/* ===== RESET & BASE ===== */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#FAFAF7;--bg-warm:#F2EFE8;--bg-warm2:#F8F5F0;--white:#FFFFFF;
  --brown:#8B6F47;--brown-hover:#7A5F3A;--brown-light:rgba(139,111,71,.08);
  --green:#7A8471;--green-light:rgba(122,132,113,.1);
  --terra:#B89484;--text-dark:#1F1B16;--text-body:#5C5648;
  --text-muted:#8B8A80;--border:#D6D2C8;--divider:#3A362E;
  --gold:#C8963E;--gold-light:rgba(200,150,62,.12);
  --font:'Inter','PingFang SC','Microsoft YaHei',sans-serif;
  --success:#16A34A;--error:#DC2626;
}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text-dark);line-height:1.6;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}

/* ===== FLASH MESSAGE ===== */
.flash{position:fixed;top:90px;left:50%;transform:translateX(-50%);z-index:9999;display:flex;align-items:center;gap:12px;padding:14px 24px;border-radius:8px;font-size:15px;font-weight:500;box-shadow:0 4px 20px rgba(0,0,0,.12);animation:slideDown .3s ease}
.flash-success{background:#ECFDF5;color:var(--success);border:1px solid #A7F3D0}
.flash-error{background:#FEF2F2;color:var(--error);border:1px solid #FECACA}
.flash button{background:none;border:none;font-size:20px;cursor:pointer;color:inherit;opacity:.6;line-height:1}
.flash button:hover{opacity:1}
@keyframes slideDown{from{opacity:0;transform:translateX(-50%) translateY(-16px)}to{opacity:1;transform:translateX(-50%) translateY(0)}}

/* ===== HEADER ===== */
.header{position:fixed;top:0;left:0;right:0;z-index:1000;display:flex;align-items:center;justify-content:space-between;padding:0 80px;height:72px;background:rgba(250,250,247,.94);backdrop-filter:blur(16px);box-shadow:0 1px 4px rgba(0,0,0,.04)}
.logo-group{display:flex;align-items:center;gap:12px}
.logo-icon{width:36px;height:36px;flex-shrink:0}
.logo-name{font-size:22px;font-weight:600;color:var(--text-dark);letter-spacing:1px}
.logo-sub{font-size:11px;color:var(--text-muted);font-weight:400;letter-spacing:0;margin-left:2px}
.nav-links{display:flex;gap:32px}
.nav-link{font-size:14px;font-weight:500;color:var(--text-body);transition:color .2s;cursor:pointer}
.nav-link:hover,.nav-link.active{color:var(--brown)}
.header-cta{display:inline-flex;align-items:center;padding:10px 24px;border-radius:8px;background:var(--brown);color:#FFF;font-size:14px;font-weight:600;transition:all .2s;cursor:pointer;border:none}
.header-cta:hover{background:var(--brown-hover);transform:translateY(-1px)}

/* ===== HERO ===== */
.hero{display:flex;align-items:center;gap:80px;padding:160px 80px 100px;background:linear-gradient(135deg, #F2EFE8 0%, #F8F5F0 40%, #FAFAF7 100%);min-height:660px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-200px;right:-100px;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle, rgba(139,111,71,.04) 0%, transparent 70%);pointer-events:none}
.hero-left{flex:1;display:flex;flex-direction:column;gap:24px;position:relative;z-index:1}
.hero-org{font-size:13px;color:var(--green);font-weight:500;letter-spacing:1px}
.hero-title{font-size:52px;font-weight:700;color:var(--text-dark);line-height:1.18;letter-spacing:-0.5px}
.hero-title em{font-style:normal;color:var(--brown)}
.hero-sub{font-size:17px;color:var(--text-body);line-height:1.7;max-width:580px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap;margin-top:4px}
.hero-right{width:520px;height:440px;border-radius:16px;overflow:hidden;flex-shrink:0;box-shadow:0 12px 40px rgba(0,0,0,.1);position:relative;z-index:1}
.hero-right img{width:100%;height:100%;object-fit:cover}

/* ===== BUTTONS ===== */
.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:15px 32px;border-radius:8px;background:var(--brown);color:#FFF;font-size:15px;font-weight:600;transition:all .2s;cursor:pointer;border:none}
.btn-primary:hover{background:var(--brown-hover);transform:translateY(-2px);box-shadow:0 6px 20px rgba(139,111,71,.3)}
.btn-secondary{display:inline-flex;align-items:center;padding:15px 32px;border-radius:8px;background:#FFF;color:var(--brown);font-size:15px;font-weight:600;border:1px solid var(--border);transition:all .2s;cursor:pointer}
.btn-secondary:hover{border-color:var(--brown);transform:translateY(-2px)}

/* ===== SECTION COMMON ===== */
.section{padding:100px 80px}
.section-header{text-align:center;max-width:700px;margin:0 auto 64px}
.section-label{font-size:13px;font-weight:600;color:var(--green);letter-spacing:2px;text-transform:uppercase;margin-bottom:12px}
.section-title{font-size:36px;font-weight:700;color:var(--text-dark);line-height:1.3;margin-bottom:16px}
.section-desc{font-size:16px;color:var(--text-body);line-height:1.7}

/* ===== STATS GRID ===== */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;max-width:1100px;margin:0 auto}
.stat-card{text-align:center;padding:40px 24px;background:var(--white);border-radius:16px;box-shadow:0 2px 12px rgba(0,0,0,.04);transition:transform .2s}
.stat-card:hover{transform:translateY(-4px)}
.stat-num{font-size:42px;font-weight:700;color:var(--brown);line-height:1}
.stat-unit{font-size:20px;font-weight:600;color:var(--brown)}
.stat-label{font-size:14px;color:var(--text-body);margin-top:8px}

/* ===== MISSION CARDS ===== */
.mission-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;max-width:1100px;margin:0 auto}
.mission-card{padding:40px 32px;border-radius:16px;background:var(--white);box-shadow:0 4px 20px rgba(0,0,0,.05);transition:transform .2s,box-shadow .2s;border-top:3px solid transparent}
.mission-card:hover{transform:translateY(-6px);box-shadow:0 12px 36px rgba(0,0,0,.1)}
.mission-card:nth-child(1){border-top-color:var(--brown)}
.mission-card:nth-child(2){border-top-color:var(--green)}
.mission-card:nth-child(3){border-top-color:var(--terra)}
.mission-icon{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.mission-icon.farm{background:var(--brown-light)}
.mission-icon.disabled{background:var(--green-light)}
.mission-icon.poor{background:rgba(184,148,132,.12)}
.mission-icon svg{width:28px;height:28px}
.mission-title{font-size:22px;font-weight:600;color:var(--text-dark);margin-bottom:12px}
.mission-body{font-size:14px;color:var(--text-body);line-height:1.75;margin-bottom:16px}
.mission-highlight{font-size:13px;color:var(--brown);font-weight:600;padding:8px 14px;background:var(--brown-light);border-radius:8px;display:inline-block}

/* ===== PRINCIPLE CARDS ===== */
.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;max-width:1100px;margin:0 auto}
.principle-card{text-align:center;padding:44px 32px;background:var(--white);border-radius:16px;box-shadow:0 4px 20px rgba(0,0,0,.05);transition:transform .2s;position:relative;overflow:hidden}
.principle-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--brown),var(--gold));opacity:0;transition:opacity .3s}
.principle-card:hover{transform:translateY(-6px)}
.principle-card:hover::before{opacity:1}
.principle-num{width:48px;height:48px;border-radius:50%;background:var(--bg-warm);display:inline-flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;color:var(--brown);margin-bottom:16px}
.principle-title{font-size:20px;font-weight:600;color:var(--text-dark);margin-bottom:10px}
.principle-body{font-size:14px;color:var(--text-body);line-height:1.7}

/* ===== MATRIX GRID ===== */
.matrix-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:1100px;margin:0 auto}
.matrix-card{padding:28px;background:var(--white);border-radius:12px;box-shadow:0 2px 10px rgba(0,0,0,.04);transition:all .2s}
.matrix-card:hover{transform:translateY(-3px);box-shadow:0 6px 24px rgba(0,0,0,.08)}
.matrix-num{font-size:11px;font-weight:700;color:var(--brown);margin-bottom:6px}
.matrix-title{font-size:16px;font-weight:600;color:var(--text-dark);margin-bottom:8px}
.matrix-desc{font-size:13px;color:var(--text-body);line-height:1.6}

/* ===== FLYWHEEL ===== */
.flywheel{display:flex;gap:40px;max-width:1100px;margin:0 auto;align-items:stretch}
.flywheel-col{flex:1;padding:40px 32px;border-radius:16px;position:relative}
.flywheel-col.out{background:linear-gradient(135deg, var(--bg-warm), #EDE8DE);border:1px solid var(--border)}
.flywheel-col.in{background:linear-gradient(135deg, var(--bg-warm2), #F0EDE6);border:1px solid var(--border)}
.flywheel-tag{display:inline-block;padding:4px 14px;border-radius:20px;font-size:12px;font-weight:600;margin-bottom:12px}
.flywheel-tag.out{background:var(--brown);color:#FFF}
.flywheel-tag.in{background:var(--green);color:#FFF}
.flywheel-title{font-size:18px;font-weight:600;color:var(--text-dark);margin-bottom:6px}
.flywheel-target{font-size:13px;color:var(--brown);font-weight:600;margin-bottom:16px}
.flywheel-list{list-style:none;display:flex;flex-direction:column;gap:10px}
.flywheel-list li{font-size:13px;color:var(--text-body);padding-left:18px;position:relative;line-height:1.5}
.flywheel-list li::before{content:'';position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:50%;background:var(--brown);opacity:.5}
.flywheel-arrow{display:flex;align-items:center;font-size:28px;color:var(--brown);flex-shrink:0}

/* ===== TIMELINE ===== */
.timeline{display:flex;gap:20px;max-width:1100px;margin:0 auto;position:relative}
.timeline::before{content:'';position:absolute;top:40px;left:60px;right:60px;height:2px;background:var(--border);z-index:0}
.timeline-item{flex:1;text-align:center;position:relative;z-index:1}
.timeline-dot{width:16px;height:16px;border-radius:50%;background:var(--brown);margin:0 auto 16px;position:relative;z-index:2}
.timeline-dot::after{content:'';position:absolute;inset:-8px;border-radius:50%;background:var(--brown-light)}
.timeline-year{font-size:15px;font-weight:700;color:var(--brown);margin-bottom:4px}
.timeline-phase{font-size:13px;color:var(--green);font-weight:600;margin-bottom:8px}
.timeline-desc{font-size:13px;color:var(--text-body);line-height:1.6}
.timeline-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;max-width:1100px;margin:40px auto 0}
.metric-item{text-align:center;padding:28px 16px;background:var(--bg-warm);border-radius:12px}
.metric-num{font-size:28px;font-weight:700;color:var(--brown)}
.metric-label{font-size:13px;color:var(--text-body);margin-top:4px}

/* ===== VALUE CARDS ===== */
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;max-width:1100px;margin:0 auto}
.value-card{padding:36px 28px;background:var(--white);border-radius:16px;box-shadow:0 4px 20px rgba(0,0,0,.05)}
.value-card h3{font-size:18px;font-weight:600;color:var(--text-dark);margin-bottom:16px;padding-bottom:12px;border-bottom:2px solid var(--brown-light)}
.value-card ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.value-card li{font-size:14px;color:var(--text-body);line-height:1.5;padding-left:16px;position:relative}
.value-card li::before{content:'\2713';position:absolute;left:0;color:var(--green);font-weight:700;font-size:12px}

/* ===== HELP CARDS ===== */
.help-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:1100px;margin:0 auto}
.help-card{text-align:center;padding:44px 28px;background:var(--white);border-radius:16px;box-shadow:0 4px 20px rgba(0,0,0,.05);transition:all .3s}
.help-card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(0,0,0,.1)}
.help-icon{width:56px;height:56px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;margin-bottom:20px}
.help-icon.purchase{background:var(--brown-light)}
.help-icon.volunteer{background:var(--green-light)}
.help-icon.enterprise{background:var(--gold-light)}
.help-icon svg{width:26px;height:26px}
.help-title{font-size:18px;font-weight:600;color:var(--text-dark);margin-bottom:10px}
.help-body{font-size:14px;color:var(--text-body);line-height:1.7;margin-bottom:18px}
.help-link{font-size:14px;font-weight:600;color:var(--brown);cursor:pointer;transition:color .2s}
.help-link:hover{color:var(--brown-hover)}

/* ===== CASE STUDY ===== */
.case-study{max-width:900px;margin:80px auto 0;padding:32px 40px;background:linear-gradient(135deg, var(--brown-light), var(--gold-light));border-radius:16px;border-left:4px solid var(--brown)}
.case-label{font-size:12px;font-weight:700;color:var(--brown);letter-spacing:2px;margin-bottom:8px}
.case-title{font-size:18px;font-weight:600;color:var(--text-dark);margin-bottom:8px}
.case-desc{font-size:14px;color:var(--text-body);line-height:1.65}

/* ===== PARTNERS ===== */
.partners-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:24px;max-width:1100px;margin:0 auto}
.partner-item{width:150px;height:64px;border-radius:10px;background:var(--bg-warm);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:500;color:var(--text-body);transition:all .2s}
.partner-item:hover{background:#E8E4DD;color:var(--text-dark);transform:translateY(-2px)}

/* ===== FOOTER ===== */
.footer{padding:80px 80px 32px;background:var(--text-dark);color:var(--text-muted)}
.footer-top{display:flex;gap:48px;justify-content:space-between;margin-bottom:56px}
.footer-brand{display:flex;flex-direction:column;gap:16px;width:320px}
.footer-logo-group{display:flex;align-items:center;gap:10px}
.footer-logo-name{font-size:18px;font-weight:600;color:var(--bg)}
.footer-org{font-size:12px;color:rgba(255,255,255,.4);line-height:1.6}
.footer-col{display:flex;flex-direction:column;gap:14px;flex:1}
.footer-col-title{font-size:13px;font-weight:600;color:var(--bg)}
.footer-col a{font-size:13px;color:var(--text-muted);transition:color .2s;cursor:pointer}
.footer-col a:hover{color:var(--bg)}
.footer-divider{width:100%;height:1px;background:var(--divider);margin-bottom:20px}
.footer-bottom{display:flex;justify-content:space-between;align-items:center}
.footer-copy{font-size:12px;color:rgba(255,255,255,.35)}
.footer-legal{display:flex;gap:20px}
.footer-legal a{font-size:12px;color:rgba(255,255,255,.35);transition:color .2s;cursor:pointer}
.footer-legal a:hover{color:var(--bg)}

/* ===== MODAL ===== */
.modal-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);z-index:9999;align-items:center;justify-content:center;padding:20px}
.modal-overlay.active{display:flex}
.modal{background:#FFF;border-radius:16px;padding:40px;max-width:480px;width:100%;max-height:90vh;overflow-y:auto;position:relative;box-shadow:0 20px 60px rgba(0,0,0,.2);animation:modalIn .3s ease}
.modal h2{font-size:24px;font-weight:700;color:var(--text-dark);margin-bottom:24px}
.modal-close{position:absolute;top:16px;right:16px;background:none;border:none;font-size:28px;cursor:pointer;color:var(--text-muted);line-height:1;padding:4px 8px;border-radius:4px}
.modal-close:hover{background:var(--bg-warm);color:var(--text-dark)}
.modal-form{display:flex;flex-direction:column;gap:18px}
.modal-form .form-group input,
.modal-form .form-group textarea{background:var(--bg)}
@keyframes modalIn{from{opacity:0;transform:translateY(-20px) scale(.96)}to{opacity:1;transform:translateY(0) scale(1)}}

/* ===== FORM ELEMENTS ===== */
.form-group{display:flex;flex-direction:column;gap:6px}
.form-group label{font-size:14px;font-weight:600;color:var(--text-body)}
.form-group .required{color:var(--error)}
.form-group input,
.form-group textarea,
.form-group select{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:8px;font-size:15px;font-family:inherit;color:var(--text-dark);background:var(--bg);transition:border-color .2s;outline:none}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus{border-color:var(--brown);background:#FFF}
.form-group textarea{resize:vertical;min-height:80px}

/* ===== RESPONSIVE ===== */
@media(max-width:1024px){
  .header{padding:0 32px}
  .nav-links{display:none}
  .hero{padding:130px 32px 70px;flex-direction:column;gap:40px}
  .hero-right{width:100%;height:300px}
  .hero-title{font-size:34px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .mission-grid,.principles,.matrix-grid,.value-grid,.help-grid{grid-template-columns:1fr;max-width:500px}
  .flywheel{flex-direction:column}
  .flywheel-arrow{transform:rotate(90deg);justify-content:center}
  .timeline{flex-direction:column;gap:24px}
  .timeline::before{display:none}
  .timeline-metrics{grid-template-columns:repeat(2,1fr)}
  .section{padding:70px 32px}
  .section-title{font-size:28px}
  .footer{padding:50px 32px 24px}
  .footer-top{flex-direction:column;gap:32px}
}
@media(max-width:640px){
  .header{padding:0 20px;height:60px}
  .logo-name{font-size:18px}
  .hero{padding:100px 20px 40px}
  .hero-title{font-size:26px}
  .hero-sub{font-size:15px}
  .btn-primary,.btn-secondary{padding:13px 24px;font-size:14px}
  .section{padding:50px 20px}
  .section-title{font-size:24px}
  .stats-grid{grid-template-columns:1fr 1fr;gap:16px}
  .stat-num{font-size:32px}
  .stat-card{padding:28px 16px}
  .timeline-metrics{grid-template-columns:1fr 1fr}
  .help-grid{grid-template-columns:1fr}
  .partners-grid{gap:16px}
  .partner-item{width:120px;height:50px;font-size:12px}
  .case-study{padding:24px}
  .footer{padding:40px 20px 20px}
}