/* ============================================================
   百冠音乐 · 王涛吉他工作室
   视觉系统：墨林流金 (Deep Forest & Antique Gold)
   —— 深林墨绿 · 古典金 · 暖象牙白 · 近黑戏剧暗区
   说明：完整重写视觉层。保留全部原有 class 名与 CSS 变量名，
        仅升级取值与质感，确保所有页面 / 内联样式 / PHP 后台
        逻辑与功能 100% 不受影响。
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,500;0,600;0,700;1,500&family=ZCOOL+XiaoWei&family=Noto+Serif+SC:wght@400;500;600;700;900&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

:root {
  /* —— 背景 / 纸面 —— */
  --bg:        #f6f2e9;   /* 暖象牙纸 */
  --bg-alt:    #efe8d9;   /* 暖砂（交替区） */
  --bg-white:  #fffdf8;   /* 暖白（卡片） */
  --cream:     #faf6ee;

  /* —— 描边 —— */
  --border:    #e2dac6;
  --border-s:  #ece5d6;

  /* —— 文字 —— */
  --text:      #1a251f;   /* 深墨（带绿调） */
  --soft:      #3d4c41;
  --muted:     #8b9285;

  /* —— 主色：深林墨绿 —— */
  --green:     #1f4034;
  --green-d:   #163127;   /* hover 更深 */
  --green-m:   #3a6650;
  --green-p:   #c6d6c2;   /* 淡哑沙绿 */

  /* —— 点缀：古典金（呼应狮王徽章） —— */
  --gold:        #b0883c;
  --gold-d:      #97712f;
  --gold-bright: #d0a85a;  /* 暗底上的亮金 */
  --gold-p:      #e7d3a1;

  --bark:      #6f4c2d;   /* 暖棕（媒体色等沿用） */

  /* —— 近黑暗区（页脚 / 戏剧化板块） —— */
  --ink:       #112019;
  --ink-2:     #0c1812;

  /* —— 尺寸 —— */
  --max:    1180px;
  --r:      18px;
  --r-sm:   12px;
  --r-lg:   26px;

  /* —— 阴影（柔和分层） —— */
  --shadow-sm: 0 2px 10px rgba(26,37,31,.05);
  --shadow:    0 12px 38px rgba(26,37,31,.10);
  --shadow-lg: 0 26px 70px rgba(26,37,31,.16);
  --shadow-gold: 0 12px 32px rgba(176,136,60,.22);

  /* —— 字体 —— */
  --font-sans:    'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-serif:   'Noto Serif SC',serif;
  --font-display: 'Cormorant Garamond','Noto Serif SC',serif; /* 拉丁/数字优雅衬线 */
  --font-brand:   'ZCOOL XiaoWei','Noto Serif SC',serif;

  --ease: cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after { box-sizing:border-box; margin:0; padding:0; }
html { scroll-behavior:smooth; font-size:16px; -webkit-text-size-adjust:100%; }
body {
  font-family:var(--font-sans);
  background:var(--bg);
  color:var(--text);
  line-height:1.8;
  min-height:100vh;
  position:relative;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
/* 极淡纸张颗粒 + 顶部暖光，营造温润质感 */
body::before {
  content:''; position:fixed; inset:0; z-index:-3; pointer-events:none;
  background:
    radial-gradient(1200px 520px at 78% -8%, rgba(176,136,60,.07), transparent 60%),
    radial-gradient(900px 500px at -10% 4%, rgba(31,64,52,.05), transparent 55%);
}
body::after {
  content:''; position:fixed; inset:0; z-index:-2; pointer-events:none; opacity:.5;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.035'/%3E%3C/svg%3E");
}
a { color:inherit; text-decoration:none; }
img { max-width:100%; display:block; }
::selection { background:rgba(176,136,60,.28); color:var(--text); }

/* 细致滚动条 */
* { scrollbar-width:thin; scrollbar-color:var(--green-p) transparent; }
*::-webkit-scrollbar { width:10px; height:10px; }
*::-webkit-scrollbar-thumb { background:var(--green-p); border-radius:99px; border:2px solid var(--bg); }
*::-webkit-scrollbar-thumb:hover { background:var(--green-m); }

:focus-visible { outline:2px solid var(--gold); outline-offset:3px; border-radius:4px; }

/* ── Container ── */
.container { width:min(calc(100% - 48px),var(--max)); margin:0 auto; }

/* 通用：金色细分隔线工具 */
.gold-rule { height:1px; background:linear-gradient(90deg,transparent,var(--gold),transparent); opacity:.5; border:none; }

/* ══════════════════════════════════════
   HEADER / NAV
══════════════════════════════════════ */
.site-header {
  position:sticky; top:0; z-index:100;
  background:linear-gradient(180deg, rgba(248,245,238,.95), rgba(246,242,233,.86));
  backdrop-filter:blur(16px) saturate(1.1);
  -webkit-backdrop-filter:blur(16px) saturate(1.1);
  border-bottom:1px solid var(--border);
  box-shadow:0 1px 0 rgba(255,255,255,.6) inset;
}
.site-header::after {
  content:''; position:absolute; left:0; right:0; bottom:-1px; height:1px;
  background:linear-gradient(90deg,transparent,rgba(176,136,60,.55),transparent);
}
.nav-wrap {
  display:flex; align-items:center;
  height:76px; gap:20px;
}
.brand {
  display:flex; align-items:center; gap:13px; flex-shrink:0;
}
.brand img { transition:transform .4s var(--ease); }
.brand:hover img { transform:scale(1.05) rotate(-1deg); }
.brand-mark {
  width:44px; height:44px; border-radius:13px;
  background:
    radial-gradient(circle at 32% 28%, #e7c878, #b0883c 55%, #8a661f);
  display:flex; align-items:center; justify-content:center;
  color:#fff8e6; font-size:20px;
  flex-shrink:0;
  box-shadow:0 4px 14px rgba(176,136,60,.4), inset 0 1px 1px rgba(255,255,255,.5);
}
.brand-name {
  font-family:var(--font-brand);
  font-size:1.3rem; color:var(--text); letter-spacing:.08em;
  line-height:1.1;
}
.brand-sub {
  font-size:.78rem; color:var(--muted);
  letter-spacing:0;          /* 去掉字间距 · 左边缘与"百"严丝对齐 */
  text-transform:uppercase;
  font-weight:500;
  margin-top:3px;
  font-variant-numeric:tabular-nums;
}

.nav-links {
  display:flex; align-items:center; gap:2px;
  margin-left:auto;
}
.nav-links a, .nav-item > .nav-top {
  position:relative;
  display:inline-block;
  padding:8px 15px; border-radius:9px;
  font-size:.93rem; color:var(--soft); font-weight:500;
  transition:color .22s var(--ease);
  white-space:nowrap;
}
/* 长菜单项（如"感受律动少儿吉他教学体系"）：紧凑字号 + 允许 2 行 */
.nav-item > .nav-top.nav-top-long {
  font-size:.78rem; letter-spacing:0; line-height:1.25;
  padding:6px 11px; white-space:normal; text-align:center; max-width:138px;
}
.nav-item > .nav-top.nav-top-long::before { display:none; }
.nav-item > .nav-top.nav-top-long::after { display:none; }

/* ══════════════════════════════════════
   大厅全屏密码门（hall.html / hall-scale.html）
══════════════════════════════════════ */
.hall-gate{position:fixed;inset:0;background:linear-gradient(135deg,#1f4034 0%,#2d5544 60%,#3a6e58 100%);display:flex;align-items:center;justify-content:center;z-index:9000;padding:24px;animation:hgFade .35s ease}
@keyframes hgFade{from{opacity:0}to{opacity:1}}
.hall-gate .hg-card{max-width:420px;width:100%;background:#fff;border-radius:18px;padding:42px 32px;text-align:center;box-shadow:0 30px 80px rgba(0,0,0,.4)}
.hall-gate .hg-icon{font-size:2.6rem;margin-bottom:10px;display:block}
.hall-gate h2{font-family:'Noto Serif SC',serif;color:var(--green);font-size:1.45rem;margin-bottom:8px}
.hall-gate .hg-sub{color:var(--soft);font-size:.92rem;line-height:1.7;margin-bottom:22px}
.hall-gate input{width:100%;padding:14px 16px;border:1px solid var(--border-s);border-radius:10px;font-size:1.05rem;text-align:center;letter-spacing:.06em;outline:none;font-family:inherit;box-sizing:border-box;background:#fff;color:var(--text)}
.hall-gate input:focus{border-color:var(--gold)}
.hall-gate button{width:100%;margin-top:12px;padding:14px;border:none;border-radius:10px;background:var(--green);color:#fff;font-size:1rem;font-weight:600;letter-spacing:.06em;cursor:pointer;transition:.2s}
.hall-gate button:hover{background:#1a3329}
.hall-gate .hg-err{color:#c0392b;font-size:.88rem;margin-top:10px;min-height:1.2em}
.hall-gate .hg-back{display:inline-block;margin-top:18px;color:var(--muted);font-size:.85rem;text-decoration:none}
.hall-gate .hg-back:hover{color:var(--green)}
@media(max-width:480px){.hall-gate .hg-card{padding:34px 22px}}
/* 金色下划线滑入 */
.nav-links > a::after, .nav-item > .nav-top::after {
  content:''; position:absolute; left:15px; right:15px; bottom:3px; height:1.5px;
  background:linear-gradient(90deg,var(--gold),var(--gold-bright));
  transform:scaleX(0); transform-origin:left; opacity:0;
  transition:transform .3s var(--ease), opacity .3s var(--ease);
}
.nav-links > a:hover::after,
.nav-links > a.active::after,
.nav-item:hover > .nav-top::after,
.nav-item.active > .nav-top::after { transform:scaleX(1); opacity:1; }
.nav-links a:hover, .nav-item:hover > .nav-top,
.nav-links a.active, .nav-item.active > .nav-top { color:var(--green); }

/* 让按钮型 nav 链接（预约试听）不显示下划线，并保持按钮自身文字色 */
.nav-links a.btn::after { display:none; }
.nav-links a.btn-primary, .nav-links a.btn-gold { color:#f6f2e6; }
.nav-links a.btn-primary:hover, .nav-links a.btn-gold:hover { color:#fff; }
.nav-links a.btn-outline { color:var(--green); }
.nav-links a.btn-outline:hover { color:#f6f2e6; }

/* Dropdown */
.nav-item { position:relative; }
.nav-top { cursor:pointer; user-select:none; }
.nav-top::before { content:'▾'; font-size:.62rem; margin-right:5px; opacity:.5; vertical-align:middle; }
.dropdown {
  position:absolute; top:calc(100% + 12px); left:50%; transform:translateX(-50%) translateY(8px);
  min-width:186px;
  background:var(--bg-white);
  border:1px solid var(--border);
  border-radius:14px;
  box-shadow:var(--shadow-lg);
  padding:8px;
  opacity:0; visibility:hidden;
  transition:opacity .26s var(--ease), transform .26s var(--ease), visibility .26s;
  z-index:200;
}
.dropdown::before {
  content:''; position:absolute; top:-6px; left:50%; transform:translateX(-50%) rotate(45deg);
  width:12px; height:12px; background:var(--bg-white);
  border-left:1px solid var(--border); border-top:1px solid var(--border);
}
.dropdown::after {
  content:''; position:absolute; left:0; right:0; top:0; height:2px;
  background:linear-gradient(90deg,transparent,var(--gold),transparent);
  border-radius:14px 14px 0 0;
}
.nav-item:hover .dropdown, .nav-item:focus-within .dropdown {
  opacity:1; visibility:visible; transform:translateX(-50%) translateY(0);
}
.dropdown a {
  display:block; padding:10px 15px; border-radius:9px;
  font-size:.9rem; color:var(--soft); font-weight:500;
  transition:background .18s, color .18s, padding .18s;
}
.dropdown a::after { display:none; }
.dropdown a:hover, .dropdown a.active {
  background:linear-gradient(90deg, rgba(31,64,52,.08), rgba(176,136,60,.06));
  color:var(--green); padding-left:19px;
}

/* Burger */
.burger {
  display:none; flex-direction:column; justify-content:center;
  align-items:center; gap:5px;
  width:44px; height:44px; border-radius:12px;
  background:var(--bg-white); border:1px solid var(--border);
  cursor:pointer; margin-left:auto; flex-shrink:0;
  box-shadow:var(--shadow-sm);
}
.burger span {
  display:block; width:19px; height:1.6px;
  background:var(--text); border-radius:2px;
  transition:transform .28s var(--ease), opacity .2s;
}
.burger.open span:nth-child(1) { transform:translateY(6.6px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity:0; }
.burger.open span:nth-child(3) { transform:translateY(-6.6px) rotate(-45deg); }

/* ══════════════════════════════════════
   HERO
══════════════════════════════════════ */
.hero {
  position:relative; overflow:hidden; isolation:isolate;
  min-height:620px;
  display:flex; align-items:center;
  padding:104px 0 88px;
}
.hero::before {
  content:''; position:absolute; inset:0; z-index:-2;
  background-image:url('assets/bg/hero-camp.jpg');
  background-size:cover; background-position:center 40%;
  opacity:.82;                                  /* 原 .42 · 大幅提高显示度 */
  filter:blur(2px) saturate(1.14) brightness(.82) contrast(1.05) sepia(.18);  /* 虚化 + 高级感染色 */
  -webkit-mask-image:linear-gradient(95deg, transparent 0%, rgba(0,0,0,.55) 22%, #000 48%, #000 100%);
  mask-image:linear-gradient(95deg, transparent 0%, rgba(0,0,0,.55) 22%, #000 48%, #000 100%);
}
.hero::after {
  content:''; position:absolute; inset:0; z-index:-1;
  background:
    /* 左侧渐变：保证 hero 文字可读 */
    linear-gradient(95deg, var(--bg) 0%, rgba(246,242,233,.92) 25%, rgba(246,242,233,.5) 44%, transparent 70%),
    /* 右下暗角：电影感 */
    radial-gradient(120% 90% at 85% 100%, rgba(17,32,25,.28), transparent 55%),
    /* 整体微弱暖紫色调 · 高档录音棚氛围 */
    linear-gradient(135deg, transparent 50%, rgba(120,60,110,.06) 100%);
}
.hero-content { max-width:640px; position:relative; }
.hero-content > * { opacity:0; transform:translateY(18px); animation:heroIn .9s var(--ease) forwards; }
.hero-content > *:nth-child(1){ animation-delay:.05s; }
.hero-content > *:nth-child(2){ animation-delay:.16s; }
.hero-content > *:nth-child(3){ animation-delay:.27s; }
.hero-content > *:nth-child(4){ animation-delay:.38s; }
@keyframes heroIn { to { opacity:1; transform:none; } }

.hero-eyebrow {
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--font-display);
  font-size:1.02rem; letter-spacing:.22em;
  color:var(--gold-d); text-transform:uppercase; font-weight:600;
  margin-bottom:22px;
  padding:6px 18px 6px 16px; border-radius:99px;
  background:rgba(255,253,248,.6);
  border:1px solid rgba(176,136,60,.35);
  box-shadow:var(--shadow-sm);
}
.hero-eyebrow::before {
  content:''; width:18px; height:1.5px; background:var(--gold); opacity:.8;
}
.hero h1 {
  font-family:var(--font-serif);
  font-size:clamp(2.5rem,5.4vw,4rem);
  font-weight:700; line-height:1.14; margin-bottom:24px;
  color:var(--text); letter-spacing:.01em;
}
.hero h1 em {
  font-style:normal;
  color:var(--green);
  position:relative;
  background:linear-gradient(180deg, transparent 68%, rgba(176,136,60,.28) 68%);
}
.hero-lead {
  font-size:1.08rem; color:var(--soft);
  line-height:1.95; margin-bottom:38px; max-width:520px;
}
.hero-btns { display:flex; flex-wrap:wrap; gap:14px; }

/* ════════ 版块品牌徽章 hero（每个版块大图 logo 区） ════════ */
.brand-hero{
  padding:40px 20px 36px;
  display:flex;justify-content:center;align-items:center;
  border-bottom:1px solid var(--border-s);
  position:relative;overflow:hidden;
}
.brand-hero img{
  max-width:340px;width:100%;height:auto;display:block;
  filter:drop-shadow(0 8px 22px rgba(0,0,0,.18));
  transition:transform .4s var(--ease);
}
.brand-hero:hover img{transform:scale(1.03)}
/* 浅色版（studio 狮子卡通用） */
.brand-hero.cream{background:radial-gradient(ellipse at 50% 30%, #faf4dd 0%, #f1ead0 100%)}
/* 深色版（shanyin/records/hope 金色 logo 用） */
.brand-hero.dark{background:radial-gradient(ellipse at 50% 30%, #2a2522 0%, #18130f 100%)}
.brand-hero.dark::before{
  content:'';position:absolute;inset:0;
  background:
    radial-gradient(circle at 18% 70%, rgba(184,144,72,.10), transparent 50%),
    radial-gradient(circle at 82% 30%, rgba(184,144,72,.08), transparent 55%);
  pointer-events:none;
}
@media(max-width:680px){
  .brand-hero{padding:30px 16px 26px}
  .brand-hero img{max-width:240px}
}

/* Page hero (inner pages) */
.page-hero {
  padding:88px 0 64px;
  border-bottom:1px solid var(--border-s);
  background:
    linear-gradient(160deg, var(--bg-alt) 0%, var(--bg) 64%);
  position:relative; overflow:hidden;
}
.page-hero::before {
  content:''; position:absolute; right:-80px; top:-120px;
  width:480px; height:480px; border-radius:50%;
  background:radial-gradient(circle, rgba(176,136,60,.10), transparent 68%);
  pointer-events:none;
}
.page-hero::after {
  content:''; position:absolute; left:0; right:0; bottom:0; height:1px;
  background:linear-gradient(90deg,transparent,rgba(176,136,60,.4),transparent);
}
.page-hero > .container { position:relative; }
.page-hero .crumb {
  font-size:.84rem; color:var(--muted); margin-bottom:16px; letter-spacing:.02em;
}
.page-hero .crumb a { color:var(--green-m); transition:color .2s; }
.page-hero .crumb a:hover { color:var(--gold-d); }
.page-hero h1 {
  font-family:var(--font-serif);
  font-size:clamp(2rem,4.2vw,3rem); font-weight:700;
  margin-bottom:16px; color:var(--text); letter-spacing:.01em;
  position:relative; display:inline-block;
}
.page-hero h1::after {
  content:''; position:absolute; left:0; bottom:-10px; width:64px; height:3px;
  background:linear-gradient(90deg,var(--gold),var(--gold-bright)); border-radius:99px;
}
.page-hero .lead {
  font-size:1.02rem; color:var(--soft); max-width:660px; line-height:1.85; margin-top:18px;
}

/* ══════════════════════════════════════
   BUTTONS
══════════════════════════════════════ */
.btn {
  display:inline-flex; align-items:center; gap:9px;
  padding:13px 28px; border-radius:11px;
  font-size:.95rem; font-weight:500; letter-spacing:.02em;
  transition:transform .25s var(--ease), box-shadow .25s var(--ease), background .25s;
  cursor:pointer; border:none;
  font-family:inherit; position:relative; overflow:hidden;
}
.btn-primary {
  background:linear-gradient(135deg, var(--green-m) 0%, var(--green) 60%, var(--green-d) 100%);
  color:#f6f2e6;
  box-shadow:0 6px 20px rgba(31,64,52,.28), inset 0 1px 0 rgba(255,255,255,.12);
}
.btn-primary:hover { box-shadow:0 12px 30px rgba(31,64,52,.36); transform:translateY(-2px); }
.btn-primary:active { transform:translateY(0); }
.btn-outline {
  background:rgba(255,253,248,.4); color:var(--green);
  border:1.5px solid rgba(31,64,52,.4);
  backdrop-filter:blur(4px);
}
.btn-outline:hover { background:var(--green); color:#f6f2e6; border-color:var(--green); transform:translateY(-2px); box-shadow:0 10px 26px rgba(31,64,52,.25); }
.btn-gold {
  background:linear-gradient(135deg, #e2c275 0%, var(--gold) 52%, var(--gold-d) 100%);
  color:#fff8ea;
  box-shadow:var(--shadow-gold), inset 0 1px 0 rgba(255,255,255,.3);
}
.btn-gold:hover { transform:translateY(-2px); box-shadow:0 16px 36px rgba(176,136,60,.34); }

/* ══════════════════════════════════════
   SECTIONS
══════════════════════════════════════ */
.section { padding:88px 0; }
.section-alt {
  background:var(--bg-alt);
  position:relative;
}
.section-alt::before, .section-alt::after {
  content:''; position:absolute; left:0; right:0; height:1px;
  background:linear-gradient(90deg,transparent,rgba(176,136,60,.28),transparent);
}
.section-alt::before { top:0; }
.section-alt::after { bottom:0; }

.section-head { margin-bottom:52px; }
.section-head .tag {
  display:inline-flex; align-items:center; gap:8px;
  font-size:.74rem; letter-spacing:.2em;
  text-transform:uppercase; color:var(--gold-d); font-weight:600;
  background:rgba(176,136,60,.10); border-radius:99px;
  padding:5px 16px; margin-bottom:18px;
  border:1px solid rgba(176,136,60,.28);
}
.section-head .tag::before { content:''; width:14px; height:1.5px; background:var(--gold); }
.section-head h2 {
  font-family:var(--font-serif);
  font-size:clamp(1.7rem,3.2vw,2.5rem); font-weight:700;
  color:var(--text); line-height:1.32; margin-bottom:14px; letter-spacing:.01em;
}
.section-head p { color:var(--soft); max-width:600px; font-size:1.01rem; }
.section-head.center { text-align:center; }
.section-head.center .tag { margin-left:auto; margin-right:auto; }
.section-head.center p { margin:0 auto; }

/* Divider leaf */
.divider {
  text-align:center; padding:14px 0; color:var(--gold);
  font-size:1rem; letter-spacing:.6rem; opacity:.55;
  user-select:none;
}

/* ══════════════════════════════════════
   CARDS
══════════════════════════════════════ */
.card {
  background:var(--bg-white);
  border:1px solid var(--border-s);
  border-radius:var(--r);
  padding:32px;
  position:relative; overflow:hidden;
  transition:transform .32s var(--ease), box-shadow .32s var(--ease), border-color .32s;
  box-shadow:var(--shadow-sm);
}
.card:hover { transform:translateY(-5px); box-shadow:var(--shadow-lg); border-color:var(--border); }
.card::before {
  content:''; position:absolute; top:0; left:0; right:0; height:3px;
  background:linear-gradient(90deg, var(--green-p), var(--gold-p));
  transform:scaleX(0); transform-origin:left;
  transition:transform .4s var(--ease);
}
.card:hover::before { transform:scaleX(1); }
.card-num {
  font-family:var(--font-display); font-size:3rem; font-weight:600;
  color:var(--green); margin-bottom:4px; line-height:1;
}
.card-icon {
  font-size:1.5rem; margin-bottom:18px;
  width:58px; height:58px; border-radius:16px;
  display:flex; align-items:center; justify-content:center;
  background:linear-gradient(150deg, rgba(31,64,52,.08), rgba(176,136,60,.10));
  border:1px solid rgba(176,136,60,.2);
  box-shadow:inset 0 1px 2px rgba(255,255,255,.6);
  transition:transform .32s var(--ease);
}
.card:hover .card-icon { transform:scale(1.06) rotate(-3deg); }
.card h3 { font-family:var(--font-serif); font-size:1.2rem; font-weight:600; margin-bottom:11px; color:var(--text); letter-spacing:.01em; }
.card h4 { font-size:1rem; font-weight:500; margin-bottom:8px; color:var(--text); }
.card p { color:var(--soft); font-size:.95rem; line-height:1.8; }

/* Grid */
.grid-2 { display:grid; grid-template-columns:repeat(2,1fr); gap:22px; }
.grid-3 { display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.grid-4 { display:grid; grid-template-columns:repeat(4,1fr); gap:22px; }

/* ══════════════════════════════════════
   STATS ROW
══════════════════════════════════════ */
.stats-row {
  display:flex; gap:0;
  background:linear-gradient(135deg, var(--green) 0%, var(--green-d) 100%);
  border-radius:var(--r-lg);
  overflow:hidden;
  position:relative;
  box-shadow:var(--shadow);
}
.stats-row::before {
  content:''; position:absolute; inset:0;
  background:radial-gradient(120% 140% at 50% -20%, rgba(176,136,60,.22), transparent 55%);
  pointer-events:none;
}
.stats-row::after {
  content:''; position:absolute; left:0; right:0; top:0; height:2px;
  background:linear-gradient(90deg,transparent,var(--gold-bright),transparent);
}
.stat-box {
  flex:1; padding:36px 22px; text-align:center;
  border-right:1px solid rgba(255,255,255,.1);
  position:relative; z-index:1;
}
.stat-box:last-child { border-right:none; }
.stat-box strong {
  display:block;
  font-family:var(--font-serif);
  font-size:2.5rem; font-weight:700; color:#fff; line-height:1;
  margin-bottom:9px;
  text-shadow:0 2px 14px rgba(0,0,0,.18);
}
.stat-box strong em { font-style:normal; color:var(--gold-bright); }
.stat-box span { font-size:.9rem; color:rgba(255,255,255,.72); letter-spacing:.04em; }

/* ══════════════════════════════════════
   PRICING TABLE
══════════════════════════════════════ */
.pricing-grid {
  display:grid; grid-template-columns:repeat(4,1fr); gap:20px;
}
.price-card {
  background:var(--bg-white);
  border:1px solid var(--border);
  border-radius:var(--r);
  padding:34px 24px;
  text-align:center;
  transition:transform .32s var(--ease), box-shadow .32s var(--ease), border-color .32s;
  position:relative;
  box-shadow:var(--shadow-sm);
}
.price-card:hover { border-color:var(--gold); transform:translateY(-6px); box-shadow:var(--shadow-lg); }
.price-card.featured {
  border:1.5px solid var(--gold);
  box-shadow:0 18px 50px rgba(176,136,60,.2);
  background:linear-gradient(180deg, #fffdf6, var(--bg-white));
}
.price-card.featured::before {
  content:'推荐'; position:absolute; top:-1px; left:50%; transform:translateX(-50%);
  background:linear-gradient(135deg, var(--gold), var(--gold-d)); color:#fff8ea; font-size:.74rem; letter-spacing:.18em;
  padding:4px 20px; border-radius:0 0 10px 10px;
  box-shadow:0 4px 12px rgba(176,136,60,.3);
}
.price-icon {
  font-size:1.6rem; margin-bottom:14px;
  width:56px; height:56px; border-radius:50%;
  display:flex; align-items:center; justify-content:center; margin-inline:auto;
  background:linear-gradient(150deg, rgba(31,64,52,.07), rgba(176,136,60,.1));
  border:1px solid rgba(176,136,60,.22);
}
.price-name {
  font-family:var(--font-serif);
  font-size:1.16rem; font-weight:700; margin-bottom:6px; color:var(--text);
}
.price-sub { font-size:.84rem; color:var(--muted); margin-bottom:20px; }
.price-num {
  font-family:var(--font-display);
  font-size:2.1rem; font-weight:600; color:var(--green); margin-bottom:4px; line-height:1;
}
.price-unit { font-size:.8rem; color:var(--muted); margin-bottom:22px; }
.price-features { list-style:none; text-align:left; }
.price-features li {
  font-size:.88rem; color:var(--soft); padding:9px 0;
  border-bottom:1px solid var(--border-s);
  display:flex; align-items:flex-start; gap:9px;
}
.price-features li:last-child { border-bottom:none; }
.price-features li::before {
  content:'✦'; color:var(--gold); font-size:.8rem; flex-shrink:0; margin-top:3px;
}
.price-note {
  margin-top:30px; padding:22px 26px;
  background:linear-gradient(135deg, rgba(31,64,52,.05), rgba(176,136,60,.04));
  border-radius:var(--r-sm);
  border-left:3px solid var(--gold);
  font-size:.9rem; color:var(--soft); line-height:1.75;
}

/* ══════════════════════════════════════
   教研大厅 - RESEARCH HALL（暗区 · 金调）
══════════════════════════════════════ */
.hall-grid {
  display:grid; grid-template-columns:1fr 1fr; gap:32px; align-items:start;
}
.hall-features { display:grid; gap:16px; }
.hall-feat {
  display:flex; gap:16px; align-items:flex-start;
  padding:20px; background:var(--bg-white);
  border:1px solid var(--border-s); border-radius:var(--r-sm);
  box-shadow:var(--shadow-sm);
  transition:transform .28s var(--ease), box-shadow .28s var(--ease);
}
.hall-feat:hover { transform:translateX(4px); box-shadow:var(--shadow); }
.hall-feat-icon {
  width:48px; height:48px; border-radius:13px;
  background:linear-gradient(150deg, rgba(31,64,52,.1), rgba(176,136,60,.12));
  border:1px solid rgba(176,136,60,.22);
  display:flex; align-items:center; justify-content:center;
  font-size:1.4rem; flex-shrink:0;
}
.hall-feat h4 { font-size:1.02rem; font-weight:600; margin-bottom:5px; color:var(--text); }
.hall-feat p { font-size:.88rem; color:var(--soft); line-height:1.7; }
.hall-visual {
  background:linear-gradient(155deg, var(--ink) 0%, var(--ink-2) 100%);
  border-radius:var(--r); padding:36px;
  position:relative; overflow:hidden;
  min-height:340px; display:flex; flex-direction:column;
  justify-content:space-between;
  box-shadow:var(--shadow-lg);
  border:1px solid rgba(176,136,60,.18);
}
.hall-visual::before {
  content:''; position:absolute; inset:0;
  background:radial-gradient(circle at 28% 28%, rgba(176,136,60,.2), transparent 52%);
}
.hall-visual::after {
  content:''; position:absolute; left:0; right:0; top:0; height:1px;
  background:linear-gradient(90deg,transparent,var(--gold),transparent);
}
.hall-screen {
  background:rgba(255,255,255,.04); border:1px solid rgba(176,136,60,.18);
  border-radius:12px; padding:18px; margin-bottom:20px;
  position:relative; z-index:1;
  backdrop-filter:blur(2px);
}
.hall-screen-label { font-size:.72rem; color:rgba(208,168,90,.7); letter-spacing:.16em; margin-bottom:13px; text-transform:uppercase; }
.hall-dots { display:flex; gap:8px; flex-wrap:wrap; }
.hall-dot {
  width:34px; height:34px; border-radius:9px;
  background:rgba(176,136,60,.12); border:1px solid rgba(176,136,60,.3);
  display:flex; align-items:center; justify-content:center;
  font-size:.7rem; color:rgba(208,168,90,.8);
  transition:all .25s var(--ease);
}
.hall-dot.active {
  background:linear-gradient(150deg, rgba(176,136,60,.45), rgba(176,136,60,.25));
  border-color:var(--gold-bright);
  color:#f4dca0;
  box-shadow:0 0 14px rgba(176,136,60,.4);
}
.hall-keyboards {
  display:flex; gap:10px; position:relative; z-index:1;
}
.hall-key-card {
  flex:1; background:rgba(255,255,255,.04); border:1px solid rgba(176,136,60,.16);
  border-radius:10px; padding:12px 14px;
}
.hall-key-name { font-size:.72rem; color:rgba(255,255,255,.5); margin-bottom:5px; }
.hall-key-status { font-size:.8rem; color:rgba(208,168,90,.85); font-weight:500; }

/* ══════════════════════════════════════
   PROCESS STEPS
══════════════════════════════════════ */
.steps { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; position:relative; }
.steps::before {
  content:''; position:absolute; top:32px; left:10%; right:10%;
  height:2px; background:linear-gradient(90deg, var(--green-p), var(--gold-p), var(--green-p));
  opacity:.7;
}
.step { text-align:center; position:relative; }
.step-num {
  width:64px; height:64px; border-radius:50%;
  background:var(--bg-white); border:2px solid var(--gold-p);
  display:flex; align-items:center; justify-content:center;
  font-family:var(--font-display); font-size:1.3rem; font-weight:600;
  color:var(--gold-d); margin:0 auto 18px;
  position:relative; z-index:1;
  transition:all .3s var(--ease);
  box-shadow:var(--shadow-sm);
}
.step:hover .step-num {
  background:linear-gradient(150deg, var(--gold), var(--gold-d)); color:#fff8ea; border-color:var(--gold);
  transform:translateY(-3px); box-shadow:var(--shadow-gold);
}
.step h4 { font-size:1rem; font-weight:600; margin-bottom:7px; color:var(--text); }
.step p { font-size:.85rem; color:var(--muted); line-height:1.65; }

/* ══════════════════════════════════════
   TIMELINE
══════════════════════════════════════ */
.timeline { display:grid; gap:0; position:relative; }
.tl-item {
  display:grid; grid-template-columns:110px 1fr; gap:28px;
  padding:26px 0; border-bottom:1px solid var(--border-s);
  position:relative;
}
.tl-item:last-child { border-bottom:none; }
.tl-year {
  font-family:var(--font-display); font-size:1.4rem; font-weight:600; color:var(--gold-d); padding-top:2px;
  letter-spacing:.02em;
}
.tl-content h4 { font-size:1.05rem; font-weight:600; margin-bottom:5px; color:var(--text); }
.tl-content p { font-size:.92rem; color:var(--soft); line-height:1.75; }

/* ══════════════════════════════════════
   TABLE
══════════════════════════════════════ */
.table-wrap { border-radius:var(--r); overflow:hidden; border:1px solid var(--border); box-shadow:var(--shadow-sm); }
table { width:100%; border-collapse:collapse; background:var(--bg-white); }
th { background:linear-gradient(135deg, var(--green), var(--green-d)); color:#f6f2e6; padding:16px 20px; text-align:left; font-weight:500; font-size:.9rem; letter-spacing:.03em; }
td { padding:15px 20px; border-bottom:1px solid var(--border-s); font-size:.92rem; color:var(--soft); }
tr:last-child td { border-bottom:none; }
tr:hover td { background:rgba(176,136,60,.05); }

/* ══════════════════════════════════════
   FORM
══════════════════════════════════════ */
.form-grid { display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.form-full { grid-column:1/-1; }
.field { display:grid; gap:7px; }
.field label { font-size:.88rem; color:var(--green); font-weight:600; letter-spacing:.02em; }
.field input, .field select, .field textarea {
  padding:13px 17px; border-radius:11px;
  border:1.5px solid var(--border);
  background:var(--bg-white); color:var(--text);
  font:inherit; font-size:.95rem;
  transition:border-color .22s, box-shadow .22s;
}
.field input::placeholder, .field textarea::placeholder { color:var(--muted); }
.field input:focus, .field select:focus, .field textarea:focus {
  outline:none; border-color:var(--gold);
  box-shadow:0 0 0 4px rgba(176,136,60,.14);
}
.field textarea { min-height:120px; resize:vertical; }

/* ══════════════════════════════════════
   FAQ
══════════════════════════════════════ */
.faq { display:grid; gap:12px; }
.faq-item {
  background:var(--bg-white); border:1px solid var(--border-s);
  border-radius:var(--r-sm); overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:border-color .25s, box-shadow .25s;
}
.faq-item.open { border-color:rgba(176,136,60,.4); box-shadow:var(--shadow); }
.faq-q {
  padding:18px 22px; font-weight:600; font-size:.96rem;
  color:var(--text); cursor:pointer;
  display:flex; justify-content:space-between; align-items:center; gap:16px;
  user-select:none;
  transition:color .2s;
}
.faq-q:hover { color:var(--green); }
.faq-q::after { content:'＋'; color:var(--gold); font-size:1.2rem; transition:transform .3s var(--ease); flex-shrink:0; }
.faq-item.open .faq-q::after { transform:rotate(135deg); }
.faq-a {
  padding:0 22px; max-height:0; overflow:hidden;
  font-size:.92rem; color:var(--soft); line-height:1.8;
  transition:max-height .35s var(--ease), padding .35s var(--ease);
}
.faq-item.open .faq-a { padding:0 22px 18px; max-height:320px; }

/* ══════════════════════════════════════
   HIGHLIGHT BOX
══════════════════════════════════════ */
.highlight-box {
  background:linear-gradient(140deg, rgba(31,64,52,.07), rgba(176,136,60,.06));
  border:1px solid rgba(176,136,60,.22);
  border-radius:var(--r-lg); padding:40px;
  position:relative; overflow:hidden;
  box-shadow:var(--shadow-sm);
}
.highlight-box::before {
  content:''; position:absolute; right:-40px; top:-40px;
  width:200px; height:200px; border-radius:50%;
  background:radial-gradient(circle, rgba(176,136,60,.14), transparent 70%);
}
.highlight-box::after {
  content:'\201D'; position:absolute; left:24px; top:6px;
  font-family:var(--font-serif); font-size:5rem; color:rgba(176,136,60,.14); line-height:1;
}
.highlight-box h3 { font-family:var(--font-serif); font-size:1.4rem; font-weight:700; margin-bottom:13px; color:var(--green); position:relative; letter-spacing:.01em; }
.highlight-box p { color:var(--soft); line-height:1.85; position:relative; }

/* ══════════════════════════════════════
   FLOAT CTA
══════════════════════════════════════ */
.float-cta {
  position:fixed; right:24px; bottom:24px; z-index:90;
  display:flex; flex-direction:column; gap:12px;
}
.float-btn {
  width:56px; height:56px; border-radius:18px;
  background:linear-gradient(150deg, var(--green-m), var(--green-d));
  color:#f6f2e6;
  display:flex; align-items:center; justify-content:center;
  font-size:1.35rem; box-shadow:0 10px 26px rgba(31,64,52,.4);
  cursor:pointer; transition:transform .25s var(--ease), box-shadow .25s;
  border:1px solid rgba(176,136,60,.3);
  font-family:inherit;
}
.float-btn:hover { transform:scale(1.08) translateY(-2px); box-shadow:0 14px 34px rgba(31,64,52,.46); }
.float-panel {
  position:absolute; bottom:68px; right:0;
  width:212px; background:var(--bg-white);
  border:1px solid var(--border); border-radius:var(--r-sm);
  padding:18px; box-shadow:var(--shadow-lg);
  display:none;
}
.float-panel.show { display:block; animation:popIn .3s var(--ease); }
@keyframes popIn { from { opacity:0; transform:translateY(8px) scale(.97); } to { opacity:1; transform:none; } }
.float-panel p { font-size:.84rem; color:var(--soft); margin-bottom:12px; }
.qr-box {
  aspect-ratio:1; border-radius:12px;
  background:linear-gradient(135deg, var(--bg-alt), var(--cream));
  border:1px dashed var(--gold-p);
  display:flex; align-items:center; justify-content:center;
  font-size:.8rem; color:var(--muted); text-align:center; padding:12px;
}

/* ══════════════════════════════════════
   FOOTER（近黑暗区 · 金调）
══════════════════════════════════════ */
.site-footer {
  background:linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 100%);
  color:rgba(255,255,255,.8);
  padding:72px 0 0;
  position:relative;
}
.site-footer::before {
  content:''; position:absolute; left:0; right:0; top:0; height:2px;
  background:linear-gradient(90deg,transparent,var(--gold),transparent);
}
.footer-grid { display:grid; grid-template-columns:1.5fr 1fr 1fr 1.2fr; gap:40px; margin-bottom:48px; }
.footer-brand .brand-name { color:#fff; font-size:1.2rem; }
.footer-brand .brand-sub { color:var(--gold-bright); letter-spacing:.14em; }
.footer-brand p { font-size:.88rem; color:rgba(255,255,255,.55); line-height:1.8; margin-top:16px; }
.footer-col h4 {
  font-size:.82rem; letter-spacing:.16em; text-transform:uppercase;
  color:var(--gold-bright); margin-bottom:18px; font-weight:600;
  position:relative; padding-bottom:10px;
}
.footer-col h4::after { content:''; position:absolute; left:0; bottom:0; width:26px; height:1.5px; background:rgba(176,136,60,.5); }
.footer-col a { display:block; font-size:.9rem; color:rgba(255,255,255,.62); padding:5px 0; transition:color .2s, padding-left .2s; }
.footer-col a:hover { color:var(--gold-bright); padding-left:6px; }
.footer-col .contact-item { font-size:.88rem; color:rgba(255,255,255,.58); padding:5px 0; line-height:1.65; }
/* 页脚里若误用了下拉结构，强制平铺显示，避免链接隐藏 */
.site-footer .nav-item .dropdown {
  position:static; opacity:1; visibility:visible; transform:none;
  background:transparent; border:none; box-shadow:none; padding:0; min-width:0;
}
.site-footer .nav-item .dropdown::before,
.site-footer .nav-item .dropdown::after { display:none; }
.site-footer .nav-item .nav-top { padding:5px 0; color:rgba(255,255,255,.62); cursor:default; }
.site-footer .nav-item .nav-top::before { display:none; }
.site-footer .nav-item .nav-top::after { display:none; }
.site-footer .dropdown a { color:rgba(255,255,255,.62); padding:5px 0; }
.site-footer .dropdown a::after { display:none; }
.site-footer .dropdown a:hover { background:transparent; color:var(--gold-bright); padding-left:6px; }

.footer-bottom {
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0 28px;
  display:flex; justify-content:space-between; align-items:center;
  font-size:.82rem; color:rgba(255,255,255,.38);
}

/* ══════════════════════════════════════
   减少动效偏好
══════════════════════════════════════ */
@media (prefers-reduced-motion:reduce) {
  *, *::before, *::after { animation-duration:.001ms !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
  .hero-content > * { opacity:1; transform:none; }
}

/* ══════════════════════════════════════
   RESPONSIVE — 平板
══════════════════════════════════════ */
@media (max-width:1024px) {
  .footer-grid { grid-template-columns:1.4fr 1fr 1fr; }
  .footer-brand { grid-column:1/-1; }
}

@media (max-width:900px) {
  .grid-4 { grid-template-columns:repeat(2,1fr); }
  .pricing-grid { grid-template-columns:repeat(2,1fr); }
  .grid-3 { grid-template-columns:repeat(2,1fr); }
  .steps { grid-template-columns:repeat(2,1fr); gap:28px; }
  .steps::before { display:none; }
  .footer-grid { grid-template-columns:1fr 1fr; }
  .footer-brand { grid-column:1/-1; }
  .hero { min-height:540px; padding:80px 0 64px; }
}

/* ══════════════════════════════════════
   RESPONSIVE — 手机
══════════════════════════════════════ */
@media (max-width:768px) {
  .nav-wrap { height:66px; }
  .burger { display:flex; }
  .nav-links {
    display:none; flex-direction:column;
    position:fixed; inset:66px 0 0 0;
    background:linear-gradient(180deg, var(--bg) 0%, var(--bg-alt) 100%);
    padding:24px 22px 48px;
    overflow-y:auto; z-index:200;
    gap:4px;
    border-top:1px solid var(--border);
  }
  .nav-links.open { display:flex; animation:menuIn .35s var(--ease); }
  @keyframes menuIn { from { opacity:0; transform:translateY(-10px); } to { opacity:1; transform:none; } }
  .nav-links > a, .nav-item > .nav-top {
    width:100%; padding:15px 18px; border-radius:12px;
    font-size:1.06rem;
    border:1px solid transparent;
  }
  .nav-links > a:hover, .nav-links > a.active { background:var(--bg-white); border-color:var(--border-s); }
  .nav-links > a::after, .nav-item > .nav-top::after { display:none; }
  .nav-item { width:100%; }
  .nav-top::before { content:'＋'; float:right; margin-right:0; font-size:.9rem; transition:transform .25s; }
  .nav-item.open .nav-top::before { transform:rotate(45deg); }
  .dropdown {
    position:static; opacity:1; visibility:visible; transform:none;
    box-shadow:none; border:none; min-width:0;
    background:rgba(31,64,52,.05); border-radius:12px;
    padding:6px 10px; margin:2px 0 8px;
    display:none;
  }
  .dropdown::before, .dropdown::after { display:none; }
  .nav-item.open .dropdown { display:block; }
  .nav-links a.btn { margin-top:12px; justify-content:center; }

  .hero { min-height:auto; padding:64px 0 56px; }
  .hero::before { opacity:.16; -webkit-mask-image:none; mask-image:none; background-position:center; }
  .hero::after { background:linear-gradient(180deg, rgba(246,242,233,.7) 0%, var(--bg) 46%, var(--bg) 100%); }
  .hero h1 { font-size:clamp(2.1rem,8vw,2.9rem); }
  .hero-lead { font-size:1.02rem; }

  .section { padding:60px 0; }
  .section-head { margin-bottom:38px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr; gap:32px; }
  .footer-brand { grid-column:1; }
  .pricing-grid { grid-template-columns:1fr; }
  .hall-grid { grid-template-columns:1fr; }
  .steps { grid-template-columns:1fr; }
  .stats-row { flex-direction:column; border-radius:var(--r); }
  .stat-box { border-right:none; border-bottom:1px solid rgba(255,255,255,.12); padding:26px 20px; }
  .stat-box:last-child { border-bottom:none; }

  .form-grid { grid-template-columns:1fr; }
  .form-full { grid-column:1; }

  .tl-item { grid-template-columns:78px 1fr; gap:18px; padding:22px 0; }
  .tl-year { font-size:1.2rem; }
  .footer-bottom { flex-direction:column; gap:10px; text-align:center; }

  .highlight-box { padding:30px 24px; }
  .float-cta { right:16px; bottom:16px; }
}

@media (max-width:480px) {
  .container { width:calc(100% - 32px); }
  .card { padding:24px; }
  .section { padding:48px 0; }
  .page-hero { padding:60px 0 48px; }
  .hero-btns { flex-direction:column; }
  .hero-btns .btn { width:100%; justify-content:center; }
  .hero-eyebrow { font-size:.92rem; letter-spacing:.16em; }
  .highlight-box::after { display:none; }
}