/* 松球科技 v4 — 排版参考 ailianjk，纯 typography + 白金 */
.aljk-page{
  --gold:#B8943F;--gold-light:#D4B56A;--gold-pale:#FAF5EB;--gold-line:rgba(184,148,63,.18);
  --ink:#141414;--muted:#646464;--muted-light:#999;
  --bg:#FFFFFF;--bg-soft:#FAFAF8;--shadow:0 12px 40px rgba(20,20,20,.06);
  --max:1140px;--narrow:680px;--wide:880px;--radius:12px;
  font-family:'PingFang SC','Microsoft YaHei',-apple-system,sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.65;-webkit-font-smoothing:antialiased;
}
.aljk-page *,.aljk-page *::before,.aljk-page *::after{box-sizing:border-box;margin:0;padding:0}
.aljk-page a{text-decoration:none;color:inherit}
.aljk-page button{cursor:pointer;font-family:inherit;border:none;background:none}
.aljk-wrap{max-width:var(--max);margin:0 auto;padding:0 32px}
.aljk-narrow{max-width:calc(var(--narrow) + 64px)}
.aljk-narrow-wide{max-width:calc(var(--wide) + 64px)}

/* NAV */
.aljk-nav{position:fixed;inset:0 0 auto;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);border-bottom:1px solid transparent;transition:.3s}
.aljk-nav.scrolled{border-bottom-color:var(--gold-line);box-shadow:0 1px 0 rgba(184,148,63,.06)}
.aljk-nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.aljk-logo{display:flex;align-items:center;gap:10px}
.aljk-logo-icon{width:34px;height:34px;border-radius:8px;background:var(--gold);color:#fff;font-size:15px;font-weight:800;display:flex;align-items:center;justify-content:center}
.aljk-logo-text{font-size:16px;font-weight:600;letter-spacing:1px;color:var(--ink)}
.aljk-nav-links{display:flex;gap:32px;list-style:none}
.aljk-nav-links a{font-size:14px;color:var(--muted);transition:color .25s}
.aljk-nav-links a:hover,.aljk-nav-links a.active{color:var(--gold)}
.aljk-nav-actions{display:flex;gap:8px}
.aljk-nav-btn{padding:8px 18px;border-radius:6px;font-size:13px;font-weight:600;transition:.25s}
.aljk-nav-btn.ghost{color:var(--muted);border:1px solid #E5E5E5}
.aljk-nav-btn.ghost:hover{border-color:var(--gold);color:var(--gold)}
.aljk-nav-btn.solid{background:var(--gold);color:#fff}
.aljk-nav-btn.solid:hover{background:var(--gold-light)}
.aljk-hamburger{display:none;flex-direction:column;gap:5px;padding:8px}
.aljk-hamburger span{width:20px;height:2px;background:var(--ink);border-radius:1px}
.aljk-mmenu{display:none;position:fixed;top:68px;left:0;right:0;background:#fff;border-bottom:1px solid #eee;padding:8px 0;z-index:999}
.aljk-mmenu.open{display:block}
.aljk-mmenu a{display:block;padding:14px 32px;font-size:14px;color:var(--muted);border-bottom:1px solid #f5f5f5}
@media(max-width:900px){.aljk-nav-links,.aljk-nav-actions{display:none}.aljk-hamburger{display:flex}}

/* HERO — 浅色底 + 听诊器背景图 */
.aljk-hero-full{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden;padding:96px 0 80px;background:#FAF7F2}
.aljk-hero-bg{position:absolute;inset:0;background:center/cover no-repeat;transform:scale(1.02);animation:aljkHeroKen 22s ease-in-out infinite alternate;opacity:.68}
.aljk-hero-overlay{position:absolute;inset:0;background:
  linear-gradient(115deg,rgba(255,252,247,.78) 0%,rgba(250,245,235,.62) 48%,rgba(255,255,255,.52) 100%),
  linear-gradient(180deg,rgba(255,255,255,.35) 0%,transparent 45%,rgba(250,245,235,.28) 100%)}
.aljk-hero-layout{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:clamp(28px,5vw,56px);align-items:center;width:100%}
.aljk-hero-main{text-align:left;color:var(--ink);max-width:560px}
.aljk-hero-full .aljk-eyebrow{display:inline-block;color:var(--gold);margin-bottom:22px;padding-bottom:14px;border-bottom:1px solid rgba(184,148,63,.35);font-size:12px;letter-spacing:4px}
.aljk-hero.aljk-hero-full h1{font-size:clamp(38px,5.5vw,62px);font-weight:700;letter-spacing:clamp(4px,1.2vw,10px);line-height:1.12;margin-bottom:18px;color:var(--ink)}
.aljk-hero-full .aljk-lead{font-size:clamp(17px,2vw,22px);color:var(--muted);letter-spacing:1px;font-weight:300;line-height:1.75;margin-bottom:36px;max-width:480px}
.aljk-hero-full .aljk-hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.aljk-hero-panel{position:relative;background:rgba(255,255,255,.78);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--gold-line);border-radius:16px;padding:clamp(28px,4vw,40px) clamp(24px,3vw,36px);box-shadow:var(--shadow)}
.aljk-hero-panel::before{content:'';display:block;width:36px;height:3px;background:linear-gradient(90deg,var(--gold),var(--gold-light));border-radius:2px;margin-bottom:22px}
.aljk-hero-panel p{font-size:15px;color:var(--muted);line-height:2;letter-spacing:.4px;text-align:justify}
.aljk-hero-full .aljk-btn{padding:14px 28px;border-radius:8px}
.aljk-hero-full .aljk-btn.primary{background:var(--gold);color:#fff}
.aljk-hero-full .aljk-btn.primary:hover{background:var(--gold-light);transform:translateY(-1px);box-shadow:0 8px 24px rgba(184,148,63,.28)}
.aljk-hero-full .aljk-btn.outline{border:1.5px solid rgba(184,148,63,.45);color:var(--ink);background:rgba(255,255,255,.65)}
.aljk-hero-full .aljk-btn.outline:hover{border-color:var(--gold);color:var(--gold);background:#fff}
.aljk-hero-full .aljk-hero-scroll{position:absolute;bottom:28px;left:50%;transform:translateX(-50%);z-index:2;color:var(--muted-light);font-size:12px;letter-spacing:2px;display:flex;flex-direction:column;align-items:center;gap:8px}
.aljk-hero-full .aljk-hero-scroll::after{content:'';width:1px;height:28px;background:linear-gradient(var(--gold),transparent);animation:aljkScroll 2s ease infinite}
@keyframes aljkHeroKen{from{transform:scale(1)}to{transform:scale(1.05)}}
@media(max-width:900px){
  .aljk-hero-layout{grid-template-columns:1fr;gap:32px}
  .aljk-hero-main{max-width:none;text-align:center;margin:0 auto}
  .aljk-hero-full .aljk-lead{margin-left:auto;margin-right:auto}
  .aljk-hero-full .aljk-hero-actions{justify-content:center}
  .aljk-hero-panel p{text-align:left}
}
@media(max-width:560px){
  .aljk-hero-full{padding:88px 0 72px;min-height:auto}
  .aljk-hero.aljk-hero-full h1{letter-spacing:4px}
}

/* 旧 hero 备用 */
.aljk-hero{min-height:88vh;display:flex;align-items:center;justify-content:center;padding:100px 0 80px;background:linear-gradient(180deg,#fff 0%,var(--gold-pale) 100%)}
.aljk-hero-inner{text-align:center;max-width:760px}
.aljk-eyebrow{font-size:13px;color:var(--gold);letter-spacing:3px;margin-bottom:28px;font-weight:500}
.aljk-hero h1{font-size:clamp(36px,6vw,56px);font-weight:700;letter-spacing:6px;color:var(--ink);margin-bottom:24px}
.aljk-lead{font-size:clamp(16px,2.2vw,20px);color:var(--muted);letter-spacing:2px;line-height:1.8;font-weight:300}
.aljk-hero-actions{display:flex;justify-content:center;gap:14px;margin-top:44px;flex-wrap:wrap}
.aljk-btn{padding:14px 32px;border-radius:6px;font-size:14px;font-weight:600;letter-spacing:1px;transition:.25s}
.aljk-btn.primary{background:var(--ink);color:#fff}
.aljk-btn.primary:hover{transform:translateY(-1px);box-shadow:var(--shadow)}
.aljk-btn.outline{border:1.5px solid var(--gold-line);color:var(--ink)}
.aljk-btn.outline:hover{border-color:var(--gold);color:var(--gold)}

@keyframes aljkScroll{0%,100%{opacity:.4;transform:scaleY(.6)}50%{opacity:1;transform:scaleY(1)}}

/* 导航在 Hero 浅色底上 */
.aljk-nav.on-hero{background:rgba(255,255,255,.78);border-bottom-color:transparent;backdrop-filter:blur(12px)}
.aljk-nav.on-hero .aljk-logo-text{color:var(--ink)}
.aljk-nav.on-hero .aljk-nav-links a{color:var(--muted)}
.aljk-nav.on-hero .aljk-nav-links a.active,.aljk-nav.on-hero .aljk-nav-links a:hover{color:var(--gold)}
.aljk-nav.on-hero .aljk-nav-btn.ghost{border-color:rgba(184,148,63,.35);color:var(--muted)}
.aljk-nav.on-hero .aljk-nav-btn.solid{background:var(--gold);color:#fff}
.aljk-nav.on-hero .aljk-hamburger span{background:var(--ink)}
.aljk-nav.on-hero.scrolled{background:rgba(255,255,255,.96);backdrop-filter:blur(16px);border-bottom-color:var(--gold-line)}
.aljk-nav.on-hero.scrolled .aljk-logo-text{color:var(--ink)}
.aljk-nav.on-hero.scrolled .aljk-nav-links a{color:var(--muted)}
.aljk-nav.on-hero.scrolled .aljk-nav-links a.active,.aljk-nav.on-hero.scrolled .aljk-nav-links a:hover{color:var(--gold)}
.aljk-nav.on-hero.scrolled .aljk-nav-btn.ghost{border-color:#E5E5E5;color:var(--muted)}
.aljk-nav.scrolled{background:rgba(255,255,255,.97);backdrop-filter:blur(16px);border-bottom-color:var(--gold-line)}
.aljk-nav.scrolled .aljk-logo-text{color:var(--ink)}
.aljk-nav.scrolled .aljk-nav-links a{color:var(--muted)}
.aljk-nav.scrolled .aljk-nav-btn.ghost{border-color:#E5E5E5;color:var(--muted)}
.aljk-nav.scrolled .aljk-hamburger span{background:var(--ink)}

.aljk-page svg{display:block}

/* SECTIONS（内页沿用符号版） */
.aljk-sec{padding:100px 0;background:var(--bg)}
.aljk-sec.gray{background:var(--bg-soft)}
.aljk-sec.gold{background:var(--gold-pale)}
.aljk-sec-title{text-align:center;margin-bottom:56px}
.aljk-sec-title h2{font-size:clamp(28px,4vw,38px);font-weight:700;color:var(--ink);letter-spacing:2px;margin-bottom:8px}
.aljk-sec-title .en{font-size:14px;font-weight:600;color:var(--gold);letter-spacing:3px;text-transform:uppercase}

/* ABOUT */
.aljk-about{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.aljk-about-simple{display:block;max-width:720px;margin:0 auto}
.aljk-about-simple .aljk-about-body{text-align:center}
.aljk-about-simple .aljk-about-body h3{font-size:clamp(22px,3vw,28px);margin-bottom:20px}
.aljk-about-simple .aljk-about-body p{font-size:16px;line-height:2;margin-bottom:16px;color:var(--muted)}
.aljk-about-body h3{font-size:26px;font-weight:700;margin-bottom:16px;letter-spacing:1px;color:var(--ink)}
.aljk-about-body p{font-size:15px;color:var(--muted);line-height:1.9;margin-bottom:14px}
@media(max-width:768px){.aljk-about{grid-template-columns:1fr;gap:32px}}

/* BUSINESS CARDS */
.aljk-card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media(max-width:900px){.aljk-card-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.aljk-card-grid{grid-template-columns:1fr}}
.aljk-card{position:relative;background:#fff;border-radius:var(--radius);padding:32px 28px 36px;min-height:220px;transition:transform .35s,box-shadow .35s;overflow:hidden;border:1px solid var(--gold-line)}
.aljk-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(184,148,63,.35)}
.aljk-card-num{position:absolute;top:12px;right:20px;font-size:72px;font-weight:900;color:#F5F0E6;line-height:1;user-select:none;pointer-events:none}
.aljk-card-icon{width:52px;height:52px;border-radius:12px;background:var(--gold-pale);border:1px solid var(--gold-line);display:flex;align-items:center;justify-content:center;margin-bottom:20px;color:var(--gold)}
.aljk-card-icon svg{width:26px;height:26px}
.aljk-card h3{font-size:18px;font-weight:700;margin-bottom:10px}
.aljk-card p{font-size:14px;color:var(--muted);line-height:1.8}

/* STRENGTHS */
.aljk-strength-list{display:flex;flex-direction:column;gap:20px}
.aljk-strength{display:flex;align-items:center;gap:32px;padding:32px 36px;border-radius:var(--radius);background:#fff;border:1px solid var(--gold-line);box-shadow:0 4px 24px rgba(184,148,63,.06)}
.aljk-strength-visual{flex-shrink:0;width:100px;height:100px;display:flex;align-items:center;justify-content:center;background:var(--gold-pale);border:1px solid var(--gold-line);border-radius:50%}
.aljk-strength-visual svg{width:64px;height:64px}
.aljk-strength-body{flex:1}
.aljk-strength-body h3{font-size:20px;font-weight:700;margin-bottom:10px;line-height:1.4}
.aljk-strength-body p{font-size:14px;color:var(--muted);line-height:1.85}
@media(max-width:768px){.aljk-strength{flex-direction:column;text-align:center;padding:28px 24px}.aljk-strength-visual{width:80px;height:80px}.aljk-strength-visual svg{width:48px;height:48px}}

/* ARTICLES */
.aljk-art-price{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--gold-line);border-radius:8px;padding:10px 24px;margin:0 auto 40px;font-size:14px;box-shadow:0 2px 12px rgba(184,148,63,.08)}
.aljk-art-price strong{font-size:22px;color:var(--gold);font-weight:800}
.aljk-art-grid{display:flex;flex-direction:column;gap:16px}
.aljk-art{display:flex;align-items:flex-start;gap:24px;background:#fff;border-radius:var(--radius);padding:28px 32px;border:1px solid var(--gold-line);cursor:pointer;transition:all .3s}
.aljk-art:hover{border-color:rgba(184,148,63,.4);box-shadow:var(--shadow);transform:translateY(-2px)}
.aljk-art-num{flex-shrink:0;width:44px;height:44px;border-radius:10px;background:linear-gradient(135deg,var(--gold),var(--gold-light));display:flex;align-items:center;justify-content:center;color:#fff;font-size:15px;font-weight:800}
.aljk-art-body{flex:1;min-width:0}
.aljk-art-body h3{font-size:17px;font-weight:700;margin-bottom:8px;line-height:1.5}
.aljk-art-body p{font-size:14px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.aljk-art-meta{display:flex;align-items:center;gap:10px;margin-top:12px;flex-wrap:wrap}
.aljk-badge{font-size:11px;font-weight:600;padding:3px 12px;border-radius:50px;background:var(--gold-pale);color:var(--gold);border:1px solid var(--gold-line)}
.aljk-date{font-size:12px;color:var(--muted-light)}
.aljk-art-btn{flex-shrink:0;align-self:center;padding:10px 24px;border-radius:8px;background:linear-gradient(135deg,var(--gold),var(--gold-light));color:#fff;font-size:13px;font-weight:600;transition:all .3s;white-space:nowrap}
.aljk-art:hover .aljk-art-btn{box-shadow:0 4px 16px rgba(184,148,63,.35)}
@media(max-width:600px){.aljk-art{flex-direction:column;gap:16px}.aljk-art-btn{align-self:flex-start}}

/* CONTACT */
.aljk-contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:48px;align-items:start}
.aljk-contact-info h3{font-size:22px;font-weight:700;margin-bottom:24px}
.aljk-ci{display:flex;gap:14px;margin-bottom:20px;align-items:flex-start}
.aljk-ci-icon{width:40px;height:40px;border-radius:10px;background:var(--gold-pale);border:1px solid var(--gold-line);display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--gold)}
.aljk-ci-icon svg{width:20px;height:20px}
.aljk-ci-label{font-size:12px;color:var(--muted);margin-bottom:2px}
.aljk-ci-val{font-size:14px;font-weight:500}
.aljk-contact-note{font-size:13px;color:var(--muted);margin-top:20px;line-height:1.8}
.aljk-form{background:#fff;border-radius:var(--radius);padding:36px;border:1px solid var(--gold-line);box-shadow:0 4px 24px rgba(184,148,63,.06)}
.aljk-form h3{font-size:18px;font-weight:700;margin-bottom:24px;text-align:center}
.aljk-form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:560px){.aljk-form-row{grid-template-columns:1fr}}
.aljk-fg{margin-bottom:18px}
.aljk-fl{display:block;font-size:13px;font-weight:600;margin-bottom:7px}
.aljk-fi,.aljk-fta{width:100%;padding:12px 16px;border:1.5px solid var(--gold-line);border-radius:10px;font-size:14px;background:var(--bg-soft);outline:none;transition:.3s;font-family:inherit}
.aljk-fi:focus,.aljk-fta:focus{border-color:var(--gold);box-shadow:0 0 0 3px rgba(184,148,63,.12);background:#fff}
.aljk-fta{resize:vertical;min-height:110px}
.aljk-fsub{width:100%;padding:14px;border-radius:10px;background:linear-gradient(135deg,var(--gold),var(--gold-light));color:#fff;font-size:15px;font-weight:600;letter-spacing:1px;margin-top:4px;transition:.3s}
.aljk-fsub:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(184,148,63,.35)}
.aljk-form-ok{display:none;text-align:center;padding:40px 20px}
.aljk-form-ok.show{display:block}
.aljk-form-ok .ok-icon{width:56px;height:56px;border-radius:50%;background:var(--gold-pale);color:var(--gold);display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:700;margin:0 auto 16px}
.aljk-form-ok p{font-size:14px;color:var(--muted);margin-top:8px}
@media(max-width:768px){.aljk-contact-grid{grid-template-columns:1fr;gap:32px}}

/* FOOTER */
.aljk-footer{background:var(--gold-pale);color:var(--muted);padding:56px 0 32px;border-top:1px solid var(--gold-line)}
.aljk-ft-top{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:48px;margin-bottom:40px;padding-bottom:40px;border-bottom:1px solid var(--gold-line)}
.aljk-ft-brand{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:2px;margin-bottom:12px}
.aljk-ft-desc{font-size:13px;line-height:1.8;max-width:280px}
.aljk-ft-hd{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:16px}
.aljk-ft-links{list-style:none;display:flex;flex-direction:column;gap:10px}
.aljk-ft-links a{font-size:13px;color:var(--muted);transition:color .3s}
.aljk-ft-links a:hover{color:var(--gold)}
.aljk-ft-btm{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;font-size:12px;color:var(--muted-light)}
.aljk-ft-beian{display:flex;flex-wrap:wrap;gap:16px}
.aljk-ft-btm a{color:var(--muted-light);transition:color .3s}
.aljk-ft-btm a:hover{color:var(--gold)}
@media(max-width:768px){.aljk-ft-top{grid-template-columns:1fr;gap:28px;text-align:center}.aljk-ft-desc{max-width:none;margin:0 auto}.aljk-ft-links{align-items:center}.aljk-ft-btm{flex-direction:column;text-align:center}}

.spinner{width:28px;height:28px;border:2px solid #eee;border-top-color:var(--gold);border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.modal-ov{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:10040;align-items:center;justify-content:center;padding:20px}
.modal-ov.open{display:flex}
.modal-box{background:#fff;border-radius:16px;width:100%;overflow:hidden}
.m-hd{padding:22px 26px 0;display:flex;align-items:center;justify-content:space-between}
.m-title{font-size:17px;font-weight:700}
.m-close{width:34px;height:34px;border-radius:50%;background:#f3f4f6;color:#6b7280;font-size:20px;line-height:1}
.m-body{padding:20px 26px 26px}
#pay-modal{z-index:10050}
#reader-modal{z-index:10040}
#reader-modal .modal-box{max-width:760px;max-height:88vh;display:flex;flex-direction:column}
.r-hd{padding:22px 28px 0;display:flex;align-items:flex-start;justify-content:space-between;gap:12px;flex-shrink:0}
.r-title{font-size:18px;font-weight:700;line-height:1.5;flex:1}
.r-body{padding:20px 28px 28px;overflow-y:auto;flex:1}
.r-content p{font-size:15px;color:#374151;line-height:1.9;margin-bottom:16px}
.r-content h4{font-size:15px;font-weight:700;margin:22px 0 10px}
.pw-wrap{position:relative;max-height:160px;overflow:hidden;min-height:120px}
.pw-notice{background:var(--gold-pale);border:1px solid var(--gold-line);border-radius:14px;padding:24px;text-align:center;margin-top:16px}
.pw-icon{font-size:32px;margin-bottom:10px}
.pw-title{font-size:15px;font-weight:700;margin-bottom:7px}
.pw-desc{font-size:13px;color:var(--muted);margin-bottom:16px;line-height:1.7}
.pw-btn{display:inline-flex;align-items:center;padding:10px 28px;border-radius:50px;background:var(--gold);color:#fff;font-size:13px;font-weight:600}
#pay-qr-box{position:relative;width:236px;height:236px;margin:0 auto;border:1px solid #eee;border-radius:10px;overflow:hidden;background:#fff}
#pay-qr-loading{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#fafafa}
#pay-qr-iframe{position:absolute;inset:0;width:100%;height:100%;border:none}