/* ============================================================
   绿趣 · 对外品牌官网 —— 高级编辑式杂志体系
   克制配色（米白 / 墨绿 / 细发丝线）+ 超大字号对比 + 图形比例差距拉大
   ============================================================ */
:root {
  /* 品牌色 */
  --primary-green: #2D5A27;
  --secondary-green: #4CAF50;
  --accent-green: #8BC34A;
  --earth-brown: #5D4037;

  --green-900: #16331a;
  --green-800: #1f4423;
  --green-700: #2D5A27;
  --green-600: #3a7239;
  --green-500: #4CAF50;
  --green-400: #6cbf63;
  --green-300: #8BC34A;
  --green-200: #b6d99a;
  --green-100: #dceccd;
  --green-50:  #eef6e8;

  --cream: #f4f1e8;
  --paper: #fbfaf5;
  --white: #ffffff;

  --brown: #5D4037;
  --brown-light: #b08968;

  --ink: #18241a;
  --text: #2c352a;
  --text-light: #5d6b5b;
  --text-muted: #97a191;

  --hair: rgba(22,51,26,.12);
  --hair-strong: rgba(22,51,26,.22);

  --radius: 22px;
  --radius-sm: 14px;
  --shadow: 0 18px 50px rgba(22,51,26,.08);
  --shadow-lg: 0 30px 80px rgba(22,51,26,.16);
  --max-width: 1180px;
  --gap: 30px;

  --font-serif: "Noto Serif SC", "Songti SC", "SimSun", serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--paper);
  line-height: 1.78;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul { list-style: none; }
.container { width: 90%; max-width: var(--max-width); margin: 0 auto; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 15px 34px; border-radius: 999px; font-size: 15px; font-weight: 500;
  letter-spacing: .5px; transition: all .28s ease;
}
.btn-primary { background: var(--secondary-green); color: #fff; box-shadow: 0 12px 30px rgba(76,175,80,.3); }
.btn-primary:hover { background: var(--green-600); transform: translateY(-2px); box-shadow: 0 16px 38px rgba(76,175,80,.4); }
.btn-light { background: #fff; color: var(--primary-green); }
.btn-light:hover { background: var(--green-50); }
.btn-ghost-light { border: 1.5px solid rgba(255,255,255,.45); color: #fff; }
.btn-ghost-light:hover { background: rgba(255,255,255,.12); }
.btn-block { width: 100%; }

/* ---------- 漂浮叶片（保留，形状已确保为带柄真叶） ---------- */
.leaf-float-layer { position: fixed; inset: 0; z-index: 1; pointer-events: none; overflow: hidden; }
.leaf-float-layer .leaf { position: absolute; top: -40px; opacity: 0; animation: leafDrift linear infinite; will-change: transform, opacity; }
.leaf-float-layer .leaf svg { display: block; width: 100%; height: 100%; }
@keyframes leafDrift {
  0%   { transform: translateY(-40px) translateX(0) rotate(0deg); opacity: 0; }
  8%   { opacity: var(--leaf-opacity, .45); }
  92%  { opacity: var(--leaf-opacity, .45); }
  100% { transform: translateY(105vh) translateX(var(--drift-x, 30px)) rotate(var(--spin, 360deg)); opacity: 0; }
}
@media (prefers-reduced-motion: reduce) { .leaf-float-layer { display: none; } }

/* ---------- 导航 ---------- */
.navbar { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; padding: 14px 0; background: rgba(251,250,245,.85); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); box-shadow: 0 1px 18px rgba(22,51,26,.05); transition: background .35s, box-shadow .35s, padding .35s; }
.navbar.scrolled { background: rgba(251,250,245,.96); box-shadow: 0 2px 26px rgba(22,51,26,.08); padding: 10px 0; }
/* 深色 hero 页面：顶部未滚动时恢复透明白字编辑式效果，滚动后回到浅底深字 */
.has-dark-hero .navbar:not(.scrolled) { background: transparent; -webkit-backdrop-filter: none; backdrop-filter: none; box-shadow: none; padding: 20px 0; }
.nav-inner { width: 90%; max-width: var(--max-width); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 9px; font-weight: 700; font-size: 22px; }
.logo-icon { font-size: 26px; }
.logo-text { color: var(--primary-green); font-family: var(--font-serif); letter-spacing: 2px; transition: color .35s; }
.has-dark-hero .navbar:not(.scrolled) .logo-text { color: #fff; }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a { color: var(--text); font-size: 14px; font-weight: 500; transition: color .2s; position: relative; }
.nav-links a:not(.nav-cta)::after { content: ""; position: absolute; left: 0; bottom: -6px; width: 0; height: 2px; background: currentColor; transition: width .25s; }
.nav-links a:not(.nav-cta):hover::after { width: 100%; }
.has-dark-hero .navbar:not(.scrolled) .nav-links a { color: rgba(255,255,255,.92); }
.nav-cta { background: var(--secondary-green); color: #fff !important; padding: 10px 22px; border-radius: 999px; }
.nav-cta:hover { background: var(--green-600); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--primary-green); transition: .3s; }
.has-dark-hero .navbar:not(.scrolled) .nav-toggle span { background: #fff; }

/* ---------- 通用排版组件 ---------- */
.kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12px; font-weight: 600; letter-spacing: 4px; text-transform: uppercase;
  color: var(--secondary-green); margin-bottom: 22px;
}
.kicker::before { content: ""; width: 30px; height: 1.5px; background: var(--secondary-green); }
.kicker-light { color: var(--accent-green); }
.kicker-light::before { background: var(--accent-green); }

.display { font-family: var(--font-serif); font-weight: 700; font-size: clamp(32px, 4.6vw, 58px); line-height: 1.16; color: var(--green-800); letter-spacing: .5px; }
.display-sm { font-family: var(--font-serif); font-weight: 700; font-size: clamp(28px, 3.6vw, 44px); line-height: 1.2; color: var(--green-800); }
.lead { font-size: 17px; color: var(--text-light); line-height: 1.9; margin: 24px 0; }

.section { padding: 130px 0; position: relative; }
.sec-head { margin-bottom: 64px; }
.sec-head.split { display: grid; grid-template-columns: 1.1fr .9fr; gap: 50px; align-items: end; }
.sec-head.center { text-align: center; }
.sec-head.center .kicker { justify-content: center; }
.sec-lead { color: var(--text-light); font-size: 16px; line-height: 1.9; }
.sec-head.light .display { color: #fff; }
.sec-head.light .kicker { color: var(--accent-green); }
.sec-head.light .kicker::before { background: var(--accent-green); }
.sec-head.light .sec-lead { color: rgba(255,255,255,.75); }

/* 渐变占位（无实拍图时替代，后期换真图） */
.g-forest { background: linear-gradient(145deg, var(--green-500), var(--green-900)); }
.g-sage   { background: linear-gradient(145deg, #cfe3c5, #8bc09a); }
.g-moss   { background: linear-gradient(145deg, var(--green-400), var(--green-700)); }
.g-mint   { background: linear-gradient(145deg, #d8f1da, #9dd6a8); }
.g-leaf   { background: linear-gradient(145deg, #bfe0bf, #75b187); }
.g-fern   { background: linear-gradient(145deg, #aed7ae, #5e9a6d); }
.g-brown  { background: linear-gradient(145deg, var(--brown-light), var(--brown)); }
.g-olive  { background: linear-gradient(145deg, #9bc06a, var(--green-700)); }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden;
  background: linear-gradient(135deg, var(--green-900) 0%, var(--green-800) 48%, var(--green-600) 100%); color: #fff; padding: 150px 0 90px; }
.hero-bg { position: absolute; inset: 0; opacity: .16;
  background-image: radial-gradient(circle at 16% 26%, rgba(139,195,74,.6) 0%, transparent 42%), radial-gradient(circle at 84% 74%, rgba(255,255,255,.16) 0%, transparent 38%); }
.hero-inner { position: relative; width: 90%; max-width: var(--max-width); margin: 0 auto; display: grid; grid-template-columns: 5fr 7fr; gap: 56px; align-items: center; }
.hero-text { }
.hero-title { font-family: var(--font-serif); font-weight: 900; font-size: clamp(46px, 7vw, 86px); line-height: 1.04; letter-spacing: 1px; margin: 22px 0 28px; }
.hero-title .hl { color: var(--accent-green); }
.hero-desc { font-size: 17px; color: rgba(255,255,255,.82); max-width: 460px; margin-bottom: 40px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-media { position: relative; }
.hero-figure { position: relative; margin: 0; }
.hero-photo { width: 100%; height: 600px; border-radius: var(--radius); box-shadow: var(--shadow-lg); }
.hero-cap { position: absolute; left: 18px; bottom: 16px; color: rgba(255,255,255,.92); font-size: 13px; letter-spacing: 2px; text-shadow: 0 2px 10px rgba(0,0,0,.35); }
.hero-stat { position: absolute; left: -26px; bottom: -28px; background: var(--paper); border-radius: 18px; padding: 22px 26px; box-shadow: var(--shadow-lg); }
.hero-stat strong { font-family: var(--font-serif); font-size: 40px; font-weight: 700; color: var(--green-700); line-height: 1; display: block; }
.hero-stat strong span { font-size: 22px; color: var(--secondary-green); }
.hero-stat small { display: block; margin-top: 8px; font-size: 12px; color: var(--text-light); letter-spacing: .5px; }
.scroll-hint { position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 8px; color: rgba(255,255,255,.5); font-size: 11px; letter-spacing: 2px; }
.scroll-hint i { width: 1px; height: 34px; background: rgba(255,255,255,.3); }

/* ---------- 理念宣言 ---------- */
.manifesto { background: var(--green-800); color: #fff; padding: 120px 0; text-align: center; }
.manifesto-text { font-family: var(--font-serif); font-weight: 500; font-size: clamp(26px, 4vw, 46px); line-height: 1.5; max-width: 880px; margin: 0 auto; color: rgba(255,255,255,.95); }
.manifesto-text em { font-style: normal; color: var(--accent-green); }

/* ---------- 关于 ---------- */
.about { background: var(--paper); }
.about-grid { display: grid; grid-template-columns: 5fr 6fr; gap: 70px; align-items: center; }
.about-media { position: relative; }
.about-photo { width: 100%; height: 520px; border-radius: var(--radius); box-shadow: var(--shadow-lg); }
.about-chip { position: absolute; right: -22px; bottom: -26px; background: var(--secondary-green); color: #fff; padding: 22px 24px; border-radius: var(--radius); box-shadow: var(--shadow-lg); max-width: 220px; display: flex; gap: 14px; align-items: flex-start; }
.about-chip span { font-size: 26px; }
.about-chip strong { display: block; font-size: 15px; }
.about-chip small { opacity: .82; font-size: 12px; }
.about-text .value-list { margin-top: 28px; border-top: 1px solid var(--hair); }
.about-text .value-list li { padding: 16px 0; color: var(--text-light); font-size: 15px; border-bottom: 1px solid var(--hair); display: flex; gap: 16px; }
.about-text .value-list li span { flex: none; width: 78px; color: var(--secondary-green); font-weight: 600; font-size: 13px; letter-spacing: 1px; padding-top: 2px; }

/* ---------- 服务（1 大 + 5 小，编辑式编号） ---------- */
.services { background: var(--cream); }
.svc-layout { display: grid; grid-template-columns: 1.15fr .85fr; gap: var(--gap); align-items: stretch; }
.svc-feature { position: relative; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); min-height: 560px; display: flex; align-items: flex-end; transition: transform .3s, box-shadow .3s; }
.svc-feature:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.svc-feature-media { position: absolute; inset: 0; }
.svc-feature-body { position: relative; z-index: 2; padding: 40px; color: #fff; background: linear-gradient(transparent, rgba(15,41,24,.86)); width: 100%; }
.svc-feature-body h3 { font-family: var(--font-serif); font-size: 28px; margin: 10px 0 12px; }
.svc-feature-body p { font-size: 14px; opacity: .88; line-height: 1.8; max-width: 420px; }
.svc-index { font-family: var(--font-serif); font-size: 15px; font-weight: 700; color: var(--accent-green); letter-spacing: 2px; }
.svc-list { display: flex; flex-direction: column; gap: 14px; }
.svc-row { display: grid; grid-template-columns: auto 1fr 84px; gap: 18px; align-items: center; background: #fff; border: 1px solid var(--hair); border-radius: var(--radius-sm); padding: 20px 22px; transition: transform .25s, box-shadow .25s, border-color .25s; }
.svc-row:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: transparent; }
.svc-row .svc-index { font-size: 20px; color: var(--green-300); }
.svc-row-text h4 { font-family: var(--font-serif); font-size: 17px; color: var(--green-800); margin-bottom: 5px; }
.svc-row-text p { font-size: 13px; color: var(--text-light); line-height: 1.7; }
.svc-thumb { width: 84px; height: 64px; border-radius: 10px; }

/* ---------- 数据条（巨型数字） ---------- */
.stats { background: var(--green-900); color: #fff; padding: 84px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(5, 1fr); }
.stat-item { text-align: center; padding: 0 14px; border-left: 1px solid rgba(255,255,255,.12); }
.stat-item:first-child { border-left: none; }
.stat-item strong { display: block; font-family: var(--font-serif); font-weight: 700; font-size: clamp(46px, 5.5vw, 74px); line-height: 1; color: var(--accent-green); }
.stat-item strong span { font-size: .45em; color: var(--green-300); }
.stat-item span { display: block; margin-top: 14px; font-size: 13px; color: rgba(255,255,255,.6); letter-spacing: 1px; }

/* ---------- 案例（一大带两小） ---------- */
.cases { background: var(--paper); }
.cases-layout { display: grid; grid-template-columns: 1.5fr 1fr; gap: var(--gap); }
.case-feature { position: relative; border-radius: var(--radius); overflow: hidden; min-height: 620px; box-shadow: var(--shadow); cursor: pointer; transition: transform .3s, box-shadow .3s; }
.case-feature:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.case-media { position: absolute; inset: 0; background-size: cover; background-position: center; }
.case-info { position: absolute; bottom: 0; left: 0; right: 0; padding: 38px; color: #fff; background: linear-gradient(transparent, rgba(15,41,24,.88)); }
.case-tag { display: inline-block; font-size: 11px; letter-spacing: 1px; background: rgba(255,255,255,.22); padding: 4px 12px; border-radius: 999px; margin-bottom: 12px; }
.case-info h3 { font-family: var(--font-serif); font-size: 26px; margin-bottom: 8px; }
.case-info p { font-size: 14px; opacity: .85; }
.case-stack { display: flex; flex-direction: column; gap: var(--gap); }
.case-mini { position: relative; flex: 1; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); cursor: pointer; transition: transform .3s, box-shadow .3s; min-height: 296px; }
.case-mini:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.case-mini-media { position: absolute; inset: 0; background-size: cover; background-position: center; }
.case-mini-info { position: absolute; bottom: 0; left: 0; right: 0; padding: 24px; color: #fff; background: linear-gradient(transparent, rgba(15,41,24,.85)); }
.case-mini-info h4 { font-family: var(--font-serif); font-size: 19px; margin-top: 8px; }
.empty-hint { color: var(--green-700); opacity: .7; font-size: 15px; padding: 40px 0; text-align: center; grid-column: 1 / -1; }

/* ---------- 客户心声 ---------- */
.voices { background: var(--green-50); }
.voices-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); }
.voice { background: #fff; border-radius: var(--radius); padding: 40px 36px; box-shadow: var(--shadow); display: flex; flex-direction: column; justify-content: space-between; position: relative; }
.voice::before { content: "\201C"; position: absolute; top: 8px; left: 24px; font-family: var(--font-serif); font-size: 90px; line-height: 1; color: var(--green-100); }
.voice p { font-size: 15px; color: var(--text-light); line-height: 1.85; margin: 30px 0 26px; position: relative; }
.voice footer { display: flex; align-items: center; gap: 14px; }
.v-avatar { width: 44px; height: 44px; border-radius: 50%; background: var(--secondary-green); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 16px; font-weight: 600; }
.voice footer strong { display: block; font-size: 15px; color: var(--green-800); }
.voice footer span { font-size: 13px; color: var(--text-muted); }

/* ---------- 创始人 ---------- */
.founder { background: var(--paper); }
.founder-grid { display: grid; grid-template-columns: 5fr 6fr; gap: 70px; align-items: center; }
.founder-media { position: relative; }
.founder-photo { width: 100%; height: 540px; border-radius: var(--radius); background: linear-gradient(135deg, var(--brown), #4a3328); box-shadow: var(--shadow-lg); }
.founder-card { position: absolute; right: -22px; bottom: -30px; background: var(--secondary-green); color: #fff; padding: 24px; border-radius: var(--radius); box-shadow: var(--shadow-lg); max-width: 220px; }
.founder-card span { font-size: 28px; }
.founder-card strong { display: block; margin-top: 8px; font-size: 16px; }
.founder-card small { opacity: .82; font-size: 12px; }
.founder-text .quote { font-family: var(--font-serif); font-size: 23px; color: var(--green-700); margin: 20px 0; padding-left: 18px; border-left: 3px solid var(--accent-green); }
.founder-text p { color: var(--text-light); margin-bottom: 16px; }
.founder-text .sign { font-family: var(--font-serif); font-weight: 600; color: var(--green-800); margin-top: 8px; }

/* ---------- CTA 横幅 ---------- */
.cta-band { background: linear-gradient(135deg, var(--green-900), var(--green-600)); color: #fff; padding: 110px 0; text-align: center; }
.cta-band .cta-title { font-family: var(--font-serif); font-weight: 700; font-size: clamp(30px, 4.5vw, 50px); margin: 14px 0 14px; }
.cta-band p { color: rgba(255,255,255,.78); margin-bottom: 32px; }

/* ---------- 课堂 / 课程 ---------- */
.classroom { background: var(--paper); }
.classroom-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.classroom-media { position: relative; }
.classroom-photo { width: 100%; height: 380px; border-radius: var(--radius); box-shadow: var(--shadow); }
.classroom-cap { position: absolute; left: 18px; bottom: 16px; color: #fff; font-size: 13px; letter-spacing: 2px; text-shadow: 0 2px 10px rgba(0,0,0,.3); }
.course-grid { grid-column: 1 / 3; display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gap); margin-top: 56px; }
.course-card { background: var(--cream); border-radius: var(--radius-sm); overflow: hidden; box-shadow: var(--shadow); transition: transform .25s; }
.course-card:hover { transform: translateY(-6px); }
.course-img { height: 150px; display: flex; align-items: center; justify-content: center; }
.course-ico { font-size: 48px; line-height: 1; filter: drop-shadow(0 2px 8px rgba(0,0,0,.18)); }
.course-card h4 { font-size: 16px; color: var(--green-800); padding: 16px 16px 8px; }
.course-card p { font-size: 13px; color: var(--text-light); padding: 0 16px 12px; }
.course-meta { padding: 0 16px 18px; font-size: 12px; color: var(--text-muted); }

/* ---------- 加盟 ---------- */
.partner { background: var(--green-900); color: #fff; }
.partner-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); margin-top: 56px; }
.partner-card { background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.12); border-radius: var(--radius); padding: 46px 32px; text-align: center; transition: transform .28s, background .28s; }
.partner-card:hover { transform: translateY(-6px); background: rgba(255,255,255,.09); }
.pc-icon { font-size: 38px; margin-bottom: 16px; }
.partner-card h4 { font-size: 20px; margin-bottom: 12px; }
.partner-card p { font-size: 14px; color: rgba(255,255,255,.7); line-height: 1.8; min-height: 76px; }
.pc-price { margin-top: 22px; font-family: var(--font-serif); font-size: 30px; color: var(--accent-green); }
.pc-price span { font-size: 14px; }
.partner-cta { text-align: center; margin-top: 48px; }

/* ---------- 时间线 ---------- */
.timeline { background: var(--cream); }
.timeline-list { position: relative; max-width: 840px; margin: 0 auto; }
.timeline-list::before { content: ""; position: absolute; left: 50%; top: 0; bottom: 0; width: 1px; background: var(--hair-strong); transform: translateX(-50%); }
.timeline-item { position: relative; width: 50%; padding: 18px 46px; display: flex; flex-direction: column; }
.timeline-item:nth-child(odd) { margin-left: 0; text-align: right; align-items: flex-end; }
.timeline-item:nth-child(even) { margin-left: 50%; }
.timeline-item::before { content: ""; position: absolute; top: 26px; width: 13px; height: 13px; border-radius: 50%; background: var(--secondary-green); border: 3px solid #fff; box-shadow: 0 0 0 2px var(--accent-green); }
.timeline-item:nth-child(odd)::before { right: -7px; }
.timeline-item:nth-child(even)::before { left: -7px; }
.timeline-item .year { font-family: var(--font-serif); font-size: 26px; color: var(--secondary-green); font-weight: 700; }
.timeline-item .event { background: var(--paper); padding: 18px 22px; border-radius: var(--radius-sm); margin-top: 8px; box-shadow: var(--shadow); }
.timeline-item .event h4 { color: var(--green-800); font-size: 16px; margin-bottom: 6px; }
.timeline-item .event p { font-size: 13px; color: var(--text-light); }

/* ---------- 团队 ---------- */
.team { background: var(--green-50); }
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gap); }
.team-member { text-align: center; }
.tm-avatar { width: 92px; height: 92px; border-radius: 50%; margin: 0 auto 18px; background: var(--secondary-green); color: #fff; font-size: 30px; font-weight: 600; display: flex; align-items: center; justify-content: center; }
.tm-avatar.founder-av { background: var(--brown); }
.team-member h4 { font-size: 17px; color: var(--green-800); margin-bottom: 8px; }
.team-member p { font-size: 13px; color: var(--text-light); line-height: 1.75; }
.badges { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 64px; }
.badge { background: #fff; border-radius: var(--radius-sm); padding: 30px 20px; text-align: center; box-shadow: var(--shadow); }
.badge span { font-size: 30px; }
.badge strong { display: block; margin-top: 12px; font-size: 15px; color: var(--green-800); }
.badge small { font-size: 12px; color: var(--text-muted); }

/* ---------- 作品集筛选 ---------- */
.portfolio { background: var(--cream); }
.filter-tabs { display: flex; gap: 10px; flex-wrap: wrap; }
.filter-tabs button { padding: 9px 22px; border-radius: 999px; font-size: 13px; font-weight: 500; color: var(--text-light); background: transparent; border: 1px solid var(--green-200); transition: .2s; }
.filter-tabs button.active, .filter-tabs button:hover { background: var(--secondary-green); color: #fff; border-color: var(--secondary-green); }
.portfolio-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-top: 44px; }
.portfolio-item { cursor: pointer; transition: transform .25s; }
.portfolio-item:hover { transform: translateY(-5px); }
.portfolio-item.hidden { display: none; }
.p-visual { height: 220px; border-radius: var(--radius-sm); margin-bottom: 12px; background-size: cover; background-position: center; }
.portfolio-item h4 { font-size: 15px; color: var(--green-800); }

/* ---------- 联系 ---------- */
.contact { background: var(--paper); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 64px; align-items: start; }
.info-list { margin-top: 36px; }
.info-item { display: flex; gap: 16px; margin-bottom: 24px; }
.info-icon { font-size: 22px; }
.info-item strong { display: block; font-size: 15px; color: var(--green-800); }
.info-item p { color: var(--text-light); font-size: 14px; }
.map-card { width: 100%; height: 220px; border-radius: var(--radius-sm); margin-top: 28px; background: linear-gradient(135deg, #bfe0bf, #75b187); }
.contact-form-wrap { background: #fff; border: 1px solid var(--hair); border-radius: var(--radius); padding: 44px; box-shadow: var(--shadow); }
.contact-form-wrap h3 { font-size: 20px; color: var(--green-800); margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13px; color: var(--text-light); margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 12px 14px; border: 1px solid var(--green-100); border-radius: 10px; font-size: 14px; background: var(--cream); transition: border-color .2s, box-shadow .2s; font-family: inherit; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--green-400); box-shadow: 0 0 0 3px var(--green-50); }
.form-success { text-align: center; padding: 40px 20px; }
.form-success h4 { font-size: 22px; color: var(--green-700); margin-bottom: 10px; }
.form-success p { color: var(--text-light); }
.hidden { display: none !important; }

/* ---------- 页脚 ---------- */
.footer { background: #142418; color: rgba(255,255,255,.7); padding: 76px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer-brand .logo { margin-bottom: 18px; }
.footer-brand .logo-text { color: #fff; }
.footer-brand p { font-size: 14px; line-height: 1.85; margin-bottom: 18px; }
.socials { display: flex; gap: 12px; }
.socials a { width: 38px; height: 38px; border-radius: 50%; background: rgba(255,255,255,.1); display: flex; align-items: center; justify-content: center; font-size: 18px; transition: background .2s; }
.socials a:hover { background: var(--secondary-green); }
.footer-links h4 { color: #fff; font-size: 15px; margin-bottom: 18px; }
.footer-links a { display: block; font-size: 14px; margin-bottom: 10px; opacity: .75; transition: opacity .2s; }
.footer-links a:hover { opacity: 1; color: var(--accent-green); }
.footer-links .admin-link { margin-top: 14px; color: var(--green-300); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); margin-top: 60px; padding: 22px 0; text-align: center; font-size: 13px; opacity: .6; }

/* ---------- 滚动渐现 ---------- */
.reveal { opacity: 0; transform: translateY(36px); transition: opacity .85s cubic-bezier(.2,.7,.2,1), transform .85s cubic-bezier(.2,.7,.2,1); }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-photo { height: 440px; }
  .hero-stat { left: 18px; }
  .about-grid, .founder-grid, .classroom-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-media, .founder-media, .classroom-media { order: -1; }
  .svc-layout { grid-template-columns: 1fr; }
  .svc-feature { min-height: 420px; }
  .cases-layout { grid-template-columns: 1fr; }
  .case-feature { min-height: 380px; }
  .case-stack { flex-direction: row; }
  .case-mini { min-height: 280px; }
  .sec-head.split { grid-template-columns: 1fr; gap: 18px; }
  .voices-grid, .portfolio-grid, .course-grid, .team-grid, .partner-grid, .badges { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(3, 1fr); gap: 34px 16px; }
  .stat-item:nth-child(4), .stat-item:nth-child(5) { border-left: none; }
  .section { padding: 100px 0; }
}
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links { position: fixed; top: 0; right: -100%; width: 74%; max-width: 300px; height: 100vh; background: #fff; flex-direction: column; align-items: flex-start; gap: 0; padding: 84px 28px 28px; box-shadow: -10px 0 40px rgba(0,0,0,.1); transition: right .3s ease; }
  .nav-links.open { right: 0; }
  .nav-links a { color: var(--text); padding: 14px 0; display: block; width: 100%; border-bottom: 1px solid var(--green-50); }
  .nav-cta { display: inline-block !important; width: auto; margin-top: 14px; }
  .navbar.scrolled .nav-links { background: #fff; }
  .section { padding: 76px 0; }
  .display { font-size: 30px; }
  .sec-head { margin-bottom: 44px; }
  .hero { padding: 130px 0 80px; }
  .hero-title { font-size: clamp(38px, 11vw, 54px); }
  .hero-actions { flex-direction: column; }
  .hero-photo { height: 340px; }
  .svc-row { grid-template-columns: auto 1fr; }
  .svc-thumb { display: none; }
  .stats-grid, .voices-grid, .portfolio-grid, .course-grid, .team-grid, .partner-grid, .badges { grid-template-columns: 1fr; }
  .stat-item { border-left: none; padding: 18px 0; border-top: 1px solid rgba(255,255,255,.12); }
  .stat-item:first-child { border-top: none; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .timeline-list::before { left: 6px; }
  .timeline-item { width: 100%; margin-left: 0 !important; padding-left: 34px; padding-right: 0; text-align: left !important; align-items: flex-start !important; }
  .timeline-item:nth-child(odd)::before, .timeline-item:nth-child(even)::before { left: 0; right: auto; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .case-stack { flex-direction: column; }
}