@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Noto+Sans+SC:wght@400;500;600;700;800&display=swap');
:root{--ink:#242d28;--muted:#747d77;--green:#2c6d56;--deep:#164b3b;--lime:#d9eb98;--cream:#f8f9f3;--line:#e7eae1;--white:#fff;--shadow:0 18px 54px rgba(33,68,48,.08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--cream);color:var(--ink);font-family:'DM Sans','Noto Sans SC',sans-serif}button,input,select,textarea{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}.site-shell{max-width:1500px;margin:auto}.site-header{height:92px;display:flex;align-items:center;gap:54px;padding:0 6.2%;border-bottom:1px solid var(--line);background:rgba(248,249,243,.95)}.brand{display:flex;align-items:center;gap:11px;white-space:nowrap}.brand-mark{width:43px;height:43px;display:grid;place-items:center;border-radius:13px;background:var(--deep);color:#fff;font-size:20px;font-weight:800;position:relative}.brand-mark span{position:absolute;right:-5px;top:-7px;color:#c8e585;font-size:18px}.brand-copy{display:flex;flex-direction:column;line-height:1.2}.brand-copy strong{font-size:19px;letter-spacing:1px}.brand-copy small{font-size:9px;color:#8e9990;letter-spacing:1.1px;margin-top:5px}.top-nav{display:flex;gap:36px;margin-left:32px;height:100%;align-items:center}.top-nav a{font-size:14px;color:#7c857e;height:100%;display:grid;align-items:center;position:relative}.top-nav .nav-active{color:var(--deep);font-weight:700}.top-nav .nav-active:after{content:'';position:absolute;bottom:0;left:0;right:0;height:3px;background:var(--green);border-radius:3px}.header-actions{display:flex;align-items:center;gap:13px;margin-left:auto}.identity-button{border:1px solid #dde5db;background:#fff;border-radius:9px;padding:10px 14px;display:flex;align-items:center;gap:9px;color:#435449;font-size:13px;max-width:190px}.identity-button #identityLabel{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.identity-dot{width:7px;height:7px;border-radius:50%;background:#80a672}.chevron{font-size:17px;color:#9cab9d;margin-left:5px}.primary-button{border:0;border-radius:9px;padding:11px 18px;background:var(--deep);color:white;font-weight:600;display:inline-flex;align-items:center;justify-content:center;gap:16px;transition:transform .2s,background .2s}.primary-button:hover{background:#236d51;transform:translateY(-2px)}.header-publish{font-size:13px}.header-publish>span{font-size:19px;line-height:10px;font-weight:400}.hero{min-height:482px;display:grid;grid-template-columns:1fr 1fr;padding:66px 6.2% 54px;position:relative;overflow:hidden}.hero-copy{position:relative;z-index:1}.eyebrow{display:flex;align-items:center;gap:12px;color:var(--green);font-size:12px;font-weight:700;letter-spacing:2.4px}.eyebrow-line{height:1px;width:29px;background:#7daa85}.hero h1{font-size:clamp(40px,4vw,66px);letter-spacing:-3px;line-height:1.3;margin:30px 0 18px;font-weight:800}.hero h1 em{font-style:normal;color:var(--green)}.hero-copy>p{max-width:495px;color:#728077;font-size:15px;line-height:2.1;margin:0}.hero-actions{display:flex;align-items:center;gap:32px;margin-top:32px}.hero-cta{padding:15px 24px;font-size:14px;gap:30px}.text-link{font-size:13px;color:#486a53;font-weight:700}.text-link span{margin-left:8px}.hero-art{position:relative;min-height:360px}.orbit{position:absolute;border:1px solid #dce6d6;border-radius:50%;left:18%;top:-35%;width:540px;height:540px}.orbit-two{left:30%;top:-16%;width:340px;height:340px}.art-sun{position:absolute;left:38%;top:17%;width:240px;height:240px;border-radius:50%;display:grid;place-items:center;background:#dce9ad;color:#39725a;font-size:176px;line-height:1;box-shadow:inset -18px -10px 0 rgba(77,130,80,.06);transform:rotate(-14deg)}.art-card{position:absolute;background:#fff;box-shadow:var(--shadow);z-index:2;border:1px solid #eff0e7}.art-card-top{left:13%;top:18%;border-radius:15px;padding:18px 24px;display:flex;align-items:center;gap:15px;font-size:13px;font-weight:700;line-height:1.7;transform:rotate(-8deg)}.art-icon{color:#ebad62;font-size:31px}.art-card-bottom{left:51%;top:72%;border-radius:14px;padding:16px 18px;display:flex;align-items:center;gap:12px;font-size:12px;color:#63806a;transform:rotate(7deg)}.mini-avatars{display:flex;padding-left:6px}.mini-avatars span{width:29px;height:29px;border-radius:50%;background:#c7dcad;border:2px solid white;margin-left:-7px;display:grid;place-items:center;color:#426e54;font-size:11px}.mini-avatars span:nth-child(2){background:#e8d6bf}.mini-avatars span:nth-child(3){background:#d5e2d6}.art-star{position:absolute;color:#77a079}.star-one{left:23%;top:72%;font-size:36px}.star-two{left:80%;top:8%;font-size:28px;color:#e7b77f}.community-strip{margin:0 6.2%;background:#eaf0df;min-height:76px;border-radius:10px;display:grid;grid-template-columns:repeat(3,1fr);align-items:center}.community-strip span{font-size:13px;color:#526e56;text-align:center;border-right:1px solid #ceddc5}.community-strip span:last-child{border:0}.community-strip b{color:#7ca37b;font-size:12px;margin-right:12px}.content-layout{padding:88px 6.2% 100px;display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:39px}.section-heading{display:flex;align-items:end;justify-content:space-between;margin-bottom:28px}.section-kicker,.modal-kicker{font-size:10px;color:#88a389;letter-spacing:2.8px;font-weight:700}.section-heading h2{font-size:30px;letter-spacing:-1px;margin:9px 0 0}.title-dot{color:#7da66c}.section-heading p{font-size:12px;color:#9ba39b;margin:0 0 5px}.board-toolbar{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:12px}.category-tabs{display:flex;gap:22px;overflow:auto;white-space:nowrap}.category-tabs button{background:none;border:0;border-bottom:2px solid transparent;color:#919991;padding:0 0 15px;font-size:13px}.category-tabs button.active{border-bottom-color:var(--green);color:var(--deep);font-weight:700}.board-tools{display:flex;gap:8px;align-items:center;padding-bottom:10px}.search-box{display:flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:7px;background:#fff;padding:6px 9px;color:#95a098}.search-box span{font-size:20px;line-height:17px}.search-box input{width:110px;border:0;outline:0;font-size:12px;background:transparent}.board-tools select{border:1px solid var(--line);background:#fff;border-radius:7px;padding:8px;color:#66756b;font-size:12px;outline:0}.post-list{display:grid;gap:14px;margin-top:20px}.post-card{background:#fff;border:1px solid #e9ece5;border-radius:12px;padding:23px 27px;transition:box-shadow .2s,transform .2s;cursor:pointer}.post-card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}.post-top,.post-meta,.post-actions{display:flex;align-items:center}.post-top{justify-content:space-between}.post-meta{gap:10px;font-size:12px;color:#8a958b}.avatar{width:30px;height:30px;border-radius:9px;background:#e8eee3;color:#4f7b5f;display:inline-grid;place-items:center;font-size:13px;font-weight:700;flex:none}.post-school{font-weight:700;color:#56705d}.post-dot{color:#c7cec4}.tag{border-radius:5px;padding:5px 9px;font-size:11px;font-weight:700;background:#e5f0e9;color:#4b8868}.tag.想法交流{background:#f7eedf;color:#a57b46}.tag.论文写作{background:#eee9f5;color:#7b6b9b}.tag.实验方法{background:#e7edf4;color:#6886a3}.tag.学术生活{background:#f6eaea;color:#ad7776}.post-card h3{font-size:17px;margin:17px 0 8px;line-height:1.55}.post-excerpt{color:#7b887d;font-size:13px;line-height:1.75;margin:0;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.post-actions{gap:22px;margin-top:22px;color:#98a399;font-size:12px}.post-actions button{border:0;background:none;color:inherit;padding:0;display:flex;align-items:center;gap:6px}.post-actions button:hover{color:var(--green)}.post-actions .read-more{margin-left:auto;color:#4d7c5d;font-weight:700}.post-actions .icon{font-size:17px}.sidebar{padding-top:40px}.sidebar-card{border-radius:12px;padding:25px;margin-bottom:16px}.welcome-card{background:#e7efdb;position:relative;overflow:hidden}.welcome-card:after{content:'✳';position:absolute;right:-15px;top:-35px;font-size:130px;color:rgba(120,164,114,.12)}.sidebar-icon{font-size:31px;color:#6b9b68}.sidebar-card h3{font-size:17px;margin:16px 0 11px}.welcome-card p{font-size:12px;color:#6b806e;line-height:1.9;margin:0 0 19px}.sidebar-button{border:0;background:#fff;border-radius:7px;padding:11px 14px;color:#3c7154;font-size:12px;font-weight:700;display:flex;justify-content:space-between;width:100%}.guide-card{background:#fff;border:1px solid var(--line)}.guide-card h3{margin:0 0 18px}.guide-item{display:flex;gap:12px;align-items:start;border-top:1px solid #eff1ea;padding:11px 0}.guide-item span{font-size:11px;color:#82aa83;font-weight:700;padding-top:2px}.guide-item p{font-size:12px;color:#78887a;line-height:1.7;margin:0}.sidebar-note{font-size:11px;color:#9ba69b;line-height:1.9;padding:18px 9px}.sidebar-note strong{font-size:10px;letter-spacing:1px;color:#75927b}.site-footer{margin:0 6.2%;border-top:1px solid var(--line);padding:25px 0 35px;display:flex;justify-content:space-between;color:#9da79d;font-size:11px}.loading-state,.empty-state{padding:65px 20px;text-align:center;color:#8a9a8a;background:#fff;border:1px solid var(--line);border-radius:12px;font-size:13px}.empty-state span{display:block;font-size:42px;color:#8cb487;margin-bottom:12px}.empty-state strong{display:block;color:#445d49;font-size:17px;margin-bottom:8px}.empty-state button{margin-top:17px}.modal{border:0;border-radius:17px;padding:0;box-shadow:0 28px 90px rgba(13,49,31,.22);width:min(92vw,520px);max-height:90vh;overflow:auto;background:#fff}.modal::backdrop{background:rgba(23,43,31,.48);backdrop-filter:blur(3px)}.modal form,.detail-shell{padding:34px 38px;position:relative}.modal-close{position:absolute;right:24px;top:19px;background:none;border:0;font-size:27px;color:#a2aba2;line-height:1}.modal h2{font-size:29px;margin:10px 0}.modal p{font-size:13px;color:#78867a;line-height:1.8;margin:0 0 24px}.modal label{display:block;font-size:12px;font-weight:700;color:#526557;margin:19px 0 8px}.modal input,.modal textarea,.modal select{width:100%;border:1px solid #dce5db;border-radius:8px;padding:12px 13px;outline:0;background:#fbfcf9;color:var(--ink);font-size:13px}.modal textarea{resize:vertical;line-height:1.7}.modal input:focus,.modal textarea:focus,.modal select:focus{border-color:#77a887;box-shadow:0 0 0 3px rgba(119,168,135,.15)}.modal small{display:block;font-size:11px;color:#9aa59a;line-height:1.6;margin:9px 0 24px}.modal-submit{width:100%;padding:14px}.compose-modal{width:min(92vw,640px)}.form-footer{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-top:20px}.form-footer span{color:#95a298;font-size:11px}.detail-modal{width:min(92vw,700px)}.detail-shell{padding:35px 41px}.detail-heading{padding-right:26px}.detail-heading h2{font-size:25px;line-height:1.5;margin:15px 0}.detail-meta{display:flex;align-items:center;gap:9px;font-size:12px;color:#829184}.detail-body{color:#516256;font-size:14px;line-height:1.95;white-space:pre-wrap;overflow-wrap:anywhere;margin:22px 0!important}.detail-like{border:1px solid #dce8dd;background:#f8fbf7;border-radius:7px;color:#4f805d;padding:9px 12px;font-size:12px}.comment-section{border-top:1px solid var(--line);margin-top:28px;padding-top:10px}.comment-section h3{font-size:17px}.comment-section h3 span{font-size:12px;color:#89a08b}.comment-item{padding:15px 0;border-bottom:1px solid var(--line)}.comment-item p{font-size:13px;color:#526454;line-height:1.8;margin:8px 0 0;white-space:pre-wrap;overflow-wrap:anywhere}.comment-empty{color:#9ca69c;font-size:12px;padding:16px 0}.comment-section form{padding:0}.toast{position:fixed;bottom:25px;left:50%;transform:translate(-50%,20px);background:#1d543e;color:#fff;padding:12px 18px;border-radius:9px;box-shadow:var(--shadow);font-size:13px;opacity:0;pointer-events:none;transition:.25s;z-index:20}.toast.show{opacity:1;transform:translate(-50%,0)}@media(max-width:1100px){.site-header{gap:28px}.top-nav{margin-left:0}.hero-art{transform:scale(.85);transform-origin:center}.content-layout{grid-template-columns:minmax(0,1fr) 240px;gap:20px}.board-toolbar{align-items:stretch;flex-direction:column}.board-tools{justify-content:flex-end}.category-tabs{gap:18px}}@media(max-width:760px){.site-header{height:72px;padding:0 5%;gap:12px}.brand-mark{width:37px;height:37px}.brand-copy strong{font-size:16px}.brand-copy small{display:none}.top-nav{display:none}.header-actions{gap:6px}.identity-button{padding:9px;max-width:115px;font-size:11px}.header-publish{padding:10px;font-size:0;gap:0}.header-publish>span{font-size:20px}.hero{padding:52px 5% 36px;display:block;min-height:0}.hero h1{font-size:44px;letter-spacing:-2px}.hero-copy>p{font-size:13px}.hero-art{height:240px;min-height:0;margin-top:12px;transform:scale(.62);transform-origin:top center}.orbit{top:-65%;left:6%}.orbit-two{top:-35%}.art-sun{top:0;left:31%}.art-card-top{top:3%;left:6%}.art-card-bottom{top:65%;left:49%}.community-strip{margin:0 5%;grid-template-columns:1fr;gap:0;padding:13px 18px}.community-strip span{border-right:0;text-align:left;padding:6px 0}.content-layout{padding:58px 5%;display:block}.section-heading{display:block}.section-heading h2{font-size:26px}.section-heading p{margin-top:9px}.sidebar{padding-top:35px;display:grid;grid-template-columns:1fr 1fr;gap:12px}.sidebar-card{margin:0}.sidebar-note{display:none}.site-footer{margin:0 5%}.post-card{padding:19px}.category-tabs{gap:19px}.board-tools{justify-content:space-between}.search-box{flex:1}.search-box input{width:100%}}@media(max-width:520px){.hero-actions{gap:18px}.text-link{font-size:11px}.sidebar{display:block}.sidebar-card{margin-bottom:12px}.modal form,.detail-shell{padding:30px 22px}.form-footer{align-items:stretch;flex-direction:column}.form-footer .primary-button{width:100%}.post-meta{gap:6px;font-size:10px}.post-card h3{font-size:16px}.post-actions{gap:15px}.site-footer span:last-child{display:none}}