/* =========================================================
   Healthlink — shared brand design system
   暖棕高级 + Instrument Serif + 大留白 (对齐预约页 v6)
   一套 CSS 服务四个站:旗舰 / 理疗 / 技术 / 教育
   ========================================================= */
:root{                   /* 默认皮 = Velvet Cocoa（massage/消费默认，2026-06-30 三色板对齐） */
  --bg:#FFF6ED;          /* 暖白 */
  --ink:#2E1A0F;         /* 深咖 espresso */
  --muted:#8b7d6e;       /* 暖灰 */
  --accent:#8B5E3C;      /* 可可棕铜 */
  --tint:#D2A679;        /* 沙调辅 */
  --line:rgba(46,26,15,.12);
  --serif:'Instrument Serif',Georgia,'Times New Roman',serif;
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);
  font-weight:300;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
.wrap{max-width:1200px;margin:0 auto;padding:0 32px}
.serif{font-family:var(--serif)}
.accent{color:var(--accent)}

/* ---------- nav ---------- */
nav{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;align-items:center;
  justify-content:space-between;padding:22px 40px;backdrop-filter:blur(8px);
  transition:background .4s,border-color .4s;border-bottom:1px solid transparent}
nav.scrolled{background:rgba(247,242,234,.85);border-bottom:1px solid var(--line)}
.logo{font-family:var(--serif);font-size:26px;letter-spacing:-.5px;text-decoration:none;color:var(--ink)}
.logo b{font-weight:400}
.logo .ai,.logo .sub{color:var(--accent)}
.logo .sub{font-size:15px}
.nav-links{display:flex;gap:34px;align-items:center;font-size:14px;letter-spacing:.2px}
.nav-links a{color:var(--ink);text-decoration:none;opacity:.7;transition:opacity .2s}
.nav-links a:hover{opacity:1}
.btn{font-family:var(--sans);font-size:14px;font-weight:500;padding:11px 22px;border-radius:100px;
  background:var(--ink);color:var(--bg);text-decoration:none;transition:transform .2s,opacity .2s;display:inline-block;border:none;cursor:pointer}
.btn:hover{transform:scale(1.04)}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn.accent{background:var(--accent);color:#fff}
@media(max-width:760px){.nav-links a:not(.btn){display:none}nav{padding:18px 24px}}

/* ---------- hero ---------- */
.hero{min-height:100vh;display:flex;flex-direction:column;justify-content:center;
  position:relative;padding:120px 0 80px;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(120% 90% at 75% 15%, #f3e3d2 0%, transparent 55%),
    radial-gradient(100% 80% at 10% 90%, #ead9c4 0%, transparent 50%),
    linear-gradient(180deg,#faf5ee 0%,#f4ebe0 100%)}
.hero-bg svg{position:absolute;bottom:0;left:0;width:100%;height:60%;opacity:.5}
.grain{position:absolute;inset:0;opacity:.04;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
.hero .wrap{position:relative;z-index:2}
.eyebrow{font-size:13px;letter-spacing:3px;text-transform:uppercase;color:var(--accent);font-weight:500;margin-bottom:28px}
h1{font-family:var(--serif);font-weight:400;font-size:clamp(44px,7.5vw,98px);line-height:.98;letter-spacing:-2px;max-width:14ch}
h1 i{color:var(--accent)}
.lead{font-size:clamp(17px,2vw,21px);max-width:48ch;margin-top:30px;color:#4a4138}
.hero-cta{margin-top:42px;display:flex;gap:14px;flex-wrap:wrap}
.scroll-hint{position:absolute;bottom:34px;left:50%;transform:translateX(-50%);
  font-size:12px;letter-spacing:2px;color:var(--muted);text-transform:uppercase;z-index:2}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .9s ease,transform .9s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- section header ---------- */
.section{padding:120px 0}
.section.alt{background:#fbf7f1;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.label{font-size:13px;letter-spacing:3px;text-transform:uppercase;color:var(--accent);font-weight:500;margin-bottom:18px}
.shead{text-align:center;max-width:34ch;margin:0 auto 60px}
.shead h2{font-family:var(--serif);font-weight:400;font-size:clamp(30px,4.4vw,52px);letter-spacing:-1.2px;line-height:1.05}
.shead .label{margin-bottom:14px}
.shead p{color:var(--muted);font-size:16px;margin-top:14px}
h2{font-family:var(--serif);font-weight:400}
h2 i,h3 i{color:var(--accent)}

/* ---------- data wall (big rounded "X+" cards) ---------- */
.data .label,.data h2,.data .sub{text-align:center}
.data h2{font-size:clamp(28px,4vw,46px);letter-spacing:-1px;max-width:20ch;margin:0 auto 12px;line-height:1.05}
.data .sub{color:var(--muted);font-size:15px;max-width:52ch;margin:0 auto 60px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.stat{text-align:center;padding:50px 18px;background:#fffdfa;border:1px solid var(--line);
  border-radius:22px;transition:transform .35s,box-shadow .35s}
.stat:hover{transform:translateY(-5px);box-shadow:0 26px 64px -30px rgba(36,30,25,.3)}
.stat .num{font-family:var(--serif);font-size:clamp(42px,5.5vw,72px);line-height:1;color:var(--ink);font-weight:400}
.stat .num .plus{color:var(--accent)}
.stat .cap{margin-top:16px;font-size:13px;letter-spacing:1.5px;text-transform:uppercase;color:var(--muted)}
@media(max-width:860px){.stats{grid-template-columns:repeat(2,1fr);gap:16px}}
@media(max-width:520px){.stats{grid-template-columns:1fr;gap:14px}}

/* ---------- card grid (services / features) ---------- */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:860px){.grid3{grid-template-columns:1fr}}
.card{padding:36px 32px;background:#fffdfa;border:1px solid var(--line);border-radius:20px;transition:transform .3s,box-shadow .3s}
.card:hover{transform:translateY(-4px);box-shadow:0 24px 60px -30px rgba(36,30,25,.25)}
.card .ci{font-family:var(--serif);font-size:22px;color:var(--accent);margin-bottom:14px}
.card h3{font-family:var(--serif);font-weight:400;font-size:25px;margin-bottom:10px;letter-spacing:-.4px}
.card p{font-size:15px;color:var(--muted)}

/* ---------- positioning (two-col) ---------- */
.cols{display:grid;grid-template-columns:1.1fr 1fr;gap:60px;margin-top:46px;align-items:end}
.cols p{font-size:17px;color:#4a4138;max-width:48ch}
.note{font-size:14px;color:var(--muted);margin-top:18px;padding-left:16px;border-left:2px solid var(--accent)}
.position h2{font-size:clamp(30px,4.6vw,56px);letter-spacing:-1.4px;line-height:1.06;max-width:20ch}
@media(max-width:860px){.cols{grid-template-columns:1fr;gap:28px}}

/* ---------- list rows (pillars / roadmap) ---------- */
.rows .head{display:flex;justify-content:space-between;align-items:baseline;border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:8px}
.rows .head h3{font-family:var(--serif);font-weight:400;font-size:26px}
.rows .head span{font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--accent)}
.row{display:grid;grid-template-columns:60px 1fr auto;gap:28px;align-items:center;padding:30px 4px;border-bottom:1px solid var(--line);transition:padding-left .3s}
.row:hover{padding-left:14px}
.row .idx{font-family:var(--serif);font-size:22px;color:var(--accent)}
.row .t{font-family:var(--serif);font-size:clamp(22px,2.6vw,30px);letter-spacing:-.5px}
.row .d{font-size:14px;color:var(--muted);margin-top:4px}
.tag{font-size:11px;letter-spacing:1.5px;text-transform:uppercase;padding:6px 13px;border-radius:100px;white-space:nowrap}
.tag.live{background:#e3efe7;color:#2E7D5B}
.tag.soon{background:#f3e6da;color:#a86b43}
@media(max-width:760px){.row{grid-template-columns:34px 1fr;gap:14px}.row .tag{grid-column:2}}

/* ---------- dark CTA band ---------- */
.band{padding:120px 0;background:var(--ink);color:var(--bg);text-align:center}
.band h2{font-size:clamp(32px,5vw,64px);letter-spacing:-1.4px;line-height:1.04;max-width:16ch;margin:0 auto}
.band h2 i{color:#d39a6f}
.band p{color:#c9bcae;margin:24px auto 40px;max-width:44ch;font-size:17px}
.band .btn{background:var(--bg);color:var(--ink)}

/* ---------- footer / brand architecture ---------- */
footer{padding:80px 0 50px;border-top:1px solid var(--line)}
.arch{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.arch .brand{font-family:var(--serif);font-size:30px}
.arch .brand .ai{color:var(--accent)}
.arch .brand p{font-size:14px;color:var(--muted);margin-top:14px;max-width:30ch}
.arch h4{font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--muted);margin-bottom:16px}
.arch a{display:block;color:var(--ink);text-decoration:none;font-size:15px;opacity:.8;margin-bottom:10px;transition:opacity .2s}
.arch a:hover{opacity:1;color:var(--accent)}
.arch a small{color:var(--muted);font-size:12px}
.legal{margin-top:60px;padding-top:24px;border-top:1px solid var(--line);display:flex;justify-content:space-between;font-size:13px;color:var(--muted);flex-wrap:wrap;gap:10px}
@media(max-width:860px){.arch{grid-template-columns:1fr 1fr;gap:34px}}