/* ======================================
   CrossX Design System — 暮光茶室 v2
   黄昏时分，一杯热茶的温度。
   全界面对比度优化 · 顺滑过渡
   ====================================== */

:root {
  --ink: #2C1810;
  --cocoa: #4A2E22;
  --caramel: #B87840;
  --caramel-light: #D0A070;
  --cream: #E8D5C0;
  --cream-dark: #D4C0A8;
  --rice: #FBF6F0;
  --warm: #FFFDFB;
  --white: #FFFFFF;
  --danger: #C0392B;
  --danger-bg: #FEF5F4;
  --success: #3D7238;
  --shadow-sm: 0 1px 3px rgba(44,24,16,0.05);
  --shadow: 0 3px 12px rgba(44,24,16,0.07);
  --shadow-lg: 0 8px 28px rgba(44,24,16,0.1);
  --shadow-glow: 0 4px 16px rgba(184,120,64,0.22);
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius: 14px;
  --radius-lg: 18px;
  --radius-full: 999px;
  --font: -apple-system,BlinkMacSystemFont,'SF Pro Display','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  --ease: cubic-bezier(0.4,0,0.2,1);
  --ease-out: cubic-bezier(0,0,0.2,1);
  --ease-spring: cubic-bezier(0.34,1.56,0.64,1);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font);background:var(--rice);color:var(--ink);
  line-height:1.65;min-height:100vh;-webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
a{color:var(--caramel);text-decoration:none;transition:color 0.15s}
a:hover{color:var(--cocoa)}
img{max-width:100%;display:block}

/* ---------- Typography ---------- */
h1{font-size:1.55rem;font-weight:650;line-height:1.25;letter-spacing:-0.03em}
h2{font-size:1.25rem;font-weight:620;line-height:1.3;letter-spacing:-0.02em}
h3{font-size:1.05rem;font-weight:600}
h4{font-size:0.9rem;font-weight:580}
.text-body{font-size:0.9rem;color:var(--cocoa);line-height:1.65}
.text-caption{font-size:0.78rem;color:#8B6F5A}

/* ---------- Container ---------- */
.container{width:100%;max-width:460px;margin:0 auto;padding:0 20px}

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:11px 24px;font-size:0.9rem;font-weight:560;
  font-family:var(--font);border:none;border-radius:var(--radius-full);
  cursor:pointer;transition:all 0.2s var(--ease);
  -webkit-tap-highlight-color:transparent;user-select:none;
  letter-spacing:-0.01em;
}
.btn:active{transform:scale(0.97)}
.btn:disabled{opacity:0.5;cursor:not-allowed;pointer-events:none}
.btn-primary{
  background:var(--cocoa);color:var(--warm);
  box-shadow:0 3px 12px rgba(74,46,34,0.18);
}
.btn-primary:hover{background:var(--ink);box-shadow:0 6px 20px rgba(74,46,34,0.25);transform:translateY(-1px)}
.btn-outline{
  background:transparent;color:var(--cocoa);border:1.5px solid var(--cream-dark);
}
.btn-outline:hover{background:var(--cocoa);color:var(--warm);border-color:var(--cocoa)}
.btn-ghost{background:transparent;color:var(--cocoa)}
.btn-ghost:hover{background:rgba(184,120,64,0.08);color:var(--caramel)}
.btn-danger{background:transparent;color:var(--danger)}
.btn-danger:hover{background:var(--danger-bg)}
.btn-block{width:100%}
.btn-lg{padding:13px 32px;font-size:0.95rem;font-weight:580}
.btn-sm{padding:10px 16px;font-size:0.85rem;font-weight:560;min-height:42px}

/* ============ INPUTS ============ */
.input-group{margin-bottom:16px}
.input-group label{display:block;font-size:0.82rem;font-weight:560;color:var(--ink);margin-bottom:5px}
.input{
  width:100%;padding:12px 15px;font-size:0.92rem;font-family:var(--font);
  color:var(--ink);background:var(--white);border:1.5px solid var(--cream-dark);
  border-radius:var(--radius-sm);transition:all 0.2s;outline:none;
}
.input::placeholder{color:#C4B4A4}
.input:focus{border-color:var(--caramel);box-shadow:0 0 0 3px rgba(184,120,64,0.1)}
textarea.input{resize:vertical;min-height:80px;max-height:240px;overflow-y:auto;line-height:1.6;scrollbar-width:thin;scrollbar-color:var(--cream-dark) transparent}
.input-hint{font-size:0.75rem;color:#A09080;margin-top:4px}
select.input{
  appearance:none;background-image:url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%23A09080' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;padding-right:36px;
}

/* ============ CARD ============ */
.card{
  background:var(--white);border:1px solid var(--cream);
  border-radius:var(--radius);padding:20px;
  box-shadow:var(--shadow-sm);transition:all 0.25s var(--ease);
}
.card:hover{box-shadow:var(--shadow);transform:translateY(-1px)}

/* ============ NAVIGATION ============ */
.nav{
  position:sticky;top:0;z-index:100;
  background:rgba(251,246,240,0.85);
  backdrop-filter:blur(18px) saturate(150%);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  border-bottom:1px solid var(--cream);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  max-width:460px;margin:0 auto;padding:11px 20px;
}
.nav-logo{
  font-size:1.12rem;font-weight:650;color:var(--ink);
  letter-spacing:-0.02em;display:flex;align-items:center;gap:7px;
}
.nav-logo .logo-mark{width:20px;height:20px;background:var(--caramel);border-radius:6px}
.nav-links{display:flex;gap:8px;align-items:center}
.nav-links a.nav-link{
  font-size:0.84rem;font-weight:540;color:var(--cocoa);
  padding:8px 12px;min-height:40px;display:inline-flex;align-items:center;
  border-radius:var(--radius-sm);transition:all 0.15s;
}
.nav-links a.nav-link:hover{background:rgba(184,120,64,0.08);color:var(--caramel)}

/* ============ HERO ============ */
.hero{
  text-align:center;padding:50px 20px 36px;position:relative;overflow:hidden;
}
.hero::before{
  content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;
  background:radial-gradient(ellipse at 40% 30%,rgba(208,160,112,0.08) 0%,transparent 50%),
             radial-gradient(ellipse at 60% 55%,rgba(184,120,64,0.05) 0%,transparent 45%);
  z-index:0;animation:heroDrift 25s ease-in-out infinite alternate;
}
@keyframes heroDrift{0%{transform:translate(0,0)scale(1)}100%{transform:translate(-1%,-0.4%)scale(1.02)}}
.hero-content{position:relative;z-index:1}
.hero .hero-icon{
  width:56px;height:56px;background:linear-gradient(145deg,var(--caramel-light),var(--caramel));
  border-radius:var(--radius);margin:0 auto 14px;display:flex;align-items:center;
  justify-content:center;box-shadow:var(--shadow-glow);
}
.hero h1{font-size:1.65rem;margin-bottom:10px;font-weight:650}
.hero .subtitle{font-size:0.92rem;color:#8B6F5A;max-width:320px;margin:0 auto 22px;line-height:1.6}
.hero .btn{margin-top:2px}

/* ============ KEYFRAMES ============ */
@keyframes revealUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes slideUp{from{transform:translateY(100%)}to{transform:translateY(0)}}
@keyframes toastIn{from{opacity:0;transform:translateY(-6px)scale(0.97)}to{opacity:1;transform:translateY(0)scale(1)}}
@keyframes shimmer{0%{background-position:-200% 0}100%{background-position:200% 0}}
@keyframes breathe{0%,100%{box-shadow:0 0 0 0 rgba(184,120,64,0.15)}50%{box-shadow:0 0 0 10px transparent}}
@keyframes spin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}

/* ============ STEPS ============ */
.steps{display:flex;gap:14px;padding:28px 20px;max-width:460px;margin:0 auto}
.step{flex:1;text-align:center}
.step-icon{
  width:46px;height:46px;border-radius:var(--radius-sm);background:var(--white);
  border:1px solid var(--cream);display:flex;align-items:center;justify-content:center;
  margin:0 auto 10px;transition:all 0.25s var(--ease);
}
.step:hover .step-icon{transform:scale(1.06);box-shadow:var(--shadow);border-color:var(--caramel)}
.step h4{font-size:0.86rem;margin-bottom:3px;font-weight:580}
.step p{font-size:0.76rem;color:#A09080;line-height:1.4}

/* ============ FEATURES ============ */
.features{padding:36px 20px;max-width:460px;margin:0 auto}
.features h3{text-align:center;margin-bottom:18px}
.features-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.feature-card{
  background:var(--white);border:1px solid var(--cream);
  border-radius:var(--radius);padding:22px 14px;text-align:center;
  transition:all 0.25s var(--ease);
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--caramel)}
.feature-icon{
  width:42px;height:42px;border-radius:var(--radius-sm);
  background:rgba(184,120,64,0.07);display:inline-flex;
  align-items:center;justify-content:center;margin-bottom:10px;
}
.feature-card h4{font-size:0.82rem;margin-bottom:4px;font-weight:580}
.feature-card p{font-size:0.74rem;color:#A09080;line-height:1.4}

/* ============ CTA ============ */
.cta{text-align:center;padding:40px 20px 48px}
.cta h3{margin-bottom:14px}

/* ============ PRICING ============ */
.pricing{padding:28px 20px;max-width:460px;margin:0 auto}
.pricing-header{text-align:center;margin-bottom:18px}
.pricing-grid{display:flex;flex-direction:column;gap:10px}
.price-card{
  background:var(--white);border:1px solid var(--cream);
  border-radius:var(--radius);padding:18px 20px;
  display:flex;align-items:center;gap:16px;
  transition:all 0.25s var(--ease);cursor:pointer;box-shadow:var(--shadow-sm);
}
.price-card:hover{border-color:var(--caramel);box-shadow:var(--shadow);transform:translateX(2px)}
.price-card.popular{
  border:2px solid var(--caramel);box-shadow:var(--shadow-glow);position:relative;
}
.price-card.popular::before{
  content:'最受欢迎';position:absolute;top:-11px;left:50%;transform:translateX(-50%);
  background:var(--caramel);color:var(--warm);font-size:0.7rem;font-weight:560;
  padding:3px 14px;border-radius:var(--radius-full);
}
.price-left{flex-shrink:0;text-align:center;min-width:64px}
.price-name{font-weight:560;font-size:0.84rem}
.price-amount{font-size:1.25rem;font-weight:650;color:var(--caramel)}
.price-period{font-size:0.7rem;color:#A09080}
.price-details{flex:1;font-size:0.76rem;color:#8B6F5A;line-height:1.7}

/* ============ FORM PAGES ============ */
.form-page{min-height:100vh;display:flex;flex-direction:column}
.form-container{flex:1;display:flex;align-items:center;justify-content:center;padding:24px 20px}
.form-box{width:100%;max-width:380px}
.form-box h2{text-align:center;margin-bottom:4px}
.form-box .subtitle{text-align:center;color:#A09080;font-size:0.86rem;margin-bottom:22px}
.form-switch{
  display:flex;background:var(--cream);border-radius:var(--radius-full);
  padding:4px;margin-bottom:22px;
}
.form-switch button{
  flex:1;padding:10px;font-size:0.88rem;font-weight:560;font-family:var(--font);
  border:none;border-radius:var(--radius-full);background:transparent;
  color:#8B6F5A;cursor:pointer;transition:all 0.25s var(--ease);
}
.form-switch button.active{background:var(--white);color:var(--ink);box-shadow:var(--shadow-sm)}

/* ============ PROGRESS ============ */
.progress{display:flex;align-items:center;justify-content:center;gap:0;margin-bottom:24px}
.progress-step{
  width:32px;height:32px;border-radius:50%;display:flex;align-items:center;
  justify-content:center;font-size:0.78rem;font-weight:600;
  background:var(--cream);color:#A09080;transition:all 0.25s var(--ease);
}
.progress-step.done{background:var(--caramel);color:var(--warm)}
.progress-step.active{
  background:rgba(184,120,64,0.12);color:var(--caramel);
  box-shadow:0 0 0 4px rgba(184,120,64,0.08);
}
.progress-line{width:40px;height:1.5px;background:var(--cream);margin:0 4px;border-radius:1px}
.progress-line.done{background:var(--caramel)}

/* ============ DASHBOARD ============ */
.dashboard{max-width:460px;margin:0 auto;padding:20px}
.dash-header{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.dash-avatar{
  width:46px;height:46px;border-radius:var(--radius-sm);
  background:rgba(184,120,64,0.08);display:flex;align-items:center;justify-content:center;
}
.dash-info h3{font-size:0.95rem;font-weight:600}
.dash-info p{font-size:0.76rem;color:#A09080}
.stat-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:18px}
.stat-card{
  background:var(--white);border:1px solid var(--cream);border-radius:var(--radius-sm);
  padding:16px 8px;text-align:center;box-shadow:var(--shadow-sm);transition:all 0.2s;
}
.stat-card:hover{box-shadow:var(--shadow)}
.stat-card .stat-num{font-size:1.3rem;font-weight:650;color:var(--ink)}
.stat-card .stat-label{font-size:0.7rem;color:#A09080;margin-top:3px}
.section-card{
  background:var(--white);border:1px solid var(--cream);
  border-radius:var(--radius);padding:20px;margin-bottom:12px;box-shadow:var(--shadow-sm);
}
.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.section-header h4{font-size:0.9rem;font-weight:600}

/* ============ PERSONA CARD ============ */
.persona-card{
  display:flex;align-items:center;gap:12px;padding:14px;
  background:var(--rice);border:1px solid var(--cream);
  border-radius:var(--radius-sm);margin-bottom:6px;transition:all 0.2s;
}
.persona-card:hover{background:var(--white);border-color:var(--caramel)}
.persona-card .pc-icon{
  width:40px;height:40px;border-radius:var(--radius-xs);
  background:rgba(184,120,64,0.08);display:flex;align-items:center;justify-content:center;
}
.persona-card .pc-info{flex:1;min-width:0}
.persona-card .pc-info h5{font-size:0.85rem;font-weight:580;margin-bottom:2px}
.persona-card .pc-info span{font-size:0.72rem;color:#A09080}
.persona-card .pc-actions{display:flex;gap:6px;flex-shrink:0;flex-wrap:wrap}
@media(max-width:480px){
  .persona-card{flex-wrap:wrap}
  .persona-card .pc-info{flex:1 1 60%}
  .persona-card .pc-actions{flex:1 1 100%;margin-top:8px}
}

/* ============ QR ============ */
.qr-box{text-align:center;padding:20px}
.qr-img{
  width:180px;height:180px;background:var(--cream);border-radius:var(--radius);
  margin:0 auto 12px;display:flex;align-items:center;justify-content:center;
}

/* ============ ANNOUNCEMENT ============ */
.announce-bar{
  background:rgba(184,120,64,0.05);border:1px solid var(--cream);
  border-radius:var(--radius-sm);padding:14px 16px;display:flex;align-items:flex-start;gap:10px;
}
.announce-bar .ann-icon{flex-shrink:0;margin-top:1px}
.announce-bar p{font-size:0.82rem;color:var(--cocoa);line-height:1.55;font-weight:480}

/* ============ MODAL ============ */
.modal-overlay{
  position:fixed;inset:0;background:rgba(44,24,16,0.3);
  backdrop-filter:blur(4px);z-index:200;display:flex;align-items:flex-end;
  justify-content:center;animation:fadeIn 0.2s;
}
.modal-sheet{
  background:var(--white);border-radius:var(--radius-lg) var(--radius-lg) 0 0;
  padding:24px 20px 32px;width:100%;max-width:460px;max-height:85vh;
  overflow-y:auto;animation:slideUp 0.3s var(--ease-out);
}

/* ============ ADMIN ============ */
.admin-wrap{display:flex;min-height:100vh}
.admin-sidebar{
  width:200px;background:var(--white);border-right:1px solid var(--cream);
  padding:22px 16px;flex-shrink:0;display:none;
}
@media(min-width:768px){.admin-sidebar{display:flex;flex-direction:column}}
.admin-sidebar h3{font-size:0.95rem;margin-bottom:20px}
.admin-nav{display:flex;flex-direction:column;gap:2px}
.admin-nav a{
  display:block;padding:10px 14px;font-size:0.84rem;font-weight:500;color:var(--cocoa);
  border-radius:var(--radius-sm);transition:all 0.15s;
}
.admin-nav a:hover,.admin-nav a.active{background:rgba(184,120,64,0.08);color:var(--caramel);font-weight:540}
.admin-main{flex:1;padding:24px 20px;overflow-x:auto}
.admin-table{width:100%;border-collapse:collapse;font-size:0.8rem}
.admin-table th{text-align:left;padding:10px 14px;font-weight:560;border-bottom:1.5px solid var(--cream);color:var(--cocoa);font-size:0.78rem}
.admin-table td{padding:10px 14px;border-bottom:1px solid var(--cream);color:#6B5A4A;font-size:0.8rem}

/* ============ TOAST ============ */
.toast-container{position:fixed;top:20px;left:50%;transform:translateX(-50%);z-index:999;display:flex;flex-direction:column;gap:6px;pointer-events:none}
.toast{
  background:var(--ink);color:var(--warm);padding:10px 22px;
  border-radius:var(--radius-full);font-size:0.84rem;font-weight:520;
  box-shadow:0 6px 24px rgba(44,24,16,0.22);
  animation:toastIn 0.3s var(--ease);pointer-events:auto;
}
.toast.error{background:var(--danger)}.toast.success{background:var(--success)}

/* ============ TAGS ============ */
.tag{display:inline-block;padding:3px 10px;font-size:0.7rem;font-weight:540;border-radius:var(--radius-full)}
.tag-free{background:var(--cream);color:#8B6F5A}
.tag-paid{background:rgba(184,120,64,0.1);color:var(--caramel)}

/* ============ FOOTER ============ */
.footer{text-align:center;padding:28px 20px;font-size:0.76rem;color:#A09080;border-top:1px solid var(--cream)}
.footer a{color:#A09080}.footer a:hover{color:var(--cocoa)}

/* ============ DETAILS ============ */
details summary{cursor:pointer;list-style:none;font-size:0.84rem;font-weight:540;color:var(--cocoa);padding:8px 0}
details summary::-webkit-details-marker{display:none}
details summary::before{content:'▸ ';display:inline-block;transition:transform 0.2s;font-size:0.7em}
details[open] summary::before{transform:rotate(90deg)}

/* ============ EMPTY STATE ============ */
.empty-state{text-align:center;padding:36px 20px;color:#A09080}
.empty-state .empty-icon{font-size:2.2rem;margin-bottom:10px;opacity:0.4}
.empty-state p{font-size:0.86rem}

/* ============ UTILITY ============ */
.text-center{text-align:center}
.text-muted{color:#A09080}
.text-secondary{color:#8B6F5A}
.mt-8{margin-top:8px}.mt-16{margin-top:16px}.mt-24{margin-top:24px}
.mb-8{margin-bottom:8px}.mb-16{margin-bottom:16px}.mb-24{margin-bottom:24px}
.hidden{display:none!important}
.flex-center{display:flex;align-items:center;justify-content:center}
.gap-8{gap:8px}.gap-12{gap:12px}
.page-enter{animation:revealUp 0.45s var(--ease-out)}

/* ============ SKELETON ============ */
.skeleton{background:linear-gradient(90deg,var(--cream) 25%,var(--rice) 50%,var(--cream) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:var(--radius-sm)}

/* ============ MOBILE ============ */
@media(max-width:380px){
  h1{font-size:1.35rem}.hero h1{font-size:1.4rem}
  .features-grid{gap:8px}.stat-cards{gap:6px}
  .btn{padding:10px 18px;font-size:0.84rem}
  .btn-lg{padding:12px 24px;font-size:0.9rem}
  .price-card{flex-direction:column;align-items:flex-start;gap:8px}
  .price-left{display:flex;align-items:baseline;gap:8px}
  .price-amount{font-size:1.1rem}
}