/* =====================================================
   风物魔法调色派对 · 国风清新 · 青绿主调
   ===================================================== */
:root {
  --green: #2E8B7A;
  --green-deep: #1F6A5B;
  --green-soft: #7FBFA8;
  --green-mist: #E8F4EF;
  --paper: #FAF7EF;
  --ink: #33413C;
  --ochre: #C9803B;
  --red: #C0503F;
  --shadow: 0 6px 24px rgba(31, 106, 91, .12);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "KaiTi", "STKaiti", "楷体", "Microsoft YaHei", serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 10%, rgba(127, 191, 168, .18), transparent 40%),
    radial-gradient(circle at 85% 85%, rgba(201, 128, 59, .10), transparent 40%),
    var(--paper);
  min-height: 100vh;
}
.hidden { display: none !important; }
strong { color: var(--green-deep); }

/* ---------- 顶部导航 ---------- */
.topnav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 28px;
  background: rgba(250, 247, 239, .92);
  backdrop-filter: blur(8px);
  border-bottom: 2px solid var(--green-soft);
}
.brand { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.brand-seal {
  background: var(--green); color: #fff;
  padding: 4px 8px; border-radius: 6px;
  font-size: 15px; letter-spacing: 2px;
  box-shadow: 2px 2px 0 var(--green-deep);
}
.brand-name { font-size: 20px; font-weight: bold; color: var(--green-deep); letter-spacing: 3px; }
.nav-tabs { display: flex; gap: 8px; }
.nav-btn {
  border: none; background: transparent; cursor: pointer;
  font-family: inherit; font-size: 16px; letter-spacing: 2px;
  padding: 8px 18px; border-radius: 999px; color: var(--green-deep);
  transition: all .25s;
}
.nav-btn:hover { background: var(--green-mist); }
.nav-btn.active { background: var(--green); color: #fff; box-shadow: var(--shadow); }

main { max-width: 1180px; margin: 0 auto; padding: 28px 24px 60px; }
.page { display: none; animation: fadeIn .4s; }
.page.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

.page-head { text-align: center; margin-bottom: 26px; }
.page-head h2 { font-size: 30px; color: var(--green-deep); letter-spacing: 6px; }
.page-desc { margin-top: 8px; color: #6b7b75; font-size: 16px; }

/* ---------- 按钮 ---------- */
.btn-primary {
  border: none; cursor: pointer; font-family: inherit;
  background: linear-gradient(135deg, var(--green), var(--green-deep));
  color: #fff; font-size: 17px; letter-spacing: 3px;
  padding: 12px 30px; border-radius: 999px;
  box-shadow: 0 6px 16px rgba(31, 106, 91, .3);
  transition: transform .2s, box-shadow .2s;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 22px rgba(31, 106, 91, .38); }
.btn-big { font-size: 20px; padding: 16px 46px; }
.btn-ghost {
  border: 1.5px solid var(--green); background: #fff; color: var(--green-deep);
  font-family: inherit; font-size: 15px; letter-spacing: 2px;
  padding: 9px 20px; border-radius: 999px; cursor: pointer; transition: all .2s;
}
.btn-ghost:hover { background: var(--green-mist); }

/* ---------- 首页 ---------- */
.hero { position: relative; text-align: center; padding: 70px 20px 56px; }
.hero-tag {
  display: inline-block; font-size: 14px; letter-spacing: 3px;
  color: var(--green-deep); background: var(--green-mist);
  border: 1px solid var(--green-soft);
  padding: 6px 18px; border-radius: 999px; margin-bottom: 22px;
}
.hero-title {
  font-size: 64px; letter-spacing: 12px; color: var(--green-deep);
  text-shadow: 3px 3px 0 rgba(127, 191, 168, .35);
}
.hero-sub { font-size: 22px; color: var(--ochre); letter-spacing: 6px; margin-top: 12px; }
.hero-intro { margin: 26px auto 32px; font-size: 17px; line-height: 2; color: #587067; }
.hero-chips { margin-top: 30px; display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }
.chip {
  background: #fff; border: 1.5px solid var(--green-soft); color: var(--green-deep);
  border-radius: 999px; padding: 6px 16px; font-size: 14px; letter-spacing: 2px;
}
.hero-deco { position: absolute; opacity: .5; animation: floatY 5s ease-in-out infinite; }
.hero-deco-1 { top: 40px; left: 6%; }
.hero-deco-2 { top: 90px; right: 8%; animation-delay: 1.2s; }
.hero-deco-3 { bottom: 20px; left: 14%; animation-delay: 2.4s; }
@keyframes floatY { 0%,100% { transform: translateY(0) rotate(-4deg); } 50% { transform: translateY(-16px) rotate(4deg); } }

.home-flow {
  display: flex; align-items: stretch; justify-content: center;
  gap: 18px; margin-top: 30px; flex-wrap: wrap;
}
.flow-card {
  flex: 1; min-width: 240px; max-width: 320px;
  background: #fff; border-radius: 18px; padding: 28px 24px;
  border: 1.5px solid var(--green-soft); box-shadow: var(--shadow);
  text-align: center;
}
.flow-num {
  width: 46px; height: 46px; margin: 0 auto 14px; border-radius: 50%;
  background: var(--green); color: #fff; font-size: 22px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 2px 2px 0 var(--green-deep);
}
.flow-card h3 { color: var(--green-deep); letter-spacing: 3px; margin-bottom: 10px; }
.flow-card p { font-size: 15px; line-height: 1.9; color: #6b7b75; }
.flow-arrow { align-self: center; font-size: 28px; color: var(--green-soft); }

/* ---------- 消除关卡 ---------- */
.level-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 20px; }
.level-card {
  position: relative; cursor: pointer;
  background: #fff; border-radius: 18px; padding: 30px 22px 24px;
  border: 2px solid var(--green-soft); box-shadow: var(--shadow);
  text-align: center; transition: transform .25s;
}
.level-card:hover { transform: translateY(-5px); }
.level-card.locked { opacity: .55; cursor: not-allowed; filter: grayscale(.6); }
.level-badge {
  position: absolute; top: 14px; right: 14px;
  font-size: 12px; letter-spacing: 2px; color: #fff;
  background: var(--green); padding: 3px 10px; border-radius: 999px;
}
.level-card.locked .level-badge { background: #9aa8a2; }
.level-num {
  width: 56px; height: 56px; margin: 0 auto 14px; border-radius: 50%;
  border: 2px solid var(--green); color: var(--green-deep);
  display: flex; align-items: center; justify-content: center; font-size: 26px;
}
.level-card h3 { color: var(--green-deep); letter-spacing: 2px; margin-bottom: 8px; }
.level-card p { font-size: 14px; color: #6b7b75; line-height: 1.8; }
.level-unlock { margin-top: 8px; color: var(--ochre) !important; }
.level-stars { margin: 4px 0 6px; }
.level-stars i, .win-stars i { font-style: normal; color: #D8D3C4; }
.level-stars i.on, .win-stars i.on { color: #E8A93E; text-shadow: 0 1px 2px rgba(201,128,59,.4); }
.win-stars { margin-top: 10px; font-size: 30px; letter-spacing: 6px; }
.win-stars .win-mistakes { font-size: 14px; color: #8ba79d; margin-left: 14px; letter-spacing: 1px; }

.game-status {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 18px; gap: 12px; flex-wrap: wrap;
}
.game-level-name { font-size: 20px; color: var(--green-deep); letter-spacing: 3px; }
.game-progress { font-size: 16px; color: var(--ochre); }
.board { display: grid; gap: 14px; }
.card {
  aspect-ratio: 1 / 1.1; cursor: pointer;
  background: #fff; border-radius: 16px;
  border: 2px solid var(--green-soft); box-shadow: var(--shadow);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 8px; transition: transform .2s, border-color .2s, opacity .35s;
  user-select: none;
}
.card:hover { transform: translateY(-3px); border-color: var(--green); }
.card-inner { width: 72%; }
.card-inner svg { width: 100%; height: auto; display: block; }
.card-name { font-size: 14px; color: var(--green-deep); letter-spacing: 2px; margin-top: 4px; }
.card.selected { border-color: var(--ochre); transform: scale(1.06); box-shadow: 0 8px 20px rgba(201, 128, 59, .3); }
.card.matched { opacity: 0; transform: scale(.4) rotate(10deg); pointer-events: none; }
.card.shake { animation: shake .4s; border-color: var(--red); }
@keyframes shake {
  0%,100% { transform: translateX(0); } 25% { transform: translateX(-6px); }
  50% { transform: translateX(6px); } 75% { transform: translateX(-4px); }
}

/* ---------- AI 调色工坊 ---------- */
.workshop { display: grid; grid-template-columns: 250px 1fr 270px; gap: 22px; align-items: start; }
.ws-title {
  font-size: 17px; color: var(--green-deep); letter-spacing: 3px;
  margin: 6px 0 14px; padding-left: 10px; border-left: 4px solid var(--green);
}
.ws-gallery { position: sticky; top: 86px; }
.gallery-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
  max-height: 66vh; overflow-y: auto; padding-right: 6px;
}
.gallery-grid::-webkit-scrollbar { width: 6px; }
.gallery-grid::-webkit-scrollbar-thumb { background: var(--green-soft); border-radius: 3px; }
.g-cell {
  background: #fff; border-radius: 14px; padding: 10px 6px 8px;
  border: 2px solid var(--green-mist); text-align: center; cursor: pointer;
  transition: all .2s;
}
.g-cell:hover { border-color: var(--green-soft); }
.g-cell.active { border-color: var(--green); box-shadow: var(--shadow); }
.g-cell.locked { cursor: not-allowed; }
.g-art { position: relative; }
.g-art svg { width: 100%; height: auto; display: block; }
.locked-art svg { opacity: .3; filter: grayscale(1); }
.g-lock {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-size: 13px; color: #fff; letter-spacing: 2px;
}
.g-lock::before { content: ''; position: absolute; width: 46px; height: 46px; background: rgba(51,65,60,.55); border-radius: 50%; z-index: -0; }
.g-lock { z-index: 1; }
.g-cell span { font-size: 14px; color: var(--green-deep); letter-spacing: 2px; }

/* 自定义上传风物 */
.g-img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 10px; display: block; }
.g-cell.custom .g-art { position: relative; cursor: pointer; }
.g-del {
  position: absolute; top: 4px; right: 4px; width: 20px; height: 20px;
  background: rgba(51, 65, 60, .65); color: #fff; border-radius: 50%;
  font-size: 14px; line-height: 20px; text-align: center; font-style: normal;
  opacity: 0; transition: opacity .2s; cursor: pointer;
}
.g-cell.custom:hover .g-del { opacity: 1; }
.g-rename {
  margin-top: 4px; border: 1px solid var(--green-soft); background: #fff;
  color: var(--green-deep); font-family: inherit; font-size: 12px;
  letter-spacing: 1px; padding: 2px 10px; border-radius: 999px; cursor: pointer;
}
.g-rename:hover { background: var(--green-mist); }
.g-add {
  border-style: dashed !important; cursor: pointer;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: var(--green) !important; gap: 6px; min-height: 120px;
}
.g-add:hover { background: var(--green-mist); }
.g-add-inner { font-size: 34px; line-height: 1; }
.preview-custom-img {
  max-width: 300px; max-height: 300px; border-radius: 12px;
  border: 2px solid var(--green-soft); box-shadow: var(--shadow);
}
.pv-custom { width: 100%; aspect-ratio: 1; overflow: hidden; border-radius: 50%; }
.pc-art .pv-custom { border-radius: 0; }
.pv-custom img { width: 100%; height: 100%; object-fit: cover; display: block; }

.preview-stage {
  position: relative; min-height: 460px;
  background: #fff; border-radius: 20px; border: 2px dashed var(--green-soft);
  display: flex; align-items: center; justify-content: center;
  padding: 26px; box-shadow: var(--shadow); overflow: hidden;
}
.preview-empty { text-align: center; color: #8ba79d; }
.preview-empty-art svg { width: 300px; height: 300px; }
.preview-empty p { margin-top: 10px; font-size: 15px; letter-spacing: 1px; }

.ai-loading { text-align: center; }
.ai-orb {
  width: 64px; height: 64px; margin: 0 auto 18px; border-radius: 50%;
  background: conic-gradient(var(--green), var(--ochre), var(--green-soft), var(--green));
  animation: spin 1.1s linear infinite;
  -webkit-mask: radial-gradient(circle, transparent 42%, #000 43%);
          mask: radial-gradient(circle, transparent 42%, #000 43%);
}
@keyframes spin { to { transform: rotate(360deg); } }
.ai-loading p { color: var(--green-deep); letter-spacing: 3px; font-size: 16px; animation: blink 1.2s infinite; }
@keyframes blink { 50% { opacity: .45; } }

.preview-result { width: 100%; display: flex; justify-content: center; }
.preview-mode-bar { display: flex; gap: 12px; justify-content: center; margin-top: 18px; flex-wrap: wrap; }
.mode-btn {
  border: 1.5px solid var(--green); background: #fff; color: var(--green-deep);
  font-family: inherit; font-size: 15px; letter-spacing: 2px;
  padding: 9px 22px; border-radius: 999px; cursor: pointer; transition: all .2s;
}
.mode-btn.active { background: var(--green); color: #fff; }

/* 明信片 */
.postcard {
  position: relative; width: 100%; max-width: 640px; aspect-ratio: 1200 / 760;
  border-radius: 8px; display: flex; align-items: center; gap: 2%;
  padding: 4%;
  box-shadow: 0 10px 30px rgba(51, 65, 60, .18);
  border: 3px solid rgba(51, 65, 60, .12);
  animation: fadeIn .5s;
}
.pc-art { width: 44%; }
.pc-art svg { width: 100%; height: auto; display: block; }
.pc-right { flex: 1; position: relative; height: 100%; }
.pc-stamp {
  position: absolute; top: 0; right: 0;
  width: 52px; height: 62px; border: 2px solid; border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; line-height: 1.3; text-align: center;
}
.pc-poem {
  position: absolute; top: 4%; right: 22%; height: 74%;
  writing-mode: vertical-rl; font-size: clamp(14px, 2.2vw, 22px); letter-spacing: 6px;
}
.pc-poem span { display: block; margin-left: 10px; }
.pc-title { position: absolute; bottom: 2%; left: 2%; font-size: clamp(13px, 2vw, 20px); letter-spacing: 2px; white-space: nowrap; }
.pc-foot {
  position: absolute; bottom: -8%; left: 0; right: 0;
  text-align: center; font-size: 12px; color: #9aa8a2; letter-spacing: 2px;
}

/* 茶叶礼盒 */
.teabox {
  position: relative; width: 100%; max-width: 480px; aspect-ratio: 1;
  border-radius: 10px; border: 4px double;
  display: flex; flex-direction: column; align-items: center;
  padding: 4% 5%; box-shadow: 0 10px 30px rgba(51, 65, 60, .18);
  animation: fadeIn .5s;
}
.tb-brand { font-size: clamp(24px, 4.5vw, 42px); letter-spacing: 10px; }
.tb-sub { font-size: clamp(10px, 1.5vw, 13px); letter-spacing: 3px; margin-top: 4px; }
.tb-art { width: 52%; margin: 3% 0 2%; border-radius: 50%; border: 3px solid; overflow: hidden; }
.tb-art svg { width: 100%; height: auto; display: block; }
.tb-name { font-size: clamp(14px, 2.4vw, 22px); letter-spacing: 3px; }
.tb-poem { margin-top: 6px; font-size: clamp(11px, 1.8vw, 16px); letter-spacing: 2px; }
.tb-seal {
  position: absolute; bottom: 5%; right: 6%;
  width: 42px; height: 42px; border-radius: 6px; color: #fff;
  display: flex; align-items: center; justify-content: center; font-size: 22px;
  box-shadow: 2px 2px 0 rgba(51, 65, 60, .25);
}

/* 风格卡 & 魔法按钮 */
.style-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 22px; }
.style-card {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  background: #fff; border-radius: 12px; padding: 10px 14px;
  border: 2px solid var(--green-mist); cursor: pointer; transition: all .2s;
}
.style-card:hover { border-color: var(--green-soft); }
.style-card.active { border-color: var(--green); box-shadow: var(--shadow); }
.style-info strong { display: block; font-size: 15px; color: var(--green-deep); letter-spacing: 2px; }
.style-info small { color: #8ba79d; font-size: 12px; }
.style-dots { display: flex; gap: 4px; }
.style-dots i { width: 16px; height: 16px; border-radius: 50%; border: 1px solid rgba(51,65,60,.15); }

.btn-magic {
  width: 100%; border: none; cursor: pointer; font-family: inherit;
  font-size: 19px; letter-spacing: 4px; color: #fff;
  padding: 15px 0; border-radius: 999px;
  background: linear-gradient(135deg, var(--green) 0%, var(--ochre) 100%);
  box-shadow: 0 8px 20px rgba(201, 128, 59, .35);
  transition: transform .2s;
}
.btn-magic:hover { transform: translateY(-2px) scale(1.02); }
.btn-magic:disabled { opacity: .6; cursor: wait; transform: none; }

.poem-box {
  margin-top: 18px; background: #fff; border-radius: 14px;
  border: 1.5px solid var(--green-soft); padding: 16px;
  box-shadow: var(--shadow);
}
.poem-head { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.poem-seal {
  background: var(--red); color: #fff; font-size: 13px;
  padding: 3px 8px; border-radius: 4px; letter-spacing: 2px;
}
.poem-head span:last-child { font-size: 13px; color: #8ba79d; }
#poemText { font-size: 17px; line-height: 2.1; color: var(--ink); letter-spacing: 3px; }
.cursor { color: var(--green); animation: blink .8s infinite; }

/* ---------- 通关弹窗 ---------- */
.modal-mask {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(31, 60, 52, .45); backdrop-filter: blur(3px);
  display: flex; align-items: center; justify-content: center;
}
.modal {
  background: var(--paper); border-radius: 22px; padding: 30px 34px;
  max-width: 520px; width: 92%; text-align: center;
  border: 2px solid var(--green-soft); box-shadow: 0 20px 60px rgba(0,0,0,.25);
  animation: popIn .35s;
}
@keyframes popIn { from { transform: scale(.8); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.modal-badge {
  display: inline-block; background: var(--ochre); color: #fff;
  font-size: 13px; letter-spacing: 3px; padding: 3px 12px; border-radius: 999px; margin-bottom: 10px;
}
.modal h3 { font-size: 24px; color: var(--green-deep); letter-spacing: 3px; }
.win-unlocks { display: flex; justify-content: center; gap: 20px; margin: 20px 0; flex-wrap: wrap; }
.unlock-art {
  background: #fff; border-radius: 14px; padding: 12px 18px 8px;
  border: 2px dashed var(--green-soft);
}
.unlock-svg svg { width: 120px; height: 120px; }
.unlock-art p { font-size: 14px; color: var(--green-deep); margin-top: 6px; letter-spacing: 2px; }
.win-science { background: var(--green-mist); border-radius: 12px; padding: 14px 18px; text-align: left; }
.science-tag {
  display: inline-block; background: var(--green); color: #fff;
  font-size: 12px; letter-spacing: 2px; padding: 2px 10px; border-radius: 999px; margin-bottom: 8px;
}
.win-science p { font-size: 15px; line-height: 1.9; color: var(--ink); }
.modal-btns { display: flex; gap: 14px; justify-content: center; margin-top: 22px; }
.modal-sm { max-width: 380px; }
.input-modal-title { color: var(--green-deep); letter-spacing: 3px; font-size: 20px; }
.input-modal-tip { margin: 12px 0 14px; font-size: 14px; color: #6b7b75; line-height: 1.8; }
.input-modal-field {
  width: 100%; padding: 10px 14px; font-family: inherit; font-size: 17px;
  letter-spacing: 2px; color: var(--ink);
  border: 2px solid var(--green-soft); border-radius: 10px; outline: none;
  background: #fff; transition: border-color .2s;
}
.input-modal-field:focus { border-color: var(--green); }

/* ---------- 提示浮窗 & Toast ---------- */
.hint-box {
  position: fixed; right: 20px; bottom: 20px; z-index: 60;
  width: 270px; background: #fff; border-radius: 14px;
  border: 2px solid var(--green-soft); box-shadow: var(--shadow); overflow: hidden;
}
.hint-head {
  display: flex; justify-content: space-between; align-items: center;
  background: var(--green); color: #fff; cursor: pointer;
  padding: 8px 14px; font-size: 14px; letter-spacing: 3px;
}
.hint-body { padding: 12px 14px; font-size: 14px; line-height: 1.9; color: #587067; }
.toast {
  position: fixed; top: 74px; left: 50%; transform: translateX(-50%) translateY(-10px);
  z-index: 200; background: var(--ink); color: #fff;
  padding: 10px 24px; border-radius: 999px; font-size: 15px; letter-spacing: 2px;
  opacity: 0; transition: all .3s; pointer-events: none;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- 关于 ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.about-card {
  background: #fff; border-radius: 18px; padding: 26px 28px;
  border: 1.5px solid var(--green-soft); box-shadow: var(--shadow);
}
.about-card h3 {
  color: var(--green-deep); letter-spacing: 4px; font-size: 19px;
  margin-bottom: 12px; padding-bottom: 10px; border-bottom: 2px solid var(--green-mist);
}
.about-card p { font-size: 16px; line-height: 2; color: #587067; }
.about-highlight {
  font-size: 22px !important; color: var(--ochre) !important;
  letter-spacing: 3px; margin-bottom: 8px;
}
.about-foot { text-align: center; margin-top: 34px; color: var(--green-deep); letter-spacing: 4px; font-size: 17px; }

/* ---------- 页脚 ---------- */
.site-foot {
  text-align: center; padding: 18px; font-size: 13px; letter-spacing: 2px;
  color: #8ba79d; border-top: 1px solid var(--green-mist);
}

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .workshop { grid-template-columns: 1fr; }
  .ws-gallery { position: static; }
  .gallery-grid { grid-template-columns: repeat(3, 1fr); max-height: none; }
  .hero-title { font-size: 42px; letter-spacing: 6px; }
  .about-grid { grid-template-columns: 1fr; }
  .hint-box { width: 220px; }
  .flow-arrow { display: none; }
}