/* ==========================================================================
   利训 · 莫启莉  |  海外工程项目成本管理
   Palette: paper / ink / brass / teal
   ========================================================================== */

:root{
  --ink:#0B1F2A;
  --ink-2:#14313F;
  --paper:#F7F4EE;
  --paper-2:#EFEAE0;
  --brass:#C8A063;
  --brass-d:#A2803C;
  --teal:#1F6F63;
  --muted:#5A686E;
  --line:rgba(11,31,42,.13);
  --white:#fff;
  --shadow:0 20px 54px -26px rgba(11,31,42,.35);
  --serif:"Source Han Serif SC","Noto Serif SC","Songti SC","SimSun",Georgia,"Times New Roman",serif;
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.32;margin:0;letter-spacing:-.01em}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
strong,b{font-weight:600}

.wrap{width:min(1120px,calc(100% - 48px));margin-inline:auto}
.section{padding:104px 0}
.section--sm{padding:72px 0}
.section--dark{background:var(--ink);color:var(--paper)}
.section--paper2{background:var(--paper-2)}
.section--line{border-top:1px solid var(--line)}

/* ---------- typography ---------- */
.eyebrow{
  font-size:11.5px;letter-spacing:.26em;text-transform:uppercase;
  color:var(--brass-d);font-weight:700;margin:0 0 20px;
  display:flex;align-items:center;gap:13px;
}
.eyebrow::before{content:"";width:28px;height:1px;background:currentColor;display:block;flex-shrink:0}
.section--dark .eyebrow{color:var(--brass)}
.h2{font-size:clamp(27px,3.3vw,41px);line-height:1.28}
.h3{font-size:19px;margin-bottom:9px}
.lead{font-size:16.5px;color:var(--muted);max-width:60ch;line-height:1.85}
.section--dark .lead{color:rgba(247,244,238,.7)}
.section-head{margin-bottom:56px;max-width:760px}
.section-head .h2{margin-bottom:18px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:15px 28px;font-size:14.5px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:.26s;line-height:1;
  font-family:var(--sans);border-radius:1px;
}
.btn svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:2;transition:transform .26s}
.btn:hover svg{transform:translateX(3px)}
.btn--primary{background:var(--ink);color:var(--paper)}
.btn--primary:hover{background:var(--teal);transform:translateY(-2px);box-shadow:0 12px 26px -12px rgba(31,111,99,.6)}
.btn--brass{background:var(--brass);color:var(--ink)}
.btn--brass:hover{background:#D6B177;transform:translateY(-2px)}
.btn--ghost{border-color:rgba(11,31,42,.26);color:var(--ink)}
.btn--ghost:hover{border-color:var(--ink);background:rgba(11,31,42,.045)}
.section--dark .btn--ghost{border-color:rgba(247,244,238,.32);color:var(--paper)}
.section--dark .btn--ghost:hover{background:rgba(247,244,238,.09);border-color:rgba(247,244,238,.6)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,244,238,.9);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px;gap:24px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand__mark{
  width:39px;height:39px;background:var(--ink);color:var(--brass);
  display:grid;place-items:center;font-family:var(--serif);font-size:16px;
  border-radius:1px;flex-shrink:0;letter-spacing:.02em;
}
.brand__text{line-height:1.28}
.brand__name{font-family:var(--serif);font-size:16.5px;font-weight:600;display:block;letter-spacing:.02em}
.brand__desc{font-size:10.5px;color:var(--muted);letter-spacing:.09em}
.nav__links{display:flex;align-items:center;gap:32px}
.nav__links a{font-size:14.5px;color:var(--ink-2);position:relative;padding:5px 0}
.nav__links a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--brass-d);transition:width .28s;
}
.nav__links a:hover::after,.nav__links a.is-active::after{width:100%}
.nav__cta{display:flex;align-items:center;gap:14px}
.nav__cta .btn{padding:11px 20px;font-size:13.5px}
.nav-toggle{display:none;background:none;border:1px solid var(--line);padding:10px 9px;cursor:pointer;border-radius:1px}
.nav-toggle span{display:block;width:19px;height:1.5px;background:var(--ink);margin:4px 0;transition:.2s}
.nav-toggle span:first-child{margin-top:0}
.nav-toggle span:last-child{margin-bottom:0}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;padding:88px 0 92px;
  background:
    radial-gradient(900px 480px at 92% -8%,rgba(200,160,99,.19),transparent 60%),
    linear-gradient(178deg,var(--paper) 0%,var(--paper-2) 100%);
}
.hero__grid{display:grid;grid-template-columns:1.14fr .86fr;gap:68px;align-items:center}
.hero__tag{
  display:inline-flex;align-items:center;gap:9px;font-size:12px;letter-spacing:.1em;
  color:var(--teal);border:1px solid rgba(31,111,99,.3);background:rgba(31,111,99,.06);
  padding:7px 14px;border-radius:99px;margin-bottom:28px;font-weight:600;
}
.hero__tag i{width:5px;height:5px;border-radius:50%;background:var(--teal);display:block}
.hero h1{font-size:clamp(32px,4.4vw,52px);line-height:1.24;margin-bottom:26px;letter-spacing:-.02em}
.hero h1 em{font-style:normal;color:var(--brass-d);white-space:nowrap}
.hero__sub{font-size:16.5px;color:var(--ink-2);max-width:50ch;margin-bottom:36px;line-height:1.85}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.hero__meta{display:flex;gap:24px;flex-wrap:wrap;font-size:12.8px;color:var(--muted)}
.hero__meta span{display:flex;align-items:center;gap:7px}
.hero__meta svg{width:14px;height:14px;stroke:var(--brass-d);fill:none;stroke-width:1.7;flex-shrink:0}

.hero__photo{position:relative;z-index:1;max-width:404px;margin-left:auto;margin-right:auto}
.hero__photo::before{
  content:"";position:absolute;inset:16px -16px -16px 16px;border:1px solid var(--brass);z-index:0;
}
.hero__photo img{
  position:relative;z-index:1;width:100%;aspect-ratio:4/5;object-fit:cover;object-position:50% 16%;
}

/* ---------- hero 交付物面板（替代照片） ---------- */
.hero__panel{
  position:relative;z-index:1;background:var(--white);border:1px solid var(--line);
  box-shadow:var(--shadow);padding:34px 34px 26px;
}
.hero__panel::before{
  content:"";position:absolute;inset:12px -12px -12px 12px;border:1px solid var(--brass);z-index:-1;
}
.hero__panel-head{
  font-size:11.5px;letter-spacing:.22em;color:var(--brass-d);font-weight:700;
  padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:6px;
}
.hero__panel-list li{
  padding:16px 0;border-bottom:1px solid rgba(11,31,42,.07);
  display:grid;grid-template-columns:1fr;gap:4px;
}
.hero__panel-list li:last-child{border-bottom:0}
.hero__panel-list b{font-family:var(--serif);font-size:16.5px;color:var(--ink);font-weight:600;line-height:1.45}
.hero__panel-list span{font-size:13px;color:var(--muted);line-height:1.6}
.hero__panel-foot{
  margin-top:14px;padding-top:16px;border-top:1px solid var(--line);
  font-size:12px;color:var(--muted);letter-spacing:.02em;
}

.hero__stamp{
  position:absolute;z-index:2;right:-26px;bottom:46px;
  background:var(--ink);color:var(--paper);padding:15px 19px;
  font-size:11px;letter-spacing:.15em;line-height:1.8;text-align:center;box-shadow:var(--shadow);
}
.hero__stamp b{display:block;font-family:var(--serif);font-size:18px;color:var(--brass);letter-spacing:.04em;margin-bottom:2px}

/* ---------- metrics ---------- */
.metrics{background:var(--ink);color:var(--paper)}
.metrics__grid{display:grid;grid-template-columns:repeat(4,1fr)}
.metric{padding:44px 32px;border-left:1px solid rgba(247,244,238,.11)}
.metric:first-child{border-left:0;padding-left:0}
.metric__num{
  font-family:var(--serif);font-size:clamp(25px,3.1vw,37px);color:var(--brass);
  line-height:1.14;display:flex;align-items:baseline;gap:5px;
}
.metric__num small{font-size:12.5px;color:rgba(247,244,238,.55);font-family:var(--sans);font-weight:400}
.metric__num--word{font-size:clamp(19px,2.1vw,25px);letter-spacing:.01em;flex-wrap:wrap}
.metric__num--word small{font-size:11.5px;letter-spacing:.08em}
.metric__label{font-size:13px;color:rgba(247,244,238,.7);margin-top:12px;line-height:1.65}

/* ---------- pain / why ---------- */
.pain__grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.pain__item{background:var(--paper);padding:38px 36px;transition:background .3s}
.pain__item:hover{background:var(--white)}
.pain__num{font-family:var(--serif);font-size:12px;color:var(--brass-d);letter-spacing:.18em;margin-bottom:15px}
.pain__item h3{font-size:19px;margin-bottom:10px;line-height:1.45}
.pain__item p{font-size:14.3px;color:var(--muted);margin:0;line-height:1.8}

/* ---------- services ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.svc{
  background:var(--white);border:1px solid var(--line);padding:34px 30px;
  display:flex;flex-direction:column;transition:transform .28s,box-shadow .28s;position:relative;overflow:hidden;
}
.svc::after{content:"";position:absolute;left:0;top:0;height:3px;width:0;background:var(--brass);transition:width .42s}
.svc:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.svc:hover::after{width:100%}
.svc__kicker{font-size:11px;letter-spacing:.17em;color:var(--brass-d);font-weight:700;margin-bottom:15px}
.svc h3{font-size:20px;margin-bottom:12px}
.svc__desc{font-size:14.2px;color:var(--muted);line-height:1.8;margin-bottom:20px;padding-bottom:20px;border-bottom:1px dashed var(--line)}
.svc ul{margin-bottom:22px;flex:1}
.svc li{font-size:13.8px;color:var(--ink-2);padding-left:17px;position:relative;margin-bottom:9px;line-height:1.7}
.svc li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border:1px solid var(--brass-d);border-radius:50%}
.svc__price{
  font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:16px;
  display:flex;justify-content:space-between;align-items:baseline;gap:10px;flex-wrap:wrap;
}
.svc__price b{font-family:var(--serif);font-size:17px;color:var(--ink)}
.svc__price s{color:var(--muted);font-size:12px;text-decoration-color:rgba(90,104,110,.5)}
.svc__tag{color:var(--teal);font-weight:700;font-size:11.5px;letter-spacing:.06em}

/* ---------- method ---------- */
.method{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;counter-reset:m}
.method__step{position:relative;padding-top:24px;border-top:2px solid var(--line)}
.method__step::before{
  counter-increment:m;content:"0" counter(m);
  position:absolute;top:-13px;left:0;background:var(--paper);padding-right:13px;
  font-family:var(--serif);font-size:13px;color:var(--brass-d);letter-spacing:.1em;
}
.section--paper2 .method__step::before{background:var(--paper-2)}
.method__step h4{font-size:17px;margin-bottom:9px}
.method__step p{font-size:13.6px;color:var(--muted);margin:0;line-height:1.78}

/* ---------- cases ---------- */
.case-list{border-top:1px solid rgba(247,244,238,.15)}
.case{display:grid;grid-template-columns:210px 1fr;gap:48px;padding:38px 0;border-bottom:1px solid rgba(247,244,238,.15)}
.case__label{font-size:11px;letter-spacing:.16em;color:var(--brass);margin-bottom:9px;font-weight:700}
.case__title{font-family:var(--serif);font-size:17.5px;color:var(--paper);line-height:1.5}
.case__body{font-size:14.3px;color:rgba(247,244,238,.72);line-height:1.85}
.case__body p{margin-bottom:14px}
.case__kpis{display:flex;gap:34px;flex-wrap:wrap;margin-top:18px}
.case__kpi b{font-family:var(--serif);color:var(--brass);font-size:19px;display:block;line-height:1.3}
.case__kpi span{font-size:11.5px;color:rgba(247,244,238,.5);letter-spacing:.02em}

/* ---------- about strip ---------- */
/* ---------- 授课现场凭证 ---------- */
.proof{margin:56px 0 0;display:grid;grid-template-columns:1fr 300px;gap:40px;align-items:center;
  padding-top:44px;border-top:1px solid rgba(247,244,238,.15)}
.proof img{width:100%;height:auto;display:block;border-radius:1px;
  filter:saturate(.9) contrast(1.02);box-shadow:0 22px 48px rgba(0,0,0,.32)}
.proof figcaption{font-size:13.2px;color:rgba(247,244,238,.58);line-height:1.9}
.proof figcaption b{display:block;font-family:var(--serif);font-size:16px;color:var(--paper);
  font-weight:600;margin-bottom:9px;letter-spacing:.2px}

.about-strip{display:grid;grid-template-columns:1fr 340px;gap:64px;align-items:start}
.tl{position:relative;padding-left:26px}
.tl::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:1px;background:var(--line)}
.tl__item{position:relative;padding-bottom:32px}
.tl__item:last-child{padding-bottom:0}
.tl__item::before{
  content:"";position:absolute;left:-30px;top:9px;width:9px;height:9px;border-radius:50%;
  background:var(--paper);border:2px solid var(--brass);
}
.tl__when{font-size:12px;letter-spacing:.1em;color:var(--brass-d);font-weight:700;margin-bottom:5px}
.tl__item h4{font-size:17px;margin-bottom:6px;font-family:var(--serif)}
.tl__item p{font-size:14.2px;color:var(--muted);margin:0;line-height:1.8}

/* ---------- credential card ---------- */
.cred-card{border:1px solid var(--line);background:var(--white);box-shadow:var(--shadow)}
.cred-card__row{
  display:grid;grid-template-columns:76px 1fr;gap:14px;
  padding:16px 20px;border-bottom:1px solid var(--line);
  font-size:13.3px;line-height:1.65;align-items:baseline;
}
.cred-card__row:last-child{border-bottom:0}
.cred-card__row span{color:var(--muted);font-size:12.3px;white-space:nowrap}
.cred-card__row b{color:var(--ink);font-weight:600;font-size:14px;line-height:1.6}

/* ---------- quote ---------- */
.quote{background:var(--white);border-left:3px solid var(--brass);padding:40px 42px;box-shadow:var(--shadow)}
.quote p{font-family:var(--serif);font-size:clamp(18px,2.2vw,23px);line-height:1.72;margin:0 0 16px;color:var(--ink)}
.quote cite{font-style:normal;font-size:12.5px;color:var(--muted);letter-spacing:.04em}

/* ---------- FAQ ---------- */
.faq{max-width:880px;border-top:1px solid var(--line)}
.faq__item{border-bottom:1px solid var(--line)}
.faq__q{
  width:100%;text-align:left;background:none;border:0;padding:23px 44px 23px 0;
  font-family:var(--sans);font-size:16px;font-weight:600;color:var(--ink);cursor:pointer;position:relative;line-height:1.6;
}
.faq__q::after{
  content:"";position:absolute;right:8px;top:50%;
  width:11px;height:11px;border-right:1.5px solid var(--brass-d);border-bottom:1.5px solid var(--brass-d);
  transform:translateY(-70%) rotate(45deg);transition:transform .3s;
}
.faq__item.open .faq__q::after{transform:translateY(-30%) rotate(225deg)}
.faq__a{max-height:0;overflow:hidden;transition:max-height .34s ease}
.faq__a p{padding:0 44px 24px 0;font-size:14.5px;color:var(--muted);margin:0;line-height:1.85}

/* ---------- CTA / form ---------- */
.cta-band{
  background:linear-gradient(140deg,var(--ink) 0%,var(--ink-2) 100%);
  color:var(--paper);padding:92px 0;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-140px;top:-150px;width:460px;height:460px;
  border:1px solid rgba(200,160,99,.2);border-radius:50%;pointer-events:none;
}
.cta-band::after{
  content:"";position:absolute;right:-30px;top:-40px;width:270px;height:270px;
  border:1px solid rgba(200,160,99,.14);border-radius:50%;pointer-events:none;
}
.cta-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:64px;align-items:start;position:relative;z-index:1}
.cta-band h2{font-size:clamp(25px,3.1vw,36px);margin-bottom:18px;line-height:1.36}
.cta-band p{color:rgba(247,244,238,.72);font-size:15.2px;line-height:1.85}
.cta-list{margin:26px 0 0}
.cta-list li{font-size:14.2px;color:rgba(247,244,238,.8);padding-left:24px;position:relative;margin-bottom:11px;line-height:1.7}
.cta-list li::before{content:"✓";position:absolute;left:0;color:var(--brass);font-size:13px}

.form{background:var(--paper);color:var(--ink);padding:36px 34px;box-shadow:0 34px 74px -32px rgba(0,0,0,.6)}
.form__title{font-family:var(--serif);font-size:20px;margin-bottom:6px}
.form__sub{font-size:12.5px;color:var(--muted);margin-bottom:24px;line-height:1.65}
.field{margin-bottom:15px}
.field label{display:block;font-size:12.3px;color:var(--ink-2);font-weight:600;margin-bottom:7px;letter-spacing:.01em}
.field label i{color:#B4452F;font-style:normal}
.field input,.field select,.field textarea{
  width:100%;padding:12px 13px;border:1px solid var(--line);background:var(--white);
  font-family:var(--sans);font-size:14.2px;color:var(--ink);border-radius:1px;transition:.2s;
}
.field textarea{resize:vertical;min-height:76px}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(31,111,99,.1);
}
.field--row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form__note{font-size:11.5px;color:var(--muted);line-height:1.65;margin:14px 0 0}
.form .btn{width:100%;margin-top:4px}
.form__msg{display:none;font-size:13px;padding:13px 15px;margin-top:13px;border-radius:1px;line-height:1.7}
.form__msg.ok{display:block;background:rgba(31,111,99,.1);color:#17554C;border:1px solid rgba(31,111,99,.28)}
.form__msg.err{display:block;background:rgba(180,69,47,.07);color:#8C361F;border:1px solid rgba(180,69,47,.24)}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:60px;align-items:start}
.contact-item{display:flex;gap:17px;padding:22px 0;border-bottom:1px solid var(--line)}
.contact-item:first-of-type{border-top:1px solid var(--line)}
.contact-item__ico{width:40px;height:40px;flex-shrink:0;border:1px solid var(--line);display:grid;place-items:center;border-radius:1px}
.contact-item__ico svg{width:17px;height:17px;stroke:var(--brass-d);fill:none;stroke-width:1.6}
.contact-item h4{font-size:12px;color:var(--muted);font-family:var(--sans);font-weight:600;letter-spacing:.08em;margin-bottom:4px}
.contact-item a,.contact-item span{font-size:15.5px;color:var(--ink);font-family:var(--serif)}
.contact-item a:hover{color:var(--brass-d)}

.qr-box{background:var(--white);border:1px solid var(--line);padding:30px 26px;text-align:center;box-shadow:var(--shadow)}
.qr-box__ph{
  width:180px;height:180px;margin:0 auto 18px;border:1px dashed rgba(11,31,42,.22);display:grid;place-items:center;
  color:var(--muted);font-size:12px;background:var(--paper);line-height:1.7;padding:14px;
}
.qr-box h4{font-size:16px;margin-bottom:7px}
.qr-box p{font-size:12.3px;color:var(--muted);margin:0;line-height:1.7}

/* 二维码块：码 + 号码兼得 */
.qr-block{padding:0 0 6px}
.qr-block__img{
  width:200px;height:200px;margin:0 auto 16px;display:block;object-fit:contain;
  background:#fff;border:1px solid var(--line);padding:8px;
}
.qr-block__id{
  font-family:var(--serif);font-size:17px;font-weight:600;letter-spacing:.8px;
  color:var(--ink);user-select:all;-webkit-user-select:all;line-height:1.3;
}
.qr-block__tip{font-size:11.5px;color:var(--muted);margin-top:8px;line-height:1.6}

/* 未上传二维码时的微信号展示态 */
.wx-big{padding:6px 0 14px}
.wx-big__label{font-size:11px;letter-spacing:.16em;color:var(--muted);text-transform:uppercase;margin-bottom:10px}
.wx-big__id{
  font-family:var(--serif);font-size:26px;font-weight:600;letter-spacing:1.2px;
  color:var(--ink);user-select:all;-webkit-user-select:all;
  padding:14px 10px;margin-bottom:16px;background:var(--paper);
  border:1px solid var(--line);word-break:break-all;line-height:1.25;
}
.wx-big__btn{font-size:13.5px;padding:11px 22px}
.wx-big__hint{font-size:12px;color:var(--muted);margin-top:12px;line-height:1.7}

/* 行内复制小按钮 */
.copy-wx{
  font:inherit;font-size:11.5px;padding:3px 9px;margin-left:6px;
  background:transparent;border:1px solid rgba(11,31,42,.24);color:var(--muted);
  cursor:pointer;border-radius:2px;transition:.18s;vertical-align:middle;
}
.copy-wx:hover{border-color:var(--brass);color:var(--brass-d);background:rgba(184,150,90,.07)}
.copy-wx.is-done,.wx-big__btn.is-done{background:var(--brass);border-color:var(--brass);color:#fff}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(247,244,238,.62);padding:60px 0 30px;font-size:13.3px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:48px;padding-bottom:38px;border-bottom:1px solid rgba(247,244,238,.12)}
.site-footer .brand__mark{background:rgba(247,244,238,.07)}
.site-footer .brand__name{color:var(--paper)}
.footer-about{font-size:13px;line-height:1.8;color:rgba(247,244,238,.55);margin-top:16px;max-width:34ch}
.site-footer h5{color:var(--paper);font-size:12px;letter-spacing:.14em;font-family:var(--sans);font-weight:700;margin:0 0 16px}
.site-footer li{margin-bottom:10px}
.site-footer a:hover{color:var(--brass)}
.footer-bottom{padding-top:26px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:11.8px;color:rgba(247,244,238,.38)}
.footer-note{font-size:11.3px;color:rgba(247,244,238,.34);margin-top:16px;line-height:1.75;max-width:70ch}

/* ---------- subpage head ---------- */
.page-head{background:linear-gradient(180deg,var(--paper-2),var(--paper));padding:60px 0 56px;border-bottom:1px solid var(--line)}
.page-head h1{font-size:clamp(28px,3.6vw,43px);margin-bottom:16px}
.page-head .lead{margin-bottom:0}
.crumb{font-size:12px;color:var(--muted);letter-spacing:.07em;margin-bottom:20px}
.crumb a:hover{color:var(--brass-d)}

/* ---------- course blocks ---------- */
.course{background:var(--white);border:1px solid var(--line);margin-bottom:24px}
.course__head{display:grid;grid-template-columns:auto 1fr;gap:24px;padding:32px 34px;align-items:start}
.course__no{
  font-family:var(--serif);font-size:14px;color:var(--brass-d);border:1px solid var(--brass);
  width:46px;height:46px;display:grid;place-items:center;flex-shrink:0;
}
.course__head h3{font-size:21px;margin-bottom:7px}
.course__head p{font-size:14.2px;color:var(--muted);margin:0;line-height:1.75}
.course__body{display:grid;grid-template-columns:1.12fr .88fr;border-top:1px solid var(--line)}
.course__col{padding:28px 34px}
.course__col+.course__col{border-left:1px solid var(--line);background:var(--paper)}
.course__col h4{font-size:11.5px;letter-spacing:.13em;color:var(--brass-d);font-family:var(--sans);font-weight:700;margin-bottom:15px}
.course__col li{font-size:13.8px;color:var(--ink-2);padding-left:17px;position:relative;margin-bottom:10px;line-height:1.7}
.course__col li::before{content:"—";position:absolute;left:0;color:var(--brass-d)}
.course__meta{font-size:12.8px;color:var(--muted);padding:16px 34px;border-top:1px solid var(--line);display:flex;gap:28px;flex-wrap:wrap;align-items:center}
.course__meta b{color:var(--ink);font-weight:600}
.course__meta .price{font-family:var(--serif);font-size:17px;color:var(--ink)}

/* ---------- about page ---------- */
.about-grid{display:grid;grid-template-columns:320px 1fr;gap:60px;align-items:start}
.about-photo{position:sticky;top:104px}
.about-photo img{width:100%;aspect-ratio:1000/1140;object-fit:cover;object-position:50% 12%;border:1px solid var(--line)}
.about-photo figcaption{font-size:11.5px;color:var(--muted);margin-top:11px;line-height:1.7}
.stat-row{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin:30px 0}
.stat-row div{background:var(--paper);padding:20px 22px}
.stat-row b{font-family:var(--serif);font-size:21px;color:var(--brass-d);display:block;line-height:1.3}
.stat-row span{font-size:12px;color:var(--muted)}

.cap-table{width:100%;border-collapse:collapse;font-size:14px}
.cap-table th{
  text-align:left;font-size:11.5px;letter-spacing:.12em;color:var(--brass-d);font-weight:700;
  padding:0 0 14px;border-bottom:1px solid var(--line);font-family:var(--sans);
}
.cap-table td{padding:16px 0;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.7}
.cap-table td:first-child{width:150px;font-weight:600;font-family:var(--serif);font-size:15px}
.cap-table td:last-child{color:var(--muted);font-size:13.8px}

/* ---------- insights list ---------- */
.post-list{border-top:1px solid var(--line)}
.post{display:grid;grid-template-columns:120px 1fr auto;gap:32px;padding:28px 0;border-bottom:1px solid var(--line);align-items:baseline;transition:.2s}
.post:hover{background:rgba(255,255,255,.6)}
.post__date{font-size:12px;color:var(--muted);letter-spacing:.06em}
.post__title{font-family:var(--serif);font-size:18px;line-height:1.5}
.post__title small{display:block;font-family:var(--sans);font-size:13px;color:var(--muted);margin-top:6px;line-height:1.7;letter-spacing:0}
.post__cat{font-size:11.5px;color:var(--brass-d);border:1px solid rgba(162,128,60,.35);padding:4px 10px;white-space:nowrap;letter-spacing:.06em}

/* ---------- reveal ----------
   只做位移，绝不用 opacity 隐藏内容。
   JS 未生效 / 爬虫 / 截图 / 打印 场景下内容依然完整可见 */
.js-anim .reveal{transform:translateY(12px);transition:transform .62s cubic-bezier(.2,.7,.3,1)}
.js-anim .reveal.in{transform:none}

/* ---------- responsive ---------- */
@media(max-width:1000px){
  .hero__grid{gap:42px}
  .svc-grid{grid-template-columns:1fr}
  .method{grid-template-columns:repeat(2,1fr);gap:36px 28px}
  .about-grid,.about-strip{grid-template-columns:1fr;gap:36px}
  .about-photo{position:static;max-width:290px}
  .cta-grid,.contact-grid{grid-template-columns:1fr;gap:44px}
  .metrics__grid{grid-template-columns:repeat(2,1fr)}
  .metric{border-left:0;padding:32px 24px}
  .metric:first-child{padding-left:24px}
  .metric:nth-child(odd){border-right:1px solid rgba(247,244,238,.11)}
  .course__body{grid-template-columns:1fr}
  .course__col+.course__col{border-left:0;border-top:1px solid var(--line)}
  .post{grid-template-columns:1fr auto;gap:12px}
  .post__date{grid-column:1/-1}
}
@media(max-width:820px){
  .nav__links,.nav__cta .btn--ghost{display:none}
  .nav-toggle{display:block}
  .nav__links.open{
    display:flex;position:absolute;left:0;right:0;top:74px;background:var(--paper);
    flex-direction:column;align-items:flex-start;padding:24px;gap:18px;
    border-bottom:1px solid var(--line);box-shadow:var(--shadow);
  }
  .hero{padding:56px 0 64px}
  .hero__grid{grid-template-columns:1fr}
  .hero__photo{max-width:380px;margin-inline:auto;order:-1}
  .hero__stamp{right:-6px;bottom:22px;padding:12px 15px}
  .hero__photo::before{inset:11px -11px -11px 11px}
  .section{padding:68px 0}
  .section--sm{padding:52px 0}
  .pain__grid{grid-template-columns:1fr}
  .case{grid-template-columns:1fr;gap:16px;padding:28px 0}
  .proof{grid-template-columns:1fr;gap:22px;margin-top:40px;padding-top:34px}
  .footer-grid{grid-template-columns:1fr;gap:34px}
  .field--row{grid-template-columns:1fr}
  .method{grid-template-columns:1fr}
  .cta-band{padding:68px 0}
  .form{padding:28px 22px}
  .quote{padding:30px 26px}
  .cap-table td:first-child{width:110px;font-size:14px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto}
  .js-anim .reveal{transform:none}
}