/* ============================================================
   溝通學研所 Comm Academy — 共用樣式
   品牌色與字體為定案規格，請勿隨意更動
============================================================ */
:root{
  --navy:#0F172A;
  --gold:#D4AF37;
  --ivory:#F8FAFC;
  --muted:#94A3B8;
  --cta:#10B981;
  --cta-dark:#0E9F6E;
  --panel:#1E293B;
  --parchment:#F3EEE4;
  --slate:#475569;
  --divider:rgba(255,255,255,.08);
  --divider-light:#E3DCCB;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--navy);
  color:var(--ivory);
  font-family:'Noto Sans TC',sans-serif;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
.serif{font-family:'Noto Serif TC',serif}
::selection{background:var(--gold);color:var(--navy)}

/* ---------- 色彩工具類 ---------- */
.bg-navy{background:var(--navy)}
.bg-panel{background:var(--panel)}
.bg-parchment{background:var(--parchment);color:var(--slate)}
.text-gold{color:var(--gold)}
.text-ivory{color:var(--ivory)}
.text-muted{color:var(--muted)}
.text-slate{color:var(--slate)}
.text-navy{color:var(--navy)}

/* ---------- 導覽列 ---------- */
.site-nav{
  position:sticky;top:0;z-index:100;
  background:rgba(15,23,42,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(212,175,55,.18);
}
.nav-inner{
  max-width:1120px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  padding:.9rem 1.25rem;
}
.nav-logo{
  font-family:'Noto Serif TC',serif;font-weight:900;
  color:var(--gold);text-decoration:none;font-size:1.05rem;letter-spacing:.04em;
  white-space:nowrap;
}
.nav-logo span{font-size:.7rem;color:var(--muted);font-weight:400;letter-spacing:.12em;margin-left:.4rem}
.nav-links{display:flex;gap:1.4rem;list-style:none;margin:0;padding:0;align-items:center}
.nav-links a{
  color:var(--muted);text-decoration:none;font-size:.88rem;font-weight:500;
  padding:.3rem 0;border-bottom:2px solid transparent;transition:color .2s,border-color .2s;
  white-space:nowrap;
}
.nav-links a:hover{color:var(--gold)}
.nav-links a.active{color:var(--gold);border-bottom-color:var(--gold)}
.menu-btn{
  display:none;background:none;border:1px solid rgba(212,175,55,.4);
  color:var(--gold);border-radius:8px;padding:.4rem .7rem;font-size:1.05rem;cursor:pointer;
}
@media (max-width:960px){
  .menu-btn{display:block}
  .nav-links{
    display:none;position:absolute;top:100%;left:0;right:0;
    flex-direction:column;gap:0;background:var(--panel);
    border-bottom:1px solid rgba(212,175,55,.25);
    padding:.5rem 0;
  }
  .nav-links.open{display:flex}
  .nav-links li{width:100%}
  .nav-links a{display:block;padding:.85rem 1.5rem;border-bottom:none}
  .nav-links a.active{background:rgba(212,175,55,.1)}
}

/* ---------- 版面節奏 ---------- */
.section{padding:5rem 1.25rem}
.section-inner{max-width:1120px;margin:0 auto}
.section-narrow{max-width:860px;margin:0 auto}
.eyebrow{
  color:var(--gold);font-size:.72rem;font-weight:700;
  letter-spacing:.28em;text-transform:uppercase;margin:0 0 .9rem;
}
.bg-parchment .eyebrow{color:#A8842B}
h1,h2,h3{font-family:'Noto Serif TC',serif;line-height:1.3;margin:0}
.h1{font-size:clamp(1.9rem,4.6vw,3.2rem);font-weight:900}
.h2{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:900}
.lead{color:var(--muted);font-size:1.02rem;max-width:640px}
.bg-parchment .lead{color:var(--slate)}
.gold-rule{height:1px;background:linear-gradient(90deg,var(--gold),transparent);margin:1.4rem 0}

/* ---------- 按鈕 ---------- */
.btn{
  display:inline-block;text-decoration:none;font-weight:700;font-size:.95rem;
  padding:.85rem 1.8rem;border-radius:10px;transition:all .2s;cursor:pointer;border:none;
  text-align:center;
}
.btn-cta{background:var(--cta);color:var(--navy)}
.btn-cta:hover{background:var(--cta-dark);transform:translateY(-1px)}
.btn-gold-outline{background:transparent;color:var(--gold);border:1px solid rgba(212,175,55,.55)}
.btn-gold-outline:hover{background:var(--gold);color:var(--navy)}
.btn-navy{background:var(--navy);color:var(--ivory)}
.btn-navy:hover{background:var(--panel)}
.btn:focus-visible{outline:3px solid var(--cta);outline-offset:2px}

/* ---------- 卡片 ---------- */
.card-dark{
  background:var(--panel);border:1px solid var(--divider);
  border-radius:16px;padding:1.8rem;transition:border-color .25s,transform .25s;
}
.card-dark:hover{border-color:rgba(212,175,55,.45);transform:translateY(-3px)}
.card-light{
  background:#FFFDF8;border:1px solid var(--divider-light);
  border-radius:16px;padding:1.8rem;color:var(--slate);
  transition:border-color .25s,transform .25s,box-shadow .25s;
}
.card-light:hover{border-color:var(--gold);transform:translateY(-3px);box-shadow:0 10px 32px rgba(15,23,42,.08)}
.card-light h3{color:var(--navy)}
.price{font-family:'Noto Serif TC',serif;font-weight:900;font-size:1.9rem;color:var(--gold)}
.card-light .price{color:#A8842B}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-block;font-size:.68rem;font-weight:700;letter-spacing:.08em;
  padding:.25rem .7rem;border-radius:999px;margin-bottom:.7rem;
}
.badge-gold{background:rgba(212,175,55,.16);color:var(--gold);border:1px solid rgba(212,175,55,.4)}
.badge-green{background:rgba(16,185,129,.14);color:var(--cta);border:1px solid rgba(16,185,129,.4)}
.badge-share{background:rgba(148,163,184,.14);color:var(--muted);border:1px solid rgba(148,163,184,.4)}
.badge-ext{background:rgba(139,110,199,.14);color:#B39DDB;border:1px solid rgba(139,110,199,.45)}
.badge-wait{background:rgba(148,163,184,.12);color:var(--muted);border:1px dashed rgba(148,163,184,.5)}
.card-light .badge-gold{background:rgba(168,132,43,.1);color:#A8842B;border-color:rgba(168,132,43,.4)}
.card-light .badge-share{background:rgba(71,85,105,.08);color:var(--slate);border-color:rgba(71,85,105,.3)}

/* ---------- 診斷器 ---------- */
.diag-option{cursor:pointer;display:block}
.diag-option input{position:absolute;opacity:0;pointer-events:none}
.diag-option span{
  display:block;border:1px solid rgba(255,255,255,.16);border-radius:10px;
  padding:.75rem 1rem;font-size:.9rem;color:var(--muted);transition:all .18s;
}
.diag-option:hover span{border-color:rgba(255,255,255,.4)}
.diag-option input:checked + span{
  border-color:var(--gold);background:rgba(212,175,55,.1);color:var(--gold);
}
.diag-option input:focus-visible + span{outline:3px solid var(--cta);outline-offset:2px}
.gauge-track{height:12px;background:rgba(255,255,255,.1);border-radius:999px;overflow:hidden}
.gauge-fill{
  height:100%;border-radius:999px;width:0;
  background:linear-gradient(90deg,var(--gold),var(--cta));
  transition:width 1.2s cubic-bezier(.2,.8,.2,1);
}

/* ---------- 定錨成局框架 ---------- */
.framework-char{
  font-family:'Noto Serif TC',serif;font-weight:900;
  font-size:3.2rem;color:var(--gold);line-height:1;
}

/* ---------- 時間軸（關於我） ---------- */
.timeline{position:relative;padding-left:0}
.timeline::before{
  content:'';position:absolute;left:50%;top:0;bottom:0;width:1px;
  background:linear-gradient(180deg,transparent,rgba(212,175,55,.5) 8%,rgba(212,175,55,.5) 92%,transparent);
  transform:translateX(-50%);
}
.tl-item{
  display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center;
  margin-bottom:4.5rem;position:relative;
}
.tl-item::after{
  content:'';position:absolute;left:50%;top:50%;width:12px;height:12px;
  background:var(--gold);border-radius:50%;transform:translate(-50%,-50%);
  box-shadow:0 0 0 5px rgba(212,175,55,.18);
}
.tl-photo{
  aspect-ratio:4/3;border-radius:14px;overflow:hidden;
  background:linear-gradient(135deg,var(--panel),#25334A);
  border:1px solid rgba(212,175,55,.25);
  display:flex;align-items:center;justify-content:center;
  color:var(--muted);font-size:.8rem;letter-spacing:.1em;
}
.tl-photo img{width:100%;height:100%;object-fit:cover}
.tl-text .tl-year{color:var(--gold);font-size:.78rem;font-weight:700;letter-spacing:.2em}
.tl-text h3{font-size:1.25rem;margin:.4rem 0 .6rem;color:var(--ivory)}
.tl-text p{color:var(--muted);font-size:.93rem;margin:0}
.tl-item:nth-child(even) .tl-photo{order:2}
.tl-item:nth-child(even) .tl-text{order:1;text-align:right}
@media (max-width:820px){
  .timeline::before{left:8px}
  .tl-item{grid-template-columns:1fr;gap:1.1rem;padding-left:2rem;margin-bottom:3rem}
  .tl-item::after{left:8px;top:12px;transform:translate(-50%,0)}
  .tl-item:nth-child(even) .tl-photo{order:1}
  .tl-item:nth-child(even) .tl-text{order:2;text-align:left}
}

/* ---------- 手風琴 ---------- */
.accordion{border:1px solid var(--divider);border-radius:14px;overflow:hidden}
.accordion summary{
  cursor:pointer;list-style:none;padding:1.1rem 1.4rem;
  font-family:'Noto Serif TC',serif;font-weight:700;color:var(--ivory);
  display:flex;justify-content:space-between;align-items:center;background:var(--panel);
}
.accordion summary::-webkit-details-marker{display:none}
.accordion summary::after{content:'＋';color:var(--gold);font-size:1.1rem}
.accordion[open] summary::after{content:'－'}
.accordion .acc-body{padding:1.2rem 1.4rem;color:var(--muted);font-size:.93rem;border-top:1px solid var(--divider)}

/* ---------- 表單 ---------- */
.field label{display:block;font-size:.85rem;font-weight:700;color:var(--ivory);margin-bottom:.4rem}
.field label .req{color:var(--cta)}
.field input[type=text],.field input[type=email],.field input[type=tel],
.field textarea,.field select{
  width:100%;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.18);
  border-radius:10px;padding:.75rem 1rem;color:var(--ivory);font-family:inherit;font-size:.95rem;
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--gold)}
.check-item{display:flex;align-items:center;gap:.55rem;font-size:.9rem;color:var(--muted);cursor:pointer}
.check-item input{accent-color:var(--cta);width:1.05rem;height:1.05rem}

/* ---------- 頁尾 ---------- */
.site-footer{border-top:1px solid rgba(212,175,55,.15);background:var(--navy)}
.footer-inner{
  max-width:1120px;margin:0 auto;padding:2.6rem 1.25rem;
  display:flex;flex-wrap:wrap;gap:1.6rem;justify-content:space-between;align-items:flex-start;
  color:var(--muted);font-size:.85rem;
}
.footer-inner a{color:var(--muted);text-decoration:none}
.footer-inner a:hover{color:var(--gold)}
.footer-brand{font-family:'Noto Serif TC',serif;font-weight:900;color:var(--gold);font-size:1rem}

/* ---------- 動畫 ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.8,.2,1)}
.reveal.visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .gauge-fill{transition:none}
}