
        overflow-y: auto;
        box-shadow: 0 8px 24px rgba(0,0,0,.08);
    }
    .nav-menu.open { transform: translateX(0); }
    .nav-menu a {
        display: block;
        padding: 14px 16px; border-radius: var(--radius-sm);
        font-size: 1rem;
        border-bottom: 1px solid transparent;
    }
    .nav-cta {
        margin: 16px 0 0; padding: 0;
        display: block; text-align: center;
        border-top: 1px solid var(--color-border);
        padding-top: 20px !important;
    }
    .nav-cta.btn {
        width: 100%;
        padding: 14px 32px !important;
    }
    .nav-toggle { display: flex; }

    /* 浮动卡片在移动端容易把 hero-visual 撑变形，桌面装饰用，移动端直接隐藏 */
    .hero-visual { width: 100%; max-width: 320px; aspect-ratio: 1/1; margin: 0 auto; }
    .hero-visual .float-card-1,
    .hero-visual .float-card-2,
    .hero-visual .float-card-3 { display: none; }

    .hero { padding: 64px 0 56px; }
    .hero-stats { flex-wrap: wrap; gap: 24px; }
    .hero-stats > div { flex: 1 1 40%; }

    .audience-grid, .value-grid { grid-template-columns: 1fr; }
    .case-grid, .course-grid, .article-grid { grid-template-columns: 1fr; }

    .section-head { margin-bottom: 36px; }
    .lead-magnet { padding: 32px 24px; gap: 32px; }

    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; text-align: center; }

    .floating-cta { bottom: 16px; right: 16px; }
    .float-btn { width: 52px; height: 52px; }
}

@media (max-width: 480px) {
    .hero-cta { flex-direction: column; align-items: stretch; }
    .hero-cta .btn { justify-content: center; }
    .lead-form, .contact-form, .landing-form-card { padding: 24px 20px; }
}

/* ---------- 滚动条入场 ---------- */
.fade-in { opacity: 0; transform: translateY(20px); transition: opacity .7s, transform .7s; }
.fade-in.in { opacity: 1; transform: translateY(0); }

/* ---------- 选中态 ---------- */
::selection { background: var(--color-teal-light); color: var(--color-primary-dark); }

/* ---------- 可访问性 ---------- */
button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* 减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
    html { scroll-behavior: auto; }
}