/* ============================================================
   行动者｜生活实验室 — ACTION CLUB
   安静、自然、温暖、真诚；像一本缓缓展开的书。
   ============================================================ */

:root {
  --bg: #f7f3ec;             /* 温暖米白 */
  --bg-alt: #efe8db;         /* 燕麦色 */
  --bg-deep: #e7dfcf;        /* 深一点的燕麦 */
  --moss: #77855f;           /* 低饱和苔藓绿 */
  --moss-soft: #8d9878;
  --moss-tint: #eef0e6;
  --brown: #6f5b45;          /* 自然棕 */
  --clay: #b3714f;           /* 少量陶土色 */
  --ink: #2c2a25;            /* 深墨色 */
  --ink-soft: #44403a;       /* 加深，提升正文对比度 */
  --ink-muted: #6b665c;
  --line: #ddd3c2;
  --white: #fffdf9;

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

html[lang="zh-TW"] body {
  font-family: "Noto Sans TC", "Noto Sans SC", "PingFang TC", sans-serif;
}
html[lang="zh-TW"] h1, html[lang="zh-TW"] h2, html[lang="zh-TW"] h3,
html[lang="zh-TW"] .serif {
  font-family: "Noto Serif TC", "Noto Serif SC", serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 2.05;
  font-size: 17.5px;
  letter-spacing: 0.015em;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .serif {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.55;
  letter-spacing: 0.04em;
}

img { max-width: 100%; display: block; }

a { color: inherit; }

.container {
  max-width: 1060px;
  margin: 0 auto;
  padding: 0 24px;
}
.container--narrow { max-width: 780px; }

/* ---------- 阅读进度条 ---------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--moss) 0%, var(--clay) 100%);
  z-index: 60;
  transition: width 0.15s ease-out;
  border-radius: 0 3px 3px 0;
}

/* ---------- 重点划线（手绘感蕴笔底线，滚动到可见时缓缓划出） ---------- */
.hl {
  position: relative;
  color: var(--ink);
  background-image: linear-gradient(104deg,
    rgba(179, 113, 79, 0)   0.9%,
    rgba(179, 113, 79, 0.28) 2.4%,
    rgba(179, 113, 79, 0.35) 50%,
    rgba(179, 113, 79, 0.26) 97%,
    rgba(179, 113, 79, 0)   98%);
  background-repeat: no-repeat;
  background-size: 0% 42%;
  background-position: 0 78%;
  border-radius: 2px;
  padding: 0 2px;
  transition: background-size 1.1s cubic-bezier(0.25, 0.6, 0.3, 1) 0.25s;
}
.hl.drawn { background-size: 100% 42%; }
.hl-moss {
  background-image: linear-gradient(104deg,
    rgba(119, 133, 95, 0)   0.9%,
    rgba(119, 133, 95, 0.3)  2.4%,
    rgba(119, 133, 95, 0.38) 50%,
    rgba(119, 133, 95, 0.28) 97%,
    rgba(119, 133, 95, 0)   98%);
}
@media (prefers-reduced-motion: reduce) {
  .hl { transition: none; background-size: 100% 42%; }
  .scroll-progress { display: none; }
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  background: rgba(247, 243, 236, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(221, 211, 194, 0.6);
  transition: box-shadow 0.4s ease;
}
.site-header.is-scrolled { box-shadow: 0 2px 20px rgba(60, 50, 35, 0.06); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand { display: flex; flex-direction: column; line-height: 1.25; text-decoration: none; }
.brand-en {
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--moss);
  font-weight: 600;
}
.brand-zh {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.header-nav { display: flex; align-items: center; gap: 26px; }
.header-nav a {
  text-decoration: none;
  font-size: 14.5px;
  color: var(--ink-soft);
  transition: color 0.3s;
}
.header-nav a:hover { color: var(--moss); }

.header-actions { display: flex; align-items: center; gap: 14px; }

.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
  background: var(--white);
}
.lang-toggle button {
  border: none;
  background: transparent;
  font-family: var(--sans);
  font-size: 12.5px;
  padding: 5px 12px;
  cursor: pointer;
  color: var(--ink-muted);
  transition: all 0.3s;
}
.lang-toggle button.active {
  background: var(--ink);
  color: var(--bg);
}

.header-cta {
  display: inline-block;
  text-decoration: none;
  font-size: 14px;
  padding: 8px 20px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--bg) !important;
  transition: background 0.3s;
}
.header-cta:hover { background: var(--brown); }

.nav-burger {
  display: none;
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 8px;
  color: var(--ink);
  font-size: 20px;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block;
  text-decoration: none;
  font-family: var(--sans);
  font-size: 16px;
  letter-spacing: 0.06em;
  padding: 15px 38px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.35s ease;
  border: 1px solid transparent;
  text-align: center;
}
.btn-primary {
  background: var(--ink);
  color: var(--bg);
}
.btn-primary:hover { background: var(--moss); transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink-muted);
}
.btn-ghost:hover { border-color: var(--moss); color: var(--moss); }

/* ---------- 首屏 ---------- */
.hero {
  padding: 150px 0 80px;
  position: relative;
  overflow: hidden;
}
/* 首屏文字依次轻柔浮现 */
.hero-copy > * {
  opacity: 0;
  transform: translateY(18px);
  animation: heroRise 1s ease forwards;
}
.hero-copy .hero-kicker  { animation-delay: 0.1s; }
.hero-copy h1            { animation-delay: 0.25s; }
.hero-copy .hero-tagline { animation-delay: 0.45s; }
.hero-copy .hero-sub     { animation-delay: 0.6s; }
.hero-copy .hero-buttons { animation-delay: 0.75s; }
.hero-copy .hero-note    { animation-delay: 0.95s; }
@keyframes heroRise {
  to { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  .hero-copy > * { animation: none; opacity: 1; transform: none; }
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}
.hero-kicker {
  font-size: 13px;
  letter-spacing: 0.42em;
  color: var(--moss);
  font-weight: 600;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: clamp(30px, 4.6vw, 46px);
  font-weight: 700;
  margin-bottom: 22px;
}
.hero-tagline {
  font-family: var(--serif);
  font-size: clamp(18px, 2.3vw, 22px);
  color: var(--brown);
  margin-bottom: 22px;
}
.hero-sub {
  font-size: 17px;
  color: var(--ink-soft);
  max-width: 30em;
  margin-bottom: 38px;
}
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-figure {
  position: relative;
}
.hero-figure img {
  border-radius: 6px 60px 6px 6px;
  aspect-ratio: 4 / 4.6;
  object-fit: cover;
  box-shadow: 0 24px 60px rgba(80, 66, 44, 0.16);
  animation: gentleFloat 7s ease-in-out infinite;
}
@keyframes gentleFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
@media (prefers-reduced-motion: reduce) {
  .hero-figure img { animation: none; }
}
.hero-figure::after {
  content: "";
  position: absolute;
  inset: 18px -18px -18px 18px;
  border: 1px solid var(--line);
  border-radius: 6px 60px 6px 6px;
  z-index: -1;
}
.hero-note {
  margin-top: 26px;
  font-size: 14px;
  color: var(--ink-muted);
  letter-spacing: 0.08em;
}

/* ---------- 章节通用 ---------- */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); }
.section-moss { background: var(--moss-tint); }

.section-kicker {
  font-size: 12.5px;
  letter-spacing: 0.4em;
  color: var(--moss);
  font-weight: 600;
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(24px, 3.4vw, 34px);
  margin-bottom: 30px;
}
.section-head { max-width: 720px; }
.section-head.center { margin: 0 auto; text-align: center; }

.prose p { margin-bottom: 1.3em; color: var(--ink-soft); }
.prose p:last-child { margin-bottom: 0; }
.prose strong { color: var(--ink); font-weight: 600; }

/* ---------- 为什么需要生活实验 ---------- */
.why-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
  align-items: center;
}
.why-figure img {
  border-radius: 60px 6px 6px 6px;
  aspect-ratio: 4 / 4.4;
  object-fit: cover;
  box-shadow: 0 20px 50px rgba(80, 66, 44, 0.14);
}

.try-list {
  list-style: none;
  margin: 28px 0;
  border-left: 2px solid var(--moss-soft);
  padding-left: 26px;
}
.try-list li {
  font-family: var(--serif);
  font-size: 17.5px;
  color: var(--ink);
  padding: 7px 0;
}

/* ---------- 品牌核心主张 ---------- */
.claim {
  text-align: center;
  position: relative;
}
.claim-title {
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 700;
  margin-bottom: 34px;
}
.claim-body {
  max-width: 640px;
  margin: 0 auto;
  font-family: var(--serif);
  font-size: clamp(17.5px, 2vw, 20px);
  color: var(--ink-soft);
  line-height: 2.15;
}
.claim-body p { margin-bottom: 1.4em; }
.claim-body p:last-child { margin-bottom: 0; }
.claim-orn {
  width: 46px;
  height: 1px;
  background: var(--clay);
  margin: 0 auto 40px;
  position: relative;
}
.claim-orn::after {
  content: "";
  position: absolute;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--clay);
  top: -2px; left: 50%;
  transform: translateX(-50%);
}

/* ---------- 每月三件事 ---------- */
.trio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 56px;
}
.trio-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 44px 34px;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}
.trio-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(80, 66, 44, 0.1);
}
.trio-num {
  font-family: var(--serif);
  font-size: 15px;
  color: var(--clay);
  letter-spacing: 0.2em;
  margin-bottom: 16px;
}
.trio-card h3 { font-size: 21px; margin-bottom: 14px; }
.trio-card p { font-size: 16px; color: var(--ink-soft); }
.trio-foot {
  margin-top: 44px;
  text-align: center;
  font-size: 15.5px;
  color: var(--ink-muted);
}

/* ---------- 四个方向 ---------- */
.dir-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
  margin-top: 52px;
}
.dir-card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 40px 36px;
  position: relative;
  overflow: hidden;
}
.dir-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: var(--moss-soft);
  opacity: 0.7;
}
.dir-card:nth-child(2)::before { background: var(--clay); }
.dir-card:nth-child(3)::before { background: var(--brown); }
.dir-card:nth-child(4)::before { background: var(--moss); }
.dir-en {
  font-size: 11.5px;
  letter-spacing: 0.3em;
  color: var(--ink-muted);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.dir-card h3 { font-size: 23px; margin-bottom: 12px; }
.dir-card > p { font-size: 16px; color: var(--ink-soft); margin-bottom: 18px; }
.dir-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.dir-tags span {
  font-size: 13.5px;
  color: var(--brown);
  background: var(--bg-alt);
  border-radius: 999px;
  padding: 4px 13px;
  transition: background 0.35s ease, color 0.35s ease, transform 0.35s ease;
}
.dir-tags span:hover {
  background: var(--moss);
  color: var(--white);
  transform: translateY(-2px);
}
.dir-card {
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}
.dir-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(80, 66, 44, 0.1);
}
.dir-note {
  margin-top: 46px;
  text-align: center;
}
.dir-note p {
  display: inline-block;
  max-width: 620px;
  font-family: var(--serif);
  font-size: 17px;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
  padding-top: 26px;
}

/* ---------- 是什么 / 不是什么 ---------- */
.isnt {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.isnt-figure img {
  border-radius: 6px;
  aspect-ratio: 4 / 3.2;
  object-fit: cover;
  box-shadow: 0 20px 50px rgba(80, 66, 44, 0.14);
}
.isnt-text .prose p {
  font-family: var(--serif);
  font-size: 18px;
  line-height: 2.15;
}

/* ---------- 适合谁 ---------- */
.fit-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 30px;
  margin-top: 50px;
  align-items: start;
}
.fit-card {
  border-radius: 8px;
  padding: 42px 38px;
}
.fit-card.yes { background: var(--white); border: 1px solid var(--line); }
.fit-card.no { background: transparent; border: 1px dashed var(--line); }
.fit-card h3 {
  font-size: 19px;
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.fit-card.yes h3 { color: var(--moss); }
.fit-card.no h3 { color: var(--ink-muted); }
.fit-card ul { list-style: none; }
.fit-card li {
  position: relative;
  padding: 8px 0 8px 26px;
  font-size: 16px;
  color: var(--ink-soft);
}
.fit-card.yes li::before {
  content: "○";
  position: absolute;
  left: 0;
  color: var(--moss);
  font-size: 13px;
}
.fit-card.no li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--ink-muted);
}
.fit-card.no li { color: var(--ink-muted); }

/* ---------- 加入 ---------- */
.join { text-align: center; }
.join-card {
  max-width: 560px;
  margin: 0 auto;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 60px 48px;
  box-shadow: 0 22px 60px rgba(80, 66, 44, 0.12);
}
.join-price {
  font-family: var(--serif);
  font-size: 54px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.1;
}
.join-price small {
  font-size: 17px;
  font-weight: 400;
  color: var(--ink-muted);
  letter-spacing: 0.08em;
}
.join-per { font-size: 14px; color: var(--ink-muted); margin: 8px 0 32px; }
.join-list {
  list-style: none;
  text-align: left;
  max-width: 340px;
  margin: 0 auto 36px;
  border-top: 1px solid var(--line);
  padding-top: 26px;
}
.join-list li {
  position: relative;
  padding: 7px 0 7px 26px;
  font-size: 16px;
  color: var(--ink-soft);
}
.join-list li::before {
  content: "·";
  position: absolute;
  left: 6px;
  color: var(--clay);
  font-size: 24px;
  line-height: 1.2;
}
.join-btn { width: 100%; font-size: 17px; padding: 17px 20px; }
.join-note {
  margin-top: 24px;
  font-size: 14.5px;
  color: var(--ink-muted);
  line-height: 2;
}
.join-contact {
  margin-top: 18px;
  font-size: 14px;
  color: var(--ink-muted);
}
.join-contact a { color: var(--moss); text-decoration: none; border-bottom: 1px solid transparent; }
.join-contact a:hover { border-bottom-color: var(--moss); }

/* ---------- FAQ ---------- */
.faq-list { max-width: 720px; margin: 48px auto 0; }
.faq-item {
  border-bottom: 1px solid var(--line);
}
.faq-q {
  width: 100%;
  background: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 24px 4px;
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  text-align: left;
  letter-spacing: 0.03em;
}
.faq-q .faq-icon {
  flex: none;
  font-size: 20px;
  font-weight: 300;
  color: var(--moss);
  transition: transform 0.35s ease;
}
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s ease;
}
.faq-a p {
  padding: 0 4px 26px;
  font-size: 16.5px;
  color: var(--ink-soft);
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--ink);
  color: rgba(247, 243, 236, 0.75);
  padding: 60px 0 40px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
  flex-wrap: wrap;
}
.footer-brand-en {
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--moss-soft);
  font-weight: 600;
}
.footer-brand-zh {
  font-family: var(--serif);
  font-size: 19px;
  color: var(--bg);
  margin: 4px 0 10px;
}
.footer-tagline { font-size: 13.5px; }
.footer-meta { text-align: right; font-size: 13px; line-height: 2.1; }
.footer-meta a { color: var(--bg-deep); text-decoration: none; }
.footer-meta a:hover { color: var(--bg); }
.footer-bottom {
  margin-top: 44px;
  padding-top: 22px;
  border-top: 1px solid rgba(247, 243, 236, 0.14);
  font-size: 12px;
  color: rgba(247, 243, 236, 0.45);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 轻柔浮现动效 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.9s ease, transform 0.9s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* 卡片组依次浮现（错落延迟） */
.trio-grid .reveal:nth-child(2), .dir-grid .reveal:nth-child(2) { transition-delay: 0.15s; }
.trio-grid .reveal:nth-child(3), .dir-grid .reveal:nth-child(3) { transition-delay: 0.3s; }
.dir-grid .reveal:nth-child(4) { transition-delay: 0.45s; }
.fit-grid .reveal:nth-child(2) { transition-delay: 0.2s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .hero { padding: 120px 0 64px; }
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero-figure { max-width: 480px; }
  .why-grid { grid-template-columns: 1fr; gap: 40px; }
  .why-figure { order: 2; max-width: 480px; }

  .trio-grid { grid-template-columns: 1fr; gap: 18px; }
  .dir-grid { grid-template-columns: 1fr; gap: 18px; }
  .isnt { grid-template-columns: 1fr; gap: 36px; }
  .fit-grid { grid-template-columns: 1fr; gap: 20px; }
  .section { padding: 72px 0; }
}

@media (max-width: 820px) {
  .header-nav {
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 10px 24px 18px;
    display: none;
  }
  .header-nav.open { display: flex; }
  .header-nav a { padding: 11px 0; font-size: 16px; width: 100%; }
  .nav-burger { display: block; }
  .header-cta { display: none; }
}

@media (max-width: 520px) {
  body { font-size: 16.5px; }
  .join-card { padding: 46px 26px; }
  .hero-buttons .btn { width: 100%; }
  .footer-meta { text-align: left; }
}